Cement side and heel lasting machine

Abstract

A machine, operable on a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom, that applies cement in the corners between the side and heel portions of the upper margin and the peripheries of the corresponding portions of the insole prior to wiping the side and heel portions of the upper margin against the insole and attaching the wiped margin portions to the insole by means of the cement. The machine includes an arrangement for automatically lowering cement applying nozzles against the desired portion of the insole regardless of the length of the shoe assembly, an arrangement for automatically positioning heel and side wiping instrumentalities so as to enable these instrumentalities to simultaneously operate on the side and heel portions of the shoe assembly regardless of the length of the shoe assembly, and a mechanism for applying substantially uniform quantities of cement from the nozzles onto surfaces of the shoe assembly during the entire movements of the nozzles along these surfaces.

Description

BACKGROUND AND SUMMARY OF THE INVENTION

This invention is an improvement on cement lasting machines of the type shown in U.S. Pat. No. 3,963,840.

Dealing with a first aspect of the invention, the prior art machine is operable on a shoe assembly formed of a last having an insole located on its bottom and an upper mounted thereon with the toe portion of the upper margin being wiped against and secured to the insole and unwiped portions of the upper margin extending heelwardly of the wiped toe portion of the upper margin. The machine applies cement in the corners between the unwiped margin portions and the corresponding portions of the insole periphery. The machine includes a shoe assembly support for supporting the shoe assembly bottom-up with the toe end of the shoe assembly facing forwardly. A pair of nozzles, located above the shoe assembly, are mounted for forward-rearward movement, for heightwise movement, and for inward-outward movement. In order to apply cement into the corners heelwardly from the boundaries between the wiped and unwiped margin portions, the nozzles are caused to move forwardly while they are in upper and inner positions until an engaging member, that is mounted for forward-rearward movement with the nozzles, intersects a stop member. The stop member is so located as to stop the forward movement of the nozzles when the nozzles are over the widest part of the shoe assembly bottom heelwardly of said boundaries. After the stop member stops forward movement of the nozzles, the nozzles are lowered and moved outwardly into the corners heelwardly of said boundaries. The stop member is then moved out of intersecting relationship with the engaging member so that the nozzles can again resume their forward movement so as to bring the nozzles to said boundaries. When the nozzles have arrived at said boundaries, they are caused to move rearwardly while being maintained in said corners and cement is extruded from the nozzles into the corners during this rearward movement. In order to properly stop the first mentioned forward movement of the nozzles in the appropriate position for the particular length of shoe being operated on, the forward-heelward location of the stop member is manually adjusted.

A first object of the first aspect of the invention is to do away with the manual adjustment of the forward-rearward location of the stop member when changing the length of the shoe assembly being operated on by the machine. To accomplish this, the machine, in accordance with the first aspect of the invention, includes a detector member mounted for forward-rearward movement that is so connected to the stop member as to cause the stop member to have forward-rearward movement in unison with the detector member. The detector member is initially located in a forward position that is toeward of the toe end extremity of the shoe assembly and is yieldably moved rearwardly, together with the stop member, prior to the first mentioned forward movement of the nozzles to bring the detector member into engagement with the toe and extremity of the shoe assembly and thereby bring the stop member to the desired location for the particular length of shoe assembly being operated on. operator, for heightwise movement, and for inward-outward movement. The cement pumping mechanism 132 acts as means operable to extrude cement from the nozzles 176 into said corners. A detector member, constituted by the finger 56, is mounted for forward-rearward movement. The piston rod 284 constitutes a stop member that is located in a particular location. The rods 262, 264 movably mounting the stop member 284 and the links 322, 324 connecting the stop member 284 to the detector member 56 constitute means so mounting the stop member 284 and so connecting the stop member to the detector member as to cause the stop member to have forward-rearward movement in unison with the detector member. The cam 320 constitutes an engaging member, mounted for forward-rearward movement in unison with the nozzles 176, that is located rearwardly of the stop member 284 in intersecting relationship with the stop member. The motors motor 126, 190, and 182 respectively act acts as means for initially retaining the nozzles 176 in rearward, upper, and inner positions. The motor 32 acts as means for initially locating the detector member 56 in a forward position that is forward of the toe end extremity of the shoe assembly 336 and also acts as means for thereafter yieldably moving the detector member 56, together with the stop member 284, rearwardly to bring the detector member into engagement with the toe end extremity of the shoe assembly. The motor 126 constitutes means for thereafter moving the nozzles 176, together with the engaging member 320, forwardly until the engaging member 320 engages the stop member 284. The motors 190 and 182 respectively constitute means for thereafter effecting lowering and outward movements of maintaining the nozzles 176 to move the nozzles into in said corners heelwardly of during at least the latter part of the forward movements of the nozzles 176, the intersection of the engaging member 320 with the stop member 284 placing the nozzles 176 in the corners at the boundaries between said wiped and unwiped margin portions. The motor 282 acts as means for thereafter removing the stop member 284 from said particular location to enable the nozzles 176 to resume their forward movement so as to being the nozzles to said boundaries. The motors motor 126, 190 and 182 act acts as means operative when the nozzles 176 have arrived at said boundaries to effect rearward movement of for thereafter moving the nozzles while maintaining the nozzles in said corners. The cement pumping mechanism 132 acts as means for extruding cement from the nozzles 176 into said corners during said rearward movements of the nozzles. rearwardly.

The machine described in the preceding paragraph is improved, in accordance with this invention, by comprising a detector member, constituted by the finger 56, that is mounted for forward-rearward movement. The rods 262, 264 movably mounting the stop member 284 and the links 322, 324 connecting the stop member 284 to the detector member 56 constitute means so mounting the stop member 284 and so connecting the stop member to the detector member 56 as to cause the stop member to have forward-rearward movement in unison with the detector member. The motor 32 acts as means for initially locating the detector member 56 in a forward position that is forward of the toe end extremity of the shoe assembly 336 and also acts as means, operative prior to the forward movement of the nozzles 176 first mentioned in the preceding paragraph, for yieldably moving the detector member 56, together with the stop member 284, rearwardly to bring the detector member into engagement with the toe end extremity of the shoe assembly and to thereby bring the stop member to said particular location.

The means mounting the stop member 284 and connecting the stop member to the detector member 56 comprises the housing 266, herein referred to as a back housing, to which the stop member is mounted, the back housing 266 being mounted for forward-rearward movement, and the connection formed by the links 322, 324 between the detector member 56 and the back housing 266 enabling the detector member and the back housing to have unitary forward-rearward movement. The stop member 284 is mounted to the back housing 266 for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member 320. The means for removing the stop member 284 from said particular location comprises the motor 282 which acts as means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member 320 with the stop member 284 during the resumption of the forward movement of the nozzles 176, referred to in the preceding paragraph, when the stop member 284 is in said forward stop member position being determinative of the arrival of the nozzles 176 at said boundaries.

The shoe assembly support 63 comprises the last pin 20 and the support plate 22, which constitute a back support element for supporting the backpart of the shoe assembly 336, and the toe rest 44, which constitutes a front support element for supporting the forepart of the shoe assembly 336. The housing 30, hereafter referred to as a front housing, is located forwardly of the back support element 20, 22 and is mounted for forward-rearward movement and the front support element 44 is mounted to the front housing 30. The detector member 56 is mounted to the front housing 30 and is located forwardly of and extends upwardly of the front support element 44. The motor 32, which acts as means for yieldably moving the detector member 56 rearwardly, is a yieldable force applying drive mechanism that is connected to the front housing 30. The connection formed by the links 322, 324 is between the front housing 30 and the back housing 266, which is a back housing, and enables the two housings to have unitary forward-rearward movement.

With respect to a second aspect of the invention, the machine is operable on the shoe assembly 336 that is formed of the last 338 having the insole 340 located on its bottom and the upper 342 mounted thereon. The shoe assembly support 63 supports the shoe assembly 336 bottom-up with the toe end of the shoe assembly facing forwardly and with the side and heel portions of the upper margin extending upwardly of the insole. The main slide plate 90, located rearwardly of the support 63, is mounted for forward-rearward movement. The heel wipers 100 constitute heel wiping means that are mounted to the slide plate 90 for forward movement with respect to this slide plate in a heel wiping stroke from a retracted position wherein the heel wiping means 100 is in a position in readiness for wiping to an advanced position wherein the heel wiping means 100 has wiped the heel portion of the upper margin against the corresponding portion of the insole periphery. The heel clamp bight 360 constitutes a shoe assembly engaging member that is mounted to the slide plate 90 below the heel wiping means 100. The lasting straps 366 constitute side wiping means, located on each side of the support 63, that are each mounted for inward movement from a position of disengagement with the shoe assembly 336 through a side wiping stroke to an inner position wherein the side wiping means 366 has wiped a side portion of the upper margin against a corresponding portion of the insole periphery. The motor 92 acts as means for initially maintaining the slide plate 90 in a rearward position. The heel wiping means 100 is initially maintained in its retracted position by an air operated motor 380 (FIGS. 16 and 17) being so actuated as to retract its piston rod 382 in the manner shown in U.S. Pat. No. 3,963,840. The motor 92 is thereafter so actuated as to provide means for thereafter moving the slide plate 90 forwardly until the shoe assembly engaging member 360 engages the heel end extremity of the shoe assembly. The motor 380 is thereafter so actuated as to project its piston rod 382 and thereby, in the manner shown in U.S. Pat. No. 3,963,840, act as means for imparting a heel wiping stroke to the heel wiping means 100. The projection of the piston rods 70 out of the motors 68 constitutes means for initially maintaining each side wiping means 366 in its position of disengagement. Motors 384 and 368 (FIG. 13) are thereafter so actuated as to constitute means for imparting said side wiping stroke to each of said side wiping means 366 in the manner shown in U.S. Pat. Nos. 3,775,797; 3,962,741 and 3,963,840.

The machine described in the preceding paragraph is improved, in accordance with this invention, by comprising connecting means, constituted by the rods 82, mounting each side wiping means 366 for forward-rearward movement and means, constituted by the members 328, 330 and 332, so connecting each side wiping means 366 to the slide plate 90 as to cause forward movement of the side wiping means 366 concomitantly with said forward movement of the slide plate 90 whereby the heel wiping stroke and the side wiping strokes may be performed simultaneously regardless of the position of engagement of the shoe assembly engaging member 360 with the heel end extremity of the shoe assembly 336.

In accordance with the second aspect of the invention, the machine incorporates the sled 80 located on each side of the support 63 with each side wiping means 366 being mounted to its associated sled for inward-outward movement to thereby provide said mounting for inward-outward movement of the side wiping means. The motors 68 constitute means for initially maintaining each sled 80 in an outer position to thereby place each side wiping means 366 in a relatively remote position from the support 63 to permit placement of the shoe assembly 336 on the support 63. The motors 68 also act as means for thereafter moving each sled 80 inwardly to thereby place each side wiping means 366 in its position of disengagement. In accordance with this invention, the machine has the improvement wherein the connecting means comprises the connecting member in the form of the rod 330 associated with each sled 80 that is rigidly connected to the slide plate 90 and is so connected to its associated sled 80 as to permit inward-outward movement of its associated sled.

In the embodiment of the first aspect of the invention herein disclosed, the nozzles 176, in addition to being mounted for forward-rearward movement, are mounted for heightwise movement and for inward-outward movement. The stop member 284 is located in a particular location. The motors 190 and 182 respectively act as means for initially retaining the nozzles 176 in upper and inner positions and also constitute means, operative after the motor 126 has moved the nozzles 176, togehter with the engaging member 320, forwardly until the engaging member 320 engages the stop member 284, for effecting lowering and outward movements of the nozzles 176 to move the nozzles into said corners heelwardly of said boundaries. The motor 282 acts as means for thereafter removing the stop member 284 from said particular location to enable the nozzles 176 to resume their forward movements so as to bring the nozzles to said boundaries. The motors 126, 190 and 182 act as means operative when the nozzles 176 have arrived at said boundaries to effect rearward movements of the nozzles while maintaining the nozzles in said corners. The cement extruding means 132 extrudes cement from the nozzles 176 into said corners during said rearward movement of the nozzles.

The means mounting the stop member 284 and connecting the stop member to the detector member 56 comprises the back housing 266, to which the stop member is mounted, the back housing being mounted for forward-rearward movement, and the connection formed by the links 322, 324 between the detector member 56 and the back housing 266 enabling the detector member and the back housing to have unitary forward-rearward movement. The stop member 284 is mounted to the back housing 266 for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member 320. The means for removing the stop member 284 from said particular location comprises the motor 282 which acts as means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member 320 with the stop member 284 during the resumption of the forward movements of the nozzles 176, referred to in the preceding paragraph, when the stop member is in said forward stop member position being determinative of the arrival of the nozzles 176 at said boundaries.

With respect to a third second aspect of the invention, the machine incorporates a mechanism for applying a substantially uniform quantity of cement along the surface of a workpiece. This mechanism includes the nozzle 176 mounted for movement from a starting position to a final position along the workpiece and the motor 126 connected to the nozzle operable to effectuate said nozzle movement. The motor 126 has controls that act as means for initially causing the motor to maintain the nozzle 176 in said starting position and means for thereafter operating the motor to effect said nozzle movement. The cement pumping mechanism 132 constitutes means for extruding cement from the nozzle 176 during said nozzle movement.

In accordance with the third second aspect of the invention, the mechanism described in the preceding paragraph has the improvement that includes first extrusion rate control means, effective at the beginning of the nozzle movement when the motor 126 is moving the nozzle 176 at a relatively slow speed, to cause the extruding means 132 to extrude the cement from the nozzle at a relatively slow rate and second extrusion rate control means, operable after the nozzle 176 has moved a prescribed distance from its starting position that is less than the distance from its starting position to its final position at which time the motor 126 is moving the nozzle at a relatively high speed, to cause the extruding means 132 to extrude the cement from the nozzle at a relatively high rate.

The cement applying mechanism includes the cam 254 which acts as an actuating member and the valve 232 which acts as a control member, the control member 232 being so located in intersecting relationship with the actuating member 254 as to be intersected by the actuating member when the nozzle 176 has moved through said prescribed distance. The cement applying mechanism also includes a control that acts as means responsive to the intersection of the actuating member 254 with the control member 232 for operating said second extrusion rate control means.

The extruding means 132 includes the motor 146 which functions as a fluid pressure operated pump. The first extrusion rate control means comprises means for causing pressurized fluid to pass to the pump 146 to operate the pump at a relatively low pressure and the second extrusion rate control means comprises means for causing pressurized fluid to pass to the pump 146 to operate the pump at a relatively high pressure.

Claims

1. A machine, operable on a shoe assembly formed of a last having an insole located on its bottom and an upper mounted thereon with the toe portion of the upper margin being wiped against and secured to the insole and unwiped portions of the upper margin extending heelwardly of said wiped upper margin portion, for applying cement in the corners between said unwiped margin portions and the corresponding portions of the insole periphery compising: a shoe assembly support for supporting the shoe assembly bottom-up with the toe end of the shoe assembly facing forwardly; a pair of nozzles, located above the shoe assembly, mounted for forward-rearward movement, for heightwise movement, and for inward-outward movement; a stop member located in a particular location; an engaging member, mounted for forward-rearward movement in unison with the nozzles, located rearwardly of the stop member in intersecting relationship with the stop member; means for initially retaining the nozzles in rearward, upper and inner positions; means for thereafter moving the nozzles, together with the engaging member, forwardly until the engaging member intersects the stop member; means for thereafter effecting lowering and outboard outward movements of the nozzles to move the nozzles into said corners heelwardly of the boundaries between said wiped and unwiped upper margin portions; means for thereafter removing the stop member from said particular location to enable the nozzles to resume their forward movement so as to bring the nozzles to said boundaries; means operative when the nozzles have arrived at said boundaries to effect rearward movement of the nozzles while maintaining the nozzles in said corners; and means for extruding cement from the nozzles into said corners during said rearward movements of the nozzles; the machine having the improvement comprising: a detector member mounted for forward-rearward movement; means so mounting the stop member and so connecting the stop member to the detector member as to cause the stop member to have forward-rearward movement in unison with the detector member; means for initially locating the detector member in a forward position that is forward of the toe end extremity of the shoe assembly; and means, operative prior to said first mentioned forward movement of the nozzles, for yieldably moving the detector member, together with the stop member, rearwardly to bring the detector member into engagement with the toe end extremity of the shoe assembly and to thereby bring the stop member to said particular location.

2. The machine of claim 1 wherein said means mounting the stop member and connecting the stop member to the detector member comprises: a back housing, to which the stop member is mounted, mounted for forward-rearward movement; and a connection between the detector member and the back housing enabling the detector member and the back housing to have unitary forward-rearward movement; wherein said stop member is mounted to the back housing for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member; and wherein said means for removing the stop member from said particular location comprises means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member with the stop member during said resumption of the forward movement of the nozzles when the stop member is in said forward stop member position being determinative of the arrival of the nozzles at said boundaries.

3. The machine of claim 1 wherein said shoe assembly support comprises: a back support element for supporting the backpart of the shoe assembly; a front housing located forwardly of the back support element mounted for forward-rearward movement; and a front support element for supporting the forepart of the shoe assembly mounted to the front housing; wherein said detector member is mounted to the front housing and is located forwardly of and extends upwardly of the front support element; wherein said means for yieldably moving the detector member rearwardly comprises a yieldable force applying drive mechanism connected to the front housing; and wherein said means mounting the stop member and connecting the stop member to the detector member comprises: a back housing, to which the stop member is mounted, mounted for forward-rearward movement; and a connection between the front housing and the back housing enabling the two housings to have unitary forward-rearward movement.

4. The machine of claim 3 wherein said stop member is mounted to the back housing for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member; and wherein said means for removing the stop member from said particular location comprises means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member with the stop member during said resumption of the forward movement of the nozzles when the stop member is in said forward stop member position being determinative of the arrival of the nozzles at said boundaries.

5. A machine, operable on a shoe assembly formed of a last having an insole loated on its bottom and an upper mounted thereon with the toe portion of the upper margin being wiped against and secured to the insole and unwiped portions of the upper margin extending heelwardly of said wiped upper margin portion, for applying cement in the corners between said unwiped margin portions and the corrresponding portions of the insole periphery comprising: a shoe assembly support for supporting the shoe assembly bottom-up with the toe end of the shoe assembly facing forwardly; a pair of nozzles, located above the shoe assembly, mounted for forward-rearward movement, for heightwise movement, and for inward-outward movement; a housing; a stop member, mounted to said housing, located in a particular location; an engaging member, mounted for forward-rearward movement in unison with the nozzles, located rearwardly of the stop member in intersecting relationship with the stop member; means for initially retaining the nozzles in rearward, upper, and inner positions; means for thereafter moving the nozzles, together with the engaging member, forwardly until the engaging member intersects the stop member; means for thereafter effecting lowering and outward movement of the nozzles to move the nozzles into said corners heelwardly of the boundaries between said wiped and unwiped upper margin portions; means for thereafter removing the stop member from said particular location to enable the nozzles to resume their forward movement so as to bring the nozzles to said boundaries; means operative when the nozzles have arrived at said boundaries to effect rearward movement of the nozzles while maintaining the nozzles in said corners; and means for extruding cement from the nozzles into said corners during said rearward movement of the nozzles; the machine having the improvement wherein said stop member is mounted to the housing for forward movement from a rearward stop member position that is determinative of said particular location to a forward stop member position that is in intersecting relationship with the engaging member; and wherein said means for removing the stop member from said particular location comprises means for moving the stop member from said rearward stop member position to said forward stop member position, the intersection of the engaging member with the stop member during said resumption of the forward movement of the nozzles when the stop member is in said forward stop member position being determinative of the arrival of the nozzles at said boundaries.

6. A mechanism for applying a substantially uniform quantity of cement along the surface of a workpiece comprising: a nozzle mounted for movement from a starting position to a final position along the workpiece; a motor connected to the nozzle operable to effectuate said nozzle movement; means for initially causing the motor to maintain the nozzle stationary in said starting position; means for thereafter operating the motor to effect said nozzle movement; and extruding means for extruding cement from the nozzle during said nozzle movement; the mechanism having the improvement comprising: first extrusion rate control means, effective at the beginning of the nozzle movement when the motor is moving the nozzle at a relatively slow speed, to cause the extruding means to extrude the cement from the nozzle at a relatively slow rate; and second extrusion rate control means, operable after the nozzle has moved a prescribed distance from its starting position that is less than the distance from its starting position to its final position at which time the motor is moving the nozzle at a relatively high speed, to cause the extruding means to extrude the cement from the nozzle at a relatively high rate.

7. The mechanism of claim 6 comprising: an actuating member mounted for movement with the nozzle; a control member so located in intersecting relationship with the actuating member as to be intersected by the actuating member when the nozzle has moved through said prescribed distance; and means responsive to the intersection of the actuating member with the control member for operating said second extrusion rate control means.

8. The mechanism of claim 6 wherein said extruding means comprises a fluid pressure operated pump; wherein said first extrusion rate control means comprises means for causing pressurized fluid to pass to the pump to operate the pump at a relatively low pressure; and wherein said second extrusion rate control means comprises means for causing pressurized fluid to pass to the pump to operate the pump at a relative high pressure.

9. The mechanism of claim 8 comprising: an actuating member mounted for movement with the nozzle; a control member so located in intersecting relationship with the actuating member as to be intersected by the actuating member when the nozzle has moved through said prescribed distance; and means responsive to the intersection of the actuating member with the control member for operating said second extrusion rate control means. 10. A machine, operable on a shoe assembly formed of a last having an insole located on its bottom and an upper mounted thereon with the toe portion of the upper margin being wiped against and secured to the insole and unwiped portions of the upper margin extending heelwardly of said wiped upper margin portion, for applying cement in the corners between said unwiped margin portions and the corresponding portions of the insole periphery comprising: a shoe assembly support for supporting the shoe assembly bottom-up with the toe end of the shoe assembly facing forwardly; a pair of nozzles, located above the shoe assembly, mounted for forward-rearward movement; means operable to extrude cement from the nozzles into said corners; a detector member mounted for forward-rearward movement; a stop member; means so mounting the stop member and so connecting the stop member to the detector member as to cause the stop member to have forward-rearward movement in unison with the detector member; an engaging member, mounted for forward-rearward movement in unison with the nozzles, located rearwardly of the stop member in intersecting relationship with the stop member; means for initially locating the nozzles in rearward positions; means for initially locating the detector member in a forward position that is forward of the toe end extremity of the shoe assembly; means for thereafter yieldably moving the detector member, together with the stop member, rearwardly to bring the detector member into engagement with the toe end extremity of the shoe assembly; means for thereafter moving the nozzles, together with the engaging member, forwardly until the engaging member intersects the stop member; means for maintaining the nozzles in said corners during at least the latter part of the forward movements of the nozzles, the intersection of the engaging member with the stop member placing the nozzles in said corners at the boundaries between said wiped and unwiped margin portions; and means for thereafter moving the nozzles rearwardly. 11. The machine of claim 10 wherein said shoe assembly support comprises: a back support element for supporting the backpart of the shoe assembly; a front housing, located forwardly of the back support element, mounted for forward-rearward movement; and a front support element for supporting the forepart of the shoe assembly mounted to the front housing; wherein said detector member is mounted to the front housing and is located forwardly of and extends upwardly of the front support element; wherein said means for yieldably moving the detector member rearwardly comprises a yieldable force applying drive mechanism connected to the front housing; and wherein said means mounting the stop member and connecting the stop member to the detector member comprises: a back housing, to which the stop member is mounted, mounted for forward-rearward movement; and a connection between the front housing and the back housing enabling the two housings to have unitary forward-rearward movement.