JP2523093B2 - Slide core guide unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide core guide unit used for undercutting an injection mold.

[0002]

2. Description of the Related Art As a guide for a slide core used in a conventional undercut process of an injection mold, there is, for example, a structure shown in FIG. To explain this, in the figure, 1 is a movable side mold plate, 2 is a receiving plate, 3 is a slide core, and 4 is an ejector plate. A slide base 5 is fixed to the ejector plate 4, and a shaft holder 9 is slidably fitted on the slide base 5 so as to be movable in a direction orthogonal to the moving direction of the ejector plate 4.

One end of a tilt pin 7 tilted so as to have a tilt angle θ with respect to the vertical direction in the figure is rigidly connected to a shaft holder 9. The inclined pin 7 is slidably engaged with a guide bush 8 press-fitted into an inclined hole provided in the receiving plate 2, and the other end is fixed to the slide core 3.

At the time of demolding, the movable base 1 is moved upward and the ejector plate 4 is synchronously moved in the same direction to raise the slide base 5 and push up the inclined pin 7. The inclined pin 7 slides in the guide bush 8 and pushes up the slide core 3. The rising of the tilt pin 7 also causes the tilt pin 7 to move in parallel to the right in the figure. Therefore, slide core 3
Goes to the right and separates from the undercut U of the product,
The product P can be taken out, and the undercut portion U is not damaged. On the other hand, the shaft holder 9 moves rightward in the slide base 5.

[0005]

According to the above-mentioned conventional example, since the shaft holder 9 and the inclined pin 7 are rigidly connected, the length of the undercut portion U, the moving distance of the ejector plate 4, that is, the ejector stroke. Therefore, it is necessary to uniformly design the tilt angle θ of the tilt pin 7 with respect to the demolding direction. When the tilt angle θ of the tilt pin 7 changes, the rigid connection with the shaft holder 9 changes, so
The tilt pin 7 and the shaft holder 9 must be designed and manufactured each time. There are problems such as.

Also, in the case of standardization, although the tilt pin 7 can be made to have a constant shape with a different total length, it is necessary to prepare a large number of shaft holders 9 having different tilt angles θ of the tilt pin 7. It is expensive, uneconomical, and unmanageable. There is also a problem.

Further, the inclination angle θ of the inclination pin 7 is determined by the receiving plate 2
The angle of intersection of the shaft holder 9 and the inclined pin 7 is 90 ° -θ = δ, which is a complementary angle of θ, which is determined geometrically accurately. Therefore, it is necessary to ensure accurate exercise. However, since the angle of the hole into which the guide bush 8 provided in the receiving plate 2 is fitted varies, and in order to rigidly connect the tilt pin 7 to the shaft holder 9, the end of the tilt pin 7 having a circular cross section is fitted. Even when the inclined pin attaching hole is formed on the shaft holder 9 side, the angle and the dimension between the inclined pin attaching hole and the guide surface of the shaft holder 9 vary. Therefore, if these relational angles are not accurate, the sliding movement of the shaft holder 9 with the slide base 5 and the sliding movement of the inclined pin 7 with the guide bush 8 will result in partial contact.

A slide core guide unit which solves the above-mentioned problems and suggests a versatile injection-molding die which can be used by adapting to the inclination angle even if the inclination angle of the inclination pin is changed is, for example, an actual open shovel. There is a device disclosed in Japanese Patent No. 53-79863. According to the invention, a bearing is provided at a contact portion between the ejector plate and the inclined pin for smooth movement of the inclined pin with respect to the ejector plate. Referring to the drawings of the publication, a bearing is fitted to a shaft end which penetrates the inclined pin and projects to both sides, and the bearing is fitted to a guide of the ejector plate. For this reason, the shaft that supports the tilt pin and the bearing does not rotate only the tilt pin, but the bearing is directly attached to the end of the tilt pin, so that the connecting portion between the tilt pin and the bearing is dimensionally weakened. Further, since the bearing is directly attached to the tilt pin, the hole for fitting the shaft of the bearing of the tilt pin must be machined at a very precise position, and the error causes burrs and steps in the product.

Therefore, the inventor of the present invention has a structure in which the shaft holder 9 is rotatable with respect to the slide base 5 in Japanese Patent Application No. 61-124771 of the present application.
-31912 gazette divisional application Japanese Patent Application No. 3-77620 (see Japanese Utility Model Laid-Open No. 4-98120)), which can deal with the change of the tilt angle, and it is necessary to design and manufacture one point uniformly. There is no, and the operation is smooth and no one-sided contact.

In solving the problems as described above, since the shaft holder 9 is provided on the ejector plate having no space, the height, width and length are restricted. The problem of how to make the inclined pin having a circular cross section and the shaft holder 9 firmly fixed so as not to rotate relative to each other and to be easily machined, the slide core 3 and the ejector plate 4 is left as they are. There is a problem of how to accurately realize the relational dimension of (3) and how to adjust the mounting relational angle δ of the shaft holder and the slide base.

That is, there is a method of using a key groove and a key to firmly fix the tilt pin and the shaft holder so as not to rotate relative to each other. An escape groove for allowing the tool to escape is provided at the bottom of the pin mounting hole, which weakens the shaft holder due to the key groove and the escape groove, and requires a large number of processing steps. Then, the width of the outer shape of the inclined pin mounting portion of the shaft holder is increased. The relational dimension between the slide core and the ejector plate 4 is determined by the connecting portion between the inclined pin and the shaft holder. However, if the shaft holder and the inclined pin are directly connected with a bolt or the like, the adjustment of the relational dimensions between the slide core 3 and the ejector plate 4 requires the rounding up of the inclined pin 7, and the inclined pins 7 must be disassembled and assembled one by one. Man-hours increase significantly. The mounting relation angle δ between the shaft holder and the slide base makes the shaft holder tilt with respect to the slide base, that is, the tilt pin tilts with respect to the slide base, but if this is a pin penetrating across the shaft holder, the shaft holder becomes weak. There is no choice but to enlarge the shaft holder.

The present invention relates to a structure for preventing rotation of the shaft holder and the tilt pin, a structure for adjusting the mounting length of the tilt pin, and a structure in which the shaft holder can be tilted with respect to the slide base. It aims to solve problems.

[0013]

The first invention of the present invention is as follows:
An inclined pin having a circular cross section, one end of which is connected to a slide core, is inserted through and guided through a receiving plate having a hole provided in a direction inclined with respect to the moving direction of the movable side mold plate. The other end of the inclined pin is fixed to a shaft holder that is movably supported by a slide base, and the slide base is guided by a ejector plate in a direction crossing the moving direction of the plate. In the slide core guide unit fixed together, the shaft holder includes an inclined pin mounting hole, an assembly hole penetrating the mounting hole from the outside in the radial direction of the mounting hole, and an opposing surface of the assembly hole. The tilt pin has a knock pin hole formed concentrically with the assembling hole, and the tilt pin whose one end is connected to the slide core has the other end inserted into the tilt pin mounting hole. Projecting oblique pin mounting hole, and an injection mold slide core guide unit, characterized in that it is fixed to the shaft holder by fitted knock pin in the knock pin hole.

According to a second aspect of the present invention, a receiving plate having a hole provided in a direction inclined with respect to the moving direction of the movable side mold plate has a circular cross section whose one end is connected to a slide core. An inclined pin is inserted through the hole and guided, and the other end of the inclined pin is fixed to a shaft holder movably supported by a slide base. The slide base is attached to an ejector plate and the plate. In a slide core guide unit that is fixed by aligning the guide direction in a direction intersecting with the moving direction of the shaft holder, the shaft holder has a tilt pin mounting hole and a bottom portion of the mounting hole with a smaller diameter than the mounting hole. A tilt pin having a small-diameter hole portion penetrating through it, one end of which is connected to the slide core and the other end of which is provided with a female screw, is provided between the shaft holder and the tilt pin. The tilt pin mounting hole of the shaft holder is axially movably fitted to the tilt pin mounting hole via a rotation stopping means, and the small diameter hole portion of the tilt pin mounting hole has a body portion longer than the length of the small diameter hole portion. A bush provided with a flange formed at one end of the body portion and a bolt hole axially penetrating the inner surface of the body portion is disposed so as to fit the body portion, and the slide core and the ejector plate are fitted by the bush. After adjusting the distance between the tilt pin and the bush, the tilt pin is arranged to pass through the bolt hole of the bush, and is fixed to the shaft holder by a bolt that is provided on the end face side of the tilt pin and screwed into a screw. Is a slide core guide unit for an injection mold.

According to a third aspect of the present invention, a receiving plate having a hole formed in a direction inclined with respect to the moving direction of the movable side mold plate has a circular cross section whose one end is connected to the slide core. An inclined pin is inserted through the hole and guided, and the other end of the inclined pin is fixed to a shaft holder movably supported by a slide base. The slide base is attached to an ejector plate and the plate. In a slide core guide unit fixed in a guide direction in a direction intersecting with the moving direction of the shaft, the shaft holder is an assembly in which the shaft pin penetrates the inclined pin mounting hole and the mounting hole from the outside in the radial direction of the mounting hole. The mounting hole and the assembly hole are provided with opposing surfaces of the assembly hole, a knock pin hole formed concentrically with the assembly hole, and a pair of cylindrical projections formed on the outer surface sandwiching the assembly hole, the one end The tilted pin connected to the slide core has its other end inserted into the tilted pin mounting hole and projects into the tilted pin mounting hole, and is fixed to the shaft holder by a knock pin fitted in the knock pin hole. The shaft holder is rotatably supported by the moving member by fitting the cylindrical protrusions into the guide grooves of the slide base which face each other and the moving member movably arranged along the guide grooves. Is a slide core guide unit for an injection molding die.

According to a fourth aspect of the present invention, in the third aspect, the moving member comprises a slide plate having a hole, and the shaft holder has a pair of cylindrical projections fitted in the holes of the slide plate. The slide plate is rotatably supported.

According to another aspect, the moving member is formed of a rolling element, and the shaft holder is rotatably supported by the rolling element by fitting a pair of cylindrical projections to the rolling element.

In a fifth aspect of the present invention, the moving member is a rolling element, and the shaft holder is rotatably supported by the rolling element by fitting a pair of cylindrical projections to the rolling element. Is a slide core guide unit of an injection molding die according to the invention.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings showing its embodiments.

The same parts as those of the conventional example will be described with the same reference numerals.

In the figure, the ejector plate 4 has a slide base 5 fixed to the ejector plate 4, a slide plate 6 slidably fitted to the slide base 5, and a swingable support on the slide plate 6. And a shaft holder 9 that is formed into a sliding portion.

As shown in FIG. 1, the slide bases 5 constituting the sliding portion are opposed to each other along a direction orthogonal to the moving direction of the ejector plate 4 (vertical direction in FIG. 1), and as shown in FIG. A rectangular guide groove 5a is formed on the opposite surface.

As shown in FIG. 7, the slide bases 5 facing each other are arranged such that the ends of the tubular spacers 15 are in contact with the bottoms of the guide grooves 5a near both ends in the longitudinal direction of the slide bases 5, respectively. Since the hexagon socket head cap bolt 16 is provided on the other slide base 5 by passing through the provided bolt hole and the spacer 15, the spacer 15 allows the slide base 5 to have a space and parallelism. It is kept.

The slide base 5 thus formed is fixed to the ejector plate 4.

A slide plate 6 as a moving member is fitted in the guide groove 5a of the slide base 5 so as to be slidable along the guide groove 5a, and the slide plate 6 has a slide plate 6 as shown in FIGS. A hole 6a is formed at the center in the longitudinal direction, and a cut groove 6b is formed at both ends in the longitudinal direction.
Are formed. When the slide plate 6 moves along the guide groove 5a of the slide base 5, the cut grooves 6b are fitted in the spacers 15 provided at both ends of the slide base 5, and the plate 6 is set at the movement limit position. The spacer 15 is not touched.

The shaft holder 9 is, as shown in FIG.
A cylindrical inclined pin mounting hole 9b and the mounting hole 9b are formed on the inner surface thereof.
Assembly hole 9 that penetrates the mounting hole 9b from the outer surface in the radial direction of the
c and a knock pin hole 9d that is concentric with the assembly hole 9c on the opposite surface of the assembly hole 9c, and a pair of cylindrical projections 9a are provided on the outer surface sandwiching the assembly hole 9c as shown in FIGS. Be prepared for one. The shaft holder 9 is supported by the slide plate 6 so that the cylindrical projection 9a is fitted into the hole 6a formed in the slide plate 6 and is swingable around the hole 6a.

Knock pin hole 9d of the shaft holder 9
A knock pin 11 having a length longer than the depth of the knock pin hole is press-fitted and fixed by projecting a part of the knock pin 11 toward the inclined pin mounting hole 9b. A hole 9e is provided at the bottom of the knock pin hole 9b for the purpose of preventing air from being enclosed when the knock pin is driven and for inserting a knock pin protruding rod when the knock pin 11 is disassembled.

At the other end of the inclined pin 7 whose one end is connected to the slide core 3 and which has a circular cross section, a notch 7a is formed which is a plane parallel to the axial direction and is formed by omitting the circular portion. A female screw 7c is provided on the end surface 7b on the side where the cutout portion 7a is formed. The inclined pin 7 is arranged such that its end portion is inserted into the inclined pin mounting hole 9b of the shaft holder 9 and the end cutout portion 7a is engaged with a knock pin 11 protruding toward the inclined pin mounting hole side. The tilt pin 7 is fixed to the shaft holder so as not to rotate.

The shaft holder 9 has a tilt pin mounting hole 9b provided with a bush insertion stepped hole 12 continuous with the mounting hole 9b. The stepped hole 12 is the mounting hole 9b.
To the small diameter hole portion 12b and the step portion 1 in the small diameter hole portion 12b.
2c and a large diameter hole portion 12a that expands in diameter. The stepped hole 12 has a body portion 13b longer than the length of the small diameter hole portion 12b and a flange portion 1 formed at one end of the body portion 13b.
A bush 13 having bolt holes on the inner surfaces of 3a and the body portion 13b inserts the body portion 13b into the small-diameter hole portion 12b and projects its end portion toward the inclined pin attachment hole 9b side and into the attachment hole 9b. The end face 7b of the tilted pin 7 that is abutted,
The flange portion 13a is arranged so as to be seated on the step portion 12c.

A bolt 14 is inserted into the bush 13 provided in the stepped hole 12 through a bolt hole in the inner surface of the body portion 13b of the bush. The bolt 14 is attached to the female screw 7c on the end surface of the inclined pin 7. The inclined pin 7 is fixed to the shaft holder 9 by screwing.

When the tilt pin 7 is fixed to the shaft holder 9, the bush 13 is interposed for the following purpose.

That is, if the distance between the ejector plate 4 and the slide core 3 in the moving direction of the ejector plate 4 is not accurate, a burr or a step will occur on the product P, but the end of the bush body portion 13b during assembly. The portion between the ejector plate 4 and the slide core 3 can be accurately maintained by cutting up the portion and adjusting the amount of protrusion of the end of the bush 13 into the inclined pin mounting hole 9b. This is for the purpose of preventing burrs and steps from being generated on the product P. Therefore, this bush 13
Acts as a length adjustment bush.

The operation of the slide core guide unit having the above structure is as follows.

At the time of demolding, the movable mold plate 1 and the ejector plate 4 rise from the state of FIG. 1 as shown in FIG. 2, and the slide base 5 fixed to the ejector plate 4,
The slide plate 6 fitted to the slide base 5 and the shaft holder 9 supported by the slide plate 6 also rise.

As the shaft holder 9 rises, the tilt pin 7 fixed to the shaft holder 9 is pushed up. Since the inclined pin 7 is guided by the guide bush 8 press-fitted into the hole of the receiving plate 2, a horizontal displacement component is given by the upward displacement component given by the ejector plate 4, and this horizontal displacement is given. The shaft holder 9, the slide plate 6, and the slide core 3 are translated in the right direction by the component. As shown in FIG. 2, the slide plate 6 moves right along the guide groove 5a of the slide base 5, and at the same time, the slide core 3 also moves right and separates from the undercut portion U.

In such an operation, even if there is an error in the inclination angle θ of the inclination pin 7 with respect to a predetermined angle, the shaft holder 9 is provided around the hole 6a of the slide plate 6 even in the cylindrical projection 9a. Since it is supported so as to be swingable, there is no one-sided contact or sticking to the sliding between the slide base 5 and the slide plate 6 and the sliding between the inclined pin 7 and the guide bush. .

Further, since the tilt pin 7 is prevented from rotating by the knock pin 11 in the tilt pin mounting hole 9b of the shaft holder 9, the tilt pin 7 rotates, in other words, the slide core 3 connected to the tilt pin 7. Since the rotation is blocked, the product P caused by the rotation of the slide core 3 is not deformed.

FIG. 9 is a longitudinal sectional view of another embodiment, and FIG. 10 is a partial perspective view of FIG. The shaft holder 9 and the slide base 5 are the same as in the previous embodiment. The inner ring of the needle roller bearing 17 is fitted and fixed to the protrusion 9a of the shaft holder as a moving member, and the outer ring of the needle roller bearing 17 is rotatably fitted in the guide groove 5a of the slide base. When the ejector plate 4 is lifted during demolding, the shaft holder 9 moves in the guide groove 5a of the slide base 5 as the needle roller bearing 17 rolls. Therefore, the shaft holder 9 as a sliding member can be lightly moved in the slide base 5 and the tilt pin 7 can be swung around the projection 9a.
It is versatile for selecting the mounting angle.

In the embodiment, the body end of the length adjusting bush is directly cut up to adjust the length of the tilt pin. However, a spacer is interposed between the body end and the end surface of the tilt pin to adjust the length of the spacer. The thickness may be adjusted.

[0040]

As described above, the present invention is as follows. (1) The shaft holder has an inclined pin mounting hole, an assembly hole penetrating the mounting hole from the outside in the radial direction of the mounting hole, and an opposing surface of the assembly hole. The tilt pin having a knock pin hole formed concentrically with the assembling hole has one end connected to the slide core, and the other end is inserted into the tilt pin mounting hole and protrudes into the tilt pin mounting hole. Moreover, since it is fixed to the shaft holder by the knock pin fitted in the knock pin hole, the rotation of the slide core connected to the inclined pin is prevented, and the product is not deformed. It will not loosen as it would with a set screw. Also, when locking with a key conventionally, a diameter expansion part is provided at the bottom of the inclined pin mounting hole of the stop of the shaft holder to form an escape groove for key processing, but this weakens the shaft holder, but this The invention does not have this.
The tilt pin mounting hole can be made shallow, which allows the height of the shaft holder to be reduced. (2) The shaft holder is provided with an inclined pin mounting hole and a small diameter hole portion having a diameter smaller than that of the mounting hole and penetrating the mounting hole, one end of which is connected to the slide core and the other end of which is provided. An inclined pin having an internal thread on the end face side of is fitted in an inclined pin mounting hole of the shaft holder so as to be movable in the axial direction via a rotation preventing means provided between the shaft holder and the inclined pin, The small-diameter hole portion of the inclined pin mounting hole is provided with a body portion longer than the length of the small-diameter hole portion, a flange formed at one end of the body portion, and a bolt hole axially penetrating the inner surface of the body portion. A bush is arranged by fitting the body portion, and after adjusting the distance between the slide core and the ejector plate by the bush, the tilt pin is arranged through the bolt hole of the bush. Because it is provided on the end face side of the pin Since it is fixed to the shaft holder by bolts that are screwed together, the end face of the bush body and the end face of the inclined pin are in pressure contact, and the bush can be disassembled to scrape the end face of the inclined portion to remove the inclined pin. The positional relationship between the slide core and the shaft holder can be adjusted. (3) The shaft holder includes an inclined pin mounting hole, an assembly hole that penetrates the mounting hole from the outside in the radial direction of the mounting hole, and a knock pin hole that is formed concentrically with the assembly hole on a surface facing the assembly hole. And a pair of cylindrical projections formed on the outer surface sandwiching the assembling hole, the tilt pin having one end connected to the slide core has the other end inserted into the tilt pin mounting hole, and the tilt pin. The shaft holder is fixed to the shaft holder by a knock pin that protrudes into the mounting hole and is fitted in the knock pin hole, and the shaft holder can move its cylindrical protrusion along the guide groove to the opposite guide groove of the slide base. Since it is fitted to the moving member arranged in the above and is rotatably supported by the moving member, the tilting of the tilting pin can be coped with. Since the protrusion formed on the shaft holder is not an axis penetrating the shaft holder, it can be formed anywhere on both sides of the shaft holder regardless of the tilt pin that fits with the shaft holder and other internal configurations of the shaft holder. Therefore, the center of the protrusion can be made to cross the inclined pin, and in the transmission of the force between the ejector plate and the inclined pin, an unbalanced load does not occur and a smooth motion can be transmitted.
Further, when the moving member is a rolling element, the running of the rolling element can be stabilized by slightly shifting the center of the inclined pin and the center of the protrusion.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an entire slide core guide unit of the present invention.

FIG. 2 is a vertical cross-sectional view showing an operating state of the slide core guide unit of the present invention.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is an exploded perspective view showing a sliding portion.

FIG. 6 is a sectional view taken along the line CC of FIG. 3;

FIG. 7 is a plan view showing a partial cross section of FIG.

FIG. 8 is a perspective assembly view showing a sliding part and a slide base.

FIG. 9 is a vertical cross-sectional view of another embodiment.

FIG. 10 is a partially exploded perspective view of FIG.

FIG. 11 is a vertical sectional view of a conventional example.

[Explanation of symbols]

 1 movable mold plate 2 receiving plate 3 slide core 4 ejector plate 5 slide base 5a guide groove 6 slide plate 6a hole 7 tilting pin 7a notch 7c female screw 9 shaft holder 9a cylindrical protrusion 9b tilting pin mounting hole 9c for assembly Hole 9d Knock pin hole 11 Knock pin 12 Bush insertion step hole 13 Bush 14 Bolt

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 53-79863 (JP, U) Actual breaks 57-108926 (JP, U)

Claims (5)

(57) [Claims] 1. A circular cross-section whose one end is connected to a slide core (3) in a receiving plate (2) having a hole provided in a direction inclined with respect to the moving direction of the movable side mold plate (1). A slanting pin (7) is formed so as to be inserted through the hole and guided, and the other end of the slanting pin (7) has a slide base (5).
The slide base (5) is fixed to a shaft holder (9) that is movably supported by the slide base (5) so that the guide direction is aligned with the ejector plate (4) in a direction intersecting with the moving direction of the plate (4). In the slide core guide unit which is fixed by fixing the shaft holder (9), the shaft holder (9) is attached to the inclined pin mounting hole (9b) and the mounting hole (9b) from outside in the radial direction.
Assembly hole (9c) penetrating b) and the assembly hole (9c)
Has a knock pin hole (9d) formed concentrically with the assembling hole (9c), and the inclined pin (7) having one end connected to the slide core (3) has the other end at the other end. It is inserted into the tilt pin mounting hole (9b) and protrudes into the tilt pin mounting hole (9b), and the knock pin hole (9b).
A slide core guide unit for an injection molding die, characterized in that the slide core guide unit is fixed to the shaft holder (9) by a knock pin (11) fitted to (d). 2. A receiving plate (2) having a hole provided in a direction inclined with respect to the moving direction of the movable side mold plate (1) has a circular cross section whose one end is connected to a slide core (3). A slanting pin (7) is formed so as to be inserted through the hole and guided, and the other end of the slanting pin (7) has a slide base (5).
The slide base (5) is fixed to a shaft holder (9) that is movably supported by the slide base (5) so that the guide direction is aligned with the ejector plate (4) in a direction intersecting with the moving direction of the plate (4). In the slide core guide unit, the shaft holder (9) has a smaller diameter than the mounting hole (9b) at the bottom of the inclined pin mounting hole (9b) and the mounting hole (9b). A small-diameter hole portion (12b) penetrating to the slide core (1), one end of which is connected to the slide core (3),
The tilt pin (7) having the female screw (7c) on the end face (7b) side of the other end is the shaft holder (9) and the tilt pin (7).
It is fitted into the tilt pin mounting hole (9b) of the shaft holder (9) so as to be movable in the axial direction via a detent means provided between the shaft holder (9) and the small diameter hole of the tilt pin mounting hole (9b). The portion (12b) has a body portion (13b) longer than the length of the small diameter hole portion (12b), a flange (13a) formed at one end of the body portion (13b), and an inner surface of the body portion (13b). A bush (13) having a bolt hole penetrating in the axial direction is arranged by fitting the body portion (13b), and the bush (13) connects the slide core (3) and the ejector plate (4). After adjusting the distance, the inclined pin (7) is arranged by inserting it through the bolt hole of the bush (13), and the screw (7) is provided on the end face (7b) side of the inclined pin (7).
A slide core guide unit for an injection molding die, which is fixed to the shaft holder (9) by a bolt (14) screwed to c). 3. A circular cross-section whose one end is connected to a slide core (3) in a receiving plate (2) provided with holes provided in a direction inclined with respect to the moving direction of the movable side mold plate (1). A slanting pin (7) is formed so as to be inserted through the hole and guided, and the other end of the slanting pin (7) has a slide base (5).
The slide base (5) is fixed to a shaft holder (9) that is movably supported by the slide base (5) so that the guide direction is aligned with the ejector plate (4) in a direction intersecting with the moving direction of the plate (4). In the slide core guide unit which is fixed by fixing the shaft holder (9), the shaft holder (9) is attached to the inclined pin mounting hole (9b) and the mounting hole (9b) from outside in the radial direction.
Assembly hole (9c) penetrating b) and the assembly hole (9c)
Has a knock pin hole (9d) formed concentrically with the assembly hole (9c) and a pair of cylindrical projections (9a) formed on the outer surface sandwiching the assembly hole (9c). The inclined pin (7) having one end connected to the slide core (3) has the other end inserted into the inclined pin attaching hole (9b) and protrudes into the inclined pin attaching hole (9b), and a knock pin hole ( Knock pin (11) fitted to 9d)
Is fixed to the shaft holder (9) by means of the cylindrical protrusion (9a) of the shaft holder (9), which is opposed to the guide grooves (5a) (5a) of the slide base (5).
A slide core guide unit of an injection molding die, which is fitted to a moving member movably arranged along the guide groove in a) and is rotatably supported by the moving member. 4. The moving member comprises a slide plate (6) having a hole (6a), said shaft holder (9).
The injection mold according to claim 3, wherein the pair of cylindrical projections (9a) are fitted into the holes (6a) of the slide plate (6) and are rotatably supported by the slide plate (6). Slide core guide unit. 5. The moving member comprises a rolling element (17), and the shaft holder (9) has a pair of cylindrical projections (9a).
The slide core guide unit for an injection molding die according to claim 3, wherein the sliding core guide unit is fitted to the rolling element (17) and is rotatably supported by the rolling element (17).