Harvester transporting and packaging mechanism

Abstract

The utility model discloses a harvester transporting and packaging mechanism, which relates to the field of harvesters and comprises a harvester, first driving rods are mounted on two sides of the harvester, clamping belts are sleeved on the outer walls of the two groups of first driving rods, a twisting belt is sleeved on the outer wall of a second driving rod, a conveying belt is mounted on one side of the twisting belt, and a conveying belt is mounted on the other side of the conveying belt. And a bundling assembly is mounted on one side of the moving plate. According to the harvester, Chinese chives are conveyed to the conveying belt through the clamping belt and the twisting belt, the conveying belt conveys the Chinese chives into the box body, the sensor arranged in the box body detects the load bearing of the box door, when the Chinese chives in the box body reach the quality standard, the Chinese chives fall onto the gripper, and then the gripper moves to the top of the moving plate; and an extrusion column pair downwards extrudes an adhesive tape, so that the adhesive tape and a binding film bind Chinese chives, the harvested Chinese chives do not need to be tidied, weighed, bound and the like by workers any more, and the Chinese chives harvesting and packaging speed is greatly increased.

Description

Technical Field

[0001] This utility model relates to the field of harvesters, specifically a harvester transportation and packaging mechanism. Background Technology

[0002] With the continuous acceleration of agricultural modernization, the country attaches increasing importance to the development of agricultural mechanization and has successively introduced a number of policies to encourage the research and development and promotion of agricultural machinery. As a widely planted vegetable in my country, leeks have formed large-scale planting areas throughout the country due to their strong environmental adaptability. However, due to factors such as regional planting habits and economic development levels, there are significant differences in leek harvesting methods in different regions, covering various modes such as manual harvesting, semi-automatic harvesting, and automated harvesting. In order to break through the efficiency bottleneck of traditional harvesting methods and improve the modernization level of leek production, leek harvesters have emerged and have gradually become an important piece of equipment in large-scale leek planting bases.

[0003] Currently, mainstream leek harvesters use a cutting device at the front end to neatly cut the leeks during operation. Then, a conveying mechanism is used to orderly stack the harvested leeks into the storage box built into the harvester. This storage box has a certain capacity design and can continuously store the harvested leeks for a certain period of time.

[0004] After the leek harvester completes the harvesting operation in the designated area, the subsequent processing still relies heavily on manual labor. Operators need to take out the leeks from the storage box one by one and sort them, then accurately weigh them using weighing equipment, and finally bundle and package them according to the standard quality required by the market to facilitate subsequent transportation and sales. However, this manual packaging mode has obvious drawbacks. Not only is the labor intensity high and the labor cost high, but the packaging efficiency is also low, making it difficult to meet the rapid processing needs after large-scale leek harvesting. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a harvester transportation and packaging mechanism to solve the technical problems of high labor intensity, high labor costs and low packaging efficiency in the manual packaging of leeks, which makes it difficult to meet the needs of rapid processing after large-scale leek harvesting.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a harvester transportation and packaging mechanism, comprising a harvester, four sets of first drive rods are installed on both sides of one end of the harvester, clamping belts are sleeved on the outer walls of the two sets of first drive rods, a second drive rod is provided on one side of the clamping belt, a torsion belt is sleeved on the outer wall of the second drive rod, servo motors are installed at the ends of the first and second drive rods, a conveyor belt is installed on one side of the torsion belt, drive rollers are provided at both ends of the inner wall of the conveyor belt, a first motor is installed at the end of the drive rollers, a box is provided at the bottom of one end of the conveyor belt, two sets of grippers are installed at the bottom of the box, a moving plate is provided on one side of the grippers, a cutting blade is provided on one side of the moving plate, and a binding assembly is installed on one side of the moving plate.

[0007] By adopting the above technical solution, the drawbacks of manual packaging of chives, such as high labor intensity, high labor costs, and low packaging efficiency, are solved, making it difficult to meet the needs of rapid processing after large-scale chive harvesting. The harvester transfers the harvested chives to a conveyor belt via clamping and twisting belts. The conveyor belt transports the chives into a box. Sensors installed inside the box detect the load-bearing capacity of the box door. When the chives inside the box reach the quality standard, they fall onto the grabber. The grabber then moves to the top of the moving plate, where the squeezing column squeezes the tape downwards, binding the chives with the tape and binding film. This eliminates the need for manual sorting, weighing, and binding of the harvested chives, greatly accelerating the chive harvesting and packaging speed.

[0008] The present invention is further configured such that: a support head is provided on both sides of one end of the harvester; a harvester is installed on one side of the support head; a rotating blade is fixed at the bottom of the harvester; a rotating rod is connected to the top of the harvester; and a fourth motor is installed at the end of the rotating rod.

[0009] Preferably, the two sets of supporting heads at the front of the harvester move on both sides of the chives, gathering the messy leaves of the chives vertically towards the middle. Then, the chives pass through the supporting heads to the middle of the two clamping belts, and the rotating blades at the bottom of the harvester harvest the chives.

[0010] The present invention is further configured such that the rotation angle at both ends of the torsion belt is 90 degrees, and the two ends of the torsion belt are respectively connected to the first drive rod and the second drive rod.

[0011] Preferably, the harvested chives are clamped and then moved to the twisting belt, which allows the chives to rotate 90 degrees clockwise, changing them from a vertical to a horizontal position. The end of the clamping belt and the beginning of the twisting belt are connected to the outer wall of the same first drive rod to prevent the cut chives from falling off.

[0012] The present invention is further configured such that a vibrating plate is provided at the bottom of the conveyor belt, a vibrating motor is installed at the bottom of the vibrating plate, and two sets of first springs are provided at the bottom of the vibrating plate.

[0013] Preferably, the vibratory motor drives the top area of ​​the conveyor belt to vibrate slightly through a vibrating plate.

[0014] The present invention is further configured such that multiple sets of partitions are fixed to the outer wall of the conveyor belt, a baffle is provided at one end of the conveyor belt, and the conveyor belt is inclined.

[0015] Preferably, due to the local vibration at the top of the conveyor belt and the inclined setting of the conveyor belt, the chives that fall to the top of the conveyor belt can slide evenly to the bottom of the inclined wall of the conveyor belt, so that the chives at the top of the conveyor belt can be neatly stacked at the roots.

[0016] The present invention is further configured such that the bottom of the box body is provided with two sets of boxes, and a sensor is installed at one end of each box door.

[0017] Preferably, after the chives fall into the box, their weight acts on the sensor on the box door. When the sensor detects that the pressure value on the box door reaches a certain weight, the box door opens automatically.

[0018] The present invention is further configured such that a drive block is connected to the bottom of the gripper, a lead screw is provided inside the drive block, and a third motor is installed at the end of the lead screw.

[0019] Preferably, the chives fall into the two sets of grippers at the bottom of the box. The third motor drives the drive block along with the grippers to move towards the bundling rocker arm via the lead screw. Since the tape inside the fixed plate is connected to the bundling film inside the moving plate through the upper surface of the extrusion column, the tape and bundling film wrap the chives on the grippers during the movement of the grippers.

[0020] The present invention is further configured such that the binding assembly includes a fixing plate, connecting rods are fixed on both sides of the outer wall of the fixing plate, a binding rocker arm is sleeved on the outer wall of the connecting rod, two sets of compression columns are provided at one end of the binding rocker arm, a connecting plate is connected to the top of the binding rocker arm, a drive plate is movably installed at one end of the connecting plate, and a second motor is provided at the end of the drive plate.

[0021] Preferably, when the hand-held chives are moved to a position directly above the flat plate, the second motor drives the drive plate to rotate. During the rotation of the drive plate, the drive plate pulls the connecting plate, causing the bundling rocker arm to rotate at a certain angle around the connecting rod on the outer wall of the fixed plate. The extrusion column at the end of the bundling rocker arm extrudes the tape downward.

[0022] The present invention is further configured such that four sets of second springs are installed at the bottom of the movable plate, a platform is fixed at the top of the movable plate, a through hole is opened on one side of the platform, a binding film is placed inside the movable plate, and tape is installed inside the fixed plate.

[0023] Preferably, during the descent of the extrusion column, the moving plate is extruded downwards and compressed. As the moving plate moves downwards, it compresses and contracts the second spring. When the moving plate descends to its lowest position, the cutting blade is exposed through the through hole on one side of the platform and cuts the tape, thereby completing the bundling operation of the chives.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model solves the problems of high labor intensity, high labor costs, and low packaging efficiency in the manual packaging of chives by setting up a harvester, conveyor belt, box, hand gripper, and binding assembly. It also addresses the difficulty in meeting the rapid processing needs after large-scale chive harvesting. The harvester transfers the harvested chives to the conveyor belt via clamping and twisting belts. The conveyor belt then transports the chives into the box. Sensors inside the box detect the load-bearing capacity of the box door. When the chives inside the box reach the quality standard, they fall onto the hand gripper. The hand gripper then moves to the top of the moving plate, and the squeezing column squeezes the tape downwards, binding the chives with the tape and binding film. This eliminates the need for manual sorting, weighing, and binding of the harvested chives, greatly accelerating the chive harvesting and packaging speed.

[0026] 2. This utility model solves the problem of uneven packaging of harvested chives by setting up a conveyor belt, baffle, partition, vibrating motor, vibrating plate and first spring. During the transportation of chives by the conveyor belt, the vibrating motor at the bottom of the conveyor belt drives the vibrating plate to shake slightly, causing the top area of ​​the conveyor belt to shake. Under the combined action of the conveyor belt with a certain slope and the baffle at one end of the conveyor belt, the chives that fall to the top of the conveyor belt can slide evenly to the bottom of the inclined wall of the conveyor belt, so that the chives at the top of the conveyor belt can be stacked neatly at the roots. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0028] Figure 2 This is a side view of the harvester of this utility model;

[0029] Figure 3 This is a diagram showing the internal structure of the conveyor belt of this utility model;

[0030] Figure 4 This is a structural diagram of the box body of this utility model;

[0031] Figure 5 This is a schematic diagram of the overall binding assembly of this utility model;

[0032] Figure 6 For the present utility model Figure 1 A magnified view of Figure A.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Harvester; 101. Handling head; 2. Clamping belt; 201. First drive rod; 202. Torsion belt; 203. Second drive rod; 204. Servo motor; 3. Conveyor belt; 301. Drive roller; 302. First motor; 303. Partition; 304. Vibrating plate; 305. First spring; 306. Vibrating motor; 307. Baffle; 4. Housing; 401. Housing door; 402. Sensor; 5. Bundling rocker arm; 50 1. Extrusion column; 502. Connecting plate; 503. Drive plate; 504. Second motor; 6. Fixing plate; 601. Adhesive tape; 602. Connecting rod; 7. Hand gripper; 701. Drive block; 702. Lead screw; 703. Third motor; 8. Moving plate; 801. Second spring; 802. Flat plate; 803. Through hole; 804. Cutting blade; 9. Harvester; 901. Rotating blade; 902. Rotating rod; 903. Fourth motor. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] Please see Figure 1 — Figure 6The system includes a harvester 1. Four sets of first drive rods 201 are installed on both sides of one end of the harvester 1. Clamping bands 2 are fitted onto the outer walls of the two sets of first drive rods 201. A second drive rod 203 is installed on one side of the clamping band 2. A torsion band 202 is fitted onto the outer wall of the second drive rod 203. Servo motors 204 are installed at the ends of both the first drive rods 201 and the second drive rods 203. A conveyor belt 3 is installed on one side of the torsion band 202. Drive rollers 301 are installed at both ends of the inner wall of the conveyor belt 3. A first motor 302 is installed at the end of each drive roller 301. A housing 4 is installed at the bottom of one end of the conveyor belt 3. Two sets of grippers 7 are installed at the bottom of the housing 4. A moving plate 8 is installed on one side of each gripper 7. A cutting blade 804 is installed on one side of each moving plate 8. A binding assembly is installed on one side of each moving plate 8. The traditional manual packaging method for chives suffers from drawbacks such as high labor intensity, high labor costs, and low packaging efficiency, making it difficult to meet the rapid processing needs after large-scale chive harvesting. Harvester 1 transfers the harvested chives to conveyor belt 3 via clamping belt 2 and twisting belt 202. Conveyor belt 3 then transports the chives into box 4. Sensor 402 inside box 4 detects the load-bearing capacity of box door 401. When the chives inside box 4 meet the quality standards, they fall onto grabber 7. Grabber 7 then moves to the top of moving plate 8, where squeezing column 501 applies downward squeezing tape 601, binding the chives with the tape and binding film. This eliminates the need for manual sorting, weighing, and binding of the harvested chives, significantly accelerating the chive harvesting and packaging process.

[0038] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 6 The harvester 1 has two supporting heads 101 on both sides at one end. A harvester 9 is installed on one side of the supporting head 101. A rotating blade 901 is fixed at the bottom of the harvester 9. A rotating rod 902 is connected to the top of the harvester 9. A fourth motor 903 is installed at the end of the rotating rod 902. The two sets of supporting heads 101 at the front end of the harvester 1 move on both sides of the chives, gathering the messy leaves of the chives vertically towards the middle. Then the chives reach the middle of the two clamping bands 2 through the supporting heads 101. The rotating blade 901 at the bottom of the harvester 9 harvests the chives.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 2 The rotation angle at both ends of the twisting belt 202 is 90 degrees, and the two ends of the twisting belt 202 are respectively connected to the first drive rod 201 and the second drive rod 203. The harvested chives enter the twisting belt 202 through the clamping belt 2, which can make the chives rotate 90 degrees clockwise, that is, change from a vertical state to a horizontal state. The end of the clamping belt 2 and the beginning of the twisting belt 202 are connected to the outer wall of the same first drive rod 201 to prevent the cut chives from falling.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 A vibrating plate 304 is provided at the bottom of the conveyor belt 3, a vibrating motor 306 is installed at the bottom of the vibrating plate 304, and two sets of first springs 305 are provided at the bottom of the vibrating plate 304. The vibrating motor 306 drives the top area of ​​the conveyor belt 3 to vibrate slightly through the vibrating plate 304.

[0041] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 3 Multiple sets of partitions 303 are fixed to the outer wall of the conveyor belt 3. A baffle 307 is provided at one end of the conveyor belt 3. The conveyor belt 3 is inclined. Due to the local vibration at the top of the conveyor belt 3 and the inclined setting of the conveyor belt 3, the chives that fall to the top of the conveyor belt 3 can slide evenly to the bottom of the inclined wall of the conveyor belt 3, so that the chives at the top of the conveyor belt 3 can be neatly stacked at the roots.

[0042] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The bottom of the box 4 is equipped with two sets of doors 401. A sensor 402 is installed at one end of the door 401. After the chives fall into the box 4, the weight of the chives acts on the sensor 402 of the door 401. When the sensor 402 detects that the pressure value on the door 401 reaches a certain weight, the door 401 opens automatically.

[0043] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 The bottom of the gripper 7 is connected to a drive block 701. The drive block 701 has a lead screw 702 inside. The end of the lead screw 702 is equipped with a third motor 703. The chives fall into the two sets of grippers 7 at the bottom of the box 4. The third motor 703 drives the drive block 701 and the gripper 7 together to move towards the binding rocker arm 5 through the lead screw 702. Since the tape 601 inside the fixed plate 6 is connected to the binding film inside the moving plate 8 through the upper surface of the extrusion column 501, the tape 601 and the binding film wrap the chives on the gripper 7 during the movement of the gripper 7.

[0044] For details regarding the above embodiments, please refer to [link / reference]. Figure 4The bundling assembly includes a fixing plate 6, with connecting rods 602 fixed on both sides of the outer wall of the fixing plate 6. A bundling rocker arm 5 is sleeved on the outer wall of the connecting rods 602. Two sets of extrusion columns 501 are provided at one end of the bundling rocker arm 5. A connecting plate 502 is connected to the top of the bundling rocker arm 5. A drive plate 503 is movably installed at one end of the connecting plate 502. A second motor 504 is provided at the end of the drive plate 503. When the grabber 7 carrying the chives moves to the position directly above the flat plate 8, the second motor 504 drives the drive plate 503 to rotate. During the rotation of the drive plate 503, the drive plate 503 pulls the connecting plate 502, causing the bundling rocker arm 5 to rotate at a certain angle with the connecting rods 602 on the outer wall of the fixing plate 6 as the center. The extrusion columns 501 at the end of the bundling rocker arm 5 extrude the tape 601 downward.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 and Figure 5 Four sets of second springs 801 are installed at the bottom of the movable plate 8, and a platform 802 is fixed at the top of the movable plate 8. A through hole 803 is opened on one side of the platform 802. A binding film is placed inside the movable plate 8, and tape 601 is installed inside the fixed plate 6. During the descent of the extrusion column 501, the movable plate 8 is squeezed and moved downward. During the downward movement of the movable plate 8, the second springs 801 are squeezed and contracted. When the movable plate 8 descends to the lowest position, the cutting blade 804 is exposed through the through hole 803 on one side of the platform 802 and cuts the tape 601, thereby completing the binding operation of the chives.

[0046] In practical operation, the harvester 1 approaches the row of chives. Two sets of supporting heads 101 at the front of the harvester 1 move on both sides of the chives, gathering the messy leaves of the chives vertically towards the center. Then, the chives pass through the supporting heads 101 and reach the middle of the two clamping belts 2. Each set of first drive rods 201 and second drive rods 203 has a servo motor 204 installed at one end. The operation of the multiple sets of servo motors 204 is controlled by the control system installed inside the harvester 1, so that the first drive rods 201 and second drive rods 203 drive the clamping belts 2 and the torsion belts 202 to rotate respectively. When the chives reach the front of the clamping belts 2, the clamping belts 2 on both sides of the chives clamp the chives. The fourth motor 903 drives the rotating blades 901 set inside the harvester 9 to rotate through the rotating rod 902, so that the rotating blades 901 harvest the chives between the two sets of clamping belts 2.

[0047] The harvested chives pass through two sets of clamping belts 2 and then into two sets of twisting belts 202. The two sets of twisting belts 202 can rotate the chives 90° clockwise, that is, change them from a vertical state to a horizontal state. When the chives are transported to their end by the twisting belts 202, they fall onto the conveyor belt 3 with baffles 307. The two sets of drive rollers 301 installed inside the conveyor belt 3 drive the conveyor belt 3 to rotate through the first motor 302 connected to its end. During the process of the conveyor belt 3 transporting the chives, the vibrating motor 306 at the bottom of the conveyor belt 3 drives the vibrating plate 304 to vibrate slightly, causing the top area of ​​the conveyor belt 3 to vibrate. Under the combined action of the conveyor belt 3 with a certain slope and the baffle 307 at one end of the conveyor belt 3, the chives that fall to the top of the conveyor belt 3 can slide evenly to the bottom of the inclined wall of the conveyor belt 3, so that the chives at the top of the conveyor belt 3 can be neatly stacked at the roots.

[0048] When the chives are transported to the end of conveyor belt 3, they fall into the box 4. The weight of the chives acts on the sensor 402 of the box door 401. When the sensor 402 detects that the pressure on the box door 401 has reached a certain weight, the box door 401 opens, and the chives fall into the two sets of grippers 7 at the bottom of the box 4. The third motor 703 drives the drive block 701, along with the grippers 7, to move towards the binding rocker arm 5 via the lead screw 702. Since the tape 601 inside the fixed plate 6 is connected to the binding film inside the moving plate 8 through the upper surface of the extrusion column 501, the tape 601 and the binding film wrap the chives on the grippers 7 during their movement. When the vegetables are moved to the position directly above the flat plate 8, the second motor 504 drives the drive plate 503 to rotate. During the rotation of the drive plate 503, the drive plate 503 pulls the connecting plate 502, causing the binding rocker arm 5 to rotate at a certain angle with the connecting rod 602 on the outer wall of the fixed plate 6 as the center. The squeezing column 501 at the end of the binding rocker arm 5 squeezes the tape 601 downward and squeezes the moving plate 8 downward. During the downward movement of the moving plate 8, the second spring 801 is squeezed and contracted. When the moving plate 8 descends to the lowest position, the cutting blade 804 is exposed through the through hole 803 on one side of the platform 802 and cuts the tape 601, thereby completing the binding operation of the chives.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A harvester transport and packaging mechanism, comprising a harvester (1), characterized in that: Four sets of first drive rods (201) are installed on both sides of one end of the harvester (1). The outer walls of the two sets of first drive rods (201) are fitted with clamping belts (2). A second drive rod (203) is provided on one side of the clamping belt (2). A torsion belt (202) is fitted on the outer wall of the second drive rod (203). A servo motor (204) is installed at the end of the first drive rod (201) and the second drive rod (203). A conveyor belt (3) is installed on one side of the torsion belt (202). Drive rollers (301) are provided at both ends of the inner wall of the conveyor belt (3). A first motor (302) is installed at the end of the drive roller (301). A box (4) is provided at the bottom of one end of the conveyor belt (3). Two sets of hand grippers (7) are installed at the bottom of the box (4). A moving plate (8) is provided on one side of the hand grippers (7). A cutting blade (804) is provided on one side of the moving plate (8). A binding assembly is installed on one side of the moving plate (8).

2. The harvester transport and packaging mechanism according to claim 1, characterized in that: The harvester (1) has two supporting heads (101) on both sides at one end. A harvester (9) is installed on one side of the supporting head (101). A rotating blade (901) is fixed at the bottom of the harvester (9). A rotating rod (902) is connected to the top of the harvester (9). A fourth motor (903) is installed at the end of the rotating rod (902).

3. The harvester transport and packaging mechanism according to claim 1, characterized in that: The rotation angle at both ends of the torsion belt (202) is 90 degrees, and the two ends of the torsion belt (202) are respectively connected to the first drive rod (201) and the second drive rod (203).

4. The harvester transport and packaging mechanism according to claim 1, characterized in that: The bottom of the conveyor belt (3) is provided with a vibrating plate (304), the bottom of the vibrating plate (304) is equipped with a vibrating motor (306), and the bottom of the vibrating plate (304) is provided with two sets of first springs (305).

5. A harvester transport and packaging mechanism according to claim 1, characterized in that: The outer wall of the conveyor belt (3) is fixed with multiple sets of partitions (303), and a baffle (307) is provided at one end of the conveyor belt (3). The conveyor belt (3) is inclined.

6. A harvester transport and packaging mechanism according to claim 1, characterized in that: The bottom of the box (4) is provided with two sets of boxes (401), and a sensor (402) is installed at one end of each box (401).

7. A harvester transport and packaging mechanism according to claim 1, characterized in that: The bottom of the gripper (7) is connected to a drive block (701), and a lead screw (702) is provided inside the drive block (701). A third motor (703) is installed at the end of the lead screw (702).

8. A harvester transport and packaging mechanism according to claim 1, characterized in that: The binding assembly includes a fixing plate (6), with connecting rods (602) fixed on both sides of the outer wall of the fixing plate (6). A binding rocker arm (5) is sleeved on the outer wall of the connecting rod (602). Two sets of compression columns (501) are provided at one end of the binding rocker arm (5). A connecting plate (502) is connected to the top of the binding rocker arm (5). A drive plate (503) is movably installed at one end of the connecting plate (502). A second motor (504) is provided at the end of the drive plate (503).

9. A harvester transport and packaging mechanism according to claim 8, characterized in that: The bottom of the movable plate (8) is equipped with four sets of second springs (801), the top of the movable plate (8) is fixed with a platform (802), a through hole (803) is opened on one side of the platform (802), a binding film is placed inside the movable plate (8), and tape (601) is installed inside the fixed plate (6).

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