CN218487629U - EGR cooler spot welding equipment - Google Patents

Abstract

The application discloses spot welding equipment for an EGR cooler, which comprises a body frame and a welding device, wherein a plurality of clamping stations corresponding to a to-be-welded part are formed on the body frame; a base is arranged on the body frame, and a vertical rotating mechanism, a vertical limiting mechanism and a clamping mechanism are arranged on the base; the vertical rotating mechanism comprises a rotating shaft and a handle connected with one end of the rotating shaft, and a clamping plate is arranged on the rotating shaft; the vertical limiting mechanism limits the rotating angle of the rotating shaft; the clamping mechanism is used for clamping and fixing a part to be welded on a clamping station; and the welding device performs spot welding on the part to be welded on the clamping station. The application provides an EGR cooler spot welding equipment realizes treating the concentrated spot welding of welding piece to each of constituteing the EGR cooler, and the cooperation through vertical rotary mechanism and vertical stop gear is to treating on the clamping station that the welding piece carries out multi-angle rotating, and the work piece conveying is simple, concentrates spot welding to increase substantially the size control precision, reduces work piece circulation time, improves machining efficiency.

Description

EGR cooler spot welding equipment

Technical Field

The application relates to the technical field of automatic spot welding of engine parts, in particular to spot welding equipment for an EGR cooler.

Background

EGR (Exhaust Gas Recirculation) refers to an Exhaust Gas Recirculation system. EGR comprises an EGR cooler, which is a device provided for reducing NOx emissions from the exhaust gases of a motor vehicle. At higher speeds, the vehicle redirects a small amount of exhaust gas into the intake valve, with lower exhaust gas temperatures having better NOx suppression of the engine. The EGR cooler can lower the temperature of exhaust gas entering the cylinder, reducing NOx emissions.

The EGR cooler structure is mainly a shell and tube structure, wherein a threaded pipe is used for heat exchange, namely, grooves and raised threaded grooves are formed in the surface of a pipe blank, and the structure enables the heat exchange area to be greatly increased, so that the heat exchange efficiency of the EGR cooler is greatly improved. Existing EGR coolers include structures such as a tube shell, a diffuser, a collector, a water tube, a large bracket, a small bracket, etc. which need to be welded together during the manufacturing assembly process. The frock that has to be used for welding the EGR cooler can be divided into three spot welding processes, first process: spot welding the pipe shell, the diffuser, the collector and the large support by using a first set of tooling to obtain a primary machined part; the second procedure: conveying the primary machined part to a second set of tooling, and welding a small support on the primary machined part by using the second set of tooling to obtain a secondary machined part; a third procedure: and conveying the secondary workpiece to a third set of tool, and welding a water pipe on the secondary workpiece by using the third set of tool to finish welding to obtain the EGR cooler. Therefore, the existing tooling equipment for welding the EGR cooler at least comprises three sets of equipment, the whole machining process is complicated, the logistics conveying of the machined parts occupies certain time and space, and the three sets of welding tooling equipment have large accumulated errors and low efficiency.

Therefore, it is necessary to provide a new technical solution to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The application provides EGR cooler spot welding equipment to solve the problem that EGR cooler welding process accumulative total error is big, inefficiency at present stage.

In order to achieve the above object, the present application provides the following technical solutions:

the application provides spot welding equipment for an EGR cooler, which comprises a body frame, wherein a plurality of clamping stations corresponding to-be-welded parts are formed on the body frame;

the body frame is provided with a base, and the base is provided with a vertical rotating mechanism, a vertical limiting mechanism and a clamping mechanism; the vertical rotating mechanism comprises a rotating shaft and a handle arranged at one end of the rotating shaft, a clamping plate is arranged on the rotating shaft, and the clamping mechanism is arranged on the clamping plate; the rotating handle rotates, and the vertical limiting mechanism limits the rotating angle of the rotating shaft;

a plurality of clamping stations are formed on the clamping plate, and the clamping mechanism is used for clamping and fixing a part to be welded on the clamping stations;

the welding device is used for carrying out spot welding on the parts to be welded on each clamping station.

The technical scheme is further that the base is relatively provided with two support frames, one end of each support frame, which deviates from the base, is provided with a bearing seat, and two ends of the rotating shaft are respectively installed in the bearing seats.

Furthermore, one end of the rotating shaft penetrates through the bearing seat and is connected with the handle.

Further, the clamping plate and the base are parallel and are arranged at intervals, and the clamping plate is located between the two support frames.

Furthermore, the vertical rotating mechanism further comprises a rotary bearing arranged in the bearing seat, the rotary bearing is embedded in the bearing seat, and the rotary bearing is connected with the rotating shaft in a matching manner.

Furthermore, be close to install the gyration limiting plate on the bearing frame of handle, the gyration limiting plate sets up the both sides at the support frame with the handle is relative, is provided with the through-hole that allows the rotation axis to pass on the gyration limiting plate, evenly distributed has a plurality of spacing holes on the gyration limiting plate, and a plurality of spacing holes are cyclic annular around establishing the rotation axis is all around, spacing hole is close to the edge of gyration limiting plate.

Furthermore, a plurality of plug holes are arranged on the bearing seat close to the handle, the plug holes correspond to the limiting holes one by one, a limiting pin is inserted into one limiting hole and the corresponding plug hole, and the limiting pin is used for limiting the rotation angle of the clamping plate.

Furthermore, the clamping mechanism comprises a first clamping component and a second clamping component which are arranged on the clamping plate, and the first clamping component and the second clamping component are oppositely arranged on two sides of the clamping plate.

Furthermore, first clamping component sets up on the last face of clamping plate, and first clamping component includes first clamping plate, be provided with two support columns on a curb plate face of first clamping plate relatively, be connected with the connecting plate on two support columns, the connecting plate sets up with first clamping plate relatively.

Furthermore, two connecting rods are oppositely arranged on the connecting plate, one end of each connecting rod penetrates through the connecting plate to be connected with the first clamping plate, and the other end of each connecting rod is connected with a rod-shaped structural member.

Furthermore, a through hole is further formed in the connecting plate, a bearing is installed in the through hole, a clamping rod is installed on the bearing in a matched mode, the clamping rod penetrates through a bearing hole in the bearing to be connected with the first clamping plate, a plug jack is formed in the first clamping plate, and the clamping rod is correspondingly inserted into the plug jack.

Further, the clamping rod deviates from the rotating wheel is installed at the end part of the first clamping plate, a mounting hole is formed in the center position of the rotating wheel, the clamping rod is installed in the mounting hole, three supporting rods are arranged on the rotating wheel and located on the same plane, and 120 included angles are formed between the three supporting rods and the same plane.

Furthermore, the second clamping assembly is arranged below the clamping plate and comprises a limiting part, a second clamping part and a second clamping rod connected with the second clamping part, the second clamping part is of a cylindrical structure, the second clamping part is sleeved on the limiting part, the limiting part is arranged below the clamping plate, and a through groove allowing the second clamping part to pass through is formed in the limiting part; one side of the second clamping piece, which is far away from the clamping plate, is provided with a mounting hole, and a nut is arranged in the mounting hole; one end of the second clamping rod penetrates through the nut and is connected with the limiting part, the other end of the second clamping rod is provided with a slender rod piece, the second clamping rod is in threaded fit with the nut, and when the slender rod piece is rotated, the second clamping piece slides up and down along the central axis of the second clamping rod under the driving of the nut.

Further, the parts to be welded comprise a diffuser, a collector, a pipe shell, a water pipe and a bracket.

Furthermore, a diffuser clamping station, a collector clamping station, a tube shell clamping station, a water pipe clamping station and a support clamping station are formed on the clamping plate, a pin hole for positioning is formed in each clamping station, and the pin holes are connected with the pins in an adaptive mode.

Furthermore, the clamping mechanism is used for clamping and positioning the to-be-welded parts on each clamping station, and the to-be-welded water pipes on the water pipe clamping stations are pushed to the positioning surfaces by the clamping mechanism.

Further, welding set sets up around the body frame, welding set includes welding robot, welding robot has welding arm and drive the drive structure of welding arm action, the driven removal of welding arm extremely clamping station department, and right the piece of treating of clamping station department corresponds the spot welding.

Compared with the prior art, the method has the following beneficial effects:

1. the application provides an EGR cooler spot welding equipment, including body frame and welding set, be formed with in the body frame with treat the clamping station that the weldment corresponds, install the base in the body frame, install vertical rotary mechanism on the base, vertical stop gear and clamping mechanism, clamping mechanism can realize fixed to the clamping of the weldment of treating on the clamping station, vertical rotary mechanism includes rotation axis and clamping board, form a plurality of clamping stations on the clamping board, welding set can treat on the clamping station that the weldment carries out spot welding, can carry out multistage rotation to the angle of the weldment of treating on the clamping station through vertical rotary mechanism and vertical stop gear's cooperation, the spot welding operation of being convenient for. Consequently, the EGR cooler spot welding equipment that this application provided is through concentrating a plurality of clamping stations that set up, with the welding point position set up in concentrated, the conveying is simple between the work piece, realizes the position conversion to the work piece through vertical rotary mechanism, and then with welding set cooperation spot welding, realizes treating the concentrated spot welding of welding piece to each of constituteing the EGR cooler, and the work piece conveying is simple, and concentrated spot welding can increase substantially the size control precision, reduces the work piece circulation time, improves machining efficiency.

2. The application provides a welding set of EGR cooler spot welding equipment can be auxiliary robot, through auxiliary robot cooperation welding, can further promote efficiency, through the test, under auxiliary robot's the holding, the spot welding efficiency of spot welding equipment that this application provided is traditional carries out 8 ~ 9 times of the efficiency of spot welding through three sets of spot welding frocks. When carrying out manual spot welding through welding personnel, through the test, the spot welding efficiency of the spot welding equipment that this application provided is the traditional efficiency of carrying out spot welding through three sets of spot welding frock 1.5 ~ 2 times.

3. The application provides a location of realization baffling board and tube that EGR cooler spot welding equipment can be quick, accurate to the cooperation resistance welds the welding that realizes tube and baffling board, very big increase welding dimension precision and stability, improved the efficiency of baffling board installation procedure, can realize the concentrated batch welding dress of baffling board and tube.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. It should be understood that the specific shapes, configurations and illustrations in the drawings are not to be construed as limiting, in general, the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimization of the add/drop/attribute division, specific shapes, positional relationships, connection manners, size ratios, etc. of certain elements (components) based on the technical concepts disclosed in the present application and the exemplary drawings.

FIG. 1 is a schematic diagram of an EGR cooler spot welding apparatus provided by the present application in a first view according to one embodiment;

FIG. 2 is a schematic diagram of an EGR cooler spot welding apparatus provided by the present application from a second perspective in one embodiment;

FIG. 3 is a schematic view of an EGR cooler spot welding apparatus according to another embodiment from a first perspective;

FIG. 4 is a schematic view of an EGR cooler spot welding apparatus according to another embodiment from a second perspective;

FIG. 5 is a schematic view of an EGR cooler spot welding apparatus from a third perspective according to another embodiment;

fig. 6 is a schematic structural diagram of an EGR cooler spot welding device provided by the present application from a fourth perspective in another embodiment.

Description of reference numerals:

1. a body frame; 2. a base; 3. a rotating shaft; 4. a slew bearing; 5. a limiting disc; 6. a spacing pin; 7. a turntable; 8. a support frame; 9. a bearing seat; 10. a rotating shaft; 11. a handle; 12. a rotation limiting plate; 13. a spacing pin; 14. installing a clamping plate; 15. a first clamping plate; 16. a support pillar; 17. a connecting plate; 18. a connecting rod; 19. a clamping lever; 20. a rotating wheel; 21. a second clamping member; 22. a nut; 23. a second clamping bar; 24. and a limiting member.

Detailed Description

The present application will be described in further detail below with reference to specific embodiments thereof, with reference to the accompanying drawings.

In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish one referenced item from another without having a special meaning in technical connotation (e.g., should not be construed as emphasizing a degree or order of importance, etc.). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).

In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are generally used for easy visual understanding with reference to the drawings, and are not intended to absolutely limit the positional relationship in an actual product. Changes in these relative positional relationships are also considered to be within the scope of the present disclosure without departing from the technical concepts disclosed in the present disclosure.

Example one

The embodiment provides spot welding equipment for an EGR cooler, and aims to solve the problems of large accumulated error and low efficiency of the welding process of the EGR cooler at the current stage.

Referring to fig. 1 to 2, the spot welding equipment for the EGR cooler provided by the application comprises a body frame 1, wherein a plurality of clamping stations corresponding to parts to be welded are formed on the body frame 1.

A base 2 is arranged on the body frame 1, and a vertical rotating mechanism, a vertical limiting mechanism and a clamping mechanism are arranged on the base 2; the vertical rotating mechanism comprises a rotating shaft 10 and a handle 11 arranged at one end of the rotating shaft 10, a clamping plate 14 is arranged on the rotating shaft 10, and the clamping mechanism is arranged on the clamping plate 14; the handle 11 is rotated, the rotating shaft 10 rotates, and the vertical limiting mechanism realizes the limitation of the rotating angle of the rotating shaft 10. A plurality of clamping stations are formed on the clamping plate 14, and the clamping mechanism clamps and fixes the parts to be welded on the clamping stations. The EGR cooler spot welding equipment further comprises a welding device, and the welding device is used for carrying out spot welding on the parts to be welded on each clamping station.

The EGR cooler spot welding equipment that this embodiment provided is through concentrating a plurality of clamping stations that set up, with the welding point position set up in concentration, the conveying is simple between the work piece, can realize the position conversion to the work piece through vertical rotary mechanism, and then spot welding with the welding set cooperation realizes treating the concentrated spot welding of welding to each of constituteing the EGR cooler, and the work piece conveying is simple, and concentrated spot welding can increase substantially the size control precision, reduces the work piece circulation time, improves machining efficiency.

Two supporting frames are oppositely arranged on the base, a bearing seat is arranged at one end of each supporting frame, which deviates from the base, and two ends of the rotating shaft are respectively arranged in the bearing seats. One end of the rotating shaft passes through the bearing seat and is connected with the handle. The clamping plate is parallel to the base and arranged at an interval oppositely, and the clamping plate is positioned between the two supporting frames.

The vertical rotating mechanism further comprises a rotary bearing arranged in the bearing block, the rotary bearing is embedded in the bearing block, and the rotary bearing is connected with the rotating shaft in a matched mode.

The clamping mechanism comprises a first clamping component and a second clamping component which are arranged on the clamping plate, and the first clamping component and the second clamping component are oppositely arranged on two sides of the clamping plate; the clamping mechanism realizes clamping and fixing of a part to be welded on the clamping station.

The EGR cooler spot welding equipment that this embodiment provided can realize the multi-angle rotating to the clamping plate through vertical rotary mechanism and vertical stop gear, and then makes the clamping station on the clamping plate rotate, drives the piece of waiting to weld on the clamping station and make a round trip to rotate in vertical plane to adjust to best welding angle.

Example two

Compared with the EGR cooler spot welding equipment provided by the embodiment, the horizontal rotating mechanism and the rotating limiting mechanism are additionally arranged on the base, so that the clamping plate can rotate back and forth in the horizontal plane direction, and the rotating angle range is enlarged.

Referring to fig. 3 to 6, the spot welding equipment for the EGR cooler provided by the application comprises a body frame 1, wherein a plurality of clamping stations corresponding to parts to be welded are formed on the body frame 1.

A base 2 is arranged on the body frame 1, and a horizontal swing mechanism and a swing limiting mechanism are arranged on the base 2; the horizontal slewing mechanism comprises a slewing driving piece, a slewing shaft 3 and a rotary table 7 arranged at one end of the slewing shaft 3, and the slewing shaft 3 drives the rotary table 7 to rotate under the driving of the slewing driving piece; the rotation limiting mechanism comprises one or more limiting parts, the limiting parts are arranged around the rotating shaft 3, and the limiting parts can be limiting pins to limit the rotating angle of the rotating shaft. A vertical rotating mechanism, a vertical limiting mechanism and a clamping mechanism are arranged above the rotary table 7; the vertical rotating mechanism comprises a rotating shaft 10 and a handle 11 arranged at one end of the rotating shaft 10, a clamping plate 14 is arranged on the rotating shaft 10, and the clamping mechanism is arranged on the clamping plate 14; the handle 11 is rotated, the rotating shaft 10 rotates, and the vertical limiting mechanism realizes the limitation of the rotating angle of the rotating shaft 10. A plurality of clamping stations are formed on the clamping plate 14, and the clamping mechanism clamps and fixes the parts to be welded on the clamping stations. The spot welding equipment for the EGR cooler further comprises a welding device, and the welding device is used for performing spot welding on the parts to be welded on each clamping station.

The application provides an EGR cooler spot welding equipment is through concentrating a plurality of clamping stations that set up, with the welding point position set up in concentration, the conveying is simple between the work piece, can realize the position conversion to the work piece through vertical rotary mechanism and horizontal rotation mechanism, and then spot welding is cooperated with welding set, realizes treating the concentrated spot welding of welding piece to each of constituteing the EGR cooler, and the work piece conveying is simple, and concentrated spot welding can increase substantially the size control precision, reduces the work piece circulation time, improves machining efficiency.

In an embodiment, referring to fig. 6, the horizontal rotating mechanism of the EGR cooler spot welding device provided by the present application further includes a rotating base fittingly installed with the rotating shaft 3, the rotating base is formed with an installation hole, the rotating shaft 3 is fittingly connected with the rotating bearing 4, and the installation hole is fittingly installed with the rotating bearing 4. The rotary driving part comprises a rotary driving motor, and the power output end of the rotary driving motor is connected with the rotary shaft 3. The power output end of the rotary driving motor can be directly connected with the rotary shaft 3, and a power transmission route can be formed through middle connecting pieces such as a coupler and the like.

In one embodiment, referring to fig. 3 and 6, the rotation limiting mechanism includes a limiting disc 5 disposed on the base 2, the limiting disc 5 is an annular structural member, the limiting disc 5 is mounted on the rotation shaft 3, a plurality of limiting holes are uniformly disposed on the limiting disc 5, the plurality of limiting holes are annularly distributed around the rotation shaft 3, and a limiting pin 6 is inserted into the limiting hole. The surface of the rotary table 7 facing the base 2 is provided with a plurality of limiting jacks, the limiting jacks correspond to the limiting jacks one by one, one end of the limiting pin 6 is inserted into the limiting jack, and the other end of the limiting pin is inserted into the limiting jack. In the rotating process of the rotating shaft 3, the limiting pin 6 limits the rotating angle of the rotating platform 7.

In an embodiment, with continued reference to fig. 3, two supporting frames 8 are oppositely disposed on the turntable 7, a bearing seat 9 is disposed at one end of the supporting frame 8 facing away from the turntable 7, and two ends of the rotating shaft 10 are respectively installed in the bearing seats 9. Referring to the drawings, one end of a rotary shaft 10 is connected to a handle 11 through a bearing housing 9. The vertical rotating mechanism further comprises a rotary bearing arranged in the bearing block 9, the rotary bearing is embedded in the bearing block 9, and the rotary bearing is connected with the rotating shaft 10 in a matching mode.

In one embodiment, referring to fig. 3 and 6, a rotation limiting plate 12 is installed on a bearing seat 9 disposed at one end of a rotating shaft 10 connected to a handle 11, the rotation limiting plate 12 is disposed at two sides of a supporting frame 8 opposite to the handle 11, a through hole allowing the rotating shaft 10 to pass through is disposed on the rotation limiting plate 12, a plurality of limiting holes are uniformly distributed on the rotation limiting plate 12, and are annularly wound around the rotating shaft 10, and the limiting holes are close to the edge of the rotation limiting plate 12.

The bearing seat 9 is provided with a plurality of plug holes, the plug holes correspond to the limiting holes one by one, at least one limiting hole and the corresponding plug hole are inserted with a limiting pin 13, and the limiting pin 13 is used for limiting the rotation angle of the clamping plate 14.

In one embodiment, the bearing seats on the two support frames are provided with rotation limiting plates.

In one embodiment, referring to fig. 6, the clamping plate 14 is arranged parallel to and opposite the turntable 7 at a distance, the clamping plate 14 being located between the two supports 8.

In one embodiment, the parts to be welded include diffusers, collectors, pipe housings, water pipes and brackets. Correspondingly, a diffuser clamping station, a collector clamping station, a tube shell clamping station, a water pipe clamping station and a bracket clamping station are formed on the clamping plate 14, and each clamping station is provided with a pin hole for positioning, and the pin holes are in adaptive connection with the pins.

In one embodiment, the clamping mechanism is used for clamping and positioning the to-be-welded parts on each clamping station and pushing the to-be-welded water pipes on the water pipe clamping stations to the positioning surface.

In one embodiment, the clamping mechanism includes first and second clamping assemblies disposed on the clamping plate 14 opposite each other on opposite sides of the clamping plate 14. Referring to fig. 1, the first clamping assembly is arranged on an upper plate surface of the clamping plate 14, the first clamping assembly includes a first clamping plate 15, two support columns 16 are oppositely arranged on one side plate surface of the first clamping plate 15, a connecting plate 17 is connected to the two support columns 16, the connecting plate 17 is oppositely arranged with the first clamping plate 15, two connecting rods 18 are oppositely arranged on the connecting plate 17, one end of each connecting rod 18 penetrates through the connecting plate 17 to be connected with the first clamping plate 15, and the other end of each connecting rod 18 is connected with a rod-shaped structural member; the connecting plate 17 is further provided with a through hole, a bearing is installed in the through hole, a clamping rod 19 is installed on the bearing in a matched mode, the clamping rod 19 penetrates through a bearing hole in the bearing to be abutted against the first clamping plate 15, the first clamping plate 15 is provided with a plug jack, and the clamping rod 19 is correspondingly inserted into the plug jack. The clamping rod 19 deviates from the end part of the first clamping plate 15, a rotating wheel 20 is installed at the center position of the rotating wheel 20, the clamping rod 19 is installed in the installing hole, three support rods are arranged on the rotating wheel 20 and located on the same plane, and 120 included angles are formed between the three support rods.

In one embodiment, referring to fig. 5 and 6, the second clamping assembly is disposed below the clamping plate 14, the second clamping assembly includes a limiting member 24, a second clamping member 21 and a second clamping rod 23 connected to the second clamping member 21, the second clamping member 21 is a cylindrical structure, the second clamping member 21 is sleeved on the limiting member 24, the limiting member 24 is mounted below the clamping plate 14, and a through slot for allowing the second clamping member 21 to pass through is formed in the limiting member 24; one side of the second clamping piece 21, which is away from the clamping plate 14, is provided with a mounting hole, a nut 22 is arranged in the mounting hole, one end of the second clamping rod 23 passes through the nut 22 and is connected with the limiting piece 24, the other end of the second clamping rod 23 is provided with a slender rod piece, the second clamping rod 23 is in threaded fit with the nut 22, and when the slender rod piece is rotated, the second clamping piece 21 is driven by the nut 22 to slide up and down along the central axis of the second clamping rod 23, so that the distance between the second clamping piece 21 and the limiting piece is gradually increased or gradually decreased.

In one embodiment, welding set sets up around body frame 1, and welding set includes welding robot, and welding robot has the drive structure of welding arm and drive welding arm action, and the driven removal of welding arm is to clamping station department, and to the welding piece of treating of clamping station department carry out corresponding spot welding.

The application provides a welding set of EGR cooler spot welding equipment can be an auxiliary welding's robot, through the cooperation welding of this kind of welding robot, can further promote efficiency, through the test, under auxiliary robot's the holding, the spot welding efficiency of the spot welding equipment that this application provided is traditional carries out 8 ~ 9 times of the efficiency of spot welding through three sets of spot welding frock. When carrying out manual spot welding through welding personnel, through the test, the spot welding efficiency of the spot welding equipment that this application provided is the traditional efficiency of carrying out spot welding through three sets of spot welding frock 1.5 ~ 2 times.

In one embodiment, the part to be welded further comprises a baffle. Correspondingly, a baffle plate clamping station is formed on the clamping plate. The application provides a location of realization baffling board and tube that EGR cooler spot welding equipment can be quick, accurate to the cooperation resistance welds the welding that realizes tube and baffling board, very big increase welding dimension precision and stability, improved the efficiency of baffling board installation procedure, can realize the concentrated batch welding dress of baffling board and tube.

The application provides an EGR cooler spot welding equipment has realized the centralization, the high efficiency of EGR cooler welding process to and the accuracy of size. Furthermore, the EGR cooler spot welding equipment that this application provided can effectively utilize current MIG robot workstation, realizes welded automation and high efficiency. Furthermore, the EGR cooler spot welding equipment that this application provided can realize the work piece and change at the overall position of welding dress in-process, for the robot welding provides hardware support, simultaneously with this spot welding equipment installation to current workstation machine of shifting on, can realize with the perfect adaptation of robot workstation to realize the automation of EGR cooler dress of welding, and then provided the unanimity of dress efficiency and dress of welding of cooler greatly.

When the EGR cooler spot welding equipment provided by the application is used for welding a workpiece to be welded, firstly, a diffuser, a collector, a tube shell, a water pipe and a bracket are respectively placed on a clamping station corresponding to the spot welding equipment and are positioned through pin holes; sequentially clamping the workpieces on the clamping stations through the clamping mechanisms, and pushing the water pipes to be welded on the water pipe clamping stations to a positioning surface; then tack welding is carried out, the positions of the collector and the diffuser are tack welded, the reference of the EGR cooler is determined, and welding gun space is reserved in the tack welding equipment provided by the application; and then the vertical rotating mechanism and the horizontal rotating mechanism of the spot welding equipment are used for realizing the all-position adjustment of the clamping station in the spot welding process, so that the welding process is more consistent with the processing sequence, the operation is more convenient and faster, and the processing efficiency is higher.

All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.

The present application has been described in considerable detail with reference to certain embodiments and examples thereof. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations can also fall into the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.

Claims (8)

1. The spot welding equipment for the EGR cooler is characterized by comprising a body frame, wherein a plurality of clamping stations corresponding to-be-welded parts are formed on the body frame;

the body frame is provided with a base, and the base is provided with a vertical rotating mechanism, a vertical limiting mechanism and a clamping mechanism; the vertical rotating mechanism comprises a rotating shaft and a handle arranged at one end of the rotating shaft, a clamping plate is arranged on the rotating shaft, and the clamping mechanism is arranged on the clamping plate; the rotating handle rotates, and the vertical limiting mechanism limits the rotating angle of the rotating shaft;

a plurality of clamping stations are formed on the clamping plate, and the clamping mechanism is used for clamping and fixing a part to be welded on the clamping stations;

the welding device is used for performing spot welding on the parts to be welded on each clamping station.

2. The EGR cooler spot welding device according to claim 1, wherein two support frames are oppositely arranged on the base, a bearing seat is arranged at one end of each support frame, which is far away from the base, and two ends of the rotating shaft are respectively arranged in the bearing seats;

one end of the rotating shaft penetrates through the bearing seat to be connected with the handle;

the clamping plate and the base are parallel and arranged at an interval, and the clamping plate is positioned between the two support frames.

3. The EGR cooler spot welding apparatus according to claim 2, wherein the vertical rotation mechanism further comprises a rotary bearing installed in the bearing housing, the rotary bearing being embedded in the bearing housing, the rotary bearing being fittingly connected to the rotation shaft;

the rotary limiting plate is arranged on the bearing seat close to the handle, the rotary limiting plate and the handle are oppositely arranged on two sides of the supporting frame, through holes allowing the rotating shaft to penetrate through are formed in the rotary limiting plate, a plurality of limiting holes are uniformly distributed in the rotary limiting plate, the limiting holes are annularly arranged around the rotating shaft, and the limiting holes are close to the edge of the rotary limiting plate.

4. The EGR cooler spot welding device of claim 3, wherein a plurality of plug holes are arranged on the bearing seat close to the handle, the plug holes correspond to the limiting holes one by one, and a limiting pin is inserted into one limiting hole and the corresponding plug hole and used for limiting the rotation angle of the clamping plate.

5. The EGR cooler spot welding apparatus according to claim 1, wherein the clamping mechanism includes a first clamping member and a second clamping member provided on the clamping plate, the first clamping member and the second clamping member being provided on opposite sides of the clamping plate;

the first clamping assembly is arranged on the upper plate surface of the clamping plate and comprises a first clamping plate, two support columns are oppositely arranged on one side plate surface of the first clamping plate, connecting plates are connected to the two support columns, and the connecting plates are oppositely arranged with the first clamping plate;

two connecting rods are oppositely arranged on the connecting plate, one end of each connecting rod penetrates through the connecting plate to be connected with the first clamping plate, and the other end of each connecting rod is connected with a rod-shaped structural member;

the connecting plate is also provided with a through hole, a bearing is installed in the through hole, a clamping rod is installed on the bearing in a matching mode, the clamping rod penetrates through a bearing hole in the bearing to be connected with a first clamping plate, the first clamping plate is provided with a plug jack, and the clamping rod is correspondingly inserted into the plug jack;

the clamping rod deviates from the end part of the first clamping plate, a rotating wheel is installed at the center of the rotating wheel, a mounting hole is formed in the center of the rotating wheel, the clamping rod is installed in the mounting hole, three supporting rods are arranged on the rotating wheel, the three supporting rods are located on the same plane, and 120-degree included angles are formed between the three supporting rods.

6. The EGR cooler spot welding apparatus according to claim 5, wherein the second clamping assembly is disposed below the clamping plate, the second clamping assembly includes a limiting member, a second clamping member, and a second clamping rod connected to the second clamping member, the second clamping member is of a cylindrical structure, the second clamping member is fitted over the limiting member, the limiting member is mounted below the clamping plate, and a through groove for allowing the second clamping member to pass through is formed in the limiting member; one side of the second clamping piece, which is far away from the clamping plate, is provided with a mounting hole, and a nut is arranged in the mounting hole; one end of the second clamping rod penetrates through the nut and is connected with the limiting part, the other end of the second clamping rod is provided with a slender rod piece, the second clamping rod is in threaded fit with the nut, and when the slender rod piece is rotated, the second clamping piece slides up and down along the central axis of the second clamping rod under the driving of the nut.

7. The EGR cooler spot welding apparatus according to claim 1, wherein the to-be-welded member includes a diffuser, a collector, a tube case, a water pipe, and a bracket;

a diffuser clamping station, a collector clamping station, a pipe shell clamping station, a water pipe clamping station and a bracket clamping station are formed on the clamping plate, each clamping station is provided with a pin hole for positioning, and the pin holes are in adaptive connection with the pins;

the clamping mechanism is used for clamping and positioning the to-be-welded parts on each clamping station, and the to-be-welded water pipes on the water pipe clamping stations are pushed to the positioning surfaces by the clamping mechanism.

8. The EGR cooler spot welding apparatus according to claim 1, wherein the welding device is provided around the body frame, the welding device includes a welding robot having a welding arm and a driving structure that drives the welding arm to move, the welding arm is driven to move to the clamping station, and corresponding spot welding is performed on a to-be-welded member at the clamping station.

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