Solidification and blockage prevention mold

Abstract

The utility model relates to the technical field of dies, in particular to a solidification and blockage prevention die, a plurality of heat preservation parts are respectively positioned at the bottom of a sprue gate, each heat preservation part comprises a heat preservation cylinder and a heat preservation wire group, the heat preservation wire group is annularly arranged on the inner outer ring of the heat preservation cylinder, and when the heat preservation wire group is connected with a power supply, the heat preservation wire group is connected with the sprue gate. The heat preservation wire set begins to heat and transfers heat to the bottom of the sprue gate, and the heat preservation cylinder prevents loss of the bottom of the sprue gate; the first heat preservation wire and the second heat preservation wire start to heat, heat is transferred to the heat preservation barrel and the heat conduction needle, the heat preservation barrel conducts heating and heat preservation on the molten metal in the branch runner, and the situation that due to heat dissipation, the molten metal is solidified, the branch runner is blocked, and injection molding fails is prevented; the first heat preservation wire and the second heat preservation wire directly conduct heat to the outer walls of the branch runners through the heat conduction needles to heat molten metal in the branch runners, heat loss of the molten metal in the pouring part is made up, the flowing state of the molten metal is kept, and the branch runners are prevented from being blocked by the molten metal.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold that prevents solidification and clogging. Background Art

[0002] Metal injection molding (MIM) is a process that leverages the vast capabilities of injection molding to create structural metal parts. Unlike thermoplastic molding, where molded parts are typically the final product, MIM parts must subsequently undergo heat treatment to remove the polymer and sinter to create a dense structural component. Both thermoplastic and MIM processes utilize temperature and pressure to form components, resulting in similarities in the science of shape formation. MIM offers numerous advantages, including the ability to produce complex geometries. Any product that can be formed using an injection mold can also be produced using MIM, offering a high degree of geometric design freedom. MIM is also suitable for high-volume production, with a typical production cycle of 5-7 days, enabling continuous supply after each cycle. Daily production can range from a few hundred to hundreds of thousands, depending on demand. The high density of MIM products offers excellent material properties, approaching those of sheet metal, making them particularly suitable for parts with specific performance requirements.

[0003] When casting metal injection molding molds commonly used on the market, the insulation wire at the injection nozzle has a small contact area with the injection channel, which easily causes temperature loss and leads to blockage of the injection nozzle. Utility Model Content

[0004] The main purpose of the utility model is to provide an anti-solidification and clogging mold to solve the problem of small contact area between the insulation wire at the injection nozzle and the injection channel proposed in the related art.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an anti-solidification and clogging mold, comprising: a fixed mold portion, the fixed mold portion being located below the mold, the fixed mold portion providing half of the mold;

[0006] A movable mold portion, the movable mold portion being connected to the top of the fixed mold portion by bolts, the movable mold portion providing half of the model, and when the movable mold portion and the fixed mold portion are combined, a complete model can be provided;

[0007] A pouring part, which is provided on the top of the movable mold part and through which the injection material is added into the mold;

[0008] There are several insulation parts, each of which is located at the bottom of the pouring port. The insulation part includes an insulation tube and an insulation wire group. The insulation wire group is annularly arranged inside the outer ring of the insulation tube. When the insulation wire group is powered on, the insulation wire group starts to heat up and transfers the heat to the bottom of the pouring port. The insulation tube prevents the heat from being lost at the bottom of the pouring port.

[0009] Furthermore, the fixed die part includes a bottom plate, a counterweight, a plurality of springs and a fixed die block. The counterweight is fixedly arranged above the bottom plate to increase the weight of the fixed die part and lower the center of gravity of the fixed die part.

[0010] Furthermore, the fixed module is provided with a half model, and the model opening is facing upward. The fixed module is fixed above the counterweight block by a number of springs. The top ends of the springs are fixedly connected to the bottom surface of the fixed module, and the bottom ends are fixedly connected to the top surface of the counterweight block.

[0011] Furthermore, the movable mold part includes a pressure top and a movable module. The movable module is provided with another half of the mold, and the mold opening faces downward. The movable module is fixedly arranged below the pressure top.

[0012] Furthermore, the moving module is connected to the fixed module by bolts.

[0013] Furthermore, the pouring part includes a pouring port and a runner group, the runner group includes a main runner, a plurality of branch runs and a plurality of tributary runners, and the pouring port is provided through the top of the pressure.

[0014] Furthermore, the main channel is fixedly arranged below the pouring port, one end of each branch channel is connected to the main channel, and the other end is connected to the branch channel, and the branch channel injects the molten metal into the mold.

[0015] Furthermore, the heat-insulating portion further comprises a central hole, the central hole being radially arranged in the middle of the heat-insulating cylinder, and the branch channel being located in the central hole.

[0016] Furthermore, the insulation wire group includes a plurality of first insulation wires, a plurality of second insulation wires and a plurality of heat-conducting needles, the second insulation wires are fixedly arranged below the first insulation wires, and the first insulation wires are connected by wires and communicated with an external power supply.

[0017] Furthermore, the heat conducting needle is fixedly arranged on the inner side of the first heat insulation wire and the second heat insulation wire and points to the central hole.

[0018] Compared with the prior art, the present invention has the following beneficial effects: the first insulation wire and the second insulation wire start to heat up and transfer the heat to the insulation tube and the heat-conducting needle. The insulation tube heats and insulates the molten metal in the branch channel to prevent the molten metal from solidifying due to heat loss, blocking the branch channel, and causing injection failure. The first insulation wire and the second insulation wire directly transfer heat to the outer wall of the branch channel through the heat-conducting needle to heat the molten metal in the branch channel, compensate for the heat loss of the molten metal in the pouring part, maintain the flow state of the molten metal, and prevent it from blocking the branch channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the heat preservation part of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the insulation wire group of the utility model.

[0023] Illustration:

[0024] 1. Moving mold part; 11. Pressing top; 12. Moving die block;

[0025] 2. Fixed die; 21. Bottom plate; 22. Counterweight; 23. Spring; 24. Fixed die block;

[0026] 3. Pouring part; 31. Pouring port; 32. Main channel; 33. Branch channel; 34. Branch channel;

[0027] 4. Insulation part; 41. Insulation tube; 42. Center hole; 43. Insulation wire group; 431. First insulation wire; 432. Second insulation wire; 433. Heat conducting needle. DETAILED DESCRIPTION

[0028] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0029] See also Figures 1 to 4 , this embodiment provides an anti-solidification blocking mold, comprising: a fixed mold part 2, the fixed mold part 2 is located below the mold, and the fixed mold part 2 provides half of the model;

[0030] The movable mold part 1 is connected to the top of the fixed mold part 2 by bolts. The movable mold part 1 provides half of the model. When the movable mold part 1 and the fixed mold part 2 are combined, a complete model can be provided;

[0031] The pouring part 3 is provided on the top of the movable mold part 1, and the injection material is added into the mold through the pouring part 3;

[0032] There are several insulation parts 4, and the insulation parts 4 are respectively located at the bottom of the pouring part 3. The insulation part 4 includes an insulation tube 41 and an insulation wire group 43. The insulation wire group 43 is annularly arranged inside the outer ring of the insulation tube 41. When the insulation wire group 43 is powered on, the insulation wire group 43 starts to heat up and transfers the heat to the bottom of the pouring part 3. The insulation tube 41 prevents the heat from being lost at the bottom of the pouring part 3.

[0033] The fixed mold part 2 includes a base plate 21, a counterweight block 22, a plurality of springs 23 and a fixed module 24. The counterweight block 22 is fixedly arranged above the base plate 21 to increase the weight of the fixed mold part 2, lower the center of gravity of the fixed mold part 2, improve the stability of the mold, and prevent tipping failure during the injection molding process, which may lead to injection failure.

[0034] The fixed module 24 is provided with a half model, and the model opening is facing upward to receive the molten metal flowing out of the branch channel 34. The fixed module 24 is fixed above the counterweight block 22 by a number of springs 23. The top ends of the springs 23 are fixedly connected to the bottom surface of the fixed module 24, and the bottom ends are fixedly connected to the top surface of the counterweight block 22. When the moving module 12 is fixed to the fixed module 24 with bolts, the springs 23 are deformed to absorb part of the pressure of the moving module 12 to prevent the fixed module 24 from being crushed.

[0035] The movable die portion 1 includes a pressure top 11 and a movable die block 12 . The movable die block 12 is provided with another half mold, and the mold opening faces downward. The molten metal in the fixed die block 24 can flow into the mold of the movable die block 12 along the opening. The movable die block 12 is fixedly arranged below the pressure top 11 .

[0036] The moving module 12 is connected to the fixed module 24 by bolts.

[0037] The pouring part 3 includes a pouring port 31 and a runner group. The runner group includes a main channel 32, several branch channels 33 and several tributary channels 34. The pouring port 31 is provided on the top 11 through which the molten metal is injected into the mold.

[0038] The main channel 32 is fixedly arranged below the pouring port 31 , and one end of the branch channel 33 is connected to the main channel 32 , and the other end is connected to the branch channel 34 , which injects the molten metal into the mold.

[0039] The heat-insulating portion 4 further includes a central hole 42 , which is radially arranged in the middle of the heat-insulating tube 41 . The branch channel 34 is located in the central hole 42 . The heat-insulating tube 41 prevents heat loss in the branch channel 34 and keeps it warm.

[0040] The insulation wire group 43 includes several first insulation wires 431, several second insulation wires 432 and several heat-conducting needles 433. The second insulation wires 432 are fixedly arranged below the first insulation wires 431. The first insulation wires 431 are connected by wires and are connected to an external power supply. The first insulation wires 431 and the second insulation wires 432 are both made of copper wires. When the power is turned on, after the current passes through the first insulation wires 431 and the second insulation wires 432, both begin to heat up and heat the insulation tube 41.

[0041] The heat conducting needle 433 is fixed inside the first insulation wire 431 and the second insulation wire 432 and points to the central hole 42. The heat conducting needle 433 transfers the heat of the first insulation wire 431 and the second insulation wire 432 to the branch channel 34 to compensate for the heat loss of the metal liquid therein.

[0042] Insert the injection nozzle of the injection molding machine into the pouring port 31, and inject molten metal liquid into the pouring part 3. After the metal liquid enters the branch channel 34, turn on the power of the insulation wire group 43. The first insulation wire 431 and the second insulation wire 432 begin to heat up and transfer the heat to the insulation cylinder 41 and the heat-conducting needle 433. The insulation cylinder 41 heats and keeps the metal liquid in the branch channel 34 warm to prevent the metal liquid from solidifying due to heat loss, blocking the branch channel 34, and causing the injection molding to fail. The first insulation wire 431 The second insulation wire 432 directly conducts heat to the outer wall of the branch channel 34 through the heat-conducting needle 433, heating the molten metal in the branch channel 34, compensating for the heat loss of the molten metal in the pouring part 3, maintaining the flow state of the molten metal, and preventing it from blocking the branch channel 34. The molten metal flows along the pouring part 3 between the movable module 12 and the fixed module 24, and the injection of the molten metal is stopped after filling the gap between the two. After maintaining pressure and cooling for a period of time, the movable mold part 1 is opened and the injection mold is taken out.

[0043] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Anti-solidification clogging mold, characterized in that, include: A fixed mold part (2), the fixed mold part (2) is located below the mold, and the fixed mold part (2) provides half of the model; A movable mold part (1), the movable mold part (1) being connected to the top of the fixed mold part (2) by bolts, the movable mold part (1) providing half of the model, and when the movable mold part (1) and the fixed mold part (2) are combined, a complete model can be provided; A pouring part (3), the pouring part (3) being arranged on the top of the movable mold part (1), and the injection material is added into the mold through the pouring part (3); A heat-insulating portion (4), wherein the heat-insulating portion (4) is provided in a plurality of portions. The heat-insulating portions (4) are respectively located at the bottom of the pouring portion (3). The heat-insulating portion (4) comprises a heat-insulating tube (41) and a heat-insulating wire group (43). The heat-insulating wire group (43) is annularly arranged inside the outer ring of the heat-insulating tube (41). When the heat-insulating wire group (43) is powered on, the heat-insulating wire group (43) starts to generate heat and transfers the heat to the bottom of the pouring portion (3). The heat-insulating tube (41) prevents the heat from being lost at the bottom of the pouring portion (3).

2. The anti-solidification plugging mold according to claim 1, characterized in that: The fixed die part (2) comprises a bottom plate (21), a counterweight (22), a plurality of springs (23) and a fixed die block (24). The counterweight (22) is fixedly arranged above the bottom plate (21) to increase the weight of the fixed die part (2) and lower the center of gravity of the fixed die part (2).

3. The anti-solidification plugging mold according to claim 2, characterized in that: The fixed module (24) is provided with a half model, and the model opening faces upward. The fixed module (24) is fixedly arranged above the counterweight (22) via a plurality of springs (23). The top ends of the springs (23) are fixedly connected to the bottom surface of the fixed module (24), and the bottom ends are fixedly connected to the top surface of the counterweight (22).

4. The anti-solidification clogging mold according to claim 3, characterized in that: The movable mold part (1) comprises a top pressing part (11) and a movable die block (12). The movable die block (12) is provided with another half mold, and the mold opening faces downward. The movable die block (12) is fixedly arranged below the top pressing part (11).

5. The anti-solidification plugging mold according to claim 4, characterized in that: The movable module (12) is connected to the fixed module (24) by bolts.

6. The anti-solidification plugging mold according to claim 5, characterized in that: The pouring portion (3) comprises a pouring port (31) and a flow channel group, wherein the flow channel group comprises a main flow channel (32), a plurality of branch flows (33) and a plurality of tributary flows (34), and the pouring port (31) is provided through the pressure top (11).

7. The anti-solidification plugging mold according to claim 6, characterized in that: The main channel (32) is fixedly arranged below the pouring port (31), one end of each branch channel (33) is connected to the main channel (32), and the other end is connected to the branch channel (34), and the branch channel (34) injects the molten metal into the mold.

8. The anti-solidification plugging mold according to claim 7, characterized in that: The heat-insulating portion (4) further comprises a central hole (42), the central hole (42) being radially arranged in the middle of the heat-insulating cylinder (41), and the branch channel (34) being located in the central hole (42).

9. The anti-solidification plugging mold according to claim 8, characterized in that: The insulation wire group (43) comprises a plurality of first insulation wires (431), a plurality of second insulation wires (432) and a plurality of heat-conducting needles (433), wherein the second insulation wires (432) are fixedly arranged below the first insulation wires (431), and the first insulation wires (431) are connected by wires and communicated with an external power supply.

10. The anti-solidification plugging mold according to claim 9, characterized in that: The heat-conducting needle (433) is fixedly arranged on the inner side of the first heat-insulating wire (431) and the second heat-insulating wire (432), and points towards the central hole (42).

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