Positioning and conveying device for paper overprinting

Abstract

The utility model relates to the technical field of overprinting devices, in particular to a positioning and conveying device for paper overprinting, which can position paper left and right, prevent dislocation, clamp the paper and prevent wrinkles. Comprising a servo motor, a moving block and a lead screw, a tensioning assembly is installed on the position adjusting assembly, and a guiding assembly is installed at the right end of the top of the base. The guide assembly comprises two fixing bases, a guide shaft and a guide roller, and a positioning assembly is installed on the guide assembly.

Description

Technical Field

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

[0002] The overprinting technique is developed on the basis of the monochromatic engraving printing technique. Printing text or images in different colors on one plate is called multicolor overprinting. An overprinting device for long fiber paper disclosed in the prior art with publication number CN217170176U includes an overprinting machine body. A cleaning box is fixedly connected to the side wall of the overprinting machine body. A cleaning mechanism for cleaning dust on the fiber paper is arranged in the cleaning box. The cleaning mechanism includes a mounting plate slidably connected to the inner wall of the cleaning box. A moving component is slidably connected to the lower end of the mounting plate. A second motor is fixedly connected to the lower end of the mounting plate. The output end of the second motor is fixedly connected to a threaded rod. One end of the threaded rod away from the second motor penetrates through the moving component. Mounting shafts are rotatably connected to both inner walls of the moving component. However, when the existing overprinting device is in use, the paper will shift during the conveying process, which will cause misalignment in printing. At the same time, it is not convenient to tension the conveyed paper during use, which will cause wrinkling. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a positioning and conveying device for paper overprinting that can position the paper left and right to prevent misalignment, clamp the paper to prevent wrinkling.

[0004] A positioning and conveying device for paper overprinting of the utility model includes a base. The base is located at the front paper inlet of the printing machine. Vertical frames are fixedly installed at the front and rear ends of the left end of the top of the base. A position adjustment component is installed on the vertical frames. A tensioning component is installed on the position adjustment component. A guiding component is installed at the right end of the top of the base. A positioning component is installed on the guiding component; the guiding component guides and conveys the paper. At the same time, the positioning component can position the paper left and right, effectively preventing misalignment. When the paper passes through the tensioning component, the paper can be clamped to prevent wrinkling. At the same time, the position adjustment component can adjust the position of the transmission roller, facilitating the adjustment of the conveying height and improving the practicability.

[0005] Preferably, the position adjustment component includes a servo motor, a moving block and a lead screw. A driving cavity is opened at the bottom of the vertical frame. An adjustment chute is opened at the upper part of the vertical frame. The output end of the servo motor is connected to the lead screw. The lead screw is rotatably installed in the adjustment chute. The moving block is slidably installed in the adjustment chute, and the moving block is screwed on the outer part of the lead screw. The right side of the moving block is slidably sleeved on the right side of the servo motor; starting the servo motor to drive the lead screw to rotate can drive the moving block to move in the adjustment chute, thereby adjusting the output height of the paper and improving the practicability.

[0006] Preferably, the tensioning assembly includes two vertical frames, a sliding rod, two sets of pushing blocks, and two transmission rollers. The two vertical frames are fixedly installed at the right end of the moving block. The upper and lower ends of the vertical frames are provided with pushing chutes. The sliding rod is fixedly installed in the pushing chutes. The pushing blocks are slidably installed on the outer wall of the sliding rod and are also limitedly slidably installed in the pushing chutes. A transmission roller is rotatably installed between the front and rear pushing blocks. A spring is sleeved on the outer wall of the sliding rod. One end of the spring is connected to the pushing block, and the other end of the spring is connected to the inner wall of the pushing chute. When the paper passes between the two transmission rollers, the paper can be clamped and conveyed, preventing wrinkles from occurring. By the spring pushing the pushing block to slide on the sliding rod, the contact between the transmission rollers can be ensured, making it applicable to papers of different thicknesses.

[0007] Preferably, the guiding assembly includes two fixed seats, a guiding shaft, and a guiding roller. The two fixed seats are fixedly installed at the front and rear ends of the right end of the base. The guiding shaft is rotatably installed between the two fixed seats, and a guiding roller is fixedly installed on the outer wall of the guiding shaft. When the paper is input, it rotates and conveys on the guiding roller, reducing the friction with the base and improving the paper conveying quality.

[0008] Preferably, the positioning assembly includes a rotating rod, two moving sliders, two moving rotating rings, and an annular limiting disk. At the position corresponding to the guiding roller on the top of the base, a rotating groove is provided. The rotating rod is rotatably installed in the rotating groove. Thread grooves are symmetrically provided on the outer wall of the rotating rod in the front and rear directions. The two moving sliders are symmetrically screwed on the outer wall of the rotating rod and are also slidably installed in the rotating groove. The top of the moving slider is fixedly installed with a moving rotating ring, and an annular limiting disk is rotatably installed in the middle of the moving rotating ring. The annular limiting disk is sleeved on the outer wall of the guiding roller. Rotating the rotating rod drives the moving slider to move in the rotating groove, which can adjust the position of the moving rotating ring on the outer wall of the guiding roller. Using the moving rotating ring can position the paper left and right. The annular limiting disk is rotatably installed on the moving rotating ring, which can reduce the wear on the edge of the paper and effectively prevent the occurrence of misalignment.

[0009] Preferably, an installation groove is provided at the front end of the base. The transmission is fixed in the installation groove. The input end of the rotating rod is connected to the output end of the transmission, and the input end of the transmission is connected with a knob. Rotating the knob drives the rotating rod to rotate through the transmission, which can improve the adjustment speed, improve work efficiency, and reduce the labor intensity during operation.

[0010] Preferably, a rubber layer is installed on the outer wall of the transmission roller; the rubber layer can increase the friction between the transmission roller and the paper.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows: The paper is guided and conveyed through the guiding assembly, and at the same time, the positioning assembly can position the paper left and right, effectively preventing misalignment. When the paper passes through the tensioning assembly, the paper can be clamped to prevent wrinkles. At the same time, the position adjusting assembly can adjust the position of the transmission roller, facilitating the adjustment of the conveying height and improving the practicability. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a front view structural diagram of the present utility model;

[0014] Figure 3 is a schematic structural diagram of the position adjusting assembly of the present utility model;

[0015] Figure 4 is a partial sectional structural diagram of the present utility model;

[0016] Figure 5 is a schematic structural diagram of the positioning assembly of the present utility model;

[0017] Reference numerals in the drawings: 1, base; 2, fixed seat; 3, guide shaft; 4, guide roller; 5, vertical frame; 6, servo motor; 7, moving block; 8, lead screw; 9, vertical frame; 10, slide bar; 11, pushing block; 12, spring; 13, transmission roller; 14, rotating rod; 15, moving slider; 16, moving rotating ring; 17, annular limiting disk; 18, transmission; 19, knob; 20, rubber layer. Detailed Description of the Preferred Embodiments

[0018] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0019] Such as Figures 1 to 5As shown in the figure, the base 1 is located at the front paper inlet of the printing press. At the front and rear ends of the left end of the top of the base 1, vertical frames 5 are fixedly installed. A driving cavity is provided at the bottom of the vertical frame 5, and an adjustment chute is provided at the upper part of the vertical frame 5. The output end of the servo motor 6 is connected to a lead screw 8. The lead screw 8 is rotatably installed in the adjustment chute. A moving block 7 is slidably installed in the adjustment chute, and the moving block 7 is screwed onto the outer part of the lead screw 8. The right side of the moving block 7 is slidably sleeved on the right side of the servo motor 6. Two vertical frames 9 are fixedly installed at the right end of the moving block 7. Push chutes are provided at the upper and lower ends of the vertical frame 9. A slide bar 10 is fixedly installed in the push chute. A push block 11 is slidably installed on the outer wall of the slide bar 10, and the push block 11 is limit slidably installed in the push chute. A transmission roller 13 is rotatably installed between the front and rear push blocks 11. An adhesive layer 20 is installed on the outer wall of the transmission roller 13. A spring 12 is sleeved on the outer wall of the slide bar 10. One end of the spring 12 is connected to the push block 11, and the other end of the spring 12 is connected to the inner wall of the push chute. Two fixed seats 2 are fixedly installed at the front and rear ends of the right end of the base 1. A guide shaft 3 is rotatably installed between the two fixed seats 2. A guide roller 4 is fixedly installed on the outer wall of the guide shaft 3. A rotating groove is provided at the position of the base 1 corresponding to the guide roller 4 at the top. A rotating rod 14 is rotatably installed in the rotating groove. Thread grooves are symmetrically provided on the outer wall of the rotating rod 14 in the front and rear. Two moving sliders 15 are symmetrically screwed onto the outer wall of the rotating rod 14, and the moving sliders 15 are slidably installed in the rotating groove. A moving rotating ring 16 is fixedly installed at the top of the moving slider 15. An annular limiting disc 17 is rotatably installed in the middle of the moving rotating ring 16. The annular limiting disc 17 is sleeved on the outer wall of the guide roller 4. An installation groove is provided at the front end of the base 1. A transmission 18 is fixed in the installation groove. The input end of the rotating rod 14 is connected to the output end of the transmission 18. The input end of the transmission 18 is connected to a knob 19;

[0020] When the paper is input, it is rotated and conveyed on the guide roller 4, reducing the friction with the base 1 and improving the paper conveying quality. Rotating the rotating rod 14 drives the moving slider 15 to move in the rotating groove, which can adjust the position of the moving rotating ring 16 on the outer wall of the guide roller 4. The moving rotating ring 16 can be used to position the paper left and right. The annular limiting disc 17 is rotatably installed on the moving rotating ring 16, which can reduce the wear on the edge of the paper and effectively prevent the occurrence of misalignment. Rotating the knob 19 drives the rotating rod 14 to rotate through the transmission 18, which can improve the adjustment speed, improve work efficiency and reduce the labor intensity during operation. Starting the servo motor 6 drives the lead screw 8 to rotate, which can drive the moving block 7 to move in the adjustment chute, thereby adjusting the output height of the paper and improving the practicability. When the paper passes between the two transmission rollers 13, the paper can be clamped and conveyed, preventing the generation of wrinkles. By pushing the push block 11 to slide on the slide bar 10 through the spring 12, the contact between the transmission rollers 13 can be ensured, which is applicable to papers of different thicknesses.

[0021] As Figures 1 to 5As shown in the figure, a positioning and conveying device for paper overprinting of the present utility model, when working, when the paper is input, it rotates and conveys on the guiding roller 4 to reduce the friction with the base 1. Rotating the knob 19 drives the rotating rod 14 to rotate through the transmission 18. The rotating rod 14 drives the moving slider 15 to move in the rotating groove, and the position of the moving rotating ring 16 on the outer wall of the guiding roller 4 can be adjusted. The moving rotating ring 16 can be used to position the paper left and right. The annular limiting disc 17 is rotatably installed on the moving rotating ring 16 to reduce the wear on the edge of the paper. When the paper passes between the two transmission rollers 13, the paper can be clamped and conveyed to prevent wrinkles. By pushing the push block 11 to slide on the sliding rod 10 through the spring 12, the contact between the transmission rollers 13 can be ensured.

[0022] The servo motor 6 and the transmission 18 of a positioning and conveying device for paper overprinting of the present utility model are purchased on the market. Those skilled in the industry only need to install and operate according to the attached operation manual, without the need for creative labor of those skilled in the art.

[0023] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A positioning and conveying device for paper overprinting, characterized in that: The invention comprises a base (1), the base (1) is located at the front paper inlet of the printing machine, a stand (5) is fixedly installed at the front and rear ends of the top left end of the base (1), a position adjustment component is installed on the stand (5), a tensioning component is installed on the position adjustment component, a guide component is installed on the top right end of the base (1), and a positioning component is installed on the guide component; The position adjustment component comprises a servo motor (6), a moving block (7) and a screw (8); a driving cavity is provided at the bottom of the vertical frame (5); an adjustment slide groove is provided at the top of the vertical frame (5); the output end of the servo motor (6) is connected to the screw (8); the screw (8) is rotatably installed in the adjustment slide groove; the moving block (7) is slidably installed in the adjustment slide groove; the moving block (7) is screwed on the outside of the screw (8); the right side of the moving block (7) is slidably mounted on the right side of the servo motor (6); the tensioning component comprises two vertical frames (9), a slide rod (10), two sets of push blocks (11) and two transmission A roller (13), two vertical frames (9) are fixedly mounted on the right end of the moving block (7), a push slide groove is opened at the upper and lower ends of the vertical frame (9), a slide bar (10) is fixedly mounted in the push slide groove, a push block (11) is slidably mounted on the outer wall of the slide bar (10), and the push block (11) is limitedly slidably mounted in the push slide groove, a transmission roller (13) is rotatably mounted between the front and rear push blocks (11), a spring (12) is sleeved on the outer wall of the slide bar (10), one end of the spring (12) is connected to the push block (11), and the other end of the spring (12) is connected to the inner wall of the push slide groove.

2. A paper positioning and conveying device for overprinting as claimed in claim 1, characterized in that: The guide assembly comprises two fixed seats (2), a guide shaft (3) and a guide roller (4); the two fixed seats (2) are fixedly mounted at the front and rear ends of the right end of the base (1); the guide shaft (3) is rotatably mounted between the two fixed seats (2); and the guide roller (4) is fixedly mounted on the outer wall of the guide shaft (3).

3. A paper positioning and conveying device for overprinting as claimed in claim 2, characterized in that: The positioning assembly comprises a rotating rod (14), two movable sliders (15), two movable rotating rings (16) and an annular limiting disk (17). A rotating groove is provided at a position corresponding to the guide roller (4) at the top of the base (1). The rotating rod (14) is rotatably mounted in the rotating groove. A threaded groove is symmetrically provided on the outer wall of the rotating rod (14) in front and back directions. The two movable sliders (15) are symmetrically screwed on the outer wall of the rotating rod (14). The movable slider (15) is slidably mounted in the rotating groove. A movable rotating ring (16) is fixedly mounted on the top of the movable slider (15). An annular limiting disk (17) is rotatably mounted in the middle of the movable rotating ring (16). The annular limiting disk (17) is sleeved on the outer wall of the guide roller (4).

4. A paper positioning and conveying device for overprinting as claimed in claim 3, characterized in that: The front end of the base (1) is provided with a mounting groove, the transmission (18) is fixed in the mounting groove, the input end of the rotating rod (14) is connected to the output end of the transmission (18), and the input end of the transmission (18) is connected to a knob (19).

5. A paper positioning and conveying device for overprinting as claimed in claim 1, characterized in that: A rubber layer (20) is installed on the outer wall of the transmission roller (13).

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