Injection mold for heating sprue

Abstract

The utility model discloses an injection mold for heating a sprue, which comprises a lower mold and an upper mold, and the lower mold and the upper mold are assembled to form a cavity for injection molding; the injection molding channel is arranged in the lower mold and is communicated with the cavity; the heating device is provided with a heating nozzle, the heating device is arranged in the lower mold, and the heating device is used for heating the injection molding channel. According to the mold, the injection molding channel and the heating device of the mold are arranged in the lower mold, so that when products with high appearance requirements, such as a projector shell, are produced, the influence of the sprue position on the appearance can be avoided, and the potential damage to the product appearance during demolding is reduced; in addition, the mold can also ensure that the injection molding material keeps proper flowability before being injected into the cavity, the problems that the material is cooled too fast and solidified unevenly in the injection molding process, and a pouring gate is solidified and difficult to demold due to too fast cooling in the demolding process are solved, and therefore the injection molding efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of film and television equipment production, and relates to an injection mold with a heated gate. Background Art

[0002] In the field of injection molding technology, especially for the production of projector housings, traditional injection molds have some technical challenges and limitations. The gate of the projector housing injection mold currently on the market is usually set on the appearance of the shell, which not only affects the appearance quality of the product, but also damages the appearance of the shell during demolding. If injection molding is performed from the lower mold, that is, the gate is set on the inner side of the shell, although the smoothness of the outer surface of the shell is ensured, the problem of the gate being too long will arise. A gate that is too long will increase the resistance to material flow, which will cause damage to the product during demolding, affecting the overall injection molding efficiency and product quality. Utility Model Content

[0003] The present invention provides an injection mold with a heated gate, which avoids damage to the appearance of the injection molded part and ensures a smooth appearance of the injection molded part by arranging an injection channel and a heating device in the lower mold.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An injection mold with a heated gate, comprising:

[0006] A lower mold and an upper mold, wherein the lower mold and the upper mold are combined to form a cavity for injection molding;

[0007] An injection channel, the injection channel being provided in the lower mold and communicating with the mold cavity;

[0008] A heating device with a heating nozzle is provided, the heating device is arranged in the lower mold, and the heating device is used to heat the injection channel.

[0009] Furthermore, the injection channel includes a sleeve and a runner;

[0010] The sleeve is provided on the side of the lower mold, the flow channel is embedded in the sleeve, and the flow channel extends into the lower mold and communicates with the cavity;

[0011] The sleeve opening and the flow channel are both within the heating range of the heating device.

[0012] Furthermore, the heating nozzle of the heating device is annular, and the heating nozzle of the heating device is respectively sleeved on the flow channel and the sleeve opening.

[0013] Furthermore, the shape of the cavity is "U"-shaped, the opening direction of the cavity is toward the lower mold, and the injection channel is connected to the opening of the cavity.

[0014] Furthermore, the side surfaces of the cavity are provided with reinforcing ribs.

[0015] Furthermore, a lifting mechanism is provided in the lower mold;

[0016] The lifting mechanism is arranged around the outer periphery of the injection channel, and is used for ejecting the injection-molded part from the cavity.

[0017] Furthermore, the lifting mechanism includes several groups of drivingly connected push rods and driving members;

[0018] The ejector rod passes through the lower mold to the molding surface of the cavity, and the ejector rod is used to eject the injection-molded part in the cavity through the driving member.

[0019] Furthermore, cooling pipes are provided in both the lower mold and the upper mold. The cooling pipes are arranged around the mold cavity and are used to cool the injection-molded part after injection molding is completed.

[0020] Furthermore, the mating surface of the upper mold is provided with a guide sleeve, and the mating surface of the lower mold is provided with a guide post matching the guide sleeve, and the guide post and the guide sleeve are slidably connected.

[0021] Furthermore, the die surface of the upper die is provided with a limiting block, and the die surface of the lower die is provided with a limiting groove matching the limiting block, and the limiting block and the limiting groove are movably connected.

[0022] The beneficial effects of the present invention are as follows: the present invention arranges the injection channel and the heating device of the mold in the lower mold, so that when producing products with high requirements on appearance, such as projector housings, the influence of the gate position on the appearance can be avoided, and the potential damage to the appearance of the product during demolding is reduced. The heating device is integrated in the lower mold, and the mold can also ensure that the injection molding material maintains appropriate fluidity before being injected into the cavity, reducing the problems of the material cooling too fast and solidifying unevenly during the injection molding process, and the gate solidifying too fast during the demolding process, thereby improving the injection molding efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the outer side of the structure of the utility model.

[0024] Figure 2 It is a cross-sectional view of a partial structure (heating device) of the utility model.

[0025] Figure 3 It is a cross-sectional view of a partial structure (injection channel) of the utility model.

[0026] Figure 4It is a schematic diagram of the internal pipeline structure of the utility model.

[0027] Figure 5 It is a structural schematic diagram of the heating device of the present utility model.

[0028] The accompanying drawings are marked as follows: 1-lower mold; 2-upper mold; 3-cavity; 4-injection channel; 5-heating device; 6-sleeve; 7-runner; 8-limiting groove; 9-lifting mechanism; 10-elevator; 11-cooling pipe; 12-guide sleeve; 13-guide column; 14-limiting block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. It should be understood that this application is not limited to the example embodiments disclosed herein. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0032] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] The utility model provides an attached Figures 1 to 5 In an embodiment of the present invention, an injection mold with a heated gate includes:

[0034] A lower mold 1 and an upper mold 2, wherein the lower mold 1 and the upper mold 2 are combined to form a cavity 3 for injection molding;

[0035] An injection channel 4 is provided in the lower mold 1 and communicates with the mold cavity 3;

[0036] A heating device 5 with a heating nozzle is provided. The heating device 5 is arranged in the lower mold 1 and is used to heat the injection channel 4 .

[0037] Specifically, the mold includes a lower mold 1 and an upper mold 2, which form a cavity 3 by closing the mold. The cavity 3 is the space for the plasticized material to flow in and solidify during the injection molding process. The plastic or other injection molding material is heated to a molten state, and the molten material is injected into the cavity 3 by an injection molding machine to finally form an injection molded part. In order to enable the molten material to flow smoothly into the cavity 3, an injection channel 4 is provided in the mold. The injection channel 4 is provided in the lower mold 1 and is connected to the cavity 3. In this specific embodiment, the injection channel 4 is also equipped with a heating device 5. Specifically, the heating device 5 is installed in the lower mold 1. The function of the heating device 5 is to heat the molten material in the injection channel 4 to ensure that the injection molding material maintains appropriate fluidity before being injected into the cavity 3. Constant heat is provided to the injection channel 4 by the heating nozzle, which can avoid the situation where the injection channel 4 is too long and the material is too low in temperature during the injection molding process, resulting in poor fluidity or even blockage. In addition, the setting of the heating device 5 can also reduce the problems of excessive cooling and uneven solidification of the material during the injection molding process.

[0038] Furthermore, the working principle of the heating device 5 is to use a heating nozzle to heat the injection channel 4 through an electric heating element or other heating method. The heating device 5 can accurately control the heating temperature, and usually adjusts the temperature through a temperature control system to achieve optimal injection conditions. According to the requirements of different materials, the temperature control system can automatically adjust the output power of the heating nozzle to ensure that the temperature in the entire injection channel 4 is uniform, thereby avoiding product quality problems caused by local overheating or overcooling.

[0039] More specifically, the present application adopts the design of internal injection molding in the lower mold 1, which not only solves the influence of the gate position on the appearance, but also ensures that the product surface will not be scratched or scratched by the external gate during the demolding process. The heating device 5 ensures that the injection molding material can flow fully during the injection process and will not form excessive cooling areas or solidify at the gate, so that the molten material in the mold can be smoothly separated during demolding, avoiding the material adhesion and product damage problems that may occur in traditional methods.

[0040] The injection channel 4 includes a sleeve 6 and a flow channel 7;

[0041] The sleeve 6 is provided on the side of the lower mold 1, and the flow channel 7 is embedded in the sleeve 6. The flow channel 7 extends into the lower mold 1 and communicates with the cavity 3;

[0042] The sleeve opening 6 and the flow channel 7 are both within the heating range of the heating device 5 .

[0043] This example further optimizes the material flow path during the injection molding process by setting a combination of the sleeve 6 and the runner 7, while ensuring the effective operation of the heating device 5. Specifically, the injection channel 4 includes the sleeve 6 and the runner 7. The sleeve 6 is provided on the side of the lower mold 1, that is, the optimal solution can be on the bottom surface of the lower mold 1. The runner 7 is embedded in the sleeve 6 and extends into the lower mold 1 to communicate with the cavity 3. In addition, the sides of the sleeve 6 and the runner 7 are fixedly connected to the heating nozzle of the heating device 5. Through this design, not only the smooth flow of the material is achieved, but also the heating efficiency is improved, and injection defects caused by uneven temperature are avoided.

[0044] Furthermore, the sleeve 6 is usually located on the side of the lower mold 1, and its function is to provide a suitable connection point for the runner 7 to be embedded. By accurately designing the size and shape of the sleeve 6, the embedding position of the runner 7 can be ensured to be accurate, avoiding the problem of loose fit or excessive gap due to improper installation. The runner 7 is a key part of the injection channel 4. It is embedded in the sleeve 6 and extends into the lower mold 1 to communicate with the cavity 3, ensuring that the molten material can flow from the injection molding machine through the injection channel 4 into the cavity 3 to complete the injection molding. More specifically, the design of the runner 7 can be reasonably planned according to the size of the mold, the shape of the cavity 3 and the fluidity of the injection molding material. The shape of the runner 7 is usually circular or rectangular to ensure that it can provide enough space for the molten material to flow, while avoiding material retention or poor flow due to unreasonable design of the runner 7. The length and diameter of the runner 7 can be optimized according to the characteristics of the injection molding material to reduce the resistance during the injection molding process and avoid premature cooling or solidification of the material during the flow process.

[0045] Furthermore, the heating nozzle of the heating device 5 is fixedly connected to the sleeve 6 and the runner 7, and can directly heat the molten material in the runner 7. The fixed connection with the sleeve 6 and the runner 7 ensures that the injection channel 4 can be completely heated, and both the injection inlet and the channel are heated. This also ensures that the heating nozzle can accurately provide uniform heat to the runner 7, which is crucial for ensuring the fluidity of the material during the injection molding process. Furthermore, the heating nozzle can ensure that the material maintains an appropriate temperature range throughout the injection channel 4 by precisely controlling the temperature, avoiding poor flow caused by too low a temperature, or material degradation or bubbles caused by too high a temperature.

[0046] The heating nozzle of the heating device 5 is annular and is respectively sleeved on the flow channel 7 and the sleeve opening 6 .

[0047] The annular heating nozzles are respectively mounted on the runner 7 and the sleeve 6, which can effectively improve the heating efficiency of the molten material during the injection molding process, ensure the smoothness of the material flow, and ensure the working stability of the mold and the high quality of the product. Specifically, the design of the annular heating nozzle helps it to evenly wrap the sides of the runner 7 and the sleeve 6, so that the molten material in the runner 7 can be heated more effectively. The heating nozzle with an annular structure can avoid the problem of uneven heating by evenly distributing the heat source, so that the molten material in the runner 7 can maintain a relatively stable fluidity and temperature throughout the injection molding process. Compared with other single-point heating designs, the annular heating nozzle can provide a wider and more uniform heating effect, which is especially important for injection molding with high precision and high quality requirements. Especially in the production of products with high appearance requirements such as projector housings, the annular heating nozzle can effectively prevent local uneven cooling, thereby avoiding molding defects.

[0048] Furthermore, the design of the heating nozzle being sleeved on the runner 7 and the sleeve 6 enables the heating nozzle to directly provide heating to the molten material in the injection channel 4, and at the same time ensures that the heating effect is maximized by being sleeved on the contact surface of the runner 7 and the sleeve 6. The sleeve design requires good contact and coordination between the heating nozzle and the runner 7 and the sleeve 6 to ensure effective heat conduction and avoid low heating efficiency due to poor contact. The sleeve connection method can usually be achieved by mechanical fixation (such as threaded connection, snap-on connection, etc.) or press-fit connection. This sleeve structure not only ensures a stable connection between the heating nozzle and the runner 7 and the sleeve 6, but also facilitates subsequent maintenance and replacement, because the annular design of the heating nozzle enables it to surround the runner 7 and the sleeve 6, with a larger heating area, avoiding molding problems caused by insufficient local heat.

[0049] The shape of the cavity 3 is "U"-shaped, the opening direction of the cavity 3 is toward the lower mold 1, and the injection channel 4 is connected to the opening of the cavity 3.

[0050] Specifically, in traditional injection molding designs, especially for products with high aesthetic requirements, such as projector housings, the gate is typically located on the outside of the housing. While this design is simple and easy to implement, the gate location often causes cosmetic defects, such as scuff marks and surface scratches, during demolding, which in turn affects the product's appearance quality. Cavity 3 is shaped "U," with its opening facing toward the lower mold 1. The injection channel 4 is partially connected to the opening of cavity 3. This design fundamentally addresses the issue of cosmetic quality degradation by improving the configuration of the injection channel 4 and the gate. By orienting the opening of cavity 3 toward the lower mold 1, the gate can be located on the inside of the housing, rather than being exposed externally. This ensures a smooth and even appearance while avoiding damage to the housing's appearance caused by an external gate. More importantly, the internal gate location prevents scratches on the housing's outer surface and poor demolding during demolding. Orienting the cavity 3's opening toward the lower mold 1 not only maintains the integrity of the product's appearance but also reduces the defects caused by traditional external gates.

[0051] The side surfaces of the cavity 3 are provided with reinforcing ribs.

[0052] Specifically, the sides of cavity 3 are provided with reinforcing ribs to enhance the structural strength and rigidity of the injection-molded product and strengthen the mold's stability. The rib design not only improves the product's physical properties but also optimizes the material's fluidity and filling properties during the injection molding process, thereby improving injection molding efficiency and product quality.

[0053] Furthermore, in this embodiment, the shape of the reinforcing ribs includes but is not limited to vertical, wavy, and patterned shapes.

[0054] A lifting mechanism 9 is provided in the lower die 1;

[0055] The lifting mechanism 9 is arranged around the outer circumference of the injection channel 4 , and the lifting mechanism 9 is used to eject the injection-molded part from the cavity 3 .

[0056] Specifically, the core function of the lifting mechanism 9 is to eject the already formed injection molded part from the mold cavity 3. By being arranged in a ring around the periphery of the injection channel 4, the lifting mechanism 9 can use mechanical force to push the injection molded part out of the opening of the mold cavity 3. The mechanism usually adopts hydraulic, pneumatic or mechanical drive to achieve the lifting action. Specifically, the lifting mechanism 9 may include one or more lifting rods, pistons, cylinders and other components. These components work in coordination through the control system. When the injection molded part cools and solidifies and completes molding, the control system commands the activation of the lifting mechanism 9, driving the piston or cylinder and other components to start moving upward or outward, thereby ejecting the injection molded part from the mold cavity 3. This process needs to work in coordination with other parts of the mold to ensure the smoothness and precision of the lifting process.

[0057] The lifting mechanism 9 includes several groups of drivingly connected push rods 10 and driving members;

[0058] The ejector rod 10 passes through the lower mold 1 to the molding surface of the cavity 3 , and the ejector rod 10 is used to eject the injection-molded part in the cavity 3 through the driving member.

[0059] In this embodiment, the jacking mechanism 9 realizes the jacking function through several groups of transmission-connected jacks 10 and driving members. Specifically, the driving member can transmit the driving force to each jack 10 through one or more groups of hydraulic cylinders, air cylinders or electric cylinders, thereby realizing the synchronous or gradual ejection action of the jack 10. The arrangement of multiple jacks 10 and driving members can ensure that sufficiently uniform thrust is provided during the entire jacking process, avoiding deformation or damage of the injection molded parts due to uneven jacking force. Each group of jacks 10 is connected to an independent driving member, and the transmission device is responsible for evenly transmitting the power of the driving member to each jack 10, so that the jacking action can be carried out smoothly.

[0060] The transmission mode of the ejector pin 10 is usually achieved through mechanical linkage, hydraulic or pneumatic transmission. In mechanical linkage, the driving part transmits the driving force to each group of ejector pins 10 through transmission elements such as gears, bearings, and transmission chains, so that they work simultaneously or in sequence. If it is hydraulically or pneumatically driven, the hydraulic cylinder or air cylinder drives the jacking action of the ejector pin 10 by pushing the piston rod. In the hydraulic and pneumatic systems, pressure regulation is very important, which can provide stable thrust as needed to ensure that the lifting mechanism 9 does not experience excessive or insufficient thrust fluctuations during the entire demolding process.

[0061] Cooling pipes 11 are provided in both the lower mold 1 and the upper mold 2 . The cooling pipes 11 are arranged around the mold cavity 3 . The cooling pipes 11 are used to cool the molded part after injection molding is completed.

[0062] In this embodiment, a plurality of cooling pipes 11 are provided in both the lower mold 1 and the upper mold 2, and the cooling pipes 11 are arranged around the mold cavity 3, with the purpose of effectively cooling the injection molded part after the injection molding is completed. During the injection molding process, after the molten plastic is injected into the mold cavity 3, it will undergo a cooling and solidification process for a certain period of time. The speed and uniformity of the cooling directly affect the final quality of the injection molded part. Generally, the main purpose of cooling is to solidify the molten plastic as quickly as possible and reduce the temperature non-uniformity during the cooling process, thereby avoiding deformation, warping or internal stress problems caused by uneven cooling. In order to ensure the uniformity of the cooling effect, the cooling pipes 11 are arranged around the mold cavity 3 to ensure that each area of ​​the mold cavity 3 can be sufficiently cooled.

[0063] The mating surface of the upper mold 2 is provided with a guide sleeve 12 , and the mating surface of the lower mold 1 is provided with a guide post 13 matching the guide sleeve 12 , and the guide post 13 is slidably connected to the guide sleeve 12 .

[0064] In this embodiment, the clamping surface of the upper mold 2 is provided with a guide sleeve 12, and the clamping surface of the lower mold 1 is provided with a guide column 13 matching the guide sleeve 12, and the guide column 13 is slidably connected to the guide sleeve 12. The guide sleeve 12 is in the shape of an inwardly concave cylindrical groove. The purpose is to ensure that the upper mold 2 and the lower mold 1 maintain precise docking during the clamping process to avoid mold deformation, dislocation or uneven pressure distribution, thereby improving the accuracy of injection molding and the quality of the product. Through the sliding fit of the guide sleeve 12 and the guide column 13, the stability of the mold during clamping can be ensured, problems caused by friction or deformation can be avoided, and a design that facilitates mold installation, disassembly and maintenance is provided.

[0065] Specifically, the guide sleeve 12 and the guide post 13 are designed to ensure the precise positioning and docking of the upper mold 2 and the lower mold 1 during the mold closing process. The guide sleeve 12 is usually provided on the mold closing surface of the upper mold 2 as a guiding component when the upper mold 2 is closed, and the guide post 13 is provided on the mold closing surface of the lower mold 1 and accurately docks with the guide sleeve 12. The cooperation of the guide post 13 and the guide sleeve 12 ensures that the upper mold 2 and the lower mold 1 can maintain the same direction and position when the mold is closed, preventing dislocation or instability during the mold closing process. Due to the sliding connection design of the guide post 13 and the guide sleeve 12, the relative movement between the two can be guaranteed to be smooth and smooth, reducing friction and wear, thereby extending the service life of the mold.

[0066] The die surface of the upper die 2 is provided with a limiting block 14, and the die surface of the lower die 1 is provided with a limiting groove 8 that matches the limiting block 14. The limiting block 14 and the limiting groove 8 are movably connected.

[0067] In this embodiment, the clamping surface of the upper mold 2 is provided with a limit block 14, and the clamping surface of the lower mold 1 is provided with a limit groove 8 that matches the limit block 14, and the limit block 14 is movably connected to the limit groove 8, the purpose of which is to provide precise positioning and restriction during the mold clamping process, ensure that the upper mold 2 and the lower mold 1 can be accurately docked when the mold is clamped, and avoid affecting the molding accuracy of the injection molded part due to excessive movement or misalignment. Furthermore, the connection method between the limit block 14 and the limit groove 8 includes but is not limited to a sliding groove, a sliding pin, a cylindrical guide, etc., so that the limit block 14 can slide or position freely in the limit groove 8. Through the above-mentioned movable connection method, the limit block 14 and the limit groove 8 can not only be stably docked during the mold clamping, but also allow the mold to be slightly adjusted or aligned after the mold clamping, ensuring that the accuracy of the mold remains within a reasonable range.

[0068] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0069] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An injection mold with a heated gate, characterized in that: include: A lower mold and an upper mold, wherein the lower mold and the upper mold are combined to form a cavity for injection molding; An injection channel, the injection channel being provided in the lower mold and communicating with the mold cavity; A heating device with a heating nozzle is provided, the heating device is arranged in the lower mold, and the heating device is used to heat the injection channel.

2. The injection mold with a heated gate according to claim 1, characterized in that: The injection channel includes a sleeve and a runner; The sleeve is provided on the side of the lower mold, the flow channel is embedded in the sleeve, and the flow channel extends into the lower mold and communicates with the cavity; The sleeve opening and the flow channel are both within the heating range of the heating device.

3. The injection mold with a heated gate according to claim 2, characterized in that: The heating nozzle of the heating device is annular and is respectively sleeved on the flow channel and the sleeve opening.

4. The injection mold with a heated gate according to claim 1, characterized in that: The shape of the cavity is "U"-shaped, the opening direction of the cavity is toward the lower mold, and the injection channel is connected to the opening of the cavity.

5. The injection mold with a heated gate according to claim 4, characterized in that: The side surfaces of the cavity are provided with reinforcing ribs.

6. The injection mold with a heated gate according to claim 1, characterized in that: A lifting mechanism is provided in the lower die; The lifting mechanism is arranged around the outer periphery of the injection channel, and is used for ejecting the injection-molded part from the cavity.

7. The injection mold with a heated gate according to claim 6, characterized in that: The lifting mechanism includes several groups of drivingly connected push rods and driving members; The ejector rod passes through the lower mold to the molding surface of the cavity, and the ejector rod is used to eject the injection-molded part in the cavity through the driving member.

8. The injection mold with a heated gate according to claim 1, characterized in that: Cooling pipes are provided in both the lower mold and the upper mold. The cooling pipes are arranged around the mold cavity and are used to cool the injection-molded part after injection molding is completed.

9. The injection mold with a heated gate according to claim 1, characterized in that: The mating surface of the upper mold is provided with a guide sleeve, and the mating surface of the lower mold is provided with a guide column matching the guide sleeve, and the guide column and the guide sleeve are slidably connected.

10. The injection mold with a heated gate according to claim 1, characterized in that: The die-matching surface of the upper die is provided with a limiting block, and the die-matching surface of the lower die is provided with a limiting groove matching the limiting block, and the limiting block and the limiting groove are movably connected.

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