Welding gun with waste gas recovery device

Abstract

The invention discloses a welding gun with a waste gas recovery device, and relates to the technical field of plastic welding. The welding gun with the waste gas recovery device comprises a gun barrel. The recovery device main body is arranged on the gun barrel in a sleeving manner; the air inlet is formed in the end, close to the gun barrel welding head, of the recovery device body; the air outlet is formed in the end, away from the gun barrel welding head, of the recovery device body; the recycling pipeline is arranged in the recycling device main body, one end of the recycling pipeline is communicated with the air inlet, and the other end of the recycling pipeline is communicated with the air outlet. Waste gas enters the recovery device body from the gas inlet, then enters the exhaust pipeline from the gas outlet through the recovery pipeline and finally is exhausted to the waste gas treatment device, and the recovery device body is located on the gun barrel of the welding gun all the time, so that when different welding points are welded, the position of the waste gas recovery device does not need to be adjusted, and the welding efficiency is improved. Therefore, the working efficiency of welding is improved under the condition that the waste gas recovery effect is not reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic welding, in particular to a welding gun with an exhaust gas recovery device. Background Art

[0002] Plastic welding refers to a connection method that uses heating to melt the contact surfaces of two plastic parts at the same time, thereby combining them into a whole.

[0003] Waste gas is generated during the plastic welding process, and the waste gas mainly includes volatile organic compounds (VOCs), particulate matter and other harmful substances. These waste gases not only pollute the environment, but also threaten the health of operators. Therefore, waste gas recovery and treatment of plastic welding is a necessary step. The current waste gas recovery device is mainly an exhaust hood or a gas collection hood, which is placed above the welding point and captures the waste gas generated, and then recycles it to the treatment device through a pipeline.

[0004] However, when there are multiple welding points in the product, the air inlet position of the exhaust hood or the gas collecting hood needs to be adjusted each time after welding one point and before welding the next point, which reduces the welding work efficiency. If it is not adjusted, there will be the problem of exhaust gas leakage, which will cause damage to the operator's body. Summary of the invention

[0005] In view of the defects existing in the prior art, the technical problem solved by the present invention is: how to improve the welding work efficiency while ensuring that the waste gas recovery effect is not reduced.

[0006] In order to achieve the above purpose, the present invention provides a welding gun with an exhaust gas recovery device, comprising: barrel; A recovery device body, which is mounted on the gun barrel; An air inlet is provided at one end of the recovery device body close to the barrel welding joint; An air outlet is provided at one end of the recovery device body away from the barrel welding head, and the air outlet is connected to the exhaust gas treatment device through an exhaust pipeline; The recovery pipeline is opened inside the recovery device body, one end of the recovery pipeline is connected to the air inlet, and the other end of the recovery pipeline is connected to the air outlet.

[0007] By adopting the above technical solution, during the welding process of the welding gun, the waste gas generated at the welding point is sucked into the interior of the recovery device body from the air inlet, then enters the exhaust pipeline from the air outlet through the recovery pipeline, and is finally discharged to the waste gas treatment device for waste gas treatment. Since the recovery device body is always located on the barrel of the welding gun, there is no need to adjust the position of the waste gas recovery device when welding different welding points, thereby improving the welding work efficiency while ensuring that the waste gas recovery effect is not reduced.

[0008] In one embodiment, an adsorption component is provided on the recovery pipeline to achieve preliminary adsorption of volatile organic compounds.

[0009] By adopting the above technical solution, a preliminary adsorption can be carried out in the waste gas recovery device to remove a part of the organic volatile compounds, thereby ensuring the treatment quality of the waste gas in the subsequent treatment device.

[0010] In one embodiment, the recovery pipeline surrounds the gun barrel and is arranged inside the recovery device body. The recovery pipeline includes multiple layers of surrounding pipelines, and the multiple layers of surrounding pipelines are sequentially surrounded on the gun barrel along the direction of the gun barrel axis. Two adjacent surrounding pipelines are connected, the surrounding pipeline near the air inlet is connected to the air inlet, and the surrounding pipeline near the air outlet is connected to the air outlet.

[0011] By adopting the above technical solution, the path of the recovery pipeline is increased, thereby increasing the flow path of the exhaust gas in the recovery pipeline, thereby increasing the contact time between the exhaust gas and the adsorption component, thereby improving the adsorption effect of the adsorption component.

[0012] In one embodiment, a plurality of placement grooves are opened at the top of the recovery device body, the placement grooves are opened along the axial direction of the gun barrel and pass through several layers of surrounding pipelines, the adsorption assembly includes a plurality of placement rods and activated carbon, the placement rods are inserted into the placement grooves, and the outer diameter of the placement rods is smaller than the inner diameter of the surrounding pipeline, and a plurality of first placement holes are opened on the placement rods, and the activated carbon is placed inside the first placement holes to ensure that the activated carbon is located on the path of the recovery pipeline.

[0013] By adopting the above technical solution, when the placement rod is fully inserted into the placement slot, the first placement hole on the placement rod for placing activated carbon is located exactly on the path of the surrounding pipeline, so as to adsorb the flowing exhaust gas. This design can not only determine the number of layers of the surrounding pipeline through which the placement rod passes according to the actual recovery pipeline conditions and adsorption requirements to achieve different adsorption effects, thereby improving the applicability of the welding gun, but also the placement rod can be pulled out from the top of the recovery device body and the activated carbon can be replaced regularly to ensure the adsorption effect.

[0014] In one embodiment, a first sealing member is provided between the placement groove and the placement rod.

[0015] By adopting the above technical solution, not only the sealing between the placement groove and the placement rod is ensured to prevent exhaust gas from leaking from the gap between the two, but also the fixation between the placement groove and the placement rod is achieved. When the placement rod needs to be removed, only the first seal between the two needs to be removed.

[0016] In one embodiment, a blocking net is provided at the opening of the first placement hole to ensure that the activated carbon is always located inside the first placement hole.

[0017] By adopting the above technical solution, the activated carbon is prevented from leaking out of the first placement hole. Therefore, a baffle is set at the opening of the first placement hole. The exhaust gas can enter the first placement hole and contact with the activated carbon, but the activated carbon will not come out of the first placement hole during adsorption work.

[0018] In one embodiment, the adsorption component includes a rubber strip and activated carbon. The rubber strip is laid inside the recovery pipeline along the path of the recovery pipeline, and the outer diameter of the rubber strip is smaller than the inner diameter of the recovery pipeline. A plurality of second placement holes are opened on the rubber strip, and the activated carbon is placed inside the second placement holes to ensure that the activated carbon is located on the path of the recovery pipeline.

[0019] By adopting the above technical solution, the rubber strip has good elasticity and can be applied to the inside of recovery pipelines with different paths, so that the activated carbon can be placed on the path of the recovery pipeline to adsorb the exhaust gas.

[0020] In one embodiment, a slide groove is provided on the inner wall of the recovery pipeline along its path, one end of the slide groove is provided on the top surface of the recovery device body, and the rubber strip is movably arranged inside the slide groove.

[0021] By adopting the above technical solution, the rubber strip can be set on the path of the recovery pipeline through the opened slide groove, which not only ensures the adsorption effect, but also the rubber strip is inserted from the slide groove, avoiding the rubber strip occupying the space of the recovery pipeline and causing the exhaust gas to flow unsmoothly. At the same time, the rubber strip can be pulled out of the placement rod from the top of the recovery device body, and the activated carbon can be replaced regularly to ensure the adsorption effect.

[0022] In one embodiment, a second seal is provided at the end of the slide groove located on the top surface of the recovery device body.

[0023] By adopting the above technical solution, the position where the slide groove is opened on the top surface of the recovery device body is sealed to prevent the exhaust gas from leaking therefrom.

[0024] In one embodiment, the inner diameter of the air inlet gradually decreases from bottom to top, and an observation window is provided at the bottom end of the recovery device body to enable observation of the welding position.

[0025] By adopting the above technical solution, the exhaust gas generated at the welding point is prevented from escaping to the surrounding due to high temperature, so the air intake range of the air inlet is expanded to ensure the effect of absorbing the exhaust gas. However, while expanding the air inlet, it will affect the operator's observation of the welding point, so an observation window is designed.

[0026] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The waste gas generated at the welding point is sucked into the inside of the recovery device through the air inlet, and then enters the discharge pipeline from the air outlet through the recovery pipeline, and finally discharged to the waste gas treatment device for waste gas treatment. Because the recovery device body is always located on the barrel of the welding gun, there is no need to adjust the position of the waste gas recovery device when welding different welding points, thereby improving the welding work efficiency while ensuring that the waste gas recovery effect is not reduced; 2. By arranging the recovery pipeline around the gun barrel inside the recovery device body and arranging an adsorption component on the recovery pipeline, a preliminary adsorption can be performed in the waste gas recovery device to remove a part of the organic volatile compounds, thereby ensuring the treatment quality of the waste gas in the subsequent treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a welding gun with an exhaust gas recovery device according to an embodiment of the present invention; Figure 2 A schematic structural diagram of a first type of waste gas recovery device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the first placement hole according to an embodiment of the present invention; Figure 4 A schematic structural diagram of a second exhaust gas recovery device according to an embodiment of the present invention; Figure 5 for Figure 4 Top view of the .

[0028] In the figure: 1-gun barrel, 11-welding head, 2-exhaust gas recovery device, 21-recovery device body, 22-air inlet, 23-air outlet, 24-observation window, 25-recovery pipeline, 251-surrounding pipeline, 252-slide groove, 26-placing groove, 27-placing rod, 271-first placement hole, 272-blocking net, 28-first sealing member, 29-second sealing member. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0030] The welding gun with the exhaust gas recovery device in the embodiment of the present invention is shown in FIG. Figure 1 As shown, the welding gun with the exhaust gas recovery device comprises a gun barrel 1; a recovery device body 21 is sleeved on the gun barrel 1; an air inlet 22 is provided at one end of the recovery device body 21 close to the gun barrel welding head 11; an air outlet 23 is provided at one end of the recovery device body 21 away from the gun barrel welding head 11, and the air outlet 23 is connected to the exhaust gas treatment device through a discharge pipeline; a recovery pipeline 25 is provided inside the recovery device body 21, one end of the recovery pipeline 25 is connected to the air inlet 22, and the other end of the recovery pipeline 25 is connected to the air outlet 23.

[0031] It can be seen that in the present invention, during the welding process of the welding gun, there is suction inside the exhaust gas treatment device, so that there is suction inside the exhaust gas recovery device 2, and the exhaust gas generated at the welding point is sucked into the interior of the recovery device body 21 from the air inlet 22, and then enters the exhaust pipeline from the air outlet 23 through the recovery pipeline 25, and is finally discharged to the exhaust gas treatment device for exhaust gas treatment. Since the recovery device body 21 is mounted on the barrel 1 of the welding gun, the recovery device body 21 moves with the movement of the welding gun. Therefore, when welding different welding points, there is no need to adjust the position of the exhaust gas recovery device 2, thereby improving the welding work efficiency while ensuring that the exhaust gas recovery effect is not reduced.

[0032] Preferably, an adsorption component is provided on the recovery pipeline 25 to achieve preliminary adsorption of volatile organic compounds.

[0033] Specifically, the waste gas generated by plastic welding needs to be treated by methods such as activated carbon adsorption, combustion, photocatalysis, plasma technology and biological filter. In order to ensure the treatment quality of the waste gas in the subsequent treatment device and appropriately reduce the subsequent steps, during the waste gas recovery process, the waste gas recovery device 2 can perform some treatment methods at the same time. Therefore, an adsorption component is provided on the recovery pipeline 25 to perform a preliminary adsorption to remove a portion of the organic volatile compounds.

[0034] For further information, see Figure 2 As shown, a specific structure of a recovery pipeline 25 is provided: The recovery pipeline 25 surrounds the gun barrel 1 and is arranged inside the recovery device body 21. The recovery pipeline 25 includes a plurality of layers of surrounding pipelines 251. The plurality of layers of surrounding pipelines 251 are sequentially surrounded on the gun barrel 1 along the direction of the axis of the gun barrel 1. Two adjacent surrounding pipelines 251 are connected. The surrounding pipeline 251 near the air inlet 22 is connected to the air inlet 22, and the surrounding pipeline 251 near the air outlet 23 is connected to the air outlet 23.

[0035] Specifically, the recovery pipeline 25 is designed to be multi-layered, and each layer is designed to surround the barrel 1, which can increase the path of the recovery pipeline 25, thereby increasing the flow path of the exhaust gas in the recovery pipeline 25, thereby increasing the contact time between the exhaust gas and the adsorption component, thereby improving the adsorption effect of the adsorption component; the number of through holes between the surrounding pipeline 251 and the air inlet 22 can be designed according to the actual suction force requirements, that is, the through hole between the two can be one or more.

[0036] For further information, see Figure 2 As shown, the specific structure of the first adsorption component is provided: A plurality of placement grooves 26 are provided at the top of the recovery device body 21. The placement grooves 26 are provided along the axial direction of the barrel 1 and pass through a plurality of layers of surrounding pipes 251. The adsorption assembly includes a plurality of placement rods 27 and activated carbon. The placement rods 27 are inserted into the placement grooves 26, and the outer diameter of the placement rods 27 is smaller than the inner diameter of the surrounding pipes 251. A plurality of first placement holes 271 are provided on the placement rods 27. The activated carbon is placed inside the first placement holes 271 to ensure that the activated carbon is located on the path of the recovery pipe 25.

[0037] Specifically, the placement groove 26 is opened along the axial direction of the gun barrel 1, and because the multiple layers of surrounding pipelines 251 are sequentially arranged on the gun barrel 1 along the direction of the axis of the gun barrel 1, the placement groove 26 can pass through multiple different layers of surrounding pipelines 251 at the same time, so that when the placement rod 27 is fully inserted into the placement groove 26, the first placement hole 271 on the placement rod 27 for placing activated carbon is located exactly on the path of the surrounding pipeline 251, so as to adsorb the flowing exhaust gas. This design can not only determine the number of layers of the surrounding pipeline 251 through which the placement rod 27 passes according to the actual recovery pipeline 25 situation and adsorption requirements to achieve different adsorption effects, thereby improving the applicability of the welding gun, but also the placement rod 27 can be pulled out from the top of the recovery device body 21, and the activated carbon can be replaced regularly to ensure the adsorption effect.

[0038] Preferably, a first sealing member 28 is provided between the placement groove 26 and the placement rod 27 .

[0039] Specifically, there are multiple points between the placement groove 26 and the placement rod 27 where the first seal 28 can be set, among which the most preferred position is the end of the placement groove 26 located on the top surface of the recovery device body 21. The design here can always keep the exhaust gas inside the recovery device body 21, and the exhaust gas can only be discharged from the outlet 23. The design here is also convenient for the installation and disassembly of the first seal 28. Therefore, the first seal 28 not only ensures the sealing between the placement groove 26 and the placement rod 27, and prevents the exhaust gas from leaking from the gap between the two, but also realizes the fixation between the placement groove 26 and the placement rod 27. When the placement rod 27 needs to be removed, it is only necessary to remove the first seal 28 between the two.

[0040] Preferably, see Figure 3 As shown, a blocking net 272 is provided at the opening of the first placement hole 271 to ensure that the activated carbon is always located inside the first placement hole 271 .

[0041] Specifically, the blocking net 272 and the placement rod 27 are detachably connected, or the blocking net 272 can be opened and closed on the placement rod 27 like a door to prevent the activated carbon from leaking out of the first placement hole 271. The blocking net 272 is arranged at the opening of the first placement hole 271, and the exhaust gas can enter the first placement hole 271 and contact with the activated carbon, but the activated carbon will not come out of the first placement hole 271 during the adsorption work. When the activated carbon needs to be replaced, it is only necessary to open the blocking net 272.

[0042] Preferably, a specific structure of a second adsorption component is provided: The adsorption component includes a rubber strip and activated carbon. The rubber strip is laid inside the recovery pipeline 25 along the path of the recovery pipeline 25, and the outer diameter of the rubber strip is smaller than the inner diameter of the recovery pipeline 25. A plurality of second placement holes are opened on the rubber strip, and the activated carbon is placed inside the second placement holes to ensure that the activated carbon is located on the path of the recovery pipeline 25.

[0043] Specifically, the rubber strip has good elasticity, so the rubber strip is inserted into the interior of the recovery pipe 25 along the path of the recovery pipe 25, but the outer diameter of the rubber strip must be smaller than the inner diameter of the recovery pipe 25 to prevent the rubber strip from clogging the recovery pipe 25, and the activated carbon is placed inside the second placement hole opened on the rubber strip. When the exhaust gas passes through the activated carbon, the activated carbon will adsorb volatile organic compounds in the exhaust gas; the rubber strip can be applicable to recovery pipes 25 with different paths, and the cross-sectional shape of the recovery pipe 25 can also be various, as long as the rubber strip does not clog the recovery pipe 25, thereby further improving the applicability of the welding gun.

[0044] For further information, see Figure 4 , 5 As shown, the specific structure of the third adsorption component is provided: The inner wall of the recovery pipe 25 is provided with a slide groove 252 along its path. One end of the slide groove 252 is provided on the top surface of the recovery device body 21 . The rubber strip is movably disposed inside the slide groove 252 .

[0045] Specifically, the rubber strip can be set on the path of the recovery pipeline 25 through the opened slide groove 252, which not only ensures the adsorption effect, but also the rubber strip is inserted from the slide groove 252, avoiding the rubber strip occupying the space of the recovery pipeline 25 and causing the exhaust gas to flow unsmoothly. At the same time, the rubber strip can pull out the placement rod 27 from the top of the recovery device body 21, and regularly replace the activated carbon to ensure the adsorption effect.

[0046] Furthermore, a second sealing member 29 is provided at the end of the slide groove 252 located on the top surface of the recovery device body 21 .

[0047] Specifically, the position where the slide groove 252 is provided on the top surface of the recovery device body 21 is sealed to prevent the exhaust gas from leaking therefrom.

[0048] Preferably, a blocking net 272 is also provided at the opening of the second placement hole to ensure that the activated carbon is always located inside the second placement hole.

[0049] Specifically, the blocking net 272 and the placement rod 27 are detachably connected, or the blocking net 272 can be opened and closed on the placement rod 27 like a door to prevent the activated carbon from leaking out of the second placement hole. The blocking net 272 is arranged at the opening of the second placement hole, and the exhaust gas can enter the second placement hole and contact with the activated carbon, but the activated carbon will not come out of the second placement hole during adsorption work. When the activated carbon needs to be replaced, it is only necessary to open the blocking net 272.

[0050] Preferably, the inner diameter of the air inlet 22 gradually decreases from bottom to top, and an observation window 24 is provided at the bottom end of the recovery device body 21 to observe the welding position.

[0051] Specifically, in order to prevent the exhaust gas generated at the welding point from escaping to the surrounding due to high temperature, the air intake range of the air inlet 22 close to the welding point is expanded to ensure the effect of absorbing the exhaust gas. However, while expanding the air inlet 22, it will affect the operator's observation of the welding point. Therefore, an observation window 24 is designed, and the number and design size of the observation window 24 can be designed according to actual conditions.

[0052] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A welding gun with an exhaust gas recovery device, characterized in that: It includes: Barrel (1); A recovery device body (21) which is sleeved on the gun barrel (1); An air inlet (22) is provided at one end of the recovery device body (21) close to the welding head (11) of the gun barrel (1); An air outlet (23) is provided at an end of the recovery device body (21) away from the welding head (11) of the gun barrel (1), and the air outlet (23) is connected to the exhaust gas treatment device through an exhaust pipeline; The recovery pipeline (25) is opened inside the recovery device body (21); one end of the recovery pipeline (25) is connected to the air inlet (22), and the other end of the recovery pipeline (25) is connected to the air outlet (23).

2. The welding gun with exhaust gas recovery device according to claim 1, characterized in that: The recovery pipeline (25) is provided with an adsorption component to achieve preliminary adsorption of volatile organic compounds.

3. The welding gun with exhaust gas recovery device according to claim 2, characterized in that: The recovery pipeline (25) surrounds the gun barrel (1) and is arranged inside the recovery device body (21). The recovery pipeline (25) comprises a plurality of layers of surrounding pipelines (251). The plurality of layers of surrounding pipelines (251) are arranged on the gun barrel (1) in sequence along the direction of the axis of the gun barrel (1). Two adjacent surrounding pipelines (251) are connected to each other. The surrounding pipeline (251) close to the air inlet (22) is connected to the air inlet (22), and the surrounding pipeline (251) close to the air outlet (23) is connected to the air outlet (23).

4. The welding gun with exhaust gas recovery device according to claim 3, characterized in that: The top of the recovery device body (21) is provided with a plurality of placement grooves (26), the placement grooves (26) are provided along the axial direction of the gun barrel (1) and pass through a plurality of layers of surrounding pipelines (251), the adsorption assembly comprises a plurality of placement rods (27) and activated carbon, the placement rods (27) are inserted into the placement grooves (26), and the outer diameter of the placement rods (27) is smaller than the inner diameter of the surrounding pipeline (251), the placement rods (27) are provided with a plurality of first placement holes (271), and the activated carbon is placed inside the first placement holes (271), so that the activated carbon is located on the path of the recovery pipeline (25).

5. The welding gun with exhaust gas recovery device according to claim 4, characterized in that: A first sealing member (28) is provided between the placement groove (26) and the placement rod (27).

6. The welding gun with exhaust gas recovery device according to claim 4, characterized in that: A blocking net (272) is provided at the opening of the first placement hole (271) to ensure that the activated carbon is always located inside the first placement hole (271).

7. The welding gun with exhaust gas recovery device according to claim 3, characterized in that: The adsorption component comprises a rubber strip and activated carbon, wherein the rubber strip is laid inside the recovery pipeline (25) along the path of the recovery pipeline (25), and the outer diameter of the rubber strip is smaller than the inner diameter of the recovery pipeline (25), and a plurality of second placement holes are provided on the rubber strip, and the activated carbon is placed inside the second placement holes, so that the activated carbon is located on the path of the recovery pipeline (25).

8. The welding gun with exhaust gas recovery device according to claim 7, characterized in that: The inner wall of the recovery pipeline (25) is provided with a slide groove (252) along its path, one end of the slide groove (252) is opened on the top surface of the recovery device body (21), and the rubber strip is movably arranged inside the slide groove (252).

9. The welding gun with exhaust gas recovery device according to claim 8, characterized in that: A second sealing member (29) is provided at the end of the slide groove (252) located on the top surface of the recovery device body (21).

10. The welding gun with exhaust gas recovery device according to claim 1, characterized in that: The inner diameter of the air inlet (22) gradually decreases from bottom to top, and an observation window (24) is provided at the bottom end of the recovery device body (21) to enable observation of the welding position.

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