An automatic air-assisted assembly piston device

Abstract

The application discloses an automatic air-assisted piston assembly device, which comprises a body, a self-resetting button one, a self-resetting button two, a self-resetting button three and a high-pressure air inlet on the body, an elastic ring assembled at the front end of the body, a toothed steel belt arranged around the elastic ring, a piston push rod arranged in the body, a rubber hammer fixed at the front end of the piston push rod, a gear and a driving gear rotating pneumatic rotor arranged in the body, the toothed steel belt being engaged with the gear, an air channel one, an air channel two, an air channel three, an air channel four and an air channel five arranged in the body, the high-pressure air inlet being communicated with the piston push rod and the pneumatic rotor through the air channels, and each self-resetting button being used for controlling the on-off of the corresponding air channel. Through the above components, the device integrates a piston ring tightening and a piston pushing mechanism, realizes the assembly operation by relying on the pneumatic, is simple in process, uniform in tightening, flexible in top pushing without impact, reduces the damage of parts and improves the assembly consistency.

Description

Technical Field

[0001] This invention relates to the field of engine manufacturing technology, and in particular to an automatic air-assisted piston assembly device. Background Technology

[0002] During engine assembly and maintenance, it is necessary to assemble a piston with piston rings into the cylinder. Current assembly operations mostly use separate tools, relying on manual operation of iron clamps to tighten the piston rings, and then using a hand-held rubber hammer to tap the piston into the cylinder.

[0003] The existing method requires switching between two sets of tools, making the assembly process cumbersome and inefficient. Manually tightening the clamps makes it difficult to ensure uniform clamping force, easily leading to excessive local pressure that can damage the piston rings. It also easily causes clamp misalignment, resulting in uneven piston ring shrinkage. Furthermore, manual hammering generates impact loads, which can easily cause piston ring breakage and scratches on the cylinder wall. Assembly quality is highly dependent on the operator's experience, resulting in poor assembly consistency. Therefore, there is an urgent need for a device that integrates piston ring tightening and piston pushing functions to simplify the assembly process, achieve uniform piston ring tightening, complete piston assembly without impact, reduce the risk of component damage, and improve assembly consistency. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an automatic air-assisted piston assembly device. This device solves the problems of cumbersome piston assembly process, uneven clamping force which easily damages piston rings, impact from manual hammering which easily scratches parts, and assembly consistency relying on manual experience.

[0005] The present invention also provides an automatic pneumatic-assisted assembly piston device, comprising a body, wherein the body is provided with a self-reset button 1, a self-reset button 2, a self-reset button 3 and a high-pressure air inlet; an elastic ring is assembled at the front end of the body, and a toothed steel strip is arranged around the elastic ring; a piston-type push rod is provided inside the body, and a rubber hammer is fixed at the front end of the piston-type push rod; a pneumatic rotor with gears and drive gears is also provided inside the body, and the toothed steel strip meshes with the gears; air passages 1, 2, 3, 4 and 5 are arranged inside the body, and the high-pressure air inlet is connected to the piston-type push rod and the pneumatic rotor through each air passage, and the respective reset button controls the opening and closing of the corresponding air passage.

[0006] According to the automatic pneumatic assembly piston device of the present invention, one end of the toothed steel belt is connected to the elastic ring, and the other end passes through one side of the body to the other side. The toothed steel belt part located inside the body meshes with the gear. The toothed steel belt rotates with the gear to realize the expansion and contraction, thereby controlling the contraction and opening of the elastic ring.

[0007] According to the automatic pneumatic-assisted assembly piston device of the present invention, the output end of the pneumatic rotor is connected to the gear transmission, and the pneumatic rotor can rotate forward and reverse, respectively driving the toothed steel belt to tighten and release.

[0008] According to the automatic pneumatic-assisted piston assembly device of the present invention, the self-reset button controls the three-way air passage. High-pressure gas is input into the pneumatic rotor through the three-way air passage, driving the pneumatic rotor to rotate forward, which drives the gear to tighten the toothed steel belt, causing the elastic ring to contract and tighten the piston ring.

[0009] According to the automatic pneumatic assembly piston device of the present invention, the self-reset button controls the air passage to be opened, and high-pressure gas enters the rodless chamber of the piston push rod through the air passage, pushing the piston push rod forward and the rubber hammer axially pushes the piston to complete the assembly.

[0010] According to the automatic pneumatic assembly piston device of the present invention, the self-reset button two simultaneously controls the connection between air passage two and air passage four; high-pressure gas is introduced into the rod chamber of the piston-type push rod through air passage two to drive the piston-type push rod to retract; high-pressure gas is input into the pneumatic rotor through air passage four to drive the pneumatic rotor to reverse and release the toothed steel belt.

[0011] According to the automatic pneumatic assembly piston device of the present invention, the fifth air passage is an exhaust passage. During the operation of the piston push rod and the pneumatic rotor, the internal exhaust gas is discharged to the outside through the fifth air passage.

[0012] According to the automatic pneumatic assembly piston device of the present invention, the rubber hammer is coaxially arranged at the center of the elastic ring, and the rubber hammer reciprocates axially with the piston-type push rod.

[0013] According to the automatic air-assisted assembly piston device of the present invention, the main body is a pistol-type handheld shell structure, the high-pressure air inlet is arranged at the bottom end of the main body handle, and self-reset button one, self-reset button two, and self-reset button three are arranged vertically in sequence on the outer side wall of the main body handle.

[0014] According to the automatic pneumatic piston assembly device of the present invention, the elastic ring is an open annular component, the elastic ring is fixedly installed at the front end of the body, and the inner ring space of the elastic ring is used to place the piston with piston ring to be assembled.

[0015] Beneficial effects: This technical solution presents an automatic pneumatic-assisted piston assembly device. This device integrates the piston ring tightening mechanism and the piston pushing mechanism into a pistol-style handheld body. Using a high-pressure air source, self-reset buttons one, two, and three are used to tighten the piston ring, push the piston, and reset the mechanism, simplifying the assembly process. A pneumatic rotor drives an elastic ring via gears and a toothed steel belt to evenly tighten the piston ring, avoiding localized compression damage. A piston-type push rod drives a rubber hammer to flexibly push the piston, eliminating impact and reducing scratches and damage to parts, thus improving assembly consistency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a front view structural diagram of the automatic pneumatic-assisted assembly piston device of the present invention; Figure 2 This is a right-side cross-sectional view of the automatic pneumatic-assisted assembly piston device of the present invention. Figure 3 This is a front cross-sectional view of the automatic pneumatic-assisted assembly piston device of the present invention. Figure 4 This is a left-side structural view of the automatic pneumatic-assisted assembly piston device of the present invention.

[0017] Legend: 1. Main body; 2. Self-reset button one; 3. Self-reset button two; 4. Self-reset button three; 5. High-pressure air inlet; 6. Elastic ring; 7. Toothed steel belt; 8. Rubber hammer; 9. Piston push rod; 10. Air passage one; 11. Air passage two; 12. Air passage three; 13. Gear; 14. Pneumatic rotor; 15. Air passage four; 16. Air passage five. Detailed Implementation

[0018] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0019] Reference Figure 1-4 An embodiment of the present invention provides an automatic pneumatic-assisted assembly piston device, comprising: Considering the problems of scattered assembly tools in existing technology, requiring frequent tool switching and cumbersome operation, an integrated pistol body structure is designed. This includes a body 1, which is a pistol-style handheld shell structure. A high-pressure air inlet 5 is located at the bottom of the handle of the body 1. Self-reset buttons 1-2, 2-3, and 3-4 are vertically arranged on the outer wall of the handle of the body 1. The high-pressure air inlet 5 is provided on the body 1. An elastic ring 6 is mounted at the front end of the body 1. The body 1 internally integrates a toothed steel band 7, a rubber hammer 8, a piston-type push rod 9, gears 13, a pneumatic rotor 14, and various air passages. The high-pressure air inlet 5 connects to an external high-pressure air source. The operator holds the handle of the main body 1 and outputs operation commands through different buttons on the outside of the handle. The piston ring tightening and piston pushing components are integrated into the handheld gun body, eliminating the need to change multiple sets of tools. The grip and operation are convenient, simplifying the assembly process.

[0020] Considering the need for the piston rings to achieve radial clamping and loosening, and the need for reliable transmission and meshing of the steel belt, a connection structure is designed in which a toothed steel belt passes through the body and meshes with the gear. One end of the toothed steel belt 7 is connected to the elastic ring 6, and the other end passes through one side of the body 1 to the other side. The toothed steel belt 7 located inside the body 1 meshes with the gear 13. The toothed steel belt 7 rotates with the gear 13 to achieve expansion and contraction, thereby controlling the contraction and opening of the elastic ring 6. When gear 13 rotates, it drives the meshing toothed steel belt 7 to pull or release the elastic ring 6, realizing the radial contraction and opening of the elastic ring 6; the steel belt drive meshing is reliable, the transmission gap is small, and it can stably control the opening and closing of the elastic ring 6, realizing the clamping and releasing of the piston ring.

[0021] Considering that the elastic ring needs to complete two sets of actions, tightening and resetting, a pneumatic rotor that can rotate in both directions is set up in conjunction with a gear transmission. The output end of the pneumatic rotor 14 is connected to the gear 13, and the pneumatic rotor 14 can rotate in both directions to drive the toothed steel belt 7 to tighten and release, respectively. The pneumatic rotor 14 is driven by high-pressure gas. When it rotates forward, it drives the gear 13 to wind up the toothed steel belt 7. When it rotates in reverse, it releases the toothed steel belt 7. It achieves bidirectional drive by pneumatics, without the need for manual adjustment. It has a fast response and can reliably complete the piston ring clamping and mechanism reset.

[0022] Considering the need for automatic piston ring tightening during the early stages of assembly, a self-reset button 34 is set up to work with air passage 312 to control the forward rotation circuit of the pneumatic rotor. The self-reset button 34 controls the air passage 312 to open, and high-pressure gas is input into the pneumatic rotor 14 through the air passage 312, driving the pneumatic rotor 14 to rotate forward, which drives the gear 13 to tighten the toothed steel belt 7, causing the elastic ring 6 to contract and tighten the piston ring. Press the self-reset button 34, the air passage 312 is connected, the high-pressure air drives the pneumatic rotor 14 to rotate forward, pull the toothed steel belt 7 to shrink the elastic ring 6, and gather the piston ring around the piston; the pneumatic automatic tightening of the piston ring, the clamping force is uniform, and avoids the local squeezing damage to the piston ring caused by manual clamping.

[0023] Considering that the piston needs to be pushed into the cylinder smoothly after the piston rings are tightened, a self-reset button 2 and an air passage 10 are set to drive the piston push rod to extend. The self-reset button 2 controls the air passage 10 to be open, and high-pressure gas enters the rodless chamber of the piston push rod 9 through the air passage 10, pushing the piston push rod 9 to extend forward. The rubber hammer 8 pushes the piston axially to complete the assembly. Press the self-reset button 2, the air passage 10 is opened, high-pressure gas enters the rodless chamber and pushes the piston-type push rod 9 to extend, the rubber hammer 8 pushes the piston forward and is loaded into the cylinder; the pneumatic output thrust is smooth, replacing manual hammering, eliminating impact load, and reducing the risk of piston and cylinder collision and scratch.

[0024] Considering that the push rod needs to retract and the ring needs to be released and reset simultaneously after assembly, a self-reset button 23 is set to synchronously control the two air paths; the self-reset button 23 simultaneously controls the connection between air passage 211 and air passage 415; high-pressure gas is introduced into the rod chamber of the piston-type push rod 9 through air passage 211 to drive the piston-type push rod 9 to retract; high-pressure gas is input into the pneumatic rotor 14 through air passage 415 to drive the pneumatic rotor 14 to reverse and release the toothed steel belt 7. Pressing the self-reset button 23 activates both air passages simultaneously. One passage drives the push rod to retract, while the other drives the pneumatic rotor to reverse and release the steel belt. A single button press completes the synchronous reset of both mechanisms, shortening the assembly cycle interval and improving batch assembly efficiency.

[0025] Considering that the accumulation of exhaust gas in the pneumatic cavity may cause the mechanism to jam, air passage 5 16 is specially set as an independent exhaust channel; air passage 5 16 is an exhaust channel, and during the operation of piston push rod 9 and pneumatic rotor 14, the internal exhaust gas is discharged to the outside through air passage 5 16. When the push rod and pneumatic rotor are working and changing air, the waste gas in the cavity is directly discharged to the outside of the device through air passage 516; this eliminates back pressure in the cavity, avoids jamming of pneumatic components, and ensures that the actions of each mechanism are sensitive and reliable.

[0026] Considering that eccentric pushing may easily cause piston misalignment and cylinder jamming when pushing the piston, the rubber hammer 8 is coaxially arranged at the center of the elastic ring 6; the rubber hammer 8 is coaxially arranged at the center of the elastic ring 6, and the rubber hammer 8 moves axially back and forth with the piston-type push rod 9. After the piston is placed inside the elastic ring 6, the rubber hammer 8 is always aligned with the center of the piston and applies thrust along the axial direction; this ensures the centering of the push and prevents the piston from tilting, thus avoiding the piston from skewing and scratching the inner wall of the cylinder.

[0027] Considering the placement and positioning requirements of the piston, the elastic ring 6 is designed as an open ring and installed at the front end of the body 1; the elastic ring 6 is an open ring, the elastic ring 6 is fixedly installed at the front end of the body 1, and the inner ring space of the elastic ring 6 is used to place the piston with piston ring to be assembled. The piston is directly inserted into the inner ring of the elastic ring 6, and the piston ring is tightened by the contraction of the open ring; the piston is easy to put in and take out, the positioning is simple, and it is convenient for operators to quickly load materials, which is suitable for piston assembly operation conditions.

[0028] In summary, the improvement of this embodiment lies in: This device integrates the piston ring tightening mechanism and the piston pushing mechanism into the pistol-type handheld body 1. With the help of a high-pressure air source, the piston ring is tightened, the piston is pushed, and the mechanism is reset via self-reset buttons 1-2, 2-3, and 3-4, simplifying the assembly process. The pneumatic rotor 14 drives the elastic ring 6 to evenly tighten the piston ring via gear 13 and toothed steel belt 7, avoiding local compression damage. The piston-type push rod 9 drives the rubber hammer 8 to flexibly push the piston, eliminating knocking impact, reducing bumps and scratches on parts, and improving assembly consistency.

[0029] Working principle: During operation, the high-pressure gas source is introduced into the body 1 through the high-pressure gas inlet 5. Each reset button controls the opening and closing of the corresponding air passage, thereby distributing high-pressure gas to drive the operation of each actuator. During operation, place the piston with piston rings inside the elastic ring 6, press the self-reset button 34, the air passage 312 is opened, high-pressure gas is input into the pneumatic rotor 14 to drive it to rotate forward, drive the gear 13 to pull the toothed steel belt 7, so that the elastic ring 6 contracts and evenly tightens the piston rings. After tightening, press the self-reset button 2, the air passage 10 is opened, and high-pressure gas enters the rodless chamber of the piston-type push rod 9, pushing the piston-type push rod 9 forward. The piston is then axially and gently pushed by the coaxially arranged rubber hammer 8 to complete the cylinder assembly. After assembly, press the self-reset button 23, and air passage 21 and air passage 415 will be opened simultaneously. One path of high-pressure gas enters the rod chamber of the piston push rod 9 to make it retract, and the other path drives the pneumatic rotor 14 to reverse, releasing the toothed steel belt 7 to open and reset the elastic ring 6. The exhaust gas generated by the piston push rod 9 and the pneumatic rotor 14 is discharged to the outside through the air passage 16, eliminating the back pressure in the cavity, completing the entire assembly cycle, and preparing for the next piston assembly operation.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An automatic pneumatic-assisted piston assembly device, characterized in that, Includes a main body (1), which is provided with a self-reset button one (2), a self-reset button two (3), a self-reset button three (4) and a high-pressure air inlet (5); The front end of the body (1) is equipped with an elastic ring (6), and a toothed steel strip (7) is arranged around the elastic ring (6); the body (1) is provided with a piston-type push rod (9), and a rubber hammer (8) is fixed at the front end of the piston-type push rod (9). The main body (1) is also equipped with a gear (13) and a pneumatic rotor (14) that drives the gear (13) to rotate. The toothed steel belt (7) meshes with the gear (13). The main body (1) is equipped with air passage one (10), air passage two (11), air passage three (12), air passage four (15), and air passage five (16). The high-pressure air inlet (5) is connected to the piston push rod (9) and the pneumatic rotor (14) through each air passage. The reset button of each passage controls the opening and closing of the corresponding air passage.

2. The automatic pneumatic-assisted assembly piston device according to claim 1, characterized in that, One end of the toothed steel belt (7) is connected to the elastic ring (6), and the other end passes through one side of the body (1) to the other side. The toothed steel belt (7) located inside the body (1) meshes with the gear (13). The toothed steel belt (7) rotates with the gear (13) to realize the expansion and contraction, thereby controlling the contraction and opening of the elastic ring (6).

3. The automatic pneumatic-assisted assembly piston device according to claim 2, characterized in that, The output end of the pneumatic rotor (14) is connected to the gear (13) for transmission. The pneumatic rotor (14) can rotate forward and reverse, respectively driving the toothed steel belt (7) to tighten and release.

4. The automatic pneumatic-assisted assembly piston device according to claim 3, characterized in that, The self-reset button three (4) controls the air passage three (12) to open, and high-pressure gas is input into the pneumatic rotor (14) through the air passage three (12), driving the pneumatic rotor (14) to rotate forward, driving the gear (13) to tighten the toothed steel belt (7), so that the elastic ring (6) contracts and tightens the piston ring.

5. The automatic pneumatic-assisted assembly piston device according to claim 4, characterized in that, The self-reset button (2) controls the air passage (10) to open, and high-pressure gas enters the rodless chamber of the piston push rod (9) through the air passage (10), pushing the piston push rod (9) forward and the rubber hammer (8) axially pushes the piston to complete the assembly.

6. The automatic pneumatic-assisted assembly piston device according to claim 5, characterized in that, The self-reset button 2 (3) simultaneously controls the connection between air passage 2 (11) and air passage 4 (15); high-pressure gas is introduced into the piston push rod (9) through air passage 2 (11) to drive the piston push rod (9) to retract; high-pressure gas is input into the pneumatic rotor (14) through air passage 4 (15) to drive the pneumatic rotor (14) to reverse and release the toothed steel belt (7).

7. The automatic pneumatic-assisted assembly piston device according to claim 6, characterized in that, The fifth air passage (16) is an exhaust passage. During the operation of the piston-type push rod (9) and the pneumatic rotor (14), the internal exhaust gas is discharged to the outside through the fifth air passage (16).

8. The automatic pneumatic-assisted assembly piston device according to claim 7, characterized in that, The rubber hammer (8) is coaxially arranged at the center of the elastic ring (6), and the rubber hammer (8) moves axially back and forth with the piston-type push rod (9).

9. The automatic pneumatic-assisted assembly piston device according to claim 8, characterized in that, The main body (1) is a pistol-type handheld shell structure. The high-pressure air inlet (5) is arranged at the bottom of the handle of the main body (1). The self-reset button one (2), self-reset button two (3), and self-reset button three (4) are arranged vertically on the outer side wall of the handle of the main body (1).

10. The automatic pneumatic-assisted assembly piston device according to claim 9, characterized in that, The elastic ring (6) is an open-type annular component. The elastic ring (6) is fixedly installed at the front end of the body (1). The inner ring space of the elastic ring (6) is used to place the piston with piston ring to be assembled.

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