Welding gun cleaning device and vibration welding gun
By designing a dynamic pressure difference between an airtight chamber and a damping chamber on the welding torch to drive piston vibration, the problems of large space occupation and interference in the welding torch cleaning device are solved, achieving a self-cleaning effect and improving cleaning efficiency and reliability.
Patent Information
- Application Number
- CN202520071101.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-13
AI Technical Summary
In the existing technology, welding torch cleaning devices require an additional reamer device, which occupies a large space and is prone to interference in narrow positions. The cleaning effect is affected by the deviation of the robot welding torch components and the wear of the reamer, which may lead to damage to the machine parts.
Design a welding torch cleaning device that divides the cylinder into an airtight chamber and a damping chamber by setting a piston inside the cylinder. The dynamic pressure difference is used to make the piston move up and down and reciprocate, which drives the nozzle to vibrate and achieve self-cleaning, avoiding interference from additional devices and the need for alignment.
It achieves self-cleaning in narrow spaces, avoids interference from additional devices, has a simple structure, saves space, and does not require alignment with the cleaning position, thus improving cleaning efficiency and reliability.
Smart Images
Figure CN223670580U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of welding gun cleaning, especially relates to a welding gun cleaning device and vibrating welding gun. BACKGROUND
[0002] The front end of the robot welding gun is generally a welding gun body, which usually comprises a welding elbow, a welding connecting rod, an electrically conductive nozzle and a nozzle connector installed at the end of the welding elbow and a nozzle installed on the nozzle connector, the nozzle is sleeved outside the electrically conductive nozzle, the electrically conductive nozzle is used for leading current into a welding wire inserted in the electrically conductive nozzle, and the nozzle is used for spraying protective gas. In the gas shielded welding process, welding spatter can quickly adhere to the outer surface of the electrically conductive nozzle, the inner surface of the nozzle, the gas protection sleeve and the flow divider and other vulnerable devices, and the protective gas flow passing through the gas nozzle can be affected by the deposited welding slag, so that air can also reach the welding position, thereby affecting the protective gas flow, for example, reducing the purity of the carbon dioxide protective gas flow, and further affecting the stability of the electric arc in the welding gun and the weld quality of the welded workpiece, and the nozzle, the flow divider and other devices are more likely to be damaged; in addition, after a period of accumulation, the welding spatter can easily block the gas flow channel of the protective gas in the nozzle, thereby affecting the welding quality.
[0003] At present, the welding spatter is cleaned by a reamer cleaning method, that is, the reamer is inserted into the gap between the nozzle and the electrically conductive nozzle, the reamer is driven to rotate by a motor, and the adhered welding slag is scraped off by the blade surface of the reamer. However, this method has the following defects: 1. A set of reamer device needs to be additionally provided to clean the welding gun, which occupies a large space, and if the robot welding gun is installed in a narrow working position, the reamer device is easy to interfere with the robot welding gun, and it is difficult to clean the welding gun; 2. During cleaning, the welding gun needs to be aligned with the position of the reamer, so programming alignment is required in the robot welding system, and since various uncertainties exist in the production process, such as deviation of the welding gun assembly, change of the position of the reamer itself, wear and deformation of the reamer, etc., which will affect the cleaning effect, and even cause damage to the machine parts during the strong cleaning process. SUMMARY
[0004] To solve the above technical problems, the utility model provides a welding gun cleaning device and vibrating welding gun.
[0005] The utility model adopts the technical scheme in the independent patent claim: a welding gun cleaning device, which is installed between the welding gun connecting rod and the nozzle, the device comprises a cylinder body and a piston sliding up and down in the cylinder body, the cylinder body is fixedly connected with the welding gun connecting rod, the piston is fixedly connected with the nozzle, the piston separates the inner cavity of the cylinder body into an airtight chamber and a damping chamber, a dynamic pressure difference changing from a positive value to a negative value is arranged between the airtight chamber and the damping chamber, and the dynamic pressure difference drives the piston to move up and down in the cylinder body to drive the nozzle to vibrate.
[0006] Optionally, the airtight chamber is located at the upper part of the cylinder body, and the damping chamber is located at the lower part of the cylinder body.
[0007] Optionally, the airtight chamber is connected with a high-pressure fluid source, and the elastic member in compression state is arranged in the damping chamber.
[0008] Optionally, the cylinder body is provided with a channel communicating the airtight chamber with the outside, and the piston closes or opens the channel by moving up and down.
[0009] Optionally, the channel comprises a valve hole formed on the wall of the cylinder body, and the piston is in close contact with the inner wall of the cylinder body.
[0010] Optionally, the inner wall of the cylinder body is provided with a step, the small-diameter end of the step is the inner wall of the airtight chamber, the large-diameter end of the step is the inner wall of the damping chamber, the piston is in close contact with the inner wall of the airtight chamber, and the gap between the piston and the inner wall of the damping chamber forms the channel, and the damping chamber is in communication with the outside.
[0011] Optionally, the inner wall of the cylinder body is provided with a groove in the circumferential direction, a sealing ring is arranged in the groove, the sealing ring is arranged outside the groove, the outer diameter of the piston is greater than the inner diameter of the sealing ring and smaller than the diameter of the inner wall of the cylinder body, the gap between the piston and the inner wall of the damping chamber forms the channel, and the damping chamber is in communication with the outside.
[0012] Optionally, the end of the piston close to the sealing ring is provided with a chamfer.
[0013] Optionally, the upper end of the cylinder body is fixedly provided with an end cover, the end cover is fixedly sleeved on the welding gun connecting rod, and the piston is fixedly sleeved on the nozzle.
[0014] Correspondingly, the application also provides a vibrating welding gun, which comprises a welding gun body, the welding gun body comprises a welding gun connecting rod, a conductive nozzle arranged at the end of the welding gun connecting rod, a nozzle sleeved on the conductive nozzle, and the above-mentioned welding gun cleaning device, the cylinder body is fixedly connected with the welding gun connecting rod, and the piston is fixedly connected with the nozzle.
[0015] The utility model discloses an advantageous effect that is: the utility model provides a welding torch cleaning device, set up piston in cylinder body and divide cylinder body into airtight chamber and damping chamber, set up dynamic pressure in airtight chamber and damping chamber, and dynamic pressure difference between both circulates change between positive value and negative value, and the dynamic pressure difference of positive value is that the pressure of airtight chamber is greater than the pressure of damping chamber, and the dynamic pressure difference of negative value is that the pressure of airtight chamber is less than the pressure of damping chamber, when the dynamic pressure difference between airtight chamber and damping chamber is positive value, airtight chamber drives piston to move to damping chamber direction, when the dynamic pressure difference between airtight chamber and damping chamber is negative value, damping chamber drives piston to move to airtight chamber direction, and this circulates repeatedly, and piston reciprocatingly moves on cylinder body, thereby drive and repeatedly move up and down with fixed connection nozzle to vibrate, thereby make welding slag adhered on nozzle vibrate and fall, and the purpose of cleaning welding slag is achieved, thereby solve the problem that nozzle is blocked by welding slag.
[0016] In another aspect, the utility model also provides an arc welding torch, which integrates the welding torch cleaning device and the welding torch body, and can realize self-cleaning of the welding torch without additional cleaning mechanism, thus being simple in structure and saving space. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be described further below in combination with the drawings and examples, and the drawings are as follows:
[0018] Figure 1 It is the structure schematic diagram of the welding torch cleaning device provided by the utility model;
[0019] Figure 2 It is the explosion drawing of the welding torch cleaning device provided by the utility model;
[0020] Figure 3 It is the structure schematic diagram of one embodiment of the welding torch cleaning device provided by the utility model;
[0021] Figure 4 It is the structure schematic diagram of another embodiment of the welding torch cleaning device provided by the utility model;
[0022] Figure 5 It is the structure schematic diagram of still another embodiment of the welding torch cleaning device provided by the utility model;
[0023] In the drawing: 1-spring, 2-end cover, 2.1-air flow interface, 3-cylinder body, 3.1-airtight chamber, 3.2-damping chamber, 3.3-valve hole, 3.4-channel, 3.5-groove, 4-center shaft sleeve, 5-nozzle, 6-sealing ring, 7-welding torch connecting rod, 8-piston, 9-shaft sleeve sealing ring, 10-conducting nozzle. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0025] In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0026] In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of", "several" is two or more.
[0027] As Figures 1-5As shown, the utility model provides a kind of welding torch cleaning device, the device is installed between welding torch connecting rod 7 and nozzle 5, the device includes cylinder body 3 and the piston 8 of being arranged in cylinder body 3 up and down sliding, cylinder body 3 is fixedly connected with welding torch connecting rod 7, piston 8 is fixedly connected with nozzle 5, piston 8 separates the inner cavity of cylinder body 3 into airtight chamber 3.1 and damping chamber 3.2, between airtight chamber 3.1 and damping chamber 3.2, there is the dynamic pressure difference of cyclic variation from positive value to negative value, the dynamic pressure difference drives piston to reciprocate in cylinder to drive nozzle to vibrate.The dynamic pressure difference of positive value in this embodiment refers to the pressure of airtight chamber is greater than the pressure of damping chamber, the dynamic pressure difference of negative value refers to the pressure of airtight chamber is less than the pressure of damping chamber, when airtight chamber and damping chamber are the dynamic pressure difference of positive value, airtight chamber drives piston to move to the direction of damping chamber, when airtight chamber and damping chamber are the dynamic pressure difference of negative value, damping chamber drives piston to move to the direction of airtight chamber, airtight chamber and damping chamber are equipped with dynamic pressure, and dynamic pressure can be provided by the way of passing into fluid or setting compression spring.
[0028] In the utility model, piston separates the inner cavity of cylinder body into two chambers, can be upper chamber as airtight chamber, lower chamber as damping chamber, can be upper chamber as damping chamber, lower chamber as airtight chamber, in an embodiment, as shown in Figures 1-5 Airtight chamber is located in the upper portion of cylinder body, and damping chamber is located in the lower portion of cylinder body.
[0029] In an embodiment, as shown in Figures 1-5 In the embodiment, airtight chamber is provided with dynamic pressure by high-pressure fluid (preferably high-pressure gas), and damping chamber is provided with dynamic pressure by compression elastic member, that is, airtight chamber is connected with a high-pressure fluid source, damping chamber is provided with compression elastic member, and the elastic member preferably uses spring 1.When the pressure in airtight chamber is greater than the pressure in damping chamber, piston moves to the direction of damping chamber to continue to compress spring, so that the pressure in damping chamber gradually increases, when the pressure in damping chamber is greater than the pressure in airtight chamber, spring generates reverse thrust to push piston to move to the direction of airtight chamber, until the pressure in airtight chamber is greater than the pressure in damping chamber, piston moves to the direction of damping chamber again, and the cycle drives piston to reciprocate, so that nozzle vibrates.Moreover, damping chamber is provided with compression spring, and there is inherent frequency, and the fluid filled in damping chamber and airtight chamber is an elastic air column, which can expand and compress, and there is also inherent frequency, after mutual influence between the two, initial excitation is generated, if the frequency of air column and the inherent frequency of compression spring are coupled, resonance is caused, and nozzle vibration intensity can be further improved.
[0030] In an embodiment, as shown in Figures 1-5As shown, the cylinder 3 is provided with a passage 3.4 connecting the air-tight chamber 3.1 with the outside, and the piston 8 closes or opens the passage 3.4 by moving up and down, so that the piston can automatically move back and forth by continuously feeding high-pressure fluid into the air-tight chamber. In the initial state, the piston closes the passage under the action of the elastic member, and the air-tight chamber is not connected with the outside. When high-pressure fluid is fed into the air-tight chamber, the pressure in the air-tight chamber gradually increases. When the pressure in the air-tight chamber is greater than the pressure in the damping chamber, the piston moves to the damping chamber. When the piston moves to open the passage, the air-tight chamber is connected with the outside through the passage, the pressure in the air-tight chamber is released, and the pressure decreases. At this time, the spring in the damping chamber is compressed by the piston, and the pressure in the damping chamber gradually increases. When the reverse pushing force generated by the compression of the damping chamber by the piston is greater than the pressure of the air-tight chamber, the piston moves in the opposite direction to the air-tight chamber until the passage is closed, and the air-tight chamber is recharged for the next cycle.
[0031] The form of the passage can be various. In one embodiment, as shown in Figure 3 The passage includes a valve hole 3.3 opened on the wall of the cylinder. The piston is in close contact with the inner wall of the cylinder, and the outer wall of the piston forms a close sliding fit with the inner wall of the cylinder to prevent gas leakage. In this embodiment, a valve hole connected with the outside is opened at a corresponding position on the wall of the cylinder. In the initial position, the outer wall of the piston blocks the valve hole under the action of the compressed spring in the damping chamber. At this time, the air-tight chamber is not connected with the outside, and high-pressure fluid is fed into the air-tight chamber. When the pressure in the air-tight chamber increases, it pushes the piston to move to the damping chamber. When the end surface of the piston moves to the position of the valve hole, the valve hole is connected with the air-tight chamber, and the pressure in the air-tight chamber is released. At this time, the damping chamber is compressed, generating a reverse damping force to push the piston to move in the opposite direction, and the valve hole is closed again by the piston.
[0032] In another embodiment, as shown in Figure 4As shown, the inner wall of the cylinder is provided with a step, the small-diameter end of the step is the inner wall of the air-tight chamber, the large-diameter end of the step is the inner wall of the damping chamber, the piston is in close contact with the inner wall of the air-tight chamber, the gap between the piston and the inner wall of the damping chamber forms the passage 3.4, and the damping chamber is in communication with the outside. In this embodiment, the inner wall of the cylinder is designed in a stepped shape, the small-diameter end is the inner wall of the air-tight chamber, the inner wall of the air-tight chamber is in close sliding fit with the outer wall of the piston to prevent gas leakage, the large-diameter end is the inner wall of the damping chamber, the gap between the piston and the inner wall of the damping chamber forms the passage, the air release groove of the air-tight chamber is in communication with the outside, and the small-diameter end of the step is a certain distance away from the top, so that the piston can move in the air-tight chamber. In the initial position, the piston is located in the air-tight chamber under the action of the compressed spring in the damping chamber, the passage is closed, the air-tight chamber is not in communication with the outside at this time, high-pressure fluid is introduced into the air-tight chamber, the pressure in the air-tight chamber gradually increases, the piston is pushed to move towards the damping chamber when the pressure in the air-tight chamber increases, the gap between the piston and the damping chamber is in communication with the air-tight chamber when the end face of the piston moves into the damping chamber, the pressure in the air-tight chamber is released, the damping chamber is compressed at this time, and the reverse damping force is generated to push the piston to move reversely, the passage is closed again by the piston when the piston moves into the air-tight chamber.
[0033] In still another embodiment, as shown in Figure 5 the inner wall of the cylinder is provided with a circumferential groove 3.5, a sealing ring 6 is installed in the groove, the sealing ring 6 extends out of the groove, the outer diameter of the piston is greater than the inner diameter of the sealing ring and smaller than the diameter of the inner wall of the cylinder, the gap between the piston and the inner wall of the damping chamber forms the passage 3.4, and the damping chamber is in communication with the outside. In this embodiment, the sealing ring is a rubber ring, the rubber ring is fixed in the groove of the inner wall of the cylinder, the rubber ring slightly protrudes from the inner wall of the cylinder, the edge of the ring end face of the piston is slightly larger than the inner diameter of the rubber ring, the piston is in close contact with the sealing ring to close the passage in the initial position under the action of the compressed spring in the damping chamber, the air-tight chamber is not in communication with the outside at this time, high-pressure fluid is introduced into the air-tight chamber, the pressure in the air-tight chamber gradually increases, the piston is pushed to move towards the damping chamber when the pressure in the air-tight chamber increases, the gap between the piston and the damping chamber is in communication with the air-tight chamber when the piston moves to separate from the sealing ring, the pressure in the air-tight chamber is released, the damping chamber is compressed at this time, and the reverse damping force is generated to push the piston to move reversely, the passage is closed again by the piston when the piston moves to be in close contact with the sealing ring.
[0034] In one embodiment, as shown in Figure 5 the end close to the sealing ring 6 of the piston 8 is provided with a chamfer, so that the contact area of the piston and the sealing ring is increased, and the service life of the sealing ring is improved.
[0035] In one embodiment, as shown in Figures 1-5 the upper end of the cylinder is fixedly provided with an end cover 2, the end cover is fixedly sleeved on the welding gun connecting rod 7, and the piston 8 is fixedly sleeved on the nozzle 5. Specifically, the lower end of the piston protrudes out of the cylinder and is sleeved on the nozzle.
[0036] Correspondingly, the application also provides a vibrating welding gun, as shown in the drawings, comprising a welding gun body, the welding gun body comprising a welding gun connecting rod 7, a conductive nozzle 10 mounted at the end of the welding gun connecting rod, a nozzle 5 sleeved outside the conductive nozzle, and the above-mentioned welding gun cleaning device, the cylinder body 3 is fixedly connected with the welding gun connecting rod 7, and the piston 8 is fixedly connected with the nozzle 5. Figures 1-5 More preferably, the welding gun cleaning device further comprises a center shaft sleeve 4 made of insulating material, the center shaft sleeve is fixedly sleeved on the welding gun connecting rod 7, and the piston is slidingly sleeved outside the center shaft sleeve.
[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should belong to the protection scope of the claims attached to the present application.
Claims
1. A torch cleaning device, characterized by, The device is installed between the welding gun connecting rod and the nozzle, the device comprises a cylinder and a piston slidingly arranged in the cylinder, the cylinder is fixedly connected with the welding gun connecting rod, the piston is fixedly connected with the nozzle, the piston separates the inner cavity of the cylinder into a gas-tight chamber and a damping chamber, a dynamic pressure difference which cyclically changes from a positive value to a negative value is provided between the gas-tight chamber and the damping chamber, the dynamic pressure difference drives the piston to reciprocate in the cylinder to drive the nozzle to vibrate.
2. The torch purging device of claim 1, wherein, The gas-tight chamber is located at the upper part of the cylinder, and the damping chamber is located at the lower part of the cylinder.
3. The torch cleaning device of claim 1, wherein, The gas-tight chamber is connected with a high-pressure fluid source, and the damping chamber is provided with an elastic member in a compressed state.
4. Torch cleaning device according to claim 1 or 2 or 3, characterized in that A channel is provided on the cylinder and communicates the gas-tight chamber with the outside, and the piston closes or opens the channel by moving up and down.
5. The torch cleaning device of claim 4, wherein, The channel comprises a valve hole provided on the wall of the cylinder, and the piston is in close contact with the inner wall of the cylinder.
6. The torch cleaning device of claim 4, wherein, The inner wall of the cylinder is provided with a step, the small-diameter end of the step is the inner wall of the gas-tight chamber, the large-diameter end of the step is the inner wall of the damping chamber, the piston is in close contact with the inner wall of the gas-tight chamber, and the gap between the piston and the inner wall of the damping chamber forms the channel, and the damping chamber is in communication with the outside.
7. The torch cleaning device of claim 4, wherein, A groove is provided on the inner wall of the cylinder in the circumferential direction, a sealing ring is mounted in the groove, the sealing ring is provided outside the groove, the outer diameter of the piston is greater than the inner diameter of the sealing ring and less than the diameter of the inner wall of the cylinder, the gap between the piston and the inner wall of the damping chamber forms the channel, and the damping chamber is in communication with the outside.
8. The torch cleaning device of claim 7, wherein, The end of the piston close to the sealing ring is provided with a chamfer.
9. The torch cleaning device of claim 2, wherein, An end cover is fixedly installed at the upper end of the cylinder, the end cover is fixedly sleeved outside the welding gun connecting rod, and the piston is fixedly sleeved outside the nozzle.
10. A vibration welding gun comprising a welding gun body, the welding gun body comprising a welding gun link, a conductive tip mounted at the end of the welding gun link, and a nozzle sleeve fitted over the conductive tip, characterized in that, The welding gun body further comprises the welding gun cleaning device according to any one of claims 1-9, the cylinder is fixedly connected with the welding gun connecting rod, and the piston is fixedly connected with the nozzle.