Curved surface silk screen printing workpiece green printing machine and printing head thereof

Abstract

This utility model discloses a green printing machine for curved surface screen printing workpieces and its printing head, relating to the field of printing equipment. It includes a printing machine body and a screen. The screen is installed inside the printing machine body. A slide rod is movably installed on one side of the printing machine body, and a connecting block is movably installed on one side of the slide rod. A connecting rod is installed at one end of the connecting block. This utility model solves the problem of mismatch between different brush heads and connecting rod sizes. When small-sized printing is required, simply move the long plate up and use a limiting block to limit the long plate above the slide groove; the mounting plate can then be used as a small-sized brush head. When large-sized printing is required, rotate the rotating block to retract the limiting block into the moving groove, allowing the long plate to slide to the bottom; the long plate can then be used as a large-sized printing brush head. When irregular brush heads are needed, they can be installed on the long plate or the mounting plate according to their size. All brush heads are more stable during the printing process, improving the printing success rate.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment, specifically to a green printing machine for curved screen printing workpieces and its printing head. Background Technology

[0002] With the explosive growth of industrial manufacturing, products are now incredibly diverse. Previously, product packaging was generally flat, with relatively simple text and graphic printing. However, with product upgrades, more and more curved packaging is emerging, leading to the rapid development of curved screen printing machines. These machines can be used for both flat and shaped printing, such as glass products, plastic products, metal products, watches, electronic and optical products, etc. Furthermore, my country's printing and packaging industry currently faces various environmental issues, including excessive ink usage and uneven ink coating, resulting in substandard printed products.

[0003] Modern automated curved screen printing machines require ink to be placed in a special screen, the product to be printed to be placed under the screen, excess ink to be scraped off, and then the screen is pressed with a brush head to transfer the ink from the screen to the surface of the product. Finally, after the ink dries, the surface of the product is cleaned, and the printing is finished. However, more environmental problems are arising from portable curved screen printing machines in many small factories.

[0004] Existing portable curved screen printing machines have limited applicability and cannot meet diverse production needs due to the small size of the mounting plate and brush head. This is because excessive ink is added during operation and the brush head cannot remove the excess ink. Furthermore, brush heads of different sizes cannot be mounted on the mounting plate. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a green printing machine for curved screen printing workpieces and its printing head, so as to solve the technical problem of mismatch between different brush heads and connecting rod sizes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a green printing machine for curved surface screen printing workpieces and its printing head, comprising a printing machine body and a screen, wherein the screen is installed inside the printing machine body, a slide rod is movably installed on one side of the printing machine body, and a connecting block is movably installed on one side of the slide rod, a connecting rod is installed at one end of the connecting block, and an mounting plate is fixedly installed at the other end of the connecting rod, a sliding groove is opened inside the mounting plate, a long plate is movably installed on one side of the mounting plate, a rotating block is installed through the mounting plate, a fixing rod is fixed on one side of the rotating block, a first pull rope is wound around the outer wall of the fixing rod, a limit block is connected to one end of two sets of the first pull ropes, and a second spring is connected to one end of the limit block, a second pull rope is wound around the outer wall of the fixing rod, a second limit groove is installed inside the mounting plate, and a brush head is movably installed at the bottom of both the mounting plate and the long plate.

[0007] By adopting the above technical solution, the problem of mismatch between different brush heads and connecting rod sizes is solved. When small-size printing is required, simply move the long plate up and use the limiting block to limit the long plate above the slide groove. The mounting plate can then be used as a small-size brush head. When large-size printing is required, rotate the rotating block to retract the limiting block into the moving groove, allowing the long plate to slide to the bottom. Use the limiting block to limit the long plate below the slide groove. The long plate can then be used as a large-size printing brush head. When irregular brush heads are required, they can also be installed on the long plate or mounting plate according to the size of the brush head. All brush heads will be more stable during the printing process, and the printing pass rate will be improved.

[0008] The present invention is further configured such that the screen is movably connected to the inner wall of the printing machine body via a slide rail.

[0009] By adopting the above technical solution, the printed pattern on the screen can be transferred to the product by pulling the screen.

[0010] The present invention is further configured such that a support frame is installed inside the printing press body, and rollers are sleeved on the outer wall of the support frame.

[0011] By adopting the above technical solution, the rollers fitted on the outer wall of the support frame can make the product roll in place, so that the curved surface can also come into contact with the screen and realize curved surface printing.

[0012] The present invention is further configured such that a slider is fixed on one side of the long plate, and one end of the slider is larger than the groove.

[0013] By adopting the above technical solution, the slider is larger than the groove, which can limit the slider within the groove, preventing the long plate from falling off and avoiding printing errors.

[0014] The present invention is further configured such that a movable groove is formed on the inner wall of the slide groove, and the inner wall of the movable groove is in contact with the outer wall of the limiting block. The length of the limiting block is longer than the width of the slide groove, and the length of the limiting block is shorter than the length of the movable groove.

[0015] By adopting the above technical solution, the length of the limiting block can span the slide groove, but the limiting block will not exceed the position of the moving groove when it is in the retracted state. This ensures that the limiting block will not shift in the moving groove and avoids the problem of loosening of the limiting block.

[0016] The present invention is further configured such that a first limiting groove is provided on one side of the slide, and the inner wall of the first limiting groove is in contact with the outer wall of the rotating block.

[0017] By adopting the above technical solution, when the rotating block is selected for installation, it needs to be pulled outward until it is disengaged from the first limiting groove. When it needs to be fixed, the rotating block is embedded into the first limiting groove, which can fix the position of the rotating block and prevent it from rotating, thus avoiding the loosening and displacement of the limiting block.

[0018] The present invention is further configured such that two sets of the first pull ropes are wound clockwise in the same direction around the outer wall of the fixing rod, and one end of the fixing rod is connected to a first spring.

[0019] By adopting the above technical solution, when the rotating block rotates clockwise, the first pull rope pulls the limiting block inward to compress the second spring, and the slider can move freely.

[0020] The present invention is further configured such that two sets of the second pull ropes are wound counterclockwise in the same direction on the outer wall of the fixed rod, and one end of each set of the second pull ropes is connected to a limiting block installed at the bottom of the slide groove.

[0021] By adopting the above technical solution, when the rotating block rotates counterclockwise, the second pull rope pulls the limiting block inward to compress the second spring, and the slider can move freely. The first pull rope will relax, causing the second spring at one end of the first pull rope to regain its elasticity, causing the limiting block to move outward, which can limit the slider above the slide groove.

[0022] In summary, the present invention has the following main advantages:

[0023] This invention solves the problem of mismatched brush head and connecting rod sizes by incorporating a connecting rod, mounting plate, slide groove, moving groove, long plate, slider, rotating block, fixing rod, first spring, second limiting groove, second spring, limiting block, first pull rope, second pull rope, and brush head. When small-size printing is required, simply move the long plate up and use the limiting block to position it above the slide groove; the mounting plate can then be used as a small-size brush head. When large-size printing is required, rotate the rotating block to retract the limiting block into the moving groove, allowing the long plate to slide to the bottom and use the limiting block to position it below the slide groove; the long plate can then be used as a large-size printing brush head. For irregularly shaped brush heads, the brush head can be installed on either the long plate or the mounting plate according to its size. All brush heads are more stable during the printing process, improving the printing success rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the mounting plate of this utility model in operation;

[0025] Figure 2 This is a schematic diagram of the long plate of this utility model in operation;

[0026] Figure 3 This is a schematic diagram of the irregular brush head of this utility model in operation;

[0027] Figure 4 This is a diagram showing the positional relationship between the slider and the groove of this utility model;

[0028] Figure 5 This is a diagram showing the positional relationship between the rotating block and the first limiting groove of this utility model;

[0029] Figure 6 This is a structural diagram of the mounting plate of this utility model;

[0030] Figure 7 This is a diagram showing the positional relationship between the second limiting groove and the limiting block of this utility model;

[0031] Figure 8 This is a structural diagram of the fixing rod, the first pull rope, and the second pull rope of this utility model.

[0032] In the diagram: 1. Printing machine body; 2. Screen; 3. Support frame; 4. Slide bar; 41. Connecting block; 42. Connecting rod; 5. Mounting plate; 51. Slide groove; 52. Moving groove; 53. First limiting groove; 6. Long plate; 61. Slider; 7. Rotating block; 71. Fixed rod; 72. First spring; 73. Second limiting groove; 74. Second spring; 75. Limiting block; 76. First pull rope; 77. Second pull rope; 8. Brush head. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The embodiments of this utility model will be described below based on its overall structure.

[0035] A green printing machine for curved surface screen printing workpieces and its print head, such as Figure 1 - Figure 8 As shown, the printing press includes a printing press body 1 and a screen 2. The screen 2 is installed inside the printing press body 1. A slide bar 4 is movably installed on one side of the printing press body 1, and a connecting block 41 is movably installed on one side of the slide bar 4. A connecting rod 42 is installed at one end of the connecting block 41, and a mounting plate 5 is fixedly installed at the other end of the connecting rod 42.

[0036] Specifically, the mounting plate 5 has a groove 51 inside, and a long plate 6 is movably mounted on one side of the mounting plate 5. When the product needs to be printed with small-area graphics, the product needs to be placed on the support frame 3 below the screen 2, and the long plate 6 is moved to the top of the groove 51. A rotating block 7 is installed through the mounting plate 5, and a fixing rod 71 is fixed on one side of the rotating block 7. A first pull rope 76 is wound around the outer wall of the fixing rod 71. One end of the two sets of first pull ropes 76 is connected to a limit block 75, and one end of the limit block 75 is connected to a second spring 74 for fixing. The outer wall of the rod 71 is wrapped with a second pull rope 77. Pulling the rotating block 7 outward and rotating it loosens the first pull rope 76, and the second spring 74 restores its elasticity, thereby popping out the limiting block 75 and limiting the slider 61 to prevent it from moving downward. Then, the rotating block 7 is released, so that the rotating block 7 is limited in the first limiting groove 53. The mounting plate 5 is equipped with a second limiting groove 73. The bottom of both the mounting plate 5 and the long plate 6 are movably mounted with brush heads 8. At this point, the long plate 6 is limited to the upper end of the mounting plate 5, and the mounting plate 5 acts as the printing brush head 8 for printing.

[0037] Please see Figure 1 The screen 2 is movably connected to the inner wall of the printing machine body 1 via a slide rail. The printed pattern on the screen 2 can be transferred to the product by pulling the screen 2.

[0038] Please see Figure 1 The printing machine body 1 has a support frame 3 installed inside. The outer wall of the support frame 3 is fitted with rollers. The rollers fitted on the outer wall of the support frame 3 can make the product roll in place, so that the curved surface can also contact the screen 2 to realize curved surface printing.

[0039] Please see Figure 4 - Figure 6 A slider 61 is fixed on one side of the long plate 6, and one end of the slider 61 is larger than the groove 51. The slider 61 is larger than the groove 51, which can limit the slider 61 in the groove 51, so that the long plate 6 will not fall off and printing errors will be avoided.

[0040] Please see Figure 6 - Figure 8 The inner wall of the slide 51 is provided with a movable groove 52, and the inner wall of the movable groove 52 is in contact with the outer wall of the limiting block 75. The length of the limiting block 75 is longer than the width of the slide 51 and shorter than the length of the movable groove 52. The length of the limiting block 75 can span the slide 51, but when it is retracted, the limiting block 75 will not exceed the position of the movable groove 52. This ensures that the limiting block 75 will not shift within the movable groove 52 and avoids the problem of loosening of the limiting block.

[0041] Please see Figure 5A first limiting groove 53 is provided on one side of the slide 51, and the inner wall of the first limiting groove 53 is in contact with the outer wall of the rotating block 7. When the rotating block 7 is installed, it needs to be pulled outward until it is disengaged from the first limiting groove 53. When it needs to be fixed, the rotating block 7 is embedded into the first limiting groove 53, which can fix the position of the rotating block 7 and prevent it from rotating, thus avoiding the loosening and displacement of the limiting block 75.

[0042] Please see Figure 6 - Figure 8 Two sets of first pull ropes 76 are wound clockwise in the same direction on the outer wall of the fixed rod 71. One end of the fixed rod 71 is connected to a first spring 72. When the rotating block 7 rotates clockwise, the first pull rope 76 pulls the limiting block 75 to compress the second spring 74 inward, and the slider 61 can move freely.

[0043] Please see Figure 6 - Figure 8 Two sets of second pull ropes 77 are wound counterclockwise in the same direction around the outer wall of the fixed rod 71. One end of each set of second pull ropes 77 is connected to a limiting block 75 installed at the bottom of the slide groove 51. When the rotating block 7 rotates counterclockwise, the second pull ropes 77 pull the limiting block 75 inward to compress the second spring 74, and the slider 61 can move freely. The first pull rope 76 will relax, so that the second spring 74 at one end of the first pull rope 76 will regain its elasticity, and the limiting block 75 will move outward, which can limit the slider 61 above the slide groove 51.

[0044] The working principle of this utility model is as follows: When the product needs to be printed with small area graphics, the product needs to be placed on the support frame 3 below the screen 2. The long plate 6 is moved to the top of the slide groove 51. At this time, the rotating block 7 is pulled outward and rotated, so that the first pull rope 76 is loosened and the second spring 74 returns to its elasticity, so that the limiting block 75 is popped out, limiting the slider 61 to not move down. Then the rotating block 7 is released, so that the rotating block 7 is limited in the first limiting groove 53. At this point, the long plate 6 is limited to the upper end of the mounting plate 5. The mounting plate 5 is used as the printing brush head 8 for printing.

[0045] When the product needs to print large areas of graphics and text, the rotating block 7 needs to be rotated outwards in the opposite direction to tighten the first pull rope 76, thereby causing the limiting block 75 at the other end to retract inwards until the limiting block 75 is fully inserted into the moving groove 52. The long plate 6 then slides to the bottom of the slide groove 51, and the second pull rope 77 loosens. The second spring 74 restores its elasticity, pops out the limiting block 75, and limits the slider 61 to the bottom of the slide groove 51. The long plate 6 then acts as the printing brush head 8 for printing.

[0046] When an irregular brush head 8 is required, the middle position of the brush head 8 can be fixed to the bottom of the mounting plate 5 or the long plate 6 with bolts. At this point, the installation of the irregular brush head 8 is completed, and the subsequent printing process can continue.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A green printing machine for curved screen printing workpieces and its printing head, comprising a printing machine body (1) and a screen (2), wherein the screen (2) is installed inside the printing machine body (1), a slide rod (4) is movably installed on one side of the printing machine body (1), and a connecting block (41) is movably installed on one side of the slide rod (4), a connecting rod (42) is installed at one end of the connecting block (41), and an mounting plate (5) is fixedly installed at the other end of the connecting rod (42), characterized in that: The mounting plate (5) has a sliding groove (51) inside. A long plate (6) is movably installed on one side of the mounting plate (5). A rotating block (7) is installed through the mounting plate (5). A fixing rod (71) is fixed on one side of the rotating block (7). A first pull rope (76) is wound around the outer wall of the fixing rod (71). One end of each of the two sets of first pull ropes (76) is connected to a limit block (75), and one end of the limit block (75) is connected to a second spring (74). A second pull rope (77) is wound around the outer wall of the fixing rod (71). A second limit groove (73) is installed inside the mounting plate (5). Brush heads (8) are movably installed at the bottom of both the mounting plate (5) and the long plate (6).

2. The green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: The screen (2) is movably connected to the inner wall of the printing machine body (1) via a slide rail.

3. The green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: The printing press body (1) is equipped with a support frame (3), and the outer wall of the support frame (3) is fitted with rollers.

4. The green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: A slider (61) is fixed on one side of the long plate (6), and one end of the slider (61) is larger than the groove (51).

5. A green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: The inner wall of the slide (51) is provided with a moving groove (52), and the inner wall of the moving groove (52) is in contact with the outer wall of the limiting block (75). The length of the limiting block (75) is longer than the width of the slide (51), and the length of the limiting block (75) is shorter than the length of the moving groove (52).

6. The green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: The slide (51) has a first limiting groove (53) on one side, and the inner wall of the first limiting groove (53) is in contact with the outer wall of the rotating block (7).

7. A green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: The two sets of first pull ropes (76) are wound clockwise in the same direction around the outer wall of the fixing rod (71), and one end of the fixing rod (71) is connected to a first spring (72).

8. A green printing machine for curved surface screen printing workpieces and its printing head according to claim 1, characterized in that: Two sets of second pull ropes (77) are wound counterclockwise in the same direction on the outer wall of the fixed rod (71), and one end of each set of second pull ropes (77) is connected to a limiting block (75) installed at the bottom of the slide (51).

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