JPH0410017Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to the improvement of a seal packaging device for card-like objects such as ID cards.

(Prior Art) Conventionally, there has been a seal packaging device of this type as shown in FIG. 1 and 1 are a pair of compacted silicone rubber rolls at the front of the feeding side, 2 and 2 are a pair of compacted silicone rubber rolls at the rear arranged with a gap between them, and 3 is a heater arranged between both silicone rubber rolls 1 and 2. , 4 is one silicone rubber roll 1,
2 through a transmission means 5.

In the conventional seal packaging device, when the card or photo 7 inserted into the film 6 passes through the rolling silicone rubber rolls 1, 1 in front, the thermoplastic resin laminated on the back side of the film 6 is heated by the heater 3. After being melted, the card 7 is taken up and passed between the rolling silicone rubber rolls 2, 2 at the rear, and the film 6 is welded, and the card 7 is sealed and packaged between the films 6.

(Problems to be Solved by the Invention) However, in such a conventional seal packaging device, the rolling pressure rollers are installed before and after the heater 3, which not only increases the distance between the roller devices, but also impedes miniaturization. , 1, heated in a non-pressure state, and then pressed by rolls 2, 2, so air bubbles tend to remain on the surface of the card or photo 7, which can seriously damage the face photo in particular. Also, the heater 3
Temperature control is performed by a thermostat, and when the film 6 is heated when the heater temperature is in a high temperature range, the thermoplastic resin on the back side of the film protrudes from the film 6 while passing between the rolling silicone rubber rolls 2, 2. There were problems such as the cards attached to the rolls 2, 2 and sealed and wrapped around the rollers, causing damage to the cards.

Therefore, the installation of the heaters 3, 3 in Fig. 2 above was discontinued, and the compacting rolls 1, 1 were made to have an iron core structure with a built-in heater (not shown), and a system was adopted in which the compacting rollers 1, 1 were directly heated. There are some things.

Although this device can eliminate the problem of miniaturization mentioned above,
Because it relies on a direct heating method, it takes time for the heat of the iron core to reach the surface, and the temperature must be quite high to reach the temperature necessary for heating the film, and the heat lost during work There are inconveniences such as the need to control the rotational speed of the roll depending on the time it takes for replenishment and transmission from the inner surface to the surface, and there are other problems such as a high possibility of occurrence of defective seal packaging cards due to heating. I can't escape it.

(Means for solving the problem) This idea was completed as a result of repeated studies to solve the problem. Namely, a conveyance unit for stacking and sending out cards and transparent films is placed before and after this conveyance line. It consists of two pairs of upper and lower rolling pressure rollers, and an energizing means that energizes the upper and lower sets of rolling rollers to generate self-heating, and conductive carbon black is mixed on the outer periphery of the energized rolling rollers. This device is characterized in that it has a conductive silicone rubber layer, and roller-shaped electrodes are provided oppositely on the outer periphery of the layer so as to be energized.

(Function) In the seal packaging device of this invention, conductive carbon black particles mixed in silicone rubber self-heat when energized as described in detail later, but when it reaches a predetermined temperature, its own electrical resistance increases and no more Utilizing the property that the temperature does not rise, this prevents heating of the silicone rubber and prevents the above-mentioned wrapping of the seal packaging card.Also, by not installing a heater, the installation space is reduced and miniaturization is possible, and the film is fed. Since it is heat-pressed and bonded at the same time as it is inserted, there are no air bubbles on the surface of the card or photo 7.
Furthermore, since the rubber is heated instantaneously, the rotational speed of the rolls is also increased, improving work efficiency.Furthermore, due to the mutual rolling contact of the roller-shaped electrodes, smooth power supply is achieved, reducing the number of failures.

(Example) Hereinafter, an example of this invention will be described based on the drawings. FIG. 1 is a side view showing the outline of the card seal packaging device according to this invention.
0 is a pair of rolling pressure rollers at the front, 11 and 11 are a pair of rolling rolling rollers at the rear, and a predetermined amount of conductive carbon black particles are mixed on the outer periphery of each of the upper and lower rolling rollers 10 at the front. Conductive silicone rubber layers 12, 12 are provided. In the figure, 10a is an iron core, and 10b is an insulating layer made of silicone rubber. In this embodiment, the conductive silicone rubber layer 12 is such that the terminal voltage of the power supply 15 is applied through roller-shaped electrodes 16, 16, which are respectively transferred to the rolling compaction rollers 10, 10 of the front set. However, once a predetermined temperature is reached, the inherent electrical resistance increases and the temperature does not rise any further. By utilizing this property, the heating setting temperature can be arbitrarily changed by changing the mixing ratio of carbon black particles, and in this example, the composition is approximately 30% carbon black and approximately 70% silicone rubber. Very favorable results were obtained depending on the composition.

Note that 13 is a motor that rotationally drives both rolling pressure rollers via a transmission means 14.

In the seal packaging device of this invention configured as described above, when the card 19 inserted between the films 18 is inserted into the front roller via the conveying section 20 while the conductive silicone rubber layer 12 is heated, The thermoplastic resin laminated on the back side of the film 18 is heated and melted, the upper and lower two films are welded, and the card 19 is sealed and comes out from the rear roller. In this case, the silicone rubber layer 12 uses conductive carbon black particles as a heating means, which has a property that increases its own electrical resistance when it reaches a predetermined temperature and prevents the temperature from rising any further. The layer 12 will not overheat above the set temperature. Moreover, the thermoplastic resin does not protrude from the film due to the above-mentioned overheating.

(Effects of the invention) As explained above, according to this invention, there is a conveyance unit that sends out cards and transparent films in a stacked manner, two pairs of rolling rollers arranged above and below that are placed before and after this conveyance line, and an energizing means for energizing the set of rolling compaction rollers to generate self-heating; the outer periphery of the energized rolling compaction rollers is provided with a conductive silicone rubber layer mixed with conductive carbon black; The card-shaped object sealing and packaging device is characterized by having roller-shaped electrodes arranged opposite each other and energized, so that pressure sealing can be performed at the same time as heating, and the lamination finish is improved without generating air bubbles on the card or photo. In addition, overheating of the silicone rubber layer is prevented, the above-mentioned wrapping of the seal packaging card is prevented, and the installation space is reduced by not installing a heater, making it possible to downsize, and the mutual rotation by the above-mentioned roller-shaped electrode is Because of the dynamic contact, smooth power supply is achieved, fewer failures occur, and an extremely reliable seal packaging device can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a seal packaging device showing an embodiment of this invention, and FIG. 2 is a schematic diagram of a conventional seal packaging device. 10, 11... Compact roller, 12... Silicon rubber layer, 13... Motor, 18... Film, 1
9...card or photo, 20...supply section.

Claims (1)

[Scope of utility model registration request] A conveyance unit that stacks cards and transparent films and sends them out; two sets of rolling rollers arranged in front and behind this conveyance line in pairs above and below; and an energizing means that energizes the pair of rolling rollers to generate self-heating. A conductive silicone rubber layer mixed with conductive carbon black is provided on the outer periphery of the energized rolling pressure roller, and a roller-shaped electrode is provided opposite to the outer periphery of the layer so as to be energized. Card-shaped object seal packaging device.