Spin Sealing Device

Abstract

The present application relates to a spinning sealing device, belonging to the technical field of gas spring manufacturing. The present application provides a spinning sealing device, comprising: a frame; a spinning sealing mechanism slidably mounted on the frame in the front and rear directions; a first propulsion mechanism mounted on the frame and capable of propelling the spinning sealing mechanism forward to a first preset position; a positioning mechanism arranged on the front side of the spinning sealing mechanism for clamping and positioning a tube body; when the positioning mechanism clamps the tube body, the spinning sealing mechanism seals the tube body at the first preset position. Compared with the traditional manual sealing method, the spinning sealing device in the embodiment of the present application can clamp the positioning mechanism and mechanically seal the tube body, improving the sealing accuracy and qualification rate, and also improving the production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of gas spring manufacturing, and more particularly, to a spinning sealing device. Background Art

[0002] A gas spring is a component that can achieve functions such as support, buffering, braking, height and angle adjustment. In construction machinery, it is mainly applied to parts such as covers and doors. During the assembly process of the gas spring, after fitting accessories such as oil seals, guide seats, and washers into the tube body, it is necessary to seal the opening side of the tube body to complete the mechanical assembly before inflation. However, in traditional gas spring assembly lines, manual sealing is still required, which not only has poor accuracy and low qualification rate, but also has very low production efficiency. Summary of the Invention

[0003] Therefore, this application proposes a spinning sealing device, which can mechanize the sealing process of the gas spring, improve the sealing accuracy and qualification rate, and also improve the production efficiency.

[0004] Some embodiments of this application propose a spinning sealing device, including: a frame; a spinning sealing mechanism, the spinning sealing mechanism is slidably mounted on the frame in the front-back direction; a first propulsion mechanism, the first propulsion mechanism is mounted on the frame and can propel the spinning sealing mechanism forward to a first preset position; a positioning mechanism, the positioning mechanism is arranged on the front side of the spinning sealing mechanism for clamping and positioning the tube body; when the positioning mechanism clamps the tube body, the spinning sealing mechanism seals the tube body at the first preset position.

[0005] Compared with the traditional manual sealing method, the spinning sealing device in the embodiments of this application can clamp the positioning mechanism and mechanize the sealing of the tube body, improve the sealing accuracy and qualification rate, and also improve the production efficiency.

[0006] In addition, the spinning sealing device according to the embodiments of this application also has the following additional technical features:

[0007] According to some embodiments of this application, the spinning sealing mechanism includes: a movable frame, the movable frame is slidably engaged with the frame; a motor, the motor is mounted on the frame; a die core, the die core is mounted on the execution end of the motor, and the motor can drive the die core to rotate; a sliding sleeve, the sliding sleeve is slidably sleeved outside the die core, and the sliding sleeve is slidably mounted on the movable frame in the front-back direction; a second propulsion mechanism, the second propulsion mechanism is mounted on the movable frame and can propel the sliding sleeve forward to a second preset position, and the sliding sleeve and the die core cooperate to jointly achieve sealing. This form of spinning sealing mechanism is not only simple in structure, but also stable and reliable.

[0008] According to some embodiments of the present application, the spin welding sealing mechanism includes: a limiting clamping arm, which is installed on the movable frame and is used to protect the front end of the spin welding sealing mechanism. By arranging the limiting clamping arm, it can avoid injuring workers when the sliding sleeve accidentally slips out, and improve the safety and reliability of the entire spin welding sealing device.

[0009] According to some embodiments of the present application, the die core includes: a die core body; a plurality of roller assemblies, which are circumferentially arranged at intervals on the same circumference of the die core body. Each roller assembly radially penetrates the pipe wall of the die core body. One end of the roller assembly is used to abut against the sliding sleeve, and the other end is used for sealing. Sealing can be achieved through the roller assembly, which not only has a simple structure, but also is stable and reliable, and has a long service life.

[0010] According to some embodiments of the present application, the inner surface of the sliding sleeve is provided with a spin welding surface; when the sliding sleeve is located at the second preset position, the roller assembly acts on the pipe body. By corresponding the spin welding surface to the second preset position, it can ensure that the roller assembly acts on the pipe body.

[0011] According to some embodiments of the present application, the roller assembly includes a bracket, a first roller, a second roller and a spring. The first roller and the second roller are respectively installed at both ends of the bracket. The spring is sleeved on the bracket and abuts between the first roller and the second roller. The first roller is used to cooperate with the sliding sleeve, and the second roller is used to act on the pipe body. By radially moving the roller assembly, feeding or retracting the tool can be achieved, and the structure is simple and easy to maintain and replace.

[0012] According to some embodiments of the present application, the number of the roller assemblies is three. Arranging three roller assemblies can not only improve the sealing efficiency, but also relieve the wear of the roller assemblies, thereby prolonging the service life of the roller assemblies.

[0013] According to some embodiments of the present application, the spin welding sealing device further includes a position sensor, which is arranged on the machine frame and is used to detect whether the pipe body clamped by the positioning mechanism reaches the processing position. Through this arrangement form, automatic sealing operation can be realized and the sealing quality of the pipe body can be improved.

[0014] According to some embodiments of the present application, the positioning mechanism includes: an anti-rotation chuck assembly, which is used to clamp the tail of the pipe body to prevent the pipe body from rotating; a clamping assembly, which is used to clamp the pipe body. Through this arrangement form, the pipe body can be positioned both axially and circumferentially, so as to facilitate accurate necking.

[0015] According to some embodiments of the present application, the clamping assembly includes a chain conveying mechanism and a pressing mechanism. The chain conveying mechanism is used to convey the pipe body to the processing position, and the pressing mechanism can jointly clamp the pipe body with the chain conveying mechanism. With this arrangement, it is convenient to load the pipe body onto the processing station, and after the necking is completed, it is transferred to the next station, and the axial center line position of the pipe body can be positioned.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the spin welding device provided by the embodiment of the present application;

[0019] Figure 2 Structural schematic diagram of a perspective view of the spin welding mechanism in the spin welding device provided by the embodiment of the present application;

[0020] Figure 3 Structural schematic diagram of another perspective view of the spin welding mechanism in the spin welding device provided by the embodiment of the present application;

[0021] Figure 4 For Figure 3 Partial enlarged view at A in

[0022] Figure 5 Schematic diagram of the roller assembly acting on the pipe body in the spin welding device provided by the embodiment of the present application;

[0023] Figure 6 Schematic diagram of the position of the roller assembly when the sliding sleeve is in the second preset position in the spin welding device provided by the embodiment of the present application;

[0024] Figure 7 Schematic diagram of the retraction state of the roller assembly when the sliding sleeve is reset in the spin welding device provided by the embodiment of the present application;

[0025] Figure 8 Structural schematic diagram of the roller assembly in the spin welding device provided by the embodiment of the present application;

[0026] Figure 9Schematic structural diagram of the gas spring applied to the spin welding sealing device provided by the embodiment of the present application.

[0027] Icon: 100 - Spin welding sealing device; 20 - Spin welding sealing mechanism; 21 - Movable frame; 22 - Motor; 23 - Die core; 24 - Slide sleeve; 241 - Spin welding surface; 25 - Second propulsion mechanism; 26 - Die core body; 261 - Guide cavity; 262 - Through hole; 27 - Roller assembly; 271 - Bracket; 272 - First roller; 273 - Second roller; 274 - Spring; 275 - First axis; 276 - Second axis; 28 - Limit clamping arm; 30 - First propulsion mechanism; 40 - Positioning mechanism; 41 - Anti - rotation chuck assembly; 42 - Clamping assembly; 421 - Chain conveying mechanism; 422 - Pressing mechanism; 50 - In - place sensor; 61 - First slide rail assembly; 700 - Gas spring; 710 - Tube body; 720 - Rod body; 730 - Washer; 740 - Oil seal; 750 - Guide seat; 760 - Flat head. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0030] Please refer to Figure 9 , in the description of the present application, taking the assembly process of the gas spring 700 as an example, the structure and working principle of the spin welding sealing device 100 of the embodiments of the present application will be elaborated.

[0031] The gas spring 700 includes a tube body 710, a rod body 720, a washer 730, an oil seal 740, a guide seat 750 and a flat head 760. And the spin welding sealing device 100 in the embodiments of the present application is used to spin - weld and form a mouth - closing at the front side of the tube body 710 after the rod body 720, the washer 730, the oil seal 740 and the guide seat are all installed in the tube body 710, so as to form an un - inflated gas spring.

[0032] Please refer to Figure 1The spinning sealing device 100 of the embodiment of the present application includes a frame (not shown in the figure), a spinning sealing mechanism 20, a first propulsion mechanism 30 and a positioning mechanism 40, and the spinning sealing mechanism 20, the first propulsion mechanism 30 and the positioning mechanism 40 are all installed on the frame. The spinning sealing mechanism 20 is slidably installed on the frame along the front-back direction, the first propulsion mechanism 30 can propel the spinning sealing mechanism 20 forward to the first preset position, and the positioning mechanism 40 is arranged on the front side of the spinning sealing mechanism 20, and is used to clamp and position the tube body 710. When the positioning mechanism 40 clamps the tube body 710, the spinning sealing mechanism 20 seals the tube body 710 at the first preset position.

[0033] Compared with the traditional manual sealing method, the spin-sealing device 100 in the embodiment of the present application can clamp the positioning mechanism 40 and mechanically seal the tube body 710, thereby improving the sealing accuracy and qualified rate, and also improving the production efficiency.

[0034] The structures and interconnected relationships of the various components of the spin-sealing device 100 according to the embodiment of the present application are described below.

[0035] The frame is used to install the spin sealing mechanism 20 , the first propulsion mechanism 30 and the positioning mechanism 40 .

[0036] The spin sealing mechanism 20 is used to seal the tube body 710 positioned by the positioning mechanism 40 .

[0037] Please refer to Figure 2 and Figure 3 , the specific structural form of a spin sealing mechanism 20 is exemplified below.

[0038] In some embodiments of the present application, the spin sealing mechanism 20 includes a movable frame 21 , a motor 22 , a mold core 23 , a sliding sleeve 24 and a second propulsion mechanism 25 .

[0039] The movable frame 21 and the frame are slidably matched along the front-rear direction through the first slide rail assembly 61, and the first propulsion mechanism 30 can drive the movable frame 21 to move along the front-rear direction.

[0040] The motor 22 is installed on the movable frame 21, the core 23 is rotatably supported on the movable frame 21 through a bearing seat, the core 23 is installed on the execution end of the motor, the output shaft of the motor 22 is connected to the core 23 through a coupling, and the motor 22 can drive the core 23 to rotate.

[0041] The sliding sleeve 24 is slidably mounted on the outer side of the mold core 23 , and the sliding sleeve 24 is slidably mounted on the movable frame 21 forward and backward.

[0042] The second propulsion mechanism 25 is installed on the movable frame 21, and the second propulsion mechanism 25 can drive the sliding sleeve 24 to slide back and forth. When the spinning sealing mechanism 20 is at the first preset position, the second propulsion mechanism 25 pushes the sliding sleeve 24 forward to the second preset position, and the sliding sleeve 24 cooperates with the die core 23 to jointly achieve sealing.

[0043] As an example form, two second propulsion mechanisms 25 are arranged, and the two second propulsion mechanisms 25 are respectively located on the left and right sides of the sliding sleeve 24, and the execution ends of the second propulsion mechanisms 25 are connected to the rear side of the sliding sleeve 24.

[0044] In some embodiments of the present application, both the first propulsion mechanism 30 and the second propulsion mechanism 25 are linear cylinders.

[0045] In other embodiments, the first propulsion mechanism 30 and the second propulsion mechanism 25 can also be linear guides or other linear drive mechanisms.

[0046] The following exemplifies a specific structural form of "the sliding sleeve 24 cooperates with the die core 23 to jointly achieve sealing".

[0047] Please refer to Figure 5 , the die core 23 includes a die core body 26 and a plurality of roller assemblies 27. The die core body 26 includes a guiding cavity 261 for inserting the pipe body 710. The die core body 26 is provided with a plurality of through holes 262 on the same circumference, and the through holes 262 penetrate through the pipe wall of the die core body 26, and the through holes 262 correspond to the roller assemblies 27 one by one. The plurality of roller assemblies 27 are circumferentially spaced on the die core body 26 on this circumference, and each roller assembly 27 radially penetrates through the corresponding through hole 262. One end of the roller assembly 27 is used to abut against the sliding sleeve 24, and the other end is used for sealing.

[0048] Please refer to Figure 6 and Figure 7 , the inner surface of the sliding sleeve 24 is provided with a spinning surface 241, and the spinning surface 241 is an inclined toroidal surface, and the radius D1 of the front side of the spinning surface is greater than the radius D2 of the rear side.

[0049] Please refer to Figure 3 , Figure 6 and Figure 7 , driven by the second propulsion mechanism 25, the sliding sleeve 24 slides forward, and the spinning surface 241 squeezes the roller assembly 27 to move radially inwards. When the sliding sleeve 24 moves to the second preset position, the roller assembly 27 acts on the pipe body 710 and is used for sealing.

[0050] In some embodiments of the present application, the number of the roller assemblies 27 is three, and the three roller assemblies 27 are circumferentially spaced along the same circumference.

[0051] In other embodiments, the number of roller assemblies 27 can be flexibly arranged according to the pipe diameter of the pipe body 710.

[0052] The roller assembly 27 is used for sealing.

[0053] Please refer to Figure 8 , in some embodiments of the present application, the roller assembly 27 includes a bracket 271, a first roller 272, a second roller 273 and a spring 274. The first roller 272 and the second roller 273 are respectively installed at both ends of the bracket 271. The spring 274 is sleeved on the bracket 271 and abuts between the first roller 272 and the second roller 273. The first roller 272 is used to cooperate with the sliding sleeve 24, and the second roller 273 is a hob for acting on the pipe body 710.

[0054] Please refer to Figure 4 and Figure 5 , when the sliding sleeve 24 slides forward, the spinning surface 241 presses the first roller 272, causing the bracket 271 to drive the second roller 273 to extend inward into the die core 23. The second roller 273 enters the guiding cavity 261 and acts on the pipe body 710. Driven by the motor 22, the die core 23 rotates, driving a plurality of roller assemblies 27 to rotate, realizing the sealing of the pipe body 710.

[0055] The spring 274 is installed in the through hole 262 and abuts between the first roller 272 and the second roller 273.

[0056] For example, a spring seat can be provided in the through hole 262, and both ends of the spring 274 are fixed to the spring seat. When the sliding sleeve 24 slides backward and leaves the second preset position, the first roller 272 is separated from the spinning surface 241, and the spring 274 pushes the first roller 272 to move outward, so that the second roller 273 retracts the tool and retracts into the through hole 262, ensuring that the pipe body 710 after necking smoothly leaves the guiding cavity 261.

[0057] It is easy to understand that when the spinning and sealing mechanism 20 is in the first preset position and the sliding sleeve 24 is in the second preset position, the position of the roller assembly 27 corresponds to the necking position of the pipe body 710.

[0058] Please refer to Figure 4 , the wheel surface of the first roller 272 is arranged along the first axis 275, the wheel surface of the second roller 273 is arranged along the second axis 276, the first axis 275 extends vertically, the second axis 276 is inclined forward relative to the first axis 275, and an included angle β is formed between the first axis 275 and the second axis 276.

[0059] Through this arrangement form, when sealing the pipe body 710, the second roller 273 obliquely spins the pipe orifice of the pipe body 710, which can relieve the wear of the second roller 273 and extend the effective service life of the second roller 273.

[0060] Please refer to Figure 2 , further, the spin welding sealing mechanism 20 further includes a limiting holding arm 28. The limiting holding arm 28 is installed on the movable frame 21 and is used to protect the front end of the spin welding sealing mechanism 20.

[0061] The limiting holding arms 28 protect the sliding sleeves 24 from the left and right sides respectively, and expose the entrance of the guiding cavity 261 for the tube body 710 to enter. By arranging the limiting holding arms 28, it is possible to prevent the workers from being injured when the sliding sleeves 24 accidentally come off, and the safety and reliability of the entire spin welding sealing device 100 are improved.

[0062] Please refer to Figure 1 , the positioning mechanism 40 is used to position the tube body 710 so that the spin welding sealing mechanism 20 can close the mouth of the tube body 710.

[0063] In some embodiments of the present application, the positioning mechanism 40 includes an anti-rotation chuck assembly 41 and a clamping assembly 42. The clamping assembly 42 clamps the middle section of the tube body 710, and the anti-rotation chuck assembly 41 clamps the tail of the tube body 710 to prevent the tube body 710 from rotating.

[0064] With this arrangement form, the tube body 710 can be positioned both axially and circumferentially, so as to accurately close the mouth.

[0065] Further, the clamping assembly 42 includes a chain conveying mechanism 421 and a pressing mechanism 422. The chain conveying mechanism 421 is used to convey the tube body 710 to the processing position, and the pressing mechanism 422 can jointly clamp the tube body 710 with the chain conveying mechanism 421.

[0066] For example, the chain conveying mechanism 421 is provided with a clamping position, and the clamping position can clamp the tube body 710. The pressing mechanism 422 includes a pressing cylinder and a lower pressing plate. When the pressing cylinder presses down, the lower pressing plate presses the tube body 710 and presses the tube body 710 against the clamping position.

[0067] With this arrangement form, it is convenient for the tube body 710 to be loaded onto the processing station, and to be transferred to the next station after the mouth closing is completed, and the axial center line position of the tube body 710 can be positioned. By reasonably arranging the clamping positions of the spin welding sealing mechanism 20 and the clamping assembly 42, the axial center line of the tube body 710 clamped by the positioning mechanism 40 can be made to coincide with the rotation axis of the spin welding sealing mechanism 20 to ensure the mouth closing quality.

[0068] Please refer to Figure 1 , optionally, the spin welding sealing device 100 further includes a position sensor 50. The position sensor 50 is arranged on the frame and is used to detect whether the tube body 710 clamped by the positioning mechanism 40 reaches the processing position.

[0069] It is easy to understand that the in-place sensor 50 is arranged between the positioning mechanism 40 and the spin welding and sealing mechanism 20. When the tube body 710 is positioned at the processing position, the in-place sensor 50 can detect whether the distance L1 from the opening of the tube body 710 to the in-place sensor 50 meets the requirements. If L1 meets the requirements, it is determined that the tube body 710 has reached the processing position, and the first propulsion mechanism 30 responds and starts to propel the spin welding and sealing mechanism 20 forward, and the motor 22 responds and starts to drive the die core 23 to rotate.

[0070] The working principle of the spin welding and sealing device 100 according to the embodiment of the present application is as follows:

[0071] The chain conveying mechanism 421 conveys the tube body 710 to the processing station;

[0072] The pressing mechanism 422 presses the tube body 710 onto the clamping position;

[0073] The anti-rotation chuck assembly 41 clamps the tail of the tube body 710;

[0074] The in-place sensor 50 detects that the tube body 710 has reached the processing station;

[0075] The first propulsion mechanism 30 drives the spin welding and sealing mechanism 20 to move to the first preset position, the motor 22 drives the die core 23 to rotate, and the tube body 710 enters the guiding cavity 261;

[0076] When the spin welding and sealing mechanism 20 reaches the first preset position, the second propulsion mechanism 25 drives the sliding sleeve 24 to move to the second preset position;

[0077] When the sliding sleeve 24 reaches the second preset position, the roller assembly 27 acts on the opening of the tube body 710 and spins out a necking structure;

[0078] The second propulsion mechanism 25 drives the sliding sleeve 24 to reset;

[0079] The first propulsion mechanism 30 drives the spin welding and sealing mechanism 20 to reset;

[0080] The anti-rotation chuck assembly 41 releases the tail of the tube body 710;

[0081] The pressing mechanism 422 releases the tube body 710;

[0082] The chain conveying mechanism 421 drives the tube body 710 to move to the next station.

[0083] Among them, when the spin welding and sealing device 100 is applied to the assembly line, the motor 22 can run continuously.

[0084] Compared with the traditional manual sealing method, the spinning sealing device 100 in the embodiments of the present application can clamp and position the pipe body 710, and use the roller assembly 27 for spinning sealing, which can realize automatic sealing operation, improve the sealing accuracy and qualification rate, and also improve the production efficiency.

[0085] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0086] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spinning sealing device, characterized in that, Comprising: Frame; Spinning sealing mechanism, which is slidably mounted on the frame in the front and rear directions; First propulsion mechanism, which is mounted on the frame and can propel the spinning sealing mechanism forward to a first preset position; Positioning mechanism, which is arranged on the front side of the spinning sealing mechanism and is used for clamping and positioning the pipe body; When the positioning mechanism clamps the pipe body, the spinning sealing mechanism seals the pipe body at the first preset position; The spinning sealing mechanism includes: Movable frame, which is slidably engaged with the frame; Motor, which is mounted on the frame; Die core, which is mounted on the execution end of the motor, and the motor can drive the die core to rotate; Sliding sleeve, which is slidably sleeved outside the die core, and the sliding sleeve is slidably mounted on the movable frame in the front and rear directions; Second propulsion mechanism, which is mounted on the movable frame and can propel the sliding sleeve forward to a second preset position, and the sliding sleeve cooperates with the die core to jointly achieve sealing; The spinning sealing mechanism includes: Limit clamping arm, which is mounted on the movable frame and is used for protecting the front end of the spinning sealing mechanism; The die core includes: Die core body; Multiple roller assemblies, which are circumferentially spaced on the same circumference on the die core body, each roller assembly radially penetrates the pipe wall of the die core body, one end of the roller assembly is used for abutting against the sliding sleeve, and the other end is used for sealing.

2. The spin welding sealing device according to claim 1, wherein The inner surface of the sliding sleeve is provided with a spinning surface; when the sliding sleeve is at the second preset position, the roller assembly acts on the pipe body.

3. The spin welding sealing device according to claim 1, wherein The roller assembly includes a bracket, a first roller, a second roller and a spring. The first roller and the second roller are respectively mounted at both ends of the bracket. The spring is sleeved on the bracket and abuts between the first roller and the second roller. The first roller is used for cooperating with the sliding sleeve, and the second roller is used for acting on the pipe body.

4. The spin welding sealing device according to claim 1, wherein, The number of the roller assemblies is three.

5. The spin welding sealing device according to claim 1, wherein The spinning sealing device further includes a position sensor, which is arranged on the frame and is used for detecting whether the pipe body clamped by the positioning mechanism reaches the processing position.

6. The spin welding sealing device according to claim 1, characterized in that The positioning mechanism includes: Anti-rotation chuck assembly, which is used for clamping the tail of the pipe body to prevent the pipe body from rotating; Clamping assembly, which is used for clamping the pipe body.

7. The spin welding sealing device according to claim 6, wherein, The clamping assembly includes a chain conveying mechanism and a pressing mechanism. The chain conveying mechanism is used for conveying the pipe body to the processing position, and the pressing mechanism can jointly clamp the pipe body with the chain conveying mechanism.

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