KR101526894B1 - Injection Mold for Plug of Easily Putting in Insert - Google Patents

Injection Mold for Plug of Easily Putting in Insert Download PDF

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Publication number
KR101526894B1
KR101526894B1 KR1020130140487A KR20130140487A KR101526894B1 KR 101526894 B1 KR101526894 B1 KR 101526894B1 KR 1020130140487 A KR1020130140487 A KR 1020130140487A KR 20130140487 A KR20130140487 A KR 20130140487A KR 101526894 B1 KR101526894 B1 KR 101526894B1
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South Korea
Prior art keywords
insert
plug
mold
fixing plate
core
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KR1020130140487A
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Korean (ko)
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KR20150057306A (en
Inventor
우화성
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삼원금형정공주식회사
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Priority to KR1020130140487A priority Critical patent/KR101526894B1/en
Publication of KR20150057306A publication Critical patent/KR20150057306A/en
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Publication of KR101526894B1 publication Critical patent/KR101526894B1/en

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Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug injection mold, and more particularly to a plug injection mold having an upper mold constituting an upper side of an injection mold; A lower mold having a core portion which is shaped and shaped with the upper mold and which is seated inside; And the insert part is inserted into the insert insertion part, and the other end of the insert is inserted into the cavity of the cavity, The molten resin is injected into the cavity while the insert insert and the core are in contact with each other so that the insert can be easily inserted and the waiting time for insert insertion can be shortened, In the case of separating the insert inserting portion from the lower mold, the insert inserting portion and the plug are separated from each other while the insert is inserted into the insert inserting portion, thereby making it easy to take out the plug by using the insert inserting portion On a plug injection mold which is easy to insert insert The.

Description

[0001] The present invention relates to a plug injection mold,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug injection mold, and more particularly to a plug injection mold having an upper mold constituting an upper side of an injection mold; A lower mold having a core portion which is shaped and shaped with the upper mold and which is seated inside; And the insert part is inserted into the insert insertion part, and the other end of the insert is inserted into the cavity of the cavity, The molten resin is injected into the cavity while the insert insert and the core are in contact with each other so that the insert can be easily inserted and the waiting time for insert insertion can be shortened, In the case of separating the insert inserting portion from the lower mold, the insert inserting portion and the plug are separated from each other while the insert is inserted into the insert inserting portion, thereby making it easy to take out the plug by using the insert inserting portion On a plug injection mold which is easy to insert insert The.

An injection mold is a mold for producing a plastic product, and a hollow space (hereinafter referred to as a cavity) corresponding to the shape of a product to be manufactured is formed in the mold. When the molten resin is injected into the cavity and cooled, A product having a shape corresponding to the shape is manufactured.

1, a power plug (hereinafter, referred to as a "plug") inserted into a power outlet and used as a power applying means is also manufactured using an injection mold. A metal insert 103 is inserted to allow electric current to be transmitted. One end 103a of the insert 103 is formed so as to protrude from the side of the plug body 101 where the plug 101 is inserted into the power outlet and the other end 103b of the insert 103 is formed to protrude into the inner space of the plug body 101 So that it can be connected to electric parts such as electric wires.

In general, an injection mold for manufacturing a plug having an inserted insert therein includes a plate-shaped upper plate constituting an upper side of a mold; A lower plate formed on the lower side of the upper plate and closed to come in contact with the upper plate; And a core portion formed between the upper plate and the lower plate to form a cavity having a plug body shape at the time of mold-clamping. In the state where the insert is manually inserted into the core portion, resin is injected into the cavity, Lt; / RTI > Therefore, there is a problem in that productivity is poor due to a long waiting time for inserting the insert, and there is no means for fixing the insert, so that when the resin is injected or the mold is moved, the insert can not be fixed, There was a problem of being lost and lost. Also in the following patent documents, the insert has to be inserted into the cavity by hand manually, so that the productivity has been reduced.

(Patent Literature)

Korean Patent Laid-Open Publication No. 10-2004-0025570 "Insert molding product and molding die for production thereof"

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The present invention relates to an injection mold comprising: an upper mold constituting an upper side of an injection mold; A lower mold having a core portion which is shaped and shaped with the upper mold and which is seated inside; And the insert part is inserted into the insert insertion part, and the other end of the insert is inserted into the cavity of the cavity, The molten resin is injected into the cavity while the insert insert and the core are in contact with each other so that the insert can be easily inserted and the waiting time for insert insertion can be shortened, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a plug injection mold which is easy to insert.

In the present invention, when the insert insert is separated from the lower mold, the insert insert and the plug are detached together with the insert being inserted into the insert insert, thereby facilitating the insertion of the insert to facilitate extraction of the insert using the insert insert. The purpose of the plug injection mold is to provide.

The present invention is characterized in that it includes an insert insertion portion including an insert fixing plate into which an insert is inserted and fixed, and the insert fixing plate includes an insert insertion hole formed in a lower surface of the insert fixing plate to insert the insert, The insertion waiting time for inserting inserts can be reduced and the plugs inserted with the inserts can be removed together with the inserts inserted into the insert fixing plates even when the insert is released, The purpose is to provide a mold.

The present invention includes an insert fixing plate including a replacement plate that is interchangeably inserted into a lower surface of an insert fixing plate, and an insert insert hole is deformed by a repetitive injection process so that an insert insert hole is formed in the replacement plate, In case the resin leaks due to abrasion of the parts that come into contact with the core part, it is possible to replace only the replacement plate, thereby facilitating the maintenance of the quality of the injected plug and saving the maintenance cost. The purpose of the plug injection mold is to provide.

The present invention is characterized in that it comprises a receiving groove formed by being inserted into the upper outer side of the insert inserting hole and an inserting hole including a holding means fixed to the receiving groove to hold an insert inserted into the insert inserting hole, The insert inserted into the insert insertion hole can be fixed without being moved, so that the insert can be fixed at the correct position without moving even when the resin is injected, and the plug inserted with the insert can be separated from the inserted insert insertion hole And an object of the present invention is to provide a plug injection mold which can easily insert the plug so that the operation time can be shortened.

The present invention is characterized in that a plurality of inserts are inserted into a core in a state in which a plurality of inserts are inserted into one insert fixing plate, and when one insert fixing plate is detached from the insert, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a plug injection mold which can easily insert inserts, which can shorten the working time and improve the productivity.

It is an object of the present invention to provide a plug injection mold which is easy to insert inserts so that a plurality of plugs including a plurality of insertion inserts can be injection-molded at the same time, thereby improving the productivity of the plug.

The present invention includes an insert inserting portion including a moving pin inserted into an insert fixing plate to move an insert fixing plate, and the insert fixing plate includes a movable pin fitting groove formed to be embedded in both lower side surfaces, It is an object of the present invention to provide a plug injection mold which can easily insert the plug by allowing the insert fixing plate into which the plug is inserted to rise as the movable pin rises upon taking out the plug.

The present invention relates to an inner core which is fixed to a lower mold and has the same outer shape as the inner shape of the plug; And a core portion which is formed on both sides of the inner core and slides along the upper surface of the lower mold and has an outer surface having the same inner surface as the outer shape of the plug, The plug injection mold can easily insert an insert into which the insert is inserted so that the insert can be easily taken out.

In order to achieve the object of the present invention, a plug injection mold which can easily insert inserts has the following structure.

According to an embodiment of the present invention, there is provided a plug injection mold having an insert capable of easily inserting, comprising: an upper mold constituting an upper side of an injection mold; A lower mold having a core portion which is shaped and shaped with the upper mold and which is seated inside; And an insert insertion portion inserted and supported by a body of the plug, wherein the core portion forms a cavity of a plug body shape, the insert insertion portion being inserted into one of the insert insertion portions, The molten resin is injected into the cavity while the other end of the insert is inserted into the cavity so that the insert is inserted into the cavity so that the inserted plug is injected .

In the plug injection mold according to another embodiment of the present invention, the insert insertion portion includes an insert fixing plate to which the insert is inserted and fixed. The insert fixing plate is formed on a lower surface of the insert fixing plate, And an insert insert hole for inserting the insert.

According to still another embodiment of the present invention, there is provided a plug injection mold having an insert insertion hole, wherein the insert fixing plate includes a replacement plate that is inserted into the lower surface of the insert fixing plate so as to be replaceable, .

According to another aspect of the present invention, there is provided a plug injection mold having an insert insertion hole, the insert insertion hole having a receiving recess formed outside the upper portion of the insert insertion hole, And gripping means for gripping the insert inserted into the insert.

In the plug injection mold according to another embodiment of the present invention, a plurality of insert insert holes are formed, a plurality of inserts can be inserted at the same time, and a plurality of plugs can be simultaneously taken out .

According to another embodiment of the present invention, there is provided a plug injection mold having a plurality of insert insertion portions, wherein a plurality of plugs inserted with the insert can be simultaneously injection-molded.

In the plug injection mold according to another embodiment of the present invention, the insert insertion portion includes a moving pin inserted into the insert fixing plate to move the insert fixing plate, And a moving pin fitting groove formed to be inserted into the moving pin fitting groove.

According to another aspect of the present invention, there is provided a plug injection mold, wherein the insert insertion part is configured such that when the insert insertion part is separated from the lower mold, the insert is inserted into the insert insertion part, And the plug are separated from each other, thereby making it easy to take out the plug inserted with the insert.

According to still another aspect of the present invention, there is provided a plug injection mold having an insert core, the core core having an inner core fixed to the lower mold and having the same outer shape as the inner shape of the plug body; And an outer core formed on both sides of the inner core and slidable along an upper surface of the lower mold and having an inner surface identical to an outer shape of the plug body, And is opened to both sides.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention relates to an injection mold comprising: an upper mold constituting an upper side of an injection mold; A lower mold having a core portion which is shaped and shaped with the upper mold and which is seated inside; And the insert part is inserted into the insert insertion part, and the other end of the insert is inserted into the cavity of the cavity, The molten resin is injected into the cavity while the insert insert and the core are in contact with each other so that the insert can be easily inserted and the waiting time for insert insertion can be shortened, It is possible to improve productivity.

In the present invention, when the insert inserting portion is separated from the lower mold, the insert inserting portion and the plug are separated from each other while the insert is inserted into the insert inserting portion, thereby making it easy to take out the plug using the insert inserting portion.

The present invention is characterized in that it includes an insert insertion portion including an insert fixing plate into which an insert is inserted and fixed, and the insert fixing plate includes an insert insertion hole formed in a lower surface of the insert fixing plate to insert the insert, The insertion waiting time for inserting inserts can be reduced and the plugs inserted with the inserts can be removed together with the inserts inserted into the insert fixing plates even when the inserts are released.

The present invention includes an insert fixing plate including a replacement plate that is interchangeably inserted into a lower surface of an insert fixing plate, and an insert insert hole is deformed by a repetitive injection process so that an insert insert hole is formed in the replacement plate, Or when the resin leaks due to abrasion at a portion abutting against the core portion, it is possible to replace only the replacement plate so that the quality of the injected plug can be easily maintained and the maintenance and management cost can be saved.

The present invention is characterized in that it comprises a receiving groove formed by being inserted into the upper outer side of the insert inserting hole and an inserting hole including a holding means fixed to the receiving groove to hold an insert inserted into the insert inserting hole, The insert inserted into the insert insertion hole can be fixed without being moved, so that the insert can be fixed at the correct position without moving even when the resin is injected, and the plug inserted with the insert can be separated from the inserted insert insertion hole So that the plug can be easily taken out and the working time can be shortened.

The present invention is characterized in that a plurality of inserts are inserted into a core in a state in which a plurality of inserts are inserted into one insert fixing plate, and when one insert fixing plate is detached from the insert, So that the working time can be shortened and the productivity can be improved.

The present invention has an effect of improving the productivity of a plug by including a plurality of insert inserts so that a plurality of plugs inserted with inserts can be injection-molded at the same time.

The present invention includes an insert inserting portion including a moving pin inserted into an insert fixing plate to move an insert fixing plate, and the insert fixing plate includes a movable pin fitting groove formed to be embedded in both lower side surfaces, When the plug is taken out, the movable pin is raised and the insert fixing plate into which the plug is inserted is also raised, thereby making it easy to take out the plug.

The present invention relates to an inner core which is fixed to a lower mold and has the same outer shape as the inner shape of the plug; And a core portion which is formed on both sides of the inner core and slides along the upper surface of the lower mold and has an outer surface having the same inner surface as the outer shape of the plug, So that the inserted plug can be easily taken out.

1 is a perspective view of a plug inserted with an insert,
Fig. 2 is an exploded perspective view of Fig.
3 is a cross-sectional view taken along line AA in Fig. 1
4 is a perspective view of an injection mold according to an embodiment of the present invention.
Fig. 5 is an exploded perspective view of Fig.
FIG. 6 is a bottom perspective view of an insert fixing plate according to an embodiment of the present invention. FIG.
7 is a bottom perspective view of an insert fixing plate according to another embodiment of the present invention.
Fig. 8 is a perspective view showing a state in which the insert insert portion of Fig. 4 is mounted on the lower mold;
9 is a sectional view taken along line BB in Fig. 8
Fig. 10 is a perspective view of the upper mold of Fig.
Fig. 11 is an exploded perspective view of the lower mold of Fig.
12 is an exploded perspective view of the core portion of Fig.
FIGS. 13 to 17 are views for illustrating the installation process of the insert inserting portion and the take-out process of the plug according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a plug injection mold according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements, rather than excluding other elements, unless specifically stated otherwise.

1 to 3, a plug injection mold according to an embodiment of the present invention is a mold for injection molding a plug 100 having a metal insert 103 inserted thereinto, One side 101a of the body 101 is formed so as to be inserted into a power outlet (not shown), and the other side 101b of the plug body 101 is formed with an empty space therein, So that it can be connected to the insert 103. One end 103a of the insert 103 is inserted to one side 101a of the plug body so as to protrude outward and inserted into a power outlet like one side 101a of the plug body. One end (103a) of the insert is formed to have a larger diameter than one side (101a) of the plug body so that it can be supported without being inserted into the plug body (101), and is generally formed into a cylindrical shape . The other end 103b of the insert 103 is formed in a thin fin shape and is inserted into the plug body 101. Molten plastic resin is injected around the other end 103b to harden the plug body 101, So that electric wires or the like coming out of the power cord can be connected.

In order to manufacture a plug having such an insert having such a shape, it has heretofore been required to inject the molten resin after manually inserting the insert 103 into the plug-shaped cavity as described in the related art, It takes time, productivity is decreased, and the insert 103 can not be inserted in the correct position. Therefore, the present invention proposes an injection mold for facilitating the insertion of the insert into the plug, and a detailed description thereof will be given below.

Referring to FIGS. 4 to 17, a plug injection mold which can easily insert inserts according to an embodiment of the present invention will be described. The injection mold includes an upper mold 4 constituting an upper side of an injection mold; A lower mold 5 having a core portion 51 which is shaped and formed with the upper mold 4 and which is seated inside; And an insert insertion portion 3 inserted and supported by the insert 103 inserted into the plug body 101. The core portion 51 forms the cavity c of the plug body 101 ; The insert insert 3 is inserted into the insert insert 3 and one end 103b of the insert is inserted into the cavity c, 5 so that the molten resin is injected into the cavity c while the insert portion 3 and the core portion 51 are in contact with each other so that the inserted plug 100 is injected .

4 to 5, the injection mold includes an upper plate 1 formed on the upper side of the upper mold 5 and through which a water column inlet (not shown), a cooling water injection pipe (not shown) And a lower plate 2 formed on the lower side of the lower mold 6 to form the lowermost portion of the injection mold. However, the lower plate 2 does not include special technical features in comparison with the prior art, It is omitted.

The injection mold includes an upper mold 4 attached to the lower side of the upper plate 1 and a lower mold 5 and an insert insertion portion 3 attached to the upper side of the lower plate 2, The description of the insert inserting portion 3 will be given before the explanation of the insert 5 and the lower mold 6. [

As shown in FIGS. 4 to 9, the insert insertion portion 3 is configured to facilitate the insertion of the insert 103. The insert insertion portion 3 includes an insert fixing plate 31 into which the insert 103 is inserted and fixed, And a moving pin 33 inserted into the insert fixing plate 31 to move the insert fixing plate 31. When the insert inserting portion 3 is detached from the lower mold 5, the insert inserting portion 3 is inserted into the insert inserting portion 3 while the insert 103 is inserted into the insert inserting portion 3, 3 and the plug 100 are separated from each other, thereby making it easy to take out the inserted plug 100. A plurality of the insert inserts 3 can be formed, thereby increasing the productivity of the plug 100 which is injection-molded at the same time as the insert inserts 3. When a plurality of insert inserts 3 are formed, a plurality of insert portions 47 of the upper mold 4 and a core portion 51 and a seat portion 52 of the lower mold 5 are formed.

The insert fixing plate 31 can be easily inserted into the core portion 51 by inserting and fixing the insert 103 and also can be inserted into the core portion 51 The insert fixing plate 31 is gripped and can be easily taken out, thereby shortening the working time and improving the productivity. In addition, by forming the insert insert 3 in the form of an insert fixing plate 31, it is possible to increase the number of the insert fixture plates 31 to easily form a plurality of insert inserts 3 do. In other words, if only a mold capable of receiving a plurality of core portions 51 is manufactured, by increasing the number of insert fixing plates 31 or by increasing the number of insert insertion holes 311 to be described later, It is possible to expand the mold that can be manufactured. As shown in FIG. 6, the insert fixing plate 31 has a plate shape having a predetermined thickness and is formed on the lower surface of the insert fixing plate 31 to insert insert holes 311 And a moving pin fitting groove 313 which is formed to be embedded in both lower surfaces of the insert fixing plate 31 and allows the moving pin 33 to be fitted therein.

As shown in FIG. 6, the insert insert hole 311 is formed on the lower surface of the insert fixing plate 31 so that the insert 103 can be inserted. The insert insert hole 311 is formed along the lower surface of the insert insert plate 31 A plurality of inserts 103 can be inserted into the core portion 51 at the same time with one insert fixing plate 31. When one insert fixing plate 31 is detached from the core portion 51, So that the inserted plug 100 can be taken out. The insert insert hole 311 has a receiving groove 311a embedded in the upper portion of the insert insert hole 311 and an insert inserted into the insert insert hole 311, 103).

The receiving groove 311a provides a space in which the holding means 311b can be seated and is inserted into the insert hole 311 from the upper side to the outside of the insert hole 311 do.

The gripping means 311b is seated and fixed in the receiving groove 311a and various means capable of gripping the insert 103 can be applied. However, the plug 100, in which the one end 103a of the insert is inserted, Is formed of an O-ring because it must be easily separated from the insert fixing plate (31). It is preferable that the gripping means 311b is formed so as to protrude to the inside of the insert insertion hole 311 and that the insert 103 is engaged with the protruding gripping means 311b, . Therefore, not only can the insert 103 be stably fixed to the insert insertion hole 311 and can be fixed without being pushed even when plastic resin is injected, (100) are also detached, so that the time for taking out can be shortened.

The movable pin fitting grooves 313 are formed on the lower surfaces of both sides of the insert fixing plate 31 so that the movable pin fitting grooves 313 can be inserted to a certain depth. Therefore, when the moving pin 33 is lifted, the moving pin 33 pushes the insert fixing plate 31 so that the insert fixing plate 31 is raised. The moving pin 33 will be described later in detail.

According to another embodiment of the insert fixing plate 31, the insert fixing plate 31 includes a replacement plate 315 which is inserted into the lower surface of the insert fixing plate 31 so as to be replaceable as shown in FIG. 7 , And insert insert holes (315a) may be formed in the replacement plate (315).

The replacement plate 315 is inserted into the insert fixing plate 31 so as to be inserted into the insert fixing plate 31 at a predetermined depth and is formed with a plurality of coupling holes 315b by fastening means such as screws Lt; / RTI > Further, the replacement plate 315 is formed to be detachable to the insert fixing plate 31 by releasing the fastening means (not shown). Therefore, if the resin is leaked due to wear of a portion where the insert insert hole 315a is deformed and the insert 103 is not fixed or abuts on the core portion 51 by the repetitive injection process, It is possible to easily maintain the quality of the injected plug and to save maintenance and management costs. The insert insertion hole 315a formed in the replacement plate 315 has the same function as the insert insertion hole 311 formed in the insert fixing plate 31 according to the embodiment of the present invention, The insert insert hole 315a formed in the insert hole 315a-1 also includes the insert groove 315a-1 and the gripping means 315a-2 so as to grasp the insert 103 to be inserted. Therefore, the description of the insert insertion hole 315a, the receiving groove 315a-1, and the gripping means 315a-2 is the same as described above, and the following description is omitted.

The moving pin 33 is installed to pass through the lower mold 5 and is moved up and down by an elevating device (not shown) included in the lower plate 2. As described above, the moving pin 33 is inserted into the moving pin fitting groove 313 of the insert fixing plate 31. When the pin is lifted up and taken out, the moving pin 33 is lowered again to fit the insert fixing plate 31 do. The insert pin plate 31 is lifted by the moving pin 33 at the time of taking out, so that the entire plug 100 in which the insert 103 is inserted is lifted up and easier to take out.

4 to 5 and 10, the upper mold 4 is installed on the lower side of the upper plate 1 and includes a guide pin 41, an angle pin 43, a resin injection part 45 And a depression 47 are formed. The upper mold 4 may be installed to move, but it is configured to be fixed in the present embodiment, and the lower mold 5 is vertically moved to repeat the upper mold 4, the mold and the mold. Further, the upper mold 4 and the lower mold 5 may be formed horizontally, and may be configured to move in parallel with the ground, so that the mold and the mold may be repeated. However, in the description of the present invention, for convenience of explanation, it is assumed that the upper mold 4 and the lower mold 5 are vertically formed.

The guide pin 41 is vertically protruded on the lower side of the upper mold 4. The guide pin 41 is inserted into a guide pin insertion hole 56 of a lower mold 5 to be described later, Guide the movement.

The angle pin 43 is formed on the lower side of the upper mold 4 and formed to be inclined outward so as to be inserted into the angle pin guide hole 513 of the outer core 513, The outer core 513 is pushed outward so that the outer core 513 is opened to both sides.

The resin injection unit 45 is formed on the upper side of the recessed portion 47 and is connected to the upper end of the upper plate 1 through a drainage inlet (not shown) so that the molten plastic resin is injected into the cavity c. do.

When the upper die 4 and the lower die 5 are in close contact with each other, the insert fixing plate 31 and the core portion 5 are pressed against each other at the bottom of the upper die 4, (51) and the like can be inserted.

4 to 5 and 11 to 12, the lower mold 5 is provided on the upper side of the lower plate 2 and includes a core portion 51, a seating portion 52, And the like are formed. The lower mold 5 includes an angle pin insertion groove 54, a moving pin through hole 55, and a guide pin insertion hole 56.

11 to 12, the core unit 51 includes an inner core 511 fixed to the lower mold 5 and having the same outer shape as the inner shape of the plug body 101; And an outer core (513) formed on both sides of the inner core (511) and slid along the upper surface of the lower mold (5) and having the same inner surface as the outer shape of the plug body (101) And the outer core 513 is spread on both sides of the mold of the upper mold 4 and the lower mold 5. The core portion 51 forms a plug-shaped cavity c. After the molten plastic resin is injected into the cavity c and cooled, a plastic plug is produced. At this time, as described above, by inserting the metal insert 103 into the cavity c and injecting the resin, the insert 103 is inserted into the body 101 of the plug, So that the plug 100 is manufactured while the insert 103 is fixed.

The inner core 511 is inserted and fixed in a seating part 52 of a lower mold 5 to be described later and is formed to have the same outer shape as the inner shape of the plug body 101. Therefore, the inner core 511 has the inner space of the plug 100, and the plastic resin solidified along the outer surface of the inner core 511 forms the inner surface of the plug 100. An insert groove 511a is formed on the upper surface of the inner core 511 so that the insert 103 can be inserted. The insertion groove 511a has a shape embedded in the upper surface of the inner core 511 at a certain depth so that the insert 103 can protrude into the inner space of the plug 100. [ When a plurality of insert insertion holes 311 are formed as described above, a plurality of the inner cores 511 may be formed so that a plurality of the plugs 100 can be injection-molded at the same time. Further, when a plurality of insert inserts 3 are formed, a plurality of inner cores 511 may be formed.

The outer core 513 is divided into two sides with respect to the inner core 511 and includes a cavity forming portion 513a which is embedded in the same shape as the outer shape of the plug body 101 along the inner side . Therefore, when the outer cores 513 divided into the two sides are in close contact with each other, the inner core has the same inner space as the outer shape of the plug body 101, the inner core 511 is positioned at the center thereof, The plug 100 is manufactured by injecting molten resin into the internal space formed by the core 513 and the inner core 511, that is, the cavity c. The insert 103 is inserted into the upper side of the outer core 513 so that plastic resin flows around the insert 103 to harden the plug 103, 100) can be produced. As described above, conventionally, the insert 103 is inserted manually by hand. In the present embodiment, however, the insert 103 is inserted using the insert insert 3 as described above, Can be improved. When a plurality of the insert inserts 3 are formed, a plurality of the outer cores 513 are also formed so that a plurality of the plugs 100 inserted with the inserts 103 can be injection-molded at the same time, When a plurality of the insert insertion holes 311 are formed, a plurality of the cavity forming portions 513a are formed so that a plurality of the plugs 100 can be simultaneously injection-molded.

Further, the outer core 513 is seated on the upper portion of the lower mold 5 and slides to the divided sides. The outer core 513 is seated on the sliding part 53 of the lower mold 5 to be described later and slides so that the divided outer core 513 is closely contacted to form a cavity c, After the molten resin is injected into the plug 100, the outer core 513, which has been in close contact with the plug 100, is slid to both sides so that the plug 100 can be taken out. At this time, inclined angle pin guide holes 513b are formed on both sides of the outer core 513 so that when the upper mold 4 and the lower mold 5 are opened up 513) can be automatically opened.

The angle pin guide hole 513b penetrates the outer core 513 so as to be inclined outward and the angle pin 43 of the upper mold 4 which is also inclined outward is inserted into the angle pin guide hole 513b do. When the upper mold 4 and the lower mold 5 are closed, the angle pin 43 is inserted into the angle pin guide hole 513b and the upper mold 4 and the lower mold 5 are opened. The angle pin 43 is disengaged from the angle pin guide hole 513b and the inner side surface of the angle pin guide hole 513b is pushed outward so that the outer core 513 is opened to both sides .

The outer core 513 may include a bottom plate 513c inserted into a sliding portion 53 of a lower mold 5 to be described later so as to slide the upper portion of the bottom plate 513c, It is preferable that the outer core 513c is formed of a heat treatment plate so as not to be abraded by friction with the outer core 513. [

The seating part 52 is formed at a predetermined depth in the upper side of the lower mold 5 and the inner core 511 of the core part 51 is inserted and seated. When a plurality of insert insertion portions 3 including the insert fixing plate 31 are formed, a plurality of the insert insertion portions 3 are formed so that a plurality of inner cores 511 can be inserted and seated .

The sliding portion 53 is formed at a depth sufficient to insert a thin plate on both sides of the seating portion 52. The bottom plate 513c is inserted into the sliding portion 53, So that the outer core 513 can slide on the top of the bottom plate 513c.

The angle pin insertion grooves 54 are formed on both sides of the lower mold 5 so that the angle pins 43 passing through the angle pin guide holes 513b of the outer core 513 can be inserted.

The moving pin penetrating hole 55 is a hole through which the moving pin 33 of the insert inserting portion 3 passes and the moving pin 33 vertically moves through the moving pin through hole 55 .

The guide pin insertion hole 56 is a hole into which the guide pin 41 of the upper mold 4 is inserted and the guide pin 41 is inserted so that the upper mold 4 and the lower mold 5 are accurately So that it can be shaped at the position.

The operation of the plug injection mold, which facilitates insert insertion according to an embodiment of the present invention, will be described with reference to FIGS. 13 to 17. FIG. 13 is a view showing the step of starting the injection molding, wherein the outer core 513 is opened at both sides. At this time, the insert 103 is inserted into the insert fixing plate 31 in advance. In this state, as shown in FIG. 14, the moving pin 33 is inserted into the moving pin fitting groove 313 of the insert fixing plate 31 to fix the insert fixing plate 31, The other end 103b of the inner core 511 is inserted into the insertion groove 511a of the inner core 511. [ 15, when the lower mold 5 is raised and abuts on the upper mold 4, the upper mold 4 and the lower mold 5 are pressed against each other at the inner side of the upper mold 4. At this time, The pin 43 is inserted into the angle pin guide hole 513b of the outer core and the outer core 513 divided by the angle pin 43 and the angle pin guide hole 513b, So that they are in contact with each other. When the outer core 513 divided into two sides contact each other to form a cavity c, molten plastic resin is injected into the cavity c to cool the plug 100 in which the insert 103 is inserted Injection molding. 16, when the lower mold 5 is separated from the upper mold 4 and descends downward, the angle pin 43 inserted in the angle pin guide hole 513b is released, The angle pin 43 pushes the angle pin guide hole 513b outward so that the outer core 513 is slidably opened. Then, the moving pin (33) rises and pushes the insert fixing plate (31) upward. The plug 100 in which the insert 103 is inserted is lifted together with the insert fixing plate 31 to come up to a position that the operator can grasp. 17 is a process of separating the insert fixing plate 31 from the mold and taking out the plug 100 with the inserted insert. When the insert fixing plate 31 is removed as described above, the insert 103 is inserted into the insert insertion hole 311, the entire plug 100 comes out. Therefore, when a plurality of insert insertion holes 311 are formed, it is possible to simultaneously separate the plugs 100 inserted with a plurality of inserts by separating one insert fixing plate 31, thereby shortening the working time , Thereby improving the productivity. Then, when the plug 100 is pulled out from the insert insertion hole 311, the manufacture of the plug 100 in which the insert is inserted is completed, and the insert fixing plate 31 is removed from the mold, The insert 103 is inserted into the insertion hole 31 to wait for the next injection operation.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

100: Plug
101: Body 101a: One side of the body 101b: The other side of the body
103: insert 103a: one end of the insert 103b: other end of the insert
1: Top plate
2:
3: insert insert portion
31: Insert plate
311: insert insert hole 311a: receiving groove 311b: gripping means
313: Move pin-fitting groove
315: Replacement plate
315a: insert insert hole 315a-1: receiving groove 315a-2:
315b: coupling ball
33: Moving pin
4: upper mold
41: guide pin 43: angle pin 45: resin injection part
47:
5: Lower mold
51: core part
511: inner core 511a: insertion groove
513: outer core
513a: cavity forming portion 513b: angle pin guide hole 513c:
52: seat part 53: sliding part 54: angle pin insertion groove
55: moving pin through hole 56: guide pin insertion hole
c: cavity

Claims (9)

An upper mold constituting the upper side of the injection mold; A lower mold including a core portion forming a cavity of a plug body shape and formed with the upper mold and the mold; And an insert insertion portion into which an insert inserted into the body of the plug is inserted and supported,
And an insert fixing plate formed on a lower surface of the insert fixing plate to insert an insert, wherein the insert inserting hole includes an insert inserting hole for inserting the insert inserting hole, And a gripping means for gripping the insert inserted in the insert insertion hole and fixed to the receiving groove,
The insert inserting part is inserted and fixed in the insert inserting hole and the other end of the insert is inserted into the cavity so that the inserting inserting part and the core part are in contact with each other, So that the plug inserted with the insert is injected by allowing the resin to be injected. delete The apparatus according to claim 1, wherein the insert fixing plate
And an insert insert hole is formed in the insert plate including a replaceable plate that is inserted to be replaceable on a lower surface of the insert fixing plate. delete 4. The method according to any one of claims 1 to 3,
Wherein a plurality of insert insert holes are formed so that a plurality of inserts can be inserted at the same time and a plurality of plugs can be simultaneously taken out. 6. The method of claim 5,
Wherein a plurality of the insert insertion portions are formed so that a plurality of plugs into which the insert is inserted can be injection-molded at the same time. The apparatus of claim 1, wherein the insert insert
And a moving pin inserted into the insert fixing plate to move the insert fixing plate,
Wherein the insert fixing plate includes a movable pin fitting groove formed to be embedded in the lower surfaces of both sides so that the movable pin can be inserted. The apparatus of claim 1, wherein the insert insert
Wherein when the insert inserting portion is separated from the lower mold, the insert inserting portion and the plug are separated from each other in a state where the insert is inserted into the insert inserting portion, thereby making it easy to take out the plug inserted with the insert. Easy to insert plug injection mold. The method according to any one of claims 1, 3, and 7 to 8,
An inner core fixed to the lower mold and having the same outer shape as the inner shape of the plug body; And an outer core formed on both sides of the inner core and slidable along an upper surface of the lower mold and having the same inner surface as the outer shape of the plug body,
And the outer core extends to both sides of the mold starting of the upper mold and the lower mold.
KR1020130140487A 2013-11-19 2013-11-19 Injection Mold for Plug of Easily Putting in Insert KR101526894B1 (en)

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KR101832828B1 (en) 2017-08-23 2018-02-28 통일전자공업(주) Insert module for plug mold

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Publication number Priority date Publication date Assignee Title
KR101955600B1 (en) * 2017-08-23 2019-03-08 통일전자공업(주) Insert mold for plug
CN110027164A (en) * 2018-01-12 2019-07-19 广州光宝移动电子部件有限公司 Combined type injection-molded product manufacturing method and products thereof
CN112092304A (en) * 2020-09-28 2020-12-18 广东拓斯达科技股份有限公司 Injection mold and charging plug production equipment

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JP2001237022A (en) * 2000-02-25 2001-08-31 Kitani Denki Kk Power supply plug and its manufacturing method
KR20040025570A (en) * 2002-09-17 2004-03-24 교산 덴끼 가부시키가이샤 Insert molded product and molding dies for manufacturing the same
KR20080003601U (en) * 2007-02-23 2008-08-27 이종오 Jig for inserting the insert for injection mold
KR20110034328A (en) * 2009-09-28 2011-04-05 홍정욱 A mold for making of rubber brush

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Publication number Priority date Publication date Assignee Title
JP2001237022A (en) * 2000-02-25 2001-08-31 Kitani Denki Kk Power supply plug and its manufacturing method
KR20040025570A (en) * 2002-09-17 2004-03-24 교산 덴끼 가부시키가이샤 Insert molded product and molding dies for manufacturing the same
KR20080003601U (en) * 2007-02-23 2008-08-27 이종오 Jig for inserting the insert for injection mold
KR20110034328A (en) * 2009-09-28 2011-04-05 홍정욱 A mold for making of rubber brush

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101832828B1 (en) 2017-08-23 2018-02-28 통일전자공업(주) Insert module for plug mold

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