JPS58125338A - Automatic core setting device - Google Patents

Abstract

PURPOSE:To improve service years and working efficiency by providing clamping devices which sandwich cores from both ends, and a core retainer which abuts on the top surface of the cores and making the setting of the respective positions of the cores in casting molds in a uniformly pressurized state possible. CONSTITUTION:A titled device is provided with clamping devices 18, 18' which are suspended on both sides of a lifter 5 of a core conveyor 4 and sandwich a core 3 from both ends, and a device 16 which retains the core 3 at the top end of the core 3. Said device 16 is fitted loosely with plural supporting rods 30 which are slidable upward and downward. Also, a clamping unit 34 is provided in combination therewith engageably and disengageably with and from the rods 30. After the lifter 5 operates, the rods 30 abut on the top surface of the core 3 along said surface, and in this state, the plural units 30 are gripped with the unit 34, and the rods 30 are fitted to the core 3 in the uniformly pressurized state with good accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION The light-opening technology belongs to the technical field of devices that uniformly set cores in casting molds. -The present invention provides a core conveying device which is installed in the middle of a casting process line and moves a splittable core that has been previously installed outside the line with respect to a mold installed in the line. It has a clamp device that is vertically installed on the lid and clamps the core from both ends outside the line, and a core holding device that comes into contact with the top surface of the core at the bottom so that the core can be set in the mold. This invention relates to an automatic core storing device, and in particular, a plurality of support rods are freely slidable up and down on the core holding device so as to follow and abut against the upper surface of the core. A clamp unit that holds a support rod is removably attached to the support rod, and each part of the core that can be divided is set in the mold under uniform pressure. This invention relates to a storage device.

As is well known, cast products are widely used in various industrial products, and among them, there are an extremely large number of products in which a hollow portion is formed using a core.

In addition, the cast product reduces product costs and increases operating efficiency.

Furthermore, they are mass-produced to meet user needs, and for this reason, manufacturing plants are generally equipped with casting process lines.

That is, in the casting process line, the steps of forming the lower mold, inserting the core, clamping the mold, casting, and molding the product are carried out in an assembly line.

As shown in FIG. 1, the core mounting process is carried out by placing a splittable core 3 on a core assembly jig 2 that has been installed in advance on the side of the casting process line 1. The lifter 5 of the conveying device 4 is moved by the hydraulic cylinder 7 via the guide rail 6 installed on the line 1, and then the lift cylinder 8 installed upright on the lifter 5 retreats and the lift arm 9, A plate 10 connected to the lift arm 9. An automatic core storing device 11 associated with the plate 10 is lowered to approach the core 3.

The automatic core storing device 11 is mounted on a lifting cylinder 12 which is interposed in the plate 10. Balance cylinder 13. The core 3 is horizontally separated and positioned by the guide rod 14, and at the same time the holding plate 17 of the core holding device 16 comes close to the upper surface of the core 3, and the clamp cylinders 19 and 19' of the clamping devices 18 and 18' protrude. Both ends of the core 3 are clamped by clamp arms 20 and 20'.

After holding the core 3, the lifting cylinder 12
．． The balance cylinder 13. The guide rod 14 allows the automatic core storing device 1 to maintain horizontal balance.
1 is raised at a slow speed, and the lift cylinder 8 is further lifted up.

The core 3 detached from the core assembly jig 2 in this manner is placed on a surface plate via the lifter 5 on the conveyor 21 of the casting process line 1 as the hydraulic cylinder 7 operates. 22 onto the lower mold 23.

Then, the lift cylinder 8 moves back again and the lower mold 2
3, and then the automatic core storing device 11 moves the lifting cylinder 12°, the balance cylinder 13. The guide rod 14 lowers the core 3 at a very low speed while maintaining horizontal balance, and statically sets the core 3 uniformly in the lower mold 23 via the presser plate 17. During this time, the jig pin of the adjust arm 15 1 engages with the hole 23' of the upper mold 23 and stops the lowering.

Thereafter, the clamp arms 2o and 20' release the clamping of the core 3, and the automatic core storage device 11° and the conveyance device 4 operate in reverse to the above-mentioned operation to transfer a new core to the same new bottom. A mode in which it is set in a mold has been devised and adopted.

Further, as shown in FIG. 2, the core holding device 16 presses a plurality of presses of different shapes onto one shaft 24 using a plate 17.1.
7', 17', and 17'' are attached so that it can be adapted to several types of cores.

RU, the shaft 24 is rotated by the wheel 27 through the gears 25, 26 in accordance with the shape of the core to select the presser plates 17, 17', 1γ, and 17''.

Therefore, the selection of the embossed press plates 1j, 17', 17.1γ' is limited and cannot be used in an ambiguous manner, which limits the shape of the core and limits the design.

To deal with this, it is conceivable to make the emblem presser plate a removable attachment to the shaft 24 and selectively attach the emblem presser plate carried onto the core each time. is the emblem press plate 1 according to the type of the core.
7 all have to be prepared in advance, making work difficult.
The problem was that selection was time-consuming and increased costs.

On the other hand, between the presser plate 17 and the core 3, there is a crest presser plate 1.
In order to prevent scratches, cracks, etc. from occurring in the core 3 due to the interference of the core 3, the core 3 is generally held with a gap. 23, the gaps tend to cause each of the cores 30 to shift, resulting in a set failure.As a result, the product may have dimensional accuracy9 variations in weight,
There was an inconvenience that the number of product defects increased.

The purpose of this invention is to solve the problem of versatility and mold placement accuracy of an automatic core placement device installed vertically on a conveying device based on the above-mentioned prior art. The above-mentioned problems are solved by installing a plurality of supporting frames that can be slid in a copying manner and also installing a lamp unit that can be engaged with and detached from the supporting frames, and not only can one device immediately respond to various types of cores. It is an object of the present invention to provide an excellent automatic core accommodating device capable of accommodating the core in a mold in a stable state.

In accordance with the above-mentioned object, the structure of the present invention is such that when the lifter of the core conveying device is operated, the automatic core holding device having a core clamping device and a core valve device vertically installed on the lifter approaches the core. Then, the plurality of support frames of the core valve device come into contact with the top surface of the core, and then the clamp unit holds the support frames in a state of contact with the top surface of the core, and further, the core clamp device After clamping the core, the core is suspended by the lifter and transported, and when the core is placed in the mold by the lifter at a predetermined position, the support frame applies pressure to the core. The gist of this is to apply it uniformly.

Next, one embodiment of the present invention will be described below with reference to FIG. 1 and the drawings from FIG. 3 onwards.

To explain the structure of this embodiment, reference numeral 11' is an automatic core storage device which constitutes the gist of the invention, and the glue lid 5 is similar to that shown in FIG.
Lifting cylinder 12. which is interposed in a play 110 connected to the lift arm 9 of. Balance cylinder 13. It is installed vertically via a guide rod 14.

Therefore, the lifting cylinder 12 is attached to the core storing device 11'.
．． Clamp devices 18, 18' are provided on both sides of the pass 27 which is connected to the guide rod 14, and have clamp arms 20, 20' at the ends of the clamp cylinders 19 and 19'. A core valve device 16' is provided in the center, and adjustment arms 15 are suspended from the front and rear with jig bins 15' at their tips.

Incidentally, a clamp plate 28.2&' is attached to the clamp arms 20, 20' as an attachment.

Moreover, the core valve device 16' has two parts in the front and rear as shown in FIG.
A support frame 30 as shown in FIG. 6.7 is provided on the frame 29, 29' provided on the pace foot 27, and has an abutment block 31 at the tip and a flange 3 at the base end.
The support frame 30 is provided with a plurality of flange 32, and the seven flange 32 is inserted through the guide shaft 33, so that rotation of the support frame 30 is restricted.

On the other hand, the clamp unit 34 interposed between the frames 29 and 29' has an air spring 37 installed horizontally on a bracket 35 protruding from the pace 27 and connected to a near compressor (not shown) via an air hose 36. A fork block 38 is integrally provided at the tip of the fork block 38, and the fork block 38 is connected to the frame 29.
, 29' are inserted through compression springs 40 into U-shaped blocks 39 attached to the fork blocks 39, and as shown in FIG.
It is possible to withdraw from charging for 0.30.

Incidentally, the support frame 30 is made vertically slidable.
As shown in the figure, it follows the shape of the core 3 and comes into contact with it.

In the above-mentioned configuration, to explain its operation, the above-mentioned cylinder 1,
As in FIG. 2, the hydraulic cylinder 7 is operated to project and the lifter 5 is moved over the core assembly jig 2 and via the guide rail 6.

Next, the lift cylinder 8 provided on the lifter 5 is slid and packed, and the core storage device 11' is brought close to the splittable core 3 set in the core assembly jig 2 from above to a prescribed position. At this distance, a limit switch (not shown) engages the core assembly jig 2 and stops the operation of the lift cylinder 8.

Therefore, the lifting cylinder 1 interposed in the lifter 5
3 and the balance cylinders 13° 13 on both sides thereof are operated to protrude, and the core storing device 11' is lowered at a slow speed onto the core 3 while being guided by the guide rods 14, 14, while maintaining the overall horizontal balance. .

During this time, the jig bin 15' of the adjustment arm 15 is engaged with the hole 2' of the core assembly jig 2, and the core assembly jig 2
The frame 29 of the core valve device is placed on the upper surface of the core 3 while the position of the core holding device 11' is restricted.
Each of the support frames 30, 30... suspended from 29' comes into contact with the core 3, and as shown in FIG. Slide back.

Thereafter, the lower end of the adjustment arm 15 is engaged with the flange of the core assembly jig 2, and the core storage device 11'
stops descending.

Therefore, the clamp cylinders 19, 19' of the core clamp devices 18, 18' are protruded, and both ends of the core 3 are clamped by the clamp plates 28, 28' attached to the clamp arms 20, 20'. As shown in Figure 9, compressed air from a near compressor (not shown) is supplied to the air spring 37 of the clamp unit 34 through the air hose 36.
The fork block 38 is made to protrude against the compression spring 40, and the support frames 30, 30, .
Regulates the vertical slide of...

The core 3 held in this manner is moved by the lifter 12. Balance cylinder 13. The reverse operation of the IJ aft cylinder 8 lifts it up, and the hydraulic cylinder 7 slides back to move Kfl above the upper die 23 of the casting process line 1 as in FIG. 1 described above.

So again, the lift cylinder 8. The lifting cylinder 12
．． The balance cylinder 13 is operated, the jig bin 15' of the adjusting arm 15 is engaged with the hole 23' of the lower mold 23, and the core 3 is moved into the lower mold 23 at a slow speed while maintaining horizontal balance. Set to .

Meanwhile, the core 3 is clamped at both ends by the clamping devices 18, 1.
8' and each of the upper surfaces is the support frame 3.
0.30..., pressure is applied uniformly and the mold is placed.

Then, the adjusting arm 15 engages with the flange of the lower die 23 to stop the lowering of the core accommodating device 11', thereby completing the die accommodating operation.

Then, the clamp cylinders 19, 19' are slid back to separate the clamp plates 28, 28' from the core 3tJ'-, and from the unclamped state of the core 3, the lift cylinder 12. The balance cylinder 13. The above-mentioned lift cylinder 8 is used to raise the above-mentioned core storage device 11', and the transfer device 4 is then
Then, the core accommodating device 11' is moved onto the core assembly jig 2, and a new core in the core assembly jig 2 is clamped.

Further, while the lower mold 23 is moved by the conveyor 21, a new lower mold is conveyed to the position of the conveying device 4.

On the other hand, the clamp unit 34 is connected to the core holding device 1.
1', the supply of air to the air spring 37 is stopped, and the fork block 38 is moved backward by the compression spring and separated from the support frames 30, 30.

Therefore, the support frames 30, 30... are suspended from the L frame 29, 29' by their own weight.

It goes without saying that the embodiments of the present invention are not limited to the above embodiments; for example, one fork block may grip one support frame, or a plurality of support frames may be gripped at the same time. Various aspects can be adopted, such as the following.

As described above, according to the present invention, in an automatic core storage device having core clamping devices on both sides, a support frame that is vertically slidable is attached to a core holding device vertically installed on a lid of a core conveying device. Since a plurality of clamp units are attached to the supporting frame so as to be able to engage and disengage, basically, after operating the lifter, the core clamping device is used to remove the core. When clamping, the plurality of support frames follow and abut the upper surface of the core, and the clamp unit grips the plurality of support frames in that state, so that the core is brought into close contact with the plurality of support frames, Therefore, it can be accurately adapted to a wide variety of cores, eliminates the need for setup for core changes, and has the excellent effect of allowing work to be carried out efficiently and reducing the number of man-hours.

In addition, since the cores are closely attached to a plurality of support frames, when setting the cores in the lower mold, the support frames can prevent the individual cores from varying in size or the operation of the device. Regardless of variations in precision, it is possible to fit the product in a well-balanced manner with a uniform pressing force, which not only allows for the production of products with good dimensional accuracy, but also greatly reduces the defective rate of products, resulting in lower costs. The effect is produced.

Therefore, there is an advantage that the core does not have backlash due to scratches, cracks, etc. when it is placed in the mold, its service life is improved, and stable products can be manufactured repeatedly.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a core conveying device, FIG. 2 is an explanatory diagram in the direction of arrow A in FIG. 4 is an explanatory partial cross-sectional view taken along IV-rV in FIG. 3, FIG. 5 is an explanatory view of the operating state, FIG. 3 is an explanatory cross-sectional view of part C of FIG. 3, FIG. 8 is an explanatory plan view of FIG. 6, and FIG. 9 is an explanatory view of the same operating state. 4... Core transport device, 5... Lifter, is, is'... Core clamp device, 3.
... Core, 16.16'... Core valve device,

Claims (1)

[Claims] In an automatic core storage device that is vertically installed on a lid of a core conveying device and has a core clamp device on both sides and a core holding device for the top surface of the core at the bottom, the core can be slid up and down on the holding device. An automatic core storing device characterized in that a plurality of support rods are freely installed and a clamp unit is attached to the support rods so as to be able to engage with and disengage from the support rods.