CN112139736A

CN112139736A - Three way catalyst converter assembly welding jig

Info

Publication number: CN112139736A
Application number: CN202010986206.1A
Authority: CN
Inventors: 陈勇棠; 黄浩; 何泽显; 杨雲升; 张伶俐; 黄师; 区宇杰; 陈杰林; 李济寒; 王永湘; 廖浩江
Original assignee: Liuzhou Xuzhi Automation Technology Co ltd; Liuzhou Vocational and Technical College
Current assignee: Liuzhou Xuzhi Automation Technology Co ltd; Liuzhou Vocational and Technical College
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2020-12-29

Abstract

The invention discloses a three-way catalyst assembly welding clamp which comprises a first positioning seat and a second positioning seat which are arranged on two sides of a welding robot in parallel side by side, wherein the first positioning seat is connected with a first process clamping unit, a second process clamping unit and a third process clamping unit, and the second positioning seat is connected with a fourth process clamping unit and a fifth process clamping unit. The welding fixture disclosed by the invention can be used for accurately clamping and welding parts in each process of the three-way catalyst assembly, so that the offset phenomenon caused by unstable fixation is prevented, no loosening phenomenon is generated in the welding process, the product welding effect is improved, the reject ratio of the catalyst assembly in the welding process is reduced, the welding fixture disclosed by the invention is reasonable in design, the height utilization rate is improved to the maximum extent, and the interference of the operation of a welding robot is avoided.

Description

Three way catalyst converter assembly welding jig

Technical Field

The invention belongs to the technical field of clamps, and relates to a clamp for welding a three-way catalyst assembly.

Background

With the rapid development and expansion of the industry, the demand for automobiles is getting larger, the pollution of the automobile exhaust to the environment is serious, and therefore, the demand for three-way catalysts designed for protecting the environment is also getting larger and larger. The exhaust pipe is arranged between an engine exhaust manifold and the silencer, so that the whole exhaust system is in flexible connection, the effects of reducing vibration and noise, facilitating installation and prolonging the service life of the exhaust silencing system are achieved, and the exhaust pipe is mainly made of stainless steel. For a general automobile, pressure is high when exhaust gas of the automobile leaves an engine, noise generated by the automobile can be felt by people, at the moment, the exhaust pipe of the automobile is used for mainly silencing, a silencer is arranged in the exhaust pipe, noise of the automobile is greatly reduced, the main working principle of the automobile is that airflow is divided through multiple channels, the divided flows are only subjected to mutual friction and impact to enable the flow velocity of the airflow to be gradually reduced, the circulation is repeated, and finally the exhaust gas is discharged and flows out through the exhaust pipe of the automobile, so that the noise is reduced, and the effect of reducing the noise of the daily automobile is achieved. Because an exhaust pipe is very long, if the exhaust pipe is placed on a welding fixture for welding, the exhaust pipe occupies a very long space, under the normal condition, a middle muffler and a rear muffler are respectively positioned and compressed by using one welding fixture, while the front muffler is shorter and parts on a pipe body are fewer, and the positioning and compressing work of the exhaust pipe can be completed by generally using one device, so that the front muffler positioning and compressing device is arranged at one end of the middle muffler welding fixture for reasonably using space resources on the middle muffler welding fixture.

There is not the anchor clamps that are used for fixed automobile exhaust catalyst converter assembly with convenient welding specially in the existing market, what the welding of going forward and disappear generally adopted is manual welding, consequently is more troublesome in welding process, has some problems: the phenomena of inaccurate positioning and the like are easy to occur, the working efficiency is reduced, and the production cost is increased; the welding precision is not high, the phenomena of welding detachment and welding leakage can exist, the exhaust pipe is not tightly sealed, and the problems of high noise of the exhaust pipe or easy falling of the exhaust pipe can be caused; if the welding time is too long, the exhaust pipe can be damaged or the appearance of the exhaust pipe can be influenced; moreover, people have limited energy, and can feel weak under long-time work, so that the production efficiency is reduced and the error rate is improved. Therefore, in this case, an intelligent robot is required to replace manual welding, and the robot can weld the exhaust pipe in all directions under a preset program, and in this case, a welding fixture is required to accurately position and clamp each component of the exhaust pipe, especially, no gap is left between the welding surfaces of two adjacent components.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a three-way catalyst assembly welding clamp which can accurately clamp and weld parts in each process of a three-way catalyst assembly.

The technical scheme adopted by the invention for realizing the purpose is as follows: a three-way catalyst assembly welding clamp comprises a first positioning seat and a second positioning seat which are arranged on two sides of a welding robot in parallel, wherein the first positioning seat is connected with a first process clamping unit, a second process clamping unit and a third process clamping unit;

the first process clamping unit comprises a first process bottom plate, a first process barrel bottom supporting seat, a first process end cover supporting seat, a first process barrel bottom pressing assembly, a first process end cover limiting seat assembly and a first process barrel bottom limiting seat assembly, wherein the first process barrel bottom supporting seat and the first process end cover supporting seat are respectively connected to the first process bottom plate; the first process end cover limiting seat assembly comprises an end cover limiting seat support and an end cover limiting seat, the end cover limiting seat is fixed on the first process bottom plate through the end cover limiting seat support, the position of the end cover limiting seat corresponds to that of the end cover, and a boss for positioning the end cover is arranged on the side face of the end cover limiting seat; the first-process barrel bottom limiting seat assembly comprises a first-process barrel bottom limiting seat support and a first-process barrel bottom limiting seat, the first-process barrel bottom limiting seat support is positioned on the first-process bottom plate in a sliding mode through a sliding locking mechanism, the first-process barrel bottom limiting seat is connected with the upper end of the first-process barrel bottom limiting seat support, the position of the first-process barrel bottom limiting seat corresponds to the position of the barrel bottom, and a positioning groove for positioning the barrel bottom is formed in the side face of the first-process barrel bottom limiting seat; the cylinder bottom limiting seat assembly in the first process transversely compresses the cylinder bottom and the end cover through the sliding locking mechanism, so that the welding parts of the cylinder bottom and the end cover are butted, and the cylinder bottom is compressed through the cylinder bottom compressing assembly in the first process;

the second process clamping unit comprises a second process bottom plate, a second process cylinder bottom pressing assembly, a second process end cover supporting seat, a second process cylinder bottom limiting seat assembly and a second process air inlet flange clamping assembly, the second process end cover supporting seat is positioned on the second process bottom plate, the second process cylinder bottom limiting seat assembly and the second process air inlet flange clamping assembly are respectively positioned on two sides of the second process end cover supporting seat, the second process cylinder bottom limiting seat assembly is connected with the second process bottom plate through a sliding locking mechanism, and the second process air inlet flange clamping assembly is connected with the second process bottom plate through a second support; the second-procedure barrel bottom limiting seat assembly comprises a second-procedure barrel bottom limiting seat support and a second-procedure barrel bottom limiting seat, the second-procedure barrel bottom limiting seat support is positioned on the second-procedure bottom plate in a sliding mode through a sliding locking mechanism, and the second-procedure barrel bottom limiting seat is connected with the upper end of the second-procedure barrel bottom limiting seat support; the air inlet flange and the air inlet pipe are welded into a whole in advance and then clamped and positioned on the air inlet flange clamping assembly in the second process, the end cover and the cylinder bottom are welded into a whole and then positioned on the end cover supporting seat in the second process, the cylinder bottom, the end cover, the air inlet pipe and the air inlet flange are transversely pressed by the cylinder bottom limiting seat assembly in the second process through the sliding locking mechanism, the air inlet pipe is butted with the welding part of the end cover, and the cylinder bottom is pressed by the cylinder bottom pressing assembly in the second process;

the third-process clamping unit comprises a third-process bottom plate, a third-process air inlet flange clamping assembly, a third-process connecting ring clamping assembly and a third-process barrel bottom supporting seat, the third-process barrel bottom supporting seat is positioned on the third-process bottom plate, the third-process air inlet flange clamping assembly and the third-process connecting ring clamping assembly are respectively positioned on two sides of the third-process barrel bottom supporting seat, the third-process connecting ring clamping assembly is connected with the third-process bottom plate through a sliding locking mechanism, and the third-process air inlet flange clamping assembly is connected with the third-process bottom plate through a third support; after the air inlet flange, the air inlet pipe, the end cover and the cylinder bottom are welded into a whole, the air inlet flange is clamped and positioned on the air inlet flange clamping assembly in the third process, the cylinder bottom is positioned on the cylinder bottom supporting seat in the third process, the connecting ring is clamped and positioned on the connecting ring clamping assembly in the third process, and the connecting ring and the cylinder bottom are transversely pressed by the connecting ring clamping assembly in the third process through the sliding locking mechanism, so that the connecting ring is butted with the welding part of the cylinder bottom;

the fourth process clamping unit comprises a fourth process bottom plate, a fourth process air inlet flange clamping assembly, a fourth process cylinder bottom supporting seat, a fourth process cylinder bottom pressing assembly, a fourth process catalysis part cylinder supporting seat, a fourth process catalysis part cylinder pressing assembly and a fourth process catalysis part cylinder limiting seat assembly, the fourth process cylinder bottom supporting seat and the fourth process catalysis part cylinder supporting seat are respectively positioned on the fourth process bottom plate, the fourth process catalysis part cylinder limiting seat assembly is positioned on the outer side of the fourth process catalysis part cylinder supporting seat and connected with the fourth process bottom plate through a sliding locking mechanism, and the fourth process air inlet flange clamping assembly is positioned on the outer side of the fourth process cylinder bottom supporting seat and connected with the fourth process bottom plate through a fourth support; the fourth process catalysis part cylinder limiting seat assembly comprises a catalysis part cylinder limiting seat and a catalysis part cylinder limiting seat support, the catalysis part cylinder limiting seat support is positioned on the fourth process bottom plate in a sliding mode through a sliding locking mechanism, and the catalysis part cylinder limiting seat is connected with the upper end of the catalysis part cylinder limiting seat support; after the air inlet flange, the air inlet pipe, the end cover, the cylinder bottom and the connecting ring are welded into a whole, the air inlet flange is clamped and positioned on an air inlet flange clamping assembly in a fourth process, the cylinder bottom is positioned on a cylinder bottom supporting seat in the fourth process, the cylinder bottom is tightly pressed by a cylinder bottom pressing assembly in the fourth process, the catalytic part cylinder is positioned on a cylinder supporting seat in the catalytic part in the fourth process, the catalytic part cylinder is tightly pressed by a cylinder pressing assembly in the catalytic part in the fourth process, and the catalytic part cylinder and the connecting ring are transversely tightly pressed by a limiting seat assembly in the catalytic part cylinder in the fourth process through a sliding locking mechanism, so that the catalytic part cylinder is butted with the welding part of the connecting ring;

the fifth process clamping unit comprises a fifth process bottom plate, a fifth process air inlet flange clamping assembly, a fifth process cylinder bottom supporting seat, a fifth process catalytic unit cylinder supporting seat, a fifth process air outlet conical cylinder supporting seat and a fifth process air outlet flange clamping assembly, the fifth process air outlet conical cylinder supporting seat, the fifth process catalytic unit cylinder supporting seat and the fifth process cylinder bottom supporting seat are sequentially positioned on the fifth process bottom plate, the fifth process air inlet flange clamping assembly is positioned on the outer side of the fifth process cylinder bottom supporting seat and connected with the fifth process bottom plate through a fifth support, and the fifth process air outlet flange clamping assembly is positioned on the outer side of the fifth process air outlet conical cylinder supporting seat and connected with the fifth process bottom plate through a sliding locking mechanism; the air inlet flange, the air inlet pipe, the end cover, the barrel head, the go-between, the catalysis portion barrel welds as an organic whole back, the flange clamp that admits air presss from both sides tight location on fifth process flange clamp component, and the barrel head location is on fifth process barrel head supporting seat, the catalysis portion barrel location is on fifth process catalysis portion barrel supporting seat, go out the air cone section of thick bamboo and go out the air flange and weld as an organic whole in advance after press from both sides tight location on fifth process flange clamp component of giving vent to anger, and go out the air cone section of thick bamboo location on fifth process awl section of thick bamboo supporting seat of giving vent to anger, make fifth process flange clamp component of giving vent to anger transversely compress tightly an air cone section of thick bamboo and catalysis portion barrel through slip locking mechanism, make.

The further scheme of the invention is as follows: the structure of the second-process air inlet flange clamping assembly, the third-process air inlet flange clamping assembly, the fourth-process air inlet flange clamping assembly and the fifth-process air inlet flange clamping assembly is the same, the second-process air inlet flange clamping assembly comprises an air inlet flange clamping cylinder, an air inlet flange positioning plate and air inlet flange clamping mechanisms which are symmetrically connected to two sides of the front end of the air inlet flange clamping cylinder respectively, and the air inlet flange positioning plate is connected with the front end of a telescopic rod of the air inlet flange clamping cylinder; the air inlet flange clamping mechanism comprises a fixed rod, a linkage rod, a steering block, an air inlet flange pressing block and an air inlet flange positioning pin, the fixed rod is connected with the outer side of the front end of an air inlet flange clamping cylinder, the steering block is L-shaped, the right angle of the steering block is hinged with an air inlet flange positioning plate, the air inlet flange pressing block is connected with one end of the steering block and is positioned on the front side of the air inlet flange positioning plate, one end, away from the air inlet flange pressing block, of the steering block is connected with the fixed rod through the linkage rod, one end of the air inlet flange positioning pin is connected with the fixed rod, the other end of the air inlet flange positioning pin penetrates through the air inlet flange positioning; the rear end of the air inlet flange clamping cylinder is also provided with an air inlet flange manual clamping handle, the outer side of the rear end of the air inlet flange clamping cylinder is provided with an air inlet flange manual clamping handle positioning seat, the front end of the air inlet flange manual clamping handle is hinged with the air inlet flange manual clamping handle positioning seat, the middle part of the air inlet flange manual clamping handle is hinged with the rear end of a telescopic rod of the air inlet flange clamping cylinder through a clamping handle hinge rod, and the telescopic rod of the air inlet flange clamping cylinder can be manually controlled to stretch through the air inlet flange manual clamping handle.

The further scheme of the invention is as follows: the sliding locking mechanism comprises a bottom plate, a sliding plate, a manual pressing mechanism, a locking cylinder, two sliding rails and two sliding blocks, wherein the two sliding rails are arranged in parallel and are respectively connected with the upper end surface of the bottom plate, and the sliding blocks are respectively matched with the corresponding sliding rails; the sliding plate is connected with the sliding block and is positioned on the sliding rail in a sliding manner through the sliding block; the manual pressing mechanism comprises a manual pressing mechanism support, a manual pressing mechanism first connecting rod, a manual pressing mechanism second connecting rod, a poking rod and a poking handle, the manual pressing mechanism support is connected with the bottom plate and located on the outer side of the sliding plate, one end of the manual pressing mechanism first connecting rod is hinged to the manual pressing mechanism support, one end, away from the manual pressing mechanism support, of the manual pressing mechanism first connecting rod is hinged to the manual pressing mechanism second connecting rod, one end, away from the manual pressing mechanism first connecting rod, of the manual pressing mechanism second connecting rod is hinged to the outer side edge of the sliding plate, the end portion, hinged to the manual pressing mechanism first connecting rod and the manual pressing mechanism second connecting rod, of the manual pressing mechanism first connecting rod is fixedly connected with the poking rod, the included angle between the manual pressing mechanism first connecting rod and the poking rod is larger than 90 degrees, and the poking handle is; the locking cylinder is located the slide outside and is connected with the bottom plate up end, and the telescopic link and the slide of locking cylinder are connected, and telescopic link through the locking cylinder is flexible can drive the slide and slide along the slide rail.

The further scheme of the invention is as follows: the third process connecting ring clamping assembly comprises a connecting ring air cylinder, a connecting ring air cylinder mounting plate, a substrate, positioning seats, connecting ring pressure arms, a connecting ring pressure arm seat and inner pressure blocks, the substrate is connected with the sliding locking mechanism through a sixth support, the connecting ring air cylinder is connected with the connecting ring air cylinder mounting plate, the front ends of telescopic shafts of the connecting ring air cylinders penetrate through the connecting ring air cylinder mounting plate and are connected with the substrate, the positioning seats are connected with one side, away from the connecting ring air cylinder, of the substrate, the number of the connecting ring pressure arms is at least three, the number of the connecting ring pressure arm seat and the number of the inner pressure blocks are the same as that of the connecting ring pressure arms, the connecting ring pressure arm seat takes the telescopic shafts as a circle center annular array to be arranged at the position close to the outer edge of the substrate, the inner pressure blocks take the telescopic shafts as a circle center annular array to be arranged at the position close to the, the front end of the connecting ring pressure arm is provided with an external pressure block corresponding to the internal pressure block, the rear end of the connecting ring pressure arm is hinged with the connecting ring air cylinder mounting plate, the middle part of the connecting ring pressure arm is hinged with a connecting ring pressure arm seat through a first hinge shaft, and the first hinge shaft penetrates through a chute of the connecting ring pressure arm; the rear end of the connecting ring cylinder is also provided with a connecting ring manual clamping handle, a connecting ring manual clamping handle positioning seat is arranged on the outer side of the rear end of the connecting ring cylinder, the front end of the connecting ring manual clamping handle is hinged with the connecting ring manual clamping handle positioning seat, and the middle part of the connecting ring manual clamping handle is hinged with the rear end of a telescopic shaft of the connecting ring cylinder through a first hinge rod; but the telescopic shaft of manual control go-between cylinder is flexible through the manual clamping handle of go-between for go-between cylinder mounting panel is kept away from or is close to the base plate, and go-between pressure arm is close to or keeps away from interior briquetting under the guide effect of chute, thereby makes outer briquetting and interior briquetting cooperation compress tightly or loosen the go-between of locating in the briquetting outside.

The further scheme of the invention is as follows: the fifth process air outlet flange clamping assembly comprises an air outlet flange cylinder, an air outlet flange cylinder mounting plate, a flange positioning seat, a clamping mechanism connecting rod, a manual operating handle and flange clamping mechanisms which are symmetrically arranged on two sides of the air outlet flange cylinder respectively, the rear end of the air outlet flange cylinder is connected with the air outlet flange cylinder mounting plate, the flange positioning seat is connected with one side, away from the air outlet flange cylinder, of the air outlet flange cylinder mounting plate, the air outlet flange cylinder mounting plate is connected with a sliding locking mechanism through an air outlet flange cylinder support, and the clamping mechanism connecting rod is connected to the front end of a telescopic rod of the air outlet flange cylinder; the flange clamping mechanism comprises an air outlet flange pressing arm, an air outlet flange pressing arm seat, an air outlet flange pressing block and a flange positioning pin, the air outlet flange pressing arm seat is connected with the outer side of an air outlet flange cylinder, the air outlet flange pressing arm seat is provided with a sliding groove extending outwards, the rear end of the air outlet flange pressing arm is hinged with a clamping mechanism connecting rod, the middle part of the air outlet flange pressing arm is connected with the air outlet flange pressing arm seat through a second hinged shaft, the second hinged shaft is positioned in the sliding groove, the air outlet flange pressing block is connected with the front end of the air outlet flange pressing arm and extends to the front side of a flange positioning seat, and the flange positioning pin is connected with the flange positioning seat and corresponds to the position of; the front end of the manual control handle is hinged with the side face of the connecting rod of the clamping mechanism, the middle of the manual control handle is hinged with the air outlet flange cylinder mounting plate through a third hinge rod, and the expansion rod of the air outlet flange cylinder can be manually controlled to stretch through the manual control handle, so that the air outlet flange pressure arm is close to or far away from the flange positioning seat under the guiding action of the sliding groove, and the air outlet flange pressing block is pressed or loosened to position the air outlet flange on the flange positioning seat.

The further scheme of the invention is as follows: the first process barrel bottom pressing assembly, the second process barrel bottom pressing assembly, the fourth process barrel bottom pressing assembly and the fourth process catalysis part barrel pressing assembly are the same in structure and comprise pressing cylinders, pressing cylinder supports, pressing rods, first pressing blocks and pressing handles, the pressing cylinders are connected with corresponding process bottom plates through the pressing cylinder supports, the pressing rods are connected with rotating shafts of the pressing cylinders, the front ends of the pressing rods extend to the upper sides of corresponding pressing parts, the first pressing blocks are connected with the front ends of the pressing rods, and the pressing handles are connected with the upper sides of the pressing rods.

The further scheme of the invention is as follows: the second process clamping unit further comprises a first accessory positioning component for positioning a first accessory, the first accessory positioning component is positioned between the second process end cover supporting seat and the second process air inlet flange clamping component and is connected with the second process bottom plate through a seventh support, the first accessory positioning component comprises a positioning barrel, a spring and a positioning pin, a positioning hole with a closed lower end is formed in the middle of the positioning barrel, a guide groove communicated with the positioning hole is formed in the side face of the positioning barrel and is L-shaped, a guide rod is vertically connected to the outer side of the positioning pin, the spring and the positioning pin are respectively positioned in the positioning hole, the spring is positioned on the lower side of the positioning pin, the guide rod is positioned in the guide groove, and the guide rod can slide in the guide groove; the first accessory is positioned at the upper end of the positioning pin, and the positioning pin can enable the first accessory to abut against the welding position of the air inlet pipe by poking the guide rod to slide along the guide groove.

The further scheme of the invention is as follows: the second process clamping unit further comprises a second accessory clamping assembly for clamping a second accessory, the second accessory clamping assembly is connected with the second process base plate through an eighth bracket, and the second accessory clamping assembly is positioned on the outer side of the cylinder bottom; the second accessory clamping assembly comprises a second accessory cylinder, a first connecting plate and a second accessory clamp, the first connecting plate is connected with the front end of a telescopic rod of the second accessory cylinder, the second accessory clamp is connected with the first connecting plate, a manual control handle is further arranged at the rear end of the second accessory cylinder, a manual control handle positioning seat is arranged on the outer side of the rear end of the second accessory cylinder, the front end of the manual control handle is hinged to the manual control handle positioning seat, and the middle of the manual control handle is hinged to the rear end of the telescopic rod of the second accessory cylinder through a control handle hinge rod; the telescopic rod of the second accessory cylinder can be manually controlled to stretch through the manual control handle, so that the second accessory abuts against the welding position with the cylinder bottom, and the second accessory cylinder keeps an abutting state.

The further scheme of the invention is as follows: the third process clamping unit further comprises a third accessory positioning assembly for positioning a third accessory, the third accessory positioning assembly is connected with the third process bottom plate through a ninth support and positioned on the outer side of the connecting ring, the third accessory positioning assembly comprises a third accessory cylinder, a cylinder seat and an accessory positioning seat, the third accessory cylinder is connected with the cylinder seat, the cylinder seat is connected with the ninth support, and the front end of a telescopic rod of the third accessory cylinder penetrates through the cylinder seat and is connected with the accessory positioning seat; the rear end of the telescopic rod of the third accessory cylinder is further connected with a cylinder handle, and the telescopic rod of the third accessory cylinder can be manually controlled to contract through the cylinder handle, so that the third accessory abuts against the welding position of the connecting ring, and the third accessory cylinder keeps an abutting state.

The further scheme of the invention is as follows: the fifth procedure clamping unit further comprises a fourth accessory clamping assembly for clamping and positioning a fourth accessory, the fourth accessory clamping assembly is positioned on the fifth procedure bottom plate through the first cylinder support, and the fourth accessory clamping assembly is positioned on the outer side of the catalytic part cylinder; the fourth accessory clamping assembly comprises a first air cylinder, a second connecting plate, a fourth accessory clamp and a manual operating mechanism, the lower end of the second connecting plate is connected with an expansion link of the first air cylinder, the fourth accessory clamp is connected with the upper end of the second connecting plate, the manual operating mechanism comprises a support, a second hinged rod, a first connecting rod of the manual operating mechanism and a second connecting rod of the manual operating mechanism, the support is connected with the outer side of the front end of the first air cylinder, one end of the first connecting rod of the manual operating mechanism is hinged with the support, the other end of the first connecting rod of the manual operating mechanism is hinged with the second connecting plate through the second hinged rod, the end part of the first connecting rod of the manual operating mechanism, which is hinged with the second hinged rod, is fixedly connected with the second connecting rod of the manual operating mechanism, and the included angle between the first connecting rod of the manual operating mechanism and the second connecting rod of the manual operating mechanism; the second connecting plate is also provided with an auxiliary clamping mechanism for clamping a connecting pin on a fourth accessory, the auxiliary clamping mechanism comprises a second air cylinder, an auxiliary clamping pressure arm, a clamping handle, an auxiliary clamping pressure seat and an auxiliary clamping pressing block, the second air cylinder is fixedly connected with the outer side of the upper end of the second connecting plate, the middle of the auxiliary clamping pressure arm is hinged with the upper end of the second connecting plate, the rear end of the auxiliary clamping pressure arm is hinged with a telescopic rod of the second air cylinder, the auxiliary clamping pressure seat is connected with the second connecting plate and positioned on the upper side of the fourth accessory clamp, the auxiliary clamping pressing block is hinged with the front end of the auxiliary clamping pressure arm, the position of the auxiliary clamping pressing block corresponds to the auxiliary clamping pressure seat, and the clamping handle is connected with the middle of the auxiliary clamping pressure arm; the fourth accessory clamp is fixedly clamped on the fourth accessory clamp, the connecting pin is positioned in the auxiliary clamping pressure seat, the auxiliary clamping pressure arm is controlled through the clamping handle, so that the auxiliary clamping pressure block clamps the connecting pin in the auxiliary clamping pressure seat, and the clamping state is kept through the second air cylinder; the second connecting plate is manually controlled by a second connecting rod of the manual control mechanism to enable the fourth accessory to abut against the welding position of the catalytic part cylinder, and the abutting state is kept through the first air cylinder.

The welding fixture for the three-way catalyst assembly has the following beneficial effects due to the adoption of the technical scheme: according to the invention, the pneumatic clamp is adopted to clamp and position each component of the three-way catalyst assembly, and each component of the catalyst assembly can be well fixed on the clamp and welded by the fixing mode, so that the offset phenomenon caused by unstable fixation is prevented, no loosening phenomenon is generated in the welding process, the welding effect of a product is improved, the reject ratio of an exhaust pipe in the welding process is reduced, and the product quality is effectively improved; in addition, the process of the invention is reasonable in design, the beats of all the processes are basically consistent, the time is saved, and the efficiency is improved; meanwhile, each clamp is reasonable in design and distribution, the space utilization rate is improved, an effective space is provided for welding of a robot arm, and the welding convenience is improved.

The three-way catalyst assembly welding jig of the present invention will be further described with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic diagram of a three-way catalyst assembly of the prior art;

FIG. 2 is a schematic structural diagram of a three-way catalyst assembly welding fixture of the present invention;

FIG. 3 is one of the structural views illustrating the operation state of the clamping unit in the first process;

FIG. 4 is a second schematic structural view of the working state of the clamping unit in the first process;

FIG. 5 is one of the schematic structural views of the first process clamping unit;

FIG. 6 is a second schematic view of the first process clamping unit;

FIG. 7 is a schematic structural view of the slide lock mechanism;

FIG. 8 is one of the structural views illustrating the operation state of the clamping unit in the second process;

FIG. 9 is a second schematic structural view showing the working state of the clamping unit in the second process;

FIG. 10 is one of the structural schematic views of the second process clamping unit;

FIG. 11 is a second schematic structural view of the second process clamping unit;

FIG. 12 is one of the schematic structural views of the second process inlet flange clamp assembly;

FIG. 13 is a second schematic structural view of a second process inlet flange clamp assembly;

FIG. 14 is a schematic structural view of a first accessory positioning assembly;

FIG. 15 is an exploded view of the first accessory support assembly;

FIG. 16 is one of the schematic structural illustrations of the second accessory clamp assembly;

FIG. 17 is a second schematic structural view of the second accessory clamp assembly;

FIG. 18 is one of the structural views showing the operating state of the clamping unit in the third process;

FIG. 19 is a second schematic view of the operating state of the clamping unit in the third step;

FIG. 20 is one of the schematic structural views of the clamping unit for the third process;

FIG. 21 is a second schematic view of the clamping unit of the third process;

FIG. 22 is one of the structural schematic views of the third process interface ring clamp assembly;

FIG. 23 is a second schematic structural view of the interface ring clamp assembly of the third process;

FIG. 24 is a schematic view of the construction of the press arm of the attachment ring clamp assembly;

FIG. 25 is a schematic structural view of a third accessory positioning assembly;

FIG. 26 is one of the structural views showing the operation state of the fourth process clamping unit;

FIG. 27 is a second schematic view of the fourth process clamping unit in operation;

FIG. 28 is one of the structural views of the fourth process clamping unit;

FIG. 29 is a second schematic structural view of the fourth process clamping unit;

FIG. 30 is one of the schematic structural views showing the operating state of the clamping unit in the fifth process;

FIG. 31 is a second schematic view of the working state of the clamping unit in the fifth step;

FIG. 32 is one of the structural views of the fifth process clamping unit;

FIG. 33 is a second schematic view of the fifth process clamping unit;

FIG. 34 is one of the schematic structural illustrations of a fifth process vent flange clamp assembly;

FIG. 35 is a second schematic structural view of a fifth process vent flange clamp assembly;

fig. 36 is a schematic structural view of a fourth accessory clamp assembly.

Detailed Description

As shown in fig. 1, the three-way catalyst assembly in the prior art includes an air inlet flange 101, an air inlet pipe 102, an end cover 103, a cylinder bottom 104, a connecting ring 105, a catalytic part cylinder 106, an air outlet cone 107 and an air outlet flange 108 which are welded in sequence from left to right, wherein a first accessory 109, a second accessory 110, a third accessory 111 and a fourth accessory 112 are welded on the outer sides of the air inlet pipe 102, the cylinder bottom 104, the connecting ring 105 and the catalytic part cylinder 106 respectively, the air inlet flange 101 and the air inlet pipe 102 are welded in advance to form an air inlet small assembly, and the air outlet cone 107 and the air outlet flange 108 are welded in advance to form an air outlet small assembly.

The welding process of the three-way catalyst assembly welding fixture comprises the following steps:

a first step: welding the end cover 103 with the cylinder bottom 104;

a second step: an air inlet flange 101 and an air inlet pipe 102 are welded in advance, then the air inlet pipe 102 is welded with an end cover 103 in the first process, meanwhile, a first accessory 109 is welded to the outer side of the air inlet pipe 102, and a second accessory 110 is welded to the outer side of a cylinder bottom 104;

a third step: welding the connection ring 105 to the cylinder bottom 104 in the second process, and simultaneously welding the third attachment 111 to the outside of the connection ring 105;

a fourth step: welding the catalyst portion cylinder 106 to the connection ring 105 in the third step;

a fifth step: the air outlet cone 107 and the air outlet flange 108 are welded in advance, then the air outlet cone 107 is welded with the catalytic part cylinder 106 in the fourth process, and meanwhile, the fourth accessory 112 is welded to the outer side of the catalytic part cylinder 106.

As shown in fig. 2 to 36, the welding jig for the three-way catalyst assembly of the present invention comprises a first positioning seat 1 and a second positioning seat 2 which are arranged in parallel at two sides of a welding robot side by side, wherein the first positioning seat 1 is connected with a first process clamping unit 3, a second process clamping unit 4 and a third process clamping unit 5, and the second positioning seat 2 is connected with a fourth process clamping unit 6 and a fifth process clamping unit 7;

the first process clamping unit 3 comprises a first process bottom plate 301, a first process cylinder bottom supporting seat 302, a first process end cover supporting seat 303, a first process cylinder bottom pressing assembly, a first process end cover limiting seat assembly and a first process cylinder bottom limiting seat assembly, wherein the first process cylinder bottom supporting seat 302 and the first process end cover supporting seat 303 are respectively connected to the first process bottom plate 301, the first process cylinder bottom limiting seat assembly is positioned on the outer side of the first process cylinder bottom supporting seat 302 and is connected with the upper end face of the first process bottom plate 301 through a sliding locking mechanism 313, the first process end cover limiting seat assembly is positioned on the outer side of the first process end cover supporting seat 303 and is connected with the upper end face of the first process bottom plate 301, and the cylinder bottom 104 and the end cover 103 are respectively positioned on the corresponding supporting seats; the first-process end cover limiting seat assembly comprises an end cover limiting seat support 304 and an end cover limiting seat 305, the end cover limiting seat 305 is fixed on the first-process bottom plate 301 through the end cover limiting seat support 304, the position of the end cover limiting seat 305 corresponds to that of the end cover 103, and a boss 3051 for positioning the end cover 103 is arranged on the side surface of the end cover limiting seat 305; the first-process barrel bottom limiting seat assembly comprises a first-process barrel bottom limiting seat support 310 and a first-process barrel bottom limiting seat 309, the first-process barrel bottom limiting seat support 310 is slidably positioned on the first-process bottom plate 301 through a sliding locking mechanism 313, the first-process barrel bottom limiting seat 309 is connected with the upper end of the first-process barrel bottom limiting seat support 310, the position of the first-process barrel bottom limiting seat 309 corresponds to the position of the barrel bottom 104, and a positioning groove 3091 for positioning the barrel bottom 104 is formed in the side surface of the first-process barrel bottom limiting seat 309; the cylinder bottom 104 and the end cover 103 are transversely pressed by the cylinder bottom limiting seat assembly in the first process through the sliding locking mechanism 313, the welding parts of the cylinder bottom 104 and the end cover 103 are butted, and the cylinder bottom 104 is pressed by the cylinder bottom pressing assembly in the first process.

The second-process clamping unit 4 comprises a second-process bottom plate 401, a second-process cylinder bottom pressing assembly, a second-process end cover supporting seat 404, a second-process cylinder bottom limiting seat assembly and a second-process air inlet flange clamping assembly 402, wherein the second-process end cover supporting seat 404 is positioned on the second-process bottom plate 401, the second-process cylinder bottom limiting seat assembly and the second-process air inlet flange clamping assembly 402 are respectively positioned on two sides of the second-process end cover supporting seat 404, the second-process cylinder bottom limiting seat assembly is connected with the second-process bottom plate 401 through a sliding locking mechanism 313, and the second-process air inlet flange clamping assembly 402 is connected with the second-process bottom plate 401 through a second support 407; the second-procedure barrel bottom limiting seat assembly comprises a second-procedure barrel bottom limiting seat support 409 and a second-procedure barrel bottom limiting seat 408, the second-procedure barrel bottom limiting seat support 409 is positioned on the second-procedure bottom plate 401 in a sliding mode through a sliding locking mechanism 313, and the second-procedure barrel bottom limiting seat 408 is connected with the upper end of the second-procedure barrel bottom limiting seat support 409; the air inlet flange 101 and the air inlet pipe 102 are welded into a whole in advance and then clamped and positioned on the second process air inlet flange clamping assembly 402, the end cover 103 and the cylinder bottom 104 are welded into a whole and then positioned on the second process end cover supporting seat 404, the second process cylinder bottom limiting seat assembly transversely compresses the cylinder bottom 104, the end cover 103, the air inlet pipe 102 and the air inlet flange 101 through the sliding locking mechanism 313, the welding position of the air inlet pipe 102 and the end cover 103 is in butt joint, and the cylinder bottom 104 is compressed through the second process cylinder bottom compressing assembly.

The third-process clamping unit 5 comprises a third-process bottom plate 501, a third-process air inlet flange clamping assembly 503, a third-process connecting ring clamping assembly 505 and a third-process cylinder bottom supporting seat 506, wherein the third-process cylinder bottom supporting seat 506 is positioned on the third-process bottom plate 501, the third-process air inlet flange clamping assembly 503 and the third-process connecting ring clamping assembly 505 are respectively positioned at two sides of the third-process cylinder bottom supporting seat 506, the third-process connecting ring clamping assembly 505 is connected with the third-process bottom plate 501 through a sliding locking mechanism 313, and the third-process air inlet flange clamping assembly 503 is connected with the third-process bottom plate 501 through a third bracket 502; the third process connecting ring clamping assembly 505 includes a connecting ring cylinder 5051, a connecting ring cylinder mounting plate 5052, a base plate 5056, a positioning seat 5055, a connecting ring pressure arm 5053, a connecting ring pressure arm seat 50512, and an internal pressure block 5054, the base plate 5056 is connected to the slide lock mechanism 313 via a sixth bracket 507, the connecting ring cylinder 5051 is connected to the connecting ring cylinder mounting plate 5052, and the front end of a telescopic shaft 50511 of the connecting ring cylinder 5051 penetrates through the connecting ring cylinder mounting plate 5052 and is connected to the base plate 5056, the positioning seat 5055 is connected to the side of the base plate 5056 away from the connecting ring cylinder 5051, the connecting ring pressure arms 5053 are at least three, and the number of the connecting ring pressure arm seats 50512 and the number of the internal pressure blocks 5054 are the same as the number of the connecting ring pressure arms 5053, the connecting ring pressure arm seats 50512 are disposed at the outer edge of the base plate 5056 with the telescopic shaft 50511 as an annular array, the internal pressure blocks 5054 are disposed at the, the position of the inner pressure block 5054 corresponds to the position of the connecting ring pressure arm seat 50512, a chute 50532 is arranged in the middle of the connecting ring pressure arm 5053, an outer pressure block 50531 corresponding to the inner pressure block 5054 is arranged at the front end of the connecting ring pressure arm 5053, the rear end of the connecting ring pressure arm 5053 is hinged to the connecting ring cylinder mounting plate 5052, the middle of the connecting ring pressure arm 5053 is hinged to the connecting ring pressure arm seat 50512 through a first 505hinge shaft 10, and the first hinge shaft 50510 penetrates through the chute 50532 of the connecting ring pressure arm 5053; the rear end of the connecting ring cylinder 5051 is further provided with a connecting ring manual clamping handle 5059, the outer side of the rear end of the connecting ring cylinder 5051 is provided with a connecting ring manual clamping handle positioning seat 5057, the front end of the connecting ring manual clamping handle 5059 is hinged with the connecting ring manual clamping handle positioning seat 5057, and the middle of the connecting ring manual clamping handle 5059 is hinged with the rear end of a telescopic shaft 50511 of the connecting ring cylinder 5051 through a first hinge rod 5058; the telescopic shaft 50511 of the connecting ring cylinder 5051 is manually controlled to be telescopic by a connecting ring manual clamping handle 5059, so that the connecting ring cylinder mounting plate 5052 is far away from or close to the base plate 5056, and the connecting ring pressure arm 5053 is close to or far away from the inner pressing block 5054 under the guiding action of the inclined groove 50532, so that the outer pressing block 50531 and the inner pressing block 5054 are matched to press or release the connecting ring 105 positioned outside the inner pressing block 5054; after the air inlet flange 101, the air inlet pipe 102, the end cover 103 and the cylinder bottom 104 are welded into a whole, the air inlet flange 101 is clamped and positioned on the third-process air inlet flange clamping assembly 503, the cylinder bottom 104 is positioned on the third-process cylinder bottom supporting seat 506, the connecting ring 105 is clamped and positioned on the third-process connecting ring clamping assembly 505, the connecting ring 105 and the cylinder bottom 104 are transversely pressed by the third-process connecting ring clamping assembly 505 through the sliding locking mechanism 313, and the welding part of the connecting ring 105 and the cylinder bottom 104 is butted.

The fourth process clamping unit 6 includes a fourth process base plate 601, a fourth process inlet flange clamping assembly 609, a fourth process cylinder bottom supporting seat 603, a fourth process cylinder bottom pressing assembly 608, a fourth process catalytic part cylinder supporting seat 604, a fourth process catalytic part cylinder pressing assembly 607 and a fourth process catalytic part cylinder limiting seat assembly, the fourth process cylinder bottom supporting seat 603 and the fourth process catalytic part cylinder supporting seat 604 are respectively positioned on the fourth process base plate 601, the fourth process catalytic part cylinder limiting seat assembly is positioned outside the fourth process catalytic part cylinder supporting seat 604 and connected with the fourth process base plate 601 through a sliding locking mechanism 313, and the fourth process inlet flange clamping assembly 609 is positioned outside the fourth process cylinder bottom supporting seat 603 and connected with the fourth process base plate 601 through a fourth bracket 602; the fourth process catalysis part cylinder limiting seat component comprises a catalysis part cylinder limiting seat 606 and a catalysis part cylinder limiting seat support 605, the catalysis part cylinder limiting seat support 605 is positioned on the fourth process bottom plate 601 in a sliding mode through a sliding locking mechanism 313, and the catalysis part cylinder limiting seat 606 is connected with the upper end of the catalysis part cylinder limiting seat support 605; after the air inlet flange 101, the air inlet pipe 102, the end cover 103, the cylinder bottom 104 and the connecting ring 105 are welded into a whole, the air inlet flange 101 is clamped and positioned on a fourth process air inlet flange clamping assembly 609, the cylinder bottom 104 is positioned on a fourth process cylinder bottom supporting seat 603, the cylinder bottom 104 is pressed tightly through a fourth process cylinder bottom pressing assembly 608, the catalytic cylinder 106 is positioned on a fourth process catalytic cylinder supporting seat 604, the catalytic cylinder 106 is pressed tightly through a fourth process catalytic cylinder pressing assembly 607, the catalytic cylinder 106 and the connecting ring 105 are transversely pressed tightly through a sliding locking mechanism 313 by the fourth process catalytic cylinder limiting seat assembly, and the welding part of the catalytic cylinder 106 and the connecting ring 105 is butted.

The fifth process clamping unit 7 includes a fifth process bottom plate 701, a fifth process inlet flange clamping assembly 703, a fifth process bottom support 709, a fifth process catalyst section cylinder support 708, a fifth process outlet cone support 707, and a fifth process outlet flange clamping assembly 705, wherein the fifth process outlet cone support 707, the fifth process catalyst section cylinder support 708, and the fifth process bottom support 709 are sequentially positioned on the fifth process bottom plate 701, the fifth process inlet flange clamping assembly 703 is positioned outside the fifth process bottom support 709 and connected to the fifth process bottom plate 701 through a fifth bracket 702, and the fifth process outlet flange clamping assembly 705 is positioned outside the fifth process outlet cone support 707 and connected to the fifth process bottom plate 701 through a slide locking mechanism 313; the fifth process air outlet flange clamping assembly 705 comprises an air outlet flange cylinder 7051, an air outlet flange cylinder mounting plate 7052, a flange positioning seat 7053, a clamping mechanism connecting rod 7054, a manual operating handle 70512 and flange clamping mechanisms symmetrically arranged on two sides of the air outlet flange cylinder 7051 respectively, wherein the rear end of the air outlet flange cylinder 7051 is connected with the air outlet flange cylinder mounting plate 7052, the flange positioning seat 7053 is connected with one side, far away from the air outlet flange cylinder 7051, of the air outlet flange cylinder mounting plate 7052, the air outlet flange cylinder mounting plate 7052 is connected with a sliding locking mechanism 313 through an air outlet flange cylinder support 706, and the clamping mechanism connecting rod 7054 is connected to the front end of a telescopic rod 70511 of the air outlet flange cylinder 7051; the flange clamping mechanism comprises an air outlet flange pressing arm 7055, an air outlet flange pressing arm seat 7058, an air outlet flange pressing block 7059 and a flange positioning pin 70510, the air outlet flange pressing arm seat 7058 is connected with the outer side of an air outlet flange cylinder 7051, the air outlet flange pressing arm seat 7058 is provided with a sliding groove 7057 extending outwards, the rear end of the air outlet flange pressing arm 7055 is hinged with a clamping mechanism connecting rod 7054, the middle part of the air outlet flange pressing arm 7055 is connected with the air outlet flange pressing arm seat 7058 through a second hinge shaft 7056, the second hinge shaft 7056 is positioned in the sliding groove 7057, the air outlet flange pressing block 7059 is connected with the front end of the air outlet flange pressing arm 7055 and extends to the front side of the flange positioning seat 7053, and the flange positioning seat 7053 is connected with the flange positioning seat 70510 and corresponds to the position of the air outlet; the front end of the manual operating handle 70512 is hinged with the side face of the clamping mechanism connecting rod 7054, the middle part of the manual operating handle 70512 is hinged with the air outlet flange cylinder mounting plate 7052 through a third hinge rod 70513, and the expansion rod 70511 of the air outlet flange cylinder 7051 can be manually controlled to expand and contract through the manual operating handle 70512, so that the air outlet flange pressure arm 7055 is close to or far away from the flange positioning seat 7053 under the guiding action of the sliding groove 7057, and the air outlet flange pressure block 7059 is enabled to tightly press or loosen the air outlet flange 108 positioned on the flange positioning seat 7053; after the air inlet flange 101, the air inlet pipe 102, the end cover 103, the cylinder bottom 104, the connecting ring 105 and the catalytic part cylinder 106 are welded into a whole, the air inlet flange 101 is clamped and positioned on the fifth-process air inlet flange clamping assembly 703, the cylinder bottom 104 is positioned on the fifth-process cylinder bottom supporting seat 709, the catalytic part cylinder 106 is positioned on the fifth-process catalytic part cylinder supporting seat 708, the air outlet cone 107 and the air outlet flange 108 are welded into a whole in advance and then clamped and positioned on the fifth-process air outlet flange clamping assembly 705, the air outlet cone 107 is positioned on the fifth-process air outlet cone supporting seat 707, the fifth-process air outlet flange clamping assembly 705 is enabled to transversely press the air outlet cone 107 and the catalytic part cylinder 106 through the sliding locking mechanism 313, and the welding part of the air outlet cone 107 and the catalytic part cylinder 106 is butted.

The structure of the second-process air inlet flange clamping assembly 402, the third-process air inlet flange clamping assembly 503, the fourth-process air inlet flange clamping assembly 609 and the fifth-process air inlet flange clamping assembly 703 is the same, the structure comprises an air inlet flange clamping cylinder 4021, an air inlet flange positioning plate 4025 and clamping mechanisms which are respectively and symmetrically connected to two sides of the front end of the air inlet flange clamping cylinder 4021, and the air inlet flange positioning plate 4025 is connected with the front end of a telescopic rod of the air inlet flange clamping cylinder 4021; the air inlet flange clamping mechanism comprises a fixing rod 4027, a linkage rod 4028, a steering block 4029, an air inlet flange press block 40210 and an air inlet flange positioning pin 4026, the fixing rod 4027 is connected with the outer side of the front end of an air inlet flange clamping cylinder 4021, the steering block 4029 is L-shaped, the right angle of the steering block 4029 is hinged to the air inlet flange positioning plate 4025, the air inlet flange press block 40210 is connected with one end of the steering block 4029 and located in front of the air inlet flange positioning plate 4025, one end, far away from the air inlet flange press block 40210, of the steering block 4029 is connected with the fixing rod 4027 through the linkage rod 4028, one end of the air inlet flange positioning pin 4026 is connected with the fixing rod 4027, the other end of the air inlet flange positioning pin 4026 penetrates through the air inlet flange positioning plate 4025, and the air; the rear end of the air inlet flange clamping cylinder 4021 is further provided with an air inlet flange manual clamping handle 4022, the outer side of the rear end of the air inlet flange clamping cylinder 4021 is provided with an air inlet flange manual clamping handle positioning seat 4024, the front end of the air inlet flange manual clamping handle 4022 is hinged to the air inlet flange manual clamping handle positioning seat 4024, the middle of the air inlet flange manual clamping handle 4022 is hinged to the rear end of a telescopic rod of the air inlet flange clamping cylinder 4021 through a clamping handle hinged rod 4023, and the telescopic rod of the air inlet flange clamping cylinder 4021 can be manually controlled to stretch through the air inlet flange manual clamping handle 4022.

The sliding locking mechanism 313 of the present invention comprises a bottom plate 3131, a sliding plate 3133, a manual pressing mechanism, a locking cylinder 3134, two sliding rails 3132 and two sliding blocks 31310, wherein the two sliding rails 3132 are arranged in parallel and are respectively connected with the upper end surface of the bottom plate 3131, and the sliding blocks 31310 are respectively matched with the corresponding sliding rails 3132; the sliding plate 3133 is connected with a sliding block 31310, and is slidably positioned on the sliding rail 3132 through the sliding block 31310; the manual pressing mechanism comprises a manual pressing mechanism support 3138, a manual pressing mechanism first connecting rod 3137, a manual pressing mechanism second connecting rod 3139, a poke rod 3136 and a poke handle 3135, the manual pressing mechanism support 3138 is connected to the bottom plate 3131 and is located outside the sliding plate 3133, one end of a first connecting rod 3137 of the manual pressing mechanism is hinged to the manual pressing mechanism support 3138, one end of the first connecting rod 3137 of the manual pressing mechanism, which is far away from the manual pressing mechanism support 3138, is hinged to a second connecting rod 3139 of the manual pressing mechanism, one end of the second connecting rod 3139 of the manual pressing mechanism, which is far away from the first connecting rod 3137 of the manual pressing mechanism, is hinged to an outer side of the sliding plate 3133, the end of the first connecting rod 3137 of the manual pressing mechanism, which is hinged to the second connecting rod 3139 of the manual pressing mechanism, is fixedly connected to a poke, an included angle between the first connecting rod 3137 of the manual pressing mechanism and the poke rod 3136 is larger than 90 degrees, and the poke handle 3135 is vertically connected with the side surface of the upper end of the poke rod 3136; the locking cylinder 3134 is located outside the sliding plate 3133 and connected to the upper end surface of the bottom plate 3131, and an expansion rod of the locking cylinder 3134 is connected to the sliding plate 3133, so that the expansion and contraction of the expansion rod of the locking cylinder 3134 can drive the sliding plate 3133 to slide along the sliding rail 3132.

The first-process cylinder bottom pressing assembly, the second-process cylinder bottom pressing assembly, the fourth-process cylinder bottom pressing assembly 608 and the fourth-process catalytic part cylinder body pressing assembly 607 have the same structure and comprise pressing cylinders 311, pressing cylinder brackets 312, pressing rods 307, first pressing blocks 306 and pressing handles 308, wherein the pressing cylinders 311 are connected with corresponding process bottom plates through the pressing cylinder brackets 312, the pressing rods 307 are connected with rotating shafts of the pressing cylinders 311, the front ends of the pressing rods 307 extend to the upper sides of corresponding pressing parts, the first pressing blocks 306 are connected with the front ends of the pressing rods 307, and the pressing handles 308 are connected with the upper sides of the pressing rods 307.

Further, the second process clamping unit 4 further comprises a first accessory positioning assembly 405 for positioning the first accessory 109, the first attachment positioning assembly 405 is positioned between the second process end cap support base 404 and the second process inlet flange clamp assembly 402, and the first attachment positioning assembly 405 is coupled to the second process floor 401 by a seventh bracket 406, the first accessory positioning component 405 includes a positioning cylinder 4051, a spring 4052 and a positioning pin 4053, the positioning cylinder 4051 is provided with a positioning hole 40512 at the middle part thereof, the positioning cylinder 4051 is provided with a guide groove 40511 at the side thereof, the guide groove 40512 is communicated with the positioning hole 40512, the guide groove 40511 is L-shaped, a guide bar 40531 is vertically connected to the outer side of the positioning pin 4053, the spring 4052 and the positioning pin 4053 are respectively positioned in the positioning holes 40512, the spring 4052 is positioned at the lower side of the positioning pin 4053, the guide bar 40531 is positioned in the guide slot 40511, and the guide bar 40531 can slide in the guide slot 40511; the first attachment 109 is positioned at the upper end of the locating pin 4053, and the locating pin 4053 is adapted to hold the first attachment 109 against the weld with the inlet conduit 102 by sliding the guide bar 40531 along the guide slot 40511.

Further, the second process clamping unit 4 further includes a second accessory clamping assembly 403 for clamping the second accessory 110, the second accessory clamping assembly 403 is connected to the second process base plate 401 through the eighth bracket 4037, and the second accessory clamping assembly 403 is located on the outer side of the cylinder bottom 104; the second accessory clamping assembly 403 comprises a second accessory cylinder 4031, a first connecting plate 4032 and a second accessory clamp 4033, the first connecting plate 4032 is connected with the front end of the telescopic rod of the second accessory cylinder 4031, the second accessory clamp 4033 is connected with the first connecting plate 4032, a manual control handle 4034 is further arranged at the rear end of the second accessory cylinder 4031, a manual control handle positioning seat 4036 is arranged on the outer side of the rear end of the second accessory cylinder 4031, the front end of the manual control handle 4034 is hinged to the manual control handle positioning seat 4036, and the middle part of the manual control handle 4034 is hinged to the rear end of the telescopic rod of the second accessory cylinder 4031 through a control handle hinge rod 4035; the telescopic rod of the second accessory cylinder 4031 can be manually controlled to stretch by the manual control handle 4034, so that the second accessory 110 abuts against the welding part of the cylinder bottom 104 and is kept in an abutting state by the second accessory cylinder 4031.

Further, the third process clamping unit 5 further includes a third accessory positioning assembly 504 for positioning the third accessory 111, the third accessory positioning assembly 504 is connected to the third process base plate 501 through a ninth bracket 508, the third accessory positioning assembly 504 is located outside the connecting ring 105, the third accessory positioning assembly 504 includes a third accessory cylinder 5041, a cylinder block 5042 and an accessory positioning seat 5044, the third accessory cylinder 5041 is connected to the cylinder block 5042, the cylinder block 5042 is connected to the ninth bracket 508, and a telescopic rod front end of the third accessory cylinder 5041 passes through the cylinder block 5042 and is connected to the accessory positioning seat 5044; the rear end of the telescopic rod of the third accessory cylinder 5041 is also connected with a cylinder handle 5045, and the telescopic rod of the third accessory cylinder 5041 can be manually controlled to contract through the cylinder handle 5045, so that the third accessory 111 abuts against the welding position of the connecting ring 105, and the third accessory cylinder 5041 keeps in an abutting state.

Further, the fifth process clamping unit 7 further includes a fourth accessory clamping assembly 704 for clamping and positioning the fourth accessory 112, the fourth accessory clamping assembly 704 is positioned on the fifth process base plate 701 through the first cylinder bracket 7041, and the fourth accessory clamping assembly 704 is positioned outside the catalyst cylinder 106; the fourth accessory clamp assembly 704 includes a first cylinder 7042, a second attachment plate 7043, a fourth accessory clamp 70413, and a manual operating mechanism, the lower end of the second attachment plate 7043 being connected to the telescoping rod of the first cylinder 7042, a fourth accessory clamp 70413 being connected to the upper end of the second attachment plate 7043, the manual operating mechanism comprises a support 7044, a second hinged rod 7045, a first connecting rod 7046 of the manual operating mechanism and a second connecting rod 7047 of the manual operating mechanism, the support 7044 is connected with the outer side of the front end of the first cylinder 7042, one end of the first connecting rod 7046 of the manual operating mechanism is hinged with the support 7044, the other end of the first connecting rod 7046 of the manual operating mechanism is hinged with the second connecting plate 7043 through the second hinged rod 7045, the hinged end parts of the first connecting rod 7046 of the manual operating mechanism and the second hinged rod 7045 of the manual operating mechanism are fixedly connected with the second connecting rod 7047 of the manual operating mechanism, and the included angle between the first link 7046 of the manual operating mechanism and the second link 7047 of the manual operating mechanism is greater than 90 degrees; the second connecting plate 7043 is further provided with an auxiliary clamping mechanism for clamping a connecting pin 1121 on the fourth accessory 112, the auxiliary clamping mechanism comprises a second air cylinder 7048, an auxiliary clamping pressing arm 70410, a clamping handle 7049, an auxiliary clamping pressing seat 70411 and an auxiliary clamping pressing block 70412, the second air cylinder 7048 is fixedly connected with the outer side of the upper end of the second connecting plate 7043, the middle of the auxiliary clamping pressing arm 70410 is hinged with the upper end of the second connecting plate 7043, the rear end of the auxiliary clamping pressing arm 70410 is hinged with a telescopic rod of the second air cylinder 7048, the auxiliary clamping pressing seat 70411 is connected with the second connecting plate 7043 and located on the upper side of the fourth accessory clamp 70413, the auxiliary clamping pressing block 70412 is hinged with the front end of the auxiliary clamping pressing arm 70410, the auxiliary clamping pressing block 70412 corresponds to the auxiliary clamping pressing seat 70411, and the clamping handle 7049 is connected with the middle of the auxiliary clamping pressing arm 70410; the fourth accessory 112 is clamped and fixed on the fourth accessory clamp 70413, the connecting pin 1121 is positioned in the auxiliary clamping pressing seat 70411, the auxiliary clamping pressing arm 70410 is controlled by the clamping handle 7049, so that the auxiliary clamping pressing block 70412 clamps the connecting pin 1121 in the auxiliary clamping pressing seat 70411, and the clamped state is maintained by the second air cylinder 7048; the second connecting plate 7043 is manually controlled by the second connecting rod 7047 of the manual operating mechanism to abut the fourth attachment 112 against the weld with the catalyst portion cylinder 106, and is kept in an abutting state by the first cylinder 7042.

The above embodiments are only preferred embodiments of the present invention, and the structure of the present invention is not limited to the forms of the above embodiments, and any modifications, equivalents and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-way catalyst assembly welding clamp comprises a first positioning seat and a second positioning seat which are arranged on two sides of a welding robot in parallel, wherein the first positioning seat is connected with a first process clamping unit, a second process clamping unit and a third process clamping unit; the method is characterized in that:

2. The three-way catalyst assembly welding jig of claim 1, characterized in that: the structure of the second-process air inlet flange clamping assembly, the third-process air inlet flange clamping assembly, the fourth-process air inlet flange clamping assembly and the fifth-process air inlet flange clamping assembly is the same, the second-process air inlet flange clamping assembly comprises an air inlet flange clamping cylinder, an air inlet flange positioning plate and air inlet flange clamping mechanisms which are symmetrically connected to two sides of the front end of the air inlet flange clamping cylinder respectively, and the air inlet flange positioning plate is connected with the front end of a telescopic rod of the air inlet flange clamping cylinder; the air inlet flange clamping mechanism comprises a fixed rod, a linkage rod, a steering block, an air inlet flange pressing block and an air inlet flange positioning pin, the fixed rod is connected with the outer side of the front end of an air inlet flange clamping cylinder, the steering block is L-shaped, the right angle of the steering block is hinged with an air inlet flange positioning plate, the air inlet flange pressing block is connected with one end of the steering block and is positioned on the front side of the air inlet flange positioning plate, one end, away from the air inlet flange pressing block, of the steering block is connected with the fixed rod through the linkage rod, one end of the air inlet flange positioning pin is connected with the fixed rod, the other end of the air inlet flange positioning pin penetrates through the air inlet flange positioning; the rear end of the air inlet flange clamping cylinder is also provided with an air inlet flange manual clamping handle, the outer side of the rear end of the air inlet flange clamping cylinder is provided with an air inlet flange manual clamping handle positioning seat, the front end of the air inlet flange manual clamping handle is hinged with the air inlet flange manual clamping handle positioning seat, the middle part of the air inlet flange manual clamping handle is hinged with the rear end of a telescopic rod of the air inlet flange clamping cylinder through a clamping handle hinge rod, and the telescopic rod of the air inlet flange clamping cylinder can be manually controlled to stretch through the air inlet flange manual clamping handle.

3. The three-way catalyst assembly welding jig of claim 1, characterized in that: the sliding locking mechanism comprises a bottom plate, a sliding plate, a manual pressing mechanism, a locking cylinder, two sliding rails and two sliding blocks, wherein the two sliding rails are arranged in parallel and are respectively connected with the upper end surface of the bottom plate, and the sliding blocks are respectively matched with the corresponding sliding rails; the sliding plate is connected with the sliding block and is positioned on the sliding rail in a sliding manner through the sliding block; the manual pressing mechanism comprises a manual pressing mechanism support, a manual pressing mechanism first connecting rod, a manual pressing mechanism second connecting rod, a poking rod and a poking handle, the manual pressing mechanism support is connected with the bottom plate and located on the outer side of the sliding plate, one end of the manual pressing mechanism first connecting rod is hinged to the manual pressing mechanism support, one end, away from the manual pressing mechanism support, of the manual pressing mechanism first connecting rod is hinged to the manual pressing mechanism second connecting rod, one end, away from the manual pressing mechanism first connecting rod, of the manual pressing mechanism second connecting rod is hinged to the outer side edge of the sliding plate, the end portion, hinged to the manual pressing mechanism first connecting rod and the manual pressing mechanism second connecting rod, of the manual pressing mechanism first connecting rod is fixedly connected with the poking rod, the included angle between the manual pressing mechanism first connecting rod and the poking rod is larger than 90 degrees, and the poking handle is; the locking cylinder is located the slide outside and is connected with the bottom plate up end, and the telescopic link and the slide of locking cylinder are connected, and telescopic link through the locking cylinder is flexible can drive the slide and slide along the slide rail.

4. The three-way catalyst assembly welding jig of claim 1, characterized in that: the third process connecting ring clamping assembly comprises a connecting ring air cylinder, a connecting ring air cylinder mounting plate, a substrate, positioning seats, connecting ring pressure arms, a connecting ring pressure arm seat and inner pressure blocks, the substrate is connected with the sliding locking mechanism through a sixth support, the connecting ring air cylinder is connected with the connecting ring air cylinder mounting plate, the front ends of telescopic shafts of the connecting ring air cylinders penetrate through the connecting ring air cylinder mounting plate and are connected with the substrate, the positioning seats are connected with one side, away from the connecting ring air cylinder, of the substrate, the number of the connecting ring pressure arms is at least three, the number of the connecting ring pressure arm seat and the number of the inner pressure blocks are the same as that of the connecting ring pressure arms, the connecting ring pressure arm seat takes the telescopic shafts as a circle center annular array to be arranged at the position close to the outer edge of the substrate, the inner pressure blocks take the telescopic shafts as a circle center annular array to be arranged at the position close to the, the front end of the connecting ring pressure arm is provided with an external pressure block corresponding to the internal pressure block, the rear end of the connecting ring pressure arm is hinged with the connecting ring air cylinder mounting plate, the middle part of the connecting ring pressure arm is hinged with a connecting ring pressure arm seat through a first hinge shaft, and the first hinge shaft penetrates through a chute of the connecting ring pressure arm; the rear end of the connecting ring cylinder is also provided with a connecting ring manual clamping handle, a connecting ring manual clamping handle positioning seat is arranged on the outer side of the rear end of the connecting ring cylinder, the front end of the connecting ring manual clamping handle is hinged with the connecting ring manual clamping handle positioning seat, and the middle part of the connecting ring manual clamping handle is hinged with the rear end of a telescopic shaft of the connecting ring cylinder through a first hinge rod; but the telescopic shaft of manual control go-between cylinder is flexible through the manual clamping handle of go-between for go-between cylinder mounting panel is kept away from or is close to the base plate, and go-between pressure arm is close to or keeps away from interior briquetting under the guide effect of chute, thereby makes outer briquetting and interior briquetting cooperation compress tightly or loosen the go-between of locating in the briquetting outside.

5. The three-way catalyst assembly welding jig of claim 1, characterized in that: the fifth process air outlet flange clamping assembly comprises an air outlet flange cylinder, an air outlet flange cylinder mounting plate, a flange positioning seat, a clamping mechanism connecting rod, a manual operating handle and flange clamping mechanisms which are symmetrically arranged on two sides of the air outlet flange cylinder respectively, the rear end of the air outlet flange cylinder is connected with the air outlet flange cylinder mounting plate, the flange positioning seat is connected with one side, away from the air outlet flange cylinder, of the air outlet flange cylinder mounting plate, the air outlet flange cylinder mounting plate is connected with a sliding locking mechanism through an air outlet flange cylinder support, and the clamping mechanism connecting rod is connected to the front end of a telescopic rod of the air outlet flange cylinder; the flange clamping mechanism comprises an air outlet flange pressing arm, an air outlet flange pressing arm seat, an air outlet flange pressing block and a flange positioning pin, the air outlet flange pressing arm seat is connected with the outer side of an air outlet flange cylinder, the air outlet flange pressing arm seat is provided with a sliding groove extending outwards, the rear end of the air outlet flange pressing arm is hinged with a clamping mechanism connecting rod, the middle part of the air outlet flange pressing arm is connected with the air outlet flange pressing arm seat through a second hinged shaft, the second hinged shaft is positioned in the sliding groove, the air outlet flange pressing block is connected with the front end of the air outlet flange pressing arm and extends to the front side of a flange positioning seat, and the flange positioning pin is connected with the flange positioning seat and corresponds to the position of; the front end of the manual control handle is hinged with the side face of the connecting rod of the clamping mechanism, the middle of the manual control handle is hinged with the air outlet flange cylinder mounting plate through a third hinge rod, and the expansion rod of the air outlet flange cylinder can be manually controlled to stretch through the manual control handle, so that the air outlet flange pressure arm is close to or far away from the flange positioning seat under the guiding action of the sliding groove, and the air outlet flange pressing block is pressed or loosened to position the air outlet flange on the flange positioning seat.

6. The three-way catalyst assembly welding jig of claim 1, characterized in that: the first process barrel bottom pressing assembly, the second process barrel bottom pressing assembly, the fourth process barrel bottom pressing assembly and the fourth process catalysis part barrel pressing assembly are the same in structure and comprise pressing cylinders, pressing cylinder supports, pressing rods, first pressing blocks and pressing handles, the pressing cylinders are connected with corresponding process bottom plates through the pressing cylinder supports, the pressing rods are connected with rotating shafts of the pressing cylinders, the front ends of the pressing rods extend to the upper sides of corresponding pressing parts, the first pressing blocks are connected with the front ends of the pressing rods, and the pressing handles are connected with the upper sides of the pressing rods.

7. The three-way catalyst assembly welding jig of claim 1, characterized in that: the second process clamping unit further comprises a first accessory positioning component for positioning a first accessory, the first accessory positioning component is positioned between the second process end cover supporting seat and the second process air inlet flange clamping component and is connected with the second process bottom plate through a seventh support, the first accessory positioning component comprises a positioning barrel, a spring and a positioning pin, a positioning hole with a closed lower end is formed in the middle of the positioning barrel, a guide groove communicated with the positioning hole is formed in the side face of the positioning barrel and is L-shaped, a guide rod is vertically connected to the outer side of the positioning pin, the spring and the positioning pin are respectively positioned in the positioning hole, the spring is positioned on the lower side of the positioning pin, the guide rod is positioned in the guide groove, and the guide rod can slide in the guide groove; the first accessory is positioned at the upper end of the positioning pin, and the positioning pin can enable the first accessory to abut against the welding position of the air inlet pipe by poking the guide rod to slide along the guide groove.

8. The three-way catalyst assembly welding jig of claim 1, characterized in that: the second process clamping unit further comprises a second accessory clamping assembly for clamping a second accessory, the second accessory clamping assembly is connected with the second process base plate through an eighth bracket, and the second accessory clamping assembly is positioned on the outer side of the cylinder bottom; the second accessory clamping assembly comprises a second accessory cylinder, a first connecting plate and a second accessory clamp, the first connecting plate is connected with the front end of a telescopic rod of the second accessory cylinder, the second accessory clamp is connected with the first connecting plate, a manual control handle is further arranged at the rear end of the second accessory cylinder, a manual control handle positioning seat is arranged on the outer side of the rear end of the second accessory cylinder, the front end of the manual control handle is hinged to the manual control handle positioning seat, and the middle of the manual control handle is hinged to the rear end of the telescopic rod of the second accessory cylinder through a control handle hinge rod; the telescopic rod of the second accessory cylinder can be manually controlled to stretch through the manual control handle, so that the second accessory abuts against the welding position with the cylinder bottom, and the second accessory cylinder keeps an abutting state.

9. The three-way catalyst assembly welding jig of claim 1, characterized in that: the third process clamping unit further comprises a third accessory positioning assembly for positioning a third accessory, the third accessory positioning assembly is connected with the third process bottom plate through a ninth support and positioned on the outer side of the connecting ring, the third accessory positioning assembly comprises a third accessory cylinder, a cylinder seat and an accessory positioning seat, the third accessory cylinder is connected with the cylinder seat, the cylinder seat is connected with the ninth support, and the front end of a telescopic rod of the third accessory cylinder penetrates through the cylinder seat and is connected with the accessory positioning seat; the rear end of the telescopic rod of the third accessory cylinder is further connected with a cylinder handle, and the telescopic rod of the third accessory cylinder can be manually controlled to contract through the cylinder handle, so that the third accessory abuts against the welding position of the connecting ring, and the third accessory cylinder keeps an abutting state.

10. The three-way catalyst assembly welding jig of claim 1, characterized in that: the fifth procedure clamping unit further comprises a fourth accessory clamping assembly for clamping and positioning a fourth accessory, the fourth accessory clamping assembly is positioned on the fifth procedure bottom plate through the first cylinder support, and the fourth accessory clamping assembly is positioned on the outer side of the catalytic part cylinder; the fourth accessory clamping assembly comprises a first air cylinder, a second connecting plate, a fourth accessory clamp and a manual operating mechanism, the lower end of the second connecting plate is connected with an expansion link of the first air cylinder, the fourth accessory clamp is connected with the upper end of the second connecting plate, the manual operating mechanism comprises a support, a second hinged rod, a first connecting rod of the manual operating mechanism and a second connecting rod of the manual operating mechanism, the support is connected with the outer side of the front end of the first air cylinder, one end of the first connecting rod of the manual operating mechanism is hinged with the support, the other end of the first connecting rod of the manual operating mechanism is hinged with the second connecting plate through the second hinged rod, the end part of the first connecting rod of the manual operating mechanism, which is hinged with the second hinged rod, is fixedly connected with the second connecting rod of the manual operating mechanism, and the included angle between the first connecting rod of the manual operating mechanism and the second connecting rod of the manual operating mechanism; the second connecting plate is also provided with an auxiliary clamping mechanism for clamping a connecting pin on a fourth accessory, the auxiliary clamping mechanism comprises a second air cylinder, an auxiliary clamping pressure arm, a clamping handle, an auxiliary clamping pressure seat and an auxiliary clamping pressing block, the second air cylinder is fixedly connected with the outer side of the upper end of the second connecting plate, the middle of the auxiliary clamping pressure arm is hinged with the upper end of the second connecting plate, the rear end of the auxiliary clamping pressure arm is hinged with a telescopic rod of the second air cylinder, the auxiliary clamping pressure seat is connected with the second connecting plate and positioned on the upper side of the fourth accessory clamp, the auxiliary clamping pressing block is hinged with the front end of the auxiliary clamping pressure arm, the position of the auxiliary clamping pressing block corresponds to the auxiliary clamping pressure seat, and the clamping handle is connected with the middle of the auxiliary clamping pressure arm; the fourth accessory clamp is fixedly clamped on the fourth accessory clamp, the connecting pin is positioned in the auxiliary clamping pressure seat, the auxiliary clamping pressure arm is controlled through the clamping handle, so that the auxiliary clamping pressure block clamps the connecting pin in the auxiliary clamping pressure seat, and the clamping state is kept through the second air cylinder; the second connecting plate is manually controlled by a second connecting rod of the manual control mechanism to enable the fourth accessory to abut against the welding position of the catalytic part cylinder, and the abutting state is kept through the first air cylinder.