Rotary injection-blow molding all-in-one machine

Abstract

The utility model discloses a rotary injection and blow molding all-in-one machine which comprises a rack, the injection mold is connected to the rack, and a plurality of injection cavities are formed in one side of the injection mold; the middle core mechanism comprises a middle sliding frame and an injection blowing device, the middle sliding frame can move left and right on the rack, the injection blowing device is rotationally connected into the middle sliding frame, the injection blowing device right faces the injection molding cavities, the positions, right facing the multiple injection molding cavities, of the two sides of the injection blowing device are each provided with an injection core head, and air blowing openings and injection molding openings are formed in the multiple injection core heads; the blow molding mechanism comprises a side sliding frame and a blow molding die, the side sliding frame is located on the side, away from the injection molding die, of the sliding frame, the blow molding die is connected to the side sliding frame, and forming cavities are formed in the multiple injection molding die positions on the side, right opposite to the injection and blow molding device, of the blow molding die respectively. And the structure for transferring and conveying the semi-finished products among different procedures is reduced, the space volume occupied by the whole equipment is reduced, and the whole production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a plastic processing equipment, and more particularly to a rotary injection blow molding machine. Background Technology

[0002] Currently, in the production and processing of plastic products, such as blow molding, injection molding and blow molding are required. These two processes can be handled by a conveyor line that transfers multiple preforms, allowing them to pass through injection molding and blow molding equipment respectively. Alternatively, multiple preforms can be injection molded into multiple preforms on the injection molding equipment first, and then the entire assembly can be transferred to blow molding equipment for blow molding. It is evident that current injection molding and blow molding processes for plastics require a large number of devices, resulting in a large overall equipment volume. Therefore, there is an urgent need for a more compact plastic processing equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a rotary injection blow molding machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A rotary injection blow molding machine includes: a frame; an injection mold connected to the frame, with multiple injection cavities on one side of the injection mold; a core mechanism including a central slide and an injection blow device, the central slide being movable left and right on the frame, the injection blow device being rotatably connected to the central slide along an axis arranged in the front-back direction, the injection blow device being directly opposite the injection cavities, and core heads being respectively arranged on both sides of the injection blow device at positions directly opposite the multiple injection cavities, each of the multiple core heads forming an air blowing port and an injection port; and a blow molding mechanism including a side slide and a blow mold, the side slide being movable left and right on the frame, the side slide being located on the side of the slide away from the injection mold, the blow mold being connected to the side slide, and the blow mold having molding cavities respectively arranged at multiple injection mold positions on the side facing the injection blow device.

[0006] This technical solution has at least the following beneficial effects: When injection molding and blow molding production are required, the middle slide moves closer to the injection mold, causing the injection blow device to move closer to the injection mold. Multiple injection nozzles on the side of the injection blow device facing the injection mold are inserted into the corresponding injection cavities. Meanwhile, the side slide moves closer to the middle slide, causing the injection blow device and the blow mold to move closer to each other. Multiple injection nozzles on the side of the injection blow device facing the blow mold are also inserted into the corresponding molding cavities. Injection molding is then performed in the injection mold, and blow molding is performed in the blow mold. Specifically, for the injection cavity, injection molding can be performed through the injection port using injection nozzles that extend into it. After completion, a preform is obtained. Then, the injection mold and blow mold move away from the injection blow device for mold separation. The preform obtained from injection molding exits the injection cavity. Next, the injection blow device rotates, causing the positions of the injection nozzles on both sides to interchange. Then, the injection mold... The blow mold moves relative to the blow molding device and approaches both sides. At this time, the injection head with the preform enters the molding cavity. Multiple injection heads extending into the cavity blow mold the preform through the air outlet. Simultaneously, injection molding is also performed in the injection cavity through the injection heads extending into the cavity. After completion, the product is blow molded from the injection head in the molding cavity, and the preform is injection molded from the injection head in the injection cavity. The injection mold and blow mold are moved away from the injection molding device to separate the mold. The preform obtained from injection molding exits the injection cavity, and the product obtained from blow molding also exits the molding cavity and falls off the injection molding device. The above steps are repeated. In this way, injection molding and blow molding can be completed in the same machine, and the structure for transferring and conveying semi-finished products between different processes is reduced, the overall space occupied by the equipment is reduced, and the overall production efficiency is improved.

[0007] As a further improvement to the above technical solution, this utility model also includes a feeding mechanism, which includes a feeding cylinder, a first motor, a conveying screw, and a discharge pipe. The feeding cylinder and the first motor are connected to the frame. One end of the feeding cylinder is connected to multiple injection cavities. The conveying screw is rotatably connected inside the feeding cylinder. The first motor is located at the other end of the feeding cylinder and drives the conveying screw. The discharge pipe is connected to the top side of the end of the feeding cylinder away from the injection mold. Injection molding material is fed into the feeding cylinder through the discharge pipe. The first motor drives the conveying screw to rotate inside the feeding cylinder, thereby spirally conveying the material to the injection mold within the feeding cylinder. This allows for direct configuration of the material feeding structure within the same machine, making the entire machine more convenient to use.

[0008] As a further improvement to the above technical solution, a second motor is connected to the middle slide, and connecting shafts are respectively connected to the front and rear sides of the injection blowing device. The two connecting shafts are rotatably connected within the middle slide, and the second motor drives one of the connecting shafts. A second motor that drives the injection blowing device to rotate is provided on the middle slide. The injection blowing device is connected to connecting shafts on its front and rear sides, and is rotatably connected within the middle slide via two connecting shafts, thus achieving rotatable installation within the middle slide. The second motor then drives one of the connecting shafts, thereby causing the entire injection blowing device to rotate within the middle slide.

[0009] As a further improvement to the above technical solution, the blow molding mechanism includes a base frame and a translation drive component. The base frame is connected to the translation drive component, and the translation drive component is connected to the base frame. The translation drive component drives the side slide, which can move left and right. The base frame provides a mounting support position for the translation drive component, fixing the translation drive component to the base frame. The translation drive component provides a sliding driving force to the side slide, causing the side slide to move in the left and right direction, thereby moving closer to or further away from the injection mold.

[0010] As a further improvement to the above technical solution, multiple guide pillars are connected between the base frame and the injection mold, and the side slide and the middle slide are slidably connected to the multiple guide pillars respectively. With multiple guide pillars connecting the two relatively fixed base frames and the injection mold, and these guide pillars passing through the side slide and the middle slide, the position of the side slide and the middle slide can be further defined by the multiple guide pillars when they slide in the left-right direction. This helps to ensure the relative positional stability between the injection mold, the blow mold, and the injection blow molding device, thereby allowing the core injection heads on both sides of the injection blow molding device to enter the injection cavity and the molding cavity located on both sides of the injection blow molding device, respectively.

[0011] As a further improvement to the above technical solution, the core mechanism also includes a transmission assembly, which includes a fixed rack, a transmission gear, and a movable rack. The fixed rack is connected to the injection mold, the transmission gear is rotatably connected to the middle slide, and the movable rack is connected to the side slide. The fixed rack and the movable rack are respectively meshed on the upper and lower sides of the transmission gear. When the side slide moves left and right, the side slide transmits power to the transmission gear through the movable rack, causing the transmission gear to rotate. Since the transmission gear and the fixed rack mesh with each other, the middle slide itself is slidably connected to the frame, while the fixed rack is fixed to the injection mold relative to the frame. This allows the middle slide to be driven to move in the left and right directions. In this way, the power of the side slide during sliding can be converted into the power of the middle slide during sliding, saving the power source for driving the middle slide, thereby simplifying the overall structure and saving overall space.

[0012] As a further improvement to the above technical solution, the transmission components are respectively provided on the front and rear sides of the middle slide. Power is transmitted to the middle slide through the transmission components on the front and rear sides, so that the force on the injection blow molding device is more even during movement, thereby improving the mold closing effect with the injection mold and blow mold.

[0013] As a further improvement to the above technical solution, a receiving box is provided inside the frame, and the receiving box is located directly below the injection mold and the blow molding device. After the injection head blow molds the preform in the molding cavity, it separates the injection mold and the blow mold relative to each other from the blow molding device. The preform obtained by injection molding exits the injection cavity, and the product obtained by blow molding also exits the molding cavity and falls off the blow molding device.

[0014] As a further improvement to the above technical solution, a support frame is slidably connected to the bottom side of the frame in the front-to-back direction, and the receiving bin is located on the top side of the support frame. When it is necessary to recycle the products collected in the receiving bin, or when it is necessary to replace the receiving bin, the support frame can be moved out of the frame, which facilitates the operation of the receiving bin and improves the ease of use.

[0015] As a further improvement to the above technical solution, a gantry frame is connected to the frame, and the injection mold is detachably connected to the gantry frame. Using the gantry frame to fix the injection mold provides connection and fixing points at multiple locations, thereby improving the stability of the injection mold installation. When maintenance or replacement of the injection mold is required, it can be removed from the gantry frame, improving the convenience of later use and maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is an overall front view of the present invention.

[0018] Figure 2 This is a perspective view of the injection mold, injection blowing device, and blow molding mold after parting.

[0019] Figure 3 This is a front view of the rotating mold of this utility model.

[0020] Figure 4 yes Figure 3 A schematic diagram of the AA cross-sectional structure.

[0021] Figure 5 yes Figure 4A magnified schematic diagram of part B.

[0022] In the attached diagram: 100-Frame, 110-Receiving bin, 120-Gantry, 200-Injection mold, 210-Injection cavity, 300-Middle slide, 310-Second motor, 320-Fixed rack, 330-Transmission gear, 340-Modible rack, 400-Injection blow molding device, 4100-Rotary mold, 4110-Core seat, 4111-Core block, 4112-Ejector column, 4113-Guide groove, 4120-Modible plate, 4121- First slide bar, 4122-Second slide bar, 4200-Modular mold, 4300-Injection head, 4310-Injection sleeve, 4320-Air blower, 4321-Air inlet, 4330-Injection cylinder, 4331-Conical section, 4332-Injection port, 510-Side slide, 520-Blow mold, 530-Base frame, 540-Translation drive component, 550-Guide post, 610-Material conveyor, 620-First motor, 630-Discharge tube. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figure 1A rotary injection blow molding machine includes a frame 100, an injection mold 200, a core mechanism, and a blow molding mechanism. The injection mold 200 is connected to the frame 100, and one side of the injection mold 200 has multiple injection cavities 210. The core mechanism includes a central slide 300 and an injection blow device 400. The central slide 300 can move left and right on the frame 100. The injection blow device 400 is rotatably connected to the central slide 300 along an axis arranged in the front-back direction. The injection blow device 400 is directly opposite the injection cavities 210, and its two sides are directly opposite each other. Injection heads 4300 are respectively provided at the positions of the plurality of injection cavities 210, and each of the plurality of injection heads 4300 has an air blowing port 4321 and an injection port 4332. The blow molding mechanism includes a side slide 510 and a blow mold 520. The side slide 510 can move left and right on the frame 100. The side slide 510 is located on the side of the slide away from the injection mold 200. The blow mold 520 is connected to the side slide 510. On the side of the blow mold 520 facing the injection blow device 400, the plurality of injection molds 200 are respectively provided with molding cavities.

[0028] As described above, when injection molding and blow molding are required, the middle slide 300 moves closer to the injection mold 200, causing the injection blow device 400 to move closer to the injection mold 200. Multiple injection nozzles 4300 on the side of the injection blow device 400 facing the injection mold 200 are inserted into the corresponding injection cavities 210. Meanwhile, the side slide 510 moves closer to the middle slide 300, causing the injection blow device 400 and the blow mold 520 to move closer together. The multiple injection nozzles 4300 on the side of the injection blow device 400 facing the blow mold 520 are also respectively positioned opposite each other. The preform is inserted into the corresponding molding cavity, and then injection molding is performed in the injection mold 200, followed by blow molding in the blow mold 520. Specifically, for the injection cavity 210, injection molding is performed through the injection port 4332 via the core head 4300 extending inside it. After completion, a preform is obtained. Then, the injection mold 200 and the blow mold 520 are moved away from the injection blow device 400 for mold separation. The preform obtained from injection molding exits the injection cavity 210. Then, the injection blow device 400 rotates, causing the core heads 4300 on both sides to be positioned... The positions are interchanged, and the injection mold 200 and blow mold 520 are moved relative to each other and closer to the sides of the injection blow device 400. At this time, the injection head 4300 with the preform enters the molding cavity. The preform can be blow molded from the air outlet 4321 through multiple injection heads 4300 extending into it. At the same time, injection molding is also performed in the injection cavity 210 through the injection heads 4300 extending into it. After completion, the product is blow molded from the injection heads 4300 in the molding cavity. Bottle preforms are injection molded on head 4300. The injection mold 200 and blow mold 520 are moved away from the injection blow device 400 to separate the molds. The preforms obtained by injection molding exit the injection cavity 210, and the products obtained by blow molding also exit the molding cavity and fall off the injection blow device 400. The above steps are repeated. In this way, injection molding and blow molding can be completed in the same equipment, and the structure for transferring and conveying semi-finished products between different processes is reduced, the overall space occupied by the equipment is reduced, and the overall production efficiency is improved.

[0029] In practical applications, such as Figure 2 and Figure 3As shown, the rotary mold 4100 has two movable molds 4200 that can be opened and closed on both sides. Each of the two movable molds 4200 has a clamping space that can be opened and closed in the front-to-back direction. Each of the movable molds 4200 has multiple clamping spaces spaced at intervals in the up-down direction. The rotary mold 4100 has multiple core injection heads 4300. The multiple core injection heads 4300 are respectively facing the multiple clamping spaces. The multiple core injection heads 4300 pass through the multiple clamping spaces on both sides and form an air blowing port 4321 and an injection port 4332. Before operation, the multiple clamping spaces within the movable molds 4200 on both sides of the rotary mold 4100 are in an open state. During operation, the injection mold 200 and the blow mold 520 move relative to each other and approach the sides of the rotary mold 4100. At this time, the multiple clamping spaces within the movable molds 4200 on both sides of the rotary mold 4100 gradually close towards the core injection head 4300 located inside them, so that the movable molds 4200 on both sides and the multiple core injection heads 4300 connected to the movable molds 4200 respectively close the multiple injection cavities 210 and the molding cavity facing each other. When the mold is separated, the preform obtained by injection molding exits the injection cavity 210, and the product obtained by blow molding also exits the molding cavity. The clamping space on the side of the molded product opens, allowing the molded product to fall off.

[0030] This utility model also includes a feeding mechanism, which comprises a feeding cylinder 610, a first motor 620, a conveying screw, and a discharge pipe 630. The feeding cylinder 610 and the first motor 620 are connected to the frame 100. One end of the feeding cylinder 610 is connected to multiple injection cavities 210. The conveying screw is rotatably connected inside the feeding cylinder 610. The first motor 620 is located at the other end of the feeding cylinder 610 and drives the conveying screw. The discharge pipe 630 is connected to the top side of the end of the feeding cylinder 610 away from the injection mold 200. Injection molding material is fed into the feeding cylinder 610 through the discharge pipe 630. The first motor 620 drives the conveying screw to rotate inside the feeding cylinder 610, thereby spirally conveying the material from the feeding cylinder 610 to the injection mold 200. The structure for feeding injection molding material is configured directly in the same machine, making the whole machine more convenient to use. In practical applications, a heating source is provided on the conveying screw. At this time, the injection molding material input into the downward feed tube 630 can be plastic granules. The plastic granules are heated and conveyed in the feed cylinder 610.

[0031] After the blow molding process produces the product, the blow mold 520 and the rotary mold 4100 move away from each other, causing the multiple injection heads 4300 to exit the molding cavity. Then, the movable mold 4200 opens multiple clamping spaces. At this time, the product formed on the injection head 4300 can fall off the injection head 4300 under the action of gravity. In order to ensure that all formed products can fall off the injection head 4300, in this embodiment, the rotary mold 4100 includes a core seat 4110 and movable plates 4120 connected to the left and right sides of the core seat 4110. The two movable plates 4120 can move in the left and right directions on both sides of the core seat 4110. The two movable molds 4200 are respectively connected to the side of the two movable plates 4120 that are far apart from each other. The multiple injection heads 4300 are respectively connected to the left and right sides of the core seat 4110. In practical applications, there are various structural forms for the left and right movement of the movable plate 4120. A translation drive source can be directly configured inside the core seat 4110 to drive the movable plate 4120 and move it left and right. Alternatively, a translation drive source can be installed outside the core seat 4110 and then connected to the movable plate 4120 to move it left and right. The main function of the translation drive source is to provide driving force for movement in the left and right direction. There are various structural forms, such as electric push rods, cylinders, or hydraulic cylinders. In order to further improve the stability of the movement of the movable plate 4120, the movable plate 4120 can be slidably connected inside the core seat 4110. After the product is formed, the core holder 4110 and the blow mold 520 move away from each other to achieve mold separation. The formed product leaves the molding cavity, and multiple clamping spaces in the movable mold 4200 open. At this time, the movable plate 4120 moves away from the core holder 4110, causing the opened movable mold 4200 to move to the right. If there is still product on the injection head 4300 that has not fallen off, the movable mold 4200 will push the product out of the injection head 4300. Then the movable plate 4120 moves back to the direction closer to the core holder 4110 to reset. This can effectively ensure that the product can completely fall off the injection head 4300 after each mold separation, avoiding the impact on the next processing and further improving the overall processing stability.

[0032] The injection head 4300 can be used for injection molding or air blowing, depending on the specific application. For example, the injection molding tube and the air blowing tube can be directly connected to the injection head 4300. To achieve a more compact overall structure, such as... Figure 4 and Figure 5As shown, in this embodiment, the core injection head 4300 includes a core injection sleeve 4310, an air blower 4320, and a core injection cylinder 4330. One end of the core injection sleeve 4310 is connected to the core seat 4110. The air blower 4320 is connected to the other end of the core injection sleeve 4310 and extends out of the clamping space. The end of the air blower 4320 extending out of the clamping space forms the air blowing port 4321. The core injection cylinder 4330 passes through the air blowing port 4321 from the end of the air blower 4320 connected to the core seat 4110. The core injection cylinder 4330 extends to the end of the air blower 4320 to form the injection port 4332. The core injection sleeve 4310, the air blowing cylinder 4320, and the core injection cylinder 4330 are all hollow structures. In practical applications, an air inlet hole that communicates with the inside of the air blowing cylinder 4320 can be opened on the outside of the core injection sleeve 4310. At this time, an air intake channel that communicates with the air inlet hole needs to be opened in the core seat 4110. Alternatively, an air inlet hole can be opened directly on the outside of the air blowing cylinder 4320. Since the end of the core injection cylinder 4330 is located outside the core injection sleeve 4310, a feeding channel that communicates with the core injection cylinder 4330 can be opened directly in the core seat 4110.

[0033] In the core injection head 4300 of this embodiment, when injection molding is required, material is input from the end of the core injection cylinder 4330 connected to the core seat 4110. The material is injected into the injection cavity 210 through the core injection cylinder 4330 to achieve injection molding. When blow molding is required, gas is introduced into the core injection sleeve 4310. At this time, the gap between the air blower 4320 and the core injection cylinder 4330 allows airflow to pass through. Finally, the preform is blow molded from the air blower port 4321 formed at the end of the air blower 4320. Thus, the core injection head 4300 can be used for injection molding or blow molding as needed.

[0034] Since the end of the air-blowing cylinder 4320 away from the core seat 4110 protrudes beyond the core-injection sleeve 4310, that is, the air-blowing port 4321 is an exposed design, when the core-injection head 4300 needs to be injection molded, the material can easily enter the air-blowing cylinder 4320 from the air-blowing port 4321, blocking the air-blowing port 4321 and affecting the subsequent air-blowing process. Therefore, in this embodiment, a core block 4111 that can move left and right is provided in the core seat 4110, and multiple core-injection cylinders 4330 are respectively connected to the left and right sides of the core block 4111. A tapered section 4331 is formed on the outer side of the end of the core cylinder 4330 away from the core block 4111. The outer diameter of the tapered section 4331 gradually increases in the direction away from the core block 4111. When the core block 4111 moves to any side, the multiple tapered sections 4331 on the other side block the air-blowing port 4321 that it passes through. In practical applications, the inner side of the end of the air blowing cylinder 4320 near the conical section 4331 can also be a conical structure, and its shape is adapted to the conical section 4331. Thus, when the conical section 4331 blocks the air blowing port 4321, the conical structure at the end of the air blowing cylinder 4320 can cooperate with the conical structure at the end of the conical section 4331 to improve the blocking effect on the air blowing port 4321. Since the core injection cylinder 4330 is connected to the core block 4111, a feeding channel can be provided in the core block 4111. At this time, the core block 4111 can be used to feed material into the core injection cylinder 4330.

[0035] In the core holder 4110 with core block 4111, when the injection mold 200 and blow mold 520 approach the rotary mold 4100, the core block 4111 drives the core cylinders 4330 connected on both sides to move left or right. This causes the conical section 4331 of the core cylinder 4330 located in the injection cavity 210 to block the air outlet 4321, while the conical section 4331 of the core cylinder 4330 located in the blow cavity opens the air outlet 4321. Within the injection cavity 210, due to the conical section 4331 blocking the air outlet 4321... When the air inlet 4321 is blocked, the material will not flow into the air inlet 4321 and block it when the core injection cylinder 4330 injects material into the injection cavity 210. Inside the blow molding cavity, the conical section 4331 opens the air inlet 4321, allowing the preform to be stably blow molded through the air inlet 4321. Thus, the air inlet 4321 can be opened or closed according to processing and usage needs, effectively preventing material from blocking the air inlet 4321 during the injection molding process, and greatly improving the stability of the core injection head 4300 during use.

[0036] For the movement of the core block 4111 within the core seat 4110, a drive source for moving the core block 4111 left and right can be directly configured within the core seat 4110, such as an electric screw, cylinder, or hydraulic cylinder. However, to simplify the structure, the relative movement of the injection mold 200, the blow mold 520, and the rotary mold 4100 can be used to drive the movement of the core block 4111. Specifically, the two ends of the core block 4111 are respectively connected to top posts 4112, and the two top posts 4112 protrude from the movable molds 4200 on both sides. When the injection mold 200 approaches the rotary mold 4100, the injection mold 200 presses against the top post 4112 directly opposite it. When the injection mold 200 and the blow mold 520 are relatively close to the rotary mold 4100, the injection mold 200 pushes the core block 4111 within the core seat 4110 by pressing against the ejector pin 4112. The ejector pin 4112 on the side opposite the blow mold 520 also protrudes further from the blow mold 520 under the action of the core block 4111. In this way, the mold closing action of the injection mold 200, the blow mold 520 and the rotary mold 4100 can be used to directly drive the movement of the core injection cylinder 4330 inside the core injection head 4300, realizing the function switching of the core injection head 4300 for injection molding or blow molding without the need for a separate drive source, making the overall structure simpler. In addition, in order to improve the stability of the core block 4111 in the core seat 4110, a sliding connection structure can be provided between the core block 4111 and the core seat 4110. For example, one of the slide rails or slide grooves can be provided on the core block 4111, and the other of the slide rails or slide grooves can be provided on the inner side of the core seat 4110. Through the cooperation of the slide rails and slide grooves, the core block 4111 can drive the multiple core injection cylinders 4330 to move stably.

[0037] When the clamping space within the movable mold 4200 needs to be opened and closed, a driving structure can be provided within the movable mold 4200 to open or close the clamping space. To reduce the driving source, a transmission structure can be provided between the movable mold 4200 and the core seat 4110, thereby converting the force of the movable mold 4200 and the core seat 4110 approaching each other into the force to move the movable mold 4200. Specifically, the transmission structure includes guide grooves 4113 formed on the front and rear sides of the core seat 4110, and a first slide rod 4121 and a second slide rod 4122 slidably connected to the movable mold 4200 plate in the front-rear direction. Guide sections are formed in the two guide grooves 4113, and both guide sections are inclined towards the core seat 4110. The movable mold 4200... The injection mold 200 includes a front mold connected to the first slide bar 4121 and a rear mold connected to the second slide bar 4122. The clamping space is formed between the front mold and the rear mold. A front bearing is connected to the front mold located on the front side, and a rear bearing is connected to the rear mold located on the rear side. The front bearing and the rear bearing can respectively enter the two guide grooves 4113. An ejector is provided on the injection mold 200. When the injection mold 200 approaches the rotary mold 4100, the ejector presses the movable plate 4120 facing it against the core seat 4110. A transmission member is provided on the blow mold 520. The blow mold 520 can drive the movable plate 4120 facing it to move closer to or away from the core seat 4110 through the transmission member. In practical applications, the guide groove 4113 includes a first straight section, a guide section, and a second straight section connected in sequence. The first straight section passes through the end of the guide rod near the movable mold 4200. Both the first and second straight sections extend in the left-right direction. The first straight section can improve the stability of the front and rear bearings entering the guide groove 4113. Then, the guide section guides the front and rear bearings. Finally, the third straight section stabilizes the position of the guided movement of the front and rear bearings. In addition, when there is only one movable mold 4200, the front bearing is connected to the front side of the front mold of the movable mold 4200, and the rear bearing is connected to the rear side of the rear mold of the movable mold 4200. When there are multiple movable molds 4200 arranged in the front-back direction, the front bearing is connected to the front side of the front mold of the movable mold 4200 located at the frontmost side, and the rear bearing is connected to the rear side of the rear mold of the movable mold 4200 located at the backmost side.

[0038] To enable the injection blowing device 400 to rotate within the middle slide 300, in this embodiment, a second motor 310 is connected to the middle slide 300. Connecting shafts are connected to the front and rear sides of the injection blowing device 400, and the two connecting shafts are rotatably connected within the middle slide 300. The second motor 310 drives one of the connecting shafts. The second motor 310 drives one of the connecting shafts on the middle slide 300, allowing the injection blowing device 400 to rotate within the middle slide 300. The second motor 310 then drives one of the connecting shafts, thereby causing the entire injection blowing device 400 to rotate within the middle slide 300.

[0039] To enable the side slide to move left and right on the frame 100, in this embodiment, the blow molding mechanism includes a base frame 530 and a translation drive component 540. The base frame 530 is connected to the translation drive component 540, and the translation drive component 540 is also connected to the base frame 530. The translation drive component 540 drives the side slide 510, allowing it to move left and right. The translation drive component 540 mainly provides the driving force for linear reciprocating motion and can have various structural forms, such as a cylinder, hydraulic cylinder, or electric lead screw. The base frame 530 provides a mounting support position for the translation drive component 540, fixing the translation drive component 540 to the base frame 530. The translation drive component 540 provides the sliding driving force to the side slide 510, causing it to move left and right, thereby moving closer to or further away from the injection mold 200.

[0040] To further improve the stability of the injection blow molding device 400, injection mold 200, and blow mold 520 during relative movement, in this embodiment, multiple guide pillars 550 are connected between the base frame 530 and the injection mold 200. The side slide 510 and the middle slide 300 are slidably connected to the multiple guide pillars 550 respectively. With multiple guide pillars 550 connecting the base frame 530 (fixed to two opposing frames 100) and the injection mold 200, and the guide pillars 550 passing through the side slide 510 and the middle slide 300, the multiple guide pillars 550 further limit their position when the side slide 510 and the middle slide 300 slide in the left-right direction. This helps to ensure the relative positional stability between the injection mold 200, blow mold 520, and injection blow molding device 400, thereby allowing the core injection heads 4300 on both sides of the injection blow molding device 400 to enter the injection cavity 210 and the molding cavity located on both sides of the injection blow molding device 400 respectively.

[0041] There are several ways to move the middle slide 300 left and right on the frame 100. For example, a drive source can be set inside the frame 100 to directly provide a driving force to the middle slide 300 to move in the left and right direction. In this embodiment, the core mechanism also includes a transmission assembly, which includes a fixed rack 320, a transmission gear 330 and a movable rack 340. The fixed rack 320 is connected to the injection mold 200, the transmission gear 330 is rotatably connected to the middle slide 300, and the movable rack 340 is connected to the side slide 510. The fixed rack 320 and the movable rack 340 are respectively meshed on the upper and lower sides of the transmission gear 330. When the side slide 510 moves left and right, the side slide 510 transmits power to the transmission gear 330 through the movable rack 340, causing the transmission gear 330 to rotate. Since the transmission gear 330 and the fixed rack 320 mesh with each other, the middle slide 300 itself is slidably connected to the frame 100, while the fixed rack 320 is fixed relative to the frame 100 on the injection mold 200. This allows the middle slide 300 to be driven to move in the left and right directions. In this way, the power of the side slide 510 when sliding can be converted into the power of the middle slide 300 when sliding, saving the power source for driving the middle slide 300, thereby simplifying the overall structure and saving more overall space.

[0042] Furthermore, the transmission components are respectively provided on the front and rear sides of the middle slide 300. Power is transmitted to the middle slide 300 through the transmission components on the front and rear sides, so that the injection blow molding device 400 is subjected to more even force when it moves, thereby improving the mold closing effect with the injection mold 200 and the blow mold 520.

[0043] In some embodiments, a receiving box 110 is provided inside the frame 100, and the receiving box 110 is located directly below the injection mold 200 and the injection blow molding device 400. After the injection head 4300 blow molds the preform in the molding cavity, it separates the injection mold 200 and the blow mold 520 relative to each other from the injection blow molding device 400. The preform obtained by injection molding exits the injection cavity 210, and the product obtained by blow molding also exits the molding cavity and falls off the injection blow molding device 400.

[0044] Furthermore, a support frame is slidably connected to the bottom side of the frame 100 in the front-to-back direction, and the receiving bin 110 is located on the top side of the support frame. When it is necessary to recycle the products collected in the receiving bin 110, or when it is necessary to replace the receiving bin 110, the support frame can be removed from the frame 100, which facilitates the operation of the receiving bin 110 and improves ease of use.

[0045] The injection mold 200 can be directly mounted and fixed on the frame 100. However, in this embodiment, a gantry frame 120 is connected to the frame 100, and the injection mold 200 is detachably connected to the gantry frame 120. Using the gantry frame 120 to fix the injection mold 200 provides connection and fixing points at multiple locations, thereby improving the stability of the injection mold 200 installation. When maintenance or replacement of the injection mold 200 is required, it can be removed from the gantry frame 120, improving the convenience of later use and maintenance.

[0046] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A rotary injection blow molding machine, characterized in that: include: Rack (100); An injection mold (200) is connected to the frame (100), and a plurality of injection cavities (210) are provided on one side of the injection mold (200). The core mechanism includes a central slide (300) and an injection blow molding device (400). The central slide (300) can move left and right on the frame (100). The injection blow molding device (400) is rotatably connected to the central slide (300) along an axis set in the front-back direction. The injection blow molding device (400) is directly opposite the injection cavity (210). On both sides of the injection blow molding device (400), in the positions directly opposite the multiple injection cavities (210), core injection heads (4300) are respectively provided. Each of the multiple core injection heads (4300) has an air blowing port (4321) and an injection port (4332). The blow molding mechanism includes a side slide (510) and a blow mold (520). The side slide (510) can move left and right on the frame (100). The side slide (510) is located on the side of the slide away from the injection mold (200). The blow mold (520) is connected to the side slide (510). The blow mold (520) has molding cavities respectively provided at multiple positions of the injection mold (200) on the side facing the blow molding device (400). The feeding mechanism includes a feeding cylinder (610), a first motor (620), a conveying screw, and a discharge pipe (630). The feeding cylinder (610) and the first motor (620) are connected to the frame (100). One end of the feeding cylinder (610) is connected to a plurality of injection cavities (210). The conveying screw is rotatably connected inside the feeding cylinder (610). The first motor (620) is located at the other end of the feeding cylinder (610) and drives the conveying screw. The discharge pipe (630) is connected to the top side of the end of the feeding cylinder (610) away from the injection mold (200). A heating source is provided on the conveying screw.

2. The rotary injection blow molding machine according to claim 1, characterized in that: A second motor (310) is connected to the middle slide (300), and connecting shafts are connected to the front and rear sides of the injection device (400). The two connecting shafts are rotatably connected to the middle slide (300), and the second motor (310) drives one of the connecting shafts.

3. The rotary injection blow molding machine according to claim 1, characterized in that: The blow molding mechanism includes a base frame (530) and a translation drive (540). The base frame (530) is connected to the translation drive (540), and the translation drive (540) is connected to the base frame (530). The translation drive (540) drives the side slide (510) to move left and right.

4. A rotary injection blow molding machine according to claim 3, characterized in that: The base frame (530) is connected to the injection mold (200) by a plurality of guide pillars (550), and the side slide (510) and the middle slide (300) are slidably connected to the plurality of guide pillars (550) respectively.

5. A rotary injection blow molding machine according to claim 3, characterized in that: The core mechanism further includes a transmission assembly, which includes a fixed rack (320), a transmission gear (330), and a movable rack (340). The fixed rack (320) is connected to the injection mold (200), the transmission gear (330) is rotatably connected to the middle slide (300), and the movable rack (340) is connected to the side slide (510). The fixed rack (320) and the movable rack (340) are respectively meshed on the upper and lower sides of the transmission gear (330).

6. A rotary injection blow molding machine according to claim 5, characterized in that: The transmission components are respectively provided on the front and rear sides of the middle slide (300).

7. A rotary injection blow molding machine according to claim 1, characterized in that: The frame (100) is provided with a receiving box (110), which is located directly below the injection mold (200) and the injection blow device (400).

8. A rotary injection blow molding machine according to claim 7, characterized in that: The bottom side of the frame (100) is slidably connected to a support frame in the front-to-back direction, and the receiving box (110) is located on the top side of the support frame.

9. A rotary injection blow molding machine according to claim 1, characterized in that: A gantry (120) is connected to the frame (100), and the injection mold (200) is detachably connected to the gantry (120).

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