CN216966612U

CN216966612U - Resistance welding machine

Info

Publication number: CN216966612U
Application number: CN202220612355.6U
Authority: CN
Inventors: 李云召
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-15
Anticipated expiration: 2032-03-21

Abstract

The utility model belongs to the field of resistance welding machines, and particularly relates to a resistance welding machine which comprises a rack, wherein a workbench is arranged on one side of the rack, a lower electrode clamp is arranged at the top of the workbench, a stand column is arranged on one side of the rack, a mounting seat is fixedly arranged on one side of the rack, an ultrasonic assembly is arranged on the mounting seat, an upper electrode is arranged below the ultrasonic assembly, four movable plates are arranged in the lower electrode clamp in a sliding manner, an arc-shaped clamping plate is arranged on one side of each movable plate and matched with the lower electrode, a moving mechanism is arranged at the bottom of each movable plate, a limiting mechanism is arranged on the other side of each movable plate and matched with the lower electrode clamp, external threads are arranged on the outer side of the lower electrode clamp, and a thread sleeve is sleeved on the upper thread of the lower electrode clamp and is in threaded connection with the external threads. The utility model has reasonable design, is convenient for fixing and unfixing the lower electrode, and is convenient for replacing the lower electrode.

Description

Resistance welding machine

Technical Field

The utility model relates to the technical field of resistance welding machines, in particular to a resistance welding machine.

Background

Resistance spot welding is the main method for welding the automobile body at present due to the advantages of low cost, high efficiency and easy automatic production. The working principle is that after the current is switched on, strong current passes through the metal to be welded, resistance heat generated by the metal in a region to be welded enables the metal to be locally molten, and meanwhile, the metal to be welded is finally connected together under the action of electrode pressure.

At present, welding defects that the weldability of advanced high-strength steel resistance spot welding is poor, a joint is prone to interface fracture and welding spatter are prone to generation and the like can be better overcome through the matching of an ultrasonic auxiliary device and an electrode plate in the existing resistance welding machine, but the electrode plate is troublesome to install and unstable to install, the use of the resistance welding machine is influenced, the problem that the electrode plate is inconvenient to disassemble and assemble is solved, and therefore the resistance welding machine is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that electrode plates are inconvenient to assemble and disassemble in the prior art, and provides a resistance welding machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a resistance welding machine comprises a rack, a workbench is installed on one side of the rack, a lower electrode clamp is installed on the top of the workbench, a stand column is installed on one side of the rack, a mounting seat is fixedly installed on one side of the rack, an ultrasonic assembly is installed on the mounting seat, an upper electrode is arranged below the ultrasonic assembly, four moving plates are slidably installed in the lower electrode clamp, an arc-shaped clamping plate is installed on one side of each moving plate and matched with the lower electrode, a moving mechanism is arranged at the bottom of each moving plate, a limiting mechanism is installed on the other side of each moving plate and matched with the lower electrode clamp, external threads are formed on the outer side of the lower electrode clamp, a thread sleeve is sleeved on the lower electrode clamp and connected with the external threads in a threaded manner, a plurality of moving holes are formed in the inner wall of the lower electrode clamp, a pushing mechanism is arranged in each moving hole, and matched with the thread sleeve, and the pushing mechanism is connected with the moving plate.

Preferably, the moving mechanism comprises a moving groove and a moving seat, the moving groove is formed in the bottom of the lower electrode clamp, the moving seat is fixedly arranged on the bottom of the moving plate, and the moving seat is in sliding connection with the corresponding moving groove.

Preferably, the limiting mechanism comprises a limiting rod and a limiting hole, the limiting hole is formed in the inner wall of the lower electrode clamp, the limiting rod is fixedly arranged on the movable plate, and the limiting rod is connected with the limiting hole in a sliding mode.

Preferably, pushing mechanism removes the seat and slides and set up in removing the downthehole including removing seat and push rod, and the push rod articulates on removing the seat, and the bottom of push rod articulates on the movable plate that corresponds, and thread bush and removal seat looks adaptation.

Preferably, the top inner wall and the bottom inner wall of the moving hole are fixedly provided with stabilizer bars, and the moving seat is sleeved on the corresponding stabilizer bars in a sliding manner.

Preferably, a plurality of handles are fixedly mounted on the outer side of the threaded sleeve and are arranged at equal intervals.

Preferably, the inner walls of the two sides of the moving hole are provided with limiting grooves, the two sides of the moving seat are provided with limiting seats, and the limiting seats are connected with the corresponding limiting grooves in a sliding mode.

Preferably, an insulating pad is arranged between the mounting seat and the ultrasonic assembly and between the mounting seat and the frame.

The utility model has the beneficial effects that:

1. when the lower electrode is installed, the lower electrode is placed in a lower electrode clamp, and the threaded sleeve rotates and moves downwards under the action of the external threads by rotating the threaded sleeve;

2. when the threaded sleeve moves, the threaded sleeve can extrude the moving seat, so that the moving seat moves downwards, the moving seat can push the moving plate to move through the push rod, the arc-shaped clamping plate can move synchronously with the moving plate, and the arc-shaped clamping plate can clamp and fix the lower electrode;

3. when a workpiece is welded, the controller controls the ultrasonic assembly, the ultrasonic assembly is transmitted to the lower electrode through the tool head, and the ultrasonic wave enables the lower electrode to generate micro mechanical vibration and generate heat through friction with the workpiece, and the heat and the resistance heat of the electrode act on the workpiece together.

Drawings

FIG. 1 is a schematic perspective view of a resistance welder according to the present invention;

FIG. 2 is a schematic structural diagram of a resistance welder according to the present invention;

FIG. 3 is a schematic top view of a lower electrode holder of a resistance welding machine according to the present invention;

FIG. 4 is a schematic structural diagram of part A of a resistance welder according to the present invention.

In the figure: 1. a frame; 2. a work table; 3. a lower electrode holder; 4. a lower electrode; 5. a column; 6. a mounting seat; 7. an ultrasonic component; 8. an upper electrode; 9. moving the plate; 10. an arc-shaped clamping plate; 11. a moving mechanism; 12. a limiting mechanism; 13. an external thread; 14. a threaded sleeve; 15. moving the hole; 16. a movable seat; 17. a push rod.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present, and the "disposed" refers to an existing connection, whether connected, mounted, secured, or permanently connected. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example one

A resistance welding machine comprises a rack 1, a workbench 2 is installed on one side of the rack 1, a lower electrode clamp 3 is installed on the top of the workbench 2, a stand column 5 is installed on one side of the rack 1, a mounting seat 6 is fixedly installed on one side of the rack 1, an ultrasonic component 7 is installed on the mounting seat 6, an ultrasonic auxiliary device comprises an ultrasonic power supply, a transducer, an amplitude transformer and a tool head, an upper electrode 8 is arranged below the ultrasonic component 7, four moving plates 9 are installed in the lower electrode clamp 3 in a sliding mode, an arc-shaped clamping plate 10 is installed on one side of each moving plate 9, the arc-shaped clamping plates 10 are matched with lower electrodes 4, a moving mechanism 11 is arranged at the bottom of each moving plate 9, a limiting mechanism 12 is installed on the other side of each moving plate 9, the limiting mechanism 12 is matched with the lower electrode clamp 3, external threads 13 are formed in the outer side of the lower electrode clamp 3, and threaded sleeves 14 are sleeved on the lower electrode clamp 3, and the threaded sleeve 14 is in threaded connection with the external thread 13, a plurality of moving holes 15 are formed in the inner wall of the lower electrode clamp 3, pushing mechanisms are arranged in the moving holes 15, the threaded sleeve 14 is matched with the pushing mechanisms, and the pushing mechanisms are connected with the moving plate 9.

In this embodiment, the moving mechanism 11 includes a moving slot and a moving seat, the moving slot is formed on the bottom of the lower electrode clamp 3, the moving seat is fixedly disposed on the bottom of the moving plate 9, and the moving seat is slidably connected with the corresponding moving slot, the limiting mechanism 12 includes a limiting rod and a limiting hole, the limiting hole is formed on the inner wall of the lower electrode clamp 3, the limiting rod is fixedly disposed on the moving plate 9, and the limiting rod is slidably connected with the limiting hole, the pushing mechanism includes a moving seat 16 and a push rod 17, the moving seat 16 is slidably disposed in the moving hole 15, the push rod 17 is hinged on the moving seat 16, the bottom end of the push rod 17 is hinged on the corresponding moving plate 9, and the thread sleeve 14 is adapted to the moving seat 16, the stabilizing bars are fixedly disposed on the top inner wall and the bottom inner wall of the moving hole 15, and the moving seat 16 is slidably sleeved on the corresponding stabilizing bars, a plurality of handles are fixedly disposed on the outer side of the thread sleeve 14, and a plurality of handles equidistant setting, all seted up the spacing groove on the both sides inner wall of removal hole 15, remove the both sides of seat 16 and all install spacing seat, and spacing seat and the spacing groove sliding connection who corresponds, be provided with insulating pad between mount pad 6 and the ultrasonic component 7, between mount pad 6 and the frame 1.

Example two

Referring to fig. 1-4, a resistance welding machine comprises a frame 1, a workbench 2 is installed on one side of the frame 1, a lower electrode clamp 3 is installed on the top of the workbench 2, a column 5 is installed on one side of the frame 1, an installation base 6 is fixedly installed on one side of the frame 1, an ultrasonic assembly 7 is installed on the installation base 6, an upper electrode 8 is arranged below the ultrasonic assembly 7, four moving plates 9 are slidably installed in the lower electrode clamp 3, an arc-shaped clamping plate 10 is installed on one side of each moving plate 9, the arc-shaped clamping plate 10 is matched with the lower electrode 4, a moving mechanism 11 is arranged at the bottom of each moving plate 9, a limiting mechanism 12 is installed on the other side of each moving plate 9, the limiting mechanism 12 is matched with the lower electrode clamp 3, external threads 13 are formed on the outer side of the lower electrode clamp 3, a thread sleeve 14 is sleeved on the lower electrode clamp 3, and the thread sleeve 14 is in threaded connection with the external threads 13, a plurality of moving holes 15 are formed in the inner wall of the lower electrode clamp 3, a pushing mechanism is arranged in each moving hole 15, the threaded sleeves 14 are matched with the pushing mechanisms, and the pushing mechanisms are connected with the moving plate 9.

In this embodiment, the moving mechanism 11 includes a moving groove formed on the bottom of the lower electrode holder 3 and a moving seat fixedly disposed on the bottom of the moving plate 9 and slidably connected to the corresponding moving groove, and the moving plate 9 can be guided by the moving mechanism 11.

In this embodiment, the limiting mechanism 12 includes a limiting rod and a limiting hole, the limiting hole is formed in the inner wall of the lower electrode clamp 3, the limiting rod is fixedly disposed on the movable plate 9, and the limiting rod is slidably connected to the limiting hole, and the limiting mechanism 12 is disposed to limit the movable plate 9, so that the movable plate 9 can be stably moved.

In this embodiment, the pushing mechanism includes a moving seat 16 and a push rod 17, the moving seat 16 is slidably disposed in the moving hole 15, the push rod 17 is hinged to the moving seat 16, the bottom end of the push rod 17 is hinged to the corresponding moving plate 9, and the thread bushing 14 is adapted to the moving seat 16, so that the moving plates 9 can move synchronously by the pushing mechanism.

In this embodiment, the top inner wall and the bottom inner wall of the moving hole 15 are fixedly provided with stabilizer bars, and the moving seat 16 is slidably sleeved on the corresponding stabilizer bars, and by providing the stabilizer bars, the moving seat 16 can be guided, so that the moving seat 16 can move stably.

In this embodiment, the outside fixed mounting of thread bush 14 has a plurality of handles, and a plurality of equidistant settings of handle, and through being provided with a plurality of handles, be convenient for drive thread bush 14 rotates.

In this embodiment, all seted up the spacing groove on the both sides inner wall of removal hole 15, the spacing seat is all installed to the both sides of removing seat 16, and spacing seat and the spacing groove sliding connection who corresponds, through being provided with spacing groove and spacing seat, can be so that remove seat 16 and carry out stable removal.

In this embodiment, insulating pads are disposed between the mounting base 6 and the ultrasonic component 7 and between the mounting base 6 and the rack 1, and the insulating pads prevent current on the rack from interfering with normal operation of ultrasonic waves.

In the utility model, when the lower electrode 4 is installed, the lower electrode 4 is firstly placed in the lower electrode clamp 3, the threaded sleeve 14 is rotated to enable the threaded sleeve 14 to rotate and move downwards under the action of the external thread 13 by rotating the threaded sleeve 14, when the threaded sleeve 14 moves, the threaded sleeve 14 can extrude the moving seat 16 to enable the moving seat 16 to move downwards, the moving seat 16 can push the moving plate 9 to move through the push rod 17, the arc-shaped clamping plate 10 can synchronously move with the moving plate 9, the arc-shaped clamping plate 10 can clamp and fix the lower electrode 4, when a workpiece is welded, the ultrasonic assembly 7 is controlled by the controller, the ultrasonic assembly 7 is transmitted to the lower electrode 4 through the tool head, the ultrasonic wave enables the lower electrode 4 to generate micro mechanical vibration and generate heat by friction with the workpiece, and the heat acts on the workpiece together with the resistance heat of the electrode.

The present invention provides a resistance welding machine as described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a resistance welding machine, includes frame (1), its characterized in that, workstation (2) are installed to one side of frame (1), bottom electrode anchor clamps (3) are installed at the top of workstation (2), stand (5) are installed to one side of frame (1), one side fixed mounting of frame (1) has mount pad (6), install ultrasonic component (7) on mount pad (6), the below of ultrasonic component (7) is equipped with upper electrode (8), slidable mounting has four movable plates (9) in bottom electrode anchor clamps (3), arc cardboard (10) are installed to one side of movable plate (9), just arc cardboard (10) and bottom electrode (4) looks adaptation, the bottom of movable plate (9) is equipped with moving mechanism (11), stop gear (12) are installed to the opposite side of movable plate (9), just stop gear (12) and lower electrode anchor clamps (3) looks adaptation, external screw thread (13) have been seted up in the outside of lower electrode anchor clamps (3), the threaded sleeve is equipped with thread bush (14) on lower electrode anchor clamps (3), just thread bush (14) and external screw thread (13) threaded connection, a plurality of removal holes (15) have been seted up on the inner wall of lower electrode anchor clamps (3), removal hole (15) are equipped with pushing mechanism, thread bush (14) and pushing mechanism looks adaptation, just pushing mechanism is connected with movable plate (9).

2. The machine according to claim 1, wherein the moving mechanism (11) comprises a moving slot and a moving seat, the moving slot is formed on the bottom of the lower electrode holder (3), the moving seat is fixedly arranged on the bottom of the moving plate (9), and the moving seat is slidably connected with the corresponding moving slot.

3. The resistance welder according to claim 1, wherein the limiting mechanism (12) comprises a limiting rod and a limiting hole, the limiting hole is formed on the inner wall of the lower electrode clamp (3), the limiting rod is fixedly arranged on the movable plate (9), and the limiting rod is connected with the limiting hole in a sliding manner.

4. A machine as claimed in claim 1, characterized in that said pushing means comprise a mobile seat (16) and a push rod (17), the mobile seat (16) being slidingly arranged in the mobile hole (15), the push rod (17) being hinged on the mobile seat (16), the bottom end of the push rod (17) being hinged on the corresponding mobile plate (9), and the threaded sleeve (14) being adapted to the mobile seat (16).

5. The resistance welder according to claim 1, wherein the moving holes (15) are fixed with stabilizer bars on the top inner wall and the bottom inner wall, and the moving seat (16) is slidably sleeved on the corresponding stabilizer bars.

6. A machine as claimed in claim 1, characterised in that a plurality of handles are fixedly mounted on the outside of said threaded sleeve (14) and are arranged at equal intervals.

7. The resistance welding machine according to claim 1, wherein the inner walls of the two sides of the moving hole (15) are respectively provided with a limiting groove, the two sides of the moving seat (16) are respectively provided with a limiting seat, and the limiting seats are connected with the corresponding limiting grooves in a sliding manner.

8. A resistance welder according to claim 1, characterized in that insulating pads are arranged between the mounting seat (6) and the ultrasonic assembly (7) and between the mounting seat (6) and the machine frame (1).