Alloy frame welding device for table and chair processing

Abstract

The application discloses a kind of alloy frame welding devices for table and chair processing, including sealed door, sliding support, screw rod, clamping frame, the bottom of the sealed door is slidably connected with base plate, the upper surface of the base plate is fixedly connected with support plate, the sidewall of the support plate is slidably connected with welding frame, the upper surface of the sealed door is fixedly connected with compressed gas tank, the upper surface of the compressed gas tank is provided with electromagnetic check valve, the inside of the compressed gas tank is fixedly connected with second pressure relief valve and filter screen, the front end of the sealed door is fixedly connected with air pump.The application is provided with second pressure relief valve, so that the argon in the device can be filtered and separated from air by density, so that it can enter the sealed door again through the second pressure relief valve, thereby realizing the reuse of protective gas, which can save protective gas and achieve the effect of cost saving.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy processing technology, and in particular to an alloy frame welding device for table and chair processing. Background Technology

[0002] The alloy frame welding device for table and chair processing is a device that connects aluminum alloy frames through processes such as argon arc welding.

[0003] Existing devices of this type suffer from relatively low welding efficiency. For example, Chinese Patent Publication No. CN217142912U discloses a multi-degree-of-freedom mobile welding fixture based on table and chair welding technology. After welding one area, when welding another area, the welding table needs to be manually rotated to bring the other area closer to the user. During this process, the user pauses welding, resulting in relatively low welding efficiency. Therefore, this application proposes an alloy frame welding device for table and chair processing. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an alloy frame welding device for table and chair processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding device for alloy frames used in table and chair processing includes a sealing door, a sliding bracket, a lead screw, and a clamping frame. A base plate is slidably connected to the bottom of the sealing door, a support plate is fixedly connected to the upper surface of the base plate, a welding frame is slidably connected to the side wall of the support plate, a compressed air tank is fixedly connected to the upper surface of the sealing door, an electromagnetic one-way valve is provided on the upper surface of the compressed air tank, a second pressure relief valve and a filter screen are fixedly connected inside the compressed air tank, and an air pump is fixedly connected to the front end of the sealing door. A moving motor is also fixedly connected to the sliding bracket, a transmission gear set is fixedly connected to the output shaft of the moving motor, and a second swing gear set is rotatably connected to the sliding bracket. The lead screw is threadedly connected to a welded guide rail, and a sliding bracket is slidably connected to the welded guide rail. A sliding gear set is rotatably connected to the upper surface of the sliding bracket.

[0006] Preferably, a first swing gear set is fixedly connected to the second swing gear set, and a welding head is rotatably connected to the sliding bracket.

[0007] Preferably, a feed motor is also fixedly connected to the sliding bracket, and a feed transmission assembly and a feeding roller are fixedly connected to the output shaft of the feed motor. A welding wire roll is rotatably connected to the inner side of the sliding bracket.

[0008] Preferably, a lifting cylinder is fixedly connected to the inner side wall of the welding frame, the welding frame is rotatably connected to the lead screw, a clamping frame is fixedly connected to the output shaft of the lifting cylinder, and a clamping cylinder is fixedly connected to the clamping frame.

[0009] Preferably, a clamping block is fixedly connected to the output shaft of the clamping cylinder, and there are two clamping blocks, with a clamping rack fixedly connected to each clamping block.

[0010] Preferably, a clamping gear is rotatably connected to the clamping frame, and the clamping gear meshes with a clamping rack.

[0011] Preferably, a grinding plate is fixedly connected to the support plate, a grinding motor is fixedly connected to the grinding plate, a bevel gear in a grinding gear set is provided on the output shaft of the grinding motor, the grinding gear set consists of three meshing bevel gears, a grinding belt drive assembly is rotatably connected to the grinding plate, a grinding belt is provided on the grinding belt drive assembly, a spline shaft is fixedly and rotatably connected to the grinding plate, and a connecting sleeve is fixedly connected to the grinding belt drive assembly.

[0012] Preferably, the splined shaft is slidably connected to the grinding belt drive assembly, the grinding belt drive assembly is slidably connected to the grinding plate, one end of the two splined shafts near the grinding motor is fixedly connected to two other bevel gears in the grinding gear assembly, a grinding cylinder is fixedly connected to the lower surface of the grinding plate, and a grinding rack is fixedly connected to the output shaft of the grinding cylinder.

[0013] Preferably, the grinding rack is fixedly connected to the grinding belt drive assembly, and a lifting motor is fixedly connected to the upper surface of the welding frame.

[0014] Preferably, a lifting gear set is fixedly connected to the upper end of the lead screw, and a guide rod is also fixedly connected to the welding frame.

[0015] The present invention has the following beneficial effects: 1. By setting up a second pressure relief valve, the argon gas in this device can be filtered and separated from the air by its density, so that it can re-enter the sealing door through the second pressure relief valve, thereby realizing the reuse of protective gas. This can save protective gas and achieve cost savings.

[0016] 2. By setting welding guide rails, the welding head can automatically weld along a predetermined trajectory during welding, which can improve processing efficiency and avoid the problem of reduced efficiency caused by the need to adjust the welding position during welding.

[0017] 3. By setting a grinding belt, this device can remove the oxide layer on the surface of the aluminum alloy before welding, thus avoiding the oxide layer from affecting the strength of the welded joint and thereby improving the strength of the welded joint. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an alloy frame welding device for table and chair processing proposed in this invention. Figure 2 This is a schematic diagram of the internal structure of an alloy frame welding device for table and chair processing proposed in this invention. Figure 3 This is a schematic diagram of the welding frame of an alloy frame welding device for table and chair processing proposed in this invention; Figure 4 This is a schematic diagram of the welding guide rail of an alloy frame welding device for table and chair processing proposed in this invention; Figure 5 This is a schematic diagram showing the position of the moving motor in an alloy frame welding device for table and chair processing proposed in this invention. Figure 6 This is a schematic diagram of the grinding plate of an alloy frame welding device for table and chair processing proposed in this invention; Figure 7 for Figure 6 Enlarged view at point A; Figure 8 This is a schematic diagram showing the position of the grinding cylinder in an alloy frame welding device for table and chair processing proposed in this invention. Figure 9 This is a schematic diagram showing the position of the second pressure relief valve in an alloy frame welding device for table and chair processing proposed in this invention.

[0019] In the diagram: 1. Sealing door; 2. Air pump; 3. Compressed air tank; 4. Electromagnetic check valve; 5. Base plate; 6. Welding frame; 7. Guide rod; 8. Lifting motor; 9. Lifting gear set; 10. Lead screw; 11. Clamping block; 12. Clamping gear; 13. Clamping rack; 14. Welding guide rail; 15. Sliding gear set; 16. Lifting cylinder; 17. Clamping cylinder; 18. Moving motor; 19. Feed motor; 20. Feed transmission group; 21. Feeding roller; 22. Welding wire coil; 23. Welding head. 24. No. 1 swing gear set; 25. No. 2 swing gear set; 26. Transmission gear set; 27. Grinding belt; 28. No. 1 aluminum alloy frame; 29. ​​No. 2 aluminum alloy frame; 30. Support plate; 31. Grinding plate; 32. Grinding rack; 33. Variable direction gear; 34. Pressure relief valve; 35. Filter screen; 36. Grinding belt transmission group; 37. Grinding motor; 38. Grinding gear set; 39. Splined shaft; 40. Connecting sleeve; 41. Grinding cylinder; 42. Sliding bracket; 43. Clamping frame. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Example 1: A welding device for alloy frames used in table and chair processing includes a sealing door 1, a sliding bracket 42, a lead screw 10, and a clamping frame 43. A base plate 5 is slidably connected to the bottom of the sealing door 1, a support plate 30 is fixedly connected to the upper surface of the base plate 5, a welding frame 6 is slidably connected to the side wall of the support plate 30, a compressed air tank 3 is fixedly connected to the upper surface of the sealing door 1, an electromagnetic one-way valve 4 is provided on the upper surface of the compressed air tank 3, a second pressure relief valve 34 and a filter screen 35 are fixedly connected inside the compressed air tank 3, and an air pump 2 is fixedly connected to the front end of the sealing door 1.

[0022] A moving motor 18 is fixedly connected to the sliding bracket 42. A transmission gear set 26 is fixedly connected to the output shaft of the moving motor 18. A second oscillating gear set 25 is rotatably connected to the sliding bracket 42. A first oscillating gear set 24 is fixedly connected to the second oscillating gear set 25. A welding head 23 is rotatably connected to the sliding bracket 42. A feed motor 19 is also fixedly connected to the sliding bracket 42. A feed transmission set 20 and a feeding roller 21 are fixedly connected to the output shaft of the feed motor 19. A welding wire coil 22 is rotatably connected inside the sliding bracket 42.

[0023] A welded guide rail 14 is threaded onto the lead screw 10, and a sliding bracket 42 is slidably connected to the welded guide rail 14. A sliding gear set 15 is rotatably connected to the upper surface of the sliding bracket 42.

[0024] The rear end of the sealing door 1 is provided with a pipe for the passage of protective gas. When welding begins, the sealing door 1 is closed, thereby sealing the inside of the device and filling the inside of the device with protective gas to facilitate welding.

[0025] refer to Figure 6 The support plate 30 has a second aluminum alloy frame 29 positioned at its upper limit. Above the second aluminum alloy frame 29 is the first aluminum alloy frame 28. The two are welded together to form the finished aluminum alloy frame. When welding begins, the second aluminum alloy frame 29 is positioned on the support plate 30. The first aluminum alloy frame 28 is placed on top. The welding frame 6, which is slidably connected to the support plate 30, can then be slid into the device by the user. The lifting cylinder 16 is then activated, and its output rod retracts, causing the clamping block 11 to descend and approach the first aluminum alloy frame 28. The clamping cylinder 17 is then activated, causing its output shaft to retract.

[0026] The output rod of the clamping cylinder 17 is fixedly connected to the clamping rack 13. Therefore, the retraction of the output rod of the clamping cylinder 17 will drive the clamping rack 13 to move. Since the clamping rack 13 is fixedly connected to the clamping block 11, and the clamping gear 12 meshes between the two clamping racks 13, and the clamping blocks 11 are fixedly connected to each other in pairs and fixedly connected to the clamping rack 13, when one clamping block 11 moves, under the action of the clamping gear 12 and the clamping rack 13, the two clamping blocks 11 will move closer to each other, thereby clamping and returning the first aluminum alloy frame 28 to its original position.

[0027] At this point, the lifting cylinder 16 can be activated, causing the clamping block 11 to pull the first aluminum alloy frame 28 upward. Then, the grinding cylinder 41 can be activated. The output shaft of the grinding cylinder 41 extends, driving the grinding rack 32 to move. A reversing gear 33 connects the two grinding racks 32, and the racks mesh with each other. When one grinding rack 32 moves, it drives the other grinding rack 32 to move, thus allowing the two grinding racks 32 to move closer or further apart.

[0028] The grinding rack 32 is fixedly connected to the grinding belt drive assembly 36, while the grinding belt drive assembly 36 is slidably connected to the grinding plate 31. Therefore, when the two grinding racks 32 move away from or towards each other, the grinding belt drive assembly 36 will move away from or towards each other, thereby enabling the grinding belt drive assembly 36 to move.

[0029] Example 2: The splined shaft 39 is slidably connected to the grinding belt drive assembly 36, the grinding belt drive assembly 36 is slidably connected to the grinding plate 31, one end of the two splined shafts 39 near the grinding motor 37 is fixedly connected to the other two bevel gears in the grinding gear assembly 38, the lower surface of the grinding plate 31 is fixedly connected to the grinding cylinder 41, and the output shaft of the grinding cylinder 41 is fixedly connected to the grinding rack 32.

[0030] The grinding rack 32 is fixedly connected to the grinding belt drive assembly 36, and the upper surface of the welding frame 6 is fixedly connected to the lifting motor 8.

[0031] A grinding plate 31 is fixedly connected to the support plate 30. A grinding motor 37 is fixedly connected to the grinding plate 31. A bevel gear in a grinding gear set 38 is provided on the output shaft of the grinding motor 37. The grinding gear set 38 consists of three meshing bevel gears. A grinding belt drive assembly 36 is rotatably connected to the grinding plate 31. A grinding belt 27 is provided on the grinding belt drive assembly 36. A spline shaft 39 is fixedly and rotatably connected to the grinding plate 31. A connecting sleeve 40 is fixedly connected to the grinding belt drive assembly 36. A lifting gear set 9 is fixedly connected to the upper end of the lead screw 10. A guide rod 7 is also fixedly connected to the welding frame 6.

[0032] refer to Figure 6When the first aluminum alloy frame 28 is pulled upward, a distance will appear between it and the second aluminum alloy frame 29. When the grinding belt drive group 36 moves, the grinding belt 27 set on the grinding belt drive group 36 will be located between the first aluminum alloy frame 28 and the second aluminum alloy frame 29.

[0033] Then the grinding motor 37 can be started. The rotation of the output shaft of the grinding motor 37 will drive one of the bevel gears in the grinding gear set 38 to rotate. Since the three bevel gears of the grinding gear set 38 mesh with each other, when one bevel gear rotates, the other two bevel gears will also rotate, thereby driving the grinding belt drive set 36 to operate.

[0034] Example 3: A lifting cylinder 16 is fixedly connected to the inner wall of the welding frame 6. The welding frame 6 is rotatably connected to the lead screw 10. A clamping frame 43 is fixedly connected to the output shaft of the lifting cylinder 16, and a clamping cylinder 17 is fixedly connected to the clamping frame 43. Two clamping blocks 11 are fixedly connected to the output shaft of the clamping cylinder 17, and a clamping rack 13 is fixedly connected to each clamping block 11. A clamping gear 12 is rotatably connected to the clamping frame 43, and the clamping gear 12 meshes with the clamping rack 13.

[0035] Two clamping blocks 11 are fixedly connected to the output shaft of the clamping cylinder 17, and a clamping rack 13 is fixedly connected to each clamping block 11. When the grinding belt drive assembly 36 operates, it drives the grinding belt 27 to grind the surfaces of the first aluminum alloy frame 28 and the second aluminum alloy frame 29, thereby removing the oxide layer from the surface of the aluminum alloy.

[0036] After the oxide layer is removed, welding can proceed. The first aluminum alloy frame 28 is lowered using the lifting cylinder 16, and the lifting motor 8 is activated simultaneously. The output shaft of the lifting motor 8 is fixedly connected to one bevel gear of the lifting gear set 9, and the other bevel gear is fixedly connected to the lead screw 10. When the output shaft of the lifting motor 8 rotates, it drives the lead screw 10 to rotate. Since the welding guide rail 14 is threadedly connected to the lead screw 10, the rotation of the lead screw 10 will cause the welding guide rail 14 to move up or down.

[0037] refer to Figure 5 When the mobile motor 18 is turned on, its output shaft drives the transmission gear set 26 to rotate, which in turn drives the first oscillating gear set 24 and the second oscillating gear set 25 to rotate. Simultaneously, it also drives the sliding gear set 15 to rotate. (Reference) Figure 5The welding wire coil 22 is also driven by the moving motor 18. When the welding wire coil 22 rotates, it will cooperate with the feed motor 19. The rotation of the output shaft of the feed motor 19 will drive the feeding roller 21 to rotate, thereby causing the feeding roller 21 to pull the welding wire out of the welding wire coil 22. At the same time, the welding head 23 performs welding between the welding wire and the first aluminum alloy frame 28 and the second aluminum alloy frame 29.

[0038] refer to Figure 5 When the output shaft of the mobile motor 18 rotates, the transmission gear set 26 rotates, causing the sliding gear set 15 to rotate. (Refer to...) Figure 4 and Figure 5 The welding guide rail 14 has multiple teeth and a sliding groove. The upper side wall of the sliding bracket 42 has multiple spherical limiting blocks. When slidably connected with the welding guide rail 14, these limiting blocks are located within the welding guide rail 14, thus limiting the sliding bracket 42. Furthermore, when the welding guide rail 14 and the sliding bracket 42 are slidably connected, two sliding gear sets 15 mesh with each other, and the sliding gear set 15 closest to the welding guide rail 14 also meshes with the teeth on the welding guide rail 14.

[0039] Therefore, when the output shaft of the mobile motor 18 rotates, the transmission gear set 26 on the output shaft of the mobile motor 18, which is fixedly connected to a sliding gear set 15, will also rotate, thereby causing the sliding bracket 42 to move along the trajectory of the teeth on the welded guide rail. During this process, the rotation of the second oscillating gear set 25 drives the rotation of the first oscillating gear set 24. (Refer to...) Figure 5 The first oscillating gear set 24 consists of a complete spur gear and a half gear. The half gear is fixedly connected to the welding head 23, and the welding head 23 is rotatably connected to the sliding bracket 42. The rotatable connection is made of rubber. Therefore, when the spur gear in the first oscillating gear set 24 rotates, it causes the half gear to rotate as well, which in turn causes the welding head 23 to oscillate up and down. The rubber material at the rotatable connection provides damping, reducing the oscillation speed of the welding head 23. By oscillating the welding head 23, the welding area is enlarged, thereby increasing the strength of the weld.

[0040] When the protective gas enters the device, it can provide protection for the welded joints of the aluminum alloy frame. At the same time, the air pump 2 is turned on, drawing the protective gas inside the sealing door 1 out of the device into the compressed air tank 3. The compressed air tank 3 is fixedly connected to the filter screen 35 and the second pressure relief valve 34.

[0041] The protective gas first enters below filter 35 through the pipe of air pump 2. Below filter 35 is water. When air pump 2 draws in air, it also draws in the waste gas generated during welding into compressed air tank 3. The mixed gas first contacts the water, and then contacts filter 35, thus removing the waste gas. The second pressure relief valve 34 connects to the inside of the device. If the pressure of the compressed gas in compressed air tank 3 becomes too high, the protective gas will be released into the device. This achieves the secondary use of the protective gas. It should be noted that the protective gas cannot be reused multiple times.

[0042] When there are many aluminum alloy supports welded to this device, the outside air and the protective gas will mix together. The protective gas is usually argon, which is heavier than air. Therefore, in the compressed gas tank 3, the argon is located at the bottom. When the pressure reaches a certain level, the argon will be preferentially forced into the device.

[0043] refer to Figure 2 The electromagnetic check valve 4 is located on the top of the compressed gas tank 3. It can be opened manually. When the pressure inside the compressed gas tank 3 is high, the electromagnetic check valve 4 can be opened to allow the air in the compressed gas tank 3 to be discharged. In this way, the air and argon can be separated by utilizing the density difference between air and argon, thereby preventing air from entering the interior of the device and thus preventing external air from damaging the protective effect of argon.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding device for alloy frames used in table and chair processing, comprising a sealing door (1), a sliding bracket (42), a lead screw (10), and a clamping frame (43), characterized in that, The bottom of the sealing door (1) is slidably connected to a base plate (5), the upper surface of the base plate (5) is fixedly connected to a support plate (30), the side wall of the support plate (30) is slidably connected to a welding frame (6), the upper surface of the sealing door (1) is fixedly connected to a compressed air tank (3), the upper surface of the compressed air tank (3) is provided with an electromagnetic one-way valve (4), the inside of the compressed air tank (3) is fixedly connected to a second pressure relief valve (34) and a filter screen (35), and the front end of the sealing door (1) is fixedly connected to an air pump (2). A moving motor (18) is also fixedly connected to the sliding bracket (42), and a transmission gear set (26) is fixedly connected to the output shaft of the moving motor (18). A second swing gear set (25) is rotatably connected to the sliding bracket (42). The lead screw (10) is threaded with a welding guide rail (14), and a sliding bracket (42) is slidably connected to the welding guide rail (14). A sliding gear set (15) is rotatably connected to the upper surface of the sliding bracket (42).

2. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, A first swing gear set (24) is fixedly connected to the second swing gear set (25), and a welding head (23) is rotatably connected to the sliding bracket (42).

3. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, A feed motor (19) is also fixedly connected to the sliding bracket (42). A feed transmission group (20) and a feeding roller (21) are fixedly connected to the output shaft of the feed motor (19). A welding wire roll (22) is rotatably connected to the inner side of the sliding bracket (42).

4. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, The inner wall of the welding frame (6) is fixedly connected to a lifting cylinder (16), the welding frame (6) is rotatably connected to the lead screw (10), a clamping frame (43) is fixedly connected to the output shaft of the lifting cylinder (16), and a clamping cylinder (17) is fixedly connected to the clamping frame (43).

5. The alloy frame welding device for table and chair processing according to claim 4, characterized in that, A clamping block (11) is fixedly connected to the output shaft of the clamping cylinder (17). There are two clamping blocks (11), and a clamping rack (13) is fixedly connected to the clamping block (11).

6. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, A clamping gear (12) is rotatably connected to the clamping frame (43), and the clamping gear (12) meshes with the clamping rack (13).

7. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, A grinding plate (31) is fixedly connected to the support plate (30). A grinding motor (37) is fixedly connected to the grinding plate (31). A bevel gear in a grinding gear set (38) is provided on the output shaft of the grinding motor (37). The grinding gear set (38) consists of three meshing bevel gears. A grinding belt drive set (36) is rotatably connected to the grinding plate (31). A grinding belt (27) is provided on the grinding belt drive set (36). A spline shaft (39) is fixedly rotatably connected to the grinding plate (31). A connecting sleeve (40) is fixedly connected to the grinding belt drive set (36).

8. The alloy frame welding device for table and chair processing according to claim 7, characterized in that, The spline shaft (39) is slidably connected to the grinding belt drive assembly (36), the grinding belt drive assembly (36) is slidably connected to the grinding plate (31), the two spline shafts (39) are fixedly connected to the other two bevel gears in the grinding gear assembly (38) at one end near the grinding motor (37), the grinding plate (31) is fixedly connected to the lower surface of the grinding cylinder (41), and the grinding rack (32) is fixedly connected to the output shaft of the grinding cylinder (41).

9. The alloy frame welding device for table and chair processing according to claim 8, characterized in that, The grinding rack (32) is fixedly connected to the grinding belt drive assembly (36), and a lifting motor (8) is fixedly connected to the upper surface of the welding frame (6).

10. The alloy frame welding device for table and chair processing according to claim 1, characterized in that, The upper end of the lead screw (10) is fixedly connected to a lifting gear group (9), and the welding frame (6) is also fixedly connected to a guide rod (7).

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