Feeding and discharging sand blasting auxiliary jig

By designing a sandblasting auxiliary fixture for loading and unloading, the lightweight workpiece is fixed using a combination of positioning suction head and magnetic suction plate, the problem that lightweight workpieces are easily blown during the sandblasting process is solved, and the uniformity and efficiency of sandblasting are improved.

CN223071168UActive Publication Date: 2025-07-08DONGGUAN SHENGXIANG PRECISION METAL
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Patent Information

Application Number
CN202422199197.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-06
Publication Date
2025-07-08
Estimated Expiration
2034-09-06

AI Technical Summary

Technical Problem

Lightweight workpieces are easily blown during the sandblasting process, resulting in uneven sandblasting and affecting production progress.

Method used

A loading and unloading sandblasting auxiliary fixture is designed. Through the combination of the positioning suction head and the magnetic suction plate, the workpiece is fixed using the weight of the positioning suction head to avoid position deviation, and the positioning suction head is kept in the limit slot through magnet suction to ensure the stability of the workpiece.

Benefits of technology

The uniformity and consistency of sandblasting of workpieces is achieved, the sandblasting efficiency is improved, and the batch processing of lightweight workpieces is facilitated.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a feeding and discharging sand blasting auxiliary jig which comprises a positioning plate, a plurality of placing blocks are arranged on one side of the positioning plate, and the placing blocks are used for placing workpieces to be subjected to sand blasting; the auxiliary plate is detachably arranged on one side of the positioning plate, a plurality of limiting inserting grooves are formed in one side of the auxiliary plate, positioning suction heads are inserted into the limiting inserting grooves, material pressing columns are arranged at one ends of the positioning suction heads, the material pressing columns of the positioning suction heads face the workpieces of the placing blocks correspondingly, and the positioning suction heads are arranged on the auxiliary plate. A limiting inserting hole is formed in one side of each placing block, a penetrating hole is formed in each workpiece, the limiting inserting holes communicate with the penetrating holes of the workpieces, the multiple pressing columns penetrate through the penetrating holes of the multiple workpieces correspondingly, and the penetrating ends of the multiple pressing columns are connected with the limiting inserting holes of the multiple placing blocks in an inserted mode, so that the positioning suction heads abut against the workpieces. The technical problems that a workpiece is light in weight and easy to blow in the sand blasting process can be solved.
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Description

Technical Field

[0001] This application relates to the field of sandblasting jigs, and particularly to an upper and lower material sandblasting auxiliary jig. Background Art

[0002] During the manufacturing process of metal workpieces, due to the limitations of processing means such as cutting and forming, some defects such as burrs often remain on the surface of the workpieces. These defects not only affect the appearance of the workpieces, but may also weaken their structural strength and service performance. Therefore, sandblasting treatment, as an effective surface pretreatment method, is widely used. Usually, sandblasting treatment uses high-pressure air flow to spray abrasives (such as quartz sand, steel sand, etc.) onto the surface of the workpiece at high speed. Through the impact and friction of the abrasives, the burrs on the surface of the workpiece are removed. When sandblasting, the spraying pressure of the abrasives is relatively large, generally between several to more than a dozen bars. This high pressure can effectively remove stubborn defects on the surface of the workpiece. However, the high-speed air flow has great power. When it hits the workpiece, it will generate a corresponding thrust. If the weight of the workpiece is relatively light and its gravity is not sufficient to resist the thrust of the air flow, the workpiece will be blown, resulting in uneven sandblasting of the workpiece and delaying the production progress. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. For this reason, this application provides an upper and lower material sandblasting auxiliary jig, which can solve the technical problem that the workpiece is relatively light and is easily blown during the sandblasting process.

[0004] The upper and lower material sandblasting auxiliary jig according to the first aspect embodiment of this application includes:

[0005] A positioning plate, on one side of which there are a plurality of placing blocks for placing the workpieces to be sandblasted;

[0006] An auxiliary plate detachably arranged on one side of the positioning plate. On one side of the auxiliary plate, there are a plurality of limiting slots. A positioning suction head is inserted into the inside of the limiting slots. One end of the positioning suction head is provided with a pressure column. The pressure columns of the plurality of positioning suction heads respectively face the workpieces of the plurality of placing blocks. A limiting insertion hole is opened on one side of the placing block, and a through hole is opened inside the workpiece. The limiting insertion hole communicates with the through hole of the workpiece. The plurality of pressure columns respectively pass through the through holes of the plurality of workpieces, and the inserting ends of the plurality of pressure columns are inserted into the limiting insertion holes of the plurality of placing blocks, so that the positioning suction head abuts against the workpiece;

[0007] The magnetic attraction plate is detachably arranged on one side of the auxiliary plate. A plurality of magnets are arranged on one side of the magnetic attraction plate. A plurality of connecting grooves are formed on the other side of the auxiliary plate. The plurality of connecting grooves are respectively communicated with the plurality of limiting slots. The size of the connecting groove is smaller than that of the limiting slot. The plurality of magnets respectively pass through the plurality of connecting grooves, so that the plurality of magnets are attracted to the plurality of positioning suction heads.

[0008] The loading and unloading sandblasting auxiliary jig according to the embodiment of the present application has at least the following beneficial effects:

[0009] Before sandblasting, the workpiece is placed on the placing block of the positioning plate. Each placing block corresponds to one workpiece. Then the magnetic attraction plate is installed on one side of the auxiliary plate. At this time, the positioning suction head of the pressure column is installed in the limiting slot of the auxiliary plate. The magnet of the magnetic attraction plate is attracted to the positioning suction head, so that the positioning suction head is kept in the limiting slot. Then the rear auxiliary plate with the magnetic attraction plate installed is installed on the positioning plate, so that the pressure column passes through the through hole of the workpiece and is finally inserted into the limiting insertion hole of the placing block. At this time, the magnetic attraction plate is taken out. Since the size of the connecting groove is smaller than that of the limiting slot, the positioning suction head cannot pass through the connecting groove. Even if the magnetic attraction plate is removed, the positioning suction head will not be taken away by the magnet and still remains in the limiting slot of the auxiliary plate. Then the auxiliary plate is taken out, and the pressure is applied to the workpiece by the weight of the positioning suction head itself to fix the workpiece, and then the workpiece on the positioning plate can be sandblasted. Thus, under the resistance of the positioning suction head to the workpiece, the position deviation of the workpiece under the high-speed air flow is avoided, and the uniformity and consistency of the sandblasting effect of the workpiece are ensured. And it is convenient to insert a plurality of pressure columns into the through holes of the workpiece simultaneously in batches, improving the feeding efficiency of the workpiece.

[0010] According to some embodiments of the present application, a plurality of magnetic attraction insertion columns are arranged at the bottom of the magnetic attraction plate. The length of the magnetic attraction insertion column is longer than that of the magnet. A setting groove is formed at one end of the magnetic attraction insertion column. The setting groove is matched with the size of the magnet. The plurality of magnets are respectively installed inside the setting grooves of the plurality of magnetic attraction insertion columns. The plurality of magnetic attraction insertion columns respectively pass through the plurality of connecting grooves, so that the plurality of magnets are attracted to the plurality of positioning suction heads.

[0011] According to some embodiments of the present application, a plurality of guiding grooves are formed on the other side of the auxiliary plate. The plurality of guiding grooves are respectively communicated with the plurality of connecting grooves. The shape of the guiding groove is a cone.

[0012] According to some embodiments of the present application, it further includes a loading tray. The loading tray is detachably installed on one side of the positioning plate. A plurality of placing positions are formed on one side of the loading tray. The placing positions are used for storing workpieces.

[0013] According to some embodiments of the present application, an extension plate is provided on the outer edge of the loading tray. A positioning hole is formed inside the extension plate. A positioning pin is provided on one side of the positioning plate, and the positioning pin is inserted into the positioning hole.

[0014] According to some embodiments of the present application, a positioning plug is provided at one end of the positioning pin. The shape of the positioning plug is a cone, and the positioning plug is inserted into the positioning hole.

[0015] According to some embodiments of the present application, a first mounting hole is formed on one side of the positioning plate. A first mounting end is provided at the other end of the positioning pin, and the first mounting end is in threaded cooperation with the first mounting hole.

[0016] According to some embodiments of the present application, a first limiting post is provided on one side of the positioning plate, and a second limiting post is provided on one side of the auxiliary plate. The first limiting post abuts against the second limiting post.

[0017] According to some embodiments of the present application, a second mounting hole is formed on one side of the positioning plate. A second mounting end is provided at one end of the first limiting post, and the second mounting end is in threaded cooperation with the second mounting hole. A third mounting hole is formed on one side of the auxiliary plate. A third mounting end is provided at one end of the second limiting post, and the third mounting end is in threaded cooperation with the third mounting hole.

[0018] According to some embodiments of the present application, a positioning block is provided on one side of the placing block. The limiting jack penetrates through one side of the positioning block. An installation groove is formed on one side of the workpiece. The shape of the positioning block matches the shape of the installation groove of the workpiece. The workpiece is made of an elastic material, and the positioning block is snap-fitted with the installation groove of the workpiece.

[0019] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0020] The following further illustrates the present application with reference to the drawings and embodiments, where:

[0021] Figure 1 is a schematic structural diagram of the loading and unloading sandblasting auxiliary fixture of the present application;

[0022] Figure 2 is a schematic structural diagram of the positioning plate of the loading and unloading sandblasting auxiliary fixture of the present application;

[0023] Figure 3 is a schematic structural diagram of the positioning pin of the loading and unloading sandblasting auxiliary fixture of the present application;

[0024] Figure 4Structural schematic diagram of the loading tray of the loading and unloading sandblasting auxiliary fixture of the present application;

[0025] Figure 5 Structural schematic diagram of the pressure column of the loading and unloading sandblasting auxiliary fixture of the present application;

[0026] Figure 6 Structural schematic diagram of the auxiliary plate of the loading and unloading sandblasting auxiliary fixture of the present application;

[0027] Figure 7 Structural schematic diagram of the connection groove of the loading and unloading sandblasting auxiliary fixture of the present application;

[0028] Figure 8 Structural schematic diagram of the magnetic attraction plate of the loading and unloading sandblasting auxiliary fixture of the present application.

[0029] Reference numerals:

[0030] Positioning plate 100, placing block 110, positioning block 111, buffer soft pad 112, limit jack 113, workpiece 120, installation groove 121, through hole 122, positioning pin 130, positioning plug 131, first installation end 132, first installation hole 133, first limit post 140, second installation end 141, second installation hole 142;

[0031] Loading tray 200, extension plate 210, positioning hole 211, placing position 220;

[0032] Auxiliary plate 300, limit slot 310, connection groove 311, guide groove 312, second limit post 320, third installation end 321, third installation hole 322;

[0033] Pressure column 400, positioning suction head 410;

[0034] Magnetic attraction plate 500, magnetic attraction plug post 510, setting groove 511, magnet 512. Detailed implementation manners

[0035] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0036] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0037] In the description of the present application, the meaning of several is more than one, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the recited number, and understandings such as above, below, within, etc. include the recited number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0038] In the description of the present application, unless otherwise clearly defined, words such as set, install, connect, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0039] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Refer to Figures 1 to 8 , the loading and unloading sandblasting auxiliary jig, comprising:

[0041] The positioning plate 100, a plurality of placement blocks 110 are provided on one side of the positioning plate 100, and the placement blocks 110 are used for placing the workpiece 120 to be sandblasted;

[0042] The auxiliary plate 300 is detachably arranged on one side of the positioning plate 100. A plurality of limiting slots 310 are formed on one side of the auxiliary plate 300. A positioning suction head 410 is inserted into the interior of the limiting slot 310. A pressing column 400 is arranged at one end of the positioning suction head 410. The pressing columns 400 of the plurality of positioning suction heads 410 respectively face the workpieces 120 of the plurality of placing blocks 110. A limiting jack 113 is formed on one side of the placing block 110. A through hole 122 is formed inside the workpiece 120. The limiting jack 113 communicates with the through hole 122 of the workpiece 120. The pressing columns 400 respectively pass through the through holes 122 of the plurality of workpieces 120. The inserting ends of the plurality of pressing columns 400 are inserted into the limiting jacks 113 of the plurality of placing blocks 110, so that the positioning suction head 410 abuts against the workpiece 120;

[0043] The magnetic suction plate 500 is detachably arranged on one side of the auxiliary plate 300. A plurality of magnets 512 are arranged on one side of the magnetic suction plate 500. A plurality of connecting grooves 311 are formed on the other side of the auxiliary plate 300. The plurality of connecting grooves 311 respectively communicate with the plurality of limiting slots 310. The size of the connecting groove 311 is smaller than the size of the limiting slot 310. The plurality of magnets 512 respectively pass through the plurality of connecting grooves 311, so that the plurality of magnets 512 are attracted to the plurality of positioning suction heads 410.

[0044] It can be understood that before sandblasting, the workpiece 120 is placed on the placing block 110 of the positioning plate 100, and each placing block 110 corresponds to one workpiece 120. Then the magnetic suction plate 500 is installed on one side of the auxiliary plate 300. At this time, the positioning suction head 410 of the pressing column 400 is installed in the limiting slot 310 of the auxiliary plate 300. The magnet 512 of the magnetic suction plate 500 attracts the positioning suction head 410, so that the positioning suction head 410 is kept in the limiting slot 310. Then the auxiliary plate 300 with the magnetic suction plate 500 installed is installed on the positioning plate 100, so that the pressing column 400 passes through the through hole 122 of the workpiece 120 and is finally inserted into the limiting jack 113 of the placing block 110. At this time, the magnetic suction plate 500 is taken out. Since the size of the connecting groove 311 is smaller than the size of the limiting slot 310, the positioning suction head 410 cannot pass through the connecting groove 311. Even if the magnetic suction plate 500 is removed, the positioning suction head 410 will not be taken away by the magnet 512 and still remains in the limiting slot 310 of the auxiliary plate 300. Then the auxiliary plate 300 is taken out, and the positioning suction head 410 applies pressure to the workpiece 120 by its own weight to fix the workpiece 120. Then the workpiece 120 on the positioning plate 100 can be sandblasted. Thus, under the abutment of the positioning suction head 410 against the workpiece 120, the position deviation of the workpiece 120 under the high-speed air flow is avoided, ensuring the uniformity and consistency of the sandblasting effect of the workpiece 120, and facilitating the batch insertion of the plurality of pressing columns 400 into the through holes 122 of the workpiece 120 at the same time, improving the feeding efficiency of the workpiece 120.

[0045] In addition, after the workpiece 120 is sandblasted, the auxiliary plate 300 is installed on the positioning plate 100, so that the limiting slot 310 of the auxiliary plate 300 is inserted into the positioning suction head 410. Then, the magnetic attraction plate 500 is installed on the auxiliary plate 300, so that the magnet 512 of the magnetic attraction plate 500 passes through the connection slot 311 and is attracted to the positioning suction head 410. At this time, the auxiliary plate 300 installed with the magnetic attraction plate 500 is separated from the positioning plate 100, so as to facilitate taking away multiple pressure columns 400 in batches under the magnetic force of the magnet 512, so as to facilitate the reuse of the workpiece 120 in the next batch.

[0046] It should be noted that in order to avoid increasing the placement stability of the workpiece 120, the weight of the positioning suction head 410 is heavier than that of the workpiece 120, so that the positioning suction head 410 has enough weight to press the workpiece 120 tightly.

[0047] Refer to Figures 5 to 8 , in some specific embodiments, a plurality of magnetic attraction insertion columns 510 are provided at the bottom of the magnetic attraction plate 500. The length of the magnetic attraction insertion column 510 is longer than that of the magnet 512. A setting groove 511 is provided at one end of the magnetic attraction insertion column 510. The setting groove 511 matches the size of the magnet 512. A plurality of magnets 512 are respectively installed inside the setting grooves 511 of the plurality of magnetic attraction insertion columns 510. The plurality of magnetic attraction insertion columns 510 respectively penetrate through the plurality of connection slots 311, so that the plurality of magnets 512 are attracted to the plurality of positioning suction heads 410.

[0048] It can be understood that since the length of the magnetic attraction insertion column 510 is longer than that of the magnet 512, the magnetic attraction insertion column 510 provides enough physical length for the magnet 512 to ensure a stable magnetic attraction connection between the magnet 512 and the positioning suction head 410.

[0049] Refer to Figure 7 , in some specific embodiments, a plurality of guide grooves 312 are provided on the other side of the auxiliary plate 300. The plurality of guide grooves 312 communicate with the plurality of connection slots 311 respectively. The shape of the guide groove 312 is a cone.

[0050] It can be understood that when the magnetic attraction plate 500 is installed on the auxiliary plate 300, the magnetic attraction insertion column 510 and the magnet 512 need to smoothly enter the connection slot 311 from the guide groove 312. The conical shape helps the magnet 512 to automatically align before entering the connection slot 311, reducing friction and damage during the installation process of the magnetic attraction insertion column 510 and the magnet 512.

[0051] Refer to Figure 4 , in some specific embodiments, it further includes a loading tray 200. The loading tray 200 is detachably installed on one side of the positioning plate 100. A plurality of placement positions 220 are provided on one side of the loading tray 200, and the placement positions 220 are used to store the workpiece 120.

[0052] It is understandable that the loading tray 200 is used to store the workpiece 120 when the workpiece 120 is not placed on the positioning plate 100. When loading the workpiece 120, in order to prevent the workpiece 120 from falling under the action of gravity, it is necessary to flip the positioning plate 100. At this time, the placing block 110 of the positioning plate 100 faces downward and is installed on one side of the loading tray 200, so that the placing position 220 is aligned with the placing block 110. Then, the loading tray 200 and the positioning plate 100 are flipped together. At this time, the placing position 220 of the loading tray 200 faces downward, and the placing block 110 of the positioning plate 100 faces upward. The workpiece 120 will fall onto the placing block 110 of the positioning plate 100 under the action of gravity, thus facilitating the batch loading of the workpiece 120 and improving the loading efficiency.

[0053] Refer to Figure 4 , in some specific embodiments, an extension plate 210 is provided on the outer edge of the loading tray 200, a positioning hole 211 is opened inside the extension plate 210, and a positioning pin 130 is provided on one side of the positioning plate 100. The positioning pin 130 is inserted into the positioning hole 211.

[0054] It is understandable that when installing the loading tray 200 onto the positioning plate 100, the positioning pin 130 will be inserted into the positioning hole 211 on the extension plate 210 to form a firm connection. This connection method ensures that the loading tray 200 will not be displaced during the installation process, and guarantees the accurate placement position 220 of the workpiece 120.

[0055] Refer to Figure 3 , in some specific embodiments, a positioning plug 131 is provided at one end of the positioning pin 130. The shape of the positioning plug 131 is a cone, and the positioning plug 131 is inserted into the positioning hole 211.

[0056] It is understandable that the conical shape design reduces the friction between the positioning plug 131 and the positioning hole 211, thereby reducing the wear of the positioning plug 131 and extending the service life of the positioning pin 130.

[0057] Refer to Figure 3 , in some specific embodiments, a first mounting hole 133 is opened on one side of the positioning plate 100, and a first mounting end 132 is provided at the other end of the positioning pin 130. The first mounting end 132 is in threaded cooperation with the first mounting hole 133.

[0058] It is understandable that since the positioning pin 130 is frequently used, the performance of the positioning pin 130 will decline due to cumulative wear and eventually lead to damage. When the positioning pin 130 is damaged, the damaged positioning pin 130 can be easily disassembled by rotating the first mounting end 132, so as to facilitate the installation of a new positioning pin 130.

[0059] Refer toFigures 3 to 5 , in some specific embodiments, a first limiting post 140 is provided on one side of the positioning plate 100, and a second limiting post 320 is provided on one side of the auxiliary plate 300, and the first limiting post 140 abuts against the second limiting post 320.

[0060] It can be understood that since the workpiece 120 is easily damaged by collision, when the auxiliary plate 300 is installed on the positioning plate 100, the first limiting post 140 and the second limiting post 320 will abut against each other, so that there will be a gap when the auxiliary plate 300 is installed on the positioning plate 100, thereby keeping an appropriate distance between the auxiliary plate 300 and the workpiece 120 during installation, avoiding the collision between the auxiliary plate 300 and the workpiece 120, and preventing the damage of the workpiece 120.

[0061] Refer to Figures 3 to 5 , in some specific embodiments, a second mounting hole 142 is provided on one side of the positioning plate 100, a second mounting end 141 is provided at one end of the first limiting post 140, and the second mounting end 141 is in threaded fit with the second mounting hole 142. A third mounting hole 322 is formed on one side of the auxiliary plate 300, and a third mounting end 321 is provided at one end of the second limiting post 320, and the third mounting end 321 is in threaded fit with the third mounting hole 322.

[0062] It can be understood that since the first limiting post 140 and the second limiting post 320 come into contact first when the auxiliary plate 300 is installed on the positioning plate 100, the first limiting post 140 and the second limiting post 320 are easily damaged. After the first limiting post 140 and the second limiting post 320 are damaged, by rotating the second mounting end 141 and the third mounting end 321, it is convenient to replace the first limiting post 140 and the second limiting post 320.

[0063] Refer to Figure 3 , in some specific embodiments, a positioning block 111 is provided on one side of the placing block 110, a buffer soft pad 112 is provided on one side of the positioning block 111, the buffer soft pad 112 has elasticity, a limiting jack 113 penetrates through one side of the positioning block 111, and an installation groove 121 is formed on one side of the workpiece 120. The shape of the positioning block 111 matches the shape of the installation groove 121 of the workpiece 120. The workpiece 120 is made of an elastic material, and the positioning block 111 is snap-fitted with the installation groove 121 of the workpiece 120.

[0064] It can be understood that when the workpiece 120 is placed on the placing block 110, the shape of the positioning block 111 matches the shape of the installation groove 121 of the workpiece 120, and the positioning block 111 is snap-fitted with the installation groove 121 of the workpiece 120, ensuring the fixed position of the workpiece 120 on the placing block 110. And since the workpiece 120 is made of an elastic material, the workpiece 120 can be better fixed on the positioning block 111, increasing the stability of the workpiece 120.

[0065] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. Loading and unloading sandblasting auxiliary jig, characterized in that, Including: A positioning plate, on one side of which there are a plurality of placement blocks for placing workpieces to be sandblasted. An auxiliary plate detachably arranged on one side of the positioning plate. On one side of the auxiliary plate, there are a plurality of limiting slots. Inside the limiting slots, there are positioning suction heads inserted. One end of the positioning suction head is provided with a pressure column. The pressure columns of the plurality of positioning suction heads respectively face the workpieces on the plurality of placement blocks. On one side of the placement block, there are limiting jacks, and inside the workpiece, there are through holes. The limiting jacks communicate with the through holes of the workpiece. The plurality of pressure columns respectively pass through the through holes of the plurality of workpieces, and the inserted ends of the plurality of pressure columns are inserted into the limiting jacks of the plurality of placement blocks, so that the positioning suction heads are in contact with the workpieces. A magnetic attraction plate detachably arranged on one side of the auxiliary plate. On one side of the magnetic attraction plate, there are a plurality of magnets. On the other side of the auxiliary plate, there are a plurality of connection grooves. The plurality of connection grooves respectively communicate with the plurality of limiting slots. The size of the connection grooves is smaller than that of the limiting slots. The plurality of magnets respectively pass through the plurality of connection grooves, so that the plurality of magnets are attracted to the plurality of positioning suction heads.

2. The loading and unloading sandblasting auxiliary jig according to claim 1, wherein, At the bottom of the magnetic attraction plate, there are a plurality of magnetic attraction insertion posts. The length of the magnetic attraction insertion posts is longer than that of the magnets. One end of the magnetic attraction insertion post is provided with a setting groove, and the setting groove matches the size of the magnet. The plurality of magnets are respectively installed inside the setting grooves of the plurality of magnetic attraction insertion posts. The plurality of magnetic attraction insertion posts respectively pass through the plurality of connection grooves, so that the plurality of magnets are attracted to the plurality of positioning suction heads.

3. The loading and unloading sandblasting auxiliary jig according to claim 2, wherein, On the other side of the auxiliary plate, there are a plurality of guiding grooves. The plurality of guiding grooves respectively communicate with the plurality of connection grooves. The shape of the guiding grooves is a cone.

4. The loading and unloading sandblasting auxiliary jig according to claim 1, wherein It also includes a loading tray detachably installed on one side of the positioning plate. On one side of the loading tray, there are a plurality of placement positions for storing workpieces.

5. The loading and unloading sandblasting auxiliary jig according to claim 4, wherein On the outer edge of the loading tray, there is an extension plate. Inside the extension plate, there is a positioning hole. On one side of the positioning plate, there is a positioning pin inserted into the positioning hole.

6. The loading and unloading sandblasting auxiliary jig according to claim 5, characterized in that, One end of the positioning pin is provided with a positioning plug, and the shape of the positioning plug is a cone. The positioning plug is inserted into the positioning hole.

7. The loading and unloading sandblasting auxiliary jig according to claim 6, characterized in that, On one side of the positioning plate, there is a first installation hole. The other end of the positioning pin is provided with a first installation end, and the first installation end is in threaded cooperation with the first installation hole.

8. The loading and unloading sandblasting auxiliary jig according to claim 1, wherein, On one side of the positioning plate, there is a first limiting post. On one side of the auxiliary plate, there is a second limiting post. The first limiting post abuts against the second limiting post.

9. The loading and unloading sandblasting auxiliary fixture according to claim 8, wherein On one side of the positioning plate, there is a second installation hole. One end of the first limiting post is provided with a second installation end, and the second installation end is in threaded cooperation with the second installation hole. On one side of the auxiliary plate, there is a third installation hole. One end of the second limiting post is provided with a third installation end, and the third installation end is in threaded cooperation with the third installation hole.

10. The loading and unloading sandblasting auxiliary jig according to claim 1, wherein, One side of the placement block is provided with a positioning block, the limiting jack penetrates through one side of the positioning block, an installation groove is formed on one side of the workpiece, the shape of the positioning block matches the shape of the installation groove of the workpiece, the workpiece is made of an elastic material, and the positioning block is clamped with the installation groove of the workpiece.