Positioning jig and welding device

Abstract

The utility model provides a positioning jig and a welding device, which are used for improving the positioning accuracy of a first workpiece and a second workpiece, and the positioning jig comprises a bearing seat, a positioning block, a first positioning block and a second positioning block, the upper surface of the bearing seat is provided with a limiting area, and the bottom wall of the limiting area is provided with a placing hole; the positioning mechanism comprises an installation base, a first positioning assembly and a second positioning assembly, the installation base is contained in the containing hole, the installation base and one side wall of the containing hole define a part installation hole used for installing a first workpiece, the installation base is provided with two communicating movable grooves, and the first workpiece extends to the movable grooves; the first positioning assembly and the second positioning assembly are contained in the two movable grooves and rotationally connected with the mounting base correspondingly, the first positioning assembly and the second positioning assembly are used for movably pushing the first workpiece to the side wall of the part mounting hole in the first direction and the second direction correspondingly, and the second direction is perpendicular to the first direction; and the limiting mechanism is arranged on the bearing seat, surrounds the limiting area and is used for clamping the second workpiece when the second workpiece is placed on the first workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning processing, and particularly relates to a positioning fixture and a welding device. Background Art

[0002] When fixing a small part to a workpiece, generally, the small part is first placed on the positioning groove of the fixture, then the workpiece is covered on the small part, and finally the small part and the workpiece are fixed by processing methods such as welding. However, in order to ensure that the small part can be quickly placed in the positioning groove, the size of the positioning groove is generally set to be larger than that of the small part, which causes the small part to move horizontally relative to the fixture after being placed in the positioning groove, resulting in low positioning accuracy of the small part and the workpiece, and poor fixing quality of the small part and the workpiece. Summary of the Utility Model

[0003] In view of the above, it is necessary to provide a positioning fixture and a welding device to improve the positioning accuracy of the first workpiece and the second workpiece.

[0004] An embodiment of the utility model provides a positioning fixture, including:

[0005] A bearing seat, the upper surface of the bearing seat has a limiting area, and a placing hole is opened on the bottom wall of the limiting area;

[0006] A positioning mechanism, including a mounting seat, a first positioning component and a second positioning component. The mounting seat is accommodated in the placing hole and encloses with a side wall of the placing hole to form a part mounting hole for mounting a first workpiece. The mounting seat is provided with two communicating movable grooves. The first workpiece extends into the movable grooves. The first positioning component and the second positioning component are accommodated in the two movable grooves and are respectively rotatably connected to the mounting seat. The first positioning component and the second positioning component are used to respectively push the first workpiece along a first direction and a second direction to the side wall of the part mounting hole, and the second direction is perpendicular to the first direction;

[0007] A limiting mechanism, which is arranged on the bearing seat and surrounds the limiting area, and is used to clamp the second workpiece when the second workpiece is placed on the first workpiece.

[0008] In some embodiments, the bearing seat includes:

[0009] A cover plate, the limiting area is formed on the cover plate, and the placing hole is opened on the cover plate;

[0010] A bearing plate, which is provided with a bearing hole communicating with the placing hole;

[0011] The disassembly and assembly piece is covered on the bearing hole and detachably connected to the bearing plate. A processing hole communicating with the bearing hole is formed in the disassembly and assembly piece, so that a laser sequentially passes through the processing hole, the bearing hole, and the part mounting hole to weld the first workpiece to the second workpiece.

[0012] In some embodiments, the first workpiece includes a vertical portion and a horizontal portion connected to each other. One side wall of the placement hole has a first recess for accommodating the vertical portion of the first workpiece. The mounting seat includes a boss and a base. The boss is inserted into the placement hole. A side opening and a second recess communicating with the side opening are formed in the side wall of the boss. The second recess is used for accommodating the horizontal portion of the first workpiece and is docked with the first recess to form the part mounting hole. The base is disposed in the bearing hole. The inner surface of the base is connected to the disassembly and assembly piece through a connecting column. A part of the outer surface of the base abuts against the inner surface of the cover plate, and the other part receives the boss. The movable groove extends from the inner surface of the base towards the boss. A clamping groove is formed in the side wall of each movable groove.

[0013] In some embodiments, the positioning mechanism further includes:

[0014] A bearing piece, detachably connected to the base and covering the two clamping grooves;

[0015] Two connecting rods are respectively inserted through the first positioning component and the second positioning component, and each connecting rod is clamped in one of the clamping grooves.

[0016] In some embodiments, both the first positioning component and the second positioning component include:

[0017] A rotating member is accommodated in the movable groove, and the connecting member movably passes through the rotating member;

[0018] An elastic member is accommodated in the movable groove, and one end of the elastic member elastically abuts against the base, and the other end of the elastic member elastically abuts against the rotating member; wherein,

[0019] The elastic force directions of the two elastic members are respectively arranged along the first direction and the second direction.

[0020] In some embodiments, the boss is provided with two stop holes respectively communicating with the movable grooves. Each rotating member includes:

[0021] A rotating body is received in the movable groove and abuts against the corresponding elastic member. One end of the rotating body is movably sleeved on the corresponding connecting rod;

[0022] A stop protrusion protrudes from one end surface of the rotating body and is movably disposed in the stop hole;

[0023] The abutting body is connected to the side of the rotating body facing away from the elastic member, and is used to abut the vertical portion of the first workpiece against the side wall of the part mounting hole;

[0024] The force-receiving protrusion is spaced apart from the abutting body and connected to the side of the rotating body facing away from the elastic member, and is used to drive the rotating body to rotate when an external force is applied, so that the elastic member is elastically compressed, and the abutting body is moved away from the part mounting hole, so as to install the vertical portion of the first workpiece into the part mounting hole. When the external force on the force-receiving protrusion is cancelled, the elastic member resets to drive the abutting body to push the vertical portion of the first workpiece against the side wall of the part mounting hole.

[0025] In some embodiments, the limiting mechanism includes:

[0026] The first stop member is arranged on the carrier plate and passes through the cover plate;

[0027] The second stop member is arranged on the carrier plate and passes through the cover plate;

[0028] The first limiting member includes a first limiting body and a first buffer body. The first limiting body is slidably arranged on the carrier plate along the first direction and passes through the cover plate. Two ends of the first buffer body are elastically abutted against the first limiting body and the cover plate respectively. The first limiting body and the first stop member are arranged at intervals along the first direction to elastically clamp the second workpiece between the first limiting body and the first stop member along the first direction;

[0029] The second limiting member includes a second limiting body and a second buffer body. The second limiting body is slidably arranged on the carrier plate along the second direction and passes through the cover plate. Two ends of the second buffer body are elastically abutted against the second limiting body and the cover plate respectively. The second limiting body and the second stop member are arranged at intervals along the second direction to elastically clamp the second workpiece between the second limiting body and the second stop member along the second direction;

[0030] The pressing plate covers the second workpiece to press the second workpiece against the first workpiece.

[0031] In some embodiments, the inner surface of the cover plate facing the carrier plate is provided with a first limiting groove and a second limiting groove. The bottom wall of the first limiting groove is provided with a first moving hole, and the bottom wall of the second limiting groove is provided with a second moving hole. The first limiting body includes a first sliding part and a first limiting part. The first sliding part and the first buffer body are both accommodated in the first limiting groove. The first limiting part is connected to the first sliding part and passes through the first moving hole. The first limiting part is movably arranged in the first moving hole along the first direction and is used for abutting against the second workpiece to the first stop member along the first direction. The second limiting body includes a second sliding part and a second limiting part. The second sliding part and the second buffer body are both accommodated in the second limiting groove. The second limiting part is connected to the second sliding part and passes through the second moving hole. The second limiting part is movably arranged in the second moving hole along the second direction and is used for abutting against the second workpiece to the second stop member along the second direction.

[0032] In some embodiments, the positioning mechanism further includes:

[0033] A reset member, and two ends of the reset member are elastically abutted against the carrier seat and the mounting seat respectively.

[0034] An embodiment of the present invention further provides a welding device, including:

[0035] The above-mentioned positioning fixture;

[0036] A welding mechanism, configured to emit laser light so that the laser light passes through the carrier seat to weld the first workpiece to the second workpiece.

[0037] In the above-mentioned positioning fixture and welding device, the first workpiece is abutted against the side wall of the part mounting hole in the first direction and the second direction respectively by the first positioning component and the second positioning component, so that the position of the first workpiece relative to the limiting area for placing the second workpiece is fixed, thereby improving the positioning accuracy of the first workpiece and the second workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is an assembly schematic diagram of the first workpiece and the second workpiece applicable to the positioning fixture of the embodiment of the present invention.

[0039] Figure 2 It is a structural schematic diagram of the positioning fixture of the embodiment of the present invention.

[0040] Figure 3 For Figure 2 The structural schematic diagram of the carrier seat and the limiting mechanism in the shown positioning fixture.

[0041] Figure 4 For Figure 2Schematic diagram of the structure of the positioning mechanism in the shown positioning jig.

[0042] Figure 5 For Figure 2 Enlarged schematic diagram of the shown positioning jig at A.

[0043] Figure 6 For Figure 3 Exploded schematic diagram of the shown carrier base and the limiting mechanism.

[0044] Figure 7 For Figure 4 Exploded schematic diagram of the shown positioning mechanism.

[0045] Figure 8 For Figure 7 Schematic diagram of another view of the base and the force - receiving protrusion in the shown positioning mechanism.

[0046] Figure 9 For Figure 6 Schematic diagram of another view of the cover member in the shown bearing mechanism.

[0047] Explanation of main component symbols

[0048] Positioning jig 100

[0049] Part mounting hole 100a

[0050] Carrier base 110

[0051] Limiting area 110a

[0052] Placement hole 110b

[0053] First recess 110c

[0054] Cover plate 111

[0055] First limiting groove 111a

[0056] Second limiting groove 111b

[0057] First movable hole 111c

[0058] Second movable hole 111d

[0059] Carrier plate 112

[0060] Carrier hole 112a

[0061] Disassembly and assembly piece 113

[0062] Processing hole 113a

[0063] Positioning mechanism 120

[0064] Mounting base 121

[0065] Movable slot 121a

[0066] Boss 1211

[0067] Second recess 1211a

[0068] Stop hole 1211b

[0069] Side opening 1211c

[0070] Base 1212

[0071] Card slot 1212a

[0072] Movable through hole 1212b

[0073] Connection hole 1212c

[0074] First positioning component 122

[0075] Rotating part 1221

[0076] Rotating body 1221a

[0077] Stop projection 1221b

[0078] Abutting body 1221c

[0079] Force-receiving projection 1221d

[0080] Receiving groove 1221e

[0081] Elastic member 1222

[0082] Second positioning component 123

[0083] Reset member 124

[0084] Carrying piece 125

[0085] Connecting rod 126

[0086] Limit mechanism 130

[0087] First stop member 131

[0088] Second stop member 132

[0089] First limiting member 133

[0090] First limiting body 1331

[0091] First sliding part 1331a

[0092] First limiting part 1331b

[0093] The first buffer 1332

[0094] The second limiting member 134

[0095] The second limiting body 1341

[0096] The second sliding part 1341a

[0097] The second limiting part 1341b

[0098] The second buffer 1342

[0099] The first workpiece 200

[0100] The vertical part 210

[0101] The horizontal part 220

[0102] The second workpiece 300 Specific embodiments

[0103] The following is a detailed description of the embodiments of the present invention. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0104] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances.

[0105] The following will describe each embodiment of this case in detail with reference to the drawings.

[0106] Please refer to Figure 1 , Figure 1The figure is an assembly schematic diagram of a first workpiece and a second workpiece applicable to the positioning fixture of the embodiment of the present utility model. Specifically, the first workpiece 200 is a metal part with a sheet-like structure and is generally L-shaped. Specifically, the first workpiece 200 includes a vertical portion 210 and a horizontal portion 220 that are connected to each other. The first workpiece 200 needs to be welded and fixed to the second workpiece 300 through a welding device (to be described below). The second workpiece 300 has a plate-like or frame-like structure. Among them, there can be multiple first workpieces 200, and the multiple first workpieces 200 are arranged at intervals along the periphery of the second workpiece 300. The second workpiece 300 can be a metal frame of an electronic device such as a watch or a mobile phone, or a display screen with a metal frame.

[0107] Please refer to Figure 2 , the embodiment of the present utility model provides a positioning fixture 100, which includes a carrier seat 110, a positioning mechanism 120 and a limiting mechanism 130, and is used to position the first workpiece 200 and the second workpiece 300 so that the relative positions of the first workpiece 200 and the second workpiece 300 are fixed, facilitating the welding device to weld the first workpiece 200 to the second workpiece 300. Among them, there can be multiple positioning mechanisms 120, and the multiple positioning mechanisms 120 correspond to the multiple first workpieces 200 one by one, so that the positioning fixture 100 can simultaneously position the multiple first workpieces 200 onto the second workpiece 300.

[0108] For the convenience of description, a three-dimensional coordinate system is added to some of the drawings. Specifically, the X-axis direction is the first direction, the Y-axis direction is the second direction, and the Z-axis direction is the third direction. Among them, the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0109] Please refer to Figure 2 and Figure 3 , the outer surface of the carrier seat 110 has a limiting area 110a, and a placement hole 110b is opened on the bottom wall of the limiting area 110a. Among them, there are multiple placement holes 110b, and the multiple placement holes 110b correspond to the multiple positioning mechanisms 120 one by one. Here, a single positioning mechanism 120 and a single placement hole 110b are taken as examples for subsequent description.

[0110] Please refer to Figure 4 and Figure 5, the positioning mechanism 120 includes a mounting base 121, a first positioning component 122 and a second positioning component 123. The mounting base 121 is received in the placement hole 110b and encloses with a side wall of the placement hole 110b to form a part mounting hole 100a for mounting the first workpiece 200. The mounting base 121 is provided with two communicating movable slots 121a. The first workpiece 200 is inserted into the part mounting hole 100a and extends into the movable slots 121a. The first positioning component 122 and the second positioning component 123 are received in the two movable slots 121a and are respectively rotatably connected to the mounting base 121. The first positioning component 122 and the second positioning component 123 are used to respectively push the first workpiece 200 along the X-axis direction and the Y-axis direction against the side wall of the part mounting hole 100a, so that when the second workpiece 300 is placed in the limiting area 110a, it covers the first workpiece 200. Specifically, the first positioning component 122 abuts against one side surface of the vertical portion 210 along the X-axis direction so that the other side surface of the vertical portion 210 is pushed against a side wall of the part mounting hole 100a in the X-axis direction, and the second positioning component 123 abuts against the front surface of the vertical portion 210 along the Y-axis direction. The limiting mechanism 130 is arranged on the bearing seat 110 and is arranged around the limiting area 110a, and is used to clamp the second workpiece 300 when the second workpiece 300 is placed on the first workpiece 200 and press the second workpiece 300 against the first workpiece 200.

[0111] Please refer to Figure 3 and Figure 6 , in some embodiments, the bearing seat 110 includes a cover plate 111, a bearing plate 112 and a disassembly and assembly piece 113. The limiting area 110a is formed on the cover plate 111, the placement hole 110b is opened on the cover plate 111, the bearing plate 112 is provided with a bearing hole 112a communicating with the placement hole 110b, the disassembly and assembly piece 113 covers the bearing hole 112a and is detachably connected to the bearing plate 112, and the disassembly and assembly piece 113 is provided with a processing hole 113a communicating with the bearing hole 112a. Wherein, one end of the mounting base 121 is connected to the disassembly and assembly piece 113 through a connecting column 114, the other end of the mounting base 121 extends into the bearing hole 112a and the placement hole 110b in sequence, and the laser of the welding device sequentially passes through the processing hole 113a, the bearing hole 112a, and the part mounting hole 100a to weld the horizontal portion 220 of the first workpiece 200 to the second workpiece 300.

[0112] Through the above settings, the bearing seat 110 can be easily disassembled and assembled, which is beneficial to the rapid installation of the positioning mechanism 120 and the limiting mechanism 130 on the bearing seat 110.

[0113] In one embodiment, the laser light source of the welding device is located above the positioning jig 100. When the first workpiece 200 needs to be welded to the second workpiece 300, the positioning jig 100 is flipped after the limiting mechanism 130 clamps and presses the second workpiece 300, so that the laser light source of the welding device emits laser light from top to bottom, causing the laser light to sequentially pass through the processing hole 113a, the bearing hole 112a, and the component mounting hole 100a to weld the first workpiece 200 to the second workpiece 300. In another embodiment, the laser light source of the welding device is located below the positioning jig 100. After the limiting mechanism 130 clamps and presses the second workpiece 300, there is no need to flip the positioning jig 100. The laser light source of the welding device emits laser light from bottom to top, causing the laser light to sequentially pass through the processing hole 113a, the bearing hole 112a, and the component mounting hole 100a to weld the first workpiece 200 to the second workpiece 300.

[0114] See Figure 5 、 Figure 7 and Figure 8 In some embodiments, a side wall of the placement hole 110b has a first recess 110c for accommodating the vertical portion 210 of the first workpiece 200. The mounting seat 121 includes a boss 1211 and a base 1212. The boss 1211 is inserted into the placement hole 110b. The side wall of the boss 1211 has a second recess 1211a and a side opening 1211c connected to the second recess 1211a. The second recess 1211a is used to accommodate the horizontal portion 220 of the first workpiece 200 and mates with the first recess 110c to form the component mounting hole 100a. The base 1212 is disposed within the bearing hole 112a. The inner surface of the base 1212 is connected to the disassembly plate 113 via a connecting post 114. A portion of the outer surface of the base 1212 abuts the inner surface of the cover plate 111, while the other portion receives the boss 1211. The movable groove 121a extends from the inner surface of the base 1212 toward the boss 1211. Each sidewall of the movable groove 121a is provided with a latching slot 1212a. Specifically, each latching slot 1212a is located on opposite side walls of the movable groove 121a. The base 1212 also defines a movable through-hole 1212b that communicates with the side opening 1211c. The base 1212 has a connecting hole 1212c. One end of the connecting post 114 is connected to the disassembly plate 113, and the other end of the connecting post 114 is inserted into the movable through-hole 1212b. The boss 1211 and the base 1212 can be integrally formed or separately provided.

[0115] In some embodiments, the positioning mechanism 120 further includes a receiving plate 125 and two connecting rods 126. The receiving plate 125 is detachably connected to the base 1212 and covers the two slots 1212a. The two connecting rods 126 are respectively provided through the first positioning assembly 122 and the second positioning assembly 123, and each connecting rod 126 is fixed to one of the slots 1212a.

[0116] Therefore, through the above configuration, the installation difficulty of the positioning mechanism 120 can be reduced, which is conducive to improving the installation efficiency of the positioning mechanism 120.

[0117] See also Figure 7 In some embodiments, the first positioning assembly 122 and the second positioning assembly 123 each include a rotating member 1221 and an elastic member 1222. The rotating member 1221 is accommodated in the movable groove 121a, and the connecting rod 1214 is movably disposed through the rotating member 1221. The elastic member 1222 is accommodated in the movable groove 121a, with one end of the elastic member 1222 elastically abutting against the base 1212, and the other end of the elastic member 1222 elastically abutting against the rotating member 1221. The elastic forces of the two elastic members 1222 are respectively arranged along the X-axis and the Y-axis. In this embodiment, the elastic member 1222 is a spring.

[0118] In some embodiments, the boss 1211 defines two stop holes 1211b that are respectively connected to the movable groove 121a. Each rotating member 1221 includes a rotating body 1221a, a stop protrusion 1221b, and a supporting body 1221c. The rotating body 1221a is received in the movable groove 121a and is supported by the corresponding elastic member 1222. One end of the rotating body 1221a is movably mounted on the corresponding connecting rod 1214. The stop protrusion 1221b is connected to one end surface of the rotating body 1221a and extends to the corresponding stop hole 1211b. The stop protrusion 1221b is movably disposed in the stop hole 1211b. The supporting body 1221c is connected to the side of the rotating body 1221a facing away from the elastic member 1222 and is used to support the first workpiece 200 to the side wall of the component mounting hole 100a.

[0119] Therefore, the two stopping holes 1211 b can limit the movement range of the stopping protrusion 1221 b, thereby limiting the rotation member 1221.

[0120] See also Figure 7 In some embodiments, each rotating member 1221 further includes a force-bearing protrusion 1221d, and the force-bearing protrusion 1221d and the supporting body 1221c are spaced apart and connected to the side of the rotating body 1221a away from the elastic member 1222 along the Z-axis direction.

[0121] Among them, when the force-receiving protrusion 1221d is subjected to an external force, it drives the rotating body 1221a to rotate, so that the elastic member 1222 is elastically compressed, and the abutting body 1221c is moved away from the part mounting hole 100a, so as to install the vertical portion 210 of the first workpiece 200 into the part mounting hole 100a. When the external force on the force-receiving protrusion 1221d is cancelled, the elastic member 1222 resets, so as to drive the abutting body 1221c to push the vertical portion 210 of the first workpiece 200 against the side wall of the part mounting hole 100a. Specifically, the part mounting hole 100a includes a first side wall, a second side wall, a third side wall, and a fourth side wall that are sequentially vertically connected to form a square through hole. When the force-receiving protrusion 1221d in the first positioning assembly 122 and the second positioning assembly 123 is pushed by an external force, the rotating body 1221a of the first positioning assembly 122 rotates to drive the abutting body 1221c to open in the X-axis direction, and the rotating body 1221a of the second positioning assembly 123 rotates to drive the abutting body 1221c to open in the Y-axis direction, so as to install the first workpiece 200. After the first workpiece 200 is installed and the external force pushing is cancelled, the elastic member 1222 of the first positioning assembly 122 elastically resets, so that the abutting body 1221c of the first positioning assembly 122 pushes the vertical portion 210 of the first workpiece 200 against the fourth side wall of the part mounting hole 100a in the X-axis direction, and the elastic member 1222 of the second positioning assembly 123 elastically resets, so that the abutting body 1221c of the second positioning assembly 123 pushes the vertical portion 210 of the first workpiece 200 against the first side wall of the part mounting hole 100a in the X-axis direction.

[0122] Therefore, the force-receiving protrusion 1221d arranged as above serves as the force-receiving point of the external acting force, and can reduce the difficulty of applying force to the rotating member 1221.

[0123] In this embodiment, a receiving groove 1221e is formed on the side of the rotating body 1221a facing the elastic member 1222, and a part of the elastic member 1222 is accommodated in the receiving groove 1221e.

[0124] Therefore, the receiving groove 1221e can limit the radial direction of the elastic member 1222, thereby improving the stability of the elastic force generated by the elastic member 1222.

[0125] Please refer to Figure 3 and Figure 6, in some embodiments, the limiting mechanism 130 includes a first stopper 131, a second stopper 132, a first limiting member 133 and a second limiting member 134. The first stopper 131 is disposed on the carrier plate 112 and passes through and protrudes from the cover plate 111 in the Z-axis direction. The second stopper 132 is disposed on the carrier plate 112 and passes through and protrudes from the cover plate 111 in the Z-axis direction. The first limiting member 133 includes a first limiting body 1331 and a first buffer body 1332. The first limiting body 1331 is slidably disposed on the carrier plate 112 in the X-axis direction and passes through and protrudes from the cover plate 111 in the Z-axis direction. The two ends of the first buffer body 1332 are elastically abutted against the first limiting body 1331 and the cover plate 111 respectively. The first limiting body 1331 and the first stopper 131 are spaced apart in the X-axis direction to elastically clamp the second workpiece 300 between the first limiting body 1331 and the first stopper 131 in the X-axis direction. The second limiting member 134 includes a second limiting body 1341 and a second buffer body 1342. The second limiting body 1341 is slidably disposed on the carrier plate 112 in the Y-axis direction and passes through and protrudes from the cover plate 111 in the Z-axis direction. The two ends of the second buffer body 1342 are elastically abutted against the second limiting body 1341 and the cover plate 111 respectively. The second limiting body 1341 and the second stopper 132 are spaced apart in the Y-axis direction to elastically clamp the second workpiece 300 between the second limiting body 1341 and the second stopper 132 in the Y-axis direction.

[0126] The above-mentioned first buffer body 1332 can elastically abut against the first limiting body 1331 in the X-axis direction, so that the first limiting body 1331 can displace relative to the first stopper 131 in the X-axis direction. The second buffer body 1342 can elastically push the second limiting body 1341 in the Y-axis direction, so that the second limiting body 1341 can displace relative to the second stopper 132 in the Y-axis direction, thereby changing the size of the limiting area 110a, so that the limiting mechanism 130 can limit second workpieces 300 of various sizes.

[0127] In this embodiment, both the first buffer body 1123b and the second buffer body 1124b can be springs. Wherein, there can be at least two first stoppers 131, and the at least two first stoppers 131 are spaced apart in the Y-axis direction, which can improve the stability of the limiting mechanism 130 to stop the second workpiece 300 in the X-axis direction. The second stopper 132 can be at least two, and the at least two second stoppers 132 are arranged in the X-axis direction, which can improve the stability of the limiting mechanism 130 to stop the second workpiece 300 in the Y-axis direction.

[0128] In this embodiment, the cover plate 111 is detachably connected to the carrier plate 112, and the cover plate 111 is sleeved on the first stopper 131 and the second stopper 132, so that the first stopper 131 and the second stopper 132 are fixedly arranged relative to the cover plate 111.

[0129] In some embodiments, the ends of the first limiting body 1331 and the ends of the second limiting body 1341 both have rotating buckles. The rotating buckles rotate towards the limiting area 110a to buckle the second workpiece 300 to the first workpiece 200; the rotating buckles rotate away from the limiting area 110a to facilitate the removal of the welded second workpiece 300 or to facilitate the installation of the second workpiece 300.

[0130] In another embodiment, the limiting mechanism 130 further includes a pressing plate which covers the second workpiece 300 to press the second workpiece 300 against the first workpiece 200, thereby improving the stability of the relative positions of the first workpiece 200 and the second workpiece 300.

[0131] Please refer to Figure 6 and Figure 9 , in some embodiments, the inner surface of the cover plate 111 facing the carrier plate 112 is provided with a first limiting groove 111a and a second limiting groove 111b. The bottom wall of the first limiting groove 111a is provided with a first movable hole 111c, and the bottom wall of the second limiting groove 111b is provided with a second movable hole 111d. The first limiting body 1331 includes a first sliding portion 1331a and a first limiting portion 1331b. The first sliding portion 1331a and the first buffer body 1332 are both accommodated in the first limiting groove 111a. The first limiting portion 1331b is connected to the first sliding portion 1331a and passes through the first movable hole 111c along the Z-axis direction. The first limiting portion 1331b is movably disposed in the first movable hole 111c along the X-axis direction and is used to abut the second workpiece 300 against the first stopper 131 along the X-axis direction. The second limiting body 1341 includes a second sliding portion 1341a and a second limiting portion 1341b. The second sliding portion 1341a and the second buffer body 1342 are both accommodated in the second limiting groove 111b. The second limiting portion 1341b is connected to the second sliding portion 1341a and passes through the second movable hole 111d along the Z-axis direction. The second limiting portion 1341b is movably disposed in the second movable hole 111d along the Y-axis direction and is used to abut the second workpiece 300 against the second stopper 132 along the Y-axis direction.

[0132] In this embodiment, one end of the first buffer body 1332 abuts against the first sliding portion 1331a, and one end of the second buffer body 1342 abuts against the second sliding portion 1341a.

[0133] In the above arrangement, the first limiting groove 111a can form a limit on the first sliding portion 1331a in the X-axis direction, the first movable hole 111c can form a limit on the first limiting portion 1331b in the X-axis direction, the second limiting groove 111b can form a limit on the second sliding portion 1341a in the Y-axis direction, and the second movable hole 111d can form a limit on the second limiting portion 1341b in the Y-axis direction, which is beneficial to improving the movement stability of the first limiting body 1331 and the second limiting body 1341.

[0134] In some embodiments, the positioning mechanism 120 further includes a reset member 124. The elastic force of the reset member 124 is arranged along the Z-axis direction, and both ends of the reset member 124 are elastically abutted against the bearing seat 110 and the mounting seat 121 respectively.

[0135] In this embodiment, the elastic force of the reset member 124 is arranged along the Z-axis direction. Among them, the reset member 124 can be a spring and the number thereof can be two or more.

[0136] Therefore, the reset member 124 can elastically support the mounting seat 121 on the Z-axis, so that the mounting seat 121 forms a buffer adjustment for the first workpiece 200 in the Z-axis direction, which is beneficial to reducing the damage caused by the collision between the second workpiece 300 and the first workpiece 200.

[0137] An embodiment of the present invention further provides a welding device (not shown), including a welding mechanism and the positioning jig 100 of the above embodiment. The welding mechanism is used to emit laser light so that the laser passes through the bearing seat 110 to weld the first workpiece 200 to the second workpiece 300.

[0138] The working process of the above welding device is generally as follows:

[0139] First, force is applied to the force-receiving protrusions 1221d of the two rotating members 1221, so that the rotating bodies 1221a of the two rotating members 1221 compress the two elastic members 1222 and make the two abutting bodies 1221c open and move away from the side walls corresponding to the part mounting holes 100a respectively;

[0140] Then, the vertical portion 210 of the first workpiece 200 is placed in the first recess 110c of the part mounting hole 100a and the vertical portion 210 of the first workpiece 200 extends into the movable groove 121a, and the horizontal portion 220 of the first workpiece 200 is arranged in the second recess 1211a of the part mounting hole 100a;

[0141] Subsequently, the force on the force-receiving protrusions 1221d of the two rotating members 1221 is cancelled, and the elastic forces of the two elastic members 1222 are restored to elastically push the rotating bodies 1221a of the two rotating members 1221 to rotate respectively, so that the abutting bodies 1221c of the two rotating members 1221 abut against the vertical portion 210 of the first workpiece 200 on the side walls corresponding to the part mounting hole 100a in the X-axis direction and the Y-axis direction respectively, thereby forming the positioning of the first workpiece 200;

[0142] Next, the second workpiece 300 is placed in the limiting area 110a, and the second workpiece 300 is covered on the first workpiece 200, and the limiting mechanism 130 clamps the second workpiece 300 in the X-axis direction and the Y-axis direction;

[0143] Next, press the pressing plate cover against the second workpiece 300 to press the second workpiece 300 tightly against the first workpiece 200;

[0144] Finally, flip the positioning fixture 100 so that the opening of the processing hole 113a faces upward and the second workpiece 300 faces downward. The laser emitted by the welding mechanism passes through the processing hole 113a, the bearing hole 112a, and the part mounting hole 100a in sequence, and then welds the horizontal portion 220 of the first workpiece 200 to the second workpiece 300.

[0145] In the above positioning fixture 100 and welding device, the first positioning component 122 and the second positioning component 123 respectively abut against the side wall of the first workpiece 200 to the part mounting hole 100a in the X-axis direction and the Y-axis direction, so that the position of the first workpiece 200 relative to the limiting area 110a for placing the second workpiece 300 is fixed, thereby improving the positioning accuracy of the first workpiece 200 and the second workpiece 300.

[0146] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A positioning jig, characterized in that, include: A bearing seat, wherein the upper surface of the bearing seat has a limiting area, and the bottom wall of the limiting area is provided with a placement hole; The positioning mechanism includes a mounting seat, a first positioning assembly and a second positioning assembly, wherein the mounting seat is accommodated in the placement hole and encloses a side wall of the placement hole to form a part mounting hole for mounting a first workpiece, the mounting seat is provided with two communicating movable grooves, the first workpiece extends into the movable grooves, the first positioning assembly and the second positioning assembly are accommodated in the two movable grooves and are respectively rotatably connected to the mounting seat, the first positioning assembly and the second positioning assembly are used to movably push the first workpiece to the side wall of the part mounting hole along a first direction and a second direction, respectively, the second direction being perpendicular to the first direction; A limiting mechanism is provided on the bearing seat and arranged around the limiting area, and is used for clamping the second workpiece when the second workpiece is placed on the first workpiece.

2. The positioning fixture according to claim 1, wherein, The bearing seat includes: a cover plate, wherein the limiting area is formed on the cover plate, and the placement hole is opened on the cover plate; A bearing plate is provided with a bearing hole communicating with the placement hole; A disassembly and assembly piece is provided to cover the bearing hole and is detachably connected to the bearing plate. The disassembly and assembly piece is provided with a processing hole connected to the bearing hole so that the laser passes through the processing hole, the bearing hole and the part mounting hole in sequence to weld the first workpiece to the second workpiece.

3. The positioning jig according to claim 2, wherein: The first workpiece includes a vertical portion and a horizontal portion connected to each other, and a side wall of the placement hole has a first recess for accommodating the vertical portion of the first workpiece; The mounting seat includes a boss and a base, the boss is inserted into the placement hole, the side wall of the boss is provided with a side opening and a second recess connected to the side opening, the second recess is used to accommodate the horizontal part of the first workpiece, and is connected to the first recess to form the part mounting hole, the base is provided in the bearing hole, the inner surface of the base is connected to the disassembly and assembly piece through a connecting column, a part of the outer surface of the base abuts the inner surface of the cover plate, and the other part receives the boss, the movable groove extends from the inner surface of the base toward the boss, and the side wall of each movable groove is provided with a card slot.

4. The positioning fixture according to claim 3, wherein The positioning mechanism also includes: a carrier sheet, detachably connected to the base and covering the two card slots; Two connecting rods are respectively passed through the first positioning assembly and the second positioning assembly, and each connecting rod is clamped in one of the clamping slots.

5. The positioning fixture according to claim 4, characterized in that, The first positioning assembly and the second positioning assembly both include: A rotating member is accommodated in the movable groove, and the connecting rod is movably provided through the rotating member; An elastic member is accommodated in the movable groove, and one end of the elastic member elastically abuts against the base, and the other end of the elastic member elastically abuts against the rotating member; wherein, The elastic force directions of the two elastic members are respectively arranged along the first direction and the second direction.

6. The positioning fixture according to claim 5, wherein, The boss is provided with two stop holes which are respectively connected to the movable grooves, and each of the rotating parts comprises: A rotating body is received in the movable groove and abuts against the corresponding elastic member, and one end of the rotating body is movably sleeved on the corresponding connecting rod; a stop protrusion, protruding from one end surface of the rotating body and movably disposed in the stop hole; a supporting body connected to a side of the rotating body facing away from the elastic member, and used for supporting the vertical portion of the first workpiece to the side wall of the part mounting hole; The force-bearing protrusion is spaced apart from the supporting body and is connected to the side of the rotating body away from the elastic member, and is used to drive the rotating body to rotate when subjected to external force, so that the elastic member is elastically compressed and the supporting body is moved away from the part mounting hole, so as to install the vertical portion of the first workpiece to the part mounting hole. When the external force of the force-bearing protrusion is cancelled, the elastic member is reset to drive the supporting body to push the vertical portion of the first workpiece to the side wall of the part mounting hole.

7. The positioning jig according to claim 2, wherein, The limiting mechanism includes: a first stopper, provided on the carrying plate and passing through the cover plate; a second stopper, provided on the carrying plate and passing through the cover plate; a first limiting member, comprising a first limiting body and a first buffer body, wherein the first limiting body is slidably disposed on the supporting plate along the first direction and passes through the cover plate, two ends of the first buffer body elastically abut against the first limiting body and the cover plate, respectively, and the first limiting body and the first stop member are spaced apart along the first direction so as to elastically press the second workpiece between the first limiting body and the first stop member in the first direction; a second limiting member, comprising a second limiting body and a second buffer body, the second limiting body being slidably disposed on the supporting plate along the second direction and passing through the cover plate, two ends of the second buffer body elastically abutting against the second limiting body and the cover plate, respectively, the second limiting body and the second stop member being spaced apart along the second direction so as to elastically press the second workpiece between the second limiting body and the second stop member in the second direction; A pressing plate is provided on the second workpiece to press the second workpiece onto the first workpiece.

8. The positioning jig according to claim 7, wherein: The cover plate is provided with a first limiting groove and a second limiting groove on an inner surface facing the carrying plate, the bottom wall of the first limiting groove is provided with a first movable hole, and the bottom wall of the second limiting groove is provided with a second movable hole; The first limiting body includes a first sliding portion and a first limiting portion, the first sliding portion and the first buffer body are both accommodated in the first limiting groove, the first limiting portion is connected to the first sliding portion and passes through the first movable hole, the first limiting portion is movably provided in the first movable hole along the first direction, and is used to abut the second workpiece against the first stopper along the first direction; The second limiting body includes a second sliding portion and a second limiting portion. The second sliding portion and the second buffer body are both accommodated in the second limiting groove. The second limiting portion is connected to the second sliding portion and passes through the second moving hole. The second limiting portion is movably arranged in the second moving hole along the second direction and is used for abutting the second workpiece against the second stopper along the second direction.

9. The positioning fixture according to claim 1, wherein, The positioning mechanism further includes: a resetting member, with two ends of the resetting member elastically abutting against the bearing seat and the mounting seat respectively.

10. A welding device, characterized in that, including: the positioning fixture according to any one of claims 1 to 9; a welding mechanism, configured to emit laser light so that the laser light passes through the bearing seat to weld the first workpiece to the second workpiece.

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