Die-casting die heat insulation mechanism

Abstract

The utility model discloses a heat insulation mechanism for a die-casting die, which belongs to the technical field of die-casting dies and comprises a base plate, bolts are mounted at four corners of the base plate in a threaded manner, a lower die and an upper die are arranged on the side surface of the base plate, and the upper die and the lower die are arranged oppositely up and down and are matched with each other for use. Mounting grooves are formed in the inner wall of the lower mold and the inner wall of the upper mold, preheating heating plates are fixedly mounted on the inner walls of the mounting grooves, and heat preservation jackets are mounted on the outer surface of the lower mold and the outer surface of the upper mold; through the arrangement of the heat preservation protective sleeve, a heat preservation and insulation effect can be achieved after the upper mold and the lower mold are closed, the phenomenon that heat is dissipated and lost is effectively prevented, and the upper mold and the lower mold are preheated through the preheating heating plate before molten metal is injected; and the influence on the subsequent die-casting quality caused by temperature difference heat transfer of the cold lower die and the cold upper die on the just injected molten metal can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of die casting mold technology, and specifically relates to a heat insulation mechanism for die casting molds. Background Technology

[0002] Die casting molds are tools used to cast metal parts, specifically for completing the die casting process on a specialized die casting and forging machine. The basic die casting process involves molten metal being poured into the mold cavity at low or high speed. The mold has movable cavity surfaces, which are pressurized and forged as the molten metal cools, eliminating shrinkage cavities and porosity defects in the blank and achieving a forged, fragmented grain structure. This significantly improves the overall mechanical properties of the blank.

[0003] Existing die-casting molds lack effective heat insulation and preheating mechanisms. When hot molten metal is injected into the mold, the mold itself is made of metal and has a relatively low temperature. This causes a temperature difference between the newly injected molten metal and the subsequently injected molten metal, which leads to a decrease in die-casting accuracy. To address this, we propose a heat insulation mechanism for die-casting molds. Utility Model Content

[0004] The purpose of this utility model is to provide a heat insulation mechanism for die casting molds, so as to solve the problem mentioned in the background art that existing die casting molds lack effective heat insulation and preheating mechanisms. When hot molten metal is injected into the mold, the temperature of the mold itself is relatively low due to its metal material. This causes a temperature difference between the newly injected molten metal and the subsequently injected molten metal, which leads to a decrease in die casting accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat insulation mechanism for a die-casting mold, comprising a base plate, bolts threadedly installed at the four corners of the base plate, a lower mold and an upper mold arranged on the side of the base plate, the upper mold and the lower mold being arranged vertically opposite each other and used in conjunction with each other, mounting grooves being provided on the inner walls of the lower mold and the upper mold, and a preheating plate being fixedly installed on the inner wall of the mounting groove, heat insulation sleeves being installed on the outer surfaces of the lower mold and the upper mold, a die-casting cylinder being fixedly installed on the surface of the heat insulation sleeve at the upper position, the piston rod end of the die-casting cylinder slidingly penetrating the heat insulation sleeve and the upper mold at the upper position and being fixedly installed with a die-casting plate, two mounting plates being fixedly installed on the side of the base plate, a mold driving cylinder being fixedly installed on the mounting plate, the piston rod of the mold driving cylinder being fixedly connected to the heat insulation sleeve at the upper position, and several support plates being fixedly installed on the surface of the upper mold and the surface of the lower mold, and a slide rail for the support plates to slide on the base plate.

[0006] By adopting the above scheme and setting up an insulation sleeve, a heat insulation effect can be achieved after the upper and lower molds are closed, effectively preventing heat loss. Furthermore, by using a preheating heating plate to preheat the upper and lower molds before the molten metal is injected, the cold lower and upper molds can be prevented from causing a temperature difference in the newly injected molten metal, which would affect the subsequent die-casting quality. By setting up support plate one and support plate two in conjunction with the hinge arm and disc, the lower mold can move up and down synchronously when the upper mold moves up and down, realizing synchronous bidirectional mold opening and closing operations and improving work efficiency.

[0007] In the above scheme, it should be noted that the die-casting cylinder, the mold driving cylinder, and the preheating plate are all electrically connected to an external power source.

[0008] In a preferred embodiment, a second support plate is fixedly installed at the end of several first support plates at the same horizontal height position. A hinge arm is hinged to the side of the second support plate, and a disc is hinged between two hinge arms. The hinge arms and the disc are eccentrically arranged.

[0009] Using the above scheme, support plate one and support plate two are used in conjunction with the hinge arm and the disc. When the mold driving cylinder drives the upper mold to move up and down, it will drive support plate two to move through support plate one. Support plate two will drive the disc to rotate through the upper hinge arm, and then drive the lower support plate two to move up and down through the lower hinge arm. In turn, the lower support plate one will drive the lower mold to move up and down at the same time. The upper mold and the lower mold move in opposite directions, realizing bidirectional mold opening and improving mold opening efficiency.

[0010] In a preferred embodiment, a plurality of mounting plates are fixedly mounted on the side of the substrate, and a plurality of fixing rods are fixedly mounted on the surface of the mounting plates. The fixing rods slide through the insulation sleeve and the lower mold at the lower position and are fixedly mounted with fixing plates. The inner wall of the lower mold is provided with a receiving groove for accommodating the fixing plates.

[0011] Using the above scheme, the mounting plate 2 is used in conjunction with the fixing rod and the fixing plate. During the mold opening process of the upper and lower molds, the presence of the fixing plate provides a supporting effect for the molded part.

[0012] In a preferred embodiment, a plurality of fixed guide blocks are fixedly installed on the side of the lower mold, and a plurality of movable guide blocks are fixedly installed on the side of the upper mold. A guide rod is fixedly installed on the upper surface of the fixed guide block, the movable guide block is slidably installed on the outer surface of the guide rod, and a limit plate is fixedly installed on the top end of the guide rod.

[0013] By using the above scheme, the fixed guide block and guide rod are used in conjunction with the movable guide block to achieve a supporting and guiding effect, so that the upper mold and the lower mold have good stability when moving relative to each other and are not prone to shaking.

[0014] In a preferred embodiment, a limiting rod is fixedly installed on the inner wall of the slide rail on the substrate, and the support plate is slidably installed on the outer surface of the limiting rod.

[0015] By adopting the above scheme, the movement of the support plate can be limited and supported by the presence of the limiting rod, thereby ensuring good stability when the upper and lower molds move.

[0016] In a preferred embodiment, an annular groove is formed on the outer surface of the disk, and an arc-shaped slider is slidably installed on the inner wall of the annular groove. An assembly block is fixedly installed on the side of the arc-shaped slider, and the assembly block is fixedly installed on the side of the substrate.

[0017] By using the above solution, and employing an arc-shaped slider in conjunction with an annular groove, the stable sliding of the disc can be ensured, and there will be no shaking.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] The heat insulation mechanism of this die-casting mold can provide heat insulation after the upper and lower molds are closed by setting up a heat insulation sleeve, which can effectively prevent heat loss. In addition, the preheating heating plate can be used to preheat the upper and lower molds before the molten metal is injected, which can avoid the cold lower and upper molds causing a temperature difference in the newly injected molten metal and affecting the subsequent die-casting quality.

[0020] The heat insulation mechanism of this die-casting mold uses support plate one and support plate two in conjunction with a hinged arm and a disc to enable the lower mold to move up and down synchronously when the upper mold moves up and down, thus achieving synchronous bidirectional mold opening and closing operations and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0023] Figure 3 This is a structural schematic diagram of the cross-section of the thermal insulation sleeve at the upper position and the cross-section of the upper mold of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of support plate one, support plate two, and disc of this utility model;

[0025] Figure 5This is a schematic diagram of the exploded structure of the disk and assembly block of this utility model.

[0026] In the diagram: 1. Base plate; 2. Bolt; 3. Lower mold; 4. Upper mold; 5. Preheating plate; 6. Insulation sleeve; 7. Die-casting cylinder; 8. Die-casting plate; 9. Mounting plate one; 10. Mold drive cylinder; 11. Support plate one; 12. Support plate two; 13. Hinge arm; 14. Disc; 15. Mounting plate two; 16. Fixing rod; 17. Fixing plate; 18. Fixing guide block; 19. Movable guide block; 20. Guide rod; 21. Limiting disc; 22. Limiting rod; 23. Assembly block; 24. Arc-shaped slider. Detailed Implementation

[0027] Please see Figure 1-5 This utility model provides a heat insulation mechanism for a die-casting mold, including a base plate 1. Bolts 2 are threadedly installed at the four corners of the base plate 1. A lower mold 3 and an upper mold 4 are provided on the side of the base plate 1. The upper mold 4 and the lower mold 3 are arranged vertically opposite each other and cooperate with each other. The inner walls of the lower mold 3 and the upper mold 4 are provided with mounting grooves, and a preheating plate 5 is fixedly installed on the inner wall of the mounting groove. The outer surfaces of the lower mold 3 and the upper mold 4 are provided with heat insulation sleeves 6. The surface of the heat insulation sleeve 6 at the upper position is fixed. A die-casting cylinder 7 is fixedly installed. The piston rod end of the die-casting cylinder 7 slides through the insulation sleeve 6 at the upper position and the upper mold 4 and is fixedly installed on the die-casting plate 8. Two mounting plates 9 are fixedly installed on the side of the base plate 1. A mold driving cylinder 10 is fixedly installed on the mounting plate 9. The piston rod of the mold driving cylinder 10 is fixedly connected to the insulation sleeve 6 at the upper position. Several support plates 11 are fixedly installed on the surface of the upper mold 4 and the surface of the lower mold 3. A slide rail is opened on the base plate 1 for the support plates 11 to slide.

[0028] By setting up the heat insulation sleeve 6, a heat insulation effect can be achieved after the upper mold 4 and the lower mold 3 are closed, effectively preventing heat loss. In addition, the preheating heating plate 5 is used to preheat the upper mold 4 and the lower mold 3 before the molten metal is injected, which can avoid the cold lower mold 3 and the upper mold 4 causing a temperature difference in heat transfer to the newly injected molten metal, affecting the subsequent die casting quality. By setting up support plate one 11 and support plate two 12 in conjunction with the hinge arm 13 and the disc 14, the lower mold 3 moves up and down synchronously when the upper mold 4 moves up and down, realizing synchronous bidirectional mold opening and closing operations, and improving work efficiency.

[0029] Support plates 11 are fixedly installed at the ends of several support plates 11 at the same horizontal height. A hinge arm 13 is hinged to the side of the support plate 12. A disc 14 is hinged between two hinge arms 13. The hinge arms 13 and the disc 14 are eccentrically arranged. The support plates 11 and 12 work together with the hinge arms 13 and the disc 14. When the mold drive cylinder 10 drives the upper mold 4 to move up and down, it will drive the support plate 12 to move through the support plates 11. The support plate 12 will drive the disc 14 to rotate through the upper hinge arm 13, and then drive the lower support plate 12 to move up and down through the lower hinge arm 13. In turn, the lower mold 3 will move up and down simultaneously through the lower support plate 11. The upper mold 4 and the lower mold 3 move in opposite directions, realizing bidirectional mold opening and improving mold opening efficiency.

[0030] Several mounting plates 15 are fixedly installed on the side of the substrate 1. Several fixing rods 16 are fixedly installed on the surface of the mounting plates 15. The fixing rods 16 slide through the insulation sleeve 6 and the lower mold 3 at the lower position and are fixedly installed with fixing plates 17. The inner wall of the lower mold 3 is provided with a receiving groove for accommodating the fixing plates 17. The mounting plates 15 are used in conjunction with the fixing rods 16 and fixing plates 17. During the mold opening process of the upper mold 4 and the lower mold 3, the presence of the fixing plates 17 provides a supporting effect for the molded part.

[0031] Several fixed guide blocks 18 are fixedly installed on the side of the lower mold 3, and several movable guide blocks 19 are fixedly installed on the side of the upper mold 4. A guide rod 20 is fixedly installed on the upper surface of the fixed guide block 18, and the movable guide block 19 is slidably installed on the outer surface of the guide rod 20. A limit plate 21 is fixedly installed on the top of the guide rod 20. The fixed guide block 18 and the guide rod 20 are used in conjunction with the movable guide block 19 to achieve a supporting and guiding effect, so that the upper mold 4 and the lower mold 3 have good stability when moving relative to each other and are not prone to shaking.

[0032] A limiting rod 22 is fixedly installed on the inner wall of the slide on the substrate 1. The support plate 11 is slidably installed on the outer surface of the limiting rod 22. The presence of the limiting rod 22 can limit and support the movement of the support plate 11, thereby ensuring good stability when the upper mold 4 and the lower mold 3 move.

[0033] An annular groove is formed on the outer surface of the disc 14, and an arc-shaped slider 24 is slidably installed on the inner wall of the annular groove. An assembly block 23 is fixedly installed on the side of the arc-shaped slider 24. The assembly block 23 is fixedly installed on the side of the substrate 1. By using the arc-shaped slider 24 in conjunction with the annular groove, the disc 14 can be made to slide stably without shaking.

[0034] During use, by setting the heat insulation sleeve 6, a heat insulation effect can be achieved after the upper mold 4 and the lower mold 3 are closed, effectively preventing heat loss. Before the molten metal is injected, the preheating heating plate 5 is used to preheat the upper mold 4 and the lower mold 3, which can avoid the cold lower mold 3 and the upper mold 4 causing a temperature difference in the newly injected molten metal, affecting the subsequent die casting quality. The mold opening drive cylinder 10 needs to be started, which drives the upper mold 4 to move upward. The upper mold 4 drives the upper support plate 11 and support plate 2 12 to move upward. Under the action of the hinge arm 13 and the disc 14, the lower support plate 11 and support plate 2 12 drive the lower mold 3 to move downward. At this time, bidirectional mold opening is achieved, and the formed part remains on the surface of the fixed plate 17.

Claims

1. A heat insulation mechanism for a die-casting mold, characterized in that: The system includes a substrate (1), with bolts (2) threaded onto each of the four corners of the substrate (1). A lower mold (3) and an upper mold (4) are provided on the side of the substrate (1). The upper mold (4) and the lower mold (3) are arranged opposite each other and cooperate with each other. Mounting grooves are provided on the inner walls of both the lower mold (3) and the upper mold (4), and a preheating plate (5) is fixedly mounted on the inner wall of each mounting groove. Insulating sleeves (6) are installed on the outer surfaces of both the lower mold (3) and the upper mold (4). A die-casting cylinder (7) is fixedly mounted on the surface of the insulating sleeve (6) at the upper position. The piston rod end of the die-casting cylinder (7) slides through the heat insulation sleeve (6) and the upper mold (4) at the upper position and is fixedly installed with a die-casting plate (8). Two mounting plates (9) are fixedly installed on the side of the base plate (1). A mold driving cylinder (10) is fixedly installed on the mounting plate (9). The piston rod of the mold driving cylinder (10) is fixedly connected to the heat insulation sleeve (6) at the upper position. Several support plates (11) are fixedly installed on the surface of the upper mold (4) and the surface of the lower mold (3). A slide for the support plates (11) to slide is opened on the base plate (1).

2. The heat insulation mechanism for die-casting molds according to claim 1, characterized in that: Support plate 2 (12) is fixedly installed at the ends of several support plates 1 (11) at the same horizontal height position. A hinge arm (13) is hinged to the side of the support plate 2 (12). A disc (14) is hinged between two hinge arms (13). The hinge arms (13) and the disc (14) are eccentrically arranged.

3. The heat insulation mechanism for die-casting molds according to claim 1, characterized in that: A number of mounting plates (15) are fixedly installed on the side of the substrate (1), and a number of fixing rods (16) are fixedly installed on the surface of the mounting plates (15). The fixing rods (16) slide through the heat insulation sleeve (6) and the lower mold (3) at the lower position and are fixedly installed with fixing plates (17). The inner wall of the lower mold (3) is provided with a receiving groove for accommodating the fixing plates (17).

4. The heat insulation mechanism for die-casting molds according to claim 1, characterized in that: The lower mold (3) has several fixed guide blocks (18) fixedly installed on its side, and the upper mold (4) has several movable guide blocks (19) fixedly installed on its side. The upper surface of the fixed guide block (18) is fixedly installed with a guide rod (20). The movable guide block (19) is slidably installed on the outer surface of the guide rod (20). The top end of the guide rod (20) is fixedly installed with a limit plate (21).

5. The heat insulation mechanism for die-casting molds according to claim 1, characterized in that: A limiting rod (22) is fixedly installed on the inner wall of the slide on the substrate (1), and the support plate (11) is slidably installed on the outer surface of the limiting rod (22).

6. The heat insulation mechanism for die-casting molds according to claim 2, characterized in that: The outer surface of the disk (14) is provided with an annular groove, and an arc-shaped slider (24) is slidably installed on the inner wall of the annular groove. An assembly block (23) is fixedly installed on the side of the arc-shaped slider (24), and the assembly block (23) is fixedly installed on the side of the substrate (1).

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