Core-rotating injection blow molding apparatus

Abstract

This utility model discloses a core-rotary injection blow molding device, comprising: a fixed mold base and a moving mold base arranged opposite to each other; at least one injection mold and a corresponding blow mold arranged parallel to each other on the fixed mold base; corresponding cavities are formed in the injection mold and the blow mold; a core rotation shaft is movably arranged in the moving mold base; a core rotation seat is arranged on the core rotation shaft; an injection blow core assembly corresponding to the injection and blow molds is arranged on the core rotation seat; a half-plate is slidably arranged on the moving mold side; a bottle neck injection mold corresponding to the injection mold and a bottle neck / shoulder blow mold corresponding to the blow mold are arranged on the half-plate; an injection half-plate opening and closing drive device is arranged between a pair of injection half-plates or between a pair of injection half-plates and the injection mold; a blow half-plate opening and closing drive device is arranged between a pair of blow molded half-plates or between a pair of blow molded half-plates and the blow mold. The core-rotary injection blow molding device of this utility model can be widely used in situations requiring labeling beyond half a circle.

Description

Technical Field

[0001] This utility model relates to an injection blow molding device, specifically a core rotary injection blow molding device. Background Technology

[0002] Currently, core-rotary injection blow molding equipment used for plastic bottle injection blow molding consists of two openable blow molding halves, equipped with a drive mechanism for opening and closing these halves. This drive mechanism occupies space, hindering the arrangement of multiple cavities and increasing costs. Furthermore, because the blow molding mold consists of two openable halves, it's impossible to apply labels beyond half a circle when making in-mold labeling bottles. In addition, to save time during actual operation, a pair of blow molding halves gradually close as they approach the blow molding mold (mold closing), making it difficult to control the timing of the blow molding half opening and closing cylinders. If it closes too early, the blow molding halves will damage the bottle neck; if it closes too late, they will collide with the blow molding mold. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a core rotary injection blow molding device with an integral blow molding cavity to facilitate whole-circle labeling and multi-row cavity arrangement.

[0004] The technical problem to be solved by this invention is to provide an injection blow molding device that is simple in structure, low in cost, and highly efficient, with an integral bottle body blow molding mold.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a core-rotary injection blow molding device, comprising: a fixed mold base and a moving mold base arranged opposite to each other, the moving mold base having at least two guide pillars facing the fixed mold base, the fixed mold base having guide pillar holes corresponding to the guide pillars, at least one injection mold and a corresponding blow mold arranged parallel to each other on the fixed mold base, the injection mold having a plurality of injection cavities, the blow mold having a blow cavity corresponding to the injection cavities, and the moving mold base having a core-rotary injection blow mold. The device is equipped with a core rotating shaft and a core rotation drive mechanism for driving the core rotating shaft. A core rotating seat is mounted on the core rotating shaft. On both sides of the core rotating shaft, injection blow molding core groups corresponding to the corresponding injection mold or blow mold are respectively arranged. Each injection blow molding core group includes injection blow molding cores that correspond one-to-one with the injection cavity in the injection mold or the blow cavity in the blow mold. The injection mold and the corresponding blow mold are symmetrically arranged on both sides of the core rotating shaft. The injection cavity in the injection mold and the blow cavity in the blow mold... The cavity corresponds to the corresponding injection blow molding core. A half-plate is slidably mounted on the guide post. A half-plate drive mechanism is provided on the fixed mold base and / or the moving mold base. The half-plate is provided with a bottle neck injection mold corresponding to the injection mold and a bottle neck / shoulder blow mold corresponding to the blow mold. The bottle neck injection mold includes a pair of injection half-pieces, each with a bottle neck injection half-cavity corresponding to the injection cavity in the injection mold. The bottle neck / shoulder blow mold includes a pair of blow molded half-pieces, each with a bottle neck injection half-cavity corresponding to the injection cavity in the blow mold. The bottle mouth and shoulder blow molding half cavity are corresponding to each other; an injection molding half opening and closing drive device for driving the opening and closing of the pair of injection molding half parts is provided between the pair of injection molding half parts or between the pair of injection molding half parts and the injection mold; a blow molding half opening and closing drive device for driving the opening and closing of the pair of blow molding half parts is provided between the pair of blow molding half parts or between the pair of blow molding half parts and the blow mold; a hot runner is provided on the fixed mold base, which communicates with all the injection molding cavities in the injection mold; a blow molding mechanism is provided in the injection blow core and the core rotary seat.

[0006] As a preferred embodiment, in the aforementioned core rotary injection blow molding device, a positioning locking mechanism is further provided between the moving mold base and the core rotary base.

[0007] As a preferred embodiment, in the aforementioned core rotary injection blow molding device, the positioning locking mechanism includes: a positioning locking cylinder disposed on the moving mold base, and the core rotary base having a pair of positioning locking holes corresponding to the piston rods of the positioning locking cylinder.

[0008] As a preferred embodiment, in the aforementioned core rotary injection blow molding apparatus, the core rotary drive mechanism includes: a rotary gear disposed on the core rotary shaft, and a linear power unit disposed on the moving mold base, wherein the drive rod of the linear power drive unit is provided with a rotary rack meshing with the rotary gear.

[0009] As a preferred embodiment, in the aforementioned core-rotary injection blow molding apparatus, an injection molding half-opening and closing driving device for driving the opening and closing of the pair of injection molding half-parts is provided between them. The specific structure includes: an injection molding half-opening and closing cylinder disposed on the outer injection molding half-part, a through hole corresponding to the piston rod of the injection molding half-opening and closing cylinder being provided on the outer injection molding half-part, and the piston rod of the injection molding half-opening and closing cylinder passing through the through hole on the outer injection molding half-part and connecting to the inner injection molding half-part.

[0010] As a preferred embodiment, in the aforementioned core-rotary injection blow molding apparatus, an injection molded half-part opening and closing drive device is provided between the pair of injection molded half-parts and the injection mold for driving the opening and closing of the pair of injection molded half-parts. Specifically, the injection mold is provided with outwardly opening and closing inclined pins on both sides of the injection mold facing the moving mold base. The injection molded half-parts are provided with injection guide inclined grooves corresponding to the injection molded half-parts on the corresponding sides of the injection mold. The injection molded half-parts are slidably disposed in the injection guide inclined grooves on the corresponding injection molded half-parts.

[0011] As a preferred embodiment, in the aforementioned core rotary injection blow molding apparatus, the specific structure of the blow molding half opening and closing drive device includes: a blow molding half opening and closing cylinder disposed on the outer blow molding half, the outer blow molding half having a through hole corresponding to the piston rod of the blow molding half opening and closing cylinder, the piston rod of the blow molding half opening and closing cylinder passing through the through hole on the outer blow molding half and connected to the inner blow molding half.

[0012] As a preferred embodiment, in the aforementioned core rotary injection blow molding device, the blow mold is provided with a blow molding clamping drive device that cooperates with a pair of blow molding half parts. The specific arrangement of the blow molding clamping drive device is as follows: blow molding clamping inclined pins that open outward are respectively provided on both sides of the blow mold facing the moving mold base, and the pair of blow molding half parts are located between the blow molding clamping inclined pins on both sides of the blow mold.

[0013] As a preferred embodiment, in the aforementioned core-rotary injection blow molding apparatus, the blow mold is an assembled structure, comprising: two blow molding halves and a blow molding cavity bottom disposed between the bottoms of the two blow molding halves.

[0014] As a preferred embodiment, in the aforementioned core rotary injection blow molding device, a guide sleeve corresponding to the guide post is provided in the guide post hole of the fixed mold base.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model transfers the molding of the bottle shoulder from the blow molding mold to the bottle mouth and bottle shoulder blow molding mold by setting a bottle mouth and bottle shoulder blow molding mold corresponding to the blow molding mold. In this way, the blow molding mold can be demolded without opening, so the blow molding mold can be set as an integral structure, which is conducive to arranging multiple rows of cavities. In addition, the blow molding cavity can be labeled around the whole circle, which greatly expands its application.

[0017] 2. This utility model provides a positioning locking mechanism between the moving mold base and the core rotary base, so that the injection blow molding core is locked in the position after rotating into place, allowing the injection blow molding core to be accurately inserted into the corresponding injection cavity and blow molding cavity.

[0018] 3. This utility model provides blow molding clamping pins that open outward on both sides of the blow molding mold facing the moving mold base. This allows a pair of blow-molded half parts to be precisely closed by means of the blow molding clamping pins and the mold closing process, effectively avoiding damage to the preform and the blow molding mold.

[0019] 4. This utility model, by setting the blow molding mold into an assembled structure, includes: two blow molding half molds and a blow molding cavity bottom set between the bottoms of the two blow molding half molds, which greatly facilitates the processing of the blow molding mold and greatly reduces the processing cost.

[0020] 5. This utility model makes the movement of the guide post in the fixed mold base smoother by setting a guide sleeve corresponding to the guide post in the guide post hole of the fixed mold base. Attached Figure Description

[0021] Figure 1 This is a top view of the injection blow molding device of this utility model in the mold-closed state.

[0022] Figure 2 This is a top view of the injection blow molding device described in this utility model, showing the process of opening the mold and applying the label.

[0023] Figure 3 This is a schematic diagram of the main structure of the fixed mold side.

[0024] Figure 4 This is a schematic diagram of the main view structure of the moving mold side.

[0025] Figure 5 This is a schematic diagram of the core rotation mechanism.

[0026] Figure 6 This is a side view diagram of the injection molding cavity during mold closing.

[0027] Figure 7 This is a side view of the blow molding cavity during mold closing.

[0028] Figure 8 This is a side view of the blow molding cavity during mold opening.

[0029] Figure 9 This is a top view of another injection blow molding device of this utility model in the mold-closed state.

[0030] Figures 1 to 9 The reference numerals in the attached drawings are as follows: 1. Fixed mold base; 15. Hot runner; 19. Guide post hole; 191. Guide sleeve; 2. Moving mold base; 20. Moving mold bottom plate; 21. Moving mold top plate; 25. Core rotation shaft; 251. Bearing; 252. Bearing; 26. Rotary gear; 27. Position locking cylinder; 271. Position locking pin; 272. Wear-resistant sleeve; 28. Rotary drive cylinder; 286. Rotary rack; 29. ​​Guide post; 3. Injection mold; 4. Blow mold; 40. Blow mold cavity bottom; 41. Blow mold half; 5. Bottle neck injection mold; 50. Injection half opening and closing cylinder; 51. Injection half part; 511. Bottle neck injection. 53. Injection molding opening and closing oblique pin; 56. Half-plate; 560. Core ejection access air passage; 561. Blow molding access air passage; 6. Bottle mouth and shoulder blow molding mold; 60. Blow molding half-plate opening and closing cylinder; 61. Blow molding half part; 611. Bottle mouth and shoulder blow molding half-cavity; 63. Injection molding closing oblique pin; 7. Injection blow molding core; 70. Core rotating plate; 703. Core ejection air passage; 71. Core pressure plate; 710. Core ejection connecting air passage; 712. Blow molding connecting air passage; 713. Blow molding air passage; 78. Blow molding mechanism; 8. Plastic bottle; 80. Bottle preform; 9. In-mold labeling robot; 99. Label. Detailed Implementation

[0031] The following describes in detail, with reference to the accompanying drawings, the specific implementation scheme of the core rotary injection blow molding device of this utility model.

[0032] Example 1:

[0033] like Figures 1 to 4As shown, the present invention discloses a core rotary injection blow molding device, comprising: a fixed mold base 1 and a moving mold base 2 arranged opposite to each other; a guide post 29 is respectively provided at the four corners of the moving mold base 2 facing the fixed mold base 1; the fixed mold base 1 has guide post holes 19 corresponding to the guide posts 29, and guide sleeves 191 are provided in the guide post holes 19; an injection mold 3 and a blow mold 4 are arranged side by side on the side of the fixed mold base 1 facing the moving mold base 2; the injection mold 3 has six injection cavities, and the blow mold 4 has six blow cavities corresponding to the injection cavities (this is conventional technology in the art and will not be described in detail here); a core rotary shaft 25 and a core rotary drive mechanism for driving the core rotary shaft 25 are movably arranged in the moving mold base 2, specifically configured as follows: the moving mold base... 2 includes a moving mold base plate 20 and a moving mold top plate 21 disposed on the moving mold base plate 20. The moving mold base plate 20 has a centrally located rotating shaft mounting hole corresponding to the outer end of the bearing 251 and the core rotating shaft 25. The moving mold top plate 21 has a rotating shaft mounting hole corresponding to the rotating shaft mounting hole on the moving mold base plate 20 (this is conventional technology in the art and will not be described further here). The core rotating shaft 25 is disposed in the rotating shaft mounting holes of the moving mold base plate 20 and the moving mold top plate 21 via a pair of bearings 251 and 252. Specifically, the inner end of the core rotating shaft 25 and the bearing 252 are disposed in the rotating shaft mounting hole of the moving mold top plate 21, and the outer end of the core rotating shaft 25 and the bearing 251 are disposed in the rotating shaft mounting hole of the moving mold base plate 20 (this is conventional technology in the art and will not be described further here). Figure 5 As shown, the core rotation drive mechanism includes: a rotary gear 26 mounted on the core rotation shaft 25, and a rotary drive cylinder 28 mounted on the moving mold base 2 as a linear power device. The piston rod of the rotary drive cylinder 28, serving as the drive rod of the linear power device, is equipped with a rotary rack 286 that meshes with the rotary gear 28. A core rotation seat is mounted on the core rotation shaft 25, comprising: a core rotation plate 70 connected to the core rotation shaft 25, and a core pressure plate 71 mounted on the core rotation plate 70. Figures 5 to 8As shown, a positioning locking mechanism is provided between the moving mold base 2 and the core rotating plate 70. This positioning locking mechanism includes: a positioning locking cylinder 27 mounted on the moving mold base 2; a pin hole corresponding to the piston rod of the positioning locking cylinder 27 is opened on the moving mold top plate 21; a wear-resistant sleeve 272 is installed in the pin hole; the piston rod of the positioning locking cylinder 27 serves as a positioning locking pin 271, which movably passes through the wear-resistant sleeve 272; a pair of positioning locking holes corresponding to the positioning locking pins 271 are symmetrically opened on the core rotating plate 70 (this is conventional technology in the field and will not be described further here), ensuring that the core rotating base rotates exactly half a revolution each time; two injection molding holes are symmetrically arranged on both sides of the core rotating shaft 25 via the core pressure plate 71 on the core rotating plate 70. The blow molding core assembly includes blow molding cores 7 that correspond one-to-one with the injection cavities on injection mold 3 or blow mold 4. Injection mold 3 and blow mold 4 are symmetrically arranged on both sides of the core rotation axis 25. The injection cavities in injection mold 3 and blow mold 4 correspond to the corresponding blow molding cores 7. A split base plate 56 is slidably mounted on the guide post 29. A split base plate driving mechanism (a common technique in the art, not described further here) is mounted on the split base plate 56. A bottle neck injection mold 5 corresponding to injection mold 3 and a bottle neck / shoulder blow mold 6 corresponding to blow mold 4 are mounted on the split base plate 56. The bottle neck injection mold 5 includes a pair of injection split parts 51. The bottle mouth and shoulder blow molding mold 6 includes a pair of blow molding half-cavities 61, each corresponding to a blow molding cavity in the injection mold 4. The blow molding half-cavities 61 are provided with bottle mouth and shoulder blow molding half-cavities 611 corresponding to blow molding cavities in the blow mold 4. An injection molding half-cavity opening and closing drive device is provided between the pair of injection molding half-cavities 51 for driving the opening and closing of the pair of injection molding half-cavities 51. This drive device includes an injection molding half-cavity opening and closing cylinder 50 located on the outer injection molding half-cavity 51. The outer injection molding half-cavity 51 has a through hole corresponding to the piston rod of the injection molding half-cavity opening and closing cylinder 50. The piston rod of the injection molding half-cavity opening and closing cylinder 50 passes through the through hole on the outer injection molding half-cavity 51 and connects with the inner injection molding half-cavity 51. The components 51 are connected (this is conventional technology in the art and will not be described in detail here); a blow molding half-part opening and closing drive device for driving the opening and closing of the pair of blow molding half-parts 61 is provided between them. The blow molding half-part opening and closing drive device includes: a blow molding half-part opening and closing cylinder 60 provided on the outer blow molding half-part 61, and a through hole corresponding to the piston rod of the blow molding half-part opening and closing cylinder 60 is provided on the outer blow molding half-part 61. The piston rod of the blow molding half-part opening and closing cylinder 60 passes through the through hole on the outer blow molding half-part 61 and is connected to the inner blow molding half-part 61 (this is conventional technology in the art and will not be described in detail here); a hot runner 15 communicating with all injection cavities in the injection mold 3 is provided on the fixed mold base 1.The injection blow molding core 7, core rotating plate 70, and core pressure plate 71 are equipped with a blow molding mechanism 78, including a blow molding air channel 713 and a core ejection air channel 703 (this is conventional technology in the art and will not be described in detail here).

[0034] In practical applications, the rotary drive cylinder 28 can also be other linear drive components such as pneumatic cylinders or electric cylinders; the half-base plate drive mechanism can also be set on the fixed mold base 1, or a mutually cooperating half-base plate drive mechanism can be set on the fixed mold base 1 and the moving mold base 2; the blow mold 4 is an assembled structure, including: two blow molding half molds 41, and a blow molding cavity bottom 40 set between the bottoms of the two blow molding half molds 41; such as 7 and Figure 8 As shown, the core rotary seat and the half-base plate 56 are provided with a core ejection inlet air channel 560 corresponding to the core ejection air channel 703 and a blow molding inlet air channel 561 corresponding to the blow molding air channel 713. The core pressure plate 71 and the core rotary plate 70 are also provided with a core ejection connecting air channel 710 connecting the core ejection air channel 703 and the core ejection inlet air channel 560. The core pressure plate 71 is also provided with a blow molding connecting air channel 712 connecting the blow molding air channel 713 and the blow molding inlet air channel 561. Because the core ejection inlet air channel 560 and the blow molding inlet air channel 561 are set... The half-base plate 56 automatically clamps the core ejection connecting air passage 710 and the core ejection access air passage 560, and the blow molding connecting air passage 712 and the blow molding access air passage 561 after mold closing. This eliminates the need for additional locking components to clamp the core ejection air passage 703 and the core ejection access air passage 560, and the blow molding air passage 713 and the blow molding access air passage 561. Furthermore, since the half-base plate 56 does not need to rotate, the external piping connected to the core ejection access air passage 560 and the blow molding access air passage 561 does not need to rotate back and forth, which can significantly extend the service life of the external piping.

[0035] The working process of the core rotary injection blow molding device described in Example 1 is as follows: the mold closes, the plasticized plastic enters the injection cavity through the hot runner 15, and after the preform is formed by temperature control, the mold opens, the moving mold retracts, and the injection molded half 51 and the injection blow core 7, along with the preform 80, are ejected from the injection cavity. After retracting to the correct position, the injection molded half 51 opens, and the half base plate 56 moves forward until the half base plate 56 exceeds the position of the preform 80 (see...). Figure 2(As shown), then, the core rotation drive mechanism drives the core rotation seat and the injection blow core 7 mounted on the core rotation seat to rotate into position. After being positioned by the positioning locking mechanism, the half base plate 56 retracts into position, the injection molded half part and the blow molded half part close, and then the moving mold moves forward to close into position. The plasticized plastic enters the injection cavity through the hot runner 15, and is then processed into a preform 80 through temperature control. The core ejection air passage 703, through the core ejection access air passage 560 and the core ejection connecting air passage 710, introduces air to push the piston to open the core head of the injection blow core 7. The blow molding air passage 713, through the blow molding access air passage 561 and the blow molding connecting air passage 713, pushes the piston to open the core head of the injection blow core 7. Compressed air is blown into the air inlet 712 and blown out through the air outlet between the core head and the core body of the injection blow molding core 7 (this is a conventional technique in the art and will not be described in detail here). After blowing for a certain period of time, the plastic bottle 8 is cooled and formed. After the preform and blow molding are completed, the moving mold retracts. All the injection blow molding cores 7 and a pair of injection molding half-parts 51 on the injection molding station retract with the preform 80. All the injection blow molding cores 7 and a pair of blow molding half-parts 61 on the blow molding station retract with the formed plastic bottle 8. After the moving mold retracts to its position, the pair of injection molding half-parts 51 open, and the half-part base plate 56 moves forward until the half-part base plate 56 exceeds the position of the preform 80 (see...). Figure 2 (As shown), then, a pair of blow-molded half parts 61 open, and the molded plastic bottle 8 falls off under gravity or is removed by a robotic arm. At this time, the in-mold labeling robot 9 can place the label 99 inside the blow molding cavity (see...). Figure 2 As shown), at the same time, the core rotation drive mechanism drives the core rotation seat and the injection blow core 7 installed on the core rotation seat to rotate into position. After being positioned by the positioning locking mechanism, the half base plate 56 retracts into position, and the injection molded half part 51 and the blow molded half part 61 close. After completion, the moving mold moves forward to close into position, and the next cycle continues. This cycle repeats.

[0036] Example 2:

[0037] like Figure 9As shown, the other type of core rotary injection blow molding device of this utility model has the same structure except for the different opening and closing structure of the injection molding half and the addition of a separate blow molding half mold closing mechanism. In this embodiment, the injection molding half opening and closing drive device is set between a pair of injection molding half 51 and the injection mold 3. Specifically, the injection mold 3 has injection molding opening and closing inclined pins 53 that open outward on both sides facing the moving mold base 2. The pair of injection molding half 51 has injection molding guide inclined grooves corresponding to the corresponding injection molding opening and closing inclined pins 53 on the injection mold 3. The injection molding opening and closing inclined pins 53 are slidably set in the injection molding guide inclined grooves on the corresponding injection molding half 51. The blow molding mold closing drive device is specifically set as follows: the blow mold 4 has blow molding mold closing inclined pins 63 that open outward on both sides facing the moving mold base 2. The pair of blow molding half 61 is located between the blow molding mold closing inclined pins 63 on both sides of the blow mold 4.

[0038] The working process of the core rotary injection blow molding device described in Example 2 is as follows: the mold closes, the plasticized plastic enters the injection cavity through the hot runner 15, and after the preform 80 is formed by temperature control, the mold opens, the moving mold retracts, and the injection molded half 51 and the injection blow core 7, along with the preform 80, are ejected from the injection cavity. During this process, the injection molded half 51 opens under the action of the injection opening and closing inclined pin 53. After reaching the set position, the half base plate 56 stops retracting, and the injection blow core 7 continues to retract. After retracting to the correct position, the core rotary mechanism drives the injection blow core 7 to rotate back to the correct position. After rotation and positioning, the moving mold moves towards... With the front mold closed, the injection-molded half 51 closes under the action of the injection molding opening and closing inclined pin 53. The plasticized plastic enters the injection cavity through the hot runner 15, and is then processed into a preform 80 under temperature control. The core ejection air passage 703, through the core ejection access air passage 560 and the core ejection connecting air passage 710, pushes the piston to open the core head of the injection blow molding core 7. The blow molding air passage 713 blows compressed air through the blow molding access air passage 561 and the blow molding connecting air passage 712, and blows it out through the air outlet between the core head and the core body of the injection blow molding core 7 (this is a conventional technique in this field and will not be discussed here). (Further description) After blowing air for a certain period of time, the plastic bottle 8 is cooled and formed. After the preform and blow molding are completed, the moving mold retracts. All the injection blow molding cores 7 and a pair of injection molding half-parts 51 on the injection molding station retract with the preform 80. The injection molding half-parts 51 open under the action of the injection opening and closing inclined pins 53. All the injection blow molding cores 7 and a pair of blow molding half-parts 61 on the blow molding station retract with the formed plastic bottle 8. After reaching the set position, the half-part base plate 56 stops retracting. The injection blow molding cores 7 continue to retract. The injection blow molding cores 7 on the injection molding station retract with the preform 80. The injection blow molding cores 7 on the blow molding station move from the blow molding stage. After the plastic bottle 8 is ejected from the mold and retracted into position, the core rotation drive mechanism drives the injection blow molding core 7 to rotate back into position. At the same time, the blow molding half 61 opens under the action of the blow molding half opening and closing cylinder 60, and the plastic bottle 8 falls under the action of gravity or is taken out by a robot arm. Meanwhile, the in-mold labeling robot arm 9 can place the label 99 in the blow molding cavity. After completion, the moving mold moves forward to close the mold, the injection molding half 51 closes under the action of the injection molding opening and closing inclined pin 53, and the blow molding half 61 closes under the action of the blow molding closing inclined pin 63. The mold is closed in place, and the next cycle continues. This cycle repeats.

[0039] In summary, the above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent variations and modifications made to the shape, structure, features and spirit described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A core-rotary injection blow molding apparatus, comprising: A fixed mold base and a moving mold base are arranged opposite to each other. The moving mold base has at least two guide pillars facing the fixed mold base. The fixed mold base has guide pillar holes corresponding to the guide pillars. At least one injection mold and a corresponding blow mold are arranged parallel to each other on the fixed mold base. The injection mold has several injection cavities, and the blow mold has blow cavities corresponding to the injection cavities. A core rotation shaft and a core return mechanism for driving the core rotation shaft are movably arranged in the moving mold base. The rotary drive mechanism includes a core rotating shaft with a core rotating seat. On both sides of the core rotating shaft are injection blow molding core assemblies corresponding to the corresponding injection mold or blow mold. Each injection blow molding core assembly includes injection blow molding cores that correspond one-to-one with the injection cavity in the injection mold or the blow cavity in the blow mold. The injection mold and the corresponding blow mold are symmetrically arranged on both sides of the core rotating shaft. The injection cavity in the injection mold and the blow cavity in the blow mold correspond to the corresponding injection blow molding core. The guide... A split base plate is slidably mounted on the column. A split base plate drive mechanism is provided on the fixed mold base and / or the moving mold base. The split base plate is provided with a bottle neck injection mold corresponding to the injection mold, and a bottle neck / shoulder blow mold corresponding to the blow mold. The bottle neck injection mold includes a pair of injection split parts, each with a bottle neck injection half-cavity corresponding to a one-to-one injection cavity in the injection mold. The bottle neck / shoulder blow mold includes a pair of blow molded split parts, each with a bottle neck / shoulder corresponding to a blow mold cavity in the blow mold. The blow-molded half cavity; an injection molding half opening and closing drive device for driving the opening and closing of the pair of injection molding half parts is provided between the pair of injection molding half parts or between the pair of injection molding half parts and the injection mold; a blow molding half opening and closing drive device for driving the opening and closing of the pair of blow-molded half parts is provided between the pair of blow-molded half parts or between the pair of blow-molded half parts and the blow mold; a hot runner communicating with all injection cavities in the injection mold is provided on the fixed mold base; a blow molding mechanism is provided in the injection blow core and the core rotary seat.

2. The core rotary injection blow molding device according to claim 1, characterized in that, A positioning locking mechanism is also provided between the moving mold base and the core rotary base.

3. The core rotary injection blow molding device according to claim 2, characterized in that, The positioning locking mechanism includes: a positioning locking cylinder disposed on the moving mold base, and a pair of positioning locking holes corresponding to the piston rod of the positioning locking cylinder are provided on the core rotary seat.

4. The core rotary injection blow molding device according to claim 1, characterized in that, The core rotation drive mechanism includes: a rotary gear mounted on the core rotation shaft and a linear power unit mounted on the moving mold base. The drive rod of the linear power drive unit is provided with a rotary rack that meshes with the rotary gear.

5. The core rotary injection blow molding device according to claim 1, characterized in that, An injection molding half-part opening and closing drive device is provided between the pair of injection molding half-parts for driving the opening and closing of the pair of injection molding half-parts. The specific structure of the injection molding half-part opening and closing drive device includes: an injection molding half-part opening and closing cylinder provided on the outer injection molding half-part, and a through hole corresponding to the piston rod of the injection molding half-part opening and closing cylinder provided on the outer injection molding half-part. The piston rod of the injection molding half-part opening and closing cylinder passes through the through hole on the outer injection molding half-part and is connected to the inner injection molding half-part.

6. The core rotary injection blow molding apparatus according to claim 1, characterized in that, An injection molding half-part opening and closing drive device is provided between the pair of injection molding half-parts and the injection mold for driving the opening and closing of the pair of injection molding half-parts. The specific configuration of the injection molding half-part opening and closing drive device is as follows: injection molding opening and closing inclined pins that open outward are respectively provided on both sides of the injection mold facing the moving mold base. An injection molding guide inclined groove is provided on the injection molding half-parts, which corresponds to the injection molding opening and closing inclined pins on the corresponding sides of the injection mold. The injection molding opening and closing inclined pins are slidably disposed in the injection molding guide inclined grooves on the corresponding injection molding half-parts.

7. The core rotary injection blow molding device according to claim 1, characterized in that, The specific structure of the blow molding half opening and closing drive device includes: a blow molding half opening and closing cylinder disposed on the outer blow molding half part, the outer blow molding half part having a through hole corresponding to the piston rod of the blow molding half opening and closing cylinder, the piston rod of the blow molding half opening and closing cylinder passing through the through hole on the outer blow molding half part and connected to the inner blow molding half part.

8. A core-rotary injection blow molding apparatus according to claim 7, characterized in that, The blow molding mold is provided with a blow molding mold closing drive device that cooperates with a pair of blow molding half parts. The specific arrangement of the blow molding mold closing drive device is as follows: the two sides of the blow molding mold facing the moving mold base are respectively provided with blow molding mold closing inclined pins that open outwards, and the pair of blow molding half parts are located between the blow molding mold closing inclined pins on both sides of the blow molding mold.

9. A core-rotary injection blow molding apparatus according to claim 1, characterized in that, The blow molding mold is an assembled structure, comprising: two blow molding half-molds, and a blow molding cavity bottom disposed between the bottoms of the two blow molding half-molds.

10. A core-rotary injection blow molding apparatus according to any one of claims 1 to 9, characterized in that, The guide pin hole of the fixed mold base is provided with a guide sleeve corresponding to the guide pin.

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