Automatic welding wire conveying device and welding equipment

Abstract

The invention discloses an automatic welding wire conveying device and welding equipment. The automatic welding wire conveying device comprises a guide part used for straightening a welding wire and a welding wire driving assembly used for conveying the welding wire. The welding wire driving assembly comprises a driving wheel driving a welding wire to move and a driven wheel matched with the driving wheel to clamp the welding wire, and the driven wheel is connected with a first adjusting assembly driving the driven wheel to move. The first adjusting assembly comprises a supporting seat, a sliding groove for containing the sliding block is formed in the supporting seat, a telescopic elastic piece used for pushing the sliding block to move is arranged in the sliding groove, and a center shaft of the driven wheel is connected with the sliding block. The welding wire feeding device has the beneficial effects that the distance between the driven wheel and the driving wheel is adjusted through the first adjusting assembly, so that the welding wire feeding device can be used for clamping and feeding welding wires with different diameters, and the overall application range is expanded.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to an automated welding wire feeding device and welding equipment. Background Technology

[0002] Welding is a common joining method in fields such as machinery, chemical engineering, and construction, and welding quality is fundamental to product and project quality. As industrial manufacturing demands increasing efficiency, quality, and consistency, automated welding (such as robotic welding and specialized automated welding machines) has become a core process in modern manufacturing industries (automotive, shipbuilding, pressure vessels, construction machinery, aerospace, etc.). Its core advantages lie in high repeatability, stable welding parameter control, and reduced manpower requirements.

[0003] Welding wire is an essential component for welding and is typically produced and transported in coil form. In automated welding processes, it needs to be straightened and fed along a fixed route.

[0004] The patent with announcement number "CN202622144U" discloses "an automated welding wire feeding device", which realizes the automated feeding of welding wire. However, the distance between the active guide wheel and the driven guide wheel for feeding welding wire is fixed, and it can only adapt to feeding one type or several types of welding wire with similar diameters, thus having a narrow range of applications. Summary of the Invention

[0005] The purpose of this invention is to provide an automated welding wire feeding device and welding equipment that can be adapted to the automatic feeding of various sizes of welding wire.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An automated welding wire feeding device includes a guide for straightening welding wire and a welding wire driving assembly for feeding welding wire; the welding wire driving assembly includes a drive wheel for moving welding wire and a driven wheel that cooperates with the drive wheel to clamp the welding wire, and the driven wheel is connected to a first adjustment assembly for driving its movement.

[0007] Preferably, the first adjustment component includes a support base, on which a sliding groove for accommodating a slider is provided, and a telescopic elastic element for pushing the slider to move is provided in the sliding groove, and the central shaft of the driven wheel is connected to the slider.

[0008] Preferably, the telescopic elastic element includes a sleeve and a telescopic rod. The sleeve is fixedly connected to the inner wall of the sliding groove. A spring is provided inside the sleeve. The spring is connected to one end of the telescopic rod, and the other end of the telescopic rod is connected to the slider.

[0009] Preferably, a pressure sensor is also provided between the spring and the bottom of the sleeve.

[0010] Preferably, this application further includes a housing, the housing having a welding wire inlet communicating with a guide member, the housing also having a tapered portion, the tapered portion having a welding wire outlet corresponding to the welding wire inlet, and the welding wire drive assembly being installed inside the housing.

[0011] Preferably, the welding wire inlet of the housing is provided with a locking interface, the locking interface is provided with a rotating locking groove, and the guide is provided with a locking lug that cooperates with the rotating locking groove.

[0012] Preferably, the guide is a multi-stage telescopic sleeve, and the extension length of the multi-stage telescopic sleeve is not less than the length of the shell.

[0013] Preferably, the housing is further provided with a positioning device to prevent wire skipping. The positioning device includes at least three clamping wheels surrounding the outside of the welding wire. The clamping wheels are connected to a second adjusting component that drives them to move. The second adjusting component has the same structure as the first adjusting component. The clamping wheels are provided with chamfers to facilitate the entry of the welding wire.

[0014] Preferably, this application further includes a fixed wheel installed on the inner wall of the housing, the fixed wheel being provided with a traction rope, the traction rope passing through and extending out of the housing sequentially from the outside of the clamping wheel shaft.

[0015] Preferably, this application also discloses a welding device, including the aforementioned automated welding wire feeding device.

[0016] The beneficial effects of this invention are as follows: 1. By adjusting the distance between the driven wheel and the driving wheel through the first adjustment component, this device can be used to clamp and feed welding wires of different diameters, thus expanding the overall applicability.

[0017] 2. When feeding the welding wire, the welding wire abuts between the driving wheel and the driven wheel. The telescopic elastic element pushes the slider to slide along the sliding groove. During this process, the rebound force of the telescopic elastic element ensures that the driven wheel and the driving wheel have a squeezing force on the welding wire, and thus have sufficient friction. When the driving wheel rotates, it can drive the welding wire to be fed forward.

[0018] 3. The welding wire is clamped by the positioning device to avoid jumping phenomena that may occur when the welding wire is too thin (which is prone to shaking) or too thick (which has greater internal stress). The welding wire is restricted to the conveying path, which improves the reliability of the equipment. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 for Figure 2 Sectional view A-A; Figure 4 This is a schematic diagram of the assembly of the guide component and the housing; Figure 5 for Figure 1 B-B sectional view (shell not shown); Figure 6 In another embodiment Figure 1 B-B sectional view.

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Example 1 like Figure 1 , Figure 2 and Figure 4 As shown, this embodiment discloses an automated welding wire feeding device, including a housing 1. The upper part of the housing 1 is provided with a welding wire inlet 3, and the lower part of the housing 1 is also connected to a tapered part 2. The tapered part 2 is provided with a welding wire outlet corresponding to the upper and lower parts of the welding wire inlet 3. A welding wire drive assembly for feeding welding wire 19 is installed inside the housing 1. The welding wire inlet 3 is connected to a guide 6 for straightening the welding wire 19.

[0023] The welding wire drive assembly includes a drive wheel 10 that moves the welding wire 19 and a driven wheel 11 that cooperates with the drive wheel 10 to clamp the welding wire 19. In this embodiment, a drive mechanism 8, which is a miniature DC motor, is also provided inside the housing 1. The power supply is an external power source to ensure continuous power supply. The miniature DC motor is connected to the shaft on the drive wheel 10 via a transmission belt 9. The two ends of the shaft of the drive wheel 10 are connected to the front and rear side walls of the housing 1 via bearing assemblies to ensure that the drive wheel 10 can rotate freely.

[0024] like Figure 3 As shown, the driven wheel 11 is connected to a first adjustment component 20. The first adjustment component 20 enables the lateral movement of the driven wheel 11, thereby adjusting the distance between the driven wheel 11 and the driving wheel 10. The first adjustment component 20 includes a support base 13, on which a sliding groove 14 is provided to accommodate a slider 16. A telescopic elastic element 15 for pushing the slider 16 is provided in the sliding groove 14. The central shaft 12 of the driven wheel 11 is connected to the slider 16. When no external force is applied, the telescopic elastic element 15 supports the slider 16 to move along the sliding groove 14 to the end close to the driving wheel 10, thereby driving the driven wheel 11 to the position closest to the driving wheel 10.

[0025] To ensure the stability of the slider 16 during movement, two support bases 13, two sliders 16, and two telescopic elastic elements 15 are symmetrically arranged. Stop structures can also be provided on the front and rear sides of the sliding groove 14 to stop the slider 16 and effectively prevent it from detaching from the sliding groove 14.

[0026] To facilitate the movement of the slider 16, freely rotatable balls 18 are provided on the upper and lower side walls of the sliding groove 14, that is, on the side walls parallel to the sliding direction of the slider 16. The balls 18 abut against the top and bottom surfaces of the slider 16, achieving point-to-surface contact between the two, ensuring the connection accuracy of the slider 16 within the sliding groove 14, and preventing the slider 16 from wobbling up and down.

[0027] A bearing assembly 17 can also be provided on the slider 16. The central shaft 12 of the driven wheel 11 and the slider 16 are rotatably connected through the bearing assembly 17, ensuring that the driven wheel 11 can rotate relative to the slider 16.

[0028] The telescopic elastic element 15 includes a sleeve and a telescopic rod. The sleeve is vertically connected to the side wall of the sliding groove 14. One end of the telescopic rod is sleeved inside the sleeve and connected to the sleeve by a spring. The other end of the telescopic rod is vertically connected to the slider 16 to achieve elastic support for the slider 16.

[0029] The telescopic elastic element 15 also includes a pressure sensor. The pressure sensor is positioned between the spring and the sleeve. When the slider 16 presses against the telescopic elastic element 15, the pressure sensor is compressed and measures the pressure. In this embodiment, the feeding device can also be equipped with a controller and an alarm device, electrically connected to the pressure sensor, to process the detection signal from the pressure sensor; when the detected pressure disappears, the alarm device is activated to send a signal, reminding personnel to check whether the welding wire 19 has come out of the clamp between the drive wheel 10 and the driven wheel 11, or whether the welding wire 19 has been used up, thereby improving the reliability of the welding process.

[0030] The welding wire 19 enters the housing 1 through the welding wire inlet 3, then passes through the gap between the drive wheel 10 and the driven wheel 11, and extends out from the welding wire outlet at the end of the tapered part 2. When the welding wire 19 passes through the gap between the drive wheel 10 and the driven wheel 11, the welding wire 19, whose diameter is larger than the aforementioned gap, presses against the driven wheel 11 and moves laterally, driving the slider 16 to move along the sliding groove 14 and squeeze the telescopic elastic member 15. Due to the rebound force of the telescopic elastic member 15, the driven wheel 11 and the drive wheel 10 squeeze the welding wire 19 tightly and provide sufficient friction. The drive mechanism 8 drives the drive wheel 10 to rotate, and then drives the welding wire 19 forward under the action of friction, completing the forward feeding of the welding wire 19, so as to realize the automatic feeding of welding wire.

[0031] The guide 6 is a hollow tubular structure that can be detachably connected to the welding wire inlet 3 and aligned with the gap between the drive wheel 10 and the driven wheel 11. After the welding wire 19 passes through the guide 6, it enters the housing 1 and passes between the drive wheel 10 and the driven wheel 11 to ensure that the welding wire 19 enters between the drive wheel 10 and the driven wheel 11 in a straight line, preventing the welding wire 19 from bending and being unable to pass between the drive wheel 10 and the driven wheel 11.

[0032] like Figure 4 As shown, the housing has a locking interface 4 and a rotating locking groove 5 at the welding wire inlet 3. A locking lug 7 corresponding to the locking interface 4 is located near the end of the guide member 6. The guide member 6 extends into the welding wire inlet 3 after aligning with the locking interface 4 via the locking lug 7. Rotating the auxiliary guide member causes the locking lug 7 to enter the rotating locking groove 5, achieving a detachable connection between the auxiliary guide member and the housing 1. When disassembly is required, the auxiliary guide member can be rotated in the opposite direction and pulled outwards, making the operation simple and convenient.

[0033] In this embodiment, the guide 6 is a multi-stage telescopic sleeve, which can pass through from the welding wire inlet 3 to the welding wire outlet when stretched open. During normal use, the multi-stage telescopic sleeve 6 is in a retracted state and connected to the housing 1, serving to guide the welding wire 19. When the welding wire 19 is initially connected to the feeding device, the multi-stage telescopic sleeve 6 is removed and stretched open, inserted into the housing 1 from the welding wire inlet 3, with its end exiting from the welding wire outlet. At this point, the welding wire 19 is passed through the multi-stage telescopic sleeve 6 to complete the connection between the welding wire 19 and the feeding device. After completion, the multi-stage telescopic sleeve 6 is pulled out from the housing 1. This effectively avoids the problem of the wound welding wire being in a bent state, making it inconvenient to thread between the driving wheel 10 and the driven wheel 11 inside the housing 1.

[0034] This embodiment also discloses a welding device that uses the aforementioned automated welding wire feeding device to achieve automated welding.

[0035] In this embodiment, the tapered part 2 and the housing 1 can be detachably connected, and multiple tapered parts 2 are provided. The diameter of the welding wire outlet on each tapered part 2 is different to accommodate welding wires of different diameters.

[0036] Example 2 This embodiment is mainly applied when the welding wire is too thin (which makes it prone to wobbling) or too thick (which results in greater internal stress), to avoid the jumping phenomenon that may occur under these conditions. Therefore, a positioning device is also installed on the welding wire feeding path to prevent wire jumping.

[0037] In this embodiment, the positioning device is installed inside the housing 1. In other embodiments, it can also be installed in other locations.

[0038] like Figure 5 As shown, the positioning device includes three clamping wheels 22 surrounding the outside of the welding wire 19. Each clamping wheel 22 is connected to a second adjusting component 21 that drives its movement. The second adjusting component 21 has the same structure as the first adjusting component 20 in Embodiment 1. When the welding wire 19 passes through, the second adjusting component 21 drives the clamping wheels 22 to move closer to the welding wire 19, thus clamping the welding wire 19. In other embodiments, depending on the size of the clamping wheels 22 and the size of the commonly used welding wire 19, four, five, or other numbers of clamping wheels 22 may be provided.

[0039] Compared with the fixed welding wire inlet 3 and welding wire outlet, this positioning device has a certain elasticity and can undergo a certain deformation. When the welding wire jumps, it can move along with the welding wire (pressing the telescopic elastic element of the second adjustment component 21 on one side of its movement direction), relieving and releasing its jumping stress, and avoiding frictional damage to the welding wire that may occur at the rigid interfaces such as the welding wire inlet 3 and welding wire outlet.

[0040] like Figure 1 As shown, in order to facilitate the entry of welding wires of different specifications into the positioning device, a chamfer 221 is provided on the clamping wheel 22. After the welding wire enters, it is clamped by the lower part of the clamping wheel 22 (where the chamfer is not provided).

[0041] The other structures in this embodiment are the same as in Embodiment 1.

[0042] Example 3 Because there are many second adjustment components 21 in Embodiment 2, in order to avoid inconsistent elasticity of multiple telescopic elastic elements, which would prevent the welding wire from being clamped, the telescopic elastic elements in the second adjustment components 21 are removed in this embodiment, and the clamping wheel 22 is moved by the traction rope 23 instead.

[0043] like Figure 6 As shown, in this embodiment, a fixed wheel 24 is installed on the inner wall of the housing 1, and a traction rope 23 is connected to the fixed wheel 24. The traction rope 23 passes sequentially through the outer side of the rotating shafts of multiple clamping wheels 22 and finally extends out of the housing 1. When the traction rope 23 is pulled, it will drive the clamping wheels 22 to move inward synchronously, thereby clamping the welding wire. This clamping method also has a certain degree of elasticity, which can alleviate and release the jumping stress when the welding wire jumps. The traction rope 23 can also be an elastic rope to further optimize its performance.

[0044] The other structures in this embodiment are the same as in Embodiment 2.

[0045] The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0047] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated welding wire feeding device, characterized in that: It includes a guide for straightening welding wire and a welding wire drive assembly for conveying welding wire; the welding wire drive assembly includes a drive wheel that drives the welding wire to move and a driven wheel that cooperates with the drive wheel to clamp the welding wire, the driven wheel being connected to a first adjustment assembly that drives its movement.

2. The automated welding wire feeding device according to claim 1, characterized in that, The first adjustment component includes a support base, on which a sliding groove for accommodating a slider is provided. A telescopic elastic element for pushing the slider to move is provided in the sliding groove, and the central shaft of the driven wheel is connected to the slider.

3. The automated welding wire feeding device according to claim 2, characterized in that, The telescopic elastic element includes a sleeve and a telescopic rod. The sleeve is fixedly connected to the inner wall of the sliding groove. A spring is provided inside the sleeve. The spring is connected to one end of the telescopic rod, and the other end of the telescopic rod is connected to the slider.

4. The automated welding wire feeding device according to claim 3, characterized in that, A pressure sensor is also provided between the spring and the bottom of the sleeve.

5. An automated welding wire feeding device according to claim 1, characterized in that, It also includes a housing, which has a welding wire inlet communicating with a guide member. The housing is also connected to a tapered portion, on which a welding wire outlet corresponding to the welding wire inlet is opened. The welding wire drive assembly is installed inside the housing.

6. An automated welding wire feeding device according to claim 5, characterized in that, The welding wire inlet of the housing is provided with a locking interface, and a rotating locking groove is provided on the locking interface. The guide is provided with a locking lug that cooperates with the rotating locking groove.

7. An automated welding wire feeding device according to claim 6, characterized in that, The guide is a multi-stage telescopic sleeve, and the extension length of the multi-stage telescopic sleeve is not less than the length of the shell.

8. An automated welding wire feeding device according to claim 5, characterized in that, The housing is also provided with a positioning device to prevent wire skipping. The positioning device includes at least three clamping wheels surrounding the outside of the welding wire. The clamping wheels are connected to a second adjustment component that drives them to move. The second adjustment component has the same structure as the first adjustment component. The clamping wheel has a chamfer to facilitate the entry of the welding wire.

9. An automated welding wire feeding device according to claim 8, characterized in that, It also includes a fixed wheel installed on the inner wall of the housing, and a traction rope is provided on the fixed wheel. The traction rope passes through the outside of the clamping wheel shaft and extends out of the housing.

10. A welding device, characterized in that, Includes the automated welding wire feeding device as described in any one of claims 1-9.

Images