A paper curling prevention device for a paper delivery unit of a papermaking machine

Abstract

The utility model discloses a kind of paper machine paper placing part paper buckling prevention devices, including the pneumatic type pressure rod assembly of being set in the inside of paper machine paper placing part side base plate;And adjustable guide structure is set in the inside of paper machine paper placing part side base plate and is above conveying roller;The paper buckling prevention device of the application of paper machine paper placing part ingeniously solves the problem that paper enters paper machine paper placing part after front end buckling, paper end is flattened by pressing action, the smoothness of paper paper is guaranteed, avoid the production interruption caused by paper jam, no paper etc. Simultaneously, the improvement of paper flatness makes the composite quality be significantly improved;And the cooperation of adjustable guide structure, can adapt to paper of different size specifications, provide accurate orientation limit for it, ensure that paper and backboard accurately fit, further enhance the stability of paper conveying and the precision of composite, improve the overall quality of product.

Description

Technical Field

[0001] This utility model belongs to the field of paper-making machine technology, specifically relating to a paper-feeding section anti-paper-tilting device for a paper-making machine. Background Technology

[0002] In the modern printing and packaging industry, paper laminating machines, as a key fully automated piece of equipment, play a vital role in precisely laminating multiple sheets of paper into one. They are widely used in the production of various high-end printed materials, packaging boxes, and labels. Paper laminating machines have a high degree of automation, which can significantly improve production efficiency, ensure product quality consistency, and meet the needs of large-scale industrial production. In the actual operation of paper laminating machines, the paper feeding section is the starting point of the entire production process, and its performance directly affects the quality and efficiency of subsequent lamination processes. Currently, although the paper feeding sections of commonly available paper laminating machines have basic paper feeding and conveying functions in their structural design, they still have significant shortcomings in dealing with some practical production problems.

[0003] Specifically, due to the limitations of the structure and operating principle of the paper-making machine itself, when the paper-making machine performs transverse paper feeding operation in the paper feeding section, the front end of the paper is prone to warping. This problem mainly stems from the influence of various factors on the paper during the conveying process, such as the material characteristics of the paper itself (such as the stiffness and moisture content of the paper), the uneven surface friction of the conveying rollers, and the vibration during machine operation. The warping of the front end of the paper will lead to a series of consequences, such as low paper flatness, blockage, and paper not being produced, which will cause production interruption and reduce the efficiency of the subsequent die-cutting machine. Therefore, this utility model proposes a paper warping prevention device for the paper feeding section of the paper-making machine. Utility Model Content

[0004] The purpose of this invention is to provide a paper-prevention device for the paper feeding section of a paper assembler, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a paper-feeding section anti-paper-tilting device for a paper-folding machine, comprising... The pneumatic pressure bar assembly installed on the inner side of the paper feeding section side base plate of the paper assemblies includes a top beam fixed between the two paper feeding section side base plates of the paper assemblies, a cylinder fixed on the top of the top beam, a pressure bar slidably installed on the front surface of the back plate, and a foot switch installed at the bottom of the paper feeding section side base plate of the paper assemblies, with the piston rod at the bottom of the cylinder connected to the pressure bar. And an adjustable guide structure located inside the paper feeding section side plate of the paper machine and above the conveyor roller.

[0006] Preferably, the adjustable guide structure includes two guide plates symmetrically arranged above the conveyor roller, two guide struts symmetrically fixed between the two paper feeding section side base plates of the paper assemblies and passing through the surface of the guide plates, a double-ended screw rotatably installed between the two paper feeding section side base plates of the paper assemblies and passing through the surface of the guide plates, a motor fixed to the outer surface of the paper feeding section side base plate of the paper assemblies and whose output end is connected to one end of the double-ended screw, and a nut sleeve fixed to the surface of the guide plates and threadedly connected to the double-ended screw.

[0007] Preferably, the nut sleeve is embedded in the top of the guide plate, and the double-ended lead screw passes through the nut sleeve and is threadedly connected to the nut sleeve.

[0008] Preferably, the thread directions at both ends of the double-ended lead screw are opposite.

[0009] Preferably, the pneumatic pressure bar assembly further includes a rubber strip, and the rubber strip is installed on the bottom surface of the pressure bar.

[0010] Preferably, the top surface of the rubber strip is provided with multiple integrated U-shaped inserts, and both sides of the U-shaped inserts are provided with integrated side clips. The bottom surface of the pressure rod is provided with multiple connecting slots for inserting the U-shaped inserts, and both sides of the inner wall of the connecting slot are provided with side slots for the side clips to be inserted. The U-shaped inserts are inserted into the connecting slots, and the side clips are inserted into the side slots.

[0011] Preferably, the cross-section of the side block is a right-angled triangle or a semi-circle.

[0012] Preferably, the cylinder is equipped with a solenoid valve, and the foot switch is connected to the solenoid valve through an electrical control circuit.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The anti-paper warping device of the paper feeding section of the paper press of this application cleverly solves the problem of the front end of the paper warping after entering the paper feeding section of the paper press. By pressing down, the front end of the paper is flattened, ensuring the smoothness of paper output and avoiding production interruptions caused by paper blockage or non-paper output, effectively improving production efficiency and the efficiency of the subsequent die-cutting machine; at the same time, the improvement of paper flatness significantly improves the lamination quality, reduces the occurrence of defects such as wrinkles and bubbles, lowers the product defect rate, and saves production costs; and the use of the adjustable guide structure can adapt to paper of different sizes and specifications, providing precise guide limits to ensure accurate adhesion between the paper and the backing plate, further enhancing the stability of paper feeding and the accuracy of lamination, and improving the overall quality of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1A magnified view of a portion of region A in the middle; Figure 3 This utility model Figure 1 A magnified view of a portion of region B in the middle; Figure 4 This is a cross-sectional view of the connection between the rubber strip and the pressure bar of this utility model; Figure 5 This is a perspective view of the U-shaped insert of this utility model; In the diagram: 1. Top beam; 2. Cylinder; 21. Piston rod; 3. Pressure rod; 31. Rubber strip; 311. U-shaped insert; 312. Side locking block; 32. Connecting slot; 321. Side slot; 4. Paper feed section side base plate of the paper assembler; 41. Conveyor roller; 42. Back support bar; 43. Backing plate; 5. Foot switch; 61. Guide support rod; 62. Double-ended lead screw; 63. Guide plate; 64. Motor; 65. Nut sleeve. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1 Please see Figures 1 to 3 This is the first embodiment of the present utility model, which provides the following technical solution: a paper feeding section anti-paper warping device for a paper assemblies, comprising... The pneumatic pressure bar assembly installed inside the paper feeding section side base plate 4 of the paper assemblies includes a top beam 1 fixed between the two paper feeding section side base plates 4 of the paper assemblies, a cylinder 2 fixed on the top of the top beam 1, a pressure bar 3 slidably installed on the front surface of the back plate 43, and a foot switch 5 installed at the bottom of the paper feeding section side base plate 4 of the paper assemblies. The piston rod 21 at the bottom of the cylinder 2 is connected to the pressure bar 3. Multiple back plates 43 are installed on the front surface of the back support bar 42. When the paper is fed into the paper feeding section of the paper assemblies, after the paper is conveyed by the conveyor roller 41 to contact the back plate 43 and receive support, the operator can step on the foot switch 5 to make the cylinder 2 run, causing the piston rod 21 to push the pressure bar 3 down. The pressure bar 3 can flatten the curved part at the front end of the paper, preventing the curved front end of the paper from affecting the subsequent processing efficiency. The cylinder 2 and foot switch 5 mentioned above can be directly purchased from mature products on the market. An adjustable guide structure is provided inside the paper feeding section side plate 4 of the paper assembler and above the conveyor roller 41 for guiding the paper when it enters the paper feeding section of the paper assembler.

[0017] In this embodiment, the preferred adjustable guide structure includes two guide plates 63 symmetrically arranged above the conveyor roller 41, two guide struts 61 symmetrically fixed between the two paper feeding section side base plates 4 of the paper assembler and passing through the surface of the guide plates 63, a double-ended screw 62 rotatably mounted between the two paper feeding section side base plates 4 of the paper assembler via bearing seats and passing through the surface of the guide plates 63, a motor 64 fixed to the outer surface of the paper feeding section side base plate 4 of the paper assembler by bolts and whose output end is connected to one end of the double-ended screw 62, and a nut sleeve 65 fixed to the surface of the guide plates 63 and threadedly connected to the double-ended screw 62. When the actual paper enters the paper feeding section of the paper assembler through the conveyor roller 41, it can be guided by the two guide plates 63. Subsequently, the motor 64 can be started to make the double-ended screw 62 rotate and drive the nut sleeve 65 to move the guide plates 63 laterally, thereby adjusting the distance between the two guide plates 63 to adapt to different sizes of paper.

[0018] In this embodiment, preferably, the nut sleeve 65 is embedded in the top of the guide plate 63, and the double-ended lead screw 62 passes through the nut sleeve 65 and is threadedly connected to the nut sleeve 65.

[0019] In this embodiment, preferably, the threads at both ends of the double-ended lead screw 62 are in opposite directions, so that when the double-ended lead screw 62 rotates, it can drive the two guide plates 63 to move towards or away from each other under the action of the threads, and the guide support rod 61 can provide support and guidance when the guide plates 63 move.

[0020] In this embodiment, preferably, a solenoid valve is installed on the cylinder 2, and the foot switch 5 is connected to the solenoid valve through an electrical control circuit. The operator can control the start and stop of the cylinder 2 through the foot switch 5.

[0021] Example 2 Please see Figures 1 to 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the pneumatic pressure bar assembly also includes a rubber strip 31, and the rubber strip 31 is installed on the bottom surface of the pressure bar 3, so that when the pressure bar 3 moves down to press down on the paper, it is not easy to cause squeezing damage to the paper surface.

[0022] In this embodiment, preferably, the top surface of the rubber strip 31 is provided with multiple integrated U-shaped inserts 311, and both sides of the U-shaped inserts 311 are provided with integrated side locking blocks 312. The bottom surface of the pressure rod 3 is provided with multiple connecting slots 32 for inserting the U-shaped inserts 311, and both sides of the inner wall of the connecting slots 32 are provided with side locking grooves 321 for the side locking blocks 312 to be engaged. The U-shaped inserts 311 are inserted into the connecting slots 32, and the side locking blocks 312 are engaged in the side locking grooves 321, ensuring the installation stability of the rubber strip 31 at the bottom of the pressure rod 3. The rubber strip 31, U-shaped insert 311, and side retainer 312 are all made of rubber. When squeezed, they will undergo elastic deformation. When replacing the rubber strip 31, simply pull the rubber strip 31 down forcefully, so that the U-shaped insert 311 and the side retainer 312 are squeezed by the inner wall of the connecting slot 32 and undergo elastic deformation until the side retainer 312 is pulled out of the side retainer groove 321. Then the U-shaped insert 311 can be easily pulled out of the connecting slot 32, and the rubber strip 31 can be quickly removed for replacement and maintenance, improving the convenience of subsequent maintenance.

[0023] In this embodiment, preferably, the cross-section of the side block 312 is a right-angled triangle or a semi-circle, so that the side block 312 is easy to undergo elastic deformation when the U-shaped insert 311 is inserted into the connecting slot 32.

[0024] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper-tipping prevention device for the paper feeding section of a paper-folding machine, characterized in that: include The pneumatic pressure rod assembly installed inside the paper feeding section side base plate (4) of the paper machine includes a top beam (1) fixed between the two paper feeding section side base plates (4), a cylinder (2) fixed on the top of the top beam (1), a pressure rod (3) slidably installed on the front surface of the back plate (43), and a foot switch (5) installed at the bottom of the paper feeding section side base plate (4) of the paper machine, and the piston rod (21) at the bottom of the cylinder (2) is connected to the pressure rod (3); And an adjustable guide structure located inside the paper feeding section side plate (4) of the paper machine and above the conveying roller (41).

2. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 1, characterized in that: The adjustable guide structure includes two guide plates (63) symmetrically arranged above the conveyor roller (41), two guide struts (61) symmetrically fixed between the two paper feed section side base plates (4) of the paper machine and passing through the surface of the guide plate (63), a double-headed screw (62) rotatably installed between the two paper feed section side base plates (4) of the paper machine and passing through the surface of the guide plate (63), a motor (64) fixed on the outer surface of the paper feed section side base plate (4) of the paper machine and whose output end is connected to one end of the double-headed screw (62), and a nut sleeve (65) fixed on the surface of the guide plate (63) and threadedly connected to the double-headed screw (62).

3. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 2, characterized in that: The nut sleeve (65) is embedded in the top of the guide plate (63), and the double-ended lead screw (62) passes through the nut sleeve (65) and is threadedly connected to the nut sleeve (65).

4. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 3, characterized in that: The threads at both ends of the double-ended lead screw (62) are in opposite directions.

5. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 1, characterized in that: The pneumatic pressure bar assembly also includes a rubber strip (31), and the rubber strip (31) is installed on the bottom surface of the pressure bar (3).

6. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 5, characterized in that: The top surface of the rubber strip (31) is provided with multiple integrated U-shaped inserts (311), and both sides of the U-shaped inserts (311) are provided with integrated side clips (312). The bottom surface of the pressure rod (3) is provided with multiple connecting slots (32) for inserting the U-shaped inserts (311), and both sides of the inner wall of the connecting slots (32) are provided with side slots (321) for inserting the side clips (312). The U-shaped inserts (311) are inserted into the connecting slots (32), and the side clips (312) are inserted into the side slots (321).

7. A paper-feeding section anti-paper-tilting device for a paper-folding machine according to claim 6, characterized in that: The cross-section of the side block (312) is a right triangle or a semicircle.

8. The anti-paper warping device for the paper feeding section of a paper-making machine according to claim 1, characterized in that: The cylinder (2) is equipped with a solenoid valve, and the foot switch (5) is connected to the solenoid valve through an electrical control circuit.

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