Stock pipe stock bin discharging device

Abstract

The utility model discloses a discharging device of a material pipe bin. The discharging device comprises a bottom plate, a height adjusting mechanism is installed on the bottom plate, a bearing plate is installed on the height adjusting mechanism, a jacking mechanism is installed on the bearing plate, a translation mechanism is installed on the jacking mechanism, the material pipe bin is installed on the bearing plate, and a material pushing mechanism is installed on the material pipe bin. According to the utility model, the material pipe at the bottom of the material storage bin is moved out through the translation mechanism and is moved to the front end of the material pushing mechanism, and the material pushing mechanism pushes the material pipe to move to the next process, so that the material pipe is discharged out of the bin, the labor intensity of workers is reduced, more time and labor are saved, and the discharging efficiency of the material pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip material tubes, in particular to a bin-out device for a material tube bin. Background Art

[0002] After the semiconductor device is manufactured, it needs to be inspected and sorted. Existing semiconductor chips are usually stored in material tubes. After the material tube is full of chips, it will be placed in a silo. An outlet is set at the lower end of the silo. During the chip inspection or sorting process, it is necessary to manually move the bottom material tube from the outlet and then place it on the chip discharge mechanism. The operation is time-consuming and laborious, and the manual pick-up efficiency is low, which cannot meet the requirements of large-scale production inspection. In addition, the existing material tube silo can only be used for material tubes of one size and cannot store material tubes of any size, which makes the silo limited and unable to meet actual needs. In view of the above defects, it is necessary to design a silo discharge device for material tube silos. Utility Model Content

[0003] The purpose of the utility model is to provide a material tube silo unloading device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a material pipe silo out-of-bin device, comprising a bottom plate, a height adjustment mechanism is installed on the bottom plate, a bearing plate is installed on the height adjustment mechanism, a jacking mechanism is installed on the bearing plate, a translation mechanism is installed on the jacking mechanism, a material pipe silo is installed on the bearing plate, and a material pushing mechanism is installed on the material pipe silo.

[0005] Preferably, the height adjustment mechanism includes a support seat, a first support plate and an adjusting screw, the support seat is installed on the base plate, a first slide groove is vertically arranged on the support seat, a first support plate is slidably arranged on the first slide groove, the bottom of the first support plate is threadedly connected with the adjusting screw, threaded holes are provided at both ends of the bottom of the first support plate, first waist-shaped holes are provided at both ends of the support seat, and a first bolt is provided in the first waist-shaped hole.

[0006] Preferably, the lifting mechanism includes a lifting plate, which is fixedly connected to the piston rod of the first cylinder, guide rods are installed at both ends of the lifting plate, a sleeve is mounted on the guide rod, the sleeve is installed on the bearing plate, a second slide groove is opened at one end of the bearing plate, a second waist-shaped hole is opened in the second slide groove, third waist-shaped holes are opened on both sides of the second slide groove, and a limiting retaining ring is installed at the bottom of the guide rod.

[0007] Preferably, the translation mechanism includes a translation plate, which is installed on the slide of the slide cylinder, which is installed on the lifting plate, and fixed blocks are installed at both ends of the lifting plate, and limiting screws are screwed on the fixed blocks, and limiting blocks are installed on the slide of the slide cylinder, and limiting stops are installed on the translation plate, and the limit stops are L-shaped, and first support plates are installed on both ends of the translation plate, and two stop blocks are installed at one end of the first support plate, and the two stop blocks are arranged at intervals, and a second support plate is installed in the middle of the translation plate, and a stop plate is installed in the middle of the second support plate.

[0008] Preferably, the material pipe silo includes a left support frame, a right support frame, a sensor, an L-shaped support plate, a material pipe support plate and a blocking plate. The left support frame and the right support frame are symmetrically arranged. The blocking plate is installed on the right support frame through a connecting plate. The sensor is installed on the sensor support plate, and the sensor support plate is installed on the load-bearing plate.

[0009] Preferably, the left support frame and the right support frame both include a second support plate, a square slide groove is provided at the upper end of the second support plate, a first slide plate is slidably arranged inside the square slide groove, two fourth waist-shaped holes arranged at intervals are provided at the upper end of the first slide plate, the fourth waist-shaped holes are inclined, and a second bolt is arranged on the fourth waist-shaped hole.

[0010] Preferably, a material storage bin is formed between the two material pipe baffles of the left support frame and the right support frame, two fifth waist-shaped holes arranged at intervals are opened at the lower end of the first slide plate, the fifth waist-shaped holes are inclined, and the fifth waist-shaped holes are provided with third bolts, an L-shaped material supporting plate is installed at the lower end of the second support plate, and a second slide plate is installed at the bottom of the left support frame.

[0011] Preferably, a third slide groove is provided on one side of the L-shaped support plate, a hollow groove is provided on the upper end of the third slide groove, a sixth waist-shaped hole is provided on the other side of the L-shaped support plate, a material tube support plate is slidably provided in the third slide groove, the material tube support plate is L-shaped, a material supporting groove is provided on one end of the material tube support plate, a screw hole is provided on the other end of the material tube support plate, and a sixth bolt is provided on the sixth waist-shaped hole.

[0012] Preferably, the pushing mechanism includes a pushing plate, which is fixedly connected to one end of a connecting rod, and the other end of the connecting rod passes through a Z-shaped connecting plate and is fixedly connected to a retaining ring. A spring is mounted on the connecting rod, and one end of the spring is fixedly connected to the pushing plate, and the other end of the spring is fixedly connected to the Z-shaped connecting plate. The Z-shaped connecting plate is fixedly connected to the piston rod of the second cylinder, and the second cylinder is mounted on the cylinder mounting plate.

[0013] Compared with the prior art, the technical solution provided by the utility model has at least the following technical effects or advantages:

[0014] 1. The slide cylinder drives the translation plate to move, and the first and second support plates also move with it, thereby driving the material tubes on the first and second support plates to move, and the two baffle plates on the first support plate block both sides of the material tube to prevent the material tube from falling during the movement;

[0015] 2. By setting the limit screw, limit block and limit stopper, the slide cylinder drives the translation plate to move, and the limit block and limit stopper also move with it. When the limit stopper contacts the limit screw, the limit screw blocks the limit stopper, limits the extension stroke of the slide cylinder, and ensures the accurate translation position of the material pipe;

[0016] 3. Loosen the second and third bolts, push the tube baffle to move, and adjust the distance between the two tube baffles to adapt to tubes of different sizes;

[0017] 4. By providing a connecting rod, a spring and a Z-shaped connecting plate, in the process of pushing the material tube, the existence of the spring prevents the material pushing plate from directly impacting the material tube when it contacts the material tube, thus avoiding damage to the material tube due to impact;

[0018] 5. The material pipe at the bottom of the storage bin is moved out through the translation mechanism, and the material pipe is moved to the front end of the pushing mechanism. The pushing mechanism pushes the material pipe to move to the next process, thereby realizing the removal of the material pipe from the bin, reducing the labor intensity of the staff, saving time and effort, and improving the removal efficiency of the material pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a side view of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the utility model.

[0023] In the attached figure:

[0024] 1. Bottom plate; 2. Height adjustment mechanism; 201. Support seat; 202. First slide slot; 203. First support plate; 204. Adjustment screw; 205. Threaded hole; 206. First waist-shaped hole; 207. First bolt; 3. Loading plate; 301. Second slide slot; 302. Second waist-shaped hole; 303. Third waist-shaped hole; 4. Lifting mechanism; 401. Lifting plate; 402. First gas Cylinder; 403, guide rod; 404, sleeve; 405, limit ring; 5, translation mechanism; 501, translation plate; 502, slide cylinder; 503, fixed block; 504, limit screw; 505, limit block; 506, limit block; 507, first support plate; 508, block block; 509, second support plate; 510, block plate; 6, material pipe silo; 61, left support frame; 6101, second support plate; 6102, square slide; 6103, first slide plate; 6104, fourth waist-shaped hole; 6105, second bolt; 6106, material tube baffle plate; 6107, fifth waist-shaped hole; 6108, third bolt; 6109, L-shaped support plate; 6110, second slide plate; 6111, fourth bolt; 6112, fifth bolt; 62, right support frame; 63, sensor; 64, sensor support plate; 65, L-shaped support plate; 6501, third slide; 6502, sixth waist-shaped hole; 66, material tube support plate; 6601, support groove; 6602, screw hole; 67, baffle plate; 68, connecting plate; 7, pushing mechanism; 701, pushing plate; 702, connecting rod; 703, Z-shaped connecting plate; 704, second cylinder; 705, cylinder mounting plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 As shown, the utility model provides a technical solution: a material pipe silo unloading device, comprising a bottom plate 1, a height adjustment mechanism 2 is installed on the bottom plate 1, a bearing plate 3 is installed on the height adjustment mechanism 2, a jacking mechanism 4 is installed on the bearing plate 3, a translation mechanism 5 is installed on the jacking mechanism 4, a material pipe silo 6 is installed on the bearing plate 3, and a material pushing mechanism 7 is installed on the material pipe silo 6.

[0027] The height adjustment mechanism 2 in this embodiment includes a support seat 201, a first support plate 203 and an adjusting screw 204. The support seat 201 is installed on the base plate 1. A first sliding groove 202 is vertically arranged on the support seat 201. The first support plate 203 is slidably arranged on the first sliding groove 202. The bottom of the first support plate 203 is threadedly connected with the adjusting screw 204, and the adjusting screw 204 abuts against the base plate 1. Threaded holes 205 are provided at both ends of the bottom of the first support plate 203, and first waist-shaped holes 206 are provided at both ends of the support seat 201. A first bolt 207 is arranged in the first waist-shaped hole 206, and the rod of the first bolt 207 passes through the first waist-shaped hole 206 and is threadedly connected with the threaded hole 205. Loosen the first bolt 207 to allow the first support plate 203 to slide on the first slide groove 202 of the support seat 201, and rotate the adjusting screw 204 to adjust the distance that the end of the adjusting screw 204 extends out of the first support plate 203, thereby adjusting the height of the first support plate 203 and the supporting plate 3, so that the height adjustment mechanism 2 can change the outlet height of the material pipe as needed. After the adjustment is completed, tighten the first bolt 207 to fix the first support plate 203 on the support seat 201.

[0028] The lifting mechanism 4 in this embodiment includes a lifting plate 401, which is fixedly connected to the piston rod of the first cylinder 402, and guide rods 403 are installed at both ends of the lifting plate 401. The guide rods 403 are sleeved with sleeves 404, and the sleeves 404 are installed on the bearing plate 3. One end of the bearing plate 3 is provided with a second slide groove 301, and the second slide groove 301 is provided with a second waist-shaped hole 302. Both sides of the second slide groove 301 are provided with third waist-shaped holes 303, and the bottom of the guide rod 403 is provided with a limit retaining ring 405. The lifting plate 401 is pushed up and down by the first cylinder 402 to achieve the up and down movement adjustment of the translation mechanism 5.

[0029] The translation mechanism 5 in this embodiment includes a translation plate 501, which is mounted on a slide of a slide cylinder 502, which is mounted on a lifting plate 401. Fixed blocks 503 are mounted at both ends of the lifting plate 401, and limiting screws 504 are screwed on the fixed blocks 503. A limiting block 505 is mounted on the slide of the slide cylinder 502, and a limiting stopper 506 is mounted on the translation plate 501. The limiting stopper 506 is L-shaped. First supporting plates 507 are mounted at both ends of the translation plate 501, and two stopper blocks 508 are mounted at one end of the first supporting plate 507. The two stopper blocks 508 are arranged at intervals. A second supporting plate 509 is mounted in the middle of the translation plate 501, and a stopper plate 510 is mounted in the middle of the second supporting plate 509. The translation plate 501 is driven to move by the slide cylinder 502, and the first supporting plate 507 and the second supporting plate 509 also move accordingly, thereby driving the material tubes on the first supporting plate 507 and the second supporting plate 509 to move, and the two material blocking plates 508 on the first supporting plate 507 are used to block the two sides of the material tube to prevent the material tube from falling during the movement, and the slide cylinder 502 drives the translation plate 501 to move by setting a limit screw 504, a limit block 505 and a limit stop 506, and the limit block 506 also moves accordingly. When the limit stop 506 contacts the limit screw 504, the limit screw 504 blocks the limit stop 506, limits the extension stroke of the slide cylinder 502, and ensures the accurate translation position of the material tube.

[0030] The material pipe silo 6 in this embodiment includes a left support frame 61, a right support frame 62, a sensor 63, an L-shaped support plate 65, a material pipe support plate 66 and a blocking plate 67. The left support frame 61 and the right support frame 62 are symmetrically arranged. The left support frame 61 and the right support frame 62 both include a second support plate 6101. A square slide groove 6102 is provided on the upper end of the second support plate 6101. A strip hole connected to the square slide groove 6102 is provided on the second support plate 6101. A first slide plate 6103 is slidably arranged inside the square slide groove 6102. Two fourth waist-shaped holes 6104 arranged at intervals are provided on the upper end of the first slide plate 6103. It is arranged obliquely, and a second bolt 6105 is arranged on the fourth waist-shaped hole 6104, and the second bolt 6105 passes through the fourth waist-shaped hole 6104 and the strip hole in sequence and is screwed to the upper end of the material tube baffle 6106, and a storage bin is formed between the two material tube baffles 6106. Two fifth waist-shaped holes 6107 arranged at intervals are opened at the lower end of the first slide plate 6103, and the fifth waist-shaped hole 6107 is arranged obliquely, and a third bolt 6108 is arranged on the fifth waist-shaped hole 6107, and the third bolt 6108 passes through the fifth waist-shaped hole 6107 and the strip hole in sequence and is screwed to the lower end of the material tube baffle 6106, and an L-shaped supporting plate 6109 is installed at the lower end of the second support plate 6101. Loosen the second bolt 6105 and the third bolt 6108, push the material tube baffle 6106 to move, and adjust the distance between the two material tube baffles 6106 to adapt to material tubes of different sizes. After the adjustment is completed, tighten the second bolt 6105 and the third bolt 6108 to fix the two material tube baffles 6106 on the second support plate 6101. A screw is screwed on the top of the second support plate 6101, and the screw is screwed on the first slide plate 6103. By turning the screw, the screw drives the first slide plate 6103 to move up and down in the square slide groove 6102, so as to realize the height adjustment of the first slide plate 6103.

[0031] The bottom of the left support frame 61 in this embodiment is provided with a second slide plate 6110, which is slidably arranged in the second slide groove 301, and a fourth bolt 6111 is arranged on the second waist-shaped hole 302, and the fourth bolt 6111 passes through the second waist-shaped hole 302 and is screwed to the second slide plate 6110, and a fifth bolt 6112 is arranged on the third waist-shaped hole 303, and the fifth bolt 6112 passes through the third waist-shaped hole 303 and is screwed to the bottom of the left support frame 61. Loosening the fourth bolt 6111 and the fifth bolt 6112 pushes the second slide plate 6110 to move in the second slide groove 301, so that the second slide plate 6110 drives the left support frame 61 to move, and the distance between the left support frame 61 and the right support frame 62 can be adjusted, so as to adjust the length of the material pipe silo 6 to adapt to material pipes of different sizes.

[0032] The L-shaped support plate 65 in this embodiment has a third chute 6501 on one side, a hollow groove on the upper end of the third chute 6501, a sixth waist-shaped hole 6502 on the other side of the L-shaped support plate 65, a material tube support plate 66 is slidably arranged in the third chute 6501, the material tube support plate 66 is L-shaped, a material support groove 6601 is arranged on one end of the material tube support plate 66, a screw hole 6602 is arranged on the other end of the material tube support plate 66, a sixth bolt is arranged on the sixth waist-shaped hole 6502, and the rod of the sixth bolt passes through the sixth waist-shaped hole 6502 and is screwed to the screw hole 6602 of the material tube support plate 66. Loosen the sixth bolt, push the material tube support plate 66 up and down in the third chute 6501 to adjust the height of the material tube support plate 66, and tighten the sixth bolt to fix the material tube support plate 66 on the L-shaped support plate 65.

[0033] The blocking plate 67 in this embodiment is installed on the right support frame 62 through the connecting plate 68. The blocking plate 67 is used to block the material pipe to prevent the material pipe in the storage bin from falling. The sensor 63 is located below the material pipe baffle 6106. The sensor 63 is installed on the sensor support plate 64. The sensor support plate 64 is installed on the supporting plate 3. The sensor 63 is electrically connected to the PLC controller, and the PLC controller is electrically connected to the first cylinder 402, the slide cylinder 502 and the second cylinder 704 respectively.

[0034] The pushing mechanism 7 in this embodiment includes a pushing plate 701, which is fixedly connected to one end of a connecting rod 702, and the other end of the connecting rod 702 passes through a Z-shaped connecting plate 703 and is fixedly connected to a retaining ring.

[0035] A spring is mounted on the connecting rod 702, one end of the spring is fixedly connected to the material pushing plate 701, and the other end of the spring is fixedly connected to the Z-shaped connecting plate 703, and the Z-shaped connecting plate 703 is fixedly connected to the piston rod of the second cylinder 704. The second cylinder 704 is mounted on the cylinder mounting plate 705, and the cylinder mounting plate 705 is mounted on the lower end of the second support plate 6101. By providing the connecting rod 702, the spring and the Z-shaped connecting plate 703, in the process of pushing the material tube, the existence of the spring prevents the material pushing plate 701 from having a direct hard impact when it contacts the material tube, thereby preventing the material tube from being damaged by the impact.

[0036] The working principle of the utility model is as follows: a plurality of material pipes are placed in the material storage bin. Under the blocking effect of the material pipe baffle 6106, the plurality of material pipes are arranged in the material storage bin from top to bottom. The sensor 63 senses the material pipes. The sensor 63 sends the sensed signal to the PLC controller. The PLC controller controls the first cylinder 402 to move. The first cylinder 402 pushes the lifting plate 401 to move upward. The slide cylinder 502 and the translation plate 501 also move upward, so that the first supporting plate 507 and the second supporting plate 509 move upward to support the material. The slide cylinder 502 moves and its slide drives the translation plate 501 to move, and the first supporting plate 507 and the second supporting plate 509 also move accordingly, thereby driving the material tubes on the first supporting plate 507 and the second supporting plate 509 to move out from the bottom of the storage bin, and moving the material tubes to the front end of the pushing mechanism 7, the second cylinder 704 moves, pushing the Z-shaped connecting plate 703 to move, and the pushing plate 701 also moves accordingly, and the pushing plate 701 pushes the material tube to move, so that the material tube moves to the next process (chip discharging mechanism), thereby realizing the discharge of the material tube from the bin.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material tube silo unloading device, characterized in that: The invention comprises a bottom plate (1), a height adjustment mechanism (2) is installed on the bottom plate (1), a bearing plate (3) is installed on the height adjustment mechanism (2), a lifting mechanism (4) is installed on the bearing plate (3), a translation mechanism (5) is installed on the lifting mechanism (4), a material pipe silo (6) is installed on the bearing plate (3), and a material pushing mechanism (7) is installed on the material pipe silo (6).

2. The material tube silo unloading device according to claim 1, characterized in that: The height adjustment mechanism (2) comprises a support seat (201), a first support plate (203) and an adjusting screw (204); the support seat (201) is mounted on the bottom plate (1); a first sliding groove (202) is vertically arranged on the support seat (201); a first support plate (203) is slidably arranged on the first sliding groove (202); the bottom of the first support plate (203) is threadedly connected with the adjusting screw (204); threaded holes (205) are provided at both ends of the bottom of the first support plate (203); first waist-shaped holes (206) are provided at both ends of the support seat (201); and a first bolt (207) is arranged in the first waist-shaped hole (206).

3. The material tube silo unloading device according to claim 1, characterized in that: The lifting mechanism (4) comprises a lifting plate (401), the lifting plate (401) is fixedly connected to the piston rod of the first cylinder (402), guide rods (403) are installed at both ends of the lifting plate (401), a sleeve (404) is mounted on the guide rod (403), the sleeve (404) is installed on the bearing plate (3), a second slide groove (301) is opened at one end of the bearing plate (3), a second waist-shaped hole (302) is opened in the second slide groove (301), third waist-shaped holes (303) are opened on both sides of the second slide groove (301), and a limit retaining ring (405) is installed at the bottom of the guide rod (403).

4. The material tube silo unloading device according to claim 1, characterized in that: The translation mechanism (5) comprises a translation plate (501), the translation plate (501) being mounted on a slide of a slide cylinder (502), the slide cylinder (502) being mounted on a lifting plate (401), both ends of the lifting plate (401) being mounted with fixed blocks (503), a limiting screw rod (504) being screwed on the fixed block (503), a limiting block (505) being mounted on the slide of the slide cylinder (502), and the translation plate (501) being mounted on a slide of the slide cylinder (502). A limit stopper (506) is installed on the upper portion, and the limit stopper (506) is L-shaped. First supporting plates (507) are installed at both ends of the translation plate (501), and two blocking blocks (508) are installed at one end of the first supporting plate (507), and the two blocking blocks (508) are arranged at intervals. A second supporting plate (509) is installed in the middle of the translation plate (501), and a blocking plate (510) is installed in the middle of the second supporting plate (509).

5. The material tube silo unloading device according to claim 1, characterized in that: The material pipe silo (6) comprises a left support frame (61), a right support frame (62), a sensor (63), an L-shaped support plate (65), a material pipe support plate (66) and a blocking plate (67); the left support frame (61) and the right support frame (62) are symmetrically arranged; the blocking plate (67) is mounted on the right support frame (62) via a connecting plate (68); the sensor (63) is mounted on a sensor support plate (64); and the sensor support plate (64) is mounted on a bearing plate (3).

6. The material tube silo unloading device according to claim 5, characterized in that: The left support frame (61) and the right support frame (62) both include a second support plate (6101), a square slide groove (6102) is provided at the upper end of the second support plate (6101), a first slide plate (6103) is slidably arranged inside the square slide groove (6102), and two fourth waist-shaped holes (6104) arranged at intervals are provided at the upper end of the first slide plate (6103), the fourth waist-shaped holes (6104) are arranged obliquely, and a second bolt (6105) is arranged on the fourth waist-shaped hole (6104).

7. The material tube silo unloading device according to claim 6, characterized in that: A material storage bin is formed between the two material pipe baffles (6106) of the left support frame (61) and the right support frame (62); two fifth waist-shaped holes (6107) arranged at intervals are opened at the lower end of the first slide plate (6103); the fifth waist-shaped holes (6107) are arranged at an angle; a third bolt (6108) is arranged on the fifth waist-shaped holes (6107); an L-shaped material supporting plate (6109) is installed at the lower end of the second support plate (6101); and a second slide plate (6110) is installed at the bottom of the left support frame (61).

8. The material tube silo discharging device according to claim 6, characterized in that: A third slide groove (6501) is provided on one side of the L-shaped support plate (65), a hollow groove is provided at the upper end of the third slide groove (6501), a sixth waist-shaped hole (6502) is provided on the other side of the L-shaped support plate (65), a material tube support plate (66) is slidably provided in the third slide groove (6501), the material tube support plate (66) is L-shaped, a material support groove (6601) is provided on one end of the material tube support plate (66), a screw hole (6602) is provided on the other end of the material tube support plate (66), and a sixth bolt is provided on the sixth waist-shaped hole (6502).

9. The material tube silo unloading device according to claim 5, characterized in that: The pushing mechanism (7) comprises a pushing plate (701), the pushing plate (701) is fixedly connected to one end of a connecting rod (702), the other end of the connecting rod (702) passes through a Z-shaped connecting plate (703) and is fixedly connected to a retaining ring, a spring is sleeved on the connecting rod (702), one end of the spring is fixedly connected to the pushing plate (701), the other end of the spring is fixedly connected to the Z-shaped connecting plate (703), the Z-shaped connecting plate (703) is fixedly connected to the piston rod of a second cylinder (704), and the second cylinder (704) is mounted on a cylinder mounting plate (705).

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