JP7016346B2 - Multi-layer metal welding equipment and its welding method - Google Patents

Description

The present invention relates to a welding device, and more particularly to a welding device for resistance welding of a multilayer metal and a welding method thereof.

Currently, welding methods for high power lithium batteries, hydrogen batteries and fuel cells basically employ ultrasonic welding, and ultrasonic welding belongs to a kind of friction welding. Therefore, in the friction welding process of multi-layer metal such as aluminum foil or copper foil, which has several tens or hundreds of layers, fine metal powder or welding debris is mixed in the sandwiching layer of the multi-layer metal foil due to mutual friction of the metal materials. Since the metal powder or welding debris in the sandwiching layer cannot be cleared directly, it can be applied to battery products as it is. Therefore, during charging / discharging in a battery having an electrolytic solution, the liquid causes a shocking flow due to bubbles inside the battery, and the metal powder or welding debris in the metal foil sandwiching layer flows into the liquid and is contained in the electrolytic solution. When the metal powder or welding debris reaches a certain concentration, the battery causes a short circuit of the electrode plate or an electric leakage phenomenon, which affects the life of the battery.

Japanese Patent CN104981316A discloses a method for manufacturing a laminated metal foil, a method for manufacturing a closed-type battery including the same, and a closed-type battery, which belongs to the field of resistance welding and mainly discloses the following steps. ing. The first step of making a linear cut penetrating along the laminating direction at the welded part of the laminated metal leaf by a cutter and making them adhere to each other, and the electrode for resistance welding are pressed against the welded part and energized. Includes a second step of welding. The method of this patent mainly solves the problem of instability such as welding debris or metal powder or welding explosion in the process of laminating and welding laminated aluminum foil or copper foil. Therefore, the device has drawbacks such as large size, heavy weight, many processes, small nugget, unstable nugget fusion at the cutting edge, and long process cycle time.

In order to avoid the drawbacks and shortcomings existing in the above techniques, the object of the present invention is small size, light weight, excellent functionality, high output, large welder, low cost, excellent product compatibility, and 1. At the same time as welding once, it does not contaminate the electrolytic solution, is good for the work site environment, has a compact structure, is equipped with a fully automatic and smart type welding device, and is maintenance-free during the work process. Provided are a multi-layer metal welding device and a welding method thereof, such as a precision resistance welding device having a long life and not requiring manual operation.

In order to realize the above object, the technical method of the present invention is as follows.
The multi-layer metal welding device includes a frame, an electric cylinder set, a pressure driven mechanism, a tension mechanism, a machine arm assembly, a welding assembly, a power supply assembly, and a workpiece; each frame is an electric cylinder set. , Tension mechanism, machine arm assembly, welded assembly, power supply assembly;
The electric cylinder set further comprises an upper electric cylinder and a lower electric cylinder; an upper electric cylinder is connected to a frame and a pressure driven mechanism, respectively; a lower electric cylinder is connected to a frame and a tensioning mechanism, respectively; a pressure driven mechanism. Is connected to the upper electric cylinder and welded assembly, respectively; the tension mechanism is connected to the frame, lower electric cylinder and workpiece, respectively; the machine arm assembly is connected to the frame; the welded assembly is connected to the frame and pressure driven, respectively. Connected to mechanism, workpiece; power supply assembly is connected to frame, welded assembly, electric cylinder set machine arm assembly, respectively;
The frame comprises a table surface, a post, a guide bar, and a support bar; the table surface is connected to a post, a guide bar, a support bar, a tension mechanism, a welded assembly, and a power supply assembly, respectively; the post is a table surface. The guide bar is connected to the table surface and the electric cylinder set, respectively; the support bar is connected to the table surface and the electric cylinder set, respectively;
The pressure driven mechanism comprises an upper holding plate, an adjusting nut, a lower holding plate, a lower self-locking nut, a plunger and a spring; the upper holding plate has a push rod, a self-locking nut, an adjusting nut, a spring, respectively. Connected to the plunger; the adjustment nut is connected to the upper presser plate and plunger, respectively; the lower presser plate is connected to the upper insulating plate, lower self-locking nut, plunger, and spring, respectively; the lower self-locking nut is connected to the plunger, respectively. Connected to the lower retainer; the plunger is connected to the upper retainer, adjustment nut, lower retainer, lower self-locking nut, and spring, respectively; the spring is connected to the plunger, upper retainer, and lower retainer, respectively;
The tensioning mechanism comprises an L upper nut, an L upper plate, a pull rod, an L lower nut, an L lower plate, an L slide bearing, an L lower holding lid, and an L upper holding lid; the L upper nut Connected to L upper plate and pull rod respectively; L upper plate is connected to workpiece, L upper nut and pull rod respectively; Pull rod is connected to L upper nut, L upper plate, L lower nut, L lower plate and L slide bearing, respectively. , L lower retainer lid, connected to L upper retainer lid; L lower nut is connected to pull rod, L lower plate, respectively; L lower plate is connected to lower electric cylinder shaft, lower electric cylinder G self-lock nut, respectively, Connected to pull rod, L lower nut; L slide bearing is connected to table surface, L upper holding lid, L lower holding lid, respectively; L lower holding lid is connected to table surface, pull rod, L slide bearing, respectively. The L upper retainer lid is connected to the table surface, pull rod, and L slide bearing, respectively;
The machine arm assembly comprises a cross slide table, a rotation axis, a Y axis, and a sandwiching assembly; the cross slide table is connected to the table surface, the rotation axis, and the power supply assembly, respectively; the rotation axis is a cross, respectively. Connected to slide table, Y-axis, power assembly; sandwich assembly is connected to Y-axis; cross slide table further comprises X-axis and Z-axis; X-axis is table surface, Z-axis, respectively. Is connected to; the Z axis is connected to the X axis and the rotation axis, respectively;
The welded assembly comprises an upper insulating plate, a power positive electrode, an extension bar, a positive electrode, a negative electrode, a power negative electrode, and a lower insulating plate; the upper insulating plate is connected to a power positive electrode and a lower holding plate, respectively. The power positive electrode is connected to the upper insulating plate and extension bar, respectively; the extension bar is connected to the power supply positive electrode and positive electrode, respectively; the positive electrode is connected to the extension bar and work, respectively; the negative electrode is connected to the work, respectively. , Connected to the power supply negative electrode; The power supply negative electrode is connected to the negative electrode and the lower insulating plate, respectively; The lower insulating plate is connected to the power supply negative electrode and the table surface, respectively; Connected with;
The power supply assembly further comprises a man-machine interface, an actuator assembly, a controller, a welded power supply, and a driver; the man-machine interface is connected to the controller; the actuator assembly is connected to the controller; The driver is connected to the man-machine interface, actuator assembly, flip flop, welding power supply and driver, respectively; the welding power supply is connected to the actuator assembly and controller, respectively; the driver is connected to the controller;
The man-machine interface comprises a touch screen, a transmission line, and a power port; the touch screen is connected to the transmission line and the power port, respectively; the transmission line is connected to the touch screen and the transistor controller, respectively; Is connected to a power supply that insulates commercial electricity, a touch screen, respectively;
The actuator assembly consists of 10 to 30 relays, the structure, principle, performance, parameters and size of the relays are the same, and the assembly and connection method are the same; the coils of the relays are DC power supply and relay controller, respectively. The contacts of the relay are connected to the main control power supply, driver, welding power supply, power supply negative electrode, and power supply positive electrode, respectively;
The controller further comprises a transistor controller, a relay controller, an A / D module, and a D / A module; the transistor controller is connected to a man-machine interface, a relay controller, a driver, and a welding power supply, respectively; Connected to actuator assembly, welding power supply, transistor controller, A / D module respectively; A / D module connected to welding power supply, relay controller, D / A module respectively; D / A module connected to welding power supply, respectively. Connected to the driver and A / D module;
The driver comprises a power supply, a position servo drive assembly, and a torque servo drive assembly; the power supply is connected to the position servo drive assembly and the torque servo drive assembly, respectively; the position servo drive assembly is a power supply, respectively. Connected to machine arm assembly; torque servo drive assembly is connected to power supply and electric cylinder set respectively; position servo drive assembly consists of 4 sets of position servo drive members, each X-axis motor of cross slide table , Z-axis motor and rotary axis U motor and Y-axis motor; the position servo drive member comprises a position driver and a position servo motor; the position driver is connected to a transistor controller and a position servo motor, respectively. The position servo motor is connected to the position driver, X-axis motor or Z-axis motor or rotary axis motor or Y-axis motor, respectively; the torque servo drive assembly consists of two sets of torque servo members, each with an upper electric motor. Connected to the motor of the cylinder and the motor of the lower electric cylinder; the torque servo member comprises a torque driver and a torque motor; the torque driver is connected to a transistor controller, a D / A module and a torque motor, respectively; Is connected to a torque driver, an upper electric cylinder motor or a lower electric cylinder motor, respectively;
The welding power supply includes a screen grid circuit, a welding circuit set, and a correction circuit set; after the main circuits of the screen grid circuit, the welding circuit set, and the correction circuit set are connected in parallel, the power supply positive electrode, the power supply negative voltage, and the relay are connected, respectively. The flip flop of the flip flop circuit is connected to the diode controller and the cyclist, respectively; the screen grid circuit is connected to the LM-1 in the flip flop, the KT1 in the psyllista, and the free wheel. It comprises a diode, an inductor, a diode, a CN1 in a storage assembly, and a high voltage storage; the LM-1 in the flipflop is connected to the transistor controller and the KT1 in the thyristor, respectively; the KT1 in the thyristor is a freewheel diode. After being connected in parallel, they are connected to the power supply positive, ZK1 in the relay, and the inductor; They are connected to the KT1, freewheel diode, diode, and high voltage power storage in the thylister, respectively; the diode is connected to the inductor, high voltage power storage, and CN1 in the power storage assembly, respectively; the CN1 in the power storage assembly is in the power supply negative and relay, respectively. ZK1, connected to a diode; high voltage storage is connected to an inductor, a diode, and a negative power supply, respectively;
The weld circuit set consists of 1 to 10 weld branches with exactly the same structure, principle and parameters; the weld branch comprises LM-2 in a flip-flop, KT2 in a thyristor, and CN2 in a power storage assembly. LM-2 in the flip-flop is connected to the transistor controller and KT2 in the thyristor, respectively; KT2 in the thyristor is connected to LM-2 in the flip-flop and CN2 in the storage assembly; CN2 in the storage assembly is connected to the thyristor, respectively. KT2 in, connected to the power supply negative electrode;
The correction circuit set consists of 1 to 10 correction branches having exactly the same structure, principle, and parameters; the correction branch includes LM-3 in a flip-flop, KT3 in a thyristor, and CN3 in a power storage assembly; The LM-3 in the flip-flop is connected to the transistor controller and the KT3 in the thyristor, respectively; the KT3 in the thyristor is connected to the LM-3 in the flip-flop and the CN3 in the storage assembly; the CN3 in the storage assembly is connected to the thyristor, respectively. KT3, connected to power supply negative electrode;
The electricity storage assembly further comprises a capacitor, a feedback resistor, a charging power source, an FD3 in a unloading resistor, a ZK3 in a fuse switch, an RG3 in an amplifier, and a unloading controller; a capacitor, a feedback resistor, a charging. After the power supplies are connected in parallel, they are connected to the FD3 in the unloading resistor, the fuse switch, the KT3 in the thyristor, and the ZK3 in the power supply negative axis, respectively; the FD3 in the unloading resistor is the KT3 in the thyristor, the capacitor, the feedback resistor, and the charging power supply, respectively. , ZK3 in the fuse switch, RG3 in the amplifier; ZK3 in the fuse switch, RG3 in the amplifier are connected in parallel and then connected to the FD3 in the unloading resistor and the negative voltage of the power supply, respectively; the unloading controller is D / Connected to A module, amplifier, DC power supply, power supply negative side;
The principle, structure, and dimension chain of the positive and negative electrodes are the same, and they are assembled and mirror-imaged on the same axis. That is, the outer circle M of the positive and negative electrodes is coaxial and spherical SR. N is coaxial;
The size of the round angle C of the positive electrode is 10 to 30 times the size of H; the height of the spherical SR of the positive electrode is 0.2 times the pressure contact thickness of the work; the diameter of the spherical SR of the positive electrode is the work thickness. 10 to 100 times; the contour line ΦR size range of the positive electrode is 1/2 to 3/4 of the diameter ΦD of the positive electrode, and the contour line ΦR is 1 to 5; that is, outside the spherical SR. The diameter size of the contour line V is smaller than the diameter size of the inner contour line W of the round angle C; when there are 1 to 100 spherical SRs of the positive electrode and one spherical SR, the axis and the outside of the spherical SR When the circle M is coaxial and there are two or more spherical SRs, the center line of the spherical SR is placed on the contour line ΦR, and is uniformly arranged on the contour line ΦR, and the outer circle X of the spherical SR. And not orthogonal to the outer circle X of one adjacent spherical SR, and the distance between X and X must not be less than 2MM; in one contour line, multiple spherical SRs as required. If it cannot be placed, after arranging the contour lines between 1/2 to 3/4 of the diameter ΦD of the positive electrode, the spherical SR can be placed on each of the contour lines.

The positive electrode and the negative electrode may be circular or square, but even if they are circular or square, the welded surfaces of the positive electrode and the negative electrode both have a discharge protrusion H, and the protrusion H and a flat surface are formed. All of the connections are smooth curved surfaces.

The structure, principle, dimension chain, performance and parameters of the upper electric cylinder and the lower electric cylinder are perfectly matched, the pressure of the upper electric cylinder is 10 to 15000 kg, the upper electric cylinder is a torque motor with a brake, The motor output is 1 to 10 kW.

What is adopted in the screen grid circuit, welding circuit set, and correction circuit set is a parallel connection circuit structure and a dendritic discharge method. Any discharge circuit can be selected and used alone or in combination, and can be timely and intermittently discharged; the screen grid circuit is a combination of high and low voltage. It is a power supply, and the switching between high and low voltage is automatically switched by a diode; the welding circuit set and the correction circuit set are compatible, that is, the welding circuit set and the correction circuit set can be used as a welding module for correction. It may be used as a module.

The charging voltage and discharging voltage of the high voltage capacitor are larger than 500V.

The electricity storage assembly is 1 to 20 circuits; each circuit may be used alone, in parallel, or with intermittent discharge; the electricity storage assembly may be charged independently. , May be charged at the same time.

The work is an aluminum foil, copper foil, aluminum strip, copper strip or aluminum base material surface treatment material or copper base material surface treatment material between 2 layers to 500 layers, and the base material thickness is 0.006MM to 1MM. Between.

The structures and principles of the upper electric cylinder and the lower electric cylinder are the same, and they are mirror images and coaxially arranged.

The welding method of the multi-layer metal welding equipment includes the following steps.
A, Preparation step: Based on the technical requirements of the work, the electrode shapes of the positive and negative electrodes are selected, and the material resistance value of the work, the number of layers to be welded and the resistance value, and the oxide film resistance value of different layers are calculated. Then, it is decided whether to perform center point welding or through welding; then, based on the welding area required by the technical requirements, the ΦD size of the positive and negative electrodes is selected, and at the same time, the spherical SR and the contour line ΦR are selected. Calculate the quantity and placement quantity, the nugget quantity formed by the weld nugget; finally, the yield caused by the high heat of the torque and workpiece of the electric cylinder set based on the difference in material and the cold working hardening characteristics of the colored metal. After calculating the points and hardness reduction values and adjusting the pressure of the spring of the pressure driven mechanism, attach the positive and negative electrodes used in welding, and then adjust the axial cross-sectional coordinates of the negative electrode to make the positive electrode. After making the negative electrode coaxial with the negative electrode, fix the negative electrode and then rotate it at the rotation angle of the negative electrode to make the N-axis line of the negative electrode and the N-axis line of the positive electrode coaxial, and of the negative electrode. Tightening the rotating bolt prevents the negative electrodes from rattling up, down, left, right, front and back; at this time, preparation step A is completed and the next step, self-check step B. Move to;
B, self-check step B: After the preparatory step is completed by step A, the multi-layer metal welding equipment moves to self-check step B; first, it is inspected whether the emergency stop and warning are valid, and if. If enabled, the controller sends an audio / optical warning signal to the actuator assembly and at the same time sends a fault location and fault handling method to the touch screen over the transmission line; then is the motion pair for each axis in the origin position? Check if it is not, and if it is not in the origin position, the touch screen will show which axis is not in the origin position and "whether to return to the origin position based on the specified path and axial motion order". Finally, after the controller initialization is completed and the self-check is passed, "Please select the serial number of the welded workpiece" is displayed on the touch screen, and if the already welded workpiece is displayed. If selected, the controller will automatically jump to automatic step E and start the automatic circulation welding operation; if the selected work is a new workpiece, the controller will select the dimension control / parameter setting menu. Automatically jumps to the screen; at this time, self-check step B is completed and the process proceeds to setting step C or automatic step E;
C, Setting step: After the self-check step process in step B, the controller automatically jumps to setting step C and switches the touch screen screen to the dimension control / parameter setting menu; then in preparation step A. Based on the calculated data, the parameters are written to the machine arm part, preload part, pre-tension part, discharge part, charging part, and unloading part, respectively; of these, the machine arm part is the positive electrode after taking out the work from the feeding rack. Prepare for welding by placing it at the welding coordinate between the negative electrode and the negative electrode, and after the welding is completed, further transfer the work to the discharge rack; during this time, the machine arm X-axis, Y-axis, Z-axis, rotary axis, upper electric cylinder. , The operating speed of the lower electric cylinder can be adjusted and set online, but the adjusted and set parameters are manually X-axis, Y-axis, Z-axis, rotary axis, upper electric cylinder until the process requirement is reached. , The operating speed of the lower electric cylinder, interlocking interpolation, and sizing test of software interruption are repeated, and at the same time, the machine arm automatically determines the presence / absence of workpieces in the feed rack and discharge rack, and the order of picking up and leaving. be able to;
The preload section uses the upper electric cylinder as a power source to drive the upper electric cylinder, pressure driven mechanism, upper insulating plate of the welded assembly, power supply positive electrode, extension bar, and positive electrode so as to move toward the work. Pressure is applied to the work as a reference for fixing the negative electrode, but the magnitude of the pressure can be corrected online on the touch screen, and the magnitude of the pressure value is automatically triggered and adjusted in real time. At the same time, after feeding the feedback signal into the transistor controller, the transistor controller further compares it with the pressure value written on the touch screen, and if the feedback value and the write pressure value are equal, the brake of the upper electric cylinder is released. Then, the upper electric cylinder stops operation; if the feedback value is larger than the writing pressure value, the upper electric cylinder moves in the opposite direction to the work until the feedback value becomes equal to the writing pressure value, and the upper part. The brake of the electric cylinder is released and the upper electric cylinder is stopped. Otherwise; the opposite is true; the pre-tension part drives the lower electric cylinder to move the tension mechanism toward the work. At the same time, pressure is applied to the work as a reference standard for fixing the work, but the magnitude of the pressure can be corrected online on the touch screen, and the magnitude of the pressure value is automatically triggered in real time. And adjust; at this time, the parameter setting and adjustment of each axis of the motion pair are completed, and the process proceeds to the charge and discharge parameter setting; that is, the screen grid circuit is set first, that is, the oxide film thickness of the workpiece to be welded. And the breakdown voltage of the oxide film is calculated based on the difference in the number of layers, but the breakdown pressure is the charging pressure of the high voltage storage device, and the selection range of the charging voltage is 500 to 5000V, and then the storage assembly. The charging voltage of CN1 in is further set, but the selection range of charging voltage is 20 to 100V, the calculation method is the preheating time and preheating temperature of the work, and the higher the voltage, the longer the preheating time; After setting the welding circuit set, that is, selecting the welding power of the work, that is, calculating the welding power and welding current based on the thickness, number of layers, and welding area of each layer of the work, further welding power and welding. The quantity of the weld branch is selected based on the current, the charging voltage of the CN2 set in the electricity storage assembly is determined, and the weld branch is Determine whether to discharge at the same time or at intermittent discharge or timing; then write into the controller through the touch screen, but the range of the written charge voltage is 0 to 50V; finally, set the correction circuit set. However, the correction branch charging voltage is calculated by dividing the number of correction branches from the voltage value to charge each correction branch and writing it in the controller on the touch screen, but the range of the written charging voltage is 0 to 50V; At this time; the process of setting step C is completed, and the process proceeds to automatic step D;
D, automatic step: After the process is completed in the setting step of step C, the controller automatically jumps to automatic step D, waits for the automatic operation command from the operator, and the operator presses the automatic operation button on the touch screen. Then, the device automatically operates; first, when the controller receives an automatic operation command from the touch screen, the controller has the X-axis, Y-axis, Z-axis, rotary axis, upper electric cylinder, and lower electric cylinder of the machine arm. After sending the automatic reset operation and completing the reset of each axis, the clamp of the holding assembly opens, the L upper plate opens, the unloading relay sucks, and whether there is a work in the feed rack, which rack If there is no work in, the machine arm will automatically transition to the standby routine, and if there is work on the feed rack, the controller will pick it up in which pick-up rack. At this time, the X-axis, Y-axis, Z-axis, and rotation axis pick up the workpiece up to the specified coordinates based on the operating distance and operating speed of the position data control table. After that, the workpiece is sent into the positioning clamp of the negative electrode at the welding position, and after placing the workpiece on the positioning clamp, the positioning clamp sends a workpiece arrival command to the controller, at which time the controller is sent to the sandwiching assembly. While sending a release command, the arm Z-axis is retracted to the origin position and waits; after receiving the command that the Z-axis has arrived at the origin, the controller sends a compression command for the lower electric cylinder and the lower electric cylinder. Drives the L top plate to crimp to the workpiece, of which the pressure on the L top plate is the torque signal that has been set on the touch screen; the controller simultaneously has the screen grid circuit, welding circuit set, and correction circuit. A charging command is also sent to the group, and whether or not the charging voltage of the capacitor matches the charging data written on the touch screen is compared in real time, and if they match, the charging completion command is sent to the controller. At the same time, when it detects that the pressure values of the L upper plate and the upper electric cylinder have already reached the set pressure value, the controller sends a welding command; then, based on the discharge timing set on the touch screen. , That is, the high voltage storage unit of the screen grid circuit is discharged first, and the storage voltage of the high voltage storage unit is the CN1 in the storage assembly. When the voltage falls below the storage voltage, the diode conducts, but at this time, CN1 in the high-voltage storage unit and the storage assembly discharges at the same time;
Of these, the discharge timing of the correction circuit set is as follows. When the controller detects the discharge completion signal of the welded circuit set, it immediately analyzes whether the power, resistance value, voltage, and current meet the setting requirements for the welded circuit set by averaging; if not. , The controller calculates the degree of error value generated in the welding circuit set, and which correction branch or parallel connection value of which correction branch in the correction circuit set is close to or the same as the error value, and then the welding power. Perform a secondary discharge to make up for the shortage of
When the controller detects the secondary discharge completion signal; the controller first sends a unloading command to the relay, then a start command for the upper electric cylinder and the lower electric cylinder, and the controller sends a start command for the lower electric cylinder and the upper electric cylinder. After detecting the arrival signal, the Z-axis arm is further extended to reach the coordinates of the work, and then the holding assembly holds the work and sends it to the empty position of the discharge port; then the machine arm reaches the initial position. Returning, at this time, the first work cycle is completed, but if the work is continued, the device repeats the work; if the end command is sent by human involvement, automatic step D is completed. Then move to unloading step E;
E, unloading step: After the automatic step processing is completed in step D, the controller sends an off command to the servo to detect whether the relay is open and whether the capacitor has completed discharging, and then the power supply. Automatically turns off; the controller automatically turns off the power and at the same time turns off the power supply of the controller itself.

Compared with the prior art, it has the following beneficial effects.
1. Since the present invention employs a multi-network dendritic discharge structure of high and low pressure power supplies, the welding equipment has three lines as one process and is molded in one step; Welding equipment is small, light weight, excellent in functionality, high output, low cost, and compact structure.

2. In the present invention, rolling, tension and main body welding technology and multi-network dendritic discharge principle and structure of high and low pressure power supply are adopted by electric cylinder of several tons class, so that the welding nugget has excellent physical dynamic performance. And it has chemical stability, excellent use effect, long life, and large nugget.

3. No treatment is required on the surface of the product to be welded in the present invention, and particles or powder and welding debris are not generated during the welding process. Therefore, the product manufactured by this device does not contaminate the electrolytic solution and has the advantage of being good for the work site environment.

4. Since the present invention employs fully automatic smart control technology, the present invention does not require human involvement and operation during operation, and there is no problem in product quality due to human factors. .. Therefore, the products produced by this device are stable, highly reliable, and have excellent consistency.

The present invention has a total of 9 drawings. this house,
FIG. 1 is a flowchart of a multilayer metal welding apparatus. FIG. 2 is a schematic plan view of a multilayer metal welding apparatus. FIG. 3 is a schematic view of a cross section taken along the line AA of FIG. FIG. 4 is a schematic diagram on the right side of FIG. FIG. 5 is a schematic diagram of a dendritic discharge waveform. FIG. 6 is a schematic front view of the electrodes of the multilayer metal welding apparatus. FIG. 7 is a schematic plan view of FIG. FIG. 8 is an enlarged view of FIG. 3B. FIG. 9 is a schematic view of an electrical system portion of a multilayer metal welding device.

The present invention will be described in more detail below with reference to the drawings.

The multilayer metal welding apparatus includes a frame, an electric cylinder set, a pressure driven mechanism, a tension mechanism, a machine arm assembly, a welding assembly, a power supply assembly 3, and a work 62. The frame is connected to the electric cylinder set, the tension mechanism, the machine arm assembly, the welding assembly, and the power supply assembly 3, respectively. The electric cylinder set further includes an upper electric cylinder 4 and a lower electric cylinder 5. The upper electric cylinder 4 is connected to a frame and a pressure driven mechanism, respectively. The lower electric cylinder 5 is connected to the frame and the tension mechanism, respectively. The pressure driven mechanism is connected to the upper electric cylinder 4 and the welded assembly, respectively. The tension mechanism is connected to the frame, the lower electric cylinder 5, and the work 62, respectively. The machine arm assembly is connected to the frame. The welded assembly is connected to the frame, the pressure driven mechanism and the work 62, respectively. The power supply assembly 3 is connected to the frame, the welded assembly, the electric cylinder set, and the machine arm assembly, respectively.
The frame includes a table surface 1, a post 2, a guide bar 10, and a support bar 17. The table surface 1 is connected to a post 2, a guide bar 10, a support bar 17, a tension mechanism, a welded assembly, and a power supply assembly 3, respectively. The post 2 is connected to the table surface 1. The guide bar 10 is connected to the table surface 1 and the electric cylinder set, respectively. The support bar 17 is connected to the table surface 1 and the electric cylinder set, respectively.
The pressure driven mechanism includes an upper holding plate 48, an adjusting nut 49, a lower holding plate 52, a lower self-locking nut 54, a plunger 40, and a spring 51. The upper holding plate 48 is connected to a push rod, a self-lock nut, an adjusting nut 49, a spring 51, and a plunger 40, respectively. The adjusting nut 49 is connected to the upper holding plate 48 and the plunger 40, respectively. The lower holding plate 52 is connected to the upper insulating plate 53, the lower self-lock nut 54, the plunger 40, and the spring 51, respectively. The lower self-lock nut 54 is connected to the plunger 40 and the lower holding plate 52, respectively. The plunger 40 is connected to the upper holding plate 48, the adjusting nut 49, the lower holding plate 52, the lower self-locking nut 54, and the spring 51, respectively. The spring 51 is connected to the plunger 40, the upper holding plate 48, and the lower holding plate 52, respectively.
The tension mechanism is L upper nut 58, L upper plate 59, pull rod 60, L lower nut 61, L lower plate 66, L slide bearing 67, L lower holding lid 68, and L upper holding lid 69. And. The L upper nut 58 is connected to the L upper plate 59 and the pull rod 60, respectively. The L upper plate 59 is connected to the work 62, the L upper nut 58, and the pull rod 60, respectively. The pull rod 60 is connected to the L upper nut 58, the L upper plate 59, the L lower nut 61, the L lower plate 66, the L slide bearing 67, the L lower holding lid 68, and the L upper holding lid 69, respectively. The L lower nut 61 is connected to the pull rod 60 and the L lower plate 66, respectively. The L lower plate 66 is connected to the shaft of the lower electric cylinder, the G self-lock nut of the lower electric cylinder, the pull rod 60, and the L lower nut 61, respectively. The L slide bearing 67 is connected to the table surface 1, the L upper holding lid 69, and the L lower holding lid 68, respectively. The L lower holding lid 68 is connected to the table surface 1, the pull rod 60, and the L slide bearing 67, respectively. The L upper holding lid 69 is connected to the table surface 1, the pull rod 60, and the L slide bearing 67, respectively.
The machine arm assembly includes a cross slide table 6, a rotating shaft 7, a Y-axis 8, and a holding assembly 9. The cross slide table 6 is connected to the table surface 1, the rotating shaft 7, and the power supply assembly 3, respectively. The rotating shaft 7 is connected to the cross slide table 6, the Y-axis 8, and the power supply assembly 3, respectively. The sandwiching assembly 9 is connected to the Y-axis 8. The cross slide table 6 further comprises an X-axis and a Z-axis. The X-axis is connected to the table surface 1 and the Z-axis, respectively. The Z axis is connected to the X axis and the rotation axis 7, respectively.
The welded assembly includes an upper insulating plate 53, a power supply positive electrode 55, an extension bar 56, a positive electrode 57, a negative electrode 63, a power supply negative electrode 64, and a lower insulating plate 65. The upper insulating plate 53 is connected to the power supply positive electrode 55 and the lower holding plate 52, respectively. The power supply positive electrode 55 is connected to the upper insulating plate 53 and the extension bar 56, respectively. The extension bar 56 is connected to the power supply positive electrode 55 and the positive electrode 57, respectively. The positive electrode 57 is connected to the extension bar 56 and the work 62, respectively. The negative electrode 63 is connected to the work 62 and the power supply negative electrode 64, respectively. The power supply negative electrode 64 is connected to the negative electrode 63 and the lower insulating plate 65, respectively. The lower insulating plate 65 is connected to the power supply negative electrode 64 and the table surface 1, respectively.
The work 62 is connected to the positive electrode 57, the negative electrode 63, and the L upper plate 59, respectively.
The power supply assembly 3 further comprises a man-machine interface 124, an actuator assembly 125, a controller 128, a welded power supply 126, and a driver 127. The man-machine interface 124 is connected to the controller 128. The actuator assembly 125 is connected to the controller 128. The driver 128 is connected to the man-machine interface 124, the actuator assembly 125, the flip-flop 136, the welding power supply 126, and the driver 127, respectively. The welding power supply 126 is connected to the actuator assembly 125 and the controller 128, respectively. The driver 127 is connected to the controller 128.
The man-machine interface 124 includes a touch screen 130, a transmission line 129, and a power port. The touch screen 130 is connected to the transmission line 129 and the power port, respectively. The transmission line 129 is connected to the touch screen 130 and the transistor controller 131, respectively. The power port is connected to a touch screen 130, which is a power source that insulates from commercial electricity.
The actuator assembly 125 is composed of 10 to 30 relays 135, and the structures, principles, performances, parameters, and sizes of the relays 135 are the same, and the assembly and connection methods are the same. The coils of the relay 135 are connected to the DC power supply and the relay controller 132, respectively, and the contact portions of the relay 135 are connected to the main control power supply, the driver 127, the welding power supply 126, the power supply negative electrode 64, and the power supply positive electrode 55, respectively.
The controller 128 further includes a transistor controller 131, a relay controller 132, an A / D module 133, and a D / A module 134. The transistor controller 131 is connected to a man-machine interface 124, a relay controller 132, a driver 127, and a welding power supply 126, respectively. The relay controller 132 is connected to the actuator assembly 125, the welding power supply 126, the transistor controller 131, and the A / D module 133, respectively. The A / D module 133 is connected to the welding power supply 126, the relay controller 132, and the D / A module 134, respectively. The D / A module 134 is connected to the welding power supply 126, the driver 127, and the A / D module 133, respectively.
The driver 127 includes a power supply, a position servo drive assembly, and a torque servo drive assembly. The power supply is connected to the position servo drive assembly and the torque servo drive assembly, respectively. The position servo drive assembly is connected to the power supply and the machine arm assembly, respectively. The torque servo drive assembly is connected to the power supply and the electric cylinder set, respectively. The position servo drive assembly consists of four sets of position servo drive members, which are connected to the X-axis motor, the Z-axis motor, the rotary axis 7 motor, and the Y-axis 8 motor of the cross slide table 6, respectively. The position servo drive member includes a position driver 139 and a position servomotor 73. The position driver 139 is connected to the transistor controller 131 and the position servomotor 73, respectively, and the position servomotor 73 is connected to the position driver 139, the X-axis motor or the Z-axis motor, the rotary axis 7 motor, or the Y-axis 8 motor, respectively. To. The torque servo drive assembly consists of two sets of torque servo members, which are connected to the motor of the upper electric cylinder 4 and the motor of the lower electric cylinder 5, respectively. The torque servo member includes a torque driver 141 and a torque motor 11. The torque driver 141 is connected to the transistor controller 131, the D / A module 134, and the torque motor 11, respectively. The torque motor 11 is connected to the torque driver 141, the upper electric cylinder 4 motor, or the lower electric cylinder 5 motor, respectively.
The welding power supply 126 includes a screen grid circuit 154, a welding circuit set 155, and a correction circuit set 156. After the main circuits of the screen grid circuit 154, the welding circuit set 155, and the correction circuit set 156 are connected in parallel, they are connected to the normally closed contacts of ZK1 in the power supply positive electrode 55, the power supply negative electrode 64, and the relay 135, respectively, and the flip-flop of the flip-flop circuit is flip-flop. The circuit 136 is connected to the transistor controller 131 and the thylister 137, respectively.
The screen grid circuit 154 includes an LM-1 in a flip-flop 136, a KT1 in a thyristor 137, a freewheel diode 157, an inductor 143, a diode 151, a CN1 in a storage assembly 138, and a high voltage capacitor 98. .. The LM-1 in the flip-flop 136 is connected to the transistor controller 131 and the KT1 in the thyristor 137, respectively. The KT1 in the thyristor 137 is connected in parallel with the freewheel diode 157, and then connected to the power supply positive electrode 55, the ZK1 in the relay 135, and the inductor 143, respectively. The freewheel diode 157 is connected in parallel with the KT1 in the thyristor 137, and then connected to the power supply positive electrode 55, the ZK1 in the relay 135, and the inductor 143, respectively. The inductor 143 is connected to the KT1 in the thyristor 137, the freewheel diode 157, the diode 151, and the high voltage capacitor 98, respectively. The diode 151 is connected to the inductor 143, the high voltage capacitor 98, and the CN1 in the storage assembly 138, respectively. The CN1 in the power storage assembly 138 is connected to the power supply negative electrode 64, the ZK1 in the relay 135, and the diode 151, respectively. The high voltage capacitor 98 is connected to the inductor 143, the diode 151, and the power supply negative electrode 64, respectively.
The welding circuit set 155 consists of 1 to 10 welding branches having exactly the same structure, principle, and parameters. The weld branch comprises LM-2 in flip-flop 136, KT2 in thyristor 137, and CN2 in storage assembly 138. The LM-2 in the flip-flop 136 is connected to the transistor controller 131 and the KT2 in the thyristor 137, respectively. The KT2 in the thyristor 137 is connected to the LM-2 in the flip-flop 136 and the CN2 in the storage assembly 138, respectively. The CN2 in the power storage assembly 138 is connected to the KT2 in the thyristor 137 and the power supply negative electrode 64, respectively.
The correction circuit set 156 consists of 1 to 10 correction branches having completely the same structure, principle, and parameters. The correction branch comprises LM-3 in flip-flop 136, KT3 in thyristor 137, and CN3 in storage assembly 138. The LM-3 in the flip-flop 136 is connected to the transistor controller 131 and the KT3 in the thyristor 137, respectively. The KT3 in the thyristor 137 is connected to the LM-3 in the flip-flop 136 and the CN3 in the storage assembly 138, respectively. The CN3 in the power storage assembly 138 is connected to the KT3 in the thyristor 137 and the power supply negative electrode 64, respectively.
The electricity storage assembly 138 further comprises a capacitor 149, a feedback resistor 148, a charging power source 147, an FD3 in the unloading resistor 150, a ZK3 in the fuse switch 146, an RG3 in the amplifier 145, and a unloading controller 144. After being connected in parallel to the capacitor 149, the feedback resistor 148, and the charging power supply 147, they are connected to the FD3 in the unloading resistor 150, the fuse switch 146, the KT3 in the thyristor 137, and the ZK3 in the power supply negative electrode 64, respectively. The FD3 in the unloading resistor 150 is connected to the KT3 in the thyristor 137, the capacitor 149, the feedback resistor 148, the charging power supply 147, the ZK3 in the fuse switch 146, and the RG3 in the amplifier 145, respectively. The ZK3 in the fuse switch 146 and the RG3 in the amplifier 145 are connected in parallel, and then connected to the FD3 in the unloading resistor 150 and the power supply negative electrode 64, respectively. The unloading controller 144 is connected to the D / A module 134, the amplifier 145, the DC power supply, and the power supply negative electrode 64, respectively.
The principle, structure, and dimension chain of the positive electrode 57 and the negative electrode 63 are the same, and they are assembled on the same axis and arranged in a mirror image. That is, the outer circle M is coaxial with the positive electrode 57 and the negative electrode 63. , N of the spherical surface SR is coaxial. The size of the round angle C of the positive electrode 57 is 10 to 30 times that of the H size. The height of the spherical surface SR of the positive electrode 57 is 0.2 times the pressure contact thickness of the work 62. The diameter of the spherical SR of the positive electrode 57 is 10 to 100 times the work thickness. The contour line ΦR size range of the positive electrode 57 is 1/2 to 3/4 of the diameter ΦD of the positive electrode 57, and the contour line ΦR is 1 to 5. That is, the diameter size of the outer contour line V of the spherical surface SR is smaller than the diameter size of the inner contour line W of the round angle C. The positive electrode 57 has 1 to 100 spherical SRs, and when the spherical SR is 1, the axis of the spherical SR and the outer circle M are coaxial, and when the spherical SR is 2 or more, the spherical SR of the spherical SR The center line is placed on the contour line ΦR and is uniformly arranged on the contour line ΦR, and the outer circle X of the spherical SR and the outer circle X of one adjacent spherical SR are not orthogonal to each other, and X and X The interval with and should not be less than 2MM. If it is not possible to place multiple spherical SRs on one contour line as required, place the contour lines between 1/2 to 3/4 of the diameter ΦD of the positive electrode 57, and then place one each. The spherical SR can be arranged on the contour line.

The positive electrode 57 and the negative electrode 63 may be circular or square, but even if they are circular or square, the welded surfaces of the positive electrode 57 and the negative electrode 63 both have discharge protrusions H, and the protrusions. The connection between H and the plane is a smooth curved surface connection.

The structure, principle, dimension chain, performance and parameters of the upper electric cylinder 4 and the lower electric cylinder 5 are completely the same, the pressure of the upper electric cylinder 4 is 10 to 15000 kg, and the upper electric cylinder 4 has a torque with a brake. It is a motor, and the motor output is 1 to 10 kW.

What is adopted in the screen grid circuit 154, the welding circuit set 155, and the correction circuit set 156 is a parallel connection circuit structure and a dendritic discharge method. Arbitrary discharge circuits can be selected according to the required current, and they may be used alone or in combination, and may be intermittently discharged and discharged at intervals. The screen grid circuit 154 is a superposed power supply in which high and low voltage are combined, and high and low voltage power supply switching is automatically switched by the diode 151. The welding circuit set 155 and the correction circuit set 156 are compatible, that is, the welding circuit set 155 and the correction circuit set 156 may be used as a welding module or a correction module.

The charge voltage and discharge voltage of the high voltage capacitor 98 are larger than 500 V.

The power storage assembly 138 is 1 to 20 circuits. Each circuit may be used alone, in parallel, or in intermittent discharge. The power storage assembly 138 may be charged independently or simultaneously.

The work 62 is an aluminum foil, copper foil, aluminum strip, copper strip or aluminum base material surface treatment material or copper base material surface treatment material between two or 500 layers, and the base material thickness is 0.006MM to 1MM. Between.

The structures and principles of the upper electric cylinder 4 and the lower electric cylinder 5 are the same, and they are mirror images and coaxially arranged.

The welding method of the multi-layer metal welding equipment includes the following steps.
A, Preparation step: Based on the technical requirements of the work 62, the electrode shapes of the positive electrode 57 and the negative electrode 63 are selected, and the material resistance value of the work 62, the number of layers to be welded and the resistance value, and the oxide film of different layers are selected. Calculate the resistance value to determine whether to use center point welding or through welding. After that, the ΦD size of the positive electrode 57 and the negative electrode 63 is selected based on the welding area of the technical requirement, and at the same time, the spherical SR, the contour line ΦR quantity and the arrangement quantity, and the nugget quantity formed by the welding nugget are calculated. Finally, based on the difference in materials and the cold working hardening characteristics of colored metals, the torque of the electric cylinder set and the yield point and hardness reduction value generated by the work 62 receiving high heat are calculated, and the spring of the pressure driven mechanism After adjusting the pressure of 51, the positive electrode 57 and the negative electrode 63 used for welding are attached, and then the axial cross-sectional coordinates of the negative electrode 63 are adjusted so that the positive electrode 57 and the negative electrode 63 are coaxial. The negative electrode 63 is fixed and then rotated at the rotation angle of the negative electrode 63 so that the N-axis line of the negative electrode 63 and the N-axis line of the positive electrode 57 are coaxial and the rotating bolt of the negative electrode 63 is tightened. By doing so, the negative electrode 63 is prevented from rattling up, down, left, right, front, and back. At this time, the preparation step A is completed, and the process proceeds to the next step, the self-check step B.
B, Self-check step B: After the preparation step is completed by step A, the multilayer metal welding apparatus shifts to the self-check step B. First, the emergency stop and warning are checked for validity, and if so, the controller 128 sends an audio / optical warning signal to the actuator assembly 125 and at the same time to the touch screen 130 through transmission line 129. The failure position and failure handling method are sent. Next, it is inspected whether the motion pair of each axis is in the origin position, and if it is not in the origin position, the touch screen 130 displays which axis is not in the origin position and "prescribed path and axis". Whether to return to the origin position based on the movement order "is displayed. Finally, after the initialization of the controller 128 is completed and the self-check is passed, the message "Please select the serial number of the welded workpiece" is displayed on the touch screen 130, and if the already welded workpiece is selected. In that case, the controller 128 automatically jumps to the automatic step E and starts the automatic circulation welding operation. If the selected work is a new work, the controller 128 automatically jumps to the dimension control / parameter setting menu screen. At this time, the self-check step B is completed, and the process proceeds to the setting step C or the automatic step E.
C, Setting step: After the self-check step process in step B, the controller 128 automatically jumps to the setting step C and switches the screen of the touch screen 130 to the sizing control / parameter setting menu. Then, based on the data calculated in the preparation step A, the parameters are written in the machine arm unit, the preload unit, the preload unit, the discharge unit, the charging unit, and the unloading unit, respectively.
Of these, the machine arm portion takes out the work 62 from the feeding rack and then places it at the welding coordinates between the positive electrode 57 and the negative electrode 63 to prepare for welding. After the welding is completed, the work 62 is further placed in the discharge rack. Transfer. During this time, the operating speeds of the machine arm X-axis, Y-axis, Z-axis, rotary axis 7, upper electric cylinder 4, and lower electric cylinder 5 can be adjusted and set online, but the adjusted and set parameters are the process. Until the request is reached, the X-axis, Y-axis, Z-axis, rotary axis 7, upper electric cylinder, lower electric cylinder operating speed, interlocking interpolation, and software interruption sizing test are repeated manually, and at the same time, the machine arm Furthermore, it is possible to automatically determine the presence / absence of workpieces in the feed rack and the discharge rack, and the order of picking up and leaving. The preload portion uses the upper electric cylinder 4 as a power source to move the upper electric cylinder, the pressure driven mechanism, the upper insulating plate 53 of the welded assembly, the power supply positive electrode 55, the extension bar 56, and the positive electrode 57 toward the work 62. As a reference standard for fixing the negative electrode 63, pressure is applied to the work 62, but the magnitude of the pressure can be corrected online on the touch screen 130 and the magnitude of the pressure value. Automatically triggers and adjusts in real time, and at the same time, after feeding back the feedback signal into the transistor controller 131, the transistor controller 131 further compares with the pressure value written on the touch screen 130, and if the feedback value and the write pressure value are different. If they are equal, the brake of the upper electric cylinder 4 is released, and the upper electric cylinder 4 stops the operation. If the feedback value is greater than the write pressure value, the upper electric cylinder 4 moves in the opposite direction to the work 62 until the feedback value becomes equal to the write pressure value, and the brake of the upper electric cylinder 4 is released. The upper electric cylinder 4 stops operation. Otherwise, the opposite is true. The pre-tension portion drives the lower electric cylinder 5 to move the tension mechanism toward the work 62, and applies pressure to the work 62 as a reference for fixing the work 62. Can be modified online on the touch screen 130, and the magnitude of the pressure value is automatically triggered and adjusted in real time. At this time, the parameter setting and adjustment of each axis of the motion pair are completed, and the process shifts to the charging and discharging parameter setting. That is, the screen grid circuit 154 is first set, that is, the breakdown voltage of the oxide film is calculated based on the difference in the oxide film thickness and the number of layers of the workpiece 62 to be welded, and the breakdown voltage is that of charging the high voltage power storage device 98. As for the voltage, the selection range of the charging voltage is 500 to 5000V, and then the charging voltage of CN1 in the storage assembly 138 is further set, but the selection range of the charging voltage is 20 to 100V, and the calculation method is the work. It is the preheating time and the preheating temperature of 62, and the higher the voltage, the longer the preheating time. Next, after setting the welding circuit set 155, that is, selecting the welding power of the work 62, that is, calculating the welding power and the welding current based on the thickness, the number of layers, and the welding area of each layer of the work 62, Further, the quantity of the weld branch is selected based on the welding power and the welding current, the charging voltage of the CN2 set in the storage assembly 138 is determined, and the weld branch is discharged at the same time, or intermittently or at the timing. Confirm. After that, it is written in the controller 128 through the touch screen 130, and the range of the written charging voltage is 0 to 50V. Finally, the correction circuit set 156 is set, and the correction branch charging voltage is written by dividing the number of correction branches from the voltage value to charge each correction branch and writing in the controller 128 on the touch screen 130. The charging voltage range is 0 to 50V. At this time, the process proceeds to the automatic step D in which the processing of the setting step C is completed.
D, automatic step: After the process is completed in the setting step of step C, the controller 128 automatically jumps to the automatic step D, waits for the automatic operation command from the operator, and the operator presses the automatic operation button on the touch screen 130. When you press, the device will operate automatically. First, when the controller 128 receives an automatic operation command from the touch screen 130, the controller 128 automatically resets the X-axis, Y-axis, Z-axis, rotary axis 7, upper electric cylinder, and lower electric cylinder 5 of the machine arm portion. After the reset of each axis is completed, the clamp of the sandwiching assembly opens, the L upper plate 59 opens, the unloading relay 135 sucks, and whether or not there is a work in the feed rack, which rack Determines if there is work, if there is no work, the machine arm automatically transitions to the standby routine, and if there is work on the feed rack, controller 128 picks up in which pick-up rack. At this time, the X-axis, Y-axis, Z-axis, and rotation axis 7 pick up the work 62 up to the specified coordinates based on the operating distance and operating speed of the position data control table. Then, after the work 62 is sent into the positioning clamp of the negative electrode 63 at the welding position and the work 62 is placed on the positioning clamp, the positioning clamp sends a work 62 arrival command to the controller 128 at this time. , The controller 128 sends a release command to the sandwiching assembly, and at the same time, retracts the arm Z axis to the origin position and stands by. After receiving the command that the Z axis has arrived at the origin, the controller 128 sends a compression command for the lower electric cylinder 5, and the lower electric cylinder 5 drives the L upper plate 59 to crimp the work 62.
Of these, the pressure of the L upper plate 59 is a torque signal that has been set on the touch screen 130. At the same time, the controller 128 also sends a charge command to the screen grid circuit 154, the welding circuit set 155, and the correction circuit set 156, and compares whether or not the charge voltage of the capacitor 149 matches the charge data written by the touch screen 130. If they match, a charge completion command is sent to the controller 128, and at the same time, when it is detected that the pressure values of the L upper plate 59 and the upper electric cylinder 4 have already reached the set pressure value. , The controller 128 sends a welding command. After that, the electric discharge is sequentially performed based on the discharge timing set on the touch screen 130. That is, the high-voltage capacitor 98 of the screen grid circuit 154 is first discharged, and when the capacitor voltage of the high-voltage capacitor 98 falls below the storage voltage of CN1 in the storage assembly 138, the diode 151 conducts, but at this time, it is high. CN1 in the voltage capacitor 98 and the capacitor assembly 138 is discharged at the same time. Of these, the discharge timing of the correction circuit set 156 is as follows. When the controller 128 detects the discharge completion signal of the welding circuit set 155, it immediately analyzes whether or not the power, resistance value, voltage, and current satisfy the setting requirements for the welding circuit set 155 by averaging. If not, the controller 128 has the degree of error value generated in the welding circuit set 155, and which correction branch or parallel connection value of which correction branch in the correction circuit set 156 is close to or the same as the error value. After calculating, secondary discharge is performed to make up for the shortage of welding power. When the controller 128 detects the secondary discharge completion signal, the controller 128 first sends a discharge command to the relay 135, then a start command for the upper electric cylinder 4 and the lower electric cylinder 5, and the controller 128 sends a lower electric cylinder. After detecting the arrival signals of the cylinder 5 and the upper electric cylinder 4, the Z-axis arm is further extended to reach the coordinates of the work 62, and then the sandwiching assembly sandwiches the work 62 and sends it to an empty position of the discharge port. .. After that, the machine arm returns to the initial position, at which time the first work cycle is completed, but if the work is continued, the device repeats the work. If the end command is sent by human involvement, the automatic step D is completed and the process proceeds to the discharge step E.
E, Unloading step: After the automatic step processing is completed in step D, the controller 128 sends an off command to the servo to detect whether the relay 135 is open and whether the capacitor 149 has completed discharging. After that, the power is automatically turned off. At the same time that the controller 128 automatically turns off the power, the power supply of the controller 128 itself is also turned off.

In the figure: 1 Table surface 2 Post 3 Power supply assembly 4 Upper electric cylinder 5 Lower electric cylinder 6 Cross slide table 7 Rotating shaft 8 Y axis 9 Holding assembly 10 Guide bar 11 Torque motor 17 Support bar 40 Inductor 48 Upper holding plate 49 Adjustment nut 51 Spring 52 Lower holding plate 53 Upper insulating plate 54 Lower self-locking nut 55 Power positive electrode 56 Extension bar 57 Positive electrode 58 L Upper nut 59 L Upper plate 60 Pull rod 61 L Lower nut 62 Work 63 Negative electrode 64 Power negative electrode 65 Lower Insulation plate 66 L Lower plate 67 L Slide bearing 68 L Lower retainer lid 69 L Upper retainer lid 73 Position servo motor 98 High voltage capacitor 124 Man-machine interface 125 Actor assembly 126 Welding power supply 127 Driver 128 Controller 129 Transmission line 130 Touch screen 131 Transistor Controller 132 Relay Controller 133 A / D Module 134 D / A Module 135 Relay 136 Flip Flop 137 Thyristor 138 Capacitor Assembly 139 Position Driver 141 Torque Driver 143 Inductor 144 Unload Controller 145 Amplifier 146 Fuse Switch 147 Charging Power 148 Feedback Resistor Instrument 149 Capacitor 150 Unloading resistor 151 Diode 154 Screen grid circuit 155 Welding circuit set 156 Correction circuit set 157 Free wheel diode

Claims (9)

A multi-layer metal welding device that includes a frame, an electric cylinder set, a pressure driven mechanism, a tension mechanism, a machine arm assembly, a welding assembly, a power supply assembly (3), and a work (62). The frame is connected to an electric cylinder set, a tension mechanism, a machine arm assembly, a welded assembly, a power supply assembly (3); the electric cylinder set is further connected to an upper electric cylinder (4). It comprises a lower electric cylinder (5); the upper electric cylinder (4) is connected to a frame and a pressure driven mechanism; the lower electric cylinder (5) is connected to a frame and a tensioning mechanism; the pressure driven mechanism is The upper electric cylinder (4) is connected to the welded assembly; the tension mechanism is connected to the frame, the lower electric cylinder (5), the workpiece (62); the machine arm assembly is connected to the frame. The welded assembly is connected to the frame, pressure driven mechanism, workpiece (62); the power supply assembly (3) is connected to the frame, welded assembly, electric cylinder set, machine arm assembly. ;
The frame comprises a table surface (1), a post (2), a guide bar (10), and a support bar (17); the table surface (1) is a post (2), a guide bar (10). ), The support bar (17), the tension mechanism, the welded assembly, the power supply assembly (3); the post (2) is connected to the table surface (1); the guide bar (10). Is connected to the table surface (1), the electric cylinder set; the support bar (17) is connected to the table surface (1), the electric cylinder set;
The pressure driven mechanism includes an upper holding plate (48), an adjusting nut (49), a lower holding plate (52), a lower self-locking nut (54), a plunger (40), and a spring (51). The upper holding plate (48) is connected to a push rod, a self-locking nut, an adjusting nut (49), a spring (51), and a plunger (40), respectively; the adjusting nut (49) is an upper portion, respectively. It is connected to a holding plate (48), a plunger (40); the lower holding plate (52) is connected to an upper insulating plate (53), a lower self-locking nut (54), a plunger (40), and a spring (51). The lower self-locking nut (54) is connected to a plunger (40), a lower holding plate (52); the plunger (40) is an upper holding plate (48), an adjusting nut (49), and a lower portion. It is connected to a holding plate (52), a lower self-locking nut (54), and a spring 51; the spring (51) is connected to a plunger (40), an upper holding plate (48), and a lower holding plate (52). Ori;
The tension mechanism includes an upper nut (58), an upper plate (59), a pull rod (60), a lower nut (61), a lower plate (66), a slide bearing (67), and a lower holding lid ( 68) and an upper retainer lid (69); the upper nut (58) is connected to an upper plate (59), a pull rod (60); the upper plate (59) is a workpiece (62). , An upper nut (58), a pull rod (60); the pull rod (60) is an upper nut (58), an upper plate (59), a lower nut (61), a lower plate (66), a slide bearing ( 67), the lower retainer lid (68), the upper retainer lid (69); the lower nut (61) is connected to the pull rod (60), the lower plate (66), respectively; 66) are connected to the shaft of the lower electric cylinder, the G self-locking nut of the lower electric cylinder, the pull rod (60), and the lower nut (61), respectively; the lower nut (61) is a pull lever (pull rod (1), upper part). It is connected to a holding lid (69) and a lower holding lid (68); the lower holding lid (68) is connected to a table surface (1), a pull rod (60), and a slide bearing (67), respectively; The top retainer lid (69) is connected to the table surface (1), pull rod (60), slide bearing (67);
The machine arm assembly comprises a cross slide table (6), a rotating shaft (7), a Y axis (8), and a sandwiching assembly (9); the cross slide table (6), respectively. It is connected to a table surface (1), a rotary shaft (7), and a power supply assembly (3); the rotary shaft (7) is connected to a cross slide table (6), a Y-axis (8) power supply assembly (3). Connected; the sandwiched assembly (9) is connected to the Y-axis (8); the cross slide table (6) further comprises an X-axis and a Z-axis;
The X-axis is connected to the table surface (1) and the Z-axis; the Z-axis is connected to the X-axis and the rotation axis (7);
The welded assembly includes an upper insulating plate (53), a power supply positive electrode (55), an extension bar (56), a positive electrode (57), a negative electrode (63), a power supply negative electrode (64), and a lower portion. It comprises an insulating plate (65); the upper insulating plate (53) is connected to a power positive electrode (55) and a lower holding plate (52); the power positive electrode (55) is an upper insulating plate (53). , The extension bar (56) is connected to a power supply positive electrode (55), a positive electrode (57); the positive electrode (57) is an extension bar (56), a work. The negative electrode (63) is connected to the work (62) and the power supply negative electrode (64); the power supply negative electrode (64) is connected to the negative electrode (63) and the lower insulating plate (65). ); The lower insulating plate (65) is connected to the power supply negative electrode (64) and the table surface (1);
The work (62) is connected to a positive electrode (57), a negative electrode (63), and an upper plate (59);
The power supply assembly (3) further comprises a man-machine interface (124), an actuator assembly (125), a controller (128), a welding power supply (126), and a driver (127); The man-machine interface (124) is connected to a controller (128); the actuator assembly (125) is connected to a controller (128)); the controller (128) is connected to a man-machine interface (124). ), The actuator assembly (125), the flip flop (136), the welding power supply (126), the driver (127); the welding power supply (126) is the actuator assembly (125), the controller (128), respectively. The driver (127) is connected to the controller (128);
The man-machine interface (124) comprises a touch screen (130), a transmission line (129), and a power port; the touch screen (130) is connected to a transmission line (129), a power port. The transmission line (129) is connected to the touch screen (130) and the transistor controller (131); the power port is connected to the touch screen (130), which is a power source isolated from commercial electricity, respectively;
The actuator assembly (125) consists of 10 to 30 relays (135), and the structure, principle, performance, parameters, and size of the relays (135) are the same, and the assembly and connection methods are the same. The coil of the relay (135) is connected to a DC power supply and a relay controller (132), respectively, and the contact portions of the relay (135) are a main control power supply, a driver (127), a welding power supply (126), and a power supply negative electrode. (64), connected to the power supply positive electrode (55);
The controller (128) further comprises a transistor controller (131), a relay controller (132), an A / D module (133), and a D / A module (134); the transistor controller (131). Are connected to a man-machine interface (124), a relay controller (132), a driver (127), and a welding power supply (126), respectively; the relay controller (132) is an actuator assembly (125), a welding power supply (126). ), The transistor controller (131), and the A / D module (133); the A / D module (133) includes a welding power supply (126), a relay controller (132), and a D / A module (134). Connected; said D / A module (134) is connected to a welding power supply (126), driver (127), A / D module (133);
The driver (127) comprises a power supply, a position servo drive assembly, and a torque servo drive assembly; the power supply is connected to a position servo drive assembly, a torque servo drive assembly; the position. The servo drive assembly is connected to the power supply, machine arm assembly and the torque servo drive assembly is connected to the power supply, electric cylinder set; the position servo drive assembly is from 4 sets of position servo drive assembly. It is connected to the X-axis motor, Z-axis motor, rotary axis (7) motor and Y-axis (8) motor of the cross slide table (6).
The position servo drive assembly comprises a position driver (139) and a position servomotor (73); the position driver (139) is connected to a transistor controller (131), a position servomotor (73). The position servo motor (73) is connected to a position driver (139), an X-axis motor or a Z-axis motor, a rotary axis (7) motor or a Y-axis (8) motor, and the torque servo drive assembly. Consists of two sets of torque servo members and is connected to the motor of the upper electric cylinder (4) and the motor of the lower electric cylinder (5); the torque servo member is; a torque driver (141) and a torque motor (11). ); The torque driver (141) is connected to a transistor controller (131), a D / A module (134), and a torque motor (11), respectively; the torque motor (11) is a torque driver, respectively. (141), connected to an upper electric cylinder (4) motor or a lower electric cylinder (5) motor;
The welding power supply (126) includes a first circuit (154), a second circuit (155), and a third circuit (156); the first circuit (154) and the second circuit (155). After the main circuit of the third circuit (156) is connected in parallel, it is connected to the normally closed contact of ZK1 in the power supply positive electrode (55), the power supply negative electrode (64), and the relay (135), and the flip-flop of the flip-flop circuit ( 136) is connected correspondingly to the transistor controller (131), thyristor (137);
The first circuit (154) includes an LM-1 in a flip flop (136), a KT1 in a thyristor (137), a free wheel diode (157), an inductor (143), a diode (151), and a storage group. It comprises a CN1 in a solid (138) and a high voltage storage unit (98); the LM-1 in the flipflop (136) is connected to a transistor controller (131), a KT1 in a thyristor (137); The KT1 in the thyristor (137) is connected in parallel with the freewheel diode (157) and then connected to the power supply positive electrode (55), the ZK1 in the relay (135), and the inductor (143); the freewheel diode (157). Is connected in parallel with the KT1 in the thyristor (137) and then connected to the power supply positive electrode (55), the ZK1 in the relay (135), and the inductor (143); the inductor (143) is the KT1 in the thyristor (137). It is connected to a freewheel diode (157), diode (151), high voltage power storage (98);
The diode (151) is connected to an inductor (143), a high voltage capacitor (98), and a CN1 in a storage assembly (138); the CN1 in the storage assembly (138) is a power supply negative electrode (64), a relay ( The ZK1 in 135) is connected to the diode (151); the high voltage capacitor (98) is connected to the inductor (143), the diode (151), and the power supply negative electrode (64);
The second circuit (155) consists of 1 to 10 weld branches with exactly the same structure, principle and parameters; the weld branches are LM-2 in flip-flops (136) and thyristors (137). It comprises a KT2 and a CN2 in the energy storage assembly (138); the LM-2 in the flip-flop (136) is connected to the transistor controller (131) and the KT2 in the thyristor (137), respectively; The KT2 in 137) is connected to the LM-2 in the flip-flop (136) and the CN2 in the storage assembly (138); the CN2 in the storage assembly (138) is the KT2 in the thyristor (137), the power supply negative electrode (64). ) Is connected;
The third circuit (156) consists of 1 to 10 correction branches with exactly the same structure, principle and parameters; the correction branches are; LM-3 in flip-flops (136) and KT3 in thyristors (137). And CN3 in the storage assembly (138); the LM-3 in the flip-flop (136) is connected to the transistor controller (131) and the KT3 in the thyristor (137), respectively; KT3 in the flip-flop (136) is connected to LM-3 in the flip-flop (136) and CN3 in the electricity storage assembly (138); CN3 in the electricity storage assembly (138) is connected to KT3 in the thyristor (137) and the power supply negative electrode (64). ) Connected;
The storage assembly (138) further includes a capacitor (149), a feedback resistor (148), a charging power supply (147), an FD3 in a discharge resistance (150), a ZK3 in a fuse switch (146), and an amplifier. The RG3 in (145) and the power down control (144); after the capacitor (149), the feedback resistor (148), and the charging power supply (147) of the storage assembly are connected in parallel. It is connected to the FD3 at the discharge resistance (150), the fuse switch (146), the KT3 at the thyristor (137), and the ZK3 at the power supply negative voltage (64); the FD3 at the discharge resistance (150) is the KT3 at the thyristor (137). It is connected to a capacitor (149), a feedback resistor (148), a charging power supply (147), a ZK3 in a fuse switch (146), and an RG3 in an amplifier (145); a ZK3 in the fuse switch (146), an amplifier (145). RG3 is connected to the FD3 in the discharge resistance (150) and the power supply negative side (64) after being connected in parallel; the power down control (144) is a D / A module (134), an amplifier (145), and the like. A multi-layer metal welding device characterized by being connected to a DC power source, a power supply negative electrode (64). The positive electrode (57) and the negative electrode (63) have the same principle, structure, dimensions, and connection method, are assembled on the same axis in the vertical direction, and are mirror-arranged so that their welded surfaces oppose each other. The positive electrode (57) and the negative electrode (63) have an outer circle M (a circle having a diameter of ΦD) coaxial with each other, and the vertical SR of each spherical surface of the discharge protrusion arranged on the welded surface. The axis (N) in the direction is coaxial; the size of the round angle C of the outer circle M of the positive electrode (57) is 10 to 30 times the height of the spherical SR (H size / discharge protrusion H). The height of the spherical SR of the positive electrode (57) is 0.2 times the crimping thickness (no gap) of the work (62); the diameter of the spherical SR of the positive electrode (57) is the work thickness (no gap). The size range of the contour line ΦR having the distance from the vertical axis of the positive electrode (57) to the axis (N) of the spherical SR as a radius is 10 to 100 times that of the positive electrode (57). ) Is 1/2 to 3/4 of the diameter ΦD (outer circle M), and the contour lines ΦR are 1 to 5; the diameter size of the outer contour line V of the spherical SR is inside the round angle C. The outer contour line V of the spherical SR and the inner contour line W of the round angle C, which are smaller than the diameter size of the contour line W, are centered on the vertical axis of the positive electrode; The number of spherical SRs of the electrode (57) is 1 to 100, and when the spherical SR is one, the axis (N) of the spherical SR and the central axis of the outer circle M are coaxial, and the spherical SR is When there are two or more, the axis (N) of the spherical SR is placed on the contour line ΦR, is uniformly arranged on the contour line ΦR, and is adjacent to the outer circle X of one spherical SR. It is not orthogonal to the outer circle X of the spherical SR, and the distance between X and X is not less than 2 mm; if multiple spherical SRs cannot be placed on request in one contour line, the positive electrode. After arranging the contour line between 1/2 to 3/4 of the diameter ΦD of (57), the spherical SR can be arranged on each one contour line; the positive electrode (57) and the negative. The welded surface of the electrode (63) is either circular or square, and both the welded surfaces of the positive electrode (57) and the negative electrode (63) have a discharge protrusion H, and the connection between the discharge protrusion H and the flat surface is Both are smooth curved connections ,
When the welded surfaces of the positive electrode (57) and the negative electrode (63) are square, the welded surfaces of the positive electrode (57) and the negative electrode (63) are each of the outer circle M (diameter ΦD). It is a square that contains a circle),
The multilayer metal welding apparatus according to claim 1. The structure, principle, dimensions, connection method, performance, and parameters of the upper electric cylinder (4) and the lower electric cylinder (5) are completely the same, and the pressure of the upper electric cylinder (4) is 10 to 15,000 kg f . The multilayer metal welding apparatus according to claim 1, wherein the upper electric cylinder (4) is a torque motor having a brake, and the motor output is 1 to 10 KW. What is adopted in the first circuit (154), the second circuit (155), and the third circuit (156) is a parallel connection circuit structure and a dendritic discharge method, that is, the withstand voltage and capacity of the capacitor (149) of each circuit. However, any discharge circuit can be selected according to the current required for the welded work (62), and it may be used alone or in combination, and it may be intermittent discharge or a preset discharge operation. The first circuit (154) is a combined high and low voltage superposed power supply, and the high and low voltage power supply switching is automatically switched by the diode (151); the second circuit (155) and the third circuit. (156) is compatible, i.e., the second circuit (155) and the third circuit (156) may be used as a welding module or a correction module. Multilayer metal welding equipment as described in. The multilayer metal welding apparatus according to claim 1, wherein the charging voltage and the discharging voltage of the high voltage capacitor (98) are larger than 500V. The electricity storage assembly (138) is 1 to 20 circuits; each circuit may be used alone, in parallel, or with intermittent discharge; said electricity storage assembly (138). ) Is the multilayer metal welding apparatus according to claim 1, wherein the device may be charged independently or simultaneously. The work (62) is an aluminum foil, copper foil, aluminum strip, copper strip or aluminum base material surface treatment material or copper base material surface treatment material between 2 layers to 500 layers, and the base material thickness is 0.006 mm. The multilayer metal welding apparatus according to claim 1, wherein the thickness is between 1 mm and 1 mm. The multilayer metal welding apparatus according to claim 1, wherein the upper electric cylinder (4) and the lower electric cylinder (5) have the same structure and principle, and are mirror images and coaxially arranged. It is a welding method for multi-layer metal welding equipment.
A, In the preparation step: Based on the technical requirements of the work (62), the electrode shapes of the positive electrode (57) and the negative electrode (63) should be selected, and the material resistance value of the work (62) should be welded. The number of layers and the resistance value, and the oxide film resistance value of different layers are calculated to determine whether the center point welding or the penetration welding is performed; then, based on the welding area required by the technical requirements, the positive electrode (57). ) And the ΦD size of the negative electrode (63), and at the same time, the spherical SR and the contour line ΦR (the central axis of the positive electrode (57) and the negative electrode (63)) arranged on the respective welded surfaces of the spherical SR. Calculate the quantity and placement quantity of the circle) with the distance of the axis (N) as the radius; the number of nuggets formed by the weld nugget; The positive electrode (57) used in welding after adjusting the pressure of the spring (51) of the pressure driven mechanism by calculating the yield point and the hardness reduction value generated by the set torque and the work (62) receiving high heat. And the negative electrode (63) is attached, and then the axial cross-sectional coordinates of the negative electrode (63) are adjusted to make the positive electrode (57) and the negative electrode (63) coaxial, and then the negative electrode (63) is attached. It is fixed and then rotated at the rotation angle of the negative electrode (63) so that the axis (N) of the negative electrode (63) and the axis (N) of the positive electrode (57) are coaxial and the negative electrode (N). By tightening the rotating bolt of 63), the negative electrode (63) is prevented from rattling up, down, left, right, front and back; at this time, the preparation step A is completed and the next step is completed. , Move to self-check step B,
With the preparation step;
B, self-check step B: After the preparatory step is completed by step A, the multilayer metal welder moves to self-check step B; first, it is inspected whether the emergency stop and warning are valid. If valid, the controller (128) sends an audio / optical warning signal to the actuator assembly (125) and at the same time sends a fault location and fault handling method to the touch screen (130) through the transmission line (129). Next, check whether the motion pair of each axis is in the origin position, and if it is not in the origin position, the touch screen (130) displays which axis is not in the origin position and " Whether to return to the origin position based on the specified path and axial motion sequence ”is displayed; finally, after the initialization of the controller (128) is completed and the self-check is passed, it is displayed on the touch screen (130). If "Please select the serial number of the welded work" is displayed and the already welded work is selected, the controller (128) automatically jumps to the automatic step D and performs the automatic circulation welding work. Start; if the selection is a new work, the controller (128) automatically jumps to the dimension control / parameter setting menu screen; at this time, self-check step B is completed and Move to setting step C or automatic step E,
With self-check steps;
C, Setting step: After the self-check step process in step B, the controller (128) automatically jumps to setting step C and switches the screen of the touch screen (130) to the dimension control / parameter setting menu; After that, based on the data calculated in the preparation step A, the parameters are written to the machine arm part, the preload part, the pre-tension part, the discharge part, the charging part, and the unloading part; After taking out 62), it is placed at the welding coordinate intermediate between the positive electrode (57) and the negative electrode (63) to prepare for welding, and after the welding is completed, the work (62) is further transferred to the discharge rack; during this period, The operating speed and parameters of the machine arm X-axis, Y-axis, Z-axis, rotary axis (7), upper electric cylinder (4), and lower electric cylinder (5) can be adjusted and set online. The set parameters are subjected to a sizing test of the operating speed of the X-axis, Y-axis, Z-axis, rotary axis (7), upper electric cylinder (4), and lower electric cylinder (5) by the operator until the process requirement is reached. , The sizing test of interlocking interpolation and the sizing test of software interruption are repeated, and at the same time, the machine arm can automatically determine the presence / absence of workpieces in the feed rack and discharge rack, and the order of picking up and leaving. ;
The preload section uses the upper electric cylinder (4) as a power source, and has an upper electric cylinder, a pressure driven mechanism, an upper insulating plate (53) of a welded assembly, a power supply positive electrode (55), an extension bar (56), and a positive electrode (57). Is driven to move in the direction of the work (62), and pressure is applied to the work (62) as a reference for fixing the negative electrode (63), but the magnitude of the pressure is the touch screen (130). ) Can be corrected online, and the magnitude of the pressure value is automatically triggered and adjusted in real time, and at the same time, after the feedback signal is fed back into the transistor controller (131), the transistor controller (131) Further, when compared with the pressure value written on the touch screen (130), if the feedback value and the writing pressure value are equal, the brake of the upper electric cylinder (4) is released and the upper electric cylinder (4) is operated. If the feedback value is greater than the write pressure value, the upper electric cylinder (4) moves in the opposite direction to the work (62) until the feedback value equals the write pressure value. With the brakes on the cylinder (4) off, the upper electric cylinder (4) stops running; otherwise it is the opposite; the pre-tension section is where the lower electric cylinder (5) works the tension mechanism (62). While driving to move in the direction of, pressure is applied to the work (62) as a reference standard for fixing the work (62), but the magnitude of the pressure is online on the touch screen (130). In addition to being able to be corrected, the magnitude of the pressure value is automatically triggered and adjusted in real time; at this time, the parameter setting and adjustment of each axis of the motion pair are completed, and the process shifts to the charging and discharging parameter setting; First, the breakdown pressure of the oxide film is calculated based on the difference in the oxide film thickness and the number of layers of the workpiece (62) to be welded, which sets the first circuit (154). In terms of charging pressure, the charging voltage selection range is 500 to 5000V, and then the charging voltage of CN1 in the power storage assembly (138) is further set, but the charging voltage selection range is 20 to 100V, which is calculated. The method is the preheating time and preheating temperature of the work (62), the higher the voltage, the longer the preheating time; then set the second circuit (155), select the welding power of the work (62). Based on the thickness, number of layers, and welding area of each layer of the work (62) After calculating the welding power and the welding current, the quantity of the welding branch is further selected based on the welding power and the welding current, and the charging voltage of the CN2 set in the power storage assembly (138) is determined, and the welding branch is Determine whether to discharge at the same time or intermittent discharge or discharge sequence; then write into the controller (128) through the touch screen (130), but the range of the written charge voltage is 0-50V; finally, The third circuit (156) is set, but the correction branch charging voltage is written in the controller (128) by the touch screen (130) while charging each correction branch by dividing the number of correction branches from the voltage value. , The range of the written charge voltage is 0 to 50V; at this time, the processing of the setting step C is completed, and the process shifts to the automatic step D.
With setting steps;
D, an automatic step: After the process is completed in the setting step of step C, the controller (128) automatically jumps to the automatic step D, waits for an automatic operation command from the operator, and the operator touches the touch screen (12). When the automatic operation button is pressed on 130), the device automatically operates; first, when the controller (128) receives an automatic operation command from the touch screen (130), the controller (128) controls the X-axis of the machine arm unit. , Y-axis, Z-axis, rotary axis (7), upper electric cylinder, lower electric cylinder (5) send an automatic reset operation, and after the reset of each axis is completed, the clamp of the sandwiching assembly opens and the upper plate (59) opens, the unloading relay (135) is attracted, and it is determined whether or not there is a work in the feed rack and which rack has the work. If there is no work, the machine arm is The controller (128) automatically shifts to the wait routine, and if there is a work on the feed rack, the controller (128) sends a command of the operation order as to which work to pick up. At this time, the X-axis and the Y-axis are sent. , Z-axis, rotation axis (7) picks up the work (62) up to the specified coordinates based on the operating distance and operating speed of the position data control table, and then the work (62) is used as the negative electrode at the welding position ( After sending into the positioning clamp of 63) and placing the work (62) on the positioning clamp, the positioning clamp sends a work (62) arrival command to the controller (128), at which time the controller (128) While sending a release command to the pinching assembly, the arm Z-axis is retracted to the origin position and waits; the controller (128) receives the signal that the Z-axis arrives at the origin, and then compresses the lower electric cylinder (5). Along with sending a command, the lower electric cylinder (5) drives the upper plate (59) to crimp the work (62), of which the pressure of the upper plate (59) is set on the touch screen (130). Is the completed torque signal; the controller (128) also sends a charging command to the first circuit (154), the second circuit (155), and the third circuit (156) at the same time, and charges the capacitor (149). Compare whether the voltage matches the charging data written on the touch screen (130), and if so, send a charge completion command to the controller (128) and at the same time send a charge completion command to the top plate (59). ) And the pressure value of the upper electric cylinder (4) have already reached the set pressure value. When detected, the controller (128) sends a welding command; then sequentially discharges based on the discharge sequence set on the touch screen (130); the high voltage capacitor (98) of the first circuit (154). ) Is discharged first, and when the stored voltage of the high voltage capacitor (98) falls below the stored voltage of CN1 in the storage assembly (138), the diode (151) conducts. ) And CN1 in the storage assembly (138) are discharged at the same time;
Of these, the discharge sequence of the third circuit (156) is as follows. When the controller (128) detects the discharge completion signal of the second circuit (155), the power is immediately applied to the second circuit (155). The average value is analyzed whether the resistance value, voltage, and current meet the setting requirements; if not, the controller (128) determines the degree of error value generated in the second circuit (155), the third circuit. After calculating which correction branch or the parallel connection value of which correction branch in (156) is close to or the same as the error value, a secondary discharge is performed to make up for the shortage of welding power;
When the controller (128) detects the secondary discharge completion signal; the controller (128) first sends a discharge command to the relay (135), and then activates the upper electric cylinder (4) and the lower electric cylinder (5). After sending a command and detecting the arrival signals of the lower electric cylinder (5) and the upper electric cylinder (4) by the controller (128), the Z-axis arm is further extended to reach the coordinates of the work (62). , The pinching assembly pinches the work (62) and feeds it to the open position of the discharge port; after that, the machine arm returns to the initial position, at which time the first work cycle is completed, but the work continues. If so, the device repeats the operation; if the termination command is sent by human involvement, automatic step D is completed and the process proceeds to discharge step E.
Automatic step; E, unloading step: After the automatic step processing is completed in step D, the controller (128) sends an off command to the servo to check whether the relay (135) is open or not. After detecting whether the capacitor (149) has completed discharging, the power is automatically turned off; the controller (128) automatically turns off the power, and at the same time, the power supply of the controller (128) itself is also turned off. A method of welding a multi-layer metal welding device, comprising unloading steps and;

Images