Rotary disk pipeline structure of injection molding machine

Abstract

The utility model discloses a rotary disk pipeline structure of an injection molding machine. The rotary disk pipeline structure comprises a rack, a rotary main shaft and a plurality of pipelines connected with the rotary main shaft, the plurality of pipelines are assembled on the drag chain structure, one end of the drag chain structure is relatively fixed on the inner wall of the rack, and the other end of the drag chain structure is fixedly connected with the rotary main shaft; when the rotary main shaft rotates in a reciprocating mode, the drag chain structure can drive the multiple pipelines to be wound around the rotary main shaft or unwound from the rotary main shaft. When the rotary main shaft does reciprocating rectilinear motion, the drag chain structure can drive the multiple pipelines to do synchronous reciprocating rectilinear motion. One end of the drag chain structure is fixed on the rotary main shaft, so that the drag chain structure can synchronously move along with the rotary main shaft, the pipelines are assembled on the drag chain structure, the pipelines are mutually independent and completely fixed in the drag chain, and in the process that the drag chain structure moves along with the rotary main shaft, the pipelines are not abraded, and the structural stability is good; the structural space occupancy rate in the vertical direction is low, and the overall height of the machine table can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a rotary disk pipeline structure of an injection molding machine. Background Art

[0002] The injection molding machine is the industrial mother machine of plastic molding machines. The horizontal through-shot injection molding machine is a special type of injection molding machine. Compared with the traditional vertical turntable multi-component injection molding machine, it has the advantages of large mold capacity and simple mold installation. Horizontal through-shot injection molding machines are widely used in the automotive industry for injection molding of interior and exterior trim, car lights and other products. The turntable piping system is a key component of the horizontal through-shot injection molding machine. It determines the number and diameter of the oil and water circuits of the center mold plate, as well as the overall height of the entire machine. The turntable piping system mainly completes the 0→180→0 horizontal rotational motion of the turntable mold wall and the linear motion of opening and closing the mold. These two compound motion processes ensure the smooth connection of electricity, oil, and water.

[0003] There are four main types of rotary disc piping systems for horizontal shot-to-shot injection molding machines on the market:

[0004] 1. The "rotating water jacket" + "double vertical drag chains in the linear direction of mold opening and closing" layout of the imported "E Factory" machine is the current mainstream structure, and many other domestic brands also use a similar structure; however, in this structure, the water jacket shaft and the rotary spindle are the same axis; the external transfer connection is simple, the structural space occupancy is moderate, the internal structure is relatively complex, the processing is difficult and costly, and the assembly fit tolerance requirements are high; there is a limit on the number of independent water and oil circuits; there are requirements for the overall height of the machine; if the passage inside the rotating water jacket is blocked by scale, maintenance requires the removal and cleaning of the entire water jacket (including the rotary spindle), which is costly and time-consuming; the two ends of the water jacket shaft need to be connected and transitioned with other pipes, which increases the connection points and the risk of oil leakage;

[0005] 2. The domestically produced machine "Mou Rui" features an "independent large pipeline semi-twisting structure" + "high-pressure, high-speed rotary joint" + "double vertical drag chains in the linear direction of mold opening and closing." While the external adapter connection is simple and the structural space occupied is moderate, each pipe requires a "high-pressure, high-speed rotary joint," which is expensive. Furthermore, the semi-twisting + rotary joint structure can easily loosen the locking nut during long-term use due to repeated twisting of the pipe, ultimately causing the pipe to fall off.

[0006] 3. The domestically produced "Fuqiangxin" machine features an "independent large-pipe rotary spindle" layout with dual vertical drag chains in the linear direction of mold opening and closing. External connections are complex, occupying a large structural space, and multiple sets of piping require organization, bundling, and securing. The piping is coiled around the spindle and rotates, causing friction between the coiled pipes and the inner wall of the machine, as well as between the pipes themselves. This makes the pipes less durable and prone to wear. The large pipes have a large bending radius, and the coiled structure occupies a large structural space, leaving little room for repairs and making maintenance inconvenient.

[0007] 4. The layout of a domestically produced machine, "someday," features a "self-contained large tube rotating into multiple sets of smaller tubes, which then rotate on the main axis and then rejoin" coupled with "double vertical drag chains in the linear direction of mold opening and closing." This layout results in complex external connections, a large structural footprint, and the multiple sets of pipes must be organized and bundled. The pipes are coiled around the main axis, rotating, causing friction between the coiled pipes and the machine's inner wall, as well as between each other. This makes the pipes less durable and prone to wear. The coiled pipe system also occupies a large structural footprint, leaving little room for repairs and inconvenient maintenance. Utility Model Content

[0008] (1) Technical issues to be resolved

[0009] The technical problem to be solved by the present invention is to provide a rotary disk piping structure for an injection molding machine, wherein one end of the drag chain structure is fixed on the rotary main shaft so that the drag chain structure can move synchronously with the rotary main shaft, and a plurality of pipelines are assembled on the drag chain structure so that the pipelines are independent of each other and completely fixed in the drag chain. In the process of the drag chain structure moving with the rotary main shaft, the pipelines will not be worn and the structural stability is good. At the same time, since the drag chain structure moves in the horizontal direction with the rotary main shaft, the structural space occupancy rate in the vertical direction is low, which can effectively reduce the overall height of the machine, thereby saving a lot of height structure materials and reducing the machine cost.

[0010] (2) Technical solution

[0011] The solution adopted by the present invention to solve the above-mentioned technical problems is a rotary disk pipeline structure of an injection molding machine, which includes a frame, a rotary spindle arranged in the frame, and a plurality of pipelines arranged in the frame and connected to the rotary spindle; the plurality of pipelines are assembled on a drag chain structure, and one end of the drag chain structure is relatively fixed to the inner wall of the frame, and the other end is fixedly connected to the rotary spindle; when the rotary spindle performs reciprocating rotational motion, the drag chain structure can drive the plurality of pipelines to be wound around the rotary spindle or unfolded from the rotary spindle; when the rotary spindle performs reciprocating linear motion, the drag chain structure can drive the plurality of pipelines to perform synchronous reciprocating linear motion.

[0012] Specifically, the rotary spindle can make a 0→180→0 reciprocating rotational motion around its own central axis to realize the 0→180→0 horizontal rotational motion of the turntable mold wall; the rotary spindle can make a reciprocating linear motion to realize the linear motion of opening and closing the turntable mold wall; and the above structure is adopted, one end of the drag chain structure is fixed on the rotary spindle, so that the drag chain structure can move synchronously with the rotary spindle, and multiple pipelines are assembled on the drag chain structure, so that the pipelines are independent of each other and completely fixed in the drag chain. In the process of the drag chain structure moving with the rotary spindle, the pipelines will not be worn and the structure has good stability; so that when the rotary spindle makes a 0→180→0 reciprocating rotational motion and a reciprocating linear motion, During the process, the pipeline and the rotary spindle can be kept unobstructedly connected; and since the above two movements can be completed by combining them on the drag chain structure, there is no need to use the rotating water jacket shaft technology, and there is no need to use the high-pressure and high-speed rotating structure, the cost can be greatly reduced; and multiple pipelines are assembled in the drag chain structure, the structure is simple, there is no multi-channel transition, most of them are mature products, the processing cost is low, the processing difficulty is low, there are few matching parts, the process requirements are simple, and the assembly and maintenance are convenient and simple; and since the drag chain structure is in the horizontal direction when it moves with the rotary spindle, the vertical structural space occupancy rate is low, which can effectively reduce the overall height of the machine, thereby saving a lot of height structure materials, reducing the machine cost, and can reduce the machine material cost by 25%.

[0013] In some embodiments, the rotary spindle can perform a composite motion of 0→180→0 reciprocating rotational motion and reciprocating linear motion around its own central axis.

[0014] In some embodiments, a linear rail arranged along the linear motion direction of the rotating spindle is provided in the frame, a linear rail fixing seat is slidably mounted on the linear rail, and the other end of the linear rail fixing seat is fixed to the drag chain structure.

[0015] By adopting the above solution, the sliding fit between the linear rail fixing seat and the linear rail can limit the drag chain structure from making linear reciprocating motion along the length direction of the linear rail when the main shaft makes linear motion, thereby limiting the movement of the drag chain structure.

[0016] In some embodiments, the linear rail fixing seat includes a linear rail sliding seat slidably mounted on the linear rail, and a drag chain fixing seat fixedly connected to one end of the linear rail sliding seat close to the drag chain structure; the drag chain fixing seat is fixedly mounted to the drag chain structure.

[0017] Specifically, the linear rail is arranged on the bottom wall of the frame, and is arranged opposite to the end of the drag chain structure away from the end thereof fixed on the inner wall of the frame.

[0018] In some embodiments, the drag chain structure includes a drag chain body, and a plurality of spaced-apart clamping plates for assembling a plurality of the pipelines are provided in the drag chain body along its length.

[0019] Specifically, the pipeline passes through all the clamps in sequence to achieve the fixation of the pipeline on the drag chain structure. The pipelines are independent of each other and completely fixed in the drag chain, without wear and tear, and have good structural stability. It is easy to install with few transitions and only requires the fixation of the two ends of the drag chain body.

[0020] In some embodiments, the drag chain body includes an upper cover plate and a lower cover plate, and a plurality of the clamping plates are arranged between the upper cover plate and the lower cover plate.

[0021] Specifically, the drag chain fixing seat includes a first fixing portion fixedly mounted on the outer wall of the linear rail sliding seat, and a second fixing portion and a third fixing portion formed by extending outward from the upper and lower ends of the first fixing portion; and the second fixing portion and the third fixing portion are respectively fixed on the upper cover plate and the lower cover plate to achieve a fixed connection between the drag chain body and the linear rail fixing seat, so that the rotary spindle can limit the linear motion direction of the drag chain structure when performing linear motion.

[0022] In some embodiments, the drag chain body is fixedly mounted on the rotating main shaft via a drag chain fixing frame; the drag chain fixing frame includes a fixing plate engaged with the rotating main shaft, and two connecting plates formed by extending downward from both ends of the fixing plate, and the other ends of the two connecting plates are fixedly connected to the drag chain body.

[0023] Specifically, the drag chain fixing frame is fixed on the rotary main shaft by screws, and the drag chain body is fixed on the drag chain fixing frame by screws, which is simple to install, has a large assembly and maintenance space, and is convenient to install.

[0024] In some embodiments, an open end is provided at one end of the drag chain body close to the rotating main shaft, so that the pipeline can pass through the open end and be connected to the rotating main shaft.

[0025] In some embodiments, a universal ball is provided at the bottom end of the drag chain body, and the universal ball is in contact with the bottom wall of the rack.

[0026] With the above solution, the setting of the universal ball supports the drag chain structure and makes the drag chain structure move more smoothly when performing synchronous movement with the rotating main shaft. It can also prevent the drag chain structure from directly rubbing against the inner wall of the frame and causing the mechanism to fail after wear.

[0027] (3) Beneficial effects

[0028] Compared with the prior art, the utility model designs the rotary disk pipeline structure of the injection molding machine.

[0029] (1) The utility model fixes one end of the drag chain structure on the rotating main shaft so that the drag chain structure can move synchronously with the rotating main shaft, and multiple pipelines are assembled on the drag chain structure so that the pipelines are independent of each other and completely fixed in the drag chain. In the process of the drag chain structure moving with the rotating main shaft, the pipelines will not be worn and the structure has good stability; so that in the process of the rotating main shaft making a 0→180→0 reciprocating rotation motion and a reciprocating linear motion, the pipelines and the rotating main shaft can be kept in smooth connection; and since the above two movements can be completed by combining them on the drag chain structure, there is no need for The use of rotating water-jacketed shaft technology eliminates the need for high-pressure, high-speed rotating structures, significantly reducing costs. Multiple pipelines are assembled within the drag chain structure, resulting in a simple structure without multiple transitions. Most products are mature, resulting in low processing costs and difficulty, fewer matching parts, simple process requirements, and easy assembly and maintenance. Because the drag chain structure moves horizontally with the rotating spindle, the vertical structural space occupancy is low, effectively reducing the overall height of the machine, thereby saving a lot of height structure materials and reducing machine costs, potentially reducing machine material costs by 25%.

[0030] (2) The present invention can restrict the drag chain structure from making linear reciprocating motion along the length direction of the linear rail when the drag chain structure makes linear motion along the rotating spindle through the sliding cooperation between the linear rail fixing seat and the linear rail, thereby restricting the movement of the drag chain structure;

[0031] (3) The drag chain fixing frame of the utility model is fixed on the rotating main shaft by screws, and the drag chain body is fixed on the drag chain fixing frame by screws, which is easy to install, has large assembly and maintenance space, and is easy to install;

[0032] (4) The utility model supports the drag chain structure through the setting of the universal ball, and makes the drag chain structure smoother when performing synchronous movement with the rotating main shaft. It can also prevent the drag chain structure from directly rubbing against the inner wall of the frame, causing the mechanism to fail after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the rotary disk pipeline structure of the injection molding machine of the utility model;

[0035] Figure 2This is a schematic structural diagram of the rotary disk piping structure of the injection molding machine of the present invention from another angle;

[0036] Figure 3 This is a schematic structural diagram of the rotary disk piping structure of the injection molding machine of the present invention from another angle;

[0037] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0038] The names of the components corresponding to the various figure marks in the figure are: 100, frame; 200, rotary spindle; 300, pipeline; 400, drag chain structure; 401, drag chain body; 4011, upper cover; 4012, lower cover; 4013, opening end; 402, splint; 500, linear rail; 600, linear rail fixing seat; 601, linear rail sliding seat; 602, drag chain fixing seat; 6021, first fixing part; 6022, second fixing part; 6023, third fixing part; 700, drag chain fixing frame; 701, fixing plate; 702, connecting plate; 800, universal ball. DETAILED DESCRIPTION

[0039] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0042] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0044] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0045] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0046] like Figures 1-4As shown, the utility model provides a rotary disk piping structure of an injection molding machine, comprising a frame 100, a rotary spindle 200 arranged in the frame 100, and a plurality of pipes 300 arranged in the frame 100 and connected to the rotary spindle 200; the plurality of pipes 300 are assembled on a drag chain structure 400, and one end of the drag chain structure 400 is relatively fixed to the inner wall of the frame 100, and the other end is fixedly connected to the rotary spindle 200; when the rotary spindle 200 performs reciprocating rotational motion, the drag chain structure 400 can drive the plurality of pipes 300 to be wound around the rotary spindle 200 or to be unfolded from the rotary spindle 200; when the rotary spindle 200 performs reciprocating linear motion, the drag chain structure 400 can drive the plurality of pipes 300 to perform synchronous reciprocating linear motion. Specifically, the rotary main shaft 200 can make a reciprocating rotational motion of 0→180→0 around its own central axis to realize the horizontal rotational motion of 0→180→0 of the turntable mold wall; the rotary main shaft 200 can make a reciprocating linear motion to realize the linear motion of opening and closing of the turntable mold wall; and the above structure is adopted, one end of the drag chain structure 400 is fixed on the rotary main shaft 200, so that the drag chain structure 400 can move synchronously with the rotary main shaft 200, and multiple pipelines 300 are assembled on the drag chain structure 400, so that the pipelines 300 are independent of each other and completely fixed in the drag chain. In the process of the drag chain structure 400 moving with the rotary main shaft 200, the pipelines 300 will not be worn and the structural stability is good; so that when the rotary main shaft 200 makes a reciprocating rotational motion of 0→180→0 During the process of dynamic and reciprocating linear motion, the pipeline 300 and the rotary main shaft 200 can be kept unobstructedly connected; and since the above two movements can be completed by combining them on the drag chain structure 400, there is no need to use the rotating water jacket shaft technology, and there is no need to use a high-pressure and high-speed rotating structure, and the cost can be greatly reduced; and multiple pipelines 300 are assembled in the drag chain structure 400, with a simple structure and no multi-channel transitions. Most of them are mature products with low processing cost and difficulty, few matching parts, simple process requirements, and convenient and simple assembly and maintenance; and since the drag chain structure 400 moves in the horizontal direction with the rotary main shaft 200, the vertical structural space occupancy rate is low, which can effectively reduce the overall height of the machine, thereby saving a lot of height structure materials, reducing machine costs, and can reduce machine material costs by 25%. In some embodiments, a linear rail 500 is provided within the frame 100 and arranged along the linear motion direction of the rotary spindle 200. A linear rail fixing seat 600 is slidably mounted on the linear rail 500, and the other end of the linear rail fixing seat 600 is fixed to the drag chain structure 400. With this solution, the sliding fit between the linear rail fixing seat 600 and the linear rail 500 can restrict the drag chain structure 400 from performing linear reciprocating motion along the length of the linear rail 500 when the rotary spindle 200 performs linear motion, thereby limiting the movement of the drag chain structure 400.

[0047] In some embodiments, the linear rail fixing base 600 includes a linear rail sliding base 601 slidably mounted on the linear rail 500, and a drag chain fixing base 602 fixedly connected to the end of the linear rail sliding base 601 proximal to the drag chain structure 400; the drag chain fixing base 602 is fixedly mounted to the drag chain structure 400. Specifically, the linear rail 500 is disposed on the bottom wall of the frame 100, and is located opposite the drag chain structure 400 at an end thereof, distal from the end thereof, which is fixed to the inner wall of the frame 100.

[0048] In some embodiments, the drag chain structure 400 includes a drag chain body 401, within which are disposed a plurality of spaced-apart clamps 402 along its length for assembling a plurality of the pipelines 300. Specifically, the pipelines 300 sequentially pass through all the clamps 402 to secure them to the drag chain structure 400. The pipelines are independently and completely secured within the drag chain, eliminating wear and providing excellent structural stability. Installation is simple, requiring minimal transitions, and only requires securing the two ends of the drag chain body 401. In some embodiments, the drag chain body 401 includes an upper cover plate 4011 and a lower cover plate 4012, with the plurality of clamps 402 disposed between the upper cover plate 4011 and the lower cover plate 4012. Specifically, the drag chain fixing seat 602 includes a first fixing portion 6021 fixedly installed on the outer wall of the linear rail sliding seat 601, and a second fixing portion 6022 and a third fixing portion 6023 formed by extending outward from the upper and lower ends of the first fixing portion 6021; and, the second fixing portion 6022 and the third fixing portion 6023 are respectively fixed on the upper cover plate 4011 and the lower cover plate 4012 to realize the fixed connection between the drag chain body 401 and the linear rail fixing seat 600, so that the rotary spindle 200 can limit the linear motion direction of the drag chain structure 400 when performing linear motion.

[0049] In some embodiments, the drag chain body 401 is fixedly mounted on the rotating spindle 200 via a drag chain fixing bracket 700. The drag chain fixing bracket 700 includes a fixing plate 701 that engages with the rotating spindle 200, and two connecting plates 702 extending downward from both ends of the fixing plate 701. The other ends of the two connecting plates 702 are fixedly connected to the drag chain body 401. Specifically, the drag chain fixing bracket 700 is screwed to the rotating spindle 200, and the drag chain body 401 is also screwed to the drag chain fixing bracket 700. This simplifies installation, provides ample assembly and maintenance space, and is convenient for installation.

[0050] In some embodiments, an open end 4013 is provided at one end of the drag chain body 401 close to the rotating main shaft 200 , so that the pipeline 300 can pass through the open end 4013 and be connected to the rotating main shaft 200 .

[0051] In some embodiments, a universal ball 800 is provided at the bottom end of the drag chain body 401, and the universal ball 800 contacts the bottom wall of the frame 100. With this solution, the universal ball 800 provides support for the drag chain structure 400, allowing the drag chain structure 400 to move more smoothly in sync with the rotating spindle 200. It also prevents the drag chain structure 400 from directly rubbing against the inner wall of the frame 100, which could cause wear and failure.

[0052] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0053] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. The rotary disk piping structure of the injection molding machine is characterized by: The invention comprises a frame (100), a rotary main shaft (200) arranged in the frame (100), and a plurality of pipelines (300) arranged in the frame (100) and connected to the rotary main shaft (200); the plurality of pipelines (300) are assembled on a drag chain structure (400), and one end of the drag chain structure (400) is relatively fixed to the inner wall of the frame (100), and the other end is fixedly connected to the rotary main shaft (200); when the rotary main shaft (200) performs reciprocating rotational motion, the drag chain structure (400) can drive the plurality of pipelines (300) to be wound around the rotary main shaft (200) or to be unfolded from the rotary main shaft (200); when the rotary main shaft (200) performs reciprocating linear motion, the drag chain structure (400) can drive the plurality of pipelines (300) to perform synchronous reciprocating linear motion.

2. The rotary disk piping structure of the injection molding machine according to claim 1, characterized in that: A linear rail (500) is provided in the frame (100) and is arranged along the linear motion direction of the rotary main shaft (200). A linear rail fixing seat (600) is slidably mounted on the linear rail (500), and the other end of the linear rail fixing seat (600) is fixed to the drag chain structure (400).

3. The rotary disk piping structure of the injection molding machine according to claim 2, characterized in that: The linear rail fixing seat (600) comprises a linear rail sliding seat (601) slidably mounted on the linear rail (500), and a drag chain fixing seat (602) fixedly connected to one end of the linear rail sliding seat (601) close to the drag chain structure (400); the drag chain fixing seat (602) is fixedly mounted on the drag chain structure (400).

4. The rotary disk piping structure of the injection molding machine according to claim 1, characterized in that: The drag chain structure (400) comprises a drag chain body (401), wherein a plurality of spaced-apart clamping plates (402) for assembling a plurality of pipelines (300) are provided in the drag chain body (401) along its length direction.

5. The rotary disk piping structure of the injection molding machine according to claim 4, characterized in that: The drag chain body (401) comprises an upper cover plate (4011) and a lower cover plate (4012), and a plurality of clamping plates (402) are arranged between the upper cover plate (4011) and the lower cover plate (4012).

6. The rotary disk piping structure of the injection molding machine according to claim 4, characterized in that: The drag chain body (401) is fixedly mounted on the rotary main shaft (200) via a drag chain fixing frame (700); the drag chain fixing frame (700) comprises a fixing plate (701) engaged on the rotary main shaft (200), and two connecting plates (702) formed by extending downward from both ends of the fixing plate (701), and the other ends of the two connecting plates (702) are fixedly connected to the drag chain body (401).

7. The rotary disk piping structure of the injection molding machine according to claim 4, characterized in that: An open end (4013) is provided at one end of the drag chain body (401) close to the rotating main shaft (200), so that the pipeline (300) can pass through the open end (4013) and be connected to the rotating main shaft (200).

8. The rotary disk piping structure of the injection molding machine according to claim 4, characterized in that: A universal ball (800) is provided at the bottom end of the drag chain body (401), and the universal ball (800) is in contact with the bottom wall of the frame (100).

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