A new material composite hooking heart stiffness testing machine for leather shoes

Abstract

This invention discloses a new material composite shank stiffness testing machine for leather shoes, relating to the field of new material strength testing components. It solves the problems of existing leather shoe shank stiffness testing machines, such as difficulty in adapting to multi-curved composite shanks, poor clamping fit leading to slippage, and cumbersome manual addition and removal of weights, which is prone to impact errors. The machine includes a base, mounting frame, clamping mechanism, and testing mechanism. The clamping mechanism includes clamping plates, and the testing mechanism includes a force-applying blade, weight blocks, control components, and adjustment components. This invention clamps the tail end of the composite shank using the clamping mechanism, and through the lifting and lowering of multiple sets of clamping plates, achieves a more secure and stable clamping of the tail end. The testing mechanism adjusts the position of the force-applying blade and weight blocks to complete the stiffness test of the composite shank at a set position. Simultaneously, during the testing process, the control components can control four weight blocks to be suspended and tested sequentially from top to bottom, reducing manual intervention and improving testing efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of new material strength testing components, specifically a new material composite shank stiffness testing machine for leather shoes. Background Technology

[0002] The shank is the core load-bearing support component of leather shoes, located at the midfoot window. It plays a crucial role in maintaining the sole's curvature, supporting the foot under pressure, and preventing the shoe from deforming and collapsing. Its bending stiffness directly determines the shoe's stability, support, and lifespan, making it a core indicator of footwear quality testing. With the iterative upgrades in new shoe material technologies, traditional steel shanks have been gradually replaced due to their heavy weight, poor toughness, susceptibility to rust, and insufficient comfort. New composite shanks, such as those made of glass fiber, carbon fiber, modified polymers, and fiber-reinforced resins, have become the mainstream configuration for high-end leather shoes.

[0003] The new material composite hook has advantages such as lightweight, high toughness, corrosion resistance, adjustable mechanical properties, and ergonomic fit. Compared with the traditional standard steel hook, the curvature, tilt angle, contour curvature, and thickness of the tail clamping section vary greatly. The proportion of new material hooks with irregular structures and non-standard curved surface configurations continues to increase, which puts forward more stringent requirements on the adaptive adaptability, clamping stability, and graded force measurement accuracy of stiffness testing equipment.

[0004] Existing traditional shank stiffness testing machines have outdated structural designs, mostly employing fixed, integral rigid clamping plates with fixed planes as the clamping surfaces. This makes them unable to adapt to the diverse curvatures, tilt angles, and irregular contours of the tails of new composite material shanks. When testing composite shanks with different configurations, they are prone to clamping defects such as localized point contact, large-area suspension, and unilateral force application, failing to achieve complete surface-to-surface clamping. Furthermore, national standards require four graded stiffness tests, increasing progressively from 2N to 8N. During testing, operators must repeatedly manually remove and add weights, requiring multiple weight adjustments for each sample test. This cumbersome and lengthy process, with significant human intervention introducing errors, makes it difficult to meet the high-efficiency quality inspection needs of mass-produced new material composite shanks, severely hindering mass production testing and performance development iterations of new footwear materials. Summary of the Invention

[0005] The purpose of this invention is to provide a new material composite shank stiffness testing machine for leather shoes that facilitates the improvement of the clamping and fixing efficiency and testing efficiency of the new material composite shank, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a new material composite shank stiffness testing machine for leather shoes, comprising a base, a clamping mechanism, and a testing mechanism. The base has an upper mounting frame. The clamping mechanism includes two adjusting frames, within which multiple sets of clamping plates are slidably connected in the vertical direction. The clamping mechanism can clamp the tail end of the composite shank, and through the lifting and lowering of the multiple sets of clamping plates, the clamping of the tail end of the composite shank becomes more secure and stable. The testing mechanism includes a force-applying blade and four weight blocks mounted on the mounting frame. The mounting frame has a control component that controls the hanging state of the weight blocks. The base has an adjustment component for adjusting the position of the mounting frame. The testing mechanism can complete the stiffness test of the composite shank at a set position by adjusting the positions of the force-applying blade and the weight blocks. Simultaneously, during the testing process, the control component can control the four weight blocks to be suspended and tested sequentially from top to bottom, improving testing efficiency and facilitating the improvement of the clamping and fixing efficiency and testing efficiency of the new material composite shank.

[0007] Preferably, the testing mechanism further includes a fixed cylinder fixedly installed on the mounting frame, a sliding rod fixedly connected to the upper side of the force-applying blade, the sliding rod passing through the fixed cylinder, a testing instrument fixedly connected to the mounting frame, the upper end of the sliding rod connected to the measuring end of the testing instrument, a connecting frame fixedly connected to the force-applying blade, and a hook for suspending the weight block fixedly connected to the bottom of the connecting frame, which facilitates the adjustment of the position of the force-applying blade and the weight block, and completes the stiffness test of the composite hook core setting position. At the same time, during the testing process, the four weight blocks can be controlled by the control component to be suspended and tested sequentially from top to bottom, improving the testing efficiency.

[0008] Preferably, the control component includes a fixing ring fixedly installed on the upper side of the weight block, a mounting groove is provided at the bottom end of the weight block, a hanging rod is fixedly connected in the mounting groove, the fixing ring on the lower weight block is suspended on the hanging rod of the upper weight block, the uppermost fixing ring can be suspended on the hook, and the mounting frame is provided with a support for controlling the sequential suspension of the weight blocks, so as to facilitate the control of the suspension state of the weight blocks.

[0009] Preferably, the support includes multiple sets of support rods installed at the bottom of the weight blocks, with two support rods at the bottom of each weight block. The mounting frame has a sliding groove, and the support rods are slidably connected to the inner wall of the sliding groove in a horizontal direction. The side of the support rod closest to the weight block has a first slope. The mounting frame has a drive component for controlling the opening and closing of the support rods to both sides, which facilitates the sequential hanging of the weight blocks.

[0010] Preferably, the driving component includes a drive motor fixedly mounted on the mounting frame, a push block fixedly connected to one end of the support rod, a drive block slidably connected to the side of the mounting frame in the vertical direction, a second slope surface on both sides of the bottom end of the drive block that can slide against the push block, a first lead screw fixedly connected to the output end of the drive motor coaxially, the first lead screw passing through the drive block and threadedly connected to the drive block, and a first elastic element fixedly connected to the mounting frame on the side of the push block away from the drive block, so as to facilitate control of the opening and closing state of the support rod to both sides.

[0011] Preferably, the adjusting component includes a lifting platform fixedly installed on the base, a lifting frame fixedly connected to the lifting end of the lifting platform, a mounting frame slidably connected to the inner wall of the lifting frame in a horizontal direction, a second lead screw for driving the mounting frame to perform horizontal sliding adjustment is provided in the lifting frame, a guide groove is provided on the fixed cylinder, a baffle is slidably connected in the guide groove, and a scale groove is provided on the side of the guide groove to facilitate adjustment of the position of the mounting frame.

[0012] Preferably, the clamping mechanism further includes a mounting rod fixedly installed on the base. A guide frame is fixedly connected to the upper end of the mounting rod, and a fixing block is fixedly connected to the middle of the guide frame. The adjusting frame is slidably connected to the inner wall of the guide frame in the vertical direction. The two adjusting frames are respectively located on the upper and lower sides of the fixing block. The adjusting frame is provided with an opening and closing component for adjusting the clamping piece to open and close. The adjusting frame is provided with a limiting component for limiting and fixing the position of the clamping piece, which facilitates clamping the tail end of the composite hook core. Through the lifting and closing of multiple sets of clamping pieces, the clamping of the tail end of the composite hook core is made more close and stable.

[0013] Preferably, the opening and closing component includes a first rotating rod rotatably connected to the fixed block. The first rotating rod has first threaded grooves with opposite thread directions on both its upper and lower sides. The first rotating rod passes through the adjusting frame. The two adjusting frames are respectively threaded to the upper and lower first threaded grooves. A second elastic element is fixedly connected to the clamping plate and fixedly connected to the adjusting frame, so as to facilitate the adjustment of the clamping plate for opening and closing clamping.

[0014] Preferably, the limiting member includes friction plates fixedly installed on both sides of the clamping piece, a second rotating rod is rotatably connected to the adjusting frame, the two ends of the second rotating rod are provided with second threaded grooves with opposite thread directions, two limiting plates are slidably connected to the adjusting frame, the second rotating rod passes through the two limiting plates, and the two limiting plates are respectively threadedly connected to the second threaded grooves on both sides, so as to facilitate limiting and fixing the position of the clamping piece.

[0015] Preferably, multiple sets of rollers are uniformly rotatably connected inside the fixed cylinder, and the outer wall of the slide rod is rolled in a vertical direction with the outer wall of the rollers, which helps to reduce the frictional resistance during the lifting and lowering of the slide rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a new material composite shank stiffness testing machine for leather shoes, which solves the problems of existing leather shoe shank stiffness testing machines, such as difficulty in adapting to multi-curved composite material shanks, poor clamping fit and easy slippage, and cumbersome manual addition and removal of weights piece by piece, which is prone to impact errors. The new machine uses a clamping mechanism to clamp the tail end of the composite shank, and the lifting and fitting of multiple sets of clamping plates makes the clamping of the tail end of the composite shank more fitted and stable. The detection mechanism adjusts the position of the force-applying blade and the weight blocks to complete the stiffness test of the composite shank at the set position. At the same time, during the test, the control components can control the four weight blocks to be suspended and tested sequentially from top to bottom, reducing manual intervention and improving testing efficiency and accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the detection mechanism of the present invention; Figure 3 This is a partial structural diagram of the clamping mechanism of the present invention; Figure 4 for Figure 3 Enlarged view of region A in the middle; Figure 5 for Figure 3 Enlarged view of region B in the middle; Figure 6 This is a partial structural cross-sectional view of the detection mechanism of the present invention; Figure 7 for Figure 6 Enlarged view of region C; Figure 8 for Figure 6 Enlarged view of region D in the middle.

[0018] In the diagram: 1-Base; 2-Mounting bracket; 3-Adjusting frame; 4-Clamping plate; 5-Force-applying blade; 6-Weight block; 7-Fixing cylinder; 8-Sliding rod; 9-Testing instrument; 10-Connecting frame; 11-Hook; 12-Fixing ring; 13-Mounting groove; 14-Hanging rod; 15-Support rod; 16-Sliding groove; 17-First slope; 18-Drive motor; 19-Push block; 20-Drive block; 21-Second slope; 22-First screw 23-Lifting platform; 24-Lifting frame; 25-Second lead screw; 26-Guide groove; 27-Baffle; 28-Scale groove; 29-Mounting rod; 30-Guide frame; 31-Fixing block; 32-First rotating rod; 33-First threaded groove; 34-Second elastic element; 35-Friction plate; 36-Second rotating rod; 37-Second threaded groove; 38-Limiting plate; 39-Roller; 40-Composite hook; 41-First elastic element. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8 This invention provides a technical solution: a new material composite shank stiffness testing machine for leather shoes, including a base 1, a clamping mechanism, and a testing mechanism. The base 1 has a mounting frame 2 on its upper side. The clamping mechanism includes two adjusting frames 3, with multiple sets of clamping plates 4 slidably connected vertically within the adjusting frames 3. The clamping mechanism can clamp the tail end of the composite shank 40, and through the lifting and lowering of the multiple sets of clamping plates 4, the clamping of the tail end of the composite shank 40 becomes more secure and stable. The testing mechanism includes a force-applying blade 5 and four weight blocks 6 mounted on the mounting frame 2, each weight block 6 being 2N. The mounting frame 2 has a control component that can control the hanging state of the weight blocks 6, and the base 1 has an adjustment component for adjusting the position of the mounting frame 2. The testing mechanism can complete the stiffness test of the composite shank 40 at a set position by adjusting the positions of the force-applying blade 5 and the weight blocks 6. Simultaneously, during the testing process, the control component can control the four weight blocks 6 to be suspended and tested sequentially from top to bottom, improving testing efficiency.

[0021] Please see Figures 3-8The detection mechanism shown in the figure also includes a fixed cylinder 7 fixedly installed on the mounting frame 2, a sliding rod 8 fixedly connected to the upper side of the force-applying knife 5, the sliding rod 8 passing through the fixed cylinder 7, a tester 9 fixedly connected to the mounting frame 2, the upper end of the sliding rod 8 being connected to the measuring end of the tester 9, a connecting frame 10 fixedly connected to the force-applying knife 5, a hook 11 for suspending the weight block 6 fixedly connected to the bottom of the connecting frame 10, and a control component including a fixed ring 12 fixedly installed on the upper side of the weight block 6, an installation groove 13 opened at the bottom of the weight block 6, a hanging rod 14 fixedly connected in the installation groove 13, the fixed ring 12 on the lower weight block 6 being suspended on the hanging rod 14 of the upper weight block 6, and the uppermost fixed ring 12 being able to be suspended on the hook 11. The mounting frame 2 is provided with a support component for controlling the weight blocks 6 to be suspended sequentially.

[0022] Please see Figures 3-8 The support components shown in the figure include multiple sets of support rods 15 installed at the bottom of the weight blocks 6. Each weight block 6 has two support rods 15 at its bottom. The mounting frame 2 has a sliding groove 16, and the support rods 15 are slidably connected to the inner wall of the sliding groove 16 in the horizontal direction. The side of the support rod 15 near the weight block 6 has a first slope 17. The mounting frame 2 is equipped with a drive component for controlling the opening and closing state of the support rods 15 to both sides. The drive component includes a drive motor 18 fixedly installed on the mounting frame 2. The preferred model of the drive motor 18 is L. The D60 micro motor has a push block 19 fixedly connected to one end of the support rod 15. The side of the mounting bracket 2 is slidably connected to the drive block 20 in the vertical direction. The bottom end of the drive block 20 is provided with a second slope 21 that can slide against the push block 19. The output end of the drive motor 18 is coaxially fixedly connected to the first lead screw 22. The first lead screw 22 passes through the drive block 20 and is threadedly connected to the drive block 20. The side of the push block 19 away from the drive block 20 is fixedly connected to the first elastic element 41 that is fixedly connected to the mounting bracket 2.

[0023] Please see Figures 1-5 The adjusting components shown in the figure include a lifting platform 23 fixedly installed on the base 1. The lifting end of the lifting platform 23 is fixedly connected to a lifting frame 24. The mounting frame 2 is slidably connected to the inner wall of the lifting frame 24 in the horizontal direction. The lifting frame 24 is provided with a second lead screw 25 for driving the mounting frame 2 to make horizontal sliding adjustment. A guide groove 26 is provided on the fixed cylinder 7. A baffle 27 is slidably connected in the guide groove 26. A scale groove 28 is provided on the side of the guide groove 26. Multiple sets of rollers 39 are evenly rotated and connected in the fixed cylinder 7. The outer wall of the slide rod 8 is slidably connected to the outer wall of the rollers 39 in the vertical direction.

[0024] Please see Figures 2-8The clamping mechanism shown in the figure also includes a mounting rod 29 fixedly installed on the base 1. A guide frame 30 is fixedly connected to the upper end of the mounting rod 29, and a fixing block 31 is fixedly connected to the middle of the guide frame 30. The adjusting frame 3 and the inner wall of the guide frame 30 are slidably connected in the vertical direction. The two adjusting frames 3 are located on the upper and lower sides of the fixing block 31, respectively. The adjusting frame 3 is provided with an opening and closing component for adjusting the clamping piece 4 to open and close. The adjusting frame 3 is also provided with a limiting component for limiting and fixing the position of the clamping piece 4. The opening and closing component includes a first rotating rod 32 rotatably connected to the fixing block 31. The upper and lower sides of the first rotating rod 32 are respectively provided with first threaded grooves 33 with opposite thread directions. 2. The two adjustment frames 3 are threadedly connected to the upper and lower first threaded grooves 33 respectively. The clamping plate 4 is fixedly connected to the second elastic element 34 which is fixedly connected to the adjustment frame 3. The first elastic element 41 and the second elastic element 34 can be replaced by existing elastic structures such as springs. The limiting element includes friction plates 35 fixedly installed on the sides of both ends of the clamping plate 4. The adjustment frame 3 is rotatably connected to the second rotating rod 36. The two ends of the second rotating rod 36 are provided with second threaded grooves 37 with opposite thread directions. The adjustment frame 3 is slidably connected to the two limiting plates 38. The second rotating rod 36 passes through the two limiting plates 38. The two limiting plates 38 are threadedly connected to the second threaded grooves 37 on both sides respectively.

[0025] Working principle: The tail end of the composite hook 40 is placed between the upper and lower adjusting frames 3, so that the tail end of the composite hook 40 abuts against the side of the fixing block 31. Rotating the first rotating rod 32 causes the upper and lower adjusting frames 3 to move synchronously towards the center through the first threaded groove 33, so that the ends of the multiple sets of clamping pieces 4 abut against and fit against the surface of the composite hook 40. During the contact process, the second elastic element 34 provides elastic thrust, so that the clamping pieces 4 maintain a strong clamping force. The design of multiple sets of clamping pieces 4 allows the composite hook to fit different curved surfaces. The core 40 is clamped. Once clamped to the desired state, the second rotating rod 36 is rotated, causing the limiting plates 38 on both sides to simultaneously close towards the middle, squeezing the two sides of the clamping plate 4 in the middle. The friction plates 35 on the sides of the clamping plate 4 adhere to each other and squeeze, increasing the friction force, thereby completing the limiting. After that, the clamping plate 4 can no longer move vertically. Through the clamping and limiting of the upper and lower sets of clamping plates 4, the tight and stable clamping operation of the tail end surface of the composite hook core 40 with different curved surfaces is completed, avoiding damage to the structure of the composite hook core 40.

[0026] The second lead screw 25 drives the mounting bracket 2 inside the lifting frame 24 to slide horizontally. Depending on the parameters of the composite hook 40 to be tested, the position of the baffle 27 is adjusted so that the distance between the baffle 27 and the force-applying knife 5 is exactly the distance between the force-applying knife 5 and the top of the composite hook 40. The position of the mounting bracket 2 is adjusted so that the top of the composite hook 40 is exactly in contact with the side of the baffle 27. At this time, the horizontal position of the force-applying knife 5 is adjusted. Then, the lifting platform 23 is controlled to drive the lifting frame 24 to rise and fall so that the height of the force-applying knife 5 is exactly in contact with the upper surface of the composite hook 40. At this time, multiple sets of support rods 15 are respectively at the bottom of the weight block 6, and the weight block 6 is slightly lifted. At this time, the value of the tester 9 is the initial value.

[0027] When testing is required, the drive motor 18 drives the first lead screw 22 to rotate slowly, thereby driving the drive block 20 to move slowly downward. The second slope 21 at the bottom of the drive block 20 will gradually push the push block 19 to slide open along the sliding groove 16 to both sides, thereby causing the support rod 15 to slide and release its support on the weight block 6. When the uppermost weight block 6 is released from the support of the support rod 15, the uppermost fixing ring 12 is completely suspended on the hook 11, applying a downward pulling force of 2N to the force-applying knife 5. At this time, the tester 9 measures the composite hook core 40. The deformation value is obtained, and then as the drive block 20 continues to move downward, the weight block 6 below is gradually released from its support state. The test data under the applied force of 4N, 6N and 8N can be obtained in sequence. After the test is completed, the drive motor 18 drives the first lead screw 22 to rotate in the opposite direction. Under the push of the first elastic element 41, the push block 19 is brought together in the middle. The weight block 6 is scooped up onto the support rod 15 through the first slope 17, thus completing the support of the weight block 6. The first elastic element 41 can also be omitted, and the support rods 15 on both sides can be brought together manually.

[0028] After the test is completed, rotate the first rotating rod 32 and the second rotating rod 36 in the opposite direction to release the limit on the clamping piece 4. At the same time, the clamping pieces 4 on the upper and lower sides slide open in the opposite direction to release the clamp on the composite hook 40. If the same batch of composite hooks 40 is being tested, the second rotating rod 36 can be left unrotated to keep the clamping piece 4 in the limited state. This can reduce subsequent operation steps and automatically clamp composite hooks 40 with the same curvature. The size of the mounting groove 13 can accommodate the fixing ring 12 to float up and down inside it, so that when the upper weight block 6 is lowered and suspended, the upper weight block 6 will not make vertical contact with the lower weight block 6, thus avoiding affecting the accuracy of the test.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new material composite shank stiffness testing machine for leather shoes, characterized in that, include: Base (1), and mounting bracket (2) is provided on the upper side of the base (1); Also includes: The clamping mechanism includes two adjusting frames (3), and multiple sets of clamping plates (4) are slidably connected in the adjusting frames (3) along the vertical direction. The testing mechanism includes a force-applying knife (5) and four weight blocks (6) mounted on the mounting frame (2). The mounting frame (2) is provided with a control component that can control the hanging state of the weight blocks (6). The base (1) is provided with an adjustment component for adjusting the position state of the mounting frame (2).

2. The new material composite shank stiffness testing machine for leather shoes according to claim 1, characterized in that: The testing mechanism also includes a fixed cylinder (7) fixedly installed on the mounting frame (2), a slide rod (8) fixedly connected to the upper side of the force-applying knife (5), the slide rod (8) passing through the fixed cylinder (7), a tester (9) fixedly connected to the mounting frame (2), the upper end of the slide rod (8) being connected to the measuring end of the tester (9), a connecting frame (10) fixedly connected to the force-applying knife (5), and a hook (11) for suspending the weight block (6) fixedly connected to the bottom of the connecting frame (10).

3. The composite shank stiffness testing machine for new materials used in leather shoes according to claim 2, characterized in that: The control component includes a fixing ring (12) fixedly installed on the upper side of the weight block (6). The bottom end of the weight block (6) is provided with a mounting groove (13). A hanging rod (14) is fixedly connected in the mounting groove (13). The fixing ring (12) on the lower weight block (6) is suspended on the hanging rod (14) of the upper weight block (6). The uppermost fixing ring (12) can be suspended on the hook (11). The mounting frame (2) is provided with a support component for controlling the weight blocks (6) to be suspended sequentially.

4. The new material composite shank stiffness testing machine for leather shoes according to claim 3, characterized in that: The support includes multiple sets of support rods (15) installed at the bottom of the weight block (6). Each weight block (6) has two support rods (15) at its bottom. The mounting frame (2) has a sliding groove (16). The support rods (15) are slidably connected to the inner wall of the sliding groove (16) in the horizontal direction. The support rods (15) have a first slope (17) on the side near the weight block (6). The mounting frame (2) has a drive for controlling the opening and closing state of the support rods (15) to both sides.

5. The new material composite shank stiffness testing machine for leather shoes according to claim 4, characterized in that: The driving component includes a drive motor (18) fixedly mounted on the mounting frame (2), a push block (19) fixedly connected to one end of the support rod (15), a drive block (20) slidably connected to the side of the mounting frame (2) in the vertical direction, a second slope (21) is provided on both sides of the bottom end of the drive block (20) to slide against the push block (19), a first lead screw (22) is fixedly connected to the output end of the drive motor (18) coaxially, the first lead screw (22) passes through the drive block (20) and is threadedly connected to the drive block (20), and a first elastic element (41) fixedly connected to the mounting frame (2) is fixedly connected to the side of the push block (19) away from the drive block (20).

6. The new material composite shank stiffness testing machine for leather shoes according to claim 2, characterized in that: The adjusting component includes a lifting platform (23) fixedly installed on the base (1). The lifting end of the lifting platform (23) is fixedly connected to a lifting frame (24). The mounting frame (2) is slidably connected to the inner wall of the lifting frame (24) in the horizontal direction. The lifting frame (24) is provided with a second lead screw (25) for driving the mounting frame (2) to perform horizontal sliding adjustment. The fixed cylinder (7) is provided with a guide groove (26). A baffle (27) is slidably connected in the guide groove (26). A scale groove (28) is provided on the side of the guide groove (26).

7. The new material composite shank stiffness testing machine for leather shoes according to claim 1, characterized in that: The clamping mechanism also includes a mounting rod (29) fixedly installed on the base (1). A guide frame (30) is fixedly connected to the upper end of the mounting rod (29). A fixing block (31) is fixedly connected to the middle of the guide frame (30). The adjusting frame (3) and the inner wall of the guide frame (30) are slidably connected in the vertical direction. The two adjusting frames (3) are located on the upper and lower sides of the fixing block (31) respectively. The adjusting frame (3) is provided with an opening and closing member for adjusting the clamping piece (4) to open and close. The adjusting frame (3) is provided with a limiting member for limiting and fixing the position of the clamping piece (4).

8. The new material composite shank stiffness testing machine for leather shoes according to claim 7, characterized in that: The opening and closing component includes a first rotating rod (32) rotatably connected to the fixed block (31). The first rotating rod (32) has first threaded grooves (33) with opposite thread directions on both the upper and lower sides. The first rotating rod (32) passes through the adjusting frame (3). The two adjusting frames (3) are respectively threaded to the upper and lower first threaded grooves (33). The clamping piece (4) is fixedly connected to a second elastic element (34) fixedly connected to the adjusting frame (3).

9. A new material composite shank stiffness testing machine for leather shoes according to claim 7, characterized in that: The limiting component includes friction plates (35) fixedly installed on both sides of the clamping plate (4). A second rotating rod (36) is rotatably connected to the adjusting frame (3). The two ends of the second rotating rod (36) are provided with second threaded grooves (37) with opposite thread directions. Two limiting plates (38) are slidably connected to the adjusting frame (3). The second rotating rod (36) passes through the two limiting plates (38). The two limiting plates (38) are threadedly connected to the second threaded grooves (37) on both sides respectively.

10. A new material composite shank stiffness testing machine for leather shoes according to claim 2, characterized in that: Multiple sets of rollers (39) are uniformly rotated inside the fixed cylinder (7), and the outer wall of the slide rod (8) and the outer wall of the rollers (39) are rolled in a vertical direction.

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