JPS6024919B2 - Disc-shaped object drying method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for drying discs made from thermoplastic resins, in particular container lids or other products.

The method and apparatus of the present invention can quickly and efficiently dry a disc-shaped product such as a lid or a lid immediately after production, firstly increasing the drying speed, and as a result, reducing the time required for producing the product or reducing the production time. The idea is to improve sexuality. Disc-shaped objects such as thermoplastic resin container lids and stopper products often have labels printed on their surfaces, but if this printed surface is not dried promptly, people or objects may fall onto the printed surface. It has the disadvantage that the printed surface will be stained if touched.

Especially when manufacturing lid or closure products continuously,
The above problem of contamination must be avoided at all costs. Therefore, it is required that the printed surface of the printed lid or closure product be dried quickly.

In the drying methods and devices of the above type known to date, intensive attempts have been made to achieve a more rapid drying of lids or closure products of the above type beyond that by contact with the atmosphere. Therefore, when manufacturing lids, etc. using thermoplastic resins such as polypropylene, printing is performed on disc-shaped products such as lids or stoppers manufactured by molding methods, and then the printed product is simply placed in the atmosphere. The drying of these products is only allowed to proceed slowly due to the action of air.

Furthermore, it is necessary to subject the products to slow movements in order to avoid agglomeration between the products, which can occur when the products are under the influence of their own heat or heating. The present invention was obtained in order to eliminate the drawbacks of the above-mentioned conventional technology, and includes:
The present invention provides a method and apparatus for quickly and uniformly drying a printed disc-shaped product such as a lid or stopper (hereinafter simply referred to as the product).

The present invention is characterized in that, in order to uniformly dry the entire product, the product is moved while being rotated, and is heated during the movement process.

That is, the apparatus according to the present invention includes a belt conveyor made of a mat or floor material made of cloth or rubber, a support member provided on the side of the belt conveyor, and an edge of the product brought into contact with the support member. The product is characterized in that other traverse portions in the diametrical direction are brought into contact with the belt conveyor, so that the product is brought into contact with only the edges and is dried while being transferred in an inclined and floating state on the belt conveyor. It is.

The support members on each side of the belt conveyor have a substantially overturned T-shape, thereby defining and limiting the position of the lower part of the product, while the other support member is placed at a suitable height on the belt conveyor. establish. In the end, the edge of the product is supported in a lifted state by a support member installed at a high position, and the other (lower) green part is moved by a belt conveyor while its lateral movement is regulated and restricted by another support member. The products float on a belt conveyor in an inclined state and are transferred while being forced to rotate. Furthermore, the product is configured to be heated by infrared rays or a hot air heater during transportation, and cooled by a cooling device if necessary. The drying apparatus of the present invention is characterized in that each of the above-mentioned constituent elements, members, etc. are provided as described above.

The invention, having the construction and features outlined above, will be better understood in its details from the description that follows, made with reference to the accompanying drawings, which are given by way of illustration only and not in a sense limiting the scope thereof. There will be.

It should be recognized that various changes and modifications may be made based on what is illustrated in the accompanying drawings and described in this specification without exceeding the scope of the invention according to the claims set forth at the beginning. It is. First, it should be noted that throughout FIGS. 1 to 5, the same reference numerals indicate the same components or the same requirements.

Reference numeral 2 denotes a belt conveyor, which is made of a mat made of cloth, rubber, or other material, and is non-breathable in this embodiment, but may be breathable.

This belt conveyor 2 is driven by a drive roll (not shown) as shown by the arrow. Support members 3 and 4 are provided on both sides of the belt conveyor 2, respectively.
These supporting sections 3, 4 have vertical sections 3', 4' and horizontal sections 3'',
4". This support member is made of metal or thermoplastic resin molded product, but it is preferable to use one that does not affect the product as much as possible due to heat. This belt conveyor is used for the required drying time. It has a length that allows the product to be transferred, but it may be divided into a plurality of parts if necessary.As shown in FIG.
' is located on the side of the belt conveyor 2, and the horizontal part 4'' is located above the side of the belt conveyor 2 so as to overlap at a distance h.

The other support member 3 has a vertical portion 3' arranged above the side of the belt conveyor 2 with a distance therebetween.

Therefore, in the product 1, part la of the periphery is the supporting member 4.
rests on the horizontal part 4'' of the other diametrical part lb
rests on the belt conveyor 2 and is prevented from lateral movement by the vertical portion 3' of the support member 3. In the end, the product 1 is tilted at an inclination angle Y, a part of the periphery is supported by the horizontal part 4'', and a part of the diametrical periphery rides on the belt conveyor 2 and is transferred in the direction of the arrow, as shown in Fig. 2. Rotation is given as shown by the arrow.
As shown in FIG. 1, a heating device 5 is provided on a part of the route of the belt conveyor 2, and this heating device 5 is provided with a resistor 5' as shown in FIG. 4. This resistor 5' may be made of porcelain or nichrome wire and provides sufficient heat for drying the product 1. Further, as an ascending type heating device, a tunnel-like wall may be formed above the belt conveyor 2 and hot air may be passed through the wall, or a combination of hot air and infrared heating may be used.
In this case, if a breathable compare belt is used and the hot air is blown out from above and sucked in from below, the entire product can be heated uniformly in a short time. Reference numeral 6 in FIGS. 1 and 5 is a cooling device, which cools the dried product by blowing air through small holes 6'' provided in the duct 6'.

By providing this cooling device, the length of the belt conveyor can be made shorter than in the case of natural cooling, and the time required for the drying process can also be shortened. In the present invention, a part lb of the circumference of the product 1 is supported on the belt conveyor 2, and the other part la of the circumference in the diametrical direction is supported by the support member 4 and floated above the belt conveyor 2. At the same time, along with the movement of the belt conveyor 2, the product 1 is constantly given rotational motion.

Without this rotational movement, the entire bottom surface of the product 1 would be in close contact with the belt conveyor 2, which would often cause wavy deformation, but according to the present invention, this drawback can be completely prevented. . Furthermore, since the product is heated or cooled on its entire surface, drying is uniform and the processing time is significantly reduced. Therefore, if the present invention is applied, the product after the printing process can be
It is possible to immediately stack, transport and send to the discharge section for use without requiring any "waiting" means.

Although not described in the embodiment, if the supporting member 3 is supported so as to be movable in the width direction of the belt conveyor 2, even if the diameter of the product 1 is different, the supporting member 3 can be moved according to the diameter. can be supported.

Further, in FIG. 3, support members of different sizes are provided, but they may be of similar size, and furthermore, the vertical portion 4' may be positioned above the belt conveyor 2. good. By using the drying method and apparatus according to the present invention as described above, the manufacturing speed of disc-like products such as container lids or stopper products can be significantly increased, and at the same time products completely free of defects can be produced. This can be achieved without any inconvenience in manufacturing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view for explaining the manner in which a disc-shaped object is dried according to the present invention, FIG. 2 is a plan view showing a belt conveyor and a product, and FIG. 3 is a belt conveyor and a disc FIG. 4 is a schematic cross-sectional view of a heating device, and FIG. 5 is a schematic cross-sectional view of a cooling device. 1...Disc-shaped object such as a lid or stopper, 2...
・Belt conveyor, 3, 4...Support member, 3'
, 4'... Vertical section, 3'', 4''... Horizontal section, 5... Heating device, 6... Cooling device. Figure 2 Figure 3 Figure 1 Figure 5

Claims (1)

[Claims] 1. A side edge of a disc-shaped object is supported along one side of the belt conveyor at a position higher than the surface of the belt conveyor, and the lateral edge of the disc-shaped object is supported in the diametrical direction. A disc characterized in that the other side edge is supported on a belt conveyor, and as a result, the disc-shaped object is supported and transferred on the belt conveyor in an inclined state while being rotated, and heating is applied during the process. method of drying objects. 2. A belt conveyor for moving a disc-shaped object, and a conveyor belt provided on both side edges thereof, which has an overturned T-shaped cross-sectional shape, and provided on one side of the belt conveyor so as to protrude upwardly and inwardly, It has a horizontal part that holds one diametrical end of the disc at an appropriate height above the belt conveyor surface, and a vertical part that supports the other end of the disc above the belt conveyor surface. a heating device provided above the surface of the belt conveyor at an appropriate position in the longitudinal direction of the belt conveyor; It also has a cooling device located above the surface of the belt conveyor at an appropriate position to hold the disc-shaped object in an inclined position and move it while subjecting it to constant rotational movement, and during its movement, it A drying device for a disc-shaped object, characterized in that it is configured to dry.