KR20190021615A - Insert mold for plug - Google Patents

Abstract

The present invention relates to an insert mold for a plug having a gear type semi-automatic rotation part. More specifically, the present invention relates to an insert mold for a plug having a gear type semi-automatic rotation part, which facilitates withdrawal of the plug after the insertion and molding of an insert of a plug terminal before molding so as to improve workability and productivity, and also prevents an operator from being injured by a high-temperature mold. To this end, the insert mold comprises: a mold having a cavity in which a plug body is formed and a mounting part provided on one side of the cavity; and a gear type semi-automatic rotation part in which the insert jig rotated by an operation unit is coupled to a core block. Therefore, the opening direction of an insert insertion part is reversed for conversion.

Description

[0001] INSERT MOLD FOR PLUG [0002]

The present invention relates to an insert mold for a plug having a gear type semiautomatic rotary part, and more particularly, to a mold for inserting an insert of a plug terminal before molding and taking out a plug after molding, thereby improving workability and productivity, A mold having a cavity in which a plug body is formed and a mounting part provided on a side of the cavity, and a gear type semi-automatic rotation part coupled to the core block, the insert jig rotating through operation means, Type semi-automatic rotary part capable of reversing the direction of opening of the insert insertion part and reversing the opening direction of the insert insertion part.

The injection mold is injection molding a plastic synthetic resin product, and a hollow space (hereinafter referred to as a cavity) corresponding to the shape of the product to be molded is formed in the mold, the molten high temperature synthetic resin is injected into the cavity, The product having an outer appearance corresponding to the shape of the cavity is molded.

In this case, insert injection is referred to as the insertion of a synthetic resin and an insert into a cavity of a mold after injection of a separate component (hereinafter referred to as an insert) different from the synthetic resin to be injection-molded.

For example, a power plug inserted into a power outlet and used as a means for applying power is manufactured by insert injection using an injection mold. As shown in FIG. 1A, a plug P is made of a metal material A part of the terminal 2 protrudes into the internal space of the plug body 1 and is electrically connected to the electric part such as the electric wire 3 and the like, Respectively.

An insert injection mold for manufacturing a plug with such a terminal inserted therein is composed of an upper mold (hereinafter referred to as an upper mold) constituting an upper portion of a mold and a lower mold provided below the first mold and constituting a lower portion of the mold The upper and lower plates 100 and 100 have a cavity 102 corresponding to the shape of the plug body 1, as shown in FIG. 1B, When the operator molds the injection mold after inserting the terminals 2 manually into the core portion 101 by the operator in the opened state, the resin is injected into the cavity 102, The body 1 of the inserted plug is injection-molded.

The injection mold for plug M has a structure in which the cavity 102 of the injection mold is connected to the body 2 of the plug by the projecting structure of the terminal 2 and the connection structure of the plug body 2 and the electric wire 3 An insert insert core C having a side lying down and having a terminal inserted into one side of the cavity 2 is inserted so that the terminal 2 is inserted into the insert insert core C in one horizontal direction, The insert 1 is pulled out from the insert core C in the other horizontal direction and taken out.

The insert injection using the injection mold for plugs has a problem that the waiting time for inserting the terminals is prolonged to deteriorate the productivity and the insertion of the terminals and the take-out of the plugs are made in the horizontal direction and the workability is deteriorated. There is a great risk of injury such as burns due to the high temperature of the mold, and it is difficult to take out the product on the mold structure, so that there is a great risk of occurrence of defective products such as breakage of terminals when taken out.

For reference, as a related art related thereto, there are the registered patent No. 10-1526894 and the patent application No. 10-2004-0025570.

Accordingly, it is an object of the present invention to provide a socket for a plug socket, which is capable of improving the workability by inserting an insert of a terminal and taking out a formed plug vertically and vertically, And an object of the present invention is to provide an insert mold for a plug having a gear type semiautomatic rotary part capable of reducing damage and defective products produced during takeout and improving productivity.

According to an aspect of the present invention, there is provided an insert mold for a plug having a gear type semi-

A mold having a cavity in which a plug body is formed, and a mounting portion provided on one side of the cavity; And

A core block coupled to the mounting portion,

An insert inserting portion into which a plug terminal is inserted; and an insert jig having a rotation shaft rotatably coupled to the core block such that the insert inserting portion faces the cavity,

And a gear type semiautomatic rotary part composed of a gear shaft engaged with the rotary shaft in the gear structure in the core block so as to rotate the insert jig and operating means composed of a handle rotating the gear shaft.

In the insert mold for a plug having the gear type semi-automatic rotation unit according to the present invention,

Wherein the mold has a plurality of cavities arranged in a row in the left-

Wherein the gear type semiautomatic rotary part includes a plurality of insert jigs corresponding to the respective cavities,

Wherein the gear shaft is embedded in a longitudinal direction of the core block and has a helical gear portion on an outer peripheral surface thereof,

The rotation shaft includes a driven gear portion coupled to the core block in a direction orthogonal to the gear shaft and meshing with the helical gear portion so as to be capable of switching the rotational direction.

Further, in the insert mold for a plug having the gear type semi-automatic rotation unit according to the present invention,

Wherein the mold is formed so that the mounting portion is open to one side or both sides to the left and right,

Wherein the core block includes an exposed portion exposed to the outside of the mold at the mounting portion,

And the handle is connected to the exposed portion.

Further, in the insert mold for a plug having the gear type semi-automatic rotation unit according to the present invention,

And the handle includes a drive gear portion coupled to the spiral gear portion so as to be rotatable in a coaxial direction with the rotation shaft at any one of the front and rear sides of the exposed portion and capable of switching the rotational direction.

According to the present invention, there is provided an insert mold for a plug having a gear type semi-

An insert jig having an insert inserting portion is rotatably coupled to the core block so as to introduce a gear type semi-automatic rotating portion for rotating the insert inserting portion by the operating means so as to upward align the insert inserting portion during the insert operation and the product take- It is possible to improve workability by shortening the waiting time required for inserting and taking out the product, as well as to improve the productivity, as well as to prevent the occurrence of injury such as an image due to the high temperature mold during the work, It is possible to improve the reliability of the product by reducing the defect rate that occurs when the product is taken out horizontally in the left and right direction.

Figure 1a is a photograph of a plug.
1B is a photograph of a conventional plug mold.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plug type insert mold having a semi-
3 is a perspective view of the main part according to the operating state of the present invention.
4 is an internal projection view for explaining operating means according to the invention;
5 is a view for explaining a safety lock lever according to the present invention.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

 In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

In describing the insert mold for a plug having the gear type semiautomatic rotary part according to the present invention, for the sake of convenience, the rigid approximate direction reference will be described with reference to FIGS. 2 and 3. The direction in which the handle 31 protrudes The direction in which the gravity acts is referred to as the downward direction and the leftward and rightward direction as it is in the direction in which the direction in which the gravity acts is defined as the forward direction and the direction in which the gravity acts. Describe the direction.

Hereinafter, an insert mold for a plug having a gear type semiautomatic rotation unit according to the present invention will be described with reference to the accompanying drawings.

The present invention relates to an insert mold for a plug having a gear type semiautomatic rotation part for injecting inserts of the plug shown in FIG. 1A. As shown in FIGS. 2 to 5, And a gear type semiautomatic rotary part I composed of a core block 10, an insert jig 20, and an actuating means 30.

The mold M is a known injection mold. In the figure, a cavity 102 having a shape corresponding to the plug body 1 is formed in the core portion 101, and on one side (rear in the drawing) of the cavity 102, And a lower plate 100 provided with a lower plate 103 is exemplarily shown.

Although not shown in the drawings, the mold M of the present invention further includes an upper plate having molds corresponding to the lower plate 100 as described above.

At least one of the cavities 102 is provided in the core 101. It is preferable that two or more cavities 102 are provided for improving productivity.

A plurality of the cavities 102 are arranged in a line on the left and right sides of the mold M so that insert operation and product takeout of each cavity 102 can be performed using the gear type semi-

The mounting portion 103 is formed in a groove shape transverse to the left and right of the lower plate 100 in correspondence with the cavities 102 arranged in a line and is formed so as to open to either side or both sides of the mold (lower plate 100) .

Next, the gear type semi-automatic rotation unit I is used to rotate the insert insertion unit 21 to facilitate insertion of the terminal 2 and extraction of the plug body 1. The core block 10, the insert jig 20 And operating means 30, as shown in Fig.

The core block 10 is coupled to the mounting portion 103 and is a bar type member having a predetermined length corresponding to the cavities 102 of the laterally arranged lower plate 100. In particular, 10 are formed to be longer than the mounting portion 103 so that the left and right ends of the core block 10 or both side ends thereof are exposed from the mounting portion 103 to the outside of the mold 100 .

The core block 10 is provided with a mounting hole (not shown) through which the gear shaft 32 of the actuating means 30 is mounted in the longitudinal direction, (Not shown) communicating with the mounting hole are provided on a certain surface (the front surface in the drawing) spaced apart from each other by a predetermined distance so that the rotation shaft 22 of the insert jig 20 and the drive shaft 31A are inserted and joined.

The insert jig 20 includes an insert insertion portion 21 into which the plug terminal 2 is inserted and an insert insertion portion 21 into which the insert insertion portion 21 is directed toward the cavity 102 And a rotary shaft 22 rotatably coupled on one of the front and rear surfaces of the core block 10 (the front surface in the drawing).

In the drawings of the present specification, the insert insertion portion 21 provided in the lower plate 100 is directed upward in the operation standby state based on the vertical type plug mold M which is opened and closed in the vertical direction. However, In the case of a horizontal type plug mold in which the opening and closing operation is performed in the front and rear horizontal directions, the insert inserting portion 21 provided in the lower plate in the standby state is directed to the front side. That is, in the present specification, the upper side toward which the insert insert 21 faces means a direction in which a moving plate (not shown, upper plate) for opening and closing operations is disposed with respect to a fixed plate (lower plate 100) do.

The rotary shaft 22 is rotatably coupled to the core block 10 by having a driven gear portion 22a at one end thereof and the driven gear portion 22a receives rotational force from the gear shaft 32 The insert jig 20 is rotated in both directions.

The rotation shaft 22 is coupled to the core block 10 in a direction orthogonal to the gear shaft 32 and is engaged with the helical gear portion 32a of the gear shaft 32 And a driven gear portion 22a.

The insert jig 20 rotates so that the insert insert 21 is turned upward when the plug body 1 is taken out and the insert insert 21 is inserted into the cavity (102) so as to improve workability and productivity.

The semi-automatic rotation unit I of the present invention includes a plurality of the insert jigs 20 corresponding to the respective cavities 102. The insert jigs 20 are respectively provided in four cavities 102, Is shown as an exemplary embodiment.

The operation means 30 allows the operator to semi-automatically rotate the insert jig 20 and includes a gear shaft 32 meshed with the rotary shaft 22 in the gear block structure of the core block 10, , And a handle (31) for rotating the gear shaft (32).

At this time, the rotation of the gear shaft 32 through the handle 31 can be realized in various ways (for example, a method using a spur gear meshed with each other so as to rotate two or more axes in the same direction, , A worm gear system for interlocking rotations of the axes intersecting in the orthogonal direction, a rack gear system in which one of the two axes intersecting in the orthogonal direction is rotated and one is rotated in the forward and backward directions)

The present invention introduces a gear shaft 32 having a spiral gear portion 32a formed on the outer circumferential surface thereof so that the insert jig 20 can be rotated simultaneously while simplifying the structure of the gear type semi-

More specifically, the handle 31 is rotatably coupled to the exposed portion 11 by having a drive gear portion 31a at one end (rear end in the drawing) of the handle 31. The drive gear portion 31a And is engaged with the spiral gear portion 32a so that the rotation direction can be switched so that the rotational force of the handle 31 is transmitted to the gear shaft 32. [

Particularly, the handle 31 is provided on one of the front and rear surfaces of the exposed portion 11 in the same direction to which the insert jig 20 is coupled, and is rotatably coupled to the rotary shaft 22 in a coaxial direction. So that the operator can intuitively rotate the handle 31 without considering the rotational direction of the insert jig 20 when the operator uses the handle 31. The handle 31 is provided so as to face the front of the operator So that workability can be improved.

That is, the handle 31 may be connected to various gears and / or shafts so as to rotate the gear shaft 32 by connecting the handle 31 in the longitudinal direction of the gear shaft 32, Is turned to the front side of the worker so as to make the operation more convenient.

The gear shaft 32 is built in the longitudinal direction of the core block 10 to transmit the rotation force of the handle 31 to the rotation shaft 22. The gear shaft 32 has a helical gear portion 32a on the outer circumferential surface, .

The gear shaft 32 is engaged with the drive gear portion 31a at its outer end and the driven gear portion 22a at its inner end to rotate together with the handle 31 and the rotary shaft 22 .

To this end, a drive gear portion 31a and a driven gear portion 22a, which are respectively engaged with the spiral gear portion 32a, are provided at one end of the drive shaft 31A and the rotary shaft 22, respectively.

In the drawing, the curved helical gear as the driving gear portion 31a and the curved bevel gear as the driven gear portion 22a are representatively shown. However, the two bevel gears interlocked with each other, A gear engagement structure is also possible.

According to the present invention having such a configuration, the terminal 2 can be easily inserted into the insert inserting portion 21 in a state where the insert inserting portion 21 faces upward, and when the worker before the mold closing operation rotates the handle 31 in one direction The rotational force of the handle 31 is transmitted to the drive gear portion 31a, the gear shaft 32 and the driven gear portion 22a so that the insert inserting portion 21 is reversed while rotating toward the side of the cavity 102 When the operator rotates the handle 31 in the other direction in the open state after the molding is completed, the rotational force of the handle 31 is transmitted to the insert jig 20, The insertion portion 21 is reversed to the original position and is directed upward, so that the plug completed in the insert inserting portion 21 can be easily separated from the upper side and taken out. As a result, Of course, It is possible to reduce the defective rate such as bowing of the ruler 2, and it is possible to prevent the occurrence of an injury such as a burn due to the operator's hand touching the hot lower plate 100 because the work is easy to take out.

The gear type semi-automatic rotation section I is detachably attached to the plug mold M so as to take out the product and inserting the insert 2 of the terminal 2 using one gear type semi-automatic rotation section I during molding, When the molding is completed, the prepared gear type semi-automatic rotation unit I may be replaced with the formed gear type semi-automatic rotation unit I, and when such a replacement type gear type semi-automatic rotation unit I is introduced, It is possible to automate plug injection molding with a simple structure.

In the present invention, since the handle 31 is exposed to the outside of the lower plate 100, when an external force is applied to the handle 31, the insert jig 20 is rotated in an unintended state by the operator, Breakage of the lower plate 100 may occur.

Accordingly, the present invention introduces the lock lever 33 for the handle 31 for safe stopping and smooth rotation of the handle 31 as shown in Fig.

The lock lever 33 has an outer end hinged to the side of the handle 31 and an inner end with a locking protrusion 33b so that the locking protrusion 33b swings about the hinge 33a Lt; / RTI &

The core block 10 is provided with a guide portion 12 into which the locking projection 33b is inserted to guide the stopping and rotation of the handle 31.

More specifically, the guide portion 12 is formed around the coupling portion of the handle 31 on the front surface of the core block 10,

A first engaging groove 12a formed at a standby position where the insert inserting portion 21 faces upward,

A second engaging groove 12b formed at a forming position where the insert inserting portion 21 faces the cavity 102,

And a rotation guide groove 12c for connecting the first engagement groove 12a and the second engagement groove 12b in the circumferential direction of the handle 31. [

The first and second latching grooves 12a and 12b are extended and connected in a direction intersecting the circumferential direction of the rotation guide groove 12c so as to protrude outward with respect to the rotation guide groove 12c,

The rotation guide groove 12c connects between the first and second engagement grooves 12a and 12b in a shape corresponding to the rotation path of the handle 31. [

Also, although not shown in the figure, the lock lever 33 includes an elastic body that elastically supports the latching protrusion 33b so as to swing outwardly.

The handle 31 can not be rotated unless the lock lever 33 is pushed and held in the direction of the handle 31 in a state in which the lock projection 33b is engaged with the first engagement groove 12a, (21) is stood so as to face a standby position in which the terminal (2) can be inserted and the product can be taken out,

When the worker grasps and presses the lock lever 33 to rotate the pre-mold releasing handle 31 in one direction, the engaging projection 33b moves away from the first engaging groove 12a and into the rotation guide groove 12c In this state, when the handle 31 is turned, the engaging projection 33b is rotated along the rotation guide groove 12c to rotate the insert inserting portion 21 to a molding position for injection molding of the product.

The lock lever 33 is swung outwardly by the elastic body (not shown) at the position of the second latching groove 12b when the lock lever 33 is released during the rotation of the handle 31, The latching protrusion 33b is inserted into the second latching groove 12b to stop the rotation of the handle 31 and prevent the handle 31 from rotating due to an external force so that the insert insertion portion 21 ) Is stopped at the forming position,

When the handle 31 is rotated in the other direction to take out the product after molding, the above operation is reversed.

By introducing such a lock lever 33, the present invention can prevent unintentional rotation of the handle 31 and safely stop the stopping of the handle 31. [

Although the first and second engagement grooves 12a and 12b are connected to the rotation guide groove 12c at a right angle of 90 degrees with respect to each other in the figure, the drive gear portion 31a, the helical gear portion 32a ), The gear ratio between the driven gear portions 22a, the pitch of each tooth, and the like.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art Such modifications, alterations, and substitutions are to be construed as within the scope of the present invention.

I: Gear type semi-automatic rotation part M: Plug mold
P: Plug
1: Plug body 2: Plug terminal
10: Core block 11: Exposed part
12: guide portion 12a, 12b:
12c: rotation guide groove
20: insert jig 21: insert insert part
21A: rotating shaft 21a: driven gear portion
30: operating means 31: handle
31A: drive shaft 31a: drive gear portion
32: gear shaft 32a: helical gear part
33: lock lever 33a: hinge portion
33b:
100: lower plate 101: core part
102: cavity 103:

Claims (4)

A mold having a cavity in which a plug body is formed, and a mounting portion provided on one side of the cavity; And
A core block coupled to the mounting portion,
An insert inserting portion into which a plug terminal is inserted; and an insert jig having a rotation shaft rotatably coupled to the core block such that the insert inserting portion faces the cavity,
And a gear type semiautomatic rotary part composed of a gear shaft engaged with the rotary shaft in the gear structure in the core block so as to rotate the insert jig and operating means composed of a handle rotating the gear shaft. Insert mold for plug.
The method according to claim 1,
Wherein the mold has a plurality of cavities arranged in a row in the left-
Wherein the gear type semiautomatic rotary part includes a plurality of insert jigs corresponding to the respective cavities,
Wherein the gear shaft is embedded in a longitudinal direction of the core block and has a helical gear portion on an outer peripheral surface thereof,
Wherein the rotation shaft includes a driven gear portion coupled to the core block in a direction orthogonal to the gear shaft and meshing with the helical gear portion so as to be capable of switching the rotational direction.
3. The method of claim 2,
Wherein the mold is formed so that the mounting portion is open to one side or both sides to the left and right,
Wherein the core block includes an exposed portion exposed to the outside of the mold at the mounting portion,
And the handle is connected to the exposed portion.
The method of claim 3,
Characterized in that the handle includes a drive gear portion which is rotatably coupled to the rotating shaft in either one of the front and rear sides of the exposed portion so as to be rotatable in a coaxial direction and is engaged with the spiral gear portion so as to be able to switch the rotational direction, .

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