A screen printing device

Abstract

The utility model discloses a silk screen printing device, it includes base, set up on the XYZ axle drive module of base, the mobile frame that is driven along the XYZ direction movement of the drive of XYZ axle drive module, silk screen installation module that is set up in the mobile frame bottom, linear drive module that is set up on the mobile frame, gantry mounting bracket that is driven to carry out linear movement of linear drive module and set up on the gantry mounting bracket ink scraping subassembly and back ink subassembly, the left and right sides of mobile frame all are provided with first sliding rail, the left and right sides of gantry mounting bracket all are through first sliding block sliding and set up on first sliding rail. The utility model discloses can improve the stability of printing to guarantee the accuracy of printing, can also improve the quality of printing.

Description

Technical Field

[0001] This utility model belongs to the field of screen printing technology, and in particular relates to a screen printing device. Background Technology

[0002] Currently, screen printing is the most common method used in the production of photovoltaic module cells. Existing technologies include numerous screen printing devices. For example, Chinese Patent Publication No. CN218505454U discloses a screen printing displacement adjustment mechanism and screen printing device. The screen printing displacement adjustment mechanism includes a base, an adjustment component, and a screen assembly. The screen assembly includes a base plate, a screen mounted on the base plate, a lateral drive unit mounted on the base plate, and a doctor blade and a return blade driven by the lateral drive unit. The output end of the lateral drive unit is connected to a housing. The doctor blade and return blade are mounted on the housing. The lateral drive unit drives the housing to move. The doctor blade and return blade at the housing move synchronously with the housing to complete the operation. As shown in the figure, the housing, doctor blade, and return blade move synchronously under the drive of the lateral drive unit. Therefore, the housing, doctor blade, return blade, and the structure driving the doctor blade and return blade to rise and fall are all in a cantilevered state. During operation, these components tend to swing up and down, resulting in uneven ink film thickness during screen printing. Uneven ink film thickness affects printing quality and consequently, the performance of the battery cells. Therefore, during printing, it is necessary to ensure the stability of the housing, doctor blade, return blade, and the structure driving the doctor blade and return blade to rise and fall, avoiding this swinging tendency. To solve this problem, improvements to the existing technology are needed.

[0003] Therefore, it is necessary to provide a screen printing apparatus to solve the above-mentioned technical problems. Utility Model Content

[0004] The main objective of this invention is to provide a screen printing device that can improve printing stability, thereby ensuring printing accuracy and improving printing quality.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a screen printing device, comprising a base, an XYZ axis drive module disposed on the base, a movable frame that moves along the XYZ direction driven by the XYZ axis drive module, a screen mounting module disposed at the bottom of the movable frame, a linear drive module disposed on the movable frame, a gantry mounting frame that moves linearly driven by the linear drive module, and a scraper assembly and an ink return assembly disposed on the gantry mounting frame. The movable frame is provided with first slide rails on both its left and right sides, and the gantry mounting frame is slidably disposed on the first slide rails on both its left and right sides by first sliders.

[0006] Furthermore, the XYZ axis drive module includes a Y-axis drive component disposed on the base, a first support plate driven by the Y-axis drive component to move in the Y direction, an X-axis drive component disposed on the first support plate, and a first support frame driven by the X-axis drive component to move in the X direction. Both ends of the first support frame are vertically disposed with Z-axis drive components. The movable frame is disposed between the two Z-axis drive components and is driven by the Z-axis drive components to move in the Z direction.

[0007] Furthermore, the base is provided with a plurality of second slide rails extending along the Y direction, and the first support plate is slidably mounted on the second slide rails by a plurality of second sliders; the first support plate is provided with a plurality of third slide rails extending along the X direction, and the first support frame is slidably mounted on the third slide rails by a plurality of third sliders; both ends of the first support frame are provided with a plurality of fourth slide rails along the Z direction, and the movable frame is slidably mounted on the fourth slide rails by a plurality of fourth sliders.

[0008] Furthermore, the doctor blade assembly includes a first drive member disposed on the gantry mounting bracket, a second support plate driven by the first drive member to move up and down, a first cylinder disposed on the second support plate, a third support plate driven by the first cylinder to move up and down, and a doctor blade detachably disposed at the bottom of the third support plate.

[0009] Furthermore, the ink return assembly includes a second drive member disposed on the gantry mounting bracket, a fourth support plate driven by the second drive member to move up and down, and a detachable ink return blade disposed at the bottom of the fourth support plate.

[0010] Furthermore, the movable frame is provided with a first sensor group for detecting the front and rear positions of the gantry mounting frame, the side of the first driving member is provided with a second sensor group for detecting the up and down positions of the doctor blade, and the side of the second driving member is provided with a third sensor group for detecting the up and down positions of the return ink blade.

[0011] Furthermore, the wire mesh mounting module includes a wire mesh mounting plate disposed at the bottom of the movable frame and an adjustment component for adjusting the angle and horizontal position of the wire mesh mounting plate. The adjustment component is installed at the bottom of the movable frame, and the bottom of the movable frame is provided with a plurality of fifth slide rails. The wire mesh mounting plate is slidably disposed on the fifth slide rails by a fifth slider.

[0012] Furthermore, the movable frame is provided with a first clearance space for the doctor blade and the ink return blade to move back and forth, and the screen mounting plate is provided with a second clearance space in the middle corresponding to the first clearance space.

[0013] Furthermore, the bottom two sides of the wire mesh mounting plate are provided with slots for holding the wire mesh, and the two sides of the wire mesh mounting plate are provided with locking components for locking the wire mesh.

[0014] Furthermore, the locking assembly includes a second cylinder disposed on the wire mesh mounting plate and a locking member that is driven by the second cylinder to move up and down, and the wire mesh is provided with positioning holes that cooperate with the locking member.

[0015] Compared with the prior art, the advantages of this screen printing device are as follows:

[0016] (1) The left and right sides of the movable frame are provided with first slide rails. The left and right sides of the gantry mounting frame are slidably mounted on the first slide rails by first sliders. The two sides of the gantry mounting frame are mounted on the first slide rails by first sliders. The two sides of the gantry mounting frame are supported, which can ensure the stability of the gantry mounting frame, thereby ensuring the stability of the squeegee assembly and the ink return assembly when they are working. It can avoid the tendency of the gantry mounting frame, squeegee assembly and ink return assembly to swing up and down, which can improve the stability of printing and thus ensure the accuracy of printing.

[0017] (2) A first cylinder is provided on the third support plate of the doctor blade assembly. Gas is introduced into the first cylinder, which can make the doctor blade always float up and down, offset the height error of the surface of the product to be printed, ensure the uniformity of the printing ink thickness, and prevent the product from being damaged, thereby improving the printing quality.

[0018] (3) Both the doctor blade and the return blade are detachable, so that when changing the oil film, the doctor blade and the return blade can be quickly removed for cleaning, and the doctor blade and the return blade can be quickly replaced when they are worn, making the operation more convenient and flexible.

[0019] (4) The moving frame is equipped with a first sensor group for detecting the front and rear positions of the gantry mounting frame, the side of the first drive component is equipped with a second sensor group for detecting the up and down positions of the doctor blade, and the side of the second drive component is equipped with a third sensor group for detecting the up and down positions of the return ink blade. By using multiple sensor groups to detect the positions of the gantry mounting frame, doctor blade, and return ink blade, printing accuracy can be guaranteed and printing quality can be improved.

[0020] (5) Locking components for locking the wire mesh are provided on both sides of the wire mesh mounting plate. Positioning holes that cooperate with the locking components are provided on the wire mesh. After the wire mesh is inserted into the slot, the second cylinder drives the locking component to extend into the positioning hole, locking the wire mesh on the wire mesh mounting plate and restricting the movement of the wire mesh on the wire mesh mounting plate. When the adjusting component adjusts the angle and horizontal position of the wire mesh mounting plate, the wire mesh and the wire mesh mounting plate move together, thereby realizing the adjustment of the angle and horizontal position of the wire mesh, which can prevent the position of the wire mesh from shifting, thereby ensuring the accuracy of printing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the screen printing apparatus according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the base and XYZ axis drive module in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the screen printing device without the base and XYZ axis drive module according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the ink scraping assembly, ink return assembly, second sensor group, and third sensor group in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the movable frame and wire mesh mounting module according to an embodiment of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the wire mesh mounting module according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the wire mesh mounting module according to an embodiment of the present invention;

[0028] The numbers in the diagram represent:

[0029] 100 - Screen printing equipment;

[0030] 1-Base, 11-Second slide rail;

[0031] 2-XYZ axis drive module, 21-Y axis drive component, 22-first support plate, 221-second slider, 222-third slide rail, 23-X axis drive component, 24-first support frame, 241-third slider, 242-fourth slide rail, 25-Z axis drive component;

[0032] 3-Moving frame, 31-First sensor group, 311-First sensor, 312-Second sensor, 313-First sensing plate, 32-First clearance space, 33-First slide rail, 34-Fourth slider, 35-Fifth slide rail;

[0033] 4-Wire mesh mounting module, 41-Wire mesh mounting plate, 411-Fifth slider, 412-Second clearance space, 413-Slot, 42-Adjustment component, 43-Locking component, 431-Second cylinder, 432-Locking element;

[0034] 5-Linear drive components;

[0035] 6-Gantry mounting bracket, 61-First slider, 62-Second sensor group, 621-Third sensor, 622-Fourth sensor, 623-Second sensing element, 63-Third sensor group, 631-Fifth sensor, 632-Sixth sensor, 633-Third sensing element;

[0036] 7-Scraper assembly, 71-First drive unit, 72-Second support plate, 73-First cylinder, 74-Third support plate, 75-Scraper blade;

[0037] 8-Ink return assembly, 81-Second drive unit, 82-Fourth support plate, 83-Ink return blade;

[0038] 9-Silk screen. Detailed Implementation

[0039] Please refer to Figures 1-7 This embodiment is a screen printing apparatus 100. The screen printing apparatus 100 includes a base 1, an XYZ axis drive module 2 mounted on the base 1, a movable frame 3 driven by the XYZ axis drive module 2 to move along the XYZ direction, a screen mounting module 4 mounted at the bottom of the movable frame 3, a linear drive module 5 mounted on the movable frame 3, a gantry mounting frame 6 driven by the linear drive module 5 to move linearly, and a doctor blade assembly 7 and a return ink assembly 8 mounted on the gantry mounting frame 6. The movable frame 3 has first slide rails 33 on both its left and right sides. The gantry mounting frame 6 is slidably mounted on the first slide rails 33 on both its left and right sides via first sliders 61. The gantry mounting frame 6 is supported on both sides via first sliders 61, ensuring the stability of the gantry mounting frame 6, thereby ensuring the stability of the doctor blade assembly 7 and the return ink assembly 8 during operation. This prevents the gantry mounting frame 6, doctor blade assembly 7, and return ink assembly 8 from swinging up and down, thus ensuring printing stability.

[0040] The XYZ axis drive module 2 includes a Y-axis drive component 21 mounted on a base 1, a first support plate 22 driven by the Y-axis drive component 21 to move in the Y direction, an X-axis drive component 23 mounted on the first support plate 22, and a first support frame 24 driven by the X-axis drive component 23 to move in the X direction. Both ends of the first support frame 24 are vertically mounted with Z-axis drive components 25. The movable frame 3 is mounted between the two Z-axis drive components 25 and is driven by the Z-axis drive components 25 to move in the Z direction.

[0041] The base 1 is provided with several second slide rails 11 extending along the Y direction, and the first support plate 22 is slidably mounted on the second slide rails 11 via several second sliders 221. The first support plate 22 is provided with several third slide rails 222 extending along the X direction, and the first support frame 24 is slidably mounted on the third slide rails 222 via several third sliders 241. Both ends of the first support frame 24 are provided with several fourth slide rails 242 extending along the Z direction, and the movable frame 3 is slidably mounted on the fourth slide rails 242 via several fourth sliders 34.

[0042] The doctor blade assembly 7 includes a first drive unit 71 mounted on the gantry mounting bracket 6, a second support plate 72 driven by the first drive unit 71 to move up and down, a first cylinder 73 mounted on the second support plate 72, a third support plate 74 driven by the first cylinder 73 to move up and down, and a detachable doctor blade 75 mounted at the bottom of the third support plate 74. If the first drive unit 71 drives the second support plate 72 to lower the doctor blade 75 directly to the set height, the doctor blade 75 may cause uneven printing thickness due to height errors on the surface of the product to be printed. In more serious cases, it may damage the product to be printed. Therefore, the first cylinder 73 is mounted on the third support plate 74. Gas is introduced into the first cylinder 73, which keeps the doctor blade 75 in a constant up-and-down floating trend, offsetting the height errors on the surface of the product to be printed, ensuring the uniformity of the printing ink thickness, and preventing damage to the product.

[0043] The ink return assembly 8 includes a second drive member 81 mounted on the gantry mounting bracket 6, a fourth support plate 82 driven by the second drive member 81 to move up and down, and a detachable ink return blade 83 mounted at the bottom of the fourth support plate 82.

[0044] Both the doctor blade 75 and the return blade 83 are detachable, allowing for quick removal and cleaning when changing the oil film. They are also easy to replace when worn, making operation more convenient and flexible.

[0045] The movable frame 3 is provided with a first clearance space 32 for the doctor blade 75 and the return blade 83 to move back and forth. The screen mounting module 4 is installed below the clearance space 32, and the screen 9 is installed directly below the first clearance space 32.

[0046] The movable frame 3 is equipped with a first sensor group 31 for detecting the front and rear positions of the gantry mounting frame 6, the side of the first drive component 71 is equipped with a second sensor group 62 for detecting the up and down positions of the doctor blade 75, and the side of the second drive component 81 is equipped with a third sensor group 63 for detecting the up and down positions of the return ink blade 83.

[0047] The first sensor group 31 includes a first sensor 311 located at the front end and a second sensor 312 located at the rear end. A first sensing element 313 for sensing by the first sensor 311 and the second sensor 312 is provided on the gantry mounting bracket 6. The second sensor group 62 includes a third sensor 621 located at the upper end and a fourth sensor 622 located at the lower end. A second sensing element 623 for sensing by the third sensor 621 and the fourth sensor 622 is provided on the second support plate 72. The third sensor group 63 includes a fifth sensor 631 located at the upper end and a sixth sensor 632 located at the lower end. A third sensing element 633 for sensing by the fifth sensor 631 and the sixth sensor 632 is provided on the fourth support plate 82.

[0048] The wire mesh mounting module 4 includes a wire mesh mounting plate 41 disposed at the bottom of the movable frame 3 and an adjustment component 42 for adjusting the angle and horizontal position of the wire mesh mounting plate 41. The adjustment component 42 is installed at the bottom of the movable frame 3. Several fifth slide rails 35 are provided at the bottom of the movable frame 3. The wire mesh mounting plate 41 is slidably disposed on the fifth slide rails 35 by a fifth slider 411.

[0049] The wire mesh mounting plate 41 has a second clearance space 412 in the middle, corresponding to the first clearance space 32. The bottom sides of the wire mesh mounting plate 41 have slots 413 for holding the wire mesh 9. Locking components 43 for locking the wire mesh 9 are provided on both sides of the wire mesh mounting plate 41. Each locking component 43 includes a second cylinder 431 mounted on the wire mesh mounting plate 41 and a locking element 432 driven by the second cylinder 431 to move up and down. The wire mesh 9 has a positioning hole that cooperates with the locking element 432. After the wire mesh 9 is inserted into the slot 413, the second cylinder 431 drives the locking element 432 to extend into the positioning hole, locking the wire mesh 9 onto the wire mesh mounting plate 41 and restricting its movement. When the adjusting component 42 adjusts the angle and horizontal position of the wire mesh mounting plate 41, the wire mesh 9 moves together with the wire mesh mounting plate 41, thereby adjusting the angle and horizontal position of the wire mesh 9.

[0050] Adjustment component 42 is existing technology and will not be described in detail here. The design in the existing technology can be adopted and there is no limitation here. You can also refer to the structure of the main adjustment component in the article "Screen Adjustment Mechanism and Screen Printing Machine" published by Chinese Patent Publication No. CN109774297B.

[0051] When the screen printing device 100 provided by this solution is applied, the first driving member 71 drives the doctor blade 75 and the second driving member 81 drives the ink return blade 83 to approach the screen 9 simultaneously. Under the drive of the linear driving member 5, the doctor blade 75 prints ink on the battery cell, and the ink return blade 83 recovers the excess ink, thereby realizing the printing of the battery cell.

[0052] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A screen printing apparatus characterized by comprising: It includes a base, an XYZ axis drive module mounted on the base, a movable frame that moves along the XYZ direction driven by the XYZ axis drive module, a screen mounting module mounted at the bottom of the movable frame, a linear drive module mounted on the movable frame, a gantry mounting frame that moves linearly driven by the linear drive module, and a scraper assembly and a return assembly mounted on the gantry mounting frame. The movable frame has first slide rails on both its left and right sides, and the gantry mounting frame is slidably mounted on the first slide rails on both its left and right sides via first sliders.

2. The screen printing apparatus as described in claim 1, characterized in that: The XYZ axis drive module includes a Y-axis drive unit mounted on the base, a first support plate driven by the Y-axis drive unit to move in the Y direction, an X-axis drive unit mounted on the first support plate, and a first support frame driven by the X-axis drive unit to move in the X direction. Z-axis drive units are vertically mounted at both ends of the first support frame. The movable frame is mounted between the two Z-axis drive units and is driven by the Z-axis drive units to move in the Z direction.

3. A screen printing apparatus as claimed in claim 2, wherein: The base is provided with a plurality of second slide rails extending along the Y direction, and the first support plate is slidably mounted on the second slide rails by a plurality of second sliders; the first support plate is provided with a plurality of third slide rails extending along the X direction, and the first support frame is slidably mounted on the third slide rails by a plurality of third sliders; both ends of the first support frame are provided with a plurality of fourth slide rails along the Z direction, and the movable frame is slidably mounted on the fourth slide rails by a plurality of fourth sliders.

4. A screen printing apparatus as claimed in claim 1, wherein: The doctor blade assembly includes a first drive unit mounted on the gantry mounting bracket, a second support plate driven by the first drive unit to move up and down, a first cylinder mounted on the second support plate, a third support plate driven by the first cylinder to move up and down, and a detachable doctor blade mounted on the bottom of the third support plate.

5. A screen printing apparatus as claimed in claim 4, wherein: The ink return assembly includes a second drive unit mounted on the gantry mounting bracket, a fourth support plate driven by the second drive unit to move up and down, and a detachable ink return blade mounted at the bottom of the fourth support plate.

6. The screen printing apparatus as described in claim 5, characterized in that: The movable frame is equipped with a first sensor group for detecting the front and rear positions of the gantry mounting frame, a second sensor group for detecting the up and down positions of the doctor blade is provided on the side of the first drive component, and a third sensor group for detecting the up and down positions of the return ink blade is provided on the side of the second drive component.

7. The screen printing apparatus as described in claim 5, characterized in that: The wire mesh mounting module includes a wire mesh mounting plate disposed at the bottom of the movable frame and an adjustment component for adjusting the angle and horizontal position of the wire mesh mounting plate. The adjustment component is installed at the bottom of the movable frame, and the bottom of the movable frame is provided with a plurality of fifth slide rails. The wire mesh mounting plate is slidably disposed on the fifth slide rails by a fifth slider.

8. The screen printing apparatus as described in claim 7, characterized in that: The movable frame is provided with a first clearance space for the doctor blade and the ink return blade to move back and forth, and the screen mounting plate is provided with a second clearance space in the middle corresponding to the first clearance space.

9. The screen printing apparatus as described in claim 7, characterized in that: The bottom two sides of the wire mesh mounting plate are provided with slots for holding the wire mesh, and the two sides of the wire mesh mounting plate are provided with locking components for locking the wire mesh.

10. The screen printing apparatus as described in claim 9, characterized in that: The locking assembly includes a second cylinder disposed on the wire mesh mounting plate and a locking member that is driven by the second cylinder to move up and down. The wire mesh is provided with positioning holes that cooperate with the locking member.

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