Wire feeding device convenient to replace

Abstract

The wire feeding device convenient to replace comprises a box body and a box door installed on the outer wall of the box body through a hinge, an unwinding mechanism and a conveying mechanism are arranged in the box body, the unwinding mechanism comprises an unwinding roller and a box body, the unwinding roller is rotationally connected to the inner wall of the box body, a locking assembly is arranged in the box body, and the box body is connected with the box body through a hinge. The locking assembly comprises an electromagnet, a permanent magnet and a sawtooth plate, the electromagnet is fixedly connected to the inner wall of the box body, and the permanent magnet is fixedly connected to the inner wall of the sawtooth plate; by arranging the sawtooth plate, the first sawtooth groove and the second sawtooth groove, when the electromagnet is powered on, the sawtooth plate is completely located in the second sawtooth groove, so that the unwinding roller can drive the welding wire reel to rotate to achieve wire unwinding, and when the electromagnet is powered off, the sawtooth plate can limit rotation of the unwinding roller under pushing of the spring; therefore, the situation that the unwinding roller and the welding wire reel continue to rotate under the inertia effect after wire feeding is stopped, and consequently the welding wire is wound and bent is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding wires, in particular to a wire feeding device which is easy to replace. Background Art

[0002] Welding wire is a metal wire welding material used as filler metal or as a conductive material. In order to ensure continuous, stable and accurate supply of welding wire during welding, a wire feeding device is usually used to feed the wire to ensure welding quality and efficiency.

[0003] After searching, the Chinese patent publication number CN210648952U discloses a welding wire feeding mechanism, including a base plate, a wire feeding mechanism and a wire drum limiting structure. A vertical plate is provided on the front side of the upper end of the base plate, and a support plate is provided on the left side of the rear side of the upper surface of the base plate. The wire feeding mechanism is arranged on the side wall of the vertical plate and is installed in cooperation with the upper end of the base plate. The wire drum limiting structure is arranged on the front wall of the support plate, and a control switch group is also included. The control switch group is arranged on the front side of the upper end of the base plate, and the input end of the control switch group is electrically connected to an external power supply.

[0004] The above patent has the following shortcomings: the device can realize the simultaneous wire feeding of multiple wire drums and the simultaneous feeding of welding wires of various diameters, but its threaded rod and wire drum are not provided with a rotational power source, and the wire feeding is realized by relying on the motor to drive the two rollers to rotate, thereby driving the wire drum to rotate for unwinding. When the wire feeding stops, the roller can stop rotating by relying on the motor, but the wire drum cannot stop rotating immediately due to inertia, resulting in excessive pulling out of the welding wire between the wire drum and the roller, which can easily lead to welding wire entanglement and confusion, and has certain limitations.

[0005] Therefore, a wire feeding device which is easy to replace is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present utility model hope to provide a wire feeding device that is easy to replace, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a wire feeding device that is easy to replace, includes a box body and a box door installed on the outer wall of the box body by hinges, a reeling mechanism and a conveying mechanism are arranged inside the box body, the reeling mechanism includes a reeling roller and a box body, the reeling roller is rotatably connected to the inner wall of the box body, and a locking assembly is arranged inside the box body, the locking assembly includes an electromagnet, a permanent magnet and a serrated plate, the electromagnet is fixedly connected to the inner wall of the box body, the permanent magnet is fixedly connected to the inner wall of the serrated plate, the magnetic poles of the electromagnet and the permanent magnet are opposite, and a spring 1 is buckled on the opposite side of the electromagnet and the permanent magnet, the reeling roller and the inner wall of the box body are respectively provided with a serrated groove 1 and a serrated groove 2 that are both compatible with the serrated plate, and the length of the serrated groove 1 is less than the length of the serrated groove 2.

[0008] In some embodiments, the outer wall of one end of the unwinding roller away from the box body is connected with a screw cap through a thread, and a welding wire reel is movably provided on the outer wall of the unwinding roller.

[0009] In some embodiments, the unwinding roller slides with a limit ring on the outer wall of one side close to the box body, a limit column is fixed on the side wall of the limit ring, and an insertion hole is opened on the inner wall of the welding wire reel to cooperate with the limit column. A spring 2 is fixed on the end of the limit column away from the limit ring, and the other end of the spring 2 is in contact with the inner wall of the insertion hole.

[0010] In some embodiments, the limiting ring and the opposite side of the box body are respectively fixedly connected with a friction ring, and the two friction rings are in contact and fit.

[0011] In some embodiments, a handle is welded on the top of the box, and a plurality of universal wheels are fixed to the bottom of the box by bolts.

[0012] In some embodiments, the conveying mechanism includes a second U-shaped frame fixedly mounted on the upper surface of the bottom of the box, a conical guide tube fixedly connected to the inner wall of the box, and a clamping assembly arranged above the second U-shaped frame.

[0013] In some embodiments, the clamping assembly includes a U-shaped frame and two symmetrically arranged clamping wheels, the U-shaped frame slidably fits on the inner wall of the box, and the top of the U-shaped frame is rotatably connected to a threaded rod, the threaded rod is connected to the inner wall of the box through threads, and the clamping wheel is rotatably connected to the inner wall of the U-shaped frame through a rotating shaft.

[0014] In some embodiments, the inner wall of the U-shaped frame 2 is rotatably connected to two wire feeding wheels corresponding to the position of the clamping wheel via a rotating shaft 2, and the inner wall of the U-shaped frame 2 is rotatably connected to gear 1 via a transmission shaft, and the outer wall of gear 1 is meshed with two gear 2s, and the two gear 2s are respectively fixedly connected to the outer walls of the two rotating shafts 2.

[0015] In some embodiments, a motor is fixed to the second outer wall of the U-shaped frame by bolts, the motor output shaft is fixedly connected to the transmission shaft by a coupling, and the electromagnet is connected in series in the power supply circuit of the motor.

[0016] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0017] 1. A wire feeding device that is easy to replace, by providing a serrated plate, a serrated groove one and a serrated groove two. When the electromagnet is powered on, the serrated plate is completely located in the serrated groove two, so that the unwinding roller can drive the welding wire reel to rotate to achieve wire unwinding. When the electromagnet is powered off, the serrated plate can limit the rotation of the unwinding roller under the push of a spring one, thereby preventing the unwinding roller and the welding wire reel from continuing to rotate due to inertia after the wire feeding stops, causing the welding wire to be entangled and bent.

[0018] 2. A wire feeding device that is easy to replace. By setting two friction rings, when the unwinding roller rotates, the friction ring connected to the limit ring rotates accordingly. The friction ring is in rotational contact with the friction ring fixed to the side wall of the box body, which increases the friction force. Therefore, the rotation speed of the unwinding roller and the wire reel can be limited to a certain extent, so that the welding wire has a certain tension and always remains in a taut state, thereby ensuring the wire feeding quality.

[0019] 3. A wire feeding device that is easy to replace. By setting a U-shaped frame and a threaded rod, rotating the U-shaped frame can drive the U-shaped frame and the clamping wheel to rise and fall, so that the clamping force of the welding wire can be adjusted, thereby improving the flexibility of the device; by connecting the electromagnet in series to the power supply circuit of the motor, the opening and closing of the motor can control the rotation and locking of the unwinding roller, thereby increasing the linkage of the device.

[0020] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is the main structural diagram of the utility model;

[0023] Figure 2 It is a cross-sectional view of the utility model;

[0024] Figure 3 This is a schematic diagram of the unwinding mechanism structure of the utility model;

[0025] Figure 4 It is a partial structural schematic diagram of the unwinding mechanism of the utility model;

[0026] Figure 5 It is a cross-sectional view of the conveying mechanism of the utility model;

[0027] Figure 6 It is a schematic diagram of the overall structure of the conveying mechanism of the utility model.

[0028] Reference numerals:

[0029] 1. Box body; 2. Box door; 3. Handle; 4. Universal wheel; 5. Unwinding mechanism; 6. Conveying mechanism; 7. Unwinding roller; 8. Screw cap; 9. Wire reel; 10. Limiting column; 11. Limiting ring; 12. Friction ring; 13. Box body; 14. Electromagnet; 15. Spring 1; 16. Permanent magnet; 17. Serrated plate; 18. Serrated groove 1; 19. Serrated groove 2; 20. U-shaped frame 1; 21. Pressure wheel; 22. Wire feeding wheel; 23. Gear 1; 24. U-shaped frame 2; 25. Conical guide tube; 26. Threaded rod; 27. Gear 2; 28. Motor; 29. ​​Spring 2. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0033] Embodiment 1:

[0034] like Figure 1-4 As shown, a wire feeding device that is easy to replace includes a box body 1 and a box door 2 installed on the outer wall of the box body 1 through hinges.

[0035] The box body 1 is provided with an unwinding mechanism 5 and a conveying mechanism 6, the unwinding mechanism 5 includes an unwinding roller 7 and a box body 13, the unwinding roller 7 is rotatably connected to the inner wall of the box body 13, and a locking assembly is provided inside the box body 13, the locking assembly includes an electromagnet 14, a permanent magnet 16 and a serrated plate 17, the electromagnet 14 is fixedly connected to the inner wall of the box body 13, the permanent magnet 16 is fixedly connected to the inner wall of the serrated plate 17, the electromagnet 14 and the permanent magnet 16 have opposite magnetic poles, and a spring 15 is buckled on the opposite side of the electromagnet 14 and the permanent magnet 16, the unwinding roller 7 and the inner wall of the box body 13 are respectively provided with a serrated groove 18 and a serrated groove 2 19 which are adapted to the serrated plate 17, and the length of the serrated groove 18 is less than the length of the serrated groove 2 19.

[0036] When the electromagnet 14 is energized, since the magnetic poles of the electromagnet 14 and the permanent magnet 16 are opposite, the permanent magnet 16 is attracted to drive the serrated plate 17 to slide toward the electromagnet 14, and the spring 15 is elastically deformed under the force. When the serrated plate 17 is completely moved from the serrated groove 18 to the serrated groove 2 19, the unwinding roller 7 is not restricted by the serrated plate 17 and can rotate freely. When the electromagnet 14 is powered off, the magnetic force disappears, and the spring 15 uses its own elasticity to drive the permanent magnet 16 and the serrated plate 17 to move into the serrated groove 1 18. At this time, a part of the serrated plate 17 is located in the serrated groove 1 18, and a part is located in the serrated groove 2 19, thereby limiting the rotation of the unwinding roller 7.

[0037] The device is provided with a serrated plate 17, a serrated groove 18 and a serrated groove 2 19. When the electromagnet 14 is energized, the serrated plate 17 is completely located in the serrated groove 2 19, so that the unwinding roller 7 can drive the welding wire reel 9 to rotate to achieve wire unwinding. When the electromagnet 14 is de-energized, the serrated plate 17 can limit the rotation of the unwinding roller 7 under the push of the spring 15, thereby preventing the unwinding roller 7 and the welding wire reel 9 from continuing to rotate due to inertia after the wire feeding stops, causing the welding wire to be entangled and bent.

[0038] like Figure 3 As shown, the outer wall of one end of the unwinding roller 7 away from the box body 13 is connected with a screw cap 8 through a thread, and the outer wall of the unwinding roller 7 is movably provided with a welding wire reel 9.

[0039] The outer wall of the unwinding roller 7 close to the box body 13 is slidably matched with the limit ring 11, and the side wall of the limit ring 11 is fixed with a limit column 10. The inner wall of the welding wire reel 9 is provided with a socket that is limited by the limit column 10. The end of the limit column 10 away from the limit ring 11 is fixed with a spring 29, and the other end of the spring 29 is in contact with the inner wall of the socket.

[0040] When the welding wire reel 9 needs to be installed on the unwinding roller 7, first rotate and remove the screw cap 8, then align the insertion hole of the welding wire reel 9 with the limit column 10 and insert it into the outer wall of the unwinding roller 7, and finally screw the screw cap 8 and the unwinding roller 7 together to fix them. Setting the screw cap 8 can facilitate the replacement of the welding wire reel 9.

[0041] like Figure 3 and Figure 4 As shown, one friction ring 12 is fixedly connected to each of the opposite sides of the limit ring 11 and the box body 13, and the two friction rings 12 are in contact with each other.

[0042] The friction ring 12 connected to the limit ring 11 rotates together with the limit ring 11 and the unwinding roller 7. During the rotation, the two friction rings 12 are in contact to increase the friction force, thereby limiting the rotation speed of the unwinding roller 7 and the welding wire reel 9 to a certain extent. The spring 29 can push the limit ring 11 and the friction ring 12 connected to the limit ring 11 to move toward the friction ring 12 connected to the box body 13, thereby ensuring that the two friction rings 12 are always in close contact, thereby playing a role in wear compensation.

[0043] The device is provided with two friction rings 12. When the unwinding roller 7 rotates, the friction ring 12 connected to the limit ring 11 rotates accordingly. The friction ring 12 is in rotational contact with the friction ring 12 fixed to the side wall of the box body 13, which increases the friction force. Therefore, the rotation speed of the unwinding roller 7 and the welding wire reel 9 can be limited to a certain extent, so that the welding wire has a certain tension and is always kept in a taut state, thereby ensuring the wire feeding quality.

[0044] like Figure 2 As shown, a handle 3 is welded on the top of the box body 1, and a plurality of universal wheels 4 are fixed to the bottom of the box body 1 by bolts.

[0045] The handle 3 and the universal wheels 4 can be used to facilitate the movement of the device.

[0046] Embodiment 2:

[0047] A wire feeding device that is easy to replace. This embodiment makes the following improvements on the basis of embodiment 1: Figure 5 and Figure 6 As shown:

[0048] The conveying mechanism 6 includes a second U-shaped frame 24 fixedly mounted on the upper surface of the bottom of the box body 1 , a conical guide tube 25 fixedly connected to the inner wall of the box body 1 , and a pressing assembly arranged above the second U-shaped frame 24 .

[0049] The clamping assembly includes a U-shaped frame 20 and two symmetrically arranged clamping wheels 21. The U-shaped frame 20 is slidably fitted to the inner wall of the box body 1, and a threaded rod 26 is rotatably connected to the top of the U-shaped frame 20. The threaded rod 26 is connected to the inner wall of the box body 1 through threads, and the clamping wheel 21 is rotatably connected to the inner wall of the U-shaped frame 20 through a rotating shaft.

[0050] The inner wall of the U-shaped frame 24 is rotatably connected to two wire feeding wheels 22 corresponding to the position of the clamping wheel 21 through a second rotating shaft, and the inner wall of the U-shaped frame 24 is rotatably connected to a gear 1 23 through a transmission shaft. The outer wall of the gear 1 23 is meshed with two gear 27, and the two gear 27 are respectively fixedly connected to the outer walls of the two rotating shafts.

[0051] The outer wall of the U-shaped frame 24 is fixed with a motor 28 by bolts, the output shaft of the motor 28 is fixedly connected to the transmission shaft by a coupling, and the electromagnet 14 is connected in series to the power supply circuit of the motor 28.

[0052] Rotating the threaded rod 26 can adjust the height of the U-shaped frame 20 and the clamping wheel 21. When the clamping wheel 21 is raised, the welding wire can pass through the clamping wheel 21 and the wire feeding wheel 22 more easily, and then pass the welding wire through the conical guide tube 25 and pull it to the outside of the box body 1, and finally connect it to the welding equipment, and then rotate the threaded rod 26 again to drive the U-shaped frame 20 and the clamping wheel 21 to descend until the clamping wheel 21 contacts the welding wire and maintains a certain pressure. At this time, the starting motor 28 drives the transmission shaft to drive the gear 1 23 to rotate, and the gear 1 23 drives the two gears 27 to rotate in the same direction, so that the two rotating shafts 2 and the wire feeding wheel 22 rotate in the same direction, thereby realizing the transportation of welding wire with the cooperation of the clamping wheel 21 and the wire feeding wheel 22.

[0053] The device is provided with a U-shaped frame 20 and a threaded rod 26. Rotating the U-shaped frame 20 can drive the U-shaped frame 20 and the clamping wheel 21 to rise and fall, thereby adjusting the clamping force of the welding wire, thereby improving the flexibility of the device; by connecting the electromagnet 14 in series to the power supply circuit of the motor 28, the opening and closing of the motor 28 can control the rotation and locking of the unwinding roller 7, thereby increasing the linkage of the device.

[0054] Working principle: When the device is in use, firstly, the screw cap 8 is rotated and removed, and then the socket on the wire reel 9 is aligned with the limit column 10 and inserted into the outer wall of the unwinding roller 7, and then the screw cap 8 and the unwinding roller 7 are screwed together to fix the wire reel 9, and then the welding wire is pulled out from the welding wire reel 9 for a section, and passes between the clamping wheel 21 and the wire feeding wheel 22, and finally pulled out from the conical guide tube 25 and connected to the welding equipment, and then the threaded rod 26 is rotated at this time to drive the U-shaped frame 1 20 and the clamping wheel 21 to descend, so that the clamping wheel 21 contacts with the welding wire and maintains a certain pressure; when wire feeding is required, the motor 28 is started to drive the transmission shaft to drive the gear 1 23 to rotate, and the gear 1 23 drives the two gears 27 to rotate in the same direction, so that the two rotating shafts 2 and the wire feeding wheel 22 rotate in the same direction to realize the wire feeding work, and at the same time, since the electromagnet 14 is connected in series in the power supply circuit of the motor 28, when the motor 28 is started, the electromagnet 14 is energized. , and because the magnetic poles of the electromagnet 14 and the permanent magnet 16 are opposite, the permanent magnet 16 is attracted by the electromagnet 14 and drives the serrated plate 17 to move completely from the serrated groove 18 to the serrated groove 2 19, so that the unwinding roller 7 and the wire reel 9 can rotate, so that when the wire feeding wheel 22 drives the welding wire to move, the welding wire drives the welding wire reel 9 to rotate to achieve continuous wire unwinding; when wire feeding is not needed, the motor 28 is turned off, so that the electromagnet 14 is powered off, and the spring 15 uses its own elasticity to push the serrated plate 17 to move into the serrated groove 1 18. Since the length of the serrated groove 1 18 is less than the length of the serrated groove 2 19, the serrated plate 17 can be located in the serrated groove 1 18 and the serrated groove 2 19 at the same time. At this time, the unwinding roller 7 is restricted by the serrated plate 17 and cannot rotate, thereby effectively preventing the unwinding roller 7 and the welding wire reel 9 from continuing to rotate due to inertia after the wire feeding is completed, resulting in excessive welding wire being released, causing the welding wire located between the unwinding mechanism 5 and the conveying mechanism 6 to be bent and entangled.

[0055] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A wire feeding device that is easy to replace, comprising a box body (1) and a box door (2) mounted on the outer wall of the box body (1) by hinges, characterized in that: The box body (1) is provided with an unwinding mechanism (5) and a conveying mechanism (6), the unwinding mechanism (5) comprising an unwinding roller (7) and a box body (13), the unwinding roller (7) being rotatably connected to the inner wall of the box body (13), and a locking assembly being provided inside the box body (13), the locking assembly comprising an electromagnet (14), a permanent magnet (16) and a sawtooth plate (17), the electromagnet (14) being fixedly connected to the inner wall of the box body (13), and the permanent magnet (16) being fixedly connected to the inner wall of the box body (13). 16) is fixedly connected to the inner wall of the sawtooth plate (17), the magnetic poles of the electromagnet (14) and the permanent magnet (16) are opposite, and the opposite sides of the electromagnet (14) and the permanent magnet (16) are buckled with a spring 1 (15), and the unwinding roller (7) and the inner wall of the box body (13) are respectively provided with a sawtooth groove 1 (18) and a sawtooth groove 2 (19) which are both compatible with the sawtooth plate (17), and the length of the sawtooth groove 1 (18) is less than the length of the sawtooth groove 2 (19).

2. A wire feeding device that is easy to replace according to claim 1, characterized in that: The outer wall of one end of the unwinding roller (7) away from the box body (13) is connected to a screw cap (8) via a thread, and a welding wire reel (9) is movably arranged on the outer wall of the unwinding roller (7).

3. A wire feeding device that is easy to replace according to claim 2, characterized in that: The outer wall of one side of the unwinding roller (7) close to the box body (13) is slidably matched with a limit ring (11), and a limit column (10) is fixed to the side wall of the limit ring (11). The inner wall of the welding wire reel (9) is provided with an insertion hole that is limitedly matched with the limit column (10), and a spring 2 (29) is fixed to one end of the limit column (10) away from the limit ring (11), and the other end of the spring 2 (29) is in contact with the inner wall of the insertion hole.

4. A wire feeding device that is easy to replace according to claim 3, characterized in that: One friction ring (12) is fixedly connected to each of the opposing sides of the limiting ring (11) and the box body (13), and the two friction rings (12) are in contact with each other.

5. The wire feeding device that is easy to replace according to claim 1 is characterized in that: A handle (3) is welded to the top of the box body (1), and a plurality of universal wheels (4) are fixed to the bottom of the box body (1) by bolts.

6. The wire feeding device that is easy to replace according to claim 1, characterized in that: The conveying mechanism (6) comprises a second U-shaped frame (24) fixedly mounted on the upper surface of the bottom of the box (1), a conical guide tube (25) fixedly connected to the inner wall of the box (1), and a clamping assembly arranged above the second U-shaped frame (24).

7. The wire feeding device that is easy to replace according to claim 6, characterized in that: The clamping assembly comprises a U-shaped frame (20) and two symmetrically arranged clamping wheels (21); the U-shaped frame (20) is slidably fitted on the inner wall of the box body (1); and a threaded rod (26) is rotatably connected to the top of the U-shaped frame (20); the threaded rod (26) is connected to the inner wall of the box body (1) via threads; and the clamping wheel (21) is rotatably connected to the inner wall of the U-shaped frame (20) via a rotating shaft.

8. The wire feeding device that is easy to replace according to claim 7, characterized in that: The inner wall of the U-shaped frame 2 (24) is rotatably connected to two wire feeding wheels (22) corresponding to the positions of the clamping wheel (21) via a second rotating shaft, and the inner wall of the U-shaped frame 2 (24) is rotatably connected to a gear 1 (23) via a transmission shaft, and the outer wall of the gear 1 (23) is meshed with two gear 2s (27), and the two gear 2s (27) are respectively fixedly connected to the outer walls of the two second rotating shafts.

9. The wire feeding device that is easy to replace according to claim 8, characterized in that: A motor (28) is fixed to the outer wall of the second U-shaped frame (24) by bolts, the output shaft of the motor (28) is fixedly connected to the transmission shaft by a coupling, and the electromagnet (14) is connected in series to the power supply circuit of the motor (28).

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