A double-sided welding device suitable for medium and thin-wall structures

Abstract

The present invention belongs to the field of welding technology, and discloses a double-sided welding device suitable for medium-thin-wall structures, including a welding table, a first mounting plate is arranged on one side of the top of the welding table, and a hydraulic rod is fixedly connected to the upper end of one side of the first mounting plate. The present invention starts a driving motor to drive a sliding column to slide inside a pentagonal chute. After the sliding column rotates, multiple clamping plates will move along the oblique side to achieve the contraction of multiple clamping plates and complete the clamping of the workpiece. At this time, if the clamping force is too large, and because the clamped part is a medium-thin-walled feature, its hardness is not enough, it is easy to cause deformation and indentation, effectively preventing material damage and improving the processing effect. After the clamping is completed, because its inner wall is completely fitted with the arc top plate, it can effectively ensure the alignment of the bent edge of the workpiece, improve the processing accuracy, and avoid subsequent correction and adjustment of the workpiece, thereby improving the processing speed.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a double-sided welding device suitable for medium-thin-wall structures. Background Art

[0002] There are many thin-walled equipment in industrial equipment, and the thickness is generally around 6mm. Conventional welding methods such as manual arc welding, argon arc welding or gas shielded welding all require processing grooves and welding multiple layers. Not only is the welding efficiency low, but the welding position is variable and the welding quality is unstable. For welding after rolling flat steel into steel pipes, since the wall thickness is relatively thin and the weld is a longitudinal weld, it is suitable for automated welding.

[0003] However, the existing double-sided welding devices suitable for medium and thin-walled structures often have some problems in actual use: first, the flat steel is bent and then welded, which will generate elastic stress during welding, and since it is difficult to ensure the alignment of the bent edges after bending, it is easy to cause poor forming quality during welding, which increases the risk of leakage and breakage. At the same time, when welding medium and thin-walled metal parts in winter, due to the low temperature in winter, the material properties will change, resulting in cold brittleness, and due to the thin-wall characteristics, it is easier to burn through and produce cracks during welding, and during the processing, it is more likely to produce pores and impurities. Summary of the invention

[0004] The object of the present invention is to provide a double-sided welding device suitable for medium-thin-wall structures to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a double-sided welding device suitable for medium and thin-walled structures, comprising a welding table, a first mounting plate is arranged on one side of the top of the welding table, a hydraulic rod is fixedly connected to the upper end of one side of the first mounting plate, a welding head is fixedly connected to one end of the hydraulic rod, sliding plates are slidably connected to both sides of the welding table, a support plate is fixedly connected to one side of the welding table, a driving motor is fixedly connected to the top of the support plate, a rotating shaft is fixedly connected to the output end of the driving motor, a first gear is fixedly connected to the outer side of the rotating shaft, two clamping blocks are respectively fixedly connected to both sides of the top of the welding table, a gear block is rotatably connected to the inside of the clamping block, and the first gear and the gear The blocks are meshingly connected, a pentagonal slide groove is opened inside one side of the gear block, and a plurality of sliding columns are slidably connected inside the pentagonal slide groove, and a plurality of clamping plates are fixedly connected to the outer sides of the plurality of sliding columns, and the plurality of clamping plates are fitted with each other, a limiting plate is set on one side of the gear block, and the limiting plate is fixedly connected to the clamping block, and a plurality of limiting slots are opened inside the limiting plate, one side of the clamping block is threadedly connected to a limiting top plate, a fixing column is fixedly connected to the middle part of one end of the limiting top plate, a plurality of springs are fixedly connected to the outer side of the fixing column, and a plurality of springs are fixedly connected to the outer sides of the arc top plates, a transmission assembly is set inside the welding table, and a preheating assembly is set on one side of the top of the welding table.

[0006] Preferably, the transmission assembly includes a second mounting plate, the second mounting plate is fixedly connected to one side of the top of the welding table, a telescopic rod is rotatably connected inside the second mounting plate, the outer sides of the rotating shaft and the telescopic rod are fixedly connected to pulleys, a belt is sleeved on the outer side of the pulley, and the telescopic rod and the rotating shaft are connected to each other through the belt.

[0007] Preferably, the preheating assembly includes an air outlet plate, which is fixedly connected to one end of the telescopic rod, and a plurality of flame heads are fixedly connected to the outside of the air outlet plate, an electric push rod is fixedly connected to one side of the second mounting plate, the telescopic rod is movably sleeved on the outside of the telescopic rod, and one end of the electric push rod is fixedly connected to the fixed plate.

[0008] Preferably, the plurality of limit slots are respectively arranged corresponding to the plurality of sliding columns, the plurality of sliding columns are slidably connected inside the limit slots, one side of the clamping plate is in contact with the gear block, and the other side of the clamping plate is in contact with the limit plate.

[0009] Preferably, the limiting top plate is a T-shaped structure, the plurality of springs all penetrate the limiting top plate, and the curvature of the plurality of circular arc top plates is the same as that of the limiting top plate.

[0010] Preferably, the telescopic rod and the clamping block are on the same axis, and a distance is left between the flame head and the inner wall of the workpiece.

[0011] Preferably, after the limiting top plate is screwed into the clamping block, the distance between the side edge and the inner side edge is the same as the wall thickness of the welded part, and the arc top plate fits the inner wall of the processed part.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention starts a driving motor to drive the sliding column to slide inside the slide groove of the pentagonal slide groove. After the sliding column rotates, multiple clamping plates will move along the oblique side to realize the contraction of multiple clamping plates and complete the clamping of the workpiece. Since the clamped workpiece has the physical characteristics of medium and thin walls, its hardness is relatively low, which is easy to cause deformation and indentation during clamping. The contraction of the workpiece by multiple clamping plates effectively prevents material damage and improves the processing effect. After the clamping is completed, since the inner wall is completely fitted with the arc top plate, the alignment of the bent edge of the workpiece can be effectively guaranteed, thereby improving the processing accuracy, avoiding subsequent correction and adjustment of the workpiece, and improving the processing speed.

[0013] 2. The present invention drives the flame head to move by an electric push rod. When the flame head moves to the inside of the workpiece, the gas outlet disk sprays out combustible gas, which is ignited by the flame head, thereby preheating the workpiece. At this time, the driving motor starts to drive the pulley to rotate, the rotation of the pulley drives the telescopic rod to rotate, the rotation of the telescopic rod drives the gas outlet disk rotating rod, the rotation of the gas outlet disk drives the flame head to rotate, and the rotation of the flame head can rotate the ejected flame, so that the workpiece is heated more evenly, avoiding long-term heating of one position, which makes the temperature of the position too high and causes burn-through and cracks, affecting subsequent processing, and can cooperate with the electric push rod during heating to achieve reciprocating movement and rotation, so that the heating is more uniform, and the temperature is too low and the material becomes cold and brittle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall side structure of the present invention; Figure 3 is a cross-sectional view of the welding station of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at center; Figure 5 It is a structural schematic diagram of the gear block of the present invention; Figure 6 It is a structural schematic diagram of the limiting plate of the present invention; Figure 7 It is a structural schematic diagram of a pentagonal chute of the present invention; Figure 8 It is a schematic structural diagram of the clamping plate of the present invention.

[0015] In the figure: 1. welding table; 2. first mounting plate; 3. hydraulic rod; 4. welding head; 5. sliding plate; 6. supporting plate; 7. driving motor; 8. rotating shaft; 9. first gear; 10. clamping block; 11. gear block; 12. pentagonal slide; 13. sliding column; 14. clamping plate; 15. limit plate; 16. limit slot; 17. limit top plate; 172. fixed column; 173. spring; 174. arc top plate; 18. second mounting plate; 19. pulley; 20. belt; 21. telescopic rod; 22. air outlet plate; 23. flame head; 24. electric push rod; 25. fixed plate. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figures 1 to 8As shown, the embodiment of the present invention provides a double-sided welding device suitable for medium and thin-walled structures, including a welding platform 1, a first mounting plate 2 is arranged on one side of the top of the welding platform 1, a hydraulic rod 3 is fixedly connected to the upper end of one side of the first mounting plate 2, a welding head 4 is fixedly connected to one end of the hydraulic rod 3, sliding plates 5 are slidably connected to both sides of the welding platform 1, a support plate 6 is fixedly connected to one side of the welding platform 1, a driving motor 7 is fixedly connected to the top of the supporting plate 6, a rotating shaft 8 is fixedly connected to the output end of the driving motor 7, a first gear 9 is fixedly connected to the outer side of the rotating shaft 8, and the welding platform Two clamping blocks 10 are fixedly connected to the top sides respectively, and a gear block 11 is rotatably connected inside the clamping block 10. The first gear 9 is meshed and connected with the gear block 11. A pentagonal slide groove 12 is provided inside one side of the gear block 11. A plurality of sliding columns 13 are slidably connected inside the pentagonal slide groove 12. A plurality of clamping plates 14 are fixedly connected to the outside of the plurality of sliding columns 13 respectively. The plurality of clamping plates 14 fit each other. A limit plate 15 is provided on one side of the gear block 11. The limit plate 15 is fixedly connected to the clamping block 10. A plurality of limit clips are provided inside the limit plate 15. The slot 16 includes one side of a clamping block 10 connected by a threaded connection to a limited top plate 17, a fixed column 172 is fixedly connected to the middle of one end of the limited top plate 17, a plurality of springs 173 are fixedly connected to the outside of the fixed column 172, and a plurality of springs 173 are fixedly connected to the outside of the plurality of springs 173. A circular arc top plate 174 is fixedly connected. A transmission component is arranged inside the welding table 1, and a preheating component is arranged on one side of the top of the welding table 1. By starting the driving motor 7, the sliding column 13 is driven to slide inside the slide groove of the pentagonal slide groove 12. After the sliding column 13 rotates, the plurality of clamping plates 14 will slide along the bevel. By moving, the multiple clamping plates 14 are contracted, and the workpiece is clamped. Since the clamped workpiece has the physical characteristics of medium and thin walls, its hardness is relatively low, and it is easy to cause deformation and indentation during clamping. The workpiece is clamped by the contraction of multiple clamping plates, which effectively prevents material damage and improves the processing effect. After the clamping is completed, since its inner wall is completely in contact with the arc top plate 174, the alignment of the bent edges of the workpiece can be effectively guaranteed, thereby improving the processing accuracy, avoiding subsequent corrections and adjustments to the workpiece, and improving the processing speed.

[0018] Among them, the transmission assembly includes a second mounting plate 18, which is fixedly connected to one side of the top of the welding table 1, and a telescopic rod 21 is rotatably connected inside the second mounting plate 18. The outer sides of the rotating shaft 8 and the telescopic rod 21 are fixedly connected with pulleys 19, and a belt 20 is sleeved on the outer side of the pulley 19. The telescopic rod 21 and the rotating shaft 8 are connected to each other through the belt 20. The preheating assembly includes an air outlet plate 22, which is fixedly connected to one end of the telescopic rod 21, and a plurality of flame heads 23 are fixedly connected to the outer side of the air outlet plate 22. An electric push rod 24 is fixedly connected to one side of the second mounting plate 18, and the telescopic rod 21 is movably sleeved on the outer side of the telescopic rod 21. One end of the electric push rod 24 is fixedly connected to the fixed plate 25. A plurality of limit slots 16 are respectively arranged corresponding to a plurality of sliding columns 13, and a plurality of sliding columns 13 are slidably connected to the inside of the limit slots 16. One side of the clamping plate 14 is connected to the gear block 11. The other side of the clamping plate 14 is in contact with the limit plate 15, and the flame head 23 is pushed to move by the electric push rod 24. When the flame head 23 moves to the inside of the workpiece, the gas outlet disk 22 sprays out combustible gas, and the combustible gas is ignited by the flame head 23, thereby preheating the workpiece. At this time, the driving motor 7 starts to drive the pulley 19 to rotate, and the rotation of the pulley 19 drives the telescopic rod 21 to rotate. The rotation of the telescopic rod 21 drives the gas outlet disk 22 to rotate the rod, and the rotation of the gas outlet disk 22 drives the flame head 23 to rotate. The rotation of the flame head 23 can make the ejected flame rotate, so that the workpiece is heated more evenly, avoiding long-term heating of one position, causing the temperature of the position to be too high to cause burn-through and cracks, affecting subsequent processing, and can cooperate with the electric push rod 24 during heating to achieve reciprocating movement and rotation, so that the heating is more uniform, avoiding the temperature being too low and the material becoming cold and brittle.

[0019] Among them, the limiting top plate 17 is a T-shaped structure, multiple springs 173 all penetrate the limiting top plate 17, and the bending curvature of multiple arc top plates 174 is the same as the curvature of the limiting top plate 17. By setting the bending curvature of multiple arc top plates 174 to be the same as the curvature of the limiting top plate 17, the arc top plate 174 can perfectly fit the inner side of the workpiece, thereby avoiding damage to the workpiece due to excessive clamping force during processing.

[0020] Among them, the telescopic rod 21 and the clamping block 10 are on the same axis, the flame head 23 is at a distance from the inner wall of the workpiece, and after the limiting top plate 17 is screwed into the clamping block 10, the distance between the side and the inner side is the same as the wall thickness of the weld, and the arc top plate 174 is in contact with the inner wall of the workpiece. By leaving a distance between the flame head 23 and the inner wall of the workpiece, the weldment can be heated by the outer flame temperature of the flame when it is preheated, so that it can be heated faster during preheating, thereby improving work efficiency. After the limiting top plate 17 is screwed into the clamping block 10, the distance between the side of the clamping block 10 and the T-shaped inner side of the limiting top plate 17 is the same as the wall thickness of the weld, so that the workpiece can be perfectly fitted with the clamping block 10 and the limiting top plate 17, so that the workpiece can avoid the occurrence of misaligned bending edges, thereby affecting the welding quality.

[0021] Working principle: When welding thin-walled metal parts in winter when the temperature is too low, the workpiece is placed inside the two clamping blocks 10. At this time, the electric push rod 24 pushes the fixed plate 25 to move the telescopic rod 21, and the movement of the telescopic rod 21 drives the gas outlet disk 22 to move, and the movement of the gas outlet disk 22 drives the flame head 23 to move. When the gas outlet disk 22 and the flame head 23 move to the inside of the workpiece, the gas outlet disk 22 sprays combustible gas, and the combustible gas is ignited by the flame head 23, thereby preheating the workpiece. At this time, the drive motor 7 starts to drive the pulley 19 to rotate. The rotation of the pulley 19 drives the telescopic rod 21 to rotate, the rotation of the telescopic rod 21 drives the rotating rod of the gas outlet plate 22, the rotation of the gas outlet plate 22 drives the flame head 23 to rotate, and the rotation of the flame head 23 can make the ejected flame rotate, so that the workpiece is heated more evenly, avoiding long-term heating of one position, which makes the temperature of the position too high to cause burn-through and cracks, affecting subsequent processing, and can cooperate with the electric push rod 24 during heating to achieve reciprocating movement and rotation, so that the heating is more even, and the temperature is too low, which prevents the material from becoming cold and brittle. After preheating is completed, the air outlet disk 22 is withdrawn and screwed into the limiting top plate 17. At this time, the inner wall of the workpiece is fitted with the outer side of the arc top plate 174, and the drive motor 7 is started. The drive motor 7 starts to drive the shaft 8 to rotate, and the rotation of the shaft 8 drives the first gear 9 to rotate. The rotation of the first gear 9 drives the gear block 11 to rotate. The rotation of the gear block 11 drives the sliding column 13 to slide inside the slide groove of the pentagonal slide groove 12. When the sliding column 13 slides, its other side slides inside the limiting card groove 16, and it is limited by the limiting card groove 16. At this time, since the side edges of the clamping plate 14 are fitted with each other After the rotation, the multiple clamping plates 14 will move along the bevel to realize the contraction of the multiple clamping plates 14 and complete the clamping of the workpiece. Since the clamped workpiece has the physical characteristics of medium and thin walls, its hardness is relatively low, and it is easy to cause deformation and indentation during clamping. The workpiece is clamped by the contraction of multiple clamping plates, which effectively prevents material damage and improves the processing effect. After the clamping is completed, since its inner wall is completely in contact with the arc top plate 174, it can effectively ensure the alignment of the bent edge of the workpiece, improve the processing accuracy, and avoid subsequent correction and adjustment of the workpiece, thereby improving the processing speed.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-sided welding device suitable for medium-thin-wall structures, comprising a welding table (1), a first mounting plate (2) being arranged on one side of the top of the welding table (1), a hydraulic rod (3) being fixedly connected to an upper end of one side of the first mounting plate (2), a welding head (4) being fixedly connected to one end of the hydraulic rod (3), and sliding plates (5) being slidably connected to both sides of the welding table (1), characterized in that: A support plate (6) is fixedly connected to one side of the welding platform (1), a driving motor (7) is fixedly connected to the top of the supporting plate (6), a rotating shaft (8) is fixedly connected to the output end of the driving motor (7), a first gear (9) is fixedly connected to the outer side of the rotating shaft (8), two clamping blocks (10) are fixedly connected to the two sides of the top of the welding platform (1), a gear block (11) is rotatably connected inside the clamping block (10), the first gear (9) is meshingly connected to the gear block (11), a pentagonal slide groove (12) is provided inside one side of the gear block (11), a plurality of sliding columns (13) are slidably connected inside the pentagonal slide groove (12), and a plurality of sliding columns (13) are fixedly connected to the outer sides of the plurality of sliding columns (13). A clamping plate (14), wherein a plurality of the clamping plates (14) are fitted together, a limiting plate (15) is arranged on one side of the gear block (11), the limiting plate (15) is fixedly connected to the clamping block (10), a plurality of limiting slots (16) are arranged inside the limiting plate (15), one side of one of the clamping blocks (10) is threadedly connected to a limiting top plate (17), a fixing column (172) is fixedly connected to the middle of one end of the limiting top plate (17), a plurality of springs (173) are fixedly connected to the outside of the fixing column (172), and a plurality of springs (173) are fixedly connected to the outside of each of the plurality of springs (173) with an arc top plate (174), a transmission component is arranged inside the welding table (1), and a preheating component is arranged on one side of the top of the welding table (1).

2. A double-sided welding device suitable for medium-thin-wall structures according to claim 1, characterized in that: The transmission assembly comprises a second mounting plate (18), the second mounting plate (18) being fixedly connected to one side of the top of the welding table (1), a telescopic rod (21) being rotatably connected inside the second mounting plate (18), a pulley (19) being fixedly connected to the outside of the rotating shaft (8) and the telescopic rod (21), a belt (20) being sleeved on the outside of the belt pulley (19), and the telescopic rod (21) and the rotating shaft (8) being connected to each other via the belt (20).

3. A double-sided welding device suitable for medium-thin-wall structures according to claim 2, characterized in that: The preheating assembly comprises an air outlet plate (22), the air outlet plate (22) being fixedly connected to one end of a telescopic rod (21), a plurality of flame heads (23) being fixedly connected to the outside of the air outlet plate (22), an electric push rod (24) being fixedly connected to one side of the second mounting plate (18), the telescopic rod (21) being movably sleeved on the outside of the telescopic rod (21), and one end of the electric push rod (24) being fixedly connected to a fixing plate (25).

4. A double-sided welding device suitable for medium-thin-wall structures according to claim 3, characterized in that: The plurality of limit slots (16) are respectively arranged corresponding to the plurality of sliding columns (13); the plurality of sliding columns (13) are slidably connected inside the limit slots (16); one side of the clamping plate (14) is in contact with the gear block (11); and the other side of the clamping plate (14) is in contact with the limit plate (15).

5. A double-sided welding device suitable for medium-thin-wall structures according to claim 4, characterized in that: The position-limiting top plate (17) is a T-shaped structure, the plurality of springs (173) all penetrate the position-limiting top plate (17), and the curvature of the plurality of circular arc top plates (174) is the same as that of the position-limiting top plate (17).

6. A double-sided welding device suitable for medium-thin-wall structures according to claim 5, characterized in that: The telescopic rod (21) and the clamping block (10) are located on the same axis, and a distance is left between the flame head (23) and the inner wall of the workpiece.

7. A double-sided welding device suitable for medium-thin-wall structures according to claim 6, characterized in that: After the limiting top plate (17) is screwed into the clamping block (10), the distance between the side edge and the inner side edge is the same as the wall thickness of the welded part, and the arc top plate (174) fits the inner wall of the workpiece.

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