Non-woven fabric wiping mechanism of silk screen plate for PCB (printed circuit board)

Abstract

The utility model relates to the technical field of cleaning of screen printing plates for PCBs, in particular to a non-woven fabric wiping mechanism of a screen printing plate for a PCB. A vertical frame, a driving transmission mechanism fixedly connected with the vertical frame, a material roll pressing roller assembly fixedly connected with the vertical frame, a non-woven fabric unwinding roller, a first guide roller, a length measuring roller, a second guide roller, a lifting wiping assembly and a non-woven fabric winding roller are adopted. When the non-woven fabric wiping mechanism is used for wiping a silk screen plate, the lifting wiping assembly presses the non-woven fabric downwards so that the non-woven fabric can make contact with the silk screen plate, and then the length counting roller and the non-woven fabric winding roller rotate under the action of the driving transmission mechanism; the non-woven fabric is driven to be conveyed along the non-woven fabric unwinding roller, the first guide roller, the length measuring roller, the second guide roller, the lifting wiping assembly and the non-woven fabric winding roller in sequence, so that the mechanical operation of wiping the screen printing plate through the non-woven fabric is achieved, labor is saved, and efficiency is improved. In addition, the material roll compression roller assembly compresses the non-woven fabric of the length measuring roller so that the non-woven fabric can be kept stable in the conveying process.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning screen printing plates for PCB boards, in particular to a non-woven fabric wiping mechanism for screen printing plates for PCB boards. Background Art

[0002] PCB printing, also known as circuit board printing, is a burgeoning new industry. The rapid development of screen printing has invigorated this sector, bringing significant changes to the electronics industry. Current screen printing processes are fully capable of adapting to high-density PCB production. The screen is the most critical component in screen printing, crucial for controlling ink flow and print thickness, and also determining screen durability. Furthermore, excellent bonding between the screen and the photosensitive material is crucial for producing high-quality, high-precision screens. To ensure a perfect bond between the screen and the photosensitive material, new screens are traditionally roughened and degreased to ensure quality and extend their lifespan.

[0003] After using a screen printing stencil for a PCB board, the ink on the screen surface must be removed so that it can be used again for printing. Existing methods for removing screen ink often involve manually wiping the screen with multiple sheets of non-woven fabric, which is labor-intensive and inefficient. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a non-woven fabric wiping mechanism for a silk screen printing screen for a PCB board.

[0005] The purpose of the utility model is achieved through the following technical solutions: a non-woven fabric wiping mechanism for a silk-screen screen for a PCB board, comprising a stand, a driving transmission mechanism fixedly connected to the stand, a material roll pressing roller assembly fixedly connected to the stand, and a non-woven fabric unwinding roller, a first guide roller, a length measuring roller, a second guide roller, a lifting and wiping assembly and a non-woven fabric winding roller arranged in sequence along the conveying direction of the non-woven fabric, the non-woven fabric unwinding roller, the first guide roller, the length measuring roller, the second guide roller and the non-woven fabric winding roller are all rotatably connected to one side of the stand, the driving transmission mechanism is transmission-connected to the first guide roller and is used to drive the length measuring roller to rotate and drive the non-woven fabric winding roller to rotate, the material roll pressing roller assembly is used to press the non-woven fabric of the length measuring roller, and the lifting and wiping assembly is fixedly connected to the stand and is used to press down the non-woven fabric.

[0006] Preferably, the non-woven fabric wiping mechanism further comprises a T-side robot quick-change plate fixedly connected to the other side of the stand, and the T-side robot quick-change plate is used to be fixedly connected to the output end of the multi-axis robot.

[0007] Preferably, a first annular transmission groove is provided on the side of the length measuring roller close to the stand, and a second annular transmission groove is provided on the side of the non-woven fabric winding roller close to the stand. The drive transmission mechanism includes a motor frame connected to the other side of the stand, a drive motor fixedly connected to the motor frame, and a transmission belt sleeved between the first annular transmission groove and the second annular transmission groove. The output end of the drive motor is connected to the length measuring roller, and the transmission belt is used for transmission between the length measuring roller and the non-woven fabric winding roller.

[0008] Preferably, the material roll pressing roller assembly includes a cylinder seat fixedly connected to one side of the vertical frame, a first cylinder fixedly connected to the cylinder seat, a first roller frame connected to the output end of the first cylinder, and a pressing roller rotatably connected to the first roller frame and arranged adjacent to the length measuring roller. The pressing roller cooperates with the length measuring roller to press the non-woven fabric.

[0009] Preferably, the lifting and wiping assembly includes a second cylinder fixedly connected to the other side of the vertical frame, a support plate fixedly connected to the output end of the second cylinder, a second roller frame fixedly connected to the bottom of the support plate, and a third guide roller rotatably connected to the side of the second roller frame away from the second guide roller. The second guide roller, the second roller frame, the third guide roller and the non-woven fabric winding roller are arranged in sequence along the conveying direction of the non-woven fabric.

[0010] Preferably, the lifting and wiping assembly also includes a clamping plate connected to the side of the second roller frame close to the second guide roller, and a spray plate clamped between the clamping plate and the second roller frame, the bottom of the spray plate is provided with a plurality of spray holes that are spaced apart and interconnected, the side wall of the spray plate is connected to a liquid inlet interface connected to the spray holes, and the bottom surface of the spray plate is a wiping plane.

[0011] Preferably, the non-woven fabric wiping mechanism further comprises a liquid spray gun fixedly connected to the other side of the stand, and the liquid spray gun is used to spray liquid onto the silk screen screen.

[0012] The beneficial effects of the utility model are as follows: the non-woven fabric wiping mechanism for the silk screen printing screen of the PCB board of the utility model adopts a stand, a driving transmission mechanism fixedly connected to the stand, a material roll pressing roller assembly fixedly connected to the stand, and a non-woven fabric unwinding roller, a first guide roller, a length measuring roller, a second guide roller, a lifting and wiping assembly and a non-woven fabric winding roller arranged in sequence along the conveying direction of the non-woven fabric; when the non-woven fabric wiping mechanism is used to wipe the silk screen printing screen, the lifting and wiping assembly presses down the non-woven fabric so that the non-woven fabric contacts the silk screen printing screen, and then, under the action of the driving transmission mechanism, the length measuring roller and the non-woven fabric winding roller rotate, driving the non-woven fabric to be conveyed in sequence along the non-woven fabric unwinding roller, the first guide roller, the length measuring roller, the second guide roller, the lifting and wiping assembly and the non-woven fabric winding roller, thereby realizing the mechanized operation of wiping the silk screen printing screen with the non-woven fabric, saving labor and being conducive to improving efficiency; in addition, the material roll pressing roller assembly presses the non-woven fabric of the length measuring roller so that the non-woven fabric conveying process remains stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the utility model with non-woven fabric;

[0014] Figure 2 It is a structural diagram of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the utility model from another perspective;

[0016] The accompanying drawings are marked as follows: 1. Stand; 2. Non-woven fabric unwinding roller; 3. First guide roller; 4. Length measuring roller; 5. Second guide roller; 6. Lifting and wiping assembly; 61. Second cylinder; 62. Support plate; 63. Second roller frame; 64. Third guide roller; 65. Clamp; 66. Spray plate; 7. Non-woven fabric winding roller; 8. Driving transmission mechanism; 81. Motor frame; 82. Driving motor; 83. Transmission belt; 9. Material roll pressing roller assembly; 91. Cylinder seat; 92. First cylinder; 93. First roller frame; 94. Pressing roller; 10. T-side robot quick-change disc; 11. First annular transmission groove; 12. Second annular transmission groove; 13. Spray hole; 14. Liquid inlet interface; 15. Spray gun. DETAILED DESCRIPTION

[0017] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0018] like Figure 1-3As shown, a non-woven fabric wiping mechanism for a silk-screen screen for a PCB board comprises a stand 1, a driving transmission mechanism 8 fixedly connected to the stand 1, a material roll pressing roller assembly 9 fixedly connected to the stand 1, and a non-woven fabric unwinding roller 2, a first guide roller 3, a length measuring roller 4, a second guide roller 5, a lifting and wiping assembly 6 and a non-woven fabric winding roller 7 arranged in sequence along the conveying direction of the non-woven fabric. The non-woven fabric unwinding roller 2, the first guide roller 3, the length measuring roller 4, the second guide roller 5 and the non-woven fabric winding roller 7 are all rotatably connected to one side of the stand 1, the driving transmission mechanism 8 is transmission-connected to the first guide roller 3 and is used to drive the length measuring roller 4 to rotate and drive the non-woven fabric winding roller 7 to rotate, the material roll pressing roller assembly 9 is used to press the non-woven fabric on the length measuring roller 4, and the lifting and wiping assembly 6 is fixedly connected to the stand 1 and is used to press down the non-woven fabric.

[0019] The non-woven fabric wiping mechanism for the screen printing screen of the PCB board adopts a stand 1, a driving transmission mechanism 8 fixedly connected to the stand 1, a material roll pressing roller assembly 9 fixedly connected to the stand 1, and a non-woven fabric unwinding roller 2, a first guide roller 3, a length measuring roller 4, a second guide roller 5, a lifting wiping assembly 6 and a non-woven fabric winding roller 7 arranged in sequence along the conveying direction of the non-woven fabric; when the non-woven fabric wiping mechanism is used to wipe the screen printing screen, the lifting wiping assembly 6 presses the non-woven fabric downward so that the non-woven fabric and the screen printing screen are in contact. The printing screen is in contact, and then under the action of the driving transmission mechanism 8, the length measuring roller 4 and the non-woven fabric winding roller 7 are rotated, driving the non-woven fabric to be transported in sequence along the non-woven fabric unwinding roller 2, the first guide roller 3, the length measuring roller 4, the second guide roller 5, the lifting wiping assembly 6 and the non-woven fabric winding roller 7, thereby realizing the mechanized operation of wiping the screen printing screen with the non-woven fabric, saving labor and helping to improve efficiency; in addition, the material roll pressing roller assembly 9 presses the non-woven fabric on the length measuring roller 4 so that the non-woven fabric conveying process remains stable.

[0020] Furthermore, the non-woven fabric wiping mechanism also includes a T-side robot quick-change plate 10 fixedly connected to the other side of the stand 1. The T-side robot quick-change plate 10 is used to be fixedly connected to the output end of the multi-axis robot, which is conducive to using the existing multi-axis robot to drive the non-woven fabric wiping mechanism to move, so as to wipe the silk screen more comprehensively.

[0021] Furthermore, a first annular transmission groove 11 is provided on the side of the length measuring roller 4 close to the stand 1, and a second annular transmission groove 12 is provided on the side of the non-woven fabric winding roller 7 close to the stand 1. The drive transmission mechanism 8 includes a motor frame 81 connected to the other side of the stand 1, a drive motor 82 fixedly connected to the motor frame 81, and a transmission belt 83 arranged between the first annular transmission groove 11 and the second annular transmission groove 12. The output end of the drive motor 82 is connected to the length measuring roller 4 for transmission, and the transmission belt 83 is used for transmission between the length measuring roller 4 and the non-woven fabric winding roller 7.

[0022] Furthermore, the web pressing roller assembly 9 includes a cylinder base 91 fixedly connected to one side of the stand 1, a first cylinder 92 fixedly connected to the cylinder base 91, a first roller frame 93 connected to the output end of the first cylinder 92, and a pressing roller 94 rotatably connected to the first roller frame 93 and disposed adjacent to the length-counting roller 4. The pressing roller 94 cooperates with the length-counting roller 4 to compress the nonwoven fabric. During use, the first cylinder 92 drives the first roller frame 93, driving the pressing roller 94 to press against the length-counting roller 4, thereby maintaining a stable conveyance of the nonwoven fabric between the pressing roller 94 and the length-counting roller 4.

[0023] Furthermore, the lifting and wiping assembly 6 includes a second cylinder 61 fixedly connected to the other side of the vertical frame 1, a support plate 62 fixedly connected to the output end of the second cylinder 61, a second roller frame 63 fixedly connected to the bottom of the support plate 62, and a third guide roller 64 rotatably connected to the side of the second roller frame 63 away from the second guide roller 5. The second guide roller 5, the second roller frame 63, the third guide roller 64 and the non-woven fabric winding roller 7 are arranged in sequence along the conveying direction of the non-woven fabric.

[0024] Furthermore, the lifting and wiping assembly 6 also includes a clamping plate 65 connected to the side of the second roller frame 63 near the second guide roller 5, and a spray plate 66 sandwiched between the clamping plate 65 and the second roller frame 63. The bottom of the spray plate 66 is provided with a plurality of spray holes 13 spaced apart and interconnected. The side wall of the spray plate 66 is connected to a liquid inlet interface 14 connected to the spray holes 13. The bottom surface of the spray plate 66 is a wiping surface. In order to wipe the silk screen ink clean, the non-woven fabric usually needs to be soaked in a liquid such as alcohol for auxiliary purposes. In this embodiment, alcohol can be introduced into the non-woven fabric through the spray holes 13 of the spray plate 66 through the spray holes 13. The bottom surface of the spray plate 66 is a wiping surface, which also helps to improve the wiping effect.

[0025] Furthermore, the non-woven fabric wiping mechanism also includes a spray gun 15 fixedly connected to the other side of the stand 1, and the spray gun 15 is used to spray liquid onto the silk screen. For stubborn ink on the silk screen, the spray gun 15 can be used to spray alcohol lamp liquid onto the silk screen in advance, which is beneficial to improve the wiping effect.

[0026] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the scope of protection of the present invention.

Claims

1. A non-woven fabric wiping mechanism for a screen printing screen for a PCB board, characterized by: It includes a stand, a driving transmission mechanism fixedly connected to the stand, a material roll pressing roller assembly fixedly connected to the stand, and a non-woven fabric unwinding roller, a first guide roller, a length measuring roller, a second guide roller, a lifting and wiping assembly and a non-woven fabric winding roller arranged in sequence along the conveying direction of the non-woven fabric. The non-woven fabric unwinding roller, the first guide roller, the length measuring roller, the second guide roller and the non-woven fabric winding roller are all rotatably connected to one side of the stand, the driving transmission mechanism is connected to the first guide roller for driving the length measuring roller to rotate and drive the non-woven fabric winding roller to rotate, the material roll pressing roller assembly is used to press the non-woven fabric on the length measuring roller, and the lifting and wiping assembly is fixedly connected to the stand and for pressing down the non-woven fabric.

2. The non-woven fabric wiping mechanism for a screen printing screen for a PCB according to claim 1, characterized in that: The non-woven fabric wiping mechanism also includes a T-side robot quick-change plate fixedly connected to the other side of the stand, and the T-side robot quick-change plate is used to be fixedly connected to the output end of the multi-axis robot.

3. The non-woven fabric wiping mechanism for a screen printing stencil for a PCB board according to claim 1, characterized in that: A first annular transmission groove is provided on the side of the length measuring roller close to the stand, and a second annular transmission groove is provided on the side of the non-woven fabric winding roller close to the stand. The driving transmission mechanism includes a motor frame connected to the other side of the stand, a driving motor fixedly connected to the motor frame, and a transmission belt sleeved between the first annular transmission groove and the second annular transmission groove. The output end of the driving motor is connected to the length measuring roller, and the transmission belt is used for transmission between the length measuring roller and the non-woven fabric winding roller.

4. The non-woven fabric wiping mechanism for a screen printing screen for a PCB board according to claim 1, characterized in that: The material roll pressing roller assembly includes a cylinder seat fixedly connected to one side of the vertical frame, a first cylinder fixedly connected to the cylinder seat, a first roller frame connected to the output end of the first cylinder, and a pressing roller rotatably connected to the first roller frame and arranged adjacent to the length measuring roller. The pressing roller cooperates with the length measuring roller to press the non-woven fabric.

5. The non-woven fabric wiping mechanism for a screen printing screen for a PCB board according to claim 1, characterized in that: The lifting and wiping assembly includes a second cylinder fixedly connected to the other side of the vertical frame, a support plate fixedly connected to the output end of the second cylinder, a second roller frame fixedly connected to the bottom of the support plate, and a third guide roller rotatably connected to the side of the second roller frame away from the second guide roller. The second guide roller, the second roller frame, the third guide roller and the non-woven fabric winding roller are arranged in sequence along the conveying direction of the non-woven fabric.

6. The non-woven fabric wiping mechanism for a screen printing stencil for a PCB board according to claim 5, characterized in that: The lifting and wiping assembly also includes a clamping plate connected to the side of the second roller frame close to the second guide roller, and a spray plate clamped between the clamping plate and the second roller frame. The bottom of the spray plate is provided with a plurality of spray holes that are spaced apart and interconnected. The side wall of the spray plate is connected to a liquid inlet interface that is connected to the spray holes. The bottom surface of the spray plate is a wiping plane.

7. The non-woven fabric wiping mechanism for a screen printing stencil for a PCB board according to claim 1, characterized in that: The non-woven fabric wiping mechanism also includes a liquid spray gun fixedly connected to the other side of the stand, and the liquid spray gun is used to spray liquid onto the silk screen screen.

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