Multi-material rotating disc type injection molding machine

Abstract

The utility model discloses a multi-material rotating disc type injection molding machine, which relates to the technical field of injection molding equipment and comprises a rotating disc. The rotating device is used for driving the rotating disc to rotate, so that the injection mold mounted on the rotating disc passes through at least two injection stations; wherein the rotating disc is of an annular structure, a flow distribution device is arranged on the annular inner side of the rotating disc, the flow distribution device comprises a flow distribution seat and a flow distribution ring, the flow distribution ring is movably arranged on the outer side of the flow distribution seat in a sleeving mode, and the flow distribution ring and the flow distribution seat are connected in a sealed mode; the flow distribution ring is fixedly connected with the rotating disc so that the flow distribution ring and the rotating disc can rotate synchronously. According to the technical scheme, the liquid pipeline can be prevented from being broken and losing efficacy due to back-and-forth pulling and winding.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, and particularly relates to a multi-material rotary injection molding machine. Background Technique

[0002] A multi-material rotary injection molding machine injects two or more different materials or different colors of materials into the same injection mold respectively through a plasticizing injection device, so as to obtain a multi-material injection molded product; wherein the injection mold can move to the injection stations corresponding to each plasticizing injection device in a rotary displacement manner in the injection molding machine.

[0003] For the convenience of understanding, a two-material rotary injection molding machine is used for illustration in this application. The two-material rotary injection molding machine generally only has two injection stations, and the two injection stations are respectively located at the angular positions of 0° and 180°; the rotating device drives the injection mold to rotate back and forth between 0° and 180°; and when the injection mold is operating, it needs to be connected to a coolant or hydraulic oil through a liquid pipeline, wherein on the one hand, the coolant is used to cool down the injection mold, and on the other hand, it is used to accelerate the solidification speed of the molten plastic; wherein the hydraulic oil is used as the power source of the hydraulic drive device in the injection mold.

[0004] In the related art, the liquid pipeline of the multi-material rotary injection molding machine adopts a through-type pipe laying method, that is, the liquid pipeline penetrates out from the annular inner side of the turntable. Since the liquid pipeline is pulled back and forth by the injection mold during the back-and-forth cyclic rotation of the turntable, the liquid pipeline is easily broken and fails.

[0005] It should be noted that the above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is the prior art. Content of the Utility Model

[0006] The main purpose of the utility model is to propose a multi-material rotary injection molding machine, aiming to avoid the liquid pipeline from being broken and failing due to back-and-forth pulling and winding.

[0007] To achieve the above purpose, the utility model proposes a multi-material rotary injection molding machine, including:

[0008] A frame;

[0009] A turntable, the turntable is rotatably connected to the frame;

[0010] A rotating device, the rotating device is used to drive the turntable to rotate, so that the injection mold installed on the turntable passes through at least two injection stations;

[0011] Wherein, the turntable has an annular structure, and a flow distribution device is arranged on the inner side of the annular turntable. The flow distribution device includes a flow distribution seat and a flow distribution ring. The flow distribution ring is movably sleeved outside the flow distribution seat, and the flow distribution ring and the flow distribution seat are hermetically connected to each other. The flow distribution ring is fixedly connected to the turntable so that the flow distribution ring can rotate synchronously with the turntable. The flow distribution seat is provided with a liquid channel, and the flow distribution ring is provided with a liquid interface. The first end of the liquid interface is communicated with the liquid channel, and the second end of the liquid interface is used for communicating with the corresponding port of the injection mold.

[0012] In an embodiment, the liquid channel includes a first liquid channel and a second liquid channel that are communicated with each other. The first liquid channel is arranged inside the flow distribution seat, and the second liquid channel is annularly arranged around the outer side of the flow distribution seat and is recessed. The end of the first liquid channel away from the second liquid channel is used for connecting with an external liquid pipeline.

[0013] In an embodiment, the flow distribution ring includes a plurality of annular sleeves fixedly arranged in a stacked manner, and each annular sleeve is provided with the liquid interface. A heat insulation ring is arranged between adjacent annular sleeves.

[0014] In an embodiment, the flow distribution device includes a plurality of the liquid interfaces. Specifically, among the plurality of liquid interfaces, there are two groups of coolant interfaces and two groups of hydraulic oil interfaces. The annular sleeve includes a first annular sleeve and a second annular sleeve. The two groups of coolant interfaces are installed on the first annular sleeve, and the two groups of hydraulic oil interfaces are installed on the second annular sleeve.

[0015] In an embodiment, a step portion is arranged on the outer side of the annular flow distribution seat, and the step portion is used as a supporting surface for the flow distribution ring.

[0016] In an embodiment, the flow distribution device further includes an electric slip ring. The electric slip ring is sleeved outside the flow distribution seat. The electric slip ring is used for electrically connecting with the power supply port of the injection mold. A second through hole portion is arranged through the middle of the flow distribution seat, and the second through hole portion is used for the power supply line to pass through so that the power supply end of the power supply line is electrically connected with the electric slip ring.

[0017] In an embodiment, the multi-material turntable type injection molding machine further includes a material taking station, and at least two of the injection stations and the material taking station respectively correspond to an injection mold. When the rotating device drives the injection mold to rotate to the material taking station, a material taking operation is performed on the injection product in the injection mold.

[0018] In one embodiment, an ejecting device is correspondingly arranged at the material taking station, and the ejecting device is installed on the frame; the ejecting device includes a plurality of ejector rods and a telescopic driving device, and the turntable is provided with ejecting holes for the ejector rods to pass through; the telescopic driving device is used to drive the ejector rods to pass through the ejecting holes to drive the ejector pin module in the injection mold.

[0019] In one embodiment, the multi-material turntable type injection molding machine includes a mounting seat, and the mounting seat is located above the injection station of the turntable; the mounting seat is used to mount the plasticizing injection device; the mounting seat is fixedly connected to the frame through at least two vertically arranged support columns.

[0020] In one embodiment, one of the at least two support columns is located inside the annular shape of the turntable, and the remaining support columns are located outside the annular shape of the turntable; a first through-hole portion is provided in the middle of the flow distribution seat, and the first through-hole portion is used for the support column to pass through.

[0021] The technical solution of the present utility model is to set a flow distribution device inside the annular shape of the turntable, wherein the flow distribution device includes a flow distribution seat and a flow distribution ring, and the flow distribution seat and the flow distribution ring can rotate relative to each other and are hermetically connected to each other to ensure that the liquid will not leak when flowing between the flow distribution seat and the flow distribution ring; during operation, liquids such as coolant or hydraulic oil are input from the liquid pipeline into the liquid channel of the flow distribution seat, and then are transported to the injection mold through the liquid interface of the flow distribution ring; during this period, the flow distribution ring can also rotate together while the turntable rotates, so that the turntable and the flow distribution ring are in a relatively static state, avoiding the liquid pipeline from breaking and failing due to back-and-forth pulling and winding. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the multi-material turntable type injection molding machine provided by the present utility model;

[0024] Figure 2 For Figure 1 The partial enlarged view at A in

[0025] Figure 3 It is a schematic structural diagram of the flow distribution device in an embodiment of the multi-material turntable type injection molding machine provided by the present utility model;

[0026] Figure 4 Schematic exploded view of the flow distribution device in an embodiment of the multi-material rotary injection molding machine provided by the present utility model;

[0027] Figure 5 Internal structure schematic diagram of the flow distribution seat in an embodiment of the multi-material rotary injection molding machine provided by the present utility model.

[0028] Description of reference numerals:

[0029] 1. Plasticizing and injecting device; 2. Turntable; 201. Mounting hole; 202. Ejecting hole; 3. Injection station; 4. Material taking station; 5. Frame; 6. Ejecting device; 601. Ejector rod; 7. Mounting seat; 8. Support column; 9. Flow distribution device; 10. Flow distribution seat; 1001. First through-hole part; 1002. First liquid channel; 1003. Second liquid channel; 1004. Step surface; 1005. Second through-hole part; 11. Flow distribution ring; 1101. Liquid interface; 1102. Cooling liquid interface; 1103. Hydraulic oil interface; 1104. First annular sleeve; 1105. Second annular sleeve; 1106. Heat insulation ring; 12. Electric slip ring; 13. Rotating device; 1301. Servo motor; 1302. Gear transmission mechanism;

[0030] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0031] The technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described ones are only some embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, it should be noted that in the present utility model, the descriptions involving "first", "second", etc. are only for descriptive purposes, and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] In the related art, the liquid pipelines of a multi-material rotary injection molding machine adopt a through-type pipeline routing method, that is, the liquid pipelines pass through from the annular inner side of the turntable. Since during the process of the turntable rotating back and forth in a cycle, the liquid pipelines are pulled back and forth correspondingly by the injection molds, in this way, the liquid pipelines are prone to breakage and failure.

[0035] To solve the above technical problems, the present utility model proposes a multi-material rotary injection molding machine.

[0036] Please refer to Figures 1-5 , in an embodiment of the present utility model, the multi-material rotary injection molding machine includes:

[0037] A frame 5;

[0038] A turntable 2, which is rotatably connected to the frame 5; wherein a plurality of injection molds (not shown in the drawings) are provided on the turntable 2, and the plurality of injection molds are annularly distributed at equal distances around the central axis of the turntable 2;

[0039] A rotating device 13, which is used to drive the turntable 2 to rotate so that the injection molds installed on the turntable 2 pass through at least two injection stations 3; specifically, the rotating device 13 can be selected as a servo motor 1301 combined with a gear transmission mechanism 1302 to drive its rotation from the side of the turntable 2, with a simple structure and strong practicability. At the same time, the angle control can be more accurate when driving the turntable to rotate; each injection station 3 is respectively provided with a plasticizing injection device 1, and the plasticizing injection device 1 is used to perform injection molding on the injection molds.

[0040] Among them, the turntable 2 is in a ring structure, and a flow distribution device 9 is arranged on the inner side of the ring of the turntable 2. The flow distribution device 9 includes a flow distribution seat 10 and a flow distribution ring 11. The flow distribution ring 11 is movably sleeved on the outer side of the flow distribution seat 10, and the flow distribution ring 11 is hermetically connected to the flow distribution seat 10; in this embodiment, the flow distribution seat adopts a circular structure and the flow distribution ring adopts a ring structure; the flow distribution ring 11 is fixedly connected to the turntable 2 so that the flow distribution ring 11 can rotate synchronously with the turntable 2; the flow distribution seat 10 is provided with a liquid channel, and the flow distribution ring 11 is provided with a liquid interface 1101. The first end of the liquid interface 1101 is communicated with the liquid channel, and the second end of the liquid interface 1101 is used for communicating with the corresponding port of the injection mold.

[0041] The technical solution of the present utility model is to arrange a flow distribution device 9 on the inner side of the ring of the turntable 2. The flow distribution device 9 includes a flow distribution seat 10 and a flow distribution ring 11. The flow distribution seat 10 and the flow distribution ring 11 can rotate relative to each other and are hermetically connected to ensure that the liquid will not leak when flowing between the flow distribution seat 10 and the flow distribution ring 11; during operation, liquids such as coolant or hydraulic oil are input into the liquid channel of the flow distribution seat 10 from the liquid pipeline, and then are delivered to the injection mold through the liquid interface 1101 of the flow distribution ring 11; during this period, while the turntable 2 rotates, the flow distribution ring 11 can also rotate therewith, so that the turntable 2 and the flow distribution ring 11 are in a relatively static state, avoiding the liquid pipeline from breaking and failing due to being pulled and wound back and forth.

[0042] It can be understood that a common injection mold includes an upper mold and a lower mold. When the injection mold is in the injection molding state, the upper mold and the lower mold are in the closed mold state so that a closed mold cavity is formed inside the injection mold for the plasticizing injection device 11 to inject the molten masterbatch; when the injection mold is in the material taking state, the upper mold and the lower mold are in the open mold state to facilitate the operator to take out the injection molded product inside the injection mold. Since the injection mold belongs to the prior art, the specific structure thereof will not be described in detail in this application.

[0043] Among them, the plasticizing injection device 1 is a device that injects the plastic in the molten state (i.e., the viscous flow state) that has been plasticized into the mold cavity of the closed injection mold by means of the thrust of a screw (or a plunger). Since the plasticizing injection device 1 belongs to the prior art, the specific structure thereof will not be described in detail in this application.

[0044] Among them, a plurality of mounting holes 201 are arranged on the surface of the turntable 2. The mounting holes 201 are used for mounting the injection mold. By setting it like this, considering the differences in the shape and volume of the injection molds corresponding to different injection molded products, by arranging a plurality of mounting holes 201, the turntable 2 can install and fix injection molds with different shapes and volumes to ensure the smooth implementation of this embodiment, with a simple structure and strong practicability.

[0045] Among them, there are many specific structures of the liquid channel. In one embodiment, the liquid channel includes a first liquid channel 1002 and a second liquid channel 1003 that are interconnected. The first liquid channel 1002 is disposed inside the distribution seat 10, and the second liquid channel 1003 is annularly disposed around the outer ring of the distribution seat 10 and is recessed; one end of the first liquid channel 1002 away from the second liquid channel 1003 is used to connect to an external liquid pipeline. With such a setting, when operating, liquids such as coolant or hydraulic oil are injected into the distribution seat 10 from the liquid pipeline, and then pass through the first liquid channel 1002 and the second liquid channel 1003 in sequence, and finally communicate with the injection mold through the liquid interface 1101 of the distribution ring 11; since the second liquid channel 1003 is annularly disposed around the outer ring of the distribution seat 10 and is recessed, theoretically, when the distribution ring 11 rotates to any angle, its liquid interface 1101 can communicate with the second liquid channel 1003, so that the present distribution device 9 can be applied to a rotary injection molding machine for two-component or three-component materials, effectively improving the applicability of the distribution device 9.

[0046] Furthermore, a stepped portion is provided on the outer ring of the distribution seat 10, and the stepped portion is used as a supporting surface for the distribution ring 11; with such a setting, the distribution ring 11 can be supported on the outer side of the distribution seat 10 through the stepped portion, and the structure is simple and practical.

[0047] Furthermore, a rubber layer (not shown in the drawings) is provided between the distribution seat 10 and the distribution ring 11; with such a setting, the elastic deformation of the rubber layer is utilized to enable the distribution seat 10 and the distribution ring 11 to fit each other, avoiding gaps, so as to ensure that liquids such as coolant or hydraulic oil do not leak from the gap between the distribution seat 10 and the distribution ring 11. It should be noted that due to the elastic deformation characteristics of the rubber layer, it will not hinder the relative rotation between the distribution seat 10 and the distribution ring 11, so as to ensure the smooth implementation of the embodiments of the present application.

[0048] Furthermore, the distribution ring 11 includes an annular sleeve (not shown in the drawings) that is fixedly stacked, and the annular sleeve is provided with a liquid interface 1101; a heat insulation ring 1106 is provided between adjacent annular sleeves. With such a setting, considering that the injection mold needs to operate with various different types of functional liquids, such as coolant and hydraulic oil, and there are different temperatures between these functional liquids. To avoid the mutual influence of the temperatures between different types of functional liquids, in this embodiment, the corresponding liquid interfaces of different types are respectively installed on each annular sleeve, and a heat insulation ring 1106 is provided between adjacent annular sleeves to isolate the heat transfer between different types of functional liquids.

[0049] Further, the flow distribution device 9 includes a number of liquid interfaces 1101; correspondingly, a number of groups of liquid channels are also provided; specifically, among the number of liquid interfaces 1101, there are two groups of coolant interfaces 1102 and two groups of hydraulic oil interfaces 1103. The two groups of coolant interfaces 1102 are respectively connected to the coolant input port and the coolant output port of the injection mold, and the two groups of hydraulic oil interfaces 1103 are respectively connected to the hydraulic drive input port and the hydraulic drive output port of the injection mold; the annular sleeve includes a first annular sleeve 1104 and a second annular sleeve 1105. The two groups of coolant interfaces 1102 are installed on the first annular sleeve 1104, and the two groups of hydraulic oil interfaces 1103 are installed on the second annular sleeve 1105. With such a setting, considering that two groups of coolant transportation channels need to be set up, one for inputting coolant into the injection mold and the other for outputting the coolant in the injection mold; similarly, two groups of hydraulic oil transportation channels need to be set up, one for inputting hydraulic oil into the injection mold and the other for returning the hydraulic oil in the injection mold. Therefore, multiple groups of liquid channels and liquid interfaces 1101 need to be set up to ensure that the input and output of coolant and hydraulic oil do not interfere with each other. At the same time, considering that the coolant output from the injection mold itself has a large amount of heat, and its heat transfer to the hydraulic oil through the flow distribution ring 11 will cause the hydraulic oil to heat up, which is not conducive to being the power source of the hydraulic drive device; therefore, the coolant interfaces 1102 and the hydraulic oil interfaces 1103 are respectively arranged on the first annular sleeve 1104 and the second annular sleeve 1105. Since the first annular sleeve 1104 and the second annular sleeve 1105 are separated from each other by a heat insulation ring 1106, the heat transfer of the coolant to the hydraulic oil is isolated.

[0050] Further, the flow distribution device 9 further includes an electric slip ring 12, and the electric slip ring 12 is sleeved on the outer side of the flow distribution seat 10; the electric slip ring 12 is used for electrically connecting with the power supply port of the injection mold; a second through-hole part 1005 is provided in the middle of the flow distribution seat 10, and the second through-hole part 1005 is used for a power supply line (not shown in the drawings) to pass through, so that the power supply end of the power supply line is electrically connected to the electric slip ring 12. With such a setting, the electric slip ring 12 is a kind of slip ring for conducting electricity, which is specifically used for transmitting power supply during unrestricted continuous rotation; the electric slip ring 12 is sleeved on the outer side of the flow distribution seat 10, and while the injection mold rotates, it is continuously powered through the electric slip ring 12, thus avoiding the power supply line from being wound and broken due to the rotational displacement of the injection mold; the power supply line for supplying power to the electric slip ring 12 is connected to an external power supply through the second through-hole part 1005 of the flow distribution seat 10, and the structure is simple and practical. Since the electric slip ring 12 belongs to the prior art, the specific structure thereof will not be described in detail in this application.

[0051] As a preferred solution of the above embodiment, refer to the attached Figure 1, the multi-material rotary injection molding machine further includes a material taking station 4, and at least two injection stations 3 and the material taking station 4 respectively correspond to an injection mold; when the rotating device 13 drives the injection mold to rotate to the material taking station 4, the injection molded product in the injection mold is taken out. With such a setting, when the injection mold is driven by the rotation of the turntable 2 to pass through at least two injection stations 3 in sequence, after injection molding of the injection mold by the plasticizing injection device 1, it is rotated to the material taking station 4, and the material taking operation of the injection molded product in the injection mold is completed at the material taking station 4. Since there are multiple injection molds arranged on the turntable 2, when one of the injection molds is taking out the material, the remaining injection molds are located at the injection stations 3 for injection molding; that is to say, during the process of taking out the injection molded product, multiple plasticizing injection devices 1 are still in working state, avoiding the plasticizing injection device 1 from being in a standby state; thus realizing the shortening of the molding cycle and improving the production efficiency of injection molding.

[0052] For the convenience of understanding, a dual-material rotary injection molding machine is taken as an example for description, that is, two plasticizing injection devices 1 are provided. Correspondingly, the injection stations 3 are set to two, and there are three groups of injection molds. For the convenience of distinction, the three groups of injection molds are respectively marked as injection mold A, injection mold B, and injection mold C; injection mold A is arranged at the 0-degree position of the turntable 2, injection mold B is arranged at the 120-degree position of the turntable 2, and injection mold C is arranged at the 240-degree position of the turntable 2; in the first working state, injection mold A is at the first injection station, injection mold B is at the second injection station, and injection mold C is at the material taking station 4; at this time, the first plasticizing injection device 1 injects and molds injection mold A. Since there is no initial injection in injection mold B at this time, the second plasticizing injection device 1 is temporarily in a standby state; in the second working state, the turntable 2 rotates 120 degrees so that injection mold A is at the second injection station, injection mold B is at the material taking station 4, and injection mold C is at the first injection station; at this time, the first plasticizing injection device 1 injects and molds injection mold C, and the second plasticizing injection device 1 injects and molds injection mold A; in the third working state, the turntable 2 rotates 120 degrees so that injection mold A is at the material taking station 4, injection mold B is at the first injection station, and injection mold C is at the second injection station; at this time, the first plasticizing injection device 1 injects and molds injection mold B, and the second plasticizing injection device 1 injects and molds injection mold C, and the operator takes out the injection molded product in injection mold A; and so on, repeating the process from the first working state to the third working state in a cycle.

[0053] Further, referring to the appendix Figure 2, a material taking station 4 is correspondingly provided with an ejecting device 6, and the ejecting device 6 is installed on a frame 5; the ejecting device 6 includes a plurality of ejector rods 601 and a telescopic driving device (not shown in the drawings), and the turntable 2 is provided with ejecting holes 202 for the ejector rods 601 to pass through; the telescopic driving device is used to drive the ejector rods 601 to pass through the ejecting holes 202 to drive the ejector pin module in the injection mold. With such a setting, considering that an ejector pin module is generally provided in an injection mold, the ejector pin module is used to separate the injection product in the injection mold from the mold cavity so that the operator can take it out. And the ejector pin mold needs to be driven by an external force; based on the above considerations, the present application provides the ejecting device 6 at the material taking station 4, and the telescopic driving device is used to drive the ejector rods 601 to pass through the ejecting holes 202 from below the turntable 2, so as to contact the injection mold located above the turntable 2 and drive its ejector pin module. It can be understood that when the turntable 2 rotates, the telescopic driving device retracts the ejector rods 601 below the turntable 2 to avoid the ejector rods 601 from hindering the rotation of the turntable 2.

[0054] As a preferred solution of the above embodiment, refer to the attached Figure 1 , the multi-material turntable type injection molding machine includes a mounting seat 7, and the mounting seat 7 is located above the injection station 3 of the turntable 2; the mounting seat 7 is used to mount the plasticizing injection device 1; the mounting seat 7 is fixedly connected to the frame 5 through at least two vertically arranged support columns 8. With such a setting, the mounting seat 7 is arranged above the injection station 3, and the plasticizing injection device 1 is mounted on the mounting seat 7. When the injection mold is injection molded, the plasticizing injection device 1 is driven to move downward to be connected to the injection mold, and the structure is simple and practical. Among them, the mounting seat 7 is fixedly connected to the frame 5 by at least two support columns 8 to ensure the stability of the mounting seat 7.

[0055] Furthermore, one of the at least two support columns 8 is located inside the ring of the turntable 2, and the remaining support columns 8 are located outside the ring of the turntable 2. A first through-hole portion 1001 is provided in the middle of the flow distribution seat 10, and the first through-hole portion 1001 is used for the support columns 8 to pass through. With such a setting, since the mounting seat 7 is located above the injection station 3, the support columns 8 are respectively arranged inside and outside the ring of the turntable 2 so that both the inside and outside of the ring of the turntable 2 of the mounting seat 7 can be effectively supported, which is beneficial to improving the stability of the mounting seat 7. The first through-hole portion 1001 is provided on the flow distribution seat 10 for the support columns 8 to pass through, so that the support columns 8 can be effectively connected to the frame 5.

[0056] Further, the mounting base 7 is triangular in structure; the support columns 8 are provided in three, and the three support columns 8 are respectively arranged at the three corner positions of the mounting base 7. With such an arrangement, by arranging the three support columns 8 at the three corner positions of the mounting base 7 respectively, the stability of the mounting base 7 is further improved. It should be noted that those skilled in the art can, on the basis of understanding the technical solution of the present application, set the mounting base 7 as a square structure and set the support columns 8 as four without creative efforts, and the four support columns 8 are respectively arranged at the four corner positions of the mounting base 7; this should also fall within the protection scope of the present application.

[0057] It should be noted that other contents of the multi-material rotary injection molding machine disclosed in the present invention are prior art and will not be elaborated herein.

[0058] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All those directly / indirectly applied in other related technical fields of the present invention are included in the patent protection scope of the present invention.

Claims

1. A multi-material turntable injection molding machine, characterized in that: include: frame; A turntable, the turntable is rotatably connected to the frame; A rotating device, the rotating device is used to drive the turntable to rotate so that the injection mold installed on the turntable passes through at least two injection stations; Among them, the turntable is annular in structure, and a flow distribution device is arranged on the inner side of the ring of the turntable, and the flow distribution device includes a flow distribution seat and a flow distribution ring, the flow distribution ring is movably sleeved on the outer side of the flow distribution seat, and the flow distribution ring and the flow distribution seat are sealed and connected to each other; the flow distribution ring is fixedly connected to the turntable so that the flow distribution ring can rotate synchronously with the turntable; the flow distribution seat is provided with a liquid channel, and the flow distribution ring is provided with a liquid interface, the first end of the liquid interface is communicated with the liquid channel, and the second end of the liquid interface is used to communicate with the corresponding port of the injection mold.

2. The multi-material rotary table injection molding machine according to claim 1, characterized in that: The liquid channel includes a first liquid channel and a second liquid channel which are interconnected, wherein the first liquid channel is arranged inside the distribution seat, and the second liquid channel is annularly surrounded by the annular outer side of the distribution seat and the second liquid channel is recessed; an end of the first liquid channel away from the second liquid channel is used to connect to an external liquid pipeline.

3. The multi-material rotary table injection molding machine according to claim 1, characterized in that: The flow distribution ring comprises a plurality of annular sleeves which are stacked and fixedly arranged, each of which is provided with the liquid interface; and a heat insulation ring is arranged between the adjacent annular sleeves.

4. The multi-material rotary table injection molding machine according to claim 3, characterized in that: The flow distribution device includes a plurality of liquid interfaces; specifically, the plurality of liquid interfaces include two groups of coolant interfaces and two groups of hydraulic oil interfaces; the annular sleeve includes a first annular sleeve and a second annular sleeve, the two groups of coolant interfaces are installed on the first annular sleeve, and the two groups of hydraulic oil interfaces are installed on the second annular sleeve.

5. The multi-material rotary table injection molding machine according to claim 1, characterized in that: A step portion is provided on the annular outer side of the distribution seat, and the step portion is used as a supporting surface of the distribution ring.

6. The multi-material rotary table injection molding machine according to claim 1, characterized in that: The current distribution device also includes an electric slip ring, which is sleeved on the outer side of the current distribution seat; the electric slip ring is used to be electrically connected to the power port of the injection mold; a second through hole portion is provided in the middle of the current distribution seat, and the second through hole portion is used for a power line to pass through, so that the power supply end of the power line is electrically connected to the electric slip ring.

7. The multi-material rotary table injection molding machine according to any one of claims 1 to 6, characterized in that: The multi-material turntable injection molding machine also includes a material taking station, and at least two of the injection stations and the material taking station each correspond to one of the injection molds; when the rotating device drives the injection mold to rotate to the material taking station, the injection molded product in the injection mold is taken out.

8. The multi-material rotary table injection molding machine according to claim 7, characterized in that: The material picking station is provided with an ejector device corresponding to the material picking station, and the ejector device is installed on the frame; the ejector device includes a plurality of ejector rods and a telescopic driving device, and the turntable is provided with an ejector hole for the ejector rod to pass through; the telescopic driving device is used to drive the ejector rod to pass through the ejector hole to drive the ejector module in the injection mold.

9. The multi-material rotary table injection molding machine according to any one of claims 1 to 6, characterized in that: The multi-material turntable injection molding machine includes a mounting seat, which is located above the injection station of the turntable; the mounting seat is used to install a plasticizing injection device; and the mounting seat is fixedly connected to the frame through at least two vertically arranged support columns.

10. The multi-material rotary table injection molding machine according to claim 9, characterized in that: One of the at least two support columns is located on the annular inner side of the turntable, and the other support columns are located on the annular outer side of the turntable; wherein a first through hole portion is provided in the middle of the distribution seat, and the first through hole portion is used for the support column to pass through.

Images