A sheet metal processing device and its processing technology

Abstract

This invention relates to the field of sheet metal processing technology, specifically disclosing a sheet metal processing device and its processing technology. The device includes two steel strips rotatably mounted on a frame. A scraping assembly is mounted on the frame, comprising a force-applying plate rotatably mounted on the frame and a receiving box rotatably mounted on the frame and linked to the force-applying plate via a linkage mechanism. To avoid waste and contamination caused by mold release agent dripping, the clever design of the force-applying plate driving the rotation of the receiving box allows the mold release agent collected in the cavity of the receiving box to be cleverly transferred to both sides of the top surface of the plywood during the plywood feeding process. Even if the amount of mold release agent on the outer surface of the steel strip is insufficient, it is less likely for the extended portions on both sides of the plywood to adhere to the surface of the steel strip when they come into contact with it. This significantly reduces the probability of the extended portions of the plywood adhering to the steel strip surface with glue on them.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, specifically to a sheet metal processing device and its processing technology. Background Technology

[0002] Plywood is a type of board made by gluing together multiple layers of wood veneers. During processing, glued veneers are typically arranged in a crisscross pattern along the grain to form a board blank, which is then pressed under heated or unheated conditions. In current technology, plywood is usually pressed using a steel strip press.

[0003] When plywood is compressed, its material causes it to stretch on both sides. The stretched parts become weaker due to structural damage and are easily adhered to the left and right sides of the steel strip by the glue, thus contaminating the steel strip. To prevent contamination of the steel strip, existing technologies often involve applying or spraying a release agent onto the steel strip. Since the middle part of the steel strip does not come into contact with the stretched parts on both sides of the plywood, to save on the amount of release agent used, it is sufficient to spray only the left and right sides of the steel strip surface.

[0004] For example, the existing patent with application number 202311230877.5, entitled "An Automatic Spraying Machine for Release Agent on the Edge of Steel Strip," is equipped with a nozzle for spraying release agent onto the steel strip. The nozzle is connected to a box containing the release agent via a spray pipe. It also includes a cleaning component for cleaning the surface of the steel strip and a collection plate for collecting excess release agent to avoid waste caused by excessive spraying. Another example is the invention patent with application number 201911331476.2, entitled "A Hot Press Machine for Steel Strip in Hot Pressing Processing of Artificial Boards," which discloses a release agent spraying device for spraying release agent onto the steel strip on the active rotating roller; a coating roller located at the lower end of the active rotating roller for evenly coating the release agent onto the steel strip; and a release agent collection tray located below the release agent spraying device for collecting excess release agent.

[0005] However, during the actual processing, the applicant discovered that the aforementioned existing patents and other existing technologies all have at least the following defects:

[0006] Because the steel strip has a smooth surface, after spraying the release agent, it drips down the steel strip before it presses the plywood, resulting in insufficient release agent adhering to the steel strip. The dripping release agent also contaminates the workbench. To avoid waste and contamination from dripping release agent, existing technology involves scraping off excess release agent from the steel strip using a scraper or other scraping mechanism after spraying. This further reduces the amount of release agent on both sides of the steel strip surface, meaning that when the steel strip presses the plywood, the extended portions of the plywood on both sides, still carrying glue, are likely to adhere to the steel strip surface. Therefore, how to reduce the probability of glue adhering to the extended portions of the plywood on both sides of the steel strip surface while avoiding waste and contamination from dripping release agent is a pressing technical problem. Summary of the Invention

[0007] The purpose of this invention is to provide a sheet metal processing apparatus and its processing technology to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a sheet metal processing device, comprising two steel strips rotatably mounted on a frame, wherein a scraping assembly is provided on the frame, the scraping assembly comprising a force-applying plate rotatably mounted on the frame and a receiving box rotatably mounted on the frame and linked to the force-applying plate via a linkage mechanism;

[0009] The container is fixedly equipped with a scraper that communicates with its inner cavity and abuts against the outer surface of the corresponding steel strip for scraping off excess release agent from the steel strip. The scraped release agent flows along the scraper into the inner cavity of the container for storage.

[0010] The receiving box is rotatably mounted with two absorbent rings that are pressed and fitted one-to-one with the two sides of the top surface of the plywood. The receiving box has two clearance openings that correspond one-to-one with the two absorbent rings. The absorbent rings pass through the corresponding clearance openings and abut against the inner wall of the clearance openings. The release agent in the cavity of the receiving box is immersed in the absorbent rings.

[0011] Before the plywood is squeezed, the end of the plywood pushes the force plate to rotate elastically. The force plate then drives the receiving box to rotate toward the plywood, causing the two absorber rings to squeeze the plywood so that the absorber rings rotate and apply the release agent inside to both sides of the top surface of the plywood.

[0012] The aforementioned sheet metal processing device includes a linkage mechanism comprising a first rotating shaft and a second rotating shaft rotatably mounted on a frame. A main gear is coaxially mounted on the first rotating shaft, and a driven gear meshing with the main gear is coaxially mounted on the second rotating shaft. The first rotating shaft drives the main gear to rotate synchronously, and the second rotating shaft drives the driven gear to rotate synchronously. The force-applying plate is fixedly connected to the first rotating shaft, and the receiving box is fixedly connected to the second rotating shaft.

[0013] The aforementioned sheet metal processing device includes a scraper comprising an integrally formed base plate and two side plates, wherein the end of the base plate is an abutment surface that abuts against the outer side of the corresponding steel strip.

[0014] In the above-mentioned sheet metal processing device, a swing plate is fixedly installed on the first rotating shaft, and an arc-shaped compression spring is installed between the swing plate and the frame. A third rotating shaft is rotatably installed at one end of the swing plate. A brush that presses against the outer surface of the corresponding steel strip is fixedly installed on the third rotating shaft. When the force plate separates from the plywood, the force plate is driven to reset based on the elastic force of the arc-shaped compression spring, and at the same time, the brush is pressed against the outer surface of the steel strip.

[0015] In the aforementioned sheet metal processing device, a plurality of pins intersecting with the brush are fixedly installed inside the swing plate. A locking gear is coaxially arranged on the third rotating shaft. The third rotating shaft drives the locking gear to rotate synchronously. A toothed plate that meshes with the locking gear is fixedly installed on the frame. When the brush is pressed against the outer surface of the steel strip, the toothed plate meshes with the locking gear to lock the brush. When the plywood pushes the force plate to rotate, it drives the toothed plate to rotate the locking gear so that the brush and the pins move relative to each other.

[0016] In the aforementioned sheet metal processing device, an arc-shaped receiving groove is fixedly installed on the swing plate. The arc-shaped receiving groove is located directly below the brush. When the brush and the pin move relative to each other, the impurities cleaned from the brush fall into the arc-shaped receiving groove.

[0017] In the aforementioned sheet metal processing device, during the process of the plywood pushing the force plate to rotate, the locking gear is driven to separate from the toothed plate. Based on inertia, the locking gear, the third rotating shaft, and the brush continue to rotate after separation, so that the stopping position of the brush is random. Thus, when the brush is pressed against the outer surface of the steel strip again, the contact position between the brush and the outer surface of the steel strip is different.

[0018] In the aforementioned sheet metal processing device, a mounting base is fixedly installed on the swing plate, and a nozzle is installed on the mounting base. The flexible hose connected to the nozzle passes around the side of the swing plate.

[0019] In the aforementioned board processing device, when the plywood pushes the force plate to rotate, it causes the swing plate to rotate upward so that the swing plate then drives the nozzle of the spray head to rotate upward, thereby preventing the release agent remaining in the spray head from dripping from the nozzle.

[0020] A sheet metal processing technology includes the following steps:

[0021] S1: Spraying release agent: The release agent is sprayed onto the outer surface of the rotating steel belt through the spraying mechanism. At this time, the scraper abuts against the outer surface of the steel belt, so that the excess release agent is scraped off by the scraper. The scraped release agent flows along the scraper into the receiving box for collection and gradually soaks into the two absorption rings.

[0022] S2: Applying release agent to plywood: Apply a force toward the steel strips to the plywood to be compressed. Before the plywood enters between the two steel strips, the end of the plywood pushes the force plate to rotate elastically. The force plate then drives the receiving box to rotate toward the plywood, causing the two absorber rings to squeeze the plywood so that the absorber rings rotate and apply the release agent inside to both sides of the top surface of the plywood. After that, the plywood enters between the two steel strips and is compressed.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention, through the structural design of the scraping component, enables interaction between the force-applying plate and the plywood, and links the receiving box with the force-applying plate. This allows the scraper, fixedly mounted on the receiving box, to collect excess release agent when spraying it onto the steel strip before the plywood is compressed, thus preventing waste and contamination from dripping release agent. Furthermore, the clever use of the force-applying plate to rotate the receiving box allows the release agent collected in the receiving box's cavity to be transferred to both sides of the plywood's top surface during the plywood's advancement. This ensures that excess release agent is immediately reused and applied to both sides of the plywood's top surface. Because both sides of the plywood's top surface are covered with release agent, even if the amount of release agent on the outer surface of the steel strip is insufficient, the extended portions on both sides of the plywood are less likely to adhere to the steel strip surface when in contact with it. This significantly reduces the probability of the extended portions of the plywood adhering to the steel strip surface with glue. Therefore, this invention effectively solves the shortcomings of existing technologies.

[0025] 2. This invention, by fixing a swing plate on a first rotating shaft, fixing a toothed plate on a frame, and rotating a third rotating shaft on the swing plate, with a brush mounted on the third rotating shaft and a locking gear meshing with the toothed plate, achieves unexpected technical effects. This is because, during the rotation of the plywood pushing the force plate, not only is the release agent stored in the container applied to the plywood, but the brush also automatically cleans impurities adhering to it. Furthermore, the toothed plate not only locks the brush when cleaning the steel strip surface, but also provides rotational power to the brush when cleaning is not required, enabling automatic cleaning. It also utilizes inertia to ensure the brush contacts the steel strip at different positions each time, improving its lifespan and preventing increased wear due to repeated contact. This significantly increases the utilization rate of the toothed plate. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a front view of the sheet metal processing apparatus provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure between the scraping component and the corresponding steel strip in the initial state provided by an embodiment of the present invention;

[0029] Figure 3 Provided for embodiments of the present invention Figure 2 A magnified structural diagram of part A in the diagram;

[0030] Figure 4 A three-dimensional structural schematic diagram of the scraping component provided in an embodiment of the present invention;

[0031] Figure 5 Provided for embodiments of the present invention Figure 4 A schematic diagram of the enlarged structure of part B in the diagram;

[0032] Figure 6 This is a three-dimensional cross-sectional view of the scraping component provided in an embodiment of the present invention;

[0033] Figure 7 Provided for embodiments of the present invention Figure 6 A schematic diagram of the front view structure in the diagram;

[0034] Figure 8 This is a schematic diagram of the structure of the absorbent ring provided in an embodiment of the present invention when the release agent is applied to the top surface of the plywood.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Scraping assembly; 2. Force plate; 3. First rotating shaft; 4. Main gear; 5. Driven gear; 6. Second rotating shaft; 7. Receiving box; 701. Inlet; 8. Scraper; 801. Abutment surface; 9. Absorption ring; 901. Fourth rotating shaft; 10. Swing plate; 1001. Arc-shaped receiving groove; 11. Third rotating shaft; 12. Brush; 13. Toothed plate; 14. Locking gear; 15. Pin; 16. Mounting base; 17. Nozzle; 18. Frame; 19. Drive roller; 20. Steel belt; 21. Pressure roller; 22. Feeding support roller; 23. Discharging support roller; 24. Secondary extrusion roller; 25. Plywood; 26. Arc-shaped compression spring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] First embodiment:

[0039] Please see Figures 1-8 The present invention provides a sheet metal processing device, including two steel strips 20 rotatably mounted on a frame 18, a scraping assembly 1 mounted on the frame 18, the scraping assembly 1 including a force plate 2 elastically rotatably mounted on the frame 18 and a receiving box 7 that is linked to the force plate 2 through a linkage mechanism and rotatably mounted on the frame 18.

[0040] A scraper 8 is fixedly installed on the container 7, which communicates with its inner cavity and abuts against the outer surface of the corresponding steel strip 20 to scrape off excess release agent on the steel strip 20. The scraped release agent flows along the scraper 8 into the inner cavity of the container 7 for storage.

[0041] The receiving box 7 is rotatably mounted with two absorbent rings 9 that are pressed and fitted one-to-one with the two sides of the top surface of the plywood 25. The receiving box 7 has two clearance openings that correspond one-to-one with the two absorbent rings 9. The absorbent rings 9 pass through the corresponding clearance openings and abut against the inner wall of the clearance openings. The release agent in the cavity of the receiving box 7 is immersed in the absorbent rings 9.

[0042] Before the plywood 25 is squeezed, the end of the plywood 25 pushes the force plate 2 to rotate elastically. The force plate 2 then drives the receiving box 7 to rotate toward the plywood 25, causing the two absorption rings 9 to squeeze the plywood 25 so that the absorption rings 9 rotate and apply the release agent inside to both sides of the top surface of the plywood 25.

[0043] The sheet metal processing device provided in this embodiment can prevent steel strip contamination and prevent mold release agent dripping and contamination of the working environment. In this embodiment, terms related to direction and position are relative to the accompanying drawings. "Both sides" in this embodiment refers to both sides along the width direction of the steel strip 20. Specifically, two sets of drive rollers 19 are rotatably mounted on the frame 18. Two steel strips 20 are correspondingly fitted onto the two sets of drive rollers 19. The plywood 25 passes between the two steel strips 20 to achieve the first extrusion. Each set of drive rollers 19 contains two drive rollers 19, which are connected by a drive belt or chain. One drive roller 19 is connected to a drive motor to drive the rotation of one set of drive rollers 19. The rotation of the drive roller 19 drives the corresponding steel strip 20 to rotate. The arrangement of the drive rollers 19 and the steel strip 20 are existing technologies and will not be described further in this embodiment. Two sets of pressure rollers 21 are also rotatably mounted on the frame 18. The two sets of pressure rollers 21 abut against the inner sides of the two steel strips 20 in a corresponding manner. The two sets of pressure rollers 21 are used to support the two steel strips 20 in a corresponding manner to improve the stability of the extruded plywood 25. The number of pressure rollers 21 in each set of pressure rollers 21 is not limited and can be determined according to the distance between the two drive rollers 19 in each set of drive rollers 19. The frame 18 is also rotatably equipped with a plurality of horizontally arranged feeding support rollers 22 and a plurality of horizontally arranged unloading support rollers 23. The feeding support rollers 22 and unloading support rollers 23 have the same height, and the top height of the feeding support rollers 22 and unloading support rollers 23 is the same as the top surface height of the steel strip 20 below. When the plywood 25 is first extruded, the plywood 25 is placed on the feeding support rollers 22, and then pushed between the two steel strips 20 so that the plywood 25 enters between the two steel strips 20 for extrusion. After extrusion, the plywood 25 passes through the two steel strips 20 and falls onto the unloading support rollers 23.

[0044] This embodiment also includes a spraying mechanism (not shown in the figure) installed on the frame 18. Only the nozzle 17 is shown in the figure. The spraying mechanism is used to spray the release agent onto the outer surface of the steel strip 20 or more specifically onto both sides of the outer surface of the steel strip 20. The release agent is a liquid release agent. The spraying mechanism includes a box for holding the release agent, a hose connected to the box, a nozzle 17 connected to the end of the hose, and a pump for conveying the release agent. The hose is made of plastic or rubber and is deformable. One end of the hose is connected to the box and the other end is connected to the nozzle 17. The spraying mechanism is prior art, and the specific detailed structure and connection method will not be described in detail.

[0045] The focus of this embodiment is the structural design of the scraping component 1. The scraping component 1 includes a force-applying plate 2 that is elastically rotatably mounted on the frame 18 and a receiving box 7 that is linked to the force-applying plate 2 and rotatably mounted on the frame 18 via a linkage mechanism. When the force-applying plate 2 rotates, the force-applying plate 2 drives the receiving box 7 to rotate via the linkage mechanism. The receiving box 7 is located between the force-applying plate 2 and the steel strip 20. The rotation direction of the force-applying plate 2 is opposite to the rotation direction of the receiving box 7. At the same time, the force-applying plate 2 abuts against the plywood 25, so that the end of the plywood 25 can abut against the force-applying plate 2 before being squeezed. Under the pushing force of the plywood 25, the force-applying plate 2 is driven to rotate toward the steel strip 20. The force-applying plate 2 then drives the receiving box 7 to rotate away from the steel strip 20 and closer to the top of the plywood 25. When the bottom of the force-applying plate 2 is located at the top of the plywood 25, the rotation angle of the force-applying plate 2 reaches its maximum. The receiving box 7 has an inlet 701 that communicates with its inner cavity. The scraper 8 passes through the inlet 701 so that one end of the scraper 8 is located in the inner cavity of the receiving box 7 and the other end abuts against the outer surface of the steel strip 20. The initial state is when the plywood 25 is not in contact with the force plate 2. At this time, under the elastic rotational force of the force plate 2, the end of the scraper 8 is driven to abut against the outer surface of the steel strip 20, so that the scraper 8 plays a role in limiting the force plate 2. The scraper 8 is also used to scrape off excess release agent on the steel strip 20. After the spraying mechanism sprays the release agent on the outer surface of the steel strip 20, as the steel strip 20 rotates, the scraper 8 scrapes off the excess release agent on the steel strip 20. The scraped release agent flows into the inner cavity of the receiving box 7 along the scraper 8 for storage, so that the receiving box 7 plays a role in storing the release agent. A fourth rotating shaft 901 is rotatably installed in the inner cavity of the container 7. Two absorbent rings 9 are fixedly sleeved on the fourth rotating shaft 901. The absorbent rings 9 are made of pure cotton, linen, PVC, or fiber material, as long as they have strong water absorption and elasticity. The absorbent rings 9 are used to absorb the release agent entering the inner cavity of the container 7 and cleverly apply the absorbed release agent to the plywood 25. The container 7 has two clearance openings that correspond one-to-one with the two absorbent rings 9. The absorbent rings 9 pass through the corresponding clearance openings and abut against the inner wall of the clearance openings so that the release agent in the inner cavity of the container 7 can contact the absorbent rings 9 while the absorbent rings 9 seal the clearance openings to prevent the release agent in the inner cavity of the container 7 from leaking out.When the force plate 2 rotates to its maximum angle, as the plywood 25 continues to advance, the top surface of the plywood 25 presses against the two absorption rings 9, causing the two absorption rings 9 to deform. This allows the release agent impregnated in the two absorption rings 9 to be applied to both sides of the top surface of the plywood 25. Under the pressure, the friction between the top surface of the plywood 25 and the absorption rings 9 is greater than the sum of the friction between the absorption rings 9 and the clearance opening and the rotational friction between the fourth rotating shaft 901 and the receiving box 7. As the plywood 25 continues to advance, it drives the two absorption rings 9 to rotate. The rotation of the absorption rings 9 causes them to continuously absorb the release agent in the cavity of the receiving box 7 and continuously press and apply it to both sides of the top surface of the plywood 25. This allows the excess release agent scraped off by the scraper 8 to be used immediately. Afterward, the plywood 25 enters between the two steel strips 20 and is pressed. Since the plywood 25 is stretched on both sides when it is compressed, applying a release agent to both sides of the plywood 25 beforehand can effectively reduce the probability of the plywood 25 being stretched on both sides and the glue adhering to the steel strip 20 due to insufficient release agent on the steel strip 20.

[0046] Therefore, this invention, through the structural design of the scraping component 1, enables interaction between the force-applying plate 2 and the plywood 25, and links the receiving box 7 with the force-applying plate 2. This allows the scraper 8, fixedly mounted on the receiving box 7, to collect excess release agent into the receiving box 7 when the release agent is sprayed onto the steel strip 20 before the plywood 25 is compressed, thus preventing waste and contamination from dripping release agent. Furthermore, the ingenious design of the force-applying plate 2 driving the rotation of the receiving box 7 ensures that the release agent collected in the cavity of the receiving box 7 can be effectively removed during the pushing of the plywood 25. The absorption ring 9 is cleverly transferred to both sides of the top surface of the plywood 25, so that the excess release agent can be reused immediately. Moreover, it is applied to both sides of the top surface of the plywood 25. Since both sides of the top surface of the plywood 25 are covered with release agent, even if the amount of release agent on the outer surface of the steel strip 20 is insufficient, it is less likely to adhere to the surface of the steel strip 20 when the extended parts on both sides of the plywood 25 come into contact with the surface of the steel strip 20. This greatly reduces the probability that the extended parts on both sides of the plywood 25 will adhere to the surface of the steel strip 20 with glue. It can be seen that the present invention can effectively solve the shortcomings of the prior art.

[0047] The release agent in the cavity of the container 7 can be injected in advance through the inlet 701 to avoid insufficient release agent applied to the surface of the plywood 25.

[0048] In this embodiment, the linkage mechanism includes a first rotating shaft 3 and a second rotating shaft 6 rotatably mounted on the frame 18. A main gear 4 is coaxially mounted on the first rotating shaft 3, and the main gear 4 is keyed or fixedly connected to the first rotating shaft 3. A driven gear 5, meshing with the main gear 4, is coaxially mounted on the second rotating shaft 6, and the second rotating shaft 6 is keyed or fixedly connected to the driven gear 5. The first rotating shaft 3 drives the main gear 4 to rotate synchronously, and the second rotating shaft 6 drives the driven gear 5 to rotate synchronously. The force-applying plate 2 is fixedly connected to the first rotating shaft 3, and the receiving box 7 is fixedly connected to the second rotating shaft 6. Specifically, both the main gear 4 and the driven gear 5 rotate on their own axes. When an external force is applied to the force-applying plate 2, the force-applying plate 2 drives the main gear 4 to rotate through the first rotating shaft 3. The main gear 4 then drives the driven gear 5 to rotate through meshing, and the driven gear 5 then drives the receiving box 7 to rotate. Based on the meshing of the main gear 4 and the driven gear 5, the rotation directions of the force-applying plate 2 and the receiving box 7 are opposite.

[0049] The scraper 8 includes an integrally formed base plate and two side plates. The end of the base plate is an abutment surface 801 that abuts against the outer surface of the corresponding steel strip 20. The abutment surface 801 extends further towards the steel strip 20 relative to the two side plates of the scraper 8 so that when the abutment surface 801 abuts against the outer surface of the steel strip 20, the side plates of the scraper 8 do not abut against the steel strip 20. The two side plates of the scraper 8 are used to block the release agent and prevent it from flowing out from both sides of the scraper 8. In the initial state, the abutment surface 801 abuts against the outer surface of the steel strip 20. At this time, the base plate of the scraper 8 is inclined downward from the steel strip 20 towards the receiving box 7 so that the release agent scraped off by the scraper 8 can flow along the base plate of the scraper 8 into the inner cavity of the receiving box 7.

[0050] Furthermore, a swing plate 10 is fixedly installed on the first rotating shaft 3, and an arc-shaped compression spring 26 is installed between the swing plate 10 and the frame 18. The elastic force of the arc-shaped compression spring 26 enables the elastic rotation of the force application plate 2. A third rotating shaft 11 is rotatably installed on one end of the swing plate 10. A brush 12 that is pressed against the outer surface of the corresponding steel strip 20 is fixedly installed on the third rotating shaft 11. When the force application plate 2 separates from the plywood 25, the elastic force of the arc-shaped compression spring 26 drives the force application plate 2 to return to its original position, while the brush 12 is pressed against the outer surface of the steel strip 20. Specifically, the number of brushes 12 is either two or one. When there are two brushes 12, they correspond one-to-one with the two sides of the outer surface of the steel strip 20. When there is one brush 12, the axial length of the brush 12 is increased so that one brush 12 can cover the entire width of the steel strip 20. Since the outer surface of the steel strip 20 is easily covered with solid-liquid mixtures of impurities after it has been squeezed over the plywood 25, after one squeeze of the plywood 25 is completed, the positions on the outer surface of the steel strip 20 that were originally in contact with the extended parts on both sides of the plywood 25 gradually come into contact with and are squeezed by the brushes 12. During the rotation of the steel strip 20, relative movement occurs between it and the brushes 12, so that the brushes 12 clean the impurities adhering to the outer surface of the steel strip 20, so that the surface of the steel strip 20 is cleaner when it squeezes the plywood 25 next time.

[0051] The swing plate 10 has a cavity inside, which extends through the end face of the swing plate 10 near the brush 12. Several pins 15 that intersect with the brush 12 are fixedly installed inside the swing plate 10. A locking gear 14 is coaxially arranged on the third rotating shaft 11. The third rotating shaft 11 and the locking gear 14 are keyed or fixedly connected. The third rotating shaft 11 drives the locking gear 14 to rotate synchronously. A toothed plate 13 that meshes with the locking gear 14 is fixedly installed on the frame 18. When the brush 12 is pressed against the outer surface of the steel belt 20, the toothed plate 13 meshes with the locking gear 14 to lock the brush 12. When the plywood 25 pushes the force plate 2 to rotate, it drives the toothed plate 13 to drive the locking gear 14 to rotate so that the brush 12 and the pins 15 move relative to each other. Specifically, based on the meshing of the toothed plate 13 and the locking gear 14, when the brush 12 abuts against the outer surface of the steel belt 20, the toothed plate 13 and the locking gear 14 mesh so that the locking gear 14 cannot rotate, and thus the brush 12 cannot rotate, so that the toothed plate 13 locks the brush 12. When the steel belt 20 rotates, relative movement is generated between the steel belt 20 and the brush 12, so that the brush 12 cleans the outer surface of the steel belt 20. Simultaneously, based on the meshing of the toothed plate 13 and the locking gear 14, when the force plate 2 is pushed and rotated by the plywood 25, the force plate 2 drives the swing plate 10 to rotate synchronously around the first rotating shaft 3. The swing plate 10 compresses and deforms the arc-shaped compression spring 26. The swing plate 10 drives the locking gear 14 to rotate around the first rotating shaft 3 while rotating around the third rotating shaft 11. The rotation of the third rotating shaft 11 drives the brush 12 to rotate, thereby generating relative movement between the brush 12 and the pin 15, causing the brush 12 to collide with the pin 15, thus causing the impurities adhering to the brush 12 to fall off, achieving the cleaning effect of the brush 12. When the force plate 2 and the plywood 25 are misaligned, the elastic force of the arc-shaped compression spring 26 is released, causing the force plate 2, the swing plate 10, and the receiving box 7 to return to their initial state. At this time, the contact surface 801 abuts against the outer surface of the steel strip 20, and the brush 12 also abuts against the outer surface of the steel strip 20.

[0052] An arc-shaped receiving groove 1001 is fixedly installed on the swing plate 10. The arc-shaped receiving groove 1001 is located directly below the brush 12. When the brush 12 and the pin 15 move relative to each other, the impurities cleaned from the brush 12 fall into the arc-shaped receiving groove 1001 and are collected. The cavity of the swing plate 10 is connected to the arc-shaped receiving groove 1001. When the swing plate 10 is driven to rotate upward by the force plate 2, the impurities in the arc-shaped receiving groove 1001 are gradually transferred to the inner cavity of the swing plate 10. An openable cleaning port (not shown in the figure) is installed on the swing plate 10, and the inner cavity of the swing plate 10 can be cleaned by opening the cleaning port.

[0053] In this embodiment, during the process of the plywood 25 pushing the force plate 2 to rotate, the locking gear 14 is driven to separate from the toothed plate 13. Based on inertia, the locking gear 14, the third rotating shaft 11, and the brush 12 continue to rotate after separation, so that the stopping position of the brush 12 is random. Thus, when the brush 12 is pressed against the outer surface of the steel belt 20 again, the contact position between the brush 12 and the outer surface of the steel belt 20 is different. This can avoid the brush 12 contacting the steel belt 20 in the same position every time, which would increase wear and thus increase the service life of the brush 12.

[0054] Therefore, this invention, by fixing a swing plate 10 on the first rotating shaft 3, fixing a toothed plate 13 on the frame 18, and rotatably mounting a third rotating shaft 11 on the swing plate 10, with a brush 12 mounted on the third rotating shaft 11 and a locking gear 14 meshing with the toothed plate 13 on the third rotating shaft 11, enables the plywood 25 to push the force plate 2 to rotate, thus not only applying the release agent stored in the container 7 to the plywood 25, but also automatically cleaning the impurities adhering to the brush 12. The toothed plate 13 not only locks the brush 12 when it cleans the surface of the steel strip 20, but also provides the brush 12 with the power to rotate when it does not need to clean the surface of the steel strip 20, so that the brush 12 can automatically clean itself. It can also use inertia to make the brush 12 contact the steel strip 20 at different positions each time, thereby improving the service life of the brush 12 and avoiding the brush 12 contacting the steel strip 20 at the same position every time, which would increase wear. This greatly increases the utilization rate of the toothed plate 13.

[0055] In this embodiment, a mounting base 16 is fixedly installed on the swing plate 10, and a nozzle 17 is installed on the mounting base 16. A hose (not shown in the figure) connected to the nozzle 17 passes around the side of the swing plate 10, and the hose is used for the flow of the release agent. There are at least two nozzles 17, and the two nozzles 17 spray the release agent onto both sides of the outer surface of the steel strip 20 in a one-to-one correspondence.

[0056] When the plywood 25 pushes the force plate 2 to rotate, it causes the swing plate 10 to rotate upward so that the swing plate 10 drives the nozzle of the spray head 17 to rotate upward, so that the release agent remaining in the spray head 17 will not drip from the nozzle of the spray head 17.

[0057] In this embodiment, the nozzle 17 is located between the brush 12 and the scraper 8, with the scraper 8 at the bottom. When the plywood 25 is being squeezed, the release agent is first sprayed onto the outer surface of the steel strip 20 through the nozzle 17, and then the plywood 25 is pushed to move. The nozzle 17 stops spraying the release agent before the plywood 25 comes into contact with the force plate 2. Then the plywood 25 comes into contact with the force plate 2 and pushes the force plate 2 to rotate elastically. The force plate 2 drives the swing plate 10 to rotate upward, and the swing plate 10 drives the nozzle 17 to rotate upward through the mounting base 16, so that the release agent remaining in the nozzle 17 will not drip from the nozzle of the nozzle 17.

[0058] For reference, see the appendix. Figure 1 As shown, there are two sets of scraping components 1, each corresponding to one of the two steel strips 20. Multiple secondary extrusion rollers 24 are rotatably arranged in an array on the frame 18. The secondary extrusion rollers 24 are located below the lower steel strip 20, and the distance between the top of the secondary extrusion roller 24 and the bottom of the lower steel strip 20 is equal to the distance between the two steel strips 20, allowing the plywood 25 to undergo secondary extrusion between the steel strip 20 and the secondary extrusion rollers 24. The first and second extrusion operations of the plywood 25 are the same and will not be described further. There are two spraying mechanisms, each corresponding to one of the two steel strips 20. The two spraying mechanisms spray release agent onto the outer surface of the two steel strips 20, and the two scraping components 1 scrape off excess release agent from the two steel strips 20. The first and second extrusions of the plywood 25 can be performed simultaneously to improve work efficiency.

[0059] In this embodiment, the number of main gears 4 and driven gears 5 are both two, and they mesh one-to-one. The number of toothed plates 13 and locking gears 14 are also both two, and they mesh one-to-one, thereby improving the force balance. The toothed plates 13 located on the rear side are directly fixedly connected to the frame 18. This embodiment also includes a fixedly installed support plate (not shown in the figure). The toothed plates 13 located on the front side are fixedly connected to the support plate. The first rotating shaft 3, the second rotating shaft 6, the transmission roller 19, the pressure roller 21, the feeding support roller 22, the unloading support roller 23, and the end of the secondary extrusion roller 24 away from the frame 18 are all rotatably connected to the support plate.

[0060] The bottom surface of the inner cavity of the container 7 is inclined downward toward the two absorption rings 9 so that the release agent in the inner cavity of the container 7 flows toward the two absorption rings 9.

[0061] Second embodiment:

[0062] The structure involved in this embodiment is based on the structure in the first embodiment. This embodiment provides a sheet metal processing technology, which includes the following steps:

[0063] S1: Spraying release agent: The release agent is sprayed onto the outer surface of the rotating steel belt 20 through the spraying mechanism. At this time, the scraper 8 abuts against the outer surface of the steel belt 20, so that the excess release agent is scraped off by the scraper 8. The scraped release agent flows along the scraper 8 into the receiving box 7 for collection and gradually soaks into the two absorption rings 9.

[0064] S2: Applying release agent to plywood: Applying a force toward the steel strip 20 to the plywood 25 that needs to be compressed. Before the plywood 25 enters between the two steel strips 20, the end of the plywood 25 pushes the force plate 2 to rotate elastically. The force plate 2 then drives the receiving box 7 to rotate toward the plywood 25, causing the two absorption rings 9 to squeeze the plywood 25 so that the absorption rings 9 rotate and apply the release agent inside to both sides of the top surface of the plywood 25. After that, the plywood 25 enters between the two steel strips 20 and is compressed.

[0065] S3: Secondary extrusion: After the steel strip is extruded between the two steel strips 20, it is subjected to secondary extrusion. Before the secondary extrusion, another spraying mechanism sprays a release agent onto the outer surface of the lower steel strip 20. After that, the action between the other set of scraping components and the lower steel strip 20 is the same as in steps S1 and S2, and will not be described again.

[0066] In step S1, a swing plate 10 is fixedly installed on the first rotating shaft 3. An arc-shaped compression spring 26 is installed between the swing plate 10 and the frame 18. The elastic force of the arc-shaped compression spring 26 enables the elastic rotation of the force application plate 2. A third rotating shaft 11 is rotatably installed on one end of the swing plate 10. A brush 12 that is pressed against the outer surface of the corresponding steel strip 20 is fixedly installed on the third rotating shaft 11. When the force application plate 2 separates from the plywood 25, the elastic force of the arc-shaped compression spring 26 drives the force application plate 2 to reset, and at the same time, the brush 12 is pressed against the outer surface of the steel strip 20. Specifically, the number of brushes 12 is either two or one. When there are two brushes 12, they correspond one-to-one with the two sides of the outer surface of the steel strip 20. When there is one brush 12, the axial length of the brush 12 is increased so that one brush 12 can cover the entire width of the steel strip 20. Since the outer surface of the steel strip 20 is easily covered with solid-liquid mixtures of impurities after it has been squeezed over the plywood 25, after one squeeze of the plywood 25 is completed, the positions on the outer surface of the steel strip 20 that were originally in contact with the extended parts on both sides of the plywood 25 gradually come into contact with and are squeezed by the brushes 12. During the rotation of the steel strip 20, relative movement occurs between it and the brushes 12, so that the brushes 12 clean the impurities adhering to the outer surface of the steel strip 20, so that the surface of the steel strip 20 is cleaner when it squeezes the plywood 25 next time.

[0067] In step S2, a cavity is formed inside the swing plate 10, which penetrates the end face of the swing plate 10 near the brush 12. Several pins 15 that intersect with the brush 12 are fixedly installed inside the swing plate 10. A locking gear 14 is coaxially arranged on the third rotating shaft 11. The third rotating shaft 11 and the locking gear 14 are keyed or fixedly connected. The third rotating shaft 11 drives the locking gear 14 to rotate synchronously. A toothed plate 13 that meshes with the locking gear 14 is fixedly installed on the frame 18. When the brush 12 is pressed against the outer surface of the steel belt 20, the toothed plate 13 meshes with the locking gear 14 to lock the brush 12. When the plywood 25 pushes the force plate 2 to rotate, it drives the toothed plate 13 to drive the locking gear 14 to rotate so that the brush 12 and the pins 15 move relative to each other. Specifically, based on the meshing of the toothed plate 13 and the locking gear 14, when the brush 12 abuts against the outer surface of the steel belt 20, the toothed plate 13 and the locking gear 14 mesh so that the locking gear 14 cannot rotate, and thus the brush 12 cannot rotate, so that the toothed plate 13 locks the brush 12. When the steel belt 20 rotates, relative movement is generated between the steel belt 20 and the brush 12, so that the brush 12 cleans the outer surface of the steel belt 20. Simultaneously, based on the meshing of the toothed plate 13 and the locking gear 14, when the force plate 2 is pushed and rotated by the plywood 25, the force plate 2 drives the swing plate 10 to rotate synchronously around the first rotating shaft 3. The swing plate 10 compresses and deforms the arc-shaped compression spring 26. The swing plate 10 drives the locking gear 14 to rotate around the first rotating shaft 3 while rotating around the third rotating shaft 11. The rotation of the third rotating shaft 11 drives the brush 12 to rotate, thereby generating relative movement between the brush 12 and the pin 15, causing the brush 12 to collide with the pin 15, thus causing the impurities adhering to the brush 12 to fall off, achieving the cleaning effect of the brush 12. When the force plate 2 and the plywood 25 are misaligned, the elastic force of the arc-shaped compression spring 26 is released, causing the force plate 2, the swing plate 10, and the receiving box 7 to return to their initial state. At this time, the contact surface 801 abuts against the outer surface of the steel strip 20, and the brush 12 also abuts against the outer surface of the steel strip 20.

[0068] An arc-shaped receiving groove 1001 is fixedly installed on the swing plate 10. The arc-shaped receiving groove 1001 is located directly below the brush 12. When the brush 12 and the pin 15 move relative to each other, the impurities cleaned from the brush 12 fall into the arc-shaped receiving groove 1001 and are collected. The cavity of the swing plate 10 is connected to the arc-shaped receiving groove 1001. When the swing plate 10 is driven to rotate upward by the force plate 2, the impurities in the arc-shaped receiving groove 1001 are gradually transferred to the inner cavity of the swing plate 10. An openable cleaning port (not shown in the figure) is installed on the swing plate 10, and the inner cavity of the swing plate 10 can be cleaned by opening the cleaning port.

[0069] In this embodiment, during the process of the plywood 25 pushing the force plate 2 to rotate, the locking gear 14 is driven to separate from the toothed plate 13. Based on inertia, the locking gear 14, the third rotating shaft 11, and the brush 12 continue to rotate after separation, so that the stopping position of the brush 12 is random. Thus, when the brush 12 is pressed against the outer surface of the steel belt 20 again, the contact position between the brush 12 and the outer surface of the steel belt 20 is different. This can avoid the brush 12 contacting the steel belt 20 in the same position every time, which would increase wear and thus increase the service life of the brush 12.

[0070] It should be noted that all electrical equipment involved in this application can be powered by batteries or external power sources.

[0071] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sheet metal processing apparatus, comprising two steel strips (20) rotatably mounted on a frame (18), wherein a scraping assembly (1) is provided on the frame (18), characterized in that: The scraping assembly (1) includes a force-applying plate (2) that is rotatably mounted on a frame (18) and a receiving box (7) that is rotatably mounted on the frame (18) and is linked to the force-applying plate (2) through a linkage mechanism. The container (7) is fixedly installed with a scraper (8) that communicates with its inner cavity and abuts against the outer surface of the corresponding steel strip (20) for scraping off excess release agent on the steel strip (20). The scraped release agent flows along the scraper (8) into the inner cavity of the container (7) for storage. The receiving box (7) is rotatably mounted with two absorbent rings (9) that are pressed and fitted one-to-one with the two sides of the top surface of the plywood (25). The receiving box (7) has two clearance openings that correspond one-to-one with the two absorbent rings (9). The absorbent rings (9) pass through the corresponding clearance openings and abut against the inner wall of the clearance openings. The release agent in the cavity of the receiving box (7) is immersed in the absorbent rings (9). Before the plywood (25) is squeezed, the end of the plywood (25) pushes the force plate (2) to rotate elastically. The force plate (2) then drives the receiving box (7) to rotate toward the plywood (25), causing the two absorber rings (9) to squeeze the plywood (25) so that the absorber rings (9) rotate to apply the release agent inside to both sides of the top surface of the plywood (25). The linkage mechanism includes a first rotating shaft (3) and a second rotating shaft (6) rotatably mounted on the frame (18). A swing plate (10) is fixedly installed on the first rotating shaft (3). An arc-shaped compression spring (26) is installed between the swing plate (10) and the frame (18). A third rotating shaft (11) is rotatably installed on one end of the swing plate (10). A brush (12) that is pressed against the outer surface of the corresponding steel strip (20) is fixedly installed on the third rotating shaft (11). When the force plate (2) separates from the plywood (25), the force plate (2) is reset based on the elastic force of the arc-shaped compression spring (26), and at the same time, the brush (12) is pressed against the outer surface of the steel strip (20). The swing plate (10) is fixedly installed with several pins (15) that intersect with the brush (12). A locking gear (14) is coaxially arranged on the third rotating shaft (11). The third rotating shaft (11) drives the locking gear (14) to rotate synchronously. A toothed plate (13) that meshes with the locking gear (14) is fixedly installed on the frame (18). When the brush (12) is pressed against the outer surface of the steel belt (20), the toothed plate (13) meshes with the locking gear (14) to lock the brush (12). When the plywood (25) pushes the force plate (2) to rotate, it drives the toothed plate (13) to drive the locking gear (14) to rotate so that the brush (12) and the pins (15) move relative to each other.

2. The sheet metal processing apparatus according to claim 1, characterized in that: A main gear (4) is coaxially arranged on the first rotating shaft (3), and a driven gear (5) meshing with the main gear (4) is coaxially arranged on the second rotating shaft (6). The first rotating shaft (3) drives the main gear (4) to rotate synchronously, and the second rotating shaft (6) drives the driven gear (5) to rotate synchronously. The force plate (2) is fixedly connected to the first rotating shaft (3), and the receiving box (7) is fixedly connected to the second rotating shaft (6).

3. The sheet metal processing apparatus according to claim 1, characterized in that: The scraper (8) includes an integrally formed bottom plate and two side plates. The end of the bottom plate is an abutment surface (801) that abuts against the outer side of the corresponding steel strip (20).

4. The sheet metal processing apparatus according to claim 1, characterized in that: An arc-shaped receiving groove (1001) is fixedly installed on the swing plate (10). The arc-shaped receiving groove (1001) is located directly below the brush (12). When the brush (12) and the pin (15) move relative to each other, the impurities cleaned from the brush (12) fall into the arc-shaped receiving groove (1001).

5. The sheet metal processing apparatus according to claim 1, characterized in that: During the process of the plywood (25) pushing the force plate (2) to rotate, the locking gear (14) is driven to separate from the tooth plate (13). Based on inertia, the locking gear (14), the third rotating shaft (11) and the brush (12) continue to rotate after separation so that the stopping position of the brush (12) is random. Thus, when the brush (12) is pressed against the outer surface of the steel belt (20) again, the contact position between the brush (12) and the outer surface of the steel belt (20) is different.

6. The sheet metal processing apparatus according to claim 1, characterized in that: A mounting base (16) is fixedly installed on the swing plate (10), and a nozzle (17) is installed on the mounting base (16). The hose connected to the nozzle (17) passes around the side of the swing plate (10).

7. The sheet metal processing apparatus according to claim 6, characterized in that: When the plywood (25) pushes the force plate (2) to rotate, it causes the swing plate (10) to rotate upward so that the swing plate (10) then drives the nozzle (17) to rotate upward, so that the release agent remaining in the nozzle (17) will not drip from the nozzle (17).

8. A sheet metal processing technology, based on the sheet metal processing apparatus according to any one of claims 1-7, characterized in that, Includes the following steps: S1: Spraying release agent: The release agent is sprayed onto the outer surface of the rotating steel belt (20) by the spraying mechanism. At this time, the scraper (8) abuts against the outer surface of the steel belt (20), so that the excess release agent is scraped off by the scraper (8). The scraped release agent flows along the scraper (8) into the receiving box (7) for collection and gradually soaks into the two absorption rings (9). S2: Applying release agent to plywood: Apply a force toward the steel strip (20) to the plywood (25) that needs to be squeezed. Before the plywood (25) enters between the two steel strips (20), the end of the plywood (25) pushes the force plate (2) to rotate elastically. The force plate (2) then drives the receiving box (7) to rotate toward the plywood (25), causing the two absorption rings (9) to squeeze the plywood (25) so that the absorption rings (9) rotate to apply the release agent inside to both sides of the top surface of the plywood (25). After that, the plywood (25) enters between the two steel strips (20) and is squeezed.

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