WO2005016614A1 - Mold mounted drop cylinder assembly - Google Patents
Mold mounted drop cylinder assembly Download PDFInfo
- Publication number
- WO2005016614A1 WO2005016614A1 PCT/US2003/024017 US0324017W WO2005016614A1 WO 2005016614 A1 WO2005016614 A1 WO 2005016614A1 US 0324017 W US0324017 W US 0324017W WO 2005016614 A1 WO2005016614 A1 WO 2005016614A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- rod
- knockout
- actuator
- cavity
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/70—Removing or ejecting blown articles from the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/70—Removing or ejecting blown articles from the mould
- B29C2049/701—Ejecting means
- B29C2049/707—Hydraulic driving 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/44—Removing or ejecting moulded articles
Definitions
- the invention relates to blow molding machines. More particularly, the invention relates to systems for removing molded products from blow molding machine molds.
- Many plastic containers are produced today using blow mold techniques.
- Many blow mold machines are provided with systems for removing the molded products from the mold after molding. Some of these systems include knockout heads that are pushed against a waste portion of the molded product as the molds are opened to push the molded product away from the mold.
- knockout heads that are pushed against a waste portion of the molded product as the molds are opened to push the molded product away from the mold.
- Various problems can result from molded products that are released from the mold in anything other than an ideal fashion. These problems can be particularly severe in a dual parison molding process.
- each mold contains, for example, two parallel mold cavities in which molded products are simultaneously created. Proper, controlled release of the molded products from dual parison blow mold machines is particularly important.
- the invention provides a solution to the above described problems by providing a system for removing a molded product from a mold of a blow molding machine, the mold having a first half with first and second knockout heads.
- the system has a first rod for engaging the first knockout head, a second rod for engaging the second knockout head, and a first actuator that engages the first and second rods and positively controls movement of the first and second rods in a first direction and a second direction opposite the first direction.
- the first rod, the second rod and the first actuator are for mounting on the first half of the mold such that the first rod, the second rod and the first actuator move with the first half of the mold when the mold is in operation.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
- FIG. 1 A method of removing a molded product from a mold of a blow molding machine, the mold having a first half with first and second knockout heads.
- the method includes engaging the first knockout head with a first rod mounted on the first half of the mold, engaging the second knockout head with a second rod mounted on the first half of the mold, engaging the first and second rods with a first actuator mounted on the first half of the mold; and with the first actuator, positively controlling movement of the first and second rods in a first direction and a second direction opposite the first direction.
- Figure 1 is a top view of a first embodiment of the invention in a retracted position
- Figure 2 is a top view of the embodiment shown in Figure 1 in an extended position
- Figure 3 is a side view of an embodiment of the invention using two of the embodiments shown in Figures 1 and 2
- Figure 4 is an embodiment of the invention using two of the embodiments shown in Figure 3.
- FIG. 1 is a top view of a dual-rod actuator assembly 10 in accordance with the invention.
- Figure 1 shows actuator assembly 10 in a retracted position.
- Actuator assembly 10 would take the retracted position during the moldmg process when the mold halves are closed.
- Actuator assembly 10 has an actuator 100 fixed to a support frame 130.
- Actuator 100 has a first inlet 110 and a second inlet 120 through which a pressurized fluid (air, oil, etc.) is introduced to, and removed from, actuator 100 to cause actuator shaft 140 to move side to side in Figure 1.
- Actuator shaft 140 is attached to a tie bar 200 by, for example, a nut 150.
- tie bar 200 also moves.
- a first knockout rod assembly 300 and a second knockout rod assembly 400 are each fixed to tie bar 200 at one end.
- First knockout rod assembly 300 has a first knockout rod 310 which is attached to tie bar 200 at one end and has a first knockout head 320 at its other end.
- First knockout head 320 is attached to first knockout rod 310 by, for example, a threaded connection.
- a depression or hole 330 can be provided in first knockout head 320 to facilitate gripping first knockout head 320 during assembly with first knockout rod 310.
- second knockout rod assembly 400 has a second knockout rod 410 that is attached to tie bar 200 at one end and has a second knockout head 420 at its other end.
- Second knockout head 420 is attached to second knockout rod 410 by, for example, a threaded connection.
- a depression or hole 430 can be provided in first knockout head 420 to facilitate gripping first knockout head 420 during assembly with first knockout rod 410.
- Figure 2 shows actuator assembly 10 in an extended position such as the position used to push molded products from a mold after formation, hi one application, support frame 130 is fixed to mold half (shown in Figure 4) such that movement of tie bar 200 and rod assemblies 300, 400 relative to actuator 100 results in movement of knockout heads 320, 420 relative to the mold half.
- tie bar 200 is moved relative to actuator 100 (to the left in Figure 2).
- knockout rods 310, 410 and, therefore, knockout heads 320, 420 to move relative to actuator 100 (also to the left in Figure 2).
- actuator assembly 10 As support frame 130 is fixed to a mold half, movement of actuator assembly 10 from the position shown in Figure 1 to the position shown in Figure 2 causes knockout heads 320, 420 to press against waste portions of a molded product in the mold.
- the mold In dual parison molding the mold has two mold cavities. Each mold cavity forms a log containing at least one molded product. Each log usually has a waste portion at each of its ends against which knockout heads can act. As a result, a dual parison mold will usually use four knockout heads on each half of the mold.
- FIG. 3 shows a double dual-rod actuator assembly 20 in accordance with the invention.
- Assembly 20 includes two dual-rod actuator assemblies 10, 10' as shown in Figure 1.
- Dual-rod actuator assemblies 10, 10' are shown in side elevation view in Figure 3.
- Elements 100', 110', 120', 130', 200', 400' and 420' of dual-rod actuator assembly 10' correspond to the similarly numbered elements of dual-rod actuator assembly 10.
- First inlet 110 of actuator assembly 10 and first inlet 110' of actuator assembly 10' are connected to a first inlet supply 114 by first inlet hoses 112, 112', respectively.
- second inlet 120 of actuator assembly 10 and second inlet 120' of actuator assembly 10' are connected to a second inlet supply 124 by second inlet hoses 120, 120'.
- double dual-rod actuator assembly 20 is fixed to one half of a mold. As shown in Figure 4, double dual-rod actuator assembly 20 is fixed to first mold half 32 of a mold 30. Similarly, a second double dual-rod actuator assembly 20' is fixed to a second mold half 34 of mold 30.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03818201A EP1651414A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
US10/494,436 US20050023732A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
BRPI0318445-5A BR0318445A (en) | 2003-08-01 | 2003-08-01 | mold mounted fall cylinder assembly |
CA002534631A CA2534631A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
AU2003257972A AU2003257972A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
PCT/US2003/024017 WO2005016614A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2003/024017 WO2005016614A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005016614A1 true WO2005016614A1 (en) | 2005-02-24 |
Family
ID=34192536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/024017 WO2005016614A1 (en) | 2003-08-01 | 2003-08-01 | Mold mounted drop cylinder assembly |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050023732A1 (en) |
EP (1) | EP1651414A1 (en) |
AU (1) | AU2003257972A1 (en) |
BR (1) | BR0318445A (en) |
CA (1) | CA2534631A1 (en) |
WO (1) | WO2005016614A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103438751B (en) * | 2013-09-12 | 2015-12-30 | 广州白云山医药集团股份有限公司白云山化学制药厂 | Four-way divides water ring |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3495301A (en) * | 1967-06-23 | 1970-02-17 | Phillips Petroleum Co | Tube expanding apparatus |
US3669598A (en) * | 1969-11-26 | 1972-06-13 | Phillips Petroleum Co | Apparatus for molding and ejecting plastic articles |
US3749538A (en) * | 1971-04-20 | 1973-07-31 | V Rudnev | Apparatus for making hollow mould cores |
US5256364A (en) * | 1990-02-05 | 1993-10-26 | Richard Herbst | Process for demolding a molded part as well as a device for carrying out the process |
US5308237A (en) * | 1992-07-06 | 1994-05-03 | Star Container, Inc. | Container ejection system |
US6042360A (en) * | 1996-05-28 | 2000-03-28 | Isap Omv Group Spa | Method and apparatus for withdrawing and processing thermoformed objects from a thermoforming machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3211815A (en) * | 1962-03-05 | 1965-10-12 | Purex Corp Ltd | Molded bottle ejection apparatus and method |
US5480607A (en) * | 1993-03-22 | 1996-01-02 | Hobson; Gerald R. | Method and apparatus for molding plastic products with flash removed |
US6923933B2 (en) * | 2003-03-21 | 2005-08-02 | Graham Engineering Corp. | Take-out device for rotary blow molding machine and method |
-
2003
- 2003-08-01 BR BRPI0318445-5A patent/BR0318445A/en not_active IP Right Cessation
- 2003-08-01 WO PCT/US2003/024017 patent/WO2005016614A1/en active Application Filing
- 2003-08-01 CA CA002534631A patent/CA2534631A1/en not_active Abandoned
- 2003-08-01 US US10/494,436 patent/US20050023732A1/en not_active Abandoned
- 2003-08-01 EP EP03818201A patent/EP1651414A1/en not_active Withdrawn
- 2003-08-01 AU AU2003257972A patent/AU2003257972A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3495301A (en) * | 1967-06-23 | 1970-02-17 | Phillips Petroleum Co | Tube expanding apparatus |
US3669598A (en) * | 1969-11-26 | 1972-06-13 | Phillips Petroleum Co | Apparatus for molding and ejecting plastic articles |
US3749538A (en) * | 1971-04-20 | 1973-07-31 | V Rudnev | Apparatus for making hollow mould cores |
US5256364A (en) * | 1990-02-05 | 1993-10-26 | Richard Herbst | Process for demolding a molded part as well as a device for carrying out the process |
US5308237A (en) * | 1992-07-06 | 1994-05-03 | Star Container, Inc. | Container ejection system |
US6042360A (en) * | 1996-05-28 | 2000-03-28 | Isap Omv Group Spa | Method and apparatus for withdrawing and processing thermoformed objects from a thermoforming machine |
Also Published As
Publication number | Publication date |
---|---|
BR0318445A (en) | 2006-08-01 |
US20050023732A1 (en) | 2005-02-03 |
EP1651414A1 (en) | 2006-05-03 |
CA2534631A1 (en) | 2005-02-24 |
AU2003257972A1 (en) | 2005-03-07 |
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