CN201177759Y

CN201177759Y - Positioned detection apparatus for automatic welding clamp

Info

Publication number: CN201177759Y
Application number: CNU2008200980870U
Authority: CN
Inventors: 李伟红; 房志林
Original assignee: Lianwei Automobile Part (chongqing) Co Ltd
Current assignee: Lianwei Automobile Part (chongqing) Co Ltd
Priority date: 2008-04-18
Filing date: 2008-04-18
Publication date: 2009-01-07
Anticipated expiration: 2018-04-18

Abstract

The utility model relates to a positioning detecting device for an automatic welding fixture, which comprises detecting elements SQ1-SQn and detection control circuits. The second pin of the SQ1-SQn is connected with the anode of a power supply; the first pin of the SQ1-SQn is connected with the cathode of the power supply; the third pin is connected with the first pin of light emitting diodes D1-Dn; the second pin of the D1-Dn is connected with the cathode of the power supply after being connected with a resistor R2, and also connected with the base electrode of a triode T9013; the collecting electrode of the T9013 is connected with the base electrode of a T9014; static biasing is provided via a resistor R3; the emitting electrodes of both the T9013 and the T9014 are connected with the cathode of the power supply; the working states of a relay ZJ and an operation indicating lamp are controlled through the conduction or cut-off of the collecting electrode of the T9014; the normally closed contact of the ZJ is connected with an audible and visual alarm; and the normally open contact of the ZJ is connected with a control circuit. The positions of the welding parts on the fixture and the part neglected-loading condition can be reliably detected, and meanwhile, the conditions of the detecting elements SQ1-SQn can be automatically detected.

Description

A kind of robotization weld jig locating and detecting device

Technical field

The utility model relates to a kind of location detecting technology, is specifically related to a kind of to the automatic weld jig positioned detection of automobile component device.

Background technology

The automobile structure welding is produced and is all adopted anchor clamps assembling, location, and whether the location of anchor clamps is accurate, and whether part is seated the quality problems that are related to workpiece in the whole production.If anchor clamps are not the workpiece fix in position, or the part neglected loading, during the product welding defectives such as deviation, missing part will appear.The method of separating decision bit, missing part at present is with register pin and manually marks modes such as inspection, all has certain defective.Wherein use the register pin positioning action loaded down with trivial details, efficient is low, and register pin is easy to wear; And manually mark the missing part problem of checking, and workload is big, requires operating personnel conscientious, careful, product is familiar with, and strong sense of responsibility, higher and product quality is difficult for guaranteeing to operator's competency profiling.

The utility model content

The purpose of this utility model is to provide a kind of robotization weld jig locating and detecting device, with location and the missing part problem that solves anchor clamps well at the problem of prior art existence.

The technical solution of the utility model is as follows:

A kind of robotization weld jig locating and detecting device, by the detecting element SQ1～SQn on each clamping head that is installed in anchor clamps, the detection control circuit and the Programmable Logic Controller (PLC) that are arranged in the control box are formed by described for it; The direct supply DC24V of described detection control circuit takes from the direct supply of PLC, 2 pin of described detecting element SQ1～SQn connect together and are connected with the positive pole of direct supply, 1 pin of SQ1～SQn connects together and is connected with dc power cathode, 3 pin of SQ1～SQn connect with 1 pin of corresponding light emitting diode D1～Dn respectively, 2 pin of D1～Dn also connect series connection one resistance R 2 back and are connected with the negative pole of direct supply, 2 pin of D1～Dn and connect after also link to each other with the base stage of a triode T9013 by a resistance R 1, the collector of triode T9013 is connected with the base stage of another triode T9014, the emitter of triode T9013 and triode T9014 all joins with the negative pole of power supply, the collector of triode T9013 links to each other with 1 pin of relay ZJ by

resistance R

3,2 pin of triode T9014 are connected with 1 pin of relay ZJ, and the 2 pin serial connection insurance BX of relay ZJ and the positive pole of switch LK and direct supply join; One end of a pair of normally closed contact of relay ZJ is connected with 2 pin of relay ZJ, the other end of this normally closed contact alarm HA that connects is connected with the negative pole of direct supply, and a pair of normally opened contact of relay ZJ is serially connected between described PLC input contact and the dc power cathode.

The principle of work of this device is as follows:

Install workpiece on the anchor clamps, during the anchor clamps holding workpiece, detector switch SQ1～SQn and light emitting diode D1～Dn devote oneself to work, SQ1～SQn forms the transistor OR circuit, when arbitrary detector switch does not detect workpiece among SQ1～SQn, light emitting diode is output as high level, corresponding light emitting diode lamp is bright, triode T9013 conducting, triode T9014 ends, and relay ZJ does not work, relay ZJ connects in normally closed loop alarm HA and reports to the police, relay ZJ normal open circuit disconnects the input of PLC no signal, and the robotization welding condition does not satisfy, and robot and slide unit are not worked; As SQ1～when the SQn detector switch all detects workpiece, light emitting diode is output as low level, D1～Dn light emitting diode does not all work, and triode T9013 ends, triode T9014 conducting, relay ZJ work, run indicator L is bright, and the normally closed loop of relay ZJ disconnects alarm HA does not work, and the closed PLC of relay ZJ normal open circuit has the signal input, the robotization welding condition satisfies, and robot and slide unit are started working.

This pick-up unit has following advantage:

This device can detect the position and the part neglected loading situation of soldering part on the anchor clamps reliably, and it detects output signal as robotization welding condition (as the input signal as robotization welding Programmable Logic Controller PLC), directly controls the robotization welding.Leakage weldment or the parts fixation product defects not in place that can effectively avoid human negligence to cause, but self check simultaneously detects the fine or not situation of components and parts SQ1～SQn.This pick-up unit low cost of manufacture is installed and used simply, and easy operating is safeguarded.

Description of drawings

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is the utility model scheme of installation;

Fig. 3 is the structural representation of a clamping head among Fig. 2.

Embodiment

Referring to Fig. 2 and Fig. 3; these anchor clamps locating and detecting device is that (number of SQ is determined according to the number of the part that concrete needs detect by detecting element SQ1～SQ4; this figure is 4) and the detection control circuits that are arranged in the control box 3 form; detecting element SQ1～SQ4 adopts inductance type transducer; detecting element SQ1～SQ4 is installed on the fixed arm 21 of each clamping head 2 of anchor clamps 1; the swing arm 22 of clamping head 2 is driven by anchor clamps handle 23; close up or separate with fixed arm 21; in the whole anchor clamps 1 in the end the turning circuit of the detecting element SQ4 on clamping head be provided with travel switch LK; as shown in Figure 3; motion control by the swing arm 22 of this clamping head; when swing arm 22 when fixed arm 21 closes up; travel switch LK conducting makes the conducting of whole detection control circuit.

Referring to Fig. 1, it is circuit supply that direct supply DC24V takes from the PLC power supply, and the positive pole of direct supply inserts 2 pin of detecting element SQ1～SQn, and it is SQ1～SQn power supply that 1 pin of SQ1～SQn inserts dc power cathode.1 pin of 3 pin sending and receiving optical diode D1～Dn of SQ1～SQn, 2 pin of light emitting diode D1～Dn are connected to the light emitting diode power supply by resistance R 2 (10K) and power cathode.2 pin of D1～Dn are connected with 1 pin of triode T9013 by resistance R 1 (510), and the emitter of T9013 and power cathode are connected to triode the control power supply is provided.The collector of T9013 is connected with resistance R 3 with the base stage of triode T9014, resistance R 3 provides quiescent biasing for the collector of T9013 and the base stage of T9014, the emitter of T9013 and T9014 all joins with the negative pole of power supply, 1 pin of the collector of T9014 and relay ZJ, 1 pin of run indicator L is connected with power cathode, the conducting of T9014 collector or the duty of ending pilot relay ZJ and run indicator L, 2 pin of relay ZJ, 2 pin of run indicator L and relay contact 1 pin connect PLC power supply DC24V positive pole by insurance BX and switch LK, relay ZJ contact 2 pin are connected with 1 pin of alarm HA, 2 pin of alarm HA and power cathode are connected to alarm provides power supply, relay ZJ contact 3 pin connect PLC input contact, and relay ZJ contact 4 pin connect power cathode.The normally closed contact that is relay ZJ connects audible-visual annunciator, and the normally opened contact of ZJ connects the control circuit of automatic welding equipment.

Claims

1, a kind of robotization weld jig locating and detecting device is characterized in that: it is by the detecting element SQ1～SQn on each clamping head that is installed in anchor clamps, and detection control circuit and a Programmable Logic Controller PLC of being arranged in the control box form; The direct supply DC24V of described detection control circuit takes from the direct supply of PLC, 2 pin of described detecting element SQ1～SQn connect together and are connected with the positive pole of direct supply, 1 pin of SQ1～SQn connects together and is connected with dc power cathode, 3 pin of SQ1～SQn connect with 1 pin of corresponding light emitting diode D1～Dn respectively, 2 pin of D1～Dn also connect series connection one resistance R 2 back and are connected with the negative pole of direct supply, 2 pin of D1～Dn and connect after also link to each other with the base stage of a triode T9013 by a resistance R 1, the collector of triode T9013 is connected with the base stage of another triode T9014, the emitter of triode T9013 and triode T9014 all joins with the negative pole of direct supply, the collector of triode T9013 links to each other with 1 pin of relay ZJ by resistance R 3,2 pin of triode T9014 are connected with 1 pin of relay ZJ, and the 2 pin serial connection insurance BX of relay ZJ and the positive pole of switch LK and direct supply join; The end of a pair of normally closed contact ZJ1 of relay ZJ is connected with 2 pin of relay ZJ, the other end of this normally closed contact alarm HA that connects is connected with the negative pole of direct supply, and a pair of normally opened contact ZJ2 of relay ZJ is serially connected between described PLC input contact and the dc power cathode.

2, anchor clamps locating and detecting device according to claim 1 is characterized in that: described detecting element SQ1～SQn adopts inductance type transducer, a relay ZJ run indicator L in parallel.