Temperature control film coating device for fire-retardant and anti-static filter bag

Abstract

This utility model discloses a temperature-controlled film-coating device for flame-retardant and antistatic filter bags, including a workbench and a smoothing mechanism. The workbench has a feeding hood on its upper right side and a film-coating hood on its left side. A discharge port is opened on the lower side of the left wall of the film-coating hood. The smoothing mechanism includes a fixed frame, an extension frame, a smoothing frame, and smoothing rollers. The fixed frame is fixedly connected to the upper side wall of the feeding hood. An extension frame is fixedly connected to the middle right side of the fixed frame. Smoothing frames are symmetrically rotatably connected to the ends of the extension frames. Smoothing rollers are rotatably connected inside the two smoothing frames. A filter cloth flattening roller is rotatably connected between the front and rear inner walls of the fixed frame. A middle flattening head is fixedly connected to the middle right side of the lower surface of the fixed frame. This temperature-controlled film-coating device for flame-retardant and antistatic filter bags effectively prevents wrinkles from forming on the filter cloth surface during hot pressing, thus ensuring complete adhesion to the film.

Description

Technical Field

[0001] This utility model relates to the field of antistatic filter bag production technology, specifically a temperature-controlled coating device for flame-retardant and antistatic filter bags. Background Technology

[0002] Antistatic filter bags are made by adding conductive fibers to the filter bag to achieve conductivity and explosion protection. However, in special environments, it is necessary to have flame-retardant properties to prevent the filter bag from burning. The existing flame-retardant method is to cover the surface of the filter bag with a polytetrafluoroethylene (PTFE) film to give it flame-retardant properties. Therefore, a film covering device is needed to cover the flame-retardant layer on the surface of the filter bag.

[0003] In the prior art, patent publication number CN202023204986.4 discloses a multifunctional filter cloth coating device, including a body, characterized in that: the body is provided with a smoothing frame disposed on both sides of the filter cloth to smooth the filter cloth, the body is also provided with an adjustment mechanism for controlling the smoothing frame to move along the direction perpendicular to the filter cloth, the smoothing frame is provided with a cleaning component for cleaning the filter cloth, the end of the smoothing frame is provided with a positioning component for fixing the cleaning component, and the body is also provided with a dust collection device for vacuuming;

[0004] The above-mentioned filter cloth coating device has some problems in actual use. If there are wrinkles on the surface of the filter cloth before it enters the device, the filter cloth and the film cannot be completely adhered when hot-pressed together. Therefore, we propose a temperature-controlled coating device for flame-retardant and anti-static filter bags. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a temperature-controlled film coating device for flame-retardant and anti-static filter bags, which effectively prevents the filter cloth surface from wrinkling during hot pressing and failing to fully adhere to the film, thus effectively solving the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a temperature-controlled film-coating device for flame-retardant and antistatic filter bags, comprising a workbench and a smoothing mechanism;

[0007] Workbench: A feeding hood is provided on the right side of its upper surface, a film covering hood is provided on the left side of the feeding hood, and a discharge port is provided on the lower side of the left side wall of the film covering hood;

[0008] The smoothing mechanism includes a fixed frame, an extension frame, a smoothing frame, and smoothing rollers. The fixed frame is fixedly connected to the upper side wall of the feed hood. An extension frame is fixedly connected to the middle right side of the fixed frame. Smoothing frames are symmetrically rotatably connected to the ends of the extension frames. Smoothing rollers are rotatably connected inside the two smoothing frames. A filter cloth flattening roller is rotatably connected between the front and rear inner walls of the fixed frame. A middle flattening head is fixedly connected to the middle right side of the lower surface of the fixed frame, which effectively prevents wrinkles from forming on the surface of the filter cloth during hot pressing, thus preventing it from fully adhering to the film.

[0009] Furthermore, it also includes a controller, which is located on the rear side of the feed hood. The input terminal of the controller is electrically connected to an external power source to control the normal operation of each electrical component.

[0010] Furthermore, the leveling mechanism also includes a slide groove, a lead screw, a slider, a bidirectional rotary seat, and a connecting rod. The slide groove is located in the middle of the upper surface of the extension frame. A slider is slidably connected inside the slide groove. A bidirectional rotary seat is provided on the upper side of the slider. A connecting rod is symmetrically rotatably connected inside the bidirectional rotary seat. The ends of the two connecting rods are rotatably connected to the middle of the leveling frame located on the same side. A lead screw is rotatably connected inside the slide groove. The external thread surface of the lead screw is threadedly connected to the middle of the slider, thereby realizing the function of pushing the leveling frame.

[0011] Furthermore, a motor is provided on the left side of the extension frame. The output shaft of the motor is fixedly connected to the left end of the lead screw, and the input end of the motor is electrically connected to the output end of the controller to drive the lead screw to rotate.

[0012] Furthermore, a cylinder is provided on the upper side of the film covering, an upper hot press plate is provided at the telescopic end of the cylinder, and a lower hot press plate is provided on the lower side wall of the film covering. The upper and lower hot press plates are positioned correspondingly. The input ends of the upper and lower hot press plates are electrically connected to the output end of the controller, and the air inlet of the cylinder is connected to an external air pump to realize the function of hot press film covering.

[0013] Furthermore, it also includes a film feeding mechanism, which includes a conveying frame, a film guide roller, an unwinding roller, and a material gathering roller. The conveying frame is fixedly connected between the feeding hood and the film covering hood. A film guide roller is rotatably connected to the middle of the front and rear inner walls of the conveying frame. An unwinding roller is rotatably connected to the upper side of the front side wall of the conveying frame. A material gathering roller is rotatably connected to the lower side of the front and rear inner walls of the conveying frame, thereby realizing the function of supplying flame-retardant film.

[0014] Furthermore, a limiting groove is provided on the upper side of the slide groove, and a protective plate is provided on the upper side of the slider. The outer surface of the protective plate is slidably connected to the inside of the limiting groove to realize the function of sealing the screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The temperature control coating device for this flame-retardant and antistatic filter bag has the following advantages:

[0016] This temperature-controlled coating device uses a screw-driven structure and a triangular linkage structure to drive two smoothing rollers to open and close. This allows the smoothing rollers to smooth the surface of the filter cloth conveyor line entering the device, smoothing out any wrinkles. Then, the filter cloth flattening roller and the material gathering roller bond the film to the filter cloth, effectively preventing the problem of wrinkles on the filter cloth surface during hot pressing that prevent complete bonding with the film. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the feed hood and the film covering hood of this utility model;

[0019] Figure 3 This is a schematic diagram of the smoothing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the leveling mechanism of this utility model.

[0021] In the diagram: 1. Workbench, 2. Feed hood, 3. Film covering hood, 4. Controller, 5. Smoothing mechanism, 51. Fixing frame, 52. Extension frame, 53. Slide groove, 54. Lead screw, 55. Slider, 56. Bidirectional rotary seat, 57. Smoothing frame, 58. Smoothing roller, 59. Connecting rod, 6. Motor, 7. Protective plate, 8. Limiting groove, 9. Film conveying mechanism, 91. Conveying frame, 92. Film guide roller, 93. Unwinding roller, 94. Material gathering roller, 10. Cylinder, 11. Upper hot press plate, 12. Lower hot press plate, 13. Filter cloth flattening roller, 14. Middle flattening head. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This embodiment provides a technical solution: a temperature-controlled film-coating device for flame-retardant and antistatic filter bags, including a workbench 1 and a smoothing mechanism 5;

[0024] Workbench 1: A feeding hood 2 is located on the right side of its upper surface, and a film covering hood 3 is located on the left side of the feeding hood 2. A discharge port is located on the lower side of the left side wall of the film covering hood 3. It also includes a controller 4, which is located behind the feeding hood 2. The input terminal of the controller 4 is electrically connected to an external power source. A cylinder 10 is located on the upper side of the film covering hood 3. An upper hot press plate 11 is located at the telescopic end of the cylinder 10. A lower hot press plate 12 is located on the lower side wall of the film covering hood 3. The upper and lower hot press plates 11 and 12 are vertically aligned. The input terminals of the upper and lower hot press plates 11 and 12 are electrically connected to the output terminal of the controller 4. An external air pump is connected to the air inlet of the cylinder 10. It also includes a film conveying mechanism 9. The material conveying mechanism 9 includes a conveying frame 91, a film guide roller 92, an unwinding roller 93, and a material gathering roller 94. The conveying frame 91 is fixedly connected between the feeding hood 2 and the film covering hood 3. The film guide roller 92 is rotatably connected to the middle of the front and rear inner walls of the conveying frame 91. The unwinding roller 93 is rotatably connected to the upper side of the front side wall of the conveying frame 91. The material gathering roller 94 is rotatably connected to the lower side of the front and rear inner walls of the conveying frame 91. When the temperature-controlled film covering device is needed, the polytetrafluoroethylene film roll can be put on the unwinding roller 93. Then, the unwinding roller 93 is connected to the external unwinding drive equipment. The film is then unwound and passed through the film guide roller 92 in sequence, and conveyed into the film covering hood 3.

[0025] The leveling mechanism 5 includes a fixed frame 51, an extension frame 52, a leveling frame 57, and a leveling roller 58. The fixed frame 51 is fixedly connected to the upper side wall of the feed hood 2. The extension frame 52 is fixedly connected to the middle right side of the fixed frame 51. The leveling frame 57 is symmetrically rotatably connected to the end of the extension frame 52. The leveling roller 58 is rotatably connected inside the two leveling frames 57 respectively. The filter cloth flattening roller 13 is rotatably connected between the front and rear inner walls of the fixed frame 51. The upper surfaces of the two leveling frames 57 form a 30-degree angle with the horizontal plane. The middle leveling head 14 is fixedly connected to the middle right side of the lower surface of the fixed frame 51. The leveling mechanism 5 also includes a slide groove 53, a lead screw 54, a slider 55, a bidirectional rotary seat 56, and a connecting rod 59. The slide groove 53 is opened in the middle of the upper surface of the extension frame 52. A slider 55 is slidably connected inside the slide groove 53. A bidirectional rotary seat 56 is provided on the upper side of the slider 55. Connecting rods 59 are symmetrically rotatably connected inside the bidirectional rotary seat 56. The ends of the two connecting rods 59 are rotatably connected to the middle of the leveling frame 57 located on the same side. A lead screw 54 is rotatably connected inside the slide groove 53. The external thread surface of the lead screw 54 is threadedly connected to the middle of the slider 55. A motor 6 is provided on the left side of the extension frame 52. The output shaft of the motor 6 is fixedly connected to the left end of the lead screw 54. The input end of the motor 6 is electrically connected to the output end of the controller 4. A limiting groove 8 is provided on the upper side of the slide groove 53. A protective plate 7 is provided on the upper side of the slider 55. The outer surface of the protective plate 7 is slidably connected to the inside of the limiting groove 8. When the slider 55 slides in the slide groove 53, the protective plate 7... It will also slide synchronously inside the limiting groove 8, and the length of the protective plate 7 is much shorter than that of the limiting groove 8. When the protective plate 7 slides, it seals the slide groove 53 in real time to prevent dirt from entering the slide groove 53 and contaminating the lead screw 54. Then, the filter cloth conveyor line is conveyed from the right into the feed hood 2. At this time, it is necessary to judge the size of the filter cloth and adjust the controller 4 according to the size of the filter cloth. The motor 6 runs, and the output shaft of the motor 6 rotates in both directions, thereby driving the lead screw 54 to rotate in both directions, thereby driving the slider 55 to adjust its left and right position in the slide groove 53. This allows the two connecting rods 59 to adjust their angle with their left ends as the center. During this process, the two connecting rods 59 push and pull the leveling frame 57, so that the two leveling frames 57 move around the middle of the extension frame 52 as the axis. Angle adjustment occurs during this process, causing the included angle between the two leveling frames 57 to increase or decrease. The adjustment depends on the size of the filter cloth. For larger filter cloths, the included angle between the two leveling frames 57 can be increased, resulting in a larger included angle between the two leveling rollers 58. As the filter cloth passes through the leveling rollers 58, its surface is flattened. For smaller filter cloths, the included angle between the two leveling frames 57 can be decreased, resulting in a smaller included angle between the two leveling rollers 58. This reduces the contact area of ​​the filter cloth as it passes through the leveling rollers 58, allowing even smaller filter cloths to be flattened. The flattened filter cloth then passes through the central flattening head 14 to compensate for any unflattened portions between the two leveling rollers 58. After this flattening process...The filter cloth is then guided a second time by the filter cloth flattening roller 13, and then by the material gathering roller 94. At this point, the film adheres to the upper surface of the filter cloth and is conveyed between the upper hot press plate 11 and the lower hot press plate 12. The controller 4 can then be adjusted to operate the upper and lower hot press plates 11 and 12. When an alternating current is passed through the coils inside the upper and lower hot press plates 11 and 12, an alternating magnetic field is generated. Eddy currents are generated in the hot press plates within this alternating magnetic field. Because the hot press plates themselves have a certain resistance, the eddy currents generate heat across the resistance, thus heating the hot press plates to a specified temperature, specifically between 200 and 300 degrees Celsius. The heating temperature is finely adjusted according to requirements. Then, the external air pump cylinder 10 is extended to fit the upper surface of the film. At this time, the cylinder 10 is adjusted to press the lower hot platen 12 with appropriate pressure. The specific pressure can be adjusted between 0.5 MPa and 2 MPa for one to five minutes. The specific pressure and pressing time can be adjusted according to actual needs. After hot pressing is completed, the extension end of the cylinder 10 is reset, and the upper and lower hot platens 11 and 12 stop heating. The hot-pressed filter cloth is then output to the right from the discharge port and transferred to the external cutting equipment to complete the film coating operation.

[0026] The working principle of the temperature-controlled coating device for flame-retardant and antistatic filter bags provided by this utility model is as follows: When the temperature-controlled coating device is needed, the polytetrafluoroethylene film roll is placed on the unwinding roller 93, and then the unwinding roller 93 is connected to the external unwinding drive equipment. The film is then unwound and passed through the film guide roller 92 in sequence, and fed into the coating cover 3. The filter cloth conveyor line is then fed into the feeding cover 2 from the right. At this time, it is necessary to determine the size of the filter cloth. According to the size of the filter cloth, the controller 4 is adjusted, the motor 6 is turned, and the output shaft of the motor 6 rotates in both directions, thereby driving the lead screw 54 to rotate in both directions, thereby driving the slider 55 to adjust its left and right position in the slide groove 53, thereby making the two connecting rods 5 9. Angle adjustment is performed with its left end as the center. During this process, the two connecting rods 59 push and pull the smoothing frame 57, causing the two smoothing frames 57 to adjust their angle around the middle of the extension frame 52. During this process, the included angle between the two smoothing frames 57 will increase or decrease. At this time, the two smoothing frames 57 are adjusted according to the size of the filter cloth. When the size of the filter cloth is large, the included angle between the two smoothing frames 57 can be increased. At this time, the included angle between the two smoothing rollers 58 also increases, and the filter cloth surface will be flattened once when passing through the smoothing rollers 58. If the size of the filter cloth is small, the included angle between the two smoothing frames 57 can be decreased. At this time, the included angle between the two smoothing rollers 58 also decreases, and the filter cloth surface will be flattened once when passing through the smoothing rollers 58. The contact area of ​​the filter cloth 8 will also be reduced, and smaller filter cloths can also be flattened. At this time, the flattened filter cloth conveyor line passes through the middle flattening head 14 to compensate for the unflattened part between the two flattening rollers 58. After the above flattening, the filter cloth is guided by the filter cloth flattening roller 13 for secondary guidance, and then by the material gathering roller 94. At this time, the film adheres to the upper surface of the filter cloth and is conveyed between the upper hot plate 11 and the lower hot plate 12. At this time, the controller 4 can be adjusted to operate the upper hot plate 11 and the lower hot plate 12. When an alternating current is passed through the coil inside the upper hot plate 11 and the lower hot plate 12, an alternating magnetic field is generated. Eddy currents are generated in the hot plate in the alternating magnetic field. Since the hot plate itself has a certain resistance, the eddy currents Heat is generated on the resistor, causing the hot press plate to heat up to a specified temperature, specifically between 200 and 300 degrees Celsius. The required heating temperature can be finely adjusted as needed. Then, the external air pump cylinder 10 can be adjusted to extend and adhere to the upper surface of the film. At this time, the cylinder 10 is adjusted to press the lower hot press plate 12 with appropriate pressure. The specific pressure can be adjusted to between 0.5 MPa and 2 MPa, and the pressing time can be adjusted according to actual needs. After the hot pressing is completed, the extension end of the cylinder 10 can be reset, and the upper hot press plate 11 and the lower hot press plate 12 stop heating. The filter cloth that has completed the hot pressing is output to the right from the discharge port and transferred to the external cutting equipment to complete the film coating operation.

[0027] It is worth noting that the core chip of the controller 4 disclosed in the above embodiments is a single-chip microcomputer, specifically the STM32. The upper and lower hot press plates 11 and 12 of the motor 6 and cylinder 10 can be freely configured according to the actual application scenario. It is recommended to use a 130BL series servo driver for the motor 6 and a low-friction cylinder of the MQP16-10S model for the cylinder 10. The upper and lower hot press plates 11 and 12 can be customized with electromagnetic induction hot press plates of specified specifications according to processing requirements. The controller 4 controls the operation of the motor 6, the upper and lower hot press plates 11 and 12 of the cylinder 10 using methods commonly used in the prior art.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A temperature-controlled coating device for flame-retardant and antistatic filter bags, characterized in that: Includes a workbench (1) and a leveling mechanism (5); Workbench (1): A feed hood (2) is provided on the right side of its upper surface, a film covering hood (3) is provided on the left side of the feed hood (2), and a discharge port is provided on the lower side of the left side wall of the film covering hood (3). The smoothing mechanism (5) includes a fixed frame (51), an extension frame (52), a smoothing frame (57), and a smoothing roller (58). The fixed frame (51) is fixedly connected to the upper side wall of the feed hood (2). The extension frame (52) is fixedly connected to the middle right side of the fixed frame (51). The end of the extension frame (52) is symmetrically connected to the smoothing frame (57) at the front and rear. The smoothing roller (58) is rotatably connected inside the two smoothing frames (57). The filter cloth flattening roller (13) is rotatably connected between the front and rear inner walls of the fixed frame (51). The middle flattening head (14) is fixedly connected to the middle right side of the lower surface of the fixed frame (51).

2. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 1, characterized in that: It also includes a controller (4), which is located on the rear side of the feed hood (2), and the input terminal of the controller (4) is electrically connected to an external power source.

3. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 2, characterized in that: The smoothing mechanism (5) further includes a slide groove (53), a lead screw (54), a slider (55), a bidirectional rotary seat (56), and a connecting rod (59). The slide groove (53) is located in the middle of the upper surface of the extension frame (52). The slider (55) is slidably connected inside the slide groove (53). The upper side of the slider (55) is provided with a bidirectional rotary seat (56). The connecting rod (59) is symmetrically connected to the inside of the bidirectional rotary seat (56). The ends of the two connecting rods (59) are respectively rotatably connected to the middle of the smoothing frame (57) located on the same side. The lead screw (54) is rotatably connected inside the slide groove (53). The external thread surface of the lead screw (54) is threadedly connected to the middle of the slider (55).

4. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 3, characterized in that: A motor (6) is provided on the left side of the extension frame (52). The output shaft of the motor (6) is fixedly connected to the left end of the lead screw (54). The input end of the motor (6) is electrically connected to the output end of the controller (4).

5. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 2, characterized in that: The upper side of the film cover (3) is provided with a cylinder (10), the telescopic end of the cylinder (10) is provided with an upper hot plate (11), the lower side wall of the film cover (3) is provided with a lower hot plate (12), the upper hot plate (11) and the lower hot plate (12) are vertically aligned, the input ends of the upper hot plate (11) and the lower hot plate (12) are electrically connected to the output end of the controller (4), and the air inlet of the cylinder (10) is externally connected to an external air pump.

6. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 1, characterized in that: It also includes a film feeding mechanism (9), which includes a conveying frame (91), a film guide roller (92), an unwinding roller (93), and a material gathering roller (94). The conveying frame (91) is fixedly connected between the feeding hood (2) and the film covering hood (3). The film guide roller (92) is rotatably connected between the front and rear inner walls of the conveying frame (91). The unwinding roller (93) is rotatably connected to the upper side of the front side wall of the conveying frame (91). The material gathering roller (94) is rotatably connected to the lower side of the front and rear inner walls of the conveying frame (91).

7. The temperature-controlled coating device for a flame-retardant and antistatic filter bag according to claim 3, characterized in that: The upper side of the slide groove (53) is provided with a limiting groove (8), and the upper side of the slider (55) is provided with a protective plate (7). The outer surface of the protective plate (7) is slidably connected to the inside of the limiting groove (8).

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