Welding positioning tool

Abstract

The utility model provides a welding positioning tool which comprises a positioning assembly provided with an air channel, the air channel is used for being communicated with an air storage device, the positioning assembly comprises a first positioning part, a second positioning part, a first air blowing end and a second air blowing end, and the first positioning part and the second positioning part are spaced to form a first positioning space. The first positioning space is used for positioning a first part of a welded workpiece, the first blowing end is connected with the first positioning part and is communicated by the air channel, the second blowing end is connected with the second positioning part and is communicated by the air channel, and the first blowing end and the second blowing end are used for blowing protective gas of the gas storage device to the welded workpiece. The welding positioning tool is suitable for providing positioning and protective gas for a welded workpiece with a complex shape, so that a welded finished product with a cavity or a groove and a complex shape is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a welding positioning tool. Background Art

[0002] During the welding process of the workpiece, the weld of the workpiece is heated and melted to form a molten pool. At this time, the weld is easily oxidized and an oxide film is produced. The oxide film will make it difficult for the surface of the final welded product to retain the coating or plating for a long time. The coating or plating covering the oxide film is easy to fall off and affect the performance and aesthetics of the welded product. For the above problems, the existing countermeasure is to blow an inert shielding gas into the weld to block the oxidation reaction of the molten pool. Commonly used shielding gas blowing methods include coaxial blowing, side-axis blowing, etc., but these methods are generally suitable for welds with relatively flat and simple shapes. When the welded product has a complex shape, such as a cavity or groove, the current shielding gas blowing method cannot reliably block the contact between the weld and oxygen, and an oxide film is still generated in the end. Utility Model Content

[0003] In view of this, a welding positioning tool is provided, which can provide positioning and protective gas for a welded workpiece with complex shapes, thereby obtaining a welded product with complex shapes having a cavity or a groove.

[0004] The welding positioning tool provided by the utility model comprises a positioning component with an air channel, the air channel is used to connect the gas storage device, the positioning component comprises a first positioning part, a second positioning part, a first blowing end and a second blowing end, the first positioning part and the second positioning part are spaced apart from each other to form a first positioning space, the first positioning space is used to position the first part of the workpiece to be welded, the first blowing end is connected to the first positioning part and is penetrated by the air channel, the second blowing end is connected to the second positioning part and is penetrated by the air channel, the first blowing end and the second blowing end are used to blow the protective gas of the gas storage device to the workpiece to be welded.

[0005] The welding positioning tool of the utility model has the following beneficial effects:

[0006] The first positioning space allows the first part of the workpiece to be welded to be placed therein, so that the workpiece to be welded forms a weld and receives a shielding gas blown thereon when the positioning assembly is fixed. The first blowing end can blow shielding gas toward the weld on one side of the workpiece to be welded, and the second blowing end can blow shielding gas toward the weld on the other side of the workpiece to be welded, thereby achieving shielding gas blown on both sides of the weld at the same time, and the shielding gas can fully block the weld from oxygen. Therefore, the welding positioning tooling of the utility model is suitable for providing positioning and shielding gas to workpieces to be welded with complex shapes, thereby obtaining welding products with complex shapes having chambers or grooves.

[0007] In one embodiment, the positioning assembly also includes a third positioning portion, a fourth positioning portion, a third blowing end and a fourth blowing end. The third positioning portion and the fourth positioning portion are spaced apart from each other to form a second positioning space. The second positioning space is used to position the second part of the workpiece to be welded. The third blowing end is connected to the fourth positioning portion and is penetrated by the air duct, so as to blow the protective gas of the gas storage device to the workpiece to be welded.

[0008] In this way, the second positioning space allows the second part of the workpiece to be welded to be placed therein, the first positioning portion and the third positioning portion can be close to the two inner walls of the finished welding product, respectively, the second positioning portion and the third positioning portion can be close to the two outer walls of the finished welding product, respectively, the first blowing end is used to blow protective gas into the chamber or groove of the finished welding product, and the second blowing end and the third blowing end blow protective gas on the outside of the finished welding product.

[0009] In one embodiment, the first positioning portion and the third positioning portion are arranged on different planes, and the first blowing end is formed at a first edge between the first positioning portion and the third positioning portion.

[0010] With such arrangement, the first edge can fit the weld in the cavity or groove of the finished weld product, and the first blowing end can blow the protective gas directly to the weld surface between two adjacent inner walls of the finished weld product.

[0011] In one embodiment, the first edge includes a first chamfer for forming a first blowing end.

[0012] Such an arrangement can prevent the first blowing end from contacting the weld, thereby ensuring that the molten pool formed by the workpieces being welded during welding will not be hot-melt connected to the first blowing end.

[0013] In one embodiment, the positioning assembly further includes a first end portion disposed unequally with the second positioning portion, the first end portion does not protrude from the third positioning portion, and the second blowing end is formed at an edge between the first end portion and the second positioning portion.

[0014] Such an arrangement can avoid the second blowing end being flush with the welding seam, thereby causing the molten pool formed by the welded workpiece to be hot-melt connected with the second blowing end.

[0015] In one embodiment, the positioning assembly further includes a second end portion disposed at an eccentric surface with the fourth positioning portion, the second end portion does not protrude from the first positioning portion, and the third blowing end is formed at an edge between the second end portion and the fourth positioning portion.

[0016] Such an arrangement can prevent the third blowing end from being flush with the weld, thereby preventing the molten pool formed by the welded workpiece from being hot-melt-connected with the third blowing end.

[0017] In one embodiment, the first positioning portion is integrally connected to the third positioning portion.

[0018] With such arrangement, the first positioning portion and the third positioning portion can be moved simultaneously so as to more quickly approach two adjacent inner walls of the finished welding product.

[0019] In one embodiment, the first positioning portion and the second positioning portion are separately provided.

[0020] With such arrangement, the distance between the first positioning portion and the second positioning portion can be adjusted so that the welding positioning tool can adapt to welded workpieces with different wall thicknesses.

[0021] In one embodiment, the third positioning portion and the fourth positioning portion are separately provided.

[0022] With such arrangement, the distance between the third positioning portion and the fourth positioning portion can be adjusted so that the welding positioning tool can adapt to welded workpieces with different wall thicknesses.

[0023] In one embodiment, the positioning assembly is configured with a second edge connected to the second positioning portion, and the second edge includes a second chamfer for forming a second blowing end.

[0024] Such an arrangement can prevent the material of the welded workpiece near the weld from being melted and connected to the second blowing end.

[0025] In one embodiment, the positioning assembly is configured with a third edge connected to the fourth positioning portion, and the third edge includes a third chamfer for forming a third blowing end.

[0026] Such an arrangement can prevent the material of the welded workpiece near the weld from being melted and connected to the third blowing end.

[0027] In one embodiment, the positioning assembly is configured with a first edge connected to the first positioning portion and forming a first blowing end, and a plurality of first blowing ports communicating with the air channel are arranged on the first edge.

[0028] With such arrangement, the shielding gas flowing along the gas passage can be blown out from multiple first blowing ports simultaneously to blow toward the weld of the workpiece being welded, so that different positions on the weld can be covered by the shielding gas at the same time, preventing local positions of the weld from coming into contact with oxygen without being blocked.

[0029] In one embodiment, the positioning assembly is configured with a second edge connected to the second positioning portion and forming a second blowing end, and a plurality of second blowing ports communicating with the air channel are arranged on the second edge.

[0030] With such arrangement, the shielding gas flowing along the gas passage can be blown out from multiple second blowing ports simultaneously to blow toward the weld of the workpiece being welded, so that different positions on the weld can be covered by the shielding gas at the same time, preventing local positions of the weld from coming into contact with oxygen without being blocked.

[0031] In one embodiment, the positioning assembly includes a first puzzle and a second puzzle that are spliced ​​and fixed, the first positioning portion is formed on at least one of the first puzzle and the second puzzle, and a first inner concave cavity is opened on a side of the first puzzle close to the second puzzle to form a partial airway; and / or,

[0032] The positioning assembly includes a third block and a fourth block that are spliced ​​and fixed. The second positioning portion is formed on at least one of the third block and the fourth block. A second inner concave cavity is opened on one side of the third block close to the fourth block to form a partial airway.

[0033] With this arrangement, the positioning components are simpler and the airway is easier to obtain, which reduces the difficulty and cost of forming the welding positioning tooling.

[0034] In one embodiment, the positioning assembly includes a first puzzle piece, a second puzzle piece, a third puzzle piece and a fourth puzzle piece.

[0035] The first positioning portion is formed on at least one of the first block and the second block. A partial air passage is opened on a side of the first block close to the second block and the first block is sealed and bonded to the second block.

[0036] The second positioning portion is formed on at least one of the third block and the fourth block. A partial air passage is opened on a side of the third block close to the fourth block, and the third block is sealed and bonded to the fourth block.

[0037] With such arrangement, it is not easy to generate gaps between the first block and the second block, and between the third block and the fourth block, which may cause the shielding gas to leak.

[0038] In one embodiment, it also includes a first driving mechanism, a positioning platform and a workpiece lifting part. The workpiece lifting part and the positioning platform are arranged opposite to each other and can be connected to the power output end of the first driving mechanism. The first driving mechanism is used to drive the workpiece lifting part to approach the positioning platform.

[0039] With such arrangement, the first driving mechanism can drive the positioning assembly located on the workpiece to be welded to be fixedly abutted against the positioning platform, thereby improving the positioning stability of the positioning assembly on the workpiece to be welded.

[0040] In one embodiment, a second driving mechanism connected to the first positioning portion and / or the second positioning portion is further included. The first positioning portion and the second positioning portion are separately arranged, and the second driving mechanism is used to drive the first positioning portion and the second positioning portion to approach each other.

[0041] With such arrangement, the second driving mechanism can drive the first positioning portion and the second positioning portion to clamp and fix the workpiece to be welded so as to improve the position stability of the workpiece to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural schematic diagram of a welding positioning tool according to an embodiment of the utility model;

[0043] Figure 2 for Figure 1 The enlarged schematic diagram of the welding positioning tooling at position A shown in FIG.

[0044] Figure 3 It is a partial structural schematic diagram of a welding positioning tool according to an embodiment of the utility model;

[0045] Figure 4 It is a partial structural schematic diagram of a welding positioning tool according to an embodiment of the utility model;

[0046] Figure 5 It is a partial structural schematic diagram of a welding positioning tool according to an embodiment of the utility model;

[0047] Figure 6 for Figure 5 The enlarged schematic diagram of the welding positioning fixture at position B is shown;

[0048] Figure 7 It is a partial structural exploded view of a welding positioning tool according to an embodiment of the utility model;

[0049] Figure 8 It is a partial structural exploded view of a welding positioning tool according to an embodiment of the utility model;

[0050] Fig. 9 The present invention is a schematic structural diagram of a workpiece to be welded of a welding positioning tool adapted for use in an embodiment of the present invention.

[0051] Description of reference numerals: 10, first positioning module; 101, first puzzle; 102, second puzzle; 11, first positioning portion; 12, third positioning portion; 13, first blowing end; 131, first blowing port; 132, first edge; 1321, first chamfer; 14, first flow channel; 141, first inner concave cavity; 20, second positioning module; 201, third puzzle; 202, fourth puzzle; 21, second positioning portion; 22, second blowing end; 221, second blowing port; 222, second edge; 2221, second chamfer; 23, second flow channel; 231, Second inner cavity; 24, first end; 30, third positioning module; 301, fifth block; 302, sixth block; 31, fourth positioning portion; 32, third blowing end; 322, third edge; 3221, third chamfer; 34, second end; 40, positioning platform; 50, first drive mechanism; 51, first cylinder; 52, workpiece lifting portion; 60, second drive mechanism; 61, second cylinder; 62, positioning push plate; 71, second drainage pipe; 72, third drainage pipe; 80, workpiece to be welded; 801, first part; 802, second part; 81, weld DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0054] The utility model provides a welding positioning tool, which is used to fix a workpiece 80 to be welded and blow a shielding gas to the workpiece 80 to be welded, specifically, blow a shielding gas to the weld 81 of the workpiece 80 to be welded, the shielding gas disperses the oxygen near the weld 81 and covers the weld 81 to prevent the weld 81 from being oxidized under high temperature, and to prevent the formation of an oxide film on the weld 81, which will reduce the adhesion of paint or coating on the welded product. The usual technical means to solve the problem of oxide film is to grind the welded product. By using the welding positioning tool of the utility model to weld the workpiece 80 to be welded, the welded product finally obtained will not produce an oxide film, and the operation of grinding the surface of the welded product, especially grinding the weld 81, is omitted. The following is a welding positioning tool for welding the workpiece 80 to be welded. Fig. 9 The structure and working principle of the welding positioning tool are introduced by taking the positioning of the workpiece 80 to be welded and the blowing of protective gas as an example.

[0055] Fig. 9 The middle left half of the figure shows a workpiece 80 before welding, and the workpiece 80 includes a rectangular plate and four side plates respectively connected to the periphery of the rectangular plate; Fig. 9 The right half of the figure shows the structure of the workpiece 80 after being bent. At this time, the four side plates are bent relative to the rectangular flat plate, and the side plates and the rectangular flat plate together form a cavity. A weld 81 will be formed between any two adjacent side plates under the action of high temperature. Fig. 9 The welded workpiece 80 shown forms a rectangular hollow container after welding, which can be used as an oil cup of a range hood.

[0056] Figures 1 to 8 The welding positioning tool shown is used for Fig. 9 The workpiece 80 to be welded is fixed and limited and the protective gas is blown. The welding process used can be continuous laser welding. The weld 81 is formed at the edge of two adjacent side plates. Figures 1 to 8 The welding fixture shown is used for Fig. 9 The workpiece 80 to be welded is shown in the figure, and the protective gas is supplied when the workpiece 80 is being welded and fixed between side plates.

[0057] The following is a detailed introduction to the welding positioning tool of the utility model. Figure 1-2 , Figure 4-5 The welding positioning tooling includes a positioning component and a drainage component. The positioning component is used to fix the workpiece 80 to be welded. An air passage is provided inside the positioning component, and the positioning component includes a blowing end which is penetrated by the air passage to form an air blowing port. The drainage component connects the positioning component and the gas storage device. The internal channel of the drainage component connects the air passage and the gas storage device so that the gas storage device connects the air passage, so that the shielding gas in the gas storage device can flow along the drainage component and the air passage and finally blow out from the blowing end to blow toward the weld 81. When the workpiece 80 to be welded is fixed by the positioning component, the weld 81 is first formed on the workpiece 80 to be welded, and then the gas storage device is opened to blow the shielding gas toward the workpiece 80 to be welded fixed by the positioning component, so that the shielding gas drives away the oxygen near the weld 81 until the weld 81 solidifies and cools.

[0058] Specifically, the positioning assembly includes a first positioning portion 11, a second positioning portion 21, a first blowing end 13 and a second blowing end 22. The first positioning portion 11 and the second positioning portion 21 are spaced apart from each other to form a first positioning space. The first positioning space is used to position the first part 801 of the workpiece to be welded. The first blowing end 13 is connected to the first positioning portion 11 and is penetrated by an air duct to form a first blowing port 131. The second blowing end 22 is connected to the second positioning portion 21 and is penetrated by an air duct to form a second blowing port 221. The first blowing end 13 is used to blow the protective gas of the gas storage device to the workpiece to be welded 80 through the first blowing port 131. The second blowing end 22 is used to blow the protective gas of the gas storage device to the workpiece to be welded 80 through the second blowing port 221. The first positioning space can at least place the first part 801 of the workpiece to be welded 80.

[0059] Optional, see Figure 3 and Figure 6 When the first part 801 of the workpiece 80 to be welded is placed in the first positioning space between the first positioning portion 11 and the second positioning portion 21, at least one of the first positioning portion 11 and the second positioning portion 21 abuts against the first part 801 of the workpiece 80 to be welded to limit the freedom of movement of the workpiece 80 to be welded.

[0060] In some embodiments, the positioning assembly is used to fix the first positioning portion 11 and the second positioning portion 21. Fig. 9As shown, the welded workpiece 80 will eventually form a thin shell-shaped container with a hollow cavity. The first positioning space is used to place the side plate. When the side plate is placed in the first positioning space, one of the first positioning portion 11 and the second positioning portion 21 is located in the cavity of the welded workpiece 80, and the other is located outside the welded workpiece 80. One of the first blowing end 13 and the second blowing end 22 is used to blow protective gas to the side of the weld 81 close to the cavity, and the other is used to blow protective gas to the side of the weld 81 away from the cavity.

[0061] Optionally, when Fig. 9 When the side plate of the workpiece 80 to be welded is placed in the first positioning space, at least one of the first positioning portion 11 and the second positioning portion 21 abuts against the side plate to fix the workpiece 80 to be welded. Preferably, the first positioning portion 11 abuts against the side of the side plate close to the cavity, and the second positioning portion 21 abuts against the side of the side plate away from the cavity, so that the side plate is clamped and fixed.

[0062] Furthermore, in some embodiments, the positioning assembly also includes a third positioning portion 12, a fourth positioning portion 31 and a third blowing end 32. The first positioning portion 11 and the third positioning portion 12 are arranged on different surfaces. The fourth positioning portion 31 is connected to the third blowing end 32. The air duct penetrates the third blowing end 32 to form a third blowing port. The third blowing end 32 is used to blow the protective gas of the gas storage device to the workpiece 80 to be welded through the third blowing port. The third positioning portion 12 and the fourth positioning portion 31 are spaced from each other to form a second positioning space. The second positioning space is used to position the second part 802 of the workpiece 80 to be welded.

[0063] Optional, see Figure 3 and Figure 6 When the second portion 802 of the workpiece 80 to be welded is placed in the second positioning space, the third positioning portion 12 and at least one of the fourth positioning portion 31 abut against and stop the second portion 802 of the workpiece 80 to be welded to limit the freedom of movement of the workpiece 80 to be welded.

[0064] After the gas storage device is turned on, at least three shielding gas flows are formed, the first flow is blown out from the first blowing port 131, the second flow is blown out from the second blowing port 221, and the third flow is blown out from the third blowing port, and the three flows are blown toward the same weld 81 at the same time. The first flow blows the inner side of the weld 81 close to the cavity, and the second and third flows blow the outer side of the weld 81, ensuring that both the inner and outer sides of the weld 81 are not exposed to oxygen and preventing oxide films from forming on both the inner and outer sides of the weld 81.

[0065] Optionally, in some embodiments, the first positioning portion 11 and the third positioning portion 12 are integrally connected; in other embodiments, the first positioning portion 11 and the third positioning portion 12 are separately provided.

[0066] Optionally, in some embodiments, the third positioning portion 12 and the fourth positioning portion 31 are provided separately.

[0067] Specifically, when the positioning component is fixed Fig. 9 When the welded workpiece 80 is shown as a thin shell container with a cavity, the first side plate is placed between the first positioning portion 11 and the second positioning portion 21, and the second side plate is placed between the third positioning portion 12 and the fourth positioning portion 31. The first side plate and the second side plate are respectively connected to two adjacent edges of the rectangular flat plate, and a weld 81 is formed between the first side plate and the second side plate, which is referred to as the first weld 81. Figure 3 The first positioning portion 11 and the third positioning portion 12 are located in the cavity of the workpiece 80 to be welded, the second positioning portion 21 and the fourth positioning portion 31 are located outside the workpiece 80 to be welded, the first blowing end 13 blows protective gas toward the side of the weld 81 close to the cavity, and the second blowing end 22 and the third blowing end 32 blow protective gas toward the side of the weld 81 away from the cavity.

[0068] Optionally, when Fig. 9 When the first side plate of the workpiece to be welded 80 is placed in the first positioning space and the second side plate is placed in the second positioning space, at least one of the third positioning portion 12 and the fourth positioning portion 31 abuts against the second side plate. Preferably, the third positioning portion 12 abuts against the side of the second side plate close to the cavity, and the fourth positioning portion 31 abuts against the side of the second side plate away from the cavity. The second side plate is clamped and fixed by the third positioning portion 12 and the fourth positioning portion 31.

[0069] Specifically, see Figure 2-3 , Figure 5-6 , Figure 7-Figure 8 The positioning assembly includes a first positioning module 10, a second positioning module 20 and a third positioning module 30, and the drainage assembly includes a first drainage tube (not shown), a second drainage tube 71 and a third drainage tube 72. The first positioning module 10, the second positioning module 20 and the third positioning module 30 are evenly arranged in pairs; the airway includes a first flow channel 14 opened in the first positioning module 10, a second flow channel 23 opened in the second positioning module 20 and a third flow channel (not shown) opened in the third positioning module 30, the first drainage tube is connected to the first positioning module 10 and connected to the first flow channel 14, the second drainage tube 71 is connected to the second positioning module 20 and connected to the second flow channel 23, and the third drainage tube 72 is connected to the third positioning module 30 and connected to the third flow channel.

[0070] Before starting welding and fixing the welded workpiece 80, the first positioning module 10, the second positioning module 20 and the third positioning module 30 can be placed arbitrarily and dispersedly. When welding and fixing the welded workpiece 80, the first positioning module 10, the second positioning module 20 and the third positioning module 30 are fixedly assembled. After welding is completed, the first positioning module 10, the second positioning module 20 and the third positioning module 30 can be separated and scattered again.

[0071] Specifically, the first positioning portion 11 and the third positioning portion 12 are respectively formed on two unequal side walls of the first positioning module 10; the second positioning portion 21 is formed on a side of the second positioning module 20 close to the first positioning portion 11; and the fourth positioning portion 31 is formed on a side of the third positioning module 30 close to the third positioning portion 12. There is a gap between the first positioning module 10 and the second positioning module 20 for placing the first side plate, and there is a gap between the first positioning module 10 and the third positioning module 30 for placing the second side plate. The second positioning module 20 and the third positioning module 30 are spaced to expose the weld 81 away from the side of the cavity, so that the weld 81 can be irradiated by the high temperature source to form a molten pool. When the positioning assembly is fixed Fig. 9 In the welded workpiece 80 shown in FIG. 1 , the first positioning module 10 is located in the cavity of the welded workpiece 80 , and the second positioning module 20 and the third positioning module 30 are located outside the welded workpiece 80 .

[0072] Further, see Figure 2-3 , Figure 5-6 The first positioning module 10 includes a first blowing end 13, which is formed at a first edge 132 between the first positioning portion 11 and the third positioning portion 12, and the first flow channel 14 penetrates the first blowing end 13 to form a first blowing port 131; the second positioning module 20 includes a first end 24 arranged on a different plane from the second positioning portion 21, and the second blowing end 22 is formed on a second edge 222 between the second positioning portion 21 and the first end 24, and the second flow channel 23 penetrates the second blowing end 22 to form a second blowing port 221; the third positioning module 30 includes a second end 34 arranged on a different plane from the fourth positioning portion 31, and the third blowing end 32 is formed on a third edge 322 between the fourth positioning portion 31 and the second end 34, and the third flow channel penetrates the third blowing end 32 to form a third blowing port.

[0073] See also Figure 3 , Figure 5-6The first edge 132 includes a first chamfer 1321 to form a first blowing end 13, and the first flow channel 14 penetrates the first chamfer 1321 to form a first blowing port 131; the second edge 222 includes a second chamfer 2221 to form a second blowing end 22, and the second flow channel 23 penetrates the second chamfer 2221 to form a second blowing port 221; the third edge 322 includes a third chamfer 3221 to form a third blowing end 32, and the third flow channel penetrates the third chamfer 3221 to form a third blowing port. The setting of the first chamfer 1321 can separate the first blowing end 13 from the side of the weld 81 close to the inner cavity, avoiding welding of the first blowing end 13 and the weld 81. The second chamfer 2221 and the third chamfer 3221 separate the second blowing end 22 from the weld 81 and the third blowing end 32 from the weld 81, avoiding welding of the second blowing end 22 and the weld 81 and avoiding welding of the third blowing end 32 and the weld 81.

[0074] See also Figure 2 , Figure 5-6 , Figure 7-Figure 8 The first positioning module 10 includes a first block 101 and a second block 102 that are fixedly spliced ​​together, a first positioning portion 11 is formed on at least one of the first block 101 and the second block 102, and a third positioning portion 12 is formed on at least one of the first block 101 and the second block 102. Preferably, the first positioning portion 11 is formed on a side of the first block 101 away from the second block 102, and the third positioning portion 12 is formed on the first block 101 and the second block 102. The first block 101 includes a first edge 132 for forming a first blowing end 13, a first drainage tube is connected to the second block 102, and a first inner concave cavity 141 is provided on a side of the first block 101 close to the second block 102 to form a first flow channel 14 connected to the first drainage tube. Of course, the first inner concave cavity 141 can also be provided in the second block 102;

[0075] See also Figure 2 , Figure 5-6 , Figure 7-Figure 8 The second positioning module 20 includes a third block 201 and a fourth block 202 that are spliced ​​and fixed, a second positioning portion 21 is formed on at least one of the third block 201 and the fourth block 202, and a first end portion 24 is formed on at least one of the third block 201 and the fourth block 202. Preferably, the second positioning portion 21 is formed on the third block 201 and the fourth block 202, and the first end portion 24 is formed on a side of the third block 201 away from the fourth block 202. The third block 201 includes a second edge 222 for forming a second blowing end 22. The second drainage pipe 71 is connected to the fourth block 202. A second inner concave cavity 231 is provided on a side of the third block 201 close to the fourth block 202 to form a second flow channel 23 connected to the second drainage pipe 71. Of course, the second inner concave cavity 231 can also be provided in the fourth block 202;

[0076] See also Figure 2 , Figure 5-6 , Figure 7-Figure 8 The third positioning module 30 includes a fifth puzzle block 301 and a sixth puzzle block 302 that are spliced ​​and fixed, the third positioning portion 12 is formed on at least one of the fifth puzzle block 301 and the sixth puzzle block 302, and the second end portion 34 is formed on at least one of the fifth puzzle block 301 and the sixth puzzle block 302. Preferably, the third positioning portion 12 is formed on the side of the fifth puzzle block 301 away from the sixth puzzle block 302, the second end portion 34 is formed on the fifth puzzle block 301 and the sixth puzzle block 302, the fifth puzzle block 301 includes a third edge 322 for forming a third blowing end 32, the third drainage pipe 72 is connected to the sixth puzzle block 302, and a third inner concave cavity is opened on the side of the fifth puzzle block 301 close to the sixth puzzle block 302 to form a third flow channel connected to the third drainage pipe 72, and the third inner concave cavity can of course also be opened in the sixth puzzle block 302.

[0077] Preferably, the first block 101 and the second block 102 are sealed and bonded by sealing adhesive, the third block 201 and the fourth block 202 are sealed and bonded by sealing adhesive, and the fifth block 301 and the sixth block 302 are sealed and bonded by sealing adhesive, so that the sealing of the first flow channel 14, the second flow channel 23 and the third flow channel can be ensured, and the protective gas is prevented from leaking and dissipating from the gap between the first block 101 and the second block 102, the gap between the third block 201 and the fourth block 202, and the gap between the fifth block 301 and the sixth block 302.

[0078] See also Figure 3 , Figure 5-6 In order to expose the weld 81 on the side away from the cavity so that the weld 81 can be radiated by high-temperature energy and melted to form a molten pool, the first end 24 does not protrude from the third positioning portion 12, and a step surface is formed between the first end 24 and the first positioning portion 11, and the second end 34 does not protrude from the first positioning portion 11, and a step surface is formed between the second end 34 and the third positioning portion 12.

[0079] See also Figure 7-Figure 8 The first blowing end 13 is provided with a plurality of first blowing ports 131 connected to the first flow channel 14, and the plurality of first blowing ports 131 are arranged at intervals in a straight line along the first edge 132; the second blowing end 22 is provided with a plurality of second blowing ports 221 connected to the second flow channel 23, and the plurality of second blowing ports 221 are arranged at intervals in a straight line along the second edge 222; the third blowing end 32 is provided with a plurality of third blowing ports connected to the third flow channel, and the plurality of third blowing ports are arranged at intervals in a straight line along the third edge 322.

[0080] See also Figure 1 , Figure 4In some embodiments, the first positioning portion 11 and the second positioning portion 21 are separately arranged, the third positioning portion 12 and the fourth positioning portion 31 are separately arranged, and the welding positioning tooling also includes a first driving mechanism 50, a second driving mechanism 60, a positioning platform 40, and a workpiece lifting portion 52. The workpiece lifting portion 52 and the positioning platform 40 are arranged opposite to each other, and the workpiece lifting portion 52 can be connected to the power output end of the first driving mechanism 50. The second driving mechanism 60 is connected to at least one of the first positioning portion 11 and the second positioning portion 21. The workpiece lifting portion 52 is used to carry the welded workpiece 80, the first positioning module 10 and the third positioning module 30. The first driving mechanism 50 is used to drive the workpiece lifting portion 52 to move relatively close to the positioning platform 40, and the second driving mechanism 60 is used to drive the first positioning portion 11 and the second positioning portion 21 to approach each other.

[0081] Specifically, when the first positioning module 10 is placed in the cavity of the workpiece 80 to be welded and the first positioning module 10 is supported by one side of the rectangular flat plate of the workpiece 80 to be welded, the workpiece lifting portion 52 can support the other side of the rectangular flat plate of the workpiece 80 to be welded, and then, driven by the first driving mechanism 50, the workpiece 80 to be welded, the first positioning module 10 and the third positioning module 30 are lifted together toward the positioning platform 40 until the side of the positioning platform 40 close to the workpiece lifting portion 52 abuts against the first positioning module 10. At this time, the first positioning module 10 and the workpiece 80 to be welded are clamped and fixed between the workpiece lifting portion 52 and the positioning platform 40. Next, the second driving mechanism 60 drives the second positioning module 20 to approach the first positioning module 10, so that the first positioning portion 11 and the second positioning portion 21 clamp and fix the first side plate of the workpiece 80 to be welded.

[0082] Figure 1-2 , Figure 4 In the illustrated embodiment, the first driving mechanism 50 includes a first cylinder 51, the telescopic driving direction of the first cylinder 51 is perpendicular to the positioning platform 40, the cylinder push rod of the first cylinder 51 forms a power output part connected to the workpiece lifting part 52, and the second driving mechanism 60 includes a second cylinder 61 and a positioning push plate 62, the positioning push plate 62 is connected to the cylinder push rod of the second cylinder 61, and driven by the second cylinder 61, the positioning push plate 62 abuts and pushes the second positioning module 20 away from the side of the first positioning module 10, so that the second positioning module 20 is close to the first positioning module 10.

[0083] The positioning assembly included in the welding positioning tool of the utility model is adapted to the workpiece 80 to be welded, and the structural shape of the positioning assembly is adapted to the structural shape of the welding product finally formed by the workpiece 80 to meet the fixing requirements of the specific welding product. For welding products with different shapes and different inner cavity shapes, the blowing end of the positioning assembly has different shapes, for example, Figures 1 to 8In the illustrated embodiment, any one or more of the first edge 132 forming the first blowing end 13 , the second edge 222 forming the second blowing end 22 , and the third edge 322 forming the third blowing end 32 are curved edges, so that the positioning assembly can blow protective gas to the curved weld 81 .

[0084] In addition, the second blowing end 22 and the third blowing end 32 located outside the welded workpiece 80 can respectively blow the shielding gas to the outside of the weld 81 away from the cavity in different blowing directions, and the inside and outside of the weld 81 are respectively blown with shielding gas at the same time, which can avoid the formation of oxide film on the inside and outside of the weld 81. It can be understood that in other embodiments, the third positioning part 12 and the fourth positioning part 31 can also be omitted, that is, only the first positioning module 10 and the second positioning module 20 can be retained and the third positioning module 30 can be omitted. At this time, the shielding gas is blown by the second blowing end 22 to the outside of the weld 81, and the shielding gas is blown by the first blowing end 13 to the inside of the weld 81 close to the cavity.

[0085] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A welding positioning tool, characterized in that: The invention comprises a positioning component with an air passage, wherein the air passage is used to connect to the air storage device, and the positioning component comprises: A first positioning portion (11); a second positioning portion (21), wherein the first positioning portion (11) and the second positioning portion (21) are spaced apart from each other to form a first positioning space, wherein the first positioning space is used to position a first portion of a workpiece (80) to be welded; A first blowing end (13), connected to the first positioning portion (11) and penetrated by the air passage; A second blowing end (22), connected to the second positioning portion (21) and penetrated by the air passage; The first blowing end (13) and the second blowing end (22) are used to blow the protective gas of the gas storage device to the workpiece (80) to be welded.

2. The welding positioning tool according to claim 1, characterized in that: The positioning component also includes: A third positioning portion (12); a fourth positioning portion (31), the third positioning portion (12) and the fourth positioning portion (31) being spaced apart from each other to form a second positioning space, the second positioning space being used to position a second portion of the welded workpiece (80); The third blowing end (32) is connected to the fourth positioning portion (31) and is penetrated by the air passage, and is used for blowing the protective gas of the gas storage device to the workpiece (80) to be welded.

3. The welding positioning tool according to claim 2, characterized in that: The first positioning portion (11) and the third positioning portion (12) are arranged on different planes, and the first blowing end (13) is formed on a first edge (132) between the first positioning portion (11) and the third positioning portion (12).

4. The welding positioning tool according to claim 3, characterized in that: The first edge (132) includes a first chamfer (1321) for forming the first blowing end (13); and / or, The positioning assembly further comprises a first end portion (24) disposed at an eccentric surface with the second positioning portion (21), the first end portion (24) not protruding from the third positioning portion (12), and the second blowing end (22) is formed at an edge between the first end portion (24) and the second positioning portion (21); and / or, The positioning assembly further comprises a second end portion (34) which is arranged at an eccentric surface with the fourth positioning portion (31), the second end portion (34) does not protrude from the first positioning portion (11), and the third blowing end (32) is formed at an edge between the second end portion (34) and the fourth positioning portion (31).

5. The welding positioning tool according to claim 2, characterized in that: The first positioning portion (11) and the third positioning portion (12) are integrally connected; and / or the first positioning portion (11) and the second positioning portion (21) are separately arranged; and / or the third positioning portion (12) and the fourth positioning portion (31) are separately arranged.

6. The welding positioning tool according to claim 2, characterized in that: The positioning assembly is configured with a second edge (222) connected to the second positioning portion (21), and the second edge (222) includes a second chamfer (2221) for forming the second blowing end (22); and / or, The positioning assembly is configured with a third edge (322) connected to the fourth positioning portion (31), and the third edge (322) includes a third chamfer (3221) for forming the third blowing end (32).

7. The welding positioning tool according to claim 1, characterized in that: The positioning assembly is configured with a first edge (132) connected to the first positioning portion (11) and forming the first blowing end (13), and the first edge (132) is provided with a plurality of first blowing ports (131) connected to the air passage; and / or, The positioning assembly is configured with a second edge (222) connected to the second positioning portion (21) and used to form the second blowing end (22); the second edge (222) is provided with a plurality of second blowing ports (221) connected to the air channel.

8. The welding positioning tool according to claim 1, characterized in that: The positioning assembly comprises a first puzzle piece (101) and a second puzzle piece (102) which are spliced ​​and fixed, the first positioning portion (11) is formed on at least one of the first puzzle piece (101) and the second puzzle piece (102), and a first inner concave cavity (141) is provided on a side of the first puzzle piece (101) close to the second puzzle piece (102) to form part of the airway; and / or, The positioning assembly comprises a third puzzle piece (201) and a fourth puzzle piece (202) which are spliced ​​and fixed, the second positioning portion (21) is formed on at least one of the third puzzle piece (201) and the fourth puzzle piece (202), and a second inner concave cavity (231) is provided on a side of the third puzzle piece (201) close to the fourth puzzle piece (202) to form part of the airway.

9. The welding positioning tool according to claim 8, characterized in that: The positioning assembly comprises a first puzzle block (101), a second puzzle block (102), a third puzzle block (201) and a fourth puzzle block (202). The first positioning portion (11) is formed on at least one of the first block (101) and the second block (102); a portion of the air passage is opened on a side of the first block (101) close to the second block (102), and the first block (101) is sealed and bonded to the second block (102); The second positioning portion (21) is formed on at least one of the third block (201) and the fourth block (202); a portion of the air passage is opened on a side of the third block (201) close to the fourth block (202), and the third block (201) is sealed and bonded to the fourth block (202).

10. The welding positioning tool according to claim 1, characterized in that: It also includes a first driving mechanism (50), a positioning platform (40) and a workpiece lifting portion (52), wherein the workpiece lifting portion (52) and the positioning platform (40) are arranged opposite to each other and can be connected to a power output end of the first driving mechanism (50), and the first driving mechanism (50) is used to drive the workpiece lifting portion (52) to approach the positioning platform (40); and / or, It also includes a second driving mechanism (60) connected to the first positioning portion (11) and / or the second positioning portion (21); the first positioning portion (11) and the second positioning portion (21) are arranged separately; and the second driving mechanism (60) is used to drive the first positioning portion (11) and the second positioning portion (21) to move closer to each other.

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