Shoe lasting machine

Abstract

The present invention discloses a shoe lasting machine, comprising: a frame with a shoe hole formed on its upper surface; a clamping module comprising a mounting frame, a first linear drive device, and two clamping mechanisms, wherein the mounting frame is fixedly connected to the frame, and the two clamping mechanisms are both slidably connected to the mounting frame. The two clamping mechanisms are moved away from or toward each other by the first linear drive device. The two clamping mechanisms are each provided with an openable and closable clamping portion, the closing amplitude of the clamping portion being positively correlated with the displacement of the corresponding clamping mechanism inward, and the two clamping portions together forming a clamping space directly opposite the shoe hole; and a sole pressing module comprising a placement platform and a second linear drive device, wherein the placement platform is located below the clamping module and covers the clamping space, and the second linear drive device is mounted on the frame and drives the placement platform to move up and down. The present invention can fully automate the snow boot pressing process, effectively protecting workers' health and significantly improving snow boot production efficiency.

Description

Technical Field

[0001] The invention relates to the field of shoemaking equipment, in particular to a shoe lasting machine. Background Art

[0002] The upper of snow boots generally protrudes from the sole. When processing snow boots, glue is needed to stick the sole and the upper together. In subsequent processes, external force is also needed to press the sole and the upper against each other to improve the fit between the sole and the upper, thereby reducing the risk of degumming of the sole.

[0003] The above-mentioned pressing process is currently performed by workers, which is not only inefficient but also easily causes workers to inhale excessive amounts of glue, seriously affecting their health. Summary of the Invention

[0004] The present invention aims to provide a shoe lasting machine to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] A shoe lasting machine according to a first embodiment of the present invention comprises:

[0006] a frame having shoe holes on its upper surface;

[0007] The clamping module includes a mounting frame, a first linear drive device, a front heel clamping mechanism and a rear heel clamping mechanism, the mounting frame is fixedly connected to the frame, the front heel clamping mechanism and the rear heel clamping mechanism are both connected to the mounting frame in a forward and backward sliding manner, the front heel clamping mechanism is located in front of the rear heel clamping mechanism, the inner side of the front heel clamping mechanism faces the rear heel clamping mechanism, and the inner side of the rear heel clamping mechanism faces the front heel clamping mechanism, and the front heel clamping mechanism and the rear heel clamping mechanism are connected by The first linear drive devices move away from or toward each other, the front heel clamping mechanism is provided with an openable and closable front heel clamping portion, the closing amplitude of the front heel clamping portion is positively correlated with the displacement of the front heel clamping mechanism toward the inner side, the heel clamping mechanism is provided with an openable and closable rear heel clamping portion, the closing amplitude of the rear heel clamping portion is positively correlated with the displacement of the rear heel clamping mechanism toward the inner side, the front heel clamping portion and the rear heel clamping portion jointly form a clamping space, and the clamping space is positively corresponding to the shoe hole;

[0008] The bottom pressing module includes a placement platform and a second linear drive device. The placement platform is located below the clamping module and covers the clamping space. The second linear drive device is installed on the frame and drives the placement platform to move up and down.

[0009] The shoe lasting machine according to the embodiment of the present invention has at least the following beneficial effects: when snow boots need to be lasted, the snow boots equipped with the shoe last can be placed on the placement platform. Since the front heel clamping mechanism and the heel clamping mechanism are both located at the outermost side at this time, the clamping space is at its maximum size to accommodate snow boots of any size. Subsequently, the first linear drive device is controlled to drive the front heel clamping mechanism and the heel clamping mechanism to move inward at the same time. During this process, the front heel clamping part and the heel clamping part are respectively moved toward the snow. The front heel and the rear heel of the boot are brought closer and gradually closed until the front heel clamping part and the rear heel clamping part are both clamped around the snow boot. At this time, the upper of the snow boot is located below the two clamping parts. Then the second linear drive device is controlled to drive the placement platform to move upward. Under the interaction between the placement platform and the two clamping parts, the sole of the snow boot is pressed against its upper. Compared with the existing technology, the invention can realize the full automation of the snow boot pressing process, effectively protect the health of workers, and greatly improve the production efficiency of snow boots.

[0010] According to some embodiments created by the present invention, since snow boots are divided into left shoes and right shoes, in order to press the left shoe and the right shoe at the same time, the number of the shoe holes, clamping modules and bottom pressing modules are all two, the two shoe holes are divided into left shoe holes and right shoe holes, the left shoe holes and the right shoe holes are spaced apart on the left and right, the two clamping spaces are divided into left shoe clamping space and right shoe clamping space, the two placing platforms are divided into left shoe placing platform and right shoe placing platform, the left shoe clamping space and the right shoe clamping space are respectively opposite to the left shoe hole and the right shoe hole, the left shoe placing platform and the right shoe placing platform respectively cover the left shoe clamping space and the right shoe clamping space.

[0011] According to some embodiments created by the present invention, the front heel clamping mechanism includes a front skateboard, a front slider, a front linkage assembly, a first front heel clamping plate and a second front heel clamping plate, the front skateboard is connected to the mounting frame for forward and backward sliding, the front slider is connected to the front skateboard for forward and backward sliding, the front skateboard drives the front slider to move through the front linkage assembly, the front end of the first front heel clamping plate and the front end of the second front heel clamping plate are hinged on the front slider, so that the first front heel clamping plate and the second front heel clamping plate jointly form the openable and closable front heel clamping part, thereby realizing the linkage between the front skateboard and the front heel clamping part.

[0012] According to some embodiments of the present invention, the first front heel splint and the second front heel splint are both provided with a front guide groove, and the front slide plate is provided with two front pulleys, and the two front pulleys slide along the two front guide grooves respectively, and the two front guide grooves are arranged in an "eight" shape, and the distance between the front ends of the two front guide grooves is smaller than the distance between the rear ends of the two front guide grooves, so that the closing amplitude of the front heel clamping part can be positively correlated with the displacement of the front heel clamping mechanism in the inward direction.

[0013] According to some embodiments of the present invention, a first thinned cleat is provided at the rear end of the first front heel cleat, and a second thinned cleat is provided at the rear end of the second front heel cleat. The first and second thinned cleats are used to clamp the left and right sides of the snow boot. Because both the first and second thinned cleats are thin plates, they can avoid interference with the heel clamping portion during the process of clamping the snow boot.

[0014] According to some embodiments of the present invention, the heel clamping mechanism includes a rear skateboard, a rear slider, a rear linkage assembly, a first heel clamping plate and a second heel clamping plate, the rear skateboard is connected to the mounting frame for forward and backward sliding, the rear slider is connected to the rear skateboard for forward and backward sliding, the rear skateboard drives the rear slider to move through the rear linkage assembly, the rear end of the first heel clamping plate and the rear end of the second heel clamping plate are hinged on the rear slider, so that the first heel clamping plate and the second heel clamping plate together form the openable and closable heel clamping part, thereby realizing the linkage between the rear skateboard and the heel clamping part.

[0015] According to some embodiments of the present invention, the first linear drive device is provided with two first telescopic rods that can be synchronously extended and retracted, the two first telescopic rods are respectively connected to the front skateboard and the rear skateboard, the first heel splint and the second heel splint are both provided with rear guide grooves, the rear skateboard is provided with two rear pulleys, the two rear pulleys slide along the two rear guide grooves respectively, the two rear guide grooves are arranged in an "eight" shape, the distance between the rear ends of the two rear guide grooves is smaller than the distance between the front ends of the two rear guide grooves, so that the closing amplitude of the heel clamping part can be positively correlated with the displacement of the heel clamping mechanism in the inward direction.

[0016] According to some embodiments of the present invention, the front linkage assembly and the rear linkage assembly both include a first fixed block, a second fixed block, a guide rod and a spring, the two first fixed blocks are fixedly connected to the front slide and the rear slide, respectively, the two second fixed blocks are fixedly connected to the front slider and the rear slider, one end of the guide rod passes through the first fixed block and is fixedly connected to the second fixed block, the other end of the guide rod is provided with a limit block, and the spring is sleeved on the guide rod and located between the first fixed block and the second fixed block. When the first linear drive device drives the front slide plate and the rear slide plate to move inward at the same time, the first fixed block moves inward. Since the first fixed block can drive the second fixed block to move inward through the spring, the front slide plate and the rear slide plate can respectively drive the front slider and the rear slider to move inward until the front heel clamping part and the heel clamping part respectively abut against the front heel and the heel of the snow boot. Since the first linear drive device can still drive the front slide plate and the rear slide plate to move inward, the positions of the two clamping parts remain unchanged at this time, and the positions of the two slides gradually approach each other, so that the front heel clamping part and the heel clamping part can be in the guide groove and the pulley to clamp the snow boots; when the first linear drive device simultaneously drives the front skateboard and the rear skateboard to move outward, the first fixed block moves outward, and since the positions of the two clamping parts remain unchanged and the positions of the two skateboards gradually move away, the front heel clamping part and the heel clamping part can release the snow boots under the action of the guide groove and the pulley, and when the first fixed block moves outward to abut against the limit block of the guide rod, since the first fixed block can drive the second fixed block to move outward, the front skateboard and the rear skateboard can respectively drive the front slider and the rear slider to move outward, causing the front heel clamping part and the heel clamping part to move away from the snow boot.

[0017] According to some embodiments of the present invention, since snow boots of different specifications have soles of different heights, in order to ensure that the upper of the snow boots is always located below the front heel clamping part and the rear heel clamping part, the installation height of the second linear drive device is adjustable so as to adjust the relative height between the placement platform and the clamping module.

[0018] According to some embodiments of the present invention, since air cylinders, oil cylinders or electric push rods can all achieve linear drive, the first linear drive device and the second linear drive device are both air cylinders, oil cylinders or electric push rods.

[0019] Additional aspects and advantages of the present invention will be given in part in the description below and in part will become obvious from the description below or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 1. It is a schematic diagram of the three-dimensional structure of a shoe lasting machine according to an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A top view of a shoe lasting machine is shown;

[0023] Figure 3 yes Figure 1 A front view of a shoe lasting machine with part of the outer shell removed;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping module according to an embodiment of the present invention;

[0025] Figure 5 yes Figure 4 A left side view of the clamping module is shown;

[0026] Figure 6 yes Figure 4 An exploded perspective view of the clamping module shown with the mounting bracket removed;

[0027] Figure 7 yes Figure 4 The clamping module is shown in a top view with the mounting bracket removed. DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this invention, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] like Figures 1 to 3 As shown, a shoe lasting machine according to a first embodiment of the present invention includes a frame 100, a clamping module 20, and a sole pressing module 30. The frame 100 is covered by a housing 110. Since snow boots are divided into left and right shoes, two shoe holes 120 are provided on the upper surface of the frame 100 to simultaneously press the left and right shoes. The two shoe holes 120 are divided into left and right shoe holes, and the left and right shoe holes are spaced apart. There are two clamping modules 20 and two sole pressing modules 30, each of which is installed within the frame 100, with the clamping module 20 located below the shoe holes 120 and the sole pressing module 30 located below the clamping module 20. Since the two clamping modules 20 and the two sole pressing modules 30 are mirror images of each other, in this embodiment, only the clamping module 20 and the sole pressing module 30 located on the left are described in detail.

[0033] like Figures 4 to 7As shown, the clamping module 20 located on the left side includes a mounting frame 21 , a first linear drive device 400 , a front heel clamping mechanism 200 and a rear heel clamping mechanism 300 , and the mounting frame 21 is fixedly connected to the frame 100 . Specifically, the front heel clamping mechanism 200 includes a front skateboard 210, a front slider 220, a front linkage assembly 230, a first front heel clamping plate 240 and a second front heel clamping plate 250. The front skateboard 210 is connected to the mounting frame 21 for forward and backward sliding through a slide rail slider assembly. The front slider 220 is connected to the center line of the front skateboard 210 for forward and backward sliding. The front skateboard 210 drives the front slider 220 to move through the front linkage assembly 230. The front end of the first front heel clamping plate 240 and the front end of the second front heel clamping plate 250 are hinged on the front slider 220, so that the first front heel clamping plate 240 and the second front heel clamping plate 250 jointly form an openable and closable front heel clamping portion 260, and the shape of the front heel clamping portion 260 is similar to the front and middle parts of the snow boots. The first front heel splint 240 and the second front heel splint 250 are both provided with a front guide groove 261, and the front skateboard 210 is provided with two front pulleys 211, and the two front pulleys 211 slide along the two front guide grooves 261 respectively, and the two front guide grooves 261 are arranged in an "eight" shape, and the distance between the front ends of the two front guide grooves 261 is smaller than the distance between the rear ends of the two front guide grooves 261, so that when the front skateboard 210 moves forward relative to the front heel clamping part 260, the front heel clamping part 260 is in a loose state, and when the front skateboard 210 moves backward relative to the front heel clamping part 260, the front heel clamping part 260 is in a clamped state.

[0034] At the same time, the heel clamping mechanism 300 is located behind the heel clamping mechanism 300 , the inner side of the front heel clamping mechanism 200 faces the heel clamping mechanism 300 , and the inner side of the heel clamping mechanism 300 faces the front heel clamping mechanism 200 . Specifically, the heel clamping mechanism 300 includes a rear skateboard 310, a rear slider 320, a rear linkage assembly 330, a first heel splint 340 and a second heel splint 350. The rear skateboard 310 is connected to the mounting frame 21 for forward and backward sliding movement through a slide rail slider assembly. The rear slider 320 is connected to the center line of the rear skateboard 310 for forward and backward sliding movement. The rear skateboard 310 drives the rear slider 320 to move through the rear linkage assembly 330. The rear end of the first heel splint 340 and the rear end of the second heel splint 350 are hinged on the rear slider 320, so that the first heel splint 340 and the second heel splint 350 together form an openable and closable heel clamping portion 360, and the shape of the heel clamping portion 360 is similar to the rear and middle parts of the snow boots. The first heel splint 340 and the second heel splint 350 are both provided with a rear guide groove 361, and the rear skateboard 310 is provided with two rear pulleys 311, and the two rear pulleys 311 slide along the two rear guide grooves 361 respectively, and the two rear guide grooves 361 are arranged in an "eight" shape, and the distance between the rear ends of the two rear guide grooves 361 is smaller than the distance between the front ends of the two rear guide grooves 361, so that when the rear skateboard 310 moves backward relative to the heel clamping part 360, the heel clamping part 360 is in a loose state, and when the rear skateboard 310 moves forward relative to the heel clamping part 360, the heel clamping part 360 is in a clamped state. The first linear drive device 400 is provided with two first telescopic rods 410 that can be synchronously extended and retracted. Specifically, the first linear drive device 400 can be a double-acting cylinder. The two first telescopic rods 410 are respectively connected to the front slide 210 and the rear slide 310, allowing the front slide 210 and the rear slide 310 to move away from or toward each other synchronously. It is understood that the present invention is not limited to the structure of the front guide slot 261 and the rear guide slot 361. The above embodiment is merely a preferred embodiment and is not intended to be limiting.

[0035] In some other embodiments, the number of the first linear drive devices 400 may be two, and the two first linear drive devices 400 respectively drive the front slide 210 and the rear slide 310 , without being limited to the above embodiments.

[0036] Since the present invention realizes the clamping and loosening of the snow boots by the front heel clamping part 260 and the rear heel clamping part 360, the front heel clamping part 260 and the rear heel clamping part 360 jointly form a clamping space 22, and the clamping space 22 is opposite to the shoe hole 120. The size of the clamping space 22 changes with the expansion and contraction of the first linear drive device 400.

[0037] Furthermore, the front linkage assembly 230 and the rear linkage assembly 330 both include a first fixed block 231, a second fixed block 232, a guide rod 233 and a spring (not shown in the drawings). The two first fixed blocks 231 are fixedly connected to the front skateboard 210 and the rear skateboard 310, respectively. The two second fixed blocks 232 are fixedly connected to the front slider 220 and the rear slider 320, respectively. One end of the guide rod 233 passes through the first fixed block 231 and is fixedly connected to the second fixed block 232. The other end of the guide rod 233 is provided with a limit block 234. The spring is sleeved on the guide rod 233 and located between the first fixed block 231 and the second fixed block 232.

[0038] like Figure 3 As shown, the bottom pressing module 30 located on the left side includes a placement platform 31 and a second linear drive device 500, the second linear drive device 500 can be optionally a cylinder, the placement platform 31 is located below the clamping module 20, the placement platform 31 covers the clamping space 22, the second linear drive device 500 is installed in the frame 100 through the channel steel 520, the second linear drive device 500 is provided with a second telescopic rod 510 that can be extended and retracted up and down, and the end of the second telescopic rod 510 is fixedly connected to the placement platform 31, so that the placement platform 31 can be lifted up and down to achieve the pressing of the soles of the snow boots.

[0039] With the above structure, when the snow boots need to be lasted, the snow boots with the shoe last can be placed on the placement platform 31. Since the front heel clamping mechanism 200 and the rear heel clamping mechanism 300 are both located at the outermost side at this time, the clamping space 22 is at its largest size to accommodate snow boots of any size. After the snow boots are placed, the first linear drive device 400 is controlled to simultaneously drive the front slide plate 210 and the rear slide plate 310 to move inward. At this time, the first fixed block 231 moves inward. Since the first fixed block 231 can drive the second fixed block 232 to move inward via the spring, the front slide plate 210 and the rear slide plate 310 can respectively drive the front slider 220 and the rear slider 320 to move inward until the front heel clamping portion 260 and the rear heel clamping portion 360 respectively abut against the front heel of the snow boot. and heel, since the first linear drive device 400 can still drive the front skateboard 210 and the rear skateboard 310 to move inward, the positions of the two clamping parts remain unchanged at this time and the positions of the two skateboards gradually approach, so that the front heel clamping part 260 and the heel clamping part 360 can clamp the snow boots under the action of the guide groove and the pulley, and the upper of the snow boot is located below the two clamping parts; after that, the second linear drive device 500 is controlled to drive the placement platform 31 to move upward, and under the interaction between the placement platform 31 and the two clamping parts, the sole of the snow boot is pressed against its upper. When the snow boots are lasted, the first linear drive device 400 is controlled to drive the front slide 210 and the rear slide 310 to move outward at the same time. At this time, the first fixed block 231 moves outward. Since the positions of the two clamping parts remain unchanged and the positions of the two slides gradually move away, the front heel clamping part 260 and the heel clamping part 360 can release the snow boots under the action of the guide groove and the pulley. When the first fixed block 231 moves outward to abut against the limit block 234 of the guide rod 233, the first fixed block 231 can drive the second fixed block 232 to move outward at this time. Therefore, the front slide 210 and the rear slide 310 can respectively drive the front slider 220 and the rear slider 320 to move outward, causing the front heel clamping part 260 and the heel clamping part 360 to move away from the snow boots, so as to achieve the removal of the snow boots.

[0040] It can be understood that the present invention does not limit the structure of the front heel clamping mechanism 200 and the front heel clamping mechanism 200. As long as the front heel clamping mechanism 200 and the front heel clamping mechanism 200 can clamp and release the snow boots, no matter what structure they are, they are within the scope of protection of the present invention.

[0041] In some embodiments of the present invention, since snow boots of different specifications have soles of different heights, in order to ensure that the upper of the snow boots is always located below the front heel clamping part 260 and the rear heel clamping part 360, the channel steel 520 is threadedly connected with a plurality of screws 521, and all the screws 521 extend to the upper surface of the frame 100 so that the screws 521 can be rotated to adjust the installation height of the second linear drive device 500, and then adjust the relative height between the placement platform 31 and the upper pressing module.

[0042] like Figures 5 to 7 As shown, in some embodiments of the present invention, the rear end of the first front heel cleat 240 is provided with a first thinned cleat 241, and the rear end of the second front heel cleat 250 is provided with a second thinned cleat 251. Correspondingly, the first heel cleat 340 and the second heel cleat 350 are each provided with a clearance position 362 for the corresponding thinned cleat to escape. The first thinned cleat 241 and the second thinned cleat 251 are used to clamp the left and right sides of the snow boot to achieve comprehensive clamping of the snow boot. Because the first thinned cleat 241 and the second thinned cleat 251 are both thin plate designs, during the process of clamping the snow boot, they can extend into the corresponding clearance position 362 to avoid interference with the heel clamping portion 360.

[0043] In some embodiments of the present invention, the front skateboard 210 and the rear skateboard 310 are respectively connected to a front bottom plate 212 and a rear bottom plate 312 below the front heel clamping portion 260 and below the heel clamping portion 360, so as to limit the upper and lower positions of the front heel clamping portion 260 and the heel clamping portion 360 to prevent them from falling off downward.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the upper surface of the frame 100 is further provided with control buttons 130 and a display screen 140 for user convenience.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. Shoe lasting machine, characterized in that: include: a frame having shoe holes on its upper surface; The clamping module includes a mounting frame, a first linear drive device, a front heel clamping mechanism, and a rear heel clamping mechanism, wherein the mounting frame is fixedly connected to the frame; the front heel clamping mechanism is located in front of the rear heel clamping mechanism, and the front heel clamping mechanism and the rear heel clamping mechanism are moved away from or closer to each other by the first linear drive device; The shoe assembly comprises a first fixing block, a second fixing block, a guide rod and a spring, the first fixing block is fixedly connected to the shoe assembly, the second fixing block is fixedly connected to the shoe assembly, and the second fixing block is fixedly connected to the shoe assembly. The sliding block is connected to the sliding block, one end of the guide rod passes through the first fixing block and is fixedly connected to the second fixing block, the other end of the guide rod is provided with a limit block, the spring is sleeved on the guide rod and is located between the first fixing block and the second fixing block; the first clamping plate and the second clamping plate are both provided with guide grooves, and the sliding plate is provided with two pulleys, and the two pulleys slide along the two guide grooves respectively, and the two guide grooves are arranged in an "eight" shape, so that the clamping part can clamp the snow boot under the action of the guide grooves and the pulleys after abutting against the snow boot; The bottom pressing module includes a placement platform and a second linear drive device. The placement platform is located below the clamping module and covers the clamping space. The second linear drive device is installed on the frame and drives the placement platform to move up and down.

2. The shoe lasting machine according to claim 1, characterized in that: The number of the shoe holes, clamping modules and sole pressing modules is two, the two shoe holes are divided into a left shoe hole and a right shoe hole, the left shoe hole and the right shoe hole are spaced apart on the left and right, the two clamping spaces are divided into a left shoe clamping space and a right shoe clamping space, the two placement platforms are divided into a left shoe placement platform and a right shoe placement platform, the left shoe clamping space and the right shoe clamping space are respectively opposite to the left shoe hole and the right shoe hole, the left shoe placement platform and the right shoe placement platform respectively cover the left shoe clamping space and the right shoe clamping space.

3. The shoe lasting machine according to claim 2, characterized in that: The slide plate, slider, linkage assembly, first clamping plate and second clamping plate of the front heel clamping mechanism are defined as a front slide plate, a front slider, a front linkage assembly, a first front heel clamping plate and a second front heel clamping plate respectively; the front slide plate is connected to the mounting frame for forward and backward sliding; the front slider is connected to the front slide plate for forward and backward sliding; the front slide plate drives the front slider to move via the front linkage assembly; the front end of the first front heel clamping plate and the front end of the second front heel clamping plate are hinged on the front slider, so that the first front heel clamping plate and the second front heel clamping plate together form an openable and closable front heel clamping part.

4. The shoe lasting machine according to claim 3, characterized in that: The first front heel plate and the second front heel plate are both provided with a front guide groove, and the front skateboard is provided with two front pulleys, and the two front pulleys slide along the two front guide grooves respectively, and the two front guide grooves are arranged in an "eight" shape, and the distance between the front ends of the two front guide grooves is smaller than the distance between the rear ends of the two front guide grooves.

5. The shoe lasting machine according to claim 4, characterized in that: A first thinned plywood is provided at the rear end of the first front heel plywood, and a second thinned plywood is provided at the rear end of the second front heel plywood.

6. The shoe lasting machine according to claim 3, characterized in that: The skateboard, slider, linkage assembly, first clamping plate and second clamping plate of the heel clamping mechanism are respectively defined as a rear skateboard, a rear slider, a rear linkage assembly, a first heel clamping plate and a second heel clamping plate, the rear skateboard is connected to the mounting frame for forward and backward sliding, the rear slider is connected to the rear skateboard for forward and backward sliding, the rear skateboard drives the rear slider to move through the rear linkage assembly, the rear end of the first heel clamping plate and the rear end of the second heel clamping plate are hinged on the rear slider, so that the first heel clamping plate and the second heel clamping plate together form an openable and closable heel clamping part.

7. The shoe lasting machine according to claim 6, characterized in that: The first linear drive device is provided with two first telescopic rods that can be telescoped synchronously, and the two first telescopic rods are respectively connected to the front skateboard and the rear skateboard, and the first heel splint and the second heel splint are both provided with rear guide grooves, and the rear skateboard is provided with two rear pulleys, and the two rear pulleys slide along the two rear guide grooves respectively, and the two rear guide grooves are arranged in an "eight" shape, and the distance between the rear ends of the two rear guide grooves is smaller than the distance between the front ends of the two rear guide grooves.

8. The shoe lasting machine according to claim 1 or 2, characterized in that: The installation height of the second linear drive device is adjustable.

9. The shoe lasting machine according to claim 1 or 2, characterized in that: The first linear drive device and the second linear drive device are both air cylinders, oil cylinders or electric push rods.

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