An electric injection molding machine accumulator temperature equalization device

Abstract

The utility model relates to electric injection molding machine storage cylinder technical field, and disclose a kind of electric injection molding machine storage cylinder temperature balancing device, including outer tube and inner tube, the bottom fixed mounting of outer tube has discharge hopper, by setting the even temperature plate in the group in the circumferential direction of inner tube outer wall, and in the middle of each group even temperature plate, corresponding ceramic heating ring is set, heat generated by ceramic heating ring is first transferred to even temperature plate, even temperature plate inside honeycomb capillary core structure cooperate low-boiling point phase change working medium, heat is quickly and evenly conducted to inner tube outer wall by the circulation heat transfer path of "evaporation-condensation-reflux", again by temperature controller real-time monitoring and adjusting the power of corresponding ceramic heating ring, ensure that the temperature of each area of inner tube is stably in set range, guarantee the plasticizing quality of plastic melt, avoid product to appear bubble, shrinkage, dimensional deviation and other defects due to temperature imbalance, significantly improve the qualified rate and quality stability of product in precision injection molding production.

Description

Technical Field

[0001] This utility model relates to the field of electric injection molding machine storage cylinder technology, and in particular to a temperature balancing device for electric injection molding machine storage cylinder. Background Technology

[0002] In the fields of plastics processing and intelligent manufacturing, electric injection molding machines have become core equipment for large-scale production in industries such as automotive parts, electronics, and daily necessities due to their advantages of low energy consumption, high control precision, and strong operational stability. They heat and plasticize plastic granules in a storage cylinder through screw rotation, forming a melt that is then injected into the mold for shaping. As the core carrier for heating and plasticizing, the uniformity of the internal temperature of the storage cylinder directly determines the quality of the melt—temperature imbalance can lead to overheating and degradation of the melt or insufficient plasticization, causing defects such as bubbles and shrinkage marks in the finished product. Therefore, the temperature control capability of the storage cylinder is a key factor in evaluating the performance of an electric injection molding machine. In the field of precision injection molding, its temperature balancing device has an even more direct impact on production efficiency and product quality. Currently, most mainstream electric injection molding machine cylinder temperature control solutions employ an integral heating ring (such as a resistance or cast aluminum heating ring) fitted onto the outer cylinder wall, combined with an outer insulation layer to maintain temperature. While this solution can meet basic heating and low-to-medium precision production needs, it has significant shortcomings in temperature uniformity, flexibility of local adjustment, and structural adaptability, making it difficult to meet the stringent melt quality requirements of precision injection molding. In existing technologies, the integral heating ring is designed to be a seamless, one-piece design. When heat is conducted from the outer cylinder wall to the inner cylinder and the material, the difference in cylinder wall thickness and the deviation in heating ring power can easily cause significant temperature differences around the circumference of the storage cylinder. This can lead to localized overheating or lack of plasticization of the material. Furthermore, the heating ring cannot adjust the local temperature difference individually; it can only raise or lower the temperature as a whole, which exacerbates the temperature imbalance. In addition, the outer cylinder and the insulation layer are mostly fixedly bonded or rigidly bolted. When the storage cylinder expands and contracts with temperature, the insulation layer cannot adapt itself, which can easily create gaps and cause heat loss. This increases energy consumption and exacerbates temperature fluctuations. Moreover, the fixed connection requires the disassembly of a large number of components for subsequent maintenance, which affects the continuous operation of the production line. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a temperature balancing device for the storage cylinder of an electric injection molding machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a temperature balancing device for a storage cylinder of an electric injection molding machine, comprising an outer cylinder and an inner cylinder, wherein a discharge hopper is fixedly installed at the bottom of the outer cylinder, and a bottom plate is fixedly installed at the upper end of the inner wall of the discharge hopper, wherein a plurality of extrusion holes are evenly opened on the surface of the bottom plate, and six temperature equalization plates are distributed circumferentially on the outer wall of the inner cylinder, wherein the six temperature equalization plates are grouped together, and four groups of temperature equalization plates are evenly arranged on the outer wall of the inner cylinder; Four ceramic heating rings are fixedly installed on the inner wall of the outer cylinder. The four ceramic heating rings are distributed in the middle of each group of temperature equalization plates and are sleeved on the outer side of the inner cylinder. A temperature controller is fixedly installed on the side of each ceramic heating ring. The temperature controller extends through to the outer side of the outer cylinder. A fitting block is fixedly installed at each of the four corners of the temperature equalization plate. A bending plate is fixedly installed on the surface of the fitting block. A lower pipe clamp is fixedly installed at the bottom of the other end of the bending plate. An upper pipe clamp is hinged to the upper end of the lower pipe clamp. A limit block is fixedly installed on the inner side of the upper pipe clamp.

[0005] Preferably, multiple connecting columns are uniformly fixedly installed on the inner wall of the outer cylinder. The connecting columns are in groups of four, and each group of connecting columns corresponds to the four corners of the temperature equalization plate. The surface of the connecting columns is provided with a slot that matches the limiting block.

[0006] Preferably, a hinge is fixedly connected to one side of the lower pipe clamp, and the lower pipe clamp is hinged to the upper pipe clamp via the hinge. A connecting screw is internally threaded at the connection point of the lower pipe clamp and the upper pipe clamp on the side away from the hinge.

[0007] Preferably, the upper pipe clamp is detachably connected to the lower pipe clamp via connecting screws, and the bending plate is a continuously bent shape and is made of spring steel.

[0008] Preferably, the side of the heat spreader away from the bending plate is closely attached to the outer wall of the inner cylinder, and the interior of the heat spreader is designed with a honeycomb capillary core structure and filled with a low-boiling-point phase change working fluid.

[0009] Preferably, the temperature controller is a CHB402 intelligent temperature controller, and the temperature controller is electrically connected to the ceramic heating ring via a wire.

[0010] Preferably, the upper end of the outer cylinder is provided with two suction pipes, the top of which is connected to a negative pressure suction chamber integrated inside the top of the outer cylinder.

[0011] Preferably, the inner cylinder is provided with a spiral stirring rod on its inner side, and the outer cylinder is equipped with a stirring motor at its top. The output end of the stirring motor is connected to the top of the spiral stirring rod through a coupling.

[0012] In summary, this utility model has the following beneficial effects: 1. This utility model sets up temperature equalization plates in groups around the outer wall of the inner cylinder, and sets up ceramic heating rings in the middle of each group of temperature equalization plates. The heat generated by the ceramic heating rings is first transferred to the temperature equalization plates. The honeycomb capillary core structure inside the temperature equalization plates, combined with a low boiling point phase change working fluid, conducts the heat quickly and evenly to the outer wall of the inner cylinder through the "evaporation-condensation-reflux" circulating heat transfer path. Then, the temperature controller monitors and adjusts the power of the corresponding ceramic heating rings in real time to ensure that the temperature of each area of ​​the inner cylinder is stable within the set range, which ensures the plasticizing quality of the plastic melt and avoids defects such as bubbles, shrinkage marks, and dimensional deviations in the products due to temperature imbalance. It significantly improves the pass rate and quality stability of products in precision injection molding production. 2. This utility model, by setting bending plates at the four corners of the temperature equalization plate, allows the bending plates made of spring steel to adaptively compensate for the deformation difference between the inner and outer cylinders when the storage cylinder expands and contracts due to temperature changes. This keeps the temperature equalization plate pressed tightly against the outer wall of the inner cylinder, while avoiding gaps caused by deformation in traditional rigid connections. This reduces heating energy consumption, avoids energy waste caused by continuous high-power operation of the heating ring, and prevents temperature fluctuations caused by heat loss at the gaps. This further ensures the temperature balance of the storage cylinder and extends the service life of the heating components. 3. This utility model uses a hinge to connect the lower and upper pipe clamps, and a connecting screw to achieve a detachable connection. This allows the heat spreader plate to form a modular assembly structure with the bending plate, pipe clamps, and connecting column. When maintenance or replacement of the heat spreader plate or ceramic heating ring is required, the operator only needs to unscrew the connecting screws and open the upper pipe clamp to separate the heat spreader plate from the connecting column. There is no need to disassemble the entire outer cylinder or a large number of parts, which significantly improves the convenience of equipment operation and maintenance, shortens maintenance time, ensures the continuous operation efficiency of the electric injection molding machine production line, and reduces the risk of damage to other components during maintenance, thereby improving the overall economic efficiency and practicality of the device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the overall central cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the upper structure of the inner cylinder of this utility model; Figure 4 This is a schematic diagram of the overall top view structure of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the outer structure of the temperature distribution plate of this utility model; Figure 7 This utility model Figure 6Enlarged structural diagram at point A in the middle.

[0014] Figure label: 1. Outer cylinder; 101. Inner cylinder; 102. Discharge hopper; 2. Suction pipe; 3. Stirring motor; 301. Spiral stirring rod; 4. Base plate; 401. Extrusion hole; 5. Ceramic heating ring; 501. Thermostat; 6. Heat spreader; 7. Fitting block; 701. Bending plate; 702. Lower pipe clamp; 703. Hinge; 704. Upper pipe clamp; 705. Limiting block; 706. Connecting screw; 8. Connecting post; 801. Slot. Detailed Implementation

[0015] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings: Example: Reference Figures 1-7 A temperature balancing device for the storage cylinder of an electric injection molding machine includes an outer cylinder 1 and an inner cylinder 101. A discharge hopper 102 is fixedly installed at the bottom of the outer cylinder 1, and the upper end of the outer cylinder 1 is a detachable cover structure, which facilitates maintenance of the internal structure. A bottom plate 4 is fixedly installed on the upper end of the inner wall of the discharge hopper 102. Multiple extrusion holes 401 are evenly opened on the surface of the bottom plate 4. Six temperature equalization plates 6 are distributed circumferentially on the outer wall of the inner cylinder 101. The six temperature equalization plates 6 are grouped into a group, and four groups of temperature equalization plates 6 are evenly arranged on the outer wall of the inner cylinder 101. Four ceramic heating rings 5 ​​are fixedly installed on the inner wall of the outer cylinder 1. The four ceramic heating rings 5 ​​are distributed in the middle of each group of temperature equalization plates 6 and are sleeved on the outer side of the inner cylinder 101. A temperature controller 501 is fixedly installed on the side of the ceramic heating ring 5. The temperature controller 501 extends through to the outer side of the outer cylinder 1. A fitting block 7 is fixedly installed at each of the four corners of the temperature equalization plate 6. A bending plate 701 is fixedly installed on the surface of the fitting block 7. A lower pipe clamp 702 is fixedly installed at the bottom of the other end of the bending plate 701. An upper pipe clamp 704 is hinged to the upper end of the lower pipe clamp 702. A limit block 705 is fixedly installed on the inner side of the upper pipe clamp 704.

[0017] Specifically: In actual use, the double-layer structure formed by the outer cylinder 1 and the inner cylinder 101 not only ensures the stability of the plasticizing process, but also reserves reasonable space for the layout of the temperature balancing components. The detachable cover plate structure at the top of the outer cylinder 1 is designed for the maintenance needs of the internal components. When it is necessary to inspect the temperature equalization plate 6 and the ceramic heating ring 5, it is not necessary to disassemble the entire outer cylinder 1. Only the cover plate needs to be removed for operation, which greatly improves the convenience of maintenance and ensures the long-term stable operation of the device.

[0018] Multiple sets of heat spreaders 6 and ceramic heating rings 5 ​​on the inner wall of the outer cylinder 1 are used. The temperature controller 501 monitors the temperature of the corresponding area in real time and adjusts the heating power of the ceramic heating rings 5 ​​through wires. The ceramic heating rings 5 ​​transfer heat to the heat spreaders 6. The heat spreaders 6, with their internal structure, evenly diffuse the concentrated heat to the entire outer wall of the inner cylinder 101, avoiding local temperature differences in the inner cylinder 101 caused by direct heating of a single heating component. This ensures that the overall temperature of the inner cylinder 101 is stable within the preset range, providing temperature protection for the uniform plasticization of plastic particles and solving the temperature imbalance problem that is prone to occur in traditional integral heating.

[0019] The lower pipe clamp 702 at the bottom of the bent plate 701 and the upper pipe clamp 704 hinged at the top form an openable clamping structure. Combined with the limiting block 705 on the inner side of the upper pipe clamp 704, it can precisely fit and fix with the connecting post 8 on the inner wall of the outer cylinder 1. When the pipe clamp is closed, the limiting block 705 is embedded in the slot 801 of the connecting post 8, achieving a stable installation of the heat equalization plate 6 between the inner and outer cylinders 1. During operation, when the inner cylinder 101 expands and contracts due to heating, the bent plate 701 adapts to its own elasticity, constantly pushing the heat equalization plate 6 tightly against the outer wall of the inner cylinder 101. This avoids gaps caused by deformation, which could reduce heat transfer efficiency and further ensure stable temperature balance, guaranteeing continuous and uniform heat transfer to the material inside the inner cylinder 101.

[0020] Multiple connecting columns 8 are evenly fixedly installed on the inner wall of the outer cylinder 1. The connecting columns 8 are in groups of four, and each group of connecting columns 8 corresponds to the four corners of the temperature equalization plate 6. The surface of the connecting column 8 is provided with a slot 801 that matches the limiting block 705. A hinge 703 is fixedly connected to one side of the lower pipe clamp 702. The lower pipe clamp 702 is hinged to the upper pipe clamp 704 through the hinge 703. A connecting screw 706 is internally threaded at the connection point of the lower pipe clamp 702 and the upper pipe clamp 704 away from the hinge 703. The upper pipe clamp 704 is detachably connected to the lower pipe clamp 702 through the connecting screw 706. The bending plate 701 is a continuously bent shape and is made of spring steel. Specifically: In actual use, the groove 801 on the surface of the connecting column 8 is adapted to the inner limiting block 705 of the upper pipe clamp 704. The temperature distribution plate 6 is stably fixed through structural interlocking, preventing the temperature distribution plate 6 from shifting due to vibration or deformation of the inner cylinder 101. This ensures that the temperature distribution plate 6 is in close contact with the outer wall of the inner cylinder 101. The hinge 703 on one side of the lower pipe clamp 702 allows the upper pipe clamp 704 to open and close flexibly, facilitating the fitting of the pipe clamp onto the connecting column 8. When the connecting screw 706 is tightened, the pipe clamp tightly wraps around the connecting column 8, and the limiting block 705 is embedded in the groove 801 for fixation. During disassembly, the temperature distribution plate 6 and the connecting column 8 can be separated by opening the upper pipe clamp 704, simplifying maintenance operations.

[0021] The continuously bent spring steel plate 701 combines elasticity and support. During operation, the thermal expansion and contraction of the inner cylinder 101 causes changes in the distance between the inner and outer cylinders 1. The bending plate 701 compensates for the distance through its own deformation and continuously applies a pushing force towards the inner cylinder 101 to the heat equalization plate 6, ensuring that the heat equalization plate 6 is always in close contact with the inner cylinder 101, avoiding heat conduction loss. Moreover, the spring steel material ensures that it is not easily damaged during long-term use.

[0022] The side of the heat spreader 6 away from the bending plate 701 is closely attached to the outer wall of the inner cylinder 101. The interior of the heat spreader 6 is designed with a honeycomb capillary core structure and filled with a low-boiling-point phase change working fluid. The heat from the ceramic heating ring 5 is transferred to the heat spreader 6. The low-boiling-point phase change working fluid evaporates rapidly into a gaseous state upon heating. The gaseous working fluid diffuses to all areas of the heat spreader 6 under the guidance of the honeycomb capillary core. After contacting the low-temperature area, it condenses into a liquid state and then flows back to the heat absorption area through the capillary force, so as to evenly distribute the concentrated heat to the entire area of ​​the heat spreader 6, avoid local temperature differences in the inner cylinder 101, and ensure the overall temperature balance of the inner cylinder 101. The temperature controller 501 is a CHB402 type intelligent temperature controller, and the temperature controller 501 is electrically connected to the ceramic heating ring 5 through a wire. It automatically adjusts the heating ring power according to the preset temperature requirements. When the monitored temperature is lower than the set value, the heating power is increased to supplement the heat; when it is higher than the set value, the power is reduced to reduce the heat output, thus accurately controlling the heat supply of the ceramic heating ring 5. Two suction pipes 2 are provided at the upper end of the outer cylinder 1. The top of the suction pipes 2 is connected to the negative pressure suction chamber integrated inside the top of the outer cylinder 1. This structure is a mature existing technology known to those skilled in the art, so it will not be described in detail. A spiral stirring rod 301 is provided on the inner side of the inner cylinder 101. A stirring motor 3 is installed on the top of the outer cylinder 1. The output end of the stirring motor 3 is connected to the top of the spiral stirring rod 301 through a coupling. After the stirring motor 3 is started, the rotational power can be stably transmitted to the spiral stirring rod 301 through the coupling, driving the stirring rod to rotate synchronously. The spiral blades of the stirring rod can not only continuously push the particles in the pre-stored area to the heating and plasticizing zone of the inner cylinder 101, but also disperse the aggregated particles through the contact friction between the blades and the particles, avoiding uneven heating due to particle accumulation, thus laying the foundation for temperature balance and uniform plasticization of the material in the inner cylinder 101.

[0023] The working principle of this utility model is as follows: In specific use, the device is first started. The external feeding device cooperates with the negative pressure suction chamber integrated inside the outer cylinder 1 through the suction pipe 2 at the upper end of the outer cylinder 1. Under the action of negative pressure, the plastic particles are stably transported to the inside of the inner cylinder 101. At the same time, the stirring motor 3 at the top of the outer cylinder 1 is started. The output end of the stirring motor 3 drives the spiral stirring rod 301 inside the inner cylinder 101 to rotate through the coupling. At this time, the spiral stirring rod 301 rotates in the forward direction. Its spiral blades generate a pushing force towards the discharge hopper 102 along the axis of the inner cylinder 101. This can continuously and evenly transport the plastic particles in the pre-stored area to the heating and plasticizing area inside the inner cylinder 101. During the pushing process, the spiral blades can also form a stirring and dispersing effect on the plastic particles, avoiding local accumulation of particles in the conveying path, and providing a uniform material basis for subsequent heating and plasticizing.

[0024] Subsequently, the ceramic heating ring 5 installed on the inner wall of the outer cylinder 1 is activated, and the temperature controller 501 starts working, monitoring the temperature data of the ceramic heating ring 5 and the surrounding area of ​​the inner cylinder 101 in real time. According to the preset plasticizing temperature requirements, the heating power of the ceramic heating ring 5 is adjusted through the wires. The heat generated by the ceramic heating ring 5 is transferred to the heat spreader 6 on the outside of the inner cylinder 101 at the sleeve position. Since the heat spreader 6 is designed with a honeycomb capillary core structure and filled with a low-boiling-point phase change working fluid, the working fluid absorbs heat and quickly evaporates into a gaseous state. It diffuses into the lower temperature area inside the heat spreader 6, and condenses into a liquid state after contacting the low temperature area. The liquid working fluid then flows back to the heat absorption area through the capillary force of the honeycomb capillary core, forming a circulating heat transfer path. This quickly and evenly conducts the heat of the ceramic heating ring 5 to the outer wall of the inner cylinder 101, thereby making the plastic particles inside the inner cylinder 101 heated evenly and avoiding local overheating or insufficient plasticizing.

[0025] During this process, if the plastic particles in the inner cylinder 101 experience local bridging or clumping, the spiral stirring rod 301 can be controlled to rotate in the opposite direction. Its spiral blades generate a force opposite to the forward direction, which can break the clumping structure of the particles and disperse the clumped particles into a loose state, ensuring that the material conveying channel is unobstructed. The continuous bent spring steel bending plate 701 connected by the four corners of the temperature equalization plate 6 through the fitting block 7 will adapt to the thermal expansion and contraction of the inner cylinder 101 due to heating and undergo elastic deformation. With the assembly structure of the lower pipe clamp 702, the upper pipe clamp 704 and the connecting column 8 of the inner wall of the outer cylinder 1, the temperature equalization plate 6 is always pushed to stick tightly to the outer wall of the inner cylinder 101 to ensure heat conduction efficiency.

[0026] If maintenance is required on the heat exchange plate 6 or the ceramic heating ring 5, simply unscrew the connecting screw 706 at the connection between the lower pipe clamp 702 and the upper pipe clamp 704, open the upper pipe clamp 704 through the hinge 703, and disengage the limiting block 705 on the inner side of the upper pipe clamp 704 from the slot 801 on the surface of the connecting column 8. The heat exchange plate 6 can then be removed from the inner side of the outer cylinder 1. After maintenance, the reverse operation can be performed to reassemble the device, ensuring long-term stable operation of the device.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A temperature balancing device for a storage cylinder of an electric injection molding machine, comprising an outer cylinder (1) and an inner cylinder (101), characterized in that: The bottom of the outer cylinder (1) is fixedly installed with a discharge hopper (102), and the upper end of the inner wall of the discharge hopper (102) is fixedly installed with a bottom plate (4). The surface of the bottom plate (4) is evenly provided with a plurality of extrusion holes (401). The outer wall of the inner cylinder (101) is circumferentially distributed with six temperature equalization plates (6). The temperature equalization plates (6) are in groups of six, and four groups of temperature equalization plates (6) are evenly provided on the outer wall of the inner cylinder (101). Four ceramic heating rings (5) are fixedly installed on the inner wall of the outer cylinder (1). The four ceramic heating rings (5) are distributed in the middle of each set of temperature equalization plates (6) and sleeved on the outside of the inner cylinder (101). A temperature controller (501) is fixedly installed on the side of the ceramic heating ring (5). The temperature controller (501) extends through to the outside of the outer cylinder (1). A fitting block (7) is fixedly installed at each of the four corners of the temperature equalization plate (6). A bending plate (701) is fixedly installed on the surface of the fitting block (7). A lower pipe clamp (702) is fixedly installed at the bottom of the other end of the bending plate (701). An upper pipe clamp (704) is hinged to the upper end of the lower pipe clamp (702). A limit block (705) is fixedly installed on the inner side of the upper pipe clamp (704).

2. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The inner wall of the outer cylinder (1) is uniformly fixed with multiple connecting columns (8). The connecting columns (8) are in groups of four, and each group of connecting columns (8) corresponds to the four corners of the temperature equalization plate (6). The surface of the connecting column (8) is provided with a slot (801) that is compatible with the limiting block (705).

3. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: A hinge (703) is fixedly connected to one side of the lower pipe clamp (702). The lower pipe clamp (702) is hinged to the upper pipe clamp (704) through the hinge (703). A connecting screw (706) is internally threaded at the connection point of the lower pipe clamp (702) and the upper pipe clamp (704) away from the hinge (703).

4. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The upper pipe clamp (704) is detachably connected to the lower pipe clamp (702) by a connecting screw (706), and the bending plate (701) is a continuously bent shape and is made of spring steel.

5. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The side of the heat spreader (6) away from the bending plate (701) is closely attached to the outer wall of the inner cylinder (101). The interior of the heat spreader (6) is designed with a honeycomb capillary core structure and is filled with a low-boiling-point phase change working fluid.

6. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The temperature controller (501) is a CHB402 intelligent temperature controller, and the temperature controller (501) is electrically connected to the ceramic heating ring (5) via a wire.

7. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The upper end of the outer cylinder (1) is provided with two suction pipes (2), and the top of the suction pipes (2) is connected to the negative pressure suction chamber integrated inside the top of the outer cylinder (1).

8. The temperature balancing device for the storage cylinder of an electric injection molding machine according to claim 1, characterized in that: The inner cylinder (101) is provided with a spiral stirring rod (301) on its inner side, and a stirring motor (3) is installed on the top of the outer cylinder (1). The output end of the stirring motor (3) is connected to the top of the spiral stirring rod (301) through a coupling.

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