Sheet printing device

Abstract

The utility model discloses a sheet printing device which comprises a screen printing machine, scale marks are fixedly installed on the side wall of the screen printing machine, a feeding assembly is installed on one side of the screen printing machine and used for centering and positioning a sheet, and the feeding assembly comprises a pair of fixing plates fixedly installed on the two sides of the screen printing machine. A two-way lead screw and a guide rod are rotationally installed between the pair of fixing plates, the feeding assembly further comprises a positioning module used for bearing sheets, and the positioning module is connected with the two-way lead screw. The feeding assembly is arranged on the front portion of the screen printing machine, compared with the prior art that measurement is needed before printing, and an adhesive tape needs to be manually pasted on a printing table top for positioning, the positioning module can be adjusted according to the size of a sheet, so that the sheet is centered, sheet printing guided by the feeding assembly is located in the center of the sheet all the time, and the printing efficiency is improved. The printing device has the advantages that time and labor are saved, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the field of plastic parts processing equipment, in particular to a sheet printing device. Background Art

[0002] The coloring and surface texture decoration of plastic products can be completed during the plastic molding process. However, in order to increase the life of the product and improve its aesthetics, the surface is generally subjected to secondary processing and various decorative treatments.

[0003] Plastic part printing refers to a process of printing the desired pattern on the surface of plastic parts. It can be divided into screen printing, curved surface printing (pad printing), hot stamping, penetration printing (transfer) and etching printing. Currently, before printing plastic sheets, workers need to measure and position the sheets on the printing table according to the size of the sheets, so as to avoid skewed printing. However, when printing sheets of different sizes, repeated pasting is required, which is time-consuming and labor-intensive, affecting the efficiency of sheet printing. Utility Model Content

[0004] The purpose of the present utility model is to provide a sheet printing device to solve the problem of inconvenience in rapid positioning of sheet printing proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sheet printing device, comprising a screen printing machine, a scale mark fixedly installed on the side wall of the screen printing machine, a feeding assembly installed on one side of the screen printing machine, which is used to center the sheet, the feeding assembly comprising a pair of fixed plates fixedly installed on both sides of the screen printing machine, a bidirectional screw rod and a guide rod rotatably installed between the pair of fixed plates, one end of the bidirectional screw rod extends to pass through the outside of the fixed plate, and a handle is fixedly installed, the feeding assembly also includes a positioning module for supporting the sheet, and the positioning module is connected to the bidirectional screw rod.

[0006] Preferably, the positioning module includes a pair of moving blocks slidably mounted on the bidirectional screw rod, ear blocks are fixedly mounted on the side walls of the moving blocks, a U-shaped block is fixedly mounted on one end of the moving block, the U-shaped block extends to contact the scale mark, sliding holes are opened on the side walls of a pair of the moving blocks, the same sliding rod is slidably mounted in a pair of the sliding holes, a pair of fixed blocks are fixedly mounted at the central position of the sliding rod, and the same push rod is fixedly mounted on the top of a pair of the fixed blocks.

[0007] Preferably, guide holes are opened on the side wall of the fixing plate at positions corresponding to the sliding holes, and both ends of the sliding rod extend into the guide holes of a pair of the fixing plates respectively.

[0008] Preferably, the edge and corner connections of the ear blocks are all rounded for smooth transition.

[0009] Preferably, a pair of weight-reducing holes are provided on the ear block.

[0010] Preferably, a side plate is fixedly mounted on the top of the moving block.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] By arranging a feeding assembly at the front of the screen printing machine, compared with the current method of measuring and manually sticking tape on the printing table for positioning before printing, the present application can adjust the positioning module according to the sheet size, so that the sheet is centered, and the sheet printing guided by the feeding assembly is always in the center of the sheet, avoiding a high sheet defect rate caused by skewed printing, and has the advantages of saving time and effort and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a sheet printing device of the present invention;

[0014] Figure 2 This is an enlarged three-dimensional structural diagram of the entire feeding assembly of a sheet printing device of the present invention;

[0015] Figure 3 This is an exploded three-dimensional structural diagram of a feeding assembly of a sheet printing device according to the present invention;

[0016] Figure 4 This is an enlarged three-dimensional structural diagram of a positioning module of a sheet printing device of the present invention.

[0017] In the figure: 1. Silk screen printing machine; 2. Scale mark; 3. Fixed plate; 4. Bidirectional screw; 5. Guide rod; 6. Handle; 7. Moving block; 8. Sliding rod; 9. Side panel; 10. Ear block; 11. U-shaped block; 12. Fixed block; 13. Push rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1 and Figure 2The present invention provides a technical solution: a sheet printing device, including a screen printing machine 1, and a scale mark 2 is fixedly installed on the side wall of the screen printing machine 1. The advantage of this arrangement is that the feeding assembly can be adjusted according to the size of the sheet, so that the sheet is centered and the printing quality is improved. A feeding assembly is installed on one side of the screen printing machine 1, which is used to center the sheet. The feeding assembly includes a pair of fixed plates 3 fixedly installed on both sides of the screen printing machine 1, and a bidirectional screw rod 4 and a guide rod 5 are rotatably installed between the pair of fixed plates 3. One end of the bidirectional screw rod 4 extends to pass through the outside of the fixed plate 3 and is fixedly installed with a handle 6. The feeding assembly also includes a positioning module for supporting the sheet, and the positioning module is connected to the bidirectional screw rod 4. In this application, by arranging a feeding assembly at the front of the screen printing machine 1, the positioning module is adjusted according to the size of the sheet before printing, so that the sheet is centered. Compared with the current method of measuring and manually sticking tape on the printing table for positioning before printing, this application has the advantages of saving time and effort and convenient operation.

[0020] In one embodiment of the present invention, see Figure 2-Figure 3 The positioning module includes a pair of moving blocks 7 slidably mounted on the bidirectional screw rod 4, and a side plate 9 is fixedly mounted on the top of the moving block 7. An ear block 10 is fixedly mounted on the side wall of the moving block 7, and a pair of weight-reducing holes are opened on the ear block 10. The advantage of this arrangement is that the ear block 10 is lightweight, can save manufacturing materials, and reduce production costs. The corner connections of the ear block 10 are all rounded and smooth transitions are adopted. The purpose of this arrangement is to prevent sharp corners from scratching the skin. A U-shaped block 11 is fixedly mounted on one end of the moving block 7. The U-shaped block 11 extends to contact with the scale mark 2. One end of the U-shaped block 11 is a triangular structure, which effectively improves the adjustment accuracy. Sliding holes are opened on the side walls of a pair of moving blocks 7, and the same sliding rod 8 is slidably mounted in a pair of sliding holes. Guide holes are opened on the side walls of the fixed plate 3 at positions corresponding to the sliding holes, and the two ends of the sliding rod 8 extend to a pair of In the guide hole of the fixed plate 3, a pair of fixed blocks 12 are fixedly installed at the central position of the slide rod 8, and the top of the pair of fixed blocks 12 is fixedly installed with the same push rod 13. Before printing the sheet, first place the sheet on the printing table of the screen printing machine 1 so that one end of the sheet is located between the pair of moving blocks 7, and then screw the handle 6 (by controlling the rotation direction of the handle 6 to drive the pair of moving blocks 7 to approach or move away from each other at the same time on the bidirectional screw rod 4), so that the pair of moving blocks 7 approach each other until the side plate 9 contacts both sides of the sheet, and then push the slide rod 8 to move in the slide hole, and the slide rod 8 drives the push rod 13 to contact the end of the sheet and push the sheet to send it into the central position of the printing table, thereby realizing the sheet guided by the feeding assembly, and the printing is always in the center of the sheet, avoiding the high sheet defect rate caused by skewed printing, and ensuring the quality of sheet printing.

[0021] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet printing device, comprising a screen printing machine (1), characterized in that: A scale mark (2) is fixedly installed on the side wall of the screen printing machine (1), and a feeding assembly is installed on one side of the screen printing machine (1), which is used to center the sheet. The feeding assembly includes a pair of fixed plates (3) fixedly installed on both sides of the screen printing machine (1), and a bidirectional screw rod (4) and a guide rod (5) are rotatably installed between the pair of fixed plates (3). One end of the bidirectional screw rod (4) extends to pass through the outside of the fixed plate (3) and is fixedly installed with a handle (6). It also includes a positioning module for supporting the sheet, and the positioning module is connected to the bidirectional screw rod (4).

2. A sheet printing device according to claim 1, characterized in that: The positioning module comprises a pair of moving blocks (7) slidably mounted on the bidirectional screw rod (4), an ear block (10) is fixedly mounted on the side wall of the moving block (7), a U-shaped block (11) is fixedly mounted on one end of the moving block (7), and the U-shaped block (11) extends to contact the scale mark (2), a pair of sliding holes are provided on the side walls of the moving blocks (7), a same sliding rod (8) is slidably mounted in the pair of sliding holes, a pair of fixed blocks (12) are fixedly mounted at the central position of the sliding rod (8), and a same push rod (13) is fixedly mounted on the top of the pair of fixed blocks (12).

3. A sheet printing device according to claim 2, characterized in that: A guide hole is provided on the side wall of the fixed plate (3) at a position corresponding to the sliding hole, and both ends of the sliding rod (8) extend into the guide holes of a pair of the fixed plates (3).

4. A sheet printing device according to claim 2, characterized in that: The edge and corner connections of the ear blocks (10) are all rounded and smoothly transitioned.

5. A sheet printing device according to claim 2, characterized in that: A pair of weight-reducing holes are provided on the ear block (10).

6. A sheet printing device according to claim 2, characterized in that: A side plate (9) is fixedly mounted on the top of the moving block (7).

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