Clamping device for chip testing

Abstract

The utility model is suitable for the technical field of clamping devices, and provides a clamping device for chip testing, which comprises a base, a clamping device and a clamping device, the first ball screw rotates at the central position of the inner side wall of the base; the second ball screw is in key connection with one end of the first ball screw; the moving table is fixed on nut seats on the first ball screw and the second ball screw through nuts; the third ball screw rotates at the central position of the inner side wall of the moving table; the fourth ball screw is in key connection with one end of the third ball screw; the first limiting block is fixed on a nut seat on the third ball screw through a nut; the second limiting block is fixed on a nut seat on the fourth ball screw through a nut; the distance between the two first limiting blocks and the distance between the two second limiting blocks can be adjusted according to the size of a chip, and all-directional limiting of the chip can be achieved through the upper limiting plate with the adjustable height and the mutual cooperation of the baffle and the side limiting plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, and in particular relates to a clamping device for chip testing. Background Art

[0002] A chip is an integrated circuit formed by a large number of microelectronic components (transistors, resistors, capacitors, etc.) placed on a plastic substrate to make a chip. The chip needs to be tested during the processing and generally needs to be clamped using a clamping device.

[0003] In the prior art, a Chinese patent with a reference publication number of CN 220552889 U discloses a clamping device for IC chip testing, including a main body, a supporting mechanism fixedly connected to the bottom of the main body, an adjusting mechanism arranged on the top of the main body, a connecting mechanism arranged on the top of the adjusting mechanism, a clamping mechanism arranged on one side of the connecting mechanism, and a testing mechanism arranged on the top of the main body. The utility model controls the relative movement of two clamping plates to clamp the chip by a telescoping device of the clamping mechanism, and the rubber block is attached to the clamping surface of the clamping plate to avoid damage to the chip when the clamping plate clamps the chip, thereby increasing the practicality of the device.

[0004] The comparative document provides a clamping device for IC chip testing, but the above patent can only achieve the positioning and clamping of chips of a specific size, and has low adaptability. Moreover, when clamping multiple chips in sequence, the telescopic frame and telescope are required to complete reciprocating telescoping each time, which is not only inefficient but also greatly increases energy consumption.

[0005] Therefore, a clamping device for chip testing is proposed. Utility Model Content

[0006] The utility model provides a clamping device for chip testing, aiming to solve the above-mentioned problem.

[0007] The utility model is implemented as follows: a clamping device for chip testing comprises: a base; a first ball screw rotating at the central position of the inner side wall of the base; a second ball screw keyed to one end of the first ball screw; a moving platform fixed to the nut seats on the first ball screw and the second ball screw by nuts; a third ball screw rotating at the central position of the inner side wall of the moving platform; a fourth ball screw keyed to one end of the third ball screw; a first limit block fixed to the nut seat on the third ball screw by a nut; a fourth ball screw keyed to one end of the third ball screw; a first limit block fixed to the nut seat on the third ball screw by a nut; a fourth ball screw keyed to the first ... The second limit block of the nut seat on the fourth ball screw; a threaded rod that is screwed on the central position of the top of the first limit block and the second limit block through a thread; an upper limit plate that rotates on the bottom end of the threaded rod; a guide column arranged on the top of the upper limit plate; a side limit plate welded to the outer wall of the first limit block; a block welded to the outer wall of the second limit block; a groove and a slot opened on the outer wall of the block, the groove being located below the slot; a baffle that slides on the inner side of the groove; a spring arranged between the baffle and the baffle; and a handle welded to the top of the baffle.

[0008] Preferably, the screw threads in the first ball screw and the second ball screw have opposite rotation directions, and the screw threads in the third ball screw and the fourth ball screw have opposite rotation directions.

[0009] Preferably, the moving platform is slidably connected to the base, and the first limiting block and the second limiting block are both slidably connected to the moving platform.

[0010] Preferably, a clamping groove is formed on one side outer wall of the first limiting block, the second limiting block and the stopper.

[0011] Preferably, the tops of the first limiting block and the second limiting block are both provided with guide holes for the guide column to pass through.

[0012] Preferably, the groove and the baffle are slidably connected.

[0013] Preferably, the cross section of the baffle is a T-shaped structure.

[0014] Preferably, the first ball screw, the third ball screw and one end of the threaded rod are all provided with a hand wheel.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0016] The spacing between the two first limit blocks and the two second limit blocks can be adjusted according to the size of the chip, and the chip can be limited in all directions through the height-adjustable upper limit plate and the cooperation of the baffle plate and the side limit plate. When clamping the chip, it is only necessary to insert the chip horizontally between the first limit block and the second limit block. The operation is simple and convenient, and the efficiency is high. It also avoids the investment in auxiliary equipment and reduces energy consumption. It realizes the clamping and testing needs of chips of different sizes and specifications, and has high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an exploded schematic diagram of the base and the mobile platform of the utility model;

[0019] Figure 3 It is a schematic diagram of the second limit block and the stop block structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the first limit block structure of the utility model.

[0021] In the figure: 1. base; 2. first ball screw; 3. second ball screw; 4. moving platform; 5. third ball screw; 6. fourth ball screw; 7. first limit block; 8. second limit block; 9. threaded rod; 10. upper limit plate; 11. guide column; 12. side limit plate; 13. block; 14. groove; 15. slot; 16. baffle; 17. spring; 18. handle. DETAILED DESCRIPTION

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The present invention provides a clamping device for chip testing. Figure 1-4 As shown, it includes a base 1, a first ball screw 2 is rotatably connected at the central position of the inner wall of one side of the base 1, one end of the first ball screw 2 is keyed to the second ball screw 3, the nut seats on the first ball screw 2 and the second ball screw 3 are fixedly connected to a moving platform 4 through nuts, the moving platform 4 and the base 1 are slidably connected, a third ball screw 5 is rotatably connected at the central position of the inner wall of one side of the moving platform 4, one end of the third ball screw 5 is keyed to the fourth ball screw 6, and the nut seat on the third ball screw 5 is fixedly connected to a first limit block 7 through a nut, the nut seat on the fourth ball screw 6 is fixedly connected to a second limit block 8 through a nut, the first limit block 7 and the second limit block 8 are both slidably connected to the moving platform 4, and the tops of the first limit block 7 and the second limit block 8 are provided with slots for guide columns 11 to pass through. A guide hole, a threaded rod 9 is screwed together at the top central position of the first limit block 7 and the second limit block 8 through a threaded engagement, the bottom end of the threaded rod 9 is rotatably connected to an upper limit plate 10, a guide column 11 is arranged on the top of the upper limit plate 10, a side limit plate 12 is welded on the outer wall of the first limit block 7 on the side away from the second limit block 8, a stopper 13 is welded on the outer wall of the second limit block 8 on the side away from the first limit block 7, a groove 14 and a card slot 15 are provided on the outer wall of one side of the stopper 13 at a position close to the second limit block 8, the groove 14 is located below the card slot 15, a baffle 16 is slidably connected inside the card slot 15, the groove 14 and the baffle 16 are slidably connected, the cross section of the baffle 16 is a T-shaped structure, a spring 17 is arranged between the baffle 16 and the stopper 13, and a handle 18 is welded on the top of the baffle 16.

[0025] It should be noted that the existing chip clamping device can only realize the positioning and clamping of chips of a specific size, and has low adaptability. Moreover, when clamping multiple chips in sequence, the telescopic frame and the telescope are required to complete the reciprocating telescopic movement each time, which is not only inefficient but also greatly increases the energy consumption. The present embodiment can adjust the distance between the two first limit blocks 7 and the two second limit blocks 8 according to the size of the chip, and through the height-adjustable upper limit plate 10, and the cooperation of the baffle 16 and the side limit plate 12, the chip can be limited in all directions. When clamping the chip, it is only necessary to insert the chip horizontally between the first limit block 7 and the second limit block 8. The operation is simple and convenient, and the efficiency is high. It also avoids the investment in auxiliary equipment, reduces energy consumption, and realizes the clamping and testing needs of chips of different sizes and specifications, and has high adaptability.

[0026] Specifically, in the present embodiment, the present scheme mainly comprises a moving platform 4, a first limit block 7 and a second limit block 8. When in use, the spacing between adjacent first limit blocks 7 and adjacent second limit blocks 8 is adjusted according to the size of the chip, and the spacing between the first limit block 7 and the second limit block 8 is adjusted to ensure that the chip can be horizontally inserted between the two first limit blocks 7 and the two second limit blocks 8. Specifically, when the spacing between adjacent first limit blocks 7 and adjacent second limit blocks 8 is adjusted according to the width of the chip, the first ball screw 2 is rotated, and the first ball screw 2 drives the second ball screw 3 to rotate, and the moving platform 4 on the first ball screw 2 and the second ball screw 3 moves toward or oppositely, thereby realizing the spacing between adjacent moving platforms 4, and achieving the purpose of adjusting the spacing between adjacent first limit blocks 7 and adjacent second limit blocks 8. Then, the spacing between the first limit block 7 and the second limit block 8 is adjusted according to the length of the chip, and the third ball screw 5 is rotated, and the third ball screw 5 drives the fourth ball screw 6 to rotate. The first limit block 7 and the second limit block 8 on the third ball screw 5 and the fourth ball screw 6 move toward or oppositely to achieve the purpose of adjusting the distance between the first limit block 7 and the second limit block 8, and adjust the position of the upper limit plate 10 according to the height of the chip, so that the chip is limited in the vertical direction after being inserted into the clamping groove on the first limit block 7 and the second limit block 8, rotate the threaded rod 9, and under the limitation of the guide column 11, the position of the upper limit plate 10 is adjusted. After the debugging of the device is completed, when clamping the chip, the handle 18 is pulled upward, the baffle 16 slides in the slot 15, and the chip is horizontally inserted into the clamping groove on the first limit block 7 and the second limit block 8, and one side end of the chip contacts the side limit plate 12. When the chip is fully inserted, release the handle 18. Under the action of the rebound force of the spring 17, the baffle 16 moves downward, and the baffle 16 limits the other side end of the chip. After the chip is clamped, the horizontally clamped chip can be tested.

[0027] In a further preferred embodiment of the present invention, Figure 2 As shown, the screw threads in the first ball screw 2 and the second ball screw 3 have opposite rotation directions, and the screw threads in the third ball screw 5 and the fourth ball screw 6 have opposite rotation directions.

[0028] In this embodiment, the two moving platforms 4 can move towards or away from each other by rotating the screw threads in opposite directions, and the first limit block 7 and the second limit block 8 can move towards or away from each other.

[0029] In a further preferred embodiment of the present invention, Figure 1 , Figure 3 and Figure 4 As shown, a clamping groove is formed on one side outer wall of the first limiting block 7, the second limiting block 8 and the stopper 13.

[0030] In this embodiment, the clamping groove is provided to provide space for inserting the chip and to limit the edge of the chip, thereby achieving the limiting effect.

[0031] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the first ball screw 2, the third ball screw 5 and one end of the threaded rod 9 are all provided with a hand wheel.

[0032] In this embodiment, the first ball screw 2, the third ball screw 5 and the threaded rod 9 are convenient to rotate.

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A clamping device for chip testing, characterized in that: include: Base (1); A first ball screw (2) rotating at a central position of an inner side wall of the base (1); A second ball screw (3) key-connected to one end of the first ball screw (2); A movable platform (4) fixed to the nut seats on the first ball screw (2) and the second ball screw (3) via nuts; A third ball screw (5) rotating at the central position of the inner side wall of the moving platform (4); a fourth ball screw (6) key-connected to one end of the third ball screw (5); a first limiting block (7) fixed to a nut seat on the third ball screw (5) via a nut; a second limiting block (8) fixed to a nut seat on the fourth ball screw (6) via a nut; A threaded rod (9) screwed onto the central position of the top of the first limiting block (7) and the second limiting block (8) through a thread; An upper limit plate (10) rotated on the bottom end of the threaded rod (9); A guide post (11) disposed on the top of the upper limit plate (10); A side limiting plate (12) welded to the outer side wall of the first limiting block (7); A stopper (13) welded to the outer side wall of the second limiting block (8); A groove (14) and a clamping groove (15) are provided on the outer side wall of the stopper (13), wherein the groove (14) is located below the clamping groove (15); a baffle (16) sliding on the inner side of the groove (15); a spring (17) disposed between the baffle (16) and the stopper (13); and A handle (18) is welded to the top of the baffle (16).

2. A clamping device for chip testing as claimed in claim 1, characterized in that: The screw threads in the first ball screw (2) and the second ball screw (3) have opposite rotation directions, and the screw threads in the third ball screw (5) and the fourth ball screw (6) have opposite rotation directions.

3. A clamping device for chip testing as claimed in claim 1, characterized in that: The movable platform (4) and the base (1) are slidably connected, and the first limiting block (7) and the second limiting block (8) are slidably connected to the movable platform (4).

4. A clamping device for chip testing as claimed in claim 1, characterized in that: A clamping groove is provided on one side outer wall of the first limiting block (7), the second limiting block (8) and the stopper (13).

5. A clamping device for chip testing as claimed in claim 1, characterized in that: The tops of the first limiting block (7) and the second limiting block (8) are both provided with guide holes through which the guide column (11) can pass.

6. A clamping device for chip testing as claimed in claim 1, characterized in that: The groove (14) and the baffle (16) are slidably connected.

7. A clamping device for chip testing as claimed in claim 1, characterized in that: The cross section of the baffle (16) is a T-shaped structure.

8. A clamping device for chip testing as claimed in claim 1, characterized in that: One end of the first ball screw (2), the third ball screw (5) and the threaded rod (9) are all provided with a hand wheel.

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