Wire feeding driving mechanism

Abstract

The utility model discloses a wire feeding driving mechanism, which relates to the technical field of wire feeders and comprises a casing, a guide rod fixed in the casing and two sliders slidably mounted on the guide rod, supporting arms are slidably mounted on the sliders, and tower type wire feeding wheels are rotatably mounted at the bottoms of the two supporting arms. The two sliding blocks can symmetrically move on the guide rod, and the two supporting arms can symmetrically move on the sliding blocks. The two tower type wire feeding wheels can move reversely at the same speed in the horizontal direction and the vertical direction, and the central symmetry point of the two tower type wire feeding wheels cannot be changed, so that after welding wires of different specifications are replaced, the welding wires can easily penetrate through the welding wire groove from the wire feeding and guiding barrel and then penetrate out of the wire discharging and guiding barrel, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wire feeding machines, and particularly relates to a wire feeding driving mechanism. Background Art

[0002] An automatic welding device needs to be equipped with a wire feeding machine to be used normally. The wire feeding wheels of the existing wire feeding machines have only one type of groove, which makes it necessary to replace the wire feeding wheels to better clamp and convey when changing the specifications of the welding wire, and it is inconvenient to use.

[0003] Moreover, a wire feeding wheel of a tower structure disclosed in a Chinese patent with the publication number CN215615681U has a stepped tower structure, and multiple groups of wire grooves with different specifications are provided on the wire feeding wheel. Although this wire feeding wheel can match welding wires of multiple specifications, when the existing wire feeding machine conveys the welding wire, at least a pair of wire feeding wheels are required to clamp the welding wire. When changing the wire groove of the welding wire used by this wire feeding wheel, the diameter of the corresponding wire groove also changes. The existing wire feeding wheel driving mechanism does not have the ability to adjust the position of the wire feeding wheel rotating shaft, and there is often only one fixed position, which cannot match this tower-type wire feeding wheel. Content of the Utility Model

[0004] The utility model provides a wire feeding driving mechanism, which can adjust the relative positions of two tower-type wire feeding wheels, so that the center position of the welding wire remains unchanged when changing the used wire groove, facilitating wire threading, and solving the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A wire feeding driving mechanism includes a machine shell, a guiding rod fixed inside the machine shell, and two sliders slidably installed on the guiding rod.

[0007] A supporting arm is slidably installed on the slider, and the moving direction of the supporting arm on the slider is perpendicular to the moving direction of the slider on the guiding rod.

[0008] Tower-type wire feeding wheels are rotatably installed at the bottoms of both supporting arms. The two tower-type wire feeding wheels are arranged oppositely, one is higher and the other is lower, and the sides with larger diameters of the two tower-type wire feeding wheels face away from each other.

[0009] A motor for driving the tower-type wire feeding wheel to rotate is arranged on one of the supporting arms.

[0010] The two sliders can move symmetrically on the guiding rod, and the two supporting arms can move symmetrically on the sliders, so that the center points of the matching positions of the wire grooves with the same specification on the two tower-type wire feeding wheels remain unchanged.

[0011] Preferably, a first gear is rotatably mounted on the casing. A first rack and a second rack parallel to the guide rod are respectively fixed on the two sliders. The first rack and the second rack are respectively located on both sides of the first gear and meshed with the first gear.

[0012] Preferably, a first lead screw parallel to the guide rod is rotatably mounted on the casing. A first threaded sleeve in threaded fit with the first lead screw is fixed on one of the sliders. A first handle is provided at one end of the first lead screw.

[0013] Preferably, a third rack and a fourth rack are respectively fixed on the two support arms. The third rack and the fourth rack are parallel to the moving direction of the support arms on the sliders. A second gear meshed with both the third rack and the fourth rack is rotatably mounted on the casing. The third rack and the fourth rack are respectively located on both sides of the second gear.

[0014] Preferably, a second threaded sleeve is fixed on the casing. A second lead screw parallel to the third rack is threadedly mounted on the second threaded sleeve. Two limit rings are fixed on the second lead screw. A limit sleeve sleeved on the second lead screw between the two limit rings is fixed on one of the support arms. A spring is sleeved on the second lead screw between the limit sleeve and the limit ring away from the tower wire feeding wheel. A second handle is provided on the second lead screw.

[0015] Preferably, a wire feeding guide cylinder and a wire discharging guide cylinder are provided on the casing. The wire feeding guide cylinder and the wire discharging guide cylinder are respectively located on both sides of the center points of the positions where the wire grooves of the same specification on the two tower wire feeding wheels are in cooperation.

[0016] Preferably, a detachable wire reel is rotatably mounted on the casing.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] By providing the guide rod, the slider and the support arm, when the two sliders move in the same speed and in opposite directions, the two tower wire feeding wheels arranged on the support arms can be driven to move in the same speed and in opposite directions in the horizontal direction. When the two support arms move in the same speed and in opposite directions on the two sliders respectively, the two tower wire feeding wheels can be driven to move in the same speed and in opposite directions in the vertical direction. When the two tower wire feeding wheels move in the same speed and in opposite directions in both the horizontal and vertical directions, the central symmetry point thereof will not change, which makes the center points of the positions where the wire grooves of the same specification on the two tower wire feeding wheels are in cooperation unchanged. Therefore, after replacing the wire of different specifications, the wire can also easily pass through the wire groove of the welding wire from the wire feeding guide cylinder and then pass out from the wire discharging guide cylinder, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional view of the overall structure of the present utility model;

[0020] Figure 2 is a three-dimensional view of the present utility model after removing part of the casing;

[0021] Figure 3 Schematic diagram of the cooperation of two tower-shaped wire feeding wheels of the present utility model;

[0022] Figure 4 Planar structure diagram of the present utility model;

[0023] Figure 5 Schematic diagram of the structure of the first gear of the present utility model.

[0024] In the figure: 1. Machine shell, 2. Guide rod, 3. Slide block, 4. Support arm, 5. Tower-shaped wire feeding wheel, 6. Motor, 7. Wire groove, 8. First gear, 9. First rack, 10. Second rack, 11. First lead screw, 12. First threaded sleeve, 13. First handle, 14. Third rack, 15. Fourth rack, 16. Second gear, 17. Second threaded sleeve, 18. Second lead screw, 19. Limit ring, 20. Limit sleeve, 21. Spring, 22. Second handle, 23. Incoming wire guide cylinder, 24. Outgoing wire guide cylinder, 25. Wire reel. Specific embodiments

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figures 1 to 5 shown, a wire feeding drive mechanism provided by an embodiment of the present utility model includes a machine shell 1, two parallel guide rods 2 fixed inside the machine shell 1, and two slide blocks 3 slidably installed on the guide rods 2. The two slide blocks 3 can move symmetrically on the guide rods 2 (i.e., move in the same speed and opposite directions). Support arms 4 are slidably installed on both of the two slide blocks 3. The moving direction of the support arms 4 on the slide blocks 3 is perpendicular to the moving direction of the slide blocks 3 on the guide rods 2. The two support arms 4 can also move symmetrically on the slide blocks 3. The axial direction of the two tower-shaped wire feeding wheels 5 is parallel to the axial direction of the guide rods 2.

[0027] An incoming wire guide cylinder 23 and an outgoing wire guide cylinder 24 are fixed on the machine shell 1. The incoming wire guide cylinder 23 and the outgoing wire guide cylinder 24 are respectively located on both sides of the center points of the positions where the wire grooves 7 of the same specification on the two tower-shaped wire feeding wheels 5 are matched. A detachable wire reel 25 is rotatably installed on the machine shell 1. Different specifications of wire reels 25 can be replaced, and the welding wire is passed through the wire grooves of the two tower-shaped wire feeding wheels 5 in cooperation from the incoming wire guide cylinder 23 and then passes out from the outgoing wire guide cylinder 24.

[0028] As Figure 3As shown, at the bottom of each of the two support arms 4, a tower-shaped wire feeding wheel 5 is rotatably installed. The two tower-shaped wire feeding wheels 5 are arranged opposite to each other, one being higher and the other lower, and the sides with larger diameters of the two tower-shaped wire feeding wheels 5 face away from each other. When the two tower-shaped wire feeding wheels 5 move in the vertical direction and in the horizontal direction, the specifications of the wire grooves 7 that the two tower-shaped wire feeding wheels 5 cooperate with can be changed. A motor 6 for driving the rotation of the tower-shaped wire feeding wheel 5 is arranged on one of the support arms 4, and the motor 6 can move together with this support arm 4.

[0029] When Figure 3 observed with this as a reference, through the above settings, when the two tower-shaped wire feeding wheels 5 move in the horizontal and vertical directions, the central symmetry point thereof will not change, which makes the center points of the mating positions of the wire grooves 7 with the same specifications on the two tower-shaped wire feeding wheels 5 remain unchanged, facilitating use.

[0030] To facilitate the adjustment of the horizontal positions of the two tower-shaped wire feeding wheels 5, a first gear 8 is rotatably installed on the machine housing 1. A first rack 9 and a second rack 10 parallel to the guide rod 2 are respectively fixed on the two sliders 3. The first rack 9 and the second rack 10 are respectively located on both sides of the first gear 8 and mesh with the first gear 8. Since the first gear 8 is arranged on the machine housing 1, when one of the sliders 3 moves along the guide rod 2, the first rack 9 will drive the first gear 8 to rotate, and the first gear 8 will drive the second rack 10 to move in the reverse direction, thereby realizing the synchronous movement of the two sliders 3 relative to or away from each other.

[0031] A first lead screw 11 parallel to the guide rod 2 is rotatably installed on the machine housing 1. A first threaded sleeve 12 threadedly engaged with the first lead screw 11 is fixed on one of the sliders 3, and a first handle 13 is fixed at the end of the first lead screw 11 extending out of the housing. Thus, by rotating the first handle 13, one of the sliders 3 can be driven to move along the guide rod 2, and then with the aid of the first gear 8, the other slider 3 can be driven to move in the reverse direction at the same speed, completing the synchronous symmetric movement of the two sliders 3.

[0032] To facilitate the adjustment of the vertical positions of the two tower-shaped wire feeding wheels 5, as Figure 4 shown, a third rack 14 and a fourth rack 15 are respectively fixed on the two support arms 4. The third rack 14 and the fourth rack 15 are arranged parallel to the moving direction of the support arms 4 on the slider 3. A second gear 16 meshing with both the third rack 14 and the fourth rack 15 is rotatably installed on the machine housing 1. The third rack 14 and the fourth rack 15 are respectively located on both sides of the second gear 16. In this way, when one of the support arms 4 moves along the slider 3, the third rack 14 will drive the second gear 16 to rotate, and then through the second gear 16, the fourth rack 15 will be driven to move in the reverse direction, thereby realizing the same-speed reverse movement of the two support arms 4 in the vertical direction and realizing the same-speed reverse adjustment of the vertical positions of the two tower-shaped wire feeding wheels 5.

[0033] A second threaded sleeve 17 is fixed on the casing 1, and a second lead screw 18 parallel to the third rack 14 is threadedly installed on the second threaded sleeve 17. Two limit rings 19 are fixed on the second lead screw 18. A limit sleeve 20 is fixed on one of the support arms 4. The limit sleeve 20 is sleeved on the second lead screw 18 between the two limit rings 19. A spring 21 is sleeved on the second lead screw 18 between the limit sleeve 20 and the limit ring 19 away from the tower-shaped wire feeding wheel 5. A second handle 22 is fixed on the second lead screw 18. By rotating the second handle 22, the second lead screw 18 can be rotated to move the second lead screw 18 up and down. When the second lead screw 18 moves, the positions of the two limit rings 19 will also change. When the limit ring 19 presses down the spring 21, it can push the support arm 4 fixedly connected to the limit sleeve 20 to move downward, so that the two tower-shaped wire feeding wheels 5 clamp the welding wire in the welding wire groove 7. By controlling the degree of expansion and contraction of the spring 21 pressed by the limit ring 19, the clamping force of the two tower-shaped wire feeding wheels 5 on the welding wire can be changed, which is convenient to use.

[0034] During use: Drive the two support arms 4 to move away from each other on the slider 3 to increase the vertical distance between the two tower-shaped wire feeding wheels 5. Then drive the two sliders 3 to move relative to each other along the guide rod 2 so that the required welding wire grooves 7 are aligned in the vertical direction. Then drive the two support arms 4 to move relative to each other on the slider 3 to reduce the distance between the two tower-shaped wire feeding wheels 5 in the vertical direction. After passing the welding wire through the welding wire groove 7 from the wire feeding guide cylinder 23 and extending it from the wire discharging guide cylinder 24, further reduce the vertical distance between the two tower-shaped wire feeding wheels 5 to clamp the welding wire with the tower-shaped wire feeding wheels 5. Then start the motor 6 to start wire feeding.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit and basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0036] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wire feeding drive mechanism, characterized in that: The invention comprises a housing (1), a guide rod (2) fixed in the housing (1), and two slide blocks (3) slidably mounted on the guide rod (2). A support arm (4) is slidably mounted on the slider (3), and the moving direction of the support arm (4) on the slider (3) is perpendicular to the moving direction of the slider (3) on the guide rod (2). The bottoms of the two support arms (4) are both rotatably mounted with tower wire feeding wheels (5), the two tower wire feeding wheels (5) are arranged opposite to each other, one high and one low, and the sides with larger diameters of the two tower wire feeding wheels (5) are facing away from each other. A motor (6) for driving the tower wire feeding wheel (5) to rotate is arranged on one of the support arms (4); The two slide blocks (3) can move symmetrically on the guide rod (2), and the two support arms (4) can move symmetrically on the slide block (3), so that the center point of the matching position of the welding wire grooves (7) of the same specification on the two tower wire feeding wheels (5) remains unchanged.

2. A wire feeding drive mechanism according to claim 1, characterized in that: A gear 1 (8) is rotatably mounted on the housing (1), and a rack 1 (9) and a rack 2 (10) parallel to the guide rod (2) are fixed to the two sliders (3), respectively. The rack 1 (9) and the rack 2 (10) are respectively located on both sides of the gear 1 (8) and mesh with the gear 1 (8).

3. A wire feeding drive mechanism according to claim 2, characterized in that: A screw rod (11) parallel to the guide rod (2) is rotatably mounted on the housing (1), a threaded sleeve (12) threadably matched with the screw rod (11) is fixed on one of the sliders (3), and a handle (13) is provided at one end of the screw rod (11).

4. A wire feeding drive mechanism according to claim 1, characterized in that: A rack three (14) and a rack four (15) are fixed to the two support arms (4) respectively, and the rack three (14) and the rack four (15) are parallel to the moving direction of the support arm (4) on the slider (3). A gear two (16) meshing with the rack three (14) and the rack four (15) is rotatably mounted on the housing (1), and the rack three (14) and the rack four (15) are respectively located on both sides of the gear two (16).

5. A wire feeding drive mechanism according to claim 4, characterized in that: A second threaded sleeve (17) is fixed on the housing (1), a second screw rod (18) parallel to the third rack (14) is threadedly mounted on the second threaded sleeve (17), two limiting rings (19) are fixed on the second screw rod (18), a limiting sleeve (20) sleeved on the second screw rod (18) between the two limiting rings (19) is fixed on one of the support arms (4), a spring (21) is sleeved on the second screw rod (18) between the limiting sleeve (20) and the limiting ring (19) away from the tower wire feeding wheel (5), and a second handle (22) is arranged on the second screw rod (18).

6. A wire feeding drive mechanism according to claim 1, characterized in that: The housing (1) is provided with a wire inlet guide tube (23) and a wire outlet guide tube (24), and the wire inlet guide tube (23) and the wire outlet guide tube (24) are respectively located on both sides of the center point of the matching position of welding wire grooves (7) of the same specification on two tower-type wire feeding wheels (5).

7. A wire feeding drive mechanism according to claim 1, characterized in that: A detachable welding wire reel (25) is rotatably mounted on the housing (1).

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