KR20130001545A - Support device for middle mold of tandem type injection molding machine - Google Patents

Support device for middle mold of tandem type injection molding machine Download PDF

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Publication number
KR20130001545A
KR20130001545A KR1020110062370A KR20110062370A KR20130001545A KR 20130001545 A KR20130001545 A KR 20130001545A KR 1020110062370 A KR1020110062370 A KR 1020110062370A KR 20110062370 A KR20110062370 A KR 20110062370A KR 20130001545 A KR20130001545 A KR 20130001545A
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KR
South Korea
Prior art keywords
mold
connector
injection molding
molding machine
support device
Prior art date
Application number
KR1020110062370A
Other languages
Korean (ko)
Inventor
김용수
정호
박상현
Original Assignee
엘에스엠트론 주식회사
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Priority to KR1020110062370A priority Critical patent/KR20130001545A/en
Publication of KR20130001545A publication Critical patent/KR20130001545A/en

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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/12—Injection moulding apparatus using two or more fixed moulds, e.g. in tandem
    • 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
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • 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
    • B29C45/64—Mould opening, closing or clamping devices
    • 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
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • B29C2045/326—Supporting means for the central mould plate

Abstract

The present invention by independently supporting the intermediate mold disposed between the moving mold and the fixed mold to prevent the movement and the deflection or inclination of the fixed mold mechanism due to the weight of the intermediate mold to maintain the precision and quality reliability of the injection molded product In particular, there is provided an intermediate mold support device of a tandem injection molding machine, which can prevent the improper locking operation of the mold locking system and the interference and impact between the tandem mold assembly, thereby extending the service life of the tandem mold assembly.

Figure P1020110062370

Description

Support Device for Middle Mold of Tandem Type Injection Molding Machine}

The present invention relates to an intermediate mold support apparatus of a tandem injection molding machine, and more particularly, by independently supporting an intermediate mold disposed between the movable mold and the fixed mold, and the deflection of the moving and fixed mold mechanism due to the weight of the intermediate mold. It is to prevent the tilt.

In general, the tandem injection molding machine 10 is a tie bar (T) which is connected to the fixed clamping mechanism 14, the movable clamping mechanism 12 provided in the clamping apparatus as shown schematically in Figures 1a to 1c The opening and closing operation, i.e., mold opening, between the moving mold 16, the intermediate mold 18, and the fixed mold 20 constituting the tantum mold assembly M1 while reciprocating in the direction of the fixed mold clamping mechanism 14 fixed in position. ) And mold closing.

The movable mold 16 is fixed to the movable mold clamping mechanism 12, and the fixed mold 20 is fixed to the fixed mold clamping mechanism 14. An intermediate mold 18 is disposed between the moving mold 16 and the stationary mold 20.

Therefore, when the moving mold 16 and the intermediate mold 18 are locked by the locking means 24 of the mold locking system 22, the mold 10 and the intermediate mold 18 are opened between the intermediate mold 18 and the fixed mold 20. On the contrary, when the fixed mold 20 and the intermediate mold 18 are locked by the locking means 24 of the mold locking system 22, the mold 20 and the intermediate mold 18 are opened between the intermediate mold 18 and the moving mold 16.

That is, injection molding is performed while alternating mold opening and closing mold between the moving and intermediate molds 16 and 18 constituting the tandem mold assembly M1 and the intermediate and fixed molds 18 and 20.

For reference, a mold locking system (Compact Locking System, CLS) 22 including a locking means 24 so that mold opening and closing can be made. In general, a mold locking system that is well known in a tandem injection molding machine is used. As it is applied as it is, a detailed description thereof will be omitted.

However, in the tandem type injection molding machine 10 having the above structure, for example, when the mold is closed between the moving mold 16 and the intermediate mold 18, the weight of the intermediate mold 18 is moved to the moving mold mechanism 12. Will be weighted. Accordingly, the moving mold clamping mechanism 12 is inclined or sag in the direction of the intermediate mold 18.

When the tilting or deflection of the movable clamping mechanism 12 occurs as described above, mold closing is performed in a state in which interference and impact are generated between molds, thereby causing deformation and damage of the mold.

In addition, when the inclination and deflection are severe as described above, the failure and the deformation of the tie bar T and the parallelism and straightness of the moving mold mechanism 12 is inevitable. As a result, mold opening and mold closing may be unstable, leading to deterioration of precision and quality reliability of the injection molded product, as well as causing mass defects.

The present invention has been invented to solve the problems of the prior art as described above, and when the mold is closed with the intermediate mold by independently supporting the intermediate mold, the movement and the deflection or inclination of the fixed mold mechanism due to the weight of the intermediate mold are prevented. It is an object of the present invention to provide an intermediate mold support device of a tandem injection molding machine.

The present invention for achieving the above object, the support device for the intermediate mold is disposed between the movable mold fixed to the moving mold mechanism and the fixed mold fixed to the fixed mold mechanism to perform the moving and fixed mold and mold opening and closing A connector coupled to the bottom of the intermediate mold; The intermediate mold support apparatus of the tandem injection molding machine, comprising: a joint bar disposed between the connector and disposed between the connector and the connector to be interlocked with each other to be interlocked with each other. Is provided.

In addition, the connector is inserted and coupled from the bottom of the intermediate mold.

In addition, the fastening rod is fixed to the connector to be coupled to the fastening hole formed in the intermediate mold is coupled.

In addition, a coupling hole is formed in the connector, and the joint bar is inserted into the coupling hole to be coupled.

In addition, an elastic member for elastically supporting the joint bar and the connector is installed in the joint bar between the lower end of the connector and the joint bar.

In addition, a spiral portion is formed below the joint bar to be engaged with the moving bar.

In addition, a spiral portion is included in the connector so that the fastening can be made between the connector and the fastening hole formed in the intermediate mold including the fastening hole.

As described above, in the intermediate mold support apparatus of the tandem injection molding machine according to the present invention, when the mold is closed with the intermediate mold by applying independent support to the intermediate mold, the movement and the fixed mold mechanism due to the weighting of the intermediate mold The effect of preventing sag or tilting can be expected.

In addition, when the intermediate mold support device of the tandem injection molding machine according to the present invention is used, the locking operation of the mold locking system and mold interference and impact between the tandem mold assembly are also prevented during mold closing, thereby preventing damage and deformation of the tandem mold assembly. You can do it.

Furthermore, if the stabilization according to mold opening and mold closing is maintained due to the above effects, it can be expected that the effect of precision and quality reliability of the injection molded product can be maintained as it is.

Figures 1a to 1c is a side view schematically showing a typical tandem injection molding machine, Figure 1a shows a state opened between the intermediate mold and the stationary mold, Figure 1b shows a state opened between the moving mold and the intermediate mold, Figure 1c shows the mold closed between the moving and intermediate and the stationary mold.
Figure 2 is a cross-sectional view of the main part of the intermediate mold as viewed from the moving mold of the intermediate mold support apparatus of the tandem injection molding machine according to the present invention.
Figure 3a to 3c is a side view schematically showing a tandem injection molding machine according to the invention, Figure 3a shows a state opened between the intermediate mold and the stationary mold, Figure 3b shows a state opened between the moving mold and the intermediate mold Figure 3c shows the mold closed between the moving and intermediate and the stationary mold.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the intermediate mold support device of the tandem injection molding machine according to the present invention will be described in detail.

Prior to the description, the moving clamping mechanism 12, the fixed clamping mechanism 14, the tie bar T, the mold locking system 22, and a combination thereof are already known components of the tandem injection molding machine, Since the configuration is also the same, in the following description of the present invention, detailed descriptions of well-known technologies may be omitted since they may obscure the features and the gist of the present invention. The same components described in other prior art use the same reference numerals and are omitted to avoid duplicate description.

Figure 2 is a cross-sectional view of the main part of the intermediate mold as seen from the moving mold of the intermediate mold support device of the tandem injection molding machine according to the present invention.

As shown in the figure, the mold support device 34 is coupled to the lower portion of the intermediate mold (30).

The mold support device 34 includes a connector 36 formed in a hollow structure, a joint bar 38 coupled in a partially inserted state into the connector 36, and the connector 36 and the compression bar 38. It is composed of a resilient member 40 and a moving bar 42 fastened to the joint bar 38.

Specifically, the connector 36 has a hollow structure in which the coupling holes 48 forming the upper and lower stepped portions 44 and 46 are formed, and in some regions of the connector 36 facing the lower direction. The spiral part 50 is formed in the outer surface.

First, the spiral portion 52 is formed on the upper inner surface of the coupling hole 48. The spiral portion 52 is fastened in a state in which the fastening rod 56 of the fastener 54 made of bolts is drawn out, and the head 58 of the fastener 54 is caught by the upper step 44. It is taking structure.

The fastening rod 56 drawn out from the coupling hole 48 in the upper direction is inserted into the middle mold 30 from the bottom surface of the middle mold 30 together with the spiral portion 50 formed on the upper outer surface of the connector 36. It is fastened with 30. In this case, fastening holes 60 and 62 corresponding to the fastening rod 56 and the spiral part 50 are formed in the intermediate mold 30 so as to take the fastening structure.

However, the connector 36 is not necessarily limited to the structure in which the connector 36 is fastened to the intermediate mold 30. For example, the connector 36 and the intermediate mold 30 may not be connected to the connector 36 and the fastening rod 56. Also included in the present invention is a pin-hole type coupling structure in which the fastening rod 56 is simply fitted.

In addition, a joint bar 38 is inserted into the coupling hole 48 in a state in which it is engaged with the lower step 46 of the coupling hole 48, and a joint bar drawn out from the coupling hole 48 in a downward direction. The spiral part 64 is formed in the lower part of 38 with the length.

At this time, the elastic member 40 is coupled to the joint bar 38 between the joint bar 38 and the connector 36 in a state of holding the joint bar 38 and the connector 36. The elastic member 40 is to provide a function to adjust the fine balance of the intermediate mold 30 by using the elastic force of the elastic member 40 when adjusting the height to be described later.

As the elastic member 40, a coiled spring is preferably used, but it is not necessarily limited to a coiled spring, and any elastic means may be employed as long as it can exert elastic support.

The spiral portion 64 of the joint bar 38 is coupled to the structure penetrating through the horizontal movement bar 42 is arranged. In addition, the height adjusting member 66, which is a nut, is fastened to the spiral portion 64 so that the position fixing together with the height adjustment of the joint bar 38 can be accurately performed.

Frames 68 are disposed on both bottom surfaces of the moving bars 42, and the moving bars 42 move in a supporting state placed on an upper surface of the frame 68.

Figure 3a to 3c is a side view schematically showing a tandem injection molding machine according to the invention, Figure 3a shows a state opened between the intermediate mold and the stationary mold, Figure 3b shows a state opened between the moving mold and the intermediate mold Figure 3c shows the mold closed between the moving and intermediate and the stationary mold.

As shown in the figure, for example, when closing between the moving mold 16 and the intermediate mold 30 constituting the tandem mold assembly M2, the weight of the intermediate mold 30 is carried on the moving mold mechanism 12. At this time, in the present invention, since the mold support device 34 has a support structure for supporting the intermediate mold 30 as described above with reference to FIG. 2, the weight of the intermediate mold 30 is not loaded into the moving mold mechanism 12. Will not.

Accordingly, the tilting or sagging phenomenon of the mobile mold clamping device 12 as in the prior art is prevented, and the parallelism, the deformation of the tie bar T, and the like are naturally prevented. As a result, stabilization due to mold opening and closing is continued, so that the precision and quality reliability of the injection molded product can be maintained as time passes.

In particular, if the deflection or inclination of the movable clamping mechanism 12 is prevented, poor locking operation of the mold locking system 22 during mold closing and mold closing interference and impact between the tandem mold assembly M2 are also prevented, thereby the tantum mold assembly ( The service life of M2) can be extended.

While the present invention has been described in connection with certain exemplary embodiments and drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10 injection molding machine 12 moving mold mechanism
14: fixed mold mechanism 16: moving mold
18, 30: middle mold 20: fixed mold
22: gold lock system 24: locking means
34: mold support device 36: connector
38: joint bar 40: elastic member
42: moving bar 44: upper step
46: lower step 48: coupling hole
50, 52, 64: spiral 54: fastener
56: fastening rod 58: head
60, 62: fastening hole 66: height adjustment member
68: frame

Claims (7)

An intermediate mold disposed between the movable mold 16 fixed to the movable mold clamping mechanism 12 and the fixed mold 20 fixed to the fixed mold clamping mechanism 14 to perform mold opening and closing with the movable and fixed mold 16. As the support apparatus of (30),
A connector (36) coupled to the bottom of the intermediate mold (30);
The moving bar 42 and the connector 36 are disposed between the moving bar 42 and the connector 36 which are disposed directly below the connector 36 and move in the directions of the moving and fixed mold bodies 12 and 14. Joint bar 38 is coupled to interlock;
Intermediate mold support device for a tandem injection molding machine, characterized in that comprising a.
The method of claim 1,
The connector (36) is an intermediate mold support device of the tandem injection molding machine, characterized in that the insert is coupled from the bottom of the intermediate mold (30).
The method of claim 2,
The intermediate mold support device of the tandem injection molding machine, characterized in that the fastening rod 56 is fixed to the connector 36 so as to be coupled to the fastening hole 60 formed in the intermediate mold 30.
4. The method according to any one of claims 1 to 3,
A coupling hole (48) is formed in the connector (36), and the intermediate mold support device of the tandem injection molding machine, characterized in that the coupling bar (38) is inserted into and coupled to the coupling hole (48).
4. The method according to any one of claims 1 to 3,
An intermediate mold support device for a tandem injection molding machine, characterized in that an elastic member (40) for elastically supporting the connector (36) and the joint bar (38) is provided between the connector (36) and the joint bar (38).
The method according to any one of claims 1 to 3,
The lower part of the joint bar 38, the intermediate mold support device of the tandem injection molding machine, characterized in that the spiral portion 64 is formed to be fastened to the moving bar 42.
The method of claim 3,
Including the fastening hole 60, a spiral portion 50 is included in the connector 36 so that the fastening can be made between the fastening hole 62 formed in the intermediate mold 30 and the connector 36. Mold support device for a tandem injection molding machine.
KR1020110062370A 2011-06-27 2011-06-27 Support device for middle mold of tandem type injection molding machine KR20130001545A (en)

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KR1020110062370A KR20130001545A (en) 2011-06-27 2011-06-27 Support device for middle mold of tandem type injection molding machine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101626509B1 (en) 2015-11-17 2016-06-01 동의대학교 산학협력단 Locking System for Tandom Injection Molding Machine
KR20160065324A (en) 2014-11-28 2016-06-09 강기태 A locking device for tandem type injection molding machine
CN109624245A (en) * 2019-01-11 2019-04-16 泰瑞机器股份有限公司 A kind of five plate elbow rod type die joining devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160065324A (en) 2014-11-28 2016-06-09 강기태 A locking device for tandem type injection molding machine
KR101626509B1 (en) 2015-11-17 2016-06-01 동의대학교 산학협력단 Locking System for Tandom Injection Molding Machine
CN109624245A (en) * 2019-01-11 2019-04-16 泰瑞机器股份有限公司 A kind of five plate elbow rod type die joining devices
CN109624245B (en) * 2019-01-11 2023-12-29 泰瑞机器股份有限公司 Five-plate toggle rod type die assembly device

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