JPH09183525A - Device for inserting protection sheet between plate-form objects - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction device which is movable both in the horizontal direction and vertical direction and can take out each of protection sheets in the condition stationary in the stacked position one after another without using any elevator. SOLUTION: A protection sheet inserting device concerned is to suck stacked protection sheets 2 from above and insert one by one into gap between plate- form objects and includes a supporting piece 9 which is moved in the vertical direction by a slide type air cylinder device 7, wherein the supporting piece 9 is equipped with at least two protection sheet sucking pads 1 suspended through a spring 4, a sheet lever sensor 3 suspended through another spring 8, and a sensor 6 which controls the operation of the air cylinder 7 through checking of the sensing level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for inserting a protective sheet between plate-like objects such as lead frames in the process of laminating the plate-like objects.

[0002]

2. Description of the Related Art A lead frame is generally used with its middle portion bent. As shown in FIG. 3, when storing the lead frame having the middle portion bent, the protective sheet 2 in which the portion 2'corresponding to the bent portion of the lead frame 5 is punched is inserted between the lead frames 5 as shown in FIG. Then stack and store.

Usually, when inserting such a protective sheet, the surface of the uppermost protective sheet piled up is adsorbed by an adsorbing device that horizontally moves, and then horizontally moved to a predetermined position on the lead frame to adsorb. The method of unraveling and mounting on the lead frame is taken. For this reason, the protective sheets have been lifted to a certain position by an elevator from the bottom of the stacked sheets, and suctioned and moved.

[0004]

However, the elevator device is expensive and requires maintenance and inspection.
In addition, it may be difficult to use the elevator due to space restrictions.In such a case, suction and move the suction devices one after another with the protective sheet still at the stacking position without raising. There has been a demand for the development of such a simple insertion device.

The present invention was developed in response to the above-mentioned demands, and the protective sheets can be taken out one after another in a horizontal state and a vertical direction so that the protective sheets can be taken out one after another in a state of being kept in a stacked position without using an elevator. It is an object of the present invention to provide a movable suction device. To

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the present invention is designed to adsorb stacked protective sheets from above and to insert the protective sheets one by one between plate-like objects. An apparatus, at least two protective sheet suction pads suspended by springs on a support that moves up and down by a slide type air cylinder device, a protective sheet level detector suspended by springs, and a detection level And a sensor for controlling the operation of the slide type air cylinder, and a protective sheet insertion device for a plate-like object.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an outline of a protective sheet insertion device of the present invention. As shown in FIG. 1, the protective sheet insertion device includes a plurality of air suction type spring suspension suction pads 1 and the suspension pads. In order to move up and down the spring suspension protection sheet level detector 3 arranged between the two, the sensor 6 arranged in the vicinity of and above the spring suspension protection sheet level detector 3, and the support 9 on which these are mounted. Slide air cylinder 7
And the suspension springs 4 and 8 for the suction pad 1 and the protective sheet level detector 3. In addition, 2 is a protective sheet. On the other hand, the slide type air cylinder 7 can move the support 9 to a lead frame stacking position (not shown) while the protective sheet 2 is suction-held.

FIG. 2 is a diagram for explaining the operation of the apparatus shown in FIG.
In FIG. 2, the operation of the apparatus of FIG. 1 will be described. When the slide cylinder 7 is operated to lower the support 9, the tip a of the protective sheet level detecting detector 3 is placed on the upper surface of the protective sheet 2. Contact. When the support 9 continues to descend due to the operation of the slide cylinder 7, the protective sheet level detector 3 moves upward against the spring 8 and when its upper end reaches the level of the sensor 6, The position is detected by the sensor 6. In this state, the sensor 6 sends a detection signal to a control unit (not shown). As a result, a double solenoid type solenoid valve (not shown) is actuated, air is added from both sides of the slide type cylinder 7, and the cylinder 7 stops so that the support 9 is at a position slightly lower than the detection position.

At this time, the lower surface of the suction pad 1 is pressed against the upper surface of the protective sheet 2, and the protective sheet 2 is adsorbed by operating air. In this case, since the suction pad 1 is suspended by the spring 4, even if there is a delay in stopping the lowering of the support body 9 by the slide type cylinder 7, unreasonable stress is not applied,
Therefore, damage to the suction pad 1 is prevented.

When the adsorption of the protective sheet 2 by the adsorption pad 1 is completed, the solenoid valve is switched and the slide type air cylinder operates in the relative direction to raise the support 9, and the adsorption pad 1 adsorbs the protective sheet 2. When the lead frame 5 is moved to the lead frame stacking position (not shown) in the held state and reaches the lead frame 5, the suction air of the suction pad is stopped to release the suction, and the protective sheet is placed on the lead frame 5. Placed. On top of this, lead frame 5
The protective sheet 2 as shown in FIG. 2 can be inserted between the lead frames 5 by placing the sheet and repeating the operation.

[0011]

As described above, according to the protective sheet inserting device of the present invention, the protective sheet can be easily and surely inserted into the lead frame without using an expensive device such as an elevator. Therefore, not only is it economical, but the industrial value is great because the protection sheet can be inserted even in a place where there is no room to install an elevator.

[Brief description of the drawings]

FIG. 1 is a side view showing an outline of a protective sheet insertion device of the present invention.

FIG. 2 is an explanatory diagram of the operation of the apparatus of FIG. 1;

FIG. 3 is a side view showing a state where a protective sheet is inserted into a lead frame.

[Explanation of symbols]

 1 Suction pad 2 Protective sheet 3 Protective sheet Level detector 4 Spring 5 Lead frame 6 Sensor 7 Sliding air cylinder 8 Spring 9 Support a Tip

Claims (1)

[Claims] 1. A device for adsorbing stacked protection sheets from above and inserting the protection sheets one by one between plate-like objects, the support being vertically movable by a slide type air cylinder device. And at least two protective sheet suction pads suspended via springs, a protective sheet level detector suspended via springs,
A protective sheet insertion device for a plate-like object, comprising a sensor for confirming a detection level and controlling the operation of the slide type air cylinder.