JPH03281038A - Method for conveying mold in vertical type flaskless casting equipment - Google Patents

Abstract

PURPOSE:To prevent opening of molds caused by pouring molten metal and to improve producing efficiency of castings by arranging side clamps for fixing and side clamps for shifting for holding the mold, which are mutually faced and advance/retreated in the right angle direction to the mold conveying direc tion, at upper part of both sides of a conveying table. CONSTITUTION:At the time of stopping the mold 5 on fixed rails 7 of conveying table 6 in order to pour the molten metal, the side clamps 20 for fixing having projections 22 at faced faces are protruded toward inside to hold the mold 5 from both sides. At this time the side clamps for shifting are separated from the mold 5. At the time of conveying the mold 5, the side clamps for fixing are shifted to outside and separated from the mold 5 and shifting rails 8 are ascended. At the same time, the side clamps 21 for shifting are ascended, too and the mold 5 is held from both sides and the shifting rails 8 are advanced. Therefore, the line of the molds 5 before and after pouring the molten metal is always firmly held, and all molds 5 from the most front end to the most back end can be poured with the molten metal and the die for which pouring the molten metal is impossible due to the opening of molds does not exist.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for transporting molds in vertical frameless casting equipment.

[Conventional technology]

As shown in Fig. 4, the main parts of the vertical frameless casting equipment are shown schematically in Figure 4. and the opposite side), forming one side of the mold cavity 5a, and molding a frameless mold 5 with a core therein if necessary,
The molds are sequentially sent to a mold matching zone 2, and in this mold matching zone 2, the rear surface of the mold 5 sent out first and the front surface of the mold 5 sent out later are brought into close contact to form a mold cavity 5a that becomes a cast product. Let's do it.

Next, in the molten metal pouring zone 3, molten metal is poured into the mold cavities 5a of a large number of molds 5 that have been conveyed in close contact with each other by a conveying mechanism to be described later, through a molten pouring device (not shown). .

The mold 5 after pouring is further sent to a cooling zone 4, cooled on a belt conveyor 4a, and sent to a subsequent process such as a mold release device (not shown).

As described above, according to the vertical frameless casting equipment, the mold 5 is divided vertically and brought into close contact with each other, mold cavities 5a are sequentially and continuously formed on both the front and rear surfaces, and the mold cavities 5a are poured with metal to produce the cast product. Compared to casting using conventional horizontally split molds, castings can be manufactured more efficiently with less equipment space, and since no casting flasks are required, cleaning and transporting the flasks are easier. This can greatly reduce the amount of effort required to handle such items.

For this reason, this equipment has become increasingly popular in recent years.

Therefore, in order to convey the mold 5 between the mold matching zone 2 and the pouring zone 3 in the vertical frameless casting equipment, the fifth
As shown in the figure, a conveying table 6 is formed by arranging every other fixed rail 7 and movable rail 8 in the vertical direction (the direction in which the mold 5 is conveyed), and when the movable rail 8 is stationary, both rails are Make sure the top surfaces of the 7°8 are on the same plane. The moving rail 8 moves up and down at this position, and moves forward and backward at the up and down position to sequentially transport the molds (
For example, see Equity No. 50-39609).

That is, when the rod 10 is pushed out by the air cylinder 9 shown in FIG. 4 and the eccentric shaft 12 is slightly raised via the arm 1), the mold 5 rides on the moving rail 8 and rises.
It rises from the upper surface of the fixed rail 7. Next, when the rod 14 is pushed out by the air cylinder I3, the support member 15 supporting the moving rail 8 rolls on the roller 16 fitted to the eccentric shaft 12 and moves forward a predetermined distance, thereby moving the mold 5 forward together with the moving rail 8. .

Once the mold 5 has advanced a predetermined distance, the air cylinder 9
retracts the rod 10 and lowers the eccentric shaft 12 via the arm 1) to its original position or below. As the eccentric shaft I2 descends, the movable rail 8 also descends, and the mold 5 rides on the upper surface of the fixed rail 7 and stops.

Note that the mold 5 manufactured in the molding zone 1 is sent out so that it is matched with the mold 5 previously molded and placed on the conveyance table 6 in the mold matching zone 2 with an appropriate degree of closeness. The forward distance of the moving rail 8, that is, the distance that the mold 5 is conveyed at one time, corresponds to the distance that the mold 5 is sent out from the molding zone 1.

Molten metal is poured in the pouring zone 3 into the molds 5 which have been matched with appropriate adhesion as described above and are successively sent to the pouring zone 3 in close contact with each other.

[Problem to be Solved by the Invention] As described above, each mold 5 is continuously conveyed with its front and rear surfaces in close contact with each other, and is poured in a stationary state in the pouring zone 3.

During pouring, the mold 5 is held stationary from the horizontal direction by a pressing plate 18 via a pressing mechanism 17 as shown in FIG. 5, but is held in the vertical direction where the molds 5 are in close contact The force that tends to open the molds 5 due to pouring is counteracted by the frictional force between the bottom surfaces of the molds 5 arranged in front and behind and the top surface of the conveyance table 6.

Therefore, it is necessary that the number of molds 5 that generate the above-mentioned frictional force be lined up in front and behind the mold cavity 5a in the vertical direction into which the mold cavity 5a is to be poured.

Therefore, after the start of molding, the metal can only be poured into the molds 5 after the above number of molds 5 are lined up, and when the molding is finished, the metal can only be poured into the molds 5 before the above number of molds 5 are lined up. If it opens, it will cause hot water leakage). In particular, if the last few molds are left on the conveyor table 6 until the next operation, moisture in the molds will cause the rails and molds to stick together, causing problems when starting work again or causing rust on the rails. Because it may cause
After completing the work, it is necessary to completely remove it from the transport table 6.

As a result, the mold cannot be poured at the start or end of molding, resulting in wasted molds that require time and effort to remove, which impedes the production efficiency of castings.

The object of the present invention is to eliminate molds that cannot be poured into, and to improve the production efficiency of castings.

[Means to solve the problem]

The present invention was made as a result of various studies to achieve the above object, and consists of forming a mold transport table by alternately arranging fixed rails and movable rails at appropriate intervals, and forming a mold conveyance table. In a method for transporting molds in a vertical frameless casting facility in which molds arranged in close contact with each other are transported on the transport table by vertical and reciprocating movements, Fixing side clamps with protrusions formed on opposing surfaces that go in and out in a direction perpendicular to the direction of conveyance of the mold to clamp the mold are fixedly provided, and below these side clamps are placed facing each other and operate in the same manner as the above-mentioned moving rails. A movable side clamp having protrusions formed on opposing surfaces is provided, which moves in and out in the perpendicular direction to clamp the mold, and when the mold is stopped, the mold is clamped by the fixed side clamp, When transporting the mold, the clamping by the fixing side clamps is released, and the mold is transported by clamping by the moving side clamps.

[For production]

When the pouring special mold is stopped on at least the fixed rail of the transport table, the mold is clamped by fixed side clamps, and the same vertical and reciprocating movements as the moving rail are carried out when transporting the mold. Clamp the mold with the moving side clamps. Moreover, since the protrusions formed on the opposing surfaces of the fixing and moving side clamps are pierced and clamped into the mold, the mold can be held securely.

Therefore, it is possible to pour metal into all the molds while preventing the mold from opening, and it is possible to improve the production efficiency of castings.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a front view showing the main parts, FIG. 2 is an explanatory view of the operating state, and FIG. 3 is a sectional view showing an example of the structure of the side clamp.

As shown in Figure 1.2, fixed rail 7 and moving rail 8
Fixing side clamps 20 are provided facing each other above both sides of the transport table 6, and moving side clamps 21 are provided below thereof facing each other. The stationary side clamp 20 and the movable side clamp 21 each have a pointed protrusion 22 formed on each opposing surface, and are connected to each other via a drive mechanism (both not shown) attached to the machine frame, for example. It moves in and out in the lateral direction perpendicular to the conveyance direction (N?! direction) of the mold. The fixed side clamp 20 moves in and out of the fixed position as described above, and the movable side clamp 21 moves in and out of the moving rail 8 in addition to the above-mentioned movement.
Performs the same movements as the vertical movement and reciprocating movement of . That is, although not shown, the movable side clamp 21 is attached to a machine frame that is connected to the movable rail 8 and operates integrally with the movable rail 8.

The mold 5 is placed on the fixed rail 7 of the transfer table 6 for pouring etc.
When it is stopped, the fixing side clamps 20 having protrusions 22 on the opposing surfaces protrude inward to hold the mold 5 on both sides in the lateral direction, as shown in FIG. 2 (8). firmly clamp the mold 5 with enough force to prevent it from breaking. At this time, the moving side clamp 21 is separated from the mold 5.

When transporting the mold, as shown in FIG.
is removed from the mold 5, and then the moving rail 8 is raised. As the movable rail 8 rises, the mold 5 moves to the fixed rail 7.
It separates from the rail and rises on the moving rail 8, but at the same time, the moving side clamp 2 also rises. At this position, the moving side clamp 21 is activated and protrudes inward,
The mold 5 is firmly clamped from both sides in the lateral direction with enough force to prevent the mold 5 from breaking. Note that the moving rail 8 may be raised after the mold 5 is clamped by the moving side clamps 21.

Next, the movable rail 8 is moved forward with the mold 5 being clamped by the movable side clamps 21, and when the movable rail 8 is lowered at the stopped position and the mold 5 is on the fixed rail 7, the movable side clamps 21 to the outside, the protrusion 22 is removed from the mold 5, and the fixing side clamp 2o is operated to bring it into the state shown in FIG. 2 (al).

As described above, the stationary side clamps 20 having the projections 22 on the opposing surfaces firmly clamp the stopped mold 5, and the movable side clamps 21 firmly clamp the mold 5 being transported. The rows of molds 5 before and after pouring the molten metal are firmly clamped at all times, so that the molds 5 do not open due to pouring the molten metal and cause molten metal to leak.

Therefore, it is possible to pour metal up to the mold 5 near the leading end or the rear end, and it is possible to eliminate unnecessary molds that cannot be poured.

The fixed or movable side clamp 20.21 has a third
It can be structured as shown in the figure.

That is, it has a box shape with its lower part open, and has a pressing plate 24 inside which has a protrusion 22 and which moves in and out in the left and right directions in the figure by means of an air cylinder 25, and side clamps 20.21.
A through hole 23 is provided at the same position as the protrusion 22 on the opposing surface. Note that 26 is a guide bar.

When clamping the mold 5 (not shown), first clamp it with the fixed or movable side clamps 20 and 21 as described above, and then protrude the pressing plate 24 and insert the protrusion 22 into the mold 5 through the through hole 23. Pierce and hold firmly. By doing so, it is possible to prevent local mold ringing when removing the protrusion 22.

〔Effect of the invention〕

As described above, according to the present invention, the production efficiency of castings can be improved by eliminating molds that cannot be poured.

[Brief explanation of drawings]

FIG. 1 is a front view of the main parts showing one embodiment of the present invention, and FIG.
Figures (al, (bl) are explanatory diagrams of the operating state, Figure 3 is a sectional view showing an example of the structure of the side clamp, Figure 4 is a front view of the main parts showing an example of vertical frameless casting equipment, Figure 5 is a sectional view taken along line A-A in Fig. 4. 5: Mold, 6: Transfer table, 7: Fixed rail, 8: Moving rail, 20: Fixed side clamp, 21: Moving side clamp, 22: Projection. Kayazu number diagram

Claims (1)

[Claims] (1) Fixed rails and movable rails are arranged alternately at appropriate intervals to form a mold conveyance table, and the movable rails are moved up and down and reciprocated so that they are brought into close contact with each other on the conveyance table. In a method for transporting molds in vertical frameless casting equipment that transports molds arranged in
Clamping the mold above both sides of the conveyance table, facing each other and moving in and out in a direction perpendicular to the conveyance direction of the mold;
Fixing side clamps having protrusions formed on opposing surfaces are fixedly provided, and below the fixing side clamps, facing each other, the movable rails move in the same manner as the movable rails, and move in and out in the perpendicular direction to clamp the mold; A moving side clamp that forms a protrusion on the opposing surface is provided, and when the mold is stopped, the mold is clamped by the fixing side clamp, and when the mold is transported, the clamping by the fixing side clamp is released and the mold is moved. A method for transporting molds in vertical frameless casting equipment, characterized in that the molds are transported while being held by side clamps.