Printing paper tape longitudinal folding device and longitudinal folding method
By using air chamber and air film technology in the vertical folding device of the printing paper tape, combined with the arc nose plate and cone shaft design, the problem of dirty and wrinkled during the vertical folding of the paper tape is solved, and the printing quality and paper removal accuracy are improved .
Patent Information
- Application Number
- CN202411502054.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-01-10
AI Technical Summary
During the longitudinal folding process of printing paper tape, the paper often appears dirty and wrinkled, which affects the printing quality. The triangle plate of a single air chamber cannot dynamically adjust the gas volume, resulting in swing and offset when the paper tape moves.
A vertical folding device for printing paper tape including inclined triangle plates, ventilation holes, air chambers and vortex air pumps is designed. The air pressure in the air chamber is adjusted through the air circuit ball valve, forming an air film to fit the paper tape and the triangle plate, and passing through the arc-shaped nose. The plate and taper shaft ensure a stable fit and accurate folding of the paper tape.
It effectively avoids the rubbing and wrinkling of the paper tape, improves the paper-moving accuracy and printing quality, and ensures the stability and accuracy of the paper tape during longitudinal folding.
Smart Images
Figure CN119284630A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of printing production, and in particular relates to a printing paper tape longitudinal folding device and a printing paper tape longitudinal folding method. Background Art
[0002] At present, the traditional printing industry is developing rapidly, and the requirements for the quality of printed products are also constantly increasing. When the printed paper strip is folded, the function of the set square is to perform longitudinal folding, or to guide the paper when the two halves of the paper strip are put together after being cut. Under the traction of related equipment, the paper strip naturally completes the longitudinal folding along the plate surface and side edges of the set square. However, the ink layer on the surface of the paper strip cannot be completely dried. Under the action of friction, the paper will have friction contact with the set square during the longitudinal folding process, resulting in ink smearing. In order to eliminate this effect, some new set squares have introduced the function of blowing air on both sides of the set square. However, since the set square with a single air chamber cannot adjust the dynamic air volume of the paper strip, it will cause the paper strip to swing and deviate during movement, affecting the paper feeding accuracy of the paper strip and reducing the printing quality. Summary of the invention
[0003] The first object of the present invention is to provide a printed paper strip longitudinal folding device, which solves the technical problem that paper often gets stained and wrinkled during the longitudinal folding process of the existing folding machine.
[0004] A second object of the present invention is to provide a method for longitudinally folding a printed paper strip.
[0005] The first technical solution adopted by the present invention is that the printing paper strip longitudinal folding device comprises an inclined set square, on which a plurality of evenly arranged vents are opened; a sealing plate is connected to the back of the set square through a fastener, a plurality of air chambers are formed between the sealing plate and the set square, and the plurality of air chambers are respectively connected to an external air source; an arc-shaped nose plate is fixedly connected to the tip of the set square with the lowest horizontal height; It also includes a paper-touching roller and a support seat arranged at the bottom of the triangular plate. A support shaft is hinged on the support seat, and the support shaft is connected to the sealing plate; the end of the nose plate extends into the paper-touching roller.
[0006] The first technical solution of the present invention is also characterized in that: The edge of the triangle plate away from the nose plate is detachably connected with a circular shaft.
[0007] The nose plate comprises a tip, the tip extends into the paper-touching roller, the surface of the tip is in an outer arc shape, and two side walls of the tip are concentrically arranged with the paper-touching roller.
[0008] The back of the sealing plate is connected with a plurality of joints, and the plurality of joints are connected with a plurality of air chambers and an external air source.
[0009] The external air source comprises a vortex air pump, the vortex air pump is connected with a main pipe, the main pipe is connected with a plurality of air path ball valves, and the plurality of air path ball valves are respectively connected with a plurality of joints through flexible pipes.
[0010] The two oblique sides of the triangle plate are respectively fixed with cone shafts, and the diameter of the cone shafts gradually decreases along the direction approaching the nose plate.
[0011] The second technical solution adopted by the present invention is a method for longitudinal folding of a printed paper tape, which adopts the above-mentioned printed paper tape longitudinal folding device, turns on the vortex air pump, adjusts the corresponding air circuit ball valve according to the size of the air chamber, delivers high-pressure gas into the air chamber and sprays it along the vent hole to form an air film, and the paper tape is fitted with the air film on the surface of the triangular plate through the circular axis, and the two sides of the paper tape slowly move toward the nose plate along the conical axis, and then enters the paper contact roller to complete the longitudinal folding of the paper tape.
[0012] The beneficial effects of the present invention are: The printed paper tape longitudinal folding device of the present invention can finely adjust the state of the paper tape through the one-to-one correspondence between the air circuit ball valve and the air chamber, avoid smudging, and improve the paper feeding accuracy, solving the technical problem that the paper often gets smudging and wrinkled during the longitudinal folding process of the existing folding machine. The tapered shafts on the left and right sides of the triangle plate can ensure the stable fit of the paper tape before the tip of the nose plate, improve the paper feeding accuracy, and the side of the tip of the nose plate is concentric with the paper contact roller. The curved design can ensure the stable fit of the paper tape during the longitudinal folding process, further improving the quality of the printed product. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of the printing paper tape longitudinal folding device of the present invention; Figure 2 yes Figure 1 Left 12 view; Figure 3 yes Figure 1 The main view; Figure 4 It is a schematic diagram of the working state of the paper tape, the triangular plate and the paper contact roller in the longitudinal folding device of the printing paper tape of the present invention; Figure 5 It is a schematic diagram of the structure of the air chamber in the longitudinal folding device of the printing paper tape of the present invention; Figure 6 It is a schematic diagram of the positional relationship between the cone axis and the longitudinal folding point of the printed paper tape in the longitudinal folding device of the present invention; Figure 7 It is a schematic diagram of the positional relationship between the nose plate tip and the paper contact roller in the printing paper tape longitudinal folding device of the present invention; Figure 8 It is a schematic structural diagram of the tip of the nose plate in the longitudinal folding device for printing paper tape of the present invention; Fig. 9 yes Figure 1 Rear view of.
[0014] In the figure, 1. round shaft, 2. paper tape, 3. supporting shaft, 4. supporting seat, 5. paper contact roller, 6. nose plate, 601. tip, 7. tapered shaft, 8. air path ball valve, 9. main pipe, 10. joint, 11. sealing plate, 12. vortex air pump, 13. triangular plate, 14. vent, 15. air chamber. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0016] Example 1 like Figure 1-6 , Fig. 9 As shown, the printed paper tape longitudinal folding device disclosed in the present invention includes an inclined triangular plate 13, on which a plurality of evenly arranged vent holes 14 are opened; a sealing plate 11 is connected to the back of the triangular plate 13 through a fastener, a plurality of air chambers 15 are formed between the sealing plate 11 and the triangular plate 13, and the plurality of air chambers 15 are respectively connected to an external air source; an arc-shaped nose plate 6 is fixedly connected to the tip of the triangular plate 13 with the lowest horizontal height; the device also includes a paper-touching roller 5 and a support seat 4 arranged at the bottom of the triangular plate 13, a support shaft 3 is hinged on the support seat 4, and the support shaft 3 is connected to the sealing plate 11; the end of the nose plate 6 extends into the paper-touching roller 5.
[0017] In actual operation, the triangle plate 13 can be connected to the sealing plate 11 by fasteners using two triangle plates with mutually attached side walls, and a single triangle plate has five air chambers 15, and the air chambers 15 are hollow cavities. The support shaft 3 is hinged to the support seat 4. When in use, if the inclination of the triangle plate 13 needs to be adjusted, the support shaft 3 can be removed, and the triangle plate 13 can be tilted to a suitable position and then connected to the support shaft 3.
[0018] Example 2 On the basis of Example 1, the longitudinal folding device of the printed paper strip disclosed in the present invention comprises a tilted set triangle plate 13, on which a plurality of evenly arranged vent holes 14 are opened; a sealing plate 11 is connected to the back of the triangle plate 13 through a fastener, a plurality of air chambers 15 are formed between the sealing plate 11 and the triangle plate 13, and the plurality of air chambers 15 are respectively connected to an external air source; an arc-shaped nose plate 6 is fixedly connected to the tip of the triangle plate 13 with the lowest horizontal height; a paper-touching roller 5 and a support seat 4 are also provided at the bottom of the triangle plate 13, a support shaft 3 is hinged on the support seat 4, and the support shaft 3 is connected to the sealing plate 11; the end of the nose plate 6 extends into the paper-touching roller 5. The edge of the triangle plate 13 away from the nose plate 6 is detachably connected to a circular shaft 1. In an ideal state, when the triangle plate completes the function of longitudinal folding the paper strip, the paper strip completes the movement from "line" to "point" in the direction of movement, but in reality, due to the fragility of paper, the sharp tip of the triangle plate will pierce the paper, and the overly wide tip will cause the paper strip to not fit completely and produce wrinkles. Therefore, in order to ensure accurate vertical folding, it is necessary to ensure the appropriate curve transition from the left and right axes to the nose tip and the appropriate nose tip shape. Figure 7 and Figure 8 As shown, the nose plate 6 includes a tip 601, which extends into the paper-touching roller 5. The surface of the tip 601 is an outer arc shape, and the two side walls of the tip 601 are arranged concentrically with the paper-touching roller 5. The front of the tip 601 is curved, and the side of the tip of the tip 601 is concentric with the paper-touching roller 5, which can ensure that the paper tape is not affected by the tip of the tip 601 during the longitudinal folding process of the paper tape. The concentric design can also ensure that the paper tape 2 can be completely fitted in the arc gap between the tip 601 and the paper-touching roller 5. The nose plate 6 is fixed after being aligned with the set plate 13 by screws, ensuring that the cones of the cone shafts 7 on the left and right sides of the set plate 13 overlap with the cones of the nose plate 6. The gap between the nose plate 6 and the paper-touching roller 5 is adjusted by assembly to ensure that the gaps on both sides are consistent.
[0019] Example 3 On the basis of Example 2, the longitudinal folding device of the printed paper tape disclosed in the present invention comprises an inclined triangular plate 13, on which a plurality of evenly arranged vent holes 14 are opened; a sealing plate 11 is connected to the back of the triangular plate 13 through a fastener, a plurality of air chambers 15 are formed between the sealing plate 11 and the triangular plate 13, and the plurality of air chambers 15 are respectively connected to an external air source; an arc-shaped nose plate 6 is fixedly connected to the tip of the triangular plate 13 with the lowest horizontal height; and a paper-touching roller 5 and a support seat 4 are also provided at the bottom of the triangular plate 13, a support shaft 3 is hinged on the support seat 4, and the support shaft 3 is connected to the sealing plate 11; the end of the nose plate 6 extends into the paper-touching roller 5. The edge of the triangular plate 13 away from the nose plate 6 is detachably connected to a circular shaft 1. The back of the sealing plate 11 is connected to a plurality of joints 10, and the plurality of joints 10 are connected to the plurality of air chambers 15 and an external air source. The external air source includes a vortex air pump 12, and the vortex air pump 12 is connected to a main pipe 9, and the main pipe 9 is connected to a number of air circuit ball valves 8, and the number of air circuit ball valves 8 are respectively connected to a number of joints 10 through hoses. After the vortex air pump 12 is running, the compressed air can be smoothly filled into each air chamber 15. The technical problem that the triangular plate of a single air chamber cannot adjust the dynamic air volume of the paper tape in the prior art, which will cause the paper tape to swing and deviate during movement, affect the paper feeding accuracy of the paper tape, and reduce the printing quality is solved. All joints 10 are independently controlled by the corresponding air circuit ball valves 8. The vortex air pump 12 fills air into the air chamber 15 through the adjustment of the air circuit ball valve 8, and then sprays it out from hundreds of vents 14 evenly distributed on the triangular plate 13, so that a dynamically adjustable air cushion layer is formed between the cone shaft 7 on the left and right sides of the paper tape 2 and the triangular plate 13 and the triangular plate 13, reducing the friction between the two, thereby avoiding the swing and deviation of the paper tape 2 and the smearing of the ink on the paper tape 2, and improving the printing quality. Furthermore, since the sizes of the several air chambers 15 in the triangular plate 13 may not be exactly the same in practice, this problem can be avoided by individually controlling a single air chamber 15 through the air circuit ball valve 8 .
[0020] Example 4 On the basis of Example 1, the printed paper tape longitudinal folding device disclosed in the present invention includes an inclined triangular plate 13, on which a plurality of evenly arranged ventilation holes 14 are opened; a sealing plate 11 is connected to the back of the triangular plate 13 by fasteners, and a plurality of air chambers 15 are formed between the sealing plate 11 and the triangular plate 13, and the plurality of air chambers 15 are respectively connected to an external air source; an arc-shaped nose plate 6 is fixedly connected to the tip of the triangular plate 13 with the lowest horizontal height; it also includes a paper-touching roller 5 and a support seat 4 arranged at the bottom of the triangular plate 13, on which a support shaft 3 is hinged, and the support shaft 3 is connected to the sealing plate 11; the end of the nose plate 6 extends into the paper-touching roller 5. The two oblique sides of the triangular plate 13 are respectively fixedly connected with a conical shaft 7, and the diameter of the conical shaft 7 gradually decreases along the direction approaching the nose plate 6. The conical shaft 7 is conical, and in actual preparation, the tip vertex of the conical shaft 7 coincides with the longitudinal folding point of the paper tape 2, and the longitudinal folding point is as follows: Figure 6As shown in the middle I, the paper tape 2 can be stably fitted to the tip 601 of the nose plate 6. When the equipment starts working, the paper tape 2 moves downward and starts to be folded longitudinally when passing the longitudinal folding point of the nose plate 6. At the same time, the compressed air flows through each air chamber 15 and rushes out from the vent 14. The air outlet of each vent 14 is adjusted by adjusting the air path ball valve 8 to ensure that a stable air film is formed between the triangle plate 13, the cone shafts 7 on the left and right sides of the triangle plate 13, the nose plate 6 and the paper tape 2. The conical cone shaft 7 can ensure the stable fit of the paper tape 2 to the tip 601 of the nose plate 6, and improve the paper feeding accuracy. The side of the tip 601 is concentric with the paper contact roller 5, and the curved design can ensure the stable fit of the paper tape 2 during the longitudinal folding process, and further improve the paper feeding accuracy. The present invention can prevent the images and texts on the printed product from being smeared, ensure that the paper tape does not deviate, does not wrinkle or tear during the longitudinal folding process, reduce the loss rate of paper, and ensure the quality of the printed product.
[0021] The present invention also discloses a method for longitudinally folding a printed paper tape, which adopts the above-mentioned longitudinal folding device for printed paper tape, turns on the vortex air pump 12, adjusts the corresponding air circuit ball valve 8 according to the size of the air chamber 15, delivers high-pressure gas into the air chamber 15 and sprays it along the vent hole 14 to form an air film, and the paper tape 2 fits with the air film on the surface of the triangular plate 13 through the circular shaft 1, and the two sides of the paper tape 2 slowly move toward the nose plate 6 along the conical shaft 7, and then enter the paper contact roller 5 to complete the longitudinal folding of the paper tape 2.
[0022] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0023] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0024] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A device for longitudinally folding a printed paper strip, characterized in that: It comprises an inclined triangular plate (13), the triangular plate (13) being provided with a plurality of evenly arranged vent holes (14); the back of the triangular plate (13) is connected to a sealing plate (11) via a fastener, a plurality of air chambers (15) are formed between the sealing plate (11) and the triangular plate (13), and the plurality of air chambers (15) are respectively connected to an external air source; an arc-shaped nose plate (6) is fixedly connected to the tip of the triangular plate (13) at the lowest horizontal height; It also comprises a paper-touching roller (5) and a support seat (4) arranged at the bottom of the triangular plate (13); a support shaft (3) is hingedly connected to the support seat (4); the support shaft (3) is connected to the sealing plate (11); and the end of the nose plate (6) extends into the paper-touching roller (5).
2. The printing paper strip longitudinal folding device according to claim 1, characterized in that: The edge of the triangular plate (13) away from the nose plate (6) is detachably connected to a circular shaft (1).
3. The printing paper strip longitudinal folding device according to claim 2, characterized in that: The nose plate (6) comprises a tip (601), the tip (601) extends into the paper-touching roller (5), the surface of the tip (601) is in an outer arc shape, and the two side walls of the tip (601) are arranged concentrically with the paper-touching roller (5).
4. The printing paper strip longitudinal folding device according to claim 2, characterized in that: The back of the sealing plate (11) is connected to a plurality of joints (10), and the plurality of joints (10) are in communication with a plurality of air chambers (15) and an external air source.
5. The printing paper strip longitudinal folding device according to claim 4, characterized in that: The external air source comprises a vortex air pump (12), the vortex air pump (12) is connected to a main pipe (9), the main pipe (9) is connected to a plurality of air path ball valves (8), and the plurality of air path ball valves (8) are respectively connected to a plurality of joints (10) via hoses.
6. The printing paper strip longitudinal folding device according to claim 1, characterized in that: The two oblique sides of the triangular plate (13) are respectively fixedly connected with a conical shaft (7), and the diameter of the conical shaft (7) gradually decreases along the direction approaching the nose plate (6).
7. A method for longitudinally folding a printed paper strip, using the device for longitudinally folding a printed paper strip as claimed in claim 5, characterized in that: The vortex air pump (12) is turned on, and the corresponding air circuit ball valve (8) is adjusted according to the size of the air chamber (15), and the high-pressure gas is delivered to the air chamber (15) and ejected along the vent hole (14) to form an air film. The paper strip (2) is attached to the air film on the surface of the triangular plate (13) through the circular shaft (1), and the two sides of the paper strip (2) slowly move toward the nose plate (6) along the conical shaft (7), and then enter the paper contact roller (5), completing the longitudinal folding of the paper strip (2).