A self-locking device in a flatbed screen printing machine

Abstract

This utility model relates to the field of flatbed screen printing machine technology and discloses a self-locking device in a flatbed screen printing machine, including the machine body. Through the self-locking mechanism, using a C-shaped plate in the self-locking part, the screen body is placed on the inner side of the left C-shaped plate, thereby activating a small motor. The small motor drives a stainless steel threaded rod, which in turn drives a threaded block, causing the threaded block to move the right self-locking part, thus positioning the screen body on the inner side of the right C-shaped plate. This activates a small cylinder, which drives a pressure plate and an anti-slip plate, thereby fixing and locking the screen body. This improves upon the cumbersome multi-point bolt positioning operation used in traditional methods for connecting the screen body and the flatbed screen printing machine body, enhancing the convenience of using the screen body and the machine body together. Furthermore, by adjusting the size of the screen body, it ensures anti-deviation effects when printing text and images, guaranteeing printing uniformity and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of flatbed screen printing machine technology, specifically a self-locking device in a flatbed screen printing machine. Background Technology

[0002] The full name of a screen printing machine is "silk screen printing machine." It's a machine that uses a screen printing plate to apply printing, and it belongs to the category of printing machines. Screen printing machines are machines for printing text and images; it's a general term for machines or equipment used to produce printed materials. Screen printing machines are representative printing equipment among stencil printing machines. Besides silk, the materials used to make the screen can also include nylon, copper, steel, or stainless steel wire. They can be divided into flatbed screen printing machines, curved screen printing machines, and rotary screen printing machines, among others.

[0003] Compared to existing technologies, current screen printing machines typically use a method of rotating multiple screw handles to hold and hold the screen during the screen-fixing process. This traditional method is not only cumbersome but also requires a considerable amount of time for adjustment and calibration. More importantly, it lacks flexibility and adaptability when dealing with screens of different sizes. During printing, the pressure applied by the squeegee can easily push and shift the screen, causing the printed pattern to deviate from the pre-set substrate area, thus affecting printing accuracy and product quality. Furthermore, if the screen cannot be precisely locked, slight "movement" may occur during printing. This movement creates tiny gaps between the screen and the substrate, preventing the ink from being completely and evenly transferred to the substrate surface during squeegee operation, resulting in localized blank areas on the printed pattern, severely impacting the printing effect and product aesthetics. These problems not only reduce production efficiency but also increase the scrap rate, causing significant headaches for printing companies.

[0004] Therefore, a self-locking device for a flatbed screen printing machine is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a self-locking device for a flatbed screen printing machine. This solves the problems of existing screen printing machines that rely on rotating multiple screws and handles to hold the screen, resulting in cumbersome operation and time-consuming adjustments; poor adaptability to different screen sizes; and the inability to flexibly adjust the device for different screen sizes. During printing, the pressure of the squeegee can easily cause the screen to shift, leading to the pattern deviating from the printing area, affecting accuracy and product quality. If the screen is not precisely locked, it may also "move," creating gaps between the screen and the substrate, resulting in uneven ink transfer during ink scraping, forming localized blank areas, and ruining the printing effect and aesthetics. These problems reduce production efficiency and increase scrap rates, causing significant technical difficulties for printing companies. This invention achieves the purpose of adjusting the self-locking mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-locking device in a flatbed screen printing machine, comprising a flatbed screen printing machine body, an installation groove provided on the inner side of the flatbed screen printing machine body, a screen body body provided above the flatbed screen printing machine body, a self-locking mechanism provided on the inner side of the flatbed screen printing machine body, and a positioning mechanism provided on the bottom surface of the flatbed screen printing machine body.

[0007] The self-locking mechanism includes an adjustment section and a self-locking section;

[0008] The self-locking part is located on the front side of the adjusting part;

[0009] The positioning mechanism includes a positioning unit and a conveying unit;

[0010] The conveying section is located on the bottom surface of the positioning section.

[0011] Preferably, the adjustment unit includes a placement box, which is fixedly connected to the flatbed screen printing machine body. A U-shaped plate is provided on the right side of the placement box, and the U-shaped plate is fixedly connected to the placement box. A small motor is provided on the inner side of the U-shaped plate, and the small motor is fixedly connected to the U-shaped plate.

[0012] Preferably, the output end face of the small motor is provided with a stainless steel threaded rod, the stainless steel threaded rod is fixedly connected to the small motor, the stainless steel threaded rod extends through to the inner side of the placement box, the stainless steel threaded rod is threadedly connected to the inner wall of the placement box, the left end face of the stainless steel threaded rod is rotatably connected to the inner side of the placement box through a bearing seat, and a threaded block is sleeved on the surface of the stainless steel threaded rod, the threaded block is threadedly connected to the stainless steel threaded rod.

[0013] Preferably, the self-locking part includes an L-shaped plate, the right L-shaped plate is fixedly connected to the threaded block, the left L-shaped plate is fixedly connected to the placement box, and C-shaped plates are provided on the inner side of the L-shaped plate, and the C-shaped plates are fixedly connected to the L-shaped plate.

[0014] Preferably, each of the C-shaped plates has a small cylinder running through its inner wall, and each small cylinder has a pressure plate on its output end face. The pressure plate is fixedly connected to the small cylinder, and each pressure plate has an anti-slip plate on its bottom surface. The anti-slip plate is fixedly connected to the pressure plate.

[0015] Preferably, the positioning part includes a vacuum adsorption plate located on the inner side of the mounting groove. A suction hood is provided below the vacuum adsorption plate. The suction hood is fixedly connected to the bottom surface of the flat screen printing machine body. An extraction tube is provided on the bottom end surface of the suction hood, and the extraction tube is connected to the suction hood.

[0016] Preferably, the conveying unit includes a vacuum pump, which is connected to the extraction tube. A slotted tube is provided on the outer end face of the vacuum pump, which is connected to the vacuum pump. A fixing frame is provided on the outside of the slotted tube, which is fixedly connected to the flat screen printing machine body and the vacuum pump.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the self-locking device in a flatbed screen printing machine,

[0018] (1) Through the self-locking mechanism, the screen body is placed on the inner side of the left C-shaped plate by using the C-shaped plate in the self-locking part. The small motor is started, the small motor drives the stainless steel threaded rod, the stainless steel threaded rod drives the threaded block, and the threaded block drives the right self-locking part to move, so that the screen body is located on the inner side of the right C-shaped plate. The small cylinder is started, the small cylinder drives the pressure plate and the anti-slip plate, so as to fix and lock the screen body. This improves the cumbersome operation of the traditional screen body and the flat screen printing machine body using multi-point bolt positioning, and improves the convenience of the screen body and the flat screen printing machine body when used together. According to the size of the screen body, the anti-deviation effect when printing text and images is ensured, and the uniformity and accuracy of printing are ensured.

[0019] (2) Through the positioning mechanism, the vacuum pump in the conveying section is used to generate negative pressure. The vacuum pump sucks up the vacuum adsorption plate and the object through the extraction pipe and the suction hood, thereby fixing the object and preventing it from moving or warping. Attached Figure Description

[0020] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 3 This is a three-dimensional schematic diagram of the self-locking structure of this utility model;

[0023] Figure 4 This is a three-dimensional schematic diagram of the self-locking structure of this utility model;

[0024] Figure 5 This is a three-dimensional schematic diagram of the positioning structure of this utility model.

[0025] In the diagram: 1. Flatbed screen printing machine body; 2. Screen body body; 3. Self-locking mechanism; 31. Adjustment section; 32. Self-locking section; 311. Placement box; 312. U-shaped plate; 313. Small motor; 314. Stainless steel threaded rod; 315. Threaded block; 321. L-shaped plate; 322. C-shaped plate; 323. Small cylinder; 324. Pressure plate; 325. Anti-slip plate; 4. Positioning mechanism; 41. Positioning section; 42. Conveying section; 411. Vacuum adsorption plate; 412. Suction hood; 413. Extraction tube; 421. Vacuum pump; 422. Straight tube; 423. Fixing frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1:

[0028] Currently, existing screen printing machines rely heavily on rotating multiple screws to hold the screen in place, resulting in cumbersome operation and time-consuming setup. They also lack flexibility in adjusting to different screen sizes, exhibiting poor adaptability. During printing, squeegee pressure can easily cause the screen to shift, leading to patterns deviating from the printing area and affecting accuracy and finished product quality. If the screen is not precisely locked, it can also shift, creating gaps between the screen and the substrate, resulting in uneven ink transfer during squeegeeing, forming localized blank areas, and ruining the printing effect and aesthetics. These problems reduce production efficiency and increase scrap rates, causing significant challenges for printing companies. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 4 This utility model provides a technical solution: a self-locking device in a flat screen printing machine, including a flat screen printing machine body 1, an installation groove is provided on the inner side of the flat screen printing machine body 1, a screen body body 2 is provided above the flat screen printing machine body 1, a self-locking mechanism 3 is provided on the inner side of the flat screen printing machine body 1, and a positioning mechanism 4 is provided on the bottom surface of the flat screen printing machine body 1.

[0029] The self-locking mechanism 3 includes an adjustment part 31 and a self-locking part 32;

[0030] The self-locking part 32 is located on the front side of the adjusting part 31;

[0031] The positioning mechanism 4 includes a positioning part 41 and a conveying part 42;

[0032] The conveying part 42 is located on the bottom surface of the positioning part 41.

[0033] The adjustment unit 31 includes a placement box 311, which is fixedly connected to the flat screen printing machine body 1. A U-shaped plate 312 is provided on the right side of the placement box 311, which is fixedly connected to the placement box 311. A small motor 313 is provided on the inner side of the U-shaped plate 312, which is fixedly connected to the U-shaped plate 312.

[0034] A stainless steel threaded rod 314 is provided on the output end face of the small motor 313. The stainless steel threaded rod 314 is fixedly connected to the small motor 313. The stainless steel threaded rod 314 extends through to the inner side of the placement box 311 and is threadedly connected to the inner wall of the placement box 311. The left end face of the stainless steel threaded rod 314 is rotatably connected to the inner side of the placement box 311 through a bearing seat. A threaded block 315 is sleeved on the surface of the stainless steel threaded rod 314 and is threadedly connected to the stainless steel threaded rod 314.

[0035] The self-locking part 32 includes an L-shaped plate 321. The right L-shaped plate 321 is fixedly connected to the threaded block 315, and the left L-shaped plate 321 is fixedly connected to the placement box 311. C-shaped plates 322 are provided on the inner side of the L-shaped plate 321, and the C-shaped plates 322 are fixedly connected to the L-shaped plate 321.

[0036] Small cylinders 323 are installed through the inner wall of the C-shaped plate 322. Each small cylinder 323 has a pressure plate 324 installed on its output end face. The pressure plate 324 is fixedly connected to the small cylinder 323. Each pressure plate 324 has an anti-slip plate 325 installed on its bottom surface. The anti-slip plate 325 is fixedly connected to the pressure plate 324.

[0037] Furthermore, in this embodiment, the self-locking mechanism 3 utilizes the C-shaped plate 322 in the self-locking part 32 to place the wire mesh body 2 on the inner side of the left C-shaped plate 322. The small motor 313 is started, and the small motor 313 drives the stainless steel threaded rod 314 to rotate. The stainless steel threaded rod 314 drives the threaded block 315 to move horizontally through the threaded engagement. The threaded block 315 drives the right self-locking part 32 to move, and the C-shaped plate 322 of the right self-locking part 32 moves synchronously until the other side of the wire mesh body 2 is attached to the inner side of the right C-shaped plate 322. Then, the small cylinder 323 is started, and the small cylinder 323 drives the pressure plate 324 to move downward. The anti-slip plate 325 at the bottom of the pressure plate 324 contacts the surface of the wire mesh body 2 and applies vertical pressure.

[0038] Furthermore, in this embodiment, the self-locking mechanism 3 utilizes the C-shaped plate 322 in the self-locking part 32 to place the screen body 2 on the inner side of the left C-shaped plate 322, thereby activating the small motor 313. The small motor 313 drives the stainless steel threaded rod 314, which in turn drives the threaded block 315. This causes the threaded block 315 to move the right self-locking part 32, placing the screen body 2 on the inner side of the right C-shaped plate 322. This activates the small cylinder 323, which drives the pressure plate 324 and the anti-slip plate 325, thus fixing and locking the screen body 2. This improves the cumbersome operation of multi-point bolt positioning between the traditional screen body 2 and the flatbed screen printing machine body 1, and enhances the convenience of using the screen body 2 and the flatbed screen printing machine body 1 together. It also allows for adjustment according to the size of the screen body 2, ensuring anti-deviation effect when printing text and images, and ensuring the uniformity and accuracy of printing.

[0039] Example 2:

[0040] Please see Figure 1 , Figure 2 , Figure 5 Furthermore, based on Embodiment 1, the positioning part 41 includes a vacuum adsorption plate 411, which is located on the inner side of the mounting groove. A suction hood 412 is provided below the vacuum adsorption plate 411. The suction hood 412 is fixedly connected to the bottom surface of the flat screen printing machine body 1. An extraction tube 413 is provided on the bottom end surface of the suction hood 412, and the extraction tube 413 is connected to the suction hood 412.

[0041] The conveying unit 42 includes a vacuum pump 421, which is connected to the extraction pipe 413. A straight tube 422 is provided on the outer end face of the vacuum pump 421, which is connected to the vacuum pump 421. A fixing frame 423 is provided on the outside of the straight tube 422, which is fixedly connected to the flat screen printing machine body 1 and the vacuum pump 421.

[0042] Furthermore, in this embodiment, the vacuum pump 421 in the conveying unit 42 is activated by the positioning mechanism 4 to generate negative pressure. The vacuum pump 421 then sucks up the vacuum adsorption plate 411 and the object through the extraction pipe 413 and the suction hood 412.

[0043] Furthermore, in this embodiment, the positioning mechanism 4 utilizes the vacuum pump 421 in the conveying section 42. When the vacuum pump 421 is activated, it generates negative pressure. The vacuum pump 421 sucks up the vacuum adsorption plate 411 and the object through the extraction pipe 413 and the suction hood 412, thereby fixing the object and preventing it from moving or warping.

[0044] In use, the object is placed on the flat screen printing machine body 1. The vacuum pump 421 in the conveying section 42 is activated via the positioning mechanism 4 to generate negative pressure. The vacuum pump 421, through the extraction tube 413 and the suction hood 412, sucks up and fixes the vacuum adsorption plate 411 and the object. After fixing, the screen body 2 is placed on the inner side of the left C-shaped plate 322 via the self-locking mechanism 3. The small motor 313 is then activated, driving the stainless steel threaded rod 314. Rotating, the stainless steel threaded rod 314 drives the threaded block 315 to move horizontally through the threaded engagement. The threaded block 315 drives the right self-locking part 32 to move, and the C-shaped plate 322 of the right self-locking part 32 moves synchronously until the other side of the screen body 2 is attached to the inner side of the right C-shaped plate 322. Then, the small cylinder 323 is activated, and the small cylinder 323 drives the pressure plate 324 to move downward. The anti-slip plate 325 at the bottom of the pressure plate 324 contacts the surface of the screen body 2 and applies vertical pressure. Then, printing is performed using the flat screen printing machine body 1.

[0045] It should be noted that the technologies used in the flatbed screen printing machine body 1, screen body 2, vacuum suction plate 411, and vacuum pump 421 are currently widely disseminated as publicly available technologies within the industry. However, given the numerous models and specifications of the flatbed screen printing machine body 1, screen body 2, vacuum suction plate 411, and vacuum pump 421, it is difficult to provide a detailed description of each model here.

[0046] Although 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 alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-locking device in a flat screen printing machine, comprising a flat screen printing machine body (1), characterized in that: The inner side of the flat screen printing machine body (1) is provided with an installation groove, the upper part of the flat screen printing machine body (1) is provided with a screen body body (2), the inner side of the flat screen printing machine body (1) is provided with a self-locking mechanism (3), and the bottom surface of the flat screen printing machine body (1) is provided with a positioning mechanism (4). The self-locking mechanism (3) includes an adjustment part (31) and a self-locking part (32); The self-locking part (32) is located on the front side of the adjusting part (31); The positioning mechanism (4) includes a positioning part (41) and a conveying part (42). The conveying part (42) is located on the bottom surface of the positioning part (41).

2. A self-locking device in a flat screen printing machine according to claim 1, characterized in that: The adjustment unit (31) includes a placement box (311), which is fixedly connected to the flat screen printing machine body (1). A U-shaped plate (312) is provided on the right side of the placement box (311), which is fixedly connected to the placement box (311). A small motor (313) is provided on the inner side of the U-shaped plate (312), which is fixedly connected to the U-shaped plate (312).

3. A self-locking device in a flat screen printing machine according to claim 2, characterized in that: The output end face of the small motor (313) is provided with a stainless steel threaded rod (314), the stainless steel threaded rod (314) is fixedly connected to the small motor (313), the stainless steel threaded rod (314) extends through to the inner side of the placement box (311), the stainless steel threaded rod (314) is threadedly connected to the inner wall of the placement box (311), the left end face of the stainless steel threaded rod (314) is rotatably connected to the inner side of the placement box (311) through a bearing seat, and a threaded block (315) is sleeved on the surface of the stainless steel threaded rod (314), the threaded block (315) is threadedly connected to the stainless steel threaded rod (314).

4. A self-locking device in a flat screen printing machine according to claim 3, characterized in that: The self-locking part (32) includes an L-shaped plate (321), the right L-shaped plate (321) is fixedly connected to the threaded block (315), the left L-shaped plate (321) is fixedly connected to the placement box (311), and a C-shaped plate (322) is provided on the inner side of the L-shaped plate (321), and the C-shaped plate (322) is fixedly connected to the L-shaped plate (321).

5. A self-locking device in a flat screen printing machine according to claim 4, characterized in that: The inner wall of the C-shaped plate (322) is provided with a small cylinder (323), and the output end face of the small cylinder (323) is provided with a pressure plate (324). The pressure plate (324) is fixedly connected to the small cylinder (323), and the bottom surface of the pressure plate (324) is provided with an anti-slip plate (325). The anti-slip plate (325) is fixedly connected to the pressure plate (324).

6. A self-locking device in a flat screen printing machine according to claim 1, characterized in that: The positioning part (41) includes a vacuum adsorption plate (411), which is located on the inner side of the mounting groove. A suction hood (412) is provided below the vacuum adsorption plate (411). The suction hood (412) is fixedly connected to the bottom surface of the flat screen printing machine body (1). An extraction tube (413) is provided on the bottom end surface of the suction hood (412), and the extraction tube (413) is connected to the suction hood (412).

7. A self-locking device in a flat screen printing machine according to claim 6, characterized in that: The conveying unit (42) includes a vacuum pump (421), which is connected to the extraction tube (413). A straight tube (422) is provided on the outer end face of the vacuum pump (421), which is connected to the vacuum pump (421). A fixing frame (423) is provided on the outside of the straight tube (422), which is fixedly connected to the flat screen printing machine body (1) and the fixing frame (423) is fixedly connected to the vacuum pump (421).

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