JP2003001678A - Injection mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection mold having constitution suitable for high speed injection molding while using a slide core. SOLUTION: The injection mold 10 is equipped with a fixed mold 12 and a movable mold 14 constituted in a movable manner so as to be joined to the fixed mold and constituted so that a cavity is formed by joining the fixed mold and the movable mold and a molten material is injected in the cavity to manufacture a product having a shape corresponding to that of the cavity. This injection mold 10 is further equipped with a movable slide piece S arranged at a predetermined position in the cavity at the time of joining and slide units 26, 34, 48 and 60 for moving the slide piece independently of the movement of the movable mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding die, and more particularly to a high-speed injection molding die for mass production.

[0002]

2. Description of the Related Art Injection molding is a method for molding materials to mass-produce products. In injection molding, generally, a mold including a fixed mold and a movable mold configured to be movable with respect to the fixed mold is used, and the fixed mold and the movable mold are bonded to each other. The molten material is injected and cured in the cavity, which is the space formed in the above, and then the two molds are separated, and the product corresponding to the cavity shape molded in the cavity is taken out. According to the injection molding having such a configuration, products having the same shape can be mass-produced.

[0003]

In recent years, the life cycle of products has become extremely short. Therefore, when developing a new product, it is necessary to complete the product design in a short period of time and, after the design is completed, quickly and mass-produce the product and put it on the market to secure a superiority in the market. Has been.
Therefore, an injection molding die for manufacturing a product by injection molding is also required to have higher ability to manufacture a large amount of products in a short period of time. This also applies to injection molding using other materials such as metal.

On the other hand, when a product having a boss hole, an undercut portion, etc. is manufactured by injection molding, the boss hole portion, the undercut portion, etc. of these molded products are separated from the moving mold and the fixed mold after injection molding, Or, it interferes with the removal of the product from the mold. Therefore, when the molten material is injected, it is placed in the cavity to form a boss hole and an undercut portion, and after the molten material is hardened, it is withdrawn from the cavity to allow the mold separation and product removal. The core was used. Then, such movement of the slide core, that is, movement / arrangement in the cavity and withdrawal from the cavity, causes the movement of the movable die with respect to the fixed die to be mechanically moved by a cam mechanism, an angular pin, or the like. It was done by converting.

However, in such a structure, since the movement of the slide core depends on the movement of the movable die with respect to the fixed die, the timing for arranging the slide core in the cavity and withdrawing the slide core are set independently of the die movement. Could not be done, which put constraints on the mold design.

Further, in such a structure, the movement in the front-rear direction in which the movable die and the fixed die relatively come close to and away from each other is converted into a lateral movement of the slide core by a cam mechanism, an angular pin, or the like. Since it has been converted into a static form, the surface pressure acts on the cam surface, the inclined surface, etc. and a load is applied. And
When the opening / closing speed of the movable die and the fixed die is increased in order to shorten the time required for one cycle of injection molding, this load sharply increases, and there is a problem that the life of the die is shortened.

Further, in the above structure, the cam mechanism starts to operate immediately before the movable mold and the fixed mold, which are in a high relative speed with each other, are joined to each other. Therefore, the cam mechanism starts to operate. There was a problem that the impact load was sometimes applied to the cam surface and the life of the mold was shortened.

Therefore, the conventional mold structure in which the slide core is driven by the cam mechanism or the like is not suitable for high-speed injection molding in which a large amount of injection molding is performed in a fixed time.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an injection molding die having a structure suitable for high-speed injection molding while using a slide core.

[0010]

According to the present invention, a fixed die and a movable die configured to be movable so as to be joined to the fixed die are provided, and the fixed die and the movable die are joined together. A mold for injection molding for producing a product having a shape corresponding to the shape of a cavity by forming a cavity by injecting a molten material into the cavity, which is arranged at a predetermined position in the cavity at the time of joining. There is provided a mold for injection molding, comprising: a movable slide piece that moves and a slide unit that moves the slide piece independently of the movement of the movable die.

According to such a structure, the slide piece is arranged at a predetermined position in the cavity or is retracted from the predetermined position by a predetermined distance independently of the relative movement of the fixed die and the movable die. High-speed injection molding can be performed by increasing the relative moving speed of the fixed mold and the movable mold without shortening the life.

According to a preferred aspect of the present invention, the fixed die includes a fixed die base portion and a fixed die cavity forming portion detachably attached to the fixed die base portion to form the cavity at the time of the joining. The movable die includes a movable die base portion and a movable die cavity forming portion that is detachably attached to the movable die base portion and forms the cavity together with the fixed die cavity forming portion at the time of the joining. In such a configuration, both the fixed type and the movable type are cassette types in which the portion forming the cavity can be replaced as a cassette.

According to a preferred aspect of the present invention, the slide piece is a slide piece that is moved from the outside of the cavity toward the inside of the cavity during the joining, and all the slide pieces are connected to the slide unit. With such a configuration, the degree of freedom in designing the mold is further increased, and the relative moving speed between the fixed mold and the movable mold is further increased, so that it is possible to perform injection molding at a higher speed.

According to another aspect of the present invention, a slide unit is provided in each of the fixed die and the movable die.

According to another aspect of the present invention, a drive mechanism for moving the slide unit back and forth toward the cavity is further provided, and the drive mechanism is attached to the fixed base portion and the movable base portion. ing.

With this structure, the fixed-type and movable-type cavity forming portions do not need to include a drive mechanism for driving the slide unit. Therefore, the cavity forming portion produced for each product to be produced has a simple structure, and is lightweight and inexpensive.

According to another preferred aspect of the present invention, the slide unit includes a base unit side slide unit attached to the fixed or movable base unit, and the fixed or movable cavity forming unit. And a cavity forming portion side slide unit which is attached to the base portion side slide unit and is engageable with the base portion side slide unit. Further, it is preferable that when the cavity forming portion is attached to the base portion, the cavity forming portion side slide unit can automatically engage with the base portion side slide unit.

According to the present invention, the first mold and the second mold configured to be bonded to the first mold, and the first and second molds are relatively moved to move the first mold and the second mold. A moving means for joining the second die, and a cavity is formed by joining the first die and the second die, and a cavity is formed by injecting a molten material into the cavity. A mold for injection molding for manufacturing a product having the above-mentioned shape, which is detachably attached to each of the first mold and the second mold and forms the cavity at the time of joining. And a second cavity forming portion, a slide piece movable so as to be arranged at a predetermined position in the cavity at the time of the joining, and a slide unit for moving the slide piece independently of the relative movement. prepare for Injection mold, characterized in Rukoto is provided.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An injection molding die 10 according to a preferred embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic perspective view showing an injection molding die 10 in a mold open state, and FIG. 2 is a schematic perspective view of the injection molding die 10 in a mold clamping state.

As shown in FIGS. 1 and 2, the injection molding die 10 includes a fixed die 12 and a movable die 14. These fixed mold 12 and movable mold 14 have a mold open position (FIG. 1) in which they are separated from each other and a mold clamping position (FIG. 2) in which they are joined to form a cavity corresponding to the product shape. It is mounted on an injection molding machine (not shown) so that it can move between them. Injection mold 10
The injection molding is performed by injecting the molten resin material into the cavity formed between the fixed mold 12 and the movable mold 14 at the mold clamping position, similarly to the known injection molding mold, and then, The movable mold 14 is moved (opened) to the position shown in FIG. 2 so that the cured product is removed from the mold.

Next, the structure of the fixed die 12 will be described. Figure 3
FIG. 4 is a perspective view of the fixed mold 12 in the mold open state, and FIG. 4 is a perspective view of the fixed mold 12 in the mold clamped state. It should be noted that in FIGS. 3 and 4, the fixed mold 12 is shown in an upside down state from the state shown in FIGS. 1 and 2.

As shown in FIGS. 3 and 4, the fixed die 12 includes a base plate 16 having a substantially rectangular shape.
Near the four corners of the base plate 16, a substantially cylindrical guide bush 18 is attached. Further, in the central region of the base plate 16, a fixed-side cassette mold 20 that is detachable in a cassette manner is arranged.

FIG. 5 is a perspective view showing a schematic structure of the fixed-side cassette mold 20. As shown in FIG. 5, the fixed-side cassette mold 20 includes a substantially rectangular fixed-type cassette mounting plate 22 and a cabinet block 24 arranged at a substantially central position on the fixed-type cassette mounting plate 22. ing.

The cavities block 24 is a main part of a mold that forms a cavity together with a core block, which will be described later,
It is made of a metal material suitable for the mold. Further, the cabinet block 24 is, for example, cut based on the shape data of the product manufactured by injection molding, and the unevenness corresponding to the product shape is formed on the surface thereof. In the present embodiment, the injection-molding die 10 is a die for injection-molding the front side portion of the body of the mobile phone, and as shown by the dotted lines in FIGS. Concavities and convexities corresponding to the body shape of the mobile phone are formed on the surface.

Fixed-side cassette-side slides (slide units) 26a, 26b, 26c, and 26d are arranged on the outer sides of the four sides of the cabinet block 24, respectively. The cassette-side slide 26a and the like are rod-shaped members that extend along one side of the cab block 24, and have a groove portion that opens downward at an outer position.

These cassette side slides 26a, 26
b, 26c, and 26d are the cabinet blocks 24, respectively.
Are arranged so as to extend in parallel along each side of the. Also, cassette side slides 26a, 26b, 26c, 26
d is a direction orthogonal to each side of the cabinet block 24, respectively, and a retracted position (FIG. 3) away from the cabinet block 24 while maintaining a parallel state with each side of the cabinet block 24, and It is configured to be able to reciprocate between an approaching position (FIG. 4) approaching.

Each cassette side slide 26a, 26b, 2
6c and 26d slide on slide guides 28a, 28b, 28c and 28d attached to the fixed type cassette attachment plate 22 at the outer peripheral position of the cabinet block 24, and thereby the retracted position (FIG. 3) and the approach position (FIG. 3). 4) It is configured to be able to move to and from.

Cassette side slides 26a, 26b, 26
A slide piece (side core) S for forming an undercut portion, a boss hole, etc. on c and 26d as required.
Are attached by one or more screws. The slide piece (side core) S has a tip having a shape corresponding to an undercut portion, a boss hole, etc. to be formed, and at the time of die bonding, at least the tip portion is arranged at a predetermined position in the cavity, It is configured to form an undercut portion, a boss hole, etc. in the molded product. In this embodiment, all the slide pieces of the fixed die 12 that are moved from the outside of the cavity toward the inside of the cavity at the time of joining are the cassette side slides 26a, 26b, 26c, 26.
It is connected to d. Depending on the shape of the molded product, the slide 26 on the cassette side to which the slide piece cannot be attached
There may be a, 26b, 26c, 26.

Cassette side slides 26a, 26b, 26
c, 26d and the slide pieces attached thereto are cassette side slides 26a, 26b, 26c, 26.
When d is in the approaching position, the slide piece is arranged in the cavity forming the undercut portion, the boss hole and the like in the injection molded product, and the cassette side slides 26a, 26
When b, 26c and 26d are in the retracted position, the slide piece is retracted to a position where the mold can be opened and the injection molded product can be removed from the mold.

Further, guide pins 30 having a substantially cylindrical shape are attached near the four corners of the fixed type cassette attachment plate 22. Further, a plurality of positioning holes 32 for positioning the cabinet block with respect to the fixed cassette mounting plate 22 and the like are provided in the peripheral portion of the cabinet block 24.

As shown in FIGS. 3 and 4, at the position around the fixed-side cassette die 20 of the fixed die 12, a base-side slide (slide unit) 34a for the fixed die,
34b, 34c, 34d are movably attached. Base side slides 34a, 34b, 34c, 34d
Are configured to respectively correspond to the cassette side slides 26a, 26b, 26c and 26d of the fixed side cassette mold 20. Base side slides 34a, 34b,
34c and 34d are respectively cassette side slide 2
6a, 26b, 26c, 26d having a length substantially equal to
The cassette-side slides 26a, 26b, 26c, and 26d are provided with protrusions shaped to engage with the grooves.

When the cassette mold 20 is attached to the base plate 16 side, the base side slides 34a, 34b, 34
The protrusions of c and 34d are the cassette side slides 26a and 2d.
6b, 26c, 26d in the groove portion, respectively,
Engage, cassette side slides 26a, 26b, 26c,
26d respectively include base side slides 34a, 34
It comes to move integrally with each of b, 34c, and 34d.

Furthermore, the base side slides 34a, 34
At the rear of b, 34c, 34d, that is, at the position opposite to the fixed-side cassette mold 20, the base-side slides 34a, 34b, 34c, 3 in the direction away from the cassette mold 20 are provided.
Locking blocks 35a, 35 for restricting the movement of 4d
b, 35c, 35d are attached.

Hydraulic cylinder units 36 shown by dotted lines are attached to the outer surfaces of the sides of the base plate 16, respectively. The rod of each cylinder unit 36 extends into the base plate 16 through rod holes 16a (only two are shown) provided in the base plate 16 in a direction orthogonal to each side of the cabinet block 24, and slides on the base side 34a, 34a.
It is connected to b, 34c, and 34d. With this configuration, as the rod of the hydraulic cylinder expands and contracts, the base-side slides 34a, 34b, 34c, and 34d move in a direction orthogonal to each side of the cabinet block 24.
The hydraulic cylinder 36 is connected to a control device (not shown) of the injection molding machine, and its operation is controlled by this control device.

As described above, in the present embodiment, the base side slides 34a,
34b, 34c, 34d, the cassette side slides 26a, 26b, 26c, 26d engaged with them, and the cassette side slides 26a, 26b, 26c, 2
The slide piece attached to 6d can be moved from the retracted position to the approach position as shown by the arrow A in FIG. 3 and from the approach position to the retracted position as shown by the arrow B in FIG. It is configured.

In this embodiment, each hydraulic cylinder 36 is
Since it operates completely independently of the movement of other hydraulic cylinders and the movement of the movable die 14, the base side slides 34a, 3
4b, 34c, 34d, cassette side slides 26a, 2
6b, 26c, 26d, further, the slide piece is the movement of another slide piece and the movement of the movable die 14, that is,
Clamping / mold opening operation (opening / closing operation) of the injection molding die 10
Moved, completely independent of.

Next, the structure of the movable die 14 will be described. Figure 6
Is a perspective view of the movable die 14 in the mold open state, and FIG. 7 is a perspective view of the movable die 14 in the mold clamped state. As shown in FIGS. 6 and 7, the movable die 14 includes a base plate 38 having a substantially rectangular shape. Guide pins 40 are attached near the four corners of the base plate 38 at positions corresponding to the fixed, substantially cylindrical guide bushes 18. Also,
In the center area of the base plate 38, a movable cassette die 42 that can be detached in a cassette manner is arranged.

FIG. 8 is a perspective view showing a schematic structure of the moving-side cassette mold 42. As shown in FIG. 8, the moving-side cassette mold 42 includes a substantially rectangular receiving plate 44.
And a core block 46 arranged at a substantially central position on the receiving plate 44.

The core block 46 is a main part of a mold which is joined to the above-mentioned cabinet block 24 and forms a cavity which is a molding space, and is made of a metal material suitable for the mold. Further, the core block 46 is, for example, cut based on the shape data of the product manufactured by injection molding, and unevenness corresponding to the product shape is formed on the surface thereof. In this embodiment, the injection-molding die 10 is a die for injection-molding the front side portion of the body of the mobile phone, and as shown by the dotted lines in FIGS. Concavities and convexities corresponding to the body shape of the mobile phone are formed on the surface.

Movable cassette side slides (slide units) 48a, 48b, 48c and 48d are arranged at the outer positions of the four sides of the cabinet block 46, respectively. The cassette-side slide 48a and the like are rod-shaped members that extend along one side of the core block 46, and have a groove portion that opens downward at the outer position.

These cassette side slides 48a, 48
b, 48c, and 48d are arranged so as to extend in parallel along each side of the core block 46. Also, cassette side slides 48a, 48b, 48c, 48
d is a direction orthogonal to each side of the core block 46, and a retracted position (FIG. 6) separated from the core block 46 while maintaining a parallel state with each side of the core block 46.
It is configured to be movable between an approach position (FIG. 7) approaching the core block 46.

Each cassette side slide 48a, 48b, 4
8 c and 48 d are slide guides 50 a, 50 b and 5 attached to the receiving plate 44 at the outer peripheral position of the core block 46.
By sliding on 0c and 50d, it is possible to move between the retracted position (FIG. 6) and the approach position (FIG. 7).

Cassette side slides 48a, 48b, 48
One or more slide pieces S for forming an undercut portion, a boss hole and the like are attached to the c and 48d by screws or the like, if necessary. In the present embodiment, all slide pieces of the movable die 14 which are moved from the outside of the cavity toward the inside of the cavity at the time of joining are connected to the cassette side slides 48a, 48b, 48c and 48d. Depending on the shape of the molded product, the slides 46a, 46 on the cassette side to which the slide pieces cannot be attached are attached.
b, 46c, 46d may be present.

Cassette side slides 48a, 48b, 48
c, 48d and the slide pieces attached thereto are cassette side slides 48a, 48b, 48c, 48.
When d is in the approaching position, the slide piece is arranged in the cavity forming the undercut portion, the boss hole and the like in the injection molded product, and the cassette side slide 48a,
The slide pieces are configured to be retracted to a position where the mold can be opened and the injection molded product can be removed from the mold when 48b, 48c and 48d are in the retracted position.

Further, guide bushes 52 for accommodating the guide pins 30 of the stationary cassette mold are attached near the four corners of the receiving plate 44. Further, the core block 46
A plurality of positioning holes 54 for positioning the core block 46 with respect to the receiving plate 44 and the like are provided in the peripheral portion of the.

The moving-side cassette mold 42 includes an ejector guide pin 55 for guiding an ejector pin (not shown) for pushing out a cured molded product, an ejector plate 56 for guiding and supporting the ejector guide pin 55, and And an ejector support plate 58. These ejector plate 56 and ejector support plate 5
When the injection molding is completed, the reference numeral 8 moves in a direction approaching the receiving plate 44 to project an ejector pin from an ejector hole (not shown) formed in the core block 46 to cure the cured molded product into a core. It is configured to be removed from the block 46.

As shown in FIG. 6 and FIG. 7, the base side slides 60a, 60b, 60c, 60 for the movable die are provided around the movable side cassette die 42 of the movable die 14.
d is movably attached. Base side slide 6
0a, 60b, 60c, and 60d are cassette-side slides 48a and 48b of the moving-side cassette mold 42, respectively.
It is configured to correspond to 48c and 48d. The base side slides 60a, 60b, 60c, 60d are respectively cassette side slides 48a, 48b, 48c,
It has a length almost equal to 48d, and the cassette side slide 4
8a, 48b, 48c and 48d are provided with protrusions shaped to mesh with the grooves.

When the moving side cassette mold 42 is attached to the base plate 38 side, the base side slides 60a, 60b,
60c, 60d are cassette side slides 48a, 48
The cassette side slides 48a, 48b, 48c, 4 are engaged with the groove portions formed in b, 48c, 48d, respectively.
8d are the base side slides 60a, 60b,
It becomes possible to move integrally with each of 60c and 60d.

Further, the base side slides 60a, 60
The slides 60a, 60b, 60 on the base side in the direction of moving away from the cassette die 42 on the moving side are located behind b, 60c, 60d, that is, on the opposite side of the die 42 on the moving side.
Locking block 62 for restricting movement of c and 60d
a, 62b, 62c, 62d are attached.

Hydraulic cylinder units 64 indicated by dotted lines are attached to the outer surface of each side of the base plate 38. The rod of each cylinder unit 64 extends into the base plate 38 in the direction orthogonal to each side of the core block 46 through the rod holes 38a (only two are shown) provided in the base plate 38, and the base side slides 60a and 60b. ,
It is connected to 60c and 60d. With this configuration, as the rod of the hydraulic cylinder expands and contracts, the base side slides 60a, 60b, 60c, and 60d move to the core block
Will move in a direction orthogonal to each side of. The hydraulic cylinder 64 is connected to a control device (not shown) of the injection molding machine, and its operation is controlled by this control device.

As described above, in this embodiment, the base side slides 60a, 60b and 6 are moved by the hydraulic cylinder 64.
0c, 60d, the cassette side slides 48a, 48b, 48c, 48d engaged therewith, and the slide pieces attached to the cassette side slides 48a, 48b, 48c, 48d are indicated by arrow C in FIG. Thus, it is configured to be moved from the retracted position to the approaching position and from the approaching position to the retracted position as indicated by arrow D in FIG.

In this embodiment, each hydraulic cylinder 64 is
Since it operates completely independently of the movements of the other hydraulic cylinders and the movement of the movable die 14, the base side slides 60a, 6
0b, 60c, 60d, cassette side slides 48a, 4
8b, 48c, 48d, further, the slide piece is the movement of other slide pieces and the movement of the movable die 14, that is,
The injection mold 10 can be moved completely independently of the mold clamping and mold opening (opening / closing) operations.

Next, the movement of the slide core and the like in the injection molding die 10 will be specifically described with reference to FIGS. 9 to 12 are schematic cross-sectional views of the fixed mold and the movable-side cassette molds 20 and 42.

FIG. 9 is a schematic cross-sectional view of the fixed mold and movable cassette molds 20 and 42 which are in a joined state after injection molding is completed. In this state, the fixed mold 12 and the movable mold 14 are completely joined (Fig. 2), and the cabinet block 2
The resin injected into the cavity (space) corresponding to the product shape formed between the core 4 and the core block 46 is the molded product P.
Has become. In the injection molding die 10, when performing mold clamping, all slide cores are shown in FIG. 2 by the cassette side slides 26, 48, the base side slide, and the hydraulic cylinder independently of the movement of the movable die. Place it in the approach position as shown.

When the molded product P is cured, all the slide cores are returned to the retracted position by the hydraulic cylinders before being separated from the fixed mold 12 of the movable mold 14, that is, before the mold opening (FIG. 10). Speed, amount to retreat slide core,
Also, the timing can be freely set for each hydraulic cylinder.

When the slide core retreats, the movable die 14 is moved in the direction of arrow E to separate it from the fixed die 12,
The mold is opened (Fig. 11).

Finally, the molded product P is ejected by an ejector pin (not shown) and removed from the core block (FIG. 12). In the illustrated example, the undercut portion formed inside the molded product P is configured to be pulled out by the inclined pin P that moves inward.

The present invention is not limited to the above-described embodiments, but various changes and modifications can be made within the scope of the matters described in the claims.

In the above embodiment, the hydraulic cylinder for moving the slide is mounted outside the mounting plate.
The hydraulic cylinder may be built in the mounting plate. With such a configuration, the hydraulic cylinder does not project to the outside of the mold, so that the work for mounting the mold on the injection molding machine becomes easy.

Further, instead of the hydraulic cylinder, another drive source such as a motor may be used to move the slide unit.

[0061]

According to the present invention, there is provided an injection molding die having a structure suitable for high speed injection molding while using a slide core.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an injection molding die of an embodiment of the present invention in a mold open state,

FIG. 2 is a schematic perspective view of an injection mold according to an embodiment of the present invention in a mold clamped state.

FIG. 3 is a perspective view of a fixed mold in a mold open state.

FIG. 4 is a perspective view of a fixed mold in a mold clamped state.

FIG. 5 is a perspective view showing a schematic configuration of a fixed-side cassette mold.

FIG. 6 is a perspective view of a movable mold in a mold open state.

FIG. 7 is a perspective view of the movable mold in a mold clamped state.

FIG. 8 is a perspective view showing a schematic configuration of a moving-side cassette mold.

FIG. 9 is a cross-sectional view illustrating the movement of the slide core and the like in the injection molding die according to the embodiment of the present invention.

FIG. 10 is a cross-sectional view illustrating the movement of the slide core and the like in the injection molding die according to the embodiment of the present invention.

FIG. 11 is a cross-sectional view illustrating the movement of the slide core and the like in the injection molding die according to the embodiment of the present invention.

FIG. 12 is a cross-sectional view illustrating the movement of the slide core and the like in the injection molding die according to the embodiment of the present invention.

[Explanation of symbols]

10: Mold for injection molding 12: Fixed type 14: Mobile 20: Fixed-side cassette mold (cabinet) 26a, 26b, 26c, 26d: cassette side slide 34a, 34b, 34c, 34d: Base side slide 36: Hydraulic cylinder unit 42: Moving side cassette mold (core) 46: Core block 48a, 48b, 48c, 48d: cassette side slide 60a, 60b, 60c, 60d: Base side slide 64: Hydraulic cylinder unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinichi Abe             3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture             In ceremony company INCS (72) Inventor Masato Otsubo             3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture             In ceremony company INCS (72) Inventor Kenta Iwadate             3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture             In ceremony company INCS (72) Inventor Jun Nishijima             3-2-1 Sakado, Takatsu-ku, Kawasaki City, Kanagawa Prefecture             In ceremony company INCS F-term (reference) 4F202 CA11 CK54 CK73

Claims (7)

[Claims] 1. A fixed die and a movable die configured to be movable so as to be joined to the fixed die, wherein a cavity is formed by joining the fixed die and the movable die, and the cavity is formed in the cavity. An injection mold for manufacturing a product having a shape corresponding to a cavity shape by injecting a molten material, wherein the movable slide piece arranged at a predetermined position in the cavity at the time of the joining, and the slide. An injection molding die, comprising: a slide unit that moves the top independently of the movement of the movable die. 2. The fixed die includes a fixed die base portion and a fixed die cavity forming portion that is detachably attached to the fixed die base portion and forms the cavity at the time of the joining, and the movable die is movable. The injection according to claim 1, further comprising a mold base part and a movable mold cavity forming part that is detachably attached to the movable mold base part and forms the cavity together with the fixed mold cavity forming part at the time of the joining. Mold for molding. 3. The slide piece is a slide piece that is moved from the outside of the cavity toward the inside of the cavity at the time of the joining, and all of the slide pieces are connected to the slide unit. Injection mold. 4. The injection molding die according to claim 3, wherein the slide unit is provided in each of the fixed die and the movable die. 5. The drive mechanism according to claim 4, further comprising a drive mechanism for moving the slide unit back and forth toward the cavity, wherein the drive mechanism is attached to the fixed base portion and the movable base portion. Injection mold. 6. The base unit side slide unit attached to the fixed type or movable type base unit, and the base unit side slide unit attached to the fixed type or movable type cavity forming unit. The mold for injection molding according to any one of claims 1 to 5, further comprising: a cavity forming portion-side slide unit that can be engaged. 7. A first mold and a second mold configured to be bonded to the first mold, and the first and second molds by relatively moving the first and second molds. And a moving means for joining the first die and the second die to form a cavity, and by injecting a molten material into the cavity, a product having a shape corresponding to the shape of the cavity is formed. And a first cavity forming portion that is detachably attached to each of the first die and the second die and forms the cavity at the time of the joining. A cavity forming part, a slide piece that is movable so as to be arranged at a predetermined position in the cavity at the time of joining, and a slide unit that moves the slide piece independently of the relative movement. Special A mold for injection molding.