An automatic cleaning pad printing device

Abstract

The utility model relates to printing device, specifically disclose a kind of automatic cleaning's pad printing device, including first guide rail, first slide is slidably arranged on first guide rail, the rotating shaft being connected with first slide, the rubber head being connected with rotating shaft, the driving device for driving rotating shaft rotation, second guide rail parallel to first guide rail, second slide is slidably arranged on second guide rail, the cover being connected with second slide and opening downward, the through-hole being opened in cover, the velvet being arranged at through-hole, and the traction device being connected with velvet;Length direction of cover is parallel to the length direction of first guide rail, cover is covered in rubber head upper side.The automatic cleaning's pad printing device of the utility model can efficiently clean pad printing rubber head, and will not affect pad printing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of printing apparatus, and more specifically, to an automatic cleaning pad printing apparatus. Background Technology

[0002] Pad printing, a widely used process for printing on curved and irregularly shaped workpieces, works by using a flexible pad to pick up ink from a pre-designed pattern and then precisely transfer it to the surface of the product. During continuous operation, ink buildup and impurities can gradually accumulate on the pad surface. If not cleaned promptly, this can easily lead to printing quality defects such as blurred patterns and incomplete edges. Therefore, regular cleaning of the pad is crucial for ensuring stable production.

[0003] Current mainstream pad printing pad cleaning devices generally adopt an "offline" design, meaning the pad printing head needs to be temporarily removed from the printing track and enter a dedicated cleaning mechanism for wiping, solvent cleaning, and other operations. This mode has significant efficiency bottlenecks: on the one hand, the cleaning process needs to be alternated with the printing process, requiring a pause in printing for each cleaning, leading to increased equipment idle time; on the other hand, to coordinate the rhythm of printing and cleaning, some production lines have to reduce the pad printing head movement speed, which, according to industry statistics, reduces overall production efficiency. Furthermore, to achieve process switching, the equipment needs to be equipped with complex guide rail switching mechanisms and program control modules, which not only increases equipment manufacturing costs but also increases the failure rate and maintenance difficulty. Therefore, a more efficient pad printing pad cleaning device can be designed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic cleaning pad printing device that can efficiently clean the pad printing head without affecting the pad printing efficiency.

[0005] This utility model is achieved through the following technical solution: The automatic cleaning pad printing device of this utility model includes a first guide rail, a first slide block slidably disposed on the first guide rail, a rotating shaft connected to the first slide block, a glue head connected to the rotating shaft, a driving device for driving the rotating shaft to rotate, a second guide rail parallel to the first guide rail, a second slide block slidably disposed on the second guide rail, a cover body connected to the second slide block and with its opening facing downward, a through hole opened in the cover body, a velvet cloth disposed at the through hole, and a traction device connected to the velvet cloth; the length direction of the cover body is parallel to the length direction of the first guide rail, and the cover body covers the glue head.

[0006] Furthermore, on a plane perpendicular to the length direction of the first guide rail, the projection of the cover is arc-shaped; the axis of the rotating shaft coincides with the center of the cover.

[0007] Furthermore, on a plane perpendicular to the length direction of the first guide rail, the projection of the rubber head away from the rotating shaft is arc-shaped; the axial direction of the rotating shaft coincides with the center of the arc-shaped surface of the rubber head.

[0008] Furthermore, each end of the rotating shaft is connected to a connecting rod, and the end of the connecting rod away from the rotating shaft is fixedly connected to the first slide block; each end of the rotating shaft is rotatably connected to a pair of the connecting rods.

[0009] Furthermore, the drive device includes a rotary motor fixedly connected to one of the connecting rods, a drive wheel located on the output shaft of the rotary motor, a driven wheel located at one end of the shaft, and a transmission belt for connecting the drive wheel and the driven wheel.

[0010] Furthermore, a fixing strip is provided on both sides of the through hole, and the fixing strip has an elongated fixing hole; the velvet cloth is simultaneously arranged through a pair of fixing holes; the length direction of the fixing hole is parallel to the length direction of the first guide rail.

[0011] Furthermore, an elongated water spray hole is provided on the side of the cover away from the second slide, a water spray pipe is provided at the water spray hole, multiple nozzles are provided on the side wall of the water spray pipe, and the water spray pipe is connected to a water supply device; the nozzles are arranged facing the water spray hole.

[0012] Furthermore, the first linear motor can drive the first slide to move on the first guide rail; the second linear motor can drive the second slide to move on the second guide rail.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: In the automatic cleaning pad printing device of this utility model, the first slide moves on the first guide rail during use. The ink source adheres the ink to the pad, and the first slide moves the pad to the substrate and prints the pattern on the substrate. After a certain number of printings, when the pad moves from the substrate to the ink source, the drive device drives the rotating shaft and the pad to rotate. During the rotation of the pad, the pad contacts the velvet cloth on the cover. At the same time, the traction device pulls the velvet cloth to move, so that the pad and the velvet cloth move relative to each other, thereby wiping the ink residue on the surface of the pad clean. During this process, the second slide drives the cover and the velvet cloth to move on the second guide rail, and the movement of the cover and the pad is synchronous. Therefore, when the pad moves to the ink source, the pad has just rotated one revolution (or an integer number of revolutions). At this time, the pad printing operation can continue, and then the cover returns to its original position. In this way, even during the cleaning process of the printing head, the reciprocating movement cycle of the printing head between the ink source and the substrate is fixed. Therefore, even if the printing head is cleaned periodically during the printing process, it will not affect the printing process. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of an automatic cleaning pad printing device provided in an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Another structural diagram from a different perspective;

[0016] Figure 3 A schematic diagram of the two states of the automatic cleaning pad printing device provided in an embodiment of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the cover portion provided in an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the rubber head portion provided in an embodiment of the present utility model.

[0019] Icons: 10-First guide rail, 11-First slide, 12-Rotating shaft, 13-Rubber head, 14-Drive device, 141-Rotary motor, 142-Driving wheel, 143-Driven wheel, 144-Transmission belt, 20-Second guide rail, 21-Second slide, 22-Cover, 23-Through hole, 24-Flannel, 25-Fixing strip, 26-Water spray hole, 27-Water spray pipe. Detailed Implementation

[0020] Example

[0021] The following description, in conjunction with specific embodiments, further illustrates the points, as shown in the appendix. Figure 1 -Appendix Figure 5 As shown, the automatic cleaning pad printing device of this embodiment includes a first guide rail 10, a first slide block 11 slidably disposed on the first guide rail 10, a rotating shaft 12 connected to the first slide block 11, a glue head 13 connected to the rotating shaft 12, a driving device 14 for driving the rotating shaft 12 to rotate, a second guide rail 20 parallel to the first guide rail 10, a second slide block 21 slidably disposed on the second guide rail 20, a cover 22 connected to the second slide block 21 and with its opening facing downward, a through hole 23 opened in the cover 22, a velvet cloth 24 disposed at the through hole 23, and a traction device connected to the velvet cloth 24; the length direction of the cover 22 is parallel to the length direction of the first guide rail 10, and the cover 22 covers the glue head 13. Specifically, during use, the first slide 11 moves on the first guide rail 10, the ink source adheres the ink to the printing head 13, the first slide 11 moves the printing head 13 to the substrate, and prints the pattern on the substrate. After a certain number of printing cycles, when the printing head 13 moves from the substrate to the ink source, the drive device 14 drives the rotating shaft 12 and the printing head 13 to rotate. During the rotation of the printing head 13, the printing head 13 contacts the velvet 24 (as shown in the attached image) at the cover 22. Figure 3As shown in the diagram, simultaneously, the traction device pulls the cloth 24, causing the printing head 13 and the cloth 24 to move relative to each other, thereby wiping away the residual ink on the surface of the printing head 13. During this process, the second slide 21 drives the cover 22 and the cloth 24 to move on the second guide rail 20, and the movement of the cover 22 and the printing head 13 is synchronous. Therefore, when the printing head 13 moves to the ink source, the printing head 13 has just rotated one revolution (or an integer number of revolutions). At this time, the pad printing operation can continue, and then the cover 22 returns to its original position. In this way, throughout the entire process, even during the cleaning process of the printing head 13, the reciprocating movement cycle of the printing head 13 between the ink source and the substrate is fixed. Therefore, even if the printing head 13 is periodically cleaned during the printing process, it will not affect the printing process. It should be noted that this embodiment only shows the ink head 13 and its cleaning mechanism, so the ink source and the printing substrate are not shown. However, the ink source and the printing substrate are usually located at opposite ends of the first guide rail 10, and the ink head 13 needs to move closer to / away from the ink source / printing substrate. This movement can be performed by the ink head 13 itself or by the ink source or the printing substrate. Conventional moving structures such as telescopic cylinders can be used, and this embodiment does not require such movement.

[0022] In this embodiment, the projection of the cover 22 on the plane perpendicular to the length direction of the first guide rail 10 is arc-shaped; the axis of the rotating shaft 12 coincides with the center of the cover 22. On the plane perpendicular to the length direction of the first guide rail 10, the projection of the side of the adhesive head 13 away from the rotating shaft 12 is arc-shaped; the axis of the rotating shaft 12 coincides with the center of the arc-shaped surface of the adhesive head 13. Specifically, when the adhesive head 13 rotates around the rotating shaft 12 into the cover 22, the adhesive head 13 can fit well with the velvet 24. This allows for better brushing and cleaning of the ink on the surface of the adhesive head 13. It should be noted that the two ends of the velvet 24 are respectively connected to a roll of velvet 24 or a roller. The rotation of the roller can wind up the velvet 24, thereby driving the velvet 24 to move and winding up the used velvet 24.

[0023] In this embodiment, both ends of the rotating shaft 12 are connected to connecting rods, and the end of the connecting rod away from the rotating shaft 12 is fixedly connected to the first slide block 11; both ends of the rotating shaft 12 are rotatably connected to a pair of connecting rods respectively. The driving device 14 includes a rotary motor 141 fixedly connected to one of the connecting rods, a driving wheel 142 located on the output shaft of the rotary motor 141, a driven wheel 143 located at one end of the rotating shaft 12, and a transmission belt 144 for connecting the driving wheel 142 and the driven wheel 143. Specifically, the rotary motor 141 drives the rotating shaft 12 to rotate through the driving wheel 142, the transmission belt 144, and the driven wheel 143, thereby driving the rubber head 13 to rotate around the rotating shaft 12. Alternatively, sprockets, chains, gears, or other methods can be used to drive the rotating shaft 12 to rotate.

[0024] In this embodiment, fixing strips 25 are provided on both sides of the through hole 23, and the fixing strips 25 have elongated fixing holes; the velvet 24 passes through a pair of fixing holes simultaneously; the length direction of the fixing holes is parallel to the length direction of the first guide rail 10. Specifically, the fixing strips 25 and fixing holes can limit the velvet 24, so that the velvet 24 can be better secured at the through hole 23 of the cover 22.

[0025] In this embodiment, the cover 22 has an elongated water spray hole 26 on the side away from the second slide 21. A water spray pipe 27 is provided at the water spray hole 26, and multiple nozzles are provided on the side wall of the water spray pipe 27. The water spray pipe 27 is connected to a water supply device; the nozzles are positioned facing the water spray hole 26. Specifically, before the rubber head 13 contacts the velour cloth 24, a certain amount of cleaning liquid is sprayed onto the surface of the rubber head 13 through the water supply device via the water spray pipe 27 and nozzles. Then, the surface of the rubber head 13 is wiped clean with the velour cloth 24, which can better remove residual ink from the surface of the rubber head 13.

[0026] In this embodiment, the first linear motor drives the first slide 11 to move on the first guide rail 10; the second linear motor drives the second slide 21 to move on the second guide rail 20. Specifically, the first linear motor effectively drives the first slide 11 to move on the first guide rail 10, and the second linear motor effectively drives the second slide 21 to move on the second guide rail 20. Besides the first and second linear motors, ball screws, rack and pinion mechanisms, etc., can also be used as the power drive.

[0027] In summary, in this embodiment of the automatic cleaning pad printing device, during use, the first slide 11 moves on the first guide rail 10, the ink source adheres the ink to the printing head 13, the first slide 11 moves the printing head 13 to the substrate, and the pattern is printed on the substrate. After a certain number of printing cycles, when the printing head 13 moves from the substrate to the ink source, the drive device 14 drives the rotating shaft 12 and the printing head 13 to rotate. During the rotation of the printing head 13, the printing head 13 contacts the velvet 24 on the cover 22. Simultaneously, the traction device pulls the cloth 24, causing relative movement between the printing head 13 and the cloth 24, thereby wiping away any residual ink on the surface of the printing head 13. During this process, the second slide 21 drives the cover 22 and the cloth 24 to move on the second guide rail 20, and the movement of the cover 22 and the printing head 13 is synchronous. Therefore, when the printing head 13 moves to the ink source, it has just rotated one revolution (or an integer number of revolutions), at which point the pad printing operation can continue, and then the cover 22 returns to its original position. In this way, throughout the entire process, even during the cleaning process of the printing head 13, the reciprocating movement cycle of the printing head 13 between the ink source and the substrate is fixed. Therefore, even if the printing head 13 is periodically cleaned during the printing process, it will not affect the printing process.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic cleaning pad printing device, characterized in that: Includes a first guide rail (10), a first slide block (11) slidably disposed on the first guide rail (10), a rotating shaft (12) connected to the first slide block (11), a rubber head (13) connected to the rotating shaft (12), a driving device (14) for driving the rotating shaft (12) to rotate, a second guide rail (20) parallel to the first guide rail (10), a second slide block (21) slidably disposed on the second guide rail (20), a cover (22) connected to the second slide block (21) and with its opening facing downward, a through hole (23) opened in the cover (22), a velvet cloth (24) disposed in the through hole (23), and a traction device connected to the velvet cloth (24); The length direction of the cover (22) is parallel to the length direction of the first guide rail (10), and the cover (22) is placed above the rubber head (13).

2. The automatic cleaning pad printing device according to claim 1, characterized in that: On a plane perpendicular to the length direction of the first guide rail (10), the projection of the cover (22) is arc-shaped; The axis of the rotating shaft (12) coincides with the center of the cover (22).

3. The automatic cleaning pad printing device according to claim 2, characterized in that: On a plane perpendicular to the length direction of the first guide rail (10), the projection of the rubber head (13) away from the rotating shaft (12) is arc-shaped; The axial direction of the rotating shaft (12) coincides with the center of the arc surface of the rubber head (13).

4. The automatic cleaning pad printing device according to claim 3, characterized in that: Both ends of the rotating shaft (12) are connected to connecting rods, and the end of the connecting rod away from the rotating shaft (12) is fixedly connected to the first slide (11); The two ends of the rotating shaft (12) are respectively rotatably connected to a pair of connecting rods.

5. The automatic cleaning pad printing device according to claim 4, characterized in that: The drive device (14) includes a rotary motor (141) fixedly connected to one of the connecting rods, a drive wheel (142) located on the output shaft of the rotary motor (141), a driven wheel (143) located at one end of the rotating shaft (12), and a transmission belt (144) for connecting the drive wheel (142) and the driven wheel (143).

6. The automatic cleaning pad printing device according to claim 1, characterized in that: The through hole (23) is provided with fixing strips (25) on both sides, and the fixing strips (25) have elongated fixing holes; the velvet (24) is provided to pass through a pair of fixing holes at the same time; The length direction of the fixing hole is parallel to the length direction of the first guide rail (10).

7. The automatic cleaning pad printing device according to claim 1, characterized in that: The cover (22) has a long strip-shaped water spray hole (26) on the side away from the second slide (21). A water spray pipe (27) is provided at the water spray hole (26). Multiple nozzles are provided on the side wall of the water spray pipe (27). The water spray pipe (27) is connected to a water supply device. The nozzle is positioned toward the water spray hole (26).

8. The automatic cleaning pad printing device according to claim 1, characterized in that: The first linear motor can drive the first slide (11) to move on the first guide rail (10); The second linear motor can drive the second slide (21) to move on the second guide rail (20).

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