JPH09240625A - Film strip heating and molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize heating and improve the quality of molding work in a film strip heating and molding apparatus when the emboss molding of a carrier tape or the like receiving chip component is carried out. SOLUTION: An upper heating body 1 with a built-in upper heater and a lower heating body enclosing therein a lower heater are provided adjacent to a molding punch 5 and molding die 6 for molding a film strip 8 to sandwich the film strip 8. The satisfactory maintenance property and high quality molding are provided by constituting a mechanism for heating the upper and lower heating bodies 1, 2 with cams 15, 16 placed close thereto and a mechanism for separating the upper heating body 1 and the lower heating body 2 from the film strip by an air cylinder 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-shaped film thermoforming apparatus for embossing a carrier tape or the like for accommodating chip parts.

[0002]

2. Description of the Related Art A conventional band-shaped film thermoforming apparatus will be described with reference to the drawings.

FIG. 4 is a partial front sectional view of a main part of a conventional band-shaped film thermoforming apparatus. In FIG. 4, a belt-shaped film 27 wound in a roll shape (not shown) is taken out, and a heater 2 having heaters 30 and 31 for heating is incorporated.
The forming portion of the strip-shaped film 27 is heated from above and below by 9, 32, and the strip-shaped film 27 is fed by a feeding mechanism (not shown).
Is moved in the direction of the arrow at a constant pitch, and then the forming punch 25
The embossed portion 28 is formed on the heated portion of the strip film 27 by the forming die 26.

The heating elements 29, 32 are arranged above and below the strip film 27, and when heated, move toward the strip film 27 simultaneously in the directions of the arrows, and contact portions 33, 32 on the upper and lower surfaces of the strip film 27, respectively. 34 contact and are heated to the molding temperature.

Further, the heating elements 29 and 32 and the forming punch 25,
The molding dies 26 are arranged adjacent to each other, and both of them move and move substantially in synchronism with each other while maintaining a gap A having a constant size.

When the apparatus is stopped, the heated strip-shaped film 27 is always transferred to the forming punch 25 and the forming die 26 to complete the forming of the embossed portion 28. Further, the heating operation is not performed in the one step before the stop, and the heating elements 29, 32 are stopped at the positions sandwiching the strip film 27. At the time of starting, only the first step is the forming punch 25 and the forming die 26.
The heating element 29, 32 is not formed by molding the embossed portion 28.
It is a device capable of intermittent operation that only performs heating operation by.

[0007]

In the above-described band-shaped film thermoforming apparatus, in shortening the molding cycle time and forming with a narrow pitch, the distance between the heating members 29 and 32 and the forming punch 25 and the forming die 26 shown in FIG. A cannot be made large because the required heating temperature is maintained.

Therefore, both surfaces of the strip-shaped film 27 are heated by the radiant heat of the heating members 29 and 32 as the stop time of the strip-shaped film thermoforming apparatus elapses, and the strip-shaped film 27 is heated by the heating in the first step at the time of restart. The temperature will not be constant.

Further, when the strip-shaped film thermoforming device is stopped for a long time, the embossed portion 28 of the final shaping of the strip-shaped film 27 is radiated by the adjacent heating elements 29, 32 to radiate heat.
No. 8 deformed and shrunk.

Further, in order to shorten the molding cycle time, the contact portions 33 and 34 are brought into contact with the strip-shaped film 27 and heated, so that the components of the strip-shaped film 27 are contacted with each other.
It was difficult to achieve constant and stable heating by attaching to the surface of No. 34.

The present invention is intended to solve such a problem, and an object thereof is to provide a belt-shaped film thermoforming apparatus which performs stable heating, is excellent in maintenance and molding man-hours, and has stable molding quality. Is.

[0012]

In order to solve the above-mentioned problems, a strip-shaped film thermoforming apparatus according to the present invention comprises a pair of punches to be processed and a pair of strips which are arranged adjacent to a die and which are to be transported. A heating element with a built-in heater,
A film guide for regulating and guiding a strip-shaped film having a hole through which the tip of the heating body is inserted, a drive mechanism for heating the pair of heating bodies closer to each other from above and below on the strip-shaped film, and separating the pair of heating bodies from the strip-shaped film. It is configured with a mechanism for making.

According to the present invention, stable heating is always possible, the maintenance of the apparatus and the number of molding steps can be improved, and the molding quality can be improved and stabilized.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a heating body having a pair of heaters, which is provided adjacent to a punch to be processed and a belt-shaped film which is disposed adjacent to a die and which is transported. , A film guide for regulating and guiding a strip-shaped film having a hole through which the tip of the heating body is inserted, a drive mechanism for heating the pair of heating bodies closer to the strip-shaped film from above and below, and the pair of heating bodies from the strip-shaped film. This is a band-shaped film thermoforming apparatus composed of a mechanism for separating the band-shaped film, and has an effect of being able to perform a constant and stable heating without damaging the band-shaped film.

According to a second aspect of the present invention, the drive mechanism for the heating element of the first aspect comprises a cam and a cam follower.
Stable operation of the heating element can be obtained.

According to a third aspect of the present invention, as a mechanism for isolating the heating element, the heating element is constituted by a moving plate which is slidably attached to the main body and a heating element including a drive mechanism is partially attached. It is possible to reliably prevent the deformation of the film by moving the heating body away.

An embodiment of the belt-shaped film thermoforming apparatus of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an essential part showing an outline of a belt-shaped film thermoforming apparatus according to the present invention, FIG. 2 is a positional relationship diagram between a heating body and a belt-shaped film taken along the line BB of FIG. 1, and FIG. It is a positional state figure of the heating body and the strip | belt-shaped film in a heating position.

FIG. 1 shows a belt-shaped film thermoforming apparatus, in which 1 is an upper heating element which is made of a heat conductive metal material, and has an upper heater 3 for heating at the center and a heating temperature setting at the bottom. The thermocouple 7 which is the temperature detecting sensor is incorporated. Similarly, reference numeral 2 denotes a lower heating body, which contains a lower heater 4 and a thermocouple (not shown).

The upper heating element 1 is attached to the upper mounting plate 11 via the upper heat insulating plate 9 made of a heat-resistant material and a defective heat conductor that prevents heat conduction. Similarly, the lower heating element 2 is attached to the lower attachment plate 12 via the lower heat insulating plate 10.

Reference numeral 5 is a forming punch, and 6 is a forming die, which is installed adjacent to the upper heating body 1 and the lower heating body 2 so as to be movable up and down, and forms a prescribed embossed portion on the heated portion of the strip film 8. . Reference numeral 8 is a strip-shaped film made of various resin materials, which is supplied from a wound reel (not shown), and is fed by a transfer mechanism (not shown) to the lower portion of the upper heating element 1 and the lower heating element 2.
It is inserted into a film guide 18 made of a heat-resistant material such as metal and provided with a square hole 18a arranged in the upper part and a slit 18b in the longitudinal direction and transferred.

Reference numeral 13 is a cam follower, which is an upper mounting plate 11.
Is rotatably attached to the upper end of the cam 15 and is in contact with the outer peripheral surface of the cam 15.
Is attached to the lower end of the cam 16 and is in contact with the outer peripheral surface of the cam 16. Then, by a drive mechanism (not shown) synchronized with the cams 15 and 16, the upper heating element 1 and the lower heating element 2 sandwich the strip-shaped film 8 at a fixed timing and stroke, and are fixed to the slide guide 21 in a T-shape. Of the upper mounting plate 11 or the lower mounting plate 1 on the rail 23 installed at one end of the moving plate 20 of FIG.
By sliding the slide guide 17 to which 2 is fixed, the opening / closing operation is performed in the vertical straight line direction.

A slide guide 21 to which a T-shaped moving plate 20 is fixed is slidable by being driven by an air cylinder 22 attached to the frame 19 of the main body on a rail 24 installed on one side of the frame 19 of the main body. Therefore, the upper heating element 1 and the lower heating element 2 are configured to be movable in the width direction of the strip film 8.

Next, the operation will be described. The strip-shaped film 8 transferred in the direction of the arrow heats the forming portion of the strip-shaped film 8 by the upper heating body 1 and the lower heating body 2, and then forms the prescribed embossed portion by the forming punch 5 and the forming die 6. It is made into a molded product, and the operation is basically the same as the conventional one.

In the heating operation, the forming portion of the strip-shaped film 8 inserted into the film guide 18 is set to the position of the rectangular hole 18a of the film guide 18, and the upper heating body 1 and the lower heating body 2 are moved up and down by driving the cams 15 and 16. It is performed closer to the strip-shaped film 8. The positional relationship at that time is as shown in FIG. 3, and the strip-shaped film 8 which is inserted through the film guide 18 is regulated by the film guide 18 even during the transfer to suppress the shake in the vertical direction, and the upper surface and the top of the strip-shaped film 8 are heated. The gap B1 between the tip surface 1a of the body 1 and the gap B2 between the lower surface of the strip film 8 and the tip surface 2a of the lower heating body 2 is 0.0.
Set to 5 to 0.1 mm and heat for a certain time.

At the time of stoppage in intermittent operation including connection with a taping device and long-term stoppage in continuous operation, the air cylinder 22 is driven to retract the moving plate 20, that is, the entire heating mechanism in the width direction of the strip film 8. Let That is, as shown in FIG. 2, the upper heating element 1 and the lower heating element 2 are moved from the film guide 18 to the strip film 8
To a distance C (for example, 0.8 to 2.0 of the width dimension of the strip-shaped film 8) that does not have a thermal effect on the sheet. When restarting, the entire heating mechanism is returned to the original heating position and continuous operation is performed.

The heating mechanism can be driven by various mechanical or electric actuators, and is not limited to a cam or an air cylinder. Furthermore, the moving direction of the heating mechanism may be arbitrary as long as a prescribed distance can be obtained from the strip-shaped film 8 and the finished molded product.

[0027]

As described above, according to the present invention, the quality of the molding process in the first step when the strip-shaped film heat-molding apparatus is restarted after being stopped for a long time is stable, and the final molding process is performed when the apparatus is stopped for a long time. The deformation and shrinkage of the product due to heat can be prevented, stable heating can always be performed, the molding quality can be improved and stabilized, and the effect of improving the maintenance of the device and the molding man-hour can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an outline of a belt-shaped film thermoforming apparatus according to an embodiment of the present invention.

FIG. 2 is a positional relationship diagram of a heating body and a strip-shaped film taken along the line BB of FIG.

FIG. 3 is a positional state diagram of the heating body and the strip-shaped film at the heating position of the strip-shaped film.

FIG. 4 is a partial front sectional view of a main part of a conventional band-shaped film thermoforming apparatus.

[Explanation of symbols]

 1 Upper Heating Body 2 Lower Heating Body 3 Upper Heater 4 Lower Heater 5 Molding Punch 6 Molding Die 7 Thermocouple 8 Band Film 9 Upper Heat Insulating Plate 10 Lower Heat Insulating Plate 11 Upper Mounting Plate 12 Lower Mounting Plate 13 Cam Follower 14 Cam Follower 15 Cam 16 Cam 17 Slide Guide 18 Film Guide 19 Frame 20 Moving Plate 21 Slide Guide 22 Air Cylinder 23 Rail 24 Rail

Front page continued (72) Inventor Miya ▲ saki ▼ Osamu 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kiyoshi Hino, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A belt-shaped member having a pair of heaters, which are arranged adjacent to a punch to be processed and a belt-shaped film and which is placed adjacent to the die, and a hole having a hole through which a tip portion of the heater is inserted. A band-shaped film thermoforming apparatus including a film guide for regulating and guiding a film, a drive mechanism for heating the pair of heating members close to the band-shaped film from above and below, and a mechanism for separating the pair of heating members from the band-shaped film. . 2. The belt-shaped film thermoforming apparatus according to claim 1, wherein a cam and a cam follower are used as a drive mechanism for driving the heating element in the vertical direction. 3. The strip-shaped film thermoforming apparatus according to claim 1, wherein a moving plate on which a heating body including a driving mechanism is slidably attached to a main body is attached as a mechanism for isolating the heating body. .