Screen printing device for injection molded part

Abstract

The utility model discloses a silk-screen printing device for injection molding parts. The silk-screen printing device comprises a silk-screen printing machine, the working table is arranged on the screen printing machine, an electromagnet is arranged in the working table, the electromagnet is connected with a power supply, and a control switch connected with the electromagnet is arranged on the screen printing machine; and a plurality of positioning blocks, wherein magnets are arranged in the positioning blocks. Compared with the prior art, the problem that the injection molding part to be machined is inconvenient to position in the silk-screen process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silk screen printing, in particular to a silk screen printing device for injection molded parts. Background Art

[0002] Screen printing refers to the use of a silk screen as a base plate and a photosensitive platemaking method to make a screen printing plate with images and texts. Screen printing consists of five major elements: screen printing plate, scraper, ink, printing table and substrate. Printing is based on the basic principle that the mesh holes of the screen printing plate with images and texts can pass through the ink, while the mesh holes of the non-image and text parts cannot pass through the ink. When printing, pour ink on one end of the screen printing plate, use a scraper to apply a certain pressure to the ink part on the screen printing plate, and move at a constant speed toward the other end of the screen printing plate. During the movement, the ink is squeezed from the mesh holes of the image and text part to the substrate by the scraper. Due to the viscosity of the ink, the imprint is fixed within a certain range. During the printing process, the scraper is always in line contact with the screen printing plate and the substrate. The contact line moves with the scraper. Since a certain gap is maintained between the screen printing plate and the substrate, the screen printing plate generates a reaction force on the scraper through its own tension during printing. This reaction force is called rebound force. Due to the rebound force, the screen printing plate and the substrate are only in mobile line contact, while the other parts of the screen printing plate are separated from the substrate, so that the ink and the screen are broken and moved, ensuring the printing size accuracy and avoiding dirtying the substrate. When the scraper scrapes the entire plate surface, it is lifted up, and the screen printing plate is also lifted up, and the ink is gently scraped back to the initial position, so that it is a printing stroke.

[0003] In the prior art, small-batch screen printing processing generally does not use large-scale automated screen printing equipment, but workers directly use screen printing plates for processing. However, during the work process, the injection molded parts to be processed cannot be positioned during the screen printing process. If they are placed directly by hand, production errors will occur, affecting the effect of screen printing, and the position will be inconsistent, resulting in poor product uniformity and poor quality. Utility Model Content

[0004] The utility model aims to provide a screen printing device for injection molded parts in order to solve the problem of inconvenient positioning of injection molded parts to be processed during the screen printing process.

[0005] In order to achieve the above object, the utility model provides an injection molded part screen printing device, which comprises:

[0006] Silk screen printing machine;

[0007] A workbench, the workbench is arranged on the screen printing machine, an electromagnet is arranged inside the workbench, the electromagnet is connected to a power source, and a control switch connected to the electromagnet is arranged on the screen printing machine;

[0008] A plurality of positioning blocks are provided with magnets inside the positioning blocks.

[0009] As a further description of the above technical solution:

[0010] The workbench is provided with a plurality of first screw holes, and the plurality of first screw holes are arranged in an array on the workbench.

[0011] As a further description of the above technical solution:

[0012] At least one second screw hole is provided on the positioning block, a bolt is provided in the second screw hole, and the bolt is matched with the first screw hole.

[0013] As a further description of the above technical solution:

[0014] At least one third screw hole is provided on the workbench, and a limiting rod is screwed in the third screw hole.

[0015] As a further description of the above technical solution:

[0016] The screen printing machine is provided with a limiting hole corresponding to the position of the limiting rod.

[0017] As a further description of the above technical solution:

[0018] The workbench is made of insulating material.

[0019] In summary, due to the adoption of the above-mentioned technical scheme, the beneficial effect of the utility model is as follows: by arranging an electromagnet in the workbench, when performing silk-screen printing, first determine the silk-screen position of the injection molded part, place the injection molded part on the workbench, and then place the positioning block on the workbench, the positioning block is against the edge of the injection molded part, and then the electromagnet is energized, the electromagnet generates magnetism, so that the positioning block is adsorbed on the workbench, and the positioning block is fixed. When it is necessary to replace injection molded parts of different sizes, the electromagnet is powered off and the positioning block can be moved, so that the positioning block can be placed again according to the above-mentioned method to adapt to the positioning of different injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The figure is a schematic diagram of the structure of a screen printing device for injection molded parts.

[0022] Figure 2The figure is a cross-sectional view of a workbench in a screen printing device for injection molded parts.

[0023] Figure 3 The figure is a cross-sectional view of a positioning block in a screen printing device for injection molded parts.

[0024] Figure 4 The figure is a top view of a workbench in a screen printing device for injection molded parts.

[0025] Figure 5 It is a structural schematic diagram of an existing screen printing machine.

[0026] Legend:

[0027] 1. Screen printing machine; 2. Workbench; 3. Electromagnet; 4. Control switch; 5. Positioning block; 6. Magnet; 7. First screw hole; 8. Second screw hole; 9. Limit rod. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1-5 The utility model provides a screen printing device for injection molded parts, which includes:

[0034] Screen printing machine 1;

[0035] A workbench 2, wherein the workbench 2 is arranged on the screen printing machine 1, an electromagnet 3 is arranged inside the workbench 2, the electromagnet 3 is connected to a power source, and a control switch 4 connected to the electromagnet 3 is arranged on the screen printing machine 1;

[0036] A plurality of positioning blocks 5 are provided with magnets 6 inside the positioning blocks 5 .

[0037] The workbench 2 is provided with a plurality of first screw holes 7, which are arranged in an array on the workbench 2. The positioning block 5 is provided with at least one second screw hole 8, in which a bolt is provided, and the bolt is matched with the first screw hole 7. The positioning block can be fixed to the workbench again by bolts, which can improve the firmness of the positioning block.

[0038] At least one third screw hole is provided on the workbench 2, and a limit rod 9 is screwed into the third screw hole. The screen printer is provided with a limit hole corresponding to the position of the limit rod 9. The limit rod can limit the height of the screen printing plate on the screen printing machine to avoid damage to the screen printing plate. The limit rod is a screw rod. By rotating the limit rod, the height of the limit rod can be adjusted to adapt to the use when screen printing different injection molded parts.

[0039] The workbench 2 is made of insulating material. The insulating material is plastic, which can improve safety.

[0040] Working principle: By setting up an electromagnet in the workbench, when performing silk-screen printing, first determine the silk-screen position of the injection molded part, place the injection molded part on the workbench, and then place the positioning block on the workbench, with the positioning block against the edge of the injection molded part. Then, energize the electromagnet, and the electromagnet will generate magnetism, so that the positioning block is adsorbed on the workbench to complete the fixation of the positioning block. When it is necessary to replace injection molded parts of different sizes, the electromagnet is powered off and the positioning block can be moved, so that the positioning block can be placed again according to the above method to adapt to the positioning of different injection molded parts.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screen printing device for injection molded parts, characterized in that: include: Silk screen printing machine; A workbench, the workbench is arranged on the screen printing machine, an electromagnet is arranged inside the workbench, the electromagnet is connected to a power source, and a control switch connected to the electromagnet is arranged on the screen printing machine; A plurality of positioning blocks are provided with magnets inside the positioning blocks.

2. The screen printing device for injection molded parts according to claim 1, characterized in that: The workbench is provided with a plurality of first screw holes, and the plurality of first screw holes are arranged in an array on the workbench.

3. The screen printing device for injection molded parts according to claim 2, characterized in that: At least one second screw hole is provided on the positioning block, a bolt is provided in the second screw hole, and the bolt is matched with the first screw hole.

4. The screen printing device for injection molded parts according to claim 1, characterized in that: At least one third screw hole is provided on the workbench, and a limiting rod is screwed in the third screw hole.

5. The screen printing device for injection molded parts according to claim 4, characterized in that: The screen printing machine is provided with a limiting hole corresponding to the position of the limiting rod.

6. The screen printing device for injection molded parts according to claim 1, characterized in that: The workbench is made of insulating material.

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