A belt sander with a swing arm

Abstract

The utility model discloses a sand belt swing polisher, it includes frame and sand belt polishing device. Sand belt polishing device includes seat subassembly, main wheel seat, main wheel, main wheel drive motor, vice wheel seat, vice wheel and vice wheel swing mechanism, seat subassembly sets up in frame, main wheel seat sets up in seat subassembly, main wheel pivoted sets up in main wheel seat, vice wheel seat pivoted sets up in seat subassembly, vice wheel pivoted sets up in vice wheel seat, and main wheel and vice wheel are used for tensioning sand belt, and main wheel drive motor is used for driving main wheel rotation, and vice wheel swing mechanism sets up in seat subassembly, and vice wheel swing mechanism includes swing motor subassembly and swing linkage mechanism, and swing linkage mechanism connects swing motor subassembly's output shaft and vice wheel seat, and swing linkage mechanism is used for when the output shaft of swing motor subassembly rotates, and linkage vice wheel seat continues positive and negative back and forth rotation. The sand belt swing polisher, through vice wheel's positive and negative back and forth rotation, realizes sand belt reciprocating movement along the width direction, and the equipment cost is low.

Description

Technical Field

[0001] This utility model relates to grinding equipment, and more particularly to a belt swing grinder. Background Technology

[0002] Existing belt sanders typically require the abrasive belt to move horizontally along its width relative to the workpiece during sanding. This allows for efficient sanding of different areas of the belt, preventing concentrated wear and improving overall sanding quality. To achieve this, current technology usually mounts the entire belt sanding unit on a translation drive assembly, which then drives the entire unit in reciprocating motion. However, this structure results in high costs due to the significant weight of the entire belt sanding unit and the high demands on the strength and power of the translation drive assembly. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a belt oscillating grinder, which achieves the reciprocating movement of the sanding belt along its width direction through the forward and reverse rotation of the auxiliary wheel, resulting in low equipment cost.

[0004] A belt sander according to an embodiment of the present invention includes a base and a belt sanding device. The belt sanding device includes a base assembly, a main wheel base, a main wheel, a main wheel drive motor, a secondary wheel base, a secondary wheel, and a secondary wheel swing mechanism. The base assembly is disposed on the base, the main wheel base is disposed on the base assembly, the main wheel is pivotally disposed on the main wheel base, the secondary wheel base is pivotally disposed on the base assembly, and the secondary wheel is pivotally disposed on the secondary wheel base. The rotation axis of the secondary wheel base is perpendicular to the axis of the main wheel and the axis of the secondary wheel. The main wheel and the secondary wheel are used to tension the sanding belt. The main wheel drive motor is configured to drive the main wheel to rotate. The secondary wheel swing mechanism is disposed on the base assembly. The secondary wheel swing mechanism includes a swing motor assembly and a swing linkage mechanism. The swing linkage mechanism connects the output shaft of the swing motor assembly and the secondary wheel base. The swing linkage mechanism is used to continuously rotate the secondary wheel base back and forth when the output shaft of the swing motor assembly rotates.

[0005] According to an embodiment of this utility model, a belt sander with oscillating motion has at least the following beneficial effects: During sanding, the output shaft of the oscillating motor assembly outputs power, which drives the auxiliary wheel seat to rotate back and forth through the oscillating linkage mechanism. This causes the angular position of the auxiliary wheel relative to the main wheel to continuously change, and the sanding belt, driven by an unbalanced tension force, reciprocates along its width. Because the reciprocating movement of the sanding belt in the width direction is achieved by continuously rotating the auxiliary wheel, the entire belt sanding device does not need to be driven, reducing the strength requirements of components and the output requirements of the driver, thereby reducing costs.

[0006] According to some embodiments of the present invention, the swing linkage mechanism includes a transmission arm and a transmission wheel. One end of the transmission arm is fixed at a position offset from the pivot axis of the auxiliary wheel seat. The other end of the transmission arm is provided with a transmission groove. The transmission wheel is connected to the output shaft of the swing motor assembly. The axis of the transmission wheel does not coincide with the axis of the output shaft. The transmission wheel is disposed in the transmission groove and slides in cooperation with the two opposite sidewalls of the transmission groove.

[0007] According to some embodiments of this utility model, the transmission wheel is a roller structure.

[0008] According to some embodiments of the present invention, the seat assembly includes a main seat and a rotation adjustment seat. The main wheel seat, the main wheel, the main wheel drive motor, the auxiliary wheel seat, the auxiliary wheel, and the auxiliary wheel swing mechanism are all disposed on the rotation adjustment seat. The rotation adjustment seat is disposed on the main seat and can be adjusted angularly relative to the main seat along the circumferential direction of the horizontal axis.

[0009] According to some embodiments of this utility model, the center position of the rotating adjustment seat is pivotally connected to the main body and the pivot axis is horizontally set. The rotating adjustment seat has multiple arc-shaped holes arranged circumferentially around the pivot axis of the rotating adjustment seat. The center of the extension trajectory of the arc-shaped holes coincides with the pivot axis of the rotating adjustment seat. The main body is provided with fastening screw holes corresponding to the arc-shaped holes one by one. Fastening screws are inserted through the arc-shaped holes and are threadedly connected to the fastening screw holes to fasten the rotating adjustment seat to the main body. The main body is provided with two adjusting screw seats, which are arranged vertically and respectively correspond to the upper and lower parts of the rotating adjustment seat. Adjusting screws are threadedly connected to the adjusting screw seats, and the ends of the adjusting screws are used to abut against the side end face of the rotating adjustment seat.

[0010] According to some embodiments of this utility model, the base is provided with a feeding device for feeding in the workpiece to be polished. The main wheel is arranged opposite to the feeding device. The base assembly is provided with a mobile drive platform. The main wheel seat, the main wheel, the main wheel drive motor, the auxiliary wheel seat, the auxiliary wheel, and the auxiliary wheel swing mechanism are all arranged on the mobile drive platform. The mobile drive platform is used to drive the main wheel seat, the main wheel, the main wheel drive motor, the auxiliary wheel seat, the auxiliary wheel, and the auxiliary wheel swing mechanism to move closer to and further away from the feeding device.

[0011] According to some embodiments of the present invention, the main wheel is mounted on the main wheel shaft, the main wheel seat includes a main shaft seat and a shaft support structure, one end of the main wheel shaft is mounted on the main shaft seat, and the other end of the main wheel shaft is mounted on the shaft support structure. The shaft support structure is detachably disposed relative to the main wheel shaft and can make way for the main wheel in the axial direction of the main wheel shaft after being detached relative to the main wheel shaft.

[0012] According to some embodiments of this utility model, the main wheel seat includes an extension arm that spans the upper side of the main wheel. One end of the extension arm is connected to the main shaft seat, and the shaft support structure is disposed at the other end of the extension arm. The shaft support structure includes a first arm, a second arm, a support bearing, and a locking / unlocking mechanism. The upper ends of the first arm and the second arm are pivotally connected to the extension arm. The first arm and the second arm have arc-shaped grooves on the lower side of their respective pivot axes. The arc-shaped grooves of the first arm and the second arm are used to enclose and form a bearing hole. The support bearing is disposed in the bearing hole. The other end of the main wheel shaft is mounted on the support bearing. The locking / unlocking mechanism is disposed at the lower ends of the first arm and the second arm and is used to lock the relative position of the lower ends of the first arm and the second arm and to unlock and allow the lower ends of the first arm and the second arm to move freely.

[0013] According to some embodiments of the present invention, the base is provided with a feeding device, which is a belt conveyor. Multiple belt sanding devices are provided and arranged along the belt conveyor. The main wheel is arranged opposite to the conveying surface of the belt conveyor. The belt sanding oscillating sander also includes a polishing device. The polishing device is provided with a polishing wheel, which is arranged opposite to the conveying surface of the belt conveyor. The polishing device is located on one side of the belt sanding devices along their queuing direction.

[0014] According to some embodiments of the present invention, the base is provided with a dust collection water tank, the dust collection water tank has a groove on the groove, the feeding device, each of the belt sanding devices and the polishing device are all located on the upper side of the dust collection water tank; the outer side of the main wheel and the auxiliary wheel of each belt sanding device and the outer side of the polishing wheel are all fitted with a cover, and the lower end of the cover is opened.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a perspective view of an embodiment of the present invention after the cover has been removed; Figure 3 This is a perspective view of the belt sanding device according to an embodiment of the present invention; Figure 4 This is a partial structural diagram of the belt sanding device according to an embodiment of the present invention; Figure 5 for Figure 3 A schematic diagram of the structure shown from another perspective; Figure 6 for Figure 5 An exploded view of the structure shown. Figure 7 for Figure 5 Enlarged view of point A; Figure 8 for Figure 3 A partially enlarged schematic diagram of the structure shown.

[0017] Figure label: Base 100; A belt sander 200, a seat assembly 210, a main wheel seat 220, a main wheel 230, a main wheel drive motor 240, a secondary wheel seat 250, a secondary wheel 260, a secondary wheel swing mechanism 270, a swing motor assembly 271, a swing linkage mechanism 272, an output shaft 2711, a transmission arm 2721, a transmission wheel 2722, a transmission groove 2723, a main body seat 211, a rotation adjustment seat 212, an arc-shaped hole 2121, an adjustment screw seat 2111, a fastening screw 213, an adjustment screw 214, a main wheel shaft 221, a main shaft seat 222, a shaft support structure 223, an extension arm 224, a first arm 2231, a second arm 2232, a support bearing 2233, and a locking / unlocking mechanism 2234; Feeding device 300; Polishing device 400, polishing wheel 410; Dust collection water tank 500; 600mm casing. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 8A belt abrasive oscillating grinder includes a base 100 and a belt abrasive grinding device 200. The belt abrasive grinding device 200 includes a base assembly 210, a main wheel base 220, a main wheel 230, a main wheel drive motor 240, a secondary wheel base 250, a secondary wheel 260, and a secondary wheel oscillating mechanism 270. The base assembly 210 is disposed on the base 100, the main wheel base 220 is disposed on the base assembly 210, the main wheel 230 is pivotally disposed on the main wheel base 220, the secondary wheel base 250 is pivotally disposed on the base assembly 210, and the secondary wheel 260 is pivotally disposed on the secondary wheel base 250. The rotation axis of the secondary wheel base 250 is perpendicular to both the axis of the main wheel 230 and the axis of the secondary wheel 260. The main wheel 230 and the auxiliary wheel 260 are used to tension the sanding belt. The main wheel drive motor 240 is configured to drive the main wheel 230 to rotate. The auxiliary wheel swing mechanism 270 is disposed on the seat assembly 210. The auxiliary wheel swing mechanism 270 includes a swing motor assembly 271 and a swing linkage mechanism 272. The swing linkage mechanism 272 connects the output shaft 2711 of the swing motor assembly 271 and the auxiliary wheel seat 250. The swing linkage mechanism 272 is used to link the auxiliary wheel seat 250 to continuously rotate back and forth when the output shaft 2711 of the swing motor assembly 271 rotates.

[0023] During grinding, the output shaft 2711 of the oscillating motor assembly 271 outputs power, which drives the auxiliary wheel seat 250 to rotate back and forth via the oscillating linkage mechanism 272. This causes the angular position of the auxiliary wheel 260 relative to the main wheel 230 to continuously change. Driven by an unbalanced tension force, the sanding belt reciprocates along its width. Because the continuous back-and-forth rotation of the auxiliary wheel 260 is used to achieve the reciprocating movement of the sanding belt in the width direction, the entire sanding belt grinding device does not need to be driven, reducing the strength requirements of components and the output requirements of the driver, thereby reducing costs.

[0024] In one embodiment, the rocking motor assembly 271 employs a combination of a motor and a gearbox, with the motor shaft connected to the input end of the gearbox and the output end of the gearbox serving as the output shaft 2711 of the rocking motor assembly 271. In other embodiments, the rocking motor assembly 271 may also consist only of a motor, whereby the motor shaft can serve as the output shaft 2711 of the rocking motor assembly 271.

[0025] In one embodiment, the main wheel seat 220 is disposed on the seat assembly 210. In some embodiments, the main wheel seat 220 may also be disposed on the base 100. The main wheel drive motor 240 may be disposed together with the main wheel seat 220 on the seat assembly 210 or the base 100, depending on the position of the main wheel seat 220.

[0026] In this embodiment, the swing linkage mechanism 272 includes a transmission arm 2721 and a transmission wheel 2722. One end of the transmission arm 2721 is fixed at a position offset from the pivot axis of the auxiliary wheel seat 250. The other end of the transmission arm 2721 has a transmission groove 2723. The transmission wheel 2722 is connected to the output shaft 2711 of the swing motor assembly 271. The axis of the transmission wheel 2722 does not coincide with the axis of the output shaft 2711. The transmission wheel 2722 is disposed in the transmission groove 2723 and slides in cooperation with the two opposite groove sidewalls of the transmission groove 2723. When the output shaft 2711 of the swing motor assembly 271 rotates, it drives the transmission wheel 2722 to rotate eccentrically, repeatedly pressing the two groove sidewalls of the transmission groove 2723 in sequence, thereby driving the transmission arm 2721 to swing back and forth, and thus driving the auxiliary wheel seat 250 to rotate back and forth. The above structure enables the linkage drive of the auxiliary wheel seat 250. The structure is simple, and the assembly is relatively convenient due to the cooperation of the transmission wheel 2722 and the transmission groove 2723, without the need for complex pivoting or hinged connections.

[0027] It is conceivable that in other embodiments, the rocking linkage mechanism 272 with the above-described structure may not be limited to the implementation of such a mechanism as a crank rocker.

[0028] In this embodiment, the transmission wheel 2722 is a roller structure, which reduces friction and makes the mechanism move more smoothly.

[0029] In one embodiment, the transmission wheel 2722 is rotatably connected to a transmission wheel shaft. The end face of the output shaft 2711 of the rocking motor assembly 271 is provided with a mounting hole for mounting the transmission wheel shaft. The mounting hole is eccentrically set relative to the axis of the output shaft 2711, and the transmission wheel shaft is mounted in the aforementioned mounting hole.

[0030] In this embodiment, the seat assembly 210 includes a main seat 211 and a rotation adjustment seat 212. The main wheel seat 220, main wheel 230, main wheel drive motor 240, auxiliary wheel seat 250, auxiliary wheel 260, and auxiliary wheel rocking mechanism 270 are all disposed on the rotation adjustment seat 212. The rotation adjustment seat 212 is disposed on the main seat 211 and can be adjusted circumferentially relative to the main seat 211 along the horizontal axis. With this structure, the horizontal angle position during belt sanding can be adjusted by adjusting the angle position of the rotation adjustment seat 212 relative to the main seat 211, facilitating adjustments to improve sanding quality according to actual conditions.

[0031] In this embodiment, the center of the rotating adjustment seat 212 is pivotally connected to the main body seat 211 and the pivot axis is horizontally set. The rotating adjustment seat 212 has a plurality of arc-shaped holes 2121, which are arranged circumferentially around the pivot axis of the rotating adjustment seat 212. The center of the extension trajectory of the arc-shaped holes 2121 coincides with the pivot axis of the rotating adjustment seat 212. The main body seat 211 is provided with fastening screw holes corresponding to the arc-shaped holes 2121. Fastening screws 213 are passed through the arc-shaped holes 2121 and are threadedly connected to the fastening screw holes to fasten the rotating adjustment seat 212 to the main body seat 211. The main body seat 211 is provided with two adjusting screw seats 2111, which are arranged vertically and respectively correspond to the upper and lower parts of the rotating adjustment seat 212. Adjusting screws 214 are threadedly connected to the adjusting screw seats 2111, and the end of the adjusting screw 214 is used to abut against the side end face of the rotating adjustment seat 212. When adjusting the angle of the sanding belt, first loosen the fastening screw 213. Then, adjust the engagement position of the adjusting screws 214 on the upper and lower adjusting screw seats 2111, thereby pressing and rotating the adjusting seat 212 to adjust its angular position relative to the main seat 211. After adjusting the angle, tighten the fastening screw 213 again. Using the above structure for angle adjustment allows for fine-tuning and high precision.

[0032] In this embodiment, the base 100 is equipped with a feeding device 300, which is used to feed the workpiece to be ground. The main wheel 230 is arranged opposite to the feeding device 300. The base assembly 210 is equipped with a moving drive platform. The main wheel seat 220, main wheel 230, main wheel drive motor 240, auxiliary wheel seat 250, auxiliary wheel 260, and auxiliary wheel swing mechanism 270 are all arranged on the moving drive platform. The moving drive platform is used to drive the main wheel seat 220, main wheel 230, main wheel drive motor 240, auxiliary wheel seat 250, auxiliary wheel 260, and auxiliary wheel swing mechanism 270 to move closer to and further away from the feeding device 300. With the above structure, the distance between the sanding belt and the feeding device 300 can be adjusted by the moving drive platform, thereby adjusting the grinding depth.

[0033] In this embodiment, the motion drive platform can be a servo motor-driven lead screw motion drive platform or a linear motor. In this embodiment, the aforementioned motion drive platform can serve as the main body 211, thus accommodating both angle and distance adjustment. In this embodiment, the motion drive platform can be equipped with a manual adjustment handle, thus providing both electric and manual adjustment capabilities.

[0034] In this embodiment, the main wheel 230 is mounted on the main wheel shaft 221. The main wheel seat 220 includes a main shaft seat 222 and a shaft support structure 223. One end of the main wheel shaft 221 is mounted on the main shaft seat 222, and the other end is mounted on the shaft support structure 223. The shaft support structure 223 is detachably configured relative to the main wheel shaft 221 and, after being detached from the main wheel shaft 221, can provide axial clearance for the main wheel 230 in the axial direction of the main wheel shaft 221. With the above structure, the main wheel 230 forms support at both ends, resulting in structural stability and preventing bending deformation of the main wheel shaft 221. In addition, it also facilitates the disassembly and installation of the main wheel 230.

[0035] In this embodiment, the main wheel shaft 221 and the main wheel 230 are circumferentially positioned. The main wheel drive motor 240 can drive the main wheel shaft 221 to rotate through belt drive, gear drive, or other means, thereby driving the main wheel 230 to rotate.

[0036] In one embodiment, the main wheel seat 220 includes an extension arm 224, which spans the upper side of the main wheel 230. One end of the extension arm 224 is connected to the main shaft seat 222, and a shaft support structure 223 is disposed at the other end of the extension arm 224. The shaft support structure 223 includes a first arm 2231, a second arm 2232, a support bearing 2233, and a locking / unlocking mechanism 2234. The upper ends of the first arm 2231 and the second arm 2232 are pivotally connected to the extension arm 224, and the first arm 2231 and the second arm 2232 are pivotally connected to their respective pivot axes. An arc-shaped groove is provided on the lower side of the line. The arc-shaped grooves of the first arm 2231 and the second arm 2232 are used to form a bearing hole. The support bearing 2233 is set in the bearing hole. The other end of the main wheel shaft 221 is installed on the support bearing 2233. The locking and unlocking mechanism 2234 is set at the lower end of the first arm 2231 and the second arm 2232, and is used to lock the relative position of the lower ends of the first arm 2231 and the second arm 2232 and unlock them to allow the lower ends of the first arm 2231 and the second arm 2232 to move freely. When it is necessary to disassemble the main wheel 230, the lower ends of the first arm 2231 and the second arm 2232 are unlocked by the locking and unlocking mechanism 2234. Then, the first arm 2231 and the second arm 2232 are rotated upwards and to both sides to open them, thereby making way for the main wheel 230, and then assembly and disassembly can be carried out. The above-mentioned shaft support structure 223 has a simple structure and is easy to implement.

[0037] In this embodiment, the locking / unlocking mechanism 2234 includes a rotating pin rotatably connected to the lower end of the first arm 2231. The lower end of the second arm 2232 has a slot. The rotating pin can rotate into the slot, thereby positioning the relative positions of the lower ends of the first arm 2231 and the second arm 2232. When the rotating pin rotates out of the slot, the first arm 2231 and the second arm 2232 can be allowed to rotate relative to each other and open. It is conceivable that in other embodiments, the locking / unlocking mechanism 2234 is not limited to the above structure. For example, the locking / unlocking mechanism 2234 may use screws to connect the lower ends of the first arm 2231 and the second arm 2232, thereby positioning them. When disassembly is required, the screws are removed to unlock the mechanism.

[0038] In this embodiment, the feeding device 300 is a belt conveyor, and multiple belt sanding devices 200 are arranged along the belt conveyor. The main wheel 230 is positioned opposite to the conveying surface of the belt conveyor. The belt sanding oscillating sander also includes a polishing device 400, which is equipped with a polishing wheel 410. The polishing wheel 410 is positioned opposite to the conveying surface of the belt conveyor, and the polishing device 400 is located on one side of the belt sanding devices 200 along their queue direction. With this structure, continuous multiple belt sanding operations and polishing by the polishing wheel 410 can be achieved. In this embodiment, the polishing wheel 410 can be a nylon wheel, and it can be driven by a motor to rotate for polishing.

[0039] In this embodiment, the base 100 is provided with a dust collection water tank 500, which has a groove. The feeding device 300, each belt sander 200, and the polishing device 400 are all located on the upper side of the dust collection water tank 500. A cover 600 is fitted over the outer side of the main wheel 230 and auxiliary wheel 260 of each belt sander 200, and over the outer side of the polishing wheel 410. The lower end of the cover 600 is open. With this structure, dust overflow can be prevented, and circulating water can be introduced into the dust collection water tank 500 to better collect and process dust.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A belt oscillating grinder, characterized in that, include: Base (100); A belt abrasive grinding device (200) includes a seat assembly (210), a main wheel seat (220), a main wheel (230), a main wheel drive motor (240), a secondary wheel seat (250), a secondary wheel (260), and a secondary wheel swing mechanism (270). The seat assembly (210) is disposed on the machine base (100), the main wheel seat (220) is disposed on the seat assembly (210) or the machine base (100), the main wheel (230) is pivotally disposed on the main wheel seat (220), the secondary wheel seat (250) is pivotally disposed on the seat assembly (210), and the secondary wheel (260) is pivotally disposed on the secondary wheel seat (250). The rotation axis of the secondary wheel seat (250) is parallel to the axis of the main wheel (230) and the axis of the secondary wheel (260). The axes of the two wheels (260) are all perpendicular. The main wheel (230) and the auxiliary wheel (260) are used to tension the sanding belt. The main wheel drive motor (240) is configured to drive the main wheel (230) to rotate. The auxiliary wheel swing mechanism (270) is disposed on the seat assembly (210). The auxiliary wheel swing mechanism (270) includes a swing motor assembly (271) and a swing linkage mechanism (272). The swing linkage mechanism (272) connects the output shaft (2711) of the swing motor assembly (271) and the auxiliary wheel seat (250). The swing linkage mechanism (272) is used to link the auxiliary wheel seat (250) to continuously rotate back and forth when the output shaft (2711) of the swing motor assembly (271) rotates.

2. The belt oscillating grinder according to claim 1, characterized in that: The swing linkage mechanism (272) includes a transmission arm (2721) and a transmission wheel (2722). One end of the transmission arm (2721) is fixed at a position offset from the pivot axis of the auxiliary wheel seat (250). The other end of the transmission arm (2721) is provided with a transmission groove (2723). The transmission wheel (2722) is connected to the output shaft (2711) of the swing motor assembly (271). The axis of the transmission wheel (2722) does not coincide with the axis of the output shaft (2711). The transmission wheel (2722) is disposed in the transmission groove (2723) and slides with the two opposite groove sidewalls of the transmission groove (2723).

3. The belt oscillating grinder according to claim 2, characterized in that: The transmission wheel (2722) is a roller structure.

4. The belt oscillating grinder according to claim 1, characterized in that: The seat assembly (210) includes a main seat (211) and a rotation adjustment seat (212). The main wheel seat (220), the main wheel (230), the main wheel drive motor (240), the auxiliary wheel seat (250), the auxiliary wheel (260), and the auxiliary wheel swing mechanism (270) are all disposed on the rotation adjustment seat (212). The rotation adjustment seat (212) is disposed on the main seat (211) and can adjust its angular position relative to the main seat (211) along the circumferential direction of the horizontal axis.

5. The belt oscillating grinder according to claim 4, characterized in that: The rotating adjustment seat (212) is pivotally connected to the main body seat (211) at its center position, and the pivot axis is horizontally set. The rotating adjustment seat (212) has a plurality of arc-shaped holes (2121), which are arranged circumferentially around the pivot axis of the rotating adjustment seat (212). The center of the extension trajectory of the arc-shaped holes (2121) coincides with the pivot axis of the rotating adjustment seat (212). The main body seat (211) is provided with fastening screw holes corresponding one-to-one with the arc-shaped holes (2121). The arc-shaped holes (2121) are provided with fastening screw holes. A fastening screw (213) is threaded into the fastening screw hole and used to fasten the rotating adjustment seat (212) to the main body seat (211); the main body seat (211) is provided with two adjusting screw seats (2111), the adjusting screw seats (2111) are arranged vertically and respectively corresponding to the upper and lower parts of the rotating adjustment seat (212), the adjusting screw seats (2111) are threaded with adjusting screws (214), and the end of the adjusting screw (214) is used to abut against the side end face of the rotating adjustment seat (212).

6. The belt oscillating grinder according to claim 1, characterized in that: The base (100) is provided with a feeding device (300) for feeding the workpiece to be polished. The main wheel (230) is arranged opposite to the feeding device (300). The seat assembly (210) is provided with a moving drive platform. The main wheel seat (220), the main wheel (230), the main wheel drive motor (240), the auxiliary wheel seat (250), the auxiliary wheel (260), and the auxiliary wheel swing mechanism (270) are all arranged on the moving drive platform. The moving drive platform is used to drive the main wheel seat (220), the main wheel (230), the main wheel drive motor (240), the auxiliary wheel seat (250), the auxiliary wheel (260), and the auxiliary wheel swing mechanism (270) to move closer to and further away from the feeding device (300).

7. The belt oscillating grinder according to claim 1, characterized in that: The main wheel (230) is mounted on the main wheel axle (221). The main wheel seat (220) includes a main shaft seat (222) and a shaft support structure (223). One end of the main wheel axle (221) is mounted on the main shaft seat (222), and the other end of the main wheel axle (221) is mounted on the shaft support structure (223). The shaft support structure (223) is detachably mounted relative to the main wheel axle (221) and can make way for the main wheel (230) in the axial direction of the main wheel axle (221) after being detached relative to the main wheel axle (221).

8. The belt oscillating grinder according to claim 7, characterized in that: The main wheel seat (220) includes an extension arm (224) that spans the upper side of the main wheel (230). One end of the extension arm (224) is connected to the main shaft seat (222), and the shaft support structure (223) is disposed at the other end of the extension arm (224). The shaft support structure (223) includes a first arm (2231), a second arm (2232), a support bearing (2233), and a locking / unlocking mechanism (2234). The upper ends of the first arm (2231) and the second arm (2232) are pivotally connected to the extension arm (224). The first arm (2231) and the second arm (2232) are pivotally connected to their respective pivot points. An arc-shaped groove is provided on the lower side of the rotating shaft. The arc-shaped grooves of the first arm (2231) and the second arm (2232) are used to enclose and form a bearing hole. The support bearing (2233) is used to be disposed in the bearing hole. The other end of the main wheel shaft (221) is installed on the support bearing (2233). The locking and unlocking mechanism (2234) is disposed at the lower end of the first arm (2231) and the second arm (2232) and is used to lock the relative position of the lower end of the first arm (2231) and the second arm (2232) and unlock and allow the lower end of the first arm (2231) and the second arm (2232) to move freely.

9. The belt oscillating grinder according to claim 1, characterized in that: The base (100) is provided with a feeding device (300), which is a belt conveyor. Multiple sanding belt grinding devices (200) are provided and arranged along the belt conveyor. The main wheel (230) is arranged opposite to the conveying surface of the belt conveyor. The sanding belt swing grinder also includes a polishing device (400). The polishing device (400) is provided with a polishing wheel (410). The polishing wheel (410) is arranged opposite to the conveying surface of the belt conveyor. The polishing device (400) is located on one side of the sanding belt grinding devices (200) along their queuing direction.

10. The belt oscillating grinder according to claim 9, characterized in that: The base (100) is provided with a dust collection water tank (500), which has a groove. The feeding device (300), each of the belt sanding devices (200) and the polishing device (400) are all located on the upper side of the dust collection water tank (500). The outer side of the main wheel (230) and the auxiliary wheel (260) of each belt sanding device (200) and the outer side of the polishing wheel (410) are all fitted with a cover (600), and the lower end of the cover (600) is open.

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