Safety type empty capsule marking and conveying device

Abstract

The invention relates to the technical field of conveying equipment, and discloses a safety type empty capsule marking and conveying device which comprises a conveying component. The conveying component is arranged on a workbench and comprises two fixed conveying plates which are symmetrical to each other, and the two fixed conveying plates are both fixed to the workbench; and a movable conveying plate is arranged between the two fixed conveying plates. Through cooperation of all the components, the movable conveying plate reciprocates, empty capsules in the conveying grooves are continuously conveyed to the next conveying groove, conveying of the empty capsules is achieved, the laser marking machine marks the empty capsules through the stop gap of movement of the empty capsules, and the production efficiency is improved. According to the device, the empty capsules can be intermittently fed, the empty capsules do not need to be vibrated, the capsules are not prone to being damaged, in addition, the device can ensure that the feeding speed is matched with the conveying speed through linkage of all the components, and stacking or supply interruption of the empty capsules is avoided.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, and in particular to a safe hollow capsule marking and conveying device. Background Technology

[0002] Empty capsules are common carriers for drugs and health products. They come in two types, hard and soft, and are mostly made of gelatin or plant gum. They are hollow cylinders formed by the snapping of a capsule body and a cap. They can mask the bitterness and off-taste of drugs, improve stability and bioavailability, and facilitate quantitative administration. They are widely used in the field of oral preparations.

[0003] Labeling empty capsules is a key process in drug identification, commonly using laser or ink marking technology to mark information such as the drug name, batch number, and expiration date on the capsule. This enables product anti-counterfeiting and traceability, standardizes production management, improves identification, and ensures medication safety, making it a crucial link in the quality control of oral preparations.

[0004] In existing technologies, hollow capsules are often marked and transported using a conveyor belt in conjunction with a laser marking machine. During the conveyor belt transport process, the capsules are prone to rotation, tipping, or uneven spacing. While the laser marking machine can adapt to capsules with positional deviations through a vision positioning system, it suffers from low efficiency due to the lack of capsule positioning limits.

[0005] In addition, in the existing technology, the vibratory feeder feeds materials by high-frequency vibration. If the amplitude is too large, the hollow capsules will collide or rub against the inner wall of the track repeatedly, causing the capsule wall to be dented or deformed. Summary of the Invention

[0006] The purpose of this invention is to provide a safe empty capsule marking and conveying device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: It includes a workbench and a conveying component. The conveying component is disposed on the workbench and includes two symmetrical fixed conveying plates, both fixed to the workbench. A movable conveying plate is disposed between the two fixed conveying plates. Both the fixed and movable conveying plates have transport grooves. One end of the movable conveying plate is provided with a material-grabbing claw. It also includes two sets of conveying drive components, respectively disposed at both ends of the conveying component. The conveying drive components are used to drive the movable conveying plate. Furthermore, it includes a feeding drive component, disposed on the first set of conveying drive components of the conveying component. It also includes a feeding component, disposed at one end of the conveying component. The feeding component includes a guide plate with multiple evenly distributed rollers. The feeding component also includes multiple sets of fixed trapezoidal blocks and movable trapezoidal blocks. A fixed material claw is provided at the end of the guide plate near the fixed conveying plate. Finally, it includes a storage bin, disposed on the feeding component.

[0008] Preferably, the conveying drive component includes a fixed plate, which is fixed to the worktable. A motor is fixed to the fixed plate, and a guide groove is provided on the fixed plate. A drive plate is fixed to the output end of the motor, and a guide hole is provided on the drive plate. A roller is slidably arranged in the guide hole and the guide groove. The roller is rotatably connected to a connecting plate. The upper end of the connecting plate is fixed to the movable conveying plate, and the lower end of the connecting plate is movably arranged on the fixed conveying plate. The fixed plate is fixed to the top of the worktable by bolts, and the motor is fixed to the side wall of the fixed plate by bolts. The motor is used to drive the drive plate to rotate. The guide groove, drive plate, and guide hole are used to guide the roller and constrain the movement trajectory of the connecting plate. The movement of the connecting plate will drive the movable conveying plate to move.

[0009] Preferably, the conveying drive component further includes a connecting plate, a first sliding member, and a second sliding member. The lower end of the connecting plate is mounted on the first sliding member, the first sliding member is mounted on the second sliding member, and the second sliding member is mounted on a mounting plate. The mounting plate is fixed to the bottom of the fixed conveying plate. The first sliding member is vertically arranged, and the second sliding member is horizontally arranged. The connecting plate can move vertically on the first sliding member and horizontally on the second sliding member under the drive of the roller. The upper end of the connecting plate is fixed to the movable conveying plate by bolts. The first and second sliding members provide bidirectional guide support for the connecting plate.

[0010] Preferably, the feeding drive component includes a pulley assembly and a reciprocating assembly. The pulley assembly drives the reciprocating assembly. The pulley assembly includes a first synchronous pulley, a second synchronous pulley, a synchronous belt, a rotating shaft, and an L-shaped plate. The first synchronous pulley is fixed to the output end of the motor, the second synchronous pulley is fixed to the rotating shaft, the synchronous belt is installed between the first and second synchronous pulleys, the rotating shaft is rotatably connected to the L-shaped plate, and the L-shaped plate is disposed on the storage box. The first synchronous pulley is fixed to the output shaft of the motor by a key connection, the second synchronous pulley is fixed to one end of the rotating shaft by a key connection, the synchronous belt is sleeved on the outside of the first and second synchronous pulleys, and the rotating shaft is rotatably connected to the L-shaped plate by a bearing. The first synchronous pulley, the second synchronous pulley, the synchronous belt, and the rotating shaft transmit the power of the motor to achieve synchronous linkage between feeding and conveying, ensuring that the feeding speed matches the conveying speed and avoiding capsule accumulation or supply interruption.

[0011] Preferably, the reciprocating assembly includes a positioning plate, a rotating plate, and a connecting frame. The positioning plate is fixed on a rotating shaft, the rotating plate is rotatably connected to the positioning plate, and the connecting frame is rotatably connected to the rotating plate. The connecting frame is fixed to the bottom of the movable trapezoidal block. The positioning plate can rotate under the drive of the rotating shaft. The rotation of the positioning plate will drive the rotating plate to rotate. At the same time, the rotating plate will also rotate at the bottom of the connecting frame. The rotating plate can also push the connecting frame to move up and down reciprocally. The up and down reciprocating motion of the connecting frame will drive the movable trapezoidal block to move up and down.

[0012] Preferably, the storage box includes a box body, the box body is provided with a storage cavity and an installation cavity, the rotating shaft is rotatably connected to the box body, one end of the rotating shaft extends into the installation cavity, the fixed trapezoidal block and the movable trapezoidal block are arranged in the installation cavity, the box body is fixed with a guide plate, the guide plate is used to guide the hollow capsule and prevent it from falling when it is lifted by the movable trapezoidal block, the box body is an integrated structure, the storage cavity and the installation cavity are separated by a partition, the rotating shaft is rotatably connected to the side wall of the box body through a bearing, and the end extends into the installation cavity, the storage cavity is used to store the capsules to be loaded, the upper end of the storage cavity is open, and the storage cavity can be replenished by adding a conveyor belt.

[0013] Preferably, the feeding drive component further includes a guide bar, which is disposed between the housing and the movable trapezoidal block. The positioning plate, rotating plate, and connecting frame are all disposed in the mounting cavity. The guide bar provides guidance and limit for the reciprocating motion of the movable trapezoidal block, constraining the movable trapezoidal block to move only in the vertical direction, avoiding deviation or shaking during movement, and reducing the frictional resistance during the movement of the movable trapezoidal block.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention uses a motor to drive a drive plate to rotate. The rotation of the drive plate drives rollers to move within the guide hole and guide groove through the guide hole. During this process, the connecting plate drives the movable conveyor plate to slide on the first and second sliding members, thereby causing the movable conveyor plate to reciprocate and continuously transport the hollow capsules in the transport groove to the next transport groove, thus realizing the transport of hollow capsules. The laser marking machine uses the pause interval of the hollow capsule movement to mark the hollow capsules. This device can intermittently feed hollow capsules, and the fixed conveyor plate, movable conveyor plate, and transport groove can limit the capsule position, making it difficult for the capsule position to deviate.

[0015] 2. When the motor of this invention is working, it will also drive the movable trapezoidal block to move up and down through the feeding drive component. When the movable trapezoidal block moves to the top, the inclined surfaces of the movable trapezoidal block and the fixed trapezoidal block are aligned, thereby gradually moving the hollow capsule upward until the capsule falls onto the roller. The capsule slides on the roller to the fixed claw and is finally picked up by the reciprocating movable conveyor plate and picking claw, thus realizing feeding. There is no need to vibrate the hollow capsule, which is not easy to damage the capsule. In addition, the device can ensure that the feeding speed matches the conveying speed through the linkage of various components, avoiding the accumulation or interruption of hollow capsule supply. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of a safe hollow capsule marking and conveying device according to the present invention; Figure 2 This is a front view of the structure of a safety-type hollow capsule marking and conveying device according to the present invention; Figure 3 This is a top view of the safety-type hollow capsule marking and conveying device of the present invention; Figure 4 This is a schematic diagram of the reciprocating mechanism of a safe hollow capsule marking and conveying device according to the present invention; Figure 5 This is a schematic diagram of the fixed conveyor plate and the movable conveyor plate of a safety-type hollow capsule marking and conveying device according to the present invention; Figure 6 This is a schematic diagram of the drive component of a safety-type hollow capsule marking and conveying device according to the present invention; Figure 7 This is a schematic diagram of the feeding component of a safety-type hollow capsule marking and conveying device according to the present invention; Figure 8 This is a schematic diagram of the storage box of a safe hollow capsule marking and conveying device according to the present invention; Figure 9 This is a schematic diagram of the rotating plate and connecting frame of a safety-type hollow capsule marking and conveying device according to the present invention; Figure 10This is a schematic diagram of the guide plate of a safe hollow capsule marking and conveying device according to the present invention.

[0017] In the picture: 1. Workbench; 2. Conveying components; 201. Fixed conveyor plate; 202. Movable conveyor plate; 203. Transport trough; 204. Picking claw; 3. Conveying drive components; 301. Fixing plate; 302. Motor; 303. Guide groove; 304. Drive plate; 305. Guide hole; 306. Roller; 307. Connecting plate; 308. First sliding member; 309. Second sliding member; 310. Mounting plate; 4. Feeding drive components; 401. First synchronous pulley; 402. Second synchronous pulley; 403. Synchronous belt; 404. Rotating shaft; 405. L-shaped plate; 406. Positioning plate; 407. Rotating plate; 408. Connecting frame; 409. Guide bar; 5. Feeding components; 501. Guide plate; 502. Roller; 503. Fixed trapezoidal block; 504. Movable trapezoidal block; 505. Fixed claw; 6. Storage bin; 601. Box body; 602. Storage cavity; 603. Mounting cavity; 604. Guide plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] This invention provides, for example Figures 1 to 10 The safety-type hollow capsule marking and conveying device shown includes a workbench 1 and a conveying component 2. The conveying component 2 is set on the workbench 1 and includes two symmetrical fixed conveying plates 201. Both fixed conveying plates 201 are fixed on the workbench 1, and a movable conveying plate 202 is arranged between the two fixed conveying plates 201. Both the fixed conveying plates 201 and the movable conveying plate 202 are provided with a transport groove 203, and a picking claw 204 is provided at one end of the movable conveying plate 202.

[0020] Please see Figure 3 , Figure 4 and Figure 5It also includes two sets of conveying drive components 3, which are respectively set at both ends of the conveying component 2. The conveying drive components 3 are used to drive the movable conveying plate 202 to move. The conveying drive component 3 includes a fixed plate 301, which is fixed on the worktable 1. A motor 302 is fixed on the fixed plate 301. A guide groove 303 is opened on the fixed plate 301. A drive plate 304 is fixed at the output end of the motor 302. A guide hole 305 is opened on the drive plate 304. A roller 306 is slidably arranged in the guide hole 305 and the guide groove 303. The roller 306 is rotatably connected to the connecting plate 307. The upper end of the connecting plate 307 is fixed to the movable conveying plate 202, and the lower end of the connecting plate 307 is movably arranged on the fixed conveying plate 201.

[0021] The fixed plate 301 is fixed to the top of the workbench 1 by bolts, and the motor 302 is fixed to the side wall of the fixed plate 301 by bolts. The motor 302 is used to drive the drive plate 304 to rotate. The guide groove 303, drive plate 304 and guide hole 305 are used to guide the roller 306 and constrain the movement trajectory of the connecting plate 307. The movement of the connecting plate 307 will drive the movable conveyor plate 202 to move.

[0022] The conveying drive component 3 also includes a connecting plate 307, a first sliding member 308, and a second sliding member 309. The lower end of the connecting plate 307 is mounted on the first sliding member 308, the first sliding member 308 is mounted on the second sliding member 309, and the second sliding member 309 is mounted on a mounting plate 310. The mounting plate 310 is fixed to the bottom of the fixed conveying plate 201. The first sliding member 308 is vertically arranged, and the second sliding member 309 is horizontally arranged. The connecting plate 307 can move vertically on the first sliding member 308 and horizontally on the second sliding member 309 under the drive of the roller 306. The upper end of the connecting plate 307 is fixed to the movable conveying plate 202 by bolts. The first sliding member 308 and the second sliding member 309 provide bidirectional guide support for the connecting plate 307.

[0023] Please see Figure 6 , Figure 8 and Figure 9 It also includes a feeding drive component 4, which is set on the first group of conveying drive components 3 of the conveying component 2. The feeding drive component 4 includes a pulley assembly and a reciprocating assembly. The pulley assembly is used to drive the reciprocating assembly. The pulley assembly includes a first synchronous pulley 401, a second synchronous pulley 402, a synchronous belt 403, a rotating shaft 404, and an L-shaped plate 405. The first synchronous pulley 401 is fixed to the output end of the motor 302, the second synchronous pulley 402 is fixed on the rotating shaft 404, the synchronous belt 403 is installed between the first synchronous pulley 401 and the second synchronous pulley 402, and the rotating shaft 404 is rotatably connected to the L-shaped plate 405. The L-shaped plate 405 is set on the storage box 6.

[0024] The first synchronous pulley 401 is fixed to the output shaft of the motor 302 via a key connection, and the second synchronous pulley 402 is fixed to one end of the rotating shaft 404 via a key connection. The synchronous belt 403 is sleeved on the outside of the first synchronous pulley 401 and the second synchronous pulley 402. The rotating shaft 404 is rotatably connected to the L-shaped plate 405 via bearings. The first synchronous pulley 401, the second synchronous pulley 402, the synchronous belt 403, and the rotating shaft 404 transmit the power of the motor 302 to achieve synchronous linkage between feeding and conveying, ensuring that the feeding speed matches the conveying speed and avoiding capsule accumulation or supply interruption.

[0025] The reciprocating assembly includes a positioning plate 406, a rotating plate 407, and a connecting frame 408. The positioning plate 406 is fixed on the rotating shaft 404, the rotating plate 407 is rotatably connected to the positioning plate 406, and the connecting frame 408 is rotatably connected to the rotating plate 407. The connecting frame 408 is fixed to the bottom of the movable trapezoidal block 504. The positioning plate 406 can rotate under the drive of the rotating shaft 404. The rotation of the positioning plate 406 will drive the rotating plate 407 to rotate. At the same time, the rotating plate 407 will also rotate at the bottom of the connecting frame 408. The rotating plate 407 can also push the connecting frame 408 to move up and down reciprocally. The up and down reciprocating motion of the connecting frame 408 will drive the movable trapezoidal block 504 to move up and down.

[0026] The feeding drive component 4 also includes a guide bar 409, which is disposed between the housing 601 and the movable trapezoidal block 504. The positioning plate 406, the rotating plate 407, and the connecting frame 408 are all disposed in the mounting cavity 603. The guide bar 409 provides guidance and limit for the reciprocating motion of the movable trapezoidal block 504, constraining the movable trapezoidal block 504 to move only in the vertical direction, avoiding deviation or shaking during movement, and reducing the frictional resistance during the movement of the movable trapezoidal block 504.

[0027] Please see Figure 7 , Figure 8 , Figure 9 and Figure 10 It also includes a feeding component 5, which is located at one end of the conveying component 2. The feeding component 5 includes a guide plate 501, on which multiple evenly distributed rollers 502 are provided. The feeding component 5 also includes multiple sets of fixed trapezoidal blocks 503 and movable trapezoidal blocks 504. A fixed claw 505 is provided at the end of the guide plate 501 near the fixed conveying plate 201.

[0028] Please see Figure 7 , Figure 8 and Figure 9It also includes a storage box 6, which is mounted on the feeding component 5. The storage box 6 includes a box body 601, a storage cavity 602 and a mounting cavity 603 are provided inside the box body 601, a rotating shaft 404 is rotatably connected to the box body 601, and one end of the rotating shaft 404 extends into the mounting cavity 603. A fixed trapezoidal block 503 and a movable trapezoidal block 504 are provided in the mounting cavity 603. A guide plate 604 is fixed on the box body 601. The guide plate 604 is used to guide the hollow capsules and prevent them from falling when lifted by the movable trapezoidal block 504. The box body 601 is an integrated structure. The storage cavity 602 and the mounting cavity 603 are separated by a partition. The rotating shaft 404 is rotatably connected to the side wall of the box body 601 through a bearing, and its end extends into the interior of the mounting cavity 603. The storage cavity 602 is used to store capsules to be fed. The upper end of the storage cavity 602 is open, and the storage cavity 602 can be replenished by adding a conveyor belt.

[0029] Working principle: The motor 302 drives the drive plate 304 to rotate. The rotation of the drive plate 304 drives the roller 306 to move within the guide hole 305 and the guide groove 303 through the guide hole 305. During the above process, the connecting plate 307 drives the movable conveyor plate 202 to slide on the first sliding member 308 and the second sliding member 309, thereby causing the movable conveyor plate 202 to reciprocate and continuously transport the hollow capsules in the transport groove 203 to the next transport groove 203, realizing the transport of hollow capsules. The laser marking machine uses the pause interval of the hollow capsule movement to mark the hollow capsules. This device can feed hollow capsules intermittently, and the fixed conveyor plate 201, movable conveyor plate 202, and transport groove 203 can limit the capsule position, making it difficult for the capsule position to deviate. To improve the limiting effect, baffles can be set on the sides of the two conveyor plates 201 to further limit the capsule position.

[0030] When motor 302 is working, the first motor 302 will drive the first synchronous pulley 401 to rotate. The first synchronous pulley 401 drives the second synchronous pulley 402 and the rotating shaft 404 to rotate through the synchronous belt 403. The rotating shaft 404 drives the positioning plate 406 to rotate. The rotation of the positioning plate 406 will drive the rotating plate 407 to rotate at the bottom of the connecting frame 408. The connecting frame 408 will push the movable trapezoidal block 504 to move up and down on the housing 601. When the movable trapezoidal block 504 moves to the top, the inclined surfaces of the movable trapezoidal block 504 and the fixed trapezoidal block 503 are aligned, thereby gradually moving the hollow capsule upward until the capsule falls onto the roller 502. The capsule slides on the roller 502 to the fixed claw 505 and is finally picked up by the reciprocating movable conveyor plate 202 and the picking claw 204, thus realizing the feeding. This device does not require vibration of the hollow capsule and is not easy to damage the capsule.

[0031] In addition, the device, through the combined use of conveying component 2, conveying drive component 3, feeding drive component 4, feeding component 5, and storage box 6, can ensure that the feeding speed of hollow capsules matches the conveying speed, thus avoiding the accumulation or interruption of hollow capsule supply.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safe empty capsule marking and conveying device, comprising a worktable (1), characterized in that: It also includes a conveying component (2), which is disposed on the worktable (1); The conveying component (2) includes two symmetrical fixed conveying plates (201), both of which are fixed on the workbench (1). A movable conveying plate (202) is provided between the two fixed conveying plates (201). Both the fixed conveying plate (201) and the movable conveying plate (202) are provided with a transport groove (203). One end of the movable conveying plate (202) is provided with a picking claw (204). It also includes two sets of conveying drive components (3), which are respectively disposed at both ends of the conveying component (2). The conveying drive components (3) are used to drive the movable conveying plate (202) to move. It also includes a feeding drive component (4), which is disposed on the first group of conveying drive components (3) of the conveying component (2); It also includes a feeding component (5), which is disposed at one end of the conveying component (2); The feeding component (5) includes a guide plate (501), on which a plurality of evenly distributed rollers (502) are provided. The feeding component (5) also includes a plurality of fixed trapezoidal blocks (503) and movable trapezoidal blocks (504). A fixed claw (505) is provided at one end of the guide plate (501) near the fixed conveyor plate (201). It also includes a storage bin (6), which is mounted on the feeding component (5).

2. The safety-type hollow capsule marking and conveying device according to claim 1, characterized in that: The conveying drive component (3) includes a fixed plate (301), which is fixed on the workbench (1). A motor (302) is fixed on the fixed plate (301). A guide groove (303) is provided on the fixed plate (301). A drive plate (304) is fixed at the output end of the motor (302). A guide hole (305) is provided on the drive plate (304). A roller (306) is slidably arranged in the guide hole (305) and the guide groove (303). The roller (306) is rotatably connected to a connecting plate (307). The upper end of the connecting plate (307) is fixed to the movable conveying plate (202), and the lower end of the connecting plate (307) is movably arranged on the fixed conveying plate (201).

3. The safety-type hollow capsule marking and conveying device according to claim 2, characterized in that: The conveying drive component (3) further includes a connecting plate (307), a first sliding member (308), and a second sliding member (309). The lower end of the connecting plate (307) is mounted on the first sliding member (308), the first sliding member (308) is mounted on the second sliding member (309), and the second sliding member (309) is mounted on the mounting plate (310). The mounting plate (310) is fixed to the bottom of the fixed conveying plate (201). The first sliding member (308) is vertically arranged, and the second sliding member (309) is horizontally arranged.

4. The safety-type hollow capsule marking and conveying device according to claim 2, characterized in that: The feeding drive component (4) includes a pulley assembly and a reciprocating assembly, wherein the pulley assembly is used to drive the reciprocating assembly.

5. A safe hollow capsule marking and conveying device according to claim 4, characterized in that: The pulley assembly includes a first synchronous pulley (401), a second synchronous pulley (402), a synchronous belt (403), a rotating shaft (404), and an L-shaped plate (405). The first synchronous pulley (401) is fixed to the output end of the motor (302), the second synchronous pulley (402) is fixed to the rotating shaft (404), the synchronous belt (403) is installed between the first synchronous pulley (401) and the second synchronous pulley (402), the rotating shaft (404) is rotatably connected to the L-shaped plate (405), and the L-shaped plate (405) is set on the storage box (6).

6. The safety-type hollow capsule marking and conveying device according to claim 4, characterized in that: The reciprocating assembly includes a positioning plate (406), a rotating plate (407), and a connecting frame (408). The positioning plate (406) is fixed on the rotating shaft (404), the rotating plate (407) is rotatably connected to the positioning plate (406), and the connecting frame (408) is rotatably connected to the rotating plate (407). The connecting frame (408) is fixed to the bottom of the movable trapezoidal block (504).

7. A safe hollow capsule marking and conveying device according to claim 6, characterized in that: The storage box (6) includes a box body (601), a storage cavity (602) and an installation cavity (603) are provided inside the box body (601), a rotating shaft (404) is rotatably connected to the box body (601), one end of the rotating shaft (404) extends into the installation cavity (603), a fixed trapezoidal block (503) and a movable trapezoidal block (504) are provided in the installation cavity (603), and a guide plate (604) is fixed on the box body (601).

8. A safe hollow capsule marking and conveying device according to claim 7, characterized in that: The feeding drive component (4) also includes a guide bar (409), which is disposed between the housing (601) and the movable trapezoidal block (504). The positioning plate (406), the rotating plate (407), and the connecting frame (408) are all disposed in the mounting cavity (603).

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