Injection mold
By setting up multiple cooling pipes in the injection mold, the cooling of the master and male molds is ensured to be synchronized, and the problem of poor molding quality caused by uneven cooling is solved, and more uniform cooling and higher molding quality are achieved.
Patent Information
- Application Number
- CN202420660590.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-02
AI Technical Summary
Existing injection molds are unevenly cooled during the cooling process, resulting in poor molding quality and product may experience warping and deformation.
An injection mold is designed, including a plurality of cooling pipes being provided in the female mold and the male mold. The contact area between the first cold material pipe and the female mold is greater than the contact area between the third cold material pipe and the male mold, and passes through the multiple sides. The cooling pipes arranged between the mold clamping planes achieve more uniform cooling.
It achieves a more uniform cooling of injection molded products, reduces deformation risk and improves molding quality.
Smart Images
Figure CN222156446U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding mold. Background Art
[0002] Injection molds generally consist of two parts: a male mold and a female mold. During the injection molding process, the mold is clamped on the injection molding machine, and the heated plastic is injected into the mold cavity by the nozzle. In order for the plastic to flow in the mold cavity, the plastic needs to be heated to a certain temperature. After the injection molding is completed, it is necessary to wait for the plastic to cool and set before the mold can be opened to take out the injection molded product. Generally, in order to improve the injection molding efficiency and product quality, a cooling device is installed in the mold to cool the injection molded product.
[0003] like Fig.13 As shown, a cleaning tray is shown, which can be used to carry battery shells for cleaning operations. The cleaning tray is hollow and includes an outer frame 41, an inner frame 42 arranged in the outer frame 41, and a skeleton 45 arranged in the inner frame 42. The skeleton 45 is a mesh structure, and a limit frame 43 is arranged at its intersection. The limit frame 43 is provided with a positioning column 44 for positioning the battery shell. Of course, the cleaning tray is not limited to carrying battery shells.
[0004] The skeleton 45 is composed of a plurality of ribs, and the strength of the rib structure is poorer than that of the plate structure. When the injection molded product is not cooled uniformly, the molding quality is poor, and the appearance of the injection molded product may be affected during the process of removing the injection molded product. For example, after the injection molded product is taken out, the injection molded product may warp or deform.
[0005] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content
[0006] The utility model aims to provide an injection mold which can cool the injection molded product more evenly.
[0007] In order to achieve the above-mentioned utility model object, the utility model proposes an injection mold, which includes:
[0008] A mother mold, including a mother mold core;
[0009] A male mold, comprising a male mold core, wherein a mold cavity for accommodating an injection molded product is formed between the male mold core and the female mold core; and
[0010] The cooling mechanism comprises a first cold material pipe and a third cold material pipe, wherein the first cold material pipe comprises a first main flow pipe arranged in the female mold core; and the third cold material pipe comprises a third main flow pipe arranged in the male mold core;
[0011] The contact area between the first cold material pipe and the female mold core is greater than the contact area between the second cold material pipe and the male mold core.
[0012] Further, the number of the third cold material pipes arranged in the male mold core and the fourth cold material pipes arranged in the runner plate is less than the number of the first cold material pipes arranged in the female mold core; and / or,
[0013] The diameter of the first main flow pipe is larger than that of the third main flow pipe; and / or,
[0014] The length of all the first cold material pipes located in the female mold core is greater than the length of all the third cold material pipes located in the male mold core.
[0015] Further, the first cold material pipe includes a first water inlet pipe, a first water outlet pipe and a first diverter pipe, the two ends of the first main pipe are respectively connected to the first water inlet pipe and the first water outlet pipe through the first diverter pipe, the first diverter pipe is vertically arranged with the first main pipe, the first water inlet pipe and the first water outlet pipe are parallel to the first main pipe, the first main pipe is parallel to the mold plane of the male mold core and the female mold core, and the first diverter pipe is perpendicular to the mold plane;
[0016] The first main pipe is in the shape of a straight pipe, and the cooling mechanism includes a plurality of first cold material pipes arranged at intervals along a first direction, the first direction is parallel to the mold clamping plane, and the first direction is consistent with the length direction or the width direction of the injection molded product.
[0017] Furthermore, the mother mold includes a mother mold plate, the mother mold core is connected to the mother mold plate and is arranged in the mother mold plate, the first water inlet pipe and the first water outlet pipe are arranged in the mother mold plate, and the first diversion pipe extends from the mother mold plate to the mother mold core.
[0018] Furthermore, the distance between the first main flow pipe and the injection molded product does not exceed **mm, and the distance between the third main flow pipe and the injection molded product does not exceed **mm.
[0019] Furthermore, the third cold material pipe includes a third water inlet pipe, a third water outlet pipe and a third diversion pipe. The two ends of the third main pipe are respectively connected to the third water inlet pipe and the third water outlet pipe through a third diversion pipe. The third diversion pipe is vertically arranged to the third main pipe, and the third water inlet pipe and the third water outlet pipe are parallel to the third main pipe. The third main pipe is parallel to the mold plane of the male mold core and the female mold core, and the third diversion pipe is perpendicular to the mold plane.
[0020] Furthermore, the male mold includes a male mold plate, the male mold core is connected to the male mold plate and is arranged in the male mold plate, the third water inlet pipe and the third water outlet pipe are arranged in the male mold plate, and the third diversion pipe extends from the male mold plate to the male mold core.
[0021] Further, the third main pipe is in a straight pipe shape, and the cooling mechanism includes a plurality of third cold material pipes arranged at intervals along a first direction, the first direction is parallel to the mold clamping plane, and the first direction is consistent with the length direction or width direction of the injection molded product; or,
[0022] The third main pipe includes a straight pipe portion and a curved pipe portion, and both ends of the straight pipe portion are connected to the third branch pipe through a curved pipe portion respectively. The cooling mechanism includes two symmetrically arranged third cold material pipes.
[0023] Furthermore, the mother mold also includes a runner plate connected to the mother mold core and a gate sleeve arranged on the runner plate, the runner plate and the mother mold cooperate to form a runner connected to the mold cavity, and the cooling mechanism also includes a plurality of fourth cold material pipes arranged at intervals along the first direction, and the fourth cold material pipe includes a fourth main flow pipe arranged in the runner plate.
[0024] Furthermore, the fourth cold material pipe includes a fourth water inlet pipe, a fourth water outlet pipe and a fourth diversion pipe, and both ends of the fourth main pipe are respectively connected to the fourth water inlet pipe and the fourth water outlet pipe through a fourth diversion pipe, the fourth diversion pipe is vertically arranged to the fourth main pipe, the fourth water inlet pipe and the fourth water outlet pipe are parallel to the fourth main pipe, the fourth main pipe is parallel to the mold plane of the male mold core and the female mold core, and the fourth diversion pipe is perpendicular to the mold plane.
[0025] Further, the first main flow pipe and the third main flow pipe extend beyond both ends of the injection molded product;
[0026] The first main flow pipe and the third main flow pipe have the same length.
[0027] Furthermore, the female mold further includes a female mold plate, the male mold further includes a male mold plate, the cooling mechanism further includes a second cold material pipe, and the corners of the male mold plate and / or the female mold plate are provided with the second cold material pipe;
[0028] The second cold material pipe includes a second water inlet pipe, a second water outlet pipe, a second diversion pipe and a second main pipe arranged parallel to the mold plane, and the two ends of the second main pipe are connected to the second water inlet pipe and the second water outlet pipe through a second diversion pipe.
[0029] Furthermore, the second water inlet pipe and the second water outlet pipe are arranged on the same outer side surface of the injection mold, and the second diverter pipe and the second water inlet pipe are respectively exposed on two adjacent outer side surfaces of the injection mold;
[0030] The injection mold further comprises a guide assembly connected to the male mold and the female mold, and the second cold material pipe is located on a side of the guide assembly close to the female mold core and / or a side of the male mold core.
[0031] Compared with the prior art, the utility model has the following beneficial effects: the injection mold includes a female mold, a male mold and a cooling mechanism, the female mold includes a female mold core; the male mold includes a male mold core, and a mold cavity for accommodating an injection molded product is formed between the male mold core and the female mold core; the cooling mechanism includes a first cold material pipe and a third cold material pipe, the first cold material pipe includes a first main flow pipe arranged in the female mold core; the third cold material pipe includes a third main flow pipe arranged in the male mold core, and the first main flow pipe and the third main flow pipe extend to both ends beyond the injection molded product. By arranging the first cold material pipe and the third cold material pipe in the female mold core and the male mold core, and the contact area between the first cold material pipe and the female mold core is greater than the contact area between the second cold material pipe and the male mold core, the cooling of the male mold core and the female mold core can be made more synchronous, and a more uniform cooling of the injection molded product can be achieved, thereby reducing the deformation risk of the injection molded product and improving the molding quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 It is a schematic diagram of an injection mold of an embodiment of the utility model.
[0033] Figure 2 yes Figure 1 The schematic diagram of the injection mold shown is a schematic diagram of the injection mold without the female mold base plate, the female mold plate and the male mold plate.
[0034] Figure 3 yes Figure 1 The injection mold shown is a cross-sectional view without the ejector mechanism.
[0035] Figure 4 yes Figure 1 The schematic diagram of the positions of the female mold plate, female mold core, male mold core and first cold material pipe of the injection mold is shown.
[0036] Figure 5 yes Figure 1 The schematic diagram of the position of the male mold plate, the male mold core and the third cold material pipe of the injection mold is shown.
[0037] Figure 6 yes Figure 1 A schematic diagram of the cooling mechanism 3 of the injection mold is shown.
[0038] Figure 7 yes Figure 1 A schematic diagram of a first cooling tube of an injection mold is shown.
[0039] Figure 8 yes Figure 1 Schematic diagram of the third cooling tube of the injection mold shown.
[0040] Fig. 9 It is a schematic diagram of the connection between the male mold plate, the male mold core and the third cooling pipe of an injection mold in an embodiment of the utility model.
[0041] Fig.10 yes Fig. 9 Schematic diagram of the third cold material pipe.
[0042] Fig.11 yes Figure 1 Schematic diagram of the fourth cooling tube of the injection mold is shown.
[0043] Fig.12 yes Figure 1 Schematic diagram of the second cooling tube of the injection mold is shown.
[0044] Fig.13 It is a schematic diagram of an injection molded product of an embodiment of the utility model. DETAILED DESCRIPTION
[0045] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0046] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.
[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0048] like Figures 1 to 5 As shown, an injection mold corresponding to a preferred embodiment of the utility model includes a female mold 1, a male mold 2 and a cooling mechanism 3.
[0049] The mother mold 1 comprises a mother mold core 10 , a runner plate 12 and a sprue bushing 13 . The sprue bushing 13 is connected to a nozzle of an injection molding machine. A runner is arranged between the mother mold core 10 and the runner plate 12 .
[0050] The male mold 2 includes a male mold core 20 , and a mold cavity 100 for accommodating the injection molded product 4 is formed between the male mold core 20 and the female mold core 10 , and the mold cavity 100 is communicated with the flow channel.
[0051] The cooling mechanism 3 includes a first cold material pipe 30 and a third cold material pipe 32, and the first cold material pipe 30 and the third cold material pipe 32 contain cooling liquid (such as cooling water); the first cold material pipe 30 includes a first main flow pipe 300 arranged in the female mold core 10; the third cold material pipe 32 includes a third main flow pipe 320 arranged in the male mold core 20, and the contact area between the first cold material pipe 30 and the female mold core 10 is greater than the contact area between the third cold material pipe 32 and the male mold core 20.
[0052] The heated plastic enters the runner through the nozzle and flows into the mold cavity 100 under the guidance of the runner; after the injection molding is completed, the injection molded product 4 is in a high temperature state and needs to be cooled. By arranging the first cold material pipe 30 and the third cold material pipe 32 in the female mold core 10 and the male mold core 20, the male mold core 20 and the female mold core 10 can be cooled quickly, thereby allowing the injection molded product to be cooled quickly, and the upper and lower sides can be cooled more evenly. Furthermore, the female mold 1 is connected to the nozzle, and the runner is arranged between the female mold core 10 and the runner plate 12. The temperature of the female mold 1 is usually higher than that of the male mold 2. The contact area between the first cold material pipe 30 and the female mold core 10 is larger than the contact area between the third cold material pipe 32 and the male mold core 20, which is beneficial to accelerate the cooling of the female mold core 10 and make it more synchronized with the cooling of the male mold core 20, ensuring that the injection molded product 4 as a whole can be cooled more evenly, thereby achieving better all-round uniform cooling of the injection molded product, reducing the deformation risk of the injection molded product 4, and improving the molding quality.
[0053] Optionally, the contact area between the cold material pipe and the male mold core 20 and the female mold core 10 can be changed by adjusting the length of the cold material pipe located in the male mold core 20 and the female mold core 10, or changing the diameter of the cold material pipe located in the male mold core 20 and the female mold core 10, or the number of cold material pipes located in the male mold core 20 and the female mold core 10.
[0054] In some embodiments, the total length of all the first cold material tubes 30 located in the female mold core 10 is greater than the total length of all the third cold material tubes 32 located in the male mold core 20, so that the contact area between the first cold material tubes 30 and the female mold core 10 is greater than the contact area between the third cold material tubes 32 and the male mold core 20. In these embodiments, the diameters of the first mainstream tube 300 and the third mainstream tube 320 can be the same or different, and the number of the first cold material tubes 30 and the third cold material tubes 32 can be the same or different.
[0055] In other embodiments, the diameter of the first mainstream pipe 300 is set to be larger than the diameter of the third mainstream pipe 320, so that the contact area between the first cold material pipe 30 and the female mold core 10 is larger than the contact area between the third cold material pipe 32 and the male mold core 20. In these embodiments, the number of first mainstream pipes 300 and the number of third mainstream pipes 320 may be the same or different, and the total length of all the first cold material pipes 30 located in the female mold core 10 and the total length of all the third cold material pipes 32 located in the male mold core 20 may be the same or different.
[0056] In some other embodiments, the number of the first cold material pipes 30 is greater than the number of the third cold material pipes 32, so that the contact area between the first cold material pipes 30 and the female mold core 10 is greater than the contact area between the third cold material pipes 32 and the male mold core 20. In these embodiments, the diameters of the first main flow pipe 300 and the third main flow pipe 320 may be the same or different, and the total length of all the first cold material pipes 30 located in the female mold core 10 and the total length of all the third cold material pipes 32 located in the male mold core 20 may be the same or different.
[0057] It is understandable that, according to actual conditions, uniform cooling of the injection molded product 4 can be achieved by limiting one or two of the diameter, length and number of the cold material pipe to a certain value and changing the other two or another parameter. Figure 2 and Figure 6 In the embodiment shown, the first main flow pipe 300 and the third main flow pipe 320 have the same length, the number of the first cold material pipes 30 is greater than the number of the third cold material pipes 32, and the diameter of the first main flow pipe 300 is greater than the diameter of the third main flow pipe 320, so that the cooling of the female mold core 10 and the male mold core 20 is more synchronous, so that the injection molded product 4 is evenly cooled, and the molding quality is improved. Optionally, the first main flow pipe 300 and the third main flow pipe 320 extend beyond both ends of the injection molded product 4, and further optionally, extend to the two end surfaces of the male mold core 20 and the female mold core 10, so that the temperature of each part of the male mold core 20 and the female mold core 10 is more consistent, and the cooling of the injection molded product 4 is more comprehensive.
[0058] like Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the first cold material pipe 30 includes a first water inlet pipe 301, a first water outlet pipe 302 and a first diverter pipe 303. The two ends of the first main flow pipe 300 are respectively connected to the first water inlet pipe 301 and the first water outlet pipe 302 through a first diverter pipe 303. The first diverter pipe 303 is vertically arranged with the first main flow pipe 300. The first water inlet pipe 301 and the first water outlet pipe 302 are arranged in parallel with the first main flow pipe 300. The first main flow pipe 300 is arranged in parallel with the mold plane 14 of the male mold core 20 and the female mold core 10. The mold plane 14 is perpendicular to the mold closing direction Z of the injection mold, and parallel to the length direction X and width direction Y of the injection mold. The length direction X and width direction Y of the injection mold are consistent with the length direction and width direction of the injection molded product 4. The first shunt pipe 303 is perpendicular to the mold closing plane 14. The first main pipe 300 is in the shape of a straight pipe. The cooling mechanism 3 includes a plurality of first cold material pipes 30 arranged at intervals along the first direction. The first direction is parallel to the mold closing plane 14, which can be consistent with the length direction X or the width direction Y. Figure 2 , the first direction is consistent with the length direction X.
[0059] The coolant enters the first branch pipe 303 connected to the first water inlet pipe 301 through the first water inlet pipe 301, flows through the first branch pipe 303 into the first main pipe 300, then flows to the first branch pipe 303 connected to the first water outlet pipe 302, and finally flows out of the first cold material pipe 30 from the first water outlet pipe 302. A mold temperature controller is arranged outside the injection molding machine, and the mold temperature controller is connected to the first water inlet pipe 301 and the first water outlet pipe 302 through a water pipe. The temperature of the coolant can be adjusted by the mold temperature controller, and the coolant continues to flow through the first cold material pipe 30 under the action of the mold temperature controller. The contact area between the first main pipe 300 and the mother mold core 10 is larger than the contact area between the first water inlet pipe 301 and the mother mold core 10, the contact area between the first water outlet pipe 302 and the mother mold core 10, and the contact area between the first branch pipe 303 and the mother mold core 10, and the first main pipe 300 is arranged parallel to the mold closing plane 14, so that the contact area between the first cold material pipe 30 and the mother mold core 10 is larger, which can quickly and evenly cool the mother mold core 10, and then cool the injection molded product 4.
[0060] like Figure 2 , Figure 4 , Figure 6 and Figure 7 In the illustrated embodiment, the first branch pipe 303 is disposed above the first main pipe 300, and a plurality of first cold material pipes 30 are arranged parallel to each other and at intervals. Optionally, each first cold material pipe 30 is arranged equidistantly, so that the cooling of the injection molded product 4 is more uniform.
[0061] The first mainstream pipe 300 and the third mainstream pipe 320 are respectively arranged on the side of the female mold core 10 close to the mold cavity 100 and the side of the male mold core 20 close to the mold cavity 100, which can quickly absorb the heat transferred from the injection molded product 4 to the female mold core 10 and the male mold core 20, thereby improving the cooling effect and enabling the injection molded product 4 to be cooled quickly, thereby reducing the risk of product deformation.
[0062] like Figure 1 and Figure 4 As shown, the mother mold 1 includes a mother mold plate 11, a mother mold core 10 is connected to the mother mold plate 11 and is arranged in the mother mold plate 11, a first water inlet pipe 301 and a first water outlet pipe 302 are arranged in the mother mold plate 11, and a first diverter pipe 303 extends from the mother mold plate 11 to the mother mold core 10, and optionally, extends downward from the top of the mother mold core 10 to the mother mold core 10. A part of the first diverter pipe 303 and the first water inlet pipe 301 and the first water outlet pipe 302 are arranged in the mother mold plate 11, and the mother mold plate 11 is cooled, so that the entire mold can be cooled quickly, reducing the impact of high temperature on the life of the mold.
[0063] The third cold material pipe 32 includes a third water inlet pipe 321, a third water outlet pipe 322 and a third diverter pipe 323. The two ends of the third main pipe 320 are respectively connected to the third water inlet pipe 321 and the third water outlet pipe 322 through a third diverter pipe 323. The third diverter pipe 323 is vertically arranged to the third main pipe 320, and the third water inlet pipe 321 and the third water outlet pipe 322 are parallel to the third main pipe 320. The third main pipe 320 is parallel to the mold plane 14 of the male mold core 20 and the female mold core 10, and the third diverter pipe 323 is perpendicular to the mold plane 14.
[0064] like Figure 2 , Figure 5 , Figure 6 and Figure 8 In the illustrated embodiment, the third branch pipe 323 is disposed below the third main pipe 320 , and a plurality of third cold material pipes 32 are disposed parallel to each other and at intervals.
[0065] In one embodiment, if Figure 8 As shown, the third main pipe 320 is in a straight pipe shape, and the cooling mechanism 3 includes a plurality of third cold material pipes 32 arranged at intervals along the first direction. Optionally, each third cold material pipe 32 is arranged at an equal distance, so that the injection molded product 4 is cooled more evenly.
[0066] In another embodiment, if Fig. 9 and Fig.10 As shown, the third main pipe 320 includes a straight pipe portion 3200 and a curved pipe portion 3201 , and both ends of the straight pipe portion 3200 are connected to the third branch pipe 323 through a curved pipe portion 3201 respectively, and the cooling mechanism 3 includes two symmetrically arranged third cold material pipes 32 . Fig.10In the embodiment shown, the curved tube portion 3201 is L-shaped with a 90° bend, and a curved tube portion 3201 is symmetrically connected to both ends of the straight tube portion 3200. The curved tube portion 3201 includes a first portion 3202 and a second portion 3203, which are vertically arranged, and the first portion 3202 and the straight tube portion 3200 are mutually perpendicular, and the second portion 3203 is arranged parallel to the straight tube portion 3200 and extends toward the side where the middle of the straight tube portion 3200 is located. The two second portions 3203 are coaxially arranged, and the straight tube portion 3200 and the curved tube portion 3201 are in the same plane, which is parallel to the mold plane 14. The third main flow pipe 320 is arranged as a whole in the male mold core 20, increasing the contact area between the third main flow pipe 320 and the male mold core 20, thereby uniformly cooling the injection molded product 4.
[0067] like Figure 3 and Figure 5 As shown, the male mold 2 includes a male mold plate 21, a male mold core 20 is connected to the male mold plate 21 and is arranged in the male mold plate 21, a third water inlet pipe 321 and a third water outlet pipe 322 are arranged in the male mold plate 21, and a third diversion pipe 323 extends from the male mold plate 21 to the male mold core 20, and optionally, extends upward from the bottom of the male mold core 20 to the inside of the male mold core 20; on the one hand, this design can facilitate production; on the other hand, the male mold plate 21 can be cooled so that the entire mold can be cooled quickly.
[0068] like Figure 2 , Figure 3 , Figure 6 As shown, the cooling mechanism 3 further includes a plurality of fourth cold material pipes 33 arranged at intervals along the first direction, and the fourth cold material pipes 33 include fourth main flow pipes 330 arranged in the flow channel plate 12 .
[0069] Further, such as Figure 3 and Fig.11 As shown, the fourth cold material pipe 33 includes a fourth water inlet pipe 331, a fourth water outlet pipe 332 and a fourth diverter pipe 333. Both ends of the fourth main pipe 330 are respectively connected to the fourth water inlet pipe 331 and the fourth water outlet pipe 332 through a fourth diverter pipe 333. The fourth diverter pipe 333 is vertically arranged with the fourth main pipe 330, the fourth water inlet pipe 331 and the fourth water outlet pipe 332 are parallelly arranged with the fourth main pipe 330, the fourth main pipe 330 is parallelly arranged with the mold plane 14 of the male mold core 20 and the female mold core 10, the fourth diverter pipe 333 is perpendicular to the mold plane 14, and the fourth main pipe 330 is in the shape of a straight pipe.
[0070] The fourth cold material pipe 33 can cool the runner plate 12. On the one hand, it can accelerate the cooling of the plastic in the runner between the runner plate 12 and the mother mold core 10 and shorten the injection time. On the other hand, it can cool the runner plate 12 and reduce the heat transferred from the runner plate 12 to the mother mold core 10, which is beneficial to the uniform and rapid cooling of the entire mold and the injection molded product 4. Optionally, at least one fourth cold material pipe 33 is provided on each side of the sprue bushing 13. Further, optionally, the fourth cold material pipes 33 on both sides of the sprue bushing 13 are symmetrical.
[0071] like Figure 2 As shown, the cooling mechanism 3 further includes a second cold material pipe 31 , and the corners of the male mold plate 21 and / or the female mold plate 11 are provided with the second cold material pipe 31 .
[0072] For further reference, Fig.12 The second cold material pipe 31 includes a second water inlet pipe 311 arranged parallel to the mold plane 14, a second water outlet pipe 312 arranged parallel to the mold plane 14, a second diversion pipe 313 arranged parallel to the mold plane 14, and a second main pipe 310 arranged perpendicular to the mold plane 14. Both ends of the second main pipe 310 are connected to the second water inlet pipe 311 and the second water outlet pipe 312 through a second diversion pipe 313 respectively.
[0073] The second water inlet pipe 311 and the second water outlet pipe 312 are arranged on the same outer side of the injection mold (i.e. Figure 1 and Fig. 9 The front surface 16 in the injection mold), the second diversion pipe 313 and the second water inlet pipe 311 are respectively exposed on the two adjacent outer side surfaces (the front surface 16 and the side surface 17) of the injection mold; the injection mold also includes a guide component 5 connected to the male mold 2 and the female mold 1, and the guide component 5 plays a limiting role in the process of closing the injection mold to ensure that the male mold 2 and the female mold cooperate with each other to form a sealed mold cavity 100, and the second cold material pipe 31 is located on the side of the guide component 5 close to the center of the mold.
[0074] like Figure 2 As shown, a second cold material pipe 31 is provided on the outer side of the corners of the male mold plate 21 and the female mold plate 11, which cooperates with the first cold material pipe 30 and the third cold material pipe 32 to take away the heat transferred from the female mold core 10 to the female mold plate 11, accelerate the cooling of the female mold core 10 and the entire mold, thereby helping to quickly cool the injection molded product 4.
[0075] Optionally, the number of third cold material tubes 32 arranged in the male mold core 20 and the number of fourth cold material tubes 33 arranged in the runner plate 12 is smaller than the number of first cold material tubes 30 arranged in the female mold core 10, so that the contact area between the first cold material tube 30 and the female mold core 10 is greater than the contact area between the third cold material tube 32 and the male mold core 20. Figure 2In the illustrated embodiment, the number of the first cold material pipes 30 is six, the number of the third cold material pipes 32 is four, and the number of the fourth cold material pipes 33 is two, which is beneficial for synchronous cooling of the female mold core 10 and the male mold core 20, ensuring that the injection molded product 4 as a whole can be cooled more evenly.
[0076] like Figures 1 to 3 As shown, the female mold 1 also includes a female mold base plate 15 connected to the female mold plate 11, and the male mold 2 includes an ejection mechanism 22, a male mold base plate 23, and a mold foot 24 arranged between the male mold plate 21 and the male mold base plate 23. The ejection mechanism 22 is provided with an ejector pin, which can eject the injection molded product 4 from the mold cavity 100.
[0077] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.
Claims
1. An injection mold, characterized in that: include: A mother mold (1), comprising a mother mold core (10); A male mold (2) comprising a male mold core (20), wherein a mold cavity (100) for accommodating an injection molded product (4) is formed between the male mold core (20) and the female mold core (10); and The cooling mechanism (3) comprises a first cold material pipe (30) and a third cold material pipe (32), wherein the first cold material pipe (30) comprises a first main flow pipe (300) arranged in the female mold core (10); and the third cold material pipe (32) comprises a third main flow pipe (320) arranged in the male mold core (20); The contact area between the first cold material pipe (30) and the female mold core (10) is greater than the contact area between the third cold material pipe (32) and the male mold core (20).
2. The injection mold according to claim 1, characterized in that: The number of the third cold material pipes (32) is less than the number of the first cold material pipes (30); and / or, The diameter of the first main flow pipe (300) is greater than the diameter of the third main flow pipe (320); and / or, The total length of all the first cold material pipes (30) located in the female mold core (10) is greater than the total length of all the third cold material pipes (32) located in the male mold core (20).
3. The injection mold according to claim 1, characterized in that: The first cold material pipe (30) comprises a first water inlet pipe (301), a first water outlet pipe (302) and a first diverter pipe (303); the two ends of the first main pipe (300) are respectively connected to the first water inlet pipe (301) and the first water outlet pipe (302) through the first diverter pipe (303); the first diverter pipe (303) is arranged perpendicularly to the first main pipe (300); the first water inlet pipe (301) and the first water outlet pipe (302) are arranged parallel to the first main pipe (300); the first main pipe (300) is arranged parallel to the mold plane (14) of the male mold core (20) and the female mold core (10); and the first diverter pipe (303) is perpendicular to the mold plane (14); The first main pipe (300) is in the shape of a straight pipe, and the cooling mechanism (3) comprises a plurality of first cold material pipes (30) arranged at intervals along a first direction, the first direction is parallel to the mold plane (14), and the first direction is consistent with the length direction or the width direction of the injection molded product (4).
4. The injection mold according to claim 3, characterized in that: The mother mold (1) comprises a mother mold plate (11), the mother mold core (10) is connected to the mother mold plate (11) and is arranged in the mother mold plate (11), the first water inlet pipe (301) and the first water outlet pipe (302) are arranged in the mother mold plate (11), and the first diversion pipe (303) extends from the mother mold plate (11) to the mother mold core (10).
5. The injection mold according to claim 1, characterized in that: The third cold material pipe (32) includes a third water inlet pipe (321), a third water outlet pipe (322) and a third diverter pipe (323). The two ends of the third main pipe (320) are respectively connected to the third water inlet pipe (321) and the third water outlet pipe (322) through a third diverter pipe (323). The third diverter pipe (323) is vertically arranged with the third main pipe (320). The third water inlet pipe (321) and the third water outlet pipe (322) are parallelly arranged with the third main pipe (320). The third main pipe (320) is parallelly arranged with the mold plane (14) of the male mold core (20) and the female mold core (10), and the third diverter pipe (323) is vertically arranged with the mold plane (14).
6. The injection mold according to claim 5, characterized in that: The male mold (2) comprises a male mold plate (21), the male mold core (20) is connected to the male mold plate (21) and is arranged in the male mold plate (21), the third water inlet pipe (321) and the third water outlet pipe (322) are arranged in the male mold plate (21), and the third diversion pipe (323) extends from the male mold plate (21) to the male mold core (20).
7. The injection mold according to claim 6, characterized in that: The third main pipe (320) is in the shape of a straight pipe, and the cooling mechanism (3) comprises a plurality of third cold material pipes (32) arranged at intervals along a first direction, the first direction is parallel to the mold plane (14), and the first direction is consistent with the length direction or the width direction of the injection molded product (4); or, The third main flow pipe (320) comprises a straight pipe portion (3200) and a curved pipe portion (3201), and both ends of the straight pipe portion (3200) are connected to the third branch pipe (323) via a curved pipe portion (3201), respectively. The cooling mechanism (3) comprises two symmetrically arranged third cold material pipes (32).
8. The injection mold according to claim 1, characterized in that: The mother mold (1) also includes a runner plate (12) connected to the mother mold core (10) and a gate sleeve (13) arranged on the runner plate (12), the runner plate (12) and the mother mold (1) cooperate to form a runner connected to the mold cavity (100), and the cooling mechanism (3) also includes a plurality of fourth cold material pipes (33) arranged at intervals along the first direction, and the fourth cold material pipe (33) includes a fourth main flow pipe (330) arranged in the runner plate (12).
9. The injection mold according to claim 8, characterized in that: The fourth cold material pipe (33) includes a fourth water inlet pipe (331), a fourth water outlet pipe (332) and a fourth diverter pipe (333); the two ends of the fourth main pipe (330) are respectively connected to the fourth water inlet pipe (331) and the fourth water outlet pipe (332) through a fourth diverter pipe (333); the fourth diverter pipe (333) is vertically arranged with the fourth main pipe (330); the fourth water inlet pipe (331) and the fourth water outlet pipe (332) are parallelly arranged with the fourth main pipe (330); the fourth main pipe (330) is parallelly arranged with the mold plane (14) of the male mold core (20) and the female mold core (10); and the fourth diverter pipe (333) is vertically arranged with the mold plane (14).
10. The injection mold according to claim 1, characterized in that: The first main flow pipe (300) and the third main flow pipe (320) extend beyond both ends of the injection molded product (4); The first main flow pipe (300) and the third main flow pipe (320) have the same length.
11. The injection mold according to any one of claims 1 to 10, characterized in that: The female mold (1) further comprises a female mold plate (11), the male mold (2) further comprises a male mold plate (21), the cooling mechanism (3) further comprises a second cold material pipe (31), and the second cold material pipe (31) is provided at a corner of the male mold plate (21) and / or the female mold plate (11); The second cold material pipe (31) includes a second water inlet pipe (311), a second water outlet pipe (312), a second diverter pipe (313) and a second main pipe (310) arranged parallel to the mold plane (14) of the male mold core (20) and the female mold core (10), and a second main pipe (310) arranged perpendicular to the mold plane (14), and the two ends of the second main pipe (310) are connected to the second water inlet pipe (311) and the second water outlet pipe (312) through a second diverter pipe (313).
12. The injection mold according to claim 11, characterized in that: The second water inlet pipe (311) and the second water outlet pipe (312) are arranged on the same outer side surface of the injection mold, and the second diverter pipe (313) and the second water inlet pipe (311) are respectively exposed on two adjacent outer side surfaces of the injection mold; The injection mold further comprises a guide assembly (5) connected to the male mold (2) and the female mold (1), and the second cold material pipe (31) is located on a side of the guide assembly (5) close to the female mold core (10) and / or a side of the male mold core (20).