Clamp

Abstract

The utility model discloses a clamp, and relates to the technical field of clamps, and the clamp comprises a machine base provided with a first limiting part; the clamping assembly comprises four connecting rods hinged end to end, two oppositely-arranged connecting rods in the four connecting rods form a first set of connecting rods, the other two oppositely-arranged connecting rods form a second set of connecting rods, at least one connecting rod in the first set of connecting rods is provided with a second limiting part, and the first limiting part is matched with the second limiting part in a limiting mode; a base material clamping space is defined by the first group of connecting rods; and the first pushing part is used for pushing at least one connecting rod in the first group of connecting rods to rotate around the pivotal shaft of the connecting rod, so as to drive the second group of connecting rods pivotally connected with the connecting rod to move, so that the size of the base material clamping space is adjusted. The problem that in the prior art, the machining cost is increased on the premise that the universality of a clamp for clamping the mini case base material is guaranteed is effectively solved at least.

Description

Technical Field

[0001] The present application relates to the technical field of clamps, and in particular to a clamp. Background Art

[0002] Currently, in the mini-chassis manufacturing industry, traditional fixture designs play an important role in ensuring processing accuracy and efficiency, especially when fixing chassis substrates for complex processes such as cutting, grinding, and drilling. However, existing fixtures often have the following shortcomings:

[0003] 1. Structural complexity: Although traditional fixtures such as bench vises and rotary tables are highly versatile and stable, their complex mechanical structures significantly increase production costs, making it difficult for small processing companies to afford the high investment.

[0004] 2. Size adaptability limitations: While many specialized mini-chassis substrate fixtures can precisely secure substrates of specific sizes, single-size fixtures are insufficient when faced with diverse product demands. Frequent fixture changes inevitably reduce production efficiency and increase additional time and resource consumption. Utility Model Content

[0005] The present application provides a clamp to at least solve the problem in the related art that the clamp for clamping a mini chassis substrate increases the processing cost while ensuring versatility.

[0006] The present application provides a clamp, comprising: a machine base, having a first limiting portion; a clamping assembly, comprising four connecting rods hinged end to end, wherein two connecting rods arranged opposite to each other among the four connecting rods form a first group of connecting rods, and the remaining two connecting rods arranged opposite to each other form a second group of connecting rods, at least one connecting rod in the first group of connecting rods is provided with a second limiting portion, and the first limiting portion and the second limiting portion are limitedly matched; the first group of connecting rods are surrounded to form a substrate clamping space; a first pushing portion, the first pushing portion is used to push at least one connecting rod in the first group of connecting rods to rotate around its pivot axis, thereby driving the second group of connecting rods pivotally connected to the connecting rod to move, so as to adjust the size of the substrate clamping space.

[0007] Furthermore, the clamp includes: a first driving device, which is drivingly connected to the first end of the first pushing part to drive the first pushing part to move, and the second end of the first pushing part is used to push at least one connecting rod in the first group of connecting rods to rotate around its pivot axis.

[0008] Furthermore, the first driving device drives the first pushing part to rotate around its own central axis; the machine base has a first internal threaded hole, the first pushing part has a first external threaded section, and the first external threaded section extends into the first internal threaded hole to be threadedly connected with the first internal threaded hole.

[0009] Furthermore, the base has a third limiting portion, which is located in the substrate clamping space; the clamp also includes: a second driving device; a second pushing portion, the second driving device is drivingly connected to the first end of the second pushing portion to drive the second pushing portion to move, and the second end of the second pushing portion is used to push the substrate located in the substrate clamping space until the substrate is pushed to the limit stop with the third limiting portion.

[0010] Furthermore, the second driving device drives the second pushing part to rotate around its own central axis; the machine base has a second internal threaded hole, the second pushing part has a second external threaded section, and the second external threaded section extends into the second internal threaded hole to be threadedly connected with the second internal threaded hole.

[0011] Furthermore, the first group of connecting rods includes a first connecting rod and a second connecting rod, and the second group of connecting rods includes a third connecting rod and a fourth connecting rod; the first end of the third connecting rod is pivotally connected to the first connecting rod through a first pin shaft, and the second end of the third connecting rod is pivotally connected to the second connecting rod through a second pin shaft; the first end of the fourth connecting rod is pivotally connected to the first connecting rod through a third pin shaft, and the second end of the fourth connecting rod is pivotally connected to the second connecting rod through a fourth pin shaft; wherein, the first connecting rod has an extension portion, and the first pushing portion is used to push the extension portion to rotate around the first pin shaft.

[0012] Furthermore, the clamp also includes: a tension spring, a first end of the tension spring is connected to the machine base, and a second end of the tension spring is connected to the fourth pin shaft to apply elastic tension to the fourth pin shaft.

[0013] Furthermore, the second limiting portion is provided at the middle portion of the third connecting rod and / or the fourth connecting rod.

[0014] Furthermore, the first connecting rod has a first surface arranged toward the second connecting rod, and the second connecting rod has a second surface arranged toward the first connecting rod, and a substrate clamping space is formed between the first surface and the second surface; wherein a buffer pad is provided on the first surface and / or the second surface.

[0015] Furthermore, the base includes: a base body; a first lug, which is provided on the base body and has a first internal threaded hole; and a second lug, which is provided on the base body and has a second internal threaded hole.

[0016] By applying the technical solution of this application, the first and second sets of connecting rods are hinged to form a parallelogram structure. This allows the first pusher to automatically center the substrate within the substrate clamping space without the need for additional manual adjustment, ensuring accuracy during processing, simplifying the operation process, and improving work efficiency. Furthermore, the design of the first pusher pushing the connecting rod allows the user or automated equipment to directly change the size of the substrate clamping space through a pushing action, thereby meeting the clamping requirements of different substrates. This reduces the processing cost of the fixture while ensuring universality, thereby resolving the problem in the related art of increasing the processing cost of fixtures for clamping mini-chassis substrates while ensuring universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 An exploded view of a fixture provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the clamping assembly of the clamp;

[0020] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the fixture;

[0021] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the clamp holding the substrate;

[0022] Figure 5 for Figure 4 Schematic diagram of the three-dimensional structure from another angle when the clamp clamps the substrate.

[0023] The above drawings include the following reference numerals:

[0024] 10. Machine base; 11. First internal threaded hole; 12. First limiting portion; 13. Third limiting portion; 14. Second internal threaded hole; 15. Machine base body;

[0025] 20. First set of connecting rods; 21. Substrate clamping space; 22. First connecting rod; 221. Extension portion; 23. Second connecting rod;

[0026] 30. Second connecting rod; 31. Third connecting rod; 32. Fourth connecting rod;

[0027] 40. Second limiting portion;

[0028] 50. First pushing portion; 51. First external thread segment;

[0029] 60. First driving device;

[0030] 70. Second driving device;

[0031] 80. Second pushing portion; 81. Second external thread segment;

[0032] 91, first pin; 92, second pin; 93, third pin; 94, fourth pin;

[0033] 100. Tension spring; 110. Base material. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present application. The terms "mounted," "connected," and "connected" should be interpreted broadly, and may include, for example, fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. The terms "parallel," "perpendicular," and "equal" encompass the described conditions and conditions similar to the described conditions, provided that the range of the similar conditions is within an acceptable range of deviation, as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0037] In order to solve the problem in the related art that the processing cost of the clamp for clamping the mini chassis substrate is increased while ensuring versatility, the present application provides a clamp.

[0038] like Figures 1 to 5As shown, the clamp includes a base 10, a clamping assembly, and a first pusher 50. The base 10 has a first limiting portion 12. The clamping assembly includes four hinged links. Two of the four links, arranged opposite each other, form a first set of links 20, and the remaining two, arranged opposite each other, form a second set of links 30. At least one of the links in the first set of links 20 is provided with a second limiting portion 40, which cooperates with the first limiting portion 12 to limit the position of the second limiting portion 40. The first set of links 20 surrounds and forms a substrate clamping space 21. The first pushing portion 50 is used to propel at least one link in the first set of links 20 to rotate about its pivot axis, thereby driving the second set of links 30, pivotally connected to the link, to adjust the size of the substrate clamping space 21.

[0039] Using the technical solution of this embodiment, the first set of connecting rods 20 and the second set of connecting rods 30 are hinged to form a parallelogram structure. This allows the first pusher 50 to automatically center the substrate 110 within the substrate clamping space 21, eliminating the need for additional manual adjustment. This ensures precision during processing, simplifies the operational process, and improves work efficiency. Furthermore, the design of the first pusher 50 pushing the connecting rods allows the user or automated equipment to directly change the size of the substrate clamping space 21 through a pushing action, thereby accommodating the clamping action for different substrates. This reduces the manufacturing cost of the fixture while ensuring versatility, thereby resolving the problem in related art of increasing the manufacturing cost of fixtures for clamping mini-chassis substrates while ensuring versatility.

[0040] like Figure 1 、 Figure 3 As shown in Figure 5, the clamp includes a first drive device 60, which is drivably connected to the first end of the first pushing portion 50 to drive the first pushing portion 50 to move, and the second end of the first pushing portion 50 is used to push at least one connecting rod in the first group of connecting rods 20 to rotate around its pivot axis. In this way, the above-mentioned arrangement of the first drive device 60 improves the automation of the operation of the clamp. By precisely controlling the movement of the first pushing portion 50, dynamic adjustment of the first group of connecting rods 20 can be achieved, thereby precisely controlling the dimensional changes of the substrate clamping space 21 and improving the positioning accuracy and repeatability during the processing. At the same time, the first drive device 60 can adjust the motion parameters (such as speed and stroke) of the first pushing portion 50 according to different processing requirements, so that the clamp can adapt to a more diverse range of processing scenarios and substrate types, increasing the versatility and flexibility of the clamp.

[0041] like Figure 1As shown, the first drive device 60 drives the first pusher 50 to rotate about its own central axis. The base 10 has a first internally threaded hole 11, and the first pusher 50 has a first externally threaded section 51. The first externally threaded section 51 extends into the first internally threaded hole 11 to be threadedly connected to the first internally threaded hole 11. Thus, the first drive device 60 drives the first pusher 50 to rotate, and the first externally threaded section 51 on the first pusher 50 is threadedly connected to the first internally threaded hole 11 on the base 10. This precisely converts rotary motion into linear motion. The accuracy and controllability of this linear motion far exceeds the simple push or pull methods used in traditional clamps, allowing for more precise control of the clamping force and clamping position. Furthermore, the self-locking nature of the threaded connection ensures that the first pusher 50 remains stably in place. Even if vibration or impact is encountered during processing, the clamp can maintain a stable grip on the substrate, avoiding processing errors caused by clamp loosening and improving processing quality and yield.

[0042] In this embodiment, by changing the rotation angle of the first pushing portion 50, its telescopic length in the first internal threaded hole 11 can be adjusted, thereby achieving adaptive clamping of substrates of different sizes. This adjustment method is not only flexible, but also can adapt to a wider range of sizes, so that the clamp can play a good role in a variety of application scenarios.

[0043] like Figure 1 、 Figure 3 As shown in Figure 5, the base 10 has a third limiting portion 13, which is located within the substrate clamping space 21. The clamp also includes a second driving device 70 and a second pushing portion 80. The second driving device 70 is drivingly connected to the first end of the second pushing portion 80 to drive the second pushing portion 80 to move. The second end of the second pushing portion 80 is used to push the substrate 110 located within the substrate clamping space 21 until the substrate 110 is pushed to a position where it contacts the third limiting portion 13. In this way, the second driving device 70 drives the second pushing portion 80 to move until the substrate 110 contacts the third limiting portion 13. This improvement ensures the precise centering of the substrate in the length direction. Combined with the self-centering capability in the width direction described above, this achieves comprehensive self-centering positioning of the substrate in three-dimensional space, greatly improving processing accuracy. At the same time, the linkage between the second driving device 70 and the second pushing part 80 realizes the automation of the substrate advancing process, and there is no need to manually adjust the position of the substrate. This not only reduces labor costs, but also avoids inaccurate positioning due to human operation errors, thereby improving the automation level and production efficiency of the processing process.

[0044] In this embodiment, the second driving device 70 drives the second pushing portion 80 and the third limiting portion 13 , which not only improves the self-centering positioning function of the substrate, but also enhances the processing accuracy and safety.

[0045] like Figure 1 As shown, the second driving device 70 drives the second pushing part 80 to rotate around its own central axis; the machine base 10 has a second internal threaded hole 14, and the second pushing part 80 has a second external threaded section 81, and the second external threaded section 81 extends into the second internal threaded hole 14 to be threadedly connected to the second internal threaded hole 14. In this way, the second pushing part 80 can achieve precise pushing of the substrate through the linear motion conversion of the threaded connection until the substrate contacts and stops with the third limiting part 13. This design ensures that the positioning of the substrate before processing is accurate and improves the consistency and accuracy of the processing. At the same time, the self-locking characteristics of the threaded connection ensure that the second pushing part 80 can stably maintain its position after pushing the substrate into place. Even if it encounters vibration or impact during the processing process, the substrate can remain in the accurate position on the third limiting part 13, avoiding processing errors caused by misaligned positioning.

[0046] like Figure 2 As shown, the first connecting rod group 20 includes a first connecting rod 22 and a second connecting rod 23, and the second connecting rod group 30 includes a third connecting rod 31 and a fourth connecting rod 32. The first end of the third connecting rod 31 is pivotally connected to the first connecting rod 22 via a first pin 91, and the second end of the third connecting rod 31 is pivotally connected to the second connecting rod 23 via a second pin 92. The first end of the fourth connecting rod 32 is pivotally connected to the first connecting rod 22 via a third pin 93, and the second end of the fourth connecting rod 32 is pivotally connected to the second connecting rod 23 via a fourth pin 94. The first connecting rod 22 has an extension 221, and the first pushing portion 50 is used to push the extension 221 to rotate about the first pin 91. In this way, the first pushing portion 50 acts on the extension 221 of the first connecting rod 22. Through the pivoting action of the pin, the linear motion of the pushing portion is converted into the rotational motion of the connecting rod system, thereby accurately transmitting force to the substrate clamping component, achieving efficient force conversion and precise control. At the same time, the four-point pivot connection design of the linkage system enables the substrate clamping component to automatically adjust its position according to the actual size of the substrate, ensuring the substrate is centered inside the fixture, optimizing the self-centering function and improving processing accuracy.

[0047] In this embodiment, the first group of connecting rods 20 and the second group of connecting rods 30 are pivotally connected through the pin shaft, and the first pushing portion 50 cooperates with the extension portion 221 of the first connecting rod 22, which not only optimizes the self-centering function and improves the clamping accuracy and stability, but also improves the performance of the clamp through compact structure, strong flexibility, simple maintenance and cost-effectiveness.

[0048] like Figure 1 、 Figures 3 to 5As shown, the clamp further includes a tension spring 100, a first end of which is connected to the base 10, and a second end of which is connected to the fourth pin 94, so as to apply elastic tension to the fourth pin 94. Thus, by applying tension to the fourth pin 94, the tension spring 100 helps to balance the stress distribution of the connecting rod system during operation, preventing deformation or damage of the connecting rod due to excessive force on one side, thereby enhancing the structural stability and durability of the clamp as a whole.

[0049] Optionally, the second stopper 40 is disposed in the middle of the third connecting rod 31 and / or the fourth connecting rod 32. Placing the second stopper 40 in the middle of the connecting rod serves as an additional reference point for substrate positioning, ensuring more accurate positioning of the substrate before processing. Especially during the dynamic operation of the connecting rod system, the middle stopper can more effectively control the movement trajectory of the substrate, reducing the possibility of positional deviation, thereby improving processing accuracy.

[0050] Optionally, the first connecting rod 22 has a first surface facing the second connecting rod 23, and the second connecting rod 23 has a second surface facing the first connecting rod 22, with the substrate clamping space 21 formed between the first and second surfaces. A buffer pad is provided on the first and / or second surfaces. In this way, the provision of the buffer pad can significantly reduce or prevent scratches, indentations, or other physical damage to the connecting rod surface when clamping the substrate. Furthermore, the buffer pad can increase the coefficient of friction between the substrate and the connecting rod contact surface, allowing the substrate to be more securely clamped in the fixture even under unstable processing conditions such as vibration and impact, reducing substrate displacement or vibration.

[0051] like Figure 1 As shown, the base 10 includes a base body 15, a first lug, and a second lug. The first lug is disposed on the base body 15 and has a first internally threaded hole 11. The second lug is disposed on the base body 15 and has a second internally threaded hole 14. Thus, by including the first and second lugs with internally threaded holes, the base 10 not only enhances installation stability, improves force transmission efficiency, and increases adjustment flexibility, but also simplifies the assembly process, enhances structural compactness and durability, and optimizes the performance of the clamp system from multiple perspectives.

[0052] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0053] The first and second sets of connecting rods are hinged together to form a parallelogram structure. This allows the first pusher to automatically center the substrate within the substrate clamping space, eliminating the need for manual adjustment. This ensures precision during processing, simplifies the process, and improves efficiency. Furthermore, the design of the first pusher's pusher allows the user or automated equipment to directly adjust the size of the substrate clamping space with a push, thereby accommodating the clamping action for different substrates. This reduces the fixture's manufacturing costs while ensuring versatility, resolving the issue of prior art for mini-chassis substrate clamps that increases manufacturing costs while maintaining versatility.

[0054] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A clamp, characterized in that: include: A machine base (10) having a first limiting portion (12); A clamping assembly comprises four connecting rods hinged end to end, wherein two connecting rods arranged opposite to each other form a first group of connecting rods (20), and the remaining two connecting rods arranged opposite to each other form a second group of connecting rods (30), at least one connecting rod in the first group of connecting rods (20) is provided with a second limiting portion (40), and the first limiting portion (12) and the second limiting portion (40) are limitedly matched; the first group of connecting rods (20) surround and form a substrate clamping space (21); A first pushing portion (50) is used to push at least one connecting rod in the first group of connecting rods (20) to rotate around its pivot axis, thereby driving the second group of connecting rods (30) pivotally connected to the connecting rod to move, so as to adjust the size of the substrate clamping space (21).

2. The clamp according to claim 1, characterized in that The fixture comprises: A first driving device (60) is drivingly connected to a first end of the first pushing portion (50) to drive the first pushing portion (50) to move, and a second end of the first pushing portion (50) is used to push at least one connecting rod in the first group of connecting rods (20) to rotate around its pivot axis.

3. The clamp according to claim 2, characterized in that The first driving device (60) drives the first pushing portion (50) to rotate around its own central axis; the machine base (10) has a first internal threaded hole (11), and the first pushing portion (50) has a first external threaded section (51), and the first external threaded section (51) extends into the first internal threaded hole (11) to be threadedly connected to the first internal threaded hole (11).

4. The clamp according to claim 3, characterized in that The machine base (10) has a third limiting portion (13), and the third limiting portion (13) is located in the substrate clamping space (21); the clamp further comprises: A second driving device (70); The second pushing portion (80) is connected to the first end of the second pushing portion (80) for driving the second pushing portion (80) to move, and the second end of the second pushing portion (80) is used to push the substrate (110) located in the substrate clamping space (21) until the substrate (110) is pushed to the limit stop with the third limit portion (13).

5. The clamp according to claim 4, characterized in that The second driving device (70) drives the second pushing portion (80) to rotate around its own central axis; the machine base (10) has a second internal threaded hole (14), and the second pushing portion (80) has a second external threaded section (81), and the second external threaded section (81) extends into the second internal threaded hole (14) to be threadedly connected to the second internal threaded hole (14).

6. The clamp according to claim 1, wherein: The first group of connecting rods (20) includes a first connecting rod (22) and a second connecting rod (23), and the second group of connecting rods (30) includes a third connecting rod (31) and a fourth connecting rod (32); the first end of the third connecting rod (31) is pivotally connected to the first connecting rod (22) via a first pin (91), and the second end of the third connecting rod (31) is pivotally connected to the second connecting rod (23) via a second pin (92); the first end of the fourth connecting rod (32) is pivotally connected to the first connecting rod (22) via a third pin (93), and the second end of the fourth connecting rod (32) is pivotally connected to the second connecting rod (23) via a fourth pin (94); wherein the first connecting rod (22) has an extension portion (221), and the first pushing portion (50) is used to push the extension portion (221) to rotate around the first pin (91).

7. The clamp according to claim 6, characterized in that The fixture further comprises: A tension spring (100), wherein a first end of the tension spring (100) is connected to the machine base (10), and a second end of the tension spring (100) is connected to the fourth pin shaft (94) to apply elastic tension to the fourth pin shaft (94).

8. The clamp according to claim 6, wherein: The second limiting portion (40) is arranged in the middle of the third connecting rod (31) and / or the fourth connecting rod (32).

9. The clamp according to claim 6, characterized in that The first connecting rod (22) has a first surface arranged toward the second connecting rod (23), and the second connecting rod (23) has a second surface arranged toward the first connecting rod (22), and the substrate clamping space (21) is formed between the first surface and the second surface; wherein a buffer pad is provided on the first surface and / or the second surface.

10. The clamp according to claim 5, characterized in that The base (10) comprises: Machine base body (15); A first lug is provided on the base body (15), wherein the first lug has the first internal threaded hole (11); A second lug is provided on the base body (15), and the second lug has the second internal threaded hole (14).

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