PCB (Printed Circuit Board) chip mounter matched with SMT (Surface Mount Technology) chip mounter

Abstract

The utility model discloses a PCB (Printed Circuit Board) chip mounting device matched with an SMT (Surface Mount Technology) chip mounter for use, which relates to the field of PCB chip mounting processing and comprises a bottom plate arranged on the SMT chip mounter; the bearing box is installed on the bottom plate, the top end of the bearing box is arranged in an opening shape, and a concave table used for supporting the PCB is arranged on the side wall of the top end of the bearing box; the ejector pins are arranged in the bearing box and used for conducting auxiliary supporting on the PCB, and moving driving pieces are arranged at the bottoms of the ejector pins; according to the PCB chip mounting device matched with the SMT chip mounter for use, the bearing box and the detachable ejector pin are arranged, so that PCBs of different versions and different models can be effectively supported, various jigs do not need to be used, the manufacturing cost of an enterprise is reduced, turnover and double-sided chip mounting of the PCBs can be realized on the same station through the integrated turnover mechanism, and the production efficiency is improved. The problem that an additional turn-over step is needed in a traditional process is avoided, and the production process is greatly simplified.

Description

Technical Field

[0001] The utility model relates to a PCB board patch processing technology, in particular to a PCB board patch device used in conjunction with an SMT patch machine. Background Art

[0002] During the manufacturing process of LED display screen modules, the lamp surface and driver surface are produced in different ways, resulting in differences in their production processes. The driver surface components are located at a distance from the edge of the PCB, so during the production process, the driver surface can be produced normally without the need for a jig support. However, since the lamp surface is closer to the edge of the pad and the lamp beads are even flush with the edge of the PCB after mounting, a jig support is required during the production process to meet the requirements of the product's entire board mounting. In the actual production process, for different models and versions, the arrangement of the driver surface components is not uniform, and the number of components is inconsistent. When the module is placed on the jig, the components need to be made clear. Different versions and models require the use of multiple jigs to cooperate with production.

[0003] Since different versions and models require different jigs to support the bottom of the PCB board to achieve PCB board placement, the production process is complicated and costly, which is a heavy burden on corporate production. In addition, when performing double-sided placement on the PCB board, the PCB board needs to be transported to another station for flipping over and then transported to the SMT placement machine for placement, resulting in low placement efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a PCB board patch device for use with an SMT patch machine, so as to solve the problem in the prior art that different versions and models require different jigs to support the bottom of the PCB board to achieve the patch of the PCB board, resulting in a complicated production process and high costs, which is a heavy burden on enterprise production. In addition, when patching double-sided PCB boards, the PCB board needs to be transported to another station for turning over and then transported to the SMT patch machine for patching, resulting in low patch efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a PCB board mounting device used in conjunction with an SMT mounting machine, comprising:

[0006] Base plate, which is mounted on the SMT placement machine;

[0007] The carrying box is mounted on the bottom plate, the top of the carrying box is open, and the top side wall of the carrying box is provided with a concave platform for supporting the PCB board;

[0008] A plurality of ejectors are provided inside the carrying box and are used to provide auxiliary support for the PCB board. A movable driving member is provided at the bottom of the ejectors, and the movable driving member is used to drive the ejectors to move along the height direction of the carrying box.

[0009] The flipping mechanism is installed on the carrying box and is used to clamp and flip the PCB board. The flipping mechanism includes an A drive component and two positioning components. The two positioning components are symmetrically arranged on both sides of the carrying box. One side of the two positioning components is respectively connected to the A drive component. The A drive component is used to drive the two positioning components to move toward or in opposite directions. The positioning assembly includes a positioning part, a B drive component and a flipping assembly. The other side of the positioning part is connected to the B drive component for driving the positioning part to move along the height direction of the carrying box. The flipping assembly includes a C shaft and a C drive component. One side of the C shaft is connected to the positioning part, and the other side of the C shaft is connected to the C drive component for driving the C shaft to rotate around its own axis.

[0010] Furthermore, an inserting plate is provided inside the carrying box, and a plurality of inserting holes for the ejector pins to be inserted are evenly provided on the inserting plate.

[0011] Furthermore, through holes are provided on both side walls of the carrying box, the through holes are connected to the interior of the carrying box, and the through holes are arranged on the upper part of the plug board, and the through holes are connected to the external vacuum generator through a pipeline.

[0012] Furthermore, the jack passes through the plug board, the outer wall of the plug board is slidably connected to the inner wall of the carrying box, the movable driving member is a telescopic driving member A, and the lower surface of the plug board is fixedly connected to the movable end of the telescopic driving member A.

[0013] Furthermore, the positioning member includes an A bracket, on which an A rotating shaft is fixedly mounted, and the A rotating shaft is externally rotatably connected to two A connecting rods, which are symmetrically arranged, and one side of the two A connecting rods is fixedly connected to a torsion spring, and the other ends of the two torsion springs are fixedly connected to the A rotating shaft, and the ends of the two A connecting rods away from the A rotating shaft are fixedly connected to the B rotating shaft, and the bottom ends of the two B rotating shafts are rotatably connected to the A limiting wheels.

[0014] Furthermore, the positioning member also includes a B connecting rod fixedly connected to the side wall of the B rotating shaft, and the end of the B connecting rod away from the B rotating shaft is rotatably connected to the B limiting wheel, and one side of the B connecting rod is connected to an E drive assembly that can drive the B connecting rod to rotate around the axis of the B rotating shaft.

[0015] Furthermore, the E drive assembly includes a guide rail, which is fixedly mounted on the A bracket. A transverse groove is provided on the guide rail. A sliding rod is slidably connected to the inner wall of the transverse groove. A C connecting rod is fixedly connected to the top of the sliding rod. The end of the C connecting rod away from the sliding rod is fixedly connected to the B connecting rod.

[0016] Furthermore, the B drive assembly includes a B bracket, on which a B telescopic drive member is fixedly mounted, the movable end of the B telescopic drive member is fixedly connected to the C bracket, the lower surface of the C bracket is fixedly connected to a guide rod, the outer side wall of the guide rod is slidingly connected to the B bracket, the flip assembly is mounted on the C bracket, the outer side wall of the C rotating shaft is rotatably connected to the C bracket, and one end of the C rotating shaft is fixedly connected to the A bracket.

[0017] Furthermore, the C drive assembly is an A rotary drive component, which is fixedly mounted on the C bracket, and the output shaft end of the A rotary drive component is fixedly connected to the end of the C rotating shaft.

[0018] Furthermore, the A drive assembly includes a gear, with racks meshing on both sides of the gear, one side of the two racks being slidably connected to the inner wall of the carrying box, the ends of the two racks away from each other are fixedly connected to a cross bar, the outer walls of the two cross bars are slidably connected to the carrying box, the ends of the two cross bars away from the gear are respectively fixedly connected to the adjacent B brackets, and one side of the gear is connected to a B rotating drive component for driving the gear to rotate around the gear axis.

[0019] Compared with the existing technology, the PCB board placement device provided by the utility model for use with an SMT placement machine can effectively support PCB boards of different versions and models by providing a carrying box and detachable ejector pins, eliminating the need for multiple jigs, thereby reducing the manufacturing cost of the enterprise;

[0020] The integrated flipping mechanism enables PCB board flipping and double-sided patching at the same workstation, avoiding the problem of additional flipping steps required in traditional processes and greatly simplifying the production process. The set A and B limit wheels can effectively prevent vibration and displacement during the PCB board flipping process, ensuring patch accuracy and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall external structure provided by an embodiment of the present utility model;

[0023] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the coordination of the base plate, the carrying box, the ejector pins, the through holes, and the insert plate provided in an embodiment of the present utility model;

[0025] Figure 4 A schematic diagram of the positioning member structure provided in an embodiment of the present utility model;

[0026] Figure 5 A schematic diagram of the coordination of the B rotating shaft, B connecting rod, B limiting wheel, sliding rod and C connecting rod provided in an embodiment of the present utility model;

[0027] Figure 6 A schematic diagram of the structure of the B drive assembly provided in an embodiment of the present utility model;

[0028] Figure 7 A schematic diagram of the structure of the drive assembly A provided in an embodiment of the present utility model;

[0029] Figure 8 The embodiment of the present invention provides Figure 2 A is an enlarged schematic diagram.

[0030] Description of reference numerals:

[0031] 1. Bottom plate; 2. Carrying box; 3. Ejector pin; 4. Flipping mechanism; 41. Positioning part; 411. Bracket A; 412. Rotating shaft A; 413. Connecting rod A; 414. Torsion spring; 415. Rotating shaft B; 416. Limiting wheel A; 417. Connecting rod B; 418. Limiting wheel B; 419. Guide rail; 4191. Sliding rod; 4192. Connecting rod C; 42. Driving assembly A; 421. Gear; 422. Rack; 423. Cross bar; 424. Rotating driving member B; 43. Driving assembly B; 431. Bracket B; 432. Telescopic driving member B; 433. Bracket C; 434. Guide rod; 44. Flipping assembly; 441. Rotating shaft C; 442. Driving assembly C; 5. Insert plate; 6. Moving driving member; 7. Through hole. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figures 1 to 2 , a PCB board mounting device used in conjunction with an SMT mounting machine, comprising:

[0034] Base plate 1, which is installed on the SMT placement machine;

[0035] The carrying box 2 is mounted on the base plate 1. The top of the carrying box 2 is open, and the top side wall of the carrying box 2 is provided with a recessed platform for supporting the PCB board. A plurality of mounting holes are opened at the bottom of the carrying box 2, and a plurality of positioning rods matching the mounting holes are provided on the base plate 1. The base plate 1 is fixed to the SMT placement machine by a detachable connection method such as bolts, so that the carrying box 2 can be easily disassembled and assembled on the SMT placement machine.

[0036] A plurality of ejector pins 3 are provided inside the carrying box 2 and are used to provide auxiliary support for the PCB board;

[0037] The flipping mechanism 4 is installed on the carrying box 2 and is used to clamp and flip the PCB board. The flipping mechanism 4 includes an A drive component 42 and two positioning components. The two positioning components are symmetrically arranged on both sides of the carrying box 2. One side of the two positioning components is respectively connected to the A drive component 42. The A drive component 42 is used to drive the two positioning components to move toward or in the opposite direction. The positioning component includes a positioning member 41, a B drive component 43 and a flipping component 44. The other side of the positioning member 41 is connected to the B drive component 43 for driving the positioning member 41 to move along the height direction of the carrying box 2. The flipping component 44 includes a C shaft 441 and a C drive component 442. One side of the C shaft 441 is connected to the positioning member 41, and the other side of the C shaft 441 is connected to the C drive component 442 for driving the C shaft 441 to rotate around its own axis.

[0038] The existing technology requires the use of jigs during the lamp surface mounting process. Different versions and models require different jigs to support the bottom of the PCB board to achieve PCB board mounting, resulting in a complicated production process and high costs, which is a heavy burden on enterprises. In addition, when mounting chips on both sides of the PCB board, the PCB board needs to be transported to another station for flipping and then transported to the SMT chip mounting machine for mounting, resulting in low mounting efficiency.

[0039] To this end, the present application sets up a carrying box 2, places the PCB board on the concave platform on the top side wall, and supports the PCB through multiple ejector pins 3 to realize the veneering of the PCB board. When the PCB needs to be venerated, the ejector pins 3 are driven upward by the mobile driving member 6, and the ejector pins 3 lift the PCB board. After the PCB board is lifted away from the carrying box 2, the A driving component 42 is controlled to drive the two positioning components to move toward each other, and the positioning component 41 in the positioning component clamps and fixes the PCB board, and then the positioning component 41 is driven by the B driving component 43 to move upward along the height direction of the carrying box 2. , so that the PCB board moves to a position where it can be flipped. At this time, the C drive component 442 drives the C shaft 441 to rotate, and the C shaft 441 drives the positioning member 41 to rotate, thereby realizing the flipping of the PCB board. After the flipping is completed, the positioning member 41 is driven by the B drive component 43 to move downward along the height direction of the carrying box 2, so that the PCB board moves downward. After the PCB board moves down to the limit position, the A drive component 42 is controlled to drive the two positioning components to move in the opposite direction, and the PCB board falls onto the carrying box 2, so that the patch work on the other side of the PCB board can be carried out, effectively improving the patch efficiency of the PCB board.

[0040] See also Figures 2 to 3In an embodiment of the utility model, the bearing box 2 internally is provided with the plugboard 5, the plugboard 5 is evenly provided with a plurality of jack for the insertion of the contact pin 3, so that the contact pin 3 can be inserted into the jack at different positions to support different versions and different models of PCB, and the device can replace the lamp surface mounting jig to save manufacturing cost for enterprises,

[0041] In an embodiment of the utility model, the two side walls of the bearing box 2 are provided with through holes 7, the through holes 7 are communicated with the inside of the bearing box 2, and the through holes 7 are arranged on the upper part of the plugboard 5, the through holes 7 are connected with the outside vacuum generator through pipelines, the suction inlet of the vacuum generator is communicated with the through holes 7, and the exhaust port of the vacuum generator is directly communicated with the atmosphere, so that the gas in the bearing box 2 is extracted by the vacuum pump to generate negative pressure in the bearing box 2, and the PCB is adsorbed on the bearing box 2 under the action of the negative pressure, so that the PCB is more stable.

[0042] In an embodiment of the utility model, the jack penetrates the plugboard 5, the outer side wall of the plugboard 5 is slidably connected with the inner wall of the bearing box 2, the moving driving part 6 is an A telescopic driving part, the lower surface of the plugboard 5 is fixedly connected with the moving end of the A telescopic driving part, the A telescopic driving part is a telescopic cylinder or a hydraulic cylinder, and the A telescopic driving part is fixedly installed in the inside of the bearing box 2.

[0043] The moving end of the A telescopic driving part drives the plugboard 5 to move, the plugboard 5 drives the contact pin 3 to move when moving, the contact pin 3 lifts the PCB, so that the positioning parts 41 in the two positioning assemblies move towards each other to clamp the PCB to realize the overturning of the PCB.

[0044] Please refer to Figure 4 In an embodiment of the utility model, the positioning part 41 comprises an A support 411, the A support 411 is fixedly installed with an A rotating shaft 412, two A connecting rods 413 are rotatably connected outside the A rotating shaft 412, the two A connecting rods 413 are symmetrically arranged, a torsional spring 414 is fixedly connected to one side of each of the two A connecting rods 413, the other end of each of the two torsional springs 414 is fixedly connected with the A rotating shaft 412, a B rotating shaft 415 is fixedly connected to the end of each of the two A connecting rods 413 away from the A rotating shaft 412, and an A limiting wheel 416 is rotatably connected to the bottom end of each of the two B rotating shafts 415.

[0045] When the A driving assembly 42 drives the two positioning assemblies to move towards each other or in the opposite direction, the positioning parts 41 in the two positioning assemblies move towards each other or in the opposite direction, when the two positioning parts 41 move towards each other, the A limiting wheel 416 in the positioning part 41 first contacts the side edge of the PCB, the A limiting wheel 416 moves relative to the side edge of the PCB in the continuous movement process of the positioning part 41, at this time, the torsional spring 414 is stressed and twisted, and the four A limiting wheels 416 clamp and fix the PCB;

[0046] When the PCB board is separated from the carrying box 2, the PCB board is lifted up by the ejector pin 3. During and after the PCB board is lifted up, there is no limiting member to effectively limit the PCB board. The PCB board is easily displaced by vibrations from a vibration source such as an SMT placement machine, resulting in the PCB board being unable to be accurately placed on the carrying box 2 for placement on the other side after being flipped over. Therefore, in one embodiment of the present utility model, the positioning member 41 further includes a B-link 417 fixedly connected to a side wall of the B-rotating shaft 415. The end of the B-link 417 away from the B-rotating shaft 415 is rotatably connected to a B-limiting wheel 418. One side of the B-link 417 is connected to an E-drive assembly capable of driving the B-link 417 to rotate around the axis of the B-rotating shaft 415.

[0047] When the A limiting wheel 416 contacts and abuts against the edge of the PCB, the E driving assembly drives the B connecting rod 417 to rotate around the axis of the B rotating shaft 415. The B connecting rod 417 drives the B limiting wheel 418 to rotate to the other side of the PCB and abut against the other side of the PCB. Under the action of the A limiting wheel 416 and the B limiting wheel 418, the PCB is repositioned and the four sides of the PCB are clamped and fixed, effectively ensuring the stability of the PCB when it is turned over.

[0048] In one embodiment of the present invention, the outer side walls of the A limiting wheel 416 and the B limiting wheel 418 are covered with anti-slip pads to increase the friction when in contact with the PCB board, thereby clamping the PCB board more firmly.

[0049] In one embodiment of the present invention, the E drive assembly includes a guide rail 419, which is fixedly mounted on the A bracket 411. The guide rail 419 has a transverse groove, and a slide bar 4191 is slidably connected to the inner wall of the transverse groove. The top of the slide bar 4191 is fixedly connected to the C link 4192, and the end of the C link 4192 away from the slide bar 4191 is fixedly connected to the B link 417.

[0050] When the two positioning members 41 move toward each other, the A limit wheel 416 in the positioning member 41 first contacts the side of the PCB board, the A connecting rod 413 rotates relative to the A rotating shaft 412, the torsion spring 414 is twisted by force, and the A connecting rod 413 drives the B connecting rod 417 and the C connecting rod 4192 to rotate through the B rotating shaft 415. The sliding rod 4191 on the C connecting rod 4192 slides along the transverse groove on the guide rail 419, and the sliding rod 4191 drives the B limit wheel 418 to rotate around the axis of the B rotating shaft 415 through the C connecting rod 4192, thereby realizing the contact and limit of the B limit wheel 418 on the other side of the PCB board.

[0051] See also Figure 1 、 Figure 2 、 Figure 6 and Figure 7In one embodiment of the present utility model, the B drive assembly 43 includes a B bracket 431, on which a B telescopic drive member 432 is fixedly mounted. The B telescopic drive member 432 is a telescopic cylinder or a hydraulic cylinder. The movable end of the B telescopic drive member 432 is fixedly connected to the C bracket 433. The lower surface of the C bracket 433 is fixedly connected to a guide rod 434. The outer wall of the guide rod 434 is slidably connected to the B bracket 431. The flip assembly 44 is mounted on the C bracket 433. The outer wall of the C rotating shaft 441 is rotatably connected to the C bracket 433. One end of the C rotating shaft 441 is fixedly connected to the A bracket 411.

[0052] When the moving end of the B telescopic driving member 432 is extended or retracted, it drives the C bracket 433 to move up and down. The C bracket 433 drives the C rotating shaft 441 to drive the positioning member 41 to move up and down. Thus, the two positioning members 41 can cooperate to drive the PCB to move up and down, so that the PCB is away from the carrying box 2 to achieve space for the PCB to turn over.

[0053] In one embodiment of the present invention, the C drive assembly 442 is an A rotary drive member, which is fixedly mounted on the C bracket 433, and the output shaft end of the A rotary drive member is fixedly connected to the end of the C rotating shaft 441, and the A rotary drive member is a rotary cylinder or a motor;

[0054] The C rotating shaft 441 is driven to rotate by the A rotating drive member, and the C rotating shaft 441 drives the positioning member 41 to rotate around the axis of the C rotating shaft 441 through the A bracket 411, so that the two positioning members 41 drive the PCB board to rotate around the axis of the C rotating shaft 441, thereby realizing the flipping of the PCB board.

[0055] See also Figure 2 and Figure 7 In one embodiment of the present utility model, the A driving assembly 42 includes a gear 421, and racks 422 are meshed on both sides of the gear 421. One side of the two racks 422 is slidably connected to the inner wall of the carrying box 2, and the ends of the two racks 422 away from each other are fixedly connected to a cross bar 423. The outer walls of the two cross bars 423 are slidably connected to the carrying box 2. The ends of the two cross bars 423 away from the gear 421 are respectively fixedly connected to the B brackets 431 adjacent thereto. One side of the gear 421 is connected to a B rotating driving member 424 for driving the gear 421 to rotate around the axis of the gear 421. The B rotating driving member 424 is a rotating cylinder or a motor. The B rotating driving member is fixedly installed inside the carrying box 2, and the gear 421 is fixedly sleeved on the outside of the output shaft of the B rotating driving member 424.

[0056] When the two positioning components need to move toward or in opposite directions, the gear 421 is driven to rotate through the B rotary drive member 424, and the gear 421 drives the two racks 422 to move in opposite directions. The racks 422 drive the B bracket 431 to move through the cross bar 423, and the B bracket 431 drives the positioning components to move, thereby realizing the toward or opposite direction movement of the two positioning components, thereby realizing the clamping and release of the PCB board by the two positioning components 41.

[0057] In one embodiment of the present invention, a corresponding control unit can be provided for use in conjunction with the present invention. The control unit can be selected from any controller and connected to the electrical components in the present application to control the opening and closing operations of the electrical components. This part is prior art. Here, a single-chip microcomputer can be provided as a control unit for demonstration. The single-chip microcomputer in this embodiment is a typical embedded microcontroller (Microcontroller Unit), which is composed of an arithmetic unit, a controller, a memory, an input and output device, etc., and is equivalent to a microcomputer. Compared with the general-purpose microprocessor used in personal computers, it emphasizes self-supply (no external hardware required) and cost saving. Its greatest advantage is that it is small in size and can be placed inside the instrument, but it has a small storage capacity, a simple input and output interface, and low functional consumption.

[0058] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A PCB board mounting device used in a matching SMT mounting machine, characterized in that: include: A base plate (1) mounted on an SMT placement machine; A carrying box (2) is mounted on the bottom plate (1), the top of the carrying box (2) is open, and the top side wall of the carrying box (2) is provided with a concave platform for supporting the PCB board; A plurality of ejector pins (3) are arranged inside the carrying box (2) and are used to provide auxiliary support for the PCB board; a movable driving member (6) is provided at the bottom of the ejector pins (3); the movable driving member (6) is used to drive the ejector pins (3) to move along the height direction of the carrying box (2); A turning mechanism (4) is mounted on the carrying box (2) and is used to clamp and turn the PCB board. The turning mechanism (4) includes an A drive component (42) and two positioning components. The two positioning components are symmetrically arranged on both sides of the carrying box (2). One side of the two positioning components is respectively connected to the A drive component (42). The A drive component (42) is used to drive the two positioning components to move toward or in opposite directions. The positioning component includes a positioning member (41), a B drive component (43) and a turning component (44). The other side of the positioning member (41) is connected to the B drive component (43) for driving the positioning member (41) to move along the height direction of the carrying box (2). The turning component (44) includes a C rotating shaft (441) and a C driving component (442). One side of the C rotating shaft (441) is connected to the positioning member (41), and the other side of the C rotating shaft (441) is connected to the C driving component (442) for driving the C rotating shaft (441) to rotate around its own axis.

2. A PCB board mounting device for use with an SMT mounting machine according to claim 1, characterized in that: An inserting plate (5) is provided inside the carrying box (2), and a plurality of inserting holes for inserting the ejector pins (3) are evenly provided on the inserting plate (5).

3. A PCB board mounting device for use with an SMT mounting machine according to claim 2, characterized in that: Through holes (7) are provided on both side walls of the carrying box (2), the through holes (7) are connected to the interior of the carrying box (2), and the through holes (7) are arranged on the upper part of the plug board (5). The through holes (7) are connected to an external vacuum generator through a pipeline.

4. The PCB mounting device for use with an SMT mounting machine according to claim 2, characterized in that: The jack passes through the plug board (5), the outer wall of the plug board (5) is slidably connected to the inner wall of the carrying box (2), the movable driving member (6) is an A telescopic driving member, and the lower surface of the plug board (5) is fixedly connected to the movable end of the A telescopic driving member.

5. The PCB mounting device for use with an SMT mounting machine according to claim 1, characterized in that: The positioning member (41) includes an A bracket (411), an A rotating shaft (412) is fixedly mounted on the A bracket (411), and the A rotating shaft (412) is externally rotatably connected to two A connecting rods (413), the two A connecting rods (413) are symmetrically arranged, one side of the two A connecting rods (413) is fixedly connected to a torsion spring (414), the other ends of the two torsion springs (414) are fixedly connected to the A rotating shaft (412), one end of the two A connecting rods (413) away from the A rotating shaft (412) is fixedly connected to a B rotating shaft (415), and the bottom ends of the two B rotating shafts (415) are rotatably connected to an A limiting wheel (416).

6. The PCB mounting device for use with an SMT mounting machine according to claim 5, characterized in that: The positioning member (41) further comprises a B connecting rod (417) fixedly connected to the side wall of the B rotating shaft (415); one end of the B connecting rod (417) away from the B rotating shaft (415) is rotatably connected to a B limiting wheel (418); and one side of the B connecting rod (417) is connected to an E driving assembly capable of driving the B connecting rod (417) to rotate around the axis of the B rotating shaft (415).

7. The PCB mounting device for use with an SMT mounting machine according to claim 6, characterized in that: The E drive assembly includes a guide rail (419), which is fixedly mounted on the A bracket (411). A transverse groove is provided on the guide rail (419), and a slide rod (4191) is slidably connected to the inner wall of the transverse groove. A C connecting rod (4192) is fixedly connected to the top of the slide rod (4191), and an end of the C connecting rod (4192) away from the slide rod (4191) is fixedly connected to the B connecting rod (417).

8. The PCB mounting device for use with an SMT mounting machine according to claim 5, characterized in that: The B drive assembly (43) includes a B bracket (431), a B telescopic drive member (432) is fixedly mounted on the B bracket (431), a movable end of the B telescopic drive member (432) is fixedly connected to the C bracket (433), a guide rod (434) is fixedly connected to the lower surface of the C bracket (433), an outer side wall of the guide rod (434) is slidably connected to the B bracket (431), a flip assembly (44) is mounted on the C bracket (433), an outer side wall of the C rotating shaft (441) is rotatably connected to the C bracket (433), and one end of the C rotating shaft (441) is fixedly connected to the A bracket (411).

9. The PCB mounting device for use with an SMT mounting machine according to claim 8, characterized in that: The C drive assembly (442) is an A rotary drive member, which is fixedly mounted on the C bracket (433), and the output shaft end of the A rotary drive member is fixedly connected to the end of the C rotating shaft (441).

10. The PCB mounting device for use with an SMT mounting machine according to claim 8, characterized in that: The A driving assembly (42) includes a gear (421), both sides of the gear (421) are meshed with racks (422), one side of the two racks (422) is slidably connected to the inner wall of the carrying box (2), the ends of the two racks (422) away from each other are fixedly connected to a cross bar (423), the outer side walls of the two cross bars (423) are slidably connected to the carrying box (2), the ends of the two cross bars (423) away from the gear (421) are fixedly connected to the adjacent B brackets (431), and one side of the gear (421) is connected to a B rotating driving member (424) for driving the gear (421) to rotate around the axis of the gear (421).

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