JP2012011435A - Insert mounting structure for die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the insert mounting structure for a die which can remarkably shorten a time taken for removing and assembling of an insert upon die maintenance for improving maintenance efficiency of the die.SOLUTION: In the insert mounting structure 10 for the die 11, the insert 14 is fitted to a recessed part 13a provided at the main die 13 to be mounted. The structure includes: a clamper 15 mounted on a through-hole 13c provided to the side wall part 13b of the main die 13 and clamping the side wall part 14a of the insert 14 from the horizontal direction; and an inserting/removing means 16 of inserting/removing the clamper 15.

Description

  The present invention relates to a mold insert mounting structure for fitting a insert into a recess provided in a main mold.

  In general, a die (die casting die) used in a die casting machine is mainly composed of a die base, a main die having a concave portion fixed to the die base, and a nest fitted in the concave portion of the main die. Has been. In general, a hydraulic cylinder, a slide core, and the like are attached to the main mold, and an extrusion plate, an extrusion guide pin, a cooling component, a cast pin, and the like are attached to the insert. Such a mold is also described in Patent Document 1 and the like.

Japanese Patent Laid-Open No. 10-323836

  In general, to fix the insert of a large die casting mold, the insert is tightened with a bolt from the back of the main mold. The reason why the insert cannot be tightened from the front of the main mold is that the tightening hole cannot be placed in the rough material shape field, the release resistance of the rough material (cast product) can be satisfied, and the well-balanced tightening hole cannot be placed. Because. Moreover, even if the insert from the front of the main mold can be tightened, aluminum or the like is inserted into the tightening hole, which tends to cause burrs.

  For this reason, when removing the insert from the main mold for mold maintenance, etc., in general, after removing the hydraulic cylinder and slide core from the main mold, the entire mold (die base, main mold, insert) is inverted. Remove the die base tightening bolts, remove the die base from the main mold, remove the extrusion plate, extrusion guide pins, cooling parts and cast pins from the insert, and reverse the mold (main mold, insert) to insert Remove from the main mold.

  In this case, the procedure takes a lot of time and the maintenance efficiency of the mold is very poor, for example, it takes a long time (for example, about 12 hours) to remove and assemble the insert.

  Therefore, an object of the present invention is to provide a mold insert mounting structure that can greatly reduce the time required for removing and assembling the insert during mold maintenance in order to improve the maintenance efficiency of the mold. It is to provide.

  In order to achieve the above object, the present invention is a mold insert mounting structure in which a insert is fitted into a recess provided in a main mold, and is attached to a through hole provided in a side wall portion of the main mold. And a clamper for clamping the side wall of the insert from the lateral direction, and an insertion / removal means for inserting / removing the clamper.

  The insertion / extraction means may comprise a screw feed mechanism or a cylinder.

  The clamper includes a clamper sleeve fixed in a state where the clamper is inserted through the through hole of the main mold, a clamper driver inserted through the clamper sleeve so as to be movable in an axial direction, and an end of the clamper driver on the nesting side A clamper head connected to the portion, and a clamper receiver that is attached to a recess provided in the side wall portion of the insert and into which the clamper head is inserted.

  The clamper driver and the clamper head are connected to each other by a U groove formed in the clamper head and an engaging portion formed at an end of the inserter side of the clamper driver and engaged with the U groove. You can go.

  The contact portion of the clamper head and the clamper receiver may be formed in a tapered shape.

  A portion other than the contact portion of the clamper head and the clamper receiver may be provided with a gap when the clamper head is inserted into the clamper receiver.

  An extraction position notifying bar may be provided on the side wall portion of the main mold for notifying the extraction position where the clamper head is detached from the clamper receiver when the clamper is extracted.

  According to the present invention, there is provided a mold insert mounting structure capable of significantly reducing the time required for removing and assembling inserts during mold maintenance in order to improve mold maintenance efficiency. There is an excellent effect of being able to.

It is the schematic of the nesting attachment structure of the metal mold | die which concerns on one Embodiment of this invention, (a) shows the state which attached the nesting to the main type | mold, (b) removed the nesting from the main type | mold. Indicates the state. FIG. 2 is an enlarged view of a main part of FIG. 1, where (a) shows a state after inserting a clamper, and (b) shows a state before inserting the clamper. (A) is a front view of a clamper head, (b) is a side view of a clamper head. (A) is a front view of a clamper receptacle, (b) is a side view of a clamper receptacle. It is a principal part enlarged view of the insert mounting structure of the metal mold | die which concerns on other embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIG. 1, a mold 11 to which the insert mounting structure 10 according to the present embodiment is applied includes a die base 12, a main mold 13 fixed to the die base 12 and having a recess 13 a, and a recess of the main mold 13. It is mainly comprised from the insert 14 fitted by 13a. The mold 11 is a die casting mold used in a die casting machine. The mold 11 may be a fixed mold or a movable mold.

  As shown in FIG. 1, the insert mounting structure 10 according to this embodiment is attached to a through hole 13 c provided in the side wall portion 13 b of the main mold 13 and clamps the side wall portion 14 a of the insert 14 from the lateral direction. 15 and an insertion / extraction means 16 (see FIG. 2) for inserting / removing the clamper 15. That is, in the present embodiment, the main mold 13 and the insert 14 are fixed using a structure in which the clamper 15 is inserted from the through hole 13c provided in the side wall portion 13b of the main mold 13. By adopting such a structure, it is not necessary to tighten the insert 14 from the back of the main mold 13, and the insert 14 can be easily removed and assembled during mold maintenance.

  As shown in FIG. 2, the clamper 15 of this embodiment includes a clamper sleeve 17 that is fixed in a state of being inserted through the through hole 13 c of the main mold 13, and a clamper that is inserted into the clamper sleeve 17 so as to be movable in the axial direction. A driver (rod) 18, a clamper head 19 connected to the end of the clamper driver 18 on the side of the insert 14, and a recess 14 b provided on the side wall portion 14 a of the insert 14 are mounted, and the clamper head 19 is inserted. And a clamper receiver 20.

  A clamper driver 18 having a male screw 18a cut to the outer periphery is assembled (screwed) to the clamper sleeve 17 having a female screw 17a cut by a tap or the like on the inner periphery, and the end of the clamper driver 18 on the nesting 14 side is assembled. Assemble the clamper head 19. The set (clamper sleeve 17, clamper driver 18, clamper head 19) is attached to the through hole 13 c provided in the side wall part 13 b of the main mold 13 using bolts 21, and the clamper receiver 20 is attached to the side wall part 14 a of the insert 14. It attaches to the provided recessed part 14b using a volt | bolt (not shown). Then, the insert 14 with the clamper receiver 20 attached is fitted into the recess 13a of the main mold 13, and the clamper driver 18 (male screw 18a) is fastened to the clamper sleeve 17 (female screw 17a). The side wall portion 14a of the insert 14 is clamped from the lateral direction by the clamper 15 (see FIGS. 1 and 2A).

  In the present embodiment, the clamper driver 18 and the clamper head 19 are connected to each other between the U groove (first U groove 19a and second U groove 19b) (see FIG. 3) formed in the clamper head 19, and the clamper driver 18. An engagement portion (small-diameter portion 18b, large-diameter portion 18c) (see FIG. 2A) that is formed at the end portion on the side of the insert 14 and engages with the U-groove is performed. The width W1 (see FIG. 3 (a)) of the first U groove 19a of the clamper head 19 and the diameter R1 (see FIG. 2 (a)) of the small diameter portion 18b of the clamper driver 18 are set to be substantially equal. The width W2 (see FIG. 3A) of the 19 second U groove 19b and the diameter R2 (see FIG. 2A) of the large diameter portion 18c of the clamper driver 18 are set to be approximately equal. The width W1 of the first U groove 19a of the clamper head 19 is set smaller than the diameter R2 of the large diameter portion 18c of the clamper driver 18.

  Further, in the present embodiment, a tapered taper is provided at the tip of the clamper head 19 and the clamper receiver 20 to improve the insertability and to press the insert 14 against the main mold 13. That is, the contact portions 19c and 20a (hereinafter referred to as taper contact portions 19c and 20a) of the clamper head 19 and the clamper receiver 20 are formed in a tapered shape (see FIGS. 3 and 4). Furthermore, in this embodiment, portions other than the tapered contact portion 19c of the clamper head 19, the non-tapered contact portion 19e of the clamper head 19, the tapered contact portion 20a of the clamper receiver 20, and the non-tapered contact portion 20c of the clamper receiver 20 ( The non-contact portions 19d and 20b are provided with a gap when the clamper head 19 is inserted into the clamper receiver 20. That is, the height H1 (see FIG. 3B) and the width W3 (see FIG. 3A) of the non-contact portion 19d in the clamper head 19 are respectively the height H2 (see FIG. 3) of the non-contact portion 20b of the clamper receiver 20. 4 (b)) and width W4 (see FIG. 4 (a)).

  As shown in FIG. 2, the insertion / extraction means 16 of this embodiment includes a screw feeding mechanism 22. The screw feeding mechanism 22 includes a female screw 17a formed on the inner periphery of the clamper sleeve 17 and a male screw 18a formed on the outer periphery of the clamper driver 18 and screwed into the female screw 17a. The screw feed mechanism 22 inserts the clamper 15 by tightening the male screw 18a (clamper driver 18) to the female screw 17a (clamper sleeve 17), and rotates the male screw 18a (clamper driver 18) in the direction opposite to the tightening direction. Thus, the clamper 15 is pulled out.

  Further, in the present embodiment, the removal position notification bar 23 for notifying the removal position where the clamper head 19 is detached from the clamper receiver 20 is provided so that it can be seen that the clamper head 19 is detached from the clamper receiver 20 when the clamper 15 is removed. It is provided on the side wall 13 b of the main mold 13.

  In the insert mounting structure 10 according to this embodiment, when the insert 14 is removed from the main mold 13 for maintenance of the mold 11 or the like, the clamper driver 18 is rotated in the direction opposite to the tightening direction, and the clamper head 19 is moved to the clamper. It is removed from the receptacle 20 and the clamp of the insert 14 by the clamper 15 is released (see FIG. 2B). At that time, the clamper driver 18 is rotated in the direction opposite to the tightening direction until the tip of the clamper driver 18 coincides with the tip of the extraction position notification rod 23 (see the broken line A in FIG. 2B). In this embodiment, since the insert 14 is not tightened from the back of the main mold 13, the insert 14 can be removed from the main mold 13 by releasing the clamp of the insert 14 by the clamper 15 (FIG. 1). (See (b)).

  In short, according to the present embodiment, the clamper 15 which is attached to the through hole 13c provided in the side wall portion 13b of the main mold 13 and clamps the side wall portion 14a of the insert 14 from the lateral direction, and the insertion / removal means for inserting / removing the clamper 15 16, the insert mounting structure 10 is configured, so that the insert 14 can be removed from the main mold 13 without reversing the mold 11 and the main base 14 can be removed without removing the die base 12. The structure in which the insert 14 can be removed from the mold 13 can greatly reduce the time required for removing and assembling the insert 14 during mold maintenance (for example, about 12 to 5 hours). Can do.

  In addition, the time required for removing and assembling the insert 14 during mold maintenance is shortened. As a result, the maintenance time of the mold 11 is shortened, so that the number of maintenance of the mold 11 can be increased and the life of the mold can be extended. Preventive maintenance and improve product quality. Further, the work of reversing the mold 11 together with the main mold 13 is also eliminated, and the burden on the operator and safety can be ensured. Further, the insert 14 can be easily exchanged, and the possibility of using the insert in combination with the spare insert or for other parts is widened.

  Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various other embodiments can be adopted.

  For example, in the above-described embodiment, the insertion / removal means 16 is composed of the screw feed mechanism 22, but this is not a limitation. As shown in FIG. 5, the insertion / removal means 16 is composed of a cylinder 24 (hydraulic cylinder or air cylinder). Also good. In this case, the female screw 17a is not cut by the tap or the like on the inner periphery of the clamper sleeve 17, and the male screw 18a is not cut on the outer periphery of the clamper driver 18.

10 Nesting mounting structure 11 Mold (die casting mold)
13 Main mold 13a Recess 13b Side wall 13c Through hole 14 Insert 14a Side wall 14b Recess 15 Clamper 16 Insertion / removal means 17 Clamper sleeve 18 Clamper drivers 18a, 18b Engagement part (small diameter part, large diameter part)
19 Clamper head 19a, 19b U groove (first U groove, second U groove)
19c Taper contact part 19d Parts other than the contact part (non-contact part)
19e Contact portion 20 without taper Clamper receiver 20a Tapered contact portion 20b Parts other than the contact part (non-contact part)
20c Contact portion 22 without taper Screw feed mechanism 23 Extraction position notification rod 24 Cylinder (hydraulic cylinder, air cylinder)

Claims (7)

  In a mold insert mounting structure in which a insert is fitted and attached to a recess provided in the main mold, the insert is mounted in a through hole provided in the side wall of the main mold, and the side wall of the insert is clamped from the lateral direction. A mold nesting mounting structure comprising a clamper for clamping and a means for inserting and removing the clamper.   2. The mold insert mounting structure according to claim 1, wherein the inserting / removing means comprises a screw feed mechanism or a cylinder.   The clamper includes a clamper sleeve fixed in a state where the clamper is inserted through the through hole of the main mold, a clamper driver inserted through the clamper sleeve so as to be movable in an axial direction, and an end of the clamper driver on the nesting side The mold insert according to claim 1 or 2, comprising: a clamper head connected to a portion; and a clamper receiver mounted in a recess provided in a side wall portion of the insert and into which the clamper head is inserted. Mounting structure.   The clamper driver and the clamper head are connected to each other by a U groove formed in the clamper head and an engaging portion formed at an end of the inserter side of the clamper driver and engaged with the U groove. The insert mounting structure for a mold according to claim 3 to be performed.   5. The mold insert mounting structure according to claim 3, wherein the contact portions of the clamper head and the clamper receiver are formed in a tapered shape.   6. The mold insert mounting structure according to claim 5, wherein a gap is provided in a portion other than the contact portion between the clamper head and the clamper receiver when the clamper head is inserted into the clamper receiver.   The mold according to any one of claims 3 to 6, further comprising a removal position notification bar provided on a side wall portion of the main mold for notifying a removal position where the clamper head is detached from the clamper receiver when the clamper is removed. Nested mounting structure.

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