Press fitting device

Abstract

The invention discloses a press-fitting device. The press-fitting device comprises a mounting part, a clamping part, a guiding part and a press-fitting part, the mounting part is provided with a press-fitting position; the clamping part is arranged on the mounting part, is located at the press-fitting position and is used for clamping an assembly part with a piston channel; the guide part is provided with a guide channel and an installation end located at the end of the guide channel, the installation end is used for being detachably assembled on an assembly part and enabling the guide channel to be communicated with the piston channel, the guide channel is provided with a guide end spaced from the installation end, and the inner diameter of the guide end is gradually reduced in the direction close to the installation end; the press-fitting part is movably arranged on the mounting part, can be close to or away from the press-fitting position when moving, and extends into the piston channel from the guide end when being close to the press-fitting position. According to the scheme, it is guaranteed that the piston enters the piston channel in a centering mode, interference between the piston and the end edge of the cylinder body when the piston enters the piston channel is effectively avoided, the piston is prevented from being torn by the end edge of the cylinder body, manpower is saved, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of non-pressurized fire extinguisher production equipment technology, specifically to a pressurization device. Background Technology

[0002] Non-pressurized fire extinguishing cylinders utilize a gas-generating agent to instantly produce a large amount of gas during operation, which in turn drives a piston to move towards the chamber containing the extinguishing agent in the cylinder, thereby squeezing out the extinguishing agent to extinguish the fire.

[0003] Publication number CN217567235U discloses a piston-type non-pressurized fire extinguishing cylinder and a piston-type non-pressurized fire extinguisher. It can sense external temperature changes through a heat-sensitive wire, and then ignite the gas-generating agent through the heat-sensitive wire when there is a fire risk or when a fire occurs. The gas-generating agent reacts to produce a large amount of gas, which increases the pressure in the first chamber, thereby pushing the piston towards the second chamber and forcing the extinguishing agent out of the second chamber, thus extinguishing the fire through the expelled extinguishing agent.

[0004] However, when assembling non-pressurized fire extinguishing cylinders, workers usually manually insert the piston into the cylinder. Because it is not easy to align the piston when manually assembling it, the piston edge is easily blocked by the cylinder edge, generating a large shearing force, which can lead to the piston being torn, reducing product quality and production efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a press-fitting device to solve the technical problem that in the prior art, when assembling non-pressurized fire extinguishing cylinders, workers usually manually insert the piston into the cylinder. Because it is not easy to align the piston when manually assembling it, the piston end edge is easily interfered with and blocked by the end edge of the cylinder, generating a large shearing force, which leads to the piston being torn, reducing product quality and production efficiency.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a pressing device, comprising: The mounting section has a press-fit position; A clamping part is provided on the mounting part and located at the press-fit position for clamping an assembly with a piston channel; A guide portion having a guide channel and a mounting end located at the end of the guide channel, the mounting end being detachably mounted to the assembly and connecting the guide channel to the piston channel, the guide channel having a guide end spaced apart from the mounting end, the inner diameter of the guide end tapering towards the mounting end; and The pressing part is movably disposed on the mounting part, and can move closer to or further away from the pressing position when moving, and extends into the piston channel from the guide end when moving closer to the pressing position.

[0007] In some embodiments, a limiting groove is provided on the side of the mounting end away from the guide end. The inner diameter of the limiting groove is larger than the inner diameter of the guide channel and connects to the end of the guide channel near the mounting end, for inserting the end of the fitting.

[0008] In some embodiments, the pressing device further includes a magnetic suction element and an adsorption element, one of which is disposed on the guide portion and the other is disposed on the assembly, and the magnetic suction element and the adsorption element can be magnetically adsorbed.

[0009] In some embodiments, the clamping part includes a clamping drive part and two jaws. The two jaws are located at the pressing position and can move closer to each other and further away from each other. The clamping drive part is disposed in the mounting part and connected to the two jaws, for driving the two jaws to move closer to each other and further away from each other, and for clamping the assembly when they move closer to each other.

[0010] In some embodiments, the clamping part is movable relative to the mounting part, and its direction of movement is the same as that of the pressing part; The pressing device further includes a clamping adjustment part, which is installed on the mounting part and connected to the clamping part, for driving the clamping part to move relative to the mounting part.

[0011] In some embodiments, the mounting part includes a base, a worktable, and a displacement driving part. The worktable is mounted on the base and can move horizontally relative to the base. The displacement driving part is disposed on the base and connected to the worktable, and is used to drive the worktable to move horizontally relative to the base. The pressing position is located on the workbench, and the pressing part is movably mounted on the base.

[0012] In some embodiments, the pressing device further includes a limiting plate, which is disposed on the mounting part and located at the pressing position, and is provided with an annular groove. The axial direction of the annular groove is the same as the movement direction of the pressing part, and is used for inserting the fitting.

[0013] In some embodiments, the limiting plate includes an outer ring and a bearing. The outer ring is disposed on the mounting portion, and the bearing is rotatably mounted on the mounting portion and located inside the outer ring, forming the annular groove with the outer ring at a distance.

[0014] In some embodiments, the press-fitting device further includes a limiting guide post, which is disposed on the mounting portion and located at the press-fitting position, and can extend into the piston channel when the clamping portion clamps the assembly to stop the piston.

[0015] In some embodiments, the pressing part includes a plurality of pressing arms of different sizes, which can be selectively assembled to the mounting part. When each pressing arm is assembled to the mounting part, it can be close to or far from the pressing position, and when it is close to the pressing position, it extends from the guide end into the piston channel.

[0016] In some embodiments, the pressing device further includes a pressing drive unit disposed on the mounting portion and connected to the pressing portion, for driving the pressing portion to move closer to and away from the pressing position.

[0017] Compared with the prior art, in the pressing device provided by the present invention, the cylinder is first clamped by the clamping part and the piston channel of the cylinder is arranged along the movement direction of the pressing part. Then, the mounting end of the guide part is assembled to the end of the cylinder so that the guide channel of the guide part is connected to the piston channel. Then, the piston is placed at the guide end. Since the inner diameter of the guide end is gradually reduced towards the mounting end, the outer diameter of the piston can fall between the maximum inner diameter and the minimum inner diameter of the guide end.

[0018] Thus, when the pressing part moves toward the pressing position, it can press against the piston inside the guide end, and make the piston move toward the piston channel in the direction of the gradually decreasing inner diameter of the guide end. Since the guide channel is connected to the piston channel, it ensures that the piston is centered and enters the piston channel, effectively avoiding interference between the piston and the end edge of the cylinder when the piston enters the piston channel, preventing the piston from being torn by the end edge of the cylinder, saving manpower, and improving product quality and production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the pressing device provided in an embodiment of the present invention (guide portion not shown). Figure 2 yes Figure 1 A partial sectional view of the guide section of the intermediate pressure fitting device being assembled onto the cylinder; Figure 3 yes Figure 2 Cross-sectional view of the central guide section; Figure 4 yes Figure 1 A partial schematic diagram of the intermediate pressure assembly.

[0020] Explanation of reference numerals in the attached figures: 1. Installation section; 11. Pressing position; 12. Base; 13. Worktable; 2. Clamping section; 21. Gripper; 3. Guide section; 3a. Guide channel; 31. Installation end; 31a. Limiting groove; 32. Guide end; 4. Pressing section; 41. Pressing arm; 5. Clamping adjustment section; 51. Clamping lifting frame; 52. Clamping lifting arm; 6. Limiting guide post; 7. Pressing drive section; 8. Safety light curtain; 9. Alarm light; 10. Cylinder; 10a. Piston channel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] To address the technical problem that occurs when assembling non-pressurized fire extinguishing cylinders, where workers typically manually insert the piston into the cylinder, it is difficult to align the piston during manual assembly. This can lead to interference and obstruction of the piston's end edge by the cylinder's end edge, generating significant shearing force and potentially tearing the piston, thus reducing product quality and production efficiency, this invention provides a press-fitting device. This device ensures the piston is aligned and enters the piston channel, effectively preventing interference between the piston and the cylinder's end edge during entry and avoiding tearing of the piston, thereby improving product quality and production efficiency.

[0023] Please see Figures 1 to 3 , Figures 1 to 3 This is a schematic diagram of the pressing device in one embodiment of the present invention. The pressing device includes a mounting part 1, a clamping part 2, a guiding part 3, and a pressing part 4. The mounting part 1 has a pressing position 11. The clamping part 2 is disposed in the mounting part 1 and located at the pressing position 11, and is used to clamp the assembly having a piston channel 10a. The guiding part 3 has a guiding channel 3a and a mounting end 31 located at the end of the guiding channel 3a. The mounting end 31 is used to detachably assemble the assembly and to connect the guiding channel 3a to the piston channel 10a. The guiding channel 3a has a guiding end 32 spaced apart from the mounting end 31. The inner diameter of the guiding end 32 gradually decreases in the direction close to the mounting end 31. The pressing part 4 is movably disposed in the mounting part 1 and can move closer to or away from the pressing position 11 when it is moving. When it is close to the pressing position 11, it extends into the piston channel 10a from the guiding end 32.

[0024] In the press-fitting device provided by the present invention, the cylinder 10 (i.e., the assembly part) is first clamped by the clamping part 2, and the piston channel 10a of the cylinder 10 is arranged along the movement direction of the press-fitting part 4. Then, the mounting end 31 of the guide part 3 is assembled to the end of the cylinder 10, so that the guide channel 3a of the guide part 3 connects to the piston channel 10a. Then, the piston is placed on the guide end 32. Since the inner diameter of the guide end 32 is gradually reduced towards the mounting end 31, the outer diameter of the piston can fall between the maximum inner diameter and the minimum inner diameter of the guide end 32.

[0025] Thus, when the pressing part 4 moves toward the pressing position 11, it can press against the piston inside the guide end 32 and make the piston move toward the piston channel 10a in the direction of the gradually narrowing inner diameter of the guide end 32. Since the guide channel 3a connects to the piston channel 10a, it ensures that the piston is centered and enters the piston channel 10a, effectively avoiding interference between the piston and the end edge of the cylinder 10 when the piston enters the piston channel 10a, preventing the piston from being torn by the end edge of the cylinder 10, saving manpower, and improving product quality and production efficiency.

[0026] It should be noted that in this design, the assembly is the cylinder 10. The pressing part 4 moves vertically relative to the mounting part 1. Furthermore, the guide part 3 can be detachably mounted on the assembly via bolts, hooks and loops, or other means.

[0027] In one embodiment, a limiting groove 31a is provided on the side of the mounting end 31 away from the guide end 32. The inner diameter of the limiting groove 31a is larger than the inner diameter of the guide channel 3a and connects to the end of the guide channel 3a near the mounting end 31 for the insertion of the end of the fitting.

[0028] In this embodiment, the limiting groove 31a of the guide part 3 is directly sleeved on the upper end of the cylinder 10, that is, the guide part 3 and the cylinder 10 are detachably assembled through the limiting groove 31a, which is simple in structure and easy to operate. In addition, it should be understood that in this solution, the guide channel 3a includes a tapered section and a straight section along the direction close to the cylinder 10, and the inner diameter of the straight section is the same as the inner diameter of the piston channel 10a.

[0029] In one embodiment, the pressing device further includes a magnetic suction element and an adsorption element, one of which is disposed on the guide portion 3 and the other is disposed on the assembly part, and the magnetic suction element and the adsorption element are magnetically adsorbed.

[0030] In this embodiment, when the upper end of the cylinder 10 is inserted into the limiting groove 31a of the guide portion 3, the magnetic attracting component and the adsorption component are also magnetically attracted to each other, thereby improving the installation stability of the guide portion 3 and the cylinder 10. It should be noted that the magnetic attracting component and the adsorption component can be set as two magnets with opposite magnetic properties, or one of them can be set as a magnet and the other as a magnetically attractable metal.

[0031] It should be noted that the clamping part 2 can be configured as a robotic arm, an elastic clamp, or other forms.

[0032] In one embodiment, the clamping part 2 includes a clamping drive part and two jaws 21. The two jaws 21 are located at the pressing position 11 and can move closer and further away from each other. The clamping drive part is located in the mounting part 1 and is connected to the two jaws 21. It is used to drive the two jaws 21 to move closer and further away from each other and to clamp the assembly when they move closer to each other.

[0033] In this embodiment, the clamping drive unit drives the two grippers 21 to move closer together to clamp the cylinder 10, thereby fixing the cylinder 10 on the mounting part 1. It should be noted that the clamping drive unit can be configured as two linear motors, drive cylinders, or hydraulic rods to drive the two grippers 21 to move closer and further apart, respectively.

[0034] In one embodiment, the clamping part 2 is movable relative to the mounting part 1, and its direction of movement is the same as that of the pressing part 4; the pressing device also includes a clamping adjustment part 5, which is mounted on the mounting part 1 and connected to the clamping part 2, for driving the clamping part 2 to move relative to the mounting part 1.

[0035] In this embodiment, the height of the clamping part 2 can be flexibly adjusted to ensure that the clamping part 2 can clamp the middle position of the cylinder 10, thereby improving the stability of the cylinder 10, preventing accidental movement of the cylinder 10 during the pressing process, and improving the assembly quality. Furthermore, it can be applied to cylinders 10 of different lengths, improving versatility.

[0036] It should be noted that, in one embodiment, the clamping adjustment part 5 is configured as a lifting drive cylinder, hydraulic cylinder or other form.

[0037] In another embodiment, the clamping adjustment part 5 includes a clamping lifting frame 51, two clamping lifting arms 52, and at least two sets of adjusting screws and locking nuts. The two clamping lifting arms 52 are installed in the mounting position and extend along the movement direction of the pressing part 4. The clamping lifting frame 51 has two guide grooves at both ends. The side of the guide groove away from the other guide groove is open and has a mounting hole that passes through the guide groove. The diameter of the mounting hole is larger than the outer diameter of the adjusting screw. The guide grooves at both ends are respectively for the two clamping lifting arms 52 to pass through. The two sets of adjusting screws are respectively inserted into the two mounting holes, and the locking nuts are screwed into the adjusting screws. By tightening or loosening the adjusting screws, the sidewalls of the guide grooves are loosened from or tightened around the clamping lifting arms 52, thereby realizing the height adjustment of the clamping lifting frame 51, and the clamping part 2 is placed on the clamping lifting frame 51.

[0038] It should be noted that the mounting section 1 can be configured as a rack, mounting base or other form.

[0039] In one embodiment, the mounting part 1 includes a base 12, a worktable 13 and a displacement driving part. The worktable 13 is mounted on the base 12 and can move horizontally relative to the base 12. The displacement driving part is located on the base 12 and connected to the worktable 13, and is used to drive the worktable 13 to move horizontally relative to the base 12. The pressing position 11 is located on the worktable 13 and the pressing part 4 is movably located on the base 12.

[0040] In this embodiment, the pressing part 4 is disposed on the base 12, and the clamping part 2 is disposed on the worktable 13, thereby enabling flexible adjustment of the relative position between the cylinder 10 and the pressing part 4 to ensure that the pressing part 4 can be aligned with the piston channel 10a. It should be noted that a slide rail and a slide groove are provided between the worktable 13 and the base 12, and the displacement driving part can be configured as a displacement driving hydraulic cylinder, pneumatic cylinder or linear motor.

[0041] In one embodiment, the pressing device further includes a limiting plate, which is disposed on the mounting part 1 and located at the pressing position 11, and is provided with an annular groove. The axial direction of the annular groove is the same as the movement direction of the pressing part 4, for inserting the fitting parts.

[0042] In this embodiment, the lower end of the cylinder 10 is inserted into the annular groove of the workbench 13 to achieve the initial positioning of the cylinder 10 and the workbench 13, which facilitates the clamping part 2 to clamp the cylinder 10 and improves the assembly efficiency.

[0043] In one embodiment, the limiting plate includes an outer ring and a bearing. The outer ring is disposed on the mounting part 1, and the bearing is rotatably mounted on the mounting part 1 and located inside the outer ring, forming an annular groove with the outer ring at a distance.

[0044] In this embodiment, when the cylinder 10 is inserted into the annular groove, it can rotate relative to the worktable 13 with the bearing, thus improving its practicality.

[0045] In one embodiment, the press-fitting device further includes a limiting guide post 6, which is disposed in the mounting part 1 and located in the press-fitting position 11. When the clamping part 2 clamps the fitting, the limiting guide post 6 can extend into the piston channel 10a to stop the piston.

[0046] In this embodiment, after the pressing part 4 presses the piston from the guide channel 3a into the piston channel 10a, in order to prevent the piston from being excessively pressed to the other end of the cylinder 10, the limiting guide post 6 is provided as above to prevent the piston from moving excessively downward and to ensure that the piston is in a suitable position in the cylinder 10.

[0047] It should be noted that the pressing part 4 can be configured as a pressing block, pressing plate or other forms.

[0048] In one embodiment, please refer to Figure 4The pressing part 4 includes multiple pressing arms 41, which are of different sizes and can be selectively mounted on the mounting part 1. When each pressing arm 41 is mounted on the mounting part 1, it can approach or move away from the pressing position 11, and when it approaches the pressing position 11, it extends from the guide end 32 into the piston channel 10a.

[0049] In this embodiment, multiple sizes of pressing arms 41 are provided, so that the corresponding size of pressing arm 41 can be selected according to actual needs to press different sizes of cylinders 10, thereby improving practicality. Correspondingly, multiple sizes of guide parts 3 can be provided.

[0050] It should be noted that each pressing arm 41 and the mounting part 1 can be detachably assembled using bolts, clips, or pins. Furthermore, the guide part 3 can be configured as a guide ring, guide seat, or guide frame with the aforementioned guide channel 3a.

[0051] In one embodiment, the pressing device further includes a pressing drive 7, which is disposed on the mounting part 1 and connected to the pressing part 4, for driving the pressing part 4 to move closer to and away from the pressing position 11.

[0052] In this embodiment, the pressing drive unit 7 drives the pressing unit 4 to rise and fall, facilitating automation of the device and further improving production efficiency. It should be noted that the pressing drive unit 7 can be configured as a hydraulic cylinder, pneumatic cylinder, or electric actuator.

[0053] In addition, in this embodiment, safety light curtains 8 are provided on both sides of the pressing position 11, and alarm lights 9 are provided to sound an alarm when the worker's arm is inserted into the pressing position 11 during the pressing process.

[0054] To better understand this invention, the following is combined with... Figures 1 to 4 The technical solution of the present invention will be described in detail below: In this scheme, before pressing the piston, the cylinder 10 is first placed in the annular groove of the worktable 13, and then the clamping jaw 21 is moved to stably hold the cylinder 10. The worktable 13 is then moved until the piston channel 10a of the cylinder 10 is aligned with the pressing arm 41. Then, the guide part 3 is sleeved on the upper end of the cylinder 10 via the limiting groove 31a, and the piston is placed in the guide end 32 of the guide part 3. Finally, the pressing arm 41 is driven to move towards the cylinder 10 until the pressing arm 41 sends the piston from the guide channel 3a into the piston channel 10a and is stopped by the limiting guide post 6. At this time, the piston is sent into the preset position, and finally, the pressing arm 41 is withdrawn to complete the piston pressing.

[0055] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pressing device, characterized in that, include: The mounting section has a press-fit position; A clamping part is provided on the mounting part and located at the press-fit position for clamping an assembly with a piston channel; A guide portion having a guide channel and a mounting end located at the end of the guide channel, the mounting end being detachably mounted to the assembly and connecting the guide channel to the piston channel, the guide channel having a guide end spaced apart from the mounting end, the inner diameter of the guide end tapering towards the mounting end; and The pressing part is movably disposed on the mounting part, and can move closer to or further away from the pressing position when moving, and extends into the piston channel from the guide end when moving closer to the pressing position.

2. The pressing device according to claim 1, characterized in that, A limiting groove is provided on the side of the mounting end away from the guide end. The inner diameter of the limiting groove is larger than the inner diameter of the guide channel and is connected to the end of the guide channel near the mounting end, for inserting the end of the fitting.

3. The pressing device according to claim 2, characterized in that, The pressing device further includes a magnetic suction element and an adsorption element. One of the magnetic suction element and the adsorption element is disposed on the guide portion, and the other is disposed on the assembly part. The magnetic suction element and the adsorption element can be magnetically attracted to each other.

4. The pressing device according to claim 1, characterized in that, The clamping part includes a clamping drive part and two jaws. The two jaws are located at the pressing position and can move closer and further away from each other. The clamping drive part is located in the mounting part and is connected to the two jaws. It is used to drive the two jaws to move closer and further away from each other, and to clamp the assembly when they move closer to each other.

5. The pressing device according to claim 1, characterized in that, The clamping part is movable relative to the mounting part, and its direction of movement is the same as that of the pressing part; The pressing device further includes a clamping adjustment part, which is installed on the mounting part and connected to the clamping part, for driving the clamping part to move relative to the mounting part.

6. The pressing device according to claim 1, characterized in that, The mounting part includes a base, a worktable, and a displacement driving part. The worktable is mounted on the base and can move horizontally relative to the base. The displacement driving part is located on the base and connected to the worktable, and is used to drive the worktable to move horizontally relative to the base. The pressing position is located on the workbench, and the pressing part is movably mounted on the base.

7. The pressing device according to claim 1, characterized in that, The pressing device further includes a limiting plate, which is disposed on the mounting part and located at the pressing position, and is provided with an annular groove. The axial direction of the annular groove is the same as the movement direction of the pressing part, and is used for inserting the fitting parts.

8. The pressing device according to claim 1, characterized in that, The pressing device further includes a limiting guide post, which is disposed in the mounting part and located in the pressing position. When the clamping part clamps the assembly, the limiting guide post can extend into the piston channel to stop the piston.

9. The pressing device according to claim 1, characterized in that, The pressing part includes multiple pressing arms of different sizes, which can be selectively assembled to the mounting part. When each pressing arm is assembled to the mounting part, it can be close to or far from the pressing position, and when it is close to the pressing position, it extends into the piston channel from the guide end.

10. The pressing device according to claim 1, characterized in that, The pressing device further includes a pressing drive unit, which is located on the mounting part and connected to the pressing part, for driving the pressing part to move closer to and away from the pressing position.

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