JPS6297814A - Molding tool - Google Patents

Abstract

PURPOSE:To realize the easy molding of large-sized molded parts on a multikind and small quantity production scale by simply and safely inserting and removing a fixed core and a movable core in order to frequently change molds by a method wherein carrying rollers for the fixed core and for the movable core are provided respectively on a fixed side die set and on a movable side die set. CONSTITUTION:Supporting bars 80 for the first carrying plate are arranged on both sides of a fixed side die set 1. In addition, the first carrying plate 77 is installed through the supporting bars 80 at the inlet of an insertion hole 6 for a fixed core. By operating the handle 30 of the first vertical operating bar 28 so as to rotate the bar in order to direct the major axis portion of a bar main body 29 to the vertical direction, the fixed core 13 is floated through the first carrying rollers 25. The fixed core 13 is carried along the first carrying rollers 25 out of the insertion hole 6 and installed on the first carrying plate 77. After that, the fixed core 13 is lifted up with a chain block and transferred to a mold yard in order to be stored by removing the chain block. Furthermore, because a movable side die set is provided with carrying rollers 51 and a carrying plate 81 adapted for a movable core 45, the movable core can easily and safely be changed similarly as the fixed core.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a mold used for plastic injection molding, etc., and is particularly applicable to molds that are frequently replaced in the production of a wide variety of large molded products in small quantities. This invention relates to a suitable molding die.

[Background of the invention]

The conventional technology for this molding mold includes the technology disclosed in Japanese Patent Application Laid-open No. 55-34950 for Daisei molded products, and the technology disclosed in Japanese Patent Application Laid-open No. 116420-1983 for small molded products.
There is a technique disclosed in the publication No.

Among the above-mentioned conventional techniques, the technique disclosed in Japanese Patent Application Laid-open No. 55-34950 attempts to reduce costs by manufacturing the pieces of the product part by casting or hot hobbing. However, manufacturing pieces by casting or hot hobbing requires masks, etc., post-processing, and superplastic metals are expensive, so the desired effect cannot be obtained. It is.

On the other hand, in the technology disclosed in Japanese Patent Application Laid-Open No. 60-116420, the pieces are processed using conventional manufacturing methods and mold materials, resulting in a more precise shape than casting or hot hobbing.
It has the advantage of being able to be sized and molded into many different types of products by replacing the pieces each time the product changes. However, since this conventional technology assumes that the pieces are replaced manually, it is extremely difficult to manually replace more than 4 pieces in 15 to 20. It was not suitable for production.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art described above and to provide a molding die that is effective for molding large-scale molded products in small quantities with a wide variety of molds by frequently exchanging the mold.

[Summary of the invention]

The present invention is characterized in that the fixed die set and the movable die set are provided with transport rollers for the fixed core and the movable core, respectively. can be inserted and removed easily and safely, and therefore the mold can be replaced frequently to easily mold large-scale molded products in small quantities of a wide variety.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing a retaining means for connecting an ejector plate and a block for operating an ejector pin.

The molding die of the embodiment shown in FIG. 1 includes a fixed die set 1, a fixed core 13, a first conveyance roller 25 for the fixed core, and a first vertical operation rod 28 for vertically moving the fixed core. This embodiment also includes a movable die set 31, a movable core unit 44, a second conveyance roller 61 for the movable core unit, and a second vertical operation rod 64 for vertically moving the roller. Now, the first transport plate 77 for the fixed core.
, a set of supporting pars 80 for this, a second conveyance plate 81 for the movable core unit, and a set of supporting pars 84 for this.

As shown in FIG. 1, the stationary die set 1 is constructed by integrally connecting a stationary mounting plate 2 and a stationary plate 3 with a tightening screw (not shown) K.

A spool bush 4 is provided on the fixed mounting plate 2.

An insertion hole 6 for a fixed core is provided approximately at the center of the fixed mold plate 3. Further, on the parting surface 5 of the fixed mold plate 3, a first. Second. Fitting grooves 7 and 8 for the third clamper
．． 9 is formed, and a first wedge fitting groove 1° having an inclined surface on the side of the first clamper fitting groove 7 is formed on one side of the fixed core insertion hole 6. Insertion hole 6 for fixed core
At the bottom of the
8 is formed therein, and a guide post 12 is attached to the parting surface 5.

As can be seen from FIG. 1, a fixed core 13 is inserted into the insertion hole 6.

A screw hole 14 for a hanging bolt is formed in the fixed core 1-3.

As shown in FIG. 1, the fitting groove 7 is provided with a tightening bolt 1.
A first clamper 15 is attached via 6.

This first clamper 15 is a trap to hold down a first wedge 21, which will be described later.

The fitting groove 8 has a tightening screw 18 as shown in FIG.
A second clamper 17 is attached to the clamp via the clamp. This second clamper 17 is configured to press both sides of the fixed core 13 inserted into the insertion hole 6.

As shown in FIG. 1, the fitting groove 9 has a tightening screw 20.
A third clamper 19 is attached via. This third clamper 19 is configured to press the upper part of the fixed core 13.

As can be seen from FIG. 1, a first wedge 21 is inserted into the fitting groove 10. Said first wedge 21
A notch 22 and a screw hole 23 are formed in the .

This first wedge 21 is inserted into the fitting groove 1 OK and is pressed so that the fixed core 13 inserted into the insertion hole 6 does not come out.
1 itself is the first clamper 1 placed over the notch 22
5, and when it is to be pulled out, the first clamper 15 is slid to a position removed from the notch 22, and then the extraction bolt 24 is screwed into the screw hole 23 and pulled out.

In this embodiment, the accommodation grooves 11 are provided in two horizontal rows at the bottom of the fixed core insertion hole 6, but there may be three or more. Each accommodation groove 111C is connected to the first conveyance roller 2.
5 and the first vertical operation rod 28 are housed in a vertically stacked state.

As shown in FIG. 1, the first conveyance roller 25 includes a frame 26 having a concave cross section and a plurality of rollers 27 rotatably supported by the frame 26.

As shown in FIG. 1, the first vertical operation rod 28 includes a rod main body 29 and a nozzle 30. The rod body 29 is formed into a round rod with both sides cut out or an elliptical cross section. The first vertical operation rod 2B is disposed below the first conveyance roller 25 in the housing groove 11, and the handle 50 is operated to set the long diameter portion of the rod body 29 in the vertical direction. When this occurs, the conveying surface of the roller 27 of the first conveying roller 25 is pushed up so as to protrude from the accommodation groove 11, and when the short diameter portion of the rod body 29 is set in the vertical direction, the first conveying roller 25
The conveyance surface of the roller 27 can be lowered so that it fits within the storage groove 11.

As shown in FIGS. 1 and 2, the movable die set 31 includes a movable mold plate 32, a receiving plate 33, a spacer block 54, a movable mounting plate 35, and these receiving plates 33 and spacer blocks 34. The first and second ejector plates 68 are provided in a space surrounded by the movable mounting plate 35 and the movable mounting plate 35.
．． 69, and locking means 71 for a block for operating the ejector bin.

The movable mold plate 32, the receiving plate 63, the spacer block 34, and the movable mounting plate 65 are integrally connected by a tightening screw (not shown).

An insertion hole 37 for a movable core unit is provided approximately at the center of the movable mold plate 32. In addition, the movable template 32
The parting side 3 is the 4th part. Fitting grooves 38, 39, 40 for the fifth and sixth clampers are formed, and a second wedge having a slope on the side of the fitting groove 58 is formed on one side of the insertion hole 37 for the movable core unit l'. A fitting groove 41 for the movable core unit is formed at the bottom of the insertion hole 37 for the movable core unit.
2 is formed, and the parting surface 36 is further provided with a guide bush 43 that fits into the guide post 12 attached to the fixed mold plate 3.

As can be seen from FIG. 1, the movable core unit 44 is inserted into the insertion hole 57.

As shown in FIG. 1, the movable core unit 44 includes a movable core 45, an ejector bin 46, a block 47 for operating the ejector bin, a stop plate 48 for fixing the ejector pin, and a handle 49 for working. It is equipped with The ejector bin 46 is a block 4 for operating the ejector bin.
7 and is fixedly attached to a stop plate 48.

The handle 49 has a screw hole (not shown) provided in the block 47 for operating the ejector bin through the movable core 45.
It is installed by screwing it in, and can be removed when not needed. The movable core 45 has a screw hole 50 for a hanging bolt.

As shown in FIG. 1, a fourth clamper 51 is attached to the fitting groove 38 formed in the parting surface 36 of the movable mold plate 32 via a tightening port 52. This fourth clamper 51 is adapted to press a second wedge 57, which will be described later.

The fitting groove 39 has five tightening screws 5 as shown in FIG.
A fifth clamper 53 is attached via 4.

The fifth crutch 53 is adapted to press both sides of the movable core 450 inserted into the insertion hole 37.

As shown in FIG. 1, the fitting groove 40 is provided with a tightening screw 5.
A sixth clamper 55 is attached via 6.

This sixth clamper 55 is adapted to press the upper part of the movable core 45.

As can be seen from FIG. 1, a second wedge 57 is inserted into the fitting groove 41. Said second wedge 57
A notch 58 and a screw hole 59 are formed in the.

This second wedge 57 is inserted into the fitting groove 41 and is configured to hold down the movable core 45 of the movable core unit 44 inserted into the insertion hole 57 so that it does not come out. Further, the second wedge 57 is held down by the fourth clamper 51 placed over the notch 58. and,
When pulling out the second wedge 57, the fourth clamper 51 is slid from the notch 58 to a position where it is removed, and then the pulling bolt 60 is screwed into the screw hole 59 and pulled out.

In this embodiment, the accommodation grooves 42 are provided in two horizontal parallels at the bottom of the insertion hole 37 for the movable core unit;
More than one book may be provided. Each housing groove 42 accommodates a second conveyance roller 61 and a second vertical operation rod 64 in a vertically stacked state.

As shown in FIG. 1, the second conveyance roller 61 includes a frame 62 having a concave cross section and a plurality of rollers 63 rotatably supported by the frame 62.

As shown in FIG. 1, the second vertical operation rod 64 includes a rod body 65, and a handle 66.

The rod main body 65 is formed in the shape of a round rod with both sides cut out or an elliptical cross section. The second vertical operation rod 64 is disposed below the second conveyance roller 61 in the storage groove 42, and the handle 66 is operated to set the long diameter portion of the rod body 65 in the vertical direction. When this occurs, the conveying surface of the roller 63 of the second conveying roller 61 is pushed up so as to protrude from the storage groove 42, and when the short diameter portion of the rod body 65 is set in the vertical direction, the conveying surface of the roller 63 of the second conveying roller 61 is pushed up. A trap is formed so that the conveyance surface of the roller 63 can be lowered to fit within the storage groove 42.

As shown in FIG. 1, the receiving plate 33 of the movable die set 31 is provided with an insertion hole 67 for the block 47 for operating the ejector pin of the movable core unit 44.

Said 1st. The second ejector plates 68, 69 are joined together incorporating the lead pi/70.

The ejector pin operation block locking means 71 is connected to the first ejector plate 68 as shown in FIG.
A fitting hole 72 of the block 47 for operating the ejector pin formed in the slide plate 73 attached to the first ejector grate 68 via a guide member 74, and a gate formed in the slide plate 73. Mold hole 75
The holding member 76 is provided on both sides of the holding member 76. The slide plate 73 is attached to the movable die set 31 so as to be openable and closable from the outside. Then, with the slide plate 73 open, this locking means 71 fits the block 47 for operating the ejector pin of the movable core unit 44 into the fitting hole 72, and closes the slide plate 73. The ejector pin operation block 47 is pressed down by the provided pressing member 76, and the first. A block 47 for operating the ejector pin is attached to the second ejector plate 68, 69.
is configured to combine.

As shown in FIG. 1, the first conveyance plate 77 for the fixed core has a plate main body 78 and a row of rollers 79 provided thereon. The plate main body 78 is
It is formed by bending the middle portion in the length direction into a tray shape over a slightly wider range than the width of the fixed core 13, and bending both sides in the length direction downward. Said row 27
A plurality of nine rows are provided in the bent middle portion of the plate main body 78. The first conveyance plate 77 is installed at the entrance of the fixed core insertion hole 6 when the fixed core 13 is inserted or removed, and the support bar 80 supports the conveyance surface of the row of rollers 79 on the first conveyance plate 77. The roller 25 is set to match the conveying surface of the roller 27.

The second transport plate 81 for the movable core unit is
Similar to the first conveyance plate 77, the plate main body 82
and 83 rows of rollers provided thereon. The plate main body 82 is formed by bending the middle part in the longitudinal direction into a tray shape over an area slightly wider than the width of the movable core unit 44, and bending both sides in the longitudinal direction downward. There is. A plurality of rows of the rollers 83 are provided in the bent intermediate portion of the plate body 82. Therefore, this second conveyance plate 81 is
When the movable core unit 44 is inserted or removed, the conveyance surface of the roller 83 row (installed at the entrance of the movable core insertion hole 67 and supported by the support bar 84) is connected to the conveyance surface of the roller 63 of the second conveyance roller 61. It is set according to.

The molding die of the above embodiment is used and operates as follows.

In other words, when assembling each member into a moldable state,
The fixed side die set 1 and the movable side die set 31 are attached to the molding machine in advance.

Next, the first vertical operation rod 28 is inserted into each accommodation groove 11 at the bottom of the fixed core insertion hole B provided in the fixed mold plate 3 of the fixed side die set 1, and the first conveyance roller 25 is placed on top of the first vertical operation rod 28. Set up. Then, the handle 30 of the first vertical operation rod 28 is operated to set the long diameter portion of the rod body 29 in the vertical direction, and the first conveying roller 25 is moved so that the conveying surface of the roller 27 protrudes from the storage groove 11. set to the desired level.

Next, support bars (-80) are placed on both sides of the stationary die set 1, and the first conveyance plate 77 is installed via the support bars 80 in alignment with the entrance of the insertion hole 6 for the stationary core.

There is still a first hole inside the insertion hole 6 for the fixed core. 2nd, 3rd
The clampers 15, 17, 19 of the first, second, . Move the sixth cranometer (15°17.19) to the outside of the insertion hole B.

Next, a suspension bolt (not shown) is attached to the screw hole 14 formed in the upper part of the fixed core 16, and the fixed core 13 is lifted by a chain block (not shown). The fixed core 13 is placed on the transport plate 77, the lifting chain (not shown) is slightly loosened, and the chain block is kept in a suspended state for safety reasons without removing the chain block.

Next, the fixed core 13 placed on the first conveyance plate 77 is pushed into the insertion hole 6, and the first conveyance roller 25 accommodated in the accommodation groove 11 provided at the bottom of the insertion hole 6 is pushed into the insertion hole 6.
is transferred into the insertion hole 6 and inserted.

As mentioned above, by using the first conveyance plate 77 and the first conveyance roller 25, a worker can easily and safely insert the fixed core 15 with one hand to the position where it fits into the fixed core insertion hole B. It is possible to do so.

After the fixed core 13 has been inserted, move the second clampers 17 provided on both sides of the fixed core insertion hole B inward and lightly tighten the tightening screws 18 to prevent the fixed core 13 from popping out. Stop at. Next, operate the handle 30 of the first vertical operation rod 28 to set the short diameter portion of the rod body 29 vertically, so that the conveyance surface of the roller 27 of the first conveyance roller 25 is in the storage groove 11. Make sure it fits. As a result, the fixed core 13 comes into close contact with the bottom of the insertion hole 6 due to its own weight.

Next, the extraction bolt 24 is attached to the first wedge 21 through the screw hole 23, and this first II! 21 is inserted into the fitting groove 10 having a slope formed on one side of the insertion hole B from the parting surface 5 side of the stationary die set 1. After inserting this first wedge 21, remove the extraction bolt 24, move the first clamper 15 toward the inside of the insertion hole 6 for the fixed core, and move the first clamper 15 into the first wedge. 21, tightly tighten the tightening screw 16 of the first clamper 15, and push the first wedge 21 from the parting surface 5 side. Wedge 21
The fixed core 13 is pressed in the width direction and downward direction by the action of the gradient K. Next, the tightening screw 18 of the second clamper 17 is strongly tightened, and the sixth clamper 19 is further moved toward the lower side of the insertion hole B for the fixed core.
Strongly tighten the tightening screw 20 of the clamper 19 to fix the fixed core 13 so that it will not come out.

Then, remove the hanging bolts and chain block that were attached to the fixed core 13, and remove the insertion hole 6 for the fixed core.
The first conveyance plate 77 installed at the entrance of the fixed core and its support bar 80 are removed, and the first conveyance roller 25 and the first The vertical operation rod 28 is removed.

Next, the second vertical operation rod 64 is inserted into each accommodation groove 42 at the bottom of the insertion hole 67 for the movable core provided in the movable template 62 of the movable die set 31, and the second conveyance roller is placed on top of the second vertical operation rod 64. 61 will be installed. Then, the second vertical operation rod 64 is rotated.
The handle 66 is operated to set the long diameter portion of the rod body 65 in the vertical direction, and the second conveying roller 61 is set so that the conveying surface of the roller 63 protrudes from the storage groove 42 .

Next, support bars 84 are arranged on both sides of the movable die set 31, and the second transport plate 81 is installed on the support bars 84 in alignment with the entrance of the insertion hole 67 for the movable core.

Furthermore, a 4th degree and a 5th degree are located inside the insertion hole 67 for the movable core.
To prevent the sixth clamper 51, 53, 55 from protruding,
These 4th. Fifth. The sixth clamper 51°53.55 is moved to the outside of the insertion hole 37.

Additionally, a hanging bolt (not shown) is attached to the screw hole 50 formed in the upper part of the movable core unit 45.
4 by a chain block (not shown), pass the block 47 for operating the ejector pin in the movable core unit 44Vc through the insertion hole 37 for the movable core, and insert it into the insertion hole 67 provided in the receiving plate 33. Insert until the seeds.

Next, the movable core unit 44 is transferred to the second transport plate 8.
1, loosen the lifting chain (not shown) a little, and keep the movable core unit 44 suspended without removing the chain block for safety reasons.

Next, the movable core unit 44 placed on the second transport plate 81 is pushed into the insertion hole 67 for the movable core.
The movable core 45 is inserted into the insertion hole 37 via the second conveyance roller 61 accommodated in the accommodation groove 42 provided at the bottom of the ejector plate 68 , and the ejector is inserted into the fitting hole 72 formed in the first ejector plate 68 . A block 47 for pin operation is fitted.

When the movable core unit 44 is carried in, a worker can insert the movable core 45 into the movable core insertion hole 37 by using the second conveyance plate 81 and the second conveyance roller 61. block 4
A block 47 for operating the ejector pin is inserted into the fitting hole 72 of 7.
can be easily and safely transported with one hand to a position where it fits.

Note that the handle 49 of the movable core unit 44 is removed from time to time.

After carrying in the movable core unit 44, the fifth clampers 53 provided on both sides of the movable core insertion hole 37 are moved inward and the tightening screws 54 are lightly tightened to prevent the movable core unit 44 from popping out. Stop it so that it doesn't happen. Then, the second
Operate the handle 66 of the vertical operation rod 64 to lower the rod body 65.
The short diameter portion of the second conveying roller 61 is set vertically so that the conveying surface of the roller 63 of the second conveying roller 61 is accommodated in the accommodation groove 42 .

As a result, the movable core 45 descends due to its own weight and the insertion hole 3
It sticks to the bottom of 7.

Next, the extraction bolt 60 is attached to the second wedge 57 through the screw hole 59, and the second wedge 57 is inserted into the fitting groove 41 having the slope formed on one side of the insertion hole 37. , insert from the parting surface 36 side of the movable die set 31. After inserting this second wedge 57, remove the extraction bolt 60,
Move the fourth clamper 51 toward the inside of the movable core insertion hole 37, and move the fourth clamper 51 to the second wedge 57.
the tightening screw 5 of the fourth clamper 51.
2 strongly tighten the second wedge 57 on the parting surface 36
By pushing in from the side, the slope of the fitting groove 41 and the second
Due to the slope of the wedge 57, the movable core 45 is pressed in the width direction and downward direction. And the fifth clamper 53
Strongly tighten the tightening screw 54 of the movable core 45, move the sixth clamper 55 toward the lower side of the movable core insertion hole 37, strongly tighten the tightening screw 56 of the sixth clamper 55, and move the sixth clamper 55 toward the bottom of the movable core insertion hole 37. Fix it so that it does not come out.

Also, locking means 71 for the block for operating the ejector pin.
The slide plate 73 that constitutes the guide member 74
As shown in FIG.
．． The second ejector plate 68, 69 &C is coupled to the block 47 for operating the ejector bin.

On the other hand, remove the suspension bolt and chain block attached to the movable core 45, and insert the movable core into the insertion hole 37.
The second conveyance plate 81 installed at the entrance of the movable core and its support bar 84 are removed, and the second conveyance roller 61 and the second The vertical operation rod 64 is removed.

Next, the movable die set 31 is moved relative to the fixed die set 1, and the guide bush 43 provided on the movable die set 31 is fitted into the guide post 12 provided on the fixed die set 1. After aligning the movable die set 31 with the fixed die set 1, the fixed die set 1 and the movable die set 31 are combined together.
After these are combined, the molding material is supplied through the spool bushing 4 provided on the stationary die set 1 in accordance with normal usage conditions to obtain a molded product (not shown).

After cooling the molded product, the movable die set 31 is moved to open the mold, and the first. Second ejector plate 68.6
9 is moved forward, the block 47 for operating the ejector bin in the movable core unit 44 is moved, the ejector bin 46 is advanced toward the movable core 45, and the molded product is ejected and removed.

After removing the molded product from the movable core unit 44, the first
．． The second ejector plate 68, 69, the block 47 for operating the ejector bin, and the ejector bin 46 are moved back to complete one stroke. .

Next, when replacing the set of fixed core 13 and movable core unit 44 with another one, proceed as follows.

That is, with the mold open, the support bars 80 for the first conveyance plate are arranged on both sides of the stationary die set 1,
A first conveyance plate 77 is installed at the entrance of the fixed core insertion hole 6 via this support bar 80.

Furthermore, a first vertical operation rod 28 and a first transport row 2 are provided in each accommodation groove 11 provided at the bottom of the insertion hole B for the fixed core.
25 and are inserted and accommodated.

Next, a hanging bolt is attached by screwing it into the screw hole 14 provided on the upper part of the fixed core 13, and a chain block is attached, and one chain is slightly loosened.

Next, loosen the tightening screw 16 of the first clamper 15, and
Move the clamper 15 to the outside of the fixed core insertion hole B. Next, a pull-out bolt 24 is attached to a screw hole 23 provided in the first sleeve 21, the pull-out bolt 24 is operated to loosen the first wedge 21, and the first sleeve 21 is pulled out. Also, slightly loosen the tightening screws 18.20 of the second and third clampers 17.19.

Then, the handle 30 of the first vertical operation rod 28 is operated to rotate the rod body 29 so that the longer diameter portion thereof faces in the vertical direction, and the fixed core 13 is floated via the first conveyance roller 25.

Furthermore, the second. Third clamper 17.19 tightening screw 1
8. Loosen the 20 completely. Third clamper 17.1
9 to the outside of the fixed core insertion hole 6.

Next, the worker hooks one hand on the hanging bolt and tightens the fixed core 1.
3 is carried out from the insertion hole 6 along the first conveyance roller 25 and placed on the first conveyance plate 77. Next, lift the fixed core 13 with a chain block, and
6 is transferred to the mold storage area, and the chain hoist is removed and stored.

Even when transporting the fixed core 13, by using the first transport roller 25 and the first transport plate 77, the worker can proceed with the work easily and safely.

On the other hand, support bars 84 for the second conveyance plate are arranged on both sides of the movable die set 31, and the second conveyance plate 81 is supported on the support bar 84, and the entrance of the insertion hole 67 for the movable core is A second conveyance plate 81 is installed at.

Further, the second vertical operation rod 64 and the second conveyance roller 61 are inserted and accommodated in the respective accommodation grooves 42 provided at the bottom of the insertion hole 37 for the movable core in an overlapping manner.

Next, a hanging bolt is attached by screwing it into a screw hole 50 provided in the upper part of the movable core 45, and a chain block is attached, and the chain is slightly loosened.

Further, the tightening screw 52 of the fourth clamper 51 is loosened, and the fourth clamper 51 is moved to the outside of the insertion hole 37 for the movable core. Next, the screw hole 5 provided in the second sleeve 57
9 to attach the extraction bolt 60, operate this extraction bolt 60 to loosen the second wedge 57, and remove the second wedge.
Pull out the wedge 57. Also, 5th. 6th clamper 55
．． Slightly loosen the tightening screws 54 and 56 of 55.

Subsequently, the handle 66 of the second vertical operation rod 64 is operated to rotate the rod body 65 so that the longer diameter portion thereof faces in the vertical direction, and the movable core 45 is floated by the second conveyance roller 61.

Further, the tightening screw 5 of the first and sixth clamper 53.55
4, completely loosen 56, and 5. Sixth clamper 53.
55 to the outside of the insertion hole 37 for the movable core.

Also, locking means 71 for the block for operating the ejector bin.
Pull up the slide plate 73 constituting the ejector bin, and remove the holding member 7 from the ejector bin operation block 47.
6 to release the lock of the block 47.

Next, in the same way as when transporting the fixed core 13, the worker puts one hand on the hanging bolt and moves the movable core 45 to the second transport roller 6.
At the same time, the movable core unit 44 is carried out from the insertion hole 37 along the line 1, and the movable core unit 44 is placed on the second conveyance plate 81.

Next, the movable core unit 44 is lifted up by a chain block, the movable core unit 44 is transferred to a mold storage area, and the chain block is removed and stored.

When transporting the movable core unit 44 as well, by using the second transport roller 61 and the second transport plate 81, the worker can proceed with the work easily and safely.

Next, another fixed core prepared in advance is inserted into the fixed core insertion hole 6 and fixed according to the above-described procedure. Further, the other movable core unit is fitted into the fitting hole 72 while inserting the ejector bin operating block into the insertion hole 67 of the other movable core unit according to the above-mentioned procedure, and the movable core is inserted into the insertion hole 37 and fixed. The block for operating the ejector bin is moved by the locking means 71 into the first block. Second ejector plate 68
Join to ゜69.

Even when transporting the other fixed cores, by using the first transport rollers 25 and the first transport plate 77, the worker can easily and safely carry out the work even for large fixed cores. Furthermore, even when transporting other movable core units, by using the second transport rollers 61 and second transport plate 81, workers can easily transport even large movable core units. And the work can be carried out safely.

Therefore, the fixed core and movable core units can be freely exchanged with other ones, and a single fixed die set 1 and movable die set 31 can be used to easily mold various types of molded products. It becomes possible to do so.

Note that in the present invention, a single conveyance plate may be used in combination for conveying the fixed core and the movable core unit.

Also, 1st. The second conveyor plate is omitted and the first and second conveyor plates are omitted.
By simply using the transport rollers 25 and 61, a worker can easily and safely replace the fixed core and movable core unit.

Furthermore, the present invention is not limited to a movable core unit that combines a movable core and an ejector bin, but can also be applied to other types of movable core units.

〔Effect of the invention〕

According to the present invention described above, the fixed die set and the movable die set are provided with transport rollers for the fixed core and the movable core, respectively, so even if the fixed core and movable core are large, when they are replaced, This has the effect of allowing workers to proceed with their work easily and safely, and therefore making it possible to mold large molded products in small quantities of a wide variety by frequently exchanging the mold.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing a retaining means for connecting an ejector plate and a block for operating an ejector bin. 1...Fixed side die set 6...Insertion hole 11 for fixed core...Accommodation groove 13 for first conveyance roller...
. . . Fixed core 25 . . . First conveyance roller 28 for the fixed core.
...First vertical operation rod 31 for first conveyance roller ...Movable side die set 37 ...Insertion hole 42 for movable core ...No. Accommodation groove 44 for the second conveyance roller...
...Movable core unit 45...Movable core 46...Ejector bin 61...Second conveyance roller 64 for the movable core unit...No. Second vertical operation rod 77 for the No. 2 conveyance roller...First conveyance plate 81 for the fixed core
...Second transport plate for the movable core unit. 〆）Representative Patent Attorney Masao Ogawa - A 2tD

Claims (1)

[Claims] A molding die characterized in that a fixed die set and a movable die set are provided with conveyance rollers for a fixed core and a movable core, respectively.