CN219073340U - Material disc for automatic spraying artificial hip joint - Google Patents

Abstract

The utility model discloses a material disc upper positioning plate for automatically spraying an artificial hip joint, which is provided with a plurality of material feeding grooves which are arranged in an array and communicated, wherein the material feeding grooves are of an inverted cone table structure; the lower positioning plate is connected with the upper positioning plate through a connecting column and provided with a plurality of lower material tanks which are arranged in an array and are communicated with each other; the artificial hip joint simultaneously and fittingly passes through the corresponding upper material groove and the lower material groove; the foot support is arranged at four corners of the bottom of the lower positioning plate. According to the utility model, the automatic artificial hip joint spraying equipment is perfected through the material disc, so that compared with the manual spraying, the spraying equipment is more uniform in spraying, the occupation and consumption of labor force are greatly reduced, the spraying quality and efficiency of the artificial hip joint are improved, producers are effectively protected from being affected by dust, high temperature and noise, and the production environment of the artificial hip joint is optimized.

Description

Material disc for automatic spraying artificial hip joint

Technical Field

The utility model relates to the technical field of artificial hip joint spraying, in particular to a material disc for automatically spraying an artificial hip joint.

Background

With the development of medicine, the demand of artificial joints is increasing, and the artificial joints need to replace the functions of the joints, so the requirements on materials are very high. In the prior art, the spraying artificial joint is manually operated by a worker.

The preparation method of the bioactive gradient coating artificial joint disclosed by the publication No. CN1081072C adopts a plasma spraying technology, wherein the bioactive gradient coating with gradient change in composition and structure is sprayed on a metal substrate, and the bottom layer comprises 30-40% by weight of titanium dioxide (TiO 2), 10-20% by weight of bioglass powder, 10-20% by weight of zirconium oxide (ZrO 2) and 20-30% by weight of Hydroxyapatite (HAP); the intermediate layer comprises 30-40% of zirconia (ZrO 2), 10-20% of bioglass powder and 50-70% of Hydroxyapatite (HAP); the surface layer was 100% wt of hydroxyapatite. Mixing the above materials, and spraying in layers. The thickness of the artificial joint gradient coating can reach 100-150 mu m, the bonding strength reaches 40MPa, the problems that the existing artificial joint coating is easy to fall off and is easy to be eroded and dissolved by body fluid are solved, and the long-term curative effect can be maintained after the artificial joint coating is implanted into a part with a large load of a human body.

However, when the plasma spray gun is operated, noise and high temperature are generated, and with dust diffusion, operators generally need to wear protective equipment such as earmuffs, high-temperature-resistant gloves, gas masks and the like to carry out manual operation. But nonetheless, after a period of operation, the hands are scalded red. In addition, the manual spraying mode not only can influence the feeding uniformity and reduce the spraying efficiency, but also can influence the safety of human bodies, and a large amount of labor force is occupied and consumed.

Disclosure of Invention

The utility model aims to solve the defects of manual spraying in the prior art, and provides a material disc for automatically spraying an artificial hip joint.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a material dish for automizing spraying artificial hip joint includes

The upper positioning plate is provided with a plurality of material feeding grooves which are arranged in an array manner and are communicated, and the material feeding grooves are of an inverted cone table structure;

the lower positioning plate is connected with the upper positioning plate through a connecting column and provided with a plurality of lower material tanks which are arranged in an array and are communicated with each other; the artificial hip joint simultaneously and fittingly passes through the corresponding upper material groove and the lower material groove;

the foot support is arranged at four corners of the bottom of the lower positioning plate.

In one mode, the bottom of the lower locating plate is provided with an independent and non-through locating groove, the locating groove is positioned between two adjacent rows of lower material grooves, symmetrically arranged and through locating holes are formed in the locating groove, and a sensor sensing plate with a convex locating groove is arranged in the locating groove and at the central position between the two locating holes.

In one mode, the material tray is horizontally arranged on the workbench.

In one mode, a plurality of groups of first positioning pins and second positioning pins which are arranged in an array manner and a plurality of groups of baffles which are arranged in an array manner are arranged on the top surface of the workbench, and a sensor is arranged at the central position between each group of first positioning pins and each group of second positioning pins;

the first locating pins and the second locating pins of the same group are respectively inserted into different locating holes of the same lower locating plate, the sensor sensing plate abuts against the sensor, and each group of baffle plates separates adjacent material trays.

The utility model has the following beneficial effects:

1. the material disc perfects the equipment for automatically spraying the artificial hip joint, so that compared with the traditional artificial spraying mode, the spraying equipment is more uniform in spraying, the occupation and consumption of labor force are greatly reduced, and the spraying quality and efficiency of the artificial hip joint are improved;

2. the material disc has positive effects in the health management work of traditional spraying operators, can cooperate with the whole spraying equipment to effectively protect the producer from being affected by dust, high temperature and noise, and optimizes the production environment of the artificial hip joint.

Drawings

FIG. 1 is a schematic view of the overall structure of a material tray for automated painting of an artificial hip joint according to the present utility model;

FIG. 2 is a schematic perspective view of the top structure of the material tray of the present utility model;

FIG. 3 is a schematic perspective view of the bottom structure of the material tray of the present utility model;

FIG. 4 is a schematic perspective view of a workbench according to the utility model;

FIG. 5 is a schematic perspective view of a spray arm according to the present utility model;

FIG. 6 is an enlarged schematic view of the encircled portion of FIG. 5;

FIG. 7 is a schematic perspective view of a table mounting table according to the present utility model;

FIG. 8 is a schematic perspective view of a front structure of a rotary driving structure according to the present utility model;

FIG. 9 is a schematic diagram of the transmission structure of the rotary table portion of the present utility model;

fig. 10 is a schematic view of a partially cut-away configuration of a drive shaft portion of the present utility model.

Legend description:

1. a spraying platform; 2. a rotary table; 201. a shield; 202. part clamping jaws; 203. a dust cover; 204. an outer cover; 205. positioning columns; 206. a positive pressure nozzle; 207. a workbench mounting table; 208. an electromagnetic valve; 209. a speed reducer; 210. a drive belt; 211. a second tensioning wheel; 212. the tensioning wheel is divided into brackets; 213. a clamping cylinder; 214. a rotating disc; 215. a gas-electric slip ring; 216. a gas-electric slip ring bracket; 217. a first bearing seat; 218. a driven pulley; 219. a second bearing seat; 220. a driving pulley; 221. a first tensioning wheel; 222. a tensioning wheel bracket; 223. a speed reducer bracket; 224. a second bearing; 225. a transmission shaft; 226. a first bearing; 227. expanding sleeve; 228. an inner dust guard; 229. an outer dust guard; 3. a spraying mechanical arm; 301. a mounting plate; 302. a plasma torch; 303. a spray gun mount; 304. a jaw mount; 305. a clamping jaw cylinder; 306. a jaw head; 4. a material tray; 401. an upper positioning plate; 402. positioning holes; 403. a foot support; 404. a lower positioning plate; 405. a connecting column; 406. a sensor sensing plate; 5. a work table; 501. a first positioning pin; 502. a baffle; 503. a sensor; 504. a second positioning pin; 6. an artificial hip joint.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

To better illustrate a material tray for automated painting of an artificial hip joint, the present embodiment illustrates the material tray in connection with an entire automated artificial hip joint painting apparatus.

Referring to fig. 1-10, one embodiment provided by the present utility model is:

as shown in fig. 1, the automated artificial hip joint spraying device is mainly divided into three major module parts: a spraying platform 1, a rotary mechanical arm and a workbench 5. The spraying platform 1 and the workbench 5 are horizontally placed, and the rotating mechanical arm needs to be arranged at a position where the spraying platform 1 and the workbench 5 can be reached, namely, the working radius of the rotating mechanical arm needs to cover the spraying platform 1 and the workbench 5.

The spraying platform 1 is integrally of an openable sealing structure, a spraying cavity is arranged in the spraying platform, a ventilating duct is arranged at the top of the spraying platform, and an opening with a proper size is reserved in the spraying cavity for the rotary mechanical arm to go in and go out. The spraying cavity of the spraying platform 1 is provided with horizontal rotary tables 2, preferably four rotary tables 2, which are arranged in a transverse equidistant array, and the rotary tables 2 can clamp and rotate the artificial hip joint 6.

The spraying mechanical arm 3 is arranged outside the spraying platform 1, in front of the rotary workbench 2, and can take, place and spray the artificial hip joint 6.

As shown in fig. 4, a storage door is provided on the side of the table 5, devices can be stored in the storage door, and the top surface of the table 5 is divided into a plurality of areas with the same size according to the area. Preferably, the top surface of the workbench 5 is divided into four square areas, the areas of each area are the same, each area is provided with a first locating pin 501 and a second locating pin 504 at corresponding positions, and the positions are arranged to be aligned with the relevant slotted holes of the material tray 4. A sensor 503, preferably an infrared sensor 503 or a load sensor 503, is provided at a central position between the first positioning pin 501 and the second positioning pin 504 inside the same area. A special baffle 502 is arranged at the edge of each area adjacent to two adjacent areas, and the baffle 502 can separate the material tray 4 which is subsequently installed in the current area and the material tray 4 which is adjacent to the area.

As shown in fig. 2 and 3, a plurality of individual trays 4 are provided on the table 5. The material trays 4 are all placed horizontally. Each tray 4 comprises an upper positioning plate 401 and a lower positioning plate 404. The upper positioning plate 401 is provided with a plurality of upper material tanks which are communicated and arranged in an array, the upper material tanks are of an inverted cone table structure, and the specific shape ensures that the upper material tanks are matched with the corresponding parts of the artificial hip joint 6 in appearance. The lower locating plate 404 is provided with a plurality of lower material tanks which are communicated and arranged in an array, the lower material tanks are also ensured to coincide with the corresponding parts of the artificial hip joint 6 in appearance, the upper material tanks and the lower material tanks are kept aligned, namely the artificial hip joint 6 downwards sequentially passes through the upper material tanks and the lower material tanks, the corresponding parts of the artificial hip joint 6 can be completely matched with the two tanks and are fixed, and the purpose of storing the artificial hip joint 6 by the material disc 4 is realized. The upper positioning plate 401 and the lower positioning plate 404 are in butt joint installation through mounting seats and connecting columns 405 arranged at four corners. The bottom of the lower locating plate 404 is also provided with special foot supports 403 at four corners for raising the height of the lower locating plate 404, thereby facilitating the prevention of the artificial hip joint 6 and preventing the bottom of the artificial hip joint 6 from contacting with the table top. Preferably, a separate and non-penetrating positioning groove is formed in the bottom of the lower positioning plate 404. The positioning groove is rectangular long strip groove and is positioned between two adjacent rows of lower material grooves, the positioning groove is internally provided with symmetrically arranged and communicated positioning holes 402, and a sensor sensing plate 406 protruding the positioning groove is arranged at the central position between the two positioning holes 402 in the positioning groove. The first positioning pin 501 and the second positioning pin 504 of the same area are respectively inserted into different positioning holes 402 of the same lower positioning plate 404. The sensor sensing plate 406 abuts against the sensor 503 to sense and confirm that the tray 4 is loaded on the table 5.

The material trays 4 are of various types, and the material trays 4 of different types are only different in the shape and structure of the material tank, so as to adapt to and fix the artificial hip joints 6 of different structural sizes.

As shown in fig. 5 and 6, the spraying mechanical arm 3 is a programmed six-axis mechanical arm, and can translate the docking arm back and forth, up and down, and left and right, meanwhile, a mounting plate 301 is arranged at the tail end of the docking arm, the mounting plate 301 is in an L-shaped structure, and the mounting plate 301 is arranged in parallel relative to the docking arm of the spraying mechanical arm 3. The bottom of the long arm end of the mounting plate 301 is provided with a clamping jaw mounting part 304, one end of the clamping jaw mounting part 304 is arranged at a certain angle with the mounting plate 301, preferably, the clamping jaw mounting part 304 is an angular special-shaped part, one end of the clamping jaw mounting part is directly mounted on the mounting plate 301, and the other end of the clamping jaw mounting part is provided with a clamping jaw cylinder 305. The jaw cylinder 305 is provided with a jaw head 306 capable of performing a gripping operation. The bottom of the short arm end of the mounting plate 301 is provided with a spray gun mounting member 303, the outer side surface of the spray gun mounting member 303 is provided with a plasma spray gun 302, and the plasma spray gun 302 is arranged in a staggered manner relative to the mounting plate 301.

As shown in fig. 7, 8, 9 and 10, the main body of the rotary table 2 is a table mount 207, and a plurality of openings arranged in an array are provided on the top surface of the table mount 207. Corresponding rotating discs 214 are provided at the different openings. Symmetrical positioning columns 205 are arranged at the edge of the outer side of the bottom of the workbench mounting table 207, and the positioning columns 205 are abutted against the spraying platform 1 to finish alignment and fixation of the workbench mounting table 207. A rotation driving mechanism is provided inside the table mount 207. The rotary driving mechanism is connected to the bottom of the rotary disk 214, and the rotary driving mechanism can drive the rotary disk 214 to rotate. A clamping cylinder 213 is arranged on the top of the rotary disk 214, the clamping cylinder 213 is provided with a part clamping jaw 202, and the part clamping jaw 202 can clamp the artificial hip joint 6. The adjacent faces of the part clamping jaw 202 and the clamping jaw head 306 are symmetrical V-shaped groove structures, so that artificial hip joints 6 with different sizes can be clamped. An electromagnetic valve 208 is arranged in the workbench 207, and the electromagnetic valve 208 is connected with a positive pressure nozzle 206 and different clamping cylinders 213 on the side surface of the workbench 207. The positive pressure nozzle 206 is connected to an external air supply. Between adjacent part jaws 202 a shield 201 is provided, the bottom of the shield 201 being connected to the top surface of a table mount 207.

The rotary drive mechanism includes cooperating first and second bearing blocks 217 and 219, both of which are mounted in alignment on the housing 204 of the table mount 207. A transmission shaft 225 is arranged on the first bearing 226 of the first bearing seat 217 and the second bearing 224 of the second bearing 219 in a penetrating way, one end of the transmission shaft 225 is connected to an expansion sleeve 227 at the bottom of the rotating disc 214, and the rotating disc 214 is driven to rotate. A driven pulley 218 is provided on the drive shaft 225 at a position between the first bearing housing 217 and the second bearing housing 219, and the driven pulley 218 rotates in synchronization with the drive shaft 225. The transmission shaft 225 is further provided with an electro-pneumatic slip ring 215, and the electro-pneumatic slip ring 215 is located between the first bearing seat 217 and the rotating disc 214, and the electro-pneumatic slip ring 215 is fixedly connected to the outer cover 204 of the workbench mounting table 207 through a corresponding electro-pneumatic slip ring bracket 216. The gas-electricity slip ring 215 is used for transferring the gas pipe connecting the clamping cylinder 213 and the electromagnetic valve 208, and the gas pipe can be twisted synchronously when the gas pipe is convenient to rotate, so that the gas pipe is prevented from knotting to affect the use. One drive shaft 225 corresponds to one rotating disc 214.

A speed reducer bracket 223 is arranged at the center of the outer cover 204, a special speed reducer 209 is arranged on the speed reducer bracket 223, and a driving belt pulley 220 is arranged on the speed reducer 209. A corresponding tensioner bracket 222 is provided between two adjacent sets of drive shafts 225 at the center of the housing 204. The drive pulley 220 is only between the speed reducer support 223 and the tensioner support 222. The tensioning wheel support 222 is provided with a first tensioning wheel 221 on a side close to the speed reducer support 223. The tensioner bracket 222 is aligned with the speed reducer bracket 223, i.e., the subsequent first tensioner 221 may be in the same plane as the drive pulley 220, supporting a mating drive under the same belt. A plurality of tensioning wheel sub-brackets 212 are arranged between other adjacent transmission shafts 225 on the outer cover 204. The tensioning wheel sub-support 212 is provided with a second tensioning wheel 211 at one side close to the electromagnetic valve 208. The inner ring side of the driving belt 210 is orderly sleeved on the driving pulley 220 and the different driven pulleys 218, the outer ring side of the driving belt 210 is orderly abutted by the second tensioning pulley 211 and the first tensioning pulley 221, and the tensioning pulley realizes tensioning and pulling of the driving belt 210. The speed reducer 209 drives the driving belt pulley 220 to rotate, and drives the driven belt pulleys 218 to drive together by means of the transmission of the driving belt 210, the driven belt pulleys 218 are fixedly connected with the transmission shaft 225, the transmission shaft 225 is driven to synchronously rotate, and then the transmission shaft 225 drives the rotating disk 214 and parts such as the part clamping jaw 202 and the like mounted on the rotating disk 214 to rotate.

Preferably, each opening of the workbench mounting table 207 is provided with a dust cover 203, and the dust cover 203 covers the corresponding opening and the clamping cylinder 213 of the rotating disc 214 to isolate flying dust and paint in the spraying process.

More preferably, the outer side of each side jaw body of the part clamping jaw 202 is provided with an outer dust-proof plate 229, and an inner dust-proof plate 228 is provided between each side jaw body, so as to prevent fly ash and paint from entering the inside of the workbench 207 and affecting the normal operation of internal components such as the rotary driving mechanism.

Working principle: the long arm end of the mounting plate 301 is extended to the artificial hip joint 6 which is not sprayed on the material disc 4, the artificial hip joint 6 which is not sprayed is transferred to the part clamping jaw 202 on the rotary workbench 2 through the cooperation of the clamping jaw head 306 and the clamping jaw cylinder 305 and is clamped, the spraying mechanical arm 3 rotates the mounting plate 301, the plasma spray gun 302 is aligned with the artificial hip joint 6 to be sprayed, and spraying is carried out according to a specified programming route.

In the spraying process, the spraying mechanical arm 3 performs simple forward-backward, up-down, left-right translation movements, and in special cases, the mounting plate 301 can be rotated appropriately.

The internal rotation driving mechanism starts to operate, the speed reducer 209 drives the driving belt pulley 220 to rotate, the driven belt pulleys 218 are driven to drive together by the transmission of the driving belt 210, the driven belt pulleys 218 are fixedly connected with the transmission shaft 225, the transmission shaft 225 is driven to synchronously rotate, then the transmission shaft 225 drives the rotating disc 214, the part clamping jaw 202 and other parts mounted on the rotating disc 214 to rotate, finally the artificial hip joint 6 for spraying is driven to rotate, and the planned area is sprayed in place by matching with the plasma spray gun 302.

After the spraying is finished, the mounting plate 301 is rotated, the clamping jaw heads 306 are turned to the artificial hip joint 6, the artificial hip joint is transferred to the material disc 4 for standing, and the subsequent spraying of other artificial hip joints 6 is started. The spraying can be performed simultaneously for at most four artificial hip joints 6 as a cycle.

Automatic change mechanical equipment and carry out spraying operation, compare in manual spraying, on the spraying effect, the spraying is more even, and the effect is better, reduces artifical input, has improved the efficiency of spraying. In staff occupational health management, mechanical spraying effectively protects workers from dust, high temperature and noise, and optimizes the production environment.

Based on the automatic artificial hip joint spraying equipment, the corresponding automatic artificial hip joint 6 spraying method comprises the following steps:

s1, a material disc 4 is carried to a workbench 5 through a positioning hole 402 of the material disc 4 and a first positioning pin 501 and a second positioning pin 504 which correspond to each other on the workbench 5, and a sensor 503 senses a sensor sensing plate 406;

s2, arranging the artificial hip joints 6 which are not sprayed on the material tray 4 in sequence, and integrating and fixing the lower ends of the artificial hip joints 6 with the material grooves of the material tray 4;

s3, the spraying mechanical arm 3 is matched with the part clamping jaw 202 of the rotary workbench 2 through the clamping jaw head 306 of the spraying mechanical arm to transfer the artificial hip joint 6 from the material disc 4 to the rotary workbench 2;

s4, the spraying mechanical arm 3 automatically sprays the artificial hip joint 6 on the rotary workbench 2 by self-up-down, left-right, front-back translation, rotation of the mounting plate 301 and rotation of the rotary workbench 2 and matching with the plasma spray gun 302;

s5, after the spraying is finished, transferring the artificial hip joint 6 from the rotary workbench 2 back to the material disc 4, and taking the current material disc 4 out after the artificial hip joint 6 of the whole material disc 4 is sprayed;

s6, preparing a new material disc 4 and an artificial hip joint 6 which is not sprayed, and repeating the steps S1-S5.

In step S1, two positioning holes 402 at the bottom of the material tray 4 are aligned with and inserted into a first positioning pin 501 and a second positioning pin 504 at corresponding areas on the table 5, the foot support 403 is abutted on the plane of the table 5, a sensor 503 at the corresponding areas on the table 5 senses a sensor sensing plate 406 at the bottom of the material tray 4, it is confirmed that the material tray 4 is mounted on the table 5, and different material trays 4 are separated by a baffle 502.

In step S2, the non-sprayed artificial hip joints 6 are sequentially arranged and placed on the material tray 4 by the spraying mechanical arm 3 or the manual operation, and the lower ends of the artificial hip joints 6 are engaged and fixed with the material grooves of the material tray 4.

In step S3, the gripper head 306 of the spraying mechanical arm 3 grips the upper end of the artificial hip joint 6 that is not sprayed on the material tray 4, after rotating, the lower end of the artificial hip joint 6 is aligned to the part gripper 202 of the corresponding rotating table 2, the part gripper 202 grips the lower end of the artificial hip joint 6, the gripper head 306 loosens the upper end of the artificial hip joint 6, and the transfer of the artificial hip joint 6 is completed.

In step S4, the spraying mechanical arm 3 is matched with six degrees of freedom to realize self, mainly based on the up-down, left-right, front-back translation of the butt joint arm part, and the rotating disk 214 is rotated by matching with the internal rotation driving mechanism of the rotating table 2, and in special cases, the spraying mechanical arm 3 can rotate the mounting plate 301, and the artificial hip joint 6 is sprayed layer by layer according to the written program according to the route, so as to realize automatic operation. Fly ash and paint generated by spraying are blocked by related components, isolated outside the workbench mounting table 207, and prevented from affecting the normal operation of the equipment.

In step S5, the spraying mechanical arm 3 rotates the mounting plate 301 to align the clamping jaw head 306 with the sprayed artificial hip joint 6 on the part clamping jaw 202, and the clamping jaw head 306 removes the artificial hip joint 6 and clamps the same, and transfers the same back to the corresponding station on the material tray 4 through the rotation of the spraying mechanical arm 3.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (4)

1. A material dish for automizing spraying artificial hip joint, its characterized in that: comprising

An upper positioning plate (401) provided with a plurality of upper material tanks which are arranged in an array and are communicated, wherein the upper material tanks are of an inverted cone table structure;

the lower positioning plate (404) is connected with the upper positioning plate (401) through a connecting column (405) and provided with a plurality of lower material tanks which are arranged in an array and are communicated with each other; the artificial hip joint (6) simultaneously and fittingly passes through the corresponding upper material groove and the lower material groove;

and the foot supports (403) are arranged at four corners of the bottom of the lower positioning plate (404).

2. A tray according to claim 1, wherein: the bottom of the lower locating plate (404) is provided with an independent and non-through locating groove, the locating groove is positioned between two adjacent rows of lower material grooves, the locating groove is internally provided with symmetrically arranged and through locating holes (402), and a sensor sensing plate (406) protruding the locating groove is arranged in the locating groove and at the central position between the two locating holes (402).

3. A tray according to claim 2, wherein: the material disc (4) is horizontally arranged on the workbench (5).

4. A tray according to claim 3, wherein: a plurality of groups of first positioning pins (501) and second positioning pins (504) which are arranged in an array manner and a plurality of groups of baffles (502) which are arranged in an array manner are arranged on the top surface of the workbench (5), and a sensor (503) is arranged at the central position between each group of first positioning pins (501) and each group of second positioning pins (504);

the first locating pins (501) and the second locating pins (504) of the same group are respectively inserted into different locating holes (402) of the same lower locating plate (404), the sensor sensing plate (406) abuts against the sensor (503), and each group of baffles (502) separate adjacent material trays (4).

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