CN109128822B

CN109128822B - Full-automatic assembly process and production line for rocker arm valve of engine

Info

Publication number: CN109128822B
Application number: CN201811315820.4A
Authority: CN
Inventors: 杨书桐; 于清涛; 陈茂雷; 曹小龙; 褚洪波
Original assignee: Jinan Yi Hang Technology Co ltd
Current assignee: Jinan Yi Hang Technology Co ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2023-04-07
Anticipated expiration: 2038-11-06
Also published as: CN109128822A

Abstract

A full-automatic assembly process and a production line for an engine valve rocker arm are disclosed, wherein the assembly process comprises the following steps: loading a rocker arm, installing an adjusting screw and a loosening nut, installing a roller and a rolling pin, riveting the rocker arm rolling pin, detecting the riveting of the rocker arm rolling pin, and loading the rocker arm into a rocker arm shaft, a check ring and a clamp spring to press two ends; the production line comprises a rocker arm feeding system, a rocker arm assembly sub-packaging system and a rocker arm assembling system which are sequentially arranged; a rocker arm feeding robot is arranged between the rocker arm feeding system and the rocker arm assembly subpackaging system, and an accessory feeding robot is arranged between the rocker arm assembly subpackaging system and the rocker arm assembling system; the invention realizes the one-time assembly of the roller, the rolling pin and the rocker arm, realizes the simultaneous installation of the air inlet rocker arm and the exhaust rocker arm into the rocker arm shaft, and automatically installs the snap springs and the check rings at two ends, and has high assembly efficiency and high precision. The installation space is reduced, and the feeding efficiency, the assembly efficiency and the assembly precision are improved; not only realize full automatic assembly, can also carry out process quality control, it is smooth and easy that the commodity circulation of rationally arranging.

Description

Full-automatic assembly process and production line for rocker arm valve of engine

Technical Field

The invention relates to a process for assembling an engine valve rocker and a production line for realizing the process route, belonging to the technical field of engine valve rocker assembly.

Background

The valve rocker of the automobile engine is shown in fig. 1 and comprises an air inlet rocker 03, a rocker shaft 04 and an air outlet rocker 06, wherein the air inlet rocker 03 and the air outlet rocker 06 are respectively installed on the left side and the right side of the rocker shaft 04, the air inlet rocker 03 is axially positioned through a left retainer ring 02 and a left snap spring 01, the air outlet rocker 06 is axially positioned through a right retainer ring 07 and a right snap spring 08, and the rocker shaft 04 is provided with a rocker shaft seat 05. Adjusting screws 09 are arranged at one ends of the air inlet rocker arm 03 and the air outlet rocker arm 06, locknuts 010 are arranged on the adjusting screws 09, and idler wheels 012 are arranged at the other ends of the adjusting screws 011.

At present, the automobile engine still does not realize comprehensive automation in the aspect of assembling the rocker arm. The intake rocker arm and the exhaust rocker arm are assembled to the rocker shaft, and the work of installing snap spring retainer rings at the two ends of the rocker shaft is finished manually, so that the assembly efficiency is low and the precision is poor; the retainer ring and the clamp spring are independently and automatically fed, and the retainer ring and the clamp spring cannot be simultaneously and automatically fed, so that the retainer ring and the clamp spring cannot be synchronously fed and cannot be simultaneously conveyed in place, and the assembly efficiency is reduced; the assembly of the adjusting screw and the locknut is manually completed, so that the automatic feeding of the adjusting screw and the locknut cannot be realized, and the adjusting screw is simultaneously screwed into the automobile rocker arm and the locknut, so that the assembly efficiency is reduced; the assembly of gyro wheel and roll round pin all adopts artifical the completion, can not realize that the rocking arm rolls the automatic car rocking arm and the rocking arm gyro wheel that penetrates simultaneously of round pin, and assembly efficiency is low, and the precision is poor.

With the rapid development of the automobile industry and the requirements on intelligent manufacturing, the research of an intelligent numerical control system in the assembly process of key parts of an automobile integrates the latest information numerical control technologies such as cloud computing, big data, internet of things and the like with production management, realizes effective information transmission between an assembly site and an enterprise MES (manufacturing enterprise production process execution system) while realizing the replacement of manual operation by a robot, establishes a foundation for the development of realizing factory digital management of each enterprise, and provides new higher requirements for the assembly and manufacturing method and key equipment of an automobile engine.

1. In order to meet the continuously-improved market demand, under the condition of not expanding the investment of production equipment, the automobile enterprises improve the beat of an engine assembly line to the highest capacity by improving the production efficiency of the existing main equipment, and the beat is improved to 2 minutes per unit from 3 minutes per unit, so that higher requirements are also placed on the assembly demand of corresponding parts;

2. the assembly and manufacture of the automobile engine gradually develops from the traditional semi-automatic assembly to the process standardization, high intelligence and high networking, the production plan, the market demand and the after-sale information are directly networked, the new requirements of information interconnection and intercommunication are provided for manufacturing equipment, and the new requirements of the assembly informatization of key parts of the engine which is still manually assembled are provided;

3. automobile enterprises require no increase in production, not only can the requirement for efficient production of novel vehicles be met, but also operators cannot be increased, and the number of equipment operators is reduced;

4. automobile enterprises put forward new requirements on energy conservation and emission reduction on key equipment, the production capacity of the engine is improved, low energy investment is realized, and a brand new concept is provided for the assembly of the corresponding engine in the aspects of energy conservation and environmental protection;

5. newly building an engine production line and a traditional old production line, continuously reducing the occupied area on the spatial layout of a workshop, controlling the length of the production line, improving the output value of unit area, and requiring the split charging layout of each part of the engine to meet the requirement of logistics transportation and simultaneously reducing the occupied area as much as possible;

by combining the requirements, the traditional semi-automatic assembly technology of the engine valve rocker cannot meet the production requirement. The market urgently needs a full-automatic automobile engine valve rocker arm assembly technology.

Disclosure of Invention

The invention provides a full-automatic assembly process of an engine valve rocker arm, which can realize full-automatic assembly and a full-automatic assembly production line of the engine valve rocker arm, aiming at the defect that the existing engine rocker arm assembly technology can only realize semi-automatic assembly.

The invention discloses a full-automatic assembly process of an engine valve rocker, which comprises the following steps:

(1) Rocker arm feeding:

(1) the rocker arm is fed through the sliding table, the positioning tray is placed on the sliding table, the air inlet rocker arm is fed to the positioning tray of the air inlet rocker arm sliding table, and the exhaust rocker arm is fed to the positioning tray of the exhaust rocker arm sliding table;

(2) the rocker arm is conveyed to a robot working area through the sliding table, the robot automatically grabs the rocker arm according to a set program, automatically memorizes the position and the direction of the rocker arm in the positioning tray, and places the rocker arm on the positioning tray of a subsequent station according to the set direction after grabbing;

(2) Installing an adjusting screw and loosening a nut:

(1) conveying the positioning tray and the rocker arm thereon to the station through a conveying line, and accurately positioning the rocker arm after the positioning tray and the rocker arm are in place;

(2) the adjusting screw and the locknut are arranged by the vibrating screen, after the arrangement, the adjusting screw and the locknut are conveyed, guided and positioned one by one, so that the adjusting screw, the rocker arm and the locknut are sequentially arranged from top to bottom, and the posture and the angle of the locknut are fixed in the screwing process;

(3) screwing the adjusting screw in place, and ensuring that the assembling position of the screw meets the requirement by detecting the screwing torque and the screwing angle;

(4) after the positioning tray and the rocker arm are screwed in place, the positioning tray and the rocker arm enter the next station;

(3) Mounting the roller and the roller pin:

(1) the rocker arm is conveyed to the station on the positioning tray, and the rocker arm is accurately positioned after the rocker arm is in place;

(2) the roller and the rolling pin are sorted by a vibrating screen, and after sorting, the roller and the rolling pin are respectively conveyed in place one by one, so that the central axes of the roller, the rolling pin and the rocker arm rolling pin hole are consistent;

(3) pressing a rolling pin into the rocker arm and the roller at the same time;

(4) detecting the in-place of the roller and the rolling pin, and giving an alarm when the roller and the rolling pin are not installed in place;

(5) after the rollers and the rolling pins are detected to be assembled in place, the positioning tray and the rocker arm are conveyed to the next station;

(4) Riveting a rocker arm roller pin:

(1) the positioning tray and the rocker arm are arranged on the riveting machine to be riveted with the rolling pin;

(2) conveying the rocker arm riveted by the roll pin to a detection station for detection;

(5) And (3) riveting and detecting a rocker arm roller pin:

(1) respectively detecting applied pressure and displacement variable quantity through a pressure sensor and a displacement sensor, and storing detected pressure and displacement values;

(2) whether the riveting of the roll pin is qualified or not is judged by detecting the displacement change of the roll pin through respectively applying pressure to the two sides of the roll pin after riveting: grabbing the detected qualified workpiece to a position where the rocker arm is arranged in the rocker arm shaft by a robot;

(6) The rocker arm is arranged in the rocker shaft:

(1) the rocker shaft and the rocker shaft seat are respectively fed by a robot, the rocker shaft seat is firstly arranged in the rocker shaft positioning seat, then the rocker shaft is arranged on the rocker shaft seat, and the rocker shaft seat is connected with the rocker shaft positioning seat by a positioning pin;

(2) respectively placing an exhaust rocker arm and an intake rocker arm on two sides of a rocker shaft, and simultaneously pushing the exhaust rocker arm and the intake rocker arm into the rocker shaft;

(3) and (4) detecting the rocker arm in place and detecting the direction of the rocker arm in a positive and negative way, and sending the workpiece to the next station by the rocker shaft positioning seat after detecting that the workpiece is pushed in place.

(7) Pressing a check ring and a clamp spring:

(1) respectively conveying the single check ring and the clamp spring to a feeding position;

(2) the robot snatchs auxiliary tool shaft and wears retaining ring and jump ring on auxiliary tool shaft, realizes that retaining ring and jump ring once pack into automatically through auxiliary tool shaft.

(3) And pushing the retainer rings and the clamp springs on the auxiliary tool shafts on the two sides into the two ends of the rocker shaft.

The full-automatic assembly production line for the engine valve rocker arm for realizing the process adopts the following technical scheme:

the production line comprises a rocker arm feeding system, a rocker arm assembly split charging system and a rocker arm assembling system which are arranged in sequence; a rocker arm feeding robot is arranged between the rocker arm feeding system and the rocker arm assembly subpackaging system, and an accessory feeding robot is arranged between the rocker arm assembly subpackaging system and the rocker arm assembling system; the rocker arm feeding system comprises an air inlet rocker arm feeding system and an air outlet rocker arm feeding system which are arranged in parallel; the rocker arm assembly subpackaging system comprises an air inlet rocker arm assembly subpackaging system and an exhaust rocker arm assembly subpackaging system which are arranged in parallel.

The air inlet rocker arm feeding system or the exhaust rocker arm feeding system comprises two sliding tables which are arranged in parallel, and each sliding table is provided with a positioning tray for containing rocker arms.

The air inlet rocker arm assembly subpackaging system or the exhaust rocker arm assembly subpackaging system comprises a rocker arm conveying line, wherein a positioning tray is arranged on the rocker arm conveying line, a rocker arm screw nut assembling station and a rocker arm roller assembly station are arranged along the rocker arm conveying line, and a rocker arm screw nut assembling device and a rocker arm roller assembly device are respectively arranged on the rocker arm screw nut assembling station and the rocker arm roller assembly station;

the screw and nut loading device comprises a nut feeding mechanism, a screw feeding mechanism, a nut guide mechanism, a screw guide device and a tightening machine; the nut feeding mechanism and the screw feeding mechanism are arranged on the outer side of the tightening machine and connected with the nut guide mechanism, and the screw feeding mechanism is connected with the screw guide device.

The nut feeding mechanism comprises a nut vibrating screen and a nut conveying pipe, and the nut conveying pipe is connected between a discharge port of the nut vibrating screen and the nut guiding device. The nut guide mechanism comprises a base, a nut pushing cylinder, a nut positioning seat and a positioning cylinder, the nut pushing cylinder is horizontally installed on the base, the nut positioning seat is connected with the nut pushing cylinder, the nut positioning cylinder is vertically installed on the base, and a limiting block is connected to the nut positioning cylinder.

The screw feeding mechanism comprises a screw vibrating screen and a screw conveying pipe, and the screw conveying pipe is connected between a discharge hole of the screw vibrating screen and a screw guiding device. The screw guiding device comprises a tool seat and a pre-pressing cylinder, the pre-pressing cylinder is arranged on the upper portion of the tool seat, the lower end of the tool seat is an adjusting screw outlet, and an adjusting screw inlet is arranged on the outer side of the tool seat and is located below the pre-pressing cylinder.

The tightening machine comprises a rocker arm positioning mechanism and a tightening mechanism, and the rocker arm positioning mechanism is connected to the tightening mechanism; the rocker arm positioning mechanism comprises a positioning seat, a rocker arm positioning cylinder, a limiting central shaft, an angular positioning pin and a pin hole guide cylinder, wherein the rocker arm positioning cylinder and the pin hole guide cylinder are both arranged on the positioning seat; the tightening mechanism comprises a connecting frame, a lifting seat, a lifting cylinder and a tightening tool, the connecting frame is connected to the positioning seat in the rocker arm positioning mechanism, a lifting guide rail is arranged on the connecting frame, the lifting cylinder is installed on the connecting frame, the lifting seat is installed on the lifting guide rail of the connecting frame and connected with the lifting cylinder, and the tightening tool is installed on the lifting seat. The tightening tool comprises a motor, a tightening shaft and a screwdriver head, the tightening shaft is mounted on the motor, the screwdriver head is inserted into an inner hole in the front end of the tightening shaft, and a compression spring is arranged in the inner hole in the front end of the tightening shaft.

The rocker roller assembly device comprises a roller pin butt joint loading mechanism, a carrying manipulator and a riveting machine, wherein the carrying manipulator is arranged between the roller pin butt joint loading mechanism and the riveting machine; the roller pin rolling and loading mechanism comprises a roller feeding mechanism, a roller pin receiving and positioning mechanism, a roller positioning and pushing mechanism, a roller receiving mechanism, a rocker arm positioning mechanism and a roller pin pressing-in mechanism. The rocker arm is positioned through the rocker arm positioning mechanism, the angular positioning pin of the rocker arm positioning mechanism firstly penetrates through the rocker arm and the roller and then is matched with the roller pin central positioning guide seat, the central axes of the roller, the roller pin and the air inlet rocker arm in the assembling process are ensured to be consistent, the roller pin penetrates through the roller pin central positioning guide seat and then penetrates into the air inlet rocker arm and the rocker arm roller through the roller pin pressing-in mechanism, and meanwhile, the angular positioning pin of the rocker arm positioning mechanism is pressed out. And the carrying manipulator carries the rocker arm penetrating the roller and the rolling pin and the positioning tray thereof to a riveting machine for rolling pin riveting, and carries the rocker arm to a rocker arm pushing force detection mechanism for detection after riveting.

And the roller feeding mechanism and the roller pin feeding mechanism both adopt vibrating screens.

The roll pin material-receiving positioning mechanism comprises a roll pin positioning seat and a roll pin central positioning guide seat, the roll pin positioning seat and the roll pin central positioning guide seat are both arranged on a press-mounting frame of the roll pin press-in mechanism, and the roll pin central positioning guide seat is arranged in front of the roll pin positioning seat; the roll pin pressing-in mechanism comprises a press-mounting frame, a roll pin pressing-in air cylinder, a roll pin pressing rod and a guide seat, the roll pin pressing-in air cylinder and the guide seat are both mounted on the press-mounting frame, the guide seat is arranged in front of the roll pin pressing-in air cylinder, and the roll pin pressing rod is sleeved in the guide seat and connected with the roll pin pressing-in air cylinder. The roller pin is pressed into the cylinder to drive the roller pin pressing rod to pass through the guide seat, and the roller pin which is placed on the roller pin positioning seat in advance through the rocker arm roller pin feeding mechanism penetrates through the roller pin center positioning guide seat to be pressed into the air inlet rocker arm, so that one-time assembly of the roller, the roller pin and the rocker arm is realized.

The roller positioning pushing mechanism comprises a pushing seat, a pushing cylinder, a flat pushing block, a roller pressing cylinder and a roller pressing block, wherein a roller feeding groove is formed in the pushing seat, the pushing cylinder is installed on the pushing seat, the flat pushing block is located below the roller feeding groove and connected with the pushing cylinder, a roller limiting groove is formed in the flat pushing block, the roller pressing cylinder is installed on the pushing seat, and the roller pressing block is located on the front side of the flat pushing block and connected with the roller pressing cylinder. The roller is conveyed through the roller feeding mechanism and falls into the horizontal pushing block through the pushing seat, when the roller receiving mechanism reaches the receiving position, the pushing cylinder advances to drive the roller falling into the roller horizontal pushing block to advance, the roller falls into the receiving block in the roller receiving mechanism, then the roller pressing cylinder drives the roller pressing block to press the roller, and the roller is pressed downwards until the lower assembly position is ready for assembly.

The roller receiving mechanism comprises a receiving frame, a roller receiving jacking cylinder, a receiving block, a roller height limiting cylinder and a limiting block, wherein the roller receiving jacking cylinder is mounted on the receiving frame, the receiving block is connected to the roller receiving jacking cylinder, the roller height limiting cylinder is mounted on the receiving frame, and the limiting block is connected to the roller height limiting cylinder. The gyro wheel connects material jacking cylinder to drive and connects the material piece to rise to the cylinder maximum stroke, and the high spacing cylinder of gyro wheel drives the stopper and gos forward, stretches into and connects the material piece below, and the gyro wheel connects material jacking cylinder to drive and connects the material piece decline, accomplishes connecing of gyro wheel and spacing after connecing material piece and the stopper contact.

The rocker arm push-out force detection mechanism comprises a left side press-mounting air cylinder and a right side press-mounting air cylinder which apply pushing force to two sides of a rolling pin, pressure is respectively applied to two sides of the rolling pin after riveting, the applied pressure is detected through a pressure sensor, the displacement change of the rolling pin is detected through a displacement sensor, and whether the rolling pin riveting is qualified or not is judged through the displacement change.

The rocker arm assembling system comprises a rocker arm circulating conveying line, wherein a rocker arm press-in station and a retainer ring clamp spring assembling station are arranged on the rocker arm shaft circulating conveying line; an air inlet rocker arm robot and an air exhaust rocker arm robot are respectively arranged on two sides of the rocker arm shaft circulating conveying line, and a rocker arm shaft positioning seat is arranged on the rocker arm shaft circulating conveying line; the rocker arm pressing station is provided with an air inlet rocker arm assembling and butting mechanism, an exhaust rocker arm assembling and butting mechanism, a rocker arm shaft jacking mechanism and a rocker arm shaft pressing limiting mechanism, the air inlet rocker arm assembling and butting mechanism and the exhaust rocker arm assembling and butting mechanism are oppositely arranged on the inner side and the outer side of the rocker arm shaft circulating conveying line, the front part of the air inlet rocker arm assembling and butting mechanism is provided with an air inlet rocker arm position limiting tool, the front part of the exhaust rocker arm assembling and butting mechanism is provided with an exhaust rocker arm position limiting tool, the rocker arm shaft jacking mechanism is arranged in the rocker arm shaft circulating conveying line and is positioned between the air inlet rocker arm assembling and butting mechanism and the exhaust rocker arm assembling and butting mechanism, and the rocker arm shaft pressing limiting mechanism is arranged above the rocker arm shaft jacking mechanism; retainer ring jump ring assembly station department is provided with the rocking arm retaining ring jump ring feed mechanism that admits air, exhaust rocking arm retaining ring jump ring feed mechanism, rocking arm retaining ring jump ring impressing mechanism and exhaust rocking arm retaining ring jump ring impressing mechanism admit air, exhaust rocking arm retaining ring jump ring impressing mechanism sets up the inside and outside both sides at rocking arm axle circulation transfer chain respectively with rocking arm retaining ring jump ring impressing mechanism admits air, rocking arm retaining ring jump ring feed mechanism that admits air sets up in the top of rocking arm retaining ring impress mechanism that admits air, exhaust rocking arm retaining ring jump ring feed mechanism sets up in the top of exhaust rocking arm retaining ring jump ring impressing mechanism, the butt joint interface of pre-compaction frock axle is all installed to exhaust rocking arm retaining ring jump ring impress mechanism and the front portion of rocking arm retaining ring impress mechanism that admits air.

The air inlet rocker arm assembly butt-joint mechanism or the exhaust rocker arm assembly butt-joint mechanism comprises a base, an press-in cylinder and a pressure head, wherein a guide rail is arranged on the base, the press-in cylinder is installed on the base, and the pressure head is installed on the guide rail of the base and connected with the press-in cylinder.

The rocker shaft jacking mechanism comprises a mounting seat, a jacking cylinder and a jacking seat, wherein the jacking cylinder is mounted on the mounting seat, and the jacking cylinder is connected with the jacking seat.

The air inlet rocker arm retainer ring clamp spring feeding mechanism or the exhaust rocker arm retainer ring clamp spring feeding mechanism comprises a bottom plate, a material column supporting frame, a clamp spring feeding column, a retainer ring feeding cylinder, a retainer ring feeding push plate, a clamp spring feeding push plate and a clamp spring feeding cylinder, wherein the material column supporting frame is vertically installed on the bottom plate, and the clamp spring feeding column and the retainer ring feeding column are suspended on the upper part of the material column supporting frame; a material separating plate and a pressing plate are sequentially arranged above the bottom plate, and two layers of spaces are formed among the bottom plate, the material separating plate and the pressing plate; the retainer ring feeding push plate is arranged in a space between the material separating plate and the pressing plate and is connected with the retainer ring feeding cylinder, and the retainer ring feeding cylinder drives the retainer ring feeding push plate to reciprocate so as to realize automatic feeding of the retainer ring; the clamp spring feeding push plate is arranged in a space between the bottom plate and the material separating plate and is connected with the clamp spring feeding cylinder, and the clamp spring feeding cylinder drives the clamp spring feeding push plate to reciprocate to realize automatic feeding of the clamp spring; check ring material loading cylinder and jump ring material loading cylinder all install in one side of bottom plate, and the opposite side of bottom plate is provided with pre-compaction frock axle, and jump ring and check ring material loading penetrate jump ring and check ring simultaneously through the manipulator with pre-compaction frock axle after targetting in place.

The air inlet rocker arm retainer ring clamp spring press-in mechanism or the exhaust rocker arm retainer ring clamp spring press-in mechanism comprises a base, a press-in cylinder and a pressure head, wherein a guide rail is arranged on the base, the press-in cylinder is arranged on the base, the pressure head is arranged on the guide rail of the base and connected with the press-in cylinder, and the front end of the pressure head is provided with a butt joint interface of a prepressing tool shaft.

The invention realizes the functions of simultaneously and automatically feeding the clamp spring and the retainer ring, and penetrating the clamp spring and the retainer ring once and tensioning the clamp spring, realizes the one-time assembly of the roller, the rolling pin and the rocker arm, realizes the simultaneous assembly of the air inlet rocker arm and the air outlet rocker arm into the rocker arm shaft, and automatically installs the clamp spring and the retainer ring at two ends, and has high assembly efficiency and high precision. The installation space is reduced, and the feeding efficiency, the assembly efficiency and the assembly precision are improved.

The invention can detect the screw tightening torque, the pushing force and displacement after riveting the roller shaft and the assembling pressure value of the left exhaust rocker arm in the rocker arm assembling process and store the detected data, thereby being beneficial to follow-up quality tracking, fault problem troubleshooting and processing quality improvement of the rocker arm.

Drawings

Fig. 1 is a schematic view of an overall and exploded structure of a valve rocker arm of a conventional automobile engine.

FIG. 2 is a schematic diagram of the overall structure of the fully automatic assembly line of the engine valve rocker of the present invention.

Fig. 3 is a schematic structural view of the rocker arm positioning seat.

Fig. 4 is a schematic structural diagram of the nut feeding mechanism in the invention.

Fig. 5 is a schematic structural view of the nut feeding mechanism in the invention.

Fig. 6 is a schematic structural view of the screw automatic feeding mechanism of the present invention.

Fig. 7 is a schematic structural view of a screw guide in the screw automatic feeding mechanism.

Fig. 8 is a schematic structural view of the rocker arm positioning mechanism of the present invention.

Fig. 9 is a schematic view of the structure of the tightening mechanism of the present invention.

Fig. 10 is a structural schematic diagram of the roller pin butt-joint loading mechanism in the invention.

Fig. 11 is a schematic structural view of the roll pin receiving and positioning mechanism and the roll pin press-fitting mechanism in the invention.

Fig. 12 is a schematic structural view of a roller positioning pushing mechanism in the present invention.

Fig. 13 is a schematic structural view of the roller receiving mechanism of the invention.

Figure 14 is a schematic view of the arrangement of the rocker arm assembly system of the present invention.

Fig. 15 is a schematic structural view of the rocker shaft positioning seat of the invention.

Fig. 16 is a schematic structural diagram of an intake rocker arm position defining fixture and an exhaust rocker arm position defining fixture in the present invention.

Fig. 17 is a schematic structural diagram of an intake rocker arm assembly docking mechanism and an exhaust rocker arm assembly docking mechanism in the present invention.

Fig. 18 is a schematic structural view of a rocker shaft jacking mechanism in the present invention.

FIG. 19 is a schematic structural diagram of an intake rocker arm retainer ring clamp spring feeding mechanism and an exhaust rocker arm retainer ring clamp spring feeding mechanism in the invention.

Fig. 20 is a cross-sectional view of fig. 19.

Fig. 21 is a schematic structural view of an exhaust rocker arm retainer ring snap spring press-in mechanism and an intake rocker arm retainer ring snap spring press-in mechanism in the present invention.

In the figure: 01. the engine comprises a left clamp spring, 02, a left retainer ring, 03, an intake rocker arm, 04, a rocker arm shaft, 05, a rocker arm shaft seat, 06, an exhaust rocker arm, 07, a right retainer ring, 08, a right clamp spring, 09, an adjusting screw, 010, a locknut, 011, a rolling pin and 012, and a roller;

1. an air inlet rocker arm feeding system, 2 an air outlet rocker arm feeding system, 3 a rocker arm feeding robot, 4 an air outlet rocker arm repair workpiece storage trough, 5 an air inlet rocker arm repair workpiece storage trough, 6 an air inlet rocker arm nut feeding mechanism, 7 an air outlet rocker arm nut feeding mechanism, 8 an air outlet rocker arm screw feeding mechanism, 9 an air inlet rocker arm screw feeding mechanism, 10 an air inlet rocker arm nut guiding mechanism, 11 an air inlet rocker arm tightening machine, 12 an air outlet rocker arm tightening machine, 13 an air outlet rocker arm nut guiding mechanism, 14 an air outlet rocker arm roller feeding mechanism, 15 an air outlet rocker arm roller feeding mechanism, 16 an air outlet rocker arm roller pin pressing mechanism, 17 an air outlet rocker arm roller pin butt joint loading mechanism, 18 an air outlet rocker arm riveting machine, 19 an air outlet rocker arm pushing force detection mechanism, 20 an air outlet rocker arm carrying manipulator, 21 an air inlet rocker arm roller feeding mechanism, 22, an air inlet rocker arm roller pin feeding mechanism, 23, an air inlet rocker arm roller pin pressing-in mechanism, 24, an air inlet rocker arm roller pin butt joint feeding mechanism, 25, an air inlet rocker arm riveting machine, 26, an air inlet rocker arm push-out force detection mechanism, 27, an air inlet rocker arm carrying manipulator, 28, a clamp spring feeding conveying line, 29, a retainer ring feeding conveying line, 30, an accessory feeding robot, 31, an exhaust rocker arm robot, 32, an exhaust rocker arm assembly butt joint mechanism, 33, an exhaust rocker arm returning groove, 34, an exhaust rocker arm clamp spring retainer ring butt joint pressing-in mechanism, 35, a rocker arm shaft circulating conveying line, 36, a tray, 37, an air inlet rocker arm robot, 38, an air inlet rocker arm assembly butt joint mechanism, 39, an air inlet rocker arm clamp spring clamp ring butt joint pressing-in mechanism, 40, an air inlet rocker arm returning groove, 41, an air inlet rocker arm conveying line, 42, an exhaust conveying line rocker arm, 43, an air inlet rocker arm clamping spring feeding frame, 44. the device comprises an air inlet rocker arm retainer ring feeding frame, 45 an air outlet rocker arm retainer ring feeding frame, 46 an air outlet rocker arm clamp spring feeding frame, 47 a rocker arm shaft positioning seat, 48 a rocker arm shaft pressing limiting mechanism, 49 a rocker arm shaft jacking mechanism, 50 an air inlet rocker arm retainer ring clamp spring feeding mechanism and 51 an air outlet rocker arm retainer ring clamp spring feeding mechanism.

601. Nut shale shaker, 602, nut conveyer pipe.

901. The device comprises a screw vibrating screen, 902, a screw conveying pipe, 903, a screw guide device, 904, a support, 905, a tool seat, 906, a screw inlet, 907, a screw outlet and 908, a pre-pressing air cylinder.

1001. The nut positioning device comprises a nut pushing cylinder, 1002, a guide rail, 1003, a nut positioning seat, 1004, a base, 1005, a nut positioning cylinder and 1006, and a limiting block.

1101. A rocker arm positioning cylinder 1102, a limiting central shaft 1103, an angular positioning pin 1104, a positioning seat 1105, a pin hole guiding cylinder 1106 and a moving seat; 1107. the device comprises a connecting frame, 1108, a lifting seat, 1109, a lifting cylinder, 1110, a motor, 1111, a batch head, 1112, a tightening shaft;

2301. the press mounting frame comprises a press mounting frame, 2302, a rolling pin press-in cylinder, 2303, a rolling pin pressure lever, 2304 and a guide seat;

2401. a roller positioning pushing mechanism 2402, a roller receiving positioning mechanism 2403, a roller receiving mechanism 2404 and a rocker arm positioning mechanism;

240101. the device comprises a material pushing cylinder 240102, a roller horizontal pushing block 240103, a roller pressing cylinder 240104, a roller pressing block 240105, a pushing seat 240106 and a roller feeding groove.

240201. And a rolling pin positioning seat 240202. A rolling pin center positioning guide seat.

240301. The roller material receiving jacking cylinder, 240302, the material receiving block, 240303, the roller height limiting cylinder, 240304, the limiting block, 240305 and the material receiving frame;

3801. a base, 3802, a pressing cylinder and 3803, a pressure head;

3901. the base 3902 press-in cylinder 3903 pressure head 3904 guide rail 3905 docking interface.

4901. A mounting seat, 4902, a jacking cylinder, 4903, a jacking seat, 4904, a guide rod;

5001. the device comprises a material column supporting frame, 5002, a clamp spring feeding column, 5003, a retainer ring feeding column, 5004, a clamp spring feeding pressing block, 5005, a retainer ring feeding pressing block, 5006, a clamp spring, 5007, a retainer ring, 5008, a retainer ring feeding air cylinder, 5009, a retainer ring feeding pushing plate, 5010, a clamp spring feeding pushing plate, 5011, a clamp spring feeding air cylinder, 5012, a pre-pressing tooling shaft, 5013, an in-place detection switch, 5014, a pre-pressing tooling shaft detection switch, 5015, a conical pin, 5016, a bottom plate, 5017, a pressing plate and 5018, and a partition plate.

Detailed Description

The fully automatic assembly process of the engine rocker arm is as follows.

1. Rocker arm feeding:

(1) the positioning tray is placed on the sliding table through the sliding table feeding, the air inlet rocker arm is fed to the positioning tray of the air inlet rocker arm sliding table, and the exhaust rocker arm is fed to the positioning tray of the exhaust rocker arm sliding table; and a workpiece existence detection mechanism is arranged on the positioning tray.

The air inlet rocker arm sliding table and the exhaust rocker arm sliding table are both provided with two parallel devices, and each sliding table is provided with one positioning tray, so that continuous feeding without shutdown is realized.

after the rocker arm assembly in the positioning tray on one sliding table is fed, the sliding table automatically returns, and the other sliding table enters a grabbing position.

2. Installing an adjusting screw and loosening a nut:

(2) the adjusting screw and the locknut are arranged by the vibrating screen, and after the materials are arranged, the adjusting screw and the locknut are conveyed, guided and positioned one by one, so that the adjusting screw 09, the rocker arm 03 and the locknut 010 are sequentially arranged from top to bottom, and the axes of the adjusting screw 09, the screw hole of the rocker arm 03 and the locknut 010 are consistent;

3. mounting the roller and the roller pin:

(2) the roller and the rolling pin are both sorted by a vibrating screen, and are conveyed in place one by one after being sorted, so that the central axes of the roller, the rolling pin and the rocker arm rolling pin hole are consistent;

(3) pressing a rolling pin into the rocker arm and the roller at the same time;

4. rocker arm roller pin riveting

5. rocker arm roll pin riveting detection

(1) Respectively detecting applied pressure and displacement variable quantity through a pressure sensor and a displacement sensor, and storing the detected pressure and displacement values (the stored data can be inquired according to date and shift);

(2) whether the riveting of the rolling pin is qualified or not is judged by detecting the displacement change of the rolling pin through applying 7KN pressure to the two sides of the rolling pin after riveting respectively: grabbing the detected qualified workpieces to a position where the rocker arm is arranged in the rocker arm shaft by the robot, and grabbing the detected unqualified workpieces to a workpiece repair area by the robot;

the specific detection process is as follows:

after the rocker arm is arranged in the detection tool, the upper limiting device limits the workpiece;

the left pressing air cylinder applies pressure, when the pressure reaches 7KN, the variable quantity of the displacement sensor is collected, and the pressing air cylinder with the displacement smaller than 0.2mm returns to the original position;

applying pressure by a right press-fitting cylinder, collecting the variation of a displacement sensor when the pressure reaches 7KN, returning the press-fitting cylinder with the displacement of less than 0.2mm to the original position, collecting the variation of the displacement sensor when the pressure reaches 7KN, and if the displacement is more than 0.2mm, riveting the rocker arm roll pin of the workpiece to be unqualified;

6. rocker arm shaft with rocker arm installed

(1) The rocker shaft 04 and the rocker shaft seat 05 are respectively fed by a robot, the rocker shaft seat 05 is firstly arranged in the rocker shaft positioning seat 47, the rocker shaft 04 is then arranged on the rocker shaft seat 05, and the rocker shaft seat 05 and the rocker shaft positioning seat 47 are connected by a positioning pin;

(2) the exhaust rocker arm 03 and the intake rocker arm 06 are respectively placed on two sides of the rocker shaft 04, and the exhaust rocker arm 03 and the intake rocker arm 06 are simultaneously pushed into the rocker shaft;

(3) and (4) detecting the rocker arm in-place and detecting the direction of the rocker arm in a positive and negative way, and after detecting that the rocker arm is pushed in place, the rocker arm shaft positioning seat 47 conveys the workpiece to the next station.

7. Retainer ring and clamp spring press-fitting

The production line for realizing the full-automatic assembly process of the engine valve rocker arm comprises a rocker arm feeding system, a rocker arm assembly sub-packaging system and a rocker arm sub-packaging system which are sequentially arranged as shown in figure 2. The rocker arm feeding system comprises an air inlet rocker arm feeding system 1 and an exhaust rocker arm feeding system 2 which are arranged in front and back, and the structure composition of the air inlet rocker arm feeding system 1 is the same as that of the exhaust rocker arm feeding system 2. The rocker arm assembly subpackaging system comprises an air inlet rocker arm assembly subpackaging system and an air exhaust rocker arm assembly subpackaging system which are arranged in a front-back mode, and the air inlet rocker arm assembly subpackaging system and the air exhaust rocker arm assembly subpackaging system are identical in structural composition. A rocker arm feeding robot 3 is arranged between the rocker arm feeding system and the rocker arm assembly subpackaging system, and an accessory feeding robot 30 is arranged between the rocker arm assembly subpackaging system and the rocker arm assembling system. The rocker arm feeding robot 3 and the rocker arm combining and carrying manipulator 30 both adopt the existing universal manipulator. The rocker arm feeding robot 3 is arranged in the middle of the air inlet rocker arm feeding system 1, the exhaust rocker arm feeding system 2, the air inlet rocker arm assembly subpackaging system and the exhaust rocker arm assembly subpackaging system. Still can set up between intake rocker arm feed mechanism 1 and the exhaust rocker arm subassembly partial shipment system and return work piece storage silo 5, still can set up exhaust rocker arm between exhaust rocker arm feed mechanism 2 and the exhaust rocker arm subassembly partial shipment system and return work piece storage silo 4. And the air inlet rocker arm feeding mechanism 1, the exhaust rocker arm feeding mechanism 2, the air inlet rocker arm repair workpiece storage trough 5, the exhaust rocker arm repair workpiece storage trough 4, the air inlet rocker arm assembly subpackaging system and the exhaust rocker arm assembly subpackaging system are all in the arm reach range of the rocker arm carrying robot 3. The production line further comprises an unqualified workpiece storage trough which comprises an exhaust rocker arm work returning trough 33 and an air inlet rocker arm work returning trough 40.

In the whole assembly process, the air inlet rocker arm 03 or the air outlet rocker arm 06 is placed and positioned on a positioning tray, the structure of the positioning tray is shown in fig. 3, a rocker arm positioning groove is arranged in the positioning tray, and a jackscrew is arranged on the side face of the positioning groove. The rocker arm is placed in the positioning groove, flanges are arranged on two sides of the rocker arm for limiting, and the angular position of the rocker arm can be finely adjusted through screwing a jackscrew into the positioning groove. The rocker arm runs on a conveying mechanism (a sliding table or a conveying line) along with the positioning tray, and is conveyed to the positioning tray of the next procedure through a robot when reaching an assembly station.

The air inlet rocker arm feeding system 1 and the exhaust rocker arm feeding system 2 respectively comprise two sliding tables which are arranged in parallel, each sliding table is provided with a tray, the two sliding tables operate in turn, after rocker arm feeding in the positioning tray on one sliding table is completed, the sliding table automatically returns, and the other sliding table enters a grabbing position to realize continuous feeding without stopping. The rocker arm is manually placed on the positioning tray of the sliding table. The rocker arm feeding robot 3 automatically grips the rocker arms conveyed by the sliding table according to a set program, automatically memorizes the positions and the directions of the rocker arms in the positioning tray, and places the rocker arms on the positioning tray on the air inlet rocker arm conveying line 41 or the exhaust rocker arm conveying line 42. And the inlet rocker arm feeding mechanism 1 and the exhaust rocker arm feeding mechanism 2 circularly feed the inlet rocker arm 03 and the exhaust rocker arm 06. And when no rocker arm is arranged in the feeding tray on the sliding table, the material shortage alarm is carried out, and when the rocker arm is not in place, the alarm can be also carried out.

The intake rocker arm assembly racking system is described in detail below.

The sub-packaging system for the air inlet rocker arm assembly comprises an air inlet rocker arm conveying line 41, an air inlet rocker arm screw and nut loading device and an air inlet rocker arm roller assembling device. The intake rocker arm conveyor line 41 adopts the prior art, such as a belt conveyor, a roller conveyor and the like. The air inlet rocker arm conveying line 41 conveys the air inlet rocker arm to a station where an air inlet rocker arm screw and nut loading device is located to load screws and nuts, and then conveys the air inlet rocker arm to a station where an air inlet rocker arm roller assembly device is located to perform roller assembly.

The intake rocker arm screw nut loading device, as shown in fig. 4, includes an intake rocker arm nut feeding mechanism 6, an intake rocker arm screw feeding mechanism 9, an intake rocker arm nut guide mechanism 10, a screw guide 903 (see fig. 6), and a tightening machine 11. The air inlet rocker arm nut feeding mechanism 6 and the air inlet rocker arm screw feeding mechanism 9 are arranged on the outer side of the tightening machine 11, and the air inlet rocker arm nut feeding mechanism 6 is connected with an air inlet rocker arm nut guiding mechanism 10. The screw feeding mechanism 9 is used for feeding screws, the nut feeding mechanism 6 is used for feeding nuts, the screws and the nuts are respectively guided to a screw and nut loading position through the screw guide device 903 and the nut guide mechanism 10, and the tightening machine 11 tightens the nuts and the screws together on the intake rocker arm 03 to a required position.

The intake rocker arm 03 runs to a rocker arm positioning mechanism in the tightening machine 11 along with the intake rocker arm conveying line 41, the intake rocker arm 03 is positioned by the rocker arm positioning mechanism, and then screws and nuts are installed.

The nut feeding mechanism 6 is used for realizing full-automatic one-by-one feeding of the locknuts and ensuring that the postures and the angles of the locknuts are fixed in the tightening process. The nut feeding mechanism 6 and the nut guide mechanism 10 are structured as shown in fig. 5, the nut feeding mechanism 6 includes a nut vibrating screen 601 and a nut conveying pipe 602, and the nut guide mechanism 10 includes a base 1004, a nut pushing cylinder 1001, a nut positioning seat 1003 and a nut positioning cylinder 1005. The nut delivery pipe 602 is connected between the discharge port of the nut shaker 601 and the base 1004. A pushing guide rail 1002 is arranged on the base 1004, a nut pushing cylinder 1001 is arranged on the base 1004, and a nut positioning seat 1003 is arranged on the pushing guide rail 1002 and connected with the nut pushing cylinder 1001. The nut positioning cylinder 1005 is vertically installed on the base 1004, and a piston rod of the nut positioning cylinder 1005 is connected with a limiting block 1006. The nut vibrating screen 601 conveys nuts to the nut positioning seat 1003 one by one through the nut conveying pipe 602, the nut positioning cylinder 1005 drives the limiting block 1006 to jack up in advance and then limit the angular position of the loose nut (the nut positioning cylinder 1005 descends in place before the pushing cylinder 1001 pushes), the posture and the angle of the loose nut are guaranteed to be fixed in the screwing process, and the nut pushing cylinder 1001 drives the nut on the nut positioning seat 1003 to move to the position below the rocker screw hole and be located at the position to be screwed.

As shown in fig. 6, the screw feeding mechanism 9 includes a screw vibrating screen 901 and a screw conveying pipe 902, and a discharge port of the screw vibrating screen 901 is connected to a screw guide 903 through the screw conveying pipe 902. As shown in fig. 7, the screw guide 903 is mounted on a bracket 904. The screw guiding device 903 comprises a tool seat 905 and a pre-pressing air cylinder 908, the pre-pressing air cylinder 908 is arranged at the upper end of the tool seat 905, an adjusting screw outlet 907 is arranged at the lower end of the tool seat 905, and an adjusting screw inlet 906 is arranged on the outer side of the tool seat 905 and is located below the pre-pressing air cylinder 908. Adjusting screw vibrating screen 901 conveys adjusting screws to screw guiding device 903 one by one through adjusting screw conveying pipe 902, falls into tool seat 905 from adjusting screw inlet 906, starts pre-pressing cylinder 908, pushes adjusting screws into the upper part of rocker arm screw holes and pre-presses the adjusting screws, and is located at the position to be screwed. The mechanism can ensure that the adjusting screws are fed one by one, and the upper movable cap and the threaded rod of the adjusting screw are always positioned on the same axis in the screwing process through the guiding and prepressing of the screw guiding device 903, and can be smoothly screwed into the automobile rocker arm.

The tightening machine 11 includes a rocker arm positioning mechanism and a tightening mechanism, and the rocker arm positioning mechanism is connected to the tightening mechanism. The rocker arm positioning mechanism is shown in fig. 8 and comprises a positioning seat 1104, a rocker arm positioning cylinder 1101, a limiting central shaft 1102, an angular positioning pin 1103 and a pin hole guide cylinder 1105. The rocker arm positioning cylinder 1101 and the pin hole guide cylinder 1105 are both horizontally arranged on the positioning seat 1104, and the pin hole guide cylinder 1105 is controlled by a three-position five-way middle relief valve. The limit center shaft 1102 is connected to a piston rod of the rocker arm positioning cylinder 1101 through a movable base 1106, and a guide rod is provided on the movable base 1106. Angular positioning pin 1103 is attached to the piston rod of pin hole guide cylinder 1105. The limiting central shaft 1102 is inserted into a large hole in the middle of the intake rocker arm 03. Angular alignment pin 1103 is adapted to be inserted into the roll pin hole of rocker arm 03. The rocker positioning cylinder 1101 drives the limit central shaft 1102 to penetrate into the rocker 03 and contact and press the side face of the rocker 03. Then, the pin hole guide cylinder 1105 extends out to drive the angular positioning pin 1103 to extend out, and the pin hole guide cylinder passes through the roll pin hole of the rocker arm 03 to realize angular positioning. The position of the rocker arm 03 is ensured by a two-pin one-side positioning method through the limiting central shaft 1102 and the angular positioning pin 1103. The tightening mechanism is shown in fig. 8 and includes a connecting frame 1107, a lifting base 1108, a lifting cylinder 1109, and a tightening tool (electric screwdriver). Connecting frame 1107 is connected in the lower part of positioning seat 1104 in the rocker positioning mechanism, is provided with the lift guide rail on connecting frame 1107, and lift cylinder 1109 installs on connecting frame 1107, and lift seat 1108 installs on the lift guide rail of connecting frame and is connected with lift cylinder 1109, and electric screwdriver installs on lift seat 1108.

The tightening tool adopts a conventional electric screwdriver structure and comprises a motor 1100, wherein a tightening shaft 1112 is installed on the motor 1100, a screwdriver bit 1111 is inserted into an inner hole at the front end of the tightening shaft 1112, and a compression spring is arranged in the inner hole at the front end of the tightening shaft. The bit 1111 can move in the internal hole of the tightening shaft 1112 and compress the spring, and extend under the push of the spring. The lifting cylinder 1109 drives the lifting seat 1108 and the tightening tool (tightening screwdriver bit 1111) to penetrate through the nut 010 and the rocker arm 03 from bottom to top and butt-joint with the bottom of the adjusting screw 09, and controls the tightening tool to rotate within a set torque by a set angle, so that the adjusting screw 09 is driven to be screwed into the rocker arm and then into the locknut 010. The adjusting screw 09, the rocker arm 06, the locknut 010 and the tightening bit 1111 are arranged in sequence from top to bottom, and the central axes are concentric. The bottom of the adjusting screw is of an inner hexagonal structure, the screwdriver head 1111 extends into the bottom of the screw to drive the screw to rotate, the screw is gradually screwed into the rocker arm and the nut, the elastic compression spring is arranged in the tightening shaft 1112, the screwdriver head 1111 is pressed down along with the extension of the screw, the lifting cylinder 403 descends after the screw is tightened in place, and the compression spring resets.

And after screws and nuts are arranged in the air inlet rocker arm, the air inlet rocker arm is conveyed to the air inlet rocker arm roller assembling device through the air inlet rocker arm conveying line 41 to be assembled with a roller at the other end.

The roller assembling device for the air inlet rocker roller comprises an air inlet rocker roller pin butt joint loading mechanism 24, an air inlet rocker carrying manipulator 27 and an air inlet rocker riveting machine 25. The intake rocker arm carrying robot 27 is disposed between the roller pin fitting mechanism 24 and the intake rocker arm riveter 25. As shown in fig. 9, the intake rocker roller pin roll loading mechanism includes an intake rocker roller loading mechanism 21, an intake rocker roller pin loading mechanism 22, a pin roll loading positioning mechanism 2402, a roller positioning pushing mechanism 2401, a roller loading mechanism 2403, a rocker positioning mechanism 2404, and an intake rocker roller pin roll loading mechanism 23. The discharge hole of the intake rocker arm rolling pin feeding mechanism 22 is butted with a rolling pin positioning seat 240201 in a rolling pin receiving positioning mechanism 2402 (see fig. 11). The discharge port of the intake rocker roller feeding mechanism 21 is butted with a roller feeding groove 240106 in the roller positioning pushing mechanism 2401 (see fig. 12). The roller positioning pushing mechanism 2401 and the roller receiving mechanism 2403 are arranged oppositely up and down, the roller pin receiving positioning mechanism 2402 and the rocker arm positioning mechanism 2404 are arranged oppositely front and back, and the air inlet rocker arm roller pin press-in mechanism 23 is arranged at the rear side of the roller pin receiving positioning mechanism 2402. The roller feeding mechanism 21 and the roller feeding mechanism 22 of the air inlet rocker arm convey the rollers and the rollers to the position to be loaded one by one. The roll pin material receiving and positioning mechanism 2402 ensures that the axis of the roll pin before press mounting is horizontal. The roller positioning pushing mechanism 2401 and the roller receiving mechanism 2403 coordinate to move to ensure that the rollers can safely and nondestructively reach positions to be loaded one by one, and the axis position and the center of a rocker arm pin rolling hole are accurately positioned. The accuracy and uniqueness of the position of the automobile rocker arm before assembly are ensured through the rocker arm positioning mechanism 2404 and the rocker arm positioning tray. The central axes of the roller, the rolling pin and the rocker arm are consistent through the mechanism, and finally the rolling pin penetrates into the rocker arm and the roller through the air inlet rocker arm rolling pin pressing mechanism 23.

The air inlet rocker arm roller feeding mechanism 21 and the air inlet rocker arm roller feeding mechanism 22 both adopt vibrating screens, and are in the prior art. The rocker arm positioning mechanism 2404 is identical in structure to the rocker arm positioning mechanism in the tightening machine 11 shown in fig. 7, and will not be described in detail.

The structure of the roller pin material-receiving positioning mechanism 2402 and the intake rocker roller pin press-in mechanism 23 is shown in fig. 11, both are arranged on the press-fitting frame 2301, and the roller pin material-receiving positioning mechanism 2402 is positioned in front of the intake rocker roller pin press-in mechanism 23. The rolling pin material positioning mechanism 2402 comprises a V-shaped rolling pin positioning seat 240201 and a rolling pin central positioning guide seat 240202 which are both arranged on the press mounting frame 2301, and the rolling pin central positioning guide seat 240202 is arranged in front of the V-shaped rolling pin positioning seat 240201. The air inlet rocker arm roller pin pressing-in mechanism 23 comprises a press-mounting frame 2301, a roller pin pressing-in cylinder 2302, a roller pin pressing rod 2303 and a guide seat 2304, wherein the roller pin pressing-in cylinder 2302 and the guide seat 2304 are both installed on the press-mounting frame 2301, the guide seat 2304 is arranged in front of the roller pin pressing-in cylinder 2302, and the roller pin pressing rod 2303 is sleeved in the guide seat 2304 and is connected with a piston rod of the roller pin pressing-in cylinder 2302. The roller pin is pressed into the cylinder 2302 to drive the roller pin pressing rod 2303 to pass through the guide seat 2304, the roller pin which is placed on the V-shaped roller pin positioning seat 240201 in advance through the intake rocker arm roller pin feeding mechanism 22 penetrates through the roller pin central positioning guide seat 240202 to be pressed into the intake rocker arm 03, and one-time assembly of the roller, the roller pin and the rocker arm is achieved.

The structure of the roller positioning pushing mechanism 2401 is shown in fig. 12, and includes a pushing seat 240105, a pushing cylinder 240101, a horizontal pushing block 240102, a roller pressing cylinder 240103 and a roller pressing block 240104. The pushing seat 240105 is provided with a roller feeding slot 240106, the pushing cylinder 240101 is horizontally arranged on the pushing seat 240105, the horizontal pushing block 240102 is positioned below the roller feeding slot 240106 and connected with a piston rod of the pushing cylinder 240101, and the horizontal pushing block 240102 is provided with a roller limiting slot. The roller pressing cylinder 240103 is vertically installed on the pushing seat 240105, and the roller pressing block 240104 is located on the front side of the flat pushing block 240102 and is connected with a piston rod of the roller pressing cylinder 240103. The roller 012 is conveyed by the roller feeding mechanism 21, and falls into a roller limiting groove in the flat push block 240102 through a roller feeding groove 240106 on the push seat 240105, when the roller receiving mechanism reaches a receiving position, the push cylinder 240101 advances to drive the roller falling into the roller limiting groove of the roller flat push block 240102 to advance, the roller falls into a V-shaped receiving block 240302 (see fig. 13) in the roller receiving mechanism, and then the roller pressing cylinder 240103 drives the roller pressing block 240104 to press the roller, and presses the roller down until a lower assembling position is waited for assembling.

The structure of the roller receiving mechanism 2403 is as shown in fig. 13, and includes a receiving frame 240305, a roller receiving jacking cylinder 240301, a receiving block 240302, a roller height limiting cylinder 240303 and a limiting block 240304, wherein the roller receiving jacking cylinder 240301 is vertically installed on the receiving frame 240305, the receiving block 240302 is connected to a piston rod of the roller receiving jacking cylinder 240301, the roller height limiting cylinder 240303 is horizontally installed on the receiving frame 240305, and the limiting block 240304 is connected to a piston rod of the roller height limiting cylinder 240303. The roller material receiving jacking cylinder 240301 drives the V-shaped material receiving block 240302 to ascend to the maximum stroke of the cylinder, the roller height limiting cylinder 240303 drives the limiting block 240304 to advance and extend below the V-shaped material receiving block 240302, the roller material receiving jacking cylinder 240301 drives the material receiving block 240302 to descend, and material receiving and limiting of the roller are completed after the material receiving block 240302 is in contact with the limiting block 240304.

When the intake rocker arm 03 reaches the position of the rocker arm positioning mechanism 2404, the intake rocker arm 03 is positioned by the rocker arm positioning mechanism 2404 (the same as the rocker arm positioning mechanism in the tightening machine 11)) (see the description of the rocker arm positioning mechanism in the tightening machine 11 above for details). An angular positioning pin 1103 (see fig. 7) of the rocker arm positioning mechanism 2404 firstly penetrates through the rocker arm and the roller and then is matched with the roller pin central positioning guide seat 240202, so that the central axes of the roller, the roller pin and the intake rocker arm in the assembling process are consistent, the roller pin penetrates through the roller pin central positioning guide seat 240202 and then penetrates through the intake rocker arm and the rocker arm roller by the roller pin pressing mechanism 23, and meanwhile, the angular positioning pin 1103 of the rocker arm positioning mechanism 2404 is pressed out. The angular positioning pin 1103 moves backward along with the press-in of the roll pin in the press-in process of the roll pin, so that continuous guiding in the press-fitting process is realized.

The intake rocker arm carrying manipulator 27 carries the intake rocker arm and the positioning tray thereof, which penetrate the roller and the roller pin, to the intake rocker arm riveting machine 25 for riveting the roller pin, and after riveting is completed, the intake rocker arm carrying manipulator 27 carries the intake rocker arm pushing force detection mechanism 26 for detection. The intake rocker arm push-out force detection mechanism 26 includes left side pressure equipment cylinder and right side pressure equipment cylinder that exert thrust to rolling round pin both sides, through applying 7 KN's pressure respectively to the rolling round pin both sides after the riveting, detects through pressure sensor and exerts pressure, detects through displacement sensor and rolls the displacement change of round pin to whether it is qualified to change the judgement roll pin riveting with the displacement: and grabbing the qualified workpieces to a position where the rocker arm is arranged in the rocker shaft by the robot, and grabbing the unqualified workpieces to a workpiece repairing area by the robot. The exhaust rocker arm that fails in the detection of the pushing-out force is placed in the exhaust rocker arm rework groove 33 by the exhaust rocker arm robot 31. The intake rocker arm that fails in the detection of the pushing-out force is placed in the intake rocker arm rework groove 40 by the intake rocker arm robot 37.

Correspondingly, the exhaust rocker arm assembly subpackaging system comprises an exhaust rocker arm conveying line 42, an exhaust rocker arm screw and nut installing device and an exhaust rocker arm roller assembling device. The exhaust rocker arm screw and nut loading device comprises an exhaust rocker arm nut feeding mechanism 7, an exhaust rocker arm screw feeding mechanism 8, an exhaust rocker arm nut guide mechanism 13, an exhaust rocker arm screw guide mechanism and an exhaust rocker arm tightening machine 12. The structures and the functions of the parts are completely the same as those of the parts corresponding to the split charging system of the air inlet rocker arm assembly, and the detailed description is omitted.

The exhaust rocker roller assembly device comprises an exhaust rocker roller feeding mechanism 15, an exhaust rocker roller shaft feeding mechanism 14, an exhaust rocker roller butt joint loading mechanism 17, an exhaust rocker roller pin pressing mechanism 16, an exhaust rocker carrying manipulator 20, an exhaust rocker riveting machine 18 and an exhaust rocker pushing force detection mechanism 19. The structures and the functions of the parts are completely the same as those of the parts corresponding to the roller assembling device of the roller of the air inlet rocker arm, and the description is omitted.

The air inlet rocker arm assembly and the exhaust rocker arm assembly which are assembled qualified are conveyed to a rocker arm assembling system by an air inlet rocker arm robot and are assembled on a rocker arm shaft at the same time.

The rocker arm attaching system will be described in detail below.

The structure of the rocker arm assembling system is shown in figure 14, and the rocker arm assembling system comprises a rocker arm circulating conveying line 35, wherein a rocker arm pressing-in station and a retainer ring clamp spring assembling station are arranged on the rocker arm circulating conveying line 35. The rocker arm circulating conveying line 35 adopts a circulating conveying line with an existing structure, and circulating feeding in the rocker arm assembling process is achieved. And an air inlet rocker arm robot 37 and an exhaust rocker arm robot 31 are respectively arranged on two sides of the rocker shaft circulating conveying line 35 and used for grabbing an air inlet rocker arm assembly and an exhaust rocker arm assembly. And a rocker shaft positioning seat 47 is arranged on the rocker arm circulating conveying line 35. The structure of the rocker shaft positioning seat 47 is shown in fig. 15. The rocker shaft 04 and the rocker shaft seat 05 are respectively fed by a robot, the rocker base 05 is arranged on the rocker shaft positioning seat 47 by the air inlet rocker arm robot 37, the rocker shaft 04 is arranged on the rocker base 05 by the air outlet rocker arm robot 31, and the rocker shaft seat 05 and the rocker shaft positioning seat 47 are connected by a positioning pin. The rocker shaft positioning seat 47 is arranged on the rocker arm circulating conveying line 35 and runs along with the rocker arm circulating conveying line 35.

And an air inlet rocker arm assembling and butting mechanism 38, an exhaust rocker arm assembling and butting mechanism 32, a rocker shaft jacking mechanism 49 and a rocker shaft pressing limiting mechanism 48 are arranged at the rocker arm pressing station, and the air inlet rocker arm assembling and butting mechanism 38 and the exhaust rocker arm assembling and butting mechanism 32 are oppositely arranged at the inner side and the outer side of the rocker shaft circulating conveying line 35. An intake rocker position limiting tool is arranged at the front part of the intake rocker assembly docking mechanism 38, an exhaust rocker position limiting tool is arranged at the front part of the exhaust rocker assembly docking mechanism 32, the intake rocker position limiting tool and the exhaust rocker position limiting tool are of the same structure, and as shown in fig. 16, the front end of a base 3801 of the intake rocker assembly docking mechanism 38 is used for placing and positioning an intake rocker or an exhaust rocker. The rocker shaft jacking mechanism 49 is arranged in the rocker arm circulation conveying line 35 between the intake rocker arm assembly docking mechanism 38 and the exhaust rocker arm assembly docking mechanism 32. The rocker shaft pressing and limiting mechanism 48 is of a frame structure and is arranged on a support of the rocker shaft circulating conveying line 35, and when the rocker shaft jacking mechanism 49 jacks up the rocker shaft, the lifting height of the rocker shaft is limited, so that the axial line of the rocker shaft is equal to the axial lines of the installation holes of the intake rocker arm and the exhaust rocker arm.

The intake rocker arm assembly docking mechanism 38 and the exhaust rocker arm assembly docking mechanism 32 have the same structure, as shown in fig. 17, and include a base 3801, a press-in cylinder 3802, and a press head 3803, where the base 3801 is provided with a guide rail, the press-in cylinder 3802 is installed on the base 3801, and the press head 3803 is installed on the guide rail of the base 3801 and connected to a piston rod of the press-in cylinder 3802. The press-in cylinder 3802 drives the pressing head 3803 to move along the guide rail, and presses the intake rocker arm 03 or the exhaust rocker arm 06 on the intake rocker arm position limiting tool into the rocker shaft 04.

The structure of the rocker shaft jacking mechanism 49 is shown in fig. 18, and comprises a mounting seat 4901, a jacking cylinder 4902 and a jacking seat 4903. The mounting seat 4901 is connected with a bracket of the rocker arm circulating conveying line 35. The jacking cylinder 4902 is vertically installed on the installation seat 4901, a piston rod of the jacking cylinder 4902 is connected with a jacking seat 4903, and a guide rod 4904 is arranged on the jacking seat 4903. When the rocker shaft 04 runs above the jacking seat 4903 along with the rocker circulating conveying line 35 on the rocker shaft positioning seat 47, the jacking cylinder 4902 is started, the rocker shaft positioning seat 47 and the rocker shaft 04 are simultaneously lifted through the jacking seat 4903, and the rocker shaft is pressed by the rocker shaft pressing and limiting mechanism 48 for limiting.

After the rocker shaft jacking mechanism 49 jacks up the rocker shaft 04, the intake rocker arm 03 and the exhaust rocker arm 06 are respectively pressed into two ends of the rocker shaft 04 through the intake rocker arm assembly docking mechanism 38 and the exhaust rocker arm assembly docking mechanism 32. The rocker shaft jacking mechanism 49 returns, and the rocker shaft 04 with the air inlet rocker arm 03 and the exhaust rocker arm 06 falls on the rocker shaft circulating conveying line 35 along with the rocker shaft positioning seat 47 and then is conveyed to the retainer ring clamp spring assembling station.

And an air inlet rocker arm retainer ring clamp spring feeding mechanism 50, an exhaust rocker arm retainer ring clamp spring feeding mechanism 51, an air inlet rocker arm retainer ring clamp spring press-in mechanism 39 and an exhaust rocker arm retainer ring clamp spring press-in mechanism 34 are arranged at the retainer ring clamp spring assembling station. The exhaust rocker arm retaining ring clamp spring press-in mechanism 34 and the intake rocker arm retaining ring clamp spring press-in mechanism 39 are respectively arranged on the inner side and the outer side of the rocker arm circulating conveying line 35. The intake rocker arm retainer ring clamp spring feeding mechanism 50 is arranged above the intake rocker arm retainer ring clamp spring press-in mechanism 39, and the exhaust rocker arm retainer ring clamp spring feeding mechanism 51 is arranged above the exhaust rocker arm retainer ring clamp spring press-in mechanism 34. The front parts of the exhaust rocker arm retaining ring clamp spring press-in mechanism 34 and the intake rocker arm retaining ring clamp spring press-in mechanism 39 are both provided with a butt joint interface 3905 (see fig. 21) of the pre-pressing tool shaft 5012. And an air inlet rocker arm clamp spring feeding frame 43 and an air inlet rocker arm retainer ring feeding frame 44 are arranged on one side of the air inlet rocker arm clamp spring retainer ring pressing-in mechanism 39. And an exhaust rocker arm retaining ring feeding frame 45 and an exhaust rocker arm retaining ring feeding frame 46 are arranged on one side of the exhaust rocker arm retaining ring pressing-in mechanism 34.

The structures of the intake rocker arm retainer ring clamp spring feeding mechanism 50 and the exhaust rocker arm retainer ring clamp spring feeding mechanism 51 are the same, and as shown in fig. 19 and 20, the intake rocker arm retainer ring clamp spring feeding mechanism comprises a bottom plate 5016, a material column support frame 5001, a clamp spring feeding column 5002, a retainer ring feeding column 5003, a retainer ring feeding cylinder 5008, a retainer ring feeding push plate 5009, a clamp spring feeding push plate 5010 and a clamp spring feeding cylinder 5011. Vertical the installing on bottom plate 5016 of material column support frame 5001, the quick replacement stop gear of jump ring feeding column 5002 and retaining ring feeding column 5003 is installed on the upper portion of material column support frame 5001, makes things convenient for quick getting of jump ring feeding column 5002 and retaining ring feeding column 5003 to put. The quick-change limiting mechanism is provided with two mounting taper pins 5015, and correspondingly positioning holes corresponding to the taper pins 5015 are formed in the clamp spring feeding column 5002 or the retainer ring feeding column 5003. During installation, the clamp spring feeding column 5002 or the check ring feeding column 5003 is aligned to the approximate direction of the positioning pin 5015, and the clamp spring feeding column or the check ring feeding column is pressed downwards to be quickly installed and positioned. The clamp spring feeding column 5002 or the retainer ring feeding column 5003 can be quickly drawn out by lifting the clamp spring feeding column or the retainer ring upwards to add the clamp spring or the retainer ring. The clamp spring feeding column 5002 is cylindrical, the outer diameter of the clamp spring feeding column is slightly larger than the inner diameter of the clamp spring, a stop block is arranged at one end of the clamp spring feeding column 5002, and the clamp spring feeding column 5002 is arranged in a quick-replacement limiting mechanism on the upper portion of the material column supporting frame 5001 and hung on the material column supporting frame 5001 through the stop block. The retainer ring feeding column 5003 has the same structure as the clamp spring feeding column 5002, has an outer diameter slightly larger than the inner diameter of the retainer ring, and is suspended in another quick-change limiting mechanism on the upper portion of the material column support frame 5001. The clamp spring feeding column 5002 is provided with a clamp spring feeding block 5004, the clamp spring feeding block 5004 is used for pressing the clamp spring 5006, and the clamp spring 5006 is guaranteed to fall one by one for feeding through gravity. Similarly, a retainer ring feeding block 5005 is arranged on the retainer ring feeding column 5003, the retainer ring feeding block 5005 is used for pressing on the retainer ring 5007, and the retainer rings 5007 are ensured to fall one by one for feeding through gravity.

As shown in fig. 20, a material partition plate 5018 and a pressure plate 5017 are sequentially disposed above the base plate 5016, and a two-layer space is formed between the base plate 5016, the material partition plate 5018, and the pressure plate 5017. Baffle ring material loading push pedal 5009 sets up in the space between material partition plate 5016 and clamp plate 5017 to be connected with baffle ring material loading cylinder 5008, baffle ring material loading cylinder 5008 drives baffle ring material loading push pedal 5009 reciprocating motion, thereby realizes the autoloading of baffle ring 5007. The clamp spring feeding push plate 5010 is arranged in a space between the bottom plate 5016 and the material separating plate 5018 and is connected with a clamp spring feeding cylinder 5011, and the clamp spring feeding cylinder 5011 drives the clamp spring feeding push plate 5010 to reciprocate, so that automatic feeding of the clamp springs 5006 is realized. Retainer ring feeding cylinder 5008 and clamp spring feeding cylinder 5011 are both installed on one side of bottom plate 5016. The distance between the bottom end of the clamp spring feeding column 5002 and the upper surface of the bottom plate 5016 is slightly larger than the thickness of the clamp spring, and the distance between the bottom end of the retainer ring feeding column 5003 and the upper surface of the bottom plate 5016 of the material separation plate 5018 is slightly larger than the thickness of the retainer ring. The other side of the bottom plate 5016 is provided with a prepressing tool shaft 5012, and the periphery of the prepressing tool shaft 5012 is provided with an in-place detection switch 5013 and a prepressing tool shaft detection switch 5014 which are installed on the bottom plate 5016. The pre-pressing tool shaft detection switch 5014 is used for detecting whether the pre-pressing tool shaft 5012 is in place or not, and the in-place detection switch 5013 detects whether the clamp spring 5006 and the check ring 5007 feed in place or not. After the clamp spring 5006 and the check ring 5007 are fed in place, the pre-pressing tool shaft 5012 penetrates into the clamp spring 5006 and the check ring 5007 simultaneously through the manipulator.

The working process of the retainer ring clamp spring feeding mechanism 50 is as follows.

The clamp spring is conveyed through a clamp spring feeding conveying line 28, the check ring is conveyed through a check ring feeding conveying line 29, and the clamp spring are arranged on a tray 36 on a rocker shaft circulating conveying line 35 through a rocker arm assembling and conveying manipulator 30 and conveyed to a material penetrating station. A snap spring feeding press block 5004 and a check ring feeding press block 5005 are respectively sleeved on the snap spring feeding column 5002 and the check ring feeding column 5003 manually. The snap springs 5006 are sleeved on the snap spring feeding columns 5002 one by one, and the retainer rings 5007 are sleeved on the retainer ring feeding columns 5003 one by one. Then, the clamp spring feeding column 5002 and the retainer ring feeding column 5003 are hung upside down on the air inlet rocker arm clamp spring feeding frame 43 and the air inlet rocker arm retainer ring feeding frame 44, the clamp spring feeding column 5002 and the retainer ring feeding column 5003 are grabbed through the air inlet rocker arm robot 37, and the clamp spring feeding column 5002 and the retainer ring feeding column are hung upside down on the material column supporting frame 5001. The lowermost retainer ring 5007 lands on the material partition plate 5018, and the lowermost clamp spring 5006 lands on the bottom plate 5016. The retainer ring feeding cylinder 5008 and the clamp spring feeding cylinder 5011 are started, so that the retainer ring feeding push plate 5009 and the clamp spring feeding push plate 5010 push the clamp spring 5006 and the retainer ring 5007 to move towards the position of the pre-pressing tool shaft 5012, the clamp spring 5006 and the retainer ring 5007 are in a coaxial state after being in place, and automatic feeding is achieved. The clamp spring feeding press block 5004 and the retainer ring feeding press block 5005 ensure that the clamp spring 5006 and the retainer ring 5007 fall one by one for feeding through the gravity action. After the clamp spring 5006 and the check ring 5007 are fed in place, the in-place detection switch 5013 is used for judging whether the clamp spring 5006 and the check ring 5007 are fed in place or not. After the clamp spring 5006 and the check ring 5007 are fed in place, the pre-pressing tool shaft 5012 is grabbed through the manipulator, after the pre-pressing tool shaft detection switch 5014 detects that the pre-pressing tool shaft 5012 is in place, the manipulator penetrates the upper portion of the pre-pressing tool shaft 5012 into the clamp spring 5006 and the check ring 5007 simultaneously, presses the pre-pressing tool shaft 5012 in place, and tightly tensions the clamp spring 5006.

Intake rocker arm retaining ring jump ring impressing mechanism 39 and exhaust rocker arm retaining ring jump ring impressing mechanism 34 adopt same structure, as shown in fig. 21, including base 3901, impressing cylinder 3902 and pressure head 3903, are provided with guide rail 3904 on the base 3901, and impressing cylinder 3902 is installed on base 3901, and pressure head 3903 is installed on guide rail 3904 of base 3901 to be connected with the piston rod of impressing cylinder 3902. The front end of indenter 3903 is provided with pre-compaction frock axle 5012's butt joint interface 3905. The pressing-in cylinder 3902 drives the pressure head 3903 to move along the guide rail 3904, the butt joint interface 3905 is aligned with the pre-pressing tool shaft 5012, the pre-pressing tool shaft 5012 enters the butt joint interface 3905, and the clamp spring 5006 and the check ring 5007 on the pre-pressing tool shaft 5012 are pressed into the rocker shaft 04.

At the rocking arm station of impressing, place the rocking arm 03 that admits air on the rocking arm position of admitting air is injectd the frock through admitting air rocking arm robot 37, place the exhaust rocking arm on the rocking arm position of exhausting is injectd the frock through exhaust rocking arm robot 31, guarantees the central point before the rocking arm assembly and puts. The rocker shaft circulating conveying line 35 conveys the rocker shaft to a position between a rocker shaft jacking mechanism 49 and a rocker shaft pressing limiting mechanism 48 through a rocker shaft positioning seat 47. The rocker shaft jacking mechanism 49 jacks up the whole rocker shaft positioning seat 47 and tightly presses the rocker shaft onto the rocker shaft pressing limiting mechanism 48, so that the center position of the rocker shaft before the automobile rocker arm is assembled is accurate and unique. Finally, the intake and exhaust rocker arm

assembly docking mechanisms

38, 32 simultaneously press the intake and exhaust rocker arms onto the rocker shaft. After the rocker arm is assembled on the rocker arm shaft, rocker arm loading in-place detection and rocker arm direction positive and negative detection are carried out, and after the rocker arm is detected to be pushed in-place, the rocker arm shaft is conveyed to a retainer ring clamp spring assembling station through a rocker arm shaft circulating conveying line 35.

At the retainer ring clamp spring assembly station, the intake rocker arm retainer ring clamp spring feeding mechanism 50 finishes automatic feeding of the rocker arm retainer ring clamp spring of the intake rocker arm in advance and penetrates into the prepressing tooling shaft 5012 of the intake rocker arm. Similarly, the exhaust rocker arm retainer ring clamp spring feeding mechanism 51 automatically feeds the rocker arm retainer ring of the exhaust rocker arm in advance, and penetrates into a prepressing tool shaft of the exhaust rocker arm. And the check ring and the clamp spring on the prepressing tool shaft are respectively pressed out by the air inlet rocker arm check ring clamp spring pressing-in mechanism 39 and the exhaust rocker arm check ring clamp spring pressing-in mechanism 34 and assembled on the rocker arm shaft.

And the engine valve rocker is automatically assembled.

Claims

1. A full-automatic assembly process of an engine valve rocker is characterized by comprising the following steps:

(1) Rocker arm feeding:

(2) Installing an adjusting screw and loosening a nut:

(1) conveying the positioning tray and the rocker arm on the positioning tray to the station through a conveying line, and accurately positioning the rocker arm after the positioning tray and the rocker arm are in place;

(3) Mounting the roller and the roller pin:

(3) pressing a rolling pin into the rocker arm and the roller simultaneously;

(4) Riveting a rocker arm roll pin:

(1) the positioning tray and the rocker arm are arranged on the riveting machine to be riveted on the rolling pin;

(5) Riveting and detecting a rocker arm roller pin:

(6) The rocker arm is arranged in the rocker arm shaft:

(1) the rocker shaft and the rocker shaft seat are respectively fed by a robot, the rocker shaft seat is firstly arranged in the rocker shaft positioning seat, then the rocker shaft is arranged on the rocker shaft seat, and the rocker shaft seat and the rocker shaft positioning seat are connected by a positioning pin;

(3) detecting the rocker arm is installed in place and detecting the direction of the rocker arm in a positive and negative direction, and after detecting that the rocker arm is pushed in place, the rocker arm shaft positioning seat conveys the workpiece to the next station;

(7) Pressing a retainer ring and a clamp spring:

(2) the robot grabs the auxiliary tool shaft, penetrates the check ring and the clamp spring on the auxiliary tool shaft, and automatically loads the check ring and the clamp spring at one time through the auxiliary tool shaft;

2. A full-automatic assembly production line for realizing the process of claim 1 is characterized by comprising a rocker arm feeding system, a rocker arm assembly split charging system and a rocker arm assembling system which are sequentially arranged; a rocker arm feeding robot is arranged between the rocker arm feeding system and the rocker arm assembly subpackaging system, and an accessory feeding robot is arranged between the rocker arm assembly subpackaging system and the rocker arm assembling system; the rocker arm feeding system comprises an air inlet rocker arm feeding system and an air outlet rocker arm feeding system which are arranged in parallel; the rocker arm assembly subpackaging system comprises an air inlet rocker arm assembly subpackaging system and an exhaust rocker arm assembly subpackaging system which are arranged in parallel.

3. The full-automatic assembly production line of the engine valve rocker according to claim 2, characterized in that the rocker feeding system or the exhaust rocker feeding system comprises two sliding tables which are arranged in parallel, and each sliding table is provided with a positioning tray for containing the rocker.

4. The full-automatic assembling production line for the engine valve rocker arm according to claim 2, characterized in that the intake rocker arm assembly sub-packaging system or the exhaust rocker arm assembly sub-packaging system comprises a rocker arm conveying line, a positioning tray is arranged on the rocker arm conveying line, a rocker arm screw nut loading station and a rocker arm roller assembly station are arranged along the rocker arm conveying line, and a rocker arm screw nut loading device and a rocker arm roller assembly device are respectively arranged on the rocker arm screw nut loading station and the rocker arm roller assembly station.

5. The full-automatic assembly production line of the engine valve rocker according to claim 4, characterized in that the screw and nut loading device comprises a nut feeding mechanism, a screw feeding mechanism, a nut guiding mechanism, a screw guiding device and a tightening machine; the nut feeding mechanism and the screw feeding mechanism are arranged on the outer side of the tightening machine, the nut feeding mechanism is connected with the nut guide mechanism, and the screw feeding mechanism is connected with the screw guide device.

6. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the nut feeding mechanism comprises a nut vibrating screen and a nut conveying pipe, and the nut conveying pipe is connected between a discharge port of the nut vibrating screen and the nut guiding device.

7. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the nut guide mechanism comprises a base, a nut pushing cylinder, a nut positioning seat and a positioning cylinder, the nut pushing cylinder is horizontally installed on the base, the nut positioning seat is connected with the nut pushing cylinder, the nut positioning cylinder is vertically installed on the base, and the nut positioning cylinder is connected with a limiting block.

8. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the screw feeding mechanism comprises a screw vibrating screen and a screw conveying pipe, and the screw conveying pipe is connected between a discharge port of the screw vibrating screen and a screw guiding device.

9. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the screw guide device comprises a tool seat and a pre-pressing cylinder, the pre-pressing cylinder is arranged at the upper part of the tool seat, the lower end of the tool seat is an adjusting screw outlet, and an adjusting screw inlet is arranged at the outer side of the tool seat and is positioned below the pre-pressing cylinder.

10. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the tightening machine comprises a rocker positioning mechanism and a tightening mechanism, wherein the rocker positioning mechanism is connected to the tightening mechanism; the rocker arm positioning mechanism comprises a positioning seat, a rocker arm positioning cylinder, a limiting central shaft, an angular positioning pin and a pin hole guide cylinder, wherein the rocker arm positioning cylinder and the pin hole guide cylinder are both arranged on the positioning seat; the tightening mechanism comprises a connecting frame, a lifting seat, a lifting cylinder and a tightening tool, the connecting frame is connected to the positioning seat in the rocker arm positioning mechanism, a lifting guide rail is arranged on the connecting frame, the lifting cylinder is installed on the connecting frame, the lifting seat is installed on the lifting guide rail of the connecting frame and connected with the lifting cylinder, and the tightening tool is installed on the lifting seat.

11. The full-automatic assembly production line of the engine valve rocker according to claim 5, characterized in that the tightening tool comprises a motor, a tightening shaft and a bit, the tightening shaft is mounted on the motor, the bit is inserted into an inner hole at the front end of the tightening shaft, and a compression spring is arranged in the inner hole at the front end of the tightening shaft.

12. The full-automatic assembly production line of the engine valve rocker according to claim 4, characterized in that the rocker roller assembly device comprises a roller pin butt joint loading mechanism, a carrying manipulator and a riveting machine, wherein the carrying manipulator is arranged between the roller pin loading mechanism and the riveting machine; the roller pin rolling and loading mechanism comprises a roller feeding mechanism, a roller pin receiving and positioning mechanism, a roller positioning and pushing mechanism, a roller receiving mechanism, a rocker arm positioning mechanism and a roller pin pressing-in mechanism, wherein a discharge port of the roller pin feeding mechanism is in butt joint with the roller pin receiving and positioning mechanism, a discharge port of the roller feeding mechanism is in butt joint with the roller positioning and pushing mechanism, the roller positioning and pushing mechanism and the roller receiving mechanism are arranged up and down relatively, the roller pin receiving and positioning mechanism and the rocker arm positioning mechanism are arranged front and back relatively, and the roller pin pressing-in mechanism is arranged behind the roller pin receiving and positioning mechanism.

13. The full-automatic assembly production line of the engine valve rocker according to claim 12, wherein the rolling pin material positioning mechanism comprises a rolling pin positioning seat and a rolling pin central positioning guide seat, both of which are mounted on a press-mounting frame of the rolling pin press-in mechanism, and the rolling pin central positioning guide seat is arranged in front of the rolling pin positioning seat; the rolling pin pressing-in mechanism comprises a press-mounting frame, a rolling pin pressing-in air cylinder, a rolling pin pressing rod and a guide seat, the rolling pin pressing-in air cylinder and the guide seat are both mounted on the press-mounting frame, the guide seat is arranged in front of the rolling pin pressing-in air cylinder, and the rolling pin pressing rod is sleeved in the guide seat and is connected with the rolling pin pressing-in air cylinder.

14. The full-automatic assembly production line of the engine valve rocker according to claim 12, wherein the roller positioning pushing mechanism comprises a pushing seat, a pushing cylinder, a flat pushing block, a roller pressing cylinder and a roller pressing block, the pushing seat is provided with a roller feeding groove, the pushing cylinder is mounted on the pushing seat, the flat pushing block is located below the roller feeding groove and connected with the pushing cylinder, the flat pushing block is provided with a roller limiting groove, the roller pressing cylinder is mounted on the pushing seat, and the roller pressing block is located on the front side of the flat pushing block and connected with the roller pressing cylinder.

15. The full-automatic assembly line of engine valve rocker according to claim 12, characterized in that, the roller receiving mechanism comprises a receiving frame, a roller receiving jacking cylinder, a receiving block, a roller height limiting cylinder and a limiting block, the roller receiving jacking cylinder is mounted on the receiving frame, the receiving block is connected to the roller receiving jacking cylinder, the roller height limiting cylinder is mounted on the receiving frame, and the limiting block is connected to the roller height limiting cylinder.

16. The full-automatic assembly production line of the engine valve rocker according to claim 2, characterized in that the rocker assembling system comprises a rocker circulating conveying line, and a rocker pressing-in station and a retainer ring clamp spring assembling station are arranged on the rocker shaft circulating conveying line; an air inlet rocker arm robot and an air exhaust rocker arm robot are respectively arranged on two sides of the rocker arm shaft circulating conveying line, and a rocker arm shaft positioning seat is arranged on the rocker arm shaft circulating conveying line; the rocker arm pressing station is provided with an air inlet rocker arm assembling and butting mechanism, an exhaust rocker arm assembling and butting mechanism, a rocker arm shaft jacking mechanism and a rocker arm shaft pressing limiting mechanism, the air inlet rocker arm assembling and butting mechanism and the exhaust rocker arm assembling and butting mechanism are oppositely arranged on the inner side and the outer side of the rocker arm shaft circulating conveying line, the front part of the air inlet rocker arm assembling and butting mechanism is provided with an air inlet rocker arm position limiting tool, the front part of the exhaust rocker arm assembling and butting mechanism is provided with an exhaust rocker arm position limiting tool, the rocker arm shaft jacking mechanism is arranged in the rocker arm shaft circulating conveying line and is positioned between the air inlet rocker arm assembling and butting mechanism and the exhaust rocker arm assembling and butting mechanism, and the rocker arm shaft pressing limiting mechanism is arranged above the rocker arm shaft jacking mechanism; retainer ring jump ring assembly station department is provided with the rocking arm retaining ring jump ring feed mechanism that admits air, exhaust rocking arm retaining ring jump ring feed mechanism, rocking arm retaining ring jump ring impress mechanism and exhaust rocking arm retaining ring jump ring impress mechanism that admits air, rocking arm retaining ring jump ring impress mechanism and the rocking arm retaining ring jump ring impress mechanism that admits air set up the inside and outside both sides at rocking arm axle circulation transfer chain respectively that admits air, rocking arm retaining ring jump ring feed mechanism that admits air sets up in the top of rocking arm retaining ring jump ring impress mechanism that admits air, exhaust rocking arm retaining ring jump ring feed mechanism sets up the top at the rocking arm retaining ring jump ring impress mechanism that admits air, the butt joint interface of pre-compaction frock axle is all installed to the front portion of rocking arm retaining ring jump ring impress mechanism and the rocking arm retaining ring jump ring impress mechanism that admits air.

17. The full-automatic assembly production line of the engine valve rocker according to claim 16, wherein the intake rocker assembly docking mechanism or the exhaust rocker assembly docking mechanism comprises a base, a press-in cylinder and a pressure head, the base is provided with a guide rail, the press-in cylinder is installed on the base, and the pressure head is installed on the guide rail of the base and connected with the press-in cylinder.

18. The full-automatic assembly line of the engine valve rocker according to claim 16, wherein the rocker shaft jacking mechanism comprises a mounting seat, a jacking cylinder and a jacking seat, the jacking cylinder is mounted on the mounting seat, and the jacking cylinder is connected with the jacking seat.

19. The full-automatic assembly production line of the engine valve rocker arm according to claim 16, wherein the intake rocker arm retainer ring clamp spring feeding mechanism or the exhaust rocker arm retainer ring clamp spring feeding mechanism comprises a bottom plate, a material column support frame, a clamp spring feeding column, a retainer ring feeding cylinder, a retainer ring feeding push plate, a clamp spring feeding push plate and a clamp spring feeding cylinder, wherein the material column support frame is vertically installed on the bottom plate, and the clamp spring feeding column and the retainer ring feeding column are suspended on the upper part of the material column support frame; a material separating plate and a pressing plate are sequentially arranged above the bottom plate, and two layers of spaces are formed among the bottom plate, the material separating plate and the pressing plate; the retainer ring feeding push plate is arranged in a space between the material separating plate and the pressing plate and is connected with the retainer ring feeding cylinder, and the retainer ring feeding cylinder drives the retainer ring feeding push plate to reciprocate so as to realize automatic feeding of the retainer ring; the clamp spring feeding push plate is arranged in a space between the bottom plate and the material separating plate and is connected with the clamp spring feeding cylinder, and the clamp spring feeding cylinder drives the clamp spring feeding push plate to reciprocate to realize automatic feeding of the clamp spring; the check ring feeding cylinder and the clamp spring feeding cylinder are both installed on one side of the bottom plate, the other side of the bottom plate is provided with a pre-pressing tool shaft, and the clamp spring and the check ring penetrate the pre-pressing tool shaft into the clamp spring and the check ring through a manipulator after feeding in place.

20. The full-automatic assembly production line of the engine valve rocker according to claim 16, wherein the inlet rocker retainer ring clamp spring press-in mechanism or the exhaust rocker retainer ring clamp spring press-in mechanism comprises a base, a press-in cylinder and a pressure head, a guide rail is arranged on the base, the press-in cylinder is arranged on the base, the pressure head is arranged on the guide rail of the base and connected with the press-in cylinder, and a butt joint interface of a prepressing tooling shaft is arranged at the front end of the pressure head.