Electrostatic dust collection equipment for PET foam board production

Abstract

The invention discloses electrostatic dust collection equipment for PET foam board production, and relates to the technical field of PET foam board processing. Comprising an upper dust collection cover, a lower dust collection cover, cyclone dust collectors and a trimming mechanism, the upper dust collection cover and the lower dust collection cover are symmetrically arranged up and down, a gap is reserved for a PET foam plate to penetrate through, the two cyclone dust collectors are arranged and installed on the upper dust collection cover and the lower dust collection cover correspondingly, each cyclone dust collector comprises a base, and a first fixing cylinder is installed at the top of each base; a second fixing cylinder is installed on the top of the first fixing cylinder. The upper dust collection cover and the lower dust collection cover which are symmetrically arranged up and down are matched with the cyclone dust collector and the electrostatic ion rod, deep cleaning and electrostatic elimination can be conducted on the surface of the PET foam board, secondary pollution of free foreign matter in the atmosphere is prevented, the second fixing cylinder can be picked as needed to adjust the airflow density, and the mode that the second fixing cylinder is installed on the fixing rail enables a pressure supply system to be simple and convenient to use is achieved. Installation is simple, maintenance is convenient, and the distance can be adjusted at any time.

Description

Technical Field

[0001] The invention relates to the technical field of PET foam board processing, in particular to electrostatic dust removal equipment used for PET foam board production. Background Art

[0002] After cutting, PET foam board will produce various dust and debris. If not cleaned in time, these impurities may affect the subsequent processing and performance of the board, and make it difficult to better combine the board with other materials in subsequent coating, gluing and other processes to improve product quality and appearance.

[0003] The existing cyclone electrostatic dust removal equipment has a single dust removal mode, the position of the air outlet nozzle is fixed and difficult to adjust, and the air supply and pressure circuit is complicated. After a failure occurs, it is difficult for maintenance personnel to get started and maintenance is difficult. In view of this situation, the present invention proposes a new solution. Summary of the invention

[0004] The object of the present invention is to provide an electrostatic dust removal device for the production of PET foam boards to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an electrostatic dust removal device for the production of PET foam boards, comprising: An upper dust hood, a lower dust hood, a cyclone dust collector and a finishing mechanism; The upper dust hood and the lower dust hood are symmetrically arranged up and down and a gap is left for the PET foam plate to pass through. Two groups of cyclone dust collectors are arranged, and the two groups of cyclone dust collectors are respectively installed on the upper dust hood and the lower dust hood; The cyclone dust collector includes a base, a fixed cylinder one is installed on the top of the base, a fixed cylinder two is installed on the top of the fixed cylinder one, the fixed cylinder one and the fixed cylinder two are coaxially arranged and internally connected, two arms are fixed on the surface of the fixed cylinder one and the fixed cylinder two, a cyclone ball is rotatably installed at the end of each arm, and the cyclone ball is driven to rotate by supplying pressure to the inside of the base and spraying airflow outward to achieve sweeping of the plate surface.

[0006] Further to this scheme, a through hole penetrating the top and bottom of the base is opened in the middle of the base, and a threaded hole is also provided on the top of the base. The bottom of the fixed tube one is screwed to the top of the base, and a pipe connecting piece is fixed in the middle of the fixed tube one. The pipe connecting piece passes through the bottom of the fixed tube one to the top of the fixed tube one and is exposed to the outside. The exposed part is provided with threads, and the bottom of the fixed tube two is screwed to the threads.

[0007] Further to this scheme, chamber one and chamber two are respectively opened in the middle of the fixed cylinder one and the fixed cylinder two, a pipe connector is located at one place of the chamber and a bypass hole is opened, chamber one and chamber two are connected through the pipe connector, wherein a clamping tube is fixed to the surface of each cyclone ball, the clamping tube passes through the support arm into chamber one and chamber two, and a blade is fixed to the end surface of each clamping tube.

[0008] Furthermore, regarding this solution, a bearing is provided at the connection between the support arm and the cyclone ball, a double-ended pipe is fixed at the bottom of the base, the double-ended pipe is connected to the through hole, and each cyclone dust collector is connected by connecting a hose between the double-ended pipes.

[0009] Furthermore, regarding this solution, clamping plates are provided on both sides of the base, a gap is provided between the clamping plates and the base, a frame arm is installed in the gap, rollers are rotatably installed at both ends of the frame arm, the rollers are in contact with the plate, and when the cyclone dust collector is located below, the height of the roller is at least higher than the top height of the fixed cylinder 2.

[0010] Further to this solution, a connecting plate is provided between the clamping plate and the base, a second spring is provided between the connecting plate and the frame arm, a slot is provided on the clamping plate, and a fixing screw is provided at the slot that passes through the connecting plate and rests against one side of the base.

[0011] Furthermore, regarding this scheme, electrostatic ion rods are provided on both sides of each group of cyclone dust collectors, a roller line is installed on one side of the lower dust hood for loading the plates, and a trimming mechanism is installed on one side of the roller line of the upper and lower dust hoods. The trimming mechanism polishes and trims the surface of the plate to improve the surface finish of the plate.

[0012] Furthermore, regarding this solution, the upper dust hood and the lower dust hood have the same specifications, the upper dust hood includes an outer cover and an inner cover, a gap is left between the inner cover and the outer cover on both sides, negative pressure connecting pipes are installed on the top of the upper dust hood and the bottom of the lower dust hood, the negative pressure connecting pipes are connected to the vacuum suction machine, and linear control modules are provided at both ends of the upper dust hood and the lower dust hood for adjusting the distance between the upper dust hood and the lower dust hood.

[0013] Furthermore, regarding this scheme, fixed rails are installed inside the upper dust hood and the lower dust hood, and the fixed rails are installed between the inner walls at both ends of the upper dust hood and the lower dust hood. Each group of cyclone dust collectors is installed on the fixed rails at equal intervals, and fixed frames are fixed at both ends of the two fixed rails. The electrostatic ion rods are installed on both sides of each group of cyclone dust collectors through the fixed frames.

[0014] Further regarding this scheme, the trimming mechanism includes a cover shell, which is opened facing the plate, and both ends of the cover shell are provided with slide grooves, side plates are slidably connected to the slide grooves, and the tops of the side plates are located at right angles between the inner walls on both sides of the slide grooves, and a grinding roller is rotatably installed between the two side plates, and the grinding roller contacts the surface of the plate for polishing and trimming the plate, a limit rod is fixed at the top of the side plate, and convex plates are also fixed at both ends of the cover shell, the limit rod passes through the convex plate and is slidably connected to the convex plate, and a spring 1 is also sleeved on the surface of the limit rod, and the spring 1 is located between the convex plate and the top of the side plate, and a plurality of branch pipes are installed on the top of the cover shell, and the branch pipes are connected to the negative pressure connecting pipes of the upper dust hood and the lower dust hood.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The electrostatic dust removal equipment used for the production of PET foam boards can deeply clean and eliminate static electricity on the surface of PET foam boards through the upper and lower dust hoods symmetrically arranged up and down, in conjunction with a cyclone dust collector and an electrostatic ion rod, to prevent secondary pollution from atmospheric free foreign matter. The fixed cylinder can be removed as needed to adjust the airflow density. The method of installing it on a fixed rail makes the pressure supply system simple, the installation is simple, the maintenance is convenient, and the spacing can be adjusted at any time.

[0016] At the same time, the finishing mechanism is set up to polish and trim the surface of the plate, improve the surface finishing degree of the plate, and peel off dust particles and other attachments on the surface of the plate in advance, reducing the workload of the dust removal equipment and improving the cleaning quality; the cyclone dust collector has a unique structure, and the rotation of the cyclone ball is achieved by the air source, which has high stability and reduces the frequency of equipment failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position structure of the cyclone dust collector of the present invention; Figure 3 It is a schematic diagram of the cross-sectional view structure of the present invention; Figure 4 It is a schematic diagram of the coordination of the positions of the cyclone dust collector and the electrostatic ion rod of the present invention; Figure 5 It is a schematic diagram of the structure of the cyclone dust collector of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the cyclone dust collector of the present invention; Figure 7 It is a schematic diagram of the structure of the trimming mechanism of the present invention.

[0018] In the figure: 1, upper dust hood; 101, outer cover; 102, inner cover; 103, negative pressure connecting pipe; 2, lower dust hood; 3, linear control module; 4, roller line; 5, finishing mechanism; 501, cover; 502, branch pipe; 503, side plate; 504, grinding roller; 505, spring 1; 506, limit rod; 507, driving source; 6, fixed rail; 7, cyclone dust collector; 701, base; 702, fixed cylinder 1; 703 , fixing cylinder 2; 704, support arm; 705, cyclone ball; 706, splint; 707, spring 2; 708, fixing screw; 709, notch; 710, frame arm; 711, roller; 712, double-ended pipe; 713, through hole; 714, pipe connector; 715, clamp pipe; 716, paddle; 717, bearing; 718, chamber 1; 719, chamber 2; 720, bypass hole; 8, fixing frame; 9, electrostatic ion rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 As shown, the present invention provides a technical solution: an electrostatic dust removal device for the production of PET foam boards, comprising an upper dust hood 1, a lower dust hood 2, a linear control module 3, a cyclone dust collector 7 and an electrostatic ion rod 9, the upper dust hood 1 and the lower dust hood 2 are symmetrically arranged up and down and a gap is arranged between the two, and the PET foam board passes through the gap, and the cyclone dust collector 7 is provided with two groups, and the two groups of cyclone dust collectors 7 are respectively installed on the upper dust hood 1 and the lower dust hood 2, when the foam board passes through the gap between the upper dust hood 1 and the lower dust hood 2, the cyclone dust collector 7 can be used to clean the surface of the foam board For dust removal and finishing, two groups of electrostatic ion rods 9 are also provided, each group includes two electrostatic ion rods 9, and the two electrostatic ion rods 9 of each group are respectively installed on both sides of each group of cyclone dust collectors 7. The cyclone dust collectors 7 generate a strong impact airflow to drive the gas filled with a large number of positive and negative ions in the equipment to deeply clean the surface of the product. A roller line 4 is installed on one side of the electrostatic dust removal equipment for loading the plate. The upper dust hood 1 and the lower dust hood 2 are located on one side of the roller line 4 and are installed with a finishing mechanism 5. The finishing mechanism 5 polishes and finishes the surface of the plate to improve the surface finish of the plate.

[0021] The PET sheet product runs from the drum line 4 to the entrance of the electrostatic dust removal equipment, and the sensor (not shown) detects the signal of the product passing. After that, when the product passes through the area where the electrostatic ion rod 9 is placed, the electrostatic ion rod 9 will eliminate the unsaturated electrostatic factors on the surface and neutralize or reduce the adsorption force caused by static electricity. Then the product enters the cleaning area, and the cyclone dust collector 7 uses cyclone pulsation cleaning to blow up pollutants on the surface of the product using the strong airflow of the cyclone, and is sucked away by the upper dust hood 1 and the lower dust hood 2. When the cleaning area is completed, the second electrostatic ion rod 9 near the unloading end will eliminate static electricity on the surface of the product again to consolidate the cleaning effect of the box body and prevent secondary pollution of free foreign matter in the atmosphere.

[0022] like Figure 3 and Figure 4 As shown, the upper dust hood 1 and the lower dust hood 2 have the same specifications. Taking the upper dust hood 1 as an example, the upper dust hood 1 includes an outer cover 101 and an inner cover 102. A gap is left between the inner cover 102 and the outer cover 101 on both sides, and the cleaned dust and the like are discharged from the cover body through the gap. Negative pressure connecting pipes 103 are installed on the top of the upper dust hood 1 and the bottom of the lower dust hood 2. A vacuum suction machine is installed at the negative pressure connecting pipe 103. The vacuum suction machine generates negative pressure and high-speed suction ventilation to bring the turbid gas with dust particles in the dust hood to the outside, which is collected by the dust collection and filtering system. Two linear control modules 3 are provided and are respectively installed at both ends of the upper dust hood 1 to adjust the distance between the upper dust hood 1 and the lower dust hood 2 to adapt to plates of different thicknesses.

[0023] Fixed rails 6 are installed inside the upper dust hood 1 and the lower dust hood 2. The fixed rails 6 are installed inside the upper dust hood 1 and the lower dust hood 2. Each group of cyclone dust collectors 7 are equidistantly installed on the fixed rails 6. Fixed frames 8 are fixed at both ends of the two fixed rails 6. Electrostatic ion rods 9 are installed on both sides of each group of cyclone dust collectors 7 through the fixed frames 8.

[0024] like Figure 5 As shown, in order to ensure the smooth implementation of the above embodiment, it is necessary to understand that the cyclone dust collector 7 includes a base 701, a fixed cylinder 1 702 is installed on the top of the base 701, a fixed cylinder 2 703 is installed on the top of the fixed cylinder 1 702, the fixed cylinder 1 702 and the fixed cylinder 2 703 are coaxially arranged and internally connected, two arms 704 are fixed on the surface of the fixed cylinder 1 702 and the fixed cylinder 2 703, and a cyclone ball 705 is rotatably installed at the end of each arm 704. The cyclone ball 705 is spherical, which can reduce the friction with the air during rotation. A number of nozzles are arranged on the surface of the sphere, and these nozzles are intermittently distributed. During the rotation of the cyclone ball 705, a strong pulsating airflow can be generated on the surface of the plate to blow up the pollutants, and the cyclone ball 705 is driven to rotate and spray airflow outward by supplying pressure to the inside of the base 701, thereby achieving the blowing of the plate surface.

[0025] like Figure 5 and Figure 6 As shown, in order to realize the above process, a through hole 713 is opened in the middle of the base 701 and passes through from top to bottom. A threaded hole is set at the top of the base 701. The fixing cylinder 1 702 is screwed and fixed at the top of the base 701. A pipe connector 714 is fixed in the middle of the fixing cylinder 1 702. The pipe connector 714 passes through the bottom of the fixing cylinder 1 702 to the top of the fixing cylinder 1 702 and is exposed to the outside. The exposed part is provided with a thread. The bottom of the fixing cylinder 2 703 is screwed to the thread. The middle of the fixed cylinder 1 702 and the fixed cylinder 2 703 are respectively provided with a chamber 1 718 and a chamber 2 719, and the pipe connector 714 is located at the chamber 1 718 and has a bypass hole 720, and the chamber 1 718 and the chamber 2 719 are connected through the pipe connector 714, wherein a clamping tube 715 is fixed on the surface of each cyclone ball 705, and the clamping tube 715 of each cyclone ball 705 passes through the support arm 704 until it reaches the corresponding chamber 1 718 and chamber 2 719, and the end surface of each clamping tube 715 The paddles 716 are fixed to the base 701. In this case, when pressure is supplied to the base 701, air passes through the through hole 713 and enters the chamber 1 718 and the chamber 2 719, and is ejected from the cyclone ball 705. In the process of air circulation, since the paddles 716 rotate under the condition of air circulation, when pressure is supplied to the base 701, the cyclone ball 705 can be driven to rotate and eject airflow to clean the surface of the plate. In this way, the rotation of the cyclone ball 705 depends on the air source to realize rotation, reducing the electronic equipment. With the intervention of , the stability is higher and the frequency of equipment failure is reduced. It should be noted that bearings 717 are provided at the connection between the support arm 704 and the cyclone ball 705 and on the surface of the clamping tube 715 to reduce the friction of the cyclone ball 705 during rotation. In order to realize the pressure supply to the base 701, a double-headed pipe 712 is fixed at the bottom of the base 701, and the double-headed pipe 712 is connected to the through hole 713. Each cyclone dust collector 7 is connected by connecting a hose between the double-headed pipes 712 to achieve communication.

[0026] like Figure 6As shown, the fixed cylinder 1 702 and the fixed cylinder 2 703 rely on the pipe connector 714 to achieve connection and fixation, that is, the fixed cylinder 2 703 can be directly removed from the fixed cylinder 1 702 when it is not needed, and the top of the pipe connector 714 can be sealed by a nut. The removal step is simple and the operation is convenient. In addition, the length of the support arm 704 on the fixed cylinder 2 703 is greater than that on the fixed cylinder 1 702. Therefore, the cyclone dust collector 7 can provide a denser airflow, and the airflow density of the cyclone dust collector 7 can be adjusted as needed. The air dust collector 7 is inserted into the rail groove of the fixed rail 6 through the double-ended pipe 712 at the bottom of the base 701. That is to say, the cyclone dust collectors 7 are first connected in sequence through hoses during installation, and then the cyclone dust collectors 7 are installed on the fixed rail 6 in sequence. In this case, the double-ended pipe 712 and the hose at the bottom of the cyclone dust collector 7 are hidden in the rail groove of the fixed rail 6. Each cyclone dust collector 7 shares an air circuit system and a pressure supply system. The installation method is simple, maintenance is convenient, and the distance between the cyclone dust collectors 7 can be adjusted at any time.

[0027] When the plate passes between the upper dust hood 1 and the lower dust hood 2, there is a certain gap between the cyclone ball 705 and the plate to allow the airflow to escape normally, and the plate needs to be supported while reducing the contact area with the plate so that the surface of the plate can fully contact with the airflow. Clamps 706 are arranged on both sides of the base 701, and a gap is arranged between the clamps 706 and the base 701. A frame arm 710 is installed in the gap. Rollers 711 are rotatably installed at both ends of the frame arm 710, and the rollers 711 are in contact with the plate. The rollers 711 at the bottom are used to provide support for the plate, and the rollers 711 at the top can play a certain stabilizing role on the plate when the plate passes by. At the same time, to ensure the normal dust removal work of the cyclone dust collector 7, when the cyclone dust collector 7 is located below, the height of the roller 711 is at least higher than the top height of the fixed cylinder 703 to avoid scratches between the plate and the cyclone dust collector 7.

[0028] like Figure 6 As shown, a connecting plate is provided between the clamping plate 706 and the base 701, a spring 2 707 is provided between the connecting plate and the arm 710, a slot 709 is provided on the clamping plate 706, and a fixing screw 708 is provided at the slot 709, which passes through the connecting plate and rests on one side of the base 701. Through the setting of the spring 2 707, the arm 710 can adjust the height, and after the position of the arm 710 is fixed, it also has a certain passive adjustment space, so that when the thickness of the conveyed plate changes and the change is small, it can also play the effect of taking over and conveying the plate.

[0029] like Figure 7As shown, the finishing mechanism 5 includes a cover shell 501, which is opened facing the plate, and both ends of the cover shell 501 are provided with slide grooves, and side plates 503 are slidably connected to the slide grooves. The tops of the side plates 503 are located at right angles between the inner walls on both sides of the slide grooves. A grinding roller 504 is rotatably installed between the two side plates 503, and the grinding roller 504 contacts the surface of the plate to polish and trim the plate. A driving source 507 is installed at one of the side plates 503 to drive the grinding roller 504 to rotate, and a limiting rod 506 is fixed at the top of the side plate 503. Convex plates are also fixed at both ends of the cover shell 501. The limiting rod 506 passes through the convex plate and is slidably connected to the convex plate, and a spring 505 is also sleeved on the surface of the limiting rod 506. The spring 505 is located between the convex plate and the side plate 503. Between the top, when the plate passes through the roller line 4 and enters the electrostatic dust removal equipment, the surface of the plate is polished and trimmed by the grinding roller 504, and a large number of dust particles adhering to the surface of the plate are peeled off the surface of the plate in advance. A number of branch pipes 502 are installed on the top of the cover shell 501. The branch pipes 502 are connected to the negative pressure connecting pipes 103 of the upper dust hood 1 and the lower dust hood 2. The vacuum suction machine also acts on the cover shell 501 when exhausting the inside of the cover body. When the plate enters between the upper dust hood 1 and the lower dust hood 2, a large amount of attachments on its surface are processed in advance, especially some adhesive foreign matter, which can be peeled off by the trimming mechanism 5, which is convenient for the electrostatic dust removal equipment to handle, can reduce the workload of the dust removal equipment, and improve the cleaning quality.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. An electrostatic dust removal device for the production of PET foam boards, characterized in that: include: An upper dust hood (1), a lower dust hood (2), a cyclone dust collector (7) and a trimming mechanism (5); The upper dust hood (1) and the lower dust hood (2) are symmetrically arranged in the upper and lower parts and leave a gap for the PET foam plate to pass through. Two groups of cyclone dust collectors (7) are arranged, and the two groups of cyclone dust collectors (7) are respectively installed on the upper dust hood (1) and the lower dust hood (2); The cyclone dust collector (7) comprises a base (701), a fixed cylinder 1 (702) is mounted on the top of the base (701), a fixed cylinder 2 (703) is mounted on the top of the fixed cylinder 1 (702), the fixed cylinder 1 (702) and the fixed cylinder 2 (703) are coaxially arranged and internally connected, two arms (704) are fixed on the surface of the fixed cylinder 1 (702) and the fixed cylinder 2 (703), and a cyclone ball (705) is rotatably mounted at the end of each arm (704), and by supplying pressure to the inside of the base (701), the cyclone ball (705) is driven to rotate and eject airflow outward, thereby achieving the blowing of the plate surface.

2. The electrostatic dust removal device for PET foam board production according to claim 1, characterized in that: A through hole (713) is provided in the middle of the base (701) and passes through the top and bottom of the base (701). A threaded hole is also provided at the top of the base (701). The bottom of the fixing tube (702) is screwed to the top of the base (701). A pipe connector (714) is fixed in the middle of the fixing tube (702). The pipe connector (714) passes through the bottom of the fixing tube (702) to the top of the fixing tube (702) and is partially exposed to the outside. The exposed part is provided with threads. The bottom of the fixing tube (703) is screwed to the threads.

3. The electrostatic dust removal device for PET foam board production according to claim 2, characterized in that: The middle parts of the fixed cylinder 1 (702) and the fixed cylinder 2 (703) are respectively provided with a chamber 1 (718) and a chamber 2 (719); a pipe connector (714) is provided with a bypass hole (720) at the chamber 1 (718); the chamber 1 (718) and the chamber 2 (719) are connected via the pipe connector (714); a clamping tube (715) is fixed on the surface of each cyclone ball (705); the clamping tube (715) passes through the support arm (704) and reaches the chamber 1 (718) and the chamber 2 (719); and a paddle (716) is fixed on the end surface of each clamping tube (715).

4. The electrostatic dust removal device for PET foam board production according to claim 3 is characterized in that: A bearing (717) is provided at the connection between the support arm (704) and the cyclone ball (705); a double-ended pipe (712) is fixed to the bottom of the base (701); the double-ended pipe (712) is connected to the through hole (713); and each cyclone dust collector (7) is connected to each other by connecting a hose between the double-ended pipes (712).

5. The electrostatic dust removal device for PET foam board production according to claim 4, characterized in that: Clamps (706) are provided on both sides of the base (701), a gap is provided between the clamps (706) and the base (701), a frame arm (710) is installed in the gap, rollers (711) are rotatably installed at both ends of the frame arm (710), the rollers (711) are in contact with the plate, and when the cyclone dust collector (7) is located at the bottom, the height of the rollers (711) is at least higher than the top height of the second fixed cylinder (703).

6. The electrostatic dust removal device for PET foam board production according to claim 5, characterized in that: A connecting plate is provided between the clamping plate (706) and the base (701), a second spring (707) is provided between the connecting plate and the frame arm (710), a notch (709) is provided on the clamping plate (706), and a fixing screw (708) is provided at the notch (709) and passes through the connecting plate to abut against one side of the base (701).

7. The electrostatic dust removal device for PET foam board production according to claim 1, characterized in that: Both sides of each group of cyclone dust collectors (7) are provided with electrostatic ion rods (9); a roller line (4) is installed on one side of the lower dust hood (2) for loading the plate; a finishing mechanism (5) is installed on one side of the upper dust hood (1) and the lower dust hood (2) located on the roller line (4); the finishing mechanism (5) polishes and finishes the surface of the plate to improve the surface finish of the plate.

8. The electrostatic dust removal device for PET foam board production according to claim 1, characterized in that: The upper dust hood (1) and the lower dust hood (2) have the same specifications. The upper dust hood (1) comprises an outer hood (101) and an inner hood (102). A gap is left between the inner hood (102) and the outer hood (101) on both sides. Negative pressure connecting pipes (103) are installed at the top of the upper dust hood (1) and the bottom of the lower dust hood (2). The negative pressure connecting pipes (103) are connected to a vacuum suction machine. Linear control modules (3) are arranged at both ends of the upper dust hood (1) and the lower dust hood (2) for adjusting the distance between the upper dust hood (1) and the lower dust hood (2).

9. The electrostatic dust removal device for PET foam board production according to claim 1, characterized in that: The upper dust hood (1) and the lower dust hood (2) are both provided with fixed rails (6), the fixed rails (6) being installed between the inner walls at both ends of the upper dust hood (1) and the lower dust hood (2), each group of cyclone dust collectors (7) being installed on the fixed rails (6) at equal intervals, fixed frames (8) being fixed at both ends of the two fixed rails (6), and electrostatic ion rods (9) being installed on both sides of each group of cyclone dust collectors (7) via the fixed frames (8).

10. The electrostatic dust removal device for PET foam board production according to claim 1, characterized in that: The trimming mechanism (5) comprises a cover (501), the cover (501) is opened facing the plate, and both ends of the cover (501) are provided with a slide groove, the slide groove is slidably connected with a side plate (503), the top of the side plate (503) is located at a right angle between the inner walls of the two sides of the slide groove, a grinding roller (504) is rotatably installed between the two side plates (503), the grinding roller (504) is in contact with the surface of the plate for polishing and trimming the plate, and a grinding roller (504) is fixed at the top of the side plate (503) A limit rod (506), convex plates are fixed at both ends of the cover shell (501), the limit rod (506) passes through the convex plate and is slidably connected to the convex plate, and a spring (505) is sleeved on the surface of the limit rod (506), and the spring (505) is located between the convex plate and the top of the side plate (503). A plurality of branch pipes (502) are installed on the top of the cover shell (501), and the branch pipes (502) are connected to the negative pressure connecting pipes (103) of the upper dust hood (1) and the lower dust hood (2).

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