Metal rod welding device for fitness equipment production

Abstract

The invention relates to the field of arc welding equipment, in particular to a metal rod welding device for fitness equipment production, which comprises a tungsten electrode welding needle and further comprises a reducing sleeve fixedly sleeved with a clamping body of the tungsten electrode welding needle, the large-diameter end of the reducing sleeve points to the tungsten electrode welding needle, and the large-diameter end of the reducing sleeve is connected with the clamping body of the tungsten electrode welding needle. A first streamline lip is arranged on the outer wall of the large-diameter end of the variable-diameter sleeve, a short pipe is connected to the portion, located outside the first lip, of the variable-diameter sleeve in a sleeved mode, a flow guide pipe is connected between the first lip and the tungsten electrode welding needle in a sleeved mode, and a flow guide cover is fixedly connected to the outer portion of the short pipe in a sleeved mode. According to the device, the argon flow multiplication effect is achieved at the tungsten electrode welding needle through the short pipe, the reducer pipe and the flow guide pipe, part of argon flows back at the tungsten electrode welding needle through the flow guide cover and the flow guide pipe to participate in the argon flow multiplication process to form circulation, and therefore high-strength long-time argon arc welding construction with small flow of argon is achieved; the problem that the argon use cost is high due to the fact that argon is used for one time in argon arc welding is effectively solved.

Description

Technical Field

[0001] The invention relates to the field of arc welding equipment, in particular to a metal rod welding device for producing fitness equipment. Background Art

[0002] Argon arc welding uses high-voltage discharge between the tungsten electrode welding needle and the material being welded, using the high heat of the arc to melt the welding material and the base material. In order to avoid oxidation at the weld, a nozzle connected to argon gas is also connected to the outside of the tungsten electrode welding needle. While welding, argon gas is sprayed to cover the welding area to isolate the air and prevent oxidation.

[0003] A large number of argon arc welding equipment used on the market use argon gas once, and the argon gas dissipates directly into the air after being sprayed out. In order to ensure the welding quality of argon arc welding, a large amount of argon gas has to be sprayed, which leads to a high cost of using argon gas. In order to solve the above problem, the present invention proposes a metal rod welding device for fitness equipment production, which can greatly save the use of argon gas. Summary of the invention

[0004] In view of the fact that the argon gas is used once in argon arc welding as mentioned above or in the prior art, resulting in a high cost of using argon gas, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a metal rod welding device for producing fitness equipment.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a metal rod welding device for fitness equipment production, comprising a tungsten electrode welding needle, and also comprising a reducing sleeve fixedly sleeved with a clamping body of the tungsten electrode welding needle, the large diameter end of the reducing sleeve points to the tungsten electrode welding needle, and the outer wall of the large diameter end of the reducing sleeve is provided with a streamlined lip 1, a short tube is sleeved on the outer portion of the reducing sleeve located outside the lip 1, and a guide tube is sleeved between the lip 1 and the tungsten electrode welding needle, a guide cover is fixedly sleeved on the outside of the short tube, and the guide cover opening is downwardly sleeved with the guide tube.

[0007] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, a spoiler ring is fixedly sleeved in the annular gap between the outer walls of the large diameter section of the short tube and the reducer, and the outer wall of the spoiler ring is fixedly sleeved with the inner wall of the short tube.

[0008] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, the lip 1 is arranged in a ring shape around the outer wall of the reducer, and the convex peak of the lip 1 is located on the side of the lip close to the short tube.

[0009] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, the opening position of one end of the guide tube away from the tungsten electrode welding needle is located at the arc convex peak position of lip one, and the annular gap distance between the guide tube and lip one is greater than the annular gap distance between the short tube and the reducer.

[0010] As a preferred solution of the metal rod welding device for producing fitness equipment of the present invention, the diameters of the two ends of the flow guide tube are larger than the diameter in the middle, and the diameter change of the flow guide tube is smoothly arranged.

[0011] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, wherein: the guide tube is provided with a lip 2 at one end of the tungsten electrode welding needle, and the cross-sectional profile of the lip 2 is in a water drop shape.

[0012] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, the opening position of the air deflector is set at two lips, and the opening edge of the air deflector is folded inward to provide a rib, and the cross-sectional profile of the rib is "J" shaped.

[0013] As a preferred solution of the metal rod welding device for producing fitness equipment of the present invention, the diameter of the end of the air guide cover away from the opening is larger than the diameter of the opening.

[0014] As a preferred solution of the metal rod welding device for producing fitness equipment of the present invention, the inner wall of the spoiler ring and the inner and outer walls of the guide tube are all provided with elastic metal sheets in a circular array, and the inner wall of the spoiler ring is fixedly connected to the outer wall of the reducer through the elastic metal sheet, and the guide tube is fixedly connected to the inner wall of the guide cover and the outer wall of the clamping body of the tungsten electrode welding needle through the elastic metal sheet.

[0015] As a preferred solution of the metal rod welding device for fitness equipment production of the present invention, one end of the short tube away from the tungsten electrode welding needle is connected to the argon gas supply pipe of the argon arc welding machine.

[0016] The beneficial effects of the metal rod welding device for fitness equipment production of the present invention are as follows: the device forms an argon gas flow multiplication effect at the tungsten electrode welding needle through a short tube, a reducer and a guide tube, and refluxes part of the argon gas at the tungsten electrode welding needle through the guide cover and the guide tube to make it participate in the argon gas flow multiplication process to form a cycle, thereby realizing high-intensity and long-term argon arc welding construction with a small flow of argon, effectively solving the problem of high argon use cost caused by the one-time use of argon gas in argon arc welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the structure of the metal rod welding device used in the production of fitness equipment (oblique upward perspective).

[0019] Figure 2 for Figure 1 Cross-sectional view after cutting through the shell structure.

[0020] Figure 3 for Figure 2 A cross-sectional view after further cutting through the internal structure.

[0021] Figure 4 for Figure 1 Structural anatomy diagram.

[0022] In the figure: 100, tungsten electrode welding needle; 200, reducing sleeve; 201, short tube; 202, guide tube; 203, guide cover; 204, spoiler ring; 205, elastic metal sheet; 200a, lip 1; 202a, lip 2; 203a, retaining edge. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] Example, see Figure 1~Figure 4 This embodiment provides a metal rod welding device for fitness equipment production, which can gather the ejected argon gas around the tungsten electrode welding needle 100 through a series of fluid diversion designs, so that a small amount of ejected argon gas can meet the welding protection requirements of argon arc welding, thereby achieving a significant saving of argon gas. Figure 1 and Figure 4 It includes a tungsten electrode welding needle 100, and also includes a reducing sleeve 200 fixedly sleeved with the clamping body of the tungsten electrode welding needle 100, the large diameter end of the reducing sleeve 200 points to the tungsten electrode welding needle 100, and the outer wall of the large diameter end of the reducing sleeve 200 is provided with a streamlined lip 200a, the outer portion of the reducing sleeve 200 located outside the lip 200a is connected with a short tube 201 (the end of the short tube 201 away from the tungsten electrode welding needle 100 is connected to the argon gas supply pipe of the argon arc welding machine), and a guide tube 202 is sleeved between the lip 200a and the tungsten electrode welding needle 100, and a guide cover 203 is fixedly sleeved outside the short tube 201, and the guide cover 203 opens downward to sleeve the guide tube 202.

[0025] Specifically, refer to Figure 2 A spoiler ring 204 is fixedly sleeved in the annular gap between the short tube 201 and the outer wall of the large diameter section of the reducer, the outer wall of the spoiler ring 204 is fixedly sleeved with the inner wall of the short tube 201, the inner wall of the spoiler ring 204 and the inner and outer walls of the guide tube 202 are all provided with elastic metal sheets 205 in a circular array, and the inner wall of the spoiler ring 204 is fixedly connected to the outer wall of the reducer through the elastic metal sheet 205, and the guide tube 202 is fixedly connected to the inner wall of the guide cover 203 and the outer wall of the clamping body of the tungsten electrode welding needle 100 through the elastic metal sheet 205.

[0026] refer to Figure 2 and Figure 3 The lip 200a is arranged in a ring shape around the outer wall of the reducer, and the peak position of the arc convex of the lip 200a is located on the side of the lip close to the short tube 201, the opening position of one end of the guide tube 202 away from the tungsten electrode welding needle 100 is located at the peak position of the arc convex of the lip 200a, and the annular gap distance between the guide tube 202 and the lip 200a is greater than the annular gap distance between the short tube 201 and the reducer, the diameters of the two ends of the guide tube 202 are greater than the diameter in the middle, and the diameter change of the guide tube 202 is smoothly arranged.

[0027] refer to Figure 3 The guide tube 202 is located at one end of the tungsten electrode welding needle 100 and is provided with a lip 202a, the cross-sectional profile of the lip 202a is in a water drop shape, the opening position of the guide cover 203 is set at the lip 202a, and the opening edge of the guide cover 203 is folded inward to provide a rib 203a, the cross-sectional profile of the rib 203a is in a "J" shape, and the diameter of the end of the guide cover 203 away from its opening is larger than its opening diameter.

[0028] The present invention provides a metal rod welding device for fitness equipment production, and in particular provides a mechanism for saving argon gas on argon arc welding equipment. The mechanism mainly involves two parts: First, a small amount of argon is ejected at high speed through the annular nozzle. The ejected argon has a tendency to diffuse after a short distance. The argon jet has a viscosity and a driving effect on the surrounding gas, which drives more surrounding gas to move in the direction of the argon jet, and finally achieves the effect of doubling the gas volume. In terms of structure, Figure 3As shown, the argon gas provided by the argon arc welding machine enters between the short tube 201 and the reducer through the pipeline, and then is ejected toward the tungsten electrode welding needle 100 from the annular gap between the short tube 201 and the reducer. In addition to the effect of increasing the flow rate of the argon gas injection by the annular narrow opening, the argon gas jet will also flow through the surface of the lip 200a immediately afterwards. The wall attachment effect will cause the argon gas jet to flow closely to the convex surface of the lip 200a. Due to the change in the cross-sectional area of ​​the flow tube when the gas flows through the convex surface and the continuity principle, the argon gas jet increases the flow rate again. The small stream of argon gas flowing at a high speed greatly enhances the driving effect of the surrounding gas due to the viscosity. After the small stream of argon gas jet leaves the lip 200a, it will increase the driving effect on the gas in front due to diffusion, thereby producing a better gas flow multiplication effect. Therefore, only a small argon gas flow rate is needed to drive a large amount of gas flow near the tungsten electrode welding needle 100. Secondly, according to the principle and effect of airflow multiplication in "Part 1", it is obvious that we only need to replace the extra multiplied airflow with argon, refer to Figure 3 , the airflow ejected from the second lip 202a, after being blocked and refracted by the object to be welded, most of it will flow to the periphery of the lip, and due to the multiplication effect between the guide tube 202 and the lip 1 200a, the gas between the guide cover 203 and the short tube 201 is sucked into the guide tube 202 in large quantities, thereby forming a negative pressure in the guide cover 203, and the negative pressure will generate suction on the gas flowing through between the opening of the guide cover 203 and the second lip 202a, and most of the gas blown out from the second lip 202a will be recovered into the guide cover 203, and participate in the gas multiplication process again. Obviously, this forms a gas circulation at the tungsten electrode welding needle 100. Therefore, it is only necessary to spray argon for a short time before welding, and through a period of gas circulation and partial gas escape, the air in the guide cover 203 can be discharged, and long-term, small-flow argon arc welding construction can be carried out, which is very suitable for continuous high-intensity and long-term operation of factory automated argon arc welding robots, and brings significant argon gas saving effect.

[0029] Other details of the present invention are as follows: First, if Figure 2 As shown, the guide cover 203 and the guide tube 202 of the present invention, as well as the short tube 201 and the reducer, are connected by twisting the elastic metal sheet 205. This connection method has two main purposes: first, the elastic metal sheet 205 is used to rectify the argon gas flow, stabilize the flow direction of the argon gas flow, and reduce the flow resistance caused by turbulence and eddy currents; second, when the welding head part accidentally knocks against the workpiece during the welding process, the flexible connection structure of the elastic metal sheet 205 can minimize the damage to the workpiece and the equipment caused by the knock; Second, if Figure 3As shown, the top diameter of the flow guide cover 203 is significantly larger than the opening diameter thereof, in order to increase the internal space of the flow guide cover 203, so as to allow the reflux argon gas drawn into the flow guide cover 203 to diffuse and decelerate, thereby reducing the difficulty of the reflux argon gas flowing in the opposite direction, that is, into the flow guide tube 202; Third, if Figure 3 As shown, the water drop cross-section shape of the lip 202a is intended to reduce the flow resistance of the argon bypassing the mouth of the guide tube 202 when it refluxes, while the retaining edge 203a at the edge of the guide cover 203 has a completely opposite function, which is to increase the flow resistance of the gas outside the guide cover 203 entering the inside of the guide cover 203, so that the amount of argon escaping to the periphery of the guide cover 203 is higher than the amount of argon entering the inside of the guide cover 203 from the edge of the guide cover 203, thereby avoiding excessive air intake outside the guide cover 203 causing air to mix into the device.

[0030] In summary, the device forms an argon gas flow multiplication effect at the tungsten electrode welding needle 100 through the short tube 201, the reducer and the guide tube 202, and refluxes part of the argon gas at the tungsten electrode welding needle 100 through the guide cover 203 and the guide tube 202 to make it participate in the argon gas flow multiplication process to form a cycle, thereby realizing high-intensity and long-term argon arc welding construction with a small flow of argon, and effectively solving the problem of high argon use cost caused by the one-time use of argon gas in argon arc welding.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A metal rod welding device for producing fitness equipment, comprising a tungsten electrode welding needle (100), characterized in that: It also comprises a reducing sleeve (200) fixedly sleeved with the clamping body of the tungsten electrode welding needle (100), the large diameter end of the reducing sleeve (200) pointing towards the tungsten electrode welding needle (100), and the outer wall of the large diameter end of the reducing sleeve (200) is provided with a streamlined lip 1 (200a), the outer portion of the reducing sleeve (200) located outside the lip 1 (200a) is sleeved with a short tube (201), and a flow guide tube (202) is sleeved between the lip 1 (200a) and the tungsten electrode welding needle (100), and the short tube (201) is fixedly sleeved with a flow guide cover (203), and the opening of the flow guide cover (203) sleeves the flow guide tube (202) downward.

2. The metal rod welding device for fitness equipment production as claimed in claim 1, characterized in that: A spoiler ring (204) is fixedly sleeved in the annular gap between the short tube (201) and the outer wall of the large diameter section of the reducer, and the outer wall of the spoiler ring (204) is fixedly sleeved with the inner wall of the short tube (201).

3. The metal rod welding device for fitness equipment production according to claim 1, characterized in that: The lip opening 1 (200a) is arranged in a ring shape around the outer wall of the reducer, and the convex peak position of the lip opening 1 (200a) is located on the side of the lip opening close to the short tube (201).

4. The metal rod welding device for fitness equipment production as claimed in claim 3, characterized in that: The opening position of one end of the guide tube (202) away from the tungsten electrode welding needle (100) is located at the arc convex peak position of the lip opening 1 (200a), and the distance of the annular gap between the guide tube (202) and the lip opening 1 (200a) is greater than the distance of the annular gap between the short tube (201) and the reducer.

5. The metal rod welding device for fitness equipment production as claimed in claim 4, characterized in that: The diameters at both ends of the flow guide tube (202) are larger than the diameter in the middle, and the diameter of the flow guide tube (202) changes smoothly.

6. The metal rod welding device for fitness equipment production according to claim 1, characterized in that: The guide tube (202) is provided with a second lip (202a) at one end of the tungsten electrode welding needle (100), and the cross-sectional profile of the second lip (202a) is in a water drop shape.

7. The metal rod welding device for fitness equipment production according to claim 6, characterized in that: The opening position of the air guide cover (203) is arranged at the second lip (202a), and the opening edge of the air guide cover (203) is folded inwards to form a retaining edge (203a), and the cross-sectional profile of the retaining edge (203a) is in a "J" shape.

8. The metal rod welding device for fitness equipment production as claimed in claim 1, characterized in that: The diameter of an end of the air guide cover (203) away from its opening is larger than the diameter of its opening.

9. The metal rod welding device for fitness equipment production as claimed in claim 2, characterized in that: The inner wall of the spoiler ring (204) and the inner wall and outer wall of the guide tube (202) are all provided with elastic metal sheets (205) in a ring array, and the inner wall of the spoiler ring (204) is fixedly connected to the outer wall of the reducer tube via the elastic metal sheet (205), and the guide tube (202) is fixedly connected to the inner wall of the guide cover (203) and the outer wall of the clamping body of the tungsten electrode welding needle (100) via the elastic metal sheet (205).

10. The metal rod welding device for fitness equipment production according to claim 1, characterized in that: One end of the short tube (201) away from the tungsten electrode welding needle (100) is connected to an argon gas supply pipe of an argon arc welding machine.

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