CN208019674U - A kind of tail boom assembly welding fixture leak detection system - Google Patents

Abstract

The utility model discloses a kind of tail boom assembly welding fixture leak detection systems, have including fixed frame, main clamp and sub-folder, sub-folder tool is equipped with angular transducer, pressure sensor is housed on the lever arm of sub-folder tool, the system further includes microcontroller, alarm control circuit, alarm, the connection of the equal and microcontroller of angular transducer and pressure sensor.The leak detection system detects the rotational angle of the lever arm of sub-folder tool by having upper setting angle sensor in sub-folder, and pressure sensor is installed on lever arm to detect the clamping force of sub-folder tool, judge whether sub-folder tool normally clamps secondary workpiece in conjunction with angle value and pressure value, when judging that sub-folder tool does not normally clamp secondary workpiece, may be to there is the leakage of secondary workpiece to put or to put orientation not right at this time, system sends out alarm signal in the case, to remind worker's benefit to put secondary workpiece or ajust secondary workpiece, avoid the occurrence of solder skip, the case where mistake weldering, to prevent malfunctioning, improve the yields of tail boom assembly.

Description

A kind of tail boom assembly welding fixture leak detection system

Technical field

The utility model is related to auto parts machinery tooling fields, more specifically, it relates to a kind of tail boom assembly welding fixture Leak detection system.

Background technology

With the improvement of living standards with the rapid development of auto industry, automobile come into more and more average families. Tail boom assembly is the important component of automobile, and quality influences the bus body strength of automobile.

In the prior art, tail boom assembly is typically to be processed by welding into type, and welding needs to use welding fixture, is welded Jig includes main clamp and sub-folder tool.The welding of tail boom assembly first uses the main clamp of welding fixture by the main body of tail boom assembly （I.e. main workpiece）It is fixedly clamped, then each welding position in main body places accessory（I.e. secondary workpiece）, then with sub-folder tool by accessory It is fixedly clamped, reuses the automatic welding that welding robot completes each welding position later, be finally completed the welding of tail boom assembly Molding.

But due to need the accessory placed more and be by manually putting accessory, due to worker is absent minded, It is careless and inadvertent, it may appear that the welding position leakage having puts accessory or the orientation of accessory is put to wrong, this Welder after may result in There is the case where solder skip, wrong weldering in work, influences the welding quality of tail boom assembly.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of inspections of tail boom assembly welding fixture Leakage system can prevent occurring the case where solder skip, wrong weldering in tail boom assembly welding process.

To achieve the above object, the utility model provides following technical solution：

A kind of tail boom assembly welding fixture leak detection system, including fixed frame, main clamp and multigroup sub-folder tool, the sub-folder tool Including the fixed arm that is fixed on fixed frame and by the lever arm of connecting shaft and fixed arm rotation connection, the connecting shaft with Lever arm is connected and fixed, and the lever arm is driven by pressure cylinder, and angular transducer is fixed on the fixed arm, and the angle passes The shaft of sensor and connecting shaft are coaxially connected, and the position contacted with secondary workpiece on the lever arm is equipped with pressure sensor, should Leak detection system further includes microcontroller, alarm control circuit, alarm and power module, the control letter of the alarm control circuit The control signal output of number input terminal connection microcontroller, the alarm connect and are controlled by alarm control circuit, the angle The output end of degree sensor and pressure sensor is connect with the sample port of microcontroller.

Preferably：It is also equipped with indicator light on each group sub-folder tool, which further includes instruction driving circuit, The signal output end of the input terminal connection microcontroller of the instruction driving circuit, the output end connection of the instruction driving circuit refer to Show lamp.

Preferably：The leak detection system further includes the display screen being connect with microcontroller.

Preferably：The alarm is audible-visual annunciator.

Preferably：The alarm control circuit is relay, and the power supply that the relay is connected to alarm returns Lu Zhong.

Preferably：The instruction driving circuit is amplifying circuit.

Preferably：The power module includes rectification circuit, filter circuit and regulator circuit.

Compared with prior art, the utility model has the advantages that：The leak detection system is passed by having upper setting angle in sub-folder Sensor come detect sub-folder tool lever arm rotational angle, and on lever arm install pressure sensor come detect sub-folder tool Clamping force judges whether sub-folder tool normally clamps secondary workpiece in conjunction with angle value and pressure value, is pressed from both sides when judging that sub-folder tool is not normal Firmly when secondary workpiece, may be at this time there is secondary workpiece leakage to put or put orientation is not right, and system sends out alarm signal in the case, To remind worker to mend the case where putting secondary workpiece or ajusting secondary workpiece, avoid the occurrence of solder skip, wrong weldering, to prevent malfunctioning, carry The yields of high tail boom assembly.

Description of the drawings

Fig. 1 is the structural schematic diagram of welding fixture；

Fig. 2 is the portions the A enlarged drawing in Fig. 1；

Fig. 3 is the circuit diagram of leak detection system；

Fig. 4 is the schematic diagram of power module.

Reference sign:1, fixed frame；2, connecting plate；3, main clamp；4, sub-folder has；401, pressure cylinder；402, fixed Arm；403, lever arm；404, connecting shaft；405, angular transducer；406, link；407, pressure sensor；408, indicator light； 5, main workpiece；6, secondary workpiece.

Specific implementation mode

Referring to Figures 1 and 2, a kind of tail boom assembly welding fixture leak detection system, including fixed frame 1 are useful on fixed frame 1 The connecting plate 2 being connect with external support structure is equipped with a pair of main clamp for clamping main workpiece 5 at the both ends of fixed frame 1 3, multigroup sub-folder tool 4 for clamping secondary workpiece 6,4 packet of sub-folder tool are installed on fixed frame 1 and between two main clamps 3 It includes and is fixed on fixed arm 402 and the lever arm 403 being rotatablely connected by connecting shaft 404 and fixed arm 402 on fixed frame 1, even Spindle 404 is connected and fixed with lever arm 403, and lever arm 403 is driven by pressure cylinder 401.Pass through link on fixed arm 402 406 are fixed with angular transducer 405, and the shaft and connecting shaft 404 of angular transducer 405 are coaxially connected, on lever arm 403 with The position that secondary workpiece 6 contacts is equipped with pressure sensor 407.

With reference to Fig. 3, which further includes microcontroller, alarm control circuit, alarm and power module, alarm control The control signal output of the control signal input connection microcontroller of circuit processed, alarm connect and are controlled by controlling alarm electricity The output end of road, angular transducer 405 and pressure sensor 407 is connect with the sample port of microcontroller.

Here alarm is audible-visual annunciator.

In the present embodiment, alarm control circuit is relay, and relay is connected in the electric power loop of alarm.

The operation principle of the leak detection system is：

Main workpiece 5 is lifted on welding fixture by worker, and operates welding fixture, and main clamp 3 is made to be fixedly clamped main workpiece 5, each secondary workpiece 6 is placed on main workpiece 5 at corresponding welding position by subsequent worker, then operates welding fixture, makes each group pair Fixture 4 clamps.

Under normal circumstances --- after i.e. welding position places secondary workpiece 6, after sub-folder tool 4 clamps secondary workpiece 6, lever arm 403 angles turned over are it is believed that since angular transducer 405 is as lever arm 403 rotates synchronously, so angle The angle that sensor 405 rotates is also confirmable；In addition, the clamping force that sub-folder has 4 pairs of secondary workpiece 6 is also that can determine --- the pressure that i.e. pressure sensor 407 is subject to is confirmable.

If welding position does not place secondary workpiece 6, after sub-folder tool 4 clamps, angle and its clamping force that lever arm 403 turns over Degree all can be different.

The angle information detected is fed back to microcontroller, microcontroller by angular transducer 405 and pressure sensor 407 respectively The angle value received and pressure value are compared with preset reference value.Only angle value and pressure value with it is respectively corresponding Reference value it is equal when, just judge that sub-folder tool 4 has clamped secondary workpiece 6, otherwise judge that sub-folder has 4 to clamp secondary workpiece 6.After appearance When a kind of situation, just secondary workpiece 6 has been put in explanation leakage on main workpiece 5 or the orientation of secondary workpiece 6 is not ajusted.

When there is the case where askew secondary workpiece 6 are put or put in leakage, microcontroller controls the actuating of relay, and relay conducting will Alarm powers on, alarm obtain it is electric send out alarm signal, put secondary workpiece 6 to remind worker to mend or ajust secondary workpiece 6, keep away Exempt from the case where solder skip, wrong weldering occur, to prevent malfunctioning, improves the yields of tail boom assembly.

If not alarming, worker can then control welding robot and carry out automatic welding, complete the weldering of tail boom assembly Connect molding work.

In the present embodiment, effect is preferably reminded to play, with reference to Fig. 2, indicator light is also equipped on each group sub-folder tool 4 408, with reference to Fig. 3, which further includes instruction driving circuit, indicates the signal of the input terminal connection microcontroller of driving circuit Output end indicates the output end connection indicator light 408 of driving circuit.

When there is sub-folder tool 4 not clamp secondary workpiece 6, microcontroller control sends out electric signal control instruction driving circuit driving should Indicator light 408 on fixture lights, and worker is facilitated to investigate.

In the present embodiment, instruction driving circuit is amplifying circuit.

In addition, the leak detection system further includes the display screen being connect with microcontroller, display screen can concentrate real-time display each group The working condition of sub-folder tool 4 understands welding process convenient for worker.Here display screen is LCD display.

With reference to Fig. 4, power module includes rectification circuit, filter circuit and regulator circuit, the output end connection of rectification circuit The input terminal of filter circuit, the input terminal of the output end connection regulator circuit of filter circuit, the output end of regulator circuit is power supply The output end of module.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (7)

1. a kind of tail boom assembly welding fixture leak detection system, including fixed frame, main clamp and multigroup sub-folder tool, it is characterized in that：Institute It states sub-folder tool and includes the fixed arm being fixed on fixed frame and the lever arm being rotatablely connected by connecting shaft and fixed arm, it is described Connecting shaft is connected and fixed with lever arm, and the lever arm is driven by pressure cylinder, and angular transducer, institute are fixed on the fixed arm Shaft and the connecting shaft for stating angular transducer are coaxially connected, and the position contacted with secondary workpiece on the lever arm is equipped with pressure biography Sensor, the leak detection system further include microcontroller, alarm control circuit, alarm and power module, the alarm control circuit Control signal input connection microcontroller control signal output, the alarm connect and to be controlled by controlling alarm electric The output end of road, the angular transducer and pressure sensor is connect with the sample port of microcontroller.

2. tail boom assembly welding fixture leak detection system according to claim 1, it is characterized in that：It is also filled on each group sub-folder tool There is indicator light, which further includes instruction driving circuit, the letter of the input terminal connection microcontroller of the instruction driving circuit The output end of number output end, the instruction driving circuit connects indicator light.

3. tail boom assembly welding fixture leak detection system according to claim 1, it is characterized in that：The leak detection system further include with The display screen of microcontroller connection.

4. tail boom assembly welding fixture leak detection system according to claim 1, it is characterized in that：The alarm is acousto-optic report Alert device.

5. tail boom assembly welding fixture leak detection system according to claim 1, it is characterized in that：The alarm control circuit is Relay, the relay are connected in the electric power loop of alarm.

6. tail boom assembly welding fixture leak detection system according to claim 2, it is characterized in that：The instruction driving circuit is Amplifying circuit.

7. tail boom assembly welding fixture leak detection system according to claim 1, it is characterized in that：The power module includes whole Current circuit, filter circuit and regulator circuit.