Injection mold

Abstract

The utility model relates to an injection mold, and relates to the technical field of molds, the injection mold comprises a front mold, the front mold comprises a fixing plate, a stripper plate and a front mold plate which are sequentially arranged from top to bottom, a front mold core is embedded in the front mold plate, the stripper plate is provided with an insert, and a product cavity is formed in the bottom of the front mold core; the hot runner body is provided with a hot runner penetrating through the inlet end and the outlet end of the hot runner body, and the outlet end of the hot runner abuts against the front mold core; the sub-runner is communicated with the hot runner and the product cavity; and the heating piece is used for heating the hot runner body. The hot runner and the heating piece are designed, the temperature of plastic is controlled by heating the hot runner body, it is ensured that the plastic keeps proper fluidity and plasticity, and therefore the product quality is improved, the design does not need to increase the requirement for an injection molding machine, does not need to lengthen a nozzle of the injection molding machine, and is suitable for any injection molding machine; and due to the design that the hot runner penetrates to the front mold core, the plastic loss can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to an injection mold. Background Art

[0002] In the field of modern injection molding, the three-plate mold is a common injection mold structure, which is usually composed of a fixed plate, a bushing, a stripping part, a front mold and a back mold. These components are arranged in order of height to form a complete injection mold system.

[0003] During the mold closing and injection molding process, the molten plastic is injected from the nozzle of the injection molding machine into the main channel of the bushing, and then flows through the front mold plate of the front mold into the cavity between the front mold core and the rear mold core to finally form a molded product; however, since the molten plastic flows for a long time in the main channel of the mold, its temperature decreases, and some of the plastic may be retained in the main channel. In addition, after the molding is completed, the molten plastic may also be cut off and lost in the flow channel between the outlet of the bushing and the front mold core. In order to solve these problems, the current existing technology is to lengthen the nozzle of the injection molding machine so that it partially extends into the main channel of the bushing, thereby shortening the time for the injection plastic to enter the main channel of the bushing and reducing the possibility of the injection plastic being retained in the main channel.

[0004] However, although this solution solves the retention problem in the main channel to a certain extent, there is still material breakage and loss after molding, which will affect the cost and quality of the injection molded product. In addition, the existing technical solution also requires increased requirements and costs for the injection molding machine nozzle. Utility Model Content

[0005] In order to improve the production efficiency and quality of injection molded products and reduce production costs, the present application provides an injection mold.

[0006] The present application provides an injection mold that adopts the following technical solution:

[0007] An injection mold, comprising a front mold, the front mold comprising a fixing plate, a stripping plate and a front mold plate arranged in sequence from top to bottom, the front mold plate is embedded with a front mold core, the stripping plate is provided with an insert, the insert is in contact with the front mold core, and a product cavity is provided at the bottom of the front mold core;

[0008] It also includes: a hot runner body, the hot runner body is provided with a hot runner penetrating the inlet and outlet ends thereof, the hot runner body penetrates the fixing plate, the stripper plate and the insert, and the outlet end of the hot runner abuts against the front mold core;

[0009] A runner connecting the hot runner and the product cavity and penetrating the front mold core;

[0010] A heating element is used to heat the hot runner body.

[0011] By adopting the above technical scheme, when working, the molten plastic is injected into the inlet end of the hot runner by the nozzle of the injection molding machine, the molten plastic flows in the hot runner, and then flows out from its outlet end to the branch channel, the molten plastic enters the product cavity through the branch channel, fills the space in the cavity, the plastic cools and solidifies in the product cavity, and then the front mold is opened, and the molded product is taken out; in this process, the application utilizes the design of the hot runner and the heating element, and by heating the hot runner body, the temperature of the molten plastic can be effectively controlled to ensure that it maintains appropriate fluidity and plasticity during the injection molding process, thereby improving the quality of the molded product. This design does not require an increase in the demand for the injection molding machine, nor does it require the lengthening of the nozzle of the injection molding machine, so it can be applied to any model of injection molding machine; and the design of the hot runner directly penetrating into the front mold core allows the plastic to flow more smoothly to the product cavity, reducing retention and material breakage in the flow channel, thereby reducing plastic loss, reducing costs, and improving production efficiency.

[0012] In a specific possible implementation scheme, it also includes a bushing and a fixing seat, the bushing is embedded in the top of the fixing plate, the fixing seat is embedded in the bottom of the fixing plate and penetrates the stripping plate and the insert, the bottom surface of the fixing seat and the top surface of the front mold core are on the same horizontal plane, the bushing, the fixing plate and the fixing seat are jointly provided with a accommodating cavity for installing the hot runner body, the fixing seat is provided with a through hole, and the through hole is connected to the hot runner and the diverter channel.

[0013] By adopting the above technical solution, the design of the bushing and the fixing seat makes the mold structure more stable, and the accommodating cavity is jointly designed for installing the hot runner body, which can effectively support and fix the hot runner body, reduce the vibration and deformation of the hot runner body during the injection molding process, and help improve the precision and stability of the product; during injection molding, the through holes on the fixing seat ensure that the plastic in the hot runner can flow smoothly to the product cavity, avoiding problems such as runner blockage or material breakage, and improving production efficiency and stability.

[0014] In a specific possible implementation manner, the heating element is disposed in the accommodating cavity, and the heating element is arranged along the circumference of the hot runner body.

[0015] By adopting the above technical solution, by placing the heating element in the accommodating cavity, heat can be transferred to the hot runner body more effectively, so that it can be heated evenly; by arranging the heating element along the circumference of the hot runner body, it can be ensured that the heat can evenly cover the entire hot runner, avoiding the situation where the local temperature is too high or too low, thereby improving the heating uniformity of the plastic material and the molding quality of the product.

[0016] In a specific possible implementation manner, a buffer space is reserved between one side of the outlet end of the hot runner body and the fixing seat, and the buffer space is in communication with the hot runner and the through hole.

[0017] By adopting the above technical solution and utilizing the design with a buffer space, the molten plastic can be decompressed to a certain extent and flow smoothly before entering the runner, thereby reducing the pressure shock of the molten plastic when entering the runner, alleviating the pressure and speed of the molten plastic when flowing, and allowing it to flow into the runner more stably and evenly, helping to reduce unstable factors in the flow of molten plastic, improve the molding accuracy and consistency of molded parts, and improve the molding quality of products.

[0018] In a specific possible implementation manner, the outlet end comprises a plurality of jet openings, and the plurality of jet openings are arranged obliquely.

[0019] By adopting the above technical solution, when working, the jet is guided into the buffer space through multiple jet ports and then flows into the diversion channel, which can more evenly distribute the plastic material and reduce dead corners and bubbles in the filling process, thereby improving the molding quality of the product; and jetting through multiple jet ports can effectively reduce the pressure of the molten plastic when it passes through the jet ports, thereby reducing the impact on the mold and equipment and extending their service life.

[0020] In a specific possible implementation manner, the jet port is arranged at an angle of 10°-70° to the vertical direction.

[0021] By adopting the above technical solution and utilizing a moderate tilt angle design, it is possible to help fill the mold more evenly, thereby helping to reduce bubbles, defects or incomplete filling in the product and improving the molding quality of the product.

[0022] In a specific possible implementation manner, the hot runner body is provided with a sealing portion, the sealing portion is provided in the buffer space, and the sealing portion is interference fit with an inner wall of the buffer space.

[0023] By adopting the above technical solution, the presence of the sealing component ensures that the molten plastic in the buffer space will not leak or penetrate into other components in the accommodating cavity, while also ensuring the functional integrity of the buffer space. This design can improve the stability and reliability of the hot runner system and ensure its normal operation and long-term use.

[0024] In a specific possible implementation manner, the hot runner body is provided with a clamping portion, one side of the clamping portion is clamped and abutted against the inner wall of the bushing, and the other side of the clamping portion is clamped and abutted against the inner wall of the fixing plate.

[0025] By adopting the above technical solution, the presence of the snap-fitting part enables the hot runner body to be firmly fixed between the bushing and the fixed plate, thereby ensuring the stability and safety of the entire hot runner system and preventing the parts from being dislocated or falling off due to vibration or pressure changes during the injection molding process; and the snap-fitting abutment design of the snap-fitting part can provide a certain degree of sealing performance to prevent the molten plastic or other fluids from leaking from the hot runner body and the bushing or the fixed plate during the flow; the design of the snap-fitting part also makes the assembly and disassembly between the hot runner body and the bushing or the fixed plate more convenient.

[0026] In a specific feasible implementation scheme, the branch channel includes a connected transverse flow channel, a plurality of oblique flow channels and a vertical flow channel, the transverse flow channel is connected to the hot runner, the oblique flow channel corresponds to the vertical flow channel one by one, the transverse flow channel and the plurality of oblique flow channels are arranged between the front mold core and the insert, the vertical flow channel is arranged through the front mold core, and the vertical flow channel is arranged corresponding to and connected to the product cavity.

[0027] By adopting the above technical solution, during injection molding, the molten plastic enters the area on the front mold core through the cross runner connected to the hot runner, and then flows through the cross runner to multiple inclined runners, flows along the inclined runners to the corresponding vertical runners, and finally flows along the vertical runners to the corresponding product cavity to fill the product cavity and realize the injection molding of the product; in this process, through effective diversion design, the flow path of the injection plastic can be controlled, the filling speed of the injection plastic can be accelerated, and multiple products can be produced at the same time, thereby improving production efficiency.

[0028] In a specific possible implementation manner, the ends of the cross flow channel extend to both sides and form cold material grooves.

[0029] By adopting the above technical solution, when the injection plastic enters the cross runner, due to the cold material troughs formed at the ends of the cross runners, the injection plastic with lower temperature will remain in these cold material troughs, so that the hotter plastic will be diverted to the inclined runners first, and the plastic passing through the inclined runners will then enter the vertical runners and finally flow to the product cavity to fill the space required for the molded product. In this process, the setting of the cold material troughs realizes the layered control of the injection plastic temperature, ensuring that the plastic with higher temperature can flow smoothly to the inclined runners, thereby improving the stability and quality of product molding.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] The present application utilizes the design of the hot runner and the heating element. By heating the hot runner body, the temperature of the molten plastic can be controlled to ensure that it maintains proper fluidity and plasticity during the injection molding process, thereby improving the quality of the molded product. This design does not require an increase in the demand for the injection molding machine, nor does it require the nozzle of the injection molding machine to be lengthened, so it can be used with any model of injection molding machine;

[0032] The present application utilizes a design in which the hot runner directly penetrates the front mold core, and the flow path of the plastic is shortened, thereby reducing the loss of plastic in the runner, allowing the plastic to flow more smoothly to the product cavity, reducing retention and material breakage in the runner, thereby reducing the loss of plastic, reducing costs, and improving production efficiency;

[0033] This application, through effective diversion design, can allocate different flow paths to different product cavities, realize the simultaneous production of multiple products, thereby improving production efficiency, reducing production costs and time, and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of an injection mold according to an embodiment of the present application.

[0035] Figure 2 It is a cross-sectional view used to show the fixing plate, stripper plate, front template, and hot runner body.

[0036] Figure 3 It is a cross-sectional view used to show the specific structure of the hot runner body.

[0037] Figure 4 It is a cross-sectional view used to show the diversion channel.

[0038] Explanation of the reference numerals in the accompanying drawings: 1. fixing plate; 11. bushing; 12. fixing seat; 121. through hole; 2. stripping plate; 21. insert; 3. front template; 31. front mold core; 4. product cavity; 5. hot runner body; 51. mounting body; 52. runner body; 53. sealing part; 54. snap-fitting part; 6. hot runner; 61. inlet end; 62. outlet end; 63. jet nozzle; 7. branch channel; 71. horizontal flow channel; 72. inclined flow channel; 73. vertical flow channel; 74. cold material trough; 8. heating element; 9. accommodating chamber; 10. buffer space. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-4 This application is described in further detail.

[0040] Reference Figure 1 and Figure 2 , the present application embodiment discloses an injection mold, comprising:

[0041] The front mold includes a fixing plate 1, a stripping plate 2 and a front mold plate 3 which are sequentially arranged from top to bottom along the height direction. A front mold core 31 is embedded at the bottom of the front mold plate 3. In this embodiment, the front mold core 31 includes but is not limited to being fixed to the front mold core 31 by bolts. An insert 21 is embedded at the bottom of the stripping plate 2. In this embodiment, the insert 21 includes but is not limited to being fixed to the stripping plate 2 by bolts.

[0042] The bottom surface of the insert 21 is in contact with the top surface of the front mold core 31. The bottom of the front mold core 31 is provided with a product cavity 4. In this embodiment, the injection mold further includes a rear mold, and the rear mold includes a rear mold core. (The rear mold and the rear mold core are not shown in the drawings in this embodiment.) The product cavity 4 of the front mold core 31 corresponds to the structure of the upper half of the product, and the product cavity 4 of the rear mold core corresponds to the structure of the lower half of the product.

[0043] The hot runner body 5 is provided with a hot runner 6 that penetrates its inlet end 61 and outlet end 62. The hot runner body 5 penetrates the fixed plate 1, the stripper plate 2 and the insert 21. The outlet end 62 of the hot runner 6 abuts against the front mold core 31.

[0044] A runner 7 is provided on the front mold core 31 , the runner 7 connects the hot runner 6 with the product cavity 4 , and runs through the front mold core 31 ;

[0045] A heating element 8, the heating element 8 is used to heat the hot runner body 5. In this embodiment, the heating element 8 includes but is not limited to an external power supply to achieve heating;

[0046] Before working, the nozzle of the injection molding machine is connected to the inlet end 61 of the hot runner body 5 of the injection mold. During working, the molten plastic is injected into the inlet end 61 of the hot runner 6 by the nozzle of the injection molding machine, and the molten plastic flows in the hot runner 6, and then flows out from the outlet end 62 thereof to the branch runner 7. The molten plastic enters the product cavity 4 through the branch runner 7 and fills the space in the cavity. The plastic is cooled and solidified in the product cavity 4, and then the front mold is opened, and the molded product is taken out;

[0047] In this process, the hot runner body 5 is heated by the heating element 8, which can effectively control the temperature of the molten plastic, ensuring that it maintains appropriate fluidity and plasticity during the injection molding process, thereby improving the quality of the molded product. This design does not require an increase in the demand for the injection molding machine, nor does it require a lengthened injection molding machine nozzle, so it can be applied to any type of injection molding machine; and the design of the hot runner 6 directly penetrating into the front mold core 31 allows the plastic to flow more smoothly to the product cavity 4, reducing retention and material breakage in the flow channel, thereby reducing plastic loss, reducing costs, and improving production efficiency.

[0048] Reference Figure 2 and Figure 3The injection mold further includes a bushing 11 and a fixing seat 12. The bushing 11 is embedded in the top of the fixing plate 1. In the present embodiment, the bushing 11 includes but is not limited to being fixed to the fixing plate 1 by bolts. The fixing seat 12 is embedded in the bottom of the fixing plate 1 and penetrates the stripping plate 2 and the insert 21. In the present embodiment, the fixing seat 12 includes but is not limited to being fixed to the fixing plate 1 by bolts. The bottom surface of the fixing seat 12 and the top surface of the front mold core 31 are on the same horizontal plane. The bushing 11, the fixing plate 1, and the fixing seat 12 are jointly provided with an accommodating cavity 9 for installing the hot runner body 5. The fixing seat 12 is provided with a through hole 121, and the through hole 121 is connected to both the hot runner 6 and the runner 7.

[0049] The design of the bushing 11 and the fixing seat 12 makes the mold structure more stable, and the accommodating cavity 9 is designed together for installing the hot runner body 5, which can effectively support and fix the hot runner body 5, reduce the vibration and deformation of the hot runner body 5 during the injection molding process, and help improve the accuracy and stability of the product; during the injection molding operation, the through hole 121 on the fixing seat 12 ensures that the plastic in the hot runner 6 can flow smoothly to the product cavity 4, avoiding problems such as runner blockage or material breakage, and improving production efficiency and stability;

[0050] The hot runner body 5 is provided with a clamping portion 54. In this embodiment, the hot runner body 5 includes a mounting body 51 and a flow channel body 52. ​​The flow channel body 52 is inserted into the mounting body 51. The flow channel body 52 and the mounting body 51 are connected by threads, but not limited to threads. In this embodiment, the clamping portion 54 is provided at the top of the mounting body 51. One side of the clamping portion 54 is clamped and abutted with the inner wall of the bushing 11, and the other side is clamped and abutted with the inner wall of the fixing plate 1. In this embodiment, the hot runner 6 penetrates the clamping portion 54 of the mounting body 51 and penetrates the flow channel body 52 in the vertical direction, and the inlet end 61 of the hot runner 6 is provided on the clamping portion 54, and the outlet end 62 is provided at the bottom of the flow channel body 52.

[0051] The presence of the snap-fitting portion 54 enables the hot runner body 5 to be firmly fixed between the bushing 11 and the fixing plate 1, thereby ensuring the stability and safety of the entire hot runner 6 system and preventing the components from being dislocated or falling off due to vibration or pressure changes during the injection molding process; and the snap-fitting abutment design of the snap-fitting portion 54 can provide a certain degree of sealing performance to prevent molten plastic or other fluids from leaking from between the hot runner body 5 and the bushing 11 and the fixing plate 1 during the flow process; the design of the snap-fitting portion 54 also facilitates the assembly and disassembly between the hot runner body 5 and the bushing 11 and the fixing plate 1.

[0052] Reference Figure 2 and Figure 3The heating element 8 is arranged in the accommodating cavity 9, and the heating element 8 is arranged along the circumference of the hot runner body 5. In the present embodiment, the heating element 8 includes but is not limited to a heating coil, and the heating coil is arranged along the circumference of the mounting body 51 in the hot runner body 5, and the inner wall of the heating coil is arranged in contact with the outer wall of the mounting body 51; placing the heating element 8 in the accommodating cavity 9 can more effectively transfer heat to the hot runner body 5, so that it is heated evenly; by arranging the heating element 8 along the circumference of the hot runner body 5, it can be ensured that the heat can evenly cover the entire hot runner 6, avoiding the situation where the local temperature is too high or too low, thereby improving the heating uniformity of the plastic material and the molding quality of the product.

[0053] Reference Figure 3 A buffer space 10 is reserved between one side of the outlet end 62 of the hot runner body 5 and the fixing seat 12. In the present embodiment, a buffer space 10 is reserved between the runner body 52 of the hot runner body 5 and the inner wall of the fixing seat 12, and the buffer space 10 is connected to the hot runner 6 and the through hole 121. The design of the buffer space 10 allows the molten plastic to be decompressed to a certain extent and flow smoothly before entering the branch channel 7, thereby reducing the pressure shock of the molten plastic when entering the branch channel 7, alleviating the pressure and speed of the molten plastic when flowing, and making it flow into the branch channel 7 more stably and evenly, which helps to reduce the unstable factors in the flow process of the molten plastic, improve the molding accuracy and consistency of the molded parts, and improve the molding quality of the product.

[0054] Reference Figure 3 The hot runner body 5 is provided with a sealing portion 53. In the present embodiment, a sealing portion 53 is provided at the bottom of the mounting body 51 of the hot runner body 5. The sealing portion 53 is arranged in the buffer space 10, and the sealing portion 53 is interference fit with the inner wall of the buffer space 10. The existence of the sealing portion 53 ensures that the molten plastic in the buffer space 10 will not leak or penetrate into other components in the accommodating cavity 9, and also ensures the functional integrity of the buffer space 10, thereby improving the stability and reliability of the hot runner 6 system and ensuring its normal operation and long-term use.

[0055] Reference Figure 3 , the outlet end 62 includes a plurality of jet ports 63. In the present embodiment, the jet ports 63 include but are not limited to 4. The 4 jet ports 63 are all inclined. The 4 jet ports 63 are all connected to the hot runner 6 and the buffer space 10. The 4 jet ports 63 are all arranged at 10°-70° with respect to the vertical direction. In the present embodiment, different product designs require different plastic flow modes and filling modes. The selection of the inclination angle should take into account the structural characteristics and molding requirements of the product to ensure that the plastic can fully fill the mold and achieve the desired product shape and size. In practical applications, the optimal inclination angle needs to be determined through experiments and optimization to meet specific production requirements.

[0056] During operation, the jet is guided into the buffer space 10 through multiple jet ports 63 and then flows into the branch channel 7, which can distribute the plastic material more evenly, reduce dead corners and bubbles in the filling process, and thus improve the molding quality of the product; the jet is ejected through multiple jet ports 63, which can effectively reduce the pressure of the molten plastic when it passes through the jet ports 63, thereby reducing the impact on the mold and equipment and extending their service life; and the use of a moderate tilt angle design can help fill the mold more evenly, thereby helping to reduce bubbles, defects or incomplete filling in the product and improve the molding quality of the product.

[0057] Reference Figure 3 and Figure 4 , the runner 7 includes a connected transverse runner 71, a plurality of oblique runners 72 and a vertical runner 73, the transverse runner 71 is connected to the hot runner 6, in this embodiment, the oblique runner 72 and the vertical runner 73 are both set to 4, the oblique runners 72 and the vertical runners 73 correspond to each other and are connected, the transverse runner 71 and the four oblique runners 72 are arranged between the front mold core 31 and the insert 21, in this embodiment, the transverse runner 71 and the four oblique runners 72 are arranged on the same horizontal plane, the four vertical runners 73 are all arranged through the front mold core 31, and the four vertical runners 73 correspond to each other and are connected to the product cavity 4 respectively; through the effective flow diversion design, different flow paths can be allocated to different product cavities 4, so as to realize the simultaneous production of multiple products, thereby improving production efficiency, reducing production costs and time, and ensuring product quality;

[0058] The two ends of the cross flow channel 71 extend to both sides and form cold material grooves 74; when the injection plastic enters the cross flow channel 71, the injection plastic with a lower temperature will remain in these cold material grooves 74, so that the hotter plastic will be preferentially diverted to flow to the four oblique flow channels 72. By setting the cold material grooves 74, the temperature of the injection plastic can be controlled in layers, ensuring that the plastic with a higher temperature can flow smoothly to the oblique flow channels 72, thereby improving the stability and quality of product molding;

[0059] During injection molding, the molten plastic enters the hot runner 6 through the inlet end 61 of the hot runner body 5, and flows along the hot runner 6 to the cross runner 71 connected to the hot runner 6. The molten plastic enters the area on the front mold core 31, and then flows through the cross runner 71 to be diverted to the four oblique runners 72. In this process, when the injection plastic enters the cross runner 71, since a cold material groove 74 is formed at the end of the cross runner 71, the injection plastic with a lower temperature will remain in these cold material grooves 74, so that the hotter plastic will be diverted to the oblique runner 72 first. The injection plastic then flows along the four oblique runners 72 to the corresponding vertical runners 73, and finally flows along the vertical runner 73 to the corresponding product cavity 4, fills the product cavity 4, and after cooling, forms a molded product in the product cavity 4, completing the injection molding of the product.

[0060] The implementation principle of the embodiment of the present application is as follows: before working, the nozzle of the injection molding machine can be fixed on the bushing 11 of the injection mold and connected with the inlet end 61 of the hot runner body 5 of the injection mold;

[0061] During operation, the molten plastic is injected into the inlet end 61 of the hot runner 6 from the nozzle of the injection molding machine, and the molten plastic flows in the hot runner 6. During this process, the heating element 8 heats the hot runner body 5, thereby controlling the temperature of the molten plastic in the hot runner 6 to ensure that it maintains appropriate fluidity and plasticity during the injection molding process;

[0062] The molten plastic passes through the hot runner 6 and then ejects from the multiple jet ports 63 at the outlet end 62 thereof into the buffer space 10. In this process, the buffer space 10 can reduce the pressure shock of the molten plastic when it enters the branch runner 7, relieve the pressure and speed of the molten plastic when it flows, and make it flow into the branch runner 7 more stably and evenly.

[0063] The molten plastic then flows out to the cross flow channel 71 of the diversion channel 7 through the through hole 121 of the buffer space 10, and the molten plastic enters the area on the front mold core 31, and then flows through the cross flow channel 71 to be diverted to the four oblique flow channels 72. In this process, when the injection plastic enters the cross flow channel 71, since a cold material groove 74 is formed at the end of the cross flow channel 71, the injection plastic with a lower temperature will remain in these cold material grooves 74, so that the hotter plastic will be diverted to the oblique flow channel 72 first, and the injection plastic will then flow along the four oblique flow channels 72 to the corresponding vertical flow channels 73, and finally flow along the vertical flow channel 73 to the corresponding product cavity 4, fill the product cavity 4, and after cooling, form a molded product in the product cavity 4, completing the injection molding of the product.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection mold, comprising a front mold, the front mold comprising a fixing plate (1), a stripping plate (2) and a front mold plate (3) arranged in sequence from top to bottom, the front mold plate (3) being embedded with a front mold core (31), the stripping plate (2) being provided with an insert (21), the insert (21) being in contact with the front mold core (31), and a product cavity (4) being provided at the bottom of the front mold core (31); characterized in that: include: A hot runner body (5), wherein the hot runner body (5) is provided with a hot runner (6) penetrating its inlet and outlet ends, the hot runner body (5) is arranged to penetrate the fixing plate (1), the stripping plate (2) and the insert (21), and the outlet end (62) of the hot runner (6) abuts against the front mold core (31); A runner (7), the runner (7) connecting the hot runner (6) and the product cavity (4) and penetrating the front mold core (31); A heating element (8), wherein the heating element (8) is used to heat the hot runner body (5).

2. The injection mold according to claim 1, characterized in that: It also includes a bushing (11) and a fixing seat (12), wherein the bushing (11) is embedded in the top of the fixing plate (1), and the fixing seat (12) is embedded in the bottom of the fixing plate (1) and penetrates the stripping plate (2) and the insert (21), the bottom surface of the fixing seat (12) and the top surface of the front mold core (31) are on the same horizontal plane, the bushing (11), the fixing plate (1) and the fixing seat (12) are jointly provided with a receiving cavity (9) for installing the hot runner body (5), and the fixing seat (12) is provided with a through hole (121), and the through hole (121) is connected to the hot runner (6) and the branch channel (7).

3. The injection mold according to claim 2, characterized in that: The heating element (8) is arranged in the accommodating cavity (9), and the heating element (8) is arranged along the circumference of the hot runner body (5).

4. The injection mold according to claim 2, characterized in that: A buffer space (10) is reserved between one side of the outlet end (62) of the hot runner body (5) and the fixing seat (12), and the buffer space (10) is in communication with the hot runner (6) and the through hole (121).

5. The injection mold according to claim 4, characterized in that: The outlet end (62) comprises a plurality of jet openings (63), and the plurality of jet openings (63) are arranged at an angle.

6. The injection mold according to claim 5, characterized in that: The jet port (63) is arranged at an angle of 10°-70° to the vertical direction.

7. The injection mold according to claim 4, characterized in that: The hot runner body (5) is provided with a sealing portion (53), the sealing portion (53) is arranged in the buffer space (10), and the sealing portion (53) is interference-fitted with an inner wall of the buffer space (10).

8. The injection mold according to claim 2, characterized in that: The hot runner body (5) is provided with a clamping portion (54), one side of the clamping portion (54) being clamped and abutted against the inner wall of the bushing (11), and the other side of the clamping portion (54) being clamped and abutted against the inner wall of the fixing plate (1).

9. The injection mold according to claim 1, characterized in that: The flow channel (7) comprises a connected transverse flow channel (71), a plurality of oblique flow channels (72) and a vertical flow channel (73); the transverse flow channel (71) is connected to the hot runner (6); the oblique flow channel (72) corresponds to the vertical flow channel (73) in a one-to-one manner; the transverse flow channel (71) and the plurality of oblique flow channels (72) are arranged between the front mold core (31) and the insert (21); the vertical flow channel (73) penetrates the front mold core (31); and the vertical flow channel (73) is arranged corresponding to and connected to the product cavity (4).

10. The injection mold according to claim 9, characterized in that: The ends of the cross flow channel (71) extend to both sides and form cold material grooves (74).

Images