A double-point type side spot welding device

Abstract

A double-point side spot welding device of the present invention includes a machine base, a product fixture and a spot welding device installed on the machine base, and a control device is provided. The control device controls the operation of the spot welding device. The control device includes a storage unit for storing operation conditions and operation programs. The control device is configured to be able to detect state values including the current and torque of the motor driving the spot welding device. The control device is configured to implement the following detection control: separately setting parameter control for each dotting of the spot welding device, and when the state value of the motor driving the electric welding device, the workpiece detection parameter, and the state value of the workpiece operator deviate from the predetermined range, driving the spot welding device to stop and providing a warning. The product fixture includes a fixture positioning seat at the lower end and a product fixture. Multiple sets of product fixtures are arranged on the fixture positioning seat. The product fixture is encoded according to the FDTI1248 protocol. The control device reserves ports to receive signals of the 1248 protocol to control different product fixtures to clamp different products. The present invention provides a double-point side spot welding device that can operate automatically, detect automatically, and report errors automatically.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly to a double-point side spot welding device. Background Art

[0002] During the spot welding process of the existing spot welding device, due to the need for manual loading and unloading, operation errors and operation safety problems are likely to occur. In order to meet the requirements of automated production and improve the working efficiency of spot welding, it is necessary to provide a spot welding device that can operate automatically, detect automatically, and report errors automatically. Summary of the Invention

[0003] The present invention provides a double-point side spot welding device that can operate automatically, detect automatically, and report errors automatically to overcome the deficiencies of the existing technology.

[0004] A double-point side spot welding device of the present invention includes a machine base, a product fixture and a spot welding device installed on the machine base, and a control device is provided. The control device controls the operation of the spot welding device. The control device includes a storage unit for storing action conditions and action programs. The control device is configured to be able to detect state values including the current and torque of the motor driving the spot welding device. The control device is configured to implement the following detection control: setting parameter control for each spot of the spot welding device respectively, and when the state values of the motor driving the electric welding device, the workpiece detection parameters, and the workpiece operator state values deviate from the predetermined ranges, driving the spot welding device to stop and providing a warning; the product fixture includes a fixture positioning seat at the lower end and a product fixture. Multiple sets of product fixtures are arranged on the fixture positioning seat. The product fixture is encoded according to the FDTI1248 protocol. The control device reserves ports to receive signals of the 1248 protocol to control different product fixtures to clamp different products.

[0005] Preferably, the control device is equipped with a fixture encoder. The fixture encoder is inserted into the control device, and the control device reads the numerical value for compilation and discriminates it from the information input into the control device to retrieve the program in the control device and then start running.

[0006] Preferably, the control device is also equipped with a detector. The detector collects information on the product fixture and the spot welding device and feeds the information back to the control system for the control system to make a discrimination.

[0007] Preferably, each workpiece detection parameter, the state value of the motor driving the spot welding device, and the workpiece operator state value are respectively associated with the welding instructions for each spot.

[0008] Preferably, the action program includes the welding instructions for each spot and the setting information for setting the detection parameters for each spot.

[0009] Preferably, the control device is equipped with a human-machine exchange operation cabinet, and the human-machine exchange operation cabinet displays the status information of the detection parameters of each marking point.

[0010] Preferably, the control device is equipped with an alarm. When the control device detects that the state value of the welding device driving motor, the workpiece detection parameters, and the workpiece operator state value are out of a predetermined range, the control device drives the spot welding device to stop spot welding and provides a warning through the alarm.

[0011] Preferably, the product fixture comprises a fixture positioning seat at the lower end and a product fixture, and the fixture positioning seat is equipped with multiple sets of product fixtures to clamp different products.

[0012] Preferably, each of the product fixtures is called by coding, and is matched to clamp products of different models, and together with the products forms the workpiece detection parameters of the control system.

[0013] Preferably, the spot welding device comprises a plurality of spot welding arms and a clamping arm and a welding gun installed on a machine base. The clamping arm cooperates with a product fixture to clamp the product, and the electric welding arm drives the welding gun to achieve product welding.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a double-spot lateral spot welding device that can automatically operate, automatically detect, and automatically report errors, which can effectively improve the spot welding work efficiency, reduce the spot welding error rate, reduce the manual utilization rate, and improve the safety of spot welding operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the present invention;

[0016] Figure 2 is a side view of the present invention;

[0017] Figure 3 It is a schematic diagram of the workflow of the present invention;

[0018] In the attached drawings, there are controller 1, left spot welding arm 2, control cabinet 3, man-machine exchange operation cabinet 4, product fixture 6, start button 7, upper clamping arm 8, side clamping arm 9, transformer 10, fixture positioning seat 601, product fixture 602, and machine base 11. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0020] Example 1

[0021] like Figures 1-3As shown in the figure, a double-point type side spot welding device of the present invention includes a machine base 11, a product fixture 6 and a spot welding device installed on the machine base 11, and further includes a control device. The control device controls the operation of the spot welding device. The control device includes a storage unit for storing action conditions and action programs, and is configured to detect state values including the current and torque of the motor driving the spot welding device. Moreover, the following detection control is implemented: parameter control is set for each spot of the spot welding device respectively. When the state value of the motor driving the electric welding device, the workpiece detection parameter, and the state value of the workpiece operator deviate from the predetermined range, the driving of the spot welding device is stopped; the product fixture 6 includes a fixture positioning seat 601 at the lower end and a product fixture 602. The fixture positioning seat 601 is equipped with multiple sets of product fixtures 602. The product fixture 602 is encoded according to the FDTI1248 protocol. The control device reserves a port to receive the signal of the 1248 protocol to control different product fixtures 602 to clamp different products.

[0022] The control device is equipped with a fixture encoder. The fixture encoder is inserted into the control device, and the control device reads the value for compilation and discriminates it from the information input by the control device to retrieve the program in the control device and then start running.

[0023] The control device is also equipped with a detector. The detector collects information on the product fixture and the spot welding device and feeds the information back to the control system for the control system to make a discrimination.

[0024] The double-point type side spot welding device of the present invention, through the design of the control device and the cooperation between the control device and the spot welding device, realizes the automatic detection of the spot welding device during the spot welding process, the automatic control operation and automatic control stop after the automatic detection, and the automatic display of the stop reason, improves the efficiency of the spot welding device, and solves the problems of operation errors and welding errors in the prior art.

[0025] The product fixture 6 of the present invention is equipped with multiple sets, encoded according to the FDTI1248 protocol, and is controlled by the control device. Different fixtures are automatically selected according to different products to clamp different products. The product fixture 6 includes a fixture positioning seat 601 at the lower end and a product fixture 602. The fixture positioning seat 601 is equipped with multiple sets of product fixtures 602. The product fixture 602 is encoded according to the FDTI1248 protocol. The control device reserves a port to receive the signal of the 1248 protocol to control different product fixtures 602 to clamp different products.

[0026] The respective workpiece detection parameters, the state value of the motor driving the spot welding device, and the state value of the workpiece operator are respectively associated with the welding instructions for each spot. The welding instructions for each spot are set separately, which improves the control accuracy of the control device and facilitates the realization of real-time monitoring and management of each weld joint.

[0027] The operation program includes welding instructions for each dot and setting information for setting detection parameters of each dot.

[0028] The control device includes a control cabinet 3 and a man-machine exchange operation cabinet 4 connected for control. The man-machine exchange operation cabinet 4 configured in the present invention can display the status information of the detection parameters of each dot, can display the parameters of the spot welding device of the present invention in real time, and can display in real time the parameters of the disengagement that cause the spot welding device to stop running, which is convenient for quickly finding out the reasons, correcting errors, and restoring the normal working state.

[0029] The control device is equipped with an alarm. When the control device detects that the state value of the drive motor of the electric welding device, the workpiece detection parameters, and the state value of the workpiece operator are out of the predetermined range, it drives the spot welding device to stop dotting and provides a warning through the alarm, thereby warning the user in real time and facilitating error correction.

[0030] The product fixture 6 includes a fixture positioning seat 601 at the lower end and product fixtures 602. The fixture positioning seat 601 is equipped with multiple sets of product fixtures 602 to clamp different products, greatly expanding the scope of use.

[0031] Each of the product fixtures 602 is called by coding, cooperatively clamps products of different models, forms the workpiece detection parameters of the control system together with the products, and realizes unified management in the control device, achieving the monitoring and management of each part of the entire spot welding device.

[0032] The spot welding device includes a plurality of spot welding arms, a clamping arm and a welding torch mounted on the machine base. The clamping arm cooperates with the product fixture 6 to clamp the product, and the spot welding arm drives the welding torch to perform product welding.

[0033] In the spot welding device of the present invention, a Japanese Denkai welding machine is selected as the working execution unit. It receives the call program commands from the control cabinet 3, performs spot welding operation, and feeds back the operation status of the spot welding operation to the control cabinet 3. The control device selects an Omron PLC system and communicates with the product fixture 602 through operation. The control device receives signals of the 1248 protocol to control different product fixtures 602 to clamp different products. The product fixture 602 clamps different products and feeds back the identification and action completion status of the clamped products to the control device. In the present invention, the control device is the core unit of the system, which dominates and coordinates the spot welding device and the product fixture, and verifies the fixture and the human-machine interface. The human-machine exchange operation cabinet 4 selects a Pro-face touch screen system. The human-machine exchange operation cabinet 4 is the human-machine communication unit, which is used to set welding conditions, debug manual operations, receive and display alarm information, and for querying. The control device of the present invention transmits the detection parameters to the control cabinet 3 through the detection parameters of each part. The control cabinet triggers the left spot welding arm to act. After completion, the right spot welding arm acts. After welding is completed, the upper clamping arm and the side clamping arm are opened respectively, and the work ends. During the spot welding process, the control cabinet 3 commands coordinated work.

[0034] For the double-point side spot welding device of the present invention, parameters need to be preset in advance: welding parameters such as vehicle type / current / voltage / air pressure / maintenance parameters / counting, etc. are set through the human-machine operation panel 4. When the conditions are not met, an alarm is given and the reason for non-compliance is displayed. The operator can quickly find out the reason and make corrections. In the specific production process, first place the product in the product fixture 6. After confirmation, press the start button 7. After starting, the upper clamping arm 8 and the side clamping arm 9 act respectively to clamp the product. After each detection device determines that there is no error, it notifies the 3PLC control cabinet, triggering the left spot welding arm 2 to act first; after completion, the right spot welding arm 5 acts. After welding is completed, the upper clamping arm 8 and the side clamping arm 9 are opened respectively, and the work ends. During the spot welding process, the spot welding control cabinet 3 and the transformer 10 receive the commands from the PLC control cabinet 3 to coordinate work.

[0035] According to the parameters preset in the control device, when the parameter conditions are not met, the human-machine operation panel 4 displays the reason for non-compliance. The operator can quickly find out the reason, correct the error, and restore the normal working state. When the maintenance cycle is met, an alarm will also be given and the reason will be displayed.

[0036] In the present invention, the control device is also equipped with a detection system: including water flow detection to monitor the water path in real time to prevent blockage; infrared detection to monitor the safety of operators in real time; air pressure detection; current and voltage detection; product presence detection; action interference detection, etc.

[0037] In terms of operation, the welding process is fully automatic with manual loading and unloading. Since it is manual loading, the equipment is equipped with a safety device. The equipment can only be started when the operator's hands leave the safety area. The starting method is a two-hand button. The workpiece placed must be in the correct position for the start to be effective. If the product is not in the correct position or there is a foreign object placed, the equipment cannot be started, and the cross-section of the man-machine exchange operation cabinet will display an error message and the alarm will sound.

[0038] In the present invention, the same spot welding device is equipped with and replaces multiple sets of welding jigs through the product positioning fixture 6 to produce multiple products. Each set of jigs corresponds to one product, and each set of jigs is coded, and the product production program is called through the code.

[0039] In the present invention, the control device is equipped with a detector to collect real-time information on the product jig, spot welding device, etc. After the control system receives the information, it issues instructions to the man-machine exchange operation cabinet 4 for operation.

[0040] When it is necessary to load the product jig and then insert the encoder switch, according to the "mode selection" module, the encoder is read for its value, which is compiled and compared with the information input by the man-machine interface. When the information is consistent, the program stored therein is called and the ready-to-run signal light flashes. When they are inconsistent, an alarm message is sent to the man-machine interface to remind the operator to make adjustments.

[0041] When the jig is being debugged, the switch is turned to the manual button to start the "manual circuit" module for manual mode debugging. The manual mode also interacts with the man-machine exchange operation cabinet 4 in real time to guide the operator to operate correctly.

[0042] When the product is in normal production, the "origin reset" module is started first to return all the product jigs, spot welding devices, and peripheral equipment to their original positions. After completion, the man-machine interface prompts the operator that normal production can be carried out. The "automatic operation" module is started for production. Each time an action is completed, the "counting module" works once to calculate the production quantity and the maintenance quantity. When the set value is reached, a message is sent to the man-machine interface and the machine stops running. The operator can only run it after repairing according to the prompt. When an abnormality is detected in real time by the "action end", the "abnormality detection" module is started to judge the abnormality and output an alarm to the man-machine interface, requiring the operator to repair it.

[0043] The output circuit module is a module for information exchange with peripheral equipment.

[0044] The IO terminal module is a module for specifically exchanging information with the man-machine interface.

[0045] Production process: Production preparation: Install the fixture to be produced, insert the encoder, and automatically call the program; Production: The worker places the product into the fixture, and the fixture conducts identification. After ensuring accuracy, the system prompts that it can be started. The worker presses the start button, and the equipment automatically welds. After welding is completed, the product fixture 6 opens, and the worker takes out the product. During the welding process, the worker just prepares for the next welded product, and this process repeats cyclically.

[0046] Finally, it should be noted that the above-listed are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments and there can be many variations. All variations that can be directly derived or associated by those of ordinary skill in the art from the content disclosed in the present invention should be considered as within the protection scope of the present invention.

Claims

1. A double - point type side - spot welding device, comprising a machine base, a product fixture and a spot welding device mounted on the machine base, and a control device. The control device controls the operation of the spot welding device. The control device includes a storage unit for storing operation conditions and operation programs, and is configured to be able to detect state values including the current and torque of the motor driving the spot welding device. It is characterized in that: The control device is configured to implement the following detection control: parameter control is separately set for each spot welding of the spot welding device. When the status value of the driving motor of the electric welding device, the workpiece detection parameter, and the status value of the workpiece operator deviate from the pre-determined range, the spot welding device is driven to stop and a warning is provided. The product fixture includes a fixture positioning seat at the lower end and a product fixture. Multiple sets of product fixtures are arranged on the fixture positioning seat. The product fixture is encoded according to the FDTI1248 protocol. The control device reserves ports to receive signals of the 1248 protocol to control different product fixtures to clamp different products. The control device is equipped with a fixture encoder. The fixture encoder is inserted into the control device, and the value read by the control device is compiled and discriminated from the information input into the control device to call the program in the control device and then start running. The control device is equipped with a man-machine exchange operation cabinet, and the man-machine exchange operation cabinet displays the status information of the detection parameters of each spot. The control device is equipped with an alarm. When the control device detects that the status value of the driving motor of the electric welding device, the workpiece detection parameter, and the status value of the workpiece operator deviate from the pre-determined range, the spot welding device is driven to stop spot welding and a warning is provided through the alarm.

2. The double-point type side spot welding device according to claim 1, characterized in that: The control device is also equipped with a detector. The detector collects information on the product fixture and the spot welding device and feeds the information back to the control system for the control system to make a judgment.

3. The double-point type side spot welding device according to any one of claims 1-2, characterized in that: Each of the workpiece detection parameters, the status value of the driving motor of the spot welding device, and the status value of the workpiece operator is respectively associated with the welding instruction of each spot.

4. The double-point type side spot welding device according to any one of claims 1-2, characterized in that: The action program includes the welding instructions for each spot and the setting information for setting the detection parameters of each spot.

5. The double-point type side spot welding device according to any one of claims 1-2, characterized in that: The control device reserves 4 ports to receive signals of the FDTI1248 protocol to call different product fixtures.

6. The double-point type side spot welding device according to any one of claims 1-2, characterized in that: The spot welding device includes a number of spot welding arms, a clamping arm and a welding gun installed on the machine base. The clamping arm cooperates with the product fixture to clamp the product, and the electric welding arm drives the welding gun to perform product welding.

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