Positioning and conveying device for paper overprinting

Abstract

The positioning and conveying device comprises a printing box body and a conveying table, the conveying table communicates with the inlet end of the printing box body, a conveying belt is arranged on the conveying table, and a dust removal assembly for removing dust on paper is arranged between the conveying belt and the printing box body; the end, close to the printing box, of the conveying belt is provided with a conveying assembly driving paper to move towards the printing box. The device has the effects of removing dust on the surface of paper and guaranteeing the overprinting quality.

Description

Technical Field

[0001] The present application relates to the technical field of overprinting devices, and in particular to a positioning and conveying device for paper overprinting. Background Art

[0002] Paper overprinting is an important technology in the printing industry, which requires high-precision position control of the paper during the conveying process to ensure accurate alignment of patterns during multi-color printing. An efficient and precise overprinting process can not only improve the quality of printed products, but also significantly enhance production efficiency, reduce the waste rate, save costs for printing enterprises, and bring higher economic benefits. Therefore, designing a reasonable paper overprinting positioning and conveying device is crucial for improving printing quality.

[0003] Chinese Patent with Publication No. CN220844776U discloses a positioning and conveying device for paper overprinting. By setting the mutual cooperation among a sliding groove, a linkage rod, a limiting sleeve, a gear and a transmission roller, the clamping and positioning of the paper are realized, thus avoiding the situation of the paper generating wrinkles during the conveying process.

[0004] To ensure printing quality, the pre-treatment of the paper is particularly crucial. For the technology involved in the above patent, if there is dust on the surface of the paper during the transportation process, the dust particles may be embedded in the ink under the printing pressure, forming spots or defects. Dust will also form tiny protrusions on the paper surface, making the ink unable to spread evenly on the paper during printing. Therefore, there are certain deficiencies. Utility Model Content

[0005] In order to deal with the dust on the paper surface and prevent the dust from affecting the overprinting quality, the present application provides a positioning and conveying device for paper overprinting.

[0006] The positioning and conveying device for paper overprinting provided by the present application adopts the following technical solutions:

[0007] A positioning and conveying device for paper overprinting includes a printing box body and a conveying table. The conveying table is communicated with the inlet end of the printing box body. A conveyor belt is arranged on the conveying table. A dust removal assembly for removing dust from the paper is arranged between the conveyor belt and the printing box body. A transmission assembly for driving the paper to move towards the printing box body is arranged at one end of the conveyor belt close to the printing box body.

[0008] By adopting the above technical solutions, before the paper enters the printing box body, the dust removal assembly is used to remove dust from the paper, improving the cleanliness of the paper and ensuring printing quality. At the same time, the transmission assembly assists the paper to move smoothly into the printing box body, ensuring the positioning accuracy and conveying stability of the paper.

[0009] Optionally, the dust removal assembly includes a dust removal pipe, one end of the dust removal pipe is connected to a dust removal box, the interior of the dust removal box is hollow and the opening faces the conveyor table, and a pressing plate for pressing the paper is arranged around the bottom edge of the dust removal box.

[0010] By adopting the above technical solution, the blower is connected to the dust removal pipe, and the suction force provided by the blower can effectively remove dust from the paper, ensuring the printing quality. The pressing plate arranged at the edge of the pressing head can clamp the paper, ensuring the stability and dust removal effect during the dust removal process, so that the overall dust removal assembly can efficiently and stably complete the dust removal work of the paper.

[0011] Optionally, a sponge pad is arranged on the pressing plate, and the sponge pad is detachably connected to the pressing plate through a magic tape.

[0012] By adopting the above technical solution, the sponge pad arranged on the pressing plate can gently press the paper to avoid damage to the paper during the transmission process; at the same time, the sponge pad is detachably connected to the pressing plate through a magic tape, which is convenient for replacing and cleaning the sponge pad, ensuring the dust removal effect and the integrity of the paper.

[0013] Optionally, the transmission assembly includes two support seats, the two support seats are arranged on both sides of the conveyor table and are opposite to each other, a driving roller is rotatably arranged between the two support seats, and the driving roller is driven by a motor.

[0014] By adopting the above technical solution, a driving roller driven by a motor is rotatably arranged between the two support seats, realizing the smooth and efficient conveying of the paper into the printing box body, ensuring the accuracy and quality of the paper overprint, and the paper moves through the driving roller.

[0015] Optionally, two sliding grooves are opened in the vertical direction along the lower edge of the conveyor table, the two sliding grooves are oppositely arranged on both sides of the conveyor table, sliders are slidably arranged in the two sliding grooves, a transmission roller is rotatably arranged between the two sliders, the upper surface of the transmission roller is higher than the top surface of the conveyor table, and springs are fixedly arranged at both ends of the transmission roller, and the other ends of the springs are connected to the lower part of the conveyor table.

[0016] By adopting the above technical solution, the sliders slidably arranged in the two sliding grooves opened in the vertical direction along the lower edge of the conveyor table can jointly rotatably arrange the transmission roller, and the upper surface of the transmission roller is higher than the top surface of the conveyor table, so that the paper can be effectively supported and lifted during the transmission process, avoiding deviation or jamming caused by direct contact with the conveyor table; in addition, the floating setting of the transmission roller can adjust the tension of the paper. When the paper tension is too large, it will press the transmission roller to move downward; when the paper tension is small, the transmission roller rises to adjust the tension of the paper. Thus, the stability of the paper movement is ensured.

[0017] Optionally, a guiding groove for guiding the moving direction of the paper is formed on the conveying table, one end of the guiding groove communicates with the driving roller, and the other end of the guiding groove communicates with the inlet of the printing box body.

[0018] By adopting the above technical solution, the guiding groove formed on the conveying table can effectively limit the moving direction of the paper, improve the stability of the paper during the conveying process, reduce the deviation, and further improve the overprint accuracy of the paper.

[0019] Optionally, an auxiliary roller is rotatably arranged at one end of the conveying table close to the printing box body.

[0020] By adopting the above technical solution, when the front end of the paper passes through the dust removal pipe, the auxiliary roller can effectively help the paper to smoothly transition into the printing box body, reduce the deviation of the paper when entering the printing box body, provide forward power, and improve the overprint accuracy.

[0021] Optionally, a photoelectric sensor for controlling the synchronous operation of the auxiliary roller and the transmission component is arranged on the conveying table.

[0022] By adopting the above technical solution, when the end of the paper moves to the driving roller, the photoelectric sensor senses the paper signal, thereby synchronously driving the rotation of the roller and the auxiliary roller, controlling the running speed of the paper, realizing the precise positioning and conveying of the paper, and improving the subsequent overprint accuracy and efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up the dust removal component, the negative pressure provided by the fan is transmitted to the paper through the dust removal pipe to assist in cleaning the paper surface; the design of the pressing plate and the pressing head can effectively fix the position of the paper and improve the cleaning efficiency; by setting up the sponge pad, the paper can be gently pressed to avoid damage to the paper during the transmission process; at the same time, the sponge pad is detachably connected to the pressing plate through the magic tape, which is convenient for replacing and cleaning the sponge pad to ensure the dust removal effect and the integrity of the paper;

[0025] 2. By setting up the driving roller, the sliding groove, the slider and the spring, the paper can be effectively supported and lifted during the conveying process, avoiding deviation or jamming caused by direct contact with the conveying table; in addition, the driving roller is floatingly arranged to adjust the tension of the paper. When the paper tension is too large, it will press the driving roller to move downward; when the paper tension is small, the driving roller rises to adjust the tension of the paper. Thereby ensuring the stability of the paper movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present application.

[0027] Figure 2 is a sectional view of the dust removal box structure in the embodiment of the present application.

[0028] Figure 3 It is a cross-sectional view of the transfer table and the drive roller structure in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the photoelectric sensor in the embodiment of the present application.

[0030] Explanation of reference numerals: 1, transfer table; 2, printing box body; 3, guide groove; 4, auxiliary roller; 5, dust removal pipe; 6, dust removal box; 7, fan; 8, pressing plate; 9, magic tape; 10, sponge pad; 11, support seat; 12, drive roller; 13, motor; 14, chute; 15, slider; 16, drive roller; 17, spring; 18, conveyor belt; 19, photoelectric sensor. Detailed implementation manners

[0031] The following further describes the present application in detail Figures 1-4 in conjunction with the accompanying drawings.

[0032] An embodiment of the present application discloses a positioning and conveying device for paper overprinting. Refer to Figure 1 , a positioning and conveying device for paper overprinting includes a transfer table 1, a printing box body 2 is arranged at one end of the transfer table 1, and the transfer table 1 is communicated with the inlet end of the printing box body 2. A guide groove 3 is opened on the transfer table 1 and close to the inlet end of the printing box body 2 and is communicated with the printing box body 2. The two sides of the guide groove 3 are close to the two sides of the transfer table 1 and are arranged opposite to the inlet of the printing box body 2. The side wall of the guide groove 3 is used to guide and direct the movement of the paper.

[0033] Refer to Figure 1 , an auxiliary roller 4 for feeding the paper into the printing box body 2 is arranged on the transfer table 1. The auxiliary roller 4 is arranged along the width direction of the transfer table 1 and is arranged above the guide groove 3.

[0034] Refer to Figure 1 and Figure 2 , a dust removal assembly for removing dust from the surface of the paper is arranged on the side of the auxiliary roller 4 away from the printing box body 2. The dust removal assembly includes a dust removal pipe 5. One end of the dust removal pipe 5 is connected to the top of the printing box body 2 through a fan 7, and the other end is connected to a dust removal box 6. The interior of the dust removal box 6 is centrally controlled and the opening faces the surface of the transfer table 1. A pressing plate 8 is arranged around the bottom end of the dust removal box 6 along the edge. A sponge pad 10 is adhered to the upper surface of the pressing plate 8 through a magic tape 9, and the bottom surface of the pressing plate 8 is covered by the sponge pad 10 to gently press and hold the paper to prevent damage to the paper.

[0035] Refer to Figure 1, a transmission assembly for driving the paper to move towards the printing box body 2 is arranged on the transfer table 1. The transmission assembly includes two support seats 11 which are oppositely arranged on both sides of the transfer table 1. A driving roller 12 is rotatably arranged between the two support seats 11, and a motor 13 is arranged on one of the support seats. The driving roller 12 is driven by the motor 13.

[0036] Refer to Figure 1 , Figure 3 and Figure 4 , two sliding grooves 14 are formed on the transfer table 1 between the driving roller 12 and the auxiliary roller 4. The two sliding grooves 14 are oppositely arranged on both sides of the transfer table 1 and are vertically arranged. Sliders 15 are slidably arranged in the two sliding grooves 14. A transmission roller 16 is rotatably arranged between the two sliders 15. The other end of the guide groove 3 is communicated with the transmission roller 16. In the initial state, the upper surface of the transmission roller 16 is higher than the top surface of the transfer table 1. Springs 17 are fixedly arranged at both ends of the transmission roller 16, and the other ends of the springs 17 are connected to the lower part of the transfer table 1. The driving roller 12 and the auxiliary roller 4 drive the paper to move. When the paper is between the driving roller 12 and the auxiliary roller 4, there will be tension in the paper. Excessive paper tension will press the transmission roller 16 to move downward; when the paper tension is small, the transmission roller 16 rises to adjust the paper tension. Thus, the stability of the paper movement is ensured;

[0037] One end of the transfer table 1 away from the printing box body 2 is provided with a conveyor belt 18. A photoelectric sensor 19 is also arranged on one side of the transmission roller 16. When the paper passes through the driving roller 12 from the conveyor belt 18 and moves to the transmission roller 16, the photoelectric sensor 19 senses the paper signal, so as to synchronize the rotation of the driving roller and the auxiliary roller 4, control the running speed of the paper, realize the precise positioning and conveying of the paper, and improve the subsequent overprinting accuracy and efficiency.

[0038] The implementation principle of the positioning and conveying device for paper overprinting in the embodiment of the present application is as follows: The paper enters the transfer table 1 from the conveyor belt 18. By arranging the dust removal pipe 5 and the dust removal box 6, the dust and impurities on the surface of the paper can be effectively removed before the paper enters the printing box body 2, ensuring the cleanliness of the paper surface. By arranging the sponge pad 10 on the pressing plate 8, the paper can be gently pressed to avoid damage to the paper during the transmission process. In addition, by the combined use of the driving roller 12 and the guide groove 3, the precise positioning of the paper during the transmission process can be ensured, further improving the printing quality;

[0039] When the paper is between the driving roller 12 and the auxiliary roller 4, since the sliders 15 and the springs 17 are arranged on both sides of the transmission roller 16, excessive paper tension at this time will press the transmission roller 16 to move downward; when the paper tension is small, the transmission roller 16 rises to realize the adjustment of the paper tension. Thus, the stability of the paper movement is ensured, and at the same time, the paper is prevented from being wrinkled;

[0040] Through the introduction of the photoelectric sensor 19, the position of the paper can be sensed when the paper moves to the driving roller 16, ensuring that the driving roller 12 and the auxiliary roller 4 can rotate synchronously during the paper transportation process, thereby achieving the precise transportation of the paper.

[0041] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A positioning and conveying device for paper overprinting, comprising a printing box body (2) and a conveying table (1), characterized in that, The transfer table (1) is communicated with the inlet end of the printing box body (2). A conveyor belt (18) is arranged on the transfer table (1). A dust removal assembly for removing dust from the paper is arranged between the conveyor belt (18) and the printing box body (2). A transmission assembly for driving the paper to move towards the printing box body (2) is arranged at one end of the conveyor belt (18) close to the printing box body (2).

2. The positioning and conveying device for paper overprinting according to claim 1, wherein, The dust removal assembly includes a dust removal pipe (5). One end of the dust removal pipe (5) is connected with a dust removal box (6). The inside of the dust removal box (6) is hollow and the opening faces the transfer table (1). A pressing plate (8) for pressing the paper is arranged around the bottom edge of the dust removal box (6).

3. The positioning and conveying device for paper overprinting according to claim 2, characterized in that, A sponge pad (10) is arranged on the pressing plate (8). The sponge pad (10) is detachably connected to the pressing plate (8) through a magic tape (9).

4. A positioning and conveying device for paper overprinting according to claim 1, characterized in that, The transmission assembly includes two support seats (11). The two support seats (11) are arranged on both sides of the transfer table (1) and are oppositely arranged. A driving roller (12) is rotatably arranged between the two support seats (11). The driving roller (12) is driven by a motor (13).

5. A positioning and conveying device for paper overprinting according to claim 1, characterized in that, Two sliding grooves (14) are vertically formed in the lower edge of the transfer table (1). The two sliding grooves (14) are oppositely arranged on both sides of the transfer table (1). Sliders (15) are slidably arranged in the two sliding grooves (14). A transmission roller (16) is rotatably arranged between the two sliders (15). The upper surface of the transmission roller (16) is higher than the top surface of the transfer table (1). Springs (17) are fixedly arranged at both ends of the transmission roller (16). The other ends of the springs (17) are connected to the lower part of the transfer table (1).

6. The positioning and conveying device for paper overprinting according to claim 5, characterized in that, A guiding groove (3) for guiding the moving direction of the paper is formed in the transfer table (1). One end of the guiding groove (3) is communicated with the transmission roller (16). The other end of the guiding groove (3) is communicated with the inlet of the printing box body (2).

7. A positioning and conveying device for paper overprinting according to claim 1, characterized in that, An auxiliary roller (4) is rotatably arranged at one end of the transfer table (1) close to the printing box body (2).

8. A positioning and conveying device for paper overprinting according to claim 7, characterized in that, A photoelectric sensor (19) for controlling the synchronous operation of the auxiliary roller (4) and the transmission assembly is arranged on the transfer table (1).

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