Limiting device, welding jig and welding device

Abstract

A limiting device, a welding jig and a welding device.The limiting device comprises a fixed base and a limiting plate, the limiting plate comprises a base plate, a first plate part and a second plate part, the base plate is arranged on the fixed base in a stacked mode in the first direction, the first plate part is arranged on the base plate, and the second plate part is arranged on the base plate; the second plate part and the first plate part are at least partially arranged in a spaced mode in the second direction, and the second direction and the first direction are two directions perpendicular to each other; a limiting groove is defined by the base plate, the first plate part and the second plate part and used for fixing a workpiece. According to the technical scheme, the limiting groove is defined by the base plate, the first plate part and the second plate part to replace a spring and a pressing plate to clamp the daughter board, then the positioning precision of the daughter board in the first direction and the second direction is ensured, the perpendicularity of the daughter board and the mother board is improved, the welding quality of the daughter board and the mother board is improved, and the product yield is increased.

Description

Technical Field

[0001] The present application relates to the technical field of production tooling, and in particular to a limiting device, a welding fixture and a welding device. Background Art

[0002] Welding is a common technical means in manufacturing, which mainly refers to the use of heating or pressurization to combine two or more workpieces to form the desired product. Taking electronic products as an example, due to the limitations of function, materials and assembly space, electronic products are usually unable to form circuit boards in one piece during the production process. Instead, two or more circuit boards (PCBA) need to be combined through welding processes. In this combination process, there will be a circuit board as the main connection subject, which is called the "motherboard". Other circuit boards connected to the motherboard are called "daughterboards". This process of combining a daughterboard with a motherboard is called the "mother-daughter board" combination.

[0003] During the welding process of the mother and child boards, in order to ensure the welding quality, a limiting device is usually used to clamp the child board to ensure that the child board can always remain perpendicular to the mother board. However, in the related art, the limiting device used to clamp the child board has poor limiting ability for the child board, and the child board is easy to tilt during the welding process, affecting the welding effect of the mother and child boards. Utility Model Content

[0004] The purpose of the present application is to provide a limiting device, a welding jig and a welding device, aiming to solve the problem in the related art that the limiting device has poor limiting ability for the "sub-board" and the "sub-board" is easy to tilt during the welding process.

[0005] To achieve the purpose of the present application, in a first aspect, the present application provides a limiting device, the limiting device comprising a fixed base and a limiting plate, the limiting plate comprising:

[0006] A substrate, the substrate being stacked on the fixed base along a first direction;

[0007] A first plate portion, disposed on the substrate; and

[0008] The second plate portion is arranged on the substrate, and the second plate portion and the first plate portion are spaced apart from each other at least partially along a second direction. The second direction and the first direction are two directions perpendicular to each other. The substrate, the first plate portion and the second plate portion are surrounded to form a limiting groove, and the limiting groove is used to fix the workpiece.

[0009] In a possible implementation manner, the length of the first plate portion along the third direction is less than the length of the second plate portion along the third direction, and the third direction and the first direction and the second direction are three directions perpendicular to each other;

[0010] In a possible implementation, the limiting plate is movably disposed on the fixed base along a third direction, and the third direction and the first direction and the second direction are three directions perpendicular to each other.

[0011] The limiting groove is provided with an opening in the third direction, and the opening is used for allowing the workpiece to slide into or out of the limiting groove.

[0012] In a possible implementation manner, the cross-sectional area of ​​the opening gradually decreases along the sliding direction of the workpiece.

[0013] In a possible implementation, the limiting plate is further provided with a tool changing groove connected to the limiting groove, and the tool changing groove is provided on a side of the limiting groove away from the opening;

[0014] The length of the tool changing groove along the second direction is greater than the length of the limiting groove along the second direction.

[0015] In a possible implementation, the limiting device further includes a sliding platform, and the sliding platform is disposed on the fixed base;

[0016] The sliding platform is provided with a sliding groove, and the limiting plate is slidably arranged in the sliding groove.

[0017] In a possible implementation, a guide column is provided in the sliding groove;

[0018] The limiting plate is provided with an elongated hole penetrating along the first direction, and the elongated hole extends along a third direction, and the third direction is a direction perpendicular to the first direction and the second direction;

[0019] The elongated hole is used for the guide column to extend into.

[0020] In a possible implementation, the sliding groove is provided with a notch in the first direction;

[0021] The limiting device further comprises a baffle, which is arranged on the sliding platform and at least partially blocked in the notch.

[0022] In a possible implementation, the limiting plate has a first position and a second position in the sliding groove, when the workpiece is in the first position, the workpiece is separated from the limiting groove, and when the workpiece is in the second position, the workpiece is inserted into the limiting groove;

[0023] The sliding platform is provided with a limiting portion, and the limiting plate is provided with a matching portion, and the matching portion is used to cooperate with the limiting portion to provide limiting when the limiting plate reaches the first position and the second position.

[0024] In a possible implementation, the limiting portion includes a first magnetic block and a second magnetic block, and the first magnetic block and the second magnetic block are arranged in the sliding groove at intervals along the third direction;

[0025] The matching portion includes a third magnetic block, the third magnetic block has opposite magnetic properties to the first magnetic block, and the third magnetic block has opposite magnetic properties to the second magnetic block;

[0026] When the limit plate is in the first position, the third magnetic block is aligned with the first magnetic block, and when the limit plate is in the second position, the third magnetic block is aligned with the second magnetic block.

[0027] In a possible implementation, the limiting device further includes a bolt, and the bolt is detachably connected to the limiting plate.

[0028] In a second aspect, the present application further proposes a welding jig, the welding device comprising a limiting device, the limiting device comprising a fixed base and a limiting plate, the limiting plate comprising:

[0029] A substrate, the substrate being stacked on the fixed base along a first direction;

[0030] A first plate portion, disposed on the substrate; and

[0031] The second plate portion is arranged on the substrate, and the second plate portion and the first plate portion are spaced apart from each other at least partially along a second direction. The second direction and the first direction are two directions perpendicular to each other. The substrate, the first plate portion and the second plate portion are surrounded to form a limiting groove, and the limiting groove is used to fix the workpiece.

[0032] In a third aspect, the present application further proposes a welding device, the welding device includes a welding jig, the welding jig includes a limiting device, the limiting device includes a fixed base and a limiting plate, and the limiting plate includes:

[0033] A substrate, the substrate being stacked on the fixed base along a first direction;

[0034] A first plate portion, disposed on the substrate; and

[0035] The second plate portion is arranged on the substrate, and the second plate portion and the first plate portion are spaced apart from each other at least partially along a second direction. The second direction and the first direction are two directions perpendicular to each other. The substrate, the first plate portion and the second plate portion are surrounded to form a limiting groove, and the limiting groove is used to fix the workpiece.

[0036] The technical solution of the present application forms a limiting groove by enclosing a base plate, a first plate portion and a second plate portion, and clamps the sub-plate through the limiting groove, thereby ensuring the positioning accuracy of the sub-plate along the first direction and the second direction, improving the verticality of the sub-plate and the motherboard, improving the welding quality of the sub-plate and the motherboard, and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A schematic diagram of the structure of the limit device provided for the related technology;

[0039] Figure 2 A schematic diagram of the three-dimensional structure of an embodiment of the welding jig provided in the present application;

[0040] Figure 3 for Figure 1 A schematic diagram of the structure of the middle limit device;

[0041] Figure 4 for Figure 1 Schematic diagram of the coordination structure between the middle limit plate and the sub-plate;

[0042] Figure 5 for Figure 1 Structural diagram of the middle limit plate;

[0043] Figure 6 for Figure 3 Assembly diagram of the middle sliding platform, limit plate and baffle;

[0044] Figure 7 for Figure 6 A front view of

[0045] Figure 8 for Figure 6 Assembly diagram of the middle sliding platform and the limiting part;

[0046] Fig. 9 for Figure 6 A schematic structural diagram of an embodiment of the middle limiting portion and the matching portion;

[0047] Fig.10 for Figure 6 A schematic structural diagram of another embodiment of the middle limiting portion and the matching portion.

[0048] Description of the accompanying drawings in the related art:

[0049] 10' limit device;

[0050] 1' mounting base, 2' spring, 3' pressure plate, 4' daughter board, 5' mother board, 51' slot.

[0051] Description of the accompanying drawings in this application:

[0052] 1000 welding jig;

[0053] 100 limit device;

[0054] 1 Fixed base;

[0055] 2 limiting plate, 21 base plate, 22 first plate portion, 23 second plate portion, 24 limiting groove, 241 opening, 25 tool changing groove, 26 elongated hole, 27 third mounting hole;

[0056] 3 sliding platform, 31 sliding groove, 311 notch, 312 first mounting hole, 313 second mounting hole, 32 guide column;

[0057] 4 baffles;

[0058] 5 limiting part, 51 first magnetic block, 52 second magnetic block, 53 first limiting block, 54 second limiting block;

[0059] 6 matching portion, 61 third magnetic attraction block, 62 third limiting block;

[0060] 7 tie posts;

[0061] 200 fixed table, 210 clamping slot;

[0062] 300 motherboard, 310 slots;

[0063] 400 daughter boards. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0066] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application and in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this application includes any and all combinations of one or more of the related listed items.

[0067] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0068] Welding is a common technical means in manufacturing, which mainly refers to the use of heating or pressurization to combine two or more workpieces to form the desired product. Taking electronic products as an example, due to the limitations of function, materials and assembly space, electronic products usually need to combine two or more circuit boards (PCBA) through welding processes during the production process. In this combination process, there is usually a circuit board as the main connection subject, which is called the "motherboard". Other circuit boards connected to the motherboard are called "daughter boards". This process of combining the daughter board with the motherboard is called "mother-child board" combination. During the welding process of the mother-child board, a limit device is usually used to clamp the daughter board to ensure that the daughter board can always remain perpendicular to the motherboard, thereby ensuring the welding quality.

[0069] Please refer to Figure 1 In the related art, the limiting device 10' includes a mounting seat 1', a spring 2' and a pressure plate 3'. The mounting seat 1' is fixed on the base. One end of the spring 2' is fixedly connected to the mounting seat 1', and the other end is connected to the pressure plate 3'. In practical applications, the motherboard 5' is clamped in the clamping groove, and a slot 51' is provided on the motherboard 5'. One end of the sub-plate 4' is inserted into the slot 51' of the motherboard 5', and the other end contacts the pressure plate 3', and pushes the pressure plate 3' to move in the direction of the compression spring 2'. The spring 2' is compressed, and at the same time, the sub-plate 4' is given an extrusion force in the direction of the motherboard 5', thereby clamping the sub-plate 4' between the pressure plate 3' and the motherboard 5', and completing the positioning of the sub-plate 4' and the motherboard 5'. However, this limiting method can only realize the limiting of the sub-plate 4' in the up and down direction, but cannot provide the limiting of the sub-plate 4' in the left and right direction. During the welding process, the sub-plate 4' is easy to tilt in the left and right direction, which affects the welding effect of the sub-plate 4' and the motherboard 5'. At the same time, the high temperature and high pressure in the soldering tin furnace will also affect the service life of the spring 2', reduce the pressure of the spring 2' on the pressure plate 3', and further affect the limiting of the limiting device 10' on the sub-plate 4'.

[0070] To solve the above problems, the present application provides a welding device, which is used to weld workpieces. The workpiece welded by the welding device can be a metal part or a circuit board, and the present application does not limit this. The present application takes the circuit board as an example, and the welding device proposed in the present application includes a frame, a transport device, a welding tin furnace and a welding fixture. The frame is used as a supporting skeleton of the welding device to provide support and connection for each part or assembly of the welding device. The welding tin furnace is used to generate liquid solder waves to weld the mother and child boards. The transport device is used to transport the mother and child boards to send the daughter board and the mother board to be welded into the welding tin furnace, or to transport the welded mother and child boards out of the welding tin furnace. The welding fixture is used to fix the daughter board and the mother board, thereby ensuring that the daughter board and the mother board can be welded according to the preset position and preset angle. After the daughter board and the mother board are fixed, the welding fixture will be driven by the transport device and sent into the welding tin furnace together with the daughter board and the mother board, thereby completing the welding of the daughter board and the mother board.

[0071] Please refer to Figure 2 The welding jig 1000 includes a base (not shown in the figure), a fixing table 200 and a limiting device 100. The base serves as a supporting frame of the welding jig 1000 and is used to support and connect the welding jig 1000. The fixing table 200 is arranged on the base, and the fixing table 200 is provided with a clamping groove 210, and the clamping groove 210 is used to provide positioning for the setting of the motherboard 300 on the welding jig 1000. The limiting device 100 is arranged on the fixing table 200, and the limiting device 100 is used to provide limiting for the setting of the sub-board 400 on the motherboard 300, so as to ensure that the sub-board 400 and the motherboard 300 can be fixed on the motherboard 300 according to the preset position and preset angle.

[0072] Please refer to Figures 3 to 5 The limiting device 100 includes a fixed base 1 and a limiting plate 2, the limiting plate includes a substrate 21, a first plate portion 22 and a second plate portion 23, the substrate 21 is stacked on the fixed base 1 along the first direction, the first plate portion 22 is arranged on the substrate 21, the second plate portion 23 is arranged on the substrate 21, the second plate portion 23 and the first plate portion 22 are at least partially spaced along the second direction, and the second direction is perpendicular to the first direction; the substrate 21, the first plate portion 22 and the second plate portion 23 are surrounded to form a limiting groove 24, and the limiting groove 24 is used to fix the workpiece. The technical solution of the present application uses the substrate 21, the first plate portion 22 and the second plate portion 23 to surround and form a limiting groove 24 to replace the spring and the pressure plate to clamp the sub-plate 400, thereby ensuring the positioning accuracy of the sub-plate 400 along the first direction and the second direction, improving the verticality of the sub-plate 400 and the motherboard 300, improving the welding quality of the sub-plate 400 and the motherboard 300, and improving the product yield.

[0073] Hereinafter, the limiting device provided in the present application will be described in detail with reference to the accompanying drawings.

[0074] Please refer to Figure 3 and Figure 4 The limiting device 100 includes a fixed base 1 and a limiting plate 2. The fixed base 1 serves as a supporting frame of the limiting device 100, and is used to support and connect the various components of the limiting device 100. The limiting device 100 is fixed to the base through the fixed base 1. At the same time, the fixed base 1 also has the function of raising the limiting plate 2. By selecting a fixed base 1 of different heights, the limiting plate 2 can clamp sub-plates 400 of different heights. The material of the fixed base 1 can be metal or non-metal, and the present application does not impose any restrictions on this. In one embodiment of the present application, the material of the fixed base 1 is bakelite (a material made of phenolic plastic), so as to improve the heat resistance, corrosion resistance and anti-static properties of the fixed base 1.

[0075] The limit plate 2 is arranged on the fixed base 1. The limit plate 2 can be welded to the fixed base 1 or connected to the fixed base 1 by threads. This application does not limit this. The limit plate 2 is used to provide a limit for the setting of the sub-board 400 on the motherboard 300. In specific practice, the motherboard 300 is clamped in the clamping groove 210 of the fixed platform 200, one end of the sub-board 400 is inserted into the slot 310 of the motherboard 300, and the other end is clamped into the limit plate 2, thereby completing the limit on the motherboard 300.

[0076] Specifically, please refer to Figure 5The limiting plate 2 includes a substrate 21, a first plate portion 22 and a second plate portion 23. The substrate 21 serves as the main body of the limiting plate 2 and is used to support and connect the various parts of the limiting plate 2. The substrate 21 is stacked on the fixed base 1 along a first direction. The first plate portion 22 and the second plate portion 23 are arranged on the substrate 21. The first plate portion 22, the second plate portion 23 and the substrate 21 can be integrally formed or separately formed and then connected to each other. This application does not limit this. In one embodiment of the present application, the substrate 21, the first plate portion 22 and the second plate portion 23 are integrally formed, so as to reduce the production cost of the limiting plate 2 and improve the production efficiency of the limiting plate 2. The first plate portion 22 and the second plate portion 23 are at least partially spaced apart, and the first plate portion 22, the second plate portion 23 and the base plate 21 are arranged to form a limiting groove 24. One end of the sub-board 400 is clamped in the slot 310 of the motherboard 300, and the other end is clamped in the limiting groove 24 formed by the first plate portion 22, the second plate portion 23 and the base plate 21. The base plate 21 is used to cooperate with the motherboard 300 to provide a first direction positioning for the sub-board 400, and the first plate portion 22 and the second plate portion 23 are used to cooperate with each other to provide a second direction positioning for the sub-board 400, wherein the first direction and the second direction are two vertical directions, the first direction can be up and down, or left and right, and correspondingly, the second direction can be left and right, or up and down, and the present application does not impose any restrictions on this. For ease of description, in the embodiment of the present application, the first direction is set in the up-down direction, and the second direction is set in the left-right direction. The substrate 21 is used to cooperate with the motherboard 300 to limit the movement of the sub-board 400 in the up-down direction. The first plate portion 22 and the second plate portion 23 cooperate with each other to limit the movement of the substrate 21 in the left-right direction. In this way, the positioning accuracy of the sub-board 400 in the four directions of up-down, left-right and right is improved, the verticality of the sub-board 400 and the motherboard 300 is improved, the welding quality of the sub-board 400 and the motherboard 300 is improved, and the product yield is improved. At the same time, the structure of the limit plate 2 is stable, is less affected by the high temperature and high pressure environment in the soldering tin furnace, and has a long service life.

[0077] In order to facilitate observation of the insertion of the sub-board 400 into the limiting groove 24, in one embodiment of the present application, the length of the first plate portion 22 along the third direction is less than the length of the second plate portion 23 along the third direction. It should be noted that the third direction is perpendicular to the first direction and the second direction. The third direction can also be the front-to-back direction, the up-down direction, or the left-to-right direction. The present application does not limit this. In the present embodiment, the first direction is set to the up-down direction, the second direction is set to the left-to-right direction, and the third direction is set to the front-to-back direction. The length of the first plate portion 22 along the front-to-back direction is less than the length of the second plate portion 23 along the front-to-back direction, so that a gap connected to the limiting groove 24 is formed on the first plate portion 22. The operator can observe the plug-in condition of the sub-board 400 and the limiting groove 24 through the gap, and the plug-in condition includes the insertion depth of the sub-board 400, the position of the sub-board 400 and the limiting groove 24 (whether it is inserted vertically), etc. The operator can adjust the position of the sub-board 400 in time according to the connection between the sub-board 400 and the limit groove 24, thereby improving the positioning accuracy of the limit plate 2 for the sub-board 400, improving the verticality of the sub-board 400 and the motherboard 300, improving the welding quality of the sub-board 400 and the motherboard 300, and improving the product yield.

[0078] In order to facilitate the insertion of the sub-plate 400 into the limiting groove 24, in one embodiment of the present application, the limiting plate 2 is movably arranged on the fixed base 1 along the third direction, and the third direction is perpendicular to the first direction and the second direction. The limiting groove 24 is provided with an opening 241 in the third direction, and when the limiting plate 2 moves along the third direction, the sub-plate 400 can slide into or out of the limiting groove 24 through the opening 241. In this embodiment, the operator only needs to push the limiting plate 2 along the third direction to complete the limiting and releasing of the sub-plate 400, which reduces the difficulty of operating the limiting device 100 and improves the positioning efficiency of the limiting device 100 for the sub-plate 400.

[0079] In order to reduce the difficulty of pushing the limit plate 2, in one embodiment of the present application, the limit plate 2 is made of aluminum alloy. In this way, while ensuring the strength of the limit plate 2, the weight of the limit plate 2 is reduced, the difficulty of the operator pushing the limit plate 2 is reduced, and the positioning efficiency of the limit device 100 for the sub-plate 400 is improved.

[0080] In order to improve the efficiency of inserting the sub-plate 400 into the opening 241, in one embodiment of the present application, the cross-sectional area of ​​the opening 241 is gradually reduced along the sliding direction of the workpiece, so that a guide structure inclined toward the inside of the limit groove 24 is formed at the opening 241, thereby providing guidance for the sub-plate 400 to slide into the limit groove 24, thereby improving the stability of the sub-plate 400 sliding into the limit groove 24, and improving the positioning efficiency of the limit device 100 for the sub-plate 400.

[0081] In order to facilitate the processing of the limiting groove 24, the limiting plate 2 is further provided with a tool changing groove 25 connected to the limiting groove 24, the tool changing groove 25 is provided on the side of the limiting groove 24 away from the outlet 241, and the length of the tool changing groove 25 along the second direction is greater than the length of the limiting groove 24 along the second direction. During the processing of the limiting groove 24, when the processing tool of the machine tool moves to the side of the limiting groove 24 away from the outlet 241, the tool of the machine tool can complete the tool change from the tool changing groove 25, and complete the processing of the subsequent limiting groove 24 with the new tool, so as to improve the processing efficiency of the limiting plate 2.

[0082] Please refer to Figure 3 and Figure 6 The limiting device 100 also includes a sliding platform 3, which is arranged on the fixed base 1. The sliding platform 3 can be arranged on the fixed base 1 by welding, or can be detachably connected to the fixed base 1 by threads, and the present application does not impose any restrictions on this. The sliding platform 3 can be made of iron or steel, and the present application does not impose any restrictions on this. In one embodiment of the present application, the sliding platform 3 is made of aluminum alloy, so as to reduce the weight of the sliding platform 3 while ensuring the structural strength of the sliding platform 3. The sliding platform 3 is provided with a sliding groove 31, and the limiting plate 2 is slidably arranged in the sliding groove 31. The sliding groove 31 is used to provide guidance for the movement of the limiting plate 2 to ensure the smooth movement of the limiting plate 2.

[0083] In one embodiment of the present application, a guide post 32 is provided in the sliding groove 31, and the limiting plate 2 is provided with an elongated hole 26 penetrating along the first direction, and the elongated hole 26 extends along the third direction, and the third direction is three directions perpendicular to the first direction and the second direction. The guide post 32 extends into the elongated hole 26 and can cooperate with the elongated hole 26 to provide a limit for the movement of the limiting plate 2 in the sliding groove 31, thereby ensuring that the sub-plate 400 can slide into the limiting groove 24 at a preset angle, improving the limiting effect of the limiting device 100 on the sub-plate 400, improving the welding quality of the sub-plate 400 and the motherboard 300, and improving the product yield.

[0084] Please refer to Figure 6 and Figure 7 The limiting device 100 further includes a baffle 4, which is used to limit the movement of the limiting plate 2 along the first direction. Specifically, the sliding groove 31 is provided with a notch 311 in the first direction, and the baffle 4 is provided on the sliding platform 3. The baffle 4 is at least partially blocked in the notch 311. In this way, the limiting plate 2 is prevented from slipping out of the notch 311, and the convenience of using the limiting device 100 is improved.

[0085] Please refer to Figure 8 and Fig. 9The limiting plate 2 has a first position and a second position in the sliding groove 31. When the limiting plate 2 is in the first position, the workpiece is inserted into the limiting groove 24. When the limiting plate 2 is in the second position, the workpiece is separated from the limiting groove 24. Please refer to Figure 8 and Fig. 9 In order to limit the movement of the limit plate 2 between the first position and the second position, the sliding platform 3 is provided with a limit portion 5, and the limit plate 2 is provided with a matching portion 6, which is used to cooperate with the limit portion 5 to provide limitation when the limit plate 2 reaches the first position and the second position.

[0086] The structures of the limiting part 5 and the matching part 6 can be various. In one embodiment of the present application, the limiting part 5 includes a first magnetic block 51 and a second magnetic block 52, and the matching part 6 includes a third magnetic block 61. The third magnetic block 61 has opposite magnetic properties to the first magnetic block 51 and the second magnetic block 52. In order not to affect the movement of the limiting plate 2 in the sliding groove 31, the bottom of the sliding groove 31 is provided with a first mounting hole 312 and a second mounting hole 313 spaced along the third direction, and the limiting member is provided with a third mounting hole 27 on the side facing the bottom of the sliding groove 31. The first magnetic block 51 is provided in the first mounting hole 312, the second magnetic block 52 is provided in the second mounting hole 313, and the third magnetic block 61 is provided in the third mounting hole 27. When the limit plate 2 is in the first position, the third magnetic block 61 and the first magnetic block 51 are aligned with each other, and the third magnetic block 61 and the first magnetic block 51 are mutually attracted, thereby positioning the limit plate 2 in the first position, thereby preventing the limit plate 2 from continuing to move forward and colliding with the sub-plate 400, causing damage to the sub-plate 400. When the limit plate 2 is in the second position, the third magnetic block 61 and the second magnetic block 52 are aligned with each other, and the third magnetic block 61 and the second magnetic block 52 are mutually attracted, thereby positioning the limit plate 2 in the second position, thereby preventing the limit plate 2 from continuing to move forward and then escaping from the sliding groove 31. The magnetic blocks are simply arranged and occupy a small space, which can effectively reduce the manufacturing cost of the limit device 100, reduce the volume of the limit device 100, and improve the versatility of the limit device 100 in various spaces.

[0087] Please refer to Fig.10 In one embodiment of the present application, the limiting portion 5 includes a first limiting block 53 and a second limiting block 54 spaced apart along the third direction, and the matching portion 6 includes a third limiting block 62. When the limiting plate 2 is in the first position, the third limiting block 62 contacts the first limiting block 53, thereby preventing the limiting plate 2 from continuing to move in the direction of the first position. When the limiting plate 2 is in the second position, the third limiting block 62 contacts the second limiting block 54, thereby preventing the limiting plate 2 from continuing to move in the direction of the second position.

[0088] Please refer to Figure 3The limiting device 100 also includes a bolt 7, which is connected to the limiting plate 2. The bolt 7 is used to provide a fulcrum for the operator to push the limiting plate 2, thereby reducing the difficulty of pushing the limiting plate 2 and improving the convenience of operating the limiting device 100. The bolt 7 and the limiting plate 2 can be integrally formed, or they can be separately formed and then connected to each other, and the present application does not limit this. In one embodiment of the present application, the bolt 7 and the limiting plate 2 are separately formed and then connected to each other by bolts, so as to reduce the difficulty of manufacturing the bolt 7 on the limiting plate 2, reduce the manufacturing cost of the bolt 7 on the limiting plate 2, and improve the manufacturing efficiency of the bolt 7 and the limiting plate 2.

[0089] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0090] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiment and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A limiting device, characterized in that: It includes a fixed base and a limit plate, and the limit plate includes: A substrate, the substrate being stacked on the fixed base along a first direction; A first plate portion, disposed on the substrate; and The second plate portion is arranged on the substrate, and the second plate portion and the first plate portion are spaced apart at least partially along a second direction, and the second direction and the first direction are two directions perpendicular to each other; the substrate, the first plate portion and the second plate portion are surrounded to form a limiting groove, and the limiting groove is used to fix the workpiece.

2. The limiting device according to claim 1, characterized in that: The length of the first plate portion along the third direction is smaller than the length of the second plate portion along the third direction, and the third direction is perpendicular to the first direction and the second direction.

3. The limiting device according to claim 1, characterized in that: The limiting plate is movably arranged on the fixed base along a third direction, and the third direction is perpendicular to the first direction and the second direction. The limiting groove is provided with an opening in the third direction, and the opening is used for allowing the workpiece to slide into or out of the limiting groove.

4. The limiting device according to claim 3, characterized in that: Along the sliding direction of the workpiece, the cross-sectional area of ​​the opening gradually decreases.

5. The limiting device according to claim 3, characterized in that: The limiting plate is further provided with a tool changing groove connected to the limiting groove, and the tool changing groove is provided on a side of the limiting groove away from the opening; The length of the tool changing groove along the second direction is greater than the length of the limiting groove along the second direction.

6. The limiting device according to claim 3, characterized in that: The limiting device further comprises a sliding platform, and the sliding platform is arranged on the fixed base; The sliding platform is provided with a sliding groove, and the limiting plate is slidably arranged in the sliding groove.

7. The limiting device according to claim 6, characterized in that: A guide column is provided in the sliding groove; The limiting plate is provided with an elongated hole penetrating along the first direction, and the elongated hole extends along a third direction, and the third direction is a direction perpendicular to the first direction and the second direction; The elongated hole is used for the guide column to extend into.

8. The limiting device according to claim 6, characterized in that: The sliding groove is provided with a notch in the first direction; The limiting device further comprises a baffle, which is arranged on the sliding platform and at least partially blocked in the notch.

9. The limiting device according to any one of claims 6 to 8, characterized in that: The limiting plate has a first position and a second position in the sliding groove, when the workpiece is in the first position, the workpiece is separated from the limiting groove, and when the workpiece is in the second position, the workpiece is inserted into the limiting groove; The sliding platform is provided with a limiting portion, and the limiting plate is provided with a matching portion, and the matching portion is used to cooperate with the limiting portion to provide limiting when the limiting plate reaches the first position and the second position.

10. The limiting device according to claim 9, characterized in that: The limiting portion includes a first magnetic block and a second magnetic block, and the first magnetic block and the second magnetic block are arranged in the sliding groove at intervals along the third direction; The matching portion includes a third magnetic block, the third magnetic block has opposite magnetic properties to the first magnetic block, and the third magnetic block has opposite magnetic properties to the second magnetic block; When the limit plate is in the first position, the third magnetic block is aligned with the first magnetic block, and when the limit plate is in the second position, the third magnetic block is aligned with the second magnetic block.

11. The limiting device according to claim 1, characterized in that: The limiting device also includes a bolt, and the bolt is detachably connected to the limiting plate.

12. A welding jig, characterized in that: It comprises a limiting device as claimed in any one of claims 1 to 11.

13. A welding device, characterized in that: Comprising the welding jig as claimed in claim 12.

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