CN219966715U - Automatic welding equipment - Google Patents

Abstract

The utility model relates to the technical field of welding, and discloses automatic welding equipment, which comprises: the positioning device comprises a rotating platform and a position detection mechanism, wherein a workpiece to be welded is arranged on the rotating platform, and the position detection mechanism is used for detecting whether the workpiece to be welded rotates to a preset welding station; the circulating cooling system comprises a plurality of cooling boxes, the workpieces to be welded are arranged in the cooling boxes, and the cooling boxes are suitable for circulating and introducing cooling liquid; the automatic welding device comprises a welding robot and a control device, wherein the control device is respectively connected with the welding robot and the position detection mechanism and is suitable for controlling the welding robot to weld the workpiece to be welded when the position detection mechanism detects that the workpiece to be welded rotates to a preset welding station. The utility model realizes the intellectualization of welding operation, ensures the consistency and reliability of operation quality, improves the welding quality and production efficiency, simultaneously avoids the problem of poor welding effect caused by overhigh welding temperature, and improves the product quality.

Description

Automatic welding equipment

Technical Field

The utility model relates to the technical field of welding, in particular to automatic welding equipment.

Background

In an air conditioning system, a four-way valve assembly is an indispensable element, most of the welding modes of the four-way valve assembly are manual brazing at present, consistency and reliability of operation quality are difficult to ensure, welding quality is poor, rejection rate is high, and production efficiency is low. And the physical and mental health is seriously damaged by long-term inhalation of nitric oxide and other harmful gases generated in the brazing process by a welder during manual brazing.

Disclosure of Invention

In view of the above, the utility model provides an automatic welding device to solve the problems of poor welding quality, high rejection rate, low efficiency and harm to the physical and mental health of welding personnel in the prior art that a four-way valve assembly is manually brazed.

The utility model provides automatic welding equipment, which comprises a positioning device, a circulating cooling system and an automatic welding device, wherein the positioning device comprises a rotary platform and a position detection mechanism, a workpiece to be welded is arranged on the rotary platform, and the position detection mechanism is used for detecting whether the workpiece to be welded rotates to a preset welding station; the circulating cooling system comprises a plurality of cooling boxes fixedly arranged on the rotary platform, the cooling boxes are arranged at intervals along the circumferential direction of the rotary platform, workpieces to be welded are arranged in the cooling boxes, and cooling liquid is circulated in the cooling boxes to cool the workpieces to be welded; the automatic welding device comprises a welding robot and a control device, wherein the control device is respectively connected with the welding robot and the position detection mechanism and is suitable for controlling the welding robot to weld the workpiece to be welded when the position detection mechanism detects that the workpiece to be welded rotates to a preset welding station.

The beneficial effects are that: through rotary platform and the position detection mechanism that sets up the position detection mechanism detects wait to weld the work piece and rotate when predetermineeing the welding station, control welding robot and wait to weld the work piece and carry out welding operation to realize automatic weld, realize the intellectuality of operation, guarantee operating quality's uniformity and reliability, improved welding quality and production efficiency simultaneously, reduce the disability rate, realize production and reduce personnel and increase efficiency, promote product quality's purpose. Therefore, the problems of poor welding quality, high rejection rate, low efficiency and harm to physical and mental health of welding personnel existing in the prior art by adopting manual brazing are effectively solved.

In addition, the plurality of cooling boxes are arranged on the rotary platform at intervals along the circumferential direction, the workpieces to be welded are arranged in the cooling boxes, and cooling liquid is circularly introduced into the cooling boxes, so that the workpieces to be welded can be cooled, and the problem that the welding effect is poor due to overhigh welding temperature is avoided. And a plurality of cooling boxes are arranged on the rotary platform at intervals along the circumferential direction, and each cooling box is internally provided with a piece to be welded, so that when one workpiece is welded, the next workpiece to be welded can be welded by controlling the rotation of the rotary platform and the matching of the position detection mechanism, the position of the welding robot is kept motionless, the welding efficiency is improved, and the space is saved.

In an optional implementation manner, the cooling box is provided with a liquid inlet and an overflow port, the circulating cooling system further comprises a flow detection unit, the flow detection unit is arranged at the liquid inlet and connected with the control device, and the flow detection unit is used for detecting flow information of cooling liquid in the cooling box and feeding back to the control device.

The beneficial effects are that: the liquid inlet of every cooling box department all installs flow detection unit, and flow detection unit monitors coolant liquid flow velocity of flow guarantee cooling box feed liquor and does not have the jam, if detect coolant liquid flow and be less than the settlement threshold value, controlling means then the equipment is reported to the police, whole circulation cooling system, automatic welder stop work, avoid the coolant liquid velocity of flow low or do not have the work piece cooling effect that the flow leads to not good, fragile, influence the problem of safety in utilization.

Furthermore, as the internal structure of the four-way valve assembly is made of nylon materials which cannot resist high temperature, normal-temperature cooling liquid is required to be circularly introduced in the welding process for cooling and welding. However, impurities can be generated in the welding process, the impurities are easy to mix into a liquid inlet and outlet pipeline of the cooling box, so that the pipeline or a liquid inlet and an overflow port are blocked, cooling liquid of the cooling box does not flow, the problem that materials in the four-way valve are damaged and deformed in the welding process due to the temperature rise of the cooling liquid in the welding process is solved, and the operation reversing work of an air conditioning unit is seriously possibly influenced. According to the flow detection unit, the flow information in the cooling box is detected in real time when the equipment is in operation, and therefore the problems can be effectively avoided.

In an alternative embodiment, the cooling box is an open-top water box, the cooling liquid is cooling water, the circulating cooling system further comprises a water receiving box, the rotating platform is rotatably arranged above the water receiving box, and the water receiving box is internally provided with a water collecting cavity with an open top; the projection of the rotary platform in the vertical direction falls in the water collecting cavity, and the water receiving box is used for collecting cooling water discharged from the overflow port of the cooling box.

The beneficial effects are that: through the water receiving box that sets up, in the water receiving box of below was flowed to the outer edge of follow rotary platform after the overflow port exhaust rivers of cooling box fell to the rotary platform to can realize can collecting the cooling water through the water box, the convenience is to the recovery of the cooling water after using in the cooling box.

In an alternative embodiment, the circulating cooling system further comprises a water storage tank, a return line and a return pump, wherein the water storage tank is suitable for providing cooling water for the cooling box; the return pipeline is connected between the water receiving box and the water storage tank; the reflux pump is arranged on the reflux pipeline and is suitable for sucking the cooling water collected in the water receiving box to the water storage tank.

The beneficial effects are that: the circulating utilization of the cooling water can be realized through the arranged return pipeline and the return pump, and the water resource is saved.

In an alternative embodiment, the rotary platform comprises an index plate and a hollow shaft, and the cooling box is fixedly arranged on the index plate; one end of the hollow shaft is fixedly connected to the central position of the index plate, and the other end of the hollow shaft is rotatably supported and matched with the water receiving box. The circulating cooling system further comprises a main water inlet pipeline and a water inlet pump, one end of the main water inlet pipeline is connected with the water storage tank through the water inlet pipeline, the other end of the main water inlet pipeline penetrates through the hollow shaft and stretches into the upper portion of the dividing plate, and the cooling boxes are respectively connected with the main water inlet pipeline. The water inlet pump is arranged on the main water inlet pipeline and is suitable for sucking water in the water storage tank into the main water inlet pipeline and distributing the water into a plurality of cooling boxes.

The beneficial effects are that: the plurality of cooling boxes are connected with the main water inlet pipeline, so that the plurality of cooling boxes can feed water at the same time, and the water feeding is more efficient and convenient.

In an alternative embodiment, the water storage tank has a return port connected to the return line and a water outlet connected to the water inlet line. A filtering structure is arranged at the reflux port; or, the vertical height of the backflow port is smaller than that of the water outlet, and a filtering structure is arranged between the water outlet and the backflow port.

The beneficial effects are that: can filter the cooling water of retrieving through the filtration that sets up, reduce the impurity in the recirculated cooling water, ensure that the quality of water is clean to further reduce the risk that the pipeline of cooling box blockked up.

In an alternative embodiment, the welding robot comprises a robot body, a welding gun and an X-ray instrument, wherein the robot body comprises a base and a robot arm movably connected to the base; a welding gun is arranged on the end part of the robot arm, and comprises a gun body shell and a gun head; the X-ray instrument is arranged on the gun body shell and used for collecting first image information of a welding part of a workpiece to be welded.

The beneficial effects are that: the X-ray instrument can take a picture before welding to monitor whether the pipeline piece is matched in place or not, whether the quality defects of oblique assembly, overlarge matching clearance of the pipeline piece and the like exist or not, and after welding is finished, the X-ray instrument can take a picture again to detect and calculate whether the welding defects exist or not, if the welding defects exist, the defects of bubbles, insufficient penetration, internal weld flash, welding blockage and the like exist, if the welding defects exist, the welding defects enter a sorting robot procedure through rotating a rotating platform, and the sorting robot goes off line to be processed, so that the effectiveness monitoring of the welding quality of workpieces is realized.

In an alternative embodiment, the welding robot further comprises a point thermometer and a wire feeding mechanism, wherein the point thermometer is arranged on the gun head and is used for detecting temperature information of a welding part; the wire feeding mechanism is arranged on the robot arm and is used for feeding welding wires to the welding part.

The beneficial effects are that: the temperature of the welding point is monitored by the set point temperature meter, and when the temperature of the welding point reaches 550-580 ℃, the welding robot automatically anneals to perform left-right uniform swing heat preservation welding, so that the welding stress can be eliminated.

In an alternative embodiment, the position detection mechanism is an infrared detection mechanism or a laser detection mechanism. The position detection mechanism is located above the center position of the rotary platform and is suitable for emitting detection light rays to the direction of the welding station.

The beneficial effects are that: the position detection mechanism detects whether the cooling box reaches the designated position by adopting the light barrier identification mechanism, and the detection is more convenient and efficient. The position detection mechanism emits infrared rays, laser and the like towards the welding station, when the cooling box, namely an obstacle, exists on the irradiation path, the cooling box is proved to reach the preset welding station, and a signal is fed back to the control device.

In an alternative embodiment, the automatic welding device further comprises an image acquisition unit, wherein the image acquisition unit is used for acquiring second image information of a welding part of the workpiece to be welded, and the image acquisition unit is arranged above the rotating platform.

The beneficial effects are that: through the image acquisition unit that sets up, can realize the effective monitoring to work piece welding quality with the X-ray apparatus cooperation, the analysis result of shooing is more accurate to reduce welding defect, further improve welding quality.

In an alternative embodiment, the workpiece to be welded is a four-way valve assembly.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an automatic welding apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a welding robot according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a positioning device and a circulation cooling system according to an embodiment of the present utility model;

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

FIG. 5 is a schematic diagram of an assembly of a cooling cartridge and a four-way valve assembly according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a cooling box according to an embodiment of the present utility model;

FIG. 7 is a top view of a cooling cartridge according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a four-way valve assembly according to an embodiment of the present utility model;

FIG. 9 is a schematic flow chart of cooling water flow direction in the embodiment of the utility model;

fig. 10 is a schematic flow chart of a welding process of the automatic welding device according to the embodiment of the utility model.

Reference numerals illustrate:

10. rotating the platform; 101. an index plate; 102. a hollow shaft; 11. a position detecting mechanism; 12. an image acquisition unit;

20. a cooling box; 201. an overflow port; 202. a cooling water pipe;

21. a water receiving box;

22. a water storage tank; 220. a filtering structure;

23. a return line; 24. a main water inlet pipe; 25. a water inlet pump; 26. a water inlet pipeline;

30. a welding robot; 31. a robot main body; 32. a welding gun; 33. an X-ray apparatus; 34. a spot thermometer; 35. a wire feeding cylinder; 36. a welding wire gun; 37. a wire reel; 38. a protective cylinder; 39. an encoder;

40. a control device;

50. a four-way valve assembly; 51. a valve body; 52. a pilot valve; 53. and a valve body connecting pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In an air conditioning system, a four-way valve member is an indispensable element. The stainless steel four-way valve component gradually replaces the copper four-way valve component, and the conventional piping component for connecting the stainless steel four-way valve component is usually made of all copper. The existing welding modes of the stainless steel four-way valve parts are manual brazing, the welding failure rate is high, the production efficiency is low, toxic and harmful gases generated in the brazing process greatly hurt the body and the mind of staff, and occupational diseases such as chronic diseases and sudden emergency diseases are easy to occur.

Therefore, the embodiment of the utility model provides automatic welding equipment for stainless steel four-way valve components, which realizes automatic welding and monitoring by adopting a rotary index plate positioning device, a welding robot, an X-ray instrument, a point thermometer, an image acquisition unit and the like in cooperation, and is applied to the welding process of the stainless steel four-way valve components, so that the intelligent operation is realized, the automatic production efficiency is improved, the purposes of reducing staff and improving the efficiency are realized, and the product quality is improved.

The embodiment of the utility model solves the following technical problems:

1. solves the problems of welding quality defect and high rejection rate caused by traditional manual brazing.

2. Solves the problem that the welder can inhale harmful gases such as nitric oxide for a long time to damage physical and mental health during manual brazing.

3. The problem of stainless steel cross valve automatic weld process is because of the cooling water pipeline jam, thereby the cooling water temperature that leads to is higher makes cross valve part inner structure like nylon 66 material damage is solved.

4. The problem of production efficiency low in the manual welding process is solved, and the consistency and the reliability of operation quality are difficult to guarantee.

5. The problem of manual welding in-process, can not real-time supervision welding quality state, inconvenient quality is traced back is solved.

An embodiment of the present utility model is described below with reference to fig. 1 to 10.

The utility model provides automatic welding equipment which comprises a positioning device, a circulating cooling system and an automatic welding device.

Specifically, as shown in fig. 1 to 4, the positioning device includes a rotary platform 10 and a position detecting mechanism 11, the workpiece to be welded is disposed on the rotary platform 10, and the position detecting mechanism 11 is used for detecting whether the workpiece to be welded is turned to a preset welding station; the circulating cooling system comprises a plurality of cooling boxes 20 fixedly arranged on the rotary platform 10, the cooling boxes 20 are arranged at intervals along the circumferential direction of the rotary platform 10, workpieces to be welded are arranged in the cooling boxes 20, and cooling liquid is circulated in the cooling boxes 20 to cool the workpieces to be welded; the automatic welding device comprises a welding robot 30 and a control device 40, wherein the control device 40 is respectively connected with the welding robot 30 and the position detection mechanism 11 and is suitable for controlling the welding robot 30 to weld a workpiece to be welded when the position detection mechanism 11 detects that the workpiece to be welded rotates to a preset welding station.

In the above embodiment, through the rotating platform 10 and the position detecting mechanism 11 that set up, when the position detecting mechanism 11 detects that the workpiece to be welded rotates to the preset welding station, the welding robot 30 is controlled to perform welding operation on the workpiece to be welded, thereby realizing automatic welding, realizing intellectualization of operation, ensuring consistency and reliability of operation quality, improving welding quality and production efficiency simultaneously, reducing rejection rate, realizing production personnel reduction and efficiency improvement, and improving the purpose of product quality. Therefore, the problems of poor welding quality, high rejection rate, low efficiency and harm to physical and mental health of welding personnel existing in the prior art by adopting manual brazing are effectively solved.

In addition, the plurality of cooling boxes 20 are arranged on the rotary platform 10 at intervals along the circumferential direction, the workpieces to be welded are arranged in the cooling boxes 20, and cooling liquid is circularly introduced into the cooling boxes 20, so that the workpieces to be welded can be cooled, and the problem that the welding effect is poor due to overhigh welding temperature is avoided. And a plurality of cooling boxes 20 are arranged on the rotary platform 10 at intervals along the circumferential direction, and each cooling box 20 is internally provided with a piece to be welded, when one workpiece is welded, the next piece to be welded can be welded by controlling the rotary platform 10 to rotate and the positioning and matching of the position detection mechanism 11, and the position of the welding robot 30 is kept still, so that the welding efficiency is improved, and the space is saved.

In this embodiment, the control device 40 comprises a console, which includes a networked computer.

In some embodiments, the workpiece to be welded is a four-way valve assembly 50. However, the specific structural form of the workpiece to be welded is not limited in this embodiment, and other parts to be welded are all within the protection scope of this embodiment.

As shown in fig. 3, 5 and 8, the four-way valve assembly 50 in the present embodiment is a stainless steel four-way valve assembly, and includes a valve body 51, a pilot valve 52 and a valve body connecting pipe 53. The pilot valve 52 is an auxiliary valve, a coil is installed on the pilot valve 52, and after the coil is electrified, a magnetic pole is generated to attract the sliding block in the valve body 51 to move, so that the running direction of the refrigerant in the pipe is changed, and the refrigerating/heating reversing is formed. The valve body connection pipe 53 is used to connect the valve body 51 with a compressor discharge pipe, a condenser intake pipe, a compressor intake pipe, an external large shut-off valve, and the like.

The present embodiment will be described in detail taking the four-way valve assembly 50 as an example of the workpiece to be welded.

In some embodiments, as shown in fig. 1 and fig. 5 to fig. 7, the cooling box 20 is provided with a liquid inlet and an overflow port 201, and the circulation cooling system further includes a flow detection unit, where the flow detection unit is disposed at the liquid inlet and connected to the control device 40, and the flow detection unit is used for detecting flow information of the cooling liquid in the cooling box 20 and feeding back the flow information to the control device 40.

In the above embodiment, the liquid inlet of each cooling box 20 is provided with a flow detection unit, the flow detection unit monitors the flow rate of the cooling liquid to ensure that the liquid inlet of the cooling box 20 is not blocked, if the detected flow rate of the cooling liquid is lower than the set threshold value, the control device 40 alarms, the whole circulating cooling system and the automatic welding device stop working, and the problems that the cooling effect of the workpiece is poor, the damage is easy and the use safety is affected due to low or no flow of the cooling liquid are avoided.

Specifically, since the internal structure of the four-way valve assembly 50 is made of nylon 66 material which is not resistant to high temperature, normal temperature cooling liquid is required to be circulated in the welding process for cooling and welding. However, impurities can be generated in the welding process, the impurities are easy to mix into the liquid inlet and outlet pipelines of the cooling box 20, so that the pipelines or the liquid inlet and the overflow port 201 are blocked, the cooling liquid of the cooling box 20 does not flow, the problem that nylon 66, which is the material in the four-way valve in the welding process, is damaged and deformed due to the temperature rise of the cooling liquid in the welding process is seriously likely to influence the operation reversing work of the air conditioning unit. By the flow detection unit, the flow information in the cooling box 20 is detected in real time when the device is running, so that the problems can be effectively avoided.

In some embodiments, the cooling box 20 is an open-top water box, the open-top water box facilitates the welding operation of the welding robot 30, the cooling liquid is cooling water, and of course, the cooling liquid is not limited to cooling water, and other cooling liquids such as glycerin-water type and ethylene glycol-water type are all within the protection scope of the embodiment.

Preferably, in order to save costs, the cooling liquid in the present embodiment is cooling water at normal temperature.

Further, the flow detection unit is a water flow sensor installed at the liquid inlet of the water box, the whole welding equipment adopts a circulating water flow mode, the flow detection unit can monitor water flow and water level, the water level in the cooling box 20 is generally not lower than three fourths of the height of the cooling box 20, and meanwhile, the water level is not lower than the height of the valve body 51 of the four-way valve assembly 50, so that the valve body 51 can be immersed by cooling water, and cooling of the valve body 51 is realized.

In this embodiment, the overflow port 201 is formed on the side wall of the cooling box 20, and preferably, the height of the overflow port 201 is not less than three-fourths of the height of the side wall of the box.

In some embodiments, as shown in fig. 1 to 4, the circulating cooling system further comprises a water receiving box 21, the rotary platform 10 is rotatably arranged above the water receiving box 21, and the water receiving box 21 is internally provided with a water collecting cavity with an open top; the projection of the rotary platform 10 in the vertical direction falls within the water collecting chamber, and the water receiving box 21 is used to collect the cooling water discharged from the overflow port 201 of the cooling box 20.

In the above embodiment, through the water receiving box 21, the water flow discharged from the overflow port 201 of the cooling box 20 falls onto the rotary platform 10 and then flows into the water receiving box 21 below from the outer edge of the rotary platform 10, so that the cooling water can be collected through the water box, and the cooling water in the cooling box 20 after use can be recovered conveniently.

In some preferred embodiments, the peripheral edge of the rotary platform 10 is inclined slightly downward, so that the water flow is facilitated to flow downward, and cooling water is prevented from accumulating on the rotary platform 10.

In other preferred embodiments, the rotary platform 10 is hollow, so that water flow is convenient to fall down, and cooling water is prevented from accumulating on the rotary platform 10.

In some embodiments, the recirculating cooling system further comprises a water storage tank 22, a return line 23, a return pump, wherein the water storage tank 22 is adapted to provide cooling water to the cooling cartridge 20; the return line 23 is connected between the water receiving box 21 and the water storage tank 22; a return pump is provided on the return line 23 and adapted to suck the cooling water collected in the water receiving box 21 to the water storage tank 22.

In the above embodiment, the circulation of the cooling water can be realized by the reflux pipeline 23 and the reflux pump, so that the water resource is saved.

In some embodiments, as shown in fig. 1, 3 and 4, the rotary platform 10 includes an index plate 101 and a hollow shaft 102, and the cooling cartridge 20 is fixedly disposed on the index plate 101; one end of the hollow shaft 102 is fixedly connected to the central position of the index plate 101, and the other end is rotatably supported and matched with the water receiving box 21. The circulation cooling system further comprises a main water inlet pipeline 24 and a water inlet pump 25, one end of the main water inlet pipeline 24 is connected with the water storage tank 22 through a water inlet pipeline 26, the other end of the main water inlet pipeline passes through the hollow shaft 102 and stretches into the upper portion of the dividing plate 101, and the plurality of cooling boxes 20 are respectively connected with the main water inlet pipeline 24. A water intake pump 25 is provided on the main water intake pipe 24, and is adapted to suck water in the water storage tank 22 into the main water intake pipe 24 and distribute it into the plurality of cooling boxes 20.

In the above embodiment, the plurality of cooling boxes 20 are all connected with the main water inlet pipe 24, so that the plurality of cooling boxes 20 can be supplied with water at the same time, and the water supply is more efficient and convenient.

Specifically, the main water inlet pipe 24 is disposed through the end of the hollow shaft 102 in a closed manner, and a plurality of outlets are circumferentially spaced apart and connected to the plurality of cooling boxes 20 in a one-to-one correspondence through cooling water pipes 202. The main water inlet 24 is a vertical pipe with a larger diameter than the water inlet 26, and the main water inlet 24 has a larger diameter to facilitate tapping. The upper port of the main water inlet pipeline 24 is of a closed design and extends out of the rotary platform 10, the outlet of the water inlet pump 25 is connected with the lower port of the main water inlet pipe, and the inlet of the water inlet pump 25 is connected with the water storage tank 22 through a water inlet pipeline 26.

Preferably, in this embodiment, the rotary platform 10 adopts an eight-bit dividing disc 101 or an eight-bit dividing device, which is divided into eight scales, the corresponding cooling boxes 20 are eight, the eight cooling boxes 20 are uniformly fixed at eight scale positions of the dividing disc 101 at intervals, after the four-way valve assembly 50 is welded, the dividing disc 101 is turned into the next scale, and the next four-way valve assembly 50 is welded.

In other alternative embodiments, the recirculating cooling system includes a water dispenser fixedly disposed on the indexing disk 101, the water dispenser having a water storage chamber adapted to evenly distribute water within the water storage chamber into each of the cooling cartridges 20. Preferably, the water dispenser is fixedly disposed at the center of the index plate 101. The plurality of cooling cartridges 20 are respectively in communication with the water dispenser. The water inlet line 26 is connected at one end to the water storage tank 22 and at the other end through the hollow shaft 102 and to a water dispenser. A water inlet pump 25 is provided on the water inlet line 26 and is adapted to pump water from the storage tank 22 into the water dispenser.

In some embodiments, a driving mechanism suitable for driving the rotary platform 10 to rotate is mounted on the bottom of the water receiving box 21, the hollow shaft 102 of the rotary platform 10 is in rotary sealing connection with the bottom wall of the water receiving box 21 through a bearing, and an output shaft of the driving mechanism is in transmission connection with the hollow shaft 102 through a transmission mechanism. Alternatively, in other alternative embodiments, the rotary platform 10 may be free to rotate about its central axis.

In some embodiments, the water receiving box 21 is a liquid storage container with a circular cross section, a plurality of supporting legs are fixedly arranged on the bottom wall of the water receiving box 21 at intervals along the circumferential direction, and the water receiving box 21 and the rotary platform 10 are fixed at a preset height position above the ground through the arranged supporting legs.

In some embodiments, as shown in fig. 1 and 3, the water storage tank 22 has a return port connected to the return line 23 and a water outlet port connected to the water inlet line 26. A filtering structure 220 is arranged at the reflux port; alternatively, the vertical height of the return port is less than the vertical height of the outlet port, and a filter structure 220 is disposed between the outlet port and the return port.

In the above embodiment, the recovered cooling water can be filtered by the provided filtering structure 220, so that the impurities in the circulating cooling water are reduced, and the water quality is ensured to be clean, thereby further reducing the risk of blockage of the pipeline of the cooling box 20.

Preferably, in this embodiment, a design is adopted in which the filtering structure 220 is disposed between the water outlet and the backflow port, and the filtering structure 220 is a filter screen, and the outer periphery of the filtering structure 220 is fixedly disposed on the inner peripheral wall of the water storage tank 22. The filtered impurities are positioned at the bottom of the water storage tank 22, a drain outlet is arranged at the bottom of the water storage tank 22, and the drain outlet can be periodically opened to clean the water storage tank 22.

In this embodiment, a circular dividing plate 101 is installed above the water receiving box 21, a water pipe of the cooling box 20 is connected with a main water inlet pipe 24 in the middle, a water inlet pump 25 is installed on the main water inlet pipe 24, the water inlet pump 25 is connected with the water storage tank 22, the water inlet pump 25 provides pressure and water source, meanwhile, a computer of the control device 40 synchronously monitors the load change of the water inlet pump 25, if the load of the water inlet pump 25 exceeds a set range, the equipment automatically alarms and stops. A filtering structure 220 for filtering impurities in water is arranged between a backflow port and a water outlet of the water storage tank 22, the water outlet is arranged above the filtering structure 220, the backflow port is arranged below the filtering structure 220, water quality is guaranteed to be clean, and a sewage outlet is arranged at the bottom of the water storage tank 22.

In some embodiments, as shown in fig. 1 and 2, the welding robot 30 includes a robot body 31, a welding gun 32, and an X-ray instrument 33, the robot body 31 including a base and a robot arm movably connected to the base; a welding gun 32 is mounted on the end of the robot arm, the welding gun 32 comprising a gun body housing and a gun head; an X-ray apparatus 33 is mounted on the gun body housing for acquiring first image information of a welding portion of a workpiece to be welded.

In the above embodiment, the X-ray apparatus 33 may take a photograph to monitor whether the pipeline member is in place before welding, whether there is quality defect such as assembly skew and excessive fit clearance of the pipeline member, and after welding is completed, the X-ray apparatus 33 may take a photograph again to detect and calculate whether there is quality defect such as bubble, insufficient penetration, inner weld flash and welding blockage, if detected, the process enters the sorting robot process through the rotation of the rotation platform 10, and the sorting robot goes off line to process, thereby realizing effective monitoring of the welding quality of the workpiece.

Preferably, a protective tube 38 is arranged outside the X-ray instrument 33, the protective tube 38 is fixed on the gun body shell, the opening of the protective tube 38 faces the gun head, X-rays emitted by the X-ray instrument 33 penetrate through the opening to be irradiated to the welding part of the workpiece to be welded, and the arranged protective tube 38 prevents the X-rays from radiating all around.

In some embodiments, the welding robot 30 further includes a spot thermometer 34 and a wire feeder, the spot thermometer 34 being disposed on the gun head for detecting temperature information of the welding site; the wire feeding mechanism is arranged on the robot arm and is used for feeding welding wires to the welding part.

In the above embodiment, the temperature of the welding point is monitored by the set point thermometer 34, and when the temperature of the welding point reaches 550-580 ℃, the welding robot 30 automatically anneals to perform the heat-preserving welding with uniform left-right swing, so that the welding stress can be eliminated.

In some embodiments, the position detection mechanism 11 is an infrared detection mechanism or a laser detection mechanism. In the present embodiment, the position detecting mechanism 11 adopts a light shielding mode to identify and locate the position of the four-way valve assembly 50, which is not limited to this, and other mechanical position detecting mechanisms, magnetic position detecting mechanisms and the like are all within the protection scope of the present embodiment.

In some embodiments, the position detection mechanism 11 is located above the central position of the rotary stage 10, the position detection mechanism 11 being adapted to emit detection light in the direction of the welding station.

In this embodiment, the position detecting mechanism 11 detects whether the cooling box 20 reaches the specified position by using the light barrier identifying mechanism, so that the detection is more convenient and efficient. The position detecting means 11 emits infrared rays, laser light, etc. toward the welding station, and when the cooling cartridge 20, i.e., an obstacle, is present on the irradiation path, it is verified that the cooling cartridge 20 has reached the preset welding station, and a signal is fed back to the control device 40.

In the present embodiment, the position detecting mechanism 11 is fixed, that is, may be suspended and fixed above the rotary table 10. The position detecting mechanism 11 and the rotary table 10 have a set interval therebetween, which is smaller than the height of the cooling box 20, and the detection light of the position detecting mechanism 11 can be emitted in the horizontal direction. Of course, the position detecting mechanism 11 is not limited to this, and may be higher than the cooling box 20, and the detection light may be emitted obliquely.

Further, the control device 40 is a console having functions of storage, calculation, display, and control, and all the components cooperate with each other to give instructions to the console for operation.

In some embodiments, the automatic welding apparatus further comprises an image acquisition unit 12, the image acquisition unit 12 is configured to acquire second image information of the welding site of the workpiece to be welded, and the image acquisition unit 12 is disposed above the rotary platform 10.

In the above embodiment, through the image acquisition unit 12, the effective monitoring of the welding quality of the workpiece can be realized in cooperation with the X-ray apparatus 33, and the photographing analysis result is more accurate, so that the welding defect is reduced, and the welding quality is further improved.

Preferably, in the present embodiment, the image capturing unit 12 includes an image intensifier and a CCD camera. Because the image obtained by the X-ray apparatus 33 is distorted by magnification, and the image is not a vector image, or is blurred by magnification like that obtained by photographing by a cell phone, an image intensifier is required to increase definition, and then a CCD camera is used to obtain a clear image again, so that photographing analysis is performed on the welded part again, welding defects are reduced, and welding quality is improved.

Preferably, both the position detection mechanism 11 and the image acquisition unit 12 are integrally provided and mounted above the rotary platform 10, e.g. may be suspended from a ceiling above the rotary platform 10. The X-ray instrument 33, the position detecting mechanism 11, the image intensifier, the CCD camera, and the like are all connected to a computer of a console.

In the embodiment, the cooperation of all the components is controlled by a control console, and the whole equipment mainly comprises a positioning device, a circulating cooling system, a welding robot 30 and a control device 40;

wherein, positioner and circulative cooling system include: a water storage tank 22, a water intake pump 25, a return pump, an index plate 101, a cooling box 20, a position detection mechanism 11 above the cooling box 20, an image acquisition unit 12, and the like. The cooling water between the water storage tank 22 and the cooling box 20 is continuously circulated, and the water inlet pump 25, the reflux pump and position detecting mechanism 11, the image acquisition unit 12 and the flow detecting unit in the cooling box 20 are controlled by a console. If the flow detection unit detects that the water flow is small, the control console instructs the welding robot 30 to stop and alarm. After the four-way valve assembly 50 is installed in the cooling box 20, the cooling box 20 is rotated through the index plate 101 to reach a designated welding station, and the position detection mechanism 11 recognizes that the cooling box 20 is in place and feeds back information to the position, so that the welding robot 30 detects the pipeline piping condition.

Further, the welding robot 30 includes: robot body 31, welding gun 32, wire feeder, thermometer 34, X-ray machine, etc. The wire feeding mechanism comprises a wire reel 37, an encoder 39, a wire feeding cylinder 35 and a wire gun 36, wherein the wire feeding cylinder 35 supplies power in the wire feeding process, and the encoder 39 detects the wire feeding amount. The wire feeding cylinder 35 feeds the welding wire, and the wire feeding cylinder 35 pushes the welding wire to feed. The welding gun 32 is a dual gun head and heats the weld of the four-way valve assembly 50. After receiving a welding instruction, the welding robot 30 controls the welding gun 32 to reach a specified position to ignite so as to heat the four-way valve assembly 50, the point thermometer 34 detects the heated part, and after reaching a preset temperature, the wire feeding mechanism works to control the welding wire to be fed by the welding wire gun head; the post-welding X-ray apparatus 33 operates to irradiate the welded portion, and then analyzes the photograph by combining with a CCD camera.

The automatic welding equipment provided in this embodiment performs positioning welding detection on the stainless steel four-way valve assembly 50 by using the X-ray apparatus 33, the point thermometer 34, the welding robot 30, the circulating cooling system, the positioning device and the like, reduces the failure rate and improves the working efficiency.

The welding process of the automatic welding device in this embodiment is as follows:

referring to fig. 1 to 3 and fig. 9 and 10, after the four-way valve assembly 50 reaches a specified welding position through the dividing plate 101, the position detecting mechanism 11 feeds back the four-way valve assembly 50 to be in place, the X-ray instrument 33 starts to irradiate, and the first step is to photograph and monitor whether the pipeline piece is in place, and whether quality defects such as assembly skew, overlarge matching clearance of the pipeline piece exist or not, if equipment automatically alarms, the equipment automatically rotates to enter a sorting robot procedure through the dividing plate 101, and the sorting robot is in offline processing. When no abnormality is detected, a signal is transmitted to the welding robot 30 through the PLC, and after the welding robot 30 receives the signal, the automatic welding device is started. Firstly, the preheating stage is carried out, wherein the preheating position is a 5mm area on the upper side of a brazing seam, the flame uniformly swings left and right when the preheating is carried out until the copper pipe is dark red, meanwhile, when the temperature of the welding point is monitored by the temperature meter 34 and reaches 550-580 ℃, the welding gun 32 is controlled by the welding robot 30 to automatically anneal, the welding stress is eliminated, meanwhile, the welding signal is transmitted to the encoder 39 of the wire feeding mechanism to carry out wire feeding, the wire feeding quantity is monitored, the welding quality is ensured, and the defects of oversized weld and the like are avoided. After the welding is finished, the X-ray instrument 33 shoots again to detect, calculates whether the welding defect exists, and if the welding defect exists, the quality defects such as bubbles, insufficient penetration, internal weld flash, welding blockage and the like exist, if the welding defect exists, the welding defect rotates through the indexer to enter a sorting robot procedure, and the sorting robot goes off line to be processed.

In this embodiment, the welding robot 30 automatically welds, and the four-way valve assembly 50 is effectively monitored by using the X-ray device 33, the spot thermometer 34, the encoder 39, the position detection mechanism 11, etc., and the welding robot 30 automatically recognizes the positioning welding spot to weld in combination with the position detection mechanism 11. The X-ray instrument 33 and the image acquisition unit 12 are used for carrying out irradiation imaging, and the type of the welding defect is identified through the logical analysis and comparison of the gray values of the pictures, so that the failure rate is reduced, the production efficiency is improved, the consistency and the reliability of the operation quality are ensured, and finally, the purposes of saving labor cost, improving the automatic production rate and reducing potential safety hazards and quality hazards are realized.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

Claims (10)

1. An automatic welding apparatus, comprising:

the positioning device comprises a rotary platform (10) and a position detection mechanism (11), wherein a workpiece to be welded is arranged on the rotary platform (10), and the position detection mechanism (11) is used for detecting whether the workpiece to be welded rotates to a preset welding station or not;

the circulating cooling system comprises a plurality of cooling boxes (20) fixedly arranged on the rotary platform (10), the plurality of cooling boxes (20) are arranged at intervals along the circumferential direction of the rotary platform (10), workpieces to be welded are arranged in the cooling boxes (20), and cooling liquid is suitable for circulating in the cooling boxes (20) to cool the workpieces to be welded;

the automatic welding device comprises a welding robot (30) and a control device (40), wherein the control device (40) is respectively connected with the welding robot (30) and a position detection mechanism (11) and is suitable for controlling the welding robot (30) to weld a workpiece to be welded when the position detection mechanism (11) detects that the workpiece to be welded rotates to a preset welding station.

2. The automatic welding apparatus according to claim 1, wherein the cooling box (20) is provided with a liquid inlet and an overflow port (201), and the circulation cooling system further comprises:

the flow detection unit is arranged at the liquid inlet and connected with the control device (40), and is used for detecting flow information of the cooling liquid in the cooling box (20) and feeding back the flow information to the control device (40).

3. The automatic welding apparatus according to claim 2, wherein the cooling cartridge (20) is an open-top water cartridge, the cooling liquid is cooling water, and the circulation cooling system further includes:

the water receiving box (21), the rotary platform (10) is rotatably arranged above the water receiving box (21), and the water receiving box (21) is internally provided with a water collecting cavity with an open top;

the projection of the rotary platform (10) in the vertical direction falls into the water collecting cavity, and the water receiving box (21) is used for collecting cooling water discharged from an overflow port (201) of the cooling box (20).

4. The automatic welding apparatus according to claim 3, wherein the recirculating cooling system further comprises:

-a water storage tank (22) adapted to supply cooling water to said cooling cartridge (20);

a return line (23) connected between the water receiving box (21) and the water storage tank (22);

and a return pump which is arranged on the return pipeline (23) and is suitable for sucking the cooling water collected in the water receiving box (21) to the water storage tank (22).

5. The automatic welding apparatus according to claim 4, wherein the rotary platform (10) comprises:

the cooling box (20) is fixedly arranged on the dividing plate (101);

a hollow shaft (102), wherein one end of the hollow shaft (102) is fixedly connected to the central position of the index plate (101), and the other end of the hollow shaft is rotatably supported and matched with the water receiving box (21);

the recirculating cooling system further includes:

a main water inlet pipeline (24), one end of which is connected with the water storage tank (22) through a water inlet pipeline (26), the other end of which passes through the hollow shaft (102) and stretches into the upper part of the dividing disc (101), and a plurality of cooling boxes (20) are respectively connected with the main water inlet pipeline (24);

-a water inlet pump (25) arranged on said main water inlet conduit (24) adapted to suck water from said water storage tank (22) into said main water inlet conduit (24) and to distribute it into a plurality of said cooling boxes (20).

6. The automatic welding apparatus according to claim 5, characterized in that said water storage tank (22) has a return port connected to said return line (23) and a water outlet connected to said water inlet line (26);

a filtering structure (220) is arranged at the reflux port; or, the vertical height of the backflow port is smaller than that of the water outlet, and a filtering structure (220) is arranged between the water outlet and the backflow port.

7. The automatic welding apparatus according to any one of claims 1 to 6, wherein the welding robot (30) comprises:

a robot body (31) including a base and a robot arm movably connected to the base;

a welding gun (32) mounted on an end of the robotic arm, the welding gun (32) comprising a gun body housing and a gun head;

and the X-ray instrument (33) is arranged on the gun body shell and is used for acquiring first image information of a welding part of the workpiece to be welded.

8. The automatic welding apparatus according to claim 7, wherein the welding robot (30) further comprises:

the temperature point instrument (34) is arranged on the gun head and is used for detecting temperature information of a welding part;

and the wire feeding mechanism is arranged on the robot arm and is used for feeding welding wires to the welding part.

9. The automatic welding apparatus according to any one of claims 1 to 6, wherein the position detection mechanism (11) is an infrared detection mechanism or a laser detection mechanism;

and/or the position detection mechanism (11) is positioned above the central position of the rotary platform (10), and the position detection mechanism (11) is suitable for emitting detection light rays to the direction of the welding station;

and/or the automatic welding equipment further comprises an image acquisition unit (12), wherein the image acquisition unit (12) is used for acquiring second image information of a welding part of the workpiece to be welded, and the image acquisition unit (12) is arranged above the rotary platform (10).

10. The automatic welding apparatus according to any one of claims 1 to 6, wherein the workpiece to be welded is a four-way valve assembly (50).