TWI840231B - Gasket continuous forming method and forming mold thereof - Google Patents

Abstract

A gasket continuous molding method has the following steps: a first gasket string having gaskets connected in sequence is molded in a mold, the first gasket string having a last gasket; then when the mold is opened, the first gasket string is pulled out, and when the mold is closed, the last gasket is placed on a clamping cavity of the mold; a second gasket string is molded by a second injection molding, the first gasket at the front end of the second gasket string is connected head to tail with the last gasket of the first gasket string, thereby achieving the function of connecting the first gasket string together when performing the second injection molding, so as to achieve the effect of continuous molding, simplify the manufacturing steps and reduce the manufacturing time, and have the effect of low manufacturing cost and high efficiency.

Description

Gasket continuous forming method and forming die thereof

The present invention relates to a gasket, and in particular to a continuous forming method of a gasket for a nail gun and a forming die thereof.

It is known that the plastic gasket used with the nail gun is arranged on the nail gun, and the nail gun can be used together with the plastic gasket when firing. At the same time, the nail of the nail gun first passes through the plastic gasket and then is nailed into the waterproof paper (or sound insulation cloth) and the wall surface, so that the nail is more firmly combined with the waterproof paper (or sound insulation cloth) through the gasket.

In terms of manufacturing, the gasket molding method provided in U.S. Patent No. 7207095 injects materials through a plurality of molds to form a plurality of connected gasket strings, and the gasket strings formed by each mold are not connected to each other, so each gasket string must be connected to each other through, for example, high frequency, resulting in high manufacturing costs and complicated processes, and making it impossible to effectively improve manufacturing efficiency.

In view of this, how to solve the above problems is the primary issue that the present invention intends to solve.

The main purpose of the present invention is to provide a gasket continuous molding method and a molding mold thereof, wherein the last gasket of a gasket string after injection molding has a connecting portion, and during the second injection molding, the last gasket of the previous injection molding is molded together to connect the gasket at the front end of the second molding with the last gasket of the previous injection molding through the connecting portion, thereby achieving continuous injection manufacturing, and having the effect of low manufacturing cost and high efficiency.

To achieve the above-mentioned purpose, the present invention provides a gasket continuous molding method and a molding mold thereof, comprising the following steps: a. molding a first gasket string in a mold, the first gasket string having a plurality of gaskets, the gaskets having at least one connecting portion between them and being sequentially connected, the first gasket string comprising a first gasket at the front end and a last gasket at the end, the last gasket extending downward and outward at one end away from the first gasket to form a first connecting portion; b. after the mold is opened, the first gasket string is pulled out, the mold having a mold cavity for molding the gaskets and a clamping mold cavity at the front end of the mold cavity, and when the mold is closed, the last gasket is set in the clamping mold cavity to be covered by the clamping mold cavity; c. Perform a second injection molding to form a second gasket string, wherein a first gasket at the front end of the second gasket string extends outward to form a second connecting portion connected to the last gasket of the first gasket string, and an upper first connecting portion is formed along the upper edge of the first connecting portion.

Preferably, the mold cavity and the clamping mold cavity are formed by combining a female mold and a male mold of the mold, and the male mold has a groove facing downward and outward at one end of the mold cavity away from the clamping mold cavity, and the clamping mold cavity has a groove facing downward and outward at one end of the mold cavity.

The present invention further provides another gasket continuous molding method, including the following steps: a. Molding a first gasket string in a mold, the first gasket string having a plurality of gaskets, each of which is connected in sequence with at least one connecting portion between the gaskets, the first gasket string including a first gasket at the front end and a last gasket at the end, the last gasket extending downward and outward at one end away from the first gasket to form two first connecting portions arranged at intervals; b. After the mold is opened, the first gasket string is pulled out, the mold has a mold cavity for molding each gasket and a clamping mold cavity at the front end of the mold cavity, and when the mold is closed, the last gasket is set in the clamping mold cavity to be covered by the clamping mold cavity; c. Perform a second injection molding to form a second gasket string, wherein the bottom edge of a first gasket at the front end of the second gasket string is connected to the top surface of the first connecting portion of the first gasket string.

Preferably, the mold cavity and the clamping mold cavity are formed by combining a female mold and a male mold of the mold, and the male mold has two spaced grooves facing downward and outward at one end of the mold cavity away from the clamping mold cavity, and the clamping mold cavity has two spaced grooves facing downward and outward at one end of the mold cavity toward the mold cavity.

The above-mentioned objects and advantages of the present invention can be more clearly understood from the detailed description and accompanying drawings of the following selected embodiments.

First, please refer to Figures 1 to 6, which are the first embodiment of the gasket continuous molding method provided by the present invention, which is to inject and mold the gasket through a mold 1, wherein:

The mold 1 is composed of a female mold 11 and a male mold 12. The mold 1 forms a mold cavity 13 for molding each gasket and a clamping mold cavity 14 at the front end of the mold cavity 13 by closing the female mold 11 and the male mold 12. The male mold 12 has a groove 131 facing downward and outward at one end of the mold cavity 13 away from the clamping mold cavity 14, and the clamping mold cavity 14 has a groove 141 facing downward and outward at one end of the mold cavity 13.

When the gasket is actually formed, the mold 1 is used to form a first gasket string 2. The first gasket string 2 has a plurality of gaskets, and the gaskets are sequentially connected with each other by at least one connecting portion. The first gasket string 2 includes a first gasket 21 at the front end and a last gasket 22 at the end. The last gasket 22 has an end away from the first gasket 21 and extends downward and outward to form a first connecting portion 23 corresponding to the position of the groove 131.

After the mold 1 is opened, the first gasket string 2 is pulled out by a pulling mechanism (not shown), and the portion of the last gasket 22 is covered by the clamping cavity 14 when the mold 1 is closed.

A second injection molding is performed to mold a second gasket string 3. A first gasket 31 at the front end of the second gasket string 3 extends outward to form a second connecting portion 32 connected to the last gasket 22 of the first gasket string 2, and an upper first connecting portion 33 connected to the first connecting portion 23 is formed along the upper edge of the first connecting portion 23.

The present invention uses plastic injection molding to produce gaskets for use with nail guns. Please refer to FIG. 1 for the step flow of the present invention. As shown in FIG. 2, first, the female and male molds of the mold 1 are molded together to inject materials to form a first gasket string 2 in the mold cavity 13; then, as shown in FIG. 3, after the mold 1 is opened, the first gasket string 2 is pulled out by a pulling mechanism, and the last gasket 22 is covered by the clamping mold cavity 14 when the mold 1 is closed; finally, as shown in FIG. 4, a second injection molding is performed to form a second gasket string 3. , and the first gasket 31 at the front end of the second gasket string 3 is connected to the last gasket 22 of the first gasket string 2 by the second connecting portion 32 and the upper first connecting portion 33, respectively, so that the second gasket string 3 and the first gasket string 2 can be connected during the second injection molding. The above steps can achieve the effect of continuous injection molding, and achieve the function of connecting the previous gasket string together during the current injection molding, without the need to add additional ways to connect the gasket strings to simplify the manufacturing steps and reduce the manufacturing time, and have the effect of low manufacturing cost and high efficiency.

Please refer to Figures 7 to 9, which are a second embodiment of the gasket continuous molding method provided by the present invention. The difference between the second embodiment and the first embodiment is that in this embodiment, the male mold 12a of the mold 1a has two spaced grooves 131a facing downward and outward at one end of the mold cavity 13a away from the clamping mold cavity 14a, and the clamping mold cavity 14a has two spaced grooves 141a facing downward and outward at one end toward the mold cavity 13a, and the last gasket 22a of the first gasket string 2a has a first connecting portion 23a extending downward and outward at one end away from the first gasket to form two corresponding grooves 131a.

The above structure is actually applied to a gasket continuous molding method, wherein the first gasket string 2a is first molded in the mold, and then when the mold 1a is opened, the first gasket string 2a is pulled out by a pulling mechanism, and when the mold 1a is closed, the last gasket 22a is set in the clamping cavity 14a to be covered by the clamping cavity 14a, and then the second injection molding is performed to mold. The second gasket string 3a, and the bottom edge of the first gasket 31a at the front end of the second gasket string 3a is connected to the top surface of the first connecting portion 23a of the first gasket string 2a. The above steps can also achieve the effect of continuous injection molding without adding additional ways to connect the gasket strings to simplify the manufacturing steps and reduce the manufacturing time, and also have the effects of low manufacturing cost and high efficiency.

The disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Therefore, any change in numerical values or replacement of equivalent elements should still fall within the scope of the present invention.

In summary, those familiar with the art will be able to understand that the present invention can achieve the aforementioned purpose and is in compliance with the provisions of the Patent Law, and therefore can file an application in accordance with the law.

1, 1a: mold 11: female mold 12, 12a: male mold 13, 13a: mold cavity 131, 141, 131a, 141a: groove 14, 14a: clamping mold cavity 2, 2a: first gasket string 21: first gasket 22, 22a: last gasket 23, 23a: first connecting part 3, 3a: second gasket string 31, 31a: first gasket 32: second connecting part 33: first connecting part of upper layer

Figure 1 is a step flow chart of the first embodiment of the present invention; Figures 2 to 4 are schematic diagrams of the operation of the first embodiment of the present invention; Figure 5 is a schematic cross-sectional diagram of the first embodiment of the present invention; Figure 6 is a schematic plan view of the gasket string of the first embodiment of the present invention, used to indicate that it has a first connecting portion; Figure 7 is a schematic plan view of the mold of the second embodiment of the present invention without injection; Figure 8 is a schematic cross-sectional diagram of the second embodiment of the present invention; Figure 9 is a schematic plan view of the gasket string of the second embodiment of the present invention, used to indicate that it has two first connecting portions.

Claims (7)

A gasket continuous molding method includes the following steps: a. molding a first gasket string in a mold, the first gasket string having a plurality of gaskets, the gaskets having at least one connecting portion between them and being connected in sequence, the first gasket string including a first gasket at the front end and a last gasket at the end, the last gasket extending downward and outward at one end away from the first gasket to form a first connecting portion; b. after the mold is opened, the first gasket string is pulled out, the mold has a mold cavity for molding the gaskets and a clamping mold cavity at the front end of the mold cavity, and when the mold is closed, the last gasket is set in the clamping mold cavity to be covered by the clamping mold cavity; c. Perform a second injection molding to form a second gasket string, wherein a first gasket at the front end of the second gasket string extends outward to form a second connecting portion connected to the last gasket of the first gasket string, and an upper first connecting portion is formed along the upper edge of the first connecting portion. A gasket continuous molding method includes the following steps: a. molding a first gasket string in a mold, the first gasket string having a plurality of gaskets, the gaskets having at least one connecting portion between them and being connected in sequence, the first gasket string including a first gasket at the front end and a last gasket at the end, the last gasket extending downward and outward at one end away from the first gasket to form two first connecting portions arranged at intervals; b. after the mold is opened, the first gasket string is pulled out, the mold has a mold cavity for molding the gaskets and a clamping mold cavity at the front end of the mold cavity, and when the mold is closed, the last gasket is arranged in the clamping mold cavity to be covered by the clamping mold cavity; c. Perform a second injection molding to form a second gasket string, wherein the bottom edge of a first gasket at the front end of the second gasket string is connected to the top surface of the first connecting portion of the first gasket string. A gasket continuous molding method as described in claim 1, wherein the mold cavity and the clamping mold cavity are formed by combining a female mold and a male mold of the mold, and the male mold has a groove facing downward and outward at one end of the mold cavity away from the clamping mold cavity, and the clamping mold cavity has a groove facing downward and outward at one end of the mold cavity. A gasket continuous molding method as described in claim 2, wherein the mold cavity and the clamping mold cavity are formed by combining a female mold and a male mold of the mold, and the male mold has two spaced grooves facing downward and outward at one end of the mold cavity away from the clamping mold cavity, and the clamping mold cavity has two spaced grooves facing downward and outward at one end of the mold cavity toward the mold cavity. A gasket continuous forming mold, comprising: A mold, having a female mold and a male mold, the female mold and the male mold form a mold cavity and a clamping mold cavity at the front end of the mold cavity after the mold is closed, the mold is used to form a gasket string, wherein the gasket string includes a first gasket string and a second gasket string formed after the first gasket string, when the mold forms the first gasket string, the first gasket string is pulled out, and when the mold is closed, the last gasket of the first gasket string is set in the clamping mold cavity to be covered by the clamping mold cavity, and when the mold forms the second gasket string, the first gasket of the second gasket string is connected to the last gasket of the first gasket string. A gasket continuous forming mold as described in claim 5, wherein the male mold has a groove at one end of the mold cavity away from the clamping mold cavity, which is concave downward and outward, and the clamping mold cavity has a groove at one end of the mold cavity, which is concave downward and outward. A gasket continuous forming mold as described in claim 5, wherein the male mold has two spaced grooves that are concave downward and outward at one end of the mold cavity away from the clamping mold cavity, and the clamping mold cavity has two spaced grooves that are concave downward and outward at one end of the mold cavity toward the mold cavity.

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