JPS58125340A - Changing method of pattern in molding machine for casting mold - Google Patents

Abstract

PURPOSE:To reduce a changing time and to make the job safe by providing devices for clamping top runner patterns newly, and making the top runner patterns and the patterns for top molds mounted on a jolting table exchangeable respectively with new patterns. CONSTITUTION:A titled changing method consisting of a stage for moving an old pattern 22 for top mold beforehand upward together with a jolting table 6, dislodging an old top runner pattern 10 fixed to a squeezing head 8 with clamping devices, supporting the same with the sprue bar 23 or supporting pins of the patterns 22, and moving the same down to the home position, a stage for carrying a new pattern 22' for top mold and a new top runner pattern 10' to the exchanging positions of a charging conveyor 25, a stage for transferring said old patterns 10, 22 with the table 6 on a discharging conveyor 26, and a stage for fixing the new pattern 10' with the clamping devices to the head 8 then moving the new pattern 22' together with the table 6 downward. With said method, the patterns 10', 10, 22', 22 are transferred quickly and safely from the conveyor 25 provided on one side with the table 6 in-between to the conveyor 26 on the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for changing a model in a mold making machine, and more specifically, the present invention relates to a method for changing a model in a mold making machine, and more specifically, a method for replacing a model in a mold making machine. Concerning a method for replacing each clay bath model with a new model.

When producing large molds such as cylinder blocks for vehicle engines, or when manufacturing multiple molds in one flask, a clay runner (for each sprue) is placed above the upper mould. It is common to melt a shape, shape or cross-shaped groove for distributing the molten metal, and a squeeze device is usually used to form the clay channel model to form this upper groove when making a mold. attached to the squeeze head. Traditionally, when the upper model of the Tsuchiyudo model is replaced with a new one, it is replaced with a model corresponding to the new upper model. Conventionally, the replacement of the upper model was automated, but the replacement of the upper runner model was done manually, which meant that the molding process took a long time to stop when the model was replaced, and this caused production problems. This is one of the reasons for the reduction in the rate of compression, and since the tsuchiyudo maki-sari itself has a considerable weight, it is difficult to attach and detach it from the squeeze head under poor working conditions. is extremely troublesome and expensive.

In view of the above-mentioned conventional problems, it is an object of the present invention to create a model for mold making IaIlc that can mechanically and rationally exchange two types of models: the 411 mountain for the upper mold and the Tsuchiyudo SR type. The purpose is to provide an exchange method.

Hereinafter, the #a type molding machine, which will specifically examine the present invention based on an exemplary embodiment, will be described as follows.
A bolt device 1 which includes a dopper V, a squeeze cylinder, a lift cylinder, etc., and a rail A/s horizontally suspended on a frame 2 above the device 1
It consists of a time hardening device N4 arranged so as to be movable in the horizontal direction, and a squeeze device 5 which is arranged in parallel with the time hardening device 4 and movable together with the time hardening device 14. 5 is adapted to be repositioned by a fluid pressure cylinder (not shown) between a working position directly above the VW belt device 1 and a standby position located away from the VW belt device 21 according to the manufacturing work process. ing.

On the lower surface of the squeeze plate 9 which is fixed to the squeeze head 8 of the squeeze device M5Ic, for example, an R-shaped clay yudo maki'm10 is fixed via a Kubunpu device 11. They are respectively arranged in two symmetrically formed recesses 9& in both central portions IIl. That is, as shown in FIG. 115 and FIG.
The piston rods 14 of the pistons 15 that slide inside the pistons 2 are each exposed to the outside. A female-shaped engagement member 15 is attached to the tip of each piston rod 14 so as to be allowed to be slightly displaced in the vertical direction. It has a tapered occlusal surface 15&. In addition, 1
Reference numeral 6.17 is a flow path for supplying pressure fluid to the Kufunpu cylinder 12. Further, the female-shaped occlusal member 18 that can engage with the female-shaped occlusal member 15 has two occlusal claws 18a.

18b, one of which is fixed to the squeeze head 8 with a bolt 19alC, and the other of which is fixed to the squeeze head 8 with a bolt 19alC.
It's Kamiyu Domo! 1 bolt on the top side of 110? bIc is constant, and the outer hooks of the occlusal claws 18a, 18b have a taper Ic corresponding to the occlusal surface 15m of the female occlusal member 15.
It is formed. Therefore, when the Kuhump cylinder 12 is operated so that the piston rod 14 protrudes,
Female occlusion member 15 Cam type (DWR occlusion member 18 C1
12 and fix the earthen yudo am10 to the squeeze head 8 in a double tension type.

Note that 20 is a knock pin provided on the lower surface of the squeeze plate 9, and 21 is a knock hole provided in the upper runner model 10.

Also, on the s'wA/)M[1 tape A/6, there are 7 model supports for supporting the upper 111111;
The tape is placed on the model support 7.
16 is secured by a clamping device, not shown, similar to the kuhump device 11 for the clay bath model 1110 described above. Attached to the upper surface of the model support 7 are one or more upper models 22 and an appropriate number of sprue rods 25 that are set corresponding to the shape and size of the models 5I22. Therefore, when replacing the model, the sprue rod 2s functions to support the upper runner model IJ10, as shown in FIG. If this is not possible, use a support pin (-
(not shown) is provided. In addition, the bottom 1 of Kamiyudo Mojo 10
1r- is formed with a slight recess into which the sprue rod 25 or the tip of the support bottle engages.

Next, a model exchange device will be explained with reference to FIGS. 1 and 2. The two wooden feed pars 24 each having four bins 24 & on the top for model transfer extend parallel to each other in the horizontal direction in close proximity to both sides of the Geert mounting M1. , that is, in the longitudinal direction of the feeder 24.
On both sides of 1[iJ! Lobe conveyors 25°26 for loading and type II unloading are provided, and both roller conveyors 25
．． 26ft The conveyance direction thereof is perpendicular to the longitudinal direction of the feed par 24, and the height of the conveyance surface is set to be approximately the same as the upper surface of the ν1 rotat table 6. The two feed pars 24 have a length that at least crosses the disodium belt tape 6 and one lobe conveyor 25, and an appropriate number of feed pars (25, 26#) arranged below the lobe conveyor 25.
In this example, one feedper is supported movably in the longitudinal direction by support lobes 2B with flanges attached to the upper ends of four swing links 27. The J1 movable linter 27 is swingably supported by the frame 2 at appropriate intervals, and their lower ends are connected to each other by an interlocking loft 29, and one end of the interlocking rod 29 is a rift supported by the frame 2. It is connected to the screw F-n rod 51 of the V cylinder 30. That is, the feed par 24 is raised and lowered via the swinging bin 27 by the operation of the lift cylinder 50, and the model transfer bin 24a provided on the feed par 24 is moved by the lobe conveyor in the lowered state. 25 and 26 and the upper surface of the shield tape l&/6, but when rising, the bottle receiving portions 7&/6 protrude above them and are provided on both sides of the a-type support 7. accept. Further, one ends of both feed pars 24 are connected to each other by a connecting member 52, and a screw F-rod 54 of a feed cylinder 55 supported by the frame 2 is attached to this connecting member 52 so as to allow vertical movement of the connecting member 52. They are connected via an oblong.

First, I in the # type shipbuilding la configured as above.
I! The l exchange effect will be explained.

a! As a preparatory work for lI exchange, squeeze device #15 is first displaced directly above squeeze device #11.

On the other hand, on the loading lobe conveyor 25, a model support 7' is prepared in which a new upper model model 22' to be replaced and a sprue rod 25' (and a support bin in some cases) are set. For example, a brick-shaped clay tunnel model 10' corresponding to the above is placed on the sprue rod 25', and
For the Ii type, the exchange position I
It is transported to I (right next to the replacement bolt unit W11).

In such a state u1c, lift the device 1 (lift cylinder and squeeze V cylinder lift operation)
Then, the old model support 7 to be replaced is raised together with the shield tape y6 to a predetermined position, and the mouthpiece rod 25 is brought into contact with the lower surface of the old upper mold model 10 to be replaced. In this case, the model support 7 is constructed by configuring the mouth rod 25 (including the support bottle if it is present) to be expandable and retractable via a spring! 4. A type of support is effective in alleviating the impact at the time of contact as described above. Also, when the belt device moves upward, the empty flask (not shown) placed on the lobe conveyor for conveying the flask is taal.
It is also possible to accurately determine the positional relationship in the height direction between the model support and the squeeze plate by picking it up with the support and bringing the upper edge of the flask into contact with the squeeze plate. In this state, when the clamp V9 holder 12 of the clamping device 11 in the squeeze placement 5 is activated to move the female-type occlusal member 15 backward and detach it from the male-type occlusal member 18, the tatun 1 is placed in the released eye. Since the upper mold 510 is received by the sprue rod 25 of the old model support 7, the shield w1 is moved downward.

The old model support 7 and the top runner mold 10 are lowered together with the root tape A/6.

Thereafter, the feed par 24 is raised via the swing link 27 by the operation of the lift cylinder 50, and the new SL rack support body on the above-mentioned loading loaf conveyor 25 is moved by the model transfer bin 24& of the feed par 24. 7' and N, the old pin-shaped support 7 on the root tag 6, whose clamps have been released in advance, are lifted up via the pin receivers 7a' and 7a, respectively.

Next, the feed par 24 is connected to the feed cylinder 530.
The operation moves the swing link 2 forward by a predetermined amount using the support roller 28 as a guide, and then the swing link 2 moves forward by the operation of the lift cylinder 30.
7 to be underlined, so 41!1 bearing 7 to the new 41
' and the new upper runner model 1 supported through the sprue rod 25'! 10' is the old clay bath model supported on the George table 6, and on the old model support 7 via the sprue rod 25! 1110 is for carrying out! - Transferred onto the conveyor conveyor 26. Thereafter, the feeder 24 is moved back to its original position by the operation of the feed cylinder 55 and waits until the next model exchange. Incidentally, the new @-type support 7' transferred onto the Geerteg A/6 is positioned by the knock pin 6&, and then fixed to the Geerteg A/6 by the 411c1 clamp device.

After that, the device 1 again operates to raise the new model support 7' and the new Kamido model 10' together with the Sierteg tv6, and the new Tsuchiyudo model! El! 10
' is positioned on the lower surface of the squeeze plate 9 of the squeeze device 5 so that the lid pin 20 is engaged with the hole 21 of the new runner model 10'. In such a state, the Kufunde Fljda 12 operates to transfer the female occlusal member 15 to the male occlusal member 1.
8, the new clay yudo model 10' is fixed to the squeeze plate 9. After that, the dildo tape
New II with 6! II! ! The support body 7' is lowered, and the exchange of the old and new models is completed here.

In addition, in the above-mentioned embodiment, the occlusion of the occlusion members 15 and 18 in the clamp device 11 for the upper runner m type.

In other words, both the clamping and releasing of the earthen tunnel model 1o was performed using fluid pressure, but it would be more effective in terms of safety if the clamping action was performed using spring force instead of fluid pressure. be. In addition, in this example, as a device for transferring the model, we used Sugi's device that allows the feedper 22 to perform so-called box motion change, which consists of a combination of vertical movement and forward/backward movement, but this is not necessarily the case. The present invention is not limited to this, and for example, it may be in the form of a zero-shape movement.

In addition, in a mold making machine that has a model support for an upper mold and a lower mold in one molding machine and molds the upper and lower molds at the same time,
The upper runner model according to the present invention can be replaced by using a double-row roller conveyor for model loading and unloading and by increasing the number of support pins for the feeder.

As described in detail above, the present invention makes it possible to mechanically and automatically exchange two types of models: the upper model on the diagonal handle and the upper runner model on the lower surface of the squeeze head. In particular, since the method is to transfer the upper model by using the upper model, the time required for model replacement can be significantly reduced, as well as by the method of transferring the clay model. The process time can be significantly reduced compared to when using a support stand, greatly contributing to improving the production rate of mold making, and also freeing workers from tedious and dangerous work. It is something.

In addition, the Ii & mold replacement of the present invention skillfully utilizes the effects of existing equipment for most of the work, and only requires adding a new clamping device for the clay duct model.
Equipment costs for model replacement can be kept to a low fIA.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view showing a mold making machine and a device for model exchange, and FIG. 2 is a plan view (however, the hardening device and squeeze device are omitted). Figure 6 is a plan view showing the clamping device for the clay runner model, Figure 4 is a front sectional view, and Figure 5 is the upper runner I on the model support.
It is a front view showing a state where the X type is mounted. 1-...Ji1A/To device f 4...Casting sand charging device 5-...Squeeze device 6--Jigatoruto table 7...Model support body 8-
・・To squeeze, 10・・・upper yudo model
11.--Clamp device 22.--Model for upper die
25...Gate rod 24...Feed par
25- Lobe conveyor for carrying in 26 Lobe conveyor for carrying out 50... Lift cylinder 53... Feed cylinder

Claims (1)

[Claims] The mold-making machine is equipped with an incoming conveyor on one side and an outgoing conveyor on the other side of the VWJ&/) table for mold making, and the model is transferred from the incoming conveyor side to the outgoing conveyor side via a tow pull. In a mold making machine equipped with transfer scissors, the upper model on the tape V is
14/) After raising the table to a predetermined position, remove the upper runner model that is fixed to the squeeze head of the squeeze device via the tahunde device, and attach it to the sprue rod or support pin of the upper mold model. Before and after this process, the new clay runner model is received with the Maki-nada sprue rod or support bottle for the new upper mold, and these two models are then lowered to the original position. One potato to be carried to the exchange position on the carrying conveyor, and the Makihata transfer equipment vII
IIc Therefore, the steps of transferring the two models at the exchange position onto the shield table and the two models on the zip tape p onto the carrying out conveyor, and $F II
#The model transferred onto the tochiepu is raised to a predetermined position via the jig and tochie pull, and the new clay bath model is fixed to the squeeze head via the tapping device, and then the new upper model is installed. A method for changing a model in a mold making machine, comprising the step of lowering the shield table together with the shield table.