CN220312387U - Piston assembling device - Google Patents

Abstract

The utility model provides a piston assembling device, which comprises a sealing piston loading assembly and an unlocking assembly, wherein the unlocking assembly is used for releasing the position fixation of a sealing ring after a piston and a sealing ring are installed in place, the piston assembling device also comprises a shell installation assembly and a press-fitting assembly for pressing the sealing ring of the piston into a workpiece shell, the sealing piston loading assembly comprises a guide sleeve sleeved on the outer edge of the piston to be assembled, and a sealing ring clamping jaw arranged on one side of the guide sleeve, the sealing ring clamping jaw comprises a press control end and a clamping end, the clamping end is elastically clamped and matched with the front end of the outer edge of the piston in the guide sleeve, the sealing ring to be assembled is pressed on the annular groove position of the outer edge of the piston in the process of assembling the piston, and the unlocking assembly comprises an unlocking cylinder pressing rod which is matched with the press control end of the sealing ring clamping jaw.

Description

Piston assembling device

Technical Field

The utility model relates to the technical field of mechanical automobile accessory machining, in particular to a piston assembling device.

Background

The assembly of the sealing piston is a heavy duty in the assembly process of the tensioner product and is the core process in the manufacturing process. When the plastic sealing ring on the piston is assembled on the piston, the plastic sealing ring is larger than the outer diameter of the piston in a free state and is also larger than the inner diameter of the hand piece shell.

The existing assembly process generally adopts the following assembly modes: the piston to be assembled is specially arranged, the guide sleeve moves downwards to be in contact with the end face of the hand piece shell in the assembly process, then the piston with the sealing ring is placed in the guide sleeve, the guide sleeve is in taper design, the diameter of the minimum end is larger than the outer diameter of the piston and smaller than the inner diameter of the hand piece shell, and the press-fitting mechanism moves downwards to be in contact with the piston and continuously moves downwards to press-fit the piston downwards. The sealing ring is contracted and reduced towards the inside of the piston under the taper action of the guide sleeve, and moves downwards to the clamping spring device area in the shell under the action of the pressing mechanism. At this time, because the aperture of the shell is bigger than the diameter of the sealing ring when the sealing ring just enters the shell, the plastic sealing ring is restored to a natural state, the outer diameter of the sealing ring is bigger than the inner diameter of the shell, and then the sealing ring is pressed down continuously, the sealing ring can be blocked, or the situation that the sealing ring is extruded by the aluminum shell to cut off part of the sealing ring easily occurs, thereby causing the loss of functions or the reduction of functions of the product. The problem of damage to the seal ring caused by such press fitting processes has been a problem in the art, resulting in low yields of tensioner products.

In summary, the sealing ring is easy to be damaged in the processing process of the existing sealing type piston tensioner product, so that the technical problems of poor sealing function or lost function of the product are caused.

Disclosure of Invention

The utility model aims to solve the technical problems that a sealing ring is easy to damage in the processing process of the existing sealing type piston tensioner product, and the sealing function of the product is poor or the function is lost.

In order to solve the problems, the utility model provides a piston assembling device, which is used for assembling a sealing type piston tensioner and comprises a sealing piston loading assembly used for supporting and placing a piston to be assembled and a sealing ring, and an unlocking assembly used for being matched with the sealing ring piston loading assembly, wherein the unlocking assembly is used for fixing the position of the sealing ring after the piston and the sealing ring are assembled in place, the piston assembling device also comprises a shell mounting assembly used for being arranged on a hand piece shell and a press-mounting assembly used for pressing the sealing ring of the piston to be assembled into the hand piece shell, the sealing piston loading assembly comprises a guide sleeve sleeved on the outer edge of the piston to be assembled, and a sealing ring clamping jaw arranged on one side of the guide sleeve, the sealing ring clamping jaw comprises a press control end and a clamping end, the clamping end is elastically clamped and matched with the front end of the outer edge of the piston assembled in the guide sleeve, the annular groove position of the sealing ring to be assembled on the outer edge of the piston is used for pressing the sealing ring in the process of the piston in the assembling of the piston, the unlocking assembly comprises an unlocking cylinder and a pressing rod which is in driving connection with the unlocking cylinder, the pressing rod is matched with the press control end of the sealing ring and is used for pressing the clamping jaw of the sealing ring to be pressed on the outer edge of the sealing ring when the piston clamping jaw is released from the clamping jaw.

According to the piston assembling device, the existing piston and sealing ring assembling design is improved, the sealing ring clamping jaw is arranged on one side of the guide sleeve, the sealing ring to be assembled is directly pressed on the outer peripheral surface of the piston to be assembled through the structure of the clamping jaw, the sealing ring is protected through the sealing ring clamping jaw in the whole piston assembling process, the sealing ring is always in a compressed shrinkage state in the process, the sealing ring is not easy to scratch in the assembling process, an unlocking component matched with the sealing ring clamping jaw is arranged, the sealing ring and the sealing ring clamping jaw synchronously extend into the shell in the piston assembling process until the sealing ring reaches a preset position, the pressing control end of the sealing ring clamping jaw is pressed through the unlocking cylinder driving pressing rod, the limiting of the sealing ring is released by the clamping end, the sealing ring is installed in place, the sealing ring is effectively protected, the possibility that the sealing ring is damaged in the piston assembling process is greatly reduced, and the technical problem that the sealing function of a product is poor or lost due to the fact that the sealing ring is easy to damage in the existing sealing piston tensioner product in the machining process is solved.

As a preferable scheme, the sealing ring clamping jaw further comprises a clamping jaw base and a torsion spring connected with the clamping jaw base, wherein the torsion spring is arranged between the pressing control end and the clamping end, and an arc-shaped groove for limiting the sealing ring to be installed is formed in one side of the end of the clamping end, adjacent to the guide sleeve, of the clamping end. The structural design of the clamping jaw of the sealing ring is optimized, elastic clamping is realized, and the clamping is firm and loose easily.

As the preferable scheme, sealed piston loading subassembly still includes the horizontal slide rail mechanism that is used for adjusting the piston horizontal position that waits to adorn, horizontal slide rail machine includes two track pieces of slip butt joint, the clamping jaw base of sealing ring clamping jaw with the uide bushing is all connected with one of them track piece through the mounting bracket. The structural design of the sealing piston loading assembly is optimized, the horizontal alignment of the piston and the hand piece shell is ensured through the horizontal sliding rail mechanism, and the assembly effect is ensured.

As the preferable scheme, the press-fitting assembly comprises a press head structure used for pressing a piston to be assembled into a hand piece shell fixed by the shell installation assembly, the press head structure is matched with the piston to be assembled in the guide sleeve, and the press-fitting assembly further comprises an electric cylinder structure used for driving the vertical feeding press-fitting action of the press head mechanism. The design of the press-fitting assembly is optimized, the press-fitting action is carried out by driving the press head through the electric cylinder, and the press-fitting feeding amount is accurate and controllable.

Preferably, the pressure head structure is connected with the unlocking cylinder through a synchronous frame, and the two are driven by the electric cylinder structure to synchronously and vertically feed. The linkage of the pressure head structure and the unlocking component is optimized, and the consistency of the vertical displacement of the unlocking component and the sealing ring clamping jaw is ensured.

As an optimal scheme, a pressure sensor is arranged between the output end of the electric cylinder structure and the synchronous frame and used for monitoring the press-fit resistance in the press-fit process and judging whether the press-fit process receives additional resistance or not. The induction of the device in the press fitting process is optimized, and whether the sealing ring is good in structure is sensed through pressure monitoring.

As a preferred scheme, the shell mounting assembly comprises a opponent fixture for placing the opponent shell at a preset position angle and an opponent clamping mechanism for clamping the opponent shell together with the opponent fixture, wherein the opponent fixture is connected with a lifting cylinder for driving the opponent fixture to vertically feed and is used for being matched with the press-fitting assembly. The structure of the shell installation assembly is optimized, and the complete execution of the press-fitting process is easier to realize control.

As a preferable scheme, the piston loading assembly further comprises a detection camera for photographing and detecting whether the sealing ring to be mounted is located at a preset position on the piston to be mounted. The initial control of the press-fitting process is optimized, and whether the sealing ring is at the correct position on the piston is judged through camera detection, so that the sealing ring is ensured to be accurate in place in the subsequent process.

As a preferable scheme, a chamfer flaring structure is arranged at the opening position of the upper end of the guide sleeve so as to facilitate the entering of the piston to be installed. The guide sleeve structure is optimized, so that the piston is more easily installed in the guide sleeve.

Drawings

FIG. 1 is a schematic view of the overall structure of a piston assembly device according to the present utility model;

fig. 2 is a partial schematic view of the piston assembly of fig. 1.

In fig. 1 and 2, wherein:

1. a seal piston loading assembly; 1-1, a guide sleeve; 1-2, clamping jaws of a sealing ring; 1-3, detecting a camera; 1-4, a horizontal sliding rail mechanism; 1-5, clamping jaw base; 1-6, pressing the control end; 1-7, torsion springs; 1-8, clamping ends; 1-9, mounting rack; 2. press-fitting the assembly; 2-1, an electric cylinder structure; 2-2, a pressure sensor; 2-3, a pressure head structure; 3. a housing mounting assembly; 3-1, a hand piece clamping mechanism; 3-2, hand piece tooling; 3-3, lifting the cylinder; 4. unlocking the assembly; 4-1, unlocking the cylinder; 4-2, pressing rods; 5. a seal ring; 6. and (3) a piston.

Detailed Description

The following description of the present utility model will be made clearly and fully, and it is apparent that the embodiments described are some, but not all, of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of an overall structure of a piston assembling device according to the present utility model; fig. 2 is a partial schematic view of the piston assembly of fig. 1.

The piston assembling device provided by the embodiment is used for assembling a sealed piston tensioner and comprises a sealed piston loading assembly 1 for supporting and placing a piston 6 to be assembled and a sealing ring 5, an unlocking assembly 4 for matching the sealed piston loading assembly, a shell mounting assembly 3 for placing a hand piece shell and a press-fitting assembly 2 for pressing the sealing ring 5 of the piston 6 to be assembled into the hand piece shell, wherein the sealed piston loading assembly 1 comprises a guide sleeve 1-1 sleeved on the outer edge of the piston 6 to be assembled, a sealing ring clamping jaw 1-2 arranged on one side of the guide sleeve 1-1, the sealing ring clamping jaw 1-2 comprises a pressing control end 1-6 and a clamping end 1-8, the clamping end 1-8 is in elastic clamping fit with the front end of the outer edge of the piston 6 assembled into the guide sleeve 1-1, the unlocking assembly 4 is used for pressing the sealing ring 5 to be assembled into the annular groove position of the piston 6 in the assembling process of the piston 6, the unlocking assembly 4 comprises an unlocking cylinder 4-1 and a pressing rod 4-2 connected with the unlocking cylinder 4-1 in a driving mode, and the pressing rod 4-2 connected with the unlocking cylinder 4-1-2 is used for limiting the pressing the sealing ring 1-2 to move when the clamping jaw 1-2 is pressed out of the clamping jaw 1-2 from the outer edge of the sealing ring 1.

The piston assembling device provided by the embodiment is adopted. After the piston and the sealing ring are assembled, the mechanism action sequence is as follows, preferably, an optical detection mechanism such as a camera and the like can be used for checking whether the sealing ring is at the correct position or not, after the position is judged to be correct, the press-fitting assembly moves downwards to be contacted with the end face of the piston to be assembled in the guide sleeve, the shell installation assembly moves towards the direction of the piston to be assembled until half of the sealing ring fixed on the piston to be assembled enters the annular hole of the hand piece shell, wherein the upper half section of the hand piece shell is provided with an opening position without full ring sealing, at the moment, the shell installation assembly is stopped, the press-fitting assembly presses downwards until the sealing ring completely enters the sealing hole of the hand piece shell, the sealing ring clamping jaw always clamps the sealing ring in the above process, so as to ensure that the sealing ring cannot be enlarged, then the unlocking cylinder action of the unlocking assembly drives the pressing rod to open the sealing ring clamping jaw, and the press-fitting assembly continues to press-fit the piston downwards until the piston completely enters the hand piece shell, and clamps the clamp spring in the shell to prevent the upper part of the piston from being ejected to the initial position, and finally the assembly is completed.

According to the piston assembling device, the existing piston and sealing ring assembling design is improved, the sealing ring clamping jaw is arranged on one side of the guide sleeve, the sealing ring to be assembled is directly pressed on the outer peripheral surface of the piston to be assembled through the structure of the clamping jaw, the sealing ring is protected through the sealing ring clamping jaw in the whole piston assembling process, the sealing ring is always in a compressed shrinkage state in the process, the sealing ring is not easy to scratch in the assembling process, an unlocking component matched with the sealing ring clamping jaw is arranged, the sealing ring and the sealing ring clamping jaw synchronously extend into the shell in the piston assembling process, until the sealing ring reaches a preset position, the pressing control end of the sealing ring clamping jaw is pressed through the unlocking cylinder driving pressing rod, the limiting of the sealing ring is loosened by the clamping end, the sealing ring is installed in place, the sealing ring is effectively protected, the possibility that the sealing ring is damaged in the piston assembling process is greatly reduced, and the technical problem that the sealing function of a product is poor or lost due to the fact that the sealing ring is easy to damage in the existing sealing piston tensioner product machining process is solved.

The technical scheme provided by the embodiment further optimizes the structural design of the sealing clamping jaw in the embodiment, the sealing ring clamping jaw 1-2 further comprises a clamping jaw base 1-5 and a torsion spring 1-7 connected with the base, the torsion spring 1-7 is arranged between the pressing control end 1-6 and the clamping end 1-8, and the clamping end 1-8 is provided with an arc-shaped groove for limiting a sealing ring to be installed on one side of the end part of the clamping end 1-8 adjacent to the guide sleeve 1-1.

In the design, the sealing clamping jaw realizes elastic clamping action through the structure of the torsion spring, and realizes pressing unlocking through the mutual cooperation of the pressing control end at one end and the pressing rod of the unlocking component; in addition, optimize the end structure of centre gripping end, set up curved recess, the orientation of its recess is towards uide bushing or wait to adorn the piston, realizes good fixed to the sealing ring through the structure of this recess, and one side grooved design also can avoid appearing the difficult condition of disengaging of adhesion between sealing ring and the clamping jaw.

The technical scheme that this embodiment provided has mainly optimized sealed piston and has loaded the structural design of subassembly, further increases the displacement mechanism in the horizontal direction on the basis of above-mentioned embodiment, makes the piston of placing wherein and the assembly position of the opponent's casing of the other end realize the alignment more easily, sealed piston loads subassembly 1 still including being used for adjusting the horizontal slide rail mechanism 1-4 of waiting to adorn piston horizontal position, horizontal slide rail machine includes two track blocks of slip butt joint, and clamping jaw base 1-5 and uide bushing 1-1 of sealing ring clamping jaw 1-2 are all connected with one of them track block through mounting bracket 1-9, have effectively promoted the effect of alignment installation through this structure.

The technical scheme provided by the embodiment is mainly that the press-fitting structure is further optimized, wherein the press-fitting assembly 2 comprises a press-head structure 2-3 used for pressing a piston to be fitted into a hand piece shell fixed by a shell mounting assembly 3, the press-head structure 2-3 is matched with the piston to be fitted in a guide sleeve 1-1, and the press-fitting assembly 2 further comprises an electric cylinder structure 2-1 used for driving a vertical feeding press-fitting action of the press-head mechanism.

The displacement accuracy of pressure equipment control is guaranteed in the pressure equipment process driven by the electric cylinder, pressure is transmitted through the pressure head outputting the pressure action and the pressure equipment action, the accuracy of the pressure equipment piston stress is guaranteed through the surface fit of the end structure and the piston end surface, the straightness of assembly is guaranteed, and the damage to the piston or the sealing ring is avoided.

In the technical scheme provided by the embodiment, the pressure head structure 2-3 is connected with the unlocking cylinder 4-1 through a synchronous frame, and the two are driven by the electric cylinder structure to synchronously and vertically feed. According to the technical scheme, the linkage of the pressure head structure and the unlocking assembly is optimized, the consistency of the vertical displacement of the unlocking assembly and the sealing ring clamping jaw is guaranteed, and the synchronous up-down motion of the unlocking assembly and the sealing ring clamping jaw mainly ensures that the unlocking device can timely drive the unlocking motion after the sealing ring is assembled in place, so that the complete assembly process is completed.

In the technical scheme provided by the embodiment, the whole automatic control and monitoring of the device are optimized, the finished product screening process is optimized in one step, and the finished product screening process can be directly realized through pressure monitoring, wherein a pressure sensor 2-2 is arranged between the output end of the electric cylinder structure 2-1 and the synchronous frame and used for monitoring the magnitude of the press-fit resistance in the press-fit process and judging whether the press-fit process receives additional resistance.

The sensing of the device in the press mounting process is optimized through the design of the embodiment, the pressure sensor monitors the pressure in the press mounting process in real time, namely the resistance to the piston to be mounted on the hand piece shell, the stress data of the normal press mounting process are set, when the pressure is detected to exceed the pressure data, the extra resistance to the sealing ring caused by the hand piece shell can be judged, the problem that the sealing ring is possibly damaged by displacement in the press mounting process can be correspondingly judged, the press mounting finished product with the risk of damage to the sealing ring is easily distinguished through pressure detection, and the automation degree of the device is further improved.

In the technical scheme provided by the embodiment, the shell mounting assembly 3 comprises an opponent fixture 3-2 for placing an opponent shell at a preset position angle and an opponent clamping mechanism 3-1 for clamping the opponent shell in a matched manner with the opponent fixture 3-2, wherein the opponent fixture 3-2 is connected with a lifting cylinder 3-3 for driving the opponent fixture to vertically feed and is used for being matched with press-fitting of the press-fitting assembly 2. According to the design, the structure of the shell installation assembly is optimized, the assembly of the hand piece shell is matched with the corresponding clamping mechanism through the structure, the shell installation assembly is fixed to the hand piece shell accurately and firmly, and the complete execution of the press-fitting procedure is easier to realize control.

In the technical scheme provided by the embodiment, the piston loading assembly further comprises a detection camera 1-3 for photographing and detecting whether the sealing ring to be mounted is located at a preset position on the piston to be mounted. The embodiment optimizes the initial control of the press mounting process, and judges whether the sealing ring is at the correct position on the piston or not through the detection of the camera, so that the sealing ring is ensured to be accurate in place in the subsequent process.

According to the technical scheme provided by the embodiment, the structure of the guide sleeve is optimized, and the chamfer flaring structure is arranged at the opening position of the upper end of the guide sleeve 1-1 so as to facilitate the entering of the piston to be assembled. The guide sleeve structure is optimized, the opening of one end of the guide sleeve for placing the piston is enlarged, and the piston is easier to be placed in the guide sleeve.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (9)

1. A piston assembling device for assembling a sealed piston tensioner, which is characterized by comprising a sealed piston loading assembly (1) for supporting and placing a piston to be assembled and a sealing ring, and an unlocking assembly (4) for matching the sealed piston loading assembly, wherein the unlocking assembly (4) is used for fixing the position of the sealing ring after the piston and the sealing ring are assembled, the piston assembling device also comprises a shell mounting assembly (3) for arranging a hand piece shell and a press-mounting assembly (2) for pressing the sealing ring of the piston (6) to be assembled into the hand piece shell, the sealed piston loading assembly (1) comprises a guide sleeve (1-1) sleeved on the outer edge of the piston (6) to be assembled, and a sealing ring clamping jaw (1-2) arranged on one side of the guide sleeve (1-1), the sealing ring clamping jaw (1-2) comprises a pressing control end (1-6) and a clamping end (1-8), the clamping end (1-8) is elastically clamped with the front end of the outer edge of the piston (6) assembled in the guide sleeve (1-1), the front end of the piston (6) is elastically matched with the front end of the outer edge of the piston (5) to be assembled into the guide sleeve, the piston (4) is connected with the cylinder (4) in a pressing rod driving position (4) in a pressing rod driving mode, the unlocking assembly (4-4) is unlocked, the compression bar (4-2) is matched with the pressing control end (1-6) of the sealing ring clamping jaw (1-2) and is used for pressing the sealing ring clamping jaw (1-2) when the unlocking cylinder (4-1) outputs motion, and the clamping end (1-8) of the sealing ring clamping jaw (1-2) is loosened from the outer edge of the piston to release the position limitation of the sealing ring.

2. The piston assembling device according to claim 1, wherein the sealing ring clamping jaw (1-2) further comprises a clamping jaw base (1-5) and a torsion spring (1-7) connected with the clamping jaw base (1-5), the torsion spring (1-7) is arranged between the pressing control end (1-6) and the clamping end (1-8), and the clamping end (1-8) is provided with an arc-shaped groove for limiting the sealing ring (5) to be assembled at one side of the end part of the clamping end (1-8) adjacent to the guide sleeve (1-1).

3. The piston assembling device according to claim 2, wherein the sealing piston loading assembly (1) further comprises a horizontal slide rail mechanism (1-4) for adjusting the horizontal position of the piston to be assembled, the horizontal slide rail mechanism comprises two rail blocks which are in sliding butt joint, and the clamping jaw base (1-5) of the sealing ring clamping jaw (1-2) and the guide sleeve (1-1) are connected with one of the rail blocks through a mounting frame (1-9).

4. The piston assembling device according to claim 1, wherein the press-fitting assembly (2) comprises a press-head structure (2-3) for pressing a piston to be assembled into a hand piece housing fixed by the housing mounting assembly (3), the press-head structure (2-3) is matched with the piston to be assembled in the guide sleeve (1-1), and the press-fitting assembly (2) further comprises an electric cylinder structure (2-1) for driving a vertical feeding press-fitting action of the press-head structure (2-3).

5. The piston assembling device according to claim 4, wherein the ram structure (2-3) is connected with the unlocking cylinder (4-1) through a synchronous frame, and the ram structure and the unlocking cylinder are driven by the electric cylinder structure (2-1) to synchronously and vertically feed.

6. The piston assembling device according to claim 5, wherein a pressure sensor (2-2) is arranged between the output end of the electric cylinder structure (2-1) and the synchronous frame, and is used for monitoring the press-fitting resistance in the press-fitting process and judging whether the press-fitting process is subjected to additional resistance.

7. The piston assembling device according to any one of claims 1-6, wherein the housing mounting assembly (3) comprises a opponent fixture (3-2) for placing an opponent housing at a preset position angle, and an opponent clamping mechanism (3-1) for clamping the opponent housing in cooperation with the opponent fixture (3-2), and the opponent fixture (3-2) is connected with a lifting cylinder (3-3) for driving vertical feeding of the opponent fixture (3-2) for cooperation with press-fitting of the press-fitting assembly (2).

8. The piston assembling device according to claim 7, wherein the piston loading assembly further comprises a detection camera (1-3) for photographing to detect whether the sealing ring (5) to be assembled is located at a preset position on the piston to be assembled.

9. The piston assembling device according to claim 7, wherein a chamfer flaring structure is arranged at the upper end opening position of the guide sleeve (1-1) so as to facilitate the entering of the piston to be assembled.