Forming mold structure of injection mold

Abstract

The utility model discloses a forming mold structure of an injection mold, which comprises a lower mold, a mounting frame is mounted at the top of the lower mold, and a convex mold is further mounted in the inner area of the mounting frame; a cooling assembly is arranged in the mounting frame and the male die, the cooling assembly comprises a first cooling part, the first cooling part is arranged in the mounting frame, the direction of the first cooling part is the same as that of the mounting frame, and an input port of the first cooling part is located on one side of the lower die; the second cooling part is arranged in the male die, and an input port of the second cooling part is located on the other side of the lower die; the first cooling part and the second cooling part are not in contact with each other; according to the utility model, the layout of the cooling channels is reasonably designed, so that the cooling liquid can uniformly flow through each area of the mold, uniform heat dissipation of an injection molding product is ensured, the problems of warping, deformation and the like are avoided, a plurality of cooling channels can be formed in the forming mold, and particularly, effective heat dissipation is ensured in a heat concentration area; and the defects of an existing structure in the aspect of heat dissipation are overcome.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and specifically relates to a molding die structure for injection molds. Background Technology

[0002] The molding die structure of an injection mold refers to the core part of the mold used for plastic molding. It is the key structure that injects molten plastic and cools it to solidify it into a specified shape. A complete injection mold typically consists of two main parts: the molding die and the operating parts, such as the demolding device and venting system. Among these, the molding die structure is the most critical part of the mold, directly determining the shape, size, and quality of the molded part. Molding dies are generally classified into single-cavity molds and multi-cavity molds depending on the specific application requirements.

[0003] Existing molding die structures are difficult to effectively control the temperature of the die at high production rates, resulting in uneven cooling in certain areas of the die. This affects the dimensional accuracy and surface quality of the molded parts, causing problems such as warping and deformation. Therefore, they have significant limitations in practical use and have room for improvement. Utility Model Content

[0004] The purpose of this invention is to provide a molding die structure for injection molds to solve the problem mentioned in the background art that existing molding dies are difficult to effectively and uniformly dissipate heat from products during production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding die structure for an injection mold, including a lower die, a mounting frame mounted on the top, and a punch mounted inside the mounting frame; a cooling assembly is provided inside the mounting frame and the punch, the cooling assembly including a first cooling section disposed inside the mounting frame and aligned with the mounting frame, the input port of the first cooling section being located on one side of the lower die; and a second cooling section disposed inside the punch, the input port of the second cooling section being located on the other side of the lower die; the first cooling section and the second cooling section do not contact each other, achieving rapid cooling through both, and also achieving rapid cooling in areas with concentrated high temperatures, ensuring uniform cooling of the injection molded product.

[0006] Preferably, the bottom of the mounting frame is hollow and has an annular groove. The first cooling section includes a cooling ring pipe placed in the annular groove. The bottom end of the cooling ring pipe is connected to a connecting pipe. The connecting pipe extends into the interior of the lower mold and its end extends into the exterior of the lower mold. In use, external low-temperature gas or liquid is injected through the connecting pipe and conducted into the cooling ring pipe. The cooling ring pipe cools the mounting frame, and the injection-molded product attached to the mounting frame is also cooled simultaneously.

[0007] Preferably, the bottom of the punch is hollow, and the second cooling section includes a coil disposed inside the punch. The coil has a disc-shaped structure, which facilitates comprehensive cooling of the punch. In injection molding, the punch has the highest heat, so the disc-shaped coil can achieve rapid cooling and ensure that the injection molded product at the mounting frame cools down synchronously.

[0008] Preferably, the end of the coil is connected to an inclined tube, the end of the inclined tube is connected to a main tube, the bottom end of the main tube is connected to a connecting pipe two, the bottom end of the connecting pipe two extends through the other side of the connecting pipe two, and cooling is achieved by introducing low temperature gas or liquid.

[0009] Preferably, multiple punches are provided, and each punch has a coil inside. Multiple inclined tubes share a main tube to achieve the common injection of cold air or cryogenic liquid.

[0010] Preferably, the top of the lower mold is also provided with an upper mold, and the inner top surface of the upper mold is provided with a groove that is the same as the mounting frame and the punch in position, shape and size, so as to realize injection molding.

[0011] Preferably, the upper mold has integrated guide pillars at the four corners inside, and holes are opened at the four corners of the top surface of the lower mold. The guide pillars are movably inserted into these holes to ensure that the vertical direction of the lower mold and the upper mold does not shift.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the layout of the cooling channels is rationally designed to ensure that the coolant can flow evenly through all areas of the mold, guaranteeing uniform heat dissipation for the injection molded product and avoiding problems such as warping and deformation. Furthermore, multiple cooling channels can be formed within the molding mold, especially in areas where heat is concentrated, ensuring effective heat dissipation. This overcomes the shortcomings of existing structures in terms of heat dissipation and ensures product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the lower mold structure of this utility model;

[0015] Figure 2 This is a bottom view of the present invention;

[0016] Figure 3 This is a schematic diagram of the cooling component structure of this utility model;

[0017] Figure 4 This is a top view of the connection between the cooling component and the mounting frame of this utility model.

[0018] In the picture:

[0019] 100. Lower mold; 101. Mounting frame; 102. Punch; 103. Annular groove;

[0020] 200. Connecting pipe 1; 201. Cooling ring pipe;

[0021] 300. Connecting pipe 2; 301. Main pipe; 302. Inclined pipe; 303. Coil;

[0022] 400. Upper mold. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a molding die structure for an injection mold, including...

[0025] The lower mold 100 has a mounting frame 101 installed on its top, and a punch 102 is also installed in the inner area of ​​the mounting frame 101.

[0026] A cooling assembly is provided within the mounting frame 101 and the punch 102. This cooling assembly includes...

[0027] The first cooling section is located inside the mounting frame 101 and has the same orientation as the mounting frame 101. The input port of the first cooling section is located on one side of the lower mold 100.

[0028] The second cooling section is provided inside the punch 102, and the input port of the second cooling section is located on the other side of the lower die 100.

[0029] The first and second cooling sections do not come into contact with each other, and rapid cooling is achieved through both. At the same time, rapid cooling can also be achieved in areas with concentrated high temperatures, ensuring uniform cooling of the injection molded product.

[0030] In this embodiment, preferably, the bottom of the mounting frame 101 is hollow and has an annular groove 103. The first cooling section includes a cooling ring pipe 201 placed in the annular groove 103. The bottom end of the cooling ring pipe 201 is connected to a connecting pipe 200. The connecting pipe 200 penetrates into the interior of the lower mold 100 and extends to the exterior of the lower mold 100. In use, external low-temperature gas or liquid is injected from the connecting pipe 200 and conducted into the cooling ring pipe 201. The cooling ring pipe 201 cools the mounting frame 101, and the injection molded product attached to the mounting frame 101 is also cooled simultaneously.

[0031] In this embodiment, preferably, the bottom of the punch 102 is hollow, and the second cooling section includes a coil 303 disposed inside the punch 102. The coil 303 has a disc-shaped structure, which facilitates the overall cooling of the punch 102. During injection molding, the punch 102 has the highest heat, so the disc-shaped coil 303 can achieve rapid cooling and ensure that the injection molded product at the mounting frame 101 cools down synchronously.

[0032] In this embodiment, preferably, the end of the coil 303 is connected to an inclined tube 302, and the end of the inclined tube 302 is connected to a main tube 301. The bottom end of the main tube 301 is connected to a connecting tube 300, and the bottom end of the connecting tube 300 extends through the other side of the connecting tube 300 to achieve cooling by introducing low-temperature gas or liquid.

[0033] In this embodiment, preferably, multiple punches 102 are provided, and each punch 102 has a coil 303 inside. Multiple inclined tubes 302 share a main tube 301 to realize the common injection of cold air or cryogenic liquid.

[0034] In this embodiment, preferably, the top of the lower mold 100 is also provided with an upper mold 400, and the upper mold 400 has a groove on its inner top surface that is the same as the mounting frame 101 and the punch 102 in position, shape and size, so as to realize injection molding.

[0035] In this embodiment, preferably, the upper mold 400 has integrated guide pillars at the four corners inside, and the lower mold 100 has holes at the four corners of the top surface of the lower mold 100. The guide pillars are movably inserted into these holes to ensure that the lower mold 100 and the upper mold 400 do not shift in the vertical direction.

[0036] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die structure for an injection mold, comprising: The lower mold (100) has a mounting frame (101) installed on its top, and a punch (102) is also installed in the inner area of ​​the mounting frame (101); Its features are: A cooling assembly is provided within the mounting frame (101) and the punch (102), the cooling assembly comprising: The first cooling section is disposed within the mounting frame (101) and has the same orientation as the mounting frame (101). The input port of the first cooling section is located on one side of the lower mold (100). A second cooling section is provided inside the punch (102), and the inlet of the second cooling section is located on the other side of the lower die (100); The first cooling section and the second cooling section do not come into contact with each other.

2. The molding die structure of an injection mold according to claim 1, characterized in that: The bottom of the mounting frame (101) is hollow and has an annular groove (103). The first cooling part includes a cooling ring pipe (201) placed in the annular groove (103). The bottom end of the cooling ring pipe (201) is connected to a connecting pipe (200). The connecting pipe (200) extends into the interior of the lower mold (100) and its end extends into the exterior of the lower mold (100). In use, external low-temperature gas or liquid is injected from the connecting pipe (200) and conducted into the cooling ring pipe (201).

3. The molding die structure of an injection mold according to claim 2, characterized in that: The bottom of the punch (102) is hollow, and the second cooling section includes a coil (303) disposed inside the punch (102), which has a disc-shaped structure.

4. The molding die structure of an injection mold according to claim 3, characterized in that: The end of the coil (303) is connected to an inclined tube (302), and the end of the inclined tube (302) is connected to a main tube (301). The bottom end of the main tube (301) is connected to a connecting tube two (300), and the bottom end of the connecting tube two (300) extends through the other side of the connecting tube two (300).

5. The molding die structure of an injection mold according to claim 3, characterized in that: Multiple punches (102) are provided, and each punch (102) has a coil (303) inside. Multiple inclined tubes (302) share a main tube (301).

6. The molding die structure of an injection mold according to claim 1, characterized in that: The lower mold (100) is also provided with an upper mold (400) on its top surface. The upper mold (400) has a groove on its inner top surface that is the same as the mounting frame (101) and the punch (102) in terms of position, shape and size.

7. The molding die structure of an injection mold according to claim 6, characterized in that: The upper mold (400) has integrated guide pillars at the four corners inside, and holes are opened at the four corners of the top surface of the lower mold (100), which are movably inserted by the guide pillars.

Images