CN219583499U - Arrangement structure of injection blow mould in injection blow molding machine - Google Patents

Abstract

The utility model discloses an arrangement structure of an injection blow mould in an injection blow molding machine, which comprises the following components: the device comprises a fixed die plate and a movable die holder, wherein N injection molding stations and N+1 blow molding stations which are arranged at intervals at equal intervals are arranged on the fixed die plate along the transposition translation direction of the movable die holder; the fixed die plate is provided with a fixed die cavity plate, the fixed die cavity plate is provided with injection and blow molding fixed die cavity groups corresponding to injection and blow molding stations, each injection molding fixed die cavity group comprises M injection molding fixed die cavities, and each blow molding fixed die cavity group comprises M blow molding fixed die cavities; the fixed die plate is provided with a slide block seat at the rear of the fixed die cavity plate, and injection and blow molding slide block groups corresponding to the injection and blow molding fixed die cavities one by one are respectively arranged on the slide block seat; the movable die holder is movably provided with a sliding core holder, and the sliding core holder is provided with 2N multiplied by M cores. The injection blow molding machine adopting the arrangement structure can arbitrarily expand injection blow molding stations, thereby improving productivity and reducing production cost.

Description

Arrangement structure of injection blow mould in injection blow molding machine

Technical Field

The utility model relates to an injection molding machine, in particular to an arrangement structure of an injection mold in the injection molding machine.

Background

In the plastic injection and blowing industry, three-station injection and blowing molding machines are generally adopted at present, wherein a working table surface is generally in a regular triangle shape, and an injection molding station, a blow molding station and a demolding station (so-called three stations) are generally arranged on the working table surface along the anticlockwise direction. Because the injection station and the blow station of the injection and blow mold in the traditional three-station injection and blow molding machine are not easy to expand, the whole three-station injection and blow molding machine has lower yield and higher energy consumption, thereby having higher production cost.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: an arrangement structure of injection-blow mould in injection-blow moulding machine is provided, which can expand injection-blow station at will.

In order to solve the technical problems, the utility model adopts the following technical scheme: an arrangement of injection blow molds in an injection blow molding machine, comprising: the injection molding device comprises a fixed die plate and a movable die holder corresponding to the fixed die plate, wherein the fixed die plate is provided with N injection molding stations and N+1 blow molding stations in an opening and closing direction perpendicular to an injection blowing die, and the fixed die plate is provided with N injection molding stations and N+1 blow molding stations along a transposition translation direction of the movable die holder, wherein N is a positive integer greater than or equal to 1, and the injection molding stations and the blow molding stations are arranged at intervals at equal intervals; the fixed die plate is provided with a runner plate and a fixed die cavity plate on one surface facing the movable die holder in sequence, the fixed die cavity plate is provided with injection molding fixed die cavity groups corresponding to the injection molding stations and blow molding fixed die cavity groups corresponding to the blow molding stations, each injection molding fixed die cavity group comprises M injection molding fixed die cavities, each blow molding fixed die cavity group comprises M blow molding fixed die cavities, M is a positive integer greater than or equal to 1, the fixed die plate is movably provided with a slide block seat moving along the opening and closing direction of the injection molding die at the rear of the fixed die cavity plate through at least one pair of guide posts parallel to each other, the slide block seat is provided with an injection molding slide block group corresponding to each injection molding fixed die cavity group and a blow molding slide block group corresponding to each blow molding fixed die cavity group, each injection molding slide block group comprises M pairs of openable and closable injection molding slide blocks, and each blow molding slide block group comprises M pairs of openable and closable blow molding slide blocks; the movable die holder is movably provided with a sliding die core seat, the movable die holder and the sliding die core seat are respectively provided with a guide hole corresponding to the guide post, and the sliding die core seat is provided with 2N multiplied by M cores corresponding to an injection molding fixed cavity on the injection molding station and a blow molding fixed cavity on the blow molding station.

In one preferred embodiment, in the arrangement of the injection mold in the injection molding machine, the fixed cavity plate is disposed on the fixed cavity plate through a cavity shim plate.

In one preferred embodiment, in the arrangement of the injection mold in the injection molding machine, the core is provided on the sliding core print via a platen.

As a preferable mode, in the arrangement structure of the injection blow mold in the injection blow molding machine, the concrete installation mode of the core is as follows: the sliding core seat on set up with the lower tip matched with core mounting hole of core, the lower part of core is provided with the location boss, set up on the bottom surface of clamp plate with the matched with locating hole of location boss on the core, set up on the diapire of locating hole with core matched with installation through-hole, the lower part of core is inserted and is established on the core mounting hole on the sliding core seat, the location boss on the core is shelved on the sliding core seat, the clamp plate through its installation through-hole cover establish on the core for the locating boss of core lower part is arranged in the locating hole of clamp plate, the clamp plate is fixed on the sliding core seat.

In a preferred embodiment, in the arrangement structure of the injection blow mold in the injection blow molding machine, the fixed mold plate is square, and guide posts are provided at four corners of the fixed mold plate, respectively.

The beneficial effects of the utility model are as follows: the arrangement structure of the injection and blowing mold can not only expand injection and blowing stations at will, but also expand the number of injection fixed cavities in the injection fixed cavity group on each injection station and correspondingly expand the number of blow fixed cavities in the blow fixed cavity group on each injection station, and shortens the time for switching the mold core among the injection and blow fixed cavities, thereby greatly improving productivity and production efficiency according to actual needs, reducing production cost and improving the competitiveness of products. In addition, the installation structure of the mold core enables the installation of the mold core to be more convenient and faster.

Drawings

Fig. 1 is a schematic cross-sectional view of an injection blow mold in an injection blow molding machine according to the present utility model.

Fig. 2 is a schematic view showing a partially sectional structure of an injection blow mold in an injection blow molding machine according to the present utility model.

Fig. 3 is a schematic diagram of the structure shown in the direction K in fig. 2.

FIG. 4 is a schematic cross-sectional view of an injection station of an injection blow molding machine according to the present utility model.

FIG. 5 is a schematic cross-sectional view of a blow station of an injection blow molding machine according to the present utility model.

FIG. 6 is a schematic view showing the structure of the injection molding machine in the opened state according to the present utility model.

Fig. 7 is a schematic view showing a state structure of the injection blow molding machine after mold opening and core displacement according to the present utility model.

Reference numerals in fig. 1 to 7 are respectively: 10. runner plate, 101, hot runner, 11, fixed platen, 12, cavity bolster, 13, fixed platen, 131, injection fixed cavity set, 1311, injection fixed cavity, 132, blow fixed cavity set, 1321, blow fixed cavity, 1411, first injection molding slide, 1412, second injection molding slide, 1421, first injection molding slide, 1422, second injection molding slide, 15, slide mount, 16, platen, 17, sliding core mount, 171, pilot hole, 172, air channel, 18, movable mold mount, 181, pilot hole, 19, core, 190 core, 191, movable core head, 192, positioning boss, 193, return spring, 194, air channel, 195, blow port, 197, tie rod, 21, pilot post, 31, first injection molding station, 32, second injection molding station, 41, first blow molding station, 42, second blow molding station, 43, third blow molding station, 5, shift cylinder, 91, bottle preform, 92, bottle.

Detailed Description

The following describes in detail an embodiment of an arrangement structure of an injection mold in an injection molding machine according to the present utility model with reference to the accompanying drawings.

As shown in fig. 1 to 5, an arrangement structure of an injection mold in an injection molding machine according to the present utility model includes: the fixed die plate 11 and runner plate 10 built-in the fixed die plate 11, and the movable die holder 18 corresponding to the fixed die plate 11, the fixed die plate 11 has set gradually first blowing station 41, first injection molding station 31, second blowing station 42, second injection molding station 32 and third blowing station 43 in the direction perpendicular to the opening and closing direction of the injection blowing die, namely: the injection molding stations and the blow molding stations are arranged at intervals, and the intervals between the first blow molding station 41 and the first injection molding station 31, the first injection molding station 31 and the second blow molding station 42, the second blow molding station 42 and the second injection molding station 32 and the intervals between the second injection molding station 32 and the third blow molding station 43 are all equal; the fixed die plate 11 has set gradually die cavity backing plate 12 and fixed die cavity board 13 in the one side towards movable die holder 18, is provided with respectively on the fixed die cavity board 13 with the fixed die cavity group 131 of moulding plastics that the station 31 of moulding plastics and the station 32 of moulding plastics corresponding, and the fixed die cavity group 132 of blowing corresponding with first blowing station 41, second blowing station 42 and third blowing station 43, every fixed die cavity group 131 of moulding plastics includes: four injection molding stationary cavities 1311, corresponding to which each blow molding stationary cavity group 132 comprises: four blow molding cavities 1321, the cavity liner plate 12 and the runner plate 10 are provided with hot runners 101 (which are conventional in the art and will not be described herein) connected to all injection molding cavities 1311; the fixed die plate 11 is square, the fixed die plate 11 is respectively provided with guide posts 21 which are parallel to each other and are arranged towards the movable die holder 18 at four corners of the fixed die plate 11, the fixed die plate 11 is movably provided with a slide block seat 15 which moves along the opening and closing direction of the injection and blowing die through the guide posts 21 at the rear of the fixed die cavity plate 13, and the concrete installation mode of the slide block seat 15 is as follows: the sliding block seats 15 are provided with guide holes which are in one-to-one correspondence with the guide posts 21, and the sliding block seats 15 are movably arranged on the guide posts 21 in a penetrating way through the guide holes; the slide block seat 15 is provided with an injection molding slide block set corresponding to each injection molding fixed cavity group 131 and a blow molding slide block set corresponding to each blow molding fixed cavity group 132 (the injection molding fixed cavity group 131 and the blow molding fixed cavity group 132 are usually used for molding the bottleneck and other parts of the plastic bottle 92), each injection molding slide block set comprises four pairs of openable injection molding slide blocks, each pair of injection molding slide blocks comprises a first injection molding slide block 1411 and a second injection molding slide block 1412, each blow molding slide block set comprises four pairs of openable blow molding slide blocks, and each pair of blow molding slide blocks comprises a first blow molding slide block 1421 and a second blow molding slide block 1422; four guide holes 181 corresponding to the guide posts 21 one by one are formed in the movable die holder 18, and a sliding core print 17 (which belongs to the conventional technology in the art and is not described here) is movably arranged on the movable die holder 18; the sliding core seat 17 is provided with guide holes 171 which are in one-to-one correspondence with the guide holes 181 on the movable die seat 18; sixteen cores 19 corresponding to the injection molding fixed cavities 1311 on the first injection molding station 31 and the second injection molding station 32 and the blow molding fixed cavities 1321 on the first blow molding station 41, the second blow molding station 42 and the third blow molding station 43 are arranged on the sliding core print 17 through the pressing plate 16, and the cores 19 include: the core body 190, the core body 190 is movably provided with a pull rod 197, a return spring 193 for returning the pull rod 197 is arranged between the pull rod 197 and the core body 190 (the specific arrangement mode of the return spring 193 belongs to the conventional technology in the art and is not described herein), the top of the pull rod 197 is provided with a movable core head 191 (belongs to the conventional technology in the art and is not described herein), an air passage 194 is arranged between the core body 190 and the movable core head 191, and an air blowing port 195 is formed at the upper port between the movable core head 191 and the core body 190 by the air passage 194 (the structure of the core 19 belongs to the conventional technology in the art and is not described herein), and the specific installation mode of the core 19 is as follows: the sliding core seat 17 is provided with a core mounting hole matched with the lower end part of the core 19 and an air channel 172 communicated with an air channel 194 of the core 19, the lower part of the core 19 is provided with a positioning boss 192, the bottom surface of the pressing plate 16 is provided with a positioning hole matched with the positioning boss 192 on the core 19, the bottom wall of the positioning hole of the pressing plate 16 is provided with a mounting through hole matched with the core 19, the lower part of the core 19 is inserted into the core mounting hole on the sliding core seat 17, the positioning boss 192 on the core 19 is placed on the sliding core seat 17, the pressing plate 16 is sleeved on the core 19 through the mounting through hole, so that the positioning boss 192 on the lower part of the core 19 is placed in the positioning hole of the pressing plate 16, and the pressing plate 16 is fixed on the sliding core seat 17 (which is a conventional technology in the field and is not described here); the movable die holder 18 is provided with a shift cylinder 5, a piston rod of the shift cylinder 5 is connected with the sliding core holder 17, and a die opening mechanism (which belongs to the conventional technology in the field and is not described here) is usually connected with the movable die holder 18, so that the sliding core holder 17 can translate along with the movable die holder 18 in the opening and closing direction of the injection and blowing die, and can be parallel shifted along the opening and closing direction perpendicular to the injection and blowing die under the driving of the shift cylinder 5, thereby realizing the shift of the core 19 between the injection and blowing die.

In practice, the fixed cavity plate 13 is also typically provided with water cooling channels (which are conventional in the art and will not be described herein) for cooling the injection fixed cavity 1311 and the blow fixed cavity 1321. As shown in fig. 6 and 7, all sixteen cores 19 are divided into four rows along the direction perpendicular to the mold opening and closing direction (the arrangement direction of the piston rods of the shift cylinder 5), the air passages 194 of all eight cores 19 of the odd-numbered rows (one, three rows) are connected, and the air passages 194 of all eight cores 19 of the even-numbered rows (two, four rows) are connected.

The working flow of the utility model is as follows: the injection-blow mold is clamped, plasticized plastic enters an injection molding cavity formed by the injection molding fixed cavity 1311, a corresponding first injection molding slide 1411 and a corresponding second injection molding slide 1412 through the hot runner 101, the bottle blank 91 is molded by temperature control, then the mold is opened, the movable mold (comprising the movable mold base 18, the sliding core seat 17, the pressing plate 16 and the core 19) is retracted, the core 19 is taken out of the injection molding fixed cavity 1311 with the bottle blank 91, then the first injection molding slide 1411 and the second injection molding slide 1412 are also retracted together and opened until the first injection molding slide is retracted to the set position, then after the movable mold is continued to be retracted to the set position, the core 19 is parallel shifted under the drive of the shift cylinder 5, the core 19 with the bottle blank 91 is shifted to the corresponding blow molding station, the core 91 without the bottle blank 91 is shifted to the corresponding injection molding station (see fig. 6), then the mold is clamped in place, the plasticized plastic enters an injection molding cavity formed by an injection molding fixed cavity 1311, a corresponding cavity between a first injection molding sliding block 1411 and a second injection molding sliding block 1412 through a hot runner 101, a bottle blank 91 is molded through temperature control, simultaneously, an air blowing port 195 on a core 19 on a blow molding station is opened, compressed air is blown out from the air blowing port 195 between a movable core head 191 and a core body 190 through an air passage 194, the bottle blank 91 is blow molded into a plastic bottle 92, after the bottle blank 91 is subjected to injection temperature control molding and the plastic bottle 92 is blow molded and cooled, a mold is opened, the movable mold is retracted, the core 19 on the blow molding station is pulled out of the corresponding cavity with the molded plastic bottle 92, the core 19 on the injection molding station is pulled out of the corresponding cavity with the bottle blank 91, the injection molding sliding block group is opened while being pulled out together with the blow molding sliding block group until the bottle blank 91 is stopped after the set position is reached, the core 19 on the injection molding station is pulled out of the mold core 91, the mold core 19 on the blow molding station is further retracted to the set position with the plastic bottle 92, then the shifting cylinder 5 drives the sliding mold core seat 17 to shift together with all the mold cores 19, during the shifting process of the mold core 19, the plastic bottle 92 formed by blow molding is taken off from the mold core 19, or alternatively, after shifting in place, the plastic bottle 92 formed by blow molding is taken off from the mold core 19, at this time, the mold core 19 with the bottle blank 91 is shifted to the blow molding station, the mold core without the bottle blank 91 is shifted to the injection molding station (see fig. 7), then the mold is closed, and the above process is repeated, and thus the cycle is repeated.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, but rather the equivalent variations and modifications in shape, construction, characteristics and spirit according to the scope of the claims should be construed to be included in the scope of the claims.

Claims (5)

1. An arrangement of injection blow molds in an injection blow molding machine, comprising: fixed die plate and with the corresponding movable mould base of fixed die plate, its characterized in that: the fixed template is provided with N injection molding stations and N+1 blow molding stations in the opening and closing direction perpendicular to the injection molding die, wherein N is a positive integer greater than or equal to 1, and the injection molding stations and the blow molding stations are arranged at intervals at equal intervals; the fixed die plate is provided with a fixed die cavity plate on one surface facing the movable die holder, the fixed die cavity plate is provided with injection molding fixed die cavity groups corresponding to the injection molding stations and blow molding fixed die cavity groups corresponding to the blow molding stations, each injection molding fixed die cavity group comprises M injection molding fixed die cavities, each blow molding fixed die cavity group comprises M blow molding fixed die cavities, M is a positive integer greater than or equal to 1, the fixed die plate is movably provided with a slide block seat moving along the opening and closing direction of the injection molding die at the rear of the fixed die cavity plate through at least one pair of guide posts parallel to each other, the slide block seat is provided with injection molding slide block groups corresponding to each injection molding fixed die cavity group and blow molding slide block groups corresponding to each blow molding fixed die cavity group, each injection molding slide block group comprises M pairs of openable injection molding slide blocks, and each blow molding slide block group comprises M pairs of openable blow molding slide blocks; the movable die holder is movably provided with a sliding die core seat, the movable die holder and the sliding die core seat are respectively provided with a guide hole corresponding to the guide post, and the sliding die core seat is provided with 2N multiplied by M cores corresponding to an injection molding fixed cavity on the injection molding station and a blow molding fixed cavity on the blow molding station.

2. The arrangement of injection blow molds in an injection blow molding machine according to claim 1, wherein said stationary cavity plate is provided on the stationary mold plate by a cavity shim plate.

3. The arrangement of injection blow molds in an injection blow molding machine according to claim 1, wherein said core is provided on said sliding core print by means of a platen.

4. A structure for arranging injection blow molds in an injection blow molding machine according to claim 3, wherein the concrete installation mode of the core is as follows: the sliding core seat on set up with the lower tip matched with core mounting hole of core, the lower part of core is provided with the location boss, set up on the bottom surface of clamp plate with the matched with locating hole of location boss on the core, set up on the diapire of locating hole with core matched with installation through-hole, the lower part of core is inserted and is established on the core mounting hole on the sliding core seat, the location boss on the core is shelved on the sliding core seat, the clamp plate through its installation through-hole cover establish on the core for the locating boss of core lower part is arranged in the locating hole of clamp plate, the clamp plate is fixed on the sliding core seat.

5. An arrangement structure of an injection blow mold in an injection blow molding machine according to any one of claims 1 to 4, wherein the stationary platen has a square shape, and is provided with guide posts at four corners thereof, respectively.