JPH0231248Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a weir folding device used in casting operations.

When casting work is carried out in a consistent assembly line, it is necessary to perform each process in a short time and efficiently.

The present invention relates to a device used in the weir folding process, particularly in the folding process.

(Prior Art) Various types of weir folding devices for casting operations have been proposed in the past (Japanese Patent Application Laid-Open No. 52-156730, JP-A No. 55-64960, and JP-A No. 55-92265).
There is no suitable device for folding a large number of weirs of castings in a plurality of molds at once by effectively utilizing a relatively narrow limited space. Moreover, the plurality of pressing forces acting simultaneously on the plurality of weirs of each of the above-mentioned castings are made to act in opposite directions to cancel out the forces, so as to prevent the generation of unbalanced forces that occur when the weir folds. There is no known technology to do so.

(Problems to be Solved by the Invention) An object of the present invention is to obtain a device that solves the problems of the prior art.

[Structure of the idea]

(Means for solving the problems) The weir folding device of the present invention consists of a combination of the following means for solving the above problems.

A plate for mounting and fixing a plurality of molds so that they are aligned in a line, means for raising and lowering the plate, means for fixing and supporting the plate when it is raised, casting weirs in the plurality of molds being aligned in a line. a plurality of pressing members that are combined with each other so as to simultaneously press and crush the weirs in a straight line upward direction, and an outer weir in which the plurality of weirs in each of the castings are arranged in a straight line; Pressure applying means for pressing the weir from the outside and the inside weir from the inside in opposite directions.

(Function) When multiple molds are lined up in a line on a plate, and the casting weirs inside the molds are also lined up in a line,
These weirs are crushed all at once, and since the direction of the pressing force applied by the pressing member to the plurality of weirs of each casting is reversed, the pressing forces cancel each other out, and the weir folding operation is carried out smoothly.

Furthermore, the pressing force applying means, which is composed of an operating cylinder, a piston rod, and a connecting member or a plate member, is combined with a plurality of pressing members, thereby making it possible to perform the simultaneous weir folding operation with a simple structure.

(Example) Before explaining the present invention, a general explanation of the casting operation will be given. FIG. 1 schematically shows the layout of the casting line. The casting line is formed into a line with four sides, rectangular plates 1 with an aspect ratio of 2:1 are lined up on the line, and two molds 2 are placed on each plate. It is arranged so that it can be moved circularly along the line in the direction of arrow A without changing its direction. On the line, ~ indicates each casting process, where is heating or cooling of the mold, is inserting the core, is pouring, is reversing, is folding the sprue, is lifting and folding related to this invention,
is the cutting die process, and is the process of transferring the product.

A fixed rail 4 is provided for supporting the plate 1, and a movable rail 3 is provided for moving the plate 1. Since the time required for each casting process is different, the manner in which the plate 1 moves must be made different between the left and right sides and the top and bottom sides of the four-sided casting line in FIG. Therefore, feeding devices No. 1 to No. 4 are separately provided at the four corners. 5 is a feed roller.

Next, an embodiment of the present invention will be explained with reference to FIGS. 2 and 3.

In the embodiment, the bulges 12 (located at two locations per casting) formed on the upper surface of the casting (product) 11 in the mold 2 are crushed by being squeezed from the outside to the inside by the pressing pieces 13. It is a device for removing.

A vertical lifting device for the plate 1 provided inside the base frame 14 includes a receiving member 16 having a convex portion 15.
and an elevating plate 17 to which the elevating plate 17 is fixed. When the elevating plate 17 is raised by the operation of the operating cylinder 18, the protruding portion 15 fits into the protruding portion provided on the plate 1 and is positioned. 10 is a toggle joint mechanism for raising and lowering the plate, and is constructed as follows. Brackets 19 are provided at four locations on the lower part of the elevating plate 17, and two brackets 19 are provided at each location in parallel to each other. And each bracket 19 has a rotating plate 2.
0a or 20b (respectively located in the front and rear with respect to the advancing direction C of the plate 1) are pivotally supported. Also, a rotating plate 21a or 21b (respectively plate 1
(located in the front and back with respect to the forward direction C) are pivotally supported.

Each of the two sets of rotating plates 20b and 21b located rearward with respect to the forward direction B of the plate 1 is connected by two locking pins 23b. On the other hand, two sets of rotating plates 20a located forward with respect to the forward direction B of the plate 1
The combination of the rotating plate 21a and the rotary plate 21a are connected by one common operating connecting rod 23a.

The operating connecting rod 23a and the locking pin 23b are connected to each other by a connecting plate 22. Further, a piston rod 26 of the actuation cylinder 18, which is pivotally supported by a bracket 25 fixed to the base frame 14, is rotatably connected to the central portion of the actuation connecting rod 23a. Reference numeral 28 is a guide roll of a device for raising and lowering the plate 1, and reference numeral 27 is a stopper that can adjust the lowering position. 31 is a guide roll which can prevent the plate 1 from moving from side to side.

Next, referring to FIGS. 2 and 4, a description will be given of the pressing piece actuating mechanism 30 provided above the mold 2 for folding the ridge.

Slide on the eight tie bars 33 fixed to the bracket 32 attached to the base frame 14 (the operating mechanism in Fig. 4 has four tie bars. There is one more set of this operating mechanism, so there are eight tie bars). There are eight actuating plate members that are movably inserted (four in Fig.
(Although 8 pieces are shown, there is one more set of the operating mechanism shown in Fig. 4, so there are 8 pieces). Two actuating plate members make up a set of four. Of these actuating plate members, the right outer member 34a and the left inner member 34b are fixed together by a connecting member 35, and the right inner member 36a and the left outer member 36b are fixed together by a plate member 37. However, two more sets are provided, resulting in four sets, which correspond to two plates, or four molds. bracket 38
An actuation cylinder 39 as a pressing drive source fixed to
The piston rods are connected to the back surfaces of the right outer member 34a and the left outer member 36b, respectively. Each of the four sets of actuating plate members has a pressing piece 13 at its lower end.

The actuating plate member and the pressing piece integrally form a pressing member. Further, the above-mentioned actuation cylinder,
The piston rod and the connecting member or plate member form the pressing force applying means.

Next, the operation of the above embodiment will be explained.

Hydraulic pressure is applied to the operating cylinder 18 to move the piston rod 26 forward, and the operating connecting rod 23a and the connecting plate 2 are moved forward.
2. When the elevating plate 17 is raised via the locking pin 23b, the two plates are at the predetermined position C (dashed line in Figure 2).
The guide roller 31 is positioned between the guide rolls 31 and prevented from moving from side to side. As the plate rises, the casting (product) in the mold 2 also rises to a predetermined position D (dashed line in Figure 2).
At this point, the lift 12 enters the movement range of the left and right movement of the pressing piece 13.

Hydraulic pressure is applied to the actuation cylinder 39 to move the right outer member 34a and the left inner member 34b to the left, and the right inner member 36a and the left outer member 36b to the right, intersecting each other to move the tie bar 33 toward the center of the device. The fixed casting (product) is moved by sliding along the
The ridge 12 on the upper surface of is crushed and removed by the pressing piece 13.

Although the embodiment has been described above, the present invention is not limited to this embodiment.

That is, in the embodiment, the plate is raised and lowered by a lifting mechanism using the toggle joint mechanism 10, but the means for raising and lowering the plate is not limited to this structure, and any means that can raise and lower the plate as appropriate may be used.

Further, in the embodiment, the guide roll 31 is used as a means for fixedly supporting the plate when it is raised above the plate, but the structure is not limited to this, and any means that can reliably prevent the plate from moving from side to side may be used.

[Effects of the invention] In the invention, a plurality of molds are placed and fixed in a line. When the weirs of the castings in the plurality of molds are lined up in a line, among the plurality of pressing members that are combined so as to be able to crush those weirs all at once, the outer pressing member also moves inwardly. Since the pressing member on the inside exerts its pressing force in the outward direction, contrary to the above, the "pressing force of weir folding" can be canceled out for each casting.

Moreover, one outer pressing member and the other inner pressing member are connected to one of the opposing pressing drive sources, and the other outer pressing member and one inner pressing member are connected to the other of the pressing driving sources. By connecting the two, it is no longer necessary to install a pressing drive source for each pressing member individually, and the above-mentioned offsetting effect can be achieved by simply providing a simple pressing force applying means that can clamp them all at once.

[Brief explanation of the drawing]

Fig. 1 is a layout diagram of a casting line in which the weir folding device of the present invention is used, Fig. 2 is a front view of one embodiment of the weir folding device of the present invention, and Fig. 3 is a side view of the plate lifting device. FIG. 4 is a partial perspective view of the pressing piece actuating mechanism of one embodiment of the weir folding device of the present invention. DESCRIPTION OF SYMBOLS 1... Plate, 2... Mold, 10... Toggle joint mechanism as means for raising and lowering the plate, 13... Pressing piece as a pressing member, 3
0... Pressing piece actuation mechanism as a means for moving the pressing member, 31... Guide roll as a means for fixedly supporting the plate, 34a... Right outer member as a pressing member, 34b... As a pressing member Left inner member, 35... Connection member as a pressing force applying means, 36... Right inner member as a pressing member,
36b...Left outer member as a pressing member, 37...
. . . Plate member as pressing force applying means, 39 . . . Operating cylinder as pressing force applying means.

Claims (1)

[Scope of utility model registration request] A plate for placing and fixing a plurality of molds in a line, means for raising and lowering the plate, a means for fixing and supporting the plate when raised, casting weirs in the plurality of molds arranged in a line. a plurality of pressing members combined with each other so as to simultaneously press and crush the weirs in a straight line upward direction, and an outer weir in which the plurality of weirs in each of the castings are arranged in a straight line; A weir folding device comprising pressing force applying means for pressing the weir from the outside and the inner weir from the inside in mutually opposite directions.