Alignment reference device and multi-station belt sander alignment device

Abstract

The application discloses a position reference device and a multi-station abrasive belt machine alignment device, and is used for a multi-station abrasive belt machine, the multi-station abrasive belt machine comprising a plurality of polishing wheels, a first abrasive belt and a chuck mechanism, the polishing wheels being used for connecting the first abrasive belt, so that the first abrasive belt forms a multi-station polishing abrasive belt, wherein the position reference device comprises a base body, a first connecting part and a positioning part, the first connecting part being arranged on the base body and being used for being connected with the chuck mechanism of the multi-station abrasive belt machine, and the positioning part being arranged on the base body and being used for abutting against the base of the polishing wheel. In the application, the position reference device abuts against the base of the polishing wheel through the positioning part, has high alignment efficiency, is convenient for quickly adjusting the position of the polishing wheel and improves the installation efficiency of the multi-station abrasive belt machine.

Description

Technical Field

[0001] This application relates to the field of multi-station belt sander technology, and more specifically, to an alignment reference and a multi-station belt sander alignment device. Background Technology

[0002] A belt sander is a mechanical device used for grinding and polishing, and is widely used in woodworking and metal processing.

[0003] A belt sander uses a motor to drive a pulley to rotate, which in turn moves a first sanding belt tensioned on the pulley. The sanding belt then rubs against the workpiece to complete the sanding operation. For example, application number 202310807028.5 discloses a belt sander including a frame with a first pulley, a second pulley, a third pulley, a fourth pulley, and a first sanding belt. Laterally, the third pulley is located between the first and second pulleys; the third pulley is positioned lower than the first and second pulleys; the fourth pulley is lower than the second pulley. Laterally, the second and fourth pulleys are located on the same side of the third pulley. The first sanding belt of the belt sander has a first winding method, and the first sanding belt passes sequentially through the first, second, third, and fourth pulleys.

[0004] Its drawback lies at least in that this belt sander is not suitable for simultaneously grinding multiple workpieces, resulting in low machine efficiency. Therefore, it is necessary to design a multi-station belt sander. The technical challenge of a multi-station belt sander lies in the simultaneous positioning and installation of polishing wheels at multiple stations, ensuring that all polishing wheels are on the same horizontal line. In existing technologies, the installation position of the polishing wheels usually relies on the operator's experience. During installation, the polishing wheels are prone to misalignment, and aligning the polishing wheels is time-consuming and labor-intensive.

[0005] Therefore, existing technologies need to be improved. Utility Model Content

[0006] The purpose of this application is to provide a positioning reference and a multi-station belt sander alignment device, which aims to solve the technical problem of how to improve the alignment efficiency of polishing wheels in multi-station applications.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] In a first aspect, this application provides a positioning reference for a multi-station belt sander, the multi-station belt sander including a plurality of polishing wheels, a first sanding belt, and a chuck mechanism, wherein the polishing wheels are used to connect the first sanding belt, so that the first sanding belt forms a multi-station grinding sanding belt, wherein the positioning reference includes:

[0009] Base body;

[0010] A first connecting part is disposed on the base body and is used to connect with the chuck mechanism of the multi-station belt sander.

[0011] The alignment part is disposed on the base body and is used to abut against the base of the polishing wheel.

[0012] In one embodiment, the alignment portion includes:

[0013] Alignment rod, wherein the alignment rod is disposed on the base body;

[0014] A second connecting part is disposed on the alignment rod, and the second connecting part is used to connect the alignment rod and the base body;

[0015] An abutting part is provided on the alignment rod, and the abutting part is used to insert into the alignment hole of the polishing wheel and abut against the alignment hole.

[0016] In one embodiment, the abutting portion is provided with a tapered tip, which is used to abut against the alignment hole.

[0017] In one embodiment, a first through hole is provided at the middle position of the base body, and the first connecting part is provided on the inner wall of the first through hole.

[0018] In one embodiment, the first through hole includes a first through hole, a second through hole, and a third through hole connected in sequence, wherein the diameter of the first through hole is larger than the diameter of the second through hole, and the diameter of the second through hole is larger than the diameter of the third through hole.

[0019] In one embodiment, the first connecting portion is provided with a first snap-fit ​​portion, and the clamping mechanism is provided with a second snap-fit ​​portion that cooperates with the first snap-fit ​​portion.

[0020] In one embodiment, the first snap-fit ​​portion includes:

[0021] Several recessed portions are provided on the inner wall of the first through hole;

[0022] Several protrusions are provided on the inner wall of the first through hole.

[0023] In one embodiment, the recess includes:

[0024] The first recess is disposed on the inner wall of the first through hole;

[0025] The second recess is disposed on the inner wall of the second through hole;

[0026] The third recess is provided on the inner wall of the third through hole;

[0027] The protrusion includes:

[0028] The second protrusion is disposed on the inner wall of the second through hole;

[0029] The third protrusion is disposed on the inner wall of the third through hole.

[0030] Secondly, this application provides a multi-station belt sander alignment device, which includes the alignment reference device as described in the above embodiment.

[0031] In one embodiment, it further includes: a chuck mechanism, the chuck mechanism comprising:

[0032] A motion assembly, which is movably disposed on the multi-station belt sander;

[0033] A chuck base is disposed on the motion assembly;

[0034] A plurality of chucks are arranged in a straight line, each chuck being disposed on a chuck base. Each chuck is equipped with an alignment reference. A motion assembly drives the chuck base to move, causing the chucks to move the alignment references toward the polishing wheels, thereby aligning the tapered tips of the alignment references with the alignment holes on each polishing wheel.

[0035] The advantages of the alignment reference device and multi-station belt sander alignment device provided in this application are at least as follows:

[0036] This application discloses an alignment reference and an alignment device for a multi-station belt sander. The multi-station belt sander includes several polishing wheels, a first sanding belt, and a chuck mechanism. The polishing wheels connect to the first sanding belt, forming a multi-station grinding belt. The alignment reference includes a base body, a first connecting part, and an alignment part. The first connecting part is disposed on the base body and connects to the chuck mechanism of the multi-station belt sander. The alignment part is disposed on the base body and abuts against the base of the polishing wheels. In this application, the alignment reference, through the abutment between the alignment part and the base of the polishing wheels, achieves high alignment efficiency, facilitates quick adjustment of the polishing wheel position, and improves the installation efficiency of the multi-station belt sander. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the alignment reference provided in an embodiment of this application;

[0039] Figure 2 This is a schematic diagram illustrating the usage state of the alignment reference provided in the embodiments of this application;

[0040] Figure 3 A cross-sectional structural diagram of the base body provided in an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the structure of the base body provided in the embodiments of this application;

[0042] Figure 5 A schematic diagram of the assembly structure of the alignment reference device and the multi-station belt sander provided in the embodiments of this application;

[0043] Figure 6 This is a schematic diagram of the assembly structure of the polishing wheel and the first abrasive belt provided in an embodiment of this application.

[0044] The following are the labeling elements in the figure:

[0045] 100. Base body; 200. First connecting part; 300. Alignment part; 400. Multi-station belt sander; 110. First through hole; 111. First through hole; 112. Second through hole; 113. Third through hole; 210. Recessed part; 220. Protruding part; 211. First inner concave part; 212. Second inner concave part; 213. Third inner concave part; 221. Second outer protrusion; 222. Third outer protrusion; 310. Alignment rod; 320. Second connecting part; 330. Abutment part; 331. Conical tip; 410. Polishing wheel; 420. First sanding belt; 430. Chuck mechanism; 411. Base; 412. Alignment hole; 431. Motion component; 432. Chuck base; 433. Chuck piece. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0047] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0048] Example 1:

[0049] Please see Figure 1 and Figure 2 This embodiment provides a positioning reference for a multi-station belt sander 400. The multi-station belt sander 400 includes several polishing wheels 410, a first sanding belt 420, and a chuck mechanism 430. The polishing wheels 410 are used to connect the first sanding belt 420, so that the first sanding belt 420 forms a multi-station grinding sanding belt. The positioning reference includes a base body 100, a first connecting part 200, and a positioning part 300. The first connecting part 200 is disposed on the base body 100 and is used to connect with the chuck mechanism 430 of the multi-station belt sander 400. The positioning part 300 is disposed on the base body 100 and is used to abut against the base 411 of the polishing wheel 410.

[0050] In this embodiment, the alignment reference includes a base body 100, a first connecting portion 200, and an alignment portion 300. The base body 100 is provided with the first connecting portion 200 and the alignment portion 300. The first connecting portion 200 is used to mount the base body 100. For example, the first connecting portion 200 can be connected to the chuck 433 of the chuck mechanism 430. The alignment portion 300 is used to abut against the base 411 of the polishing wheel 410. For example, when the chuck mechanism 430 reaches a designated position, the alignment portion 300 is aligned. If the alignment part 300 abuts against the base 411 of the polishing wheel 410, it can be determined that the installation position of the polishing wheel 410 is OK. When the installation position of the polishing wheel 410 is OK, there is no need to adjust the installation position of the polishing wheel 410. If there is a gap between the alignment part 300 and the polishing wheel 410 when the chuck mechanism 430 reaches the designated position, it can be determined that the installation position of the polishing wheel 410 is NG. Then it is necessary to adjust the installation position of the polishing wheel 410 so that the polishing wheel 410 abuts against the alignment part 300.

[0051] In practical applications, the multi-station belt sander 400 includes several polishing wheels 410 and a first sanding belt 420. The first sanding belt 420 is wound around the polishing wheels 410, and the polishing wheels 410 cause the first sanding belt 420 to protrude outward to form a processing station. That is, one polishing wheel 410 corresponds to one processing station, thus forming a multi-station belt sander 400. When installing the polishing wheels 410, it is necessary to ensure that each polishing wheel 410 is on the same horizontal line to ensure the horizontal position of each processing station.

[0052] During the processing, a row of chucks 433 is provided on the chuck mechanism 430. Each chuck 433 holds one workpiece, that is, one chuck 433 corresponds to one processing station. If the installation position of a certain polishing wheel 410 is not on the same horizontal line, it will cause the corresponding processing station to deviate. When a row of chucks 433 holds a row of workpieces for processing, it will cause a row of processing stations to be unable to process a row of workpieces at the same time, that is, the processing of one or more stations of the multi-station belt sander 400 will fail.

[0053] After the polishing wheel 410 and the first sanding belt 420 are installed, alignment references can be installed on the chuck 433 of the chuck mechanism 430. Then, the chuck mechanism 430 drives a row of alignment references to move closer to a row of polishing wheels 410 until the alignment part 300 of the alignment reference abuts against the base 411 of the polishing wheel 410. After that, check the alignment of each alignment reference and the corresponding polishing wheel 410. For example, if there is a gap between a polishing wheel 410 and the alignment part 300, the polishing wheel 410 is adjusted forward so that it abuts against the alignment part 300; if the position of a polishing wheel 410 protrudes forward, the polishing wheel 410 is adjusted backward until each polishing wheel 410 abuts against the corresponding alignment reference. This ensures that each polishing wheel 410 is in the same horizontal position, thus ensuring the horizontal position of each processing station.

[0054] The multi-station belt sander 400, polishing wheel 410, first sanding belt 420, and chuck mechanism 430 can all be understood as existing technology, and their specific structures will not be described in detail.

[0055] Therefore, in this embodiment, the alignment reference device abuts against the base 411 of the polishing wheel 410 through the alignment part 300, which has high alignment efficiency, facilitates quick adjustment of the position of the polishing wheel 410, and improves the installation efficiency of the multi-station belt sander 400.

[0056] Specifically, please refer to Figure 1The alignment part 300 includes an alignment rod 310, a second connecting part 320, and an abutting part 330. The alignment rod 310 is disposed on the base body 100, the second connecting part 320 is disposed on the alignment rod 310, and the second connecting part 320 is used to connect the alignment rod 310 and the base body 100. The abutting part 330 is disposed on the alignment rod 310, and the abutting part 330 is used to insert into the alignment hole 412 of the polishing wheel 410 and abut against the alignment hole 412.

[0057] In this embodiment, the alignment part 300 includes an alignment rod 310, a second connecting part 320, and an abutting part 330. The alignment rod 310 is provided with the second connecting part 320 and the abutting part 330. For example, one end of the alignment rod 310 is provided with the second connecting part 320, and the other end is provided with the abutting part 330. The second connecting part 320 is used to connect with the base body 100, and the abutting part 330 is used to abut against the alignment hole 412 of the polishing wheel 410. The alignment rod 310 has a simple structure and is easy to implement. For example, the second connecting part 320 can be provided with an external thread, and the base body 100 is provided with an internal thread that matches the external thread. That is, the alignment rod 310 can be detachably connected to the base body 100 through the external thread, which is convenient for disassembly and assembly. At the same time, the alignment rod 310 and the base body 100 can be processed separately, reducing the processing difficulty and facilitating the processing of the base body 100 and the alignment rod 310. The abutting part 330 is used to insert into the alignment hole 412 of the polishing wheel 410 and abut against the alignment hole 412. That is, the polishing wheel 410 is provided with the alignment hole 412. When the chuck mechanism 430 drives the alignment part 300 to move towards the polishing wheel 410, the abutting part 330 can be inserted into the alignment hole 412 to achieve docking with the polishing wheel 410, which can quickly ensure the installation position of the polishing wheel 410 and improve the installation efficiency.

[0058] Specifically, please refer to Figure 1 The abutting part 330 is provided with a tapered tip 331, which is used to abut against the alignment hole 412.

[0059] In this embodiment, the abutment portion 330 is provided with a tapered tip 331. When the abutment portion 330 can be inserted into the alignment hole 412, the smaller end of the tapered tip 331 is inserted into the alignment hole 412 first, and then the larger end of the tapered tip 331 is slowly inserted into the alignment hole 412. The outer contour of the tapered tip 331 can match and connect with the inner wall of the alignment hole 412. The process of the abutment portion 330 being inserted into the alignment hole 412 is relatively gentle, which facilitates the insertion of the abutment portion 330 into the alignment hole 412. For example, the alignment hole 412 can be configured as a tapered hole that mates with the tapered tip 331.

[0060] Specifically, please refer to Figure 3 A first through hole 110 is provided in the middle of the base body 100, and a first connecting part 200 is provided on the inner wall of the first through hole 110.

[0061] In this embodiment, the first connecting part 200 is used to install the base body 100. For example, the first connecting part 200 can be connected to the chuck member 433 of the chuck mechanism 430. The first connecting part 200 is on the inner wall of the first through hole 110. When installing the base body 100, the base body 100 can be sleeved on the chuck member 433 through the first through hole 110, so that the first connecting part 200 and the chuck member 433 can be connected in a cooperative manner, making installation convenient.

[0062] Specifically, please refer to Figure 3 and Figure 4 The first through hole 110 includes a first through hole 111, a second through hole 112 and a third through hole 113 connected in sequence, and the diameter of the first through hole 111 is larger than the diameter of the second through hole 112, and the diameter of the second through hole 112 is larger than the diameter of the third through hole 113.

[0063] In this embodiment, the first through hole 110 includes a first through hole 111, a second through hole 112, and a third through hole 113 connected in sequence. It can be understood that the first through hole 111 is distributed at the bottom of the mounting base, and the diameter of the first through hole 111 is larger than the diameter of the second through hole 112, and the diameter of the second through hole 112 is larger than the diameter of the third through hole 113. For example, the chuck 433 is connected to the first through hole 111, the second through hole 112, and the third through hole 113. Thus, the first through hole 111, the second through hole 112, and the third through hole 113 can form a stepped structure. The stepped structure can restrict the movement of the base body 100, so that the base body 100 is fixed on the chuck 433. When installing the base body 100, the base body 100 is simply put on the chuck 433, which is convenient for installation.

[0064] To prevent axial misalignment when the base body 100 and the clamping mechanism 430 are connected, the first connecting part 200 is provided with a first locking part, and correspondingly, the clamping mechanism 430 is provided with a second locking part that mates with the first locking part. When the alignment reference is installed on the clamping mechanism 430, the first locking part and the second locking part engage to limit the movement and facilitate easy assembly and disassembly. For example, the first locking part can be a protruding structure, and the second locking part can be a groove structure.

[0065] Specifically, please refer to Figure 4 The first snap-fit ​​portion includes: a plurality of recessed portions 210 and a plurality of protruding portions 220, wherein the recessed portions 210 are disposed on the inner wall of the first through hole 110 and the protruding portions 220 are disposed on the inner wall of the first through hole 110.

[0066] In this embodiment, the first snap-fit ​​portion is snapped into the second snap-fit ​​portion by a plurality of recessed portions 210 and a plurality of protruding portions 220, so as to play a limiting role, ensuring stable connection and convenient assembly and disassembly.

[0067] Specifically, please refer to Figure 4 The recessed portion 210 may include a first recess 211, a second recess 212, and a third recess 213. The first recess 211 is disposed on the inner wall of the first through hole 111, the second recess 212 is disposed on the inner wall of the second through hole 112, and the third recess 213 is disposed on the inner wall of the third through hole 113. The protruding portion 220 includes a second outward protrusion 221 and a third outward protrusion 222. The second outward protrusion 221 is disposed on the inner wall of the second through hole 112, and the third outward protrusion 222 is disposed on the inner wall of the third through hole 113.

[0068] In this embodiment, the first through hole 110 is composed of a first through hole 111, a second through hole 112, and a third through hole 113. The diameter of the first through hole 111 is larger than the diameter of the second through hole 112, and the diameter of the second through hole 112 is larger than the diameter of the third through hole 113. The first through hole 111 has a first concave portion 211, the second through hole 112 has a second concave portion 212 and a second convex portion 221, and the third through hole 113 has a third concave portion 213 and a third convex portion 221. When the alignment reference is inserted into the chuck mechanism 430, it is only necessary to align the alignment reference with the chuck mechanism 430. Then the alignment reference can automatically slide into the chuck mechanism 430 and be automatically locked by the stepped structure. At the same time, the first inner concave 211, the second inner concave 212, the third inner concave 213, the second outer convex 221, and the third outer convex 222 can restrict the movement of the base body 100, prevent the base body 100 from rotating, ensure stable connection, facilitate easy assembly and disassembly, and improve installation efficiency.

[0069] Example 2:

[0070] Please see Figure 5 This embodiment provides a multi-station belt sander alignment device, which includes the alignment reference device as described in the above embodiment. Therefore, this multi-station belt sander alignment device possesses all the technical features and beneficial effects of the aforementioned alignment reference device, which will not be elaborated further.

[0071] Example 3:

[0072] Please see Figure 5 and Figure 6This embodiment provides a multi-station belt sander alignment device, which may include alignment references and a chuck mechanism 430. The chuck mechanism 430 includes a motion component 431, a chuck base 432, and a plurality of chuck members 433 arranged in a straight line. The motion component 431 is movably disposed on the multi-station belt sander 400, the chuck base 432 is disposed on the motion component 431, and the chuck members 433 are disposed on the chuck base 432. An alignment reference is disposed on the chuck member 433. The motion component 431 is used to drive the chuck base 432 to move, so that the chuck member 433 drives the alignment reference to move towards the polishing wheel 410, so as to realize that the conical tips 331 on a row of alignment references correspond one-to-one with the alignment holes 412 on the base 411 of each polishing wheel 410.

[0073] In this embodiment, the chuck mechanism 430 includes a motion component 431, a chuck base 432, and a plurality of chuck members 433 arranged in a straight line. Each chuck member 433 can be equipped with an alignment reference, so that the chuck base 432 can be provided with a row of alignment references arranged in a straight line. The motion component 431 can drive the row of alignment references arranged in a straight line to move towards the polishing wheel 410, so that each alignment reference is engaged with the corresponding polishing wheel 410. During engagement, the conical tip 331 on the reference can be inserted into the alignment hole 412 on the base 411 of the polishing wheel 410. If a certain conical tip 331 is misaligned with the corresponding alignment hole 412, the position of the polishing wheel 410 needs to be adjusted so that the conical tip 331 matches the alignment hole 412.

[0074] For example, a multi-station belt sander 400 can be equipped with four polishing wheels 410. The four polishing wheels 410 enable the first sanding belt 420 to form four convex grinding stations. Correspondingly, the chuck mechanism 430 can be equipped with four chucks 433 arranged in a straight line. The alignment reference is installed on the chuck 433. The chuck mechanism 430 can drive the four alignment references to move to one side of the four polishing wheels 410. When a certain conical tip 331 is misaligned with the corresponding alignment hole 412, the position of the polishing wheel 410 needs to be adjusted so that the conical tip 331 matches and aligns with the alignment hole 412. After alignment, the conical tips 331 of the four alignment references can be inserted into the alignment holes 412 of the four polishing wheels 410 at the same time. The alignment efficiency is high, and it is easy to quickly adjust the position of the polishing wheels 410, thereby improving the installation efficiency of the polishing wheels 410.

[0075] In summary, this application discloses an alignment reference and an alignment device for a multi-station belt sander. The multi-station belt sander includes several polishing wheels, a first sanding belt, and a chuck mechanism. The polishing wheels connect to the first sanding belt, forming a multi-station grinding belt. The device includes a base body, a first connecting part, and an alignment part. The first connecting part is disposed on the base body and connects to the chuck mechanism of the multi-station belt sander. The alignment part is disposed on the base body and abuts against the base of the polishing wheels. In this application, the alignment reference, through the abutment between the alignment part and the base of the polishing wheels, achieves high alignment efficiency, facilitates rapid adjustment of the polishing wheel position, and improves the installation efficiency of the multi-station belt sander.

[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A position reference device for a multi-station belt sander, the multi-station belt sander comprising a number of polishing wheels for connecting a first abrasive belt such that the first abrasive belt forms a multi-station abrasive belt, a first abrasive belt and a chuck mechanism, characterized in that, The alignment reference comprises: a base body; a first connecting part provided on the base body, the first connecting part being used for connecting with a chuck mechanism of the multi-station abrasive belt machine; an alignment part provided on the base body, the alignment part being used for abutting with a base of the polishing wheel.

2. The alignment reference of claim 1, wherein, The alignment part comprises: an alignment rod provided on the base body; a second connecting part provided on the alignment rod, the second connecting part being used for connecting the alignment rod and the base body; an abutting part provided on the alignment rod, the abutting part being used for being inserted into and abutting with an alignment hole of the polishing wheel.

3. The alignment reference of claim 2, wherein, The abutting part is provided with a tapered tip used for abutting with the alignment hole.

4. The alignment reference of claim 1, wherein, A first through hole is provided at a middle position of the base body, and a first connecting part is provided on an inner wall of the first through hole.

5. The alignment reference of claim 4, wherein, The first through hole comprises a first via, a second via and a third via which are sequentially communicated, and a diameter of the first via is greater than a diameter of the second via, and the diameter of the second via is greater than a diameter of the third via.

6. The alignment reference of claim 5, wherein, The first connecting part is provided with a first clamping part, and a second clamping part matched with the first clamping part is provided on the chuck mechanism.

7. The alignment reference of claim 6, wherein, The first clamping part comprises: a plurality of recessed parts provided on an inner wall of the first through hole; a plurality of protruding parts provided on the inner wall of the first through hole.

8. The alignment reference of claim 7, wherein, The recessed parts comprise: a first inner recess provided on an inner wall of the first via; a second inner recess provided on an inner wall of the second via; a third inner recess provided on an inner wall of the third via; The protruding parts comprise: a second outer protrusion provided on an inner wall of the second via; a third outer protrusion provided on an inner wall of the third via.

9. A multi-station belt sander alignment device characterized by, The alignment reference comprises:

10. The multi-station belt sander alignment device of claim 9, wherein, a chuck mechanism comprising: a movement assembly movably provided on the multi-station abrasive belt machine; a chuck base provided on the movement assembly; a plurality of straightly arranged chuck pieces provided on the chuck base, the chuck pieces being provided with the alignment reference, and the movement assembly being used for driving the chuck base to move, so that the chuck pieces drive the alignment reference to move to one side of the polishing wheel, to realize that the tapered tips on the alignment reference are one-to-one corresponding to the alignment holes on each polishing wheel. The alignment reference comprises:

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