Welding apparatus and welding assembly for switchgear housings

Abstract

This invention discloses a welding apparatus and welding assembly for welding switch housings. The welding apparatus includes a base; a lower electrode, plate-shaped, is disposed on the base and located below a lower base plate; a positioning member having a first positioning part and a second positioning part, the first positioning part being disposed on the lower electrode and fixed relative to it; the second positioning part being spaced apart from the first positioning part to form a positioning groove, the positioning groove being used to embed at least partially into the upper base plate and at least partially into the lower base plate of the switch housing to limit the position of the switch housing; an upper electrode, extending vertically in the shape of a strip, located above the upper base plate and movably disposed on the base; a driving member, disposed on the base and drivenly connected to the upper electrode, the driving member being used to drive the upper electrode to move; the upper electrode and the lower electrode are used to spot weld and fix the upper base plate and the lower base plate together. It has the advantages of high welding efficiency and precise positioning.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically to a welding device and welding assembly for welding switch housings. Background Technology

[0002] Spot welding is a welding method in which two overlapping workpieces are placed between two electrodes, forming a weld point between the contact surfaces of the two workpieces. During spot welding, pressure is first applied to bring the workpieces into close contact, then current is applied, and the contact area of ​​the workpieces melts under the action of resistance heating, and a weld point is formed after cooling.

[0003] A switch is a device that performs information exchange in a communication system. Switch housings are small in size, with many bends and limited space. For example, the U-shaped opening formed by the bends in a typical switch housing is only 28mm to 44mm in size. This confined space makes it difficult for welding electrodes to reach the corresponding welding positions, requiring high positioning accuracy. Currently, the common welding method involves engineers manually operating welding torches, but this method is inefficient. Although automated welding devices exist, such as those described in CN113458571 A ("A Spot Welding Machine and Manufacturing Method for Refrigeration Equipment Door Housing") and CN102554437B ("Gantry-type Automatic Spot Welding System for Battery Packs"), these are generally suitable for welding large devices and are not well-suited for switch housings.

[0004] Therefore, further improvements are needed. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a welding device for welding switch housings that is suitable for switch housings, has high welding efficiency, and precise positioning, in light of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a welding assembly.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a welding device for welding switch housings, characterized in that: the switch housing includes...

[0008] Top base plate, extending to the left and right;

[0009] The lower base plate extends to the left and right, and is located below the upper base plate;

[0010] The welding apparatus includes:

[0011] Base; the base is provided with

[0012] The lower electrode is plate-shaped and located below the lower base plate, and is fixed relative to the base.

[0013] The positioning component has a first positioning part located inside the switch housing and a second positioning part located outside the switch housing. The first positioning part is disposed above the lower electrode and is fixed relative to the lower electrode. The second positioning part and the first positioning part are spaced apart by a distance in the left-right direction to form a positioning groove. The positioning groove is used to embed at least a portion of the upper bottom plate and at least a portion of the lower bottom plate of the switch housing to limit the position of the switch housing.

[0014] The upper electrode is a strip extending vertically, located above the upper base plate, and is movably mounted on the base.

[0015] A driving component is mounted on the base and connected to the upper electrode drive. This driving component is used to drive the upper electrode to move.

[0016] The upper and lower electrodes are used to spot weld the upper and lower base plates together.

[0017] Correspondingly, the bottom plate of the switch housing has an abutment surface located in front of the first positioning part, which extends in the left-right direction and abuts against the first positioning part in the front-back direction.

[0018] To facilitate driver installation, it also includes

[0019] The bracket is mounted on the base and located at the rear of the switch housing;

[0020] The drive unit is connected to the bracket.

[0021] To facilitate the upper electrode reaching the corresponding position, it also includes

[0022] The electrode fixing block has front and rear extension sections connected to the drive component, and left and right extension sections connecting the front and rear extension sections and the upper electrode. The shape of the electrode fixing block can be well adapted to the shape of the switch housing, thereby facilitating the upper electrode to reach the required welding position.

[0023] Preferably, the electrode fixing block has a cooling water channel with a bend. This results in a longer cooling water channel path and better cooling of the electrode fixing block.

[0024] Specifically, the structure of the driving component is such that the bracket has a guide rod extending in the left-right direction;

[0025] The driving component includes

[0026] A lead screw, extending in the left-right direction and rotatable around its own left-right axis, is mounted on a bracket, with the lead screw and guide rods spaced apart.

[0027] The motor has its output end connected to the lead screw drive and is used to drive the lead screw to rotate;

[0028] The movable block is constrained on the lead screw and can move left and right along the lead screw. The movable block has a bayonet that opens to the rear and has a U-shaped longitudinal section. The movable block is engaged with the guide rod by moving left and right through the bayonet.

[0029] A cylinder, fixed to a movable block, has a telescopic rod that moves up and down and is fixed to the upper electrode; the cylinder and the movable block are offset from each other in the vertical direction.

[0030] The bayonet has three functions: first, it allows the movable block to move along the guide rod, preventing it from easily falling off; second, the movable block releases the force of the cylinder onto the bracket, preventing the reaction force from being applied to the lead screw, thus ensuring the running accuracy of the lead screw and improving welding accuracy; and third, the movable block will not move upwards due to the action of the cylinder, ensuring that the movable block is always at the required height, which also helps improve welding accuracy.

[0031] To ensure the moving block is in its initial position, thereby improving welding accuracy, it also includes...

[0032] The zero-return detection switch, mounted on the bracket, is used to detect the initial position of the moving block.

[0033] To improve the compatibility of the welding device, two sets of upper and lower electrodes are arranged alternately on the left and right sides, respectively used for welding different positions on the switch casing. Thus, depending on the different switch models and welding positions required, one set of electrodes can be selected, or both sets can be used simultaneously for welding. This design provides good compatibility and can effectively meet various welding needs.

[0034] To detect the position of the switch chassis, it also includes...

[0035] The first detection switch is located outside the switch housing and is used to detect the position of the switch housing.

[0036] The second detection switch is disposed outside the switch housing and is distributed at intervals from the first detection switch in the left-right direction. The second detection switch is used to detect the position of the switch housing.

[0037] The control board has a first input terminal electrically connected to a first detection switch, a second input terminal electrically connected to a second detection switch, a first output terminal electrically connected to an upper electrode, and a second output terminal electrically connected to a lower electrode.

[0038] In order to limit the movement of the switch chassis, it also includes

[0039] The guide rail extends in the front of the switch housing in the front-to-back direction;

[0040] The stop is movably mounted on the guide rail and can slide back and forth along the guide rail. The stop is used to abut against the front wall of the switch housing, so that the switch housing is confined between the first positioning part and the stop.

[0041] In this way, the switch housing is limited by the stop block, and the stop block is movable, which makes it easy to limit or detach the switch housing, and can be used for switches of different sizes.

[0042] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a welding assembly, characterized in that: it includes the welding device for welding switch housings as described above, wherein the switch housing includes...

[0043] The upper and lower extension plates also extend in the left and right directions.

[0044] The upper base plate is connected to the lower end of the upper and lower extension plates;

[0045] Side panels, extending vertically, connecting to the sides of the vertical extension panels and extending rearward;

[0046] The bottom plate is connected to the lower end of the side plate;

[0047] A bent plate, connected to the rear end of the side plate and at an angle to it, is located behind the upper and lower extension plates.

[0048] Compared with the prior art, the advantages of this invention are as follows: by setting a driving component to move the upper electrode, the degree of automation is high, the welding efficiency is high, and the welding pressure is stable; by setting a strip-shaped upper electrode that extends vertically, although the machine casing has many bends, it is easy for the upper electrode to reach the position of the upper base plate; by setting a first positioning part and a second positioning part, the machine casing is accurately positioned; the plate-shaped lower electrode has two functions: first, it is used for spot welding. The lower electrode is relatively fixed and has a large area. Spot welding by moving the upper electrode is conducive to the upper electrode accurately reaching the spot welding position; second, it serves as the bottom of the positioning groove to support the upper and lower base plates that are confined within the positioning groove. In this way, the entire welding device can be accurately positioned, which is conducive to improving welding accuracy, while the structure is compact, reasonable and practical. Attached Figure Description

[0049] Figure 1 This is a perspective view of a switch housing installed according to an embodiment of the present invention;

[0050] Figure 2 This is a three-dimensional schematic diagram of the welding apparatus according to an embodiment of the present invention;

[0051] Figure 3 for Figure 2 A diagram from another angle;

[0052] Figure 4 for Figure 1 A diagram from another angle;

[0053] Figure 5 for Figure 4 A partial cross-sectional view;

[0054] Figure 6 for Figure 5 A magnified schematic diagram of part A in the middle;

[0055] Figure 7 This is a three-dimensional schematic diagram of the switch housing in an embodiment of the present invention;

[0056] Figure 8 for Figure 7 A magnified schematic diagram of part B in the middle;

[0057] Figure 9 This is a schematic diagram of the switch chassis from another angle in an embodiment of the present invention;

[0058] Figure 10 for Figure 9 A magnified schematic diagram of part C in the middle;

[0059] Figure 11 This is a cross-sectional view of the electrode fixing block in an embodiment of the present invention;

[0060] Figure 12 This is a three-dimensional schematic diagram of the upper electrode in an embodiment of the present invention;

[0061] Figure 13 This is a three-dimensional schematic diagram of the active block in an embodiment of the present invention. Detailed Implementation

[0062] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0063] See Figures 1 to 13 This is a preferred embodiment of the welding assembly of the present invention. See also... Figures 7-10 The switch housing 100 includes upper and lower extension plates 101, an upper base plate 102, a side plate 103, a lower base plate 104, and a bending plate 105. The upper and lower extension plates 101 extend in the left-right direction; the upper base plate 102 extends left and right and is connected to the lower end of the upper and lower extension plates 101; the side plate 103 extends vertically and vertically, is connected to the side of the upper and lower extension plates 101, and extends rearward; the lower base plate 104 extends left and right, is located below the upper base plate 102, and is connected to the lower end of the side plate 103; the bending plate 105 is connected to the rear end of the side plate 103 and forms an angle with it, and the bending plate 105 is located on the rear side of the upper and lower extension plates 101. In this embodiment, the upper and lower extension plates 101, the side plate 103, and the bending plate 105 form a U-shaped opening with a size of 28mm to 44mm.

[0064] See Figures 1-6 , Figures 11-13 The welding device includes a base 1, on which are mounted a lower electrode 2, a first positioning block 3, a second positioning block 4, an upper electrode 5, a driving component 7, a bracket 6, an electrode fixing block 8, a zero-return detection switch 200, a first detection switch 300, a second detection switch 400, a control board, a guide rail 500, a stop block 600, and other main components.

[0065] The lower electrode 2 is plate-shaped, located below the lower base plate 104, and is fixed relative to the base 1.

[0066] The positioning component 3 is an integral piece, having a first positioning part 31 located inside the switch housing 100 and a second positioning part 32 located outside the switch housing 100. The first positioning part 31 is disposed above the lower electrode 2 and is fixed relative to the lower electrode 2. The second positioning part 32 and the first positioning part 31 are spaced apart by a distance in the left-right direction to form a positioning groove X. The positioning groove X is used to embed at least a portion of the upper base plate 102 and at least a portion of the lower base plate 104 of the switch housing 100 (in this embodiment, specifically a portion of the upper base plate 102, the lower base plate 104, and a portion of the lower part of the side plate 103 into the positioning groove X) to limit the position of the switch housing 100. Correspondingly, the upper base plate 102 has an abutment surface 102a located in front of the first positioning part 3. The abutment surface 102a extends in the left-right direction and abuts against the first positioning part 3 in the front-back direction.

[0067] The upper electrode 5 is a strip extending vertically, located above the upper base plate 102, and movably mounted on the base 1. Preferably, there are three mounting positions spaced vertically between the upper electrode 5 and the electrode fixing block 8. After the lower part of the upper electrode 5 wears down after a period of use, the upper electrode 5 can be installed in a lower mounting position or installed upside down, which can extend the service life of the upper electrode 5.

[0068] The bracket 6 is mounted on the base 1 and located behind the switch housing 100; the bracket 6 has a guide rod 61 extending in the left-right direction.

[0069] The driving component 7 is mounted on the base 1, specifically connected to the bracket 6. Furthermore, the driving component 7 is driven by the upper electrode 5, and is used to move the upper electrode 5. Specifically, the driving component 7 includes a movable block 71, a cylinder 72, a lead screw 73, and a motor 74. The lead screw 73 extends in the left-right direction and is rotatably mounted on the bracket 6 around its own left-right axis. The lead screw 73 is spaced apart from the guide rod 61. The output end of the motor 74 is driven by the lead screw 73 and is used to drive the lead screw 73 to rotate. The movable block 71 is constrained on the lead screw 73 and can move left and right along the lead screw 73. The movable block 71 has a rearward-opening slot 71a with a U-shaped longitudinal cross-section. Figure 13The movable block 71 is movably engaged with the guide rod 61 via the latch 71a. The cylinder 72 is fixed to the movable block 71 and has a telescopic rod 721 that moves up and down and is fixed to the upper electrode 5. The cylinder 72 and the movable block 71 are offset from each other in the vertical direction. The upper electrode 5 and the lower electrode 2 are used to spot weld the upper base plate 102 and the lower base plate 104 together.

[0070] The electrode fixing block 8 has a front and rear extension section 81 connected to the driving member 7, and left and right extension sections 82 connecting the front end of the front and rear extension sections 81 and the upper electrode 5. See also Figure 11 The electrode fixing block 8 has a cooling water channel 8a, which has a bent section. Specifically, the cooling water channel includes front and rear extension sections and left and right extension sections.

[0071] A zero-return detection switch 200 is mounted on the bracket 6 to detect the initial position of the movable block 71. The zero-return detection switch 200 is electrically connected to the input terminal of the control board, and the output terminal of the control board is electrically connected to the movable block 71 to ensure that the movable block 71 returns to the same position after each welding operation, thus achieving higher welding accuracy.

[0072] There are two sets of upper electrodes 5 and lower electrodes 2 arranged at left and right intervals, used for welding different positions of the switch housing 100. In this embodiment, it is mainly achieved by... Figure 2 We'll use the electrodes on the left for welding. In other embodiments, depending on the shape of the switch housing 100, we can also choose to weld from... Figure 2 Use the electrodes on the right for welding.

[0073] The first detection switch 300 is located outside the side panel 103 and is used to detect the position of the switch housing 100.

[0074] The second detection switch 400 is disposed outside the side panel 103 and is spaced apart from the first detection switch 300 in the left and right directions. The second detection switch 400 is used to detect the position of the switch housing 100.

[0075] The control board has its first input terminal electrically connected to the first detection switch 300, its second input terminal electrically connected to the second detection switch 400, its first output terminal electrically connected to the upper electrode 5, and its second output terminal electrically connected to the lower electrode 2. The second detection switch 400, the first detection switch 300, and the zero-return detection switch 200 adopt existing structures, such as photoelectric sensors or distance sensors.

[0076] The guide rail 500 extends in the front of the switch housing 100 along the front-to-back direction. There are two guide rails 500 spaced apart on the left and right sides, and the number can be adjusted as needed.

[0077] The stop block 600 is movably disposed on the guide rail 500 and can slide back and forth along the guide rail 500. The stop block 600 is used to abut against the front wall surface of the upper and lower extension plates 101 of the switch housing 100, so that the switch housing 100 is limited between the first positioning part 31 and the stop block 600.

[0078] The working principle is as follows.

[0079] The switch housing 100 is placed on the base 1, and parts of the upper base plate 102 and the lower base plate 104 are confined in the positioning groove X. Then, the stop block 600 slides along the guide rail 500, so that the abutting surface 102a of the upper base plate 102 of the switch housing 100 abuts against the front side of the first positioning part 31, thus finally making the switch housing 100 stationary relative to the base 1.

[0080] Then, after the first detection switch 300 and the second detection switch 400 detect that the switch housing 100 is in a preset position, the control board makes the cylinder 72 work, and the telescopic rod 721 drives the upper electrode 5 to approach the upper base plate 102. The upper electrode 5 and the lower electrode 2 spot weld the upper base plate 102 and the lower base plate 104 together.

[0081] After welding is completed, the movable block 71 returns to its initial position, and the zero-return detection switch 200 detects the position of the movable block 71 to ensure that the movable block 71 is in the required position and improve welding accuracy.

Claims

1. A welding apparatus for welding switch housings, characterized in that: The switch housing (100) includes: The upper base plate (102) extends to the left and right; The lower base plate (104) extends to the left and right and is located below the upper base plate (102); The upper and lower extension plates (101) extend simultaneously in the left and right directions; The upper base plate (102) is connected to the lower end of the upper and lower extension plates (101); Side panel (103) extends vertically and horizontally, connecting to the side of the upper and lower extension panels (101) and extending rearward; The lower base plate (104) is connected to the lower end of the side plate (103); A bent plate (105) is connected to the rear end of the side plate (103) and forms an angle with it. The bent plate (105) is located on the rear side of the upper and lower extension plates (101). The welding apparatus includes: Base (1); Base (1) is provided with The lower electrode (2) is plate-shaped and located below the lower base plate (104), and is fixed relative to the base (1); The positioning component (3) has a first positioning part (31) located inside the switch housing (100) and a second positioning part (32) located outside the switch housing (100). The first positioning part (31) is disposed above the lower electrode (2) and is fixed relative to the lower electrode (2). The second positioning part (32) and the first positioning part (31) are spaced apart by a distance in the left and right direction to form a positioning groove (X). The positioning groove (X) is used to embed at least a portion of the upper base plate (102) and at least a portion of the lower base plate (104) of the switch housing (100) to limit the position of the switch housing (100). The upper electrode (5) is a strip extending vertically, located above the upper base plate (102), and is movably mounted on the base (1); A driving component (7) is disposed on the base (1) and is connected to the upper electrode (5) for driving the upper electrode (5) to move. The upper electrode (5) and the lower electrode (2) are used to spot weld the upper base plate (102) and the lower base plate (104) together; Correspondingly, the bottom plate (102) of the switch housing (100) has an abutment surface (102a) located in front of the first positioning part (31), which extends in the left-right direction and abuts against the first positioning part (31) in the front-back direction; The guide rail (500) extends in the front direction of the switch housing (100); A stop (600) is movably disposed on a guide rail (500) and can slide back and forth along the guide rail (500). The stop (600) is used to abut against the front wall of the switch housing (100) so that the switch housing (100) is limited between the first positioning part (31) and the stop (600).

2. The welding apparatus according to claim 1, characterized in that: It also includes The bracket (6) is mounted on the base (1) and located behind the switch housing (100); The drive unit (7) is connected to the bracket (6).

3. The welding apparatus according to claim 1, characterized in that: It also includes The electrode fixing block (8) has a front and rear extension section (81) connected to the drive member (7) and a left and right extension section (82) connecting the front end of the front and rear extension section (81) and the upper electrode (5).

4. The welding apparatus according to claim 3, characterized in that: The electrode fixing block (8) has a cooling water channel (8a) with a bend.

5. The welding apparatus according to claim 2, characterized in that: The bracket (6) has a guide rod (61) extending in the left-right direction; The driving component (7) includes A lead screw (73) extends in the left and right direction and is rotatably mounted on a bracket (6) around its own left and right axis. The lead screw (73) and the guide rod (61) are distributed at intervals. The motor (74) has its output end connected to the lead screw (73) and is used to drive the lead screw (73) to rotate; The movable block (71) is constrained on the lead screw (73) and can move left and right along the lead screw (73). The movable block (71) has a bayonet (71a) with a rearward opening and a longitudinal cross section of U. The movable block (71) is engaged with the guide rod (61) in a left and right manner through the bayonet (71a). A cylinder (72) is fixed to a movable block (71). The cylinder (72) has a telescopic rod (721) that moves up and down and is fixed to the upper electrode (5). The cylinder (72) and the movable block (71) are offset from each other in the vertical direction.

6. The welding apparatus according to claim 5, characterized in that: It also includes A zero-return detection switch (200) is mounted on the bracket (6) and is used to detect the initial position of the moving block (71).

7. The welding apparatus according to claim 1, characterized in that: The upper electrode (5) and the lower electrode (2) are arranged in two sets with left and right intervals, respectively used for welding different positions of the switch housing (100).

8. The welding apparatus according to claim 1, characterized in that: It also includes A first detection switch (300) is disposed outside the switch housing (100) and is used to detect the position of the switch housing (100); The second detection switch (400) is disposed outside the switch housing (100) and is spaced apart from the first detection switch (300) in the left and right directions. The second detection switch (400) is used to detect the position of the switch housing (100). The control board has its first input terminal electrically connected to the first detection switch (300), its second input terminal electrically connected to the second detection switch (400), its first output terminal electrically connected to the upper electrode (5), and its second output terminal electrically connected to the lower electrode (2).

9. A welding assembly, characterized in that: It includes a welding apparatus for welding switch housings as described in any one of claims 1 to 8.

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