1. The utility model provides a pressure manifold cutting welds integrative device which characterized in that includes:

a first ground rail;

the cutting machine is movably arranged on the first ground rail and used for cutting a cutting hole in the collecting pipe;

the welding machine is movably arranged on the first ground rail and used for welding the collecting pipe and the fittings;

the second ground rail is arranged beside the first ground rail;

the three-jaw chuck is arranged at one end of the second ground rail;

the valve seat positioning tool is movably arranged on the second ground rail, and is a lifting supporting seat and used for supporting the collecting pipe;

the collecting pipe is clamped between the three-jaw chuck and the valve seat positioning tool;

the second ground rail is movably provided with the chuck tool, and the chuck tool is used for clamping the accessory and enabling the accessory to be matched with the collecting pipe.

2. A header cutting and welding integrated device according to claim 1, wherein:

the heating assembly is arranged in the collecting pipe and penetrates through the whole collecting pipe, the heating temperature of the heating assembly is slowly reduced from the hole cutting position to the two sides of the hole cutting position, and the heating temperature of the heating assembly at the hole cutting position is the same as the welding temperature of the heating assembly at the hole cutting position.

3. A header cutting and welding integrated device according to claim 2, wherein:

the heating assembly is a heating resistor, the heating resistor comprises a plurality of resistor blocks and electrode plates arranged between the resistor blocks, the resistor blocks are connected in series by the electrode plates, and heating voltage is loaded at two ends of the heating resistor;

the resistance value of the resistance block at the cut hole in the collector pipe is the largest, and the resistance values of the resistance blocks at the two sides of the collector pipe are slowly reduced.

4. A header cutting and welding integrated device according to claim 3, wherein:

the resistance blocks are round blocks with equal radiuses and are provided with through holes in the axis direction;

the radius of the through hole of the resistance block at the cutting hole in the collector pipe is maximum, the thickness of the through hole is larger than the width of the cutting hole nearby, the radius of the through hole of the resistance block on two sides of the through hole is gradually reduced, and the axial thickness of the resistance block on two sides of the through hole is gradually reduced.

5. A header cutting and welding integrated device according to claim 4, wherein:

the heating resistor is characterized by further comprising an insulating frame, the outer side of the heating resistor is wrapped by the insulating frame, the insulating frame abuts against the inner wall of the collecting pipe, and the insulating frame comprises an insulating ring arranged on the electrode plate in a sleeved mode and an insulating connecting rod connected between the insulating rings.

6. A header cutting and welding integrated device according to claim 5, wherein:

the cutting machine is an intersecting line cutting machine, and the welding machine is a welding robot.

7. A header cutting and welding integrated device according to claim 6, wherein:

the welding machine is characterized by further comprising a plane tool and a connecting column, wherein the connecting column is arranged on one side of the plane tool, the connecting column can be matched with the three-jaw chuck, and a plane welding product is placed on the plane tool to be welded by the welding machine.

8. A header cutting and welding method based on the welding integrated device of any one of claims 1-7, characterized by comprising the following steps:

s1: clamping one end of the collecting pipe on a three-jaw chuck, moving a valve seat positioning tool on a second ground rail, and supporting the other side of the collecting pipe by the valve seat positioning tool;

s2: moving an intersecting line cutting machine on the first ground rail, and cutting a cutting hole at the set position of the collecting pipe by using the intersecting line cutting machine;

s3: clamping the accessory on a chuck tool, and moving the chuck tool to place the accessory so that the accessory is matched with the cutting hole;

s4: spot-welding the placed fittings to enable the fittings to be pre-positioned on the collecting pipe;

s5: and the movable welding robot sequentially welds the accessories.

9. A header cutting and welding method according to claim 8, further comprising the following steps between step S4 and step S5:

s401: inserting the heating resistor wrapped with the insulating frame outside into the collecting pipe, and loading heating voltage at two ends of the heating resistor to heat the collecting pipe;

when the heating is carried out on the collecting pipe, the heating voltage is slowly increased, and when the heating temperature of the heating assembly at the cutting hole is the same as the welding temperature at the cutting hole, the heating voltage is kept unchanged;

the heating voltage is slowly reduced while cooling the manifold.

Background

In the course of working at the pressure manifold, including cutting and welding, cut a plurality of holes that cut of department with the pressure manifold, then use the accessory welding to form the pressure manifold subassembly in the hole department that cuts of pressure manifold, cut at present and weld all accomplish on the equipment of difference, after pressure manifold cutting process is accomplished, need take down the clamping and weld the process to welding equipment in, so can accomplish the processing of pressure manifold, but the technology that processes the pressure manifold at present has following problem:

1. the assembly and disassembly of the collecting pipe can lead to the inconsistent reference of twice clamping, and the welding precision is reduced, so that the welding problems such as welding seams and the like are caused at the position of a collecting pipe cutting hole, and the product of the collecting pipe assembly is unqualified.

2. In the pressure manifold course of working, need carry out twice dismouting, simultaneously, dismouting needs the manual work to beat through surveying and adjusts the benchmark at every turn, and leads to artificial work load to increase.

3. In the process of welding a collecting pipe and a fitting, welding stress is easily generated at the welding seam of a cutting hole, a mode generally adopted for eliminating the welding stress is to uniformly heat and cool a welding piece, but the length of the collecting pipe is longer, the distance between every two cutting holes is longer, and the distance between adjacent welding points is longer; at this time, if the integral heating and cooling of the collecting pipe assembly is adopted, the heating and cooling are carried out on the welding point part, but the heating and cooling are also carried out on most of the collecting pipe blank parts between the welding points, so that a large amount of energy is wasted undoubtedly; at this moment, if only carry out local heating and cooling to the collecting main position near the welding point, can lead to the collecting main position near the welding point to produce great difference in temperature with the collecting main blank position, and cause the collecting main white portion to produce unnecessary stress, the production of stress can cause the easy defect such as seam and collecting main subassembly short service life that appears on the collecting main subassembly pipe wall.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the header pipe cutting and welding integrated device, cutting and welding are carried out on the same device, only one time of clamping is needed for the header pipe, the problem of welding precision reduction caused by inconsistent clamping reference for multiple times is avoided, and meanwhile, the workload of clamping and jumping measurement is reduced; on the other hand, the collecting pipe is heated by using the heating resistor, so that the temperature of the collecting pipe is gradually reduced from the hole cutting position to two sides, and the stress generated by welding is reduced on the basis of saving certain energy.

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

the invention provides a header pipe cutting and welding integrated device, which comprises:

a first ground rail;

the cutting machine is movably arranged on the first ground rail and used for cutting a cutting hole in the collecting pipe;

the welding machine is movably arranged on the first ground rail and used for welding the collecting pipe and the fittings;

the second ground rail is arranged beside the first ground rail;

the three-jaw chuck is arranged at one end of the second ground rail;

the valve seat positioning tool is movably arranged on the second ground rail, and is a lifting supporting seat and used for supporting the collecting pipe;

the collecting pipe is clamped between the three-jaw chuck and the valve seat positioning tool;

the second ground rail is movably provided with the chuck tool, and the chuck tool is used for clamping the accessory and enabling the accessory to be matched with the collecting pipe.

As a further improvement of the above technical solution, the heating device further comprises a heating assembly, the heating assembly is arranged in the collecting pipe, the heating assembly penetrates through the whole collecting pipe, the heating temperature of the heating assembly is slowly reduced from the hole cutting position to two sides of the hole cutting position, and the heating temperature of the heating assembly at the hole cutting position is the same as the welding temperature at the hole cutting position.

As a further improvement of the above technical solution, the heating assembly is a heating resistor, the heating resistor includes a plurality of resistor blocks and electrode plates arranged between the resistor blocks, the electrode plates connect the resistor blocks in series, and heating voltage is applied to two ends of the heating resistor;

the resistance value of the resistance block at the cut hole in the collector pipe is the largest, and the resistance values of the resistance blocks at the two sides of the collector pipe are slowly reduced.

As a further improvement of the technical scheme, the resistance blocks are round blocks with equal radius, and through holes are formed in the axis direction;

the radius of the through hole of the resistance block at the cutting hole in the collector pipe is maximum, the thickness of the through hole is larger than the width of the cutting hole nearby, the radius of the through hole of the resistance block on two sides of the through hole is gradually reduced, and the axial thickness of the resistance block on two sides of the through hole is gradually reduced.

As a further improvement of the technical scheme, the heating resistor further comprises an insulating frame, the outer side of the heating resistor is wrapped by the insulating frame, the insulating frame abuts against the inner wall of the collecting pipe, and the insulating frame comprises an insulating ring sleeved on the electrode plate and an insulating connecting rod connected between the insulating rings.

As a further improvement of the technical scheme, the cutting machine is an intersecting line cutting machine, and the welding machine is a welding robot.

As a further improvement of the technical scheme, the welding fixture further comprises a plane tool and a connecting column, wherein the connecting column is arranged on one side of the plane tool, the connecting column can be matched with the three-jaw chuck, and a plane welding product is placed on the plane tool and welded by the welding machine.

The invention also provides a header pipe cutting and welding method based on the welding integrated device, which comprises the following steps:

s1: clamping one end of the collecting pipe on a three-jaw chuck, moving a valve seat positioning tool on a second ground rail, and supporting the other side of the collecting pipe by the valve seat positioning tool;

s2: moving an intersecting line cutting machine on the first ground rail, and cutting a cutting hole at the set position of the collecting pipe by using the intersecting line cutting machine;

s3: clamping the accessory on a chuck tool, and moving the chuck tool to place the accessory so that the accessory is matched with the cutting hole;

s4: spot-welding the placed fittings to enable the fittings to be pre-positioned on the collecting pipe;

s5: and the movable welding robot sequentially welds the accessories.

As a further improvement of the above technical solution, the following steps are further included between step S4 and step S5:

s401: inserting the heating resistor wrapped with the insulating frame outside into the collecting pipe, and loading heating voltage at two ends of the heating resistor to heat the collecting pipe;

when the heating is carried out on the collecting pipe, the heating voltage is slowly increased, and when the heating temperature of the heating assembly at the cutting hole is the same as the welding temperature at the cutting hole, the heating voltage is kept unchanged;

the heating voltage is slowly reduced while cooling the manifold.

The invention has the beneficial effects that:

1. the collecting pipe is only required to be clamped once for cutting and welding, the problem of welding precision reduction caused by inconsistent clamping benchmarks for many times is avoided, and meanwhile, the workload of clamping and jumping measurement is reduced.

2. The heating assembly heats the collecting pipe, so that the temperature of the collecting pipe is slowly reduced from the position of the cutting hole to the two sides of the cutting hole, the sudden change of the local temperature is avoided when the collecting pipe is locally heated, and the stress generated by welding is reduced on the basis of saving certain energy.

Drawings

FIG. 1 is a schematic view of a welding apparatus according to the present invention.

Fig. 2 is a schematic diagram of the heating resistor and the header according to the present invention.

Fig. 3 is a plan view of the heating resistor of the present invention.

Fig. 4 is a partial cross-sectional view of a heating resistor of the present invention.

Fig. 5 is a schematic structural view of the insulation frame of the present invention.

Fig. 6 is a schematic structural view of the planar tool of the present invention.

Wherein the figures include the following reference numerals: 1. three-jaw chuck, 2, chuck frock, 3, pressure manifold subassembly, 31, pressure manifold, 32, accessory, 41, first ground rail, 42, second ground rail, 5, looks transversal cutting machine, 6, welding robot, 7, heating resistor, 71, resistance block, 72, electrode piece, 73, insulator bracket, 7301, the insulating ring, 7302, insulating connecting rod, 74, through-hole, 8, plane frock, 9, spliced pole, 10, plane welding product, 11, disk seat location frock.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for completeness and fully convey the scope of the invention to the skilled person.

As shown in fig. 1-6, a header pipe cutting and welding integrated device includes a first ground rail 41, a cutting machine, a welding machine, a second ground rail 42, and a three-jaw chuck 1, wherein the cutting machine is movably disposed on the first ground rail 41 and is used for cutting a cutting hole in a header pipe; the welding machine is movably arranged on the first ground rail 41 and is used for welding the collecting main and the fittings 32; a second ground rail 42 is arranged beside the first ground rail 41; one end of the second ground rail 42 is provided with the three-jaw chuck 1; the valve seat positioning tool 11 is movably arranged on the second ground rail 42, and the valve seat positioning tool 11 is a lifting support seat and is used for supporting the collecting pipe; the collecting pipe is clamped between the three-jaw chuck 1 and the valve seat positioning tool 11; the chuck tool 2 is movably arranged on the second ground rail 42, and the chuck tool 2 is used for clamping the fitting 32 and enabling the fitting 32 to be matched with the collecting main.

A collecting main and a plurality of fittings 32 are welded to form a collecting main assembly 3, when the fittings 32 are welded to the collecting main, the collecting main is firstly clamped, one end of the collecting main is clamped by a three-jaw chuck 1, the other side of the collecting main is supported and fixed by a valve seat positioning tool 11, then a plurality of cutting holes are cut on the collecting main by a cutting machine, then the fittings 32 are clamped on a chuck tool 2, the chuck tool 2 is moved to place the fittings 32, the fittings 32 and the cutting holes are opposite, then the placed fittings 32 are fixed on the collecting main by manual spot welding, the pre-positioning of the fittings 32 is realized, and finally, welding seams between the fittings 32 and the cutting holes are welded in sequence by a welding machine.

It should be noted that, in the existing header pipe welding process, the center is generally adopted to fix the three-jaw chuck 1, the acceptance area of the center is small, the header pipe is easy to shift in the welding process to cause the change of the reference, and the three-jaw chuck 1 is more stable in clamping the header pipe, so that the reference is ensured not to change.

In this embodiment, both the cutter and the welder are controlled to move by an automated program to improve the efficiency of the welding.

In this embodiment, the cutting machine and the welding machine share one ground rail, which reduces the need for one ground rail compared to the prior art.

In this embodiment, cutting and welding only need carry out a clamping to the pressure manifold, have avoided the inconsistent problem that causes welding precision to reduce of many times clamping benchmark, have also reduced the work load of clamping and survey simultaneously.

Further, the heating device comprises a heating assembly, the heating assembly is arranged in the collecting pipe, the heating assembly penetrates through the whole collecting pipe, the heating temperature of the heating assembly is slowly reduced from the hole cutting position to the two sides of the hole cutting position, and the heating temperature of the heating assembly at the hole cutting position is the same as the welding temperature of the heating assembly at the hole cutting position.

In this embodiment, the heating subassembly heats the pressure manifold for the temperature of pressure manifold slowly reduces from cutting hole department toward cutting hole both sides, thereby has avoided the abrupt change of local temperature to appear when the local heating pressure manifold, thereby has realized having reduced the stress that the welding produced on the basis of having practiced thrift certain energy.

Further, the heating component is a heating resistor 7, the heating resistor 7 comprises a plurality of resistor blocks 71 and electrode plates 72 arranged between the resistor blocks 71, the resistor blocks 71 are connected in series by the electrode plates 72, and heating voltage is loaded at two ends of the heating resistor 7; the resistance of the resistance block 71 at the cut-off position in the collector pipe is the largest, and the resistance of the resistance blocks 71 at the two sides of the collector pipe is slowly reduced.

In the embodiment, a heating voltage is applied to two ends of the heating resistor 7, and since each resistor block 71 is connected in series, the current flowing through each resistor block 71 is the same, the heating power of the resistor block 71 is determined by the resistance, the resistance of the resistor block 71 at the cut-off position in the header pipe is the largest, and the resistances of the resistor blocks 71 at two sides of the header pipe are slowly reduced, so that the heating temperature of the header pipe is slowly reduced from the cut-off position to the two sides of the cut-off position.

Furthermore, the resistance blocks 71 are round blocks with equal radius and are provided with through holes 74 in the axial direction; the radius of the through hole 74 of the resistance block 71 at the cut position in the header pipe is the largest, the thickness of the through hole is larger than the width of the cut position nearby, the radius of the through hole 74 of the resistance block 71 on two sides is gradually reduced, and the axial thickness of the resistance block 71 on two sides is gradually reduced.

The resistance blocks 71 are round blocks with equal radius, and the effective cross section and the thickness of the resistance blocks are determined, in the embodiment, the radius of the through hole 74 of the resistance block 71 at the cut position in the collecting pipe is the largest, the radius of the through holes 74 of the resistance blocks 71 at two sides of the through hole is gradually reduced, and the axial thickness of the resistance blocks 71 at two sides of the through hole is gradually reduced, so that the resistance of the resistance block 71 at the cut position in the collecting pipe is the largest, the resistance of the resistance blocks 71 at two sides of the through hole is slowly reduced, and the heating assembly is simple in structure and easy to machine.

In the embodiment, the thickness of the resistance block 71 is larger than the width of the cutting hole nearby, so that the temperature consistency at the cutting hole is ensured, the temperature is the same as the welding temperature, and the stress caused by the temperature difference formed at the cutting hole is avoided.

In the present embodiment, the resistor block 71 is a round block and has the same shape as the header, so that the heating assembly can better match with the header and can heat the header more uniformly.

Further, the heating resistor further comprises an insulating frame 73, the outer side of the heating resistor 7 is wrapped by the insulating frame 73, the insulating frame 73 abuts against the inner wall of the collecting pipe, and the insulating frame 73 comprises an insulating ring 7301 sleeved on the electrode plate 72 and an insulating connecting rod 7302 connected between the insulating ring 7301.

In this embodiment, the insulating frame 73 is used to isolate the resistor block 71 from the header, thereby avoiding an electric shock.

Further, the cutting machine is an intersecting line cutting machine 5, and the welding machine is a welding robot 6.

In the present embodiment, the welding robot 6 is a six-axis automatic welding robot 6.

Further, still including plane frock 8 and spliced pole 9, spliced pole 9 sets up in plane frock 8 one side, and spliced pole 9 can cooperate with three-jaw chuck 1, and plane welding product 10 is placed and is welded at plane frock 8 by the welding machine.

When the plane welding product 10 needs to be processed, the connecting column 9 of the plane tool 8 is clamped on the three-jaw chuck 1, then the plane welding product 10 is placed on the plane tool 8, the plane tool 8 is driven to rotate by rotating the three-jaw chuck 1, then the plane welding product 10 rotates by different angles, then the plane welding product 10 is welded at different positions, and the function of the device is expanded.

The embodiment also provides a header pipe cutting and welding method based on the integrated welding device, which comprises the following steps:

s1: clamping one end of the collecting pipe on a three-jaw chuck, moving a valve seat positioning tool on a second ground rail, and supporting the other side of the collecting pipe by the valve seat positioning tool;

s2: moving an intersecting line cutting machine on the first ground rail, and cutting a cutting hole at the set position of the collecting pipe by using the intersecting line cutting machine;

s3: clamping the accessory on a chuck tool, and moving the chuck tool to place the accessory so that the accessory is matched with the cutting hole;

s4: spot-welding the placed fittings to enable the fittings to be pre-positioned on the collecting pipe;

s5: and the movable welding robot sequentially welds the accessories.

Through the steps, only one-time clamping is needed for the collecting pipe in cutting and welding, the problem that welding precision is reduced due to the fact that multiple times of clamping benchmarks are inconsistent is solved, and meanwhile the workload of clamping and jumping measurement is reduced.

Further, the following steps are also included between step S4 and step S5:

s401: inserting the heating resistor wrapped with the insulating frame outside into the collecting pipe, and loading heating voltage at two ends of the heating resistor to heat the collecting pipe;

when the heating is carried out on the collecting pipe, the heating voltage is slowly increased, and when the heating temperature of the heating assembly at the cutting hole is the same as the welding temperature at the cutting hole, the heating voltage is kept unchanged;

the heating voltage is slowly reduced while cooling the manifold.

The uniform variation in heating voltage further allows the heating stack to heat and cool the manifold more uniformly.

The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.