Online engine piston press-fitting device and engine piston press-fitting system

Abstract

The utility model provides an online engine piston press-fitting device and an engine piston press-fitting system, relates to the field of engine piston press-fitting, and adopts the technical scheme that the online engine piston press-fitting device comprises a mounting plate I and a mounting plate II which are oppositely arranged up and down, and further comprises a lifting assembly, a lifting plate, a press-fitting assembly and a press-fitting assembly, a positioning shaft is arranged on the lower surface of the top plate, and the positioning shaft can abut against the top of the engine shell after the follow fixture is lifted; the feeding assembly is arranged on the first mounting plate and located on one side of the conveyor, the feeding base is connected with a feeding driving assembly, and the moving direction of the feeding base is perpendicular to the conveying direction of the conveyor; and the press-fitting assembly is arranged on the second mounting plate, and the press-fitting assembly comprises a press-fitting air cylinder which is vertically arranged. The piston press-fitting device can achieve automatic press-fitting of pistons on a conveying line, does not need procedure turnover, and is high in automation degree and high in efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engine piston press fitting, especially to an online engine piston press fitting device and an engine piston press fitting system. BACKGROUND

[0002] The types of pistons are generally classified as diesel engine pistons, gasoline engine pistons, and general-purpose pistons. The function of a piston is to withstand gas pressure and transmit it to the connecting rod through the piston pin to drive the crankshaft to rotate. The top of the piston is also a component of the combustion chamber. The piston has developed into a high-tech product integrating lightweight high-strength new materials, profiled outer circle composite surfaces, and profiled pin holes, etc., to ensure the heat resistance, wear resistance, smooth guidance, and good sealing function of the piston, and to reduce the friction work loss of the engine, oil consumption, noise, and emissions.

[0003] In the prior art, the press fitting process of the piston needs to rely on a corresponding press fitting device. The press fitting device includes a mounting plate, a clamp is arranged on the mounting plate to clamp the engine housing, a press fitting cylinder is arranged on the mounting plate, a press fitting seat is arranged on the piston rod of the press fitting cylinder, and the press fitting seat is coaxially arranged with the cylinder port. During press fitting, the piston is placed in the press fitting seat, the press fitting cylinder is extended, and the piston is pressed into the cylinder body. Then, the press-fitted housing is disassembled and placed, and the logistics personnel transport the press-fitted engine housing to the next process.

[0004] With the above technical scheme, the engine housing needs to be continuously installed on the press fitting device by manual operation, which is low in efficiency and high in labor intensity. Moreover, process circulation is required, which greatly affects the production efficiency of the engine. UTILITY MODEL CONTENTS

[0005] To solve the technical problem of low engine piston press fitting efficiency in the prior art, the utility model provides an online engine piston press fitting device and an engine piston press fitting system, which can realize automatic press fitting of the piston on the conveying line, without process circulation, high automation, and high efficiency.

[0006] In the first aspect, the utility model provides an online engine piston press fitting device to solve the above technical problem, which comprises mounting plate one and mounting plate two arranged oppositely up and down, and the mounting plate one is arranged horizontally below the conveyor, and further comprises:

[0007] The lifting assembly comprises a lifting plate, the lifting plate is arranged liftably on the mounting plate one, the lifting plate is connected with a lifting driving member, the lifting plate is arranged inside the conveyor, and the lifting plate can lift the following clamp with the engine housing to separate from the conveyor;

[0008] A positioning assembly comprises a top plate located on the upper part of the conveyor, and a positioning shaft is arranged on the lower surface of the top plate and capable of abutting against the top of the engine shell after the lifting of the following clamp;

[0009] An upper feeding assembly is arranged on the installation plate and located on one side of the conveyor, and comprises an upper feeding seat and a pressing shaft, the pressing shaft is arranged on the upper feeding seat in an axially movable manner, the upper feeding seat is movably arranged on the installation plate, the upper feeding seat is connected with an upper feeding driving assembly, and the moving direction of the upper feeding seat is perpendicular to the conveying direction of the conveyor;

[0010] A pressing assembly is arranged on the installation plate, and comprises a vertically arranged pressing cylinder, and the piston shaft of the pressing cylinder is capable of abutting against the lower end of the pressing shaft through the installation plate.

[0011] The utility model discloses a lifting assembly, positioning assembly, upper feeding assembly and pressing assembly cooperate, realize directly on the conveyor piston pressing, do not need manual handling, clamping and logistics turnover, greatly reduce the labor intensity, improve the pressing efficiency.

[0012] Further, two conveying stoppers are arranged on the inner side of the conveyor, along the conveying direction, and the two stoppers are arranged at the front and rear ends of the lifting assembly respectively, and the conveying stoppers are provided with first sensors.

[0013] The utility model discloses a stopper, can control pressing rhythm, avoid multiple following clamps with engine shell form crowded at the lifting assembly, influence lifting and pressing.

[0014] Further, a check valve is arranged on the inner side of the conveyor and located at the rear end of the lifting assembly.

[0015] The utility model discloses a check valve can prevent the following clamp from slipping during lifting, guarantee safe and smooth lifting following clamp.

[0016] Further, the lifting assembly further comprises an upper limiting piece, the upper limiting piece is arranged on the installation plate, a limiting screw is vertically arranged on the upper limiting piece, and the limiting screw is capable of abutting against the upper surface of the following clamp.

[0017] The utility model discloses an upper limiting piece can prevent the following clamp from being excessively lifted, so that the positioning shaft damages the surface of the engine shell.

[0018] Further, the upper feeding driving assembly comprises an upper feeding cylinder, and the upper feeding cylinder is connected with the upper feeding seat.

[0019] Further, the upper feeding seat is vertically provided with a guide cylinder, the pressing shaft sequentially comprises a pressing part, a limiting part and a transmission part coaxially arranged from top to bottom, the pressing part is a conical structure, the transmission part is a cylindrical structure, and the transmission part is gap-fitted with the guide cylinder.

[0020] The utility model discloses a conical pressing part and gap-fitting transmission part and guide cylinder can guarantee the coaxial degree of piston and engine cylinder body, avoid the pressure deviation and cause damage to piston and engine cylinder inner wall.

[0021] Further, the transmission part lower end is provided with annular limiting slot, the piston rod top of pressing cylinder is provided with pressing seat, the pressing seat is provided with containing cavity, the containing cavity is inverted T type structure, the pressing seat one side is provided with opening still, the opening is towards the upper feeding seat, the opening is communicated with the containing cavity, and the transmission part lower end can be connected with the pressing seat.

[0022] The utility model discloses setting up pressing seat and limiting slot can pull down the pressing shaft reset when the pressing cylinder retracts.

[0023] Further, the lifting driving assembly comprises two lifting cylinders, the piston rods of the lifting cylinders are connected with the lifting plate, and the cylinder bodies of the lifting cylinders are connected with the mounting plate one.

[0024] Further, the utility model also comprises third inductor and fourth inductor, the third inductor and the fourth inductor are arranged on the mounting rod, the mounting rod is vertically arranged on the conveyor outside, the fourth inductor can sense engine shell, and the third inductor can sense the piston placed on the pressing shaft.

[0025] The utility model discloses setting up third inductor and fourth inductor can avoid piston missing and pressing cylinder early pressing, guarantee the reliability of pressing.

[0026] The utility model discloses an engine piston pressing system, which comprises a conveyor and the online engine piston pressing device described above.

[0027] The utility model discloses setting up mechanical arm feeding can further improve the pressing efficiency.

[0028] From the above technical scheme, the utility model has the following advantages:

[0029] The utility model provides an online engine piston press -fitting device and engine piston press -fitting system, through the cooperation of lifting subassembly, positioning component, feeding assembly and press -fitting component, realize piston press -fitting directly on conveyer, need not manual handling, clamping and logistics turnover, greatly reduce the labor intensity, promote press -fitting efficiency, through setting up stopper, can control press -fitting rhythm, avoid multiple with engine shell's accompanying fixture form crowded at lifting subassembly, influence lifting and press -fitting, through check valve can prevent the accompanying fixture from slipping in the lifting process, guarantee safe smooth lifting accompanying fixture, through setting up upper limit piece can prevent accompanying fixture from being excessively lifted, make positioning shaft damage engine shell surface, through setting up limit seat and limit board, can avoid feeding seat excessive extension and retraction, guarantee its positioning position's accuracy, through setting up the press -fitting of conical and the clearance fit between transmission part and guide cylinder, can guarantee the coaxial degree of piston and engine cylinder body, avoid press -biased, cause damage to piston and engine cylinder inner wall, through setting up press -fitting seat and limit groove, can pull down press -fitting axle reset when press -fitting cylinder retraction, through setting up third inductor and fourth inductor, can avoid piston missing and press -fitting cylinder press -fitting in advance, guarantee the reliability of press -fitting, through mechanical hand feeding, further promote press -fitting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0031] Figure 1 It is the structural schematic diagram of the embodiment one of the utility model.

[0032] Figure 2 It is the assembly structure schematic diagram of feeding assembly and press -fitting component in the embodiment one of the utility model.

[0033] Figure 3 It is the structural schematic diagram of feeding assembly in the embodiment one of the utility model.

[0034] Figure 4 It is the structural schematic diagram of lifting subassembly in the embodiment one of the utility model.

[0035] Figure 5 It is the structural schematic diagram of positioning component in the embodiment one of the utility model.

[0036] Figure 6 It is the structural schematic diagram of the embodiment two of the utility model.

[0037] In the diagram, 1. Feeding assembly; 101. Pressing shaft; 102. Feeding seat; 106. Feeding drive component; 107. Mounting plate one; 112. Pressing shaft; 113. Guide cylinder; 2. Pressing assembly; 201. Pressing cylinder; 202. Mounting plate two; 206. Mounting seat; 3. Lifting assembly; 301. Limit bolt; 302. Upper limit component; 303. Guide rod; 304. Lifting cylinder; 305. Lifting plate; 4. Conveyor; 5. Positioning assembly; 501. Top plate; 505. Positioning shaft; 6. Feeding robot; 7. Conveyor stop. Detailed Implementation

[0038] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent. Specific Implementation Method 1

[0040] like Figure 1 As shown in the figure, this specific embodiment provides an online engine piston pressing device, including a first mounting plate 107 and a second mounting plate 202 arranged vertically opposite each other, and also includes a lifting assembly 3, a positioning assembly 5, a feeding assembly 1, and a pressing assembly; the first mounting plate 107 is arranged horizontally below the conveyor 4; the lifting assembly 3 includes a lifting plate 305, which is movably mounted on the first mounting plate 107; the lifting plate 305 is connected to a lifting drive component; the lifting plate 305 is located inside the conveyor 4; the lifting plate 305 can lift the accompanying fixture with the engine housing mounted on it and detach it from the conveyor 4; the positioning assembly 5 includes a top plate 501, which is located above the conveyor 4; a positioning shaft 505 is provided on the lower surface of the top plate 501; the positioning shaft 505 can abut against the top of the engine housing after the accompanying fixture is raised. The lifting component 3 and the positioning component 5 are used to detach the accompanying clamp from the conveyor 4 and fix it at a set height. The feeding component 1 is set on the mounting plate 107 and located on one side of the conveyor 4. The feeding component 1 includes a feeding seat 102 and a pressing shaft 112. The pressing shaft 112 is axially movable on the feeding seat 102. The feeding seat 102 is movably set on the mounting plate 107. The feeding seat 102 is connected to a feeding drive component. The feeding movement direction of the feeding seat 102 is perpendicular to the conveying direction of the conveyor 4. The pressing component is set on the mounting plate 202. The pressing component includes a vertically arranged pressing cylinder 201. The piston shaft of the pressing cylinder 201 can pass through the mounting plate 107 and abut against the lower end of the pressing shaft 112. The mounting plate 107 is provided with through holes at corresponding positions to facilitate the extension and retraction of the pressing cylinder 201.

[0041] The present specific embodiment realizes direct piston press-fitting on the conveyor 4 by the cooperation of the lifting assembly 3, the positioning assembly 5, the feeding assembly 1 and the press-fitting assembly, without manual carrying, clamping and logistics turnover, greatly reducing the labor intensity and improving the press-fitting efficiency.

[0042] As shown in Figure 4 When the piston is press-fitted, the following clamp needs to be stopped. In order to control the press-fitting rhythm and avoid the congestion of multiple following clamps behind the lifting assembly 3, two conveying stoppers 7 are further included in the present specific embodiment. The two conveying stoppers 7 are arranged on the inner side of the conveyor 4 along the conveying direction, and the two stoppers are respectively arranged at the front and rear ends of the lifting assembly 3. The conveying stoppers 7 are each provided with a first sensor. In the present specific embodiment, the first sensor is a proximity switch. When the rear conveying stopper 7 senses the following clamp, the stop block of the stopper rises to block the continuous movement of the following clamp. When the conveying stopper 7 receives a release signal, the stop block falls to release. Until the following clamp moves to the rear of the front conveying stopper 7 and is sensed by the first sensor thereon, the stop block of the front conveying stopper 7 rises to prevent the following clamp from continuing to move. The following clamp waits for press-fitting at this position until the front conveying stopper 7 receives a release signal and its stop block falls. In the present specific embodiment, the conveying stopper 7 is a prior art that can be purchased on the market, and the structure thereof will not be described herein.

[0043] As shown in Figure 4 In the present specific embodiment, the lifting drive assembly includes two lifting cylinders 304. In order to ensure stable lifting, the two lifting cylinders 304 are arranged along the diagonal line of the lifting plate 305. The piston rod of the lifting cylinder 304 is connected with the lifting plate 305, and the cylinder body of the lifting cylinder 304 is connected with the mounting plate one 107. The lower part of the lifting plate 305 is provided with a guide rod 303, and the guide rod 303 penetrates the mounting plate one 107.

[0044] Since the engine housing is a special-shaped part, there is a possibility of deviation of the following clamp during lifting. In order to ensure the safety of lifting, a check valve is further included in the present specific embodiment. The check valve is arranged on the inner side of the conveyor 4 and located at the rear end of the lifting assembly 3. In the present specific embodiment, the check valve is a prior art that can be purchased on the market, and the structure thereof will not be described herein.

[0045] As shown in Figure 5As shown, in the specific embodiment, the accompanying clamp is lifted so that the engine shell abuts the positioning shaft 505 to achieve clamping. In order to avoid excessive lifting of the engine shell and generate a large force between the engine shell and the positioning shaft 505, the lifting assembly 3 further comprises an upper limiting piece 302, which is arranged on the mounting plate 107. The upper limiting piece 302 has a Z-shaped structure, and a limiting screw is arranged vertically on the upper part of the upper limiting piece 302. The limiting screw can abut the upper surface of the accompanying clamp. Further, the upper limiting piece 302 is provided with four upper limiting pieces, which are distributed at the four corners of the accompanying clamp. In use, the extension distance of the limiting screw is adjusted as needed.

[0046] As shown in Figure 2 and Figure 3 The feeding seat 102 can be driven by an electric cylinder to move linearly. However, since the moving distance of the feeding seat 102 is a fixed value, in order to reduce the manufacturing cost and control difficulty of the device, in the specific embodiment, the feeding driving assembly comprises a feeding cylinder 106 connected with the feeding seat 102, which drives the feeding seat 102 to move linearly.

[0047] In order to improve the pressing precision and ensure the pressing quality, in the specific embodiment, a guide cylinder 113 is arranged vertically on the feeding seat 102. The pressing shaft 112 sequentially comprises a pressing part, a limiting part and a transmission part arranged coaxially from top to bottom. The pressing part has a conical structure with a pointed end upward. The diameter of the limiting part is larger than that of the pressing part. The transmission part has a cylindrical structure and is in clearance fit with the guide cylinder 113. In this way, the coaxiality of the piston and the engine cylinder body can be ensured, and the pressing deviation can be avoided to cause damage to the piston and the inner wall of the engine cylinder body.

[0048] In order to ensure the smooth return of the pressing shaft 112 after pressing, in the specific embodiment, a ring-shaped limiting groove is arranged on the outer circumferential surface of the lower end of the transmission part. The piston rod of the pressing cylinder 201 is provided with a pressing seat, and the pressing seat is provided with an accommodating cavity in a reverse T-shaped structure. An opening is further arranged on one side of the pressing seat, which faces the feeding seat 102 and is in communication with the accommodating cavity. The lower end of the transmission part can be clamped with the pressing seat. In operation, after the feeding seat 102 is moved to the position, the lower end of the pressing shaft 112 enters the accommodating cavity of the pressing seat through the opening. When the pressing cylinder 201 is extended, the top surface of the pressing seat abuts the upper top surface of the limiting groove to drive the pressing shaft 112 to move upward until the pressing is completed. When the pressing cylinder 201 is retracted, the pressing shaft 112 is pulled down to the set position, and the reaction movement of the feeding seat 102 drives the pressing shaft 112 to move out of the pressing seat from the opening.

[0049] As preferred, the specific embodiment further comprises a third sensor and a fourth sensor, the third sensor and the fourth sensor are arranged on the mounting rod, the mounting rod is arranged vertically outside the conveyor 4, the fourth sensor can sense the engine housing, and the third sensor can sense the piston placed on the press-fitting shaft 112; by arranging the third sensor and the fourth sensor, the piston missing and the press-fitting cylinder 201 being press-fitted in advance can be avoided, and the reliability of press-fitting can be ensured. Specific embodiment two

[0051] As Figure 6 shown, the specific embodiment provides an engine piston press-fitting system, which comprises a conveyor 4 and a feeding manipulator 6, and further comprises the online engine piston press-fitting device of the specific embodiment one, the mounting plate one 107 is arranged across the lower part of the conveyor 4, the mounting plate one 107 is connected with the mounting plate two 202, the mounting plate two 202 is arranged on one side of the conveyor 4, the top plate 501 is connected with the mounting plate one 107 through a connecting rod, the feeding manipulator 6 is located on one side of the mounting plate two 202, the feeding manipulator 6 can place the piston to be press-fitted on the press-fitting shaft 112, the feeding manipulator 6 comprises a six-axis manipulator and an end gripper, and the gripper comprises a finger cylinder.

[0052] In the specific embodiment, the conveyor 4 adopts a chain conveyor 4, the two ends of the traveling clamp are clamped on two moving chain plates, and the manipulator arm is hoisted on the mounting frame 09.

[0053] The working process of the engine piston press-fitting system is as follows:

[0054] S01: the traveling clamp is released by the rear conveying stopper 7;

[0055] S02: when the traveling clamp drives the engine housing to move to the set position, the stop block of the front conveying stopper 7 is lifted, and the check valve is popped up;

[0056] S03: the lifting cylinder 304 acts to lift the traveling clamp, and the engine housing abuts against the end of the positioning shaft 505;

[0057] S04: the feeding manipulator 6 places the piston to be press-fitted on the press-fitting part of the press-fitting shaft 112;

[0058] S05: when the third sensor and the fourth sensor both send sensing signals, the feeding seat 102 is moved to the position under the action of the feeding cylinder 106, and the lower part of the press-fitting shaft 112 is clamped in the press-fitting seat;

[0059] S06: the piston rod of the press-fitting cylinder 201 is extended to push the press-fitting shaft 112 to press-fit the piston into the cylinder body;

[0060] S07: after the press-fitting cylinder 201 is retracted, the feeding seat 102 is retracted, the front conveying stopper 7 is released, the lifting cylinder 304 is retracted, and the accompanying cylinder is returned to the conveyor 4 again to forward convey;

[0061] S08: cycles S01 to S07 until the press-fitting is completed.

[0062] It can be seen from the above specific embodiments that the utility model has the following beneficial effects:

[0063] 1. Through the cooperation of the lifting assembly 3, the positioning assembly 5, the feeding assembly 1 and the press-fitting assembly, direct press-fitting of the piston on the conveyor 4 is realized, manual carrying, clamping and logistics turnover are not needed, labor intensity is greatly reduced, and press-fitting efficiency is improved;

[0064] 2. Through the setting of the conveying stopper 7, the press-fitting rhythm can be controlled, and congestion of multiple accompanying jigs with engine housings at the lifting assembly 3 is avoided, and lifting and press-fitting are affected;

[0065] 3. The check valve can prevent the accompanying jig from slipping during lifting, and safe and smooth lifting of the accompanying jig is ensured;

[0066] 4. The upper limiting piece 302 can prevent the accompanying jig from being excessively lifted, so that the positioning shaft 505 damages the surface of the engine housing;

[0067] 5. The tapered press-fitting part and the gap cooperation between the transmission part and the guide cylinder can ensure the coaxiality of the piston and the engine cylinder, avoid press deviation, and cause damage to the piston and the inner wall of the engine cylinder;

[0068] 6. The press-fitting seat and the limiting groove can pull down the press-fitting shaft 112 back when the press-fitting cylinder 201 is retracted; the third inductor and the fourth inductor can avoid piston missing and press-fitting of the press-fitting cylinder 201 in advance, and ensure the reliability of press-fitting;

[0069] 7. The press-fitting efficiency is further improved through the mechanical hand feeding.

[0070] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An on-line engine piston press fitting device, comprising an installation plate one (107) and an installation plate two (202) arranged oppositely, the installation plate one (107) is arranged across below the conveyor, characterized in that, Also include: The lifting assembly (3) includes a lifting plate (305) which is arranged on the mounting plate (107) and is connected with a lifting driving member, the lifting plate (305) is arranged in the conveyor (4), and the lifting plate (305) can lift the traveling clamp with the engine shell away from the conveyor (4); The positioning assembly (5) includes a top plate (501) located on the upper part of the conveyor (4), and the lower surface of the top plate (501) is provided with a positioning shaft (505) which can abut against the top of the engine shell after the traveling clamp is lifted; The feeding assembly (1) is arranged on the mounting plate (107) and located on one side of the conveyor (4), and the feeding assembly (1) includes a feeding seat (102) and a pressing shaft (112), the pressing shaft (112) is arranged on the feeding seat (102) and can move axially, the feeding seat (102) is movably arranged on the mounting plate (107), and the feeding seat (102) is connected with a feeding driving assembly, and the moving direction of the feeding seat (102) is perpendicular to the conveying direction of the conveyor (4); The pressing assembly is arranged on the mounting plate (202), and the pressing assembly includes a vertically arranged pressing cylinder (201), and the piston shaft of the pressing cylinder (201) can penetrate through the mounting plate (107) and abut against the lower end of the pressing shaft (112).

2. An on-line engine piston press fitting device as set forth in claim 1, characterized in that, Two conveying stoppers (7) are arranged inside the conveyor (4), and the two conveying stoppers (7) are arranged at the front and rear ends of the lifting assembly (3) along the conveying direction, and the conveying stopper (7) is provided with a first sensor.

3. An on-line engine piston press fitting apparatus as set forth in claim 2 wherein, A check valve is arranged inside the conveyor (4) and located at the rear end of the lifting assembly (3).

4. An on-line engine piston press fitting apparatus as set forth in claim 3 wherein, The lifting assembly (3) further includes an upper limiting piece (302) arranged on the mounting plate (107), and a limiting screw is vertically arranged on the upper limiting piece (302) and can abut against the upper surface of the traveling clamp.

5. An on-line engine piston press fitting apparatus as set forth in claim 4 wherein, The feeding driving assembly includes a feeding cylinder (106) connected with the feeding seat (102).

6. An on-line engine piston press fitting apparatus as set forth in claim 5, wherein, A guide cylinder is vertically arranged on the feeding seat (102), the pressing shaft (112) includes a pressing part and a transmission part, the pressing part is a conical structure, the transmission part is a cylindrical structure, and the transmission part is gap-fitted with the guide cylinder.

7. An on-line engine piston press fitting apparatus as set forth in claim 6 wherein, The lower end of the transmission part is provided with an annular limiting groove, the top of the piston rod of the pressing cylinder (201) is provided with a pressing seat, the pressing seat is provided with a containing cavity, the containing cavity is a reverse T-shaped structure, one side of the pressing seat is further provided with an opening, the opening faces the feeding seat (102), the opening is communicated with the containing cavity, and the lower end of the transmission part can be clamped with the pressing seat.

8. An on-line engine piston press fitting apparatus as set forth in claim 7, characterized by The lifting driving assembly comprises two lifting cylinders (304), the two lifting cylinders (304) are arranged along diagonals of the lifting plate (305), a piston rod of the lifting cylinder (304) is connected with the lifting plate (305), and a cylinder body of the lifting cylinder (304) is connected with the mounting plate one.

9. An on-line engine piston press fitting apparatus as set forth in claim 7, wherein, The third inductor and the fourth inductor are arranged on a mounting rod, the mounting rod is vertically arranged outside the conveyor (4), the fourth inductor can induct the engine shell, and the third inductor can induct the piston placed on the pressing shaft (112).

10. An engine piston press fitting system comprising a conveyor (4), characterized in that The online engine piston pressing device also comprises the mounting plate one (107) arranged at a lower part of the conveyor (4), the mounting plate two connected with the mounting plate one (107), the mounting plate two arranged at one side of the conveyor (4), the top plate (501) connected with the mounting plate one (107) through a connecting rod, and the feeding mechanical arm (6) located at one side of the mounting plate two, the feeding mechanical arm (6) can place the piston to be pressed on the pressing shaft (112).

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