Paper pressing device based on printing machine

Abstract

The utility model relates to the technical field of printing machines, and discloses a printing machine-based paper pressing device which comprises a shell seat, a paper clamping shell is arranged at the top of the shell seat, a first motor is arranged on the left side of the top of the shell seat, and a rotor of the first motor is coaxially connected with a lead screw; a lead screw is inserted into the mounting block through a bearing, and moving blocks are rotationally connected to the left side and the right side of the lead screw; and the cross beams are connected to the middle positions of the front sides of the moving blocks, the bottoms of the cross beams are connected with assembling blocks correspondingly, bolts are inserted into the left sides and the right sides of the interiors of the assembling blocks correspondingly, and pressing rollers are installed at the bottom ends of the bolts correspondingly. According to the paper pressing device based on the printing machine, the second motor drives the lead screw to rotate, so that the moving block can synchronously expand outwards, paper is smoothed through the synchronously-expanded pressing roller, wrinkles and unevenness of the paper are eliminated, and more smooth pressing and conveying of the paper are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, and specifically relates to a paper pressing device for a printing machine. Background Technique

[0002] A printing machine is a mechanical device used to transfer text, pictures or other design patterns from an original manuscript or electronic document to media such as paper, fabric, plastic, etc. Its working principle usually involves the physical contact between the graphic carrier (printing plate) and the printing substrate. By applying ink or other printing materials, and using pressure and / or heating and other methods to transfer the pattern to the printing substrate. The main function of the paper pressing device on the printing machine is to ensure that the paper is flat and wrinkle-free when passing through the printing unit, so that the ink can be evenly transferred to the paper.

[0003] Common paper pressing devices for printing machines include a driving mechanism and a paper pressing mechanism. When in use, the driving mechanism such as a motor, a lead screw or a cylinder drives the up and down movement of a pressing plate or a roller, so that the paper can be flattened. However, since the pressing plate or the roller can only move up and down in this way, only the paper can be vertically flattened. When the paper is wrinkled, vertical flattening is likely to make the wrinkles more obvious, resulting in poor pressing quality of the paper and not meeting the working requirements of the paper pressing of the printing machine. For this reason, a paper pressing device for a printing machine is proposed. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a paper pressing device for a printing machine to solve the technical problem that only the paper can be vertically flattened, and when the paper is wrinkled, vertical flattening is likely to make the wrinkles more obvious.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A paper pressing device for a printing machine, comprising:

[0008] A housing base, on the top of which a paper cartridge is installed. A first motor is installed on the left side of the top of the housing base, and the rotor of the first motor is coaxially connected to a lead screw, and a slider is screwed on the outside of the lead screw;

[0009] An assembly frame is connected to the front of the slider. An installation block is inserted in the middle position inside the assembly frame. A lead screw is inserted through the installation block by means of a bearing. Moving blocks are screwed on both the left and right sides of the lead screw;

[0010] The cross beam is connected to the middle position of the front side of the moving block. Assembly blocks are connected to the bottom of the cross beam. Plug pins are inserted into the left and right sides inside the assembly blocks. Press rollers are installed at the bottom ends of the plug pins. The left end of the assembly frame is connected to a second motor through a support bracket.

[0011] Preferably, a chute is provided at the middle position on the left side of the housing base. The chute is in a T-shaped configuration. A T-shaped frame is inserted into the chute, and the right end of the T-shaped frame is connected to the corresponding position on the left side of the slider, enhancing the stability of the slider during up and down movement.

[0012] Preferably, the threads on both the left and right sides of the lead screw are reverse to each other. The right end of the lead screw is connected to the corresponding position inside the cavity of the assembly frame through a ball bearing. The reverse threads on both sides of the lead screw enable the moving block to move in opposite directions when the lead screw rotates.

[0013] Preferably, the lengths of the press rollers are greater than the paper jam. The left and right ends of the press rollers are rounded at the edges. The press rollers are made of a metal material with a smooth outer circumference, avoiding scratches or indentations on the paper.

[0014] Preferably, clamping plates are inserted into the inside of the assembly blocks. The outer sides of the clamping plates are arc-shaped. Through holes are provided at the left and right sides inside the clamping plates and the assembly blocks corresponding to the plug pins, facilitating the insertion of the plug pins.

[0015] Preferably, springs are connected to the inner sides of the clamping plates. The inner ends of the springs are connected to the corresponding positions inside the assembly blocks. The number of springs is 4 - 8 groups. Rubber pads are laid inside the through holes. By pressing the clamping plates to align the through holes, the insertion of the plug pins can be achieved. After releasing the clamping plates, the clamping plates can clamp the plug pins under the action of the springs, facilitating the replacement of press rollers with different diameters and enhancing the adaptability of the paper pressing device.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present utility model provides a paper pressing device for a printing machine, having the following beneficial effects:

[0018] For the paper pressing device for a printing machine, by driving the rotation of the lead screw through the second motor, the moving blocks can be synchronously expanded outward. After the first motor drives the lead screw to rotate, enabling the slider and the assembly frame to drive the press rollers to press on the paper surface, the press rollers that expand outward synchronously can smooth the paper, simulating the action of manually flattening the paper. Using the midpoint of the press roller as a fulcrum, pressure is applied to both sides to help eliminate wrinkles and unevenness of the paper, contributing to more smooth pressing and transmission of the paper, reducing printing defects caused by uneven paper, and enhancing the use quality of the paper pressing device. Description of the Drawings

[0019] Figure 1 This is a schematic structural view of the present utility model;

[0020] Figure 2 This is a schematic structural view of the first motor and the lead screw of the present utility model;

[0021] Figure 3 This is a schematic structural view of the assembly frame and the cross beam of the present utility model;

[0022] Figure 4 This is a schematic internal structural view of the assembly frame of the present utility model;

[0023] Figure 5 This is a schematic structural view of the cross beam and the assembly block of the present utility model;

[0024] Figure 6 This is a schematic cross-sectional structural view of the assembly block of the present utility model.

[0025] In the figure: 1. Outer shell base; 2. Paper jam; 3. First motor; 4. Lead screw; 5. Slide block; 6. Assembly frame; 7. Second motor; 8. Mounting block; 9. Screw rod; 10. Moving block; 11. Cross beam; 12. Assembly block; 13. Clamping plate; 14. Through hole; 15. Plug pin; 16. Pressing roller; 17. Spring; 18. Chute; 181. T-shaped frame. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model provides a technical solution, a paper pressing device for a printing machine, including an outer shell base 1, a paper jam 2, a first motor 3, a lead screw 4, a slide block 5, an assembly frame 6, a second motor 7, a mounting block 8, a screw rod 9, a moving block 10, a cross beam 11, an assembly block 12, a clamping plate 13, a through hole 14, a plug pin 15, a pressing roller 16, a spring 17, a chute 18 and a T-shaped frame 181:

[0028] Please refer to Figure 1 , a paper jam 2 is installed on the top of the outer shell base 1. Please refer to Figure 2 , a first motor 3 is installed on the left side of the top of the outer shell base 1, and the rotor of the first motor 3 is coaxially connected to a lead screw 4. A slide block 5 is screwed on the outside of the lead screw 4. A chute 18 is opened at the middle position on the left side of the outer shell base 1, and the shape of the chute 18 is set to be T-shaped. Please refer to Figure 3, a T-shaped frame 181 is inserted inside the chute 18, and the right end of the T-shaped frame 181 is connected to the corresponding position on the left side of the slider 5;

[0029] An assembly frame 6 is connected to the front of the slider 5. Please refer to Figure 4 , an installation block 8 is inserted at the middle position inside the assembly frame 6, a lead screw 9 is inserted inside the installation block 8 through a bearing, and moving blocks 10 are screwed on both the left and right sides of the lead screw 9;

[0030] A cross beam 11 is connected to the middle position on the front side of the moving block 10. Please refer to Figure 5 , assembly blocks 12 are connected to the bottom of the cross beam 11. Plug pins 15 are inserted into both the left and right sides inside the assembly blocks 12. Pressure rollers 16 are installed at the bottom ends of the plug pins 15. A second motor 7 is connected to the left end of the assembly frame 6 through a support. The threads on both the left and right sides of the lead screw 9 are set in opposite directions. The right end of the lead screw 9 is connected to the corresponding position inside the cavity of the assembly frame 6 through a ball bearing. The lengths of the pressure rollers 16 are all greater than the paper jam 2. The edges at both the left and right ends of the pressure rollers 16 are rounded. The pressure rollers 16 are made of a metal material with a smooth outer circumference. By driving the rotation of the lead screw 9 by the second motor 7, the moving blocks 10 can be synchronously expanded outward. After the first motor 3 drives the lead screw 4 to rotate, the slider 5 and the assembly frame 6 drive the pressure rollers 16 to press on the paper surface, and the paper can be smoothed by the synchronously expanded pressure rollers 16, so that the action of manually flattening the paper can be simulated. Taking the midpoint of the pressure roller 16 as the fulcrum, pressure is applied to both sides to help eliminate the wrinkles and unevenness of the paper, which helps to achieve smoother pressing and transmission of the paper, reduce printing defects caused by uneven paper, and improve the use quality of the paper pressing device;

[0031] Please refer to Figure 6 , clamping plates 13 are inserted into the assembly blocks 12. The outer sides of the clamping plates 13 are arc-shaped. Through holes 14 are opened at the positions corresponding to the plug pins 15 on both the left and right sides inside the clamping plates 13 and the assembly blocks 12. Springs 17 are connected to the inner sides of the clamping plates 13. The inner ends of the springs 17 are connected to the corresponding positions inside the assembly blocks 12. The number of the springs 17 is 4 - 8 groups. Rubber pads are laid inside the through holes 14. By pressing the clamping plates 13, the through holes 14 can be aligned, and then the insertion of the plug pins 15 can be realized. After releasing the clamping plates 13, the clamping plates 13 can clamp the plug pins 15 under the action of the springs 17, which facilitates the replacement of the pressure rollers 16 with different diameters and improves the adaptability of the paper pressing device.

[0032] In this solution, the rotation of the lead screw 9 is driven by the second motor 7, so that the moving block 10 can expand outward synchronously. After the first motor 3 drives the lead screw 4 to rotate, the slider 5 and the assembly frame 6 drive the pressure roller 16 to press on the surface of the paper. Then, the paper is smoothed by the synchronously expanding pressure roller 16, so that the action of manually flattening the paper can be simulated. With the midpoint of the pressure roller 16 as the fulcrum, pressure is applied to both sides to help eliminate the wrinkles and unevenness of the paper, which is conducive to achieving smoother pressing and conveying of the paper, reducing printing defects caused by uneven paper, improving the use quality of the paper pressing device. At the same time, by pressing the clamping plate 13, the through holes 14 can be aligned, and then the insertion of the bolt 15 can be realized. After releasing the clamping plate 13, the clamping plate 13 can clamp the bolt 15 under the action of the spring 17, which facilitates the replacement of the pressure roller 16 with different diameters and improves the adaptability of the paper pressing device.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paper pressing device for a printing press, characterized in that: include: A housing seat (1), a paper card housing (2) is mounted on the top of the housing seat (1), a first motor (3) is mounted on the left side of the top of the housing seat (1), and a lead screw (4) is coaxially connected to the rotor of the first motor (3), and a slider (5) is screwed to the outside of the lead screw (4); An assembly frame (6) is connected to the front part of the slide block (5), a mounting block (8) is inserted in the middle position of the assembly frame (6), a screw rod (9) is inserted in the interior of the mounting block (8) through a bearing, and moving blocks (10) are screwed to the left and right sides of the screw rod (9); A crossbeam (11) is connected to the middle position of the front side of the moving block (10); the bottom of the crossbeam (11) is connected to an assembly block (12); latches (15) are inserted into the left and right sides of the assembly block (12); a pressure roller (16) is installed at the bottom end of the latches (15); and the left end of the assembly frame (6) is connected to a second motor (7) via a tripod.

2. A paper pressing device for a printing press according to claim 1, characterized in that: A slide groove (18) is provided at the middle position on the left side of the housing seat (1), and the slide groove (18) is T-shaped. A T-shaped frame (181) is inserted inside the slide groove (18), and the right end of the T-shaped frame (181) is connected to the corresponding position on the left side of the slider (5).

3. The paper pressing device for a printing press according to claim 1, characterized in that: The threads on the left and right sides of the screw rod (9) are arranged in opposite directions to each other, and the right end of the screw rod (9) is connected to the corresponding position of the inner cavity of the assembly frame (6) through a ball bearing.

4. The paper pressing device for a printing press according to claim 1, characterized in that: The length of the pressure roller (16) is greater than that of the paper jam shell (2), the left and right edges of the pressure roller (16) are both rounded, and the pressure roller (16) is made of a metal material with a smooth outer circumference.

5. The paper pressing device for a printing press according to claim 1, characterized in that: A clamping plate (13) is inserted inside the assembly block (12), and the outer side of the clamping plate (13) is arranged in an arc shape. Through holes (14) are provided at positions corresponding to the latch pins (15) on the left and right sides of the inside of the clamping plate (13) and the assembly block (12).

6. The paper pressing device for a printing press according to claim 5, characterized in that: The inner side of the clamping plate (13) is connected to a spring (17), the inner end of the spring (17) is connected to the corresponding position inside the assembly block (12), the number of the springs (17) is 4-8 groups, and the inside of the through hole (14) is paved with a rubber pad.

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