Floating piston assembling device and air cylinder assembling system

Abstract

The utility model belongs to the technical field of air cylinder assembly, and discloses a floating piston assembly device and an air cylinder assembly system which are used for installing a floating piston in a cylinder body, an inner hole is formed in the cylinder body, the floating piston comprises a body and a sealing ring, the sealing ring is arranged on the body in a sleeved mode, and the floating piston assembly device comprises an installation base and an ejection assembly. The mounting base can be in sliding fit with the inner hole, a mounting groove is formed in the mounting base, the sealing ring can be clamped in the mounting groove, a detection piece is arranged on the mounting base and used for detecting the direction of the floating piston, the ejection assembly comprises an ejection rod and an abutting piece, the abutting piece is arranged in the mounting groove in a sliding mode, and the abutting piece is used for abutting against the body. And the abutting piece penetrates through the bottom of the mounting groove and is connected with the ejector rod. The sealing ring is isolated from the cylinder body by the mounting seat, so that the sealing ring is prevented from being cut by the groove, and the sealing performance of the cylinder is ensured; the direction of the floating piston is detected through the detection piece, so that installation direction errors are avoided, and assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cylinder assembly technical field especially relates to a floating piston assembly device and cylinder assembly system. BACKGROUND

[0002] Medium, heavy commercial vehicles widely adopt pneumatic shifters to shift gears, and the pneumatic shifters contain multiple cylinders. In order to correspond to multiple gears, the cylinders are usually equipped with floating pistons to meet the multi-position requirement. Therefore, the installation of the floating pistons is a common process in the production of the pneumatic shifters. Currently, workers usually take the floating pistons by hand and install them into the inner holes of the cylinder bodies. On the one hand, due to the small difference in structural features between the front end face and the rear end face of the floating piston, the sealing ring is easily installed reversely during manual installation, which requires rework and leads to low assembly efficiency. On the other hand, a groove is processed on the sidewall of the inner hole of the cylinder body for installing components such as elastic retaining rings. When the floating piston passes through the groove along the axial direction of the inner hole, the sealing ring on the floating piston is easily cut by the annular groove, which affects the sealing performance of the cylinder.

[0003] Therefore, it is urgent to provide a floating piston assembly device and a cylinder assembly system to solve the above problems. SUMMARY

[0004] The utility model aims at providing a floating piston assembly device and a cylinder assembly system, which can identify the direction of the floating piston, avoid incorrect installation direction, and improve assembly efficiency. In addition, the sealing ring of the floating piston can be prevented from being cut by the groove in the cylinder, and the sealing performance of the cylinder can be ensured.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A floating piston assembly device is used to install a floating piston into a cylinder body. The cylinder body is provided with an inner hole. The floating piston includes a body and a sealing ring. The sealing ring is sleeved on the body. The floating piston assembly device includes a mounting seat and an ejection assembly. The mounting seat can be slidably matched with the inner hole. The mounting seat is provided with a mounting groove. The sealing ring can be clamped in the mounting groove. The mounting seat is provided with a detection piece. The detection piece is used to detect the direction of the floating piston. The ejection assembly includes an ejection rod and an abutting piece. The abutting piece is slidably arranged in the mounting groove. The abutting piece is used to abut against the body to eject the floating piston out of the mounting groove. The abutting piece passes through the bottom of the mounting groove and is connected with the ejection rod.

[0007] Further, the abutting piece includes at least three ejection pins which are uniformly and spacedly arranged along the circumference of the mounting groove.

[0008] Further, the ejection assembly further comprises an outer cylinder, the ejection rod is slidably arranged in the outer cylinder, the outer cylinder is fixedly connected with the mounting base, and the outer cylinder is provided with a limiting structure for abutting against the ejection rod to limit the maximum distance of the ejection rod moving in the direction of approaching or moving away from the mounting base.

[0009] Further, the outer cylinder is provided with a first cavity and a second cavity in communication, the mounting base cover is arranged at one end of the first cavity away from the second cavity, and the first cavity and the second cavity have a stepped surface therebetween; the ejection rod comprises a first rod and a second rod connected with each other, the first rod can abut against the stepped surface, and the second rod is slidably arranged in the second cavity.

[0010] Further, the ejection assembly further comprises an ejection cylinder, the ejection cylinder is provided with a first limiting groove, the first limiting groove is slidably arranged at one end of the outer cylinder away from the mounting base, the bottom of the first limiting groove can abut against the outer cylinder, and one end of the second rod away from the first rod is connected with the ejection cylinder.

[0011] Further, the ejection assembly further comprises a baffle, the baffle is arranged at one end of the second cavity away from the first cavity, the baffle is provided with a first mounting hole, one end of the second rod away from the first rod is provided with a connecting portion, the second rod can abut against the baffle, and the connecting portion is connected with the ejection cylinder through the first mounting hole.

[0012] Further, the ejection assembly further comprises an elastic member arranged between the ejection rod and the mounting base.

[0013] Further, the mounting groove is further provided with a first limiting block protruding from the surface of the mounting base for abutting against the cylinder body.

[0014] Further, the detection member comprises a proximity switch.

[0015] A cylinder assembly system comprises a display screen and the floating piston assembly device as described above, the detection member is signal connected with the display screen, and the display screen is used for displaying assembly instructions.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model provides a kind of floating piston assembly device and cylinder assembly system, for floating piston is installed to cylinder body, cylinder body is equipped with bore, floating piston includes body and sealing ring, sealing ring is sleeved on body, wherein, floating piston assembly device includes mounting seat and ejector assembly, mounting seat can be slidably cooperated with bore, mounting seat is equipped with installation groove, sealing ring can be connected in installation groove, and mounting seat is equipped with detection piece, detection piece is used to detect the direction of floating piston, ejector assembly includes ejector rod and abutting piece, abutting piece is slidably arranged in installation groove, abutting piece is used to abut body, to eject floating piston from installation groove, and abutting piece passes through the bottom of installation groove and is connected with ejector rod.Because mounting seat can be slidably cooperated with bore, mounting seat can enter cylinder body along the axial direction of bore, sealing ring is connected in installation groove, so that sealing ring is isolated from cylinder body, when mounting seat crosses groove and reaches the specified installation position of cylinder body, push ejector rod and make abutting piece abut body, so that floating piston is ejected from installation groove, floating piston is installed to the specified position of cylinder body, avoid sealing ring being cut by groove, guarantee the sealing performance of cylinder;The direction of floating piston is detected by detection piece, to avoid installation direction error, reduce rework rate, to improve assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the schematic diagram that floating piston assembly device of the utility model sends floating piston into cylinder body;

[0019] Figure 2 It is the schematic diagram that floating piston assembly device of the utility model ejects floating piston in cylinder body;

[0020] Figure 3 It is the structure schematic diagram of floating piston assembly device of the utility model;

[0021] Figure 4 It is the exploded view of floating piston assembly device of the utility model;

[0022] Figure 5 It is the sectional view of floating piston assembly device of the utility model.

[0023] In the drawing:

[0024] 100, floating piston;110, body;120, sealing ring;200, cylinder body;210, bore;220, groove;

[0025] 1, mounting seat; 11, mounting groove; 12, sliding hole; 2, ejection assembly; 21, ejection rod; 211, first rod; 212, second rod; 213, connecting part; 22, ejection pin; 23, outer cylinder; 231, first cavity; 232, second cavity; 233, stepped surface; 24, ejection cylinder; 241, first limiting groove; 25, baffle; 26, elastic piece; 27, gas passage; 28, air vent;

[0026] 3, proximity switch;

[0027] 4, first limiting block. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0029] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0032] As Figures 1-5 shown, the embodiment provides a floating piston assembly device for installing a floating piston 100 into a cylinder body 200, the cylinder body 200 is provided with an inner hole 210, the floating piston 100 comprises a body 110 and a sealing ring 120, the sealing ring 120 is sleeved on the body 110, wherein the floating piston assembly device comprises a mounting seat 1 and an ejection assembly 2, the mounting seat 1 can be slidably matched with the inner hole 210, the mounting seat 1 is provided with a mounting groove 11, the sealing ring 120 can be clamped in the mounting groove 11, and the mounting seat 1 is provided with a detection piece, the detection piece is used for detecting the direction of the floating piston 100, the ejection assembly 2 comprises an ejection rod 21 and an abutting piece, the abutting piece is slidably arranged in the mounting groove 11, and the abutting piece is used for abutting against the body 110 to eject the floating piston 100 out of the mounting groove 11, and the abutting piece passes through the bottom of the mounting groove 11 and is connected with the ejection rod 21.

[0033] As Figures 1-2 shown, since the mounting seat 1 can be slidably matched with the inner hole 210, the mounting seat 1 can enter the cylinder body 200 along the axial direction of the inner hole 210, the sealing ring 120 is clamped in the mounting groove 11, so that the sealing ring 120 is isolated from the cylinder body 200, when the mounting seat 1 passes through the groove 220 and reaches the specified installation position of the cylinder body 200, the ejection rod 21 is pushed to make the abutting piece abut against the body 110, so that the floating piston 100 is ejected out of the mounting groove 11, the floating piston 100 is installed at the specified position of the cylinder body 200, the sealing ring 120 is prevented from being cut by the groove 220, and the sealing performance of the cylinder is ensured; the direction of the floating piston 100 is detected by the detection piece, so as to avoid incorrect installation direction and reduce the rework rate, thereby improving the assembly efficiency.

[0034] Optionally, the abutting piece comprises at least three ejection pins 22 which are uniformly and spacedly arranged along the circumference of the mounting groove 11, the at least three uniformly and spacedly arranged ejection pins 22 abut against the end face of the body 110 close to the bottom of the mounting groove 11, so that the floating piston 100 is balanced in force, thereby stably ejecting the floating piston 100, avoiding the floating piston 100 from being skewed, and ensuring the assembly quality. In the embodiment, the abutting piece comprises four ejection pins 22. In other embodiments, the number of the ejection pins 22 can also be three, five or eight, etc., which is not limited herein.

[0035] In another optional embodiment, the abutting piece can also be an ejection ring which is adapted to the shape of the end face of the body 110 close to the bottom of the mounting groove 11, so as to increase the abutting area of the abutting piece and the body 110, and further improve the balance of the force of the floating piston 100, which is beneficial to improve the assembly quality and the assembly efficiency.

[0036] The bottom of the mounting groove 11 is provided with a through sliding groove, and the abutting piece is slidingly connected to the sliding groove. The sliding groove can provide a guiding effect for the sliding of the abutting piece, so that the process of the ejection assembly 2 ejecting the floating piston 100 is smoother. It is easy to understand that when the abutting piece is an ejection pin 22, the sliding groove is a sliding hole 12 corresponding to the ejection pin 22; when the abutting piece is an ejection ring, the sliding groove is a through annular groove matched with the shape of the ejection ring. The specific structure of the sliding groove can be adaptively adjusted according to the structure of the abutting piece, which is not limited here.

[0037] As shown in Figures 3-5 , in order to facilitate assembly, the ejection assembly 2 further comprises an outer cylinder 23, the ejection rod 21 slidingly penetrating the outer cylinder 23, the outer cylinder 23 being fixedly connected with the mounting seat 1. The worker can hold the outer cylinder 23 with one hand and push and pull the ejection rod 21 with the other hand. The floating piston assembly device is designed reasonably and is convenient to operate. The outer cylinder 23 is provided with a limiting structure for abutting against the ejection rod 21 to limit the maximum distance of the ejection rod 21 moving in the direction of approaching or moving away from the mounting seat 1, which can avoid the worker damaging the floating piston assembly device by excessive force, and is beneficial to improve the user's experience.

[0038] Specifically, as shown in Figure 5 , the outer cylinder 23 is provided with a first cavity 231 and a second cavity 232 in communication, the mounting seat 1 is provided on one end of the first cavity 231 away from the second cavity 232, and the first cavity 231 and the second cavity 232 have a stepped surface 233 therebetween; the ejection rod 21 comprises a first rod 211 and a second rod 212 connected together, the first rod 211 can abut against the stepped surface 233, and the second rod 212 slidingly penetrates the second cavity 232. By abutting against the first rod 211 through the stepped surface 233, the maximum distance of the ejection rod 21 moving in the direction away from the mounting seat 1 can be limited.

[0039] Further, the ejection assembly 2 further comprises an ejection cylinder 24, the ejection cylinder 24 is provided with a first limiting groove 241, the first limiting groove 241 is slidingly sleeved on one end of the outer cylinder 23 away from the mounting seat 1, and the bottom of the first limiting groove 241 can abut against the outer cylinder 23, and the second rod 212 is connected to the ejection cylinder 24 at an end away from the first rod 211. The provision of the ejection cylinder 24 can facilitate the worker to hold and operate, and by abutting the bottom of the first limiting groove 241 against the outer cylinder 23, the maximum distance of the ejection rod 21 moving in the direction approaching the mounting seat 1 can be limited.

[0040] Further, the ejection assembly 2 further comprises a baffle 25, the baffle 25 is installed at one end of the second cavity 232 away from the first cavity 231, the baffle 25 is provided with a first mounting hole, the second rod 212 is provided with a connecting portion 213 at one end away from the first rod 211, the second rod 212 can abut against the baffle 25, the connecting portion 213 is connected with the ejection barrel 24 through the first mounting hole, the baffle 25 abuts against the second rod 212, further limiting the movement of the ejection rod 21 away from the mounting base 1, and the baffle 25 can close one end of the second cavity 232 away from the first cavity 231, preventing foreign matter from entering the outer barrel 23, which is beneficial to improve the appearance and quality of the floating piston assembly device, and can prolong the service life.

[0041] In other embodiments, the limiting structure can further comprise a second limiting groove and a second limiting block, the second limiting groove extends in the direction close to or away from the mounting base 1, one of the ejection rod 21 and the inner wall of the outer barrel 23 is provided with the second limiting block, and the other is provided with the second limiting groove, the second limiting block can slide in the second limiting groove to limit the maximum distance of the ejection rod 21 moving in the direction close to or away from the mounting base 1.

[0042] Wherein, in order to facilitate the movement of the ejection rod 21, there is a gas passage 27 between the ejection rod 21 and the outer barrel 23, and the ejection barrel 24 is provided with a through air vent 28, the air vent 28 is communicated with the gas passage 27 through the mounting groove 11 and the first mounting hole in sequence, so as to facilitate the flow of gas in and out of the ejection assembly 2, keep the internal and external air pressure consistent, prevent the ejection rod 21 from moving difficultly due to good airtightness, so as to make the worker push and pull the ejection rod 21 easily and smoothly.

[0043] As Figure 4 Combined Figure 5 As shown in the figure, the ejection assembly 2 further comprises a resilient member 26, the resilient member 26 is arranged between the ejection rod 21 and the mounting base 1, when the ejection rod 21 moves towards the mounting base 1, the resilient member 26 is compressed, after the abutting member ejects the floating piston 100, the restoring force of the resilient member 26 acts on the ejection rod 21, which can reset the ejection assembly 2, without the need for the worker to manually reset the ejection assembly 2, further improving the assembly efficiency and improving the use experience. Wherein, the resilient member 26 includes but is not limited to spring or elastic rubber, etc., which is not limited here.

[0044] As Figure 3As shown, in the embodiment, the detection member includes a proximity switch 3, when the floating piston 100 is installed in the correct direction, the floating piston 100 is in the detection range of the proximity switch 3, the proximity switch 3 is closed, and a signal is sent to prompt the worker to proceed to the next installation; when the floating piston 100 is installed in the wrong direction, the floating piston 100 is located outside the detection range of the proximity switch 3, the proximity switch 3 has no signal, and the worker needs to reverse the direction of the floating piston 100 until the proximity switch 3 sends a signal.

[0045] Specifically, a second mounting hole is formed in the mounting groove 11, the second mounting hole is used for mounting the proximity switch 3, and the specific position of the second mounting hole is selected according to the shape difference between the two end faces of the floating piston 100, and the following conditions are met: when the floating piston 100 is installed in the correct direction, the floating piston 100 is in the detection range of the proximity switch 3; when the floating piston 100 is installed in the wrong direction, the floating piston 100 is located outside the detection range of the proximity switch 3.

[0046] In other embodiments, according to the surface shape difference of the floating piston 100, the detection member can also include a pressure sensor or a photoelectric sensor arranged on the side wall or the bottom of the mounting side groove, without limitation.

[0047] In addition, the first limiting block 4 is arranged in the mounting groove 11, the first limiting block 4 protrudes from the surface of the mounting seat 1, is used for abutting against the cylinder body 200, so as to determine the installation position of the floating piston 100 in the cylinder body 200, unify the initial position of the floating piston 100 in the cylinder, and improve the stability of the cylinder product.

[0048] Among them, the first limiting block 4 is threadedly connected with the mounting seat 1, the mounting seat 1 is threadedly connected with the outer cylinder 23, the baffle 25 is threadedly connected with the outer cylinder 23, and the connecting part 213 is threadedly connected with the ejection cylinder 24, which is conducive to ensuring the stability of the connection and improving the convenience of assembling and disassembling the floating piston assembly device. Alternatively, the connection modes between the first limiting block 4 and the mounting seat 1, the mounting seat 1 and the outer cylinder 23, the baffle 25 and the outer cylinder 23, and the connecting part 213 and the ejection cylinder 24 include but are not limited to clamping or inserting, without limitation.

[0049] The embodiment also provides a cylinder assembly system, which comprises a display screen and the floating piston assembly device according to any one of the above embodiments, and the detection member is connected with the display screen in signal mode, and the display screen is used for displaying assembly instructions. The worker clamps the floating piston 100 into the mounting groove 11, when the detection member detects that the mounting direction of the floating piston 100 is correct, the detection member sends a signal to the display screen, and the display screen displays assembly instructions after receiving the signal, so as to prompt the worker to send the floating piston assembly device into the inner hole 210 to perform assembly operation; when the mounting direction of the floating piston 100 is incorrect, the detection member has no signal, and the display screen has no instruction, so the worker needs to adjust the mounting direction of the floating piston 100 until the display screen displays assembly instructions. By applying the floating piston assembly device, the direction of the floating piston 100 can be recognized, the mounting direction is prevented from being incorrect, and the assembly efficiency is improved; and the sealing ring 120 of the floating piston 100 can be prevented from being cut by the groove 220 in the cylinder, and the sealing performance of the cylinder is ensured.

[0050] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A floating piston assembly device for installing a floating piston (100) into a cylinder (200), the cylinder (200) having an inner hole (210), the floating piston (100) comprising a body (110) and a sealing ring (120), the sealing ring (120) being sleeved on the body (110), characterized in that, The floating piston assembly device comprises a mounting base (1) and an ejection assembly (2), the mounting base (1) is capable of being in sliding fit with the inner hole (210), the mounting base (1) is provided with a mounting groove (11), and the sealing ring (120) can be clamped in the mounting groove (11); and the mounting base (1) is provided with a detection piece for detecting the direction of the floating piston (100); the ejection assembly (2) comprises an ejection rod (21) and an abutting piece, the abutting piece is slidingly arranged in the mounting groove (11), and the abutting piece is used for abutting against the body (110) to eject the floating piston (100) out of the mounting groove (11), and the abutting piece is connected with the ejection rod (21) through the bottom of the mounting groove (11).

2. The floating piston assembly of claim 1, wherein, The abutting piece comprises at least three ejection pins (22) which are uniformly and circumferentially spaced apart.

3. The floating piston assembly of claim 1, wherein, The ejection assembly (2) further comprises an outer cylinder (23), the ejection rod (21) is slidingly arranged in the outer cylinder (23), the outer cylinder (23) is fixedly connected with the mounting base (1), and the outer cylinder (23) is provided with a limiting structure for abutting against the ejection rod (21) to limit the maximum distance of the ejection rod (21) moving in the direction of approaching or moving away from the mounting base (1).

4. The floating piston assembly of claim 3, wherein, The outer cylinder (23) is provided with a first cavity (231) and a second cavity (232) in communication, the mounting base (1) is arranged at one end of the first cavity (231) away from the second cavity (232), and the first cavity (231) and the second cavity (232) have a stepped surface (233) therebetween; the ejection rod (21) comprises a first rod (211) and a second rod (212) connected with each other, the first rod (211) can abut against the stepped surface (233), and the second rod (212) is slidingly arranged in the second cavity (232).

5. The floating piston assembly of claim 4, wherein, The ejection assembly (2) further comprises an ejection cylinder (24), the ejection cylinder (24) is provided with a first limiting groove (241), the first limiting groove (241) is slidingly arranged at one end of the outer cylinder (23) away from the mounting base (1), the bottom of the first limiting groove (241) can abut against the outer cylinder (23), and one end of the second rod (212) away from the first rod (211) is connected with the ejection cylinder (24).

6. The floating piston assembly of claim 5, wherein, The ejection assembly (2) further comprises a baffle (25), the baffle (25) is arranged at one end of the second cavity (232) away from the first cavity (231), the baffle (25) is provided with a first mounting hole, one end of the second rod (212) away from the first rod (211) is provided with a connecting portion (213), the second rod (212) can abut against the baffle (25), and the connecting portion (213) is connected with the ejection cylinder (24) through the first mounting hole.

7. A floating piston assembly according to any one of claims 1 to 6, wherein, The ejection assembly (2) further comprises an elastic piece (26), and the elastic piece (26) is arranged between the ejection rod (21) and the mounting base (1).

8. A floating piston assembly according to any one of claims 1 to 6, wherein, A first limiting block (4) is further arranged in the mounting groove (11) and protrudes from the surface of the mounting base (1) to abut against the cylinder body (200).

9. The floating piston assembly of any of claims 1-6, wherein, The detection member comprises a proximity switch (3).

10. A cylinder assembly system characterized by, The display screen is signal connected with the detection member, and is used for displaying the assembly instruction.

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