Welding gun sealing connection assembly and handheld welding gun
By designing sealing connection components of wear-resistant sleeves and sealing rings in the welding torch, safety and quality problems caused by dust or debris in the welding torch are solved, and higher welding quality and safety are achieved.
Patent Information
- Application Number
- CN202421041506.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the assembly and use of the welding torch, dust or debris in the optical path may cause the inner wall of the welding torch to scratch, resulting in dust or debris, which in turn causes bursting, combustion or affects the transmission efficiency of the laser, resulting in a decrease in welding quality.
Design a welding gun sealing connection assembly, including a wear-resistant sleeve and a sealing ring, by setting the wear-resistant sleeve at the end of the optical fiber output device, and using the wear-resistant sleeve and limit steps when the optical fiber output device penetrates the welding gun communication channel. Joint extrusion of the sealing ring to achieve sealing connection between the optical fiber output device and the welding gun to avoid the generation and accumulation of dust or debris.
It effectively avoids scratching between the optical fiber output device and the inner wall of the welding torch, prevents dust or debris from burning in the welding torch or affecting laser transmission, and improves the safety of the welding torch and welding quality.
Smart Images
Figure CN222511427U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding guns, in particular to a welding gun sealing connection component and a handheld welding gun. Background Art
[0002] In the field of laser welding, laser welding guns are widely used as handheld laser welding equipment with simple structure and convenient operation. Handheld welding guns generally perform welding by emitting laser light. The light path is emitted from the QBH, collimated by the collimator, and then reflected to the focusing mirror by the reflector of the galvanometer motor, focusing the light into a point for welding.
[0003] When assembling the laser welding gun, the QBH component needs to be installed into the muzzle of the welding gun. When the hardware of the QBH / QCS component is installed into the welding gun, it is very easy to scratch the inner wall of the welding gun, thereby generating dust or debris on the inner wall of the welding gun. In the process of laser welding with a welding gun, the laser beam energy is extremely high. If there is dust or debris in the optical path, these impurities may absorb the laser energy, causing local instantaneous temperature rise, resulting in explosion or combustion, forming spatter, causing serious damage to the operator's eyes and skin, and even causing fire accidents. Moreover, dust and debris in the optical path may absorb On optical lenses, such as focusing mirrors and reflectors, the light transmittance of the lenses decreases, affecting the transmission efficiency and focusing quality of the laser, thereby reducing the welding effect, such as uneven welds and increased weld defects. In the long run, it may also damage expensive optical components and increase maintenance costs. Furthermore, laser welding relies on high-precision beam control and energy transmission. Any slight obstruction or scattering will affect the precise positioning and energy distribution of the laser, resulting in uneven energy absorption at the welding site, affecting the welding depth, width and appearance quality. In severe cases, it will lead to welding failure and product scrapping. Utility Model Content
[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the related art. The present invention provides a welding gun sealing connection assembly and a handheld welding gun.
[0005] The utility model provides the following technical solutions:
[0006] A welding gun sealing connection assembly, used for sealing connection between an optical fiber output device and a welding gun, comprising:
[0007] A wear-resistant sleeve is sleeved on the interface of the optical fiber output device, and an annular boss is provided on the inner wall of the wear-resistant sleeve, and the inner diameter of the annular boss is smaller than the interface diameter of the optical fiber output device;
[0008] A sealing ring, arranged on the end surface of the wear-resistant sleeve away from the optical fiber output device;
[0009] When the optical fiber output device is inserted into the communication channel of the welding gun, it can press the wear-resistant sleeve to move toward the limiting step in the communication channel, so that the wear-resistant sleeve and the limiting step can jointly squeeze the sealing ring.
[0010] As a further improvement of the above technical solution, the wear-resistant sleeve and the sealing ring are integrally formed.
[0011] As a further improvement of the above technical solution, a limiting convex ring is provided on the end surface of the wear-resistant sleeve away from the optical fiber output device, the outer diameter of the limiting convex ring is smaller than the inner diameter of the limiting step, and the sealing ring is arranged outside the limiting convex ring.
[0012] As a further improvement of the above technical solution, the cross-sectional shape of the sealing ring when not squeezed is circular.
[0013] As a further improvement of the above technical solution, a conical avoidance groove is provided between the end of the wear-resistant sleeve close to the optical fiber output device and the inner wall of the wear-resistant sleeve.
[0014] As a further improvement of the above technical solution, the wear-resistant sleeve is made of Teflon material.
[0015] As a further improvement of the above technical solution, an extrusion groove corresponding to the sealing ring is formed on the end surface of the limiting step close to the optical fiber output device.
[0016] As a further improvement of the above technical solution, the sealing ring is made of Teflon material.
[0017] As a further improvement of the above technical solution, a mounting screw hole is provided on the side wall of the optical fiber output device, a screw is passed through the gun body of the welding gun, and the screw is passed through the mounting screw hole through threaded engagement.
[0018] The utility model also provides a handheld welding gun, comprising the welding gun sealing connection assembly as described in any one of the above.
[0019] Compared with the related art, the beneficial effects of the utility model are:
[0020] The welding gun sealing connection assembly provided by the utility model, when in use, firstly sets the wear-resistant sleeve on the end of the optical fiber output device, then sets the sealing ring on the end face of the wear-resistant sleeve away from the optical fiber output device, and then inserts the end of the optical fiber output device into the communication channel of the welding gun. In the process of inserting the end of the optical fiber output device into the communication channel of the welding gun, since the wear-resistant sleeve is located between the end of the optical fiber output device and the inner wall of the communication channel of the welding gun, the contact between the end of the optical fiber output device and the communication channel of the welding gun is isolated, which can effectively prevent the optical fiber output device from being scratched with the inner wall of the communication channel to generate dust or debris in the welding gun. Chips, thereby preventing the welding gun from being burned during work due to dust or debris in the optical path of the connecting channel, thereby improving the safety of the welding gun; and as the end of the optical fiber output device gradually penetrates into the connecting channel of the welding gun, it will eventually drive the push-on wear-resistant sleeve to make the wear-resistant sleeve and the limiting step jointly squeeze the sealing ring, so that the end of the optical fiber output device and the limiting step in the connecting channel are closely abutted, thereby ensuring the sealed connection between the optical fiber output device and the welding gun, and can effectively prevent external dust and other debris from entering the welding gun through the connection between the end of the optical fiber output device and the limiting step in the connecting channel, further improving the safety of the welding gun.
[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 A cross-sectional view of a welding gun sealing connection assembly in one embodiment of the utility model is shown;
[0024] Figure 2 Shows Figure 1 A magnified schematic diagram of center A.
[0025] Description of main component symbols:
[0026] 100 - welding gun; 110 - connecting channel; 120 - limiting step; 121 - extrusion groove; 200 - optical fiber output device; 300 - wear-resistant sleeve; 310 - annular boss; 320 - limiting convex ring; 330 - conical avoidance groove; 400 - sealing ring. DETAILED DESCRIPTION
[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0032] Example 1
[0033] Combination Figure 1 , Figure 2 As shown, this embodiment provides a welding gun sealing connection assembly for sealingly connecting the optical fiber output device 200 with the welding gun 100 , including a wear-resistant sleeve 300 and a sealing ring 400 .
[0034] The wear-resistant sleeve 300 is sleeved on the interface of the optical fiber output device 200, and an annular boss 310 is provided on the inner wall of the wear-resistant sleeve 300, and the inner diameter of the annular boss 310 is smaller than the interface diameter of the optical fiber output device 200; the sealing ring 400 is arranged on the end face of the wear-resistant sleeve 300 away from the optical fiber output device 200; when the optical fiber output device 200 is inserted into the connecting channel 110 of the welding gun 100, it can press the wear-resistant sleeve 300 to move close to the limiting step 120 in the connecting channel 110, so that the wear-resistant sleeve 300 and the limiting step 120 jointly squeeze the sealing ring 400.
[0035] The welding gun sealing connection assembly provided in the present embodiment, when in use, firstly, the wear-resistant sleeve 300 is sleeved on the end of the optical fiber output device 200, and then the sealing ring 400 is arranged on the end face of the wear-resistant sleeve 300 away from the optical fiber output device 200, and then the end of the optical fiber output device 200 is inserted into the connecting channel 110 of the welding gun 100. In the process of inserting the end of the optical fiber output device 200 into the connecting channel 110 of the welding gun 100, since the wear-resistant sleeve 300 is located between the end of the optical fiber output device 200 and the inner wall of the connecting channel 110 of the welding gun 100, the contact between the end of the optical fiber output device 200 and the connecting channel 110 of the welding gun 100 is isolated, which can effectively prevent the optical fiber output device 200 from scratching against the inner wall of the connecting channel 110 and generating dust or debris in the welding gun 100, thereby preventing the welding gun 100 from being burned during operation due to the presence of dust or debris in the optical path of the connecting channel 110, thereby improving the use safety of the welding gun 100.
[0036] As the end of the optical fiber output device 200 gradually penetrates into the connecting channel 110 of the welding gun 100, it will eventually push the wear-resistant sleeve 300 so that the wear-resistant sleeve 300 and the limiting step 120 jointly squeeze the sealing ring 400, so that the end of the optical fiber output device 200 is tightly abutted against the limiting step 120 in the connecting channel 110, thereby ensuring the sealed connection between the optical fiber output device 200 and the welding gun 100, and can effectively prevent external dust and other debris from entering the welding gun 100 through the connection between the end of the optical fiber output device 200 and the limiting step 120 in the connecting channel 110, thereby further improving the safety of the welding gun 100.
[0037] It should be noted that it is extremely important to avoid dust or debris in the optical path of the welding gun 100, that is, in the connecting channel 110. In the process of laser welding using the welding gun 100, the laser beam energy is extremely high. If there is dust or debris in the optical path, these impurities may absorb the laser energy, and the local temperature rises instantly, resulting in explosion or combustion, forming spatter, causing serious damage to the eyes and skin of the operator, and even causing fire accidents; moreover, the dust and debris in the optical path may be adsorbed on optical lenses, such as focusing lenses, reflectors, etc., resulting in a decrease in the transmittance of the lenses, affecting the transmission efficiency and focusing quality of the laser, thereby reducing the welding effect, such as causing uneven welding points, increased weld defects, etc., and in the long run, expensive optical components may be damaged and maintenance costs increased; furthermore, laser welding relies on high-precision beam control and energy transmission, and any slight shielding or scattering will affect the precise positioning and energy distribution of the laser, resulting in uneven energy absorption at the welding part, affecting the welding depth, width and appearance quality, and in severe cases, leading to welding failure and product scrapping.
[0038] In addition, when dust or debris appears in the optical path of the welding gun 100, it is necessary to clean it in time. Frequent cleaning and maintenance of the optical path will interrupt the production process and affect production efficiency. Keeping the optical path clean can reduce downtime for maintenance and ensure continuous and efficient operation of the production line. In addition, impurities in the optical path will accelerate the aging of optical components and shorten the service life of the equipment. Reducing the probability of dust or debris appearing in the optical path can significantly extend the overall service life of the laser equipment and reduce the frequency and cost of replacing accessories.
[0039] Therefore, whether from the perspective of safety, quality, efficiency or economy, it is crucial to ensure the cleanliness of the optical path inside the welding gun 100 and avoid the presence of dust and debris.
[0040] In some embodiments, the wear-resistant sleeve 300 and the sealing ring 400 are integrally formed. On the one hand, when the end of the optical fiber output device 200 is inserted into the connecting channel 110 of the welding gun 100, there is no need to align the sealing ring 400 with the limiting step 120 in the connecting channel 110, thereby improving the connection efficiency between the optical fiber output device 200 and the welding gun 100. On the other hand, it can reduce the processing steps of the wear-resistant sleeve 300 and the sealing ring 400, improve the processing efficiency of parts, and reduce production costs. Of course, in other embodiments of the present invention, the sealing ring 400 and the wear-resistant sleeve 300 can be processed separately, and then the wear-resistant sleeve 300 and the sealing ring 400 are positioned and bonded into one body to facilitate the connection and installation of the optical fiber output device 200 and the welding gun 100.
[0041] In some embodiments, a limiting convex ring 320 is provided on the end surface of the wear-resistant sleeve 300 away from the optical fiber output device 200, the outer diameter of the limiting convex ring 320 is smaller than the inner diameter of the limiting step 120, and the sealing ring 400 is sleeved outside the limiting convex ring 320; by providing the limiting convex ring 320, it is convenient to limit the relative position of the sealing ring 400 and the wear-resistant sleeve 300, and it can effectively prevent the sealing ring 400 from being offset from the wear-resistant sleeve 300 when subjected to external force, so as to ensure the sealing effect when the end of the optical fiber output device 200 pushes the wear-resistant sleeve 300 and drives the wear-resistant sleeve 300 and the limiting step 120 to jointly squeeze the sealing ring 400; of course, in other embodiments of the utility model, a limiting groove corresponding to the sealing ring 400 can be provided on the end surface of the wear-resistant sleeve 300 away from the optical fiber output device 200 to limit the relative position of the sealing ring 400 and the wear-resistant sleeve 300.
[0042] In some embodiments, the cross-sectional shape of the sealing ring 400 when not squeezed is circular, so as to ensure the uniformity of the pressure of the sealing ring 400 on the contact surfaces of the wear-resistant sleeve 300 and the limiting step 120 when squeezed, thereby ensuring the sealing effect provided by the sealing ring 400; of course, in other embodiments of the utility model, the cross-sectional shape of the sealing ring 400 when not squeezed can also be set to a shape, such as an ellipsoid, a circular ring, etc., which is used to ensure the sealing of the connection between the end of the optical fiber output device 200 and the welding gun 100.
[0043] In some embodiments, a conical avoidance groove 330 is provided between the end of the wear-resistant sleeve 300 close to the optical fiber output device 200 and the inner wall of the wear-resistant sleeve 300, so that the opening diameter of the wear-resistant sleeve 300 close to the optical fiber output device 200 is larger than the end diameter of the optical fiber output device 200, which facilitates the wear-resistant sleeve 300 to be sleeved on the end of the optical fiber output device 200 and improves the installation efficiency of the wear-resistant sleeve 300; of course, in other embodiments of the utility model, other structures may be further provided on the wear-resistant sleeve 300, such as guide grooves, etc., to facilitate the wear-resistant sleeve 300 to be sleeved on the end of the optical fiber output device 200.
[0044] In some embodiments, the wear-resistant sleeve 300 is made of Teflon, the formal name of which is polytetrafluoroethylene (PTFE), which is a high-performance artificial synthetic polymer material known as the "king of plastics"; the surface of Teflon is extremely smooth, has extremely low surface tension, and is almost non-sticky to any substance. Moreover, Teflon has excellent heat resistance, can remain stable in the temperature range of -268°C to 260°C, can withstand high temperatures of up to 300°C in a short period of time, and can effectively adapt to complex usage scenarios. In addition, Teflon is almost not corroded by any chemical substances, including strong acids, strong alkalis, strong oxidants, etc., and exhibits extremely high chemical inertness, and its friction coefficient is extremely low, only about 0.04, which is the lowest among all solid materials, and the probability of wear is extremely low. It is a very suitable material for the wear-resistant sleeve 300 and can effectively extend its service life; of course, in other embodiments of the utility model, the wear-resistant sleeve 300 can also be made of other materials with excellent wear resistance.
[0045] In some embodiments, the limiting step 120 is provided with an extrusion groove 121 corresponding to the sealing ring 400 on the end face close to the optical fiber output device 200, so as to facilitate the contact area between the sealing ring 400 and the limiting step 120, improve the contact sealing between the sealing ring 400 and the limiting step 120, and reduce the probability of the installation position of the sealing ring 400 being offset; of course, in other embodiments of the present invention, the limiting step 120 can also be provided with a boss or other structure to increase the contact area with the sealing ring 400 and avoid the sealing ring 400 from being offset during the installation process.
[0046] In some embodiments, the sealing ring 400 is made of Teflon material, so that the sealing ring 400 has the same excellent properties as the wear-resistant sleeve 300, such as non-stickiness, high temperature resistance, and chemical stability; of course, in other embodiments of the utility model, the sealing ring 400 can also be made of other materials with excellent wear resistance and good sealing effect.
[0047] In some embodiments, a mounting screw hole is provided on the side wall of the optical fiber output device 200, and a screw is passed through the gun body of the welding gun 100, and the screw is passed through the mounting screw hole by threaded cooperation; after the optical fiber output device 200 is passed into the connecting channel 110 of the welding gun 100, the optical fiber output device 200 and the welding gun 100 are fixedly connected by passing the screw through the threaded cooperation, which is convenient to operate and reliable in connection; of course, in other embodiments of the utility model, other limiting components can also be provided on the welding gun 100 to limit the relative position of the optical fiber output device 200 and the welding gun 100.
[0048] Example 2
[0049] The utility model also provides a handheld welding gun, which can be set to different sizes or usage powers according to different usage scenarios, including the welding gun sealing connection assembly described in Example 1. The handheld welding gun has all the beneficial effects of the welding gun sealing connection assembly, which will not be described in detail here.
[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A welding gun sealing connection assembly, used for sealing connection between an optical fiber output device (200) and a welding gun (100), characterized in that: include: A wear-resistant sleeve (300) is sleeved on the interface of the optical fiber output device (200), an annular boss (310) is provided on the inner wall of the wear-resistant sleeve (300), and the inner diameter of the annular boss (310) is smaller than the interface diameter of the optical fiber output device (200); A sealing ring (400) is arranged on the end surface of the wear-resistant sleeve (300) away from the optical fiber output device (200); When the optical fiber output device (200) is inserted into the communication channel (110) of the welding gun (100), it can press the wear-resistant sleeve (300) to move closer to the limiting step (120) in the communication channel (110), so that the wear-resistant sleeve (300) and the limiting step (120) can jointly squeeze the sealing ring (400).
2. The welding gun sealing connection assembly according to claim 1, characterized in that: The wear-resistant sleeve (300) and the sealing ring (400) are integrally formed.
3. The welding gun sealing connection assembly according to claim 1, characterized in that: A limiting convex ring (320) is provided on the end surface of the wear-resistant sleeve (300) away from the optical fiber output device (200), the outer diameter of the limiting convex ring (320) is smaller than the inner diameter of the limiting step (120), and the sealing ring (400) is sleeved outside the limiting convex ring (320).
4. The welding gun sealing connection assembly according to claim 1, characterized in that: The cross-sectional shape of the sealing ring (400) when not squeezed is circular.
5. The welding gun sealing connection assembly according to claim 1, characterized in that: A conical avoidance groove (330) is provided between the end of the wear-resistant sleeve (300) close to the optical fiber output device (200) and the inner wall of the wear-resistant sleeve (300).
6. The welding gun sealing connection assembly according to claim 1, characterized in that: The wear-resistant sleeve (300) is made of Teflon material.
7. The welding gun sealing connection assembly according to claim 1, characterized in that: An extrusion groove (121) corresponding to the sealing ring (400) is formed on the end surface of the limiting step (120) close to the optical fiber output device (200).
8. The welding gun sealing connection assembly according to claim 1, characterized in that: The sealing ring (400) is made of Teflon material.
9. The welding gun sealing connection assembly according to any one of claims 1 to 8, characterized in that: A mounting screw hole is provided on the side wall of the optical fiber output device (200), a screw is passed through the gun body of the welding gun (100), and the screw is passed through the mounting screw hole through threaded engagement.
10. A handheld welding gun, characterized in that: The invention comprises a welding gun sealing connection assembly as claimed in any one of claims 1 to 9.