Automatic welding tool for refrigerator body structure

Abstract

The invention relates to the technical field of electric arc welding, and discloses a refrigeration box structure automatic welding tool which comprises side supports, an adjusting seat is rotationally arranged between the two sets of side supports, rotating shafts are symmetrically welded to the two ends of the adjusting seat, and each set of rotating shafts are connected with the interiors of the side supports through first bearing seats; wherein one group of rotating shafts is sleeved with a precision gear, the lower end of the precision gear is meshed with a displacement toothed bar, one end of the displacement toothed bar is welded with a horizontal air cylinder rod, the horizontal air cylinder rod extends outwards from the interior of an adjusting air cylinder, and the adjusting air cylinder is horizontally fixed in a side support. An adjusting cylinder is started, a horizontal cylinder rod extends out to drive a displacement toothed bar to move, a precision gear meshed with the displacement toothed bar rotates, a group of rotating shafts are driven to rotate, and an adjusting seat is driven to turn over by a certain angle, so that the welding angle of a welding seam is automatically adjusted, welding seams on two sides can be welded in the single direction of the welding tongs, and the flexibility is higher; the welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of arc welding, and in particular to an automatic welding tool for a refrigerated box structure. Background Art

[0002] Refrigerated trucks are closed van trucks specially used for transporting frozen or fresh goods. They are equipped with refrigeration units and polyurethane insulated compartments. They are mainly used to transport temperature-sensitive goods such as frozen foods, dairy products, vegetables and fruits, vaccines and medicines. The refrigerated truck body is made of a combination of polyurethane insulation inner panels and stainless steel outer panels. The skeleton of the stainless steel outer panel needs to be welded, and arc welding equipment is generally used. Arc welding is a process that melts the metal to achieve connection through arc discharge (temperature above 6000°C) generated between the electrode and the workpiece.

[0003] Existing welding operations are all manual welding, and there are the following technical defects in the welding process. First, welding requires more than two skilled operators to work together, which is time-consuming and labor-intensive. The operators are disturbed by a large amount of smoke when holding the welding clamp, and the welding angle and accuracy are difficult to control accurately, which is prone to welding leaks and weld burns, resulting in poor welding quality; second, the steel plate is large in size, which is inconvenient to position and move during the welding process, resulting in the position of the weld cannot be flexibly adjusted, increasing the difficulty of welding; third, after arc welding, a welding slag protective layer will be formed at the weld, which needs to be manually scraped off, which is time-consuming and labor-intensive. In addition, due to the uneven weld surface, the scraping effect is not good, and there is a small amount of residue, which reduces the aesthetics of the cold storage box.

[0004] In summary, considering that the existing facilities cannot meet the work requirements, we propose an automated welding tool for the refrigerated box structure. Summary of the Invention

[0005] The main purpose of the present invention is to provide an automated welding tool for a refrigerated box structure, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A refrigerated box structure automated welding tool includes side supports, an adjustment seat rotatably arranged between two groups of the side supports, rotating shafts symmetrically welded at both ends of the adjusting seat, each group of the rotating shafts utilizes a first bearing seat and an internal connection of the side supports, one group of the rotating shafts is sleeved with a precision gear, the lower end of the precision gear is meshed with a displacement gear rod, one end of the displacement gear rod is welded with a horizontal cylinder rod, the horizontal cylinder rod extends outward from the inside of the adjusting cylinder, and the adjusting cylinder is horizontally fixed inside the side support.

[0008] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, a welding mother part is placed on the upper end surface of the adjusting seat, a welding sub-part is provided on the upper end of the welding mother part, two groups of strip grooves are opened upward and horizontally symmetrically inside the adjusting seat, a bidirectional screw rod is rotatably provided inside the adjusting seat through the two groups of strip grooves, both ends of the bidirectional screw rod are fixed by means of a second bearing seat and the inner wall of the adjusting seat, and one end of the bidirectional screw rod extends outward and is connected to a screw motor through a coupling.

[0009] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, the bidirectional screw is symmetrically provided with a forward spiral portion and a reverse spiral portion, and both the forward spiral portion and the reverse spiral portion are movably provided with synchronous positioners, and the number of the synchronous positioners is 2 groups.

[0010] As an optimal solution of the automated welding tooling for the refrigerated box structure described in the present invention, the synchronous positioner includes a moving seat, a screw nut sleeve, an L-shaped top seat, a positioning surface, a mounting sleeve, a clamping cylinder, a lifting cylinder rod, a pressure plate and a pressure head. The moving seat is located inside the adjusting seat, and the middle part of the moving seat is installed with a screw nut sleeve that acts on the forward spiral portion and the reverse spiral portion. The top of the moving seat is welded with an L-shaped top seat, and the L-shaped top seat passes through the strip groove and moves linearly along the strip groove. The inner side of the L-shaped top seat is provided with a positioning surface that acts on the end face of the welding mother part, and the mounting sleeve is provided on the L-shaped top seat, and the clamping cylinder is vertically installed in the mounting sleeve, and the lifting cylinder rod is movably provided downwardly extending inside the clamping cylinder, and the lower end of the lifting cylinder rod is connected to the pressure plate, and the lower end of the pressure plate is evenly welded with several groups of pressure heads that act on the welding sub-parts, and the number of the pressure heads is preferably 3-5 groups.

[0011] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, wherein: the front end faces of the two groups of side supports are provided with push-pull limit grooves, push-pull rods are movably provided in the two groups of push-pull limit grooves, slide rails are installed on the sides of the push-pull rods, and a tooling carrier is riveted between the two groups of push-pull rods, a horizontal movable groove is provided horizontally upward inside the tooling carrier, a gravity car is installed in the horizontal movable groove, and first guide ribs that act on the walls of the horizontal movable groove are symmetrically welded on both sides of the gravity car, and the number of the first guide ribs is 2 groups, an articulated frame is installed on the upper end of the gravity car, an arc welding clamp is movably installed in the articulated frame, and a clamp head for clamping the welding rod is provided at the end of the arc welding clamp, and the welding rod acts on the connection between the welding mother part and the welding sub-part.

[0012] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, a driving groove is provided at the bottom of the gravity vehicle, a traveling gear is rotatably provided in the driving groove, an adjusting shaft is welded to the middle part of the traveling gear extending horizontally outward, a connecting bearing seat is provided on the outer side of the adjusting shaft, a handwheel is installed at the end of the adjusting shaft passing through the connecting bearing seat, and a sliding groove for the movement of the connecting bearing seat is provided on the outer side of the tooling body.

[0013] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, the traveling gear partially extends out of the driving groove and is engaged with a fixed gear rod, and the two ends of the fixed gear rod are connected to the inside of the tooling carrier through ear pieces.

[0014] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, a positioning block is riveted on the groove wall of the driving groove, one end of the positioning block is connected to a bent spring steel, one end of the bent spring steel is connected to a clamping piece, and the clamping piece extends into the outer tooth gap of the traveling gear.

[0015] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, wherein: a rodless cylinder seat is horizontally installed on the top of the two groups of side supports, an inner sliding block is provided inside the rodless cylinder seat, an outer extension seat is installed at the lower end of the inner sliding block, a lifting cylinder is vertically installed downward inside the outer extension seat, a lifting rod is movably provided inside the lifting cylinder, and a scraper seat is welded to the lower end of the lifting rod.

[0016] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, two groups of guide grooves are symmetrically opened downward inside the scraper seat, and a guide seat is movably arranged in each group of the guide grooves. There are two groups of guide seats in total, and second guide ribs acting on the guide groove walls are symmetrically welded on both side surfaces of the guide seat. There are two groups of second guide ribs, and a hydraulic rod is installed through the upper end of the guide seat. The hydraulic rod extends horizontally outward from the inside of the hydraulic cylinder, and the hydraulic cylinder is installed on the outer side of the scraper seat.

[0017] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, a corrugated oil storage bag is provided between the two groups of guide seats, and mineral oil is stored in the corrugated oil storage bag. Both ends of the corrugated oil storage bag are riveted together by using positioning plates and the outer side surfaces of the guide seats, and both ends of the corrugated oil storage bag are connected to oil pipes, which are respectively located in the guide seats, and the lower ends of the oil pipes are connected to a flexible scraper, and the upper end of the flexible scraper is fixed with a connecting sleeve for the oil pipe to pass through, and the lower end of the guide seat is fixed with an arc-shaped shell that wraps the flexible scraper.

[0018] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, the flexible scraper acts on the connection between the mother part and the welding sub-part, and the flexible scraper includes a hydraulic scraper oil bag and a hydraulic heat-absorbing oil bag. The hydraulic scraper oil bag and the hydraulic heat-absorbing oil bag are in a wrinkled state in the natural state. Several groups of scraping heads acting on the welding slag layer are evenly distributed on the bottom of the hydraulic scraper oil bag, and the number of the scraping heads is preferably 10-20 groups.

[0019] As a preferred solution of the automated welding tooling for the refrigerated box structure described in the present invention, the arc welding clamp is electrically connected to the external welding power supply through a No. 1 cable, the edge of the welding mother part is connected using an electrode clamp, and the electrode clamp is electrically connected to the external welding power supply through a No. 2 cable.

[0020] The present invention provides an improved automated welding tool for refrigerated container structures, which has the following significant improvements and advantages compared to the prior art:

[0021] (1) Design a synchronous positioner. On the one hand, start the screw motor to drive the bidirectional screw to rotate. Two sets of synchronous positioners use the L-shaped top seat to clamp and position the welding mother part on the left and right to achieve the effect of automatic positioning. On the other hand, the lifting cylinder rod drives several sets of pressure heads to press on the inner wall of the welding sub-part with a greater extrusion force, clamping and fixing the two ends of the welding sub-part, thereby realizing the automatic fixation of the welding mother part and the welding sub-part.

[0022] (2) The width of the pressure plate is designed to be the same as the width of the inner groove of the welding sub-component. Before fixing the welding sub-component, two sets of pressure plates are used to extend into the two ends of the inner groove respectively. Through the limiting effect, the welding sub-component is directly calibrated to a horizontal state, which is convenient for subsequent processing and achieves the purpose of streamlining operations.

[0023] (3) Start the adjustment cylinder, the horizontal cylinder rod extends, and drives the displacement gear rod to move, thereby rotating the precision gear meshing with it, causing a set of rotating shafts to rotate, driving the adjustment seat to flip a certain angle, thereby automatically adjusting the welding angle of the weld. It can achieve welding of both sides of the weld from a single direction of the welding clamp, which is more flexible, saves time and effort, and improves welding quality.

[0024] (4) The operator slowly turns the handwheel with his other hand to adjust the shaft and drive the travel gear to rotate. The travel gear moves linearly along the fixed gear rod, driving the gravity car to move linearly, so that the welding rod moves slowly over the weld while welding until the entire weld area is covered. Compared with the manual welding method without tooling, it is more stable. When the travel gear rotates, each set of external teeth will collide with the jamming piece in the gap, causing the bent spring steel of the jamming piece to bend and deform, so that the jamming piece passes over the set of external teeth and then returns to its original position. The jamming force will be transmitted to the operator's rotating handwheel, and the jamming sense is used to effectively control the moving speed of the welding rod, which has a better control effect, avoids welding leaks, and saves time and effort.

[0025] (5) The lifting rod drives the scraper seat to descend, so that the lower ends of the two groups of flexible scrapers contact the upper end surface of the welding mother part, and then the hydraulic cylinders are started respectively, the hydraulic rods extend, and the guide seat drives the two groups of flexible scrapers into the weld area. With the help of the power of the guide seat movement, the corrugated oil storage bag is compressed, so that part of the mineral oil inside it is evenly pressed into the oil bag, so that the volume of the hydraulic scraper oil bag and the hydraulic heat absorption oil bag expands after filling with oil, and partially extends out of the arc-shaped shell and fully fills the weld. The flexible filling effect is better, the contact area is increased, and it adapts to the uneven surface; the hydraulic heat absorption oil bag first contacts the welding slag layer, uses mineral oil to absorb heat and cool it, and accelerates its forming speed. Then, when the hydraulic scraper oil bag passes through the cooling area, it uses several groups of scraping heads to fully scrape off the welding slag layer on the formed weld, so as to achieve the purpose of automatically cleaning the residue, so that the flexible scraper has the three functions of calibration, cooling and scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of one direction of an automated welding tool for a refrigerated container structure according to the present invention;

[0027] Figure 2 This is a schematic diagram of the overall structure of an automated welding tool for a refrigerated box structure according to the present invention from another direction;

[0028] Figure 3 Schematic diagram of the transmission structure of the adjustment seat of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the adjustment seat of the present invention;

[0030] Figure 5 Schematic diagram of the specific structure of the synchronous positioner of the present invention;

[0031] Figure 6 This is a schematic diagram of the installation position of the gravity vehicle of the present invention;

[0032] Figure 7 Schematic diagram of the internal structure of the horizontal moving trough of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the gravity vehicle of the present invention in one direction;

[0034] Figure 9 This is a structural diagram of the gravity vehicle of the present invention from another direction;

[0035] Figure 10 This is a schematic diagram of the connection of the cardon piece of the present invention;

[0036] Figure 11 Schematic diagram of the transmission structure of the scraper seat of the present invention;

[0037] Figure 12 This is a schematic diagram of the lower end structure of the scraper seat of the present invention;

[0038] Figure 13 Schematic diagram of the transmission structure of the guide seat of the present invention;

[0039] Figure 14 It is a schematic diagram of the connection structure of the flexible scraper of the present invention.

[0040] Figure: 1, side support; 2, adjustment seat; 3, rotating shaft; 4, first bearing seat; 5, precision gear; 6, displacement gear rod; 7, horizontal cylinder rod; 8, adjustment cylinder; 10, welding mother part; 11, welding sub-part; 12, strip groove; 13, bidirectional screw; 14, second bearing seat; 15, screw motor; 16, positive spiral pattern; 17, negative spiral pattern; 20, synchronous positioner; 21, motion 22. Screw nut sleeve; 23. L-shaped top seat; 24. Positioning surface; 25. Mounting sleeve; 26. Clamping cylinder; 27. Lifting cylinder rod; 28. Pressing plate; 29. ​​Pressing head; 30. Tool carrier; 31. Push-pull rod; 32. Slide rail; 33. Push-pull limit groove; 34. Horizontal movement groove; 35. Slide; 40. Gravity car; 41. First guide rib; 42. Articulated frame; 43. Arc welding clamp; 44. Clamp head; 45. Welding rod; 50. Drive slot; 51. Travel gear; 52. Connecting bearing seat; 53. Adjusting shaft; 54. Hand wheel; 55. Fixed gear rod; 56. Ear; 60. Positioning block; 61. Bent spring steel; 62. Caton; 70. Rodless cylinder seat; 71. Inner sliding block; 72. Outer extension seat; 73. Lifting cylinder; 74. Lifting rod; 75. Scraper seat; 76. Shock absorber Shell; 77, guide groove; 80, guide seat; 81, second guide rib; 82, hydraulic rod; 83, hydraulic cylinder; 84, arc-shaped shell; 90, corrugated oil storage bag; 91, positioning piece; 92, oil pipe; 93, connecting sleeve; 95, flexible scraper; 96, hydraulic scraper oil bag; 97, hydraulic heat-absorbing oil bag; 98, scraper head; 100, No. 1 cable; 101, No. 2 cable; 102, electrode clamp. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0042] like Figure 1-14 As shown, this embodiment provides an automated welding tooling for a refrigerated box structure, including a side support 1, an adjustment seat 2 is rotatably arranged between two groups of side supports 1, and rotating shafts 3 are symmetrically welded at both ends of the adjusting seat 2. Each group of rotating shafts 3 utilizes a first bearing seat 4 and an internal connection with the side support 1, one group of rotating shafts 3 is sleeved with a precision gear 5, and a displacement gear rod 6 is meshed at the lower end of the precision gear 5, and a horizontal cylinder rod 7 is welded to one end of the displacement gear rod 6, and the horizontal cylinder rod 7 extends outward from the inside of the adjusting cylinder 8, and the adjusting cylinder 8 is horizontally fixed inside the side support 1.

[0043] Furthermore, a welding mother part 10 is placed on the upper end surface of the adjustment seat 2, and a welding sub-part 11 is provided on the upper end of the welding mother part 10. The welding mother part 10 and the welding sub-part 11 form two sets of symmetrically distributed welds. The welding mother part 10 is generally a steel plate, and the welding sub-part 11 is generally a square steel. Figure 1-Figure 3 shown.

[0044] Among them, the interior of the adjustment seat 2 is symmetrically opened with two groups of strip grooves 12, and the interior of the adjustment seat 2 is rotatably provided with a bidirectional screw rod 13 running through the two groups of strip grooves 12. The two ends of the bidirectional screw rod 13 are fixed by the second bearing seat 14 and the inner wall of the adjustment seat 2. One end of the bidirectional screw rod 13 extends outward and is connected to a screw motor 15 through a coupling. The screw motor 15 is horizontally arranged inside the adjustment seat 2, as shown in FIG. Figure 3 and Figure 4 shown.

[0045] Furthermore, the bidirectional screw rod 13 is symmetrically provided with a forward spiral portion 16 and a reverse spiral portion 17, and a synchronous positioner 20 is movably provided on the forward spiral portion 16 and the reverse spiral portion 17. Figure 4 shown.

[0046] Specifically, the synchronous positioner 20 includes a moving seat 21, a screw nut sleeve 22, an L-shaped top seat 23, a positioning surface 24, a mounting sleeve 25, a clamping cylinder 26, a lifting cylinder rod 27, a pressure plate 28 and a pressure head 29. Figure 5 shown.

[0047] In this embodiment, the moving seat 21 is located inside the adjusting seat 2, and a screw nut sleeve 22 (a nut with spiral motion is provided in the screw nut sleeve 22) is installed in the middle of the moving seat 21, which acts on the forward spiral portion 16 and the reverse spiral portion 17. An L-shaped top seat 23 is welded on the top of the moving seat 21. The L-shaped top seat 23 passes through the strip groove 12 and moves linearly along the strip groove 12. The strip groove 12 plays the role of limiting guide. The inner side of the L-shaped top seat 23 is provided with a positioning surface 24 that acts on the end face of the welding mother part 10.

[0048] In this embodiment, a mounting sleeve 25 is provided on the L-shaped top seat 23, and a clamping cylinder 26 is vertically installed in the mounting sleeve 25. A lifting cylinder rod 27 is movably provided inside the clamping cylinder 26 and extends downward. The lower end of the lifting cylinder rod 27 is connected to a pressure plate 28. The lower end of the pressure plate 28 is evenly welded with several groups of pressure heads 29 that act on the welding sub-component 11. The pressure heads 29 are used to press the welding sub-component 11 onto the welding mother component 10.

[0049] The width of the pressing plate 28 can be designed to be the same as the width of the inner groove of the welding sub-assembly 11. By using two sets of pressing plates 28 to extend into the two ends of the inner groove respectively, the welding sub-assembly 11 can be directly calibrated to a horizontal state.

[0050] Furthermore, the front end surfaces of the two sets of side supports 1 are provided with push-pull limit grooves 33, and push-pull rods 31 are movably provided in the two sets of push-pull limit grooves 33. Slide rails 32 are installed on the sides of the push-pull rods 31. The slide rails 32 and the push-pull limit grooves 33 move relative to each other. A tooling carrier 30 is riveted between the two sets of push-pull rods 31. Figure 1 and Figure 6 shown.

[0051] Specifically, a horizontal movable groove 34 is opened upwardly and horizontally inside the tool carrier 30, and a gravity car 40 is installed in the horizontal movable groove 34. The two side surfaces of the gravity car 40 are symmetrically welded with first guide ribs 41 that interact with the groove wall of the horizontal movable groove 34. The first guide ribs 41 play a limiting and guiding role. An articulated frame 42 is installed on the upper end of the gravity car 40. An arc welding clamp 43 is movably installed in the articulated frame 42. The arc welding clamp 43 rotates around the articulated frame 42 and has a damping force when rotating. The end of the arc welding clamp 43 is provided with a clamp head 44 for clamping the welding rod 45. The welding rod 45 acts on the connection between the welding mother component 10 and the welding sub-component 11, as shown in FIG. Figure 6-Figure 8 shown.

[0052] Furthermore, a driving slot 50 is provided at the bottom of the gravity vehicle 40, and a traveling gear 51 is provided in the driving slot 50 for rotation. Figure 9 shown.

[0053] Among them, the middle part of the traveling gear 51 extends outward horizontally and is welded with an adjusting shaft 53. A connecting bearing seat 52 is provided on the outside of the adjusting shaft 53. A hand wheel 54 is installed at the end of the adjusting shaft 53 passing through the connecting bearing seat 52. The hand wheel 54 is located on the outside of the tooling carrier 30. The outer side surface of the tooling carrier 30 is provided with a slide groove 35 for the connecting bearing seat 52 to move. The connecting bearing seat 52 moves linearly along the slide groove 35. Figure 7-Figure 9 shown.

[0054] Among them, the travel gear 51 partially extends out of the drive slot 50 and is meshed with a fixed gear rod 55. The two ends of the fixed gear rod 55 are connected to the inside of the tooling carrier 30 through ear pieces 56. Figure 7 shown.

[0055] In this embodiment, a positioning block 60 is riveted on the groove wall of the driving groove 50, and one end of the positioning block 60 is connected to a bent spring steel 61, which has the ability to reset after deformation. One end of the bent spring steel 61 is connected to a cardan piece 62, which extends into the outer tooth gap of the traveling gear 51. The tooth pitch can be changed according to actual conditions, such as Figure 9 and Figure 10 shown.

[0056] Furthermore, a rodless cylinder seat 70 is horizontally installed on the top of the two sets of side supports 1. An inner sliding block 71 is provided inside the rodless cylinder seat 70. An outer extension seat 72 is installed at the lower end of the inner sliding block 71. The outer extension seat 72 is slidably provided at the lower end of the rodless cylinder seat 70. Figure 11 and Figure 12 shown.

[0057] Among them, the interior of the outer extension seat 72 is vertically installed with a lifting cylinder 73, and the interior of the lifting cylinder 73 is movably provided with a lifting rod 74. The lower end of the lifting rod 74 is welded with a scraping seat 75. The lower end of the outer extension seat 72 is riveted with a shock-absorbing outer shell 76 that acts on the scraping seat 75. The shock-absorbing outer shell 76 plays the role of shock absorption and guidance. Figure 2 、 Figure 11 and Figure 12 shown.

[0058] Specifically, two sets of guide grooves 77 are symmetrically opened downwardly inside the scraper seat 75, and a guide seat 80 is movably provided in each set of guide grooves 77. The two sides of the guide seat 80 are symmetrically welded with second guide ribs 81 that act on the groove wall of the guide groove 77. The second guide ribs 81 play the role of limiting guide, such as Figure 12 and Figure 13 shown.

[0059] The upper end of the guide seat 80 is penetrated by a hydraulic rod 82, which extends horizontally outward from the inside of a hydraulic cylinder 83. The hydraulic cylinder 83 is installed on the outer side of the scraper seat 75. Figure 13 shown.

[0060] Furthermore, a corrugated oil storage bag 90 is provided between the two groups of guide seats 80. The corrugated oil storage bag 90 has the ability to reset after deformation. Mineral oil is stored in the corrugated oil storage bag 90. The mineral oil has heat absorption and hydraulic properties. The two ends of the corrugated oil storage bag 90 are riveted to the outer side of the guide seat 80 using a positioning piece 91. Both ends of the corrugated oil storage bag 90 are connected to an oil pipe 92. The oil pipes 92 are respectively located in the guide seat 80. The lower end of the oil pipe 92 is connected to a flexible scraper 95. The upper end of the flexible scraper 95 is fixed with a connecting sleeve 93 through which the oil supply pipe 92 passes. The lower end of the guide seat 80 is fixed with an arc-shaped shell 84 that wraps the flexible scraper 95. It is an open structure with the opening direction facing the weld. The arc-shaped shell 84 plays a role of fixing and limiting to ensure that the flexible scraper 95 expands toward the weld direction. Figure 13 and Figure 14 shown.

[0061] In this embodiment, the flexible scraper 95 acts on the weld between the welding mother component 10 and the welding sub-component 11. The flexible scraper 95 includes a hydraulic scraper oil bag 96 and a hydraulic heat-absorbing oil bag 97, which are integrally connected. The oil bag is made of high-temperature resistant material. The hydraulic scraper oil bag 96 and the hydraulic heat-absorbing oil bag 97 are in a wrinkled state in their natural state and are filled with mineral oil. The bottom of the hydraulic scraper oil bag 96 is evenly distributed with a plurality of scraping heads 98 that act on the welding slag layer. Figure 13 and Figure 14 shown.

[0062] Furthermore, the arc welding clamp 43 is electrically connected to an external welding power source via a No. 1 cable 100 , and the edge of the welding mother component 10 is connected using an electrode clamp 102 , and the electrode clamp 102 is electrically connected to an external welding power source via a No. 2 cable 101 .

[0063] Furthermore, the welding tool can be applied to various welding parts after simple modification.

[0064] When using this embodiment, the welding mother part 10 is first placed flat on the upper end surface of the adjustment seat 2 according to the welding position, and then the screw motor 15 is started to drive the bidirectional screw 13 to rotate, thereby causing the two groups of synchronous positioners 20 to move toward each other along the strip groove 12 (the two groups of moving seats 21 respectively use the screw nut sleeve 22 and the forward spiral portion 16 and the reverse spiral portion 17 to act on each other) until the positioning surface 24 contacts the end surface of the welding mother part 10, and the two groups of synchronous positioners 20 use the L-shaped top seat 23 to clamp and position the welding mother part 10 on the left and right, and then clamp the electrode clamp 102 on the welding mother part 10.

[0065] At this time, the welding sub-component 11 is placed on the welding mother component 10, and the two groups of L-shaped top seats 23 are extended into the interior of the welding sub-component 11. The clamping cylinder 26 is started, and the lifting cylinder rod 27 drives the pressure plate 28 to descend. Several groups of pressure heads 29 are slightly pressed on the inner wall of the welding sub-component 11, which only plays a limiting role. At this time, the lifting cylinder 73 is started, and the lifting rod 74 drives the scraper seat 75 to descend, so that the two groups of flexible scrapers 95 are located on both sides of the welding sub-component 11. Then the hydraulic cylinder 83 is started respectively, and the hydraulic rod 82 extends, driving the guide seat 80 to move linearly along the guide groove 77. This allows the two groups of flexible scrapers 95 to move toward each other, approach the welding sub-component 11, and limit its center. Then the rodless cylinder seat 70 is operated, and the inner sliding block 71 moves linearly, so that the two groups of flexible scrapers 95 move from one end of the welding sub-component 11 to the other end. In this process, the position of the welding sub-component 11 is horizontally corrected. Then the lifting cylinder rod 27 drives several groups of pressure heads 29 to press on the inner wall of the welding sub-component 11 with a greater extrusion force, clamping and fixing the two ends of the welding sub-component 11, and allowing the lifting rod 74 to drive the scraper seat 75 to return upward.

[0066] At this time, the welding operation begins. First, the adjusting cylinder 8 is started, and the horizontal cylinder rod 7 is extended, driving the displacement gear rod 6 to move, so that the precision gear 5 meshing with it rotates counterclockwise, causing a set of rotating shafts 3 to rotate accordingly, driving the adjusting seat 2 to flip a certain angle, so that the weld on one side is located directly below the welding rod 45. After the external welding power supply is powered, the operator holds the arc welding clamp 43 with one hand and rotates it around the articulated frame 42, so as to effectively control and adjust the welding angle. A stable burning arc is generated between the welding rod 45 and the weld, generating high temperature so that the welding rod 45 and the workpiece gradually melt to form a molten pool.

[0067] The operator slowly turns the handwheel 54 with his other hand, and the adjusting shaft 53 drives the traveling gear 51 to rotate. The traveling gear 51 moves linearly along the fixed gear rod 55, thereby driving the gravity car 40 to move linearly along the horizontal moving groove 34, so that the welding rod 45 moves slowly above the weld while welding until the entire weld area is covered. When the traveling gear 51 rotates, each set of external teeth will collide with the jamming piece 62 in the gap, causing the bent spring steel 61 of the jamming piece 62 to bend and deform, causing the jamming piece 62 to pass over the set of external teeth and then return to its original position. The jamming force will be transmitted to the operator's rotating handwheel 54, and the jamming sense is used to effectively control the moving speed of the welding rod 45 to avoid welding leaks.

[0068] As the welding rod 45 is melted and consumed, its length becomes shorter and the distance from the weld becomes longer. At this time, by pushing the tooling carrier 30, the two sets of push-pull rods 31 move into the push-pull limit groove 33 respectively, so that the welding rod 45 is positioned close to the weld, ensuring that the distance between the two remains unchanged, thereby improving the welding effect. When the welding of one side of the weld is completed, the horizontal cylinder rod 7 is immediately recovered. After a series of transmissions, the adjustment seat 2 is caused to rotate in the opposite direction, so that the weld on the other side is located directly below the welding rod 45. The above operations are repeated. After all welding work is completed, wait for the slag layer to cool down and wait for the weld to be formed.

[0069] At this time, the lifting rod 74 is again used to drive the scraper seat 75 to descend, so that the lower ends of the two sets of flexible scrapers 95 contact the upper end surface of the welding mother part 10, and then the hydraulic cylinders 83 are respectively started, the hydraulic rod 82 is extended, and the guide seat 80 drives the two sets of flexible scrapers 95 into the weld area. In the process of the two sets of guide seats 80 moving toward each other, the corrugated oil storage bag 90 is compressed, so that part of the mineral oil inside it is evenly pressed into the hydraulic scraper oil bag 96 and the hydraulic heat absorbing oil bag 97 of the two sets of flexible scrapers 95, thereby making the hydraulic scraper oil bag 96 6 and the hydraulic heat-absorbing oil bag 97 expand in volume after being filled with oil, partially extending out of the arc-shaped shell 84 and fully filling the weld. At this time, the flexible scraper 95 again moves from one end of the welding sub-component 11 to the other end with the movement of the inner sliding block 71. During the movement, the hydraulic heat-absorbing oil bag 97 first contacts the welding slag layer, uses mineral oil to absorb heat and cool it, and accelerates its forming speed. Then, when the hydraulic scraper oil bag 96 passes through the cooling area, it uses several groups of scraping heads 98 to fully scrape off the welding slag layer on the formed weld, thereby achieving the purpose of automatically cleaning the residue.

[0070] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0071] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated welding tool for a refrigerated container structure, comprising a side support (1), characterized in that: A rodless cylinder seat (70) is horizontally installed on the top of the two groups of side supports (1), an inner sliding block (71) is provided inside the rodless cylinder seat (70), an outer extension seat (72) is installed at the lower end of the inner sliding block (71), a lifting cylinder (73) is vertically installed downward inside the outer extension seat (72), a lifting rod (74) is movably provided downward inside the lifting cylinder (73), and a scraper seat (75) is welded to the lower end of the lifting rod (74); Two groups of guide grooves (77) are symmetrically provided downwardly in the interior of the scraper seat (75), and a guide seat (80) is movably provided in each group of the guide grooves (77). A hydraulic rod (82) is installed through the upper end of the guide seat (80), and the hydraulic rod (82) extends horizontally outward from the interior of the hydraulic cylinder (83). A corrugated oil storage bag (90) is provided between the two groups of the guide seats (80), and mineral oil is stored in the corrugated oil storage bag (90). Both ends of the corrugated oil storage bag (90) are connected to oil pipes (92), and the oil pipes (92) are respectively located in the guide seats (80). The lower end of the oil pipe (92) is connected to a flexible scraper (95), and the upper end of the flexible scraper (95) is fixed with a connecting sleeve (93) through which the oil supply pipe (92) passes. The lower end of the guide seat (80) is fixed with an arc-shaped shell (84) that wraps the flexible scraper (95); The flexible scraper (95) acts on the weld seam between the welding mother component (10) and the welding subcomponent (11). The flexible scraper (95) includes a hydraulic scraper oil bag (96) and a hydraulic heat-absorbing oil bag (97). The hydraulic scraper oil bag (96) and the hydraulic heat-absorbing oil bag (97) are in a wrinkled state in a natural state. A plurality of scraper heads (98) acting on the welding slag layer are evenly distributed on the bottom of the hydraulic scraper oil bag (96).

2. The automated welding tool for refrigerated container structures according to claim 1, characterized in that: An adjustment seat (2) is rotatably arranged between the two groups of side supports (1), and rotating shafts (3) are symmetrically welded at both ends of the adjustment seat (2). Each group of rotating shafts (3) is connected to the inside of the side support (1) by using a first bearing seat (4). A precision gear (5) is sleeved on one group of rotating shafts (3), and a displacement gear rod (6) is meshed with the lower end of the precision gear (5). A horizontal cylinder rod (7) is welded to one end of the displacement gear rod (6). The horizontal cylinder rod (7) extends outward from the inside of an adjustment cylinder (8), and the adjustment cylinder (8) is horizontally fixed inside the side support (1).

3. The automated welding tool for refrigerated container structures according to claim 2, characterized in that: A welding mother part (10) is placed on the upper end surface of the adjustment seat (2), and a welding sub-part (11) is provided on the upper end of the welding mother part (10). Two groups of strip grooves (12) are symmetrically opened upward in the interior of the adjustment seat (2). A bidirectional screw rod (13) is rotatably provided inside the adjustment seat (2) and passes through the two groups of strip grooves (12). The two ends of the bidirectional screw rod (13) are fixed by using a second bearing seat (14) and the inner wall of the adjustment seat (2). One end of the bidirectional screw rod (13) extends outward and is connected to a screw motor (15) through a coupling.

4. The automated welding tool for refrigerated container structures according to claim 3, characterized in that: A forward spiral portion (16) and a reverse spiral portion (17) are symmetrically distributed on the bidirectional screw rod (13), and a synchronous positioner (20) is movably provided on both the forward spiral portion (16) and the reverse spiral portion (17).

5. The automated welding tool for refrigerated container structure according to claim 4, characterized in that: The synchronous positioner (20) comprises a moving seat (21), a screw nut sleeve (22), an L-shaped top seat (23), a positioning surface (24), a mounting sleeve (25), a clamping cylinder (26), a lifting cylinder rod (27), a pressure plate (28) and a pressure head (29). The moving seat (21) is located inside the adjustment seat (2). The middle part of the moving seat (21) is provided with a screw nut sleeve (22) for acting on the forward spiral pattern portion (16) and the reverse spiral pattern portion (17). The top of the moving seat (21) is welded with an L-shaped top seat (23). The L-shaped top seat (23) passes through the strip. The L-shaped top seat (23) is provided with a positioning surface (24) on the inner side thereof for acting on the end face of the welding mother component (10), and a mounting sleeve (25) is provided on the L-shaped top seat (23). A clamping cylinder (26) is vertically mounted in the mounting sleeve (25). A lifting cylinder rod (27) is movably provided in the interior of the clamping cylinder (26) for extending downward. The lower end of the lifting cylinder rod (27) is connected to a pressure plate (28), and the lower end of the pressure plate (28) is evenly welded with a plurality of pressure heads (29) for acting on the welding sub-component (11).

6. The automated welding tool for refrigerated container structure according to claim 5, characterized in that: The front end surfaces of the two groups of side supports (1) are provided with push-pull limit grooves (33), and push-pull rods (31) are movably provided in the two groups of push-pull limit grooves (33). The sides of the push-pull rods (31) are provided with slide rails (32). A tool carrier (30) is riveted between the two groups of push-pull rods (31). A horizontal moving groove (34) is provided in the interior of the tool carrier (30) facing upward, and a gravity vehicle (40) is installed in the horizontal moving groove (34). The two side surfaces of the gravity vehicle (40) are symmetrically welded with first guide ribs (41) that interact with the walls of the horizontal movable groove (34). The upper end of the gravity vehicle (40) is installed with an articulated frame (42), and an arc welding clamp (43) is movably installed in the articulated frame (42). The end of the arc welding clamp (43) is provided with a clamp head (44) for clamping a welding rod (45), and the welding rod (45) acts on the connection between the welding mother component (10) and the welding sub-component (11).

7. The automated welding tool for a refrigerated container structure according to claim 6, characterized in that: A driving groove (50) is provided at the bottom of the gravity vehicle (40), a traveling gear (51) is rotatably provided in the driving groove (50), an adjusting shaft (53) is welded to the middle portion of the traveling gear (51) extending horizontally outward, a connecting bearing seat (52) is provided on the outer side of the adjusting shaft (53), a hand wheel (54) is installed at the end of the adjusting shaft (53) passing through the connecting bearing seat (52), and a sliding groove (35) for the connecting bearing seat (52) to move is provided on the outer side surface of the tooling carrier (30).

8. The automated welding tool for refrigerated container structures according to claim 7, characterized in that: A fixed gear rod (55) is provided on the outside of the driving groove (50) and partially extends out of the traveling gear (51), and both ends of the fixed gear rod (55) are connected to the inside of the tooling carrier (30) through ear pieces (56).

9. The automated welding tool for refrigerated container structure according to claim 8, characterized in that: A positioning block (60) is riveted on the groove wall of the driving groove (50), one end of the positioning block (60) is connected to a bent spring steel (61), one end of the bent spring steel (61) is connected to a jamming piece (62), and the jamming piece (62) extends into the outer tooth gap of the traveling gear (51).

10. The automated welding tool for refrigerated container structure according to claim 1, characterized in that: The two side surfaces of the guide seat (80) are symmetrically welded with second guide ribs (81) acting on the groove wall of the guide groove (77); the hydraulic cylinder (83) is installed on the outer side surface of the scraper seat (75); and both ends of the corrugated oil storage bag (90) are riveted to the outer side surface of the guide seat (80) using positioning pieces (91).

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