JP2003200247A - Displacement device and method for molding die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide molding dies and a displacement method, in which general purpose dies (general section) and special purpose dies (special section) are efficiently displaced with each other with a simple structure. <P>SOLUTION: The molding dies are composed of fixed dies 11 and movable dies 12, each possessing the common general section A held by platens 2, 3, the special section for forming cavities, attaching/detaching mechanisms 31, 32 for holding the special section detachably from the general section, and a displacement device. The displacement device is equipped with a displacement means for the special section, a displacement means for the general section, and a transporting means 251 which is common for both displacement means. The displacement means for the special section is provided with a base plate to be placed on the transporting means 251, while that of the general section is provided with a support plate 233 to be placed on the transporting means 251 and to support the general section A at a prescribed height. For the purpose of inserting the base plate or the support plate 233 under the general section A, a space tb is formed between the lower part of the general section A and the transporting means 251. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die and a method for changing the stage of the molding die, more specifically, a die casting,
A molding die used for molding various plastics such as low pressure casting, gravity casting, injection molding, blow molding, etc. into a molded article of a predetermined shape in the cavity,
The present invention relates to a step changing method for changing the molding die.

[0002]

2. Description of the Related Art For example, in die casting, a high temperature molten metal is filled into a mold at a high speed and a high pressure, so that the mold is heavily worn and must be replaced frequently.
Further, in recent production lines, high-mix low-volume production has become common regardless of fields such as casting and injection molding, and the cycle for exchanging molds has become shorter accordingly.

Therefore, in recent years, the fixed mold and the movable mold which compose the mold are divided into a dedicated part for forming a cavity and a common general-purpose part, and only the dedicated part is replaced. Are considered (for example, Japanese Patent Laid-Open No.
-70653, JP 9-122871, JP 1-271
No. 213). Further, Japanese Patent Laid-Open No. 6-190531 discloses that only a part (core) of the dedicated part is replaced with the general-purpose part left in the molding machine. In this publication, the dedicated portion is fastened to the general-purpose portion from the front side by bolts. Then, in the molding die thus divided and configured, it may be necessary to change the general-purpose portion.

Further, in the case of a general molding die that has been conventionally used, in order to perform the stage change efficiently and safely in a short time, the fixed die and the movable die are integrated to form a molding machine. It is carried between the inside and outside. In such a molding die, a detachable integrated mechanism is provided on the abutting surfaces of the fixed die and the movable die. Since the opening and closing direction of the movable mold with respect to the fixed mold is constant, the integrated mechanisms provided on both abutting surfaces are easily aligned and removed.

By the way, among these molding dies,
In order to mold an undercut portion of a molded product, there is one having a slide core that is opened and closed in a direction different from the mold opening and closing direction of the movable mold with respect to the fixed mold. The slide core is generally provided on the surface of the movable mold that faces the fixed mold, and is connected to the operating portion of the actuator for opening and closing the mold by bolts or the like.

[0006]

However, according to the conventional stage changing method for exchanging only the above-mentioned dedicated portion, the general-purpose portion is detached from the molding machine for each general-purpose portion after the dedicated portion is connected to the general-purpose portion. Is taken out of the molding machine to replace the dedicated part.In this case, the troublesome work of attaching and detaching the general-purpose part from the molding machine still remains, especially in the case of die casting mold, There is a problem in that complicated cooling pipes for cooling are also required to be attached and detached, and the total stage change time is not shortened as much as desired.
In addition, for example, when a die-cast molded product having a large and complicated structure such as a cylinder block is to be obtained, a slide core is required, so that the entire die has a large weight (for example, 19
6kN (about 20 tons) and large size (for example 2m on a side)
The problem is that the attachment and detachment from the molding machine is extremely troublesome as described above, and it is also necessary to insert and remove the tie bar between the fixed plate and the movable plate, and the effect of shortening the stage change time is extremely small. was there. In addition,
In the conventional technology disclosed in Japanese Patent No. 6-190531,
Since the dedicated part is fastened from the front side to the general-purpose part with bolts, it cannot be applied to the dedicated part that forms the cavity on the front side, and in addition, the fastening work in the molding machine with limited space However, there was a problem such as poor workability. In addition, in any of the conventional techniques, there has been no molding die configured so that the dedicated portion and the general-purpose portion can be efficiently changed in stages.

The present invention has been made in view of the above problems, and has a simple structure when the molding die is divided into a general-purpose part that is common and a dedicated part that forms a cavity. An object of the present invention is to provide a molding die and a method for changing the stage thereof, which can efficiently change the stages of the general-purpose part and the dedicated part.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the invention relating to the mold die changing device of the first aspect forms a common general-purpose portion held by a platen and a cavity. What is claimed is: 1. A stage changing device for a molding die comprising a dedicated part and a detaching mechanism for detachably holding the dedicated part to a general-purpose part, wherein the stage changing device comprises a stage changing means for the dedicated part,
The general-purpose section has a step changing means and a conveying means common to both the step changing means, and the special-purpose step changing means has a base plate placed on the conveying means. The replacement unit has a support plate that is placed on the transfer unit and supports the general-purpose unit at a height that allows the platen to be held, and forms a gap below the general-purpose unit into which the base plate or the support plate can be inserted. It is characterized by having done. In order to solve the above-mentioned problems, the invention relating to the mold changing device for a molding die according to claim 2 is the invention according to claim 1, wherein the dedicated part of the molding mold includes a slide core, and the general-purpose part is A shape that is provided with an actuator that drives the slide core in the mold opening / closing direction, and when the actuator is arranged so as to project toward the conveying means, avoids this without the support plate interfering with the actuator. It is characterized by being molded into. In order to solve the above-mentioned problems, an invention according to a third aspect of the present invention is a general-purpose part and a platen which are fitted to each other by a general purpose. The present invention is characterized in that a positioning mechanism for positioning the part with respect to the platen is provided at a position where the part is separated from the support plate placed on the conveying means. Further, in order to solve the above-mentioned problems, the invention relating to the method for changing the stage of the molding die of claim 4 is to be fitted between the molding die and the platen by closing the mold so that they are fitted to the platen. And a supporting plate which has a positioning mechanism for positioning the molding die at a predetermined position and which is mounted on the conveying means to support the molding die and is moved between the inside and outside of the molding machine. Is configured to support the molding die at a height at which the positioning mechanism of the molding die and the platen can be fitted, and the molding die is separated from the support plate when the positioning mechanisms are fitted to each other. A method of changing the molding die, comprising the steps of: supporting the molding die on a supporting plate placed on the conveying means, moving the supporting plate into the molding machine by the conveying means, and closing the die. Then mold and plastic Fitting the positioning mechanism and emissions by separating the mold from the support plate, then, it is characterized in that moving the support plate to the mold outside the transport means.

In the invention relating to the mold changing device of the molding die of claim 1, when the dedicated part is changed, the movable platen is separated from the fixed platen of the molding machine,
The base plate of the stage changing means of the dedicated section is placed on the transfer means, and the base plate is moved between the fixed mold and the movable mold by the common transfer means. A new dedicated part used after the stage change is held in the stage change means of the dedicated part. A gap is formed between the common carrier and each general-purpose part so that the base plate or the support plate can be inserted below the general-purpose part. For this reason, the base plate is inserted below the general-purpose part of the fixed mold and the movable mold, and the step changing means of the dedicated part provided on the base plate is surely advanced between the fixed mold and the general-purpose part of the movable mold. Be moved.
Then, each attachment / detachment mechanism is released, each dedicated portion is detached from each general-purpose portion, and the dedicated portion is held in the dedicated portion changer means after that, and then the dedicated portion is changed. Each new dedicated part used after the stage change held in the means is put into each general-purpose part and held by each attaching / detaching mechanism. After that, when the base plate is moved backward from between the fixed mold and the movable mold by the transfer means, the dedicated portion used until then is carried out of the molding machine. On the other hand, when performing the stage change of the general-purpose unit, it is assumed that all or a part of each dedicated unit is detached from each general-purpose unit, or that all or a part of each dedicated unit is held in each general-purpose unit. ,Also,
The molding machine is in a mold open state in which the movable platen is separated from the fixed platen. A support plate having a predetermined thickness of the stage changing means of the general-purpose part is placed on the common conveying means to advance and move between the fixed platen and the movable platen, and the movable platen is brought close to the fixed platen, and The general-purpose parts of are abutted and matched. In this state, the general-purpose parts are separated from the platens, and then the mold is opened to support the general-purpose parts on the support plate. Since a gap is formed between the common conveying means and each general-purpose part so that the base plate or the support plate can be inserted below the general-purpose part, the general parts of the fixed mold and the movable mold can be inserted. The support plate is surely inserted below, and the general-purpose parts separated from the platens are supported by the support plate. Next, the supporting plate is moved backward from between the fixed platen and the movable platen by the common conveying means, and the general-purpose portion in the matched state is carried out of the molding machine. Then, a new general-purpose part to be used after changing the stage is supported on the support plate at a predetermined height in a matched state, and the support plate is advanced and moved between the fixed platen and the movable platen by a common conveying means, Next, the movable platen is brought close to the fixed platen, and the general-purpose portion is abutted against both platens and attached. Since the dedicated part and the general-purpose part can be respectively transferred between the inside and outside of the molding machine by the common transfer means, the structure of the molding machine can be simplified and the molding die can be easily changed. , The manufacturing cost is reduced.

According to a second aspect of the invention, in the invention according to the first aspect, the dedicated portion of the molding die includes a slide core, and the general-purpose portion includes an actuator for driving the slide core in the die opening / closing direction. If the support plate is arranged so as to project toward the transport means, the support plate is shaped so as to avoid it without interfering with the actuator, so that the general-purpose part is stable on the support plate. Then, it is supported at a predetermined height. According to a third aspect of the present invention, in the invention according to the first or second aspect, when the general-purpose portion in a mold-matched state is carried in between the platens, the general-purpose portion uses the positioning mechanism of the general-purpose portion by the support plate. It is supported at a height that can be fitted to. When both platens are close to each other and the mold is closed and abutted against the general-purpose part, the positioning mechanism of the general-purpose part is fitted to the positioning mechanism provided on the platen so that the general-purpose part is separated from the support plate. Then, the platen is positioned at a predetermined height with respect to the platen. Therefore, after the general-purpose portion is attached to the platen, only the support plate is reliably retracted outside the molding machine by the common conveying means.

Further, in the invention relating to the method for changing the stage of the molding die of claim 4, the molding die is supported by the support plate placed on the conveying means, and the supporting plate is moved into the molding machine by the conveying means. Then, the molding die is arranged between the platens in a state in which the positioning mechanism is supported at a height capable of fitting with the positioning mechanism of the platen. When the platen is brought close to and both positioning mechanisms provided between the platen and the molding die are fitted to each other, the molding die is separated from the support plate. Therefore, the support plate is reliably retracted outside the molding machine by the transfer means. If the molding die is composed of a common general-purpose part that is held by the platen and a dedicated part that forms a cavity, carry in a new general-purpose part that will be used after changing stages into the molding machine. When mounting with a support plate having a predetermined thickness mounted on a common conveying means, a new general-purpose part is mounted on the support plate, and a positioning mechanism for the molding die and the platen is installed. The supporting plate is supported at a predetermined height such that it can be fitted, and the supporting plate supporting the molding die is conveyed into the molding machine by the conveying means. Next, when the platen is brought close to and the positioning mechanism of the molding die and the platen is fitted to position the molding die at a predetermined height with respect to the platen, the molding die is separated from the support plate. . Therefore, after the molding die is attached to the platen, only the support plate is reliably retracted to the outside of the molding machine by the conveying means. On the other hand, when removing the general-purpose part that has been used until then and carrying it out of the molding machine,
Each dedicated part is separated from each general-purpose part, or all or part of each dedicated part is held in each general-purpose part, and the movable platen is separated from the fixed platen of the molding machine to open the mold. State. A support plate having a predetermined thickness is placed on a common conveyance means to move forward between the fixed platen and the movable platen, and the movable platen is brought close to the fixed platen to close the mold to collide the general-purpose parts with each other. The molds are combined and matched with each other, and the support plate is inserted below the general-purpose portion by the transporting means. In this state, when the general-purpose parts are separated from the platens and the platen is opened, the general-purpose parts are supported by the support plate. Then, the supporting plate is moved backward by the conveying means, and the general-purpose portion in the formed state is carried out of the molding machine.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION First, an embodiment of a stage changing device for a molding die according to the present invention will be described in detail with reference to FIGS. In this embodiment, the molding machine is a die casting machine, and the molding die will be described as a die casting molding die, but the present invention is not limited to this embodiment, and low pressure Various castings such as casting and gravity casting, and injection molding, blow molding, and the like can be applied to a molding die used for molding a plasticized molding material in a cavity to form a molded product having a predetermined shape.
The same reference numerals indicate the same parts or corresponding parts.

The molding die to which the present invention is applied is roughly
The fixed mold 11 and the movable mold 12 are the platen 2,
The generalized general-purpose part A held in 3 and this general-purpose part A
And a detachable mechanism 31 and 3 for detachably retaining the dedicated portion B on the general-purpose portion A.
2 and 104 are provided. And the stage changing device of the present invention
Reference numeral 200 is a dedicated section changing means 201 and a general-purpose section changing means
231, and a conveying means 251 common to both the stage changing means 201, 231. The special-purpose stage changing means 201 has a base plate 253 placed on the carrying means 251, and the general-purpose section changing means 231 is placed on the carrying means 251 so that the general-purpose section A has a predetermined height. It has a support plate 233 for supporting the.
A gap tb is formed between the lower part of the general-purpose part A and the transport means 251 so that at least one of the base plate 253 and the support plate 233 can be inserted below the general-purpose part A. Further, the molding die in this embodiment is a movable die with respect to the fixed die 11.
A plurality of sets of slides 14 that are opened and closed in a direction different from the die opening and closing direction of 12 (that is, intersecting the die opening and closing direction of the movable die 12 with respect to the fixed die 11) are provided. Slide 14
Includes a slide core 23 as a dedicated section B, a slide holder 22 as a general-purpose section A, and an actuator 70 for moving the slide core 23 and the slide holder 22 in the mold opening / closing direction. Some of the actuators 70 are arranged so as to project downward, and the support plate 233 of the step changing means 231 of the general-purpose part A has a shape that avoids such actuators 70 without interfering with them. In addition, it is formed in such a shape that it can be placed on the common conveying means 251. Further, the general-purpose part A and at least one of the platens 2 and 3 respectively have molding material introducing parts 26 and 27 as positioning mechanisms for positioning the general-purpose part A with respect to the platens 2 and 3 by fitting. ing. The molding material introducing portions 26 and 27 communicate with each other when fitted, and are set at positions where the general-purpose portion A is separated from the support plate 233 placed on the transporting means 251.

First, the structure of the die casting machine 1 in this embodiment to which the die changing device of the present invention is applied will be described. FIG. 1 is a perspective view of the entire die casting machine according to this embodiment. The die casting machine 1 has a fixed platen 2 for mounting a fixed mold 11 and a movable platen 3 for mounting a movable mold 12. The fixed platen 2 is arranged at one end on the pedestal 4, and the fixed base 5 is arranged at the other end on the pedestal 4. Tie bars 6 having extremely high rigidity are bridged in the vicinity of each corner between the fixed platen 3 and the fixed base 5, and the movable platen 3 is separated from the fixed platen 2 in the middle of the tie bar 6. -It is slidably inserted so that it approaches. The molding die includes a fixed die 11 attached to the fixed platen 2, a movable die 12 attached to the movable platen 3 of the machine 1, an extruding means 13 attached to the movable die 12 and a plurality of units (4 units). The slide 14 of FIG. By moving the movable platen 3 close to the fixed platen 2, the movable mold 12 can be brought into close contact with the fixed mold 11 to be in a mold closed state, and by separating the movable platen 3 from the fixed platen 2, the movable platen 3 can be moved. The mold 12 can be separated from the fixed mold 11 to be in a mold open state. The movable platen 3 is driven by the fixed base 5
It is performed by the mold clamping cylinder 7 provided in the. An injection cylinder 8 for injecting molten metal as a molding material into the cavity 100 is provided on the back side of the stationary platen 2.

Each of the fixed mold 11, the movable mold 12, the pushing means 13 and the slide 14 described above is divided into a common general-purpose part A and a dedicated part B forming the cavity 100. More specifically, the fixed mold 11 includes the fixed-side main mold 15 as the general-purpose part A and the fixed-side insert 16 as the dedicated part B, and the movable mold 12 is the movable-side main mold 17 as the general-purpose part A. And the movable side insert 18 as the dedicated part B, the pushing means 13 includes the main mold side mechanism 55 as the common general-purpose part A, and the insertion part as the dedicated part B provided for each movable side insert 18. From the child side mechanism 56, the slide 14 is a slide holder as the general-purpose part A.
22 and a slide core 23 as a dedicated section B, respectively. Further, these dedicated parts B are automatically attached / detached to / from the corresponding general-purpose parts A by the attaching / detaching mechanisms 31, 32, 104, and the exclusive parts B are automatically integrated by the connecting mechanism 115. The general-purpose parts A are configured so that when they are abutted against each other by the alignment mechanism 116, they are matched to each other into a block.

Each of the fixed mold 11 and the movable mold 12 has a concave portion 2 provided in a fixed main mold 15 and a movable main mold 17, respectively.
Fit the fixed side insert 16 and movable side insert 18 into 4, 25,
In this state, the fixed-side nest 16 and the movable-side nest 18 are separated by the attachment / detachment mechanisms 31 and 32 provided between the bottoms of the recesses 24 and 25 and the back side of the fixed-side nest 16 and the movable-side nest 18. The structure is such that the main mold 15 on the fixed side and the main mold 17 on the movable side are detachably held.
Further, around the recess 24 of the fixed-side main mold 15, there is formed a groove 24a having an inclination that engages with the shoulder portion 22a of the slide holder 22 to generate a mold clamping force when the mold is closed.
Further, as shown in FIG. 26, the movable side insert 18 of the movable mold 12 is
In the case of this embodiment, the storage groove 101 for slidably holding the four slide cores 23 is the surface of the fixed mold 11 side, and the storage groove 101 is approximately from the center to each side. It is formed in four cross-shaped or radial shapes.

The fixed side insert 16 and the movable side insert 18 are fixed side main molds.
15, the attachment / detachment mechanism for attaching / detaching to / from the movable side main mold 17 is composed of clamp devices 31 and 32 here. The clamp devices 31 and 32 include T-shaped clampers 33 and 34 extending from the fixed-side main mold 15 and the movable-side main mold 17 side, respectively.
6, T-shaped slots 35, 36 provided on the back surface of the movable-side insert 18
And the fixed side insert 16 and the movable side insert 18 are drawn into the recesses 24 and 25 of the fixed side main mold 15 and the movable side main mold 17, respectively. Driving means for driving the T-shaped clampers 33, 34
37 and 38 are composed of a cylinder (retracting cylinder) 39 that moves the T-shaped clampers 33 and 34 in the axial direction, and a rotary actuator 40 that rotates the T-shaped clampers 33 and 34 around their axes. The rotary actuator 40 is built in the corresponding fixed-side main mold 15 and movable-side main mold 17. These T-shaped clampers 33, 34 cylinders 3
A plurality of clamping devices 31, 32 including 9, 40 and rotary actuators 41, 42 can be provided for the fixed mold 11 and the movable mold 12, and in particular, for the clamping device 32 on the movable mold 12 side. As will be described later, since a large pulling force is required, four units are provided here.

Cylinder 39 constituting the driving means 37, 38
The basic structure of the rotary actuator 40 is substantially the same on the fixed mold 11 side and the movable mold 12 side, and the driving means 37 on the fixed mold 11 side will be described as an example with reference to FIGS. 9 and 10. . In FIGS. 9 and 10, 43 is a piston slidably arranged in the cylinder 39, and the base end portion of the T-shaped clamper 33 is slidable in a shaft hole 44 formed in the piston 43. It is movably inserted. The T-shaped clamper 33 has its base end portion fitted to a taper portion 44a formed at one end side of the shaft hole 44, so that movement of the T-shaped clamper 33 in the left direction (pushing direction) with respect to the piston 43 is restricted. It is a ring-shaped stopper plate that is bolted to its base end
By abutting 45 on the stepped portion 44b formed on the other end side of the shaft hole 44, the movement of the piston 43 in the right direction (removal direction) in FIG. 9 is restricted. That is, the T-shaped clamper 33 is rotatably and immovably connected to the piston 43. A shaft hole 46 having a predetermined depth is formed at the base end of the T-shaped clamper 33.
An extended end of a rotary shaft 47 extending from the rotating mechanism 41 into the cylinder 39 is inserted into the cylinder 46. This rotating shaft 47
The extended end portion of the ring-shaped stopper plate 45 into the cylinder 39 is
And the T-shaped clamper 33 are connected to the rotary shaft 47 so as not to be rotatable relative to each other and to be movable relative to each other.

On the other hand, the rotary actuator 40 constituting the driving means 37 is arranged in a thick end plate 49 covered by the clamping cylinder 39. The end plate 49 is formed with a recess 50 for accommodating the rotary shaft 47.
At the bottom of the rotary shaft 47, there is bolted a holding plate 41 that locks a flange 47a provided at an axially intermediate portion of the rotary shaft 47 to prevent the rotary shaft 47 from coming off the cylinder 39. Also,
In this recess 50, a pinion 42 is non-rotatably coupled to the base end of the rotary shaft 47 by using a key 57, and the pinion 42 slides on a radial groove 58 provided in an end plate 49. A rack 59 movably arranged is meshed with the rack 59. rack
59 is adapted to be linearly moved by a cylinder 60 which is attached to the outer peripheral portion of the end plate 49 so as to extend in the radial direction.
By the linear movement of the rack 59, the rotary shaft 47 and hence the T-shaped clamper 33 rotates left or right via the pinion 42. The rack 59 has a forward end at a position where a tip of the rack 59 abuts a stopper 65 protruding from the bottom of the radial groove 58 of the end plate 49, and a backward end at a shortened end of the rod of the cylinder 60. The T-shaped clamper 33 is turned over by 90 degrees in accordance with the forward and backward movement.

Since the driving means 38 on the movable mold 12 side has almost the same structure as the driving means 37 described above, a detailed structure thereof will be omitted here, but in the case of this embodiment, as shown in FIG. The clamping cylinder 39 on the movable mold 12 side is
It is formed long so that a piston stroke considerably larger than that of the clamping cylinder 39 on the fixed mold 11 side can be obtained, and accordingly, the piston 43 in the cylinder 39 is correspondingly formed.
The T-shaped clamper 34 that is operatively connected to and the shaft hole (not shown) provided in the T-shaped clamper 34 are also longer than the T-shaped clamper 33 and the shaft hole 46 (FIG. 9) on the fixed mold 11 side. ing. Clamping cylinder 39 on the movable die 12 side
Since it is long as described above, part of it is embedded in the movable side main mold 17 (FIGS. 22 to 25).

Each of the above-mentioned clamp devices 31 and 32 has a T-shaped clamper as shown in FIG.
33 and 34 are positioned at the forward end, and T-clamper 33,
The T-shaped clampers 33, 34 are positioned in the rotational direction so that the head portions 33a, 34a of the 34 can be inserted into the T-shaped slots 35, 36 provided in the corresponding inserts 16, 18. Under this condition, the inserts 16, 24 are now inserted into the recesses 24, 25 of the main molds 15, 17, respectively.
When 18 is pushed in by the opening / closing device 200 or the mold opening / closing movement of the machine 1, the head portions 33a, 34a of the T-shaped clampers 33, 34 enter the T-shaped slots 35, 36.

The subsequent operation is different between the clamp device 31 on the fixed mold 11 side and the clamp device 32 on the movable mold 12 side. In the case of the clamp device 31 on the fixed mold 11 side, the opening / closing movement of the mold is performed. When the fixed-side insert 16 is pushed into the concave portion 24 of the fixed-side main mold 15 by the above and its back surface comes into contact with the inner bottom surface of the concave portion 24, that is, the step shown in FIG.
Rotary actuator 401 following fluid pressure release in
Is operated, the T-shaped clamper 33 rotates 90 degrees, and the head portion 33a thereof rotates in the T-shaped slot 35 of the fixed-side insert 16 to a position where it cannot be removed. Then, after that, the T-shaped clamper 33 receives the pressure on the shortening side by the supply of the pressure fluid into the cylinder 39, whereby the fixed side insert 16 is clamped to the fixed side main mold 15. On the other hand, the clamp device 32 on the movable die 12 side
At the same time that the head portion 34a of the T-shaped clamper 34 enters the T-shaped slot 36,
40 is actuated, the T-shaped clamper 34 is rotated 90 degrees, the head portion 34a thereof is rotated in the T-shaped slot 36 of the movable side insert 18 to a position where it cannot be removed, and then the clamping cylinder 40 is actuated. The character clamper 34 is shortened, whereby the movable-side insert 18 is drawn into the recess 25 of the movable-side main mold 17 and clamped with respect to the main mold 17 as shown in FIG. At this time, the movable side insert 18
So that it can be smoothly drawn into the recess 25 of the movable side main mold 17,
A plurality of (here, four) clamping cylinders 40 operate in synchronization. In addition, in the above-mentioned clamp, each T
Since there is a predetermined gap S (FIG. 20) between the head portions 33a, 34a of the T-shaped clampers 33, 34 and the inner surfaces of the T-shaped slots 35, 36, the T-shaped clampers 33, 34 are subject to much frictional resistance. It rotates smoothly. 1 child from each master type 15, 17
When separating 6 and 18, respectively, the operation is the reverse of the above. First, the T-shaped clampers 33 and 34 are extended by the operation of the clamping cylinder 39, and the cylinders 39 are extended at their extended ends.
Fluid pressure is released, followed by rotary actuator 40
Is operated to rotate each T-shaped clamper 33, 34 by 90 degrees, whereby the inserts 16, 18 can be separated from the corresponding main molds 15, 17. Note that each of the clamp devices 31, 32 is not limited to this embodiment, and although not shown, for example, a rotary actuator 40, a motor having a speed reducer for rotationally driving the rotating shaft 47 of the pinion 42, The pinion 42 may be replaced by a worm gear or the like.

As shown in FIGS. 22 to 25, the extrusion means 13
The main mold side mechanism 55 is moved forward and backward by an extrusion rod 19 slidably inserted in the movable main mold 17 and an actuator (not shown) provided in the molding machine to which the push rod 19 is connected. And a main mold side extruding plate 75. Further, the insertion side mechanism 56 is pushed forward and backward by the push-out pin 20 that is inserted so as to project from the cavity surface of the movable-side insert 18, and the push-out pin 20 is implanted and is pushed out by the push-out rod 19 of the main shape mechanism 55. And an extrusion plate 21. In the recessed portion 25 that fits and holds the movable insert 18 formed substantially in the center of the movable main mold 17, and further in the approximate center of the bottom portion thereof, the insert mechanism 56 is provided.
A space 62 for accommodating the is formed. Also, the movable side main mold
A space 63 for accommodating the main mold side mechanism 55 is formed at substantially the center of the back surface of the 17 (the surface opposite to the surface facing the fixed mold 11).

On the other hand, as shown in FIGS. 11 and 12, the slide is provided on a slide core 23 as a dedicated portion B forming a cavity surface and an actuator 70 for holding the slide core 23 and driving the mold opening and closing. And a slide core attaching / detaching mechanism 10 for automatically attaching / detaching the slide holder 22 as the general-purpose part A and the slide core 23 / slide holder 22.
4 and. In this embodiment, the slide core 2
A plurality of slides 14 including 3, the slide holder 22, the slide core attaching / detaching mechanism 104, and the actuator 70 are radially arranged around the movable side main mold 17.

As shown in FIG. 12, the slide 14 is formed with a fitting insertion hole 73 penetrating the slide core 23. In the fitting insertion hole 73, a core pin 74 such as a cast pin is provided in the cavity. It is inserted so as to project. Then, an O-ring 64 is interposed between the base end portion of the core pin 74 and the fitting insertion hole 73 of the slide core 23 as a fastening means. The structure in which the O-ring 64 is interposed prevents the core pin 74 from accidentally falling out of the slide core 23 when the exclusive portion B is taken out from the general-purpose portion A. The configuration of the actuator 70 for driving the slide core 23 to open and close the mold will be described in detail later.

A back plate 102 is attached to the back surface (end surface opposite to the cavity surface) of each slide core 23. As shown in FIG. 26, the back plate 102 is
It is formed to have a size protruding at least in the width direction from the slide core 23. A portion of the back plate 102 protruding from the slide core 23 closes each slide core 23 (the closing of the slide core 23 is performed in a direction intersecting with the closing direction of the movable mold 12 with respect to the fixed mold 11). Be told.)
At this time, it contacts the outer surface of the movable insert 18, and functions as a stopper that regulates the fitting position. slide
26 and FIG.
As shown at 27, the movable-side insert 18 is inserted into a wide storage groove 101 formed in a substantially cross shape or in a radial shape. As shown in FIG. 12, a back plate 102 is fixed to the back surface of each slide core 23, and the slide core 23 uses the back plate 102 to connect the back plate 102 to the inlet side edge of the storage groove 101 of the movable insert 18. The position to be seated on the stepped portion 103 provided at is the insertion end for the movable insert 18. Then, at the insertion end of the slide core 23 with respect to the movable insert 18, the tapered surfaces 23a of the tip end portions of the slide cores 23 are brought into close contact with each other, whereby the movable insert 18 is formed.
An annular cavity 100 is formed around the convex shaped portion 18a.

A slide holder 22, which is a general-purpose portion of the slide 14, is arranged on the front surface of the movable platen 3 so as to be movable in a direction intersecting the mold opening / closing direction. As shown in FIG. 12, in this embodiment, each slide core attaching / detaching mechanism 104 has a shape capable of being inserted into the engaged portion 86 having the T-shaped slot 106 and the T-shaped slot 106 of the engaged portion 86. And a T-shaped clamper 105 as an engaging member formed so as to be able to engage with the engaged portion 86 by being rotated about the axis, and the T-shaped clamper 105 is extended / retracted and rotated about the axis. An actuator that is driven to rotate (described later),
Be equipped with. A space 88 for accommodating the tip of the T-shaped clamper 105 is formed on the back surface of the slide core 23. Further, a T-shaped slot 1 for inserting the T-shaped clamper 105 is provided at a position corresponding to the space of the back plate 102.
An engaged portion 86 with which the 06 and the T-shaped clamper 105 are engaged is formed. As the actuator for driving the T-shaped clamper 105, an actuator 70 for driving the slide core 23 provided on the movable side main mold 17 to open and close the mold is used.

The actuator 70, as shown in FIG.
A cylinder 107 that extends and retracts in the mold opening and closing direction of the slide core 23 and a rotary actuator 40 that rotationally drives a drive rod 91 of the cylinder 107 around an axis are combined. As shown in FIG. 11, the drive rod 91 of the cylinder 107 is
Has a space 94 formed therein so that the rotary drive shaft 92 of the rotary actuator 40 can be housed therein when it is retracted, and a key 95 is provided at the opening of the space 94.
A spline 96 with which the key 95 of the drive rod 91 of the cylinder 107 is meshed is formed on the drive shaft 92 of the rotary actuator 40. In addition, rotary actuator
Reference numeral 40 denotes a motor having a reduction gear device that rotationally drives the drive rod 91 of the cylinder 107 around an axis, and a pinion provided on the drive rod 91 of the cylinder 107 to move a rack meshed with the pinion in the axial direction. Alternatively, it may be configured by a worm gear or the like (not shown). The cylinder 107 can be used as it is by replacing the drive rod used in the molding die having the conventional slide with the drive rod 91 configured as described above and adding the rotary actuator 40. it can. In order to move the slide cores arranged in a radial direction forward and backward, the actuators 70 are provided so as to radially protrude from the movable side main mold including the lower part thereof.

As shown in FIG. 12, each slide holder 22 has a groove formed in the fixed side main mold 15 of the fixed mold 11 when the mold is closed and the mold is clamped as described above. twenty four
A shoulder portion 22a that engages with a and generates a mold clamping force is formed. In addition, each slide holder 22 is formed with a hole 99 penetrating in the mold opening / closing direction, and the shaft portion of the T-shaped clamper 105 is inserted into this hole 99 to allow the actuator 70 to move.
Is connected to the drive rod 91 of the cylinder 107. A groove is formed in a circumferential direction at a predetermined position of the shaft portion of the T-shaped clamper 105, and a retaining member 97 that restricts the movement of the slide holder 22 toward the actuator 70 is fitted in the groove. In addition, the slide holder 22 has an actuator 70
There is provided a stopper (not shown) for guiding the movement of the mold in the mold opening / closing direction and for positioning the slide holder 22 when the slide core 23 is detached.

Between the back plate 102 attached to the slide core 23 and the slide holder 22, an elastic member 98 composed of a coil spring that elastically acts to separate them from each other is interposed. As the elastic member 98, another spring member such as a leaf spring or a sponge-like porous material can be used instead of the coil spring. Further, a convex portion 102a is formed on the back plate 102, and a concave portion 22b into which the convex portion 102a is fitted is formed correspondingly on the slide holder 22. With this configuration, the slide core 23
Is elastically supported in a stable posture while being positioned with respect to the slide holder 22, and can be smoothly inserted into the movable-side insert 18. The present invention is not limited to this embodiment, and instead of forming the space 88 on the back surface of the slide core 23, the back plate 102 is bent to accommodate the tip of the T-shaped clamper 105. To form a convex portion 102a together with the space 88 for
It is also possible to form the T-shaped slot 106 and the engaged portion 86 in the. In any case, by mounting the back plate 102 on the back surface of the slide core 23, the space 88 for housing the T-shaped clamper 105, the T-shaped slot 106 and the engaged portion 86 can be easily formed. Further, although not shown, the slide core 23 is similar to the fixed mold 11 and the movable mold 12 in that the slide core 23 has a cooling chamber or pipe line through which a cooling medium such as water is supplied and circulated. And a pipe for supplying and discharging a cooling medium to and from the cooling chamber, etc., if necessary, and
The slide holder 22 optionally includes tubes for supplying and discharging the cooling medium. Then, when the slide core 23 is coupled to the slide holder 22, a pipe joint for connecting both pipes so that they can expand and contract, and for disconnecting the pipes when the slide core 23 and the slide holder 22 are separated from each other is provided. It is provided to correspond in pairs.

The structure of the slide core attaching / detaching mechanism 104 in this embodiment is similar to the structure of the clamp devices 31 and 32 in the fixed mold 11 and the movable mold 12. However, in the slide core attaching / detaching mechanism 104, only the shaft portion of the T-shaped clamper 105 is inserted into the slide holder 22 serving as the general-purpose portion A, and the slide core 22 is attached to the slide holder 22 like the clamp devices 31 and 32. T to attract 23
The character clamper 105 is not operated. As shown in FIG. 12, the length between the tip of the T-shaped clamper 105 and the retaining member 97 in this embodiment is such that the tip is floating in the space 88 formed in the slide core 23, that is, It is set so that a gap is formed in the mold opening / closing direction of the slide core 23. Then, as described above, the elastic member 98 is interposed between the back plate 102 of the slide core 23 and the slide holder 22 whose movement is restricted by the retaining member 97. Therefore, even when the T-shaped clamper 105 is not always engaged with the engaged portion 86 of the back plate 102 and is inserted into the T-shaped slot 106 of the back plate 102 of the slide core 23, It is possible to rotate around.
Further, the slide core 23 is held in a stable posture without floating with respect to the slide holder 22. In the slide core 23, the shoulder portion 22a of the slide holder 22 engages with the groove 24a of the fixed-side main die 15 when the movable die 12 is brought close to the fixed die 11 and the die is clamped. Are combined. As a result, the slide core 23 is fixed in position so that there is no gap between the back plate 102 and the slide holder 24 and they are in close contact with each other and withstand the casting pressure.

In the slide core attaching / detaching mechanism 104 having the above-described structure, when the die is closed during the normal die casting, the actuator 70 is extended and driven to function as the stopper of the slide core 23. The slide core 23 is advanced in the accommodation groove 101 of the movable side insert 18 until the back plate 102 is brought into contact with the outer side surface of the movable side insert 18 and the fitting position thereof is regulated. When die casting is completed and the mold is opened, the actuator 70 is retracted to drive the slide core 23.
Since the T-shaped clamper 105 is engaged with the engaged portion 86 formed on the back plate 102, the slide core 23 is moved backward together with the slide holder 22 in the accommodation groove 101 of the movable insert 18. And when opening and closing the mold of the slide core 23,
An elastic member 98 is interposed in a gap between the slide core 23 and the slide holder 22, and a convex portion 102a formed on the back plate 102 is a concave portion 22 formed on the slide holder 22.
By being fitted to b, it is possible to realize a configuration in which the slide core 23 can be kept in a stable posture with respect to the slide holder 22.

On the other hand, when the dedicated portion B including the slide core 23 is changed, the slide core 23 is moved to the slide holder.
When it is to be separated from 22, the actuator 70 is driven to rotate the T-shaped clamper 105 by 90 degrees around the axis so as to align with the T-shaped slot 106 formed in the back plate 102, and then the T-shaped clamper 105 is axially moved. The retraction drive is performed to remove the tip from the T-shaped slot 106. In addition, when connecting the slide core 23 to the slide holder 22,
The T-shaped clamper 105 has a T formed on the back plate 102.
The actuator 70 is extendedly driven in a state of being aligned with the character slot 106, the tip thereof is inserted into the T-shaped slot 106 of the back plate 102 and positioned in the space 88, and then the actuator 70 is driven to move the T-shaped clamper 105 back. 9 around the axis so that it can be engaged with the engaged portion 86 of the plate 102.
Rotate 0 degrees. That is, in the slide core attaching / detaching mechanism 104 in this embodiment, the engaged portion 86 having the T-shaped slot 106 provided in the slide core 23 and the engaged portion 8
A T-shaped clamper 105 formed to have a shape that can be inserted into the T-shaped slot 106 of 6 and engaged with the engaged portion 86 by being rotated around an axis, and the T-shaped clamper 105. By including the actuator 70 that extends / retracts and rotates about the axis, the slide core 23 can be automatically attached / detached to / from the slide holder 22 with a simple structure to change the stage. The configuration can be realized. Then, the actuator 70 can realize not only the attachment / detachment of the slide core 23 and the slide holder 22 at the time of changing the stage but also the mold opening / closing of each slide core 23.

As described above, in the molding die of this embodiment, when the slide 14 is divided into the slide core 23 and the slide holder 22 which is the general-purpose portion A, the slide core attaching / detaching mechanism 104 is used. , The slide holder 23 can be left in the molding machine and the slide core 23 can be automatically and quickly removed from the molding machine to be carried out to the outside of the molding machine. The slide holder 22 can be automatically and quickly mounted in the molding machine.

Next, with respect to the coupling mechanism 115 which integrates the exclusive portion B including the slide core 23 when the exclusive portion B is detached from the general purpose portion A and the stage is changed, mainly FIG. 7, FIG. 8 and FIG.
This will be described based on 6 and FIG. As shown in FIG. 26, the connecting mechanism 115 is provided between the fixed side insert 16 and the movable side insert 18, and the ball lock mechanism 110 is provided between the fixed side insert 16 and the slide core 23. The drop prevention pin 111 and an engagement hole 112 that is engaged with the drop prevention pin 111 according to mold closing. As shown in FIG. 26, the ball lock mechanism 110 is arranged on the diagonal line of the corner portion where the fixed side insert 16 and the movable side insert 18 face each other, and the fall prevention pin 111 has the width of each slide core 23. Two engaging holes 112 are provided in the direction, and the engaging holes 112 are provided at the corresponding positions of the stationary insert 16.

As shown in FIG. 8, the ball lock mechanism 110
Is a lock pin 114 inserted through the fixed-side insert 16, an expanded diameter portion 113 formed on the lock pin 114, a plurality of balls 120 pressed outward in the radial direction by the expanded diameter portion 113, and a movable insert. And an annular recess 12 into which the ball 120 is engaged, on the inner peripheral surface of the engaging hole 121.
2 is formed. As shown in FIG. 8, at the corners on the diagonal of the fixed-side insert 16 on the opposite side to the movable mold 12, there is a bottomed hole 123 having a diameter capable of accommodating the head of the lock pin 114. Are formed. A coil spring 124 is interposed between the head of the lock pin 114 and the bottom of the bottomed hole 123, and the lock pin 114 is biased so that the head projects toward the anti-movable mold side. Further, a guide bush 125 is provided on the movable mold 12 side of the fixed side insert 16.
Expanding part 113 of lock pin 114 at the tip of guide bush 125
Are slidably accommodated. And the guide bush
At the tip of 125, a hole 126 having a size capable of holding the ball 120 so as not to pop out and projecting so that the ball 120 can be engaged with the annular recess 122,
It is formed according to the number of balls 120.

When the normal die casting is performed, the fixed side insert 16 is fitted in the recess 24 of the fixed side main mold 15.
In such a state, the lock pin 114 is
It is abutted against the bottom surface of 4 and is moved to the movable mold 12 side against the urging force of the coil spring 124, and the expanded diameter portion 113 causes the ball 120 to move.
Does not occur. Therefore, in the state where the movable mold 12 is abutted against the fixed mold 11 to perform die casting and the mold is closed, the fixed-side insert
The ball lock mechanism 110 does not connect the 16 and the movable insert 18.

On the other hand, when changing the stage of the dedicated section B,
From the mold open state as shown in FIG. 22, the fixed mold 11 and the movable mold 12 are closed so that the fixed side insert 16 and the movable side insert 18 abut against each other as shown in FIG. As a result, the fall prevention pin 111 provided on the slide core 23 is fitted into the engagement hole 112 of the fixed-side insert 16, and the slide core 23 is held by the fixed-side insert 16. The slide core 23 is prevented from falling when the is taken out of the molding machine. At the same time, the engaging hole 12 of the movable insert 18 is
A guide bush 125 is fitted in the 1. After that, as described above, the cylinder 39 of the clamp device 31 is driven to extend to release the pulling force of the T-shaped clamper 33, and the T-shaped slot 35 is released.
Drive the rotary actuator 40 to rotate the T-shaped clamper 33 around the axis, and then the cylinder
39 is further extended to drive the fixed-side insert 16 from the recess 24 of the fixed-side main mold 15 by the T-shaped clamper 33, that is, the fixed-side insert 16 is separated from the bottom surface of the recess 24.
As a result, as shown in FIG. 8, the lock pin 114 is moved to the side opposite to the movable mold 12 by the urging of the coil spring 124, and the expanded diameter portion 113 pushes the ball 120 to the outside to engage the engagement hole 12 with it.
It acts to engage the annular recess 122 of 1. Therefore, the fixed-side insert 16 holding the slide core 23 and the movable-side insert 18 are integrally connected as a block.

In this embodiment, in addition to the slide core attaching / detaching mechanism 104 configured as described above, a connecting mechanism 115 is also provided.
By providing the slide core 23, the slide core 23 automatically separated from the slide holder 22 is integrated with the fixed side insert 16 and the movable side insert 18, which are other dedicated parts B, to form a block.
As shown in FIG. 25, the means for changing the stage of the dedicated section described later.
By 201, it can be taken out from the general-purpose part A and quickly carried out of the molding machine to complete the preparation for the stage change.
The slide core included in the dedicated section B after being exchanged into the molding machine again after exchanging the dedicated section B integrated outside the molding machine
23 can be automatically and quickly attached to the slide holder 22 to complete the stage change.

Next, the stage changing device 200 will be mainly described with reference to FIGS.
It will be described based on. As described above, the stage changing device 200
In general, the stage changing means 201 for the dedicated part, the stage changing means 231 for the general-purpose part, and the conveying means 251 common to both the stage changing means 201 and 231.
And have. The stage changing means 201 of the exclusive section is the conveying means 2
The base plate 253 is mounted on the 51, and the general-purpose section changing means 231 has a supporting plate 233 which is mounted on the conveying means 251 and supports the general-purpose section A at a predetermined height. . In addition, FIG. 2 shows a plan view of the transporting means 201 of the dedicated section. In addition, FIG. 3 is an enlarged plan view of a main part of the transporting means 201 of the dedicated part shown in FIG. further,
FIG. 4 shows an arrow I view in FIG. 2, FIG. 5 an arrow II view in FIG. 2, and FIG. 6 an arrow III view in FIG. In FIG. 2, the common conveying means 251 is arranged so that the die casting machine 1 is located on the left side thereof. In the die casting machine 1, the fixed platen 2 is arranged on the upper side in FIG. 2, and the movable platen 3 is arranged on the lower side in FIG. Therefore, on the left side of the stage changing device of FIG. 2, the movable mold 12 is opened and closed vertically with respect to the fixed mold 11, and the common transfer means 251 transfers the base plate 253 or the support plate 233. .

The common transfer means 251 is a transfer carriage 300 that moves in parallel with the mold opening / closing direction of the movable mold 12 with respect to the fixed mold 11 (hereinafter, referred to as a lateral direction), and a state in which the transfer carriage 300 is opened. A relay table 400 provided between the fixed platen 2 and the movable platen 3, and a plurality of drive rollers 301, 302 are provided on the facing surfaces of the carrier vehicle 300 and the relay table 400, and the fixed platen 2 and the movable platen 3. 303,304, 305,306
Are arranged such that their rotation axes are parallel to the mold opening / closing direction of the movable mold with respect to the fixed mold. The carrier vehicle 300 is supported on a guide rail 250 laid parallel to the mold opening / closing direction of the movable mold 12 with respect to the fixed mold 11. Therefore, the common transfer means 251 is the fixed-side main mold 15
It also has a function of moving the dedicated part aggregates 16 and 18 pulled out from the movable side main mold 17 to a predetermined position between the inside and outside of the die casting machine 1. A plurality of drive rollers 301 and 302 are arranged on the transport carriage 300 in a plurality of sets (two sets in this embodiment), with one set of the arrangement. Relay stand 400
, A plurality of drive rollers 303 and 304 are arranged in a set. Further, as shown in FIG. 32, the fixed platen 2 is provided with a cylinder 309 which is extended / retracted in synchronization with mold opening / closing, and a drive roller 306 is laterally provided on a drive rod of the cylinder 309. Being supported to move. Further, the drive roller 305 corresponding to the drive roller 306 is
It is supported by a bracket 307 provided on the movable platen 3. The length from the drive rollers 305 and 306 to the lower surface of the movable-side insert 18 including the integrated fixed-side insert 16 and slide core 23, which is the dedicated part B, and the fixed matching that is the general-purpose part A. The length to the lower surface of the movable side main mold 17 including the side main mold 15 and the slide holder 22 is naturally different.
Then, the drive rollers 301, 302 of an arbitrary set of the transport carriage 300
And the drive rollers 303 and 304 of the relay stand 400, and the drive rollers 3 and at least the drive rollers 306 and 305 of the fixed platen 2 and the movable platen 3 in the mold open state at least on the fixed platen 2 side.
The reference numeral 06 designates a substantially straight line in a direction orthogonal to the horizontal direction on a horizontal plane, and a base plate 253 of the stage changing means 201 of a dedicated portion or a step changing means 231 of a general-purpose portion described below in a direction orthogonal to the horizontal direction. , Vertical direction). At least the drive rollers 303 and 304 arranged on the relay table 400, the drive roller 306 supported by the cylinder of the fixed platen 2, and the movable platen 3.
The drive roller 305 supported by the bracket 307 of
As the conventional die change equipment, equipment provided in association with the die casting machine 1 can be used.

The stage changing means 201 for the exclusive section is a movable side insert 18 (hereinafter, referred to as "exclusive section assembly 16, 1" including the fixed side insert 16 and the slide core 23 which are integrated in the molding machine in the mold open state.
Also called "8". ) For the fixed-side main mold 15 and the movable-side main mold 17
It has a function of pulling out to a predetermined position separated from and pushing the dedicated portion aggregates 16 and 18 at the predetermined position into a predetermined position in the movable side main mold 17. Further, the dedicated part stage changing means 201 also functions as a placement part for placing the dedicated part aggregates 16 and 18. For this reason, the dedicated stage changing means 201 is provided with driving rollers 301, 302, 303, 30
A base plate 253 having a size capable of being placed on 4, 305, 306, a plurality of integrally connected shift tables 202 provided on the base plate 253, and a dedicated portion assembly using each shift table 202 as a base. Mold transfer means 203 that moves in the vertical direction by engaging with 16 and 18, and a dedicated part assembly 1
Guide means 204 for guiding the 6, 18 on a predetermined movement path,
Shift means for shifting and moving a plurality of shift tables 202 integrally connected in a direction orthogonal to the opening / closing direction of the mold.
260 is provided. In addition, the dedicated section changing means 201
Is a positioning means 205 for fixing the mold transfer means 203 and the guide means 204 to predetermined positions with respect to the fixed-side main mold 15 and the movable-side main mold 17 in the mold open state, and the base plate 253.
And a correction unit 261 that corrects the deflection.

A plurality of shift tables 202 (two in the illustrated example) of the dedicated stage changing means 201 are integrally connected by a connecting plate 252, and the shift means 260 moves the base plate 253 on the base plate 253 at right angles to the opening / closing direction of the mold. It moves together in the direction of doing. The base plate 253 has a shape capable of moving on the drive rollers 301, 302, 303, 304, 305, 306. The depth dimension of the base plate 253 (the dimension in the left-right direction in FIG. 2) is configured to be longer than the plurality of shift tables 202 that are integrally connected, and each of the plurality of shift tables 202 has an end portion of the base plate 253. It is possible to move from near the part to the central part.
In addition, the width dimension of the base plate 253 (dimension in the vertical direction in FIG. 2) is the drive rollers 301 and 302, 303 and 304, 30.
It is wide enough to be transported over 5 and 306. Further, in this embodiment, a cutout portion 254 for avoiding interference with the fixed-side main mold 15 attached to the fixed platen 2 is provided in a portion of the base plate 253 that enters the die casting machine 1. , Movable platen 3
A notch portion 255 for avoiding interference with the actuator 70 of the movable side main mold 17 or slide 14 attached to the. The base plate 233, which constitutes the conveyance means 201 of the exclusive section, is driven by the drive rollers 303 and 304 to get over the tie bar 6 on the front side from the relay table 400, and the leading end portion is placed on the drive rollers 305 and 306 in the molding machine. By driving the drive rollers 305 and 306, the tip end portion is located above the tie bar 6 on the far side (see FIG. 5).

The mold transfer means 203 is, as shown in FIG.
Ball lock mechanism 20 that can be automatically attached to and detached from the movable insert 18.
6 and a moving body 207 that supports the ball lock mechanism 206. In the ball lock mechanism 206, as shown in FIG. 18, a large diameter portion 220 is formed in a piston rod 219 of a cylinder 218 operated by hydraulic pressure or fluid pressure such as air, and a large diameter portion is formed in an opening 222 formed in a guide sleeve 221. Part 220
Has a structure in which the ball 223 is projected from the opening 222 to the outside of the guide sleeve 221 when is positioned. And
The ball lock mechanism 206 can be connected to the movable side insert 18 by fitting the ball 223 protruding to the outside of the guide sleeve 221 into the recess 54 of the guide sleeve receiving hole 53 provided in the movable side insert 18. it can. Meanwhile, piston rod
By retracting 219 and moving the large-diameter portion 220 to a position away from the opening 222, the ball 223 is stored inside the guide sleeve 221, and the ball lock mechanism 206 and the movable insert 18 are connected. Is canceled. A guide rail 209 for guiding the moving body 207 is laid on the upper surface of the base plate 253 so as to extend in the lateral direction, and a ball screw mechanism 208 for moving the moving body 207 in the lateral direction is provided. As shown in FIG. 4, the ball screw mechanism 208 is powered by a belt 226 that is wound between a driven pulley 224 fixed to the end of the ball screw shaft and a drive pulley 225 fixed to the rotary shaft of the electric motor. It will be supplied. The ball lock mechanism 206 is engaged with the movable insert 18,
By moving the moving body 207 laterally by driving the ball screw mechanism 208, it is possible to push out or pull in the dedicated portion assemblies 16 and 18 in the mold opening / closing direction of the movable mold 12 with respect to the fixed mold 11. It will be possible. Then, after connecting the ball lock mechanism 206 to the movable-side insert 18, by moving the moving body 207 in a direction away from the movable-side main mold 17 by the ball screw mechanism 208, as shown in FIG. The partial assemblies 16 and 18 can be pulled out from the concave portion 25 of the movable side main mold 17. At this time, the T-shaped clamper 34 is further extended and the movable side insert 18 is pushed out, whereby the dedicated portion assembly 1
It can assist the movement of 6 and 18. In addition, the movable side insert 18 and the guide roller 210 located on the side of the movement path,
By the guide roller 211 located below the movement path, the guide roller 211 is accurately guided on a predetermined movement path and is accurately transferred onto the empty shift table 202. FIG. 6 shows the state of the stage changing device 200 at this point.

The guide means 204 includes a guide roller 210 located on the side of the moving path when the special portion aggregates 16 and 18 are pushed or pulled laterally with respect to the general purpose portion A.
It has a guide roller 211 located below the movement path. Therefore, the dedicated part aggregates 16 and 18 are the mold transfer means.
When it is moved by 203, it is accurately guided by the rollers 210 and 211 on a predetermined movement path. Also,
In the guide means 204, the dedicated part assemblies 16 and 18 are provided on the movable side main mold 1
A space holding mechanism for holding the space between the movable insert 18 and the movable main mold 17 when the movable insert 18 is pushed into. Such a space attaching / detaching mechanism is provided on the movable side insert 18 and is provided on the movable side main mold.
The rolling bearing 212 (see FIG. 13) and the rolling bearing 213 (see FIG.
14)). Rolling bearing 21
As shown in the enlarged view of FIG. 17, the balls 2 and 213 are balls together with a spring 228 in a case 227 embedded in the movable side insert 18.
229 is pressed in, and the stopper of ball 229
It is locked at 0. Therefore, when the ball 229 comes into contact with the wall surface of the concave portion 25 of the movable side main mold 17, the ball 229 compresses the spring 228 while rotating, and the repulsive force of the spring 228 is used to move the movable side insert 18 and the movable side nest 18. Side main mold 17 recess
The distance from 25 is maintained at appropriate distances Y and Z (FIGS. 13 and 14). Then, as shown in FIGS. 13 and 14, when the movable insert 18 is pushed into the movable main mold 17, a portion of the movable insert 18 that has entered the recess 25 of the movable main mold 17. Instead of being guided by the rollers 210 and 211, the rolling bearings 212 and 213 maintain the distance between the movable insert 18 and the recess 25 of the movable main mold 17 at appropriate distances Y and Z. It is possible to smoothly push the dedicated portion aggregates 16 and 18 into the recess 25.

The shift means 260 includes a guide rail 256 laid over almost the entire depth of the base plate 253.
And the shift table 2 across the guide rail 256
And a cylinder 257 having a stroke capable of moving 02. A plurality of (two in the illustrated example) shift tables 202 of the dedicated stage changing means 201 are integrally connected by a connecting plate 252, and a base plate 253.
The upper part is integrally moved in a direction orthogonal to the opening / closing direction of the mold. On the one shift table 202, the special part aggregates 16 and 18 to be newly attached to the machine (hereinafter, also referred to as “new inserts”) are placed, and the base plate 253 is inserted into the die casting machine 1. On the other shift table 202, the special section assembly 1 removed from the machine
By mounting 6 and 18 (hereinafter, also referred to as “old nest”) and moving the shift table 202 on the base plate 253, the new and old nests can be exchanged in a short time.

As shown in FIGS. 15 and 16, the positioning means 205 has holes 51, 52 formed in the fixed-side main mold 15 and the movable-side main mold 17, respectively.
Has pins 214, 215 that engage with the. This pin 21
Reference numerals 4 and 215 denote cylinders 216 and 217 that are operated by hydraulic pressure fixed to the shift table 202 or fluid pressure such as air.
It is controllable flexibly by. And
By engaging the pins 214 and 215 with the holes 51 and 52, the shift table for the fixed-side main mold 15 and the movable-side main mold 17 can be changed.
The position of 202 is accurately adjusted, the mold transfer means 203 and the guide means 204 provided on the shift table 202 are accurately positioned with respect to the fixed-side main mold 15 and the movable-side main mold 17, and a dedicated section is assembled. It is possible to smoothly change the stages of the bodies 16 and 18.

The base plate 253 is bent by its own weight because the exclusive portion B is placed, and if the bending is large, the pins 214 and 215 of the positioning means do not align with the holes 51 and 52 and cannot be engaged. It is possible that Therefore, the correction means 261 contacts the rigid portion of the molding machine when necessary to support the base plate 253 from below,
Compensating for the deflection of the base plate 253, it is equipped with a jack 258. When the dedicated portion B is transferred into and out of the molding machine 1, the weight of the dedicated portion B causes the base plate to move.
When the 253 is bent, the shift table 202 on the base plate 253 is also bent, and the mold transfer means 203 and the guide means 204 provided on the shift table are provided.
It is presumed that it becomes impossible to fix the mold to a predetermined position with respect to the fixed-side main mold 15 and the movable-side main mold 17 in the mold open state. However, the jack 258 is shown in FIGS.
As shown in FIG. 16, with the base plate 253 entering the inside of the die casting machine 1, the die casting machine 1
By grounding on the tie bar 6 of the base plate
It supports 253 from below and corrects its deflection. By correcting the deflection of the base plate 253, the deflection of the shift table 202 on the base plate 253 is also corrected, and the mold transfer means 203 and the guide means 2
It is possible to fix 04 at a predetermined position with respect to the fixed-side main mold 15 and the movable-side main mold 17 in the mold open state.

Here, the stage changing device 201 of the above-mentioned dedicated section
Will be used to explain the procedure for changing the stages of the dedicated part assemblies 16 and 18, and in addition to this, a detailed description of the structure and function of each part will be added. First, as a preparatory step for performing the stage change of the movable side insert 16 and the fixed side insert 18 by the stage changing device 201 of the dedicated section, as shown in FIG. Rollers for general-purpose section changing 301, 3
Located on 02, 303 and 304. Then, of the two shift tables 202 (FIG. 2) of the special-purpose stage changing means 201, one is a special-purpose unit assembly 16, 18 to be removed from the machine.
The (old insert) is placed in an empty state to be placed, and the exclusive section aggregates 16 and 18 (new insert) to be newly attached to the machine are placed on the other shift table in advance. At this time, as shown in FIG. 22, the movable platen 3 is in a mold open state in which it is separated from the fixed platen 2.

When changing the stage of the exclusive section B, first, referring to FIG.
As shown in FIG. 5, the fixed mold 11 and the movable mold 12 are closed by the movement of the movable platen 3. Under this mold closed state, first, the clamp cylinder 39 of the clamp device 31 which is the attachment / detachment mechanism on the fixed mold 11 side. The fluid pressure is released, and the T-clamper 33 is inverted 90 degrees by the operation of the rotary actuator 40. At the same time, on the slide 14 side,
The fluid pressure in the slide cylinder 107 is released, and the rotary actuator 40 is operated to activate the T-shaped clamper 105.
Flip 90 degrees. Next, a fluid pressure is applied to the clamping cylinder 39 to extend the T-shaped clamper 33, and the movable die 12 is integrally opened with the movable platen 3 with respect to the fixed die 11 at the same timing. At this time, the T-shaped clamper 33 is extended at a speed higher than the mold opening speed, and due to this speed difference, the fixed insert 16 is brought into close contact with the movable insert 18 as shown in FIG. While maintaining, it slightly floats above the bottom surface of the recess 24 of the fixed main mold 15. As a result, the lock pin 114 of the ball lock mechanism 110 as the connecting mechanism retracts due to the urging force of the spring 124, and the ball 120
Engages with the annular recess 122 on the side of the movable insert 18 to bring the fixed insert 16 and the movable insert 18 into a connected state (locked state). The movable side main mold 17 continues the mold opening operation thereafter, but since the T-shaped clamper 33 is aligned with the opening of the T-shaped slot 35, the T-shaped clamper 33 is smoothly removed from the T-shaped slot 35. As a result, the fixed-side insert 16, the movable-side insert 18, the slide 14 including the slide core 23, the slide holder 22, and the cylinder 107 are integrally retracted to the original mold opening position.

Next, the pushing plate 21 of the pushing means 13 and the pushing rod.
19 and unlocked. Also, before and after this,
The rotary actuator 40 of the actuator 70 of the slide 14 operates, and the T-shaped clamper 105 of the rotary actuator 40 moves the slide core 23.
From the T-shaped slot 106 (Fig. 12),
Following this, the slide holder 22 is separated from the slide core 23 by the shortening of the drive rod 91 of the cylinder 107, and retracts to the standby position. At this time, since the slide core 23 is fixed to the fixed main mold 16 by the concave-convex fitting means 115 (FIG. 27), the fixed-side insert 16, the movable-side insert 18, which is the dedicated part B, The push-out plate 21 and the slide core 23 are integrated, that is, left in the movable side main mold 17 in the form of a dedicated portion assembly.

After that, the drive rollers 301, 302, 303, 304,
The base plate 253 is moved into the machine 1 by driving 305 and 306, and the base plate 25 is moved by the loading completion signal.
The jack 258 equipped on the 3 operates, and as shown in FIG. 16, the base plate 253 is jacked up to correct the deflection. At this time, the empty shift table 202 on the tip side of the base plate 253 is positioned between the fixed mold 11 and the movable mold 12 in the mold open state,
Simultaneously with the completion of the jack-up, the shift table 20
2 cylinders 2016, 217 in the positioning means 205 provided in 2
16, the pins 164 and 165 are fitted into the positioning holes 51 and 52 of the fixed main mold 15 and the movable main mold 17, respectively, and the shift table 202 in the empty state has both main molds 15, Accurately positioned with respect to 17.

Then, the fluid pressure of the cylinder 39 in the clamp device 32 on the movable die 12 side is released by the positioning completion signal, and then the T-shaped clamper 34 is inverted by 90 degrees by the operation of the rotary actuator 40, and thereafter. The T-shaped clamper 34 is extended by the operation of the cylinder 39. Then, as shown in FIG. 20, the dedicated portion assembly is extruded from the recessed portion 25 of the movable main mold 17 by a predetermined distance, and a part of it (the movable insert
(A part of 18) rides on the guide roller 211 of the guide means 204 of the shift table 202. On the other hand, before and after the extrusion of the dedicated portion assembly, the ball screw mechanism 208 in the mold transfer means 203 operates, and the moving body 207 advances to the movable main mold 17 side as shown in FIG. The ball lock mechanism 206 provided in the moving body 207 is fitted into the guide sleeve receiving hole 53 provided in the movable insert 18. Then, the ball 223 is engaged with the recess 54 on the movable insert 18 side by the operation of the cylinder 218 in the ball lock mechanism 206, and the dedicated part aggregate is inserted into the movable body 207 of the mold transfer means 203 via the movable insert 18. Are linked together. After that, the moving body 207 retreats by the re-operation of the ball screw mechanism 208, and as shown in FIG. 19, the exclusive part assembly is completely separated from the movable main mold 17 and is placed at a predetermined position on the empty shift table 202. After the placement, the removal of the dedicated section B as an old product from the general-purpose section A is completed, and the positioning means 205 of the shift table 202 is retracted.

Next, by operating the shift cylinder 257 on the base plate 253, the shift table 202 on which a new dedicated portion assembly is mounted, that is, the full shift table 2 is placed.
02 moves between the fixed main mold 15 and the movable main mold 17 in the mold open state, and at the same time when this movement is stopped, the cylinders 216 and 217 of the positioning means 205 provided on the shift table 202 operate, and the same as above. Fully-equipped shift table 202 has two main types 1
Accurately positioned with respect to 5, 17

Then, in response to the positioning completion signal, the ball screw mechanism 208 in the die transfer means 203 is actuated, and the moving body 207 thereof advances toward the movable main die 17 side, and the dedicated portion assembly is
The position is moved from the position shown in FIG. 19 to the position shown in FIG. 20, and the dedicated portion aggregate is pushed into the recess 25 of the movable main die 17 partway. At this time, the dedicated portion assembly is accurately guided by the guide roller 211 row and the guide roller row 210 in the shift table 202, and is smoothly pushed into the recess 25 of the movable main mold 17.
When pushing the dedicated part assembly 16, 18 into the movable side main mold 17,
As shown in FIGS. 13 and 14, the portion of the movable insert 18 that has entered the recess 25 of the movable main mold 17 cannot be guided by the rollers 210 and 211, but instead has a rolling bearing 21.
Since the distances between the movable insert 18 and the recess 25 of the movable main mold 17 are maintained at appropriate distances Y and Z by the reference numerals 2 and 213, the movable insert 18 can be smoothly pushed into the recess 25. Become. On the other hand, in this recess 25, the T-shaped clamper 34 of the clamp device 32 on the movable die 12 side is waiting in the extended state and in the 90-degree inverted state (unclamped state), and the head portion of each T-shaped clamper 34.
34 a enters the T-shaped slot 36 of the movable insert 18. The ball lock mechanism 206 is separated from the movable insert 18, and the moving body 207 is separated from the movable insert 18 by the ball screw mechanism 208. Then, the clamp device 32 reverses the T-shaped clamper 34 by 90 degrees by the operation of the rotary actuator 40 so that it cannot be pulled out from the T-shaped slot 36, and subsequently, the T-shaped clamper 34 is operated by the operation of the clamping cylinder 39.
Shorten (clamp operation). Then, as shown in FIG. 21, the dedicated portion assembly is pulled into the bottom side of the concave portion 25 of the movable main mold 17, and the dedicated portion assembly including the movable insert 16 is moved to the movable main die 17.
Fixed to. Then slide 14 actuator 70
By the operation of the cylinder 107, the T-shaped clamper 105 moves forward integrally with the slide holder 22, and the head portion a of the T-shaped clamper 105 enters the T-shaped slot 106 of the slide core 23.

Next, as shown in FIG. 15, the cylinders 216 and 2 in the positioning means 205 provided on the slide table 202 are arranged.
17 is actuated, the pins 214 and 215 are disengaged from the positioning holes 51 and 52 of the fixed main mold 15 and the movable main mold 17, and their engagement is released. , The piston rod is shortened and stored, which allows the base plate 253 and the mold (fixed mold 11, movable mold 12
Etc.) and the connection with the machine 1 side is disconnected. Then, the shift table 202 which is in an empty state by transferring the new insert to the movable side main mold 17 is returned to the initial position on the base plate 253 together with the shift table 202 on which the old insert is placed. . The base plate 253 has drive rollers 301 and 30.
2, 303, 304, 305, 306 are moved from inside the machine 1 onto the transfer carriage 300 via the relay stand 400 outside the machine 1, and the dedicated section assembly as an old product on the base plate 253 is also a machine. 1 is carried out. At this time, most of the dedicated portion assembly is set to be relatively deep, and the concave portion 25 of the movable side main mold 17 is set.
Since it is housed inside, the conveyance path of the base plate 253 is opened wide enough, and the dedicated section assembly as an old product placed on this base plate 253 does not interfere with the dedicated section assembly as a new product. , Is smoothly carried out of the machine 1. In other words, when changing the stage, it is not necessary to open the mold more than the standard, and therefore, the design change of the machine 1 is not necessary.

Thereafter, the movable platen 3 is moved, that is, the mold is closed, so that the dedicated portion assembly fixed to the movable side main mold 17 is moved toward the fixed main mold 15. At this time, as shown in FIG. 24, when the tapered shoulder portion 22a of the slide holder 22 is slightly fitted into the rim portion of the recess 24 of the fixed main mold 15, the mold closing operation is temporarily stopped, and at the same time, the mold closing operation is stopped. The clamp force of the clamp device 32 on the movable die 12 side is relaxed, and the fluid pressure of the slide cylinder 107 is released. Then, by releasing the fluid pressure of the slide cylinder 107, the lower slide holder 22
Is slightly lowered, but since its tip end is supported by the rim of the concave portion 24 of the fixed-side main mold 15, it does not greatly descend. Next, when the mold closing operation is restarted, the exclusive part assembly is gradually pushed into the concave portion 24 of the fixed main mold 15, but is loosely fixed to the movable main mold 17 due to the relaxation of the clamping force described above. The slide holder 22 and the dedicated portion assembly are smoothly pushed in while following the inner surface of the fixed main mold 15.
At this time, the clamp device 31 on the fixed die 11 side positions the T-shaped clamper 33 at the forward end to release the fluid pressure in the clamp cylinder 39, and fixes the head portion of the T-shaped clamper 33 to the fixed insert. It is positioned so that it can be inserted into the T-shaped slot 35 provided in the 16, and the head portion of the T-shaped clamper 33 enters into the T-shaped slot 35 in response to the pushing.
When the mold closing is completed, the rotary actuator 40 on the fixed mold 11 side is actuated to invert the T-shaped clamper 33 by 90 degrees, whereby the fixed side insert 16 is firmly clamped to the fixed side main mold 15. . At the same time, slide 14
Side rotary actuator 40 is actuated, the T-shaped clamper 105 is inverted 90 degrees, the slide core 23 is retained with respect to the slide holder 22, and the clamp device 32 on the movable die 12 side is actuated to make a movable insertion. The child 18 is firmly clamped to the movable main mold 17.

A fixed insert for the fixed main mold 15
When the mounting of 16 is completed, the ball lock mechanism 110 connecting the fixed insert 16 and the movable insert 18 is automatically unlocked, and thereafter, the movable platen 3 is moved to move the fixed mold 11
Then, the movable die 12 is opened, and the stage change of the dedicated section B to the general-purpose section A is completed. As described above, the stage changing means 201 and the conveying means 251 of the dedicated section included in the stage changing device 200 are provided.
Is used to complete the procedure for changing the stages of the dedicated part assemblies 16 and 18.

The operational effects obtained by the embodiment of the present invention having the above structure are as follows. First, in the present embodiment, by the change-over device 201, which is a dedicated part of the change-over device 200, the attaching / detaching mechanism (the clamp devices 31, 32 and the slide core attaching / detaching mechanism 104) automatically controls the general-purpose portion A of the molding die. It is possible to efficiently perform the stage changing work by performing the work of pulling out the special-purpose part B that is detachably attached from the general-purpose part A and pushing it into the general-purpose part A. Moreover, in the setup change work, the setup changer 201 of the dedicated section handles only the special section B of the molding die, which is smaller and lighter than the case where the entire die is set up. Therefore, the structure is light, and high-speed operation is possible. Therefore, it is possible to simplify the changeover device and speed up the changeover operation.

Further, the die transfer means 203 transmits the power for pulling out and pushing in the dedicated portion B in the die casting machine in the mold opened state to the dedicated portion B, and the guide means 204 pulls out the dedicated portion B and It is possible to accurately guide the movement of the exclusive portion B during the pushing operation. Therefore, it is possible to smoothly change the stage of the dedicated section B. Further, the moving body 207 can perform the work of pulling out and pushing the exclusive portion B with respect to the general purpose portion A in the opening / closing direction of the mold. That is, the die casting machine 1
Since the mold is in the mold open state, it is possible to smoothly perform the stage change of the exclusive portion B by utilizing the space formed by the mold open.

Further, the moving body 207 is automatically attached / detached to / from the exclusive portion B by the ball lock mechanism 206, so that the automation of the operation of pulling out and pushing in the exclusive portion B with respect to the general purpose portion A can be promoted. Therefore, it is possible to smoothly change the stage of the dedicated section B. In addition, the stage changer 200
By the guide roller 210 on the side of the moving path,
The horizontal position accuracy of the exclusive portion B is guaranteed, and the vertical position accuracy of the exclusive portion B is ensured by the guide roller 211 below the moving path, so that the exclusive portion B can be accurately pulled out and pushed into the general purpose portion A. It can be carried out.

Further, the space holding mechanism provided on the side of the exclusive portion B can ensure a predetermined gap between the exclusive portion B and the general portion A when the exclusive portion B is pushed. Since the rolling bearings 212 and 213 are used as the space holding mechanism, a predetermined gap Y, Z is secured between the dedicated portion B and the general-purpose portion A when the dedicated portion B is pushed into the general-purpose portion A. It is possible to accurately perform the pushing operation of the dedicated portion B with respect to, and to prevent rubbing between the general-purpose portion A and the dedicated portion B, and to perform the pushing operation smoothly.

Further, by fixing the mold transfer means 203 and the guide means 204 at predetermined positions with respect to the general purpose part A by the positioning means 205, the work of pulling out and pushing in the special purpose part B with respect to the general purpose part A can be performed accurately. You can
The positioning means 205 are expandable pins 214 and 215 that engage with the holes 51 and 52 formed in the general-purpose portion A, and extend the pins 214 and 215 as necessary to form the holes 51 and 52 in the general-purpose portion A. By engaging with, the die transfer means 203 and the guide means 204 can be fixed at a predetermined position with respect to the general purpose part A, and the dedicated part B can be pulled out and pushed into the general purpose part A accurately.

Moreover, the stage changing device 201 for the exclusive section is provided on the conveying means 251 common to the stage changing means 201 and 231 of the exclusive section B and the general-purpose section A which can be moved between the inside and outside of the die casting machine 1. Therefore, by the stage changing means 201 of the dedicated section,
Inside the die casting machine 1 in the mold open state, the dedicated portion B separated from the general-purpose portion A and pulled out to a predetermined position can be conveyed to the outside of the die casting machine 1 by the conveying means 251. Further, another dedicated section B is carried in from the outside of the die casting machine 1 to a predetermined position in the die casting machine 1 by the transporting means 251, and the stage changing means 201 of the dedicated section is carried out.
Thus, the dedicated portion B at the predetermined position can be pushed into the predetermined position in the general-purpose portion A.

In the embodiment of the present invention, conventionally, as the die changing equipment, the transfer carriage 300 and the relay stand 400, which are provided along with the die casting machine 1, and the drive roller 305 in the molding machine, In order to make effective use of the drive roller 306, a configuration is adopted in which the dedicated stage changing means 201 is arranged on a base plate 253 having a shape capable of moving on the drive rollers 301, 302, 303, 304, 305, and 306. did. However, the shift table 202 itself of the stage changing means 201 of the dedicated section is orthogonal to the opening / closing direction of the mold by the dedicated feeding mechanism without using the transport carriage 300 and the relay stand 400 and the drive rollers 305 and 306 in the molding machine. It may be configured to be driven in the direction.

Further, in the embodiment of the present invention, after the fixed-side insert 16 and the movable-side insert 18 are integrated, the stage changing device 20 is provided.
The case where the new and old inserts are changed by 0 has been described as an example.
It is also possible to change the stage using. Further, the stage changing device 200 according to the embodiment of the present invention can also be used for changing the stage of a molding die in a molding machine other than the die casting machine 1.

As described above, in the present embodiment, the attachment / detachment of the general-purpose part A and the dedicated part B by the attachment / detachment mechanism on the die side, and the connection / disconnection of the dedicated parts B by the connection mechanism 115 on the die side as well. , The movement of the mold on the machine 1 side, the pushing and pulling out of the exclusive section assembly from the general-purpose section A (movable main mold 17) by the shift table 202 on the exclusive section changer 201 side, and the exclusive section changer 201 as well. Side shift cylinder 202 is used to shift the two shift tables 202, and common drive rollers 301 to 306 on the stage changer 200 side are used to convey the base plate 253 inside and outside the machine.
While leaving the machine 1 in the machine 1 and without inserting or removing the tie bar 6, only the dedicated part B as the old product is collectively taken out from the general purpose part A and only the new exclusive part B is collectively used as the general purpose part A. Can be installed. That is, the dedicated section B is extremely efficiently
It is possible to change the stage, and it is possible to swiftly cope with small-lot production of a wide variety of products and early wear of molds. According to the present invention, as described above, the fixed inserts as the dedicated parts B are integrated without integrating the dedicated parts B with each other in the mold closed state, that is, without collectively changing the stages in the form of the exclusive part assembly. Of course, 15, the movable insert 17, and the slide core 23 may be individually changed.

Next, the supporting plate 233 of the step changing means 231 of the general-purpose portion will be described with reference to FIGS. 28 to 31. The support plate 233 includes drive rollers 301, 302, 303, 304, 305, and
It is mounted on 306 and supports the general-purpose part A at a predetermined height. In this embodiment, a plate body 234 having a predetermined thickness ta and a rear end edge of the plate body 234 in the insertion direction are provided. (General-purpose portion positioning portion 235 provided on the lower end edge in FIG. 29), a bearing 237 that engages with the groove 236 provided in the universal portion A and positions the universal portion A with respect to the support plate 233, Groove on the back side where the drive roller 306 is engaged
It is equipped with 238 and. The support plate 233 in this embodiment is provided with a notch 23 for avoiding interference with the actuator 70 of the slide 14 attached to the movable side main mold 17 when the support plate 233 is inserted between the platens 2 and 3.
9 is formed so as to open at the front end edge (upper edge in FIG. 29) of the plate main body 234 in the insertion direction, and as shown in FIG. 29, the whole is shaped so as to have a substantially U shape in plan view. ing.

In this embodiment, as described above, the drive rollers 303 and 304 of the relay stand 400 and the drive rollers 305 and 306 of both platens 2 and 3 which are conventionally provided in association with the die casting machine 1 are used. In order to use at least, the lower part of the movable-side main mold 17 including the fixed-side main mold 15 and the slide holder 22, which is the general-purpose part A, is cut out to be mounted on the drive rollers 306 and 305 of both platens 2 and 3. A gap tb is secured so that the supporting plate 233 can be inserted below the general-purpose portion. It will be readily understood that the gap tb is greater than the thickness ta of the support plate 233. Further, in this embodiment,
On the surface of the fixed platen 2 on the movable platen side, a molding material introducing portion 26 communicating with the injection cylinder 8 (see FIG. 1) is provided as a positioning mechanism in a protruding manner, and the fixed side main portion which is a general-purpose portion A. A molding material introduction portion 27 communicating with a cavity introduction portion (not shown) of the fixed-side insert 16 is provided on the surface of the mold 15 on the side facing the fixed platen 2. The molding material introducing portion 26 of the fixed platen 2 is formed in a tapered shape in which the diameter gradually decreases from the base end portion to the tip end portion (the fixed platen 2 to the movable platen 3). Also, in response to this,
The molding material introducing portion 27 of the fixed-side main mold 15 extends from the opening to the bottom.
It is formed in a tapered shape in which the diameter gradually decreases from the fixed platen 2 to the movable platen 3. The molding material introducing part 26 of the stationary platen 2 is fitted into the molding material introducing part 27 of the stationary side main mold 15 to communicate with each other, and the stationary side main mold 15 is positioned with respect to the stationary platen 2. Be communicated with. Then, the two molding material introducing parts 26, 27 are in a state in which the movable side main mold 17 including the fixed side main mold 15 and the slide holder 22 is mold-shaped by the positioning mechanism 116 to be a lump when fitted. The general-purpose part A is set at a position where it floats up and separates from the support plate 233 that has been placed until then. The thickness ta of the plate body of the support plate is set to the general-purpose portion A of the fixed-side main mold 15 with respect to the molding material introduction portion 26 of the fixed platen 2 when it is placed on the drive rollers 305 and 306. The molding material introduction portion 27 is supported at a height such that it can be inserted, and is set smaller than the gap tb. The positioning mechanism 116 includes positioning pins 13 on the surfaces of the fixed-side main mold 15 and the movable-side main mold 17 facing each other.
1 and the positioning hole 132 may be provided correspondingly. In this embodiment, in order to explain the case where the molding die is a die-casting machine configured by dividing the general-purpose portion A and the dedicated portion B, the fixed-side main die 15 is fixed to the fixed platen 2. As a positioning mechanism for positioning in position, the molding material introducing section 26, 2
Showed 7. However, the present invention is not limited to this embodiment, and for example, the molding material introducing portion 26 of the stationary platen 2 is recessed in an appropriate tapered shape, and the molding material introducing portion 27 of the stationary side main mold 15 is formed. Can be provided in a correspondingly tapered manner, and when applied to another molding machine such as an injection molding machine, one or more can be provided separately from the molding material introducing section.

Further, in this embodiment, as a conventional die changing equipment, as shown in FIG. 32, a general-purpose portion A is attached to a bracket 307 supporting a drive roller 306 provided on the movable platen 3. Since the roller 308 for assisting the lateral feeding of the support plate 233 is provided along with the die casting machine 1 so as to be exposed above the bracket 307, the plate body 234 of the support plate 233 has a uniform plate thickness. In some cases, the roller 308 interferes when the support plate 233 is fed in the vertical direction, and prevents the feed in the vertical direction. Therefore, on the back surface of the plate body 234 of the support plate 233 and on the movable platen 3 side, the roller 308
A thinly molded portion 240 is provided so as not to interfere with the. However, when the roller 308 is not provided in association with the die casting machine, the support plate 233 is used.
It is not necessary to provide a thin molded portion 240 of In addition,
The portions of the support plate 233 other than the thinly-formed portion 240 are the drive rollers 301 and 302 of the carriage 300 and the relay stand 400.
It is set to be in a horizontal state by being supported by 303 and 304.

Next, one embodiment of the method for changing the stage of the molding die of the present invention will be described in detail by using the molding die having the above-mentioned structure. As described above, the molding die to which the method of the present invention is applied is introduced with a molding material in which the general-purpose part A of the molding die and the platen 2 are fitted and communicated with each other by closing the mold. Part 26, 27
When the molding material introducing portions 26 and 27 are fitted, the general-purpose portion A of the molding die is set to the platens 2 and 3 respectively.
A support plate 233 which is provided so as to be positioned at a predetermined height with respect to the transfer means 251 and is moved between the inside and outside of the molding machine.
Is for supporting the general-purpose part A of the molding die at a height such that the molding material introducing parts 26, 27 of the platen 2 and the general-purpose part A of the molding die can be fitted together, and The general-purpose part A of the platen 2 and the molding material introducing parts 26 and 27 of the platen 2 are fitted to each other to platen the platens 2 and 3.
When the general-purpose portion A of the molding die is positioned at a predetermined height with respect to the general-purpose portion A of the molding die,
It is formed so as to be separated from.

The stage changing method of the present invention is, in the molding die having the above-mentioned structure, roughly, the conveying means 25.
General-purpose part A of the molding die on the support plate 233 placed on 1.
The supporting plate 233 is moved into the molding machine by the transporting means 251 and the mold is closed to fit the general-purpose part A of the molding die and the molding material introducing parts 26 and 27 of the platen 2 to fit the molding metal. By positioning the mold with respect to the platens 2 and 3 at a predetermined height, the general-purpose portion A of the molding mold is supported by the support plate 23.
The support plate 233 is separated from the support plate 3 by the transporting means 251.
Is moved out of the molding machine.

In the step changer 231 of the general-purpose section configured as described above, when changing the step of the general-purpose section A, in the case of this embodiment, the dedicated sections B are separated from the general-purpose sections first. The die casting machine 1 is in a mold open state in which the movable platen 3 is separated from the fixed platen 2.
In addition, a support plate 233 that supports a new general-purpose part A used after changing the stages in a matched state is placed on one set of drive rollers 301 and 302 of the transport carriage 300. In addition, the other set of drive rollers 301, 30 of the carriage 300 is
The support plate 233 is placed on the top 2 in an empty state. Then, the other set of drive rollers 301 and 302 is connected to the relay stand 40.
The transport carriage 300 is positioned so as to be aligned with the drive rollers 303 and 304 of 0, respectively, and the cylinder 309 of the fixed platen is extended and driven by the mold opening so that the drive roller 306 is aligned with the drive roller 304 of the relay stand 400. And the movable platen drive roller 305.
Has moved to the substantially same position as the drive roller 303 of the relay stand 400 in the lateral direction. Also, the tie bar 6 adjacent to the relay stand 400 is moved in the axial direction to drive the drive roller 3 of the relay stand 400.
Drive rollers 30 provided on 03 and 304 and both platens 2 and 3
The actuator 70 of the slide holder 22, which is integrated with the fixed main mold 15 and the movable main mold 17 later, is attached to the tie bar 6 so that the tie bar 6 does not hinder the movement of the support plate 233 between the tie bar 6 and 305. It should be possible to move inside and outside both platens 2 and 3 without interference.

From this state, the drive rollers 301, 30 of each row are
Driving 2, 303, 304, 305 and 306, (C) of FIG.
, The empty support plate 233 is moved between the fixed platen 2 and the movable platen 3 to move the empty support plate 233 under the movable main mold 17 including the fixed-side main mold 15 and the slide holder 22 to support the empty support. Insert the plate 233. At this time, a gap tb is formed between the fixed main mold 15 and the movable main mold 17 including the slide holder 22 and the empty support plate 233. Therefore, the empty support plate 233 can be reliably inserted below the fixed-side main mold 15 and the movable-side main mold 17 without interfering with each other. Next, the movable platen 3 is brought close to the fixed platen 2, and as shown in FIG. 32B, the mold is closed and the fixed-side main mold 15 and the movable-side main mold 17 including the slide holder 22 are mutually separated. Abut and align mechanism 116
The positioning pin 131 is fitted into the positioning hole 132 and the molds are matched to form a block.

Next, from the platens 2 and 3 to the fixed side main mold
When the general-purpose part A in which the movable side main mold 17 including the slide holder 22 and the slide holder 22 are integrated is detached and the movable platen 3 is separated from the fixed platen 2 and the mold is opened, refer to FIG. As shown in FIG.
Will be supported on top of 3. Fixed platen 2
The driving roller 306 provided on the relay plate 400 and the carriage 300 is driven by the cylinder 309 that is extended and driven in synchronization with the mold opening in a state of being engaged with the groove 238 provided on the back surface of the support plate 233. It is moved so as to be aligned with the drive rollers 304 and 302. Then, the drive roller 305 provided on the movable platen 3 is mold-opened until it reaches substantially the same position or more in the lateral direction as the drive rollers 303 and 301 of the relay stand 400 and the transport carriage 300, and the drive roller 305 of the support plate 233. Supports the thinly molded portion 240. Therefore, in the molding machine, the support plate 233 inclines so that the movable platen side becomes lower, but the bearing 237 is engaged with the groove 236 formed in the lower surface of the movable side main mold 17, so that the general-purpose part is formed. A is stably supported on the support plate 233 without being displaced. Then, the driving rollers 301, 302, 303, 304, 305, 306 in each row are reversely driven,
The support plate 233 is retracted from between the fixed platen 2 and the movable platen 3, and the support plate 233 on which the general-purpose part A in a lump state is supported is removed from inside the molding machine to the relay stand 4
It is moved to the drive rollers 301 and 302 of the carriage 300 via 00.

After that, the transport carriage 300 is moved in the lateral direction, and the one set of the drive rollers 30 on which the support plate 233 supporting the new general-purpose portion A in the agglomerated state is placed.
1 and 302 are drive rollers 303 and 304 provided on the relay stand 400.
And align them in a straight line. At this time, the movable platen 3 is separated from the fixed platen 2 and the mold is opened, and the drive roller 306 is aligned with the drive roller 304 of the relay table 400 by the extension drive of the cylinder 309. Further, the drive roller 305 is moved backward until the drive roller 305 is positioned substantially in line with the drive roller 303 of the relay stand 400 or more. And each drive roller
By rotating 301, 302, 303, 304, 305, 306, the support plate 233 supporting the new general-purpose part A is carried in between the fixed platen 2 and the movable platen 3 (see (a) of FIG. 32).
At this time, the molding material introduction portion 27 recessed in the fixed-side main mold 15
Since the position of is supported by the support plate 233 having a predetermined thickness ta, it is located at a height at which the molding material introducing portion 26 projecting from the fixed platen 2 can be fitted. Next, the movable platen 3 is brought close to the fixed platen 2 and the mold is closed. In synchronism with this mold closing, the cylinder 309 is driven to retract and the drive roller 306 moves toward the fixed platen 2, so that the support plate 233 in which the groove 238 is engaged with the drive roller 306 also approaches the fixed platen 2. The molding material introduction portion 27 of the stationary platen 2 is smoothly fitted into the molding material introduction portion 27 of the fixed-side main mold 15 which is moved and is supported by the support plate. And the fixed side main mold which is the general-purpose part A
When 15 and the movable-side main mold 17 collide with both platens 2 and 3, the general-purpose part A in a mold-matched state from the support plate 233 due to the fitting of the molding material introducing parts 26 and 27. It floats up and separates (see FIG. 32 (b)). Then, the fixed-side main mold 15 and the movable-side main mold 17 are attached to the fixed platen 2 and the movable platen 3, respectively, and the relay stand 400 and the carrier truck are within a range in which the drive roller 305 of the movable platen 3 can support the support plate 233. The movable platen 3 is separated from the fixed platen 2 and opened so as to be substantially aligned with the driving rollers 303, 301 of the 300 or move away from the fixed platen 2 on the opposite side. Then, in synchronization with this mold opening, the cylinder 309 is extended and driven, and the drive roller 306 of the fixed platen 2 is aligned with the drive rollers 304 and 302 of the relay table 400 and the transport carriage 300. After that, the drive rollers 301, 302, 303, 304, 305, 306 are rotated in the reverse direction, and the vacant support plate 233 is transferred via the relay stand 400 to the transport carriage 30.
By moving it to the 0 position, the means for changing the stage of the next dedicated section 2
The base plate 253 of 01 or the support plate 253 of the step changer 251 of the general-purpose part is prepared so that it can be transported (see (c) of FIG. 32).

In the molding die of the present invention, as described above, from the drive rollers 305 and 306, the exclusive section assemblies 16 and 18 are connected.
To the lower surface of the general-purpose part aggregates 15 and 17 are different from each other, and the general-purpose part aggregate is provided in order to secure a gap tb so that the support plate can be inserted below the general-purpose part aggregate. Although the lower surface of each of the above is cut, the dedicated portion B and the general-purpose portion A are respectively supported at appropriate heights by the common conveying means 251 provided conventionally in association with the die casting machine 1. Since it can be transported to an appropriate position between the inside and outside of the molding machine, it is possible to efficiently and easily change the stage with a simple structure. Therefore, the manufacturing cost of the molding die itself and its molded product can be achieved. Manufacturing cost can be reduced. In addition, when the actuator 70 for opening and closing the slide core 23 and the like protrudes particularly below the general-purpose part A, the shape of the support plate supporting the general-purpose part A is avoided without interfering with the actuator. Due to the molding, it is possible to reliably and stably support the general-purpose part A when the general-purpose part A is changed and to carry it. further,
When the fixed-side main mold 15 and the fixed platen, which are the general-purpose parts A, are provided with the molding-material introducing parts 26 and 27 as described above, respectively, the general-purpose part A is utilized by using the molding-material introducing parts 26 and 27. Can be separated so as to be lifted from the support plate 233. Therefore, after the general-purpose part A is attached to the platens 2 and 3, the support plate 2 is supported by the common conveying means 251.
Only 33 can be easily retracted outside the molding machine.

In the method for changing the molding die of the present invention, the molding dies are predetermined with respect to the platens 2 and 3 by fitting the molding material introducing portions 26 and 27 as described above to each other. The support plate 233 can be easily and reliably moved out of the molding machine after the general-purpose part A is attached to each platen 2 and 3, because the support plate 233 is positioned at the height of the platen 2 and is separated from the support plate 233. Therefore, it is possible to efficiently change the stage of the molding die. The method of changing the molding die of the present invention is not limited to the embodiment in which the molding die is divided into the dedicated portion and the general-purpose portion as described above, and is conventionally used. It can also be applied to changing the stage of the existing molding die.

[0079]

Since the present invention is constructed in this way, it is possible to shorten the time required for the die changing work, improve the movability of the molding machine, and suppress the increase in product cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a die casting machine to which the present invention is applied.

FIG. 2 is a plan view showing a stage changing means of a dedicated section.

FIG. 3 is an enlarged plan view of an essential part of FIG.

FIG. 4 is a view on arrow I of FIG.

5 is a view taken along the arrow II in FIG.

FIG. 6 is an arrow view III in FIG.

FIG. 7 is an embodiment of a fixed side clamper that detachably holds the fixed side insert and the fixed side main mold, and a ball lock mechanism of an integrated unit that integrates the fixed side insert and the movable side insert. FIG.

FIG. 8 is a partial cross-sectional view showing the ball lock mechanism of FIG. 7 in an enlarged manner.

FIG. 9 is a partial cross-sectional view showing an enlarged clamper.

FIG. 10 is a side view of FIG. 9.

FIG. 11 is a cross-sectional view for explaining the configuration of a slide actuator.

FIG. 12 is a cross-sectional view for explaining a configuration of a slide core and a slide holder.

FIG. 13 is a plan view for explaining a space holding mechanism.

FIG. 14 is a front view of FIG.

FIG. 15 is an explanatory diagram showing the deflection of the base plate.

FIG. 16 is an explanatory view showing a state in which the deflection of the base plate is corrected by the correction means and the pin of the positioning means is engaged with the hole. ,

FIG. 17 is an enlarged cross-sectional view for explaining the structure of a rolling bearing.

FIG. 18 is a cross-sectional view showing a ball lock mechanism provided on the moving body of the mold transfer means.

FIG. 19 is a partially enlarged view showing a state in which the integrated dedicated unit is taken out from the general-purpose unit.

FIG. 20 is a partially enlarged view showing a state in which the integrated exclusive portion is being drawn into the concave portion of the general-purpose portion.

FIG. 21 is a partially enlarged view showing a state in which the integrated dedicated portion is pulled into the concave portion of the general-purpose portion.

FIG. 22 is a cross-sectional view showing a state where the molding die is opened.

FIG. 23 is a cross-sectional view showing a closed state of the molding die.

FIG. 24 is a cross-sectional view shown for explaining a state in which the shoulder of the slide holder is slightly fitted in the rim portion of the concave portion of the fixed main mold.

FIG. 25 is a cross-sectional view for explaining a state immediately before fitting the fixed-side insert of the integrated dedicated section into the recess of the fixed-side main mold.

FIG. 26 is a front view showing a movable-side insert holding a slide core.

FIG. 27 is a partial cross-sectional view showing a dedicated part integrally connected.

FIG. 28 is a cross-sectional view for explaining a stage change of a general-purpose part.

FIG. 29 is a plan view showing an embodiment of a support plate.

30 is a front view of FIG. 29. FIG.

FIG. 31 is a side view of FIG. 29.

FIG. 32 is an explanatory diagram showing, in a simplified form, an embodiment of a method for changing the stage of a general-purpose part according to the present invention.

[Explanation of symbols]

1 die casting machine 2 Fixed platen 3 movable platen 11 Fixed mold 12 movable mold 14 slides 15 Fixed side main mold (general-purpose part) 16 Fixed side insert (dedicated part) 17 Movable side main mold (general-purpose part) 18 Moveable side insert (dedicated part) 22 Slide holder (general-purpose part) 23 Slide core (dedicated part) 31, 32 Clamp device (detachment mechanism) 104 Slide core attachment / detachment mechanism 200 step changer 201 Dedicated section change means 231 General-purpose section changing means 233 Support plate 239 cutout 251 Common transportation means 253 Base plate 300 carrier 301, 302, 303, 304, 305, 306 Drive roller 400 relay stand

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) B22C 9/10 B22C 9/10 S B29C 33/30 B29C 33/30

Claims (4)

[Claims] 1. A molding die comprising a common general-purpose part held by a platen, a dedicated part for forming a cavity, and an attachment / detachment mechanism for detachably holding the dedicated part on the general-purpose part. The step changer has a step changer for the dedicated section, a step changer for the general-purpose section, and a conveying means common to both step changers. The changing means has a base plate placed on the carrying means, and the supporting plate that supports the step changing means of the general-purpose part at a height that is placed on the carrying means and can hold the general-purpose part on the platen. A stage changing device for a molding die, characterized in that a gap into which a base plate or a support plate can be inserted is formed below the general-purpose part. 2. The dedicated part of the molding die includes a slide core, the general-purpose part includes an actuator for driving the slide core in the mold opening / closing direction, and the actuator is arranged so as to project toward the conveying means. The step changer for a molding die according to claim 1, wherein the support plate is shaped so as to avoid it without interfering with the actuator. 3. The general-purpose part and the platen are provided with a positioning mechanism for positioning the general-purpose part with respect to the platen by being fitted to each other so as to separate the general-purpose part from the support plate placed on the conveying means. The stage changing device for the molding die according to claim 1 or 2. 4. A molding die having a positioning mechanism between the molding die and the platen, which are fitted to each other by closing the die to position the molding die at a predetermined position with respect to the platen. A support plate that supports the mold and is placed on the conveying means and is moved between the inside and outside of the molding machine is provided, and the support plate has a height at which the positioning mechanism between the molding die and the platen can fit. Configured to support the mold,
A step change method of a molding die, which is configured to separate the molding die from a support plate when the positioning mechanisms are fitted to each other. The mold is supported, the support plate is moved into the molding machine by the conveying means, the mold is closed, the positioning mechanism of the mold and the platen is fitted, and the mold is separated from the support plate. A method of changing the stage of a molding die, characterized in that the support plate is moved to the outside of the molding machine by a conveying means.