Heat conduction structure of slender insert

Abstract

The utility model discloses a heat conduction structure of a slender insert. The heat conduction structure of the slender insert comprises a mold core and the slender insert, the slender insert is a copper alloy insert and comprises a water conveying part, a first positioning part, a slender forming part and a second positioning part, the water conveying part is provided with a water well, the mold core is provided with an injection molding cavity for placing the slender forming part, and a first positioning cavity and a second positioning cavity are formed in the two ends of the injection molding cavity of a heat conduction structure of the slender insert respectively; the first positioning part of the heat conduction structure of the slender insert is embedded in the first positioning cavity, and the second positioning part of the heat conduction structure of the slender insert is embedded in the second positioning cavity, so that accurate positioning of the slender insert in the mold core is ensured, movement of the insert in the injection molding process is avoided, and the size and appearance precision of a product are ensured. And in the injection molding process, the first positioning part and the second positioning part can disperse pressure originally concentrated on the slender molding part to the two positioning parts, so that the pressure borne by the slender molding part is reduced, and the possibility of deformation of the slender molding part is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a heat conduction structure for a slender insert. Background Technology

[0002] During injection molding, water is typically used to cool the mold core or inserts adjacent to the product, allowing the molded product to cool down and be demolded. The aforementioned inserts refer to irregular mold components embedded in the mold core, serving to fix and / or fill the space between the mold cores. Common types of inserts include pins, blocks, pillars, and rings.

[0003] For example, Chinese patent CN215512076U discloses a water-cooling structure installed on the rear mold platen of a mold, used to cool inserts that are installed on the rear mold core of the rear mold platen and can form products. For slender inserts, one side of the insert is connected to the water-cooling structure, and the heat on the other side of the insert is conducted to the water-cooling structure, thereby cooling the insert. However, due to the overall slenderness of the insert, it is preferable to make it with a material with good thermal conductivity to ensure that the insert can quickly exchange heat with the water-cooling structure. However, materials with good thermal conductivity are prone to deformation under pressure, especially under heat.

[0004] In view of this, the present invention proposes a heat conduction structure for a slender insert to solve the above problems. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides a heat conduction structure for a slender insert, which can quickly cool the insert, has a faster molding cycle, and the slender insert is not easily deformed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A heat conduction structure for an elongated insert includes a mold core, an axially extending elongated insert, and a water-cooling mechanism. The elongated insert is a copper alloy insert and sequentially includes a water-cooling section, a first positioning section, an elongated forming section, and a second positioning section along the axial direction. The water-cooling section has a water well, and the water-cooling mechanism circulates cooling water from the water well. The mold core has an injection cavity for housing the elongated forming section. The outer side of the elongated forming section is used for injection molding the product. A first positioning cavity and a second positioning cavity are respectively provided at both ends of the injection cavity. The first positioning section is embedded in the first positioning cavity, and the second positioning section is embedded in the second positioning cavity.

[0008] Preferably, one end of the second positioning part is connected to the elongated forming part, and the other end of the second positioning part has a gap with the cavity wall of the second positioning cavity.

[0009] Preferably, the radial width of the second positioning part gradually decreases in the direction away from the elongated forming part; the side surface of the second positioning part is close to the cavity wall of the second positioning cavity.

[0010] Preferably, the volume of the water transporting part is greater than that of the first positioning part, the elongated forming part and the second positioning part.

[0011] Preferably, the water transporting part is provided with a water well at one end, and the other end of the water transporting part is connected with the first positioning part.

[0012] Preferably, the mold core is provided with a mounting groove in communication with the first positioning cavity, the volume of the mounting groove is smaller than that of the water transporting part, the part of the water transporting part close to the first positioning part is arranged in the mounting groove, and the part of the water transporting part away from the first positioning part protrudes outside the mold core.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The elongated insert of the utility model is a copper alloy insert, has good heat conduction performance, can rapidly take away the heat of the elongated insert through the cooling water in the water transporting mechanism in the process of injection molding, makes the product outside the elongated insert rapidly cool and form, and shortens the forming production cycle.

[0015] 2. The close cooperation of the first positioning part and the second positioning part with the first positioning cavity and the second positioning cavity in the mold core ensures the accurate positioning of the elongated insert in the mold core, avoids the movement of the insert in the process of injection molding, and guarantees the size, appearance precision and quality of the product.

[0016] 3. Moreover, the elongated forming part has the possibility of pressure deformation in the process of injection molding, the first positioning part and the second positioning part can disperse the pressure originally concentrated in the elongated forming part to the two positioning parts, reduce the pressure borne by the elongated forming part, and thus reduce the possibility of deformation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structural schematic view of the elongated insert of the utility model;

[0018] Figure 2 is the schematic view of the heat conduction structure of the elongated insert of the utility model;

[0019] Figure 3 is the schematic view of the mold core with the elongated insert of the utility model;

[0020] Figure 4 is the schematic view of the mold core without the elongated insert of the utility model;

[0021] Figure 5 is the schematic explosion of the mold core of the utility model Figure 1 ;

[0022] Figure 6 is the explosion schematic of the mold core of the utility model Figure 2 ;

[0023] The implementation, functional features and advantages of the utility model will be further described in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0024] The features and other related features of the utility model will be further described in detail through embodiments, so as to facilitate the understanding of the skilled in the art:

[0025] Referring to Figures 1-6 , an embodiment of the heat conduction structure of the elongated insert is proposed:

[0026] The heat conduction structure of the elongated insert comprises a mold core 1, an elongated insert 2 extending in the axial direction, and a water conveying mechanism 3. The elongated insert 2 is a copper alloy insert, which comprises a water conveying part 21, a first positioning part 22, an elongated forming part 23, and a second positioning part 24 in sequence in the axial direction. The water conveying part 21 is provided with a water well 211, the water conveying mechanism 3 is used for circulating the cooling water in the water well 211, the mold core 1 is provided with an injection molding cavity 11 for placing the elongated forming part 23, the outer side of the elongated forming part 23 is used for injection molding a product 6, and the injection molding cavity 11 is respectively provided with a first positioning cavity 12 and a second positioning cavity 13 at both ends. The first positioning part 22 is embedded in the first positioning cavity 12, and the second positioning part 24 is embedded in the second positioning cavity 13.

[0027] Specifically, the elongated insert 2 is a beryllium copper insert, which has good heat conduction performance. During the injection molding process, the heat of the elongated insert 2 can be quickly taken away by the cooling water in the water conveying mechanism 3, so that the product 6 on the outer side of the elongated insert 2 is quickly cooled and formed, and the molding production cycle is shortened.

[0028] The first positioning part 22 and the second positioning part 24 are respectively tightly matched with the first positioning cavity 12 and the second positioning cavity 13 in the mold core 1, so as to ensure the accurate positioning of the elongated insert 2 in the mold core, avoid the movement of the insert during the injection molding process, and ensure the size, appearance precision and quality of the product 6.

[0029] As shown in Figure 3 , one end of the second positioning part 24 is connected with the elongated forming part 23, and the other end of the second positioning part 24 has a gap 15 with the cavity wall of the second positioning cavity 13, so as to facilitate the disassembly of the second positioning part 24 from the second positioning cavity 13. Moreover, the second positioning part 24 is farthest from the water conveying mechanism 3, the second positioning part 24 cools the slowest in the insert part, and when the second positioning part 24 cannot be cooled in time, it can be heat expanded in the gap 15 between the second positioning part 24 and the cavity wall of the second positioning cavity 13, so as to avoid damage caused by the too tight cooperation between the second positioning part 24 and the mold core 1.

[0030] The radial width of the second positioning part 24 gradually decreases in the direction away from the elongated forming part 23, forming a tapered structure; the side surface of the second positioning part 24 closely abuts the cavity wall of the second positioning cavity 13, so that the molten material can be prevented from entering the second positioning cavity 13.

[0031] The volume of the water conveying part 21 is greater than that of the first positioning part 22, the elongated forming part 23 and the second positioning part 24, so that the water conveying part 21 can accommodate more cooling water, and the water well 211 is connected to the water conveying mechanism 3, so that the cooling water can be effectively circulated, which helps to quickly take away the heat generated in the injection molding process, reduces the temperature of the mold core 1 and the insert, and further accelerates the injection molding. Specifically, the water well 211 is arranged at one end of the water conveying part 21, and the other end of the water conveying part 21 is connected to the first positioning part 22.

[0032] The mold core 1 is provided with a mounting groove 14 in communication with the first positioning cavity 12, and the volume of the mounting groove 14 is smaller than that of the water conveying part 21. Since the volume of the water conveying part 21 is large, the part of the water conveying part 21 close to the first positioning part 22 is arranged in the mounting groove 14, so that the water conveying part 21 can be stably connected to the mold core 1. The part of the water conveying part 21 away from the first positioning part 22 protrudes outside the mold core 1, and contacts with the low-temperature object (such as other mold parts, air, etc.) outside the mold core 1, so as to accelerate the cooling speed of the whole elongated insert 2.

[0033] As shown in Figures 5-6 The mold core 1 includes a front mold plate 4 and a rear mold plate 5. The rear side of the front mold plate 4 is provided with a first positioning front groove 41, a forming front groove 42 and a second positioning front groove 43. The front side of the rear mold plate 5 is provided with a first positioning rear groove 51, a forming rear groove 52 and a second positioning rear groove 53. The front mold plate 4 and the rear mold plate 5 are clamped together, the first positioning front groove 41 and the first positioning rear groove 51 oppositely form the first positioning cavity 12, the forming front groove 42 and the forming rear groove 52 oppositely form the injection cavity, and the second positioning front groove 43 and the second positioning rear groove 53 oppositely form the second positioning cavity 13.

[0034] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application is also included in the patent protection scope of the present application.

Claims

1. A heat transfer structure of an elongated insert, comprising a mold core (1), an elongated insert (2) extending in an axial direction, a water-carrying mechanism (3), characterized in that, The elongated insert (2) is a copper alloy insert, which includes a water conveying part (21), a first positioning part (22), an elongated forming part (23), and a second positioning part (24) in sequence along the axial direction, the water conveying part (21) is provided with a water well (211), the water conveying mechanism (3) is used for circulating cooling water in the water well (211), the insert (1) is provided with an injection cavity (11) for placing the elongated forming part (23), the outer side of the elongated forming part (23) is used for injection molding products, the injection cavity (11) is provided with a first positioning cavity (12) and a second positioning cavity (13) at both ends respectively, the first positioning part (22) is embedded in the first positioning cavity (12), and the second positioning part (24) is embedded in the second positioning cavity (13).

2. The heat conducting structure of an elongated insert according to claim 1, wherein, One end of the second positioning part (24) is connected with the elongated forming part (23), and the other end of the second positioning part (24) has a gap (15) with the cavity wall of the second positioning cavity (13).

3. The heat conducting structure of an elongated insert according to claim 1, wherein, In the direction away from the elongated forming part (23), the radial width of the second positioning part (24) gradually decreases, and the side surface of the second positioning part (24) is close to the cavity wall of the second positioning cavity (13).

4. The heat conducting structure of an elongated insert of claim 1, wherein, The volume of the water conveying part (21) is greater than that of the first positioning part (22), the elongated forming part (23), and the second positioning part (24).

5. The heat conducting structure of an elongated insert according to claim 4, wherein, One end of the water conveying part (21) is provided with a water well (211), and the other end of the water conveying part (21) is connected with the first positioning part (22).

6. The heat conducting structure of an elongated insert of claim 4, wherein, The insert (1) is provided with a mounting groove (14) in communication with the first positioning cavity (12), the capacity of the mounting groove (14) is smaller than that of the water conveying part (21), the part of the water conveying part (21) close to the first positioning part (22) is placed in the mounting groove (14), and the part of the water conveying part (21) away from the first positioning part (22) protrudes outside the insert (1).

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