Gap-adjustable wire feeding transmission mechanism and wire feeder

Abstract

The utility model belongs to the field of wire feeding equipment, and discloses a gap-adjustable wire feeding transmission mechanism and a wire feeder, the gap-adjustable wire feeding transmission mechanism comprises a base plate, a movable component, a wire feeding assembly, a driving assembly and an adjusting component, the wire feeding assembly and the driving assembly are mounted on the base plate, and the adjusting component is mounted on the movable component. The wire feeding assembly comprises a wire feeding wheel and a driven wheel driving the wire feeding wheel to rotate, the driving assembly comprises a transmission shaft and a driving wheel connected to the transmission shaft, the driving wheel is in transmission fit with the driven wheel, and the transmission shaft is rotationally installed on the movable component and forms a movable whole with the movable component and the driving wheel. The gap between the driving wheel and the driven wheel can be adjusted so that the driving wheel and the driven wheel can be meshed tightly, the problems of wire feeding slipping and low wire feeding precision caused by the fact that the gap is enlarged can be solved, and the adjusting structure is low in cost, lower in maintenance cost and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of wire feeding equipment, and particularly relates to a gap-adjustable wire feeding transmission mechanism and wire feeder. BACKGROUND

[0002] In a robot automatic welding wire system, a wire feeder is configured to convey welding wire, and the wire feeder is used to straighten the coiled welding wire, so as to facilitate welding use.

[0003] In the prior art, a commonly used wire feeder mainly straightens the welding wire through cooperation of two groups of wire pressing wheels and wire feeding wheels. The wire feeding wheels are provided with wire feeding grooves for the welding wire to pass through, and the wire pressing wheels press the welding wire passing between the wire pressing wheels and the wire feeding wheels. When the welding wire passes through the other group of wire feeding wheels and wire pressing wheels, the welding wire is straightened into straight welding wire, thereby facilitating welding use of a robot welding gun. However, in the wire feeding process, the distance between the wire feeding wheels is usually less than the diameter of the welding wire, which causes the wire feeding wheels to be pressed for a long time, and the connecting shafts connected to the wire feeding wheels are bent downward and deformed, so that the gap between the first gear of the transmission connecting shaft and the second gear meshing with and driving the first gear increases, the transmission structure is loose, and the wire feeding process is prone to wire feeding slip and poor wire feeding precision. SUMMARY

[0004] Therefore, the utility model aims to provide a gap-adjustable wire feeding transmission mechanism and wire feeder to solve the problem of wire feeding slip and poor wire feeding precision caused by the increased gap of the transmission gear after long-term use of the existing wire feeder.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, a gap-adjustable wire feeding transmission mechanism is provided, which comprises a base plate, a movable component, a wire feeding assembly, a driving assembly, and an adjusting component. The wire feeding assembly and the driving assembly are installed on the base plate. The wire feeding assembly comprises a wire feeding wheel and a driven wheel driving the wire feeding wheel. The driving assembly comprises a transmission shaft and a driving wheel connected to the transmission shaft. The driving wheel is in transmission cooperation with the driven wheel. The transmission shaft is rotatably installed on the movable component and forms an integral whole with the movable component and the driving wheel. The movable component is movable along the center line direction of the driven wheel and the driving wheel on the base plate. The adjusting component is connected to the movable component to move the movable component along the center line direction.

[0007] In a possible implementation manner, the base plate is provided with an active opening through which the transmission shaft passes and is actively cooperated. The direction of the active opening is parallel to the center line direction.

[0008] In a possible implementation, an outer side of the transmission shaft is sleeved with a guide sleeve, the guide sleeve is fixedly connected with the movable member, and the guide sleeve is movably matched with the movable hole.

[0009] In a possible implementation, the guide sleeve is made of Teflon material.

[0010] In a possible implementation, the movable member is circumferentially provided with a plurality of guide holes, a guide direction of the guide holes is parallel to the center line direction, and a guide shaft connected with the base plate is movably matched in the guide holes.

[0011] In a possible implementation, the movable member is a disc-shaped special-shaped member and is circumferentially provided with a plurality of radially extending extension protrusions, and each extension protrusion is provided with one guide hole.

[0012] In a possible implementation, the adjusting member is linearly movable and abuts against an outer side of the movable member.

[0013] In a possible implementation, the adjusting member is a fastener threadedly matched with the mounting member.

[0014] In a possible implementation, the wire feeding wheel is provided with two and is driven by one driven wheel respectively, the two driven wheels are symmetrically engaged on a circumferential side of the driving wheel and are not in the same horizontal direction as the driving wheel.

[0015] In another aspect, a wire feeding machine is also provided, which comprises a housing and a gap-adjustable wire feeding transmission mechanism as in any of the above technical solutions arranged in the housing, the wire feeding assembly further comprises a wire pressing wheel, a wire feeding guide nozzle and a wire discharging guide nozzle, the wire pressing wheel abuts against an outer side of the wire feeding wheel, the wire feeding guide nozzle and the wire discharging guide nozzle are arranged on a wire feeding side and a wire discharging side of the wire feeding wheel respectively, and the driving assembly further comprises a driving component for driving the transmission shaft to rotate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The gap-adjustable wire feeding transmission mechanism and the wire feeding machine have the following advantages: the transmission shaft is rotatably installed through the movable member, and the driving wheel, the transmission shaft and the movable member are connected as an active whole which can move along the center line direction of the driven wheel and the driving wheel, so that the driving wheel can be moved to the direction of the driven wheel through the adjusting effect of the adjusting member, the gap between the driving wheel and the driven wheel can be adjusted, the driving wheel and the driven wheel are closely engaged, the problems of wire feeding slip and low wire feeding precision caused by the enlarged gap can be avoided, the adjusting structure has low cost, low maintenance cost and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of a wire feeder from a first perspective;

[0019] Figure 2 is a perspective view of a wire feeder from a second perspective;

[0020] Figure 3 is a perspective view of a wire feeder from a first perspective with a housing removed;

[0021] Figure 4 is a perspective view of a wire feeder from a second perspective with a housing removed;

[0022] Figure 5 is a front view of a wire feeder with a housing removed;

[0023] Figure 6 is Figure 5 is a cross-sectional view along section A-A;

[0024] Figure 7 is an exploded schematic view of a gap adjustable wire feed drive mechanism of a wire feeder;

[0025] Figure 8 is a perspective view of a movable member and a guide sleeve of a wire feeder.

[0026] In the figure: 1 - housing; 11 - wire outlet; 12 - wire inlet; 13 - base plate; 2 - drive assembly; 21 - drive wheel; 22 - speed reducer; 23 - drive motor; 24 - transmission shaft; 3 - wire feed assembly; 31 - wire feed wheel; 32 - wire press wheel; 33 - driven wheel; 4 - base plate; 41 - movable aperture; 5 - wire outlet guide nozzle; 6 - movable member; 61 - extension protrusion; 62 - guide hole; 63 - guide shaft; 7 - adjustment member; 8 - wire inlet guide nozzle; 9 - guide sleeve. DETAILED DESCRIPTION

[0027] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below in conjunction with specific embodiments.

[0028] Please refer to Figures 1-8As shown, the embodiment of the application provides a gap-adjustable wire feeding transmission mechanism, which comprises a base plate 4, a movable member 6, a wire feeding assembly 3, a driving assembly 2 and an adjusting member 7, the wire feeding assembly 3 and the driving assembly 2 are mounted on the base plate 4, the wire feeding assembly 3 comprises a wire feeding wheel 31 and a driven wheel 33 driving the wire feeding wheel 31 to rotate, the driving assembly 2 comprises a transmission shaft 24 and a driving wheel 21 connected to the transmission shaft 24, the driving wheel 21 is in transmission cooperation with the driven wheel 33, the transmission shaft 24 is rotatably mounted on the movable member 6 and forms an active whole with the movable member 6 and the driving wheel 21, the movable member 6 is movable along a center line direction of the driven wheel 33 and the driving wheel 21 on the base plate 4, and the adjusting member 7 is connected with the movable member 6 to move the movable member 6 along the center line direction.

[0029] The base plate 4 is used for mounting the wire feeding assembly 3, the driving assembly 2 and the movable member 6, and is vertically arranged in the wire feeder. The wire feeding assembly 3 is used for straightening and feeding the welding wire, and the wire feeding wheel 31 is driven to rotate by the driven wheel 33, specifically through coaxial connection of the first connecting shaft. The driving assembly 2 is used for driving the wire feeding wheel 31 of the wire feeding assembly 3 to rotate, and the driven wheel 33 is driven by the driving wheel 21 mounted on the transmission shaft 24, so as to drive the wire feeding wheel 31 to rotate and feed the wire. The movable member 6 is movably mounted on the base plate 4 and is movable at least along the center line direction of the driven wheel 33 and the driving wheel 21, and the transmission shaft 24 is mounted on the movable member 6 and can form an active whole with the driving wheel 21. Thus, when the movable member 6 moves along the center line direction of the driven wheel 33 and the driving wheel 21 under the adjusting action of the adjusting member 7, the active whole can also be integrated as a whole, and the driving wheel 21 on the active whole can be close to or away from the driven wheel 33, so as to adjust the gap between the driven wheel 33 and the driving wheel 21. In the case that the gap between the driving wheel 21 and the driven wheel 33 increases after long-term use, the gap can be reduced by adjusting, so as to solve the problem of wire feeding slip and reduction of wire feeding precision caused by too large gap between the driving wheel 21 and the driven wheel 33.

[0030] It can be understood that the connection between the adjusting member 7 and the movable member 6 can be direct connection or indirect connection. The direct connection can be connection through rotary connection, such as rotary connection through threads to linearly push the movable member 6 to move the adjusting member 7. The indirect connection can be connection through abutment, such as abutting the outer side of the movable member 6 through a pushing part to linearly move the movable member 6, and the like, which are not limited.

[0031] By the above technical scheme, the movable component 6 is rotatably installed on the transmission shaft 24, and the driving wheel 21, the transmission shaft 24 and the movable component 6 are connected as an active whole which can move along the center line direction of the driving wheel 33 and the driving wheel 21. Thus, under the adjusting action of the adjusting component 7, the movable component 6 can drive the driving wheel 21 to move towards the driving wheel 33, and the gap between the driving wheel 21 and the driving wheel 33 can be adjusted, so that the driving wheel 21 and the driving wheel 33 are closely engaged, thereby avoiding the problems of wire feeding slip and low wire feeding precision caused by the enlarged gap, and the adjusting structure is low in cost, low in maintenance cost and convenient to operate.

[0032] In an embodiment, the substrate 4 is provided with an active hole 41 through which the transmission shaft 24 passes and is actively fitted, and the active hole 41 is parallel to the center line direction.

[0033] In this way, the active hole 41 can facilitate the transmission shaft 24 to pass through to connect the driving wheel 21, and can also facilitate the transmission shaft 24 to guide in a direction parallel to the center line direction, thereby facilitating the movement of the active whole including the movable component 6, the transmission shaft 24 and the driving wheel 21. Preferably, the active hole 41 is a waist-shaped long hole.

[0034] Further, in order to make the wire feeding transmission more stable and reliable, a guide sleeve 9 is rotatably sleeved on the outside of the transmission shaft 24, the guide sleeve 9 is fixedly connected with the movable component 6, and the guide sleeve 9 is actively fitted with the active hole.

[0035] In this way, the guide sleeve 9 can facilitate the stable rotation of the transmission shaft 24, and can also better move up and down in the active hole 41 during the gap adjustment, and the structural design is more reasonable.

[0036] Specifically, the guide sleeve 9 is made of Teflon material. Teflon material has excellent high temperature resistance, corrosion resistance and low friction coefficient, which can facilitate better movement in the active hole 41.

[0037] In order to make the movable component 6 more stable during movement, the movable component 6 is provided with a plurality of guide holes 62 in the circumferential direction, the guide direction of the guide holes 62 is parallel to the center line direction, and a guide shaft 63 connected with the substrate 4 is fitted in the guide holes 62. In this way, the movable component 6 can be further guided through the cooperation of the guide holes 62 and the guide shaft 63, and the plurality of guide positions can realize effective limiting and guiding when the movable component 6 is installed with driving components such as motors and reducers 22, and the structural design is more reasonable.

[0038] Preferably, the movable member 6 is a disc-shaped special-shaped member and is provided with a plurality of radially extending extension protrusions 61 on the circumferential side, and each extension protrusion 61 is provided with one of the guide holes 62. By adopting the disc-shaped special-shaped structure, it is not only convenient to arrange a plurality of guide holes 62 in the circumferential direction, but also has a mounting area for mounting the driving components such as the driving motor 23 and the speed reducer 22, and can avoid other components.

[0039] In a preferred embodiment of the adjusting member 7, the adjusting member 7 can move linearly and abut against the outer side of the movable member 6.

[0040] The adjusting member 7 can move linearly and can conveniently push the movable member 6 by directly moving, so that the movable member 6 can move along the central connecting line direction, thereby realizing the adjustment or regulation of the gap.

[0041] On this basis, a mounting member is further included, the mounting member is connected with the base plate 4, and the adjusting member 7 is a fastener which is threadedly connected with the mounting member. The mounting member can be the housing 1 of the wire feeder, or can be a mounting component which is arranged for mounting the adjusting member 7, and the fastener can move linearly by threadedly connecting with the mounting member, so that the user can make the fastener push the movable member 6 by rotating the fastener, thereby realizing the movement of the movable member 6.

[0042] In addition, the fastener can also be rotationally connected with the movable member 6 and threadedly connected with the mounting member, so that the fastener is directly connected with the movable member 6 and can be adjusted. This is also one of the adjusting modes of the adjusting member 7, and the specific adjusting mode can be selected according to the actual requirements.

[0043] In the embodiment of the application, the wire feeding wheel 31 is provided with two and is driven by one driven wheel 33 respectively, and the two driven wheels 33 are symmetrically engaged on the circumferential side of the driving wheel 21 and are not in the same horizontal direction as the driving wheel 21.

[0044] The two wire feeding wheels 31 are respectively driven by one driven wheel 33 to rotate, and the two driven wheels 33 are symmetrically arranged on the two sides of the driving wheel 21 in the oblique direction, so that the distance between the driving wheel 21 and the two driven wheels 33 can be adjusted by changing the position of the driving wheel 21, which is more convenient and practical.

[0045] Please refer to Figures 1-8As shown, the embodiment of the present application also provides a wire feeder, comprising a shell 1 and a gap-adjustable wire feeding transmission mechanism as claimed in any one of the above technical solutions arranged in the shell 1, the wire feeding assembly 3 further comprises a wire pressing wheel 32, a wire feeding guide nozzle 8 and a wire discharging guide nozzle 5, the wire pressing wheel 32 is pressed against the outer side of the wire feeding wheel 31, the wire feeding guide nozzle 8 and the wire discharging guide nozzle 5 are arranged on the wire feeding side and the wire discharging side of the wire pressing wheel 32 respectively, and the driving assembly 2 further comprises a driving component for driving the transmission shaft 24 to rotate.

[0046] The wire feeding transmission mechanism is arranged in the shell 1 of the wire feeder, the wire pressing wheel 32 of the wire feeding assembly 3 cooperates with the wire feeding wheel 31 to realize the straightening and conveying of the welding wire, the wire feeding guide nozzle 8 is arranged on the wire feeding side, the wire discharging guide nozzle 5 is arranged on the wire discharging side, and the wire feeding and discharging can be realized by cooperating with the wire feeding port 12 and the wire discharging port 11 arranged at the two ends of the shell 1. The driving component of the driving assembly 2 can comprise a driving motor 23 and a speed reducer 22, the driving motor 23 is connected with the transmission shaft 24 through the speed reducer 22 and drives the transmission shaft 24 to rotate.

[0047] In order to ensure the integrity of the transmission mechanism and the stability of the transmission, the driving component is arranged on the movable member 6, so that the driving component can move integrally with the movable member 6, thereby reducing the setting of the transmission adapter structure and reducing the cost.

[0048] Specifically, the shell 1 comprises an outer shell and a bottom plate 13, and the fastener as the adjusting member 7 is threadedly connected to the bottom plate 13.

[0049] The above is only the preferred embodiment of the present application, and it should be pointed out that the above preferred embodiment should not be regarded as a limitation of the present application, and the protection scope of the present application should be limited by the scope defined in the claims. For ordinary skilled in the art, without departing from the spirit and scope of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A wire feeding transmission mechanism with adjustable gap, characterized in that, The assembly includes a base plate (4), a movable component (6), a wire feeding assembly (3), a drive assembly (2), and an adjustment component (7). The wire feeding assembly (3) and the drive assembly (2) are mounted on the base plate (4). The wire feeding assembly (3) includes a wire feeding wheel (31) and a driven wheel (33) that drives the wire feeding wheel (31) to rotate. The drive assembly (2) includes a transmission shaft (24) and a drive wheel (21) connected to the transmission shaft (24). The drive wheel (21) and the driven wheel (33) are driven together. The transmission shaft (24) is rotatably mounted on the movable component (6) and forms a movable whole with the movable component (6) and the drive wheel (21). The movable component (6) can move on the base plate (4) along the center line connecting the driven wheel (33) and the drive wheel (21). The adjustment component (7) is connected to the movable component (6) to allow the movable component (6) to move along the center line.

2. The adjustable gap wire feeding transmission mechanism as described in claim 1, characterized in that, The substrate (4) is provided with a movable opening (41) through which the transmission shaft (24) passes and is movably engaged, and the orientation of the movable opening (41) is parallel to the direction of the center line.

3. The adjustable gap wire feeding drive mechanism as described in claim 2, characterized in that, A guide sleeve (9) is rotatably sleeved on the outer side of the drive shaft (24). The guide sleeve (9) is fixedly connected to the movable component (6). The guide sleeve (9) is movably engaged with the movable opening (41).

4. The adjustable gap wire feeding drive mechanism as described in claim 3, characterized in that, The guide sleeve (9) is made of Teflon material.

5. The adjustable gap wire feeding drive mechanism as described in claim 1, characterized in that, The movable component (6) is provided with a plurality of guide holes (62) along the circumference. The guiding direction of the guide holes (62) is parallel to the direction of the center line. A guide shaft (63) connected to the substrate (4) is fitted inside the guide holes (62).

6. The adjustable gap wire feeding drive mechanism as described in claim 5, characterized in that, The movable component (6) is a disc-shaped irregular component and has a plurality of radially extending protrusions (61) on its periphery, each of which is provided with a guide hole (62).

7. The adjustable gap wire feeding drive mechanism as described in claim 1, characterized in that, The adjusting member (7) can move linearly and abut against the outside of the movable member (6).

8. The adjustable gap wire feeding drive mechanism as described in claim 1, characterized in that, It also includes a mounting component, which is connected to the base plate (4), and the adjusting component (7) is a fastener that is threadedly engaged with the mounting component.

9. The adjustable gap wire feeding drive mechanism as described in claim 1, characterized in that, The wire feeding wheel (31) is provided in two parts and is driven by a driven wheel (33) respectively. The two driven wheels (33) are symmetrically meshed on the periphery of the driving wheel (21) and are not on the same transverse direction as the driving wheel (21).

10. A wire feeder, characterized in that, The device includes a housing (1) and a wire feeding drive mechanism with adjustable gap as described in any one of claims 1-9, which is disposed within the housing (1). The wire feeding assembly (3) further includes a pressure roller (32), a wire inlet guide (8), and a wire outlet guide (5). The pressure roller (32) presses against the outside of the wire feeding roller (31). The wire inlet guide (8) and the wire outlet guide (5) are respectively disposed on the wire inlet side and the wire outlet side of the pressure roller (32) and the wire feeding roller. The drive assembly (2) further includes a drive component for driving the drive shaft (24) to rotate.

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