Plate surface treatment device

Abstract

The invention provides a plate surface treatment device, which relates to the technical field of plate polishing, and comprises a bracket, a belt conveyor and a belt sander, the top of the support is connected with a fixing plate, the fixing plate is provided with a sliding frame used for supporting the belt sander, the fixing plate is fixedly provided with a first rotating source, a driving shaft of the first rotating source is fixedly sleeved with a first guide rail, the upper surface of the sliding frame is fixedly connected with a second guide rail, and the first guide rail and the second guide rail are jointly connected with a sliding block. The support is provided with a positioning plate, the positioning plate is composed of a limiting part, a fixing part and a conveying part, a ventilation cavity is formed in the positioning plate and penetrates through the limiting part, the fixing part and the conveying part, the top wall of the limiting part is provided with an air conveying hole used for enabling chippings to move into the ventilation cavity, and the conveying part is communicated with a negative pressure fan. The device has the effect of improving the plate polishing effect of the belt sander.

Description

Technical Field

[0001] The invention relates to the technical field of plate grinding, and in particular to a plate surface treatment device. Background Art

[0002] In the wood processing, furniture manufacturing and building materials industries, board surface treatment is a key link to improve product quality and aesthetics. Traditional board sanding relies on the use of sanding belts, which are used to remove burrs and smooth the surface by high-speed friction of the sanding belt on the board surface.

[0003] For example, in the Chinese patent application document with publication number CN111571349A, which is named as a plate dry sanding and deburring machine, a sanding belt rack, a bracket and a polishing machine are installed on the base, and the guide roller on the vacuum adsorption conveyor belt guides the plate into the bottom of the sanding belt rack, so that the driven roller on the sanding belt rack cooperates with the active roller to drive the sanding belt to rotate, and then the sanding belt rubs the surface of the plate to achieve the purpose of deburring. The grinding roller reciprocates along the axial straight line while rotating to achieve the purpose of grinding the plate, and finally the polishing machine performs a grain modification and polishing process and takes it out from the discharge port.

[0004] By adopting the above technical solution, firstly, the plate will move left and right with the sanding belt during the reciprocating movement of the sanding belt, affecting the sanding effect. This displacement directly leads to inconsistent sanding effects, especially in the edge area of ​​the plate, which may be over-sanded or under-sanded, seriously affecting the quality of the final product. Secondly, the dust and debris generated during the sanding process is a problem that cannot be ignored. As the sanding belt continues to work, a large amount of fine wood chips and dust will accumulate on the surface of the sanding belt, which not only reduces the sanding efficiency, but also may cause the sanding belt to wear too quickly due to increased friction. At the same time, the flying dust will also pollute the working environment and pose a threat to the health of the operator. Summary of the invention

[0005] In view of this, the present invention provides a plate surface treatment device, which aims to solve the problem that debris accumulated on the surface of the sanding belt reduces the sanding efficiency and may cause the sanding belt to wear too quickly due to increased friction.

[0006] The cam is provided with a first plate, and a second plate is provided with a second guide rail, and the second guide rail is provided with a second guide rail. The cam is provided with a first plate, and a second guide rail is provided with a second guide rail. The cam is provided with a second guide rail, and the second guide rail is provided with a second guide rail. The cam is provided with a second plate, and the cam is provided with a second guide rail. The cam is provided with a second plate, and the cam is provided with a second guide rail.

[0007] By adopting the above technical scheme, the sanding belt moves to the top of the air supply hole when the belt sander moves to sand the plate, and the negative pressure air flow generated by the negative pressure fan acts on the surface of the sanding belt through the ventilation cavity and the air supply hole, and the debris attached to the surface of the sanding belt is sucked into the ventilation cavity through the air supply hole. While cleaning the debris under grinding, the sanding ability of the sanding belt can be restored, so that the belt sander can continuously and efficiently sand the plate.

[0008] Optionally, the outer side surface of the bracket is fixedly connected to a support screw, the fixing part is slidably sleeved on the support screw, the outer side surface of the support screw is sleeved with a support spring and a fastening nut, the support spring is arranged between the bracket and the fixing part, and the fastening nut is arranged at one end of the fixing part away from the support spring.

[0009] Optionally, the conveying part is made of soft material, and a collecting shell is fixedly connected between the conveying parts on both sides of the bracket, and the conveying part is connected to the inside of the negative pressure fan through the collecting shell.

[0010] By adopting the above technical solution, the conveying part of the soft material can be deformed to adapt to the moving distance of the fixed part, so that the ventilation cavity in the conveying part can maintain a connected state with the collecting shell, and the negative pressure airflow generated by the negative pressure fan can flow through the collecting shell, the ventilation cavity and the air delivery hole in sequence to act on the surface of the sanding belt.

[0011] Optionally, an adjusting screw is rotatably connected to the inner side surface of the first guide rail along the length direction, the sliding block is threadedly connected to the adjusting screw, and the adjusting screw can lock the sliding block to the first guide rail.

[0012] By adopting the above technical solution, the self-rotation of the adjusting screw can drive the sliding block to move along the length direction of the first guide rail, thereby adjusting the radius of the circular trajectory of the sliding block rotating around the first rotation source, and then adjusting the reciprocating distance of the sliding frame in the horizontal direction according to the size of the plate to be polished.

[0013] Optionally, the side walls of the limiting parts on both sides of the bracket that are close to each other are rotatably connected with first supporting rollers, and the first supporting rollers can abut against the plate.

[0014] Optionally, side walls of the limiting parts on both sides of the bracket that are close to each other are provided with extraction holes, and the extraction holes are connected to the inside of the ventilation cavity.

[0015] By adopting the above technical solution, the extraction hole opened on the inner side of the limiting part can timely absorb the debris of the plate after grinding, reduce the interference of the debris on the subsequent grinding work of the belt sander, and at the same time reduce the negative impact of the debris released into the external atmosphere on the health of the operator.

[0016] Optionally, an adjustment plate is fixedly connected to the outer side surface of the limiting portion, and an adjustment inclined surface for adjusting the position of the plate is provided on the side surface of the adjustment plate.

[0017] Optionally, the belt sander includes a second rotation source, a second support roller and a sanding belt, the second rotation source is fixedly connected to the sliding frame, the second support roller and the second rotation source are transmission connected by a belt drive, and the sanding belt is sleeved on the outer side of the second support roller.

[0018] Optionally, the sliding frame is fixedly connected to a mounting plate, the mounting plate is detachably connected to a support plate, the first support roller is rotatably connected to the sliding frame via the support plate, the inner side surface of the support plate is connected to a connecting plate, both ends of the bottom surface of the connecting plate are fixedly connected to limiting plates, and the frosting belt is located between the two limiting plates and abuts against the inner side surfaces of the limiting plates.

[0019] By adopting the above technical solution, the abrasive belt is located between the two limiting plates and abuts against the inner side surfaces of the limiting plates, so that the limiting plates can prevent the abrasive belt from shifting along the axial direction of the supporting roller.

[0020] Optionally, a linear driver is fixedly connected to the upper surface of the connecting plate, a driving shaft of the linear driver is fixedly connected to a connecting frame, the connecting frame is rotatably connected to a fastening roller, and the fastening roller abuts against the inner side surface of the abrasive belt.

[0021] By adopting the above technical solution, the linear drive drives the tightening roller to move upward to tighten the sanding belt, thereby improving the sanding effect of the sanding belt on the plate.

[0022] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. When the sanding belt moves with the belt sander to sand the plate, it moves to the top of the air supply hole. The negative pressure air generated by the negative pressure fan acts on the surface of the sanding belt through the ventilation cavity and the air supply hole, and the debris attached to the surface of the sanding belt is sucked into the ventilation cavity through the air supply hole. While cleaning the debris under grinding, the sanding belt's grinding ability can be restored, so that the belt sander can continue to grind the plate efficiently.

[0023] 2. Since the material of the sanding belt is relatively soft and the middle part of the sanding belt lacks support, the sanding efficiency of the plate is low. The negative pressure airflow output through the air hole acts on the sanding belt to adsorb the sanding belt downward, and then can tighten the sanding belt downward, providing the sanding belt with a pulling force to press against the plate, thereby improving the fitting effect between the soft material sanding belt and the plate, and thus improving the sanding effect of the belt sander on the plate.

[0024] 3. The extraction hole opened on the inner side of the limit part can absorb the debris of the plate in time, reduce the interference of the debris on the subsequent grinding work of the belt sander, and reduce the negative impact of the debris released into the external atmosphere on the health of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 An exploded view of the bracket, the first rotation source and the fixed plate according to an embodiment of the present invention; Figure 3 A top view of a sliding frame according to an embodiment of the present invention; Figure 4 An exploded view of a belt conveyor and a belt sander according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a positioning plate according to an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 5 A partial enlarged view of the middle area A; Figure 7 An exploded view of a sliding frame and a belt sander according to an embodiment of the present invention; Figure 8 A schematic diagram of the internal structure of the sanding belt according to an embodiment of the present invention; Fig. 9 For the embodiment of the present invention Figure 8 A partial enlarged view of area B in the middle.

[0026] Description of reference numerals: 1. bracket; 11. fixing plate; 12. sliding frame; 121. second guide rail; 122. mounting plate; 123. slide rail; 124. fastening screw; 13. first rotation source; 131. first guide rail; 132. adjusting screw; 14. sliding block; 15. supporting screw; 151. supporting spring; 152. fastening nut; 2. belt conveyor; 3. belt sander; 31. second rotation source; 32. second supporting roller; 33. sanding belt; 34. Driving wheel; 35. First conveyor belt; 36. Second conveyor belt; 4. Positioning plate; 41. Limiting part; 411. First supporting roller; 412. Drawing hole; 413. Adjusting plate; 414. Adjusting inclined plane; 42. Fixing part; 43. Conveying part; 44. Ventilation cavity; 45. Air delivery hole; 46. Negative pressure fan; 47. Collecting shell; 5. Support plate; 51. Connecting plate; 511. Limiting plate; 6. Linear drive; 61. Connecting frame; 62. Fastening roller. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 9 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] This embodiment provides a plate surface treatment device, referring to Figure 1 and Figure 2 A plate surface treatment device includes a bracket 1, a belt conveyor 2, a belt sander 3, a driving mechanism for driving the belt sander 3 to reciprocate in a horizontal direction, and a positioning plate 4.

[0029] Reference Figure 1 and Figure 2 The support 1 is erected on a horizontal plane, and the belt conveyor 2 is arranged in the support 1 for transporting the plates to be polished. The conveyor belt of the belt conveyor 2 is a vacuum adsorption conveyor belt. The belt sander 3 is arranged above the belt conveyor 2 for polishing the plates on the belt conveyor 2. The driving mechanism is arranged above the belt sander 3, and the driving mechanism drives the belt sander 3 to move in a direction perpendicular to the moving direction of the belt conveyor 2.

[0030] Reference Figure 2 and Figure 3The driving mechanism includes a fixed plate 11, a sliding frame 12, a first rotation source 13, a first guide rail 131, a second guide rail 121 and a sliding block 14. The fixed plate 11 is fixedly connected to the top of the bracket 1, and the upper surface of the sliding frame 12 is fixedly connected with a slide rail 123. The sliding frame 12 is slidably connected to the bottom surface of the fixed plate 11 through the slide rail 123. The sliding frame 12 can slide in the left and right directions, and the belt sander 3 is fixedly connected to the bottom surface of the sliding frame 12. The first rotation source 13 is fixedly connected to the fixed plate 11, and the first guide rail 131 is fixedly sleeved on the outer side surface of the first rotation source 13. The length direction of the first guide rail 131 is parallel to the moving direction of the belt conveyor 2. The second guide rail 121 is fixedly connected to the upper surface of the sliding frame 12, and the length direction of the second guide rail 121 is parallel to the moving direction of the sliding frame 12. The first guide rail 131 and the second guide rail 121 are perpendicular to each other. The sliding block 14 is disposed at the intersection of the first guide rail 131 and the second guide rail 121. The sliding block 14 is fixedly disposed inside the first guide rail 131, and the sliding block 14 is slidably connected to the second guide rail 121. The upper end of the sliding block 14 is a cube, and the lower end of the sliding block 14 is a cylinder. The upper end of the sliding block 14 is located inside the first guide rail 131, and the lower end of the sliding block 14 is located inside the second guide rail 121.

[0031] The first rotation source 13, the first guide rail 131, the sliding block 14 and the second guide rail 121 form a crank slider structure, the first guide rail 131 rotates around the driving shaft of the first rotation source 13, and the sliding block 14 rotates synchronously with the first guide rail 131. Since the second guide rail 121 is slidably connected to the fixed frame through the sliding frame 12, the rotation of the sliding block 14 can drive the second guide rail 121 and the sliding frame 12 to reciprocate in the left and right directions, and the running direction of the belt sander 3 is parallel to the running direction of the belt conveyor 2. At the same time, the belt sander 3 moves synchronously with the sliding frame 12 to grind the plate.

[0032] Reference Figure 2 and Figure 3 The inner side surface of the first guide rail 131 is fixedly connected with an adjusting screw 132 along the length direction, and the sliding block 14 is threadedly connected with the adjusting screw 132. The sliding block 14 is fixed inside the first guide rail 131 through the adjusting screw 132. The sliding block 14 is slidably connected with the first guide rail 131, and the self-rotation of the adjusting screw 132 can drive the sliding block 14 to move along the length direction of the first guide rail 131, thereby adjusting the radius of the circular trajectory of the sliding block 14 rotating around the first rotation source 13, and then adjusting the reciprocating distance of the sliding frame 12 in the horizontal direction according to the size of the plate to be polished.

[0033] Reference Figure 4 , Figure 5 and Figure 6Two positioning plates 4 are provided, and the two positioning plates 4 are slidably arranged on both sides of the bracket 1. The positioning plate 4 is composed of a limiting portion 41, a fixing portion 42 and a conveying portion 43. The limiting portion 41 is located between the belt conveyor 2 and the belt sander 3. A ventilation cavity 44 is provided inside the positioning plate 4, and the ventilation cavity 44 passes through the limiting portion 41, the fixing portion 42 and the conveying portion 43. The top wall of the limiting portion 41 is provided with an air delivery hole 45 for moving debris into the ventilation cavity 44, and the conveying portion 43 is connected to a negative pressure fan 46.

[0034] The plate to be polished is located between the belt conveyor 2 and the belt sander 3. The belt conveyor 2 transports the plate to the belt sander 3 for polishing. The sanding belt 33 of the belt sander 3 moves parallel to the running direction of the belt conveyor, and the moving speed of the sanding belt 33 is greater than the running speed of the belt conveyor. At the same time, the first rotation source 13 drives the belt sander 3 to move back and forth left and right through the first guide rail 131, the sliding block 14, the second guide rail 121 and the sliding frame 12 to polish the plate. During the polishing process, the inner side of the limit part 41 limits the plate to prevent the belt sander 3 from driving the plate to move when moving in the left and right directions, thereby reducing the polishing effect on the plate.

[0035] Since the surface of the sanding belt 33 is uneven, the surface of the sanding belt 33 will carry debris during the sanding process. Since the air supply hole 45 is located below the belt sander 3, the sanding belt 33 moves to the top of the air supply hole 45 as the belt sander 3 moves to sand the plate. The negative pressure air generated by the negative pressure fan 46 flows through the ventilation cavity 44 and the air supply hole 45 to act on the surface of the sanding belt 33, and the debris attached to the surface of the sanding belt 33 is sucked into the ventilation cavity 44 through the air supply hole 45. While cleaning the debris under grinding, the sanding ability of the sanding belt 33 can be restored, so that the belt sander 3 can continue to sand the plate efficiently.

[0036] In addition, since the material of the sanding belt 33 is relatively soft and the middle part of the sanding belt 33 lacks support, the sanding belt 33 located in the middle has a low efficiency in sanding the plate. Because the air supply hole 45 is located below the belt sander 3, the negative pressure airflow output through the air supply hole 45 acts on the sanding belt 33 to adsorb the sanding belt 33 downward, and then can tighten the sanding belt 33 downward, providing a pulling force for the sanding belt 33 to press downward against the plate, thereby improving the fitting effect between the soft material sanding belt 33 and the plate, and thereby improving the sanding effect of the belt sander 3 on the plate.

[0037] Reference Figure 6The side walls of the limiting parts 41 on both sides of the bracket 1 that are close to each other are rotatably connected with the first support roller 411, and the first support roller 411 can abut against the plate to reduce the friction caused by the side of the plate contacting the side of the limiting part 41 and moving relative to the limiting part 41. The side walls of the limiting parts 41 on both sides of the bracket 1 that are close to each other are provided with extraction holes 412, and the extraction holes 412 are connected to the inside of the ventilation cavity 44. The extraction holes 412 provided on the inner side of the limiting part 41 can timely absorb the debris of the plate being ground, reduce the interference of the debris on the subsequent grinding work of the belt sander 3, and reduce the negative impact of the debris released into the external atmosphere on the health of the operator.

[0038] Reference Figure 4 and Figure 5 The outer side of the bracket 1 is fixedly connected with a support screw 15, the fixing part 42 is slidably sleeved on the support screw 15, the outer side of the support screw 15 is sleeved with a support spring 151, the support spring 151 is in a compressed state, the support spring 151 is arranged between the bracket 1 and the fixing part 42, the support screw 15 is threadedly connected with a fastening nut 152, and the fastening nut 152 is arranged at one end of the fixing part 42 away from the support spring 151. The conveying part 43 is made of soft material, and a collection shell 47 is fixedly connected between the conveying parts 43 arranged on both sides of the bracket 1, and the conveying part 43 is connected to the inside of the negative pressure fan 46 through the collection shell 47.

[0039] The compressed support spring 151 cooperates with the fastening nut 152 to clamp and fix the fixing part 42. When the operator rotates the fastening nut 152, the fixing part 42 can move along the axial direction of the support screw 15. The fixing part 42 pushes the support spring 151 so that the support spring 151 is compressed to different lengths. The limiting part 41 moves synchronously with the fixing part 42, so that the distance between the limiting parts 41 on both sides of the bracket 1 can be adjusted according to the different sizes of the plate. The conveying part 43 of the soft material can be deformed to adapt to the distance of the movement of the fixing part 42, so that the ventilation cavity 44 in the conveying part 43 can maintain a connected state with the collection shell 47, so that the negative pressure airflow generated by the negative pressure fan 46 can flow through the collection shell 47, the ventilation cavity 44 and the air delivery hole 45 in sequence to act on the surface of the frosting belt 33.

[0040] Reference Figure 5 The outer side of the limit portion 41 is fixedly connected with an adjustment plate 413, and the side of the adjustment plate 413 is provided with an adjustment slope 414 for adjusting the position of the plate. The adjustment slopes 414 located on both sides of the bracket 1 abut against the plate, so that the plate can be adjusted to the center during the transportation of the belt conveyor 2, which is conducive to the full contact between the sanding belt 33 and the plate to grind the plate.

[0041] Reference Figure 7The belt sander 3 further includes a second rotation source 31, a second support roller 32, a driving wheel 34, a first conveyor belt 35 and a second conveyor belt 36. Two second support rollers 32 are provided and are rotatably connected to the sliding frame 12, the sanding belt 33 is sleeved on the outer side surfaces of the two second support rollers 32, and the first conveyor belt 35 is sleeved on the outer side surfaces of the two second support rollers 32. The second rotation source 31 is fixedly connected to the sliding frame 12, the driving wheel 34 is fixedly sleeved on the driving shaft of the second rotation source 31, and the second conveyor belt 36 is sleeved on the outer side surfaces of the driving wheel 34 and a second support roller 32. The second rotation source 31 drives the second support roller 32 to rotate through the driving wheel 34 and the second conveyor belt 36, and the transmission is carried out between the two second support rollers 32 through the first conveyor belt 35, thereby driving the sanding belt 33 to run.

[0042] Reference Figure 7 , Figure 8 and Fig. 9 The sliding frame 12 is fixedly connected to a mounting plate 122, and the mounting plate 122 is detachably connected to the support plate 5 through a fastening screw 124. The first support roller 411 is rotatably connected to the sliding frame 12 through the support plate 5. The inner side of the support plate 5 is connected to a connecting plate 51, and both ends of the bottom surface of the connecting plate 51 are fixedly connected to limit plates 511. The frosting belt 33 is located between the two limit plates 511 and abuts against the inner side of the limit plates 511, so that the limit plates 511 can prevent the frosting belt 33 from moving along the axial direction of the support roller and causing deviation.

[0043] Reference Figure 8 The upper surface of the connecting plate 51 is fixedly connected with a linear driver 6, the driving shaft of the linear driver 6 is fixedly connected with a connecting frame 61, the connecting frame 61 is rotatably connected with a fastening roller 62, and the fastening roller 62 abuts against the inner side of the grinding belt 33. The linear driver 6 drives the fastening roller 62 to move upward to tighten the grinding belt 33, thereby improving the grinding effect of the grinding belt 33 on the plate.

[0044] The implementation principle of a plate surface treatment device according to an embodiment of the present invention is as follows: the belt conveyor 2 transports the plate to the belt sander 3 for grinding, and the first rotating source 13 drives the belt sander 3 to move back and forth to grind the plate through the first guide rail 131, the sliding block 14, the second guide rail 121 and the sliding frame 12. During the grinding process, the inner side of the limiter 41 limits the plate. When the sanding belt 33 moves with the belt sander 3 to grind the plate, it moves to the top of the air supply hole 45, and the negative pressure airflow generated by the negative pressure fan 46 acts on the surface of the sanding belt 33 through the ventilation cavity 44 and the air supply hole 45, and the debris attached to the surface of the sanding belt 33 is sucked into the ventilation cavity 44 through the air supply hole 45. At the same time, the negative pressure airflow output through the air supply hole 45 acts on the sanding belt 33 to adsorb the sanding belt 33 downward, and then can tighten the sanding belt 33 downward.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A plate surface treatment device, comprising a support (1), a belt conveyor (2) and a belt sander (3), characterized in that: The top of the bracket (1) is connected to a fixed plate (11), the fixed plate (11) is provided with a sliding frame (12) for supporting the belt sander (3), a first rotation source (13) is fixedly mounted on the fixed plate (11), a driving shaft fixing sleeve of the first rotation source (13) is provided with a first guide rail (131), the upper surface of the sliding frame (12) is fixedly connected to a second guide rail (121), and the first guide rail (131) and the second guide rail (121) are commonly connected to a sliding block (14); Positioning plates (4) for limiting the position of the plate are arranged opposite to both sides of the bracket (1); the positioning plate (4) comprises a limiting portion (41), a fixing portion (42) and a conveying portion (43); the limiting portion (41) is located between the belt conveyor (2) and the belt sander (3); a ventilation cavity (44) is provided inside the positioning plate (4); the ventilation cavity (44) penetrates the limiting portion (41), the fixing portion (42) and the conveying portion (43); a top wall of the limiting portion (41) is provided with an air delivery hole (45) for moving debris into the ventilation cavity (44); and the conveying portion (43) is connected to a negative pressure fan (46).

2. A plate surface treatment device according to claim 1, characterized in that: The outer side surface of the bracket (1) is fixedly connected to a support screw (15); the fixing portion (42) is slidably sleeved on the support screw (15); the outer side surface of the support screw (15) is sleeved with a support spring (151) and a fastening nut (152); the support spring (151) is arranged between the bracket (1) and the fixing portion (42); and the fastening nut (152) is arranged at one end of the fixing portion (42) away from the support spring (151).

3. A plate surface treatment device according to claim 1, characterized in that: The conveying portion (43) is made of a soft material, and a collecting shell (47) is fixedly connected between the conveying portions (43) on both sides of the bracket (1), and the conveying portion (43) is connected to the inside of the negative pressure fan (46) through the collecting shell (47).

4. A plate surface treatment device according to claim 1, characterized in that: An adjusting screw (132) is rotatably connected to the inner side surface of the first guide rail (131) along the length direction, the sliding block (14) is threadedly connected to the adjusting screw (132), and the adjusting screw (132) can lock the sliding block (14) to the first guide rail (131).

5. The plate surface treatment device according to claim 1, characterized in that: The side walls of the limiting parts (41) on both sides of the bracket (1) that are close to each other are rotatably connected to first support rollers (411), and the first support rollers (411) can abut against the plate.

6. A plate surface treatment device according to claim 1, characterized in that: Material extraction holes (412) are provided on the side walls of the limiting parts (41) on both sides of the bracket (1) that are close to each other. The material extraction holes (412) are in communication with the interior of the ventilation cavity (44).

7. The plate surface treatment device according to claim 1, characterized in that: An adjustment plate (413) is fixedly connected to the outer side surface of the limiting portion (41), and an adjustment inclined surface (414) for adjusting the position of a plate is provided on the side surface of the adjustment plate (413).

8. The plate surface treatment device according to claim 5, characterized in that: The belt sander (3) comprises a second rotation source (31), a second support roller (32) and a sanding belt (33); the second rotation source (31) is fixedly connected to the sliding frame (12); the second support roller (32) and the second rotation source (31) are connected in transmission by a belt transmission; and the sanding belt (33) is sleeved on the outer side of the second support roller (32).

9. A plate surface treatment device according to claim 8, characterized in that: The sliding frame (12) is fixedly connected to a mounting plate (122), the mounting plate (122) is detachably connected to a support plate (5), the first support roller (411) is rotatably connected to the sliding frame (12) via the support plate (5), the inner side surface of the support plate (5) is connected to a connecting plate (51), both ends of the bottom surface of the connecting plate (51) are fixedly connected to limiting plates (511), and the frosting belt (33) is located between the two limiting plates (511) and abuts against the inner side surfaces of the limiting plates (511).

10. A plate surface treatment device according to claim 9, characterized in that: The upper surface of the connecting plate (51) is fixedly connected to a linear driver (6), the driving shaft of the linear driver (6) is fixedly connected to a connecting frame (61), the connecting frame (61) is rotatably connected to a fastening roller (62), and the fastening roller (62) abuts against the inner side surface of the grinding belt (33).

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