JPS6235558Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a mold matching device that performs mold matching of upper and lower molds based on a lower mold in a casting line.

Conventionally, in this type of mold matching device, mold matching has been performed by positioning the upper mold with respect to the lower mold using a guide pin supported by a fluid cylinder so as to be able to move up and down from a cart holding the upper mold. However, in conventional models, the cart is always urged to be in the neutral position by a pair of springs, etc., and the cart is temporarily returned to the neutral position each time mold matching is completed. It's summery.

However, in the above-mentioned casting line, the lower mold is conveyed continuously on the conveyance line and is also continuously carried into the mold matching position, so the positioning of the lower mold is temporarily shifted, for example, to the positive side. When the lower molds are aligned, the following lower molds also tend to shift toward the positive side.
There was a problem in that each time the molds were matched, the molds had to be matched with a large displacement in the same direction.

The present invention was developed by focusing on the above-mentioned synchronized tendency in positioning the lower mold, and the cart that holds the upper mold and performs mold matching with the lower mold is maintained at the previous mold matching position, and the next The object of the present invention is to provide a mold matching device that can perform the next mold matching immediately from the previous mold matching position.

For this reason, in the present invention, a trolley is disposed on the top of a portal frame provided astride the lower mold transport conveyor so as to be movable in the transport direction of the lower mold.
A pair of first fluid cylinders with the same output placed in the front and back direction keep them pressed together with equal force at all times, and during mold matching, the carriage and the upper mold clamped thereon are held together by guide pins for mold matching. A feature of the present invention is that, when the carriage is moved to the mold matching position, the carriage can be maintained at that moving position.

Hereinafter, the present invention will be described in more detail based on illustrated embodiments.

In the drawing, 1 is a lower mold transport conveyor consisting of a series of roller tables, and 2 is a lower frame that is placed on a surface plate 3 and is intermittently conveyed on the lower mold transport conveyor 1. 2 holds a lower mold (not specifically shown) formed in the previous step. In addition, 4,..., 4 brake both side edges of the surface plate 3 on which the lower frame 2 is placed by friction by means of flanges 4a attached coaxially to both end shafts.
These positioning rollers 4, . . . , 4 constitute a mold matching station for the upper and lower molds.

On the other hand, numerals 5 and 5 are a pair of front and rear gate-shaped frames installed astride the lower die conveyor 1, and 6 is a rail 8 installed on a support frame 7 that is passed between the upper parts of the portal frames 5 and 5. The center of the cylindrical portion is supported by support brackets 10, 10 fixed to the widthwise center of both ends of the support frame 7 in the front and rear directions. A pair of first fluid cylinders are used to apply the same pressing force to the truck 6 through the plungers 9a, 9a.
are pressed together in the front and rear directions, without interfering with the movement of the trolley 6,
After the movement, the cart 6 is held at that position.

Further, reference numeral 11 denotes a plurality of rollers 13,..., which roll on guides 12, 12 extending vertically downward from the cart 6.
13 is guided in the vertical direction, and is supported in a vertically movable manner by a second lifting cylinder 14 installed at the center of the trolley 6. Frame 1
A pair of left and right upper frame clamps are hinged to the lower part of the elevating frame 11 to clamp and hold the upper edge flange portion of 6; 17 is a clamp cylinder that opens and closes the clamps 15; the upper frame 16 holds the upper mold inside; is suspended and supported almost vertically above the lower frame 2 when it is clamped and held by the clamp 15.

Furthermore, 18 and 18 are a pair of third cylinders installed on the trolley 6 on both front and rear sides of the second fluid cylinder 14 for lifting and lowering, and 19 and 19 are vertically downwardly and vertically moved by the third cylinders 18 and 18, respectively. It is a long guide pin (frame alignment pin) supported in the direction, and when the upper frame 16 is carried in, it rises and retreats above it, and when the upper frame 16 is suspended and supported by the clamps 15, 15, the upper frame 16 It is inserted into a vertical through hole (not shown) provided in the upper frame 16, and its tip protrudes below the upper frame 16 by a certain amount, and when matching with the lower frame 2, it synchronizes with the lowering of the upper frame 16. Alternatively, the upper frame 16 may be lowered and entered into a positioning hole (not shown) formed in the lower frame 2 to match the through hole of the upper frame 16 prior to the upper frame 16.
The upper frame 16 and the lower frame 2 are aligned by guiding the lowering of the upper frame 16 and the lower frame 2.

Next, the operation of the mold matching device having the above structure will be explained.

Now, as shown in the drawing, the upper frame 16 is suspended and supported by the clamps 15, 15, and the guide pins 19, 1
After holding the lower end of 9 in a state in which it projects a certain amount below the upper frame 16, the lower frame 2 is carried in for positioning. The lower frame 2 is carried in by intermittent driving of a constant stroke extrusion cylinder on the conveyor 1 while the lower frame 2, in which the lower mold has been molded in the previous process, is placed on the surface plate 3, and a positioning station is constructed. The positioning rollers 4, . The positioning accuracy in this case is usually about ±10 mm at most.

After positioning the lower frame 2, the third fluid cylinders 18, 18 for guide pins are operated synchronously, and the tips of the pair of guide pins 19, 19 are fitted into the positioning holes of the lower frame 2. This insertion is done with guide pin 1
The conical tip portions of 9 and 19 are guided by the conical opening at the top of the positioning hole, and the guide pins 19 and
When the carriage 19 is displaced until it becomes coaxial with the positioning hole, the entire carriage 6 is positioned in its front-rear direction.

In this way, when the guide pins 19, 19 are fitted into the positioning holes of the lower frame 2, the upper frame 16 is lowered by the operation of the second cylinder 14 for raising and lowering, and the upper frame 16 is The upper frame 16 is lowered using the pins 19, 19 as guides, and finally the upper frame 16 is brought into alignment with the lower frame 2, thereby performing so-called type matching. After this mold matching, the guide pins 19, 19 are raised to the upper standby position where there is no problem in carrying in the next upper frame 16. The metal is then transported to the next pouring process.

As mentioned above, the next pattern matching starts from the loading of the upper frame 16, but during that time, the cart 6
It is held by a pair of first fluid cylinders 9, 9 at the position determined by the previous mold matching, and the next mold matching is performed based on this position.
Therefore, if the positioning of the lower mold 2 deviates in the same way as the previous positioning deviation, it is only necessary to move the trolley 6 slightly by the difference between the previous and current deviations, so the guide pins 19, 19 Positioning of the upper frame 16 side can be performed easily and quickly.

As described above, the present invention holds the cart that clamps and supports the upper mold with a pair of first fluid cylinders that press against each other with the same force in the front and rear directions.
Since the cart is held at that moving position, the next mold matching can be performed while the cart is held at the previous mold matching position, so the amount of movement of the cart during mold matching is minimized. Therefore, the mold matching using the guide pins can be easily and easily performed, and the effect of smoothly performing mold matching can be obtained.

[Brief explanation of the drawing]

The drawing is a side view of a mold matching device according to the present invention. 1... Conveyor, 2... Lower frame (lower mold),
5, 5...Gate frame, 6...Dolly, 9,9...
...First fluid cylinder, 14...Second fluid cylinder, 15...Clamp, 16...Upper frame (upper mold), 18, 18...Third cylinder, 19, 19
……guide pin.

Claims (1)

[Scope of utility model registration request] A portal frame installed astride the lower mold conveyor that conveys the lower mold at the mold matching position of the upper and lower molds;
A dolly is disposed on the top of the gate-shaped frame so as to be movable along the transport direction of the lower mold, and a pair of first fluid cylinders and a second fluid cylinder push the dolly against each other with the same output from the front and back, and the dolly can be raised and lowered from the dolly. A hold mechanism for holding the upper mold is supported by the upper mold, and a guide pin for mold matching is supported so as to be able to rise and lower by a third fluid cylinder installed vertically on the trolley. A mold matching device characterized in that the carriage is held in the same position at the time of performing the above by a pair of first fluid cylinders.