WO2024063148A1 - 射出成型機の金型冷却システム - Google Patents

射出成型機の金型冷却システム Download PDF

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Publication number
WO2024063148A1
WO2024063148A1 PCT/JP2023/034350 JP2023034350W WO2024063148A1 WO 2024063148 A1 WO2024063148 A1 WO 2024063148A1 JP 2023034350 W JP2023034350 W JP 2023034350W WO 2024063148 A1 WO2024063148 A1 WO 2024063148A1
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WO
WIPO (PCT)
Prior art keywords
valve
circuit
inlet
outlet
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/034350
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English (en)
French (fr)
Japanese (ja)
Inventor
一郎 北浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pascal Engineering Corp
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Pascal Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pascal Engineering Corp filed Critical Pascal Engineering Corp
Priority to JP2024548322A priority Critical patent/JP7802413B2/ja
Publication of WO2024063148A1 publication Critical patent/WO2024063148A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould

Definitions

  • the present invention relates to a mold cooling system for an injection molding machine.
  • Patent Document 1 As a mold cooling system for a conventional injection molding machine, for example, there is one described in "FIGS. 1 to 4" of Publication No. 20009-001402 (Patent Document 1).
  • cooling water was supplied from a cooling water supply/discharge unit connected to a cooling water supply source to a plurality of cooling water passages in the mold via a plurality of hoses.
  • the plurality of hoses were connected to the side surface of the platen, and the platen and the mold were coupled by a coupling device.
  • the cooling water supply/drainage unit has a valve stand (branch pipe device) that branches one pipe from the cooling water supply source into a plurality of pipes (the number of the plurality of hoses), and the valve stand The hose was connected to an on-off valve.
  • a conventional valve stand 50 consists of an inlet branch pipe device 51 and an outlet branch pipe device 52.
  • the inlet branch pipe device 51 branches cooling water from a single cooling water supply pipe 53 into a plurality of hoses 54 and supplies them to the mold.
  • the outlet branch pipe device 52 collects drainage from the mold from a plurality of hoses 55 into one drainage pipe 56.
  • One end of the hoses 54, 55 is connected to an on-off valve 57, and the other end of the hoses 54, 55 is provided with a joint 58 that is coupled to a joint of the mold.
  • the mold In the conventional injection molding machine, the mold is covered with a safety cover for safety.
  • the distance between the side surface of the platen and the safety cover is narrow, and the hose piping is performed in this narrow space.
  • the valve stand since the valve stand was located at a distance from the mold, it was difficult to check whether the valve was open or closed from the joining position during the joining operation, and it was difficult to select a fitting for the tangled hose end.
  • the present invention aims to provide a mold cooling system for an injection molding machine that solves the above problems.
  • the present invention has taken the following measures. That is, the present invention provides a mold cooling system for an injection molding machine in which cooling water is supplied from a cooling water supply source via a valve stand to a plurality of cooling water passages of a mold attached to a platen.
  • a mold cooling system for an injection molding machine having a joint connected to the cooling water passage at the end of the hose.
  • the inlet circuit and the outlet circuit are formed in a block body provided on the side surface of the platen, and the main inlet valve and the main outlet valve are connected to the cooling water supply source and are provided in the block body, and the main inlet valve and the main outlet valve are connected to the cooling water supply source and are provided in the block body,
  • the inlet circuit and the outlet circuit are formed in the block body, and the inlet circuit and the outlet circuit communicate with the on-off valve, the main inlet valve, and the main outlet valve, an air supply valve is connected to the inlet circuit, and a drain valve is connected to the outlet circuit. It is preferable to have
  • the main inlet valve, main outlet valve, air supply valve, and drain valve are provided on the lower surface of the block body, and the air supply valve and the plurality of opening/closing valves are arranged in a straight line with a vertical difference. It is preferable to be there.
  • the main inlet valve and the air supply valve are provided on the lower surface of the block body, the main outlet valve and the drain valve are provided on the side surface of the block body, and the air supply valve and the plurality of opening/closing valves are aligned in a straight line. They can be arranged with a difference in the top and bottom.
  • the air supply valve is provided on the lower surface of the block body, the main inlet valve, main outlet valve, and drain valve are provided on the side surface of the block body, and the air supply valve and the plurality of opening/closing valves are aligned in a straight line. They can be arranged with a difference in the top and bottom.
  • the inlet circuit and the outlet circuit are formed in a block body that is provided so as to be repositionable with respect to the side surface of the platen, and a communication path that communicates with the opening/closing valve, the main inlet valve, and the main outlet valve is formed in the block body.
  • an air supply valve is connected to the inlet circuit, and a drain valve is connected to the outlet circuit.
  • the opening/closing valve of the valve stand, the hose joint, and the mold joint are visible, and the mold replacement operator can easily select the hose joint to be connected to the mold joint. This effect is achieved.
  • FIG. 1 is a perspective view of an injection molding machine equipped with a mold cooling system, seen from the non-operating side.
  • FIG. 2 is an enlarged perspective view of section A in FIG. 1;
  • FIG. 2 is a plan view of the embodiment of the present invention seen from above the platen.
  • FIG. 3 is a front view of the embodiment of the present invention seen from above the platen.
  • FIG. 2 is a side view of the embodiment of the present invention seen from above the platen.
  • FIG. 4 is an explanatory diagram of the IN circuit of the valve stand of the first embodiment.
  • 8 is a sectional view showing the IN side main air circuit taken along line CC in FIG. 7.
  • FIG. FIG. 3 is an explanatory diagram of the OUT circuit of the valve stand of the first embodiment.
  • FIG. 10 is a cross-sectional view showing the OUT side main circuit taken along line DD in FIG. 9.
  • FIG. 10 is a cross-sectional view showing the drain circuit taken along line EE in FIG. 9.
  • FIG. 6 is an explanatory diagram of the IN circuit of the valve stand of the second embodiment.
  • 13 is a cross-sectional view showing the IN side main circuit taken along line JJ in FIG. 12.
  • FIG. 13 is a cross-sectional view showing the air circuit taken along line KK in FIG. 12.
  • FIG. FIG. 6 is an explanatory diagram of the OUT circuit of the valve stand of the second embodiment.
  • FIG. 16 is a cross-sectional view showing the OUT side main circuit taken along line LL in FIG.
  • FIG. 15; 16 is a cross-sectional view showing the drain circuit taken along line MM in FIG. 15.
  • FIG. FIG. 7 is an explanatory diagram of the IN circuit of the valve stand of the third embodiment.
  • FIG. 19 is a cross-sectional view showing the IN side main circuit along line PP in FIG. 18;
  • FIG. 19 is a cross-sectional view showing the air circuit taken along line QQ in FIG. 18;
  • FIG. 7 is an explanatory diagram of the OUT circuit of the valve stand of the third embodiment.
  • 22 is a cross-sectional view showing the OUT side main circuit taken along line RR in FIG. 21.
  • FIG. FIG. 22 is a cross-sectional view showing the drain circuit taken along line SS in FIG. 21;
  • FIG. 4 is a perspective view of a fourth embodiment.
  • FIG. 7 is a partially sectional front view of the fourth embodiment.
  • FIG. 7 is a side view showing a part of the fourth embodiment in cross section.
  • FIG. 7 is a bottom view showing a part of the fourth embodiment in cross section.
  • 26 is an enlarged view of section A in FIG. 26, where (a) shows the locked position and (b) shows the unlocked position.
  • FIG. 3 is a plan view showing a change in the position of a block body. It is an operation explanatory diagram at the 0 degree position of the block body, (a) is a plan view with the safety door open, and (b) is a side view thereof.
  • FIG. 2 is an explanatory diagram of the operation of the block body at a 45-degree or 90-degree position, in which (a) is a plan view with the safety door closed, and (b) is a side view thereof.
  • the mold cooling system for an injection molding machine is a system that internally cools a mold 2 that is detachably attached to an injection molding machine 1 installed in a molding factory.
  • the injection molding machine 1 has a fixed platen 3 and a movable platen 4, and a fixed mold 2a and a movable mold 2b are removably attached to each of the platens 3 and 4.
  • the injection molding machine 1 includes four guide rods 5 that movably guide and support a movable platen 4, and a movable platen 4 that is connected to a fixed platen 3 for clamping and opening a mold 2.
  • An injection mechanism having a movable platen drive mechanism 6 having a hydraulic cylinder (or drive motor) driven in the approaching/separating direction, and an injection cylinder 7 for supplying molten synthetic resin to a cavity in a mold in a clamped state. Equipped with mechanism 8 etc.
  • the platens 3 and 4 are made of a magnetic steel material, and have a plurality of magnet units (magnetic force generation mechanism) that generate magnetic attraction force, and are magnetic type that can be selectively switched between an attraction state and a non-adsorption state. It is configured as a clamping device.
  • magnet units magnetic force generation mechanism
  • the present invention is not limited to a magnetic clamp device, and the mold 2 may be removably fixed to the platens 3 and 4 using a hydraulic clamp device or the like.
  • the injection molding machine 1 is provided with a safety cover 9 that covers the mold 2 for safety.
  • the safety cover 9 is provided in a position that covers the side surface of the mold 2 and a position that opens the side surface, so that the safety cover 9 can be slid laterally and its position can be changed.
  • a plurality of cooling water passages 10 for cooling the mold 2 are formed inside the mold 2 (see FIG. 6). Joints 11 are provided at the inlet (IN) and outlet (OUT) of the cooling water passage 10. These joints 11 are provided on the side surface of the mold 2 on the safety cover 9 side.
  • the mold cooling system supplies cooling water from a cooling water supply source (temperature controller) 12 (see FIG. 1) via a valve stand 13 to a plurality of cooling water passages 10 of molds 2a and 2b attached to platens 3 and 4. This is where cooling water is supplied and discharged.
  • a cooling water supply source temperature controller 12 (see FIG. 1)
  • a valve stand 13 to a plurality of cooling water passages 10 of molds 2a and 2b attached to platens 3 and 4. This is where cooling water is supplied and discharged.
  • the valve stand 13 has an inlet circuit 20 and an outlet circuit 21 provided on the sides of the platens 3 and 4 so as to protrude from the sides of the platens 3 and 4 toward the safety cover 9 of the injection molding machine (see FIG. 6). .
  • the inlet circuit 20 is provided with a main inlet valve 18 and the outlet circuit 21 is provided with a main outlet valve 19.
  • a plurality of on-off valves 15 are provided in the inlet circuit 20 and the outlet circuit 21 at predetermined intervals in the projecting direction so that hoses 16 connected to the on-off valves 15 hang down in the form of a blind (see FIG. 5). ).
  • the inlet circuit 20 and the outlet circuit 21 are formed in a block body 14 provided on the side surface of the platens 3 and 4.
  • the block body 14 has a plurality of opening/closing valves 15 and a hose 16 connected to the valves 15 in a hanging shape on the lower surface thereof.
  • the end of this hose 16 has a joint 17 connected to the cooling water passage 10 of the mold 2.
  • the joint 11 provided on the side surface of the mold 2 is a male quick coupler
  • the joint 17 at the end of the hose 16 is a female quick coupler, but this is not limited to this. do not have.
  • the block body 14 is provided with a main inlet valve 18 and a main outlet valve 19 connected to the cooling water supply source 12.
  • An inlet circuit 20 that communicates between the main inlet valve 18 and the plurality of on-off valves 15 and an outlet circuit 21 that communicates between the main outlet valve 19 and the plurality of on-off valves 15 are formed in the block body 14. .
  • the plurality of on-off valves 15 are divided into two, an inlet on-off valve 15a and an outlet on-off valve 15b.
  • the block body 14 is provided with an air supply valve 22 communicating with the inlet circuit 20 and a drain valve 23 communicating with the outlet circuit 21.
  • the main inlet valve 18, main outlet valve 19, on-off valve 15, air supply valve 22, and drain valve 23 are ball valves that are opened and closed by operating a manual handle, but are not limited to this. It's not something you can do.
  • the circuit diagram shown in FIG. 6 is for draining the cooling water remaining in the mold 2.
  • the method for draining water inside the mold 2 is as follows.
  • the mold 2 is provided with first to fourth cooling water passages 12, and fittings 11 are provided at the inlet and outlet of each cooling water passage 12.
  • the valve stand 13 is also provided with eight opening and closing valves 15, namely, first to fourth inlet opening and closing valves 15a and first to fourth outlet opening and closing valves 15b.
  • the main inlet valve 18 and the main outlet valve 19 are both closed.
  • the first inlet opening/closing valve 15a and the first outlet opening/closing valve 15b are opened, and the second to fourth inlet and outlet opening/closing valves 15 are both closed.
  • the drain valve 23 is opened, and then the air supply valve 22 is opened to supply compressed air from the inlet circuit 20 to the first cooling water passage 10 of the mold 2, and the residual water inside is collected in a tank or the like via the drain valve 23.
  • the residual water in the second to fourth cooling water passages 10 is sequentially recovered according to the above procedure.
  • hose numbers such as 1st to 4th etc. can be displayed on the surface of the block body 14, so incorrect piping can be prevented. Unused hoses 16 can also be determined in units of circuits.
  • FIGS. 7 to 11 What is shown in FIGS. 7 to 11 is a first embodiment of the valve stand 13.
  • the inlet (IN) circuit is shown separately in FIG. 7, and the outlet (OUT) circuit is shown in FIG. 9.
  • FIG. 7 and 9 are side views, (c) is a bottom view, and (d) is a side view seen from the opposite direction, and the block body 14 of the valve stand 13 is It is formed into a rectangular shape.
  • the air supply valve 22 and the inlet opening/closing valve 15a are screwed into the bottom surface of the block body 14.
  • the outlet opening/closing valve 15b is attached to the lower end of a pipe 24 hanging down from the bottom surface of the block body 14.
  • the air supply valve 22 and the inlet/outlet opening/closing valve 15 are alternately arranged in a straight line at equal intervals.
  • the outlet opening/closing valve 15b is disposed at a position shifted downward so as not to interfere with operation of the manual handle of the inlet opening/closing valve 15a.
  • the pitch of the arrangement in a straight line can be narrowed, and the overall length of the block body 14 can be shortened, so that the block body 14 can be arranged in the narrow space from the side of the platens 3, 4 to the safety cover 9.
  • the main inlet valve 18 , the main outlet valve 19 , and the drain valve 23 are flange-mounted on the bottom surface of the block body 14 .
  • These valves 18, 19, and 23 are arranged at equal intervals on a straight line different from the arrangement position of the inlet/outlet opening/closing valve 15. By mounting with a flange, the arrangement interval with the on-off valve 15 can be narrowed, and the width of the block body 14 can be reduced.
  • holes for an inlet circuit 20 and an outlet circuit 21 are bored in the block body 14.
  • FIGS. 12 to 17 What is shown in FIGS. 12 to 17 is a second embodiment of the valve stand 13.
  • An inlet (IN) circuit is shown in FIG. 12, and an outlet (OUT) circuit is shown in FIG. 15.
  • 12(a) and 12(b) are side views
  • FIG. 12(c) is a bottom view
  • FIG. 15(a) is a plan view
  • FIG. 15(b) is a side view
  • FIG. 15(c) is a bottom view. be.
  • the arrangement of the air supply valve 22 and the inlet/outlet valve 15 is the same as in the first embodiment.
  • the main inlet valve 18 is flange-mounted to the bottom surface of the block body 14 at a different position from the inlet/outlet valve 15.
  • the main outlet valve 19 and the drain valve 23 are different from the first embodiment in that the main outlet valve 19 and the drain valve 23 are flanged to the side surface of the block body 14.
  • FIGS. 18 to 23 What is shown in FIGS. 18 to 23 is a third embodiment of the valve stand 13.
  • a main inlet valve 18, a main outlet valve 19, and a drain valve 23 are provided on the side surface of the block body 14, and the air supply valve 22 and the inlet/outlet opening/closing valve 15 are provided on the side surface of the block body 14. It is located on the bottom.
  • the other configurations are almost the same as those of the previous embodiment.
  • the fourth embodiment is shown in Figures 25 to 32.
  • an arm 25 is attached to the fixed platen 3 so as to protrude from the side surface thereof toward the safety cover 9 side.
  • a vertical shaft 26 is fixed to the arm 25 so as to project upward.
  • the block body 14 of the valve stand 13 is attached to this shaft 26 so as to be rotatable around the vertical axis.
  • a lock mechanism 27 is provided between the block body 14 and the shaft 26 to regulate the rotation angle of the block body 14.
  • This locking mechanism 27 locks the block body 14 to the shaft 26 at rotational positions of 0 degrees, 45 degrees, and 90 degrees, as shown in FIGS. 29 and 30. That is, recesses 28 are formed at positions of 0 degrees, 45 degrees, and 90 degrees on the circumferential surface of the shaft 26, and balls 29 that engage with the recesses 28 are provided in the block body 14. The ball 29 is urged toward the recess 28 by an elastic member 30. With such a locking mechanism 27, the valve stand 13 is fixed to the side surface of the platen 3 at rotational positions of 0 degrees, 45 degrees, and 90 degrees.
  • the configuration of the valve stand 13 is the same as that of the first to third embodiments, and includes an on-off valve 15, a main inlet valve 18, a main outlet valve 19, an air supply valve 22, a drain valve 23, etc. It is provided.
  • FIG. 31 and 32 show how to use the valve stand 13.
  • the safety door 19a of the safety cover 19 is opened and the block body 14 is locked at the 0 degree position.
  • the tip of the block body 14 projects laterally beyond the safety cover 19.
  • the joint 17 of the hose 16 is connected to the joint 11 of the mold 2. Further, the opening/closing operation of the opening/closing valve 15 is performed.
  • the block body 14 is folded to a 45 degree or 90 degree position, and the main inlet valve 18, main outlet valve 19, air supply valve 23, or drain valve 23 is opened and closed. Thereafter, the safety door 19a is closed and the injection molding machine starts molding.
  • lock mechanism 27 is not limited to one in which the recess 28 and the ball 29 engage, but may be any mechanism as long as it can lock the block body 14 in a predetermined rotational position.
  • the arm 25 is attached to the platen 3 as an example, a stand may be provided directly on the ground and a block body may be rotatably provided on the stand.
  • the present invention is not limited to what is shown in the embodiments and examples.
  • the block body 14 is not limited to a rectangular shape.
  • the inlet circuit 20 and the outlet circuit 21 may be constituted by separate pipes or the like.
  • cooling water used in the claims and specification includes temperature-controlled water heated by a temperature controller. That is, the "cooling system” of the present invention includes a "temperature control system.”

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
PCT/JP2023/034350 2022-09-21 2023-09-21 射出成型機の金型冷却システム Ceased WO2024063148A1 (ja)

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JP2024548322A JP7802413B2 (ja) 2022-09-21 2023-09-21 射出成型機の金型冷却システム

Applications Claiming Priority (4)

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JP2022149641 2022-09-21
JP2022-149641 2022-09-21
JP2022170232 2022-10-25
JP2022-170232 2022-10-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347113U (https=) * 1989-09-18 1991-05-01
JPH04298318A (ja) * 1991-03-27 1992-10-22 Sekisui Chem Co Ltd 射出成形金型の温度制御装置
JPH07314502A (ja) * 1994-05-20 1995-12-05 Komatsu Raito Seisakusho:Kk 射出成形用金型装置
JP2017013476A (ja) * 2015-07-07 2017-01-19 株式会社ジェイテクト 温度調整機能を有する金型装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347113U (https=) * 1989-09-18 1991-05-01
JPH04298318A (ja) * 1991-03-27 1992-10-22 Sekisui Chem Co Ltd 射出成形金型の温度制御装置
JPH07314502A (ja) * 1994-05-20 1995-12-05 Komatsu Raito Seisakusho:Kk 射出成形用金型装置
JP2017013476A (ja) * 2015-07-07 2017-01-19 株式会社ジェイテクト 温度調整機能を有する金型装置

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JP7802413B2 (ja) 2026-01-20

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