Plate linear sanding machine

Abstract

The utility model relates to the field of plate processing equipment, in particular to a plate linear sanding machine which comprises a rack, a conveying belt, a dust cover and two groups of sanding mechanisms. The sanding mechanism is composed of a sanding roller, a tensioning roller and an abrasive belt, the contact area of the abrasive belt and the plate is increased through a plurality of pressing wheels in the material pressing assembly, and the more uniform grinding effect is achieved. The material pressing assembly adopts a positioning frame, a rotating shaft and a connecting rod structure, a pressing spring is matched to ensure that a pressing wheel always presses the abrasive belt, and damage of plate protrusions to the abrasive belt is reduced through a buffer spring. In addition, the brush is additionally arranged to clean abrasive belt dust, and secondary pollution is avoided. The sanding device achieves the effects of improving the sanding efficiency and quality and prolonging the service life of the sanding belt.

Description

Technical Field

[0001] This application relates to the field of equipment for processing wood-based panels for furniture, and in particular to a straight-line sanding machine for wood-based panels. Background Technology

[0002] Sanding machines, as an important surface treatment equipment, are widely used in the processing of various materials such as wood, metal, and plastics. With the increasing demands of modern industry for the surface quality of boards, sanding machines play an irreplaceable role in improving the smoothness and appearance of board surfaces.

[0003] In practical applications, to achieve effective sanding of boards, the industry typically employs single-point or multi-point contact methods for surface treatment. For example, traditional sanders complete the sanding operation through contact between a fixed sanding belt and the board, or use a simple pressure roller structure to press the sanding belt tightly against the board surface. Furthermore, some equipment uses multiple sanding belts in parallel to improve processing efficiency. However, these methods have significant limitations when processing large-area boards, generally relying on fixed sanding belt tension and limited contact patterns.

[0004] Existing conventional methods are insufficient for sanding complex board shapes and large areas. The main problem lies in the limited contact area between the sanding belt and the board, leading to uneven sanding, especially when dealing with non-planar or complex-shaped boards. Furthermore, the sanding belt's inability to automatically adjust contact pressure according to the board shape further exacerbates the low sanding efficiency and inconsistent surface quality. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a straight-line sander for plates.

[0006] A linear sanding machine for sheet metal includes a frame, a conveyor belt mounted on the frame, a dust cover mounted on the frame, and two sanding mechanisms mounted on the dust cover. Each sanding mechanism includes two sanding rollers, the axial direction of which is perpendicular to the conveyor belt's transmission direction. A tension roller is mounted above the sanding rollers on the dust cover. Sanding belts are fitted onto the sanding rollers and the tension roller. A pressing assembly is positioned between the two sanding rollers. The pressing assembly includes multiple pressure rollers, which are used to push the sanding belt into contact with the sheet metal.

[0007] By adopting the above technical solution, when the user uses the sanding belt, it is transported outside the sanding roller. The contact point between the sanding belt and the board is a line contact below the sanding roller. By adding multiple pressure rollers, the sanding belt below the pressure rollers can also come into contact with the board, thereby increasing the contact area between the sanding belt and the board, making the sanding of the board more uniform and the sanding effect better.

[0008] Preferably, the pressing assembly includes a positioning frame, with both ends of the positioning frame fixed to a dust cover, positioning plates provided on both sides of the bottom of the positioning frame, a rotating shaft rotatably connected to the middle of the positioning plate, and multiple connecting rods connected to the rotating shaft, with a pressure roller connected to both ends of the connecting rods.

[0009] By adopting the above technical solution, when the user uses the equipment, the pressure roller abuts against the sanding belt, pushing the sanding belt to grind the board. When the pressure roller is lifted up by the sanding belt, the pressure roller on the other side abuts against the sanding belt more tightly, so that each pressure roller can apply pressure to the sanding belt, increasing the grinding area between the sanding belt and the board.

[0010] Preferably, the top of the connecting rod is provided with multiple compression springs, one end of which is located on the connecting rod and the other end is located at the bottom of the positioning frame.

[0011] By adopting the above technical solution, when the user uses the equipment, the tension of the clamping spring ensures that the pressure roller is always in contact with the sanding belt, so that the sanding belt is always in contact with the plate. Secondly, when there are large protrusions on the plate, the clamping spring plays a buffering role on the pressure roller and the sanding belt, reducing damage to the sanding belt.

[0012] Preferably, the pressure roller is detachably connected to the positioning frame.

[0013] By adopting the above technical solution, when the pressure roller is worn or damaged, the user can remove the positioning roller from the positioning frame and replace it with a new pressure roller.

[0014] Preferably, the positioning frame has a through hole, and a support plate is provided below the positioning frame. The positioning plate and the compression spring are both fixedly connected to the bottom of the support plate. A guide post is provided on the support plate, and a nut is threadedly connected to the guide post after it extends out of the positioning frame.

[0015] By adopting the above technical solution, when using the device, the user can remove the nut on the guide column to remove the entire support plate from the positioning frame, which facilitates the disassembly and replacement of the pressure roller connected to the support plate.

[0016] Preferably, a buffer spring is fitted onto the guide post.

[0017] By adopting the above technical solution, when the user uses the sanding belt, if there are large protrusions or impurities on the board, the impurities and protrusions will generate resistance to the sanding belt. The resistance will lift the sanding belt, and the buffer spring will play a role in buffering and restoring the sanding belt, reducing damage to the sanding belt and extending its service life.

[0018] Preferably, the tensioning roller is fixedly connected to sliding columns at both ends, the sliding columns are slidably connected inside the dust cover, and the sliding columns are fitted with return springs.

[0019] By adopting the above technical solution, when the user uses the tensioning roller, the return spring plays a role in buffering and resetting the tensioning roller, allowing the tensioning roller to have a certain amount of room for movement, which makes it easy to adjust the pressure of the sanding belt.

[0020] Preferably, a brush is provided inside the dust cover, and the brush abuts against the outside of the sanding belt.

[0021] By adopting the above technical solution, when the user uses the sanding belt to polish the board, a large amount of dust will stick to the sanding belt. The brush can sweep off the dust on the sanding belt, reducing the amount of dust brought into the board by the sanding belt and preventing secondary pollution of the board by dust. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0023] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0024] Figure 3 This is a structural schematic diagram of the sanding machine and the pressing assembly of this application;

[0025] Figure 4 This is an exploded view of the material pressing assembly.

[0026] Reference numerals: 1. Frame; 11. Conveyor belt; 12. Dust cover; 13. Brush; 2. Sanding mechanism; 21. Sanding roller; 22. Tensioning roller; 221. Sliding column; 222. Return spring; 23. Sanding belt; 3. Pressing assembly; 31. Positioning frame; 311. Through hole; 32. Support plate; 321. Guide column; 322. Buffer spring; 33. Positioning plate; 331. Rotating shaft; 34. Connecting rod; 341. Roller; 342. Pressure spring. Detailed Implementation

[0027] The following will be combined with the appendix Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. The described embodiments are only possible technical implementations of this utility model and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of this utility model without creative effort, and these embodiments are also within the protection scope of this utility model.

[0028] The inventors of this application discovered that existing sanders, when processing large-area boards, often suffer from uneven sanding due to the limited contact area between the sanding belt and the board, especially when processing non-planar or complex-shaped boards. Therefore, this application primarily employs the following solution: by increasing the contact area between the sanding belt and the board, it significantly improves the uniformity and efficiency of sanding. Example

[0029] This application provides a linear sanding machine for sheet metal, including... Figure 1 and Figure 2 The system includes a frame 1, a conveyor belt 11, a dust cover 12, and two sanding mechanisms 2. The conveyor belt 11 is used to transport the sheet metal to be processed; the dust cover 12 is fixed to the frame 1 to prevent the spread of dust generated during the sanding process. Two sanding mechanisms 2 are installed inside the dust cover 12, shown in the figure as two, but not limited to two.

[0030] Reference Figure 3 and Figure 4 Each sanding mechanism 2 includes two sanding rollers 21, with their axial directions perpendicular to the conveyor belt 11. A tension roller 22 is positioned above the sanding rollers 21, and a sanding belt 23 is fitted between the sanding rollers 21 and the tension roller 22. A pressure assembly 3 is positioned between the two sanding rollers 21, and the pressure assembly 3 includes multiple pressure rollers. These pressure rollers are used to push the sanding belt 23 into contact with the board, thereby increasing the contact area between the sanding belt 23 and the board and improving the uniformity of sanding.

[0031] Specifically, the sanding roller 21 in the sanding mechanism 2 is driven to rotate by a motor. The motor can be an AC motor or a DC servo motor, and the specific choice can be determined according to actual needs. The outer surface of the sanding roller 21 is made of wear-resistant material, such as hard alloy or ceramic coating, to extend its service life.

[0032] The tension roller 22 is used to adjust the tension of the sanding belt 23. Sliding columns 221 are fixedly connected to both ends of the roller, and these columns are slidably connected inside the dust cover 12. A return spring 222 is fitted over the sliding column 221. One end of the return spring 222 is fixed to the sliding column 221, and the other end is fixed to the inner wall of the dust cover 12. The return spring 222 allows the tension roller 22 to have a certain amount of room to move, facilitating automatic tension adjustment based on the wear condition of the sanding belt 23 and ensuring that the sanding belt 23 is always in optimal working condition.

[0033] The pressing assembly 3 includes a positioning frame 31 with a through hole 311. A support plate 32 is located below the positioning frame 31, and a guide post 321 is mounted on the support plate 32. The guide post 321 extends out of the positioning frame 31 and is threaded with a nut. By removing the nut from the guide post 321, the support plate 32 can be completely removed from the positioning frame 31, facilitating the disassembly and replacement of the pressure roller connected to the support plate 32. A buffer spring 322 is also fitted onto the guide post 321. When there are large protrusions or impurities on the material, these impurities and protrusions create resistance to the sanding belt 23, causing it to lift. The buffer spring 322 cushions and resets the sanding belt 23, reducing damage and extending its service life. The buffer spring 322 can be made of stainless steel or high-strength alloy steel to ensure sufficient elasticity and durability.

[0034] Two positioning plates 33 are fixedly connected to the bottom sides of the support plate 32. A rotating shaft 331 is rotatably connected to the middle of the positioning plate 33, and multiple connecting rods 34 are connected to the rotating shaft 331. Pressure rollers are connected to both ends of the connecting rods 34. The outer surface of the pressure roller is made of rubber or polyurethane material, which has good elasticity and can adapt to the surface of different shaped plates. Multiple compression springs 342 are provided on the top of the connecting rods 34. One end of the compression spring 342 is fixed to the connecting rod 34, and the other end is fixed to the bottom of the support plate 32. The tension of the compression springs 342 ensures that the pressure roller always abuts against the sanding belt 23, so that the sanding belt 23 is always in contact with the plate, and at the same time, it can also buffer larger protrusions.

[0035] The implementation principle of this embodiment is as follows: By setting multiple pressure rollers, the contact area between the sanding belt 23 and the board is significantly increased, effectively improving the uniformity of sanding. The setting of the clamping spring 342 ensures that the pressure rollers always maintain contact with the sanding belt 23, ensuring a tight fit between the sanding belt 23 and the board even when there are slight protrusions on the board surface. The setting of the return spring 222 allows the tension roller 22 to automatically adjust the tension of the sanding belt 23, avoiding damage caused by excessive stretching of the sanding belt 23. The overall structure is reasonably designed, easy to operate, and can meet the sanding needs of boards of different shapes and thicknesses. Example

[0036] This embodiment further optimizes the above embodiment by adding a brush 13 structure for cleaning dust from the sanding belt 23. Specifically, a brush 13 is installed inside the dust cover 12, and the brush 13 abuts against the outside of the sanding belt 23. The brush 13 can be made of nylon or natural fibers, which have good wear resistance and cleaning performance. The brush 13 is fixed inside the dust cover 12 by a bracket with an adjustable design, allowing the user to adjust the position of the brush 13 according to the wear of the sanding belt 23, ensuring that it always maintains appropriate pressure with the sanding belt 23.

[0037] The implementation principle of this embodiment is as follows: by adding a brush 13 structure, the function of the equipment is further improved, effectively solving the problem of dust easily adhering to the sanding belt 23 during the sanding process. The brush 13 can promptly remove dust from the sanding belt 23, reducing secondary pollution to the board caused by dust, and also extending the service life of the sanding belt 23. The overall solution is reasonably designed, easy to operate, and has high practicality and promotional value.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A linear sanding machine for sheet metal, characterized in that: The system includes a frame (1), a conveyor belt (11) on the frame (1), a dust cover (12) on the frame (1), and two sanding mechanisms (2) on the dust cover (12). The sanding mechanism (2) includes two sanding rollers (21), the axial direction of the two sanding rollers (21) is perpendicular to the transmission direction of the conveyor belt (11), a tension roller (22) is provided above the sanding rollers (21) on the protective cover, and a sanding belt (23) is sleeved on the sanding rollers (21) and the tension rollers (22). A pressing assembly (3) is provided between the two sanding rollers (21), and the pressing assembly (3) includes multiple pressure rollers, which are used to push the sanding belt (23) to contact the board.

2. The linear sanding machine for sheet metal according to claim 1, characterized in that: The pressing assembly (3) includes a positioning frame (31), with both ends of the positioning frame (31) fixed to the dust cover (12). Positioning plates (33) are provided on both sides of the bottom of the positioning frame (31). A rotating shaft (331) is rotatably connected to the middle of the positioning plate (33). Multiple connecting rods (34) are connected to the rotating shaft (331), and the pressing roller is connected to both ends of the connecting rods (34).

3. A linear sander for sheet metal according to claim 2, characterized in that: The top of the connecting rod (34) is provided with a plurality of compression springs (342), one end of the compression springs (342) is provided on the connecting rod (34), and the other end is provided at the bottom of the positioning frame (31).

4. A linear sander for sheet metal according to claim 1, characterized in that: The pressure roller is detachably connected to the positioning frame (31).

5. A linear sander for sheet metal according to claim 4, characterized in that: The positioning frame (31) has a through hole (311), and a support plate (32) is provided below the positioning frame (31). The positioning plate (33) and the compression spring (342) are both fixedly connected to the bottom of the support plate (32). A guide post (321) is provided on the support plate (32), and a nut is threadedly connected to the guide post (321) after it extends out of the positioning frame (31).

6. A linear sander for sheet metal according to claim 5, characterized in that: A buffer spring (322) is fitted onto the guide post (321).

7. A linear sander for sheet metal according to claim 1, characterized in that: The tensioning roller (22) is fixedly connected to two ends of a sliding column (221), which is slidably connected inside the dust cover (12). A return spring (222) is provided on the outer sleeve of the sliding column (221).

8. A linear sander for sheet metal according to claim 1, characterized in that: A brush (13) is provided inside the dust cover (12), and the brush (13) abuts against the outside of the sand belt (23).

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