Metal mold electric heating structure
By using a stainless steel sheath and heat-conducting plate embedded structure in the electric heating structure of the metal mold, the problem of uneven heating was solved, and the uniformity of mold heating and the quality of castings were improved.
Patent Information
- Application Number
- CN202522024627.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-20
AI Technical Summary
Because the overall shape of the electric heating structure for metal molds on the market is fixed, it cannot be adapted and adjusted according to the needs of the mold cavity, resulting in uneven heating and the problem of insufficient local temperature of the casting.
The stainless steel sheath and heat-conducting plate are fitted together. Through the cooperation of assembly blocks, adjusting plates and linkage springs, the stainless steel sheath is stably installed on the mold, ensuring uniform heating.
This ensures uniform heating of the mold, improving the quality of the castings and molding efficiency.
Smart Images
Figure CN224673780U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric heating technology for metal molds, and specifically relates to an electric heating structure for metal molds. Background Technology
[0002] Metal mold electric heating tubes are tubular heating elements specifically designed for temperature control of metal molds. They convert electrical energy into heat energy to achieve precise heating and constant temperature control of the mold cavity. Their core structure includes a metal sheath tube (such as 304 stainless steel or Incoloy 800), a spiral nickel-chromium alloy heating wire (such as Ni80Cr20), and an insulating and thermally conductive filler material (high-purity magnesium oxide powder). Both ends are sealed with ceramic adhesive or silicone rubber. Typical applications include injection molds, die-casting molds, and stamping molds, enabling mold temperature control within ±2℃, significantly improving molding efficiency and product quality.
[0003] Specifically, when using electric heating tubes to heat casting molds such as aluminum alloy cylinder blocks and cast iron wheel hubs, the heating structures on the market generally adopt "one-piece molding heating tubes". Because the overall shape of these heating tubes is fixed, they can only be pre-embedded along the pre-set straight holes on the outer wall or bottom of the mold during installation. They cannot be adapted and adjusted according to the needs of the mold cavity, resulting in uneven heating and causing shrinkage cavities and cold shut defects in the castings due to insufficient local temperature. Utility Model Content
[0004] The purpose of this utility model is to provide an electric heating structure for metal molds, which aims to solve the problem that when using electric heating tubes to heat casting molds such as aluminum alloy cylinder blocks and cast iron wheel hubs, the heating structures on the market generally adopt "one-piece molded heating tubes". Because the overall shape of these heating tubes is fixed, they can only be pre-embedded along the pre-set straight holes on the outer wall or bottom of the mold during installation. They cannot be adapted and adjusted according to the needs of the mold cavity, resulting in uneven heating and causing castings to have shrinkage cavities and cold shut defects due to insufficient local temperature.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric heating structure for a metal mold, comprising an upper mold and a lower mold mounted on the bottom surface of the upper mold, wherein a heat-conducting plate is connected to the bottom surface of the lower mold, and an installation hole is provided at one end of the heat-conducting plate; A stainless steel sheath is installed inside the mounting hole. One end of the stainless steel sheath is connected to an inner fiber outer rubber sheath tube, and the other end of the inner fiber outer rubber sheath tube is connected to a power connection line. An assembly block is connected to the surface of the stainless steel sheath near the inner fiber outer rubber sheath tube. A linkage plate is connected to the inner wall of the opening of the assembly block. An adjustment lever is connected to one side of the linkage plate. An insert block is connected to one end of the assembly block, and a linkage spring is connected to the other side of the assembly block.
[0006] To facilitate splicing the stainless steel sheath at one end of the heat-conducting plate, as a preferred embodiment of the electric heating structure for metal molds of this utility model, the stainless steel sheath is fitted into the heat-conducting plate by an assembly block and corresponding openings on the surface of the heat-conducting plate.
[0007] To facilitate the assembly of the stainless steel sheath, as a preferred embodiment of the electric heating structure for metal molds of this utility model, the adjusting plate passes through and extends to the outside of the assembly block, and the adjusting plate and the linkage plate are an integral structure.
[0008] To facilitate the stable installation of the stainless steel sheath, as a preferred embodiment of the electric heating structure for metal molds of this utility model, one end of the insert block relative to the linkage plate passes through and extends to the outside of the assembly block, and the insert block and the opening on one side of the heat-conducting plate form a fitting structure.
[0009] To facilitate the movement of the insert block, as a preferred embodiment of the electric heating structure for metal molds of this utility model, the linkage spring and the linkage plate form an elastic telescopic structure.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention involves fitting a stainless steel sheath into the mounting hole at one end of a heat-conducting plate. This causes the assembly block to align with the opening at one end of the heat-conducting plate, while simultaneously pressing against two adjusting plates. This causes the insert block at one end of the linkage plate to retract inwards, stabilizing the stainless steel sheath inside the mounting hole. The rebound force of the linkage spring then causes the insert block to pass through the corresponding opening between the assembly block and the heat-conducting plate, ensuring rapid and stable installation of the stainless steel sheath. By assembling the stainless steel sheath according to the mold's requirements, the uniformity of mold heating is ensured, thus improving product quality. Attached Figure Description
[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A schematic diagram of the heat-conducting plate installation structure for an electric heating structure of a metal mold.
[0012] Figure 2 A schematic diagram of the stainless steel sheath installation structure for the electric heating structure of a metal mold.
[0013] Figure 3 This is a schematic diagram of the assembly block connection structure for an electrically heated metal mold.
[0014] Figure 4 This is a partial cross-sectional schematic diagram of the assembly block of the electric heating structure for a metal mold.
[0015] Figure 5 This is an enlarged schematic diagram of point A in the electric heating structure of a metal mold.
[0016] In the diagram: 1. Upper mold; 2. Lower mold; 3. Heat-conducting plate; 4. Mounting hole; 5. Stainless steel sheath; 6. Inner fiber outer rubber sheath tube; 7. Power connection cable; 8. Assembly block; 9. Linkage plate; 10. Adjustment dial; 11. Insert block; 12. Linkage spring. Detailed Implementation
[0017] 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.
[0018] Please see Figure 1-5 The present invention provides the following technical solution: an electric heating structure for a metal mold, including an upper mold 1 and a lower mold 2 installed on the bottom surface of the upper mold 1, wherein a heat-conducting plate 3 is connected to the bottom surface of the lower mold 2, and an installation hole 4 is provided at one end of the heat-conducting plate 3; A stainless steel sleeve 5 is installed inside the mounting hole 4. One end of the stainless steel sleeve 5 is connected to an inner fiber outer rubber sheath tube 6. One end of the inner fiber outer rubber sheath tube 6 is connected to a power connection wire 7. An assembly block 8 is connected to the surface of the stainless steel sleeve 5 near the inner fiber outer rubber sheath tube 6. A linkage plate 9 is connected to the inner wall of the opening of the assembly block 8. An adjustment lever 10 is connected to one side of the linkage plate 9. An insert block 11 is connected to one end of the assembly block 8. A linkage spring 12 is connected to the other side of the assembly block 8.
[0019] Preferably, the stainless steel sheath 5 is fitted with the corresponding opening on the surface of the heat-conducting plate 3 via the assembly block 8. In actual use, the stainless steel sheath 5 is easily assembled by fitting the assembly block 8 with the corresponding opening on the surface of the heat-conducting plate 3. In addition, the heating wire inside the stainless steel sheath 5 is heated by connecting the power connection cable 7 to the power supply. Preferably, the adjusting plate 10 passes through and extends to the outside of the assembly block 8, and the adjusting plate 10 and the linkage plate 9 are an integral structure. In actual use, by controlling the two adjusting plates 10, it is convenient to drive the insert block 11 to retract, and at the same time drive the linkage spring 12 to compress and deform.
[0020] Preferably, one end of the insert 11 passes through and extends to the outside of the assembly block 8 relative to the linkage plate 9, and the insert 11 and the opening on one side of the heat-conducting plate 3 form a fitting structure. In actual use, by fitting the insert 11 into the corresponding opening on the surface of the heat-conducting plate 3, it is convenient to quickly and stably install the stainless steel sheath 5.
[0021] Preferably, the linkage spring 12 and the linkage plate 9 form an elastic telescopic structure. In actual use, by utilizing the elastic telescopic structure between the linkage spring 12 and the linkage plate 9, the insertion block 11 can be automatically inserted and tightened.
[0022] The working principle of this utility model is as follows: First, the stainless steel sleeve 5 is fitted into the mounting hole 4 at one end of the heat-conducting plate 3. At this time, the assembly block 8 is brought into contact with the opening at one end of the heat-conducting plate 3, and the two adjusting plates 10 are pressed against each other, which causes the insertion block 11 at one end of the linkage plate 9 to be retracted inward. At this time, the stainless steel sleeve 5 is installed and stabilized inside the mounting hole 4. Through the rebound force of the linkage spring 12, the insertion block 11 is driven to pass through the corresponding opening at one end of the assembly block 8 and the heat-conducting plate 3 and fit in, which ensures the rapid and stable installation of the stainless steel sleeve 5. At this time, the stainless steel sleeve 5 is assembled according to the needs of the mold, which ensures the uniformity of mold heating and improves the quality of the product.
[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A metal mold electric heating structure, comprising an upper mold (1) and a lower mold (2) mounted on the bottom surface of the upper mold (1), characterized in that: The bottom surface of the lower mold (2) is connected to a heat-conducting plate (3), and one end of the heat-conducting plate (3) is provided with a mounting hole (4). A stainless steel sleeve (5) is installed inside the mounting hole (4). One end of the stainless steel sleeve (5) is connected to an inner fiber outer rubber sheath tube (6). One end of the inner fiber outer rubber sheath tube (6) is connected to a power connection line (7). An assembly block (8) is connected to the surface of the stainless steel sleeve (5) near the inner fiber outer rubber sheath tube (6). A linkage plate (9) is connected to the inner wall of the opening of the assembly block (8). An adjustment lever (10) is connected to one side of the linkage plate (9). An insert block (11) is connected to one end of the assembly block (8). A linkage spring (12) is connected to the other side of the assembly block (8).
2. The electric heating structure for a metal mold according to claim 1, characterized in that: The stainless steel sheath (5) forms an interlocking structure with the corresponding opening on the surface of the heat-conducting plate (3) through the assembly block (8).
3. The electric heating structure for a metal mold according to claim 1, characterized in that: The adjustment lever (10) passes through and extends to the outside of the assembly block (8), and the adjustment lever (10) and the linkage plate (9) are an integral structure.
4. The electric heating structure for a metal mold according to claim 1, characterized in that: The insert (11) passes through and extends to the outside of the assembly block (8) at one end relative to the linkage plate (9), and the insert (11) and the opening on one side of the heat-conducting plate (3) form a fitting structure.
5. The electric heating structure for a metal mold according to claim 1, characterized in that: The linkage spring (12) and the linkage plate (9) form an elastic telescopic structure.