JPH0914944A - Inspection device for insert work - Google Patents

Abstract

PURPOSE: To reduce the load on a work to be inspected and to prevent the value of a molding from decreasing by fixing an air block where a space part has been formed, at a substrate which is mounted to a rise/fall shaft. CONSTITUTION: When air is injected from a compressor to a space part 7 via a solenoid valve, the upper end face of a flange part 15 of a detection pin 14 is injected to air force and the detection pin 14 is energized downward, and hence the inspection pin 14 surely returns. Then, a valve for releasing air of the solenoid valve is operated and air injected into the space part 7 is released to the atmosphere, thus eliminating air force operated on the flange part 15 of the inspection pin 14. Then, a rise/fall shaft 1 is lowered and the lower edge of the inspection pin 14 is brought into contact with an insert work 107 of a molding S. Further, when the rise/fall shaft 1 is lowered, the detection pin 14 relatively rises in the space part 7 and the top part of the detection pin 14 approaches a proximity switch 16, thus turning on the switch 16 and confirming the presence of the work 107 and judging that the work is a conforming article.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for inspecting whether an insert work is surely insert-molded by insert molding or the like, and in particular, the insert work is a thin needle-shaped body, The present invention relates to an inspection device that is effective for things where the tip of the insert work is sharp.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. A box-shaped head 101 having a space inside is fixed to the lower end of a lifting shaft (not shown).
1, a detection pin 102 is arranged so as to be vertically movable.
A collar 103 is formed in the middle of the detection pin 102, and the collar 103 is located in the space of the head 101. Further, the detection pin 102 is the head 1
The coil spring 104 arranged in the space 01 is always urged downward. On the other hand, the detection pin 10
Proximity switch 105 is arranged at a position facing above 2 above. The proximity switch 105 is fixed to an intermediate portion of the lifting shaft via a bracket 106. Reference numeral 107 denotes an insert work having a plurality of sharp tips which are inserted upwardly by insert molding on the upper surface of the molded product S as shown in FIG.

Next, the operation will be described. As shown in FIG. 5, the inserted molded product S to be inspected is transferred to the head 10
It is located below 1. Next, the elevating shaft is lowered to lower the head 101 and the proximity switch 105. With this lowering, the detection pin 102 is moved to the insert work 1
Abut the top of 07. Here, when the elevation shaft is further lowered, the detection pin 102 relatively rises against the repulsive force of the coil spring 104, and the top of the detection pin 102 approaches the proximity switch 105. Then, the proximity switch 105 is turned on by this approach, and the existence of the insert work 107 is confirmed, and it is judged as a non-defective product (see FIG. 6). On the other hand, if the insert work 107 does not exist due to an insert molding error, the detection pin 102 does not rise, so that the proximity switch 105 does not turn on and it is determined that the product is defective.

[0004]

[PROBLEMS TO BE SOLVED BY THE INVENTION] Insert work 10
No. 7 having a high rigidity can be used without any problem, and as described above, a problem occurs with the insert work 107 having a sharp tip. Since the detection pin 102 is biased downward by the coil spring 104, the resilient force of the coil spring 104 is applied to the tip of the insert work 107, and the tip of the insert work 107 is bent. . Further, even if the insert work 107 has a thin needle-like body or the like, the insert work 107 is bent from the middle portion, and the value as a product is significantly reduced. Although it is possible to simply remove the coil spring 104 and rely on the return movement of the detection pin 102 by its own weight, the return movement is uncertain and there is a high risk of malfunction (detection). There was a point.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an air block having a space formed therein is fixed to a base attached to a lifting shaft, and air is supplied to the air block. Inject and connect a valve mechanism to release the injected air, and arrange a plurality of detection pins in the air block so that it can move up and down corresponding to the insert work on the upper surface of the molded product. A detection means for confirming the operation of the detection pin is arranged on the upper part of the block, and a molded product is arranged on the lower side of the air block.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described with reference to FIGS. 1 and 2. A base 2 is fixed to the lower end of the lifting shaft 1 by bolts 3 and the like, and an air block 6 including a lower member 4 and an upper member 5 is fixed to the base 2. Although the space 7 is formed inside the upper member 5, the space 7 may be formed in the lower member 4 without being caught by the space 7. Alternatively, the space 7 may be formed inside both the lower member 4 and the upper member 5. May be. Reference numeral 8 is a guide member for positioning the molded product to be inspected. A socket 9 having an air passage communicating with the space 7 is fixed to the upper member 5 of the air block 6. An electromagnetic valve 11 is connected to the socket 9 via an air tube 10. A compressor 12 for injecting air into the space 7 is connected to the electromagnetic valve valve 11. The electromagnetic valve 11 is provided with a valve for performing an operation of injecting air into the space 7 or conversely opening the air injected into the space 7 to the atmosphere.

A plurality of holes 13 are formed in the lower member 4 of the air block 6, and detection pins 14 are slidably arranged in the plurality of holes 13. Further, a flange portion 15 is formed on the upper end portion of the detection pin 14, and the lower member 4
From falling off. On the other hand, the air block 6
The upper member 5 has detection means 16 such as a proximity switch and a limit switch at a position facing above the detection pin 14.
Are placed and fixed. The detection means 16 is for confirming the operation of the detection pin 14. In the present embodiment, the detection means 16 are provided in the same number to face the respective detection pins 14, but the number may be reduced depending on the molded product to be inspected. That is, two insert works may be inspected by one detecting means.

Next, the operation will be described. First, in order to surely return (return) each detection pin 14 from the state of FIG.
Air is injected into the space 7 from the compressor 12 via the electromagnetic valve valve 11. When air is injected into the space 7, the upper end surface of the flange 15 of the detection pin 14 receives the force of the air and the detection pin 14 is urged downward. This surely returns the detection pin 14 (see FIG. 1). Next, the valve for opening to the atmosphere of the electromagnetic valve valve 11 is operated to open the air injected into the space 7 to the atmosphere. As a result, the pressure of the air acting on the collar portion 15 of the detection pin 14 disappears.

Next, the elevating shaft 1 is lowered to bring the lower end of the detection pin 14 into contact with the insert work 107 of the molded product S. When the elevating shaft 1 is further lowered, the detection pin 14 is relatively moved. As a result, it rises in the space 7, and the top of the detection pin 14 approaches the proximity switch 16. Then, due to this approach operation, the proximity switch 16 is turned off.
The presence of the insert work 107 is confirmed and the product is judged to be non-defective (see FIG. 4). On the other hand, if the insert work 107 does not exist in the molded product S due to an insert molding error, the detection pin 14 does not relatively move up, so the proximity switch 16 does not turn ON, and it is determined that the product is defective.

In the process of raising the detection pin 14, only the weight and sliding resistance of the detection pin 14 are at the tip of the insert work 107, so that such load can be minimized. It is possible. That is,
The action for returning the detection pin 14 is completely different from the insert work 107 in the actual inspection process.

[0011]

According to the present invention, an air block having a space formed therein is fixed to a base attached to a lifting shaft, and a valve mechanism for injecting air into the air block and opening the injected air is connected. , A plurality of detection pins are arranged in the air block so as to be vertically movable corresponding to the insert work on the upper surface of the molded product, and a detection means for confirming the operation of the detection pins is provided on the upper part of the air block corresponding to the detection pins. Since the molded product is disposed under the air block, the load on the work to be inspected can be prevented as much as possible, and thus the value of the molded product is not reduced.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment of the present invention.

FIG. 2 is a top view of the air block of FIG.

3 is a front view of means for injecting and releasing air into the air block of FIG. 1. FIG.

FIG. 4 is a front view of the inspection of FIG.

FIG. 5 is a front view of a conventional device before inspection.

FIG. 6 is a front view of the inspection of FIG.

FIG. 7 is a front sectional view of a molded product.

[Explanation of symbols]

 1 Lifting shaft 2 Base 6 Air block 7 Space 9 Socket 10 Air tube 11 Solenoid valve valve 12 Compressor 13 Hole 14 Detecting pin 15 Collar 16 Detecting switch S Molded product 107 Insert work

Claims (1)

[Claims] 1. An air block in which a space is formed is fixed to a base attached to a lifting shaft, and a valve mechanism for injecting air and releasing the injected air is connected to the air block, and an upper surface of a molded product is connected. Corresponding to the insert work of, a plurality of detection pins are movably arranged in the air block,
An insert work inspection device characterized in that a detection means for confirming the operation of the detection pin is arranged above the air block corresponding to the detection pin, and a molded product is arranged below the air block.