Plasma arc welding equipment with smoke suction function for medical instrument processing

Abstract

The invention discloses plasma arc welding equipment with a smoke suction function for medical instrument processing, relates to the technical field of medical instrument welding, and aims to solve the problem that in the welding process of a medical instrument with a smoke suction function in the prior art, after gas is sprayed out from a welding part, the gas can rapidly drift away from the welding part, and the welding is not influenced. In the welding process, high-temperature welding slag generated in the welding process can be blown by the gas to be splashed, and operators are prone to being hurt. According to the equipment, a semi-closed welding area is formed through a protection shell body and a movable protection shell in the protection mechanism, inert or active gas sprayed out of the welding module can only be slowly dissipated from the two ends instead of rapidly drifting away, gas consumption is greatly reduced, the gas utilization rate is optimized, welding slag is limited in the protection shell, and the welding efficiency is improved. The closed environment prevents welding slag from splashing to injure operators, and safety risks are reduced especially during high-frequency welding of medical instruments.

Description

Technical Field

[0001] This invention relates to the field of medical device welding technology, specifically to a plasma arc welding device for medical device processing with a smoking function. Background Technology

[0002] Medical devices with smoking functions, such as medical smoking machines, are surgical equipment that integrates a smoke purification system. Their core function is to capture the smoke containing cell debris, viruses, and chemical carcinogens that escapes from the surgical area in real time during processes such as high-frequency electrosurgical resection and laser ablation, which generate harmful aerosols. After purification by a built-in multi-stage filtration system, clean gas is emitted, thereby protecting medical staff from the risk of respiratory infections and maintaining a clear surgical field of vision.

[0003] In the processing of medical devices with smoking functions, some internal parts often need to be connected by welding. Therefore, plasma arc welding equipment is usually used in the processing. This is a precision equipment that uses a high-temperature, high-energy-density plasma arc as a heat source to weld metal materials. It achieves efficient fusion between metals through transfer arc or combined arc mode.

[0004] However, in the existing technology, during the welding process of medical devices with smoking functions, the welding part of the plasma arc welding equipment needs to use inert gas to protect and stabilize the arc, or use active gas to enhance the energy and temperature of the arc. But no matter what type of gas it is, after the gas is sprayed out at the welding part, it will quickly disperse and move away from the welding part, thus wasting the gas. In addition, the high-temperature welding slag generated during the welding process will also be blown by the gas and splashed, which can easily injure the operator. Summary of the Invention

[0005] The purpose of this invention is to provide a plasma arc welding device for medical device processing with a smoking function, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a plasma arc welding device for medical device processing with a fume extraction function, comprising a welding module. A protective mechanism is installed at the bottom of the welding module to prevent slag spatter and slow down gas escape. The protective mechanism includes: The protective shell body is movably installed on the outside of the bottom end of the welding module. Movable protective shells are installed at both ends of the protective shell body, and there is a movable connection between every two sets of movable protective shells. An adjustment mechanism is provided between the protective shell body and the movable protective shells, and an adjustment mechanism is also installed between the two sets of movable protective shells. The adjustment mechanism includes: A fixed rod is fixedly installed on the top of both sides of the main body of the protective shell and on the top of one side of multiple sets of movable protective shells. A connecting plate is fixedly installed on the top of the fixed rod. A third spring is provided between the other end of the connecting plate and the movable protective shell. The connecting plate is elastically connected to the movable protective shell through the third spring. The slider is fixedly installed on one side of the movable protective shell, and the slider is slidably connected to the sliding cavity. The sliding cavity is respectively opened on both sides of the main body of the protective shell and one side of the movable protective shell, and the movable protective shell is slidably connected to the main body of the protective shell through the cooperation of the slider and the sliding cavity.

[0007] As a preferred embodiment of the present invention, the adjusting mechanism further includes a slide rod, wherein the slide rod is fixedly installed on the other side of the connecting plate, and the slide rod is located inside the third spring, and the slide rod passes through the movable protective shell and is slidably connected to it.

[0008] As a preferred embodiment of the present invention, the adjustment mechanism further includes a first bonding plate and a second bonding plate; The first bonding plate is fixedly installed on one side of the movable protective shell, and the slider is fixedly installed on one side of the movable protective shell. The second bonding plate is fixedly installed on both sides of the protective shell body and the other side of the movable protective shell, and the sliding cavity is opened on one side of the second bonding plate.

[0009] As a preferred embodiment of the present invention, a rotating mechanism is installed on the top of the protective mechanism, the rotating mechanism comprising: The fixing component is movably installed on the top of the protective shell body, and rotating shafts are fixedly installed on both sides of the fixing component. The rotating shafts are rotatably connected to the connecting components, and two sets of connecting components are fixedly installed on the top of the protective shell body. The rotating shafts and connecting components serve to make the protective shell body rotate relative to the fixing component.

[0010] As a preferred embodiment of the present invention, the rotating mechanism further includes a movable rod and a second spring; The movable rod is curved and passes through the fixing member and is slidably connected to it. Both ends of the movable rod pass through the protective shell body and are slidably connected to it. Multiple sets of second springs are installed between the fixing member and the protective shell body, and each set of second springs is located outside the movable rod. The fixing member is elastically connected to the protective shell body through multiple sets of second springs.

[0011] As a preferred embodiment of the present invention, the fixing member has a rotating cavity inside, the rotating shell is fixedly connected to the inner side of the top of the protective shell body, and the rotating shell is located inside the rotating cavity. The top of the rotating shell has a movable cavity, and the movable cavity serves to prevent interference between the welding module and the protective mechanism.

[0012] As a preferred embodiment of the present invention, the protective mechanism further includes rollers and a fixed housing; Each pair of fixed shells is bolted to the top of a set of movable protective shells. The interior of each set of fixed shells is rotatably connected to a roller, and the roller serves to reduce the friction between the protective mechanism and the parts.

[0013] In a preferred embodiment of the present invention, a driving mechanism is mounted on the top of the rotating mechanism, the driving mechanism comprising: A swing cylinder is movably mounted outside the welding module, and one side of the swing cylinder is fixedly connected to the robotic arm by bolts. The robotic arm moves the position of the welding module through a drive mechanism.

[0014] As a preferred embodiment of the present invention, the driving mechanism further includes a guide rod and a fixing plate; The fixing plate is fixedly installed on the top of the fixing component, and multiple sets of guide rods pass through the fixing plate and are fixedly connected to the fixing component. The welding device passes through the fixing plate and is movably connected to it.

[0015] As a preferred embodiment of the present invention, the driving mechanism further includes a fixed sleeve and a first spring; The fixed sleeve is fixedly installed at the bottom of the swing cylinder, and the top of the guide rod passes through the bottom of the fixed sleeve. A first spring is provided between the fixed sleeve and the fixed plate, and the first spring is located outside the welding module.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The plasma arc welding equipment for medical device processing with a smoking function forms a semi-enclosed welding area through the protective shell body and the movable protective shell in the protective mechanism, which forces the inert or active gas sprayed by the welding module to slowly dissipate from both ends instead of rapidly dissipating, which greatly reduces gas consumption and optimizes gas utilization. It is suitable for thin plates or precision parts commonly used in medical device welding, thereby reducing production costs. 2. This plasma arc welding equipment for medical device processing with a smoking function, through the design of the protective mechanism, confines the welding slag inside the protective shell. This closed environment avoids the injury of the operator to the welding slag spatter, especially when welding medical devices at high frequency, thus reducing safety risks. 3. The plasma arc welding equipment for medical device processing with a smoking function has a protective mechanism that can retain some of the heat generated by the welding module, reduce heat loss to the surrounding environment, indirectly improve the energy concentration of the plasma arc, and thus speed up the welding process. 4. The plasma arc welding equipment for medical device processing with a smoking function can dynamically adapt to the surface shape of the part through the adjustment mechanism, in which the movable protective shell, slider and spring cooperate with each other. For flat or curved surfaces, the movable protective shell can slide alternately under the action of the third spring to ensure that the protective mechanism is in close contact with the workpiece and prevent gas and heat from dissipating rapidly. 5. This plasma arc welding equipment for medical device processing with a smoking function reduces friction between the protective mechanism and the workpiece surface through rollers, facilitating smooth movement of the equipment on the workpiece by the robotic arm. At the same time, the rotating mechanism allows the protective mechanism to adaptively adjust with changes in the welding angle and return to the vertical position after welding, ensuring a continuous and stable welding process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a first-view structural schematic diagram of some parts of the present invention; Figure 3 This is a second-view structural schematic diagram of some parts of the present invention; Figure 4 This is the present invention. Figure 3 Enlarged view of point A; Figure 5 This is a schematic diagram of the drive mechanism and rotation mechanism of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged view of point B; Figure 7 This is a schematic diagram of the structure of the protective mechanism and the adjustment mechanism of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of point C; Figure 9 This is a cross-sectional view of the adjustment mechanism of the present invention; Figure 10 This is the present invention. Figure 9 Enlarged view of point D.

[0018] In the picture: 1. Welding module; 2. Drive mechanism; 20. Swing cylinder; 21. Fixed sleeve; 22. Guide rod; 23. First spring; 24. Fixed plate; 3. Rotating mechanism; 30. Fixed component; 31. Rotating shaft; 32. Movable rod; 33. Second spring; 34. Rotating cavity; 4. Protective mechanism; 40. Main body of protective shell; 41. Movable protective shell; 42. Roller; 43. Rotating shell; 44. Connecting parts; 45. Movable cavity; 46. Fixed shell; 5. Adjustment mechanism; 50. Fixed rod; 51. Slide rod; 52. Third spring; 53. Connecting plate; 54. First bonding plate; 55. Second bonding plate; 56. Slider; 57. Sliding cavity; 6. Robotic arm. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 10 This invention provides a technical solution: a plasma arc welding device for medical device processing with a smoking function, comprising a welding module 1, wherein a protective mechanism 4 is installed at the bottom of the welding module 1 to prevent slag spatter and slow down the gas escape rate, the protective mechanism 4 comprising: In this invention, the protective shell body 40 is movably installed on the outside of the bottom end of the welding module 1. Movable protective shells 41 are installed at both ends of the protective shell body 40, and there is a movable connection between every two sets of movable protective shells 41. An adjustment mechanism 5 is provided between the protective shell body 40 and the movable protective shells 41, and an adjustment mechanism 5 is also installed between the two sets of movable protective shells 41. The adjustment mechanism 5 in this invention includes: The fixed rod 50 is fixedly installed on the top of both sides of the protective shell body 40 and on the top of one side of multiple sets of movable protective shells 41. A connecting plate 53 is fixedly installed on the top of the fixed rod 50. A third spring 52 is provided between the other end of the connecting plate 53 and the movable protective shell 41. The connecting plate 53 is elastically connected to the movable protective shell 41 through the third spring 52. When the welding is finished, the robotic arm 6 is lifted. At this time, the protective mechanism 4 will return to a state perpendicular to the welding module under the action of the second spring 33 and the movable rod 32. At the same time, under the action of the first spring 23, the protective mechanism 4 will return to its initial position. In this invention, the slider 56 is fixedly installed on one side of the movable protective shell 41, and the slider 56 is slidably connected to the sliding cavity 57. The sliding cavity 57 is respectively opened on both sides of the protective shell body 40 and one side of the movable protective shell 41, and the movable protective shell 41 is slidably connected to the protective shell body 40 through the cooperation of the slider 56 and the sliding cavity 57. The protective mechanism 4, under the action of the adjustment mechanism 5, adapts to the surface of the part. When the surface of the part is flat, multiple sets of movable protective shells 41 will squeeze the third spring 52, so that the third spring 52 is in a compressed state. At this time, the protective shell body 40 and the multiple sets of movable protective shells 41 will be on the same horizontal plane under the action of multiple sets of rollers 42. At this time, the welding module 1 is started and will weld the part through plasma arc. The gas ejected from the bottom of the welding module 1 will be blocked by the protective mechanism 4, and the gas can only escape from both ends of the protective mechanism 4, thereby slowing down the gas escape rate. The design of the protective mechanism 4 confines the welding slag within the protective shell body 40 and the movable protective shell 41. This enclosed environment prevents welding slag from splashing and injuring operators, especially when welding medical devices at high frequencies, thus reducing safety risks. The protective shell body 40 and the movable protective shell 41 in the protective mechanism 4 form a semi-enclosed welding area, which forces the inert or active gas sprayed by the welding module to slowly dissipate from both ends instead of rapidly dissipating, greatly reducing gas consumption and optimizing gas utilization. It is suitable for thin plates or precision parts commonly used in the welding of medical devices, thereby reducing production costs. In the example, the adjustment mechanism 5 also includes a slide rod 51, wherein the slide rod 51 is fixedly installed on the other side of the connecting plate 53, and the slide rod 51 is located inside the third spring 52, and the slide rod 51 passes through the movable protective shell 41 and is slidably connected to it; The adjustment mechanism 5 in this invention also includes a first bonding plate 54 and a second bonding plate 55; Furthermore, the first bonding plate 54 is fixedly installed on one side of the movable protective shell 41, and the slider 56 is fixedly installed on one side of the movable protective shell 41. The second bonding plate 55 is fixedly installed on both sides of the protective shell body 40 and the other side of the movable protective shell 41, and the sliding cavity 57 is opened on one side of the second bonding plate 55. If the surface of the part is curved, the protective mechanism 4 will fit as close as possible to the curved surface of the part under the action of the adjustment mechanism 5. First, with the cooperation of the connecting plate 53 installed on the protective shell body 40 and the movable protective shell 41 and the third spring 52, the third spring 52 will release elastic potential energy, so that the two sets of sliders 56 installed on the first bonding plate 54 can slide in the sliding cavity 57 on the second bonding plate 55. Through the adjustment mechanism 5, the movable protective shell 41, the slider 56 and the third spring 52 work together to dynamically adapt to the shape of the part surface. For flat or curved surfaces, the movable protective shell 41 can slide alternately under the action of the third spring 52 to ensure that the protective mechanism 4 is in close contact with the workpiece and prevent gas and heat from dissipating rapidly. In the example, a rotating mechanism 3 is mounted on top of the protective mechanism 4. The rotating mechanism 3 includes: In this invention, the fixing member 30 is movably installed on the top of the protective shell body 40, and rotating shafts 31 are fixedly installed on both sides of the fixing member 30. The rotating shafts 31 are rotatably connected to the connecting members 44, and two sets of connecting members 44 are fixedly installed on the top of the protective shell body 40. The rotating shafts 31 and the connecting members 44 serve to make the protective shell body 40 rotate relative to the fixing member 30. Furthermore, the rotating mechanism 3 also includes a movable rod 32 and a second spring 33; In this invention, the movable rod 32 is curved as a whole, and the movable rod 32 passes through the fixing member 30 and is slidably connected to it. Both ends of the movable rod 32 pass through the protective shell body 40 and are slidably connected to it. Multiple sets of second springs 33 are installed between the fixing member 30 and the protective shell body 40, and each set of second springs 33 is located outside the movable rod 32. The fixing member 30 is elastically connected to the protective shell body 40 through multiple sets of second springs 33. Furthermore, the fixing member 30 has a rotating cavity 34 inside, and a rotating shell 43 is fixedly connected to the inner side of the top of the protective shell body 40. The rotating shell 43 is located inside the rotating cavity 34. The top of the rotating shell 43 has a movable cavity 45, and the movable cavity 45 serves to prevent interference between the welding module 1 and the protective mechanism 4. During the movement of the robotic arm 6, the angle between the welding module 1 and the protective mechanism 4 will gradually change. In order to ensure that the protective mechanism 4 can protect the welding area, when the welding module 1 and the protective mechanism 4 form an angle, the connecting parts 44 installed on both sides of the protective shell body 40, in cooperation with the rotating shaft 31, can realize the effect of the protective mechanism 4 rotating relative to the rotating mechanism 3, so that the protective mechanism 4 can adapt to the tilt state between the welding modules 1. To prevent the welding area from being exposed when the protective mechanism 4 rotates, thus causing incomplete protection, a fixed rotating shell 43 is installed inside the protective shell body 40 after the protective mechanism 4 rotates. Therefore, the rotating shell 43 moves inside the rotating cavity 34 along with the protective shell body 40. At the same time, to ensure that the welding module 1 does not interfere with the protective mechanism 4 due to its rotation, a movable cavity 45 is opened at the top of the rotating shell 43. The welding module 1 can pass through the movable cavity 45, thus avoiding interference with the protective mechanism 4. In the example, the protective mechanism 4 also includes rollers 42 and a fixed housing 46; In this invention, every two sets of fixed shells 46 are fixedly installed on the top of a set of movable protective shells 41 by bolts. The interior of each set of fixed shells 46 is rotatably connected to the rollers 42, and the rollers 42 serve to reduce the friction between the protective mechanism 4 and the parts. During the welding process, as the robotic arm 6 moves, the welding module 1 and the protective mechanism 4 move together on the part. The presence of the roller 42 reduces the friction between the protective mechanism 4 and the part, thus ensuring the movement effect of the protective mechanism 4. The roller 42 reduces the friction between the protective mechanism 4 and the surface of the part, making it easier for the robotic arm to move the equipment smoothly on the workpiece. At the same time, the rotating mechanism 3 allows the protective mechanism 4 to adaptively adjust with the welding angle and return to the vertical position after welding, ensuring that the welding process is continuous and stable. In the example, a drive mechanism 2 is mounted on top of the rotating mechanism 3. The drive mechanism 2 includes: In this invention, the swing cylinder 20 is movably installed outside the welding module 1, and one side of the swing cylinder 20 is fixedly connected to the robotic arm 6 by bolts. The robotic arm 6 moves the position of the welding module 1 through the drive mechanism 2. The user places the medical device parts to be welded on the worktable, and then controls the movement of the robotic arm 6 through the driver program of the robotic arm 6, thereby controlling the position movement of the welding module 1. When the head of the welding module 1 is about to contact the part to be welded, the protective mechanism 4 will contact the part first, with the roller 42 contacting the surface of the part first. The welding module 1 can slide within the drive mechanism 2 and the protective mechanism 4. Therefore, under the control of the robotic arm 6, the welding module 1 will slide within the drive mechanism 2 and the protective mechanism 4. In the example, the drive mechanism 2 also includes a guide rod 22 and a fixing plate 24; In this invention, the fixing plate 24 is fixedly installed on the top of the fixing member 30, multiple sets of guide rods 22 pass through the fixing plate 24 and are fixedly connected to the fixing member 30, and the welding device 1 passes through the fixing plate 24 and is movably connected to it; Furthermore, the drive mechanism 2 also includes a fixed sleeve 21 and a first spring 23; In this invention, the fixed sleeve 21 is fixedly installed at the bottom of the swing cylinder 20, and the top of the guide rod 22 passes through the bottom of the fixed sleeve 21. A first spring 23 is provided between the fixed sleeve 21 and the fixed plate 24, and the first spring 23 is located outside the welding module 1. Since the swing cylinder 20 is internally fixedly installed on the welding module 1, and the bottom of the swing cylinder 20 is fixedly connected to the fixed sleeve 21, and multiple sets of guide rods 22 can slide on the fixed sleeve 21, the welding module 1 is pressed down under the drive of the robotic arm 6, which causes the fixed sleeve 21 to squeeze the first spring 23. At the same time, the multiple sets of guide rods 22 slide inside the bottom end of the fixed sleeve 21, thereby shortening the distance between the fixed sleeve 21 and the fixed plate 24. This allows the welding module 1 to get closer to the part, thus facilitating the welding of the part.

[0021] The working principle of this invention is as follows: When in use, the power is turned on, the user first places the parts of the medical device to be welded on the worktable, and then controls the movement of the robotic arm 6 through the driver program of the robotic arm 6, thereby controlling the position movement of the welding module 1. Then the user needs to adjust the angle of the protective mechanism 4 according to the position of the parts. The swing cylinder 20 is connected to compressed gas. The user only needs to control the connection between the swing cylinder 20 and the compressed gas to drive the swing cylinder 20 to work. The welding module 1 passes through the drive mechanism 2, and therefore the swing cylinder 20 can drive the fixed sleeve 21 to rotate, so that the protective mechanism 4 rotates around the welding module 1, and can be adjusted to a suitable angle. When the head of welding module 1 is about to contact the part to be welded, the protective mechanism 4 will contact the part first, with the roller 42 contacting the surface of the part first. Welding module 1 can slide within the drive mechanism 2 and the protective mechanism 4. Therefore, under the control of the robotic arm 6, welding module 1 will slide within the drive mechanism 2 and the protective mechanism 4. Since the swing cylinder 20 is internally fixedly installed on the welding module 1, and the bottom of the swing cylinder 20 is fixedly connected to the fixed sleeve 21, and multiple sets of guide rods 22 can slide on the fixed sleeve 21, the welding module 1 is pressed down under the drive of the robotic arm 6, which will cause the fixed sleeve 21 to squeeze the first spring 23. At the same time, multiple sets of guide rods 22 slide inside the bottom end of the fixed sleeve 21, thereby shortening the distance between the fixed sleeve 21 and the fixed plate 24, and thus allowing the welding module 1 to get closer to the part, thereby facilitating the welding of the part. At this time, the protective mechanism 4 will adapt to the surface of the part under the action of the adjustment mechanism 5. When the surface of the part is flat, the multiple sets of movable protective shells 41 will squeeze the third spring 52, so that the third spring 52 is in a compressed state. At this time, the protective shell body 40 and the multiple sets of movable protective shells 41 will be on the same horizontal plane under the action of the multiple sets of rollers 42. At this time, the welding module 1 will start and weld the part through plasma arc. The gas ejected from the bottom of the welding module 1 will be blocked by the protective mechanism 4. The gas can only escape from both ends of the protective mechanism 4, thereby slowing down the gas escape rate. Furthermore, due to the presence of the protective mechanism 4, some of the heat emitted from the bottom of the welding module 1 will be retained within the protective shell body 40 and the movable protective shell 41, thereby slowing down the heat loss in the welding area and indirectly improving the welding efficiency. As for the welding slag produced during the welding process, since the welding area is located inside the protective shell body 40, the welding slag will only splash into the protective shell body 40 when it is spattered, thus avoiding the situation where the welding slag will splash everywhere. If the surface of the part is curved, the protective mechanism 4 will fit as close as possible to the curved surface of the part under the action of the adjustment mechanism 5. First, with the cooperation of the connecting plate 53 installed on the protective shell body 40 and the movable protective shell 41 and the third spring 52, the third spring 52 will release elastic potential energy, so that the two sets of sliders 56 installed on the first bonding plate 54 can slide in the sliding cavity 57 on the second bonding plate 55. At this time, the multiple sets of movable protective shells 41 will be staggered, and the movable protective shells 41 and the protective shell body 40 will also be staggered, so that the multiple sets of movable protective shells 41 can fit the curved surface of the part as closely as possible, thereby slowing down the dissipation rate of gas and heat in the protective mechanism 4 and preventing the splashing of welding slag. During the welding process, as the robotic arm 6 moves, the welding module 1 and the protective mechanism 4 move together on the part. The presence of the roller 42 reduces the friction between the protective mechanism 4 and the part, thus ensuring the movement effect of the protective mechanism 4. Furthermore, during the movement of the robotic arm 6, the angle between the welding module 1 and the protective mechanism 4 will gradually change. In order to ensure that the protective mechanism 4 can protect the welding area, when the welding module 1 and the protective mechanism 4 form an angle, the connecting parts 44 installed on both sides of the protective shell body 40, in cooperation with the rotating shaft 31, can achieve the effect of the protective mechanism 4 rotating relative to the rotating mechanism 3, so that the protective mechanism 4 can adapt to the tilt state between the welding modules 1. To prevent the welding area from being exposed when the protective mechanism 4 rotates, thus causing incomplete protection, a fixed rotating shell 43 is installed inside the protective shell body 40 after the protective mechanism 4 rotates. Therefore, the rotating shell 43 moves inside the rotating cavity 34 along with the protective shell body 40. At the same time, to ensure that the welding module 1 does not interfere with the protective mechanism 4 due to its rotation, a movable cavity 45 is opened at the top of the rotating shell 43. The welding module 1 can pass through the movable cavity 45, thus avoiding interference with the protective mechanism 4. When welding is completed, the robotic arm 6 is lifted. At this time, the protective mechanism 4 will return to a state perpendicular to the welding module under the action of the second spring 33 and the movable rod 32. At the same time, under the action of the first spring 23, the protective mechanism 4 will return to its initial position. The above structure solves the technical problems of gas being quickly dispersed from the welding area during welding of medical devices, resulting in gas waste, and high-temperature welding slag being blown away by the gas during the welding process, which can easily injure operators.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plasma arc welding device for medical device processing with a smoking function, comprising a welding module (1), wherein a protective mechanism (4) is installed at the bottom of the welding module (1) for preventing slag spatter and slowing down the gas escape rate, characterized in that, The protective mechanism (4) includes: The protective shell body (40) is movably installed on the outside of the bottom end of the welding module (1). The protective shell body (40) has movable protective shells (41) installed at both ends, and there is a movable connection between each two sets of movable protective shells (41). An adjustment mechanism (5) is provided between the protective shell body (40) and the movable protective shells (41), and an adjustment mechanism (5) is also installed between the two sets of movable protective shells (41). The adjustment mechanism (5) includes: A fixed rod (50) is fixedly installed on the top of both sides of the protective shell body (40) and on the top of one side of multiple sets of movable protective shells (41). A connecting plate (53) is fixedly installed on the top of the fixed rod (50). A third spring (52) is provided between the other end of the connecting plate (53) and the movable protective shell (41). The connecting plate (53) is elastically connected to the movable protective shell (41) through the third spring (52). The slider (56) is fixedly installed on one side of the movable protective shell (41), and the slider (56) is slidably connected to the sliding cavity (57). The sliding cavity (57) is respectively opened on both sides of the protective shell body (40) and one side of the movable protective shell (41). The movable protective shell (41) is slidably connected to the protective shell body (40) through the cooperation of the slider (56) and the sliding cavity (57).

2. The plasma arc welding equipment for medical device processing with a smoking function according to claim 1, characterized in that: The adjustment mechanism (5) further includes a slide rod (51), wherein the slide rod (51) is fixedly installed on the other side of the connecting plate (53), and the slide rod (51) is located inside the third spring (52), and the slide rod (51) passes through the movable protective shell (41) and is slidably connected to it.

3. The plasma arc welding equipment for medical device processing with a smoking function according to claim 1, characterized in that: The adjustment mechanism (5) further includes a first bonding plate (54) and a second bonding plate (55); The first bonding plate (54) is fixedly installed on one side of the movable protective shell (41), and the slider (56) is fixedly installed on one side of the movable protective shell (41). The second bonding plate (55) is fixedly installed on both sides of the protective shell body (40) and the other side of the movable protective shell (41), and the sliding cavity (57) is opened on one side of the second bonding plate (55).

4. The plasma arc welding equipment for medical device processing with a smoking function according to claim 1, characterized in that: The protective mechanism (4) is equipped with a rotating mechanism (3) on its top, the rotating mechanism (3) comprising: The fixing member (30) is movably installed on the top of the protective shell body (40), and the fixing member (30) has a rotating shaft (31) fixedly installed on both sides. The rotating shaft (31) is rotatably connected to the connecting member (44) on the outside, and the two sets of connecting members (44) are fixedly installed on the top of the protective shell body (40). The rotating shaft (31) and the connecting member (44) serve to make the protective shell body (40) rotate relative to the fixing member (30).

5. The plasma arc welding equipment for medical device processing with a smoking function according to claim 4, characterized in that: The rotating mechanism (3) also includes a movable rod (32) and a second spring (33); The movable rod (32) is curved in the whole, and the movable rod (32) passes through the fixing member (30) and is slidably connected to it. Both ends of the movable rod (32) pass through the protective shell body (40) and are slidably connected to it. Multiple sets of second springs (33) are installed between the fixing member (30) and the protective shell body (40), and each set of second springs (33) is located outside the movable rod (32). The fixing member (30) is elastically connected to the protective shell body (40) through multiple sets of second springs (33).

6. The plasma arc welding equipment for medical device processing with a smoking function according to claim 4, characterized in that: The fixing component (30) has a rotating cavity (34) inside. The rotating shell (43) is fixedly connected to the inner side of the top of the protective shell body (40), and the rotating shell (43) is located inside the rotating cavity (34). The rotating shell (43) has a movable cavity (45) at the top, and the movable cavity (45) serves to prevent interference between the welding module (1) and the protective mechanism (4).

7. The plasma arc welding equipment for medical device processing with a smoking function according to claim 4, characterized in that: The protective mechanism (4) also includes rollers (42) and a fixed shell (46). Two sets of fixed shells (46) are fixedly installed on the top of a set of movable protective shells (41) by bolts. The interior of each set of fixed shells (46) is rotatably connected to the rollers (42), and the rollers (42) reduce the friction between the protective mechanism (4) and the parts.

8. The plasma arc welding equipment for medical device processing with a smoking function according to claim 4, characterized in that: A drive mechanism (2) is mounted on the top of the rotating mechanism (3), and the drive mechanism (2) includes: The swing cylinder (20) is movably installed outside the welding module (1), and one side of the swing cylinder (20) is fixedly connected to the robotic arm (6) by bolts. The robotic arm (6) moves the position of the welding module (1) through the drive mechanism (2).

9. A plasma arc welding device for medical device processing with a smoking function according to claim 8, characterized in that: The drive mechanism (2) also includes a guide rod (22) and a fixing plate (24); The fixing plate (24) is fixedly installed on the top of the fixing member (30), and multiple sets of the guide rods (22) pass through the fixing plate (24) and are fixedly connected to the fixing member (30). The welding device (1) passes through the fixing plate (24) and is movably connected to it.

10. The plasma arc welding equipment for medical device processing with a smoking function according to claim 9, characterized in that: The drive mechanism (2) also includes a fixed sleeve (21) and a first spring (23); The fixed sleeve (21) is fixedly installed at the bottom of the swing cylinder (20), and the top of the guide rod (22) passes through the bottom of the fixed sleeve (21). A first spring (23) is provided between the fixed sleeve (21) and the fixed plate (24), and the first spring (23) is located outside the welding module (1).

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