Automatic burr treatment device for mechanical part machining

Abstract

The invention relates to the technical field of grinding, in particular to an automatic burr treatment device for mechanical part machining, which comprises a shell, a transmission belt and a support rod assembly, the transmission belt can perform circumferential transmission, the transmission belt is arranged on the shell, and one end of the transmission belt is positioned in the shell. A transmission belt and a supporting rod assembly are arranged, during grinding, a worker moves the device, then the position of a grab handle is adaptively adjusted, a supporting plate is kept in surface contact with a grinding face through the transmission belt, then the transmission belt is started, the transmission belt conducts circumferential transmission, and grinding abrasive paper synchronously moves relative to the grinding face along with the transmission belt; compared with an existing grinding device, under the action of the supporting rod assembly, the grinding abrasive paper pasted on the transmission belt can always keep surface contact with the two grinding faces, the grinding area is larger, and the burr removing efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding, and particularly relates to an automatic burr treatment device for machining mechanical parts. Background Art

[0002] When mechanical parts are produced by the casting process, liquid metal is poured into a casting cavity adapted to the shape of the part. After it cools and solidifies, the part or blank can be obtained. During the casting process, the metal is melted into a liquid meeting certain requirements and poured into the mold. After cooling and solidifying and finishing treatment, mechanical parts with a predetermined shape, size and performance are obtained.

[0003] The surface of the cast mechanical parts is rough. Therefore, before use, grinding treatment is required to remove surface burrs and improve the surface smoothness. For some special-shaped mechanical parts, such as when grinding a lost foam mold with two assembly surfaces arranged at an angle, at this time, only an electric grinder can be used to grind the assembly surfaces. When grinding, the cylindrical grinding rod of the electric grinder is in line contact with the assembly surface, and the two assembly surfaces cannot be ground simultaneously. Therefore, the grinding efficiency is low. Summary of the Invention

[0004] Based on this, in view of the problems existing in the current grinding equipment, it is necessary to provide an automatic burr treatment device for machining mechanical parts to solve the problem of low grinding efficiency of the existing grinding equipment.

[0005] The above object is achieved by the following technical solutions: An automatic burr treatment device for machining mechanical parts includes: A housing; A transmission belt that can be driven circumferentially. The transmission belt is arranged on the housing. One end of the transmission belt is located inside the housing, and the other end of the transmission belt passes out from one side of the housing; A grinding sandpaper that is attached to the outer side surface of the transmission belt; A strut assembly is arranged within the annular contour formed by the transmission belt. The strut assembly includes a first rod, a second rod, a third rod and a fourth rod. The first rod, the second rod, the third rod and the fourth rod are successively hinged end to end by connecting pins to form a quadrilateral structure. The first hinge point and the third hinge point of the quadrilateral structure are in diagonal positions, and the second hinge point and the fourth hinge point are in diagonal positions. A handle for driving the first hinge point to approach the third hinge point is connected to the connecting pin corresponding to the first hinge point. Hinge seats are hinged to both the second hinge point and the fourth hinge point. The hinge seats can rotate around their hinge axes. A support plate is also hinged to the hinge seats. The support plate can rotate around its hinge axis. The hinge axis of the support plate is perpendicular to the hinge axis of the hinge seat. The outer side surface of the support plate is in surface contact with the inner side surface of the transmission belt; When in the working state, the position between the third hinge point and the housing is fixed.

[0006] In one embodiment, a second auxiliary rod is provided at one end of the second rod biased towards the third hinge point, and a third auxiliary rod is provided at one end of the third rod biased towards the third hinge point. The second auxiliary rod and the third auxiliary rod have the same length. The second auxiliary rod and the second rod are on the same straight line, and the third auxiliary rod and the third rod are on the same straight line. A first support wheel is rotatably provided at one end of the second auxiliary rod away from the third hinge point, and a second support wheel is rotatably provided at one end of the third auxiliary rod away from the third hinge point. Both the first support wheel and the second support wheel are in surface contact with the inner side surface of the transmission belt.

[0007] In one embodiment, an adjustment assembly is provided on the connecting pin corresponding to the third hinge point. The adjustment assembly is used to drive the connecting pin corresponding to the third hinge point to move along the length directions of the second rod and the third rod.

[0008] In one embodiment, the adjustment assembly includes a slot, a block, a button, a compression spring, and a limit ring. There are two blocks, and the two blocks are spaced apart on the connecting pin corresponding to the third hinge point. The block can move synchronously with the connecting pin along the axis of the connecting pin, and the block can rotate relative to the connecting pin around the axis of the connecting pin. Slots are provided in the length extension directions of the second rod and the third rod. A plurality of notches are equally spaced along the length direction on the inner side surface of the slot, and the notches and the blocks can be engaged with each other. The button is provided at one end of the connecting pin close to the second rod, the limit ring is sleeved on one end of the connecting pin close to the button, an installation groove is provided at the upper end of the limit ring, the installation groove is adapted to the outer dimension of the button, and the compression spring is located in the installation groove and sleeved on the connecting pin.

[0009] In one embodiment, the hinge seat is biased towards the side of the support plate close to the third hinge point.

[0010] In one embodiment, a power roller is rotatably provided in the housing. The power roller is in transmission connection with the transmission belt, and the power roller can rotate around its axis.

[0011] In one embodiment, a telescopic support frame is provided between the housing and the connecting pin corresponding to the third hinge point. One end of the telescopic support frame is provided on the housing, and the other end of the telescopic support frame is hinged to the connecting pin corresponding to the third hinge point.

[0012] In one embodiment, a sliding support frame is slidably connected to the housing. A tensioning roller is rotatably provided at the lower part of the sliding support frame, and the tensioning roller is in transmission connection with the transmission belt.

[0013] In one embodiment, a polishing sandpaper is pasted on the outside of the transmission belt, and the outer dimension of the polishing sandpaper is adapted to the outer dimension of the transmission belt.

[0014] In one embodiment, an extension bracket is provided at the lower part of the housing.

[0015] The beneficial effects of the present invention are as follows: The present invention is provided with a transmission belt and a support rod assembly. During grinding, the operator moves the device and then adaptively adjusts the position of the handle so that the support plate maintains surface contact with the grinding surface through the transmission belt. Next, the transmission belt is started, causing the transmission belt to rotate circumferentially, and the grinding sandpaper moves synchronously relative to the grinding surface along with the transmission belt, thereby achieving the grinding of two grinding surfaces arranged at an angle and removing the burrs on the grinding surface. Compared with the existing grinding devices, under the action of the support rod assembly, the grinding sandpaper adhered to the transmission belt can always maintain surface contact with the two grinding surfaces, with a larger grinding area and higher burr removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall schematic diagram of an automated burr treatment device for machining mechanical parts according to the present invention; Figure 2 is a front view of an automated burr treatment device for machining mechanical parts according to the present invention; Figure 3 is Figure 2 the A-A half-sectional axonometric view in Figure 4 is a top view of an automated burr treatment device for machining mechanical parts according to the present invention; Figure 5 is Figure 4 the B-B cross-sectional view in Figure 6 is a first usage state schematic diagram of an automated burr treatment device for machining mechanical parts according to the present invention; Figure 7 is a schematic diagram of an adjustment assembly in an automated burr treatment device for machining mechanical parts according to the present invention; Figure 8 is a second usage state schematic diagram of an automated burr treatment device for machining mechanical parts according to the present invention; Figure 9 is a schematic diagram of a chuck structure in an automated burr treatment device for machining mechanical parts according to the present invention.

[0017] Figure 10 is Figure 9 the C-C cross-sectional view in

[0018] Wherein: 100. Outer shell; 110. Power roller; 120. Telescopic support frame; 121. Guide chute; 130. Sliding support frame; 131. Tension spring; 140. Tensioning roller; 150. Extension frame; 200. Transmission belt; 300. Support rod assembly; 310. First rod; 320. Second rod; 321. Second sub-rod; 322. First support wheel; 330. Third rod; 331. Third sub-rod; 332. Second support wheel; 340. Fourth rod; 350. Connecting pin; 351. First hinge point; 352. Second hinge point; 353. Third hinge point; 354. Fourth hinge point; 360. Handle; 370. Hinge seat; 380. Support plate; 400. Adjustment assembly; 410. Card slot; 411. Bayonet; 420. Block; 4201. Block body; 4202. Block support arm; 430. Button; 440. Compression spring; 450. Limit ring; 451. Installation groove; 500. Casting; 510. Polishing surface; 6. Bolt; 7. Nut. Detailed implementation manner

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The serial numbers assigned to the components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0022] As shown Figures 1 - 10 in the figure, an automatic burr treatment device for machining mechanical parts includes a housing 100, a transmission belt 200 and a support rod assembly 300. The transmission belt 200 can be circumferentially driven. The transmission belt 200 is arranged on the housing 100. One end of the transmission belt 200 is located inside the housing 100, and the other end of the transmission belt 200 passes out from one side of the housing 100. The support rod assembly 300 is arranged within the annular contour formed by the surrounding of the transmission belt 200. The support rod assembly 300 is used to support the transmission belt 200 so that the transmission belt 200 maintains a tensioned state, facilitating the stable circumferential drive of the transmission belt 200. The support rod assembly 300 includes a first rod 310, a second rod 320, a third rod 330 and a fourth rod 340. The first rod 310, the second rod 320, the third rod 330 and the fourth rod 340 are successively hinged end to end by connecting pins 350 to form a quadrilateral structure. The first hinge point 351 and the third hinge point 353 of the quadrilateral structure are in diagonal positions. The first hinge point 351 is located near the housing 100, and the third hinge point 353 is located far from the housing 100. The second hinge point 352 and the fourth hinge point 354 are in diagonal positions. The second hinge point 352 and the fourth hinge point 354 are located on the front and back sides of the housing 100. A handle 360 for driving the first hinge point 351 to approach the third hinge point 353 is connected to the connecting pin 350 corresponding to the first hinge point 351. Hinge seats 370 are hinged on both the second hinge point 352 and the fourth hinge point 354. The hinge seats 370 can rotate around their hinge axes. A support plate 380 is also hinged on the hinge seats 370. The support plate 380 can rotate around its hinge axis. The hinge axis of the hinge seat 370 is perpendicular to the hinge axis of the support plate 380. The outer side surface of the support plate 380 is in surface contact with the inner side surface of the transmission belt 200. When in the working state, the position between the third hinge point 353 and the housing 100 is fixed.

[0023] It should also be supplemented that, as Figure 1 shown in the figure, a telescopic support frame 120 is arranged between the housing 100 and the connecting pin 350 corresponding to the third hinge point 353. One end of the telescopic support frame 120 is arranged on the housing 100, and the other end of the telescopic support frame 120 is hinged on the connecting pin 350 corresponding to the third hinge point 353, so that the position between the third hinge point 353 and the housing 100 is fixed when in the working state.

[0024] It should also be supplemented that abrasive papers are pasted on the outside of the transmission belt 200. The outer dimensions of the abrasive papers are adapted to the outer dimensions of the transmission belt 200. When the abrasive papers are scrapped, the staff can tear off the abrasive papers and paste new abrasive papers on the outside of the transmission belt 200.

[0025] As Figure 6As shown, when the casting 500 with two grinding surfaces 510 arranged at an angle needs to be ground, after the device moves to the middle area between the two grinding surfaces 510 of the conveyor belt 200, the worker first fixes the housing 100 with one hand, and then holds the handle 360 with the other hand. By driving the connecting pin 350 corresponding to the first hinge point 351 through the handle 360 to move towards the direction close to the third hinge point 353, the distance between the two support plates 380 gradually increases at this time. The two support plates 380 push the conveyor belt 200 to move and gradually contact the grinding surface 510. After the lower end of the support plate 380 indirectly contacts the grinding surface 510 through the conveyor belt 200, as the distance between the two support plates 380 continues to increase, the two support plates 380 gradually rotate around the hinge seat 370 until both the upper and lower ends of the support plate 380 are in surface contact with the grinding surface 510 through the conveyor belt 200. At this time, the conveyor belt 200 is in surface contact with the grinding surface 510. Next, start the conveyor belt 200 to make the conveyor belt 200 drive circumferentially, and the abrasive paper follows the conveyor belt 200 to move synchronously relative to the grinding surface 510, so as to realize the grinding of the two grinding surfaces 510 arranged at an angle and remove the burrs on the grinding surface 510. After the burrs in the current area of the grinding surface 510 are removed, move this device, and then adaptively adjust the position of the handle 360 so that the support plate 380 maintains surface contact with the grinding surface 510 through the conveyor belt 200. At this time, the conveyor belt 200 moves in the height direction, and the contact area between the abrasive paper and the grinding surface 510 changes, so as to realize the grinding of other areas of the grinding surface 510. Compared with the existing grinding device, under the action of the strut assembly 300, the abrasive paper pasted on the conveyor belt 200 can always maintain surface contact with the two grinding surfaces 510, the grinding area is larger, and the burr removal efficiency is higher.

[0026] In a further embodiment, as Figure 3 shown, a second sub-bar 321 is provided at one end of the second bar 320 that is biased towards the third hinge point 353, and a third sub-bar 331 is provided at one end of the third bar 330 that is biased towards the third hinge point 353. The second sub-bar 321 and the third sub-bar 331 have the same length. The second sub-bar 321 and the second bar 320 are located on the same straight line, the third sub-bar 331 and the third bar 330 are located on the same straight line. A first support wheel 322 is rotatably provided at one end of the second sub-bar 321 away from the third hinge point 353, and a second support wheel 332 is rotatably provided at one end of the third sub-bar 331 away from the third hinge point 353. Both the first support wheel 322 and the second support wheel 332 maintain surface contact with the inner surface of the conveyor belt 200.

[0027] The abrasive belt between the first support wheel 322 and the second support wheel 332 is used to grind some narrow areas. During use, the abrasive belt pasted in this area is also kept in surface contact with the grinding surface 510. Under the circumferential driving action of the transmission belt 200, through the relative movement of the abrasive belt and the grinding surface 510, the grinding of the grinding surface 510 is achieved. If the size area of the transmission belt 200 between the current first support wheel 322 and the second support wheel 332 does not match the area of the grinding surface 510 to be ground, similarly, the operator can move the grip 360 to change the angle between the third auxiliary rod 331 and the second auxiliary rod 321, so as to change the area of the transmission belt 200 between the first support wheel 322 and the second support wheel 332, and adjust it to make the size area of the transmission belt 200 between the current first support wheel 322 and the second support wheel 332 match the area of the grinding surface to be ground.

[0028] In a further embodiment, for some special-shaped castings 500, when the grinding surface 510 to be deburred is located inside the casting 500 (for example, the grinding surface shown as Figure 8 the grinding surface 510, and this grinding surface 510 is inclined inside the casting 500), the existing grinding device is not convenient to extend into the casting 500 for grinding. To solve this problem, as shown in Figure 3 and Figure 8 shown, an adjustment assembly 400 is provided on the connecting pin 350 corresponding to the third hinge point 353, and the adjustment assembly 400 is used to drive the connecting pin 350 corresponding to the third hinge point 353 to move along the length directions of the second rod 320 and the third rod 330.

[0029] During grinding, the operator first makes the first support wheel 322 and the second support wheel 332 extend into the casting 500, and then drives the connecting pin 350 corresponding to the third hinge point 353 to move along the length directions of the second rod 320 and the third rod 330 through the adjustment assembly 400 until the angle between the third auxiliary rod 331 and the second auxiliary rod 321 increases to make the abrasive belt on the transmission belt 200 keep surface contact with the grinding surface 510. At this time, the transmission belt 200 is started, and the transmission belt 200 drives the abrasive belt to rotate circumferentially. At this time, the abrasive belt and the grinding surface 510 move relatively to achieve the grinding of the grinding surface 510 and remove the burrs on the grinding surface 510.

[0030] In a further embodiment, as shown in Figure 6 、 Figure 7 and Figure 9As shown in the figure, the adjustment component 400 includes a card slot 410, a clamping block 420, a button 430, a compression spring 440, and a limiting ring 450. There are two clamping blocks 420, which are arranged at intervals on the connecting pin 350 corresponding to the third hinge point 353. The clamping block 420 can move synchronously with the connecting pin 350 along the axis of the connecting pin 350, and the clamping block 420 can rotate relative to the connecting pin 350 around the axis of the connecting pin 350. Specifically, a limiting ring 450 is coaxially arranged on the outer peripheral wall of the connecting pin 350 at a position corresponding to the clamping block 420. A rotating hole is opened in the center of the clamping block 420, and a limiting ring groove is coaxially opened on the hole wall of the rotating hole. The limiting ring 450 is rotatably connected in the limiting ring groove. The card slot 410 is opened on the second rod 320 and the third rod 330 and extends along the length directions of the second rod 320 and the third rod 330. A plurality of bayonets 411 are equidistantly opened on the inner side surface of the card slot 410 along its length direction. The bayonets 411 can be engaged with the clamping block 420. The button 430 is arranged at one end of the connecting pin 350 close to the third rod 330. The limiting ring 450 is sleeved on one end of the connecting pin 350 close to the button 430. An installation groove 451 is opened at the upper end of the limiting ring 450. The installation groove 451 is adapted to the external dimension of the button 430. The compression spring 440 is located in the installation groove 451 and is sleeved on the connecting pin 350.

[0031] When it is necessary to move the connecting pin 350 corresponding to the third hinge point 353 along the length directions of the second rod 320 and the third rod 330, the staff presses the button 430 downward. At this time, the button 430 drives the connecting pin 350 to move downward until the clamping block 420 is disengaged from the clamping connection with the card slot 410. At this time, the hinge point position between the second rod 320 and the third rod 330 is adjustable. Then, adjust the included angle between the second rod 320 and the third rod 330 and the hinge point position between the second rod 320 and the third rod 330 until the angle between the second rod 320 and the third rod 330 increases to make the abrasive belt on the transmission belt 200 in surface contact with the grinding surface 510. Finally, move the connecting pin 350 so that the connecting pin 350 moves along the straight line where the card slot 410 is located in a direction away from the first support wheel 322 and the second support wheel 332. After the connecting pin 350 moves to the hinge point position between the second rod 320 and the third rod 330, then release the button 430. Under the elastic force of the compression spring 440, the connecting pin 350 drives the clamping block 420 to move upward until the clamping block 420 is engaged with the corresponding bayonet 411 on the card slot 410. Finally, start the transmission belt 200, and at the same time, the staff holds the handle 360 and moves it in a direction close to the third hinge point 353 to make the transmission belt 200 in surface contact with the grinding surface 510 with a certain pressure. At this time, under the driving action of the transmission belt 200, the abrasive belt and the grinding surface 510 move relative to each other, so as to grind and deburr the grinding surface 510 through the abrasive belt.

[0032] In a further embodiment, such asFigure 6 As shown, the hinge seat 370 is biased towards the side of the support plate 380 close to the third hinge point 353. Such a setting is to enable the third auxiliary rod 331 to rotate to be close to perpendicular to the telescopic support frame 120, so that a polishing surface 510 close to horizontal can be polished.

[0033] In a further embodiment, as Figure 3 shown, a power roller 110 is rotatably arranged in the housing 100. The power roller 110 is in driving connection with the transmission belt 200. The power roller 110 can rotate around its axis. A power source is arranged in the housing 100. The output end of the power source is fixedly connected to the power roller 110. Thus, the power roller 110 is driven to rotate by the power source, and then the transmission belt 200 is driven to perform circumferential transmission by the rotation of the power roller 110.

[0034] In a further embodiment, as Figure 1 and Figure 3 shown, a sliding support frame 130 is slidably connected to the housing 100. The housing 100 and the sliding support frame 130 are connected by a tension spring 131. A tensioning roller 140 is rotatably arranged at the lower part of the sliding support frame 130. The tensioning roller 140 is in driving connection with the transmission belt 200. The tensioning roller 140 is provided to tension and support the transmission belt 200 so that the transmission belt 200 remains in a tensioned state.

[0035] It should also be added that in order to prevent the handle 360 from interfering with the telescopic support frame 120 when driving the connection pin 350 corresponding to the first hinge point 351 to move, specifically, a guiding chute 121 is formed on the telescopic support frame 120, and the connection pin 350 corresponding to the first hinge point 351 is slidably connected in the guiding chute 121.

[0036] In a further embodiment, as Figure 5 shown, an extension frame 150 is arranged at the lower part of the housing 100. The extension frame 150 is provided to facilitate the staff to fix the housing 100 so as to hold the housing 100.

[0037] In a further embodiment, the clamping block 420 includes a clamping block body 4201 and two clamping block arms 4202. The clamping block arms 4202 are symmetrically distributed along the circumference of the clamping block body 4201. The clamping block body 4201 and the two clamping block arms 4202 are connected by bolts 6 and nuts 7, and the rotation angle of the clamping block arms 4202 relative to the clamping block body 4201 can be adjusted by the bolts 6 and nuts 7. Thus, when the angles of the second rod 320 and the third rod 330 change, the clamping block arms 4202 can still be clamped into the bayonet 411 of the clamping slot 410. If the clamping block arms 4202 are not closely attached when being clamped into the bayonet 411 of the clamping slot 410, the bolts 6 and nuts 7 can be manually fine-tuned.

[0038] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0039] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. An automatic burr treatment device for machining mechanical parts, characterized in that, Comprising: A housing; A drive belt capable of circumferential transmission, the drive belt is arranged on the housing, one end of the drive belt is located inside the housing, and the other end of the drive belt passes out from one side of the housing; A polishing sandpaper attached to the outer side surface of the drive belt; A strut assembly arranged within the annular contour formed by the drive belt surrounding it. The strut assembly includes a first rod, a second rod, a third rod, and a fourth rod. The first rod, the second rod, the third rod, and the fourth rod are successively hinged end to end by connecting pins to form a quadrilateral structure. The first hinge point and the third hinge point of the quadrilateral structure are in diagonal positions, and the second hinge point and the fourth hinge point are in diagonal positions. A handle for driving the first hinge point to approach the third hinge point is connected to the connecting pin corresponding to the first hinge point. Hinge seats are hinged to both the second hinge point and the fourth hinge point. The hinge seats can rotate around the hinge axis of the hinge seats. A support plate is also hinged to the hinge seats. The support plate can rotate around the hinge axis of the support plate. The hinge axis of the support plate is perpendicular to the hinge axis of the hinge seat. The outer side surface of the support plate is in surface contact with the inner side surface of the drive belt; When in the working state, the position between the third hinge point and the housing is fixed.

2. The automatic burr treatment device for machining mechanical parts according to claim 1, characterized in that, A second sub-rod is arranged at one end of the second rod biased towards the third hinge point, and a third sub-rod is arranged at one end of the third rod biased towards the third hinge point. The second sub-rod and the third sub-rod have the same length. The second sub-rod and the second rod are on the same straight line, and the third sub-rod and the third rod are on the same straight line; A first support wheel is rotatably arranged at one end of the second sub-rod away from the third hinge point, and a second support wheel is rotatably arranged at one end of the third sub-rod away from the third hinge point. Both the first support wheel and the second support wheel are in surface contact with the inner side surface of the drive belt.

3. The automated burr treatment device for machining mechanical parts according to claim 2, characterized in that, An adjustment assembly is arranged on the connecting pin corresponding to the third hinge point. The adjustment assembly is used to drive the connecting pin corresponding to the third hinge point to move along the length directions of the second rod and the third rod.

4. An automated burr treatment device for machining mechanical parts according to claim 3, characterized in that, The adjustment assembly includes a card slot, a card block, a button, a compression spring, and a limit ring. There are two card blocks, and the two card blocks are arranged at intervals on the connecting pin corresponding to the third hinge point. The card block can move synchronously with the connecting pin along the axis of the connecting pin, and the card block can rotate relative to the connecting pin around the axis of the connecting pin. Card slots are opened in the length extension directions of the second rod and the third rod. A plurality of notches are equally spaced along the length direction on the inner side surface of the card slot. The notches and the card block can be mutually engaged. The button is arranged at one end of the connecting pin close to the second rod. The limit ring is sleeved on one end of the connecting pin close to the button. An installation groove is opened at the upper end of the limit ring, and the installation groove is adapted to the outer dimension of the button. The compression spring is located in the installation groove and sleeved on the connecting pin; The card block includes a card block body and two card block arms. The card block arms are symmetrically distributed along the circumference of the card block body. The card block body and the two card block arms are connected by bolts and nuts, and the rotation angle of the card block arms relative to the card block body can be adjusted by the bolts and nuts. Thus, when the angles of the second rod and the third rod change, the card block arms can still be inserted into the notches of the card slot.

5. An automated burr treatment device for machining mechanical parts according to claim 1, characterized in that, The hinge seat is biased towards the side of the support plate close to the third hinge point.

6. An automatic burr processing device for machining mechanical parts according to claim 1, characterized in that, A power roller is rotatably arranged inside the housing. The power roller is in transmission connection with the transmission belt, and the power roller can rotate around its axis.

7. An automated burr processing device for machining mechanical parts according to claim 1, characterized in that, A telescopic support frame is arranged between the housing and the connecting pin corresponding to the third hinge point. One end of the telescopic support frame is arranged on the housing, and the other end of the telescopic support frame is hinged to the connecting pin corresponding to the third hinge point.

8. An automated burr processing device for machining mechanical parts according to claim 1, characterized in that, A sliding support frame is slidably connected to the housing. A tensioning roller is rotatably arranged at the lower part of the sliding support frame. The tensioning roller is in transmission connection with the transmission belt.

9. An automated burr processing device for machining mechanical parts according to claim 1, characterized in that, A polishing sandpaper is pasted on the outside of the transmission belt. The outer dimension of the polishing sandpaper is adapted to the outer dimension of the transmission belt.

10. An automated burr treatment device for machining mechanical parts according to claim 1, characterized in that, An extension frame is arranged at the lower part of the housing.

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