Multi-point dead angle free hot runner structure

Abstract

The utility model relates to hot runner system technical field, concretely disclose a multi-point type dead angle free hot runner structure. The multi-point type dead angle free hot runner structure includes the plate body, is provided with the flow circulation mechanism in the plate body, and the plate body top is provided with the mounting mechanism, and the mounting mechanism includes the placing groove, and the placing groove all is established in the both sides of plate body top, and the heating rod is inserted in the placing groove, and the both sides of heating rod are all fixedly connected with the supporting plate, and the both sides in supporting plate all are established with first limit slot, and the first limit slot is inserted with first limit board, and first limit board top fixedly connected with the support piece. The multi-point type dead angle free hot runner structure, through the " lead -out runner " of plate body bottom both sides, finally flows out hot runner, is transported to the multiple forming point (such as the multiple gate of mould) of downstream, realizes " multi-point type feeding " -that is through once introduction, completes the even feeding of multiple point, and whole process has no fluid stagnation dead angle, can avoid the phenomenon of plugging.

Description

Technical Field

[0001] This utility model relates to the field of hot runner system technology, and in particular to a multi-point hot runner structure without dead angles. Background Technology

[0002] "Injection molding" is a core manufacturing process for the efficient and mass production of plastic parts. It involves injecting molten plastic material into a closed mold cavity, which then cools and solidifies to obtain a finished product that conforms to the shape of the mold. Its applications cover almost all fields that use plastic parts, including electronics, automobiles, home appliances, medical devices, and daily necessities (such as mobile phone casings, car bumpers, home appliance casings, and plastic gears).

[0003] In precision manufacturing fields such as injection molding, multi-point, dead-angle-free hot runner structures are widely used in the production and processing of complex plastic parts due to their advantages in achieving uniform melt distribution and improving product quality. However, most of the heating rods currently configured within this structure adopt an integrated fixed design. While this design ensures heating stability under normal operating conditions, repair and replacement become problematic if the heating rods are damaged due to prolonged high-temperature operation, current fluctuations, or material aging. Because the heating rods are tightly fixed to the main hot runner structure, lacking convenient disassembly interfaces and independent installation modules, maintenance personnel often need to disassemble the entire hot runner system extensively. This not only consumes a significant amount of time removing surrounding components but may also cause accidental damage to the precision flow channels and seals inside the hot runner during disassembly, further extending equipment downtime, increasing production losses and maintenance costs, and causing great inconvenience to the company's continuous production operations. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-point, dead-angle-free hot runner structure to solve the problems mentioned in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A multi-point, dead-angle-free hot runner structure includes a plate body, a flow mechanism is provided inside the plate body, and an installation mechanism is provided on the top of the plate body;

[0007] The installation mechanism includes placement slots, each located on both sides of the top of the plate. A heating rod is inserted into each placement slot, and a support plate is fixedly connected to both sides of the heating rod. A first limiting slot is provided on both sides of each support plate, and a first limiting plate is inserted into each first limiting slot. A support member is fixedly connected to the top of the first limiting plate, and a support rod is slidably connected within the support member. A mounting bracket is fixedly connected to the middle of the surface of the support rod, and the mounting bracket is fixedly connected to the top of the plate.

[0008] Preferably, a spring is sleeved on the surface of the support rod. The spring is located between the mounting bracket and the support member. In its natural state, the spring generates a downward preload on the support member, causing the first limiting plate to press tightly against the support plate, ensuring that the heating rod is firmly inserted into the placement groove and preventing loosening.

[0009] Preferably, a positioning plate is fixedly connected to the top of the first limiting plate. When horizontal, the positioning plate is set on one side of the support plate. After the heating rod is installed in place, the positioning plate forms a "lateral block" from the side of the support plate to prevent the heating rod from shifting left or right due to mold vibration, fluid impact or thermal expansion and contraction.

[0010] Preferably, a fixing frame is fixedly connected to the top of the first limiting plate, a horizontal plate is slidably connected inside the fixing frame, a vertical plate is fixedly connected to the middle of the surface of the horizontal plate, and the vertical plate is fixedly connected to the top of the plate. When the first limiting plate needs to move due to spring extension or thermal deformation, the fixing frame will slide in a straight line along the horizontal plate to prevent the first limiting plate from tilting or shifting.

[0011] Preferably, a placement member is fixedly connected to the surface of the heating rod, and a second limiting groove is provided on both sides of the placement member. A second limiting plate is inserted into the second limiting groove. The second limiting plate is fixedly connected to the top of the plate. The insertion and engagement of the second limiting plate and the second limiting groove can prevent the heating rod from rotating circumferentially due to vibration or fluid impact during operation, and ensure that the heating element (such as the heating wire) of the heating rod always corresponds to the flow channel.

[0012] Preferably, the flow mechanism includes a second flow channel, which is opened on both sides of the plate body. The bottom sides of the plate body are provided with outlet channels. The second flow channel and the outlet channels are interconnected. Through the outlet channels at the bottom, the heated fluid is directly transported to multiple gates of the mold to meet the multi-point synchronous feeding requirements of multi-cavity or large plastic parts, while avoiding the fluid being exposed and cooled outside the plate body.

[0013] Preferably, a spherical diversion cavity is provided at the junction of the second flow channel and the outlet flow channel, a first flow channel is provided in the middle of the plate body, the first flow channel and the second flow channel are interconnected, an inlet flow channel is provided in the middle of the plate body, the inlet flow channel and the first flow channel are interconnected, the inlet flow channel is the inlet for the fluid to enter the hot flow channel, the first flow channel serves as the main passage, stably transporting the fluid to the second flow channels on both sides, realizing uniform diversion "from one to many", laying the foundation for "multi-point" feeding.

[0014] Compared with the prior art, this utility model provides a multi-point, dead-angle-free hot runner structure, which has the following beneficial effects:

[0015] 1. This multi-point hot runner structure with no dead angles allows the hot runner to flow out through the "outlet channels" on both sides of the bottom of the plate and be transported to multiple molding points downstream (such as multiple gates of the mold), realizing "multi-point feeding" - that is, by introducing the material once, the material can be uniformly supplied to multiple points, and there are no dead angles where the fluid stagnates throughout the process, which can avoid the phenomenon of material blockage.

[0016] 2. This multi-point, dead-angle-free hot runner structure, with its easily installed and disassembled heating rods, allows for timely replacement of damaged heating rods, facilitating easy replacement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the installation mechanism of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the circulation mechanism of this utility model;

[0020] Figure 4 This is a cross-sectional oblique view of the circulation mechanism of this utility model.

[0021] In the figure: 1-plate; 2-installation mechanism; 21-heating rod; 22-support plate; 23-first limiting plate; 24-fixed frame; 25-second limiting plate; 26-vertical plate; 27-positioning plate; 28-horizontal plate; 29-support component; 201-spring; 202-support rod; 203-installation frame; 204-placement component; 3-flow mechanism; 31-outlet channel; 32-spherical diversion cavity; 33-inlet channel; 34-first flow channel; 35-second flow channel. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 As shown, a multi-point, dead-angle-free hot runner structure includes a plate 1, a flow mechanism 3 inside the plate 1, and an installation mechanism 2 on the top of the plate 1. The installation mechanism 2 includes placement slots, which are opened on both sides of the top of the plate 1. A heating rod 21 is inserted into the placement slot, and a support plate 22 is fixedly connected to both sides of the heating rod 21. A first limiting slot is opened on both sides of the support plate 22, and a first limiting plate 23 is inserted into the first limiting slot. A support member 29 is fixedly connected to the top of the first limiting plate 23. A support rod 202 is slidably connected to the support member 29, and an installation bracket 203 is fixedly connected to the middle of the surface of the support rod 202. The installation bracket 203 is fixedly connected to the top of the plate 1.

[0024] Furthermore, a spring 201 is sleeved on the surface of the support rod 202. The spring 201 is located between the mounting bracket 203 and the support member 29. In its natural state, the spring 201 generates a downward preload on the support member 29, causing the first limiting plate 23 to press tightly against the support plate 22, ensuring that the heating rod 21 is firmly inserted into the placement groove and preventing it from loosening.

[0025] Furthermore, a positioning plate 27 is fixedly connected to the top of the first limiting plate 23. When horizontal, the positioning plate 27 is set on one side of the support plate 22. After the heating rod 21 is installed in place, the positioning plate 27 forms a "lateral block" from the side of the support plate 22 to prevent the heating rod 21 from shifting left or right due to mold vibration, fluid impact or thermal expansion and contraction.

[0026] Furthermore, a fixing frame 24 is fixedly connected to the top of the first limiting plate 23, and a horizontal plate 28 is slidably connected inside the fixing frame 24. A vertical plate 26 is fixedly connected to the middle of the surface of the horizontal plate 28, and the vertical plate 26 is fixedly connected to the top of the plate body 1. When the first limiting plate 23 needs to move due to the extension or thermal deformation of the spring 201, the fixing frame 24 will slide in a straight line along the horizontal plate 28 to prevent the first limiting plate 23 from tilting or shifting.

[0027] Furthermore, a placement member 204 is fixedly connected to the surface of the heating rod 21. The placement member 204 has a second limiting groove on both sides. A second limiting plate 25 is inserted into the second limiting groove and is fixedly connected to the top of the plate body 1. The insertion and engagement of the second limiting plate 25 with the second limiting groove can prevent the heating rod 21 from rotating circumferentially due to vibration or fluid impact during operation, and ensure that the heating element (such as the heating wire) of the heating rod 21 always corresponds to the flow channel.

[0028] Please see Figure 3-4 In this embodiment, the flow mechanism 3 includes a second flow channel 35, which is opened on both sides inside the plate 1; both sides of the bottom of the plate 1 are provided with outlet channels 31, and the second flow channel 35 and the outlet channels 31 are interconnected. Through the outlet channels 31 at the bottom, the heated fluid is directly transported to multiple gates of the mold to meet the multi-point synchronous feeding requirements of multi-cavity or large plastic parts, while avoiding the fluid being exposed and cooled outside the plate 1.

[0029] Furthermore, a spherical diversion cavity 32 is provided at the junction of the second flow channel 35 and the outlet flow channel 31. A first flow channel 34 is provided in the middle of the plate body 1. The first flow channel 34 and the second flow channel 35 are interconnected. An inlet flow channel 33 is provided in the middle of the plate body 1. The inlet flow channel 33 and the first flow channel 34 are interconnected. The inlet flow channel 33 is the inlet for the fluid to enter the hot flow channel. The first flow channel 34 serves as the main passage, stably transporting the fluid to the second flow channels 35 on both sides, realizing uniform diversion "from one to many", laying the foundation for "multi-point" feeding.

[0030] In actual operation, the high-temperature fluid (such as molten plastic) first enters the hot runner system through the "introduction channel 33" in the middle of plate 1. The introduction channel 33 is designed in the middle to ensure that the fluid path length and pressure on both sides are basically the same when the flow is subsequently split to both sides, avoiding one-sided flow deviation. After the fluid enters the introduction channel 33, it flows directly into the "first flow channel 34" (also located in the middle of plate 1) which is connected to it. The function of the first flow channel 34 is to "receive and redirect": to smoothly guide the axially entering fluid to the "second flow channels 35" on both sides of plate 1, avoiding turbulence or stagnation caused by sudden turning of the fluid. The fluid enters the "second flow channels 35" on both sides of plate 1 through the first flow channel 34. The fluid, originally concentrated in the middle, is divided into "left and right paths," completing the first "diversion." The second flow channel 35 is symmetrically opened on both sides of the plate 1 to ensure that the pressure and flow rate of the fluid in the left and right paths are consistent, laying the foundation for the "uniformity" of subsequent multi-point extraction. When the fluid flows from the second flow channel 35 to the "exit channel 31" at the bottom, it will pass through the "spherical diversion cavity 32." The fluid that has passed through the spherical diversion cavity 32 will finally flow out of the hot runner through the "exit channel 31" on both sides of the bottom of the plate 1 and be transported to multiple molding points downstream (such as multiple gates of the mold), realizing "multi-point feeding"—that is, by introducing the material once, the uniform feeding of multiple points is completed, and there are no dead corners where the fluid stagnates throughout the process, which can avoid the phenomenon of material blockage.

[0031] When the heating rod 21 needs to be installed, the support members 29 on both sides are pulled in a direction that brings them closer together. At this time, the first limiting plates 23 on both sides move in a direction that brings them closer together. Then, by placing the heating rod 21 into the corresponding placement groove, the second limiting plate 25 can be inserted into the corresponding second limiting groove, which can initially position the heating rod 21. Then, by loosening the support members 29, under the elastic potential energy of the spring 201, the first limiting plates 23 on both sides can be driven to move in a direction that moves away from each other and engage into their respective first limiting grooves, which can position the heating rod 21, thereby realizing the installation of the heating rod 21. As can be seen from the above principle, the heating rod 21 can be disassembled by repeating the opposite steps. By setting the heating rod 21 to be easy to install and disassemble, it can be disassembled and replaced in time when the heating rod 21 is damaged, which can facilitate replacement.

[0032] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A multi-point, dead-angle-free hot runner structure, comprising a plate (1), characterized in that, A flow mechanism (3) is provided inside the plate (1), and an installation mechanism (2) is provided on the top of the plate (1). The installation mechanism (2) includes a placement groove, which is opened on both sides of the top of the plate (1). A heating rod (21) is inserted into the placement groove. A support plate (22) is fixedly connected to both sides of the heating rod (21). A first limiting groove is opened on both sides of the support plate (22). A first limiting plate (23) is inserted into the first limiting groove. A support member (29) is fixedly connected to the top of the first limiting plate (23). A support rod (202) is slidably connected in the support member (29). A mounting bracket (203) is fixedly connected to the middle of the surface of the support rod (202). The mounting bracket (203) is fixedly connected to the top of the plate (1).

2. The multi-point, dead-angle-free hot runner structure according to claim 1, characterized in that, A spring (201) is sleeved on the surface of the support rod (202), and the spring (201) is disposed between the mounting bracket (203) and the support member (29).

3. The multi-point, dead-angle-free hot runner structure according to claim 1, characterized in that, The first limiting plate (23) is fixedly connected to a positioning plate (27) at the top. When horizontal, the positioning plate (27) is set on one side of the support plate (22).

4. The multi-point, dead-angle-free hot runner structure according to claim 1, characterized in that, The first limiting plate (23) is fixedly connected to a fixing frame (24) at the top. A horizontal plate (28) is slidably connected inside the fixing frame (24). A vertical plate (26) is fixedly connected to the middle of the surface of the horizontal plate (28). The vertical plate (26) is fixedly connected to the top of the plate body (1).

5. The multi-point, dead-angle-free hot runner structure according to claim 1, characterized in that, The heating rod (21) is fixedly connected to a placement component (204). The placement component (204) has a second limiting groove on both sides. A second limiting plate (25) is inserted into the second limiting groove. The second limiting plate (25) is fixedly connected to the top of the plate body (1).

6. The multi-point, dead-angle-free hot runner structure according to claim 1, characterized in that, The circulation mechanism (3) includes a second circulation channel (35), which is opened on both sides inside the plate (1). The bottom sides of the plate (1) are provided with outlet channels (31), and the second circulation channel (35) and outlet channels (31) communicate with each other.

7. A multi-point, dead-angle-free hot runner structure according to claim 6, characterized in that, A spherical diversion cavity (32) is provided at the junction of the second flow channel (35) and the outlet flow channel (31). A first flow channel (34) is provided in the middle of the plate body (1). The first flow channel (34) and the second flow channel (35) are interconnected. An inlet flow channel (33) is provided in the middle of the plate body (1). The inlet flow channel (33) and the first flow channel (34) are interconnected.

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