JPS6020563Y2 - PTP packaging equipment - Google Patents

Description

[Detailed description of the invention] This invention is a press-through, pack packaging device, abbreviated as P.
This invention relates to improvements to packaging equipment for TP.

The conventionally known packaging device for PTP, as shown in the schematic structure in FIG. The film F is heated with a preheating plate H, and then a pocket molding plate M of a vacuum type, a pressure type, a mold type, etc. is used to regularly form small concave portions called one pocket. Part A, the brake roll Br which has a cavity 1 corresponding to the pocket L of the film on its circumferential surface following the pocketed film F', and the seal receiver are tensioned by the dancer roll Dr between the roll Sr□. While transporting the packaged object in the film F' pocket L, the packaged material chute S is
After filling the packaged objects P such as tablets and capsules from the supply tube Sr, the seal receiver superimposes aluminum foil N on the plane of the pocket opening side of the film F' by the seal roll Sr2 facing the roll Sr1, and heats it. It is composed of a packing object filling and sealing section B which applies pressure to bring the two into close contact with each other.

However, in the above-mentioned device, especially the brake roll Br and the seal receiver are the roll Sr□ and the seal roll Sr2.
The film F' transferred between the seal roll Sr
2 and the tensile action of the dancer roll Dr, the pocket L filled with the object to be packaged P and the cavity 1' of the seal receiving roll Sr1 do not completely coincide with each other. This often causes deformation of the periphery of the opening of the pocket L, and even deformation or damage of the packaged object P stored therein.

The purpose of the present invention is to provide a PTP packaging device that eliminates the above-mentioned disadvantages of conventional devices.
The gist of this is that the pitch of the cavities 1' provided on the circumferential surface of the roll Sr1 is set higher than that of the cavity 1 of the brake roll Br, and the pocketed film F' is extended between the roll and the brake roll. The point is that it is made larger by the minimum amount of elongation.

With the above-mentioned improvement, the film F' is stretched between the brake roll Br and the seal receiver roll Sr1, and the pocket L of the film is precisely aligned with the cavity 1' of the seal receiver roll Sr□, and the opening thereof is It is possible to prevent deformation of the peripheral edge of the part and deformation and damage of the internal filling.

Moreover, the amount of stretching of the film F' is
Although it is not necessarily constant due to fluctuations in the amount of heating in step 2, the tensile force of the dancer roll Dr, the thickness of the film itself, etc., if the amount of elongation is less than the expected value, the pocket L of the film F' will be in the cavity of the brake roll Br. As a result of the film F' coming into contact with the wall surface in the advancing direction of the film F', the seal receiver is forcibly pulled by the roll Sr□ and elongated to the planned length, thereby minimizing fluctuations in the amount of elongation. can.

Hereinafter, typical embodiments of the present invention will be described.

In FIG. 1, 1 is a reel for winding and storing a long synthetic resin film 2 such as polypropylene or polyvinyl chloride.

3 is a feed roll, 4 is a tension roll, and 5 is a guide roll. Through these rolls, the synthetic resin film 2 wound and stored on the reel 1 is sent out to the subsequent pocket forming part.

The pocket molding section consists of a pair of upper and lower preheating plates 6゜6' and a pocket forming plate 7. The film 2 fed out from the reel 1 is heated and softened by the preheating plate 6゜6', and then the pocket forming plate 7 is heated and softened. A plurality of pockets 2a are regularly arranged and formed at a predetermined pitch by pressing between the upper mold 7a and the lower mold 7b.

In this example, the pocket molding plate 7 is of the mold pressure type as shown in the figure, but it may be of other types, such as a vacuum type or pressure type.

However, in order to make it possible to use an extremely thin film and to form pockets of uniform wall thickness, it is preferable to use a molded plate of the mold pressure type as shown in the figure.

The details of the compression bottom type pocket molding machine are disclosed in the invention of Japanese Patent Application No. 52-154858 by the present applicant.

The synthetic resin film 2' in which the pockets 2a have been formed is sent to the packaged object filling and sealing section of this apparatus via a feed roll 8, a first attachment roll 9, and a first dancer roll 10.

A brake roll 11 serves as a packaging object filling and sealing section, a roll 16 serves as a seal receiver, and a seal roll 17 faces the roll.
The synthetic resin film 2', which is composed of a packaged object supply cylinder 13 and the same chute 15 and has a pocket 2a formed therein, is moved between the brake roll 11 and the seal receiver roll 16 by a first dancer that can move up and down. The material to be packaged 14 was transferred into the pocket 2a by the rotation of the supply cylinder 13 which received the material to be packaged 14 from the chute 15 during this transfer. After that, the seal receiver is heated by the seal roll 17 on the roll 16 while pressing the aluminum foil 1; The opening of the pocket 2a is sealed to form a continuous wrapping band 2''.

At this time, as described at the beginning regarding the conventional device, the film 2' is slightly elongated due to the heating by the seal roll 17 and the tensile action of the first dancer roll 10, so that the film 2' is formed on the circumferential surface of the brake roll 11. If the pitch of the cavities 12a and the seal receiver are the same as the pitch of the cavities 12b formed on the circumferential surface of the roll 16, the pockets 2a of the film 2' can be accurately fitted into the latter cavities 12b. However, in this example device, the pitch of the latter cavity 12b is made larger than that of the former cavity 12a by the minimum elongation amount by which the film 2' is elongated, so that the pocket 2a of the film 2 and the cavity 12b of the roll 16 are You can get an effect that perfectly matches that.

Moreover, if the amount of elongation of the film 2' is smaller than expected, the pocket 2a will be removed from the wall surface 12' in the advancing direction of the cavity 12a of the brake roll 11, as shown in FIG.
As a result of contacting with the seal receiving roll 1, the film 2'
6, the film 2' is forcibly stretched to a predetermined length, thereby achieving the effect of minimizing fluctuations in the amount of stretching of the film 2'.

The continuous package 2'' formed in the above-mentioned packaged object filling and sealing section then passes through the second dancer roll 21, second attachment roll 22, guide roll 23 and timing roll 24, and is then packaged by a punch 25, 25'. The package is trimmed into a rectangular individual packaging board that encloses the desired number of filled pockets 2a, and taken out as a product.

After the product is punched out, the scraps are collected by guide rollers 26.
After that, it is wound onto a scrap reel 27.

Each of the above operations is performed by intermittent drive rotation of each roll 8, 11, 16, 24, and 27 based on the operation of the timing roll 24 by a known mechanism.

Although one embodiment of the present invention has been described above, this is merely an example and does not limit the technical scope of the present invention.

The important point is that the cavity pitch of the seal receiver roll is larger than the cavity pitch of the brake roll by the minimum amount by which the synthetic resin film is stretched between both rolls, so that the pockets of the film, especially the seal receiver, are larger than the cavity pitch of the brake roll. In addition to ensuring perfect alignment with the roll cavity,
The purpose is to minimize fluctuations in the amount of film elongation.

[Brief explanation of the drawings] Fig. 1 is a model diagram showing one embodiment of the present invention, and Fig. 2 is a model diagram showing an embodiment of the present invention.
The brake roll and seal receiver in the embodiment shown in the figure are partially enlarged sectional views of the rolls, and FIG. 3 is a schematic diagram of the main parts of the conventional apparatus. 1: Film reel, 2, 2' two-piece resin film, 2
``Two continuous wrapping bands, 2a: pocket, 3: feeding roll,
4: Tension roll, 5 Ni guide roll, 6. 6/
: Preheating plate, 7: Pocket molding machine, 7a: Upper mold, 7
b Two lower molds, 8: Feed roll, 9: First attachment roll, 10: First dancer roll, 11 Ni brake roll, 12ai2b: Cavity, 13: Supply tube, 14: Wrapped object, 5: Chute, 16 : Seal receiver is a roll, 17
: Seal roll, 18 Ni aluminum foil reel, 19 Ni aluminum foil, 20 Ni guide roll, 21: Second dancer roll, 2
2: 2nd attachment roll, 23rd guide roll,
24: Timing roll, 25.25': Punch, 26: Guide roll, 27: Scrap reel.

Claims (1)

[Scope of utility model registration request] A long synthetic resin film having a plurality of regularly arranged pockets is transferred under tension between a guide roll and a seal receiving roll, and each pocket is filled with the object to be packaged.
The seal receiver is used in an apparatus for manufacturing a continuous packaging band by overlapping aluminum foil on the pocket opening surface of the film using a roll and a seal roll facing the roll, and applying heat and pressure to bring the two into close contact. is characterized in that the pitch of the cavities of the roll is larger than the pitch of the cavities of the brake roll by the minimum elongation amount by which the synthetic resin film and the seal receiver are elongated between the roll and the brake roll. Packaging equipment for yen-P.