Chip positioning jig and positioning method thereof

Abstract

The invention discloses a chip positioning jig, and relates to the technical field of chip processing, the chip positioning jig comprises a bearing plate and a working table, the bearing plate is used for storing chips, the working table is used for installing the bearing plate, a plurality of accommodating holes are uniformly distributed in the bearing plate at intervals, the accommodating holes are stepped holes, the chips are arranged in the accommodating holes, and the working table is arranged on the working table. A containing hole is formed in the workbench, a jacking structure is installed below the containing hole and comprises a jacking column, the jacking column is located below the bearing plate, the top of the jacking column is located at the bottom of the containing hole, the jacking column makes contact with the bottom end of the chip, four round holes are formed in the workbench in a quadrilateral mode, and four positioning columns are installed on the workbench. The four positioning columns are installed in the round holes, grooves are formed in the positioning columns, the bearing plate is movably installed in the grooves, and springs are installed between the bearing plate and the grooves.

Description

Technical Field

[0001] The invention belongs to the technical field of chip processing, and in particular relates to a chip positioning fixture and a positioning method thereof. Background Art

[0002] The chip manufacturing process is a complex and sophisticated process, which is mainly divided into the following key steps: wafer manufacturing - photolithography and etching - ion implantation and thin film deposition - annealing and cleaning - packaging and testing. Packaging is to fix the manufactured chip on the packaging substrate and connect the pins to protect the chip and provide a connection interface with the external circuit. An indispensable tool in this process is the chip fixture.

[0003] For example, a Chinese invention patent document with the announcement number CN105154824B discloses a chip sputtering fixture and a method for chip sputtering using the fixture, which includes a base paper layer and a double-sided adhesive layer, wherein the base paper layer includes an upper base paper and a lower base paper, a double-sided adhesive layer is arranged between the upper base paper and the lower base paper, and square through holes are arranged on the base paper layer and the double-sided adhesive layer, each through hole corresponds to a chip placement area, and the size of the through hole corresponds to the size of the chip, and positioning holes are arranged on the base paper layer and the double-sided adhesive layer.

[0004] Another example is a Chinese utility model patent document with a publication number of CN215728615U, which discloses a chip test positioning fixture, including a positioning plate, on which a product placement area is provided, characterized in that: a cover plate is also provided, and the cover plate is detachably mounted on the positioning plate above the product placement area; a vertical plate is respectively provided at the front and rear ends of the top of the positioning plate, and each group of the vertical plates is provided with an L-shaped limit opening, and a limit mechanism is provided at the top of the cover plate, and the limit mechanism is rotatably connected to the top of the cover plate; when the cover plate is installed on the positioning plate, the bottom surface of the cover plate abuts against the top surface of the positioning plate, and the two ends of the limit mechanism are respectively clamped in the L-shaped limit openings of the two groups of the vertical plates. The utility model improves the positioning efficiency and quality of the product, and also improves the testing stability and quality of the product.

[0005] In the process of chip processing, such as chip sputtering, chip testing, etc., the most commonly used tool is the jig. In the existing jig structure, a positioning hole is usually opened on the carrier plate. The size of the positioning hole matches the size of the chip. Then, after the chip is placed in the positioning hole, a certain force is applied to it before other operations are performed. The process of placing the chip into the positioning hole requires manual operation of the chip to ensure that each chip is placed in the positioning hole and is placed in the correct position. When multiple positioning holes are placed at one time, this process takes a long time and is inefficient. Therefore, it is necessary to design a fast and accurate chip jig to ensure that the chip is placed in the positioning hole quickly and accurately. Summary of the invention

[0006] In view of the above problems in the prior art, an object of the present invention is to provide a chip positioning fixture and a positioning method thereof.

[0007] The present invention provides the following technical solutions:

[0008] A chip positioning fixture comprises a carrier plate and a workbench, wherein the carrier plate is used to store chips, and the workbench is used to install the carrier plate. The carrier plate is provided with a plurality of accommodating holes evenly spaced at intervals, and the accommodating holes are stepped holes, in which the chips are placed, and a lifting structure is installed below the accommodating holes, wherein the lifting mechanism comprises a top column, which is located below the carrier plate, and the top of the top column is located at the bottom of the accommodating hole, and the top column contacts the bottom end of the chip, and the workbench is provided with four circular holes, which are arranged on the workbench in a quadrilateral shape, and four positioning columns are installed on the workbench, which are installed in the circular holes, and grooves are provided in the positioning columns, and the carrier plate is movably installed in the groove, and a spring is installed between the carrier plate and the groove.

[0009] As a further technical solution, four mounting holes are opened on the workbench, and the four mounting holes are arranged on the diagonals of the workbench. A limiting mechanism is installed on the workbench, and the limiting mechanism is installed on one of the diagonals of the workbench. The limiting mechanism includes a block. Two electric slide rails are installed on the workbench, and the two electric slide rails are diagonally distributed on the workbench. A slide is slidably connected to the electric slide rails, and push rods are symmetrically installed on the opposite surfaces of the slide. The block is installed at one end of the push rod, and the distance between the two push rods on the same slide is greater than the diameter of the positioning column. When the load-bearing plate is in a fixed state, one end of the block is close to the load-bearing plate.

[0010] As a further technical solution, the jacking structure also includes a lower moving plate, a jacking motor is installed on the lower moving plate, an intermediate shaft is installed at the output end of the jacking motor, the intermediate shaft passes through the workbench and is installed with a jacking plate, a plurality of cross plates are evenly welded on the jacking plate, the jacking column is installed on the cross plate, and the position of the jacking column corresponds to the position of the accommodating hole.

[0011] As a further technical solution, the four corners of the lower movable plate are slidably connected with limit rods, and the top end of the limit rods is connected to the bottom end of the workbench.

[0012] As a further technical solution, an upper pressure plate module is installed on the positioning column, and the upper pressure plate module includes a movable plate and a fixed plate. A motor hole is opened in the positioning column, and a main motor is installed in the motor hole. A threaded rod is installed on the main motor, and a fixed plate is threadedly connected to four threaded rods. Matching holes are opened on the fixed plate, and the threaded rods and the matching holes are threadedly connected. A movable plate is hinged on the opposite surface of the fixed plate, and an upper pressure plate is installed at the bottom end of the movable plate, and the bottom end of the upper pressure plate is completely in contact with the top end of the load-bearing plate.

[0013] As a further technical solution, the four threaded rods are also threadedly connected with an upper linkage plate, and a lower boss is installed at the bottom end of the upper linkage plate. The upper linkage plate and the lower boss are located above the fixed plate, and the threads of the upper linkage plate and the fixed plate have opposite rotation directions, that is, when the threaded rods rotate, the upper linkage plate and the fixed plate move relative to or away from each other, and a chip scraper roller is movably installed on the lower boss.

[0014] As a further technical solution, a movable groove is opened in the lower boss, a round block is slidably connected in the movable groove, a mounting frame is installed on the round block, the chip scraper roller is installed at the bottom of the mounting frame, a transverse cylinder is installed at one end of the movable groove, a straight hole is opened in the chip scraper roller, and the output end of the transverse cylinder is located in the straight hole.

[0015] As a further technical solution, a sliding hole is opened in the lower boss and the sliding hole is connected to the movable groove. A vertical cylinder is installed on the lower boss, and the bottom end of the vertical cylinder is clamped with the round block. A fixed magnetic block is installed in the sliding hole, and a movable magnetic block is magnetically attracted to the fixed magnetic block. A magnet attraction block is installed at the output end of the horizontal cylinder, and the height of the movable magnetic block is greater than the diameter of the straight hole.

[0016] As a further technical solution, a pressing area is provided on the lower boss, and the bottom end of the pressing area is completely in contact with the top end of the supporting plate.

[0017] A positioning method for a chip positioning fixture comprises the following steps:

[0018] Step 1: The electric slide rail pushes the slide table to the center of the workbench, that is, the stopper moves toward the outer wall of the carrier plate until the stopper fits tightly against the carrier plate;

[0019] Step 2: pour a large number of chips onto the carrier plate, then apply pressure to the carrier plate, and shake the carrier plate by manpower or robot operation, so that the carrier plate shakes relative to the positioning column, so that the chips on the end surface of the carrier plate that have not fallen into the receiving hole fall into the receiving hole by shaking;

[0020] The lifting motor pushes up the lifting plate and the horizontal plate, so that the lifting pillar on the horizontal plate contacts the chip, so that there is a space margin between the chip and the receiving hole. Then the lifting motor pulls down the lifting plate and the horizontal plate, so that the lifting pillar is separated from the receiving hole. At this time, the chip falls into the receiving hole again by its own gravity. The action of pushing up and pulling down the lifting pillar is repeated until the four sides of the chip are completely attached to the hole wall of the receiving hole.

[0021] Step 4:

[0022] Method 1: The main motor drives the threaded rod to rotate, and the fixed plate moves downward, so that the top surface of the upper pressing plate contacts the chip, and the chip is further pressed into the receiving hole;

[0023] Method 2: The main motor drives the threaded rod to rotate, the fixed plate moves upward, and the upper linkage plate moves downward. While the fixed plate moves, the two movable plates hinged on the fixed plate flip downward, so that the bottom of the lower boss passes through the fixed plate and contacts the top surface of the chip. The vertical cylinder pushes the round block downward to push the scraper roller out of the sliding hole, that is, the scraper roller contacts the top surface of the carrier plate. The surface of the scraper roller is a soft brush. The output end of the horizontal cylinder passes through the straight hole, so that the output end of the horizontal cylinder and the movable magnetic block are magnetically attracted to each other, so that the movable magnetic block is separated from the fixed magnetic block, and the movable magnetic block is separated from the fixed magnetic block. The block clamps the round block, so that the round block is separated from the output end of the vertical cylinder, and the scraper roller moves back and forth. Then, the output end of the vertical cylinder is inserted into the round block again, and the round block has a clamping structure to connect it with the vertical cylinder. The output end of the horizontal cylinder pushes the movable magnetic block to the fixed magnetic field, and the fixed magnetic field magnetically attracts the movable magnetic block. The output end of the horizontal cylinder is separated from the straight hole, and the round block is pulled into the sliding hole through the vertical cylinder. The main motor works again, so that the lower boss moves down again, and the lower pressing area contacts the chip to press the chip into the receiving hole again.

[0024] Step 5: After a chip is placed in each receiving hole of the carrier plate, remove the pressure applied to the carrier plate to restore the carrier plate to a horizontal state, and push the block toward the carrier plate again through the electric slide rail and the slide table so that the block fits the carrier plate again.

[0025] The beneficial effects of the present invention are:

[0026] The receiving holes are evenly arranged on the carrier plate, and the chips are placed in the receiving holes. The position of the chips is limited by the receiving holes. The receiving holes are stepped holes, so that the receiving holes can accommodate chips of different sizes, and the positioning of chips of different sizes is completed, which expands the use range of the positioning fixture.

[0027] A limit mechanism is installed on the workbench to fix the position of the load-bearing plate in the initial position and when the load-bearing plate is restored to a horizontal state after shaking, and not shaken by external forces, so as to ensure that the load-bearing plate is always on the same line with the center of the workbench after the position is fixed;

[0028] A lifting structure is installed below the receiving hole. The lifting mechanism includes a lifting column. The position of the chip in the receiving hole can be adjusted by the lifting column. The chip in the receiving hole can be turned over. The lifting column is repeatedly pushed up and pulled down until the four sides of the chip are completely attached to the hole wall of the receiving hole, which reduces the time of manual operation of the chip position and improves work efficiency.

[0029] In addition to applying a bottom-up force to make the chip fall perfectly into and out of the receiving hole, an upper pressure plate module is installed on the positioning column. After using the top column to adjust the position of the chip, the upper pressure plate module applies a top-down force to the chip again, so that the chip is close to the receiving hole, once again ensuring the position of the chip in the receiving hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a schematic diagram of the axonometric structure of the present invention. Figure 1 ;

[0032] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the axonometric structure of the present invention. Figure 2 ;

[0034] Figure 4 It is a schematic diagram of the main structure of the upper pressing plate module of the present invention;

[0035] Figure 5 It is a schematic diagram of the installation structure of the movable plate and the fixed plate of the present invention;

[0036] Figure 6 It is a schematic diagram of the internal structure of the lower boss of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the positional relationship between the transverse cylinder and the movable magnetic block of the present invention;

[0038] Figure 8 It is a left-side structural schematic diagram of the round block and the mounting frame of the present invention.

[0039] The markings in the figure are: 100, workbench; 101, mounting hole; 103, positioning column; 104, groove; 105, spring; 106, round hole; 107, motor hole; 200, bearing plate; 201, receiving hole; 300, limit mechanism; 301, electric slide rail; 302, slide; 303, push rod; 304, stopper; 305, top column; 400, lifting structure; 401, cross plate; 402, intermediate shaft; 403, lifting plate; 404, lower moving plate; 405, lifting Cylinder; 406, limit rod; 500, upper pressure plate module; 501, movable plate; 502, matching hole; 503, fixed plate; 504, main motor; 505, upper linkage plate; 506, chip scraper roller; 507, lower boss; 508, threaded rod; 509, round block; 510, vertical cylinder; 511, sliding hole; 512, mounting frame; 513, movable groove; 514, lower pressure area; 515, fixed magnetic block; 516, movable magnetic block; 517, horizontal cylinder; 518, straight hole. DETAILED DESCRIPTION

[0040] like Figure 1As shown, the present invention provides a chip positioning fixture, including a carrier plate 200 and a workbench 100, the carrier plate 200 is used to store chips, the workbench 100 is used to install the carrier plate 200, a plurality of accommodating holes 201 are evenly spaced on the carrier plate 200, and the chip is placed in the accommodating holes 201. When working, the chip is placed in the corresponding accommodating hole 201, and the position of the chip is limited by the accommodating hole 201.

[0041] Embodiment 1

[0042] like Figure 1 As shown, the receiving hole 201 on the carrier plate 200 is designed as a stepped hole, the purpose of which is to enable the receiving hole 201 to accommodate chips of different sizes, complete the positioning of chips of different sizes, and expand the use range of the positioning fixture.

[0043] like Figure 1 and Figure 2 As shown, the workbench 100 is provided with four mounting holes 101, which are arranged on the diagonal lines of the workbench 100 and are used for mounting the workbench 100 and external devices. The workbench 100 is also provided with four circular holes 106, which are arranged in a quadrilateral shape on the workbench 100. Four positioning columns 103 are installed on the workbench 100, and the four positioning columns 103 are installed in the circular holes 106. The bearing plate 200 is installed on the four positioning columns 103. Further, as shown in FIG. Figure 3 As shown, a groove 104 is defined in the positioning column 103 , the supporting plate 200 is movably mounted in the groove 104 , and a spring 105 is mounted between the supporting plate 200 and the groove 104 .

[0044] Specifically, the four corners of the carrier plate 200 and the spring 105 are all located in the groove 104, and the top end surface and the bottom end surface of the carrier plate 200 are both installed with springs 105. During operation, the initial position of the carrier plate 200 is horizontal, a large number of chips are poured onto the carrier plate 200, and then pressure is applied to the carrier plate 200 (by manpower or robot operation to make the carrier plate 200 shake), so that the carrier plate 200 shakes relative to the positioning column 103, so that the chips on the end surface of the carrier plate 200 that have not fallen into the receiving hole 201 are shaken to fall into the receiving hole 201, and after each receiving hole 201 of the carrier plate 200 is filled with a chip, the pressure applied to the carrier plate 200 is removed to restore the carrier plate 200 to a horizontal state.

[0045] Embodiment 2

[0046] On the basis of the above-mentioned embodiment 1, in order to ensure that the position of the carrier plate 200 is fixed in the initial position (before tipping over the chip) and when the carrier plate 200 is restored to a horizontal state after shaking (after the chip is loaded), the carrier plate 200 is not shaken by external forces, such as Figure 2As shown, a limiting mechanism 300 is installed on the workbench 100, and the limiting mechanism 300 is installed on one of the diagonals of the workbench 100. The limiting mechanism 300 includes a stopper 304. Two electric slide rails 301 are installed on the workbench 100, and the two electric slide rails 301 are diagonally distributed on the workbench 100. A slide table 302 is slidably connected to the electric slide rail 301, and push rods 303 are symmetrically installed on the opposite surface of the slide table 302. The stopper 304 is installed at one end of the push rod 303. The distance between the two push rods 303 on the same slide table 302 is greater than the diameter of the positioning column 103. When the supporting plate 200 is in a fixed state, one end of the stopper 304 is close to the supporting plate 200.

[0047] Before pouring the chips into the carrier plate 200, the electric slide rail 301 pushes the slide 302 to the center of the workbench 100, that is, the stopper 304 moves toward the outer wall of the carrier plate 200 until the stopper 304 is tightly fitted to the carrier plate 200. The purpose of arranging the limit mechanism 300 on the diagonal line is to reduce the power drive. The two electric slide rails 201 on the diagonal line of the workbench 100 can be used to position the carrier plate 200, which is easy to operate and ensures that the carrier plate 200 is always on the same line as the center of the workbench 100 after the position is fixed. Online, when it is necessary to apply external force to the carrier plate 200 to make it swing, the electric slide rail 301 moves the slide table 302 in the direction of moving the stop block 304 away from the carrier plate 200. After a chip is placed in each accommodating hole 201 of the carrier plate 200 and the swinging force applied to the carrier plate 200 is removed, the stop block 304 is pushed toward the carrier plate 200 again by the electric slide rail 301 and the slide table 302, so that the stop block 304 is again attached to the carrier plate 200. The diagonally arranged stop blocks 304 can also ensure that the carrier plate 200 is in a horizontal state.

[0048] Embodiment 3

[0049] Based on the above-mentioned embodiment 2, Figure 3 As shown, a lifting structure 400 is installed below the receiving hole 201. The lifting mechanism 400 includes a lifting column 305. The lifting column 305 moves up and down in the receiving hole 201 to adjust the position of the chip in the receiving hole 201, and the chip in the receiving hole 201 can be turned over.

[0050] Specifically, the lifting structure 400 also includes a lower movable plate 404, and the four corners of the lower movable plate 404 are slidably connected with a limit rod 406, the top of the limit rod 406 is connected to the bottom end of the workbench 100, and a lifting motor 405 is installed on the lower movable plate 404. The output end of the lifting motor 405 is installed with an intermediate shaft body 402, and the intermediate shaft body 402 passes through the workbench 100 and is installed with a lifting plate 403. A plurality of cross plates 401 are evenly welded on the lifting plate 403, and a top column 305 is installed on the cross plate 401. The top column 305 is located below the supporting plate 200, and the top of the top column 305 is located at the bottom of the accommodating hole 201. The top column 305 contacts the bottom end of the chip, and the position of the top column 305 corresponds to the position of the accommodating hole 201.

[0051] Since the chip falls freely into the receiving hole 201, there is a possibility that the chip is stuck in the receiving hole 201, and the four sides of the chip do not fit the hole wall of the receiving hole 201, that is, the chip is tilted in the receiving hole 201. Therefore, it is necessary to simply adjust the position of the chip. During operation, the lifting motor 405 pushes up the lifting plate 403 and the cross plate 401, so that the top column 305 on the cross plate 401 contacts the chip, so that there is a space margin between the chip and the receiving hole 201, and then the lifting motor 405 pulls down the lifting plate 403 and the cross plate 401, so that the top column 305 is separated from the receiving hole 201. At this time, the chip falls into the receiving hole 201 again by its own gravity, and the top column 305 is repeatedly pushed up and pulled down until the four sides of the chip are completely fitted with the hole wall of the receiving hole 201, thereby reducing the time of manual operation of the chip position and improving work efficiency.

[0052] Embodiment 4

[0053] On the basis of the above-mentioned embodiment 3, in addition to applying a force from bottom to top to make the chip fall perfectly into the receiving hole 201, as shown in FIG. Figure 4-Figure 8 As shown, an upper pressure plate module 500 is installed on the positioning column 103. After the position of the chip is adjusted using the top column 305, the upper pressure plate module 500 applies a top-down force to the chip again, so that the chip is close to the receiving hole 201, thereby once again ensuring the position of the chip in the receiving hole 201.

[0054] Specifically, the upper pressing plate module 500 is installed on the positioning column 103. Figure 2 As shown, a motor hole 107 is provided in the positioning column 103, and a main motor 504 is installed in the motor hole 107. Figure 4 and Figure 5As shown, the upper pressure plate module 500 includes a movable plate 501 and a fixed plate 503, a threaded rod 508 is installed on the main motor 504, the fixed plate 503 is threadedly connected to the four threaded rods 508, the fixed plate 503 is provided with matching holes 502, the threaded rods 508 and the matching holes 502 are threadedly connected, and an upper pressure plate is installed at the bottom end of the movable plate 501, and the bottom end of the upper pressure plate is completely in contact with the top of the supporting plate 200.

[0055] During operation, the main motor 504 drives the threaded rod 508 to rotate, and the fixing plate 503 moves downward, so that the top surface of the upper pressing plate contacts the chip, and the chip is further pressed into the receiving hole 201 .

[0056] Furthermore, since the swing amplitude of the carrier plate 200 is subject to certain restrictions, the upper pressure plate module 500 further includes a scraping roller 506. Specifically, the four threaded rods 508 are also threadedly connected to an upper linkage plate 505, and a lower boss 507 is installed at the bottom end of the upper linkage plate 505. The upper linkage plate 505 and the lower boss 507 are located above the fixed plate 503, and the threads of the upper linkage plate 505 and the fixed plate 503 are rotated in opposite directions, that is, when the threaded rods 508 rotate, the upper linkage plate 505 and the fixed plate 503 rotate in opposite directions. The fixed plate 503 makes relative or reverse movements, and a movable plate 501 is hinged on the opposite surface of the fixed plate 503. The main motor 504 drives the threaded rod 508 to rotate, the fixed plate 503 moves upward, and the upper linkage plate 505 moves downward. While the fixed plate 503 moves, the two movable plates 501 hinged on the fixed plate 503 flip downward, so that the bottom of the lower boss 507 passes through the fixed plate 503 and contacts the top surface of the chip. A chip scraper roller 506 is movably installed on the lower boss 507.

[0057] like Figure 6 and Figure 8 As shown, a movable groove 513 is opened in the lower boss 507, a round block 509 is slidably connected in the movable groove 513, a mounting frame 512 is installed on the round block 509, the chip scraping roller 506 is installed at the bottom end of the mounting frame 512, a transverse cylinder 517 is installed at one end of the movable groove 513, a straight hole 518 is opened in the chip scraping roller 506, the output end of the transverse cylinder 517 is located in the straight hole 518, the transverse cylinder 517 is used to pull the round block 509 to move in the movable groove 513, so as to realize the movement of the scraping roller 506, and the scraping roller 506 scrapes out the excess chips remaining on the carrier plate 200.

[0058] Furthermore, if Figure 6As shown, a sliding hole 511 is opened in the lower boss 507, and the sliding hole 511 is connected to the movable groove 513. A vertical cylinder 510 is installed on the lower boss 507, and the bottom end of the vertical cylinder 510 is clamped with the round block 509. A fixed magnetic block 515 is installed in the sliding hole 511, and a movable magnetic block 516 is magnetically attracted to the fixed magnetic block 515. A magnet suction block is installed at the output end of the transverse cylinder 517, and the height of the movable magnetic block 516 is greater than the diameter of the straight hole 518. A downward pressure area 514 is provided on the lower boss 507, and the bottom end of the downward pressure area 514 is completely in contact with the top of the supporting plate 200. When the downward pressure area 514 on the lower boss 507 is working, the scraper roller 506 is retracted into the sliding hole 511.

[0059] During operation, the vertical cylinder 510 pushes the round block 509 downward, so that the scraper roller 506 is pushed out of the sliding hole, that is, the scraper roller 506 is in contact with the top surface of the carrier plate 200, and the surface of the scraper roller 506 is a soft brush, so its scraping force cannot scrape out the chips that are already in the accommodating hole 201; the output end of the horizontal cylinder 517 passes through the straight hole 518, so that the output end of the horizontal cylinder 517 and the movable magnetic block 516 are magnetically attracted, so that the movable magnetic block 516 is separated from the fixed magnetic block 515, and the movable magnetic block 516 clamps the round block 509, so that the round block 509 is separated from the output end of the vertical cylinder 510, and the movement of the scraper roller 506 is realized. The movable magnetic block 516 is pushed to the fixed magnetic field 515 by the output end of the transverse cylinder 517, and the movable magnetic block 516 is magnetically attracted by the fixed magnetic field 515. The output end of the transverse cylinder 517 is separated from the straight hole 518, and the round block 509 is pulled into the sliding hole 511 through the vertical cylinder 510. The main motor 504 works again, so that the lower boss 507 moves downward again, and the lower pressing area 514 contacts the chip to press the chip into the receiving hole 201 again.

[0060] The working principle of the present invention when working is:

[0061] The electric slide rail 301 pushes the slide table 302 to the center of the workbench 100 , that is, the stopper 304 moves toward the outer wall of the carrier plate 200 until the stopper 304 is tightly attached to the carrier plate 200 ;

[0062] A large number of chips are poured onto the carrier plate 200, and then pressure is applied to the carrier plate 200 (by shaking the carrier plate 200 manually or by a robot), so that the carrier plate 200 shakes relative to the positioning column 103, thereby shaking the chips on the end surface of the carrier plate 200 that have not fallen into the receiving hole 201 to fall into the receiving hole 201;

[0063] The lifting motor 405 pushes up the lifting plate 403 and the horizontal plate 401, so that the lifting pillar 305 on the horizontal plate 401 contacts the chip, so that there is a space margin between the chip and the receiving hole 201, and then the lifting motor 405 pulls down the lifting plate 403 and the horizontal plate 401, so that the lifting pillar 305 is separated from the receiving hole 201, and the chip falls into the receiving hole 201 again by its own gravity, and the action of pushing up and pulling down the lifting pillar 305 is repeated until the four sides of the chip are completely attached to the hole wall of the receiving hole 201;

[0064] Method 1: The main motor 504 drives the threaded rod 508 to rotate, and the fixed plate 503 moves downward, so that the top surface of the upper pressing plate contacts the chip, and the chip is further pressed into the receiving hole 201;

[0065] Mode 2: The main motor 504 drives the threaded rod 508 to rotate, the fixed plate 503 moves upward, and the upper linkage plate 505 moves downward. When the fixed plate 503 moves, the two movable plates 501 hinged on the fixed plate 503 flip downward, so that the bottom of the lower boss 507 passes through the fixed plate 503 and contacts the top surface of the chip. The vertical cylinder 510 pushes the round block 509 downward to push the scraper roller 506 out of the sliding hole, that is, the scraper roller 506 contacts the top surface of the carrier plate 200. The surface of the scraper roller 506 is a soft brush, so its scraping force cannot scrape out the chip that is already in the accommodating hole 201; the output end of the horizontal cylinder 517 passes through the straight hole 518, so that the output end of the horizontal cylinder 517 and the movable magnetic block 516 are magnetically attracted, so that the movable magnetic block 516 is separated from the fixed plate 503. The fixed magnetic block 515 and the movable magnetic block 516 clamp the round block 509, so that the round block 509 is separated from the output end of the vertical cylinder 510, and the scraper roller 506 is moved back and forth. Then, the output end of the vertical cylinder 510 is inserted into the round block 509 again. The round block 509 has a self-contained clamping structure to connect it with the vertical cylinder 510. The output end of the transverse cylinder 517 pushes the movable magnetic block 516 to the fixed magnetic field 515. The fixed magnetic field 515 magnetically attracts the movable magnetic block 516. The output end of the transverse cylinder 517 is separated from the straight hole 518, and the round block 509 is pulled into the sliding hole 511 through the vertical cylinder 510. The main motor 504 works again, so that the lower boss 507 moves down again, and the lower pressing area 514 contacts the chip to press the chip into the receiving hole 201 again.

[0066] After chips are placed in each receiving hole 201 of the carrier plate 200, the pressure applied to the carrier plate 200 is removed to restore the carrier plate 200 to a horizontal state, and the stopper 304 is pushed toward the carrier plate 200 again through the electric slide rail 301 and the slide table 302 so that the stopper 304 fits the carrier plate 200 again.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A chip positioning fixture, characterized in that: The invention comprises a carrier plate (200) and a workbench (100), wherein the carrier plate (200) is used to store chips, and the workbench (100) is used to install the carrier plate (200). The carrier plate (200) is evenly spaced with a plurality of accommodating holes (201), wherein the accommodating holes (201) are stepped holes, and the chips are placed in the accommodating holes (201). A lifting structure (400) is installed below the accommodating holes (201), and the lifting mechanism (400) comprises a lifting column (305), wherein the lifting column (305) is located below the carrier plate (200), and the top of the lifting column (305) is located above the accommodating holes (201). 201), the top column (305) contacts the bottom of the chip, four round holes (106) are provided on the workbench (100), the four round holes (106) are arranged on the workbench (100) in a quadrilateral shape, four positioning columns (103) are installed on the workbench (100), the four positioning columns (103) are installed in the round holes (106), a groove (104) is opened in the positioning column (103), the supporting plate (200) is movably installed in the groove (104), and a spring (105) is installed between the supporting plate (200) and the groove (104).

2. The chip positioning fixture according to claim 1, characterized in that: The workbench (100) is provided with four mounting holes (101), the four mounting holes (101) are arranged on the diagonal lines of the workbench (100), a limiting mechanism (300) is installed on the workbench (100), the limiting mechanism (300) is installed on one of the diagonal lines of the workbench (100), the limiting mechanism (300) comprises a stopper (304), and two electric slide rails (301) are installed on the workbench (100), the two electric slide rails (301) are opposite to each other. The angle lines are distributed on the workbench (100), a slide table (302) is slidably connected to the electric slide rail (301), push rods (303) are symmetrically installed on the opposite surface of the slide table (302), the stopper (304) is installed at one end of the push rod (303), the distance between the two push rods (303) on the same slide table (302) is greater than the diameter of the positioning column (103), and when the bearing plate (200) is in a fixed state, one end of the stopper (304) is in close contact with the bearing plate (200).

3. The chip positioning fixture according to claim 2, characterized in that: The lifting structure (400) further comprises a lower movable plate (404), on which a lifting motor (405) is mounted, and an intermediate shaft (402) is mounted at the output end of the lifting motor (405), the intermediate shaft (402) passes through the workbench (100) and is mounted with a lifting plate (403), a plurality of transverse plates (401) are welded on the lifting plate (403) at even intervals, the lifting column (305) is mounted on the transverse plate (401), and the position of the lifting column (305) corresponds to the position of the accommodating hole (201).

4. The chip positioning fixture according to claim 3, characterized in that: The four corners of the lower movable plate (404) are slidably connected to limit rods (406), and the top end of the limit rod (406) is connected to the bottom end of the workbench (100).

5. The chip positioning fixture according to claim 2, characterized in that: An upper pressure plate module (500) is installed on the positioning column (103), and the upper pressure plate module (500) includes a movable plate (501) and a fixed plate (503). A motor hole (107) is opened in the positioning column (103), and a main motor (504) is installed in the motor hole (107). A threaded rod (508) is installed on the main motor (504). The four threaded rods (508) are threadedly connected to the fixed plate (503). The fixed plate (503) is opened with a matching hole (502). The threaded rod (508) and the matching hole (502) are threadedly connected. The movable plate (501) is hinged on the opposite surface of the fixed plate (503). The upper pressure plate is installed at the bottom end of the movable plate (501), and the bottom end of the upper pressure plate is completely in contact with the top end of the bearing plate (200).

6. The chip positioning fixture according to claim 5, characterized in that: The four threaded rods (508) are also threadedly connected with an upper linkage plate (505), and a lower boss (507) is installed at the bottom end of the upper linkage plate (505). The upper linkage plate (505) and the lower boss (507) are located above the fixed plate (503). The threads of the upper linkage plate (505) and the fixed plate (503) are rotated in opposite directions, that is, when the threaded rods (508) rotate, the upper linkage plate (505) and the fixed plate (503) move relative to or opposite to each other, and a chip scraping roller (506) is movably installed on the lower boss (507).

7. The chip positioning fixture according to claim 6, characterized in that: The lower boss (507) is provided with a movable groove (513), a round block (509) is slidably connected in the movable groove (513), a mounting frame (512) is installed on the round block (509), the chip scraping roller (506) is installed at the bottom end of the mounting frame (512), a transverse cylinder (517) is installed at one end of the movable groove (513), a straight hole (518) is provided in the chip scraping roller (506), and the output end of the transverse cylinder (517) is located in the straight hole (518).

8. The chip positioning fixture according to claim 7, characterized in that: A sliding hole (511) is provided in the lower boss (507), and the sliding hole (511) is connected to the movable groove (513). A vertical cylinder (510) is installed on the lower boss (507), and the bottom end of the vertical cylinder (510) is clamped with the round block (509). A fixed magnetic block (515) is installed in the sliding hole (511), and a movable magnetic block (516) is magnetically attracted to the fixed magnetic block (515). A magnetic attraction block is installed at the output end of the horizontal cylinder (517), and the height of the movable magnetic block (516) is greater than the diameter of the straight hole (518).

9. The chip positioning fixture according to claim 6, characterized in that: The lower boss (507) is provided with a lower pressing area (514), and the bottom end of the lower pressing area (514) is completely in contact with the top end of the supporting plate (200).

10. A positioning method using the chip positioning fixture as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the electric slide rail (301) pushes the slide table (302) to the center position of the workbench (100), that is, the stopper (304) moves toward the outer wall of the carrier plate (200) until the stopper (304) is tightly attached to the carrier plate (200); S2, pouring a large number of chips onto the carrier plate (200), then applying pressure to the carrier plate (200), and shaking the carrier plate (200) by human or mechanical operation, so that the carrier plate (200) shakes relative to the positioning column (103), thereby shaking the chips on the end surface of the carrier plate (200) that have not fallen into the receiving hole (201) into the receiving hole (201); S3, the lifting motor (405) pushes up the lifting plate (403) and the horizontal plate (401), so that the lifting column (305) on the horizontal plate (401) contacts the chip, so that there is a space margin between the chip and the receiving hole (201), and then the lifting motor (405) pulls down the lifting plate (403) and the horizontal plate (401), so that the lifting column (305) is separated from the receiving hole (201), and the chip falls into the receiving hole (201) again by its own gravity, and the action of pushing up and pulling down the lifting column (305) is repeated until the four sides of the chip are completely attached to the hole wall of the receiving hole (201); S4， Method 1: The main motor (504) drives the threaded rod (508) to rotate, and the fixed plate (503) moves downward, so that the top surface of the upper pressing plate contacts the chip, and the chip is further pressed into the receiving hole (201); Method 2: The main motor (504) drives the threaded rod (508) to rotate, the fixed plate (503) moves upward, and the upper linkage plate (505) moves downward. When the fixed plate (503) moves, the two movable plates (501) hinged on the fixed plate (503) flip downward, so that the bottom of the lower boss (507) passes through the fixed plate (503) and contacts the top surface of the chip. The vertical cylinder (510) pushes the round block (509) downward to push the scraper roller (506) out of the sliding hole, that is, the scraper roller (506) contacts the top surface of the carrier plate (200). The surface of the scraper roller (506) is a soft brush, so its scraping force cannot scrape out the chip that is already in the accommodating hole (201); the output end of the horizontal cylinder (517) passes through the straight hole (518), so that the output end of the horizontal cylinder (517) and the movable magnetic block (516) are magnetically attracted, so that The movable magnetic block (516) is separated from the fixed magnetic block (515), and the movable magnetic block (516) clamps the round block (509), so that the round block (509) is separated from the output end of the vertical cylinder (510), and the scraper roller (506) moves back and forth. Then, the output end of the vertical cylinder (510) is inserted into the round block (509) again, and the output end of the transverse cylinder (517) pushes the movable magnetic block (516) to the fixed magnetic field (515). The fixed magnetic field (515) magnetically attracts the movable magnetic block (516), and the output end of the transverse cylinder (517) is separated from the straight hole (518). The round block (509) is pulled into the sliding hole (511) through the vertical cylinder (510), and the main motor (504) works again, so that the lower boss (507) moves downward again, and the lower pressing area (514) contacts the chip to press the chip into the receiving hole (201) again; S5, after a chip is placed in each receiving hole (201) of the carrier plate (200), the pressure applied to the carrier plate (200) is removed to restore the carrier plate (200) to a horizontal state, and the stopper (304) is pushed toward the carrier plate (200) again by the electric slide rail (301) and the slide table (302), so that the stopper (304) is again attached to the carrier plate (200).

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