JPH08244103A - Molding apparatus and retainer mold attaching method thereof - Google Patents

Abstract

PURPOSE: To easily perform retainer mold attaching work while certainly performing the positioning of a retainer mold and to shorten the working hours. CONSTITUTION: An L-shaped guide rail 60 is attached to the rear surface of a rotary plate and a neck mold support plate 26 to which a neck mold 24 is fixed is allowed to slide and move to be supported on a guide rail 60 to align the positioning hole 62 formed to the rotary plate with the positioning notch part 66 formed to the neck mold support plate 26 and, after a positioning pin 68 is inserted in the notch part 66 and the positioning hole 62, a falling preventing member 70 is attached to the rear surface of the guide rail 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus and a holding die mounting method thereof, and more particularly to a molding apparatus which conveys a molded product to a plurality of molding sections by a holding die mounted on a rotary conveying member and a holding die mounting method thereof. Regarding

[0002]

2. Description of the Related Art Conventionally, for example, a rotary plate is used as a rotary conveying member, and a molded product is rotationally conveyed while a neck portion, which is a holding mold attached to the lower surface of the rotary plate, holds the neck portion of the molded product. There is known a molding apparatus that intermittently conveys a molded product to a plurality of molding parts to perform one cycle of molding.

In such a molding apparatus, Japanese Unexamined Patent Application Publication No.
As disclosed in JP-A-305002, a neck mold composed of a split mold is fixed to a neck mold support plate which is a holding mold support plate composed of a dividing plate, and the neck mold support plate is urged by an urging means. The neck mold is biased in the mold closing direction, and both ends of the neck mold support plate are supported by guide rails provided on the lower surface of the rotary plate.

When mounting the neck mold, the positioning pin formed in advance on the lower surface of the rotary plate is engaged with the positioning hole formed in the opposing mating surface of the neck support plate to position the neck mold. I am trying.

In this case, the neck type supporting plate is moved upward from below in accordance with the positioning pin fixed to the rotary plate, and the positioning pin is passed through the positioning hole of the neck type supporting plate, and then the neck type supporting plate. Both ends were fixed with guide rails.

As described above, the neck die support plate must be lifted while being supported from below, and the guide rail must be attached in the raised state. Therefore, the neck die support plate is placed on the injection cavity mold, and the injection cavity is carefully observed. The mold is raised, the neck mold support plate is brought into contact with the lower surface of the rotary plate, and the guide rail is attached while maintaining this state.

[0007]

In the conventional molding apparatus described above, the positioning pin formed in advance on the rotary plate is engaged with the positioning hole formed in the facing mating surface of the neck type support plate. Since the mold is positioned, the neck mold support plate must be lifted while supporting it from below, and the guide rail must be installed while maintaining the lifted position. There is a problem that the neck type support plate must be brought in and work must be performed in a narrow space below the rotary plate, resulting in poor work efficiency and a long work time.

The present invention has been made by paying attention to the above-mentioned conventional problems, and an object of the present invention is to easily perform holding work of the holding mold while surely positioning the holding mold, and to shorten the working time. And a holding mold mounting method thereof.

[0009]

In order to achieve the above object, the first invention is a molding apparatus for conveying a molded article to a plurality of molding sections by means of a rotary conveying member, which comprises a split mold for holding the molded article. A holding die, and a holding die support plate configured by a split plate for fixing each of the split die holding dies, and a biasing member for urging the holding die in a mold closing direction,
A pair of guide rails attached to the rotary transport member and slidably supporting both ends of the holding die support plate in the mold opening / closing direction of the holding die; positioning holes formed in the rotary transport member; and the holding die. A positioning member that is inserted into a positioning notch formed on the contact surface of the split plate of the support plate; and a fixing member that fixes the positioning member,
It is characterized by having.

In a second aspect based on the first aspect, the positioning hole is formed at a position corresponding to the vicinity of both ends of the holding type supporting plate of the rotary conveying member, and the notches for positioning are both ends of the holding type supporting plate. It is characterized in that it is formed near the part.

A third invention is characterized in that, in the first invention, the fixing member is a drop preventing member which is fixed to the guide rail and receives the lower end of the positioning member.

A fourth invention is characterized in that, in the first invention, the rotary conveying member is constituted by a rotary plate.

A fifth invention is characterized in that, in the first invention, a plurality of holding dies are attached to the holding die support plate. A sixth invention is the same as the first invention,
The holding mold is composed of a neck mold for holding a neck portion of a molded product, and is characterized by molding a container made of synthetic resin.

A seventh invention is characterized in that, in the sixth invention, the molding section has at least an injection molding section and a stretch blow molding section, and a synthetic resin container is molded by injection stretch blow molding. .

In an eighth aspect based on the sixth aspect, the molding section has at least a heat treatment section for improving the heat resistance of the container and a stretch blow molding section, and a heat-resistant container made of synthetic resin by stretch blow molding. It is characterized by molding.

According to a ninth aspect of the present invention, in a method of attaching a holding die in a molding apparatus that conveys a molded product held in a holding die to a plurality of molding parts by rotationally driving a rotary conveying member, the holding die is composed of a dividing plate, and each of the divided pieces is divided. A step of supporting a holding die support plate, in which a holding die made of a split die is fixed, on the guide rail by slidingly moving the holding die support plate from the outside of the molding device toward the center along the guide rail attached to the lower surface of the rotary conveyance member. A positioning hole formed in the rotary conveyance member,
A step of performing alignment with a notch for positioning formed on the contact surface of the split plate of the holding type support plate; and a holding type support plate and holding by inserting a positioning member into the notch and the positioning hole. The process of positioning the mold and then
Attaching a fall prevention member to the lower surface of the guide rail to receive the lower end of the positioning member to prevent the positioning member from falling.

[0017]

In the first aspect of the invention, the positioning member is provided in the positioning hole formed in the rotary conveying member and the positioning notch formed in the split plate contact surface of the holding type support plate. By inserting and holding the positioning member with the fixing member, the holding die can be positioned reliably,
Moreover, the fixing member can be attached after the holding type supporting plate is slid and supported on the guide rail, and the positioning member does not interfere when the holding type supporting plate is attached to the guide rail. It is possible to simplify the procedure of and improve the work efficiency of the installation.

According to the second aspect of the present invention, the holding-type support plate can be accurately positioned by aligning the positioning hole and the notch for positioning near both ends of the holding-type support plate. it can.

In the third aspect of the invention, the positioning member can be prevented from falling by simply fixing the fall prevention member as the fixing member to the guide rail, and the structure is simple and the mounting is easy. You can

According to a fourth aspect of the present invention, in a molding apparatus having a rotary plate as a rotary transfer member, a holding die supporting plate having a holding die fixed to the rotary plate can be surely positioned, and a mounting state with good work efficiency is provided. Can be secured.

According to the fifth aspect of the present invention, by positioning the holding die support plate by the positioning member, a plurality of holding dies can be surely positioned at one time, and the work efficiency of mounting them can be improved. You can

According to the sixth aspect of the invention, the holding die is constituted by a neck die for holding the neck portion of the molded product, and the neck die is surely positioned in a molding apparatus for molding a synthetic resin container. In addition, the work efficiency of the attachment can be improved.

According to the seventh aspect of the invention, in the injection stretch blow molding apparatus for molding a container made of synthetic resin, the neck mold can be reliably positioned, and the mounting work efficiency thereof can be improved. .

According to the eighth aspect of the invention, in the molding apparatus for molding the heat-resistant container made of synthetic resin, the neck mold can be positioned reliably, and the mounting work efficiency thereof can be improved.

According to the ninth aspect of the present invention, with the guide rail attached to the rotary conveying member, the holding die support plate with the holding die fixed is slid from the outside of the molding device toward the center to hold the holding die. The mold support plate can be supported by the guide rails, and it is not necessary to constantly hold the holding mold support plate in a lifted state when attaching the holding mold support plate. Moreover, the holding mold support plate has a narrow space below the rotating plate. Since it is not necessary to bring it into the container and perform the work, it can be mounted by sliding it from the side of the molding apparatus, so that the work efficiency of the mounting is improved and the working time can be shortened.

When positioning the holding die, the holding die support plate is supported by the guide rails and the positioning hole formed in the rotary conveying member and the notch for positioning formed in the holding die support plate. Positioning is performed, the positioning member is inserted into the positioning hole and the notch, and the lower end of the positioning member is received by the fall prevention member, so that the holding die can be easily positioned.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 5 are views showing a blow molding machine for molding a heat-resistant container according to an embodiment of the present invention. 3. FIG. 3 is an exploded assembly view showing a state where the neck type support plate as the holding type support plate is disassembled and its mounting state is shown.

In this blow molding machine, as shown in FIGS. 4 and 5, the upper end of a tie rod 12 standing on the molding machine base 10 is connected and fixed by an upper fixing plate 14, and below the upper fixing plate 14. The upper base 16 is slidably supported by the tie rods 12, and the upper base 16 can be moved up and down by a drive cylinder 18 which is a lifting drive device connected to the center of the lower surface of the upper base 16.

A rotary plate 20 as a rotary transfer member is intermittently rotated at a predetermined angle (for example, 120 degrees) on the lower surface of the upper base 16 by a rotary actuator 22 which is a rotary driving device mounted on the upper base 16. It is possible.

Therefore, the rotary plate 20 is moved up and down as the upper base 16 is moved up and down, and is rotated on the lower surface of the upper base 16.

As shown in FIG. 1 to FIG. 3 and FIG. 5, the lower surface of the rotary plate 20 is provided with a split plate that supports the neck molds 24, 24, which are a plurality of holding molds composed of split molds, so as to be opened and closed. Neck-type support plates 26 and 2 which are configured retention-type support plates
6 are arranged at three positions with a distance of 120 degrees from the center, and a plurality of molded products, for example, a container-shaped intermediate molded product 28a, with the neck portions supported by the plurality of neck molds 24, 24, or After the heat treatment, the intermediate molded product 28b (see FIG. 5) or the product 30 (see FIG. 2), which is a container, is intermittently driven at intervals of 120 degrees with the rotation of the rotating plate 20 and can be stopped at three positions. Has been done.

The neck die support plates 26, 26 are in a state of urging the neck die 24 in the die closing direction by the urging member 54.

The biasing member 54 is composed of the neck type support plates 26, 2
6 that penetrates 6 in the width direction, and the neck type support plates 26, 2 attached to both ends of the rod 56.
6 and the coil springs 58 and 58 for pressing the side surfaces of the neck molds 6, and by pressing the neck mold support plates 26, 26 in the separating direction against the biasing force of the coil springs 58, 58. The mold can be opened.

The neck-type support plates 26, 26 are attached to the lower surface of the rotary plate 20 at opposite ends of the neck-type support plates 26, 26 with their projecting sides facing each other.
Both ends are neck type 2 due to the character-shaped guide rail 60
It is in a state of being slidably supported in the mold opening / closing directions of 4, 24.

Further, the neck type support plate 26 of the rotary plate 20
Positioning holes 62 are formed at positions corresponding to the positions near both ends of the partition plate, and notches 66, 66 for positioning are formed on the contact surfaces 64, 64 of the split plate near the ends of the neck-type support plate 26 corresponding to the positioning holes 62. And the positioning hole 6 is formed.
The positioning pin 68, which is a positioning member, is inserted from below into the notch 2 and the notch 66, and the lower end of the positioning pin 68 is received by the fall prevention member 70 mounted and fixed to the lower surface of the guide rail 60. 68 is prevented from falling.

As described above, the positioning pins 68 can be used to ensure the positioning of the neck molds 24 and 24, and the positioning pins 68 can be retrofitted, so that the work efficiency of mounting can be improved. It is like this.

Further, along the rotation conveyance locus of the molded product held by the neck molds 24, 24 by the rotary plate 20, the receiving, taking-out part 32, the heat treatment part 34 and the blow molding part 36 are arranged at the respective stop positions. The heat-resistant container can be molded.

The receiving / extracting section 32 receives the intermediate molded product 28a blow-molded in advance by the neck molds 24, 24, and the intermediate molded product 28a received by the neck molds 24, 24 is processed by the heat treatment section 34 and blow molding. The product 30 is taken out from the neck molds 24, 24 when the molded product 30 is conveyed through the portion 36. The neck mold support plates 26, 26 are opened on the upper base 16 to open the neck molds. A mold opening mechanism 38 for opening the molds 24, 24 is provided. (See Figure 4).

The heat treatment section 34 is disposed at a position where the rotary plate 22 rotates 120 degrees and stops while the intermediate molded product 28a received by the receiving / extracting section 32 is held by the neck molds 24, 24. The heat treatment is applied to the intermediate molded product 28a received by the take-out section 32 to a temperature for promoting crystallization, and as shown in FIG. 5 on the molding machine table 10 located below the rotary plate 20. Further, a heat treatment die 40 for performing heat treatment is arranged. Also,
On the upper substrate 16 in the heat treatment section 34, the heat treatment core die 42 is moved up and down by the core driving cylinder 44 and inserted into the neck die 24.

In the heat treatment section 34, the size of the intermediate molded product 28a before the heat treatment is slightly larger than that of the final product 30. By applying the heat treatment to the intermediate molded product 28a, the heat treatment is performed after the heat treatment. Intermediate molded product 2
Heat treatment is applied so that the size of 8b is almost the same as or slightly smaller than that of the final product 30.

The blow molding section 36 is disposed at a position where the rotary plate 20 is rotated by 120 degrees and stopped while the molded product heat-treated by the heat treatment section 34 is held by the neck molds 24, 24. On the molding machine table 10 located below the rotary plate 20, a pair of blow cavity molds 46, 46 (see FIG. 5) configured by split molds can be clamped by the blow mold clamping device 48 and the molds can be opened and closed. It is installed in.

On the upper base 16 in the blow molding section 36, a blow core die 50 can be moved up and down by a blow core elevating and lowering drive device 52, and the blow core die 50 penetrates the upper base 16 and the rotary plate 20 to make the blow core die 50 the neck die 24. , 2
4, the blow core die 50 can be retracted above the position of the rotary plate 20 when the rotary plate 20 is driven to rotate.

Then, with the blow core mold 50 inserted in the intermediate molded product held by the neck molds 24, 24, the blow cavity molds 46, 46 are clamped by the blow mold clamping device 48, and the intermediate molding is performed by the blow core mold 50. Blow molding is performed by introducing blow air into the product to form the heat-treated intermediate molded product 28b in the shape of the product 30.

Next, a method of attaching the neck mold in the blow molding apparatus will be described.

First, a pair of guide rails 6 are provided at both ends of the mounting position of the neck type supporting plate 26 on the lower surface of the rotary plate 20.
0 is attached and fixed. In this case, the guide rail 60 is formed in an L shape, and is attached with its projecting sides facing each other.

Next, at the receiving and taking-out portion 32 position, both ends of the neck type supporting plates 26, 26 are placed on the pair of guide rails 60 attached to the lower surface of the rotary plate 20, and the guide rail 60 is placed on the guide rail 60. Along the outside of the molding device toward the center by sliding the neck mold support plate 26,
26 is supported by the guide rail 60. In this case, the neck-type support plates 26, 26 fix the neck dies 24, 24, which are split dies, to the respective division plates and are integrated by the urging member 54, and the neck dies 24, 24 are closed in the die closing direction. It is supported by the guide rail 60 while being biased to.

When the neck type support plates 26, 26 are attached to the guide rail 60, the neck type support plates 26, 26
By sliding 26 along the guide rail 60 from the outside of the molding apparatus without bringing it into the narrow space below the rotary plate 20, it can be easily supported on the guide rail 60. Therefore, if the neck-type support plates 26, 26 can be lifted by one worker, the worker only has to lift and slide the guide rails 60 along the guide rail 60, and one worker cannot lift them. If it is such a neck type support plate 26,26, mount the neck type support plate 26,26 on a forklift or the like, and
If the guide rail 60 is inserted after being lifted to the height of 0, the attachment can be performed efficiently.

Next, with the neck die support plates 26, 26 supported by the guide rails 60, positioning holes 62 formed at positions corresponding to both ends of the neck die support plates 26, 26 of the rotary plate 20 and the neck die. Positioning is performed with the positioning notches 66, 66 formed on the contact surfaces 64, 64 near both ends of the support plates 26, 26. in this case,
Since the neck type support plates 26, 26 are in a state of being supported by the guide rail 60, the neck type support plates 26, 2
It is only necessary to slide 6 on the guide rail 60 to perform the alignment, and it is not necessary to maintain the neck type support plates 26, 26 in a lifted state, and the alignment can be efficiently performed.

Next, the positioning hole 62 and the notch 66,
With the 66 positioned, the cutouts 66, 66
And the positioning pins 68 are inserted into the positioning holes 62 from below, and the neck mold supporting plates 26, 26 and the neck molds 24,
24 positioning is performed.

Then, the positioning pin 68 is provided with the notch 6
After passing through 6, 66 and the positioning hole 62, a fall prevention member 70 is attached to the lower surface of the guide rail 60 to receive the lower end of the positioning pin 68 and prevent the positioning pin 68 from falling.

After supporting the neck die supporting plates 26, 26 on the guide rail 60 in this manner, the neck die supporting plates 26, 26 and the neck die 24, 2 by the positioning pins 68 are provided.
By performing the positioning of No. 4, it is not necessary to hold the neck type supporting plates 26, 26 in a lifted state when positioning the neck type supporting plate 26, and the mounting efficiency can be improved.

The present invention is not limited to the above embodiment, but various modifications can be made within the scope of the gist of the present invention.

For example, in the above-mentioned embodiment, the case where the molded product is conveyed by the neck mold for holding the neck portion of the molded product to form the heat-resistant container has been described, but the present invention is not limited to this example, and containers other than the heat-resistant container are described. The present invention can be applied to a molding machine for molding, and also to a molding machine for molding a molded product other than a container.

Further, the molded product is injection-molded by a rotary plate,
The present invention can also be applied to an injection stretch blow molding machine which carries out one cycle of the molding process by being rotationally conveyed to the temperature control section, the stretch blow molding section and the product unloading section.

[0056]

According to the first aspect of the invention, the positioning member is inserted through the positioning hole formed in the rotary conveyance member and the positioning notch formed in the split plate contact surface of the holding type support plate. By receiving the positioning member with the fixing member, the holding die can be positioned reliably, and the fixing member can be attached after the holding die supporting plate is slid to be supported by the guide rail. The positioning member does not interfere with the attachment of the holding type support plate to the guide rail, and the attachment procedure can be simplified to improve the attachment work efficiency.

According to the second aspect of the present invention, by positioning the positioning hole and the notch for positioning near both ends of the holding type supporting plate, the holding type supporting plate can be accurately positioned. There is an effect.

According to the third aspect of the invention, the positioning member can be prevented from falling only by fixing the drop preventing member as the fixing member to the guide rail, and the structure is simple and the mounting is easy. The effect is that you can do it.

According to the fourth aspect of the present invention, in the molding apparatus having the rotary plate as the rotary conveying member, the holding die supporting plate having the holding die fixed to the rotary plate can be surely positioned, and the mounting state with good work efficiency can be obtained. The effect is that it can be secured.

According to the fifth aspect of the present invention, by positioning the holding die support plate by the positioning member, a plurality of holding dies can be surely positioned at one time, and the work efficiency of mounting the holding dies can be improved. The effect is that you can do it.

According to the sixth aspect of the invention, the holding die is constituted by the neck die for holding the neck portion of the molded article, and the neck die is surely positioned in the molding apparatus for molding the container made of synthetic resin. In addition, there is an effect that the work efficiency of the mounting can be improved.

According to the seventh aspect of the invention, in the injection stretch blow molding apparatus for molding a synthetic resin container, the neck mold can be reliably positioned and the mounting work efficiency thereof can be improved. effective.

According to the eighth aspect of the invention, in the molding apparatus for molding the heat-resistant container made of synthetic resin, the neck mold can be reliably positioned and the efficiency of its mounting work can be improved. There is.

According to the ninth aspect of the present invention, the holding die supporting plate, to which the holding die is fixed, is slid from the outside of the molding device toward the center while the guide rail is attached to the rotary conveying member. The support plate can be supported by the guide rail, and it is not necessary to constantly hold the holding type support plate in a lifted state when attaching the holding type support plate.
There is no need to bring the holding type support plate into the narrow space below the rotating plate to perform work, and it can be mounted by sliding it from the side of the molding device, improving the work efficiency of the installation and shortening the work time. effective.

When positioning the holding die, the holding die support plate is supported by the guide rails and the positioning hole formed in the rotary conveying member and the notch for positioning formed in the holding die support plate. Positioning is performed, a positioning member is inserted into the positioning hole and the notch, and the lower end of the positioning member is received by the fall prevention member, so that the holding mold can be easily positioned.

[0066]

[Brief description of drawings]

FIG. 1 is a bottom view of a neck mold support plate in a blow molding device for molding a heat-resistant container according to an embodiment of the present invention, as viewed from a lower side of a rotary plate.

FIG. 2 is a vertical cross-sectional view showing a mounted state of the neck type support plate of FIG.

FIG. 3 is an exploded view showing an attached state of the neck type support plate of FIGS. 1 and 2.

FIG. 4 is a plan view showing a blow molding apparatus of this embodiment.

5 is a vertical cross-sectional view of the blow molding device taken along line VV of FIG.

[Explanation of symbols]

 20 Rotating Plate 24 Neck Type 26 Neck Type Support Plate 54 Biasing Member 56 Rod 58 Coil Spring 60 Guide Rail 62 Positioning Hole 64 Abutment Surface 66 Notch 68 Positioning Pin 70 Fall Prevention Member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuyuki Yokobayashi 4586 Ko Komoro City Nagano Prefecture 3 Nissei ASB Machinery Co., Ltd.

Claims (9)

[Claims] 1. A molding apparatus that conveys a molded product to a plurality of molding units by a rotary transport member, and a holding mold configured by a split mold that holds the molded product and a split that fixes the holding mold of the split mold. Composed of plates,
And a holding die support plate for urging the holding die in a mold closing direction by an urging member, and both ends of the holding die support plate attached to the rotary conveyance member so as to be slidable in the die opening / closing direction of the holding die. A pair of guide rails for supporting, a positioning hole formed in the rotary transport member, and a positioning member that is inserted through a positioning notch formed in the contact surface of the split plate of the holding type support plate, A molding device, comprising: a fixing member that fixes the positioning member. 2. The positioning hole according to claim 1, wherein the positioning hole is formed at a position corresponding to both ends of the holding type support plate of the rotary conveying member, and the notch for positioning is formed near both ends of the holding type support plate. The molding apparatus is characterized in that 3. The molding apparatus according to claim 1, wherein the fixing member is a drop prevention member that is fixed to the guide rail and receives the lower end of the positioning member. 4. The molding apparatus according to claim 1, wherein the rotary conveyance member is composed of a rotary plate. 5. The molding apparatus according to claim 1, wherein a plurality of holding dies are attached to the holding die support plate. 6. The molding apparatus according to claim 1, wherein the holding mold is a neck mold that holds a neck portion of a molded product, and molds a container made of synthetic resin. 7. The molding apparatus according to claim 6, wherein the molding unit has at least an injection molding unit and a stretch blow molding unit, and molds a synthetic resin container by injection stretch blow molding. 8. The heat-resistant container made of synthetic resin according to claim 6, wherein the molding part has at least a heat treatment part for improving heat resistance of the container and a blow molding part. Molding equipment. 9. A method of mounting a holding die in a molding apparatus, which conveys a molded product held in a holding die to a plurality of molding parts by rotationally driving a rotary conveying member, comprising a divided plate, and a split die for each divided plate. A holding die supporting plate having a holding die fixed thereto is slidably moved from the outside of the molding apparatus toward the center along a guide rail attached to the lower surface of the rotary conveying member, and is supported by the guide rail. A step of aligning a positioning hole formed in the conveying member with a positioning notch formed in the contact surface of the split plate of the holding type support plate; and a positioning member being provided in the notch and the positioning hole. Inserting and positioning the holding die support plate and holding die, and then attaching the fall prevention member to the lower surface of the guide rail to receive the lower end of the positioning member and position it. Retentive mounting method characterized by comprising the step of preventing the falling of the member.