JPS6262591A - Method and apparatus for detecting improper insertion - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method and device for inserting irregularly shaped parts such as ICs and IFT coils, and particularly to a method for automatically reinserting parts when the parts are inserted incorrectly. The present invention relates to a suitable insertion failure detection method and device.

[Background of the invention]

Conventionally, for example, a glue-r ray detection device for electronic components, etc., which detects whether or not an electronic component is inserted into a printed circuit board after inserting it into a printed circuit board, and fixes it to the printed circuit board, is disclosed in, for example, Japanese Patent Laid-Open No. 55 -43837
It is proposed in the Publication No.

However, in the above proposal, when an electronic component is inserted incorrectly, the insertion device is stopped and the electronic component is manually removed, and no consideration is given to automatically reinserting the electronic component.

In order to automatically reinsert an electronic component, it is necessary to detect insertion failure on the top surface of the printed circuit board and to transport the defective component to a defective product storage area without releasing the grip.

In contrast, with conventional devices, when detecting insertion failure, it is difficult to adjust the component pressing force when the insertion rod (which presses the electronic component to insert it into the insertion hole) descends. , poor judgment may occur. In other words, if the pushing force of the insertion rod is too strong, the lead wire of the electronic component may be bent due to incorrect insertion, and if the pushing force is too weak, the pushing force necessary for inserting the lead wire of the electronic component may not be obtained. That's because there isn't.

[Purpose of the invention]

The present invention eliminates the above-mentioned conventional drawbacks, makes it possible to detect insertion length and defects on the insertion side of the printed circuit board, and enables automatic reinsertion without bending the lead wires of electronic components in the case of insertion defects. An object of the present invention is to provide a method and device for detecting insertion failure.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention inserts the tip of a lead wire of an electronic component into the tip of a chuck that grips it, detects the difference in height of the electronic component, and determines whether the inserted product is good.
In addition, when the insertion length is exceeded, the chuck is opened, and when the insertion is defective, the chuck is closed, the electronic component is carried to the defective product removal position, and a new electronic component is reinserted, and when detecting the difference in height of the electronic component. , the pusher is lowered, the lead wire of the electronic component is detected with a relatively weak pressing force that does not bend, and when the insertion length is reached, the electronic component is inserted with the pressing force necessary for insertion. It is.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. As shown in FIG. 1, in FIG. 1(a), the lead wire 3 of an electronic component 2 such as an electronic component 2 is chucked by the chuck 1 so as to protrude slightly beyond the tip of the chuck 1, and is inserted into the insertion hole 5 of the printed circuit board 4. Then, as shown in FIG. 1(C), the nosher block 6 is lowered and inserted into the normal position.

However, as shown in Figure 1(b), the insertion failure occurs when the printed circuit board 4
If the IJ lead wire 3 is not inserted into the hole 5, the lead wire 3 protruding from the tip of the chuck 1 will hit the top surface of the printed circuit board 4 and be returned to the normal state shown in FIG. A step t occurs in the height. This step TTL is detected by the operation of the gripper 6. The insertion head according to the present invention is used in the second embodiment. Chuck l the lead 3 of the electronic component 2 shown in Figure 3.
grip by. The lead wires 3, 3' are spread outward in advance in a V-shape (see Figure 1 (d)).When the chuck 1 grips the lead wires 3, 3', the lead wires 3, 3'
The reaction force is supported.

The position where the lead wire is gripped by the chuck 1 is such that the tip of the lead wire slightly protrudes from the chuck 1.

The chuck 1 is rotatably supported by a fulcrum pin 10. What about fulcrum pin 10? It is attached to Tux 11. The chuck 1 is housed in the hole 11 of the GEX 11. A pin 12 is attached to the upper end of the chuck 1, and a roller 13 is rotatably attached.

A bolt 14 is installed between the chuck 1 and the chuck 11 so as to press the roller 13 against the cam 15. Cam 15 is attached to piston 16. Gex 11
is attached to the upper and lower blocks 17, and the upper and lower blocks 17 have a cylindrical hole 18 that engages with the piston 16 to form a cylinder. Therefore, by alternately inflowing air pressure from arrows 19 and 20, the piston 16 is reciprocated up and down. Then, the cam 15 moves up and down, so the chuck 1 moves to the fulcrum pin 10.
Rotate using the fulcrum as a fulcrum. Lower the cam 15 and lead 3,
3', and adjust the pitch P between the leads at that time using the adjuster 21. There is another cylindrical hole 22 in the upper and lower blocks 17, which engages a piston 23 to form a cylinder. The piston 23 is fixed to a vertical guide support 24. The upper and lower guide support 24 has an idper 2
5 is fixed, and its guide bar 25 and upper and lower blocks 17
are combined in a slidable manner. Therefore, if air pressure is alternately introduced from the arrows 26 and 27, the upper and lower blocks 17 will move up and down, and as a result, the part 2 will be lowered in the direction of the glint board 4.
Further, after insertion, the chuck can be raised. A bracket 30 is attached to the upper and lower blocks 17.

A gusset cylinder 31 is attached to the bracket 30. Piston rod 32 of bushing cylinder 31
A block 33 is attached to the. block 33
The shock absorber 34 is attached to the VC rod 35.
A cap 36 is attached to the tip of the bracket 30 and abuts against a stop 37 that protrudes from the bracket 30. block 33
A T-shaped hole 38 is formed in. A collar 39 that fits into the T-shaped hole 38 and prevents its descent is attached *4
0 is included. Washer 42.4 on rod 40
3 is incorporated, and a washer 43 is supported by a nut 44. A spring 41 is installed between washers 42 and 43. The rod 40 includes the upper and lower blocks 17, the piston 16, and the cam 15.
A button block 6 is attached to the tip through the hole formed in the hole.

Further, a proximity sensor 51 is attached to the block 33. From the above configuration, the lead 3 of the electronic component 2 is connected to the chuck 1.
is chucked so that it slightly protrudes from the tip of the chuck L, and air pressure is applied from the arrow 26 to lower it in the direction of the substrate 4 and insert it. Thereafter, when air pressure is introduced in the direction of arrow 53 and the piston rod 32 is lowered, the block 33 is lowered at a substantially constant speed by the shock absorber 34, and therefore the rod 40 starts lowering. In this state, block 33 and brim 39
As the pusher block 6 continues to descend while maintaining the clearance L with the top surface, the pusher block 6 hits the electronic component 2, and as it descends further, the clearance L is reduced, and the block 33 and the collar 3
9 hits. The pressing force on the component 2 while maintaining the clearance L is determined by the strength of the pins 41. The spring 41 has a buckling strength that is weaker than that of a single lead of the lead wire 3. Therefore, the lead 3 of the component 2 is not bent before the collar 39 abuts against the block 33. but,
Since a strong pressing force is required for insertion, as a result, when the collar 39 hits the block 33, it is pressed with a force obtained by subtracting the resistance of the shock absorber 34 from the descending force of the cylinder 31 to obtain the force necessary for insertion. . Here, the method of detecting the insertion length and defect is as explained in FIG. reaches, and the gap L is reduced.

There will be a time difference. If this time is calculated in advance to determine the insertion length and the value at the time of a defective insertion and input it into the detection control system as a parameter, it becomes possible to detect the insertion length and the defective insertion according to the control flow shown in FIG. A proximity sensor 51 detects whether the collar 39 hits the block 33 or not. 70- in FIG. 4 will be explained. Lower the chuck. After the chuck reaches the substrate surface and stops, the sticky block 6 is lowered. Thereafter, the ON state of the proximity sensor is monitored within a set time, and if the proximity sensor is turned ON within the set time, it is determined that the insertion is defective, and if the proximity sensor is not ON within the set time, it is determined that the insertion is long. When the insertion length is reached, the block 33 further descends and abuts against the collar 39, thereby obtaining the pressing force necessary for insertion. If the insertion is defective, the lowering of the pusher block 6 is immediately stopped, the chuck is raised, one part 2 is removed to the defective part removal position (not shown), and a new part is reinserted.

Next, the timing diagram shown in FIG. 5 will be explained.

When the cylinder 31 is lowered and the proximity sensor 51 turns ON within seconds from that point, it is an insertion error, so issue a command as shown by arrow m to stop the cylinder 31 from lowering and raise it (as shown by the dotted line). ). If the proximity sensor 51 does not turn on for t seconds, the insertion length has been reached, and the cylinder 31 continues to descend to the home position. Therefore, the proximity sensor 51 is finally turned on.

In the above example, only the part where the electronic component is inserted into the printed circuit board is described. It is configured such that it can be gripped with a chuck and transported onto the printed circuit board 4.

〔Effect of the invention〕

According to the present invention, the insertion length on the top side of the printed circuit board.

This has the effect of making it possible to detect defects, and in the event of a defective insertion, automatically reinserting the component without causing damage such as bending the lead of the component.

[Brief explanation of the drawing]

Figure 1 is a diagram explaining the insertion length of parts and the state of defects (
) shows the insertion is successful, (b) shows the insertion is bad, (C) shows the state when the insertion is successful and is further inserted into the correct position, FIG. 2 is a partial front view of the insertion head according to the present invention, and FIG. FIG. 2 is a cross-sectional view of the E part in the direction of arrows, FIG. 4 is an explanatory diagram of the insertion length and defect detection flow, and FIG. 5 is an explanatory diagram showing a timing diagram. 1... Chuck, 6... Bushlock, 17.
・・Upper and lower block, 34・・Shock absorber,
41... Spring, 51... Proximity sensor. Agent Patent Attorney Tadashi Akimoto Figure 1 (.)
(b) (C) Figure 2 A Figure 3 11111d4

Claims (1)

[Claims] 1. In a method of inserting an end of a component into a member that supports it, the component is moved toward the member by a chuck that grips the tip of the component so as to protrude; When the part reaches the end surface of the part, press the part with a weak pressure that does not cause the tip of the part to bend during insertion.The height of the part at this time determines whether the part has been inserted successfully or not, and then inserts the part. If the part is good, continue to press the part with a force stronger than the above pressure force and insert the tip into the part. If the insertion is bad, stop pressing the part and use the chuck to move the part to the defective product removal position. A method for detecting insertion failure characterized by transporting a new part, gripping it, and inserting it into a member. 2. In a device for inserting an end of a component into a member that supports it, the component is held by a mechanism that transports the component between a component storage area, a defective component discharge position, and a position above the component, with the tip thereof protruding. a chuck that grips the chuck, a mechanism that moves the chuck toward the component, a pusher block that presses the component, a mechanism that moves the pusher block at a constant speed, and a mechanism that changes and adjusts the pressing force of the pusher block. and a mechanism that detects the height position of the component via the pusher block, and detects whether the component is inserted correctly or poorly based on the height of the component when it is inserted into the component, and if the component is inserted incorrectly, the part is damaged. An insertion defect detection device characterized in that the device is configured to transport a non-defective component to a non-defective removal position and insert a new component.