Metal case cutting device

Abstract

The invention relates to the technical field of cutting, and discloses a metal case cutting device which comprises a base and a cutting head slidably connected into the base, a driving device is mounted at one end of the cutting head, an auxiliary device is mounted at the lower end of the driving device, and the auxiliary device is used for leveling parts. The auxiliary device comprises an adjusting cylinder installed at one end of the driving device, extrusion columns are rotationally connected to the two sides of the adjusting cylinder and used for abutting against the part, an extending cylinder is installed at one end of the adjusting cylinder, a plurality of clamping pieces are arranged in the extending cylinder, and a through groove is formed in the extending cylinder. According to the metal plate shaping device, the two extrusion columns are rotated to move relatively, the metal plates on the two sides of the kerf are shifted by the extrusion columns to retract, so that the expanded kerf is shifted by the extrusion columns to retract, the kerf is kept vertical, the metal plate is shaped, and the shaped metal plate can be better cut by a cutting head.

Description

Technical Field

[0001] The invention relates to the field of cutting, and in particular to a metal chassis cutting device. Background Art

[0002] Laser cutting machine is to focus the laser emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, the material is eventually cut to achieve the purpose of cutting. Laser cutting replaces the traditional mechanical knife with an invisible beam. It has the characteristics of high precision, fast cutting, no limitation on cutting pattern, automatic typesetting to save materials, smooth incision, low processing cost, etc. It will gradually improve or replace the traditional metal cutting process equipment.

[0003] The existing metal chassis raw materials are metal plates that go through cutting and bending processes. When the raw metal plates are bent and deformed, during laser cutting, the metal plates on both sides of the cut will be pulled open by the bending force, thus affecting subsequent laser cutting and resulting in defective products after cutting. Summary of the invention

[0004] The present invention provides a metal chassis cutting device, which solves the problem mentioned in the above background technology that when the raw metal plate is bent and deformed, the metal plates on both sides of the cut will be pulled and unfolded by the bending and deformation force during laser cutting, thus affecting the subsequent laser cutting and resulting in defective products after cutting processing.

[0005] The present invention provides the following technical solution: a metal chassis cutting device comprises a base and a cutting head slidably connected inside the base, a driving device is installed at one end of the cutting head, an auxiliary device is installed at the lower end of the driving device, the auxiliary device is used to level the parts, the auxiliary device comprises an adjustment cylinder installed at one end of the driving device, both sides of the adjustment cylinder are rotatably connected with extrusion columns, and the extrusion columns are used to abut against the parts;

[0006] A protruding tube is installed at one end of the adjusting tube, a plurality of clamps are arranged inside the protruding tube, a through slot is arranged on the protruding tube, and the clamps are used to adhere to the cut;

[0007] An adjusting device is installed at the other end of the adjusting cylinder, and the adjusting device is used to detect the position of the clamping member.

[0008] As an optional solution of the metal chassis cutting device described in the present invention, the interior of the adjustment cylinder is rotatably connected to a rotating rod, and a cleaning brush is installed at the lower end of the rotating rod, and the cleaning brush is used to clean both sides of the cut.

[0009] As an optional solution of the metal chassis cutting device described in the present invention, the lower end of the extrusion column is rotatably connected to a ball.

[0010] As an optional solution of the metal chassis cutting device described in the present invention, a rubber block is installed on one side of the extrusion column, and the rubber block is used to abut against the parts.

[0011] As an optional solution of the metal chassis cutting device described in the present invention, the adjustment device includes a limit plate installed at one end of the adjustment cylinder, and the limit plate is used to abut against the upper end of the clamping member.

[0012] As an optional solution of the metal chassis cutting device of the present invention, wherein: a water storage chamber is provided inside the clamp;

[0013] A flow hole is arranged inside the limit plate, and the flow hole is used to transmit liquid to the water storage cavity.

[0014] As an optional solution of the metal chassis cutting device of the present invention, wherein: a liquid cavity and an overflow groove are further provided inside the limit plate, the liquid cavity, the overflow groove and the flow hole are connected, a sliding block is slidably connected inside the liquid cavity, sealing plates are installed on both sides of the sliding block, and the sealing plates are used to seal the lower end of the flow hole;

[0015] An infusion tube is also installed on the upper end of the limiting plate, and the infusion tube is used to transmit liquid to the liquid cavity.

[0016] As an optional solution of the metal chassis cutting device described in the present invention, a return spring is also installed on the upper end of the sliding block, and the sliding block is connected to the limit plate through the return spring.

[0017] As an optional solution of the metal chassis cutting device of the present invention, wherein: a vertical slot is provided inside the adjusting cylinder, a short shaft is slidably connected inside the vertical slot, a round sleeve is rotatably connected to one end of the short shaft, a third spring is installed on the upper end of the round sleeve, and the round sleeve is connected to the adjusting cylinder through the third spring;

[0018] A protruding block is also installed inside the adjusting cylinder, and the protruding block is used to drive the extrusion column to rotate.

[0019] As an optional solution of the metal chassis cutting device of the present invention, wherein: a driving device is also installed inside the adjusting cylinder, and the driving device includes a cylinder installed inside the adjusting cylinder, and a second piston plate is slidably connected inside the cylinder, and the second piston plate is connected to the cylinder through a fourth spring;

[0020] A push rod is installed at the lower end of the second piston plate, a plurality of protruding balls are installed on the outer surface of the sphere, a gap groove is arranged between every two protruding balls, an air hole is arranged at the lower end of the cylinder, and a one-way valve is arranged at the lower end of the second piston plate;

[0021] A transmission pipe is installed at the upper end of the cylinder, and the transmission pipe is connected to the cylinder;

[0022] An extrusion cylinder is installed inside the adjustment cylinder, and a first piston plate is slidably connected inside the extrusion cylinder. The first piston plate and the extrusion cylinder are connected via a first spring. A round shaft column is installed at the lower end of the first piston plate, and the round shaft column is located at the upper end of the through groove. A spring sheet is provided on the inner wall of the extrusion cylinder, and the first piston plate is used to abut against the spring sheet.

[0023] The outer surface of the rotating rod is provided with a spiral groove, one end of the push rod is installed with an extension rod, and one end of the extension rod is slidably connected to the spiral groove.

[0024] The present invention has the following beneficial effects:

[0025] 1. The metal chassis cutting device rotates two extrusion columns to move relative to each other, and uses the extrusion columns to move the metal plates on both sides of the cut to shrink, so that the expanded cut is retracted by the extrusion columns to keep the cut vertical, thereby completing the shaping of the metal plate, so that the shaped metal plate can be better cut by the cutting head.

[0026] 2. The metal chassis cutting device drives the sealing plate to slide upward through the sliding block, so that the overflow groove is connected with the flow hole, so that the liquid in the liquid cavity flows to the flow hole and is sprayed. The clamp is located at the lower end of the sliding block. Therefore, the liquid sprayed at the flow hole will enter the water storage cavity at the upper end of the clamp, so that a large amount of liquid is injected into the interior of the clamp, thereby increasing the weight of the clamp, so that the clamp after adjusting the weight can squeeze the bent and deformed metal plate, so that the bent metal plate is squeezed into a flat metal plate, so that the cutting head can easily cut the shaped metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the auxiliary device of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the driving device of the present invention.

[0030] Figure 4 It is a structural schematic diagram of the adjustment device of the present invention.

[0031] Figure 5It is a schematic diagram of the structure of the card component of the present invention.

[0032] Figure 6 It is a structural schematic diagram of the extension tube of the present invention.

[0033] In the figure: 1, base; 2, cutting head; 3, auxiliary device; 4, driving device; 5, adjusting device; 6, cleaning brush; 7, extrusion cylinder; 8, first piston plate; 9, spring; 10, first spring; 11, round shaft column; 12, through groove; 13, clamp; 14, second spring; 15, push plate; 16, water storage chamber; 30, raised block; 31, adjusting cylinder; 32, short shaft; 33, round sleeve; 34, third spring; 35, extrusion column; 36 , rubber block; 37, extending cylinder; 38, sphere; 39, raised ball; 40, gap groove; 41, cylinder; 42, second piston plate; 43, air hole; 44, push rod; 45, fourth spring; 46, transmission tube; 47, rotating rod; 48, extending rod; 49, spiral groove; 51, limit plate; 52, liquid cavity; 53, overflow groove; 54, flow hole; 55, sealing plate; 56, sliding block; 57, reset spring; 58, infusion tube. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] See also Figure 1-3 A metal chassis cutting device comprises a base 1 and a cutting head 2 slidably connected inside the base 1, a driving device 4 is installed at one end of the cutting head 2, an auxiliary device 3 is installed at the lower end of the driving device 4, the auxiliary device 3 is used to level the parts, the auxiliary device 3 comprises an adjustment cylinder 31 installed at one end of the driving device 4, and both sides of the adjustment cylinder 31 are rotatably connected with extrusion columns 35, and the extrusion columns 35 are used to abut against the parts;

[0037] An extension tube 37 is installed at one end of the adjustment tube 31. A plurality of clamps 13 are arranged inside the extension tube 37. A through groove 12 is arranged on the extension tube 37. The clamps 13 are used to adhere to the cut seam.

[0038] The other end of the adjustment cylinder 31 is equipped with an adjustment device 5 , which is used to detect the position of the clamp 13 .

[0039] according to Figure 1As shown in the figure, place the metal plate on the upper end of the cutting head 2, and then cut the metal plate through the cutting head 2. Subsequently, push the adjustment cylinder 31 downward by the driving device 4, so that the adjustment cylinder 31 drives the extrusion column 35 to abut against both sides of the cut. Then, rotate the two extrusion columns 35 to move relatively, and use the extrusion column 35 to拨动 the metal plates on both sides of the cut to shrink, so that the expanded cut is拨动 by the metal plates retracted by the extrusion column 35, so that the cut remains vertical, thereby completing the shaping of the metal plate, so that the shaped metal plate can be better cut by the cutting head 2;

[0040] Furthermore, since the cutting head 2 slides inside the base 1 to cut the metal plate, the extrusion column 35 can only extrude and shrink the metal plates near the cut, and the cut far from the cutting head 2 will still be pulled and expanded by the force of bending deformation. Therefore, an extension cylinder 37 is installed at one end of the adjustment cylinder 31. By adhering the clamping member 13 inside the extension cylinder 37 to the cut, the cut is limited from expanding by the clamping member 13;

[0041] It should be particularly noted that the clamping member 13 is in the shape of a "work" character, and a strong magnet is installed at the lower end of the clamping member 13, and it is adhered to both sides of the cut by the strong magnet;

[0042] The metal plate is made of iron.

[0043] Embodiment 2

[0044] This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figure 1-3 , a round shaft column 47 is rotatably connected inside the adjustment cylinder 31, and a cleaning brush 6 is installed at the lower end of the round shaft column 47. The cleaning brush 6 is used to clean both sides of the cut.

[0045] According to Figure 3 As shown in the figure, when impurities appear on the upper end surface of the metal plate, it may affect the adhesion of the clamping member 13 to both sides of the cut, resulting in the inability of the clamping member 13 to be fixedly connected to both sides of the cut. Therefore, by rotating the cleaning brush 6, the cleaning brush 6 first rotates to clean both sides of the cut, so as to keep both sides of the cut clean, so that the clamping member 13 can better adhere to both sides of the cut.

[0046] Embodiment 3

[0047] This embodiment is an improvement based on Embodiment 2. Specifically, please refer to Figure 1-3 , the lower end of the extrusion column 35 is rotatably connected with a spherical ball 38;

[0048] A rubber block 36 is installed on one side of the extrusion column 35. The rubber block 36 is used to abut against the parts.

[0049] The ball 38 is rotatably connected to the lower end of the extrusion column 35. When the adjustment cylinder 31 drives the extrusion column 35 to slide downward, the ball 38 abuts against the metal plate. When the cutting head 2 drives the adjustment cylinder 31 to move, the ball 38 rotates, thereby reducing friction through the ball 38.

[0050] according to Figure 3 As shown, the rubber block 36 on one side of the extrusion column 35 is pressed against the metal plate. When the extrusion column 35 rotates, the rubber block 36 is driven to move by the extrusion column 35, so that the rubber block 36 is used to move the metal plate, so that the two rubber blocks 36 move the metal plate relative to each other to make the cut in a vertically uniform state.

[0051] Example 4

[0052] This embodiment is an improvement made on the basis of embodiment 3. For details, please refer to Figure 1-4 The adjustment device 5 includes a limit plate 51 installed at one end of the adjustment cylinder 31, and the limit plate 51 is used to abut against the upper end of the clamp 13;

[0053] A water storage chamber 16 is provided inside the clamp 13;

[0054] A flow hole 54 is provided inside the limiting plate 51, and the flow hole 54 is used to transmit liquid to the water storage chamber 16;

[0055] The limit plate 51 is further provided with a liquid cavity 52 and an overflow groove 53. The liquid cavity 52, the overflow groove 53 and the flow hole 54 are connected. A sliding block 56 is slidably connected to the inside of the liquid cavity 52. ​​Sealing plates 55 are installed on both sides of the sliding block 56. The sealing plates 55 are used to seal the lower end of the flow hole 54.

[0056] A liquid infusion tube 58 is also installed at the upper end of the limit plate 51, and the liquid infusion tube 58 is used to transmit liquid to the liquid cavity 52;

[0057] A return spring 57 is also installed at the upper end of the sliding block 56, and the sliding block 56 is connected to the limit plate 51 through the return spring 57;

[0058] according to Figure 4As shown, when the clamping member 13 extending out of the cylinder 37 adheres to the metal plate, the height of the clamping member 13 is detected by the limit plate 51. When the bending force of the metal plate is large and the clamping member 13 adhered to the slit is lifted up, the height of the lifted clamping member 13 exceeds the limit plate 51. Therefore, when the cutting head 2 drives the adjustment cylinder 31 and the limit plate 51 to move, the sliding block 56 at the lower end of the limit plate 51 will be squeezed by the lifted clamping member 13, causing the sliding block 56 to slide upward, and the sealing plate 55 is driven to slide upward by the sliding block 56, so that the overflow The groove 53 is connected with the flow hole 54, so that the liquid in the liquid cavity 52 flows to the flow hole 54 and is sprayed. The clamp 13 is located at the lower end of the sliding block 56, so that the liquid sprayed at the flow hole 54 will enter the water storage cavity 16 at the upper end of the clamp 13, so that a large amount of liquid is injected into the interior of the clamp 13, thereby increasing the weight of the clamp 13, so that the clamp 13 after adjusting the weight can squeeze the bent and deformed metal plate, so that the bent metal plate is squeezed into a flat metal plate, so that the cutting head 2 can easily cut the shaped metal plate.

[0059] Example 5

[0060] This embodiment is an improvement made on the basis of embodiment 4. For details, please refer to Figure 1-4 The adjusting cylinder 31 is provided with a vertical groove inside, a short shaft 32 is slidably connected inside the vertical groove, a round sleeve 33 is rotatably connected to one end of the short shaft 32, a third spring 34 is installed on the upper end of the round sleeve 33, and the round sleeve 33 and the adjusting cylinder 31 are connected through the third spring 34;

[0061] A protruding block 30 is also installed inside the adjusting cylinder 31 , and the protruding block 30 is used to drive the squeezing column 35 to rotate.

[0062] according to Figure 2 As shown, after the adjusting cylinder 31 drives the extrusion column 35 and the ball 38 to contact the metal plate, the ball 38 and the extrusion column 35 are squeezed upward by the metal plate, and the short shaft 32 is slidably connected to the vertical groove, and then the upper end of the extrusion column 35 is pressed against 30, so that the upper end of the extrusion column 35 is driven to slide to one side by the protruding block 30, and the extrusion column 35 uses the short shaft 32 as a fulcrum, so that the rubber block 36 on one side of the extrusion column 35 is pressed against the metal plate, and the rubber block 36 is driven to move by the extrusion column 35, so that the metal plate is moved by the rubber block 36, so that the two rubber blocks 36 are relatively moved to move the metal plate so that the slit is in a vertically uniform state. The side of the end slides to the other side, and then the side of the lower end of the two extrusion columns 35 is relatively swung, so that when the extrusion column 35 rotates, the rubber block 36 is driven to move by the extrusion column 35, and the metal plate is moved by the rubber block 36, so that the two rubber blocks 36 are relatively moved to move the metal plate so that the slit is in a vertically uniform state.

[0063] Example 6

[0064] This embodiment is an improvement made on the basis of embodiment 5. For details, please refer to Figure 1-6 A driving device 4 is also installed inside the adjusting cylinder 31. The driving device 4 includes a cylinder 41 installed inside the adjusting cylinder 31. A second piston plate 42 is slidably connected inside the cylinder 41. The second piston plate 42 is connected to the cylinder 41 through a fourth spring 45.

[0065] A push rod 44 is installed at the lower end of the second piston plate 42, a plurality of protruding balls 39 are installed on the outer surface of the ball 38, a gap groove 40 is provided between every two protruding balls 39, an air hole 43 is provided at the lower end of the cylinder 41, and a one-way valve is provided at the lower end of the second piston plate 42;

[0066] A transmission pipe 46 is installed at the upper end of the cylinder 41, and the transmission pipe 46 is connected to the cylinder 41;

[0067] An extrusion cylinder 7 is installed inside the adjustment cylinder 31, and a first piston plate 8 is slidably connected inside the extrusion cylinder 7. The first piston plate 8 and the extrusion cylinder 7 are connected via a first spring 10. An extrusion column 11 is installed at the lower end of the first piston plate 8. The extrusion column 11 is located at the upper end of the through groove 12. A spring sheet 9 is provided on the inner wall of the extrusion cylinder 7, and the first piston plate 8 is used to abut against the spring sheet 9.

[0068] A spiral groove 49 is provided on the outer surface of the circular shaft column 47 , and an extension rod 48 is installed at one end of the push rod 44 , and one end of the extension rod 48 is slidably connected to the spiral groove 49 .

[0069] according to Figure 3 As shown, when the ball 38 rotates, the rotating ball 38 drives the protruding ball 39 to contact the push rod 44, so that the push rod 44 drives the second piston plate 42 to slide upward, and the second piston plate 42 pushes the air inside the cylinder 41 upward to the transmission pipe 46, and the air is transmitted to the extrusion cylinder 7 through the transmission pipe 46, and the first piston plate 8 is squeezed by the air to slide downward, and the extrusion column 11 is driven to slide downward through the first piston plate 8, and the extrusion column 11 is inserted into the through groove 12, so that the extrusion column 11 is used to squeeze the clamp 13 to slide downward, so that the clamp 13 adheres to the upper end of the metal plate;

[0070] according to Figure 6 As shown, after the first clamping member 13 is squeezed out of the extension tube 37 by the squeezing column 11, the second spring 14 pushes the push plate 15 to slide the plurality of clamping members 13 toward the through groove 12, so that one end of the second clamping member 13 fits inside the extension tube 37, so that the squeezing column 11 can squeeze and push the second clamping member 13 again to adhere to the metal plate;

[0071] It should be noted that, in order to shape the slit to the greatest extent, a clamp 13 needs to be adhered to the slit at a distance from one end, so a spring sheet 9 is installed inside the extrusion cylinder 7. When the transmission tube 46 transmits air to the extrusion cylinder 7, the first piston plate 8 abuts against the spring sheet 9. Since air can be compressed, when the air pressure at the extrusion cylinder 7 is greater than the elastic force at the spring sheet 9, the cutting head 2 also cuts and moves a distance, and the high pressure pushes the first piston plate 8 to slide downward, thereby achieving a clamp 13 adhered to the slit at a distance from one end.

[0072] according to Figure 3 As shown, when the push rod 44 slides upward, the push rod 44 also drives the extension rod 48 to slide upward, and one end of the extension rod 48 is slidably connected to the spiral groove 49, so that the circular shaft column 47 is rotated, and the circular shaft column 47 drives 06 to rotate, so that the cleaning brush 6 rotates to clean the upper end surface of the metal plate.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A metal chassis cutting device, comprising a base (1) and a cutting head (2) slidably connected inside the base (1), characterized in that: A driving device (4) is installed at one end of the cutting head (2), an auxiliary device (3) is installed at the lower end of the driving device (4), the auxiliary device (3) is used to level the parts, the auxiliary device (3) comprises an adjustment cylinder (31) installed at one end of the driving device (4), both sides of the adjustment cylinder (31) are rotatably connected with squeezing columns (35), and the squeezing columns (35) are used to abut against the parts; A protruding tube (37) is installed at one end of the adjustment tube (31), a plurality of clamping members (13) are arranged inside the protruding tube (37), a through groove (12) is arranged on the protruding tube (37), and the clamping member (13) is used to adhere to the cut; An adjustment device (5) is installed at the other end of the adjustment cylinder (31), and the adjustment device (5) is used to detect the position of the clamping member (13).

2. The metal chassis cutting device according to claim 1, characterized in that: The interior of the adjustment cylinder (31) is rotatably connected to a rotating rod (47), and a cleaning brush (6) is mounted on the lower end of the rotating rod (47). The cleaning brush (6) is used to clean both sides of the cut.

3. The metal chassis cutting device according to claim 2, characterized in that: A round ball (38) is rotatably connected to the lower end of the extrusion column (35).

4. The metal chassis cutting device according to claim 3, characterized in that: A rubber block (36) is installed on one side of the extrusion column (35), and the rubber block (36) is used to abut against a component.

5. The metal chassis cutting device according to claim 2, characterized in that: The adjustment device (5) comprises a limit plate (51) mounted on one end of the adjustment cylinder (31), and the limit plate (51) is used to abut against the upper end of the clamping member (13).

6. The metal chassis cutting device according to claim 5, characterized in that: A water storage chamber (16) is provided inside the clamp (13); A circulation hole (54) is provided inside the limiting plate (51), and the circulation hole (54) is used to transmit liquid to the water storage chamber (16).

7. The metal chassis cutting device according to claim 5, characterized in that: A liquid cavity (52) and an overflow groove (53) are further provided inside the limiting plate (51); the liquid cavity (52), the overflow groove (53) and the circulation hole (54) are in communication; a sliding block (56) is slidably connected inside the liquid cavity (52); sealing plates (55) are installed on both sides of the sliding block (56); the sealing plates (55) are used to seal the lower end of the circulation hole (54); A liquid infusion tube (58) is also installed at the upper end of the limiting plate (51), and the liquid infusion tube (58) is used to transmit liquid to the liquid cavity (52).

8. The metal chassis cutting device according to claim 7, characterized in that: A return spring (57) is also installed at the upper end of the sliding block (56), and the sliding block (56) and the limiting plate (51) are connected via the return spring (57).

9. The metal chassis cutting device according to claim 3, characterized in that: The adjusting cylinder (31) is provided with a vertical groove inside, a short shaft (32) is slidably connected inside the vertical groove, a round sleeve (33) is rotatably connected to one end of the short shaft (32), a third spring (34) is installed on the upper end of the round sleeve (33), and the round sleeve (33) and the adjusting cylinder (31) are connected via the third spring (34); A protruding block (30) is also installed inside the adjustment cylinder (31), and the protruding block (30) is used to drive the extrusion column (35) to rotate.

10. The metal chassis cutting device according to claim 9, characterized in that: A driving device (4) is also installed inside the adjusting cylinder (31), and the driving device (4) comprises a cylinder (41) installed inside the adjusting cylinder (31), a second piston plate (42) is slidably connected inside the cylinder (41), and the second piston plate (42) is connected to the cylinder (41) via a fourth spring (45); A push rod (44) is installed at the lower end of the second piston plate (42), a plurality of protruding balls (39) are installed on the outer surface of the spherical ball (38), a gap groove (40) is provided between every two protruding balls (39), an air hole (43) is provided at the lower end of the cylinder (41), and a one-way valve is provided at the lower end of the second piston plate (42); A transmission pipe (46) is installed at the upper end of the cylinder (41), and the transmission pipe (46) is in communication with the cylinder (41); An extrusion cylinder (7) is installed inside the adjustment cylinder (31), and a first piston plate (8) is slidably connected inside the extrusion cylinder (7). The first piston plate (8) and the extrusion cylinder (7) are connected via a first spring (10). A round shaft column (11) is installed at the lower end of the first piston plate (8), and the round shaft column (11) is located at the upper end of the through groove (12). A spring sheet (9) is provided on the inner wall of the extrusion cylinder (7), and the first piston plate (8) is used to abut against the spring sheet (9). The outer surface of the rotating rod (47) is provided with a spiral groove (49), one end of the push rod (44) is mounted with an extension rod (48), and one end of the extension rod (48) is slidably connected to the spiral groove (49).

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