WO2016147981A1 - ブロー型ユニット及びそれを用いたブロー成形装置 - Google Patents
ブロー型ユニット及びそれを用いたブロー成形装置 Download PDFInfo
- Publication number
- WO2016147981A1 WO2016147981A1 PCT/JP2016/057360 JP2016057360W WO2016147981A1 WO 2016147981 A1 WO2016147981 A1 WO 2016147981A1 JP 2016057360 W JP2016057360 W JP 2016057360W WO 2016147981 A1 WO2016147981 A1 WO 2016147981A1
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- WIPO (PCT)
- Prior art keywords
- blow
- mold
- key
- communication hole
- fixing member
- Prior art date
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- 238000000071 blow moulding Methods 0.000 title claims description 22
- 238000004891 communication Methods 0.000 claims abstract description 38
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000003028 elevating effect Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 23
- 238000001746 injection moulding Methods 0.000 description 7
- 238000010102 injection blow moulding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000009189 diving Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
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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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/12—Stretching rods
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/38—Blow-moulding apparatus having movable moulds or mould parts mounted on movable endless supports
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4236—Drive means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/54—Moulds for undercut articles
- B29C49/541—Moulds for undercut articles having a recessed undersurface
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/70—Removing or ejecting blown articles from the mould
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
- B29C2049/4858—Exchanging mould parts, e.g. for changing the mould size or geometry for making different products in the same mould
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C2049/4879—Moulds characterised by mould configurations
- B29C2049/4892—Mould halves consisting of an independent main and bottom part
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/56—Opening, closing or clamping means
- B29C2049/563—Clamping means
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/48185—Moulds with more than one separate mould cavity
Definitions
- the present invention relates to a blow mold unit having a bottom mold that can be raised and lowered, and a blow molding apparatus using the blow mold unit.
- a technique for forming a hollow container made of a synthetic resin there is a technique in which a preform obtained by injection molding or extrusion molding is blow-molded by a blow mold unit provided in a blow molding apparatus to form a hollow container.
- a technique is known in which a preform is placed in a molding space (cavity) formed by a blow mold provided in a blow mold unit, and the preform is blown to form a hollow container by blow molding in the cavity.
- a molding space cavity
- Such a blow molding apparatus has a larger number of types of molds used than, for example, injection molding apparatuses, and requires a lot of time for detaching and replacing the molds.
- a blow mold unit for forming a hollow container having a raised bottom has a blow cavity mold formed of a pair of split molds and a bottom mold of a predetermined shape configured to be lifted and lowered by a lifting device. ing. Such a bottom mold removal / replacement operation requires a lot of time.
- the removal / replacement work of the bottom mold requires a complicated work such as diving under the bottom mold and fastening the fixing bracket in a narrow space after opening the blow cavity mold, resulting in poor workability and work time. There is a problem that it tends to be long.
- the present invention has been made in view of such circumstances, and uses a blow-type unit capable of improving the workability of attaching / detaching / changing a bottom mold that can be raised and lowered, and shortening the work time.
- An object is to provide a blow molding apparatus.
- a first aspect of the present invention that solves the above-mentioned problems is a blow cavity mold that has a pair of split molds that are clamped by bringing parting surfaces into contact with each other, and that forms a molding space for molding a hollow container with a raised bottom
- a bottom mold that forms the bottom surface of the molding space
- a fixing member to which the bottom mold is fixed on the upper surface side and a lifting rod included in the lifting device is connected to the lower surface side, the lifting rod and the fixing member,
- An insertion hole into which the lifting rod is inserted is formed on the lower surface side, and a communication hole that communicates with the insertion hole is formed on a side surface of the fixing member.
- An opening is formed, and the lifting / lowering rod and the fixing member are coupled by inserting the key member into the communication hole and engaging with a key groove provided at the tip of the lifting / lowering rod.
- Blow type yu Located in Tsu door.
- a first position provided at an opening peripheral edge of the communication hole of the fixing member, and a tip portion facing the communication hole, and a tip portion Has a restricting member having a rotating member that can rotate between a second position that is outside the fixing member, and the key member is inserted into the communication hole and engaged with the elevating rod.
- the key member is restricted from retreating by rotating the restricting member from the second position to the first position.
- the key member in the blow mold unit according to the second aspect, includes the key member at a predetermined position in which the key member is retracted in the communication hole and the engagement with the lifting rod is released.
- An engagement groove facing the restriction member is formed, and the key member is engaged with the engagement groove by rotating the rotating member from the second position to the first position at the predetermined position.
- movement of the key member is restricted.
- a fourth aspect of the present invention is the blow mold unit according to any one of the first to third aspects, wherein a plurality of the bottom molds arranged in a row are fixed to the fixing member, and the lifting rod Are connected to both ends in the row direction of the bottom mold of the fixing member, respectively, and the communication holes are open to both end faces in the column direction of the bottom mold, respectively.
- a blow mold unit according to any one of the first to fourth aspects, the lifting device for lifting and lowering the bottom mold, and clamping the blow cavity mold by moving the split mold. And a drive device for opening the mold.
- the present invention it is possible to improve workability such as removal / replacement of the bottom mold connected to the lifting rod of the lifting device, and to shorten the working time.
- FIG. 1 It is a figure which shows schematic structure of the injection blow molding apparatus which concerns on one Embodiment of this invention. It is a perspective view showing a schematic structure of a blow molding device concerning one embodiment of the present invention. It is a front view which shows schematic structure of the blow molding apparatus which concerns on one Embodiment of this invention. It is a side view which shows the principal part of the blow type unit which concerns on one Embodiment of this invention. It is sectional drawing which shows the principal part of the blow type unit which concerns on one Embodiment of this invention. It is a bottom view which shows the blow type unit which concerns on one Embodiment of this invention. It is a figure which shows an example of the raising / lowering rod which concerns on one Embodiment of this invention.
- an injection blow molding apparatus 1 is an apparatus for producing a synthetic resin hollow container such as a PET bottle, for example, and an injection molding apparatus 3 and a temperature control apparatus are mounted on a machine base 2. 4, a blow molding device 5, and a take-out device 6.
- the injection molding device 3 is connected to the nozzle 7 of the injection device.
- a preform is molded with the resin material injected from the nozzle 7.
- the temperature control device 4 the temperature of the preform is adjusted to a desired temperature
- the blow molding device 5 the preform whose temperature is adjusted is biaxially stretched and blow molded to form a hollow container which is a final molded product.
- the hollow container thus formed is taken out by the take-out device 6.
- a turntable 8 is provided above the injection molding device 3, the temperature control device 4, the blow molding device 5 and the take-out device 6, a turntable 8 is provided.
- the turntable 8 can rotate intermittently with respect to the machine base 2, for example, in the counterclockwise direction.
- the lip mold 9 is provided at four locations in the circumferential direction of the turntable 8, and the preform and the hollow container are held by the lip mold 9 and are sequentially conveyed to a predetermined device by intermittent rotation of the turntable 8. ing.
- this invention has the characteristics in the structure of the blow molding apparatus 5 which comprises such an injection blow molding apparatus 1, especially the structure of a blow mold unit.
- the blow molding apparatus 5 will be described in detail.
- FIG. 2 is a perspective view showing a schematic configuration of a blow molding apparatus including a blow mold unit
- FIG. 3 is a plan view showing a schematic configuration of the blow mold unit.
- the blow molding apparatus 5 includes a blow mold unit 100 attached to the lower base 51. Note that a blow core mold or the like is provided above the blow mold unit 100, but since the configuration is an existing one, detailed description thereof is omitted here.
- the blow mold unit 100 includes a first split mold 101 and a second split mold 102 that are clamped by bringing the parting surfaces into contact with each other, and, for example, a plurality of molding spaces (cavities) in which preforms are accommodated. ) 103 and a bottom die 105 that closes the bottom of each cavity 103 and forms a bottom surface (raised bottom) of a hollow container that is a final molded product.
- the blow mold unit 100 further includes a first fixing plate 107 to which the first split mold 101 is fixed, and a second fixing plate 108 to which the second split mold 102 is fixed.
- the blow mold unit 100 since the blow mold unit 100 includes two sets of blow molds 106, one first fixing plate 107 and two second sheets provided on both sides of the first fixing plate 107, respectively. And a fixed plate 108.
- the two first split molds 101 constituting each blow mold 106 are fixed to the first fixing plate 107 in a back-to-back manner.
- the second split molds 102 constituting each blow mold 106 are fixed to two second fixing plates 108, respectively.
- a driving device 109 for clamping / opening the blow cavity mold 104 is provided on the outside of each second fixing plate 108, for example, which is constituted by a hydraulic cylinder (actuator) or the like.
- these driving devices 109 are connected to each of the second fixing plates 108 to which the second split mold 102 is fixed, and the second split mold 102 is moved so that the blow cavity mold 104 is moved. Is clamped / opened.
- the bottom mold 105 constituting the blow mold 106 is provided corresponding to each cavity 103, and the plurality of bottom molds 105 are, for example, lifting devices (not shown) configured by hydraulic cylinders (actuators) or the like. ) So that it can be moved up and down.
- the plurality of bottom molds 105 provided in the blow mold unit 100 are fixed and integrated on the upper surface of a third fixing plate (fixing member) 110 as shown in FIG.
- the third fixed plate 110 is connected to a plurality of (two in this embodiment) lifting rods 111 constituting a lifting device (not shown).
- the plurality of bottom molds 105 can be moved up and down by being connected to the lifting rod 111 constituting the lifting device via the third fixing plate 110.
- a plurality of bottom molds 105 arranged in a row are fixed to the third fixing plate 110, and the two lifting rods 111 are third fixing plates in the row direction of the bottom mold 105. 110 are connected in the vicinity of both ends.
- FIGS. 4 to 6 are views showing a connecting portion between the third fixing plate 110 and the lifting rod 111 constituting the blow mold unit 100
- FIG. 4 is a side view of the blow mold unit
- FIG. FIG. 6 is a view corresponding to the bottom surface of the blow mold unit. 4 to 6 show a state where the lifting rod is connected to the third fixing plate on the right side in the drawing, and shows a state where the connection is released on the left side in the drawing.
- each lifting rod 111 is connected (fixed) to the third fixing plate 110 by a key member 112.
- the third fixing plate 110 is formed with an insertion hole 113 into which the lifting rod 111 is inserted at a position corresponding to each lifting rod 111 so as to open on the lower surface side.
- a communication hole 114 communicating with the insertion hole 113 is formed in the third fixing plate 110 so as to open on the side surface of the third fixing plate 110.
- the communication holes 114 are provided to be opened on both side surfaces (end surfaces) in the column direction of the bottom mold 105 of the third fixing plate 110.
- the communication hole 114 is a hole into which the key member 112 is inserted, and is formed according to the shape of the key member 112.
- the third fixing plate 110 is formed of two substrates, an upper substrate 115 and a lower substrate 116 in this embodiment.
- the upper substrate 115 and the lower substrate 116 are fixed by a fastening member such as a bolt.
- the insertion hole 113 penetrates the lower substrate 116 and has a depth reaching a part of the upper substrate 115.
- the communication hole 114 is provided at the boundary surface between the upper substrate 115 and the lower substrate 116.
- the communication hole 114 is formed by closing a groove provided on the surface of the lower substrate 116 with the upper substrate 115.
- the elevating rod 111 has a connecting portion 117 having a smaller diameter than the other portions at its tip (upper end).
- the lifting rod 111 is connected to the third fixing plate 110 in a state where the connecting portion 117 is inserted into the insertion hole 113 (see FIG. 5 and the like).
- a key groove 118 is formed in the connecting portion 117 of the lifting rod 111 at a position facing the communication hole 114 when the connecting portion 117 is inserted into the insertion hole 113.
- the key groove 118 is formed along the circumferential direction, and is formed over the entire circumference of the lifting rod 111 in this embodiment.
- a portion corresponding to the key groove 118 of the connecting portion 117 is a small diameter portion 119 having a smaller diameter than the other portions of the connecting portion 117.
- the key member 112 is a plate-like member having a substantially rectangular planar shape and a predetermined thickness, and is a communication hole formed in the third fixed plate 110.
- a slit portion 120 is formed along the insertion / extraction direction at an end portion on the side to be inserted into 114.
- a recess 121 is formed in the lower surface of the key member 112 in the vicinity of the end opposite to the slit 120. The recess 121 is used when the key member 112 is pulled out from the communication hole 114.
- the lifting rod 111 When the lifting rod 111 is connected to the third fixing plate 110, the lifting rod 111 is inserted into the insertion hole 113 as shown on the right side of FIGS.
- the key member 112 is inserted into the communication hole 114 and the key member 112 is pushed into the communication hole 114 until the small diameter portion 119 of the elevating rod 111 is engaged with the slit portion 120. Accordingly, the vertical movement of the lifting rod 111 is restricted and fixed to the third fixing plate 110. That is, when the key member 112 is engaged with the key groove 118 of the lifting rod 111, the lifting rod 111 and the third fixing plate 110 are connected.
- the upper substrate 115 constituting the third fixing plate 110 is the lower substrate 116 in which the communication holes 114 are opened in the insertion / extraction direction of the key member 112 (in this embodiment, the row direction of the bottom mold 105). It extends to the outside of the end face. Therefore, when the key member 112 is inserted into the communication hole 114, the key member 112 can be easily inserted into the communication hole 114 by sliding the key member 112 in contact with the lower surface of the upper substrate 115. be able to.
- the third fixing plate 110 is provided with a lock member (regulating member) 122 that restricts movement (advance and retreat) of the key member 112 inserted into the communicating hole 114 at the opening periphery of the communicating hole 114.
- the locking member 122 includes a rotating member (rotating plate) 123 that is rotatably provided along an end surface of the lower substrate 116 (opening surface of the communication hole 114) constituting the third fixing plate 110. Is attached to the holding plate 124.
- the holding plate 124 is fixed to the upper substrate 115 by a fastening member 125 so as to protrude toward the lower substrate 116 at a position not facing the communication hole 114, for example.
- the rotating member 123 is rotatable between a first position where the tip portion faces the communication hole 114 and a second position where the tip portion is outside the communication hole 114.
- the rotating member 123 has a first position in the horizontal direction as shown in FIG. 9B from the second position in the downward direction in the vertical direction as shown in FIG. The position can be rotated within a range of 90 °.
- the rotating direction of the rotating member 123 varies depending on the mounting position.
- the rotating member 123 is attached to the holding plate 124 in a state of being connected to and integrated with the rotating operation member 126.
- the rotating member 126 is rotated together with the rotation operating member 126 by rotating the rotating operation member 126 with a minus driver or the like.
- the member 123 is configured to rotate.
- the lock member (lock mechanism) 122 has a structure in which the rotation member 123 cannot rotate unless the pushing portion (the portion having the driver groove) on the rotation operation member 126 is pressed with a tool such as a minus driver.
- the rotating member 123 of the lock member 122 is moved from the first position to the second position. Is rotated to the position (FIG. 9A). Thereafter, the key member 112 is retracted in the communication hole 114 to release the connection state between the elevating rod 111 and the third fixing plate 110 (see the left side of FIG. 6). Thereafter, the lifting rod 111 is pulled out from the insertion hole 113 (see the left side of FIGS. 4 and 5), so that the third fixing plate 110 to which the bottom mold 105 is fixed is relatively easily separated from the lifting device (the lifting rod 111). can do.
- connection state (engagement state) between the third fixing plate 110 and the lifting rod 111 can be easily released simply by pulling out the key member 112 from the side surface of the third fixing plate 110. Therefore, the work efficiency at the time of replacement of the bottom mold 105 is improved, and the work time can be shortened.
- the lifting rod is fixed to the lower surface side of the third fixing plate by a fastening member or the like. For this reason, when exchanging the bottom mold as described above, it is necessary for the operator to enter and work in a narrow space such as the lower side of the bottom mold. For this reason, workability
- work for entering the lower side of the bottom mold 105 is not required, so that workability is improved and work time is shortened.
- the key member 112 has an engagement groove 127 at a position facing the rotation member 123 of the lock member 122 at a predetermined position where the key member 112 is retracted to disengage the lift rod 111. It is formed (see FIG. 8).
- the rotating member 123 is rotated from the second position to the first position, as shown in FIG. As described above, the rotation member 123 is engaged with the engagement groove 127.
- the third fixed plate 110 to which the bottom mold 105 is fixed can be easily conveyed. Therefore, workability when replacing the bottom mold 105 can be further improved.
- the upper substrate 115 constituting the third fixing plate 110 is provided with a screw member 128 as a second restricting member for restricting the key member 112 from retreating from a predetermined position (see FIG. (See 5).
- the screw member 128 is attached to the upper substrate 115 in a state where a part of the head portion protrudes downward from the surface (lower surface) of the upper substrate 115.
- the configuration including the rotating member 123 that is rotatable in the range from the second position that is vertically downward to the first position that is horizontal is illustrated.
- the configuration of the lock member 122 is not limited to this configuration.
- the rotation member 123A included in the lock member 122 rotates between a second position that is vertically upward as shown in FIG. 11 and a first position that is horizontal (see FIG. 9B). It may be configured to be possible.
- the lock member 122 includes the rotating member 123A, it is necessary to form an insertion groove 129 into which the rotating member 123A is inserted in the upper substrate 115.
- the rotating member 123A is not exposed to the outside at the first position and is housed in the insertion groove 129. Thereby, for example, when the fixing member 110 is conveyed, it is possible to suppress the occurrence of problems such as the rotation member 123A colliding with an obstacle and being damaged (deformed).
- blow type unit in which a plurality of cavities are provided in two rows has been exemplified.
- the present invention can be applied to, for example, a blow type unit in which a plurality of cavities are provided in one row. it can.
- the communication hole into which the key member is inserted is formed so as to open to the end face of the third fixing member in the row direction of the bottom mold. It may be provided so as to open at the end face of the third fixing member in a direction orthogonal to the row direction.
- blow molding device including two lifting rods is illustrated, but the present invention can also be applied to a blow molding device including three or more lifting rods.
Abstract
Description
2 機台
3 射出成形装置
4 温調装置
5 ブロー成形装置
6 取出し装置
7 ノズル
8 回転盤
9 リップ型
51 下部基盤
100 ブロー型ユニット
101 第1の割型
102 第2の割型
103 キャビティ(成形空間)
104 ブローキャビティ型
105 底型
106 ブロー型
107 第1の固定板
108 第2の固定板
109 駆動装置
110 第3の固定板(固定部材)
111 昇降ロッド
112 キー部材
113 挿入孔
114 連通孔
115 上部基板
116 下部基板
117 連結部
118 キー溝
119 小径部
120 スリット部
121 窪み部
122 ロック部材(規制部材)
123 回転部材
124 保持板
125 締結部材
126 回転作動部材
127 係合溝
128 ビス部材(第2の規制部材)
129 挿入溝
Claims (5)
- パーティング面同士を当接させて型締めされる一対の割型を有し、上げ底の中空容器を成形する成形空間を形成するブローキャビティ型と、
前記成形空間の底面を形成する底型と、
上面側に前記底型が固定されると共に下面側に昇降装置が備える昇降ロッドが接続される固定部材と、
前記昇降ロッドと前記固定部材とを連結するキー部材と、を有し、
前記固定部材には、前記昇降ロッドが挿入される挿入孔が下面側に開口して形成されていると共に、前記挿入孔に連通する連通孔が側面に開口して形成されており、
前記キー部材を前記連通孔に挿入して前記昇降ロッドの先端部に設けられているキー溝に係合することで、前記昇降ロッドと前記固定部材とを連結することを特徴とするブロー型ユニット。 - 請求項1に記載のブロー型ユニットにおいて、
前記固定部材の前記連通孔の開口周縁に設けられ、先端部が前記連通孔に対向する第1の位置と、先端部が前記固定部材の外側となる第2の位置との間で回動可能な回転部材を備える規制部材を有し、
前記連通孔内に前記キー部材が挿入されて前記昇降ロッドに係合した状態で前記規制部材を前記第2の位置から前記第1の位置に回転させることで前記キー部材の後退が規制されることを特徴とするブロー型ユニット。 - 請求項2に記載のブロー型ユニットにおいて、
前記キー部材には、前記連通孔内で前記キー部材を後退させ前記昇降ロッドとの係合を解除した所定位置において前記規制部材に対向する係合溝が形成され、
前記所定位置において前記回転部材を前記第2の位置から前記第1の位置に回転させることで前記キー部材が前記係合溝に係合されて前記キー部材の移動が規制されることを特徴とするブロー型ユニット。 - 請求項1~3の何れか一項に記載のブロー型ユニットにおいて、
前記固定部材には、一列に配置された複数の前記底型が固定されており、
前記昇降ロッドは、前記固定部材の前記底型の列方向両端部にそれぞれ接続され、
前記連通孔は、前記底型の列方向の両端面にそれぞれ開口していることを特徴とするブロー型ユニット。 - 請求項1~4の何れか一項に記載のブロー型ユニットと、
前記底型を昇降させる前記昇降装置と、
前記割型を移動させて前記ブローキャビティ型を型締め及び型開きする駆動装置と、を備えることを特徴とするブロー成形装置。
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