Paper edge traction device of paper machine
By designing a paper edge traction device with a blower and a air guide plate in the paper machine, the problem of floating on the end of the paper is solved, and the stable traction of the paper web and normal paper lead process are achieved.
Patent Information
- Application Number
- CN202420836236.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-22
AI Technical Summary
During the production process of paper making machines, the paper web is prone to float at the end of the paper when it expands to the end, resulting in paper breakage and affecting the production start-up rate.
A paper edge traction device for paper making machine is designed, including a bracket and an air intake pipe, equipped with a blowing pipe and a air guide plate, which traction and limit the paper tail edge by blowing downwards and guiding the flow to prevent floating.
It effectively avoids the risk of paper tail edge floating due to water jet flow from the shredder, and ensures smooth paper drawing and expansion of the paper web.
Smart Images
Figure CN222313659U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of papermaking, in particular to a paper edge traction device for a papermaking machine. Background Art
[0002] During the production process of papermaking machines, paper breaks often occur. After a paper break occurs, the paper web needs to be guided at the connection of each part of the stem. When guiding the paper, use a paper strip to guide it to the next part first, and then use a paper cutter to adjust the width of the paper sheet. When the full width of the paper web enters the shredder, the paper web will be pulled by the spray water in the shredder. While shredding the paper, the entire paper web is pulled to keep it normal before guiding the paper to the next part. When the paper web is guided to the next part, the spray water in the shredder has a better effect when the paper web is full width, but when the width is expanded to the last paper tail edge (about 30cm remaining), because the paper edge is small, the paper edge is easy to break and lose traction under the spray of spray water. At the same time, the water sprayed by the shredder generates an upward airflow, which will also cause the paper edge to float up and hit the paper web and break again. Repeated paper guiding and repeated paper breaking have a great impact on the production start-up rate. In view of the above technical problems, the present application proposes a paper edge traction device, which pulls the last paper tail edge during the paper guiding process so that it will not float up, ensuring smooth expansion.
[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content
[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a paper edge traction device for a papermaking machine, aiming to solve the technical problem in the prior art that the paper is easily floated when the paper is stretched to the last edge of the paper.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A paper edge pulling device for a papermaking machine comprises a bracket and an air inlet pipe, wherein two air blowing pipes are arranged on the bracket, a plurality of air blowing holes are arranged at the bottom of each air blowing pipe, an air guide plate is arranged at the bottom of each air blowing pipe, and the air blowing holes of the two air blowing pipes are located in the middle of the two air guide plates; each air blowing pipe is provided with an air inlet interface; the air inlet pipe is connected to two branch pipes, and each branch pipe is connected to the air inlet interface of the corresponding air blowing pipe.
[0007] Furthermore, in the paper edge pulling device of the paper machine, each air blowing pipe is a square tube, and the air inlet interface is arranged at the end of the square tube.
[0008] Furthermore, in the paper edge pulling device of the paper machine, the blowing holes of each blowing pipe are circular holes, and the diameters of each blowing hole are equal.
[0009] Furthermore, in the paper edge pulling device of the paper machine, the blowing holes of each blowing pipe are arranged at the same interval.
[0010] Furthermore, in the paper edge traction device for a paper machine, the bracket includes a vertical rod and a horizontal rod, and two air blowing pipes are arranged on the horizontal rod.
[0011] Furthermore, in the paper edge traction device for a paper machine, the cross bar and the vertical bar are detachably connected; and the two air blowing pipes are detachably connected to the cross bar.
[0012] Furthermore, in the paper edge traction device for a paper machine, the two branch pipes are hoses.
[0013] Furthermore, in the paper edge pulling device of the paper machine, a regulating valve is provided on the air inlet pipe.
[0014] Beneficial effects: The utility model provides a paper edge traction device for a papermaking machine. Compared with the prior art, the paper edge traction device for a papermaking machine can generate a downward traction force on the tail edge of a paper web by arranging two air blowing pipes; by arranging two air guide plates, it can not only guide the downward airflow, but also play a lateral limiting role on the tail edge of the paper web, thereby avoiding the technical problem that the tail edge of the paper will float up due to the airflow generated by the water sprayed by the shredder during the paper feeding process, thereby ensuring normal paper feeding. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a working principle diagram of the paper edge traction device of the paper machine.
[0016] Figure 2 for Figure 1 A partial enlarged view of the middle S region.
[0017] Figure 3 This is the front view of the air blowing pipe and the air guide plate.
[0018] Figure 4 This is a bottom view of the air blowing pipe and the air guide plate. DETAILED DESCRIPTION
[0019] The utility model provides a paper edge pulling device for a paper machine. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0020] See also Figures 1 to 4 The utility model provides a paper edge pulling device for a paper machine. The drawings are only used to explain the structural principle and are not proportional to the actual product. The drawings only depict structures related to the utility model of the present application, and some conventional structures are not specifically depicted. Figure 2 The arrows in the diagram indicate the direction of air flow.
[0021] The paper edge pulling device of the paper machine comprises a bracket 1 and an air inlet pipe 2. Two air blowing pipes 3 are arranged on the bracket. A plurality of air blowing holes 302 are arranged at the bottom of each air blowing pipe. An air guide plate 4 is arranged at the bottom of each air blowing pipe. The air blowing holes of the two air blowing pipes are located in the middle of the two air guide plates (i.e., Figure 2 As shown, the two air guide plates are respectively arranged outwards); each air blowing pipe is respectively provided with an air inlet interface 301; the air inlet pipe 2 is connected to two branch pipes 22, each branch pipe is respectively connected to the air inlet interface of the corresponding air blowing pipe. In actual application, the above air inlet pipe is connected to the compressed air source of the factory.
[0022] Preferably, each air blowing pipe 3 is a square pipe, and the air inlet interface is arranged at the end of the square pipe. This arrangement is not only convenient for connecting the bottom of the air blowing pipe with the air guide plate, but also each air blowing hole is located on the lower surface of the air blowing pipe, and the blown air flow flows downward as a whole, which can have a good pulling effect on the paper tail edge of the paper web.
[0023] Preferably, the blowing holes of each blowing pipe are circular holes, and the diameters of each blowing hole are equal.
[0024] Preferably, the blowing holes of each blowing pipe are arranged at the same intervals. This arrangement ensures that the airflow is evenly ejected in the length direction of the blowing pipe, further improving the traction effect on the paper trailing edge.
[0025] In practical applications, the two air blowing pipes have the same specifications to ensure that the air flow size and air flow distribution blown out from the bottom of the two air blowing pipes are roughly the same.
[0026] Furthermore, the support 1 comprises a vertical rod 11 and a horizontal rod 12, and two air blowing pipes are arranged on the horizontal rod. This arrangement makes the support structure simple and easy to manufacture and install.
[0027] Furthermore, the crossbar and the vertical bar are detachably connected; the two air blowing pipes are detachably connected to the crossbar. Specifically, the vertical bar is provided with a plurality of threaded holes (not shown in the figure), and the crossbar is provided with a plurality of bolts (not shown in the figure). The height of the crossbar can be adjusted by screwing into different threaded holes. Each air blowing pipe is slidably connected to the crossbar, and after being adjusted to a suitable position, it can be locked with a locking screw (not shown in the figure).
[0028] Preferably, the two branch pipes are hoses. By providing the hoses, it is convenient to adjust the height of the cross bar and the horizontal position of the air blowing pipe.
[0029] Preferably, a regulating valve 29 is provided on the air intake pipe to facilitate control of the air intake flow rate.
[0030] For ease of understanding, Figure 1The guide roller 90, the paper web 91, and the shredder 92 are schematically drawn. When the paper is guided, the tail edge 911 of the paper web passes between the two air blowing pipes and the two air guide plates. Since the two air blowing pipes blow air downward, and the air guide plates can guide the airflow to blow downward, a negative pressure is formed between the two air guide plates, and the tail edge of the paper web will be attracted downward between the two air guide plates. In practical applications, by changing the opening of the regulating valve 29, the negative pressure between the air guide plates can be adjusted, that is, the downward traction force on the paper web can be adjusted. In addition, the two air guide plates also play a lateral limiting role on the tail edge of the paper web, ensuring that the tail edge of the paper web moves downward as a whole.
[0031] In short, the paper edge traction device of the paper machine can generate a downward traction force on the tail edge of the paper web, and play a lateral limiting role on the tail edge of the paper web, thereby avoiding the technical problem that the tail edge of the paper will float up due to the airflow generated by the water sprayed by the shredder during the paper feeding process, thereby ensuring normal paper feeding.
[0032] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.
Claims
1. A paper edge pulling device for a paper machine, comprising a bracket and an air inlet pipe, characterized in that: Two air blowing pipes are arranged on the bracket, a plurality of air blowing holes are arranged at the bottom of each air blowing pipe, an air guide plate is arranged at the bottom of each air blowing pipe, and the air blowing holes of the two air blowing pipes are located in the middle of the two air guide plates; each air blowing pipe is provided with an air inlet interface; the air inlet pipe is connected to two branch pipes, and each branch pipe is connected to the air inlet interface of the corresponding air blowing pipe.
2. The paper edge pulling device for a paper machine according to claim 1, characterized in that: Each air blowing pipe is a square tube, and the air inlet interface is arranged at the end of the square tube.
3. The paper edge pulling device of a paper machine according to claim 1, characterized in that: The blowing holes of each blowing pipe are all round holes, and the diameters of each blowing hole are equal.
4. The paper edge pulling device for a paper machine according to claim 1, characterized in that: The blowing holes of each blowing pipe are arranged at the same intervals.
5. The paper edge pulling device for a paper machine according to claim 1, characterized in that: The support comprises a vertical rod and a horizontal rod, and two air blowing pipes are arranged on the horizontal rod.
6. The paper edge pulling device for a paper machine according to claim 1, characterized in that: The crossbar and the vertical pole are detachably connected; the two air blowing pipes are detachably connected to the crossbar.
7. The paper edge pulling device for a paper machine according to claim 1, characterized in that: The two branches are flexible pipes.
8. The paper edge pulling device for a paper machine according to claim 1, characterized in that: A regulating valve is arranged on the air intake pipe.