WO2014030639A1 - ブロー成形機 - Google Patents
ブロー成形機 Download PDFInfo
- Publication number
- WO2014030639A1 WO2014030639A1 PCT/JP2013/072174 JP2013072174W WO2014030639A1 WO 2014030639 A1 WO2014030639 A1 WO 2014030639A1 JP 2013072174 W JP2013072174 W JP 2013072174W WO 2014030639 A1 WO2014030639 A1 WO 2014030639A1
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- WO
- WIPO (PCT)
- Prior art keywords
- blow molding
- preform
- unit
- blow
- molding machine
- Prior art date
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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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
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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
- B29C49/70—Removing or ejecting blown articles from the mould
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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
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
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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
- B29C49/28—Blow-moulding apparatus
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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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42069—Means explicitly adapted for transporting blown article
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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
- B29C49/4236—Drive means
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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
- B29C49/56—Opening, closing or clamping means
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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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6409—Thermal conditioning of preforms
- B29C49/6427—Cooling of preforms
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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
- B29C49/78—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/02—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for articles, e.g. for containers
- B65G19/025—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for articles, e.g. for containers for suspended articles
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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
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
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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
- 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
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
- B29C48/155—Partial coating thereof
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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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42073—Grippers
- B29C49/42085—Grippers holding inside the neck
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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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42093—Transporting apparatus, e.g. slides, wheels or conveyors
- B29C49/42097—Sliding rails, e.g. inclined
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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
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42093—Transporting apparatus, e.g. slides, wheels or conveyors
- B29C49/42105—Transporting apparatus, e.g. slides, wheels or conveyors for discontinuous or batch transport
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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
- B29C49/42378—Handling malfunction
- B29C49/4238—Ejecting defective preforms or products
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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
- B29C49/56—Opening, closing or clamping means
- B29C49/5601—Mechanically operated, i.e. closing or opening of the mould parts is done by mechanic means
- B29C49/5603—Mechanically operated, i.e. closing or opening of the mould parts is done by mechanic means using toggle mechanism
Definitions
- the present invention relates to a blow molding machine, and more particularly to a blow molding machine that delivers a blow molded container to a post-processing apparatus.
- blow molding machines there is a blow molding machine called a so-called 1.5 stage system that has the advantages of the 1 stage system and the 2 stage system (for example, see Patent Document 1).
- This 1.5-stage blow molding machine like the one-stage blow molding machine, forms an injection molding part for forming a preform by injection molding and blows the preform to form a container (bottle).
- a blow molding unit and a transport unit that transports a plurality of preforms to the blow molding unit are provided.
- a product take-out unit is provided on the other side adjacent to one side where the blow molding unit is provided in a rectangular conveyance path for conveying the preform or bottle upside down.
- the product take-out part is inverted from the inverted state to the upright state by the arm that grips the neck portion of the container that is blow-molded and conveyed in an inverted state, and takes out the container out of the blow molding machine.
- the inverted state is a state in which the neck portion faces downward, and is the opposite state to the upright state.
- the blow-molded container is conveyed by a plug provided on a conveyor belt, delivered from a discharge station to a rail, and blown out from a slit formed in a hollow conduit provided along the rail.
- the jet the container is delivered along the rail to the subsequent process.
- the post-process is also automated, enabling integrated production from bottle production to filling and labeling. In order not to stop the production line that is processed at high speed, it is necessary to reliably deliver the bottle carried out from the blow molding machine to the subsequent process line at high speed and stably.
- Patent Document 2 does not disclose a device that delivers a container carried out of the machine by an arm of a product takeout unit to a device in a subsequent process.
- the present invention has been made in view of such circumstances, and a blow molding machine that stabilizes the operation of delivering a blow molded container to a subsequent process and easily adjusts the delivery operation according to the apparatus of the subsequent process.
- the purpose is to provide.
- This invention is made
- the blow molding machine includes a cooling unit that forcibly cools the preform that has been injection molded by the injection molding unit.
- the preform is conveyed from the injection molding unit to the cooling unit, for example, by a vacuum means. That is, the preform is held and conveyed by suctioning the inside by a vacuum means attached to the neck portion of the preform.
- the inside of the preform is always at a negative pressure, the body portion may be dented and deformed. This deformation of the preform also affects the shape (quality) of the blow molded container.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a blow molding machine capable of transporting a preform from an injection molding section to a cooling section without deforming the preform.
- a first aspect of the present invention that solves the above problems includes a blow molding section that blow-molds a plurality of containers in a blow-cavity mold that is clamped, and holds the plurality of containers while maintaining a blow molding pitch. And a take-out part for taking out the plurality of containers from the opened blow cavity mold to a take-out position outside the blow cavity mold, wherein the plurality of containers at the take-out position are blown
- the delivery unit further includes a delivery unit that delivers to a subsequent process of the molding machine, the delivery unit including a rail that holds and guides the plurality of containers, and a lifting block that is lifted and lowered with respect to the rail.
- the block includes a plurality of blades, an endless member to which the plurality of blades are fixed at the blow molding pitch, and a drive unit that drives the endless member to travel.
- the plurality of containers taken out to the take-out position outside the blow cavity mold by the take-out part of the blow molding machine are held on the rail.
- a plurality of blades are inserted between a plurality of containers, and an endless member having a plurality of blades fixed at a blow molding pitch is driven and driven by a drive unit.
- the plurality of containers are pushed by the plurality of blades and are delivered to the apparatus outside the blow molding machine while maintaining the blow molding pitch along the rail.
- the elevating unit returns to the original position, so that the plurality of containers do not interfere with the plurality of blades when the plurality of blow-molded containers are subsequently taken out to the take-out position.
- the plurality of containers are delivered while being maintained at the blow molding pitch by being pushed by the plurality of blades. Therefore, the possibility that the containers in the middle of delivery collide with each other and the containers are damaged is reduced. Further, the speed of the plurality of blades that manage the container delivery operation can be easily implemented by adjusting the driving speed of the driving unit. Therefore, the operation of delivering the blow molded container to the subsequent process is stable, and the delivery operation can be easily adjusted according to the apparatus of the subsequent process.
- a second aspect of the present invention is the blow molding machine according to the first aspect, further comprising a machine base on which the blow molding part is mounted, wherein the delivery unit is a container orthogonal to the opening / closing direction of the blow cavity mold
- the blow molding machine is characterized by protruding from the machine base along the delivery direction.
- the delivery unit further carries out the plurality of containers along the container delivery direction.
- Good By projecting the delivery unit from the machine base in the container delivery direction, at least a part of the delivery unit can be arranged so as to overlap with an apparatus in a subsequent process in a plan view. Accordingly, it is possible to add a container transport device that connects the blow molding machine and the post-process device, or to project the structure of the part that receives the supply of the container in the post-process device toward the blow molding machine side. Not necessarily required. *
- a third aspect of the present invention is the blow molding machine according to the second aspect, wherein the rail is a flange provided in the neck portion in an upright state with each neck portion of the plurality of containers facing upward.
- the blow molding machine includes a pair of rail members arranged along the container delivery direction to support the portion from below, and each of the plurality of blades pushes the neck portion.
- the plurality of blades can push the neck portion having the flange portion supported by the pair of rail members.
- the plurality of containers are smoothly delivered along the rails while maintaining an upright state.
- each of the plurality of blades includes a protruding piece inserted between the pair of rail members, and the protruding piece is the flange portion.
- a blow molding machine characterized by pushing.
- a rail driving unit that drives at least one of the pair of rail members and drops the plurality of containers at the take-out position. Furthermore, the present invention is in a blow molding machine.
- the rail drive unit is driven and controlled by the container discharge mode signal, etc., and the container in the preliminary operation or the container corresponding to the molding failure signal can be dropped by the open drive that widens the interval between the pair of rail members. it can. Thereby, supply of a container to the post-process of a blow molding machine can be stopped.
- the pair of rail members do not interfere with the carry-in / out path of the blow cavity mold parallel to the container delivery direction.
- the blow molding machine is characterized in that it is removably supported at a position.
- the container delivery direction by the delivery unit substantially coincides with the carry-in / out route for carrying the blow cavity mold into and out of the blow molding machine, and the rail becomes an obstacle when the blow cavity mold is carried in and out. Therefore, by making the pair of rail members retractable, the burden of the blow cavity type loading / unloading work is reduced.
- the blow cavity mold includes a first blow cavity mold in which the blow molding pitch is a first blow molding pitch;
- the blow molding pitch is replaceable with a second blow cavity mold having a second blow molding pitch, and the second blow molding pitch is n (n is an integer of 2 or more) times the first blow molding pitch.
- the plurality of blades are fixed to the endless member at the first blow molding pitch.
- An eighth aspect of the present invention is a blow molding machine having an injection molding part for injection molding a plurality of preforms, and a blow molding part for stretch-blow molding the preforms into a container by a predetermined number,
- a blower that includes an intermittent conveyance unit that intermittently conveys the predetermined number of preforms along a conveyance path, and the blow molding that grips the predetermined number of preforms that are conveyed along the conveyance path by the intermittent conveyance unit.
- At least one of an injection molding cycle time or a blow molding cycle time a transfer unit that transfers to the transfer unit; a discharge unit that is provided downstream of the transfer unit of the transfer path and discharges the preform from the transfer path; And changing means for changing the transport speed of the preform by the transport section along with the change, and accompanying the change by the changing means
- the transfer unit transfers the preform to the blow molding unit, if a part of the predetermined number of preforms exceeds the transfer unit, the transfer unit In the blow molding machine, the preform is conveyed to the discharge unit.
- the heating unit includes a heater that heats the preform that is continuously conveyed on the conveyance path, and the changing unit includes the heater.
- the blow molding machine is characterized in that the output is further changed.
- the preform can be heated to a more appropriate temperature by the heating unit, and the quality of the container formed by blow molding is improved.
- a blow molding machine having an injection molding part for injection molding a preform and a blow molding part for stretch-blow molding the preform into a container, wherein the injection is performed at the injection molding part.
- a preform conveying section that forcibly cools the molded preform, and a preform conveying section that holds the preform injection molded by the injection molding section and conveys the preform to the cooling section.
- the portion has an insertion portion that is inserted into the neck portion of the preform, and a suction holding portion that sucks and holds the inside of the preform in a state where the insertion portion is inserted into the neck portion of the preform,
- a blow molding machine comprising: a chuck portion that can be opened and closed, and a sandwiching mechanism portion that sandwiches a neck portion of the preform into which the insertion portion is inserted from the outside.
- the preform transporting portion is moved into the preform by the suction holding portion.
- suction is stopped.
- FIG. 7A and 7B are diagrams showing the relationship between the blades and the rails. It is a figure which shows the support mechanism of a rail. It is a figure which shows the opening drive of a rail. It is a front view which shows the modification of a delivery unit. It is a front view which shows the modification of a delivery unit.
- FIG. 1 It is a top view which shows an example of the blow molding machine with which this invention is applied. It is a figure which shows an example of an injection molding machine. It is a block diagram which shows schematic structure of an injection molding machine. It is a figure which shows an example of the screen of the input device which comprises an injection molding machine. It is a figure which shows the cooling part which has the discharge function of a preform. It is a figure which shows the preform carrying-out apparatus provided in an intermittent conveyance position. It is a bottom view which shows the holding
- FIG. 5 is a partial cross-sectional view illustrating a gripping mechanism portion of a preform transport unit, and is a diagram illustrating an operation of the gripping mechanism portion.
- FIG. 5 is a partial cross-sectional view illustrating a gripping mechanism portion of a preform transport unit, and is a diagram illustrating an operation of the gripping mechanism portion.
- the blow molding machine 1 includes a blow molding unit 10, a delivery unit 100, and a withdrawal unit 20 that takes out a bottle (container) from the blow molding unit 10 toward the delivery unit 100.
- the blow molding unit 10 provided on the machine base 2 of the blow molding machine 1 is configured to place the preform P in a bottle B in a blow cavity mold 11 having a pair of blow cavity split molds 11A and 11B. Blow molding.
- the blow cavity split molds 11A and 11B are fixed to the mold clamping plates 12A and 12B.
- the mold clamping plates 12A and 12B are connected to, for example, toggle mechanisms 13A and 13B.
- the toggle mechanisms 13A and 13B are driven by a mold clamping mechanism (not shown), the blow cavity split molds 11A and 11B are opened, closed, and clamped in the direction of arrow D1 in FIG. *
- the take-out unit 20 maintains the blow molding pitch and holds the bottle B, and takes out the bottle B from the blow cavity mold 11 opened to the take-out position inside the delivery unit 100 outside the blow cavity mold 11.
- the take-out portion 20 includes a pair of arms 21 that grip the neck portion of the bottle B, an air cylinder 22 that opens and closes the pair of arms 21, and a guide rail that linearly guides the pair of arms 21 and the air cylinder 22.
- a linear drive unit (not shown) that drives the pair of arms 21 and the air cylinder 22 along the guide rail 23.
- the pair of arms 21 is provided in the maximum number of simultaneous moldings in the blow molding unit 10, for example, 8 sets.
- the pair of arms 21 grips the neck portion of the blow-molded bottle B by the closing drive of the air cylinder 22 after the blow molding and before the blow cavity mold 11 is opened. Thereafter, the pair of arms 21 are moved along the guide rails 23 in the direction of the arrow D2 in FIG. 1 to transport the bottle B to the take-out position in the delivery unit 100.
- An arrow D2 direction in FIG. 1 is a direction orthogonal to the arrow D1 direction in FIG. 2 in the horizontal plane.
- the pair of arms 21 are driven to open by the air cylinder 22, and the bottle B is delivered to the delivery unit 100. Thereafter, the pair of arms 21 are moved back along the guide rails 23 to the blow molding unit 10.
- FIG. 1 shows a blow molding machine 1 and, for example, a filling device 200 in the subsequent process. At least a part of the delivery unit 100 can be provided so as to protrude from the machine base 2 of the blow molding machine 1 in the direction of arrow D2 in FIG. It can extend to above the machine base 202. Thereby, a container conveying device for connecting the blow molding machine 1 and the filling device 200 is added, or the structure of the portion of the filling device 200 that receives the supply of the container is projected toward the blow molding machine 1 side. I don't need it. On the machine base 202 of the filling device 200, a transport device 210 that transports the bottle B delivered from the delivery unit 100 can be provided.
- the delivery unit 100 will be described with reference to FIGS. 3 to 9 in addition to FIG. FIGS. 3 to 6 show three types of bottles B1 to B3 having different lengths and outer diameters among many types of bottles B that can be blow-molded by replacing the blow cavity mold 11 of the blow molding machine 1. It is shown.
- the small bottle B1 is blow-molded at the first blow molding pitch P1.
- the relatively large bottles B2 and B3 are formed at the second blow molding pitch P2.
- the number of simultaneous blow moldings of the small bottle B1 is 8
- the delivery unit 100 may be supplied with the preform P when the blow molding machine 1 is in a preliminary operation. The handling of the preform P in the delivery unit 100 will be described later. *
- the delivery unit 100 includes a rail 102 that holds and guides the container B (any of B1 to B3), and a lifting block 110 that is raised and lowered with respect to the rail 102.
- the rail 102 has a pair of rail members 102 ⁇ / b> A and 102 ⁇ / b> B that face each other, and supports a flange portion (for example, a support ring) F provided on the neck portion N of the bottle B from below.
- a flange portion for example, a support ring
- the arm 21 of the take-out portion 20 holds the neck portion N excluding the flange portion F as shown in FIG. Therefore, since the rail 102 does not interfere with the arm 21, it is not necessary to open and close the rail 102 with respect to the plurality of bottles B conveyed to the take-out position in the delivery unit 100 by the arm 21 of the take-out unit 20.
- the arm 21 is driven to open by the air cylinder 22 at the take-out position, the bottle B is delivered from the arm 21 to the rail 102. Thereafter, the arm 21 can be moved back toward the blow molding part 10.
- the elevating block 110 includes a plurality of blades 112, a belt (an endless member in a broad sense) 114 to which the plurality of blades 112 are fixed at a first blow molding pitch P1, and a plurality of pulleys 116A around which the belt 114 is stretched.
- a driving unit for example, a motor (not shown) that rotationally drives one driving pulley 116A of 116B and 116C. The motor drives and drives the belt 114 via the drive pulley 116A.
- the other two pulleys are a driven pulley 116B and a tension pulley 116C. *
- the raising / lowering block 110 can be moved up and down with respect to the rail 102 to a retracted position shown in FIGS. 3 and 4 and a delivery operation position shown in FIGS. 5 and 6.
- the blow molding machine 1 is provided with an upper fixed platen 120, and a height reference plate 122 is fixed below the upper fixed platen 120.
- a height adjustment plate 126 that can adjust the height position with respect to the height reference plate 122 by the rotation of the adjustment knob 124 is disposed.
- FIG. 3 to 6 show the elevating block 100 that is moved up and down with respect to the height adjusting plate 126.
- an elevating drive unit such as an air cylinder 130, an elevating guide 132, a stopper rod 134, and the like are arranged.
- the elevating block 110 has an elevating frame 118 on which blades 112, a belt 114, pulleys 116A to 116C, a motor (not shown), and the like are mounted.
- a rod 131 of an air cylinder 130 is fixed to the lifting frame 118.
- a guide shaft 119 that is guided up and down by the elevating guide part 132 is fixed to the elevating frame 118.
- the height adjustment plate 126 (see FIG. 2) whose height position can be adjusted with respect to the height reference plate 122 by the rotation of the adjustment knob 124 shown in FIG. 2 to 6).
- the height adjustment of the height adjustment plate 126 can be performed even when the length of the neck portion N of the bottle B to be blow-molded is different.
- the driving pulley 116A is driven by a motor (not shown). Then, the belt 114 on the lower side of the belts 114 facing vertically in FIG. 5 is moved in the direction of arrow D2 in FIG.
- the plurality of blades 112 fixed to the belt 114 also move together with the belt 114 in the direction of arrow D2. Then, each of the plurality of blades 112 idles for a while and then comes into contact with the neck portion N of the bottle B.
- the plurality of blades 112 continue to move integrally with the belt 114 in the direction of arrow D2. Thereby, the plurality of bottles B are pushed by the plurality of blades 112 and conveyed along the rail 102 while maintaining the blow molding pitch.
- the blow molding pitch is the first blow molding pitch P1 for the small bottle B, and the second blow molding pitch P2 for the large bottles B2 and B3. Therefore, the bottles B pushed by the blades 112 do not collide with each other, and the bottles B are not damaged and deformed.
- the bottle receiving position S1 (FIG. 1) of the conveying device 210 in the filling device 200 shown in FIG. 1 is more in the delivery direction D2 than the release position S0 (FIG. 5) where the blades 112 are separated from the bottle B. It is downstream of.
- the bottle B separated from the blade 112 at the release position S0 continues to travel due to inertial force and reaches the bottle receiving position S1.
- the bottle B delivered to the transport device 210 is transported by the transport force of the transport device 210 thereafter.
- the plurality of bottles B pushed by the plurality of blades 112 reach the release position S0 and the bottle receiving position S1 with a time difference. Therefore, the bottles B do not collide with each other even downstream from the release position S0, and the bottles B are not damaged and deformed.
- a drive unit that drives the blade 112 and the belt 114 to travel such as a motor
- a drive unit that drives the blade 112 and the belt 114 to travel can easily adjust the rotation speed according to current, voltage, number of pulses, and the like. Accordingly, the bottle B being pushed by the blades 112 can be stably run while maintaining an upright state without being inclined. Further, the speed to reach the bottle receiving position S1 needs to be within a certain range, but since this speed is the inertia speed of the bottle B, in addition to the speed of the bottle B at the release position S0, the size of the bottle B It depends on the sheath weight. In the present embodiment, since the motor speed can be adjusted according to the size and weight of the bottle B, it is easy to ensure an arrival speed within a predetermined range at the bottle receiving position S1. *
- the lifting / lowering block 110 is returned to the retracted position shown in FIGS. 3 and 4 as the rod 131 of the air cylinder 130 moves backward. Therefore, when the blow-molded bottle B is next carried out to the take-out position, the bottle B does not interfere with the blades 112.
- FIGS. 7A and 7B show the relationship between the rail 102 and the blade 112. In either case, it is required that the blade 112 does not interfere with the rail 102.
- FIG. 7A since the lower end of the blade 112 is above the rail 102, the blade 112 does not interfere with the rail 102. In this case, the blade 112 pushes the neck portion N above the flange portion F of the bottle B.
- the blade 112 includes a protruding piece 112A inserted between the pair of rail members 102A and 102B. In this case, the blade 112 pushes the flange portion F of the bottle B with the protruding piece 112A. In this case, the flange portion F itself that travels on the rail 102 is pushed, so that the moment acting on the bottle B is less than that in FIG. 7A, and the traveling posture of the bottle B is further stabilized.
- FIG. 8 shows an example of a mechanism for supporting the rail 102.
- the two arm support plates 140 are fixed to the blow molding machine 1.
- One of the pair of rail members 102A and 102B is fixed to the free end of a substantially L-shaped arm 144 that can swing around a swing fulcrum 142 provided on each of the two arm support plates 140. .
- FIG. 8 shows a state in which the pair of rail members 102A and 102B fixed to the two arms 144 shown by solid lines in FIG. A position indicated by a broken line obtained by swinging the two arms 144 in the direction of the arrow D3 from this position is a retracted position of the two arms 144.
- the retracted position is not limited to the position shown in FIG. 8 rotated 180 degrees around the swing fulcrum 142.
- Each of the pair of arm support plates 140 is provided with a hole 145. After the arm 144 is rotated in the arrow D3 direction to a position exceeding the hole 145, a rod-shaped stopper member (not shown) is inserted into the hole 145. The arm 144 is fixed on the arm support plate 140 via a bar-shaped stopper member. Since the end position of the arm 144 (on the rail 102 side) does not increase, the arm 144 can easily reach the operator's hand and work more easily. *
- each of the pair of rail members 102 ⁇ / b> A and 102 ⁇ / b> B can be fixed to an open / close drive unit fixed to the arm 144, for example, a rod 151 that is driven forward and backward by an air cylinder 150. .
- the pair of rail members 102A and 102B can be opened and closed in the direction of arrow D4.
- the blow molding machine 1 it is possible to prohibit delivery of the bottle B to the filling device 200 by driving the air cylinder 150 to be opened by a signal issued during the preliminary operation, an abnormal signal, or the like.
- the blow molding operation may not be performed.
- the preform P is transported to the delivery unit 100 instead of the bottle B.
- the pair of rail members 102 ⁇ / b> A and 102 ⁇ / b> B can be driven to open and the preform P can be discharged without being delivered to the filling device 200.
- the bottle B supported by the rail 102 may be pulled by static electricity, resulting in a displacement.
- the static electricity generated in the blow cavity mold 11 or the like may cause a position shift due to being pulled in the direction opposite to the bottle delivery direction D2 (on the blow cavity mold 11 side). If the positional deviation of the bottle B occurs, there is a possibility that the bottle B cannot be properly conveyed by the plurality of blades 112.
- the delivery unit 100 may be provided with an air blow device.
- the nozzle 161 of the air blowing device 160 is arranged between the bottle B (Bn) closest to the blow cavity mold 11 and the blow cavity mold 11. Also good.
- the movement of each bottle B caused by static electricity can be regulated by blowing air from the nozzle 161 toward the bottle Bn along the bottle delivery direction D2.
- the nozzles 162 of the air blowing device 160 may be arranged on the blow cavity mold 11 side of each of the plurality of bottles B.
- the plurality of nozzles 162 are fixed to the lower ends of the pair of rail members 102A and 102B and blown, that is, blown from both sides (D2 oblique direction) of the rail on which each bottle B is placed. Thereby, the movement of each bottle B resulting from static electricity can be suppressed more reliably.
- blow molding machine 1 An example of the blow molding machine 1 having the delivery unit 100 described above is shown in FIG. However, the delivery unit 100 is omitted in FIG.
- movement of the injection molding process of the preform P, a cooling process, a heating process, a blow molding process, and a taking-out process is demonstrated with reference to FIG.
- the details of the apparatus shown in FIG. 12 are the same as those disclosed in WO2012-057016.
- arrows I1 to I8 mean intermittent conveyance
- arrows C1 to C3 mean continuous conveyance. That is, the blow molding machine 1 includes a transport unit including a continuous transport unit that continuously transports each preform P along the transport path, and an intermittent transport unit that intermittently transports a predetermined number of preforms P along the transport path. ing.
- N N is an integer of 2 or more preforms P are injection-molded in an upright state in each of a plurality of rows, for example, three rows.
- N 8 preforms P are formed in each row
- N 4 preforms P are injected in each row.
- Three rows of N preforms P are intermittently conveyed in the I1 direction by a take-out device (not shown) holding the preforms P in the pot. Thereafter, the preform P is taken out of the pot by the preform conveying unit and transferred to the cooling device 400.
- the cooling device 400 is inverted and lowered, and N preforms P are delivered to the three rows of transfer jigs 510. Thereafter, the conveyance jig 510 is carried out to the heating unit 500 side by row.
- the injection molding device 301 provided in the injection molding unit 300 is a four-piece preform injection molding device.
- the four pieces mean the lower base 310, the upper mold clamping machine 320, the lower mold clamping machine 330, and the movable board 340.
- the lower base 310 is fixed to the upper part of a machine base (not shown) installed on the floor.
- the lower base 310 supports a plurality of, for example, four clamp shafts 350 through a bearing (not shown) so as to be movable up and down. *
- the upper mold clamping machine 320 is fixed to the upper end side of the four clamp shafts 350 and moves up and down integrally with the four clamp shafts 350.
- the lower mold clamping machine 330 is fixed to the lower end side of the four clamp shafts 350 and moves up and down integrally with the four clamp shafts 350.
- the movable platen 340 is disposed between the lower base 310 and the upper mold clamping plate 320 and supported by a bearing (not shown) so as to be movable up and down along the four clamp shafts 350. *
- a mold opening / closing driving means 360 is provided for moving the movable platen 340 up and down between the mold opening position and the mold closing position with the lower base 310 as a reference position. That is, the movable platen 340 can be moved up and down by the mold opening / closing drive means (first hydraulic cylinder) 360. Further, by raising and lowering the lower mold clamping machine 330 with the lower base 310 as a reference position, the four clamp shafts 350 and the upper mold clamping machine 320 are moved up and down integrally with the lower mold clamping machine 330 and the upper mold clamping machine 320 is lowered.
- a mold clamping means (second hydraulic cylinder) 370 for setting the position as the mold clamping position is provided. *
- die installed in the injection molding apparatus 301 is a hot runner and injection cavity mold
- a linear sensor 381 is fixed to the sensor rail 380 whose upper end is fixed to the upper mold clamping plate 320.
- the linear sensor 381 detects the mold opening position and the mold closing position, and also detects the slow-down position of the movable platen 340.
- the movement of the movable platen 340 is controlled by appropriately adjusting the hydraulic state of the first and second hydraulic cylinders 360 and 370 based on the detection result of the linear sensor 381.
- a hydraulic circuit 700 for supplying and discharging oil is connected to the oil chambers of the first and second cylinders 360 and 370.
- the hydraulic circuit 700 includes an oil pump 710 and a tank 720, and a switching valve (high response proportional valve) 730 provided in the oil passage between the oil chambers.
- the switching valve 730 is an electromagnetically driven switching valve having an input port connected to the oil pump 710 and a drain port connected to the tank 750.
- the control unit 750 includes operation control means 751 that controls the operation of the switching valve 730 and the like based on setting information input from the input device 760.
- the setting information is information that needs to be set in order to determine the mold opening / closing speed, for example, and is input by an operator operating the input device 760 configured with a touch panel, for example.
- the control unit 750 includes position detection means 752 that detects the position of the movable platen 340 or the like based on the detection result by the linear sensor 381.
- the operation control means 751 appropriately controls the operation of the switching valve 730 and the like based on the setting information and the detection result of the position detection means 752. Then, the control unit 750 appropriately adjusts the mold opening / closing speed in the injection molding machine 301 by controlling the operation of the switching valve 730 and the like in this way.
- the mold opening / closing which is difficult in the conventional machine is achieved by using the relatively inexpensive switching valve (high response proportional valve) 730 and the linear sensor 381.
- the speed can be finely adjusted.
- the operator ends the mold opening at the maximum flow rate and starts the deceleration at the mold position Po1.
- An oil flow rate F1 at a position (for example, Po4) where arbitrary mold opening deceleration ends is input as at least setting information.
- the mold position Po2 at which the mold closing at the maximum flow rate is finished and the deceleration is started, and the oil flow rate F2 at the position at which the arbitrary mold closing / deceleration is finished are input.
- an optimum speed (flow rate) curve is calculated by a predetermined function by the operation control means 751 and drawn on the screen of the input device 760.
- the speed down position When the opening / closing operation is slowed, for example, as shown by a speed curve with a dotted line in FIG. 15B, the speed down position may be closer to the start position and the flow rate may be reduced.
- FIG. 15B shows a speed curve in the mold opening operation, but the same applies to the mold closing operation.
- the speed down position when it is desired to speed up the opening / closing operation, for example, as shown by a dotted line in FIG. 15C, the speed down position may be set closer to the stop position and the flow rate may be increased. Even in such a case, the load on the machine side is less than that of the conventional machine, and the noise can be reduced. *
- the initial flow rate F3 for starting the injection mold opening the position Po3 for starting the mold opening at the maximum flow rate after the mold opening starts, and the maximum flow rate F4 during the injection mold opening.
- the operation control means 761 automatically sets setting information such as a position Po4 where the mold opening deceleration ends, a flow rate F5 from the completion of the mold opening deceleration until the mold is completely opened, and a position Po5 of the mold opening corresponding to the molded product.
- these setting information may of course be set manually by the operator.
- the preform P injection-molded by the injection molding unit 300 is delivered to the cooling unit 400 shown in FIG. 16 via a transport device (not shown).
- the preforms P are inverted in the I2 direction by the cooling unit 400 to be in an inverted state, and each of the preforms P is mounted on three transfer jigs 510 each having a transfer member 511 shown in FIG. *
- the transport jig 510 is intermittently transported in the direction of arrow I3 and is transported to the continuous transport path.
- a plurality of conveyance jigs are continuously conveyed along the C1, C2, and C3 directions by the driving force of the continuous drive sprockets 501, 502, and 503 (continuous conveyance unit).
- the preform P is heated while being rotated by a heater provided in the heating unit 500.
- the conveying jig 510 engaged with the continuous drive sprocket 503 is intermittently returned and conveyed in the I4 and I5 directions at a speed higher than the continuous conveyance by intermittent driving of the intermittent drive sprockets 504 and 505 (intermittent conveyance). Part). *
- the predetermined number of preforms P intermittently conveyed by the intermittent conveyance unit are transferred to the blow molding unit 10 by the transfer unit.
- N transfer arms (not shown) are used to transfer N preforms P from the heating unit 500 to the blow molding unit 10.
- N preforms P are taken out from the transfer jig 510 in an inverted state and inverted in the direction of arrow I6 in FIG.
- the preform P is transferred from the transfer arm to the pair of arms 21 shown in FIG. 1, and is carried into the blow molding unit 10 (see arrow I7 in FIG. 12).
- the preforms P are stretch blow molded into M preforms.
- the discharge of the preform P that is not blow-molded can be performed at a place other than the delivery unit 100.
- the two positions P1 and P2 shown in FIG. 12 indicate positions at which the preform P can be discharged.
- the position P1 shown in FIG. 12 is the cooling unit 400 shown in FIG. 16, and the position P2 shown in FIG. 12 is an intermittent transfer position of the transfer jig 510 having the transfer member 511 shown in FIG. *
- the cooling unit 400 may include, for example, 16 cooling pots 410 in total, 48 in one row section, and a reversing unit 420 that supports the cooling pot 410 as shown in FIG.
- the cooling pot 410 is cooled by the refrigerant circulating in the refrigerant passage 412. Further, the cooling pot 410 has a suction hole 414 for sucking the preform P and adsorbing it to the inner surface of the pot.
- the reversing unit 420 can be reversed around the shaft 422. For example, the preform P taken out from the injection molding unit 300 is sucked and held by the suction holding unit 431 of the preform conveying device 430 shown in FIG. 16, conveyed to the cooling unit 400, and delivered to the cooling pot 410.
- the cooling pot 410 cools the preform P in the upright state before the inversion unit 420 is driven and in the inversion state after the inversion unit 420 is driven. *
- the reversing unit 420 can cause the preform P to fall by stopping suction at the suction hole 414 or by blowing air from the suction hole 414.
- Such drop control of the preform P is used, for example, when the operation is stopped (abnormal) due to defective injection molding. Since there is no need to send unnecessary preforms to subsequent conveyance paths, the workability of molding is improved.
- a preform carry-out device (carry-out unit) 600 can be provided at the intermittent carrying position P2 in FIG.
- the preform P is taken out from the conveying jig 510 by the reversing unit as indicated by an arrow I6 in FIG. 12, reversed, transferred to the pair of arms 21 and conveyed to the blow molding unit 10. The Therefore, the preform P is not transported to the intermittent transport position P2.
- the preform P is not transferred to the blow molding unit 10 by the transfer unit, but is transferred to the intermittent transfer position P2. *
- the conveying member 511 provided in the conveying jig 510 intermittently conveyed at the intermittent conveying position P ⁇ b> 2 is connected to the neck portion N at the upper end portion of the rotation shaft 512 that is driven to rotate by the heating unit 500.
- the holding part 513 to be inserted is fixed.
- the lower end side of the rotation shaft 512 is guided by the rail 520 and is rotated and guided by the follower sprocket 506.
- the preform carry-out device (carry-out unit) 600 has a rotating shaft 602 that rotates together with the driven sprocket 506.
- Lift guide rails 604 are fixed at a plurality of locations in the circumferential direction of the rotating shaft 602.
- An elevating member 610 that is elevated and guided by the elevating guide rail 604 is provided, and two arms 612 and 614 extending horizontally are fixed to the elevating member 610.
- the arm 612 is disposed below the flange portion F of the preform P that is intermittently conveyed, and the arm 614 supports the body portion Bo of the preform P from the side.
- an end face cam 530 is fixed as a drive unit that drives the elevating member 610 up and down.
- the elevating member 610 is provided with a cam follower 616 that contacts the end face cam 530.
- the elevating member 610 is pushed up by the end cam 530 while the preform P and the elevating member 610 move half a circumference along the driven sprocket 506.
- the arm 612 pushes up the flange portion F of the preform P, whereby the neck portion N of the preform P is detached from the holding portion 513 of the conveying member 511.
- a push-down member 540 protruding in the upper region of the preform P separated from the transport member 511 is disposed.
- the tip portion 540A of the push-down member 540 interferes with the body portion Bo of the preform P, and applies an external force that pushes down the preform P to the preform P.
- the centrifugal force acting on the preform P can also be used to drop the preform P out of the blow molding machine 1 and discharge it.
- the push-down member 540 may be driven back and forth. *
- the discharge of the preform P at the intermittent conveyance position P2 can be performed during a preliminary operation such as when molding conditions are set. In this way, the heated preform P can be discharged before being conveyed to the blow molding unit 10. Thereby, the work efficiency is improved by discharging the preform P without passing through the blow molding unit 10.
- the preform P is discharged by the preform carry-out device (carry-out unit) 600 at the intermittent conveyance position P2.
- the blow molding process of N bottles B is performed three times within one cycle time for injection molding 3 rows ⁇ N preforms P. That is, the injection molding cycle time is set to three times or more of the blow molding cycle time. If the injection molding cycle time is less than three times the blow molding cycle time, it becomes impossible to blow-mold all the preforms P. Therefore, the excess preform P on the conveyance path is discharged by the preform carry-out device (carry-out unit) 600.
- the injection molding cycle time may be determined as appropriate. For example, the injection molding cycle time is the same as the insertion interval time of the take-out device (pot) that is taken in and out to carry out the molded preform P from the injection molding unit 300. Set to time.
- the injection molding cycle time is approximately 10.8 seconds (3600 seconds / (8000 / (3x8))
- the take-out device is taken in and out of the injection molding unit 300 at this interval.
- the preform transfer from the cooling unit 400 to the transfer jig 510 must be completed within this time. That is, a plurality (three rows in this embodiment) of conveying jigs 510 related to the previous injection molding cycle are carried out to the heating side, and the same number of empty conveying jigs 510 are kept below the cooling unit 400. There is a need.
- the speed of the conveying jig 510 for example, when the total length of the conveying jig 510 on which the preform P of the number of blow batches (N, here eight) is placed is 500 mm, three rows (500 ⁇ 3) The distance is advanced within 10.8 seconds, specifically, a value of about 138.9 mm / second (500 mm ⁇ 3 / 100.8 seconds).
- the speed change of the transport jig 510 that is continuously transported is performed by continuously rotating drive sprockets 501, 502, and 503.
- Injection cycle time is closely related to production volume. That is, the shortening of the injection molding cycle time leads to an increase in the production amount of the preform P and consequently the bottle B, and the extension leads to a decrease in the production amount.
- blow molding cycle time in a state where the injection molding cycle time is maintained is such that the upper limit is about 3.6 seconds because these preforms P are divided into three blow moldings.
- the injection molding cycle time input device is used to newly input the changed injection molding cycle time that has been shortened or extended. Then, the conveyance speed of the preform P is changed by the control unit (change means) that controls the blow molding machine 1. Along with this, the operating conditions and time of each operating device in the molding machine such as the take-out device and the preform conveying device are automatically changed.
- a predetermined number of preforms P are intermittently conveyed to the transfer unit.
- the conveyance speed is increased from about 138.9 mm / second to about 142.9 mm / second. Be changed.
- a part of the predetermined number of preforms P may be conveyed beyond the transfer unit. That is, as described above, in this embodiment, when the injection molding cycle time is less than three times the blow molding cycle time, the conveyance of the preform P does not match the transfer timing in the transfer unit, and all the preforms P are blown. It becomes impossible to mold.
- whether or not the preform P is transported beyond the transfer unit at a predetermined timing is determined by detecting the transfer timing provided upstream of the transfer unit, specifically at a predetermined position of the drive sprocket 504. Detect by part.
- the rotational speed of the drive sprocket 504 is increased from that at the normal transfer speed, and a predetermined number of these preforms P are transferred to the intermittent transport position P2 via the driven sprocket 505 that moves in synchronization with the drive sprocket.
- Intermittent conveyance to the conveyance device (unloading unit) 600 is performed so that the conveyance unit discharges from the conveyance path (automatic discharge function).
- the injection molding cycle is 10.8 seconds
- the blow molding cycle time is changed to 3.7 seconds on the input device side for the purpose of adjusting molding conditions
- the transfer timing in the transfer section is also in time. Disappear.
- the machine is not stopped because the automatic discharge function described above is performed. Thereby, the injection molding cycle time or the blow molding cycle time can be changed while the blow molding machine 1 is continuously operated.
- the preform when changing the injection molding cycle time or the blow molding cycle time, it is preferable to further change the output of the heater of the heating unit 500 accordingly.
- the conveyance speed of the preform P when the injection cycle time is shortened, the conveyance speed of the preform P is also increased. This means that the heating time of the preform P is shorter than before the change.
- This difference in molding conditions is a major problem in obtaining a homogeneous molded product. Therefore, after the change of the conveyance speed, a temperature decrease of the preform P that has passed through the heating unit 500 is detected, and this value is fed back to increase the heater output so that the continuous operation can be performed under the same molding conditions. Thereby, the preform can be heated to a more appropriate temperature by the heating unit 500, and the quality of the container formed by blow molding can be improved.
- the preform conveyance part 430 includes a gripping mechanism unit 432 together with a suction holding unit 431, and the preforms P are injected into the injection molding unit 300 by the suction holding unit 431 and the gripping mechanism unit 432. You may make it convey to the cooling part 400 from (the taking-out apparatus 302).
- the suction holding part 431 itself which sucks and holds the preform P has an existing configuration, the description here is omitted (see WO2012 / 057016 if necessary). *
- the suction holding portion (vacuum plug) 431 is fixed to the plug fixing plate 433.
- the plug fixing plate 433 is fixed to a fixing plate 435 provided above the plug fixing plate 433 via a chuck opening / closing plate 434.
- the actual preform conveyance unit 430 has a structure in which two fixing plates 435 are connected, for convenience of explanation, only one set on one side is shown here. *
- the gripping mechanism portion 432 includes a pair of chuck members 436 provided corresponding to a plurality of (two in this embodiment) suction holding portions 431 arranged in parallel, and the chuck member 436 is on the opposite side of the preform P.
- the end is fixed to one end (lower end) of the chuck connecting member 437.
- the other end (upper end) of the chuck connecting member 437 is rotatably connected to the plug fixing plate 433 by a shaft member 438.
- the other end of the chuck connecting member 437 is further connected to the chuck opening / closing plate 434.
- the chuck connecting member 437 is formed in a substantially L shape along two sides of the plug fixing plate 433 (see FIG. 18).
- the chuck connecting member 437 is connected to the chuck opening / closing plate 434 at a portion facing one side different from the connecting portion with the plug fixing plate 433. That is, the chuck connecting member 437 is configured to be interlocked with the operation of the chuck opening / closing plate 434.
- the chuck member 436 extends in the row direction of the preforms P so that a plurality of (for example, two) preforms P can be gripped.
- the groove 463a is formed along the outer shape of P. By doing so, the number of parts is reduced and the structure is simplified, and a sufficient gripping function can be provided even when the opening / closing angle of the chuck member 436 is small.
- the chuck member 463 may be provided independently for each preform P. *
- a roller 440 is rotatably provided on the chuck connection member 437, and the chuck connection member 437 is in contact with the chuck opening / closing plate 434 via the roller 440.
- the chuck opening / closing plate 434 is provided between the plug fixing plate 433 and the fixing plate 435 so as to be slidable by a predetermined distance in the vertical direction.
- a spring member 441 is provided between the chuck opening / closing plate 434 and the plug fixing plate 433, and the chuck opening / closing plate 434 is normally urged upward by the spring member 441 to abut against the fixing plate 435. It is held in the state.
- an air cylinder 442 is connected to the chuck opening / closing plate 434 (see FIG. 19). By operating the air cylinder 442, the chuck opening / closing plate 434 can slide downward until it comes into contact with the plug fixing plate 434. ing. *
- the chuck connecting member 437 is interlocked with the operation of the chuck opening / closing plate 434 so that the pair of chuck members 436 are opened and closed.
- the chuck opening / closing plate 434 is in the upper standby position by the biasing force of the spring member 441, that is, the plug fixing plate 433 contacts the chuck opening / closing plate 434 via the roller 440.
- the pair of chuck members 436 are closed by spring members (not shown) to grip the neck portion of the preform P from the outside.
- the roller 440 rotates, and a pair of chuck members 436 connected to the chuck member 436 has the shaft member 438.
- the preform P is opened against a spring member (not shown) to release the preform P.
- the chuck opening / closing plate 434 is returned to the upper standby position by the biasing force of the spring member 440, and the chuck member 436 is closed by the spring member (not shown). That is, in a state where no external driving force is applied, the chuck member 436 of the preform conveyance unit 430 is kept closed. Therefore, even if the machine is brought to an emergency stop and the supply of a power source such as air or electricity for each actuator is stopped, the preform once gripped is not dropped. It can be said that this contributes to prevention of machine damage and work safety.
- the opening / closing operation of the chuck member 436 may be performed according to the following example. Specifically, as shown in FIG. 20, in a state where the chuck opening / closing plate 434 is slid downward by the air cylinder 442 and is in contact with the plug fixing plate 433, the pair of chuck members 436 are closed and the preform P of the preform P is closed. Grip the neck from the outside. On the other hand, as shown in FIG. 21, in a state where the chuck opening / closing plate 434 is urged upward by the spring member 441 and abuts against the fixed plate 435, the pair of chuck members 436 is opened and the preform P is released. *
- the preform transport unit 430 includes the gripping mechanism unit 432 together with the suction holding unit 431, so that the preform P injection-molded by the injection molding unit 300 can be more reliably held and the cooling unit 400 can be held. Can be conveyed.
- the suction force of the preform P by the suction holding unit 431 can be weakened. Therefore, it is possible to suppress the dent deformation in the body portion as the preform P is sucked.
- the suction holding portion 431 is fitted inside the neck of the preform P, and the top surface of the preform P is securely connected to the confidential portion of the suction holding portion 431. Can be contacted. Thereby, the trouble at the time of conveyance accompanying the position irregularity (position shift) of the preform P can be reduced markedly.
- 1 blow molding machine 2 machine bases, 10 blow molding part, 11 blow cavity mold, 20 take-out part, 100 delivery unit, 102 rail, 102A, 102B pair of rail members, 110 lifting block, 112 blade, 112A protruding piece, 114 Endless member (belt), 116A to 116C pulley, 142 swinging fulcrum, 144 arm, 150 opening / closing drive part (air cylinder), 200 post-process device (filling device), 202 machine base, 210 transport device, B, B1 ⁇ B3 container (bottle), D1 blow cavity mold opening / closing direction, D2 delivery direction, F flange part, N neck part, P preform
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
ブロー成形機1は、ブロー成形部10と、引渡ユニット100と、ブロー成形部10から引渡ユニット100に向けてボトル(容器)を取り出す取出し部20と、を有する。
2.1.引渡ユニットの構造
図1には、ブロー成形機1とその後工程の例えば充填装置200とが示されている。引渡ユニット100の少なくとも一部は、ブロー成形機1の機台2より図1の矢印D2方向に突出して設けることができ、機台2よりも突出した引渡ユニット100の一部は、充填装置200の機台202の上方まで延出することができる。それにより、ブロー成形機1と充填装置200とを連結する容器搬送装置を追加したり、あるいは充填装置200のうち容器の供給を受ける部分の構造をブロー成形機1側に向けて突出させることを要しない。充填装置200の機台202上には、引渡ユニット100から引き渡されたボトルBを搬送する搬送装置210を設けることができる。
図3及び図4に示すように引渡ユニットが上方の退避位置にある時、取り出し位置まで移動されたアーム21がエアーシリンダー22により開放駆動され、ボトルBはアーム21からレール102に受け渡される。その後、アーム21はブロー成形部10に向けて復帰移動される。
図7(A)(B)は、レール102と羽根112との関係を示している。いずれの場合も、羽根112はレール102と干渉しないことが要求される。図7(A)では、羽根112の下端はレール102の上方にあるので、羽根112はレール102と干渉しない。この場合、羽根112はボトルBのフランジ部Fよりも上方のネック部Nを押動する。図7(B)では、羽根112は一対のレール部材102A,102B間に挿入される突出片112Aを含む。この場合、羽根112は突出片112AにてボトルBのフランジ部Fを押動する。こうすると、レール102上を走行されるフランジ部F自体を押動するので、図7(A)よりもボトルBに作用するモーメントが少なく、ボトルBの走行姿勢はさらに安定する。
図8は、レール102を支持する機構の一例を示している。図8において、2つのアーム支持板140はブロー成形機1に固定されている。この2つのアーム支持板140にそれぞれ設けられた揺動支点142を中心として揺動可能な略L字状のアーム144の自由端部に、一対のレール部材102A,102Bの一つが固定されている。
図8に示すように、一対のレール部材102A,102Bの各々は、アーム144に固定された開閉駆動部例えばエアーシリンダー150により進退駆動されるロッド151に固定することができる。こうすると、一対のレール部材102A,102Bを矢印D4方向に開閉移動させることができる。
ところで、引渡ユニット100が上方の退避位置にある状態においては(図3参照)、レール102に支持されたボトルBが、静電気によって引っ張られて位置ずれが生じてしまう虞がある。例えば、ブローキャビティ型11等で生じる静電気によって、ボトル引渡方向D2とは逆方向(ブローキャビティ型11側)に引っ張られて位置ずれが生じる虞がある。ボトルBの位置ずれが生じると、複数の羽根112によってボトルBを適切に搬送できない虞がある。
上述した引渡ユニット100を有するブロー成形機1の一例を図12に示す。ただし、図12では引渡ユニット100は省略されている。プリフォームPの射出成形工程、冷却工程、加熱工程、ブロー成形工程及び取り出し工程の概略の搬送動作を、図12を参照して説明する。なお、図12に示す装置の詳細はWО2012-057016に開示されているものと同一である。また、図12中の矢印に付した符号のうち、矢印I1~I8はそれぞれ間欠搬送を意味し、矢印C1~C3は連続搬送を意味する。すなわちブロー成形機1は、各プリフォームPを搬送路に沿って連続搬送する連続搬送部と、所定個数のプリフォームPを搬送路に沿って間欠搬送する間欠搬送部とを含む搬送部を備えている。
Claims (11)
- 型締めされたブローキャビティ型内にて複数の容器をブロー成形するブロー成形部と、
ブロー成形ピッチを維持して前記複数の容器を保持し、型開きされた前記ブローキャビティ型から前記ブローキャビティ型外の取出し位置に前記複数の容器を取り出す取出し部と、
を有するブロー成形機であって、
前記取り出し位置にある前記複数の容器を前記ブロー成形機の後工程に引き渡す引渡ユニットをさらに有し、
前記引渡ユニットは、
前記複数の容器を保持して引渡案内するレールと、
前記レールに対して昇降される昇降ブロックと、
を含み、
前記昇降ブロックは、
複数の羽根と、
前記複数の羽根が前記ブロー成形ピッチで固定される無端状部材と、
前記無端状部材を走行駆動させる駆動部と、
を含むことを特徴とするブロー成形機。 - 請求項1に記載のブロー成形機おいて、
前記ブロー成形部が搭載される機台をさらに有し、
前記引渡ユニットは、前記ブローキャビティ型の開閉方向と直交する容器引渡方向に沿って、前記機台より突出していることを特徴とするブロー成形機。 - 請求項2に記載のブロー成形機おいて、
前記レールは、前記複数の容器の各々のネック部を上向きとした正立状態にて、前記ネック部に設けられたフランジ部を下方から支持する、前記容器搬送方向に沿って配置される一対のレール部材を含み、
前記複数の羽根の各々は、前記ネック部を押動することを特徴とするブロー成形機。 - 請求項3に記載のブロー成形機において、
前記複数の羽根の各々は、前記一対のレール部材の間に挿入される突出片を含み、前記突出片は前記フランジ部を押動することを特徴とするブロー成形機。 - 請求項3又は4に記載のブロー成形機おいて、
前記一対のレール部材の少なくとも一方を駆動して、前記取り出し位置にて前記複数の容器を落下させるレール駆動部をさらに有することを特徴とするブロー成形機。 - 請求項3から5の何れか一項に記載のブロー成形機において、
前記一対のレール部材は、前記容器引渡方向と平行な前記ブローキャビティ型の搬入出経路と干渉しない位置に退避可能に支持されていることを特徴とするブロー成形機。 - 請求項1から6の何れか一項に記載のブロー成形機において、
前記ブローキャビティ型は、前記ブロー成形ピッチが第1ブロー成形ピッチである第1ブローキャビティ型と、前記ブロー成形ピッチが第2ブロー成形ピッチである第2ブローキャビティ型とに交換可能であり、前記第2ブロー成形ピッチは前記第1ブロー成形ピッチのn(nは2以上の整数)倍であり、
前記複数の羽根は、前記第1ブロー成形ピッチで前記無端状部材に固定されていることを特徴とするブロー成形機。 - 複数個のプリフォームを射出成形する射出成形部と、
前記プリフォームを所定個数ずつ容器に延伸ブロー成形するブロー成形部と、
を有するブロー成形機であって、
前記所定個数のプリフォームを搬送路に沿って間欠搬送する間欠搬送部を含む搬送部と、
前記間欠搬送部によって前記搬送路を搬送されている前記所定個数のプリフォームを把持して前記ブロー成形部に転送する転送部と、
前記搬送路の前記転送部よりも下流側に設けられて当該搬送路から前記プリフォームを排出する排出部と、
射出成形サイクルタイム又はブロー成形サイクルタイムの少なくとも一方を変更すると共に、この変更に伴って前記搬送部による前記プリフォームの搬送速度を変更する変更手段と、
を有し、
前記変更手段による変更に伴って、前記転送部が前記プリフォームを前記ブロー成形部に転送するタイミングで、前記所定個数のプリフォームのうちの一部が前記転送部を越えてしまう場合、前記搬送部は、当該所定個数のプリフォームを前記排出部まで搬送することを特徴とするブロー成形機。 - 請求項8に記載のブロー成形機において、
前記搬送路を連続搬送されている前記プリフォームを加熱するヒータを備える加熱部を有し、
前記変更手段は、前記ヒータの出力をさらに変更することを特徴とするブロー成形機。 - プリフォームを射出成形する射出成形部と、
前記プリフォームを容器に延伸ブロー成形するブロー成形部と、
を有するブロー成形機であって、
前記射出成形部で射出成形された前記プリフォームを強制冷却する冷却部と、
前記射出成形部で射出成形された前記プリフォームを保持して前記冷却部に搬送するプリフォーム搬送部と、を有し、
前記プリフォーム搬送部は、
前記プリフォームのネック部に挿入される挿入部を有し、該挿入部が前記プリフォームのネック部に挿入された状態で前記プリフォーム内を吸引して保持する吸引保持部と、
開閉可能なチャック部を備え、前記挿入部が挿入された前記プリフォームのネック部を外側から狭持する狭持機構部と、有することを特徴とするブロー成形機。 - 請求項10に記載のブロー成形機において、
前記プリフォーム搬送部は、前記把持機構部によって前記プリフォームが把持されると、前記吸引保持部による前記プリフォーム内の吸引を停止することを特徴とする射出延伸ブロー成形機。
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CN104057601A (zh) * | 2014-07-11 | 2014-09-24 | 金准(福建)精密机械工业有限公司 | 吹瓶机 |
US20220063171A1 (en) * | 2018-12-19 | 2022-03-03 | Sidel Participations | Device for conveying preforms and method for controlling such a device in order to angularly index the preforms in a reference position |
WO2021221022A1 (ja) * | 2020-04-27 | 2021-11-04 | 日精エー・エス・ビー機械株式会社 | 型開閉装置および型開閉装置の制御方法 |
JP7434536B2 (ja) | 2020-04-27 | 2024-02-20 | 日精エー・エス・ビー機械株式会社 | 型開閉装置および型開閉装置の制御方法 |
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CN104540659A (zh) | 2015-04-22 |
EP2886297A4 (en) | 2016-09-07 |
EP2886297B1 (en) | 2018-08-01 |
US9446552B2 (en) | 2016-09-20 |
CN107031024A (zh) | 2017-08-11 |
TWI624348B (zh) | 2018-05-21 |
JP2016168857A (ja) | 2016-09-23 |
JPWO2014030639A1 (ja) | 2016-07-28 |
EP2886297A1 (en) | 2015-06-24 |
US20150231816A1 (en) | 2015-08-20 |
TR201815293T4 (tr) | 2018-11-21 |
EP3406418A1 (en) | 2018-11-28 |
CN104540659B (zh) | 2016-11-16 |
JP6150410B2 (ja) | 2017-06-21 |
JP5967732B2 (ja) | 2016-08-10 |
TW201429672A (zh) | 2014-08-01 |
CN107031024B (zh) | 2019-06-07 |
EP3406418B1 (en) | 2020-09-30 |
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