JP2000229340A - Mold structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold structure not requiring at least the disassembling and re-assembling of a movable attaching plate and capable of replacing mold parts within a short time by a simple equipment. SOLUTION: A boss length determining pin 32 required in the replacement of mold parts is attached by a method wherein the boss length determing pin 32 is inserted in boss length determining pin inserting hole parts 22A, 22B from a core inserting hole part 24 through a core piece inserting hole part 31 and a pin inserting hole part 30 and a core piece 33 is inserted in the core piece inserting hole part 31 in a detachable manner and the flange part 32a of the base end of the boss length determining pin 32 is held between a first ejector plate 25 and the core piece 33 and a hole forming core pin 35 is inserted in the inner hole of a core 34, the inner hole of the core piece 33 and the inner hole of the boss length determining pin 32 to thread a stop screw 36 with the inner hole of the core 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold structure for plastic molding.

[0002]

2. Description of the Related Art As shown in FIG. 9, a conventional mold structure has a fixed mold portion 1 and a movable mold portion 2, and the fixed mold portion 1 has a fixed side mounting plate 3 and a fixed side plate 3. It has a fixed mold plate 4 and a fixed cavity forming mold 5 attached to the attachment plate 3.

[0003] The movable mold part 2 includes a movable side mounting plate 12.
A receiving plate 14 and a movable mold plate 15 attached to the movable attachment plate 12 via a spacer block 13;
And a core 18 attached to the receiving plate 14.

A first ejector plate 25 and a second ejector plate 26 connected to each other by mounting bolts 27 are accommodated in a space between the movable mounting plate 12 and the receiving plate 14. , The first and second ejector plates 25 and 26 are provided with flange portions 28a and 29 at the base ends of the return pin 28 and the ejector pin 29, respectively.
a. The return pin 28 is inserted into the return pin insertion holes 20A and 20B,
Reference numeral 9 is slidably inserted into the ejector pin insertion holes 21A and 21B.

A pin insertion hole 30 is formed in the first ejector plate 25, and the second ejector plate 2
6 are provided with pin insertion holes 40, respectively. Also,
The first and second ejector plates 25 and 26 sandwich the flange 32a at the base end of the boss length determining pin 32 and hold the boss length determining pin 32 in a detachable manner. The length determining pin 32 penetrates through the pin insertion hole 30 of the first ejector plate 25, and receives the boss length determining pin insertion holes 22A, 22B of the receiving plate 14 and the core 18.
Has been inserted.

The hole-forming core pins 35 are inserted into the pin insertion holes 44 provided in the movable mounting plate 12, the pin insertion holes 40 of the second ejector plate 26, and the inner holes of the boss length determining pins 32. The set screw 46 is screwed into the pin insertion hole 44 to prevent the core pin 35 from coming out.

A molded article 100 to be molded by using the above-configured mold structure has a boss 102 projecting from the back surface of a lid 101 as shown in FIGS. The dimension of the boss 102 of one molded article 100-1 is H1, and the dimension of the boss 102 of the other molded article 100-2 is H2 (<H1), and the dimension of the other part is H1. Is the same for both.

When the molded article 100 is molded using the mold structure, the boss length determining pin 32 whose length dimension is L1 shown in FIGS. A hole forming core pin 35 having a size M1 is used.

Then, the movable mold part 2 is raised to fit the fixed mold part 1 and the core 18 of the movable mold part 2 is inserted into the mold part of the fixed-side cavity forming mold 5 to form a cavity K therebetween. . In this case, the tip 3 of the boss length determining pin 32
2b is located at H1 from the upper surface of the core 18,
The tip of the hole forming core pin 35 protrudes above the tip 32 b of the boss length determining pin 32.

In this state, after the molten resin is injected into the cavity K, after waiting for the molten resin to cool and harden, the ejector rod 37 of the molding machine is raised, and the ejector rod 37 is connected to the movable mounting plate 12 by the rod. Insertion hole 23
After inserting the first and second ejector plates 2
The return pin 28 and the ejector pin 29 are pushed up via 5 and 26 to open the mold and to extrude the molded article 100.

When the molded product 100-1 is molded using the mold structure, the hole forming core pin 35 and the boss length determining pin 32 are shown in FIGS. 6 (1) and 6 (2). Hole forming core pin 35-1 and boss length determining pin 32-
It is necessary to exchange for 1. For this replacement, first, the set screw 46 is removed, the hole forming core pin 35 is pulled out, the mounting bolt 16 is removed, the movable side mounting plate 12 is removed, the mounting bolt 27 is removed, and the second ejector plate 26 is removed. Pull out the boss length determining pin 32.

Next, the boss length determining pin 32-1 is passed through the pin insertion hole 40 of the first ejector plate 25, and the boss length determining pin insertion hole 22A of the receiving plate 6 and the core 18 is formed. , 22B, and a second ejector plate 26 is attached to the first ejector plate 25 with attachment bolts 27.
26, the flange 32a at the base end of the boss length determining pin 32-1
-1, the boss length determining pin 32-1 is held, the movable side mounting plate 12 is mounted on the receiving plate 14 side by the mounting bolt 16, and the hole forming core pin 35-1 is held.
With the pin insertion holes 44 and 40 and the boss length determining pins 32.
-1 and the set screw 46 is inserted into the pin insertion hole 44.
Screw.

Then, the molded article 100-1 is molded by the same operation as the molding of the molded article 100.

[0014]

In the above-mentioned conventional mold structure, when molding products having different boss lengths with the same mold, the boss length which is a mold component corresponding to the boss length is required. The replacement of the determining pin 32 (32-1) and the hole forming core pin 35 (35-1) is required.
Remove the set screw 46, pull out the hole forming core pin 35,
By removing the mounting bolts 16 and the movable-side mounting plate 12, further removing the mounting bolts 27 and removing the second ejector plate 26 and extracting the boss length determining pins 32, the disassembly of the mold parts at the boss portion can be performed. After completion of the disassembly, the mold parts corresponding to the target boss length, that is, the boss length determining pin 32-1 and the hole forming core pin 3
5-1 will be incorporated again.

After disassembling the mold parts, it is necessary to reassemble the mold parts in the reverse order of the disassembly. In the above operation, in the case of a large mold structure, the movable side mounting plate 12 and the second ejector are required. When disassembling and assembling the plate 26, equipment such as a crane is required in terms of weight, a special place must be secured in terms of size, and mold components not directly related to the boss must be disassembled and disassembled. Since reassembly is required, there are many problems such as a long time required for replacement.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a simple equipment in a short time without requiring at least disassembly and re-assembly of a movable-side mounting plate. Therefore, it is an object of the present invention to provide a mold structure capable of exchanging mold parts.

[0017]

According to a first aspect of the present invention, there is provided a mold structure having a fixed mold portion having a cavity mold portion and a spacer block provided on a movable mounting plate. Movable mold part which is constructed by attaching movable mold plate and core to this receiving plate, and ejector means, and injects molten resin into cavity formed by cavity mold part and core part In the mold mold structure in which the molded article is opened by the ejector means and the molded article is released, one molded article and another molded article partially different from this one molded article are formed. In the case of molding, there is provided mold part exchange means for exchanging different mold parts used for molding different parts of one and the other molded articles without removing at least the movable side mounting plate in the movable mold part. Than it is.

With this configuration, in molding a molded product, it is possible to exchange mold parts without disassembling and reassembling at least the movable mounting plate. For this reason, even in the case of a large mold, it can be replaced without the need for equipment such as a crane, so there is no need to secure a special place,
Also, since there is no need to disassemble and assemble various bolts incorporating the movable-side mounting plate, it is possible to replace the mold parts in a short time.

According to another aspect of the present invention, there is provided a molding die structure according to the present invention, wherein different parts of one and the other molded products are different from each other. Bosses with different height dimensions in molded products,
Dimensions of specific parts such as boss tip shape, presence or absence of window in molded product outer shape, different shape, molding material name, product name, molding time,
This is a material identification mark for recycling.

With such a configuration, the dimensions of the specific portion such as bosses having different height dimensions in the molded product, the boss tip shape, the presence or absence of a window in the external shape of the molded product, a different shape, a molding material name, a product name, a molding time, and a recycling time In the molding of molded articles having different material identification marks, the mold parts can be replaced without at least disassembly of the movable-side mounting plate and reintegration work. For this reason, even large dies can be replaced without the need for crane or other equipment, so there is no need to secure a special place.In addition, disassembling and installing various bolts that incorporate the movable mounting plate Since no work is required, the mold parts can be replaced in a short time.

According to another aspect of the present invention, there is provided a mold structure for receiving a fixed mold portion having a cavity mold portion and a movable side mounting plate through a spacer block. A molded product obtained by injecting a molten resin into a cavity formed by a cavity mold portion and a core portion, comprising a movable mold portion configured by attaching a movable mold plate and a core to the receiving plate, and an ejector means. In the mold die structure in which the mold is opened by the ejector means and the molded product is released, the insertion holes for the boss length determining pins communicating with the cavities are formed in the receiving plate and the movable side mold plate of the movable mold part. Then, a nest insertion hole is provided in the movable side mounting plate, and the ejector means is constituted by connecting the second ejector plate to the first ejector plate, and the ejector means is connected to the first ejector plate. An insertion hole is provided in the second ejector plate, and a piece insertion hole is provided. A boss length determination pin is inserted from the nested insertion hole through the insertion piece insertion hole and the pin insertion hole for the boss length determination pin. Insert the insertion piece into the insertion hole, insert the insertion piece into the insertion piece insertion hole in a detachable manner, pinch the flange of the boss length determining pin with the first ejector plate and the insertion piece, and insert it into the nest insertion hole, Insert a nest to prevent the drop of the nesting piece, insert the hole forming core pin, the inner hole of the nest,
Insert into the inner hole of the insertion piece and the inner hole of the boss length determining pin,
The nested inner hole is provided with a falling-off preventing member for preventing the boss length determining pin from falling off.

With this configuration, the mounting of the boss length determining pin requiring replacement of the mold part is not performed by directly sandwiching the pin between the first ejector plate and the second ejector plate, which are the mold components, but by determining the boss length. The pin is inserted from the nested insertion hole into the boss length determining pin insertion hole via the insertion piece insertion hole and the pin insertion hole, and the insertion piece is detachably inserted into the insertion piece insertion hole, and the boss is inserted. The collar of the length determining pin,
Inserting the hole forming core pin into the inner hole of the nest, the inner hole of the insert and the inner hole of the boss length determining pin, and inserting the core pin into the inner hole of the nest. When the boss length determining pin and the hole forming core pin are replaced in order to form another molded product, the dropout prevention member is removed, the hole forming core pin is pulled out, and the nest is inserted from the nest insertion hole. , Pull out the insert from the insert insertion hole, and extract the boss length determining pin. By performing the reverse of this procedure, the boss length determining pin can be replaced with another boss length determining pin, and the hole forming core pin can be replaced with another hole forming core pin.

As described above, without disassembling the movable-side mounting plate and the eject plate, and replacing the boss length determining pin and the hole forming core pin, which are mold parts corresponding to the boss length, without reassembling. Becomes possible. This allows
Even in the case of a large mold mold structure, it can be replaced without the need for equipment such as a crane, so there is no need to secure a special place.In addition, various bolts incorporating the movable side mounting plate and Since no disassembly and installation work is required, the mold parts can be replaced in a short time.

According to a fourth aspect of the present invention, there is provided a mold die structure according to the third aspect of the present invention, wherein a diameter of a flange portion of the boss length determining pin is provided. The relationship between D, the projection dimension D1 of the insert piece, and the dimension D2 of the nest insertion hole is D2>D1> D.

With this configuration, the same function and effect as the above-described third embodiment can be obtained.

[0026]

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

FIG. 1 is an explanatory view of the structure of a mold die structure according to the present invention, FIG. 2 is an enlarged view of a portion X in FIG. 1, and FIG. 3 is a mold corresponding to a boss length in the mold die structure according to the present invention. FIG. 4 is an explanatory diagram of a configuration in which a boss length determining pin and a hole forming core pin, which are components, are removed, and FIG.

The mold structure of the present invention comprises a fixed mold part 1 and a movable mold part 2, and the fixed mold part 1 has a fixed-side mounting plate 3. Fixed side template 4
The fixed-side cavity forming die 5 is fixed, and the fixed-side cavity forming die 5 can be replaced by removing the mounting bolt 6.

A ring mounting recess 7 and an insertion hole 8 are formed in the center of the fixed side mounting plate 3, and an insertion hole 9 is formed in the center of the fixed side cavity forming die 5. I have. A locate ring 10 is mounted in the ring mounting recess 7, and a sprue bush 11 is inserted into the insertion hole 8, and the sprue bush 11 passes through the insertion hole 9 of the cavity forming die 5. The outlet side of the sprue bush 11 communicates with the cavity K.

The movable mold part 2 has a movable-side mounting plate 12. The movable-side mounting plate 12 has a receiving plate 14 and a movable-side mold plate 15 through spacer spacers 13. It is fixed by. And the movable side mold plate 15
Has a core insertion portion 17 formed therein.
7 has a core 18 inserted therein, and the core 18 is fixed to the receiving plate 14 with mounting bolts 19.

The receiving plate 14 and the movable mold plate 15 are formed with return pin insertion holes 20A, 20B and ejector pin insertion holes 21A, 21B. Are formed with boss length determining pin insertion holes 22A and 22B. The movable side mounting plate 12 has a rod insertion hole 23 located at the center thereof, and a boss length determining pin insertion hole 22A, 2B.
A nesting insertion hole 24 located on the extension of 2B is provided.

A first ejector plate 25 and a second ejector plate 26 are accommodated in a space between the movable mounting plate 12 and the receiving plate 14, and the first and second ejector plates 26 are accommodated therein. The first and second ejector plates 25 and 26 are connected to each other by mounting bolts 27.
Ejector plates 25 and 26 are return pins 28
And the flange 2 at the base end of each of the ejector pins 29
8a and 29a are sandwiched, and these constitute the ejector means. The return pin 28 is inserted into the return pin insertion holes 20A and 20B,
Reference numeral 9 is slidably inserted into the ejector pin insertion holes 21A and 21B.

The first ejector plate 25 has a pin insertion hole 30 located on the extension of the boss length determining pin insertion holes 22A and 22B, and the second ejector plate 9 has a boss length. 22A of insertion holes for locating pins,
Insertion piece insertion holes 31 located on the extension of 22B are provided.

The boss length determining pin 32 has a flange 32a at its base end and is a hollow body. The boss length determining pin 32 is attached to the boss length determining pin 32.
Is inserted from the nested insertion hole 24 into the boss length determining pin insertion holes 22A and 22B of the receiving plate 6 and the core 12 via the insertion piece insertion hole 31 and the pin insertion hole 30. The insertion piece 33 is detachably inserted into the hole 31, and the flange 32 a of the boss length determining pin 32 is sandwiched between the first ejector plate 25 and the insertion piece 33.

A nest 34 is inserted into the nest insertion hole 24 of the movable mounting plate 12. Boss part 1
The hole forming core pin 35 for forming a hole (purpose of preventing sink marks and preparing a hole for a screw) is formed inside the nest 34,
The hole forming core pin 35 is inserted into the inner hole of the insert piece 33 and the inner hole of the boss length determining pin 32, and is screwed into the inner hole of the insert 34 to prevent the hole forming core pin 35 from coming out. Has been prevented.

In this case, as shown in FIG. 2, the relationship among the diameter D of the flange 32a of the boss length determining pin 32, the projected dimension D1 of the insert piece 33, and the dimension D2 of the insert insert hole 24 is D
2>D1> D.

The boss length determining pin 32 has a length L1 as shown in FIG. 5 (1) and a boss length determining pin 32 shown in FIG. 6 (1).
As shown in the figure, there is a case in which the length is L2 (> L1), and the length of the hole forming core pin 35 corresponding to the boss length determining pin 32 having the length L1 is M1, and the length is The length dimension of the hole forming core pin 35-1 corresponding to the boss length determining pin 32-1 of L2 is M2 (> M1).

Then, the boss length determining pin 32 is inserted from the nested insertion hole 24 into the insertion piece insertion hole 31 and the pin insertion hole 3.
0, boss length determining pin insertion holes 22A, 22B
And the insertion piece 33 is removably inserted into the insertion piece insertion hole 31, and the flange 32a at the base end of the boss length determination pin 32 is inserted.
Is inserted between the first ejector plate 25 and the insert piece 33, and the hole forming core pin 35 is inserted into the inner hole of the insert 34, the inner hole of the insert piece 33, and the inner hole of the boss length determining pin 32. The mold part replacing means is constituted by screwing the set screw 36 into the inner hole of the mold part 34.

Next, the molded products 100, 1 shown in FIGS.
The molding of 00-1 will be described.

The molded articles 100 and 100-1 molded using the mold structure are shown in FIGS. 7 and 8 which have already been described.

When the molded article 100 is molded using the mold structure, the movable mold 2 is raised to fit the fixed mold 1 and the core 18 of the movable mold 2 is fixed to the fixed cavity. It is inserted into the mold part of the forming die 5 to form a cavity K therebetween. In this case, the boss length determining pin 32 having the length L1 and the hole forming core pin 35 having the length M1 are provided.
Are used, and the tip 3 of the boss length determining pin 32 is used.
2b is located at H1 from the upper surface of the core 18,
The tip of the hole forming core pin 35 protrudes above the tip 32 b of the boss length determining pin 32.

In this state, after the molten resin is injected from the sprue bush 11 into the cavity K, the cooling and hardening of the molten resin is waited, and then the ejector rod 37 of the molding machine is raised, and the ejector rod 37 is mounted on the movable side. After being inserted into the rod insertion hole 23 of the plate 12, the return pin 28 and the ejector pin 29 are pushed up via the first and second ejector plates 25 and 26 to open the mold and push out the molded article 100.

When the molded product 100-1 is molded using the mold structure, the set screw 36 screwed into the inner hole of the insert 34 is removed, the hole forming core pin 35 is extracted, and the insert is inserted. The insert 34 is extracted from the hole 24, the insert 33 is extracted from the insert insertion hole 31,
Pull out the boss length determining pin 32.

Then, the boss length determining pin 32-1 having the length L2 is inserted from the nesting insertion hole 24 into the insertion piece insertion hole 3.
1. Receiving plate 14 and core 18 via pin insertion hole 30
Of the boss length determining pins 32-1a of the boss length determining pins 32-1. The nest 3 is sandwiched between the first ejector plate 25 and the insert piece 33, and the nest 3 is inserted into the nest insertion hole 24 of the movable-side mounting plate 12.
4 and the hole forming core pin 35-1 is inserted into the inner hole of the insert 34, the inner hole of the insert 33, and the boss length determining pin 32-1.
The set screw 36 is screwed into the inner hole of the insert 34.

Then, the movable mold part 2 is raised to fit the fixed mold part 1 and the core 18 of the movable mold part 2 is inserted into the mold part of the fixed-side cavity forming mold 4 to form a cavity K therebetween. . In this case, the tip 32a-1 of the boss length determining pin 32-1 is located at H2 from the upper surface of the core 18, and the tip of the hole forming core pin 35-1 is located at the boss length determining pin 32-1. The first protrusion 32b-1 protrudes upward.

In this state, after the molten resin is injected from the sprue bush 11 into the cavity K, after waiting for the molten resin to cool and harden, the ejector rod 37 of the molding machine is raised and the ejector rod 37 is mounted on the movable side. After being inserted into the rod insertion hole 23 of the plate 12, the return pin 28 and the ejector pin 29 are pushed up via the first and second ejector plates 25 and 26 to open the mold and to extrude the molded product 100-1. .

In the above embodiment of the present invention,
The mounting of the boss length determining pin 32 requiring the replacement of the mold parts is not performed by directly sandwiching the boss length determining pin 32 between the first ejector plate 25 and the second ejector plate 26 as the mold components. The nesting insertion hole 24 is inserted into the boss length determining pin insertion holes 22A and 22B via the insertion piece insertion hole 31 and the pin insertion hole 30, and the insertion piece 33 is detachable from the insertion piece insertion hole 31. And the flange 32a at the base end of the boss length determining pin 32 is sandwiched between the first ejector plate 25 and the insert 33,
The hole forming core pin 35 is inserted into the inner hole of the insert 34, the inner hole of the insert 33, and the inner hole of the boss length determining pin 32, and the set screw 36 is screwed into the inner hole of the insert 34. Therefore, when the boss length determining pin 32-1 and the hole forming core pin 35-1 are replaced in order to form another molded product 100-1, the set screw 36 is removed, and the hole forming core pin 35 is pulled out. The nest 34 is extracted from the nest insertion hole 24, the nest piece 33 is extracted from the nest piece insertion hole 31, and the boss length determining pin 32 is extracted. By performing the reverse of this procedure, the boss length determining pin 32 can be replaced with the boss length determining pin 32-1 and the hole forming core pin 35 can be replaced with the hole forming core pin 35-1.

As described above, without disassembling and reassembling the movable mounting plate 12 and the second eject plate 26, the boss length determining pins 32, 32, which are mold parts corresponding to the boss length, are not required. -1 and hole-forming core pins 35, 35-1
Replacement work becomes possible. As a result, even in the case of a large mold structure, it can be replaced without the need for equipment such as a crane, so that it is not necessary to secure a special place.

Also, the mounting bolts 16 and 2 incorporating the movable side mounting plate 12 and the second edge plate 26 are provided.
Since the disassembling and assembling work of the mold 7 does not occur, the mold parts can be replaced in a short time.

In the above-described embodiment of the present invention, when the lengths H1 and H2 of the boss portions 102 are different in the molding of the molded products 100 and 100-1, the length of the boss portions is changed. The boss length determining pins 32, 3 which are the corresponding mold parts
Although the replacement of the 2-1 and the hole-forming core pins 35 and 35-1 has been described, the present invention relates to a shape of a specific portion such as a boss tip shape, presence or absence of a window in a molded product outer shape, a different shape, a molding material name, and a product name. It can also be used for exchanging mold parts corresponding to differences in molding timing, material identification marks at the time of recycling, and the like.

[0051]

As described above, according to the mold structure of the present invention, at the time of molding, at least the dismounting of the movable-side mounting plate and the replacement of the mold parts are possible without the re-installation work. Becomes For this reason, even large dies can be replaced without the need for crane or other equipment, so there is no need to secure a special place.In addition, disassembling and installing various bolts that incorporate the movable mounting plate Since no work is required, the mold parts can be replaced in a short time.

Further, according to the mold structure of the present invention, the dimensions of specific portions, such as bosses having different height dimensions in the molded product, the boss tip shape, the presence or absence of a window in the external shape of the molded product, and different shapes and molding materials are used. In the molding of molded products having different names, product names, molding times, and material identification marks at the time of recycling, it is possible to replace mold parts without disassembling and reassembling at least the movable mounting plate. For this reason, even in the case of a large mold, it can be replaced without the need for equipment such as a crane, so there is no need to secure a special place,
Also, since there is no need to disassemble and assemble various bolts incorporating the movable-side mounting plate, it is possible to replace the mold parts in a short time.

According to the mold structure of the present invention, the mounting of the boss length determining pin requiring replacement of the mold component is directly performed by the first ejector plate and the second eject plate which are the mold components. Instead of inserting it, insert the boss length determining pin from the nesting insertion hole into the insertion piece insertion hole,
Insert the insertion piece into the boss length determination pin insertion hole through the pin insertion hole, insert the insertion piece into the insertion piece insertion hole in a detachable manner, and fit the flange at the base end of the boss length determination pin into the Insert the core pin into the inner hole of the nest, the inner hole of the nest, and the inner hole of the boss length determining pin to prevent the core pin from dropping out. When the boss length determining pin and the hole forming core pin are exchanged in order to form another molded product because the members are provided,
After removing the drop-out preventing member, the hole forming core pin is extracted, the insert is extracted from the insert insertion hole, the insert piece is extracted from the insert insert hole, and the boss length determining pin is extracted.
By performing the reverse of this procedure, the boss length determining pin can be replaced with another boss length determining pin, and the hole forming core pin can be replaced with another hole forming core pin.

As described above, without disassembling and reassembling the movable side mounting plate and the second eject coo plate,
The boss length determining pin and the hole forming core pin, which are mold parts corresponding to the boss length, can be replaced. As a result, even in the case of a large mold, it can be replaced without using equipment such as a crane, so that it is not necessary to secure a special place.

Further, since there is no need to disassemble and assemble the mounting bolts incorporating the movable side mounting plate or the second edge plate, the mold parts can be replaced in a short time. Further, since equipment such as a crane is not required, there is no need for knowledge other than about the mold and the molding, and the effect is large such that parts can be replaced.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view of a mold structure according to the present invention.

FIG. 2 is an enlarged view of a portion X in FIG.

FIG. 3 is an explanatory diagram of a state in which a boss length determining pin and a hole forming core pin, which are mold parts corresponding to the boss length, have been removed from the mold die structure according to the present invention.

FIG. 4 is a view as seen from the Y direction in FIG. 3;

FIG. 5A is a longitudinal sectional view of a boss length determining pin.
(2) is a front view of the hole forming core pin.

FIG. 6A is a longitudinal sectional view of another boss length determining pin. (2) is a front view of another hole forming core pin.

FIG. 7A is a plan view of a molded product. FIG. 2B is a sectional view taken along line Z1-Z1 in FIG. (3) is an inner view of the molded product.

FIG. 8 (1) is a plan view of another molded product. (2) is a cross-sectional view along the line Z2-Z2 of (1). (3) is an inside view of another molded article.

FIG. 9 is a configuration explanatory view of a conventional mold structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fixed type | mold part 2 Movable type | mold 3 Fixed side mounting plate 4 Fixed side type plate 10 Locating ring 11 Sprue bush 12 Movable side mounting plate 13 Spacer-block 14 Receiving plate 15 Moving side type plate 16 Mounting bolt 18 Core 25 First Ejector plate (ejector means) 26 Second edge plate (ejector means) 27 Mounting bolt 28 Return pin (ejector means) 29 Ejector pin (ejector means) 31 Insertion piece (mold part exchange means) 32 Boss length determining pin (Mold part replacement means) 32-1 Boss length determining pin (Mould part replacement means) 32a Flange 34 Nesting (Mould part replacement means) 35 Hole forming core pin (Mold part replacement means) 35-1 Hole forming core pin (Mould part) Replacement means) 36 Set screw (Die part replacement means) (Prevention member) K Bitei

Claims (4)

[Claims] 1. A fixed mold part having a cavity mold part, a movable mold part comprising a receiving plate attached to a movable mounting plate via a spacer block, and a movable mold plate and a core attached to the receiving plate. And a mold for injecting a molten resin into a cavity formed by the cavity mold portion and the core portion to form a molded product, opening the molded product by the ejector device, and releasing the molded product. In the mold structure, when molding one molded product and another molded product partially different from the one molded product, different molds are used for molding different portions of the one and other molded products. A mold die structure comprising a mold part exchanging means for exchanging parts without removing at least the movable side mounting plate in the movable mold part. 2. The method according to claim 1, wherein the different portions of the one and the other molded products have different heights or different shapes such as bosses having different height dimensions, boss tip shapes, presence or absence of a window in the molded product outer shape. 2. The mold structure according to claim 1, wherein the molding material name, product name, molding time, and material identification mark at the time of recycling are used. 3. A fixed mold portion having a cavity mold portion, a movable mold portion comprising a receiving plate attached to a movable mounting plate via a spacer block, and a movable mold plate and a core attached to the receiving plate. And a mold for injecting a molten resin into a cavity formed by the cavity mold portion and the core portion to form a molded product, opening the molded product by the ejector device, and releasing the molded product. In the mold structure, an insertion hole for a boss length determining pin communicating with the cavity is formed in the receiving plate and the movable mold plate of the movable mold portion, and a nested insertion hole is provided in the movable mounting plate. The ejector means is configured by connecting a second ejector plate to a first ejector plate, and a pin insertion hole is provided in the first ejector plate, and the second ejector plate is connected to the second ejector plate. And a boss length determining pin is inserted into the boss length determining pin from the nested insertion hole through the nesting hole and the pin insertion hole. Inserting the insertion piece into the insertion piece insertion hole portion in a detachable manner, sandwiching the flange portion of the boss length determining pin between the first ejector plate and the insertion piece, and inserting the insertion piece into the nest insertion hole portion. Inserting a nest for preventing the insert from falling off, and inserting a hole-forming core pin into the inner hole of the insert, the inner hole of the insert, and the inner hole of the boss length determining pin, and into the inner hole of the insert. A mold die structure comprising a falling-off preventing member for preventing the boss length determining pin from falling off. 4. A diameter D of a flange portion of the boss length determining pin.
4. The mold die structure according to claim 3, wherein the relationship between the projection dimension D1 of the insert piece and the dimension D2 of the nest insertion hole portion is D2>D1> D.