Crystal boat screen printing machine

Abstract

The utility model discloses a crystal boat screen printing machine which comprises a fixed machine table, movable machine tables are arranged on the two sides of the fixed machine table, and the movable machine tables are fixedly connected with the fixed machine table in a clamped mode. The rotating disc is arranged above the moving machine table, a plurality of wafer boat cabins are arranged on the rotating disc, wafer boat bodies are arranged in different layers in the wafer boat cabins, and a fifth motor is fixedly arranged in the middle of the interior of the moving machine table; the mounting frame is arranged in the side, close to the fixed machine table, of the movable machine table, a second driving belt wheel is arranged on the lower portion of the interior of the mounting frame, a second transmission belt wheel is arranged on the upper portion of the interior of the mounting frame, and a second belt is arranged between the second driving belt wheel and the second transmission belt wheel; and a moving seat is arranged outside the second belt. By means of the structure, the problems that generally, wafer boat feeding needs to be assisted by operators, and wafer boats are prone to accumulation after silk-screen printing is completed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silk screen printing, in particular to a crystal boat silk screen printing machine. Background Art

[0002] A Jingzhou screen printer is a mechanical device that uses a silk screen to print on a substrate. It is particularly well-suited for printing semiconductors and other microelectronic devices. Compared to other printing methods, a Jingzhou screen printer can produce vibrant colors, clean, neat, and detailed patterns, and is highly adaptable to various printing materials. As an efficient, high-precision, and environmentally friendly printing device, the Jingzhou screen printer has broad application prospects in the printing of semiconductor manufacturing, integrated circuits, LEDs, and other microelectronic products.

[0003] For example, the Chinese patent "Vertical Silk Screen Printing Machine for Carbon Crystal Plate" with announcement number CN20358031U includes a transport panel with a load-bearing surface, a bracket located above the transport panel, a lifting block capable of longitudinal movement is provided on the bracket, the lifting block is driven to move up and down by a lifting cylinder provided on the bracket, a transverse block is provided on the lifting block and moves transversely on the lifting block, the transverse block is driven to move by a transverse cylinder provided on the lifting block, a scraper is fixed on the transverse block, a printing screen capable of longitudinal movement is provided below the bracket, the printing screen is between the scraper and the transport panel, and a pressing block capable of longitudinal movement is provided below the bracket on one side of the printing screen, the pressing block has a clamping groove.

[0004] Although the above-mentioned existing technology can realize the silk screen printing operation, in actual use, on the one hand, the loading of the crystal boat usually requires the assistance of the operator. When loading the crystal boat, the operator needs to place the crystal boat on the silk screen printing table, resulting in the need for human assistance for each crystal boat, thereby increasing the workload of the personnel. On the other hand, the crystal boat is prone to accumulation after the silk screen printing is completed. After the silk screen printing is completed, the crystal boat is not removed from the silk screen printing machine in time, resulting in the crystal boats being squeezed and accumulated on each other after the silk screen printing is completed, causing the crystal boats to be damaged. Therefore, it does not meet the existing needs. For this purpose, we propose a crystal boat silk screen printing machine. Utility Model Content

[0005] The purpose of the present invention is to provide a wafer boat screen printing machine to solve the problems in the above background technology that the wafer boat loading usually requires the assistance of operators and the wafer boat is prone to accumulation after the screen printing is completed.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a screen printing machine comprising a fixed machine platform, wherein movable machine platforms are provided on both sides of the fixed machine platform, and the movable machine platforms are fixedly connected to the fixed machine platform; and further comprising:

[0007] a rotating disk disposed above the mobile platform, with a plurality of wafer boat bins disposed on the rotating disk, and the wafer boat bins are distributed in an annular manner and at equal intervals, with wafer boat bodies disposed at different levels within the wafer boat bins, and a fifth motor fixedly disposed in the middle position within the mobile platform, with the output shaft of the fifth motor extending above the mobile platform and fixedly connected to the rotating disk;

[0008] The mounting frame is arranged inside the mobile machine near the fixed machine, and the mounting frame is fixedly connected to the inner wall of the mobile machine, a second driving pulley is provided at the lower part of the interior of the mounting frame, a second transmission pulley is provided at the upper part of the interior of the mounting frame, a second belt is provided between the second driving pulley and the second transmission pulley, a movable seat is provided on the outside of the second belt, and the movable seat is slidably connected to the mounting frame, a second push rod is provided at the upper end of the movable seat, and the upper end of the second push rod extends to the top of the mobile machine and contacts the lower end of the crystal boat warehouse, a fourth motor is fixedly provided at the lower part of the outside of the mounting frame, and the output shaft of the fourth motor extends to the interior of the mounting frame and is fixedly connected to the second driving pulley.

[0009] Preferably, conveyor platforms are fixedly provided on both sides of the upper end of the fixed machine, and the interior of the conveyor platform is an open structure. A transfer mechanism is fixedly provided on the upper end of the mobile machine located between the conveyor platform and the rotating disk, and a screen printing mechanism is provided above the conveyor platform.

[0010] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The swing arm is connected to the swing arm by a up-down knob. The swing arm is connected to the swing arm by a hook portion. The swing arm is connected to the swing arm by a hook portion. The hook portion is connected to the swing arm by a hook portion.

[0011] Preferably, fixed plates are fixedly provided at the front and rear ends inside the fixed machine, mounting rods are fixedly provided on both sides between the fixed plates, two rotating rods are provided on the outside of the mounting rods, and the rotating rods are rotatably connected to the mounting rods, and the upper ends of the rotating rods are in contact with the movable frame, rubber wheels are provided at the upper and lower ends of the mounting rods, and the rubber wheels are rotatably connected to the mounting rods, and a cam is provided at the middle position in the middle of the fixed plates, and the positions of the cam and the rubber wheel correspond.

[0012] Preferably, a third motor is fixedly provided at the lower end of the fixed plate, a third drive pulley is fixedly provided on the outside of the output shaft of the third motor, a third transmission pulley is provided at the rear end of the outside of the fixed plate, and the third transmission pulley is fixedly connected to the cam, and a third belt is provided on the outside of the third transmission pulley and the third drive pulley.

[0013] Preferably, a placement box is fixedly provided at the middle position of the upper end of the fixed machine platform, and feeding ports are provided on both sides of the placement box, the feeding ports are distributed front and back, and the feeding ports correspond to the positions of the fixed frame, two conveying mechanisms are provided at the front end of the lower interior of the placement box, and the conveying mechanisms correspond to the positions of the feeding ports, a second motor is provided on one side of the outside of the conveying mechanism, and the output shaft of the second motor is fixedly connected to the conveying mechanism.

[0014] Preferably, the rear ends of both sides of the placement box are provided with first driving pulleys, the front ends of both sides of the placement box are provided with first transmission pulleys, a first belt is provided on the outside between the first driving pulley and the first transmission pulley, and the placement box is fixedly provided with fixed rods on both sides of the upper inner part near the center of the placement box, and two unloading mechanisms are provided on the outside of the fixed rods, the unloading mechanism is slidably connected to the fixed rod, and both sides of the unloading mechanism are fixedly connected to the first belt, and a first motor is fixedly provided on one side of the outside of the placement box, and the output shaft of the first motor extends to the interior of the placement box and is fixedly connected to the first driving pulley.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model can automatically load the wafer boat through the rotating disk and the second push rod. When the wafer boat body is loaded, the fifth motor is turned on at this time, so that the output shaft of the fifth motor drives the rotating disk together with the wafer boat bin to rotate, so that the wafer boat bin rotates to the front of the transfer mechanism. At this time, a wafer boat body is transferred to the conveying table through the transfer mechanism. At this time, the fourth motor is turned on at this time, so that the output shaft of the fourth motor drives the second driving pulley to rotate, and the movable base is driven to move in the vertical direction through the second driving pulley, the second transmission pulley and the second belt. At this time, the second push rod on the movable base moves upward together, and the wafer boat bin moves upward through the second push rod, so that the transfer mechanism removes the wafer boat bodies of different layers from the wafer boat bin, thereby reducing the workload of the operator.

[0017] 2. The utility model can automatically unload the wafer boat after silk-screen printing is completed through the unloading mechanism and the conveying mechanism. After the silk-screen printing operation is completed on the wafer boat body, the wafer boat body enters the interior of the placement box through the feeding port, and the feeding ports on both sides are distributed one in front and one in the back. At the same time, the wafer boat body entering the interior of the placement box moves to the conveying mechanism, and the conveying mechanism transfers the silk-screened wafer boat body to the interior of the placement box until the wafer boat body fills the conveying mechanism. At this time, the first motor is turned on to make the output shaft of the first motor drive the first driving pulley to rotate. At the same time, the first belt and the first transmission pulley on the first driving pulley are moved, and the unloading mechanism is driven to move by the first belt until the unloading mechanism moves to the top of the conveying mechanism. The unloading mechanism removes the wafer boat body on the conveying mechanism to avoid accumulation and squeezing of the silk-screened wafer boat body, thereby preventing the wafer boat body from being damaged due to squeezing.

[0018] When the cam rotates, the protruding structure on the cam will squeeze and collide with the rubber wheel, and the driving mechanism of the rubber wheel will rotate on the mounting rod. When the cam rotates to a vertical position, the rotating rod will press against the movable frame and move the movable frame upward. At the same time, the first push rod on the movable frame will push out the crystal boat body placed on the limit plate. After the crystal boat body is pushed out, the first push rod moves forward to make the crystal boat body move on the limit plate until the crystal boat body moves to the positioning plate and performs silk screen printing. At this time, the crystal boat body that has completed silk screen printing is again transported to the placement box by the first push rod on the other side, which is more accurate than the crawler conveying and cam conveying method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0020] Figure 2 It is a forward schematic diagram of the internal structure of the utility model;

[0021] Figure 3 It is a reverse schematic diagram of the internal structure of the utility model;

[0022] Figure 4 For the utility model Figure 1 A partial enlarged view of area A in the middle;

[0023] Figure 5 For the utility model Figure 2 A partial enlarged view of area B in the middle;

[0024] Figure 6 For the utility model Figure 3 A partial enlarged view of the middle C area.

[0025] In the figure: 1. Fixed machine; 2. Mobile machine; 3. Rotating plate; 4. Crystal boat; 5. Crystal boat body; 6. Screen printing mechanism; 7. Conveyor platform; 8. Positioning platform; 9. Positioning plate; 10. Transfer mechanism; 11. Placement box; 12. Unloading mechanism; 13. Fixing rod; 14. Fixing seat; 15. Limiting roller; 16. First motor; 17. First driving pulley; 18. First belt; 19. First transmission pulley; 20. Second motor; 21. Fixing frame; 22. Conveyor mechanism; 23. Fixing plate; 24. Mobile Frame; 25. Third motor; 26. Cam; 27. Mounting rod; 28. Rotating rod; 29. ​​Rubber wheel; 30. First push rod; 31. Mounting frame; 32. Fourth motor; 33. Fifth motor; 34. Moving seat; 35. Second push rod; 36. Second belt; 37. Second drive pulley; 38. Second drive pulley; 39. Mounting ear plate; 40. Swing rod; 41. Limit plate; 42. Positioning disk; 43. Third drive pulley; 44. Third belt; 45. Third drive pulley; 46. Feed port. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-6 The present invention provides an embodiment of a screen printing machine, comprising a fixed machine platform 1, with movable machine platforms 2 provided on both sides of the fixed machine platform 1, and the movable machine platforms 2 being fixedly connected to the fixed machine platform 1; and further comprising:

[0028] A rotating disk 3 is disposed above the mobile platform 2. Several wafer boats 4 are arranged on the rotating disk 3 and are evenly spaced in a circular pattern. The wafer boats 4 have wafer boat bodies 5 arranged at different levels within the wafer boats 4. A fifth motor 33 is fixedly disposed in the middle of the mobile platform 2. The output shaft of the fifth motor 33 extends above the mobile platform 2 and is fixedly connected to the rotating disk 3.

[0029] The mounting frame 31 is arranged inside the mobile machine 2 near the fixed machine 1, and the mounting frame 31 is fixedly connected to the inner wall of the mobile machine 2. A second driving pulley 38 is provided at the bottom of the interior of the mounting frame 31, and a second transmission pulley 37 is provided at the top of the interior of the mounting frame 31. A second belt 36 is provided between the second driving pulley 38 and the second transmission pulley 37. A movable seat 34 is provided outside the second belt 36, and the movable seat 34 is slidably connected to the mounting frame 31. A second push rod 35 is provided at the upper end of the movable seat 34, and the upper end of the second push rod 35 extends to the top of the mobile machine 2 and contacts the lower end of the crystal boat warehouse 4. A fourth motor 32 is fixedly provided at the bottom of the exterior of the mounting frame 31, and the output shaft of the fourth motor 32 extends to the interior of the mounting frame 31 and is fixedly connected to the second driving pulley 38.

[0030] During use, when the crystal boat body 5 is loaded, the fifth motor 33 is turned on at this time, so that the output shaft of the fifth motor 33 drives the rotating disk 3 together with the crystal boat bin 4 to rotate, and the crystal boat bin 4 is rotated to the front of the transfer mechanism 10. At this time, a piece of crystal boat body 5 is transferred to the conveying table 7 through the transfer mechanism 10. At this time, the fourth motor 32 is turned on at this time, so that the output shaft of the fourth motor 32 drives the second drive pulley 38 to rotate, and the second drive pulley 38, the second transmission pulley 37 and the second belt 36 drive the movable seat 34 to move in the vertical direction. At this time, the second push rod 35 on the movable seat 34 moves upward together, and the crystal boat bin 4 is moved upward by the second push rod 35, so that the transfer mechanism 10 removes the crystal boat bodies 5 of different layers from the crystal boat bin 4.

[0031] See also Figure 1 A conveying platform 7 is fixedly provided on both sides of the upper end of the fixed machine 1, and the interior of the conveying platform 7 is an open structure. A transfer mechanism 10 is fixedly provided on the upper end of the mobile machine 2 between the conveying platform 7 and the rotating disk 3, and a screen printing mechanism 6 is provided above the conveying platform 7 to facilitate screen printing on the wafer boat body 5 through the screen printing mechanism 6.

[0032] See also Figure 2 、 Figure 3 and Figure 5A positioning platform 8 is provided at the middle position of the upper end of the conveying platform 7, a positioning plate 9 is fixedly provided on the upper end of the positioning platform 8, a positioning disc 42 is fixedly provided inside the positioning platform 8, and a fixing frame 21 is fixedly provided on the upper ends of the conveying platform 7 on both sides of the positioning platform 8. A limiting plate 41 is fixedly provided on the inner side of the fixing frame 21, and a fixing seat 14 is fixedly provided on the upper end of the fixing frame 21 close to the transfer mechanism 10, and a limiting roller 15 is provided inside the fixing seat 14. The conveying platform 7 is provided with a fixing frame 21 on both sides of the interior below the fixing frame 21. There is a movable frame 24, the lower end of the movable frame 24 is provided with a swing rod 40, and the swing rod 40 is rotatably connected to the movable frame 24, the lower end of the swing rod 40 is provided with a mounting ear plate 39, the lower end of the swing rod 40 is rotatably connected to the mounting ear plate 39, and the mounting ear plate 39 is fixedly connected to the fixed machine 1, and the upper end of the movable frame 24 close to the transfer mechanism 10 is provided with a first push rod 30, and the first push rod 30 is slidably connected to the movable frame 24, so that the crystal boat body 5 can be moved on the limit plate 41 through the first push rod 30.

[0033] See also Figure 2 、 Figure 3 and Figure 5 The front and rear ends of the fixed machine 1 are fixedly provided with fixed plates 23, and mounting rods 27 are fixedly provided on both sides between the fixed plates 23. Two rotating rods 28 are provided on the outside of the mounting rod 27, and the rotating rods 28 are rotatably connected to the mounting rod 27, and the upper ends of the rotating rods 28 are in contact with the movable frame 24. Rubber wheels 29 are provided at the upper and lower ends of the mounting rod 27, and the rubber wheels 29 are rotatably connected to the mounting rod 27. A cam 26 is provided at the middle position of the middle of the fixed plate 23, and the positions of the cam 26 and the rubber wheel 29 correspond to each other, so that the rotating rod 28 can rotate when passing through the cam 26.

[0034] See also Figure 2 、 Figure 3 and Figure 5 A third motor 25 is fixedly provided at the lower end of the fixed plate 23, and a third driving pulley 43 is fixedly provided on the outside of the output shaft of the third motor 25. A third transmission pulley 45 is provided at the rear end of the outside of the fixed plate 23, and the third transmission pulley 45 is fixedly connected to the cam 26. A third belt 44 is provided on the outside of the third transmission pulley 45 and the third driving pulley 43, so as to facilitate the rotation of the cam 26 by the third driving pulley 43.

[0035] See also Figure 3 and Figure 6A placement box 11 is fixedly provided at the middle position of the upper end of the fixed machine 1, and feeding ports 46 are provided on both sides of the placement box 11. The feeding ports 46 are distributed front and back, and the positions of the feeding ports 46 and the fixed frame 21 are corresponding. Two conveying mechanisms 22 are provided at the front end of the lower part of the placement box 11, and the positions of the conveying mechanisms 22 and the feeding ports 46 are corresponding. A second motor 20 is provided on one side of the outside of the conveying mechanism 22, and the output shaft of the second motor 20 is fixedly connected to the conveying mechanism 22, so as to facilitate the conveying of the silk-screened wafer boat body 5 through the conveying mechanism 22.

[0036] See also Figure 2 and Figure 3 , the rear ends of both sides of the placement box 11 are provided with first driving pulleys 17, the front ends of both sides of the placement box 11 are provided with first transmission pulleys 19, and the outside between the first driving pulley 17 and the first transmission pulley 19 is provided with a first belt 18, and the placement box 11 is fixedly provided with fixed rods 13 on both sides of the upper inner part near the center of the placement box 11, and two unloading mechanisms 12 are provided on the outside of the fixed rod 13, the unloading mechanism 12 is slidably connected to the fixed rod 13, and both sides of the unloading mechanism 12 are fixedly connected to the first belt 18, and a first motor 16 is fixedly provided on one side of the outside of the placement box 11, and the output shaft of the first motor 16 extends to the interior of the placement box 11 and is fixedly connected to the first driving pulley 17, so that the unloading mechanism 12 is driven to move by the first motor 16.

[0037] Working principle: When the wafer boat body 5 is being transported, the third motor 25 is turned on at this time, so that the output shaft of the third motor 25 drives the third driving pulley 43 to rotate, and the cooperation between the third driving pulley 43 and the third belt 44 drives the third transmission pulley 45 and the cam 26 to rotate. During the rotation of the cam 26, the protruding structure on the cam 26 will squeeze and collide with the rubber wheel 29, and the driving of the rubber wheel 29 will cause the rotating rod 28 to rotate on the mounting rod 27. During the rotation of the rotating rod 28 to the vertical state, it will press against the movable frame 24 and move the movable frame 24 upward. At the same time, the first ejector 30 on the movable frame 24 will eject the wafer boat body 5 placed on the limit plate 41. After the wafer boat body 5 is ejected, the first ejector 30 moves forward, causing the wafer boat body 5 to move on the limit plate 41 until the wafer boat body 5 moves to the positioning plate 42 and performs the silk-screen printing operation. At this time, the wafer boat body 5 that has completed silk-screen printing is again moved by the first ejector 3 on the other side 0 is conveyed to the placement box 11 for automatic unloading. After the wafer boat body 5 completes the screen printing operation, the wafer boat body 5 enters the interior of the placement box 11 through the feeding port 46, and the feeding ports 46 on both sides are distributed one in front and one in the back. At the same time, the wafer boat body 5 entering the placement box 11 moves to the conveying mechanism 22, and the conveying mechanism 22 transfers the screen-printed wafer boat body 5 to the interior of the placement box 11 until the wafer boat body 5 fills the conveying mechanism 22. At this time, the first motor 16 is turned on, so that the output shaft of the first motor 16 drives the first driving pulley 17 to rotate. At the same time, the first belt 18 and the first transmission pulley 19 on the first driving pulley 17 are moved, and the unloading mechanism 12 is driven by the first belt 18 to move until the unloading mechanism 12 moves to the top of the conveying mechanism 22. The wafer boat body 5 on the conveying mechanism 22 is removed by the unloading mechanism 12 to avoid accumulation and squeezing of the screen-printed wafer boat body 5.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A screen printing machine comprising a fixed machine platform (1), wherein a movable machine platform (2) is provided on both sides of the fixed machine platform (1), and the movable machine platform (2) is fixedly connected to the fixed machine platform (1); Its characteristics are: Also includes: A rotating disk (3) is arranged above the mobile platform (2); a plurality of crystal boat bins (4) are arranged on the rotating disk (3), and the crystal boat bins (4) are distributed in an annular manner and at equal intervals; crystal boat bodies (5) are arranged at different levels inside the crystal boat bins (4); a fifth motor (33) is fixedly arranged at a middle position inside the mobile platform (2), and an output shaft of the fifth motor (33) extends above the mobile platform (2) and is fixedly connected to the rotating disk (3); The mounting frame (31) is arranged inside the mobile platform (2) on a side close to the fixed platform (1), and the mounting frame (31) is fixedly connected to the inner wall of the mobile platform (2). A second driving pulley (38) is arranged below the interior of the mounting frame (31), and a second transmission pulley (37) is arranged above the interior of the mounting frame (31). A second belt (36) is arranged between the second driving pulley (38) and the second transmission pulley (37). The second belt (36) is provided with a A movable seat (34) is provided on the outside, and the movable seat (34) is slidably connected to the mounting frame (31); a second push rod (35) is provided on the upper end of the movable seat (34), and the upper end of the second push rod (35) extends to the top of the movable platform (2) and contacts the lower end of the crystal boat warehouse (4); a fourth motor (32) is fixedly provided below the outside of the mounting frame (31), and the output shaft of the fourth motor (32) extends to the inside of the mounting frame (31) and is fixedly connected to the second drive pulley (38).

2. The screen printing machine according to claim 1, characterized in that: A conveying platform (7) is fixedly provided on both sides of the upper end of the fixed machine (1), and the interior of the conveying platform (7) is an open structure. A transfer mechanism (10) is fixedly provided on the upper end of the mobile machine (2) located between the conveying platform (7) and the rotating disk (3), and a screen printing mechanism (6) is provided above the conveying platform (7).

3. The screen printing machine according to claim 2, characterized in that: A positioning platform (8) is provided at the middle position of the upper end of the conveying platform (7), a positioning plate (9) is fixedly provided at the upper end of the positioning platform (8), a positioning disc (42) is fixedly provided inside the positioning platform (8), a fixing frame (21) is fixedly provided at the upper end of both sides of the positioning platform (8) of the conveying platform (7), a limiting plate (41) is fixedly provided on the inner side of the fixing frame (21), a fixing seat (14) is fixedly provided at the upper end of the fixing frame (21) close to the transfer mechanism (10), and a limiting roller (15) is provided inside the fixing seat (14), and the conveying platform (7) is fixedly provided with a positioning plate (9) at the upper end of the positioning platform (8). ) A movable frame (24) is provided on both sides of the interior below the fixed frame (21), a swing rod (40) is provided at the lower end of the movable frame (24), and the swing rod (40) is rotatably connected to the movable frame (24), a mounting ear plate (39) is provided at the lower end of the swing rod (40), the lower end of the swing rod (40) is rotatably connected to the mounting ear plate (39), and the mounting ear plate (39) is fixedly connected to the fixed machine (1), and a first push rod (30) is provided at the upper end of the movable frame (24) close to the transfer mechanism (10), and the first push rod (30) is slidably connected to the movable frame (24).

4. The screen printing machine according to claim 3, characterized in that: The front and rear ends of the fixed machine (1) are fixedly provided with fixed plates (23), and the two sides between the fixed plates (23) are fixedly provided with mounting rods (27). Two rotating rods (28) are provided outside the mounting rods (27), and the rotating rods (28) are rotatably connected to the mounting rods (27), and the upper ends of the rotating rods (28) are in contact with the movable frame (24). The upper and lower ends of the mounting rods (27) are provided with rubber wheels (29), and the rubber wheels (29) are rotatably connected to the mounting rods (27). A cam (26) is provided at the middle position of the middle of the fixed plate (23), and the positions of the cam (26) and the rubber wheels (29) correspond.

5. The screen printing machine according to claim 4, characterized in that: A third motor (25) is fixedly provided at the lower end of the fixed plate (23), a third driving pulley (43) is fixedly provided on the outside of the output shaft of the third motor (25), a third transmission pulley (45) is provided on the rear end outside the fixed plate (23), and the third transmission pulley (45) is fixedly connected to the cam (26), and a third belt (44) is provided on the outside of the third transmission pulley (45) and the third driving pulley (43).

6. The screen printing machine according to claim 5, characterized in that: A placement box (11) is fixedly provided at the middle position of the upper end of the fixed machine (1), and feeding ports (46) are provided on both sides of the placement box (11), the feeding ports (46) are distributed front and back, and the feeding ports (46) correspond to the positions of the fixed frame (21), two conveying mechanisms (22) are provided at the front end below the interior of the placement box (11), and the conveying mechanisms (22) correspond to the positions of the feeding ports (46), a second motor (20) is provided on one side outside the conveying mechanism (22), and the output shaft of the second motor (20) is fixedly connected to the conveying mechanism (22).

7. The screen printing machine according to claim 6, characterized in that: The rear ends of both sides of the interior of the placement box (11) are provided with first driving pulleys (17), the front ends of both sides of the interior of the placement box (11) are provided with first transmission pulleys (19), and a first belt (18) is provided outside between the first driving pulley (17) and the first transmission pulley (19). The placement box (11) is fixedly provided with fixed rods (13) on both sides of the interior upper part near the center of the placement box (11), and two unloading mechanisms (12) are provided outside the fixed rods (13). The unloading mechanism (12) is slidably connected to the fixed rods (13), and both sides of the unloading mechanism (12) are fixedly connected to the first belt (18). A first motor (16) is fixedly provided on one side of the exterior of the placement box (11), and the output shaft of the first motor (16) extends to the interior of the placement box (11) and is fixedly connected to the first driving pulley (17).

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