TWM570227U - Dry pressing device for molded product production process - Google Patents

Abstract

A dry pressing device in a manufacturing process of a molded product, mainly in the process of manufacturing a molded product, feeding the initial blank into a drying zone in which a microwave drying device is disposed, so that the initial embryo receives continuity The microwave drying operation quickly dehumidifies to a suitable low-humidity, so as to enter an appropriate hot-pressing operation in the hot-pressing type equipment of the subsequent hot-pressing and finishing zone, so that the finished product of the high-quality molded product is completed.

Description

Dry pressing device in the manufacturing process of molded products

The present invention relates to a dry pressing device in a manufacturing process of a molded product, and more particularly to a dry pressing device for feeding an initial blank into a drying zone in a manufacturing process of a molded product to perform a microwave drying operation.

According to the "plastic products" made of plastic materials, it is easy to release toxins that cause serious pollution to the environment, difficult to recycle and reuse, or difficult to recycle and recycle, and the cost of recycling is so large, etc. It has caused serious harm to global environmental protection. In today's era of high environmental awareness, the search for non-toxic, easy-to-recycle materials has become the mainstream of research and practical applications. At present, it has been developed to use a pulp fiber material and/or a plant fiber material as a slurry material, and the slurry is adhered by a suction mold, and then the product is manufactured by hot pressing and setting technology, and is a "plastic product". The distinction is generally referred to as "molded products." Molded products have the advantages of easy recycling, re-manufacture and reuse, and are in line with the trend of environmental protection and energy conservation and carbon reduction. Therefore, they are quickly accepted by the business community and the general public, and molded products are often seen, for example, bowls, plates, Cup lids, packaging materials, shock absorbers, mats, etc. - and other products are gradually adopted, and even various products have tried to manufacture in the form of molded products.

The process of molding a product is generally referred to collectively as a "molding product manufacturing method" or a "molding product manufacturing process." Regarding the outline of the manufacturing process of molded products, as shown in Figure 1, it is necessary to go through the two processes of "slurry molding" and "hot pressing". Among them, "absorbent molding" is simply a suction. The slurry mold is immersed in a slurry tank filled with the slurry, and then the suction slurry is vacuum-applied to the slurry in the slurry tank by a suction device, so that the mold surface of the suction mold is shaped into a "male layer". "When the suction mold adsorbs the billet layer and rises away from the pulp box, the billet layer is gradually dehumidified by continuous suction, and then the suction mold is displaced along with the billet layer to form a cold press mold. The mold layer is pressed to reduce the humidity and simultaneously shape into a "primary product", and then the suction mold absorbs the original embryo and leaves the cold pressing mold to complete the operation of the suction molding. Then, the "hot pressing" operation is carried out by hot pressing the original preform after the suction molding by a hot pressing die, so that the original original product is dried and shaped into a molded product. Finished product. Of course, the finished products of the molded products produced by the hot-pressing work must be subjected to trimming (removing flash), inspection (checking the quality of the products), and packaging (for the production), but these subsequent operations are not necessary. More details.

At present, in the manufacturing process of molded products, the hot pressing type of the initial embryo is carried out by hot pressing, and there are two common working methods. The first one is wet pressing, as shown in Fig. 2. When the initial product is in the state of moisture content of about 55-70%, the hot pressing type is directly subjected to hot pressing, and the hot pressing temperature is 150 ° C ± 10 ° C, and the original medium and high humidity is directly hot pressed. The hot stamping of the initial embryo is the finished product of the dried molded product, and the hot pressing time must be determined according to the volume of the product (the larger the volume of the product, the longer the hot pressing time must be); the second method is the dry pressing method, as shown in the figure As shown in Fig. 3, when the initial product is in the state of moisture content of about 55-70%, it is first sent to a drying zone for drying operation (can be naturally dried or heated to dry), and the moisture content is reduced to 7-10. In the % state, the hot pressing type equipment is further subjected to the hot pressing type operation, and the hot pressing temperature can be 150 ° C ± 10 ° C, because it is hot pressing and shaping work for the low humidity initial embryo product, so the hot pressing time It will be much shorter than the wet pressing method, but it will take time to dry (can be naturally dried or heated to dry).

In the manufacturing process of the conventional molded product, when the dry pressing method is used, the operation time of the hot pressing and finishing equipment can be greatly reduced, and the energy consumption and the equipment failure rate can be reduced, thereby reducing the manufacturing cost. Therefore, dry pressing hot pressing work in the manufacturing process of molded products has become the mainstream.

The creator specializes in the R&D and manufacturing of manufacturing equipment, manufacturing processes and finished product development of various molded products. Through the experience of long-term contact with various equipments of molded products, the drying operation in the above-mentioned conventional dry pressing method is recognized. Naturally dry or hot air drying), there are the following defects in implementation:

1. When drying in natural drying, it is necessary to have a sufficient area for placing a large number of original embryos, and the time for natural drying must be sufficient, but the dried embryos often occur after drying naturally. The appearance and quality of the situation is not good; in general, the dry method of natural drying will have a wide footprint, time and easy quality.

2. In the drying operation of hot air drying, the hot air of the drying zone is blown through the surface of the original embryo by heated hot air to dehumidify the initial embryo, but the hot air can only pass through the surface of the original embryo. Blowing, can not penetrate into the interior, so it will produce the phenomenon of gradual drying, that is, the outer surface will be dried first, and then dried to the inside, so that the dryness of the initial embryo is difficult to control, especially the larger embryo The phenomenon that the product is not easy to be uniformly dried is more obvious; in general, the dry pressing method of hot air drying has low heating efficiency, large relative heat loss, waste of energy, and different degrees of drying, which may affect the lack of product quality.

In response to the above shortcomings, the creator has intensively conceived R&D and improvement, and provided a dry pressing method and device that was not conceived and adopted in the manufacturing process of the molded product to solve the above-mentioned shortcomings. produce.

The reason is that the main purpose of this creation is to provide a dry pressing device in the manufacturing process of a molded product which has a fast drying speed, can greatly shorten the heating time, and can reduce a large amount of equipment space to reduce the cost and increase the productivity.

In order to achieve the above objectives, the present invention appeals to a dry pressing device in the manufacturing process of a molded product, which has a slurry supply system region, provides a fibrous slurry, and supplies an artificial molding machine in a molding production area to produce an embryo by suction. The material layer is extruded to form an initial embryo; a replica jig receives the initial embryo, and the profiling fixture is placed on the conveying system together with the original embryo; the conveying system The jig carries the priming product into a drying zone, so that the priming product is dried in the drying zone to reduce the low humidity; the embryo is sent to the heat through the drying zone The pressing type zone is configured to receive the hot pressing and finishing operation to complete the finished product of the molded product; and the utility model is characterized in that: a microwave drying device is arranged inside the drying zone to generate microwave drying effect, so as to pass The initial embryo product receives the microwave drying operation of the microwave drying device, and rapidly dehumidifies to low humidity.

The above-mentioned dry pressing device in the manufacturing process of the molded product, wherein the microwave drying device disposed inside the drying zone can be a continuous microwave drying device.

In order to achieve the above objectives, the technical means adopted by the author and the practical improvement effect can be achieved. The following preferred embodiments are described in detail with reference to the drawings, and the profit is fully understood.

This creation mainly appeals to a dry pressing device in the manufacturing process of a molded product, and is carried out according to a dry pressing method in the manufacturing process of a molded product, as described in the following.

The "dry pressing method in the manufacturing process of a molded product" described in the present invention is a step in the manufacturing process of a molded product, and thus the dry pressing method is revealed by a complete description of a molding product manufacturing process. As shown in Fig. 4, a molding product manufacturing process is carried out as follows: 1. A fibrous slurry is supplied from a slurry supply system zone 10 (e.g., a pulp tank) to an automatic molding machine in a molding production zone 20. The billet produces a layer of the billet and is extruded to form an initial blank 31; 2. the profiling piece 31 is taken up by a profiling fixture 32, and the profiling fixture 32 is combined with the original preform 31. Placed on a transport system 33, the action of the placement can be done manually or by a robotic arm; 3. The transport system 33 carries the profiling tool 32 to carry the priming product 31 into a drying zone 40, The drying zone 40 is mainly provided with a microwave drying device, and allows the conveying system 33 to pass through, so that the conveying system 40 carries the original jig 32 to the drying zone 40, that is, And entering from the inlet of the microwave drying device, and the conveying system 40 drives the priming product 31 to sequentially perform drying operation inside the microwave drying device, and finally the outlet of the microwave drying device Delivered, thus completing the operation of the drying zone 40, and at this time the primed product 31 has been lowered to low humidity 4. The raw preform 31 passing through the drying zone 40 is then fed into a hot-pressing zone 50, and the hot-pressing zone 50 is mainly provided with a hot pressing type device, so that the initial blank 31 is sent After entering the hot-pressing zone 50, the hot-pressing type device is subjected to the hot-pressing operation to complete the finished product 60 of the molded product; 5. Finally, the mold after passing through the hot-pressing zone 50 The finished product 60 of the plastic product is sent through all the side areas 70 for the removal of the flash material, and then sent to an inspection area 80 for quality inspection, and finally sent to a packaging area 90 for product packaging before the production.

In the steps of the above-mentioned molding product manufacturing process, the step of passing the drying zone 40 is the most important step corresponding to the claim of the present invention, and the step is also a "dry pressing method in the manufacturing process of the molded product". "."

Next, the "dry pressing device in the manufacturing process of the molded product" claimed by the present invention is described. The dry pressing device is mainly provided with a microwave drying device inside the drying zone 40, the drying zone 40 and the conveying system. As shown in FIG. 5, the microwave drying device disposed inside the drying zone 40 may be a continuous microwave drying device, so when the conveying system 33 carries the dummy fixture 32 to the original embryo product When the container 31 is transported into the interior of the drying zone 40 and continues to travel, the microwave drying device disposed inside the drying zone 40 is immediately activated to make a continuous microwave drying operation for the continuous propagation of the original blank 31. The primed product 31 begins to dehumidify until it is transported out of the drying zone 40 to be low humidity. The microwave drying device disposed inside the drying zone 40 can adjust the microwave intensity, and the conveying system 33 can adjust the traveling speed. Therefore, the volume of the initial blank 31 and the surface can be used to calculate the required space microwave. To further adjust the microwave intensity of the microwave drying apparatus and the traveling speed of the conveying system 33, the most important thing is to quickly dehumidify the original blank 31 to a suitable low humidity, but not to dry completely, so as to enter the subsequent hot pressing. In the hot-pressing type of the in-line area 50, an appropriate hot-pressing operation can be performed to complete the finished product 60 of a high-quality molded product.

It can be seen from the above description that the dry pressing device of the microwave drying function adopted by the present invention is superior to the dry pressing device which is naturally dried or hot air dried by the prior art, and the present invention can obviously have better excellent effects. It is as follows:

1. The dry pressing device of this creation adopts microwave drying equipment, which has a fast drying speed, can greatly shorten the heating time, and can save a lot of equipment space to reduce cost and increase productivity.

2. When the dry pressing device of the present invention performs microwave drying on the initial embryo product, the inner and outer parts of the original embryo product can be simultaneously heated, so that the inner and outer parts are uniformly dried, thereby improving the quality and yield of the final product.

3. The dry pressing device of this creation adopts microwave drying equipment, the thermal inertia is very small, no preheating time is needed inside the drying zone 40, temperature adjustment and control are relatively easy, and any change in temperature can be Completed in minutes without interrupting production.

4. The dry pressing device of this creation adopts microwave drying equipment, and its heat is converted by microwave radiation. It does not pass through any intermediate medium, so the thermal efficiency is high, which can be as high as 80% or more. Moreover, the microwave drying equipment itself does not radiate heat. The amount of heat loss is small, and the effect of energy saving and carbon reduction can be achieved.

5. The dry pressing device of this creation adopts microwave drying equipment, and its heat is converted by microwave radiation. Without passing through any intermediate medium, the operating environment is clean and environmentally friendly.

6. The dry pressing device of this creation adopts microwave drying equipment, and microwave radiation is a high-efficiency sterilization and disinfection heat source, which can kill a variety of fungi and molds in a short time, so food can be guaranteed when manufacturing food packaging containers. The hygiene of the packaging container is free of the sterilization process.

In summary, this creation does have absolute novelty and practical advancement. Therefore, it is legally required to apply for a patent, and we are requested to grant the patent as soon as possible after the examination.

10‧‧‧Supply system area

20‧‧‧Molding production area

31‧‧‧ priming products

32‧‧‧Flaw fixture

33‧‧‧Transportation system

40‧‧‧Drying area

50‧‧‧Hot-pressing area

60‧‧‧ finished products of molded products

70‧‧‧cutting area

80‧‧‧ inspection area

90‧‧‧Packing area

Figure 1 shows a schematic block diagram of the manufacturing process of a molded product. Figure 2 is a block diagram of a conventional wet press hot press finishing operation. Figure 3 is a block diagram of a conventional dry pressing hot press finishing operation. Fig. 4 is a block diagram showing the manufacturing process of the molded product dry pressing method. FIG. 5 is a perspective view showing the conveying system of the original embodiment in which the conveying system carries the original preform into the drying zone through the continuous microwave drying device.

Claims (2)

A dry pressing device in a manufacturing process of a molded product, which is provided with a slurry supply system region for providing a slurry of fiber, which is supplied to an automatic molding machine in a molding production area to produce a layer of billet after being sucked, and after being extruded Forming an initial embryo; having a profiling tool to receive the priming product, and placing the profiling fixture together with the priming product on a delivery system; the delivery system carrying the priming jig Feeding into a drying zone, so that the priming product is dried in the drying zone to reduce the low humidity; the embryo of the drying zone is fed into a hot pressing zone to make the initial The embryo product is subjected to a hot pressing operation to complete the finished product of the molded product; characterized in that: a microwave drying device is arranged inside the drying zone to generate a microwave drying function, so that the passed embryonic product receives the microwave baking Microwave drying of dry equipment, rapid dehumidification to low humidity. The dry pressing device in the manufacturing process of the molded product according to claim 2, wherein the microwave drying device disposed inside the drying zone is a continuous microwave drying device.