CN219521624U

CN219521624U - Polisher suitable for polishing side surfaces of workpieces with different inclinations

Info

Publication number: CN219521624U
Application number: CN202320643946.4U
Authority: CN
Inventors: 付永林
Original assignee: Zhongshan Qishan Machinery Equipment Co ltd
Current assignee: Zhongshan Qishan Machinery Equipment Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-15
Anticipated expiration: 2033-03-28

Abstract

The utility model discloses a grinding machine suitable for grinding side surfaces of workpieces with different inclinations, which comprises: the polishing device comprises a machine base, a workpiece placement assembly, a side polishing device and a moving driving device. The workpiece placement assembly is arranged on the machine base, the workpiece placement assembly is provided with a workpiece loading structure, the side polishing devices are at least two, each side polishing device comprises a side polishing head assembly and a connecting assembly, the connecting assemblies are arranged on the machine base, the side polishing head assemblies are arranged on the connecting assemblies, the connecting assemblies are provided with angle adjusting structures, and each side polishing head assembly can be adjusted to form different angle positions through the corresponding angle adjusting structures. The movement drive is configured to move the workpiece placement assembly relative to the side polishing device to enable a workpiece on the workpiece loading structure to pass through each of the side polishing head assemblies. The grinding machine is suitable for grinding workpieces with different inclination sides, and has high grinding efficiency.

Description

Polisher suitable for polishing side surfaces of workpieces with different inclinations

Technical Field

The utility model relates to polishing equipment, in particular to a polishing machine suitable for polishing sides of workpieces with different inclinations.

Background

Some existing polishing devices are used for polishing the surface of a workpiece through a polishing head after the workpiece is loaded on the polishing device. For some workpieces with complex outer side surfaces, the workpieces have side surfaces with different inclinations, and when the existing polishing equipment is used for polishing, the workpieces are required to be clamped for multiple times and the equipment is adjusted for polishing, so that the improvement of production efficiency is not facilitated.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the polisher suitable for polishing the side surfaces of the workpiece with different inclinations, and the polishing efficiency is higher.

A sander adapted to sand differently sloped sides of a workpiece according to an embodiment of the present utility model includes: a base; the workpiece placement component is arranged on the base and is provided with a workpiece loading structure; the side polishing device comprises a side polishing head assembly and a connecting assembly, the connecting assembly is arranged on the base, the side polishing head assembly is arranged on the connecting assembly, the connecting assembly is provided with an angle adjusting structure, and each side polishing head assembly can be adjusted to form different angle positions through the corresponding angle adjusting structure; and a movement drive configured to move the workpiece placement assembly relative to the side grinding apparatus to enable a workpiece on the workpiece loading structure to pass through each of the side grinding head assemblies.

According to the embodiment of the utility model, the polisher suitable for polishing the side surfaces of workpieces with different inclinations has at least the following beneficial effects: the workpiece to be polished is loaded on the workpiece loading structure, the angle positions of the side polishing head assemblies of each side polishing device are adjusted through the angle adjusting structure according to the side surfaces of the workpiece with different inclinations, so that the side surfaces of the workpiece with different inclinations can be respectively adapted, then the workpiece placement assembly is driven to move through the moving driving device, the workpiece can pass through each side polishing head assembly, and polishing work of the corresponding side surface of the workpiece is completed. The grinding machine has the advantages that the angle adjusting structure is used for adjusting the angle positions of the side grinding head assemblies to adapt to the side faces of workpieces with different inclinations, the workpieces can be loaded at one time, the side faces with different inclinations can be ground, and the grinding efficiency is high.

According to some embodiments of the utility model, the connecting assembly comprises a supporting frame, a rotary supporting piece and a rotary assembly, wherein the supporting frame is arranged on the stand, the rotary supporting piece is arranged on the supporting frame, the rotary assembly is pivoted on the rotary supporting piece through a horizontal pivot shaft, and the side polishing head assembly is connected with the rotary assembly; the angle adjusting structure comprises an arc-shaped strip hole, a locking screw hole and a locking screw, wherein the arc-shaped strip hole is formed in the rotary supporting piece, the circle center of an extension path of the arc-shaped strip hole is coaxial with the horizontal pivot shaft, the locking screw hole is formed in the rotary assembly, the locking screw penetrates through the arc-shaped strip hole and is in threaded connection with the locking screw hole, the diameter of the locking screw is smaller than or equal to the width of the arc-shaped strip hole, and the diameter of a nut of the locking screw is larger than the width of the arc-shaped strip hole.

According to some embodiments of the utility model, the arcuate strap hole and the locking screw hole are provided with at least two sets, each set of the arcuate strap hole and the locking screw hole being arranged around the horizontal pivot axis.

According to some embodiments of the utility model, in each set of the arc-shaped strip hole and the locking screw hole, at least two locking screw holes are arranged along the extending direction of the arc-shaped strip hole.

According to some embodiments of the utility model, the connection assembly is provided with an up-down adjustment structure, and each side sanding head assembly is capable of forming a different up-down position by means of the corresponding up-down adjustment structure.

According to some embodiments of the utility model, the workpiece placement assembly comprises a moving seat, the workpiece loading structure is arranged on the moving seat, the moving seat is provided with a rotary driver for driving a workpiece loaded on the workpiece loading structure to rotate along a vertical axis, the side polishing devices are arranged in two, the side polishing head assemblies of the two side polishing devices are arranged oppositely left and right, and a passing space is formed between the side polishing head assemblies, and the moving driver is configured to drive the moving seat to move back and forth so that the workpiece can move back and forth between the two side polishing head assemblies.

According to some embodiments of the present utility model, the workpiece loading structure includes a carrying seat, a top pressing head, and an up-down driver, the carrying seat is rotatably disposed on the moving seat and has a rotation axis disposed vertically, the rotation driver is disposed on the moving seat, the rotation driver is coupled to the carrying seat and is used for driving the carrying seat to rotate, the up-down driver is connected to the moving seat, the top pressing head is disposed on an upper side of the carrying seat and is connected to the up-down driver, the up-down driver is used for driving the top pressing head to move up and down, and the top pressing head is rotatably disposed and has a rotation axis disposed coaxially with the rotation axis of the carrying seat.

According to some embodiments of the utility model, the coupling assembly is provided with a left-right drive means for driving the side sanding head assembly to move left-right.

According to some embodiments of the utility model, the side sanding head assembly is provided with a sanding section having a sanding face, and the connection assembly is provided with a reciprocating drive means for driving the side sanding head assembly to reciprocate in a width direction of the sanding face.

According to some embodiments of the utility model, the side sanding head assembly comprises an assembly seat, a driving wheel, a driven wheel, a sanding belt and a sanding driving motor, wherein the sanding driving motor is arranged on the assembly seat, the driving wheel is connected with an output shaft of the sanding driving motor, the driven wheel is rotatably arranged on the assembly seat, and the sanding belt is tensioned on the driving wheel and the driven wheel.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is an exploded view of an embodiment of the present utility model;

FIG. 3 is an exploded view of a side grinding apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic perspective view of a workpiece placement assembly and a movement drive according to an embodiment of the utility model;

fig. 5 is a schematic perspective view of a side grinding apparatus according to an embodiment of the utility model.

Reference numerals:

a housing 100;

the workpiece placement assembly 200, the workpiece loading structure 210, the bearing seat 211, the top press head 212, the up-down driver 213, the moving seat 220 and the rotary driver 230;

side grinding device 300, side grinding head assembly 310, assembly seat 311, driving wheel 312, driven wheel 313, abrasive belt 314, grinding driving motor 315, connecting assembly 320, angle adjusting structure 321, arc-shaped strip hole 3211, locking screw hole 3212, supporting frame 322, rotary support 323, rotary assembly 324, horizontal pivot shaft 325, up-down adjusting structure 326, left-right driving device 327 and reciprocating driving device 328;

the driving device 400 is moved.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 5, a sander adapted to sand sides of a workpiece with different inclinations, comprising: the machine frame 100, the workpiece setting assembly 200, the side grinding apparatus 300, and the movement driving apparatus 400. The workpiece placement assembly 200 is arranged on the machine base 100, the workpiece placement assembly 200 is provided with a workpiece loading structure 210, two side polishing devices 300 are arranged, each side polishing device 300 comprises a side polishing head assembly 310 and a connecting assembly 320, the connecting assemblies 320 are arranged on the machine base 100, the side polishing head assemblies 310 are arranged on the connecting assemblies 320, the connecting assemblies 320 are provided with angle adjusting structures 321, and each side polishing head assembly 310 can be adjusted to form different angle positions through the corresponding angle adjusting structures 321. The movement drive 400 is configured to move the workpiece placement assembly 200 relative to the side grinding apparatus 300 to enable workpieces on the workpiece loading structure 210 to pass through each of the side grinding head assemblies 310. It is conceivable that the number of side grinding means 300 is not limited to two, but may be greater than two, for example, and may be specifically configured according to the actual situation.

The workpiece to be polished is loaded on the workpiece loading structure 210, and the angle positions of the side polishing head assemblies 310 of the respective side polishing devices 300 are adjusted by the angle adjusting structure 321 according to the sides of the workpiece with different inclinations, so that the sides of the workpiece with different inclinations can be respectively adapted, and then the workpiece placement assembly 200 is driven to move by the moving driving device 400, so that the workpiece can pass through the respective side polishing head assemblies 310, thereby completing the polishing work of the corresponding workpiece sides. The polishing machine adjusts the angle position of each side polishing head assembly 310 through the angle adjusting structure 321 to adapt to the side surfaces of workpieces with different inclinations, and can load the workpieces once, so that the side surfaces with different inclinations can be polished, and the polishing efficiency is higher.

In the embodiment, the connection assembly 320 includes a support frame 322, a rotation support 323 and a rotation assembly 324, wherein the support frame 322 is disposed on the machine base 100, the rotation support 323 is disposed on the support frame 322, the rotation assembly 324 is pivotally connected to the rotation support 323 through a horizontal pivot shaft 325, and the side polishing head assembly 310 is connected to the rotation assembly 324; the angle adjusting structure 321 comprises an arc-shaped bar hole 3211, a locking screw hole 3212 and a locking screw, the arc-shaped bar hole 3211 is formed in the rotating support 323, the circle center of an extending path of the arc-shaped bar hole 3211 is coaxial with the horizontal pivot shaft 325, the locking screw hole 3212 is formed in the rotating assembly 324, the locking screw penetrates through the arc-shaped bar hole 3211 and is connected with the locking screw hole 3212 in a threaded mode, the diameter of the locking screw is smaller than or equal to the width of the arc-shaped bar hole 3211, and the diameter of a nut of the locking screw is larger than the width of the arc-shaped bar hole 3211. When the angular position of the side polishing head assembly 310 needs to be adjusted, the locking screw is loosened, so that the rotating assembly 324 rotates relative to the rotating support 323 to adjust the angle, the locking screw changes a new position in the arc-shaped strip hole 3211, and the locking screw is re-screwed after the angle is adjusted to the required angle. The angle adjusting structure is simple and easy to implement.

In an embodiment, the arc-shaped bar holes 3211 and the locking screw holes 3212 are provided in four groups, and each group of arc-shaped bar holes 3211 and locking screw holes 3212 are arranged around the horizontal pivot shaft 325. It is conceivable that two or three or more than four sets of arc-shaped strip holes 3211 and locking screw holes 3212 may be provided, and may be specifically configured according to practical situations. When the angle adjustment is not large, the adjustment can be performed in the same group of arc strip holes 3211 and locking screw holes 3212, and when the large angle adjustment is needed, the fastening screw is removed, so that the arc strip holes 3211 in one group are rotated to the locking screw holes 3212 of the adjacent group or the span group, and then the locking screw is screwed again, thereby realizing the large angle adjustment. The structure combines the advantages of fine adjustment and large-scale adjustment, and has wide adjustment range.

In the embodiment, one arc-shaped strip hole 3211 corresponds to three locking screw holes 3212 arranged along the extending direction thereof and is combined to form a group. It is envisioned that one arcuate slot 3211 may correspond to one or two or more than three locking screw holes 3212. When the number of the locking screw holes 3212 is greater than or equal to two, the angle range during the same group adjustment can be prolonged.

It is conceivable that the angle adjusting structure 321 is not limited to the above-described embodiment, for example, a structure in which through holes and screw holes arranged in a circular ring correspond to each other by screw locking. It will be appreciated that there are many embodiments in the art for a two-part angularly adjustable structure, and those skilled in the art will be able to make specific configurations depending on the circumstances.

In an embodiment, the connection assembly 320 is provided with up-down adjustment structures 326, and each side sanding head assembly 310 is capable of being brought into different up-down positions by way of the corresponding up-down adjustment structures 326. With the structure, for the situation that different inclined planes of the workpiece are at different heights, the upper and lower positions of the side polishing head assembly 310 can be adjusted through the upper and lower adjusting structure 326, so that different inclined plane heights can be adapted, and the adaptability is stronger.

In an embodiment, the up-down adjusting structure 326 is a screw lifting slide, to which the side polishing head assembly 310 is connected, and the screw lifting slide may be provided with a hand wheel for manual adjustment, and of course, it is conceivable that the up-down adjusting structure 326 may also employ a screw sliding table driven by a linear motor or a servo motor, for example, so that electric adjustment may be implemented. It will be appreciated that there are many embodiments of structures for achieving the up-down adjustment of the position of the component in the art, and those skilled in the art can configure the structure according to the actual situation.

In an embodiment, the workpiece placement assembly 200 includes a movable base 220, the workpiece loading structure 210 is disposed on the movable base 220, the movable base 220 is provided with a rotation driver 230 for driving the workpiece loaded on the workpiece loading structure 210 to rotate along a vertical axis, the side polishing devices 300 are disposed in two, the side polishing head assemblies 310 of the side polishing devices 300 are disposed opposite to each other in a left-right direction and form a passing space therebetween, and the movable driving device 400 is configured to be capable of driving the movable base 220 to move back and forth so that the workpiece can move back and forth between the side polishing head assemblies 310. One of the side sanding head assemblies 310 on one side may sand the side of the workpiece at the same inclination, the other side sanding head assembly 310 on the other side may sand the side of the workpiece at the other inclination, and the workpiece turning position may be driven by the rotary driver 230 to realize alternate sanding, so that the whole sanding process is ordered and the efficiency is high.

In an embodiment, the movement driving device 400 is a screw sliding table driven by a servo motor, and the workpiece placement assembly 200 is disposed on the stand 100 through the screw sliding table so as to realize movement. Of course, it is conceivable that the movement driving device 400 may also employ a linear motor or the like. It will be appreciated that there are many arrangements in the art for moving the drive member relative to the other member, and those skilled in the art will be able to configure this as appropriate. In an embodiment, the rotary driver 230 may specifically be a servo motor or a stepper motor, and may specifically be configured according to practical situations.

In an embodiment, the workpiece loading structure 210 includes a carrying seat 211, a top pressing head 212 and an up-down driver 213, the carrying seat 211 is rotatably disposed on the moving seat 220 and the rotation axis is vertically disposed, the rotation driver 230 is disposed on the moving seat 220, the rotation driver 230 is coupled with the carrying seat 211 and is used for driving the carrying seat 211 to rotate, the up-down driver 213 is connected with the moving seat 220, the top pressing head 212 is disposed on the upper side of the carrying seat 211 and is connected with the up-down driver 213, the up-down driver 213 is used for driving the top pressing head 212 to move up and down, the top pressing head 212 is rotatably disposed and the rotation axis is coaxially disposed with the rotation axis of the carrying seat 211. When loading the workpiece, the workpiece is placed on the bearing seat 211, and the top pressing head 212 is driven to press down by the up-down driver 213, so that the workpiece is pressed on the bearing seat 211. When the workpiece needs to be turned over, the rotary driver 230 drives the bearing seat 211 to rotate, and the pressing head 212 is configured to rotate, so that the rotation of the workpiece is not affected. The workpiece loading structure 210 fixes the workpiece in a clamping manner, and the workpiece is fixed stably; by providing the rotatable pressing head 212, the up-down driver 213 is rotated together without being fixed to the carrier 211, and interference between the up-down driver 213 and other members is avoided.

Specifically, the up-down driver 213 is a cylinder, and the top pressure head 212 is connected to a piston rod of the cylinder through a bearing. Of course, the up-down driver 213 is not limited to the air cylinder, and may be, for example, an electric push rod or an electromagnet, and the top pressure head 212 may be pivotally connected to the operation portion of the up-down driver 213.

It is envisioned that the workpiece loading structure 210 is not limited to the above embodiments, for example, the workpiece loading structure 210 may be a workpiece holder with other structures, or a carrying table with a receiving groove, a magnetic attraction structure or a vacuum attraction structure, etc., and those skilled in the art may configure the workpiece loading structure according to the actual situation.

In an embodiment, the connection assembly 320 is provided with a left-right drive 327, the left-right drive 327 for driving the side sanding head assembly 310 to move left-right. With the above structure, the side sanding head assembly 310 can move left and right so as to sand from far to near the workpiece, and move away from the workpiece after finishing the sanding, so that the overturning position of the workpiece is not affected; in addition, the left and right drive 327 cooperates with the rotatable workpiece loading structure 210 to provide a structural basis for profile grinding.

In the embodiment, the left-right driving device 327 is a screw sliding table driven by a servo motor, the screw sliding table is arranged left and right, and the side polishing head assembly 310 is connected to the screw sliding table, so that the left-right movement of the side polishing head assembly 310 can be realized. Of course, it is conceivable that the left-right driving device 327 is not limited to the above-described embodiment, and may be a linear motor or the like, for example. It will be appreciated that there are many embodiments of the drive structure that enable the side-to-side movement of the components in the art, and those skilled in the art can be configured as appropriate.

In an embodiment, the side sanding head assembly 310 is provided with a sanding section having a sanding face, the connection assembly 320 is provided with a reciprocating drive 328, and the reciprocating drive 328 is used to drive the side sanding head assembly 310 to reciprocate along the width direction of the sanding face. With the above structure, the reciprocating movement of the side polishing head assembly 310 can be realized, thereby improving polishing efficiency and polishing quality. In an embodiment, if the abrasive belt is adopted for polishing, the polishing part is the abrasive belt, and the polishing surface is the surface of the abrasive belt with gravel; if the grinding wheel is adopted for grinding, the grinding part is the grinding wheel, and the grinding surface is the peripheral surface of the grinding wheel.

In an embodiment, the reciprocating driving device 328 specifically includes a reciprocating driving motor, a crank member and a driving link, where the side polishing head assembly 310 is disposed on the connecting assembly 320 in a sliding manner along a vertical direction, the crank member is fixed on an output shaft of the reciprocating driving motor, one end of the driving link is pivoted to the crank member, and the pivot axis is not coincident with the axis of the output shaft of the reciprocating driving motor, and the other end of the driving link is pivoted to the side polishing head assembly 310. With the above structure, the crank member, the driving link and the side sanding head assembly 310 are equivalent to form a crank block mechanism, so that the side sanding head assembly 310 can reciprocate up and down. It is envisioned that the reciprocating drive 328 is not limited to the embodiments described above, for example, a cylinder may be used to drive the side sanding head assembly 310 for reciprocating movement. It will be appreciated that there are many embodiments of mechanisms for accomplishing the reciprocating movement of the components in the art, and those skilled in the art can be configured as appropriate.

In an embodiment, the side polishing head assembly 310 includes an assembly base 311, a driving wheel 312, a driven wheel 313, an abrasive belt 314, and a polishing driving motor 315, the polishing driving motor 315 is disposed on the assembly base 311, the driving wheel 312 is coupled with an output shaft of the polishing driving motor 315, the driven wheel 313 is rotatably disposed on the assembly base 311, and the abrasive belt 314 is tensioned between the driving wheel 312 and the driven wheel 313. It is envisioned that side sanding head assembly 310 is not limited to the configuration described above, and may be configured as a sanding wheel, for example, that includes a sanding wheel and a motor for driving the sanding wheel in rotation.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A sander adapted to sand differently sloped sides of a workpiece, comprising:

a base (100);

a workpiece placement assembly (200) disposed on the base (100), the workpiece placement assembly (200) being provided with a workpiece loading structure (210);

the side polishing device comprises at least two side polishing devices (300), wherein each side polishing device (300) comprises a side polishing head assembly (310) and a connecting assembly (320), each connecting assembly (320) is arranged on the base (100), each side polishing head assembly (310) is arranged on each connecting assembly (320), each connecting assembly (320) is provided with an angle adjusting structure (321), and each side polishing head assembly (310) can be adjusted to form different angle positions through the corresponding angle adjusting structure (321);

and a movement drive (400) configured to move the workpiece placement assembly (200) relative to the side grinding apparatus (300) to enable workpieces on the workpiece loading structure (210) to pass through each of the side grinding head assemblies (310).

2. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 1, wherein: the connecting assembly (320) comprises a supporting frame (322), a rotary supporting piece (323) and a rotary assembly (324), the supporting frame (322) is arranged on the base (100), the rotary supporting piece (323) is arranged on the supporting frame (322), the rotary assembly (324) is pivoted to the rotary supporting piece (323) through a horizontal pivoting shaft (325), and the side polishing head assembly (310) is connected to the rotary assembly (324); the angle adjusting structure (321) comprises an arc-shaped strip hole (3211), a locking screw hole (3212) and a locking screw, the arc-shaped strip hole (3211) is formed in the rotary supporting piece (323), the circle center of an extending path of the arc-shaped strip hole (3211) is coaxial with the horizontal pivot shaft (325), the locking screw hole (3212) is formed in the rotary assembly (324), the locking screw penetrates through the arc-shaped strip hole (3211) and is in threaded connection with the locking screw hole (3212), the diameter of the locking screw is smaller than or equal to the width of the arc-shaped strip hole (3211), and the diameter of a nut of the locking screw is larger than the width of the arc-shaped strip hole (3211).

3. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 2, wherein: the arc-shaped strip holes (3211) and the locking screw holes (3212) are provided with at least two groups, and each group of arc-shaped strip holes (3211) and locking screw holes (3212) are distributed around the horizontal pivot shaft (325).

4. A sander adapted for sanding sides of a workpiece with different inclinations as set forth in claim 3, wherein: in each group of arc-shaped strip holes (3211) and locking screw holes (3212), at least two locking screw holes (3212) are arranged along the extending direction of the arc-shaped strip holes (3211).

5. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 1, wherein: the connecting assembly (320) is provided with an up-down adjusting structure (326), and each side polishing head assembly (310) can form different up-down positions through the corresponding up-down adjusting structure (326).

6. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 1 or 5, wherein: the workpiece placement assembly (200) comprises a moving seat (220), the workpiece loading structure (210) is arranged on the moving seat (220), the moving seat (220) is provided with a rotary driver (230) for driving workpieces loaded on the workpiece loading structure (210) to rotate along a vertical axis, two side polishing devices (300) are arranged, the side polishing head assemblies (310) of the two side polishing devices (300) are oppositely arranged left and right, a passing space is formed between the two side polishing head assemblies, and the moving driving device (400) is configured to drive the moving seat (220) to move back and forth so that the workpieces can move back and forth between the two side polishing head assemblies (310).

7. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 6, wherein: the workpiece loading structure (210) comprises a bearing seat (211), a top pressing head (212) and an upper driver (213) and a lower driver (213), wherein the bearing seat (211) is rotationally arranged on the moving seat (220) and the rotating axis is vertically arranged, the rotating driver (230) is arranged on the moving seat (220), the rotating driver (230) is connected with the bearing seat (211) and is used for driving the bearing seat (211) to rotate, the upper driver (213) and the lower driver (213) are connected with the moving seat (220), the top pressing head (212) is arranged on the upper side of the bearing seat (211) and is connected with the upper driver (213) and the lower driver (213) is used for driving the top pressing head (212) to move up and down, and the top pressing head (212) is rotationally arranged and the rotating axis is coaxial with the rotating axis of the bearing seat (211).

8. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 6, wherein: the connecting assembly (320) is provided with a left-right driving device (327), and the left-right driving device (327) is used for driving the side polishing head assembly (310) to move left and right.

9. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 1, wherein: the side polishing head assembly (310) is provided with a polishing part, the polishing part is provided with a polishing surface, the connecting assembly (320) is provided with a reciprocating driving device (328), and the reciprocating driving device (328) is used for driving the side polishing head assembly (310) to reciprocate along the width direction of the polishing surface.

10. A sander adapted to sand differently sloped sides of a workpiece as set forth in claim 1, wherein: the side polishing head assembly (310) comprises an assembly seat (311), a driving wheel (312), a driven wheel (313), an abrasive belt (314) and a polishing driving motor (315), wherein the polishing driving motor (315) is arranged on the assembly seat (311), the driving wheel (312) is connected with an output shaft of the polishing driving motor (315), the driven wheel (313) is rotatably arranged on the assembly seat (311), and the abrasive belt (314) is tensioned on the driving wheel (312) and the driven wheel (313).