Device for improving bonding strength between paper layers

Abstract

The utility model discloses a device for improving the bonding strength between paper layers. The device is characterized by comprising a rack, feeding pipes and spraying branch pipes, wherein the feeding pipes are mounted on the rack and are symmetrically arranged, and the spraying branch pipes are mounted on the feeding pipes; an atomizing nozzle is arranged on the spraying branch pipe, a shielding mechanism is further installed on the rack, and the shielding mechanism comprises a baffle installed on the rack and an adjusting part installed on the rack and used for adjusting the inclination angle of the baffle. Through the arrangement of the device, the distance between the atomizing nozzles is reduced by utilizing the symmetrical feeding pipes of the U-shaped structure, so that the pressure of the atomizing nozzles is kept uniform, sprayed objects can be uniformly sprayed on the surface of paper, and the interlayer bonding strength of the paper and the production quality of the paper are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper production, in particular to a device for improving the bonding strength between paper layers. Background Art

[0002] In the production process of white paper, multiple sheets of paper need to be stacked and glued together. Usually, a long nozzle is used to spray starch or other adhesives on the mesh cloth, and two adjacent layers of mesh cloth are glued together under the action of a conveying roller. When the conveying roller conveys the mesh cloth, wind force will be generated due to the fast rotation speed of the conveying roller. There is no mechanism to prevent wind interference on both sides of the spraying area of ​​the nozzle, so that when the starch or other adhesive in the nozzle is sprayed on the mesh cloth after atomization, the starch or other adhesive will be blown into the air by the wind or the adhesive sprinkled on the mesh cloth will be blown away, resulting in poor uniformity of the starch or other adhesive on the mesh cloth, reducing the interlayer bonding strength of the paper; on the other hand, the nozzle is across the top of the mesh cloth and has a long length. When spraying, the spray pressure of the nozzle at the near end is greater than the spray pressure at the far end. When the mesh cloth is subjected to a large spray pressure, the spray speed is too fast to stick to the surface of the mesh cloth or the mesh cloth is damaged, reducing the quality of the paper; therefore, it is necessary to propose a device for improving the interlayer bonding strength of the paper. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and to provide a device for improving the bonding strength between paper layers.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: it is characterized in that it includes a frame, a feed pipe installed on the frame and symmetrically placed with each other, and a spray branch pipe installed on the feed pipe; the spray branch pipe is provided with an atomizing nozzle, and the frame is also equipped with a shielding mechanism, and the shielding mechanism includes a baffle installed on the frame and an adjusting part installed on the frame for adjusting the inclination angle of the baffle.

[0005] Preferably, the feeding pipe is of U-shaped structure, and a control valve is installed on the feeding pipe.

[0006] Preferably, the adjustment part comprises a base mounted on the frame, a limit pin mounted on the base, a toothed disc mounted on the baffle and cooperating with the limit pin, and a handle is mounted on the toothed disc.

[0007] Preferably, the toothed disc is provided with a plurality of tooth grooves, and the limit pin is provided with a spring for pushing the limit pin to be stuck on the tooth groove to achieve limit locking.

[0008] The beneficial effects of the utility model are as follows: through the arrangement of the device, the symmetrical U-shaped feeding pipe is used to feed materials from both ends of the feeding pipe at the same time, thereby reducing the spacing between the various atomizing nozzles, so that the pressure of the atomizing nozzles is kept uniform, and the spray can be evenly sprayed on the surface of the paper, thereby improving the bonding strength between the paper layers and the production quality of the paper;

[0009] The shielding mechanism can effectively prevent the spraying material from being blown away by wind due to the excessive speed of the conveying roller during the spraying process, thereby improving the spraying uniformity of the atomizing nozzle and the bonding strength between paper layers.

[0010] By setting the adjustment part, the inclination angle of the baffle can be adjusted, thereby adjusting the distance between the baffle and the mesh, and it can be applied to meshes of various thicknesses, with strong applicability;

[0011] Through the setting of the control valve, when in normal use, the control valve is in a closed state, and the spray material is delivered to the atomizing nozzle from both ends of the feeding pipe at the same time, thereby shortening the feeding length of the feeding pipe and making the atomizing nozzle pressure on the feeding pipe more uniform; on the other hand, when a feeding failure occurs on one side, the feeding pipe can maintain normal feeding by opening the control valve, ensuring uninterrupted spraying and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an enlarged schematic diagram of the structure at A of the utility model;

[0014] Figure 3 It is an enlarged schematic diagram of the structure at B of the utility model.

[0015] Markings in the figure: 1 frame, 2 feeding pipe, 21 spray branch pipe, 22 atomizing nozzle, 3 control valve, 31 baffle, 32 base, 33 limit pin, 34 toothed disc, 35 handle, 36 tooth groove, 37 spring. DETAILED DESCRIPTION

[0016] The following is a further description of the device for improving the bonding strength between paper layers of the present invention through embodiments and in conjunction with the accompanying drawings.

[0017] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0018] In the present invention, unless otherwise expressly specified or limited, the terms "connect", "fixed" and the like shall be interpreted in a broad sense.

[0019] For example, "fixed" can be fixed connection, detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figures 1 to 3 As shown, the utility model proposes a device for improving the bonding strength between paper layers, which is characterized by comprising a frame 1, a feed pipe 2 installed on the frame 1 by bolts and symmetrically placed, and a spray branch pipe 21 installed on the feed pipe 2; the spray branch pipe 21 is provided with an atomizing nozzle 22, and the frame 1 is also provided with a shielding mechanism, the shielding mechanism includes a baffle 31 installed on the frame 1 and an adjusting part installed on the frame 1 for adjusting the inclination angle of the baffle 31, the feed pipe 2 is a U-shaped structure, and a control valve 3 is installed on the feed pipe 2; through the setting of the device, the feed pipe 2 with a symmetrical U-shaped structure is used to feed the paper. The two ends of the tube 2 are fed at the same time, which reduces the spacing between the atomizing nozzles 22, so that the pressure of the atomizing nozzles 22 is kept uniform, and the spray can be evenly sprayed on the paper surface, thereby improving the bonding strength between paper layers and the production quality of paper; through the setting of the control valve 3, when in normal use, the control valve 3 is in a closed state, and the spray is delivered to the atomizing nozzle 22 from both ends of the feeding tube 2, thereby shortening the feeding length of the feeding tube 2 and making the pressure of the atomizing nozzle 22 on the feeding tube 2 more uniform; on the other hand, when a feeding failure occurs on one side, the feeding tube 2 can maintain normal feeding by opening the control valve 3, ensuring uninterrupted spraying and improving production efficiency.

[0021] The adjusting part comprises a base 32 mounted on the frame 1, a limit pin 33 movably mounted on the base 32, and a toothed disc 34 mounted on the baffle 31 by bolts and limitedly matched with the limit pin 33. A handle 35 is mounted on the toothed disc 34, and a plurality of tooth grooves 36 are provided on the toothed disc 34. A spring 37 for pushing the limit pin 33 to be stuck on the tooth groove 36 to achieve limit locking is installed on the limit pin 33. By setting the shielding mechanism, the atomizing nozzle 22 can effectively prevent the conveying roller from generating wind force to blow away the sprayed material due to excessive speed during the spraying process, improve the spraying uniformity of the atomizing nozzle 22, and improve the bonding strength between paper layers. By setting the adjusting part, the inclination angle of the baffle 31 can be adjusted, thereby adjusting the distance between the baffle 31 and the mesh, which can be applicable to meshes of various thicknesses and has strong applicability. By setting the spring 37, the limit pin 33 is pushed into the tooth groove 36 to prevent the limit pin 33 from being separated from the tooth groove 36, thereby improving the stability of the baffle 31.

[0022] When the utility model is used, the feed pipe 2 is first connected to the material spraying device, and the limit pin 33 is pulled outward to compress the spring 37 and disengage the tooth groove 36, and then the handle 35 is pressed downward, and the handle 35 drives the baffle 31 to rotate, thereby adjusting the angle of the baffle 31 to prevent the baffle 31 from scraping the surface of the paper, and when it rotates to a suitable angle, the limit pin 33 is released, and the limit pin 33 is pushed toward the tooth disc 34 under the rebound force of the spring 37, and the limit pin 33 is stuck in the tooth groove 36, so that the baffle 31 is limited at the current angle; then the paper production line and the spraying equipment are turned on, and the starch or adhesive in the spraying equipment is simultaneously input from both ends of the feed pipe 2, and then sprayed downward on the mesh through the atomizing nozzle 22, so that the starch or adhesive can be evenly sprayed on the surface of the paper, avoiding the influence of wind on the spraying, and realizing fast and uniform spraying of starch or adhesive.

[0023] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A device for improving the bonding strength between paper layers, characterized in that The invention comprises a frame (1), a feed pipe (2) mounted on the frame (1) and symmetrically arranged with respect to each other, and a spray branch pipe (21) mounted on the feed pipe (2); the spray branch pipe (21) is provided with an atomizing nozzle (22); the frame (1) is also provided with a shielding mechanism, and the shielding mechanism comprises a baffle (31) mounted on the frame (1) and an adjusting portion mounted on the frame (1) for adjusting the inclination angle of the baffle (31).

2. The device for improving the bonding strength between paper layers according to claim 1, characterized in that: The feeding pipe (2) is of a U-shaped structure, and a control valve (3) is installed on the feeding pipe (2).

3. The device for improving the bonding strength between paper layers according to claim 1, characterized in that: The adjustment portion comprises a base (32) mounted on the frame (1), a limit pin (33) mounted on the base (32), and a toothed disc (34) mounted on the baffle (31) and limitedly matched with the limit pin (33); a handle (35) is mounted on the toothed disc (34).

4. The device for improving the bonding strength between paper layers according to claim 3, characterized in that: The toothed disc (34) is provided with a plurality of tooth grooves (36), and the limit pin (33) is provided with a spring (37) for pushing the limit pin (33) to be stuck on the tooth groove (36) to achieve limit locking.

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