Shoe pulling and last removing machine

Abstract

The utility model relates to the technical field of shoe production, in particular to a shoe pulling and last removing machine. Comprising a workbench, an assembling box is fixedly arranged on one side of the workbench, a last slipping mechanism is arranged on the upper side of the assembling box, a last fixing mechanism is arranged at the position, corresponding to the last slipping mechanism, of the upper side of the workbench, and the last fixing mechanism comprises an adjusting box horizontally fixed to the upper side wall of the workbench through a support; and a long and thin cylinder is vertically fixed on the upper side wall of the sliding table. When the slender cylinder is inserted into the slot on the shoe tree, the displacement mechanism drives the plurality of moving blocks to be synchronously far away from the axis of the slender cylinder, so that one side, far away from the axis of the slender cylinder, of each moving block is tightly attached to the inner wall of the slot, and the shoe tree is internally supported and fixed and is fixed at the top end of the slender cylinder through cooperative expansion of the plurality of moving blocks; in the process that the shoe last slipping mechanism takes off the shoe from the shoe last, the shoe last is prevented from being separated from the long and thin cylinder along with the shoe, and therefore the success rate of delasting operation is increased.

Description

Technical Field

[0001] This utility model relates to the field of shoe manufacturing technology, specifically to a shoe last removal machine. Background Technology

[0002] The shoe last removal machine is a specialized piece of equipment used in the shoe manufacturing industry to separate the shoe last from the formed shoe body. Its core function is to achieve efficient separation of the shoe last from the shoe body through mechanical force, ensuring the integrity of the shoe shape and improving production efficiency. In the shoe manufacturing process, after the shoe is formed, the shoe last removal machine needs to be used to remove the shoe last from the formed shoe.

[0003] like Figure 9 As shown, in a prior art shoe last 5 installed in an inverted state, a positioning constraint is formed by inserting the positioning rod of the last-removing machine into its slot 51. To ensure the feasibility of loading and unloading operations, a clearance fit is used between the slot 51 and the positioning rod. However, this assembly method reveals a deficiency in retention performance during mechanism operation. When the last-removing mechanism applies a peeling force to the shoe body, the tensile force vector borne by the shoe last 5 can be decomposed into a normal component (along the axis of the positioning rod) and a tangential component (perpendicular to the axis of the positioning rod). Due to the radial degree of freedom margin generated by the clearance fit, the tangential component force will cause the shoe last to rotate circumferentially, while the normal component force will cause the axial displacement to be superimposed. Under the action of the combined force, the shoe last 5 will produce an unexpected displacement deflection, and the contact surface between its slot 51 and the positioning rod will form a separation angle, causing the friction between the shoe last 5 and the positioning rod to weaken rapidly. At this time, the shoe last and the shoe body form a rigid linkage, and the two simultaneously break away from the constraint of the positioning rod, ultimately causing the shoe last and the shoe body to be unable to separate, significantly reducing the success rate of the last removal process. Utility Model Content

[0004] The purpose of this utility model is to provide a shoe last removal machine to solve the problems mentioned in the background art above:

[0005] When the last-release mechanism applies a peeling force to the shoe body, the last is easily affected by the tension and will be displaced and deflected, causing the last and the shoe body to simultaneously detach from the positioning rod constraint, ultimately resulting in the last and the shoe body being unable to separate.

[0006] To address the above problems, the present invention aims to provide a shoe lasting and straightening machine, comprising a worktable, an assembly box fixedly mounted on one side of the worktable, a shoe lasting mechanism mounted on the upper side of the assembly box, and a shoe lasting mechanism mounted on the upper side of the worktable corresponding to the shoe lasting mechanism. The shoe lasting mechanism includes an adjusting box horizontally fixed to the side wall of the worktable by a bracket, a slide table slidably mounted inside the adjusting box, and a long thin cylinder vertically fixed to the upper side wall of the slide table. A plurality of movable openings are arranged in a circular array on the circumferential side wall of the long thin cylinder. The movable groove has a sliding block inside. The long thin tube has a displacement mechanism inside that drives several moving blocks to move away from or towards the axis of the long thin tube synchronously. When the moving block is in the initial state, the side of the moving block away from the axis of the long thin tube combines with the outer circumference of the long thin tube to form a complete smooth cylindrical surface. When the long thin tube is inserted into the slot on the shoe last, the displacement mechanism drives several moving blocks to move away from the axis of the long thin tube synchronously, so that the side of the moving block away from the axis of the long thin tube is in close contact with the inner wall of the slot, thus fixing the shoe last to the top of the long thin tube.

[0007] As a further improvement to this technical solution, the last-fixing mechanism also includes an end cap bolted to the upper end of the long thin cylinder. Slider blocks are fixedly provided at both the upper and lower ends of the moving block. Sliding grooves are provided on the end cap and the bottom side inside the movable groove at positions corresponding to each slider. The slider is slidably disposed in the corresponding sliding groove, and the slider cooperates with the corresponding sliding groove to restrict the movement path of the moving block.

[0008] As a further improvement to this technical solution, the displacement mechanism includes an electric telescopic rod that is vertically fixed inside the long thin cylinder. A movable wedge block is fixedly provided at the upper end of the piston rod of the electric telescopic rod. A fixed wedge block is fixed on the side of the movable block near the axis of the long thin cylinder. The fixed wedge block is in contact with the movable wedge block, and the side of the fixed wedge block that contacts the movable wedge block is set as an inclined surface. The side of the inclined surface near the axis of the long thin cylinder is located at a high position.

[0009] As a further improvement to this technical solution, the side of the moving block away from the axis of the long thin cylinder and the outer circumference of the long thin cylinder are provided with several embedded grooves. When the moving block is in the initial state, the embedded grooves at the same height combine to form a complete annular groove. A rubber ring is provided inside the annular groove, and the rubber ring is used to drive the expanded moving block to reset.

[0010] As a further improvement to this technical solution, the last-pulling mechanism includes a first cylinder vertically fixedly installed inside the assembly box. The upper end of the piston rod of the first cylinder slides through the upper side wall of the assembly box and is fixed to an assembly table. A positioning frame is bolted to the upper side wall of the assembly table. A second cylinder is horizontally fixedly installed on the side of the positioning frame away from the worktable. One end of the piston rod of the second cylinder slides through the positioning frame and is fixed to a push block. A crescent-shaped groove is opened on the side of the push block away from the positioning frame. The crescent-shaped groove can increase the contact area between the push block and the heel.

[0011] As a further improvement to this technical solution, a movable plate is provided on the upper side of the slide table. The movable plate is slidably sleeved on the outside of the long thin cylinder. A limit switch is fixedly installed on the side wall of the slide table, and the trigger rod of the limit switch contacts the lower side wall of the movable plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this shoe last removal machine, when the long thin tube is inserted into the slot on the shoe last, the displacement mechanism drives several moving blocks to move away from the axis of the long thin tube simultaneously, so that the side of the moving block away from the axis of the long thin tube is in close contact with the inner wall of the slot. Through the coordinated expansion of multiple moving blocks, the shoe last is internally supported and fixed, and the shoe last is fixed at the top of the long thin tube. During the process of the shoe last removal mechanism removing the shoe from the shoe last, the shoe last is prevented from detaching from the long thin tube along with the shoe, thereby improving the success rate of the shoe last removal operation.

[0014] 2. In this shoe last removal machine, when several moving blocks are used to internally support and fix the shoe last, the moving blocks elastically stretch the rubber ring. When the piston rod of the electric telescopic rod retracts and drives the moving wedge block to move vertically downward, the rubber ring rebounds and contracts, causing several moving blocks to return to their initial positions. This restores the side of the moving block away from the axis of the long thin cylinder to a continuous and smooth cylindrical surface with the outer circumference of the long thin cylinder. This releases the internal support and fixation of the shoe last by several moving blocks, making it easier for workers to remove the shoe last from the long thin cylinder after removing the shoes, and providing preparation conditions for the next round of internal support and fixation work. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the last-pulling mechanism of this utility model.

[0017] Figure 3 This is a schematic diagram of the last-fixing mechanism of this utility model;

[0018] Figure 4 This is one of the partial structural schematic diagrams of the last-fixing mechanism of this utility model;

[0019] Figure 5 This is a second partial structural schematic diagram of the last-fixing mechanism of this utility model;

[0020] Figure 6 For the present utility model Figure 5 Exploded view;

[0021] Figure 7 This is a partial structural schematic diagram of the displacement mechanism of this utility model;

[0022] Figure 8This is the third partial structural schematic diagram of the last-fixing mechanism of this utility model;

[0023] Figure 9 This is a schematic diagram of the structure of the shoe last of this utility model.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 1. Workbench; 2. Assembly box;

[0026] 3. Fixed last mechanism; 31. Adjustment box; 32. Slide table; 33. Long thin cylinder; 331. Movable groove; 34. Moving block; 341. Sliding block; 342. Fixed wedge block; 35. End cap; 36. Embedded groove; 37. Rubber ring; 38. Electric telescopic rod; 39. Moving wedge block;

[0027] 4. Pulling mechanism; 41. First cylinder; 42. Assembly table; 43. Positioning frame; 44. Second cylinder; 45. Push block;

[0028] 5. Shoe last; 51. Slot;

[0029] 6. Movable panel; 7. Limit switch. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1 and Figure 9 As shown, the purpose of this embodiment is to provide a shoe last removal machine, including a workbench 1, an assembly box 2 fixedly installed on one side of the workbench 1, a last removal mechanism 4 installed on the upper side of the assembly box 2, the last removal mechanism 4 being used to remove the shoe from the shoe last 5, and a last fixing mechanism 3 installed on the upper side of the workbench 1 at a position corresponding to the last removal mechanism 4, the last fixing mechanism 3 being used to fix the shoe last 5, when the worker fixes the shoe last 5 containing the shoe through the last fixing mechanism 3, the last removal mechanism 4 removes the shoe from the shoe last 5, separating the shoe from the shoe last 5, and then the worker removes the shoe last 5 from the last fixing mechanism 3, thereby completing the shoe last removal work.

[0033] The structure of the last fixing mechanism 3 is detailed below, referring to... Figures 3-8The last-setting mechanism 3 includes an adjustment box 31 horizontally fixed to the upper side wall of the worktable 1 via a bracket. A slide table 32 is slidably arranged inside the adjustment box 31. A long, thin cylinder 33 is vertically fixed to the upper side wall of the slide table 32. Several movable slots 331 are arranged in a circular array on the circumferential side wall of the long, thin cylinder 33. Moving blocks 34 are slidably arranged inside the movable slots 331. The last-setting mechanism 3 also includes an end cap 35 bolted to the upper end of the long, thin cylinder 33. Sliding blocks 341 are fixed to both the upper and lower ends of the moving blocks 34. Positions corresponding to each sliding block 341 are located on the end cap 35 and the bottom side of the movable slots 331. Each part is provided with a sliding groove, and the slider 341 is slidably disposed in the corresponding sliding groove. The cooperation between the slider 341 and the sliding groove constrains the moving block 34 to move only along a specific trajectory, so that the axis of the moving path of the moving block 34 passes through the axis of the long thin tube 33. At the same time, a displacement mechanism is provided inside the long thin tube 33 to drive several moving blocks 34 to move away from or towards the axis of the long thin tube 33 synchronously. After the upper end of the long thin tube 33 is inserted into the inside of the shoe last 5, the displacement mechanism drives several moving blocks 34 away from the axis of the long thin tube 33, so that several moving blocks 34 can provide internal support and fixation for the shoe last 5.

[0034] Reference Figure 5 When the moving block 34 is in its initial state, the side of the moving block 34 away from the axis of the long thin tube 33 combines with the outer circumferential wall of the long thin tube 33 to form a complete smooth cylindrical surface, which makes it convenient for workers to invert the shoe last 5 and move it downwards in the vertical direction, so that the upper end of the long thin tube 33 is inserted into the slot 51 at the bottom of the shoe last 5. When the long thin tube 33 is inserted into the slot 51 on the shoe last 5, the displacement mechanism drives several moving blocks 34 to move away from the axis of the long thin tube 33 at the same time, so that the side of the moving block 34 away from the axis of the long thin tube 33 is in close contact with the inner wall of the slot 51. Through the coordinated expansion of multiple moving blocks 34, the radial inward support and fixation of the shoe last 5 is finally achieved, and the shoe last 5 is fixed at the top of the long thin tube 33. During the process of the last-pulling mechanism 4 removing the shoe from the shoe last 5, the last-pulling mechanism 4 is prevented from removing the shoe last 5 from the long thin tube 33, thereby improving the success rate of shoe last removal.

[0035] The following details the structure of the displacement mechanism, referring to... Figure 6 and Figure 7The displacement mechanism includes an electric telescopic rod 38 vertically fixed inside the long thin cylinder 33. The electric telescopic rod 38 is a commercially available 30mm ultra-short stroke mini electric push rod. A movable wedge block 39 is fixedly installed at the upper end of the piston rod of the electric telescopic rod 38. A fixed wedge block 342 is fixed on the side of the moving block 34 near the axis of the long thin cylinder 33. The fixed wedge block 342 contacts the movable wedge block 39, and the side of the fixed wedge block 342 that contacts the movable wedge block 39 is set as an inclined surface. The side of the inclined surface near the axis of the long thin cylinder 33 is located at a higher position. When the piston rod of the electric telescopic rod 38 extends and drives the movable wedge block 39 to move vertically upward, the movable wedge block 39 generates relative displacement along the inclined surface of the fixed wedge block 342. The movable wedge block 39 pushes the corresponding fixed wedge block 342 and the moving block 34 in a direction away from the axis of the long thin cylinder 33, thereby internally supporting and fixing the shoe last 5 through several moving blocks 34.

[0036] Meanwhile, several embedded grooves 36 are provided on the side of the moving block 34 away from the axis of the long thin cylinder 33 and on the outer circumference of the long thin cylinder 33. When the moving block 34 is in the initial state, the embedded grooves 36 at the same height combine to form a complete annular groove. A rubber ring 37 is provided inside the annular groove. When the moving blocks 34 move away from the axis of the long thin cylinder 33, the moving blocks 34 stretch the rubber ring 37. When the piston rod of the electric telescopic rod 38 retracts and drives the moving wedge block 39 to move vertically downward, the rubber ring 37 rebounds and drives the moving blocks 34 to return to the initial position, so that the side of the moving block 34 away from the axis of the long thin cylinder 33 and the outer circumference of the long thin cylinder 33 return to a continuous smooth cylindrical surface. This releases the internal support fixation of the shoe last 5 by the moving blocks 34, making it convenient for workers to remove the shoe last 5 from the long thin cylinder 33 after it has been separated from the shoe.

[0037] A lead screw is horizontally rotatably mounted inside the adjusting box 31. One end of the lead screw rotates through the side wall of the adjusting box 31 and is coaxially fixed with a knob. The slide table 32 is threadedly connected to the lead screw. When the worker rotates the lead screw, the slide table 32 moves along the axis of the lead screw through the threaded connection between the lead screw and the slide table 32, thereby precisely adjusting the distance between the long thin cylinder 33 and the last-pulling mechanism 4, so that the equipment can adapt to the last-pulling operation needs of shoes of different lengths.

[0038] The following details the mechanism of the last-pulling mechanism 4, referring to... Figure 2The last-pulling mechanism 4 includes a first cylinder 41 vertically fixed inside the assembly box 2. The upper end of the piston rod of the first cylinder 41 slides through the upper side wall of the assembly box 2 and is fixed to an assembly table 42. A positioning frame 43 is bolted to the upper side wall of the assembly table 42. A second cylinder 44 is horizontally fixed on the side of the positioning frame 43 away from the workbench 1. One end of the piston rod of the second cylinder 44 slides through the positioning frame 43 and is fixed to a push block 45. The push block 45 is made of soft rubber. The soft rubber push block 45 can avoid wear on the shoe when in contact with it. A crescent-shaped groove is opened on the side of the push block 45 away from the positioning frame 43. At the same time, a movable plate 6 is provided on the upper side of the slide table 32. The movable plate 6 is slidably sleeved on the outside of the long thin cylinder 33. A limit switch 7 is fixedly installed on the side wall of the slide table 32. The trigger rod of the limit switch 7 contacts the lower side wall of the movable plate 6. The first cylinder 41, the second cylinder 44 and the electric telescopic rod 38 are all electrically connected to the limit switch 7.

[0039] The worker first places the shoe last 5 on the upper side of the movable plate 6, and completes the initial positioning by precisely inserting the upper end of the long thin tube 33 into the slot 51. At this time, the heel part wrapped on the outside of the shoe last 5 will naturally fit into the crescent-shaped groove. This groove structure serves as a visual guide reference, helping the worker to quickly calibrate the installation position of the shoe last 5 on the long thin tube 33. As the shoe last 5 is fully in place, its own weight exerts downward pressure on the movable plate 6, forcing the movable plate 6 to press down the trigger rod of the limit switch 7. The limit switch 7 first activates the electric telescopic rod 38 to drive it. The piston rod extends, linking multiple moving blocks 34 to internally support and fix the shoe last 5. Then, the first cylinder 41 is activated to push the second cylinder 44 and the push block 45 to perform a vertical upward movement. During this process, the second cylinder 44 is simultaneously activated to advance horizontally, so that the push block 45 forms a composite curve motion trajectory composed of vertical upward movement and horizontal forward movement. When the crescent-shaped groove of the push block 45 contacts the shoe surface, the friction between the push block 45 and the shoe achieves the gradual separation of the shoe body from the shoe last 5, thereby removing the shoe from the outside of the shoe last 5.

[0040] When using this device, the worker first places the shoe last 5 on the upper side of the movable plate 6. By precisely inserting the upper end of the long thin tube 33 into the slot 51, the shoe last 5 contacts the movable plate 6, and its own weight creates downward pressure on the movable plate 6, forcing the movable plate 6 to press down the trigger rod of the limit switch 7. The limit switch 7 first activates the electric telescopic rod 38 to drive the piston rod to extend, which in turn links multiple moving blocks 34 to internally support and fix the shoe last 5. Then, the limit switch 7 activates the first cylinder 41 and the second cylinder 44, through... Push block 45 removes the shoe from the outside of the shoe last 5. During this process, the worker holds the shoe and immediately moves it to the designated location after it is removed from the shoe last 5. Then, under the program control, limit switch 7 starts the first cylinder 41 and the second cylinder 44 to drive the piston rod to reset and starts the electric telescopic rod 38 to drive the piston rod to retract, releasing the inner support fixation of the shoe last 5 by the moving block 34. The worker removes the shoe last 5 from the long thin tube 33 and places it in the designated location, completing the shoe last removal operation.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A shoe last removal machine, comprising a workbench (1), wherein an assembly box (2) is fixedly disposed on one side of the workbench (1), characterized in that: The assembly box (2) is provided with a last-pulling mechanism (4) on its upper side. The workbench (1) is provided with a last-fixing mechanism (3) at a position corresponding to the last-pulling mechanism (4) on its upper side. The last-fixing mechanism (3) includes an adjustment box (31) that is horizontally fixed to the upper side wall of the workbench (1) by a bracket. A slide table (32) is slidably arranged inside the adjustment box (31). A long thin cylinder (33) is vertically fixed to the upper side wall of the slide table (32). Several movable slots (331) are arranged in a ring array on the circumferential side wall of the long thin cylinder (33). A moving block (34) is slidably arranged inside the movable slot (331). The long thin cylinder (33) has a certain number of movable slots (331) arranged in a ring array on its circumferential side wall. A moving block (34) is slidably arranged inside the movable slot (331). The part is equipped with a displacement mechanism for driving several moving blocks (34) to move away from or near the axis of the long thin tube (33) synchronously. When the moving block (34) is in the initial state, the side of the moving block (34) away from the axis of the long thin tube (33) combines with the outer circumference of the long thin tube (33) to form a complete smooth cylindrical surface. When the long thin tube (33) is inserted into the slot (51) on the shoe last (5), the displacement mechanism drives several moving blocks (34) to move away from the axis of the long thin tube (33) synchronously, so that the side of the moving block (34) away from the axis of the long thin tube (33) is in close contact with the inner wall of the slot (51), and the shoe last (5) is fixed at the top of the long thin tube (33).

2. The shoe last-removing machine according to claim 1, characterized in that: The last fixing mechanism (3) also includes an end cap (35) bolted to the upper end of the long thin cylinder (33). The upper and lower ends of the moving block (34) are both fixed with sliders (341). The end cap (35) and the bottom side inside the movable groove (331) are provided with sliding grooves corresponding to each slider (341). The sliders (341) are slidably disposed in the corresponding sliding grooves.

3. The shoe last-removing machine according to claim 1, characterized in that: The displacement mechanism includes an electric telescopic rod (38) that is vertically fixed inside the long thin cylinder (33). A movable wedge (39) is fixedly provided on the upper end of the piston rod of the electric telescopic rod (38). A fixed wedge (342) is fixed on the side of the movable block (34) near the axis of the long thin cylinder (33). The fixed wedge (342) is in contact with the movable wedge (39), and the side of the fixed wedge (342) that is in contact with the movable wedge (39) is set as an inclined surface. The side of the inclined surface near the axis of the long thin cylinder (33) is located at a high position.

4. The shoe last-removing machine according to claim 1, characterized in that: The movable block (34) has several embedded grooves (36) on the side away from the axis of the long thin cylinder (33) and on the outer circumference of the long thin cylinder (33). When the movable block (34) is in the initial state, the embedded grooves (36) at the same height combine to form a complete annular groove. A rubber ring (37) is provided inside the annular groove.

5. The shoe last-removing machine according to claim 1, characterized in that: The last-pulling mechanism (4) includes a first cylinder (41) vertically fixed inside the assembly box (2). The upper end of the piston rod of the first cylinder (41) slides through the upper side wall of the assembly box (2) and is fixed to an assembly table (42). A positioning frame (43) is bolted to the upper side wall of the assembly table (42). A second cylinder (44) is horizontally fixed on the side of the positioning frame (43) away from the workbench (1). One end of the piston rod of the second cylinder (44) slides through the positioning frame (43) and is fixed to a push block (45). A crescent-shaped groove is opened on the side of the push block (45) away from the positioning frame (43).

6. The shoe last-removing machine according to claim 1, characterized in that: A movable plate (6) is provided on the upper side of the slide table (32). The movable plate (6) is slidably sleeved on the outside of the long thin cylinder (33). A limit switch (7) is fixedly installed on the side wall of the slide table (32). The trigger rod of the limit switch (7) is in contact with the lower side wall of the movable plate (6).

Images