Device convenient for changing single-phase alternating-current resistance welding machine into medium-frequency resistance welding machine

Abstract

The utility model relates to the technical field of resistance welding machines, in particular to a device convenient for a single-phase alternating-current resistance welding machine to be changed into a medium-frequency resistance welding machine, which comprises a control box arranged on one side of the resistance welding machine, a transformer is arranged in the control box, and a U-shaped mounting plate is fixedly connected to the bottom of the transformer. A fixing cavity with a rectangular cross section is formed in the control box, and fixing plates for mounting and fixing a transformer are symmetrically arranged in the fixing cavity. A mounting plate at the bottom of the medium-frequency transformer is inserted into a mounting opening, the bottom of the mounting plate can extrude a fixing plate to be away from the mounting plate through an inclined plane and extrude a first spring, and when a fixing opening is aligned with the fixing plate, the fixing plate can be pushed to be inserted into the fixing opening under the action of reset force of the first spring; and the two fixing plates are inserted into the two fixing openings in the mounting bottom, so that the medium-frequency transformer can be quickly mounted and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance welding machines, in particular to a device for facilitating the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine. Background Art

[0002] Resistance welding machine is a kind of equipment that uses the principle of resistance heating for welding. It presses the workpiece to be welded between two electrodes and applies current. It uses the resistance heat effect generated by the current flowing through the contact surface and adjacent areas of the workpiece to heat it to a molten or plastic state, so that it forms a metal bond. Resistance welding machines include single-phase AC resistance welding machines and medium-frequency resistance welding machines;

[0003] At present, when a single-phase AC resistance welding machine needs to be converted into a medium-frequency resistance welding machine, it is generally necessary to take out the single-phase transformer inside the control box on one side of the resistance welding machine, and then install the medium-frequency transformer inside the control box, so that the single-phase AC resistance welding machine can be converted into a medium-frequency resistance welding machine. However, when disassembling the single-phase transformer, the staff needs to use a screwdriver to unscrew multiple screws before the single-phase transformer can be taken out. When installing the medium-frequency transformer, the staff needs to use a screwdriver to screw on multiple screws before the medium-frequency transformer can be installed and fixed. This method of disassembling, taking out and installing and fixing by screws is relatively troublesome. Therefore, a device is now proposed to facilitate the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine. Utility Model Content

[0004] The purpose of the utility model is to solve the disadvantages of the prior art that when disassembling a single-phase transformer, the staff needs to use a screwdriver to unscrew multiple screws before the single-phase transformer can be taken out, and when installing a medium-frequency transformer, the staff needs to use a screwdriver to screw on multiple screws before the medium-frequency transformer can be installed and fixed. This method of disassembling, taking out and installing and fixing by screws is relatively troublesome, and a device is proposed to facilitate the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for facilitating the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine comprises a control box arranged at one side of the resistance welding machine, a transformer is arranged inside the control box, a U-shaped mounting plate is fixedly connected to the bottom of the transformer, a fixing cavity with a rectangular cross-section is arranged inside the control box, fixing plates for mounting and fixing the transformer are symmetrically arranged inside the fixing cavity, and a taking rod for taking out the transformer is symmetrically arranged at the inner bottom of the control box.

[0007] Preferably, one side of the control box is connected with a box door via symmetrically arranged hinges.

[0008] Preferably, the fixing plate is slidably connected to the inner wall of the fixing cavity, an inclined surface is provided on the side of the fixing plate close to the frequency converter, a fixing groove is provided on the side of the fixing plate away from the frequency converter, fixing rods are symmetrically provided inside the fixing cavity, one end of the fixing rod is fixedly connected to the inner wall of the fixing cavity, and the other end of the fixing rod is slidably connected to the inner wall of the fixing groove.

[0009] Preferably, a first spring is sleeved on the outer side of the fixing rod, one end of the first spring is fixedly connected to the inner wall of the fixing cavity, the other end of the first spring is fixedly connected to the fixing plate, the inner bottom of the control box is symmetrically provided with mounting openings that pass through the fixing cavity, the mounting plate is slidably connected to the inner wall of the mounting opening, and a fixing opening that slides with the fixing plate is provided on the mounting plate.

[0010] Preferably, the inner bottom of the control box is symmetrically provided with movable holes that pass through the fixed cavity, the picking rod is slidably connected to the inner wall of the movable hole, the top of the picking rod is fixedly connected to a pressure plate, the picking rod is sleeved with a second spring, the top of the second spring is fixedly connected to the pressure plate, and the bottom of the second spring is fixedly connected to the inner bottom of the control box.

[0011] Preferably, a moving groove with a right-angled triangle cross-section is provided on the top of the fixing plate, and the bottom end of the picking rod is hemispherical.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When disassembling a single-phase transformer, by pressing the pressure plate downward, the pressure plate will drive the removal rod to move downward and insert it into the fixed cavity. The removal rod will continue to move downward to squeeze the movable groove and control the fixing plate to move out from the inside of the fixed port, so that the single-phase transformer can be directly taken out. It is no longer necessary to use a screwdriver to unscrew multiple screws to take out the single-phase transformer, which is more convenient.

[0014] 2. When installing the medium frequency transformer, insert the mounting plate at the bottom of the medium frequency transformer into the mounting opening. The bottom of the mounting plate will squeeze the fixing plate away from the mounting plate and the first spring through the inclined surface. When the fixing opening is aligned with the fixing plate, the fixing plate will be pushed into the fixing opening under the action of the reset force of the first spring. The two fixing plates are inserted into the two fixing openings at the bottom of the installation, so that the installation and fixation of the medium frequency transformer can be completed quickly. It is no longer necessary to use a screwdriver and multiple screws to install and fix the medium frequency transformer, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of a device proposed by the utility model for facilitating the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine;

[0016] Figure 2This is a schematic diagram of the internal three-dimensional structure of a device proposed by the utility model for facilitating the conversion of a single-phase AC resistance welding machine into a medium-frequency resistance welding machine;

[0017] Figure 3 It is a schematic diagram of the cross-sectional connection of the pick-up rod, the second spring, and the moving groove;

[0018] Figure 4 It is a schematic diagram of the cross-sectional connection three-dimensional structure of the first spring, the fixing rod and the fixing groove.

[0019] In the figure: 1 control box, 2 transformer, 3 mounting plate, 4 fixed cavity, 5 fixed plate, 6 pick-up rod, 7 box door, 8 inclined surface, 9 fixed groove, 10 fixed rod, 11 first spring, 12 mounting opening, 13 fixed opening, 14 moving hole, 15 pressure plate, 16 second spring, 17 moving groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-Figure 4 A device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine includes a control box 1 arranged at one side of the resistance welding machine, a transformer 2 is arranged inside the control box 1, a U-shaped mounting plate 3 is fixedly connected to the bottom of the transformer 2, a rectangular cross-section fixing cavity 4 is arranged inside the control box 1, a fixing plate 5 for mounting and fixing the transformer 2 is symmetrically arranged inside the fixing cavity 4, and a take-out rod 6 for taking out the transformer 2 is symmetrically arranged at the inner bottom of the control box 1.

[0022] It should be noted that before disassembly, the transformer 2 is a single-phase transformer 2 and the resistance welding machine is a single-phase AC resistance welding machine. After disassembly and replacement, the transformer 2 is a medium-frequency transformer 2 and the resistance welding machine is a medium-frequency resistance welding machine.

[0023] Furthermore, one side of the control box 1 is connected with a box door 7 via symmetrically arranged hinges;

[0024] It should be noted that the bottom of the door 7 is provided with evenly distributed auxiliary heat dissipation holes, which can assist ventilation and heat dissipation.

[0025] Furthermore, the fixing plate 5 is slidably connected to the inner wall of the fixing cavity 4, an inclined surface 8 is provided on the side of the fixing plate 5 close to the frequency converter, a fixing groove 9 is provided on the side of the fixing plate 5 away from the frequency converter, and fixing rods 10 are symmetrically provided inside the fixing cavity 4, one end of the fixing rod 10 is fixedly connected to the inner wall of the fixing cavity 4, and the other end of the fixing rod 10 is slidably connected to the inner wall of the fixing groove 9;

[0026] It should be noted that by squeezing the inclined surface 8 on one side of the fixing plate 5 , when the mounting plate 3 moves downward, the fixing plate 5 can be moved away from the mounting plate 3 and squeeze the first spring 11 , so that the fixing plate 5 can be inserted into the fixing port 13 and fix the transformer 2 .

[0027] Furthermore, a first spring 11 is sleeved on the outer side of the fixing rod 10, one end of the first spring 11 is fixedly connected to the inner wall of the fixing cavity 4, and the other end of the first spring 11 is fixedly connected to the fixing plate 5. The inner bottom of the control box 1 is symmetrically provided with a mounting opening 12 that passes through the fixing cavity 4, the mounting plate 3 is slidably connected to the inner wall of the mounting opening 12, and a fixing opening 13 that slides with the fixing plate 5 is provided on the mounting plate 3;

[0028] It should be noted that the first spring 11 can be used to fix the position of the fixed plate 5 and to reset the fixed plate 5 after it has moved.

[0029] It should be noted that the cross section of the fixing plate 5 is rectangular, the cross section of the fixing opening 13 is rectangular, and the two rectangles are consistent in shape and size, so that the fixing plate 5 can be inserted into the fixing opening 13 and the inverter can be limited and fixed.

[0030] Furthermore, the inner bottom of the control box 1 is symmetrically provided with a moving hole 14 that penetrates the interior of the fixed cavity 4, the pickup rod 6 is slidably connected to the inner wall of the moving hole 14, the top of the pickup rod 6 is fixedly connected to a pressure plate 15, a second spring 16 is sleeved on the pickup rod 6, the top of the second spring 16 is fixedly connected to the pressure plate 15, and the bottom of the second spring 16 is fixedly connected to the inner bottom of the control box 1;

[0031] It should be noted that the second spring 16 can support and fix the position of the pickup rod 6, and can also reset the pickup rod 6 after it moves downward.

[0032] Furthermore, a moving groove 17 having a right-angled triangle cross section is provided on the top of the fixing plate 5, and the bottom end of the picking rod 6 is hemispherical;

[0033] It should be noted that, by moving the inclined surface of the groove 17 , the bottom of the taking rod 6 can be moved downward to squeeze the inclined surface, so that the fixing plate 5 can be controlled to move away from the mounting plate 3 and out of the fixing opening 13 , so that the transformer 2 can be taken out.

[0034] Working principle of this utility model:

[0035] First, insert the mounting plate 3 at the bottom of the intermediate frequency transformer 2 into the mounting opening 12. The bottom of the mounting plate 3 will squeeze the fixing plate 5 away from the mounting plate 3 and the first spring 11 through the inclined surface 8. When the fixing opening 13 is aligned with the fixing plate 5, the fixing plate 5 will be pushed into the fixing opening 13 under the action of the reset force of the first spring 11. The two fixing plates 5 are inserted into the two fixing openings 13 at the bottom of the installation, so that the installation and fixation of the intermediate frequency transformer 2 can be completed quickly.

[0036] Then, by pressing the pressing plate 15 downward, the pressing plate 15 will drive the removal rod 6 to move downward and insert into the interior of the fixing cavity 4. The removal rod 6 will continue to move downward to squeeze the movable groove 17 and control the fixing plate 5 to move out from the interior of the fixing port 13, so that the single-phase transformer 2 can be directly taken out.

[0037] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine, comprising a control box (1) arranged on one side of the resistance welding machine, characterized in that: A transformer (2) is arranged inside the control box (1), a U-shaped mounting plate (3) is fixedly connected to the bottom of the transformer (2), a fixing cavity (4) with a rectangular cross section is arranged inside the control box (1), a fixing plate (5) for mounting and fixing the transformer (2) is symmetrically arranged inside the fixing cavity (4), and a taking rod (6) for taking out the transformer (2) is symmetrically arranged at the inner bottom of the control box (1).

2. The device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine according to claim 1, characterized in that: One side of the control box (1) is connected to a box door (7) via symmetrically arranged hinges.

3. The device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine according to claim 1, characterized in that: The fixing plate (5) is slidably connected to the inner wall of the fixing cavity (4); an inclined surface (8) is provided on the side of the fixing plate (5) close to the frequency converter; a fixing groove (9) is provided on the side of the fixing plate (5) away from the frequency converter; fixing rods (10) are symmetrically provided inside the fixing cavity (4); one end of the fixing rod (10) is fixedly connected to the inner wall of the fixing cavity (4); and the other end of the fixing rod (10) is slidably connected to the inner wall of the fixing groove (9).

4. The device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine according to claim 3, characterized in that: A first spring (11) is sleeved on the outer side of the fixing rod (10), one end of the first spring (11) is fixedly connected to the inner wall of the fixing cavity (4), and the other end of the first spring (11) is fixedly connected to the fixing plate (5). The inner bottom of the control box (1) is symmetrically provided with a mounting opening (12) penetrating the fixing cavity (4), the mounting plate (3) is slidably connected to the inner wall of the mounting opening (12), and the mounting plate (3) is provided with a fixing opening (13) that slides with the fixing plate (5).

5. The device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine according to claim 1, characterized in that: The inner bottom of the control box (1) is symmetrically provided with a movable hole (14) that penetrates the interior of the fixed cavity (4); the pickup rod (6) is slidably connected to the inner wall of the movable hole (14); the top of the pickup rod (6) is fixedly connected to a pressure plate (15); a second spring (16) is sleeved on the pickup rod (6); the top of the second spring (16) is fixedly connected to the pressure plate (15); and the bottom of the second spring (16) is fixedly connected to the inner bottom of the control box (1).

6. The device for converting a single-phase AC resistance welding machine into a medium-frequency resistance welding machine according to claim 1, characterized in that: The top of the fixing plate (5) is provided with a moving groove (17) with a right-angled triangle cross section, and the bottom end of the picking rod (6) is hemispherical.

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