KR20060054518A - A insert jig of injection molding product - Google Patents

Abstract

The present invention relates to an injection molded insert jig, and more particularly, by providing a pair of guide pins in a guide hole drilled outside of the main core, the insert nut can be easily inserted in the exact position of the insert even in an unskilled hole. In addition, the mold repair cost is greatly reduced by preventing damage to the main core in which the injection molding is carved, and a stopper is provided to prevent the insert pin from directly contacting the main core, thereby preventing the insert pin from being damaged. The present invention relates to an injection molding insert jig that can significantly reduce repair and replacement costs.

In order to achieve the above object, the present invention insert jig insert according to the present invention is detachable to at least two guide holes perforated outside the main core carved into the shape of the injection molded product, the insert of the main core An insert jig for inserting an insert nut into the insert jig, the insert jig being opposed to the main core; A second fixing plate opposed to the high fixing plate and connected at predetermined intervals; A guide pin protruding from the upper fixing plate and detachable from the guide hole; An insert pin protruding relatively smaller than the guide pin on an upper side of the sub-plate; An insert insertion part connected to an inner side of the insert pin and a second fixing plate to insert an insert nut into a main core; And a central axis connecting the high fixing plate and the second fixing plate.

Description

Injection insert jig {A INSERT JIG OF INJECTION MOLDING PRODUCT}             

Figure 1a is a schematic diagram of a conventional insert jig

1B is a perspective view of a conventional insert jig pressed state;

2 is a schematic diagram of an embodiment according to the present invention;

3 is a perspective view of one embodiment according to the present invention;

4 is a plan view of one embodiment according to the present invention;

5 is a cross-sectional view taken along line A-A of FIG.

6 is a cross-sectional view taken along line B-B of FIG. 4;

7 is a schematic view of a state in which the insert insertion portion is pressed.

* Explanation of symbols for the main parts of the drawings

 1: injection mold 2: main core

 3: insert nut 4: guide ball

10: high end 11: stopper

12: weight loss hole 20: the second fixed plate

30: guide pin 40: insert pin

50: insert insert 51: connecting shaft

52: reciprocating spring 53: insertion pin

54: buffer spring 60: central axis

61: upper fixing part 62: lower connection part

The present invention relates to an injection molded insert jig, and more particularly, by providing a pair of guide pins in a guide hole drilled outside of the main core, the insert nut can be easily inserted in the exact position of the insert even in an unskilled hole. In addition, the mold repair cost is greatly reduced by preventing damage to the main core in which the injection molding is carved, and a stopper is provided to prevent the insert pin from directly contacting the main core, thereby preventing the insert pin from being damaged. The present invention relates to an injection molding insert jig that can greatly reduce the cost of repair and replacement, and can be conveniently handled by greatly reducing the weight of the insert jig.

In general, a housing such as a mobile phone or a communication device product that is molded using an injection mold is molded by inserting a metal insert nut into the inside thereof to reduce the weight and fasten it with other parts.

Inserting the insert nut into the product to be injection-molded as described above is called insert injection, the mechanism for insert injection as described above is called insert jig.

FIG. 1A is a schematic view of a conventional insert jig. The conventional insert jig inserts an insert pin 130 into a main core 102 in which an injection molded shape seated inside an injection mold 101 is carved. Insert 103).

FIG. 1B is a perspective view of a conventional insert jig in a pressurized state, and the conventional insert jig has a rectangular coarse plate 110 facing the main core 102 and a predetermined interval facing the cog plate 110. Four insert pins connected to the second fixing plate 120 and the insert nut 103 protruding from the upper side of the sub-fixing plate 110 and received therein are inserted into the inserts of the main core 102 ( 130).

However, the conventional insert jig has to insert the insert pin 130 containing the insert nut 103 in the main core 102 directly, so that the insert pin is positioned at the insert position of the main core 102 in which the injection-molded shape is engraved. There was a problem that the appearance of the injection molding molded on the main core 102 is often caused by the main core 102 around the insert is damaged because the 130 is not inserted correctly, thereby preventing the appearance defect of the injection In order to repair the main core 102 in order to increase the repair cost was also a problem.

In addition, in the conventional insert jig, since the insert pin 130 must be inserted in direct contact with the main core 102, the end face of the insert pin 130 is damaged, and the insert pin 130 has to be repaired and replaced frequently. there was.

In addition, the weight of the sub-fixing plate 110 and the second fixing plate 120 was heavy, there was also a problem inconvenient handling.

The present invention has been made in order to solve the above problems, an object of the present invention is to provide an insert pin containing an insert nut is provided with a guide pin that can be easily inserted without directly contacting the main core insert pin even if unskilled In addition to providing accurate inserts into the main core, it also provides an injection molding insert jig that can significantly reduce mold repair costs by preventing damage to the main core.

In addition, it is possible to reduce the cost of repairing and replacing the insert pin by providing a stopper to prevent the insert pin from being damaged in advance. have.

In order to achieve the above object, the injection molding insert jig according to the present invention is attached to and detached from a plurality of perforated guide holes on the outer side of the main core in which the injection molded product shape is inserted into the insert jig inserting the insert nut into the main core. A rectangular coplanar plate opposed to the main core; A second fixing plate opposed to the high fixing plate and connected at predetermined intervals; A pair of guide pins protruding from the upper fixing plate and detachable from the guide holes; A plurality of insert pins protruding relatively smaller than the guide pins on the upper fixing plate to accommodate insert nuts therein; A plurality of insert inserting portions connected to an inner side of the insert pin and a second fixing plate to insert insert nuts into a main core; And a central axis connecting the central portion of the sub-fixing plate to the central portion of the second fixing plate.

The upper edge of the sub-fixing plate is provided with a plurality of stoppers protruding higher than the insert pin, and a plurality of weight-loss holes are perforated to reduce the weight inside the sub-fixing plate and the second fixing plate. It is also possible that the cross section is reduced in diameter to facilitate insertion into the guide hole of the silver injection mold.

The insert inserting portion has a cylindrical connecting shaft, one side of which is inserted into the lower side of the insert pin and the other of which is connected to the second fixing plate, and a reciprocating spring that is extrapolated to the outer circumference of the connecting shaft to reciprocate the sub-fixing plate, It is accommodated in the inner side is fixed to the second fixing plate is characterized in that it consists of an insertion pin for inserting the insert nut to the main core, and a buffer spring to buffer the insertion pin to protect the insertion pin at the lower end of the insertion pin.

An upper fixing part is provided on the upper side of the central axis so that the central axis is fixed to the sub-fixing plate, and a lower connection part is provided on the lower side of the central axis so that the central axis is connected to the second fixing plate.

Hereinafter, an embodiment of the injection molding insert jig according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a schematic diagram of one embodiment according to the present invention, Figure 3 is a perspective view of one embodiment according to the present invention, Figure 4 is a plan view of one embodiment according to the present invention, Figure 5 is a cross-sectional view AA of Figure 4, Figure 6 is a sectional view taken along line BB of FIG. 4, and FIG. 7 is a schematic view of a state in which the insert insertion portion is pressed.

As shown in Figures 2 to 4, the injection molding insert jig according to the present invention is a rectangular high-fixing plate 10 facing the main core (2) carved into the shape of the injection-molded product, and the The second fixing plate 20 facing each other and connected at predetermined intervals, a pair of guide pins 30 protruding from the upper fixing plate 10 to be detached from the guide hole 4, and the high fixing plate 10. An insert pin 40 for receiving the insert nut 3 on the upper side, four insert inserting portions 50 for inserting the insert nut 3 on the main core 2, and the high fixing plate 10 Consists of a central axis (60) connecting the central portion of and the central portion of the second fixing plate (20).

In addition, four upper stoppers 11 protruding higher than the insert pin 40 are provided at the upper edge portion of the high fixing plate 10 so that the insert pin 40 does not directly contact the main core 2. A plurality of weight loss holes 12 may be drilled in the inner side of the high fixing plate 10 and the second fixing plate 20 so that the weight is reduced.

In addition, it is also preferable that the guide pin 30 is the diameter of the cross section upward to facilitate insertion into the guide hole (4) of the injection mold (1).

In addition, the insert pin 40 is protruded relatively smaller than the guide pin 30 on the upper side of the fixing plate 10 and is formed in a double-ply cylindrical shape so that the insert nut 3 is accommodated therein.

In Figure 5, the insert inserting portion 50 is one side is inserted into the inner circumference of the insert pin 40 and the other side is connected to the four connecting shaft 51 and the second fixing plate 20, the connecting shaft ( A reciprocating spring 52 which is extrapolated to an outer circumference of the 51 to reciprocate the sub-fixing plate 10, and is accommodated inside the connecting shaft 51, and one side is fixed to the second fixing plate 20 to insert nuts. It is also preferably composed of an insertion pin (53) for inserting (3) to the main core (2), and a buffer spring (54) seated on the lower end of the insertion pin (53) to buffer the insertion pin (53) to protect it. Do.

In FIG. 6, the central axis 60 connects the central portion of the sub-fixing plate 10 with the central portion of the second fixing plate 20, and the central axis 60 is provided above the central axis 60. An upper fixing portion 61 is provided to be fixed to the top plate 10, and a lower connecting portion 62 is provided below the central shaft 60 so that the central shaft 60 is connected to the second fixing plate 20. It is okay to be.

Looking at the action of the injection molding insert jig according to the present invention having such a configuration as follows.

2 to 4, the injection molding insert jig according to the present invention is formed in a predetermined interval between the main plate 2 of the rectangular opposite to the main core (2) carved into the injection mold shape inside the injection mold (1) The two fixing plates 20 are opposed to each other.

In addition, the pair of guide pins 30 protruding from the upper fixing plate 10 is detached from the guide hole (4) perforated outside the main core (2), the upper side of the fixing plate (10) The insert pin 40 protruding relatively smaller than the guide pin 30 is formed in a double cylindrical shape to accommodate the insert nut 3.

When inserting the insert nut 3 into the main core 2, the insert pin 40 is inserted by inserting a pair of guide pins 30 into the guide holes 4 drilled outside the main core 2. Since the main core 2 is not in direct contact with the main core 2, the main core 2 in which the injection molded shape is engraved is prevented in advance, so that the repair of the main core 2 is unnecessary and the repair cost can be greatly reduced.

In addition, the guide pin 30 is axially upwardly cross-sectioned to be easily inserted into the guide hole 4 of the injection mold 1 so that the insert nut 3 can be inserted into the main core 2 even in the unskilled hole. It will be able to insert it correctly.

In addition, an insert pin is provided at an upper edge portion of the high fixing plate 10 so that the insert pin 40 protrudes higher than the insert pin 40 so that the insert pin 40 does not directly contact the main core 2. The damage to the 40 can be prevented in advance, thereby reducing the cost of repairing and replacing the insert pin 40.

In addition, a plurality of weight-loss holes 12 are drilled in the inner side of the high fixing plate 10 and the second fixing plate 20 so that the weight is reduced, so that the handle can be conveniently handled.

In FIG. 5, the insert inserting portion 50 has a cylindrical connecting shaft 51 inserted into the inner circumference of the insert pin 40 and connected to the second fixing plate 20, and of the connecting shaft 51. The reciprocating spring 52 extrapolated to the outer circumference moves the sub-fixing plate 10 reciprocally, and the insertion pin 53 accommodated inside the connecting shaft 51 has one side fixed to the second fixing plate 20. The insert nut (3) seated on the upper side is inserted into the main core (2), the buffer spring 54 seated on the lower end of the insertion pin 53 is the case when the insertion pin 53 is reciprocated The shock can be buffered to prevent the insertion pin 53 from being damaged.

In FIG. 6, the central shaft 60 connects the central portion of the sub-fixing plate 10 with the central portion of the second fixing plate 20, and an upper fixing portion 61 is provided above the central shaft 60. The central shaft 60 is fixed to the fixing plate 10, and a lower connecting portion 62 is provided below the central shaft 60 to connect the central shaft 60 to the second fixing plate 20. .

As shown in FIG. 7, when inserting the insert nut 3 into the main core 2, when the second fixing plate 20 is pressed, the insert inserting portion 50 connected to the second fixing plate 20 is pressed. ) Is moved upward to discharge the insert nut 3 seated on the inner side of the insert pin 40 to be inserted into the insert of the main core (2).

As those skilled in the art to which the present invention pertains, the present invention can be variously substituted, modified, and changed without departing from the technical spirit of the present invention. .

As described in detail above, the injection molding insert jig according to the present invention can easily insert the insert nut in the insert position at the correct position of the insert even by an unskilled hole by easily inserting a pair of guide pins into the guide hole drilled outside the main core. In addition, since the insert pin is not in direct contact with the main core, damage to the main core in which the injection molded shape is carved can be prevented in advance, thereby greatly reducing mold repair cost.

In addition, by providing a stopper to prevent the insert pin from contacting the main core at the upper edge of the upper fixing plate, the insert pin is prevented from being damaged in advance, thereby greatly reducing the cost of repairing and replacing the insert pin.

In addition, a plurality of weight-loss holes are drilled in the inner side of the sub-fixing plate and the second fixing plate, thereby reducing the weight and thus making it easier to handle.

Claims (6)

In the insert jig detachably attached to the plurality of guide holes (4) perforated on the outer side of the main core (2) in which the injection molded shape, and inserting the insert nut (3) to the insert of the main core (2), A rectangular base plate (10) opposed to the main core (2); A second fixing plate 20 opposite to the high fixing plate 10 and connected at a predetermined interval; A pair of guide pins 30 protruding from the upper fixing plate 10 to be detached from the guide hole 4; A plurality of insert pins 40 protruding relatively smaller than the guide pins 30 on the upper fixing plate 10 to accommodate insert nuts 3 therein; A plurality of insert inserting parts 50 connected to the inside of the insert pin 40 and the second fixing plate 20 to insert the insert nut 3 into the main core 2; Injection insert insert jig, characterized in that consisting of; a central shaft (60) connecting the central portion of the high fixing plate 10 and the central portion of the second fixing plate (20). The method of claim 1, The upper edge portion of the high fixing plate 10 is characterized in that the insert pin 40 is provided with a plurality of stoppers 11 protruding higher than the insert pin 40 so as not to contact the main core (2) Injection insert jig. The method of claim 2, Injection molding insert jig, characterized in that a plurality of weight loss holes (12) perforated so that the weight is reduced in the inner side of the high fixing plate (10) and the second fixing plate (20). The method of claim 1, The guide pin 30 is an injection molding insert jig, characterized in that the cross section is reduced in diameter to the upper side for easy insertion into the guide hole (4) of the injection mold (1). The method of claim 1, The insert inserting portion 50 has a cylindrical connecting shaft 51 having one side inserted into the inner circumference of the insert pin 40 and the other side connected to the second fixing plate 20, and the connecting shaft 51 of the insert inserting portion 50. A reciprocating spring 52 which is extrapolated to an outer circumference to reciprocate the sub-fixing plate 10, and is accommodated inside the connecting shaft 51, and one side is fixed to the second fixing plate 20 to insert an insert nut into the main core. Injection insert jig, characterized in that consisting of the insertion pin (53) to be inserted into the buffer pin (54) to protect the insertion pin (53) at the lower end of the insertion pin (53). The method of claim 1, An upper fixing portion 61 is provided on the upper side of the central axis 60 so that the central axis 60 is fixed to the sub-fixing plate 10, and the central axis 60 is below the central axis 60. Injection insert jig characterized in that the lower connection portion 62 is provided to be connected to the second fixing plate (20).

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