Clamping mechanism

Abstract

The utility model provides a clamping mechanism which comprises a bilateral guide rail. The first clamping assembly is arranged on the guide rail on one side in a sliding mode; the first clamping assembly is arranged on the guide rail on one side in a sliding mode, the second clamping assembly is arranged on the guide rail on the other side in a sliding mode, the first clamping assembly comprises a first clamping part, the second clamping assembly comprises a second clamping part, and the clamping direction of the first clamping part is opposite to the clamping direction of the second clamping part. Through the structural arrangement of the clamping part capable of bearing in a sliding mode and the clamping table, when the tested point of the tested plate is close to the edge, the lower probe insertion action of the probe is not influenced, manual testing is not needed, and the testing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a clamping mechanism. Background Art

[0002] There are many solutions for the clamping mechanism of the existing test machine in the industry: such as the connecting rod mechanism pressing mechanism, the flip clamping mechanism, the cylinder clamping mechanism, etc. These structures can achieve the function of clamping and fixing the PCB board under test. However, with the development of test technology, the improvement of the process capabilities of motherboard factory customers, and the increase in the richness of PCB boards, there are many PCB boards with test points very close to the edge of the board. When the test point is very close to the edge of the board, the probe cannot penetrate the needle to perform the needle action. Some test points that are too close will even be blocked by the clamping mechanism and cannot be tested, so manual testing has to be performed. Summary of the invention

[0003] The object of the present invention is to provide a clamping mechanism to at least solve the problem in the existing test clamping mechanism that the probe cannot probe downward and the test point that is too close is blocked by the clamping mechanism and cannot be tested.

[0004] In order to solve the above technical problems, the present invention provides a clamping mechanism, including double-sided guide rails; a first clamping assembly, which can be slidably set on the guide rails on one side; a second clamping assembly, which can be slidably set on the guide rails on the other side, the first clamping assembly includes a first clamping part, the second clamping assembly includes a second clamping part, and the clamping direction of the first clamping part is arranged opposite to the clamping direction of the second clamping part.

[0005] Optionally, in the clamping mechanism, the first clamping assembly further comprises a mounting seat, a slide groove is provided below the mounting seat, and the slide groove is adapted to the guide rail and enables the first clamping assembly to reciprocate along the guide rail.

[0006] Optionally, in the clamping mechanism, a guide shaft is provided inside the mounting seat, the first clamping portion is connected to the mounting seat via the guide shaft, and an elastic member is provided on the guide shaft.

[0007] Optionally, in the clamping mechanism, the first clamping portion includes a clamping member and a connecting member, one side of the connecting member is parallel to the clamping direction of the clamping member and connected to one end of the clamping member, and the other side of the connecting member is connected to the guide shaft.

[0008] Optionally, in the clamping mechanism, the clamping member includes a clamping groove.

[0009] Optionally, in the clamping mechanism, the first clamping assembly further includes an adjusting member, and the adjusting member is located on the first mounting seat and is used to fix or release the first clamping assembly to the guide rail.

[0010] Optionally, in the clamping mechanism, the adjusting member includes an embossed handle and a nut, and the embossed handle and the nut are connected by threads.

[0011] Optionally, in the clamping mechanism, the second clamping assembly includes a connecting seat and a second clamping member, one side of the connecting seat is parallel to the clamping direction of the second clamping member and is connected to one end of the second clamping member, and the other side of the connecting seat is slidably connected to the guide rail on the other side through a second sliding groove.

[0012] Optionally, in the clamping mechanism, the second clamping assembly includes a second adjusting member, and the second adjusting member is located on the movable member and is used to fix or release the second clamping assembly to the guide rail.

[0013] Optionally, in the clamping mechanism, the clamping directions of the first clamping portion and the second clamping portion are located in the same plane.

[0014] The clamping mechanism provided by the present invention solves the problem that when the measured point is close to the edge of the plate, the probe cannot penetrate the plate to perform the needle insertion action, and the measured point that is too close will be blocked by the clamping mechanism and cannot be tested, requiring manual testing, through the structural setting of the slidable load-bearing clamping part and the clamping table. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the clamping mechanism provided in this embodiment;

[0016] Figure 2 A schematic side sectional view of the first clamping assembly provided in this embodiment;

[0017] Figure 3 A schematic structural diagram of a first clamping assembly provided in this embodiment;

[0018] Figure 4 A schematic side sectional view of the second clamping assembly provided in this embodiment;

[0019] Figure 5 A schematic diagram of the structure of the second clamping assembly provided in this embodiment;

[0020] Figure 6 This is a schematic diagram of the simulation of the test points after the clamping mechanism provided in this embodiment clamps the board under test.

[0021] The symbols in the figure are described as follows:

[0022] 1-guide rail; 2-first clamping assembly; 3-tested board; 4-second clamping assembly; 5-probe;

[0023] 21-mounting seat; 211-slide groove; 212-adjusting member; 22-first clamping portion; 221-clamping member; 222-connecting member; 223-clamping groove; 224-guide shaft; 23-elastic member; 41-connecting seat; 411-second slide groove; 412-second adjusting member; 42-second clamping portion; 421-second clamping groove. DETAILED DESCRIPTION

[0024] The clamping mechanism proposed in the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the accompanying drawings is often a part of the actual structure. In particular, the emphasis of each accompanying drawing is different, and sometimes different proportions are used.

[0025] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish similar objects in order to describe the embodiments of the present invention, rather than to describe a specific order or sequence. It should be understood that the structures used in this way can be interchanged under appropriate circumstances. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] For a description of each structure, see Figure 1 , the moving track direction of the guide rail is the first direction, and the direction perpendicular to the moving track direction of the guide rail is the second direction, the first direction and the second direction are perpendicular to each other, and the first direction and the second direction are both located in a horizontal plane.

[0027] like Figure 1As shown, this embodiment provides a clamping mechanism, including a double-sided guide rail 1 arranged in parallel, a first clamping assembly 2, the first clamping assembly 2 can be slidably arranged on one side of the guide rail; a second clamping assembly 4, the second clamping assembly 4 can be slidably arranged on the other side of the guide rail, the first clamping assembly 2 includes a first clamping portion 22, the second clamping assembly 4 includes a second clamping portion 42, and the clamping direction of the first clamping portion 22 is arranged opposite to the clamping direction of the second clamping portion 42. The first clamping assembly 2 also includes a mounting seat 21, the lower end of the mounting seat 21 is slidably connected to the guide rail through a slide groove 211, so that the first clamping assembly 2 can reciprocate along the track of the guide rail 1. In this embodiment, the guide rail 1 is provided with a raised track 11 along the track, and the slide groove 211 is a U-shaped groove that is clamped and adapted to the raised track 11. The first clamping assembly 2 slides along the raised track 11 through the U-shaped slide groove 211 to reciprocate along the guide rail 1, and then adjusts different clamping positions according to the size of the board 3 to be tested.

[0028] Further, such as Figure 2 and Figure 3 As shown, the first clamping part 22 includes a clamping member 221 and a connecting member 222, the clamping member 221 is used to clamp the board to be tested, one side of the connecting member 222 is parallel to the clamping direction of the clamping member 221 and is connected to one end of the clamping member 221, and the other side of the connecting member 222 is connected to the guide shaft 224. In this embodiment, the first clamping part 22 and the second clamping part 42 are respectively facing the inner side of the two sets of guide rails, and the clamping grooves of the first clamping part 22 and the second clamping part 42 are horizontally oriented and open, which are used to clamp the board to be tested 3 horizontally between the two sets of guide rails. Since one side of the connecting member 22 is located in the same plane as the first clamping part 22 and is flush, when the measured point is very close to the edge of the board, the machine probe can normally probe down to perform the needle action, and the clamping mechanism will not block the probe probe that is probing down, and the machine can normally probe down to the test point without manual measurement, thereby improving the test efficiency. The first clamping part 22 and the second clamping part 42 are both provided with a clamping groove that is open in the horizontal direction, and the clamping groove has an upper and lower end surface, the lower end surface is used to carry the board under test, and the upper end surface is used to limit the board under test. In order to prevent the points to be tested that are closer to the edge of the board under test 3 from being blocked by the clamping part after the board under test 3 is clamped and fixed, the length of the upper end surface of the opening is smaller than the length of the lower end surface of the opening. When the board under test is placed on the clamping mechanism, only a small part of the upper end surface of the opening contacts the board under test for limiting the position, which will not affect the test of the points to be tested that are closer to the edge.

[0029] In order to fix the first clamping assembly 2 after sliding adjustment on the guide rail 1, the first clamping assembly 2 also includes an adjustment member 212, which is arranged on the mounting seat 21 and is used to fix or release the first clamping assembly 2 on the guide rail 1. In this embodiment, the adjustment member 212 includes an embossed handle and a T-shaped nut that penetrate the mounting seat 21, and the two are connected by threads. The embossed handle is located above the mounting seat 21 for easy operation, and the T-shaped nut is located below the mounting seat 21 and is inserted into the guide groove of the guide rail 1. When the first clamping assembly 2 slides along the guide rail 1, the T-shaped nut reciprocates along the guide groove at the same time. After the plate to be tested is adjusted to a suitable position, the embossed handle is rotated to fix the first clamping assembly 2 to the guide rail through the thread.

[0030] Furthermore, a guide shaft 224 is provided inside the mounting seat 21, and the first clamping portion 22 is connected to the mounting seat 224 through the guide shaft 224. The guide shaft 224 is arranged inside the mounting seat 224 along the second direction and extends a certain distance from the mounting seat 21 on the side close to the first clamping portion 22. The extended end of the guide shaft 224 is connected to the connecting member 222. After the connection, there is a certain distance between the connecting member 222 and the mounting seat 21. An elastic member 23 is provided on the guide shaft 224, one end of the elastic member 23 abuts the connecting member 222, and the other end abuts the mounting seat 21. The expansion and contraction direction of the elastic member 23 is parallel to the second direction. The first clamping portion 22 can move along the second direction toward the direction close to the mounting seat 21 through the elastic member 23, and the elastic member 23 is in a certain compression state. When the board 3 to be tested is placed in the clamping groove 223 on one side of the first clamping member 221, the first clamping portion 22 is driven by the placing thrust to move toward the side close to the mounting seat 21, and then abuts against the elastic member 23 and forms a certain compression deformation on the elastic member 23, leaving a certain placement space at the clamping position of the board 3 to be tested on the other side, and after the other end of the board 3 to be tested is clamped into the second clamping portion 42 of the second clamping assembly on the other side, the elastic member 23 will release the elastic force to press the board 3 to be tested, and horizontally clamp the board 3 to be tested and fixed between the clamping portions on both sides. In this embodiment, the elastic member 23 is a spring. The connecting member 222 is arranged in an L shape, that is, one end of the connecting member 222 is connected to the clamping member 221 and is located in the same plane as the clamping member 221, and the other end is bent upward to connect to the guide shaft 224. Of course, in other embodiments, the shape of the connecting member 222 can also be a straight line with the two sides respectively connected to the clamping member 221 and the mounting seat 21, and the connecting member 222 and the clamping member can also be arranged as an integrated structure, which is not specifically limited here.

[0031] Further, such as Figure 4 and Figure 5As shown, the second clamping assembly 4 includes a connecting seat 41, one side of the connecting seat 41 is parallel to the clamping direction of the second clamping part 42 and connected to one end of the second clamping part 42, and the other side of the connecting seat 41 is slidably connected to the other set of guide rails through a second slide groove 411. The second slide groove 411 at the lower end of the connecting seat 41 is adapted to the raised track 11 on the other side guide rail, so that the second clamping assembly 4 can slide along the raised track 11 through the second slide groove 411 to move the position and adjust the clamping position of the second clamping assembly 4. In this embodiment, the connecting seat 41 is Z-shaped, and the side part of the connecting seat 41 connected to the second clamping part 42 is flush with the second clamping part and located in the same plane, ensuring that when measuring the measured point near the edge position of the clamped measured board, it will not affect the probe's downward needle-piercing action, so that the probe can smoothly probe and complete the point measurement of the edge position of the measured board. The connecting seat 41 and the second clamping portion 42 may be integrally provided, and the connecting seat 41 may also be provided in a straight line shape, which is not specifically limited here.

[0032] The second clamping assembly 4 also includes a second adjusting member 412, which is located on the connecting seat 41 and is used to fix or release the second clamping assembly 4 to the guide rail. In this embodiment, the second adjusting member 412 includes an embossed handle and a T-nut, and the embossed handle and the T-nut are threadedly connected through the connecting seat 41 in the vertical direction. The embossed handle is located above the connecting seat 41 to facilitate the release or locking of the movement of the second adjusting assembly 412. The T-nut is arranged below the connecting seat 41 and is adapted to the track guide groove. The T-nut can reciprocate along the track of the track in the guide groove. The T-nut and the second slide groove 411 are adapted to the guide groove and the raised track on the guide rail respectively, so that the second clamping assembly 4 can be stably connected to the track, thereby improving the clamping stability of the measured plate.

[0033] Furthermore, the clamping directions of the first clamping portion 22 and the second clamping portion 42 are opposite and located in the same plane. Taking the double-sided guide rails as a horizontal plane as an example, the clamping portion 22 of the first clamping assembly 2 located on one side of the guide rail and the second clamping portion 42 of the second clamping assembly 4 located on the other side of the guide rail are both facing the horizontal direction and the first clamping portion 22 and the second clamping portion 42 are at the same height. The clamping groove 223 of the clamping member 221 and the second clamping groove 421 of the second clamping portion 42 are relatively parallel. After the board 3 to be tested is clamped on the clamping assembly, the board 3 to be tested is clamped in the horizontal direction as a whole, so that the probe above the board 3 to be tested can be lowered to measure the point position of the board to be tested. Of course, the clamping mechanism in the present application is also applicable to other equipment that needs to be clamped, and its track and clamping direction can be adjusted according to actual processing requirements, not limited to clamping in the horizontal direction. In order to clamp the board to be tested more stably on the clamping mechanism, such as Figure 1 As shown, a limit assembly may be provided on the guide rails on both sides, and the limit assembly is located on the side of the first clamping assembly 2 or the second clamping assembly 4 away from the clamped test plate 3. The structure of the limit assembly is similar to that of the second clamping assembly 4. The difference from the second clamping assembly 4 is that the connecting seat is connected to a stopper, and the length of the stopper is greater than the length of the second clamping portion 42 and has no clamping groove. After the clamping of the test plate is completed, the limit assembly can be slid on the track to block the side of the test plate by the stopper to improve the clamping stability.

[0034] Figure 6 The schematic diagram of the edge test point simulation after the board under test 3 is clamped in the clamping mechanism. Take two groups of first clamping components 2 set on one side rail and two groups of second clamping components 4 set on the other side rail as an example. When preparing for the test, install the clamping mechanism on the original main clamp and close the original main clamp. According to the size of the board under test, loosen the embossed handles of the first clamping components 2 and the second clamping components 4, push the first clamping components 2 and the second clamping components 4 to slide along the rails, and adjust their positions so that the two groups of first clamping components 2 and the two groups of second clamping components 4 can just carry the board under test 3. After adjusting the position, rotate the embossed handle to press and fix the four groups of clamping components to complete the position adjustment. One end of the board 3 to be tested is placed in the clamping groove 223 of the two groups of first clamping assemblies 2 and the compression elastic member 23 is slightly moved toward the guide rail direction close to one side of the first clamping assembly 2, so that the other side of the board 3 to be tested can be clamped into the second clamping groove 421 of the second clamping assembly 4. Since no elastic member is provided in the second clamping assembly 4, after the other side of the board 3 to be tested is clamped into the second clamping groove 421, under the thrust of the elastic member 23 of the first clamping assembly 2, the board 3 to be tested is pushed and fixed on one side to a certain extent, so that the board 3 to be tested can be stably clamped on the clamping mechanism. As can be seen from the figure, the clamping mechanism clamps both ends of the board 3 to be tested, so that after the board 3 to be tested is clamped, there is a large operating space above the board 3 to be tested, and even if the test point is close to the process edge, it does not affect the downward pressure of the test probe. When the board to be tested is close to the process edge, the clamping mechanism can be used to clamp and the machine can be tested, which effectively improves the test efficiency.

[0035] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present invention is not limited to this.

[0036] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A clamping mechanism, characterized in that: include: Double side rails; A first clamping assembly, wherein the first clamping assembly can be slidably disposed on the guide rail at one side; The second clamping assembly is slidably disposed on the guide rail on the other side, the first clamping assembly includes a first clamping portion, the second clamping assembly includes a second clamping portion, and the clamping direction of the first clamping portion is arranged opposite to the clamping direction of the second clamping portion.

2. The clamping mechanism according to claim 1, characterized in that: The first clamping assembly also includes a mounting seat, a slide groove is provided below the mounting seat, and the slide groove is adapted to the guide rail and enables the first clamping assembly to reciprocate along the guide rail.

3. The clamping mechanism according to claim 2, characterized in that: A guide shaft is provided inside the mounting seat, the first clamping portion is connected to the mounting seat via the guide shaft, and an elastic member is provided on the guide shaft.

4. The clamping mechanism according to claim 3, characterized in that: The first clamping portion includes a clamping member and a connecting member, one side of the connecting member is parallel to the clamping direction of the clamping member and connected to one end of the clamping member, and the other side of the connecting member is connected to the guide shaft.

5. The clamping mechanism according to claim 4, characterized in that: The clamping member comprises a clamping groove.

6. The clamping mechanism according to claim 2, characterized in that: The first clamping assembly further includes an adjusting member, which is located on the mounting seat and is used to fix or release the first clamping assembly to the guide rail.

7. The clamping mechanism according to claim 6, characterized in that: The adjusting member comprises an embossed handle and a nut, and the embossed handle and the nut are connected by threads.

8. The clamping mechanism according to claim 1, characterized in that: The second clamping assembly includes a connecting seat, one side of which is parallel to the clamping direction of the second clamping portion and connected to one end of the second clamping portion, and the other side of the connecting seat is slidably connected to the guide rail on the other side through a second sliding groove.

9. The clamping mechanism according to claim 8, characterized in that: The second clamping assembly further includes a second adjusting member, which is located on the connecting seat and is used to fix or release the second clamping assembly to the guide rail.

10. The clamping mechanism according to claim 1, characterized in that: The clamping directions of the first clamping portion and the second clamping portion are located in the same plane.

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