A metal hose automatic welding equipment

Abstract

The present invention relates to synchronous automatic welding equipment for metal hose joints, and belongs to the technical field of metal hose manufacturing. The equipment includes a closed cavity unit, a welding gun positioning unit, an automatic blanking unit and a positioning rotary unit; the automatic blanking unit is located above the positioning rotary unit; the closed cavity unit is located at one end of the positioning rotary unit, and the welding gun positioning unit is located on one side of the positioning rotary unit. The present invention properly solves the problems of automatic and continuous blanking, feeding positioning, and rotary ring welding of metal hose joint assemblies; and on the one hand, with the help of a centering core rod, the outer limit of the joint assembly and the inner centering of the bellows are organically combined, so that the two can be accurately positioned; on the other hand, with the help of the membrane valve rubber sealing pad of the closed cavity unit, the two can be conveniently placed in the gas protection environment and removed after welding; as a result, the rapid batch welding of metal hoses can be efficiently completed, and the disadvantages of poor manual positioning accuracy and uneven welding ends can be completely avoided, ensuring the consistency of welding quality.

Description

Technical Field

[0001] The invention relates to welding equipment, in particular to automatic welding equipment for metal hoses, belonging to the technical field of bellows manufacturing. Background Art

[0002] Small-diameter metal hoses, such as those used in stoves, are required to have comprehensive properties such as flexibility, vibration resistance, pressure resistance, corrosion resistance, and fatigue resistance. They are actually composed of thin-walled stainless steel metal bellows, PVC coating, buckle rings, and connector components. Common connector components include G1 / 2 thread and socket thread structure (see Fig.11 , Fig.15 ) etc. During manufacturing, after the metal bellows is covered with a layer of PVC protective layer, the end of the bellows is subjected to half-wave knocking (i.e. flattening) treatment, and then the pressure ring is buckled, and then it is butt-welded with the joint assembly.

[0003] For a long time, small-diameter metal hoses such as those used for stoves have been welded in an open manner using traditional simple welding positioning tools. The plastic-coated bellows end is inserted into the buckle ring, then aligned with the welding pipe of the joint assembly, the welding gun position is manually adjusted, and the bellows body is rotated to start arc welding. This traditional welding method not only cannot avoid oxidation during the welding process, but also has unstable welding quality and low production efficiency.

[0004] Chinese patent documents with announcement numbers CN101486125B, CN103934556A, CN203918190U, CN107088714A, CN108672934A, etc. disclose welding positioning tools for some pipe fittings. However, the above-mentioned prior art is not designed for gas shielded welding of small-diameter metal hose joints, so it cannot be used to properly solve the two bottleneck problems of achieving efficient and high-quality small-diameter metal hose welding: 1) automatic continuous blanking and feeding positioning of metal hose joint components; 2) reliable in-place rotary ring welding of the metal bellows end and joint assembly in a gas shielded environment.

[0005] To avoid confusion in the meaning of technical terms, the metal bellows in this application refers to a bare tube, without joints, coatings, or clamping rings; the bellows unit does not contain joints but contains coatings and clamping rings; the metal hose refers to the final product including joints. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic welding device for metal hoses that properly solves the problem of automatic continuous blanking, feeding and positioning of joint components, and reliable in-position rotary ring welding of the end of a metal bellows and a joint component in a gas protection environment, thereby completing the welding process of small-diameter metal hoses with high efficiency and quality.

[0007] In order to achieve the above-mentioned purpose, the basic technical scheme of the metal hose automatic welding equipment of the present invention is: comprising a closed cavity unit, a welding gun positioning unit, an automatic blanking unit and a positioning rotation unit arranged on a workbench;

[0008] The automatic blanking unit is located above the positioning and rotating unit; the closed cavity unit is located at one end of the positioning and rotating unit, and the welding gun positioning unit is located at one side of the positioning and rotating unit;

[0009] The automatic blanking unit comprises a material box having at least two rows of vertical joint assembly channels, the first row of joint assembly channels extending downward to a discharge channel of a discharge port, and the lower ends of the rear row of joint assembly channels lead to the discharge channel through a downward-inclined slide; an electromagnetic horizontal opening and closing mechanism is installed above the discharge port, and an electromagnetic downward-inclined opening and closing mechanism is installed on the front side of the downward-inclined slide at the lower end of the rear row of joint assembly channels;

[0010] The positioning rotary unit comprises a box supporting a horizontal rotary drive mechanism, the output end of the rotary drive mechanism is drivingly connected to a centering core rod facing the discharge port, and has a positioning sleeve for circumferentially constraining the rear joint assembly in place;

[0011] The two ends of the hollow sealed chamber of the sealed chamber unit are respectively provided with a fixed end cover and an insertion end cover; and one side has a welding observation port and the upper part has a welding gun insertion hole;

[0012] A centering core rod is installed in the fixed end cover, and the outer circle of the centering core rod matches the diameter of the metal bellows;

[0013] The central through hole of the insertion end cover is provided with a membrane flap rubber sealing pad, and the membrane flap rubber sealing pad is composed of a group of rubber sheets with fixed outer ends and elastically closed inner ends.

[0014] When welding is required, the joint assembly arranged in the first vertical channel of the blanking unit material box reaches the lower part of the discharge channel, and the lowest joint assembly is opened and released by the electromagnetic horizontal opening and closing mechanism to reach the discharge port; then, the end of the bellows with a buckling ring on the coating layer is exposed to expose the complete knocking end, and then, together with the joint assembly, it is passed through the centering core rod and the membrane rubber sealing pad and pushed into the welding position in the closed chamber; after that, the protective gas is filled, the welding gun is lowered to start the arc spot welding, the end of the bellows unit and the joint assembly are welded together, and the rotary drive mechanism starts to drive the rotation to complete the ring welding; after cooling, the protective gas is turned off, the welding gun is raised, and the metal bellows is pulled out of the closed chamber along the centering core rod. Repeat the above process to achieve continuous production. When all the joint assembly channels in the first column enter the blanking channel, the electromagnetic sliding opening and closing mechanism corresponding to the second example is controlled to open, and the second example can continue to replenish the blanking, thereby maintaining continuous automatic welding for a longer period of time.

[0015] It can be seen that the present invention properly solves the problems of automatic continuous blanking, feeding positioning, and rotary ring welding of the metal hose joint assembly; and on the one hand, with the help of the centering core rod, the outer limit of the joint assembly and the internal centering of the bellows are organically combined, so that the two can be accurately positioned, and on the other hand, with the help of the membrane valve rubber sealing gasket of the closed cavity unit, the two can be easily placed in the gas protection environment and removed after welding; as a result, the batch rapid welding of metal hoses can be efficiently completed, and the disadvantages of poor manual positioning accuracy, uneven welding ends, etc. are completely avoided, ensuring the consistency of welding quality.

[0016] The present invention is further improved by:

[0017] The membrane valve rubber sealing gasket is composed of a group of trapezoidal rubber sheets with long sides as outer ends fixed to the central perforated circle of the insertion end cover and short sides as inner ends elastically closed. The adjacent waists of each trapezoidal rubber sheet are mutually matched, and the short sides of each trapezoidal rubber sheet form a positioning slider insertion hole with a closed diameter matching the positioning core rod.

[0018] The welding gun positioning unit is located below the downward inclined slide of the automatic blanking unit, and includes a fixed base supporting a lateral adjustment mechanism, a longitudinal adjustment mechanism is mounted on the lateral adjustment mechanism, a rotation adjustment mechanism with a horizontal axis is hinged on the longitudinal adjustment mechanism, the rotation adjustment mechanism is equipped with an up and down adjustment mechanism, the up and down adjustment mechanism is equipped with a linear drive mechanism, and a welding gun clamp for clamping the welding gun is mounted on the protruding end of the linear drive mechanism.

[0019] The centering core rod is tightly fitted with a positioning sleeve having end face teeth, and one end of the joint assembly corresponding to the positioning sleeve is provided with an engaging boss matched with the end face teeth.

[0020] The horizontal rotation drive mechanism is composed of a servo motor and a reducer. The inner conical flange at the output end of the reducer has an inner conical hole. The conical sleeve for fixing the centering core rod is tightly inserted into the inner conical hole through its outer conical handle to form a transmission connection with the centering core rod facing the discharge port.

[0021] 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 has a vertical joint component channel separated by multiple rows of guide rails.

[0022] The upper part of the closed cavity unit is fixed with a welding gun sealing gasket by means of a strong magnetic block, and the middle part of the welding gun sealing gasket is provided with a welding gun insertion hole.

[0023] The front side of the hollow sealed chamber is provided with a welding observation port for inserting an arc light filtering eyepiece.

[0024] A saddle screw is arranged between the outer tapered handle and the inner tapered hole.

[0025] The workbench is arranged in a double-station symmetrical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention.

[0027] Figure 2 for Figure 1 A schematic diagram of a partially enlarged three-dimensional structure in an embodiment (with the enclosed cavity unit removed).

[0028] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the automatic blanking unit in the embodiment.

[0029] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the protective welding part in the embodiment.

[0030] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the welding gun inserted into the closed cavity unit in the embodiment (the bracket is omitted).

[0031] Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the closed cavity unit in the embodiment.

[0032] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the positioning and rotating unit in the embodiment.

[0033] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure.

[0034] Fig. 9 for Figure 1 The embodiment is a schematic diagram of a cross-sectional structure of a welded joint assembly.

[0035] Fig.10 for Fig. 9 Schematic diagram of the three-dimensional structure of the welded pipe.

[0036] Fig.11 for Figure 1 Schematic diagram of the structure of a metal hose with a welded threaded connection structure in an embodiment.

[0037] Fig.12 for Figure 1 Schematic diagram of the three-dimensional structure of the multi-dimensionally adjustable welding gun positioning unit in the embodiment.

[0038] Fig.13 for Figure 1 Schematic diagram of the feeding state structure of the embodiment (the closed cavity unit is omitted).

[0039] Fig.14 for Figure 1Schematic diagram of the positioning welding state structure of the embodiment (the closed cavity unit is omitted).

[0040] Fig.15 This is a schematic diagram of the structure of a welded socket-type threaded metal hose according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0041] The present invention will be further explained below in conjunction with the accompanying drawings.

[0042] Embodiment 1

[0043] The metal hose automatic welding equipment of this embodiment is as follows Figure 1 As shown, it includes two sets of closed cavity units 3, welding gun positioning unit 6, automatic blanking unit 7 and positioning rotary unit 8 respectively arranged on a workbench 4 forming a double-station symmetrical structure. Each set of automatic blanking unit 7 is located above the positioning rotary unit 8, the closed cavity unit 3 is located at one end of the positioning rotary unit 8, and the welding gun positioning unit 6 is located at one side of the positioning rotary unit 8. Figure 1 1 is a control unit, 5 is a bellows unit to be welded, and 9 is a welding machine system.

[0044] Among them, the automatic blanking unit 7 is as follows Figure 2 and Figure 3 As shown, the automatic blanking unit 7 is as shown in Figure 2 As shown, the upper part of the material box 705 with an inclined downward sliding channel at the bottom is a stacking space that can automatically align the joint components 501. The stacking space to the inclined downward sliding channel has vertical joint component channels separated by multiple rows of guide rails 704. Except for the first row of joint component channels extending downward to the discharge channel of the discharge port 701, the lower ends of the vertical joint component channels in the rear rows lead to the discharge channel through the downward sliding channel. An electromagnetic horizontal opening and closing mechanism 702 is installed above the discharge port 701, and the front side of the downward sliding channel at the lower end of each rear row of joint component channels is respectively equipped with a corresponding electromagnetic downward opening and closing mechanism 703. Therefore, after the material box is filled with joint components, automatic blanking can be maintained for a long time - when all the joint components in the first row of joint component channels enter the blanking channel and are output one by one from the discharge port, the corresponding electromagnetic sliding opening and closing mechanism of the second example is controlled to open, and the second joint component channel can continue to supply joint components to the blanking channel through the sliding channel to meet the feeding needs of the welding production; and so on until all the joint components in the last row of joint component channels enter the blanking channel; thus, automatic identification and control can be used to realize hierarchical and interference-proof feeding in sequence, and one loading can maintain eight hours (two shifts) of continuous automated welding.

[0045] Positioning rotary unit 8 Figure 2As shown, it includes a box body 802 supporting a horizontal rotary drive mechanism, and the rotary drive mechanism is composed of a servo motor 804 and a reducer 803. The inner cone flange 8014 as the output end of the reducer 803 has an inner cone hole, and the tapered sleeve 8013 for fixing the centering core rod 8011 is tightly inserted into the inner cone hole through its outer cone handle, thereby realizing the transmission connection of the centering core rod 8011 facing the discharge port. For the specific transmission connection relationship, see Figure 7 , Figure 8 In order to ensure the reliable combination of the outer tapered shank and the inner tapered hole, a saddle screw 8015 is installed between the two. The centering core rod 8011 is tightly fitted with a positioning sleeve 8012 with end face teeth, and one end of the joint assembly 501 corresponding to the positioning sleeve 8012 has an engaging boss matched with the end face teeth, thereby constituting a circumferential constraint on the joint assembly 501 after it is in place, so as to realize the servo motor driving the joint assembly 501 to rotate and weld. Practice has proved that this structure can reliably ensure the effective power transmission of the joint assembly and the metal bellows welding with the help of a hollow reducer.

[0046] Sealed cavity unit 3 Figure 4 , Figure 5 , Figure 6 As shown, the cylindrical hollow sealed chamber 305 as the main body of the sealed chamber unit is supported on the vertical brackets 301 at both ends thereof, and has a welding observation port 304 for inserting an arc filter eyepiece 303 on the front side, and a welding gun sealing gasket 307 is fixed on the upper part by means of a strong magnetic block 306, and the middle part of the welding gun sealing gasket 307 has a welding gun insertion hole. The two ends of the sealed chamber 305 are respectively equipped with a fixed end cover 302 and an insertion end cover 310 through a sealing gasket 308, wherein the fixed end cover is penetrated by a centering core rod 8011, and the insertion end cover 310 has a central through hole equipped with a membrane flap rubber sealing gasket 309, and the membrane flap rubber sealing gasket 309 is composed of a group of long sides as outer ends fixed to the central through hole circumference, and short sides as inner ends elastically closed trapezoidal rubber sheets, the adjacent waists of each trapezoidal rubber sheet are mutually matched, and the short sides of each trapezoidal rubber sheet surround an interpenetrating hole whose aperture after closure matches the outer diameter of the positioning core rod. In this way, the elastic deformation of each trapezoidal rubber sheet allows the joint assembly and the bellows unit to pass through, and once through, since the closed diameter after elastic reset matches the positioning core rod, an ideal closed chamber can be formed, which is convenient for the filling of the protective gas. In addition, the fixed end cover 302 is equipped with a ventilation interface A1 for introducing protective gas. The ventilation interface A1 is provided by the protective gas system as needed to provide inert gas such as argon or nitrogen into the closed cavity unit 3 to play a protective role during the welding process. During welding, the welding gun 902 passes through the welding gun port into the closed cavity and approaches the welding core rod 8011. During its rotation, the welding of the joint assembly 501 of the metal hose 5 and the bellows is completed.

[0047] The connector assembly 501 of this embodiment is as follows Fig. 9 , Fig.10As shown, it is the same as the prior art, and is composed of a G1 / 2 nut 5012 sleeved on a welding pipe 5011, wherein one end of the welding pipe 5011 corresponding to the positioning sleeve 8012 has a meshing boss 501' that matches the end face teeth. When the joint assembly 501 is welded to the end of the bellows assembly consisting of a metal bellows 503, a buckling ring 502, and a PVC coating layer 504, the metal hose is as shown in FIG. Fig.11 shown.

[0048] The welding gun positioning unit 6 of this embodiment is located below the downward slope of the automatic blanking unit, making reasonable use of space. Fig.12 As shown, it includes a fixed base 601 supporting a transverse adjustment mechanism 602, and a longitudinal adjustment mechanism 603 is installed on the transverse adjustment mechanism 602. The transverse adjustment mechanism 602 and the longitudinal adjustment mechanism 603 are respectively composed of corresponding screw-nut moving pairs. A rotating adjustment mechanism 605 with a horizontal axis is hinged on the longitudinal adjustment mechanism 603, and the rotating adjustment mechanism 605 is equipped with an up-and-down adjustment mechanism 604. The up-and-down adjustment mechanism 604 is equipped with a three-axis cylinder (TCM10×20 model of AirTac) 606 as a linear drive mechanism through a screw-nut moving pair, and a welding gun clamp 607 for clamping the welding gun 902 is installed at the extended end of the linear drive mechanism. Therefore, through multi-dimensional adjustment, not only can the front, back, left, and right positions of the welding gun be adjusted very conveniently, but also the feeding direction of the welding gun and the distance from the welding point can be accurately adjusted, laying the foundation for achieving high-quality fully automatic welding.

[0049] The basic working process of the automatic welding and transmission device for metal bellows joints for stoves in this embodiment is as follows: put the joint assembly into the automatic blanking unit material box, put the buckle ring on one end of the metal bellows after plastic coating to the tail end of the coating layer, so that the tail end of the buckle ring fits with the tail end of the coating layer and exposes 2-3 complete waves for welding. Then align one end of the bellows unit composed of the bellows, coating layer and buckle ring with the automatic blanking outlet, push the end of the positioning core rod to the closed cavity, and the tooth shape of the welding pipe positioning sleeve is embedded in the meshing boss of the welding pipe (see Fig.13 , Fig.14 ). Introduce protective gas for welding pre-protection, start the automatic welding switch, the welding gun automatically drops to the welding position with the multi-dimensional adjustment positioning unit for spot welding, and the positioning core rod of the positioning rotary unit rotates with the servo motor to drive the joint assembly and the bellows unit to complete 360° circular welding. The welding gun automatically resets with the multi-dimensional adjustment positioning unit, and the bellows unit at one end of the welding is pulled out and sent to another workbench to weld the other end according to the same steps as above. After the two ends are welded, the metal hose is inspected and qualified to be the finished metal hose for stoves.

[0050] Embodiment 2

[0051] The basic structure of the protective welding device for the metal hose joint of the stove in this embodiment is the same as that in the embodiment. The difference is that the metal hose to be welded is as follows: Fig.15 As shown, it is a metal bellows with a spigot-type threaded connection structure, which includes a spigot-type threaded joint assembly 505', a bellows 503', a retaining ring 502', and a PVC coating layer 504'. The spigot-type thread assembly 505' consists of a spigot thread 5052' and a welding pipe 5051'. The bellows 503' is coated with a PVC coating layer 504' and 2-3 waves are reserved at both ends. The retaining ring 502' is inserted into the two ends before welding, and the ring waves at the end of the bellows are butt-welded to the welding pipe 5051'.

[0052] Practice shows that the above-mentioned metal hose joint protection welding device for stoves in this embodiment has the following advantages:

[0053] 1. The double-station joint shielded welding process is used for metal bellows welding, which integrates multiple processes such as shielded welding, rapid clamping and feeding, and automatic positioning. The two joint component structures can be quickly replaced with metal hose tooling for stoves, which effectively improves the welding quality and positioning accuracy. Compared with the traditional welding process, the shielded welding device provides precise automatic positioning technology, welding process atmosphere protection atmosphere and joint component rapid feeding mechanism, which solves the problems of poor weld quality, high degree of oxidation, difficult welding gun positioning and low welding efficiency in traditional welding.

[0054] 2. Relying on the ventilation interface mechanism, the functions of active gas filling protection during welding, rapid cooling of welding, and automatic gas shut-off after welding can be realized. Cheap protective gases such as nitrogen can be used to reduce the cost of protective gas, while ensuring the quality of product welding appearance.

[0055] 3. The specially designed closed cavity unit has real-time observation of the welding process. The welding gun inlet is sealed with flexible silicone rubber. The membrane valve structure is used for the tube inlet to solve the feeding and sealing problems of large joint nuts and small tubes. The minimized cavity design is adopted to achieve the minimum leakage of shielding gas and maximum shielding welding during the welding process.

[0056] 4. The welding gun telescopic positioning unit can realize precise automatic positioning of the welding point, solving the problems of poor manual positioning accuracy and low welding efficiency. At the same time, a unique post-welding dwell time control is set, that is, the gun will not be lifted if the post-welding protection time is insufficient, which effectively improves the welding quality.

[0057] 5. The closed cavity welding protection mechanism design can minimize the damage to the human body caused by the leakage of argon arc welding arc. At the same time, the closed cavity is equipped with a welding observation port to conveniently observe the welding process. The closed cavity can also effectively collect the dust generated during the welding process to reduce the hazard of dust inhalation by operators.

[0058] In addition to the above embodiments, the present invention may also have other implementations. For example, the fixed structure of the sealed chamber fixed on the two end vertical brackets can also be replaced by fixing the fixed end cover directly on the output housing of the reducer or other fixed positions, etc. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A metal hose automatic welding equipment, characterized by: It comprises a closed cavity unit (3) arranged on a workbench (4), a welding gun positioning unit (6), an automatic blanking unit (7) and a positioning rotation unit (8); The automatic blanking unit (7) is located above the positioning and rotating unit (8); the closed cavity unit (3) is located at one end of the positioning and rotating unit (8); and the welding gun positioning unit (6) is located at one side of the positioning and rotating unit (8); The automatic blanking unit comprises a material box (705) having at least two rows of vertical joint assembly channels, the first row of joint assembly channels extending downward to a discharge channel at a discharge port (701), and the lower ends of the rear row of joint assembly channels leading to the discharge channel via a downward-inclined slideway; an electromagnetic horizontal opening and closing mechanism (702) is installed above the discharge port, and an electromagnetic downward-inclined opening and closing mechanism (703) is installed on the front side of the downward-inclined slideway at the lower end of the rear row of joint assembly channels; The positioning and rotating unit comprises a box body (802) supporting a horizontal rotation drive mechanism, the output end of the rotation drive mechanism is transmission-connected to a centering core rod (8011) facing the discharge port, and has a positioning sleeve (8012) for circumferentially constraining the rear joint assembly in place; The two ends of the hollow sealed chamber (305) of the sealed chamber unit are respectively provided with a fixed end cover (302) and an insertion end cover (310); one side is provided with a welding observation port (304) and the upper part is provided with a welding gun insertion hole; A centering core rod (8011) is inserted into the fixed end cover, and the outer circle of the centering core rod matches the diameter of the metal bellows; The central perforation of the insertion end cover is provided with a membrane flap rubber sealing pad (309), the membrane flap rubber sealing pad is composed of a group of rubber sheets with fixed outer ends and elastically closed inner ends; The welding gun positioning unit is located below the downward inclined slide of the automatic blanking unit, and includes a fixed base supporting a lateral adjustment mechanism, a longitudinal adjustment mechanism is mounted on the lateral adjustment mechanism, a rotation adjustment mechanism with a horizontal axis is hinged on the longitudinal adjustment mechanism, the rotation adjustment mechanism is equipped with an up and down adjustment mechanism, the up and down adjustment mechanism is equipped with a linear drive mechanism, and a welding gun clamp for clamping the welding gun is mounted on the protruding end of the linear drive mechanism.

2. The metal hose automatic welding equipment according to claim 1 is characterized in that: The membrane valve rubber sealing gasket is composed of a group of trapezoidal rubber sheets with long sides as outer ends fixed to the central perforated circle of the insertion end cover and short sides as inner ends elastically closed. The adjacent waists of each trapezoidal rubber sheet are mutually matched, and the short sides of each trapezoidal rubber sheet form a positioning slider insertion hole with a closed diameter matching the positioning core rod.

3. The metal hose automatic welding equipment according to claim 1 or 2, characterized in that: The centering core rod is tightly fitted with a positioning sleeve having end face teeth, and one end of the joint assembly corresponding to the positioning sleeve is provided with an engaging boss matched with the end face teeth.

4. The metal hose automatic welding equipment according to claim 3 is characterized in that: The horizontal rotation drive mechanism is composed of a servo motor and a reducer. The inner conical flange at the output end of the reducer has an inner conical hole. The conical sleeve for fixing the centering core rod is tightly inserted into the inner conical hole through its outer conical handle to form a transmission connection with the centering core rod facing the discharge port.

5. The metal hose automatic welding equipment according to claim 4 is characterized in that: 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 has a vertical joint component channel separated by multiple rows of guide rails.

6. The metal hose automatic welding equipment according to claim 5 is characterized in that: The upper part of the closed cavity unit is fixed with a welding gun sealing gasket by means of a strong magnetic block, and the middle part of the welding gun sealing gasket is provided with a welding gun insertion hole.

7. The metal hose automatic welding equipment according to claim 6 is characterized in that: The front side of the hollow sealed chamber is provided with a welding observation port for inserting an arc light filtering eyepiece.

8. The metal hose automatic welding equipment according to claim 7 is characterized in that: A saddle screw is arranged between the outer tapered handle and the inner tapered hole.

9. The metal hose automatic welding equipment according to claim 8, characterized in that: The workbench is arranged in a double-station symmetrical structure.

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