CN105057864A - Stepping multipoint micro-resistance spot welding device - Google Patents

Abstract

The invention discloses a step-by-step multi-point micro-resistance spot welding device, which comprises a welding machine body, a welding machine base, an upper wheel electrode, a lower wheel electrode, a pressurizing mechanism, a welding power box, a stepping motor, a stepping Motor power box, reducer and automatic control system. It is characterized in that the pressurizing mechanism is installed on the upper end of the fuselage, and the pressurizing mechanism is connected to the upper wheel electrode to control the pressing down of the upper wheel electrode; the stepping motor is connected to the lower electrode wheel through the reduction device, and the stepping motor drives the lower wheel electrode to rotate, and the upper wheel Electrode follow-up, with the automatic control system of the micro-resistance spot welding machine, the electrode automatically applies pressure, automatically energizes, one step at a time, and realizes automatic welding of multi-point small-pitch micro-resistance spot welding. Technical effect of the present invention: the present invention is suitable for in-line multi-point small-pitch micro-resistance welding, or for seam welding of small structural parts. The device has many advantages such as simple structure, low cost, adjustable welding spot spacing, high production efficiency and the like.

Description

A step-by-step multi-point micro-resistance spot welding device

technical field

The invention relates to a step-by-step multi-point micro-resistance spot welding device, which is suitable for in-line multi-point micro-resistance welding with small spacing, or seam welding of small structural parts.

Background technique

With the miniaturization, miniaturization and high performance of electronic components and medical devices, the connection of materials has become one of the key processes in the manufacture of micro devices. Since the size of the welded parts is very small, the connection process requires high energy control accuracy and size and position control accuracy, which shows many particularities in the connection process, and its research has become a relatively independent direction-micro-connection.

Micro-resistance welding is an important micro-connection technology widely used in the manufacture of microelectronics and biomedical devices, such as batteries, relays, and cardiac pacemakers. In recent years, the demand for micro-resistance spot welding is increasing, while the research work is still concentrated on conventional resistance welding. The research on micro-resistance welding technology and equipment is lagging behind. It is necessary to further study the law of micro-resistance welding technology and develop special-purpose micro- Resistance welding equipment for the fabrication of micro devices.

Micro-resistance welding equipment belongs to precision equipment, which requires high manufacturing precision and control precision of process parameters. Most of the equipment in the market are imported equipment, such as Japan's Miyachi, Avio and other brands. In recent years, China has also accelerated this aspect. Research and development, also launched a variety of models of micro-resistance welding equipment. Generally speaking, at present, most of the micro-resistance welding equipment is used for single-point welding. The invention develops a step-by-step multi-point micro-resistance spot welding device on the basis of the original micro-resistance spot welding equipment according to the requirements of multi-point and small-pitch micro-resistance welding.

Contents of the invention

The present invention provides a step-by-step multi-point micro-resistance spot welding device based on the original micro-resistance spot welding equipment according to the requirements of multi-point and small-pitch micro-resistance welding. Design and develop the stepping wheel electrode and its driving system as well as the automatic control system of the whole equipment. The device has many advantages such as simple structure, low cost, adjustable welding spot spacing, high production efficiency and the like.

The present invention is achieved in this way, a step-by-step multi-point micro-resistance spot welding device mainly includes: a welding machine base, an insulating gasket, a lower wheel electrode bracket, a lower wheel electrode, a shaft coupling, a reducer, and a stepping motor , the upper wheel electrode, the wheel arm, the fuselage, the pressurizing mechanism, the welding power box, the stepper motor power box and the control system; it is characterized in that: the pressurizing mechanism is fixed on the fuselage, and the wheel arm and the pressurizing mechanism The upper wheel electrode is installed on the wheel arm, the stepper motor and reducer are connected to the base of the welding machine by adding insulating gaskets, the output end of the reducer is connected to the lower wheel electrode through a coupling, and the output end of the welding power box is connected to the welding machine base respectively. The base of the welding machine is connected with the wheel arm to form a welding circuit; the stepping motor power box, the pressure control valve of the pressurizing mechanism, and the welding power box are all connected with the control system.

The pressurizing mechanism of the present invention controls the pressing down of the upper wheel electrode; the stepping motor connects the lower electrode wheel through the deceleration device, drives the lower wheel electrode to rotate through the stepping motor, and the upper wheel electrode follows the movement, and cooperates with the automatic control of the micro-resistance spot welding machine System, the electrode automatically applies pressure, automatically energizes, one step at a time, realizes automatic welding of multi-point small-pitch micro-resistance spot welding.

The operation process of the present invention: switch on the power supply, open the automatic control system; pre-set welding parameters according to the performance and thickness of the welding material, such as: welding pressure, welding current, welding spot spacing, etc.; place the cleaned weldment on two between the wheels; the pressurizing mechanism applies welding pressure to the upper electrode wheel, and passes the welding current to form an initial solder joint; The electrode wheel follows to make the welding move the set welding spot spacing; the pressure mechanism adjusts the pressure of the upper electrode wheel to the welding pressure, and then passes the preset welding current to form the second welding spot; and so on, the in-line welding is completed. Multi-point small-pitch micro-resistance welding.

The step-by-step multi-point micro-resistance spot welding device of the present invention is suitable for in-line multi-point small-pitch micro-resistance welding, or seam welding of small structural parts. The utility model has the advantages of simple structure, low cost, adjustable solder spot spacing, high production efficiency and the like.

Furthermore, the step-by-step multi-point micro-resistance spot welding device can automatically adjust the welding current to compensate for the diversion of the first welding spot. On the control interface, the current compensation scheme can be set according to the test results. The step-by-step multi-point micro-resistance spot welding device can easily replace the electrode wheel and adapt to welding of different materials. The control system of the step-by-step multi-point micro-resistance spot welding device can set the welding current, welding point spacing, and pressure between electrode wheels to realize multi-point automatic welding.

The technical effect of the present invention is: the design and development of the step-by-step wheel electrode and its driving system and the automatic control system of the whole device can realize in-line multi-point small-pitch micro-resistance welding, or seam welding of small structural parts; welding current, welding Parameters such as point spacing and electrode wheel pressure can be adjusted to meet the welding requirements of various materials and structural parts; the structure is simple, the cost is low, and the production efficiency is high.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the main part of the device of the present invention.

In the figure, 1. Welding machine base, 2. Insulation gasket, 3. Lower wheel electrode bracket, 4. Lower wheel electrode, 5. Coupling, 6. Reducer, 7. Stepper motor, 8. Upper wheel electrode , 9, wheel arm, 10, fuselage, 11, pressurization mechanism, 12, welding power box, 13, stepping motor power box, 14, control system.

Detailed ways

The present invention is achieved in this way, a step-by-step multi-point micro-resistance spot welding device mainly includes: a welding machine base 1, an insulating gasket 2, a lower wheel electrode bracket 3, a lower wheel electrode 4, a shaft coupling 5, Reducer 6, stepper motor 7, upper wheel electrode 8, machine wheel arm 9, fuselage 10, pressurization mechanism 11, welding power supply box 12, stepper motor power supply box 13 and control system 14; It is characterized in that: pressurization The mechanism 11 is fixed on the top of the fuselage 10, the wheel arm 9 is connected with the pressurizing mechanism 11, and insulating material is added to the connection part to prevent current shunting. The upper wheel electrode 8 is installed on the wheel arm 9, and the electrode can be replaced according to different welding materials 4 and electrode 8, stepper motor 7 and reducer 6 are connected to welding machine base 1 by adding insulating gasket 2, the output end of reducer 6 is connected to lower wheel electrode 8 through coupling 5, and the output ends of welding power box 12 are respectively Connect with the welder base 1 and the wheel arm 9 to form a welding circuit; the stepper motor power supply box 13, the pressure control valve of the pressurizing mechanism 11, and the welding power supply box 12 are all connected to the control system 14; the welding process is set The parameters of each control the timing of each action.

The specific implementation method of the present invention is: open computer control system 14, connect welding power supply box 12 power supply, open automatic control system; According to the performance and the thickness of welding material, pre-set welding parameters on the operation interface of computer control system 14; The cleaned weldment is placed between the electrode wheel 4 and the electrode wheel 8; through the computer control system 14, a signal is applied to the pressure mechanism 11, and the pressure mechanism 11 applies welding pressure to the upper electrode wheel 8, and pre-presses for a certain period of time , and then the welding power supply box 12 passes the welding current according to the set welding sequence to obtain the initial welding spot of the workpiece; after the initial welding spot is formed, the pressing mechanism 11 adjusts the upper electrode according to the timing and pressure value given by the computer control system 14 The pressure of the wheel 8 ensures that the workpiece is clamped. At the same time, the stepping motor 7 drives the lower electrode wheel 4 to rotate, and the upper electrode wheel 8 follows to move the weldment to the set solder spot spacing; the computer control system 14 gives the pressure mechanism 11 The pressure conversion signal, the pressurizing mechanism 11 applies welding pressure to the upper electrode wheel 8, and the welding power supply box 12 passes the preset welding current to form the second welding spots, and by analogy, the in-line multi-point small-pitch micro-resistance welding is completed; welding After completion, the pressing mechanism 11 then drives the upper electrode 8 to move upwards, loosen the weldment, and finally take out the welded components.

Claims (3)

1. a step-by-step movement multiple spot MEMS technology device, mainly comprise welder base, insulation spacer, lower whorl electrode suppor, lower whorl electrode, shaft coupling, reductor, stepper motor, on take turns electrode, wheel arm, fuselage, pressing mechanism, source of welding current case, power supply for step-by-step motor case and control system; It is characterized in that: pressing mechanism is fixed on above fuselage, wheel arm is connected with pressing mechanism, on take turns electrode and be arranged on wheel arm, stepper motor is connected with welder base by adding insulation spacer with reductor, output end of reducer is by shaft coupling and lower whorl Electrode connection, source of welding current case output is connected with welder base and wheel arm respectively, forms welding circuit; Pressure-control valve and the source of welding current case of described power supply for step-by-step motor case, pressing mechanism are all connected with control system.

2. a kind of step-by-step movement multiple spot MEMS technology device according to claim 1, is characterized in that: the operating process of MEMS technology device is as follows: switch on power, and opens automatic control system; Welding parameter is pre-set according to the performance of welding material and thickness; The weldment cleared up is placed between two-wheeled; Pressing mechanism applies welding pressure to top electrode wheel, and passes to welding current and form initial solder joint; The pressure of pressing mechanism adjustment top electrode wheel, ensure clamping work pieces, driving stepper motor lower electrode wheel is rotated, and top electrode wheel is servo-actuated, makes welding move the spot pitch of setting; The pressure adjusting that top electrode is taken turns by pressing mechanism is welding pressure, the more logical welding current preset, and forms second each solder joint; By that analogy, the micro-electric resistance welding of multiple spot Small Distance in upright arrangement is completed.

3. a kind of step-by-step movement multiple spot MEMS technology device according to claim 1, is characterized in that: the position that wheel arm is connected with pressing mechanism adds insulating materials and prevents current distributing.