Self-locking positioning jig

Abstract

The utility model belongs to the technical field of jigs, and relates to a self-locking positioning jig. The self-locking positioning jig comprises a jig body and a first lock catch mechanism. The jig body is provided with a first assembling position. The first locking mechanism comprises a first driving assembly and a plurality of locking plate assemblies, and the multiple locking plate assemblies are movably installed on the jig body and distributed along the outline of the orthographic projection of the first assembling position. The first driving assembly is installed on the jig body. The first driving assembly is configured to drive the multiple locking plate assemblies to move so that the multiple locking plate assemblies can jointly abut against the side wall of the PCB. According to the self-locking positioning jig, automatic locking of the PCB can be achieved through cooperation of the first driving assembly and the locking plate assembly, manual operation is not needed, the risk of manual misoperation can be reduced, and meanwhile the working efficiency and the PCB repair yield are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jigs, and in particular to a self-locking positioning jig. BACKGROUND

[0002] In the PCB mainboard assembly repair operation, the PCB board is usually loaded into a fixing jig to protect the PCB board from damage. However, the existing common method is to manually load the PCB board, which not only has low work efficiency and high labor cost, but also has the risk of misoperation and damage to the PCB board. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a self-locking positioning jig to improve the technical problems of low efficiency, high cost and easy damage to the PCB board caused by manual loading of the PCB board.

[0004] An embodiment of the present application provides a self-locking positioning jig. The self-locking positioning jig is configured to fix a PCB board made of a multi-layer mainboard. The self-locking positioning jig comprises a jig body and a first locking mechanism. The jig body is provided with a first assembly position configured to accommodate the PCB board. The first locking mechanism comprises a first driving assembly and a plurality of locking piece assemblies, the plurality of locking piece assemblies are movably installed on the jig body and distributed along the contour of the first assembly position. The first driving assembly is installed on the jig body. The first driving assembly is configured to drive the plurality of locking piece assemblies to move so that the plurality of locking piece assemblies collectively abut against the side wall of the PCB board.

[0005] In the self-locking positioning jig described above, when the PCB board is accommodated into the first assembly position, the first driving assembly drives the plurality of locking piece assemblies to move towards the PCB board, and the plurality of locking piece assemblies collectively abut against the side wall of the PCB board, thereby achieving the locking loading of the PCB board. Compared with the existing manual loading of the PCB board, the self-locking positioning jig of the present application can automatically lock the PCB board through the cooperation of the first driving assembly and the locking piece assembly, without manual operation, which is helpful to reduce the risk of manual misoperation, improve work efficiency and the yield of PCB board repair.

[0006] In at least one embodiment, the locking piece assembly comprises a fixing seat and a clamping piece. The fixing seat is installed on the jig body. The fixing seat has a top wall and a bottom wall parallel to each other. The fixing seat is provided with a first installation groove which is inclined and penetrates through the top wall and the bottom wall. The clamping piece comprises a connecting section, an abutting section and a driving section. The connecting section is rotatably installed in the first installation groove. The abutting section is installed at one end of the connecting section and penetrates out of the top wall. The abutting section is configured to abut against the side wall of the PCB board. The driving section is installed at the other end of the connecting section and penetrates out of the bottom wall. The driving section is connected with the first driving assembly.

[0007] The locking piece assembly is designed with a fixing base and a clamping piece, which is beneficial to reduce the maintenance cost while ensuring the positioning and locking of the PCB. For example, when the clamping piece is damaged, the technician only needs to replace the corresponding clamping piece, without replacing the entire locking piece assembly.

[0008] In at least one embodiment, the connecting segment is provided with a convex part in the shape of a sphere, and the groove wall of the first mounting groove is provided with a concave part in the shape of a sphere. When the connecting segment is mounted in the first mounting groove, the convex part can be rotatably clamped in the concave part.

[0009] When the first driving assembly drives the clamping piece to rotate, the convex part in the shape of a sphere always rotates in the concave part in the shape of a sphere. By providing the convex part and the concave part that cooperate with each other, on the one hand, it helps to reduce the risk of the clamping piece deviating or separating from the fixing base, and improves the stability of the self-locking positioning jig; on the other hand, it is beneficial to ensure smooth rotation of the clamping piece and reduce the risk of jamming or sticking of the clamping piece during rotation.

[0010] In at least one embodiment, the first driving assembly includes a driving rod and a magnetic connection plate. The driving rod is mounted to the jig body and is configured to be connected to an external power source. The magnetic connection plate is movably mounted to the jig body, and the driving rod and the driving segment are connected to the magnetic connection plate. The magnetic connection plate is configured to drive the clamping pieces in all locking piece assemblies to rotate towards or away from the side wall of the PCB under the action of the driving rod. By providing the magnetic connection plate, one driving rod can drive all clamping pieces to lock or unlock, which is beneficial to reduce the number of driving rods and reduce production costs.

[0011] In at least one embodiment, the magnetic connection plate is provided with a plurality of magnetic elements, and the plurality of magnetic elements are distributed along the contour of the first assembly position orthographic projection, and each magnetic element corresponds to a locking piece assembly. The locking piece assembly further includes a magnetic connecting piece and an elastic piece. One end of the magnetic connecting piece is in sliding connection with the driving segment, and the other end is in adsorption with the corresponding magnetic element. The elastic piece is sleeved on the magnetic connecting piece, and one end of the elastic piece abuts against the driving segment, and the other end abuts against the magnetic connection plate.

[0012] By using the cooperation of the magnetic element and the magnetic connecting piece, the transmission connection between the clamping piece and the driving rod is realized. That is, the transmission connection between the clamping piece and the driving rod is realized by magnetic attraction. On the one hand, the technician does not need to drill or cut the magnetic connection plate and the clamping piece, which helps to improve the structural strength of the clamping piece and the magnetic connection plate. On the other hand, when the clamping piece is repaired or replaced, the technician only needs to apply a force greater than the magnetic attraction force to separate the magnetic connection plate from the clamping piece, which simplifies the disassembly steps of the self-locking positioning jig and is beneficial to the subsequent maintenance of the locking piece assembly.

[0013] In at least one embodiment, the driving rod is provided with a first clamping part, and the jig body is provided with a second clamping part. The driving rod is configured to be switched to a locked position or an unlocked position. When the driving rod is in the locked position, the first clamping part is clamped with the second clamping part, and the clamping pieces in all the locking piece assemblies abut against the side wall of the PCB. When the driving rod is in the unlocked position, the first clamping part is separated from the second clamping part, and the clamping pieces in all the locking piece assemblies are released from abutting against the side wall of the PCB.

[0014] In at least one embodiment, the self-locking positioning jig further comprises a pad made of synthetic stone material. The pad is mounted to the jig body. The pad is configured to separate the PCB from the jig body.

[0015] In the process of heating and separating the PCB by the external heating device, the self-locking positioning jig can absorb part of the heat through the pad made of synthetic stone material, so as to reduce the heat transferred into the self-locking positioning jig, which is conducive to reducing the risk of deformation or damage of the self-locking positioning jig due to long-time exposure to high temperature environment, and prolonging the service life of the self-locking positioning jig.

[0016] In at least one embodiment, the jig body is further provided with a second assembly position configured to accommodate the main board detached from the PCB. The self-locking positioning jig further comprises a second locking mechanism comprising a second driving assembly and a plurality of abutting assemblies. The plurality of abutting assemblies are movably mounted to the jig body and distributed along the contour of the second assembly position in orthographic projection. The second driving assembly is mounted to the jig body. The second driving assembly is configured to drive the plurality of abutting assemblies to move, so that the plurality of abutting assemblies collectively abut against the side wall of the main board.

[0017] Through the provision of the second assembly position, the self-locking positioning jig can simultaneously position the PCB and the main board detached from the PCB, so as to realize the processing of multiple processes. In addition, the self-locking positioning jig is further provided with the second locking mechanism, which can realize the positioning of the main board in the second assembly position, so as to ensure the positioning accuracy of the main board and reduce the risk of deviation of the main board.

[0018] In at least one embodiment, the self-locking positioning jig further comprises a plurality of guide members. The plurality of guide members are telescopically mounted to the jig body and distributed along the contour of the first assembly position in orthographic projection and / or the outer contour of the second assembly position in orthographic projection.

[0019] When the PCB board is placed in the first assembly position, or when the main board detached from the PCB board is placed in the second assembly position, the guide member can be inserted into the positioning hole in the PCB board or the positioning hole in the main board to achieve preliminary positioning of the PCB board or the main board, which is conducive to reducing the risk of damage to the PCB board caused by the offset of the PCB board when the clamping piece locks the PCB board. In addition, when the PCB board or the main board needs to be taken out, the guide member can be retracted into the jig body, which helps to reduce the risk of motion interference.

[0020] In at least one embodiment, the jig body is also provided with a transfer station configured to temporarily store the main board detached from the PCB board.

[0021] With the provision of the transfer station, it is beneficial to reduce the downtime of the self-locking positioning jig and improve work efficiency. For example, when the second locking mechanism in the second station fails or needs to be adjusted and is temporarily suspended, the transfer station can temporarily store the main board detached from the first assembly position, so that the maintenance of the PCB board in the first assembly position can continue, ensuring the continuity and stability of the processing. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a self-locking positioning jig in an embodiment of the present application;

[0023] Figure 2 is a structural schematic diagram of the self-locking positioning jig shown in Figure 1 from another angle;

[0024] Figure 3 is a structural schematic diagram of the jig body and the first locking mechanism in the self-locking positioning jig shown in Figure 1 ;

[0025] Figure 4 is a structural schematic diagram of the locking piece assembly in the self-locking positioning jig shown in Figure 1 ;

[0026] Figure 5 is a structural schematic diagram of the locking piece assembly in the self-locking positioning jig shown in Figure 3 ;

[0027] Figure 6 is a structural schematic diagram of the locking piece assembly in the self-locking positioning jig shown in Figure 5 ;

[0028] Figure 7 is a structural schematic diagram of the locking piece assembly in the self-locking positioning jig shown in Figure 5 ;

[0029] Figure 8 is a structural schematic diagram of the locking piece assembly in the self-locking positioning jig shown in Figure 1 ;

[0030] Figure 9 is Figure 8 is a partial enlarged view of VI;

[0031] Figure 10 is Figure 1 is a partial enlarged view of X.

[0032] Explanation of main element symbols:

[0033] 100, self-locking positioning jig;

[0034] 10, jig body; 11, first assembly position; 12, second assembly position; 13, transfer station; 14, second clamping portion;

[0035] 20, first locking mechanism; 21, first driving assembly; 211, driving rod; 2111, first clamping portion; 212, magnetic attraction connecting plate; 2121, second mounting groove; 2122, magnetic attraction piece; 22, locking piece assembly; 221, fixed seat; 2211, top wall; 2212, bottom wall; 2213, first mounting groove; 22131, recess; 222, clamping piece; 2221, connecting section; 22211, protrusion; 2222, abutting section; 2223, driving section; 223, magnetic connecting piece; 224, elastic piece;

[0036] 30, cushion block;

[0037] 40, second locking mechanism; 41, abutting assembly; 411, movable piece; 412, positioning piece;

[0038] 50, guide piece.

[0039] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0042] The self-locking positioning jig is configured to fix a PCB made of a multi-layer mainboard. The self-locking positioning jig comprises a jig body provided with a first assembly position configured to accommodate the PCB. A first locking mechanism comprises a first driving assembly and a plurality of lock piece assemblies, each of which is movably mounted on the jig body and distributed along the contour of the first assembly position. The first driving assembly is mounted on the jig body. The first driving assembly is configured to drive the plurality of lock piece assemblies to move so that the plurality of lock piece assemblies collectively abut against the side wall of the PCB.

[0043] In the self-locking positioning jig described above, when the PCB is accommodated into the first assembly position, the first driving assembly drives the plurality of lock piece assemblies to move towards the PCB, and the plurality of lock piece assemblies collectively abut against the side wall of the PCB, thereby achieving the locking loading of the PCB. Compared with the existing manual loading of the PCB, the self-locking positioning jig of the present application can automatically lock the PCB through the cooperation of the first driving assembly and the lock piece assembly, without manual operation, which is beneficial to reduce the risk of manual misoperation, improve work efficiency and the yield of PCB repair.

[0044] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0045] Please refer to Figure 1 and Figure 2 An embodiment of the present application provides a self-locking positioning jig 100. The self-locking positioning jig 100 is configured to fix a PCB (not shown in the figure) made of a multi-layer mainboard, such as a sandwich stack structure of a mainboard in a mobile phone. The present application is not limited, and those skilled in the art can select according to the actual situation.

[0046] The self-locking positioning jig 100 comprises a jig body 10 and a first locking mechanism 20. The jig body 10 is provided with a first assembly position 11 configured to accommodate the PCB. The first assembly position 11 can achieve the primary positioning of the PCB, so as to facilitate the locking operation of the first locking mechanism 20.

[0047] In some embodiments, the jig body 10 is provided with a positioning groove (not shown in the figure) to form the first assembly position 11. The PCB is accommodated in the positioning groove. It is worth noting that the top surface of the PCB is exposed outside the positioning groove for an external transfer device (not shown in the figure) to take and transport the top mainboard detached from the PCB.

[0048] In other embodiments, the first assembly position 11 can also have other structures, for example, a protrusion is provided, and the protrusion is arranged to form the first assembly position 11. The present application does not limit this, and those skilled in the art can select according to the actual situation.

[0049] Please continue to refer to Figure 3 and Figure 4 In some embodiments, the first locking mechanism 20 comprises a first driving assembly 21 and a plurality of locking piece assemblies 22. The plurality of locking piece assemblies 22 are movably mounted on the jig body 10 and are arranged along the contour of the first assembly position 11 in the orthographic projection.

[0050] The first driving assembly 21 is mounted on the jig body 10. The first driving assembly 21 is configured to drive the plurality of locking piece assemblies 22 to move so that the plurality of locking piece assemblies 22 collectively abut the side wall of the PCB board.

[0051] It can be understood that when the PCB board is accommodated into the first assembly position 11, the first driving assembly 21 drives the plurality of locking piece assemblies 22 to move towards the PCB board, and the plurality of locking piece assemblies 22 collectively abut the side wall of the PCB board, thereby achieving the locking loading of the PCB board. When it is needed to release the locking of the PCB board, the first driving assembly 21 can drive the plurality of locking piece assemblies 22 to move away from the PCB board.

[0052] Compared with the existing manual loading of the PCB board, the self-locking jig 100 of the present application can realize the automatic locking of the PCB board through the cooperation of the first driving assembly 21 and the locking piece assembly 22, without the need for manual operation, which is beneficial to reduce the risk of human error and improve the work efficiency and the yield of PCB board repair.

[0053] Please refer to Figure 3 , Figure 5 and Figure 6 In some embodiments, the locking piece assembly 22 comprises a fixed seat 221 and a clamping piece 222. The fixed seat 221 is mounted on the jig body 10, and the fixed seat 221 has a top wall 2211 and a bottom wall 2212 which are parallel to each other. The fixed seat 221 is provided with a first mounting groove 2213 which is inclined and penetrates through the top wall 2211 and the bottom wall 2212.

[0054] Please refer to Figure 5 , Figure 8 and Figure 9 In some embodiments, the clamping piece 222 comprises a connecting section 2221, an abutting section 2222 and a driving section 2223. The connecting section 2221 is rotatably mounted in the first mounting groove 2213, the abutting section 2222 is mounted at one end of the connecting section 2221 and penetrates out of the top wall 2211. The abutting section 2222 is configured to abut the side wall of the PCB board. The driving section 2223 is mounted at the other end of the connecting section 2221 and penetrates out of the bottom wall 2212. The driving section 2223 is connected with the first driving assembly 21.

[0055] Understandably, when the PCB board is accommodated to the first assembly position 11, the first driving assembly 21 drives the driving section 2223 of the clamping piece 222 to rotate around the rotation axis of the connecting section 2221, and then drives the abutting section 2222 of the clamping piece 222 to move towards the side wall of the PCB board, and abuts against the side wall of the PCB board, so as to realize the locking of the PCB board.

[0056] When the PCB board needs to be taken out, the first driving assembly 21 drives the driving section 2223 of the clamping piece 222 to rotate reversely around the rotation axis of the connecting section 2221, and then drives the abutting section 2222 of the clamping piece 222 to move away from the side wall of the PCB board, so as to release the locking of the PCB board.

[0057] By adopting the design of the fixing seat 221 and the clamping piece 222, it is beneficial to reduce the maintenance cost while ensuring the positioning and locking of the PCB board. For example, when the clamping piece 222 is damaged, the technician only needs to replace the corresponding clamping piece 222, without replacing the whole locking piece assembly 22.

[0058] In some embodiments, the distance between the two ends of the first mounting groove 2213 (specifically, the distance between the slot on the top wall 2211 and the slot on the bottom wall 2212) is smaller when it is closer to the rotation axis of the connecting section 2221. Thus, it is beneficial to reduce the problem of movement interference between the connecting section 2221 and the fixing seat 221 during rotation, thereby further improving the stability of abutting against the side wall of the PCB board.

[0059] For example, the clamping piece 222 is in Z shape. The Z-shaped clamping piece 222 includes two parallel straight sections and an inclined section therebetween, one of the two straight sections is the abutting section 2222, and the other is the driving section 2223. The inclined section is the connecting section 2221. The first mounting groove 2213 is in X shape, and the rotation axis of the connecting section 2221 is the intersection position of the X-shaped first mounting groove 2213.

[0060] Please continue to refer to Figures 5 to 7 In some embodiments, the connecting section 2221 is provided with a convex part 22211 in the shape of a sphere, and the groove wall of the first mounting groove 2213 is provided with a concave part 22131 in the shape of a sphere. When the connecting section 2221 is installed in the first mounting groove 2213, the convex part 22211 can be rotatably connected in the concave part 22131. When the first driving assembly 21 drives the clamping piece 222 to rotate, the convex part 22211 in the shape of a sphere always rotates in the concave part 22131 in the shape of a sphere.

[0061] By setting the mutually matched convex part 22211 and the concave part 22131, on one hand, the risk of the clamping piece 222 deviating or separating from the fixing seat 221 is reduced, and the stability of the self-locking positioning jig 100 is improved; on the other hand, the smooth rotation of the clamping piece 222 is ensured, and the risk of the clamping piece 222 being stuck or locked during rotation is reduced.

[0062] In other embodiments, the connecting section 2221 can also be installed in the first installation groove 2213 in other structures, for example, the connecting section 2221 is installed in the first installation groove 2213 through a rotating pin, and the connecting section 2221 takes the axis of the rotating pin as the rotation axis. The present application does not make any limitation in this regard, and those skilled in the art can select according to the actual situation.

[0063] Please refer to Figure 2 , Figure 3 and Figure 9 In some embodiments, the first driving assembly 21 includes a driving rod 211 and a magnetic connection plate 212. The driving rod 211 is installed on the jig body 10 and is configured to be connected with an external power source (not shown in the figure).

[0064] The magnetic connection plate 212 is movably installed on the jig body 10, and the driving rod 211 and the driving section 2223 are connected with the magnetic connection plate 212. The magnetic connection plate 212 is configured to move all the clamping pieces 222 in the locking piece assembly 22 towards or away from the side wall of the PCB under the action of the driving rod 211.

[0065] By setting the magnetic connection plate 212, one driving rod 211 can drive all the clamping pieces 222 to lock or unlock, which is beneficial to reduce the number of driving rods 211 and reduce the production cost.

[0066] For example, when locking the PCB, the driving rod 211 drives the magnetic connection plate 212 to move towards the jig body 10, the magnetic connection plate 212 drives the driving section 2223 of the clamping piece 222 to rotate counterclockwise around the rotation axis of the connecting section 2221 of the clamping piece 222, and then drives the abutting section 2222 of the clamping piece 222 to move towards the side wall of the PCB and abut against the side wall of the PCB, so as to realize the locking of the PCB.

[0067] When unlocking the PCB, the driving rod 211 drives the magnetic connection plate 212 to move away from the jig body 10, the magnetic connection plate 212 drives the driving section 2223 of the clamping piece 222 to rotate clockwise around the rotation axis of the connecting section 2221 of the clamping piece 222, and then drives the abutting section 2222 of the clamping piece 222 to move away from the side wall of the PCB, so as to realize the unlocking of the PCB.

[0068] Please refer to Figure 2、 Figure 8 and Figure 9 In some embodiments, the magnetic connection plate 212 is provided with a plurality of magnetic members 2122, which are distributed along the contour of the first assembly position 11 in the orthographic projection, and each magnetic member 2122 corresponds to a locking piece assembly 22. The locking piece assembly 22 further comprises a magnetic connecting member 223, one end of which is connected with the driving segment 2223, and the other end is attracted to the corresponding magnetic member 2122.

[0069] The transmission connection between the clamping piece 222 and the driving rod 211 is achieved by the cooperation of the magnetic member 2122 and the magnetic connecting member 223. That is, the transmission connection between the clamping piece 222 and the driving rod 211 is achieved by magnetic connection. On the one hand, the technician does not need to drill or cut the magnetic connection plate 212 and the clamping piece 222, which helps to improve the structural strength of the clamping piece 222 and the magnetic connection plate 212.

[0070] On the other hand, when the clamping piece 222 is repaired or replaced, the technician only needs to exert a force greater than the magnetic force to separate the magnetic connection plate 212 and the clamping piece 222, which simplifies the disassembly steps of the self-locking positioning jig 100 and is conducive to the subsequent maintenance of the locking piece assembly 22.

[0071] In other embodiments, the driving rod 211 and the driving end of the clamping piece 222 can be directly connected by a fastener, which is not limited in the present application, and the person skilled in the art can choose according to the actual situation.

[0072] For example, the magnetic member 2122 is a magnet, and the magnetic connecting member 223 is a metal nail. One side of the magnetic connection plate 212 is provided with a plurality of second mounting grooves 2121, and the magnet is mounted in the second mounting groove 2121. One end of the metal nail is connected with the driving segment 2223, and the other end is attracted to the magnet.

[0073] In other embodiments, the magnetic member 2122 and the magnetic connecting member 223 can also be two magnetic structures with opposite magnetic properties, which are not limited in the present application, and the person skilled in the art can choose according to the actual situation.

[0074] Please refer to Figure 5 、 Figure 8 and Figure 9 In some embodiments, one end of the magnetic connecting member 223 is in sliding connection with the driving segment 2223. The locking piece assembly 22 further comprises an elastic member 224, which is sleeved on the magnetic connecting member 223, and one end of the elastic member 224 is in abutment with the driving segment 2223, and the other end is in abutment with the magnetic connection plate 212.

[0075] Through the setting of the elastic member 224, the automatic unlocking of the locking piece assembly 22 to the PCB board can be realized, which is beneficial to improve the automation degree of the self-locking positioning jig 100, and further improve the user's use experience.

[0076] It can be understood that when the PCB board is locked, the driving rod 211 drives the magnetic connection plate 212 to move towards the jig body 10, and the magnetic connection plate 212 drives the magnetic connecting piece 223 to slide relative to the driving section 2223. At this time, the elastic member 224 is elastically deformed and generates elastic potential energy, and the driving section 2223 rotates around the rotation axis of the connecting section 2221 under the elastic force of the elastic member 224, and further drives the abutting section 2222 to move towards the side wall of the PCB board, and abuts to the side wall of the PCB board.

[0077] When the locking of the PCB board is released, the magnetic connection plate 212 moves away from the jig body 10 under the elastic force of the elastic member 224, and the magnetic connection plate 212 drives the magnetic connecting piece 223 to slide in the opposite direction relative to the driving section 2223, and the magnetic connecting piece 223 drives the driving section 2223 to rotate in the opposite direction around the rotation axis of the connecting section 2221, and further drives the abutting section 2222 to move away from the side wall of the PCB board.

[0078] It is worth noting that when the elastic member 224 acts, due to the attraction force between the magnetic attraction member 2122 and the magnetic connecting piece 223, the magnetic connecting piece 223 is always stably connected with the magnetic connection plate 212.

[0079] Please refer to Figure 3 、 Figure 8 and Figure 9 In some embodiments, the driving rod 211 is provided with a first clamping portion 2111, and the jig body 10 is provided with a second clamping portion 14. The driving rod 211 is configured to be able to switch to a locking position or an unlocking position. When the driving rod 211 is in the locking position, the first clamping portion 2111 is clamped with the second clamping portion 14, and the clamping piece 222 in all locking piece assemblies 22 abuts to the side wall of the PCB board. When the driving rod 211 is in the unlocking position, the first clamping portion 2111 is separated from the second clamping portion 14, and the clamping piece 222 in all locking piece assemblies 22 releases the abutment to the side wall of the PCB board.

[0080] It can be understood that when the PCB is locked, the external power source drives the driving rod 211 to move, the driving rod 211 drives the magnetic connection plate 212 to move towards the jig body 10, and the magnetic connection plate 212 drives the magnetic connecting piece 223 to slide relative to the driving section 2223. The elastic member 224 is compressed and generates elastic potential energy, the driving section 2223 rotates counterclockwise around the rotation axis of the connecting section 2221 under the elastic force of the elastic member 224, and then drives the abutting section 2222 to move towards the side wall of the PCB. When the abutting section 2222 abuts against the side wall of the PCB, the external power source drives the driving rod 211 to rotate, so that the first clamping part 2111 and the second clamping part 14 are clamped with each other, that is, the driving rod 211 is in the locked position.

[0081] When the PCB is unlocked, the external power source drives the driving rod 211 to rotate, so that the first clamping part 2111 and the second clamping part 14 are separated from each other, that is, the driving rod 211 is in the unlocked position. At this time, the magnetic connection plate 212 moves away from the jig body 10 under the elastic force of the elastic member 224, the magnetic connection plate 212 drives the magnetic connecting piece 223 to slide relative to the driving section 2223 in the opposite direction, the magnetic connecting piece 223 drives the driving section 2223 to rotate clockwise around the rotation axis of the connecting section 2221, and drives the abutting section 2222 to move away from the side wall of the PCB, thereby unlocking the PCB.

[0082] Please refer to Figure 1 and Figure 3 In some embodiments, the self-locking fixture 100 further comprises a pad 30 made of synthetic stone material. The pad 30 is installed on the jig body 10, and the pad 30 is configured to separate the PCB from the jig body 10.

[0083] During the process of heating and separating the PCB by the external heating device, the self-locking fixture can absorb part of the heat through the pad 30 made of synthetic stone material, so as to reduce the heat transferred to the self-locking fixture 100, which is beneficial to reduce the risk of deformation or damage of the self-locking fixture due to long-term high-temperature environment, and prolong the service life of the self-locking fixture.

[0084] In some embodiments, the jig body 10 is also made of synthetic stone material, which is beneficial to further absorb the heat of the external heating device and reduce the risk of damage of the electronic components of the PCB due to the excessively high temperature of the PCB.

[0085] Please refer to Figure 1 and Figure 10In some embodiments, the jig body 10 is further provided with a second assembly position 12 configured to accommodate the main board detached from the PCB. After the external heating device heats and separates the PCB, the transfer mechanism places the detached main board in the second assembly position 12 and performs subsequent processing and operation on the detached main board.

[0086] With the second assembly position 12, the self-locking positioning device can simultaneously position the PCB and the main board detached from the PCB to realize processing of multiple procedures.

[0087] In some embodiments, the self-locking positioning jig 100 further comprises a second locking mechanism 40 including a second driving assembly (not shown in the figure) and a plurality of abutting assemblies 41. The plurality of abutting assemblies 41 are movably installed on the jig body 10 and distributed along the contour of the second assembly position 12. The second driving assembly is installed on the jig body 10.

[0088] The second driving assembly is configured to drive the plurality of abutting assemblies 41 to move so that the plurality of abutting assemblies 41 collectively abut against the side wall of the main board. By providing the second locking mechanism 40, the positioning of the main board in the second assembly position 12 can be realized, which is conducive to ensuring the positioning accuracy of the main board and reducing the risk of deviation of the main board.

[0089] For reference, please see Figure 1 and Figure 10 In some embodiments, the main board (not shown in the figure) is provided with a plug-in hole (not shown in the figure), and the abutting assembly 41 includes a movable piece 411 and a positioning piece 412 installed on the movable piece 411. The movable piece 411 is slidably installed on the jig body 10 and connected with the second driving assembly.

[0090] When the main board is placed in the second assembly position 12, the second driving assembly drives the movable piece 411 to move towards the second assembly position 12, and the positioning piece 412 extends into the plug-in hole of the main board to realize the locking of the main board. When the locking of the main board is released, the second driving assembly drives the movable piece 411 to move away from the second assembly position 12, and the positioning piece 412 is retracted from the plug-in hole of the main board, thereby realizing the release of the locking of the main board.

[0091] In other embodiments, other suitable positioning structures can also be used, which are not limited in the present application, and persons skilled in the art can select according to actual conditions, which are not limited in the present application.

[0092] For reference, please see Figure 1 and Figure 3In some embodiments, the self-locking positioning jig 100 further comprises a plurality of guides 50, which are telescopically mounted on the jig body 10 and distributed along the contour of the first assembly position 11 and / or the outer contour of the second assembly position 12. For example, the guides 50 are spring pins.

[0093] It can be understood that when the PCB board is placed in the first assembly position 11 or when the main board detached from the PCB board is placed in the second assembly position 12, the guides 50 can be inserted into the positioning holes in the PCB board or the positioning holes in the main board to achieve preliminary positioning of the PCB board or the main board, which is conducive to reducing the risk of damage to the PCB board caused by the deviation of the clamping pieces 222 when locking the PCB board. In addition, when the PCB board or the main board needs to be taken out, the guides 50 can be retracted into the jig body 10, which helps to reduce the risk of motion interference.

[0094] Please refer to Figure 1 In some embodiments, the jig body 10 is further provided with a transfer station 13 configured to temporarily store the main board detached from the PCB board. Through the provision of the transfer station 13, it is conducive to reducing the downtime of the self-locking positioning jig 100 and improving the work efficiency.

[0095] For example, when the second locking mechanism 40 in the second station fails or needs to be adjusted and is temporarily suspended, the transfer station 13 can temporarily store the main board detached from the first assembly position 11, so that the maintenance of the PCB board in the first assembly position 11 can continue, ensuring the continuity and stability of the processing.

[0096] For example, the process of the self-locking positioning jig 100 in the present application is as follows: in the initial state, the plurality of locking piece assemblies 22 in the first locking mechanism 20 are all in the open state (specifically, the clamping pieces 222 are not all abutting against the PCB board), and the plurality of abutting assemblies 41 in the second locking mechanism 40 are all in the retracted state (specifically, the positioning members 412 are all retracted into the jig body 10).

[0097] When the PCB board is loaded, the PCB board is placed in the first assembly position 11 by the guidance of the guides 50, and the first drive assembly 21 drives the clamping pieces 222 in the plurality of locking piece assemblies 22 to rotate and abut against the side wall of the PCB board to achieve locking of the PCB board. Subsequently, an external heating device heats and separates the PCB board.

[0098] After the separation operation is completed, the transfer mechanism places the detached main board in the second assembly position 12, and the second drive assembly drives the movable member 411 to move towards the second assembly position 12, and the positioning member 412 extends into the plug-in hole of the main board to achieve locking of the main board.

[0099] In addition, those skilled in the art should understand that the above implementation is only used to illustrate the present application, and is not used as a limitation to the present application, and as long as the above implementation is within the spirit and scope of the present application, the appropriate changes and modifications of the above implementation are within the scope of the present application.

Claims

1. A self-locking fixture configured to fix a PCB board made of a multi-layer main board, characterized in that, The utility model relates to a self-locking position jig for PCB board, comprising: a jig body provided with a first assembly position configured to accommodate the PCB board; a first locking mechanism including a first driving assembly and a plurality of locking piece assemblies, each of the locking piece assemblies being movably mounted on the jig body and distributed along the outline of the first assembly position in orthographic projection, and the first driving assembly being mounted on the jig body and configured to drive the plurality of locking piece assemblies to collectively abut against the sidewall of the PCB board.

2. The self-locking fixture of claim 1, wherein, The locking piece assembly includes: a fixed seat mounted on the jig body, the fixed seat having a top wall and a bottom wall parallel to each other, the fixed seat being provided with a first mounting groove inclinedly arranged and penetrating through the top wall and the bottom wall; a clamping piece including a connecting segment, an abutting segment, and a driving segment, the connecting segment being rotatably mounted in the first mounting groove, the abutting segment being mounted at one end of the connecting segment and protruding out of the top wall, the abutting segment being configured to abut against the sidewall of the PCB board, and the driving segment being mounted at the other end of the connecting segment and protruding out of the bottom wall, the driving segment being connected with the first driving assembly.

3. The self-locking fixture of claim 2, wherein, The connecting segment is provided with a convex portion in the shape of a sphere, and the groove wall of the first mounting groove is provided with a concave portion in the shape of a spherical surface, when the connecting segment is mounted in the first mounting groove, the convex portion is rotatably connected in the concave portion.

4. The self-locking fixture of claim 2, wherein, The first driving assembly includes: a driving rod mounted on the jig body and configured to be connected with an external power source; a magnetic connection plate movably mounted on the jig body, the driving rod and the driving segment being connected with the magnetic connection plate, the magnetic connection plate being configured to drive all the clamping pieces in the locking piece assemblies to rotate towards or away from the sidewall of the PCB board under the action of the driving rod.

5. The self-locking fixture of claim 4, wherein, The magnetic connection plate is provided with a plurality of magnetic elements, the plurality of magnetic elements being distributed along the outline of the first assembly position in orthographic projection, and each of the magnetic elements corresponding to one of the locking piece assemblies; the locking piece assembly further including a magnetic connecting element and an elastic element, one end of the magnetic connecting element being slidably connected with the driving segment, the other end of the magnetic connecting element being attracted to the corresponding magnetic element, the elastic element being sleeved on the magnetic connecting element, one end of the elastic element abutting against the driving segment, and the other end of the elastic element abutting against the magnetic connection plate.

6. The self-locking fixture of claim 4, wherein, The driving rod is provided with a first clamping portion, and the jig body is provided with a second clamping portion; the driving rod being configured to be switchable to a locked position or an unlocked position, when the driving rod is in the locked position, the first clamping portion is clamped with the second clamping portion, and the clamping pieces in all the locking piece assemblies abut against the sidewall of the PCB board; when the driving rod is in the unlocked position, the first clamping portion is separated from the second clamping portion, and the clamping pieces in all the locking piece assemblies are released from abutting against the sidewall of the PCB board.

7. The self-locking fixture of any one of claims 1 to 6, wherein, The self-locking position jig further includes a pad made of synthetic stone material, the pad being mounted on the jig body and configured to separate the PCB board from the jig body.

8. The self-locking fixture of any one of claims 1 to 6, wherein, The jig body is further provided with a second assembly position configured to accommodate the mainboard detached from the PCB; The self-locking positioning jig further comprises a second locking mechanism, the second locking mechanism comprises a second driving assembly and a plurality of abutting assemblies, the plurality of abutting assemblies are movably installed on the jig body and distributed along the contour of the second assembly position, and the second driving assembly is installed on the jig body; the second driving assembly is configured to drive the plurality of abutting assemblies to move, so that the plurality of abutting assemblies jointly abut the side wall of the mainboard.

9. The self-locking fixture of claim 8, wherein, The self-locking positioning jig further comprises a plurality of guide members, the plurality of guide members are telescopically installed on the jig body and distributed along the contour of the first assembly position and / or the outer contour of the second assembly position.

10. The self-locking fixture of any one of claims 1 to 6, wherein, The jig body is further provided with a transfer station, the transfer station is configured to temporarily store the mainboard detached from the PCB.

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