Universal clamping mechanism for shoe tree

Abstract

The utility model belongs to the field of shoemaking equipment, and discloses a universal shoe tree clamping mechanism which comprises a shoe tree clamping part and a shoe tree fixing part. The shoe tree clamping part comprises a transverse clamping part, the transverse clamping part comprises a first supporting platform, a pair of clamping jaws arranged on the first supporting platform in a sliding mode and a first driving piece for driving the pair of clamping jaws to move oppositely or oppositely, and the first driving piece is fixedly arranged on the first supporting platform; the output end of the first driving part is simultaneously connected with the input ends of the pair of clamping jaws; the shoe tree fixing part comprises a base; each clamping jaw is provided with a first clamping part used for clamping the base and a second clamping part used for clamping the shoe tree. According to the utility model, the problem of clamping error caused by non-synchronous movement of the two clamping jaws can be avoided, and the glue brushing precision is improved; the utility model is suitable for shoemaking or clothing manufacturing industry, and is used for clamping an object to be brushed with glue.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shoemaking equipment field, specifically a kind of general clamping mechanism of shoe tree. BACKGROUND

[0002] As shown in Figure 1 Shoe-making has a step of sticking the bottom of upper 1 to the big bottom 2, and this process is often carried out by using glue brushing machine 3, and the structure of glue brushing machine 3 is shown in Figure 2 When working, upper 1 is sleeved on shoe tree 5, shoe tree 5 is clamped on clamping mechanism 6, and then glue brushing assembly 4 of glue brushing machine 3 is used to brush glue along the bottom edge of upper 1, and after brushing glue is completed, upper 1 is taken off from shoe tree 5, and the bottom of upper 1 is stuck to big bottom 2.

[0003] Since the movement track of glue brushing assembly 4 is fixed, if the clamping position of shoe tree 5 is deviated, it will cause the error of glue brushing position, and then processing error occurs. At present, the clamping mechanism 6 applied to glue brushing machine 3 usually adopts the mode of double-cylinder or double-motor driving clamping jaw, shoe tree 5 is located between the two clamping jaws, and the two clamping jaws are relatively moved by using two cylinders or motors to drive one clamping jaw respectively, so as to clamp shoe tree 5.

[0004] However, the above-mentioned clamping mechanism 6 will have the situation of non-synchronous starting of two cylinders or motors, at this time, the stroke of two cylinders or motors will also have error, and then clamping error of shoe tree 5 in the width direction occurs, which affects the glue brushing precision. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of general clamping mechanism of shoe tree to solve the problem that the existing clamping assembly can cause clamping error of shoe tree.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of general clamping mechanism of shoe tree, including shoe tree clamping part and shoe tree fixed part;

[0008] Shoe tree clamping part includes transverse clamping part, the transverse clamping part includes first support platform, a pair of clamping jaws slidably arranged on the first support platform, and first driving member for driving a pair of clamping jaws to move oppositely or in opposite directions, and the first driving member is fixedly arranged on the first support platform;The output end of first driving member is connected with the input end of a pair of clamping jaws simultaneously;

[0009] Shoe tree fixed part includes base;

[0010] First clamping part for clamping base and second clamping part for clamping shoe tree are arranged on each clamping jaw.

[0011] As a limitation of the utility model: the first support platform is slidably provided with a driving plate, the output end of the first driving element is connected with the driving plate, the driving plate makes linear reciprocating motion, the movement direction of the driving plate is perpendicular to the movement direction of the clamping jaw; the driving plate is provided with two straight grooves in a spread-finger structure, each clamping jaw is fixedly provided with a driving column for extending into the straight groove, the driving plate moves towards the direction of approaching or moving away from the shoe tree to drive the pair of clamping jaws to move oppositely or away from each other.

[0012] As another limitation of the utility model: the shoe tree clamping part further comprises a length adjusting part, the length adjusting part comprises a second support platform and a second driving element, the second driving element is fixedly arranged on the second support platform, the output end of the second driving element is connected with the first support platform, the first support platform is slidably arranged on the second support platform, and the first support platform makes linear reciprocating motion towards the direction of approaching or moving away from the shoe tree.

[0013] As a further limitation of the utility model: one side of the second support platform towards the first support platform is fixedly provided with a strip-shaped guide rail, a sliding block is slidably arranged on the strip-shaped guide rail, and the first support platform is fixedly connected with the sliding block.

[0014] As a further limitation of the utility model: one end of the second support platform close to the shoe tree is provided with a buffer and a blocking nut, and the bottom of the first support platform is fixedly provided with a moving block for cooperating with the buffer.

[0015] As a further limitation of the utility model: the first driving element and the second driving element are both air cylinders.

[0016] As another limitation of the utility model: the first clamping part comprises a connecting block fixedly arranged on the bottom of the clamping jaw, and the connecting block is fixedly provided with an abutting column extending towards the base.

[0017] As another limitation of the utility model: the second clamping part comprises an arc-shaped clamping surface protruding towards the shoe tree and arranged on the clamping jaw, and the bending radius of the arc-shaped clamping surface is the same as the bending radius of the groove of the shoe tree.

[0018] As a further limitation of the utility model: the second clamping part further comprises a clamping working position, and the clamping working position is in any one of the following modes:

[0019] a. the clamping working position is a clamping block for clamping with the clamping groove on the shoe tree;

[0020] b. the clamping working position is a clamping groove for clamping the protruding block on the shoe tree.

[0021] As another limitation of the utility model: the shoe tree fixing part further comprises a bottom plate, the base is fixedly arranged on the bottom plate, and a supporting plate for placing the outsole is further fixedly arranged on the bottom plate, a row of blocking strips are fixedly arranged on the edge of the supporting plate, and the space surrounded by the blocking strips and the supporting plate is matched with the size and shape of the outsole.

[0022] Due to the adoption of the above technical scheme, the utility model discloses the beneficial effects obtained compared with the prior art are:

[0023] (1) the utility model discloses a shoe tree clamping part and shoe tree fixed part, and the shoe tree clamping part includes the transverse clamping part, and the transverse clamping part includes a first support platform, a pair of clamping jaws and a first drive part, and the output end of the first drive part is connected with the input end of the pair of clamping jaws simultaneously.Working, the first drive part works to make the pair of clamping jaws move simultaneously, compared with the prior art that two clamping jaws are driven by a cylinder respectively, the utility model can guarantee that the pair of clamping jaws move synchronously, and the stroke of two clamping jaws is same, so that the glue brushing precision is improved.

[0024] (2) the utility model discloses that the driving plate is slidably arranged on the first support platform, and two straight grooves in the shape of splayed structure are arranged on the driving plate, and the driving column fixed on the clamping jaw extends into the straight groove, when the driving plate moves towards the direction close to or away from the shoe tree, the pair of clamping jaws are driven to move oppositely or in the opposite direction, and the driving mode is simple in structure and low in manufacturing cost.

[0025] (3) the utility model discloses further include length adjusting part, and the output end of the second drive part is connected with the first support platform, and the first support platform is slidably arranged on the second support platform, and the second drive part can drive the first support platform to move linearly along the length direction of the shoe tree, so that the clamping jaw moves towards the direction close to or away from the shoe tree, so that the clamping jaw is retracted after the clamping of the shoe tree or the glue brushing is completed.

[0026] In conclusion, the utility model can avoid the problem of clamping error caused by the asynchronous movement of two clamping jaws, and improve the glue brushing precision;The utility model is suitable for shoemaking or clothing manufacturing industry and is used for clamping objects to be brushed with glue. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0028] Figure 1 It is the structural schematic diagram of prior art before the big bottom and the vamp are bonded;

[0029] Figure 2 It is the structural schematic diagram of prior art glue brushing machine and clamping mechanism;

[0030] Figure 3 It is the application structural schematic diagram of the utility model embodiment;

[0031] Figure 4 It is the structural schematic diagram of the first support platform, the supporting block and the guide column in the utility model embodiment;

[0032] Figure 5It is the structure schematic view of the shoe tree clamping part in the embodiment of the utility model;

[0033] Figure 6 It is the structure schematic view of the shoe tree clamping part in another view angle in the embodiment of the utility model;

[0034] Figure 7 It is the structure schematic view of the clamping jaw, shoe tree and base in the embodiment of the utility model;

[0035] Figure 8 It is the structure schematic view of the bearing plate and blocking strip in the embodiment of the utility model;

[0036] Figure 9 It is the structure schematic view of the embodiment of the utility model installed on the glue brushing machine.

[0037] In the drawing: 1 - vamp, 2 - outsole, 3 - glue brushing machine, 4 - glue brushing assembly, 5 - shoe tree, 51 - abutment groove, 52 - arc-shaped groove, 53 - clamping groove, 6 - clamping mechanism;

[0038] 7 - shoe tree clamping part, 701 - first support platform, 702 - clamping jaw, 703 - first driving part, 704 - supporting block, 705 - first sliding groove, 706 - driving plate, 707 - L-shaped plate, 708 - second sliding groove, 709 - guide column, 710 - straight groove, 711 - driving column, 712 - second support platform, 713 - second driving part, 714 - strip-shaped guide rail, 715 - sliding block, 716 - buffer, 717 - blocking nut, 718 - moving block, 719 - connecting block, 720 - abutment column, 721 - arc-shaped clamping surface, 722 - clamping block;

[0039] 8 - shoe tree fixing part, 81 - base, 82 - bottom plate, 83 - bearing plate, 84 - blocking strip. DETAILED DESCRIPTION

[0040] The preferred embodiments of the utility model are described below in combination with the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and do not constitute a limitation on the utility model.

[0041] The orientation words or position relationships such as "upper", "lower", "left", "right", "front" and "back" in the embodiments are based on the orientation relationship in the drawings of the utility model specification, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or implied of the specific orientation, specific orientation structure and operation of the device or element, and therefore cannot be understood as a limitation on the content protected by the utility model. Figure 3

[0042] The length in the embodiment refers to the distance in the front-to-back direction, and the width refers to the distance in the left-to-right direction. ​

[0043] As Figure 1 , 3 shown in FIGS. 1-9, the embodiment includes a last clamping portion 7 and a last fixing portion 8. The last fixing portion 8 is used to fix the last 5, and the upper 1 is put on the last 5 when brushing glue. The last clamping portion 7 is used to clamp the last 5, so that the glue brushing assembly can brush glue on the bottom of the upper 1.

[0044] I. The last clamping portion 7;

[0045] The last clamping portion 7 includes a transverse clamping portion for clamping the last 5.

[0046] As Figure 3 shown, the transverse clamping portion includes a first support platform 701, a pair of clamping jaws 702, and a first driving member 703.

[0047] In the embodiment, the pair of clamping jaws 702 are slidingly arranged at the front end of the first support platform 701, and the first driving member 703 is fixedly arranged on the first support platform 701. The output end of the first driving member 703 is connected to the input end of the pair of clamping jaws 702, and is used to drive the pair of clamping jaws 702 to move synchronously in opposite directions. In the embodiment, the specific means for the first driving member 703 to drive the pair of clamping jaws 702 to move synchronously is that a driving plate 706 is slidingly arranged on the first support platform 701, as Figure 3 , 4 shown, a supporting block 704 is fixedly arranged on the first support platform 701, a first sliding groove 705 is formed in the supporting block 704, and the driving plate 706 is slidingly clamped in the first sliding groove 705. The output end of the first driving member 703 is connected to the driving plate 706, so that the driving plate 706 moves linearly in the front and back directions. In other words, the movement direction of the driving plate 706 is perpendicular to the movement direction of the clamping jaws 702. In the embodiment, the two clamping jaws 702 move in the width direction (i.e., the left and right directions). In the embodiment, the first driving member 703 is a existing air cylinder, and of course, any other structure capable of providing linear driving force in the prior art can be used, such as an electric cylinder.

[0048] The pair of clamping jaws 702 are arranged in the following manner: as Figure 4 shown, an L-shaped plate 707 is arranged at the front end of the first support platform 701, the L-shaped plate 707 is located at the front end of the supporting block 704, a second sliding groove 708 is formed between the L-shaped plate 707 and the supporting block 704, two guide columns 709 are arranged in parallel in the second sliding groove 708, the sum of the lengths of the two guide columns 709 is equal to the length of the second sliding groove 708, so that the two guide columns 709 can be clamped in the second sliding groove 708. One end of one of the guide columns 709 protruding from the second sliding groove 708 is fixedly connected to one of the clamping jaws 702, and one end of the other guide column 709 protruding from the second sliding groove 708 is fixedly connected to the other clamping jaw 702.

[0049] Under the action of the first driving member 703, the driving plate 706 drives a pair of grippers 702 to move relative to or away from each other, specifically as follows: Figure 3 As shown, the drive board 706 has two straight slots 710 arranged in a figure-eight structure, such as... Figure 4 As shown, each guide post 709, which is fixedly connected to the gripper 702, is equipped with a drive post 711 for extending into the straight groove 710. When the drive plate 706 moves toward the direction closer to the shoe last 5 (i.e. forward), the distance between the two straight grooves 710 in the left and right directions becomes closer and closer, causing the two drive posts 711 to move relative to each other, that is, the pair of grippers 702 to move relative to each other, thus achieving clamping. Conversely, when the drive plate 706 moves away from the shoe last 5 (i.e. backward), the distance between the two straight grooves 710 in the left and right directions becomes farther and farther, causing the two drive posts 711 to move in opposite directions, that is, the pair of grippers 702 to move in opposite directions, at which point the shoe last 5 is released.

[0050] In this embodiment, the synchronous relative or opposite movement of the two grippers 702 is achieved using a structure such as the first driving component 703, the driving plate 706, the straight groove 710, and the driving column 711. The structure is simple and the manufacturing cost is low. Of course, another structure can be used, for example, using a motor and a lead screw. The lead screw passes through the two grippers 702 in the left and right directions, and the lead screw is provided with two sections of threads with different directions of rotation. The two grippers 702 are located at positions with different directions of rotation. The motor drives the lead screw to rotate. At this time, due to the different directions of rotation, the two grippers 702 will move relative or opposite directions.

[0051] The shoe last clamping part 7 also includes a length adjustment part, which is used to realize the movement of the gripper 702 in the front and rear directions.

[0052] like Figure 3As shown, the length adjusting part comprises a second support platform 712 and a second driving member 713, the second driving member 713 is fixed on the second support platform 712, the output end of the second driving member 713 is connected with the first support platform 701, and the first support platform 701 is slidingly arranged on the second support platform 712. In the embodiment, the second driving member 713 is a cylinder, and of course, any other structure capable of providing linear driving force in the prior art can be adopted, such as an electric cylinder. The first support platform 701 is slidingly arranged in the following manner: a strip-shaped guide rail 714 is fixed on the side of the second support platform 712 facing the first support platform 701, the strip-shaped guide rail 714 extends in the front-rear direction, and in the embodiment, two strip-shaped guide rails 714 are arranged on the second support platform 712 in a spaced manner, and a sliding block 715 is slidingly arranged on the strip-shaped guide rail 714, and in the embodiment, two sliding blocks 715 are arranged on each strip-shaped guide rail 714, and the sliding blocks 715 are located below the first support platform 701 and are fixedly connected with the first support platform 701. The structure of the strip-shaped guide rail 714 and the sliding block 715 is known in the art, and will not be described in detail here. In operation, the second driving member 713 drives the first support platform 701 to move forward and backward, so as to make linear reciprocating motion towards or away from the shoe tree 5.

[0053] In order to improve the embodiment, as shown in Figure 5 , 6 As shown, the second support platform 712 is provided with a buffer 716 and a blocking nut 717 near one end of the clamping jaw 702, and correspondingly, the bottom of the first support platform 701 is fixedly provided with a moving block 718 for cooperating with the buffer 716. The buffer 716 can play a buffering role, so that the moving block 718 can reach a minimum speed when it touches the blocking nut 717, and the blocking nut 717 plays a limiting role, so that the moving block 718 will stop after contacting the blocking nut 717. The buffer 716 and the blocking nut 717 are both known in the art, and their principles will not be described in detail.

[0054] II. The shoe tree fixing part 8;

[0055] As shown in Figure 7 The shoe tree fixing part 8 comprises a base 81. In the embodiment, the base 81 has an I-shaped structure, and the shoe tree 5 is fixedly arranged on the top of the base 81. The fixing manner between the shoe tree 5 and the base 81 is known in the art, and will not be described in detail in the embodiment.

[0056] In order to be suitable for pipeline operation, the shoe tree fixing part 8 further comprises a bottom plate 82, and the base 81 is fixedly arranged on the bottom plate 82. In application, the bottom plate 82 is placed on a chain plate, and the bottom plate 82 and the shoe tree 5 are transported together with the chain plate. Further, as shown in Figure 8As shown, the bottom plate 82 is also fixed with a supporting plate 83 for placing the outsole 2, and a row of blocking strips 84 is fixed on the edge of the supporting plate 83, and the space surrounded by the blocking strips 84 and the supporting plate 83 is matched with the size and shape of the outsole 2. When brushing glue, the outsole 2 is placed on the supporting plate 83, and after the bottom of the upper 1 is brushed with glue, it is taken off from the last 5 and taken to the supporting plate 83 to be bonded with the outsole 2.

[0057] III. The first clamping part and the second clamping part;

[0058] In order to realize the clamping of the last 5, the first clamping part for clamping the base 81 and the second clamping part for clamping the last 5 are arranged on each of the clamping jaws 702 in the embodiment.

[0059] As shown in Figure 5 , 7 , the first clamping part includes a connecting block 719 fixed on the bottom of the clamping jaw 702, and an abutting column 720 extending towards the base 81 is fixed on the connecting block 719, that is, the axial direction of the abutting column 720 extends along the left and right directions. In the embodiment, an abutting groove 51 is arranged on the base 81 corresponding to the position of the abutting column 720, and when the two clamping jaws 702 move relatively to extend the abutting column 720 into the abutting groove 51, the clamping jaw 702 clamps the base 81. Of course, the abutting groove 51 can also not be arranged on the base 81, and the abutting column 720 is directly used to abut against the side wall of the base 81 from the left and right sides to clamp the base 81.

[0060] Since the conventional last 5 is provided with two last grooves (i.e. arc-shaped grooves 52) on the opposite two sides, as shown in Figure 7 , Figure 4 , 5 , the second clamping part in the embodiment includes an arc-shaped clamping surface 721 arranged on the clamping jaw 702 and protruding towards the last 5, and in the embodiment, there are two arc-shaped clamping surfaces 721, one arranged on the right end of the left clamping jaw 702 and the other arranged on the left end of the right clamping jaw 702. The bending radius of the arc-shaped clamping surface 721 is the same as that of the arc-shaped groove 52. When the two clamping jaws 702 move relatively, the arc-shaped clamping surface 721 will be inserted into the arc-shaped groove 52 to clamp the last 5.

[0061] In order to perfect the embodiment, the second clamping part further includes a clamping working position, and most of the last 5 on the market is provided with a clamping groove 53, as shown in Figure 7 , in order to further ensure the clamping, the clamping working position in the embodiment is a clamping block 722 clamped with the clamping groove 53, as shown in Figure 5The shape of the outer contour of the engaging block 722 is the same as that of the engaging groove 53, and when the clamping jaw 702 moves, the engaging block 722 is engaged into the engaging groove 53, thereby further ensuring the clamping effect. Similarly, if the position of the engaging groove 53 on the shoe tree 5 is a protrusion, then the engaging working position is set as an engaging groove for engaging the protrusion.

[0062] When the present embodiment is used, as shown in Figure 3 , When the present embodiment is used, as shown in 9 the present embodiment is fixed on the glue brushing machine 3, when the bottom plate 82, the base 81 and the shoe tree 5 transported on the chain plate are transported to the glue brushing machine 3, the first supporting platform 701 is driven to move forward by the second driving member 713, so that the shoe tree 5 is located between the two clamping jaws 702. Then the driving plate 706 is driven to move forward by the first driving member 703, and under the action of the eight-shaped straight groove 710, the two clamping jaws 702 move relatively, at this time, the arc-shaped clamping surface 721 is inserted into the arc-shaped groove 52, the engaging block 722 is engaged into the engaging groove 53, and the abutting column 720 is inserted into the abutting groove 51, thereby realizing the clamping of the shoe tree 5. After the glue brushing is completed, the upper 1 is removed and placed on the supporting plate 83 to be bonded with the outsole 2. Then the driving plate 706 is operated to move backward, the clamping jaw 702 is loosened from the shoe tree 5, and then the first supporting platform 701 is operated to move backward to retreat.

[0063] It should be noted that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments, or equivalently replace some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A universal holding mechanism for shoe lasts, characterized by The shoe tree clamping part and the shoe tree fixing part are included. The shoe tree clamping part includes a transverse clamping part, the transverse clamping part includes a first support platform, a pair of clamping jaws slidingly arranged on the first support platform, and a first driving member driving the pair of clamping jaws to move towards or away from each other, the first driving member is fixedly arranged on the first support platform; the output end of the first driving member is connected with the input end of the pair of clamping jaws; The shoe tree fixing part includes a base; Each clamping jaw is provided with a first clamping part for clamping the base and a second clamping part for clamping the shoe tree.

2. A universal shoe last holding mechanism according to claim 1, wherein A driving plate is slidingly arranged on the first support platform, the output end of the first driving member is connected with the driving plate, the driving plate moves linearly, the movement direction of the driving plate is perpendicular to the movement direction of the clamping jaws; the driving plate is provided with two straight grooves in a spreader structure, each clamping jaw is fixedly provided with a driving column for extending into the straight groove, the driving plate moves towards or away from the shoe tree to drive the pair of clamping jaws to move towards or away from each other.

3. A universal holding mechanism for shoe lasts according to claim 1 or 2, characterized in that The shoe tree clamping part further includes a length adjusting part, the length adjusting part includes a second support platform and a second driving member, the second driving member is fixedly arranged on the second support platform, the output end of the second driving member is connected with the first support platform, the first support platform is slidingly arranged on the second support platform, and the first support platform moves linearly towards or away from the shoe tree.

4. A universal shoe last holding mechanism according to claim 3, wherein A strip-shaped guide rail is fixedly arranged on one side of the second support platform facing the first support platform, a sliding block is slidingly arranged on the strip-shaped guide rail, and the first support platform is fixedly connected with the sliding block.

5. A universal shoe last holding mechanism according to claim 4, wherein A bumper and a blocking nut are arranged on one end of the second support platform close to the shoe tree, and a moving block is fixedly arranged on the bottom of the first support platform and cooperates with the bumper.

6. A universal shoe last holding mechanism according to claim 5, wherein The first driving member and the second driving member are both air cylinders.

7. A universal clamping mechanism for shoe lasts according to any one of claims 1-2, 4-6, characterized in that, The first clamping part includes a connecting block fixedly arranged on the bottom of the clamping jaw, and an abutting column extending towards the base is fixedly arranged on the connecting block.

8. A universal shoe last holding mechanism according to any one of claims 1-2, 4-6, characterized in that, The second clamping part includes an arc-shaped clamping surface protruding towards the shoe tree and arranged on the clamping jaw, and the bending curvature of the arc-shaped clamping surface is the same as the bending curvature of the groove of the shoe tree.

9. A universal shoe last holding mechanism according to claim 8, wherein The second clamping part further includes a clamping working position, which is any of the following: a. The clamping working position is a clamping block for clamping with a clamping groove on the shoe tree; b. The clamping working position is a clamping groove for clamping a protruding block on the shoe tree.

10. A universal clamping mechanism for shoe lasts according to any one of claims 1-2, 4-6, 9, characterized in that, The shoe tree fixing part further includes a bottom plate, the base is fixedly arranged on the bottom plate, and a supporting plate for placing the outsole is fixedly arranged on the bottom plate, a ring of blocking strips is fixedly arranged on the edge of the supporting plate, and the space surrounded by the blocking strips and the supporting plate is matched with the size and shape of the outsole.

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