Rotary injection-blow mold

Abstract

The utility model discloses a rotary injection-blow mold which comprises a rotary mold, movable molds capable of being opened and closed are arranged on the two sides of the rotary mold respectively, clamping spaces capable of being opened and closed in the front-back direction are formed in the two movable molds respectively, and a plurality of clamping spaces are arranged in each movable mold at intervals in the up-down direction. A plurality of core injection heads are arranged in the rotating mold, and the plurality of core injection heads respectively penetrate out of the plurality of clamping spaces on the two sides and form an air blowing opening and an injection molding opening; the injection mold can move in the direction close to or away from the rotating mold, and injection cavities are formed in the positions, right opposite to the multiple clamping spaces, of the injection mold correspondingly; the blow molding die can move in the direction close to or away from the rotating die, and the side, right facing the multiple clamping spaces, of the blow molding die is provided with a forming cavity. According to the blow molding device, the space size occupied by the whole device is reduced, the bottle blank transferring time is shortened, and the whole production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to plastic processing equipment, in particular to a rotary injection blow molding mold. Background Art

[0002] In the production of blow bottles, injection molding is required first, and then the injection molded bottle blanks are blow molded to obtain the product. The injection molding process and the blow molding process are usually completed on two devices. In order to realize the automatic completion of injection molding and blow molding, it is also necessary to set a device for transferring the bottle blanks between the injection molding equipment and the blow molding equipment, so as to transfer the injection molded bottle blanks to the blow molding equipment, so as to form a whole production line to realize continuous production. However, the space occupied by the whole production line is large, and a large production site is required, resulting in excessively high production costs. Therefore, there is an urgent need for a plastic processing production mold that occupies a smaller space. Utility Model Content

[0003] The utility model aims to provide a rotary injection blow molding mold to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

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

[0005] A rotary injection-blow molding mold comprises: a rotary mold, with movable molds that can be opened and closed respectively arranged on both sides, and clamping spaces that can be opened and closed along the front-back direction are formed in the two movable molds respectively, and a plurality of the clamping spaces in each movable mold are arranged at intervals along the up-down direction, and a plurality of core injection heads are arranged in the rotary mold, and the plurality of core injection heads respectively pass through the plurality of clamping spaces on both sides and form blowing ports and injection ports; an injection mold that can move in a direction approaching or away from the rotary mold, and injection cavities are respectively arranged at positions of the injection mold facing the plurality of clamping spaces; a blow mold that can move in a direction approaching or away from the rotary mold, and a molding cavity is respectively arranged on one side of the blow mold facing the plurality of clamping spaces.

[0006] The technical solution has at least the following beneficial effects: when in use, the rotary mold is connected to a rotary drive source of an external device, and any two of the injection mold, the rotary mold and the blow mold are connected to a translation drive source of the external device, thereby driving the injection mold and the blow mold to approach or move away from the rotary mold from both sides of the rotary mold. Before working, a plurality of clamping spaces in the movable molds on both sides of the rotary mold are in an open state, and the injection mold and the blow mold are in a state of moving away from the rotary mold. When working, the injection mold and the blow mold move relatively close to both sides of the rotary mold. At this time, the clamping spaces in the movable molds on both sides of the rotary mold are The multiple clamping spaces are gradually closed toward the core injection heads located inside the multiple clamping spaces, so that the movable molds on both sides and the multiple core injection heads connected to the movable molds respectively close the multiple injection cavities and molding cavities facing each other. At this time, for the injection cavity, the core injection heads extending into the interior thereof can be used for injection molding from the injection port. After completion, a bottle blank is obtained. Then, the injection mold and the blow mold are relatively moved away from the rotary mold to perform mold separation. The bottle blank obtained by injection molding exits the injection cavity. Then, the rotary mold is rotated to interchange the positions of the movable molds and the core injection heads on both sides. Then, the injection mold and the blow mold are relatively moved close to the two sides of the rotary mold. The movable molds on both sides of the rotary mold and the multiple core injection heads connected to the movable mold respectively close the multiple injection cavities and molding cavities facing each other. At this time, for the molding cavity, the multiple core injection heads extending into the interior thereof can be used to blow-mold the preform from the blowing port, and for the injection cavity, the core injection heads extending into the interior thereof can also be used for injection molding. After completion, the product is blow-molded out of the core injection heads in the molding cavity, and the preform is injection-molded on the core injection heads in the injection cavity. The injection mold and the blow mold are relatively away from the rotary mold, and the molds are separated. The preform obtained by injection molding exits the injection cavity. The product obtained by blow molding also exits the molding cavity, and the clamping space on the side of the molded product is opened, so that the molded product can fall, and the above steps are repeated. In this way, injection molding and blow molding can be achieved in a complete set of molds at the same time, and the bottle blank obtained by injection molding on one side of the rotary mold is directly turned over to the other side for blow molding, which reduces the structure of long-distance movement between the traditional injection mold and the blow mold, reduces the overall volume, reduces the space volume occupied by the overall equipment, and reduces the time for transferring the bottle blank, greatly improving the overall production efficiency.

[0007] As a further improvement of the above technical solution, the rotating mold includes a core base and movable plates connected to the left and right sides of the core base, the two movable plates can move in the left and right directions on both sides of the core base, the two movable molds are respectively connected to the sides of the two movable plates away from each other, and the multiple core injection heads are respectively connected to the left and right sides of the core base.

[0008] As a further improvement of the above technical solution, the core injection head includes a core injection sleeve, a blow cylinder and a core injection tube, one end of the core injection sleeve is connected to the core seat, the blow cylinder is connected to the other end of the core injection sleeve and extends out of the clamping space, one end of the blow cylinder extending out of the clamping space forms the blow port, the core injection tube penetrates from one end of the blow cylinder connected to the core seat and extends out of the blow port, and the core injection tube extends to one end of the blow cylinder to form the injection port.

[0009] As a further improvement of the above technical solution, a core block that can move left and right is arranged in the core seat, and a plurality of core injection tubes are respectively connected to the left and right sides of the core block. A tapered section is formed on the outer side of the end of the core injection tube away from the core block, and the outer diameter of the tapered section gradually increases in the direction away from the core block. When the core block moves to either side, the plurality of tapered sections located on the other side respectively block the blowing port passing therethrough.

[0010] As a further improvement of the above technical solution, both ends of the core block are connected with top pillars respectively, and the two top pillars protrude from the movable molds on both sides respectively. When the injection mold approaches the rotating mold, the injection mold presses against the top pillars directly opposite to it.

[0011] As a further improvement of the above technical solution, a transmission structure is arranged between the core seat and the movable mold, and the transmission structure includes guide grooves formed on the front and rear sides of the core seat, a first slide bar and a second slide bar slidably connected to the movable template along the front and rear directions, guide sections are respectively formed in the two guide grooves, and the two guide sections are inclined and approached in the direction approaching the core seat, the movable mold includes a front mold connected to the first slide bar, and a rear mold connected to the second slide bar, and the clamping space is formed between the front mold and the rear mold, the front mold located on the front side is connected to a front bearing, and the rear mold located on the rear side is connected to a rear bearing, and the front bearing and the rear bearing can enter the two guide grooves respectively, and a top pressure piece is arranged on the injection mold, and when the injection mold approaches the rotating mold, the top pressure piece presses the movable plate facing it toward the core seat, and a transmission piece is arranged on the blow mold, and the blow mold can drive the movable plate facing it to approach or move away from the core seat through the transmission piece.

[0012] As a further improvement of the above technical solution, the pressing member includes a spring rod connected to the blow mold.

[0013] As a further improvement of the above technical solution, the transmission member includes an elastic rod, and the movable plate is provided with a transmission hole that can be interference-fitted with the elastic rod.

[0014] As a further improvement of the above technical solution, two first sliding bars are arranged at intervals along the up-down direction, and the upper and lower ends of the front mold are respectively connected to the two first sliding bars.

[0015] As a further improvement of the above technical solution, two second sliding bars are arranged at intervals along the up-down direction, and the upper and lower ends of the rear mold are respectively connected to the two second sliding bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the utility model when the injection mold, the blow mold and the rotary mold are separated from each other.

[0018] Figure 2 It is a stereoscopic diagram of the blow molding mold of the utility model.

[0019] Figure 3 It is a stereogram of the injection mold of the utility model.

[0020] Figure 4 It is a front view of the rotary mold of the utility model.

[0021] Figure 5 yes Figure 4 Schematic diagram of the AA cross-section structure.

[0022] Figure 6 yes Figure 5 B is a partial enlarged schematic diagram.

[0023] In the accompanying drawings: 100-rotating mold, 110-core seat, 111-core block, 112-top column, 113-guide groove, 120-movable plate, 121-first slide bar, 122-second slide bar, 123-transmission hole, 200-movable mold, 300-core injection head, 310-core injection sleeve, 320-blow cylinder, 321-blow port, 330-core injection cylinder, 331-conical section, 332-injection port, 400-injection mold, 410-injection cavity, 420-top pressure piece, 500-blow mold, 510-molding cavity, 520-transmission member. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 4A rotary injection blow molding mold comprises a rotary mold 100, an injection mold 400 and a blow molding mold 500, wherein movable molds 200 that can be opened and closed are respectively arranged on both sides of the rotation, and clamping spaces that can be opened and closed along the front-back direction are respectively formed in the two movable molds 200, and the clamping spaces in each movable mold 200 are arranged in multiple intervals along the up-down direction, and the rotary mold 100 is provided with multiple core injection heads 300, and the multiple core injection heads 300 are respectively opposite to the multiple clamping spaces, and the multiple core injection heads 300 are respectively opposite to the multiple clamping spaces. The core injection heads 300 respectively pass through the multiple clamping spaces on both sides and form a blowing port 321 and an injection port 332; the injection mold 400 can move in a direction close to or away from the rotating mold 100, and the injection mold 400 is respectively provided with injection cavities 410 at the positions facing the multiple clamping spaces; the blow mold 500 can move in a direction close to or away from the rotating mold 100, and the blow mold 500 is respectively provided with a molding cavity 510 on one side facing the multiple clamping spaces. In actual applications, the number of injection cavities 410 and the number of molding cavities 510 are the same as the number of clamping spaces located on the same side of the rotary mold 100. At this time, each injection cavity 410 and the molding cavity 510 are respectively opposite to a clamping space, and multiple core injection heads 300 arranged on the same vertical line are a core injection group. The core injection group in the rotary mold 100 can be arranged in multiples along the front-to-back direction. Similarly, the movable molds 200 located on both sides of the rotary mold 100 can also be arranged in multiples along the front-to-back direction. Multiple injection cavities 410 arranged on the same vertical line on the injection mold 400 are an injection group, and multiple molding cavities 510 arranged on the same vertical line on the molding mold are a molding group. The injection group on the injection mold 400 and the molding group on the molding mold can be arranged in multiples along the front-to-back direction, which can further increase the number of products processed in a single mold closing process.

[0029] As can be seen from the above, when in use, the rotary mold 100 is connected to a rotary drive source of an external device, and the rotary drive source can use a drive structure such as a reduction motor, and any two of the injection mold 400, the rotary mold 100 and the blow mold 500 are connected to a translational drive source of an external device. The translational drive source can use a drive structure that can provide a reciprocating drive force such as a cylinder, a hydraulic cylinder or an electric screw, thereby driving the injection mold 400 and the blow mold 500 to approach or move away from the rotary mold 100 from both sides of the rotary mold 100. Before work, multiple clamping spaces in the movable molds 200 on both sides of the rotary mold 100 are in an open state, and the injection mold 400 and the blow mold 500 are respectively in a state of being away from each other from the rotary mold 100. During work, the injection mold 400 and The blow mold 500 moves relatively close to the two sides of the rotary mold 100. At this time, the multiple clamping spaces in the movable molds 200 on both sides of the rotary mold 100 gradually close to the core injection heads 300 located inside thereof, so that the movable molds 200 on both sides and the multiple core injection heads 300 connected to the movable mold 200 respectively close the multiple injection cavities 410 and the molding cavity 510 facing each other. At this time, for the injection cavity 410, the core injection head 300 extending into the interior thereof can be used for injection molding from the injection port 332, and a preform is obtained after completion. Then, the injection mold 400 and the blow mold 500 are relatively away from the rotary mold 100, and the mold is separated. The preform obtained by injection molding exits the injection cavity 410, and then the rotary mold 100 rotates, so that the movable molds 200 on both sides and the injection molding are closed. The core heads 300 are interchanged, and the injection mold 400 and the blow mold 500 are relatively moved close to the two sides of the rotary mold 100. Similarly, the movable molds 200 on both sides of the rotary mold 100 and the multiple core heads 300 connected to the movable mold 200 respectively close the multiple injection cavities 410 and the molding cavities 510 facing each other. At this time, for the molding cavity 510, the multiple core heads 300 extending into the interior thereof can be blow-molded from the blowing port 321 to the preform, and for the injection cavity 410, the core heads 300 extending into the interior thereof can also be injection-molded. After completion, the product is blow-molded on the core heads 300 located in the molding cavity 510, and the preform is injection-molded on the core heads 300 located in the injection cavity 410. The plastic mold 400 and the blow mold 500 are relatively far away from the rotary mold 100, and the molds are separated. The preform obtained by injection molding exits the injection cavity 410, and the product obtained by blow molding also exits the molding cavity 510, and the clamping space on the side of the molded product is opened, so that the molded product can fall, and the above steps are repeated. In this way, injection molding and blow molding can be achieved in a complete set of molds at the same time, and the preform obtained by injection molding on one side of the rotary mold 100 is directly turned over to the other side for blow molding, which reduces the structure of long-distance movement between the traditional injection mold 400 and the blow mold 500, reduces the overall volume, reduces the space volume occupied by the overall equipment, and reduces the time for transferring the preforms, greatly improving the overall production efficiency.

[0030] After the product is blow-molded, the blow mold 500 and the rotary mold 100 are relatively separated from each other, so that the multiple core injection heads 300 withdraw from the molding cavity 510, and then the movable mold 200 opens multiple clamping spaces. At this time, the product molded on the core injection head 300 can fall from the core injection head 300 under the action of gravity. In order to ensure that all molded products can fall from the core injection head 300, in this embodiment, the rotary mold 100 includes a core seat 110 and movable plates 120 connected to the left and right sides of the core seat 110. The two movable plates 120 can move in the left and right directions on both sides of the core seat 110. The two movable molds 200 are respectively connected to the side of the two movable plates 120 away from each other, and the multiple core injection heads 300 are respectively connected to the left and right sides of the core seat 110. In actual applications, there are various structural forms for the movable plate 120 to move left and right. A translation driving source can be directly configured in the core base 110, and the movable plate 120 can be driven by the translation driving source to move left and right. Alternatively, a translation driving source can be installed outside the core base 110, and then the translation driving source is connected to the movable plate 120, thereby driving the movable plate 120 to move left and right. The main function of the translation driving source is to provide a driving force for movement along the left and right directions. There are various structural forms, such as an electric push rod, a cylinder or a hydraulic cylinder, and in order to further improve the stability of the movement of the movable plate 120, the movable plate 120 can be slidably connected to the core base 110. After the product is processed and formed, the core seat 110 and the blow mold 500 move away from each other to achieve mold separation, and the molded product is separated from the molding cavity 510. The multiple clamping spaces in the movable mold 200 are opened. At this time, the movable plate 120 moves in the direction away from the core seat 110, driving the opened movable mold 200 to move to the right. When there is still a product that has not fallen off the injection head 300, the movable mold 200 will push the product out of the injection head 300, and then the movable plate 120 moves and resets in the direction close to the core seat 110. This can effectively ensure that the product can completely fall out of the injection head 300 after each mold separation, avoid affecting the next processing, and further improve the stability of the overall processing.

[0031] The core injection head 300 can be used for injection molding or blowing, and can be selected according to different usage requirements. For example, the material pipe used for injection molding and the blowing pipe can be directly connected to the core injection head 300. In order to make the overall structure more compact, Figure 5 and Figure 6As shown, in this embodiment, the core injection head 300 includes a core injection sleeve 310, a blow cylinder 320 and a core injection cylinder 330, one end of the core injection sleeve 310 is connected to the core seat 110, the blow cylinder 320 is connected to the other end of the core injection sleeve 310 and extends out of the clamping space, one end of the blow cylinder 320 extending out of the clamping space forms the blowing port 321, the core injection cylinder 330 extends from one end of the blow cylinder 320 connected to the core seat 110 into the blowing port 321, and the core injection cylinder 330 extends to one end of the blow cylinder 320 to form the injection port 332. The core injection sleeve 310, the blow cylinder 320 and the core injection barrel 330 themselves are hollow structures. In actual applications, an air inlet hole that is interconnected with the inside of the blow cylinder 320 can be opened on the outside of the core injection sleeve 310. In this case, it is necessary to open an air inlet flow channel that is interconnected with the air inlet hole in the core seat 110, or directly open an air inlet hole on the outside of the blow cylinder 320. Since the end of the core injection barrel 330 is located outside the core injection sleeve 310, a feed channel that is connected to the core injection barrel 330 can be directly opened in the core seat 110.

[0032] In the core injection head 300 of this embodiment, when injection molding is required, material is input from the end of the core injection tube 330 connected to the core seat 110, and the material is injected into the injection cavity 410 through the core injection tube 330 to achieve injection molding; when blow molding is required, gas is introduced into the core injection sleeve 310. At this time, the gap between the blow cylinder 320 and the core injection tube 330 can allow air to pass through, and finally the bottle blank is blow-molded from the blow port 321 formed at the end of the blow cylinder 320. In this way, the core injection head 300 can be used for injection molding or blow molding according to usage needs.

[0033] Since the end of the blow tube 320 away from the core seat 110 protrudes outside the core injection sleeve 310, that is, the blow port 321 is designed to be exposed, when the core injection head 300 needs to be injection molded, the material can easily enter the blow tube 320 from the blow port 321, blocking the blow port 321 and affecting the subsequent blowing process. Therefore, in the present embodiment, a core block 111 that can move left and right is provided in the core seat 110, and a plurality of the core injection tubes 330 are respectively connected to the left and right sides of the core block 111, and a tapered section 331 is formed on the outer side of the end of the core injection tube 330 away from the core block 111, and the outer diameter of the tapered section 331 gradually increases in the direction away from the core block 111. When the core block 111 moves to either side, the plurality of tapered sections 331 located on the other side respectively block the blow port 321 passing through. In actual applications, the inner side of the end of the blowing cylinder 320 close to the conical section 331 can also be a conical structure, and its shape is adapted to the conical section 331. Therefore, when the conical section 331 blocks the blowing port 321, the conical section 331 cooperates with the conical structure at the end of the blowing cylinder 320 to improve the blocking effect of the blowing port 321. Since the core injection cylinder 330 is connected to the core block 111, a feeding channel can be provided in the core block 111, and at this time, the core injection cylinder 330 can be fed through the core block 111.

[0034] In the core seat 110 with the core block 111, when the injection mold 400 and the blow mold 500 are close to the rotary mold 100, the core block 111 drives the core cylinders 330 connected on both sides to move left or right, so that the conical section 331 of the core cylinder 330 located in the injection cavity 410 blocks the blowing port 321, while the conical section 331 of the core cylinder 330 located in the blow cavity opens the blowing port 321. In the injection cavity 410, the conical section 331 blocks the blowing port 321. The opening 321 is blocked, and when the core injection tube 330 injects material into the injection cavity 410, the material will not flow into the blowing port 321 to block the blowing port 321. In the blow molding cavity, since the conical section 331 opens the blowing port 321, the bottle blank can be stably blow-molded through the blowing port 321. In this way, the blowing port 321 can be opened or closed according to the processing and use needs, which effectively prevents the material from blocking the blowing port 321 during the injection molding process, greatly improving the stability of the core injection head 300 when in use.

[0035] As for the movement of the core block 111 in the core base 110, a driving source for driving the core block 111 to move left and right can be directly arranged in the core base 110, such as an electric screw, a cylinder or a hydraulic cylinder. In order to simplify the structure, the relative movement of the injection mold 400, the blow mold 500 and the rotary mold 100 can be used to drive the core block 111 to move. Specifically, both ends of the core block 111 are respectively connected to a top column 112, and the two top columns 112 protrude from the movable mold 200 on both sides. When the injection mold 400 is close to the rotary mold 100, the injection mold 400 is pressed against the top column 112 directly opposite to it. When the injection mold 400 and the blow mold 500 are relatively close to the rotary mold 100, the injection mold 400 pushes the core block 111 in the core seat 110 by pressing the ejector pin 112, and the ejector pin 112 on the side opposite to the blow mold 500 is further protruded out of the blow mold 500 driven by the core block 111. In this way, the closing action of the injection mold 400, the blow mold 500 and the rotary mold 100 can be utilized to directly drive the movement of the core injection barrel 330 in the core injection head 300, thereby realizing the function switching of the auxiliary core injection head 300 for injection molding or blow molding, without the need to configure an additional driving source, and the overall structure is more concise. In addition, in order to improve the activity stability of the core block 111 in the core seat 110, a sliding connection structure can be set between the core block 111 and the inside of the core seat 110. For example, one of the slide rails or slide grooves is set on the core block 111, and the other of the slide rails or slide grooves is set on the inner side of the core seat 110. Through the mutual cooperation of the slide rails and the slide grooves, the core block 111 can drive the multiple core injection barrels 330 to move stably.

[0036] When the clamping space in the movable mold 200 needs to be opened and closed, a driving structure can be provided in the movable mold 200 to open or close the clamping space. In order to reduce the driving source, a transmission structure can be provided between the movable mold 200 and the core seat 110, so as to convert the power of the relative approach of the movable mold 200 and the core seat 110 into the power to drive the movable mold 200 to move. Specifically, the transmission structure includes guide grooves 113 formed on the front and rear sides of the core seat 110, a first slide bar 121 and a second slide bar 122 slidably connected to the plate of the movable mold 200 along the front and rear directions, guide sections are respectively formed in the two guide grooves 113, and the two guide sections are inclined toward the direction close to the core seat 110. The movable mold 200 includes a first slide bar 121 and a second slide bar 122 connected to the plate of the movable mold 200 along the front and rear directions. A front mold on a slide bar 121 and a rear mold connected to the second slide bar 122, the clamping space is formed between the front mold and the rear mold, the front mold located on the front side is connected to a front bearing, and the rear mold located on the rear side is connected to a rear bearing, the front bearing and the rear bearing can enter the two guide grooves 113 respectively, the injection mold 400 is provided with a top pressure piece 420, when the injection mold 400 approaches the rotating mold 100, the top pressure piece 420 presses the movable plate 120 facing it toward the core seat 110, the blow mold 500 is provided with a transmission piece 520, and the blow mold 500 can drive the movable plate 120 facing it to approach or move away from the core seat 110 through the transmission piece 520. In actual application, the guide groove 113 includes a first straight section, a guide section and a second straight section connected in sequence, the first straight section passes through one end of the guide rod close to the movable mold 200, and the first straight section and the second straight section both extend in the left-right direction. The first straight section can be used to improve the stability of the front bearing and the rear bearing entering the guide groove 113, and then the front bearing and the rear bearing are guided by the guide section, and finally the third straight section is used to stabilize the position of the guide activities of the front bearing and the rear bearing. In addition, when there is only one movable mold 200, the front bearing is connected to the front side of the front mold of the movable mold 200, and the rear bearing is connected to the rear side of the rear mold of the movable mold 200. When there are multiple movable molds 200 arranged along the front-to-back direction, the front bearing is connected to the front side of the front mold of the movable mold 200 located at the frontmost side, and the rear bearing is connected to the rear side of the rear mold of the movable mold 200 located at the rearmost side.

[0037] In the implementation manner of the above-mentioned movable mold 200 to realize the opening and closing of the clamping space, the injection mold 400 or the blow mold 500 is brought close to the rotary mold 100, and the top pressure piece 420 on the injection mold 400 or the transmission piece 520 on the blow mold 500 will respectively press the movable plate 120 facing it toward the core seat 110. For each movable mold 200, the front bearing and the rear bearing respectively enter the guide grooves 113 of the two guide rods. Under the guiding effect of the inclined guide grooves 113 on the front bearing and the rear bearing, the front mold located on the front side can be driven to slide on the movable plate 120 through the first slide bar 121, and the rear mold located on the rear side can be driven to slide on the movable plate 120 through the second slide bar 122, so that the front mold and the rear mold are brought close to each other and multiple clamping spaces are closed. When there are multiple movable molds 200, the front molds of the multiple movable molds 200 are respectively connected to the first slide bar 121. 121, the rear molds of multiple movable molds 200 are also connected to the second slide bar 122 respectively. The first slide bar 121 and the second slide bar 122 can respectively drive the multiple movable molds 200 to open the clamping space at the same time. Similarly, when the blow mold 500 is away from the core seat 110, the transmission member 520 pulls the movable mold 200 facing the blow mold 500 away from the core seat 110, and the front bearing and the rear bearing respectively withdraw from the guide groove 113 of the two guide rods. Under the guiding effect of the inclined guide groove 113 on the front bearing and the rear bearing, the front mold and the rear mold can be driven away from each other, thereby realizing the opening of multiple clamping spaces. In this way, the driving force for the translational movement of the injection mold 400 and the blow mold 500 is simultaneously converted into the power to drive the opening and closing of multiple clamping spaces in the movable mold 200, thereby reducing the driving source, better controlling the volume of the entire mold, and being more practical.

[0038] The pressing member 420 is mainly used to push the movable plate 120 facing the injection mold 400 toward the core seat 110 when the injection mold 400 approaches the rotary mold 100. There are many structural forms, such as a rigid structure directly connected to the injection mold 400. In this embodiment, the pressing member 420 includes a spring rod connected to the injection mold 400. When the injection mold 400 approaches the core seat 110, the spring rod presses against the movable plate 120 facing it, pushing the movable plate 120 toward the core seat 110. As the injection mold 400 gradually moves, the spring rod is gradually compressed, gradually pressing the movable plate 120 against the core seat 110. The spring rod can be used to increase the pressing force on the movable plate 120 and improve the structural stability of the movable plate 120 close to the core seat 110.

[0039] The transmission member 520 is mainly used to drive the movable plate 120 opposite to the blow mold 500 to move closer to or away from the core seat 110 when the blow mold 500 moves closer to or away from the core seat 110. There are various structural forms, such as a connecting rod mechanism connected between the blow mold 500 and the movable plate 120. In the present embodiment, the transmission member 520 includes an elastic rod, and the movable plate 120 is provided with a transmission hole 123 which can be interference-fitted with the elastic rod. When the blow mold 500 approaches the core seat 110, the elastic rod is inserted into the transmission hole 123. Since there is an interference fit between the elastic rod and the transmission hole 123, as the blow mold 500 gradually approaches, the elastic rod will be gradually pressed into the transmission hole 123. During this process, the movable plate 120 is also pushed toward the core seat 110. When the blow mold 500 moves away from the core seat 110, the friction between the elastic rod and the transmission hole 123 drives the movable plate 120 away from the core seat 110. After the front bearing and the rear bearing are respectively moved into place in the guide groove 113, the movable plate is restricted. 120 is translated into motion, and the elastic rod is pulled out of the transmission hole 123. In practical applications, in order to better protect the front bearing and the rear bearing, a structure for limiting the travel of the movable plate 120 can be set between the movable plate 120 and the core seat 110. In addition, the elastic rod and the transmission hole 123 are easily worn when they are constantly connected, matched and pulled out. Therefore, the elastic rod can be set as a rod body connected to the blow mold 500, and a detachable and replaceable elastic sleeve and other structures can be set on the rod body. When maintenance is required, only the elastic sleeve needs to be replaced.

[0040] The number of the first slide bar 121 can be only one, and the first slide bar 121 can be relatively set at the top, middle or bottom of the front mold. When there are multiple movable molds 200, the first slide bar 121 needs to be relatively set at the top or bottom of the front mold. At this time, the sliding stability of the front mold will be reduced. In order to improve the sliding stability of the front mold, in this embodiment, two first slide bars 121 are arranged at intervals along the up and down direction, and the upper and lower ends of the front mold are respectively connected to the two first slide bars 121. When the front mold moves forward and backward, its upper and lower ends slide on the connecting plate respectively through the first slide bar 121, which greatly improves the stability of the front mold movement, thereby further improving the product production quality.

[0041] The number of the second slide bar 122 can be only one, and in this case, the second slide bar 122 can be relatively set at the top, middle or bottom of the rear mold. When there are multiple movable molds 200, the second slide bar 122 needs to be relatively set at the top or bottom of the rear mold. In this case, the sliding stability of the rear mold will be reduced. In order to improve the sliding stability of the rear mold, in this embodiment, two second slide bars 122 are arranged at intervals along the up and down direction, and the upper and lower ends of the rear mold are respectively connected to the two second slide bars 122. When the rear mold moves forward and backward, its upper and lower ends slide on the connecting plate respectively through the first slide bar 121, which greatly improves the stability of the rear mold movement, thereby further improving the product production quality.

[0042] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A rotary injection blow molding mold, characterized in that: include: A rotary mold (100) is provided with movable molds (200) that can be opened and closed on both sides, and clamping spaces that can be opened and closed along the front-back direction are formed in the two movable molds (200), and a plurality of the clamping spaces in each movable mold (200) are arranged at intervals along the up-down direction. A plurality of core injection heads (300) are provided in the rotary mold (100), and the plurality of core injection heads (300) respectively pass through the plurality of clamping spaces on both sides and form blowing ports (321) and injection ports (332); The injection mold (400) is movable in a direction approaching or moving away from the rotating mold (100), and the injection mold (400) is provided with injection cavities (410) at positions facing the plurality of clamping spaces; The blow mold (500) can move in a direction approaching or away from the rotating mold (100), and molding cavities (510) are respectively arranged on one side of the blow mold (500) facing the plurality of clamping spaces.

2. A rotary injection blow molding mold according to claim 1, characterized in that: The rotary mold (100) comprises a core seat (110), and movable plates (120) connected to the left and right sides of the core seat (110); the two movable plates (120) can move along the left and right directions on both sides of the core seat (110); two movable molds (200) are respectively connected to the sides of the two movable plates (120) that are away from each other; and a plurality of core injection heads (300) are respectively connected to the left and right sides of the core seat (110).

3. A rotary injection blow molding mold according to claim 2, characterized in that: The core injection head (300) comprises a core injection sleeve (310), a blow cylinder (320) and a core injection cylinder (330), one end of the core injection sleeve (310) is connected to the core seat (110), the blow cylinder (320) is connected to the other end of the core injection sleeve (310) and extends out of the clamping space, one end of the blow cylinder (320) extending out of the clamping space forms the blow port (321), the core injection cylinder (330) extends from one end of the blow cylinder (320) connected to the core seat (110) into the blow port (321), and the core injection cylinder (330) extends to one end of the blow cylinder (320) to form the injection port (332).

4. A rotary injection blow molding mold according to claim 3, characterized in that: A core block (111) movable left and right is arranged in the core seat (110), and a plurality of core injection barrels (330) are respectively connected to the left and right sides of the core block (111). A conical section (331) is formed on the outer side of the end of the core injection barrel (330) away from the core block (111), and the outer diameter of the conical section (331) gradually increases in a direction away from the core block (111). When the core block (111) moves to either side, the plurality of conical sections (331) located on the other side respectively block the blowing port (321) passing through.

5. A rotary injection blow molding mold according to claim 4, characterized in that: Both ends of the core block (111) are respectively connected to top pillars (112), and the two top pillars (112) respectively protrude from the movable mold (200) on both sides, and when the injection mold (400) approaches the rotary mold (100), the injection mold (400) presses against the top pillars (112) directly facing it.

6. A rotary injection blow molding mold according to claim 2, characterized in that: A transmission structure is provided between the core seat (110) and the movable mold (200), the transmission structure comprising guide grooves (113) formed on the front and rear sides of the core seat (110), a first slide bar (121) and a second slide bar (122) slidably connected to the movable mold (200) plate along the front and rear directions, guide sections are respectively formed in the two guide grooves (113), and the two guide sections are inclined toward the direction approaching the core seat (110), the movable mold (200) comprises a front mold connected to the first slide bar (121), and a rear mold connected to the second slide bar (122), and the clamping space is formed between the front mold and the rear mold The front mold located at the front side is connected to a front bearing, and the rear mold located at the rear side is connected to a rear bearing, and the front bearing and the rear bearing can enter the two guide grooves (113) respectively. The injection mold (400) is provided with a top pressure piece (420). When the injection mold (400) approaches the rotating mold (100), the top pressure piece (420) presses the movable plate (120) facing it toward the core seat (110). The blow mold (500) is provided with a transmission piece (520). The blow mold (500) can drive the movable plate (120) facing it to approach or move away from the core seat (110) through the transmission piece (520).

7. A rotary injection blow molding mold according to claim 6, characterized in that: The pressing member (420) includes a spring rod connected to the blow mold (500).

8. The rotary injection blow molding mold according to claim 6, characterized in that: The transmission member (520) comprises an elastic rod, and the movable plate (120) is provided with a transmission hole (123) capable of interference fit with the elastic rod.

9. The rotary injection blow molding mold according to claim 6, characterized in that: Two first sliding bars (121) are arranged at intervals in the up-down direction, and the upper and lower ends of the front mold are respectively connected to the two first sliding bars (121).

10. The rotary injection blow molding mold according to claim 6, characterized in that: Two second sliding bars (122) are arranged at intervals in the up-down direction, and the upper and lower ends of the rear mold are respectively connected to the two second sliding bars (122).

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