Chip on chip (COC) fishbone chip test fixture

Abstract

The invention relates to the technical field of COC chip test fixtures, in particular to a COC fishbone chip test fixture, which comprises a cover plate and a main body plate, a fixed plate is placed between the main body plate and the positioning piece, the fixed plate is connected with a rotating plate, the rotating plate is connected with a moving plate through a pin shaft, a chute is formed in the chute of the fixed plate, a sliding block is installed on the inner wall of the chute, and a clamping block is installed on the outer wall of the sliding block; a fixing part is movably connected to the joint of the moving plate and the rotating plate, the fixing part is fixedly connected with the convex part of the cover plate, the cover plate is connected with the clamping mechanism, and when the cover plate is connected with and separated from the main body plate, the clamping mechanism is driven to clamp a chip, so that the clamping mechanism is more durable in use and does not need to be frequently disassembled and assembled; when the clamping mechanism is used for clamping, the bottom plate can carry out negative pressure adsorption on the chip, so that the chip is fixed in the lateral direction and the vertical direction, and the clamping effect of the chip is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of COC chip testing jigs, and in particular to a COC herringbone chip testing jig. Background Art

[0002] COC packaging is a technology that fixes the chip in a specific patch area of ​​the substrate through processes such as molten eutectic. Before COC packaging, the chip needs to undergo a series of tests, such as push-pull force test and aging test, to ensure the quality and performance of the chip. Due to the small size of the COC substrate and chip, these packaging and testing processes need to be performed on a dedicated fixture.

[0003] China Patent Network has published a publication number: CN215375684U, which discloses a COC chip aging test fixture, including a cover plate, a main body plate, a spring plate, a positioning plate, a bottom plate, and pin holes and threaded holes that are sequentially arranged from top to bottom, and sequentially penetrate the cover plate, the main body plate, the spring plate, the positioning plate, and the bottom plate. The tops on both sides of the positioning plate at a closer distance are provided with a plurality of placement holes for placing the COC chip, the spring plate is provided with an arched spring piece matching each placement hole, the main body plate is provided with a notch matching each spring piece, the tops on both sides of the main board at a farther distance are provided with bumps, the cover plate is provided with a clamping block matching the spring piece, the cover plate is connected to the bottom plate through screws passing through the threaded holes, and the COC chip can be taken in and out by simply repeatedly loosening and tightening the screws. The structure is simple, convenient, fast, and efficient. The arched spring piece can only fix the side of the COC chip, which can effectively protect the functional surface of the COC chip, which is conducive to improving product quality.

[0004] The above-mentioned method of clamping the chip by pressing the spring clip is that the spring clip is only pressed by the clamping block. After a long period of use, the spring clip will gradually fatigue. When the spring clip is fatigued and cannot squeeze and clamp the chip well, it will cause the chip to be unstable, which will easily affect the accuracy of the chip test. At this time, it is necessary to regularly observe and open the fixture to replace part or all of the spring clips, which increases the intensity of maintenance and is more troublesome. In addition, when the spring clip is clamping the chip, the spring clip will only apply a side clamping force to the chip. When the fixture is flipped, the chip is at risk of falling. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] The present invention is proposed in view of the problem that the spring pieces of the above-mentioned test fixture are prone to fatigue and irreversibility during long-term clamping, and cannot clamp the chip well, thus affecting the chip test accuracy.

[0007] Therefore, the object of the present invention is to provide a COC fishbone chip testing fixture.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: A COC fishbone chip test fixture, comprising a cover plate, a main body plate, a positioning plate and a bottom plate, wherein the main body plate, the positioning plate and the bottom plate are tightened together by screws; A fixed plate is placed between the main body plate and the positioning plate, the oblique groove of the fixed plate is movably connected with a rotating plate through a pin shaft, the rotating plate is connected to the movable plate through a pin shaft, a slide groove is provided at the oblique groove of the fixed plate, and the other end of the movable plate is embedded in the slide groove through the pin shaft, a slider is installed on the inner wall of the slide groove, a clamping block is installed on the outer wall of the slider, a fixing piece is movably connected with the connecting part of the movable plate and the rotating plate, and the fixing piece is fixedly connected to the convex part of the cover plate.

[0009] As a preferred solution of the COC fishbone chip test fixture of the present invention, the slider is located on one side of the movable plate, and the slider and the movable plate are movably connected to the sleeve block through a pin shaft.

[0010] As a preferred solution of the COC fishbone chip test fixture described in the present invention, a soft pad is installed on the top of the base plate, a connecting hole is opened inside the base plate, and when the positioning plate is connected to the base plate, the soft pad is embedded in the chip positioning position of the positioning plate.

[0011] As a preferred solution of the COC fishbone chip testing fixture described in the present invention, wherein: the outer wall of one side of the rotating plate is movably connected with a hollow column through a pin shaft, a piston block is installed on the inner wall of the hollow column, a pull rod is installed on the outer wall of the piston block, and one end of the pull rod extends out of the other end of the hollow column, and the extended end of the pull rod is movably connected to the outer wall of the movable plate through a pin shaft, a flow column is installed on the inner wall of the hollow column, and a touch pressure piece is installed on the inner wall of the hollow column.

[0012] As a preferred solution of the COC fishbone chip testing fixture of the present invention, an extension rod is installed on the outer wall of the piston block, a touch arc plate is installed on one end of the extension rod, and a pull rope is installed on the outer wall of the touch arc plate.

[0013] As a preferred solution of the COC fishbone chip testing fixture described in the present invention, wherein: the inner wall of the flow column is installed with a fixing ring, the fixing ring has an inclined surface facing the flow tube, the outer wall of the fixing ring is installed with a blocking piece, the upper end of the blocking piece is bonded to the upper end of the fixing ring, and the blocking piece fits with the inclined surface of the fixing ring in a natural state, the flow column is connected to the flow tube, and one end of the flow tube is connected to the fixed plate.

[0014] As a preferred solution of the COC fishbone chip testing fixture described in the present invention, the touch-pressure part includes a movable shaft installed on the inner wall of the hollow column, a pushing inclined rod is installed on the outer wall of the movable shaft, a guide plate connected to the inner wall of the hollow column is installed on one side of the pushing inclined rod, a touch-pressure rod is installed through the inner wall of the guide plate, and the axis of the touch-pressure rod is consistent with the axis of the circulation column.

[0015] As a preferred solution of the COC fishbone chip testing fixture described in the present invention, the extension rod extends to the other side of the pushing diagonal rod, and the extended end of the extension rod is close to the end of the flow column, and the pull rope is connected to one end of the pushing diagonal rod.

[0016] As a preferred solution of the COC fishbone chip test fixture described in the present invention, when the blocking piece is fitted with the fixing ring, the center hole of the fixing ring is blocked, and when the fixing plate and the bottom plate are spliced, the flow tube is connected to the flow hole accordingly.

[0017] Beneficial Effects Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The cover plate is connected to the clamping mechanism. When the cover plate is connected to or separated from the main plate, the clamping mechanism is driven to clamp the chip, making the clamping mechanism more durable and unnecessary to be frequently disassembled; Third, when clamping, the clamping mechanism can also make the bottom plate absorb the chip with negative pressure, so that the chip is fixed in the lateral and vertical directions, which improves the clamping effect of the chip and makes it difficult for the chip to fall even if the test fixture is turned over. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 This is an overall schematic diagram of a COC herringbone chip test fixture.

[0020] Figure 2 A schematic diagram of the disassembly of a COC herringbone chip test fixture.

[0021] Figure 3 for Figure 2 Enlarged view of point A in .

[0022] Figure 4 A schematic diagram of a fixing plate for a COC herringbone chip test fixture.

[0023] Figure 5 Schematic diagram of a rotating plate of a COC herringbone chip test fixture.

[0024] Figure 6 for Figure 2 Enlarged view of point B in .

[0025] Figure 7 A schematic diagram of a hollow column of a COC herringbone chip test fixture.

[0026] Figure 8 for Figure 7 Enlarged view of point C in the figure.

[0027] 1. Cover plate; 11. Main body plate; 12. Positioning plate; 13. Bottom plate; 131. Cushion; 132. Connecting hole; 2. Fixed plate; 21. Rotating plate; 211. Hollow column; 212. Piston block; 2121. Extension rod; 2122. Contact arc plate; 2123. Pull rope; 213. Pull rod; 214. Circulation column; 2141. Fixed ring; 2142. Blocking plate; 2143. Circulation tube; 215. Contact piece; 2151. Movable shaft; 2152. Push diagonal rod; 2153. Guide plate; 2154. Contact rod; 22. Moving plate; 23. Slide groove; 24. Slider; 25. Clamping block; 26. Fixed piece. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0032] Example 1 Reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides a COC fishbone chip test fixture, including a cover plate 1, a main body plate 11, a positioning plate 12 and a bottom plate 13, wherein the main body plate 11, the positioning plate 12, the bottom plate 13 and the fixed plate 2 are connected as a whole by screws, at which time the clamping block 25 is embedded in the positioning groove of the positioning plate 12, and the bottom of the clamping block 25 is in contact with the top of the bottom plate 13. When all the chips are placed in the positioning plate 12, the main body plate 11 and the cover plate are moved and tightened by turning the screws, so that the cover plate 1 contacts and presses the components on the fixed plate 2; a fixed plate 2 is placed between the main body plate 11 and the positioning plate 12, and a rotating plate 21 is movably connected to the oblique groove of the fixed plate 2 through a pin shaft, and the rotating plate 21 is connected to the fixed plate 2 through a pin shaft. A movable plate 22 is connected, a slide groove 23 is opened at the oblique groove of the fixed plate 2, and the other end of the movable plate 22 is embedded in the interior of the slide groove 23 through a pin shaft, a slider 24 is installed on the inner wall of the slide groove 23, and a clamping block 25 is installed on the outer wall of the slider 24. The connection between the rotating plate 21 and the movable plate 22 is arched toward the convex part of the cover plate 1, and the connection is connected to the convex part of the cover plate 1 through a fixing piece 26. When the main plate 11 and the cover plate 1 move relatively, the cover plate 1 presses the arched parts of the rotating plate 21 and the movable plate 22 through the fixing piece 26. At this time, the movable plate 22 moves along the slide groove 23, and the movable plate 22 pushes the slider 24 to slide. The movement of the slider 24 drives the clamping block 25 to move, so that the clamping block 25 clamps the chip in the positioning piece 12.

[0033] Specifically, the slider 24 is located on one side of the moving plate 22 , and the slider 24 and the moving plate 22 are movably connected via a pin shaft and a sleeve block, so that the moving state of the moving plate 22 only pushes and pulls the slider 24 to translate.

[0034] Operation process: During installation, the main plate 11, the fixed plate 2, the positioning plate 12 and the bottom plate 13 are connected together in sequence by screws, and the cover plate 1 is connected to the main plate 11 by screws, and the arches of the rotating plate 21 and the movable plate 22 on the fixed plate 2 are fixedly connected to the convex part of the cover plate 1 by the fixing parts 26. When the screws are tightened to drive the cover plate 1 and the main plate 11 to move relative to each other, the fixing parts 26 on the cover plate 1 gradually squeeze the arches of the rotating plate 21 and the movable plate 22, so that the other end of the movable plate 22 translates along the slide groove 23. At this time, the movable plate 22 pushes the clamping block 25 on the slider 24 to translate, and the clamping block 25 clamps the chip and positions it on the positioning plate 12. The clamping mechanism of this structure positions the chip through the cooperation of multiple groups of movable parts, which will not cause fatigue and improve the service life of the chip test fixture.

[0035] Example 2 Reference Figure 5-Figure 8, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that a soft pad 131 is installed on the top of the bottom plate 13, and a connecting hole 132 is opened inside the bottom plate 13. When the positioning piece 12 is connected to the bottom plate 13, the soft pad 131 is embedded in the chip positioning position of the positioning piece 12, and the soft pad 131 fits with the bottom of the chip.

[0036] Specifically, the outer wall of one side of the rotating plate 21 is movably connected with a hollow column 211 through a pin, a piston block 212 is installed on the inner wall of the hollow column 211, a pull rod 213 is installed on the outer wall of the piston block 212, and one end of the pull rod 213 extends out of the other end of the hollow column 211, and the extended end of the pull rod 213 is movably connected to the outer wall of the moving plate 22 through a pin, a flow column 214 is installed on the inner wall of the hollow column 211, and a contact pressure piece 215 is installed on the inner wall of the hollow column 211. When the moving plate 22 moves, the distance between the moving plate 22 and the rotating plate 21 gradually expands. At this time, the pull rod 213 pulls the piston block 212 to move. When the piston block 212 moves on the hollow column 211, its flow column 214 is closed. At this time, with the movement of the piston block 212, the inside of the hollow column 211 gradually increases the negative pressure. When the clamping block 25 clamps the chip, its contact piece 215 opens, so that the hollow column 211, the flow tube 2143, and the connecting hole 132 are in a negative pressure state, so that the bottom of the chip is adsorbed on the soft pad 131 by the negative pressure, so that the chip is not easy to fall even when the fixture is turned over, thereby improving the fixing effect of the chip.

[0037] Furthermore, an extension rod 2121 is installed on the outer wall of the piston block 212, and a touch arc plate 2122 is installed on one end of the extension rod 2121. A pull rope 2123 is installed on the outer wall of the touch arc plate 2122. The extension rod 2121 extends to the other side of the pushing inclined rod 2152, and the extended end of the extension rod 2121 is close to the end of the circulation column 214. The pull rope 2123 is connected to one end of the pushing inclined rod 2152. The movement of the piston block 212 drives the touch arc plate 2122 of the extension rod 2121 to move. When the clamping block 25 is about to clamp the chip, the touch arc plate 2122 is pressed on the touch component 215.

[0038] Furthermore, a fixing ring 2141 is installed on the inner wall of the circulation column 214, a blocking piece 2142 is placed on one side of the fixing ring 2141, the circulation column 214 is connected to a circulation tube 2143, and one end of the circulation tube 2143 is connected to the fixing plate 2, when the blocking piece 2142 is fitted with the fixing ring 2141, the center hole of the fixing ring 2141 is blocked, when the fixing plate 2 and the bottom plate 13 are spliced, the circulation tube 2143 is connected to the circulation hole correspondingly, when the chip is clamped, the pull rod 213 pulls the piston block 212 to move toward the end of the pull rod 213, and at this time, the blocking piece 2142 naturally droops on the inclined surface of the fixing ring 2141 At this time, the circulation column 214 is in a locked state. As the piston block 212 moves, the negative pressure inside the hollow column 211 gradually increases. When the clamping block 25 clamps the chip, its contact arc plate 2122 contacts and presses one end of the inclined rod 2152, so that the other end of the inclined rod 2152 contacts and presses the contact rod 2154 on the guide plate 2153. The contact rod 2154 is embedded in the circulation column 214 and lifts the blocking plate 2142, so that the circulation column 214 is opened, so that its hollow column 211, the circulation tube 2143, and the connecting hole 132 are in a negative pressure state, so that the bottom of the chip is adsorbed on the soft pad 131 by the negative pressure.

[0039] Furthermore, the touch-pressure member 215 includes a movable shaft 2151 installed on the inner wall of the hollow column 211, a pushing inclined rod 2152 is installed on the outer wall of the movable shaft 2151, a guide plate 2153 connected to the inner wall of the hollow column 211 is installed on one side of the pushing inclined rod 2152, a touch-pressure rod 2154 is installed through the inner wall of the guide plate 2153, and the axis of the touch-pressure rod 2154 is consistent with the axis of the circulation column 214, the touch-pressure arc plate 2122 touches and presses one end of the pushing inclined rod 2152, so that the other end of the touch-pressure inclined rod touches and presses the touch-pressure rod 2154 on the guide plate 2153, and the touch-pressure rod is embedded in the circulation column 214 and lifts up the blocking plate 2142, so that the circulation column 214 is opened.

[0040] The rest of the structure is the same as that of Example 1.

[0041] Operation process: when the movable plate 22 moves, the distance between the movable plate 22 and the rotating plate 21 gradually increases. At this time, the pull rod 213 pulls the piston block 212 to move, and the pull rod 213 pulls the piston block 212 to move toward the end of the pull rod 213. At this time, the blocking piece 2142 naturally hangs on the inclined surface of the fixed ring 2141. At this time, the circulation column 214 is in a locked state. At this time, as the piston block 212 moves, the negative pressure gradually increases. When the clamping block 25 clamps the chip, its contact arc plate 2122 contacts and presses one end of the pushing inclined rod 2152, so that the other end of the pushing inclined rod 2152 contacts and presses the contact rod 2154 on the guide plate 2153, and the contact rod is embedded in the circulation column 214 and lifted up. The sealing piece 2142 opens the flow column 214, so that the hollow column 211, the flow tube 2143 and the connecting hole 132 are in a negative pressure state, so that the bottom of the chip is adsorbed on the soft pad 131 by the negative pressure, so that the chip is not easy to fall when the fixture is turned over, thereby improving the fixing effect of the chip. After the chip test is completed, the cover plate 1 is separated from the main plate 11. At this time, the distance between the rotating plate 21 and the movable plate 22 is reduced again, so that the air pressure in the hollow column 211 gradually returns to normal, and at this time, the touch pressure arc plate 2122 restores the touch pressure oblique rod through the pull rope 2123, so that the touch pressure rod 2154 does not affect the subsequent fit between the sealing piece 2142 and the fixing ring 2141.

[0042] Working principle: During installation, the main plate 11, the fixed plate 2, the positioning plate 12 and the bottom plate 13 are connected in sequence by screws, and the cover plate 1 is connected to the main plate 11 by tightening the screws when the chip is clamped and fixed. The arched parts of the rotating plate 21 and the movable plate 22 on the fixed plate 2 are fixedly connected to the convex part of the cover plate 1 through the fixing parts 26. When the cover plate 1 and the main plate 11 move relative to each other, the fixing parts 26 on the cover plate 1 gradually squeeze the arched parts of the rotating plate 21 and the movable plate 22. The other end of the moving plate 22 moves along the slide groove 23. At this time, the moving plate 22 pushes the clamping block 25 on the slider 24 to move horizontally. The clamping block 25 clamps the chip on the positioning plate 12. In the process of clamping the chip, the angle between the moving plate 22 and the rotating plate 21 gradually increases. At this time, the pull rod 213 pulls the piston block 212 to move toward the end of the pull rod 213. At this time, the blocking piece 2142 naturally hangs down on the inclined surface of the fixing ring 2141. At this time, the circulation column 21 4 is in the locked state. As the piston block 212 moves, the negative pressure inside the hollow column 211 gradually increases. When the clamping block 25 clamps the chip, its contact arc plate 2122 contacts and presses one end of the pushing inclined rod 2152, so that the other end of the pushing inclined rod 2152 contacts and presses the contact rod 2154 on the guide plate 2153. The contact rod 2154 is embedded in the flow column 214 and lifts the blocking piece 2142, so that the flow column 214 is opened, so that the hollow column 211 and the flow pipe are closed. 2143 and the connecting hole 132 are in a negative pressure state, so that the bottom of the chip is adsorbed on the soft pad 131 by the negative pressure, so that the chip is not easy to fall when the chip test fixture is turned over, and when the chip test is completed, as the cover plate 1 moves up and opens, its piston block 212 moves to the side of the circulation tube 2143, at this time, the negative pressure in the hollow column 211 gradually returns to normal, and during the recovery process, its sealing piece 2142 can naturally rise without affecting the recovery of the air pressure at the end of the circulation tube 2143.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A COC fishbone chip test fixture, comprising a cover plate (1), a main plate (11), a positioning plate (12) and a bottom plate (13), characterized in that: The main plate (11), the positioning plate (12) and the bottom plate (13) are fastened together by screws; A fixed plate (2) is placed between the main body plate (11) and the positioning plate (12); the oblique groove of the fixed plate (2) is movably connected to a rotating plate (21) via a pin; the rotating plate (21) is connected to a movable plate (22) via a pin; a slide groove (23) is provided at the oblique groove of the fixed plate (2); the other end of the movable plate (22) is embedded in the slide groove (23) via a pin; a slider (24) is installed on the inner wall of the slide groove (23); a clamping block (25) is installed on the outer wall of the slider (24); a fixing piece (26) is movably connected to the connecting part of the movable plate (22) and the rotating plate (21); the fixing piece (26) is fixedly connected to the convex part of the cover plate (1).

2. The COC herringbone chip test fixture as claimed in claim 1, characterized in that: The slider (24) is located on one side of the movable plate (22), and the slider (24) and the movable plate (22) are movably connected via a pin shaft and a sleeve block.

3. The COC fishbone chip test fixture as claimed in claim 2, characterized in that: A soft pad (131) is installed on the top of the bottom plate (13), a communicating hole (132) is provided inside the bottom plate (13), and when the positioning piece (12) is connected to the bottom plate (13), the soft pad (131) is embedded in the chip positioning portion of the positioning piece (12).

4. The COC fishbone chip test fixture as claimed in claim 3, characterized in that: The outer wall of one side of the rotating plate (21) is movably connected to a hollow column (211) via a pin shaft, a piston block (212) is installed on the inner wall of the hollow column (211), a pull rod (213) is installed on the outer wall of the piston block (212), and one end of the pull rod (213) extends out of the other end of the hollow column (211), and the extended end of the pull rod (213) is movably connected to the outer wall of the movable plate (22) via a pin shaft, a circulation column (214) is installed on the inner wall of the hollow column (211), and a pressure contact member (215) is installed on the inner wall of the hollow column (211).

5. The COC fishbone chip test fixture as claimed in claim 4, characterized in that: An extension rod (2121) is installed on the outer wall of the piston block (212), a contact arc pressure plate (2122) is installed on one end of the extension rod (2121), and a pull rope (2123) is installed on the outer wall of the contact arc pressure plate (2122).

6. The COC herringbone chip test fixture as claimed in claim 5, characterized in that: The inner wall of the circulation column (214) is provided with a fixing ring (2141), the side of the fixing ring (2141) facing the circulation tube (2143) is an inclined surface, the outer wall of the fixing ring (2141) is provided with a blocking piece (2142), the upper end of the blocking piece (2142) is bonded to the upper end of the fixing ring (2141), the blocking piece (2142) is in a natural state in contact with the inclined surface of the fixing ring (2141), the circulation column (214) is connected to the circulation tube (2143), and one end of the circulation tube (2143) is connected to the fixing plate (2).

7. The COC herringbone chip test fixture as claimed in claim 6, characterized in that: The touch-pressure member (215) comprises a movable shaft (2151) installed on the inner wall of the hollow column (211); a pushing inclined rod (2152) is installed on the outer wall of the movable shaft (2151); a guide plate (2153) connected to the inner wall of the hollow column (211) is installed on one side of the pushing inclined rod (2152); a touch-pressure rod (2154) is installed through the inner wall of the guide plate (2153); and the axis of the touch-pressure rod (2154) is consistent with the axis of the circulation column (214).

8. The COC herringbone chip test fixture as claimed in claim 7, characterized in that: The extension rod (2121) extends to the other side of the pushing diagonal rod (2152), and the extended end of the extension rod (2121) is close to the end of the circulation column (214), and the pull rope (2123) is connected to one end of the pushing diagonal rod (2152).

9. The COC herringbone chip test fixture as claimed in claim 8, characterized in that: When the blocking piece (2142) is fitted with the fixing ring (2141), the central hole of the fixing ring (2141) is blocked, and when the fixing plate (2) and the bottom plate (13) are spliced, the circulation tube (2143) is connected to the circulation hole accordingly.

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