CN108838674B

CN108838674B - Automatic assembly device of water pump piston frame assembly

Info

Publication number: CN108838674B
Application number: CN201810850073.8A
Authority: CN
Inventors: 陈孝荣; 李红军; 周哲炜
Original assignee: Institute Of Zhejiang Sci Tech University Ouhai Co ltd
Current assignee: Institute Of Zhejiang Sci Tech University Ouhai Co ltd
Priority date: 2018-07-28
Filing date: 2018-07-28
Publication date: 2024-04-05
Anticipated expiration: 2038-07-28
Also published as: CN108838674A

Abstract

The invention relates to an automatic assembly device of a water pump piston frame assembly, which comprises an assembly platform and a turntable, wherein a plurality of operation stations are arranged adjacent to the edge of the turntable along the circumferential direction at intervals, clamps for positioning the water pump piston frame assembly are respectively arranged on the operation stations, and a plurality of moving mechanisms for moving all parts of the water pump piston frame assembly to the clamps are arranged on the assembly platform, so that the assembly of a piston fixing frame is performed repeatedly and repeatedly, the degree of automation is high, the assembly efficiency is improved, the whole process is automatically controlled and operated by a total control program, the influence of human factors is reduced, the qualification rate and the quality stability of products are improved, the production cost of the products is reduced to a great extent, and the production profit of the products is improved.

Description

Automatic assembly device of water pump piston frame assembly

Technical Field

The invention relates to automatic assembly equipment, in particular to an automatic assembly device of a water pump piston frame assembly.

Background

The water pump is a common device in the hydraulic field and has wide application in various industries and fields. The main function of the water pump is to transfer water from a low place to another place by internal power.

The RO diaphragm booster pump comprises a piston frame assembly, fig. 1 shows a water pump piston frame assembly, fig. 2 is an exploded schematic view of the water pump piston frame assembly, the water pump piston frame assembly comprises a base 01, a bearing 02, an eccentric shaft 03, a bearing retainer ring 04 and screws 05, the base 01 comprises a mounting part 011 with a cavity 012 and three second connecting parts 013 formed on the peripheral wall of the mounting part 011 at intervals, the bearing 02 is mounted in the cavity 012, the eccentric shaft 03 is mounted on the inner side of the bearing 02, three first connecting parts 041 are formed on the bearing retainer ring 04 at intervals, and each first connecting part 041 is correspondingly locked on one second connecting part 013 of the base 01 through one screw 05 so as to fix the bearing 02 in the base 01.

When the water pump piston frame assembly is assembled in the prior art, manual assembly is generally adopted:

step one, manually taking a base 01, putting the base 01 on a clamp, and then taking a bearing 02, wherein the force point is the outer ring of the bearing 02, and the fit tolerance between the bearing 02 and the base 01 cannot be measured;

step two, the product obtained in the step one is put on a clamp, the eccentric shaft 03 is pressed in, the force point is the inner ring of the bearing 02, and the fit tolerance of the bearing 02 and the eccentric shaft 03 cannot be measured;

And step three, taking the product obtained in the step two, placing the product on a positioning fixture, taking the bearing retainer ring 04, placing the bearing retainer ring 04 on the product obtained in the step two, aligning the position with the hole position, screwing the screw 05, and transferring to the next working procedure.

The three steps are completed by three persons sequentially, and the three steps are operated by staff working experience without detection of fit tolerance, press-in detection and the like among the components, so that the three steps have a certain skill requirement on the worker operation. Therefore, the manual assembly is low in production efficiency, a large amount of manpower and material resources are required to be consumed, and due to instability of human factors, the components are very easy to be installed in place at the matched position during assembly, so that the rejection rate of products is high, the qualification rate is low, the production cost of the water pump piston frame assembly is increased to a certain extent, and the production profit of enterprises is reduced.

It is therefore particularly important to provide an automatic assembly device for a water pump piston rack assembly.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic assembly device of a water pump piston frame assembly, which is convenient to use and high in assembly efficiency, aiming at the current state of the art.

The technical scheme adopted for solving the technical problems is as follows: an automatic assembly device of water pump piston frame subassembly, its characterized in that: comprising

An assembly platform;

the rotary table is arranged on the assembly platform, is driven by the first driving mechanism and can horizontally rotate relative to the assembly platform, a plurality of operation stations are circumferentially arranged adjacent to the edge of the rotary table at intervals, and clamps for positioning components of the water pump piston frame assembly are respectively arranged on each operation station;

the first moving and taking mechanism is arranged on the assembly platform and is close to the edge of the turntable and used for moving and taking the base to a corresponding clamp of the turntable;

the second moving and taking mechanism is arranged on the assembly platform and close to the edge of the turntable, and is arranged at the downstream of the first moving and taking mechanism according to the rotating direction of the turntable, and is used for moving and presetting the bearing in the base;

the first press-fitting mechanism is arranged on the assembly platform and close to the edge of the turntable, and is arranged at the downstream of the second moving and taking mechanism according to the rotating direction of the turntable, and is used for pressing the bearing into the base;

the third moving and taking mechanism is arranged on the assembly platform and close to the edge of the turntable, is arranged at the downstream of the first pressing mechanism according to the rotating direction of the turntable and is used for moving and presetting the eccentric shaft at the inner side of the bearing;

the second press-mounting mechanism is arranged on the assembly platform and close to the edge of the turntable, and is arranged at the downstream of the third moving and taking mechanism according to the rotating direction of the turntable, and is used for pressing the eccentric shaft into the bearing;

The fourth moving and taking mechanism is arranged on the assembly platform and close to the edge of the turntable, and is arranged at the downstream of the second pressing mechanism according to the rotating direction of the turntable, and is used for moving and placing the bearing retainer ring on the base;

the screw locking mechanism is arranged on the assembly platform and close to the edge of the turntable, and is arranged at the downstream of the fourth moving mechanism according to the rotating direction of the turntable, and is used for locking screws on the bearing retainer ring and the base;

and the finished product conveying mechanism is arranged on the assembly platform and is close to the edge of the turntable and used for removing the assembled water pump piston frame assembly from the corresponding clamp.

For further improving degree of automation, use manpower sparingly and raise the efficiency, this automatic assembly device still includes first conveying mechanism, second conveying mechanism, third conveying mechanism and fourth conveying mechanism, first conveying mechanism is used for carrying the base and the discharge end is close to first and moves and get the mechanism and arrange, second conveying mechanism is used for carrying bearing and the discharge end is close to the second and moves and get the mechanism and arrange, third conveying mechanism is used for carrying eccentric shaft and the discharge end is close to the third and moves and get the mechanism and arrange, fourth conveying mechanism is used for carrying bearing retainer ring and the discharge end is close to the fourth and moves and get the mechanism and arrange. The material is conveyed to the moving mechanism through the conveying mechanism, and then is moved to the corresponding clamp through the moving mechanism, so that manual conveying and feeding are not needed, and the efficiency is high.

In order to prevent that the bearing retainer ring is when removing to the base, the first connecting portion of bearing retainer ring does not correspond the second connecting portion of base and place to influence the assembly of bearing retainer ring, the fourth is moved and is got and be equipped with the directional mechanism that is used for directional bearing retainer ring on the mechanism, directional mechanism includes twelfth actuating mechanism and second sensor, the fourth is moved and is got the mechanism and is including the fourth chuck that is used for centre gripping bearing retainer ring, fourth chuck is connected with twelfth actuating mechanism's output drive to drive bearing retainer ring circumference rotation under twelfth actuating mechanism's effect, under the state that one of them first connecting portion of bearing retainer ring was detected to the second sensor, twelfth actuating mechanism stops work, and the fourth chuck removes bearing retainer ring to corresponding operation station under actuating assembly's effect.

Because three first connecting portions of the bearing retainer ring are of trisection structures, the second sensor detects one of the first connecting portions of the bearing retainer ring, and the bearing retainer ring can be accurately placed on the base through the moving mechanism, namely the first connecting portions and the second connecting portions are in one-to-one correspondence.

In order to enable the fourth chuck to effectively clamp the bearing retainer ring and place the bearing retainer ring on the base, the driving assembly comprises a ninth driving mechanism and a tenth driving mechanism, the ninth driving mechanism is used for driving the fourth chuck to move back and forth, the tenth driving mechanism is used for driving the fourth chuck to move up and down, and the fourth chuck clamps the bearing retainer ring and places the bearing retainer ring on the base through cooperation of the ninth driving mechanism and the tenth driving mechanism, and then the fourth chuck resets.

Preferably, the fourth moving and taking mechanism further comprises a fourth bracket and a fourth sliding head which are arranged on the assembly platform and are close to the edge of the turntable, the ninth driving mechanism is arranged on the fourth bracket, the fourth sliding head is arranged at the output end of the ninth driving mechanism and can move back and forth relative to the fourth bracket, the tenth driving mechanism is fixedly arranged on the fourth sliding head, and the fourth clamping head is arranged at the output end of the tenth driving mechanism. The arrangement of the fourth sliding head increases the structural compactness of the fourth moving and taking mechanism.

Preferably, the fourth chuck comprises two opposite clamping plates and an eleventh driving mechanism for driving the two clamping plates to be relatively far away or close, the eleventh driving mechanism and the clamping plates are arranged on the fixing seat, a guide groove is arranged at the bottom of the fixing seat, and the two clamping plates are arranged in the guide groove. The fourth chuck is simple in structure and can effectively clamp and release the bearing retainer ring.

In order to further increase the firmness of the fourth chuck clamping the bearing retainer ring, limiting grooves for the bearing retainer ring to be placed in are formed in the peripheral wall of each clamping plate along the circumferential direction, the width of each limiting groove is matched with the thickness of the bearing retainer ring, and the limiting grooves play a role in positioning the bearing retainer ring.

Specifically, the first pressure equipment mechanism includes depression bar, support arm and fourteenth actuating mechanism, the support arm is fixed to be located on the assembly platform, just the middle part of depression bar is connected with this support arm rotation, the one end of depression bar is equipped with the pressure head, and the other end is connected with fourteenth actuating mechanism's output rotation and reciprocates under fourteenth actuating mechanism's effect, the pressure head is located the top that corresponds the anchor clamps. The first press-fitting mechanism operates on a principle similar to a lever, is simple in action and involves few parts.

In order to prevent the press-fit surface of the press head from being well matched with the press-fit surface of the bearing, the press head and the fourteenth driving mechanism are connected with the press rod through a ball head, so that if the press head is inclined, fine adjustment of the angle can be performed to optimally apply pressure on the bearing.

In order to prevent the pressing head from contacting the bearing, hard interference and damage to the parts are generated under the condition of incomplete fit, the first pressing mechanism further comprises a third elastic piece, the pressing head has a tendency of being sprung on the bearing under the action of the third elastic piece, and the third elastic piece can play a certain buffering role, so that hard impact between the pressing head and the bearing is avoided.

In order to guide the track of the pressing head moving up and down relative to the pressing rod, the third elastic piece is a spring and sleeved on a second guide shaft, the first end of the second guide shaft is fixedly connected with the pressing head, the second end of the second guide shaft is movably arranged on the pressing rod in a penetrating mode, and the second end of the second guide shaft is provided with a blocking block which can be blocked and abutted on the pressing rod, so that the pressing head is prevented from inclining or shifting in the moving process, and the pressure cannot be optimally exerted on the bearing.

In order to improve the assembly precision between the bearing and the base, the pressure head is provided with a moment sensor which is electrically connected with a data acquisition device to judge the fit tolerance between the bearing and the base.

In order to further improve the assembly precision between the bearing and the base, a first detection mechanism for detecting whether the bearing and the eccentric shaft are assembled in place or not is arranged between the second press-fitting mechanism and the fourth moving mechanism.

Preferably, the first detection mechanism comprises a support, a sixteenth driving mechanism arranged on the support, a mounting frame arranged at the output end of the sixteenth driving mechanism, and a first sensor and a detection rod arranged on the mounting frame, wherein the support is arranged on the assembly platform, the mounting frame moves up and down under the action of the sixteenth driving mechanism, the first sensor is fixedly arranged on the mounting frame, the detection rod is movably arranged on the mounting frame, the lower end of the detection rod can synchronously move along with the mounting frame and is sprung to the top end of the eccentric shaft, and the detection rod and the first sensor are matched to detect whether the eccentric shaft and the bearing are arranged in place or not.

For the removal orbit to the measuring rod is led, be equipped with the uide bushing on the mounting bracket, the measuring rod activity wears to locate in the uide bushing, just be equipped with the card portion of supporting on the measuring rod that can block and support in uide bushing upper portion, improve the operational reliability of measuring rod.

In order to prevent hard interference damage from being generated between the detection rod and the eccentric shaft, the detection rod always has a downward movement trend under the action of a fourth elastic piece, and the fourth elastic piece can provide a buffering effect.

The specific structure of the clamp is as follows: the clamp comprises a mounting seat and a sliding shaft, wherein the base is arranged in the mounting seat, the bottom of the eccentric shaft is propped against the top of the sliding shaft, the mounting seat is partially inserted in the mounting hole and can axially move relative to the mounting hole, and the mounting seat always has a trend of upwards moving under the action of a first elastic piece; the sliding shaft is axially inserted into the mounting seat and can axially move relative to the mounting seat, and the sliding shaft always has a trend of upward movement under the action of the second elastic piece. The clamp adopts the double-floating mechanism, so that the clamp is prevented from hard interference with the piston fixing frame or the rotary table when being under the pressure of the piston fixing frame, and damage to parts is avoided.

Preferably, the mounting base comprises a connecting base, an inserting portion and a clamping portion, the inserting portion is movably inserted into the mounting hole, the connecting base extending outwards is formed at the top edge of the inserting portion, the clamping portion is formed on the upper portion of the connecting base and is provided with a cavity for accommodating the base, and the first elastic piece is arranged between the connecting base and the turntable.

For carrying out the direction to the moving track of mount pad, be equipped with at least one perforation on the connecting seat, this perforation internalization wears to be equipped with a first guiding axle, and the top of this first guiding axle can block and support in fenestrate upper end, and the lower part of first guiding axle is fixed to the carousel setting, and first elastic component is the spring and overlaps and locate on the first guiding axle, and the both ends of aforesaid spring support respectively and lean on connecting seat and carousel.

For easy placement of the piston holder, the clamping part is provided with at least three clamping jaws which are circumferentially and alternately arranged, the mounting part of the base is arranged in the cavity, and each second connecting part is correspondingly arranged between two adjacent clamping jaws. The clamping jaw interval sets up like this and provides the space of placing for moving the splint on getting the mechanism, avoids producing the interference between splint and the clamping part, and the clamping jaw interval sets up in addition and has alleviateed the weight of clamping part.

In order to ensure that the base is firmly clamped in the clamping part, a limiting part in limiting fit with the base is formed on the inner side wall of the clamping part, a groove is formed in the bottom of the base, and the top of the limiting part is inserted into the groove.

In order to protect the bearing and prevent the bearing from being damaged when the eccentric shaft is pressed, the top of the sliding shaft is provided with buffer parts, the buffer parts are at least two and are arranged at intervals along the circumferential direction of the top of the sliding shaft, and the buffer parts play a role in yielding to avoid hard impact between the eccentric shaft and the bearing.

Preferably, the sliding shaft comprises a head and a sliding rod formed at the lower end of the head, the second elastic piece is a spring and sleeved on the sliding rod, an axial through hole for inserting the sliding shaft is formed in the mounting seat, a step part is formed in the inner wall of the axial through hole, and two ends of the second elastic piece respectively abut against the head and the step part. The sliding shaft has a simple structure.

In order to ensure that the eccentric shaft is firmly assembled in the clamp, the top of the sliding shaft is provided with a magnetic conduction piece, and the lower end face of the eccentric shaft is contacted with the buffer part, so that the magnetic conduction piece can prevent the components of the water pump piston frame assembly from generating displacement during assembly and screw fastening.

Compared with the prior art, the invention has the advantages that: 1. according to the invention, the turntable is arranged, the plurality of operation stations are arranged on the turntable, and the moving and taking mechanism which can correspondingly move and take all the components (the base, the bearing, the eccentric shaft, the bearing retainer ring and the screw) of the piston fixing frame assembly to the clamp is arranged on the assembly platform, so that the assembly of the piston fixing frame is performed in a reciprocating manner, the automation degree is high, the assembly efficiency is improved, the whole process is automatically controlled and operated by the total control program, the influence of human factors is reduced, the manual labor force is liberated, the manual intervention operation is not needed, the qualification rate and the quality stability of products are improved, the production cost of the products is reduced to a great extent, and the production profit of the products is improved; 2. the invention is provided with a plurality of automatic detection mechanisms (such as a first detection mechanism, a second detection mechanism, a moment sensor arranged on the first press-fitting mechanism and a moment sensor arranged on the second press-fitting mechanism), so that the fit tolerance of each part of the piston fixing frame is ensured, the product assembly quality is improved, and the product qualification rate is further improved; and the unqualified products are directly not operated in the downstream working procedure, so that the waste of the components of the subsequent piston fixing frame assembly is avoided.

Drawings

FIG. 1 is a schematic diagram of a prior art water pump piston rack assembly;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic diagram of an embodiment of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view of the mounting platform and turntable of FIG. 3;

FIG. 6 is an enlarged view at A of FIG. 5;

FIG. 7 is a schematic view of the structure of the clamp of FIG. 6;

FIG. 8 is a schematic view of the mounting base of FIG. 7;

FIG. 9 is an exploded view of FIG. 7;

FIG. 10 is a schematic view of the first conveying structure and the first removing structure of FIG. 3;

FIG. 11 is a schematic diagram of the first moving structure of FIG. 10;

FIG. 12 is a schematic view of the second moving structure of FIG. 3;

FIG. 13 is a schematic structural view of the first press-fitting mechanism of FIG. 3;

FIG. 14 is a schematic view of the structure of FIG. 12 in another direction;

FIG. 15 is a partial cross-sectional view of FIG. 14;

FIG. 16 is a schematic view of the third moving structure of FIG. 3;

FIG. 17 is a schematic diagram of a second press-fit mechanism of FIG. 3;

FIG. 18 is a schematic diagram of the first detecting mechanism of FIG. 3;

FIG. 19 is a schematic view of the structure of FIG. 18 in another direction;

FIG. 20 is a schematic diagram of the fourth moving structure of FIG. 3;

FIG. 21 is a partial schematic view of the structure of FIG. 20;

FIG. 22 is a schematic diagram of a second detecting mechanism of FIG. 3;

FIG. 23 is a schematic view of the finished product conveyor of FIG. 3;

fig. 24 is a schematic structural view of the fifth moving mechanism of fig. 23.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 3 to 24, the automatic assembly device of the water pump piston rack assembly of the preferred embodiment includes an assembly platform 1 and a turntable 2, wherein the turntable 2 is arranged on the assembly platform 1 and driven by a first driving mechanism to horizontally rotate relative to the assembly platform 1. Ten operation stations are circumferentially arranged on the turntable 2 adjacent to the edge of the turntable at intervals, in this embodiment, the turntable 2 is a cam divider, and a first driving mechanism is arranged on the assembly platform 1 and is in driving connection with the turntable 2 so as to drive the turntable 2 to rotate and enable the turntable 2 to stay at each operation station for a certain time under the action of a controller.

As shown in fig. 5 to 9, each operation station is provided with a jig 3 for positioning the water pump piston frame assembly, and the ten jigs 3 move synchronously with the turntable 2. The specific structure of the clamp 3 is as follows:

the turntable 2 is provided with a mounting hole 21, the clamp 3 comprises a mounting seat 31 and a sliding shaft 32, the mounting seat 31 is partially inserted into the mounting hole 21 and can axially move relative to the mounting hole 21, and the mounting seat 31 always has a trend of moving upwards under the action of a first elastic piece 341; the sliding shaft 32 is axially inserted into the mounting seat 31 and can axially move relative to the mounting seat 31, and the sliding shaft 32 always has a tendency to move upwards under the action of the second elastic piece 33.

The mounting base 31 includes a connecting base 311, an inserting portion 312, and a clamping portion 313, a sheath 211 is disposed in the mounting hole 21, and the inserting portion 312 is movably inserted into the sheath 211. The top edge of the inserting portion 312 is formed with an outwardly extending connecting seat 311, the clamping portion 313 is formed on the upper portion of the connecting seat 311 and has a cavity, and the first elastic member 341 is disposed between the connecting seat 311 and the turntable 2.

The clamping portion 313 has at least three clamping jaws 3131 arranged at intervals in the circumferential direction, and the mounting portion 011 of the base 01 is disposed in the cavity of the clamping portion 313, and the second connection portion 013 of the base 01 is correspondingly located between two adjacent clamping jaws 3131. And the inside wall of clamping part 313 is last shaping have with base 01 spacing complex spacing portion 3132, and base 01's bottom is equipped with recess 014, and the top of spacing portion 3132 inserts in recess 014, further guarantees that base 01 stably assembles in anchor clamps 3.

The connecting seat 311 is provided with at least one through hole 3111, a first guide shaft 34 is movably arranged in the through hole 3111, the top of the first guide shaft 34 can be blocked against the upper end of the through hole 3111, the lower part of the first guide shaft 34 is connected to the turntable 2 in a threaded manner, the first elastic piece 341 is a spring and is sleeved on the first guide shaft 34, and two ends of the spring respectively abut against the connecting seat 311 and the turntable 2. When the connection seat 311 is moved downward by the pressure of the components of the piston holder, the spring is compressed; when the pressure applied to the connecting seat 311 is removed, the connecting seat 311 moves upwards under the action of the spring until the top of the first guide shaft 34 is clamped with the connecting seat 311.

In addition, the connecting seat 311 is further provided with a positioning guide pin 342 extending downward, the upper end of the positioning guide pin 342 is fixedly arranged on the connecting seat 311, and the lower end is movably arranged on the turntable 2. The positioning guide pins 342 further guide the moving track of the connecting seat 311, so that the connecting seat 311 can only move up and down along a certain track relative to the turntable 2 without offset or torsion.

The sliding shaft 32 comprises a head 321 and a sliding rod 322 formed at the lower end of the head 321, the second elastic piece 33 is a spring and sleeved on the sliding rod 322, an axial through hole 314 for inserting the sliding shaft 32 is formed in the mounting seat 31, a step portion 315 is formed in the inner wall of the axial through hole 314, and two ends of the second elastic piece 33 respectively abut against the head 321 and the step portion 315.

The sliding shaft 32 is provided with a vertically arranged bar-shaped hole 323, the inserting part 312 is provided with a radial through hole 3121 communicated with the axial through hole 314, a limiting shaft 35 passes through the bar-shaped hole 323 and the radial through hole 3121, two ends of the limiting shaft 35 are fixed on the sheath 211, and the moving stroke of the sliding shaft 32 is limited by the cooperation of the limiting shaft 35 and the bar-shaped hole 323.

The head 321 is formed with at least two buffer portions 3211, and the buffer portions 3211 are circumferentially spaced apart along the top of the sliding shaft 32. After the bearing 02 is press-fitted, in order to prevent the eccentric shaft 03 from being damaged when the eccentric shaft 03 is press-fitted, the buffer portion 3211 can play a role in giving way when the eccentric shaft 03 is press-fitted.

And the top of the head 321 is provided with a magnetic conduction piece 3212, the lower end face of the eccentric shaft 03 is contacted with the buffer portion 3211, and the magnetic conduction piece 3212 can further prevent the eccentric shaft 03 from generating displacement when the components of the water pump piston frame assembly are assembled and fastened by the screw 05.

The clamp 3 of this embodiment forms a double floating structure through the arrangement of the first elastic element 341 and the second elastic element 33, so that when the component for assembling the piston fixing frame is in the clamp 3, the clamp 3 can move downwards by a certain distance under pressure, and the problem of damage to the component caused by hard interference between the clamp 3 and the turntable 2 or between the clamp 3 and the water pump piston frame component is avoided. In other words, when the bearing 02 is pressed into the base 01, the force point of the bearing 02 is the outer ring of the bearing 02, when the eccentric shaft 03 is pressed into the bearing 02, the force point of the bearing 02 is the inner ring of the bearing 02, the double floating structure of the clamp 3 effectively avoids the damage of the bearing 02 in the press mounting process, and in addition, the double floating structure plays a role in buffering when assembling all parts, and deformation, vibration and the like of the turntable 2 are avoided.

As shown in fig. 3 and 4, ten working mechanisms are sequentially arranged on the assembly platform 1 at intervals, each working mechanism is sequentially provided with a first moving and taking mechanism 10, a second moving and taking mechanism 11, a first press-fitting mechanism 4, a third moving and taking mechanism 13, a second press-fitting mechanism 5, a first detecting mechanism 6, a fourth moving and taking mechanism 16, a screw locking mechanism 17, a second detecting mechanism 7 and a finished product conveying mechanism 19 in a clockwise direction, and when the turntable 2 stays at each operation station, each working mechanism corresponds to one clamp 3. The ten working mechanisms are all close to the edge of the turntable 2 and are sequentially arranged along the rotation direction of the turntable 2, namely, the second moving and taking mechanism 11 is arranged at the downstream of the first moving and taking mechanism 10, the first pressing mechanism 4 is arranged at the downstream of the second moving and taking mechanism 11, the third moving and taking mechanism 13 is arranged at the downstream of the first pressing mechanism 4, the second pressing mechanism 5 is arranged at the downstream of the third moving and taking mechanism 13, and so on.

The first moving and taking mechanism 10 is used for moving and taking the base 01 to the corresponding clamp 3 of the turntable 2, the second moving and taking mechanism 11 is used for moving and presetting the bearing 02 in the cavity 012 of the base 01, the first pressing mechanism 4 is used for pressing the bearing 02 into the cavity 012 of the base 01, the third moving and taking mechanism 13 is used for moving and presetting the eccentric shaft 03 inside the bearing 02, the second pressing mechanism 5 is used for completely pressing the eccentric shaft 03 inside the bearing 02, the first detecting mechanism 6 is used for detecting whether the bearing 02 and the eccentric shaft 03 are pressed in place, the fourth moving and taking mechanism 16 is used for moving and setting the bearing retainer ring 04 on the base 01, the screw locking mechanism 17 is used for locking the screw 05 on the bearing retainer ring 04 and the base 01, the second detecting mechanism 7 is used for detecting the locking state of the screw 05, and the finished product conveying mechanism 19 is used for removing the assembled water pump piston frame assembly from the corresponding clamp 3.

The automatic assembly device of the present embodiment further includes a first conveying mechanism 81, a second conveying mechanism 82, a third conveying mechanism 83, and a fourth conveying mechanism 84, further improving the degree of automation of the assembly of the water pump piston rack assembly. The first conveying mechanism 81 is used for conveying the base 01, the discharging end of the first conveying mechanism is arranged close to the first moving and taking mechanism 10, the second conveying mechanism 82 is used for conveying the bearing 02, the discharging end of the second conveying mechanism is arranged close to the second moving and taking mechanism 11, the third conveying mechanism 83 is used for conveying the eccentric shaft 03, the discharging end of the third conveying mechanism is arranged close to the third moving and taking mechanism 13, and the fourth conveying mechanism 84 is used for conveying the bearing retainer ring 04, and the discharging end of the fourth conveying mechanism is arranged close to the fourth moving and taking mechanism 16.

The first moving and taking mechanism 10, the second moving and taking mechanism 11, the third moving and taking mechanism 13 and the fourth moving and taking mechanism 16 are respectively provided with a material sensor for detecting whether the materials are in place, and when the material sensors detect that the conveying mechanism conveys the materials in place, the corresponding moving and taking mechanisms work to move the materials to the clamps 3 of the corresponding stations.

As shown in fig. 10 to 11, the first conveying mechanism 81 includes a first vibration plate 811 and a first conveying rail 812, a feeding end of the first conveying rail 812 is connected to a discharging end of the first vibration plate 811, the discharging end of the first conveying rail 812 is disposed near the first moving mechanism 10, and a first constant-vibration conveyor may be provided at a bottom of the first conveying rail 812. The upper end surface of the first conveying rail 812 has a guide bar 813, one of the second connection parts 013 of the base 01 is located at one side of the guide bar 813, and the other two second connection parts 013 of the base 01 are located at the other side of the guide bar 813. The guiding strip 813 plays roles in guiding and preventing errors, so that after the first moving mechanism 10 moves the base 01, the base 01 can be positioned in the clamping portion 313 in an oriented and accurate mode, namely, each second connecting portion 013 is positioned between the two clamping jaws 3131 of the clamping portion 313, and the problem that interference is generated between the base 01 and the clamping portion 313 and the base 01 cannot be placed in is avoided.

As shown in fig. 11, when the first conveying mechanism 81 conveys the base 01 into position and is detected by the material sensor on the first transferring mechanism 10, the first transferring mechanism 10 operates. The first moving and taking mechanism 10 comprises a first bracket 101 arranged on the assembly platform 1, a thirteenth driving mechanism, a second driving mechanism 104, a third driving mechanism and a first chuck 105 which are arranged on the first bracket 101, and a first guide rod 103 is arranged on the first bracket 101.

The thirteenth driving mechanism is in driving connection with the first sliding head 102, and the first sliding head 102 moves back and forth along the first guide rod 103 (forward in the direction towards the turntable 2 and backward in the direction away from the turntable 2) under the action of the thirteenth driving mechanism; the second driving mechanism 104 is arranged on the first sliding head 102 and is in driving connection with the first chuck 105 so as to drive the first chuck 105 to move up and down; the third driving mechanism drives the first collet 105 to clamp or unclamp the base 01, specifically, the first collet 105 has two oppositely disposed jaws 1051, the two jaws 1051 are separated from each other by the third driving mechanism to be supported on the side wall of the cavity 012 of the base 01, thereby clamping and moving the base 01 to the corresponding clamp 3, and then the two jaws 1051 are moved close to each other by the third driving mechanism to release the base 01, thereby placing the base 01 on the clamp 3.

The first clamping head 105 clamps the base 01 by supporting the two clamping plates 1051 on the side wall of the cavity 012 of the base 01, so that interference between the clamping plates 1051 and the clamp 3 when the base 01 is placed can be prevented, and the base is inconvenient to place; secondly, if the base 01 is not completely matched and placed in the fixture 3, the base can be guided by the clamping plate 1051.

After the base 01 is placed on the holder 3, the turntable 2 rotates, and then the bearing 02 is moved to the holder 3 on which the base 01 is placed by the second conveying mechanism 82 and the second moving mechanism 11.

As shown in fig. 3 and 4, the second conveying mechanism 82 includes a storage disc 821 and a second conveying track 822, a feeding end of the second conveying track 822 is connected with a discharging end of the storage disc 821, the discharging end of the second conveying track 822 is arranged close to the second moving and taking mechanism 11, and the second conveying track 822 is obliquely arranged from top to bottom toward the second moving and taking mechanism 11, so as to ensure that the bearing 02 moves smoothly.

As shown in fig. 12, the material sensor on the second moving and taking mechanism 11 starts to work after sensing the bearing 02 on the second conveying mechanism 82, and the second moving and taking mechanism 11 includes a second bracket 111, and a fourth driving mechanism, a fifth driving mechanism 114, a sixth driving mechanism and a second chuck 115 which are provided on the second bracket 111. In this embodiment, the fourth driving mechanism is connected to the second sliding head 112 in a driving manner and drives the second sliding head 112 to move back and forth along the second guiding rod 113 (forward in the direction towards the turntable 2 and backward in the direction away from the turntable 2), the fifth driving mechanism 114 is disposed on the second sliding head 112 and is connected to the second chuck 115 in a driving manner to drive the first chuck 105 to move up and down, and the sixth driving mechanism drives the second chuck 115 to clamp or unclamp the bearing 02. Specifically, the second chuck 115 has two oppositely disposed clamping plates 116, the two clamping plates 116 are separated from each other by the sixth driving mechanism to be supported on the inner side wall of the bearing 02, so that the bearing 02 is clamped and moved to the corresponding clamp 3, the bearing 02 is preset in the base 01, and then the two clamping plates 116 are moved close to each other by the sixth driving mechanism to release the bearing 02.

After the bearing 02 is preset in the base 01 by the second moving mechanism 11, the bearing 02 needs to be further pressed into the base 01 by the first pressing mechanism 4.

As shown in fig. 13 to 15, the first press-fitting mechanism 4 includes a fixing base 41, a pressing rod 42, a supporting arm 43, a fourteenth driving mechanism 44, a pressing head 47, and a third elastic member 45, the fixing base 41 is fixedly disposed on the assembly platform 1, and the supporting arm 43 and the fourteenth driving mechanism 44 are both disposed on the fixing base 41. The support arm 43 is vertically arranged, the middle part of the pressure bar 42 is rotationally connected with the top end of the support arm 43, one end of the pressure bar 42 is provided with a pressure head 47, the other end of the pressure bar 42 is rotationally connected with the output end 441 of the fourteenth driving mechanism 44 and moves up and down under the action of the fourteenth driving mechanism 44, the pressure head 47 is positioned above the corresponding clamp 3, and when the pressure head 47 is in contact with the bearing 02, the pressure head 47 has a tendency of being sprung on the bearing 02 under the action of the third elastic piece 45. The principle of operation of the plunger 42 is similar to a lever.

In this embodiment, the third elastic member 45 is a spring and is sleeved on the second guiding shaft 46, the first end of the second guiding shaft 46 is fixedly connected with the pressing head 47, the second end of the second guiding shaft 46 is movably inserted on the pressing rod 42, the second end of the second guiding shaft 46 is provided with a blocking block 461 capable of blocking the pressing rod 42, and two ends of the spring respectively abut against the pressing head 47 and the pressing rod 42.

The ram 47 and the fourteenth driving mechanism 44 are connected to the pressing rod 42 through a ball 48, so that if the ram 47 is not exactly matched with the alignment bearing 02 for press fitting, for example, if the ram 47 is inclined, the angles between the ram 47 and the pressing rod 42 and between the pressing rod 42 and the fourteenth driving mechanism 44 can be finely adjusted to prevent the hard interference between the ram 47 and the bearing 02 from damaging the components.

In addition, the fixing seat 41 is further provided with a supporting seat 49 for supporting the clamp 3, the supporting seat 49 is located below the turntable 2 and plays a role in protecting the clamp 3, and the pressure of the pressure head 47 is finally transmitted to the supporting seat 49, so that the turntable 2 is prevented from being deformed and vibrated due to the transmission of force to the turntable 2, and the turntable 2 is effectively protected.

To ensure good assembly between the bearing 02 and the base 01, the ram 47 is provided with a torque sensor that is electrically connected to a data acquisition unit 40 to determine the tolerance of fit between the bearing 02 and the base 01. The data acquisition device 40 is arranged on the assembly platform 1, the torque sensor transmits the detected parameters to the data acquisition device 40, the parameters are collected by the data acquisition device 40 and then sent to the main controller for judgment, if the parameters are within the range of a set value (the bearing pressing-in base pressure is 0.35-0.5 KN), the turntable 2 rotates to a downstream station, and the corresponding working mechanism at each downstream station works; if the parameter is not within the set value, the turntable 2 rotates but none of the downstream working mechanisms operates on the reject product (bearing 02 mounted on base 01) until the reject product is output from the product output mechanism.

After the bearing 02 is pressed into the base 01 by the first press-fitting mechanism 4, the turntable 2 rotates to move the previously assembled bearing 02 and base 01 to the next station, and then the eccentric shaft 03 is moved and pre-placed on the inner ring of the bearing 02 by the third conveying mechanism 83 and the third moving mechanism 13.

As shown in fig. 3 and 4, the third conveying mechanism 83 includes a third vibration disc 831 and a third conveying track 832, a feeding end of the third conveying track 832 is connected to a discharging end of the third vibration disc 831, the discharging end of the third conveying track 832 is disposed near the third moving mechanism 13, and a third direct vibration conveyor may be disposed at a bottom of the third conveying track 832.

As shown in fig. 16, the material sensor on the third moving and taking mechanism 13 starts to work after detecting the eccentric shaft 03 on the third conveying mechanism 83, and the third moving and taking mechanism 13 includes a third bracket 131, a seventh driving mechanism 132 arranged on the third bracket 131, a third sliding head 133 arranged at the output end of the seventh driving mechanism 132, an eighth driving mechanism arranged on the third sliding head 133, and a third chuck 134 in driving connection with the eighth driving mechanism, where the seventh driving mechanism 132 drives the third sliding head 133 to move back and forth (forward in the direction towards the turntable 2 and backward in the direction away from the turntable 2). In this embodiment, the third chuck 134 is a suction tube, and the eighth driving mechanism is a vacuum generator connected to the upper end of the suction tube, and the suction tube is inserted into the slot 031 of the eccentric shaft 03 to suck the eccentric shaft 03 and move it.

After the eccentric shaft 03 is preset inside the bearing 02 by the third moving mechanism 13, the eccentric shaft 03 is further pressed into the bearing 02 by the second press-fitting mechanism 5.

As shown in fig. 17, the second press-fitting mechanism 5 is different from the first press-fitting mechanism 4 in that: the second press-fitting mechanism 5 does not need a pressing rod 42, the fifteenth driving mechanism 52 is arranged on the second fixing seat 51, the fifteenth driving mechanism 52 is an air cylinder or a hydraulic cylinder, and the second pressing head 53 is directly arranged at the output end of the fifteenth driving mechanism 52 and moves up and down under the action of the fifteenth driving mechanism 52 so as to apply pressure on the eccentric shaft 03.

The torque sensor on the second press-fitting mechanism 5 is electrically connected with the data collector 40 to judge the fit tolerance between the bearing 02 and the eccentric shaft 03. The data collector 40 is arranged on the assembly platform 1, the torque sensor transmits the detected parameters to the data collector 40, the parameters are collected by the data collector 40 and then sent to the controller for judgment, if the parameters are within the range of the set values, the turntable 2 rotates to the downstream stations, and the corresponding working mechanisms at the downstream stations work; if the parameter is not within the set value (eccentric shaft pressing bearing force: 1.1-1.5 KN), the turntable 2 rotates but the downstream working mechanism does not operate on the unqualified product (eccentric shaft 03 is preassembled on bearing 02) until the unqualified product is output from the finished product output mechanism.

In the present embodiment, the first press-fitting mechanism 4 may be configured as the second press-fitting mechanism 5, and the second press-fitting mechanism 5 may be configured as the first press-fitting mechanism 4.

After the eccentric shaft 03 is pressed into the inner ring of the bearing 02 by the second press-fitting mechanism 5, the turntable 2 moves it to the first detecting mechanism 6, and the first detecting mechanism 6 detects whether the two pressed-in components (the bearing 02 and the eccentric shaft 03) are assembled in place by the height detection. Since the first press-fitting mechanism 4 and the second press-fitting mechanism 5 are provided with torque sensors each, and the maximum value and the minimum value of the press-in pressure are set, even if the torque has been reached, the product may not be pressed in place, so the first detection mechanism 6 further plays a role in inspection.

As shown in fig. 18 and 19, the first detecting mechanism 6 includes a support 61, a sixteenth driving mechanism 62 disposed on the support 61, a mounting frame 63 disposed at an output end of the sixteenth driving mechanism 62, and a first sensor 64 and a detecting rod 65 disposed on the mounting frame 63, the support 61 is disposed on the assembly platform 1, the mounting frame 63 moves up and down under the action of the sixteenth driving mechanism 62, the first sensor 64 is fixedly disposed on the mounting frame 63, the detecting rod 65 is movably disposed on the mounting frame 63, and a lower end of the detecting rod 65 can move synchronously with the mounting frame 63 and is sprung to a top end of the eccentric shaft 03, and the detecting rod 65 and the first sensor 64 cooperate to detect whether the eccentric shaft 03 and the bearing 02 are mounted in place.

The mounting frame 63 is provided with a guide sleeve 66, the detection rod 65 movably penetrates through the guide sleeve 66, the detection rod 65 is provided with a clamping part 651 which can be clamped and abutted on the upper part of the guide sleeve 66, and the clamping part 651 limits the downward moving stroke of the detection rod 65.

The detecting rod 65 is sleeved with a fourth elastic member 67, and has a downward movement trend all the time under the action of the fourth elastic member 67. The mounting frame 63 has a blocking piece 631, the blocking piece 631 is located below the first sensor 64, and two ends of the fourth elastic member 67 respectively abut against the blocking piece 631 and the blocking portion 651.

The detection rod 65 moves downwards along with the mounting frame 63 under the action of the sixteenth driving mechanism 62, after the detection rod 65 contacts the eccentric shaft 03, the mounting frame 63 continues to move downwards for a certain distance, at this time, the detection rod 65 moves upwards by the reaction force of the eccentric shaft 03 until reaching the groove-type photoelectric detection port 641 of the first sensor 64, the first sensor 64 detects a signal, the eccentric shaft 03 and the bearing 02 are not pressed in place, the product is disqualified, and if the detection rod 65 does not reach the groove-type photoelectric detection port 641 of the first sensor 64, the eccentric shaft 03 and the bearing 02 are pressed in place.

For products that are inspected to be acceptable, the fourth conveyor 84 and the fourth removal mechanism 16 operate to move and place the circlip 04 on the clamp 3 at the corresponding station.

As shown in fig. 3 and 4, the fourth conveying mechanism 84 includes a fourth vibration plate 841 and a fourth conveying track, a feeding end of the fourth conveying track is connected with a discharging end of the fourth vibration plate 841, the discharging end of the fourth conveying track is arranged near the fourth moving and taking mechanism 16, and a fourth direct vibration conveyor can be arranged at the bottom of the fourth conveying track.

As shown in fig. 20 to 21, the fourth moving mechanism 16 includes a fourth bracket 161, a ninth driving mechanism 163 provided on the fourth bracket 161, a tenth driving mechanism 164, and a fourth chuck 165, in this embodiment, the fourth chuck 165 is provided on the fourth sliding head 162, the ninth driving mechanism 163 is connected to the fourth sliding head 162 in a driving manner and drives the fourth sliding head 162 to move forward and backward (forward in the direction toward the turntable 2 and backward in the direction away from the turntable 2), and the tenth driving mechanism 164 is provided on the fourth sliding head 162 and is connected to the fourth chuck 165 in a driving manner so as to drive the fourth chuck 165 to move up and down.

The fourth chuck 165 includes two oppositely disposed clamping plates 1651 and an eleventh driving mechanism for driving the two clamping plates 1651 to be relatively far away or close together, where the eleventh driving mechanism and the clamping plates 1651 are both disposed on the chuck base 166, a guide slot is disposed at the bottom of the chuck base 166, and the two clamping plates 1651 are both disposed in the guide slot and can move in the guide slot. Specifically, the two clamp plates 1651 are moved away from each other to be supported on the inner side wall of the circlip 04 by the eleventh driving mechanism, or the two clamp plates are moved toward each other to release the circlip 04 by the eleventh driving mechanism.

The peripheral wall of each clamping plate 1651 is provided with a limit groove 1652 for placing the bearing retainer ring 04 along the circumferential direction, and the width of the limit groove 1652 is adapted to the thickness of the bearing retainer ring 04 so as to ensure the firmness of the fourth clamping head 165 clamping the bearing retainer ring 04.

Since the first connection portion 041 on the bearing retainer 04 is three equal-divided angles, when the fourth conveying mechanism 84 and the fourth moving and taking mechanism 16 hardly ensure that the bearing retainer 04 is placed on the base 01, the first connection portion 041 of the bearing retainer 04 just corresponds to the second connection portion 013 on the base 01, so that the fourth moving and taking mechanism 16 further comprises an orientation mechanism for orienting the bearing retainer 04. The orientation mechanism includes a twelfth drive mechanism 167 and a second sensor 168, the fourth collet 165 being drivingly connected to the twelfth drive mechanism 167, the second sensor 168 being a fiber optic sensor. In a state where the two clamping plates 1651 are supported on the inner side wall of the circlip 04, the fourth chuck 165 is rotated slowly in the circumferential direction by the twelfth driving mechanism 167. When the second sensor 168 detects one of the first connection portions 041 of the bearing rings 04, the twelfth driving mechanism 167 stops operating, and the ninth driving mechanism 163 drives the fourth slider 162 to move forward and backward to place the bearing ring 04 on the corresponding work station.

Because the three first connection portions 041 are arranged in a trisection manner, as long as the second sensor 168 detects one of the first connection portions 041 of the bearing retainer ring 04, the bearing retainer ring 04 can be positioned on the base 01 in an oriented and accurate manner, so that the three first connection portions 041 and the three second connection portions 013 on the base 01 are in one-to-one correspondence.

As shown in fig. 3 and 4, the first connection portion 041 and the corresponding second connection portion 013 are then locked by the screw 05 by the lock screw mechanism 17. The screw locking mechanism 17 is a prior art, and is not described herein, and specific reference may be made to patent CN201320183640.1 "screw automatic assembly device".

As shown in fig. 22, after the screw 05 is locked, whether the screw 05 has a lock leakage, a floating tooth, a tooth rot, or the like is determined by the second detection mechanism 7. The second detecting mechanism 7 is similar to the first detecting mechanism 6 in structure except that the detecting rods 71 and the first sensors 72 of the second detecting mechanism 7 are three, and each detecting rod 71 is correspondingly matched with one first sensor 72 to correspondingly detect one screw 05. In addition, the second detection means 7 further comprises a sensor for measuring the torque of the electric batch to measure the torque of the screwing screw 05.

As shown in fig. 23 and 24, the product is finally output by the product conveying mechanism 19, and the product conveying mechanism 19 includes a genuine product sorting mechanism 191 and a defective product sorting mechanism 192 provided downstream of the genuine product sorting mechanism 191. The quality product sorting mechanism 191 is used for outputting quality products which are detected to be qualified by the first detection mechanism 6, the second detection mechanism 7 and the moment sensor on the first press-fitting mechanism 4 and the moment sensor on the second press-fitting mechanism 5, and the defective product sorting mechanism 192 is used for outputting defective products which are detected to be unqualified by the first detection mechanism 6, the second detection mechanism 7, the moment sensor on the first press-fitting mechanism 4 and the moment sensor on the second press-fitting mechanism 5 in any process. In this embodiment, if each component of the piston holder assembly is detected as failed in a certain process in the assembly process, the downstream working mechanism does not operate on the defective product until the defective product is output from the defective product sorting mechanism 192, so that the components of the piston holder can be saved. For example, the bearing 02 is not assembled in place, and the subsequent eccentric shaft 03 is not assembled.

The genuine product sorting mechanism 191 includes a genuine product conveying passage 1911 and a genuine product receiving hopper 1912 provided at a discharge end of the genuine product conveying passage 1911, and the inferior product sorting mechanism 192 includes an inferior product conveying passage 1921 and an inferior product receiving hopper 1922 provided at a discharge end of the inferior product conveying passage 1921. The assembly platform 1 is provided with a fifth moving mechanism 12 for clamping the piston fixing frame and moving the piston fixing frame to the position of the genuine product conveying channel 1911 or the position of the defective product conveying channel 1921.

The fifth moving mechanism 12 includes a fifth bracket 121, a fifth sliding head 122 slidably disposed on the fifth bracket 121, a seventeenth driving mechanism 123 disposed on the fifth sliding head 122, a sixth sliding head 124 disposed at an output end of the seventeenth driving mechanism 123, an eighteenth driving mechanism 125 disposed on the sixth sliding head 124, and a fifth chuck 127 disposed at an output end of the eighteenth driving mechanism 125. The fifth slider 122 reciprocates along the fifth holder 121 by the nineteenth driving mechanism 126 to reciprocate the fifth chuck 127 between the genuine article conveying path and the defective article conveying path. The sixth slider 124 moves back and forth by the seventeenth driving mechanism 123, the fifth collet 127 moves back and forth with the sixth slider 124, and the fifth collet 127 can move up and down by the eighteenth driving mechanism 125.

The fifth jaw 127 includes three circumferentially spaced clamp plates 1271, similar to the structure of a doll machine, which are moved away from each other to clamp the piston mount and toward each other to release the piston mount by a nineteenth drive mechanism. Each clamp 1271 is located between two jaws 3131 of the clamp 3, and three jaws 3131 cooperate to clamp the peripheral wall of the base 01.

The driving mechanism in this embodiment may be an air cylinder or a hydraulic cylinder.

Claims

1. An automatic assembly device of water pump piston frame subassembly, its characterized in that: comprising

An assembly platform (1);

the rotary table (2) is arranged on the assembly platform (1) and driven by the first driving mechanism to horizontally rotate relative to the assembly platform (1), a plurality of operation stations are circumferentially arranged at intervals adjacent to the edge of the rotary table (2), and clamps (3) for positioning components of the water pump piston frame assembly are respectively arranged on each operation station;

the first moving and taking mechanism (10) is arranged on the assembly platform (1) and is close to the edge of the turntable (2) and is used for moving and taking the base (01) to the corresponding clamp (3) of the turntable (2);

the second moving and taking mechanism (11) is arranged on the assembly platform (1) and is close to the edge of the rotary table (2), and is arranged at the downstream of the first moving and taking mechanism (10) according to the rotating direction of the rotary table (2) and is used for moving and presetting the bearing (02) in the base (01);

The first press-fitting mechanism (4) is arranged on the assembly platform (1) and is close to the edge of the turntable (2), and is arranged at the downstream of the second moving and taking mechanism (11) according to the rotating direction of the turntable (2) and is used for pressing the bearing (02) into the base (01);

the third moving and taking mechanism (13) is arranged on the assembly platform (1) and is close to the edge of the turntable (2), and is arranged at the downstream of the first press-fitting mechanism (4) according to the rotation direction of the turntable (2) and is used for moving and presetting the eccentric shaft (03) at the inner side of the bearing (02);

the second press-fitting mechanism (5) is arranged on the assembly platform (1) and is close to the edge of the turntable (2), and is arranged at the downstream of the third moving and taking mechanism (13) according to the rotating direction of the turntable (2) and is used for pressing the eccentric shaft (03) into the bearing (02);

the fourth moving and taking mechanism (16) is arranged on the assembly platform (1) and is close to the edge of the turntable (2), and is arranged at the downstream of the second pressing mechanism (5) according to the rotating direction of the turntable (2) and is used for moving and arranging the bearing retainer ring (04) on the base (01);

the screw locking mechanism (17) is arranged on the assembly platform (1) and is close to the edge of the turntable (2), and is arranged at the downstream of the fourth moving mechanism (16) according to the rotating direction of the turntable (2) and used for locking the screw (05) on the bearing retainer ring (04) and the base (01);

And the finished product conveying mechanism (19) is arranged on the assembly platform (1) and is close to the edge of the turntable (2) and is used for removing the assembled water pump piston frame assembly from the corresponding clamp (3).

2. The automatic assembly device of a water pump piston rack assembly according to claim 1, wherein: the first press-fitting mechanism (4) comprises a pressing rod (42), a supporting arm (43) and a fourteenth driving mechanism (44), the supporting arm (43) is fixedly arranged on the assembly platform (1), the middle part of the pressing rod (42) is rotationally connected with the supporting arm (43), one end of the pressing rod (42) is provided with a pressing head (47), the other end of the pressing rod is connected with the output end of the fourteenth driving mechanism (44) and moves up and down under the action of the fourteenth driving mechanism (44), and the pressing head (47) is located above the corresponding clamp (3).

3. The automatic assembly device of a water pump piston rack assembly according to claim 2, wherein: the first press-fitting mechanism (4) further comprises a third elastic member (45), and the pressing head (47) keeps a downward movement trend under the action of the third elastic member (45).

4. The automatic assembly device of a water pump piston rack assembly according to claim 2, wherein: the pressing head (47) and the fourteenth driving mechanism (44) are connected with the pressing rod (42) through a ball head (48).

5. The automatic assembly device of a water pump piston rack assembly according to claim 2, wherein: the first press-fitting mechanism (4) further comprises a fixed seat (41) arranged on the assembly platform (1), the support arm (43) and the fourteenth driving mechanism (44) are arranged on the fixed seat (41), the fixed seat (41) is further provided with a supporting seat (49) for supporting the clamp (3), and the supporting seat (49) is located below the turntable (2).

6. The automatic assembly device of a water pump piston rack assembly according to claim 1, wherein: the first press-fitting mechanism (4) is provided with a moment sensor, and the moment sensor is electrically connected with a data acquisition device (40) to judge the fit tolerance between the components of the piston fixing frame.

7. The automatic assembly device of a water pump piston rack assembly according to claim 1, wherein: the fourth moving mechanism (16) is provided with an orientation mechanism for orienting the bearing retainer ring (04), the orientation mechanism comprises a twelfth driving mechanism (167) and a second sensor (168), the fourth moving mechanism (16) comprises a fourth chuck (165) for clamping the bearing retainer ring (04), the fourth chuck (165) is in driving connection with the output end of the twelfth driving mechanism (167) and drives the bearing retainer ring (04) to circumferentially rotate under the action of the twelfth driving mechanism (167), the twelfth driving mechanism (167) stops working when the second sensor (168) detects one of the first connecting parts (041) of the bearing retainer ring (04), and the fourth chuck (165) moves the bearing retainer ring (04) to a corresponding clamp (3) under the action of the driving assembly.

8. The automatic assembly device of a water pump piston rack assembly according to claim 1, wherein: still include first conveying mechanism (81), second conveying mechanism (82), third conveying mechanism (83) and fourth conveying mechanism (84), first conveying mechanism (81) are used for carrying base (01) and the discharge end is close to first moving and gets mechanism (10) and arrange, second conveying mechanism (82) are used for carrying bearing (02) and the discharge end is close to the second and move and get mechanism (11) and arrange, third conveying mechanism (83) are used for carrying eccentric shaft (03) and the discharge end is close to the third and move and get mechanism (13) and arrange, fourth conveying mechanism (84) are used for carrying bearing retainer ring (04) and the discharge end is close to fourth and move and get mechanism (16) and arrange.

9. The automatic assembly device of a water pump piston rack assembly according to claim 1, wherein: a first detection mechanism (6) for detecting whether the bearing (02) and the eccentric shaft (03) are assembled in place or not is arranged between the second press-fitting mechanism (5) and the fourth moving and taking mechanism (16).

10. The automatic assembly device of a water pump piston rack assembly according to claim 9, wherein: the first detection mechanism (6) comprises a support (61), a sixteenth driving mechanism (62) arranged on the support (61), a mounting frame (63) arranged at the output end of the sixteenth driving mechanism (62) and a first sensor (64) and a detection rod (65) arranged on the mounting frame (63), wherein the support (61) is arranged on the assembly platform (1), the mounting frame (63) moves up and down under the action of the sixteenth driving mechanism (62), the first sensor (64) is fixedly arranged on the mounting frame (63), the detection rod (65) is movably arranged on the mounting frame (63), the lower end of the detection rod (65) can synchronously move along with the mounting frame (63) and is sprung to the top end of the eccentric shaft (03), and the detection rod (65) and the first sensor (64) are matched to detect whether the eccentric shaft (03) and the bearing (02) are arranged in place.