CN106426810A - Sliding core device - Google Patents

Abstract

The invention provides a sliding core device. The sliding core device (5) includes a core guide (7) and a force applying mechanism (16). The core guide (7) guides the slide core (6) so that it can move freely between the molding position S2 and the retracted position S1. The urging mechanism (16) is provided on the slide core (6), and urges the slide core (6) from the molding position S2 to the retracted position S1. The urging mechanism (16) implements the urging force by making the protruding part (18) protrude from the end surface (17) of the molding position S2 side of the sliding core (6) and push it to the side of the first split mold (1). on the pressure surface (19). The core guide part (7) is fixed to the first split mold (1) by bolts (32). The bolt (32) is inserted through a counterbore provided on the bottom surface (15) of the guide bar groove portion (14) of the core guide. In this sliding core device, the core guide can be fixed without hindrance by bolts inserted from the side of the sliding core.

Description

Sliding core device

technical field

The present invention relates to a slide core device that includes a slide core provided in a mold for molding and drives the slide core.

Background technique

As such a sliding core device, the following device is known: the device is equipped with a core guide portion fixed on the movable side parting surface of the mould, along a sliding direction intersecting with the opening and closing direction of the mould. Guide the sliding core. The core guide part has a groove-shaped guide rail part, and the guide rail part is engaged with the guided part formed on the slide core to guide the slide core along the above-mentioned sliding direction. The slide core is guided so as to be movable between a molding position of the cavity and a retracted position separated from the molding position (for example, refer to Patent Document 1).

The sliding core device of Patent Document 1 is provided with an urging mechanism for urging the sliding core from the molding position to the retracted position, thereby preventing the sliding core from returning to the molding position from the retracted position due to gravity when the mold is opened. . The force application mechanism has a guide hole, a moving body and an elastic body. The guide hole is formed on the core guide part extending along the sliding direction; the moving body is provided in the guiding hole so as to be able to move freely in the sliding direction; the elastic body imparts elastic force to the moving body.

An elongated hole is provided on the core guide part, and the elongated hole penetrates from the guide hole to the sliding core and extends along the above-mentioned sliding direction. A protruding pin is inserted into the elongated hole, the base end of the protruding pin is fixed to the moving body, and the top end of the protruding pin protrudes toward the slide core. The elastic body is disposed in the guide hole, so that the elastic body exerts an elastic force on the sliding core through the moving body and the protruding pin, thereby applying force to the sliding core in the direction of the retracted position. A groove-shaped recess is provided on the sliding core, which extends along the sliding direction and engages with the top of the protruding pin. One end of the recess acts as a stopper for locking the protruding pin, and the other end reaches the core. end face of the guide.

Sometimes guide holes, long holes, etc. are provided on the side of the slide core, the protruding pins protrude toward the core guide side, and the recesses of the grooves are provided on the core guide side. In this case, the fixation of the core guide to the movable mold of the mold can be achieved by inserting a bolt from the sliding core side to the core guide and screwing the bolt to the internal thread of the movable mold. superior. The head of the bolt is accommodated in a counterbore provided on the bottom surface of the rail portion of the core guide portion.

As a result, the core guide can be removed from the parting surface of the mold or attached to the parting surface. Therefore, the core guide can be replaced without removing the mold from the injection molding machine. Improvement of molding efficiency etc.

prior art literature

patent documents

Patent Document 1: Japanese Patent No. 3846448.

However, in the slide core device of Patent Document 1, even when the guide hole etc. is provided on the slide core side and the groove-like recess is provided on the core guide side, there is actually a problem that it is difficult to The problem of inserting bolts on one side of the sliding core to fix the core guide to the movable mold. That is, since there is a groove-like concave portion on the bottom surface of the guide rail portion of the core guide portion, it may be difficult to provide the counterbore on the bottom surface.

Specifically, if the protruding pin protruding from the core guide side becomes loose, the tip of the protruding pin may interfere with the counterbore or/and the bolt, thereby hindering the smooth movement of the sliding core. In addition, there is a possibility that the protruding pin may loosen and fall into the counterbore or the groove-like recess, resulting in an operation failure.

Contents of the invention

In view of the above-mentioned technical problems in the prior art, an object of the present invention is to provide a sliding core device capable of fixing a core guide without hindrance by bolts inserted from the side of the sliding core.

A sliding core device according to a first aspect of the invention includes a sliding core, a core guide, a cam, and an urging mechanism, wherein,

The sliding core is driven in the second direction on a first part of the first part and the second part, the first part and the second part are opened in the first direction and closed, the second direction intersects with the first direction;

The core guide is fixed to the first split mold, and guides the slide core so that the slide core can move freely between a molding position and a retracted position. The position where the first split mold and the second split mold jointly form a molding cavity, and the retreat position is a position away from the molding position;

The cam portion is fixed to the second mold, and has a cam surface that moves relatively to the first mold when opening and closing in the first direction. imparting a force in a direction toward the molding position to position the slide core at the molding position when closing, and imparting a force in a direction toward the retracted position to the slide core when opening;

The urging mechanism is provided on the slide core, and urges the slide core from the molding position to the retracted position,

The sliding core device is characterized in that,

The sliding core has a protruding part protruding toward one side of the core guide part and extending in the second direction,

The core guide portion has a groove-shaped guide groove portion for guiding the convex portion in the second direction, and the guide groove portion has a bottom surface,

The urging mechanism includes a protruding portion protruding in the second direction from an end surface of the slide core on the molding position side, and a pressing mechanism; part pushes against the pressing surface, and exerts a force toward the retracted position on the sliding core, and the resisting surface faces in the direction of the retracted position on the first parting mold,

A counterbore for disposing the head of the bolt is provided on the bottom surface of the groove of the guide bar,

The core guide is fixed to the first split mold by the bolt, and the bolt is inserted into the core guide from one side of the groove of the guide bar through the counterbore.

In the first aspect of the invention, by providing an urging mechanism for urging the slide core in the slide core, the protrusion protruding from the end surface of the slide core on the molding position side is pressed by the pressing mechanism. On the pressing surface, the slide core can be urged from the molding position to the retracted position. Therefore, there is no need to provide a pin protruding between the core guide and the slide core and a groove-shaped recess of the core guide that engages with the pin provided in the conventional sliding core device.

Therefore, according to the first aspect of the present invention, the core guide can be fixed to the first branch without any trouble by using the bolt inserted through the counterbore provided on the bottom surface of the guide bar groove portion of the core guide. mold on.

Therefore, in the state where the first split mold and the second split mold are opened, only the sliding core is removed from the core guide part, and the first split mold and the second split mold can be opened from the side of the cutting surface. Since the bolts fixing the core guide are operated, the core guide can be easily attached to and detached from the first split mold.

In addition, as the part thickness from the bottom surface of the guide groove of the core guide to the first parting mold, the core guide only needs to have the height of the counterbore and a thickness capable of securing the following strength: The strength of the head of the bolt accommodated in the counterbore can be maintained. It is therefore possible to reduce the dimension of the core guide in the first direction.

In addition, even if there are water holes for cooling in the first part mold near the core guide part, since the bolts fixing the core guide part are not inserted from the side of the first part mold, it is possible to adopt a method that can simply avoid The composition of the interference between the water hole and the bolt.

A second aspect of the invention is characterized in that, in the first aspect, the pressing mechanism includes a guide hole, a projection limiter, and a biasing member, wherein the guide hole is provided on the slide core and The protruding portion is guided in the second direction; the protruding amount restricting portion is provided on the base end side of the protruding portion and the exit side of the guide hole, and the protruding amount restricting portion and the The protruding portions abut against each other to limit the protruding amount of the protruding portion; the force applying member is arranged between the bottom of the guide hole and the base end of the protruding portion, and is opposed to the protruding direction of the protruding portion. The protrusion exerts force.

According to this aspect, the pressing mechanism can be easily constituted by the guide hole and the urging member. In addition, since the protrusion amount of the protruding portion is restricted by the protrusion amount limiting portion, the slide core can be detached from the core guide portion without detaching the protruding portion and the urging mechanism from the slide core. Therefore, when performing maintenance of the slide core, etc., the protruding portion and the urging member are not lost, and maintenance can be easily performed.

The sliding core device according to the third technical solution of the present invention is characterized in that, in the first technical solution or the second technical solution, a ball plunger is provided on the core guide portion, and the ball plunger moves from the A bottom surface of a guide bar groove portion protrudes for positioning the slide core at the retracted position, and the guide bar groove portion is provided on an end surface of the core guide portion on the retracted position side.

According to the third aspect, the sliding core positioned at the retracted position by the ball plunger can be easily removed from the core guide by pulling out the sliding core positioned at the retracted position by the ball plunger against the pushing force of the ball plunger. .

Therefore, the slide core can be easily detached from the core guide part only by pulling out the slide core positioned at the retracted position from the direction opposite to the molding position.

According to a fourth aspect of the present invention, in the sliding core device according to a fourth aspect of the present invention, in the first aspect to the third aspect, the cam portion includes a first cam that crosses the first direction and the second direction. a driving surface and a second cam driving surface, and the second cam driving surface faces the side opposite to the first cam driving surface; the sliding core has a first driven surface and a second driven surface, when the When the first split mold and the second split mold are closed, the first driven surface receives the force from the first cam driving surface, so that the sliding core is located at the molding position; When the first split mold and the second split mold are opened, the second driven surface receives a force from the second cam driving surface, thereby imparting a force in a direction to move the sliding core to the retracted position.

According to this aspect, the slide core can be moved between the molding position and the withdrawn position in response to the opening and closing drive of the first split mold and the second split mold with a simple configuration without using a hydraulic cylinder or the like. Therefore, the ease of attachment and detachment of the above-mentioned slide core and core guide is not impaired.

Description of drawings

Fig. 1 is a cross-sectional view of a sliding core device according to an embodiment of the present invention in a mold-open state.

Fig. 2 is a cross-sectional view of the sliding core device of Fig. 1 in a state where the mold is closed.

Fig. 3A is a front view of the sliding core body of the sliding core device of Fig. 1; Fig. 3B is a right side view of the sliding core body; Fig. 3C is a bottom view of the sliding core body.

Fig. 4A is a top view of the core guide of the sliding core device of Fig. 1; Fig. 4B is a front view of the core guide; Fig. 4C is a right side view of the core guide.

Fig. 5 is a perspective view showing a state in which the mold of the slide core device of Fig. 1 is opened.

Fig. 6 is a perspective view showing a state in which the mold of the slide core device in Fig. 1 is closed.

FIG. 7 is an enlarged cross-sectional view showing a part of FIG. 1 .

Explanation of reference signs

1 first parting

2 Second parting

4 cavities

6 sliding core

7 core guide

8 Cam section

9a Rib

14 Guide bar groove

15 Bottom

16 force applying mechanism

17 end faces

18 protrusion

19 Pressure surface

20 Push mechanism

22 Pilot hole

23 Protrusion limit part

24 spring (force applying part)

28 counterbore

32 bolts

35 ball plunger

38 First cam driving surface

39 Second cam driving surface

40 First driven surface

41 Second from the East

D1 first direction

D2 second direction

S1 retreat position

S2 forming position

detailed description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a sectional view of a part of a mold having a sliding core device according to an embodiment of the present invention. As shown in FIG. 1 , the mold has a first split mold 1 and a second split mold 2 which are opened and closed in a first direction D1 , and a sliding core device 5 . The sliding core device 5 forms a cavity 4 ( FIG. 2 ), and the cavity 4 is used to form the molded product 3 together with the first split mold 1 and the second split mold 2 . Here, by driving the first split mold 1, the first split mold 1 and the second split mold 2 are opened or closed.

The slide core device 5 includes a slide core 6 , a core guide 7 , and a cam 8 . The slide core 6 is moved on the first split mold 1; the core guide 7 guides the slide core 6 in such a way that the slide core 6 can move freely between the retreat position S1 and the molding position S2 (Fig. 2). ; The cam portion 8 drives the slide core 6 between the retreat position S1 and the molding position S2. The core guide 7 is fixed on the first split mold 1 .

The slide core 6 is composed of a slide core body 9 and a molding portion 11 . The forming part 11 is fixed on the sliding core 9 by means of bolts 10 with hexagon socket holes. The direction in which the slide core 6 is moved is a second direction D2 perpendicular to or crossing the first direction D1.

As shown in FIG. 2 , the molding position S2 is a position where the sliding core 6 forms the cavity 4 together with the first split mold 1 and the second split mold 2 . As shown in FIG. 1 , the retracted position S1 is a position separated from the molding position S2 and where the slide core 6 is retracted. The surface of the molding portion 11 perpendicular to the second direction D2 related to the formation of the cavity 4 has a convex portion 12 for molding an undercut portion of the molded product.

The cam portion 8 is fixed on the second split mold 2 by means of bolts 13 with hexagon socket holes. With the opening and closing drive of the first parting mold in the first direction D1, the cam portion 8 is between the first position K1 away from the sliding core 6 and the second position K2 ( FIG. 2 ) of the sliding core 6 in the molding position S2. to move between.

At this time, the cam portion 8 applies a force toward the molding position S2 when the cam portion 8 moves to the second position K2 to close the mold via a cam surface described later, so that the slide core 6 is located at the molding position S2, and the cam portion 8 When the mold is opened by moving to the first position K1, a force is applied to the sliding core in a direction toward the retracted position S1.

As shown in FIG. 3 , the sliding core body 9 has a protruding portion 9 a protruding toward the core guide portion 7 and extending in the second direction D2 . The cross section of the protruding line part 9a has a convex shape, and the width of the first split mold 1 side is formed larger than the width of the second split mold 2 side.

As shown in FIG. 4 , in order to guide the slide core 6 , the core guide portion 7 has a guide groove portion 14 that guides the convex portion 9 a in the second direction D2 . The guide bar groove portion 14 has a groove shape and has a bottom surface 15 . In addition, the cross section of the guide bar groove 14 has a shape matching the cross section of the protruding line 9a, and the guide bar groove 14 is provided on the end surface of the core guide 7 on the retracted position S1 side. Thereby, the protruding line part 9a can be fitted into the guide bar groove part 14 from the retracted position S1 side, and the protruding line part 9a can be guided by the guide bar groove part 14. As shown in FIG.

As shown in FIG. 1 , the slide core device 5 includes an urging mechanism 16 . The urging mechanism 16 urges the slide core 6 from the molding position S2 to the retracted position S1. The force applying mechanism 16 can prevent the sliding core 6 from returning to the molding position S2 due to gravity when the mold is opened, thereby preventing the sliding core 6 from colliding with the cam portion 8 and being damaged when the mold is subsequently closed. In addition, the urging mechanism 16 can prevent the operator from touching the slide core 6 during maintenance, thereby causing the slide core 6 to return to the molding position S2.

The urging mechanism 16 includes a protruding portion 18 and a pressing mechanism 20 . The protruding portion 18 protrudes from the end surface 17 of the sliding core 6 on the molding position S2 side; the pressing mechanism 20 applies a force toward the retreat position S1 to the sliding core 6 by pressing the protruding portion 18 onto the pressing surface 19 , the pressing surface 19 faces the retracted position S1 on the first split mold 1 .

Here, the pressing surface 19 is constituted by a surface of the movable side insert 21 perpendicular to the second direction D2. The movable side entry 21 is involved in the formation of the cavity 4 as part of the first part-mould 1 .

As shown in FIG. 7 , the pressing mechanism 20 includes a guide hole 22 provided on the slide core 6 , a protrusion amount limiting portion 23 for limiting the protrusion amount of the protrusion, and a spring 24 as a biasing member protruding toward the The direction exerts a force on the protrusion 18 . The guide hole 22 guides the protrusion 18 in the second direction D2. The protrusion amount restricting portion 23 is provided on the base end side of the protruding portion 18 and the exit side of the guide hole 22 , and the protruding amount of the protruding portion 18 is restricted by the abutting of the protruding amount restricting portion 23 and the protruding portion 18 .

Here, the protrusion amount restricting portion 23 is composed of a flange-shaped portion 25 and a small-diameter portion 26 . A flange-shaped portion 25 is provided at a base end portion of the protruding portion 18 ; the small-diameter portion 26 has a diameter smaller than that of the flange-shaped portion 25 . The small-diameter portion 26 is slidably opposed to a portion of the protruding portion 18 that is closer to the tip side than the flange-shaped portion 25 in the second direction D2. The spring 24 is disposed between the bottom of the guide hole 22 closed by the fixing screw 27 and the flange-like portion 25 of the protrusion 18 .

As shown in FIG. 4 , on the bottom surface 15 of the guide bar groove portion 14 of the core guide portion 7 , counterbore holes 28 for arranging bolt heads are provided. In addition, bolt holes 29 are provided in the core guide 7 . The bolt hole 29 penetrates from the counterbore 28 to the surface opposite to the bottom surface 15 .

As shown in FIG. 1 , a movable side profile 30 is provided on the side of the sliding core 6 of the first split mold 1 , and the above-mentioned movable side insert 21 is arranged on the movable side profile 30 . The core guide 7 is disposed in the recess and fixed to the movable side mold plate 30 . The recess is defined by the surface perpendicular to the second direction D2 constituting the pressing surface 19 of the movable side insert 21 and the stepped surface 31 of the movable side profile 30 .

The above-mentioned fixing is realized by the bolts 32 described below. A bolt 32 with a hexagon socket is inserted into the core guide 7 from the side of the guide bar groove 14 through the counterbore 28 . At this time, the bolt 32 is inserted into the bolt hole 29 from the counterbore 28, and is screwed with the female screw 33 provided on the movable side profile 30 constituting the first split mold 1. As shown in FIG.

As shown in FIG. 4 , a ball plunger (ball plunger) 35 is provided on the core guide 7 . When guiding the slide core 6 , the ball head 34 of the ball plunger 35 protrudes from the bottom surface 15 of the guide bar groove 14 . Moreover, as shown in FIG. 3, the recessed part 37 is provided in the opposing surface 36 which opposes the bottom surface 15 of the convex line part 9a of the slide core 6. As shown in FIG. The concave portion 37 is used to cooperate with the ball plunger 35 to position the slide core 6 to the withdrawn position S1.

As shown in FIG. 5 , the cam portion 8 includes a first cam driving surface 38 and a second cam driving surface 39 that cross the first direction D1 and the second direction D2. The second cam driving surface 39 faces the side opposite to the first cam driving surface 38 . The slide core 6 includes a first driven surface 40 and a second driven surface 41 . When the cam portion 8 moves from the first position K1 to the second position K2, the first driven surface 40 is subjected to the force from the first cam driving surface 38, so that the sliding core 6 is located at the forming position S2; When the second position K2 moves to the first position K1 , the second driven surface 41 receives a force from the second cam driving surface 39 , thereby applying a force in the direction of moving the slide core 6 to the withdrawn position S1 . In addition, in FIG. 5, illustration of the molding part 11 is abbreviate|omitted.

In this configuration, as shown in FIG. 1 , in a state where the mold is opened, the cam portion 8 is located at a first position K1 away from the slide core 6 in the first direction D1. In addition, the slide core 6 is positioned at the retracted position S1 by the ball plunger 35 of the core guide 7 . The state of the cam part 8, the slide core main body 9, and the core guide part 7 at this time is shown in FIG.

In this state, when the first split mold 1 starts to move toward the second split mold 2 in the first direction D1 to close the mold, the cam portion 8 starts to relatively move toward the slide core 6 along with the movement. Then, the first cam driving surface 38 and the second driven surface 40 start to slide, and the sliding core 6 is subjected to a force from the first cam driving surface 38 that exceeds the force from the ball plunger 35 in the second direction D2. The force plus the applied force from the applied force mechanism 16.

Thereby, the slide core 6 starts moving to the molding position S2 against the urging force of the urging mechanism 16 along with the guidance of the core guide part 7 . Next, when the mold is closed, the slide core 6 reaches the molding position S2 at the same time as the cam portion 8 reaches the second position K2. Thus, the formation of the cavity 4 is completed. The state of the cam part 8, the slide core main body 9, and the core guide part 7 at this time is shown in FIG.

At this time, the end surface 17 of the sliding core 6 is in contact with the surface perpendicular to the second direction D2 of the pressing surface 19 constituting the movable side insert 21, and the protrusion 18 forming the force applying mechanism 16 is just accommodated in the guide hole 22. status. Then, a molding material is injected into the cavity 4, and after the molding material is solidified and the molding is completed, the first split mold 1 starts to move in order to open the mold.

Thus, the second driven surface 41 of the slide core 6 receives the force from the second cam driving surface 39 of the cam portion 8, and the molded part 11 of the slide core 6 breaks away from the solidified molded product and starts to move toward the slide core 6. The retreat position S1 moves. Thereafter, the second cam driving surface 39 presses the second driven surface 41 to move the slide core 6 to the retracted position S1.

When the slide core 6 reaches the retracted position S1 , the ball head portion 34 of the ball plunger 35 falls into the concave portion 37 of the convex line portion 9 a of the slide core 6 . Thereby, the slide core 6 is positioned at the retracted position S1. At the same time, the cam portion 8 moves away from the slide core 6 . Then, when the mold reaches the open state, the cam portion 8 reaches the first position K1 and stops. In this state, the molded product 3 is removed from the mold by, for example, pushing out with a pin.

During maintenance, in the state of opening the mold, pull out the sliding core 6 positioned at the retracted position S1 along the guide bar groove 14 of the core guide part 7 in the direction opposite to the molding position S2, thereby releasing the mold. The positioning of the ball plunger 35 can be easily removed from the core guide 7. In addition, the slide core 6 can be easily attached to the core guide part 7 by doing the reverse operation, so that the slide core 6 can be positioned at the receded position S1.

In addition, in the state where the slide core 6 is detached from the core guide portion 7, the head of the bolt 32 can be accessed from the side of the slide core 6, from which the bolt 32 can be easily removed, and then the The core guide part 7 is removed from the movable side plate 30 of the first split mold 1 . Likewise, the core guide 7 can be easily attached.

As described above, according to the present embodiment, as the urging mechanism 16, a mechanism is employed as the urging mechanism 16 in which the protruding portion 18 protrudes from the end surface 17 of the slide core 6 in the second direction D2 and presses the pressing surface of the first split mold 1 . 19, so as to apply force to the sliding core 6.

Therefore, there is no need for a pin that protrudes between the core guide and the slide core as in the force applying mechanism in the prior art, and a recess of the core guide that cooperates with the pin. It is only necessary to provide guide bar grooves 14 on the guide bar 7 for guiding the slide core 6 along the second direction D2. Therefore, it will not cause the above-mentioned pin to loosen and be stuck on the counterbore or the bolt or cause space problems. The counterbore 28 is provided in the bottom surface 15 of the guide bar groove part 14, and the core guide part 7 can be fixed to the 1st part mold 1 by the bolt 32 inserted through this counterbore 28. FIG.

Thus, when the mold is used, the slide core 6 is removed from the core guide 7 in the state of opening the mold, and the bolt 32 is operated from the guide surface side of the core guide 7, whereby the The core guide 7 is attached to the first split mold 1 or the core guide 7 is detached from the first split mold 1 .

In addition, as the part thickness from the bottom surface 15 of the guide groove 14 of the core guide 7 to the first split mold 1, the core guide 7 only needs to have the height of the counterbore 28 and a thickness capable of securing the following strength: . The aforementioned strength refers to the strength capable of holding the head of the bolt housed in the counterbore.

Therefore, it is possible to reduce the size of the core guide portion 7 in the first direction D1 as compared with the case described below. This situation means that when bolts are inserted from the side of the movable side plate 30 of the first parting mold 1 and internal threads screwed with the bolts are provided on the core guide part 7, in order to ensure the strength of the internal threads, it is necessary to adjust to a certain extent. The dimension of the first direction D1 of the core guide part 7 is ensured above.

In addition, even if there are water holes for cooling in the first part mold 1 near the core guide part 7, since the bolts 32 fixing the core guide part 7 are not inserted from the side of the first part mold 1, it is possible to use A configuration that can easily avoid interference between the water hole and the bolt 32 .

In addition, since the protrusion amount of the protrusion 18 is restricted by the protrusion amount limiting portion 23 , the slide core 6 can be detached from the core guide 7 without the protrusion 18 and the spring 24 detaching from the slide core 6 . Therefore, when maintaining the slide core 6 and the like, the protruding portion 18 and the spring 24 are not lost, and maintenance can be easily performed.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this. For example, the molding portion 11 of the slide core 6 may be fixed to the cavity 4 side of the slide core main body 9 by bolts arranged in parallel to the second direction D2. In addition, instead of the ball plunger 35 , a member for positioning the slide core 6 at the retracted position S1 may be provided on the core guide portion 7 .

Claims (4)

1. a kind of slide core device it is characterised in that

Described slide core device possesses slide core, core guide part, cam part and force application mechanism,

Described slide core on first point of mould in first point of mould and second point of mould in a second direction by Drive, described first point of mould and described second point of mould open and close in a first direction, described second Direction is intersected with described first direction,

Described core guide part is fixed on described first point of mould, so that described slide core is along described second Direction mobile mode freely between shaping position and retreating position is led to described slide core To described shaping position is described slide core and described first point of mould and the common shape of described second point of mould Become the position of the die cavity of molding, described retreating position is the position leaving described shaping position,

Described cam part is fixed on described second point of mould, and has following cam surfaces：With described Opening on first direction and close and described cam part is with respect to during described first point of mould relative movement, Described cam surface gives described slide core towards the power on the direction of described shaping position when closing And making described slide core be located at described shaping position, described cam surface gives described slip when open Core towards the power on the direction of described retreating position,

Described force application mechanism is arranged at described slide core, from described shaping position to described retreating position Described slide core is exerted a force,

Described slide core has convex strip portions, and this convex strip portions is prominent and in institute to described core guide part side State second party to upwardly extend,

Described core guide part has the groove in this second direction described convex strip portions being guided The gib block groove portion of shape, this gib block groove portion possesses bottom surface,

Described force application mechanism possesses protuberance and dipper crowding gear,

The end face of the described shaping position side from described slide core for the described protuberance is along described second party To prominent,

Described dipper crowding gear, by being pressed to described protuberance on the face of compressing, is thus kept out of the way towards described Position exerts a force to described slide core, and the described face that compresses is towards described in described first point of mould Face on the direction of retreating position,

The bottom surface of described gib block groove portion is provided for configure the counterbore of the head of bolt,

Described core guide part is fixed on by described first point of mould by described bolt, described bolt is from institute State gib block groove portion side and be inserted in described core guide part via described counterbore.

2. slide core device according to claim 1 it is characterised in that

Described dipper crowding gear possesses pilot hole, overhang limiting unit and force application part,

Described pilot hole is arranged on described slide core and in this second direction to described prominent Portion is guided,

Described overhang limiting unit is arranged on the base end side of described protuberance and the outlet of described pilot hole Side, to limit described protuberance by described overhang limiting unit with mutual abutting of described protuberance Overhang,

Described force application part configures between the base end part of the bottom of described pilot hole and described protuberance, To the projected direction of described protuberance, this protuberance is exerted a force.

3. slide core device according to claim 1 and 2 it is characterised in that

Described core guide part arranges bulb plunger, this bulb plunger is from described gib block groove portion Bottom surface projects, for described slide core is positioned at described retreating position,

Described gib block groove portion is set to the end face of the described retreating position side of described core guide part.

4. slide core device according to claim 1 and 2 it is characterised in that

Described cam part possesses the first actuated by cams face and the second actuated by cams face, this first actuated by cams Face is intersected with described first direction and described second direction, and this second actuated by cams is facing to described The contrary side in one actuated by cams face,

Described slide core possesses the first driven surface and the second driven surface,

When described first point of mould and described second point of mould closure, described first driven surface is subject to from institute State the power in the first actuated by cams face, so that described slide core is located at described shaping position,

When described first point of mould and described second point of mould are opened, described second driven surface is subject to from institute State the power in the second actuated by cams face, thus giving the direction towards described retreating position for the described slide core On power.