TW201501908A - Injection die head structure of bottle blowing machine - Google Patents

Abstract

An injection die head structure of a bottle blowing machine comprises: an injection head mounted on the bottle blowing machine, the injection head including a first end and a second end arranged in different directions and connected with each other. The first end is connected to the bottle blow machine, and the shape of the second end gradually tapers to become small from the first end to the second end. The second end is provided with at least one groove. As such, the inner wall of a bottle made by means of blowing can be provided with three-dimensional textures, and plural textures can be seen through under light irradiation, thereby creating diversified styles and exhibiting crystal-clear visual effect of aesthetic feeling. Furthermore, the outer surface of the bottle is smooth for easy pasting of labels, trademarks and product description stickers.

Description

Blowing machine injection molding structure

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a injection die for a blow molding machine, and more particularly to a injection die construction having a groove on the surface to make the inner wall surface of the finished bottle have a grain.

Press, the bottle blowing machine is a kind of equipment for making plastic pellets into hollow containers by blow molding technology. At present, two injection molding and blowing machines, as well as newly developed multi-layer hollow extrusion and stretch blow molding, most of the blowing bottles The machine is still a two-step blow molding machine, which first makes the plastic raw material into a preform and then blows it. Nowadays, PET plastic material is commonly used. After the liquid plastic is sprayed out, the wind is blown out by the machine, and the plastic body is blown to a cavity of a certain shape to make a product. The machine is hydraulic. Blow Molding Machine. The thermoplastic resin is extruded or injection-molded to obtain a tubular plastic type embryo, which is placed in the split die, and the closed mold immediately introduces compressed air into the parison, so that the plastic type embryo is inflated and closely adheres to the split die. On the wall, after cooling and demoulding, various hollow bottles are obtained.

It is conventionally installed on a blow molding machine, such as a metal rod round rod-shaped injection die, which comprises an upper section 1 having an equal diameter at one end, and the diameter of the upper section 1 is gradually reduced downward to make the diameter smaller. In the tapered lower section 2, the injection molding die is installed in a film cavity (not shown), the outer surface of which is a smooth curved surface, and the liquid plastic is introduced into the cavity along the outer periphery of the injection die. A tubular type of embryo can be formed according to the shape of the injection die, and the parison is moved into the split die by heat, the mold is closed and compressed air is introduced into the parison, so that the plastic embryo is inflated and tight. It is attached to the inner wall of the split die, and after cooling, it has the permeable bottle as shown in Fig. 2.

Due to the opaque plastic bottle, most manufacturers will make shapes on the outer surface of the bottle, as shown in Figure 3. When manufacturing, the type of embryo is matched. As shown in Figs. 4A and 4B, the split die 3a is filled with high-pressure air to expand the shape of the parison according to the wall shape of the split die 3a, and the outer peripheral surface 1a of the bottle has a plurality of convex surfaces 4a which are outwardly convex. The inner peripheral surface 2a of the bottle is a circular smooth surface. In use, the outer surface 1a of the bottle can provide the function of grasping and holding the hand, especially when the bottle cap is turned off, the outer periphery of the bottle has a plurality of embossed faces 4a. And a plurality of concave rhombuses 5a, which provide a sliding function of the hand grip, which is convenient for the user to quickly unscrew the cap, and visually, because it is a translucent bottle, the multi-face angle can produce a refraction effect, and The water chest angle 5a which is adjacent to the two embossed surfaces 4a can exhibit a multi-change bright visual effect, especially by seeing the product inside the bottle through the light transmission property, so that the user can understand the internal contents by the appearance. What is the content, the amount of content and the ability to quickly distinguish it as liquid or solid and color...etc., without having to open the bottle cap to see at a glance.

However, the bottle is a kind of container for providing the product. On the marketing, the label or trademark pattern of the bottle is affixed on the surface of the bottle, and even the product name, function, usage, storage method, date of manufacture, product composition, agent and address are indicated. The product description sticker of the above, etc., however, the conventional outer peripheral surface 1a of the bottle has a plurality of embossed surfaces 4a which are non-smooth surfaces, and is not advantageous for sticking the stencil paper on the outer surface 1a of the bottle, and thus does not meet the market demand.

Accordingly, the main object of the present invention is to solve the problem that the outer surface of the conventional blow molding machine injection mold has a smooth curved surface, so that the inner peripheral surface of the bottle is smooth, and the outer peripheral surface of the bottle is shaped to fit together. The shape of the wall of the die is inflated and formed, which is not conducive to the labeling of the label, the trademark pattern and the product description label on the surface of the bottle.

In order to achieve the above object, the present invention discloses a injection molding die construction of a bottle blowing machine, comprising: a injection head mounted on a blow molding machine, the injection head being a rod body, comprising different directions and connected a first end and a second end, the first end is connected to the blow molding machine, and the second end is shaped by being tapered from the first end to the second end to be tapered, the second end There is at least one groove.

Further, the first end is a cylinder of equal diameter, and the second end is a cone.

Further, the surface of the second end is a smooth surface, and the surface of the second end is equidistantly distributed with a plurality of grooves.

Further, the width of the trench is gradually reduced toward the first end direction of the trench adjacent to the width of the second end end face.

Further, the plurality of trenches are arranged in a spiral shape at the second end.

Thereby, the inner peripheral wall of the bottle is formed corresponding to the shape of the injection head, and the circular arc-shaped surface is distributed in a ring shape, and the intersection of the two curved surfaces has a texture, and the outer peripheral surface of the bottle is a smooth surface, which is convenient for the surface of the bottle. Label the advertisement with the standard fiber or trademark, and even indicate the product description sticker with the name, function, usage, storage method, date of manufacture, product composition, agent and address, etc.

In addition, the light can be used to see through the complex lines inside the bottle. It has a variety of shapes and visual effects, which enhances the aesthetics. It can also observe the contents of the interior of the bottle and understand the contents of the internal contents. The amount of it and the quick resolution of it as liquid or solid and color...etc, without having to open the bottle cap.

Conventional knowledge

1‧‧‧上段

2‧‧‧Next paragraph

1a‧‧‧outer surface

2a‧‧‧ inner circumference

3a‧‧‧Open die

4a‧‧‧ embossed surface

5a‧‧‧

this invention

L‧‧‧ center line

10‧‧‧Injection head

11‧‧‧ first end

12‧‧‧ second end

121, 121a‧‧‧ trench

13‧‧‧ screw

14‧‧‧Wind hole

20‧‧‧ bottle

21‧‧‧ inner perimeter wall

22‧‧‧ curved surface

23‧‧‧ lines

24‧‧‧ outer perimeter

30‧‧‧Open die

Figure 1 is a conventional injection die mounted on a blow molding machine.

Figure 2 is a bottle blown with a conventional injection die.

Figure 3 is a bottle made by a conventional injection die with a split die.

Figure 4A is a schematic view of a conventional split die formed from a bottle.

Fig. 4B is a schematic view 2 of a conventional split mold to form a bottle.

Figure 5 is a perspective view of a first embodiment of the present invention.

Fig. 6A is a schematic view 1 of a bottle made by molding a preform with a split die according to the present invention.

FIG. 6B is a schematic view showing the preparation of the preform by the present invention and then forming the bottle with the split die. two.

Fig. 7 is a perspective view of the bottle made of the split mold after the preform is made of the present invention.

Figure 8 is a cross-sectional view of the bottle made with the split die after the preform is made of the present invention.

Figure 9 is a perspective view of a second embodiment of the present invention.

The detailed description of the present invention and the technical description of the present invention are further illustrated by the embodiments, but it should be understood that these embodiments are for illustrative purposes only and are not to be construed as limiting.

Referring to FIG. 5, FIG. 5 is a perspective view of a first embodiment of the present invention. The present invention discloses a injection molding die structure of a bottle blowing machine, comprising: a feeding device mounted on a blowing machine (not shown) In the head 10, the injection head 10 is a metal body rod, comprising: a first end 11 and a second end 12 having different directions and connected, the first end 11 is a cylinder of equal diameter, the first The end of the one end 11 is provided with a screw 13 smaller than the outer diameter of the injection head 10, and the screw 13 is coupled to the blow molding machine. The shape of the second end 12 is from the first end 11 to the second end. The end of the second end 12 is provided with at least one groove 121. The center of the injection head 10 is provided with a wind hole 14 extending through the first end 11 and the second end 12. .

In this embodiment, the surface of the first end 11 and the second end 12 of the injection head 10 is a smooth surface, and the outer circumference of the second end 12 is equidistantly arranged to distribute a plurality of grooves 121, the grooves 121 The width of the second end 12 is gradually reduced toward the first end 11 in the direction of the end of the second end 12, and the groove 121 extends toward the first end 11 of the injection head 10.

According to the first embodiment of the present invention, the injection head 10 is mounted on a bottle blowing machine, and after the liquid plastic is sprayed out, the plastic body is blown to the cavity of a certain shape by the wind blown out by the machine to obtain a tubular plastic type. The embryo is placed in the split die 30, and the closed mold immediately introduces compressed air into the parison, so that the plastic preform is inflated and adheres to the inner wall of the split die 30, and is cooled and released. The hollow bottle 20 is obtained. As shown in FIG. 6A, FIG. 6B and FIG. 7 and FIG. 8, the inner peripheral wall 21 of the bottle 20 corresponds to the shape of the injection head 10, and a plurality of curved faces 22 are annularly distributed, and the two curved faces 22 are transferred. With a convex A grain 23 is formed, and the outer peripheral surface 24 of the bottle 20 is a smooth surface. In this way, the manufacturer can affix the advertisement standard fiber or trademark pattern on the surface of the bottle 20, and even mark the product description sticker with the name, function, usage, storage method, date of manufacture, product composition, agent and address, and the like.

The bottle 20 blown by the present invention is shaped. Since the three-dimensional texture 23 is attached to the inner peripheral wall 21 of the bottle 20, the plurality of lines 23 inside the bottle 20 can be seen through the light irradiation, and the shape and appearance of the crystal ray are varied. The transparent visual effect enhances the aesthetics and allows observation of the contents of the interior of the bottle 20, as well as the contents of the internal contents, the amount of the contents, and the rapid resolution of the liquid or solid and color, etc. without having to open The cap of the bottle 20.

Please refer to FIG. 9. FIG. 9 is a perspective view showing a second embodiment of the present invention. The second end 12 of the injection head 10 of the present invention has a plurality of grooves 121a arranged in an equidistant manner around the outer circumference of the injection head 10, and the plurality of grooves 121a is offset from the center line L of the shot head 10 and is annularly arranged at the second end 12.

In summary, the present invention can take into account the aesthetics of the bottle, and it is important to conveniently label the outer peripheral surface of the bottle, which has industrial appetite and has been investigated for market and network related technical information, and no identical or similar is found. The product has met the requirements of the first innovation of the patent, and filed an invention patent application with the bureau in accordance with the provisions of the Patent Law.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

10‧‧‧Injection head

11‧‧‧ first end

12‧‧‧ second end

121‧‧‧ trench

13‧‧‧ screw

14‧‧‧Wind hole

Claims (5)

A shot die construction of a blow molding machine, comprising: a shot head mounted on a blow molding machine, the shot head being a rod body, comprising a first end and a second connected in different directions and connected The first end is connected to the blow molding machine, and the second end has a shape that is tapered from the first end toward the second end to be tapered, and the second end is provided with at least one groove. The injection molding die construction of the bottle blowing machine according to claim 1, wherein the first end is a cylinder of equal diameter, and the second end is a cone. The injection die structure of the bottle blowing machine of claim 2, wherein the surface of the second end is a smooth surface, and the surface of the second end is equidistantly distributed with a plurality of the grooves. The injection molding die construction of the bottle blowing machine of claim 1, wherein the width of the groove is gradually reduced toward the first end direction of the groove by the width of the end surface adjacent to the second end. The injection die construction of the bottle blowing machine of claim 1, wherein the plurality of grooves are arranged in a spiral shape at the second end.