TWM469170U - Mold and its molding product - Google Patents

Description

Mold and its molded products

The present invention relates to a plastic injection molding die, and more particularly to an injection molding die having a concave decorative pattern on the inner peripheral wall of the molded product. The present invention further relates to a molded product which is injection molded from plastic and has a concave decorative pattern on the inner peripheral wall.

According to today's consumer products, many are shaped by injection molding. The conventional plastic injection molding die is composed of a male mold and a female mold. The male mold and the female mold form a fixed-shaped mold cavity, and after molding, a molded product having the same shape as the mold cavity is formed. Wherein the master mold has a nozzle provided with a main flow channel for cooperating with the nozzle of the injection molding machine, and the molten molding material emitted from the injection molding machine, such as plastic, passes through the nozzle, the nozzle and enters the main channel. Then, it is injected into the cavity, or flows into each cavity through the branch passage of the main flow. After the molding material is cooled and hardened, and then the male and female molds are opened, the molded product can be taken out.

That is, in the case of a tubular molded product, such as a plastic cup, in order to increase the decorative effect, a decorative pattern with characters and/or patterns is generally printed on the outer peripheral wall of the plastic cup, since the decorative pattern is two-dimensional. The state is presented, and it appears monotonous and boring.

Therefore, the relevant manufacturer places the decorative pattern on the inner peripheral wall of the female mold in a concave shape, so that the injection molded product, for example, the outer peripheral wall of the plastic cup can form a convex shape. Decorative pattern.

Of course, some manufacturers have tried to shape the decorative pattern on the inner wall of a polymer hard material such as acrylic (PMMA) plastic cup, which hopes to produce a special stereoscopic effect, but it cannot be performed due to the male mold. Forced demoulding, so that it cannot be implemented. However, if the molding material is made of a soft polymeric material, such as silicone rubber, it is forced to release the mold by the elasticity of the silicone rubber itself, but it cannot be used as a portable container due to the elastic properties of the silicone rubber, such as a traveling cup. .

Therefore, how to form a concave decorative pattern on the inner peripheral wall of a molded product made of a polymer hard material is an urgent problem to be overcome by the related industry.

In view of the above problems, the main object of the present invention is to provide a mold in which a concave decorative pattern is formed on an inner peripheral wall of a molded product made of a polymer hard material, so that the molded product has a special stereoscopic effect.

In order to achieve the foregoing objectives, the technical means adopted in the present invention is to provide a mold comprising a master mold and a male mold, and the outer peripheral wall of the male mold is sleeved with an auxiliary mold made of high temperature resistant polymer soft material. The female mold, the male mold and the auxiliary mold respectively have a predetermined shape; wherein the male mold and the auxiliary mold abutting surface are oppositely provided with a fixing mechanism, so that the auxiliary mold and the male mold are synchronously actuated, and the auxiliary mold outer peripheral wall is provided At least one pattern embossing; after the master mold is clamped with the male mold with the auxiliary mold, a mold hole of a predetermined shape is formed inside the mold, and a molding material of the polymer hard material is injected into the mold cavity, so that A molded product is formed in the cavity, and a concave decorative pattern is formed on the inner peripheral wall of the molded product corresponding to the relief position of each pattern.

Another object of the present invention is to provide a polymer hard material and The inner peripheral wall forms a molded product of a concave decorative pattern, so that the molded product has a special stereoscopic effect.

In order to achieve the foregoing objects, the technical means adopted in the present invention is to provide a molded product made by the above mold, and the inner peripheral wall of the molded product has at least one concave decorative pattern.

1‧‧‧Mold

11‧‧‧Female model

111‧‧‧Dors

112‧‧‧mainstream

12‧‧‧Male model

121‧‧‧fixed slot

13‧‧‧ cavity

2‧‧‧Auxiliary mode

21‧‧‧Fixed

22‧‧‧ pattern embossing

3‧‧‧Molded products

31‧‧‧Decorative pattern

In order to further reveal the specific technical content of the present case, first refer to the drawings, wherein: Figure 1 is a cross-sectional view of the mold after clamping; Figure 2 is a bottom view of the auxiliary mold of the present invention; Figure 3 is a cross-sectional view of Figure 2 along line AA FIG. 4 is a cross-sectional view of the mold after the mold is opened; FIG. 5 is a cross-sectional view of the mold after the mold is opened and the molded product is taken out; and FIG. 6 is a perspective view of the molded product of the present invention.

As shown in FIGS. 1 to 5, basically, the mold 1 of the present invention includes a master mold 11, a male mold 12, and an auxiliary mold 2.

The mother and male molds 11, 12 are of a conventional structure and are not made of metal. The technical feature of the present invention is that the outer peripheral wall of the male mold 12 is sleeved with an auxiliary mold 2 which is made of a high temperature resistant polymer soft material such as silicone, and the auxiliary mold 2 and the male mold 12 are The abutting surface is oppositely provided with a fixing mechanism, for example, at least one annular fixing 榫 After the at least one annular fixing groove 121 is sleeved with each other, the fixing jaws 21 are snapped into the corresponding fixing grooves 121, so that the auxiliary die 2 and the male die 12 can be opened and closed simultaneously.

Referring to FIG. 1 , the fixing jaws 21 are disposed on the inner peripheral wall of the auxiliary mold 2 , and the fixing grooves 121 are disposed on the outer peripheral wall of the male mold 12 , but not limited thereto. The fixed rafts are provided on the outer peripheral wall of the male mold 12, and the fixed grooves 121 are provided on the inner peripheral wall of the auxiliary mold 2.

Further, the outer peripheral wall of the auxiliary mold 2 is provided with at least one pattern embossing 22 composed of characters and/or patterns, so that the inner peripheral wall of the molded product 3 is formed into a concave decorative pattern 31.

The master mold 11, the male mold 12 and the auxiliary mold 2 respectively have a predetermined shape. After the mold clamping, the mold mold 13 with the auxiliary mold 2 and the female mold 11 form a predetermined shape of the mold hole 13, as shown in the figure. It is shown that the cavity 13 is a conical tubular shape, but not limited thereto, the cavity 13 can be a geometrically shaped tubular body when implemented. Further, the master mold 11 has a conventional nozzle 111, and the nozzle 111 communicates with the cavity 13 of the mold 1 with a main flow path 112.

When the master mold 11 is clamped with the male mold 12 with the auxiliary mold 2, a conventional injection molding machine (not shown) will be a transparent or translucent polymer hard material such as acrylic (poly). Methyl methacrylate, PMMA), polystyrene (PS), ABS resin (Acrylonitrile Butadiene Styrene Copolymer) or AS resin (styrene-acrylonitrile copolymer, Styrene Acrylonitrile) After the molding material is heated to a molten state, the molding material passes through the nozzle of the injection molding machine, the nozzle 111 of the master mold 11, and enters the main flow path 112. Then, it is injected into the cavity 13, and after the molding material is cooled and hardened, a molded product 3 having the same shape as the cavity 13 is formed in the cavity 13 of the mold 1, and the inner peripheral wall of the molded product 3 is The pattern 22 of each pattern of the auxiliary mold 2 should be formed to form a concave decorative pattern 31.

Next, the mother and male molds 11, 12 are opened (as shown in FIG. 4), and the auxiliary mold 2 and the molded product 3 are moved out of the mold 11 to an appropriate distance in synchronization with the male mold 12. Finally, as shown in FIG. 5, the molded product 3 is ejected by automatic demolding, for example, a ejector pin (not shown) preset by the male mold 12, or the molded product 3 is taken out by human power, and by The elasticity of the auxiliary mold 2 causes the molded product 3 and the auxiliary mold 2 to be forcedly released, so that the molded product 3 is detached from the auxiliary mold 2, that is, the desired molded product 3 is obtained, and the at least one product is obtained. A concave decorative decorative pattern 31 is formed on the inner peripheral wall of the molded product 3.

As shown in FIG. 6, it is a perspective view of the molded product 3, such as a cup, wherein the inner peripheral wall of the cup is oppositely provided with a pair of concave decorative patterns 31 (shown by broken lines), if the cup 3 is transparent or The translucent polymer hard material is injection molded. When the cup 3 contains the liquid, the user can transmit the decorative pattern 31 to exhibit a special stereoscopic effect through the refraction and reflection of the light, thereby increasing the cup. The added value of 3.

Therefore, through the implementation of the present invention, the gain of the effect is that the concave decorative pattern is formed on the inner peripheral wall of the tubular molded product by splicing the elastic auxiliary mold in the male mold of the mold. Thereby increasing the visual effect and added value of the molded product, it is a great structure that has never been seen before.

The disclosure of the present invention is one of the preferred embodiments, and any partial modification or repair The person who is apt to the technical idea of the case and who is easy to infer by those who are familiar with the skill, does not deviate from the patent right of the case.

1‧‧‧Mold

11‧‧‧Female model

111‧‧‧Dors

112‧‧‧mainstream

12‧‧‧Male model

121‧‧‧fixed slot

13‧‧‧ cavity

2‧‧‧Auxiliary mode

21‧‧‧Fixed

22‧‧‧ pattern embossing

3‧‧‧Molded products

31‧‧‧Decorative pattern

Claims (10)

A mold comprising a master mold and a male mold, the outer peripheral wall of the male mold being sleeved with an auxiliary mold made of a high temperature resistant polymer soft material, the master mold, the male mold and the auxiliary mold respectively having a predetermined shape Wherein the male mold and the auxiliary mold abutting surface are oppositely provided with a fixing mechanism, the auxiliary mold is synchronously actuated with the male mold, and the outer peripheral wall of the auxiliary mold is provided with at least one pattern ridge; the female mold and the belt After the male mold of the auxiliary mold is clamped, a mold hole of a predetermined shape is formed inside the mold, and a molding material of a polymer hard material is injected into the mold cavity to form a molded product in the mold cavity, and the inner peripheral wall of the molded product is formed. Corresponding to the relief position of each pattern, a concave decorative pattern is formed. The mold of claim 1, wherein the pattern embossing is composed of characters and/or patterns. The mold of claim 1, wherein the fixing mechanism comprises at least one annular fixing cymbal and at least one annular fixing groove, and after the two are sleeved with each other, each fixing yoke is buckled in the corresponding fixing groove. The mold of claim 3, wherein the fixing jaw is disposed on an inner peripheral wall of the auxiliary mold, and the fixing groove is disposed on a peripheral wall of the male mold. The mold of claim 3, wherein the fixing jaw is disposed on an outer peripheral wall of the male mold, and the fixing groove is disposed on an inner peripheral wall of the auxiliary mold. The mold of claim 1, wherein the cavity is a geometrically shaped tubular body. The mold according to claim 1, wherein the polymer soft material is silicone rubber, and the polymer hard material is transparent or translucent, and is selected from the group consisting of acrylic (PMMA). , polystyrene (PS), ABS resin or AS resin. A molded product produced by the mold according to the first aspect of the invention, wherein the inner peripheral wall has at least one concave decorative pattern. The molded product of claim 8, wherein the decorative pattern is composed of characters and/or patterns. The molded product according to claim 8, wherein the molded product is a geometrically shaped tubular body, and the molded product is injection molded from a transparent or translucent polymeric hard material.