JPH0214828Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a mold making device that allows horizontally split molds to be easily and quickly replaced.

(Prior Art) For example, in mold making machines for the cold box method and mold making machines for the shell mold method, it has become necessary in recent years to frequently replace molds in order to produce a wide variety of cast products. However, among the above-mentioned mold making machines, the mold making machines equipped with a horizontally split mold opening/closing mechanism are equipped with various devices above the mold installation position, so the molds can be directly suspended and the molds removed. It is not possible to carry the mold into or out of the mold mounting position, so conventionally the mold has been replaced by carrying a trolley into the machine and pulling the mold onto the trolley. Therefore, mold replacement is extremely troublesome and requires many workers and time.

(Purpose of the invention) This invention was made in view of the above circumstances.
To provide a mold making device that allows one operator to reliably and quickly replace molds.

(Structure of the invention) Hereinafter, the structure of the invention will be described in detail based on drawings of embodiments. Reference numeral 1 denotes a base, and three pillars 2, 2, and 3 are arranged and erected at the front left and right sides of the base 1 and at the rear center position, respectively, so as to form a triangle on a plane. A ceiling frame 4 is installed between the upper ends of , 2 and 3. Further, an upwardly facing cylinder 5 is installed in the center of the base 1, and an elevating table 6 is attached to the upper end of a piston rod 5a of the cylinder 5. Furthermore, a bridging member 7 extending in the left-right direction is installed at the upper stage of the pillars 2, 2. Note that a transition member (not shown) similar to this transition member 7 is also provided at the rear, hanging from the ceiling frame 4.

Furthermore, a hooking means 9 is attached to the lower surface of each passing member 7, and is attached to the upper mold 8 and is removably attached to the upper die 8. Two brackets 10, 10 with a bifurcated structure fixed to the lower surface at a required interval, and an upper mold 8.
The bracket 10,
10, a horizontal cylinder 12 which is attached to the lower surface of the transfer member 7 via a bracket 30 and causes the support pins 11, 11 to reciprocate horizontally, and a piston rod of the cylinder 12 with the support pin 12 fitted thereinto. 11, and a connecting member 13 that connects the members 11, 11. Also, ceiling frame 4
Stoppers 14, 14 for preventing the upper mold 8 from rising are attached to the lower surface of the mold 8 via a support member 15. Further, as shown in FIG. 3, a rotary table 16 equipped with a rotary drive means (not shown) is attached to the support column 3 so as to be able to rotate intermittently horizontally by 180 degrees.
Two pairs of guide bars 17, 17 are provided on both left and right sides of the rotary table 16, and are arranged vertically and extend in the front-rear direction (in FIG. 1, extend in the left-right direction).
At the front and back positions of each pair of guide bars 17,
Two movable cylinders 18, 18 are slidably mounted around the cylinder. Furthermore, an arm 19 that extends in a direction perpendicular to the guide bar 17 and has a rail structure on its upper surface is fixed to one outer end of each movable cylinder 18 at its base. In addition, 2 rings mounted on the same guide bar 17
A horizontally oriented cylinder 20 is installed between the moving cylinders 18, 18.
The width of the arms 19, 19 is opened and closed by the expansion and contraction operation of the arms 19, 19. Further, a stopper 22 for positioning the lower mold 21 placed on the arms 19, 19 is fixed to a position near the base of the arms 19, 19, and the arm 1 is attached to the hakama 21a of the lower mold 21.
Four grooved rollers 23, 2 that can be engaged with 9, 19
3 is pivoted. In addition, 24 is a sand hopper, 25 is an air tank, 26 is a blow head,
27 is a mold extrusion device, 28 is a compressed air supply and discharge valve,
29 is a mold transfer rail.

(Operation of the device) Next, the operation of the device configured as described above will be explained. After the upper and lower molds 8, 21 to be attached to the mold making machine are transferred via the rail 29 onto the arms 19, 19 located outside the machine, the arms 19,
Stoppers 31, 31 are manually attached to arms 19, and upper and lower molds 8, 21 are fixed to arms 19, 19. Next, the cylinders 12, 12 of the latching means 9, 9 are extended in advance to release the support pins 11, 1.
1 is pulled out from the brackets 10, 10, a drive device (not shown) is driven to horizontally rotate the rotary table 16, arms 19, 19, etc. by 180 degrees, and the upper and lower molds 8, 21 to be attached are moved to the lifting table. Move it to the position directly above No.6. Next, the piston rod 5a of the cylinder 5 is extended to raise the lifting table 6, thereby placing the upper and lower molds 8, 21 on the lifting table 6.
Separated from above the arms 19, 19, the upper mold 8
The hanging parts 8a, 8a of the mold are inserted into the brackets 10, 10, and then the upper surface of the upper mold 8 is brought into contact with the stopper 1.
4 and 14, their ascent is stopped.
Next, the cylinders 12, 12 are contracted to allow the support pins 11, 11 to pass through the brackets 10, 10 and the hangers 8a, 8a, and then the lower mold 21 is appropriately fixed to the lifting table 6, and the mold is placed in the machine. The cylinder 20 is extended to widen the width of the arms 19, 19 located inside the machine, and then the piston rod 5a of the cylinder 5 is contracted to lower the lower mold 21 together with the lifting table 6. As a result, the upper and lower molds 8 and 21 are installed.

In addition, when removing the upper and lower molds 8, 21 from the mold making machine, the above operation may be performed in reverse. Thus, the upper and lower molds 8, 21 can be replaced.

In the above embodiment, two pairs of arms 19, 19 are provided, but it goes without saying that any number of pairs may be used as long as there are two or more pairs.

(Effects of the invention) As is clear from the above explanation, the present invention enables the arms 19, 19 extending radially to be rotated via the rotary table 16 on the support 3 which is erected at the central position on one side of the base 1. Attach it to the arm 19,1
Since the upper and lower molds 8 and 21 are configured to be able to enter and exit between the lifting table 6 and the latching means 9, the upper and lower molds 8 and 21 are
9 and carried in and out between the elevating table 6 and the latching means 9, this provides excellent practical effects such as facilitating and speedy exchange of the upper and lower molds 8, 21.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a right side view, and Fig. 3 is a view from A to A in Fig. 2.
It is an enlarged view of the arrow. 3: Post, 6: Lifting table, 8: Upper mold,
9: Latching means, 19: Arm, 21: Lower mold.

Claims (1)

[Scope of utility model registration request] Three pillars 2, 2, 3 supporting the ceiling frame 4 are arranged and erected on the base 1 so as to form a triangular planar shape, and upper and lower molds 8, 21 are installed in the center of the base 1.
A lifting table 6 is provided, and a hanging means 9 for removably locking the upper mold 8 is provided above the lifting table 6 at a required interval, and the three pillars 2, 2, A rotary table 16 is pivotally supported on one of the pillars 3, and a pair of arms 19, 19 are attached radially to the rotary table 16, and the arms 19, 19 are latched to the lifting table 6. It is possible to enter and exit between the means 9 and the two arms 19, 19 forming a pair are configured to be openable and closable at an interval that allows the lower mold 21 to be placed and an interval that allows the lower mold 21 to pass through. Mold making equipment.