CN110103022B

CN110103022B - Piston assembly mounting device of air spring piston rod assembly

Info

Publication number: CN110103022B
Application number: CN201910438087.3A
Authority: CN
Inventors: 王旭东; 胡威明; 魏海泉
Original assignee: Ningbo Automation Equipment Co ltd
Current assignee: Ningbo Automation Equipment Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-11-03
Anticipated expiration: 2039-05-24
Also published as: CN110103022A

Abstract

The invention relates to the technical field of piston rod production equipment, in particular to a piston assembly mounting device of a gas spring piston rod assembly, wherein a piston rod unloading manipulator and a sorting mechanism are arranged between a rotary worktable and a stepping unloading platform, an opening pad mounting mechanism, a piston ring mounting mechanism, a piston mounting mechanism, a gasket mounting mechanism, a detection mechanism and a spin riveting mechanism are sequentially arranged along the working direction of the rotary worktable, and a blowing cleaning mechanism is fixedly mounted on the stepping unloading platform; the rotary worktable, the stepping unloading platform, the piston rod unloading manipulator, the opening pad mounting mechanism, the piston ring mounting mechanism, the piston mounting mechanism, the gasket mounting mechanism, the detection mechanism, the spin riveting mechanism, the piston rod unloading manipulator, the sorting mechanism and the blowing cleaning mechanism are all electrically connected with the controller; the device can automatically adapt to piston rods with different lengths, automatically install the piston assembly and automatically detect whether the piston assembly is installed correctly.

Description

Piston assembly mounting device of air spring piston rod assembly

Technical Field

The invention relates to the technical field of piston rod production equipment, in particular to a piston assembly mounting device of a gas spring piston rod assembly.

Background

The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the cross section area of the piston rod smaller than that of the piston.

The gas spring piston rod is an important component of the gas spring. The air spring is applied to office furniture, a piston rod of the air spring is made of round steel, the surface of the currently used piston rod is subjected to electroplating treatment, when the air spring works, the piston rod is subjected to extension or compression movement and is continuously impacted for a long time, so that the surface of the piston rod is easy to wear, the fatigue resistance is low, the service life of the piston rod is shortened, the structure of the combined part of the piston rod and the piston is not ideal, the processing is complex, and the requirements of products cannot be met.

The piston rod is provided with a plurality of envelopes and gaskets, the shapes and the installation sequences of each envelope and gasket are different, and any misassembly and neglected assembly damage the performance of the gas spring; however, the long manual assembly process of workers has a hidden error risk, and an automatic assembly system is not provided to avoid the problem.

Chinese patent CN203973466U discloses an automatic equipment system of bumper shock absorber piston rod, include the first valve block equipment inspection machine that sets gradually along the transfer chain, valve body feed inspection machine, second valve block equipment inspection machine, third valve block equipment inspection machine, valve system transfer robot arm, valve system and steel pole equipment inspection machine and piston rod blanking machine, the utility model discloses at the whole automatic equipment of realization of equipment overall process, detect, reduced the probability that the human factor caused badness, automatic check out test set's use has improved the precision and the proportion that detect, has reduced the bad circulation of production to the possibility of lower process, and the effectual wrong dress and the neglected loading of having avoided the gasket, the bumper shock absorber's that also is the assurance performance. Meanwhile, the stability of the production efficiency is improved, and the labor cost is reduced.

For the same purpose, in order to improve production efficiency and yield, an automatic assembling apparatus for a gas spring piston rod is required, and for the automatic assembling apparatus, a piston assembly mounting device for a gas spring piston rod assembly needs to be designed.

Disclosure of Invention

The invention aims to provide a piston assembly mounting device of a gas spring piston rod assembly, which can automatically adapt to piston rods with different lengths, automatically mount a piston assembly and automatically detect whether the piston assembly is correctly mounted.

In order to achieve the purpose, the invention adopts the following technical scheme:

the piston assembly mounting device comprises a rotary workbench, a stepping discharging table and a controller which are arranged adjacently, wherein a piston rod discharging manipulator and a sorting mechanism are arranged between the rotary workbench and the stepping discharging table, an opening pad mounting mechanism, a piston ring mounting mechanism, a piston mounting mechanism, a gasket mounting mechanism, a detection mechanism and a spin riveting mechanism are sequentially arranged along the working direction of the rotary workbench, and a blowing cleaning mechanism is fixedly mounted on the stepping discharging table;

the rotary worktable, the stepping unloading platform, the piston rod unloading manipulator, the opening pad mounting mechanism, the piston ring mounting mechanism, the piston mounting mechanism, the gasket mounting mechanism, the detection mechanism, the spin riveting mechanism, the piston rod unloading manipulator, the sorting mechanism and the blowing cleaning mechanism are all electrically connected with the controller.

As a preferred scheme of a piston assembly mounting device of a gas spring piston rod assembly, an opening pad mounting mechanism and a piston ring mounting mechanism respectively comprise a vibrating disc, a linear feeder, a feeding table and a feeding manipulator, wherein a discharge port of the vibrating disc is communicated with a feeding port of the linear feeder, a discharge port of the linear feeder is communicated with a feeding port of the feeding table, the feeding manipulator is arranged above the feeding table, and a working end of the feeding manipulator is arranged right above the discharge port of the feeding table; the material loading platform sets up the work end side at rotary worktable, and the direction of work of material loading manipulator sets up towards rotary worktable's work end.

As a preferred scheme of the piston assembly mounting device of the gas spring piston rod assembly, the feeding manipulator comprises a vertical linear driver, a horizontal linear driver and a feeder, wherein the working direction of the vertical linear driver is vertically arranged, and the horizontal linear driver is fixedly mounted at the working end of the vertical linear driver; the working direction of the horizontal linear driver is horizontally arranged towards the rotary working table, the feeding device is fixedly arranged at the working end of the horizontal linear driver, and the working end of the feeding device is vertically arranged downwards.

As a preferred scheme of a piston assembly mounting device of a gas spring piston rod assembly, a feeder comprises a first finger cylinder and a second fixed block, wherein the first finger cylinder is fixedly mounted at the working end of a horizontal linear driver, and the second fixed block is fixedly mounted at the fixed part of the first finger cylinder;

the working end of the first finger cylinder is respectively and fixedly provided with two first material taking columns which are symmetrical to each other, the first material taking columns are semi-cylindrical, and the first material taking columns are folded into a complete cylinder in an initial state;

the second fixing block is slidably provided with two first pushing block sliding columns which are parallel to each other, the top end of each first pushing block sliding column is provided with a first sliding column stop block which prevents the first pushing block sliding column from separating from the second fixing block downwards, the bottom end of each first pushing block sliding column is fixedly provided with a first pushing sliding block, and the first pushing block sliding column is sleeved with a first spring of which two ends are respectively abutted against the second fixing block and the first pushing sliding block;

the first material pushing sliding block is provided with a material taking column through hole through which the first material taking column can pass, the first material pushing sliding block is sleeved on the outer side of the first material taking column, and the first material pushing sliding block is located below the second fixing block in an initial state.

As a preferred scheme of a piston assembly mounting device of a gas spring piston rod assembly, a feeding device comprises a third fixing block, a material taking fork, a nineteenth linear driver and a second material pushing block, the third fixing block is fixedly mounted at the working end of the horizontal linear driver, the material taking fork is fixedly mounted at the bottom end of the third fixing block, the nineteenth linear driver is fixedly mounted on the side face of the third fixing block, the output direction of the nineteenth linear driver is vertically and downwards arranged, the second material pushing block is fixedly mounted at the bottom end of the nineteenth linear driver, a material taking fork through hole through which the material taking fork can pass is formed in the second material pushing block, the second material pushing block is sleeved on the outer side of the material taking fork, and the second material pushing block is located above the working end of the material taking fork in an.

As an optimal scheme of a piston assembly installation device of an air spring piston rod assembly, get the material fork and be the flat plate shape of vertical setting, get the middle-end width of material fork and be greater than the diameter of piston ring, get the bottom width of material fork and be less than the diameter of piston ring, get the middle-end and the bottom smooth transition of material fork, get the centre of material fork and be provided with from getting the vertical slotted hole that upwards extends in bottom of material fork, the inner wall and the piston rod clearance fit of slotted hole.

As an optimal scheme of a piston assembly mounting device of a gas spring piston rod assembly, a spin riveting mechanism comprises a spin riveting machine support, a spin riveting machine, a first rotation stopping device and a second rotation stopping device, the spin riveting machine support is arranged beside a working end of a rotary worktable, the spin riveting machine is fixedly mounted at the top end of the spin riveting machine support, the working end of the spin riveting machine is vertically and downwards arranged, the working end of the spin riveting machine is positioned right above the working end of the rotary worktable, the first rotation stopping device and the second rotation stopping device are both mounted inside the spin riveting machine support, the first rotation stopping device is arranged right above the second rotation stopping device, and in a working state, the working ends of the first rotation stopping device and the second rotation stopping device are both positioned right below the working end of the rotary worktable.

As an optimal scheme of a piston assembly mounting device of an air spring piston rod assembly, a first rotation stopping device comprises a twenty-fifth linear driver, a fourth finger cylinder and a second sliding rail, the twenty-fifth linear driver is fixedly mounted inside a spin riveting machine support, the working direction of the twenty-fifth linear driver faces the working end of a rotary worktable, the fourth finger cylinder and the second sliding rail are fixedly mounted at the working end of the twenty-fifth linear driver, the working direction of the second sliding rail is parallel to the working direction of the fourth finger cylinder, two working ends of the fourth finger cylinder are respectively provided with rotation stopping clamping jaws which are symmetrical to each other, and the rotation stopping clamping jaws are connected with the second sliding rail in a sliding manner.

As a preferred scheme of the piston assembly mounting device of the air spring piston rod assembly, the piston rod unloading manipulator comprises a twenty-sixth linear driver, a twenty-seventh linear driver, a twenty-eighth linear driver, a second rotary driver and a second piston rod mechanical clamping jaw;

the working direction of the twenty-sixth linear driver is horizontally arranged towards the rotary worktable, and the twenty-seventh linear driver is fixedly arranged at the working end of the twenty-sixth linear driver;

the working direction of the twenty-seventh linear driver is vertically downward, the working direction of the twenty-eighth linear driver is vertically upward, and the working end of the twenty-eighth linear driver is fixedly connected with the working end of the twenty-seventh linear driver;

the second rotary driver is fixedly connected with the twenty-eighth linear driver, a rotating shaft of the second rotary driver is horizontally arranged, and a working end of the second rotary driver can rotate within the range of 0-90 degrees;

the second piston rod mechanical clamping jaw and the third piston rod mechanical clamping jaw are arranged in parallel and are both fixedly arranged at the working end of the second rotary driver;

the second rotary driver comprises a second rotary table fixedly connected with a twenty-eighth linear driver, a second crank and a twenty-ninth linear driver are rotatably mounted on the second rotary table, the rotating shafts of the second crank and the twenty-ninth linear driver are horizontally arranged, the working end of the twenty-ninth linear driver is hinged with the suspended end of the second crank, and a second piston rod mechanical clamping jaw is fixedly mounted on the rotating shaft of the second crank.

As a preferred scheme of the piston assembly mounting device of the air spring piston rod assembly, the sorting mechanism comprises a second upright post, a sorting platform, a waste bin, a third crank and a thirty-third linear driver, the second upright post is vertically arranged, the sorting platform is rotatably mounted at the top end of the second upright post, the waste bin is fixedly mounted on the side surface of the second upright post and is positioned right below one end of the sorting platform, and the other end of the sorting platform is right opposite to the working end of the stepping discharging platform;

the rotating shaft of the third crank is fixedly arranged on the rotating shaft of the sorting table, two ends of the thirty-first linear driver are hinged with the second upright post and the working end of the third crank respectively, and the thirty-first linear driver is electrically connected with the controller.

The invention has the beneficial effects that:

the controller is used for receiving and sending signals so as to control the rotary workbench, the stepping discharging table, the piston rod discharging manipulator, the opening pad installing mechanism, the piston ring installing mechanism, the piston installing mechanism, the gasket installing mechanism, the detecting mechanism, the spin riveting mechanism, the piston rod discharging manipulator, the sorting mechanism and the blowing cleaning mechanism to work in sequence, wherein the detecting result is sent to the controller after the gasket installing mechanism finishes detection, the controller sends the detecting result to the sorting mechanism, and the sorting mechanism selectively moves the piston rod assembly to the waste box or the working end of the stepping discharging table according to the detecting result;

the rotary worktable is used for driving a piston rod occluded at the working end of the rotary worktable to pass through each station in sequence;

the opening pad mounting mechanism is used for mounting an opening pad, the piston ring mounting mechanism is used for mounting a piston ring, the piston mounting mechanism is used for mounting a piston, and the gasket mounting mechanism is used for mounting a gasket;

the detection mechanism is used for detecting the piston rod assembly and detecting whether the piston rod assembly is neglected or misassembled;

the rotary riveting mechanism is used for carrying out rotary riveting on the piston rod assembly, and the piston rod discharging manipulator takes down the piston rod assembly subjected to rotary riveting and puts the piston rod assembly into the sorting mechanism;

the sorting mechanism moves the qualified products to a stepping discharging table and moves the unqualified products to a waste box according to the detection result of the detection mechanism;

the stepping discharging table drives the piston rod assembly to move forward towards the air blowing cleaning mechanism, and the air blowing cleaning mechanism works to blow air to clean the piston rod assembly, so that the piston rod assembly is assembled.

1. The device can be used for fully automatically installing the piston assembly of the air spring piston rod assembly;

2. the device can automatically adapt to piston rods with different lengths;

3. the device can automatically detect whether the piston assembly is installed correctly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is an elevation view of a piston rod assembly according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of a piston rod assembly according to an embodiment of the present invention;

FIG. 3 is a top plan view of an assembly apparatus for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 4 is a top plan view of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 5 is a perspective view of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view of an open pad mounting mechanism of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 7 is a perspective view of a split shim of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 8 is a perspective view of a piston ring mounting mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 9 is a perspective view of a piston ring loader of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 10 is a perspective view of a spin-on mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 11 is a perspective view of a first rotation stop of the piston assembly mounting arrangement of a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 12 is a perspective view of a sorting mechanism and its surrounding structure of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 13 is an elevational view of a piston rod unloading robot for the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 14 is a perspective view of a piston rod unloading robot for the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 15 is a perspective view of a sorting mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 16 is a perspective view of a piston mounting mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 17 is a perspective view of a partial structure of the piston mounting mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 18 is a perspective view of a piston loader of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 19 is a perspective view of a piston centering mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 20 is a first perspective view of a sensing mechanism of a piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 21 is a second perspective view of a sensing mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 22 is a third perspective view of a sensing mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 23 is a fourth perspective view of the sensing mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with the present invention;

FIG. 24 is a left side elevational view of the hold down mechanism of the detection mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 25 is a right side elevational view of the clamping mechanism of the sensing mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with the present invention;

FIG. 26 is a first perspective view of a pneumatic plug gauge and travel detector of the detection mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 27 is a second perspective view of a pneumatic plug gauge and travel detector of the detection mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 28 is a perspective view three of a pneumatic plug gauge and travel detector of the detection mechanism of the piston assembly mounting arrangement for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 29 is a perspective view of a blow cleaning mechanism for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 30 is a top view of a blow cleaning mechanism for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 31 is an enlarged view of a portion of FIG. 30 at T;

FIG. 32 is a perspective view of a third lifting bracket and blow nozzle of the blow cleaning mechanism for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 33 is a bottom view of a third lifting bracket and blow nozzle of the blow cleaning mechanism for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 34 is a perspective view of a portion of a blow cleaning mechanism for a gas spring piston rod assembly in accordance with an embodiment of the present invention;

FIG. 35 is a second isometric view of the blow cleaning mechanism of a gas spring piston rod assembly in accordance with an embodiment of the present invention;

in the figure:

A. a piston rod assembly; a1, a piston rod; a2, a guider; a3, oil sealing; a4, spacer bush; a5, opening pad; a6, piston ring; a7, a piston; a8, gasket;

B. a rotary table; C. a stepping feeding table; D. a stepping discharging platform; E. a piston rod feeding manipulator; F. a guider mounting mechanism; G. an oil seal mounting mechanism; H. a spacer bush mounting mechanism; I. a correction mechanism;

J. an open gasket mounting mechanism; j1, open pad vibrating pan; j2, open pad linear feeder; j3, opening pad feeding table; j4, open pad feeding manipulator; j4a, seventeenth linear drive; j4b, eighteenth linear drive; j4c, first finger cylinder; j4d, a first material taking column; j4e and a second fixed block; j4f, a first pusher shoe slide; j4f1, first spool stop; j4g, first spring; j4h, a first material pushing slide block;

K. a piston ring mounting mechanism; k1 and a third fixed block; k2, a take-off fork; k2a, slotted hole; k3, nineteenth linear drive; k4, a second pusher block;

l, a piston mounting mechanism; l1, piston vibrating disk; l2, piston linear feeder; l3, piston feeding table; l4, a piston feeding manipulator; l4a, twentieth linear drive; l4b, twenty-first linear drive; l4c, second finger cylinder; l4d, a second material taking column; l4e and a fourth fixing block; l4f, a second pusher block traveler; l4f1, second spool stop; l4g, second spring; l4h and a second material pushing slide block; l5, piston centering mechanism; l5a, centralizer support; l5b, twenty-second linear drive; l5c, third finger cylinder; l5d, centering clamp splice; l5d1, semicircular hole; l5d2, chamfering;

m, a gasket mounting mechanism;

n, a detection mechanism; n1, impactor stent; n2, a pressing mechanism; n2a, twenty-third linear drive; n2a1, a first single-axis single-rod cylinder; n2a2, a guide sleeve; n2a3, guide posts; n2a4, a first spring pressing block; n2a5, movable plate stopper; n2a6, third spring; n2b, a second flap; n2c, third sleeve; n2d, a fifth photoelectric switch; n2e, a third adjustable support; n3, plug gauge support; n3a, a first upright; n3b and a second fixing plate; n3b1, a first slide rail; n3c, plug gauge slide rail; n3d, a plug gauge slide block; n4, pneumatic plug gauge; n4a, twenty-fourth linear drive; n4a1, a second single-shaft single-rod cylinder; n4a2 and a second spring pressing block; n4a3, second spring; n4a4, plug gauge slide block stop block; n4b, plug gauge; n5, stroke detector; n5a, a sixth photoelectric switch; n5b, a seventh photoelectric switch; n5c, a fourth adjustable support; n5d, a fifth adjustable support;

o, a spin riveting mechanism; o1, spin riveter bracket; o2, spin riveting machine; o3, a first rotation stop; o3a, twenty-fifth linear drive; o3b, fourth finger cylinder; o3c, anti-rotation jaws; o3d, second sliding rail; o4, second rotation stopper;

p, a piston rod unloading manipulator; p1, twenty-sixth linear drive; p2, twenty-seventh linear drive; p3, twenty-eighth linear drive; p4, second rotary drive; p4a, second turntable; p4b, second crank; p4c, twenty ninth linear drive; p5, a second piston rod mechanical jaw; p6, third piston rod mechanical jaw;

q, a sorting mechanism; q1, second upright; q2, sorting deck; q3, waste bin; q4, third crank; q5, thirtieth linear drive;

r, a blowing cleaning mechanism; r1, a first lifting bracket; r1a, thirty-first linear drive; r1b, a first horizontal plate; r1c, a first vertical plate; r2 and a second lifting bracket; r2a, thirty-second linear drive; r2b, second horizontal plate; r2c, a second vertical plate; r3, a third lifting bracket; r3a and a portal frame; r3b, thirty-third linear drive; r3c, blowing nozzle support; r4, driving wheel pair; r4a, long axis; r4b, a first runner; r4c, a third servo motor; r5, driven wheel pair; r5a, minor axis; r5b, a second runner; r6, an air blowing nozzle; r7, eighth photoelectric switch.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 2, a piston rod assembly a includes a piston rod a1, a guide a2, an oil seal A3, a spacer a4, an opening pad A5, a piston ring A6, a piston a7 and a gasket a8, which are sequentially sleeved at the middle end of the piston rod a1 from bottom to top, and are sequentially sleeved at the tail end of the piston rod a1 from inside to outside;

referring to fig. 3, the assembling device for the air spring piston rod assembly comprises a rotary table B, a stepping feeding table C and a stepping discharging table D which are adjacently arranged, wherein a piston rod feeding mechanism E, a guider mounting mechanism F, an oil seal mounting mechanism G, a spacer mounting mechanism H, a primary detection mechanism I and a piston assembly mounting device for the air spring piston rod assembly are arranged beside the rotary table B and sequentially surround the rotary table B by taking the stepping feeding table C as a starting point and the stepping discharging table D as a finishing point.

Referring to fig. 4 to 5, the piston assembly mounting device for the gas spring piston rod assembly comprises a rotary table B, a stepping discharging table D and a controller which are adjacently arranged, and is characterized in that a piston rod discharging manipulator P and a sorting mechanism Q are arranged between the rotary table B and the stepping discharging table D, an open pad mounting mechanism J, a piston ring mounting mechanism K, a piston mounting mechanism L, a gasket mounting mechanism M, a detection mechanism N and a spin riveting mechanism O are sequentially arranged along the working direction of the rotary table B, and a blowing cleaning mechanism R is fixedly arranged on the stepping discharging table D;

the rotary worktable B, the stepping unloading platform D, the piston rod unloading manipulator P, the opening pad mounting mechanism J, the piston ring mounting mechanism K, the piston mounting mechanism L, the gasket mounting mechanism M, the detection mechanism N, the rotary riveting mechanism O, the piston rod unloading manipulator P, the sorting mechanism Q and the blowing cleaning mechanism R are all electrically connected with the controller.

The opening pad mounting mechanism J and the piston ring mounting mechanism K respectively comprise a vibrating disc, a linear feeder, a feeding table and a feeding manipulator, wherein a discharge port of the vibrating disc is communicated with a feeding port of the linear feeder, a discharge port of the linear feeder is communicated with a feeding port of the feeding table, the feeding manipulator is arranged above the feeding table, and a working end of the feeding manipulator is arranged right above the discharge port of the feeding table; the feeding platform is arranged beside the working end of the rotary working platform B, and the working direction of the feeding manipulator is arranged towards the working end of the rotary working platform B.

Referring to fig. 6 to 7, the split pad mounting mechanism J includes a split pad vibration tray J1, a split pad linear feeder J2, a split pad feeding table J3, and a split pad feeding manipulator J4, wherein a discharge port of the split pad vibration tray J1 is communicated with a feed port of the split pad linear feeder J2, a discharge port of the split pad linear feeder J2 is communicated with a feed port of the split pad feeding table J3, the split pad feeding manipulator J4 is disposed above the split pad feeding table J3, and a working end of the split pad feeding manipulator J4 is disposed directly above a discharge port of the split pad feeding table J3; the opening pad feeding platform J3 is arranged on the side of the working end of the rotary workbench B, and the working direction of the opening pad feeding manipulator J4 is arranged towards the working end of the rotary workbench B.

The split pad vibrating tray J1 and the split pad linear feeder J2 continuously transfer the split pad a5 to the feed port of the split pad feeding table J3, the split pad a5 stays in the split pad feeding table J3 and blocks the entry of the subsequent split pad a5, then the split pad feeding manipulator J4 grabs the split pad a5 from the discharge port of the split pad feeding table J3 and mounts it onto the piston rod a1 held by the working end of the rotary table B, and the subsequent split pad a5 continues to enter the split pad feeding table J3 under the joint operation of the split pad vibrating tray J1 and the split pad linear feeder J2.

The feeding manipulator comprises a vertical linear driver, a horizontal linear driver and a feeder, the working direction of the vertical linear driver is vertically arranged, and the horizontal linear driver is fixedly arranged at the working end of the vertical linear driver; the working direction of the horizontal linear driver is horizontally arranged towards the rotary working table B, the feeding device is fixedly arranged at the working end of the horizontal linear driver, and the working end of the feeding device is vertically arranged downwards.

The opening pad feeding manipulator J4 comprises a seventeenth linear driver J4a, an eighteenth linear driver J4B and a first finger cylinder J4c, wherein the working direction of the seventeenth linear driver J4a is vertically arranged, the eighteenth linear driver J4B is fixedly arranged at the working end of the seventeenth linear driver J4a, the working direction of the eighteenth linear driver J4B is horizontally arranged towards the rotary worktable B, the first finger cylinder J4c is fixedly arranged at the working end of the eighteenth linear driver J4B, and the working end of the first finger cylinder J4c is vertically and downwards arranged;

the seventeenth linear driver J4a and the eighteenth linear driver J4B are both single-shaft single-rod air cylinder sliding tables, the seventeenth linear driver J4a drives the eighteenth linear driver J4B to drive the first finger air cylinder J4c to vertically move downwards so as to clamp the guide A2 from the discharge hole of the open mat feeding table J3, then the seventeenth linear driver J4a resets, the eighteenth linear driver J4B drives the first finger air cylinder J4c to move to the position right above the working end of the rotary worktable B, then the seventeenth linear driver J4a drives the eighteenth linear driver J4B to drive the first finger air cylinder J4c to vertically move downwards, and therefore the guide A2 clamped by the first finger air cylinder J4c is sleeved on the piston rod A1 clamped by the working end of the rotary worktable B.

The loader comprises a first finger cylinder J4c and a second fixed block J4e, the first finger cylinder J4c is fixedly arranged at the working end of the horizontal linear driver, and the second fixed block J4e is fixedly arranged at the fixed part of the first finger cylinder J4 c;

the working ends of the first finger cylinders J4c are respectively and fixedly provided with two first material taking columns J4d which are symmetrical to each other, the first material taking columns J4d are semi-cylindrical, and the first material taking columns J4d are folded into a complete cylinder in the initial state;

two first pushing block sliding columns J4f which are parallel to each other are slidably mounted on the second fixing block J4e, a first sliding column stop block J4f1 which prevents the first pushing block sliding column J4f from separating from the second fixing block J4e downwards is mounted at the top end of the first pushing block sliding column J4f, a first pushing slider J4h is fixedly mounted at the bottom end of the first pushing block sliding column J4f, and a first spring J4g of which two ends are respectively abutted against the second fixing block J4e and the first pushing slider J4h is sleeved on the first pushing block sliding column J4 f;

the first material pushing slider J4h is provided with a material taking column through hole through which the first material taking column J4d can pass, the first material pushing slider J4h is sleeved outside the first material taking column J4d, and the first material pushing slider J4h is located below the second fixing block J4e in an initial state.

When material is taken, the first material pushing slider J4h abuts against the opening pad A5 and moves vertically upwards along the J4f by overcoming the resilience force of the first spring J4g, the first finger cylinder J4c drives the first material taking column J4d to fold, the first material taking column J4d penetrates through a material taking column through hole in the first material pushing slider J4h and is inserted into the inner ring of the opening pad A5, and then the first finger cylinder J4c drives the first material taking column J4d to separate so as to clamp the inner ring of the opening pad A5, so that the material loading device can grab the opening pad A5;

when feeding, the seventeenth linear driver J4a and the eighteenth linear driver J4b drive the feeder to move to the top end of the piston rod a1, and make the first material taking column J4d abut on the top end of the piston rod a1, and then the first finger cylinder J4c drives the first material taking column J4d to close, so that the opening pad loses the friction force given by the first material taking column J4d, and thus the first spring J4g can drive the first material pushing slider J4h to vertically move downwards along J4f through the self resilience force, so that the opening pad is pushed into the mounting position at the top end of the piston rod a 1.

Referring to fig. 8 to 9, the piston ring feeder includes a third fixing block K1, a material taking fork K2, a nineteenth linear driver K3 and a second material pushing block K4, the third fixing block K1 is fixedly installed at a working end of the horizontal linear driver, the material taking fork K2 is fixedly installed at a bottom end of a third fixing block K1, the nineteenth linear driver K3 is fixedly installed at a side surface of the third fixing block K1, an output direction of the nineteenth linear driver K3 is vertically arranged downward, the second material pushing block K4 is fixedly installed at a bottom end of the nineteenth linear driver K3, a material taking fork through hole through which the material taking fork K2 can pass is formed in the second material pushing block K4, the second material pushing block K4 is sleeved on an outer side of the material taking fork K2, and the second material pushing block K4 is located above the working end of the material taking fork K2 in an initial.

The open pad A5 and the gasket A8 are both hard metal gaskets, and the piston ring A6 is an elastic circular ring, so the structure of the open pad installation mechanism J is completely the same as that of the gasket installation mechanism M, and the difference between the open pad installation mechanism J and the piston ring installation mechanism K is that a loader is different;

when the piston ring installation mechanism K takes materials, after the material taking fork K2 is inserted into the piston ring A6, the piston ring A6 is naturally tightened outside the material taking fork K2, so that a material feeder can take materials through the material taking fork K2, and a nineteenth linear driver K3 is a double-shaft double-rod cylinder;

when the piston ring installation mechanism K is used for loading, the vertical linear driver and the horizontal linear driver drive the third fixed block K1 to drive the material taking fork K2 to move right above the piston rod A1, and then the nineteenth linear driver K3 starts to drive the second material pushing block K4 to vertically move downwards, so that the piston ring A6 sleeved on the material taking fork K2 is pushed into an installation position at the top end of the piston rod A1.

Get the flat plate shape of material fork K2 for vertical setting, get the diameter that the middle-end width of material fork K2 is greater than the piston ring, get the diameter that the bottom width of material fork K2 is less than the piston ring, get the middle-end and the bottom smooth transition of material fork K2, get the centre of material fork K2 and be provided with from getting the vertical slotted hole K2a that upwards extends in bottom of material fork K2, slotted hole K2 a's inner wall and piston rod clearance fit.

The bottom end of the material taking fork K2 is provided with a fillet, so that the bottom end of the material taking fork K2 is easily inserted into the inner ring of the piston ring A6, then the piston ring A6 moves upwards along the side wall of the material taking fork K2 and gradually expands to be tightened at the middle end of the material taking fork K2, when the piston ring A6 is fed, the top end of the piston rod A1 is positioned in the middle of the slotted hole K2a, the bottom end of the slotted hole K2a is opposite to the installation position of the piston ring A6, and therefore when the second material pushing block K4 pushes the piston ring A6 to be sleeved on the piston rod A1, the piston ring A6 can accurately enter the installation position along the material taking fork K2.

Referring to fig. 10 to 11, a spin riveting mechanism O includes a spin riveter support O1, a spin riveter O2, a first rotation stopper O3, and a second rotation stopper O4, where the spin riveter support O1 is disposed beside a working end of a rotary worktable B, the spin riveter O2 is fixedly mounted at a top end of the spin riveter support O1, the working end of the spin riveter O2 is disposed vertically downward, the working end of the spin riveter O2 is located right above the working end of the rotary worktable B, the first rotation stopper O3 and the second rotation stopper O4 are both mounted inside the spin riveter support O1, the first rotation stopper O3 is disposed right above the second rotation stopper O4, and in a working state, the working ends of the first rotation stopper O3 and the second rotation stopper O4 are both located right below the working end of the rotary worktable B.

The rotary worktable B moves the piston rod assembly A to be right below the spin riveting machine O2, the first rotation stopper O3 or the second rotation stopper O4 is started according to the length of the piston rod assembly A to clamp the piston rod assembly A to be incapable of rotating, and then the spin riveting machine O2 is started to spin rivet the gasket A8 at the top end of the piston rod assembly A.

The first rotation stopping device O3 includes a twenty-fifth linear actuator O3a, a fourth finger cylinder O3B and a second slide rail O3d, the twenty-fifth linear actuator O3a is fixedly mounted inside the spin riveting machine bracket O1, the working direction of the twenty-fifth linear actuator O3a faces the working end of the rotary worktable B, the fourth finger cylinder O3B and the second slide rail O3d are both fixedly mounted at the working end of the twenty-fifth linear actuator O3a, the working direction of the second slide rail O3d is parallel to the working direction of the fourth finger cylinder O3B, two working ends of the fourth finger cylinder O3B are respectively mounted with rotation stopping jaws O3c which are symmetrical to each other, and the rotation stopping jaws O3c are slidably connected with the second slide rail O3 d.

During operation, the twenty-fifth linear driver O3a drives the fourth finger cylinder O3b to move towards the piston rod assembly A, the fourth finger cylinder O3b drives the two rotation stopping clamping jaws O3c to move oppositely, and the rotation stopping clamping jaws O3c slide oppositely along the second sliding rail O3d and clamp the piston rod assembly A, so that the piston rod assembly A is prevented from being driven to rotate when being riveted by the spin riveting machine O2.

The piston rod unloading manipulator P shown in fig. 13 to 14 comprises a twenty-sixth linear driver P1, a twenty-seventh linear driver P2, a twenty-eighth linear driver P3, a second rotary driver P4 and a second piston rod mechanical clamping jaw P5;

the working direction of the twenty-sixth linear driver P1 is horizontally arranged towards the rotary worktable B, and the twenty-seventh linear driver P2 is fixedly arranged at the working end of the twenty-sixth linear driver P1;

the working direction of the twenty-seventh linear driver P2 is vertically downward, the working direction of the twenty-eighth linear driver P3 is vertically upward, and the working end of the twenty-eighth linear driver P3 is fixedly connected with the working end of the twenty-seventh linear driver P2;

the second rotary driver P4 is fixedly connected with the twenty-eighth linear driver P3, the rotating shaft of the second rotary driver P4 is horizontally arranged, and the working end of the second rotary driver P4 can rotate in the range of 0-90 degrees;

the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 are arranged in parallel and are both fixedly arranged at the working end of the second rotary driver P4;

the second rotary driver P4 comprises a second rotary table P4a fixedly connected with a twenty-eighth linear driver P3, a second crank P4b and a twenty-ninth linear driver P4c are rotatably mounted on the second rotary table P4a, the rotary shafts of the second crank P4b and the twenty-ninth linear driver P4c are both horizontally arranged, the working end of the twenty-ninth linear driver P4c is hinged with the suspended end of the second crank P4b, and the second piston rod mechanical clamping jaw P5 is fixedly mounted on the rotary shaft of the second crank P4 b.

The twenty-sixth linear driver P1 and the twenty-seventh linear driver P2 are both single-shaft single-rod cylinder sliding tables, the twenty-eighth linear driver P3 is a double-shaft double-rod cylinder, the twenty-eighth linear driver P3 is fixedly installed at the sliding end of the twenty-seventh linear driver P2, the working end of the twenty-eighth linear driver P3 is fixedly connected with the working end of the cylinder of the twenty-seventh linear driver P2, so that the twenty-seventh linear driver P2 can drive the sliding end of the twenty-seventh linear driver to ascend and descend, the twenty-eighth linear driver P3 can further drive the sliding end of the twenty-seventh linear driver P2 to ascend and descend, and the second rotary driver P4 is fixedly installed at the sliding end of the twenty-seventh linear driver P2;

when the piston rod unloading manipulator P grabs the piston rod assembly A, the twenty-sixth linear driver P1 drives the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 to move towards the piston rod assembly A at the working end of the rotary worktable B and grab the piston rod assembly A, and then the twenty-seventh linear driver P2 and the twenty-eighth linear driver P3 work together to drive the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 to move upwards synchronously, so that the piston rod assembly A is pulled out upwards from the working end of the rotary worktable B;

then the twenty-sixth linear driver P1, the twenty-seventh linear driver P2 and the twenty-eighth linear driver P3 are reset, the second rotary driver P4 drives the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 to rotate 90 degrees, so that the piston rod assembly A is turned to be in a horizontal state, and then the twenty-seventh linear driver P2 and the twenty-eighth linear driver P3 work together to drive the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 to synchronously move downwards, so that the piston rod assembly A is horizontally placed at the working end of the sorting mechanism Q;

the twenty-ninth linear driver P4c is a single-shaft single-rod cylinder, the twenty-ninth linear driver P4c drives the second crank P4b to rotate on the second rotary table P4a, the second crank P4b can rotate in the range of 0 to 90 degrees by setting the stroke of the twenty-ninth linear driver P4c, and further the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 can be driven by the second rotary driver P4 to rotate in the range of 0 to 90 degrees, and the second piston rod mechanical clamping jaw P5 and the third piston rod mechanical clamping jaw P6 are both finger cylinders provided with clamping jaws for clamping the piston rod assembly a.

Referring to fig. 12 and 15, the sorting mechanism Q includes a second upright Q1, a sorting deck Q2, a waste bin Q3, a third crank Q4 and a thirty-third linear driver Q5, the second upright Q1 is vertically arranged, the sorting deck Q2 is rotatably mounted at the top end of the second upright Q1, the waste bin Q3 is fixedly mounted at the side of the second upright Q1 and is positioned right below one end of the sorting deck Q2, and the other end of the sorting deck Q2 is opposite to the working end of the stepping discharging deck D;

the rotating shaft of the third crank Q4 is fixedly arranged on the rotating shaft of the sorting table Q2, two ends of a thirty-first linear driver Q5 are respectively hinged with the working ends of the second upright post Q1 and the third crank Q4, and a thirty-first linear driver Q5 is electrically connected with the controller.

The controller signals the thirty-third linear actuator Q5 to operate to drive the third crank Q4 to rotate so that the sorting deck Q2 rotates toward the work end of the scrap box Q3 or step discharge deck D so that the piston rod assembly a with the piston rod discharge robot P disposed on the sorting deck Q2 moves into the work end of the step discharge deck D or the scrap box Q3.

Referring to fig. 14, the piston mounting mechanism L includes a rotary table B and a piston rod assembly a fixed at a working end of the rotary table B, a piston vibration tray L1, a piston linear feeder L2, a piston feeding table L3 and a piston feeding manipulator L4 are arranged beside the rotary table B, and a piston centering mechanism L5 is fixedly mounted on a non-working surface of the rotary table B;

the discharge port of the piston vibration disc L1 is communicated with the feed port of the piston linear feeder L2, the discharge port of the piston linear feeder L2 is communicated with the feed port of the piston feeding table L3, the piston feeding manipulator L4 is arranged above the piston feeding table L3, and the working end of the piston feeding manipulator L4 is arranged right above the discharge port of the piston feeding table L3; the piston feeding platform L3 is arranged on the side of the working end of the rotary workbench B, and the working direction of the piston feeding manipulator L4 is towards the working end of the rotary workbench B.

When material is taken, the piston vibrating disc L1 and the piston linear feeder L2 continuously transmit the piston A7 to the material inlet of the piston feeding table L3, the piston A7 stays in the piston feeding table L3 and blocks the subsequent piston A7 from entering, then the twentieth linear driver L4a and the twenty-first linear driver L4b drive the second material taking column L4d to be inserted into the middle of the inner ring of the piston A7, and the second finger cylinder L4c drives the second material taking column L4d to expand and clamp the inner ring of the piston A7, so that grabbing is completed;

during feeding, the third finger cylinder L5c drives the centering clamping block L5d to move inwards from two sides and clamp the piston rod A1 in the middle, the semicircular holes L5d1 of the two centering clamping blocks L5d are spliced into a finished circular hole, then the L4 clamps the piston A7 to be close to the centering clamping block L5d, the second material pushing slider L4h abuts against the top end of the centering clamping block L5d under the resilience force of the second spring L4g, the piston A7 is inserted into the top end of the piston rod A1 through centering of the chamfer L5d2 and the semicircular hole L5d1, then the third finger cylinder L5c drives the centering clamping block L5d to move towards two sides and return to the position through the twelfth linear driver L5b, and the second material pushing slider L4h drives the piston A7 to move downwards under the resilience force of the second spring L4g, so that the piston A7 is pressed downwards to the installation position;

the subsequent piston a7 continues into the piston loading table L3 under the combined action of the piston vibratory pan L1 and the piston linear feeder L2.

Referring to fig. 17, a piston feeding manipulator L4 includes a twentieth linear actuator L4a, a twenty-first linear actuator L4B and a piston feeder, the working direction of the twentieth linear actuator L4a is vertically set, the twenty-first linear actuator L4B is fixedly installed at the working end of the twentieth linear actuator L4a, the working direction of the twenty-first linear actuator L4B is horizontally set toward the rotary worktable B, the piston feeder is fixedly installed at the working end of the twenty-first linear actuator L4B, and the working end of the piston feeder is vertically set downward.

The twentieth linear driver L4a and the twenty-first linear driver L4B are both single-shaft single-rod cylinder sliding tables, the twentieth linear driver L4a drives the twenty-first linear driver L4B to drive the piston feeder to vertically move downwards so as to clamp the guide A2 from the discharge port of the piston feeding table L3, then the twentieth linear driver L4a resets, the twenty-first linear driver L4B drives the piston feeder to move to the position right above the working end of the rotary working table B, then the twentieth linear driver L4a drives the twenty-first linear driver L4B to drive the piston feeder to vertically move downwards, and therefore the guide A2 clamped by the piston feeder is sleeved on the piston rod A1 clamped by the working end of the rotary working table B.

Referring to fig. 18, the piston loader comprises a second finger cylinder L4c, the second finger cylinder L4c is fixedly installed at the working end of the horizontal linear actuator;

two working ends of the second finger cylinder L4c are respectively and fixedly provided with two second material taking columns L4d which are symmetrical to each other, the second material taking columns L4d are semi-cylindrical, and the second material taking columns L4d are folded into a complete cylinder in an initial state;

when material is taken, the second finger cylinder L4c drives the second material taking column L4d to close, the second material taking column L4d is inserted into the inner ring of the piston A7, and then the second finger cylinder L4c drives the second material taking column L4d to separate so as to clamp the inner ring of the piston A7, so that the material loading device can grab the piston A7;

when feeding, the twentieth linear driver L4a and the twenty-first linear driver L4b drive the feeder to move to the top end of the piston rod a1, and make the second material taking column L4d abut against the top end of the piston rod a1, and then the second finger cylinder L4c drives the second material taking column L4d to close, and the piston a7 loses the friction force given by the second material taking column L4d, so that the piston a7 naturally falls into the installation position of the piston rod a 1.

The piston feeder further comprises a fourth fixed block L4e, the fourth fixed block L4e is fixedly installed at a fixed part of a second finger cylinder L4c, two second pushing block sliding columns L4f which are parallel to each other are installed on the fourth fixed block L4e in a sliding mode, a second sliding column stopper L4f1 which prevents the second pushing block sliding column L4f from separating from the fourth fixed block L4e downwards is installed at the top end of the second pushing block sliding column L4f, a second pushing slider L4h is fixedly installed at the bottom end of the second pushing block sliding column L4f, and a second spring L4g of which two ends are respectively abutted against the fourth fixed block L4e and the second pushing slider L4h is sleeved on the second pushing block sliding column L4 f;

the second material pushing slider L4h is provided with a material taking post through hole through which the second material taking post L4d can pass, the second material pushing slider L4h is sleeved outside the second material taking post L4d, and the second material pushing slider L4h is located below the fourth fixing block L4e in the initial state.

When material is taken, the second material pushing slider L4h abuts against the piston A7 and overcomes the resilience force of the second spring L4g to move vertically upwards along the L4f, and the second material taking column L4d penetrates through a material taking column through hole in the second material pushing slider L4h and is inserted into the inner ring of the piston A7;

during feeding, the second finger cylinder L4c drives the second material taking column L4d to close, the piston A7 loses the friction force given by the second material taking column L4d, so that the second spring L4g can drive the second material pushing slider L4h to vertically move downwards along the L4f through the resilience force of the second spring L4g, and the opening pad is pushed into the mounting position at the top end of the piston rod A1.

Referring to fig. 19, a piston centering mechanism L5 includes a centering device support L5a, a twenty-second linear actuator L5B, and a third finger cylinder L5c, wherein the centering device support L5a is fixedly installed on a non-working surface of a rotary table B, the twenty-second linear actuator L5B is fixedly installed at a top end of a centering device support L5a, a working direction of the twenty-second linear actuator L5B is horizontally arranged toward a working end of the rotary table B, the third finger cylinder L5c is fixedly installed at a working end of the twenty-second linear actuator L5B, two symmetrical centering clamping blocks L5d are respectively installed at two working ends of the third finger cylinder L5c, and a semi-circular hole L5d1 in clearance fit with a piston is opened on the centering clamping block L5 d.

The piston A7 is a cylinder, the second material taking column L4d can only be inserted into the upper half part of the inner ring of the piston A7, and the piston A7 and the second material taking column L4d cannot be ensured to be coaxial, so before the piston A7 is installed, the piston A7 needs to be centered, the twenty-second linear driver L5B drives the third finger cylinder L5c to move towards the working end of the rotary table B, then the third finger cylinder L5c drives the centering clamping block L5d to move inwards from two sides and clamp the piston rod A1 in the middle, the semicircular holes L5d1 of the two centering clamping blocks L5d are spliced into a finished circular hole, so that circular holes coaxial with the piston rod A1 and the second material taking column L4d are formed, and the piston A7 can be inserted into the top end of the piston rod A1 in a centered mode along the circular hole.

The top end of the semicircular hole L5d1 is provided with a chamfer L5d 2.

The chamfer L5d2 is used to guide the piston a7 smoothly into the middle of the semi-circular bore L5d 1.

In the working state, the bottom surface of the centering clamping block L5d is lower than the installation position of the piston, and the top surface of the centering clamping block L5d is higher than the installation position of the piston.

During installation, the third finger cylinder L5c drives the centering clamping block L5d to move inwards from two sides and clamp the piston rod A1 in the middle, the two semicircular holes L5d1 are spliced into a finished circular hole, then the piston feeding manipulator L4 clamps the piston A7 to be close to the centering clamping block L5d, the second material pushing slider L4h abuts against the top end of the centering clamping block L5d under the resilience force of the second spring L4g, the piston A7 is guided and centered by the chamfer L5d2 and the semicircular hole L5d1 and inserted into the top end of the piston rod A1, then the third finger cylinder L5c drives the centering clamping block L5d to move towards two sides and return to the position through the second twelve-line driver L5b, and the second material pushing slider L4h drives the piston A7 to move downwards under the resilience force of the second spring L4g so as to press the piston A7 downwards to the installation position.

Referring to fig. 20 to 23, a detection mechanism N includes a rotary table B and a controller, a compactor support N1 is disposed beside the rotary table B, a compacting mechanism N2 is fixedly mounted on the compactor support N1, a plug gauge support N3 is fixedly mounted on a non-working surface of the rotary table B, a pneumatic plug gauge N4 and a stroke detector N5 for detecting a stroke of the pneumatic plug gauge N4 are fixedly mounted on the plug gauge support N3, a working direction of the compacting mechanism N2 is vertically downward, a working end of the compacting mechanism N2 is located right above a working end of the rotary table B, and a working direction of the pneumatic plug gauge N4 is horizontally disposed toward the working end of the rotary table B.

The piston rod assembly A which is completely assembled moves to the position right below a pressing mechanism N2 through a rotary workbench B, the pressing mechanism N2 presses a gasket A8 mounted at the top end of the piston rod assembly A downwards, then a pneumatic plug gauge N4 horizontally moves towards the gasket A8, if the piston rod assembly A is completely assembled, the pneumatic plug gauge N4 contacts with the gasket A8 to stop, the stroke of the pneumatic plug gauge N4 detected by a stroke detector N5 is correct, if the piston rod assembly A is not completely assembled, the pneumatic plug gauge N4 cannot contact with the gasket A8, the stroke of the pneumatic plug gauge N4 detected by a stroke detector N5 is incorrect, and after the detection, the pressing mechanism N2 and the pneumatic plug gauge N4 reset.

Referring to fig. 24 to 25, the pressing mechanism N2 includes a twenty-third linear actuator N2a, a second movable plate N2B and a third sleeve N2c, the twenty-third linear actuator N2a is fixedly mounted at the top end of the presser bracket N1, the working direction of the twenty-third linear actuator N2a is vertically and downwardly arranged, the second movable plate N2B is horizontally arranged, the twenty-third linear actuator N2a is in transmission connection with the second movable plate N2B, the third sleeve N2c is fixedly mounted at the bottom end of the second movable plate N2B, and the third sleeve N2c is located right above the working end of the rotary table B.

When the gasket A8 needs to be pressed, the twenty-third linear driver N2a operates to move the second movable plate N2b vertically downward, so that the third sleeve N2c abuts against the top end of the gasket A8.

The twenty-third linear actuator N2a includes a first single-shaft single-rod cylinder N2a1, a guide sleeve N2a2 and a guide post N2a3, the first single-shaft single-rod cylinder N2a1 and the guide sleeve N2a2 are both vertically mounted on the top end of the presser support N1, the working end of the first single-shaft single-rod cylinder N2a1 vertically penetrates through the presser support N1 and the second movable plate N2b, the second movable plate N2b is slidably connected with the working end of the first single-shaft single-rod cylinder N2a1, the guide post N2a3 is slidably mounted in the guide sleeve N2a2, the bottom end of the guide post N2a3 penetrates through the presser support N1 and is fixedly connected with the second movable plate N2b, and the first single-shaft single-rod cylinder N2a1 is electrically connected with the controller.

A first spring pressing block N2a4 located above the second movable plate N2b is fixedly mounted on the first single-shaft single-rod cylinder N2a1, a movable plate stopper N2a5 abutting against the bottom end of the second movable plate N2b is fixedly mounted at the bottom end of the first single-shaft single-rod cylinder N2a1, and a third spring N2a6 with two ends abutting against the first spring pressing block N2a4 and the second movable plate N2b is sleeved on a working shaft of the first single-shaft single-rod cylinder N2a 1.

The guide sleeve N2a2 and the guide post N2a3 are used for guiding, and simultaneously preventing the second movable plate N2b from rotating;

in a non-working state, the first single-shaft single-rod cylinder N2a1 drives the movable plate stopper N2a5 to move upwards, so as to drive the second movable plate N2b and the third sleeve N2c to move upwards to separate from the piston rod a 1;

in an operating state, the first uniaxial single-rod cylinder N2a1 drives the first spring pressing block N2a4, the movable plate stopper N2a5 and the second movable plate N2b to move downwards together, when the third sleeve N2c abuts against the top end of the gasket a8, the second movable plate N2b and the third sleeve N2c stop moving, the first uniaxial single-rod cylinder N2a1 continues to drive the first spring pressing block N2a4 and the movable plate stopper N2a5 to move downwards against the resilience of the Na6, and at this time, the pressing force of the pressing mechanism N2 is equal to the resilience of the third spring N2a 6.

The pressing mechanism N2 further comprises a fifth photoelectric switch N2d and a third adjustable bracket N2e, the fifth photoelectric switch N2d is fixedly installed on the guide post N2a3, the third adjustable bracket N2e is installed on the side surface of the N1 in a height-adjustable mode, the fifth photoelectric switch N2d is electrically connected with the controller, and in the working state, the working end of the fifth photoelectric switch N2d is right opposite to the third adjustable bracket N2 e.

When the third sleeve N2c goes up and down, the guide post N2a3 goes up and down, and when the guide post N2a3 senses the third adjustable bracket N2e, the guide post N2a3 sends a signal to the controller, and the controller sends a signal to the first single-shaft single-rod cylinder N2a1 to reset the first single-shaft single-rod cylinder N2a 1.

Two oblong holes which extend along the vertical direction and are parallel to each other are formed in the third adjustable support N2e, and the third adjustable support N2e is fixedly connected with the impactor support N1 through the oblong holes by bolts.

The staff unscrews the bolt and can make third adjustable support N2e slide about vertical as the spout through its slotted hole, screws up the height that the bolt can fix third adjustable support N2e to make the stroke of first unipolar single-pole cylinder N2a1 accurately adjustable.

Referring to fig. 26 to 28, a plug gauge bracket N3 includes a first upright post N3a and a second fixing plate N3B, the first upright post N3a is fixedly installed on a non-working surface of a rotary table B, the second fixing plate N3B is vertically installed on a side surface of the first upright post N3a, a plug gauge slide rail N3c is arranged on a side surface of the second fixing plate N3B, a working direction of the plug gauge slide rail N3c is horizontally arranged, and a plug gauge slide block N3d is slidably installed on a plug gauge slide rail N3 c;

referring to fig. 26 to 28, the pneumatic plug gauge N4 includes a twenty-fourth linear actuator N4a and a plug gauge N4B, the twenty-fourth linear actuator N4a is fixedly mounted on a side surface of the second fixing plate N3B, the plug gauge N4B is fixedly mounted on a surface of the plug gauge slide block N3d facing to the working end of the rotary table B, and the twenty-fourth linear actuator N4a is in transmission connection with the plug gauge slide block N3 d.

The plug gauge N4b is a plug gauge with a horizontal end part and parallel to the gasket A8, the twenty-fourth linear driver N4a drives the plug gauge N4b to move towards the gasket A8, and whether the split pad A5, the piston ring A6, the piston A7 and the gasket A8 are completely installed or not is judged through the moving stroke of the plug gauge N4 b.

The twenty-fourth linear actuator N4a comprises a second single-shaft single-rod cylinder N4a1, a second spring pressing block N4a2, a second spring N4a3 and a plug gauge slide block N4a4, the second single-shaft single-rod cylinder N4a1 is fixedly arranged on the side surface of a second fixing plate N3b, the working shaft of the second single-shaft single-rod cylinder N4a1 penetrates through the plug gauge slide block N3d and extends to the outer side of a first upright post N3a, the second spring pressing block N4a2 and the plug gauge slide block N4a4 are both arranged on the working shaft of the second single-shaft single-rod cylinder N4a1, the second spring pressing block N4a2 is installed on one side, close to the second single-shaft single-rod cylinder N4a1, of the plug gauge sliding block N3d, the plug gauge sliding block stop block N4a4 is installed on one side, far away from the second single-shaft single-rod cylinder N4a1, of the plug gauge sliding block N3d, the second spring N4a3 is sleeved on a working shaft of the second single-shaft single-rod cylinder N4a1, two ends of the second spring N4a3 abut against the second spring pressing block N4a2 and the plug gauge sliding block N3d respectively, and the second single-shaft single-rod cylinder N4a1 is electrically connected with the controller.

The second uniaxial single-rod cylinder N4a1 drives the second spring pressing block N4a2 to move towards the working end of the rotary table B in a working mode, the second spring N4A3 is compressed, so that the plug gauge sliding block N3d is driven by resilience of the second uniaxial single-rod cylinder N4a1 to drive the plug gauge N4B to move towards the gasket A8, when the plug gauge N4B abuts against the gasket A8, the plug gauge N4B stops moving, the second uniaxial single-rod cylinder N4a1 drives the second spring pressing block N4a2 to continuously move forwards by overcoming the resilience of the second spring N4A3, and therefore the pressure of the plug gauge N4B is prevented from damaging the gasket A8 until the second uniaxial single-rod cylinder N4a1 reaches the end of a stroke, and the second uniaxial single-rod cylinder N4a1 drives the plug gauge sliding block N3 A3 d to drive the plug gauge N4a 4B to reset through the plug gauge sliding block N4a4 during resetting.

The second fixing plate N3b is provided with a first slide rail N3b1 extending along the horizontal direction;

referring to fig. 26 to 28, the stroke detector N5 includes a sixth photoelectric switch N5a, a seventh photoelectric switch N5b, a fourth adjustable bracket N5c, and a fifth adjustable bracket N5d, wherein the fourth adjustable bracket N5c and the fifth adjustable bracket N5d are slidably mounted in the first slide rail N3b1, the sixth photoelectric switch N5a and the seventh photoelectric switch N5b are fixedly mounted on the plug gauge slide block N3d, and the sixth photoelectric switch N5a and the seventh photoelectric switch N5b are electrically connected to the controller.

In the initial state, the working end of the sixth photoelectric switch N5a is right opposite to the fourth adjustable bracket N5c, and the working end of the seventh photoelectric switch N5b is right opposite to the fifth adjustable bracket N5 d;

in the working state, the working end of the sixth photoelectric switch N5a is right opposite to the fifth adjustable support N5 d.

A second single-shaft single-rod cylinder N4a1 works to drive a plug gauge slide block N3d to drive a plug gauge N4b to move towards the direction of a gasket A8, when the piston rod assembly A is completely assembled, the plug gauge N4b abuts against the side face of the gasket A8, then the plug gauge N4b and the plug gauge slide block N3d stop, and a sixth photoelectric switch N5a stops between a fourth adjustable bracket N5c and a fifth adjustable bracket N5 d;

when the piston rod assembly A is not completely assembled, the plug gauge N4b cannot abut against the gasket A8 and the plug gauge sliding block N3d to continue to advance, the sixth photoelectric switch N5a sends a signal to the controller after sensing the fifth adjustable support N5d, and the controller sends a signal to the second single-shaft single-rod air cylinder N4a1 to enable the second single-shaft single-rod air cylinder N4a1 to reset.

Referring to fig. 29 to 33, the air blowing cleaning mechanism R includes a stepping discharging platform D and a controller, a first lifting support R1 is fixedly installed on one side of the stepping discharging platform D, a second lifting support R2 is fixedly installed on the other side of the stepping discharging platform D, working directions of the first lifting support R1 and the second lifting support R2 are both vertically upward, a working direction of the third lifting support R3 is vertically downward, a third lifting support R3 is arranged above the stepping discharging platform D, the third lifting support R3 straddles over the stepping discharging platform D, a driving wheel pair R4 is rotatably installed at a working end of the first lifting support R1, a driven wheel pair R5 is rotatably installed at a working end of the second lifting support R2, an air blowing nozzle R6 is fixedly installed at a working end of the third lifting support R3, and working shafts of the driving wheel pair R4 and the driven wheel pair R5 are coaxial;

the device also comprises a high-pressure air source which is communicated with the input end of the blowing nozzle R6;

the automatic material feeding device is characterized by further comprising an eighth photoelectric switch R7, the eighth photoelectric switch R7 is fixedly installed on the stepping discharging table D, the working end of the eighth photoelectric switch R7 is vertically arranged upwards, the distance between the working end of the eighth photoelectric switch R7 and the working end of the driving wheel pair R4 is equal to the multiple of the feeding distance of the stepping discharging table D, and the first lifting support R1, the second lifting support R2, the third lifting support R3, the driving wheel pair R4, the air blowing nozzle R6 and the eighth photoelectric switch R7 are electrically connected with the controller.

The stepping discharging platform D intermittently transmits the piston rod assembly A outwards, and as the distance between the working end of the eighth photoelectric switch R7 and the working end of the driving wheel pair R4 is equal to the multiple of the feeding distance of the stepping discharging platform D, when the eighth photoelectric switch R7 senses the piston rod assembly A, a piston rod assembly A is inevitably arranged right above the working end of the driving wheel pair R4;

an eighth photoelectric switch R7 senses that a piston rod assembly A sends a signal to a controller, the controller sends a signal to a stepping unloading platform D, a first lifting support R1, a second lifting support R2, a third lifting support R3, a driving wheel pair R4 and a blowing nozzle R6, the stepping unloading platform D stops working, the first lifting support R1 and the second lifting support R2 respectively drive the driving wheel pair R4 and a driven wheel pair R5 to vertically move upwards, meanwhile, the third lifting support R3 drives a blowing nozzle R6 to vertically move downwards, so that the piston rod assembly A is lifted to move to be right below the blowing nozzle R6, and the driving wheel pair R4 drives the piston rod assembly A to rotate while the blowing nozzle R6 blows air to the piston rod assembly A, so that each angle of the piston rod assembly A is clean;

after cleaning, the first lifting support R1, the second lifting support R2 and the third lifting support R3 reset, the driving wheel pair R4 and the driven wheel pair R5 are closed, the piston rod assembly A returns to the working end of the stepping discharging table D, and the controller sends a signal to the stepping discharging table D to enable the stepping discharging table D to recover working.

Referring to fig. 34 to 35, the first lifting bracket R1 includes a thirty-first linear actuator R1a, a first horizontal plate R1b and a first vertical plate R1c, the thirty-first linear actuator R1a is fixedly installed at the outer side of the working surface of the step discharging platform D, the working direction of the thirty-first linear actuator R1a is vertically upward, the first horizontal plate R1b is fixedly installed at the working end of the thirty-first linear actuator R1a, the first vertical plate R1c is fixedly installed at the side of the first horizontal plate R1b and located at the outer side of the working surface of the step discharging platform D, and the driving wheel pair R4 is rotatably installed at the top end of the first vertical plate R1 c.

The thirty-first linear actuator R1a is a three-axis three-rod cylinder, and the thirty-first linear actuator R1a is operated to drive the first horizontal plate R1b to move downward and drive the first vertical plate R1c to move upward together, so that the driving wheel pair R4 can lift or lower the piston rod assembly a.

The second lifting bracket R2 comprises a thirty-second linear driver R2a, a second horizontal plate R2b and a second vertical plate R2c, the thirty-second linear driver R2a is fixedly installed outside the working surface of the stepping discharging platform D, the working direction of the thirty-second linear driver R2a is vertically arranged downwards, the second horizontal plate R2b is fixedly installed at the working end of the thirty-second linear driver R2a, the second vertical plate R2c is fixedly installed at the side surface of the second horizontal plate R2b and is located inside the working surface of the stepping discharging platform D, and the driven wheel pair R5 is rotatably installed at the top end of the second vertical plate R2 c.

The thirty-second linear actuator R2a is a two-shaft and two-rod cylinder, and the thirty-second linear actuator R2a is operated to drive the second horizontal plate R2b to move downwards so as to drive the second vertical plate R2c to move downwards together, so that the driven wheel pair R5 can lift or lower the piston rod assembly A.

The third lifting bracket R3 comprises a portal frame R3a, a thirty-third linear driver R3b and an air blowing nozzle bracket R3c, the air blowing nozzle bracket R3c is spanned right above the stepping discharging table D, the thirty-third linear driver R3b is fixedly installed at the top end of the air blowing nozzle bracket R3c, the working direction of the thirty-third linear driver R3b is vertically downward arranged, the air blowing nozzle bracket R3c is fixedly installed at the bottom end of the thirty-third linear driver R3b, and the air blowing nozzle R6 is fixedly installed inside the air blowing nozzle bracket R3 c.

And a thirty-third linear driver R3b is a double-shaft double-rod cylinder, and the thirty-third linear driver R3b drives the blowing nozzle support R3c to drive the blowing nozzle R6 to vertically move downwards, so that the blowing nozzle R6 can be closer to the piston rod assembly A.

The driving wheel pair R4 comprises a pair of long shafts R4a which penetrate through the first vertical plate R1c and are rotatably installed at the top end of the first vertical plate R1c, one end, facing the stepping discharging platform D, of each long shaft R4a extends to the inner side of the working face of the stepping discharging platform D, one end, facing the stepping discharging platform D, of each long shaft R4a is fixedly provided with a first rotating wheel R4b, one face, facing away from the stepping discharging platform D, of the first vertical plate R1c is fixedly provided with a third servo motor R4c, and the third servo motor R4c and the long shafts R4a are connected through synchronous belt transmission.

The third servomotor R4c is operated to rotate the long shaft R4a, so as to rotate the first wheel R4b at the same speed and in the same direction, so that the piston rod assembly a can rotate between the two first wheels R4 b.

The driven wheel pair R5 includes a pair of stub shafts R5a extending through the second vertical plate R2c and rotatably mounted on the top end of the second vertical plate R2c, and the second wheels R5b are rotatably mounted on the stub shafts R5 a.

When the driven wheel pair R5 lifts the piston rod assembly A, the piston rod assembly A is positioned between the two second rotating wheels R5b, so that the piston rod assembly A can rotate in any direction without limitation.

The working principle of the invention is as follows:

the controller is used for receiving and sending signals so as to control the rotary workbench B, the stepping unloading platform D, the piston rod unloading manipulator P, the opening pad mounting mechanism J, the piston ring mounting mechanism K, the piston mounting mechanism L, the gasket mounting mechanism M, the detection mechanism N, the spin riveting mechanism O, the piston rod unloading manipulator P, the sorting mechanism Q and the blowing cleaning mechanism R to work in sequence, after the gasket mounting mechanism M finishes detection, a detection result is sent to the controller, the controller sends the detection result to the sorting mechanism Q, and the sorting mechanism Q selectively moves the piston rod assembly A to a waste box or the working end of the stepping unloading platform D according to the detection result;

the rotary worktable B is used for driving a piston rod A1 occluded at the working end of the rotary worktable B to pass through each station in sequence;

the open pad mounting mechanism J is used for mounting an open pad A5, the piston ring mounting mechanism K is used for mounting a piston ring A6, the piston mounting mechanism L is used for mounting a piston A7, and the gasket mounting mechanism M is used for mounting a gasket A8;

the detection mechanism N is used for detecting the piston rod assembly A and detecting whether the piston rod assembly A is neglected or misassembled;

the rotary riveting mechanism O is used for carrying out rotary riveting on the piston rod assembly A, and the piston rod unloading manipulator P takes down the piston rod assembly A subjected to rotary riveting and puts the piston rod assembly A into the sorting mechanism Q;

the sorting mechanism Q moves qualified products to the stepping discharging table D and moves unqualified products to a waste box according to the detection result of the detection mechanism N;

the stepping discharging table D drives the piston rod assembly A to move forward towards the blowing cleaning mechanism R, and the blowing cleaning mechanism R works to blow and clean the piston rod assembly A, so that the assembly of the piston rod assembly A is completed.

It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A piston assembly mounting device of a gas spring piston rod assembly is characterized by comprising a rotary worktable (B), a stepping discharging table (D) and a controller which are arranged adjacently, and is characterized in that a piston rod discharging manipulator (P) and a sorting mechanism (Q) are arranged between the rotary worktable (B) and the stepping discharging table (D), an open pad mounting mechanism (J), a piston ring mounting mechanism (K), a piston mounting mechanism (L), a gasket mounting mechanism (M), a detection mechanism (N) and a spin riveting mechanism (O) are sequentially arranged along the working direction of the rotary worktable (B), and a blowing cleaning mechanism (R) is fixedly mounted on the stepping discharging table (D);

the rotary worktable (B), the stepping unloading platform (D), the piston rod unloading manipulator (P), the opening pad mounting mechanism (J), the piston ring mounting mechanism (K), the piston mounting mechanism (L), the gasket mounting mechanism (M), the detection mechanism (N), the spin riveting mechanism (O), the piston rod unloading manipulator (P), the sorting mechanism (Q) and the blowing cleaning mechanism (R) are all electrically connected with the controller;

the piston rod unloading manipulator (P) comprises a twenty-sixth linear driver (P1), a twenty-seventh linear driver (P2), a twenty-eighth linear driver (P3), a second rotary driver (P4) and a second piston rod mechanical clamping jaw (P5);

the working direction of a twenty-sixth linear driver (P1) is horizontally arranged towards the rotary worktable (B), and a twenty-seventh linear driver (P2) is fixedly arranged at the working end of the twenty-sixth linear driver (P1);

the working direction of the twenty-seventh linear driver (P2) is vertically downward, the working direction of the twenty-eighth linear driver (P3) is vertically upward, and the working end of the twenty-eighth linear driver (P3) is fixedly connected with the working end of the twenty-seventh linear driver (P2);

the second rotary driver (P4) is fixedly connected with the twenty-eighth linear driver (P3), the rotating shaft of the second rotary driver (P4) is horizontally arranged, and the working end of the second rotary driver (P4) can rotate in the range of 0-90 degrees;

the second piston rod mechanical clamping jaw (P5) and the third piston rod mechanical clamping jaw (P6) are arranged in parallel and are fixedly arranged at the working end of the second rotary driver (P4);

the second rotary driver (P4) comprises a second rotary table (P4a) fixedly connected with a twenty-eighth linear driver (P3), a second crank (P4b) and a twenty-ninth linear driver (P4c) are rotatably mounted on the second rotary table (P4a), the rotating shafts of the second crank (P4b) and the twenty-ninth linear driver (P4c) are horizontally arranged, the working end of the twenty-ninth linear driver (P4c) is hinged with the free end of the second crank (P4b), and the second piston rod mechanical clamping jaw (P5) is fixedly mounted on the rotating shaft of the second crank (P4 b).

2. The piston assembly mounting device of a gas spring piston rod assembly according to claim 1, characterized in that the open pad mounting mechanism (J) and the piston ring mounting mechanism (K) each comprise a vibrating disk, a linear feeder, a feeding table and a feeding manipulator, wherein a discharge port of the vibrating disk is communicated with a feed port of the linear feeder, a discharge port of the linear feeder is communicated with a feed port of the feeding table, the feeding manipulator is arranged above the feeding table, and a working end of the feeding manipulator is arranged right above the discharge port of the feeding table; the feeding table is arranged beside the working end of the rotary working table (B), and the working direction of the feeding manipulator is arranged towards the working end of the rotary working table (B).

3. The piston assembly mounting device for the gas spring piston rod assembly according to claim 2, wherein the feeding manipulator comprises a vertical linear driver, a horizontal linear driver and a feeder, the working direction of the vertical linear driver is vertically arranged, and the horizontal linear driver is fixedly mounted at the working end of the vertical linear driver; the working direction of the horizontal linear driver is horizontally arranged towards the rotary working table (B), the feeding device is fixedly arranged at the working end of the horizontal linear driver, and the working end of the feeding device is vertically arranged downwards.

4. A piston assembly mounting assembly for a gas spring piston rod assembly according to claim 3, wherein the loader includes a first finger cylinder (J4c) and a second mounting block (J4e), the first finger cylinder (J4c) being fixedly mounted to the working end of the horizontal linear actuator, the second mounting block (J4e) being fixedly mounted to the mounting portion of the first finger cylinder (J4 c);

the working ends of the first finger cylinders (J4c) are respectively and fixedly provided with two first material taking columns (J4d) which are symmetrical to each other, the first material taking columns (J4d) are semi-cylindrical, and the first material taking columns (J4d) are folded into a complete cylinder in the initial state;

two first pushing block sliding columns (J4f) which are parallel to each other are slidably mounted on the second fixing block (J4e), a first sliding column stop block (J4f1) which prevents the first pushing block sliding column (J4f) from being separated from the second fixing block (J4e) downwards is mounted at the top end of the first pushing block sliding column (J4f), a first pushing slider (J4h) is fixedly mounted at the bottom end of the first pushing block sliding column (J4f), and a first spring (J4g) with two ends respectively abutted against the second fixing block (J4e) and the first pushing slider (J4h) is sleeved on the first pushing block sliding column (J4 f);

the first material pushing slider (J4h) is provided with a material taking column through hole through which the first material taking column (J4d) can pass, the first material pushing slider (J4h) is sleeved on the outer side of the first material taking column (J4d), and the first material pushing slider (J4h) is located below the second fixing block (J4e) in an initial state.

5. The piston assembly mounting device of the gas spring piston rod assembly as claimed in claim 3, wherein the loader comprises a third fixing block (K1), a material taking fork (K2), a nineteenth linear driver (K3) and a second material pushing block (K4), the third fixing block (K1) is fixedly mounted at the working end of the horizontal linear driver, the material taking fork (K2) is fixedly mounted at the bottom end of the third fixing block (K1), the nineteenth linear driver (K3) is fixedly mounted at the side surface of the third fixing block (K1), the output direction of the nineteenth linear driver (K3) is vertically arranged downwards, the second material pushing block (K4) is fixedly mounted at the bottom end of the nineteenth linear driver (K3), the second material pushing block (K4) is provided with a material taking fork through hole for the material taking fork (K2) to pass through, and the second material pushing block (K4) is sleeved at the outer side of the material taking fork (K2), the second pusher block (K4) is initially positioned above the working end of the take-off fork (K2).

6. The piston assembly mounting device of a gas spring piston rod assembly according to claim 5, characterized in that the material taking fork (K2) is in the shape of a vertically arranged flat plate, the width of the middle end of the material taking fork (K2) is larger than the diameter of a piston ring, the width of the bottom end of the material taking fork (K2) is smaller than the diameter of the piston ring, the middle end and the bottom end of the material taking fork (K2) are in smooth transition, a slotted hole (K2a) vertically extending upwards from the bottom end of the material taking fork (K2) is arranged in the middle of the material taking fork (K2), and the inner wall of the slotted hole (K2a) is in clearance fit with the piston rod.

7. A piston assembly mounting arrangement for a gas spring piston rod assembly according to claim 1, it is characterized in that the spin riveting mechanism (O) comprises a spin riveter bracket (O1), a spin riveter (O2), a first spin stopper (O3) and a second spin stopper (O4), the spin riveter bracket (O1) is arranged beside the working end of the rotary worktable (B), the spin riveter (O2) is fixedly arranged at the top end of the spin riveter bracket (O1), the working end of the spin riveter (O2) is vertically and downwardly arranged, the working end of the spin riveter (O2) is positioned right above the working end of the rotary worktable (B), the first spin stopper (O3) and the second spin stopper (O4) are both arranged in the spin riveter bracket (O1), the first spin stopper (O3) is arranged right above the second spin stopper (O4) in the working state, the working ends of the first rotation stopper (O3) and the second rotation stopper (O4) are both positioned right below the working end of the rotary table (B).

8. A piston assembly mounting arrangement for a gas spring piston rod assembly according to claim 7, the automatic riveting machine is characterized in that the first rotation stopping device (O3) comprises a twenty-fifth linear driver (O3a), a fourth finger cylinder (O3B) and a second sliding rail (O3d), the twenty-fifth linear driver (O3a) is fixedly installed inside a riveting machine support (O1), the working direction of the twenty-fifth linear driver (O3a) faces to the working end of the rotary worktable (B), the fourth finger cylinder (O3B) and the second sliding rail (O3d) are fixedly installed at the working end of the twenty-fifth linear driver (O3a), the working direction of the second sliding rail (O3d) is parallel to the working direction of the fourth finger cylinder (O3B), two working ends of the fourth finger cylinder (O3B) are respectively provided with rotation stopping clamping jaws (O3c) which are symmetrical to each other, and the rotation stopping clamping jaws (O3c) are connected with the second sliding rail (O3d) in a sliding mode.

9. The piston assembly mounting device of a gas spring piston rod assembly according to claim 1, characterized in that the sorting mechanism (Q) comprises a second upright (Q1), a sorting platform (Q2), a waste bin (Q3), a third crank (Q4) and a thirty-third linear actuator (Q5), the second upright (Q1) is vertically arranged, the sorting platform (Q2) is rotatably mounted at the top end of the second upright (Q1), the waste bin (Q3) is fixedly mounted at the side of the second upright (Q1) and is positioned right below one end of the sorting platform (Q2), and the other end of the sorting platform (Q2) is right opposite to the working end of the stepping discharging platform (D);

the rotating shaft of the third crank (Q4) is fixedly arranged on the rotating shaft of the sorting table (Q2), two ends of the thirty-first linear driver (Q5) are respectively hinged with the working ends of the second upright post (Q1) and the third crank (Q4), and the thirty-first linear driver (Q5) is electrically connected with the controller.