KR100887765B1 - Injection mold with slide core and control method - Google Patents

Abstract

Disclosed are an injection mold having a slide core and a control method thereof. The injection mold having the slide core disclosed therein and a control method thereof include: an upper mold having an upper cavity for forming an upper shape of a mold injection molding having upper and lower extremities protruding from both sides, and protruding toward the upper mold; For forming the first slide core installed in the upper mold and the lower shape of the mold injection in contact with the core member of the first slide core so that the core member for forming the formed first injection member reciprocating motion A lower mold provided with a lower cavity, a second slide core provided on an upper side of the lower mold, and having a reciprocating operation so that the upper extremity of the mold injection is spaced apart from the lower mold. Eject member which spaces the lower side of the mold injection is spaced apart from the lower mold Characterized in having a.

Upper mold, lower mold, eject member, first slide core, second slide core

Description

Injection mold with slide core and control method thereof {Mold with slide core and control method

1 is a perspective view showing the appearance of an injection mold according to the prior art.

Figure 2 is a perspective view showing the main portion of the injection mold having a slide core according to an embodiment of the present invention.

3 is a side cross-sectional view showing a main portion of the injection mold having a slide core shown in FIG.

FIG. 4 is a diagram illustrating that the first slide core is operated in FIG. 3.

FIG. 5 is a view showing that the second slide core is operated while the upper mold and the lower mold are opened in FIG. 4.

FIG. 6 is a view showing that the ejection member is operated in FIG. 5 so that the mold injection mold is demolded from the lower mold.

7 is a plan view showing a pre-operational state of the first slide core in the injection mold with a slide core according to an embodiment of the present invention.

8 is a plan view illustrating a state after an operation of the first slide core illustrated in FIG. 7.

9 is a side cross-sectional view taken along the line "A-A" in FIG.

<Description of Symbols for Main Parts of Drawings>

20: injection mold 30: upper mold

32: upper cavity 34: upper side wall

36: upper block 37: first lower block

38: second lower block 40: mold injection

42: upper part 44: upper projection

46: first projection member 48: second projection member

49: lower back meat 50: the first slide core

51: outer case 52: core member

53: working body 54: guide groove

55: inclined bar 56: moving body

57: power member 58: first rod

59: second rod 60: bracket member

62: boundary portion 64: inner space portion

70: second slide core 72: tip portion

73: groove portion 74: lower slope

75 body portion 76 elastic member

80: protruding member 82: fixing bolt

84: upper inclined surface 90: lower mold

92: lower cavity 100: eject member

102 head 104 104 pin

The present invention relates to an injection mold having a slide core and a control method thereof, and more particularly, to reduce the production cost by reducing the number of parts for eliminating the undercut of the mold injection, and to minimize the installation space and reduce the space efficiency. An injection mold having a slide core for maximizing and a control method thereof.

In general, injection molding is a molding method in which a thermoplastic plastic molding material or a thermosetting plastic molding material is heated and melted in an injection molding machine, pressurized into a cavity of an injection mold, and solidified or cured to produce a mold injection molding product.

In the injection mold, the molten material is injected into the cavity, which is the molding space of the product, through the injection spaces such as the runner and the gate and molded.

Mold injection molding is completed in the cabinet is separated from the lower mold by the ejecting member is elevated in accordance with the operation of the mill.

An obstacle such as a jaw or a protrusion that makes it difficult to separate the mold injection product from the cavity in the extraction process of the injection mold is called an undercut.

When the undercut is present in only one portion such as the lower part or the side of the mold injection part, the slide core is simply processed by moving to the corresponding part, but the undercut is not easy when there are undercuts on the side and the bottom.

Hereinafter, a conventional injection mold will be described with reference to the accompanying drawings.

As shown in Figure 1, the conventional injection mold (1) is provided with an upper mold (3) and a lower mold (7), respectively, and fixed to the lower side of the upper mold (3) fixed plate 5 protruding state do.

The lower mold 7 is provided with a plate 9, a movable holder 11 is installed through the plate 9, and the movable plate 13 is fixed to the upper side of the movable holder 11.

The movable plate 13 has a curved surface that is convex toward the upper side, and the corresponding fixing plate 5 has a curved surface that is concave upward.

A cavity 15, which is a space for molding the mold injection product 17, is provided between the stationary plate 5 and the movable plate 13.

The inner side of the mold injection 17 is provided with a projection member facing in the horizontal direction and a projection member facing in the vertical direction, in order to eliminate the undercut of the mold injection 17, the projection member of the mold injection 17 is directed downward Molding is made, and a separate inclined core 19 and a plurality of power members are used to eliminate the undercut of the projection member formed in the horizontal direction.

However, the injection mold 1 increases the cost of production equipment by using a relatively large number of power members and inclined cores 19, etc. to eliminate undercuts.

In addition, since the installation area of the devices for eliminating the undercut is relatively large, a mold installation space having a relatively large area is required in order to mold two mold injection objects in one injection operation. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, the injection mold having a slide core that can prevent the increase in production equipment costs due to the relatively complicated configuration of the slide core used to eliminate the undercut of the injection mold And a control method thereof.

Another object of the present invention is to provide an injection mold having a slide core for eliminating the need for a large area installation space due to the relatively large size of the injection mold for producing a mold injection molding, and a control method thereof. have.

An injection mold having a slide core according to an embodiment of the present invention includes: an upper mold having an upper cavity for forming an upper shape of a mold injection molding having upper and lower extremities protruding from both sides, and the upper mold; A first slide core installed in the upper mold and a lower shape of the mold injection product in contact with the core member of the first slide core to reciprocate the core member for forming the first protrusion member of the mold injection molded product protruding toward The lower mold is provided with a lower cavity for forming, the second slide core and the second slide core having a reciprocating operation so as to be spaced apart from the lower mold is provided on the upper side of the lower mold and the lower mold Eject spaced apart from the lower mold the lower side of the mold injection, the upper side is spaced apart from the lower mold It is configured to include a member.

Preferably, the upper mold is provided with a plurality of blocks to form an inner space for mounting the first slide core.

The upper cavity has a convex curved shape toward the lower side, and the lower cavity coupled to the upper cavity has a concave curved shape toward the lower side.

The first slide core, the second slide core, the eject member, the upper cavity and the lower cavity are provided in the width direction of the upper mold and the lower mold in order to mold the plurality of mold injection products.

The first protruding member protrudes in the horizontal direction, and the core member of the first slide core for forming the first protruding member is reciprocated in the horizontal direction from the inside of the upper mold.

The number of core members is increased or decreased by the number of first protrusion members protruding in the horizontal direction from the mold injection product.

In addition, the first slide core is connected to the core member and is integrally operated, and has a working body provided with a guide groove in an oblique direction, and reciprocates in a direction toward the working body, and is inserted into the guide groove. The sliding bar is configured to include a movable body fixed to one side and a power member connected to the movable body to provide a reciprocating motion.

In addition, the power member is configured to include a hydraulic cylinder which is operated hydraulically.

And, the working body is characterized in that a plurality of core members are connected.

The second slide core includes a front end portion in contact with the upper extremity, a body part having a groove part connected to the distal end with a lower inclined surface, and an elastic member configured to press the body part in the upper extremity direction. do.

In addition, a protruding member having an upper inclined surface is mounted on the upper mold at an upper side of the groove part of the body part.

According to an embodiment of the present invention, a control method of an injection mold having a slide core includes: an injection molding step of molding a mold injection by supplying a molding material in a state where the upper mold and the lower mold are closed, and when the mold injection is cured, A first slide core operating step in which a core member of a first slide core formed by forming a first protrusion member in contact with a side surface of the mold injection member moves inside the upper mold to separate the first protrusion member and the core member; Separation step of the upper mold and the lower mold is opened after the first slide core is moved, and the upper slide and the upper mold and the second slide core is pushed the upper grate formed by protruding part of the injection to the upper side of the mold injection A second slide core operation step of allowing the upper part of the injection molding to be released from the lower mold and the phase of the mold injection molding. After the mold is released from the lower mold is characterized in that it comprises a releasing step to move the ejecting member connected to the lower portion of the injection molding protruded to the lower side of the mold injection to the upper side to release the mold injection in the lower mold. do.

Preferably, in the first slide core operation step, the movable body connected to the power member and the inclined bar fixed to the movable body are moved after the power member mounted on the upper mold is operated, and the inclined bar is guided along the guide groove. By moving, the moving body connected to the core member is moved to the inside of the upper mold.

In the operation of the second slide core, the protruding member coupled to the upper mold is separated from the second slide core, and at the same time, the second slide core is moved in the direction of the upper extremity of the mold injection by the pressing force of the elastic member. It features.

Hereinafter, a preferred embodiment of an injection mold having a slide core and a control method thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

Figure 2 is a perspective view showing the main portion of the injection mold having a slide core according to an embodiment of the present invention, Figure 3 is a side cross-sectional view showing the main portion of the injection mold having a slide core shown in FIG. 4 is a view showing that the first slide core is operated in FIG. 3, FIG. 5 is a view showing that the second slide core is operated while the upper mold and the lower mold are opened in FIG. 4, and FIG. 6 is FIG. FIG. 7 is a view showing that the ejection member is demolded from the lower mold by operating the eject member, and FIG. 7 is a plan view illustrating a state before the first slide core is operated in the injection mold having the slide core according to an embodiment of the present invention. 8 is a plan view illustrating a state after an operation of the first slide core illustrated in FIG. 7, and FIG. 9 is a side cross-sectional view of the AA direction in FIG. 7.

2 and 3, the injection mold 20 having the slide core according to the embodiment of the present invention is divided into an upper mold 30 and a lower mold 90, and the upper mold 30 An outer case 51 is formed on the upper side wall 34 of the first slide core 50 to surround the outer side of the power member 57.

The upper mold 30 may be formed as a single block, but is provided with a plurality of blocks to form an inner space for mounting the first slide core 50 and then coupled to each other to form the upper mold 30. To form.

In detail, the upper mold 30 has a first lower block 37 and a second lower block 38 coupled to the lower side of the upper block 36 to form an outer shape, and the first lower block 37 After the internal space for mounting the first slide core 50 is processed, the first lower block 37 and the second lower block 38 are combined to form a boundary 62.

As described above, the upper mold 30 includes a plurality of blocks including an upper block 36, a first lower block 37, and a second lower block 38 for mounting the first slide core 50. Since the space for the first slide core 50 is mounted inside the second lower block 38, the installation work of the first slide core 50 in the upper mold 30 is more easily performed. Will be done.

The upper mold 30 is composed of three blocks, which is an embodiment of the present invention, and the upper mold 30 includes four or more blocks within a technical concept for easily installing the first slide core 50. It is also another embodiment of the present invention composed of two blocks or less.

Between the upper mold 30 and the lower mold 90, a groove-shaped upper cavity 32 and a lower cavity 92 for forming the mold injection molding 40 are provided.

The upper cavity 32 is provided with a groove for molding the upper shape of the mold injection molding 40, and the lower cavity 92 is also provided with a groove for molding the lower shape of the mold injection molding 40.

The mold injection molding 40 may be molded into various shapes between the upper cavity 32 and the lower cavity 92. In an embodiment of the present invention, a shape of an injection molding having a round shape is described as an example, but is not limited thereto. It is not.

The mold injection molding 40 is provided on both sides of the upper grate 42 and the lower grate 49 formed by protruding a portion of the injection molding forming the mold injection 40 to both sides, the upper grate 42 is the upper It protrudes toward the upper side (refer to FIG. 3) toward the metal mold | die 30.

The first protrusion member 46 of the mold injection molding 40 protruding toward the upper mold 30 is protruded in a horizontal direction (hereinafter referred to in FIG. 2), and is formed to form the first protrusion member 46. The core member 52 of the one slide core 50 is also reciprocated in the horizontal direction in the upper mold (30).

The first protrusion member 46 and the first slide core 50 are installed in a horizontal direction, which is an embodiment of the present invention, and the first protrusion is within a range of -30 degrees to +30 degrees based on the horizontal direction. It will be another embodiment of the present invention that the installation direction of the member 46 and the first slide core 50 is changed.

Each core member 52 is required for the first protrusion member 46 formed in the horizontal direction in the mold injection molding 40, but the second protrusion member 48 molded in the vertical direction in the mold injection molding 40 is required. When the upper mold 30 and the lower mold 90 is open, the second protrusion member 48 is naturally separated from the upper mold 30 so that a separate core member is not required.

The first slide core 50 is operated to eliminate the undercut generated by the first protrusion member 46.

A first slide core 50 will be described with reference to FIGS. 7 to 9.

A groove for forming the first protrusion member 46 is formed at one end of the core member 52 which is installed in contact with the first protrusion member 46 of the mold injection molding 40.

The core member 52 is provided in accordance with the number of the first protrusion members 46, and the core member 52 is connected to the working body 53 provided with the guide groove 54 in an oblique direction.

That is, the number of the core members 52 is increased or decreased by the number of the first protrusion members 46 protruding in the horizontal direction from the mold injection molding 40.

When the number of the first protrusion members 46 is one, the number of core members 52 connected to the working body 53 is one, or the number of the first protrusion members 46 is two or three. If more than one, the number of the core member 52 coupled to and separated from the first protrusion member 46 is equal to the number of the first protrusion member 46.

Since the core member 52 is connected to the working body 53, the core member 52 has an operating state in which the core member 52 is also moved in accordance with the movement of the working body 53.

In addition, the first slide core 50 is connected to the core member 52 to operate integrally, and an operating body 53 having a guide groove 54 in an oblique direction is provided with the first protrusion member 46. Reciprocating motion in the direction of).

The moving body 56 which reciprocates in the direction toward the working body 53 is fixed to one side of the inclined bar 55 which is inserted into the guide groove 54 in a block shape and slides.

The guide groove 54 of the working body 53 and the inclined bar 55 of the moving body 56 are inclined at the same angle, and the direction perpendicular to the moving direction of the moving body 56 or It will be possible to change the angle and shape of the guide groove 54 and the inclined bar 55 in the technical concept for moving the working body 53 in the other direction, other mechanical elements including the gear member is also applicable.

The power member 57 is connected to the moving body 56 to provide a reciprocating motion may use a variety of power sources, in the embodiment of the present invention is a hydraulic cylinder which is operated by using a hydraulic pressure is used as the power member 57 In addition, of course, various embodiments may be applied.

The power member 57 and the outer case 51 surrounding it are protruded from the upper side wall 34. For this purpose, the bracket member 60 is first fixed to the upper side wall 34, and then the bracket member 60 is fixed. ), The power member 57 is fixed.

In addition, an outer case 51 surrounding the outside of the power member 57 and the bracket member 60 is provided, and the damage of the power member 57 and the bracket member 60 by the outer case 51 is provided. Will be prevented.

The first rod 58 protrudes from the power member 57 to reciprocate by hydraulic operation, and one end of the second rod 59 having a 'T' shape is fastened to the first rod 58. do.

The head protrusion of the second rod 59 is fixed to the one end of the moving body 56, the inclined bar 55 is moved with the moving body 56 is an inner space having an operating space ( The movement takes place inside 64).

The inclined bar 55 and the guide groove 54 are inclined at an angle with respect to the traveling direction of the movable body 56 so that the working body 53 is moved by the movement of the inclined bar 55 in an oblique direction. Is installed.

The first slide core 50 may be operated in the indirect drive method as described above, the core member 52 may be operated in a direct drive method is mounted on one end of the direct drive unit.

On the other hand, the upper mold 30 has a boundary portion 62 which is a joining surface is formed in a portion where the first lower block 37 and the second lower block 38 contact, the boundary portion 62 is the movable body 56 It is formed along the moving direction of the) guides the reciprocating motion of the moving body (56).

The second slide core 70 for eliminating the undercut generated by the upper protrusion 44 in the mold injection molding 40 will be described with reference to FIGS. 3 to 6.

The second slide core 70 provided on the upper side of the lower mold 90 in contact with the upper mold 30 has a reciprocating motion such that the upper grate 42 of the mold injection molding 40 is spaced apart from the lower mold 90. Will have

The second slide core 70 has a body portion 75 having a tip portion 72 in contact with the upper extremity 42 and a groove portion 73 connected to the tip portion 72 and having a lower inclined surface 74. ), And an elastic member 76 for pressing the body portion 75 in the direction of the upper surplus 42.

The elastic member 76 is operated while the upper mold 30 and the lower mold 90 are opened, or after the upper mold 30 and the lower mold 90 are opened, the upper extremity 42 is turned to the right ( In the technical concept for eliminating the undercut by pushing to 3) can be used, such as a single acting member or a reciprocating actuating member, in the embodiment of the present invention will be used as a spring member as the elastic member 76.

In addition, a protruding member 80 having an upper inclined surface 84 is mounted on the upper mold 30 at an upper side of the groove portion 73 of the body portion 75.

The protruding member 80 is inserted into the groove 73 of the second slide core 70 while the upper mold 30 is in contact with the lower mold 90.

The upper inclined surface 84 of the protruding member 80 pushes the lower inclined surface 74 of the groove 73 so that the body 75 of the second slide core 70 moves to the left side (see FIG. 3). do.

Various coupling members can be used in the technical concept for fixing the protruding member 80 to the upper mold 30. In an embodiment of the present invention, the protruding member 80 is fixed using the fixing bolt 82. The upper mold 30 is fixed to the lower side.

The second slide core 70 is mounted in a groove provided on an upper surface of the lower mold 90 in contact with the upper mold 30.

The lower mold 90 is provided with a lower cavity 92 for molding the lower shape of the mold injection molding 40.

In addition, the lower mold 90 is provided with an ejecting member 100 spaced apart from the lower mold 90 to the lower side of the mold injection product 40, the upper side of which is spaced apart from the lower mold 90.

The eject member 100 includes a head portion 102 to which the lower surplus 49 is fixed, and a mill pin 104 for pushing the head portion 102 upward.

Preferably, the lower end of the upper cavity 32 and the upper mold 30 has a convex curved shape toward the lower side, and the lower cavity 92 and the lower mold 90 coupled to the upper cavity 32. The upper end of) has a concave curved shape toward the lower side.

The upper cavity 32 and the lower cavity 92 are formed in the shape as described above, since the first slide core 50 for removing the undercut generated by the mold injection molding 40 is installed in the upper mold 30. The first projection member 46 protruding from the inner surface of the mold injection molding 40 having the arc shape is due to being installed in the upper mold 30.

As described above, the first slide core 50 for removing the undercut of the first protrusion member 46 protruding from the inner surface of the mold injection molding 40 is installed in the upper mold 30, and the mold injection molding 40 of The second slide core 70 for eliminating the undercut generated by the upper protrusion 44 provided at one end is installed in the lower mold 90 so that the first slide core for eliminating the undercut of the mold injection molding 40 is provided. The structure and operation state of the 50 and the second slide core 70 are relatively simple.

Therefore, in the related art, the injection molded shape of the mold injection molding 40 is convex toward the upper side in order to eliminate the undercut of the first protrusion member 46 and the second protrusion member 48 provided in the mold injection molding 40. And the size of the injection mold is large because the slide core for solving the undercut of the mold injection molding 40 has a relatively complex configuration, the injection mold 20 according to an embodiment of the present invention is a conventional injection mold It is possible to mold the same quantity or more mold injection molding 40 in half size, thereby improving the productivity and installation cost.

The first slide core 50, the second slide core and the eject member 100 in the width direction of the upper mold 30 and the lower mold 90 in order to mold the mold injection product 40 into two or more plurality. ), And the upper cavity 32 and the lower cavity 92 is preferably provided in plurality.

In an embodiment of the present invention, the upper cavity 32 and the lower cavity 92 are provided with two in the width direction of the injection mold 20 so that two mold injection moldings 40 are molded by one injection operation. The first slide core 50, the second slide core and the ejecting member 100 are provided two by two for molding the mold injection molding 40. However, these are merely examples and the size and use of the injection mold 20 are different. It may be provided one by one, or may be provided in plurality two or more.

Mold injection molding 40 according to an embodiment of the present invention is formed so that the upper cavity (32) and the lower cavity (92) so that the concave shape toward the upper side (hereinafter referred to Figure 2), the upper side, The first protrusion member 46 and the second protrusion member 48 of the mold injection molding 40 are also formed to protrude in the direction toward the upper mold.

The first slide core 50 for removing the undercut generated by the first protrusion member 46 in the mold injection molding 40 is installed in the upper mold 30, and by the upper protrusion 44. The second slide core 70 for removing the generated undercut is installed in the lower mold 90.

Therefore, the injection mold 20 has a volume about half smaller than that of a conventional mold, and thus maximizes space utilization by allowing two identical injection moldings 40 to be produced by a single injection operation.

A control method of an injection mold having a slide core according to an embodiment of the present invention having the above configuration will be described.

In the control method of the injection mold 20 having a slide core according to an embodiment of the present invention, as shown in Figure 3 the upper mold 30 and the lower mold 90 by supplying the molding material in a closed state of the mold It has an injection molding step of molding the injection molding (40).

When the mold injection molding 40 is hardened through the injection molding step, the first slide core 50 forming the first protrusion member 46 in contact with the side surface of the mold injection molding 40 is illustrated in FIG. 4. The core member 52 of the first move to the inside of the upper mold 30, the first projection member 46 of the mold injection molding 40 and the first core member 52 of the first slide core 50 is separated It has a slide core operating stage.

As a result, the undercut generated by the first protrusion member 46 of the mold injection molding 40 is eliminated.

7 to 9, the operation of the first slide core will be described in detail. As shown in FIG. ) Will be molded.

When the curing of the mold injection product 40 including the first protrusion member 46 is completed, as shown in FIG. 8, the power member 57 mounted on the upper mold 30 is operated to operate the first rod ( 58) and the second rod 59 connected thereto is moved downward (based on FIG. 8).

As a result, the moving body 56 connected to the second rod 59 moves downward along the boundary 62, and the inclined bar 55 having one end fixed to the moving body 56 also moves downward. do.

As the guide groove 54 of the operating body 53 into which the inclined bar 55 is inserted also penetrates in an oblique direction, the working body as the inclined bar 55 is moved along the guide groove 54. 53 moves to the right so that the core member 52 is separated from the first protrusion member 46.

Operation of the first slide core 50 for the return of the core member 52 is performed in the reverse order of the operation.

As shown in FIG. 5 after the first slide core 50 moves, the upper mold 30 and the lower mold 90 have a separation step in which they are opened.

In addition, the upper mold 30 and the lower mold 90 are opened while the second slide core 70 pushes the upper extremity 42 having a part of the injection molded product protruded to the upper side of the mold injection molding 40. The upper portion of the 40 has a second slide core 70 operating step to be released from the lower mold (90).

That is, the protrusion member 80 coupled to the upper mold 30 is separated from the groove portion 73 of the body portion 75 constituting the second slide core 70 and connected to the body portion 75. Due to the pressing force of the elastic member 76, the second slide core 70 is moved in the direction of the upper grate 42 of the mold injection molding 40 so that the upper grate 42 is released from the lower mold 90. do.

Therefore, since the upper protrusion 44 of the mold injection molding 40 connected to the upper grate 42 is also released from the groove of the lower cavity 92, the upper protrusion 44 is formed on the upper end of the lower cavity 92. Undercut caused by jams can be eliminated.

After the upper part of the mold injection molding 40 is released from the lower mold 90, as shown in FIG. By moving the member 100 upwards, the lower mold 90 has a release step for releasing the mold injection product 40.

After the ejection member 100 is moved upward, the lower part 49 is cut from the head 102.

Then, by cutting the upper grate 42 and the lower grate 49 provided on both sides of the mold injection molding 40, the production of the mold injection molding 40 is completed.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the injection mold provided with the slide core according to the present invention and the control method thereof, unlike the conventional invention, the mechanical configuration for eliminating the undercut of the mold injection is simpler than before, reducing the production equipment cost and at the same time operating reliability Can improve.

In addition, the present invention enables the injection mold to be formed in half the size of the conventional injection mold because the direction of the injection molding of the mold injection is opposite to the conventional and the method for eliminating the undercut can be reduced, thereby reducing the cost and area of the installation space By reducing, space use can be maximized.

Claims (14)

An upper mold having an upper cavity for forming an upper shape of a mold injection molding having upper and lower extremities protruding from both sides; A first slide core installed in the upper mold such that a core member for forming the first protrusion member of the mold injection portion protruding toward the upper mold reciprocates; A lower mold having a lower cavity for forming a lower shape of the mold injection product in contact with the core member of the first slide core; A second slide core provided on an upper side of the lower mold and having a reciprocating operation so that the upper extremity of the mold injection is spaced apart from the lower mold; And And a ejecting member spaced apart from the lower mold by the second slide core, the lower side of which is spaced apart from the upper mold from the lower mold by the second slide core. The method of claim 1, The upper mold is provided with a plurality of blocks injection mold having a slide core, characterized in that to form an inner space for mounting the first slide core. The method of claim 1, The upper cavity has a convex curved shape toward the lower side, and the lower cavity coupled to the upper cavity has a concave curved shape toward the lower side injection mold provided with a slide core. The method of claim 1, A plurality of slide cores are provided with a plurality of the first slide core, the second slide core, the eject member, the upper cavity and the lower cavity in the width direction of the upper mold and the lower mold in order to mold the plurality of mold injections. Injection mold provided. The method of claim 1, The first protrusion member protrudes in a horizontal direction, and the core member of the first slide core for forming the first protrusion member is reciprocated in the horizontal direction from the inside of the upper mold. mold. The method of claim 5, wherein Injection mold with a slide core, characterized in that the number of the core member is increased or decreased by the number of the first projection member protruding in the horizontal direction from the mold injection. The method of claim 1, The first slide core is connected to the core member is made integrally with the operation body provided with a guide groove in an oblique direction, A movable body reciprocating in the direction toward the working body, the inclined bar being inserted into the guide groove and fixed to one side thereof; Injection mold provided with a slide core characterized in that it comprises a power member connected to the moving body to provide a reciprocating motion. The method of claim 7, wherein The power member is an injection mold having a slide core, characterized in that it comprises a hydraulic cylinder which is operated hydraulically. The method of claim 7, wherein Injection mold provided with a slide core, characterized in that the working body is connected to a plurality of core members. The method of claim 1, The second slide core has a front end portion in contact with the upper side; A body part having a groove part connected to the tip part and having a lower inclined surface; Injection mold provided with a slide core, characterized in that it comprises an elastic member for pressing the body portion in the upper side direction. The method of claim 10, An injection mold having a slide core, wherein a protruding member having an upper inclined surface is mounted on an upper mold at an upper side of a groove of the body portion. An injection molding step of forming a mold injection product by supplying a molding material in a state in which the upper mold and the lower mold are closed; When the mold injection is cured, the core member of the first slide core which contacts the side surface of the mold injection to form the first protrusion member moves to the inside of the upper mold to separate the first protrusion member and the core member. Core operating step; A separation step in which the upper mold and the lower mold are opened after the first slide core is moved; A second slide core operating step in which the upper mold and the lower mold are opened so that a second slide core pushes an upper extremity formed by protruding a portion of the injection molding toward the upper side of the mold injection mold so that an upper part of the mold injection mold is released from the lower mold; And A release step of releasing the mold injection mold from the lower mold by moving the ejecting member connected to the lower extremity in which a part of the injection molding protrudes to the lower side of the mold injection mold after the upper portion of the mold injection mold is released from the lower mold; Control method of the injection mold with a slide core, characterized in that it comprises a. The method of claim 12, In the operation of the first slide core, the movable body connected to the power member and the inclined bar fixed to the movable body are moved after the power member mounted on the upper mold is operated, and the inclined bar is moved along the guide groove. Control body of the injection mold with a slide core, characterized in that the moving body connected to the core member is moved to the inside of the upper mold. The method of claim 12, In the operation of the second slide core, the protruding member coupled to the upper mold is separated from the second slide core, and at the same time, the second slide core is moved in the upper extremity direction of the mold injection by the pressing force of the elastic member. Control method of injection mold.

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