Injection molding and blow molding integrated forming mold and hollow bottle production method

Abstract

The invention provides an injection molding and blow molding integrated forming mold and a hollow bottle production method, the injection molding and blow molding integrated forming mold comprises a base, a mold frame, an injection mold, a blow molding mold and a translation mechanism; a rotating mold is rotationally connected into the mold frame, frame guide columns extending in the front-back direction are arranged on the front side and the rear side of the mold frame correspondingly, and a sliding rail extending in the front-back direction is arranged on the bottom side of the mold frame. A first supporting base is arranged on the bottom side of the injection mold and is in sliding connection with the sliding rail through a sliding block, and a second supporting base is arranged on the bottom side of the blow molding mold and is in sliding connection with the sliding rail through a sliding block. Compared with the prior art, the injection molding and blow molding integrated forming mold disclosed by the embodiment of the invention can realize multiple guide positioning, so that stable mold opening and closing and high-precision positioning between the molds can be realized, and high-precision alignment of the center of the mold core of the rotary mold, the center of an injection molding cavity of the injection mold and the center of a blow molding cavity of the blow molding mold is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of plastic product processing, and in particular to an injection-blow molding integrated molding die and an injection-blow bottle production method. Background Art

[0002] With the increasing demand for hollow packaging and the fierce market competition, people have higher and higher requirements for hollow bottle products. Most of the existing one-step two-station injection blow molding adopts the method of fixing the outer frame of the rotating mold on the Green column for installation and positioning. The Green column between the front mold and the rear mold is too long, and the mold itself plus the rotation system is heavy. The rotation movement is frequent and the amplitude is large during high-speed production. As the preform rotates to the blow mold for mold closing again, the mold closing positioning accuracy is not high, and the center of the preform and the center of the blow mold cavity are prone to offset. In addition, because the Green column fixes the entire set of molds, its spatial position is limited, making mold debugging more difficult, and the product is prone to problems such as excessive mold line, uneven thin wall thickness, and unstable quality. Summary of the invention

[0003] The purpose of the present application is to provide an injection blow molding integrated molding die and a hollow bottle production method to solve the shortcomings and deficiencies in the prior art.

[0004] An injection blow molding integrated molding die of the present application comprises:

[0005] A base, wherein the base is fixedly arranged;

[0006] A mold frame is fixed on the base, a rotating mold is rotatably connected in the mold frame, a rotating driving member for driving the rotating mold to rotate is arranged on the mold frame, frame guide pillars extending in the front-to-back direction are arranged on both the front and rear sides of the mold frame, a slide rail extending in the front-to-back direction is arranged on the bottom side of the mold frame, a plurality of bottle mouth cores and mold guide pillars are arranged on both the front and rear sides of the rotating mold, a core rod with a blowing channel is arranged in each of the bottle mouth cores, and the core rod can be extended and retracted relative to the bottle mouth core;

[0007] An injection mold is arranged on the front side of the mold frame, a first support seat is arranged on the bottom side of the injection mold, the first support seat is slidably connected with the slide rail through a slider, a plurality of injection cavities corresponding to the bottle mouth core and the core rod are arranged on the rear side of the injection mold, a glue injection port, a hot runner and a glue inlet needle valve are arranged on the injection mold, and a first frame guide sleeve corresponding to the frame guide column and a first mold guide hole corresponding to the mold guide column are also arranged on the injection mold;

[0008] A blow mold is arranged on the rear side of the mold frame, a second support seat is arranged on the bottom side of the blow mold, the second support seat is slidably connected to the slide rail through a slider, a plurality of blow molding cavities corresponding to the bottle mouth core and the core rod are arranged on the front side of the blow mold, a second frame guide sleeve corresponding to the frame guide column and a second mold guide hole corresponding to the mold guide column are arranged on the blow mold, an ejector rod is also arranged on the blow mold, the ejector rod is used to eject the hollow bottle, and a finished product slide groove for receiving the hollow bottle is also arranged on the side of the mold frame facing the blow mold;

[0009] The translation mechanism is arranged on the mold frame, and the translation mechanism can drive the injection mold and the blow mold to approach or move away from the rotating mold along the front-rear direction.

[0010] Compared with the prior art, the integrated injection molding and blow molding mold described in the embodiment of the present application can realize multiple guide positioning through the sliding guide between the pulleys of the first support seat and the second support seat and the slide rail under the mold frame, the translation drive guide of the translation mechanism, and the multi-level guide cooperation between the frame guide column and the first and second frame guide sleeves, and the mold guide column and the first and second guide holes, so as to realize smooth opening and closing of the molds and high-precision positioning, and ensure high-precision alignment of the center of the rotating mold core with the center of the injection cavity of the injection mold and the center of the blow cavity of the blow mold. The molded product has a small mold line, no burr on the bottle mouth thread, high cavity alignment accuracy, uniform thin wall thickness, and a more beautiful and smooth appearance. It is suitable for transparent bottles with high appearance requirements, especially for small-capacity bottles with high requirements for bottle mouth accuracy and uniform bottle body thickness.

[0011] In a preferred or optional embodiment, the translation mechanism includes a driving gear box, a first rack and a second rack, the driving gear box is arranged on the outside of the mold frame, the first rack is engaged with the driving gear box and connected to the outside of the injection mold, the second rack is engaged with the driving gear box and connected to the outside of the blow mold, and the first rack and the second rack are both extended along the front-to-back direction.

[0012] In a preferred or optional embodiment, the translation mechanism is provided in plurality, and the left and right sides of the mold frame are both provided with the same number of translation mechanisms.

[0013] In a preferred or optional embodiment, the driving gearbox includes a gearbox body, a gear motor, and a driving gear, a first driven gear and a second driven gear arranged in the gearbox body, the gear motor is used to drive the driving gear, the first driven gear and the second driven gear are both engaged with the driving gear, the first rack penetrates into the gearbox body and engages with the first driven gear, and the second rack penetrates into the gearbox body and engages with the second driven gear.

[0014] In a preferred or optional embodiment, at least two slide rails are provided, and the two slide rails are respectively provided on the left and right sides of the bottom side of the mold frame.

[0015] In a preferred or optional embodiment, the rotating mold is rotatably connected to the mold frame via a rotating shaft, the rotating drive component includes a servo motor and a reducer connected to the servo motor, the output shaft of the reducer is provided with a first gear, and the outer periphery of the rotating shaft is installed with a second gear meshing with the first gear.

[0016] In a preferred or optional embodiment, the integrated injection-blow molding mold further includes a controller, and the mold frame is further provided with a sensing switch for sensing that the second gear has rotated into place, and the sensing switch, servo motor, and gear motor are electrically connected to the controller respectively, and the controller is used to receive the signal transmitted by the sensing switch and control the rotation of the servo motor and the gear motor, thereby driving the rotating mold to rotate back and forth and the injection mold and the blow mold to move back and forth.

[0017] In a preferred or optional embodiment, the rotating shaft includes an upper rotating shaft and a lower rotating shaft, the upper rotating shaft and the lower rotating shaft are respectively arranged on the upper and lower sides of the rotating mold and pass through the mold frame, and the second gear is installed on the outer periphery of the upper rotating shaft.

[0018] In a preferred or optional embodiment, the outer side of the lower rotating shaft is provided with a pipeline sleeve, and the pipeline sleeve is provided with air inlet and outlet, water inlet and outlet, and oil inlet and outlet leading to the rotating mold.

[0019] A method for producing a hollow bottle of the present application uses the above-mentioned injection molding and blow molding integrated molding die, and is characterized in that it comprises the following steps:

[0020] S1, first injection molding: the injection mold and the blow mold are respectively close to the front and rear sides of the mold frame until they are molded with the front and rear sides of the rotating mold, a plurality of bottle mouth cores and core rods on one side of the rotating mold are respectively extended into the plurality of injection molding cavities, and the hot runner passes the plastic melt into the plurality of injection molding cavities through the glue inlet to produce a plurality of bottle embryos;

[0021] S2, first exchange of positions: the injection mold and the blow mold are respectively away from the front and rear sides of the mold frame, and the rotary mold is rotated until the side of the rotary mold with the preform faces the blow mold;

[0022] S3, injection molding and blow molding are carried out simultaneously: the injection mold and the blow molding mold are respectively close to the front and rear sides of the mold frame until they are molded with the rotating mold, wherein the multiple bottle mouth cores and core rods on one side of the rotating mold are respectively extended into the multiple injection molding cavities, and the hot runner passes the plastic melt into the multiple injection molding cavities through the glue inlet to form multiple bottle preforms. At the same time, the multiple bottle preforms on the other side of the rotating mold are extended into the multiple blow molding cavities, and the multiple core rods are extended into the interior of the bottle preforms. The blowing channel at the bottom of the core rod is opened, and the multiple bottle preforms are blow-molded to obtain multiple hollow bottles.

[0023] S4: Discharging: The injection mold and the blow mold are respectively moved away from the front and rear sides of the mold frame, the core rod is retracted into the corresponding bottle mouth core, the ejector rod ejects the hollow bottle to make it fall into the finished product chute, and the rotary mold is rotated until the side of the rotary mold with the bottle embryo faces the blow mold;

[0024] S5. Repeat the above steps S3 and S4.

[0025] For better understanding and implementation, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of an integrated injection and blow molding mold from one perspective in an embodiment of the present application;

[0027] Figure 2 This is a structural schematic diagram of the injection blow molding integrated molding die from another perspective in an embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the exploded structure of the injection blow molding integrated molding die in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of a partial structure of a mold frame in an embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the front structure of the mold frame and the rotating mold in the embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the side cross-sectional structure of the rotary mold and the injection mold in the embodiment of the present application;

[0032] Figure 7 This is a schematic diagram of the front structure of the blow mold in the embodiment of the present application;

[0033] Figure 8 This is a structural diagram of the rotating drive component of the injection blow molding integrated molding die in the embodiment of the present application (partial structure is hidden);

[0034] Fig. 9This is a structural diagram of the translation mechanism of the injection blow molding integrated molding die in the embodiment of the present application (partial structure is hidden);

[0035] Description of reference numerals:

[0036] 1. Base; 2. Mold frame; 21. Frame guide column; 22. Slide rail; 221. Slider; 23. Finished product slide; 3. Rotary mold; 31. Bottle core; 32. Mold guide column; 33. Mandrel; 34. Rotating shaft; 341. Upper rotating shaft; 342. Lower rotating shaft; 35. Pipe sleeve; 351. Air inlet and outlet; 352. Water inlet and outlet; 353. Oil inlet and outlet; 4. Rotary drive; 41. Servo motor; 42. Reducer; 43. First gear; 44. Second gear; 5. Injection mold; 51. First Support seat; 52, injection cavity; 53, injection port; 54, hot runner; 55, injection port needle valve; 56, first frame guide sleeve; 57, first mold guide hole; 6, blow mold; 61, second support seat; 62, blow cavity; 63, second frame guide sleeve; 64, second mold guide hole; 7, translation mechanism; 71, driving gear box; 711, gear box body; 712, driving gear; 713, first driven gear; 714, second driven gear; 72, first rack; 73, second rack; 8, bottle embryo. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] It should be understood that, in the description of the present application, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated, that is, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, unless otherwise specified, "multiple" means two or more.

[0039] It should be noted that, in the description of this application, unless otherwise clearly specified and limited, the terms "disposed", "connected", "connected", and "hollow" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] See also Figures 1 to 9 , an injection blow molding integrated molding mold of this embodiment can be installed on a machine platform, and specifically includes: a base 1, a mold frame 2, an injection mold 5, a blow molding mold 6 and a translation mechanism 7.

[0041] The base 1 is fixedly arranged and can be fixed on the machine platform to play a role of fixed support.

[0042] The mold frame 2 is fixed on the base 1, and a rotating mold 3 is rotatably connected inside the mold frame 2. A rotating driving member 4 for driving the rotating mold 3 to rotate is provided on the mold frame 2, and the rotating driving member 4 can drive the rotating mold 3 to rotate 180°. The front and rear sides of the mold frame 2 are provided with frame guide columns 21 extending along the front and rear directions, and the bottom side of the mold frame 2 is provided with a slide rail 22 extending along the front and rear directions. A plurality of bottle mouth cores 31 and mold guide columns 32 are provided on the front and rear sides of the rotating mold 3, and each of the bottle mouth cores 31 is provided with a core rod 33 with a blowing channel, and the core rod 33 can be extended and retracted relative to the bottle mouth core 31.

[0043] The injection mold 5 is arranged at the front side of the mold frame 2, and a first support seat 51 is arranged at the bottom side of the injection mold 5. The first support seat 51 is slidably connected with the slide rail 22 through the slider 221, so that the injection mold 5 can approach or move away from the mold frame 2 in the front-back direction. A plurality of injection cavities 52 corresponding to the bottle mouth core 31 and the core rod 33 are arranged at the rear side of the injection mold 5. The injection mold 5 is provided with a glue injection port 53, a hot runner 54 and a glue inlet needle valve 55. External plastic melt can be injected through the glue injection port 53. The plastic melt controls the flow through the glue inlet needle valve 55 and enters the hot runner 54, and is injected into the injection cavity 52 through the glue inlet of the hot runner 54. The bottle mouth core 31, the core rod 33 and the injection cavity 52 can be injection molded into a bottle embryo 8.

[0044] The injection mold 5 is also provided with a first frame guide sleeve 56 corresponding to the frame guide column 21 and a first mold guide hole 57 corresponding to the mold guide column 32. The frame guide column 21 and the first frame guide sleeve 56 are slidably matched, and the mold guide column 32 and the first mold guide hole 57 are slidably matched, thereby ensuring high-precision alignment between the core center of the rotating mold 3 and the cavity center of the injection mold 5.

[0045] The blow mold 6 is arranged on the rear side of the mold frame 2, and a second support seat 61 is arranged on the bottom side of the blow mold 6. The second support seat 61 is slidably connected to the slide rail 22 through a slider 221, so that the blow mold 6 can approach or move away from the mold frame 2 in the front and rear directions. The front side of the blow mold 6 is provided with a plurality of blow molding cavities 62 corresponding to the bottle mouth core 31 and the core rod 33. When the preform 8 is extended into the blow molding cavity 62, air is taken in through the air inlet of the rotating mold. Under the action of air pressure and the spring at the bottom, the core rod 33 is pushed out and continues to extend into the interior of the preform 8. The blowing channel at the bottom of the core rod 33 is opened, and air can be blown into the preform 8 through the blowing channel, so that the preform 8 is blown into a hollow bottle. The blow mold 6 is also provided with an ejector rod, which is used to eject the hollow bottle. After blow molding, the core rod 33 is retracted into the bottle mouth core 31, and the blowing channel at the bottom of the core rod 33 is closed. The ejector rod can be extended under the action of the cylinder to eject the hollow bottle. The mold frame 2 is also provided with a finished product chute 23 for receiving the hollow bottle on the side facing the blow mold 6. The ejected hollow bottle falls into the finished product chute 23, which is convenient for recycling the hollow bottle.

[0046] Among them, the blow mold 6 is provided with a second frame guide sleeve 63 corresponding to the frame guide column 21 and a second mold guide hole 64 corresponding to the mold guide column 32. The frame guide column 21 and the second frame guide sleeve 63 are slidably matched, and the mold guide column 32 and the second mold guide hole 64 are slidably matched, thereby ensuring high-precision alignment between the core center of the rotating mold 3 and the cavity center of the blow mold 6.

[0047] The translation mechanism 7 is disposed on the mold frame 2 , and the translation mechanism 7 can drive the injection mold 5 and the blow mold 6 to approach or move away from the rotating mold 3 along the front-rear direction.

[0048] The injection-blow-molding integrated molding mold described in the embodiment of the present application has a mold frame 2 fixed on a base 1, and the base 1 can be fixed on a machine platform. The injection mold 5 and the blow mold 6 are respectively mounted on a first support seat 51 and a second support seat 61. Through the sliding guide between the pulleys of the first support seat 51 and the second support seat 61 and the slide rail 22 below the mold frame 2, the translation mechanism 7 translates and drives the guide, and the multi-level guiding cooperation between the frame guide column 21 and the first and second frame guide sleeves 63, and the mold guide column 32 and the first and second guide holes can realize multiple guiding positioning, thereby realizing smooth mold opening and closing and high-precision positioning between the molds, ensuring high-precision alignment of the core center of the rotating mold 3 with the center of the injection cavity 52 of the injection mold 5 and the center of the blow cavity 62 of the blow mold 6, the molded product has a small parting line, the bottle mouth thread has no burrs, the cavity alignment accuracy is high, the thin wall thickness is uniform, the appearance is more beautiful and smooth, and it is suitable for transparent bottles with high appearance requirements, especially for small-capacity bottles with high bottle mouth accuracy and uniform bottle body thickness.

[0049] Preferably, in this embodiment, the translation mechanism 7 includes a driving gear box 71, a first rack 72 and a second rack 73. The driving gear box 71 is arranged on the outer side of the mold frame 2. The first rack 72 is meshed with the driving gear box 71 and connected to the outer side of the injection mold 5. The second rack 73 is meshed with the driving gear box 71 and connected to the outer side of the blown film. The first rack 72 and the second rack 73 are both extended along the front-to-back direction. When the driving gear box 71 is running, it can drive the first rack 72 and the second rack 73 to move along the front-to-back direction, so that the blow mold 6 and the injection mold 5 can move along the front-to-back direction, and the injection mold 5 and the blow mold 6 are further guided and positioned.

[0050] Specifically, the driving gear box 71 includes a gear box body 711, a gear motor, and a driving gear 712, a first driven gear 713, and a second driven gear 714 arranged in the gear box body 711. The gear motor is used to drive the driving gear 712. The first driven gear 713 and the second driven gear 714 are both meshed with the driving gear 712. The first rack 72 penetrates into the gear box body 711 and meshes with the first driven gear 713. The second rack 73 penetrates into the gear box body 711 and meshes with the second driven gear 714. The gear motor rotates to drive the driving gear 712 to rotate, thereby driving the first driven gear 713 and the second driven gear 714 to rotate, so that the first rack 72 and the second rack 73 move in the front-rear direction. The translation mechanism 7 of this embodiment has high efficiency in coordination, simple structure, is easy to use, and can play a guiding role. Preferably, the translation mechanism 7 is provided in plurality, and the left and right sides of the mold frame 2 are provided with the same number of translation mechanisms 7, so that the injection mold 5 and the blow mold 6 are subjected to more balanced forces when moving, and the moving process is smoother.

[0051] Similarly, in this embodiment, at least two slide rails 22 are provided, and the two slide rails 22 are respectively provided on the left and right sides of the bottom side of the mold frame 2, so that the movement process of the injection mold 5 and the blow mold 6 is smoother.

[0052] Specifically, the rotary mold 3 is rotatably connected to the mold frame 2 via a rotating shaft 34, and the rotary drive member 4 includes a servo motor 41 and a reducer 42 connected to the servo motor 41. The output shaft of the reducer 42 is provided with a first gear 43, and the outer periphery of the rotary shaft 34 is provided with a second gear 44 meshed with the first gear 43. The servo motor 41 and the reducer 42 are used to drive the second gear 44 to rotate, thereby driving the rotating shaft 34 and the rotary mold 3 to rotate, so that the movement of the rotary mold 3 can be more stable, the rotation speed can be controlled, and the operation is convenient.

[0053] Furthermore, the integrated injection-blow-molding mold of this embodiment also includes a controller (not shown in the figure), and the mold frame 2 is also provided with a sensing switch for sensing the rotation of the second gear 44 into place. The sensing switch (not shown in the figure), the servo motor 41, and the gear motor are electrically connected to the controller respectively. The controller is used to receive the signal transmitted by the sensing switch and control the rotation of the servo motor 41 and the gear motor, thereby driving the rotating mold 3 to rotate back and forth and the injection mold 5 and the blow mold 6 to move back and forth.

[0054] In this embodiment, the inductive switch can be an inductive proximity switch in the prior art, which is a non-contact detection switch used to sense the approach of a metal target; its working principle can refer to the working principle of the inductive proximity switch in the prior art. In this embodiment, the built-in inductive switch is installed on the top of the mold frame 2, and the sensing part of the inductive switch is close to the top of the rotating mold 3, corresponding to the built-in locator on the top of the rotating mold 3. When the second gear 44 drives the rotating shaft 34 to rotate 180°, that is, the rotating mold 3 rotates 180°, the locator rotates to the bottom of the inductive switch, and the inductive switch senses the locator information below, that is, transmits a signal to the controller, and as the rotating mold 3 rotates, when the locator passes the inductive switch, the inductive switch cannot sense it, that is, no signal is transmitted. The controller can determine whether the rotating mold 3 has completed a rotation of 180° based on the signal transmitted by the induction switch. Through such a design, the specific actions of the servo motor 41 and the gear motor can be controlled according to the rotation of the second gear 44, thereby driving the rotating mold 3 to rotate back and forth and the injection mold 5 and the blow mold 6 to move back and forth, forming a coordination so that the injection molding and blow molding work can be carried out synchronously.

[0055] Preferably, in this embodiment, the rotating shaft 34 includes an upper rotating shaft 341 and a lower rotating shaft 342, and the upper rotating shaft 341 and the lower rotating shaft 342 are respectively arranged on the upper and lower sides of the rotating mold 3 and pass through the mold frame 2, and the second gear 44 is installed on the outer periphery of the upper rotating shaft 341.

[0056] The outer side of the lower rotating shaft 342 is sleeved with a pipeline sleeve 35 , and the pipeline sleeve 35 is provided with an air inlet and outlet 351 , a water inlet and outlet 352 , and an oil inlet and outlet 353 leading to the rotating mold 3 to ensure the normal use of the rotating mold 3 .

[0057] The injection blow molding integrated molding mold of this embodiment has the advantages of one-step injection blow molding integration, such as simultaneous preform injection and bottle blowing, high production efficiency, small equipment footprint, no need to heat the preform 8, low energy consumption, greatly improving the production efficiency and quality level of the product, while reducing labor costs, making the product more competitive. Compared with the existing mold frame 2 on the Green column, this patent:

[0058] 1. The mold frame 2 is fixed on the base 1, and the base 1 plays a fixing and supporting role, which well ensures the stability of the mold frame 2 and the rotation stability of the rotating mold 3 driven by the rotating drive member 4 on the mold frame 2 through the rotating shaft 34;

[0059] 2. Through the sliding guide between the lower slider 221 and the slide rail 22, and the guide between the racks on both sides and the driving gear box 71,

[0060] The multi-stage guide cooperation between the frame guide column 21 and the first and second frame guide sleeves 63, and the mold guide column 32 and the first and second guide holes can realize multiple guide positioning, thereby realizing smooth mold opening and closing and high-precision positioning between the molds, ensuring high-precision alignment between the core center of the rotating mold 3 and the center of the injection cavity 52 of the injection mold 5 and the center of the blow cavity 62 of the blow mold 6, and the product has a small parting line;

[0061] 3. The rational design of the rotary drive member 4 enables the mold of the present application to have the advantages of smooth operation, high repetition accuracy and low production noise;

[0062] 4. On the basis of the traditional injection molding machine, the injection molding and blow molding integrated molding mold of this application can be installed to realize the integration of injection molding and blow molding, which has strong applicability, simple equipment transformation and fast production line transformation;

[0063] 5. The mold frame 2 does not need to be fixed on the Green column, and the mold volume and weight do not need to consider the size, spacing, load-bearing capacity, etc. of the Green column. The cavity space of the rotary mold 3 of the present application is large, and the molding efficiency is greatly improved.

[0064] It should be noted that, in the present application, the terms "upper", "lower", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the present embodiment, the rotation axis of the rotary mold is in the vertical direction, and the injection mold and the blow mold are respectively arranged on the front and rear sides of the rotary mold. It can be understood that in some other embodiments, the rotation axis of the rotary mold can also be in the horizontal direction. In this case, the injection mold and the blow mold are respectively arranged on the upper and lower sides of the rotary mold. Of course, the injection mold and the blow mold do not necessarily need to be arranged on opposite sides of the rotary mold, and can also be arranged with the rotation axis as the center and 90° apart.

[0065] Based on the injection-blow-molding integrated molding die of this embodiment, a method for producing a hollow bottle is also provided.

[0066] A method for producing a hollow bottle, using the above-mentioned injection-blow-molding integrated molding die, comprises the following steps:

[0067] S1, first injection molding: the injection mold 5 and the blow mold 6 are respectively close to the front and rear sides of the mold frame 2 until they are molded with the front and rear sides of the rotating mold 3, and the multiple bottle mouth cores 31 and core rods 33 on one side of the rotating mold 3 are respectively extended into the multiple injection cavities 52, and the hot runner 54 passes the plastic melt into the multiple injection cavities 52 through the glue inlet to produce multiple bottle preforms 8;

[0068] S2, first exchange of positions: the injection mold 5 and the blow mold 6 are respectively away from the front and rear sides of the mold frame 2, and the rotary mold 3 is rotated until one side of the rotary mold 3 with the preform 8 faces the blow mold 6;

[0069] S3, injection molding and blow molding are carried out simultaneously: the injection mold 5 and the blow mold 6 are respectively close to the front and rear sides of the mold frame 2 until they are molded with the rotating mold 3, wherein the multiple bottle mouth cores 31 and the core rods 33 on one side of the rotating mold 3 are respectively extended into the multiple injection molding cavities 52, and the hot runner 54 passes the plastic melt into the multiple injection molding cavities 52 through the glue inlet to form multiple bottle preforms 8. At the same time, the multiple bottle preforms 8 on the other side of the rotating mold 3 are extended into the multiple blow molding cavities 62, and the multiple core rods 33 are extended into the interior of the bottle preforms 8. The blowing channel at the bottom of the core rod 33 is opened, and the multiple bottle preforms 8 are blow-molded to obtain multiple hollow bottles;

[0070] S4: Discharging: The injection mold 5 and the blow mold 6 are respectively away from the front and rear sides of the mold frame 2, the core rod 33 is retracted into the corresponding bottle mouth core 31, the ejector rod ejects the hollow bottle to make it fall into the finished product chute 23, and the rotary mold 3 is rotated until one side of the rotary mold 3 with the bottle embryo 8 faces the blow mold 6;

[0071] S5. Repeat the above steps S3 and S4.

[0072] In this hollow bottle production method, injection molding and blow molding can be achieved simultaneously in a complete set of molds, and the bottle blank obtained by injection molding on one side of the rotating mold 3 is directly turned over to the other side for blow molding, thereby reducing the structure of long-distance movement between the traditional injection mold 5 and the blow mold 6, reducing the overall volume, reducing the space volume occupied by the overall equipment, and reducing the time for transferring the bottle blank, thereby greatly improving the overall production efficiency.

[0073] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. An integrated injection and blow molding mold, characterized in that: include: A base, wherein the base is fixedly arranged; A mold frame is fixed on the base, a rotating mold is rotatably connected in the mold frame, a rotating driving member for driving the rotating mold to rotate is arranged on the mold frame, frame guide pillars extending in the front-to-back direction are arranged on both the front and rear sides of the mold frame, a slide rail extending in the front-to-back direction is arranged on the bottom side of the mold frame, a plurality of bottle mouth cores and mold guide pillars are arranged on both the front and rear sides of the rotating mold, a core rod with a blowing channel is arranged in each of the bottle mouth cores, and the core rod can be extended and retracted relative to the bottle mouth core; An injection mold is arranged on the front side of the mold frame, a first support seat is arranged on the bottom side of the injection mold, the first support seat is slidably connected with the slide rail through a slider, a plurality of injection cavities corresponding to the bottle mouth core and the core rod are arranged on the rear side of the injection mold, a glue injection port, a hot runner and a glue inlet needle valve are arranged on the injection mold, and a first frame guide sleeve corresponding to the frame guide column and a first mold guide hole corresponding to the mold guide column are also arranged on the injection mold; A blow mold is arranged on the rear side of the mold frame, a second support seat is arranged on the bottom side of the blow mold, the second support seat is slidably connected to the slide rail through a slider, a plurality of blow molding cavities corresponding to the bottle mouth core and the core rod are arranged on the front side of the blow mold, a second frame guide sleeve corresponding to the frame guide column and a second mold guide hole corresponding to the mold guide column are arranged on the blow mold, an ejector rod is also arranged on the blow mold, the ejector rod is used to eject the hollow bottle, and a finished product slide groove for receiving the hollow bottle is also arranged on the side of the mold frame facing the blow mold; The translation mechanism is arranged on the mold frame, and the translation mechanism can drive the injection mold and the blow mold to approach or move away from the rotating mold along the front-rear direction.

2. The injection blow molding integrated molding die according to claim 1, characterized in that: The translation mechanism includes a driving gear box, a first rack and a second rack. The driving gear box is arranged on the outside of the mold frame. The first rack is engaged with the driving gear box and connected to the outside of the injection mold. The second rack is engaged with the driving gear box and connected to the outside of the blown film. The first rack and the second rack are both extended along the front-to-back direction.

3. The injection blow molding integrated molding die according to claim 2, characterized in that: The translation mechanism is provided in plurality, and the left and right sides of the mold frame are both provided with the same number of translation mechanisms.

4. The injection blow molding integrated molding die according to claim 2, characterized in that: The driving gearbox includes a gearbox body, a gear motor, and a driving gear, a first driven gear and a second driven gear arranged in the gearbox body. The gear motor is used to drive the driving gear. The first driven gear and the second driven gear are both engaged with the driving gear. The first rack penetrates into the gearbox body and is engaged with the first driven gear. The second rack penetrates into the gearbox body and is engaged with the second driven gear.

5. The integrated injection-blow molding mold according to any one of claims 1 to 4, characterized in that: At least two slide rails are provided, and the two slide rails are respectively provided on the left and right sides of the bottom side of the mold frame.

6. The integrated injection-blow molding mold according to claim 4, characterized in that: The rotating mold is rotatably connected to the mold frame via a rotating shaft. The rotating driving member includes a servo motor and a reducer connected to the servo motor. The output shaft of the reducer is provided with a first gear. The outer periphery of the rotating shaft is provided with a second gear meshing with the first gear.

7. The integrated injection-blow molding mold according to claim 6, characterized in that: It also includes a controller, and the mold frame is also provided with an induction switch for sensing that the second gear has rotated into place. The induction switch, servo motor, and gear motor are electrically connected to the controller respectively. The controller is used to receive the signal transmitted by the induction switch and control the rotation of the servo motor and the gear motor, thereby driving the reciprocating rotation of the rotating mold and the reciprocating movement of the injection mold and the blow mold.

8. The integrated injection-blow molding mold according to claim 7, characterized in that: The rotating shaft comprises an upper rotating shaft and a lower rotating shaft, the upper rotating shaft and the lower rotating shaft are respectively arranged on the upper and lower sides of the rotating mold and penetrate the mold frame, and the second gear is installed on the outer periphery of the upper rotating shaft.

9. The integrated injection-blow molding mold according to claim 8, characterized in that: The outer sleeve of the lower rotating shaft is provided with a pipeline sleeve, and the pipeline sleeve is provided with air inlet and outlet, water inlet and outlet, and oil inlet and outlet leading to the rotating mold.

10. A method for producing a hollow bottle, using the injection-blow-molding integrated molding die according to any one of claims 1 to 9, characterized in that: The steps include: S1, first injection molding: the injection mold and the blow mold are respectively close to the front and rear sides of the mold frame until they are molded with the front and rear sides of the rotating mold, a plurality of bottle mouth cores and core rods on one side of the rotating mold are respectively extended into the plurality of injection molding cavities, and the hot runner passes the plastic melt into the plurality of injection molding cavities through the glue inlet to produce a plurality of bottle embryos; S2, first exchange of positions: the injection mold and the blow mold are respectively away from the front and rear sides of the mold frame, and the rotary mold is rotated until the side of the rotary mold with the preform faces the blow mold; S3, injection molding and blow molding are carried out simultaneously: the injection mold and the blow molding mold are respectively close to the front and rear sides of the mold frame until they are molded with the rotating mold, wherein the multiple bottle mouth cores and core rods on one side of the rotating mold are respectively extended into the multiple injection molding cavities, and the hot runner passes the plastic melt into the multiple injection molding cavities through the glue inlet to form multiple bottle preforms. At the same time, the multiple bottle preforms on the other side of the rotating mold are extended into the multiple blow molding cavities. After the multiple core rods are extended into the interior of the bottle preforms, the blowing channel at the bottom of the core rod is opened, and the multiple core rods perform blow molding on the multiple bottle preforms to obtain multiple hollow bottles; S4: Discharging: The injection mold and the blow mold are respectively moved away from the front and rear sides of the mold frame, the core rod is retracted into the corresponding bottle mouth core, the ejector rod ejects the hollow bottle to make it fall into the finished product chute, and the rotary mold is rotated until the side of the rotary mold with the bottle embryo faces the blow mold; S5. Repeat the above steps S3 and S4.

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