WO2003049919A1 - Method and device for manufacturing bellows tube - Google Patents
Method and device for manufacturing bellows tube Download PDFInfo
- Publication number
- WO2003049919A1 WO2003049919A1 PCT/JP2002/012865 JP0212865W WO03049919A1 WO 2003049919 A1 WO2003049919 A1 WO 2003049919A1 JP 0212865 W JP0212865 W JP 0212865W WO 03049919 A1 WO03049919 A1 WO 03049919A1
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- WIPO (PCT)
- Prior art keywords
- mold block
- mold
- block row
- unit
- bellows tube
- 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
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
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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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
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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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92933—Conveying, transporting or storage of 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/30—Mounting, exchanging or centering
- B29C33/308—Adjustable moulds
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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
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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
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0025—Making articles of indefinite length, e.g. corrugated tubes subsequent mould cavities being different, e.g. for making bells
-
- 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
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0027—Making articles of indefinite length, e.g. corrugated tubes involving the change of moulds, e.g. in production processes without interrupting the production processes
-
- 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
- B29C49/04—Extrusion 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
- B29C49/78—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2016/00—Articles with corrugations or pleats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
- B29L2023/183—Pleated or corrugated hoses partially
Definitions
- the present invention relates to a bellows tube manufacturing method and apparatus.
- the present invention relates to a method and an apparatus for manufacturing a bellows tube made of resin used for a fuel pipe or a hydraulic pneumatic pipe of an automobile or the like.
- Figure 5 shows a bellows tube made of resin.
- the bellows tube 2 made of resin is often used as a tube for a fuel pipe or the like incorporated in a narrow space of an automobile body because the tube itself has high strength and corrosion resistance and is easily bent.
- This type of bellows tube 2 is usually a tube in which a bellows portion 3 consisting of a bellows-shaped tube and a straight tube portion 4 consisting of a straight tube for attaching a fitting 5 are integrated. is there.
- a bellows portion 3 consisting of a bellows-shaped tube and a straight tube portion 4 consisting of a straight tube for attaching a fitting 5 are integrated.
- it is necessary to fix the bellows part 3 with a clip or the like and there is also a bellows tube in which a straight pipe part 4 is formed in the bellows part 3.
- the bellows tube 2 typically includes bellows-shaped element A (FIG. 6 (a)) and straight pipe-shaped element B (FIG. 6 (b)). There is a shape element C (FIG. 6 (c)) in which the end of the bellows is a straight pipe, and a shape element D (FIG. 6 (d)) in which both sides of the straight pipe are bellows.
- a shape element C FIG. 6 (c)
- D shape element in which both sides of the straight pipe are bellows.
- the bellows tube 2 is manufactured by forming a mold by combining a mold block corresponding to the above-mentioned shape element, and extruding a resin of a material into the mold.
- FIG. 7 is a diagram showing a conventional extrusion molding method for producing the bellows tube 2.
- FIG. 7 A typical example of the prior art relating to this is disclosed in Japanese Patent Publication No. 7-52081 (corresponding to US Pat. No. 5,466,771).
- reference numeral 10 denotes a lower mold block
- 12 denotes an upper mold block.
- the lower mold block 10 and the upper mold block 12 each have a semi-cylindrical molding surface. Therefore, when moving in the molding zone, the lower mold work 10 and the upper mold work 12 move linearly in a state where the mold is clamped.
- An extrusion die 14 extrudes molten resin supplied from an extruder (not shown).
- the extrusion die 14 is arranged at the entrance of the molding zone, and extrudes the molten resin between the lower mold block 10 and the upper mold block 12 which are in the state immediately before closing from the open state.
- vacuum is drawn so that a negative pressure is generated on the molding surfaces of the lower mold block 10 and the upper mold block 12 respectively, and the extruded molten resin adheres to the molding surface, and irregularities are formed.
- the lower mold block 10 and the upper mold block 12 open, and the molded tube is released.
- unit mold blocks of shape elements set in advance as shown in FIG. 7 in accordance with the bellows pattern of the product.
- These unit mold blocks are arranged in the same arrangement in the lower mold block 10 and the upper mold block 12 and are connected in a ring shape.
- the setup had to be changed and the unit mold block had to be rearranged according to the bellows pattern. Since this arrangement involves a change in the arrangement of the unit mold blocks due to the change in the bellows pattern, the unit mold blocks need to be removed and attached repeatedly to reassembly them in a ring according to the new bellows pattern arrangement.
- the extruder is stopped for the change of the setup, so the idle time is in between.
- the resin often stays inside the barrel or extrusion die of the extruder during the stop, and deteriorates in many cases.
- an object of the present invention is to solve the above-mentioned problems of the prior art and to make it possible to change the arrangement pattern of the mold block without changing the arrangement of the mold block in accordance with the change of the specification of the bellows tube,
- the present invention provides a plurality of types of units arranged in accordance with the specifications of the bellows tube using a half-shaped unit mold block corresponding to each unit shape element of the bellows tube.
- a method for manufacturing a bellows tube by extrusion molding wherein the number of each type of the unit mold blocks forming the first mold block row and the second mold block row corresponding to the shape of the bellows tube.
- the necessary unit mold blocks are selected and the first mold block Knitting the second mold block row and transferring it to a molding zone; extruding a molten resin between the first mold block row and the second mold block row from an extrusion die of an extruder; Generating a negative pressure inside the closed mold while moving the first mold block row and the second mold block row in the same direction to form the bellows tube; And distributing each of the first mold block row and the second mold block row that are obtained into an array according to the type of the unit mold block.
- the manufacturing apparatus uses a half-shaped unit mold block corresponding to each unit shape element of the bellows tube, and arranges according to the specification of the bellows tube.
- a first mold block row composed of a plurality of types of unit mold blocks, and the same unit module as the first mold block row.
- a bellows tube manufacturing apparatus for forming a mold from a second mold block row comprising an array of field blocks and forming the bellows tube by extrusion molding, wherein the first mold block row and the first mold block row are formed by extrusion molding;
- the second mold block row has an inlet that is introduced while closing the mold and an outlet that is opened while releasing the mold to release the molded product, and forms a negative pressure inside the closed mold.
- An extruder having an extrusion die disposed in the vicinity of the entrance of the molding zone, and extruding molten resin from the extrusion die between the first mold block row and the second mold block row.
- a plurality of types of the unit mold blocks are arranged in accordance with a specified knitting pattern, and the first mold block row and the second mold block row to be sent to the molding zone are knitted.
- a transfer means for circulating and moving the first mold block train and the second mold block train between the knitting means and the molding zone. is there.
- an internal pressure may be applied to the extruded resin from the inside instead of generating a negative pressure inside the mold in order to bring the extruded resin into close contact with the mold.
- the knitting means includes: a mold block store section that temporarily stores the unit mold blocks in a manner that is aligned with each type; the first mold block row returned from the molding zone; Sort means for identifying the type of each unit mold block from each of the second mold block rows and sorting the unit mold blocks back to the mold block store section, and the mold block store according to a specified knitting pattern; And a knitting pattern designating means for selecting a required unit mold block from the section and arranging the first mold block row and the second mold block row, and giving a command for designating the knitting pattern to the arranging means. , And.
- the knitting pattern designating means includes a plurality of types of knitting patterns created in advance, and the knitting pattern designating means selects the knitting pattern corresponding to the shape of the bellows tube from the knitting pattern data. It is characterized by doing. Further, an identification mark is affixed to the unit mold block, and the sorting unit is configured to sort the unit mold block into an array according to the type of the unit mold block. It is characterized by having a detection sensor for identifying another sign.
- FIG. 1 is a configuration explanatory view of a bellows tube manufacturing apparatus according to one embodiment of the present invention.
- FIG. 2 is a configuration block diagram of a knitting portion of the bellows tube manufacturing apparatus according to the embodiment.
- FIG. 3 is an explanatory diagram showing an example of a knitting pattern of a mold block row.
- FIG. 4 is a side view showing a bellows tube.
- FIG. 5 is a configuration block diagram of a bellows tube manufacturing apparatus according to another embodiment.
- FIG. 6 is a diagram showing shape elements of a bellows tube.
- FIG. 7 is an explanatory diagram showing a main part of a bellows tube manufacturing apparatus according to a conventional technique.
- FIG. 1 is a schematic diagram showing a forming part of the bellows tube manufacturing apparatus according to the present embodiment.
- reference numeral 20 indicates the entire first mold block row
- reference numeral 22 indicates the entire second mold block row.
- FIG. 2 is a block diagram showing the configuration of the knitting unit 30 that knits the first mold block row 20.
- the configuration of the knitting part for knitting the second mold block row 22 is the same, and is not shown in FIG.
- the first mold block row 20 and the second mold block 22 are arranged in a row with half-shaped unit mold blocks MB corresponding to the bellows-shaped element of the bellows tube shown in FIG. It was done.
- the unit mold block MB needs to correspond to the bellows-shaped element in Fig. 6, the unit mold block corresponding to the bellows-shaped element A in Fig.
- the unit mold blocks corresponding to the shape elements B, C, and D are similarly distinguished by adding suffixes b, c, and d to the reference numbers.
- the unit mold block MBa of the first mold block row 20 Together with the unit mold block MBa of the mold block row 22 of this embodiment, a mold for forming one bellows-shaped element A is constituted.
- the unit mold block MBb of the first mold block row 20 and the unit mold block MBb of the second mold block row 22 constitute a mold for forming a shape element B having a straight shape.
- the arrangement order of the unit mold blocks MB is the same.
- the first mold block row 20 and the second mold block row 22 are attached to a belt or a chain (not shown) and are conveyed in the same direction at the same speed as indicated by arrows. Then, a pair of unit mold blocks MB are gradually introduced into the inlet 24 a of the molding zone 24 while closing the mold, and form a continuous mold overlapping with each other in the molding zone 24. From the outlet 24 b of the molding zone 24, the unit mold block MB is drawn out while the mold is opened in order to release the formed bellows tube 100.
- An extrusion die 25 is arranged near the inlet 24 a of the molding zone 24.
- An extruder 26 is connected to the extrusion die 25, and the molten tree B, which is sent under pressure from the extruder 26, is formed by the first die block row 20 and the second mold block row from the extrusion die 25.
- the tube is extruded between two and two.
- the unit mold blocks MB and MB in the mold closed state are evacuated by a vacuum pump 27 so that the molten resin can be adhered to the inner peripheral surfaces of the closed unit mold blocks MB and MB.
- reference numeral 30 indicates a knitting section for knitting a first mold block row 20 and a second mold block row 22 by arranging mold blocks according to the specifications of a bellows tube to be manufactured. I have.
- the knitting unit 30 is composed of a mold block store unit 32 for temporarily storing the unit mold block MB in a state where the unit mold blocks MB are arranged by type, and a necessary unit mold block from the mold block store unit 30.
- the MBs are selected and the unit mold blocks MB are arranged in the specified knitting pattern.
- the arrangement section 34 for arranging the MBs and the first mold work row 20 returned from the molding zone 24 are used for each unit mold block.
- K Distributing unit that distributes MBs by type and returns them to the mold block store unit 3 2 36 and a controller 38.
- the mold block store 32 includes four types of unit mold blocks MBa, MBb, MBc, MBd used to configure the first mold block row 20 (these are described above). As shown in Fig. 6, they correspond to the shape elements A to D, respectively. These unit mold blocks MBa, MBb, MBc, and MBd are housed in a line in the same type.
- the arranging section 34 has an arranging device connected to the controller 38, and the controller 38 outputs the number and order of the unit mold blocks MB constituting the first mold block row 20 for each type. A composition command specifying a composition pattern is given to the array unit 34.
- Fig. 3 shows a specific example of this knitting, "turn.”
- Pattern 1 is a pattern for a bellows-shaped tube except that both ends of the tube are straight.
- a mold block MBc is specified at the beginning, followed by a predetermined number of mold blocks MBa according to the length of the bellows portion, and a mold block MBc is specified at the end of the row. Is done.
- Pattern 2 is a pattern in the case of a tube in which one end of the tube is followed by a slate portion for a predetermined length and then becomes bellows, and the other end is straight.
- the mold blocks MBb are continuous as many as the length according to the length of the leading straight portion, followed by the mold blocks MBa as many as the length according to the length of the bellows portion, and at the end.
- Pattern 3 is a pattern similar to pattern 1 in the case of a tube with a straight part in the middle of the bellows.
- a mold block MBc is specified at the beginning, followed by a predetermined number of mold blocks MBa according to the length of the bellows portion up to the straight portion in the middle, and further a straight portion.
- the mold block MBd is followed by a mold block MBa of the bellows portion, and a mold block MBc is designated at the end of the column.
- mold block MBa, MBb, MBc, MBd By arranging by specifying the number, it is possible to form a mold block array corresponding to bellows tubes of any pattern.
- the distributing unit 36 when the knitted mold block row is returned from the molding zone 24 after releasing the molded product, the unit mold block MB a,
- the types of MBb, MBc and MBd are identified, and sorted to each type, and returned to the mold block store 32.
- the unit mold block MBa, MBb, MBc, MBd has an identification mark that can be optically or magnetically identified on its type, and the identification mark is identified by a detection sensor.
- the sorting unit 36 sorts by type and returns it to the array of the type of the mold block store unit 32.
- the distribution unit 36 identifies the unit mold blocks MBa, MBb, MBc, and MBd by the detection sensor, and holds the unit mold blocks MBa, MBb, MBc, and MBd according to their types.
- an industrial robot having a function of returning to the arrangement of the mold block store sections 32 can be used.
- a rail-to-rail crossing point switching mechanism that extends from the distributing section 36 to the mold block store section 32 for each type of unit mold blocks MBa, MBb, MBc, and MBd is provided.
- the unit mold blocks MBa, MBb, MBc, and MBd can be sorted by activating the switching mechanism according to the identification result of the detection sensor. It is.
- the knitting pattern 40 of the unit mold block according to the specification of the bellows tube to be manufactured is input to the controller 38.
- the knitting pattern data 40 those created for some knitting patterns may be stored in advance, and an arbitrary knitting pattern may be designated by the controller 38.
- the array section 34 stores the unit mold blocks MBa, MBb, MBc, MBd of the type aligned in the mold block store section 32.
- the required unit mold blocks are sequentially taken out one by one from the head of the first, and the first mold block row 20 and the second mold block row 22 of the commanded knitting pattern are knitted.
- First knitted mold block row 20 When the second mold block row 22 is sent to the transfer means, the controller 38 drives the transfer means to move the first mold block row 20 and the second mold block row 22 to the molding zone 24 at the same speed. Transfer.
- the molten resin is extruded from the extrusion die 25 of the extruder 26 between the first mold work row 20 and the second mold work row 22, and
- a vacuum is generated by the vacuum pump 27 and a negative pressure is generated inside the mold, and the molten resin is removed from the first mold.
- the bellows tube 100 is formed in close contact with the inner peripheral surfaces of the block row 20 and the second mold block row 22.
- the first mold block row 20 and the second mold block row 22 are opened, and the formed bellows tube 100 is straightened as it is released from the mold. Transferred to
- first mold block row 20 and the second mold block row 22 are respectively returned to the distribution unit 36.
- the sorting unit 36 the first mold block row 20 and the second mold block row 22 are sorted by unit mold block MBa, MBb, MBc, MBd, respectively. It is returned to the type-specific arrangement in the mold block store 32.
- one molding cycle is completed.
- the above-described forming cycle may be repeated with the same knitting pattern of the mold block rows.
- the knitting pattern may be instructed again from the controller 38 to the array section 34.
- the arrangement section 34 changes the knitting of the first mold block row 21 and the second mold block row 22 as instructed, and sends it out to the molding zone 24.
- FIG. 4 is a diagram showing another embodiment of the present invention.
- the difference from the embodiment of FIG. 2 is that instead of performing vacuuming in the molding zone 24, an internal pressure is applied from inside the resin extruded from the extrusion die 25.
- an internal pressure pressurizing section 28 is provided, which is brought into close contact with the inner peripheral surface of the mold block row moving in the molding zone 24 while closing the mold.
- the bellows tube can be molded.
- the method of forming the mold block row is the same as in the first embodiment.
- the present invention it is possible to change the arrangement pattern of the mold block without changing the specifications of the bellows tube without changing the setup, and without stopping the machine,
- the bellows tube can be manufactured continuously by freely changing the arrangement pattern.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002469694A CA2469694A1 (en) | 2001-12-12 | 2002-12-09 | Method of manufacturing bellows tube and bellows tube manufacturing system for carrying out the same |
US10/496,220 US20050012249A1 (en) | 2001-12-12 | 2002-12-09 | Method and device for manufacturing bellows tube |
MXPA04005052A MXPA04005052A (es) | 2001-12-12 | 2002-12-09 | Metodo de fabricacion de tubo de fuelle y sistema de fabricacion de tubo de fuelle para ejecutar el mismo. |
EP02786062A EP1473136A4 (en) | 2001-12-12 | 2002-12-09 | METHOD AND DEVICE FOR PRODUCING A BALE TUBE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-378306 | 2001-12-12 | ||
JP2001378306A JP3883859B2 (ja) | 2001-12-12 | 2001-12-12 | 蛇腹チューブ製造方法および装置 |
Publications (1)
Publication Number | Publication Date |
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WO2003049919A1 true WO2003049919A1 (en) | 2003-06-19 |
Family
ID=19186066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/012865 WO2003049919A1 (en) | 2001-12-12 | 2002-12-09 | Method and device for manufacturing bellows tube |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050012249A1 (ja) |
EP (1) | EP1473136A4 (ja) |
JP (1) | JP3883859B2 (ja) |
CN (1) | CN100354103C (ja) |
CA (1) | CA2469694A1 (ja) |
MX (1) | MXPA04005052A (ja) |
WO (1) | WO2003049919A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006048512B4 (de) * | 2006-10-13 | 2014-03-06 | Ralph Peter Hegler | Vorrichtung zur Herstellung von Verbund-Rohren |
JP6131094B2 (ja) * | 2013-05-09 | 2017-05-17 | 矢崎総業株式会社 | コルゲートチューブ製造装置及びコルゲートチューブ製造方法 |
JP6211386B2 (ja) * | 2013-10-23 | 2017-10-11 | 矢崎総業株式会社 | ハーネス外装保護材の製造方法 |
WO2015127509A1 (en) * | 2014-02-25 | 2015-09-03 | Sns Unicorp Pty. Ltd. | Method and apparatus for forming profiled articles |
CN105690717B (zh) * | 2016-01-29 | 2018-02-06 | 姜维雁 | 密封保温管的制造系统及制造方法 |
DE102016112421B4 (de) * | 2016-07-06 | 2021-10-21 | Schlemmer Gmbh | Corrugator, Extrusionsanlage sowie Verfahren |
CN108859054B (zh) * | 2018-08-07 | 2023-12-05 | 江苏烨欣塑业有限公司 | 一种hdpe农田灌溉管制备方法、hdpe农田灌溉管及制作装置 |
DE102019212130A1 (de) * | 2019-08-13 | 2021-02-18 | Fränkische Industrial Pipes GmbH & Co. KG | Wechselcorrugator |
Citations (3)
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JPS61148036A (ja) * | 1984-12-21 | 1986-07-05 | Takiron Co Ltd | 二重壁管の製造法 |
WO1995001251A1 (en) * | 1993-06-30 | 1995-01-12 | Lupke Manfred Arno Alfred | Method and apparatus for forming a double walled thermoplastic tube with integral bells |
JPH07171882A (ja) * | 1993-10-28 | 1995-07-11 | Tigers Polymer Corp | 可とう性ホースの製造方法および可とう性ホース |
Family Cites Families (9)
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US3286305A (en) * | 1964-09-03 | 1966-11-22 | Rexall Drug Chemical | Apparatus for continuous manufacture of hollow articles |
US3430292A (en) * | 1967-04-28 | 1969-03-04 | Acme Hamilton Mfg Corp | Apparatus for the continuous formation of tubular articles |
US4325685A (en) * | 1980-09-12 | 1982-04-20 | Lupke Manfred Arno Alfred | Apparatus for producing thermoplastic tubing having interchangeable mold blocks |
CA2089183C (en) * | 1991-06-14 | 2000-12-05 | Manfred A. A. Lupke | Travelling mold tunnel apparatus for smooth walled pipe |
US5460771A (en) * | 1992-10-16 | 1995-10-24 | Itt Corporation | Process for producing corrugated multi-layer tubing having layers of differing plastic characteristics |
DE19535231A1 (de) * | 1995-09-22 | 1997-03-27 | Hegler Ralph Peter | Vorrichtung zur Herstellung von Rohren aus thermoplastischem Kunststoff mit Querprofilierung |
DE19914974C2 (de) * | 1999-04-01 | 2001-11-29 | Kirchner Fraenk Rohr | Wechselcorrugator |
CA2271395C (en) * | 1999-05-07 | 2006-07-11 | Manfred A. A. Lupke | Molding apparatus with mold block replacement system |
DE10110775B4 (de) * | 2001-03-07 | 2013-03-14 | Ralph-Peter Hegler | Verfahren und Vorrichtung zur Herstellung von Rohren aus thermoplastischem Kunststoff mit Querprofilierung |
-
2001
- 2001-12-12 JP JP2001378306A patent/JP3883859B2/ja not_active Expired - Fee Related
-
2002
- 2002-12-09 MX MXPA04005052A patent/MXPA04005052A/es active IP Right Grant
- 2002-12-09 CA CA002469694A patent/CA2469694A1/en not_active Abandoned
- 2002-12-09 EP EP02786062A patent/EP1473136A4/en not_active Withdrawn
- 2002-12-09 US US10/496,220 patent/US20050012249A1/en not_active Abandoned
- 2002-12-09 CN CNB028250281A patent/CN100354103C/zh not_active Expired - Fee Related
- 2002-12-09 WO PCT/JP2002/012865 patent/WO2003049919A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61148036A (ja) * | 1984-12-21 | 1986-07-05 | Takiron Co Ltd | 二重壁管の製造法 |
WO1995001251A1 (en) * | 1993-06-30 | 1995-01-12 | Lupke Manfred Arno Alfred | Method and apparatus for forming a double walled thermoplastic tube with integral bells |
JPH07171882A (ja) * | 1993-10-28 | 1995-07-11 | Tigers Polymer Corp | 可とう性ホースの製造方法および可とう性ホース |
Non-Patent Citations (1)
Title |
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See also references of EP1473136A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1473136A1 (en) | 2004-11-03 |
CN100354103C (zh) | 2007-12-12 |
JP3883859B2 (ja) | 2007-02-21 |
MXPA04005052A (es) | 2004-08-19 |
CA2469694A1 (en) | 2003-06-19 |
EP1473136A4 (en) | 2006-03-29 |
JP2003175539A (ja) | 2003-06-24 |
CN1604838A (zh) | 2005-04-06 |
US20050012249A1 (en) | 2005-01-20 |
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