A screen printing device for a circular cylinder

Abstract

The application relates to a circular cylinder screen printing processing technology field, in particular to a screen printing device for a circular cylinder, which comprises a rack, the rack is provided with a dividing disc, a screen printing machine is arranged above the dividing disc, a plurality of rollers are uniformly distributed on the dividing disc, and the rollers are arranged perpendicularly to the dividing disc; a plurality of positioning holes are formed in the dividing disc, the rack is provided with a cross-shaped clamping seat, the cross-shaped clamping seat is provided with a sliding groove, the sliding groove is provided with a clamping assembly, and the clamping assembly is provided with a boss assembly coaxial with the positioning holes; the cross-shaped clamping seat is provided with a driving rod, the driving rod is provided with two connecting rods, the other ends of the connecting rods are connected with the clamping assembly, and a motor A is arranged to drive the driving rod to rotate; the first clamping plate, the second clamping plate, the first circular table and the second circular table are driven to move towards each other and are matched with the positioning holes of the dividing disc; dynamic locking of the dividing disc is realized at the moment when the screen printing machine is pressed, displacement of the dividing disc in the printing process is effectively eliminated, color deviation is avoided, and the printing quality of products is ensured.

Description

Technical Field

[0001] This application relates to the field of screen printing processing technology for cylindrical columns, and in particular to a screen printing apparatus for cylindrical columns. Background Technology

[0002] Screen printing is a printing technique that transfers ink onto a substrate using a screen printing plate; it is a type of stencil printing. Its core principle is to utilize the permeability of the screen's mesh, using a squeegee to force ink through the mesh, creating a pattern on the substrate surface.

[0003] Chinese utility model patent application No. 201520387984.3—a printing apparatus—comprises a frame, an indexing plate, a feeding assembly, a screen printing machine, and a dryer. The indexing plate is rotatably mounted on the frame and is vertically arranged. One or more positioning components are provided on the indexing plate, evenly distributed along its circumference. Each positioning component includes a motor, a first cylinder, a push plate, and a cylindrical column. The cylindrical column is rotatably mounted on the indexing plate, and the motor drives the cylindrical column to rotate. The push plate is mounted on the cylindrical column perpendicular to the indexing plate. The first cylinder drives the push plate to move axially along the cylindrical column. The feeding assembly includes a feeding rail and a second cylinder. The discharge end of the feeding rail corresponds to one of the cylindrical columns on the indexing plate. The piston rod of the second cylinder is set corresponding to the discharge end of the feeding rail and drives the substrate on the discharge end to be sleeved onto the cylindrical column. The screen printing machine is located above the indexing plate, and the dryer is located below the screen printing machine. The rotation trajectory of the dryer is set towards the positioning assembly.

[0004] When the aforementioned patent and existing screen printing technologies screen print patterns on cylindrical products, the indexing plate is easily affected by the movement of the screen printing plate in the screen printing machine when the indexing plate rotates the product to the highest point and stops, waiting for the product surface to be printed. This causes the indexing plate to rotate slightly, and the rotation of the indexing plate directly affects the printing effect of the product pattern, seriously affecting the product throughput. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a screen printing device for cylinders. The technical problem it solves is that the movement of the screen printing plate during the printing process causes the indexing plate to rotate, resulting in poor printing quality and severely affecting product throughput. The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A screen printing apparatus for a cylindrical column, comprising:

[0007] frame;

[0008] The indexing plate is connected to the frame by a rotating structure and is located on one side of the frame.

[0009] The screen printing machine is located above the indexing plate and is connected to the frame.

[0010] A number of rollers are evenly distributed circumferentially along the outer end face of the indexing plate in a rotating structure, and the rollers are set perpendicular to the indexing plate;

[0011] Positioning holes are evenly distributed circumferentially on the inner and outer end faces of the indexing plate, and the positioning holes are located between the two rollers.

[0012] The cross-shaped mounting bracket is connected to the frame in a fixed structure, and the cross-shaped mounting bracket has a sliding groove.

[0013] The clamping assembly is connected to the slide groove of the cross-shaped card holder by a sliding structure, and the clamping assembly is fixedly provided with a boss assembly that is coaxially engaged with the positioning hole.

[0014] The active lever is connected to the cross-shaped retaining block via a rotating mechanism.

[0015] The connecting rods have one end mounted on the upper end face of both ends of the active rod in a rotating manner, and the other end of the connecting rods is connected to the clamping assembly in a rotating manner.

[0016] Motor A drives the rotation of the drive rod, and the motor is connected to the cross-shaped bracket in a fixed structure.

[0017] Furthermore, the frame is equipped with a motor B in a fixed structure, the output end of the motor B is equipped with a coupling in a fixed structure, the coupling is equipped with a spline shaft in a fixed structure, the spline shaft is fitted with a gear A, the inner hole of the gear A is provided with a spline groove that slides with the spline shaft; one side of the gear A is equipped with a sliding sleeve in a fixed structure, the other end of the sliding sleeve is equipped with a shift fork structure, one side of the shift fork structure is fixedly equipped with a drive cylinder, and the cylinder body of the drive cylinder is fixedly connected to the frame.

[0018] Furthermore, several rotating shafts are evenly arranged along the circumference of the inner end face of the indexing plate in a rotating structure. The output end of the rotating shaft is fixedly connected to the drum, and the rotating shaft and the drum are coaxially arranged.

[0019] Furthermore, the rotating shaft is fitted with gear B.

[0020] Furthermore, the frame is equipped with a connecting plate in a fixed structure. The connecting plate is located below the screen printing machine and is connected to the cross-shaped bracket in a fixed structure.

[0021] Furthermore, the clamping assembly includes a first clamping plate and a second clamping plate, both of which are connected to the slide groove in a sliding structure, and the first clamping plate and the second clamping plate are arranged symmetrically facing each other.

[0022] The boss assembly further includes a first truncated cone and a second truncated cone. The first truncated cone is fixedly disposed on the inner end face of the first clamping plate, and the second truncated cone is fixedly disposed on the inner end face of the second clamping plate. The first truncated cone and the second truncated cone are coaxially arranged.

[0023] Furthermore, a motor C for driving the indexing plate to rotate is provided in the middle of the frame, and the output end of the motor C is connected to the indexing plate in a fixed structure.

[0024] The beneficial effects of this utility model are as follows: by setting symmetrical first and second clamping plates in the clamping assembly and symmetrical first and second frustums in the boss assembly, the first clamping plate, second clamping plate, first frustum, and second frustum can move towards each other under drive and cooperate with the positioning hole of the indexing plate; the indexing plate is dynamically locked at the moment of pressing down of the screen printing machine, effectively eliminating the displacement of the indexing plate during the printing process, further positioning and clamping the indexing plate to prevent color registration deviation and ensure the quality of product printing. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a top view schematic diagram of the structure of this utility model.

[0027] Figure 3 This is a partial structural schematic diagram of this utility model.

[0028] In the picture:

[0029] 1. Frame, 2. Indexing plate, 3. Screen printing machine, 4. Roller, 5. Positioning hole, 6. Cross bracket, 7. Slide groove, 8. Clamping assembly, 81. First clamping plate, 82. Second clamping plate, 9. Boss assembly, 91. First frustum, 92. Second frustum, 10. Driving rod, 11. Connecting rod, 12. Motor A, 13. Motor B, 14. Coupling, 15. Splined shaft, 16. Gear A, 17. Sliding sleeve, 18. Shift fork structure, 19. Drive cylinder, 20. Rotating shaft, 21. Gear B, 22. Connecting plate, 23. Motor C, 24. Product. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0031] A screen printing device for a cylindrical column includes a frame 1. The frame 1 has a rotating indexing plate 2 located on one side. A screen printing machine 3 is mounted above the indexing plate 2 and connected to the frame 1. A plurality of rollers 4 are evenly distributed circumferentially on the outer end face of the indexing plate 2, and the rollers 4 are perpendicular to the indexing plate 2. Positioning holes 5 are evenly distributed circumferentially on the inner and outer end faces of the indexing plate 2, located between two rollers 4. A cross-shaped retainer 6 is fixedly mounted on the frame 1. The cross-shaped retainer 6 has a sliding groove 7, and a clamping assembly 8 is slidably mounted on the sliding groove 7. The clamping assembly 8 has a boss assembly 9 that coaxially mates with the positioning holes 5. A drive rod 10 is rotatingly mounted on the cross-shaped retainer 6. The upper end face of the drive rod 10... Two connecting rods 11 are arranged in a rotating structure. The other end of the connecting rods 11 is connected to the clamping assembly 8 in a rotating structure. The motor A12 drives the active rod 10 to rotate. The motor A12 is connected to the cross-shaped bracket 6 in a fixed structure. By setting symmetrical first clamping plates 81 and second clamping plates 82 in the clamping assembly 8 and symmetrical first frustum 91 and second frustum 92 in the boss assembly 9, the first clamping plates 81, second clamping plates 82, first frustum 91 and second frustum 92 can move towards each other under the drive and cooperate with the positioning hole 5 of the indexing plate 2. The indexing plate 2 is dynamically locked when the screen printing machine 3 presses down, which effectively eliminates the displacement of the indexing plate 2 during the printing process, further positions and tightens the indexing plate 2, avoids color registration deviation, and ensures the quality of product printing.

[0032] It should be noted that the frame 1 has a fixed motor B13, and the output end of the motor B13 has a fixed coupling 14. The coupling 14 has a fixed spline shaft 15, and the spline shaft 15 is fitted with a gear A16. The inner hole of the gear A16 has a spline groove that slides with the spline shaft 15. One side of the gear A16 has a fixed sliding sleeve 17, and the other end of the sliding sleeve 17 has a shift fork structure 18. One side of the shift fork structure 18 has a fixed drive cylinder 19, and the cylinder body of the drive cylinder 19 is fixedly connected to the frame 1. The inner end face of the indexing plate 2 has several rotating shafts 20 evenly arranged in a rotating manner along its circumference. The output end of shaft 20 is fixedly connected to roller 4. Shaft 20 and roller 4 are coaxially arranged, and gear B21 is sleeved on shaft 20. This structure is mainly used to drive the rotation of roller 4 so that its linear speed is consistent with the linear speed of screen printing machine 3. Drive cylinder 19 drives gear A16 to move axially along spline shaft 15 to a designated position through sliding sleeve 17 and shift fork structure 18, so that gear A16 meshes with gear B21. When motor B13 is started, power is output to gear A16 through spline shaft 15. Gear A16 then transmits power to gear B21. The rotation of gear B21 will drive shaft 20, and shaft 20 will then transmit power to roller 4, so that roller 4 rotates.

[0033] It should be noted that the frame 1 is provided with a connecting plate 22 in a fixed structure. The connecting plate 22 is located below the screen printing machine 3 and is connected to the cross bracket 6 in a fixed structure. The main function of the connecting plate 22 is to provide support.

[0034] It should be noted that the clamping assembly 8 includes a first clamping plate 81 and a second clamping plate 82. Both the first clamping plate 81 and the second clamping plate 82 are connected to the slide groove 7 by a sliding structure. The first clamping plate 81 and the second clamping plate 82 are symmetrically arranged facing each other. The boss assembly 9 includes a first frustum 91 and a second frustum 92. The first frustum 91 is fixedly arranged on the inner end face of the first clamping plate 81, and the second frustum 92 is fixedly arranged on the inner end face of the second clamping plate 82. The first frustum 91 and the second frustum 92 are coaxially arranged. This structure can achieve precise positioning and clamping of the indexing plate 2, effectively eliminate the displacement of the indexing plate 2 during the printing process, further position and clamp the indexing plate 2 to avoid color registration deviation, and ensure the quality of product printing.

[0035] It should be noted that a motor C23 for driving the indexing plate 2 to rotate is provided in the middle of the frame 1. The output end of the motor C23 is connected to the indexing plate 2 in a fixed manner; the main purpose of this structure is to provide power to the indexing plate 2.

[0036] It should be noted that when the first clamping plate 81 and the second clamping plate 82 move toward each other, the closest distance between the first frustum 91 and the second frustum 91 is less than the thickness of the indexing plate 2.

[0037] The working principle and process of this utility model are as follows:

[0038] Start motor C23, and the indexing plate 2 begins to rotate. When the roller 4 reaches its highest point and is directly below the screen printing plate of the screen printing machine 3, turn off motor C23, and the indexing plate 2 stops rotating. Start motor A12, and motor A12 drives the drive rod 10 to rotate around the center point. The drive rod 10, through the connecting rod 11, applies a pulling force to the first clamping plate 81 and the second clamping plate 82, causing the first clamping plate 81 and the second clamping plate 82 to begin moving towards each other. The first truncated cone 91 and the second truncated cone 92 move towards each other together with the first clamping plate 81 and the second clamping plate 82 within the slide groove 7. When the first truncated cone 81... Both the second and second truncated cones 82 are tightly fitted with the positioning holes 5, clamping the indexing plate 2. The indexing plate 2 is now in a completely fixed state. The motor A12 is then stopped. The motor B12 and the screen printing machine 3 are then started, driving the roller 4 to rotate, which in turn drives the product 24 to rotate, and the pattern is printed on the product 24. After one printing is completed, the motor A12 is started again, driving the drive rod 10 to rotate in the opposite direction around the center point, which in turn drives the first clamping plate 81 and the second clamping plate 82 to move in opposite directions in the slide groove 7. The first and second truncated cones 91 and 92 disengage from the positioning holes 5, thus completing one printing operation.

[0039] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A screen printing device for a circular cylindrical column, characterized in that, include: Rack (1); Indexing plate (2), the indexing plate (2) is connected to the frame (1) by a rotating structure, and the indexing plate (2) is located on one side of the frame (1); The screen printing machine (3) is located above the indexing plate (2) and is connected to the frame (1); Roller (4), several rollers (4) are evenly distributed circumferentially along the outer end face of the indexing plate (2) in a rotating structure manner, and the rollers (4) are set perpendicular to the indexing plate (2); Positioning holes (5) are evenly opened on the inner and outer end faces of the indexing plate (2) along the circumference, and the positioning holes (5) are located between the two rollers (4). A cross-shaped bracket (6) is connected to the frame (1) in a fixed structure. The cross-shaped bracket (6) has a sliding groove (7). The clamping assembly (8) is connected to the slide groove (7) of the cross-shaped card holder (6) in a sliding structure. The clamping assembly (8) is fixedly provided with a boss assembly (9) that is coaxially engaged with the positioning hole (5). The active rod (10) is connected to the cross-shaped bracket (6) by a rotating structure; The two connecting rods (11) are respectively mounted on the upper end face of the two ends of the active rod (10) in a rotating structure. The other end of the connecting rods (11) is connected to the clamping assembly (8) in a rotating structure. Motor A (12) drives the active rod (10) to rotate. Motor A (12) is connected to the cross bracket (6) in a fixed structure.

2. The screen printing device for a circular cylindrical column according to claim 1, characterized in that: The frame (1) is equipped with a motor B (13) in a fixed structure. The output end of the motor B (13) is equipped with a coupling (14) in a fixed structure. The coupling (14) is equipped with a spline shaft (15) in a fixed structure. The spline shaft (15) is fitted with a gear A (16). The inner hole of the gear A (16) is provided with a spline groove that slides with the spline shaft (15). A sliding sleeve (17) is fixedly provided on one side of gear A (16), and a shift fork structure (18) is provided on the other end of the sliding sleeve (17). A drive cylinder (19) is fixedly provided on one side of the shift fork structure (18), and the cylinder body of the drive cylinder (19) is fixedly connected to the frame (1).

3. The screen printing apparatus for a circular cylindrical column according to claim 1, characterized in that: The inner end face of the indexing plate (2) is uniformly provided with several rotating shafts (20) in a rotating structure along its circumference. The output end of the rotating shaft (20) is fixedly connected to the drum (4), and the rotating shaft (20) and the drum (4) are coaxially arranged.

4. The screen printing device for a circular cylindrical column according to claim 3, characterized in that: The shaft (20) is fitted with gear B (21).

5. The screen printing apparatus for a circular cylindrical column according to claim 1, characterized in that: The frame (1) is provided with a connecting plate (22) in a fixed structure. The connecting plate (22) is located below the screen printing machine (3) and is connected to the cross bracket (6) in a fixed structure.

6. The screen printing apparatus for a circular cylindrical column according to claim 1, characterized in that: The clamping assembly (8) includes a first clamping plate (81) and a second clamping plate (82). Both the first clamping plate (81) and the second clamping plate (82) are connected to the slide groove (7) in a sliding structure. The first clamping plate (81) and the second clamping plate (82) are symmetrically arranged facing each other.

7. The screen printing apparatus for a circular cylindrical column according to claim 6, characterized in that: The boss assembly (9) includes a first truncated cone (91) and a second truncated cone (92). The first truncated cone (91) is fixedly disposed on the inner end face of the first clamping plate (81), and the second truncated cone (92) is fixedly disposed on the inner end face of the second clamping plate (82). The first truncated cone (91) and the second truncated cone (92) are coaxially disposed.

8. The screen printing apparatus for a circular cylindrical column according to claim 1, characterized in that: The frame (1) is equipped with a motor C (23) in the middle for driving the indexing plate (2) to rotate. The output end of the motor C (23) is connected to the indexing plate (2) in a fixed structure.

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