Injection mold

Abstract

The present application provides an injection mold, which includes a moving mold, a fixed mold, and a driving component. Among them, the moving mold includes a moving template and a plurality of upper mold cores respectively installed on the moving template. The fixed mold includes a fixed template, a plurality of lower mold cores respectively used for cooperating with the plurality of upper mold cores for injection molding, and a cooling component respectively used for cooling the products in each upper mold core. In the present application, by arranging a cooling component between two adjacent lower mold cores, after a semi-finished product is formed by injection molding of one upper mold core and the corresponding lower mold core, the driving component drives the moving template to rotate so that the upper mold core is aligned with the cooling component, and the cooling component can cool the semi-finished product; then, the driving component can drive the moving template to rotate again to the working position aligned with the next lower mold core to perform the next injection molding process. Compared with the traditional continuous injection molding process, by continuously performing the cyclic operation steps of injection-cooling-injection-cooling, the quality of multi-process injection molding can be improved, and thus the yield of the product can be improved.

Description

Technical Field

[0001] This application belongs to the field of mold equipment, and more specifically, relates to an injection mold. Background Art

[0002] Currently, in order to prepare products with a relatively large thickness (thickness exceeding 40 mm), multi-station injection molds are usually used for injection molding in multiple times. Compared with the traditional one-time injection molding process, the preparation cycle can be shortened. In the application of multi-station injection molds, in order to improve the production efficiency of products, a continuous injection method is often adopted, that is, after the injection mold completes one injection process, it is transferred to the secondary injection station for secondary injection, and the multiple injection processes are continuously operated without interruption. Since the product is not fully cooled after each injection process, the injection quality formed between adjacent two injection processes is poor, thereby affecting the yield of the product. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide an injection mold to solve the problem of low product yield caused by continuous injection of multi-station injection molds in related technologies.

[0004] To achieve the above purpose, the technical solution adopted in the embodiments of this application is:

[0005] Provide an injection mold, including:

[0006] A moving mold, including a moving template and a plurality of upper mold cores respectively installed on the moving template;

[0007] A fixed mold, including a fixed template, a plurality of lower mold cores used for injection molding in cooperation with each of the upper mold cores respectively, and a cooling component used for cooling the products in each of the upper mold cores; the plurality of lower mold cores and several of the cooling components are respectively installed on the fixed template;

[0008] A driving component, connected to the moving template, and used to drive the moving template to rotate so that the plurality of upper mold cores are respectively aligned with each of the lower mold cores and each of the cooling components.

[0009] In one embodiment, the plurality of upper mold cores are arranged in a circular array, the combination of the plurality of lower mold cores and the cooling components is arranged in a circular array, and the sum of the number of the lower mold cores and the cooling components is equal to the number of the upper mold cores.

[0010] In one embodiment, each of the cooling components includes a base installed on the fixed template, a plurality of exhaust nozzles for exhausting air to cool the product, and a flow dividing column for communicating with an external air supply device; each of the exhaust nozzles and the flow dividing column are respectively installed on the base, and several exhaust channels for communicating the flow dividing column with each of the exhaust nozzles are provided in the base.

[0011] In one embodiment, each of the exhaust nozzles includes a guiding cylinder having an accommodating chamber and a sealing cap installed in the accommodating chamber. An annular rib that divides the accommodating chamber into a first chamber and a second chamber is provided in the guiding cylinder. The second chamber is located between the first chamber and the corresponding exhaust passage, and the second chamber communicates with the corresponding exhaust passage. The sealing cap includes a cap body for blocking the first chamber and a guiding column connected to the cap body, and the guiding column extends into the second chamber.

[0012] In one embodiment, each of the exhaust nozzles further includes a positioning ring and a spring respectively sleeved on the corresponding guiding column. Each of the positioning rings and each of the springs are respectively located in the corresponding second chamber. One end of each spring abuts against the corresponding positioning ring, and the other end of each spring abuts against the corresponding annular rib.

[0013] In one embodiment, each of the exhaust nozzles further includes a control disk installed below the corresponding guiding column. Each of the control disks is disposed in the corresponding second chamber. An opening that communicates the corresponding second chamber with the corresponding exhaust passage is formed in each of the control disks.

[0014] In one embodiment, the cross-sectional area of each of the first chambers is gradually increased from the direction of the second chamber to the first chamber.

[0015] In one embodiment, a first groove is formed in the side surface of the base facing the fixed template. The air inlet of each exhaust passage is located at the bottom surface of the first groove, and the air outlet of each exhaust passage communicates with the corresponding exhaust nozzle. The flow dividing column is disposed in the first groove, and a plurality of exhaust holes are formed in the flow dividing column.

[0016] In one embodiment, a positioning groove surrounding the first groove is further formed in the side surface of the base facing the fixed template, and a sealing gasket for filling the gap between the base and the fixed template is installed in the positioning groove.

[0017] In one embodiment, a second groove for accommodating the product is formed in the side surface of the base facing away from the fixed template. The air outlet of each exhaust nozzle is located at the bottom surface of the second groove.

[0018] One or more of the above technical solutions in the embodiments of the present application have at least one of the following technical effects: By arranging a cooling component between two adjacent lower die cores, after one upper die core and the corresponding lower die core are injection-molded to form a semi-finished product, the driving component drives the moving template to rotate so that the upper die core is aligned with the cooling component, and the cooling component can cool the semi-finished product; then, the driving component can drive the moving template to rotate again to the working position aligned with the next lower die core to perform the next injection molding process. Compared with the traditional continuous injection molding process, by continuously performing the cyclic operation steps of injection-cooling-injection-cooling, the quality of multi-process injection molding can be improved, and thus the yield of the product can be increased. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 The front view of the moving die and the fixed die provided by the embodiment of the present application;

[0021] Figure 2 The structural schematic diagram of the connection between the cooling component and the product provided by the embodiment of the present application;

[0022] Figure 3 The structural schematic of the cooling component provided by the embodiment of the present application Figure 1 ;

[0023] Figure 4 The structural schematic of the cooling component provided by the embodiment of the present application Figure 2 ;

[0024] Figure 5 The cross-sectional schematic diagram of the cooling component provided by the embodiment of the present application;

[0025] Figure 6 The exploded schematic diagram of the exhaust nozzle provided by the embodiment of the present application;

[0026] Figure 7 The cross-sectional schematic diagram of the exhaust nozzle provided by the embodiment of the present application;

[0027] Figure 8 The cross-sectional schematic diagram of the guide cylinder provided by the embodiment of the present application.

[0028] Among them, the main reference signs in each drawing are as follows:

[0029] 1 - moving die; 11 - moving template; 12 - first upper cavity; 13 - second upper cavity; 14 - third upper cavity;

[0030] 2 - fixed mold; 21 - fixed mold plate; 22 - first lower cavity; 23 - second lower cavity;

[0031] 3 - cooling component; 31 - base; 311 - first groove; 312 - positioning groove; 313 - second groove; 32 - exhaust nozzle; 321 - guiding cylinder; 3211 - accommodating chamber; 3212 - annular rib; 32120 - through hole; 3213 - first chamber; 3214 - second chamber; 322 - sealing cap; 3221 - cap body; 3222 - guide post; 323 - positioning ring; 324 - spring; 325 - control disk; 3250 - opening; 326 - clamping ring; 33 - shunt column; 34 - exhaust passage. Detailed implementation manners

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0036] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] Throughout the specification, reference to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the phrases "in one embodiment" or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. Additionally, in one or more embodiments, the specific features, structures, or characteristics may be combined in any suitable manner.

[0038] Please refer to Figure 1 , and now the injection mold provided by the present application will be described. The injection mold includes a moving mold 1 and a fixed mold 2 that cooperates with the moving mold 1. Among them, the moving mold 1 includes a moving template 11 and a plurality of upper mold cores respectively installed on the moving template 11. The fixed mold 2 includes a fixed template 21, a plurality of lower mold cores for respectively cooperating with the plurality of upper mold cores for injection molding, and a cooling assembly 3 for respectively cooling the products in each upper mold core; the plurality of lower mold cores and several cooling assemblies 3 are respectively installed on the fixed template 21. The sum of the number of the lower mold cores and the cooling assemblies 3 is equal to the number of the upper mold cores, and the plurality of upper mold cores, the plurality of lower mold cores, and several cooling assemblies 3 are arranged in a one-to-one correspondence. The plurality of upper mold cores are arranged in a circular array, and the combination of the plurality of lower mold cores and the cooling assemblies 3 is arranged in a circular array. In other embodiments, the arrangement manner of the plurality of upper mold cores and the arrangement manner of the combination of the plurality of lower mold cores and the cooling assemblies 3 can be adjusted according to actual needs, and no unique limitation is made here.

[0039] The injection mold further includes a driving component (not shown in the figure) connected to the moving template 11. The driving component can drive the moving template 11 to rotate clockwise or counterclockwise, so that multiple upper die cores can be respectively aligned with the corresponding lower die cores and the cooling component 3. Among them, the driving component can be a motor; the multiple lower die cores have different structures and functions, which are not uniquely defined here. With this structure, by arranging the cooling component 3 between two adjacent lower die cores, after one upper die core is injection-molded with the corresponding lower die core to form a semi-finished product, the driving component drives the moving template 11 to rotate so that the upper die core is aligned with the cooling component 3, and the cooling component 3 can cool the semi-finished product; then, the driving component can drive the moving template 11 to rotate again to the working position aligned with the next lower die core to perform the next injection molding process. Compared with the traditional continuous injection molding process, by continuously repeating the injection-cooling-injection-cooling operation steps, the quality of multi-process injection molding can be improved, and thus the yield of the product can be increased.

[0040] In one embodiment, please refer to Figure 1 , the number of upper die cores is three, and the three upper die cores are distributed in an equilateral triangle; the number of lower die cores is two, and the number of cooling components 3 is one. The two lower die cores and the cooling component 3 are distributed in an equilateral triangle. With this structure, a double-station secondary forming process can be realized through the two lower die cores, and thus products such as automotive headlight lenses with a thickness greater than 40 mm can be prepared. Through the secondary forming process and in cooperation with the cooling of the cooling component 3, compared with the traditional single forming process, the forming cycle can be reduced, and the production efficiency and product quality can be greatly improved.

[0041] For the convenience of description, the working principle of the injection mold will be described with three upper die cores, two lower die cores and one cooling component 3. Please refer to Figure 1 , the three upper die cores are respectively named the first upper cavity 12, the second upper cavity 13 and the third upper cavity 14, and the two lower cavities are respectively named the first lower cavity 22 and the second lower cavity 23. Define the initial position: the first upper cavity 12 is aligned with the first lower cavity 22, the second upper cavity 13 is aligned with the cooling component 3, and the third upper cavity 14 is aligned with the second lower cavity 23.

[0042] The first step: The moving mold 1 and the fixed mold 2 are closed, and the injection molding machine injects and forms in the first upper cavity 12 and the first lower cavity 22 to form the first semi-finished product;

[0043] The second step: The moving mold 1 and the fixed mold 2 are opened, and the driving component drives the moving template 11 to rotate 120°, so that the first upper cavity 12 is aligned with the cooling component 3. At this time, the second upper cavity 13 is aligned with the second lower cavity 23, and the third upper cavity 14 is aligned with the first lower cavity 22;

[0044] Step 3: The moving mold 1 and the fixed mold 2 are closed, and the injection molding machine injects and forms a second semi-finished product in the third upper cavity 14 and the first lower cavity 22; meanwhile, the cooling component 3 cools the first semi-finished product in the first upper cavity 12.

[0045] Step 4: The moving mold 1 and the fixed mold 2 are opened, and the driving component drives the moving template 11 to rotate 120° again (in the same rotation direction as the previous time), so that the first upper cavity 12 is aligned with the second lower cavity 23. At this time, the second upper cavity 13 is aligned with the first lower cavity 22, and the third upper cavity 14 is aligned with the cooling component 3.

[0046] Step 5: The moving mold 1 and the fixed mold 2 are closed, and the injection molding machine injects and forms a third semi-finished product in the second upper cavity 13 and the first lower cavity 22; meanwhile, the cooling component 3 cools the second semi-finished product in the third upper cavity 14, and the injection molding machine continues to inject and form in the first upper cavity 12 and the second lower cavity 23, that is, secondary injection molding is carried out on the basis of the first semi-finished product to form the final first finished product.

[0047] Step 6: The moving mold 1 and the fixed mold 2 are opened, the ejection mechanism ejects the first finished product in the first upper cavity 12, and the driving component drives the moving template 11 to rotate 240° in the opposite direction (opposite to the previous rotation direction) to the initial position, thus completing a secondary injection molding cycle. At this time, the third semi-finished product is contained in the second upper cavity 13, the second semi-finished product is contained in the third upper cavity 14, and the first upper cavity 12 is empty, which is convenient for repeating the single injection molding in the next cycle.

[0048] The above only gives the process steps of the secondary injection molding composed of three upper mold cores, two lower mold cores and a cooling component 3. Based on this, the angle by which the driving component drives the moving template 11 to rotate is an integer multiple of 120°. Of course, in other embodiments, the numbers of the upper mold core, the lower mold core and the cooling component 3 can also be adjusted according to actual needs. The injection mold can not only realize the secondary injection molding process, but also realize the multi-station and multi-time injection molding processes, such as the three-time injection molding process, the four-time injection molding process, etc. The working principle is the same as the above secondary injection molding process, and will not be elaborated here one by one.

[0049] In one embodiment, please refer to Figures 3 to 5, as a specific implementation of the injection mold provided in this application, each cooling component 3 includes a base 31 mounted on the fixed template 21, several exhaust nozzles 32 for exhausting air to cool the product, and a flow dividing column 33 for communicating with an external air supply device; each exhaust nozzle 32 and flow dividing column 33 are respectively mounted on the base 31, and several exhaust channels 34 communicating the flow dividing column 33 with each exhaust nozzle 32 are provided in the base 31. Among them, the number of exhaust nozzles 32 is set in one-to-one correspondence with the exhaust channels 34; the number of exhaust nozzles 32 can be adjusted according to actual needs and is not uniquely limited here. With this structure, by respectively mounting several exhaust nozzles 32 and flow dividing columns 33 on the base 31, and the exhaust channels 34 connecting the flow dividing column 33 with each exhaust nozzle 32. Under the action of an external air supply device, the flow dividing column 33 can introduce cooling gas into each exhaust nozzle 32 through each exhaust channel 34, and the cooling gas discharged from several exhaust nozzles 32 can directly cool the semi-finished product. Compared with the traditional water cooling method, the conduction step of using the mold itself as an intermediate heat conduction medium is omitted, and the cooling gas directly acts on the surface of the semi-finished product for cooling, which can cool the semi-finished product more quickly and effectively, achieving the purpose of shortening the entire molding cycle of the product.

[0050] In one embodiment, please refer to Figure 5 , each exhaust channel 34 is arranged along the thickness direction of the base 31, and several exhaust channels 34 are arranged in parallel. With this structure, it is convenient to manufacture each exhaust channel 34, and the preparation process is simple. By arranging several exhaust channels 34 in parallel, centralized cooling of the product in the same direction can be realized, thereby improving the cooling efficiency. Of course, in other embodiments, the size, distribution configuration, etc. of each exhaust channel 34 can be adjusted according to actual needs and are not uniquely limited here.

[0051] In one embodiment, please refer to Figure 5 , Figure 7 and Figure 8, as a specific embodiment of the injection mold provided by the present application, each exhaust nozzle 32 includes a guiding cylinder 321 having an accommodation chamber 3211 and a sealing cap 322 installed in the accommodation chamber 3211. An annular rib 3212 is provided in the guiding cylinder 321 to divide the accommodation chamber 3211 into a first chamber 3213 and a second chamber 3214. The second chamber 3214 is located between the first chamber 3213 and the corresponding exhaust passage 34, and the second chamber 3214 communicates with the corresponding exhaust passage 34; the sealing cap 322 includes a cap body 3221 for blocking the first chamber 3213 and a guide post 3222 connected to the cap body 3221, and the guide post 3222 extends into the second chamber 3214. In this structure, the cooling gas entering from each exhaust passage 34 can fill the corresponding second chamber 3214. The continuously input cooling gas in the second chamber 3214 can push the guide post 3222 upward, and the cap body 3221 gradually separates from the first chamber 3213. The cooling gas can be discharged into the first chamber 3213 through the gap between the guide post 3222 and the annular rib 3212, and the cooling gas discharged from the first chamber 3213 can directly act on the surface of the semi-finished product. When the cooling gas supply to each exhaust passage 34 stops, the guide post 3222 can descend under the action of its own gravity, and the cap body 3221 can block the gap between the guide post 3222 and the annular rib 3212. The cooling gas can be filtered by the guiding cylinder 321 and the sealing cap 322 to ensure the cleanliness of the cooling gas acting on the surface of the semi-finished product, thereby improving the quality of the product.

[0052] In one embodiment, please refer to Figure 6 and Figure 7 , as a specific embodiment of the injection mold provided by the present application, each exhaust nozzle 32 further includes a positioning ring 323 and a spring 324 respectively sleeved on the corresponding guide post 3222. Each positioning ring 323 and each spring 324 are respectively located in the corresponding second chamber 3214. One end of each spring 324 abuts against the corresponding positioning ring 323, and the other end of each spring 324 abuts against the corresponding annular rib 3212. In this structure, when the guide post 3222 moves up and down in the through hole 32120 of the annular rib 3212, the positioning ring 323 and the spring 324 can play a certain limiting and buffering role, avoiding the phenomenon that the sealing cap 322 is pushed out due to excessive inflation amount of the exhaust passage 34, thereby improving the reliability of the up and down movement of the sealing cap 322. Among them, the positioning ring 323 is fixed on the guide post 3222 by a clamping ring 326, so as to facilitate the disassembly, installation and maintenance of the positioning ring 323. This is not the only limitation here.

[0053] In one embodiment, please refer to Figure 6 and Figure 7, as a specific implementation of the injection mold provided in this application, each exhaust nozzle 32 further includes a control disk 325 installed below the corresponding guide post 3222, and each control disk 325 is disposed in the corresponding second chamber 3214; an opening 3250 communicating the corresponding second chamber 3214 with the corresponding exhaust passage 34 is formed on each control disk 325. With this structure, the flow rate of the cooling gas input into the exhaust passage 34 can be adjusted through the opening 3250 on the control disk 325. Among them, the diameter of the opening 3250 can be equal to the diameter of the through hole 32120 of the annular rib 3212. Of course, in other embodiments, the diameter of the opening 3250 can also be greater than or less than the diameter of the through hole 32120, and no unique limitation is made here.

[0054] In one embodiment, please refer to Figure 8 , as a specific implementation of the injection mold provided in this application, the cross-sectional area of each first chamber 3213 is gradually increased from the direction of the second chamber 3214 to the first chamber 3213. With this structure, when the sealing cap 322 moves upward, a channel is formed between the outer periphery of the cap body 3221 and the inner peripheral surface of the first chamber 3213, and this channel can communicate with the gap formed between the outer peripheral surface of the guide post 3222 and the inner peripheral surface of the through hole 32120, facilitating the outflow of the cooling gas. In other embodiments, the first chamber 3213 can also be of other configurations, such as a cuboid shape, a cube shape, a cylinder shape, etc. When the cap body 3221 completely extends out of the first chamber 3213, it can ensure the outflow of the cooling gas, and no unique limitation is made here.

[0055] In one embodiment, please refer to Figure 4 and Figure 5 , as a specific implementation of the injection mold provided in this application, a first groove 311 is formed on the side of the base 31 facing the fixed mold plate 21. The air inlet of each exhaust passage 34 is located at the bottom surface of the first groove 311, and the air outlet of each exhaust passage 34 is communicated with the corresponding exhaust nozzle 32; a flow dividing column 33 is disposed in the first groove 311, and a plurality of exhaust holes (not shown in the figure) are formed on the flow dividing column 33. With this structure, when an external air supply device supplies air to the flow dividing column 33, the cooling gas can flow into the first groove 311 through the plurality of exhaust holes, and the cooling gas in the first groove 311 can enter the exhaust nozzle 32 through the air inlet of each exhaust passage 34 to perform the jet cooling operation. Connecting the flow dividing column 33 with each exhaust passage 34 through the first groove 311 is convenient for processing and manufacturing.

[0056] In one embodiment, please refer to Figure 4, as a specific implementation of the injection mold provided by this application, a positioning groove 312 surrounding the first groove 311 is further formed on the side of the base 31 facing the fixed template 21, and a sealing gasket (not shown in the figure) for filling the gap between the base 31 and the fixed template 21 is installed in the positioning groove 312. With this structure, the gap between the base 31 and the fixed template 21 is filled by the sealing gasket, which can prevent the cooling gas in the first groove 311 from overflowing and effectively prevent air leakage.

[0057] In one embodiment, please refer to Figure 3 and Figure 5 , as a specific implementation of the injection mold provided by this application, a second groove 313 for accommodating the product is formed on the side of the base 31 facing away from the fixed template 21; the air outlets of the exhaust nozzles 32 are located at the bottom surface of the second groove 313. With this structure, the second groove 313 can position the product; several exhaust nozzles 32 can achieve centralized cooling of the product, thereby improving the cooling efficiency.

[0058] In one embodiment, the cross-sectional shapes of the first groove 311 and the second groove 313 are the same, and the depth of the first groove 311 is greater than the depth of the second groove 313. With this structure, it is convenient to process and manufacture the first groove 311 and the second groove 313. The first groove 311 can be used to store cooling gas and can provide sufficient cooling gas. In other embodiments, the shapes of the first groove 311 and the second groove 313 and the depths of the first groove 311 and the second groove 313 can be adjusted according to actual needs, and are not limited uniquely here.

[0059] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. Injection mold, characterized in that, include: A movable mold, comprising a movable mold plate and a plurality of upper mold cores respectively mounted on the movable mold plate; The plurality of upper mold cores are arranged in a ring array; A fixed mold, comprising a fixed mold plate, a plurality of lower mold cores respectively used for cooperating with the upper mold cores for injection molding, and a cooling assembly respectively used for cooling the products in the upper mold cores; the plurality of lower mold cores and the plurality of cooling assemblies are respectively mounted on the fixed mold plate; A driving assembly connected to the movable die plate, and used for driving the movable die plate to rotate so that the plurality of upper die cores are aligned with the lower die cores and the cooling assemblies respectively; Each of the cooling components comprises a base mounted on the fixed template, a plurality of exhaust nozzles for exhausting air to cool the product, and a diverter column for communicating with an external air supply device; each of the exhaust nozzles and the diverter column is mounted on the base, respectively, and a plurality of exhaust channels connecting the diverter column and each of the exhaust nozzles are provided in the base; Each of the exhaust nozzles includes a guide cylinder with an accommodating chamber and a sealing cap installed in the accommodating chamber, the guide cylinder is provided with an annular rib which divides the accommodating chamber into a first chamber and a second chamber, the second chamber is located between the first chamber and the corresponding exhaust channel, and the second chamber is communicated with the corresponding exhaust channel; the sealing cap includes a cap body for sealing the first chamber and a guide column connected to the cap body, and the guide column extends into the second chamber.

2. The injection mold according to claim 1, characterized in that: The combination of the plurality of lower mold cores and the cooling assembly is arranged in a ring array, and the sum of the number of the lower mold cores and the cooling assembly is equal to the number of the upper mold cores.

3. The injection mold according to claim 1, characterized in that: Each of the exhaust nozzles also includes a positioning ring and a spring respectively mounted on the corresponding guide column, each of the positioning rings and each of the springs are respectively located in the corresponding second chamber, one end of each of the springs abuts against the corresponding positioning ring, and the other end of each of the springs abuts against the corresponding annular rib.

4. The injection mold according to claim 1, characterized in that: Each of the exhaust nozzles also includes a control panel installed below the corresponding guide column, and each of the control panels is arranged in the corresponding second chamber; each of the control panels is provided with an opening connecting the corresponding second chamber with the corresponding exhaust channel.

5. The injection mold according to claim 1, characterized in that: The cross-sectional area of ​​each of the first chambers is gradually increased in a direction from the second chamber to the first chamber.

6. The injection mold according to any one of claims 3-5, characterized in that: A first groove is provided on the side of the base facing the fixed template, the air inlet of each exhaust channel is located at the bottom of the first groove, and the air outlet of each exhaust channel is connected to the corresponding exhaust nozzle; the diverter column is arranged in the first groove, and a plurality of exhaust holes are provided on the diverter column.

7. The injection mold according to claim 6, characterized in that: A positioning groove surrounding the first groove is further formed on the side of the base facing the fixed template, and a sealing gasket for filling the gap between the base and the fixed template is installed in the positioning groove.

8. The injection mold according to any one of claims 3-5, characterized in that: A second groove for accommodating products is formed on the side of the base away from the fixed mold plate; and the air outlet of each exhaust nozzle is located at the bottom surface of the second groove.

Images