Injection mold device having mold cooling effect

Abstract

This utility model discloses an injection mold device with mold cooling effect, including a mold base one, a mold base two, positioning guide pillars, and positioning guide sleeves. The mold base one has a mold core on the side near the mold base two, and the mold base two has a mold cavity on the side near the mold base one. An ejector plate is installed in a hollow groove on the opposite side of the mold base one and mold base two, and several ejector pins that slide through the mold base one are mounted on the surface of the ejector plate. Several cooling channels are longitudinally opened inside both the mold base one and mold base two. A heat-conducting plate is also embedded on the surface of the ejector plate, and the ejector pins pass through the heat-conducting plate. Several heat dissipation fins are connected to the surface of the heat-conducting plate, and several cooling fans are installed at the bottom of the hollow groove. This utility model improves the cooling effect on the ejector pin area by setting the heat-conducting plate in direct contact with the ejector pins, using thermally conductive grease to reduce thermal resistance, and using wavy heat dissipation fins to effectively increase the heat dissipation area. Combined with forced convection from the cooling fans, this improves the cooling effect on the ejector pin area.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to an injection mold device with mold cooling effect. Background Technology

[0002] In the existing technology, the cooling of injection molds is mainly distributed in the core area, while the ejector pin area is ignored. The main function of the ejector pin is to force the product out of the core after the mold is opened. Due to the dense arrangement of ejector pins, it is impossible to open conventional cooling water channels. Moreover, the ejector pins need to reciprocate at high frequency, so they cannot be fixedly connected to water pipes, resulting in poor heat dissipation and cooling effect in the ejector pin area of ​​the existing injection mold.

[0003] To address this issue, we propose an injection mold device with mold cooling function. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold device with mold cooling effect to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An injection mold device with mold cooling effect includes a mold base one, a mold base two, positioning guide pillars and positioning guide sleeves. The mold base one is provided with a mold core on the side near the mold base two, and the mold base two is provided with a mold cavity on the side near the mold base one. An ejector plate is provided in a hollow groove on the side of the mold base one opposite to the mold base two, and a number of ejector pins that slide through the mold base one are installed on the surface of the ejector plate. A number of cooling water channels are longitudinally opened through the interior of both the mold base one and the mold base two, and the cooling water channels are distributed at equal intervals along the vertical direction. A branch pipe is installed at both ends of the cooling water channels that exit the mold base. The branch pipes in the same row are connected to the same branch pipe, and a connector is installed at the bottom end of the branch pipe.

[0007] The surface of the ejector plate is also inlaid with a heat-conducting plate, the ejector pin passes through the heat-conducting plate, and several heat dissipation fins are connected to the surface of the heat-conducting plate. Several cooling fans are installed at the bottom of the hollowed-out groove.

[0008] In a further embodiment, the cooling water channels in the first mold frame are formed with the mold core, and the cooling water channels in the second mold frame are formed with the mold cavity.

[0009] In a further embodiment, the cooling water channels within the mold frame and the ejector pin holes within the mold frame for the ejector pins to slide are distributed alternately.

[0010] In a further embodiment, the heat dissipation fins are arranged longitudinally and staggered with the positions of the ejector pins.

[0011] In a further embodiment, the heat dissipation fins extend along the airflow direction of the cooling fan, and the heat dissipation fins adopt a wavy structure.

[0012] In a further embodiment, the connection between the heat-conducting plate and the ejector pin is filled with thermally conductive silicone grease.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention improves the cooling effect on the ejector pin area by setting a heat-conducting plate that is in direct contact with the ejector pin, using thermally conductive grease to reduce thermal resistance, and using wavy heat dissipation fins to effectively increase the heat dissipation area. Combined with a cooling fan for forced convection, it reduces the occurrence of problems such as product sticking to the mold and ejector pin jamming caused by heat accumulation in the ejector pin. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the mold frame of this utility model;

[0017] Figure 3 This is a schematic diagram of the second structure of the mold frame of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of this utility model after partial cross-section;

[0019] Figure 5 This is a schematic diagram of the mounting structure of the ejector plate, ejector pin, and heat-conducting plate of this utility model.

[0020] In the diagram: 1. Mold base one; 2. Mold base two; 21. Mold cavity; 3. Positioning guide post; 4. Positioning guide sleeve; 5. Cooling water channel; 6. Branch pipe; 7. Diverter pipe; 71. Connector; 8. Ejector plate; 9. Ejector pin; 10. Heat conduction plate; 101. Heat dissipation fins; 102. Thermal grease; 11. Mold core; 12. Hollowed-out groove; 13. Cooling fan. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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 Figure 1-5 An injection mold device with mold cooling effect includes a mold base 1 and a mold base 2, positioning guide pillars 3 and positioning guide sleeves 4. Mold base 1 has a mold core 11 in the middle of its side near mold base 2, and positioning guide pillars 3 are installed at its four corners. Mold base 2 has a mold cavity 21 in the middle of its side near mold base 1, and positioning guide sleeves 4 are installed through its four corners. When the mold is closed, the positioning guide pillars 3 slide into the positioning guide sleeves 4 to ensure the alignment of the two mold bases. A hollow groove 12 is located on the opposite side of mold base 1 and mold base 2, penetrating the upper, lower, front, and rear sides of mold base 1. Several cooling channels are longitudinally opened inside both mold base 1 and mold base 2. The cooling water channels 5 run through the outer wall of the mold frame from front to back, and are arranged at equal intervals along the vertical direction. The cooling water channels 5 in mold frame 1 follow the contour of the mold core 11, and the cooling water channels 5 in mold frame 2 follow the contour of the mold cavity 21, which improves the uniformity of cooling. Both ends of the cooling water channels 5 that pass through the mold frame are equipped with branch pipes 6. The branch pipes 6 in the same row are connected to the same branch pipe 7. The branch pipe 7 on the side of mold frame 1 or mold frame 2 serves as the cooling water inlet pipe, and the branch pipe 7 on the other side serves as the cooling water outlet pipe. The bottom end of the branch pipe 7 is equipped with a connector 71, which facilitates the connection of external pipes to the cooling water supply and recovery system.

[0025] A hollow groove 12 contains an ejector plate 8, and several sliding horizontal ejector pins 9 are mounted on the surface of the ejector plate 8, which slide horizontally through the mold frame 1. The mold frame 1 has ejector pin holes at the points where the ejector pins 9 pass through. The ejector pins 9 are distributed around the mold core 11. The ejector plate 8 is externally connected to a telescopic drive cylinder or electric cylinder. The output shaft of the telescopic drive passes through the left end face of the mold frame 1 and connects to the ejector plate 8 to facilitate the ejection of the molded part. A heat-conducting plate 10 is also embedded on the surface of the ejector plate 8. The ejector pins 9 pass through the heat-conducting plate 10 to ensure unobstructed ejection stroke. The connection between the heat-conducting plate 10 and the ejector pins 9 is filled with thermally conductive silicone grease 102 to reduce thermal resistance and improve heat transfer rate. The surface of the mold base 12 is connected to several heat dissipation fins 101. The heat dissipation fins 101 are arranged longitudinally and staggered with the position of the ejector pin 9. Several cooling fans 13 are installed at the bottom of the hollow groove 12. The heat dissipation fins 101 extend along the air outlet direction of the cooling fans 13 and adopt a wave-shaped structure to effectively increase the heat dissipation area. When the ejector plate 8 is fully ejected, the heat dissipation fins 101 will not contact the mold base 1, leaving a safe space and avoiding movement and scratches. The cooling water channel 5 in the mold base 1 and the ejector pin hole in the mold base 1 for the ejector pin 9 to slide are staggered to avoid mutual interference. At the same time, the cooling water channel 5 can also dissipate heat for the ejector pin 9.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection mold device with mold cooling effect, comprising a mold base one (1), a mold base two (2), positioning guide pillars (3) and positioning guide sleeves (4), wherein the mold base one (1) is provided with a mold core (11) on the side near the mold base two (2), and the mold base two (2) is provided with a mold cavity (21) on the side near the mold base one (1), wherein an ejector plate (8) is provided in a hollow groove (12) on the side of the mold base one (1) opposite to the mold base two (2), and a plurality of ejector pins (9) that slide through the mold base one (1) are mounted on the surface of the ejector plate (8), characterized in that: Both mold frame one (1) and mold frame two (2) have several cooling water channels (5) that run longitudinally through them. The cooling water channels (5) are arranged at equal intervals along the vertical direction. Both ends of the cooling water channels (5) that pass through the mold frame are equipped with branch pipes (6). The branch pipes (6) in the same column are connected to the same branch pipe (7). The bottom end of the branch pipe (7) is equipped with a connector (71). The surface of the ejector plate (8) is also inlaid with a heat-conducting plate (10), the ejector (9) penetrates the heat-conducting plate (10), and the surface of the heat-conducting plate (10) is connected with a number of heat dissipation fins (101). A number of cooling fans (13) are installed at the bottom of the hollow groove (12).

2. The injection mold apparatus having a mold cooling effect according to claim 1, characterized by: The cooling water channel (5) and mold core (11) in the first mold frame (1) are opened in accordance with the shape, and the cooling water channel (5) and mold cavity (21) in the second mold frame (2) are opened in accordance with the shape.

3. The injection mold apparatus having a mold cooling effect according to claim 1, characterized by: The cooling water channels (5) in the mold frame (1) are interspersed with the ejector pin holes in the mold frame (1) for the ejector pins (9) to slide.

4. The injection mold device with mold cooling effect according to claim 1, characterized in that: The heat dissipation fins (101) are arranged longitudinally and staggered with the position of the pins (9).

5. The injection mold apparatus having a mold cooling effect according to claim 1, wherein: The heat dissipation fins (101) extend along the airflow direction of the cooling fan (13), and the heat dissipation fins (101) adopt a wave-shaped structure.

6. The injection mold apparatus having a mold cooling effect according to claim 1, wherein: The connection between the heat-conducting plate (10) and the ejector pin (9) is filled with thermally conductive silicone grease (102).

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