JP2014180678A - Mold structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly structure, in a metal mold structured by splitting into a first split mold and a second split mold, a clamp device for performing unification by pressing the second split mold to the first split mold side, and surely unify the first split mold and the second split mold.SOLUTION: A mold structure having a first split mold 21 and a second split mold 22 includes a clamp device 40 which moves the second split mold 22 to a support plate 25 by pressing to a first split mold 21 side. The clamp device 40 includes: a first nut fastened to an opposite second split mold side of a support part, corresponding to a bolt insertion hole formed in the support part extending from the support plate 25; a pressing bolt engaged with the first nut and pressing a side surface part of an opposite first split mold side of the second split mold; and a second nut engaged with the pressing bolt on an opposite support part side of the first nut.

Description

  The present invention relates to a mold structure, and more particularly to a mold structure including a mold making mold for making a mold.

  The mold making mold used for making a casting mold such as a sand core has a pair of upper and lower molds, and the upper mold and the lower mold are respectively attached to the support plate. In this state, it is incorporated into a mold making apparatus, the upper mold and the lower mold are combined, and the mold is molded by filling the cavity with casting sand at a predetermined pressure.

  In the mold configured as described above, when the mold size is large, the mold is configured by dividing at least one of the upper mold and the lower mold into the first divided mold and the second divided mold in the horizontal direction. It is known to improve the workability by reducing the size. In particular, in the mold making mold, since casting sand is used, the frequency of mold maintenance is relatively high, and it is useful to divide the mold in order to improve workability.

  For example, Patent Document 1 includes an upper mold and a lower mold, each of which has a fixed split mold and a movable split mold in which the upper mold and the lower mold are each divided in the horizontal direction. There is disclosed a mold making mold that is pressed and integrated to a fixed split mold side.

JP 2012-250246 A

  Like the mold described in Patent Document 1, the upper mold and the lower mold are each divided into a fixed split mold and a movable split mold, thereby reducing the size of one mold and improving workability. However, depending on the pressing force that presses the movable split mold against the fixed split mold, a gap may be generated between the first split mold and the second split mold when the cavity is filled with foundry sand. .

  FIG. 10 is an explanatory diagram for explaining a conventional mold structure. A mold 100 shown in FIG. 10 is configured by being divided into a fixed split mold 101 and a movable split mold 102, and the fixed split mold 101 is attached to the support plate 110 while being restricted from moving in the horizontal direction. Is attached to the support plate 110 so as to be movable in the X direction in the horizontal direction. The mold 100 is also configured such that the movable split mold 102 is pressed toward the fixed split mold 101 by the clamp device 120 so that the fixed split mold 101 and the movable split mold 102 are integrated.

  The clamp device 120 has two cylinders 122 each having a rod 121 movable in the Y direction, and a triangular clamp member 123 is fixed to the tip of each rod 121 in plan view. The two cylinders 122 are disposed so as to face each other in the Y direction, and a pressing member 124 is interposed between the two clamp members 123 so as to be movable in the X direction.

  In the clamp device 120, the two cylinders 122 are operated to move the rods 121, whereby the pressing member 124 is moved toward the movable split mold 102 by the clamp member 123, thereby moving the movable split mold 102 to the fixed split mold. The fixed split mold 101 and the movable split mold 102 are integrated by pressing toward the 101 side.

  After the fixed split mold 101 and the movable split mold 102 are integrated by the clamp device 120, the side portions 101a and 102a in the Y direction of the fixed split mold 101 and the movable split mold 102 are clamped by the clamp device 130, respectively. The mold 101 and the movable split mold 102 are fixed to the support plate 110.

  In the mold structure configured as described above, the clamping device 120 converts the pressing force in the Y direction by the cylinder 122 into the X direction and presses the movable split mold 102 toward the fixed split mold 101. As described above, there is a possibility that the movable split mold 102 moves in the Y direction during molding and a gap is generated between the fixed split mold 101 and the movable split mold 102.

  On the other hand, by enlarging the cylinder 122 and increasing the pressing force for pressing the movable split mold 102 toward the fixed split mold 101, a gap is generated between the fixed split mold 101 and the movable split mold 102 during molding. Although it is possible to suppress this, if the cylinder 122 is enlarged, the size of the entire mold including the clamping device 120 will be increased.

  In addition, it is conceivable that the cylinder 122 is arranged so as to move the rod 121 in the X direction and the pressing force for pressing the movable split mold 102 toward the fixed split mold 101 is increased. The size of the whole mold including 120 will be increased.

  Therefore, the present invention provides a compact clamping device for pressing and integrating the second divided mold toward the first divided mold in the mold structure configured by dividing the first divided mold and the second divided mold. It is an object of the present invention to provide a mold structure that can be integrated with the first split mold and the second split mold.

  In order to solve the above problems, the present invention is configured as follows.

  First, the invention according to claim 1 of the present application includes a pair of molds including an upper mold and a lower mold, and a support plate to which the upper mold and the lower mold are respectively attached, and the upper mold and the lower mold. At least one of them is a mold structure having a first divided mold that is divided from each other and attached to the support plate with movement restricted, and a second divided mold that is movably attached to the support plate, The plate is provided with a clamp device that presses the second split mold toward the first split mold and integrates the first split mold and the second split mold, and the clamp apparatus includes the support plate Extending from the second split-type anti-first split-type side surface portion, and a support portion in which a bolt insertion hole is formed, and the support portion corresponding to the bolt insertion hole formed in the support portion The first fixed to the side opposite to the second split mold , A pressing bolt that presses the side portion of the second split mold on the side opposite to the first split mold through the bolt insertion hole by being screwed to the first nut, and the first nut on the press bolt A second nut screwed on the side opposite to the support portion, and by screwing the pressing bolt into the first nut, the second split mold is moved to the first split side through the bolt insertion hole. The first split mold and the second split mold are integrated by tightening the second nut against the first nut after pressing.

  The invention according to claim 2 of the present application is characterized in that, in the invention according to claim 1, the first nut and the second nut are constituted by hard lock nuts.

  Furthermore, the invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the clamp device is configured to correspond to the two bolt insertion holes formed in the support part. Two first nuts fixed to the side opposite to the second split mold, and the side part of the second split mold on the side opposite to the first split mold through the bolt insertion hole by being screwed to the first nut Two pressure bolts, and two second nuts that are screwed to the two pressure bolts on the side opposite to the first nut, and using the two pressure bolts, the second split type The side part is pressed.

  Still further, the invention according to claim 4 of the present application is characterized in that, in the invention according to any one of claims 1 to 3, the mold is a mold making mold.

  With the above configuration, according to the invention of each claim of the present application, the following effects can be obtained.

  First, according to the invention according to claim 1 of the present application, the clamp device includes a support portion in which a bolt insertion hole is formed, a first nut fixed to the second split mold side of the support portion, and a first nut. A pressing bolt that presses the side surface of the second split mold on the side opposite to the first split mold through the bolt insertion hole, and a second nut that is screwed to the pressing bolt on the side opposite to the support portion of the first nut The first nut is tightened with respect to the first nut after the second split mold is pressed to the first split side through the bolt insertion hole by screwing the pressing bolt with the first nut. The split type and the second split type are integrated.

  Accordingly, in the mold that is divided into the first split mold and the second split mold, the clamp device that presses and integrates the second split mold toward the first split mold is configured to be relatively compact. In addition, the first split mold and the second split mold can be reliably integrated by suppressing the formation of a gap between the first split mold and the second split mold during molding.

  Moreover, according to the invention which concerns on Claim 2 of this application, the said effect can be effectively implement | achieved because the 1st nut and the 2nd nut are comprised by the hard lock nut.

  Furthermore, according to the invention which concerns on Claim 3 of this application, a clamp apparatus presses the side part of a 2nd division type by two points | pieces by pressing the side part of a 2nd division type using two press bolts. The second split mold can be moved in parallel with the first split mold when the second split mold is pressed toward the first split mold, and the first split mold and the second split mold can be moved. Can be integrated with high precision.

  Still further, according to the invention according to claim 4 of the present application, since the mold is a mold-molding mold, the above-mentioned effect can be obtained in mold-molding in which the frequency of mold maintenance and mold replacement can be relatively increased. Can be effectively obtained. When forming a mold using a mold making mold, it is possible to effectively prevent a gap from being generated between the first divided mold and the second divided mold.

1 is a side view schematically showing a mold structure according to an embodiment of the present invention. It is a figure which shows the metal mold | die structure seen from the A direction in FIG. It is a figure which shows the metal mold | die structure seen from the B direction in FIG. It is a figure which shows the state which removed the lower mold | type from the metal mold | die structure shown in FIG. FIG. 3 is a cross-sectional view taken along line Y5-Y5 in FIG. It is a perspective view of the metal mold | die structure which expands and shows the C section in FIG. It is sectional drawing along the Y7-Y7 line | wire in FIG. It is explanatory drawing for demonstrating the assembly | attachment of the metal mold | die which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the modification of the metal mold | die structure which concerns on embodiment of this invention. It is explanatory drawing for demonstrating the conventional metal mold | die structure.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view schematically showing a mold structure according to an embodiment of the present invention. FIG. 2 is a view showing a mold structure viewed from the direction A in FIG. FIG. 3 is a view showing a mold structure viewed from the direction B in FIG.

  A mold structure according to an embodiment of the present invention is applied to a mold making mold used in a mold making apparatus for making a mold such as a sand core for casting, and is shown in FIGS. 1 to 3. As described above, the mold making die 1 includes an upper die 10 and a lower die 20 which are formed in a rectangular shape in plan view.

  The mold making mold 1 includes an upper mold 10 and a lower mold 20 that are attached to the support plates 15 and 25, respectively, and the upper mold 10 and the lower mold 20 that are attached to the support plates 15 and 25. (Not shown). In the mold making die 1, the upper die 10 and the lower die 20 are brought together by moving the support plate 15 in the direction of arrow Z in FIG. The mold is made by filling with.

  The upper mold 10 includes a first divided mold 11 and a second divided mold 12 that are divided in the X direction in the horizontal direction. As shown in FIG. 3, each of the first divided mold 11 and the second divided mold 12 is formed in a quadrangular shape in plan view, and cavities 11a and 12a for forming a mold are formed in a concave shape from the upper surface. Yes.

  Similarly for the lower mold 20, the lower mold 20 includes a first divided mold 21 and a second divided mold 22 that are divided in the X direction in the horizontal direction, and the first divided mold 21 and the second divided mold 22. As shown in FIG. 2, each is formed in a quadrangular shape in plan view, and cavities 21a and 22a for forming a mold are recessed from the upper surface.

  In the mold making mold 1, when the upper mold 10 and the lower mold 20 are combined in the mold making apparatus, the first divided mold 11 of the upper mold 10 and the first divided mold 21 of the lower mold 20 are combined. The second divided mold 12 of the upper mold 10 and the second divided mold 22 of the lower mold 20 are combined.

  When the upper mold 10 and the lower mold 20 are combined, two cavities are formed by the cavities 11 a and 21 a formed by the first divided molds 11 and 21 and the cavities 12 a and 22 a formed by the second divided molds 12 and 22. ing. Note that when the upper mold 10 and the lower mold 20 are combined, one cavity or three or more cavities may be formed.

  In order to match the upper mold 10 and the lower mold 20, the first divided mold 11 of the upper mold 10 is formed with two positioning holes 11 c that are recessed from the upper surface, and the two positioning holes 11 c are As shown in FIG. 3, they are provided in the diagonal direction. Similarly, in the second split mold 12 of the upper mold 10, two positioning holes 12c are formed so as to be recessed from the upper surface, and the two positioning holes 12c are provided in a diagonal direction as shown in FIG. Yes.

  On the other hand, the first split mold 21 of the lower mold 20 is formed with two positioning protrusions 21 c protruding from the upper surface, and the two positioning protrusions 21 c are for positioning the first split mold 11 of the upper mold 10. Corresponding to the hole 11c, it is provided in the diagonal direction as shown in FIG. Similarly, in the second split mold 22 of the lower mold 20, two positioning protrusions 22 c are formed so as to protrude from the upper surface, and the two positioning protrusions 22 c are used for positioning the second split mold 12 of the upper mold 10. Corresponding to the protrusion 12c, it is provided in a diagonal direction as shown in FIG.

  The first split mold 11 and the second split mold 12 of the upper mold 10 are respectively the positioning hole 11c of the first split mold 11 and the positioning hole 12c of the second split mold 21 of the lower mold 20. By being fitted to the positioning projection 21 c of the split mold 21 and the positioning projection 22 c of the second split mold 22, the positioning is performed with respect to the first split mold 21 and the second split mold 22 of the lower mold 20. .

  4 is a view showing a state where the lower mold is removed from the mold structure shown in FIG. As shown in FIG. 4, a lower mold mounting portion 25a to which the lower mold 20 is mounted is formed in the support plate 25 so as to be recessed in a substantially square shape from the upper surface. A plurality of through-holes 25b are formed for insertion of a member (shown).

  Positioning keys 26, 27, 28, and 29 are also provided on the bottom surface of the lower mold attachment portion 25a. The positioning keys 26, 27, 28, and 29 are each formed in a rectangular shape and are formed so as to protrude from the bottom surface of the lower mold attachment portion 25a. The first, second, and third positioning keys 26, 27, and 28 are for positioning the first split mold 21, and the fourth positioning key 29 is for positioning the second split mold 21. is there. The first split mold 21 and the second split mold 22 have positioning groove portions (not shown) corresponding to the positioning keys 26, 27, 28, and 29.

  The first split mold 21 is positioned in the X direction by the first and second positioning keys 26 and 27 in the horizontal direction with respect to the support plate 25, and is positioned in the Y direction by the third positioning key 28. Horizontal movement is restricted and attached.

  On the other hand, the second split mold 22 is positioned only in the Y direction by the fourth positioning key 29 in the horizontal direction with respect to the support plate 25 and attached to the support plate 25 so as to be movable in the X direction in the horizontal direction. The X-direction positioning of the second split mold 22 with respect to the support plate 25 is performed by pressing the second split mold 22 toward the first split mold 21 with a second clamp device 40 to be described later and the first split mold 21 and the second split mold. This is performed by integrating the mold 22 with the mold 22.

  As shown in FIGS. 1 and 3, the support plate 25 includes a plurality of, specifically four, first clamp devices for attaching the first split mold 21 and the second split mold 22 to the support plate 25, respectively. 30 is disposed. Each of the four first clamping devices 30 is configured to clamp the side portions of the first split mold 21 and the second split mold 22 in the Y direction.

  Since the four first clamp devices 30 are configured in the same manner, the first clamp that clamps the side surface portion on the one end side in the Y direction of the first split mold 21 (the lower side in the Y direction of the first split mold 21 in FIG. 2). Only the device 30 will be described.

  The first clamping device 30 is fixed to a cylinder 31 having a rod 32 movable in the Y direction in the horizontal direction, a connecting member 33 extending in the X direction connected to the rod 32, and both ends of the connecting member 33. The clamp member 34 extends in the Y direction, and the clamp member 34 is moved in the Y direction when the rod 32 is moved in the Y direction in the horizontal direction.

  FIG. 5 is a sectional view taken along line Y5-Y5 in FIG. As shown in FIG. 5, the clamp member 34 includes an inclined surface portion 34 a that is inclined upward toward the first split mold 21 on the lower surface of the tip portion. On the other hand, an inclined surface portion 21 b corresponding to the inclined surface portion 34 a of the clamp member 34 is formed on the side surface portion of the first split mold 21 facing the clamp member 34.

  When the rod 32 is moved to the first split mold 21 side in the Y direction in the horizontal direction, the clamp member 34 is moved to the first split mold 21 side in the Y direction, and the inclined surface portion 34a of the clamp member 34 and the first The first split mold 21 is pressed downward by contacting the inclined surface portion 21 b of the split mold 21, and the first split mold 21 is attached to the support plate 25.

  After the first split mold 21 and the second split mold 22 are positioned at predetermined positions of the support plate 25, the four first clamp devices 30 cause the first split mold 21 and the second split mold 22 to have side surfaces in the Y direction. Are clamped, and the first split mold 21 and the second split mold 22 are fixedly attached to the support plate 25.

  Here, in order to position the second split mold 22 at a predetermined position of the support plate 25, the second split mold 22 is pressed toward the first split mold 21 so that the first split mold 21 and the second split mold 22 are moved. The 2nd clamp apparatus 40 made to integrate is demonstrated with reference to FIG.6 and FIG.7.

  6 is a perspective view of the mold structure showing the C portion in FIG. 2 in an enlarged manner, and FIG. 7 is a sectional view taken along line Y7-Y7 in FIG. As shown in FIGS. 6 and 7, the second clamping device 40 is provided on the second split mold 22 on the side opposite to the first split mold 21 and presses the second split mold 22 toward the first split mold 21. It is configured as follows.

  The second clamping device 40 is fixed to the support portion 41b extending from the support plate 25 so as to face the side surface portion 22d on the side opposite to the first split mold of the second split mold 22, and to the second split mold side of the support 41b. The first nut 43, the pressing bolt 42 that presses against the side portion 22d of the second split mold 22 on the side opposite to the first split mold through the bolt insertion hole 41c by being screwed to the first nut 43, and the press bolt 42 And a second nut 44 that is screwed on the side opposite to the support portion 41 of the first nut 43 (between the head 42a of the pressing bolt 42 and the first nut 43).

  The support portion 41b has a substantially L-shaped support member 41 having a substantially flat mounting portion 41a extending in a substantially horizontal direction and a substantially flat support portion 41b extending in a substantially vertical direction fixed to the support plate 25. By being attached, it is provided to extend from the support plate 25.

  The first nut 43 is provided corresponding to a bolt insertion hole 41c formed in the support portion 41b and extending in the X direction in the horizontal direction, and the mounting seat surface 41d of the support portion 41b to which the first nut 43 is attached It is formed to be recessed from the end surface on the side opposite to the second split mold 41b.

  The pressing bolt 42 includes a head portion 42a having a hexagonal hole portion and a shaft portion 42b having a screw portion, and a pressing member 45 formed in a columnar shape is attached to a tip portion of the shaft portion 42b. The pressing bolt 42 is also provided so as to be positioned in the support plate 25 when the side surface portion 22d of the second split mold 22 is pressed.

  The first nut 43 and the second nut 44 are constituted by hard lock nuts, a convex portion 43a is formed on the second nut 44 side of the first nut 43, and a concave portion 44a on the first nut 43 side of the second nut 44. Is formed, and the convex portion 43a and the concave portion 44a are eccentrically fitted.

  As described above, the second clamping device 40 includes a support portion 41b that extends opposite to the side surface portion 22d of the second split mold 22 on the side opposite to the first split mold 21 and the anti-second split mold 22 side of the support portion 41b. The fixed first nut 43, the pressing bolt 42 screwed into the first nut 43 and pressing the side surface portion 22d of the second split mold 22, and the pressing bolt 42 on the side opposite to the support portion 41b of the first nut 43 And a second nut 44 to be screwed together.

  Then, with the first split mold 21 and the second split mold 22 attached to the support plate 25, the head 42a of the press bolt 42 is rotated by the operator and the press bolt 42 is screwed into the first nut 43. As a result, the second split mold 22 is pressed to the first split side 21 through the pressing member 45 through the bolt insertion hole 41c, and then the second nut 44 is fastened to the first nut 43 by the operator. Thus, the first split mold 21 and the second split mold 22 are integrated.

  After the first split mold 21 and the second split mold 22 are integrated, and the first split mold 21 and the second split mold 22 are positioned at predetermined positions of the support plate 25, the first clamp device 30 performs the first The split mold 21 and the second split mold 22 are fixedly attached to the support plate 25.

  In the present embodiment, the upper mold 10 is also divided into the first divided mold 11 and the second divided mold 12, but the first divided mold 11 and the second divided mold 12 of the upper mold 10 are Each is positioned with respect to the first divided mold 21 and the second divided mold 22 of the lower mold 20.

  The support plate 15 is also provided with a first clamping device 30 for attaching the first split mold 11 and the second split mold 12 to the support plate 15, respectively. The second split mold 12 is connected to the first split mold 11 side. Although the second clamping device 40 that presses toward the upper mold 10 is disposed, the first divided mold 11 that is positioned with respect to the first divided mold 21 and the second divided mold 22 of the lower mold 20 respectively. After the second split mold 12 is attached to the support plate 15 by the first clamp device 30, the second split mold 12 is pressed toward the first split mold 11 by the second clamp device 40, and the first split mold 12 is formed during molding. 11 and the second split mold 12 are prevented from moving.

Next, assembly of a mold to which the mold structure according to this embodiment is applied to a mold making apparatus will be described.
FIG. 8 is an explanatory diagram for explaining assembly of the mold according to the embodiment of the present invention. As shown in FIG. 8A, when the mold 1 is assembled to the mold making apparatus, the first split mold 21 and the second split mold 22 are placed on the support plate 25 while the support plate 15 is moved upward. Then, the first divided mold 11 and the second divided mold 12 of the upper mold 10 are respectively overlapped and positioned with respect to the first divided mold 21 and the second divided mold 22 of the lower mold 20. .

  In this state, the second split mold 22 and the second split mold 22 are integrated by pressing the second split mold 22 of the lower mold 20 toward the first split mold 21 using the second clamp device 40. Then, the first split mold 21 and the second split mold 22 are attached to the support plate 25 using the first clamp device 30.

  When the lower mold 20 is attached to the support plate 25, as shown in FIG. 8B, when the support plate 15 is moved downward and comes into contact with the upper mold 10, the upper mold 10 is moved upward using the first clamping device 30. The first split mold 11 and the second split mold 12 of the mold 10 are attached to the support plate 15, and then the second split mold 12 of the upper mold 10 is pressed toward the first split mold 10 using the second clamping device 40. To do. Thereby, the metal mold | die 1 is assembled | attached to a mold making apparatus. When the mold 1 is removed from the mold making apparatus for mold maintenance or mold replacement, a procedure reverse to the procedure for assembling the mold is performed.

  Thus, in this embodiment, the clamping device 40 includes the support portion 41b in which the bolt insertion hole 41c is formed, the first nut 43 fixed to the second split mold side of the support portion 41b, and the second split. A pressing bolt 42 that presses the side surface portion 22d on the side opposite to the first split mold of the die 22 and a second nut 44 that is screwed to the pressing bolt 42 on the side opposite to the supporting portion of the first nut 43 are provided. The first split is performed by tightening the second nut 44 against the first nut 43 after pressing the second split mold 22 toward the first split mold 21 through the bolt insertion hole 41 c by screwing with the first nut 43. The mold 21 and the second divided mold 22 are integrated.

  Thereby, in the mold 20 configured to be divided into the first split mold 21 and the second split mold 22, the clamp device 40 that presses and integrates the second split mold 22 toward the first split mold 21 side. The first split mold 21 and the second split mold 22 can be configured by suppressing the formation of a gap between the first split mold 21 and the second split mold 22 during molding. It can be reliably integrated.

  In addition, since the first nut 43 and the second nut 44 are constituted by hard lock nuts, it is possible to suppress a gap from being generated between the first split mold 21 and the second split mold 22 during molding. Since the 1st division type 21 and the 2nd division type 22 can be united certainly, the above-mentioned effect can be realized effectively.

  FIG. 9 is an explanatory diagram for explaining a modified example of the mold structure according to the embodiment of the present invention. Instead of the clamping device 40 shown in FIG. 6, as shown in FIG. 9, two pressing bolts 42 are inserted into the support portion 41 b fixed to the support plate 25, and the second split mold 22 is formed by the two pressing bolts 42. It is also possible to use a clamp device 60 that presses toward the first split mold side.

  The clamp device 60 shown in FIG. 9 includes two first nuts 43 fixed to the second split mold side of the support portion 41b in correspondence with two bolt insertion holes (not shown) formed in the support portion 41b. , By being screwed into the first nut 43, the two pressing bolts 42 pressing the side surface portion 22 d on the side opposite to the first split mold of the second split mold 22 through the bolt insertion hole and the two press bolts 42 are Two nuts 44 that are screwed on the opposite side of the one nut 43 are provided.

  In this way, the two pressing bolts 42 are inserted through the support portion 41b fixed to the support plate 25, and the side surface portion 22d of the second split mold 22 is pressed toward the first split mold side using the two press bolts 42. Even when the clamp device 60 is used, the clamp device 60 can be configured to be relatively compact, and the formation of a gap between the first split mold 21 and the second split mold 22 during molding can be suppressed. The first split mold 21 and the second split mold 22 can be reliably integrated.

  The clamping device 60 can press the side surface portion 22d of the second split mold 22 at two points by pressing the side surface portion 22d of the second split mold 22 using the two pressing bolts 42. When the two split mold 22 is pressed toward the first split mold 21, the second split mold 22 can be moved in parallel to the first split mold 21, and the first split mold 21 and the second split mold 22 can be moved. Can be integrated with high precision.

  In the present embodiment, with respect to the lower mold 20, the first split mold 21 is attached to the support plate 25 so as to be moved, the second split mold 22 is attached to the support plate 25 so as to be movable, and the clamp device 40 is used. The first split mold 21 and the second split mold 22 are integrated by pressing the second split mold 22 toward the first split mold 21, but the upper mold 10 is configured similarly to the lower mold 20. Is also possible.

  Further, in the present embodiment, the lower mold 20 is divided into a first divided mold 21 and a second divided mold 22, and the second divided mold 22 is pressed toward the first divided mold 21 using the clamping devices 40 and 60. The first split mold 21 and the second split mold 22 are integrated, but it is divided into three or more split molds, and a further split mold is provided between the first split mold 21 and the second split mold 22. By arranging and pressing the second split mold 22 toward the first split mold 21 using the clamping devices 40 and 60, it is possible to integrate these split molds.

  The present invention is not limited to the illustrated embodiments, and various improvements and design changes can be made without departing from the scope of the present invention.

  As described above, according to the present invention, the clamp device that presses and integrates the second split mold toward the first split mold is compactly configured, and the first split mold and the second split mold are reliably configured. Since they can be integrated, they may be suitably used in mold making using a mold that is divided into a first divided mold and a second divided mold.

1 Mold 10 Upper mold 11 Upper mold first divided mold 12 Upper mold second divided mold 15 Upper mold support plate 20 Lower mold 21 Lower mold first divided mold 22 Lower mold second divided mold 22d Second Side part 25 on the side opposite to the first split mold of the split mold Lower support plate 30 First clamp device 40, 60 Second clamp device 41b Support part 41c Bolt insertion hole 42 Press bolt 43 First nut 44 Second nut

Claims (4)

A pair of molds composed of an upper mold and a lower mold, and a support plate to which the upper mold and the lower mold are respectively attached; at least one of the upper mold and the lower mold is divided from each other; A mold structure having a first split mold that is mounted with its movement restricted and a second split mold that is movably mounted on the support plate,
The support plate is provided with a clamp device that presses the second split mold toward the first split mold and integrates the first split mold and the second split mold.
The clamping device is
A support portion extending from the support plate to a side surface portion on the side opposite to the first split mold of the second split mold and having a bolt insertion hole;
A first nut fixed to the second split mold side of the support portion corresponding to a bolt insertion hole formed in the support portion;
A pressing bolt that presses the side surface portion of the second split mold on the side opposite to the first split mold through the bolt insertion hole by being screwed to the first nut;
A second nut screwed onto the pressing bolt on the side opposite to the first nut,
The second nut is fastened to the first nut after the second split mold is pressed to the first split side through the bolt insertion hole by screwing the pressing bolt into the first nut. The first split mold and the second split mold are integrated by
A mold structure characterized by that. The first nut and the second nut are constituted by hard lock nuts,
The mold structure according to claim 1, wherein: The clamping device is
Two first nuts fixed to the second split mold side of the support portion corresponding to the two bolt insertion holes formed in the support portion;
Two pressing bolts that press the side part of the second split mold on the side opposite to the first split mold through the bolt insertion hole by being screwed to the first nut;
Two second nuts screwed onto the two pressing bolts on the side opposite to the first nut, and
Pressing the side part of the second split mold using the two pressing bolts;
The mold structure according to claim 1 or 2, characterized by the above. The mold is a mold making mold,
The mold structure according to any one of claims 1 to 3, wherein the mold structure is provided.

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