Welding device with automatic positioning function

Abstract

The utility model relates to the technical field of welding machines, in particular to an automatic positioning welding device. The butt welding machine comprises a rack, butt welding machine equipment and two sets of automatic positioning devices. The butt welding machine equipment is mounted at the upper end of the rack; the two sets of automatic positioning devices are symmetrically installed at the two ends of the top of the rack, each automatic positioning device comprises a U-shaped piece, a limiting plate and a deviation rectifying mechanism, and each deviation rectifying mechanism comprises an electromagnet installation plate arranged below the corresponding U-shaped piece, a power assembly used for driving the electromagnet installation plate to horizontally move and a plurality of electromagnets installed on the electromagnet installation plate; a saw blade driving mechanism is installed on the upper portion of the inner side of the U-shaped piece, and a first electric push rod used for driving the saw blade driving mechanism to ascend and descend is installed on the U-shaped piece. According to the technical scheme, the saw blade is driven by an electromagnet through the arranged deviation rectifying mechanism, a traditional rigid connection mode for driving is changed, and the damage probability of the saw blade is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding machine technical field especially relates to a kind of automatic positioning's welding device. BACKGROUND

[0002] In the field of metal processing, woodworking manufacturing, saw blade as core cutting tool, its welding quality directly affects service life and operating efficiency. The traditional saw blade welding is mostly using manual butt welding process or general butt welding equipment, there are many technical limitations.

[0003] In recent years, although there are some automated butt welding equipment, there are still problems of complex structure, high cost or insufficient compatibility, which is difficult to popularize in small and medium-sized enterprises. And the traditional saw blade butt welding machine usually uses artificial positioning of saw blade, the operation is more cumbersome, therefore, it is urgent to develop a kind of butt welding machine capable of realizing automatic positioning of saw blade, to improve the welding efficiency and meet the industrialization needs of multiple scenes. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems in the background art, and provides an automatic positioning welding device.

[0005] The technical scheme of the utility model, an automatic positioning welding device, comprises a rack, a butt welding machine device and two sets of automatic positioning devices.

[0006] The butt welding machine device is installed on the upper end of the rack. The two sets of automatic positioning devices are symmetrically installed on the top of the rack at both ends. The automatic positioning device comprises a U-shaped piece, a limiting plate and a deviation rectifying mechanism. The U-shaped piece is connected with the rack. The cross section of the U-shaped piece is "U" shaped. The front side and both ends of the U-shaped piece are provided with openings. The deviation rectifying mechanism comprises an electromagnet mounting plate arranged below the U-shaped piece, a power assembly for driving the electromagnet mounting plate to move horizontally, and a plurality of electromagnets mounted on the electromagnet mounting plate. The limiting plate is located at the end of the U-shaped piece. A saw blade driving mechanism is installed on the upper part of the inner side of the U-shaped piece. The saw blade driving mechanism is connected with the limiting plate. A first electric push rod is installed on the U-shaped piece for driving the saw blade driving mechanism to lift.

[0007] Preferably, the saw blade driving mechanism comprises a rotating frame, a servo motor and an upper anti-skid roller shaft. The upper anti-skid roller shaft is rotatably installed on the rotating frame. The servo motor is installed at the end of the rotating frame, and the output shaft of the servo motor is connected with the rotating shaft of the upper anti-skid roller shaft.

[0008] Preferably, a plurality of lower anti-skid roller shafts are rotatably installed side by side at the lower end of the inner side of the U-shaped piece.

[0009] Preferably, the power assembly comprises a second electric push rod, a guide rod, a connecting sliding block, a spring, a push column, a wedge-shaped block and two limiting blocks, wherein the second electric push rod is installed on the rack, the two limiting blocks are arranged side by side on the electromagnet mounting plate, the two ends of the guide rod are connected with the two limiting blocks respectively, the connecting sliding block is slidingly installed on the guide rod and connected with the output shaft of the second electric push rod, the spring is sleeved and installed on the guide rod, the wedge-shaped block is connected with the U-shaped piece, and the push column is connected with the end of the electromagnet mounting plate.

[0010] Preferably, the rack is provided with a back plate, a transparent light isolation cover is rotatably installed on the front side of the back plate, the bottom end and the side adjacent to the back plate of the transparent light isolation cover are provided with openings, and saw blade perforations are formed in the two ends of the transparent light isolation cover.

[0011] Preferably, the butt welding machine device comprises an electric control box, a first air cylinder, a second air cylinder, a moving clamp block, a static clamp block, a moving electrode and a static electrode, wherein the electric control box is installed on the rack, the first air cylinder and the second air cylinder are installed on the back plate, the moving clamp block and the static clamp block are connected with the output shafts of the first air cylinder and the second air cylinder respectively, and the moving electrode and the static electrode are installed on the back plate and located below the moving clamp block and the static clamp block respectively.

[0012] Compared with the prior art, the utility model has the advantages that the deviation rectifying mechanism is driven by the electromagnet, the traditional rigid connection mode is changed, the damage probability of the saw blade is reduced, the automatic positioning of the saw blade is realized, and the two saw blades can be accurately butt-jointed. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 and Figure 2 are structure schematic diagrams of the utility model.

[0014] Figure 3 is a structure schematic diagram of the utility model after the transparent light isolation cover is rotated and opened.

[0015] Figure 4 is Figure 2 is a local enlarged structure schematic diagram of A of the utility model.

[0016] Reference numerals: 1. Frame; 2. Electrical control box; 3. Transparent light shield; 301. Saw blade perforation; 4. Back plate; 51. First cylinder; 52. Second cylinder; 61. Moving clamping block; 62. Stationary clamping block; 71. Moving electrode; 72. Stationary electrode; 8. U-shaped component; 9. First electric push rod; 10. Second electric push rod; 11. Rotating frame; 12. Servo motor; 13. Upper anti-slip roller shaft; 14. Limiting plate; 15. Lower anti-slip roller shaft; 16. Guide rod; 17. Connecting slider; 18. Spring; 19. Limiting block; 20. Push column; 21. Wedge block; 22. Electromagnet; 23. Electromagnet mounting plate. Detailed Implementation

[0017] Example 1

[0018] like Figures 1-4 As shown, the automatic positioning welding device proposed in this embodiment includes a frame 1, a welding machine, and two sets of automatic positioning devices.

[0019] The welding machine is installed on the upper part of the frame 1; two sets of automatic positioning devices are symmetrically installed at both ends of the top of the frame 1. The automatic positioning devices include a U-shaped component 8, a limiting plate 14, and a correction mechanism. The U-shaped component 8 is connected to the frame 1, and its cross-section is U-shaped. The front and both ends of the U-shaped component 8 are open. The correction mechanism includes an electromagnet mounting plate 23 located below the U-shaped component 8, a power component for driving the electromagnet mounting plate 23 to move horizontally, and multiple electromagnets 22 mounted on the electromagnet mounting plate 23. The limiting plate 14 is located at the end of the U-shaped component 8. A saw blade driving mechanism is installed on the upper inner side of the U-shaped component 8. The saw blade driving mechanism is connected to the limiting plate 14. The component 8 is equipped with a first electric push rod 9 for driving the saw blade drive mechanism to lift and lower. The power assembly includes a second electric push rod 10, a guide rod 16, a connecting slider 17, a spring 18, a push column 20, a wedge block 21, and two limit blocks 19. The second electric push rod 10 is mounted on the frame 1. The two limit blocks 19 are arranged side by side on the electromagnet mounting plate 23. The two ends of the guide rod 16 are connected to the limit blocks 19 on both sides respectively. The connecting slider 17 is slidably mounted on the guide rod 16 and connected to the output shaft of the second electric push rod 10. The spring 18 is sleeved on the guide rod 16. The wedge block 21 is connected to the U-shaped component 8. The push column 20 is connected to the end of the electromagnet mounting plate 23.

[0020] Saw blade welding is a process that uses resistance heating to join metals. It is mainly used to repair broken saw blades or extend their length. Its core is resistance welding technology, which combines mechanical clamping and current control to achieve efficient welding. The heat generated when current passes through the contact surface of the saw blade is used to rapidly heat the contact surface to a plastic or molten state. Then, pressure is applied to fuse the two saw blade sections together to form a dense weld.

[0021] Further, the technical scheme is further provided with a PLC controller, which is used for controlling the equipment and realizing data analysis and processing.

[0022] The approximate process of welding is as follows:

[0023] Pre-pressing stage: clamp the saw blade to ensure that the contact surface is in close contact; power on and heat, large current passes through the contact surface to generate high temperature to soften the metal; the current flows from the transformer secondary coil, the moving electrode, the saw blade contact surface, the static electrode, and returns to the transformer to form a closed loop.

[0024] Top forging pressure: high pressure is applied at the moment of power off to squeeze out the oxide layer and impurities and complete metallurgical bonding.

[0025] Cooling and shaping: natural cooling or forced cooling.

[0026] It should be noted that in order to realize the top forging pressure, the first air cylinder 51, the moving clamp block 61 and the moving electrode 71 are movably installed, and the mounting plate is slidably installed on the back plate 4, the first air cylinder 51, the moving clamp block 61 and the moving electrode 71 are installed on the mounting plate, and the air cylinder for driving the mounting plate to move is also installed on the back plate 4.

[0027] In this embodiment, when positioning the saw blade, first, the two saw blades are placed on the two U-shaped pieces 8 respectively, then the electromagnet 22 is powered on, and the electromagnet 22 generates magnetism to adsorb the saw blade, the saw blade needs to be made of high carbon steel or alloy steel, such steel contains iron element and has ferromagnetism, so it is easy to be adsorbed by the magnet; the second electric push rod 10 is started to work to drive the connecting sliding block 17 to move and in turn drive the electromagnet mounting plate 23, the electromagnet 22 and the saw blade to move to one side of the inner wall of the U-shaped piece 8, in this process, the push column 20 is in contact with the inclined surface of the wedge block 21, so that the electromagnet mounting plate 23 moves to one side of the limiting plate 14, when the electromagnet mounting plate 23 moves to the limited position, the saw blade is limited by the limiting plate 14 and the inner wall of the U-shaped piece 8 at this time, thereby realizing automatic positioning of the saw blade.

[0028] After the saw blade completes the positioning work, it is conveyed to the welding position through the saw blade driving mechanism.

[0029] Embodiment two

[0030] As Figure 4As shown, this embodiment proposes an automatic positioning welding device. Compared with the first embodiment, in this embodiment, the saw blade driving mechanism includes a rotating frame 11, a servo motor 12, and an upper anti-slip roller shaft 13. The upper anti-slip roller shaft 13 is rotatably mounted on the rotating frame 11. The rotating frame 11 is fixedly connected to the output shaft of the first electric push rod and the limiting plate 14. The servo motor 12 is mounted at the end of the rotating frame 11, and its output shaft is connected to the rotating shaft of the upper anti-slip roller shaft 13. Multiple lower anti-slip roller shafts 15 are rotatably mounted side by side on the lower inner side of the U-shaped part 8. The first electric push rod 9 is started to drive the upper anti-slip roller shaft 13 to move downward to clamp the saw blade. At the same time, the servo motors 12 on both sides are started to drive the upper anti-slip roller shaft 13 to rotate. During the rotation, the upper anti-slip roller shaft 13 can realize the conveying of the saw blade. When the two saw blades at both ends contact, the rotation speed of the servo motor shaft 12 is small and the torque increases. The PLC controller can automatically detect the two saw blades at both ends to achieve contact alignment by acquiring the data of the servo motor 12.

[0031] Furthermore, a third servo motor for driving the rotation of the lower anti-slip roller shaft 15 located directly below the upper anti-slip roller shaft 13 can be installed on the U-shaped part 8.

[0032] Example 3

[0033] like Figures 1-3 As shown in the figure, the automatic positioning welding device proposed in this embodiment, compared with the first embodiment, has a back plate 4 on the frame 1, and a transparent light shield 3 is rotatably installed on the front side of the back plate 4. The bottom end of the transparent light shield 3 and the side adjacent to the back plate 4 are open. Both ends of the transparent light shield 3 are provided with saw blade through holes 301. A solar film is pasted on the surface of the transparent light shield 3. The transparent light shield 3 and the solar film are used to block the strong light and heat of welding, and play a good protective role.

[0034] The butt welding machine includes an electrical control box 2, a first cylinder 51, a second cylinder 52, a moving clamp block 61, a stationary clamp block 62, a moving electrode 71, and a stationary electrode 72. The electrical control box 2 is mounted on the frame 1. The first cylinder 51 and the second cylinder 52 are both mounted on the back plate 4. The moving clamp block 61 and the stationary clamp block 62 are respectively connected to the output shafts of the first cylinder 51 and the second cylinder 52. The moving electrode 71 and the stationary electrode 72 are both mounted on the back plate 4 and are located below the moving clamp block 61 and the stationary clamp block 62, respectively. The first cylinder 51, the second cylinder 52, the moving clamp block 61, the stationary clamp block 62, the moving electrode 71, and the stationary electrode 72 are all located inside the electrical control box 2. The butt welding machine is a saw blade butt welding machine. Its specific structure and working principle are existing publicly available technologies, so they will not be described in detail here.

[0035] The embodiment of the utility model is described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. An automatically positioned welding device, characterized in that, It comprises a rack (1), a butt welding machine device and two sets of automatic positioning devices; The butt welding machine device is installed on the upper end of the rack (1); the two sets of automatic positioning devices are symmetrically installed on the top of the two ends of the rack (1), and the automatic positioning device comprises a U-shaped piece (8), a limiting plate (14) and a deviation rectifying mechanism, wherein the U-shaped piece (8) is connected with the rack (1), the cross section of the U-shaped piece (8) is "U" shaped, the front side and the two ends of the U-shaped piece (8) are provided with openings, the deviation rectifying mechanism comprises an electromagnet mounting plate (23) arranged below the U-shaped piece (8), a power assembly for driving the horizontal movement of the electromagnet mounting plate (23) and a plurality of electromagnets (22) mounted on the electromagnet mounting plate (23), and the limiting plate (14) is located at the end of the U-shaped piece (8); a saw blade driving mechanism is installed on the upper side of the inner side of the U-shaped piece (8), the saw blade driving mechanism is connected with the limiting plate (14), and a first electric push rod (9) for driving the lifting of the saw blade driving mechanism is installed on the U-shaped piece (8).

2. An automatically positioned welding device according to claim 1, characterized in that The saw blade driving mechanism comprises a rotating frame (11), a servo motor (12) and an upper anti-skid roller shaft (13), the upper anti-skid roller shaft (13) is rotatably installed on the rotating frame (11), and the servo motor (12) is installed at the end of the rotating frame (11) and its output shaft is connected with the rotating shaft of the upper anti-skid roller shaft (13).

3. An automatically positioned welding device according to claim 2, wherein, A plurality of lower anti-skid roller shafts (15) are rotatably installed side by side at the lower end of the inner side of the U-shaped piece (8).

4. An automatically positioned welding device according to claim 1, wherein The power assembly comprises a second electric push rod (10), a guide rod (16), a connecting sliding block (17), a spring (18), a push column (20), a wedge-shaped block (21) and two limiting blocks (19), wherein the second electric push rod (10) is installed on the rack (1), the two limiting blocks (19) are arranged side by side on the electromagnet mounting plate (23), the two ends of the guide rod (16) are connected with the two limiting blocks (19) respectively, the connecting sliding block (17) is slidably installed on the guide rod (16) and connected with the output shaft of the second electric push rod (10), the spring (18) is sleeved and installed on the guide rod (16), the wedge-shaped block (21) is connected with the U-shaped piece (8), and the push column (20) is connected with the end of the electromagnet mounting plate (23).

5. An automatically positioned welding device as defined in claim 1, wherein, A back plate (4) is arranged on the rack (1), a transparent light shielding cover (3) is rotatably installed on the front side of the back plate (4), the bottom end and the side adjacent to the back plate (4) of the transparent light shielding cover (3) are provided with openings, and saw blade perforations (301) are formed at the two ends of the transparent light shielding cover (3); a solar film is attached to the surface of the transparent light shielding cover (3).

6. An automatically positioned welding device according to claim 5, wherein, The butt welding machine device comprises an electric control box (2), a first air cylinder (51), a second air cylinder (52), a moving clamp block (61), a static clamp block (62), a moving electrode (71) and a static electrode (72), wherein the electric control box (2) is installed on a rack (1), the first air cylinder (51) and the second air cylinder (52) are both installed on a back plate (4), the moving clamp block (61) and the static clamp block (62) are connected with output shafts of the first air cylinder (51) and the second air cylinder (52) respectively, the moving electrode (71) and the static electrode (72) are both installed on the back plate (4) and are located below the moving clamp block (61) and the static clamp block (62) respectively; the first air cylinder (51), the second air cylinder (52), the moving clamp block (61), the static clamp block (62), the moving electrode (71) and the static electrode (72) are all located inside the electric control box (2).

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