Automatic sandpaper polishing machine with dust collection function

Abstract

The application discloses an automatic sandpaper changing polishing machine with dust collection function, which comprises a main unit and a dust collection unit, the main unit comprises a processing table, a vertical plate is fixed on the top of the processing table, a hollow column is rotationally connected in the vertical plate, a plurality of rectangular frames are fixed and communicated on the outer side of the hollow column at equal intervals along the radial direction of the hollow column, a rectangular plate is slidably connected in the rectangular frame, a main arc-shaped plate is fixed on the side of the rectangular plate away from the hollow column, a secondary arc-shaped plate is rotationally connected to the two sides of the main arc-shaped plate through a hinge, and rubber pads are fixed on the outer sides of the plurality of main arc-shaped plates and secondary arc-shaped plates. When the rectangular plate moves, the hollow plate will move along with the rectangular plate, the position of the rectangular frame and the L-shaped plate is fixed, when the hollow plate moves, the L-shaped plate will pull the first rotating rod and drive the first rotating rod to rotate, when the first rotating rod rotates, the moving plate and the pulling plate will move, when the pulling plate moves, the secondary arc-shaped plate will rotate towards the direction of approaching the rectangular plate, and the movement of the secondary arc-shaped plate is prevented from being blocked by the main arc-shaped plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polishing machines, in particular to an automatic sandpaper changing polishing machine with dust collection function. BACKGROUND

[0002] A polishing machine is a mechanical processing equipment for surface mechanical treatment of workpieces to obtain the required surface finish. In the polishing process, the polishing machine can eliminate burrs and defects on the surface of the workpiece, thereby improving the flatness and overall aesthetics of the workpiece surface. It is particularly important in the manufacture of precision instruments and ornaments. There are many types of polishing machines, and common types of polishing machines include drum polishing machines, flat polishing machines, disc polishing machines, etc.

[0003] Publication No. CN215788996U discloses a disc polishing machine, which comprises a rack, a polishing wheel, a front and rear moving workbench, a left and right moving workbench, a lifting workbench and a turntable for fixing workpieces. The front and rear moving workbench is slidably connected to the bottom of the rack, the left and right moving workbench is slidably connected to the front and rear moving workbench, the lifting workbench is provided on the left and right moving workbench to drive the turntable to move up and down, and the turntable is close to the polishing wheel to polish the workpieces.

[0004] When using a polishing machine, sandpaper is usually used to polish workpieces. The sandpaper needs to be replaced after a period of use due to wear and tear. The existing flat polishing machine is very convenient to replace the sandpaper. The current flat polishing machine can directly adsorb the sandpaper by controlling the suction cup with a pneumatic cylinder, which can automatically replace the sandpaper. However, when replacing the sandpaper of the disc polishing machine, there are mainly two ways. One is to adhere the annular sandpaper to the disc and gradually rotate the disc so that the sandpaper covers the disc. The sandpaper is prone to wrinkles, deviation and other problems during laying, and it is also very troublesome to replace it subsequently. The second way is to put the annular sandpaper on the disc. However, the diameter of the annular sandpaper is usually only slightly larger than the diameter of the disc. When the annular sandpaper is put on the disc, it needs to be slowly rotated and moved to put it on the disc, which takes a long time and is very troublesome to replace. SUMMARY

[0005] Therefore, the automatic sandpaper polishing machine with dust collection function aims to solve the technical problem that there are mainly two ways when the disc polishing machine changes the sandpaper, one is to adhere the annular sandpaper to the disc and gradually rotate the disc to make the sandpaper cover the disc, and the sandpaper laying is prone to wrinkle, deviation and other conditions, and the subsequent replacement is also very troublesome, and the other is to sleeve the annular sandpaper to the disc, but the diameter of the annular sandpaper is usually only slightly larger than the diameter of the disc, and when the annular sandpaper is sleeved to the disc, it needs to be slowly rotated and moved to sleeve it to the disc, which needs a long time and is very troublesome to replace.

[0006] To achieve the above technical purpose, the technical scheme adopted by the present application is as follows.

[0007] The present application provides an automatic sandpaper polishing machine with dust collection function:

[0008] It includes a main unit and a dust collection unit, the main unit includes a processing table, the top of the processing table is fixed with a vertical plate, the vertical plate is rotationally connected with a hollow column inside, the outer side of the hollow column is fixed and communicated with a plurality of rectangular frames along the radial direction at equal intervals, the rectangular frame is slidingly connected with a rectangular plate inside, the side away from the hollow column of the rectangular plate is fixed with a main arc-shaped plate, the two sides of the main arc-shaped plate are rotationally connected with a secondary arc-shaped plate through a hinge, the outer side of a plurality of main arc-shaped plates and secondary arc-shaped plates is fixed with a rubber pad, a plurality of main arc-shaped plates and a plurality of secondary arc-shaped plates can form a circular ring to support the annular sandpaper, the hollow column is provided with a driving assembly for driving the main arc-shaped plate to move, the rectangular plate is provided with a control assembly for controlling the rotation of the secondary arc-shaped plate, the driving assembly can drive the control assembly to work synchronously when working, the dust collection unit includes a plurality of dust collection hoods distributed on the top of the processing table, a plurality of dust collection pipes are fixed in the processing table, and a plurality of dust collection hoods are respectively installed on the corresponding dust collection pipes.

[0009] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, wherein: the bottom of a plurality of dust collection pipes is fixed and communicated with a communication pipe, two supports are fixed on the bottom of the processing table, a connecting frame is fixed between the two supports, a suction fan is installed on the connecting frame, a guide pipe is fixed and communicated with the air inlet of the suction fan, the end away from the suction fan of the guide pipe is fixed and communicated with the communication pipe, a discharge pipe is fixed and communicated with the air outlet of the suction fan, the end away from the suction fan of the discharge pipe is fixed and communicated with a dust collection bag, and a dust discharge pipe is fixed and communicated with the dust collection bag.

[0010] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, one side of the processing table is fixed with an extension plate, a stroke groove is formed in the extension plate, a protruding block is slidably connected in the stroke groove, the protruding block is in close contact with the inner walls on both sides of the stroke groove, a receiving cylinder is fixed on the top of the protruding block, a second ear plate is fixed on the top of the extension plate, a second hydraulic cylinder is installed on the second ear plate, the elongated end of the second hydraulic cylinder is fixed with the protruding block, a second guide rod is fixed in the stroke groove, the second guide rod penetrates through the protruding block, and the protruding block slides on the outer side of the second guide rod.

[0011] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, a processing groove is formed in the processing table, a storage plate is slidably connected in the processing groove, two first guide rods are fixed on the inner wall of the processing groove, the first guide rods penetrate through the storage plate, and the storage plate is slidably fitted on the outer side of the first guide rods.

[0012] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, two first ear plates are fixed at the bottom of the processing table, a lead screw is rotatably connected between the two first ear plates, a first motor is installed on one side of one of the first ear plates, the output end of the first motor is fixed with one end of the lead screw, a connecting block is fixed at the bottom of the storage plate, and the lead screw penetrates through the connecting block and is threadedly connected with the connecting block.

[0013] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, a driven wheel is fixed on the outer side of the hollow column, a rotating shaft is rotatably connected in the vertical plate, a driving wheel is fixed on one end of the rotating shaft, the driving wheel and the driven wheel are rotatably connected through a belt, and a second motor is installed on one side of the vertical plate, one end of the rotating shaft is fixed with the output end of the second motor.

[0014] As a preferred scheme of the automatic sandpaper polishing machine with dust collection function, a U-shaped seat is fixed on one side of the vertical plate, a first hydraulic cylinder is installed on the inner wall of the U-shaped seat, a disc is fixed on the elongated end of the first hydraulic cylinder, a cylindrical rod is slidably connected in the hollow column, the cylindrical rod is rotatably connected with the disc, limit grooves are formed in the inner walls on both sides of the U-shaped seat, two limit rods are fixed on the outer side of the disc, and the limit rods are slidably fitted in the corresponding limit grooves.

[0015] As a preferred scheme of the automatic polishing machine with sandpaper changing and dust collection function, the control assembly comprises hollow plates fixed on both sides of the rectangular plate, a moving plate is slidably connected in the hollow plate, a pulling plate is fixed on the side of the moving plate away from the rectangular plate, a U-shaped plate is fixed on the inner wall of the auxiliary arc-shaped plate, the pulling plate and the U-shaped plate are rotationally connected, a groove is formed in the hollow plate, a second hinge seat is fixed on the side of the moving plate extending into the groove, L-shaped plates are fixed on both sides of the rectangular frame, a first hinge seat is fixed on the side of the L-shaped plate in the groove, and a first rotating rod is rotationally connected in the first hinge seat and the second hinge seat.

[0016] As a preferred scheme of the automatic polishing machine with sandpaper changing and dust collection function, the control assembly comprises hollow plates fixed on both sides of the rectangular plate, a moving plate is slidably connected in the hollow plate, a pulling plate is fixed on the side of the moving plate away from the rectangular plate, a U-shaped plate is fixed on the inner wall of the auxiliary arc-shaped plate, the pulling plate and the U-shaped plate are rotationally connected, a groove is formed in the hollow plate, a second hinge seat is fixed on the side of the moving plate extending into the groove, L-shaped plates are fixed on both sides of the rectangular frame, a first hinge seat is fixed on the side of the L-shaped plate in the groove, and a first rotating rod is rotationally connected in the first hinge seat and the second hinge seat.

[0017] As a preferred scheme of the automatic polishing machine with sandpaper changing and dust collection function, the control assembly comprises hollow plates fixed on both sides of the rectangular plate, a moving plate is slidably connected in the hollow plate, a pulling plate is fixed on the side of the moving plate away from the rectangular plate, a U-shaped plate is fixed on the inner wall of the auxiliary arc-shaped plate, the pulling plate and the U-shaped plate are rotationally connected, a groove is formed in the hollow plate, a second hinge seat is fixed on the side of the moving plate extending into the groove, L-shaped plates are fixed on both sides of the rectangular frame, a first hinge seat is fixed on the side of the L-shaped plate in the groove, and a first rotating rod is rotationally connected in the first hinge seat and the second hinge seat.

[0018] From the above technical scheme, the present application has the following beneficial effects:

[0019] 1: When the annular sandpaper needs to be replaced, the first hydraulic cylinder is elongated to drive the disc and the cylindrical rod to move, the cylindrical rod moves to drive the second rotating rod to rotate, the second rotating rod rotates to drive the rectangular plate to move towards the rectangular frame, since the rectangular plate moves towards the hollow column, the main arc-shaped plate is no longer taut with the annular sandpaper, that is, the annular sandpaper is loosened from the main arc-shaped plate, and the annular sandpaper is convenient to replace.

[0020] 2: When the rectangular plate moves, the hollow plate moves together, while the positions of the rectangular frame and the L-shaped plate are fixed, so when the hollow plate moves, the L-shaped plate pulls the first rotating rod to drive the first rotating rod to rotate, the first rotating rod rotates to drive the moving plate and the pulling plate to move, the pulling plate moves to drive the auxiliary arc-shaped plate to rotate towards the rectangular plate, and the movement of the auxiliary arc-shaped plate is prevented from blocking the movement of the main arc-shaped plate.

[0021] 3: When the main arc-shaped plate moves a distance, the blade protrudes from the notch, at this time, the user only needs to pull the annular sandpaper from the opposite direction of the blade, and the annular sandpaper can be cut by the blade, so that the annular sandpaper is convenient to take down.

[0022] 4. Place the ring-shaped sandpaper to be replaced into the storage cylinder. At this time, the second hydraulic cylinder extends, causing the protrusion and storage cylinder to move. This moves the storage cylinder to the outside of the main arc plate and the secondary arc plate. Then, the first hydraulic cylinder retracts, causing the cylindrical rod to move. When the cylindrical rod moves, it causes the second rotating rod to rotate in the opposite direction. When the second rotating rod rotates, it causes the rectangular plate to move away from the hollow column. This, in turn, causes the rectangular plate and the main arc plate to move closer to the inner wall of the storage cylinder. Since the L-shaped plate is fixed when the rectangular plate moves, it also causes the first rotating rod to rotate. When the first rotating rod rotates, it causes the moving plate and the pulling plate to move. This, in turn, causes the secondary arc plate to rotate away from the rectangular plate. When the limiting rod and the inner wall of the limiting groove on one side abut against each other, the main arc plate and the secondary arc plate form a ring. At this time, the rubber pad on the outside of the main arc plate and the secondary arc plate fits against the inner wall of the ring-shaped sandpaper. That is, the ring-shaped sandpaper is installed on the main arc plate and the secondary arc plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0024] Figure 1 This invention provides a structural schematic diagram of an automatic sandpaper-changing polishing machine with a dust-collecting function;

[0025] Figure 2 A schematic diagram of the structure of the main arc plate and the secondary arc plate when they are closed, as provided by the present invention;

[0026] Figure 3 Another structural schematic diagram of an automatic sandpaper changing polishing machine with dust suction function provided by the present invention;

[0027] Figure 4 Another structural schematic diagram of an automatic sandpaper changing polishing machine with dust suction function provided by the present invention;

[0028] Figure 5 Provided by the present invention Figure 2 Another perspective on the structural decomposition;

[0029] Figure 6 Provided by the present invention Figure 5 Another perspective on the local structure;

[0030] Figure 7 Provided by the present invention Figure 6 Schematic diagram of the structure at point A;

[0031] Figure 8 Provided by the present inventionFigure 2 Fig. 7 is a schematic view of a half section of the structure.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 100, main unit; 101, processing table; 102, vertical plate; 103, hollow column; 104, rectangular frame; 105, rectangular plate; 106, main arc-shaped plate; 107, auxiliary arc-shaped plate; 108, hinge; 109, rubber pad; 110, processing groove; 111, storage plate; 112, first guide rod; 113, first ear plate; 114, first motor; 115, connecting block; 116, screw rod; 117, driven wheel; 118, rotating shaft; 119, driving wheel; 120, belt; 121, second motor; 122, cylindrical rod; 123, hollow plate; 124, moving plate; 125, pulling plate; 126, U-shaped plate; 127, groove; 128, L-shaped plate; 129, first hinged seat; 130, second hinged seat; 131, second rotating rod; 132, tool holder; 133, blade; 134, notch; 135, third hinged seat; 136, fourth hinged seat; 137, second rotating rod; 138, U-shaped seat; 139, first hydraulic cylinder; 140, disc; 141, limiting groove; 142, limiting rod; 200, dust collection unit; 201, dust collection cover; 202, dust collection pipe; 203, communication pipe; 204, air extractor; 205, guide pipe; 206, discharge pipe; 207, dust collection bag; 208, dust discharge pipe; 209, support; 210, connecting frame; 211, extension plate; 212, stroke groove; 213, protrusion; 214, storage cylinder; 215, second hydraulic cylinder; 216, second ear plate; 217, second guide rod. DETAILED DESCRIPTION

[0033] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore, the present application is not limited to the specific embodiments disclosed below.

[0035] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments.

[0036] Thirdly, the present application is described in detail in combination with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of illustration, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions including length, width and depth should be included in the actual manufacture.

[0037] For an embodiment of the present application, an automatic sandpaper polishing machine with dust collection function is provided, comprising a main unit 100 and a dust collection unit 200. The main unit 100 comprises a processing table 101, and a vertical plate 102 is fixed on the top of the processing table 101. A hollow column 103 is rotatably connected in the vertical plate 102. A plurality of rectangular frames 104 are fixed and communicated on the outer side of the hollow column 103 at equal intervals along the radial direction. A rectangular plate 105 is slidably connected in the rectangular frame 104. A main arc-shaped plate 106 is fixed on the side of the rectangular plate 105 away from the hollow column 103. A secondary arc-shaped plate 107 is rotatably connected to both sides of the main arc-shaped plate 106 through a hinge 108. Rubber pads 109 are fixed on the outer sides of the plurality of main arc-shaped plates 106 and the plurality of secondary arc-shaped plates 107. The plurality of main arc-shaped plates 106 and the plurality of secondary arc-shaped plates 107 can form a circular ring to support the annular sandpaper. A driving assembly for driving the main arc-shaped plate 106 to move is arranged in the hollow column 103. A control assembly for controlling the rotation of the secondary arc-shaped plate 107 is arranged on the rectangular plate 105. The driving assembly can drive the control assembly to work synchronously when the driving assembly works. The dust collection unit 200 comprises a plurality of dust collection hoods 201 distributed on the top of the processing table 101. A plurality of dust collection pipes 202 are fixed in the processing table 101. The plurality of dust collection hoods 201 are respectively installed on the corresponding dust collection pipes 202.

[0038] The processing table 101 side is fixed with the extension plate 211, the extension plate 211 is internally provided with the stroke groove 212, the stroke groove 212 is slidably connected with the lug 213, the lug 213 is attached to the inner wall of the stroke groove 212 on both sides, the lug 213 top is fixed with the receiving cylinder 214, the extension plate 211 top is fixed with the second ear plate 216, the second ear plate 216 is installed with the second hydraulic cylinder 215, the second hydraulic cylinder 215 elongated end is fixed with the lug 213, the stroke groove 212 is fixed with the second guide rod 217, the second guide rod 217 penetrates the lug 213, the lug 213 is located outside the second guide rod 217 and slides, the processing table 101 is internally provided with the processing groove 110, the processing groove 110 is slidably connected with the storage plate 111, the processing groove 110 inner wall is fixed with two first guide rods 112, the first guide rod 112 penetrates the storage plate 111, the storage plate 111 is slidably fitted on the first guide rod 112, the processing table 101 bottom is fixed with two first ear plates 113, the two first ear plates 113 are rotatably connected with the lead screw 116, one of the first ear plates 113 side is installed with the first motor 114, the first motor 114 output end is fixed with the lead screw 116 one end, the storage plate 111 bottom is fixed with the connecting block 115, the lead screw 116 penetrates the connecting block 115 and is threadedly connected with the connecting block 115, the hollow column 103 outer side is fixed with the driven wheel 117, the vertical plate 102 is rotatably connected with the rotating shaft 118, the rotating shaft 118 one end is fixed with the driving wheel 119, the driving wheel 119 and the driven wheel 117 are rotatably connected through the belt 120, the vertical plate 102 one side is installed with the second motor 121, the rotating shaft 118 one end is fixed with the second motor 121 output end.

[0039] It should be noted that the annular sandpaper is sleeved on the main arc-shaped plate 106 and the auxiliary arc-shaped plate 107, and the rubber pad 109 is fixed on the outer side of the main arc-shaped plate 106 and the auxiliary arc-shaped plate 107, so that the friction between the main arc-shaped plate 106, the auxiliary arc-shaped plate 107 and the annular sandpaper is increased. When in use, the workpiece to be polished is installed on the storage plate 111, the second motor 121 is started to drive the rotating shaft 118 to rotate, the rotating shaft 118 drives the driving wheel 119 to rotate when rotating, the driving wheel 119 drives the driven wheel 117 to rotate through the belt 120 when rotating, the driven wheel 117 drives the hollow column 103 to rotate when rotating, the hollow column 103 drives the annular sandpaper on the outer side of the main arc-shaped plate 106 and the auxiliary arc-shaped plate 107 to rotate when rotating, then the first motor 114 is started to drive the lead screw 116 to rotate, the lead screw 116 drives the connecting block 115 to reciprocate when rotating, the connecting block 115 drives the storage plate 111 and the workpiece on the storage plate 111 to reciprocate when moving, so that the annular sandpaper polishes the workpiece.

[0040] In addition, the bottoms of the plurality of dust suction pipes 202 are fixedly connected and communicated with a communication pipe 203, two supports 209 are fixedly arranged at the bottom of the processing table 101, a connecting frame 210 is fixedly arranged between the two supports 209, a suction fan 204 is arranged on the connecting frame 210, a duct 205 is fixedly arranged on the air inlet of the suction fan 204 and communicated with the duct 205, the end of the duct 205 away from the suction fan 204 is fixedly connected and communicated with the communication pipe 203, a discharge pipe 206 is fixedly arranged on the air outlet of the suction fan 204, a dust collecting bag 207 is fixedly arranged on the end of the discharge pipe 206 away from the suction fan 204, and a dust discharge pipe 208 is fixedly arranged on the dust collecting bag 207.

[0041] It should be noted that when the workpiece is polished, the suction fan 204 is started, so that the dust after polishing is sucked into the dust cover 201, and then transported to the dust collecting bag 207 through the dust suction pipe 202, the communication pipe 203 and the discharge pipe 206. In addition, a pipe cap is threadedly connected to the dust discharge pipe 208, when it is necessary to clean the dust in the dust collecting bag 207, the pipe cap on the dust discharge pipe 208 is opened, and the dust in the dust collecting bag 207 can be poured out.

[0042] It is worth mentioning that the second motor 121, the first hydraulic cylinder 139, the suction fan 204, the first motor 114 and the second hydraulic cylinder 215 in the embodiment are conventional devices known to those skilled in the art and can be selected or customized according to actual needs. In the patent, we only use them and do not improve their structure and function. The setting method, installation method and electrical connection method can be debugged according to the requirements of the instruction manual for those skilled in the art, and will not be described here. The second motor 121, the first hydraulic cylinder 139, the suction fan 204, the first motor 114 and the second hydraulic cylinder 215 are provided with a control switch matched therewith. The installation position of the control switch can be selected according to the actual use requirement, and the operator can operate and control it.

[0043] In addition, the vertical plate 102 is fixedly provided with a U-shaped seat 138, the first hydraulic cylinder 139 is arranged on the inner wall of the U-shaped seat 138, the elongated end of the first hydraulic cylinder 139 is fixedly provided with a disc 140, the hollow column 103 is slidably connected with a cylindrical rod 122, the cylindrical rod 122 is rotatably connected with the disc 140, the inner walls of the two sides of the U-shaped seat 138 are both provided with a limiting groove 141, and the outer side of the disc 140 is fixedly provided with two limiting rods 142 which are slidably arranged in the corresponding limiting grooves 141.

[0044] Specifically, the control assembly comprises hollow plates 123 fixed on both sides of the rectangular plate 105, a moving plate 124 slidably connected in the hollow plates 123, a pulling plate 125 fixed on the side of the moving plate 124 away from the rectangular plate 105, a U-shaped plate 126 fixed on the inner wall of the secondary arc-shaped plate 107, the pulling plate 125 and the U-shaped plate 126 being rotationally connected, a recess 127 being formed in the hollow plate 123, a second hinge seat 130 being fixed on the side of the moving plate 124 extending into the recess 127, L-shaped plates 128 being fixed on both sides of the rectangular frame 104, a first hinge seat 129 being fixed on the side of the L-shaped plate 128 located in the recess 127, and the first hinge seat 129 and the second hinge seat 130 being rotationally connected with a first rotating rod 131.

[0045] Further, the driving assembly comprises a third hinge seat 135 fixed on one side of the rectangular plate 105, a plurality of fourth hinge seats 136 fixed on the outer side of the cylindrical rod 122 at equal intervals along the radial direction thereof, and a second rotating rod 137 rotationally connected between the third hinge seat 135 and the fourth hinge seat 136. The tool holder 132 is fixed on one of the L-shaped plates 128, and the blade 133 is fixed on one side of the tool holder 132. The notch 134 is formed in each of the primary arc-shaped plate 106 and the rubber pad 109, and the blade 133 can penetrate through the notch 134.

[0046] When the annular sandpaper needs to be replaced, the first hydraulic cylinder 139 is elongated to drive the disc 140 to move, the disc 140 drives the cylindrical rod 122 to move when moving, the cylindrical rod 122 drives the second rotating rod 137 to rotate when moving, the second rotating rod 137 drives the rectangular plate 105 to move towards the rectangular frame 104 when rotating, and the primary arc-shaped plate 106 is no longer taut with the annular sandpaper due to the movement of the rectangular plate 105 towards the hollow column 103, so that the annular sandpaper is loosened from the primary arc-shaped plate 106, facilitating replacement. When the rectangular plate 105 drives the primary arc-shaped plate 106 to move towards the hollow column 103, the movement of the rectangular plate 105 drives the hollow plate 123 to move, and the rectangular frame 104 and the L-shaped plate 128 are fixed, so that the L-shaped plate 128 drives the first rotating rod 131 to move when the hollow plate 123 moves, thereby driving the first rotating rod 131 to rotate, the first rotating rod 131 drives the moving plate 124 to move when rotating, thereby driving the moving plate 124 to move, the moving plate 124 drives the pulling plate 125 to move when moving, and the pulling plate 125 drives the secondary arc-shaped plate 107 to rotate towards the rectangular plate 105 when moving, so that the secondary arc-shaped plate 107 also rotates towards the rectangular plate 105 when the rectangular plate 105 drives the primary arc-shaped plate 106 to move, thereby avoiding the secondary arc-shaped plate 107 from blocking the movement of the primary arc-shaped plate 106 when the primary arc-shaped plate 106 moves towards the hollow column 103.

[0047] When the main arc-shaped plate 106 moves a distance, the blade 133 will overflow from the gap 134, at this time the user only needs to pull the loop sandpaper from the opposite direction of the blade 133, and the loop sandpaper can be cut off by the blade 133, so as to facilitate the loop sandpaper to be taken off, and then the loop sandpaper to be replaced is placed into the storage cylinder 214, at this time the second hydraulic cylinder 215 is elongated to drive the lug 213 and the storage cylinder 214 to move, so that the storage cylinder 214 moves to the outside of the main arc-shaped plate 106 and the secondary arc-shaped plate 107, and then the first hydraulic cylinder 139 is contracted to drive the cylindrical rod 122 to move away from the storage cylinder 214, at this time the cylindrical rod 122 moves to drive the second rotating rod 137 to rotate in the opposite direction, the second rotating rod 137 rotates to drive the rectangular plate 105 to move away from the hollow column 103, and then the rectangular plate 105 and the main arc-shaped plate 106 move to the inner wall of the storage cylinder 214, and the rectangular plate 105 moves to drive the first rotating rod 131 to rotate because the L-shaped plate 128 is fixed, and the first rotating rod 131 rotates to drive the moving plate 124 and the pulling plate 125 to move, and then the secondary arc-shaped plate 107 rotates away from the rectangular plate 105, when the limiting rod 142 and the inner wall on one side of the limiting groove 141 abut, the main arc-shaped plate 106 and the secondary arc-shaped plate 107 form a circular ring, at this time the rubber pad 109 on the outside of the main arc-shaped plate 106 and the secondary arc-shaped plate 107 and the inner wall of the loop sandpaper are attached, that is, the loop sandpaper is installed on the main arc-shaped plate 106 and the secondary arc-shaped plate 107, and it needs to be explained that when the main arc-shaped plate 106 and the secondary arc-shaped plate 107 form a circular ring, the blade 133 is located in the circular ring, that is, the blade 133 will not damage the loop sandpaper.

[0048] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, and modification of the above embodiments, which does not depart from the technical solution of the present application, are still within the scope of the present application.

Claims

1. An automatic sandpaper polishing machine with dust collection function, characterized in that, The utility model relates to a sanding machine, including: The utility model discloses a sanding machine, including: A dust collection unit (200) includes a plurality of dust collection hoods (201) distributed on the top of the processing table (101), and a plurality of dust collection pipes (202) are fixed in the processing table (101). The dust collection hood (201) is installed on the corresponding dust collection pipe (202).

2. The automatic sandpaper polishing machine with dust collection function according to claim 1, characterized in that, A plurality of the bottom of the dust collection pipe (202) is fixed and communicated with the communication pipe (203), the bottom of the processing table (101) is fixed with two supports (209), two supports (209) are fixed with a connecting frame (210), the connecting frame (210) is installed with an air extractor (204), the air extractor (204) is fixed and communicated with the air duct (205) on the air inlet, the air duct (205) is fixed and communicated with the communication pipe (203) away from the air extractor (204), the air extractor (204) is fixed and communicated with the discharge pipe (206) on the air outlet, the discharge pipe (206) is fixed and communicated with the dust bag (207) away from the air extractor (204), the dust bag (207) is fixed and communicated with the dust exhaust pipe (208).

3. The automatic sandpaper polishing machine with dust collection function according to claim 1, characterized in that, The extension plate (211) is fixed on one side of the processing table (101), the travel groove (212) is formed in the extension plate (211), the protrusion (213) is slidably connected in the travel groove (212), the protrusion (213) is attached to the inner walls on both sides of the travel groove (212), the receiving cylinder (214) is fixed on the top of the protrusion (213), the second ear plate (216) is fixed on the top of the extension plate (211), the second hydraulic cylinder (215) is installed on the second ear plate (216), the extension end of the second hydraulic cylinder (215) is fixed with the protrusion (213), the second guide rod (217) is fixed in the travel groove (212), the second guide rod (217) penetrates the protrusion (213), and the protrusion (213) slides on the outer side of the second guide rod (217).

4. The automatic sandpaper polishing machine with dust collection function according to claim 1, characterized in that, The processing groove (110) is formed in the processing table (101), the storage plate (111) is slidably connected in the processing groove (110), the first guide rod (112) is fixed on the inner wall of the processing groove (110), the first guide rod (112) penetrates the storage plate (111), and the storage plate (111) is slidably connected with the first guide rod (112).

5. The automatic sandpaper polishing machine with dust collection function according to claim 4, characterized in that, The first ear plate (113) is fixed on the bottom of the processing table (101), the lead screw (116) is rotatably connected between the two first ear plates (113), the first motor (114) is installed on one side of one of the first ear plates (113), the output end of the first motor (114) is fixed with one end of the lead screw (116), the connecting block (115) is fixed on the bottom of the storage plate (111), the lead screw (116) penetrates the connecting block (115) and is threadedly connected with the connecting block (115).

6. The automatic sandpaper polishing machine with dust collection function according to claim 1, characterized in that, The driven wheel (117) is fixed on the outer side of the hollow column (103), the rotating shaft (118) is rotatably connected in the vertical plate (102), the driving wheel (119) is fixed on one end of the rotating shaft (118), and the driving wheel (119) and the driven wheel (117) are rotatably connected through the belt (120), the second motor (121) is installed on one side of the vertical plate (102), and one end of the rotating shaft (118) is fixed with the output end of the second motor (121).

7. The automatic sandpaper polishing machine with dust collection function according to claim 1, characterized in that, The driving assembly comprises a third hinge seat (135) fixed on one side of the rectangular plate (105), a plurality of fourth hinge seats (136) are fixed on the outer side of the cylindrical rod (122) at equal intervals along the radial direction, and the third hinge seat (135) and the fourth hinge seat (136) are jointly connected with the second rotating rod (137) in a rotating mode.

8. The automatic sandpaper polishing machine with dust collection function according to claim 7, characterized in that, One of the L-shaped plates (128) is fixed with a tool holder (132), one side of the tool holder (132) is fixed with a blade (133), and one of the main arc-shaped plates (106) and the rubber pad (109) are provided with a notch (134), and the blade (133) can penetrate through the notch (134).

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