Spraying and sizing device for papermaking

Abstract

The utility model discloses a spraying sizing device for papermaking, which relates to the technical field of papermaking equipment and comprises a connecting frame, a driving motor, a pressure sensor, a control panel and a telescopic mechanism, the driving motor, the pressure sensor and the telescopic mechanism are all in control connection with the control panel, and a fixed roller is rotatably mounted in the middle of the connecting frame. The fixed roller is in transmission connection with a driving motor, a moving plate is fixedly installed at the output end of the telescopic mechanism, sliding blocks are slidably installed on the sides, close to the fixed roller, of the left end and the right end of the moving plate in the longitudinal direction, a moving roller is rotationally installed between the two sliding blocks, and the fixed roller and the moving roller are arranged in parallel in the longitudinal direction. According to the spraying sizing device for papermaking, through the U-shaped glue scraping groove composed of the collecting groove and the L-shaped plates at the two ends of the collecting groove, glue liquid left on the end faces and the outer ring faces of the fixed roller and the movable roller can be scraped away, and therefore the glue liquid is prevented from being condensed on the fixed roller and the movable roller, and paper is prevented from being broken in the sizing process.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking equipment, and particularly relates to a coating and sizing device for papermaking. Background Technique

[0002] In the Chinese utility model patent application number: CN202322965746.3, a surface sizing machine for papermaking production is disclosed. The structure includes: a first bracket, a second bracket, a sizing pool, a sizing roller, a limiting roller, a guiding roller, a paper feeding roller, and a winding roller. The second bracket is arranged above the first bracket. The first bracket is provided with a first lifting mechanism, and the first lifting mechanism is connected to the second bracket. The first bracket is rotatably provided with a sizing roller. The limiting roller is arranged inside the second bracket. A groove body is arranged below the sizing roller. The second lifting mechanism is connected with a sizing pool. A redundant glue scraping mechanism is arranged above one side of the groove body. By arranging the sizing roller below the paper to be sized, even if glue drops from the sizing roller, the glue will not drop onto the paper, thus avoiding the problem of uneven sizing layer on the paper. By setting the redundant glue scraping mechanism, the redundant glue remaining on the sizing roller after sizing can be scraped off, so that there is no redundant glue remaining on the surface of the sizing roller every time it dips into the sizing pool. However, this device can only size one side of the paper at a time, so it is necessary to wait for the glue to dry before sizing the other side of the paper, which not only makes the operation complex, but also seriously affects the sizing efficiency of the paper. In addition, the redundant glue scraping mechanism on this device can only scrape the redundant glue on the circumferential surface of the sizing roller, and cannot scrape the redundant glue on both end faces of the sizing roller. In the high-temperature environment of the papermaking workshop, the glue on both end faces of the sizing roller will quickly coagulate into glue blocks. After running for a period of time in production, the glue blocks on the end face of the sizing roller will accumulate more and more. Some glue blocks are thrown into the nip of the sizing machine under the action of the centrifugal force of high-speed rotation, causing the sizing machine to break the paper and seriously affecting normal production.

[0003] Therefore, it is very necessary to propose a coating and sizing device for papermaking to solve the above problems. Content of the Utility Model

[0004] Technical problems to be solved: The purpose of the utility model is to provide a coating and sizing device for papermaking to solve the problem that in the existing sizing machine during sizing, glue adheres to both end faces of the sizing roller, and in the high-temperature environment of the papermaking workshop, the glue will quickly coagulate into glue blocks. After running for a period of time in production, the glue blocks on the end face of the sizing roller will accumulate more and more. Some glue blocks are thrown into the nip of the sizing machine under the action of the centrifugal force of high-speed rotation, causing the sizing machine to break the paper and seriously affecting normal production.

[0005] Technical solution: To achieve the above purpose, the utility model is implemented through the following technical solutions: a papermaking glue spraying device, including a connecting frame, a driving motor, a pressure sensor, a control panel and a telescopic mechanism, and the driving motor, the pressure sensor and the telescopic mechanism are all connected to the control panel for control, a fixed roller is rotatably installed in the middle of the connecting frame, the fixed roller is connected to the driving motor by transmission, a movable plate is fixedly installed at the output end of the telescopic mechanism, sliders are installed on the left and right ends of the movable plate close to the fixed roller in a longitudinal sliding manner, a movable roller is rotatably installed between the two sliders, and the fixed roller and the movable roller are arranged parallel to the longitudinal direction; through holes are opened symmetrically at both ends of the movable plate in the vertical direction, a sliding rod is slidably installed in the through hole, and one end of the sliding rod is fixedly connected to the sliding rod , a baffle is fixedly installed at the other end, a spring is mounted on the sliding bar between the baffle and the movable plate, and a pressure sensor is fixedly installed on the side of the movable plate close to the slider; a collecting trough is detachably installed below the fixed roller and the movable roller, and the tops of the side walls of the two collecting troughs that are away from each other respectively contact the fixed roller and the movable roller, and L-shaped plates are fixedly installed at both ends of the two collecting troughs, and the end faces of the fixed roller and the movable roller respectively contact one end of the L-shaped plate on the adjacent side; a first guide roller is rotatably installed above the fixed roller, and a second guide roller is rotatably installed below the movable roller, and the outer annular surfaces of the second guide roller are respectively tangent to the outer annular surfaces of the fixed roller and the first guide roller, and a heating frame is provided between the two collecting troughs, and a plurality of nozzles for spraying glue onto the fixed roller and the movable roller are provided in the connecting frame.

[0006] Preferably, the telescopic mechanism is arranged on the front side of the connecting frame, and the telescopic mechanism includes a motor fixedly mounted on the connecting frame, and a bidirectional screw is installed in the connecting frame for horizontal rotation, the bidirectional screw is transmission connected to the motor, and both ends of the bidirectional screw are threadedly fitted with a screw barrel, a connecting rod is hinged on the screw barrel, and the other end of the connecting rod is hinged to the movable plate.

[0007] Preferably, support rods are symmetrically fixedly installed on the left and right sides of the connection frame along the longitudinal direction, two mounting plates are fixedly installed in parallel on the top of the connection frame along the longitudinal direction, and multiple nozzles are evenly fixedly installed on the bottom of the two mounting plates along the transverse direction.

[0008] Preferably, a first fixing plate is fixedly installed laterally symmetrically on the top of the connecting frame, and a first guide roller is rotatably installed between the two first fixing plates. A second fixing plate is fixedly installed laterally symmetrically on the bottom of the connecting frame, and a second guide roller is rotatably installed between the two second fixing plates.

[0009] Preferably, an anti-slip pad is fixedly mounted on the lower end of the support rod.

[0010] Beneficial effects: Compared with the prior art, the present utility model provides a coating and spraying sizing device for papermaking. This coating and spraying sizing device for papermaking has a unique structure and is convenient to use. Through the combined setting of the telescopic mechanism and the pressure sensor, it can not only size both sides of the paper simultaneously, but also size papers with different thicknesses. Moreover, after changing the paper, the fixed roller and the moving roller can be quickly adjusted to the appropriate position through the pressure sensor, so that the pressure between the two rollers remains stable, which can not only improve work efficiency, but also make the quality of each batch of papers consistent.

[0011] In addition, when the device is sizing, the U-shaped glue scraping groove formed by the collecting tank and the L-shaped plates at both ends thereof can scrape off the glue remaining on the end faces and outer rings of the fixed roller and the moving roller, thereby preventing the glue from condensing on the fixed roller and the moving roller and preventing the paper from breaking during the sizing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional front view schematic diagram of the structure of the present utility model;

[0013] Figure 2 is a three-dimensional side view schematic diagram of the structure of the present utility model;

[0014] Figure 3 is a side view schematic diagram of the structure of the present utility model;

[0015] Figure 4 is a three-dimensional schematic diagram of the collecting tank structure of the present utility model;

[0016] Figure 5 is a cross-sectional schematic diagram of the structure of the present utility model.

[0017] In the figure: 1. connecting frame; 2. fixed roller; 3. moving plate; 4. sliding rod; 5. slider; 6. spring; 7. moving roller; 8. nozzle; 9. first fixing plate; 10. first guiding roller; 11. second fixing plate; 12. second guiding roller; 13. collecting tank; 14. heating frame; 15. L-shaped plate; 16. driving motor; 17. motor; 18. pressure sensor; 19. bidirectional screw; 20. screw barrel; 21. connecting rod; 22. support rod; 23. control panel; 24. mounting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0019] Embodiment 1: Embodiment 1 of the present utility model provides a coating and spraying sizing device for papermaking, which is directly improved on the existing sizing device and has a unique structure. Please refer to Figures 1-5As shown, it includes a connecting frame 1, a driving motor 16, a pressure sensor 18, a control panel 23 and a telescopic mechanism, and the driving motor 16, the pressure sensor 18 and the telescopic mechanism are all controlled and connected with the control panel 23. A fixed roller 2 is rotatably installed in the middle of the connecting frame 1, and the fixed roller 2 is transmission-connected with the driving motor 16. There are various transmission modes between the fixed roller 2 and the driving motor 16, for example: the driving motor 16 is fixedly installed on the connecting frame 1, one end of the fixed roller 2 passes through the connecting frame 1 and is fixedly connected with the output shaft of the driving motor 16 through a coupling, a moving plate 3 is fixedly installed at the output end of the telescopic mechanism, and sliders 5 are longitudinally slidably installed on the left and right ends of the moving plate 3 close to the fixed roller 2, and a moving roller 7 is rotatably installed between the two sliders 5, and the fixed roller 2 and the moving roller 7 are longitudinally arranged in parallel.

[0020] There are many ways to install the slider 5, for example: sliding grooves are opened on the side walls on the front and rear sides of the connecting frame 1, the slider 5 is slidably installed in the sliding grooves, the telescopic mechanism is arranged on the front side of the connecting frame 1, the telescopic mechanism includes a motor 17 fixedly installed on the connecting frame 1, a bidirectional screw 19 is installed in the connecting frame 1 along the horizontal rotation, the bidirectional screw 19 is connected to the motor 17 in transmission, both ends of the bidirectional screw 19 are threadedly mounted with a screw barrel 20, a connecting rod 21 is hinged on the screw barrel 20, and the other end of the connecting rod 21 is hinged to the movable plate 3. There are many ways to connect the motor 17 to the bidirectional screw 19 in transmission, for example: one end of the bidirectional screw 19 passes through the connecting frame 1 and is fixedly connected to the output shaft of the motor 17 through a coupling.

[0021] Through holes are symmetrically opened at both ends of the movable plate 3 along the vertical direction, and a slide bar 4 is slidably installed in the through hole. One end of the slide bar 4 is fixedly connected to the slider 5, and the other end is fixedly installed with a baffle. A spring 6 is mounted on the slide bar 4 between the baffle and the movable plate 3, and the pressure sensor 18 is fixedly installed on the side of the movable plate 3 close to the slider 5; in the initial state, the spring 6 drives the slider 5 to contact one end of the pressure sensor 18, and the collecting grooves 13 are detachably installed under the fixed roller 2 and the movable roller 7. The tops of the side walls of the two collecting grooves 13 that are away from each other contact with the outer annular surfaces of the fixed roller 2 and the movable roller 7 respectively, and L-shaped plates 15 are fixedly installed at both ends of the two collecting grooves 13, and the end faces of the fixed roller 2 and the movable roller 7 contact with one end of the adjacent side L-shaped plate 15 respectively; there are various ways to install the two collecting grooves 13, for example: one of the collecting grooves 13 is fixedly installed between the two sliders 5 by bolts so that it can move with the movable roller 7, and the other collecting groove 13 is fixedly installed on the connecting frame 1 by bolts.

[0022] A first guide roller 10 is rotatably installed above the fixed roller 2, and a second guide roller 12 is rotatably installed below the moving roller 7. The outer circumferential surface of the second guide roller 12 is tangent to the outer circumferential surfaces of the fixed roller 2 and the first guide roller 10 respectively. A heating frame 14 is provided between the two collecting grooves 13. The heating frame 14 is provided with heating wires and temperature sensors. The temperature sensors are connected to the control panel 23 for monitoring the temperature of the heating wires to prevent the paper from being burned. The connecting frame 1 is provided with a plurality of nozzles 8 for spraying glue onto the fixed roller 2 and the moving roller 7.

[0023] Support rods 22 are symmetrically and fixedly installed longitudinally on both the left and right sides of the connecting frame 1. Two mounting plates 24 are fixedly installed longitudinally and in parallel on the top of the connecting frame 1. A plurality of nozzles 8 are respectively fixedly installed horizontally and evenly on the bottoms of the two mounting plates 24. When the fixed roller 2 and the moving roller 7 are in contact with each other, the nozzles 8 can spray glue onto the tops of the fixed roller 2 and the moving roller 7. There are various installation methods for the first guide roller 10 and the second guide roller 12. For example: First fixing plates 9 are symmetrically and fixedly installed horizontally on the top of the connecting frame 1, and the first guide roller 10 is rotatably installed between the two first fixing plates 9. Second fixing plates 11 are symmetrically and fixedly installed horizontally on the bottom of the connecting frame 1, and the second guide roller 12 is rotatably installed between the two second fixing plates 11.

[0024] In the initial state, the fixed roller 2 and the moving roller 7 are separated. When we use this sizing device to apply glue to the paper, first, one end of the paper is wound around the first guide roller 10 and enters the heating frame 14, and then is fixed on the winding device via the second guide roller 12. The motor 17 is started, and the motor 17 drives the bidirectional screw 19 to rotate, so that the two screw barrels 20 on the bidirectional screw 19 approach each other. When the two screw barrels 20 approach each other, the connecting rod 21 will drive the moving plate 3 to move towards the fixed roller 2 and make the fixed roller 2 contact with the moving roller 7. The pressure sensor 18 can detect the extrusion pressure between the fixed roller 2 and the moving roller 7 to prevent the paper from being deformed or damaged due to excessive extrusion pressure between the fixed roller 2 and the moving roller 7. When the pressure reaches the preset threshold, the motor 17 stops operating.

[0025] Start the drive motor 16, the nozzle 8, the heating wire in the heating frame 14, and the winding device simultaneously. The nozzle 8 sprays glue onto the tops of the fixed roller 2 and the moving roller 7. The drive motor 16 drives the fixed roller 2 to rotate clockwise. Since the fixed roller 2 and the moving roller 7 are in contact with each other through the paper, when the fixed roller 2 rotates clockwise, it will synchronously drive the moving roller 7 to rotate counterclockwise, so as to apply glue to both sides of the paper. After the glue application, the glue remaining on the end faces and the outer ring surfaces of the fixed roller 2 and the moving roller 7 is immediately scraped off by the U-shaped glue scraping groove formed by the corresponding collecting groove 13 and the L-shaped plates 15 at both ends thereof. Then, the fixed roller 2 and the moving roller 7 move under the nozzle 8 again and are sprayed with glue again, so as to avoid the situation that the paper breaks due to the coagulation of the glue on the fixed roller 2 and the moving roller 7. The glued paper is dried in the heating frame 14 and then wound on the winding device through the second guide roller 12.

[0026] Embodiment 2: The difference between Embodiment 2 and Embodiment 1 is that an anti-slip pad is fixedly installed at the lower end of the support rod 22 to enhance the friction between the glue application device and the ground by using the anti-slip pad and prevent the glue application device from moving; in addition, during the actual use of the device, a glue storage tank can also be provided below the glue application device. The glue storage tank is provided with two connecting pipes, and the other ends of the two connecting pipes are respectively communicated with the bottoms of the two collecting grooves 13 for collecting the scraped glue into the glue storage tank.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coating and spraying sizing device for papermaking, comprising a connecting frame (1), a driving motor (16), a pressure sensor (18), a control panel (23) and a telescopic mechanism, and the driving motor (16), the pressure sensor (18) and the telescopic mechanism are all connected to the control panel (23) for control, and it is characterized in that: A fixed roller (2) is rotatably installed in the middle of the connection frame (1). The fixed roller (2) is in transmission connection with a driving motor (16). The output end of the telescopic mechanism is fixedly installed with a moving plate (3). On both sides of the left and right ends of the moving plate (3) close to the fixed roller (2), sliders (5) are slidably installed longitudinally. A moving roller (7) is rotatably installed between the two sliders (5), and the fixed roller (2) and the moving roller (7) are arranged in parallel longitudinally. Through holes are symmetrically opened vertically at both ends of the moving plate (3). A sliding rod (4) is slidably installed in the through hole. One end of the sliding rod (4) is fixedly connected to the slider (5), and the other end is fixedly installed with a baffle. A spring (6) is sleeved on the sliding rod (4) between the baffle and the moving plate (3). A pressure sensor (18) is fixedly installed on the side of the moving plate (3) close to the slider (5). Collection troughs (13) are detachably installed below the fixed roller (2) and the moving roller (7). The top parts of the side walls of the two collection troughs (13) away from each other are respectively in contact with the fixed roller (2) and the moving roller (7). L-shaped plates (15) are fixedly installed at both ends of the two collection troughs (13). The end faces of the fixed roller (2) and the moving roller (7) are respectively in contact with one end of the adjacent L-shaped plate (15). A first guiding roller (10) is rotatably installed above the fixed roller (2). A second guiding roller (12) is rotatably installed below the moving roller (7). The outer ring surface of the second guiding roller (12) is tangent to the outer ring surfaces of the fixed roller (2) and the first guiding roller (10). A heating frame (14) is arranged between the two collection troughs (13). Multiple nozzles (8) for spraying glue onto the fixed roller (2) and the moving roller (7) are arranged in the connection frame (1).

2. The sizing device for papermaking by coating and spraying according to claim 1, wherein: The telescopic mechanism is arranged at the front side of the connection frame (1). The telescopic mechanism includes a motor (17) fixedly installed on the connection frame (1). A bidirectional screw rod (19) is rotatably installed horizontally in the connection frame (1). The bidirectional screw rod (19) is in transmission connection with the motor (17). Threaded barrels (20) are sleeved on both ends of the bidirectional screw rod (19). A connecting rod (21) is hinged to the threaded barrel (20). The other end of the connecting rod (21) is hinged to the moving plate (3).

3. The sizing device for papermaking by coating and spraying according to claim 1, wherein: Support rods (22) are symmetrically and fixedly installed longitudinally on both the left and right sides of the connection frame (1). Two mounting plates (24) are fixedly installed longitudinally and in parallel at the top of the connection frame (1). Multiple nozzles (8) are respectively and evenly fixedly installed at the bottom of the two mounting plates (24) horizontally.

4. A spraying sizing device for papermaking according to claim 1, characterized in that: First fixing plates (9) are symmetrically and fixedly installed horizontally at the top of the connection frame (1). The first guiding roller (10) is rotatably installed between the two first fixing plates (9). Second fixing plates (11) are symmetrically and fixedly installed horizontally at the bottom of the connection frame (1). The second guiding roller (12) is rotatably installed between the two second fixing plates (11).

5. The sizing device for papermaking by coating and spraying according to claim 3, characterized in that: An anti-slip pad is fixedly installed at the lower end of the support rod (22).

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