SE530127C2 - Moulding machine, comprises blow moulding devices mounted between moulding tables on injection moulding machine and injection moulding tools mounted on fixed and movable moulding tables - Google Patents

Abstract

The machine comprises one or more blow moulding devices (5) mounted between the moulding tables on an injection-moulding machine frame section or guide (1). The machine includes a fixed front moulding table (2a) and a movable rear moulding table (2b) on which injection-moulding tools (8, 9) are mounted. The blow moulding tools extend parallel to the moulding tables and are mounted above and underneath the core moulds. A combined injection-moulding and blow moulding machine for producing thermoplastic articles comprises one or more blow moulding devices which comprise two or more cores and can be mounted between the moulding tables on an injection-moulding machine frame section or guide. The blow moulding devices are mounted on an injection-moulding machine with horizontal or vertical guides with at least one moulding table. The machine includes at least one fixed front moulding table and one movable rear moulding table on which two or more injection-moulding tools are mounted, each tool comprising at least one pair of tool half-sections mounted in a vertical position on the table and connected to a heating channel system. These tools, which are used to produce the article cores, are positioned horizontally on either side of the centre of the heating channel. The blow moulding tools extend parallel to the moulding tables and are mounted above and underneath the core moulds. The blow moulding tools comprise two or more pairs of tool half-sections and are used for blow moulding the plastic material present inside the injection-moulding tools. Blow moulding is carried out after the tool half-sections have been closed and locked. The core holder table is connected to a heating channel system during blow moulding.

Description

530 12? a. to a hot duct system consisting of one or fl your plastic injection ducts with e.g. conical or cylindrical connections. Blow molds are mounted above and below said blank molds or center molds and can be set up with two or two pairs of mold halves. After the closing of the molding tools, inflation of injection-molded plastic blanks into finished products is performed in said molding tool. The placement of the molding tools on the molding tables allows an adjustable and efficient cooling of said molding tool. Said molding tool can in the same set vary in design and size depending on the desired shape of plastic products.

The molding tools can also be adapted for injection molded plastic blanks joined together with parts of e.g. metal, paper or cardboard material.

For example. Insertion of details on the metal cores can easily be done by a robot integrated with the blow molding apparatus.

The mold table of the injection molding machine can be equipped with magnetic plates for setting up the mold tools and eliminate the need for clamping tools.

Between the injection molding machine's mold table with mounted molding tools fi g. 2, the constructed blow molding apparatus which is integrated with the injection molding machine's function and control system to an injection molded blow molding machine is mounted according to the diagram fi g.3. Said blow molding apparatus can be built into the guides or frame part of the injection molding machine and regulated with the movable mold table of the injection molding machine parallel to and between one or fl your mold tables on all types of e.g. horizontal, vertical injection molding machines. Blow molding machines are regulated between the mold tables by the injection molding machine's movable mold table and the injection molding machine's control system regulates the functions of the blow molding apparatus, this contributes to a low manufacturing cost for said injection molding machine.

The integration of the blow molding apparatus with the injection molding machine provides the advantage of being able to use the injection molding machine's control and steering system. For example. short injection time of the plastic sheet in mr adapted molds. The vertical position of the molding tools horizontally and parallel to the molding tables means that the injection molding machine's high pre-locking pressure can be used for efficient locking of the molding tools to a hot duct system with one or more injection ducts with e.g. conical or cylindrical connections and thus avoid leakage of plastic when injecting plastic blanks. The closing of the molding tools also means an effective locking of the metal cores / inner cores of the core holder / at the injection position for plastic blanks. The control and control of the blow molding apparatus between the injection molding machine's mold table can also be done separately with mechanical or computer control.

The invention consists of a process in which a blow molding apparatus shown in fi g.4 consisting of one or two core hob tables which are built on a trolley of metal material and guided on the frame of the injection molding machine or guides between the mold table of the injection molding machine fi g.3 wherein the rear movable form table with mold halves regulates closing and opening movement of said metal carriage. Said metal trolley fi g.4 consists of a base plate with one or two metal beams fitted sliding between the forming tables on the guide or frame section of the injection molding machine and the said base plate of the injection molding machine forms a bracket for one or two 90 degree transverse metal beams for construction of two or fls in laterally movable and these guide guides are mounted in an upper beam parallel to said base plate. Said upper beam is also used for the installation of the carriage's vertical guide guides with lateral for fl extension and adjustment and locking of the distance between a left and a right core holder table. Said upper beam is also a mounting beam for hydraulic air cylinders or motor drive which on said guide guides vertically alternately performs movement up and down of a left or both a left and right mirror-inverted core holding table. 530 12? Design and construction of a blow molding machine. 5 consisting of one or two core holding tables mounted with two or fl your horizontal metal cores. The core holding tables with metal cores can be guided alternately up and down on the vertical guides of the carriage to fixed positions and the core holding tables with metal core chambers can be adjusted vertically to adapt to the forming tools placed on the forming table of the injection molding machine. Said core holding table is made with vertical wedges or T-grooves shown on fi g. 6 for horizontal set-up of two or fl your metal or / blank cores / which can be mounted vertically and horizontally in said wedge or T-groove and after adjusting and fitting said metal cores to the molding tools, lock the metal cores with a simple secure locking device. ~ Said core holder table 1 according to the invention can be mounted with two or metall your metal cores shown on fi g. 6-7 consisting of inner fi mother and core sleeves sliding on the inner cores.

The inner cores mounted on the core holder table can be adjusted with lateral and vertical adjustment with adaptation to the mold tools and then said inner cores can be locked at a rear mounting table shown on fi g. 8 mounted on the fi- from the core holder table outgoing horizontal guides. The inner cores of the metal cores have fi on the rear part channels for connection of liquids Lex. water and connection of air or gas required fi ir the inflation or the plastic blanks and for repelling inflated products from the metal cores.

Plastic injection and blow molding are regulated with the said core sleeves sliding on the inner core and the core sleeves are mounted locked at an intermediate table shown in fi g. 8 which can be adjusted and controlled on horizontal guides extending from the core holder tables. The intermediate tables are adjusted with lu fi or hydraulic cylinders or motors mounted on the rear fixed mounting table of the core holder tables. The core sleeves can, after fitting on the inner core, be mounted in said intermediate table with a considerable vertical wedge or T-groove shown on fi g. 6 and the core sleeves are mounted at said adjustable intermediate table with a simple secure locking device. The core sleeves can be easily and quickly replaced and adjusted in the correct position to the inner cores of the metal cores.

Said movable intermediate tables 1 and 2 regulate the core sleeves in three positions fi g. 9 A mold closing position and B injection position for the plastic body and inflating position of plastic blanks for finished products and C mold opening position for repulsion fi of the metal cores of inflated plastic products. The metal cores are designed to function during the plastic injection as plastic core cores, but also act as blowing judgments during the mold inflation of the plastic sleeve.

At position A, the left core holding table in the lower position and the right core holding table 2 are in the upper position when the injection molding machine front table with high pressure set up molds closes said forming tools to the constructed hot channel system 7 with one or two injection channels and made with cylindrical or conical connections. leakage. Said forging table with the forging tools also closes and locks the metal core to position A for injection of the plastic blank and for inflating finished products.

At position B the intermediate table 1 with the core sleeves closes the air ducts of the inner cores and through the ducts of the hot duct system injection of the plastic sleeve into the blank molds is performed and at the same time intermediate table 2 with core sleeves opens the inner air ducts of said inner cores to the blanks of the blank molds. which in previous cycles has been injection molded into the blank forms 530 '[27 q. Injection of the plastic blanks can be performed at a set time in relation to the inflation.

At position C, the injection molding machine opens the mold tables with the mold tools and fi -forms the mold cores' metal cores to repel from the metal cores of finished inflated products thereafter fl alternately left and right core plate with the blanks cores up or down to center position B a new cycle starts with step 1 A.

The horizontal and parallel set-up of the foundry tools with connection to a water channel system between the injection molding machine's mold table results in a short opening path for mold tools and core holders and during the mold opening time the repulsion from the metal cores of inflated finished products is also performed. Said core holder has a short and fast vertical väg delivery path of metal quinonia to position B for injection of plastic blanks and position for blow molding of finished products. Said metal keins act as plastic blank cores during plastic injection and act as blow mandrels during blow molding. Injection of the plastic material into the blank cores can be adapted to the blow molding time and the plastic blank cores can be adjusted to inflating position B with adjustable time and the correct temperature and thus cooling of said plastic blank splints is avoided. The adjustable fast bicycle dry run is an important prerequisite for high-quality blow-molded products.

Specification The following is a detailed description using the accompanying drawings.

Fig. 1 The picture shows a schematic view of a standard injection molding machine consisting of a horizontal frame part 1 with a fixed upper mold table 2a and a plastic injection cylinder 3 and a rear fixed table 4 and a movable mold table 2b controlled on 2 pcs. guide 1 or frame part 1.

FIG 2 The picture shows the same as fi g. with molding tools 8-9 two or fl are dependent on the size of the injection molding machine the molding tools 8-9 consisting of two halves 8 which are mounted vertically on both sides of the injection molding machine 2a-2b and laterally as close to each other as are allowed for said molding tool cooling channels. The molding tools 8-9 are mounted fi- from the initial position by a hot duct system 7 horizontally and parallel to the injection molding table 2a-2b of the injection molding niaskiri. Said molding tool 8 in the center two or fl eras connects at the closing of the molding tools to the plastic injection pliers of the hot channel system 7 with conical or cylindrical connections and on both sides of the center mold 8 are mounted two or fl molds 9 made for inflating injection molded plastic products 8. Said molding tool can in the same set vary in design and size depending on the desired shape of plastic products. Said plastic body can be injection molded in different colors in the same cycle and also during the injection of the plastic insert combined with previously inserted products of plastic, metal, paper material or other material. The said molding tool is most easily mounted on a magnetic table and thus eliminates the need for fastening tools.

FIG 3 The picture shows the same as the above fi g.l-2. Between the injection molding machine 2a-2b of the injection molding machine with mounted molding tools 8-9, according to the invention, the constructed blow molding apparatus 5 can be mounted on the frame of the injection molding machine or guides integrated 530 12? S. with the injection and control system of the injection molding machine into an injection molding machine. Said blow molding apparatus 5 consists of a left core holding table 14a and a right mirror-inverted core holding table 14b fi g. 4 which are mounted with two or fl your metal cores l7a-l7b fi g. Said blow molding apparatus 5 is built into the guides or frame part 1 of the injection molding machine and is regulated with the movable mold table 2b of the injection molding machine parallel to and between the mold tables of all types of standard injection molding machines e.g. horizontal, vertical with one or fl your mold tables.

The functions of the blow molding apparatus are controlled by the continuous injection molding machine of the injection molding machine, this contributes to a low manufacturing cost for said injection molding blow molding machine.

Fig. 4 The picture shows the same as the above fi g.2ï-3 with according to the invention a constructed blow molding apparatus 5 built on a metal trolley with a base plate 10 consisting of one or two metal beams slidably fitted on the molds or guide section 1 of the injection molding machine between the injection molding machine 2a-2b. Said bottom plate 10 is joined to one or two at 90 degree angles transverse in lateral groove 6 adjustable structural beams 11 which are mounted with two or fl in lateral groove 6 fl superficial vertical guide guides l2x2 and said guide guide 12 is mounted at an upper beam 13 parallel to said bottom plate 10. upper beam 13 is built into the carriage's vertical guide guides 12 with lateral dry surface and adjustment and locking of the distance between a left 14a and a right core holding table 14b. Said upper beam 13 is a mounting beam in hydraulic air cylinders or motor drives 15a-15b which on said vertical guides 12 alternately control and regulate up and down the movement of a left core holding table 14a or both a left and right mirrored core holding table 14b with metal cores 17b.

FIG.5 The picture shows the same as the above fi g. 3-4 Inventing and construction of a blow molding apparatus 5 consisting of one or two core hob tables 14a-14b with two or two horizontally mounted metal cores 17a-17b. The core holding tables 14a-14b with mounted metal cores 17a-17b are alternately guided up and down and adjusted in fixed positions to the molding tools 8-9 placed on the mold table of the injection molding machine. After the closing of the mold tools 8-9, the mold tools 8 with a high locking pressure can be connected with e.g. cylindrical or conical connections to a hot channel system 7 consisting of fl your injection channels for injection molding of the plastic body. The metal cores 17b are adapted to the blow molds 9 before inflating the injection molded plastic sleeves to finished products and when the molds 8-9 are opened, inflated products are repelled from said cores 17b according to fi g. 9c.

FIG. The picture shows the core holder tables with fixed vertical wedge grooves or T-grooves 14 for setting up two or more horizontal metal cores / blank cores / l7a-1 7b which can be mounted in said groove and a horizontal and vertical adjustment of said metal cores l7a-l7 8-7. 9 with a secure simple locking device 16.

FIG.7 Said metal core consists of inner sleeves 17a-17b and core sleeves 22a-22b sliding on the inner core. The inner cores l7a-17b are regulated and locked in a rear fixed mold table 17a-18b mounted on horizontal guides extending from the core holding table 14a-14b. The said metal cores can be easily replaced and adjusted in the correct position to the mold tools 8-9. The inner cores of the metal cores l7a-l 7b have, on the rear part, included channels for connecting lu gas or gas or liquids necessary for inflating the plastic body and for repelling the products from the metal cores.

FIG.8 Plastic injection and blow molding are regulated with core sleeves 22a-22b sliding on the inner core 17a-17b and said core sleeves guided on said inner cores are mounted locked 530 12? G at an intermediate table 2la x2-21b x2 which can be adjusted and controlled by horizontal guides 23 -24 emanating from the core holding tables 14a-14b. The intermediate tables 2la-21b can be controlled and regulated with lu fi, hydraulic cylinders or motors 19a-l9b mounted on the rear of the core holder fixed mold tables l8a-l8b. The core sleeves 22a-22b with fitting on the inner carriage 17a-17b are mounted in the perpendicular vertical wedge or T-bar 25a x2 - 26b x2 of said intermediate tables and can be securely mounted at said adjustable intermediate tables 2la-21b with a simple locking device 27-28.

The core sleeves 22a-22b can be easily and quickly replaced and adjusted in the correct position to the inner carriages 17a-17b of the metal cores. The metal chambers 17a-17b are designed so that they act as plastic blank cores during the plastic injection and during the mold inflation äm the blank cores act as blow mandrels.

FIG. 9 The picture shows the core holder tables l4a-b in 3 positions ABC At position A1 the left core holder table l4a is in the lower position and the right core holder table l4b in the upper position when the injection molding machine's rear mold table with the molding tools 8-9 closes the core holder tables with mounted blank cores 17a-17 to a hot duct system 7 formed with one or two injection channels for injection molding of the plastic sheets and that the connection to said hot duct system 7 with cylindrical or conical connections can be made with a high locking pressure and thus avoid leakage during the plastic injection.

At position B the intermediate table 1, 2la closes Fig. 8 with the core sleeves 22a of the inner cores 17a of the inner cores and through the hot duct system 7 injection of plastic blanks can be made to the blank molds 8 and sanitatively opens intermediate table 2, 21b plastic materials for finished products. Injection of said plastic blanks can be done at a certain time in relation to the inflation.

At position C, the injection molding machine opens the movable mold table 2b with the mold tool halves 8-9 and the blow molding apparatus 5 with core holders 14a-b to the position of the blank cores 17a-17b and the position for ejecting blow-molded plastic products, and then alternately left 14a and right metal core 14b -17b fl is moved up or down to the center position for plastic injection of new plastic blanks and to the position ßr inflation of pre-injected blank cores and a new cycle starts with position A 2.

Control of the above-mentioned movements is performed with the injection molding machine control system but can be mechanical or computer controlled.

Claims (4)

530 127 i? Patent claims Injection molding machine for making plastic products from thermoplastic material consisting of one or more blow molding apparatus (S) comprising at least one core holding table (14 a, b) with at least two cores (17 a, b); wherein said pre-blowing apparatus is mounted between the mold tables (2a, 2b) on the guides or frame part (1) of an injection molding machine. Said injection molding machine comprises horizontal or vertical guides (1) with at least one front fixed mold table (2a) and at least one rear movable mold table (2b) for mounting two or fl your mold tools (8, 9); wherein said mold tool for manufacturing plastic blanks comprises at least a pair of mold halves (8) which are mounted vertically on the mold table of the injection molding machine for connection to a hot duct system (7); wherein said forming tool (8) intended for injection molding of the blank cores is placed horizontally on both sides of the center of said hot channel; and blow molding tool (9) is placed parallel to the mold table of the injection molding machine and is mounted above and below said end molds (8) with at least two pairs of mold halves for blow molding said plastic blanks of pre-injection molded plastic blanks in said mold tool; and blow molding is performed after mold closing and locking of the mold tool halves with the blow molding apparatus and the core holding tables (14 a, b) where the mold tool is arranged to be connected to a hot duct system during blow molding, characterized in that the blow molding apparatus comprises at least one core holding table (14) a carriage sliding and guided on the frame section of the injection molding machine or on guides between the mold table of the injection molding machine, the closing and opening movement of the rear mold table regulating the metal carriage and the position of the blow molding apparatus between the mold halves of the mold tools; and said trolley comprises a base plate (10) or metal beams fitted slidably on the frame section or guides of the injection molding machine and said base plate forms a mounting bracket for at least a 90 degree transverse beam (ll) for constructing two or fl your vertical laterally fl expandable guide guides (12) mounted in a top beam (13) parallel to said base plate; and said beams have guide grooves (6) for the lateral adjustment and mounting and locking of the guide guides between the left and a right core holding table (14 a, b); and said upper beam constitutes mounting bracket for translation units (15 a, b) arranged to enable vertical alternating control to fixed positions of at least one core holding table; furthermore, at said core holding table mounted cores (17 a, b) which are alternately guided up and down on the vertical guides of the carriage and regulate said core holding table with mounted said cores to connect the cores lockably horizontally and vertically to the forming tools placed on the injection molding machine; in addition, from said core holding table two or fl your horizontal guides locked at a rear table (18 a, b); and said rear table is designed for mounting and adjusting cores (17 a, b); and said guides constitute guide for two intermediate tables (21 a, b) with fixed devices for vertical and horizontal mounting of core sleeves (22 a, b) sliding on the cores (17 a, b); and said intermediate table is controlled by translation units mounted on the rear table of the core holder table; and said intermediate table is designed for mounting and locking said core sleeves; and said core sleeves are designed to perform closing and opening of the connection of the cores (17 a, b) for e.g. air, gas or liquids and that said core sleeves also perform the repulsion of inflated plastic substances on the metal cores; and said movable intermediate table (21 a, b) can regulate said core sleeves in three positions (mold closing position and injection position of the plastic sleeve and inflating position of the plastic sleeve to finished products); and in the mold opening position, repulsion takes place from said metal cores of inflated plastic products; and said metal cores are designed so as to act as plastic blank cores in the plastic injection and in the blow molding said metal cores function as blow mandrels. 530 127 A blow molding apparatus according to claim 1 wherein in position 1 the left n core holding table (14a) is located in the upper position and the right core holding table (14b) in the lower layer when the injection molding machine's rear front table with the forming tools closes said core holding table with mounted said core cores and thereby locks a hot tool system. 3. A blow molding apparatus according to claim 1, wherein in position 2 intermediate gates close the inner cores of the inner cores with core sleeves and through the hot duct system injection of plastic blanks into the blanks can be performed and at the same time the closed inner cores of the inner cores are opened. to finished products and injection of said plastic blanks can be performed at a predetermined time in relation to the inflation. The blow molding apparatus according to claim 1, wherein in position 3, the injection molding machine opens the mold tables with tool molds and "forms the blow molding apparatus with blank cores for repulsion" from the cores of finished inflated products.