Water nozzle dispensing equipment

Abstract

The invention discloses water nozzle dispensing equipment, and relates to the field of water nozzle dispensing, the water nozzle dispensing equipment comprises a displacement assembly, a pneumatic motor, a corrosion-resistant pipeline and a dispensing pipe, the pneumatic motor is provided with an output shaft through a coupling, the top of the pneumatic motor is provided with a mounting seat, and the top of the mounting seat and the top of the dispensing pipe are both provided with chain wheels. According to the water nozzle dispensing equipment, through the arrangement of the pneumatic motor, automatic control over rotation and movement of the dispensing pipe and dispensing operation can be achieved in a pneumatic mode, on the basis, the dispensing efficiency and quality are improved, it is ensured that glue is evenly applied to the designated position of the dispensing pipe, and through the combination of the bearing seat, the mounting seat and the pneumatic motor, the dispensing efficiency is improved. And through cooperation of the angle sensor and the limiting clamping jaw, the rotation angle and positioning of the dispensing pipe can be accurately controlled, it is guaranteed that the initial position of dispensing every time is consistent, and it is guaranteed that glue is evenly covered.

Description

Technical Field

[0001] The present invention relates to the field of nozzle dispensing, and particularly to a nozzle dispensing device. Background Art

[0002] At present, manual dispensing is still widely used in some small-scale production enterprises for nozzle gluing. Workers hold glue guns and apply glue to the parts of the nozzle that need to be glued by relying on personal experience and operation skills. In some enterprises of a slightly larger scale, simple tooling may be used to assist in dispensing, such as fixtures for fixing the nozzle, so that the nozzle can be glued in a relatively stable state, but the motion control during the gluing process still depends on manual operation of the glue gun. In addition, some enterprises will use some semi-automatic dispensing equipment. Such equipment usually can only achieve simple rotation of the nozzle or single-direction movement of the glue gun, and cannot achieve precise coordination between the rotation of the nozzle and the movement of the glue gun.

[0003] Therefore, it is very necessary to propose a nozzle dispensing device to solve the above problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a nozzle dispensing device, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A nozzle dispensing device includes a displacement component, a pneumatic motor, a corrosion-resistant pipe, and a dispensing pipe. The pneumatic motor is installed with an output shaft through a coupling. An installation seat is provided at the top of the pneumatic motor. Sprockets are provided at the tops of both the installation seat and the dispensing pipe.

[0007] Limiting jaws are symmetrically installed on both sides of the outer wall of the dispensing pipe. A limiting component is installed on the outer wall of the dispensing pipe. A connection groove is opened at the bottom of the side of the limiting component close to the dispensing pipe. Block components are symmetrically and movably connected to both sides of the inner cavity of the connection groove.

[0008] A second connection seat is installed on one side of the dispensing pipe close to the limiting component. A positioning block is movably connected to the bottom of the inner cavity of the second connection seat. A through groove is opened at the center of the top of the second connection seat.

[0009] Preferably, a linear motor is installed at the top of the displacement component. A drive frame is drivingly connected to the linear motor. A guide rod is installed on the side of the bottom of the drive frame. The guide rod is movably connected to the inner cavity of the displacement component. A first connection seat is installed at the top of the drive frame. A displacement sensor is installed at the top of the first connection seat.

[0010] Preferably, the first connecting seat is connected to the corrosion-resistant pipe, the corrosion-resistant pipe is connected to the dispensing pipe, the inner cavities of the corrosion-resistant pipe and the dispensing pipe are communicated, and an angle sensor is installed on the outer wall of the dispensing pipe.

[0011] Preferably, chains are installed on the outer walls of the two sprockets. The output shaft penetrates through the inner cavity of the mounting seat and is installed in the sprocket at the mounting seat, and a bearing seat is installed at the top of the outer wall of the dispensing pipe.

[0012] Preferably, an activity groove is formed on one side of the limiting component close to the dispensing pipe. A bidirectional lead screw is rotatably connected in the inner cavity of the activity groove, and a driving motor is installed on the side of the limiting component.

[0013] Preferably, the driving motor is connected to the bidirectional lead screw through a first rotating shaft. A connecting column is installed on the outer wall of the limiting jaw, and the other end of the connecting column is connected to a first movable block. The first movable block is movably connected in the inner cavity of the activity groove and is threadedly connected to the outer wall of the bidirectional lead screw.

[0014] Preferably, rollers are symmetrically and rotatably connected to the opposite sides of the two block components. Third movable blocks are symmetrically installed at the top and bottom of the block components. Second fixed rods are symmetrically installed at the top and bottom on both sides of the inner cavity of the connecting groove. A second spring is wound around the outer wall of the second fixed rod. One end of the second spring is installed in the inner cavity of the limiting component, and the other end of the second spring is connected to the third movable block. The third movable block is sleeved on the outer wall of the second fixed rod.

[0015] Preferably, clamping grooves are symmetrically formed in the middle of both sides of the second connecting seat. A threaded rod is threadedly connected to the outer wall of the limiting component, and a connecting block is installed at the bottom of the threaded rod.

[0016] Preferably, the sizes of the connecting block and the through groove are adapted to each other, the sizes of the second connecting seat and the positioning groove are adapted to each other, the sizes of the clamping groove and the block component are adapted to each other. The connecting block is inserted into the inner cavity of the through groove, the block component is inserted into the inner cavity of the clamping groove, and the second connecting seat is installed in the inner cavity of the connecting groove.

[0017] Preferably, the positioning block is movably connected in the inner cavity of the second connecting seat. The bottom of the connecting block is attached to the top of the positioning block. Second movable blocks are symmetrically installed at the top of both sides of the positioning block. First fixed rods are symmetrically installed on both sides of the inner cavity of the second connecting seat. A first spring is wound around the outer wall of the first fixed rod. The bottom of the first spring is installed at the bottom of the inner cavity of the second connecting seat, and the top of the first spring is installed at the bottom of the second movable block.

[0018] Compared with the prior art, the present invention provides a faucet dispensing device, which has the following beneficial effects:

[0019] 1. For this nozzle dispensing device, by means of the pneumatic motor provided, the rotation, movement of the dispensing tube and the automatic control of the dispensing operation can be achieved pneumatically. Based on this, the dispensing efficiency and quality can be improved, ensuring that the glue is evenly coated on the designated position of the dispensing tube. By combining the bearing seat, mounting seat and pneumatic motor, stable rotation can be realized. Through the cooperation of the angle sensor and the limit jaw, the rotation angle and positioning of the dispensing tube can be accurately controlled, ensuring that the starting position of each dispensing is consistent, ensuring even coverage of the glue, improving the dispensing accuracy and the stability of product quality, and being different from the problems of inaccurate positioning and unstable rotation of traditional manual or simple tooling. This device can be used for AB glue, and with corrosion-resistant pipes, it can ensure the stable quality of the glue, avoid uneven mixing of the glue affecting the performance, and improve the reliability of product quality.

[0020] 2. For this nozzle dispensing device, by starting the linear motor provided, the corrosion-resistant pipe can be driven to move through the drive frame and the first connecting seat. At this time, the position of the dispensing tube can be adjusted according to the dispensing requirements. Based on this, the dispensing range of the dispensing tube can be further increased. With the guiding rod provided, the smooth movement of the drive frame can be improved. By starting the pneumatic motor provided, the sprocket and chain can be driven through the output shaft. Based on this, the dispensing tube can be driven to rotate, enabling the dispensing tube to reach the designated position for dispensing work.

[0021] 3. For this nozzle dispensing device, by starting the drive motor provided, the bidirectional lead screw can be driven to rotate, enabling the first movable block to be threadedly connected thereto. At this time, the first movable block can drive the limit jaw to move left and right through the connecting column. After the two limit jaws move towards the opposite side, the dispensing tube can be clamped. At this time, with the angle sensor provided, the positioned dispensing tube after rotation can be positioned. After the two limit jaws move towards the opposite side, the dispensing tube can rotate normally.

[0022] 4. For this nozzle dispensing device, through the second connecting seat provided, it can be installed in the connecting groove of the limit component. Through the positioning block provided, it can be installed in the inner cavity of the positioning groove. Through the latch assembly provided, it can be installed in the inner cavity of the card slot. Based on this, it is convenient to connect the limit component and the dispensing tube, and at the same time, it is also convenient to separate the limit component and the dispensing tube, facilitating the separate maintenance work.

[0023] 5. For this faucet dispensing device, by setting the second spring, the third movable block can be constantly pushed outward, enabling the block assembly to drive the roller to insert into the inner cavity of the roller. Based on this, the side of the second connecting seat can be installed. When separation is required, move the second connecting seat so that the wall of the card slot can contact and squeeze the roller, and the block assembly can be disengaged from the inner cavity of the card slot. By setting the first spring, in the normal state, the positioning block will be contracted upward through the second movable block, enabling the positioning block to retract into the inner cavity of the second connecting seat. By rotating the set threaded rod, the connecting block can move towards the bottom of the through slot cavity. Based on this, the positioning block can be moved downward so that the positioning block can insert into the inner cavity of the positioning slot, enabling the second connecting seat to achieve a better fixing effect. After the connecting block is disengaged from the through slot cavity, the set first spring can drive the positioning block to quickly reset. Brief Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the structural schematic diagram of the displacement component of the present invention;

[0026] Figure 3 is the structural schematic diagram of the dispensing tube of the present invention;

[0027] Figure 4 is the present invention Figure 1 enlarged view of part A in;

[0028] Figure 5 is the structural schematic diagram of the limiting component of the present invention;

[0029] Figure 6 is the structural schematic diagram of the second connecting seat of the present invention.

[0030] In the figure: 1, displacement component; 2, linear motor; 3, guide rod; 4, drive frame; 5, first connecting seat; 6, displacement sensor; 7, corrosion-resistant pipe; 8, pneumatic motor; 9, output shaft; 10, mounting seat; 11, sprocket; 12, chain; 13, bearing seat; 14, dispensing tube; 15, angle sensor; 16, limiting jaw; 17, connecting column; 18, limiting component; 19, drive motor; 20, activity slot; 21, bidirectional lead screw; 22, first movable block; 23, connecting slot; 24, positioning slot; 25, threaded rod; 26, connecting block; 27, block assembly; 28, second connecting seat; 29, through slot; 30, card slot; 31, positioning block; 32, second movable block; 33, first fixing rod; 34, first spring; 35, roller; 36, third movable block; 37, second fixing rod; 38, second spring. Detailed Embodiments

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1:

[0033] like Figures 1 - 3 As shown, a water nozzle dispensing device includes a displacement component 1, an air motor 8, a corrosion-resistant pipeline 7, and a dispensing tube 14. The air motor 8 is installed with an output shaft 9 through a coupling. A mounting seat 10 is arranged on the top of the air motor 8. The mounting seat 10 and the top of the dispensing tube 14 are both provided with a sprocket 11. A linear motor 2 is installed on the top of the displacement component 1. The linear motor 2 is driven and connected to a driving frame 4. A guide rod 3 is installed on the side of the bottom of the driving frame 4. The guide rod 3 is movably connected in the inner cavity of the displacement component 1. The driving frame 4 is driven and connected to the linear motor 2. The guide rod 3 is movably connected in the inner cavity of the displacement component 1. A first connecting seat 5 is installed on the top of the moving frame 4, a displacement sensor 6 is installed on the top of the first connecting seat 5, the first connecting seat 5 is connected to the corrosion-resistant pipe 7, the corrosion-resistant pipe 7 is connected to the dispensing pipe 14, the corrosion-resistant pipe 7 is communicated with the inner cavity of the dispensing pipe 14, an angle sensor 15 is installed on the outer wall of the dispensing pipe 14, a chain 12 is installed on the outer wall of the two sprocket wheels 11, the output shaft 9 passes through the inner cavity of the mounting seat 10 and is installed in the sprocket wheel 11 at the mounting seat 10, and a bearing seat 13 is installed on the top of the outer wall of the dispensing pipe 14;

[0034] By means of the pneumatic motor 8, the rotation, movement and automatic control of the glue dispensing tube 14 can be realized by pneumatics, thereby improving the efficiency and quality of glue dispensing, ensuring that the glue is evenly coated at the position specified by the glue dispensing tube 14, and by combining the bearing seat 13, the mounting seat 10 and the pneumatic motor 8, stable rotation can be achieved, and the rotation angle and positioning of the glue dispensing tube 14 can be accurately controlled through the cooperation of the angle sensor 15 and the limit clamp 16, ensuring that the starting position of each glue dispensing is consistent, ensuring that the glue is evenly covered, improving the glue coating accuracy and product quality stability, and being different from the problems of inaccurate positioning and unstable rotation of traditional manual or simple tooling. This equipment can be used for AB glue, and in combination with the corrosion-resistant pipe 7, can ensure the stability of the glue quality, avoid the uneven mixing of glue affecting the performance, and improve the reliability of product quality;

[0035] By starting the linear motor 2, the corrosion-resistant pipe 7 can be driven to move through the driving frame 4 and the first connecting seat 5. At this time, the position of the glue dispensing tube 14 can be adjusted according to the demand for glue dispensing, based on which the glue dispensing range of the glue dispensing tube 14 can be further improved, and the guide rod 3 provided can improve the stability of the movement of the driving frame 4. By starting the pneumatic motor 8, the sprocket 11 and the chain 12 can be driven through the output shaft 9, based on which the glue dispensing tube 14 can be driven to rotate, so that the glue dispensing tube 14 can reach the designated position for glue dispensing.

[0036] Embodiment 2:

[0037] As Figure 1 , Figures 3 - 6 shown, a faucet dispensing device has limiting jaws 16 symmetrically installed on both sides of the outer wall of the dispensing tube 14. A limiting component 18 is installed on the outer wall of the dispensing tube 14. A connection groove 23 is opened at the bottom of the side of the limiting component 18 close to the dispensing tube 14. Two card block components 27 are symmetrically and movably connected to both sides of the inner cavity of the connection groove 23. A second connection seat 28 is installed on the side of the dispensing tube 14 close to the limiting component 18. A positioning block 31 is movably connected to the bottom of the inner cavity of the second connection seat 28. A through groove 29 is opened in the middle of the top of the second connection seat 28. An activity groove 20 is opened on the side of the limiting component 18 close to the dispensing tube 14. A bidirectional lead screw 21 is rotatably connected in the inner cavity of the activity groove 20. A driving motor 19 is installed on the side of the limiting component 18. The driving motor 19 is connected to the bidirectional lead screw 21 through a first rotating shaft. A connecting column 17 is installed on the outer wall of the limiting jaw 16. The other end of the connecting column 17 is connected to a first movable block 22. The first movable block 22 is movably connected in the inner cavity of the activity groove 20 and is threadedly connected to the outer wall of the bidirectional lead screw 21. Two rollers 35 are symmetrically rotatably connected to the opposite sides of the two card block components 27. Third movable blocks 36 are symmetrically installed at the top and bottom of the card block components 27. Second fixing rods 37 are symmetrically installed at the top and bottom of both sides of the inner cavity of the connection groove 23. A second spring 38 is wound around the outer wall of the second fixing rod 37. One end of the second spring 38 is installed in the inner cavity of the limiting component 18. The other end of the second spring 38 is connected to the third movable block 36. The third movable block 36 is sleeved on the outer wall of the second fixing rod 37. Card slots 30 are symmetrically opened in the middle of both sides of the second connection seat 28. A threaded rod 25 is threadedly connected to the outer wall of the limiting component 18. A connecting block 26 is installed at the bottom of the threaded rod 25. The sizes of the connecting block 26 and the through groove 29 are adapted to each other. The sizes of the second connection seat 28 and the positioning groove 24 are adapted to each other. The sizes of the card slots 30 and the card block components 27 are adapted to each other. The connecting block 26 is inserted into the inner cavity of the through groove 29. The card block components 27 are inserted into the inner cavity of the card slots 30. The second connection seat 28 is installed in the inner cavity of the connection groove 23. The positioning block 31 is movably connected to the inner cavity of the second connection seat 28. The bottom of the connecting block 26 is attached to the top of the positioning block 31. Second movable blocks 32 are symmetrically installed at the top of both sides of the positioning block 31. First fixing rods 33 are symmetrically installed on both sides of the inner cavity of the second connection seat 28. A first spring 34 is wound around the outer wall of the first fixing rod 33. The bottom of the first spring 34 is installed at the bottom of the inner cavity of the second connection seat 28. The top of the first spring 34 is installed at the bottom of the second movable block 32;

[0038] By starting the driving motor 19 set, the bidirectional lead screw 21 can be driven to rotate, so that the first movable block 22 can be threadedly connected thereto. At this time, the first movable block 22 can drive the limit claw 16 to move left and right through the connecting column 17. When the two limit claws 16 move towards the opposite side, the dispensing tube 14 can be clamped. At this time, with the cooperation of the angle sensor 15 provided, the rotated dispensing tube 14 can be positioned. When the two limit claws 16 move towards the opposite sides, the dispensing tube 14 can rotate normally. Through the second connecting seat 28 provided, it can be installed in the connecting groove 23 of the limit assembly 18. Through the positioning block 31 provided, it can be installed in the inner cavity of the positioning groove 24. Through the chuck assembly 27 provided, it can be installed in the inner cavity of the clamping groove 30. Based on this, it is convenient to connect the limit assembly 18 and the dispensing tube 14, and at the same time, it is also convenient to separate the limit assembly 18 and the dispensing tube 14, which is convenient for separating them for maintenance work. Through the second spring 38 provided, the third movable block 36 can be always elastically pushed outward, so that the chuck assembly 27 can drive the roller 35 to insert into the inner cavity of the roller 35. Based on this, the side of the second connecting seat 28 can be installed. When separation is required, move the second connecting seat 28 so that the wall of the clamping groove 30 can contact and squeeze the roller 35, and the chuck assembly 27 can be disengaged from the inner cavity of the clamping groove 30. Through the first spring 34 provided, in the normal state, the positioning block 31 will be retracted upward through the second movable block 32, so that the positioning block 31 can be retracted into the inner cavity of the second connecting seat 28. By rotating the threaded rod 25 provided, the connecting block 26 can move towards the bottom of the inner cavity of the through groove 29. Based on this, the positioning block 31 can be moved downward so that the positioning block 31 can be inserted into the inner cavity of the positioning groove 24, so that the second connecting seat 28 can obtain a better fixing effect. After the connecting block 26 is disengaged from the inner cavity of the through groove 29, the first spring 34 provided can drive the positioning block 31 to quickly reset.

[0039] It should be noted that the present invention is a water nozzle dispensing device. When in use, the displacement assembly 1, the bearing seat 13 and the mounting seat 10 are installed in appropriate positions. The raw material for dispensing is input into the inner cavity of the corrosion-resistant pipe 7. The linear motor 2 is started, and the dispensing tube 14 is driven to displace through the driving frame 4 and the first connecting seat 5. The pneumatic motor 8 is started, and the sprocket 11 and the chain 12 are driven through the output shaft 9. Based on this, the dispensing tube 14 is driven to rotate. The angle sensor 15 monitors the rotation angle of the dispensing tube 14. After rotating to an appropriate position, the driving motor 19 is started to drive the bidirectional lead screw 21 to rotate, so that the first movable block 22 can be threadedly connected thereto. At this time, the connecting column 17 can drive the connecting column 17 to clamp the dispensing tube 14. Based on this, positioning is completed, and at this time, dispensing work can be carried out.

[0040] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A faucet dispensing device, comprising a displacement assembly (1), a pneumatic motor (8), a corrosion-resistant pipe (7), and a dispensing tube (14), characterized in that: The pneumatic motor (8) is installed with an output shaft (9) through a coupling. A mounting seat (10) is provided at the top of the pneumatic motor (8). Sprockets (11) are provided at the tops of both the mounting seat (10) and the dispensing tube (14). Limiting jaws (16) are symmetrically installed on both sides of the outer wall of the dispensing tube (14). A limiting component (18) is installed on the outer wall of the dispensing tube (14). A connection groove (23) is opened at the bottom of the side of the limiting component (18) close to the dispensing tube (14). Block components (27) are symmetrically and movably connected to both sides of the inner cavity of the connection groove (23). A second connection seat (28) is installed on the side of the dispensing tube (14) close to the limiting component (18). A positioning block (31) is movably connected to the bottom of the inner cavity of the second connection seat (28). A through groove (29) is opened at the center of the top of the second connection seat (28).

2. The dispensing device for water faucets according to claim 1, wherein: A linear motor (2) is installed at the top of the displacement component (1). A drive frame (4) is drivingly connected to the linear motor (2). A guide rod (3) is installed on the side of the bottom of the drive frame (4). The guide rod (3) is movably connected to the inner cavity of the displacement component (1). A first connection seat (5) is installed at the top of the drive frame (4). A displacement sensor (6) is installed at the top of the first connection seat (5).

3. The dispensing device for faucets according to claim 2, wherein: The first connection seat (5) is connected to a corrosion-resistant pipe (7). The corrosion-resistant pipe (7) is connected to the dispensing tube (14). The inner cavities of the corrosion-resistant pipe (7) and the dispensing tube (14) are communicated. An angle sensor (15) is installed on the outer wall of the dispensing tube (14).

4. A faucet dispensing device according to claim 1, characterized in that: Chains (12) are installed on the outer walls of the two sprockets (11). The output shaft (9) penetrates through the inner cavity of the mounting seat (10) and is installed in the sprocket (11) at the mounting seat (10). A bearing seat (13) is installed at the top of the outer wall of the dispensing tube (14).

5. A faucet dispensing device according to claim 1, characterized in that: An activity groove (20) is opened on the side of the limiting component (18) close to the dispensing tube (14). A bidirectional lead screw (21) is rotatably connected to the inner cavity of the activity groove (20). A drive motor (19) is installed on the side of the limiting component (18).

6. The dispensing device for faucets according to claim 5, wherein: The drive motor (19) is connected to the bidirectional lead screw (21) through a first rotating shaft. A connection column (17) is installed on the outer wall of the limiting jaw (16). The other end of the connection column (17) is connected to a first movable block (22). The first movable block (22) is movably connected to the inner cavity of the activity groove (20) and is threadedly connected to the outer wall of the bidirectional lead screw (21).

7. A faucet dispensing device according to claim 1, characterized in that: On the opposite sides of the two card block assemblies (27), rollers (35) are symmetrically and rotatably connected. At the top and bottom of the card block assembly (27), third movable blocks (36) are symmetrically installed. At the top and bottom on both sides of the inner cavity of the connection groove (23), second fixing rods (37) are symmetrically installed. A second spring (38) is wound around the outer wall of the second fixing rod (37). One end of the second spring (38) is installed in the inner cavity of the limit assembly (18), and the other end of the second spring (38) is connected to the third movable block (36). The third movable block (36) is sleeved on the outer wall of the second fixing rod (37).

8. The dispensing device for water faucets according to claim 1, wherein: On the centers of both sides of the second connection seat (28), clamping grooves (30) are symmetrically formed. A threaded rod (25) is threadedly connected to the outer wall of the limit assembly (18). A connection block (26) is installed at the bottom of the threaded rod (25). A positioning groove (24) is formed at the bottom of the inner cavity of the connection groove (23).

9. The dispensing device for faucet according to claim 1, wherein: The sizes of the connection block (26) and the through groove (29) are adapted to each other. The sizes of the second connection seat (28) and the positioning groove (24) are adapted to each other. The sizes of the clamping groove (30) and the card block assembly (27) are adapted to each other. The connection block (26) is inserted into the inner cavity of the through groove (29). The card block assembly (27) is inserted into the inner cavity of the clamping groove (30). The second connection seat (28) is installed in the inner cavity of the connection groove (23).

10. A faucet dispensing device according to claim 9, characterized in that: The positioning block (31) is movably connected in the inner cavity of the second connection seat (28). The bottom of the connection block (26) is in contact with the top of the positioning block (31). At the top on both sides of the positioning block (31), second movable blocks (32) are symmetrically installed. On both sides of the inner cavity of the second connection seat (28), first fixing rods (33) are symmetrically installed. A first spring (34) is wound around the outer wall of the first fixing rod (33). The bottom of the first spring (34) is installed at the bottom of the inner cavity of the second connection seat (28), and the top of the first spring (34) is installed at the bottom of the second movable block (32).

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