A wire feeding detection device for welding wire

Abstract

The present invention relates to the field of detection facilities, and specifically to a wire feeding detection device for welding wires, which includes a detection housing. A second servo push cylinder is penetratingly arranged on the inner side surface of the detection housing. The output end of the second servo push cylinder is equipped with a grinding part. An H-shaped frame is installed on the side surface of the grinding part. Load seats are elastically installed at both ends of the H-shaped frame. Brush shafts are penetratingly and rotatably installed at the relative ends of the two load seats. Ring brushes are fixedly installed at the front ends of the two brush shafts. The two ring brushes are symmetrically arranged. Ornaments are installed on the two load seats. Auxiliary wheels are installed on the opposite surfaces of the two load seats. A fixing frame is fixedly installed at the rear part of the inner bottom surface of the detection housing. The present invention improves the accuracy of wear resistance detection, ensures that the powder generated by wear is fully removed, and at the same time ensures the wear force of the grinding head on the welding wire.

Description

Technical Field

[0001] The present invention relates to the field of detection facilities, and particularly to a wire feeding detection device for welding wires. Background Art

[0002] A welding wire is a metal wire material that serves as a filler metal or simultaneously as a conductive material during the welding process. Before the wire feeding and collection of some large-diameter welding wires after processing, it is necessary to conduct wear resistance detection on the welding wires to detect whether their products are qualified.

[0003] However, during the actual detection process, when powder is generated after the welding wire is worn and adheres to the welding wire, it will increase the surface roughness of the welding wire. At the same time, the powder will also act as an abrasive, thereby increasing the wear force on the welding wire and accelerating the wear of the welding wire surface. Since the wear force during detection gradually increases and is not constant, the result of the wear resistance detection is not accurate enough. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the background art and propose a wire feeding detection device for welding wires.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A wire feeding detection device for welding wires, including a detection housing. A second servo push cylinder is penetrated and arranged on the inner side of the detection housing. A grinding member is installed at the output end of the second servo push cylinder. An H-shaped frame is installed on the side of the grinding member. Load seats are elastically installed at both ends of the H-shaped frame. Brush shafts are rotatably installed through the relative ends of the two load seats. Ring brushes are fixedly installed at the front ends of the two brush shafts. The two ring brushes are symmetrically arranged. Ornaments are installed on the two load seats. Auxiliary wheels are installed on the opposite surfaces of the two load seats. A fixing frame is fixedly installed at the rear part of the inner bottom surface of the detection housing. Two auxiliary rails are symmetrically fixedly installed at the ends of the fixing frame. The auxiliary wheels are attached to the ends of the auxiliary rails. A wire fixing member is installed at the front part of the inner bottom surface of the detection housing.

[0006] Preferably, the grinding member includes a turning seat fixedly installed at the output end of the second servo push cylinder. Angular frames are rotatably installed at the upper and lower ends of the turning seat. Grinding heads are elastically installed at one ends of the two angular frames. A guide post is fixedly installed at the rear end of the turning seat. A sliding sleeve is slidably installed on the outer surface of the guide post. Turning frames are rotatably installed at the upper and lower edge positions of the sliding sleeve. The end of the turning frame is rotatably connected to the other end of the angular frame.

[0007] Preferably, a main wheel is installed at the rear end of the sliding sleeve. A main rail is fixedly installed in the middle of the fixing frame. The H-shaped frame is fixed to the side of the turning seat. A second spring is inlaid at the end of the guide post. The end of the second spring is fixed to the inner rear end of the sliding sleeve.

[0008] Preferably, sliders extend from both sides of the carrier base. The sliders are slidably installed through the inner sides of the H-shaped frame. Third springs are embedded in the opposite surfaces of the two carrier bases, and the ends of the third springs are fixed to the middle of the H-shaped frame.

[0009] Preferably, the ornament includes two first connecting shafts rotatably installed through the opposite ends of the two carrier bases. A second connecting shaft is arranged between the brush shaft and the first connecting shaft. The second connecting shaft is rotatably installed through the carrier base. A large gear is coaxially embedded at the front end of the first connecting shaft. A small gear is coaxially embedded at the front end of the second connecting shaft. The small gear meshes with the large gear. A transmission gear is coaxially embedded at the rear end of the first connecting shaft. Two tooth plates are symmetrically and fixedly installed at the end of the fixed frame. The two tooth plates are located between the two sub-tracks, and the tooth plates are behind the sub-tracks.

[0010] Preferably, a convex block extends from the rear end of the second connecting shaft. A connecting rod is rotatably installed at the end of the convex block. A groove seat extends from the rear end of the brush shaft. The end of the connecting rod is rotatably installed inside the groove seat.

[0011] Preferably, the wire fixing member includes two brackets symmetrically and fixedly installed at the front part of the inner bottom surface of the detection housing. One end of the bracket is fixedly installed with a wire limiting seat. The other end of the bracket is fixedly installed with a V-shaped seat. A first chuck is arranged above the wire limiting seat. A pressing head is arranged above the middle of the V-shaped seat. An L-shaped frame is fixedly installed between the first chuck and the pressing head. A guiding edge is slidably installed at the corner of the L-shaped frame. A second chuck is embedded at one end of the guiding edge.

[0012] Preferably, a first servo push cylinder is fixedly installed on the inner top surface of the detection housing. The output end of the first servo push cylinder is fixedly installed with a bridge frame. Two limiting frames are symmetrically and slidably installed through both ends of the bridge frame. The ends of the two limiting frames are respectively fixed to the L-shaped frame and the first chuck. First springs are wound around the outer sides of the two limiting frames. One end of each of the two first springs is fixed to the end of the bridge frame. The other end of one of the first springs is fixed to the upper end of the L-shaped frame. The other end of the other first spring is fixed to the upper end of the first chuck. A pushing frame is rotatably installed at the other end of the guiding edge. The end of the pushing frame is rotatably connected to the bridge frame. A pressing column is fixedly installed at the upper end edge of the L-shaped frame. The pressing column is located between the two limiting frames.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the second servo push cylinder drives the grinding head to move, the H-shaped frame will be driven to move synchronously. At this time, the auxiliary wheel rolls on the inclined surface of the auxiliary rail to push the carrier seat, causing the two carrier seats to move towards each other, and then driving the two ring brushes to move towards each other to fit against the outside of the welding wire. When the grinding head wears the welding wire, the ring brush can brush off the worn powder to avoid increasing the wear force on the welding wire, thereby improving the accuracy of wear resistance detection.

[0015] 2. After the two carrier seats move towards each other, when the auxiliary wheel rolls on the horizontal plane of the auxiliary rail, the transmission gear on the first connecting shaft will mesh with the toothed plate and roll on the toothed plate. Then, through the large gear and the small gear, the rotation of the second connecting shaft is accelerated, thereby driving the convex block to rotate, driving the connecting rod to move, continuously pushing the groove seat, enabling the brush shaft to swing reciprocally, and then driving the ring brush to swing reciprocally around the brush shaft to increase the cleaning force of the ring brush on the welding wire to ensure that the worn powder is fully removed.

[0016] 3. Through the set pressing head, the welding wire can be pressed towards the V-shaped seat, causing the welding wire to be bent and tightly pressed inside the V-shaped seat. At the same time, the first chuck tightly presses the welding wire in the wire limiting seat. Subsequently, the bridge frame continues to move downward and presses on the pressing column, enabling the pressing head and the first chuck to firmly press on the welding wire. During this process, the bridge frame will drive the pushing frame to move, driving the guide edge to slide on the L-shaped frame, enabling the second chuck to make an oblique advance to secondarily press the bent welding wire to firmly fix the welding wire, thereby ensuring the wear force of the grinding head on the welding wire and avoiding the phenomenon that the welding wire shifts during the wear process, resulting in insufficient wear force and affecting the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention;

[0018] Figure 2 is the schematic diagram of the grinding head part of the present invention;

[0019] Figure 3 is the schematic diagram of the fixing frame part of the present invention;

[0020] Figure 4 is the schematic diagram of the turning seat part of the present invention;

[0021] Figure 5 is the schematic diagram of another perspective of the turning seat part of the present invention;

[0022] Figure 6 is of the present invention Figure 5 magnified view of A;

[0023] Figure 7 is the internal view of the sliding sleeve of the present invention;

[0024] Figure 8Schematic diagram of the wire limiting seat of the present invention.

[0025] In the attached drawings, the list of components represented by each reference number is as follows: 1. Detection housing; 2. First servo push cylinder; 3. Bridge; 4. Second servo push cylinder; 5. Grinding head; 6. Fixed frame; 7. Bracket; 8. Main rail; 9. Auxiliary wheel; 10. Auxiliary rail; 11. Tooth plate; 12. Main wheel; 13. Wire limiting seat; 14. Flipping seat; 15. Ring brush; 16. H-shaped frame; 17. V-shaped seat; 18. L-shaped frame; 19. Pressing head; 20. First chuck; 21. Pushing frame; 22. Guide edge; 23. Slide block; 24. Second chuck; 25. Pressing column; 26. Limiting frame; 27. First spring; 28. Sleeve; 29. Guide post; 30. Second spring; 31. Flipping frame; 32. Angle frame; 33. First connecting shaft; 34. Transmission gear; 35. Carrier seat; 36. Large gear; 37. Third spring; 38. Second connecting shaft; 39. Small gear; 40. Brush shaft; 41. Connecting rod; 42. Convex block; 43. Groove seat. Detailed implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides a technical solution: As Figures 1-8 shown, a wire feeding detection device for welding wire includes a detection housing 1. A second servo push cylinder 4 is penetratively arranged on the inner side surface of the detection housing 1. The second servo push cylinder 4 can drive the grinding head 5 to slide left and right to wear the welding wire. A grinding member is installed at the output end of the second servo push cylinder 4. An H-shaped frame 16 is installed on the side surface of the grinding member. Carrier seats 35 are elastically installed at both ends of the H-shaped frame 16. The H-shaped frame 16 serves to carry the carrier seats 35. Brush shafts 40 are rotatably installed through the opposite ends of the two carrier seats 35. Ring brushes 15 are fixedly installed at the front ends of the two brush shafts 40. The ring brushes 15 can swing reciprocally around the brush shafts 40 to remove the powder on the welding wire. The two ring brushes 15 are symmetrically arranged. Decorations are installed on the two carrier seats 35. Auxiliary wheels 9 are installed on the opposite surfaces of the two carrier seats 35. A fixed frame 6 is fixedly installed at the rear part of the inner bottom surface of the detection housing 1. Two auxiliary rails 10 are symmetrically and fixedly installed at the end of the fixed frame 6. The fixed frame 6 serves to fix the auxiliary rails 10. The auxiliary wheels 9 are attached to the ends of the auxiliary rails 10. The cooperation of the auxiliary wheels 9 and the auxiliary rails 10 can make the two carrier seats 35 move towards each other, and further make the two ring brushes 15 move towards each other to fit on the surface of the welding wire. A wire fixing member is installed at the front part of the inner bottom surface of the detection housing 1.

[0028] The grinding piece includes a turning base 14 fixedly installed at the output end of the second servo push cylinder 4. Angle brackets 32 are rotatably installed at both the upper and lower ends of the turning base 14. The turning base 14 serves to carry the angle brackets 32. At one end of each of the two angle brackets 32, a grinding head 5 is elastically installed. The grinding head 5 can be elastically connected to the angle bracket 32 by a spring or the like. Since this kind of elastic connection is prior art, it is not elaborated in detail here. A guide post 29 is fixedly installed at the rear end of the turning base 14. The elastic connection of the grinding head 5 can ensure that it always contacts the welding wire during the wear process. A sliding sleeve 28 is slidably installed on the outer surface of the guide post 29. The guide post 29 serves to guide the sliding sleeve 28. At the upper and lower end edges of the sliding sleeve 28, turning brackets 31 are rotatably installed. The sliding sleeve 28 can drive the turning brackets 31 to move so as to push the angle brackets 32, enabling the two grinding heads 5 to close and tightly adhere to the outside of the welding wire. The end of the turning bracket 31 is rotatably connected to the other end of the angle bracket 32.

[0029] A main wheel 12 is installed at the rear end of the sliding sleeve 28. A main rail 8 is fixedly installed in the middle of the fixed frame 6. The cooperation between the main wheel 12 and the main rail 8 can drive the sliding sleeve 28 to move. The H-shaped frame 16 is fixed to the side of the turning base 14. A second spring 30 is embedded at the end of the guide post 29. The end of the second spring 30 is fixed to the inner rear end of the sliding sleeve 28. The second spring 30 can reset the sliding sleeve 28 after it moves.

[0030] Sliders 23 extend from both sides of the carrier seat 35. The sliders 23 are slidably installed through both sides of the inside of the H-shaped frame 16. The sliders 23 can guide the carrier seat 35 to prevent the carrier seat 35 from separating from the H-shaped frame 16. Third springs 37 are embedded on the opposite faces of the two carrier seats 35. The ends of the third springs 37 are fixed to the middle of the H-shaped frame 16. The third springs 37 serve to reset the carrier seat 35 after it moves.

[0031] The decorative piece includes two first connecting shafts 33 rotatably installed through the opposite ends of the two carrier seats 35. A second connecting shaft 38 is provided between the brush shaft 40 and the first connecting shaft 33. Both the first connecting shaft 33 and the second connecting shaft 38 serve for connection and transmission. The second connecting shaft 38 is rotatably installed through the carrier seat 35. A large gear 36 is coaxially embedded at the front end of the first connecting shaft 33. A small gear 39 is coaxially embedded at the front end of the second connecting shaft 38. The small gear 39 meshes with the large gear 36. The cooperation between the small gear 39 and the large gear 36 can accelerate the rotation of the second connecting shaft 38, thereby increasing the swing frequency of the ring brush 15. A transmission gear 34 is coaxially embedded at the rear end of the first connecting shaft 33. Two toothed plates 11 are symmetrically and fixedly installed at the end of the fixed frame 6. The cooperation between the transmission gear 34 and the toothed plates 11 can drive the first connecting shaft 33 to rotate. The two toothed plates 11 are located between the two secondary rails 10, and the toothed plates 11 are behind the secondary rails 10.

[0032] A bump 42 extends from the rear end of the second connecting shaft 38. A connecting rod 41 is rotatably installed at the end of the bump 42. A groove seat 43 extends from the rear end of the brush shaft 40. The end of the connecting rod 41 is rotatably installed inside the groove seat 43. The second connecting shaft 38 can drive the bump 42 to rotate, thereby driving the connecting rod 41 to move, continuously pushing the groove seat 43, enabling the brush shaft 40 to swing reciprocally, and then driving the annular brush 15 to swing reciprocally around the brush shaft 40 to remove the worn wire powder.

[0033] The wire fixing member includes two brackets 7 symmetrically and fixedly installed at the front part of the inner bottom surface of the detection housing 1. The brackets 7 play a role in supporting and fixing. A wire limiting seat 13 is fixedly installed at one end of the bracket 7. The wire limiting seat 13 can position the wire. A V-shaped seat 17 is fixedly installed at the other end of the bracket 7. Above the wire limiting seat 13, there is a first chuck 20. Above the middle of the V-shaped seat 17, there is a pressing head 19. The cooperation between the V-shaped seat 17 and the pressing head 19 can bend and fix the wire, thereby increasing friction and improving the fixing force. An L-shaped frame 18 is fixedly installed between the first chuck 20 and the pressing head 19. The L-shaped frame 18 plays a role in fixing the first chuck 20 and the pressing head 19 together. A guiding edge 22 is slidably installed at the corner of the L-shaped frame 18. A second chuck 24 is embedded at one end of the guiding edge 22. The guiding edge 22 plays a role in guiding the second chuck 24 obliquely. Both the first chuck 20 and the second chuck 24 play a role in tightly fixing the wire.

[0034] A first servo push cylinder 2 is fixedly installed on the inner top surface of the detection housing 1. The output end of the first servo push cylinder 2 is fixedly installed with a bridge 3. The first servo push cylinder 2 plays a role in driving the bridge 3 to move. Two limiting frames 26 are symmetrically and slidably penetrated through both ends of the bridge 3. The ends of the two limiting frames 26 are respectively fixed to the L-shaped frame 18 and the first chuck 20. The limiting frames 26 play a role in connecting and guiding. One end of each of the two first springs 27 is fixed to the end of the bridge 3. The first springs 27 play a role in resetting the obliquely moving second chuck 24. The other end of one of the first springs 27 is fixed to the upper end of the L-shaped frame 18, and the other end of the other first spring 27 is fixed to the upper end of the first chuck 20. The other end of the guiding edge 22 is rotatably installed with a push frame 21. The end of the push frame 21 is rotatably connected to the bridge 3. The push frame 21 can move driven by the bridge 3 to drive the guiding edge 22 to slide on the L-shaped frame 18, enabling the second chuck 24 to be obliquely pushed to secondarily press the bent wire. A pressing column 25 is fixedly installed at the upper edge of the upper end of the L-shaped frame 18. The bridge 3 can press on the pressing column 25, enabling the pressing head 19 and the first chuck 20 to firmly press on the wire. The pressing column 25 is located between the two limiting frames 26.

[0035] During use, the welding wire is placed in the two wire limiting seats 13 for support and positioning. Subsequently, the first servo push cylinder 2 drives the bridge 3 to move downward, thereby driving the pressure head 19 and the first chuck 20 to move downward. The welding wire is pressed towards the V-shaped seat 17 through the downward-moving pressure head 19, so that the welding wire is bent and pressed tightly in the V-shaped seat 17. At the same time, the first chuck 20 presses the welding wire tightly in the wire limiting seat 13. Subsequently, the bridge 3 continues to move downward and presses on the pressure column 25, enabling the pressure head 19 and the first chuck 20 to firmly press on the welding wire. During this process, the bridge 3 drives the push frame 21 to move, so as to drive the guide edge 22 to slide on the L-shaped frame 18, enabling the second chuck 24 to make an oblique advance to secondarily press the bent welding wire to firmly fix the welding wire. Subsequently, the second servo push cylinder 4 drives the turning seat 14 and the H-shaped frame 16 to move. At this time, the auxiliary wheel 9 rolls on the inclined surface of the auxiliary rail 10 to push the carrier seat 35, causing the two carrier seats 35 to move towards each other, thereby driving the two ring brushes 15 to move towards each other to fit on the outer side of the welding wire. At the same time, the main wheel 12 fits on the main rail 8. Subsequently, the turning seat 14 and the H-shaped frame 16 continue to move. At this time, the auxiliary wheel 9 rolls on the horizontal plane of the auxiliary rail 10, while the main wheel 12 rolls on the inclined surface of the main rail 8 to drive the sliding sleeve 28 to slide on the guide column 29, thereby driving the turning frame 31 to move to push the diagonal frame 32, enabling the two grinding heads 5 to close together to clamp on the outer side of the welding wire. Subsequently, the second servo push cylinder 4 drives the grinding heads 5 to continuously move left and right. At this time, the main wheel 12 rolls on the straight section of the main rail 8 to keep the grinding heads 5 in a closed state to wear the welding wire. During this process, when the auxiliary wheel 9 rolls on the horizontal plane of the auxiliary rail 10, the transmission gear 34 on the first connecting shaft 33 meshes with the toothed plate 11 and rolls on the toothed plate 11. Then, through the large gear 36 and the small gear 39, the rotation of the second connecting shaft 38 is accelerated, thereby driving the cam block 42 to rotate to drive the connecting rod 41 to move to continuously push the groove seat 43, enabling the brush shaft 40 to swing reciprocally, thereby driving the ring brush 15 to swing reciprocally around the brush shaft 40 to remove the welding wire powder worn out to avoid affecting the detection accuracy.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire feeding detection device, comprising a detection housing (1), characterized in that: A second servo push cylinder (4) is disposed through the inner side surface of the detection housing (1). A grinding member is installed at the output end of the second servo push cylinder (4). An H-shaped frame (16) is installed on the side surface of the grinding member. Load seats (35) are elastically installed at both ends of the H-shaped frame (16). Brush shafts (40) are rotatably installed through the opposite ends of the two load seats (35). Ring brushes (15) are fixedly installed at the front ends of the two brush shafts (40). The two ring brushes (15) are symmetrically arranged. Ornaments are installed on the two load seats (35). Auxiliary wheels (9) are installed on the opposite surfaces of the two load seats (35). A fixing frame (6) is fixedly installed at the rear part of the inner bottom surface of the detection housing (1). Two auxiliary rails (10) are symmetrically and fixedly installed at the ends of the fixing frame (6). The auxiliary wheels (9) are attached to the ends of the auxiliary rails (10). A wire fixing member is installed at the front part of the inner bottom surface of the detection housing (1); The wire fixing member includes two brackets (7) symmetrically and fixedly installed at the front part of the inner bottom surface of the detection housing (1). A wire limiting seat (13) is fixedly installed at one end of the bracket (7). A V-shaped seat (17) is fixedly installed at the other end of the bracket (7). A first chuck (20) is disposed above the wire limiting seat (13). A pressing head (19) is disposed above the middle of the V-shaped seat (17). An L-shaped frame (18) is fixedly installed between the first chuck (20) and the pressing head (19). A guiding edge (22) is slidably installed at the corner of the L-shaped frame (18). A second chuck (24) is embedded at one end of the guiding edge (22); A first servo push cylinder (2) is fixedly installed on the inner top surface of the detection housing (1). A bridge frame (3) is fixedly installed at the output end of the first servo push cylinder (2). Two limiting frames (26) are symmetrically and slidably installed through the two ends of the bridge frame (3). The ends of the two limiting frames (26) are respectively fixed to the L-shaped frame (18) and the first chuck (20). A first spring (27) is wound around the outer sides of the two limiting frames (26). One end of the two first springs (27) is fixed to the end of the bridge frame (3). The other end of one of the first springs (27) is fixed to the upper end of the L-shaped frame (18). The other end of the other first spring (27) is fixed to the upper end of the first chuck (20). A push frame (21) is rotatably installed at the other end of the guiding edge (22). The end of the push frame (21) is rotatably connected to the bridge frame (3). A pressing column (25) is fixedly installed at the upper end edge of the L-shaped frame (18). The pressing column (25) is located between the two limiting frames (26).

2. The wire feeding detection device according to claim 1, characterized in that: The grinding piece includes a turning seat (14) fixedly installed at the output end of the second servo push cylinder (4). Angle brackets (32) are rotatably installed at both the upper and lower ends of the turning seat (14). Grinding heads (5) are elastically installed at one end of each of the two angle brackets (32). A guide post (29) is fixedly installed at the rear end of the turning seat (14). A sliding sleeve (28) is slidably installed on the outer surface of the guide post (29). Turning frames (31) are rotatably installed at the upper and lower end edges of the sliding sleeve (28). The end of the turning frame (31) is rotatably connected to the other end of the angle bracket (32).

3. The wire feeding detection device according to claim 2, characterized in that: A main wheel (12) is installed at the rear end of the sliding sleeve (28). A main rail (8) is fixedly installed in the middle of the fixed frame (6). The H-shaped frame (16) is fixed to the side of the turning seat (14). A second spring (30) is inlaid at the end of the guide post (29). The end of the second spring (30) is fixed to the inner rear end of the sliding sleeve (28).

4. A wire feeding detection device according to claim 1, characterized in that: Sliders (23) extend from both sides of the carrier seat (35). The sliders (23) are slidably installed through the inner sides of the H-shaped frame (16). Third springs (37) are inlaid on the opposite surfaces of the two carrier seats (35). The ends of the third springs (37) are fixed to the middle of the H-shaped frame (16).

5. The wire feeding detection device according to claim 1, characterized in that: The decorative piece includes two first connecting shafts (33) rotatably installed through the opposite ends of the two carrier seats (35). A second connecting shaft (38) is provided between the brush shaft (40) and the first connecting shaft (33). The second connecting shaft (38) is rotatably installed through the carrier seat (35). A large gear (36) is coaxially inlaid at the front end of the first connecting shaft (33). A small gear (39) is coaxially inlaid at the front end of the second connecting shaft (38). The small gear (39) meshes with the large gear (36). A transmission gear (34) is coaxially inlaid at the rear end of the first connecting shaft (33). Two toothed plates (11) are symmetrically and fixedly installed at the end of the fixed frame (6). The two toothed plates (11) are located between the two secondary rails (10). The toothed plates (11) are located behind the secondary rails (10).

6. The wire feeding detection device according to claim 5, wherein: A convex block (42) extends from the rear end of the second connecting shaft (38). A connecting rod (41) is rotatably installed at the end of the convex block (42). A groove seat (43) extends from the rear end of the brush shaft (40). The end of the connecting rod (41) is rotatably installed inside the groove seat (43).

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