Simple and accurate screen printing positioning device for sheet metal

Abstract

The utility model relates to a silk screen positioning fixture technical field provides a kind of simple and accurate silk screen positioning device of metal sheet, including silk screen mechanism, and positioning mechanism is provided on silk screen mechanism, and silk screen positioning mechanism includes workbench, telescopic thimble plate and adsorption plate, telescopic thimble plate is installed in workbench top, and telescopic thimble plate is slidably connected with workbench, and adsorption plate is installed in telescopic thimble plate top, and adsorption plate is fixedly connected with workbench;Compared with prior art, positioning thimble for metal sheet is positioned using evenly distributed, when silk screen plate is lowered, adjusting screw is pressed down by silk screen plate, under the driving of adjusting screw, pressing plate is lowered with entire telescopic thimble plate, and metal sheet is fixed by vacuum chuck or magnet and is lowered simultaneously, avoid to occur deviation when processing, improve processing accuracy;When silk screen plate rises, telescopic thimble plate is popped up by top spring, and positioning thimble lifts the metal sheet after silk screen, and it is convenient to pick up.

Description

Technical Field

[0001] This utility model relates to the field of screen printing positioning fixture technology, and in particular to a simple and precise screen printing positioning device for metal sheets. Background Technology

[0002] When screen printing is required, the staff needs to place the metal part to be printed under the screen printing plate and fix it to prevent the pattern from shifting or misaligning. There are two existing methods for positioning metal parts: one is to use the corners of the metal sheet for positioning, and the other is to open positioning holes on the metal sheet and use devices such as steel pins for positioning. Both of these positioning methods require high precision in the shape or hole size of the metal sheet. If not careful, the error in color registration of the screen printing will increase.

[0003] If the metal sheet to be screen printed needs to be cut and then processed again before screen printing, such as cathodic deposition metal electroplating, surface spraying powder, chemical liquid etching, etc., these secondary surface treatment processes will cause the metal sheet to have shape or aperture errors exceeding 0.2 mm, resulting in the inability to accurately position color matching or normal production.

[0004] Therefore, there is a need for a fast and accurate screen printing positioning device to improve screen printing accuracy and efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a simple and accurate screen printing positioning device for metal sheets, which aims to solve the problems of low positioning accuracy and slow efficiency of existing screen printing positioning devices for metal sheets.

[0006] To achieve the above objectives, this utility model provides a simple and precise screen printing positioning device for metal sheets, including a screen printing mechanism and a positioning mechanism. The screen printing positioning mechanism includes a worktable, a telescopic ejector plate, and an adsorption plate. The telescopic ejector plate is installed above the worktable and is slidably connected to the worktable. The adsorption plate is installed above the telescopic ejector plate and is fixedly connected to the worktable.

[0007] Furthermore, the worktable includes a base and guide pillars. The base is used to fix and connect to the screen printing mechanism. Two sets of guide pillars are provided on the base. The suction plate is installed at the end of the guide pillar away from the base. The telescopic ejector plate can slide on the guide pillar.

[0008] Furthermore, a top spring is provided on the guide post, with one end of the top spring abutting against the base and the other end of the top spring abutting against the telescopic ejector plate.

[0009] Furthermore, the telescopic ejector plate includes a positioning base plate, positioning ejector pins, and a pressure plate. The positioning base plate can slide up and down along the guide post, and four sets of positioning ejector pins are evenly arranged on the positioning base plate. The pressure plate is installed on the positioning base plate, and adjustment grooves are provided at both ends of the pressure plate. Adjustment screws are installed in the adjustment grooves and can slide in the adjustment grooves.

[0010] Furthermore, the top of the positioning pin is provided with a chamfer.

[0011] Furthermore, the adsorption plate is provided with positioning holes, through which positioning pins can pass.

[0012] Furthermore, the adsorption plate is equipped with multiple sets of magnets, which are evenly distributed on the adsorption plate.

[0013] Furthermore, a vacuum suction cup is provided on the adsorption plate.

[0014] The present invention provides a simple and precise screen printing positioning device for metal sheets. Compared with the prior art, it uses evenly distributed positioning pins to position the metal sheet. When the screen printing plate is lowered, the adjusting screw is pressed down by the screen printing plate. Driven by the adjusting screw, the pressure plate lowers along with the entire telescopic pin plate. At the same time, the lowered metal sheet is attracted and fixed by a vacuum suction cup or magnet to prevent displacement during processing and improve processing accuracy. When the screen printing plate is raised, the telescopic pin plate is lifted by the lifting spring, and the positioning pins lift the screen-printed metal sheet for easy removal. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a three-dimensional view of the telescopic ejector plate in this utility model;

[0018] Figure 4 This is a front view of the positioning base plate in this utility model;

[0019] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0020] Figure 6 This is a three-dimensional view of the magnetic adsorption method of the adsorption plate in this utility model;

[0021] Figure 7 This is a three-dimensional view of the vacuum adsorption method of the adsorption plate in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] in;

[0024] 1. Workbench; 10. Base; 11. Guide post; 12. Top spring;

[0025] 2. Telescopic ejector plate; 20. Positioning base plate; 21. Positioning ejector pin; 22. Pressure plate; 23. Adjustment groove; 24. Adjustment screw; 25. Chamfer;

[0026] 3. Adsorption plate; 30. Positioning hole; 31. Vacuum suction cup; 32. Magnet. Detailed Implementation

[0027] The present invention will be described in detail below with reference to specific embodiments.

[0028] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The directional terms appearing in this utility model are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this utility model changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0029] like Figures 1 to 7 As shown, this utility model provides a simple and precise screen printing positioning device for metal sheets, including a screen printing mechanism and a positioning mechanism. The positioning mechanism includes a worktable 1, a telescopic ejector plate 2, and an adsorption plate 3. The telescopic ejector plate 2 is installed above the worktable 1 and is slidably connected to the worktable 1. The adsorption plate 3 is installed above the telescopic ejector plate 2 and is fixedly connected to the worktable 1.

[0030] In this embodiment, the workbench 1 includes a base 10 and guide posts 11. The base 10 is used to be fixedly connected to the screen printing mechanism. Two sets of guide posts 11 are provided on the base 10. The adsorption plate 3 is installed at the end of the guide post 11 away from the base 10. The telescopic ejector plate 2 can slide on the guide post 11.

[0031] In this embodiment, a top spring 12 is provided on the guide post 11. One end of the top spring 12 abuts against the base 10, and the other end of the top spring 12 abuts against the telescopic ejector plate 2.

[0032] In this embodiment, the telescopic ejector plate 2 includes a positioning base plate 20, positioning ejector pins 21, and a pressure plate 22. The positioning base plate 20 can slide up and down along the guide post 11, and four sets of positioning ejector pins 21 are evenly arranged on the positioning base plate 20. The pressure plate 22 is installed on the positioning base plate 20, and adjustment grooves 23 are provided at both ends of the pressure plate 22. Adjustment screws 24 are installed in the adjustment grooves 23, and the adjustment screws 24 can slide in the adjustment grooves 23.

[0033] In this embodiment, the top end of the positioning pin 21 is provided with a chamfer 25.

[0034] In this embodiment, the adsorption plate 3 is provided with a positioning hole 30, and the positioning pin 21 can pass through the positioning hole 30.

[0035] With the above design scheme, when installing the positioning mechanism, the user needs to install the base 10 on the screen printing mechanism, then place the telescopic ejector plate 2 on the guide post 11, and finally place the suction plate 3 on the telescopic ejector plate 2 and fix the suction plate 3 to the guide post 11. Under the action of the top spring 12, the telescopic ejector plate 2 will push against the suction plate 3, so that the positioning ejector 21 passes through the positioning hole 30 of the suction plate 3 and comes above the suction plate 3, so that the chamfer 25 of the positioning ejector 21 protrudes from the suction plate 3, which is convenient for placing the metal sheet. The chamfer 25 of the positioning ejector 21 makes it easier for the staff to place the metal sheet. After the punching equipment punches the required positioning through hole on the metal sheet, even after electroplating, spraying or chemical corrosion, the deformation produced by the through hole is the same. When positioning, the user only needs to align the through hole with the chamfer 25.

[0036] When screen printing is required, the screen printing plate slowly descends under the drive of the screen printing mechanism. The edge of the screen printing plate contacts the adjusting screw 24 first. The adjusting screw 24 presses down the base 10 and the positioning pin 21 through the pressure plate 22, so that the positioning pin 21 slowly retracts to the bottom of the suction plate 3, avoiding damage to the screen printing plate by the protruding positioning pin 21.

[0037] After the screen printing operation, the screen printing plate is lifted. Under the action of the top spring 12, the telescopic ejector plate 2 is lifted, and the positioning ejector 21 re-passes through the positioning hole 30 protrusion, lifting up the metal sheet adsorbed on the adsorption plate 3, making it convenient for the staff to pick up the parts.

[0038] Since the screen printing mechanism is existing technology and is not an improvement of this embodiment, it is not described in detail in this embodiment.

[0039] In this embodiment, multiple sets of magnets 32 are provided on the adsorption plate 3, and the magnets 32 are evenly distributed on the adsorption plate 3. When the metal sheet is ferromagnetic, as the positioning pin 21 descends, the metal sheet will be directly adsorbed onto the adsorption plate 3 by the magnets 32, thus avoiding displacement during screen printing.

[0040] In this embodiment, a vacuum suction cup 31 is provided on the adsorption plate 3, which is used to connect to a vacuum pump. When the metal sheet is an aluminum sheet, the magnet 32 ​​cannot hold the metal sheet, so a vacuum pump is needed to draw a vacuum to fix the metal sheet. When it is necessary to fix the metal sheet, the vacuum pump is started, and the metal sheet is firmly adsorbed onto the adsorption plate 3 by the air pressure generated by the vacuum suction cup 31, so as to prevent the metal plate from shifting during the processing.

[0041] The present invention provides a simple and precise screen printing positioning device for metal sheets. Compared with the prior art, it uses evenly distributed positioning pins 21 to position the metal sheet. When the screen printing plate is lowered, the adjusting screw 24 is pressed down by the screen printing plate. Driven by the adjusting screw 24, the pressure plate 22 lowers the entire telescopic pin plate 2. At the same time, the lowered metal sheet is attracted and fixed by the vacuum suction cup 31 or the magnet 32 ​​to prevent displacement during processing and improve processing accuracy. When the screen printing plate is raised, the telescopic pin plate 2 is lifted by the lifting spring 12, and the positioning pins 21 lift the screen-printed metal sheet for easy removal.

[0042] Where there is no conflict, the above embodiments and features can be combined with each other.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A simple and precise screen printing positioning device for metal sheets, comprising a screen printing mechanism, characterized in that: The screen printing mechanism is equipped with a positioning mechanism, which includes a worktable (1), a telescopic ejector plate (2) and an adsorption plate (3). The telescopic ejector plate (2) is installed above the worktable (1) and is slidably connected to the worktable (1). The adsorption plate (3) is installed above the telescopic ejector plate (2) and is fixedly connected to the worktable (1).

2. The simple and precise screen printing positioning device for metal sheets according to claim 1, characterized in that: The workbench (1) includes a base (10) and guide posts (11). The base (10) is used to be fixedly connected to the screen printing mechanism. Two sets of guide posts (11) are provided on the base (10). The adsorption plate (3) is installed at the end of the guide post (11) away from the base (10). The telescopic ejector plate (2) can slide on the guide post (11).

3. The simple and precise screen printing positioning device for metal sheets according to claim 2, characterized in that: A top spring (12) is provided on the guide post (11). One end of the top spring (12) abuts against the base (10), and the other end of the top spring (12) abuts against the telescopic ejector plate (2).

4. The simple and precise screen printing positioning device for metal sheets according to claim 2, characterized in that: The telescopic ejector plate (2) includes a positioning base plate (20), positioning ejector pins (21) and a pressure plate (22). The positioning base plate (20) can slide up and down along the guide post (11). Four sets of positioning ejector pins (21) are evenly arranged on the positioning base plate (20). The pressure plate (22) is installed on the positioning base plate (20). The two ends of the pressure plate (22) are provided with adjustment grooves (23). Adjustment screws (24) are installed in the adjustment grooves (23). The adjustment screws (24) can slide in the adjustment grooves (23).

5. The simple and precise screen printing positioning device for metal sheets according to claim 4, characterized in that: The top of the positioning pin (21) is provided with a chamfer (25).

6. The simple and precise screen printing positioning device for metal sheets according to claim 4, characterized in that: The adsorption plate (3) is provided with a positioning hole (30), and the positioning pin (21) can pass through the positioning hole (30).

7. The simple and precise screen printing positioning device for metal sheets according to claim 6, characterized in that: Multiple sets of magnets (32) are provided on the adsorption plate (3), and the magnets (32) are evenly distributed on the adsorption plate (3).

8. A simple and precise screen printing positioning device for metal sheets according to claim 6, characterized in that: A vacuum suction cup (31) is provided on the adsorption plate (3).

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