WO2014208693A1 - プリフォームの加熱装置 - Google Patents
プリフォームの加熱装置 Download PDFInfo
- Publication number
- WO2014208693A1 WO2014208693A1 PCT/JP2014/067054 JP2014067054W WO2014208693A1 WO 2014208693 A1 WO2014208693 A1 WO 2014208693A1 JP 2014067054 W JP2014067054 W JP 2014067054W WO 2014208693 A1 WO2014208693 A1 WO 2014208693A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- preform
- cover member
- heating
- opening
- space
- 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
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/68—Ovens specially adapted for heating preforms or parisons
-
- 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
-
- 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
- B29C49/4252—Auxiliary operations prior to the blow-moulding operation not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D22/00—Producing hollow articles
- B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
-
- 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
-
- 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
-
- 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
-
- 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
- B29C49/6435—Cooling of preforms from the outside
-
- 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
- B29C49/6472—Heating or cooling preforms, parisons or blown articles in several stages
-
- 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
- B29C49/68—Ovens specially adapted for heating preforms or parisons
- B29C49/6845—Ovens specially adapted for heating preforms or parisons using ventilation, e.g. a fan
Definitions
- the present invention relates to a preform heating apparatus that is mounted on, for example, a blow molding apparatus that blow-molds a preform to form a hollow container and heats the preform to a moldable temperature.
- a molding apparatus for forming a hollow container by molding a preform is equipped with a heating device that heats the preform to a moldable temperature.
- This heating device is provided on a conveyance line through which the preform is conveyed, and heats the preform to a predetermined temperature while conveying the preform.
- Such a heating apparatus is provided with various heaters such as an infrared heater, for example, and the preform passing through the apparatus is heated by light (heat) from the heater, and the temperature of the preform is increased by the heater. It is also heated by the atmosphere. *
- the preform may not be heated to an appropriate temperature.
- the atmosphere in the heating device is excessively heated, the preform may not be heated to an appropriate temperature.
- some preform heating devices cool the preform with cooling air and allow the air in the heating device to escape to the outside to suppress an excessive temperature rise in the device.
- some preform heating devices cool the preform with cooling air and allow the air in the heating device to escape to the outside to suppress an excessive temperature rise in the device.
- a wire mesh see Patent Document 1
- JP 2012-245753 A Japanese Examined Patent Publication No. 04-12212
- the present invention has been made in view of such circumstances, and provides a preform heating apparatus capable of efficiently adjusting the temperature of the internal space in which the preform is conveyed with a relatively simple configuration.
- the purpose is to do.
- a first aspect of the present invention that solves the above problem is a heating device that heats a preform conveyed on a conveyance line, the conveyance lines being arranged adjacent to each other in two rows, A cover member provided by closing the upper portion, a heating unit provided in the cover member and having a heater for heating the preform, and a cooling air for cooling the preform is supplied to each cover member. 1, and the heating unit is provided between the rows of the transport lines in each cover member, and the first supply portion is provided between the rows of the transport lines.
- the preform heating apparatus is characterized in that cooling air is introduced into the cover member from the air blowing space through the gap of the heater and is supplied toward the preform. *
- the cover member is provided to face the heater, and cooling air is introduced toward the body of the preform. And a second opening that is provided independently of the first opening and into which cooling air toward the neck of the preform is introduced.
- a discharge path is provided to face the first opening, and to the second opening.
- the preform heating apparatus is provided with a second discharge path independent of the discharge path.
- the preform heating apparatus in the preform heating apparatus according to any one of the first to third aspects, further includes a second supply unit that supplies hot air to the upper space of the cover member. It is in the preform heating device.
- the second supply unit collects the cooling air supplied into the cover member by the first supply unit.
- the preform heating device is re-supplied to the upper space of the cover member.
- the second supply unit supplies the warm air into the cover member along the transport line. It is in the heating apparatus of the characteristic preform.
- the hot air is supplied to the cover member from one end side of the cover member.
- the hot air is discharged from the other end side of the cover member, and the other end side of the cover member has an opening on the upper side, and the hot air discharged from the cover member is discharged from the opening to the outside.
- a preform heating apparatus having an exhaust portion connected thereto.
- the preform heating apparatus can efficiently adjust the temperature of the internal space in which the preform is conveyed with a relatively simple configuration.
- the preform can be efficiently heated by recovering the cooling air supplied into the cover member and supplying it again to the upper space of the cover member.
- the injection molding apparatus 100 cools an injection molding unit 120 that injection-molds a preform 200 (see FIG. 4), and a preform 200 molded by the injection molding unit 120.
- a cooling unit 140, a heating unit (heating device) 160 for heating the preform 200, and a blow molding unit 180 for blow molding the preform 200 arranged in the blow cavity mold are provided.
- the injection molding apparatus 100 includes a transport unit 190 including a loop-shaped transport line 191 that circulates from the cooling unit 140 to the heating unit 160 and the blow molding unit 180.
- the transport unit 190 transports the preform 200 from the cooling unit 140 to the heating unit 160 on the transport line 191 and transports the preform 200 heated by the heating unit 160 to the blow molding unit 180.
- this invention has the characteristics in the structure of the heating part (heating device) 160 with which such an injection molding apparatus 100 is provided.
- Other configurations of the injection molding unit 120, the cooling unit 140, the blow molding unit 180, and the like are well known, and will be briefly described here (if necessary, the international publication WO2013 / 027692 by the present applicant). (Refer to brochures). *
- the injection molding unit 120 includes a mold clamping mechanism 121, and although not illustrated, the core mold disposed above and the cavity mold disposed below are clamped by the mold clamping mechanism 121.
- the preform 200 is injection-molded by filling a resin material (raw material) with an injection device in an injection space defined by the core mold and the cavity mold.
- a maximum of 24 (3 rows ⁇ 8) preforms 200 can be simultaneously molded.
- the cooling unit 140 forcibly cools the injection-molded preform 200.
- the preform 200 injection-molded by the injection molding unit 120 is conveyed from the injection molding unit 120 to the cooling unit 140 by a conveying device (not shown), and is forcedly cooled by the cooling unit 140.
- the preform 200 cooled to a predetermined temperature by the cooling unit 140 is carried out to a transfer line 191 constituting the transfer unit 190 and continuously transferred.
- the preform 200 is molded in an upright state with the neck portion facing upward in the injection molding unit 120, and is conveyed from the injection molding unit 120 to the cooling unit 140 in this state.
- the cooling unit 140 has a reversing mechanism (not shown) that reverses the preform 200 conveyed in an upright state in this way to an inverted state with the neck portion facing downward.
- the preform 200 is inverted by the reversing mechanism while being cooled by the cooling unit 140, and is held by the transport jig 192 provided in the transport unit 190.
- the conveyance line 191 is configured such that a plurality of conveyance jigs 192 are sequentially and sequentially conveyed by the driving force of the sprocket 193 or the like.
- the conveying jig 192 is arranged in a plurality of rows below the cooling unit 140, and the conveying jig 192 holding the preform 200 is sequentially carried out to the conveying line 191. Thereafter, the preform 200 held by the transport jig 192 is transported along the transport line 191 and is transported into the heating unit (heating device) 160.
- the preform 200 held by the transport jig 192 is heated to an appropriate stretching temperature while being moved along the transport line 191.
- the transport unit 190 is configured such that the transport jig 192 moves while rotating on the transport line 191. That is, in the heating unit 160, the preform 200 is heated while rotating. Thereby, in the heating part 160, the preform 200 can be heated to a substantially uniform temperature over the entire circumference.
- the portion of the transport line 191 where the heating unit 160 is provided includes the first linear portion 194 that linearly transports the transport jig 192 in the first direction (upward in the figure), and the first direction.
- a second linear portion 195 that linearly conveys the conveying jig 192 in the opposite direction (downward in the figure), and a curve that is formed in a substantially arc shape and connects the first linear portion 194 and the second linear portion 195.
- Part 196 (see FIG. 1). That is, the first straight line portion 194 and the second straight line portion 195 constituting the transport line 191 are provided adjacent to each other in two rows. *
- the heating unit 160 includes a plurality of (five) heating boxes 161 (161A to 161E) that are provided corresponding to the first linear portion 194 and the second linear portion 195 and in which the heating unit 162 is accommodated. ing.
- the plurality of heating boxes 161 are arranged in two rows in the present embodiment. Specifically, the first and second heating boxes 161A and 161B are juxtaposed with the first linear portion 194 to form the first heating unit 160a, and the third to fifth heating boxes 161C, 161D, and 161E. Are arranged in parallel with the second linear portion 195 to form the second heating unit 160b.
- the heating unit 160 includes an exhaust unit 163 at a position corresponding to the bending unit 196, and the second heating box 161B of the first heating unit 160a and the third heating box 161C of the second heating unit 160b are the exhaust units. They are connected via the unit 163. *
- each heating box 161 (161A to 161E) has a cover member 164 provided to cover at least three sides of both side surfaces sandwiching the transport line 191 and the upper surface facing the transport line 191. That is, a transport space 165 in which the preform 200 is transported is defined by the cover member 164.
- the heating unit 162 is accommodated in the cover member 164.
- each heating unit 162 is installed between the lines of the transport line 191, that is, between the first straight portion 194 and the second straight portion 195. *
- Each heating unit 162 includes a plurality of (seven) heaters (for example, infrared heaters) 166 extending along the transport direction of the preform 200 (hereinafter simply referred to as the transport direction) (see FIG. 4).
- the plurality of heaters 166 are arranged at predetermined intervals in the vertical direction.
- Each heater 166 is provided so as to be movable in a direction orthogonal to the conveying direction in FIG. That is, each heater 166 is configured such that the distance from the preform 200 can be appropriately changed according to the shape of the preform 200 (see FIG. 5). *
- Each preform 200 is heated to the proper stretching temperature by the plurality of heating units 162 by being sequentially conveyed in the conveyance space 165 while rotating in the heating unit 160 having the plurality of heating boxes 161. At that time, the temperature distribution in the axial direction can be imparted to the preform 200 by adjusting the heating temperature of each heater 166 constituting each heating unit 162.
- the heating unit 160 includes a first blower (blower) 167 and a first supply pipe 168 as a first supply unit that supplies cooling air to the conveyance space 165 of each heating box 161.
- Each heating box 161 is configured so that the surface of the preform 200 can be cooled by the cooling air supplied from the first blower 167 to the transfer space 165 through the first supply pipe 168 while the preform 200 is heated.
- a blowing space 169 (169A, 169B, 169C) serving as a cooling air flow path is formed.
- the air blowing space 169A is provided corresponding to the fifth heating box 161E.
- the air blowing space 169B is provided in common to the first heating box 161A and the fourth heating box 161D, and the air blowing space 169C is common to the second heating box 161B and the third heating box 161C. Is provided. That is, the blowing space 169 (169B, 169C) is provided between the lines of the transport line 191 (between the first straight portion 194 and the second straight portion 195).
- a first blower 167 is connected to each of the air blowing spaces 169 via a first supply pipe 168. That is, one end side of the first supply pipe 168 is connected to the first blower 167, and the other end side of the first supply pipe 168 is branched in three directions and connected to the air blowing spaces 169A, 169B, and 169C, respectively. ing. *
- Each air blowing space 169 communicates with the conveyance space 165 through an opening 170 provided in the wall 164a of the cover member 164 on the heating unit 162 side.
- the opening 170 is provided on one end side of the wall 164a in the transport direction.
- the opening 170 (170A to 170E) is formed by bending a part of the wall 164a toward the conveyance space 165 by a predetermined angle so as to open toward the other end of the wall 164a in the conveyance direction. Yes.
- the opening portions 170A and 170B of the first and second heating boxes 161A and 161B are provided to open toward the downstream side in the vicinity of the upstream end portion of the wall portion 164a in the transport direction.
- the openings 170C, 170D, 170E of the third to fifth heating boxes 161C, 161D, 161E are provided in the vicinity of the downstream end of the wall 164a in the transport direction so as to open toward the upstream side. *
- a discharge pipe for discharging the cooling air that has cooled the preform 200 in the transfer space 165 to the outside of the transfer space 165 is provided at a substantially central portion of the wall 164 b opposite to the heating unit 162 of the cover member 164.
- One end of each (discharge path) 171 is connected.
- each preform 200 is cooled.
- the opening 170 is formed by bending a part of the wall 164a by a predetermined angle. For this reason, the cooling air passing through the opening 170 flows into the conveyance space 165 along the bent portion of the wall 164a. That is, an airflow is generated in the transport space 165 from the one end side in the transport direction toward the other end side. Thereby, the several preform 200 conveyed in each conveyance space 165 can be cooled favorably.
- tube 168 and the opening part 170 which connects the ventilation space 169 and the conveyance space 165 are provided in the position relatively distant.
- the connection portion is preferably provided on the other end side of the wall portion 164a.
- the cooling air supplied into the transfer space 165 is supplied from the back side of the heating unit 162 into the transfer space 165 and passes through the gaps of the heaters 166 constituting the heating unit 162.
- the surface of the preform 200 is reached. That is, in the heating unit 160 according to the present embodiment, when the preform 200 is heated to the proper stretching temperature, the surface of the preform 200 is cooled by the cooling air and the surfaces of the heaters are also cooled together.
- the cooling air (warm air) heated by cooling the preform 200 and the like in this manner is then discharged to the outside of the conveyance space 165.
- one end of the discharge pipe 171 is connected to the substantially central portion of the wall 164b opposite to the heating unit 162 of the cover member 164, and the preform 200 and the like are cooled in the transfer space 165 to raise the temperature.
- the cooled air (warm air) is discharged from the discharge pipe 171 to the outside of the transfer space 165.
- the heating unit 160 supplies hot air having a substantially constant temperature to the upper space of the cover member 164, that is, the upper portion of the conveyance space 165 together with the first supply unit that supplies cooling air to the conveyance space 165 of each heating box 161.
- It has the 2nd blower 172 and the 2nd supply pipe 173 as a 2nd supply part.
- the second blower 172 is connected to the other end of each discharge pipe 171.
- the second supply pipe 173 has one end connected to the second blower 172 and the other end connected to the first heating unit 161a constituting the first heating unit 160a and the fifth heating box constituting the second heating unit 160b.
- 161A is connected to the end surface on the opposite side to the exhaust part 163. *
- the airflow space 169 provided between the rows of the conveyance lines, that is, between the first straight part 194 and the second straight part 195, is interposed between the heaters 166.
- the cooling air is supplied into the transfer space 165.
- warm air that has been heated is discharged from the discharge pipe 171
- hot air having a substantially constant temperature is always supplied to the upper portion of the conveyance space 165 regardless of the climate, weather, or the like.
- the warm air flows along the upper surface 164c of the cover member 164 as shown by arrows in FIGS. 3 and 4, flows into the exhaust portion 163 provided in the curved portion 196, and is discharged to the outside.
- the exhaust part 163 forms the exhaust path 174 whose upper part opens.
- the conveyance spaces 165 of the first heating unit 160a and the second heating unit 160b are connected to the exhaust path 174, respectively.
- an exhaust fan 175 for exhaust is provided in an opening portion of the exhaust passage 174.
- the warm air which flowed into the exhaust path 174 from each conveyance space 165 as mentioned above is discharged
- the heating unit 160 can efficiently and appropriately adjust the temperature of the transport space (internal space) 165 in which the preform is transported with a relatively simple configuration.
- the transfer space 165 is formed by closing the upper portion of the transfer line 191 with the cover member 164. That is, an opening for discharging the air in the conveyance space 165 is not formed in the upper portion (top surface) of the cover member 164. For this reason, although the temperature in the conveyance space 165 is easily raised, air (warm air) that has been heated by cooling the preform 200 or the like is likely to accumulate in the upper portion of the conveyance space 165. That is, a so-called heat accumulation is likely to occur in the upper portion of the conveyance space 165. *
- the temperature in the conveying space 165 can be easily raised and heat accumulation can be eliminated.
- heat accumulation can be efficiently eliminated.
- the preform 200 can be appropriately heated, and for example, a temperature distribution can be appropriately provided.
- supplying hot air to the upper part of the transfer space 165 is not supplying outside air whose temperature changes depending on the climate or the like but supplying air (hot air) having a substantially constant temperature regardless of the climate or the like to the upper part of the transfer space 165.
- the temperature variation of the transfer space 165 can be suppressed, so that the temperature variation of the preform 200 can also be suppressed.
- exhaust air (warm air) discharged from inside the transfer space 165 is collected and re-supplied to the upper part of the transfer space 165, so that energy efficiency is further improved and the apparatus is relatively simple.
- the preform 200 is further transported along the transport line 191 and carried into the blow molding unit 180. Specifically, the preform 200 is carried into the reversing unit 185 along the conveyance line 191.
- the preforms 200 held in the inverted state are inverted by a predetermined number (for example, 8 pieces) to be in an upright state, and in this state, are gripped by a transport arm (not shown).
- a predetermined number of preforms 200 are transported by a transport arm to a blow cavity mold 181 comprising a pair of split molds, and the preform 200 is blow-molded by the blow cavity mold 181 to form a hollow container having a desired shape. . *
- FIG. 6 is a cross-sectional view showing the internal structure of the heating apparatus according to the second embodiment.
- symbol is attached
- the heating apparatus 160 is different from that of the first embodiment in the supply path for supplying cooling air toward the preform 200.
- the cover member 164 is provided with a first opening 270A and a second opening 270B that allow the conveyance space 165 and the air blowing space 169 to communicate with each other.
- the first opening 270 ⁇ / b> A is provided at a position corresponding to the heating unit 162, and the second opening 270 ⁇ / b> B is provided below the heating unit 162. From the first opening 270 ⁇ / b> A, cooling air supplied mainly toward the body 200 a of the preform 200 is introduced into the conveyance space 165.
- first opening 270A and the second opening 270B are not particularly limited.
- the first opening 270A and the second opening 270B are constituted by, for example, a plurality of through holes 164a formed in the cover member 164. *
- a light shielding plate 300 is provided for suppressing infrared irradiation to the neck portion 200b of the preform 200 by the heater 166. Furthermore, a discharge pipe 171 is connected to the wall portion of the cover member 264 opposite to the heating unit 162 so as to face the first opening 270A, and the second discharge is faced to the second opening 270B. A tube (second discharge path) 176 is connected. Furthermore, the reflection plate 400 is provided along the wall surface of the wall portion of the cover member 164 opposite to the heating unit 162. *
- the cooling air introduced into the conveyance space 165 from the first opening 270A is mainly supplied to the body portion of the preform 200, and then the cooling air (warm air) is, for example, a reflector. 400 passes through the space in the vertical and horizontal directions of 400 and is mainly discharged from the discharge pipe 171 to the outside.
- the cooling air introduced from the second opening 270 ⁇ / b> B is mainly supplied to the neck portion 200 b of the preform 200, and is then discharged mainly from the second discharge pipe 176 to the outside.
- the heating part 160 which concerns on this embodiment, it was made to supply cooling air in the conveyance space 165 from the ventilation space 169 via 1st and 2nd opening part 270A, 270B.
- the temperature adjustment of the conveyance space in which the preform is conveyed can be efficiently performed with a relatively simple configuration.
- the light shielding plate 300 is installed in the conveyance space 165 so that the neck portion 200b of the preform 200 is not heated by infrared irradiation, and the reflection plate 400 is installed so that the body portion 200a can be effectively heated. .
- the preform 200 can be heated more appropriately while the neck portion 200b and the conveying jig 192 are heated to a high temperature, that is, deformation of the neck portion 200b is suppressed.
- the second supply unit collects the warm air discharged from the transfer space 165 and re-supplyes the warm air to the upper portion of the transfer space 165.
- the configuration is not limited.
- the second supply unit may supply warm air, which is obtained by warming the outside air to a predetermined temperature, to the upper portion of the transport space 165 without collecting the warm air in the transport space 165.
- the second supply unit supplies hot air to the upper portion of the transfer space 165 along the transfer line 191.
- the direction of supplying the hot air is not particularly limited. The direction perpendicular to the transport line 191 may be used. *
- the warm air supplied from one end side of the transfer space 165 is discharged to the outside from the exhaust part 163 provided on the other end side of the transfer space 165. Is not particularly limited. *
- the heating unit 160 may not necessarily include the second supply unit. That is, it is not always necessary to supply hot air to the upper part of the conveyance space 165.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
図1に示すように、本実施形態に係る射出成形装置100は、プリフォーム200(図4参照)を射出成形する射出成形部120と、射出成形部120で成形されたプリフォーム200を冷却する冷却部140と、プリフォーム200を加熱する加熱部(加熱装置)160と、ブローキャビティ型内に配されたプリフォーム200をブロー成形するブロー成形部180と、を備えている。
図6は実施形態2に係る加熱装置の内部構造を示す断面図である。なお実施形態1の加熱装置と同一の部材には、同一符号を付し、重複する説明は省略する。
120 射出成形部
121 型締め機構
140 冷却部
160 加熱部
161 加熱ボックス
162 加熱ユニット
163 排気部
164 カバー部材
165 搬送空間
166 ヒータ
167 第1のブロワ
168 第1の供給管
169 送風空間
170 開口部
171 排出管(排出路)
172 第2のブロワ
173 第2の供給管
174 排気路
175 送風ファン
176 第2の排出管(第2の排出路)
180 ブロー成形部
181 ブローキャビティ型
185 反転部
190 搬送部
191 搬送ライン
192 搬送治具
193 スプロケット
194 第1の直線部
195 第2の直線部
196 湾曲部
200 プリフォーム
270A 第1の開口部
270B 第2の開口部
300 遮光板
400 反射板
Claims (7)
- 搬送ライン上を搬送されるプリフォームを加熱する加熱装置であって、
前記搬送ラインが二列に隣接して並設され、
各搬送ラインの上部を塞いで設けられるカバー部材と、
前記カバー部材内に設けられて前記プリフォームを加熱するヒータを有する加熱ユニットと、
前記プリフォームを冷却するための冷却風を各カバー部材内に供給する第1の供給部と、を有し、
前記加熱ユニットは、各カバー部材内の前記搬送ラインの列間側にそれぞれ設けられ、
前記第1の供給部は、前記搬送ラインの列間に設けられた送風空間から前記ヒータの隙間を介して前記カバー部材内に冷却風を導入して前記プリフォームに向かって供給する
ことを特徴とするプリフォームの加熱装置。 - 請求項1に記載のプリフォームの加熱装置において、
前記カバー部材は、前記ヒータに対向して設けられ前記プリフォームの胴部に向かう冷却風が導入される第1の開口部と、該第1の開口部とは独立して設けられ前記プリフォームのネック部に向かう冷却風が導入される第2の開口部と、を備えている
ことを特徴とするプリフォームの加熱装置。 - 請求項2に記載のプリフォームの加熱装置において、
前記第1の開口部に対向して排出路が設けられていると共に、前記第2の開口部に対向して前記排出路とは独立する第2の排出路が設けられている
ことを特徴とするプリフォームの加熱装置。 - 請求項1~3の何れか一項に記載のプリフォームの加熱装置において、
前記カバー部材の上部空間に温風を供給する第2の供給部をさらに備える
ことを特徴とするプリフォームの加熱装置。 - 請求項4に記載のプリフォームの加熱装置において、
前記第2の供給部は、前記第1の供給部によって前記カバー部材内に供給された前記冷却風を回収して前記カバー部材の上部空間に再供給することを特徴とするプリフォームの加熱装置。 - 請求項4又は5に記載のプリフォームの加熱装置において、
前記第2の供給部は、前記搬送ラインに沿って前記温風を前記カバー部材内に供給することを特徴とするプリフォームの加熱装置。 - 請求項4~6の何れか一項に記載のプリフォームの加熱装置において、
前記カバー部材には、当該カバー部材の一端側から前記温風が供給されると共に、前記カバー部材の他端側から前記温風が排出され、
前記カバー部材の他端側には、上方に開口部を有し前記カバー部材から排出された前記温風を前記開口部から外部に排出する排気部が接続されていることを特徴とするプリフォームの加熱装置。
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CN201480037024.2A CN105339158B (zh) | 2013-06-28 | 2014-06-26 | 预制件的加热装置 |
JP2015524120A JP6085894B2 (ja) | 2013-06-28 | 2014-06-26 | プリフォームの加熱装置 |
US14/901,452 US9884445B2 (en) | 2013-06-28 | 2014-06-26 | Preform heating apparatus |
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DE102014006275A1 (de) * | 2014-05-02 | 2015-11-19 | Khs Corpoplast Gmbh | Verfahren und Vorrichtung zum Temperieren von Vorformlingen |
DE102017112455A1 (de) | 2017-06-06 | 2018-12-06 | Krones Ag | Vorrichtung und Verfahren zum Behandeln und insbesondere Transportieren von Kunststoffvorformlingen |
WO2019069149A1 (en) * | 2017-10-04 | 2019-04-11 | Khakharia Samir V | APPARATUS FOR HEATING PREFORMS OF PLASTIC IN A BLOW MACHINE |
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DE102018111235A1 (de) | 2018-05-09 | 2019-11-14 | Krones Ag | Vorrichtung zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit entkoppelten Antrieben |
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IT201900015599A1 (it) * | 2019-09-04 | 2021-03-04 | Gea Procomac Spa | Apparato e procedimento di formatura per formare contenitori a partire da preforme realizzate in materiale termoplastico |
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TW201520027A (zh) | 2015-06-01 |
CN105339158A (zh) | 2016-02-17 |
US20160368197A1 (en) | 2016-12-22 |
CN105339158B (zh) | 2017-06-09 |
TWI574820B (zh) | 2017-03-21 |
JPWO2014208693A1 (ja) | 2017-02-23 |
US9884445B2 (en) | 2018-02-06 |
JP6085894B2 (ja) | 2017-03-01 |
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