CN212495906U

CN212495906U - Automatic welding equipment for metal hose

Info

Publication number: CN212495906U
Application number: CN202020604646.1U
Authority: CN
Inventors: 刘永; 叶朝晖; 朱广松
Original assignee: Aerosun Corp
Current assignee: Aerosun Corp
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-02-09
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to an automatic equipment that welds of metal collapsible tube belongs to metal collapsible tube and makes technical field. The equipment comprises a closed cavity unit, a welding gun positioning unit, an automatic blanking unit and a positioning rotary unit; the automatic blanking unit is positioned above the positioning rotary unit; the closed cavity unit is positioned at one end of the positioning rotary unit, and the welding gun positioning unit is positioned at one side of the positioning rotary unit. The utility model properly solves the problems of automatic and continuous blanking, feeding and positioning and rotary ring welding of the metal hose joint assembly; on one hand, the outer limit of the joint component is organically combined with the inner center of the corrugated pipe by means of the centering core rod, so that the joint component and the corrugated pipe can be accurately positioned, and on the other hand, the flap rubber sealing gasket of the closed cavity unit is used for realizing that the joint component and the corrugated pipe can conveniently enter a gas protection environment to be in place and be taken out after welding; as a result, the metal hose can be efficiently welded in batches, the defects of poor manual positioning precision, uneven welding end parts and the like are thoroughly overcome, and the consistency of welding quality is ensured.

Description

Automatic welding equipment for metal hose

Technical Field

The utility model relates to a welding equipment, especially an automatic welding equipment of metal collapsible tube belongs to bellows and makes technical field.

Background

Small-diameter metal hoses, such as metal hoses for stoves, are required to have comprehensive properties of flexibility, vibration resistance, pressure resistance, corrosion resistance, fatigue resistance and the like, and actually comprise thin-wall stainless steel metal corrugated pipes, PVC coating layers, buckling rings and joint assemblies. Common joint assemblies include G1/2 threads and a socket-type thread structure (see fig. 11 and 15). During manufacturing, after the metal corrugated pipe is coated with a PVC protective layer, the end part of the corrugated pipe is subjected to half-wave beating (i.e. flattening), then a buckling and pressing ring is sleeved, and then the metal corrugated pipe is in butt joint and ring welding with a joint assembly.

For a long time, small-caliber metal hoses for cooking utensils and the like are always subjected to open welding by using a traditional simple welding positioning tool, the end part of a corrugated pipe which is coated with plastic is sleeved into a buckling ring and then aligned with a welding connecting pipe of a joint component, the position of a welding gun is manually adjusted, and the corrugated pipe body is rotated to perform arc welding. The traditional welding method can not avoid oxidation in the welding process, and has unstable welding quality and low production efficiency.

Chinese patent documents CN101486125B, CN103934556A, CN203918190U, CN107088714A, and CN108672934A disclose some welding and positioning tools for pipe connectors. However, the prior art is not designed for gas shielded welding of small-caliber metal hose connectors, and therefore, the prior art cannot be applied to properly solving two major bottleneck problems of realizing high-efficiency and high-quality welding of small-caliber metal hoses 1) automatic and continuous blanking and feeding positioning of metal hose connector assemblies; 2) the rotary ring welding of the metal corrugated pipe end and the joint assembly in a gas protection environment.

In order to avoid confusion of technical term meanings, the metal corrugated pipe refers to a bare pipe and does not contain a joint, a coating layer and a buckling ring; the corrugated pipe unit does not contain a joint, but contains a coating layer and a buckling ring; the metal hose means a final product including a joint.

Disclosure of Invention

The utility model aims to provide a: the automatic metal hose welding equipment properly solves the problems of automatic continuous blanking, feeding and positioning of the joint component and reliable positioning and rotary ring welding of the end part of the metal corrugated pipe and the joint component in a gas protection environment, thereby efficiently completing the welding process of the small-caliber metal hose with high quality.

In order to achieve the above object, the utility model discloses automatic equipment that welds of metal collapsible tube's basic technical scheme is: comprises a closed cavity unit, a welding gun positioning unit, an automatic blanking unit and a positioning rotary unit which are arranged on a workbench;

the automatic blanking unit is positioned above the positioning rotary unit; the sealed cavity unit is positioned at one end of the positioning rotary unit, and the welding gun positioning unit is positioned at one side of the positioning rotary unit;

the automatic blanking unit comprises a material box at least provided with two rows of vertical joint component channels, the first row of joint component channels extend downwards to a discharge channel of a discharge port, and the lower ends of the rear row of joint component channels are communicated with the discharge channel through a downward inclined slide way; an electromagnetic horizontal opening and closing mechanism is arranged above the discharge port, and an electromagnetic downward sliding opening and closing mechanism is arranged on the front side of a downward inclined slideway at the lower end of the rear row joint assembly channel;

the positioning rotary unit comprises a box body supporting a horizontal rotation driving mechanism, the output end of the rotation driving mechanism is in transmission connection with a centering core rod which is right opposite to the discharge hole, and the positioning rotary unit is provided with a positioning sleeve which circumferentially restrains the in-place rear connector assembly;

two ends of a hollow closed cavity of the closed cavity unit are respectively provided with a fixed end cover and an inserting end cover; one side of the welding observation hole is provided with a welding observation hole, and the upper part of the welding observation hole is provided with a welding gun inserting hole;

a centering core rod penetrates through the fixed end cover, and the excircle of the centering core rod is matched with the meridian passage of the metal corrugated pipe;

the central perforation of the insertion end cover is provided with a flap rubber sealing gasket which is composed of a group of rubber sheets with fixed outer ends and elastically closed inner ends.

When welding is needed, the joint assemblies automatically arranged in the first column of vertical channels of the blanking unit material box reach the lower part of the discharging channel, and the joint assembly at the bottom is opened and released by the electromagnetic horizontal opening and closing mechanism to reach the discharging port; then, after the end part of the corrugated pipe of which the covering layer is sleeved with the buckling ring is exposed out of a complete beating end, the end part of the corrugated pipe penetrates through the centering core rod together with the joint assembly and penetrates through the valve rubber sealing gasket to be pushed into a position to be welded in the closed cavity; then, protective gas is filled, a welding gun is lowered for arc starting and spot welding, the end of the corrugated pipe unit is welded with the joint assembly, and the rotary driving mechanism starts to drive to rotate to complete girth welding; after cooling, the protective gas is closed, the welding gun is lifted, the metal corrugated pipe is pulled out from the closed cavity along the centering core rod, and the process is repeated, so that continuous production can be realized. And after all the first row of joint component channels enter the blanking channel, the electromagnetic sliding opening and closing mechanism corresponding to the second example is controlled to be opened, so that the blanking can be continuously supplemented by the second example, and the continuous automatic welding for a longer time is maintained.

Therefore, the utility model properly solves the problems of automatic continuous blanking, feeding positioning and rotary ring welding of the metal hose joint assembly; on one hand, the outer limit of the joint component is organically combined with the inner center of the corrugated pipe by means of the centering core rod, so that the joint component and the corrugated pipe can be accurately positioned, and on the other hand, the flap rubber sealing gasket of the closed cavity unit is used for realizing that the joint component and the corrugated pipe can conveniently enter a gas protection environment to be in place and be taken out after welding; as a result, the metal hose can be efficiently welded in batches, the defects of poor manual positioning precision, uneven welding end parts and the like are thoroughly overcome, and the consistency of welding quality is ensured.

The utility model discloses further perfect still:

the diaphragm rubber sealing gasket is composed of a group of trapezoidal rubber sheets, wherein the long sides of the trapezoidal rubber sheets are used as outer ends and fixed on the central perforation circumference of the insertion end cover, the short sides of the trapezoidal rubber sheets are used as inner ends and elastically closed, the adjacent waists of the trapezoidal rubber sheets are mutually closed, and the short sides of the trapezoidal rubber sheets surround a positioning sliding block insertion hole with a closed diameter matched with the positioning core rod.

The welding gun positioning unit is positioned below a declination slide way of the automatic blanking unit and comprises a fixed base for supporting a transverse adjusting mechanism, the transverse adjusting mechanism is provided with a longitudinal adjusting mechanism, the longitudinal adjusting mechanism is hinged with a rotary adjusting mechanism with a horizontal shaft, the rotary adjusting mechanism is provided with an upper adjusting mechanism and a lower adjusting mechanism, the upper adjusting mechanism and the lower adjusting mechanism are provided with a linear driving mechanism, and the extending end of the linear driving mechanism is provided with a welding gun clamping block for clamping a welding gun.

The centering core rod is tightly matched with a positioning sleeve with end face teeth, and one end of the joint component, corresponding to the positioning sleeve, is provided with a meshing boss matched with the end face teeth.

The horizontal rotation driving mechanism is composed of a servo motor and a speed reducer, an inner cone flange at the output end of the speed reducer is provided with an inner cone hole, and a cone sleeve for fixing the centering core rod is tightly inserted into the inner cone hole through an outer cone handle to form transmission connection of the centering core rod facing the discharge hole.

The upper part of the material box is a stacking space for automatically aligning the joint components, and the stacking space to the inclined downward sliding channel is provided with a plurality of vertical joint component channels separated by guide rails.

The upper part of the closed cavity unit fixes a welding gun sealing gasket by means of a powerful magnetic block, and the middle part of the welding gun sealing gasket is provided with a welding gun inserting hole.

The front side of the hollow closed chamber is provided with a welding observation port inserted with an arc light filtering eyepiece.

And a seam-riding screw is arranged between the outer taper shank and the inner taper hole.

The working tables are arranged in a double-station symmetrical structure.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic partial enlarged perspective view of the embodiment of fig. 1 (with the sealed chamber unit removed).

Fig. 3 is a schematic perspective view of the automatic blanking unit in the embodiment of fig. 1.

Fig. 4 is a schematic perspective view of a solder mask portion in the embodiment of fig. 1.

Fig. 5 is a schematic perspective view of the welding gun inserted into the sealed cavity unit in the embodiment of fig. 1 (the bracket is omitted).

Fig. 6 is a schematic perspective view of the sealed cavity unit in the embodiment of fig. 1.

Fig. 7 is a schematic perspective view of the positioning rotation unit in the embodiment of fig. 1.

Fig. 8 is a schematic cross-sectional structure of fig. 7.

FIG. 9 is a schematic cross-sectional view of a joint assembly to be welded according to the embodiment of FIG. 1.

Fig. 10 is a perspective view of the welded joint of fig. 9.

FIG. 11 is a schematic view of the welded threaded connection structure metal hose of the embodiment of FIG. 1.

Fig. 12 is a schematic perspective view of the multi-dimensional adjusting welding gun positioning unit in the embodiment of fig. 1.

Fig. 13 is a structural diagram of a feeding state of the embodiment of fig. 1 (omitting the closed cavity unit).

Fig. 14 is a structural diagram of the embodiment of fig. 1 in a welding position state (the sealed cavity unit is omitted).

Fig. 15 is a schematic structural view of a socket-type threaded metal hose according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example one

The automatic metal hose welding equipment of the embodiment is shown in fig. 1, and comprises two sets of closed cavity units 3, a welding gun positioning unit 6, an automatic blanking unit 7 and a positioning rotary unit 8 which are respectively arranged on a workbench 4 with a double-station symmetrical structure. The automatic blanking units 7 of each set are positioned above the positioning rotary unit 8, the closed cavity unit 3 is positioned at one end of the positioning rotary unit 8, and the welding gun positioning unit 6 is positioned at one side of the positioning rotary unit 8. In fig. 1, 1 is a control unit, 5 is a bellows unit to be welded, and 9 is a welder system.

The automatic blanking unit 7 is shown in fig. 2 and 3, the automatic blanking unit 7 is shown in fig. 2, the upper part of a material box 705 with an inclined downward sliding channel at the bottom is a stacking space which can enable the joint assemblies 501 to be automatically aligned, the stacking space to the inclined downward sliding channel is provided with vertical joint assembly channels separated by a plurality of rows of guide rails 704, and except that the first row of joint assembly channels extends downwards to the discharge channel of the discharge port 701, the lower ends of the rear row of vertical joint assembly channels are communicated with the discharge channel through downward inclined slideways. An electromagnetic horizontal opening and closing mechanism 702 is arranged above the discharge port 701, and corresponding electromagnetic downward sliding opening and closing mechanisms 703 are respectively arranged on the front sides of downward inclined slideways at the lower ends of the rear row of joint assembly channels. Therefore, after the joint assemblies are fully arranged in the material box, automatic blanking can be maintained for a long time, when all the joint assemblies in the first row of joint assembly channels enter the blanking channel and are output from the discharge port one by one, the electromagnetic sliding opening and closing mechanism corresponding to the second example is controlled to be opened, so that the joint assemblies can be continuously supplied to the blanking channel through the sliding channel by the second example of joint assembly channels, and the feeding requirement of contact welding production is met; repeating the steps until all the joint assemblies in the last row of joint assembly channels enter the blanking channel; therefore, the continuous automatic welding of feeding in a layered and anti-interference mode and maintaining eight hours (two shifts) during one-time charging can be realized through automatic identification control.

As shown in fig. 2, the positioning and rotating unit 8 includes a box 802 supporting a horizontal rotation driving mechanism, the rotation driving mechanism is composed of a servo motor 804 and a speed reducer 803, an inner conical flange 8014 serving as an output end of the speed reducer 803 has an inner conical hole, and a conical sleeve 8013 fixing the centering core rod 8011 is tightly inserted into the inner conical hole through an outer conical handle thereof, so as to realize transmission connection of the centering core rod 8011 facing the discharge port, and specific transmission connection relationships refer to fig. 7 and 8. In order to ensure the reliable combination of the outer taper shank and the inner taper hole, a riding screw 8015 is arranged between the outer taper shank and the inner taper hole. A positioning sleeve 8012 with end face teeth is tightly matched on the centering core rod 8011, and one end of the joint component 501 corresponding to the positioning sleeve 8012 is provided with a meshing boss matched with the end face teeth, so that circumferential restraint is formed after the joint component 501 is in place, and the servo motor drives the joint component 501 to perform rotary welding motion. Practice proves that the structure can reliably ensure effective power transmission of welding of the joint assembly and the metal corrugated pipe by means of the hollow speed reducer.

As shown in fig. 4, 5, and 6, the sealed chamber unit 3 has a cylindrical hollow sealed chamber 305 as a sealed chamber unit main body supported by vertical supports 301 at both ends thereof, a welding observation port 304 into which an arc filter eyepiece 303 is inserted is provided on the front side, a torch gasket 307 is fixed to the upper part via a strong magnetic block 306, and a torch insertion hole is provided in the middle part of the torch gasket 307. The two ends of the sealed chamber 305 are respectively provided with a fixed end cover 302 and an inserting end cover 310 through a sealing gasket 308, wherein the fixed end cover is penetrated with a centering core rod 8011, the inserting end cover 310 is provided with a central perforation provided with a flap rubber sealing gasket 309, the flap rubber sealing gasket 309 is composed of a group of trapezoidal rubber sheets with long sides as outer ends fixed on the periphery of the central perforation and short sides as inner ends, the trapezoidal rubber sheets are elastically closed, the adjacent waists of the trapezoidal rubber sheets are mutually jointed, and the short sides of the trapezoidal rubber sheets are surrounded into a penetrating hole with a closed aperture matched with the outer diameter of the positioning core rod. Therefore, the elastic deformation of each trapezoidal rubber sheet allows the joint component and the corrugated pipe unit to pass through, and once the corrugated pipe unit passes through, an ideal closed cavity can be formed due to the fact that the closed diameter of the rubber sheet after elastic reset is matched with the positioning core rod, and protection gas can be filled conveniently. In addition, the fixed end cap 302 is provided with a vent port A1 for introducing shielding gas, and the vent port A1 provides inert gas such as argon or nitrogen into the sealed cavity unit 3 as required by the shielding gas system to protect during the welding process. During welding, the welding gun 902 passes through the welding gun port to enter the sealed cavity and approach the welding core rod 8011, and the welding of the joint assembly 501 of the metal hose 5 and the corrugated pipe is completed in the rotation process of the welding gun.

The connector assembly 501 of this embodiment is shown in fig. 9 and 10, and is composed of a G1/2 nut 5012 sleeved on a welded connection tube 5011 as in the prior art, wherein one end of the welded connection tube 5011 corresponding to the positioning sleeve 8012 is provided with an engaging boss 501' matched with the end face teeth. Fig. 11 shows a metal hose obtained by welding a joint assembly 501 to an end of a corrugated tube assembly comprising a metal corrugated tube 503, a crimping ring 502, and a PVC coating 504.

The welding gun positioning unit 6 of the embodiment is positioned below the declination slideway of the automatic blanking unit, and the space is reasonably utilized. As shown in fig. 12, the unit includes a fixed base 601 supporting a lateral adjustment mechanism 602, a longitudinal adjustment mechanism 603 is mounted on the lateral adjustment mechanism 602, and the lateral adjustment mechanism 602 and the longitudinal adjustment mechanism 603 are respectively formed by corresponding screw nut moving pairs. The longitudinal adjusting mechanism 603 is hinged with a rotary adjusting mechanism 605 with a horizontal shaft, the rotary adjusting mechanism 605 is provided with an up-down adjusting mechanism 604, the up-down adjusting mechanism 604 is provided with a three-shaft cylinder (TCM 10 multiplied by 20 type) 606 as a linear driving mechanism through a screw nut moving pair, and the extending end of the linear driving mechanism is provided with a welding gun clamping block 607 for clamping a welding gun 902. Therefore, through multi-dimensional adjustment, the front, back, left and right positions of the welding gun can be conveniently adjusted, the gun feeding direction of the welding gun and the distance between the welding gun and a welding position can be accurately adjusted, and a foundation is laid for realizing high-quality full-automatic welding.

The automatic welding and conveying device for the metal corrugated pipe joint for the kitchen range comprises the following basic working processes: and putting the joint component into an automatic blanking unit material box, and sleeving a buckling and pressing ring at one end of the metal corrugated pipe after plastic coating to the tail end of the coating layer, so that the tail end of the buckling and pressing ring is attached to the tail end of the coating layer and 2-3 complete waves are exposed for convenient welding. Then, one end of a corrugated pipe unit consisting of the corrugated pipe, the coating layer and the buckling ring is aligned with the automatic blanking discharge hole, and the end part of the positioning core rod is pushed to the inside of the sealed cavity to enable the tooth shape of the welding pipe positioning sleeve to be embedded into the meshing boss of the welding connecting pipe (see fig. 13 and 14). And introducing protective gas to perform welding pre-protection, starting an automatic welding switch, automatically dropping a welding gun to a welding position for spot welding along with the multidimensional adjustment positioning unit, and driving the joint assembly and the corrugated pipe unit to complete 360-degree annular welding by the rotation of a positioning core rod of the positioning rotary unit along with the servo motor. And the welding gun automatically resets along with the multidimensional adjusting and positioning unit, and the corrugated pipe unit at one welding end is drawn out and sent to another workbench to be welded at the other end according to the same steps. And (4) inspecting the metal hose with the two welded ends to be qualified to obtain the metal hose finished product for the stove.

Example two

The basic structure of the metal hose joint arc welding device for the kitchen range in this embodiment is the same as that in the embodiment, except that the metal hose to be welded is a metal bellows with a socket type threaded connection structure as shown in fig. 15, and the metal bellows comprises a socket type threaded joint component 505 ', a bellows 503 ', a buckling ring 502 ', and a PVC coating layer 504 ', the socket type threaded component 505 ' is composed of a socket type thread 5052 ' and a welding connection pipe 5051 ', the bellows 503 ' is externally coated with a PVC coating layer 504 ' and is preserved with 2-3 waves at two ends, the buckling ring 502 ' is sleeved before welding at two ends, and the ring wave at the end of the bellows is butt-ring welded with the welding connection pipe 5051 '.

Practice shows that the metal hose joint shielded welding device for the kitchen range has the following advantages:

1. adopt duplex position joint protection welding technology to carry out the corrugated metal pipe welding, with the protection welding, quick clamping pay-off, automatic positioning multichannel process fuses, can realize two kinds of joint subassembly structural style metal collapsible tube frock quick replacement for cooking utensils, welding quality has effectively been promoted, positioning accuracy, compare traditional welding technology, the protection welding device provides accurate automatic positioning technique, welding process atmosphere protection atmosphere and joint subassembly quick feeding mechanism, the problem of traditional welding seam quality poor has been solved, the oxidation degree is high, welder location is difficult, welding efficiency hangs down.

2. By means of the ventilation interface mechanism, the functions of active inflation protection in the welding process, rapid cooling in welding, automatic gas cutoff after welding and the like are realized, the cost of shielding gas can be reduced by adopting cheap shielding gas such as nitrogen and the like, and meanwhile, the welding appearance quality of a product is ensured.

3. The specially designed airtight cavity unit has the advantages that the welding process is observed in real time, the welding gun inlet is sealed and protected by adopting the flexible silicon rubber sheet, the problem of feeding and sealing of a large joint nut and a small pipe body is solved by adopting a valve type structure at the pipe body inlet, the design scheme of a minimized cavity is adopted, and the minimum protective gas leakage amount and the maximum protective welding in the welding process are realized.

4. The flexible positioning unit of welder can realize the accurate automatic positioning of welding point, has solved the poor, the welding inefficiency problem of artifical positioning accuracy, has set up unique postweld dwell time control simultaneously, and postweld protection time is not enough promptly and not lifts the rifle and handles, has effectively promoted welding quality.

5. The sealed cavity welding protection mechanism is designed to reduce the damage to human bodies caused by the leakage of arc light in argon arc welding to the maximum extent, meanwhile, the sealed cavity is provided with a welding observation port, the welding process can be conveniently observed, and meanwhile, the sealed cavity can effectively collect dust generated in the welding process so as to reduce the dust suction hazard of operators.

In addition to the above embodiments, the present invention may have other embodiments. For example, the fixing structure of the closed chamber fixed on the vertical supports at the two ends can be replaced by directly fixing the fixing end cover on the output shell of the speed reducer or other fixing positions, and the like. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The utility model provides a metal collapsible tube automatic weld equipment which characterized in that: comprises a closed cavity unit (3), a welding gun positioning unit (6), an automatic blanking unit (7) and a positioning rotary unit (8) which are arranged on a workbench (4);

the automatic blanking unit (7) is positioned above the positioning rotary unit (8); the closed cavity unit (3) is positioned at one end of the positioning rotary unit (8), and the welding gun positioning unit (6) is positioned at one side of the positioning rotary unit (8);

the automatic blanking unit comprises a material box (705) at least provided with two rows of vertical joint assembly channels, the first row of joint assembly channels extend downwards to a discharge channel of a discharge port (701), and the lower ends of the rear row of joint assembly channels are communicated with the discharge channel through a declination slide way; an electromagnetic horizontal opening and closing mechanism (702) is arranged above the discharge port, and an electromagnetic downward sliding opening and closing mechanism (703) is arranged on the front side of a downward inclined slideway at the lower end of the rear row joint assembly channel;

the positioning rotary unit comprises a box body (802) supporting a horizontal rotation driving mechanism, the output end of the rotation driving mechanism is in transmission connection with a centering core rod (8011) which is right opposite to the discharge hole, and the positioning rotary unit is provided with a positioning sleeve (8012) which circumferentially restrains the rear connector assembly in place;

two ends of a hollow closed cavity (305) of the closed cavity unit are respectively provided with a fixed end cover (302) and an inserting end cover (310); one side of the welding observation hole is provided with a welding observation hole (304), and the upper part of the welding observation hole is provided with a welding gun inserting hole;

a centering core rod (8011) penetrates through the fixed end cover, and the excircle of the centering core rod is matched with the meridian of the metal corrugated pipe;

the central perforation of the insertion end cover is provided with a flap rubber sealing gasket (309), and the flap rubber sealing gasket is composed of a group of rubber sheets with fixed outer ends and elastically closed inner ends.

2. The automatic metal hose welding apparatus according to claim 1, wherein: the diaphragm rubber sealing gasket is composed of a group of trapezoidal rubber sheets, wherein the long sides of the trapezoidal rubber sheets are used as outer ends and fixed on the central perforation circumference of the insertion end cover, the short sides of the trapezoidal rubber sheets are used as inner ends and elastically closed, the adjacent waists of the trapezoidal rubber sheets are mutually closed, and the short sides of the trapezoidal rubber sheets surround a positioning sliding block insertion hole with a closed diameter matched with the positioning core rod.

3. The automatic metal hose welding apparatus according to claim 1 or 2, characterized in that: the welding gun positioning unit is positioned below a declination slide way of the automatic blanking unit and comprises a fixed base for supporting a transverse adjusting mechanism, the transverse adjusting mechanism is provided with a longitudinal adjusting mechanism, the longitudinal adjusting mechanism is hinged with a rotary adjusting mechanism with a horizontal shaft, the rotary adjusting mechanism is provided with an upper adjusting mechanism and a lower adjusting mechanism, the upper adjusting mechanism and the lower adjusting mechanism are provided with a linear driving mechanism, and the extending end of the linear driving mechanism is provided with a welding gun clamping block for clamping a welding gun.

4. The automatic metal hose welding apparatus according to claim 3, wherein: the centering core rod is tightly matched with a positioning sleeve with end face teeth, and one end of the joint component, corresponding to the positioning sleeve, is provided with a meshing boss matched with the end face teeth.

5. The automatic metal hose welding apparatus according to claim 4, wherein: the horizontal rotation driving mechanism is composed of a servo motor and a speed reducer, an inner cone flange at the output end of the speed reducer is provided with an inner cone hole, and a cone sleeve for fixing the centering core rod is tightly inserted into the inner cone hole through an outer cone handle to form transmission connection of the centering core rod facing the discharge hole.

6. The automatic metal hose welding apparatus according to claim 5, wherein: the upper part of the material box is a stacking space for automatically aligning the joint components, and the stacking space to the inclined downward sliding channel is provided with a plurality of vertical joint component channels separated by guide rails.

7. The automatic metal hose welding apparatus according to claim 6, wherein: the upper part of the closed cavity unit fixes a welding gun sealing gasket by means of a powerful magnetic block, and the middle part of the welding gun sealing gasket is provided with a welding gun inserting hole.

8. The automatic metal hose welding apparatus according to claim 7, wherein: the front side of the hollow closed chamber is provided with a welding observation port inserted with an arc light filtering eyepiece.

9. The automatic metal hose welding apparatus according to claim 8, wherein: and a seam-riding screw is arranged between the outer taper shank and the inner taper hole.

10. The automatic metal hose welding apparatus according to claim 9, wherein: the working tables are arranged in a double-station symmetrical structure.