TWI232166B - The methods of manufactures for fin - Google Patents

Abstract

A fin is formed using a sectional mould, in which two material injecting units are provided to simultaneously inject the material for forming the fin into the mould, so that a front blade portion and a rear foot pocket portion of the fin are formed at the instant of injection to produce a complete fin. The two injecting units may be preset or adjusted to optimal injecting time and pressure according to a flow rate of the type of molten material, so that the molded blade portion and foot pocket portion are fully connected together to have the best bonding strength between them.

Description

1232166 V. Description of the invention (1) [Technical field to which the invention belongs The present invention relates to a method for making squats and dehydration b I. The rain part can be formed at the same time in the injection room, and the heart is seeded before the web, and the color of the finished product is adjusted It can also take into account the strength of the combination with 'only the industrial utilization price [previous technology] I traditional materials used in making webs are often-for the webs made of plastic, plastic is long, but because of plastic Material I's more rigid to be difficult to wear. It also uses rubber household 彳 g 成 二 #, which has less ductility and is more comfortable to wear. The "web liter" made by injection molding of raw materials makes it uncomfortable and slippery after wearing = suitable. I composite molding method. Two different original Morihara second readings: A to four D ', the manufacturing method shown above, as the raw material' and the rubber is a thermosetting raw material;

If%: m 180 °), after the chemical change into vulcanization, thermosetting, cross-linking, bridging), it is integrated into one, that is, the one with the best foot cover. Although the cost of the rubber is solid and ductile, the cost of the whole is too long; ‘to be able to make large categories with efficacy / materials. A plastic stiff, today's two wearing fins are rubber thermoset terminology

Page 5 1232166 V. Description of the invention (2) Cooling process; this is in the fourth A to the fourth mold B 5 1 group 5 2 and the semi-solid semi-solid raw material on the web. The front web 4 1 is a combination of 5 2 and 5 3 Mold 50 and the same material of the fourth material (Figure C)), the first part of the mold part of the mold part a made of D, a 8 shot and the material of the foot 5 1 closed 8 or 9 There are 5 3 in the middle, and it is more suitable to put it in the mold cavity. 4 Phases: After (the ginseng is formed after semi-solidification, the glue is soft and hard, and the strength is excellent. This method is tied to the mold clamping A 5 0 The lower half of the web cavity aligned with each half of the web is made of harder materials 5 2 and 5 3 respectively, and the web 4 is elastic and the raw material b 9 is placed in the cavity (see Figure A). (See figure 4B), you can combine the two states into one (see the finished web 4 product. Refer to the figure, the material of which is 6, 2, the material is better than the shot) '4 The front web is buried in 7 2 Sexual original charging foot cover (see

After reading the fifth step of forming the first mold clamping hard and shooting 4 1 from the mold matching place a mouthwash material b shot 4 2 fifth EA map, the first auxiliary mold A 6 material a, as expected in Finished product C and (refer to the entrance of B 7 and make the picture) 0 smooth cooling and washing of the mouth (refer to the 3rd, and the sum of the two, and the two kinds of two molds B 6 are equipped with injection gates where appropriate) After the mold is opened, A 6 3 is taken out to form the fifth D drawing of the fifth C drawing D). After injection, the A 6 3 sample is only provided in the cooling molding sub-die 1 before the closed mold has been formed. (Toppings). Connect the two vice molds and close the mold 2 7 4 and then open the original web 4 1 and then set the bill of materials. After seeing A, cut the C position in the tool and take out the material b into the web. In addition, the front webbing is completed with a soft half of the foot, and the half of the webbing mold cavity 6 is better. 4 The mold is closed and B is the webbing 4 1 The mold cavity cover 4 2 has a combination of pop-in, filling (see

Page 6 1232166 V. Description of the invention (3) Please read the fifth figure F), and then cut the gate B 7 5 formed by the gate B 7 3 to obtain the finished web 4. Please also refer to an approved patent case, the case number of which is 3 3 9 2 6 5 and the case of the midsole, and the name is the process of multi-tube injection of multi-density shoe materials. The technical content is: A multi-tube injection multi-density shoe material manufacturing process is mainly used in the midsole injection molding process. At least two channels are connected to the used mold, and injection is performed by using pressure, speed, material quantity, time difference, etc. Under the conditions, different materials such as PP, TPU, NYLON, etc. are shot simultaneously from each sprue into the mold, and various compatible materials are fused to each other in the mold to achieve the integrated production of the sole of the shoe, and The midsole of the shoe can adjust the joint ratio of the soft and hard parts of the front and rear sections to adjust the joints to suit the actual users of various types of shoes. [Summary] Technical problems to be solved: However, the aforementioned two manufacturing methods used in the industry today have the following existing disadvantages: 1. Although the manufacturing method of the first method seems simple, but the raw materials are in open molds. If you put in raw materials, you must have more margin so that the finished product will not run out of material. In this way, a lot of burrs will be generated, which will increase the cost of trimming burrs. And this kind of raw materials must be thermosetting and need to undergo chemical change. period time

Page 7 1232166 V. Description of the invention (4) is very long, about 4 to 5 times the injection, and the amount of input and placement of the material complicates the manufacturing process, and the mold temperature is as high as about 180 degrees, requires experience The qualified technicians are competent, which is not conducive to mass production and cost reduction; at the same time, chemical changes make it difficult to control color and the finished product does not have consistent characteristics.

2. If the general two-color injection molding mechanism is used, it can be seen that the cost of equipment such as molding machines and molds is extremely expensive. For example, when changing between two sets of molds, in order to change the molds for the first injection and the second injection, there must be an oil pressure mechanism in the mold to retreat the cavity neutrons. After injection, it will be reversed, and the mold clamping mechanism must have a template rotation device. Therefore, compared with the general injection molding method, the mold cost is about 4 times and the molding machine cost is about 2 to 3 times. And the extra necessary special accessories are not to mention the price, so they have no industrial utilization value.

3. In the second method, the finished web product is placed in the second mold again before the first mold is completed to achieve the integrity of the finished web product, but before the completion of the first mold, if the tip A of the web is not removed Ideal flatness. In this way, when the shot is formed in the second pair of molds, if the docking position of the front web and the foot cover is the best position originally expected, you must wait until the finished product is completed. Therefore, it is very difficult to control and pre-check the joints with butt joints. 4. In the second method, the finished product of the front web and the foot cover expected to be shot in the second pair of molds, one of which is solid and the other is semi-liquid.

Page 8 1232166 V. Description of the invention (5) The bonding strength of the bonding interface is also as shortcoming as the first method. 5. In the second method, the topping heads A and B, which have been injection-molded twice, are not cut off at one time, but must be completed in two times. The manufacturing method and the working line process arrangement overlap, and there is no single process. Timeliness with efficiency.

6. In the technology disclosed in the third method, although different materials can be shot into the mold from each material channel at the same time, various miscible materials are mutually melted in the mold to achieve the integrated production. The midsole of a shoe has many limitations, such as the material must be compatible, and the case is a technical content and application field of footwear. Technical means to solve the problem:

For this reason, the inventors have redesigned and improved the shortcomings of the above-mentioned conventional products, and achieved the expected effect of a strong combination of the product as a whole, color deployment, and production equipment costs, which can further reduce the expected effects. Practical invention. The main purpose of the present invention is to provide a web-making method, in which a mold A of a combined mold is located at the front of the web and the two molds close to the rear end of the foot cover, and a gate for injection of raw materials is provided respectively. And connected by the outer edge of the gate

Page 9 1232166 V. Description of the invention (6) The velocity of the two injection units are adjusted to the appropriate injection time and pressure according to the different raw materials in the molten state, so that the instants of simultaneous injection of raw materials can be achieved at the same time. The combination of the webbing and the foot cover before the webbing is formed at the same time within a predetermined time, and the webbing and the foot cover are completely integrated before the forming, and the bonding strength is at the highest level. Contrast the efficacy of the prior art: A second object of the present invention is to provide a web-making method. The manufacturing equipment used only needs to set up another set of injection units on the injection molding machine of a traditional single injection unit to achieve the expectations. Efficacy has the effect of significantly reducing equipment procurement costs and improving industrial competitiveness. Another object of the present invention is to provide a web-making method, which is configured with two injection units, and the web requires different softness due to the different functions and functions of the front web and the foot cover. There are two different raw materials for injection, which can make the front web and foot cover different colors after injection molding, and also have a product color design and increase product diversity. The invention also meets the significance of progressiveness as explained in Patent Examination Benchmarks on pages 1-2-26, lines 21-24. To enable the reviewers to further understand the present invention,

Page 10 1232166

1232166 V. Description of the invention (8) 5 2 ... mold cavity in the lower half of the web 5 3 ... mold cavity in the upper half of the web

6 0 ... clamp A

6 1… Clamp B 6 2… Front web cavity 6 3… Gate A 6 4… Ejection unit 1 6 5… Head 8

7 0… clamp C

7 1… clamp D 7 2… complete web cavity 7 3… head B 7 4… shooting unit 2 7 5… head B 8… raw a 9… raw bs N: single material tensile strength s W: weld line Strength s CW: Joint strength

s H W: Joint strength compounded at the same time. [Embodiment] Please refer to the first and second figures, the main motivation of the web-making method of the present invention is

Page 12 1232166 V. Description of the invention (9) The structure derived from the web 4 can be divided into a web 4 4 with a water skiing effect, and a foot cover 4 2 for the user to step into and locate the foot. The front web 4 1 It is necessary to have a certain hardness between the water skiing movements in the water, so a harder material is better; the foot cover 4 2 is set on the foot. If the hard material is too strong, it will make the foot sensitive. Lower and even cause ankle injuries, so it is better to use softer and more elastic materials. Therefore, the present invention adopts a combined mold 1 composed of a clamping mold A 1 0 and a clamping mold B 1 1 on the equipment, which are respectively before the lower web cavity 1 2 provided in the clamping mold A 1 0. A suitable gate A1 4 is provided through the web 4 at a suitable position, and the combination interface of the two molds 10 and 11 is located at the rear end of the foot cover 4 2 and another gate B 1 5 is also provided. 1 1 is provided with an upper half mold cavity 1 3 of the other half. The injection nozzle of gate A 1 4 is to be abutted with the injection unit A 2 when the combined mold 1 is closed and pushed to the fixed point of the injection, and the injection nozzle of gate B 1 5 is injected with another group. The material unit B 3 is buttedly arranged; the material in the injection unit A 2 is a material a 8 which is harder for forming the front web 4 1, and the material in the material unit B 3 is softer and more flexible for forming the foot cover 4 2. Raw material b. In this way, when the present invention is used to manufacture the web 4, the steps are as shown in the second A diagram. The mold B 1 1 which is reciprocated by the injection molding machine is first pushed to the mold A 1 0 to complete the closed mold positioning operation, and then The two injection units 2 and 3 adjacent to the mold clamping A 1 〇 are advanced respectively, and the injection unit A 2 and the gate A 1 4 and the injection unit B 3 and the gate B 1 5 are completed and positioned (refer to

Page 13 1232166.,% V. Description of the invention (10) (See Figure 2B), and start the two injection units 2 and .3 at the same time to make them injection molding. However, because the shooting unit A2 and the shooting unit B 3 contain different raw materials, the fluidity is also different when the shooting material is melted into a semi-liquid. Therefore, the shooting unit A 2 and the shooting unit can be adjusted separately in advance. The injection pressure required by the material unit B 3 enables it to be controlled to cooperate with the operation completed at the same time. The combined mold 1 for injection is located in front of the web 4 and the web 4 1 is filled with the raw material a 8, and the foot cover 4 2 is the raw material b 9. Because the two raw materials are combined in a molten semi-liquid, the The bonding interface between them is tightly integrated, and the bonding strength and service life can reach the ideal optimal demand state. [Refer to the second figure C] There is still gate A 1 4 and gate B 1 5 on the semi-finished product taken out after forming, cooling and opening. After the injection, the gate A 2 1 and gate B 3 1 are formed. That is, the finished web 4 is shown in the first picture and the second picture C. Referring to the third A to C charts, the technical principles of the present invention and the bonding strength of the finished product will be illustrated by the following description and test chart data to confirm. Among them, the third image A and the third image B are respectively two kinds of raw materials for injection molding, and the third image C shows the two different materials of the third image A and the third image B in the same mold. situation. Its codes are expressed as s N: tensile strength of a single material, s W: melting line strength, s C W: joint strength, and s H W: joint strength simultaneously compounded. It is expected that the original system is the method, the second is the second, the second is the first, the first is the contract, the first is the contract, the first is the S, and the third is the Tushankan.

Page 14 1232166 V. Description of the invention (11) The inherent tensile strength sN is 1/5. As for the sCW in Figure (b), it is about 5Mpa, and it is only 1/10 of sN. From this, it can be known that in the conventional two-shot molding method, no molecular entanglement occurs between the finished piece and the molten resin, so the bonding strength is low. However, when the third C picture produced by the manufacturing method of the present invention is shot at the same time, the joint strength s HW is about 3 OMp a, which is three times that of the aforementioned molding, because both raw materials are in a molten state. The following are all compatible, and the interface pressure can be set individually. Of course, the results obtained can also be optimized as required.

In summary, the webbing method of the present invention is a webbing and a foot cover before the webbing can be formed at the same time between shots, and the bonding strength between them can be optimized. The color matching of the finished product can also be taken into account. The equipment purchase cost can be greatly reduced, which is suitable for large-scale production and has real industrial use value. And its structure has never been seen in books or publicly used, and it is in line with the requirements for new patent applications. We sincerely ask Jun Bureau to make a clear reference and grant the patent as soon as possible.

Those who need to know, the above are the specific embodiments of the present invention and the technical principles used. If the changes are made according to the concept of the present invention, the functional effects still have not exceeded the spirit covered by the description and drawings. In this case, they should all fall within the scope of the present invention.

Page 15Ϊ232166 _Case No. 92107674_ Year, Month, and Day Revised Drawings Brief Description Figure 5A is a flowchart of the manufacture of another conventional web; Figure 5B is a flowchart of the manufacture of another traditional web; Fifth C The figure is a flowchart of the manufacture of another conventional web; the fifth diagram D is a flowchart of the manufacture of another traditional web; the fifth diagram E is a flowchart of the manufacture of another traditional web;

The fifth F chart is a flowchart of another conventional web manufacturing method.

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Claims (1)

1232166 month g amendment 92107674 6. Application scope of patents-1 · A webbing method, the webbing is a webbing that fits on the ankle's foot before putting on force when swimming; on the foot, there is an additional stroke provided-a mold, which is made of Can be opened; Ur step is: the w section in the fork is the front web forming area, the rear section is composed of feet ^, and the web forming area and the foot cover forming area are respectively oriented, corresponding to the first two gates; The first gate and the second provide two injection units, which are divided into raw materials with different hardness;, the next day between the pressure and the pressure to close the two mold halves; so that the two injection units and the mold respectively _; Yaokou _ French total shots, according to different injection time one = mouth connection; at the same time, the higher hardness of the original "mouth two :: the original hardness of the material unit and the first washing mouth shot :: also mouth shot The raw material injected into the lower mouth is formed into a foot cover, and two parts are combined; and the second washing liquid is combined; the raw material is melted in half: but the mold is opened. After the raw material is cooled and shaped, it is cut and cut, and the shampoo is cut. , Exit into ° mouth, so, law ... two ... Page 18