JPH0229430B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mold clamping tool that tightens molds that are continuously transferred on a roller conveyor, and which is automatically detached from the mold cooling conveyor line. This invention relates to an automatic transfer device for mold fasteners, which automatically transports the metal to a pouring conveyor line arranged in parallel and transfers it onto the mold before pouring the metal.

Conventionally, casting involves molding an upper mold and a lower mold separately, then polymerizing them and pouring the metal through a pouring hole provided on the top surface of the upper mold to form a cast product of the desired shape. The buoyancy of the hot water, the gas pressure, the head difference in pouring the hot water, etc. cause the hot water to leak from the gap between the mating surfaces.
To eliminate burrs, etc., a weight of considerable weight is placed on top of the upper mold, and the upper mold is strongly pressed against the lower mold to prevent melt leakage, burrs, etc. For this reason, a weight transfer device is installed from the mold cooling line to the pouring line. However, the weight of this weight is several hundred kilograms, so it requires a considerable amount of equipment to suspend and transfer it, and also requires a skilled technique to handle it.

The present invention does not use the above-mentioned weight, but a mold clamping tool formed by riveting clamp rods to which receiving claws at both ends of a clamp frame are attached oppositely, strongly clamps the upper and lower molds to prevent hot water. If the mold is made to prevent leakage, burrs, etc., and the mold after pouring is conveyed to the cooling conveyor line and the catch jaws are automatically removed,
A hanger chuck that hangs down from the underside of a running trolley that moves on a machine platform that straddles this cooling line holds and suspends the clamp frame with the clamp rod's legs open, and transports it to the pouring line before pouring. Since the mold clamping tool is transferred onto the mold being transferred to the mold, it is possible to accurately transfer the mold clamping tool with simpler equipment compared to the conventional transfer of a weight, resulting in automation and labor savings. The aim is to dramatically improve casting speed.

To explain this using an example, a machine 3 is provided to straddle the cooling conveyor line 1 and the pouring conveyor line 2, which are installed in parallel, and the tracks 4 and 5 are installed on both sides of the machine 3. A traveling trolley 6 that can freely reciprocate is provided, and an elevating frame 9 is attached to the lower end of an elevating rod 8 of a cylinder 7 protruding from the upper center surface of the traveling trolley 6.
The spring 1 is connected to the lower surface of the lifting frame 9.
The upper ends of hanger chucks 13, 13' are provided with locking pieces 12, 12' at both ends of the elevating frame 9, the lower ends of which are facing inward. The cylinder 1 is mounted between the upper ends of the hanger chucks 13 and 13' on both sides.
4 so that it can be opened and closed freely, and place the mold clamp 1 on the cooling conveyor line 1 in advance.
When the mold 15 with the clamp rods 21 and 21' of No. 6 opened is transferred directly below the traveling carriage 6 on the machine stand 3, the pressure receiving plates 20 and 20' of the mold clamping tool 16 on the mold 15 are moved. The press rods 11, 11' of the elevating frame 9 descend upward to maintain the open state of the clamp rods 21, 21', and at the same time, the hanger chucks 13, 13'
The locking pieces 12, 12' are raised by the operation of the cylinder 14 while holding the both ends of the clamp frames 19, 19', and then the molten metal on the molten metal pouring conveyor line 2 adjacent to the cooling conveyor line 1 is moved up. Mold 1
In the figure, 17 and 17' are guide rods, 18 is a drive motor, 22 and 22' are receiving claws, 23 and 23' are chevron-shaped protrusions, and 24 is a surface plate. be.

The present invention is constructed as described above, in which the mold 15, which is tightened by the mold clamping tool 16 and which is continuously transferred on the cooling conveyor line 1 after pouring, is placed on both sides of the cooling conveyor line Y. The chevron-shaped protrusions 23, 23' are pushed apart by a clamp release roller (not shown) provided at the receiving claws 2,
When the cylinder 22' is removed and transferred directly below the traveling carriage 6 on the machine base 3, the cylinder 7 protruding above the traveling carriage 6 is operated to lower the elevator frame 9, and the cylinder 7 hangs down from the lower surface thereof. Pressing rods 11, 11 are mold clamping tools 1
At the same time, the hanger chuck 1 is pivoted to both ends of the lifting frame 9 while pressing the pressure receiving plates 20, 20' on the clamp rods 21, 21' to maintain the opened state of the clamp rods 21, 21'.
3, 13' are pushed apart by the operation of the cylinder 14 and lowered to the side ends of the clamp frames 19, 19', the cylinder 14 is operated again and the locking pieces 12, 12 of the hanger chucks 13, 13'12' are for locking both ends of the clamp frames 19, 19'. After that, the clamp rod 2 of the mold fastener 16
1, 21', the vertical lift frame 9 with its legs open is the cylinder 7.
At this time, the pressing rods 11, 11 are moved upward by the elastic force of the springs 10, 10.
Since the lifting frame 9 is synchronized so as to rise while pressing the pressure receiving plates 20, 20' of the clamp rod 2
1, 21' rises to the underside of the protruding carriage 6 with its legs spread. The hanger chucks 13, 13' suspend the mold clamp 16 from the cooling conveyor line 1 to the mold 15' before pouring on the pouring conveyor line 2 arranged parallel to the cooling conveyor line 1. The mold clamping tool 16 is changed over the unpoured mold 15' by being suspended upward and operating in the opposite direction to the previous one.

In a foundry where a cooling conveyor line 1 and a pouring conveyor line 2 are installed in parallel, the present invention straddles the cooling conveyor line 1 and pouring conveyor line 2 so that they are perpendicular to each other, so that the mold clamping tool 16 can be changed using a simple device. because there is,
A pressing rod 1 that automatically suspends the fastening tool 16 effectively with a smaller installation area than the conventional one, hangs down from the lower surface of the lifting frame 9, and inserts the springs 10, 10.
1 and 11 operate in synchronization with the lifting and lowering of the lifting frame 9 and the opening and closing of the hanger chucks 13 and 13'.
Even if the pressing means of the pressing rods 11, 11 is replaced by another pressing method such as an air cylinder, the same effect as that of the present invention can be obtained, and the mold can be clamped accurately without causing any damage to the mold 15' before pouring. This is an extremely useful invention that replaces the fixture 16 and contributes to automation and labor saving in foundries.

[Brief explanation of drawings]

FIG. 1 is a front view of the present invention, FIG. 2 is a right side view,
FIG. 3 is a perspective view showing the mold clamping state of the mold clamping tool. In the figure, 1... Cooling conveyor line, 2... Molten pouring conveyor line, 3... Machine stand, 4, 5... Machine stand, 6... Traveling truck, 7, 14... Cylinder,
8... Elevating rod, 9... Elevating frame, 10... Spring, 11... Pressing rod, 12... Locking piece, 13...
Hanger chuck, 25...Mold after pouring, 1
5'... Mold before pouring, 16... Mold clamp, 1
9, 19'... Clamp frame, 20, 20'... Pressure receiving plate, 21, 21'... Clamp rod, 22, 22'...
...Receiving claw, 23, 23'...Chevron protrusion.

Claims (1)

[Claims] 1. A machine platform is provided that straddles the parallel cooling conveyor line and pouring conveyor line at right angles to each other, and a running trolley that can freely move back and forth is provided on a track installed on both sides of the machine platform, and the center of the running trolley is installed. An elevating frame is connected to the lower end of the elevating rod of the cylinder that protrudes from the top surface,
Furthermore, a press rod fitted with a spring is suspended from the lower surface of the lifting frame, and the upper end of a hanger chuck, which has locking pieces with the lower ends facing inward, is attached to both ends of the lifting frame. A cylinder is installed between the upper ends of the chuck so that it can be opened and closed freely, and the mold, with the clamp rod of the mold clamping tool opened in advance, is placed on the cooling conveyor line directly below the traveling trolley on the machine stand. When the mold is transferred to the mold, the press rod of the lifting frame descends onto the pressure plate of the mold clamping tool on the mold and maintains the open state of the clamp rod, and at the same time, the locking piece of the hanger chuck prevents the cylinder from operating. grip both ends of the clamp frame and lift it up.
An automatic mold fastener changing device characterized in that the mold clamping tool is then transferred onto the mold before pouring on a pouring conveyor line adjacent to the cooling conveyor line.