Anti-static adsorption PVC foam board cutting equipment

Abstract

The invention discloses PVC foam board cutting equipment capable of preventing electrostatic adsorption, and relates to the technical field of board cutting, in the cutting period, two close shear plates always generate oblique outward thrust on a PVC foam board so as to relieve the situation that the foam board tends to close and move in the direction of a cutter due to friction force in the cutting process, and the cutting efficiency of the PVC foam board is improved. The friction resistance between the material and the cutter can be reduced, and the adhesion phenomenon caused by friction heat in the cutting process can be reduced by applying oblique outward thrust on the two sides of the notch direction; during the fast closing period, fast upward airflow can be generated in the space between the two electrostatic adsorption plates to drive foam-shaped sweeps which are not attracted by static electricity in the space to upwards surge into the air exhaust top cover, and suction force brought by work of an air exhauster exists in the air exhaust top cover; therefore, the upward-rising sweeps can be smoothly pumped into the detachable filter element by the air exhauster to be collected, and the effect of enhancing waste discharge in cooperation with the air exhauster is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plate cutting, in particular to anti-static adsorption PVC foam plate cutting equipment. Background Art

[0002] PVC foam board is a multifunctional polymer material with many advantages, such as light weight, easy handling, transportation and installation, good impact resistance, flexibility, chemical resistance and UV radiation resistance, ability to withstand harsh environmental conditions and excellent moisture resistance, non-absorbent, helps prevent deformation, decay and degradation, very suitable for wet or humid environments, etc. However, the relatively excellent lightness and excellent flexibility of PVC foam board during transportation and installation also have two sides in practical applications; For example, the lightness and flexibility of PVC foam board are reflected in "easy to deform, melt and stick" when cutting: When cutting a soft PVC foam board with a certain thickness, the high-speed friction between the side of the cutter and the cut surface will induce friction heat, causing the cut surface material to melt and stick, causing plastic deformation of the material and uneven cuts. On the other hand, the cutter and the foam board surface will generate a large friction force during the cutting process. With the help of the flexible characteristics of the PVC foam board, this friction force will make the foam board tend to move toward the cutter during the cutting process, resulting in the foam boards on both sides deriving a trend of moving closer to the cutter, commonly known as the "knife clamping" phenomenon, which will not only further aggravate the unevenness of the cut, but also reduce the cutting efficiency. In addition, since PVC foam board does not have the excellent conductivity of metal, the static charge generated by the high-speed cutting friction of the metal cutter cannot be dissipated quickly and will be concentrated at the incision, resulting in a large amount of "foam-like" lightweight cutting debris adsorbed on the cut surface. Even through traditional scraping methods and adsorption by fans, it is difficult to completely remove the cut surface debris. The "foam-like" lightweight cutting debris will adhere to the cut surface as firmly as a "dog-skin plaster".

[0003] In view of the above problems, it is urgent to carry out innovative design based on the original PVC foam board cutting equipment. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide an anti-static adsorption PVC foam board cutting device to solve the problem proposed in the above background technology that when cutting a soft PVC foam board with a certain thickness, when it is subjected to the hard cutting action of a high-speed rotating cutter, the high-speed friction between the side of the cutter and the cut surface will generate friction heat on the one hand, causing the cut surface material to melt and stick, inducing plastic deformation of the material and unevenness of the incision. On the other hand, during the cutting process, a large friction force will be generated between the cutter and the surface of the foam board. This friction force will cause the foam board to tend to move toward the direction of the cutter during the cutting process, resulting in the foam boards on both sides to derive a trend of moving closer to the direction of the cutter, commonly known as the "knife clamping" phenomenon, which will not only further aggravate the unevenness of the incision, but also reduce the cutting efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an anti-static adsorption PVC foam board cutting device, comprising a cutting table and a cutting machine fixed under the cutting table, and also comprising a scissor board symmetrically arranged on the upper surface of the cutting table to provide cutting tension on both sides of the PVC foam board and capable of adaptively expanding to pop out the cut PVC foam board, an electrostatic adsorption plate symmetrically arranged above the scissor board that utilizes contact to transfer static electricity to adsorb cutting debris and quickly closes after cutting to generate instantaneous airflow to accelerate the removal of debris, and a reset plate fixed on the upper surface of the cutting table to regulate the opening and closing angles of the two electrostatic adsorption plates, and a waste discharge component for receiving and extracting debris between the two electrostatic adsorption plates is installed above the electrostatic adsorption plate.

[0006] Preferably, a push plate is installed on the side of the cutting table, and a mounting plate is fixed to the upper end of the center column of the push plate, a telescopic support plate perpendicular to the side of the cutting table is symmetrically fixed to the lower end of the push plate, and a cavity groove that slides with the telescopic support plate is opened inside the cutting table, and the end of the telescopic support plate is slidably arranged inside the cavity groove.

[0007] Preferably, the electrostatic adsorption plates symmetrically arranged above the scissor plates are distributed in an inverted cone shape, and the ends of the two scissor plates are symmetrically rotatably mounted on the outer wall of the center column of the push plate, and a rectangular through groove is opened on the surface of the cutting table for the cutting machine knife to be exposed.

[0008] Preferably, an elastic telescopic seat is fixed on the upper surface of the scissor plate, and the elastic telescopic end of the elastic telescopic seat is rotatably connected to a pressure roller, and an expansion spring is arranged between the two scissor plates.

[0009] Preferably, a vertical plate is fixed on the inner side of the scissor plate, and two ends of the expansion spring are respectively fixed on the side walls of the two vertical plates.

[0010] Preferably, guide rails are symmetrically provided on the upper surface of the cutting table, and the guide rails consist of two parts: a bevel track and a rectangular track.

[0011] Preferably, two guide rods rotatably connected to the lower surface of the scissor plate are arranged inside the rectangular track, and the width of the rectangular track is slidably matched with the diameter of the guide rods.

[0012] Preferably, the waste discharge assembly includes a vacuum cover and a vacuum pump, and the upper end of the mounting plate is fixedly connected to the vacuum cover, and the vacuum pump is installed on the upper surface of the mounting plate, and the air inlet end of the vacuum pump is connected to the vacuum cover through a detachable filter element and an L-shaped tube.

[0013] Preferably, the upper end of the electrostatic adsorption plate is rotatably connected to the lower surface of the vacuum cover, and a torsion spring is installed between the rotating shaft on the upper end of the electrostatic adsorption plate and the receiving seat on the lower surface of the vacuum cover to support the rotation and reset of the electrostatic adsorption plate.

[0014] Preferably, the reset plate is composed of two parts: a straight plate parallel to the cutting table and a guide plate fixed to the end of the straight plate; Both sides of the guide plate are designed to be gradually widened arcs to assist the two electrostatic adsorption plates in expanding.

[0015] Compared with the prior art, the present invention has the following beneficial effects: During cutting, the two guide rods at the lower end of the scissor plates gradually enter the bevel track from the rectangular track of the guide rail. As the width of the bevel track gradually increases, the hard restriction effect on the two guide rods is eliminated. Therefore, the reset elastic force of the two scissor plates expanding during cutting will directly act on the PVC foam board being cut, so that the PVC foam board during the cutting process is always subjected to an oblique outward thrust, but the two scissor plates will still not expand. Only when the PVC foam board is cut, the resistance of the two scissor plates is eliminated and they will expand rapidly to achieve the effect of material discharge. During cutting, the two close scissor plates will always generate an oblique outward thrust on the PVC foam board. On the one hand, it is used to alleviate the situation in which the friction force during cutting causes the foam board to tend to move toward the cutting knife direction, thereby alleviating the "knife clamping" phenomenon. On the other hand, applying an oblique outward thrust on both sides of the incision direction can reduce the friction resistance between the material and the cutting knife and the adhesion phenomenon caused by friction heat during cutting, which can effectively improve the cutting efficiency.

[0016] At the same time, when the cutter cuts the PVC foam board, the static charge accumulated at the cut of the PVC foam board will be quickly transferred to the electrostatic adsorption plate that is in contact with the surface of the PVC foam board, so that the opposite surfaces of the two electrostatic adsorption plates generate electrostatic adsorption force, and then the "foam"-like waste scraps splashed when the PVC foam board is cut are stably adsorbed on the side wall between the two electrostatic adsorption plates, and as long as the cutting is in progress, the friction static charge will be continuously replenished on the electrostatic adsorption plate, achieving the effect of stably adsorbing the waste scraps; When the PVC foam board is cut, the two scissor plates restricted by the complete PVC foam board will quickly pop open under the reset action of the expansion spring, and the scissor plates will carry the cut half PVC foam board and quickly pop open to both sides to achieve the effect of automatic material discharge. At the same time, due to the sliding fit restriction between the bevel track and the two guide rods, the opening angle of the scissor plates is limited, and there is rolling friction between the pressure roller and the PVC foam board. Therefore, when the scissor plates are opened to the limit distance, the corresponding half PVC foam board will continue to expand outward for a certain distance under its own inertia, so that the two half PVC foam boards can quickly move away from each other. The two electrostatic adsorption plates are released from contact with the lower ends of the two electrostatic adsorption plates. Since the resistance of the PVC foam board to the electrostatic adsorption plate is released and the static electricity is no longer replenished after cutting is completed, the two electrostatic adsorption plates quickly rotate and reset to move closer together. During the rapid approach, a rapid upward airflow will be generated in the space between the two electrostatic adsorption plates, driving the "foam"-like waste chips in the space that are not attracted by static electricity to surge upward into the vacuum cover. The vacuum cover has suction caused by the operation of the vacuum pump, so the waste chips that surge upward will be smoothly sucked by the vacuum pump into the detachable filter element for collection, thereby achieving an enhanced waste discharge effect in coordination with the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the positioning stage of the PVC foam board in the present invention.

[0018] Figure 2 It is a three-dimensional schematic diagram of the PVC foam board cutting stage in the present invention.

[0019] Figure 3 It is a three-dimensional schematic diagram of the PVC foam board after being cut in the present invention.

[0020] Figure 4 For the present invention Figure 1 A three-dimensional schematic diagram from another perspective.

[0021] Figure 5 For the present invention Figure 2 A three-dimensional schematic diagram from another perspective.

[0022] Figure 6 For the present invention Figure 3 A three-dimensional schematic diagram from another perspective.

[0023] Figure 7 It is a schematic diagram of the connection structure between the telescopic support plate and the cutting table of the present invention.

[0024] Figure 8 It is a schematic diagram of the installation structure of the reset plate and the cutting table in the present invention.

[0025] Fig. 9 It is a schematic diagram of the position relationship between the guide rod and the guide rail in the present invention.

[0026] In the figure: 1. cutting table; 11. guide rail; 12. cutting machine; 2. push plate; 21. telescopic support plate; 3. scissor plate; 31. elastic telescopic seat; 32. pressure roller; 33. expansion spring; 4. guide rod; 5. mounting plate; 6. exhaust top cover; 7. exhaust fan; 8. electrostatic adsorption plate; 9. reset plate. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figures 1 to 9 The present invention provides a technical solution: an anti-static adsorption PVC foam board cutting device, comprising a cutting table 1 and a cutting machine 12 fixed under the cutting table 1, and also comprising scissor plates 3 symmetrically arranged on the upper surface of the cutting table 1 to provide cutting tension on both sides of the PVC foam board and can adaptively expand to pop out the cut PVC foam board, electrostatic adsorption plates 8 symmetrically arranged above the two scissor plates 3 to utilize contact transfer static electricity to adsorb cutting debris and quickly close after cutting to generate instantaneous airflow to accelerate the extraction of debris, and a reset plate 9 fixed on the upper surface of the cutting table 1 to adjust the opening and closing angles of the two electrostatic adsorption plates 8, and a waste discharge component for receiving and extracting debris between the two electrostatic adsorption plates 8 is installed above the two electrostatic adsorption plates 8.

[0029] In a specific implementation, in the initial stage, the reset plate 9 will spread the two electrostatic adsorption plates 8 that are close to each other, so that the lower end of the electrostatic adsorption plate 8 is away from the surface of the scissor plate 3 to facilitate the placement of the PVC foam board.

[0030] Initial stage: the two electrostatic adsorption plates 8 are in an inverted cone posture with the largest opening due to the opening effect of the reset plate 9. In this stage, the lower ends of the two electrostatic adsorption plates 8 do not contact the upper surface of the PVC foam board.

[0031] In a specific implementation, the inner adsorption surface of the electrostatic adsorption plate 8 is attached with a foam of conductive cloth, which has good conductive properties and can effectively transfer static electricity by contacting the PVC foam board; The electrostatic adsorption plate 8 can also be made of polyethylene closed-cell foam board by adding highly conductive carbon black, linear low-density polyethylene and other ingredients to the raw materials to form a stable conductive path, thereby effectively transferring and eliminating static electricity. This technology is existing technology and will not be disclosed in detail here.

[0032] Cutting stage: as the scissor plate 3 brings the PVC foam board closer to and contacts the cutter, the resetting plate 9 releases the propping effect on the electrostatic adsorption plate 8, and the two electrostatic adsorption plates 8 rotate and move closer to each other at a certain angle until the lower ends contact the upper surface of the PVC foam board. At this time, the static charge generated during cutting will be transferred to the electrostatic adsorption plate 8, and the electrostatic adsorption plate 8 will generate a certain electrostatic adsorption force so that the debris that would originally be adsorbed at the incision will be adsorbed on the inner side of the electrostatic adsorption plate 8; When cutting is in progress, the expansion spring 33 exerts a stable outward expansion effect on the two scissor plates 3 to prevent the PVC foam boards on both sides from moving toward the cutter under the influence of friction, thereby reducing the resistance between the incision and the cutter and improving the smoothness of cutting.

[0033] In a specific implementation, the electrostatic adsorption plate 8 is made of a fast conductive material. Once the electrostatic supply is lost, it will quickly lose the electrostatic storage and thus lose the adsorption ability, so that when the two electrostatic adsorption plates 8 are quickly brought together, the "bulging" airflow is used to guide the debris upward.

[0034] When the PVC foam board is cut off: the two scissor boards 3 quickly pop open under the action of the expansion spring 33, and the two cut PVC foam boards quickly separate to both sides under the action of their own inertia and release the contact with the lower ends of the two electrostatic adsorption plates 8. At this time, there is no continuous transfer of static charge on the electrostatic adsorption plate 8, and the static electricity will dissipate quickly. At the same time, due to the rapid withdrawal of the PVC foam board, the two electrostatic adsorption plates 8 are also instantly contacted by the pressing effect of the PVC foam board. Therefore, the two electrostatic adsorption plates 8 will quickly move together at the same time as the static electricity dissipates, triggering an upward instantaneous airflow between the two electrostatic adsorption plates 8, thereby quickly pushing up the debris between the two electrostatic adsorption plates 8 and discharging the adsorbed "foam"-like debris under the suction force of the vacuum pump 7.

[0035] As a further embodiment of the present invention, a push plate 2 is installed on the side of the cutting table 1, and a mounting plate 5 is fixed to the upper end of the central column of the push plate 2, and a telescopic support plate 21 perpendicular to the side of the cutting table 1 is symmetrically fixed to the lower end of the push plate 2, and a cavity groove that slides and matches with the two telescopic support plates 21 is opened inside the cutting table 1, and the ends of the two telescopic support plates 21 are respectively slidably set inside the two cavities.

[0036] In a specific implementation, the mounting plate 5 will move synchronously with the cutting process. Since there is a position conflict between the mounting plate 5 and the fixed reset plate 9, a frame that can pass through the reset plate 9 without being affected is provided in the horizontal corresponding area of ​​the mounting plate 5 and the reset plate 9.

[0037] The telescopic support plate 21 symmetrically arranged on the side of the push plate 2 can freely telescope and move in the cavity opened inside the cutting table 1 according to the cutting progress. At the same time, because the two electrostatic adsorption plates 8 will be blocked by the extension plate at the end of the reset plate 9 when returning to the initial position, there is an indirect limiting effect on the telescopic support plate 21 and the push plate 2, and the telescopic support plate 21 will not be pulled out of the cavity.

[0038] As a further embodiment of the present invention, the electrostatic adsorption plates 8 symmetrically arranged above the two scissor plates 3 are distributed in an inverted cone shape, and the ends of the two scissor plates 3 are symmetrically rotatably installed on the outer wall of the central column of the push plate 2, and a rectangular through groove is opened on the surface of the cutting table 1 for the cutting knife of the cutting machine 12 to be exposed.

[0039] The two electrostatic adsorption plates 8 distributed in an inverted cone shape can pass through both sides of the cutting area well and have a good correspondence with the cutting surface, which is helpful for the adsorption of cutting debris.

[0040] As a further embodiment of the present invention, an elastic telescopic seat 31 is fixed to the upper surface of the scissor plate 3 , and the elastic telescopic end of the elastic telescopic seat 31 is rotatably connected to a pressure roller 32 , and an expansion spring 33 is provided between the two scissor plates 3 .

[0041] In a specific implementation, the elastic cooperation between the elastic telescopic seat 31 and the pressing roller 32 is a prior art and will not be disclosed in detail here.

[0042] When the PVC foam board is disconnected, the PVC foam boards on both sides will be given an initial speed to expand to both sides by the rapidly expanding scissor board 3. Due to the rolling friction between the pressure roller 32 and the PVC foam board, the PVC foam boards on both sides will be ejected a certain distance under the action of their own inertia to meet the separation from the lower end of the electrostatic adsorption plate 8. As a further embodiment of the present invention, a vertical plate is fixed on the inner side of the scissor plate 3, and two ends of the expansion spring 33 are respectively fixed on the side walls of the two vertical plates.

[0043] The function of the expansion spring 33 is to provide a restoring effect for the two scissor plates 3 to expand, but due to the cooperation restriction between the guide rod 4 and the guide rail 11, the expansion action of the two scissor plates 3 only occurs when the PVC foam board is cut.

[0044] As a further embodiment of the present invention, guide rails 11 are symmetrically provided on the upper surface of the cutting table 1, and the guide rails 11 are composed of two parts: a bevel track and a rectangular track.

[0045] Two guide rods 4 rotatably connected to the lower surface of the scissor plate 3 are arranged inside the rectangular track, and the width of the rectangular track is slidably matched with the diameter of the guide rods 4 .

[0046] In a specific implementation, when the guide rods 4 on both sides are synchronously located inside the rectangular track, the guide rods 4 can only move horizontally due to the restriction of the rectangular track, so the two scissor plates 3 can only remain in a close state.

[0047] When the guide rods 4 on both sides enter the bevel track, since the width of the guide rail 11 gradually increases, the restoring elastic force of the two scissor plates 3 expanding during cutting will directly act on the cut PVC foam board, so that the PVC foam board during the cutting process is always subjected to an oblique outward thrust, but the two scissor plates 3 still will not expand. Only when the PVC foam board is cut, the resistance of the two scissor plates 3 is eliminated and they will expand rapidly to achieve the effect of material discharge. During the cutting process, the two scissor plates 3 approaching each other will always generate an oblique outward thrust on the PVC foam board, which is used to alleviate the friction during cutting so that the foam board tends to In the case of moving closer to the cutter, on the other hand, applying an oblique outward thrust on both sides along the incision direction can reduce the friction resistance between the material and the cutter and the adhesion caused by friction heat during the cutting process, which can effectively improve the cutting efficiency. (Similar to cutting paper along the crease with both hands, if you want to cut it smoothly, it is best to apply oblique outward pressure on both sides of the paper along the crease direction to assist in cutting. The oblique thrust applied symmetrically on both sides will generate a component force on the common cutting axis, and the component force on the common axis overlaps on the cutting line, which helps to cut smoothly and can reduce the friction resistance of the material to cutting to improve cutting efficiency).

[0048] As a further embodiment of the present invention, the waste discharge assembly includes an exhaust cover 6 and an exhaust fan 7, and the upper end of the mounting plate 5 is fixedly connected to the exhaust cover 6, and the exhaust fan 7 is installed on the upper surface of the mounting plate 5, and the air inlet end of the exhaust fan 7 is connected to the exhaust cover 6 through a detachable filter element and an L-shaped tube.

[0049] In the specific implementation, the detachable filter element and the L-shaped tube are prior arts and will not be disclosed in detail here.

[0050] The air inlet end of the vacuum pump 7 is connected to the L-shaped tube via a detachable filter element. The detachable filter element is used to filter out the inhaled "foam"-like lightweight debris to prevent the debris from invading the vacuum pump 7. The interior of the vacuum cover 6 is evacuated to form a through connection with the L-shaped tube. The suction force generated by the vacuum pump 7 can be transmitted by the vacuum cover 6 to the electrostatic adsorption area between the two electrostatic adsorption plates 8.

[0051] As a further embodiment of the present invention, the upper end of the electrostatic adsorption plate 8 is rotatably connected to the lower surface of the vacuum cover 6, and a torsion spring is installed between the rotating shaft at the upper end of the electrostatic adsorption plate 8 and the receiving seat on the lower surface of the vacuum cover 6 to support the rotation and reset of the electrostatic adsorption plate 8.

[0052] As a further embodiment of the present invention, the reset plate 9 is composed of a straight plate parallel to the cutting table 1 and a guide plate fixed to the end of the straight plate; Both sides of the guide plate are designed to be gradually widened arcs to assist the two electrostatic adsorption plates 8 in expanding.

[0053] The straight plate of the reset plate 9 is used to provide supporting force without affecting the movement and approach of the two electrostatic adsorption plates 8. When the two electrostatic adsorption plates 8 return to the initial position, they will be resisted by the curved side edges of the guide plate, thereby rotating in an expanding manner to move away from the scissor plate 3 to facilitate the placement of the PVC foam board, thereby achieving an effect of automatically adjusting the expansion angle of the two electrostatic adsorption plates 8.

[0054] Working principle: The main working process of the present invention is divided into three stages: PVC foam board positioning, PVC foam board cutting and PVC foam board cutting, as follows: PVC foam board positioning stage: Figure 1 and Figure 4 The figure shows a reference schematic diagram of the PVC foam board positioning stage. First, the PVC foam board to be cut passes through the elastically liftable pressure roller 32 and is placed on the upper surface of the two scissor plates 3, so that the cutting center line of the PVC foam board corresponds to the cutter. At the same time, the PVC foam board remains stable under the squeezing action of the pressure rollers 32 on both sides. At this time, the two upper electrostatic adsorption plates 8 are at the maximum expansion angle and the lower end of the electrostatic adsorption plate 8 does not contact the PVC foam board, and as shown in FIG. Fig. 9 As shown, at this time, the two guide rods 4 at the lower end of the scissor plate 3 are synchronously located in the rectangular track of the guide rail 11.

[0055] PVC foam board cutting stage: Figure 2 and Figure 5The figure shows a reference schematic diagram of the PVC foam board cutting stage. The scissor plate 3, the PVC foam board, the mounting plate 5 and the two electrostatic adsorption plates 8 are pushed synchronously along the surface of the cutting table 1 toward the cutting knife by the push plate 2. The only thing that does not move is the reset plate 9. When the two electrostatic adsorption plates 8 move forward, since the two electrostatic adsorption plates 8 gradually move away from the guide plate of the reset plate 9, the torsion spring inside the upper end rotation shaft of the two electrostatic adsorption plates 8 will gradually play a reset role to make the two electrostatic adsorption plates 8 perform reset rotation and move closer to each other until the lower ends of the two electrostatic adsorption plates 8 abut against the upper surface of the PVC foam board. At this time, the two electrostatic adsorption plates 8 cannot continue to move closer to reset and thus remain stable again (supplementary explanation: the torsion spring restoring force inside the upper end rotation shaft of the electrostatic adsorption plate 8 is much smaller than the restoring force of the expansion spring 33. Therefore, the lower end of the electrostatic adsorption plate 8 abutting against the PVC foam board will not affect the subsequent expansion spring 33 to reset and open to drive the two cut PVC foam boards to separate); As the cutting progresses, Fig. 9 The two guide rods 4 at the lower end of the scissor plates 3 shown in the figure gradually enter the bevel track from the rectangular track of the guide rail 11. As the width of the bevel track gradually increases, the hard restriction effect on the two guide rods 4 is eliminated. Therefore, the restoring elastic force of the two scissor plates 3 when cutting will directly act on the PVC foam board being cut. However, since the PVC foam board has not been cut yet, the two scissor plates 3 will not expand during the cutting process. Only when the PVC foam board is cut, the resistance of the two scissor plates 3 is eliminated and they will expand rapidly to achieve the effect of material discharge. During the cutting process, the two close scissor plates 3 always have an oblique outward thrust tendency on the PVC foam board. On the one hand, it is used to alleviate the situation that the friction force during cutting causes the foam board to tend to move toward the cutting knife. On the other hand, applying an oblique outward thrust on both sides of the incision direction can reduce the friction resistance between the material and the cutting knife and the adhesion phenomenon caused by friction heat during the cutting process, which can effectively improve the cutting efficiency. At the same time, when the cutter cuts the PVC foam board, the static charge accumulated at the cut of the PVC foam board will be quickly transferred to the electrostatic adsorption plate 8 that is in contact with the surface of the PVC foam board, so that the opposite surfaces of the two electrostatic adsorption plates 8 generate an electrostatic adsorption force, and then the "foam"-like waste chips splashed when the PVC foam board is cut are stably adsorbed on the side wall between the two electrostatic adsorption plates 8, and as long as the cutting is in progress, the friction static charge will be continuously replenished on the electrostatic adsorption plate 8, so as to achieve the effect of stably adsorbing the waste chips.

[0056] 3. PVC foam board cutting stage: Figure 3 and Figure 6The figure shows a reference schematic diagram of the PVC foam board cutting stage. When the PVC foam board is cut, the two scissor boards 3 restricted by the complete PVC foam board will quickly pop open under the reset action of the expansion spring 33 (the width of the bevel track is large enough to support the two guide rods 4 to expand with the scissor boards 3), and the scissor boards 3 will carry the cut half of the PVC foam board and quickly pop open to both sides. Due to the sliding fit restriction between the bevel track and the two guide rods 4, the pop-up angle of the scissor boards 3 is limited, and since there is rolling friction between the pressure roller 32 and the PVC foam board, when the scissor boards 3 pop open to the limit distance, the corresponding half of the PVC foam board will continue to expand outward for a certain distance under the action of its own inertia. As a result, the two halves of the PVC foam board quickly move away from the two electrostatic adsorption plates 8 and release the contact with the lower ends of the two electrostatic adsorption plates 8. Since the resistance of the PVC foam board to the electrostatic adsorption plates 8 is released and the static electricity is no longer replenished after the cutting is completed, the two electrostatic adsorption plates 8 quickly rotate and reset to move closer together. During the period of rapid approach, a rapid upward airflow will be generated in the space between the two electrostatic adsorption plates 8, driving the "foam"-shaped waste chips in the space that are not attracted by static electricity to surge upward into the exhaust cover 6. The exhaust cover 6 has suction brought by the operation of the vacuum pump 7, so the waste chips that surge upward will be smoothly sucked by the vacuum pump 7 into the detachable filter element for collection, thereby achieving the enhanced waste discharge effect of the cooperation with the vacuum pump 7. The above is a complete cutting process. After cutting, the push plate 2 can be pulled to reset, and the guide rod 4 will gradually reset from the bevel track of the guide rail 11 to the rectangular track, and the two electrostatic adsorption plates 8 will also gradually reset under the resistance of the reset plate 9 and be stretched open again to restore the initial state.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-static adsorption PVC foam board cutting device, comprising a cutting table (1) and a cutting machine (12) fixed below the cutting table (1), characterized in that: It also includes scissor plates (3) symmetrically arranged on the upper surface of the cutting table (1) to provide cutting tension on both sides of the PVC foam board and can adaptively expand to eject the cut PVC foam board, electrostatic adsorption plates (8) symmetrically arranged above the two scissor plates (3) to use contact to transfer static electricity to adsorb cutting debris and quickly close after cutting to generate instantaneous airflow to accelerate the removal of debris, and a reset plate (9) fixed on the upper surface of the cutting table (1) to adjust the opening and closing angles of the two electrostatic adsorption plates (8), and a waste discharge component for receiving and extracting debris between the two electrostatic adsorption plates (8) is installed above the two electrostatic adsorption plates (8).

2. The anti-static adsorption PVC foam board cutting device according to claim 1 is characterized by: A push plate (2) is installed on the side of the cutting table (1), and a mounting plate (5) is fixed to the upper end of the central column of the push plate (2), and a telescopic support plate (21) perpendicular to the side of the cutting table (1) is symmetrically fixed to the lower end of the push plate (2), and a cavity groove that slidably matches the two telescopic support plates (21) is opened inside the cutting table (1), and the ends of the two telescopic support plates (21) are respectively slidably arranged inside the two cavities.

3. The anti-static adsorption PVC foam board cutting device according to claim 2 is characterized by: The electrostatic adsorption plates (8) symmetrically arranged above the two scissor plates (3) are distributed in an inverted cone shape, and the ends of the two scissor plates (3) are symmetrically rotatably mounted on the outer wall of the central column of the push plate (2), and a rectangular through slot is provided through the surface of the cutting table (1) for exposing the cutting blade of the cutting machine (12).

4. The anti-static adsorption PVC foam board cutting device according to claim 1, characterized in that: An elastic telescopic seat (31) is fixed on the upper surface of the scissor plate (3), and an elastic telescopic end of the elastic telescopic seat (31) is rotatably connected to a pressure roller (32), and an expansion spring (33) is provided between the two scissor plates (3).

5. The anti-static adsorption PVC foam board cutting device according to claim 4 is characterized in that: A vertical plate is fixed on the inner side of the scissor plate (3), and two ends of the expansion spring (33) are respectively fixed on the side walls of the two vertical plates.

6. The anti-static adsorption PVC foam board cutting device according to claim 1, characterized in that: The upper surface of the cutting table (1) is symmetrically provided with guide rails (11), and the guide rails (11) are composed of two parts: a bevel track and a rectangular track.

7. The anti-static adsorption PVC foam board cutting device according to claim 6, characterized in that: Two guide rods (4) are arranged inside the rectangular track and are rotatably connected to the lower surface of the scissor plate (3), and the width of the rectangular track is slidably matched with the diameter of the guide rods (4).

8. The anti-static adsorption PVC foam board cutting device according to claim 2, characterized in that: The waste discharge assembly comprises an exhaust cover (6) and an exhaust fan (7), wherein the upper end of the mounting plate (5) is fixedly connected to the exhaust cover (6), and the exhaust fan (7) is mounted on the upper surface of the mounting plate (5), and the air inlet end of the exhaust fan (7) is connected to the exhaust cover (6) via a detachable filter element and an L-shaped tube.

9. The anti-static adsorption PVC foam board cutting device according to claim 8, characterized in that: The upper end of the electrostatic adsorption plate (8) is rotatably connected to the lower surface of the exhaust cover (6), and a torsion spring for supporting the electrostatic adsorption plate (8) to rotate and reset is installed between the rotating shaft at the upper end of the electrostatic adsorption plate (8) and the receiving seat on the lower surface of the exhaust cover (6).

10. The anti-static adsorption PVC foam board cutting device according to claim 8, characterized in that: The reset plate (9) is composed of two parts: a straight plate parallel to the cutting table (1) and a guide plate fixed to the end of the straight plate; Both sides of the guide plate are designed to be gradually widened arcs to assist the two electrostatic adsorption plates (8) in expanding.

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