Plywood surface sanding device

Abstract

The invention discloses a plywood surface sanding device which comprises a rack, a plurality of rollers, a sanding box and an air extractor, and the rollers are rotationally arranged on the rack and used for conveying boards; the sanding box is arranged on the machine frame, openings allowing plates to pass through are formed in the front end and the rear end of the sanding box, a sanding mechanism is arranged in the sanding box, a corresponding roller in the sanding box is a hollow roller, a plurality of through holes communicated with the interior of the roller are formed in the surface of the roller, roller shafts are arranged at the two ends of the roller, and the roller shafts are hollow roller shafts. The interior of the roller shaft is communicated with the interior of the roller, and the outer end of the roller shaft is connected with an air extractor through a movable connector. According to the sanding device, a plate is not prone to deviation during sanding, the sanding stability and effect are improved, the defective rate is reduced, in addition, dust generated during sanding can be collected through air exhaust, the situation that sand is left on the plate face, and the situation that operators and the surrounding environment are affected by the dust is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of plywood processing, and specifically relates to a plywood surface sanding device. Background Art

[0002] Plywood is a three-layer or multi-layer plate-like material made by slicing wood segments into veneers or planing wood squares into thin woods, and then gluing them with adhesives. Usually, an odd number of veneers are used, and the fiber directions of adjacent veneers are glued perpendicular to each other.

[0003] During the plywood processing, it is necessary to sand and polish the surface of the board to remove the unevenness on the surface of the board, improve the flatness of the board surface, and facilitate subsequent processing. When sanding, a roller is usually used to drive a sanding belt for grinding. The board is sanded while being conveyed, and the board is prone to move, affecting the stability of sanding. Moreover, a large amount of dust is generated during sanding, and the sand dust remaining on the board surface also affects the sanding quality, endangering the operators and the surrounding environment, and corresponding improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a plywood surface sanding device to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A plywood surface sanding device includes a frame, rollers, a sanding box, and an air extraction device. A plurality of rollers are provided, and the rollers rotate on the frame for conveying the board. The sanding box is arranged on the frame. Openings for the board to pass through are provided at the front and rear ends of the sanding box. A sanding mechanism is arranged inside the sanding box. The corresponding rollers inside the sanding box are hollow rollers. A plurality of through holes communicating with the inside of the roller are provided on the surface of the roller. Roller shafts are provided at both ends of the roller. The roller shafts are hollow roller shafts, and the inside of the roller shafts communicates with the inside of the roller. The outer ends of the roller shafts are connected to the air extraction device through movable joints.

[0006] As a preference of this technical solution, the plurality of through holes are evenly distributed along the length direction of the roller surface.

[0007] As a preference of this technical solution, the sanding mechanism includes a driving roller, a driven roller, a sanding motor, and a sanding belt. The driving roller and the driven roller are arranged up and down on the inner wall of the sanding box. The sanding motor is arranged on the outer side wall of the sanding box. The output end of the sanding motor is connected to the driving roller to drive the driving roller to rotate inside the sanding box. The sanding belt is sleeved on the driving roller and the driven roller.

[0008] As a preference of this technical solution, limit blocks for the sanding belt are arranged on the inner wall of the sanding box. Grooves are provided on the limit blocks. The edges of the sanding belt are arranged in the grooves, and wear-resistant rubber blocks are arranged in the grooves.

[0009] Preferably, the air extraction device includes an air pipe, a collection box and an air pump. The air pipe includes a bronchus, an intermediate pipe and a main air pipe. One end of the bronchus is connected to a roller through a movable joint, the other end of the bronchus is connected to the intermediate pipe, one end of the intermediate pipe is connected to the main air pipe, the other end of the main air pipe is connected to the collection box, the intake end of the air pump is connected to the collection box, and a filter screen is arranged in the collection box.

[0010] Preferably, a sealing plate is arranged below the corresponding roller in the sanding box.

[0011] Preferably, it further includes a controller. A sensor is arranged at the opening of the sanding box, and the sensor, the sanding mechanism, the air extraction device and the controller are electrically connected.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention transports the board into the sanding box through the roller. The sanding mechanism sands the board, and the air extraction device extracts air inside the roller to generate suction. This suction generates a downward force on the board on the roller, making the board not easily shift during sanding, improving the stability and sanding effect of sanding. In addition, the air extraction can collect the dust generated by sanding, avoid leaving it on the board surface, reduce the situation of sand padding on the board surface, reduce the generation of defective products, and also avoid affecting the operators and the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0014] Figure 2 For the present invention Figure 1 is a partial cross-sectional view.

[0015] Figure 3 For the present invention Figure 2 is a plan view.

[0016] Figure 4 is a side view schematic diagram of the present invention.

[0017] Figure 5 is a structural schematic diagram of the limiting block of the present invention.

[0018] Figure 6 is a structural schematic diagram of the sanding mechanism of the present invention.

[0019] Figure 7 is a schematic diagram of the connection of the air pipe of the roller of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-7 , a surface sanding device for plywood of the present invention includes a frame 1, a roller 2, a sanding box 3 and an air extraction device. A plurality of rollers 2 are provided, and the rollers 2 rotate on the frame 1 and are driven by a motor for conveying a board 15. The sanding box 3 is arranged on the frame 1. The bottom plate of the sanding box 3 is not sealed, that is, it is buckled on the frame 1. Openings for the board 15 to pass through are provided at the front and rear ends of the sanding box 3. A sanding mechanism is arranged in the sanding box 3. The roller 2 corresponding to the sanding box 3 is a hollow roller. A plurality of through holes communicating with the inside of the roller 2 are arranged on the surface of the roller 2. Roller shafts are arranged at both ends of the roller 2. The roller shafts are hollow roller shafts, and the inside of the roller shafts communicates with the inside of the roller 2. The outer ends of the roller shafts are connected to the air extraction device through movable joints.

[0022] When the present invention is specifically implemented, the plurality of through holes are evenly distributed along the length direction of the surface of the roller 2. The plurality of through holes form a row along the length direction of the roller 2. Multiple rows are arranged on the surface of the roller 2. The roller shafts of the roller 2 rotate on the frame 1 through bearings. One end of the roller shaft extends out of the frame 1 and is connected to the air extraction device. The air extraction device includes an air pipe, a collection box 13 and an air pump 14. The air pipe includes a bronchial tube 10, an intermediate tube 11 and a main air pipe 12. One end of the bronchial tube 10 is connected to the roller shaft through a movable joint, and the other end of the bronchial tube 10 is connected to the intermediate tube 11. The intermediate tube 11 is connected to one end of the main air pipe 12. The other end of the main air pipe 12 is connected to the collection box 13. The intake end of the air pump 14 is connected to the collection box 13. A filter screen is arranged in the collection box 13. The filter screen divides the inside of the collection box 13 into two regions. The intake end of the air pump 14 communicates with one region, and the main air pipe 12 communicates with the other region. The motor of the air pump 14 is a variable-frequency motor, and the suction force can be controlled through the variable-frequency motor, so that the board 15 can be conveyed on the roller 2 or sucked on the roller 2 through the suction force.

[0023] In the specific implementation of the present invention, the sanding mechanism includes a driving roller 4, a driven roller 5, a sanding motor 6, and a sanding belt 7. The driving roller 4 and the driven roller 5 are arranged vertically on the inner wall of the sanding box 3. The two ends of the driving roller 4 and the driven roller 5 are provided with roller shafts, and the roller shafts rotate on the inner wall of the sanding box 3 through bearings. The sanding motor 6 is arranged on the outer side wall of the sanding box 3, and the output end of the sanding motor 6 is connected to the roller shaft of the driving roller 4 to drive the driving roller 4 to rotate inside the sanding box 3. The sanding belt 7 is sleeved on the driving roller 4 and the driven roller 5. A regulator for adjusting the distance between the driving roller 4 and the driven roller 5 can also be provided on the sanding box 3. The driving roller 4 or the driven roller 5 close to the plate 15 slides on the side wall of the sanding box 3 through the bearing seats at both ends. The regulator is connected to the bearing seat and drives the bearing seat to slide on the side wall of the sanding box 3, so as to realize the adjustment of the distance between the driving roller 4 and the driven roller 5.

[0024] In the specific implementation of the present invention, a limiting block 9 for the sanding belt 7 is provided on the inner wall of the sanding box 3. A groove is provided on the limiting block 9, and the edge of the sanding belt 7 is arranged in the groove. An abrasion-resistant rubber block 16 is arranged in the groove. The limiting block 9 is used to limit the deviation of the sanding belt 7. Limiting blocks 9 are provided on two opposite side walls of the sanding box 3, and two limiting blocks 9 are provided on each side wall, respectively used to limit the outgoing part and the return part of the sanding belt. The abrasion-resistant rubber block 16 prevents the sanding belt from being damaged by friction with the side wall and the bottom of the groove when the sanding belt deviates, that is, the abrasion-resistant rubber block 16 is also provided with a groove, and the bottom and side wall of the abrasion-resistant rubber block 16 are attached to the bottom and side wall of the limiting block 9 to achieve the protection function. A sealing plate 8 is provided below the corresponding roller 2 in the sanding box 3. The sealing plate 8 is fixed on the frame 1, and side plates are provided at the front and rear ends. The side plates extend upward but do not touch the roller 2. The sealing plate 8 and the sanding box 3 form a sanding area to reduce the escape of dust generated by sanding. The present invention also includes a controller. A sensor is provided at the opening of the sanding box 3. The sensor, the sanding mechanism, the air extraction device and the controller are electrically connected to realize the automation of the whole device.

[0025] When the present invention works, the plate is conveyed into the sanding box through the roller on the frame. The sanding mechanism in the sanding box sands the plate. The air extraction device generates suction through air extraction, generates suction on the plate on the roller, so that the plate is subjected to a downward force, and the plate is not easy to shift during the sanding work, and the sanding effect is good. The air extraction can collect the dust generated by sanding and avoid the dust from affecting the operators and the surrounding environment.

[0026] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the technical field can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A plywood surface sanding device, characterized in that: It includes a frame, rollers, a sanding box and an exhaust device. A plurality of rollers are provided, and the rollers rotate on the frame for conveying the plate. The sanding box is provided on the frame, and the front and rear ends of the sanding box are provided with openings for the plate to pass through. A sanding mechanism is provided in the sanding box. The corresponding rollers in the sanding box are hollow rollers, and a plurality of through holes communicating with the inside of the rollers are provided on the surface of the rollers. Roller shafts are provided at both ends of the rollers, and the roller shafts are hollow roller shafts. The inside of the roller shafts is communicated with the inside of the roller, and the outer ends of the roller shafts are connected to the exhaust device through movable joints.

2. The plywood surface sanding device according to claim 1, characterized in that: The multiple through holes are evenly distributed along the length direction of the roller surface.

3. The plywood surface sanding device according to claim 1, characterized in that: The sanding mechanism comprises an active roller, a passive roller, a sanding motor and a sanding belt. The active roller and the passive roller are arranged on the inner wall of the sanding box from top to bottom. The sanding motor is arranged on the outer wall of the sanding box. The output end of the sanding motor is connected to the active roller to drive the active roller to rotate in the sanding box. The sanding belt is sleeved on the active roller and the passive roller.

4. The plywood surface sanding device according to claim 3, characterized in that: A limit block of the sanding belt is arranged on the inner wall of the sanding box, a groove is arranged on the limit block, the edge of the sanding belt is arranged in the groove, and a wear-resistant rubber block is arranged in the groove.

5. The plywood surface sanding device according to claim 1, characterized in that: The air extraction device includes an air pipe, a collecting box and an air pump. The air pipe includes a bronchial pipe, an intermediate pipe and a main air pipe. One end of the bronchial pipe is connected to the intermediate pipe through a movable joint and a roller shaft, and the other end of the bronchial pipe is connected to the intermediate pipe. The intermediate pipe is connected to one end of the main air pipe, and the other end of the main air pipe is connected to the collecting box. The air inlet end of the air pump is connected to the collecting box, and a filter is arranged in the collecting box.

6. The plywood surface sanding device according to claim 1, characterized in that: A sealing plate is arranged below the corresponding roller in the sanding box.

7. The plywood surface sanding device according to claim 1, characterized in that: The utility model also comprises a controller. A sensor is arranged at the opening of the sanding box. The sensor, the sanding mechanism and the air extraction device are electrically connected with the controller.

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