TW553819B - Press forming method for rubber - Google Patents

Abstract

Disclosed is a press forming method for rubber, which a mold set is designed to have an upper, an intermediate, and a lower mold. The intermediate mold is provided with a lower cavity and an upper cavity corresponding with the upper and bottom molds, respectively. Appropriate amount of molten rubber is poured into the upper cavity through a material feeding tube, and appropriate amount of rubber is manually placed into the lower cavity, to form a large sole and a colored block in the upper and lower cavities, respectively. The intermediate mold is then removed to make the top and bottom molds close, enabling the large sole and the colored block to engage and combine with each other integrally, so as to form a rubber product having two or multiple colors with better combining strength.

Description

553819 _Case No. 90118826_year month__ V. Description of the invention (1) [Technical Field] The present invention relates to a method of rubber compaction, especially a rubber compaction that can form two-color or multi-color rubber products. method. [Previous technology] Please refer to Fig. 8, which is a conventional method of hot-pressing rubber, which puts the rubber material into the hot-melt chamber of a washing machine, and heats the rubber to the molten state and injects it into the mold. In the cavity, it is then hot-pressed, so different materials can be placed at different locations in the cavity. Not only is it accurate and time-saving, it can also obtain a uniform product. If you replace the mold with a different size or shape, Operators also only need to adjust the settings to obtain consistent products, which greatly improves production efficiency. However, the above method is only applicable to the production of single-color rubber products, and cannot be used to produce two-color or multi-color rubber products. Taking soles as an example, the design of today's soles is mostly designed into two-color or multi-color soles. That is, there will be several color blocks of the same color or different colors in the sole. The above method cannot. Forming two-color or multi-color rubber products. Please refer to the invention patent case No. 8 7 1 0 4 7 Ο 1 "Method for making shoe molds with two-color soles", which discloses a shoe with a partition plate between the upper shoe mold and the lower shoe mold. Mold manufacturing method, and the case also discloses the # process that can be used to make two-color soles by upper and lower shoe molds and split mold partitions, which are mainly placed on the upper and lower shoe molds respectively. Layer of semi-molten plastic, and separate the upper and lower shoe molds at the same time by using split mold partitions, after plastic molding of different colors, open the upper and lower shoe molds directly-take out the middle split mold partition, and finally The upper and lower shoe molds are re-pressed together, so that the two different color plastics inside the upper and lower shoe molds are combined into one to make a double

553819 Case No. 90118826 Revision V. Description of invention (2) Colored soles. However, this overcomes and improves: 1. The split mold can produce the pressure of the shoe. 2. The upper and lower shoes are flat in the process of combining the surface temperature separation template to produce a 10 ° C flat patch, which is easy to produce the aforementioned. Each, today's soles have the same color or different colors to create rich and multi-methods. [Objective and Effect The rubber compression mold of the present invention has a pair of middle molds, which can be separated in the middle, and the lower template is only formed after the partitions are relatively separated and bonded after the molds are pressed. The degree of movement will make the above temperature drop. Therefore, the design of conventional techniques for producing two-color soles has been shaped by the color blocks and the two-color sole limits of the upper and lower shoe molds. The difference in molding is not lowered in the upper and lower shoe molds, but it is cooled according to the different colors. The problem of the two soles falling off is the existence of multi-colored shoes, so there can be better one-to-one production. The two-color sole method has the following disadvantages that have yet to be worked out. Therefore, the two soles of the upper, upper, and lower colors are only measured by the inventor who opened the mold and took out the two soles of the same color that separated the template. Taking out the combined surface of the two soles and adding the two soles is only a lack of flat binding strength, which is a difficult problem to overcome. However, the soles and soles will contain several main purposes necessary to develop a sole that can produce strength. A method is provided to solve the above-mentioned problems. Since the mold set is designed as an upper mold, a lower mold and a lower mold cavity, the lower mold cavity and the upper mold cavity are respectively provided with a lower mold cavity and an upper mold cavity. An appropriate amount of melted rubber is injected into its cavity to manually place the appropriate amount of rubber, which can be separately placed on the upper part.

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Page 553819 _Case No. 90118826_ Year Month Date__ V. Description of the invention (3) Form the bottom and color blocks in the mold cavity and the lower mold cavity, and then remove the middle mold so that the upper and lower molds are relatively closed. , The large bottom and the color blocks can be combined with each other to form a card, thereby achieving the effect of forming two-color or multi-color rubber products. [Technical content] The present invention provides a method for forming a rubber by pressing. The method includes: first step: placing a predetermined amount of rubber material into a pouring machine, the pouring machine has a housing for the rubber material; And a hot-melt chamber that heats it to a molten state, the rubber material is placed in the hot-melt chamber, and the pouring machine is provided with a guide tube on one side of the hot-melt chamber; the second step: opening a facility A mold set on one side of the pouring machine, the mold set includes an upper mold, a middle mold and a lower mold, the lower mold is provided below the upper mold, and the middle mold is provided between the upper mold and the lower mold, and The upper surface of the upper mold is provided with a set of upper mold cavities, the upper surface of the middle mold is provided with a set of lower mold cavities, and the top surface of the lower mold is provided with a set of lower mold cavities corresponding to the upper mold cavity, and the middle mold The bottom surface is provided with a set of upper cavity of the lower cavity corresponding to the lower cavity of the lower mold. The third step: artificially insert a proper amount of rubber block into the lower cavity of the lower mold. The rubber block has the same rubber material system as the first step. For different colors

Page 6 553819 _Case No. 90118826_year month_Ifi_ V. Description of the invention (4) The sixth step: Close the upper mold and the middle mold, and the mold group will heat the middle mold and the upper mold to make the upper mold and the middle The rubber in the cavity above and below the mold forms the outsole; the seventh step: completely open the mold group to separate the upper mold, the middle mold and the lower mold, and then remove the middle mold. The lower mold is continuously heated to maintain the temperature of the outsole and the various color blocks, and then the upper mold and the lower mold are opposed to each other. Step 8: Close the upper mold and the lower mold so that the upper and lower molds are in the upper and lower cavities. It is integrally formed by inserting and combining with the color block in a state close to melting. The above and other objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of the selected embodiments below. Of course, the present invention allows some differences in the arrangement or arrangement of other parts, but the selected embodiment is described in detail in this specification and its structure is shown in the drawings. [Detailed description of the implementation examples] Please refer to FIG. 1 to FIG. 7. The figures show the structure of the selected embodiment of the present invention. This is for illustration purposes only and is not subject to this in patent applications. Structural restrictions. The invention relates to a method of rubber pressing and forming, which comprises the following steps: First step 11: Putting a predetermined amount of rubber material into a pouring machine (not shown in the figure), the pouring machine has a housing for the rubber material And a hot-melt chamber that heats it to a molten state, the rubber material is placed in the hot-melt chamber, and the pouring machine is provided with a guide tube 31 on one side of the hot-melt chamber. Second step 12: Open a mold set 2 set on one side of the pouring machine

Page 7 553819 Case No. 90118826 ^ __ Amendment V. Description of the Invention (5), the mold set 2 includes an upper mold 2 1, a middle mold 2 2 and a lower mold 2 3, and the upper mold 2 1 is provided below The lower mold 2 3 is provided, and the upper mold 2 1 and the lower mold 23 are provided with the middle mold 2 2. The bottom surface of the upper mold 2 1 is provided with a set of mold cavities a 1, and the top surface of the middle mold 2 2. A set of mold cavities a 2 is provided corresponding to the mold cavity a 1, and a set of mold cavities b 1 is provided at the top surface of the lower mold 2 3 corresponding to the mold cavity a 1, and a bottom surface of the middle mold 2 2 is provided corresponding to the mold cavity b 1.穴 b 2. The third step 13: artificially insert an appropriate amount of rubber block 41 into the cavity b 1 of the lower mold 23, as shown in FIG. 2 'the rubber block 41 has the same rubber material as the first step 11 as Different colors.

Fourth step 14: Close the middle mold 2 2 and the lower mold 2 3 and heat the middle mold 2 2 and the lower mold 2 3 by a heating mechanism (not shown) of the mold group 2 so that the cavity b 1 and The rubber in b 2 forms part B of the color block. Fifth step 1 5 ·· Introduce the guide tube 3 1 which is connected to the hot melt chamber of the pouring machine above the cavity a 2 of the middle mold 2 2, and the molten rubber 4 2 is injected from the guide tube 3 1 In the cavity a 2, as shown in FIG. 3, an appropriate amount of rubber 4 2 is injected according to different sizes and positions of the cavity a 2. Sixth step 1 6 ·· Close the upper mold 2 1 and the middle mold 2 2 and heat the upper mold 2 1 and the middle mold 2 2 by the mold group 2 to form the rubber 4 2 in the mold cavities a 1 and a 2 Outsole A, as shown in Figure 4.

Seventh step 17: completely open the mold group 2 to separate the upper mold 2 1, the middle core 2 2 and the lower core 2 3, and then remove the middle power 2 2, during which the private mold group 2 pairs the upper mold 2 1 Continue heating with the lower mold 2 3 to maintain the temperature of the outsole a and each color block B, and then make the upper mold 21 and the lower mold 2 3 face each other, as shown in FIG. 5. Eighth step 18: Close the upper mold 2 i and the lower mold 2 3, as shown in FIG. 6

Page 8 553819 Case No. 90118826 Amendment V. Invention Description (6) As shown in the description of the mold cavity a 1 is melted, each of the card holders is 3 due to the mold group 2 and the middle mold 2 2 corresponds to 1 respectively. In the mold cavity a 2, the guide tube 3 1 inserts the suitable cavities b 1 and b 2 into the mold cavity a 1 and a 2 and the block B, and then the middle mold 2 2 is molded, so that the outsole A and the You can achieve the two-color molding or sum up the above, the effect is as follows: 1 · Since the middle mold 2 2 b 1 is equipped with a color block B of the built-in color b 1, 2 The combination of the mutual drum card to form the chromophore block B and the above-mentioned implementations limit the present invention, so it belongs to the scope of the present invention. From the above details, and the color block B, the seventh figure, the cavity of the middle mold 2 2 3 is injected into the cavity a, 1 is inserted, and the molding bottom 2 is combined with the molding effect. The method can be increased closer to the fusion display. And the lower mold 2 a 1, b 1 and a 2, and the mold can be A and each color 3 respectively, by which, the following work, b 1 combined into a design of the upper, lower, b 2 The suitable mold six b is removed, and the large bottom A body in the multi-colored bright oak of each color block is formed, such as the upper mold 2 1 and the mold 2 1 and 2, and the soluble rubber 4 2 and the rubber block 4 1 and b 2 are respectively used. The upper and lower molds B interlock the rubber products to form a rubber composite corresponding to the upper and lower molds 2 1 and 2 3 of the cavity a 1, the cavity a 2 and b 2, and each of the lower mold 23 can be filled with a different color. Plastic materials, and forming different colors so that the manufactured soles can have multi-color changes. B is embedded in the upper and lower molds 21 and 23 when the mold is closed. The outsole A and the color block B are integrated in a nearly molten state, which can enhance the bonding strength to avoid the problem of the bottom A falling off. The disclosure of the examples is used to illustrate the present invention, and is not intended to change the numerical values or the replacement of equivalent components. It should still be specified so that those skilled in the art can understand the present invention.

Page 9 553819 Case No. 90118826 Revised

Page 10 553819 Case No. 90118826 Brief description of the revised drawing 1st series 2nd series 3rd series 4th series 5th series 6th series 7th series 8th series [Figure No. Said the first, third, fifth, seventh, mold, medium guide, large bottom cavity (this step, step, step group, 2, 2, tube, 3 A a 1) Schematic diagram of inserting rubber blocks Schematic diagram of injecting rubber tube into the cavity of the invention Schematic diagram of invented mold combination mold forming the outsole and color block Schematic diagram of the outward movement of the mold in the mold group Invention of the upper and lower mold clamping Schematic diagram showing the appearance of a multi-color rubber product formed by the invention. Schematic diagram of a rubber hot-pressing method. Explained part 17 a 2, b. Second step 1 2 Fourth step 1 4 Sixth step 1 6 Eighth step 1 8 Upper mold 2 1 Lower mold 2 3 Rubber 4 1, 4 2 Color block B b 2 Refer to 1111

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Claims (1)

553819 Case No. 90118826 Amendment VI. Patent application scope 1 · A rubber first, the molten state and the second pouring The mold set is provided with the shape method, which will hold a predetermined number of One side of the rubber material melting chamber includes: The rubber material and the rubber material are placed and provided with a pressure-conducting synthesis step: The injection molding machine and the melting chamber machine are in the thermal step: opening a casting machine provided with an upper mold and a lower mold and the A set of upper mold cavities is provided on the bottom surface of the upper mold and the upper mold, and a set of third rubber blocks of the lower mold cavity of the lower mold cavity is located on the bottom surface of the top surface of the lower mold. A fourth block of different colors is added to the lower mold to form a color block. Fifth, the inner cavity of the lower mold cavity is glued; sixth, the upper mold cavity is added, and the cavity; steps: the rubber middle mold and the lower mold are placed between the corresponding upper mold and the lower mold material. A pouring machine and heating it to melt the hot-melt chamber, a material tube; a mold set on one side, a lower mold, the middle mold under the upper mold, and an upper mold cavity corresponding to the top surface There is a set of mold cavities The appropriate amount of block is built into the mold cavity under the lower mold manually, and the rubber material in the first step is a step: the middle mold and the lower mold are closed, and the mold group heats the center mold to make the middle mold and the lower mold The rubber parts in the upper and lower mold cavities; Steps: Extend the guide tube that connects the hot melt chamber of the washing machine to the lower mold cavity, and the molten rubber will be injected from the guide tube, and it will be different according to the lower mold cavity. Inject the right amount of rubber into the size and position. Step: Close the upper mold and the middle mold, and heat the center mold from the mold group to make the rubber in the cavity above and below the mold. wcv: Yav— I 0 ϋ- Page 12 553819 _ Case No. 90118826_ Amendment Date 6. Application scope of patents' to form a big bottom; Step 7: Fully open the mold set to separate the upper mold, middle mold and lower mold, and then remove the middle mold During the period, the upper mold and the lower mold are continuously heated by the mold group to maintain the temperature of the outsole and each color block, and then the upper mold and the lower mold are opposed; the eighth step: close the upper mold and the lower mold so that the upper mold and the The large bottom and the color block above the lower mold cavity and the color block are inserted and integrated with each other in a nearly molten state. Page 13