Shoe sole clamping and positioning device

Abstract

The utility model discloses a shoe sole clamping and positioning device, and relates to the technical field of shoe processing, and the scheme is that the shoe sole clamping and positioning device comprises a positioning base; the two guide stand columns are oppositely arranged on the two sides of the positioning base; the two sides of the lifting sliding seat are arranged on the outer sides of the guide stand columns in a sleeving mode respectively, and the lifting sliding seat can do linear reciprocating motion relative to the axial directions of the two guide stand columns; the linkage base is installed at the end of the lifting sliding seat, at least one bidirectional guide groove is formed in the linkage base, and the two ends of the bidirectional guide groove face the positioning base; the two positioning contacts are installed at the openings in the two ends of the bidirectional guide groove respectively, and the positioning contacts and the inner wall of the bidirectional guide groove are in sliding guide fit; the clamping wheel can be prevented from generating position deviation along with swinging of the pressing block, and the stability and precision of the shoe sole machining reference are ensured.

Description

Technical Field

[0001] This utility model relates to the field of footwear processing technology, specifically to a shoe sole clamping and positioning device. Background Technology

[0002] In shoe manufacturing, sole clamping and positioning are crucial for ensuring both quality and efficiency. As a core component of shoes, the subsequent processes of stitching, carving, and assembly of the sole are all critical. During production, external forces can cause sole displacement, resulting in defects such as stitching misalignment and hole deviation, which can reduce product performance. Clamping and positioning, by constraining the spatial freedom of the sole, can effectively avoid these risks and ensure product consistency.

[0003] A shoe sole clamping and positioning device disclosed in authorization announcement number (CN110973767B) includes a clamping mechanism and a shoe sole carrier. The clamping mechanism comprises two opposing clamping assemblies, each with a clamping unit. Each clamping unit consists of a clamping driver, a floating seat, a pressure block, and clamping wheels. The floating seat is connected to the clamping driver, the pressure block is hinged to the floating seat via a rotating pin, and multiple clamping wheels are pivotally connected to the pressing end of the pressure block and distributed along it. During operation, when the clamping wheels on the pressure block contact the outer periphery of the shoe sole, under the reaction force of the shoe sole, the pressure block automatically swings around the rotating pin as an axis, adjusting its posture in real time to precisely match the contour shape of the outer periphery of the shoe sole, achieving adaptive fitting and stable clamping.

[0004] The structure disclosed in this patent has flaws in practical applications. Specifically, when using clamping wheels to position the shoe, it relies on two clamping wheels contacting the curved surface of the sole to drive the pressure block to swing. The sole is clamped by the pressure block swinging to a preset angle. However, this design has an inherent contradiction: during the swinging of the pressure block, the clamping wheels connected to the pressure block will inevitably shift in spatial position, causing them to deviate from the initial positioning reference point. This change in position renders the original positioning reference of the clamping wheels ineffective, resulting in decreased positioning accuracy. Ultimately, this affects the accuracy and consistency of subsequent processes such as sole grinding and stitching, making it difficult to meet the requirements of high-precision processing. Utility Model Content

[0005] The purpose of this utility model is to provide a shoe sole clamping and positioning device, which can address the problem in the prior art where the oscillation of the pressure block causes the clamping wheel to shift position, resulting in the failure of the shoe sole positioning reference and the inability to meet the requirements of high-precision grinding, sewing and other processes. The device can prevent the clamping wheel from shifting position due to the oscillation of the pressure block, and ensure the stability and accuracy of the shoe sole processing reference.

[0006] This utility model is achieved through the following technical solution:

[0007] A shoe sole clamping and positioning device includes: a positioning base; two guide columns arranged opposite to each other on both sides of the positioning base; a lifting slide, with its two sides respectively fitted onto the outer sides of the guide columns, the lifting slide capable of linear reciprocating motion relative to the axial direction of the two guide columns; a linkage base installed at the end of the lifting slide, the linkage base having at least one bidirectional guide groove, both ends of the bidirectional guide groove facing the positioning base; two positioning contacts, each installed at the opening at both ends of the bidirectional guide groove, the positioning contacts forming a sliding guide engagement with the inner wall of the bidirectional guide groove; and multiple transmission balls arranged along the extension path of the bidirectional guide groove to form a continuous transmission chain, the multiple transmission balls synchronously transmitting the displacement of one positioning contact to the other positioning contact.

[0008] Furthermore, in this utility model, the aforementioned bidirectional guide groove is a composite guide structure, comprising a ball drive section and linear guide sections on both sides; the positioning contact is installed in the linear guide section, and the positioning contact slides and guides with the linear guide section, and the positioning contact can at least partially move out of the linear guide section.

[0009] Furthermore, in this utility model, the above also includes a curved surface adapter extension, which is detachably installed at the end of the positioning contact.

[0010] Furthermore, in this utility model, the end of the aforementioned curved surface adapter extension is provided with an axially extending threaded connection cavity, and the outer wall of the positioning contact and the inner wall of the threaded connection cavity are engaged by threads.

[0011] Furthermore, in this utility model, the end of the positioning contact away from the transmission ball is provided with a universal ball socket; a universal ball head is assembled in the universal ball socket, the universal ball head and the universal ball socket are in clearance fit, the universal ball head is at least partially located outside the universal ball socket, and the surface wall of the universal ball head is provided with an adaptive deformation layer.

[0012] Furthermore, in this utility model, the above also includes a drive assembly, which includes a motor, a main drive shaft, and a mounting base; the two sides of the mounting base are respectively mounted on the top of the guide column; the motor is mounted on the mounting base, and the output end of the motor is connected to the main drive shaft; the main drive shaft passes through the lifting slide, and the main drive shaft is threadedly engaged with the lifting slide.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. This application utilizes a rigid linkage structure between bidirectional guide grooves and transmission balls to ensure that the two positioning contacts move only axially along the straight guide segment, maintaining their lateral position consistent with the initial positioning reference. Compared to the prior art's reliance on a swing mechanism that causes positioning contact offset, this device avoids lateral displacement errors caused by curved surface adaptation, significantly improving the accuracy of subsequent processes such as sole stitching and engraving.

[0015] 2. The universal ball joint at the end of the positioning contact in this application is rotatable. Combined with the adaptive deformation layer (such as silicone elastic material) on the surface wall, it upgrades traditional point contact to surface contact, matching any curvature surface of the shoe sole in real time. This device can increase the contact area, reduce local pressure, and avoid damage to the shoe sole material, while being particularly suitable for easily damaged fabrics such as mesh and cashmere.

[0016] 3. This application constructs a distributed clamping system by setting multiple bidirectional guide grooves on the linkage base. Each positioning contact achieves regional adaptive adjustment through an independent transmission ball chain, which can suppress the translation and rotation errors of the shoe sole. The positioning contact is equipped with a detachable curved surface adapter extension, which can extend the total stroke of the positioning contact and make it compatible with extreme curvature structures (such as the toothed outsole of trail running shoes). Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 A schematic diagram of a shoe sole clamping and positioning device;

[0019] Figure 2 This is a sectional view of the linkage base;

[0020] Figure 3 A schematic diagram illustrating the fit between the curved surface adapter extension and the positioning contact.

[0021] Figure 4 This is a schematic diagram showing the fit between the fixed ball joint and the ball head.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 1-Positioning base, 2-Guide column, 3-Lifting slide, 4-Mounting base, 5-Motor, 6-Linkage base, 7-Bidirectional guide groove, 8-Linear guide section, 9-Ball drive section, 10-Positioning contact, 11-Drive ball, 12-Threaded connection cavity, 13-Curved surface adapter extension, 14-Universal ball socket, 15-Adaptive deformation layer, 16-Universal ball head. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model. Example

[0025] Please refer to Figure 1 and Figure 2 This utility model provides a shoe sole clamping and positioning device. In the precision processing of shoe soles, such as stitching, carving, and assembly, accurate positioning is a core element in ensuring product quality. To solve the problems of traditional positioning methods being unable to adapt to complex curved surfaces and prone to displacement, this shoe sole clamping and positioning device achieves high-precision, adaptive, and stable clamping through an innovative structural design. The device consists of five core components: a positioning base 1 serving as an overall support platform; guide columns 2 symmetrically distributed on both sides of the positioning base 1, providing a linear motion track for the lifting slide 3; a lifting slide 3 that can slide axially along the guide columns 2; a linkage base 6 installed at the end of the lifting slide 3, the linkage base 6 having at least one bidirectional guide groove 7; and positioning contacts 10 distributed at the openings at both ends of the bidirectional guide groove 7, the positioning contacts 10 forming a sliding guide engagement with the inner wall of the guide groove. Furthermore, transmission balls 11 arranged along the extension path of the bidirectional guide groove 7 form a continuous transmission chain, realizing the synchronous transmission of the displacement of the positioning contacts 10.

[0026] During operation, the sole is first placed in the preset position of the positioning base 1 (directly below the linkage base 6). Then, the lifting slide 3 is controlled to move downwards along the guide column 2, causing the linkage base 6 and the positioning contact 10 to move synchronously downwards. Once the positioning contact 10 contacts the sole surface, thanks to the guiding constraint of the bidirectional guide groove 7 and the linkage characteristics of the transmission balls 11, the two positioning contacts 10 can adaptively adjust according to the contour of the sole surface. For example, if one side of the sole is a convex curved surface, the contact on that side will retract under pressure. Through the rolling transmission balls 11, the positioning contact 10 on the other side will extend synchronously by an equal distance, always maintaining symmetrical clamping of the sole. This displacement synchronization mechanism not only ensures compatibility with surfaces of different curvatures, but more importantly, during the adaptive adjustment process, the lateral position of the positioning contact 10 remains stable, avoiding positioning reference offset caused by uneven local force, and significantly improving the accuracy of subsequent processing steps.

[0027] It should be noted that, to further improve the accuracy of sole positioning, for soles with complex curved structures or large dimensions, multiple bidirectional guide grooves 7 can be added to the linkage base 6 to construct a multi-point positioning system. By arranging multiple sets of positioning contacts 10 in different areas (each set contains two positioning contacts 10 linked by transmission balls 11), multi-dimensional constraints on the sole can be achieved: longitudinal constraint: each set of positioning contacts 10, through the synchronous linkage of transmission balls 11, closely adheres to the local curved surface of the sole, offsetting vertical displacement errors; lateral constraint: multiple sets of positioning contacts 10 are distributed along the sole contour (such as key points such as the forefoot, arch, and heel), forming a distributed clamping network to suppress horizontal offset or rotation.

[0028] Please refer to Figure 2 In some embodiments of this application, the bidirectional guide groove 7 is a composite guide structure, including a ball drive section 9 and two linear guide sections 8 on both sides; the positioning contact 10 is installed in the linear guide section 8 and slides and guides with the linear guide section 8, and the positioning contact 10 can at least partially move out of the linear guide section 8. The middle of the bidirectional guide groove 7 is the ball drive section 9, and the two sides of the bidirectional guide groove 7 are the linear guide sections 8. The positioning contact 10 is installed in the linear guide section 8 through the guide structure and can reciprocate along the extension direction of the linear guide section 8. The design that the positioning contact 10 can at least partially move out of the linear guide section 8 allows the two positioning contacts 10 to be adaptively adjusted according to the curvature of the shoe sole through multiple drive balls 11 located between them.

[0029] When one side of the positioning contact 10 contacts the raised curved surface of the sole and retracts under pressure, the displacement of the positioning contact 10 is transmitted to the other side of the positioning contact 10 through the continuously arranged transmission balls 11 in the ball transmission section 9. This drives the positioning contact 10 to extend synchronously by an equal distance, thereby achieving adaptive fit to the curved surface of the sole. This composite guide structure ensures that the positioning contact 10 moves stably along a straight line while maintaining the consistency of the positioning reference through the synchronicity of the transmission balls 11. Furthermore, the ability of the positioning contact 10 to move out of the straight guide section 8 expands the adaptability to soles of different thicknesses and curvatures.

[0030] Please refer to Figure 3In some embodiments of this application, the positioning contact 10 is detachably connected to a curved surface adaptation extension 13, which is located at the end of the positioning contact 10 away from the transmission ball 11. By connecting the curved surface adaptation extension 13 to the positioning contact 10, the overall length of the positioning contact 10 can be increased. When positioning the curved surface of the shoe sole, the positioning contact 10 with the curved surface adaptation extension 13 can retract a longer distance inward into the linear guide segment 8 when it contacts the protrusion of the shoe sole. This allows the transmission ball 11 to push the other side positioning contact 10 to move a longer distance outward from the linear guide segment 8, thereby adapting to a curved surface with a larger curvature. This detachable design not only facilitates the replacement of extensions of different lengths according to the actual curvature of the sole surface, but also enhances the device's adaptability to soles with extreme curvatures (such as deep concave surfaces and high convex ridges) by extending the effective working stroke of the positioning contact 10 when facing complex curved surface structures. At the same time, it maintains the accuracy of synchronous adjustment of the transmission ball bearings 11, ensuring that a stable positioning reference can still be maintained when clamping large curvature surfaces.

[0031] Specifically, the end of the curved surface adapter extension 13 is provided with a threaded connection cavity 12 extending axially. The outer wall of the positioning contact 10 and the inner wall of the threaded connection cavity 12 are detachably connected through a threaded engagement. During assembly, one end of the positioning contact 10 is aligned with the threaded connection cavity 12 of the curved surface adapter extension 13. By rotating the positioning contact 10 and the curved surface adapter extension 13 relative to each other, their threaded structures are screwed together and locked, thus completing the connection. Different lengths or shapes of curved surface adapter extensions 13 can be flexibly replaced according to actual needs to adapt to diverse shoe sole curvatures, improving the versatility and adjustment accuracy of the device while ensuring connection strength.

[0032] Please refer to Figure 4 In some embodiments of this application, the end of the positioning contact 10 away from the transmission ball 11 is provided with a universal ball socket 14, and a universal ball head 16 that is clearance-fitted with the universal ball socket 14 is assembled inside the universal ball socket 14, and the universal ball head 16 is at least partially exposed outside the universal ball socket 14, and the surface of the universal ball head 16 is covered with an adaptive deformation layer 15.

[0033] The omnidirectional ball joint 16 can rotate freely within the omnidirectional ball socket 14, adapting to any angle change of the sole's curvature in real time, ensuring that the contact point is always perpendicular to the tangent direction of the curvature. When the omnidirectional ball joint 16 is pressed into contact with the sole's curvature, the adaptive deformation layer 15 (such as elastic materials like silicone or polyurethane) on the surface of the omnidirectional ball joint 16 undergoes flexible deformation, transforming the traditional point contact into surface contact. This not only increases the contact area and improves clamping stability but also fills the tiny depressions on the curvature by deformation, further enhancing positioning accuracy. This design is particularly suitable for soles with complex curved surfaces or irregular patterns (such as the serrated outsole of trail running shoes or the curved heel of leather shoes). While ensuring adaptive adjustment capabilities, it reduces local pressure through surface contact characteristics, avoiding damage to the sole surface material, achieving the dual benefits of precise positioning and flexible protection.

[0034] Please refer to Figure 1 In some embodiments of this application, the drive assembly includes a motor 5, a main drive shaft, and a mounting base 4. The mounting base 4 is fixed to the top of the guide column 2 on both sides. The motor 5 is mounted on the mounting base 4, and its output end is connected to the main drive shaft. The main drive shaft passes through the lifting slide 3 and forms a threaded engagement with it. When the main drive shaft rotates, the lifting slide 3 can perform linear reciprocating motion along the axial direction of the guide column 2. This is particularly suitable for shoemaking processes requiring high-frequency start / stop or precise positioning, ensuring the uniformity of pressure and positional accuracy when the positioning contact 10 contacts the sole, providing stable power support for subsequent sewing, carving, and other operations.

[0035] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A shoe sole clamping and positioning device, characterized in that, include: Positioning base (1); Two guide columns (2) are arranged opposite each other on both sides of the positioning base (1); The lifting slide (3) is fitted on both sides of the guide column (2) and can reciprocate linearly relative to the axis of the two guide columns (2). Linkage base (6), the linkage base (6) is installed at the end of the lifting slide (3), the linkage base (6) is provided with at least one double guide groove (7), both ends of the double guide groove (7) are facing the positioning base (1). Two positioning contacts (10) are respectively installed at the openings at both ends of the bidirectional guide groove (7), and the positioning contacts (10) form a sliding guide fit with the inner wall of the bidirectional guide groove (7); Multiple transmission balls (11) are arranged along the extension path of the bidirectional guide groove (7) to form a continuous transmission chain. The multiple transmission balls (11) are used to synchronously transmit the displacement of one of the positioning contacts (10) to another positioning contact (10).

2. The shoe sole clamping and positioning device according to claim 1, characterized in that, The bidirectional guide groove (7) is a composite guide structure, which includes a ball drive section (9) and straight guide sections (8) on both sides. The positioning contact (10) is installed in the linear guide section (8), and the positioning contact (10) slides and guides the linear guide section (8). The positioning contact (10) can at least partially move out of the linear guide section (8).

3. The shoe sole clamping and positioning device according to claim 2, characterized in that, It also includes a curved surface adapter extension (13), which is detachably mounted on the end of the positioning contact (10).

4. The shoe sole clamping and positioning device according to claim 3, characterized in that, The end of the curved surface adapter extension (13) is provided with an axially extending threaded connection cavity (12), and the outer wall of the positioning contact (10) and the inner wall of the threaded connection cavity (12) are threaded together.

5. A shoe sole clamping and positioning device according to claim 2, characterized in that, The positioning contact (10) has a universal ball socket (14) at the end away from the transmission ball (11). The universal ball socket (14) is equipped with a universal ball head (16), the universal ball head (16) and the universal ball socket (14) are in clearance fit, the universal ball head (16) is at least partially located outside the universal ball socket (14), and the surface wall of the universal ball head (16) is provided with an adaptive deformation layer (15).

6. A shoe sole clamping and positioning device according to any one of claims 1 to 5, characterized in that, It also includes a drive assembly, which includes a motor (5), a main drive shaft and a mounting base (4). The mounting base (4) is installed on the top of the guide column (2) on both sides; The motor (5) is mounted on the mounting base (4), and the output end of the motor (5) is connected to the main drive shaft; The main drive shaft passes through the lifting slide (3), and the main drive shaft is threadedly engaged with the lifting slide (3).

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