Double-layer alternate welding equipment
By using double-layer alternating welding equipment and high-pressure carbon dioxide gas protection, the problem of oxidation of the container frame welds was solved, thereby improving weld quality and enhancing the container's load-bearing capacity.
Patent Information
- Application Number
- CN202411327535.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the molten metal droplets at the weld seams of the container frame are prone to oxidation and are affected by humid air and impurities, resulting in poor weld strength and affecting the load-bearing capacity of the container.
The double-layer alternating welding equipment uses high-pressure carbon dioxide gas to protect the molten metal droplets at the welding point, dissipates moisture and impurities in the air, and achieves seamless welding through a multi-axis welding robotic arm, thereby improving the quality of the weld.
This improves the corrosion resistance of the weld, reduces the possibility of porosity, and enhances the strength of the weld, thereby increasing the load-bearing capacity of the container.
Smart Images
Figure CN119098658A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to welding equipment, in particular to double-layer alternating welding equipment. Background Art
[0002] Containers are widely used in land and sea transportation. Due to the large cargo capacity and the bumpy road, there are strict requirements on the load capacity of containers. There is a frame on the inner side of the wall of the container. The frame is welded by longitudinal bars and transverse bars. The welding strength of the welding point directly affects the load capacity of the container.
[0003] In the prior art, during the welding process of the longitudinal bars and the transverse bars, the metal droplets at the welds are easily oxidized and are affected by humid air, impurities, etc., resulting in poor weld quality of the welded container frame, affecting the welding strength, thereby reducing the load capacity of the container. Summary of the invention
[0004] The object of the present invention is to provide a double-layer alternating welding device, which can improve the quality of the weld of a container frame, thereby improving the load capacity of the container.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A double-layer alternating welding device, comprising a welding base and a lifting base. On each of the two vertical plates on both sides of the lifting base, there are two lifting gears. A rotating shaft is rotatably connected to the wall surface of the lifting gear, and a connecting seat is rotatably connected to the rotating shaft. Two connecting seats on the same side are fixedly connected to form a support frame. The cross-section of the support frame is in a U shape, thus forming an upper cross plate and a lower cross plate. Longitudinal tracks are provided on the top walls of both the upper cross plate and the lower cross plate. On each of the upper and lower pairs of longitudinal tracks, there is a transfer vehicle frame. A jig is fixedly connected to the transfer vehicle frame. The jig is used for positioning and placing a container skeleton. The container skeleton is assembled by cross bars and longitudinal bars. On the side wall of the lifting base, there are fixedly connected an upper restraint block and a lower restraint block. On the side wall of the upper transfer vehicle frame, there is fixedly connected an upper guiding chute, and on the side wall of the lower transfer vehicle frame, there is fixedly connected a lower guiding chute. On the top surface of the welding base, there is a welding station track. Inside the side wall of the welding base, there is a dragging chain. The turning point at the rear end of the dragging chain is located between the upper restraint block and the lower restraint block. The dragging chain is provided with a drag block. The four lifting gears can jointly lift the support frame to the upper extreme position, so that the upper guiding chute forms a fit with the upper restraint block, while the lower guiding chute disengages from the lower restraint block and instead forms a fit with the drag block. The four lifting gears can jointly lift the support frame to the lower extreme position, so that the lower guiding chute forms a fit with the lower restraint block, while the upper guiding chute disengages from the upper restraint block and instead forms a fit with the drag block. At the bottom of the inner side wall of the welding base, there are longitudinal air ducts. At the rear side of the bottom of the welding base, there is a transverse air inlet pipe. The transverse air inlet pipe is communicated with the two longitudinal air ducts. The transverse air inlet pipe is provided with an air inlet for inputting carbon dioxide gas. Between the two longitudinal air ducts, there are connected several transverse air outlet pipes. Between adjacent two transverse air outlet pipes, there is formed an inter-pipe gap. The position and interval of the inter-pipe gap correspond to the cross bars of the container skeleton. On the top wall of the transverse air outlet pipe, there is an air outlet valve. The air outlet of the air outlet valve faces the splicing position of the cross bar and the longitudinal bar.
[0007] Specifically, the cross-section of the top wall of the transverse air outlet pipe is in a V shape with the tip facing upwards, thus forming two inclined surfaces. On both transverse sides of the inclined surfaces, there are air outlet valves. The air outlet valves are inclined, so that the two air outlet valves separated by the inter-pipe gap both face the same splicing position.
[0008] Specifically, at the front side of the welding base, there is a positioning cylinder. A positioning plug is fixedly connected to the piston rod of the positioning cylinder. At the front side of the transfer vehicle frame, there is fixedly connected a positioning block. There is a positioning notch on the bottom wall of the positioning block.
[0009] Specifically, at the top sides of both side walls of the welding base, there are cross beam tracks. A moving cross beam is connected to the cross beam tracks. A multi-axis welding robotic arm is connected to the moving cross beam. The multi-axis welding robotic arm is provided with a welding head.
[0010] Specifically, at the rear end of the welding base, there is fixedly connected an intermediate track, which is collinear with the welding station track.
[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0012] The height position of the welding station track matches the air outlet angle of the air outlet valve set on the top wall of the horizontal air outlet pipe. When the transfer frame reaches the corresponding position of the welding station track, the piston of the positioning cylinder extends upward, so that the card block is inserted into the positioning notch of the positioning block set on the front side of the transfer frame, and the positioning of the transfer frame is completed. At this time, each cross bar is opposite to the corresponding gap between the tubes. At this time, the air outlet direction of the two air outlet valves on both sides of the gap between the tubes is aligned with the joint between the end of the cross bar and the inner wall of the longitudinal bar. High-pressure carbon dioxide gas is introduced into the air inlet.
[0013] The welding head welds each joint in turn. When welding to a certain joint, the two outlet valves corresponding to the joint are opened to spray carbon dioxide gas to the joint (welding point). Carbon dioxide is used to protect the molten metal droplets at the welding point to prevent oxidation during the solidification process of the molten metal droplets. In addition, carbon dioxide can also disperse moisture and impurities in the air at the welding point, thereby improving the quality of the weld, improving the corrosion resistance of the weld, and reducing the possibility of subsequent wire porosity in the weld. The two outlet valves are opened at the same time, and the two streams of carbon dioxide gas sprayed out collide with each other at the joint (welding point), so that the airflows disperse each other, and the carbon dioxide gas is evenly distributed in each weld of the joint (welding point), making the protection more sufficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a three-dimensional view of a double-layer alternating welding device;
[0016] Figure 2 It is a partial view of a double-layer alternating welding device;
[0017] Figure 3 It is a partial view of the lifting base;
[0018] Figure 4 It is a partial view of the lifting base;
[0019] Figure 5 It is a partial exploded view of the lifting base;
[0020] Figure 6 It is a combined state view of the transfer frame, the fixture and the container frame;
[0021] Figure 7 This is a disassembled view of the transfer frame, jig and container frame;
[0022] Figure 8 It is a partial view of the lifting base;
[0023] Fig. 9 It is a partial view of the drag chain;
[0024] Fig.10 It is a partial view of the welding base;
[0025] Fig.11 It is a partial view of the welding base;
[0026] Fig.12 This is a view of the horizontal air outlet duct.
[0027] In the figure:
[0028] 1. Lifting base; 11. Lifting gear; 111. Rotating shaft; 112. Connecting seat; 12. Support frame; 121. Upper horizontal plate; 1211. Longitudinal track; 122. Lower horizontal plate; 13. Upper restraining block; 14. Lower restraining block;
[0029] 2. Welding base; 21. Drag chain; 211. Drag block; 22. Welding station track; 23. Longitudinal air duct; 24. Horizontal air inlet pipe; 241. Air inlet; 25. Horizontal air outlet pipe; 251. Air outlet valve; 26. Gap between pipes; 27. Positioning cylinder; 28. Crossbeam track; 29. Middle track;
[0030] 3. Transfer frame; 31. Jig; 311. Longitudinal rod positioning edge; 312. End positioning piece; 313. Clamping position; 32. Container frame; 321. Cross bar; 322. Longitudinal bar; 33. Upper guide chute; 34. Lower guide chute; 35. Positioning block; 351. Positioning notch;
[0031] 41. Moving crossbeam; 42. Multi-axis welding robot arm; 43. Welding head. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0033] See Figures 1 to 12 A double-layer alternating welding device includes a welding base 2 and a lifting base 1. Two lifting gears 11 are provided on the two side plates of the lifting base 1. The wall surface of the lifting gear 11 is rotatably connected to a rotating shaft 111. The rotating shaft 111 is rotatably connected to a connecting seat 112. The two connecting seats 112 on the same side are fixedly connected to a supporting frame 12 (see Figure 4 , Figure 5 ).
[0034] See Figure 5 , the cross-section of the support frame 12 is in a U shape, thus forming an upper cross plate 121 and a lower cross plate 122. Longitudinal tracks 1211 are provided on the top walls of both the upper cross plate 121 and the lower cross plate 122. Two pairs of upper and lower longitudinal tracks 1211 are each provided with a transfer vehicle frame 3 (see Figure 3 ). See Figure 6 , Figure 7 , a fixture 31 is fixedly connected to the transfer vehicle frame 3. The fixture 31 is used to position and place the container skeleton 32. The container skeleton 32 is assembled by cross bars 321 and longitudinal bars 322.
[0035] See Figure 3 , Figure 8 , an upper restraint block 13 and a lower restraint block 14 are fixedly connected to the side wall of the lifting base 1. An upper guide chute 33 is fixedly connected to the side wall of the upper transfer vehicle frame 3, and a lower guide chute 34 is fixedly connected to the side wall of the lower transfer vehicle frame 3. See Figure 2 , a welding station track 22 is provided on the top surface of the welding base 2, and a drag chain 21 is provided on the inner side wall of the welding base 2. The rear turning point of the drag chain 21 is located between the upper restraint block 13 and the lower restraint block 14. The drag chain 21 is provided with a drag block 211 (see Figure 8 ).
[0036] The four lifting gears 11 can jointly lift the support frame 12 to the upper extreme position, so that the upper guide chute 33 cooperates with the upper restraint block 13, while the lower guide chute 34 disengages from the lower restraint block 14 and instead cooperates with the drag block 211 (as shown in Figure 8 ). The four lifting gears 11 can jointly lift the support frame 12 to the lower extreme position, so that the lower guide chute 34 cooperates with the lower restraint block 14, while the upper guide chute 33 disengages from the upper restraint block 13 and instead cooperates with the drag block 211.
[0037] See Fig.11 , longitudinal air ducts 23 are provided at the bottom of the inner side wall of the welding base 2, and a transverse air inlet duct 24 is provided at the rear side of the bottom of the welding base 2. The transverse air inlet duct 24 communicates with the two longitudinal air ducts 23. The transverse air inlet duct 24 is provided with an air inlet 241, and the air inlet 241 is used to input carbon dioxide gas. A number of transverse air outlet ducts 25 are connected between the two longitudinal air ducts 23. An inter-tube gap 26 is formed between two adjacent transverse air outlet ducts 25. The position and interval of the inter-tube gap 26 correspond to the cross bars 321 of the container skeleton 32. The top wall of the transverse air outlet duct 25 is provided with an air outlet valve 251, and the air outlet of the air outlet valve 251 faces the splicing position of the cross bar 321 and the longitudinal bar 322.
[0038] Specifically, see Fig.12The top wall section of the horizontal air outlet pipe 25 is V-shaped with the sharp corner facing upward, thereby forming two inclined surfaces, and air outlet valves 251 are provided on both sides of the inclined surface. The air outlet valves 251 are arranged obliquely so that the two air outlet valves 251 separated by the gap 26 between the pipes are both oriented to the same joint (such as Fig.11 (A in the middle).
[0039] Specifically, see Fig.10 The front side of the welding base 2 is provided with a positioning cylinder 27, and the piston rod of the positioning cylinder 27 is fixedly connected with a positioning plug. The front side of the transfer frame 3 is fixedly connected with a positioning block 35 (see Figure 3 ), a positioning notch 351 is provided on the bottom wall of the positioning block 35.
[0040] Specifically, see Figure 2 , Fig.10 A beam track 28 is provided on the top side of the two side walls of the welding base 2, the beam track 28 is connected to a moving beam 41, the moving beam 41 is connected to a multi-axis welding robot arm 42, and the multi-axis welding robot arm 42 is provided with a welding head 43.
[0041] Specifically, see Figure 2 , Figure 8 The rear end of the welding base 2 is fixedly connected with an intermediate track 29. The intermediate track 29 is colinear with the welding station track 22.
[0042] The working principle of the double-layer alternating welding equipment of the present invention is as follows:
[0043] See Figure 6 , Figure 7 The fixture 31 is provided with two longitudinal rod positioning edges 311, and both ends of each longitudinal rod positioning edge 311 are provided with end positioning pieces 312. The inner side of the longitudinal rod positioning edge 311 is provided with a plurality of clamping positions 313.
[0044] The two longitudinal rods 322 are respectively pressed against the inner walls of the two longitudinal rod positioning edges 311, and the two ends of the longitudinal rod 322 are respectively pressed against the two end positioning pieces 312 to achieve the longitudinal positioning of the longitudinal rod 322. Then, the multiple cross rods 321 are pressed into the corresponding positions 313 one by one (two positions 313 in the horizontal direction are in pairs). The width of the position 313 corresponds to that of the cross rod 321. When the position 313 is pressed into, the two ends of the cross rod 321 are pressed against the inner walls of the two longitudinal rods 322, so that the two longitudinal rod positioning edges 311 are slightly elastically deflected outwards. The reaction force generated by the elastic deflection clamps the two longitudinal rods 322 and the multiple cross rods 321 to keep them as shown in FIG. Figure 6 In the positioning state shown, two longitudinal bars 322 and a plurality of transverse bars 321 are spliced together to form a container frame 32 .
[0045] The transfer frame 3 is provided with wheels on both sides, and the wheels cooperate with the longitudinal rails 1211. Figure 8The side wall of the lifting base 1 is fixed with an upper restraining block 13 and a lower restraining block 14. The four lifting gears 11 can jointly lift the support frame 12 to the upper extreme position (such as Figure 8 As shown, Figure 8 The support frame 12 is not shown) so that the upper guide slot 33 is matched with the upper constraint block 13, and the lower guide slot 34 is separated from the lower constraint block 14 and is matched with the drag block 211. At this time, the longitudinal track 1211 located at the lower side is in line with the middle track 29, and then the drag chain 21 drives the lower guide slot 34 and the transfer frame 3 located at the lower side to slide into the welding station track 22 through the drag block 211, and then the moving crossbeam 41 drives the welding head 43 to weld each joint of the container frame 32 (the joint of the longitudinal rod 322 and the crossbeam 321) one by one.
[0046] Similarly, reference Figure 8 , the four lifting gears 11 can jointly lift the support frame 12 to the lower extreme position (not shown), so that the lower guide slot 34 is matched with the lower constraint block 14, and the upper guide slot 33 is separated from the upper constraint block 13 and is matched with the drag block 211. At this time, the longitudinal track 1211 on the upper side is in line with the middle track 29, and then the drag chain 21 drives the upper guide slot 33 and the transfer frame 3 on the upper side to slide into the welding station track 22 through the drag block 211 for welding.
[0047] When one transfer frame 3 is being welded on the welding station track 22, the other transfer frame 3 on the longitudinal track 1211 can be unloaded and loaded. When the transfer frame 3 is welded, it is immediately dragged out, and then the support frame 12 is lifted and switched, so that the drag block 211 is matched with another guide slot, thereby dragging the other transfer frame 3 into the welding station track 22. In this way, the two transfer frames 3 can be alternately fed and welded to achieve seamless welding and improve efficiency.
[0048] refer to Figure 8 In the process that the four lifting gears 11 rotate synchronously and drive the support frame 12 to make an oblique translation movement (theoretically), at least two of the upper constraint block 13, the drag block 211 and the lower constraint block 14 cooperate with the upper guide slot 33 and the lower guide slot 34. For example, in the process that the support frame 12 moves downward, the upper end of the lower guide slot 34 has not yet separated from the drag block 211, and the lower end of the lower guide slot 34 has already formed a match with the lower constraint block 14. As the support frame 12 continues to move downward, the upper end of the lower guide slot 34 separates from the drag block 211, and then, the lower end of the upper guide slot 33 forms a match with the drag block 211, but the upper end of the upper guide slot 33 does not separate from the upper constraint block 13. As the support frame 12 continues to move downward, the upper end of the upper guide slot 33 separates from the upper constraint block 13, and the switching is completed.
[0049] Since at least two of the upper restraining block 13, the dragging block 211 and the lower restraining block 14 cooperate with the upper guide slot 33 and the lower guide slot 34, the two transfer frames 3 are restrained to move only up and down rather than oblique translation (during the process, the transfer frames 3 and the longitudinal rails 1211 produce relative movement).
[0050] Since the transfer frame 3 needs to be moved to the welding station track 22 for welding, the four lifting gears 11 lift the support frame 12 up and down, so that the upper and lower longitudinal tracks 1211 are alternately collinear with the middle track 29 (welding station track 22). Therefore, the lifting accuracy and self-locking performance of the upper and lower longitudinal tracks 1211 are very important. The lifting gear 11 is driven by a servo motor, and its transmission chain has high accuracy and position retention. It can quickly and accurately lift the longitudinal track 1211 to collinear with the middle track 29 (welding station track 22) and maintain it in this position.
[0051] The height position of the welding station track 22 matches the air outlet angle of the air outlet valve 251 provided on the top wall of the horizontal air outlet pipe 25. When the transfer frame 3 reaches the corresponding position of the welding station track 22, the piston of the positioning cylinder 27 extends upward (see Fig.10 ), so that the card block is inserted into the positioning notch 351 of the positioning block 35 set on the front side of the transfer frame 3, the positioning of the transfer frame 3 can be completed. At this time, each cross bar 321 is opposite to the corresponding inter-tube gap 26 (combined with 7, Fig.11 , the eight inter-tube gaps 26 correspond to the eight crossbars 321), at this time, the two outlet valves 251 ( Fig.11 The gas outlet direction (at point A) is aligned with the joint between the end of the cross bar 321 and the inner wall of the longitudinal bar 322. The gas inlet 241 is fed with high-pressure carbon dioxide gas.
[0052] The welding head 43 welds each joint in turn. When welding to a certain joint, the two outlet valves 251 corresponding to the joint are opened to spray carbon dioxide gas to the joint (welding point). Carbon dioxide is used to protect the metal droplets at the welding point to prevent oxidation during the solidification of the metal droplets. In addition, carbon dioxide can also dissipate moisture and impurities in the air at the welding point, thereby improving the quality of the weld, improving the corrosion resistance of the weld, and reducing the possibility of subsequent wire porosity in the weld. The two outlet valves 251 are opened at the same time, and the two carbon dioxide gas flows are ejected just at the joint (welding point), so that the airflows are dispersed from each other, so that the carbon dioxide gas is evenly distributed in each weld of the joint (welding point), so that the protection is more sufficient.
[0053] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above in the form of preferred embodiments, it is not intended to limit the present invention. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A double-layer alternating welding device, characterized in that: It includes a welding base and a lifting base. On each of the two vertical plates on both sides of the lifting base, there are two lifting gears. The wall surface of the lifting gear is rotatably connected to a rotating shaft, and the rotating shaft is rotatably connected to a connecting seat. Two connecting seats on the same side are jointly fixedly connected to a support frame. The cross-section of the support frame is in a U shape, thus forming an upper cross plate and a lower cross plate. Longitudinal tracks are provided on the top walls of both the upper cross plate and the lower cross plate. Two pairs of upper and lower longitudinal tracks are each provided with a transfer vehicle frame. A jig is fixedly connected to the transfer vehicle frame. The jig is used for positioning and placing a container skeleton. The container skeleton is assembled by cross bars and longitudinal bars. On the side wall of the lifting base, there are fixedly connected an upper restraint block and a lower restraint block. On the side wall of the upper transfer vehicle frame, there is fixedly connected an upper guiding chute, and on the side wall of the lower transfer vehicle frame, there is fixedly connected a lower guiding chute. On the top surface of the welding base, there is a welding station track. Inside the inner side wall of the welding base, there is a dragging chain. The turning point at the rear end of the dragging chain is located between the upper restraint block and the lower restraint block. The dragging chain is provided with a dragging block. The four lifting gears can jointly lift the support frame to the upper extreme position, so that the upper guiding chute forms a fit with the upper restraint block, and the lower guiding chute disengages from the lower restraint block and instead forms a fit with the dragging block. The four lifting gears can jointly lift the support frame to the lower extreme position, so that the lower guiding chute forms a fit with the lower restraint block, and the upper guiding chute disengages from the upper restraint block and instead forms a fit with the dragging block. At the bottom of the inner side wall of the welding base, there are longitudinal air ducts. At the rear side of the bottom of the welding base, there is a transverse air inlet duct. The transverse air inlet duct is connected to the two longitudinal air ducts. The transverse air inlet duct is provided with an air inlet for inputting carbon dioxide gas. Between the two longitudinal air ducts, there are connected several transverse air outlet ducts. An inter-duct gap is formed between two adjacent transverse air outlet ducts. The position and interval of the inter-duct gap correspond to the cross bars of the container skeleton. On the top wall of the transverse air outlet duct, there is an air outlet valve, and the air outlet of the air outlet valve faces the splicing position of the cross bar and the longitudinal bar.
2. The double-layer alternating welding equipment according to claim 1 is characterized in that: The cross-section of the top wall of the transverse air outlet duct is in a V shape with the tip facing upwards, thus forming two inclined surfaces. On both transverse sides of the inclined surface, there are air outlet valves. The air outlet valves are inclined, so that the two air outlet valves separated by the inter-duct gap both face the same splicing position.
3. The double-layer alternating welding equipment according to claim 1 is characterized in that: At the front side of the welding base, there is a positioning cylinder. The piston rod of the positioning cylinder is fixedly connected to a positioning plug. At the front side of the transfer vehicle frame, there is fixedly connected a positioning block. There is a positioning notch on the bottom wall of the positioning block.
4. The double-layer alternating welding equipment according to claim 1 is characterized in that: On the top sides of both side walls of the welding base, there are cross beam tracks. The cross beam tracks are connected to a moving cross beam. The moving cross beam is connected to a multi-axis welding robotic arm. The multi-axis welding robotic arm is provided with a welding head.
5. The double-layer alternating welding equipment according to claim 1 is characterized in that: At the rear end of the welding base, there is fixedly connected an intermediate track. The intermediate track is collinear with the welding station track.