CN117086437A

CN117086437A - Small welding torch

Info

Publication number: CN117086437A
Application number: CN202311100154.3A
Authority: CN
Inventors: 童芬波; 陈一; 徐祖灵
Original assignee: Ningbo Longxing Welding Cutting Technology Stock Co ltd
Current assignee: Ningbo Longxing Welding Cutting Technology Stock Co ltd
Priority date: 2023-08-29
Filing date: 2023-08-29
Publication date: 2023-11-21

Abstract

The application provides a small welding torch, which belongs to the technical field of welding equipment and comprises a handle, wherein an oxygen pipe and a gas pipe are arranged in the handle, one end of the handle is provided with a mixing pipeline, one end of the mixing pipeline is respectively communicated with the oxygen pipe and the gas pipe, the other end of the mixing pipeline is communicated with an ejection pipeline, the ejection end of the ejection pipeline is fixedly provided with an insert, a through air outlet hole is arranged in the insert and is communicated with the ejection pipeline, and the diameter of the smallest end of the air outlet hole is smaller than the diameter of the inner wall of the ejection pipeline; the advantage is that when oxygen and gas are mixed through the mixing pipeline and then are sprayed out of the spraying pipeline, the mixed gas can be sprayed out through the inserts with smaller diameters, so that the diameter of the sprayed mixed gas is smaller, and the accurate welding of small-sized objects (such as jewelry) is realized.

Description

Small welding torch

Technical Field

The application belongs to the technical field of welding equipment, and particularly relates to a small welding torch.

Background

The welding torch is a part for executing welding operation in the welding process, is a tool for gas welding, has a nozzle at the front end, sprays high-temperature flame as a heat source, and has flexible use, convenience, rapidness and simple process; the welding torch can be used in the welding processing of factories, in the production processing process of some jewelry, the jewelry is also required to be connected and fixed or hot-melted through the welding torch, and when the existing jewelry processing welding torch is used, the mixed gas in the welding torch is generally directly sprayed out after passing through a nozzle, and is limited by materials, the diameter of a spraying channel in the nozzle cannot be very small, so that the flame sprayed out of the welding torch is wider, and the welding torch is not very convenient for relatively fine welding operation on some small jewelry.

Disclosure of Invention

The present application has been made in view of the above problems occurring in the prior art, and an object of the present application is to provide a welding torch capable of spraying a finer flame.

The aim of the application can be achieved by the following technical scheme: the utility model provides a small-size welding torch, includes the handle, be provided with oxygen pipe and gas pipe in the handle, the wherein one end of handle is provided with mixing pipeline, mixing pipeline's wherein one end respectively with the oxygen pipe the gas pipe is linked together, mixing pipeline's the other end intercommunication has the blowout pipeline, just the fixed inserts that are provided with of blowout pipeline's blowout end, be provided with in the inserts the venthole that link up with the blowout pipeline is linked together, just the minimum end diameter of venthole is less than the inner wall diameter of blowout pipeline.

In the small welding torch, the insert is made of agate or hard alloy.

In the small welding torch, the oxygen valve rod and the gas valve rod are movably arranged in the handle, the oxygen valve rod can extend into the oxygen pipe, the extending distance of the oxygen valve rod in the oxygen pipe is adjustable, the gas valve rod can extend into the gas pipe, the extending distance of the gas valve rod in the gas pipe is adjustable, and the gas valve rod and the outer end of the oxygen valve rod are fixedly provided with the adjusting hand wheels.

In the small welding torch, the handle is further provided with the sealing nut in a screwed manner, the screw-connection end of the sealing nut is provided with the sealing cavity, the sealing cavity is internally provided with the sealing gasket, the sealing gasket is integrally provided with the connecting part, the sealing nut is screwed in towards the direction of the handle until the sealing nut abuts against the connecting part and extrudes the connecting part, one end of the oxygen valve rod penetrates through the sealing gasket to extend into the oxygen pipe, the oxygen valve rod is in screw connection with the sealing nut, and the regulating hand wheel is fixed at the other end of the oxygen valve rod.

In the small welding torch, one end of the sealing pad, which is close to the handle, is provided with the air storage groove, the air storage groove is communicated with the oxygen pipe, and when the sealing pad is arranged in the handle, an air storage space is formed between the air storage groove and the handle.

In the small welding torch, a threaded portion is fixedly arranged at the end portion of the adjusting hand wheel, and the threaded portion is in threaded connection with the outer surface of the sealing nut.

In the small welding torch, the handle is hollow, a positioning clamping plate is fixedly arranged in the handle, two positioning holes are formed in the positioning clamping plate, an opening is formed in one end of the handle, the oxygen pipe and the gas pipe penetrate through the opening to extend into the handle, and the oxygen pipe and the gas pipe respectively penetrate through the positioning holes in the positioning clamping plate.

In the small welding torch, the positioning clamping plate comprises a positioning portion and a clamping portion, the clamping portion is integrally arranged on the periphery of the positioning portion, the positioning hole is formed in the positioning portion, a gap is formed between the positioning portion and the inner wall of the handle, and the clamping portion and the inner wall of the handle are abutted to each other to be fixed.

In the small welding torch, the small welding torch further comprises an upper connecting rod, the insert and the spraying pipeline are all arranged in the upper connecting rod, the outer sleeve of the upper connecting rod can be in threaded connection with the connecting nut of the mixing pipeline, a connecting piece is further arranged between the upper connecting rod and the mixing pipeline, the connecting piece is sleeved outside the upper connecting rod, after the connecting nut is in threaded connection with the mixing pipeline, the connecting nut is matched with the mixing pipeline to extrude the connecting piece, and after the connecting piece is deformed, the upper connecting rod is clamped and fixed.

In the small welding torch, the connecting piece comprises a fixing portion, a through connecting hole is formed in the fixing portion, the diameter of the connecting hole is larger than the diameter of the outer wall of the upper connecting rod, the two ends of the fixing portion are provided with the frustum, the end portion of the mixing pipe is provided with a first abutting portion, the end portion of the connecting nut is provided with a second abutting portion, and after the connecting nut is in threaded connection with the mixing pipe, the first abutting portion and the second abutting portion are respectively abutted to the frustum at the two ends of the fixing portion.

Compared with the prior art, the application has the beneficial effects that:

(1) When oxygen and fuel gas are mixed through the mixing pipeline and then sprayed out of the spraying pipeline, the mixed gas can be sprayed out through the insert with smaller diameter, so that the diameter of the sprayed mixed gas is smaller, and the accurate welding of small-sized objects (such as jewelry) is realized;

(2) Compared with the direct communication of the oxygen pipe and the mixing pipeline, the air storage space is additionally arranged, so that the stability of the air supply flow can be ensured;

(3) And the arrangement of the air storage groove can also reduce the contact between the sealing gasket and the inner wall of the valve rod, and reduce the relative friction between the valve rod and the sealing gasket 112 on the premise of ensuring the tightness.

Drawings

FIG. 1 is a schematic diagram of the structure of the present application;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at A;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at C in FIG. 1;

FIG. 5 is a schematic cross-sectional view at A-A of FIG. 1;

fig. 6 is a schematic cross-sectional view of the handle.

In the figure, a handle 100; an oxygen pipe 101; a gas pipe 102; a mixing pipe 103; an ejection duct 104; an insert 105; a transition aperture 106; an oxygen valve stem 107; a gas valve stem 108; an adjusting hand wheel 109; a seal nut 110; a seal groove 111; a gasket 112; a connection portion 113; a gas storage tank 114; a screw portion 115; a positioning card 116; a positioning hole 117; a positioning portion 118; a clamping portion 119; an air outlet hole 121; an upper link 122; a coupling nut 123; a fixing portion 124; a frustum 125; a first abutting portion 126; a second abutting portion 127; a securing ring 128.

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1-6, a small welding torch comprises a handle 100, an oxygen pipe 101 and a gas pipe 102 are arranged in the handle 100, a mixing pipeline 103 is arranged at one end of the handle 100, one end of the mixing pipeline 103 is respectively communicated with the oxygen pipe 101 and the gas pipe 102, the other end of the mixing pipeline 103 is communicated with a spraying pipeline 104, an insert 105 is fixedly arranged at the spraying end of the spraying pipeline 104, a through gas outlet hole 121 is arranged in the insert 105 and is communicated with the spraying pipeline 104, and the diameter of the smallest end of the gas outlet hole 121 is smaller than the diameter of the inner wall of the spraying pipeline 104.

In this embodiment, the insert 105 is disposed at the spraying end of the spraying pipe 104, and the diameter of the smallest end of the air outlet hole 121 in the insert 105 is smaller than the diameter of the spraying pipe 104, so when oxygen and gas are mixed by the mixing pipe and sprayed by the spraying pipe 104, the mixed gas is sprayed by the insert 105 with smaller diameter, so that the diameter of the sprayed mixed gas is smaller, and accurate welding of small objects (such as jewelry) is realized.

Preferably, the insert 105 is made of agate or cemented carbide.

In this embodiment, since the diameter of the air outlet hole 121 is smaller, in order to ensure the processing accuracy and the service life of the insert 105, a material such as agate or cemented carbide that is resistant to high temperature and is hard is used.

It should be noted that the spraying end of the spraying pipe 104 is provided with a mounting groove, the insert 105 is fixed in the mounting groove, and the end of the air outlet hole 121 in the insert 105 is provided with a transition hole 106, and the diameter of the transition hole 106 is the same as the pipe wall diameter of the spraying pipe 104.

Further preferably, an oxygen valve rod 107 and a gas valve rod 108 are movably arranged in the handle 100, the oxygen valve rod 107 can extend into the oxygen pipe 101, the extending distance of the oxygen valve rod 107 in the oxygen pipe 101 is adjustable, the gas valve rod 108 can extend into the gas pipe 102, the extending distance of the gas valve rod 108 in the gas pipe 102 is adjustable, and adjusting handwheels 109 are fixedly arranged at the outer ends of the gas valve rod 108 and the oxygen valve rod 107.

In this embodiment, by rotating the corresponding adjusting handwheels 109, the deep distance of the oxygen valve rod 107 in the oxygen pipe 101 or the deep distance of the gas valve rod 108 in the gas pipe 102 can be adjusted, so as to adjust the output of oxygen and gas.

Preferably, the handle 100 is further provided with a sealing nut 110 in a screwed manner, a sealing groove 111 is formed in the screwed end of the sealing nut 110, a sealing gasket 112 is arranged in the sealing groove 111, a connecting portion 113 is integrally arranged on the sealing gasket 112, the sealing nut 110 is screwed in the direction of the handle 100 until the sealing nut 110 abuts against the connecting portion 113, the connecting portion 113 is extruded, one end of the oxygen valve rod 107 penetrates through the sealing gasket 112 and extends into the oxygen tube 101, the oxygen valve rod 107 is in screwed connection with the sealing nut 110, and the regulating hand wheel 109 is fixed at the other end of the oxygen valve rod 107.

It should be noted that, the bottom wall of the sealing groove 111 and one end of the gasket 112 are tapered, and the connecting portion 113 includes a connecting ring disposed at an end of the gasket 112.

In this embodiment, the sealing nut 110 is screwed into the handle 100 to be matched with the handle 100 to squeeze the connecting part 113 on the sealing pad 112, so that the connecting part between the sealing nut 110 and the handle 100 can be sealed; and because the bottom wall of the seal groove 111 is conical, during the screwing process of the seal nut 110, the seal nut 110 can also press the seal gasket 112 to deform inwards to approach, press and seal with the oxygen valve rod 107, and seal the joint between the valve rod and the seal nut 110.

In the present application, the structure between the gas valve stem 108 and the adjusting hand wheel 109 is identical to the structure between the oxygen valve stem 107 and the adjusting hand wheel 109, and will not be described here.

Further preferably, an air storage groove 114 is formed at one end of the sealing pad 112, which is close to the handle 100, the air storage groove 114 is communicated with the oxygen pipe 101, and when the sealing pad 112 is installed in the handle, an air storage space is formed between the air storage groove 114 and the handle 100.

In this embodiment, taking oxygen delivery as an example, when the adjusting hand wheel 109 is opened, oxygen passes through the oxygen pipe 101 and then enters the air storage space, when a certain amount of oxygen is stored in the air storage space, the oxygen enters the mixing pipeline 103 and is then sprayed out through the spraying pipeline, compared with the direct communication between the oxygen pipe 101 and the mixing pipeline 103, the air storage space is additionally arranged to ensure the stability of the air supply flow; and the arrangement of the air storage groove 114 can also reduce the contact between the sealing gasket 112 and the valve rod, and reduce the relative friction between the valve rod and the sealing gasket 112 on the premise of ensuring the tightness.

Further preferably, the end of the adjusting hand wheel 109 is fixedly provided with a threaded portion 115, and the threaded portion 115 is in threaded connection with the outer surface of the seal nut 110.

In this embodiment, taking the oxygen valve rod 107 as an example, the oxygen valve rod 107 passes through the sealing nut 110 and then extends into the handle 100, and the oxygen valve rod 107 is in threaded connection with the sealing nut 110, so that the deep distance of the oxygen valve rod 107 in the oxygen tube 101 can be adjusted by rotating the adjusting hand wheel 109, namely the air outlet amount of the oxygen tube 101 is adjusted, the connection between the oxygen valve rod 107 and the sealing nut 110 can be reinforced by the secondary threaded connection between the adjusting hand wheel 109 and the sealing nut 110, and in a normal state, the threaded connection between the adjusting hand wheel 109 and the sealing nut 110 and the threaded connection between the oxygen valve rod 107 and the sealing nut 110 can be ensured, the adjusting hand wheel 109 can not shake to influence the air outlet amount of oxygen in the using process of the welding torch, and the oxygen valve is more stable; at the same time, the control of the oxygen valve lever 107 is also made more accurate.

Further preferably, the inside of the handle 100 is of a hollow structure, a positioning clamping plate 116 is fixedly arranged in the handle 100, two positioning holes 117 are formed in the positioning clamping plate 116, an opening is formed in one end of the handle 100, the oxygen pipe 101 and the gas pipe 102 penetrate through the opening to extend into the handle 100, and the oxygen pipe 101 and the gas pipe 102 respectively penetrate through the positioning holes 117 in the positioning clamping plate 116.

It should be noted that the length direction of the positioning clamping plate 116 is perpendicular to the length direction of the handle 100, so that the positioning clamping plate 116 can be clamped in the handle 100.

In this embodiment, the interior of the handle 100 is a hollow structure, so that the overall weight of the handle 100 can be reduced, and in order to ensure the installation stability of the oxygen pipe 101 and the gas pipe 102 in the handle 100, a positioning clamping plate 116 is arranged to be clamped in the handle 100, so as to support and position the oxygen pipe 101 and the gas pipe 102, and ensure the stability of the installation positions of the oxygen pipe 101 and the gas pipe 102 in the handle 100.

Further preferably, the positioning clamping plate 116 includes a positioning portion 118 and a clamping portion 119, the clamping portion 119 is integrally disposed at the periphery of the positioning portion 118, the positioning hole 117 is formed in the positioning portion 118, a gap is formed between the positioning portion 118 and the inner wall of the handle 100, and the clamping portion 119 abuts against the inner wall of the handle 100 to fix.

In this embodiment, the cross section of the positioning portion 118 is elliptical, the long axis vertex of the positioning portion 118 abuts against the inner wall of the handle 100, the clamping portion 119 includes two positioning blocks symmetrically disposed on the short axis of the positioning portion 118, and when the positioning clamping plate 116 is plugged into the handle 100, the two positioning blocks and the long axis vertex of the positioning portion 118 abut against the inner wall of the handle 100, so as to define the mounting position of the positioning clamping plate 116 in the handle 100; a gap is arranged between the short shaft edge of the positioning part 118 and the inner wall of the handle 100, when the tightness test is carried out on the pipe connection, after the handle 100 is immersed in liquid, if leakage occurs at the pipe connection, leakage bubbles can be visually seen at the gap to be discharged, and the gap is arranged to enable the interior of the handle 100 to be communicated with the outside air, so that potential safety hazards caused by overlarge pressure in the handle 100 are prevented.

Still preferably, the device further comprises an upper connecting rod 122, the insert 105 and the spraying pipeline 104 are both arranged in the upper connecting rod 122, a connecting nut 123 which can be in threaded connection with the mixing pipeline 103 is sleeved outside the upper connecting rod 122, a connecting piece is further arranged between the upper connecting rod 122 and the mixing pipeline 103, the connecting piece is sleeved outside the upper connecting rod 122, after the connecting nut 123 is in threaded connection with the mixing pipeline 105, the connecting nut 123 is matched with the mixing pipeline 105 to extrude the connecting piece, and after the connecting piece is deformed, the upper connecting rod 122 is clamped and fixed.

Still preferably, the connecting piece includes a fixing portion 124, a through connecting hole is provided in the fixing portion 124, the diameter of the connecting hole is larger than the diameter of the outer wall of the upper connecting rod 122, two ends of the fixing portion are provided with a frustum 125, the end portion of the mixing pipe 103 is provided with a first abutting portion 126, the end portion of the connecting nut 123 is provided with a second abutting portion 127, and after the connecting nut 123 is in threaded connection with the mixing pipe 103, the first abutting portion 126 and the second abutting portion 127 respectively abut against the frustum 125 at two ends of the fixing portion 124.

It should be noted that, the material of the connecting piece is a deformable material, the first abutting portion 126 includes an arc-shaped transition ring formed at the end of the mixing pipe 103, when the connecting nut 123 is screwed into the mixing pipe 103, the arc-shaped transition ring abuts against the frustum 125 inside the fixing portion 124 until the connecting nut 123 is locked with the mixing pipe 103, and at this time, the arc-shaped transition ring abuts against the middle of the frustum 125; the connecting nut 123 comprises a screw connection ring and a fixing ring 128, the second abutting portion 127 comprises a conical groove arranged on the inner wall of the fixing ring 128, a transition angle is arranged at one end, far away from the screw connection ring, of the inner wall of the conical groove, the transition angle abuts against the outer frustum 125 of the fixing portion until the connecting nut 123 is locked with the mixing pipeline 103, and at the moment, the transition angle abuts against the outer end portion of the frustum 125.

In this embodiment, the fixation and sealing between the upper extension rod 122 and the mixing tube 103 is achieved by the provision of a deformable connection.

It should be noted that the description of the present application as it relates to "first", "second", "a", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.

Claims

1. The utility model provides a small-size welding torch, its characterized in that, includes the handle, be provided with oxygen pipe and gas pipe in the handle, the wherein one end of handle is provided with mixing pipeline, mixing pipeline's one end respectively with the oxygen pipe the gas pipe is linked together, mixing pipeline's the other end intercommunication has the blowout pipeline, just the fixed inserts that are provided with of blowout pipeline's blowout end, be provided with the venthole that link up in the inserts with the blowout pipeline is linked together, just the minimum end diameter of venthole is less than the inner wall diameter of blowout pipeline.

2. A miniature welding torch according to claim 1, wherein the insert is made of agate or cemented carbide.

3. The small welding torch according to claim 1, wherein an oxygen valve rod and a gas valve rod are movably arranged in the handle, the oxygen valve rod can extend into the oxygen pipe, the extending distance of the oxygen valve rod in the oxygen pipe is adjustable, the gas valve rod can extend into the gas pipe, the extending distance of the gas valve rod in the gas pipe is adjustable, and regulating handwheels are fixedly arranged at the outer ends of the gas valve rod and the oxygen valve rod.

4. A miniature welding torch according to claim 3, wherein a sealing nut is further screwed on the handle, a sealing cavity is formed at the screwed end of the sealing nut, a sealing gasket is arranged in the sealing cavity, a connecting portion is integrally arranged on the sealing gasket, the sealing nut is screwed in towards the direction of the handle until being abutted against the connecting portion, the connecting portion is extruded, one end of the oxygen valve rod penetrates through the sealing gasket to extend into the oxygen pipe, the oxygen valve rod is screwed with the sealing nut, and the adjusting hand wheel is fixed at the other end of the oxygen valve rod.

5. The miniature welding torch of claim 4, wherein said gasket has a gas storage groove at an end thereof adjacent to said handle, said gas storage groove being in communication with said oxygen tube, and wherein a gas storage space is defined between said gas storage groove and said handle when said gasket is installed in said handle.

6. The miniature welding torch of claim 4, wherein the end of the adjustment hand wheel is fixedly provided with a threaded portion that is threadably connected to the outer surface of the seal nut.

7. The small welding torch according to claim 1, wherein the handle is hollow, a positioning clamping plate is fixedly arranged in the handle, two positioning holes are formed in the positioning clamping plate, an opening is formed in one end of the handle, the oxygen pipe and the gas pipe penetrate through the opening and extend into the handle, and the oxygen pipe and the gas pipe respectively penetrate through the positioning holes in the positioning clamping plate.

8. The miniature welding torch of claim 7, wherein the positioning clamping plate comprises a positioning portion and a clamping portion, the clamping portion is integrally arranged on the periphery of the positioning portion, the positioning hole is formed in the positioning portion, a gap is formed between the positioning portion and the inner wall of the handle, and the clamping portion is abutted against the inner wall of the handle to fix the positioning portion.

9. The small welding torch according to claim 1, further comprising an upper connecting rod, wherein the insert and the spraying pipeline are both arranged in the upper connecting rod, a connecting nut is sleeved outside the upper connecting rod and can be screwed with the mixing pipeline, a connecting piece is further arranged between the upper connecting rod and the mixing pipeline, the connecting piece is sleeved outside the upper connecting rod, when the connecting nut is screwed with the mixing pipeline, the connecting nut is matched with the mixing pipeline to extrude the connecting piece, and after the connecting piece is deformed, the upper connecting rod is clamped and fixed.

10. The small welding torch according to claim 9, wherein the connecting piece comprises a fixing portion, a through connecting hole is formed in the fixing portion, the diameter of the connecting hole is larger than the diameter of the outer wall of the upper connecting rod, two ends of the fixing portion are provided with conical tables, the end portion of the mixing pipe is provided with a first abutting portion, the end portion of the connecting nut is provided with a second abutting portion, and after the connecting nut is in threaded connection with the mixing pipe, the first abutting portion and the second abutting portion are respectively abutted with the conical tables at two ends of the fixing portion.