JPH0673735B2 - Small casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a compact casting machine for casting a key rotor arranged in an ignition key.

(Prior Art) Conventionally, a small casting machine for casting a key rotor has an insert piece arranged between a fixed-side mold and a movable-side mold, and moves the movable-side mold toward the fixed-side mold. Then, the die is clamped, the slide block is moved in a direction orthogonal to the moving direction of the mother die, and the cross arrow is inserted into the insert piece, whereby a key rotor having a plurality of lock plate insertion holes and slide piece holes is provided. Can be cast.

(Problems to be solved by the invention) However, in the small casting machine as described above, since the slide block for inserting the horizontal arrow is inserted into the insert piece and fixed from the outside of the mother die, The mounting position for the master mold is specified in advance. Therefore,
In such a small casting machine, when casting various key rotors having different molding positions of the slide piece holes with respect to the lock plate insertion holes, the mother die needs to be replaced each time, so when casting many types of key rotors. Has a problem that the mother die replacement work is complicated.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention provides a cavity between a fixed-side mold and a movable-side mold, and a cavity in the mold. In a small casting machine provided with a first and a second slide block for supporting the core so that it can be retracted, the insert piece is provided so as to be integrally movable with the movable mold and detachable from the movable mold, On the side of the fixed-side mother die that faces the movable-side mother die, there is provided a cam in the shape of a mortar that surrounds the insert piece during mold clamping and expands in diameter toward the movable-side die. One slide block is supported so as to be movable in the radial direction of the same insert piece, and a groove that engages with the cam is provided in the first slide block, and the first slide block is inserted into the insert piece with mold closing and mold opening. It is configured to be movable in the radial direction.

(Operation) By opening and closing the mother die by the above means, the first slide block moves with respect to the insert piece, and the first horizontal arrow thereof appears and disappears in the cavity, and the first slide block is placed at an arbitrary position of the cam. Engageable.

Therefore, various sliding directions of the first slide block can be accommodated without exchanging both the fixed-side and movable-side mother molds.

(Embodiment) Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In a compact casting machine 1 for casting a key rotor, a casting machine body 3 is installed on a pedestal 2 and the casting machine body 3 is installed.
A trimming device 4a is installed on the side of. Then, the casting machine body 3 and the trimming device 4a are operated by the driving force of a plurality of hydraulic cylinders based on the operation of the control device 4b installed on the side of the gantry 2, and the key rotor is cast by the casting machine body 3 and The burrs, overflows, etc. generated during the casting are removed by the trimming device 4a.

Next, the mold device of the casting machine main body 3 will be described. As shown in FIG. 1, the mold device 5 includes a fixed-side insert piece having a substantially circular cross section between a fixed-side mold 6 and a movable-side mold 7. 8 is provided with a movable piece 9 having a substantially circular cross section,
The key rotor is cast in the insert piece 10. Fixed side mold 6
Is fixed to the casting machine body 3 so as not to be movable, and a side surface thereof is provided with a mounting recess 11 for supporting the fixed side insert piece 8.

The fixed-side insert piece 8 has a locking groove 12 formed on the outer peripheral surface thereof in the circumferential direction, and the fixed-side mold 6 is formed in the locking groove 12 as shown in FIG.
A pair of first liners 13 is inserted from the upper surface of the.
That is, the first liner 13 is formed in a sword shape, and the upper end thereof is connected by the connecting member 14, and the connecting member 14
A first operation handle 15 extending upward is attached to the. The fixed-side mother die 6 is formed with an insertion hole 16 into which the first liner 13 and the connecting member 14 are fitted and inserted,
Insert the fixed side insert piece 8 into the mounting recess 11
When the first liner 13 is inserted from the information until the connecting member 14 is substantially immersed in the fixed side mold 6, the first liner 13 is inserted.
The tip of 13 is engaged with the locking groove 12 of the fixed-side insert piece 8 so that the fixed-side insert piece 8 is fixed in the mounting recess 11.

A stopper 17 for preventing the first liner 13 from coming off is provided in the vicinity of the insertion hole 16 on the upper surface of the stationary mold 6. The stopper 17 will be described with reference to FIG. 5. The case 18 of the stopper 17 is formed in a rectangular parallelepiped shape with the insertion hole 16 side opened, and is fixed to the fixed-side mother die 6, and a long hole 19 is formed in the upper surface. ing. An engaging member 20 is supported in the case 18 so as to be retractable from the case 18 in the insertion hole 16 direction, and a coil spring 21 is disposed between the engaging member 20 and the inner wall of the case 18 for engagement. The member 20 is biased to the outside of the case 18 by its biasing force.

The operation knob is provided on the engaging member 20 from the outside of the case 18 through the elongated hole 19.
22 is screwed in, and the engaging member 20 can be retracted into and retracted from the case 18 within a range in which the base end of the operation knob 22 can move in the long hole 19. The tip end of the engaging member 20 is formed with a slope 23 that extends obliquely upward, and the lower part of the slope 23 is cut off to form a beak-shaped projection 24. The projecting portion 24 always projects to the outside of the case 18 by the urging force of the coil spring 21, and when the first liner 13 is inserted into the fixed-side mother die 6, the end portion of the connecting member 14 is the slope of the engaging member 20. When it abuts against 23, the engaging member 20 is pushed back into the case 18 against the urging force of the coil spring 21 as shown in FIG.
When the end portion is crossed over, as shown in FIG. 6, the projection 24 is coupled to the connecting member 14 to prevent the first liner 13 from coming off from the fixed-side mother die 6. Further, when the operating knob 22 is operated from the state shown in FIG. 6 to retract the engaging member 20 into the case 18, the engagement between the connecting member 14 and the engaging member 20 is released, and the first liner 13 is released. Can be pulled out from the insertion hole 16.

As shown in FIG. 1 and FIG. 2, a mortar-shaped cam 25 is formed on the side surface of the fixed-side mother die 6, and the left and right side portions of the cam 25 are removed by about 30 degrees, respectively. Avoiding block 44. As shown in FIG. 1, a support rod 26 is inserted through the lower portion of the movable-side mother die 7, and is supported so as to be movable in the left-right direction in the figure. Its support rod 26
A support block 27 is fixed to the tip of the movable block 9 and the movable block 9 is supported by the support block 27. The movable-side insert piece 9 is composed of an outer die 9a and an inner die 9b. A locking groove 28 is formed in the outer peripheral surface of the outer die 9a in the circumferential direction similarly to the fixed-side insert piece 8, and a lower outer peripheral surface is formed. A support groove 29 is formed in the axial direction. Support ridges 30 that fit into the support grooves 29 are formed in the support block 27, and support arms 31 project from the support ridges 30 on both sides in an arc shape. And support protrusions
30 is fitted in the support groove 29 of the outer die 9a, and the support arm 31 is engaged in the locking groove 28 so that the movable-side insert piece 9 is supported on the support block 27.

The outer mold of the movable-side insert piece 9 is provided at the center of the side surface of the movable-side mother die 7.
The mounting recess 32 for mounting the 9a is formed, and as shown in FIG.
9a is located in the mounting recess 32. As shown in FIG.
A pair of second liners 33 are fitted and inserted into the movable mold 7 from above. Similar to the first liner 13, the upper end of the second liner 33 is connected by a connecting member 34, and a second operation handle 35 extending upward is attached to the connecting member 34. Then, the second liner 33 is connected to the connecting member 34.
If it is inserted into the movable side mold 7 until it is substantially immersed, the second liner 33 engages with the locking groove 28 of the outer mold 9a and the outer mold 9a becomes immovable with respect to the movable side mold 7. It is supposed to be fixed. Further, the stopper 17 is also provided on the upper surface of the movable-side mother die 7 to prevent the second liner 33 from coming off.

As shown in FIG. 1, an inner die 9b facing the fixed side insert piece 8 is fixed to the center of the outer die 9a of the movable side insert piece 9.
A cavity 36 is formed in the inner mold 9b, and the cavity 36 is provided with a gate 37 connected to the fixed-side insert piece 8. The fixed-side insert piece 8 is provided with a guide pin 8a which is inserted into the inner die 9b of the movable-side insert piece 9, and a front arrow 8b which projects into the cavity 36. The front arrow 8b is for molding a key insertion hole in the key rotor. A sliding groove 38 is formed in a radial direction on a side surface of the outer die 9a facing the fixed-side mother die 6, and a multi-directional slide block 39 as a first slide block is arranged in the sliding groove 38. There is. That is, as shown in FIG. 1, the mounting bolt 40 is inserted into the multi-directional slide block 39 and the mounting bolt 40
The tip of the is screwed into the inner mold 9b, and a coil spring 41 is arranged around the mounting bolt 40 between the inner mold 9b and the outer mold 9a. Therefore, the multi-directional slide block 39 is attached to the inner mold 9b by the mounting bolt 40, is supported so as to be movable only in the radial direction of the insert piece 10 along the sliding groove 38, and is always radially outward by the coil spring 41. Is urged to.

A cam groove 42 that fits into the cam 25 is formed on the side surface of the multi-directional slide block 39 that faces the fixed-side mother die 6.
As shown in the drawing, when the mold 25 is clamped, the cam 25 is recessed in the cam groove 42, and when the movable side mold 7 is moved in the mold opening direction, that is, the arrow A direction from this state, the action of the cam 25 and the cam groove 42 As a result, the multi-directional slide block 39 moves in the radial direction outside of the insert piece 10, that is, in the same figure, moves upward while moving in the same direction. A first horizontal arrow 43 for molding a slide piece hole is attached to the key rotor cast in the cavity 36 of the inner mold 9b in the multi-directional slide block 39, and by the radial movement of the multi-directional slide block 39. The first horizontal arrow 43 is adapted to appear in and out of the cavity 36.

As shown in FIG. 3, a pair of standard slide blocks 44 serving as a second slide block are provided on both sides of the movable mold block 7.
Are movably supported in the horizontal direction toward the insertion piece 10, and a second horizontal arrow 45 for forming a lock plate insertion hole in the key rotor is attached to the tip end portion thereof. The standard slide block 44 is driven by a first hydraulic cylinder 46 shown in FIG. 4, and based on the movement thereof, the second horizontal arrow 45 is projected and retracted with respect to the cavity 36.

A positioning hole 47 is formed in the center of each standard slide block 44, and an insertion hole 48 having the same diameter as that of the positioning hole 47 is formed in the movable mold block 7 as shown in FIG. Also,
Guide pins 50 project from both sides of the fixed-side mold 6 toward the movable-side mold 7. Then, after the standard slide block 44 is moved toward the movable-side insert piece 9, the movable-side mold 7 is moved toward the fixed-side mold 6 to perform mold clamping, and the guide pin 50 is positioned in the positioning hole. 47 and the insertion hole 48 are inserted to prevent movement of the standard slide block 44 with respect to the mother molds 6 and 7, and in this state, the second horizontal arrow 45 is projected to a predetermined position in the cavity 36. .

The movable mold 7 is moved in the left-right direction in FIG. 1 by the driving force of the second hydraulic cylinder 51 shown in FIG. As shown in FIG. 1, a first extruding plate 52 is provided behind the movable-side mother die 7, and the first extruding plate 52 is located further behind it as shown in FIG. The second pushing plate 53 is connected to the second pushing plate 53 by a connecting rod 54, and the second pushing plate 53 is driven by a third hydraulic cylinder 55 in the left-right direction in the figure. The first extrusion plate 52 penetrates the movable-side mother die 7 and the movable-side insert piece 9 to form a cavity.
The base end of the push-out pin 52 protruding into the 36 and the gate pin 57 also protruding into the gate 37 is supported. After the mold is opened, the third hydraulic cylinder 55 is operated and the second pushing plate 53 is moved in the direction of arrow B in FIG.
The first extruding plate 52 is moved in the same direction through the extruding pin 56 to extrude the casting in the cavity 36 to the outside of the cavity 36, and at the same time, the gate pin 57 removes a molding residue near the gate 37. It is like this. The first pushing plate 52 has a third operation handle 58 extending upward.
Is provided, and by the operation thereof, the connection between the first pushing plate 52, the pushing pin 56 and the gate pin 57 can be released.

Extrusion rods 59 for ejecting the movable-side insert piece 9 from the mounting concave portion 32 of the movable-side mother die 6 are penetrated on both sides of the second extruding plate 53, and a direct connection jig 60 is provided on the penetrating portion. Extruded plate
The push rod 59 is supported by 53 so that it can move up and down.
As shown in FIG. 7, the tip end is in contact with the side surface of the outer die 9a of the movable-side insert piece 9. That is, the direct connection jig 60 has an enlarged diameter portion at the top.
An engaging hole 62 provided with 61 is formed, and a bulging portion 63 that can be inserted into the engaging hole 62 only at the enlarged diameter portion 61 is formed on the pushing rod 59. Then, the fourth operation handle 64 extending upward from the direct connection jig 60 is operated to pull up the direct connection jig 60, and the bulging portion 63 is engaged with the lower portion of the locking hole 62. With the movement of the plate 53, the push rod 59 is moved in the same direction.

Next, the operation of the compact casting machine 1 configured as described above will be described.

Now, when replacing the inserts 8 and 9 installed between the mother dies 6 and 7 as shown in FIG. 1, first, the standard slide block 4
4 is retracted from the movable-side insert piece 9, and the operating knob 22 of the stopper 17 of the first liner 13 is operated to engage the engaging member.
The engaging member 20 and the connecting member 14 are disengaged by retreating 20 and the first liner 13 is pulled out from the fixed-side mother die 6. In this state, when the movable side mold 7 is moved in the direction of arrow A in FIG. 1 to open the mold, the fixed side insert piece 8 is supported by the guide pin 8a and moves integrally with the movable side insert piece 9. Then, after moving the movable side mold 7 by a predetermined distance, the stopper 17 of the second liner 33 is released to pull out the liner 33, and the fourth operation handle 64 is operated to pull up the diameter jig 60. In this state, when the third hydraulic cylinder 55 is operated to move the second pushing plate 53 in the direction of arrow B in FIG. 8, the pushing rod 59 is moved integrally with the pushing plate 53, and the pushing rod 59 is moved. At the tip, the insert piece 10 is pushed out of the mounting recess 32 of the movable side mold 7 and is supported between the two molds 6 and 7 while being supported on the support block 27 at the tip of the support rod 26 as shown in FIG. Extruded. And in this state 1 piece
The 0 can be easily removed from the support block 27.

When the insert piece 10 is attached between the mother molds 6 and 7, the insert piece 10 is first placed on the support block 27 as shown in FIG. That is, the supporting protrusions 30 of the support block 27 are fitted into the supporting grooves 29 provided in the outer die 9a of the movable-side insert piece 9, and the supporting arms 31 are fitted into the locking grooves 28. When the movable side mold 7 is moved and clamped in this state, the insert piece 10 is automatically fitted into the mounting recess 11 of the fixed side mold 6, and thereafter, based on the operation of the movable side mold 7. The support rod 26 is immersed in the mother die 7, and the insertion piece 10 is automatically housed between the mother die 6 and 7 as shown in FIG. Then, when the first and second liners 13 and 33 are fitted into both the mother molds 6 and 7, the movable side insert piece 9 is fixed to the movable side mold die 7, and the fixed side insert piece 8 is fixed side mold die. It is fixed at 6. At this time, both liners 13,33
The stopper 17 is surely prevented from coming off. And
When the fourth operation handle 64 is pushed down to release the engagement between the direct connection jig 60 and the pushing rod 59, the replacement of the insert piece 10 is completed.

On the other hand, when the key rotor is cast by the small casting machine 1, the standard slide block 44 is first moved by the first hydraulic cylinder 46 in the movable side mother die 7 which is opened.
Moved toward the center of the
It is projected into 36. Then, when the movable side mold 7 is moved to the fixed side mold 6 side, the cam projected from the fixed side mold 6
The cam groove 42 of the multi-directional slide block 39 is engaged with 25, and the multi-directional slide block is moved as the movable side mold 7 moves.
39 is moved toward the center of the movable-side insert piece 9 along the sliding groove 38, and as shown in FIG. 1, when the mold clamping is completed, the first lateral arrow 43 thereof is projected into the cavities 36. At the same time, the front arrow 8b is penetrated by the second horizontal arrow 45. Further, in parallel with this operation, the guide pin 50 is inserted into the positioning hole 47 and the insertion hole 48 by the movement of the movable side mold 7.

When the mold clamping is completed by the above operation, hot water is injected into the cavity 36 from the gate 37, and the mold opening is started after a predetermined time. That is, when the movable mold 7 is moved in the direction of arrow A in FIG. 1, the guide pin 50 is pulled out from the insertion hole 48 and the positioning hole 47, and the cam 25 and the cam groove 42 work together to cause the multidirectional slide block 39 to move. Is moved upward in the same figure, the first horizontal arrow 43 is pulled out from the cavity 36, the front arrow 8b is pulled out from the second horizontal arrow 45, and then the standard slide block 44 is moved and its second arrow Yokoya
45 is pulled out of the cavity 36.

In this way, when the standard slide block 44 is moved by a predetermined distance, the third hydraulic cylinder 55 is actuated to move the second pushing plate 52 in the direction of arrow B in FIG. 8, and based on this movement, the connecting rod is moved. The first extruding plate 52 is moved in the same direction via 54, the extruding pin 56 and the gate pin 57 are moved in the same direction, and the cast product in the cavity 36 is extruded to the outside of the cavity 36. Then, the extruded cast product is conveyed to the trimming device 4a, and burrs, overflows, and the like are removed. After that, the movable side mold 7 is moved again to perform mold clamping, and the above operation is repeated.

As described above, in the small casting machine 1, when the insert piece 10 is exchanged, the first and second liners 13 are removed, and the fourth operation handle 4 is operated to insert the insert piece supported by the support rod 26. 10 can be discharged between the two molds 6 and 7, and if the replaced insert 10 is placed on the support rod 26 and the mold is clamped, a predetermined mounting recess of both molds 6 and 7 11,
Automatically accommodated within 32. Therefore, the replacement work of the insert piece 10 can be performed extremely easily. If the first and second liners 13 and 33 after replacement are inserted into the respective mother molds 6 and 7 to a predetermined position, the stopper 17 automatically operates to reliably prevent the stopper 17 from coming off.

On the other hand, since the cam 25 provided on the fixed-side mother die 6 is formed in a mortar shape, the multidirectional slide block 39 is
It can be set at any position on the 25. Therefore, by exchanging and using various insert pieces in which the positions of the sliding grooves 38 supporting the multidirectional slide block 39 are different,
Various types of key rotors in which the relative position of the slide piece hole to the lock plate hole is different can be cast without changing the mother dies 6 and 7. Then, at the time of casting, since the guide pin 50 is passed through the standard slide block 44, it is confirmed that the standard slide block 44 has been moved to a predetermined position based on the fact that the guide pin 50 can pass through. At the same time, the guide pin 50 can reliably prevent the standard slide block 44 from retreating due to the pressure of pouring the molten metal into the cavity 36 to improve the casting accuracy.

As described above in detail, according to the present invention, the relative position of the first slide block with respect to the second slide block can be changed only by replacing the insert piece or the first slide block without replacing the mother die. It has the excellent effect of casting various kinds of castings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view showing a die apparatus of a small casting machine embodying the present invention, FIG. 2 is a side view of a fixed side mold, and FIG. 3 is a movable side mold. And a side view of the insert piece, FIG. 4 is a plan view of the small casting machine, FIGS. 5 and 6 are cross-sectional views showing the operation of the stopper, FIG. 7 is a cross-sectional view of the mold device, and FIG. 8 is a direct connection. FIG. 9 is a vertical sectional view showing the jig, FIG. 9 is a front view of the direct connection jig, and FIGS. 6: Fixed side mold, 7: Movable side mold, 10: Inserted piece, 25
...... Cam, 36 ...... Cavity, 39 ...... Multi-directional slide block as first slide block, 42 ...... Cam groove, 43 ...... First horizontal arrow, 44 ...... Standard slide as second slide block Block, 45 ... The second Yokoya.

Claims (1)

[Claims] 1. A first slide block and a second slide block for supporting a core in a cavity in the insert piece, the insert piece being disposed between the fixed side mold die and the movable side mold die. In the small casting machine, the insert piece (10) is provided so as to be able to move integrally with the movable mold (7) and detachably from the movable mold (7), and the movable mother of the fixed mold (6) is provided. On the side facing the mold (7), there is provided a cam (25) in the shape of a pot that surrounds the insert piece (10) during mold clamping and expands in diameter toward the movable side mold (7). The first slide block (39) is supported by the insertion piece (10) so as to be movable in the radial direction of the insertion piece (10), and the cam (25) is provided on the first slide block (39).
A small casting machine characterized in that a cam groove (42) for engaging with is provided so that the first slide block (39) can be moved in the radial direction of the insert piece (10) with mold clamping and mold opening. .