Rotary plastic bottle injection blow molding device

Abstract

The utility model discloses a rotary type plastic bottle injection blow molding device which comprises a fixed mold plate and a movable mold plate, a pair of blow molding ejection oil cylinders, at least two pairs of blow molding half molds and corresponding blow molding opening and closing angle pins are arranged on the movable mold plate, and opening and closing guide chutes are formed in the blow molding half molds. Piston rods of the pair of blow molding ejection oil cylinders are connected with blow molding mold linkage rods, and the blow molding half molds are movably arranged on the blow molding mold linkage rods in a penetrating mode. A pair of half piece ejection oil cylinders, an injection mold and a corresponding bottle opening injection molding half piece are arranged on the fixed mold plate, piston rods of the pair of half piece ejection oil cylinders are connected with a half piece linkage rod, and the bottle opening injection molding half piece is movably arranged on the half piece linkage rod in a penetrating mode. Half piece opening and closing angle pins in one-to-one correspondence with the bottle opening injection molding Half pieces are arranged on the fixed mold plate, and corresponding opening and closing guide chutes are formed in the bottle opening injection molding Half pieces. The rotary plastic bottle injection blow molding device is particularly suitable for producing small plastic bottles.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of plastic bottle injection blow forming device, specifically to a kind of rotary plastic bottle injection blow forming device. BACKGROUND

[0002] At present, in the plastic injection blow industry, the traditional rotary plastic bottle injection blow forming device adopts the mode of relative parallel movement of oil cylinder or air cylinder to open and close mold, because the space occupied is larger, so in the rotary plastic bottle injection blow forming device, usually only one to two groups of blow molding half-mold are set, when two groups of blow molding half-mold are set, corresponding connecting rod transmission mechanism needs to be increased, so that the space occupied is larger, and also, make the whole open-close mold structure more complex. However, when adopting rotary plastic bottle injection blow forming device to blow small bottles, it is urgent to increase the number of blow molding half-mold, because if blow molding module is too few, it will lead to too low utilization of equipment, and production cost increases. INVENTION CONTENTS

[0003] The utility model solves the technical problems that: provide a kind of rotary plastic bottle injection blow forming device that can simplify the open-close mold structure of blow molding half-mold.

[0004] The utility model discloses a technical scheme for solving the above technical problems: a rotary plastic bottle injection blow forming device, comprising: oppositely arranged fixed mold plate and movable mold plate, the movable mold plate is provided with at least two blow molds side by side on the side towards the fixed mold plate, each blow mold comprises: a pair of blow mold halves arranged side by side in the same direction, each pair of blow mold halves is respectively provided with two or more blow cavities of the same number, and the blow cavities on each pair of blow mold halves correspond to each other, each pair of blow mold halves is arranged on the movable mold plate through blow mold half opening and closing drive mechanism, and the specific arrangement mode is: blow ejector cylinders are arranged on the outside of both sides blow mold on the movable mold plate, blow mold linkage rods are arranged on the piston rods of both sides blow ejector cylinders, all blow mold halves are movably arranged on the blow mold linkage rods, blow opening and closing inclined pins corresponding to the blow mold halves are respectively arranged on the movable mold plate, opening and closing guide inclined grooves corresponding to the corresponding blow opening and closing inclined pins are arranged on the blow mold halves, and the blow opening and closing inclined pins are movably arranged in the opening and closing guide inclined grooves on the corresponding blow mold halves; an injection mold is arranged on the side of the fixed mold plate towards the movable mold plate, and the injection mold is provided with bottle body injection cavities corresponding to the blow cavities, that is, the blow cavities on each pair of blow mold halves correspond to the corresponding row of bottle body injection cavities on the injection mold, the fixed mold plate is provided with bottle mouth injection molds corresponding to the number of rows of bottle body injection cavities through a half opening and closing drive mechanism, each bottle mouth injection mold comprises a pair of bottle mouth injection halves, each pair of bottle mouth injection halves is provided with bottle mouth injection cavities of the same number as the number of cavities in the row of bottle body injection cavities on the injection mold, the bottle mouth injection cavities communicate with the corresponding bottle body injection cavities; core rotating frames are slidably arranged on both sides of the injection mold on the fixed mold plate through guide columns, a core rotating plate is rotatably arranged between the two core rotating frames, that is, the two ends of the core rotating plate are rotatably arranged on the core rotating frame on the corresponding side through rotating shafts, the core rotating plate is located between the bottle mouth injection halves and the blow mold, a core translation drive mechanism for driving the core rotating plate to slide along the guide column is arranged on the fixed mold plate or / and the movable mold plate, a core rotating drive mechanism for driving the rotating shaft on the core rotating frame on the side to rotate is arranged on the core rotating frame on the arbitrary side, a core rotating plate locking mechanism is arranged on the core rotating frame on the arbitrary side, the core rotating plate is symmetrically provided with injection blow cores corresponding to the blow cavities, so that when the injection blow cores in one injection blow core group are located in the corresponding blow cavities, the injection blow cores in the other injection blow core group are located in the corresponding bottle body injection cavities and bottle mouth injection cavities; a hot runner communicating with all bottle body injection cavities in the injection mold is arranged on the fixed mold plate; the injection blow cores and the core rotating plate are provided with blow forming mechanisms.

[0005] As a preferred solution, in the rotary plastic bottle injection blow molding device, the core translation driving mechanism comprises: a pair of fixed mold side pull rods arranged at both ends of the fixed mold plate towards the movable mold plate, and a pair of movable mold side pull rods arranged at both ends of the movable mold plate towards the fixed mold plate, the fixed mold side pull rods and the movable mold side pull rods are parallel to the guide column, one end of the fixed mold side pull rods and the movable mold side pull rods is provided with a limiting cap, the other end of the fixed mold side pull rods is arranged on the fixed mold plate after passing out from one side of the core rotary frame, and the other end of the movable mold side pull rods is arranged on the movable mold plate after passing out from the other side of the core rotary frame.

[0006] As a preferred solution, in the rotary plastic bottle injection blow molding device, the specific arrangement of the movable mold side pull rod and the movable mold plate is that a connecting thread is arranged on the corresponding end of the movable mold side pull rod to form a connecting thread end, a threaded mounting hole corresponding to the connecting thread on the movable mold side pull rod is arranged on the movable mold plate, and the connecting thread end of the movable mold side pull rod is arranged in the threaded mounting hole on the movable mold plate.

[0007] As a preferred solution, in the rotary plastic bottle injection blow molding device, the specific structure of the core translation driving mechanism comprises: core push-pull oil cylinders arranged at both ends of the fixed mold plate towards the movable mold plate, and the piston rods of the core push-pull oil cylinders are respectively connected with the corresponding core rotary frames.

[0008] As a preferred solution, in the rotary plastic bottle injection blow molding device, the specific structure of the half-piece opening and closing driving mechanism comprises: a pair of half-piece ejection oil cylinders arranged on the fixed mold plate at both sides of the injection mold, half-piece connecting rods are connected to the piston rods of the half-piece ejection oil cylinders at both sides, all of the bottle mouth injection half-pieces are movably arranged on the half-piece connecting rods, the fixed mold plate is respectively provided with half-piece opening and closing inclined pins corresponding to the bottle mouth injection half-pieces one by one, the bottle mouth injection half-pieces are respectively provided with opening and closing guide inclined grooves corresponding to the half-piece opening and closing inclined pins one by one, and the half-piece opening and closing inclined pins are movably arranged in the opening and closing guide inclined grooves of the corresponding bottle mouth injection half-pieces.

[0009] As a preferred scheme, in the rotary plastic bottle injection blow molding device, the specific structure of the half part opening and closing driving mechanism comprises: a pair of half part ejection oil cylinders arranged on the fixed mold plate on both sides of the injection mold, half part connecting rods are connected on the piston rods of the half part ejection oil cylinders on both sides, all bottle mouth injection half parts are movably arranged on the half part connecting rods, the fixed mold plate is provided with half part opening and closing inclined pins corresponding to the outermost bottle mouth injection half parts on both sides of the injection mold, the outermost two bottle mouth injection half parts are provided with opening and closing guide inclined grooves corresponding to the corresponding half part opening and closing inclined pins, and the half part opening and closing inclined pins are movably arranged in the opening and closing guide inclined grooves of the corresponding bottle mouth injection half parts.

[0010] As a preferred scheme, in the rotary plastic bottle injection blow molding device, the core rotary driving mechanism comprises: a rotary driving shaft rotatably arranged on a core rotary frame, the rotary driving shaft is arranged together with a rotary shaft on the corresponding side, the rotary driving shaft is provided with a rotary driving gear, and the core rotary frame is further provided with a rotary driving oil cylinder; a driving rack meshing with the rotary driving gear is arranged on the piston rod of the rotary driving oil cylinder.

[0011] As a preferred scheme, in the rotary plastic bottle injection blow molding device, a connecting groove transversely penetrating the center of the rotary driving shaft is formed in the end face of the rotary driving shaft connected with the rotary shaft, and a connecting boss corresponding to the connecting groove of the rotary driving shaft is arranged on the rotary shaft, and the connecting boss is clamped in the connecting groove of the rotary driving shaft.

[0012] As a preferred scheme, in the rotary plastic bottle injection blow molding device, the core rotary plate locking mechanism comprises: a core rotary plate locking cylinder arranged on the core rotary frame, a core rotary plate positioning pin is arranged on the piston rod of the core rotary plate locking oil cylinder, and the core rotary plate is provided with a core rotary plate positioning pin hole corresponding to the core rotary plate positioning pin.

[0013] As a preferred scheme, in the rotary plastic bottle injection blow molding device, a guide sleeve corresponding to the guide column is arranged in the movable mold plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model discloses a blow -molding ejecting oil cylinder is arranged at the both sides of the movable template of blow -molding mould, blow -molding mould linkage rod is connected on the piston rod of both sides blow -molding ejecting oil cylinder, all blow -molding half moulds are movably arranged on blow -molding mould linkage rod, blow -molding open -close inclined pin corresponding with blow -molding half mould is arranged on the movable template, the corresponding open -close guide inclined groove is seted up on blow -molding half mould, blow -molding open -close inclined pin movably arranges in the open -close guide inclined groove on corresponding blow -molding half mould, and the corresponding bottle opening injection mould of the row of injection cavity of bottle body is seted up on the fixed template side, the half part ejecting oil cylinder is seted up on the both sides of injection mould on the fixed template, half part linkage rod is connected on the piston rod of both sides half part ejecting oil cylinder, all bottle opening injection half parts are movably arranged on half part linkage rod, corresponding half part open -close inclined pin is arranged on the fixed template, corresponding open -close guide inclined groove is seted up on bottle opening injection half part, half part open -close inclined pin movably arranges in the open -close guide inclined groove of corresponding bottle opening injection half part, greatly simplify the structure of mould opening and closing, greatly reduce the volume, thereby reduce the occupied space, reduce use cost, simultaneously, also make the work of mould opening and closing structure more synchronous and stable.

[0016] 2. The utility model discloses a fixed template both ends each setting a fixed template side pull rod, movable template's both ends each setting a movable template side pull rod, utilizes movable template's movement, realized the movement of core swivel plate, greatly saved the cost.

[0017] 3. The utility model discloses a core swivel drive mechanism adopts the transmission mode of gear and rack, greatly simplifies the transmission structure, saves the cost.

[0018] 4. The utility model discloses a core swivel plate locking oil cylinder's piston rod is seted up with the core swivel plate positioning pin, the core swivel plate positioning pin hole corresponding with the core swivel plate positioning pin is seted up on the core swivel plate in the mode of realizing the automation of core swivel plate locking.

[0019] 5. The utility model discloses a movable template is seted up with the guide bush corresponding with the guide column, makes the activity of guide column more smooth. ACCURACY OF DRAWINGS

[0020] Figure 1 It is the closing view of the first plastic bottle injection blow molding device of the utility model.

[0021] Figure 2 It is the opening view of the first plastic bottle injection blow molding device of the utility model.

[0022] Figure 3 It is the installation structure schematic diagram of injection blow core in the first plastic bottle injection blow molding device.

[0023] Figure 4It is the first plastic bottle injection blow molding device's closing mold side view of the utility model.

[0024] Figure 5 It is the first plastic bottle injection blow molding device's opening mold side view of the utility model.

[0025] Figure 6 It is the second plastic bottle injection blow molding device's closing mold plan view of the utility model.

[0026] Figure 7 It is the second plastic bottle injection blow molding device's opening mold plan view of the utility model.

[0027] Figure 8 It is the installation structure schematic diagram of injection blow core in the second plastic bottle injection blow molding device.

[0028] Figure 9 It is the second plastic bottle injection blow molding device's closing mold side view of the utility model.

[0029] Figure 10 It is the second plastic bottle injection blow molding device's opening mold side view of the utility model.

[0030] Figure 11 It is the third plastic bottle injection blow molding device's closing mold plan view of the utility model.

[0031] Figure 12 It is the third plastic bottle injection blow molding device's opening mold plan view of the utility model.

[0032] Figure 13 It is the third plastic bottle injection blow molding device's closing mold side view of the utility model.

[0033] Figure 14 It is the third plastic bottle injection blow molding device's opening mold side view of the utility model.

[0034] Figures 1 to 141, fixed mold plate, 11, half opening and closing oblique pin, 110, mounting part, 12, fixed mold side pull rod, 120, limit cap, 13, core push-pull oil cylinder, 15, hot runner, 17, left half opening and closing oblique pin, 18, right half opening and closing oblique pin, 2, movable mold plate, 21, blow molding opening and closing oblique pin, 22, movable mold side pull rod, 220, limit cap, 3, injection molding module, 4, blow molding half mold, 40, blow molding ejection oil cylinder, 41, blow molding mold linkage rod, 43, drive adapter plate, 5, bottle mouth injection molding half, 50, half ejection oil cylinder, 51, half linkage rod, 53, drive adapter plate, 57, same direction opening and closing connecting rod, 58, same direction opening and closing connecting rod, 6, injection blow core, 61, injection blow core group, 62, injection blow core group, 68, core pressing plate, 7, core rotary frame, 70, rotary drive shaft, 701, connecting groove, 702, rotary drive gear, 71, rotary shaft, 711, connecting boss, 72, core rotary plate, 75, drive rack, 750, rotary drive oil cylinder, 78, core rotary plate locking cylinder, 781, core rotary plate positioning pin, 8, plastic bottle, 9, guide column, 90, guide sleeve. DETAILED DESCRIPTION

[0035] The specific implementation scheme of the rotary plastic bottle injection blow molding device is described in detail below with reference to the drawings.

[0036] Example 1

[0037] As Figures 1 to 5The utility model discloses a first rotary plastic bottle injection blow forming device, including: the opposite arrangement fixed mould plate 1 and movable template 2, movable template 2 is provided with five blow moulds (the number of blow mould can be determined according to actual conditions) in the side of towards fixed mould plate 1 side by side, and each blow mould includes: a pair of same direction and side by side arrangement blow mould half die 4 ( make five blow moulds ten blow mould half die 5 side by side arrangement together), each pair of blow mould half die is provided with eight blow cavity (the number of blow cavity can be determined according to actual conditions) respectively, and, each pair of blow mould half die 4 on blow cavity correspond with each other, and each pair of blow mould half die 4 is set up on movable template 2 through blow mould half die opening and closing drive mechanism, and the specific setting mode is: movable template 2 is provided with blow ejector cylinder 40 on the outside of both sides blow mould respectively, and the piston rod of both sides blow ejector cylinder 40 is provided with drive adapter plate 43 respectively, and both sides drive adapter plate 43 is provided with a pair of blow mould linkage rod 41 ( belong to the usual technology of the field, do not expand the description again here) that correspond with each other, and all ten blow mould half die 4 are movably provided on the blow mould linkage rod 41, and movable template 2 is provided with blow opening and closing inclined pin 21 corresponding with blow mould half die 4 respectively, and a pair of blow opening and closing inclined pin 21 corresponding with each pair of blow mould half die 4 is mutually axial symmetry, and blow mould half die 4 is provided with opening and closing guide inclined groove corresponding with corresponding blow opening and closing inclined pin 21, and blow opening and closing inclined pin 21 is movably provided in the opening and closing guide inclined groove on corresponding blow mould half die 4.The injection mold is provided on the side of the fixed mold plate 1 facing the movable mold plate 2, in the embodiment, the injection mold is composed of five injection mold blocks 3, each injection mold block 3 is provided with eight bottle body injection cavities corresponding to the blow cavities in the corresponding blow mold, thereby forming a row of bottle body injection cavities on the injection mold block 3 corresponding to the blow cavities on the blow mold, the fixed mold plate 1 is provided with five bottle mouth injection molds corresponding to the number of rows of bottle body injection cavities through the opening and closing driving mechanism of the half part, each bottle mouth injection mold comprises a pair of bottle mouth injection half parts 5, each pair of bottle mouth injection half parts 5 is provided with eight bottle mouth injection cavities (the same number of cavities as the corresponding row of bottle body injection cavities), the bottle mouth injection cavities are communicated with the corresponding bottle body injection cavities (which belongs to the conventional technology in the art, and will not be described here), the specific setting mode of the bottle mouth injection mold is that the fixed mold plate 1 is provided with a half part ejection oil cylinder 50 on both sides of the injection mold, that is, on both sides of the five injection mold blocks 3 as a whole, the piston rod of the half part ejection oil cylinder 50 on both sides is provided with a driving adapter plate 53, the driving adapter plates 53 on both sides are provided with a pair of half part linkage rods 51 parallel to each other (which belongs to the conventional technology in the art, and will not be described here), all the bottle mouth injection half parts 5 are movably arranged on the pair of half part linkage rods 51, the fixed mold plate 1 is respectively provided with a half part opening and closing inclined pin 11 corresponding to the bottle mouth injection half part 5, the bottle mouth injection half part 5 is provided with an opening and closing guide inclined groove corresponding to the half part opening and closing inclined pin 11, and the half part opening and closing inclined pin 11 is movably arranged in the opening and closing guide inclined groove of the corresponding bottle mouth injection half part 5; the fixed mold plate 1 is provided with a core rotating frame 7 on both sides of the injection mold through a guide column 9, and a core rotating plate 72 is rotatably arranged between the two core rotating frames 7, that is, the two ends of the core rotating plate 72 are rotatably arranged on the core rotating frame 7 on the corresponding side through a rotating shaft 71, the core rotating plate 72 is located between the bottle mouth injection half part 5 and the blow mold, and the fixed mold plate 1 and the movable mold plate 2 are provided with a core translation driving mechanism for driving the core rotating plate 72 to slide along the guide column 9, the core translation driving mechanism comprises a pair of fixed mold side pull rods 12 arranged on both ends of the fixed mold plate 1 towards the movable mold plate 2, and a pair of movable mold side pull rods 22 arranged on both ends of the movable mold plate 2 towards the fixed mold plate 1, the fixed mold side pull rod 12 and the movable mold side pull rod 22 are parallel to the guide column 9, one end of the fixed mold side pull rod 12 is provided with a limiting cap 120, one end of the movable mold side pull rod 22 is provided with a limiting cap 220, the other end of the fixed mold side pull rod 12 penetrates into the core rotating frame 7 from the upper side of one side of the core rotating frame 7 (the upper side of the core rotating frame 7 in the figure), and penetrates out from the lower side of the other side (the lower side of the core rotating frame 7 in the figure) and is arranged on the fixed mold plate 1, and the specific setting mode is that the corresponding end of the fixed mold side pull rod 12 (the end penetrating into the core rotating frame 7 from the upper side of one side of the core rotating frame 7 in the figure) is provided with a core rotating plate sliding block 121, the other end of the movable mold side pull rod 22 (the end penetrating into the core rotating frame 7 from the lower side of the other side of the core rotating frame 7 in the figure) is provided with a core rotating plate sliding block 221, and the core rotating plate sliding block 121 and the core rotating plate sliding block 221 are arranged on the core rotating plate 72. Figure 1 Figure 1 Figure 1 ​​The upper end of the mold plate 1 is provided with a connecting thread to form a connecting thread end. The fixed mold plate 1 is provided with a threaded mounting hole corresponding to the connecting thread on the fixed mold side tie rod 12. The connecting thread end of the fixed mold side tie rod 12 is disposed in the threaded mounting hole on the fixed mold plate 1 (which is a conventional technique in the art and will not be described in detail here); the other end of the moving mold side tie rod 22 extends from one side of the core rotating frame 7 ( Figure 1 Insert from the lower side of the middle, and from the other side ( Figure 1 The upper side of the middle) is inserted and set on the moving template 2, specifically the corresponding end of the moving template side tie rod 22 ( Figure 1 The lower end of the mold plate 2 is provided with a connecting thread to form a connecting thread end. The moving mold plate 2 is provided with a threaded mounting hole corresponding to the connecting thread on the moving mold side tie rod 22. The connecting thread end of the moving mold side tie rod 22 is provided in the threaded mounting hole on the moving mold plate 2 (this is conventional technology in the art and will not be described in detail here). The core rotation frame 7 on the left side is provided with a core rotation drive mechanism that drives the rotation shaft 71 on this side to rotate. The specific structure of the core rotation drive mechanism includes: a rotation drive shaft 70 rotatably provided on the core rotation frame 7 on the left side, and the rotation drive shaft 70 and the corresponding side ( Figure 1 The rotary shaft 71 (on the left side of the image) is set together, specifically as follows: the rotary drive shaft 70 is located at the end connected to the rotary shaft 71 (on the left side of the image). Figure 1A connecting groove 701 is formed on the end face of the rotary driving shaft 70 (the right end in the figure), the rotary shaft 71 is provided with a connecting boss 711 corresponding to the connecting groove 701 of the rotary driving shaft 70, and the connecting boss 711 is clamped in the connecting groove 701 of the rotary driving shaft 70; the rotary driving shaft 70 is provided with a rotary driving gear 702, the core rotary frame 7 is provided with a rotary driving oil cylinder 750 (a common technology in the field, which will not be described here), and the piston rod of the rotary driving oil cylinder 750 is provided with a driving rack 75 engaged with the rotary driving gear 702; corresponding to the blow molding and injection molding, the core rotary plate 72 is provided with five injection-blowing core groups 61 on one side and five injection-blowing core groups 62 symmetrically arranged on the other side, each of the injection-blowing core groups 61 and each of the injection-blowing core groups 62 contains eight injection-blowing cores 6; the specific arrangement is that the eight injection-blowing cores 6 in each injection-blowing core group 61 are arranged on one side of the core rotary plate 72 through a core pressing plate 68, and the eight injection-blowing cores 6 in each injection-blowing core group 62 are arranged on the other side of the core rotary plate 72 through a core pressing plate 68 (a common technology in the field, which will not be described here); so that when the injection-blowing cores 6 in the injection-blowing core group 62 are located in the corresponding blow molding cavity, the injection-blowing cores 6 in the injection-blowing core group 61 are just located in the corresponding bottle body injection molding cavity and bottle mouth injection molding cavity; the fixed mold plate 1 is provided with a hot runner 15 communicated with all the bottle body injection molding cavities in the five injection molding blocks 3; the injection-blowing core 6 and the core rotary plate 72 are provided with a blowing forming mechanism (a common technology in the field, which will not be described here); the fixed mold plate 1 is provided with a core rotary plate locking mechanism, which comprises: a core rotary plate locking cylinder 78 arranged on the core rotary frame 7, a core rotary plate positioning pin 781 arranged on the piston rod of the core rotary plate locking cylinder 78, and a core rotary plate positioning pin hole corresponding to the core rotary plate positioning pin 781 formed on the core rotary plate 72 (a common technology in the field, which will not be described here); the movable mold plate 2 is provided with a guide column hole corresponding to the guide column 9, and a guide sleeve 90 is arranged in the guide column hole.

[0038] Example 2

[0039] As Figures 6 to 10 shown, the second rotary plastic bottle injection-blowing forming device has the same structure as that in example 1 except that the core translation driving mechanism is different. The core translation driving mechanism in this embodiment comprises: a pair of core push-pull oil cylinders 13 arranged at both ends of the fixed mold plate 1 towards the movable mold plate 2, and the piston rods of the core push-pull oil cylinders 13 are connected with the corresponding side core rotary frame 7.

[0040] Example 3:

[0041] As Figures 11 to 14 shown, the third rotary plastic bottle blow molding device, its structure except part of the structure of the half-piece opening and closing drive mechanism is different, other structures are the same as the structure in example 2. The difference in the half-piece opening and closing drive mechanism is that: the left side of the mold plate 1 is provided with a left half-piece opening and closing inclined pin 17 corresponding to the leftmost bottle mouth injection half-piece 5, the right side of the mold plate 1 is provided with a right half-piece opening and closing inclined pin 18 corresponding to the rightmost bottle mouth injection half-piece 5, the leftmost bottle mouth injection half-piece 5 is provided with an opening and closing guide inclined groove corresponding to the left half-piece opening and closing inclined pin 17, the rightmost bottle mouth injection half-piece 5 is provided with an opening and closing guide inclined groove corresponding to the right half-piece opening and closing inclined pin 18, the left half-piece opening and closing inclined pin 17 is movably arranged in the opening and closing guide inclined groove of the leftmost bottle mouth injection half-piece 5, the right half-piece opening and closing inclined pin 18 is movably arranged in the opening and closing guide inclined groove of the rightmost bottle mouth injection half-piece 5, the left side direction opening and closing bottle mouth injection half-piece 5 is connected through a pair of same direction opening and closing connecting rods 57, the right side direction opening and closing bottle mouth injection half-piece 5 is connected through a pair of same direction opening and closing connecting rods 58 (it belongs to the conventional technology in the art, which will not be described here). Figure 11 and Figure 12 Figure 11 and Figure 12 In actual application, the half-piece opening and closing inclined pin 11 can be arranged on the mold plate 1 through the mounting portion 110 at the bottom thereof; or the half-piece opening and closing inclined pin 11 can be directly arranged on the corresponding side of the corresponding injection molding module 3 (it belongs to the conventional technology in the art, which will not be described here).

[0042]

[0043] ​​The working process of the utility model is as follows: in the mold opening state, the core rotating plate positioning pin 781 is inserted into the core rotating plate positioning pin hole on the core rotating plate 72 to position the core rotating plate 72, the movable mold pushes the core rotating plate 72 forward to close the injection mold, the injection blow core 6 in the injection blow core group 61 on one side and the bottle body injection cavity in the injection mold block 3 on the injection side and the bottle mouth injection cavity in each bottle mouth injection half piece 5 constitute a bottle blank injection forming mold, the blow molding cavity and the injection blow core 6 in the injection blow core group 62 on the other side constitute a blow molding forming mold, the molten plastic enters the bottle blank injection forming mold through the hot runner 15, the mold is opened after temperature control and cooling, the movable mold retreats, the core push-pull oil cylinder 13 pushes the core rotating frame 7 to move out in the direction of the movable mold, in this process, the bottle mouth injection half piece 5 is pushed out and opened along the half piece opening and closing inclined pin 11 under the action of the half piece ejection oil cylinder 50, the injection blow core group 61 takes out the bottle blank, after the core rotating frame 7 is in place, the core rotating plate positioning pin 781 is withdrawn from the core rotating plate positioning pin hole on the core rotating plate 72, then the core rotating plate 72 is rotated 180 DEG by the core rotating drive mechanism, the core rotating plate positioning pin 781 is inserted into the core rotating plate positioning pin hole on the core rotating plate 72 again to position the core rotating plate 72, the injection blow core without the bottle blank is aligned with the injection cavity, the injection blow core with the bottle blank is aligned with the blow molding cavity, when positioning, the blow molding mold is opened by the blow molding ejection oil cylinder 40 pushing it forward, the mechanical hand takes out the injection blow formed plastic bottle 8 from the blow molding cavity,Then the movable die plate 2 advances to close the mold, and so on.

[0044] To sum up, only for the preferred embodiment of the present application, not to limit the scope of the present application, any equivalent changes and modifications made in accordance with the shape, structure, features and spirit of the present application should be included in the scope of the present application.

Claims

1. A rotary injection blow molding apparatus for plastic bottles, comprising: A fixed template and a moving template are arranged opposite each other. The moving template has at least two blow molds arranged side-by-side on the side facing the fixed template. Each blow mold includes a pair of blow mold halves arranged side-by-side in the same direction. Each pair of blow mold halves has two or more identical blow cavities, and the blow cavities on each pair of blow mold halves correspond to each other. The characteristic feature is that each pair of blow mold halves is mounted on the moving template via a blow mold halves opening and closing drive mechanism. Specifically, blow ejection cylinders are mounted on the outer sides of the blow molds on both sides of the moving template. Blow mold linkage rods are mounted on the piston rods of the blow ejection cylinders on both sides. All blow mold halves are movably inserted through the blow molds. On the linkage rod, the moving template is respectively equipped with blow molding opening and closing inclined pins corresponding to the blow molding half molds. The blow molding half molds have opening and closing guide grooves corresponding to the corresponding blow molding opening and closing inclined pins. The blow molding opening and closing inclined pins are movably inserted into the opening and closing guide grooves on the corresponding blow molding half molds. On the fixed template, an injection mold is provided on the side facing the moving template. The injection mold has bottle body injection cavities corresponding to the blow molding cavities, that is: the blow molding cavities on each pair of blow molding half molds correspond to a corresponding row of bottle body injection cavities on the injection mold. The fixed template is equipped with bottle neck injection molds corresponding to the number of rows of bottle body injection cavities via a half-part opening and closing drive mechanism. Each bottle neck injection mold includes... A pair of bottle neck injection molding half-parts, each pair of bottle neck injection molding half-parts having the same number of bottle neck injection molding cavities as the row of bottle body injection molding cavities on the injection mold, the bottle neck injection molding cavities communicating with the corresponding bottle body injection molding cavities; the fixed mold plate has core rotating frames slidably arranged on both sides of the injection mold via guide pillars, and a core rotating plate is rotatably arranged between the two core rotating frames, that is: the two ends of the core rotating plate are respectively rotatably arranged on the core rotating frames on the corresponding side via rotation shafts, the core rotating plate is located between the bottle neck injection molding half-parts and the blow mold, the fixed mold plate and / or the moving mold plate are provided with cores for driving the core rotating plate to slide along the guide pillars. The translation drive mechanism includes a core rotation drive mechanism on one side of the core rotation frame that drives the rotation shaft on that side, and a core rotation plate locking mechanism on one side of the core rotation frame. The core rotation plate is symmetrically equipped with injection blow molding core groups corresponding to the blow molding cavities, such that when an injection blow molding core in one injection blow molding core group is located in its corresponding blow molding cavity, an injection blow molding core in another injection blow molding core group is located in its corresponding bottle body injection molding cavity and bottle neck injection molding cavity. The fixed template is equipped with hot runners that communicate with all bottle body injection molding cavities in the injection mold. The injection blow molding core and core rotation plate are equipped with a blow molding mechanism.

2. The rotary plastic bottle injection blow molding device according to claim 1, characterized in that, The core translation drive mechanism includes: a pair of fixed mold side tie rods facing the moving mold plate and disposed at both ends of the fixed mold plate, and a pair of moving mold side tie rods facing the fixed mold plate and disposed at both ends of the moving mold plate. Both the fixed mold side tie rods and the moving mold side tie rods are parallel to the guide post. One end of each of the fixed mold side tie rods and the moving mold side tie rods is provided with a limit cap. The other end of the fixed mold side tie rod passes through one side of the core rotation frame and is disposed on the fixed mold plate. The other end of the moving mold side tie rod passes through the other side of the core rotation frame and is disposed on the moving mold plate.

3. The rotary plastic bottle injection blow molding device according to claim 2, characterized in that, The specific arrangement of the moving mold side tie rod and the moving template is as follows: the corresponding end of the moving mold side tie rod is provided with a connecting thread to form a connecting thread end, and the moving template is provided with a threaded mounting hole corresponding to the connecting thread on the moving mold side tie rod, and the connecting thread end of the moving mold side tie rod is set in the threaded mounting hole on the moving template; the specific arrangement of the fixed mold side tie rod and the fixed template is as follows: the corresponding end of the fixed mold side tie rod is provided with a connecting thread to form a connecting thread end, and the fixed template is provided with a threaded mounting hole corresponding to the connecting thread on the fixed mold side tie rod, and the connecting thread end of the fixed mold side tie rod is set in the threaded mounting hole on the fixed template.

4. The rotary plastic bottle injection blow molding device according to claim 1, characterized in that, The specific structure of the core translation drive mechanism includes: core push-pull cylinders set at both ends of the fixed template facing the moving template, and the piston rods of the core push-pull cylinders are respectively connected to the core rotation frame on the corresponding side.

5. The rotary injection blow molding device for plastic bottles according to claim 1, characterized in that, The specific structure of the half-part opening and closing drive mechanism includes: a pair of half-part ejection cylinders located on both sides of the injection mold and set on the fixed platen; half-part linkage rods connected to the piston rods of the two half-part ejection cylinders; all bottle neck injection half-parts movably passing through the half-part linkage rods; the fixed platen is respectively provided with half-part opening and closing inclined pins corresponding to the bottle neck injection half-parts; the bottle neck injection half-parts are provided with opening and closing guide inclined grooves corresponding to the half-part opening and closing inclined pins; and the half-part opening and closing inclined pins movably passing through the opening and closing guide inclined grooves of the corresponding bottle neck injection half-parts.

6. The rotary injection blow molding device for plastic bottles according to claim 1, characterized in that, The specific structure of the half-part opening and closing drive mechanism includes: a pair of half-part ejection cylinders located on both sides of the injection mold and mounted on a fixed template; half-part linkage rods connected to the piston rods of the two half-part ejection cylinders; all bottle neck injection half-parts movably passing through the half-part linkage rods; the fixed template is provided on both sides of the injection mold with half-part opening and closing oblique pins corresponding to the outermost bottle neck injection half-parts; the two outermost bottle neck injection half-parts are provided with opening and closing guide oblique grooves corresponding to the corresponding half-part opening and closing oblique pins; the half-part opening and closing oblique pins movably passing through the opening and closing guide oblique grooves of the corresponding bottle neck injection half-parts; bottle neck injection half-parts opening and closing in the same direction are connected by a unidirectional opening and closing connecting rod.

7. The rotary plastic bottle injection blow molding device according to claim 1, characterized in that, The core rotation drive mechanism includes: a rotation drive shaft rotatably mounted on the core rotation frame, the rotation drive shaft being mounted together with a rotation shaft on the corresponding side, a rotation drive gear being mounted on the rotation drive shaft, a rotation drive cylinder being mounted on the core rotation frame, and a drive rack being mounted on the piston rod of the rotation drive cylinder that meshes with the rotation drive gear.

8. The rotary plastic bottle injection blow molding device according to claim 7, characterized in that, The rotary drive shaft has a connecting groove that passes laterally through the center of the rotary drive shaft on one end face connected to the rotary shaft. The rotary shaft has a connecting boss that corresponds to the connecting groove on the rotary drive shaft. The connecting boss is engaged in the connecting groove on the rotary drive shaft.

9. A rotary plastic bottle injection blow molding device according to claim 1, characterized in that, The core rotating plate locking mechanism includes: a core rotating plate locking cylinder disposed on the core rotating frame; a core rotating plate positioning pin disposed on the piston rod of the core rotating plate locking cylinder; and a core rotating plate positioning pin hole corresponding to the core rotating plate positioning pin being opened on the core rotating plate.

10. A rotary plastic bottle injection blow molding apparatus according to any one of claims 1 to 9, characterized in that, The moving template is provided with a guide sleeve corresponding to the guide post.

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