JP2010137233A - Molding die and method for assembling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a step change efficient, and to avoid any increase in size of a die in the case that a fixed die and a movable die are split into an exclusive member and a general member, and a slide die is provided on the exclusive member. <P>SOLUTION: When an exclusive member 21 having a slide die 23 is attached/detached to/from a recessed part 22a, as the exclusive member 21 and the general member 22 are relatively moved in the advancing/separating direction A, an end of a shaft member 72 is advanced into an engagement passage 60, or retracted from the engagement passage 60, thereby the shaft member 72 and the slide die 23 are engaged/disengaged with/from each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a molding die and a method for assembling the same, and belongs to the technical field of improvement of setup change accompanying die replacement.

  In recent years, with the generalization of high-mix low-volume production in a production line, for example, in a casting factory such as a cylinder block of an automobile engine, there is a tendency that the frequency of changeover accompanied with die change increases. In order to reduce cycle time, achieve complex product shapes, and achieve high dimensional accuracy for thin-walled parts, for example, in high pressure die casting, high temperature molten aluminum alloy is filled into the cavity at high speed and pressure. Is done. Therefore, there is a case where the frequency of changeover accompanied with mold replacement increases due to the severe wear of the mold and shortening of the mold life.

  Therefore, conventionally, the fixed mold and the movable mold are divided into a dedicated member having a cavity forming surface and a general-purpose member not having a cavity forming surface. It is known to reduce the cost and mold cost.

  Specifically, the general-purpose member is provided with a concave portion that opens to the contact surface side (mating surface side) of the fixed mold and the movable mold, and the dedicated member extends in the direction of contact and separation between the fixed mold and the movable mold. It is detachably fitted. In this case, the fixed-type dedicated member or the movable-type dedicated member may be provided with a slide mold that moves in a direction perpendicular to the contact / separation direction and forms part of the cavity.

  In Patent Document 1, a cylinder drive shaft for moving the slide mold in a direction orthogonal to the contact / separation direction is connected to a general-purpose member that fits a dedicated member provided with the slide mold. It is disclosed that it is provided extending in a direction orthogonal to the separating direction. A T-shaped clamp is provided at the end of the drive shaft on the slide mold side, and the slide mold is assembled to a dedicated member at the time of changeover, and the dedicated member is brought into contact with the bottom surface of the concave portion of the general-purpose member. After moving in the separating direction and fitting in the recess, the T-shaped clamp at the end of the drive shaft is moved in the axial direction, and the T-shaped provided on the outer surface of the slide type in the moving direction It is disclosed that the drive shaft is coupled to the slide mold by entering the slot and then rotating the T-shaped clamp 90 degrees about the axis. Here, a rack and pinion mechanism is provided to rotate the T-shaped clamp around the axis.

Japanese Patent No. 3794323 (paragraphs 0029, 0030, 0049)

  However, in the prior art, at the time of changeover, after the dedicated member assembled with the slide mold is fitted into the recess of the general-purpose member, the cylinder drive shaft is moved and rotated again, so the number of operations increases. The time required for the changeover becomes longer. In addition to the cylinder for moving the drive shaft in the direction perpendicular to the contact / separation direction, a rack and pinion mechanism for rotating the drive shaft around the shaft is required, which increases the size and cost of the mold. Will be invited.

  In view of this, the present invention divides the fixed mold and the movable mold into a dedicated member and a general-purpose member, and when the dedicated member is provided with a slide mold, it is possible to improve the efficiency of changeover and avoid the enlargement of the mold. The problem is to plan.

  In order to solve the above problems, the present invention uses the following means. In the following disclosure of the present invention, reference numerals used in the embodiments of the invention described later are added for reference.

  First, the invention according to claim 1 of the present application is that the fixed mold 10 and the movable mold 20 include dedicated members 11 and 21 having cavity forming surfaces 11a and 21a and general-purpose members 12 and 22 having no cavity forming surfaces. The dedicated members 11 and 21 are detachably fitted in the contact and separation direction A of the fixed mold 10 and the movable mold 20 with respect to the recesses 12a and 22a provided in the general-purpose members 12 and 22, and At least one of the dedicated member 11 of the fixed mold 10 or the dedicated member 21 of the movable mold 20 is provided with a slide mold 23 that moves in a direction B perpendicular to the contact / separation direction A and constitutes a part of the cavity C. A general-purpose part in which the shaft member 72 for engaging with the slide mold 23 and moving the slide mold 23 in the orthogonal direction B is fitted with the dedicated member 21 provided with the slide mold 23 22 is a molding die provided so as to be movable in the orthogonal direction B. A diameter-enlarging portion 73 is provided at an end of the shaft member 72 on the slide die 23 side. An engagement passage 60 composed of a first cavity portion 61 into which the diameter portion 73 can enter and a second cavity portion 62 into which the shaft member 72 in the vicinity of the enlarged diameter portion can enter is in the contact / separation direction A. The engagement passage 60 is extended to the side opposite to the mating surface of the slide mold 23, and the second cavity 62 is opened to the movement direction outer surface 23a of the slide mold 23, so that the slide When the dedicated member 21 provided with the mold 23 is attached to and detached from the recess 22a, the dedicated member 21 and the general-purpose member 22 move relative to each other in the contact / separation direction A, and the shaft member The end of 72 is the engagement passage 60. By exiting from the entry or the engagement passage 60, and the shaft member 72 and the slide mold 23 is characterized in that the engagement or the engagement is released.

  Next, the invention according to claim 2 of the present application is that, in the molding die according to claim 1, the height of the first cavity portion 61 is larger than the thickness of the enlarged diameter portion 73. Features.

  Next, the invention according to claim 3 of the present application is the molding die according to claim 1 or 2, wherein the end of the shaft member 72 on the side opposite to the enlarged diameter portion passes through the general-purpose member 22. It is connected to an actuator 71 provided on the outer surface of the general-purpose member 22.

  Next, in the invention described in claim 4 of the present application, the fixed mold 10 and the movable mold 20 include dedicated members 11 and 21 having cavity forming surfaces 11a and 21a, and general-purpose members 12 and 22 having no cavity forming surfaces. The dedicated members 11 and 21 are detachably fitted in the contact / separation direction A of the fixed mold 10 and the movable mold 20 with respect to the recesses 12a and 22a provided in the general-purpose members 12 and 22, and At least one of the dedicated member 11 of the fixed mold 10 or the dedicated member 21 of the movable mold 20 has a slide mold 23 that moves in a direction B perpendicular to the contact / separation direction A and constitutes a part of the cavity C. A general-purpose part that is provided with a shaft member 72 that engages with the slide mold 23 and moves the slide mold 23 in the orthogonal direction B is fitted with the dedicated member 21 provided with the slide mold 23. 22 is a method for assembling a molding die that is movably provided in the orthogonal direction B. A diameter-enlarging portion 73 is provided at an end portion of the shaft member 72 on the slide die 23 side. The engagement passage 60 including the first cavity portion 61 into which the enlarged diameter portion 73 can enter and the second cavity portion 62 into which the shaft member 72 in the vicinity of the enlarged diameter portion can enter is separated from the contact and separation. Extending in the direction A, the engagement passage 60 is opened to the counter mating surface side of the slide mold 23, and the second cavity 62 is opened to the movement direction outer surface part 23 a of the slide mold 23. When the dedicated member 21 provided with the slide mold 23 is attached to and detached from the recess 22a, the dedicated member 21 and the general-purpose member 22 move relative to each other in the contact / separation direction A. The end portion of the shaft member 72 is the engagement member. By using a molding die in which the shaft member 72 and the slide mold 23 are engaged with each other by entering the passage 60 or withdrawing from the engagement passage 60, the slide mold 23 is removed. The step of assembling to the dedicated member 21, the position of the end of the shaft member 72 in the movement direction B of the slide mold 23 at the position of the engagement passage 60 when the dedicated member 21 is fitted into the recess 22a. The step of moving the shaft member 72 so as to coincide with each other, and the step of moving the dedicated member 21 to the bottom surface side of the concave portion 22a and fitting it into the concave portion 22a are characterized.

  Next, the invention according to claim 5 of the present application is the method for assembling the molding die according to claim 4, wherein the height of the first cavity portion 61 is set to be higher than the thickness of the enlarged diameter portion 73. In the step of fitting the dedicated member 21 into the recess 22a, a gap s is formed between the enlarged diameter portion 73 and the first cavity portion 61 in the thickness direction of the enlarged diameter portion 73. However, the exclusive member 21 is moved to the bottom surface side of the recess 22a.

  First, according to the invention described in claim 1 of the present application, the fixed mold 10 and the movable mold 20 are divided into the dedicated members 11 and 21 and the general-purpose members 12 and 22, and are slid to at least one of the dedicated members 11 and 21. A molding die provided with the mold 23 is provided.

  In this case, a shaft member 72 that engages with the slide mold 23 and moves the slide mold 23 in a direction B perpendicular to the contact / separation direction A of the fixed mold 10 and the movable mold 20 includes the slide mold 23. The general-purpose member 22 to which the dedicated member 21 provided with is fitted is provided so as to be movable in the orthogonal direction B. Further, an enlarged diameter portion 73 is provided at an end portion of the shaft member 72 on the slide mold 23 side, the first cavity portion 61 into which the enlarged diameter portion 73 can enter the slide mold 23, and the expanded diameter portion. An engagement passage 60 including a second cavity portion 62 into which the shaft member 72 in the vicinity of the diameter portion can enter extends in the contact / separation direction A. The engagement passage 60 is opened on the side of the mating surface of the slide mold 23, and the second cavity 62 is opened in the movement direction outer surface 23 a of the slide mold 23.

  When the dedicated member 21 provided with the slide mold 23 is attached to or detached from the recess 22a, the dedicated member 21 and the general-purpose member 22 move relative to each other in the contact / separation direction A. When the end of the shaft member 72 enters or exits the engagement passage 60, the shaft member 72 and the slide mold 23 are engaged or disengaged. As a result, the operation of exchanging only the dedicated members 11 and 21 at the time of changing the stage, that is, the operation of moving the dedicated members 11 and 21 in the contact-and-separation direction A engages the shaft member 72 with the slide mold 23 as it is. The operation of removing the shaft member 72 from the slide mold 23 does not increase the time required for the changeover, and the changeover is performed efficiently.

  In addition, since the shaft member 72 is not rotated, a mechanism for rotating the shaft member 72 is not required, and the size and cost of the mold are not increased.

  Next, according to the invention described in claim 2 of the present application, since the height of the first cavity portion 61 is made larger than the thickness of the enlarged-diameter portion 73, the enlarged-diameter portion 73 is changed at the time of changeover. In the thickness direction, friction between the enlarged diameter portion 73 and the first cavity portion 61 is avoided, thereby avoiding wear of the member and suppressing a decrease in durability of the member.

  Next, according to the invention described in claim 3 of the present application, the actuator 71 provided on the outer surface of the general-purpose member 22 through the general-purpose member 22 through the end on the side opposite to the enlarged diameter of the shaft member 72. Therefore, it is difficult to remove the shaft member 72 from the general-purpose member 22. Therefore, the slide mold 23 and the shaft member 72 are efficiently engaged with each other at the time of changeover while leaving the shaft member 72 on the general-purpose member 22 side. The engagement or the engagement can be released, and the effect of the present invention becomes more remarkable.

  Next, according to the invention described in claim 4 of the present application, using the molding die described in claim 1, the slide mold 23 is assembled to the dedicated member 21, and the dedicated member 21 is fitted into the recess 22a. The shaft member 72 is moved so that the position of the end portion of the shaft member 72 coincides with the position of the engagement passage 60 in the movement direction B of the slide mold 23, and the dedicated member 21 is moved to the bottom surface side of the recess 22a. Since it is moved and fitted into the recess 22a, the replacement operation of only the dedicated members 11 and 21 at the time of the changeover, that is, the dedicated members 11 and 21 in the contact and separation direction, as in the invention of claim 1. The operation of moving to A is the operation of engaging the shaft member 72 with the slide mold 23 as it is, or the operation of removing the shaft member 72 from the slide mold 23, and the time required for the changeover is not increased, and the changeover is efficient. Well done It becomes Rukoto.

  Next, according to the invention described in claim 5 of the present application, when the dedicated member 21 is fitted into the recess 22a using the molding die described in claim 2, the thickness direction of the enlarged diameter portion 73 is determined. Since the dedicated member 21 is moved to the bottom surface side of the concave portion 22a while forming the gap s between the enlarged diameter portion 73 and the first cavity portion 61 in the same manner as in the invention according to claim 2, At the time of changeover, in the thickness direction of the enlarged diameter portion 73, friction between the enlarged diameter portion 73 and the first cavity portion 61 is avoided, thereby avoiding wear of the member and reducing durability of the member. Can be suppressed.

  FIG. 1 is a cross-sectional view schematically showing the arrangement of main components of a die casting machine 1 according to the best mode of the present invention from the side, wherein (a) shows a mold open state, (b) Indicates a clamping state.

  This die casting machine 1 is a high pressure die casting machine for casting a cylinder block of an automobile engine, and is made of an aluminum alloy in order to shorten the cycle time, realize a complicated product shape, realize a high dimensional accuracy of a thin part, etc. The high-temperature molten metal is filled into the cavity C at high speed and high pressure. Therefore, there is a tendency that the frequency of changeover accompanied with mold replacement tends to increase due to severe wear of the mold and shortening of the mold life.

  Therefore, in this die casting machine 1, the fixed mold 10 is divided into a core 11 as a dedicated member having a cavity forming surface 11a and a holder 12 as a general-purpose member having no cavity forming surface. Similarly, the movable die 20 is also divided into a core 21 as a dedicated member having a cavity forming surface 21a and a holder 22 as a general-purpose member having no cavity forming surface. Further, by changing only the cores 11 and 21 at the time of changing the settings, the changing work is facilitated, the die cost is reduced, and the like.

  In this die casting machine 1, the movable mold 20 has a core 21 that moves in a direction B perpendicular to the contact / separation direction A of the fixed mold 10 and the movable mold 20 to constitute a part of the cavity C. Two molds 23 are provided on the upper and lower sides.

  Here, generally when referring to a mold or a molding mold, the fixed mold 10 and the movable mold 20 including the cores 11 and 21, the holders 12 and 22, and the slide mold 23 are collectively referred to.

  That is, in this embodiment, the die casting machine 1 has a machine base 2 on which a square wall-like fixed platen 3 and a square wall-like fixed block 4 are spaced apart from each other at a predetermined interval. It is standing and facing up. Between the fixed platen 3 and the fixed block 4, four tie bars 5 ... 5 (only two are shown in FIG. 1) are installed horizontally. Each tie bar 5 is arranged in the vicinity of each corner of the square wall-shaped fixed platen 3 and fixed block 4 so as to be separated from each other (see FIGS. 5 and 9).

  Further, a square wall-shaped movable platen 6 is erected on these tie bars 5... 5 so as to be opposed to the fixed platen 3 and the fixed block 4. A drive rod 7 is connected to the back surface of the movable platen 6, and the movable platen 6 is moved in the horizontal direction along the tie bars 5... 5 by an appropriate actuator, for example, a hydraulic cylinder 8. It is moved in the contact / separation direction A.

  The fixed mold 10 and the movable mold 20 are assembled to the mutually facing surfaces of the fixed platen 3 and the movable platen 6, respectively. More specifically, the holders 12 and 22 of the fixed mold 10 and the movable mold 20 are coupled to the fixed platen 3 and the movable platen 6, and the cores 11 and 21 and the slide mold are respectively disposed on the opposing surfaces of the holders 12 and 22. Is detachably held.

  When the molds are in contact, that is, when the molds are clamped, the opposing surfaces of the cores 11 and 21 and the slide mold 23 are in contact with each other as shown in FIG. The cavity C is formed by the slide mold 23.

  When the mold is separated, that is, when the mold is opened, as shown in FIG. 1A, the slide mold 23 moves in the vertical direction (slide mold movement direction) B, and the cavity forming surface 21 a of the core 21 of the movable mold 20. Evacuate from.

  Next, FIG. 2 shows the operation of exchanging the cores 11 and 21 and the slide mold 23 at the time of changing the die-casting machine 1, more specifically, the operation of attaching the holders 12 and 22 to (a), (b), ( It is sectional drawing schematically illustrated from a side surface in order of c).

  The holders 12 and 22 of the fixed mold 10 and the movable mold 20 are provided with recesses 12a and 22a that are open on opposite sides of each other, and the cores 11 and 21 and the slide mold 23 are made of gold against the recesses 12a and 22a. The mold is detachably fitted in the contact / separation direction A of the mold.

  Although individual details will be described later, the operation of fitting the cores 11 and 21 and the slide mold 23 into the recesses 12a and 22a will be outlined. First, as shown in FIG. 2A, the holders 12 and 22 from which the cores 11 and 21 and the slide mold 23 are removed are separated from each other. The changeover device 30 is carried between the separated holders 12 and 22. The change-over device 30 is a carry-in conveyor 31 that extends horizontally in a direction perpendicular to the contact / separation direction A, and a fitting conveyor that is placed on the carry-in conveyor 31 and extends horizontally in the contact / separation direction A (see FIG. Examples include a roller conveyor 32.

  The core 11 of the fixed mold 10, the core 21 of the movable mold 20, and the slide molds 23, 23 are integrally coupled in advance so as to form a cavity C (unit U). In a state where the coupling unit U is placed on the fitting conveyor 32, the whole of the coupling unit U and the fitting conveyor 32 is carried between the holders 12 and 22 from the outside of the die casting machine 1 by the loading conveyor 31. Is done.

  As shown in FIG. 2B, the pusher 33 belonging to the changeover device 30 presses the coupling unit U toward the holder 12 of the fixed mold 10, and the core 11 of the fixed mold 10 in the coupling unit U is fixed to the fixed mold 10. It fits into the recess 12 a of the holder 12.

  As shown in FIG. 2C, when the back wall of the core 11 of the fixed mold 10 abuts against the bottom wall of the recess 12a, the fitting of the core 11 to the recess 12a is completed on the fixed mold 10 side. The change-over device 30 is carried out of the die casting machine 1.

  Next, the holder 22 of the movable mold 20 is moved to the mold clamping side, and the core 21 and the slide mold 23 of the movable mold 20 in the coupling unit U are fitted into the recess 22 a of the holder 22 of the movable mold 20. When the back wall of the core 21 of the movable mold 20 comes into contact with the bottom wall of the recess 22a, the engagement of the core 21 and the slide mold 23 with the recess 22a is completed on the movable mold 20 side. The situation at this time is similar to that shown in FIG.

  When the coupling of the coupling unit U is released, the cores 11 and 21 and the slide mold 23 are held by the holders 12 and 22 in the fixed mold 10 and the movable mold 20, respectively. Since the situation at this time is similar to that shown in FIG. 1A, the illustration is omitted (the slide mold 23 advances to the cavity forming surface 21a of the core 21 of the movable mold 20).

  In this way, the cores 11 and 21 and the slide mold 23 are not separately held by the holders 12 and 22 in the fixed mold 10 and the movable mold 20, but the cores 11 and 21 and the slide mold 23 are previously attached to the coupling unit U. Since the unit U is released after being integrated with the holders 12 and 22, the cavity C is accurately formed when the fixed mold 10 and the movable mold 20 are clamped. .

  Note that the operation of removing the cores 11 and 21 and the slide mold 23 from the holders 12 and 22 when the die casting machine 1 is changed over is substantially the reverse of the above-described mounting operation.

  Next, FIG. 3 is a side view showing a stage in which the coupling unit is moved toward the fixed-type holder when the die-casting machine is changed, and FIG. FIG. 5 is a schematic view seen from the direction of the arrow v in FIG. 4, and FIG. 6 shows the stage in which the coupling unit is fitted to the concave portion of the movable holder up to a predetermined position. FIGS. 7A and 7B are side views showing a stage in which the fitting to the movable core and the slide-type recess is completed.

  When the cores 11 and 21 are fitted in the recesses 12a and 22a, the lateral walls of the cores 11 and 21 and the side walls of the recesses 12a and 22a face each other. Are provided with holes 42... 42 extending vertically in a direction orthogonal to the contact / separation direction A.

  A through hole extending vertically in the direction orthogonal to the contact / separation direction A is provided on the upper and lower side walls of the recesses 12a, 22a, and the through hole extends vertically in the direction orthogonal to the contact / separation direction A. The extending rod members 41... 41 are fitted, and the rod members 41... 41 are moved in the vertical direction along the through hole, that is, in the direction perpendicular to the contact / separation direction A, by an actuator (not shown) such as a hydraulic cylinder. .

  As a result, the rod members 41... 41 can move freely between a state where they have advanced from the side walls into the recesses 12a and 22a (see FIGS. 4 to 9) and a state where they have retracted into the side walls (see FIGS. 3 and 6). Has been. When the cores 11 and 21 are engaged with the recesses 12a and 22a, the bar members 41... 41 enter the holes 42.

  The coupling unit U is integrated by a coupling mechanism 50. That is, in this embodiment, the coupling mechanism 50 includes a plate assembled to the side surface of the core 11 on the fixed die 10 side by a bolt and the side surface of the core 21 on the movable die 20 side with the plate interposed therebetween. And a connecting pin to be inserted.

  The fixed mold 10 and the movable mold 20 are provided with a positioning mechanism when the coupling unit U starts to be fitted into the recesses 12a and 22a. That is, a plurality of roller followers 51... 51 are arranged in a row in the fitting direction on the upper side of the cores 11 and 21 in the coupling unit U and on the left and right lateral walls. Correspondingly, a pair of guide rails 52, 52 are arranged extending in the fitting direction on the upper and left and right side walls of the recesses 12 a, 22 a of the holders 12, 22. 4 and FIG. 6, when the roller followers 51... 51 enter between the guide rails 52, 52, the coupling unit U when the coupling unit U is fitted into the recesses 12a, 22a. The positions with respect to the recesses 12a and 22a are determined.

  Further, taper plates 53... 53 are provided on the upper and lower and left and right lateral walls of both the cores 11 and 21, and correspondingly, taper bases 54... Are formed on the upper and lower and left and right side walls of the recesses 12 a and 22 a of the holders 12 and 22. 54 is arranged. By the cooperation of these 53... 53, 54... 54, the coupling unit U is drawn into the central portion of the recesses 12a and 22a, and the coupling unit U at the stage where the fitting of the coupling unit U to the recesses 12a and 22a has progressed. Positioning with respect to the recesses 12a and 22a is promoted.

  Reference numeral 55 denotes a tapered surface of the upper and lower edges of the recess 12a that comes into contact with the slide mold 23 during mold clamping.

  And the surface by the side of the bottom wall of the recessed parts 12a and 22a in the hole part 42 is made into the taper surface. Further, the surfaces on the bottom wall side of the recesses 12a and 22a in the bar member 41 are also tapered surfaces. Then, the bar member 41 is moved in the vertical direction, and as shown in FIGS. 4, 6, 7, advances into the recesses 12 a, 22 a and enters the holes 42 of the cores 11, 21. Thereby, the taper surfaces of the hole 42 and the bar member 41 are in contact with each other. As a result, the coupling unit U moves to the bottom wall side of the recesses 12a and 22a at a relatively slow speed, and finally the back walls of the cores 11 and 21 abut against the bottom walls of the recesses 12a and 22a. The cores 11 and 21 are pressed against the bottom wall and firmly pulled into the recesses 12 a and 22 a, so that the cores 11 and 21 are stably held by the holders 12 and 22.

  At the stage where the fitting on the movable mold 20 side is completed, the coupling pin of the coupling mechanism 50 is removed and the coupling of the coupling unit U is released, as is apparent in FIG.

  In this embodiment, as shown in FIGS. 6 to 9, the slide mold 23 is engaged with the slide mold 23, and the slide mold 23 is orthogonal to the contact / separation direction A of the fixed mold 10 and the movable mold 20. A shaft member 72 for moving in B (vertical direction: slide type moving direction) is provided on the general-purpose member 22 to which the dedicated member 21 provided with the slide mold 23 is fitted so as to be movable in the orthogonal direction B. It has been.

  A diameter-enlarged portion 73 is provided at the end of the shaft member 72 on the slide mold 23 side. On the other hand, as shown in FIG. 10, the slide mold 23 has a first cavity 61 in which the enlarged diameter portion 73 can enter and a second cavity in which the shaft member 72 in the vicinity of the enlarged diameter portion can enter. An engagement passage 60 formed of a portion 62 extends in the contact / separation direction A.

  As shown in FIG. 10, the engagement passage 60 opens to the counter mating surface side of the slide mold 23, and the second cavity 62 is the movement direction outer side surface portion 23 a of the slide mold 23. Is open.

  6 and 7, when the dedicated member 21 provided with the slide mold 23 is attached to and detached from the recess 22a, the dedicated member 21 and the general-purpose member 22 are The relative movement is made in the contact / separation direction A. With this relative movement, the end of the shaft member 72 on the enlarged diameter portion 73 side enters the engagement passage 60 or the engagement passage 60. Will leave. As a result, the shaft member 72 and the slide mold 23 are engaged or disengaged.

  In the present embodiment, the step of assembling the slide mold 23 to the dedicated member 21 (see FIG. 3) and the position of the engagement passage 60 when the dedicated member 21 is fitted into the recess 22a. The step of moving the shaft member 72 so that the position of the end portion of the shaft member 72 coincides in the moving direction B of the slide mold 23 (see FIG. 6), and the dedicated member 21 is moved to the bottom surface side of the recess 22a. And the step (see FIG. 7) of fitting into the recess 22a.

  Here, reference numeral 71 is a hydraulic cylinder as a drive source for the shaft member 72 and the slide mold 23, reference numeral 70 is a bracket for providing the hydraulic cylinder 71 on the outer surface of the general-purpose member 22, and reference numeral 76 is a good slide mold 23. Therefore, as shown in FIG. 6 and the like, the end of the shaft member 72 on the side opposite to the enlarged diameter 73 has the space 76 as shown in FIG. And is connected to a hydraulic cylinder 71 provided on the outer surface of the general-purpose member 22.

  Reference numeral 75 denotes a groove formed in the mating surface portion of the core 21 so that the slide mold 23 moves up and down satisfactorily, and reference numerals 58 and 59 denote the void 76 so that the slide mold 23 moves up and down satisfactorily. And a concave groove and a convex strip which are provided on the slide mold 23 and fit to each other. This prevents the slide mold 23 from being positioned relative to the cavity C and the slide mold 23 provided exposed on the mating surface portion of the core 21 from falling off the core 21.

  Further, as clearly shown in FIG. 10A, the height of the first cavity portion 61 is formed to be larger than the thickness of the enlarged-diameter portion 73, and the dedicated member 21 is fitted into the concave portion 22a. In some cases, a gap s is formed between the enlarged diameter portion 73 and the first cavity portion 61 in the thickness direction of the enlarged diameter portion 73. Then, the exclusive member 21 is moved to the bottom surface side of the recess 22a while forming the gap s.

  Note that when the die casting machine 1 is replaced, the operation of attaching the cores 11 and 21 and the slide mold 23 to the holders 12 and 22 and the operation of removing them from the holders 12 and 22 are generally opposite to each other.

  As described above, in the present embodiment, the fixed mold 10 and the movable mold 20 are divided into the dedicated members 11 and 21 and the general-purpose members 12 and 22, and the slide mold 23 is provided on at least one of the dedicated members 11 and 21. Molds for molding are provided.

  In this case, a shaft member 72 that engages with the slide mold 23 and moves the slide mold 23 in a direction B perpendicular to the contact / separation direction A of the fixed mold 10 and the movable mold 20 includes the slide mold 23. The general-purpose member 22 to which the dedicated member 21 provided with is fitted is provided so as to be movable in the orthogonal direction B. Further, an enlarged diameter portion 73 is provided at an end portion of the shaft member 72 on the slide mold 23 side, the first cavity portion 61 into which the enlarged diameter portion 73 can enter the slide mold 23, and the expanded diameter portion. An engagement passage 60 including a second cavity portion 62 through which the shaft member 72 in the vicinity of the diameter portion can enter extends in the contact / separation direction A. The engagement passage 60 is opened on the side of the mating surface of the slide mold 23, and the second cavity 62 is opened in the movement direction outer surface 23 a of the slide mold 23.

  When the dedicated member 21 provided with the slide mold 23 is attached to or detached from the recess 22a, the dedicated member 21 and the general-purpose member 22 move relative to each other in the contact / separation direction A. When the end of the shaft member 72 enters or exits the engagement passage 60, the shaft member 72 and the slide mold 23 are engaged or disengaged. Therefore, the operation of exchanging only the dedicated members 11 and 21 at the time of the changeover, that is, the operation of moving the dedicated members 11 and 21 in the contact / separation direction A directly engages the shaft member 72 with the slide mold 23. The operation to be combined, or the operation to remove the shaft member 72 from the slide mold 23, does not increase the time required for the changeover, and the changeover is performed efficiently.

  That is, in the present embodiment, the molding die having the above-described configuration is used to attach the slide mold 23 to the dedicated member 21 and place the shaft at the position of the engagement passage 60 when the dedicated member 21 is fitted into the recess 22a. The shaft member 72 is moved so that the position of the end portion of the member 72 coincides in the movement direction B of the slide mold 23, and the dedicated member 21 is moved to the bottom surface side of the recess 22a to be fitted into the recess 22a. -ing

  In addition, since the shaft member 72 is not rotated, a mechanism for rotating the shaft member 72 is not required, and the size and cost of the mold are not increased.

  Further, since the height of the first cavity portion 61 is larger than the thickness of the enlarged diameter portion 73, the diameter enlarged portion 73 and the thickness in the thickness direction of the enlarged diameter portion 73 at the time of changeover. Rubbing with the first cavity portion 61 is avoided, thereby avoiding wear of the member and suppressing a decrease in durability of the member.

  That is, in the present embodiment, when the dedicated member 21 is fitted into the recess 22a using the molding die having the above-described configuration, the enlarged diameter portion 73 and the first cavity portion in the thickness direction of the enlarged diameter portion 73. The exclusive member 21 is moved to the bottom surface side of the recess 22a while forming a gap s between the recess 61a and the recess 61a.

  Further, since the end of the shaft member 72 on the side opposite to the enlarged diameter portion passes through the general-purpose member 22 and is connected to the actuator 71 provided on the outer surface of the general-purpose member 22, the shaft member 72 is separated from the general-purpose member 22. It is difficult to remove. Therefore, the effect of the present embodiment that can efficiently engage or disengage the slide mold 23 and the shaft member 72 at the time of changeover while leaving the shaft member 72 on the general-purpose member 22 side is extremely advantageous. It is remarkable.

  In the present embodiment, the core 21 of the movable mold 20 is provided with the slide mold 23. Alternatively, the core 11 of the fixed mold 10 may be provided with the slide mold 23, or both. The cores 11 and 21 of the molds 10 and 20 may be provided with the slide mold 23.

  In the present embodiment, two slide molds 23 are provided on the top and bottom, but the present invention is not limited to this, and a total of four may be provided on the top, bottom, left and right of the core.

  As described above in detail with specific examples, the present invention improves the efficiency of changeover when the fixed mold and the movable mold are divided into a dedicated member and a general-purpose member, and the dedicated member is provided with a slide mold. Therefore, it is possible to avoid the enlargement of the mold and the like. Therefore, wide industrial applicability is expected in the technical field of improvement of the changeover accompanied with the mold change.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which illustrates schematically arrangement | positioning of the main component of the die-casting machine which concerns on the best embodiment of this invention from a side surface, Comprising: (a) shows a mold open state, (b) shows a mold clamping state. It is shown. FIG. 5 is a cross-sectional view schematically showing the core and slide type exchanging operation at the time of changing the die-casting machine, more specifically, the attaching operation to the holder in the order of (a), (b) and (c). It is a side view which shows the step which a coupling unit is moved toward a fixed type holder at the time of the change of the die-casting machine. It is a side view which shows the step which the fitting to the recessed part of the core on the stationary mold side was completed. It is the schematic seen from the arrow v direction of FIG. It is a side view which shows the step by which the said coupling unit was fitted to the recessed part of the movable holder to the predetermined position. It is a side view which shows the stage which the fitting to the core of a movable type | mold and a slide-type recessed part was completed. It is a side view by the side of a movable mold | type which shows a movement of a slide mold | type. FIG. 9 is a schematic view of the movable mold as viewed from the left side to the right side of FIG. 8 (however, in FIG. 8, the slide mold is retracted from the cavity forming surface of the core, whereas in FIG. 9, the movable mold is advanced to the cavity forming surface. ing). It is explanatory drawing of a structure of a slide type | mold, Comprising: (a) is a longitudinal cross-sectional view, (b) is a top view, (c) is a rear view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Die-casting machine 10 Fixed type | mold 11 Dedicated member 11a Cavity formation surface 12 General-purpose member 12a Recessed part 20 Movable mold 21 Dedicated member 21a Cavity formation surface 22 General-purpose member 22a Recessed part 23 Slide mold 23a Slide type movement direction outer side surface part 60 Engagement path 61 1st 1 cavity portion 62 second cavity portion 72 shaft member 73 enlarged diameter portion A contact / separation direction B slide type moving direction

Claims (5)

The fixed mold and the movable mold include a dedicated member having a cavity forming surface and a general-purpose member having no cavity forming surface, and the dedicated member is a fixed mold and a movable mold with respect to the recess provided in the general-purpose member. It is detachably fitted in the contact / separation direction, and moves to at least one of the fixed type dedicated member or the movable type dedicated member in a direction perpendicular to the contact / separation direction to move a part of the cavity. A shaft member for engaging the slide die and moving the slide die in the orthogonal direction is provided on a general-purpose member to which a dedicated member provided with the slide die is fitted. A molding die provided so as to be movable in an orthogonal direction,
A diameter-expanded portion is provided at the end of the shaft member on the slide mold side,
An engagement passage composed of a first cavity part into which the enlarged diameter part can enter the slide mold and a second cavity part into which the shaft member in the vicinity of the enlarged diameter part can enter the sliding separation direction. Extended to
The engagement passage is opened on a counter mating surface side in the slide mold, and the second cavity is opened in a movement direction outer surface portion of the slide mold,
When the dedicated member provided with the slide mold is attached to and detached from the concave portion, the end of the shaft member is caused by the relative movement of the dedicated member and the general-purpose member in the contact / separation direction. The molding die, wherein the shaft member and the slide mold are engaged with each other or the engagement is released by entering the engagement passage or withdrawing from the engagement passage. In the molding die according to claim 1,
The mold for molding is characterized in that a height of the first cavity portion is larger than a thickness of the enlarged diameter portion. In the molding die according to claim 1 or 2,
An end of the shaft member on the side opposite to the enlarged diameter portion penetrates the general-purpose member and is connected to an actuator provided on the outer surface of the general-purpose member. The fixed mold and the movable mold include a dedicated member having a cavity forming surface and a general-purpose member having no cavity forming surface, and the dedicated member is a fixed mold and a movable mold with respect to the recess provided in the general-purpose member. It is detachably fitted in the contact / separation direction, and moves to at least one of the fixed type dedicated member or the movable type dedicated member in a direction perpendicular to the contact / separation direction to move a part of the cavity. A shaft member for engaging the slide die and moving the slide die in the orthogonal direction is provided on a general-purpose member to which a dedicated member provided with the slide die is fitted. A method for assembling a molding die provided so as to be movable in an orthogonal direction,
A diameter-expanded portion is provided at the end of the shaft member on the slide mold side,
An engagement passage composed of a first cavity part into which the enlarged diameter part can enter the slide mold and a second cavity part into which the shaft member in the vicinity of the enlarged diameter part can enter the sliding separation direction. Extended to
The engagement passage is opened on a counter mating surface side in the slide mold, and the second cavity is opened in a movement direction outer surface portion of the slide mold,
When the dedicated member provided with the slide mold is attached to and detached from the concave portion, the end of the shaft member is caused by the relative movement of the dedicated member and the general-purpose member in the contact / separation direction. Using a molding die in which the shaft member and the slide mold are engaged with each other or the engagement is released by entering or exiting the engagement passage,
Assembling the slide mold to the dedicated member;
Moving the shaft member so that the position of the end of the shaft member coincides with the position of the engagement passage when the dedicated member is fitted in the recess; and
A method for assembling a molding die, comprising the step of moving the dedicated member to the bottom surface side of the recess and fitting the recess into the recess. In the assembly method of the molding die according to claim 4,
Forming a height of the first cavity portion larger than a thickness of the enlarged diameter portion;
In the step of fitting the dedicated member into the recessed portion, the dedicated member is placed on the bottom surface of the recessed portion while forming a gap between the expanded diameter portion and the first cavity portion in the thickness direction of the expanded diameter portion. A method for assembling a mold for molding, wherein the mold is moved to the side.

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