Inverter welding machine with wire feeding function structure

Abstract

The utility model discloses an inverter welding machine with a wire feeding function structure, which comprises an assembly type shell, a wire feeding synchronizing mechanism, a welding machine wire feeding assembly and a welding machine wire feeding disc, the wire feeding synchronizing mechanism and the welding machine wire feeding assembly are arranged in the assembly type shell, the welding machine wire feeding disc is detachably connected to the wire feeding synchronizing mechanism, and the welding machine wire feeding disc is detachably connected to the welding machine wire feeding assembly. A welding wire led out of the welding machine wire feeding disc is conveyed to a welding area through the welding machine wire feeding assembly, after being led out of the welding machine wire feeding disc, the welding wire is conveyed to the welding area through the welding machine wire feeding assembly, the wire outlet direction and the wire feeding direction are kept consistent, the situation that the welding wire is twisted or blocked due to the inconsistent direction in the conveying process is avoided, and the welding wire can be continuously used. The welding wires on the wire feeding disc of the welding machine are gradually reduced, the height of the wire feeding disc of the welding machine can be automatically reduced through the wire feeding synchronizing mechanism, the wire feeding direction of the welding wires and the wire discharging direction of the wire feeding disc of the welding machine can be basically located on the same straight line, and the situation that the wire drawing resistance is sharply increased due to the too large stretching angle of the welding wires is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric welding machine technology, and in particular to an inverter welding machine with a wire feeding function structure. Background Technology

[0002] An inverter welding machine is an advanced welding device that uses high-frequency inverter technology to convert industrial frequency power into high-frequency power suitable for welding, thereby achieving an efficient and stable welding process. It can precisely control welding current and voltage, making the welding process more stable and the welding quality higher. Through microprocessor control, the inverter welding machine can realize a variety of welding processes, such as pulse welding and short-circuit transition welding.

[0003] Chinese Patent Publication No. CN214769579U discloses a wire feeding structure for an automatic wire feeding welding machine, including a receiving cavity, a winding reel, a wire inlet guide, a fixed frame, a wire outlet guide, and a driving device. The winding reel is rotatably disposed in the receiving cavity, and the fixed frame is fixed to the inner wall of the receiving cavity. The driving device includes an output wheel and a driven wheel. The fixed frame includes a first mounting hole, a second mounting hole, and a pressure plate. The central axes of the wire inlet and wire outlet guides coincide with the common tangent of the output wheel and the driven wheel. The output wheel and the driven wheel are rotatably disposed inside the fixed frame. The wire inlet guide is fixed to the first mounting hole, one end of the wire outlet guide is fixed to the second mounting hole, and the other end of the wire outlet guide is fixed to the inner wall of the receiving cavity. The pressure plate can press or release the driven wheel. In contrast to traditional methods that set an excessively large relative distance between the working plane and the winding reel, this invention places the center of the winding reel directly opposite the central axes of the wire inlet and wire outlet guides. Even if the welding wire is located at any point on the winding reel, excessive relative displacement will not occur, preventing damage to the welding wire.

[0004] In the above-mentioned technology, the center of the winding reel is aligned with the central axis of the wire inlet and outlet guide tubes. As the welding wire is consumed, the angle of the welding wire will not change too much, which reduces the risk of welding wire damage to a certain extent. However, as the welding wire is gradually consumed, the wire pulling resistance is constantly changing, and the maximum value of the wire pulling resistance is difficult to control precisely, so there is still a risk of welding wire breakage. Therefore, this utility model discloses an inverter welding machine with a wire feeding function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an inverter welding machine with a wire feeding function to solve the problem mentioned in the background art that in the traditional electric welding machine, the wire feeding structure is constantly changing as the welding wire is gradually consumed, and the maximum value of the wire pulling resistance is difficult to control precisely, thus still posing a risk of welding wire breakage.

[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0007] An inverter welding machine with a wire feeding function includes an assembled housing, a wire feeding synchronization mechanism, a welding machine wire feeding assembly, and a welding machine wire feeding reel. The wire feeding synchronization mechanism and the welding machine wire feeding assembly are installed inside the assembled housing. The welding machine wire feeding reel is detachably connected to the wire feeding synchronization mechanism. The welding wire drawn from the welding machine wire feeding reel is transmitted to the welding area via the welding machine wire feeding assembly.

[0008] The wire feeding synchronization mechanism includes two precision lead screws fixed to the bottom wall of the assembled housing. The outer side of each precision lead screw is threaded with an internal threaded cylinder. The outer side of each internal threaded cylinder is fitted with a first bevel gear and a right-angle plate. The other side of each right-angle plate is rotatably fitted with a transmission shaft. One end of each transmission shaft is fixed with a second bevel gear. The second bevel gear meshes with the adjacent first bevel gear. A welding machine wire feeding disc is installed between the two transmission shafts.

[0009] As a further embodiment of this utility model, the wire feeding synchronization mechanism further includes two guide rods fixed to the bottom wall of the assembled housing. Guide sleeves are slidably sleeved on the outer side of each guide rod, and the guide sleeves are fixedly embedded in the side wall of the adjacent right-angle plate.

[0010] As a further embodiment of this utility model, a semi-circular bushing is fixed on both sides of the wire feeding disc of the welding machine. A second threaded hole is opened in the middle of the semi-circular bushing. A bolt is connected to the inner thread of the second threaded hole. The transmission shaft is adapted to the inner diameter structure of the semi-circular bushing, and a first threaded hole is opened on the transmission shaft corresponding to the second threaded hole.

[0011] As a further embodiment of this utility model, the welding machine wire feeding assembly includes a wire feeding box fixed to the bottom of the assembled housing. A wire inlet tube and a wire outlet tube are respectively fixedly embedded on both sides of the wire feeding box. A welding wire is passed through the wire inlet tube and the wire outlet tube. The end of the wire outlet tube away from the wire feeding box extends to the outside of the assembled housing.

[0012] As a further embodiment of this utility model, the welding machine wire feeding assembly further includes an active wire pressing roller and a driven wire pressing roller rotatably embedded in the inner wall of the wire feeding box on the same side, and a drive motor fixed on the outside of the wire feeding box. The output end of the drive motor is fixedly connected to the active wire pressing roller, and the welding wire is held between the active wire pressing roller and the driven wire pressing roller.

[0013] As a further embodiment of this utility model, a main line bracket is fixed on the bottom wall of the assembled housing and located between the welding machine wire feeding tray and the welding machine wire feeding assembly. The inner diameter of the main line bracket gradually narrows from the bottom wall of the assembled housing upwards.

[0014] As a further embodiment of this utility model, the upper side of the assembled housing is provided with an opening, the edge of which is screwed to a welding machine housing cover, and a handrail is fixed to the upper side of the welding machine housing cover.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides an inverter welding machine with a wire feeding function structure. After the welding wire is drawn out from the welding machine's wire feeding reel, it is transmitted to the welding area through the welding machine's wire feeding assembly. The wire output and wire feeding directions are consistent, avoiding twisting or jamming of the welding wire due to inconsistent directions during transmission. Moreover, as the welding wire is continuously used, the amount of welding wire on the welding machine's wire feeding reel gradually decreases, and the height of the welding machine's wire feeding reel will automatically decrease through the wire feeding synchronization mechanism. This can keep the wire feeding direction and the wire output direction of the welding machine's wire feeding reel basically on the same straight line, avoiding a sharp increase in wire pulling resistance due to excessive wire stretching angle, thereby effectively reducing the risk of welding wire breakage. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a side sectional view of an inverter welding machine with a wire feeding function according to the present invention.

[0018] Figure 2 This utility model relates to an inverter welding machine with a wire feeding function. Figure 1 Cross-sectional view of the structure along the AA direction;

[0019] Figure 3 This is a three-dimensional structural diagram of the welding machine wire feeding assembly in an inverter welding machine with a wire feeding function according to the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the wire feeding disc in an inverter welding machine with a wire feeding function according to the present invention.

[0021] Figure 5 This is a top view of the right-angle plate in an inverter welding machine with a wire feeding function according to the present invention.

[0022] Figure 6 This utility model relates to an inverter welding machine with a wire feeding function. Figure 2 Enlarged view of the structure at point B in the middle.

[0023] The components represented by each number in the attached diagram are listed below: 1. Assembled housing; 2. Wire feeding synchronization mechanism; 3. Welding machine wire feeding assembly; 4. Welding machine wire feeding reel; 21. Precision lead screw; 22. Internal threaded cylinder; 23. First bevel gear; 24. Right angle plate; 25. Drive shaft; 26. Second bevel gear; 27. Guide rod; 28. Guide sleeve; 41. Semi-circular bushing; 42. Second threaded hole; 43. Bolt; 29. ​​First threaded hole; 31. Wire feeding box; 32. Wire inlet cylinder; 33. Wire outlet cylinder; 34. Active wire pressure roller; 35. Driven wire pressure roller; 36. Drive motor; 11. Main line bracket; 12. Welding machine housing cover; 13. Handrail. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-6 This utility model provides an inverter welding machine with a wire feeding function structure, including an assembled housing 1, a wire feeding synchronization mechanism 2, a welding machine wire feeding assembly 3 and a welding machine wire feeding disc 4. The upper side of the assembled housing 1 is provided with an opening, and a welding machine housing cover 12 is fixed to the edge of the opening with screws. A handrail 13 is fixed to the upper side of the welding machine housing cover 12.

[0026] Specifically, the welding machine housing cover 12 is fixed to the edge of the opening with screws, which can effectively protect the internal structure and components of the welding machine and prevent dust, debris and other objects from entering. It also increases the overall aesthetics of the equipment. The handrail 13 makes it convenient for operators to carry and move the welding machine, improving the portability of the equipment. When necessary, the welding machine housing cover 12 can be removed to easily replace the welding machine wire feed spool 4.

[0027] Furthermore, a wire feeding synchronization mechanism 2 and a welding machine wire feeding assembly 3 are installed inside the assembled housing 1. A main line bracket 11 is fixed on the bottom wall of the assembled housing 1 between the welding machine wire feeding disc 4 and the welding machine wire feeding assembly 3. The inner diameter of the main line bracket 11 gradually narrows from the bottom wall of the assembled housing 1 upwards.

[0028] Specifically, the main wire support 11 with a gradually narrowing inner diameter has an inverted "V" or inverted "U" shape, which can effectively guide and support the welding wire, ensuring that the welding wire stays on the correct path during transmission. This makes the welding wire less affected by the width of the welding machine wire feed tray 4, avoiding wire feeding problems or welding quality issues caused by excessive wire deviation, and effectively reducing the risk of welding wire breakage.

[0029] Furthermore, the welding machine wire feeding assembly 3 includes a wire feeding box 31 fixed to the bottom of the assembled housing 1. A wire inlet cylinder 32 and a wire outlet cylinder 33 are respectively fixedly embedded on both sides of the wire feeding box 31. A welding wire is passed through the wire inlet cylinder 32 and the wire outlet cylinder 33. The end of the wire outlet cylinder 33 away from the wire feeding box 31 extends to the outside of the assembled housing 1.

[0030] Specifically, after the welding wire is drawn out from the wire feed spool 4 of the welding machine, it first passes through the wire feed spool 32. The function of the wire feed spool 32 is to smoothly introduce the welding wire into the wire feed box 31. The wire output spool 33 is installed on the other side of the wire feed box 31 and is used to guide the welding wire from the inside of the wire feed box 31 to the outside. It is worth noting that the wire feed spool 32 and the wire output spool 33 are located on the same straight line to limit the wire feeding direction.

[0031] Furthermore, the welding machine wire feeding assembly 3 also includes an active wire pressing roller 34 and a driven wire pressing roller 35 rotatably embedded in the inner wall on the same side of the wire feeding box 31, and a drive motor 36 fixed on the outside of the wire feeding box 31. The output end of the drive motor 36 is fixedly connected to the active wire pressing roller 34, and the welding wire is clamped between the active wire pressing roller 34 and the driven wire pressing roller 35.

[0032] Specifically, when the drive motor 36 starts, its output end drives the active wire pressing roller 34 to rotate. The rotation of the active wire pressing roller 34 drives the driven wire pressing roller 35 to rotate in the opposite direction through the friction of the welding wire. Through the clamping and rotation of the active wire pressing roller 34 and the driven wire pressing roller 35, the welding wire can be smoothly conveyed forward, passing through the wire inlet spool 32 and the wire outlet spool 33, and finally reaching the welding area. It is worth noting that both the active wire pressing roller 34 and the driven wire pressing roller 35 are provided with circumferentially arranged annular grooves. The annular grooves are used to limit the left and right positions of the welding wire to prevent the welding wire from deviating in direction during the transmission process.

[0033] Furthermore, a welding machine wire feeding reel 4 is detachably connected to the wire feeding synchronization mechanism 2. The welding wire drawn from the welding machine wire feeding reel 4 is transmitted to the welding area via the welding machine wire feeding assembly 3. The wire feeding synchronization mechanism 2 includes two precision lead screws 21 fixed to the bottom wall of the assembled housing 1. The outer side of each precision lead screw 21 is threaded with an internal threaded cylinder 22. The outer side of each internal threaded cylinder 22 is fitted with a first bevel gear 23 and a right angle plate 24. The other side of each right angle plate 24 is rotatably fitted with a transmission shaft 25. One end of each transmission shaft 25 is fixed with a second bevel gear 26. The second bevel gear 26 meshes with the adjacent first bevel gear 23, and a welding machine wire feeding reel 4 is installed between the two transmission shafts 25.

[0034] Specifically, the welding machine wire feed reel 4 is pulled and rotated to release the welding wire. Simultaneously, the wire feed reel 4 drives the second bevel gear 26 to mesh with the first bevel gear 23. The first bevel gear 23 drives the internal threaded cylinder 22 to engage with the precision lead screw 21. As the welding wire is continuously used, the amount of welding wire on the wire feed reel 4 gradually decreases. The height of the wire feed reel 4 is automatically lowered by the wire feeding synchronization mechanism 2. The internal threaded cylinder 22 moves downwards along the precision lead screw 21, ensuring that the height of the wire feed reel 4 gradually decreases. This maintains that the wire feeding direction and the wire exit direction of the wire feed reel 4 are always on the same straight line. It is worth noting that to maintain the change in the radius of the welding wire coil... The descent height of the wire feeder 4 is kept as consistent as possible with that of the welding machine. The precision lead screw 21 adopts millimeter-level precision, and the radius of the second bevel gear 26 can be designed to be smaller than that of the first bevel gear 23 for speed reduction transmission. This avoids excessive changes in the wire stretching angle caused by inaccurate height adjustment. On the other hand, since the wire feeder 4 descends at a uniform speed, while the reduction of the wire coil radius is a non-linear process that gradually accelerates, the change in the wire coil radius cannot be completely synchronized with the descent height of the wire feeder 4. However, the wire feeding synchronization mechanism 2 can significantly reduce the maximum value of the wire stretching angle, thereby effectively reducing the risk of wire breakage and improving welding quality.

[0035] Furthermore, the wire feeding synchronization mechanism 2 also includes two guide rods 27 fixed to the bottom wall of the assembled housing 1. Guide sleeves 28 are slidably sleeved on the outer side of each guide rod 27. The guide sleeves 28 are fixedly embedded on the side wall of the adjacent right angle plate 24.

[0036] Specifically, when the wire feeding disc 4 of the welding machine moves up and down during the wire feeding process, the guide sleeve 28 slides along the guide rod 27, which can keep the movement path of the right angle plate 24 straight.

[0037] Furthermore, a semi-circular bushing 41 is fixed on both sides of the wire feeding disc 4 of the welding machine. A second threaded hole 42 is opened in the middle of the semi-circular bushing 41. A bolt 43 is internally threaded in the second threaded hole 42. The transmission shaft 25 is adapted to the inner diameter structure of the semi-circular bushing 41, and a first threaded hole 29 is opened on the transmission shaft 25 corresponding to the second threaded hole 42.

[0038] Specifically, the welding machine wire feed disc 4 is firmly fixed on the transmission shaft 25 by the cooperation of the semi-circular bushing 41 and the bolt 43, ensuring that the welding machine wire feed disc 4 and the transmission shaft 25 will not loosen or fall off during the wire feeding process. The transmission shaft 25 rotates under the drive of the welding machine wire feed disc 4, and transmits power to the wire feeding synchronization mechanism 2 through the connection with the semi-circular bushing 41.

[0039] It is worth noting that when installing the welding machine wire feeder 4, align the bolt 43 with the second threaded hole 42 on the semi-circular bushing 41 and the first threaded hole 29 on the drive shaft 25, and tighten the bolt 43 with a wrench or other tools to ensure that the welding machine wire feeder 4 is firmly fixed on the drive shaft 25. When disassembling the welding machine wire feeder 4, locate the bolts 43 on the semi-circular bushings 41 on both sides of the welding machine wire feeder 4, loosen and remove the bolts 43 with a wrench or other suitable tools, and after removing the bolts 43, gently rotate the welding machine wire feeder. 4. Loosen it from the drive shaft 25 and carefully remove the welding machine wire feed spool 4 to avoid collision with surrounding parts. It is worth noting that when replacing the welding machine wire feed spool 4, the welding machine wire feed spool 4 needs to be rotated in the opposite direction first so that the welding machine wire feed spool 4 reaches the highest position before the welding wire is led out. On the other hand, the precision lead screw 21 has an external thread within the allowable height adjustment range of the welding machine wire feed spool 4, and the upper and lower parts of the external thread can be additionally equipped with a limiting structure to limit the maximum stroke of the welding machine wire feed spool 4.

[0040] Working principle:

[0041] In use, the drive motor 36 drives the active wire pressure roller 34 to rotate. The active wire pressure roller 34 drives the driven wire pressure roller 35 to rotate in the opposite direction by friction. This allows the welding wire to be transmitted forward through the wire feed cylinder 32 and the wire output cylinder 33 into the welding area. The direction of wire feeding is on the same straight line as the direction of wire output from the self-welding machine's wire feed reel 4. During this process, the wire transmission drives the welding machine's wire feed reel 4 to rotate. The welding machine's wire feed reel 4 drives the transmission shaft 25 to rotate via the bolt 43. The transmission shaft 25 drives the second bevel gear 26 to rotate. The second bevel gear 26 drives the first bevel gear 23 to rotate. The first bevel gear 23 drives the internal threaded cylinder 22 to engage with the precision lead screw 21. The height of the welding machine's wire feed reel 4 can be slowly lowered, keeping the direction of wire feeding on the same straight line as the direction of wire output from the self-welding machine's wire feed reel 4. This avoids the problem that as the welding wire is used up, the horizontal wire pulling resistance will gradually increase, which may cause the welding wire to break and affect the normal operation of the welding machine.

Claims

1. An inverter welding machine with wire feeding function structure, characterized in that, The utility model provides a welding machine wire feeding device, which comprises an assembled shell (1), a wire feeding synchronization mechanism (2), a welding machine wire feeding assembly (3) and a welding machine wire feeding disc (4), the wire feeding synchronization mechanism (2) and the welding machine wire feeding assembly (3) are installed in the assembled shell (1), the welding machine wire feeding disc (4) is detachably connected to the wire feeding synchronization mechanism (2), and welding wire led out from the welding machine wire feeding disc (4) is transmitted to a welding area through the welding machine wire feeding assembly (3); The wire feeding synchronization mechanism (2) comprises two precision lead screws (21) fixed to the bottom wall of the assembled shell (1), the outer sides of the precision lead screws (21) are threadedly connected with internal thread cylinders (22), the outer sides of the internal thread cylinders (22) are sleeved with first bevel gears (23) and right-angle plates (24), the other sides of the right-angle plates (24) are rotatably embedded with transmission shafts (25), one end of each transmission shaft (25) is fixedly connected with a second bevel gear (26), the second bevel gear (26) is meshedly connected with the adjacent first bevel gear (23), and the welding machine wire feeding disc (4) is installed between the two transmission shafts (25).

2. The inverter welding machine with wire feeding function structure according to claim 1, characterized in that: The wire feeding synchronization mechanism (2) further comprises two guide rods (27) fixed to the bottom wall of the assembled shell (1), the outer sides of the guide rods (27) are slidably sleeved with guide sleeves (28), and the guide sleeves (28) are fixedly embedded in the side walls of the adjacent right-angle plates (24).

3. The inverter welding machine with wire feeding function structure according to claim 1, characterized in that: The two sides of the welding machine wire feeding disc (4) are fixedly connected with semicircular shaft sleeves (41), the middle parts of the semicircular shaft sleeves (41) are provided with second threaded holes (42), the second threaded holes (42) are threadedly connected with bolts (43), the transmission shafts (25) are matched with the inner diameter structures of the semicircular shaft sleeves (41), and the transmission shafts (25) are provided with first threaded holes (29) corresponding to the second threaded holes (42).

4. The inverter welder with wire feeding function structure according to claim 1, characterized in that: The welding machine wire feeding assembly (3) comprises a wire feeding box (31) fixed to the bottom of the assembled shell (1), the two sides of the wire feeding box (31) are fixedly embedded with wire inlet cylinders (32) and wire outlet cylinders (33), respectively, welding wire is arranged between the wire inlet cylinders (32) and the wire outlet cylinders (33), and one end of the wire outlet cylinder (33) away from the wire feeding box (31) extends to the outside of the assembled shell (1).

5. The inverter welding machine with wire feeding function structure according to claim 4, characterized in that: The welding machine wire feeding assembly (3) further comprises a driving pressure roller (34) and a driven pressure roller (35) rotatably embedded in the same side inner wall of the wire feeding box (31) and a driving motor (36) fixed to the outside of the wire feeding box (31), the output end of the driving motor (36) is fixedly connected with the driving pressure roller (34), and the driving pressure roller (34) and the driven pressure roller (35) clamp the welding wire therebetween.

6. The inverter welder with wire feeding function structure according to claim 1, characterized in that: A positive line support (11) is fixed to the bottom wall of the assembled shell (1) and located between the welding machine wire feeding disc (4) and the welding machine wire feeding assembly (3), and the inner diameter of the positive line support (11) is gradually narrowed from the bottom wall of the assembled shell (1) upwards.

7. The inverter welder with wire feeding function structure according to claim 1, characterized in that: The upper side of the assembled shell (1) is provided with an open edge, and a welding machine shell cover (12) is fixedly connected to the open edge by screws, and a handrail (13) is fixed to the upper side of the welding machine shell cover (12).

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