Universal jig

Abstract

The utility model discloses a universal jig, and relates to the technical field of production line transportation. The universal jig comprises a base plate, a plurality of positioning seats and a positioning scale. The base plate is provided with a first sliding mechanism extending in the first direction and a second sliding mechanism extending in the second direction, and the first sliding mechanism is in sliding fit with the second sliding mechanism; the multiple positioning seats are arranged on the first sliding mechanism, each positioning seat comprises a positioning contact block and a positioning pressing rod, and a jacking groove used for containing the positioning pressing rod to move in the third direction is formed in each positioning seat; the positioning ruler is arranged on the first sliding mechanism, the positioning seat is further provided with a positioning shifting piece, and the positioning shifting piece can be meshed with the positioning ruler. By adopting the technology provided by the utility model, the large-range accurate adjustment can be realized.

Description

A universal fixture Technical Field

[0001] This utility model relates to the field of production line transportation technology, and specifically to a general-purpose fixture. Background Technology

[0002] A jig is a tool used in the production process to fix, position, clamp, or support workpieces. Backlight modules are a key component of liquid crystal displays (LCDs), and they typically require jigs for fixing and transport. However, due to differences in batches and scale of backlight modules, different backlight modules require the use of jigs of corresponding specifications during processing, making the process quite cumbersome.

[0003] Based on this, Chinese invention patent document 1 (CN114623419A) discloses a universal backlight module limiting fixture, which limits the assembly of the film material through three limiting parts to prevent the film material from shifting. The sliding adjustment function enables the fixture to adapt to various types of backlights and realize the commonality of the fixture. However, it only achieves size adjustment through the fixed support part, fixed limiting component, first sliding part and second sliding part on the outer edge of the substrate, and the range of adjustment is limited. Its universality still has room for improvement.

[0004] Chinese invention patent document 2 (CN115857204A) also discloses a universal fixture for automatic lighting of LCD screens, which meets the positioning requirements of products with a wide range of sizes by adjusting the X-axis and Y-axis adjustment mechanisms. However, considering the specific structure of the fixture, it relies on an automatic adjustment mechanism for adjustment. For some LCD screens with special shapes (such as circular or arc-shaped), it may not fully meet their alignment and pressing requirements. Furthermore, the aforementioned universal fixture for automatic lighting of LCD screens includes multiple complex mechanical and electrical components, such as X-axis and Y-axis adjustment mechanisms, CCD alignment modules, and automatic pressing mechanisms. The manufacturing, assembly, and use costs of these components are relatively high. Summary of the Invention

[0005] This invention provides a universal fixture to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides a general-purpose fixture, which includes a base plate, multiple positioning seats and positioning scales.

[0007] The substrate is provided with a first sliding mechanism extending in a first direction and a second sliding mechanism extending in a second direction, wherein the first sliding mechanism and the second sliding mechanism are slidably engaged; a plurality of positioning seats are provided on the first sliding mechanism, each positioning seat including a positioning contact block and a positioning pressure rod, wherein the positioning seat is provided with a lifting groove for accommodating the positioning pressure rod to move in a third direction; the positioning scale is provided on the first sliding mechanism, wherein the positioning seat is also provided with a positioning paddle, the positioning paddle being capable of engaging with the positioning scale.

[0008] The beneficial effects of the technical solution provided by this utility model compared to the prior art are as follows:

[0009] The sliding engagement of the first and second sliding mechanisms on the horizontal plane allows for a wide range of product size adjustments, such as matching the product width in the first direction and the product length in the second direction. Multiple positioning seats are used to position the product; specifically, the positioning seats contact the mirror side of the product (typically a backlight module). The positioning paddle located in the first sliding mechanism engages with the positioning scale, enabling stepless continuous adjustment of the positioning seats within the first sliding mechanism. This allows the positioning seats to be adaptively adjusted on the plane according to the product size.

[0010] Furthermore, the positioning seat is equipped with a positioning lever, which allows the positioning contact block to be pushed out under leverage when the positioning seat is subjected to external force (such as a worker pressing down on the positioning rod) while it is located in the lifting groove. This enables quick disassembly and replacement of the positioning seat. Compared to conventional fixtures, the above-mentioned general-purpose fixture has a wider adjustable range, higher positioning accuracy, and lower usage and manufacturing costs.

[0011] In some embodiments, the positioning seat is recessed with a limiting groove, wherein the limiting grooves of two adjacent positioning seats located in the first sliding mechanism are arranged facing each other.

[0012] Using the above technical solution, the product is further limited by the limiting slot, and the shape and specifications of the limiting slot can be adapted to the shape of the product. For example, if the product is quadrilateral, the limiting slot can be quadrilateral. If the product has an arc-shaped outer edge, the limiting slot can be an arc shape that matches its curvature. Thus, only the positioning contact block needs to be adjusted to achieve the adaptation between the fixture and the product.

[0013] In some embodiments, the positioning seat further includes a support block that can engage with the positioning contact block, wherein the lifting groove is located on the support block, and the positioning pressure rod is embedded in the lifting groove and can elastically deform along the third direction.

[0014] Using the above technical solution, the positioning contact block and the support block are engaged by a snap-fit ​​structure, which allows for quick adjustment to adapt to the current product specifications by simply replacing the positioning contact block. In addition, the positioning pressure rod has a certain elastic deformation to maintain a stable engagement between the positioning contact block and the support block.

[0015] In some embodiments, the first sliding mechanism has connecting seats at both ends along the first direction for sliding engagement with the second sliding mechanism. The second sliding mechanism is provided with a positioning scale, and the connecting seats are provided with positioning paddles capable of engaging with the positioning scale. The positioning scale further increases the adjustment accuracy between the first and second sliding mechanisms.

[0016] In some embodiments, the positioning base is further provided with an overpressure protection block, which is spaced apart from the positioning paddle, so that when the positioning paddle deforms toward the side of the overpressure protection block, the overpressure protection block can press against the positioning paddle.

[0017] Since the engagement and matching between the positioning paddle and the positioning scale can be achieved through the deformation of the positioning paddle, the above technical solution is adopted to facilitate the operator to apply force to the positioning paddle inward while preventing excessive deformation of the positioning paddle that could lead to breakage.

[0018] In some embodiments, the outer edge of the substrate is also provided with a plurality of guides.

[0019] By employing the above technical solution, the embedding of multiple guide members facilitates positioning with the transmission mechanism when the external clamping device grips the fixture, thereby ensuring the accuracy of the fixture during transfer by the external clamping device. Furthermore, the guide members are provided with arc-shaped recesses.

[0020] In some embodiments, the outer edge of the substrate is provided with a wear-resistant strip, which is located on opposite sides of the positioning seat along the third direction to reduce wear on the fixture.

[0021] In some embodiments, a plurality of rollers are provided circumferentially around the bottom of the substrate. Using this technical solution, the rollers can be matched with the guide rails of the external transmission mechanism to guide the fixture, while reducing belt friction between the rollers and the external transmission mechanism.

[0022] In some embodiments, the first sliding mechanism is suspended on the substrate, wherein the substrate is provided with an isolation mesh on the side away from the first sliding mechanism along the third direction.

[0023] By adopting the above technical solution, an isolation net is added to prevent the FPC (flexible printed circuit board) from contacting and rubbing against the gear wires when it sags, thus preventing damage to the product. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of a universal fixture provided by this utility model;

[0026] Figure 2 is a magnified view of a portion of the structure in part A of Figure 1;

[0027] Figure 3 is an exploded structural diagram of an embodiment of the positioning seat of a universal fixture provided by this utility model;

[0028] Figure 4 is a magnified view of the partial structure of part B in Figure 1;

[0029] Figure 5 is a two-dimensional structural schematic diagram of an embodiment of a universal fixture provided by this utility model;

[0030] Figure 6 is a magnified view of the partial structure of part C in Figure 5;

[0031] Figure 7 is a top view of an embodiment of a general-purpose fixture provided by this utility model.

[0032] In the picture:

[0033] 10. Substrate; 11. First sliding mechanism; 110. Connecting seat; 12. Second sliding mechanism; 13. Guide component; 130. Arc-shaped notch; 14. Wear-resistant strip; 15. Roller; 16. Isolation mesh; 17. Probe module;

[0034] 20. Positioning seat; 21. Positioning contact block; 210. Limiting slot; 22. Positioning pressure rod; 23. Support block; 230. Lifting slot; 24. Positioning paddle; 25. Overpressure protection block; 30. Positioning scale. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0036] For ease of subsequent description, before describing the specific structure of the general-purpose fixture, this application first defines a first direction (X), a second direction (Y), and a third direction (Z) in conjunction with Figure 1. The first direction is the width direction of the general-purpose fixture when it is normally placed, for example, the X direction; the second direction is the length direction of the general-purpose fixture when it is normally placed, for example, the Y direction; and the third direction is the height direction of the general-purpose fixture when it is normally placed, for example, the Z direction. In this application, the first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

[0037] It is understood that the mutual perpendicularity in this application is not absolute perpendicularity. Approximate perpendicularity due to processing errors and assembly errors (e.g., the included angle between two structural features is 89.9°) is also within the scope of mutual perpendicularity in this application.

[0038] Referring to Figures 1 to 3, Figure 1 shows a three-dimensional structural schematic diagram of an embodiment of a universal fixture provided in this application; Figure 2 is a partial enlarged view of part A in Figure 1; Figure 3 shows an exploded structural schematic diagram of an embodiment of the positioning seat 20 of a universal fixture provided in this application.

[0039] In some embodiments, the general-purpose fixture includes: a base plate 10, a plurality of positioning seats 20 and a positioning scale 30.

[0040] The base plate 10 is provided with a first sliding mechanism 11 extending in a first direction and a second sliding mechanism 12 extending in a second direction, wherein the first sliding mechanism 11 and the second sliding mechanism 12 are slidably engaged; a plurality of positioning seats 20 are provided on the first sliding mechanism 11, and the positioning seat 20 includes a positioning contact block 21 and a positioning pressure rod 22, wherein the positioning seat 20 is provided with a lifting groove 230 for accommodating the positioning pressure rod 22 moving in a third direction; a positioning scale 30 is provided on the first sliding mechanism 11, wherein the positioning seat 20 is also provided with a positioning paddle 24, and the positioning paddle 24 and the positioning scale 30 can engage.

[0041] In this embodiment, the sliding cooperation between the first sliding mechanism 11 and the second sliding mechanism 12 on the horizontal plane allows for a wide range of product size matching and adjustment. For example, as shown in FIG1, both the first sliding mechanism 11 and the second sliding mechanism 12 include two guide rails spaced apart. The distance between the two guide rails can be adjusted by moving the two guide rails of the first sliding mechanism 11 to the second sliding mechanism 12, thereby adapting to the width of the product.

[0042] Among them, multiple positioning seats 20 are used to position the product. As shown in Figure 1, four positioning seats 20 are arranged in an array in the first sliding mechanism 11. Specifically, the positioning seats 20 are in contact with the mirror side of the product (the product is generally a backlight module). Thus, when the position of the positioning seat 20 is adjusted in the first sliding mechanism 11, the distance between two adjacent positioning seats 20 is adjusted to match the length of the product.

[0043] By engaging and locking the positioning paddle 24 located in the first sliding mechanism 11 with the positioning scale 30, the positioning seat 20 can be continuously adjusted steplessly in the first sliding mechanism 11. As shown in Figures 2 and 3, the positioning scale 30 has serrations that can engage with the positioning paddle 24, and thus the positioning seat 20 can be adjusted and aligned by the precise values ​​of the positioning scale 30.

[0044] In addition, the positioning seat 20 is equipped with a positioning pressure rod 22, as shown in Figure 3. The positioning seat 20 also includes a support block 23 that can engage with the positioning contact block 21, wherein the lifting groove 230 is located in the support block 23. The positioning contact block 21 and the support block 23 cooperate with each other using a snap-fit ​​structure, so that only the positioning contact block 21 needs to be replaced to achieve quick adjustment to adapt to the current product specifications. In some application scenarios, the positioning pressure rod 22 is embedded in the lifting groove 230 and can elastically deform along a third direction, that is, the positioning pressure rod 22 has a certain elastic deformation (preload) to maintain a stable engagement between the positioning contact block 21 and the support block 23. In summary, compared with conventional technical means, the above-mentioned general-purpose fixture can achieve a wide range of precise adjustments.

[0045] In some application scenarios, when the positioning seat 20 is subjected to external force (such as a worker pressing down on the positioning rod) within the lifting groove 230, the positioning rod 22 can push out the positioning contact block 21 under the action of leverage and elasticity, thereby realizing the quick disassembly and replacement of the positioning seat 20. For example, as shown in Figure 3, the support block 23 and the positioning contact block 21 are matched with a wedge structure, which can enhance their connection stability.

[0046] In some implementations, the positioning seat 20 is recessed with a limiting groove 210, wherein the limiting grooves 210 of two adjacent positioning seats 20 located in the first sliding mechanism 11 are arranged facing each other.

[0047] In this embodiment, the product is further limited by the limiting slot 210, and the shape and specifications of the limiting slot 210 can be adaptively adjusted according to the shape of the product. For example, when the product is quadrilateral, the limiting slot 210 can be quadrilateral; when the product has an arc-shaped outer edge (such as a circle, ellipse, etc.), the limiting slot 210 can be an arc shape that matches its curvature, so that only the positioning contact block 21 needs to be adjusted to achieve the adaptation between the fixture and the product.

[0048] In some implementations, the positioning base 20 is also provided with an overpressure prevention block 25, which is spaced apart from the positioning paddle 24, so that when the positioning paddle 24 deforms toward the side of the overpressure prevention block 25, the overpressure prevention block 25 can press against the positioning paddle 24.

[0049] Since the engagement between the positioning paddle 24 and the positioning scale 30 can be achieved by the deformation of the positioning paddle 24, by limiting the force applied to the inside of the positioning paddle 24, it is possible to prevent the positioning paddle 24 from being excessively deformed and thus breaking.

[0050] In some applications, the substrate 10 is also equipped with a probe module 17 to provide electrical connection to the supported product (backlight module) and to perform lighting tests and performance checks. It can also be equipped with a pressure sensor and a flow-blocking device to monitor pressure changes in real time during the crimping process and control the crimping pressure by adjusting the flow-blocking device. Since the application of the probe module 17 in the fixture is a standard feature, it will not be described in detail here.

[0051] See Figure 4, which is an enlarged view of the partial structure of part B in Figure 1.

[0052] In some embodiments, the first sliding mechanism 11 has connecting seats 110 at both ends along a first direction for sliding engagement with the second sliding mechanism 12. The second sliding mechanism 12 is provided with a positioning scale 30, and the connecting seats 110 are provided with positioning paddles 24 that can engage with the positioning scale 30. The positioning scale 30 is used to further increase the adjustment accuracy between the first sliding mechanism 11 and the second sliding mechanism 12.

[0053] For example, as shown in Figure 1, the first sliding mechanism 11 and the second sliding mechanism 12 can also cooperate with a damper to improve positioning accuracy, realizing stepless adjustment of the first sliding mechanism 11 on the second sliding mechanism 12. The lengths of the positioning paddle 24 located on the connecting seat 110 and the positioning paddle 24 located on the positioning seat 20 can be adjusted according to actual dimensions, and this application does not limit this.

[0054] Referring to Figure 5, Figure 5 shows a two-dimensional structural schematic diagram of an embodiment of a universal fixture provided in this application.

[0055] In some embodiments, a wear-resistant strip 14 is provided on the outer edge of the substrate 10. The wear-resistant strip 14 is located on opposite sides of the positioning seat 20 along a third direction to reduce wear on the fixture. Exemplarily, the wear-resistant strip 14 may be made of rubber.

[0056] In some embodiments, a plurality of rollers 15 are provided circumferentially around the bottom of the substrate 10. As shown in FIG5, the rollers 15 are located at the four corners of the substrate 10 so that they can match the guide rails of the external transmission mechanism, thereby assisting the fixture in guiding and reducing friction with belts, conveyor lines or other components of the external transmission mechanism.

[0057] As shown in Figure 6, which is a magnified view of the partial structure of part C in Figure 5.

[0058] In some embodiments, a plurality of guide members 13 are also embedded in the outer edge of the substrate 10. In this embodiment, by embedding a plurality of guide members 13, it is convenient to position the fixture with the external gripping device when it is gripped to the transfer mechanism, thereby ensuring the accuracy of the fixture when it is transferred by the external gripping device. Further, the guide member 13 is provided with an arc-shaped recess 130 as shown in FIG. 6. The semi-circular arc-shaped recess 130 can achieve positioning with the external gripping device and the external transfer mechanism (in a specific embodiment, the external gripping device and the external transfer mechanism can be provided with arc-shaped protrusions that mate with them), thereby reducing the correction process during the transfer process.

[0059] Referring to Figure 7, Figure 7 shows a top view of an embodiment of a general-purpose fixture provided in this application.

[0060] In some embodiments, the first sliding mechanism 11 is suspended on the substrate 10, wherein the substrate 10 is provided with an isolation net 16 on the side away from the first sliding mechanism 11 along a third direction.

[0061] In this embodiment, an isolation mesh 16 is added to prevent the FPC from contacting and rubbing against the gear wires when it droops, thus preventing damage to the product. Exemplarily, the isolation mesh 16 can be made of antistatic plastic (engineering plastics that, through modification, can suppress the generation of static electricity or quickly dissipate static electricity, such as PEEK or POM). This application does not limit the shape of the isolation mesh 16. For example, in a backlight module, the FPC is typically used to connect the driving circuit, LED strips, etc., and is mainly distributed on the sides of the backlight module. Therefore, the amount of isolation mesh 16 in the middle of the substrate 10 can be appropriately reduced.

[0062] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, should be included within the protection scope of this utility model.

Claims

1. A general-purpose fixture, characterized in that, include: A substrate, the substrate being provided with a first sliding mechanism extending in a first direction and a second sliding mechanism extending in a second direction, wherein the first sliding mechanism and the second sliding mechanism are slidably engaged; a plurality of positioning seats, the plurality of positioning seats being disposed on the first sliding mechanism, each positioning seat including a positioning contact block and a positioning pressure rod, wherein the positioning seat is provided with a lifting groove for accommodating the positioning pressure rod moving in a third direction; a positioning scale, the positioning scale being disposed on the first sliding mechanism, wherein the positioning seat is further provided with a positioning paddle, the positioning paddle being capable of engaging with the positioning scale.

2. The universal fixture according to claim 1, characterized in that, The positioning seat is recessed with a limiting groove, wherein the limiting grooves of two adjacent positioning seats located in the first sliding mechanism are arranged facing each other.

3. The general-purpose fixture according to claim 1, characterized in that, The positioning seat also includes a support block that can engage with the positioning contact block, wherein the lifting groove is located on the support block, and the positioning pressure rod is embedded in the lifting groove and can elastically deform along the third direction.

4. The universal fixture according to claim 1, characterized in that, The first sliding mechanism is provided with connecting seats at both ends along the first direction for sliding cooperation with the second sliding mechanism. The second sliding mechanism is provided with a positioning scale, and the connecting seats are provided with positioning paddles that can mesh with the positioning scale.

5. The general-purpose fixture according to claim 1, characterized in that, The positioning base is also connected to an overpressure prevention block, which is spaced apart from the positioning paddle, so that when the positioning paddle deforms toward the side of the overpressure prevention block, the overpressure prevention block can press against the positioning paddle.

6. The general-purpose fixture according to any one of claims 1 to 5, characterized in that, The outer edge of the substrate is also fitted with multiple guide members.

7. The general-purpose fixture according to claim 6, characterized in that, The guide component is provided with an arc-shaped notch.

8. The general-purpose fixture according to any one of claims 1 to 5, characterized in that, The outer edge of the substrate is provided with a wear-resistant strip, which is located on the opposite side of the positioning seat along the third direction of the substrate.

9. The general-purpose fixture according to any one of claims 1 to 5, characterized in that, The bottom of the substrate is provided with multiple rollers circumferentially.

10. The general-purpose fixture according to any one of claims 1 to 5, characterized in that, The first sliding mechanism is suspended on the substrate, wherein the substrate is provided with an isolation net on the side away from the first sliding mechanism along the third direction.

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