PCB inner layer pre-stacking equipment and pre-stacking process

Abstract

The invention discloses PCB inner layer pre-stacking equipment and a pre-stacking process, and relates to the technical field of electronic component manufacturing, the PCB inner layer pre-stacking equipment comprises an equipment box, a conveyor is fixedly arranged at one end of the bottom of the inner wall of the equipment box, positioning mechanisms are symmetrically arranged on the two sides of the conveyor, eight containing mechanisms are arranged at the other end of the bottom of the inner wall of the equipment box, and a stacking mechanism is arranged on one side of the bottom of the inner wall of the equipment box; the stacking mechanism comprises a first rotating shaft, a transmission mechanism is arranged below the first rotating shaft, the transmission mechanism comprises a second rotating shaft, and two symmetrically-arranged rotating mechanisms are arranged at one end of the second rotating shaft; by arranging the stacking mechanism, the transmission mechanism, the rotating mechanism and the containing mechanism, the stacking mechanism can work to drive the transmission mechanism and the rotating mechanism to operate, then the containing mechanism is driven to rotate, the occupied area of the device is reduced, and the pre-stacking efficiency is improved; and the positioning mechanism is arranged, so that the positioning mechanism works, and the four-layer PCB can be positioned.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component manufacturing, and in particular to a PCB inner layer pre-stacking device and a pre-stacking process. Background Art

[0002] PCB, or printed circuit board, is an important electronic component and an important part of electronic products. The main function of PCB is to transfer the circuit graphics on the circuit board to the printed circuit to form a circuit structure with certain functions. The inner layer pre-stacking of PCB is an important step in the PCB production process. It belongs to the stacking preparation stage in the production of multi-layer PCB boards. Specifically, the inner layer pre-stacking is a work performed before the lamination of multi-layer PCB boards. The main purpose is to align, align or register the inner layer boards, prepregs (also called prepregs) and other loose materials with auxiliary materials such as steel plates and kraft paper pads according to the design requirements, so as to facilitate subsequent lamination. Among them, the four-layer PCB generally includes the top layer, the first middle layer, the second middle layer and the bottom layer, and prepregs are generally provided between the layers. These four layers need to be pre-stacking, so pre-stacking equipment is needed.

[0003] When the existing pre-stacking device pre-stacking a four-layer PCB board, when pre-stacking different layers, it is often necessary to move the stacked inner layer to another workstation, and then use the stacking assembly to repeat the pre-stacking process of other layers, resulting in a large footprint for the entire device, a long pre-stacking time, and a low inner layer pre-stacking efficiency; and when the existing pre-stacking equipment is in use, when stacking one layer on another layer, the stacking orientation may not be accurate enough, resulting in a large position deviation between layers, and the lack of positioning measures may cause defects in the subsequent pressing process, thereby reducing the yield rate. In response to the above problems, the inventors propose a PCB inner layer pre-stacking device and a pre-stacking process for solving the above problems. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a PCB inner layer pre-stacking device and pre-stacking process.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a PCB inner layer pre-stacking device and a pre-stacking process, including an equipment box, a conveyor for conveying the pre-stacked PCB inner layer is fixedly provided at one end of the bottom of the inner wall of the equipment box, and positioning mechanisms for positioning the PCB inner layer are symmetrically provided on both sides of the conveyor, and eight holding mechanisms for placing various layers of materials constituting the PCB inner layer are provided at the other end of the bottom of the inner wall of the equipment box, and the holding mechanism includes a fifth rotating shaft and a holding box fixedly matched with the other end of the fourth rotating shaft, and two first fixed blocks are fixedly provided at the centers of the four sides of the inner wall of the holding box, and a first rack is fixedly provided on one side of the first fixed block through an electric telescopic rod, and a first rack is slidably provided on the surface of the first rack and fixedly matched with the surface of the holding box. A groove-shaped plate, a first spur gear is meshed with one side of the first rack, the first spur gear is mounted on the fifth shaft, a second fixed block is rotatably provided at the top end of the fifth shaft and fixedly matched with the top end of the side of the inner wall of the containing box, a second spur gear is mounted on the surface of the fifth shaft, a second rack is meshed with one side of the second spur gear, the second rack is fixedly provided with an adjustment plate through a moving block, and third fixed blocks are symmetrically slidably provided on both sides of the moving block and fixedly matched with the outer ring of the inner wall of the containing box, a stacking mechanism for pre-stacking the inner layer of the PCB is provided on one side of the bottom of the inner wall of the equipment box, the stacking mechanism includes a first shaft, and the stacking mechanism also includes two first L-shaped stabilizing plates fixedly matched with one side of the bottom of the inner wall of the equipment box, one end of the first L-shaped stabilizing plate is fixed A mounting plate is provided that rotatably cooperates with the first rotating shaft, and a fourth fixing block and a second L-shaped stabilizing plate are respectively fixedly provided at two ends of one side of the mounting plate, and a second grooved plate is fixedly provided at the top of one side of the mounting plate, and a first connecting shaft that rotatably cooperates with one end of an inner wall of the second L-shaped stabilizing plate is provided at the center of one side of the mounting plate, and a third rack that slidably cooperates with the inner wall of the second grooved plate is fixedly provided on one side of the fourth fixing block through the first cylinder, and a third spur gear that is fitted with the first rotating shaft is meshed at the bottom of the third rack, and a transmission gear that is fitted on the first connecting shaft is meshed at the bottom of the third spur gear, and a swing plate is fixedly provided at one end of the first rotating shaft through the mounting plate, and a first movable plate is hingedly provided on one side of the swinging plate, and a second movable plate is fixedly provided at the bottom end of the first movable plate The bottom of the second movable plate is fixed with a stacking plate by a plurality of second cylinders, and mounting blocks are symmetrically fixed at both ends of the bottom of the stacking plate by bolts, and a plurality of needle suction cups are fixed at the bottom of the mounting block, and a slide rail is fixedly arranged on the other side of the mounting plate, and a movable block that slides and cooperates with the surface of the first movable plate is slidably arranged on the surface of the slide rail, and a transmission mechanism for transmitting the power of the stacking mechanism is arranged below the first rotating shaft, and the transmission mechanism includes a second rotating shaft, and two symmetrically arranged rotating mechanisms that continuously drive the containing mechanism to rotate are arranged at one end of the second rotating shaft, and the rotating mechanism includes a first vertical plate fixedly matched with the outer ring of the bottom inner wall of the equipment box, and an annular groove is fixedly arranged on one side of the first vertical plate through a fixed plate, and a third rotating shaft is rotatably arranged on the other side of the first vertical plate,One end of the third rotating shaft passes through the first vertical plate and the fixed plate and is fixed with a first rotating plate. The outer wall of the first rotating plate is fixed with eight connecting rods. One end of the connecting rod is rotatably provided with a fourth rotating shaft connected with the containing mechanism. One end of the fourth rotating shaft is fixed with a rotating bar. One end of the rotating bar is hinged with an arc-shaped slider that slides with the inner wall of the annular groove, and two adjacent fourth rotating shafts are hingedly matched through a movable rod.

[0006] Preferably, the transmission mechanism also includes a second vertical plate and a third vertical plate fixedly matched with the inner ring of the bottom inner wall of the equipment box, one end of one side of the second vertical plate is rotatably provided with a first check block through the second connecting shaft, the second connecting shaft is transmission-matched with the first connecting shaft through the first synchronous belt and the first synchronous wheel, one side of the third vertical plate is rotatably provided with a third connecting shaft, the center of the third connecting shaft is fixedly provided with a fixing ring, one end of the third connecting shaft is slidably provided with a sliding sleeve, a first spring fixedly provided between the fixing ring and the sliding sleeve, one end of the sliding sleeve is fixedly provided with a second check block meshing with one side of the first check block, and the other end of one side of the second vertical plate is rotatably provided with a fourth The second rotating disk is fixedly mounted on the second rotating shaft, and the second rotating disk is fixedly mounted on the second rotating shaft to the drive transmission mechanism.

[0007] Preferably, the positioning mechanism includes a third L-shaped stabilizing plate fixedly matched with one side of the conveyor, a third cylinder is fixedly installed on the top of one side of the third L-shaped stabilizing plate, a moving rod is fixedly provided at the output end of the third cylinder through a fifth fixing block, one end of the moving rod passes through the third L-shaped stabilizing plate and is fixedly provided with a first intermediate plate, two ends of one side of the first intermediate plate are symmetrically provided with a first through hole, the first through hole is slidably provided with a first guide rod, one end of the first guide rod is fixedly provided with a first positioning plate, a second spring sleeved on the first guide rod is fixedly provided between the first intermediate plate and the first positioning plate, two third grooved plates are fixedly provided at the bottom end of one side of the third L-shaped stabilizing plate, a fourth rack is slidably provided on the inner wall of the third grooved plate, a fifth rack is fixedly provided at the bottom of the moving rod The center is provided with a fourth spur gear meshing with the bottom of the fifth rack, and two ends of the first transmission shaft are respectively provided with the first bevel gear through the mounting blocks, and two second transmission shafts are symmetrically rotated on the outer ring of one side of the third L-shaped stabilizing plate, and one end of the second transmission shaft is provided with a second bevel gear meshing with the first bevel gear, and the center of the second transmission shaft is provided with a fifth spur gear meshing with the top of the fourth rack. One end of the fourth rack is fixedly installed with a motor through a connecting block, and the top of the connecting block is provided with a mounting groove, and the output end of the motor is fixedly provided with a round block that rotatably cooperates with the mounting groove through the connecting block, and the top of the round block is fixedly provided with a second intermediate plate through an L-shaped connecting strip, and second through holes are symmetrically provided at both ends of one side of the second intermediate plate, and a second guide rod is slidably provided in the second through hole, and a second positioning plate is fixedly provided at one end of the second guide rod, and a third spring sleeved on the second guide rod is fixedly provided between the second intermediate plate and the second positioning plate.

[0008] A pre-stacking process of a PCB inner layer pre-stacking device comprises the following steps: S1: Adsorb a bottom material, and drive the stacking plate and the needle suction cup to move to the containing box containing the bottom material through the movement of the third rack; S2: Move the bottom material onto the conveyor, and move the third rack to the original position to drive the stacking plate and the needle suction cup to move above the conveyor; S3: Positioning the bottom material, driving the first positioning plate and the second positioning plate to move back and forth by moving the moving rod, repeatedly contacting the bottom material; S4: Move the containing box containing the prepreg to the top position, and drive the second connecting shaft to rotate by rotating the third spur gear, thereby driving the first check block and the second check block to rotate, and then driving the first rotating disk and the connecting rod to rotate, so as to achieve the purpose of moving the containing box containing the prepreg to the top position; S5: Adsorb a prepreg, repeat S1 to S4, move the prepreg to the bottom material, and position it; S6: stack the second middle layer, the first middle layer, and the top layer on the bottom layer respectively, repeat S1 to S5, stack the bottom layer, the second middle layer, the first middle layer, and the top layer together, and sandwich a prepreg between each layer, thereby completing the pre-stacking operation of the entire PCB four-layer board.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a stacking mechanism, a transmission mechanism, a rotating mechanism and a containing mechanism, so that the stacking mechanism can drive the transmission mechanism to work, and then drive the rotating mechanism to operate, and then drive the containing mechanism to rotate, so that when the device pre-stacks different layers, it is not necessary to move the already stacked inner layer to another station, which significantly reduces the footprint of the device, shortens the pre-stacking time, and speeds up the pre-stacking efficiency; by setting a positioning mechanism, the positioning mechanism works, and the four-layer PCB can be positioned, avoiding the problem of inaccurate stacking orientation and large position deviation between layers when one layer is stacked on another layer, thereby improving the yield rate; 2. The present invention utilizes the movement of the third rack to drive the needle suction cup to move back and forth between the holding box located at the top and the conveyor, and drives the second connecting shaft to rotate, thereby driving the second rotating disk and the toggle bar to rotate, thereby driving the first rotating disk and the connecting rod to rotate, thereby driving the holding box to rotate, thereby realizing the pre-stacking operation of the inner layer of the PCB; 3. The present invention utilizes the movement of the moving rod to drive the movement of the first middle plate and the first positioning plate, and when the moving rod moves, it drives the fourth rack and the second positioning plate to move back and forth, so that the first positioning plate and the second positioning plate move back and forth and repeatedly contact the bottom material, thereby positioning the bottom material. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a schematic diagram of the overall external structure of the present invention.

[0012] Figure 2 It is a schematic structural diagram of the interior of the equipment box of the present invention from a first perspective.

[0013] Figure 3 It is a schematic structural diagram of the interior of the equipment box of the present invention from a second viewing angle.

[0014] Figure 4It is a schematic diagram of the structure of the rotating mechanism of the present invention.

[0015] Figure 5 It is a schematic diagram of the structure of the containing mechanism of the present invention.

[0016] Figure 6 It is a schematic diagram of the stacking mechanism structure of the present invention.

[0017] Figure 7 It is a schematic diagram of the transmission mechanism structure of the present invention.

[0018] Figure 8 It is a schematic diagram of the positioning mechanism structure of the present invention.

[0019] Fig. 9 For the present invention Figure 2 Schematic diagram of the local A enlarged structure.

[0020] Fig.10 For the present invention Figure 5 Schematic diagram of the local A enlarged structure.

[0021] In the figure: 1, equipment box; 2, conveyor; 3, positioning mechanism; 301, third L-shaped stabilizing plate; 302, third cylinder; 303, moving rod; 304, first intermediate plate; 305, first guide rod; 306, first positioning plate; 307, third groove plate; 308, fourth rack; 309, fifth rack; 310, first transmission shaft; 311, fourth spur gear; 312, first bevel gear; 313, second transmission shaft; 314, connecting block; 315, motor; 316, L-shaped connecting strip; 317, second positioning plate; 4, holding mechanism; 401, holding box; 402, first fixing block; 403, electric telescopic rod; 404, first rack; 405, first straight gear; 406, fifth shaft; 407, second rack; 408, moving block; 409, adjusting plate; 5, stacking mechanism; 501, first shaft; 502, first L-shaped stabilizing plate; 503, mounting plate; 504, first Four fixed blocks; 505, second L-shaped stabilizing plate; 506, first connecting shaft; 507, first cylinder; 508, third rack; 509, third spur gear; 510, swing plate; 511, first moving plate; 512, second cylinder; 513, stacking plate; 514, needle suction cup; 6, transmission mechanism; 601, second rotating shaft; 602, second vertical plate; 603, second connecting shaft; 604, first check block; 605, third connecting shaft; 60 6. Sliding sleeve; 607. Fourth connecting shaft; 608. Second rotating disk; 609. Driving bar; 610. Third rotating disk; 611. First cylindrical pin; 612. Fourth rotating disk; 7. Rotating mechanism; 701. First vertical plate; 702. Fixed disk; 703. Annular groove; 704. Third rotating shaft; 705. First rotating disk; 706. Connecting rod; 707. Fourth rotating shaft; 708. Rotating bar; 709. Arc-shaped slider; 710. Movable rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example: Figure 1-10 As shown, the present invention provides a PCB inner layer pre-stacking device and pre-stacking process, including an equipment box 1, and a conveyor 2 for conveying the pre-stacking completed PCB inner layer is fixedly provided at one end of the bottom of the inner wall of the equipment box 1: Positioning mechanisms 3 for positioning the inner layer of the PCB are symmetrically arranged on both sides of the conveyor 2. The positioning mechanism 3 includes a third L-shaped stabilizing plate 301 fixedly matched with one side of the conveyor 2. A third cylinder 302 is fixedly installed on the top of one side of the third L-shaped stabilizing plate 301. A moving rod 303 is fixedly arranged on the output end of the third cylinder 302 through a fifth fixing block. One end of the moving rod 303 passes through the third L-shaped stabilizing plate 301 and is fixedly provided with a first intermediate plate 304. First through holes are symmetrically opened at both ends of one side of the first intermediate plate 304. A first guide rod 305 is slidably arranged in the first through hole. The first guide rod 305 is fixedly arranged on the output end of the third cylinder 302 through a fifth fixing block. A first positioning plate 306 is fixedly provided at the end, and a second spring sleeved on the first guide rod 305 is fixedly provided between the first intermediate plate 304 and the first positioning plate 306, so that the movement of the moving rod 303 can drive the first positioning plate 306 to move, so as to position each layer of material, two third grooved plates 307 are fixedly provided at the bottom end of one side of the third L-shaped stabilizing plate 301, and a fourth rack 308 is slidingly provided on the inner wall of the third grooved plate 307, and a fifth rack 309 is fixedly provided at the bottom of the moving rod 303, and mounting blocks are symmetrically fixedly provided at both ends of one side of the third L-shaped stabilizing plate 301, and a rotating device 306 is provided between the two mounting blocks. There is a first transmission shaft 310, the center of the first transmission shaft 310 is equipped with a fourth spur gear 311 meshing with the bottom of the fifth rack 309, both ends of the first transmission shaft 310 are respectively equipped with first bevel gears 312 through the mounting blocks, one side of the third L-shaped stabilizing plate 301 is symmetrically rotated with two second transmission shafts 313 on the outer ring, one end of the second transmission shaft 313 is equipped with a second bevel gear meshing with the first bevel gear 312, the center of the second transmission shaft 313 is equipped with a fifth spur gear meshing with the top of the fourth rack 308, and one end of the fourth rack 308 is fixedly installed with a motor 31 through a connecting block 314. 5. A mounting groove is provided on the top of the connecting block 314. A round block that rotates with the mounting groove is fixedly provided on the output end of the motor 315 through the connecting block 314. A second intermediate plate is fixedly provided on the top of the round block through an L-shaped connecting strip 316. Second through holes are symmetrically provided at both ends of one side of the second intermediate plate. A second guide rod is slidably provided in the second through hole. A second positioning plate 317 is fixedly provided at one end of the second guide rod. A third spring sleeved on the second guide rod is fixedly provided between the second intermediate plate and the second positioning plate 317, so that the movement of the fifth rack 309 can drive the movement of the second positioning plate 317 to position each layer of material. Eight holding mechanisms 4 for placing the materials of the various layers constituting the inner layer of the PCB are provided at the other end of the bottom of the inner wall of the equipment box 1. The holding mechanism 4 includes a fifth rotating shaft 406 and a holding box 401 fixedly matched with the other end of the fourth rotating shaft 707. The opening of the holding box 401 is always facing upward. Two first fixed blocks 402 are fixedly provided at the centers of the four sides of the inner wall of the holding box 401. A first rack 404 is fixedly provided on one side of the first fixed block 402 through an electric telescopic rod 403. A first grooved plate fixedly matched with the surface of the holding box 401 is slidably provided on the surface of the first rack 404. The first grooved plate plays a certain supporting role on the first rack 404, so that the structural stability of the first rack 404 is better when it moves. A first spur gear 405 is meshed with one side of the first rack 404. A spur gear 405 is mounted on the fifth rotating shaft 406. A second fixed block is rotatably provided at the top of the fifth rotating shaft 406 and fixedly matched with the top of the inner wall side of the containing box 401. A second spur gear is mounted on the surface of the fifth rotating shaft 406. A second rack 407 is meshed with one side of the second spur gear. An adjustment plate 409 is fixedly provided on the second rack 407 through a moving block 408. A third fixed block fixedly matched with the outer ring of the inner wall of the containing box 401 is symmetrically slidably provided on both sides of the moving block 408. The moving block 408 slides between the two third fixed blocks, which can improve the structural stability of the moving block 408 when it moves, so that the electric telescopic rod 403 is extended or shortened, and the adjustment plate 409 can be driven to move, so that the adjustment plate 409 can be adjusted and adapted according to the layers of materials of different sizes. A stacking mechanism 5 for pre-stacking the inner layer of the PCB is provided on one side of the bottom inner wall of the equipment box 1, and the stacking mechanism 5 includes a first rotating shaft 501. The stacking mechanism 5 also includes two first L-shaped stabilizing plates 502 fixedly matched with one side of the bottom inner wall of the equipment box 1, a mounting plate 503 rotatably matched with the first rotating shaft 501 is fixedly provided at one end of the first L-shaped stabilizing plate 502, a fourth fixing block 504 and a second L-shaped stabilizing plate 505 are respectively fixedly provided at both ends of one side of the mounting plate 503, a second grooved plate is fixedly provided at the top of one side of the mounting plate 503, a first connecting shaft 506 rotatably matched with one end of the inner wall of the second L-shaped stabilizing plate 505 is rotatably provided on one side of the mounting plate 503, a third rack 508 slidably matched with the inner wall of the second grooved plate is fixedly provided on one side of the fourth fixing block 504 through a first cylinder 507, and a third spur gear 506 fitted with the first rotating shaft 501 is meshed at the bottom of the third rack 508. 9. A transmission gear mounted on the first connecting shaft 506 is meshed at the bottom of the third spur gear 509, so that the movement of the third rack 508 can drive the first rotating shaft 501 to rotate. A swing plate 510 is fixedly provided at one end of the first rotating shaft 501 through the mounting plate 503. A first movable plate 511 is hingedly provided on one side of the swing plate 510. A second movable plate is fixedly provided at the bottom of the first movable plate 511. A stacking plate 513 is fixedly provided at the bottom of the second movable plate through a plurality of second cylinders 512. Mounting blocks are symmetrically fixedly provided at both ends of the bottom of the stacking plate 513 through bolts. A plurality of needle suction cups 514 are fixedly provided at the bottom of the mounting block. A slide rail is fixedly provided on the other side of the mounting plate 503. A movable block slidingly cooperates with the surface of the first movable plate 511. The moving track of the needle suction cup 514 can be limited by the slide rail and the movable block, so that the rotation of the first rotating shaft 501 can drive the needle suction cup 514 to move. A transmission mechanism 6 for transmitting power to the stacking mechanism 5 is provided below the first rotating shaft 501. The transmission mechanism 6 includes a second rotating shaft 601. The transmission mechanism 6 also includes a second vertical plate 602 and a third vertical plate fixedly matched with the inner ring of the bottom inner wall of the equipment box 1. A first check block 604 is provided at one end of one side of the second vertical plate 602 through a second connecting shaft 603 for rotation. The second connecting shaft 603 is transmission-matched with the first connecting shaft 506 through a first synchronous belt and a first synchronous wheel. A third connecting shaft 605 is provided for rotation on one side of the third vertical plate. A fixing ring is fixed to the center, a sliding sleeve 606 is slidably provided at one end of the third connecting shaft 605, a first spring sleeved on the surface of the third connecting shaft 605 is fixed between the fixing ring and the sliding sleeve 606, a second check block engaged with one side of the first check block 604 is fixed at one end of the sliding sleeve 606, when the first check block 604 rotates in the clockwise direction, it cannot drive the second check block to rotate, when the first check block 604 rotates in the counterclockwise direction, it can drive the second check block to rotate, so that the rotation of the first connecting shaft 506 can drive the second connecting shaft 603 The second vertical plate 602 rotates, thereby driving the third connecting shaft 605 to rotate. The other end of one side of the second vertical plate 602 is provided with a fourth connecting shaft 607 that rotates with the other end of one side of the third vertical plate. The fourth connecting shaft 607 is transmitted and matched with the third connecting shaft 605 through a second synchronous belt and a second synchronous wheel. A second rotating disk 608 is mounted on the surface of the fourth connecting shaft 607. A through hole is provided on one side of the second rotating disk 608. A toggle bar 609 is fixed on one side of the second fixed disk 702. A third rotating disk 610 is contacted on one side of the second rotating disk 608. The third rotating disk 610 is provided on one side of the second fixed disk 702. The outer ring of one side of the disk 610 is fixed with eight evenly distributed first cylindrical pins 611 that are slidably matched with the outer wall of the second rotating disk 608, and the inner ring of one side of the third rotating disk 610 is fixed with eight evenly distributed second cylindrical pins that are intermittently in contact with the toggle bar 609 through the fourth rotating disk 612. The third rotating disk 610 and the fourth rotating disk 612 are both mounted on the second rotating shaft 601, and one end of the second rotating shaft 601 is fixedly matched with the other end of one of the third rotating shafts 704, so that the rotation of the third connecting shaft 605 can drive the second rotating shaft 601 to rotate. One end of the second rotating shaft 601 is provided with two symmetrically arranged rotating mechanisms 7 that continuously drive the containing mechanism 4 to rotate. The rotating mechanism 7 includes a first vertical plate 701 that is fixedly matched with the outer ring of the bottom inner wall of the equipment box 1. One side of the first vertical plate 701 is fixedly provided with an annular groove 703 through a fixed plate 702. The other side of the first vertical plate 701 is rotatably provided with a third rotating shaft 704. One end of the third rotating shaft 704 passes through the first vertical plate 701 and the fixed plate 702 and is fixedly provided with a first rotating plate 705. The outer wall of the first rotating plate 705 is fixedly provided with eight connecting rods. A connecting rod 706 is rotatably provided at one end of the connecting rod 706 with a fourth rotating shaft 707 connected to the containing mechanism 4, a rotating bar 708 is fixedly provided at one end of the fourth rotating shaft 707, and an arc-shaped slider 709 is hingedly provided at one end of the rotating bar 708 for sliding cooperation with the inner wall of the annular groove 703. When the first rotating disk 705 rotates, the arc-shaped slider 709 is driven to slide along the annular groove 703, and two adjacent fourth rotating shafts 707 are hingedly cooperated through a movable rod 710, so that the rotation of the third rotating shaft 704 can drive the fourth rotating shaft 707 to rotate.

[0024] A pre-stacking process of a PCB inner layer pre-stacking device comprises the following steps: S1: Adsorbing a bottom material, the third rack 508 moves to drive the stacking plate 513 and the needle suction cup 514 to move to the containing box 401 containing the bottom material, so as to achieve the purpose of adsorbing the bottom material; S2: Move the bottom material onto the conveyor 2, and drive the stacking plate 513 and the needle suction cup 514 to move above the conveyor 2 by moving the third rack 508 to the original position, so as to achieve the purpose of moving the bottom material onto the conveyor 2; S3: Positioning the bottom material, by moving the moving rod 303 to drive the first positioning plate 306 and the second positioning plate 317 to move back and forth, repeatedly contacting the bottom material, so as to position the bottom material; S4: Move the containing box 401 containing the prepreg to the top position, and drive the second connecting shaft 603 to rotate by rotating the third spur gear 509, thereby driving the first check block 604 and the second check block to rotate, and then driving the first rotating disk 705 and the connecting rod 706 to rotate, so as to achieve the purpose of moving the containing box 401 containing the prepreg to the top position; S5: Adsorb a prepreg, repeat S1 to S4, move the prepreg to the bottom material, and position it; S6: stack the second middle layer, the first middle layer, and the top layer on the bottom layer respectively, repeat S1 to S5, stack the bottom layer, the second middle layer, the first middle layer, and the top layer together, and sandwich a prepreg between each layer, thereby completing the pre-stacking operation of the entire PCB four-layer board.

[0025] Working principle: When the inner layer of the PCB needs to be pre-stacked, a total of four layers of materials (generally in plate form), including a plurality of top layers, a first middle layer, a second middle layer and a bottom layer, are placed in four containing boxes 401, and there is an empty containing box 401 between the containing boxes 401 for different materials, and a plurality of prepregs are placed in each of these containing boxes 401; The pre-stacking process begins. The first step is to absorb a bottom material: the first cylinder 507 is started to extend the set distance, driving the third rack 508 to move, and then driving the third spur gear 509 to rotate half a circle in the counterclockwise direction around the first rotating shaft 501, and then driving the swing plate 510 to rotate half a circle in the counterclockwise direction around the first rotating shaft 501, and then driving the first moving plate 511 and the second moving plate to move from the initial position to above the holding box 401 at the top, and starting the second cylinder 512 to extend it, driving the stacking plate 513, the mounting block and the needle suction cup 514 to move downward until the bottom of the needle suction cup 514 contacts with the bottom material and tightly absorbs the bottom material; The second step is to move the bottom material onto the conveyor 2: start the first air cylinder 507 to shorten the set distance, drive the third rack 508 to return to its original position, and then drive the third spur gear 509 to rotate half a circle in the clockwise direction with the first rotating shaft 501 as the axis, and then drive the swing plate 510 to rotate half a circle in the clockwise direction with the first rotating shaft 501 as the center, and then drive the first moving plate 511 and the second moving plate back to the initial position, and then drive the bottom material to move onto the conveyor 2, and the needle suction cup 514 removes the suction force, so that the bottom material falls on the conveyor 2; The third step is to position the bottom material so that the center position of the bottom material coincides with the center position of the stacking position: the two third air cylinders 302 are respectively started to repeatedly extend and shorten the set distance, drive the fifth fixed block and the moving rod 303 to move, and then drive the first middle plate 304 and the first positioning plate 306 to move, and when the moving rod 303 moves, it drives the fifth rack 309 to move, and then drives the fourth spur gear 311 and the first bevel gear 312 to reciprocate around the first transmission shaft 310, and then drives the fifth spur gear and the second bevel gear to reciprocate around the second transmission shaft 313, and then drives the fourth rack 308, the motor 315 and the connecting block 314 to reciprocate, and then drives the L-shaped connecting strip 316 and the second positioning plate 317 to reciprocate, so that the first positioning plate 306 and the second positioning plate 317 reciprocate and repeatedly contact with the bottom material, thereby positioning the bottom material; The fourth step is to move the holding box 401 containing the semi-cured sheet to the top position: in the second step, while the third spur gear 509 rotates half a circle, it drives the transmission gear to rotate one circle with the first connecting shaft 506 as the axis, and then drives the second connecting shaft 603 to rotate, and then drives the first check block 604 and the second check block to rotate one circle, and then drives the third connecting shaft 605 to rotate, and through the transmission action of the second synchronous belt and the second synchronous wheel, drives the second rotating disk 608 and the toggle bar 609 to rotate one circle with the fourth connecting shaft 607 as the center. During the process of the toggle bar 609 rotating one circle, it drives the second cylindrical pin to rotate one eighth of a circle, and then drives the third rotating disk 610 and the fourth rotating disk 612 to rotate one eighth of a circle with the second rotating shaft 601 as the axis, and then drives the first rotating disk 705 and the connecting rod 706 to rotate one eighth of a circle with the third rotating shaft 704 as the axis, and then drives the holding box 401 containing the semi-cured sheet to move to the top position, and the holding box 401 containing the bottom material rotates downward; Step 5, adsorbing a prepreg: repeating steps 1 to 4, moving the prepreg to the bottom layer material, positioning it, and driving the container 401 containing the second layer (from bottom to top) of the material to move to the top position; In the sixth step, the materials of the second middle layer, the first middle layer, and the top layer are stacked on the materials of the bottom layer respectively: repeat the first step to the fifth step, and stack the four layers of materials of the bottom layer, the second middle layer, the first middle layer, and the top layer together, and a layer of semi-cured sheet will be sandwiched between each layer, thereby completing the pre-stacking operation of the entire PCB four-layer board. When the next pre-stacking process is required, start the motor 315 to rotate half a circle, drive the round block and the L-shaped connecting strip 316 to rotate half a circle, and then drive the second middle plate and the second positioning plate 317 to leave the surface of the conveyor 2, start the conveyor 2 to rotate the set number of circles, move the inner layer of the PCB that has been pre-stacked to the set position, and empty the surface of the conveyor 2 under the needle suction cup 514 to prepare for the next pre-stacking operation.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A PCB inner layer pre-stacking device and pre-stacking process, comprising an equipment box (1), wherein a conveyor (2) for conveying pre-stacking inner layers of PCBs is fixedly provided at one end of the bottom of the inner wall of the equipment box (1), wherein the conveyor (2) is used to convey the pre-stacking inner layers of PCBs, and the characteristics are: Positioning mechanisms (3) for positioning the inner layer of the PCB are symmetrically arranged on both sides of the conveyor (2); eight holding mechanisms (4) for placing the materials of each layer constituting the inner layer of the PCB are arranged at the other end of the bottom of the inner wall of the equipment box (1); a stacking mechanism (5) for pre-stacking the inner layer of the PCB is arranged at one side of the bottom of the inner wall of the equipment box (1); the stacking mechanism (5) comprises a first rotating shaft (501); a transmission mechanism (6) for transmitting power of the stacking mechanism (5) is arranged below the first rotating shaft (501); the transmission mechanism (6) comprises a second rotating shaft (601); and two rotating mechanisms (7) for continuously driving the holding mechanism (4) to rotate are symmetrically arranged at one end of the second rotating shaft (601).

2. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 1, characterized in that: The rotating mechanism (7) comprises a first vertical plate (701) fixedly matched with the outer ring of the bottom of the inner wall of the equipment box (1); an annular groove (703) is fixedly provided on one side of the first vertical plate (701) through a fixed plate (702); a third rotating shaft (704) is rotatably provided on the other side of the first vertical plate (701); one end of the third rotating shaft (704) passes through the first vertical plate (701) and the fixed plate (702) and is fixedly provided with a first rotating plate (705); eight connecting rods (706) are fixedly provided on the outer wall of the first rotating plate (705); a fourth rotating shaft (707) connected to the containing mechanism (4) is rotatably provided on one end of the connecting rod (706); a rotating bar (708) is fixedly provided on one end of the fourth rotating shaft (707); an arc-shaped sliding block (709) slidably matched with the inner wall of the annular groove (703) is hingedly provided on one end of the rotating bar (708); and two adjacent fourth rotating shafts (707) are hingedly matched via a movable rod (710).

3. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 2, characterized in that: The containing mechanism (4) comprises a fifth rotating shaft (406), and a containing box (401) fixedly matched with the other end of the fourth rotating shaft (707); two first fixed blocks (402) are fixedly provided at the centers of four sides of the inner wall of the containing box (401); a first rack (404) is fixedly provided on one side of the first fixed block (402) via an electric telescopic rod (403); a first grooved plate fixedly matched with the surface of the containing box (401) is slidably provided on the surface of the first rack (404); a first spur gear (405) is meshed with one side of the first rack (404); The first spur gear (405) is mounted on a fifth rotating shaft (406); a second fixed block is rotatably provided at the top end of the fifth rotating shaft (406) and is fixedly matched with the top end of the side of the inner wall of the containing box (401); a second spur gear is mounted on the surface of the fifth rotating shaft (406); a second rack (407) is meshed with one side of the second spur gear; an adjustment plate (409) is fixedly provided on the second rack (407) via a moving block (408); and third fixed blocks are symmetrically slidably provided on both sides of the moving block (408) and are fixedly matched with the outer ring of the inner wall of the containing box (401).

4. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 3, characterized in that: The stacking mechanism (5) further comprises two first L-shaped stabilizing plates (502) fixedly matched with one side of the bottom of the inner wall of the equipment box (1); a mounting plate (503) rotatably matched with the first rotating shaft (501) is fixedly provided at one end of the first L-shaped stabilizing plate (502); a fourth fixing block (504) and a second L-shaped stabilizing plate (505) are respectively fixedly provided at both ends of one side of the mounting plate (503); a second grooved plate is fixedly provided at the top end of one side of the mounting plate (503); A first connecting shaft (506) is provided for rotationally cooperating with one end of the inner wall of the second L-shaped stabilizing plate (505), and a third rack (508) is fixedly provided on one side of the fourth fixing block (504) through a first cylinder (507) for slidingly cooperating with the inner wall of the second grooved plate. A third spur gear (509) is meshed with the bottom of the third rack (508) and is fitted with the first rotating shaft (501). A transmission gear fitted on the first connecting shaft (506) is meshed with the bottom of the third spur gear (509).

5. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 4, characterized in that: One end of the first rotating shaft (501) passes through the mounting plate (503) and is fixedly provided with a swing plate (510); one side of the swing plate (510) is hingedly provided with a first movable plate (511); a second movable plate is fixedly provided at the bottom end of the first movable plate (511); a stacking plate (513) is fixedly provided at the bottom of the second movable plate via a plurality of second cylinders (512); mounting blocks are symmetrically fixedly provided at both ends of the bottom of the stacking plate (513) via bolts; a plurality of needle suction cups (514) are fixedly provided at the bottom of the mounting block; a slide rail is fixedly provided at the other side of the mounting plate (503); a movable block slidably matched with the surface of the first movable plate (511) is slidably provided on the surface of the slide rail.

6. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 5, characterized in that: The transmission mechanism (6) further comprises a second vertical plate (602) and a third vertical plate fixedly matched with the inner ring of the bottom of the inner wall of the equipment box (1); a first check block (604) is rotatably provided on one end of one side of the second vertical plate (602) via a second connecting shaft (603); the second connecting shaft (603) is transmission-matched with the first connecting shaft (506) via a first synchronous belt and a first synchronous wheel; a third connecting shaft (605) is rotatably provided on one side of the third vertical plate; a fixing ring is fixedly provided at the center of the third connecting shaft (605); a sliding sleeve (606) is slidably provided on one end of the third connecting shaft (605); a first spring sleeved on the surface of the third connecting shaft (605) is fixedly provided between the fixing ring and the sliding sleeve (606); and a second check block meshing with one side of the first check block (604) is fixedly provided on one end of the sliding sleeve (606).

7. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 6, characterized in that: A fourth connecting shaft (607) is rotatably provided at the other end of one side of the second vertical plate (602) and is rotatably matched with the other end of one side of the third vertical plate. The fourth connecting shaft (607) is transmission-matched with the third connecting shaft (605) through a second synchronous belt and a second synchronous wheel. A second rotating disk (608) is sleeved on the surface of the fourth connecting shaft (607). A through hole is provided on one side of the second rotating disk (608). A toggle bar (609) is fixedly provided on one side of the second fixed disk (702). A third rotating disk (610) is contacted with one side of the second rotating disk (608). ), the outer ring of one side of the third rotating disk (610) is fixedly provided with eight evenly distributed first cylindrical pins (611) that are slidably matched with the outer wall of the second rotating disk (608), and the inner ring of one side of the third rotating disk (610) is fixedly provided with eight evenly distributed second cylindrical pins that are intermittently in contact with the toggle bar (609) through the fourth rotating disk (612), and the third rotating disk (610) and the fourth rotating disk (612) are both mounted on the second rotating shaft (601), and one end of the second rotating shaft (601) is fixedly matched with the other end of one of the third rotating shafts (704).

8. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 7, characterized in that: The positioning mechanism (3) comprises a third L-shaped stabilizing plate (301) fixedly matched with one side of the conveyor (2); a third cylinder (302) is fixedly installed on the top of one side of the third L-shaped stabilizing plate (301); a moving rod (303) is fixedly provided at the output end of the third cylinder (302) via a fifth fixing block; one end of the moving rod (303) passes through the third L-shaped stabilizing plate (301) and is fixedly provided with a first intermediate plate (304); first through holes are symmetrically provided at both ends of one side of the first intermediate plate (304); a first guide rod (305) is slidably provided in the first through hole; a first positioning plate (306) is fixedly provided at one end of the first guide rod (305); and a second spring sleeved on the first guide rod (305) is fixedly provided between the first intermediate plate (304) and the first positioning plate (306).

9. A PCB inner layer pre-stacking device and pre-stacking process as claimed in claim 8, characterized in that: Two third grooved plates (307) are fixedly provided at the bottom end of one side of the third L-shaped stabilizing plate (301), a fourth rack (308) is slidably provided on the inner wall of the third grooved plate (307), a fifth rack (309) is fixedly provided at the bottom of the moving rod (303), mounting blocks are symmetrically fixedly provided at both ends of one side of the third L-shaped stabilizing plate (301), a first transmission shaft (310) is rotatably provided between the two mounting blocks, a fourth spur gear (311) meshing with the bottom of the fifth rack (309) is sleeved at the center of the first transmission shaft (310), first bevel gears (312) are sleeved at both ends of the first transmission shaft (310) respectively passing through the mounting blocks, two second transmission shafts (313) are symmetrically rotatably provided on the outer ring of one side of the third L-shaped stabilizing plate (301), one end of the second transmission shaft (313) is sleeved with a fourth spur gear (311) meshing with the bottom of the fifth rack (309), The first bevel gear (312) is meshed with a second bevel gear, the center of the second transmission shaft (313) is sleeved with a fifth spur gear meshed with the top of the fourth rack (308), one end of the fourth rack (308) is fixedly mounted with a motor (315) via a connecting block (314), the top of the connecting block (314) is provided with a mounting groove, the output end of the motor (315) is fixedly provided with a round block that rotates with the mounting groove through the connecting block (314), the top of the round block is fixedly provided with a second intermediate plate via an L-shaped connecting strip (316), one end of the second intermediate plate is symmetrically provided with second through holes, the second through hole is slidably provided with a second guide rod, one end of the second guide rod is fixedly provided with a second positioning plate (317), and a third spring sleeved on the second guide rod is fixedly provided between the second intermediate plate and the second positioning plate (317).

10. A pre-stacking process of a PCB inner layer pre-stacking device according to any one of claims 1 to 9, characterized in that: The steps include: S1: sucking a bottom material, and driving the stacking plate (513) and the needle suction cup (513) to move to the storage box (401) containing the bottom material through the movement of the third rack (508); S2: moving the bottom material onto the conveyor (2), and driving the stacking plate (513) and the needle suction cup (513) to move above the conveyor (2) by moving the third rack (508) to the original position; S3: positioning the bottom material, and driving the first positioning plate (306) and the second positioning plate (317) to move back and forth by moving the moving rod (303), and repeatedly contacting the bottom material; S4: moving the containing box (401) containing the prepreg to the top position, and driving the second connecting shaft (603) to rotate by rotating the third spur gear (509), thereby driving the first check block (604) and the second check block to rotate, and then driving the first rotating disk (705) and the connecting rod (706) to rotate, so as to achieve the purpose of moving the containing box (401) containing the prepreg to the top position; S5: Adsorb a prepreg, repeat S1 to S4, move the prepreg to the bottom material, and position it; S6: stack the materials of the second middle layer, the first middle layer, and the top layer on the materials of the bottom layer respectively, repeat S1 to S5, stack the materials of the bottom layer, the second middle layer, the first middle layer, and the top layer together, and sandwich a layer of prepreg between each layer, thereby completing the pre-stacking operation of the entire PCB four-layer board.

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