JP5935733B2 - Clamp device and clamp mechanism for fixed member - Google Patents

Description

  The present invention relates to a clamp device for a fixed member and a clamp mechanism.

  When casting a mold such as a sand core for casting, a pair of molds consisting of an upper mold and a lower mold are mounted on a support plate and incorporated into a mold molding apparatus, and the upper mold and the lower mold are combined to form a cavity. In general, a casting mold is formed by filling casting sand with a predetermined pressure.

  In the mold making apparatus, a clamp device is used to attach a mold as a fixed member to a support plate at a predetermined position, and this clamp apparatus supports the mold for performing mold maintenance, mold replacement, and the like. It is configured to be detachably attached to the plate.

  As a clamping device used in a mold making device, for example, in Patent Document 1, an engaging portion of a clamp member is provided on a model surface plate by rotating the clamping member in a clamping direction by a spring force of a spring member. The model surface plate is fastened to the carrier plate by engaging the clamp plate, and the clamping member is rotated against the spring force of the spring member in the unclamping direction by the pushing device, thereby abutting the engaging portion of the clamp member. There is disclosed a fixing device configured to be detached from a part and to remove a model surface plate from a carrier plate.

  In addition, by attaching a clamp member having an inclined surface portion that comes into contact with the inclined surface portion formed on the mold to the tip of the rod and moving the rod to the mold side, the inclined surface portion of the clamp member is moved to the inclined surface portion of the mold. There is also known a clamp device configured to attach a mold to a support plate in contact with the support plate.

  FIG. 13 is an explanatory diagram for explaining a conventional clamping device. A clamp device 100 shown in FIG. 13 includes a cylinder 102 attached to a support plate 101 and a clamp member 105 having an inclined surface portion 105a fixedly attached to a rod 103 of the cylinder 102. Is provided with an inclined surface portion 111c in the notch portion 111b of the side surface portion 111a.

  Then, by moving the rod 103 relative to the mold 111 in the direction of the arrow X in the direction of the mold 111, the inclined surface portion 105 a of the clamp member 105 comes into contact with the inclined surface portion 111 c of the mold 111 and the mold 111 is moved. Clamp to support plate 101. Further, by moving the rod 103 in the direction of the arrow X in the direction of the arrow X with respect to the mold 111, the inclined surface portion 105 a of the clamp member 105 is separated from the inclined surface portion 111 c of the mold 111 to support the mold 111. Unclamp from plate 101.

  In the clamping device 100 configured as described above, the inclined surface portion 105a of the clamp member 105 is brought into contact with the inclined surface portion 111c of the mold 111, and the mold 111 is clamped to the support plate 101. There is a possibility that the clamping member 105 moves upward and the mold 111 moves when molding is filled.

  FIG. 14 is an explanatory diagram for explaining another conventional clamping device. A clamping device 120 shown in FIG. 14 is obtained by attaching a regulating member 121 that regulates the upward movement of the clamping member 105 to the support plate 101 of the clamping device 100 shown in FIG. According to the clamp device 120, it is possible to suppress the clamp member 105 from moving upward and the mold 111 from being moved by the restricting member 121 during molding.

JP 2009-195934 A

  However, in the clamping device 120 shown in FIG. 14, the inclined surface portion 105 a of the clamping member 105 is brought into contact with the inclined surface portion 111 c of the mold 111 to clamp the mold 111 on the support plate 101 and the mold 111 moves during molding. Although this can be suppressed, for example, when casting sand enters between the upper surface 105b of the clamp member 105 and the opposing surface 121a of the restricting member 121, the clamp member 105 stops moving, and the mold 111 is moved to the support plate. There is a possibility that unclamping from 101 may not be possible. Therefore, a clamping device and a clamping mechanism that can reliably clamp and unclamp a mold as a fixed member installed in an atmosphere in which sand, dust or the like is scattered are required.

  The present invention has been made in view of the above technical problem, and can securely clamp the fixed member to the support plate and suppress the movement of the fixed member. It is an object of the present invention to provide a clamp device and a clamp mechanism for a fixed member that can reliably unclamp the support plate from a support plate.

  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 is a clamp device for a fixed member that attaches a fixed member to a support plate, and includes a rod that is movable in a horizontal direction with respect to the fixed member, and the support member a cylinder attached to the inclined surface which is inclined upwardly as the toward the fixation member side which contacts inclined surface portion and the surface inclined downward toward the rod side provided on the rod side of the fixed member And an upper protruding portion having a vertical wall surface portion provided below the inclined surface portion of the upper protruding portion in surface contact with a vertical wall surface portion provided below the inclined surface portion of the fixed member. A clamp member having a substantially U-shaped cross section connected to the rod, and fixed to a tip portion of the rod and holding the clamp member in a loose-fitting state, the rod and the clamp member being A connecting member for binding, provided with a portion extending above the attached Rutotomoni said clamp member to said support plate, said clamp by the lower surface of the portion extending above the clamp member engages the upper surface of said clamping member comprising a regulating member which rule the upward movement of the member regulations, the said rod, when pressing the clamping member to the sheath fixing member side the move to the fixed member side by the tip of the rod, The tip of the rod presses the upper protrusion side on the anti-fixed member side of the clamp member, and the clamp member is pressed to the fixed member side by the tip of the rod. vertical wall surface portion of the clamp member moves GaTadashi braking state to above the clamping member contacts the longitudinal wall portion and the surface of the member to be fixed by the member Both the contact inclined surface portion and the surface of the slope portion is the member to be fixed in the clamp member, and wherein the attaching the member to be fixed to the support plate.

  The invention according to claim 2 of the present application is characterized in that, in the invention according to claim 1, the fixed member is a lower mold of a mold making die.

Furthermore, in the invention according to claim 3 of the present application, in the invention according to claim 1 or 2, the clamp member is a longitudinal member disposed on the fixed member side of the connecting member that holds the clamp member. A foreign matter intrusion prevention member that includes a surface portion and covers a portion where the clamp member is held by the connecting member from the fixed member side is provided.

Furthermore, the invention according to claim 4 of the present application is a clamp mechanism for a fixed member for attaching a fixed member to a support plate, and supports a cylinder having a rod that can move in a horizontal direction with respect to the fixed member. An upper protrusion that has an inclined surface portion that is attached to a member and has an inclined surface portion that is inclined upward toward the fixed member side that is in surface contact with the inclined surface portion that is inclined downward as the rod side is provided on the rod side of the fixed member. And a lower protruding portion having a vertical wall surface portion provided below the inclined surface portion of the upper protruding portion in surface contact with the vertical wall surface portion provided below the inclined surface portion of the fixed member. A U-shaped clamp member is coupled to the rod, and a coupling member that couples the rod and the clamp member is fixed to the tip of the rod, and the coupling member is To hold up member loosely, upward of the clamp member by the lower surface of the portion extending above the clamp member includes a portion extending above the clamp member engages the upper surface of said clamping member attaching a regulating member rule the movement of regulations to the support plate, said rod, when said pressing the clamping member to the member to be fixed side by the tip of the rod to move to the fixed member side, the rod The front end of the clamp member presses the upper protruding portion side on the side of the clamp member opposite to the fixed member, and the clamp member is pressed toward the fixed member side by the front end portion of the rod. before together is longitudinal wall portion and the surface contact of the member to be fixed to the vertical wall portion of the clamp member moves GaTadashi braking state to above the clamping member Wherein the inclined surface portion of the clamping member in contact inclined surface portion and the surface of the fixed member, characterized in that constitutes the member to be fixed to mount to the support plate.

  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, a clamp member having a substantially U-shaped cross section, which is provided with an upper protruding portion having an inclined surface portion and a lower protruding portion having a vertical wall surface portion, and is coupled to the rod, a connecting member for holding in a loosely fitted state the clamping member is fixed to, and a regulating member which rule the upward movement of the clamp member regulations, the clamp member may be pressed against the fixation member side by a rod Accordingly, the inclined surface portion with vertical wall portion in a state of being moved GaTadashi braking upward clamping member by the restricting member contacts the longitudinal wall portion and the surface of the fixing member is in contact inclined surface portion and the surface of the fixed member, The fixed member is attached to the support plate. The fixed member refers to a member that is fixedly attached to a support plate by a clamp member.

  As a result, the fixed member can be reliably clamped to the support plate by the clamp member, and the fixed member can be prevented from moving by the restricting member. Further, since the clamp member is held in the loosely fitted state by the connecting member, it is possible to prevent the clamp member from moving with respect to the restricting member when unclamping, and the member to be fixed is reliably unfastened from the support plate. Can be clamped. The support member that supports the cylinder may be the support plate, or may be a separate support member installed in an opening provided in the support plate.

  Further, according to the invention according to claim 2 of the present application, since the fixed member is a lower mold of the mold making mold, in mold making that the frequency of mold maintenance and mold replacement can be relatively increased. The effect can be obtained effectively. In particular, the lower mold of the mold making mold is easy to accumulate casting sand, and there is a possibility that the casting sand may enter between the clamp member and the mold or between the clamp member and the regulating member. It can be obtained effectively.

Further, according to the invention according to claim 3 of the present application, the clamp member includes a vertical surface portion arranged on the fixed member side of the connecting member, and the portion where the clamp member is held by the connecting member is viewed from the fixed member side. due to the provision of the foreign object penetration preventing member covering, it is possible to obtain the pre-Symbol effect more effective.

Furthermore, according to the invention according to claim 4 of the present application, a clamp member having a substantially U-shaped cross section provided with an upper protruding portion having an inclined surface portion and a lower protruding portion having a vertical wall surface portion is connected to the rod. member was hold the clamping member to the connecting member causes fixed to rod loosely fitted, the regulating member rule the upward movement of the clamping member Tadashi attached to the support plate, the clamping member is in the fixed member side by a rod by being pressed, the inclined surface causes the vertical wall portion while being moved GaTadashi braking upward by the regulating member contacting the longitudinal wall portion and the surface of the fixed member in contact inclined surface portion and the surface of the fixed member The fixed member is configured to be attached to the support plate.

  As a result, the fixed member can be reliably clamped to the support plate by the clamp member, and the fixed member can be prevented from moving by the restricting member. Further, since the clamp member is held in the loosely fitted state by the connecting member, it is possible to prevent the clamp member from moving with respect to the restricting member when unclamping, and the member to be fixed is reliably unfastened from the support plate. Can be clamped.

It is a side view which shows roughly the metal mold | die (fixed member) structure containing the clamp apparatus which concerns on embodiment of this invention. It is a figure which shows the metal mold | die structure seen from the A direction in FIG. It is a perspective view of the metal mold | die structure which expands and shows the B section in FIG. It is a perspective view showing a clamp device concerning an embodiment of the present invention. It is a top view of the clamp apparatus shown in FIG. FIG. 6 is a cross-sectional view of the clamping device taken along line Y6-Y6 in FIG. It is sectional drawing of the clamp apparatus along the Y7-Y7 line | wire in FIG. It is a front view of the clamp apparatus seen from the C direction in FIG. It is a principal part enlarged view which expands and shows the D section in FIG. It is explanatory drawing for demonstrating operation | movement of the clamp apparatus shown in FIG. It is sectional drawing which followed the Y11-Y11 line | wire in FIG.10 (c). FIG. 3 is a cross-sectional view taken along line Y12-Y12 in FIG. It is explanatory drawing for demonstrating the conventional clamp apparatus. It is explanatory drawing for demonstrating another conventional clamp apparatus.

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 (fixed member) structure including a clamp device 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 perspective view of a mold structure showing an enlarged B portion in FIG. 2. In FIG. 1, the mold structure in a state of being incorporated in a mold making apparatus is shown together with a blow head that accommodates foundry sand.

  A clamp device according to an embodiment of the present invention is for attaching a mold making die (fixed member) used in a mold making device for making a mold such as a casting sand core to a support plate, The mold making die 1 to which the clamp device according to the present embodiment is applied includes an upper die 10 and a lower die 20 as shown in FIGS.

  The mold making mold 1 is assembled into a mold making apparatus (not shown) with the upper mold 10 and the lower mold 20 attached to the support plates 15 and 25, respectively. In the mold making apparatus, the support plate 15 is moved downward in the direction of arrow Z in FIG. 1 to align the upper mold 10 and the lower mold 20, and then the communication hole is formed from the blow head 2 attached to the upper side of the support plate 15. The casting is formed by filling the cavity with casting sand at a predetermined pressure through (not shown).

  As shown in FIG. 2, the lower mold 20 includes four divided molds divided in the horizontal direction, that is, a first divided mold 21, a second divided mold 22, a third divided mold 23, and a fourth divided mold 24. ing. The first, second, third, and fourth split molds 21, 22, 23, and 24 are each formed in a substantially square shape in plan view, and cavities 21a, 22a, 23a, and 24a for molding a mold are formed from the upper surface. It is formed in a concave shape.

  Two positioning projections 21d for aligning the upper mold 10 and the lower mold 20 are formed on the first split mold 21 so as to protrude from the upper surface. The two positioning projections 21d are shown in FIG. As shown in FIG. Similarly for the second, third, and fourth split molds 22, 23, and 24, the second, third, and fourth split molds 22, 23, and 24 each have two positioning protrusions 22d that protrude from the upper surface. , 23d, 24d are formed in a diagonal direction.

  In the lower mold 20, the first divided mold 21 and the second divided mold 22 are arranged so as to face each other, and the third divided mold 23 and the fourth divided mold 24 are formed by the first divided mold 21 and the second divided mold 22. The first, second, third, and fourth split molds 21, 22, 23, and 24 are arranged in an annular shape.

  Each of the first split mold 21 and the second split mold 22 includes projecting portions 21c and 22c projecting in the Y direction from the center side in the X direction at the opposing side surface portions. The protrusion 22c of the second split mold 22 is provided so as to face.

  When the first, second, third, and fourth split dies 21, 22, 23, 24 are positioned at predetermined positions on the support plate 25, the first clamp device 30 and the second clamp device 40 described later are operated to The first, second, third, and fourth split molds 21, 22, 23, and 24 are attached to the support plate 25.

  Similarly for the upper mold 10, the upper mold 10 includes four divided molds divided in the horizontal direction, that is, the first, second, third, and fourth divided molds. The fourth divided mold is formed in a substantially quadrangular shape in plan view, and a cavity for forming a mold is formed in a concave shape from the upper surface.

  The upper mold 10 is also arranged so that the first divided mold and the second divided mold are opposed to each other, and the third divided mold and the fourth divided mold are opposed to each other with the first divided mold and the second divided mold interposed therebetween. The first, second, third, and fourth divided types are arranged in a ring shape. Each of the first split type and the second split type includes a protruding portion that protrudes in the Y direction from the center side in the X direction at the opposing side surface portions, and the first split type protruding portion and the second split type It is provided so as to face the protruding portion.

  The first, second, third and fourth split molds of the upper mold 10 are positioning protrusions of the first, second, third and fourth split molds 21, 22, 23 and 24 of the lower mold 20, respectively. Corresponding to 21d, 22d, 23d, and 24d, two positioning holes for positioning the upper mold 10 and the lower mold 20 are formed to be recessed from the upper surface, and the two positioning holes are formed in a diagonal direction. Is provided.

  In the mold making mold 1, when the upper mold 10 and the lower mold 20 are assembled in the mold making apparatus, the positioning hole of the upper mold 10 is positioned by the positioning protrusions 21 d, 22 d, 23 d of the lower mold 20. 24d, and the first, second, third and fourth split molds of the upper mold 10 and the first, second, third and fourth split molds 21, 22, 23, 24 of the lower mold 20 and Are combined.

  When the upper mold 10 and the lower mold 20 are combined, a cavity 21a formed by the first divided molds 21, a cavity 22a formed by the second divided molds 22, a cavity 23a formed by the third divided molds 23, and a fourth divided mold Four cavities are formed by the cavities 24a. In the mold making apparatus 1, one cavity or two or more cavities may be formed when the upper mold 10 and the lower mold 20 are combined.

  As described above, when the lower mold 20 is positioned at a predetermined position on the support plate 25, the first, second, third, and fourth divided molds 21 are operated by operating the first clamping device 30 and the second clamping device 30. 22, 23, 24 are attached to the support plate 25. For the upper mold 10, the positioning holes of the upper mold 10 are replaced with the positioning protrusions 21 d, 22 d, 23 d, 24 d of the lower mold 20. Are fitted to the support plate 15 by operating the first clamp device 30 and the second clamp device 40 thereafter.

  As shown in FIG. 2, in the mold making die 1, the first, second, third, and fourth split dies 21, 22, 23, 24 are arranged in an annular shape, and the first clamping device 30 is made up of the mold making die. The second clamping device 40 is disposed on the outer peripheral side of the mold 1 and is disposed on the inner peripheral side of the mold making die 1.

  Here, the 2nd clamp apparatus 40 which is a clamp apparatus which concerns on embodiment of this invention is demonstrated.

  The second clamping device 40 includes a space surrounded by the first, second, and third split molds 21, 22, 23, and a space surrounded by the first, second, and fourth split molds 21, 22, 24. The first split mold 21 and the second split mold 22 are attached to the support plate 25.

  In addition, the 2nd clamp apparatus 40 arrange | positioned in the space enclosed by the 1st, 2nd and 3rd division | segmentation type | molds 21, 22, and 23, and the 1st, 2nd and 4th division | segmentation type | molds 21, 22, and 24 are shown. Since the second clamping device 40 disposed in the space surrounded by the first and second divided molds 21, 22, and 23 is configured in the same manner, the second clamping device 40 is disposed in the space surrounded by the first and second divided molds 21, 22 and 23. The second clamp device 40 thus made will be described.

  As shown in FIG. 3, the protrusion 21 c of the first split mold 21 includes an upper protrusion 21 e that protrudes from the upper surface of the first split mold 21 and a lower protrusion 21 f that protrudes from the lower surface of the first split mold 21. The upper protruding portion 21e and the lower protruding portion 21f are formed in substantially the same rectangular shape in plan view.

  The upper protruding portion 21e and the lower protruding portion 21f are formed apart from each other in the vertical direction, and a clamped member 26 is fixedly attached to the lower protruding portion 21f. The clamped member 26 is formed symmetrically in the X direction, and has a vertical wall surface portion 26a extending in a substantially vertical direction continuously to a vertical wall surface portion 21g extending in a substantially vertical direction on both ends in the X direction of the lower protrusion 21f. And an inclined surface portion 26b inclined upward at a predetermined angle θ from the wall surface portion 26a.

  Similarly for the second split mold 22, the protrusion 22 c of the second split mold 22 includes an upper protrusion 22 e that protrudes from the upper surface of the second split mold 22 and a lower protrusion that protrudes from the lower surface of the first split mold 22. The upper protrusion 22e and the lower protrusion 22f are formed in substantially the same rectangular shape in plan view.

  The upper protrusion 22e and the lower protrusion 22f are formed apart from each other in the vertical direction, and a clamped member 27 is fixedly attached to the lower protrusion 22f. The clamped member 27 is formed symmetrically in the X direction, and a vertical wall surface portion 27a extending in a substantially vertical direction continuously to a vertical wall surface portion 22g extending in a substantially vertical direction on both ends of the lower protrusion 22f in the X direction; And an inclined surface portion 27b inclined upward at a predetermined angle θ from the vertical wall surface portion 27a.

  In this way, the inclined surface portion 26b and the vertical wall surface portion 21g provided below the inclined surface portion 26b are formed on the first split mold 21, and the inclined surface portion 27b and the inclined surface portion 27b below the second divided mold 22. And a vertical wall surface portion 22g provided on the surface. The second clamping device 40 is in contact with the inclined surface portions 26b and 27b and the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22 so that the first and second split molds 21 and 22 are attached to the support plate 25. Install.

  In the present embodiment, the second clamping device 40 is in contact with the inclined surface portions 26b and 27b and the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22, and the first and second split molds 21 and 22 are in contact therewith. Is attached to the support plate 25, but only the first split mold 21 may be attached to the support plate 25 in contact with the inclined surface portion 26b and the vertical wall surface portion 21g of the first split mold 21. Only the second split mold 22 may be attached to the support plate 25 in contact with the inclined surface portion 27 b and the vertical wall surface portion 22 g of the split mold 22.

  Moreover, in this embodiment, about the 1st and 2nd division | segmentation type | molds 21 and 22, by attaching the to-be-clamped members 26 and 27 to the lower side protrusion parts 21f and 22f, it attaches to the inclined surface parts 26b and 27b, and the vertical wall surface part 21g. The first and second split molds 21 and 22 may be formed so as to have the same shape as the clamped members 26 and 27.

  FIG. 4 is a perspective view showing a clamp device according to an embodiment of the present invention, and shows a second clamp device 40. 5 is a top view of the clamping device shown in FIG. 4, FIG. 6 is a cross-sectional view of the clamping device along line Y6-Y6 in FIG. 5, and FIG. 7 is a clamping device along line Y7-Y7 in FIG. FIG. 8 is a front view of the clamping device as viewed from the direction C in FIG. 5, and FIG. 9 is an enlarged view of a main part showing an enlarged portion D in FIG. 4 to 9, the clamped members 26 and 27 and the support plate 25 are also shown.

  As shown in FIGS. 4 to 9, the second clamping device 40 includes a cylinder 41 having a rod 42 movable in the X direction in the horizontal direction with respect to the first and second split molds 21 and 22, and a rod 42. A clamp member 50 to be connected, and a connecting member 45 for connecting the rod 42 and the clamp member 50 are provided.

  The cylinder 41 is fixedly attached to the support plate 25 and is disposed so that the rod 42 extends in the X direction in the horizontal direction. The rod 42 is formed in a substantially cylindrical shape, and specifically, the clamped members 26 and 27 of the first and second split molds 21 and 22 are disposed on the first and second split molds 21 and 22 side. It is formed so that the clamp member 50 is pressed by the tip end portion of the rod 42 through the washer 46. That is, as the rod 42 moves toward the clamped members 26, 27, the washer 46 gradually contacts and closely contacts the rod 42 and the clamp member 50. With this configuration, the clamp member 50 can be rotated. Conversely, when unclamping, the rod 42 is retracted in a direction away from the clamped members 26 and 27, so that the rod 42 and the clamp member 50 can be rotated. The washer 46 between them becomes free, and the connecting member 45 returns to the loosely fitted state.

  As shown in FIG. 9, the clamp member 50 includes an upper protrusion 51 and a lower protrusion 52 that protrude toward the first and second split molds 21 and 22, and is formed in a substantially U-shaped cross section. Yes. In the clamp member 50, the upper protruding portion 51 is formed to protrude from the lower protruding portion 52.

  On the lower surface of the upper projecting portion 51, a portion where the clamped members 26 and 27 of the first and second split molds 21 and 22 are arranged on the first and second split molds 21 and 22 side. An inclined surface portion 51a that is inclined upward at a predetermined angle θ as it goes to is provided. On the other hand, a vertical wall surface portion 52 a extending in a substantially vertical direction is provided at the tip of the lower protrusion 52.

  When the clamp member 50 is pressed by the tip of the rod 42 and attaches the first and second split molds 21 and 22 to the support plate 25, the inclined surface portion 51a of the upper protrusion 51 is formed by the first and second split molds 21, 22 is in contact with the inclined surface portions 26b and 27b, and the vertical wall surface portion 52a of the lower protruding portion 52 is in contact with the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22.

  The inclined surface portion 51a of the upper protruding portion 51 of the clamp member 50 and the vertical wall surface portion 52a of the lower protruding portion 52 are inclined to the inclined surface portions 26b and 27b and the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22, respectively. When the first and second split dies 21 and 22 are clamped by the clamp member 50, the inclined surface portion 51a and the vertical wall surface portion 52a of the clamp member 50 are respectively formed into the first and second split dies 21, The inclined surface portions 26b and 27b and the vertical wall surface portions 21g and 22g are in surface contact with each other.

  As can be seen from the above description, the inclined surface portion 51 a of the upper protrusion 51 of the clamp member 50 contacts the inclined surface portions 26 b and 27 b of the first and second split molds 21 and 22, and the lower protrusion 52 of the clamp member 50. The vertical wall surface portion 52a contacts the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22, and the clamp member 50 uses the contact portion between the vertical wall surface portions 21g and 22g and the lower protruding portion 52 as a fulcrum. Further, the clamp member 50 and the rod member 42 come into contact with each other via a washer 46. In other words, the clamping force from above can be reliably transmitted to the inclined surface portions 26b and 27b by simultaneously pressing these surface portions against each other.

  The connecting member 45 is constituted by a mounting bolt, and includes a head portion 45a having a hexagonal hole portion and a shaft portion 45b having a screw portion. The shaft portion 45 b of the connecting member 45 is formed to be narrower than the distal end portion of the rod 42, and the distal end portion of the shaft portion 45 b is fixedly attached to a screw hole portion 42 b formed at the distal end portion of the rod 42.

  The connecting member 45 is also configured to hold the clamp member 50 in a loosely fitted state. Specifically, the clearance between the connecting member 45 and the clamp member 50 is set to 0.5 mm to 1.0 mm so as to be loosely fitted. An attachment hole 50a for attaching the connecting member 45 is formed in the clamp member 50 so as to penetrate in the X direction on the upper protrusion 51 side of the clamp member 50.

  The mounting hole 50a of the clamp member 50 is formed to have an inner diameter larger than the outer diameter of the first hole 50b formed with the inner diameter larger than the outer diameter of the head 45a of the connecting member 45 and the shaft 45b of the connecting member 45. Second hole 50c. The second hole 50 c is also formed with an inner diameter smaller than the outer diameter of the head 45 a of the connecting member 45 and with an inner diameter smaller than the outer diameter of the rod 42.

  As shown in FIG. 9, the connecting member 45 is inserted from the first hole 50 side of the clamp member 50 and is attached to the tip end portion of the rod 42 to hold the clamp member 45 in a loosely fitted state. It is formed so that it can be. A washer 46 is disposed between the connecting member 45 and the rod 42.

  The clamp member 50 is also provided with a foreign matter intrusion preventing member 55 for preventing foreign matters (for example, casting sand, dust, resin, etc.) from entering. The foreign matter intrusion prevention member 55 is for preventing foreign matter from entering the mounting hole 50a of the clamp member 50, and extends downward from one end side in the X direction of the upper surface portion 55a extending in the horizontal direction and the upper surface portion 55a. And a vertical surface portion 55b.

  In the clamp member 50, an insertion hole 50d for inserting the foreign matter intrusion prevention member 55 is formed so as to penetrate the upper protrusion 51 in the vertical direction. The foreign matter intrusion prevention member 55 is inserted into the insertion hole 50d of the clamp member 50 so that the upper surface portion 55a extends from the vertical surface portion 55b to the rod 42 side, and covers the attachment hole portion 50a to which the connecting member 45 is attached. Is formed.

  The foreign matter intrusion prevention member 55 has an arc-shaped cutout portion 55c formed on the upper surface portion 55a. By aligning the cutout portion 55c with the head portion 56a of the positioning bolt 56 attached to the upper surface of the clamp member 50, the clamp member Positioned at 50 predetermined positions.

  The foreign matter intrusion prevention member 55 is also positioned at a predetermined position of the clamp member 50, and then the fastening bolt 57 is attached to the upper surface of the clamp member 50. 55 b is fixed and attached to the clamp member 50.

  The second clamp device 40 also includes two restricting members 60 that restrict the upward movement of the clamp member 50 at a predetermined position. The restriction member 60 is fixedly attached to the support plate 25 and is disposed on both sides of the clamp member 50 in the Y direction. The two regulating members 60 are formed symmetrically so as to sandwich the clamp member 50 with a clearance of about 0.5 mm, for example. Therefore, the rotation of the clamp member 50 is ensured by the clearance between the connecting member 45 and the clamp member 50 and the clearance between the two restricting members 60 and the clamp member 50 described above. Further, by providing these clearances, it is possible to obtain a merit that biting of sand or the like is suppressed.

  The regulating member 60 is formed so that the upper side protrudes toward the clamp member 50 as compared with the lower side, and the lower surface portion 60a of the portion protruding toward the clamp member 50 is formed to extend in a substantially horizontal direction. When the first and second split molds 21 and 22 are clamped by the clamp member 50, the lower surface portion 60 a of the restriction member 60 engages with the protruding portions 58 that protrude outward from both side surfaces of the clamp member 50 in the Y direction. The clamp member 50 is formed so as to restrict the upward movement thereof. As shown in FIG. 7, the protrusion 58 of the clamp member 50 has a substantially semicircular upper surface.

  In the second clamp device 40, the vertical wall surface 52 a of the clamp member 50 is the vertical wall surface of the first and second split molds 21 and 22 in a state where the upward movement of the clamp member 50 is restricted at a predetermined position by the restriction member 60. The inclined surface portion 51a of the clamp member 50 is in contact with the inclined surface portions 26b and 27b of the first and second split molds 21 and 22, and the first and second split molds 21 and 22 are supported by the support plates. Attach to 25.

FIG. 10 is an explanatory diagram for explaining the operation of the clamp device shown in FIG. 4, and is an explanatory diagram for explaining the operation of the second clamp device 40.
When the first and second split molds 21 and 22 are attached to the support plate 25 using the second clamp device 40, the first and second split molds 21 are attached to the support plate 25 as shown in FIG. , 22 is moved to the first and second split molds 21, 22 side with the clamp member 50 connected in a state where they are positioned at predetermined positions.

  Since the clamp member 50 is held in a loosely fitted state on the connecting member 42 fixed to the distal end portion of the rod 42, the clamp member 50 is held movably in the vertical direction and the X direction. For example, as shown in FIG. 10A, the clamp member 50 is held in a state where the upper side is inclined to the rod 42 side as compared with the lower side.

  When the rod 42 is moved in the X direction to the first and second split molds 21 and 22 from the state shown in FIG. 10A, the clamp member 50 is moved by the tip of the rod 42 via the washer 46. The first and second split molds 21 and 22 are pressed, and as shown in FIG. 10B, a part of the vertical wall surface 52a of the lower protrusion 52 of the clamp member 50 and the first and second split molds. A part of the vertical wall surface portion 21g of 21 and 22 abuts.

  When the rod 42 is further moved in the X direction toward the first and second split molds 21 and 22 from the state shown in FIG. 10B, the clamp member 50 is counteracted by the tip of the rod 42 via the washer 46. The first and second split molds 21 and 22 are further pressed, and as shown in FIG. 10C, the vertical wall surface 52a of the lower protrusion 52 of the clamp member 50 and the first and first portions in FIG. The clamp member 50 is rotated in the direction of arrow R with the contact portions of the two split molds 21 and 22 with the vertical wall surfaces 21g and 22g as fulcrums, and the vertical wall surface 52a of the clamp member 50 is the first and second split molds 21. , 22 are in contact with the vertical wall surface portions 21g, 22g, and the inclined surface portion 51a of the clamp member 50 is in contact with the inclined surface portions 26b, 27b of the first and second split molds 21, 22.

  FIG. 11 is a cross-sectional view taken along line Y11-Y11 in FIG. As shown in FIG. 11, the vertical wall surface portion 50a of the clamp member 50 contacts the vertical wall surface portions 21g and 22g of the first and second split molds 21 and 22, and the inclined surface portion 51a of the clamp member 50 is the first and second. When contacting the inclined surface portions 26 b and 27 b of the split molds 21 and 22, the lower surface portion 60 a of the regulating member 60 contacts the protruding portion 58 of the clamp member 50.

  In the present embodiment, the vertical wall surface portion 52 a of the clamp member 50 is the vertical wall surface portions 21 g and 22 g of the first and second split molds 21 and 22 in a state where the upward movement of the clamp member 50 is restricted by the restriction member 60. And the inclined surface portion 51a of the clamp member 50 are in surface contact with the inclined surface portions 26b and 27b of the first and second split molds 21 and 22, respectively.

  In this way, in the second clamping device 40, the vertical wall surface 52 a of the clamping member 50 is in the first and second split molds 21 in a state where the upward movement of the clamping member 50 is regulated at the predetermined position by the regulating member 60. , 22 and the inclined surface 51a of the clamp member 50 abuts the inclined surfaces 26b, 27b of the first and second split molds 21, 22, and the first and second split molds 21 are in contact with the vertical wall surfaces 21g, 22g. , 22 are attached to the support plate 25.

  As described above, the clamping device 40 according to the present embodiment includes the upper protruding portion 51 having the inclined surface portion 51a and the lower protruding portion 52 having the vertical wall surface portion 52a, and has a substantially U-shaped cross section coupled to the rod 42. A clamp member, a connecting member 45 that is fixed to the rod 42 and holds the clamp member 50 in a loosely fitted state, and a regulating member 60 that restricts the upward movement of the clamp member 50 at a predetermined position. 50 is pressed toward the molds 21 and 22 by the rod 42, so that the vertical wall surface portion 51 a is in the molds 21 and 22 in a state where the upward movement of the clamp member 50 is regulated at a predetermined position by the regulation member 60. And the inclined surface portion 51a contacts the inclined surface portions 26b and 27b of the molds 21 and 22, and the molds 21 and 22 are attached to the support plate 25. Put.

  Thereby, the molds 21 and 22 can be reliably clamped to the support plate 25 by the clamp member 50, and the movement of the molds 21 and 22 during molding can be suppressed by the restriction member 60. In addition, since the clamp member 50 is held in the coupling member 45 in a loosely fitted state, it is possible to prevent the clamp member 50 from moving with respect to the restriction member 60 when unclamping. Unclamping from the support plate 25 can be ensured.

  In addition, since the molds 21 and 22 are the lower mold 20 of the mold making mold 1, the above-described effects can be effectively obtained in mold making that can be relatively frequently performed in mold maintenance and mold replacement. Can do. In particular, in the lower mold 20 of the mold making mold 1, casting sand is likely to accumulate, and there is a risk that the casting sand may enter between the clamp member 50 and the molds 21 and 22 and between the clamp member 50 and the regulating member 60. Therefore, the effect can be effectively obtained.

  Further, the clamp member 50 includes a foreign matter intrusion preventing member 55 for preventing foreign matter from entering, thereby suppressing the intrusion of foundry sand between the clamp member 50 and the molds 21 and 22. And the effect can be more effectively achieved.

  On the other hand, the first clamping device 30 includes a cylinder 31 having a rod 32 movable in the Y direction in the horizontal direction, and a clamp member 33 extending in the Y direction connected to the rod 32, and the clamp member 33 is a rod 32 is moved in the Y direction by moving in the Y direction in the horizontal direction.

  12 is a cross-sectional view taken along line Y12-Y12 in FIG. As shown in FIG. 12, the clamp member 33 includes an inclined surface portion 33 a that is inclined upward toward the first split mold 21 on the lower surface of the tip portion, and is provided on the side surface portion of the first split mold 21 facing the clamp member 33. Is formed with an inclined surface portion 21 b corresponding to the inclined surface portion 33 a of the clamp member 33.

  When the rod 32 is moved to the first split mold 21 side in the Y direction in the horizontal direction, the clamp member 33 is moved in the Y direction to the first split mold 21 side, and the inclined surface portion 33a of the clamp member 33 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, second, third, and fourth split molds 21, 22, 23, 24 are positioned at predetermined positions of the support plate 25, the first, second, third, The side parts in the Y direction of the fourth split molds 21, 22, 23, and 24 are clamped, so that the first, second, third, and fourth split molds 21, 22, 23, and 24 are attached to the support plate 25. Fixed and attached.

  In the mold making mold 1, as described above, the lower mold 20 is formed by using the first clamping device 30 and the second clamping device 40, the first, second, third, and fourth divided molds 21, 22, 23, 24 is attached to the support plate 25. Similarly, the upper mold 10 is also provided with the first, second, third and fourth divided molds using the first clamping device 30 and the second clamping device 40. 15 can be attached.

  In the mold making mold 1 shown in FIGS. 1 and 2, the first, second, third, and fourth divided molds 21, 22, 23, 24 are arranged in a Japanese character shape in plan view, and the mold making is performed. The second clamping device 40 is disposed on the inner peripheral side of the mold 1 and the first clamping device 30 is disposed on the outer peripheral side of the mold making device 1, but is disposed on the outer peripheral side of the mold making device 1. It is also possible to use the second clamping device 40 instead of the first clamping device 30.

  As described above, the clamping mechanism according to the present embodiment has the clamp member 50 having a substantially U-shaped cross section provided with the upper protruding portion 51 having the inclined surface portion 51a and the lower protruding portion 52 having the vertical wall surface portion 52a. The connecting member 45 is fixed to the rod 42, the clamp member 50 is held in the loosely fitted state by the connecting member 45, and the restricting member 60 that restricts the upward movement of the clamp member 50 at a predetermined position is supported by the support plate 25. The clamp member 50 is pressed to the molds 21 and 22 side by the rod 42, so that the upward movement of the clamp member 50 is restricted at a predetermined position by the restricting member 60. The vertical wall surface portion 52a is brought into contact with the vertical wall surface portions 21g and 22g of the molds 21 and 22 to support the molds 21 and 22, respectively. Configured to attach to the rate 25.

  Thereby, the molds 21 and 22 can be reliably clamped to the support plate 25 by the clamp member 50, and the movement of the molds 21 and 22 during molding can be suppressed by the restriction member 60. Further, since the clamp member 60 is held in the connecting member 45 in a loosely fitted state, it is possible to prevent the clamp member 50 from moving with respect to the regulating member 60 when unclamping. Unclamping from the support plate 25 can be ensured.

  As described above, according to the present invention, it is possible to securely clamp the fixed member, suppress the movement of the fixed member, and reliably unclamp the fixed member. It is suitably used in the technical field of desired molding using a clamping device for clamping a member. In the above embodiment, the mold making mold is shown as an example of the member to be fixed, but it is applied to a wide range of fields such as a press mold for molding metal powder and ceramic powder, an injection mold, a tableting mold for tablet molding, etc. it can.

1 Mold (fixed member)
DESCRIPTION OF SYMBOLS 10 Upper mold | type 15 Upper support plate 20 Lower mold | type 21g 1st division | segmentation type vertical wall surface part 22g 2nd division | segmentation type | mold vertical wall surface part 25 Lower support plate 26, 27 Clamped member 26d, 27d The inclined surface part of a clamped member 30 First Clamp Device 40 Second Clamp Device 41 Cylinder 42 of Second Clamp Device Rod 45 of Second Clamp Device Connecting Member 50 Clamp Member 51 Upper Projection 51a Inclined Surface 52 of Clamp Member Lower Projection 52a Vertical of Clamp Member Wall portion 55 Foreign matter intrusion preventing member 60 Restricting member

Claims (4)

A fixed member clamping device for attaching a fixed member to a support plate,
A cylinder having a rod movable in a horizontal direction with respect to the fixed member, and a cylinder attached to the support member;
An upper projecting portion having an inclined surface which is inclined upwardly as the toward the fixation member side which contacts inclined surface portion and the surface inclined downward toward the rod side provided on the rod side of the fixed member, wherein A lower projecting portion having a vertical wall surface portion provided below the inclined surface portion of the upper projecting portion in surface contact with the vertical wall surface portion provided below the inclined surface portion of the fixed member, and connected to the rod; A clamp member having a substantially U-shaped cross section;
A connecting member that is fixed to the tip of the rod and holds the clamp member in a loosely fitted state, and connects the rod and the clamp member;
Includes a portion extending above said mounted on a support plate Rutotomoni the clamp member, the movement lower surface portion extending above the clamp members to the upper of the clamping member by engaging the upper surface of said clamping member and the regulating member win regulations,
With
When the rod moves to the fixed member side and presses the clamp member toward the fixed member side by the distal end portion of the rod, the distal end portion of the rod is on the side opposite to the fixed member of the clamp member. Press the upper protrusion side,
The clamping member by being pressed against the member to be fixed side by the tip of the rod, the vertical wall portion of the clamping member is in the mobile GaTadashi braking state to above the clamping member by the restricting member wherein the inclined surface portion of the clamping member is in contact inclined surface portion and the surface of the member to be fixed while contacting the vertical wall portion and the surface of the fixing member, attaching the member to be fixed to the support plate,
A clamp device for a member to be fixed. The fixed member is a lower mold of a mold making mold,
The clamp device for a fixed member according to claim 1. The clamp member includes a vertical surface portion disposed on the fixed member side of the connecting member that holds the clamp member , and covers a portion where the clamp member is held on the connecting member from the fixed member side. Equipped with a foreign matter intrusion prevention member,
The clamp device for a fixed member according to claim 1 or 2, characterized in that A fixing member clamping mechanism for attaching a fixing member to a support plate,
A cylinder having a rod movable in a horizontal direction with respect to the fixed member is attached to a support member,
An upper projecting portion having an inclined surface which is inclined upwardly as the toward the fixation member side which contacts inclined surface and surface inclined downward toward the rod side provided on the rod side of the fixed member, wherein It has a substantially U-shaped cross-section with a lower protrusion having a vertical wall surface provided below the inclined surface portion of the upper protrusion that is in surface contact with the vertical wall surface provided below the inclined surface portion of the fixed member. Connecting a clamp member to the rod;
Fixing the connecting member that connects the rod and the clamp member to the tip of the rod and holding the clamp member in a loose-fitting state on the connecting member;
Wherein the regulating member win regulations upward movement of the clamping member by the lower surface of the upper extending portion of the clamping member and the clamping member comprises a portion extending upwardly of engagement with the upper surface of said clamping member Attached to the support plate,
When the rod moves to the fixed member side and presses the clamp member toward the fixed member side by the distal end portion of the rod, the distal end portion of the rod is on the side opposite to the fixed member of the clamp member. Press the upper protrusion side,
The clamping member by being pressed against the member to be fixed side by the tip of the rod, a vertical wall portion of the clamp member moves GaTadashi braking state to above the clamping member by the restricting member said inclined surface portion of the clamping member into contact inclined surface portion and the surface of the member to be fixed with contacting the vertical wall portion and the surface of the fixed member, and constitutes the member to be fixed to mount to the support plate,
A clamp mechanism for a member to be fixed.

Images