Adjustable cooling runner air cylinder

Abstract

The invention belongs to the technical field of air cylinders, and discloses an adjustable cooling runner air cylinder which comprises a cylinder body, a main piston plate is movably connected into the cylinder body in a sleeved mode, a main piston rod is fixedly connected to the bottom end of the main piston plate, and the bottom end of the main piston rod penetrates through the bottom end of the cylinder body and is fixedly connected with a main movable plate. The outer side face of the main piston rod is movably sleeved with a first reset spring, and the upper end and the lower end of the first reset spring are connected with the bottom end of the main piston plate and the bottom end of the inner cavity of the cylinder body correspondingly. The inner channel is formed in the main piston rod, so that the device can normally extend, meanwhile, the auxiliary movable plate at the bottom end of the main movable plate can extend upwards by inputting cooling liquid, the overall length of the device is increased accordingly, the cylinder body can achieve a longer stroke under the limited length, and the service life of the device is prolonged. And meanwhile, lead screws and other modes are not needed, the whole process is rapidly completed, the device stroke is rapidly increased, and use in different environments is met.

Description

Technical Field

[0001] The invention belongs to the technical field of cylinders, and in particular relates to an adjustable cooling channel cylinder. Background Art

[0002] A cylinder is a cylindrical metal part that guides a piston to perform linear reciprocating motion in the cylinder. It is a device that converts fluid pressure energy into mechanical energy and is widely used in various control devices. The main function of a cylinder is to generate force and control motion. It can perform multiple strokes without intermediate intervention according to the design of the system. The working principle of a cylinder is mainly based on pneumatic transmission, which converts the pressure of compressed air into mechanical energy to drive the mechanism to perform linear reciprocating motion, swing or rotational motion.

[0003] Conventional cylinders use compressed air to achieve linear motion of the piston, but the limited length of the cylinder body limits the extension length of the cylinder. Some cylinders use a screw in conjunction with the cylinder to increase the length, but this device is more complicated to operate and requires manual adjustment of the extended length, making the overall operation extremely inconvenient.

[0004] At the same time, when the length of the cylinder is extended, the prior art generally adopts a fixed hole or a screw with a threaded sleeve to achieve the limit. The former cannot achieve stepless adjustment, and the latter is extremely inconvenient to operate, and urgently needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a cylinder with an adjustable cooling channel to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: an adjustable cooling flow channel cylinder, comprising a cylinder body, a main piston plate is movably sleeved inside the cylinder body, the bottom end of the main piston plate is fixedly connected to the main piston rod, the bottom end of the main piston rod passes through the bottom end of the cylinder body and is fixedly connected to the main movable plate, the outer side surface of the main piston rod is movably sleeved with a first return spring, the upper and lower ends of the first return spring are respectively connected to the bottom end of the main piston plate and the bottom end of the inner cavity of the cylinder body, the upper and lower ends of the outer side surface of the cylinder body are fixedly sleeved with a liquid cooling box, a micro water pump is built-in in the liquid cooling box, the left and right sides of the top of the cylinder body are fixedly connected with air delivery ports, the air delivery ports are connected with the external air pump, the rear end of the liquid cooling box located above is fixedly connected with a No. 1 three-way valve, the rear end of the liquid cooling box below the displacement is fixedly connected with a No. 2 three-way valve, the front end of the No. 1 three-way valve is fixedly connected with a first hose, the front end of the No. 2 three-way valve is fixedly connected with a second hose, and the other end of the second hose is fixedly connected with a limiting component.

[0007] Before use, the top of the gas port needs to be connected to the external air pump. After the connection is completed, the device needs to be reset and the power of the device is turned on to complete the preparation before use.

[0008] As a further technical solution of the present invention, an inner channel is opened inside the main piston rod, and the internal movable sleeve of the inner channel is connected with a secondary piston plate. The bottom end of the secondary piston plate is fixedly connected to the secondary piston rod located inside the inner channel, and the bottom end of the secondary piston rod passes through the bottom end of the main movable plate and is fixedly connected to the secondary movable plate.

[0009] As a further technical solution of the present invention, an extension tube is fixedly connected to the top of the main piston plate, the bottom end of the extension tube is connected to the inner channel, the top end of the extension tube passes through the top of the cylinder body and the rear end of the extension tube is connected to the No. 2 three-way valve.

[0010] When the cylinder needs to be extended, the external air pump can be turned on. At this time, the external compressed air can be input into the cylinder through the air supply port and exert force on the main piston plate. At this time, the main piston plate and the main piston rod will drop accordingly, and drive the main movable plate to move downward. At this time, the first return spring will be compressed accordingly, and the current amount of compressed air input can be maintained to complete the extension process of the cylinder;

[0011] When the stroke of the cylinder is insufficient, the micro water pump located inside the upper liquid cooling box can be turned on. At this time, the micro water pump can pump the coolant inside the liquid cooling box into the interior of the No. 1 three-way valve, and enter the interior of the inner channel through the first hose at the front end of the No. 1 three-way valve, and apply pressure to the auxiliary piston plate. At this time, the auxiliary piston plate and the auxiliary piston rod move downward, and drive the auxiliary movable plate to move downward, thereby increasing the overall stroke of the device and completing the stroke compensation.

[0012] By utilizing the cooperation between the liquid cooling box and the No. 1 three-way valve and opening an internal channel inside the main piston rod, the device can be normally extended, and the auxiliary movable plate at the bottom end of the main movable plate can be extended upward by inputting coolant, thereby increasing its overall length. The cylinder body can achieve a longer stroke within a limited length, and there is no need to use a screw rod or the like. The entire process is completed quickly, and the stroke of the device is quickly increased to meet the use in different environments.

[0013] As a further technical solution of the present invention, two of the liquid cooling boxes are fixedly connected with liquid cooling pipes at equal angles, the liquid cooling pipes are axially evenly distributed on the outer side of the cylinder body, and the outer side of the liquid cooling pipes contacts the outer side of the cylinder body.

[0014] When the device is in normal use, the micro water pumps located inside the upper and lower liquid cooling boxes can be turned on, so that the coolant inside the upper liquid cooling box can enter the lower liquid cooling box through the liquid cooling pipe. At the same time, the coolant inside the lower liquid cooling box can flow back to the upper liquid cooling box through the liquid cooling pipe, so that the coolant can circulate between the two liquid cooling boxes and the liquid cooling pipe. When the coolant flows through the liquid cooling pipe, since the liquid cooling pipe is in contact with the outer side of the cylinder body, it can take away most of the heat on the surface of the cylinder body, completing the cooling process.

[0015] As a further technical solution of the present invention, the limiting assembly includes a temporary storage tube, the outer side of the temporary storage tube is fixedly sleeved with a locking frame, and is connected to the outer side of the bottom end of the main movable plate through the locking frame, and the rear end of the temporary storage tube is fixedly connected to the second hose.

[0016] As a further technical solution of the present invention, a limit plate is movably sleeved inside the temporary storage tube, the front end of the limit plate is fixedly connected to a limit rod, and the limit rod passes through the front end of the temporary storage tube and is fixedly connected to a limit ring.

[0017] As a further technical solution of the present invention, the limiting ring is located on the outer side of the auxiliary piston rod and below the main movable plate, and the outer side of the limiting rod is movably sleeved with a second return spring, and the left and right sides of the second return spring are connected to one side of the inner cavity of the temporary storage tube and one side of the limiting plate.

[0018] As a further technical solution of the present invention, when the second return spring is in the initial state, the inner surface of the limit ring does not contact the outer surface of the auxiliary piston rod. When the second return spring is in a compressed state, the inner surface of the limit ring is in close contact with the outer surface of the auxiliary piston rod.

[0019] When the stroke of the device is extended, that is, the secondary movable plate and the secondary piston rod are displaced downward and reach a predetermined length, the micro water pump located inside the lower liquid cooling box can be opened, and the coolant can be output to the inside of the second hose and enter the inside of the temporary storage tube, and a thrust is applied to the limit rod. At this time, the limit ring is displaced toward one side of the secondary piston rod until the second return spring is compressed to the limit state. At this time, the inner side surface of the limit ring contacts the outer side surface of the secondary piston rod, and the friction force is used to prevent the secondary piston rod from continuing to move downward, thereby completing the stroke extension adjustment process.

[0020] The coolant required for cooling can be used to extend the stroke by the pressure of the coolant. At the same time, the stroke can be limited and fixed by the pressure of the coolant, thereby achieving stepless adjustment of extended stroke. The whole process is completed automatically, completing a convenient stepless adjustment process, avoiding the inconvenient adjustment problems of traditional devices, and significantly improving the practicability and ease of use of the device.

[0021] The beneficial effects of the present invention are as follows:

[0022] (1) The present invention utilizes the cooperation between the liquid cooling box and the No. 1 three-way valve, and opens an internal channel inside the main piston rod, so that the device can be normally extended. At the same time, the auxiliary movable plate at the bottom of the main movable plate can be extended upward by inputting cooling liquid, so that its overall length is increased. The cylinder body can achieve a longer stroke within a limited length. At the same time, there is no need to use a screw rod or the like. The whole process is completed quickly, and the stroke of the device is quickly increased to meet the use in different environments.

[0023] (2) The present invention uses the coolant required for cooling to extend the stroke through the pressure of the coolant. It can also limit and fix the stroke through the pressure of the coolant, thereby realizing stepless adjustment of extended stroke. The whole process is completed automatically, completing a convenient stepless adjustment process, avoiding the inconvenience of adjustment of traditional devices, and significantly improving the practicality and ease of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the coordination of the cylinder body, the main movable plate and the auxiliary movable plate structure of the present invention;

[0026] Figure 3 It is a cross-sectional schematic diagram of the internal structure of the cylinder body of the present invention;

[0027] Figure 4 It is a schematic diagram of the inner channel structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the present invention in a state where the cylinder body is hidden;

[0029] Figure 6 It is a cross-sectional schematic diagram of the internal structure of the liquid cooling box and the liquid cooling tube of the present invention;

[0030] Figure 7 It is a schematic diagram of the coordination of the delivery pipe and the limit assembly structure of the present invention;

[0031] Figure 8 It is a cross-sectional schematic diagram of the internal structure of the limiting component of the present invention.

[0032] In the figure: 1. cylinder body; 2. main piston plate; 3. main piston rod; 4. inner channel; 5. main movable plate; 6. auxiliary piston plate; 7. auxiliary piston rod; 8. auxiliary movable plate; 9. first return spring; 10. gas delivery port; 11. extension pipe; 12. No. 1 three-way valve; 13. No. 2 three-way valve; 14. first hose; 15. second hose; 16. liquid cooling box; 17. liquid cooling pipe; 18. locking frame; 19. limit assembly; 191. temporary storage pipe; 192. limit plate; 193. limit rod; 194. limit ring; 195. second return spring. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figures 1 to 8 As shown, in the embodiment of the present invention, an adjustable cooling flow channel cylinder includes a cylinder body 1, a main piston plate 2 is movably sleeved inside the cylinder body 1, a main piston rod 3 is fixedly connected to the bottom end of the main piston plate 2, the bottom end of the main piston rod 3 passes through the bottom end of the cylinder body 1 and is fixedly connected to the main movable plate 5, a first return spring 9 is movably sleeved on the outer side of the main piston rod 3, the upper and lower ends of the first return spring 9 are respectively connected to the bottom end of the main piston plate 2 and the bottom end of the inner cavity of the cylinder body 1, and the upper and lower ends of the outer side of the cylinder body 1 are fixedly sleeved with a liquid cooling box 16. A micro water pump is built into the liquid cooling box 16. The left and right sides of the top of the cylinder body 1 are fixedly connected with air delivery ports 10, which are connected to the external air pump. The rear end of the upper liquid cooling box 16 is fixedly connected with a No. 1 three-way valve 12, and the rear end of the lower liquid cooling box 16 is fixedly connected with a No. 2 three-way valve 13. The front end of the No. 1 three-way valve 12 is fixedly connected with a first hose 14, and the front end of the No. 2 three-way valve 13 is fixedly connected with a second hose 15, and the other end of the second hose 15 is fixedly connected with a limiting component 19.

[0035] The model of the micro water pump is WNY1000.

[0036] Before use, the top of the gas delivery port 10 needs to be connected to the external air pump. After the connection is completed, the device needs to be reset and the power supply of the device is turned on to complete the preparation before use.

[0037] like Figure 1 and Figure 2 as well as Figure 3 and Figure 4As shown, an inner channel 4 is opened inside the main piston rod 3, and a secondary piston plate 6 is movably sleeved inside the inner channel 4. The bottom end of the secondary piston plate 6 is fixedly connected to a secondary piston rod 7 located inside the inner channel 4. The bottom end of the secondary piston rod 7 passes through the bottom end of the main movable plate 5 and is fixedly connected to the secondary movable plate 8. The top end of the main piston plate 2 is fixedly connected to an extension tube 11. The bottom end of the extension tube 11 is connected to the inner channel 4, the top end of the extension tube 11 passes through the top end of the cylinder body 1, and the rear end of the extension tube 11 is connected to the No. 2 three-way valve 13.

[0038] Embodiment: When the cylinder needs to be extended, the external air pump can be turned on. At this time, the external compressed air can be input into the cylinder body 1 through the air supply port 10, and exert force on the main piston plate 2. At this time, the main piston plate 2 and the main piston rod 3 are lowered, and the main movable plate 5 is driven to move downward. At this time, the first return spring 9 is compressed, and the current amount of compressed air input can be maintained to complete the extension process of the cylinder;

[0039] When the stroke of the cylinder is insufficient, the micro water pump located inside the upper liquid cooling box 16 can be turned on. At this time, the micro water pump can pump the coolant located inside the liquid cooling box 16 into the interior of the No. 1 three-way valve 12, and enter the interior of the inner channel 4 through the first hose 14 at the front end of the No. 1 three-way valve 12, and apply pressure to the auxiliary piston plate 6. At this time, the auxiliary piston plate 6 and the auxiliary piston rod 7 move downward accordingly, and drive the auxiliary movable plate 8 to move downward, thereby increasing the overall stroke of the device and completing the stroke compensation.

[0040] By utilizing the cooperation between the liquid cooling box 16 and the No. 1 three-way valve 12, and opening an internal channel 4 inside the main piston rod 3, the device can be normally extended, and the auxiliary movable plate 8 at the bottom of the main movable plate 5 can be extended upward by inputting cooling liquid, so that its overall length is increased, and the cylinder body 1 can achieve a longer stroke within a limited length. At the same time, there is no need to use a screw rod or the like, and the whole process is completed quickly, thereby quickly increasing the stroke of the device to meet the use in different environments.

[0041] like Figure 1 and Figure 5 as well as Figure 6 As shown, two liquid cooling boxes 16 are fixedly connected with liquid cooling pipes 17 at equal angles. The liquid cooling pipes 17 are axially evenly distributed on the outer side of the cylinder body 1 , and the outer side of the liquid cooling pipes 17 contacts the outer side of the cylinder body 1 .

[0042] When the device is in normal use, the micro water pumps located inside the upper and lower liquid cooling boxes 16 can be turned on, so that the coolant inside the upper liquid cooling box 16 can enter the lower liquid cooling box 16 through the liquid cooling pipe 17. At the same time, the coolant inside the lower liquid cooling box 16 can flow back to the upper liquid cooling box 16 through the liquid cooling pipe 17, so that the coolant can circulate between the two liquid cooling boxes 16 and the liquid cooling pipe 17. When the coolant flows through the liquid cooling pipe 17, since the liquid cooling pipe 17 is in contact with the outer side of the cylinder body 1, it can take away most of the heat on the surface of the cylinder body 1, completing the cooling process.

[0043] like Figure 1 and Figure 5 as well as Figure 7 and Figure 8 As shown, the limiting assembly 19 includes a temporary storage tube 191, the outer side of the temporary storage tube 191 is fixedly sleeved with a locking frame 18, and is connected to the outer side of the bottom end of the main movable plate 5 through the locking frame 18, the rear end of the temporary storage tube 191 is fixedly connected to the second hose 15, the internal movable sleeve of the temporary storage tube 191 is connected to a limiting plate 192, the front end of the limiting plate 192 is fixedly connected to a limiting rod 193, the limiting rod 193 passes through the front end of the temporary storage tube 191 and is fixedly connected to a limiting ring 194, the limiting ring 194 is located at the auxiliary movable plate 5. The outer side surface of the plug rod 7 is located below the main movable plate 5, and the outer side surface of the limit rod 193 is movably sleeved with a second return spring 195. The left and right sides of the second return spring 195 are connected to one side of the inner cavity of the temporary storage tube 191 and one side of the limit plate 192. When the second return spring 195 is in the initial state, the inner side surface of the limit ring 194 does not contact the outer side surface of the auxiliary piston rod 7. When the second return spring 195 is in a compressed state, the inner side surface of the limit ring 194 is in close contact with the outer side surface of the auxiliary piston rod 7.

[0044] Embodiment: When the stroke of the device is extended, that is, the secondary movable plate 8 and the secondary piston rod 7 are displaced downward and reach a predetermined length, the micro water pump located inside the lower liquid cooling box 16 can be turned on, and the coolant can be output to the inside of the second hose 15 and enter the inside of the temporary storage tube 191, and a thrust is applied to the limit rod 193. At this time, the limit ring 194 is displaced toward one side of the secondary piston rod 7 until the second return spring 195 is compressed to the limit state. At this time, the inner side of the limit ring 194 contacts the outer side of the secondary piston rod 7, and the friction force is used to prevent the secondary piston rod 7 from continuing to move downward, thereby completing the stroke extension adjustment process.

[0045] The coolant required for cooling can be used to extend the stroke by the pressure of the coolant. At the same time, the stroke can be limited and fixed by the pressure of the coolant, thereby achieving stepless adjustment of extended stroke. The whole process is completed automatically, completing a convenient stepless adjustment process, avoiding the inconvenient adjustment problems of traditional devices, and significantly improving the practicability and ease of use of the device.

[0046] Working principle and usage process:

[0047] Before use, the top of the gas delivery port 10 needs to be connected to the external air pump. After the connection is completed, the device needs to be reset and the power supply of the device is turned on to complete the preparation before use;

[0048] When the cylinder needs to be extended, the external air pump can be turned on. At this time, the external compressed air can be input into the cylinder body 1 through the air supply port 10, and exert force on the main piston plate 2. At this time, the main piston plate 2 and the main piston rod 3 will drop accordingly, and drive the main movable plate 5 to move downward. At this time, the first return spring 9 will be compressed accordingly, and the current amount of compressed air input can be maintained to complete the extension process of the cylinder;

[0049] When the stroke of the cylinder is insufficient, the micro water pump located inside the upper liquid cooling box 16 can be turned on. At this time, the micro water pump can pump the coolant located inside the liquid cooling box 16 into the interior of the No. 1 three-way valve 12, and enter the interior of the inner channel 4 through the first hose 14 at the front end of the No. 1 three-way valve 12, and apply pressure to the auxiliary piston plate 6. At this time, the auxiliary piston plate 6 and the auxiliary piston rod 7 move downward, and drive the auxiliary movable plate 8 to move downward, that is, increase the stroke of the entire device, and complete the stroke compensation;

[0050] When the device is in normal use, the micro water pumps located inside the upper and lower liquid cooling boxes 16 can be turned on, so that the coolant inside the upper liquid cooling box 16 can enter the lower liquid cooling box 16 through the liquid cooling pipe 17, and at the same time, the coolant inside the lower liquid cooling box 16 can flow back to the upper liquid cooling box 16 through the liquid cooling pipe 17, so that the coolant can circulate between the two liquid cooling boxes 16 and the liquid cooling pipe 17. When the coolant flows through the liquid cooling pipe 17, since the liquid cooling pipe 17 is in contact with the outer side of the cylinder body 1, it can take away most of the heat on the surface of the cylinder body 1, completing the cooling process;

[0051] When the stroke of the device is extended, that is, the secondary movable plate 8 and the secondary piston rod 7 are displaced downward and reach a predetermined length, the micro water pump located inside the lower liquid cooling box 16 can be opened, and the coolant can be output to the inside of the second hose 15 and enter the inside of the temporary storage tube 191, and a thrust is applied to the limit rod 193. At this time, the limit ring 194 is displaced toward one side of the secondary piston rod 7 until the second return spring 195 is compressed to the limit state. At this time, the inner side of the limit ring 194 contacts the outer side of the secondary piston rod 7, and the friction force is used to prevent the secondary piston rod 7 from continuing to move downward, thereby completing the stroke extension adjustment process.

[0052] 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 cylinder with adjustable cooling channel, comprising a cylinder body (1), characterized in that: The cylinder body (1) is internally movably sleeved with a main piston plate (2), the bottom end of the main piston plate (2) is fixedly connected to a main piston rod (3), the bottom end of the main piston rod (3) passes through the bottom end of the cylinder body (1) and is fixedly connected to a main movable plate (5), the outer side surface of the main piston rod (3) is movably sleeved with a first return spring (9), the upper and lower ends of the first return spring (9) are respectively connected to the bottom end of the main piston plate (2) and the bottom end of the inner cavity of the cylinder body (1), the upper and lower ends of the outer side surface of the cylinder body (1) are fixedly sleeved with a liquid cooling box (16), and the liquid cooling box (16) is internally built A micro water pump is provided. The left and right sides of the top of the cylinder body (1) are fixedly connected with air delivery ports (10). The air delivery ports (10) are connected with an external air pump. The rear end of the liquid cooling box (16) located above is fixedly connected with a No. 1 three-way valve (12). The rear end of the liquid cooling box (16) located below is fixedly connected with a No. 2 three-way valve (13). The front end of the No. 1 three-way valve (12) is fixedly connected with a first hose (14). The front end of the No. 2 three-way valve (13) is fixedly connected with a second hose (15). The other end of the second hose (15) is fixedly connected with a limit position assembly (19).

2. The adjustable cooling channel cylinder according to claim 1, characterized in that: An inner channel (4) is provided inside the main piston rod (3), a secondary piston plate (6) is movably sleeved inside the inner channel (4), a secondary piston rod (7) located inside the inner channel (4) is fixedly connected to the bottom end of the secondary piston plate (6), and the bottom end of the secondary piston rod (7) passes through the bottom end of the main movable plate (5) and is fixedly connected to the secondary movable plate (8).

3. The adjustable cooling channel cylinder according to claim 2, characterized in that: The top end of the main piston plate (2) is fixedly connected to an extension tube (11), the bottom end of the extension tube (11) is connected to the inner channel (4), the top end of the extension tube (11) passes through the top end of the cylinder body (1), and the rear end of the extension tube (11) is connected to the No. 2 three-way valve (13).

4. The adjustable cooling channel cylinder according to claim 1, characterized in that: A liquid cooling pipe (17) is fixedly connected between two of the liquid cooling boxes (16) at equal angles. The liquid cooling pipes (17) are axially distributed at equal intervals on the outer side of the cylinder body (1), and the outer side of the liquid cooling pipe (17) is in contact with the outer side of the cylinder body (1).

5. The adjustable cooling channel cylinder according to claim 1, characterized in that: The limiting assembly (19) comprises a temporary storage tube (191), the outer side surface of the temporary storage tube (191) is fixedly sleeved with a locking frame (18), and is connected to the outer side surface of the bottom end of the main movable plate (5) through the locking frame (18), and the rear end of the temporary storage tube (191) is fixedly connected to the second hose (15).

6. The adjustable cooling channel cylinder according to claim 5, characterized in that: The temporary storage tube (191) is movably sleeved with a limit plate (192), the front end of the limit plate (192) is fixedly connected to a limit rod (193), and the limit rod (193) passes through the front end of the temporary storage tube (191) and is fixedly connected to a limit ring (194).

7. The adjustable cooling channel cylinder according to claim 6, characterized in that: The limiting ring (194) is located on the outer side of the auxiliary piston rod (7) and below the main movable plate (5); the outer side of the limiting rod (193) is movably sleeved with a second return spring (195); the left and right sides of the second return spring (195) are connected to one side of the inner cavity of the temporary storage tube (191) and one side of the limiting plate (192).

8. The adjustable cooling channel cylinder according to claim 7, characterized in that: When the second return spring (195) is in an initial state, the inner side surface of the limit ring (194) does not contact the outer side surface of the auxiliary piston rod (7); when the second return spring (195) is in a compressed state, the inner side surface of the limit ring (194) is in close contact with the outer side surface of the auxiliary piston rod (7).

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