JPH07308736A - Set up change device in forming machine - Google Patents

Abstract

PURPOSE:To provide a forming machine capable of easily and rapidly changing a forming die. CONSTITUTION:This device is provided with an openable/closable forming die 1 consisting of a plurality of split dies 1A, 1B, and die plates 4A, 4B to hold the respective split dies 1A, 1B. Heaters 7A, 7B, 8A, 8B to heat the prescribed parts of the split dies 1A, 1B are attached to the split dies 1A, 1B. The split dies 1A, 1B are placed on the die plates 4A, 4B through supporting members 33A, 33B, positioned in the vertical direction, and held to the die plates 4A, 4B by a pin member 36 engaged with engaging holes 34 of the split dies 1A, 1B through holding parts 31A, 31B of the die plates 4A, 4B from the side. Also, the device is provided with a driving means 25 to move a blowing device to blow the forming material into the forming dies 1A, 1B and a position adjusting operation panel 27 to control this driving means 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a setup changer in a molding machine for producing a core mold used for casting, for example.

[0002]

2. Description of the Related Art In a molding apparatus of this type, as shown in FIG. 7 (a), a molding die 1 composed of a fixed side split die 1A and a movable side split die 1B, and the split dies 1A and 1B are closed. Mold 1
A blower 2 for blowing sand, which is an example of a molding material, is provided therein. Each of the split dies 1A and 1B of the molding die 1 has a holding member 3 as shown in FIG.
Fixed side and movable side die plate 4 via A and 3B
It is held in A and 4B. Movable die plate 4B
Is connected to the ends of a plurality of drive shafts 5 slidably held by a fixed base 6 and is movable in the opening / closing direction A. As a result, the movable split mold 1B is moved in the opening / closing direction A and pressed against the fixed split mold 1A in a mold closed state (illustrated by a solid line in FIG. 8) and a mold open state separated from the fixed split mold 1A (see FIG. 8, the holding member 3B and the die plate 4B are displaced to (shown in phantom).

Burner chips 8A and 8B are provided inside the holding members 3A and 3B, respectively.
A heater installed at a predetermined position of B is arranged,
The burner tips 8A and 8B are protection plates 9A and 9B joined to the front side of the burner tip plates 7A and 7B.
Protected by B. This protection plate 9A, 9B
The return pins 10A, 10B and the ejector pins 13A, 13B projectingly provided on the respective sides are slidably inserted into the guide holes of the holding members 3A, 3B and the split dies 1A, 1B.

When the mold is closed as shown in FIG. 8, the fixed return pin 10A comes into contact with the front surface of the movable split mold 1B and is pushed into the fixed split mold 1A. 7A is displaced in the direction away from the split mold 1A against the urging force of the pressing spring 14A, and the ejector pin 13A retracts from the cavity C of the mold 1. On the other hand, on the movable side, the burner tip plate 7B is constantly urged by the pressing spring 14B in the direction away from the split mold 1B (rightward in FIG. 8), so that the ejector pin 13B is formed when the mold is closed. Type 1
It is retracted from the inside of the cavity C.

Next, when the movable side split mold 1B is opened to the right in FIG.
By the restoring force of 4A, the ejector pin 13A pushes out the molded product so as to remain in the movable side split mold 1B, and the burner tip plate 7A is also displaced rightward in FIG. 8 to heat a predetermined portion of the split mold 1A. On the other hand, on the movable side, after the flange portion 15a of the guide pin 15 holding the pressing spring 14B comes into contact with the fixed base 6, the die plate 4
When B is further moved to the right in FIG. 8, the ejector pin 13B is projected into the cavity C of the split mold 1B while pushing out the pressing spring 14B to push out the molded product, and the burner tip plate 7B is also moved to FIG. Is displaced to the left to heat a predetermined portion of the split mold 1B. This heating is performed to locally optimize the solidified state of the sand in the mold 1.

The blowing device 2 operates as follows. That is, when the mold 1 is closed,
In FIG. 7A, the cylinder 16 operates to lower the blow head 17, and the blow plate 18 attached to the blow head 17 is pressed against the upper surface of the molding die 1. By this pressing, the blowout port 18a of the blow plate 18 shown in FIG.
(FIG. 7A). Subsequently, the molding material suction device 19 is driven to suck out the molding material sand from the hopper 20 by the ejector effect of the air flow, and the sand is blown into the molding die 1 from the blowout port 18a of the blow plate 18 through the introduction port 11. .

[0007]

By the way, each split mold 1
A and 1B are fixed to the die plates 4A and 4B by bolts 12 via the holding members 3A and 3B shown in FIG.
Therefore, when the molding die 1 is replaced when changing the molded product, it becomes difficult to attach and detach the bolt 12 to and from the split dies 1A and 1B having a relatively large weight, and it takes a lot of time and labor to replace the molding die 1. Further, since the mold 1 has different parts to be heated for different types, the burner chips 8A and 8B must be replaced each time to the mounting positions of the burner chip plates 7A and 7B adapted to the newly mounted mold 1. I won't. Furthermore, since the newly attached mold 1 requires a considerable amount of time before being preheated to a usable state, the molding operation cannot be started immediately.

On the other hand, in the blower 2, it is necessary to replace it with another blow plate 18 having an outlet 18a corresponding to the inlet 16 of the replaced mold 1. However, the blow plate 18 is, as shown in FIG.
Since the plurality of bolts 21 are pressed and fixed to the blow head 17 via the fixing member 22 by tightening the plurality of bolts 21, it is necessary to attach and detach the bolts 21 at the time of replacement.

Further, when the blowout port 18a of the exchanged blow plate 18 is aligned with the introduction port 11 of the molding die 1, the handle 23 shown in FIG. While moving in the opening and closing direction A, the position of the outlet 18a is aligned with the inlet 11 by the operator's visual inspection. Therefore, at least two workers are required to operate the handle 23 and monitor the alignment, and positioning is troublesome if the two workers cannot breathe.

As described above, in the conventional molding apparatus, each time the molded product to be manufactured is changed, the above-mentioned various complicated operations are required in both the blower 2 and the molding die 1, and therefore, the molding is performed. There is an inconvenience that a considerable amount of time is required for the setup change accompanying the die change.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a setup changing device in a molding machine, which can easily and quickly perform a mold replacement work.

[0012]

In order to achieve the above-mentioned object, a setup changing device in a molding machine according to a first aspect of the present invention comprises an openable / closable molding die comprising a plurality of split dies.
A die plate that holds each of the split dies and a heater that is attached to the split dies and that heats a predetermined portion of the split dies are provided.

According to a second aspect of the present invention, there is provided a setup changer in a molding machine, which comprises an openable / closable molding die including a plurality of split dies, and a die plate for holding each of the split dies. , Mounted on the die plate via a support member, positioned vertically, and held on the die plate by a pin member that penetrates the holding portion of the die plate from the side and is engaged with the engaging hole of the split mold Has been done.

Further, the setup changer in the molding machine according to the third aspect of the present invention is configured such that the mold is composed of a plurality of split molds and can be opened and closed, and the mold can be moved relative to the mold in the opening and closing direction. A blower for blowing a molding material into the mold from an inlet provided in the mold, a drive means for moving the blower in the opening / closing direction, and a molding provided for the blower by controlling the drive means. And a control means for matching the material outlet with the inlet of the mold.

[0015]

According to the invention of claim 1, the heater for heating a predetermined portion of the split mold is attached to the split mold. That is, the split type is divided into blocks by attaching a dedicated heater for each type. Therefore, when replacing the molding die, it is not necessary to change the configuration of the heater. Moreover, the split mold has a dedicated heater built in, so it is possible to preheat it by driving the heater before use. Therefore, immediately after newly mounting the mold on the die plate, Molding work can be started.

According to the second aspect of the present invention, the split mold is positioned on the die plate in the vertical direction by placing it on the die plate via the support member, and then the pin member is laterally penetrated through the holding portion of the die plate. It is attached to the die plate by engaging the split type engagement holes. Therefore,
Since the split mold can be attached to and detached from the die plate only by inserting / pulling out the pin member, the attachment / detachment can be remarkably easier and quicker than the conventional fixing means using bolts.

According to the third aspect of the invention, by operating the control means to control the drive means, the drive means automatically moves the blower device in the opening / closing direction of the molding die. Therefore, the operator operates the control means while standing in the vicinity of the molding die to move the blowing device while visually checking the alignment of the molding material outlet of the blowing device with respect to the inlet of the molding die. You can control. Therefore, it is possible for only one worker to perform the positioning work of the blow device with respect to the mold, and since the worker moves the blow device while directly monitoring it by himself, the blowing port can be used as the introduction port in an extremely short time. Can be matched exactly.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an entire setup changer in a molding machine according to an embodiment of the present invention. In the figure, the molding machine includes a molding die 1 and a blowing device 2. First, the blow device 2 will be described. The blow device 2 is installed so as to be movable relative to the mold 1 in the opening / closing direction A, and the screw rod 24 rotates forward and backward to insert or retract the blow device 2 so that the blow device 2 blows. The configuration in which the device 2 is relatively moved in the opening / closing direction A is the same as in FIG. 7. Further, the means for supplying the molding material in the blowing device 2 is also the same as in FIG. Next,
Only the configuration different from FIG. 7 will be described.

The screw rod 24 is a motor (a kind of driving means) 2
The rotational force of 5 is transmitted through the speed reducer 26 to rotate, whereby the entire blowing device 2 is automatically moved. The rotation of the motor 25 is controlled by operating a position adjusting operation panel (a kind of control means) 27. The position adjustment operation panel 27 not only controls the relative movement of the blower device 2 in the opening / closing direction A by rotating the motor 25 in the forward and reverse directions, but also
The control for raising and lowering the blow head 17 can also be operated.

FIG. 2 is an enlarged view showing the blow head 17 in FIG. 1 partially broken away. Blow plate 18
Instead of the conventional bolt, is clamped and fixed to the blow head 17 via the fixing member 22 by the fastening operation of the clamp member 28. The clamp member 28 has a locking portion 28b fixed to one end of an actuating shaft 28a inserted through the blow head 17 and the fixing member 22, and the mounting member 28c is mounted on the blow head 17 with a screw portion at the bottom. The blow head 17 and the fixing member 22 are sandwiched by the locking portion 28b. Operating shaft 28a
The other end of is attached to the operating lever 28 at the upper part of the attachment member 28c. When the operating lever 28d is rotated and tilted as shown by the solid line, the operating shaft 28a is pulled up, the locking portion 28b presses the fixing member 22 upward, and the blow plate 18 is fixed to the blow head 17.

When the blow plate 18 is replaced to replace the molding die 1, the operating lever 28d of the clamp member 28 is rotated upward from the solid line position in FIG. 2 to the alternate long and short dash line position, whereby the operating shaft 28a is moved downward. And the pressing by the locking portion 28b is released. In this state, the blow plate 18 is pulled out, a new blow plate 18 is inserted, and then the operation lever 28d is rotated so as to be tilted, whereby the blow plate 18 is fixed. As described above, since the blow plate 18 can be fixed and released by a one-touch operation, the blow plate 18 can be attached and detached much more easily and quickly as compared with the conventional fixing by the bolt.

Next, when the blowout port 18a of the newly installed blow plate 18 is matched with the introduction port 11 of the molding die 1, an operator stands at a position near the molding die 1 and the position adjusting operation panel 27. By operating the mold 1
Outlet 18 of the bro-plate 18 to the inlet 11 of
The movement of the blowing device 2 can be controlled while visually checking the alignment of a. Therefore, the positioning work of the blow device 2 with respect to the molding die 1 can be performed by only one worker, and the worker moves the blow device 2 while directly monitoring the blow device 2 in a very short time.
Can be accurately matched to the inlet 11.

FIG. 3 is a cut plan view showing the mold open state of the mold 1, and FIG. 4 is a cut plan view showing the mold closed state of the mold 1. In these figures, the same or equivalent parts as those in FIG. 8 are designated by the same reference numerals, and only the structure different from that of FIG. 8 will be described.

The split dies 1A and 1B of the molding die 1 are fixed to the mounting plates 30A and 30B, which are standardized plates, with bolts (not shown) via holding members 3A and 3B, respectively. In each space surrounded by the mounting plates 30A and 30B and the holding members 3A and 3B, burner chip plates (a kind of heater) 7A and 7B and protective plates 9A and 9B joined to the burner chip plates are installed. The burner tip plates 7A, 7B and the protection plates 9A, 9B are provided movably in the opening / closing direction A in the space with the return pins 10A, 10B and the ejector pins 13A, 13B as guides.

That is, each split mold 1A, 1B of the mold 1
The holding members 3A, 3B and the mounting plate 30A,
The burner chip plates 7A and 7B and the protection plates 9A and 9B are incorporated through 30B to form split type blocks 100A and 100B. Therefore,
As the burner tip plates 7A, 7B, corresponding to all types of molding dies 1, their respective split dies 1A, 1B
The burner chips 8A and 8B are attached to the predetermined places to be heated of the molding die 1 only in advance, and the burner chip plates 7 are provided.
A and 7B are installed in the corresponding split molds 1A and 1B as described above, and split mold blocks 10 of the molds 1 of all kinds are formed.
0A and 100B are prepared.

Both split mold blocks 100A, 100B constituting one molding die 1 are die plates 4A, 4B through their standardized mounting plates 30A, 30B.
Attached to. Therefore, the mounting plate 30A,
30B has the same shape for all types of molding dies 1, and the attachment means to the die plates 4A and 4B is the same on both the fixed side and the movable side.

Next, the fixed block 100A on the fixed side
The mounting means will be described, but the split block 100B on the movable side can also be mounted by the same means. Figure 5
(A) and (b) are split mold blocks 1 on the fixed side of the mold 1.
It is a front view and a plan view showing an attached state of 00A. 6 (a) and 6 (b) are a front view and a plan view of a state in which both split mold blocks 100A and 100B in one molding die 1 are integrated by a connecting plate 29.

As shown in FIG. 3, brackets (a kind of holding portions) 31A and 31B are fixedly mounted on the die plates 4A and 4B at both end faces in the front-rear direction B, and also shown in FIG. As described above, the positioning plate 32 having an L-shaped vertical cross section is fixed to the upper surface with screws. On the other hand, as shown in FIGS. 5 and 6, a pair of elongated plate-shaped support members 33 are provided on the upper surfaces of the split blocks 100A and 100B.
A and 33B project from the mounting plates 30A and 30B in the opening / closing direction A and are fixed to the holding members 3A and 3B with bolts. The pair of support members 33A and 33B are arranged in parallel at substantially the same interval as the width of the positioning plate 32 in the front-rear direction.

Further, as shown in FIGS. 6 (a) and 6 (b), each mounting plate 30A, 30B is provided with two engaging holes 34. On the other hand, each bracket 31A,
As shown in FIG. 3, an insertion hole 35 is formed in 31B at a position corresponding to the engagement hole 34. This insertion hole 3
5 is inserted into the engaging hole 34 and is inserted into the pin member 36,
An annular handle 36a for operation is integrally provided.

Next, the procedure of setup change when changing the molded product to be manufactured in the above-mentioned molding apparatus will be explained. The split molds 1A and 1B of the respective molding dies 1 shown in FIG. 3 are configured as split mold blocks 100A and 100B by attaching dedicated burner chip plates 7A and 7B to the split molds 1A and 1B. As shown in FIG. 6, each type of molding die 1 connects the two divided mold blocks 100A and 100B to each other in a mold closed state by a connecting plate 29 as shown in FIG. Put it on the exchange cart and store it. Further, each of the split mold blocks 100A, 100B includes a burner chip plate 7A, which is dedicated to the split molds 1A, 1B of FIG.
Since the 7B is incorporated, the split dies 1A and 1B can be preheated by energizing the burner tips 8A and 8B attached to the burner tip plates 7A and 7B before use. Therefore, after the split molds 1A and 1B are attached to the die plates 4A and 4B, the molding work can be started immediately.

When the mold 1 is replaced, the two mold halves 1A and 1B which are in the mold closed state are connected to each other by the connecting plate 29, and then the grip 36a is held to move each pin member 36 in the direction of the arrow in FIG. Pull out. As a result, the mounting plate 30A,
The engagement between 30B and the brackets 31A and 31B, that is,
The split blocks 100A and 100B shown in FIG. 5 are disengaged from the die plates 4A and 4B, and the split blocks 100A and 100B in the mutually connected state have the support member 33.
It is in a state of being simply placed on the die plates 4A and 4B via A and 33B. When the two split mold blocks 100A and 100B connected to each other are lifted by, for example, a crane and placed on a dedicated exchange cart, the removal of the mold 1 is completed.

Next, the two divided mold blocks 100A and 100B connected to each other of the mold 1 to be newly attached are
After hoisting with a crane, both die plates 4A, 4
The pair of left and right support members 33A, 33B are placed on the upper surfaces of the die plates 4A, 4B while inserting the positioning plate 32 between them while lowering so as to be inserted between B.
As a result, both split mold blocks 100A, 1 of the mold 1 are
00B is vertically positioned with respect to the die plates 4A and 4B by the support members 33A and 33B, and
A pair of support members 3 positioned so as to sandwich the positioning plate 32
The die plates 4A and 4B are positioned in the front-rear direction B by 3A and 33B. Through this positioning, the insertion hole 3
5, the engaging hole 34 exactly matches. Finally, the pin member 3
When 6 is inserted into each insertion hole 35 and the engagement hole 34 from the front and rear sides, both split type blocks 100A and 100B are dies by the pin member 36 which penetrates the brackets 31A and 31B and is engaged with the engagement hole 34. It is held by the plates 4A and 4B.

As described above, the mold 1 can be replaced easily and quickly because no bolts are used. Also,
The burner tip plates 7A, 7B are each split type 1A,
Since a dedicated one is provided for 1B and is attached to the split dies 1A and 1B, it is not necessary to change the attachment position of the burner tips 8A and 8B each time the forming die is exchanged. Moreover, since the split dies 1A, 1B are provided with dedicated burner tip plates 7A, 7B and are made into blocks, only predetermined portions can be effectively preheated before use, so that the die plates 4A, After mounting on 4B, the molding work can be started immediately.

As shown in FIG. 4, the burner tip plate 7A in the fixed-side split block 100A.
Is the pressure spring 14A through the through hole of the mounting plate 30A.
Is always biased to the movable side by. On the other hand, on the movable side, the conventional pressing spring 14B is omitted, and in the mold closed state shown in, the return pin 10B comes into contact with the fixed-side split mold 1A and is then pressed to the right. The burner tip plate 7A is retracted to the right.
When the mold is open, the pressing rod 6 provided on the fixed base 6
The a and 6b contact the burner tip plate 7B through the relief holes 4b and 30b of the die plate 4B and the mounting plate 30B which are moved to the right side, and press it to the left side.

[Brief description of drawings]

FIG. 1 is a front view showing an entire molding apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged view showing the blow plate in FIG. 1 with a part thereof cut away.

FIG. 3 is a cut plan view showing a mold open state of the molding die according to the above embodiment.

FIG. 4 is a cut plan view showing a closed state of the molding die.

FIG. 5 (a) is a front view of a fixed side portion of the above-mentioned forming die,
(B) is a plan view of the fixed side portion.

FIG. 6 (a) is a front view of the same mold, and FIG. 6 (b) is a plan view of the same mold.

FIG. 7 (a) is a front view showing the entire conventional molding apparatus,
(B) is an enlarged view showing a part of the blow plate in (a).

FIG. 8 is a cut plan view showing a mold closed state of a molding die of the same apparatus.

[Explanation of symbols]

1 ... Mold, 1A, 1B ... Split mold, 2 ... Blow device, 4
A, 4B ... Die plate, 7A, 7B ... Burner chip plate (heater), 8A, 8B ... Burner chip (heater), 11 ... Inlet port, 18 ... Outlet port, 25 ... Motor (driving means), 27 ... Position adjustment operation panel (control means), 3
1A, 31B ... Bracket (holding part of die plate),
33A, 33B ... Support member, 34 ... Engagement hole, 36 ... Pin member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toshinori Gun, 1-1 Kawasaki-cho, Akashi-shi, Hyogo Prefecture Kawasaki Heavy Industries Ltd. Akashi factory (72) Inventor Tsutomu Higashi 1-1, Kawasaki-cho, Akashi-shi, Hyogo Kawasaki Heavy Industries Akashi Factory Co., Ltd.

Claims (3)

[Claims] 1. A mold comprising a plurality of split dies that can be opened and closed, a die plate for holding each of the split dies, and a heater attached to the split dies for heating a predetermined portion of the split dies. The setup changer in the provided molding machine. 2. An openable and closable mold comprising a plurality of split dies, and a die plate for holding each of the split dies, wherein the split dies are placed on the die plate via a support member to vertically move. A setup changer in a molding machine that is positioned and is held on a die plate by a pin member that is laterally penetrated through a holding portion of the die plate and engaged with an engagement hole of the split mold. 3. A mold which is composed of a plurality of split molds and which can be opened and closed, and a molding material which is set to be relatively movable in the opening and closing direction with respect to the mold and is introduced from an inlet port provided in the mold into the mold. A blower for injecting the blower, a drive means for moving the blower in the opening / closing direction, and a control for controlling the drive means so that the blowout port of the molding material provided in the blower matches the inlet of the molding die. And a setup changing device in a molding machine.