DBC copper-clad substrate automatic positioning screen printing equipment

Abstract

The present application relates to the technical field of semiconductor, especially to a kind of DBC copper-clad plate automatic positioning silk screen printing equipment, there is no equipment that can adapt to DBC copper-clad plate automatic positioning silk screen printing in current market or prior art, provide a kind of DBC copper-clad plate automatic positioning silk screen printing equipment, including operation platform, the rear side of the upper end of the operation platform is equipped with silk screen printing device, silk screen printing device includes the support box of being fixedly connected with operation platform, support box is equipped with rotatable cylindrical cam, cylindrical cam front end is equipped with suction wafer plate, when the cylindrical cam rotates, it can form the structure that suction wafer plate moves up and down intermittently and swings intermittently again;The right side of the upper end of the operation platform is equipped with the carrier base that can move forward and backward, the upper end of carrier base is equipped with the carrier holder that can move left and right, the upper end of carrier holder is equipped with carrier plate;Instead of manual installation, save human resources, form automatic production.

Description

Technical Field

[0001] This invention relates to the field of semiconductor technology, and in particular to an automatic positioning screen printing device for DBC copper-clad substrates. Background Technology

[0002] DBC copper-clad laminates possess high thermal conductivity, high electrical insulation, high mechanical strength, and low expansion characteristics, while also exhibiting the high conductivity and excellent solderability of oxygen-free copper. Furthermore, they can be etched with various patterns like PCB circuit boards, making them widely used in semiconductor refrigeration and aerospace fields. DBC copper-clad laminate screen printing refers to transferring nitrogen-containing (N) crystal grains onto corresponding phosphorus (P) crystal grains on the substrate to form a PN junction. Due to the small size of the crystal grains, manual assembly is not only difficult but also consumes significant human resources. Currently, there is no equipment on the market or in existing technologies capable of automatically positioning and screen printing on DBC copper-clad laminates. Therefore, an automatic positioning and screen printing device for DBC copper-clad laminates is designed to solve the aforementioned problems. Summary of the Invention

[0003] This invention addresses the lack of equipment in the market or existing technologies capable of automatically positioning and screen printing on DBC copper-clad laminates. It provides an automatic positioning and screen printing device for DBC copper-clad laminates, which replaces manual installation, saves manpower, and enables automated production, effectively solving the problems mentioned in the background art.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows:

[0005] An automatic positioning screen printing device for DBC copper clad substrates includes an operating table. A screen printing device is provided on the rear side of the upper end of the operating table. The screen printing device includes a support box fixedly connected to the operating table. A rotatable cylindrical cam is provided inside the support box. A crystal suction plate is provided at the front end of the cylindrical cam. When the cylindrical cam rotates, it can cause the crystal suction plate to move up and down intermittently and swing intermittently. A carrier base that can move back and forth is provided on the right side of the upper end of the operating table. A carrier support that can move left and right is provided on the upper end of the carrier base. A carrier plate is provided on the upper end of the carrier support.

[0006] A first motor is fixedly connected to the upper surface of the support box, a cylindrical cam is fixedly connected to the output end of the first motor, a first sliding pin is engaged at the front end of the outer surface of the cylindrical cam, side plates are fixedly connected to the inner walls of the front sides of the support box, a horizontal plate is slidably connected to the inner walls of the two side plates, the first sliding pin is fixedly connected to the horizontal plate, and the crystal-absorbing plate is installed at the lower end of the horizontal plate.

[0007] A main shaft is rotatably connected to the inner wall of the middle section of the horizontal plate. An extension arm is fixedly connected to the upper end of the outer surface of the main shaft. The crystal-absorbing plate is mounted on the extension arm. A transmission cylinder is slidably connected to the middle of the outer surface of the main shaft. A dial is fixedly connected to the outer surface of the transmission cylinder. A driving spur gear is coaxially fixed to the lower end of the cylindrical cam. A driven spur gear meshes with one side of the outer surface of the driving spur gear. A driving pulley is coaxially fixed to the lower ends of the driving spur gear and the driven spur gear. A driven pulley is connected to the front end of the driving pulley. A lever that cooperates with the dial is coaxially fixed to the lower end of the driven pulley. A sector-shaped locking plate that meshes with the dial is coaxially fixed to the lower end of the lever.

[0008] The upper inner wall of the top of the support box is fixedly connected to a limiting cylinder, and the inner wall of the limiting cylinder is slidably connected to a long shaft that is rotatably connected to the main shaft. The upper end of the outer surface of the long shaft is fixedly connected to a limiting rod, and the other end of the limiting rod is hinged to a limiting arm parallel to the extension arm. The crystal suction plate is hinged to the other end of the limiting arm and the extension arm.

[0009] A second motor is fixedly connected to the right side of the upper surface of the operating platform, and a long threaded rod is fixedly connected to the output end of the second motor. The carrier base is slidably connected to the upper surface of the operating platform, and the carrier base is threadedly connected to the outer surface of the long threaded rod. A short threaded rod is rotatably connected to the inner wall of the carrier base. The carrier support is slidably connected to the carrier base, and a threaded seat that is threadedly connected to the short threaded rod is fixedly connected to the lower surface of the carrier support.

[0010] The inner walls at both ends of the carrier support are respectively provided with locking devices. The locking devices include positioning boxes that are slidably connected to the inner walls of the carrier support. Positioning holes that cooperate with the corresponding positioning boxes are respectively opened on the left and right end surfaces of the carrier plate. Positioning pins are slidably connected to the inner walls at the front and rear ends of the positioning boxes. Locking holes that cooperate with the positioning pins are respectively opened on the inner walls on both sides of the positioning holes. Movable control plates are respectively provided on the left and right sides of the carrier support. When the control plates move, they can cause the positioning pins to move inward and the positioning boxes to move downward.

[0011] The inner end face of the positioning pin is fixedly connected to a tension spring pad, and the outer surface of the positioning pin is fitted with a second tension spring that cooperates with the tension spring pad. The inner end face of the tension spring pad is hinged to a first connecting rod. The inner ends of the two first connecting rods are hinged to a middle connecting rod that is slidably connected to the positioning box. The inner wall of the lower end of the middle connecting rod is fixedly connected to a second movable pin, and the lower end of the positioning box is fixedly connected to a first movable pin. The inner wall of the upper end of the control plate is provided with a first guide groove that cooperates with the first movable pin, and the inner wall of the lower end of the control plate is provided with a second guide groove that cooperates with the second movable pin.

[0012] The inner wall of the front end of the operating table is provided with a loading rack that can move downwards intermittently. The inner wall of the loading rack is provided with multiple sets of material support components. Each set of material support components includes four material stop seats that are on the same horizontal plane and fixed to the inner wall of the loading rack. Material stop wedges are slidably connected to the inner wall of the material stop seats. First springs that cooperate with the material stop wedges are fixed to both sides of the bottom inner wall of the material stop seats.

[0013] The loading rack is slidably connected to the inner wall of the front end of the operating table. Square sliders are slidably connected to the upper and lower ends and the left and right sides of the inner wall of the middle part of the loading rack. A first threaded rod is fixed to the inner wall of each of the two square sliders. Two hollow cylinders are rotatably connected to the inner wall of the front end of the operating table and are sleeved on the outer surface of the corresponding first threaded rods. Incomplete threaded cylinders that cooperate with the first threaded rods are fixed to the inner wall of the hollow cylinders. Two centrally symmetrical pawls are hinged to the non-center part of the upper surface of the hollow cylinder. Double-sided gears are rotatably connected to the upper part of the outer surface of the central cylinder. Ratchets that mesh with the pawls are opened on the inner side of the double-sided gears. Straight racks that cooperate with the corresponding double-sided gears are fixed to the left and right ends of the carrier base. A neutral spring is fixed to the inner end face of each square slider. Short connecting rods are hinged to the upper part of the outer surface of each of the two first threaded rods. A handle is hinged to the inner end of each of the two short connecting rods.

[0014] The front surface of the control panel is fixed with first connecting rods on the upper and lower sides respectively. The front surfaces of the four first connecting rods are fixed with a first clutch plate. The lower front side of the loading rack is provided with a baffle that cooperates with the first clutch plate. The rear surface of the control panel is fixed with second connecting rods on the upper and lower sides respectively. The rear surfaces of the four second connecting rods are fixed with a second clutch plate. The rear side of the upper surface of the operating platform is fixed with a discharge platform that cooperates with the second clutch plate. The outer surfaces of the second connecting rods are respectively fitted with long springs that cooperate with the control panel.

[0015] The present invention has a novel and ingenious structure, and has the following advantages compared with the prior art:

[0016] When the first motor drives the cylindrical cam to rotate, it can drive the corresponding crystal-collecting plate and electric suction cup to move up and down intermittently and swing left and right intermittently. When the crystal-collecting plate and electric suction cup swing to the left to the designated position, that is, the upper position of the corresponding N crystal grain carrier plate, the cylindrical cam continues to rotate, which drives the crystal-collecting plate and electric suction cup to move downward. When the electric suction cup moves downward to the upper position of the corresponding N crystal grain, the electric suction cup works to adsorb and fix the N crystal grain. At this time, the cylindrical cam continues to rotate, which drives the crystal-collecting plate, electric suction cup, and N crystal grain to move upward, so that the N crystal grain detaches from the inner wall of the crystal grain groove. When it moves upward to the top position, the cylindrical cam continues to rotate, which drives the corresponding crystal-collecting plate, electric suction cup, and N crystal grain to swing to the right, that is, move to the P crystal grain substrate. At this time, the cylindrical cam continues to rotate, which drives the corresponding electric suction cup and N crystal grain to move downward. When it moves to the designated position, the electric suction cup stops working, so that the N crystal grain is placed on the corresponding When the P-crystal grains are being fed, the circumferential cam continues to rotate, driving the crystal suction plate and electric suction cup to move upwards and then swing to the left, repeating this cycle to complete the screen printing. Vision sensors are fixed to the left and right sides of the front surface of the support box. These sensors monitor the N-crystal grain plate and the P-crystal grain substrate to prevent missed or excessive printing. The vision sensors are existing technology and will not be described in detail here. A movable carrier drives the N-crystal grain plate to move after the N-crystal grains are fed, allowing the next N-crystal grain to move to a designated position, thus enabling the electric suction cup to pick up the material again. A movable carrier base and carrier support control the movement of the P-crystal grain substrate, ensuring that the next P-crystal grain reaches a designated position when the corresponding P-crystal grain is fed, thus enabling the electric suction cup to release the material again. The PLC controls the visual sensors, motors, and electric suction cup to work together, completing the screen printing process, replacing manual installation, saving manpower, and achieving automated production. Attached Figure Description

[0017] Figure 1 This is an isometric view I of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0018] Figure 2 This is an isometric view II of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0019] Figure 3 This is a schematic diagram of the support box installation for an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0020] Figure 4 This is a cross-sectional view of the support box of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0021] Figure 5 This is a schematic diagram of the horizontal plate installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0022] Figure 6 This is a schematic diagram of the cylindrical cam structure of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0023] Figure 7 This is a schematic diagram of the installation of the extension arm of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0024] Figure 8 This is a schematic diagram of the loading rack installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0025] Figure 9 This is a schematic diagram of the straight toothed rack installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0026] Figure 10 This is a schematic diagram of the installation of the first threaded rod in an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0027] Figure 11 This is a cross-sectional view of the material stop of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0028] Figure 12 This is a cross-sectional view of the loading rack of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0029] Figure 13 This is a schematic diagram of the double-sided gear installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0030] Figure 14 This is a cross-sectional view of the carrier support of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0031] Figure 15 This is a schematic diagram of the positioning box installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0032] Figure 16 This is a schematic diagram of the installation of the first clutch plate in an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0033] Figure 17 This is a schematic diagram of the control board installation of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0034] Figure 18 This is a schematic diagram of the control board structure of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0035] Figure 19 This is a cross-sectional view of the positioning box of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0036] Figure 20 This is a schematic diagram of the N-crystal plate structure of an automatic positioning screen printing device for DBC copper-clad substrates according to the present invention.

[0037] Numbering in the diagram: 1-Operating panel, 2-Support box, 3-First motor, 4-Cylindrical cam, 5-Horizontal plate, 6-Side plate, 7-Base plate, 8-First sliding pin, 9-Driving spur gear, 10-Driven spur gear, 11-Driving pulley, 13-Driven pulley, 14-Lever, 15-Sector-shaped locking plate, 16-Dial plate, 17-Transmission cylinder, 18-Main shaft, 19-Extension arm, 20-Crystal suction plate, 21-Suction cup, 22-Limit position 23-Limit rod, 24-Long shaft, 25-Limit cylinder, 26-Second motor, 27-Long threaded rod, 28-Carrier base, 29-Long threaded cylinder, 30-Short threaded rod, 31-Threaded seat, 32-Carrier support, 33-Unloading platform, 34-Loading rack, 35-Stop seat, 36-First spring, 37-Stop wedge, 38-First threaded rod, 39-Square slider, 40-Neutral spring, 41-Handle 42-Short connecting rod, 43-Double-sided gear, 44-Pawl, 45-Spring plate, 46-Hollow cylinder, 47-Incompletely threaded cylinder, 48-Straight rack, 49-Carrier plate, 50-Locking box, 51-Top cone, 52-Locking pin, 53-Second tension spring, 54-Tension spring washer, 55-First connecting rod, 56-Middle connecting rod, 57-First guide rod, 58-Second spring, 59-First live pin, 60-Second live pin, 61- Control board, 62-first guide groove, 63-second guide groove, 64-transmission roller, 65-first connecting rod, 66-first clutch plate, 67-long spring, 68-second connecting rod, 69-second clutch plate, 70-baffle, 71-vision sensor, 72-moving carrier, 73-N crystallization plate, 74-crystal groove, 75-N crystallization, 76-P crystallization substrate, 77-P crystallization, 78-spring support. Detailed Implementation

[0038] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] like Figures 1-20 As shown, the present invention provides an automatic positioning screen printing device for DBC copper clad substrates, including an operating table 1. A screen printing device is provided on the rear side of the upper end of the operating table 1. The screen printing device includes a support box 2 fixedly connected to the operating table 1. A rotatable cylindrical cam 4 is provided inside the support box 2. A crystal suction plate 20 is provided at the front end of the cylindrical cam 4. When the cylindrical cam 4 rotates, it can cause the crystal suction plate 20 to move up and down intermittently and swing intermittently. A carrier base 28 that can move back and forth is provided on the right side of the upper end of the operating table 1. A carrier support 32 that can move left and right is provided on the upper end of the carrier base 28. A carrier plate 49 is provided on the upper end of the carrier support 32.

[0040] like Figures 1-8 As shown in Figure 20, multiple support legs are fixed to the bottom of the operating platform 1. The operating platform 1 and the support legs provide support and fixation for the entire equipment, enabling stable operation. A movable carrier 72 is provided on the upper left side of the operating platform 1. The movable carrier 72 can move freely forward and backward or left and right through a motor and ball screw. The movable carrier 72 is existing technology and will not be described in detail. An N crystal grain 75 carrier plate is placed on the upper part of the movable carrier 72. Figure 20As shown, a grain groove 74 is formed on the N-crystal grain 75 plate 73, and N-crystal grains 75 are placed in the grain groove 74; multiple P-crystal grain 77 substrates 76 are placed on the carrier plate 49, and multiple P-crystal grains 77 are loaded in the P-crystal grain 77 plate; the lower end of the crystal-absorbing plate 20 is provided with an electric suction cup 21 that can adsorb and fix the N-crystal grains 75. The electric suction cup 21 is prior art and will not be described in detail; when the cylindrical cam 4 rotates, it can drive the corresponding crystal-absorbing plate 20 and electric suction cup 21 to move up and down intermittently and swing left and right intermittently. When the crystal-absorbing plate 20 and electric suction cup 21 swing to the left to the designated position, that is, the upper position of the corresponding N-crystal grain 75 carrier plate, As the cylindrical cam 4 continues to rotate, it drives the crystal-absorbing plate 20 and the electric suction cup 21 to move downwards. When the electric suction cup 21 moves downwards to the upper position of the corresponding N crystal grain 75, it works to adsorb and fix the N crystal grain 75. At this time, as the cylindrical cam 4 continues to rotate, it drives the crystal-absorbing plate 20, the electric suction cup 21, and the N crystal grain 75 to move upwards, causing the N crystal grain 75 to detach from the inner wall of the crystal groove 74. When it moves upwards to the top position, as the cylindrical cam 4 continues to rotate, it drives the corresponding crystal-absorbing plate 20, the electric suction cup 21, and the N crystal grain 75 to swing to the right, that is, to move onto the P crystal grain 77 substrate 76. At this time, the cylindrical cam 4 continues to rotate. The movement of the motorized chuck 21 and the N-crystal grain 75 will drive them downwards. When they reach the designated position, the motorized chuck 21 will stop working, thus placing the N-crystal grain 75 on the corresponding P-crystal grain 77. At this time, the circumferential cam will continue to rotate, driving the crystal suction plate 20 and the motorized chuck 21 to move upwards and then swing to the left, repeating this cycle to complete the screen printing. Vision sensors 71 are fixed to the left and right sides of the front surface of the support box 2. The vision sensors 71 can monitor the N-crystal grain 75 plate 73 and the P-crystal grain 77 substrate 76 to prevent missed or excessive printing. The vision sensors 71 are existing technology and will not be described in detail. The movement of the set carrier... After the N crystal grains 75 are fed, the device 72 can drive the N crystal grain 75 plate 73 to move, so that the next N crystal grain 75 moves to the designated position, thus realizing the electric suction cup 21 picking up the material again. By setting the movable carrier base 28 and carrier support 32, the device can control the movement of the P crystal grain 77 substrate 76. When the corresponding P crystal grain 77 is fed, the next P crystal grain 77 reaches the designated position, thus realizing the electric suction cup 21 releasing the material again. The PLC controls the visual sensor 71, each motor and the electric suction cup 21 to work together to complete the screen printing work, replace manual installation, save manpower and form automated production.

[0041] The upper surface of the support box 2 is fixedly connected to the first motor 3, the cylindrical cam 4 is fixedly connected to the output end of the first motor 3, the front end of the outer surface of the cylindrical cam 4 is engaged with the first sliding pin 8, the inner walls of the front sides of the support box 2 are respectively fixedly connected to the side plates 6, the inner walls of the two side plates 6 are slidably connected to a horizontal plate 5, the first sliding pin 8 is fixedly connected to the horizontal plate 5, and the crystal-absorbing plate 20 is installed at the lower end of the horizontal plate 5.

[0042] like Figures 3-6 As shown, the function of the first motor 3 is to provide rotational power for the cylindrical cam 4. The motor is existing technology and will not be described in detail. The horizontal plate 5 is slidably connected to the inner wall of the side plate 6, and the horizontal plate 5 limits the first sliding pin 8 to only move up and down. The installation and shape of the cylindrical cam 4 are as follows... Figure 6 As shown, the outer surface of the cylindrical cam 4 has an annular groove and a V-shaped groove. The V-shaped groove consists of a flat groove and two inclined grooves. When the annular groove engages with the first sliding pin 8, the height of the first sliding pin 8 is fixed and will not change, i.e., it stays at a specified height for a period of time. When the first sliding pin 8 engages with the inclined groove of the V-shaped groove, it will drive the first sliding pin 8 to move upward or downward. When the first sliding pin 8 engages with the flat groove section of the V-shaped groove, it will cause the first sliding pin 8 to stop briefly at a specified height. Therefore, when the cylindrical cam 4 rotates, it can drive the first sliding pin 8 through engagement with the first sliding pin 8, and when the annular groove engages with the first sliding pin 8, it can drive the first sliding pin 8. The crystal-absorbing plate 20 stays at a specified height for a period of time, providing a working space for its left and right swing. When the cylindrical cam 4 rotates to engage with the inclined groove of the V-shaped groove, it will drive the corresponding first sliding pin 8 and the crystal-absorbing plate 20 to move downward. When the cylindrical cam 4 rotates to engage with the flat groove section of the V-shaped groove, it will cause the first sliding pin 8 and the crystal-absorbing plate 20 to stop briefly again. At this time, the crystal-absorbing plate 20 works to absorb or release crystals. When the cylindrical cam 4 rotates to engage with the other inclined groove section of the V-shaped groove, it will cause the first sliding pin 8 and the crystal-absorbing plate 20 to move upward and reset, so that the first sliding pin 8 enters the annular groove again, and the cycle repeats.

[0043] A main shaft 18 is rotatably connected to the inner wall of the middle section of the horizontal plate 5. An extension arm 19 is fixedly connected to the upper end of the outer surface of the main shaft 18. The crystal-absorbing plate 20 is mounted on the extension arm 19. A transmission cylinder 17 is slidably connected to the middle of the outer surface of the main shaft 18. A dial 16 is fixedly connected to the outer surface of the transmission cylinder 17. A driving spur gear 9 is coaxially fixed to the lower end of the cylindrical cam 4. A driven spur gear 10 meshes with one side of the outer surface of the driving spur gear 9. A driving pulley 11 is coaxially fixed to the lower ends of the driving spur gear 9 and the driven spur gear 10, respectively. A driven pulley 13 is connected to the front end of the driving pulley 11. A lever 14 that cooperates with the dial 16 is coaxially fixed to the lower end of the driven pulley 13, respectively. A fan-shaped locking plate 15 that meshes with the dial 16 is coaxially fixed to the lower end of the lever 14, respectively.

[0044] like Figures 4-7 As shown, a base plate 7 is fixedly connected to the inner wall of the lower end of the support box 2. The transmission cylinder 17 is rotatably connected to the inner wall of the base plate 7. The transmission cylinder 17 and the main shaft 18 are connected by a spline. When the transmission cylinder 17 rotates, it can drive the main shaft 18 to rotate, and the main shaft 18 can slide up and down on the inner wall of the transmission cylinder 17. The dial 16, lever 14, and fan-shaped locking plate 15 are installed and shaped as follows. Figure 7As shown, the lever 14 and the sector-shaped locking plate 15 are both installed on the left and right sides of the dial 16. A rotating shaft is fixedly connected to the center of the lever 14, the sector-shaped locking plate 15, and the driven pulley 13, and the rotating shaft is rotatably connected to the inner wall of the base plate 7. A rotating shaft is fixedly connected to the center of the driving spur gear 9 and the corresponding driving pulley 11, and the rotating shaft is rotatably connected to the inner wall of the support box 2. Figure 6 As shown, the driving spur gear 9, driven spur gear 10, driving pulley 11, and driven pulley 13 can drive the two levers 14 to rotate synchronously in opposite directions. When the two levers 14 rotate synchronously in opposite directions, they can drive the dial 16 to rotate intermittently back and forth by 90 degrees through cooperation with the dial 16. Then, through the engagement of the sector-shaped locking plate 15 with the dial 16, the dial 16 can have a self-locking function when it stops briefly after intermittently rotating 90 degrees. Therefore, when the cylindrical cam 4 rotates, it can drive the horizontal plate 5 to move up and down intermittently. When the horizontal plate 5 moves up and down intermittently, it can drive the corresponding main shaft 18, extension arm 19, and crystal suction plate 20 to move up and down intermittently. When the cylindrical cam 4 rotates, it can drive the two levers 14 to rotate through the driving spur gear 9, driven spur gear 10, driving pulley 11, and driven pulley 13. When the two levers 14 rotate, they can drive the corresponding dial 16 to rotate through cooperation with the dial 16. 6. The transmission cylinder 17 intermittently rotates 90 degrees forward and backward. When the transmission cylinder 17 rotates, it drives the corresponding main shaft 18 to rotate and the extension arm 19 to swing, i.e., the crystal suction plate 20 to swing. Therefore, the crystal suction plate 20 will intermittently swing left and right. Through the cooperation of the dial 16, the lever 14, and the cylindrical cam 4, the crystal suction plate 20 can be driven to swing to the top of the left and then stop intermittently. The corresponding crystal suction plate 20 will then move downward. When it moves to the bottom, it will stop briefly for a short time. The corresponding suction cup 21 will work to adsorb the crystal and fix it at the lower end of the suction cup 21. After the crystal is adsorbed and fixed, the crystal suction plate 20 will move upward. After the crystal suction plate 20 moves upward to the top, it will stop intermittently. At this time, the corresponding crystal suction plate 20 will swing in the opposite direction to the other end, i.e., the upper position of the P crystal grain 77 plate. The crystal suction plate 20 will then move downward to place the crystal in the designated position, thus completing the screen printing work in a continuous cycle.

[0045] The inner wall of the top of the support box 2 is fixedly connected to a limiting cylinder 25. The inner wall of the limiting cylinder 25 is slidably connected to a long shaft 24 that is rotatably connected to the main shaft 18. The upper end of the outer surface of the long shaft 24 is fixedly connected to a limiting rod 23. The other end of the limiting rod 23 is hinged to a limiting arm 22 that is parallel to the extension arm 19. The crystal-absorbing plate 20 is hinged to the other end that is hinged to the limiting arm 22 and the extension arm 19.

[0046] like Figures 4-7As shown, the long shaft 24 is slidably connected to the inner wall of the limiting cylinder 25. The limiting cylinder 25 and the long shaft 24 are splined. When the main shaft 18 rotates, the limiting cylinder 25 limits the long shaft 24, preventing the long shaft 24 and the limiting rod 23 from rotating. When the main shaft 18 moves up and down, it can drive the long shaft 24 and the limiting rod 23 to move up and down. Further details are omitted. The extension arm 19, the limiting arm 22, the limiting rod 23, and the crystal-absorbing plate 20 are installed and shaped as follows: Figure 7 As shown, the two structures are indirectly connected to form a parallelogram mechanism. By fixing the limiting rod 23, which is one side of the parallelogram, when the extension arm 19 swings, it can drive the crystal suction plate 20 to rotate to the left or right, always keeping it parallel to the limiting rod 23. This allows the corresponding suction cup 21 to always move parallel to the limiting rod 23 after adsorbing the crystal, preventing the crystal from flipping and thus preventing misalignment when picking up or placing the crystal.

[0047] A second motor 26 is fixedly connected to the right side of the upper surface of the operating table 1. A long threaded rod 27 is fixedly connected to the output end of the second motor 26. The carrier base 28 is slidably connected to the upper surface of the operating table 1. The carrier base 28 is also threadedly connected to the outer surface of the long threaded rod 27. A short threaded rod 30 is rotatably connected to the inner wall of the carrier base 28. The carrier support 32 is slidably connected to the carrier base 28. A threaded seat 31 that is threadedly connected to the short threaded rod 30 is fixedly connected to the lower surface of the carrier support 32.

[0048] like Figures 8-9 As shown, the second motor 26 provides rotational power to the long threaded rod 27. A bearing seat is rotatably connected to the front end of the outer surface of the long threaded rod 27, and the bottom end of the bearing seat is fixed to the upper surface of the operating table 1, limiting the long threaded rod 27 to only rotate. A long threaded cylinder 29 is fixed to the inner wall of the carrier base 28, and the long threaded cylinder 29 is threadedly connected to the outer surface of the long threaded rod 27. This is equivalent to the carrier base 28 being threadedly connected to the outer surface of the long threaded rod 27, allowing the carrier base 28 to slide back and forth on the upper surface of the operating table 1. An electric motor is fixed to the short threaded rod 30. The machine can provide rotational power to the short threaded rod 30. The vehicle support 32 can be slidably connected to the upper surface of the vehicle base 28. When the first motor 3 is started, it can drive the long threaded rod 27 to rotate. The rotation of the long threaded rod 27 will drive the corresponding vehicle base 28, vehicle support 32, and vehicle plate 49 to move back and forth. When the short threaded rod 30 rotates, it will cause the threaded seat 31, vehicle support 32, and vehicle plate 49 to move left and right through the threaded connection with the threaded seat 31, thereby controlling the vehicle plate 49 to move back and forth or left and right.

[0049] Locking devices are provided on the inner walls of both ends of the carrier support 32. The locking devices include positioning boxes 50 that are slidably connected to the inner walls of the carrier support 32. Positioning holes that cooperate with the corresponding positioning boxes 50 are opened on the left and right end surfaces of the carrier plate 49. Positioning pins 52 are slidably connected to the inner walls of the front and rear ends of the positioning boxes 50. Locking holes that cooperate with the positioning pins 52 are opened on the inner walls on both sides of the positioning holes. Movable control plates 61 are provided on the left and right sides of the carrier support 32. When the control plates 61 move, they can cause the positioning pins 52 to move inward and the positioning boxes 50 to move downward.

[0050] like Figures 14-15 As shown in Figure 19, the positioning box 50 is slidably connected to the inner wall of the vehicle base 28, as shown in Figure 19. Figure 15 As shown, the shape of the positioning hole corresponds to that of the positioning box 50, so that when the positioning box 50 is inserted into the positioning hole, it restricts the movement of the carrier plate 49 back and forth or left and right. A top cone 51 is fixed to the upper surface of the positioning box 50. The function of the top cone 51 is to facilitate the smooth insertion of the positioning box 50 into the positioning hole. The positioning pin 52 slides back and forth on the inner wall of the positioning box 50. When the positioning pin 52 pops outward, it can restrict the upward movement of the carrier plate 49 by engaging with the locking hole, thereby assisting in completing accurate screen printing. The positioning pin 52 and the positioning box 50 can limit the up and down or left and right movement of the carrier plate 49. The movable control plate 61 can drive the positioning pin 52 to move inward when it moves, and when it moves to the top, it will drive the positioning box 50 to move downward. It can control the positioning box 50, the positioning pin 52 and the carrier plate 49 to engage or disengage, which is convenient for replacing the new carrier plate 49 and completing the automatic feeding or unloading work.

[0051] The inner end face of the positioning pin 52 is fixedly connected to a tension spring pad 54, and the outer surface of the positioning pin 52 is fitted with a second tension spring 53 that cooperates with the tension spring pad 54. The inner end face of the tension spring pad 54 is hinged to a first connecting rod 55. The inner ends of the two first connecting rods are hinged to a middle connecting rod 56 that is slidably connected to the positioning box 50. The inner wall of the lower end of the middle connecting rod 56 is fixedly connected to a second movable pin 60, and the lower end of the positioning box 50 is fixedly connected to a first movable pin 59. The inner wall of the upper end of the control plate 61 is provided with a first guide groove 62 that cooperates with the first movable pin 59, and the inner wall of the lower end of the control plate 61 is provided with a second guide groove 63 that cooperates with the second movable pin 60.

[0052] like Figures 18-19 As shown, the outer end face of the second tension spring 53 is fixed to the inner wall of the positioning box 50, and the inner end face of the second tension spring 53 is fixed to the corresponding tension spring pad 54. Through the tension of the second tension spring 53 itself, the tension spring pad 54 and the positioning pin 52 can always have an outward driving force. Figure 19As shown, the central connecting rod 56 is slidably connected to the inner wall of the positioning box 50. First guide rods 57 are fixed to the front and rear sides of the lower surface of the positioning box 50, respectively. Two spring supports 78 are fixed to the inner wall of the carrier support 32. The first guide rods 57 are slidably connected to the inner walls of the corresponding spring supports 78. Second springs 58 are fitted onto the outer surfaces of the first guide rods 57, and the function of the second springs 58 is to drive the positioning box 50 with an upward driving force. A pin seat is fixed to the middle of the lower surface of the positioning box 50, and a first movable pin 59 is fixed to the inner wall of the pin seat, which is equivalent to the first movable pin 59 being fixed to the lower end of the positioning box 50. The installation and shape of the first movable pin 59, the second movable pin 60, the first guide groove 62, and the second guide groove 63 are as follows. Figure 18 As shown, the first guide groove 62 consists of a trapezoidal groove and a long flat groove, and the second guide groove 63 consists of a triangular groove and a long flat groove. The trapezoidal groove consists of two short inclined grooves and one short flat groove, and the triangular groove consists of two long inclined grooves. The short inclined grooves and the long inclined grooves have the same inclination and are parallel to each other. When the control plate 61 moves backward, the first movable pin 59 and the second movable pin 60 engage with the corresponding first guide groove 62 and second guide groove 63. When the first movable pin 59 engages in the short flat groove section, the positioning box 50 will be briefly stationary for a period of time. When the second movable pin 60 engages in the long inclined groove section of the triangular groove, the second sliding pin will move downward. When the second sliding pin moves downward, it will drive the middle connecting rod 56 to move downward. When the middle connecting rod 56 moves downward, it will drive the first connecting rod 55 to move downward. When the first connecting rod 55 moves downward, it will drive the two positioning boxes 62 and 63 to move downward. As the positioning pin 52 moves inward, when it fully enters the inner wall of the positioning box 50, the corresponding control plate 61 continues to move, causing the first movable pin 59 to engage with the short flat groove section and enter the short inclined groove section. The corresponding second sliding pin continues to engage in the long inclined groove section, resulting in the first movable pin 59 and the second movable pin 60 moving downward synchronously, i.e., the positioning box 50 and the positioning pin 52 moving downward synchronously. When the control plate 61 moves to the point where the first movable pin 59 and the second movable pin 60 simultaneously enter the long flat groove section, the corresponding positioning pin 52 and the positioning box 50 will move downward to completely disengage from the positioning hole. At this point, the corresponding carrier plate 49 can be disassembled and replaced. When the control plate 61 moves in the opposite direction, it can reset the positioning pin 52 and the positioning box 50 to their initial positions, engaging with the carrier plate 49 again, thereby limiting and fixing the carrier plate 49.

[0053] The inner wall of the front end of the operating table 1 is provided with a loading rack 34 that can move downward intermittently. The inner wall of the loading rack 34 is provided with multiple sets of material support components. Each set of material support components includes four material blocking seats 35 that are on the same horizontal plane and fixed to the inner wall of the loading rack 34. Material blocking wedges 37 are slidably connected to the inner wall of the material blocking seats 35 respectively. First springs 36 that cooperate with the material blocking wedges 37 are fixed to both sides of the bottom inner wall of the material blocking seats 35 respectively.

[0054] like Figure 1 ,10 As shown in Figure -11, the material support assembly can support the carrier plate 49. By ensuring that each set of material support assemblies is on the same horizontal plane, it can horizontally support the carrier plate 49. The material blocking wedge 37 can be slidably connected to the inner wall of the material blocking seat 35, as shown in Figure -11. Figure 11 As shown, the first spring 36 always exerts an inward elastic force on the stop wedge 37. Both ends of the stop wedge 37 are inclined surfaces. The carrier plates 49 are placed on the corresponding stop wedges 37. When the carrier base 28 and carrier support 32 move forward without load, that is, when there is no carrier plate 49 on the upper end of the corresponding carrier support 32, the carrier support 32 will move forward and contact the stop wedge 37 at the bottom. Under the action of the inclined surface of the stop wedge 37, the stop wedge 37 can enter the stop wedge. The inner wall of the corresponding stop seat 35 is compressed with the first spring 36. When the carrier support 32 moves downward to the front end, the corresponding carrier plate 49 will fall into the upper position of the carrier support 32. When the carrier support 32 continues to move backward, it can drive the carrier plate 49 to move backward, thereby completing the loading action of the carrier support 32. When the carrier support 32 moves backward and disengages from the stop wedge 37, the stop wedge 37 will pop out and reset under the elastic force of the first spring 36.

[0055] The loading rack 34 is slidably connected to the inner wall of the front end of the operating table 1. Square sliders 39 are slidably connected to the upper and lower ends and left and right sides of the inner wall of the middle section of the loading rack 34. A first threaded rod 38 is fixedly connected to the inner wall of each of the two square sliders 39. Two hollow cylinders 46 are rotatably connected to the inner wall of the front end of the operating table 1, each sleeved on the outer surface of the corresponding first threaded rod 38. Incompletely threaded cylinders 47 that mate with the first threaded rod 38 are fixedly connected to the inner wall of each hollow cylinder 46. A hinged joint is located at the non-center point of the upper surface of each hollow cylinder 46. Two centrally symmetrical pawls 44 are respectively rotatably connected to the upper end of the outer surface of the central cylinder with double-sided gears 43. The inner side of the double-sided gears 43 is respectively provided with ratchet wheels that mesh with the pawls 44. The left and right ends of the carrier base 28 are respectively fixed with spur racks 48 that cooperate with the corresponding double-sided gears 43. The inner end face of the square slider 39 is respectively fixed with a neutral spring 40. The upper end of the outer surface of the two first threaded rods 38 is respectively hinged with short connecting rods 42. The inner end of the two short connecting rods 42 is hinged with a handle 41.

[0056] like Figures 8-13 As shown, the carrier base 28 and the rack 48 are slidably connected to the upper surface of the operating table 1; the square slider 39 is slidably connected to the inner wall of the loading rack 34; the loading rack 34 is slidably connected to the inner wall of the front end of the operating table 1; the inner ends of the neutral springs 40 are respectively fixed to the inner wall of the loading rack 34; under normal conditions, the neutral springs 40 can keep the square slider 39 in a designated position, that is, the first threaded rod 38 is in a designated position; the pawl 44, double-sided gear 43, hollow cylinder 46, and incomplete threaded cylinder 47 are installed and shaped as follows. Figure 13As shown, spring plates 45 are fixedly connected to the inner end faces of the pawl 44, and the inner ends of the spring plates 45 are fixedly connected to the upper surface of the hollow cylinder 46. The function of the spring plates 45 is to limit the pawl 44 from always engaging with the ratchet teeth; under the elastic force of the neutral spring 40, the first threaded rod 38 can always engage with the incompletely threaded cylinder 47, as shown. Figure 12 As shown, when the incompletely threaded cylinder 47 meshes with the first threaded rod 38, the height of the loading rack 34 can be stably locked. When the carrier base 28, carrier support 32, and rack 48 move from back to front during loading, when the carrier base 28 and carrier support 32 move to the bottom position of the loading rack 34, the rack 48 will meet the double-sided gear 43, which will drive the double-sided gear 43 to rotate in the forward direction. The rack 48, under the engagement of the pawl 44, will not drive the pawl 44 or the hollow cylinder 46 to rotate. When the rack 48 moves from back to front, it will only drive the double-sided gear 43 to rotate, not the double-sided hollow cylinder 46. After the loading is completed on the carrier support 32, i.e., when it moves forward and backward to reset, i.e., when the rack 48 moves from back to front... When moving forward and backward, the double-sided gear 43 is driven to reverse. The corresponding pawl 44, engaged by the ratchet, drives the hollow cylinder 46 to rotate. The rotation of the hollow cylinder 46, in turn, drives the incompletely threaded cylinder 47 to rotate. When the incompletely threaded cylinder 47 rotates, it engages with the first threaded rod 38, driving the first threaded rod 38 and the loading rack 34 downwards. This causes the corresponding next carrier plate 49 to move downwards to a designated position. Through the engagement of the rack 48 and the double-sided gear 43, the double-sided gear 43 and the incompletely threaded cylinder 47 can always rotate a specified number of times, ensuring that the incompletely threaded cylinder 47 is always positioned inside the two first threaded rods 38. The short connecting rod 42, handle 41, and first threaded rod 38 are installed and shaped as follows: Figure 12 As shown, when the handle 41 moves upward, it drives the two corresponding short connecting rods 42 to move inward or outward. When the loading rack 34 needs to be reset, the handle 41 is driven to move upward. When the handle 41 moves upward, the two short connecting rods 42 can drive the corresponding first threaded rod 38 to move outward, stretching the corresponding neutral spring 40. When the first threaded rod 38 moves outward, it will disengage from the corresponding incomplete threaded cylinder 47. When the incomplete threaded cylinder 47 disengages from the first threaded rod 38, the corresponding loading rack 34 can then move upward and reset to its initial position.

[0057] The front surface of the control board 61 is fixed with first connecting rods 65 on both the upper and lower sides. The front surfaces of the four first connecting rods 65 are fixed with a first clutch plate 66. The lower front side of the loading rack 34 is provided with a baffle 70 that cooperates with the first clutch plate 66. The rear surface of the control board 61 is fixed with second connecting rods 68 on both the upper and lower sides. The rear surfaces of the four second connecting rods 68 are fixed with a second clutch plate 69. The rear side of the upper surface of the operating table 1 is fixed with a discharge table 33 that cooperates with the second clutch plate 69. The outer surfaces of the second connecting rods 68 are respectively fitted with long springs 67 that cooperate with the control board 61.

[0058] like Figure 8 , 10 As shown in Figures 16-18, the control plate 61 is slidably connected to the inner walls of the left and right ends of the carrier support 32. The installation and shape of the first connecting rod 65, the second connecting rod 68, the first clutch plate 66, the second clutch plate 69, and the long spring 67 are as follows. Figure 17As shown, spring seats are fixedly connected to the rear side of the inner end face of the carrier support 32. One end of the long spring 67 is fixedly connected to the spring seat, and the other end of the long spring 67 is fixedly connected to the control plate 61. The function of the long spring 67 is to reset the control plate 61 to a designated position. The inner wall of the carrier support 32 is provided with multiple rotatable rotating rollers, and the transmission roller 64 is driven by a motor. When it is necessary to unload the carrier plate 49, the carrier base 28 and the carrier support 32 are driven to move backward. That is, the corresponding control plate 61, the first connecting rod 65, the second connecting rod 68, the long spring 67, the first clutch plate 66, and the second clutch plate 69 move backward synchronously. When the second clutch plate 69 moves backward and meets the unloading platform 33, if it continues to move backward, the second clutch plate 69 will unload. When the material platform 33 stops moving backward, the corresponding control plate 61 stops moving backward. At this time, the corresponding carrier support 32 and other components continue to move backward and will move forward relative to the control plate 61. When the control plate 61 moves forward, the engagement of the first movable pin 59, the second movable pin 60 and the corresponding first guide groove 62, the second guide groove 63 will cause the corresponding positioning box 50 and positioning pin 52 to disengage from the carrier plate 49. At this time, by starting the motor to rotate the transmission roller 64, the carrier plate 49 can be moved to the unloading platform 33, thereby completing the unloading. When the carrier base 28 and the carrier support 32 move forward and reset, the positioning box 50 and positioning pin 52 can be reset to the initial position under the elastic force of the long spring 67, the second tension spring 53 and the second spring 58.When the carrier base 28 and carrier support 32 move forward to load materials, the corresponding first clutch plate 66 will contact the baffle 70. The first clutch plate 66 will meet the baffle 70 before the carrier support 32 is fully inserted into the bottom of the loading rack 34. When the carrier support 32 moves backward to allow the positioning box 50 and positioning pin 52 to immediately enter the loading rack 34, the corresponding first clutch plate 66 will then contact the baffle 70. The baffle 70 will then prevent the control... When plate 61 moves backward relative to carrier support 32, it compresses long spring 67. The backward movement of control plate 61, through engagement with first movable pin 59 and second movable pin 60, causes positioning pin 52 and positioning box 50 to move downward into the inner wall of carrier support 32. At this point, as carrier support 32 continues to move backward, the first movable pin 59 and second movable pin 60 engage with the corresponding long flat grooves, meaning the corresponding positioning box 50 and positioning pin 52 enter the inner wall of carrier support 32. The downward movement ceases. When the carrier support 32 is fully inserted into the inner wall of the loading rack 34, the carrier plate 49 will fall to the upper position of the carrier support 32 under gravity. When the carrier support 32 moves backward to reset, the corresponding long spring 67 is in a compressed state. Therefore, the control plate 61 will move forward relative to the carrier support 32, causing the first movable pin 59 and the second movable pin 60 to exit the long flat groove section. When the first movable pin 59 and the second movable pin 60 exit the long flat groove section, they enter the triangular groove section and the trapezoidal groove section. At this time, the positioning box 50 and the positioning pin 52 can move upward to reset under the elastic force of the second tension spring 53, the second spring 58, and the long spring 67, thus fixing the carrier plate 49 again. Further details are omitted. The baffle 70 can also block the bottommost carrier plate 49 on the loading rack 34, preventing the carrier plate 49 from moving backward when the carrier support 32 moves backward to load material.

[0059] In use, when the first motor 3 drives the cylindrical cam 4 to rotate, it can drive the corresponding crystal-absorbing plate 20 and electric suction cup 21 to move up and down intermittently and swing left and right intermittently. When the crystal-absorbing plate 20 and electric suction cup 21 swing to the left to the designated position, that is, the upper position of the corresponding N crystal grain 75 carrier plate, the cylindrical cam 4 continues to rotate, which will drive the crystal-absorbing plate 20 and electric suction cup 21 to move downward. When the electric suction cup 21 moves downward to the upper position of the corresponding N crystal grain 75, the electric suction cup 21 works to adsorb and fix the N crystal grain 75. At this time, the cylindrical cam 4 continues to rotate, which will drive the crystal-absorbing plate 20 and electric suction cup 21 to move downward. When the electric suction cup 21 moves downward to the upper position of the corresponding N crystal grain 75, the electric suction cup 21 works to adsorb and fix the N crystal grain 75. As the cylindrical cam 4 continues to rotate, it drives the crystal-absorbing plate 20, the electric suction cup 21, and the N crystal grain 75 to move upward, causing the N crystal grain 75 to detach from the inner wall of the crystal groove 74. After moving downward to the top position, the cylindrical cam 4 continues to rotate, driving the corresponding crystal-absorbing plate 20, the electric suction cup 21, and the N crystal grain 75 to swing to the right, i.e., move onto the P crystal grain 77 substrate 76. At this time, the cylindrical cam 4 continues to rotate, driving the corresponding electric suction cup 21 and the N crystal grain 75 to move downward. When they reach the designated position, the electric suction cup 21 stops working, thus allowing the N crystal grain to... When 75 is placed on the corresponding P crystal grain 77, the circumferential cam continues to rotate, driving the crystal suction plate 20 and the electric suction cup 21 to move upward and then swing to the left, repeating this cycle to complete the screen printing. Vision sensors 71 are fixed to the left and right sides of the front surface of the support box 2, respectively. The vision sensors 71 can monitor the N crystal grain 75 plate 73 and the P crystal grain 77 substrate 76 to prevent missed or excessive printing. The vision sensors 71 are existing technology and will not be described in detail. Through the set moving carrier 72, after the N crystal grain 75 is loaded, it can drive the N crystal grain 75... The plate 73 moves, causing the next N crystal grain 75 to move to the designated position, thus enabling the electric suction cup 21 to pick up the material again. By setting a movable carrier base 28 and carrier support 32, the movement of the P crystal grain 77 substrate 76 can be controlled. When the corresponding P crystal grain 77 has finished loading, the next P crystal grain 77 will reach the designated position, thus enabling the electric suction cup 21 to release the material again. The PLC controls the visual sensor 71, each motor, and the electric suction cup 21 to work together to complete the screen printing work, replacing manual installation, saving manpower, and forming automated production.

[0060] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An automatic positioning screen printing device for DBC copper-clad substrates, comprising an operating table (1), characterized in that: The upper rear side of the operating table (1) is provided with a screen printing device. The screen printing device includes a support box (2) fixed to the operating table (1). The support box (2) is provided with a rotatable cylindrical cam (4). The front end of the cylindrical cam (4) is provided with a crystal suction plate (20). When the cylindrical cam (4) rotates, it can make the crystal suction plate (20) move up and down intermittently and swing intermittently. The upper right side of the operating table (1) is provided with a carrier base (28) that can move back and forth. The upper end of the carrier base (28) is provided with a carrier support (32) that can move left and right. The upper end of the carrier support (32) is provided with a carrier plate (49). The vehicle support (32) has locking devices on its inner walls at both ends. The locking devices include positioning boxes (50) that are slidably connected to the inner walls of the vehicle support (32). The left and right ends of the vehicle plate (49) are respectively provided with positioning holes that cooperate with the corresponding positioning boxes (50). The inner walls at the front and rear ends of the positioning boxes (50) are respectively slidably connected with positioning pins (52). The inner walls on both sides of the positioning holes are respectively provided with locking holes that cooperate with the positioning pins (52). The left and right sides of the vehicle support (32) are respectively provided with movable control plates (61). When the control plates (61) move, they can make the positioning pins (52) move inward and then the positioning boxes (50) move downward. The inner wall of the front end of the operating table (1) is provided with a loading rack (34) that can move downwards intermittently. The loading rack (34) is slidably connected to the inner wall of the front end of the operating table (1). Square sliders (39) are slidably connected to the upper and lower ends and left and right sides of the inner wall of the middle part of the loading rack (34). A first threaded rod (38) is fixedly connected to the inner wall of each of the two square sliders (39). Two hollow cylinders (46) are rotatably connected to the inner wall of the front end of the operating table (1) and are sleeved on the outer surface of the corresponding first threaded rods (38). The inner wall of the hollow cylinders (46) is fixedly connected to an incompletely threaded cylinder (47) that cooperates with the first threaded rod (38). 46) Two centrally symmetrical pawls (44) are hinged at the non-center of the upper surface. Double-sided gears (43) are rotatably connected to the upper surface of the outer surface of the central cylinder. The inner side of the double-sided gears (43) is provided with ratchet wheels that mesh with the pawls (44). The left and right ends of the carrier base (28) are respectively fixed with straight racks (48) that cooperate with the corresponding double-sided gears (43). A neutral spring (40) is fixed to the inner end face of the square slider (39). Short connecting rods (42) are hinged to the upper surface of the outer surface of the two first threaded rods (38). A handle (41) is hinged to the inner end of the two short connecting rods (42).

2. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 1, characterized in that: The upper surface of the support box (2) is fixedly connected to the first motor (3), the cylindrical cam (4) is fixedly connected to the output end of the first motor (3), the front end of the outer surface of the cylindrical cam (4) is engaged with the first sliding pin (8), the inner walls of the front sides of the support box (2) are respectively fixedly connected to the side plates (6), the inner walls of the two side plates (6) are slidably connected to a horizontal plate (5), the first sliding pin (8) is fixedly connected to the horizontal plate (5), and the crystal suction plate (20) is installed at the lower end of the horizontal plate (5).

3. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 2, characterized in that: The inner wall of the middle section of the horizontal plate (5) is rotatably connected to a main shaft (18). An extension arm (19) is fixedly connected to the upper end of the outer surface of the main shaft (18). The crystal-absorbing plate (20) is mounted on the extension arm (19). A transmission cylinder (17) is slidably connected to the middle of the outer surface of the main shaft (18). A dial (16) is fixedly connected to the outer surface of the transmission cylinder (17). A drive spur gear (9) is coaxially fixed to the lower end of the cylindrical cam (4). A driven spur gear (10) meshes with one side of the outer surface of the drive spur gear (9). A drive pulley (11) is coaxially fixed to the lower ends of the drive spur gear (9) and the driven spur gear (10). A drive pulley (11) is coaxially fixed to the front end of the drive pulley (11). A driven pulley (13) is coaxially connected to the front end of the driven pulley (13). A lever (14) that cooperates with the dial (16) is coaxially fixed to the lower end of the driven pulley (13). A fan-shaped locking plate (15) that meshes with the dial (16) is coaxially fixed to the lower end of the lever (14).

4. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 3, characterized in that: The support box (2) has a limiting cylinder (25) fixedly attached to the inner wall of the top end. The inner wall of the limiting cylinder (25) is slidably connected to a long shaft (24) that is rotatably connected to the main shaft (18). The upper end of the outer surface of the long shaft (24) is fixedly attached to a limiting rod (23). The other end of the limiting rod (23) is hinged to a limiting arm (22) that is parallel to the extension arm (19). The crystal suction plate (20) is hinged to the other end of the limiting arm (22) and the extension arm (19).

5. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 1, characterized in that: A second motor (26) is fixedly connected to the right side of the upper surface of the operating table (1). A long threaded rod (27) is fixedly connected to the output end of the second motor (26). The vehicle base (28) is slidably connected to the upper surface of the operating table (1). The vehicle base (28) is threadedly connected to the outer surface of the long threaded rod (27). A short threaded rod (30) is rotatably connected to the inner wall of the vehicle base (28). The vehicle support (32) is slidably connected to the vehicle base (28). A threaded seat (31) that is threadedly connected to the short threaded rod (30) is fixedly connected to the lower surface of the vehicle support (32).

6. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 1, characterized in that: The inner end face of the positioning pin (52) is fixedly connected to a tension spring pad (54), and the outer surface of the positioning pin (52) is fitted with a second tension spring (53) that cooperates with the tension spring pad (54). The inner end face of the tension spring pad (54) is hinged to a first connecting rod (55). The inner ends of the two first connecting rods are hinged to a middle connecting rod (56) that is slidably connected to the positioning box (50). The inner wall of the lower end of the middle connecting rod (56) is fixedly connected to a second movable pin (60). The lower end of the positioning box (50) is fixedly connected to a first movable pin (59). The inner wall of the upper end of the control plate (61) is provided with a first guide groove (62) that cooperates with the first movable pin (59), and the inner wall of the lower end of the control plate (61) is provided with a second guide groove (63) that cooperates with the second movable pin (60).

7. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 1, characterized in that: The inner wall of the loading rack (34) is provided with multiple sets of material support components. Each set of material support components includes four material stop seats (35) that are on the same horizontal plane and fixed to the inner wall of the loading rack (34). The inner wall of the material stop seat (35) is slidably connected with a material stop wedge (37). The bottom inner wall of the material stop seat (35) is fixed with a first spring (36) that cooperates with the material stop wedge (37).

8. The automatic positioning screen printing equipment for DBC copper-clad substrates as described in claim 1, characterized in that: The front surface of the control board (61) is fixed with first connecting rods (65) on the upper and lower sides respectively. The front surfaces of the four first connecting rods (65) are fixed with a first clutch plate (66). The lower front side of the loading rack (34) is provided with a baffle (70) that cooperates with the first clutch plate (66). The rear surface of the control board (61) is fixed with second connecting rods (68) on the upper and lower sides respectively. The rear surfaces of the four second connecting rods (68) are fixed with a second clutch plate (69). The rear side of the upper surface of the operating table (1) is fixed with a discharge table (33) that cooperates with the second clutch plate (69). The outer surfaces of the second connecting rods (68) are respectively fitted with long springs (67) that cooperate with the control board (61).

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