A PCB double sheet removal and placement device

Abstract

The present invention relates to the technical field of PCB board material transfer, and relates to a PCB double sheet material picking and placing device, comprising: a mobile frame; a telescopic push rod, which is evenly spaced and installed on the mobile frame; a connecting frame, which is connected to the movable rod end of the telescopic push rod; a pneumatic suction cup, which is spaced and arranged on the connecting frame; a first swing arm, which is hingedly installed on the side edge of the connecting frame; the end of the first swing arm is sequentially connected end to end with the second swing arm and the third swing arm; a first hydraulic push rod, one end of which is hingedly installed on the first swing arm, and the movable rod end of which is hinged with the second swing arm; a second hydraulic push rod, one end of which is hingedly installed on the second swing arm, and the movable rod end of which is connected with the third swing arm; a separator, which is installed at the end of the third swing arm. In the present invention, when the pneumatic suction cup adsorbs the plate / film material, after multiple layers of mutual adsorption occur, the separation component can be driven to separate the plate / film material adsorbed on the bottom layer by side pushing and pulling through the cooperation of multiple swing arms and hydraulic push rods, so as to achieve effective separation of the plate / film material.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board material transfer, and in particular to a PCB double sheet removal and placement device. Background Art

[0002] The raw materials required for PCB board production are various types of sheet materials and film materials, which are formed by stacking and pressing each other. Different sheet materials are located in different layers of the PCB board, so a material picking device is needed to frequently pick up different sheet materials. When picking up sheet materials and film materials, there will be negative pressure due to stacking each other. When picking up the top layer of materials, the materials of the next layer or layers will adhere together due to the negative pressure, which will affect the subsequent processing. The existing solution is to optimize the design of the material picking action. After the suction cup absorbs the material, the suction cups on both sides cross up and down to make the adsorbed material and the attached material fall off, or use shaking to make the adsorbed material fall off. The above method has outstanding effects on some sheet materials with a certain hardness, and can effectively prevent double sheets from sticking together, but it is difficult for some softer film materials to fall off due to this action, and the double sheet removal effect is not good. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a PCB double sheet removal and placement device.

[0004] To achieve the above-mentioned purpose, the present invention provides a PCB double sheet removal and placement device, comprising: a moving frame; a linear guide rail, drivingly connected to both sides of the moving frame; a telescopic push rod, evenly installed on the moving frame; a connecting frame, connected to the end of the movable rod of the telescopic push rod for moving up and down; a plurality of pneumatic suction cups, which are arranged on the connecting frame at intervals and move up and down with the connecting frame; a first swing arm, hingedly installed on the side edge of the connecting frame; a deceleration driver, installed on the side edge of the connecting frame and driving the first swing arm to rotate around the hinge point; the first The end of the swing arm is connected end to end with the second swing arm and the third swing arm in sequence; the first hydraulic push rod, one end of which is hingedly mounted on the first swing arm, and the end of its movable rod is hinged with the second swing arm; the first swing arm, the second swing arm and the first hydraulic push rod form a telescopic triangle structure; the second hydraulic push rod, one end of which is hingedly mounted on the second swing arm, and the end of its movable rod is connected with the third swing arm; the second swing arm, the third swing arm and the second hydraulic push rod form a telescopic triangle structure; a separator is installed at the end of the third swing arm, and pushes and separates the adhered materials in the process of following the movement of the third swing arm.

[0005] As a further improvement of the solution, the separation member is a suction nozzle, which is installed at the end of the third swing arm; wherein a through hole is opened on the suction nozzle, and a negative pressure releaser for controlling the opening and closing of the hole is provided on the through hole.

[0006] As a further improvement of the solution, the separation member is a rubber block, and the rubber block is installed at the end of the third swing arm.

[0007] As a further improvement of the scheme, the negative pressure releaser includes: a fixed tube, installed on the third swing arm, and having a plurality of ventilation holes thereon; a top cover, installed on the end of the fixed tube; a piston, slidably arranged on the top cover, with a plug thereon placed in the fixed tube and an end thereof resting against the end of the through-hole of the suction nozzle; a spring, sleeved on the piston, so that the plug remains in a state of resting against the end of the through-hole; an electromagnet, installed on the top cover, and magnetically matched with the top of the piston.

[0008] As a further improvement of the solution, it also includes: a nozzle, which is installed on the third swing arm and is used to receive the gas and spray it toward the pneumatic suction cup.

[0009] As a further improvement of the solution, it also includes: a pad installed at the bottom of the connecting frame, and the pad and the first swing arm are located on the same side.

[0010] As a further improvement of the scheme, it also includes: a side frame installed at the bottom of the linear guide rail; a first screw transmission device installed on the outer side wall of the side frame; a base plate slidably installed on the side frame and threadedly connected to the vertical first transmission screw on the first screw transmission device.

[0011] As a further improvement of the solution, it also includes: a plurality of limiting plates, which are all installed on the side walls of the lower part of the side frame through adjusting bolts; and a sliding opening is opened at the edge of the bottom plate to allow the limiting plates to move.

[0012] As a further improvement of the solution, it also includes: a buffer block, which is rotatably arranged in a notch opened on the limiting plate; the buffer block and the limiting plate are kept in a mutually perpendicular state through a torsion spring.

[0013] As a further improvement of the scheme, it also includes: a conveying roller frame, installed at the bottom of the linear guide rail on the side away from the side frame; a second screw transmission device, installed on the outer side wall of the conveying roller frame; a push block, installed on the second transmission screw of the second screw transmission device; the push block protrudes above the height of the roller and moves laterally between the gaps between the rollers under the drive of the second transmission screw.

[0014] The present invention brings at least the following effects:

[0015] 1. In the present invention, when the pneumatic suction cup adsorbs plates / film materials and multiple layers are adsorbed on each other, the first swing arm, the second swing arm, the third swing arm, the first hydraulic push rod and the second hydraulic push rod can cooperate to drive the separation component to separate the plates / film materials adsorbed on the bottom layer by side pushing and pulling, thereby achieving effective separation of the plates / film materials and avoiding taking up multiple sheets of materials.

[0016] 2. The present invention uses the suction nozzle and the negative pressure releaser as separation parts in coordination with each other, and has an excellent separation effect for some film materials with strong adsorption force. After adsorption and separation by the suction nozzle, the negative pressure releaser is used to quickly detach the adsorbed film material.

[0017] 3. The nozzle arranged on the third swing arm of the present invention can spray gas when separating the adhered materials, and the sprayed gas enters between the material layers, thereby better assisting in separating the adhered materials.

[0018] 4. The limiting plate provided in the present invention can keep the stacked materials neat. At the same time, the buffer block provided can limit part of the materials from being adsorbed and rising when the pneumatic suction cup picks up the materials, and play a buffering role in cleaning the fallen materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a complete schematic diagram of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0021] Figure 3 It is a partial schematic diagram of the present invention.

[0022] Figure 4 For the present invention Figure 3 Schematic diagram after the linear guide is hidden.

[0023] Figure 5 This is a schematic diagram of the first structure of the separation element of the present invention.

[0024] Figure 6 It is a schematic diagram of the second structure of the separation element of the present invention.

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the suction nozzle and the disassembly of the negative pressure releaser of the present invention.

[0026] Figure 8 It is a schematic diagram of the side frame, the first screw transmission device and the bottom plate of the present invention.

[0027] Fig. 9 It is a schematic diagram of the limiting plate, adjusting bolt and buffer block of the present invention.

[0028] Fig.10It is a schematic diagram of the conveying roller frame, the second screw transmission device and the push block of the present invention.

[0029] Fig.11 For the present invention Fig.10 Schematic diagram from another perspective.

[0030] The corresponding relationship between the reference numerals and the names of the components in the accompanying drawings is as follows:

[0031] 1-mobile frame, 101-reinforcement rib, 2-linear guide rail, 3-telescopic push rod, 4-connecting frame, 5-pneumatic suction cup;

[0032] 61-first swing arm, 62-deceleration drive, 63-second swing arm, 64-third swing arm, 65-first hydraulic push rod, 66-second hydraulic push rod;

[0033] 7- Suction nozzle;

[0034] 71- rubber block;

[0035] 8-negative pressure releaser, 81-fixed tube, 82-vent, 83-top cover, 84-piston, 841-plug, 85-spring, 86-electromagnet;

[0036] 9- Nozzle;

[0037] 10- pad;

[0038] 11-side frame, 111-first screw transmission device, 112-first transmission screw, 113-bottom plate;

[0039] 12-limiting plate, 121-sliding opening, 122-adjusting bolt;

[0040] 13-buffer block, 131-notch;

[0041] 14-transmission roller frame, 141-roller wheel, 142-second screw transmission device, 143-second transmission screw, 144-push block;

[0042] 100-Materials. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The present invention specifically discloses a PCB double sheet removal and placement device, such as Figure 1-Figure 7 As shown, it includes: a mobile frame 1 with reinforcing ribs 101 on the upper surface to enhance the structural strength, linear guide rails 2 are connected to both sides of the mobile frame 1, and the linear guide rails 2 drive the mobile frame 1 to reciprocate on the plane. A plurality of telescopic push rods 3 are evenly installed on the mobile frame 1, and the movable rods of the plurality of telescopic push rods 3 are fixedly connected to the connecting frame 4. After the plurality of telescopic push rods 3 work together, the connecting frame 4 can move up and down when the mobile frame 1 moves. A plurality of pneumatic suction cups 5 are fixedly installed on the connecting frame 4, and the pneumatic suction cups 5 are evenly distributed on the connecting frame 4 and move up and down with the connecting frame 4; when in use, the linear guide rails 2 are used to push the linear guide rails 2 to move the mobile frame 1 back and forth. The guide rail 2 is set up on the material picking station where the material 100 needs to be picked up. The material picking station is connected to the conveyor line. The material 100 is piled at the bottom of one side of the linear guide rail 2. After the linear guide rail 2 drives the movable frame 1 to move above the material 100, the telescopic push rod 3 prompts the connecting frame 4 to move down with the pneumatic suction cup 5, and the pneumatic suction cup 5 absorbs the material 100 and then lifts the connecting frame 4, and then the linear guide rail 2 moves the movable frame 1 to the top of the conveyor line, and then the material 100 is placed on the conveyor line; it should be noted that the film material / sheet material referred to below can be collectively referred to as material 100, but a distinction is made due to the different softness of the film material and the sheet material.

[0046] When the pneumatic suction cup 5 takes the material 100, if the materials 100 adhere to each other due to negative pressure, the first swing arm 61 can be driven to rotate by the reduction drive 62 installed on the side edge of the connecting frame 4. The reduction drive 62 is a device composed of a motor and a reducer. Figure 5As shown, the first swing arm 61 is hingedly mounted on the side edge of the connecting frame 4, and the reduction driver 62 drives the first swing arm 61 to swing downward with the hinge point as the center, and the second swing arm 63 and the third swing arm 64 are connected end to end at the end of the first swing arm 61, the second swing arm 63 is hingedly mounted on the end of the first swing arm 61, and the third swing arm 64 is hingedly mounted on the end of the second swing arm 63; one end of the first hydraulic push rod 65 is hingedly mounted on the first swing arm 61, and the movable rod end of the first hydraulic push rod 65 is hingedly connected to the second swing arm 63; at this time, the first swing arm 61, The second swing arm 63 and the first hydraulic push rod 65 form a telescopic triangle structure, and the second swing arm 63 will swing with the extension and retraction of the first hydraulic push rod 65; the second swing arm 63 is hinged to one end of the second hydraulic push rod 66, and the movable rod end of the second hydraulic push rod 66 is hinged to the third swing arm 64; at this time, the second swing arm 63, the third swing arm 64 and the second hydraulic push rod 66 form a telescopic triangle structure, so the third swing arm 64 will swing with the extension and retraction of the second hydraulic push rod 66, and a separation piece is also provided at the end of the third swing arm 64.

[0047] Specifically, after the materials 100 adhere to each other due to negative pressure and are then sucked up by the pneumatic suction cup 5, the first swing arm 61, the second swing arm 63 and the third swing arm 64 swing downward until the separation piece at the end of the third swing arm 64 can be pressed against the material 100 at the bottom layer. Since the material 100 at the top layer has been firmly sucked by the pneumatic suction cup 5, when the separation piece rubs against the material 100 at the bottom layer, the third swing arm 64 is operated to bring the separation piece against the material 100 and move it horizontally, so as to push the material 100 adhered to the bottom layer to one side. After the upper and lower layers of material 100 are separated by displacement, the negative pressure environment between the materials 100 is destroyed, and then the adhered materials 100 can fall off by themselves, thereby realizing the separation of the materials 100 adhered due to negative pressure.

[0048] In this embodiment, the separation member can be a suction nozzle 7, which is installed at the end of the third swing arm 64. When the suction nozzle 7 is used, if the adhered material 100 is a film material, the film material is easily deformed due to its softness. Therefore, when two film materials are adhered to each other, it is difficult to separate the film materials from each other by ordinary horizontal pushing. At this time, the suction nozzle 7 can be used to adsorb the film material adhered to the bottom layer. After the film material is adsorbed, the suction nozzle 7 is moved through the third swing arm 64 to separate the film material, thereby realizing effective separation of the film material, and this separation method is extremely effective.

[0049] according to Figure 5 and Figure 7As shown, in order to better release the film material adsorbed on the suction nozzle 7 and prevent the film material from hanging on the suction nozzle 7, a through hole is opened on the suction nozzle 7, and a negative pressure releaser 8 for controlling the opening and closing of the through hole is provided on the through hole. The negative pressure releaser 8 comprises: a fixed tube 81 installed on the third swing arm 64, a plurality of vents 82 are opened on the fixed tube 81, a top cover 83 is fixedly installed on the end of the fixed tube 81, a piston 84 is slidably arranged on the top cover 83, a plug 841 on the piston 84 is placed in the fixed tube 81 and its end is against the end of the through hole of the suction nozzle 7, a spring 85 is sleeved on the piston 84, and the spring 85 is between the plug 841 and the top cover 83. The spring 85 can keep the plug 841 against the end of the through hole at all times, so as to block the through hole, and an electromagnet 86 is fixedly installed on the top cover 83, and a certain gap is retained between the electromagnet 86 and the top of the piston 84.

[0050] Specifically, during use, the through-hole on the suction nozzle 7 is blocked by the piston 84, so the film material can be adsorbed normally. After the adhered film material is removed, the piston 84 can be adsorbed by the electromagnet 86, and the head of the piston 84 is separated from the through-hole. The negative pressure environment between the suction nozzle 7 and the film material is lost, and the air enters the through-hole along the vent 82. The suction nozzle 7 cannot adsorb the film material, and the film material falls off by itself.

[0051] According to the present invention, when the pneumatic suction cup 5 adsorbs the material 100 and multiple layers are adsorbed to each other, the separation component can be driven to separate the material 100 adsorbed on the bottom layer by side pushing and pulling through the cooperation of multiple swing arms and hydraulic push rods, thereby achieving effective separation of the material 100 and avoiding taking up multiple sheets of material 100. The suction nozzle 7 and the negative pressure releaser 8 are used in cooperation with each other as separation components, and have an excellent separation effect for some film materials with strong adsorption force. After the film material is adsorbed and separated by the suction nozzle 7, the negative pressure releaser 8 can be used to quickly detach the adsorbed film material.

[0052] In one implementation, Figure 6 As shown, the separating member is a rubber block 71, and the rubber block 71 is mounted on the end of the third swing arm 64. After the rubber block 71 follows the third swing arm 64 to move against the material 100, through the effective friction between the rubber block 71 and the material 100, when the third swing arm 64 moves with the rubber block 71, the materials 100 adhered to each other can be pushed away by the rubber block 71. The rubber block 71 is more suitable for plate-like materials 100, which are not easy to deform, and can be separated quickly by directly pushing the adhered plate sideways.

[0053] In one implementation, Figure 5As shown, it also includes: a nozzle 9 installed on the third swing arm 64, which is connected to the gas through an external air supply device and sprays gas toward the pneumatic suction cup 5. Specifically, when in use, it can be used in conjunction with the suction nozzle 7. After the suction nozzle 7 sucks the adhered film material, the adsorbed film material is separated into a gap through the third swing arm 64, and then the nozzle 9 can be used to spray air toward the gap between the two film materials, thereby separating the two adhered film materials, so as to better assist in separating the adhered material 100.

[0054] In one implementation, Figure 4 As shown, it also includes: a pad 10 installed at the bottom of the connecting frame 4, the pad 10 and the first swing arm 61 are located on the same side, and the height of the pad 10 shall not exceed the height of the pneumatic suction cup 5. Specifically, when in use, the pad 10 is used to hold the material 100. When the suction nozzle 7 sucks the material 100, the pad 10 holds the material 100, which can prevent the middle of the material 100 from sinking inward and failing to be sucked. This situation can be avoided by holding the pad 10.

[0055] In one implementation, Figure 2 , Figure 8 and Fig. 9 As shown, it also includes: a side frame 11 fixedly installed at the bottom of one side of the linear guide rail 2, a first screw transmission device 111 is installed on the outer side walls on both sides of the side frame 11, and a bottom plate 113 is slidably connected in a vertical sliding manner in the side frame 11, and the four sides of the bottom plate 113 are threadedly connected with the vertical first transmission screw 112 on the first screw transmission device 111, and the first screw transmission device 111 can drive the bottom plate 113 to move in the up and down directions; the material 100 to be taken can be directly placed on the bottom plate 113, and the mobile frame 1 moves to the top of the bottom plate 113 to take the material 100, and as the material 100 is reduced, the bottom plate 113 can be driven to move upward by the first screw transmission device 111 so that the pneumatic suction cup 5 can suck the material 100.

[0056] Among them, multiple limiting plates 12 are installed on the side wall of the lower part of the side frame 11 through adjusting bolts 122, the adjusting bolts 122 are rotatably connected to the side frame 11, and the limiting plates 12 are threadedly connected to the adjusting bolts 122. A sliding opening 121 allowing the limiting plates 12 to move is opened at the edge of the bottom plate 113. Therefore, the position of the limiting plates 12 is adjusted by adjusting the bolts 122, so that the limiting plates 12 are close to the edge of the materials 100, so that the materials 100 stacked on the bottom plate 113 can be placed neatly, avoiding the situation where the materials 100 are skewed and irregularly stacked, causing the materials 100 to be skewed during the transmission process of the subsequent conveyor line.

[0057] Among them, a notch 131 is also opened on the limiting plate 12, and a buffer block 13 is rotatably installed in the notch 131. The buffer block 13 maintains a mutually perpendicular state with the limiting plate 12 through a torsion spring. When the pneumatic suction cup 5 adsorbs the material 100 and then lifts it upward, the buffer block 13 can scrape the material 100 from the side edge of the material 100. If there is easy-to-separate material 100, it will fall off under the scraping of the buffer block 13. If the material 100 falls off under the separation of the separation piece, it will fall back onto the bottom plate 113 under the action of the buffer block 13, so as to avoid the side edge of the material 100 colliding with the material 100 stacked below and causing bump damage.

[0058] In one implementation, Figure 2 , Fig.10 and Fig.11 As shown, it also includes: a conveying roller frame 14 fixedly installed at the bottom of the linear guide rail 2 on the side away from the side frame 11, a second screw transmission device 142 fixedly installed on the outer side wall of the conveying roller frame 14, and a push block 144 is connected to the second transmission screw 143 of the second screw transmission device 142. The push block 144 protrudes above the height of the roller 141 and moves laterally between the gaps of the rollers 141 under the drive of the second transmission screw 143; specifically, the material 100 taken out from the bottom plate 113 will eventually fall on the conveying roller frame 14. As the conveying roller frame 14 is conveyed, the material 100 needs to be conveyed in the center or close to the edge of the conveying roller frame 14. At this time, the push block 144 can be driven by the second screw transmission device 142 to move, so as to push the conveyed material 100 to the designated area.

[0059] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A PCB double sheet removal and placement device, comprising: A movable frame (1); a linear guide rail (2) drivingly connected to both sides of the movable frame (1); The telescopic push rod (3) is evenly installed on the movable frame (1); the connecting frame (4) is connected to the end of the movable rod of the telescopic push rod (3) and moves up and down; a plurality of pneumatic suction cups (5) are arranged at intervals on the connecting frame (4) and move up and down following the connecting frame (4); the pneumatic suction cups (5) are characterized in that they also include: a first swing arm (61) hingedly installed on the side edge of the connecting frame (4); a speed reduction driver (62) installed on the side edge of the connecting frame (4) and driving the first swing arm (61) to rotate around the hinge point; the ends of the first swing arm (61) are connected end to end with the second swing arm (63) and the third swing arm (64); the first hydraulic push rod (6 5), one end of which is hingedly mounted on the first swing arm (61), and the end of its movable rod is hingedly connected to the second swing arm (63); the first swing arm (61), the second swing arm (63) and the first hydraulic push rod (65) together form a telescopic triangle structure; the second hydraulic push rod (66), one end of which is hingedly mounted on the second swing arm (63), and the end of its movable rod is connected to the third swing arm (64); the second swing arm (63), the third swing arm (64) and the second hydraulic push rod (66) together form a telescopic triangle structure; a separation member is mounted on the end of the third swing arm (64), and pushes and separates the adhered material (100) in the process of following the movement of the third swing arm (64); The separation member is a suction nozzle (7), and the suction nozzle (7) is installed at the end of the third swing arm (64); The suction nozzle (7) is provided with a through hole, and a negative pressure releaser (8) for controlling the opening and closing of the through hole is provided on the through hole; The negative pressure releaser (8) comprises: a fixed tube (81), which is mounted on the third swing arm (64) and has a plurality of vent holes (82); a top cover (83), which is mounted on the end of the fixed tube (81); a piston (84), which is slidably mounted on the top cover (83), and a plug (841) thereon is placed in the fixed tube (81) and its end is against the end of the through-hole of the suction nozzle (7); a spring (85), which is sleeved on the piston (84) to keep the plug (841) against the end of the through-hole; an electromagnet (86), which is mounted on the top cover (83) and is magnetically matched with the top of the piston (84); It also comprises: a nozzle (9) mounted on the third swing arm (64) and used for receiving gas and spraying it in the direction of the pneumatic suction cup (5).

2. The PCB double sheet removal and placing device according to claim 1 is characterized in that: The separation member is a rubber block (71), and the rubber block (71) is installed at the end of the third swing arm (64).

3. The PCB double sheet removal and placing device according to claim 2 is characterized in that: Also includes: A pad (10) is installed at the bottom of the connecting frame (4), and the pad (10) and the first swing arm (61) are located on the same side.

4. The PCB double sheet removal and placing device according to claim 1 is characterized in that: Also includes: A side frame (11) is mounted on the bottom of the linear guide rail (2); a first screw transmission device (111) is mounted on the outer side wall of the side frame (11); and a bottom plate (113) is slidably mounted on the side frame (11) and is threadedly connected to a vertical first transmission screw (112) on the first screw transmission device (111).

5. The PCB double sheet removal and placing device according to claim 4 is characterized in that: Also includes: A plurality of limiting plates (12) are provided, and each of the limiting plates (12) is mounted on the side wall at the lower portion of the side frame (11) via adjusting bolts (122); a sliding opening (121) is provided at a position close to the edge of the bottom plate (113) to allow the limiting plates (12) to move.

6. The PCB double sheet removal and placing device according to claim 5 is characterized in that: Also includes: The buffer block (13) is rotatably disposed in a notch (131) provided on the limiting plate (12); the buffer block (13) and the limiting plate (12) are maintained in a mutually perpendicular state via a torsion spring.

7. The PCB double sheet removal and placing device according to claim 6 is characterized in that: Also includes: A conveying roller frame (14) is installed at the bottom of the linear guide rail (2) on the side away from the side frame (11); a second screw transmission device (142) is installed on the outer side wall of the conveying roller frame (14); a push block (144) is installed on the second transmission screw (143) of the second screw transmission device (142); the push block (144) protrudes above the height of the roller (141) and moves laterally between the gaps of the roller (141) under the drive of the second transmission screw (143).

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