Silk-screen printing screen capable of reducing excessive glue

Abstract

The utility model discloses a silk-screen printing screen capable of reducing excessive glue, and relates to the technical field of silk-screen printing. The device comprises a front frame, a rear frame is arranged on the back of the front frame, and screen cloth is arranged between the front frame and the rear frame. A tensioning assembly is arranged in an inner cavity of the rear frame and comprises a rear clamping plate, the rear clamping plate is fixedly connected to the periphery of the rear end of the inner cavity of the rear frame, first tension rollers are movably connected to the two sides of the front face of the inner cavity of the rear frame correspondingly, and second tension rollers are movably connected to the top and the bottom of the front face of the inner cavity of the rear frame correspondingly. By rotating the hand wheel, the rotating rod can drive the first tension roller to rotate, and the driving bevel gear at one end of the first tension roller drives the driven bevel gear at one end of the second tension roller to rotate, so that the first tension roller and the second tension roller tension screen cloth wound on the surface at the same time, and the surface of the screen cloth is smooth and stable; and excessive glue is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of screen printing, and particularly relates to a screen printing stencil for reducing glue overflow. Background Art

[0002] A screen printing stencil is an important tool for screen printing processes. It is usually made of a grid-like metal or plastic and has evenly distributed tiny holes. Through the pressure during printing and the grid suspended thereon, the ink paste can be transferred to the surface of the material below.

[0003] For the screen printing stencils in the prior art, which need to be reused multiple times, it is easy for the tension of the screen to be uneven or insufficient to support the pressure during printing. The ink or glue may be distorted or displaced on the screen cloth, easily causing glue overflow on the surface of the screen, resulting in blurred or unclear edges of the printed pattern or text, and affecting the overall quality and accuracy of the printed matter.

[0004] Therefore, we provide a screen printing stencil for reducing glue overflow to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a screen printing stencil for reducing glue overflow, which solves the problem that the screen printing stencil in the prior art is prone to glue overflow on the surface of the screen through the cooperation of a tensioning component and a replacement component.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a screen printing stencil for reducing glue overflow, including a front frame. A rear frame is arranged on the back of the front frame, and a screen cloth is arranged between the front frame and the rear frame;

[0008] A tensioning component is arranged in the inner cavity of the rear frame. The tensioning component includes a rear clamping plate, which is fixedly connected to the periphery of the rear end of the inner cavity of the rear frame. Both sides of the front of the inner cavity of the rear frame are movably connected with a first tension roller, and the top and bottom of the front of the inner cavity of the rear frame are movably connected with a second tension roller. The top end of the first tension roller is fixedly connected with a rotating rod;

[0009] A replacement component is arranged in the inner cavity of the rear frame. The replacement component includes a limiting box, which is fixedly connected to the periphery of the inner cavity of the rear frame. A support rod is slidably connected to the bottom of the inner cavity of the limiting box. One end of the support rod is fixedly connected with a first inclined block. A spring is sleeved on one side of the surface of the support rod, and the other end of the support rod is fixedly connected with a pull rod.

[0010] The present utility model is further configured such that one end of the first tension roller is fixedly connected to a first bevel gear, and one end of the second tension roller is fixedly connected to a second bevel gear, and the first bevel gear meshes with the second bevel gear.

[0011] The present utility model is further configured such that card strips are fixedly connected to the four peripheries of the inner cavity of the front frame, a second inclined block is fixedly connected to the back of the card strip, and the surface of the second inclined block is slidably connected to the inner cavity of the limit box.

[0012] The present utility model is further configured such that front clamping plates are fixedly connected to the four peripheries of the inner cavity of the front frame, and the rear end of the front clamping plate is slidably connected to the front end of the rear clamping plate.

[0013] The present utility model is further configured such that the top end of the rotating rod extends to the outside of the rear frame, a hand wheel is fixedly connected to the top end of the rotating rod, and a limit pin is threadedly connected to the front end of the inner cavity of the hand wheel.

[0014] The present utility model is further configured such that a limit groove is opened at the top of the front of the limit box, and the inner cavity of the limit groove is slidably connected to the surface of the second inclined block.

[0015] The present utility model is further configured such that limit plates are fixedly connected to both sides of the first inclined block, slide bars are fixedly connected to both sides of the inner cavity of the limit box, and one side of the inner cavity of the limit plate is slidably connected to the surface of the slide bar.

[0016] The present utility model is further configured such that both sides of the mesh cloth are respectively wound around the surfaces of the two first tension rollers, and the top and bottom of the mesh cloth are respectively wound around the surfaces of the two second tension rollers.

[0017] The present utility model has the following beneficial effects:

[0018] 1. By rotating the hand wheel, the present utility model can make the rotating rod drive the first tension roller to rotate, and drive the driven bevel gear at one end of the second tension roller to rotate through the driving bevel gear at one end of the first tension roller, so that the first tension roller and the second tension roller simultaneously tension the mesh cloth wound on their surfaces, making the surface of the mesh cloth flat and stable and reducing glue overflow.

[0019] 2. By pulling the pull rod, the present utility model can make the support rod drive the first inclined block to move towards one side of the inner cavity of the limit box, so that the first inclined block releases the limit on the second inclined block, facilitating the separation of the front frame and the rear frame. By moving the front frame, the card strip drives the second inclined block to separate from the inner cavity of the limit box, and then the mesh cloth wound on the surfaces of the first tension roller and the second tension roller can be taken out and replaced.

[0020] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below.

[0022] Figure 1 It is a three-dimensional structure diagram of a screen printing stencil for reducing glue overflow;

[0023] Figure 2 It is an exploded view of the front frame and the rear frame in a screen printing stencil for reducing glue overflow;

[0024] Figure 3 It is an exploded view of the internal structure of the rear frame in a screen printing stencil for reducing glue overflow;

[0025] Figure 4 It is an exploded view of the internal structure of the limit box in a screen printing stencil for reducing glue overflow.

[0026] In the accompanying drawings: 1. Front frame; 2. Rear frame; 3. Screen cloth; 4. Rear clamping plate; 5. First tension roller; 6. Second tension roller; 7. Rotating rod; 8. Limit box; 9. Support rod; 10. First inclined block; 11. Spring; 12. Pull rod; 13. First bevel gear; 14. Second bevel gear; 15. Clamping strip; 16. Second inclined block; 17. Front clamping plate; 18. Handwheel; 19. Limit plate. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be described in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Specific embodiment one

[0029] Please refer to Figures 1-4 , the present utility model is a screen printing stencil for reducing glue overflow, including a front frame 1, a rear frame 2 is arranged on the back of the front frame 1, and a screen cloth 3 is arranged between the front frame 1 and the rear frame 2; a tensioning assembly is arranged in the inner cavity of the rear frame 2, the tensioning assembly includes a rear clamping plate 4, the rear clamping plate 4 is fixedly connected to the periphery of the rear end of the inner cavity of the rear frame 2, both sides of the front of the inner cavity of the rear frame 2 are movably connected with a first tension roller 5, both the top and the bottom of the front of the inner cavity of the rear frame 2 are movably connected with a second tension roller 6, and the top end of the first tension roller 5 is fixedly connected with a rotating rod 7; a replacement assembly is arranged in the inner cavity of the rear frame 2, the replacement assembly includes a limit box 8, the limit box 8 is fixedly connected to the periphery of the inner cavity of the rear frame 2, the bottom of the inner cavity of the limit box 8 is slidably connected with a support rod 9, one end of the support rod 9 is fixedly connected with a first inclined block 10, a spring 11 is sleeved on one side of the surface of the support rod 9, and the other end of the support rod 9 is fixedly connected with a pull rod 12.

[0030] Specifically: Sealing strips are fixedly connected to the peripheries of the rear ends of the inner cavities of the front frame 1 and the peripheries of the front ends of the inner cavities of the rear frame 2, so that when the mesh cloth 3 is wound around the surfaces of the first tension roller 5 and the second tension roller 6, the rubber material will not overflow into the inner cavities of the front frame 1 and the rear frame 2. The two sides of the surfaces of the two first tension rollers 5 are respectively movably connected to the front ends of the inner cavities of the two rear clamping plates 4;

[0031] The two sides of the surfaces of the two second tension rollers 6 are respectively movably connected to the front ends of the inner cavities of the other two rear clamping plates 4. Rotating rods 7 are fixedly connected to the tops of the left first tension roller 5 and the bottoms of the right first tension roller 5. The rotating rods 7 extend to the outside of the rear frame 2. Semi-circular grooves are provided at the tops of one side and the bottoms of the other side of the inner cavities of the front frame 1 and the rear frame 2. When the two semi-circular grooves are combined, they can limit the rotating rods 7. There are four limiting boxes 8, which are symmetrically distributed in pairs. One end of the spring 11 is fixedly connected to the bottom of the first inclined block 10, and the other end is fixedly connected to the bottom of the inner cavity of the limiting box 8. The surface of the pull rod 12 is slidably connected to the bottom of the inner cavity of the limiting box 8, and the pull rod 12 is located outside the limiting box 8. Specific Embodiment Two

[0033] Please refer to Figures 1-4 , on the basis of Specific Embodiment One, a first bevel gear 13 is fixedly connected to one end of the first tension roller 5, a second bevel gear 14 is fixedly connected to one end of the second tension roller 6, the first bevel gear 13 meshes with the second bevel gear 14, clamping strips 15 are fixedly connected to the peripheries of the inner cavity of the front frame 1, a second inclined block 16 is fixedly connected to the back of the clamping strip 15, the surface of the second inclined block 16 is slidably connected to the inner cavity of the limiting box 8, front clamping plates 17 are fixedly connected to the peripheries of the inner cavity of the front frame 1, the rear ends of the front clamping plates 17 are slidably connected to the front ends of the rear clamping plates 4, the top end of the rotating rod 7 extends to the outside of the rear frame 2, a handwheel 18 is fixedly connected to the top end of the rotating rod 7, a limiting pin is threadedly connected to the front end of the inner cavity of the handwheel 18, a limiting groove is provided at the top of the front of the limiting box 8, the inner cavity of the limiting groove is slidably connected to the surface of the second inclined block 16, limiting plates 19 are fixedly connected to both sides of the first inclined block 10, sliding strips are fixedly connected to both sides of the inner cavity of the limiting box 8, and one side of the inner cavity of the limiting plate 19 is slidably connected to the surface of the sliding strip. The two sides of the mesh cloth 3 are respectively wound around the surfaces of the two first tension rollers 5, and the top and bottom of the mesh cloth 3 are respectively wound around the surfaces of the two second tension rollers 6.

[0034] Specifically: The meshing of the first bevel gear 13 and the second bevel gear 14 enables the first tension roller 5 to drive the second tension roller 6 to rotate when the first tension roller 5 rotates. The two sides of the mesh cloth 3 are respectively wound around the surfaces of the two first tension rollers 5, and the top and bottom of the mesh cloth 3 are respectively wound around the surfaces of the two second tension rollers 6. The front end of the clamping strip 15 is fixed to the inner cavity of the front frame 1, and the rear end is fixed to the front of the second inclined block 16, so as to limit the two frames through the second inclined block 16 and the first inclined block 10 after the front frame 1 and the rear frame 2 are closed;

[0035] When the front frame 1 and the rear frame 2 are closed, the four front clamping plates 17 around the inner cavity of the front frame 1 are in positive contact with the rear clamping plates 4, so as to limit the first tension roller 5 and the second tension roller 6. By rotating the handwheel 18, the tension of the mesh cloth 3 by the first tension roller 5 and the second tension roller 6 can be adjusted. The limit pin plays a role in limiting the handwheel 18. By sliding the inner side of the limit plate 19 on the surface of the slide bar, the sliding of the first inclined block 10 can be limited.

[0036] The working principle of the present utility model is as follows: When it is necessary to use the screen printing stencil for reducing glue overflow, first, before each use, the tension of the mesh cloth 3 is adjusted according to the hole size of the mesh cloth 3. The limit pin is removed, and the handwheel 18 is rotated. The handwheel 18 drives the rotating rod 7 to rotate, the rotating rod 7 drives the first tension roller 5 to rotate, the first tension roller 5 tightens both sides of the mesh cloth 3, and can drive the first bevel gear 13 to rotate. The first bevel gear 13 drives the second bevel gear 14 to rotate, the second bevel gear 14 drives the second tension roller 6 to rotate, and the second tension roller 6 tightens the top and bottom of the mesh cloth 3, so as to adjust the tension of the mesh cloth 3, make the hole size of the mesh cloth 3 uniform, and reduce the possibility of glue overflow.

[0037] When the mesh cloth 3 has been used for a long time and the hole size cannot be kept uniform by adjusting the tension, the pull rod 12 can be pulled. The pull rod 12 drives the support rod 9 to move, the support rod 9 drives the second inclined block 16 to move, and the second inclined block 16 moves away from the first inclined block 10. Then the front frame 1 is pulled, the front frame 1 drives the clamping strip 15 to move, the clamping strip 15 drives the first inclined block 10 to move, and the first inclined block 10 is in a separated state from the second inclined block 16 at this time, so that the first inclined block 10 moves out of the limit groove in the limit box 8, and the front frame 1 is separated from the rear frame 2. The mesh cloth 3 wound on the surfaces of the first tension roller 5 and the second tension roller 6 can be removed and replaced. After the replacement is completed, only the four first inclined blocks 10 are respectively aligned with the inner cavities of the four limit grooves and inserted, so that the second inclined block 16 rebounds by using the spring 11 to limit the first inclined block 10, and the work of replacing the mesh cloth 3 can be completed.

[0038] The standard parts used in the present utility model can all be purchased from the market, and can also be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a control unit. The control circuit of the control unit can be realized by simple programming of those skilled in the art, which belongs to the common general knowledge in the art. Therefore, the control method and the circuit connection are not explained in detail in the present utility model.

[0039] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model.

Claims

1. A screen printing stencil for reducing glue overflow, comprising a front frame (1), characterized in that: A rear frame (2) is provided on the back of the front frame (1), and a mesh cloth (3) is provided between the front frame (1) and the rear frame (2). A tensioning component is provided in the inner cavity of the rear frame (2). The tensioning component includes a rear clamping plate (4). The rear clamping plate (4) is fixedly connected to the periphery of the rear end of the inner cavity of the rear frame (2). Both sides of the front of the inner cavity of the rear frame (2) are movably connected with first tension rollers (5). Both the top and bottom of the front of the inner cavity of the rear frame (2) are movably connected with second tension rollers (6). A rotating rod (7) is fixedly connected to the top end of the first tension roller (5). A replacement component is provided in the inner cavity of the rear frame (2). The replacement component includes a limit box (8). The limit box (8) is fixedly connected to the periphery of the inner cavity of the rear frame (2). A support rod (9) is slidably connected to the bottom of the inner cavity of the limit box (8). One end of the support rod (9) is fixedly connected with a first inclined block (10). A spring (11) is sleeved on one side of the surface of the support rod (9). The other end of the support rod (9) is fixedly connected with a pull rod (12).

2. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: A first bevel gear (13) is fixedly connected to one end of the first tension roller (5), and a second bevel gear (14) is fixedly connected to one end of the second tension roller (6). The first bevel gear (13) meshes with the second bevel gear (14).

3. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: Clamping strips (15) are fixedly connected to the periphery of the inner cavity of the front frame (1). A second inclined block (16) is fixedly connected to the back of the clamping strip (15). The surface of the second inclined block (16) is slidably connected to the inner cavity of the limit box (8).

4. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: Front clamping plates (17) are fixedly connected to the periphery of the inner cavity of the front frame (1). The rear end of the front clamping plate (17) is slidably connected to the front end of the rear clamping plate (4).

5. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: The top end of the rotating rod (7) extends to the outside of the rear frame (2). A hand wheel (18) is fixedly connected to the top end of the rotating rod (7). A limit pin is threadedly connected to the front end of the inner cavity of the hand wheel (18).

6. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: A limit groove is opened at the top of the front of the limit box (8), and the surface of the second inclined block (16) is slidably connected to the inner cavity of the limit groove.

7. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: Limit plates (19) are fixedly connected to both sides of the first inclined block (10). Slide bars are fixedly connected to both sides of the inner cavity of the limit box (8). One side of the inner cavity of the limit plate (19) is slidably connected to the surface of the slide bar.

8. A screen printing stencil for reducing glue overflow according to claim 1, characterized in that: Both sides of the mesh cloth (3) are respectively wound around the surfaces of the two first tension rollers (5), and the top and bottom of the mesh cloth (3) are respectively wound around the surfaces of the two second tension rollers (6).

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