Low-pressure metal casting mold

Abstract

The utility model relates to a low-pressure metal casting mold which comprises a mold frame, a cooling pipe support, a low-pressure assembly, a machining cavity, a sprue spreader, an upper support piece and a cooling component. The low-voltage assemblies are arranged on the two sides of the mold frame. The processing cavity is arranged between the low-pressure assemblies; the sprue spreader is fixed at the bottom of the mold frame; the upper bracket piece is arranged above the mold frame; the cooling component comprises a main cooling piece, an auxiliary cooling assembly and a cooling ring. The main cooling piece is arranged at the axis position of the machining cavity. The at least one auxiliary cooling assembly is arranged at the upper part of the processing cavity; the cooling ring is arranged in the middle of the processing cavity. The technical scheme has the beneficial technical effects that liquid metal is shunted through the sprue spreader, and mold filling stability is ensured. The axis position of the liquid metal is cooled through the main cooling piece, the upper portion of the liquid metal is cooled through the auxiliary cooling assembly, and the middle of the liquid metal is cooled through the cooling ring.

Description

Technical Field

[0001] The utility model relates to the field of casting molds, in particular to a low-pressure metal casting mold. Background Technique

[0002] Since the birth of the low-pressure casting technology, due to its unique advantages, it has been widely applied and developed in the field of metal casting.

[0003] However, traditional low-pressure casting molds often have complex structures, high manufacturing and maintenance costs, which are not conducive to improving production efficiency. Moreover, for the existing shell products of water-cooled motors, several layers of annular water channels are arranged inside the shell for motor cooling. However, the wall thickness above and below the water channels is relatively large, while the wall thickness at the position of the water channels is relatively small. In order to ensure stability and service life, the existing motor shell products generally adopt the low-pressure casting process. For the finished products cast by this kind of structure, shrinkage porosity often appears inside due to the thermal knot caused by the large thickness of the upper part, resulting in leakage problems.

[0004] Therefore, it is very necessary to provide a low-pressure metal casting mold to solve the above technical problems. Summary of the Utility Model

[0005] Based on the above description, the utility model provides a low-pressure metal casting mold to solve the problem that for the finished products cast by the existing low-pressure casting process, shrinkage porosity often appears inside due to the thermal knot caused by the large thickness of the upper part, resulting in leakage problems.

[0006] The technical solution of the utility model to solve the above technical problems is as follows: A low-pressure metal casting mold includes a mold frame, a cooling pipe support, a low-pressure component, a processing cavity, a flow splitting cone, an upper support member and a cooling component. The cooling pipe support is fixed on the mold frame; the low-pressure component is arranged on both sides of the mold frame and is used for low-pressure pressing of the metal to be processed; the processing cavity is arranged between the low-pressure components; the flow splitting cone is fixed at the bottom of the mold frame and is used for splitting the liquid metal to ensure smooth filling; the upper support member is arranged above the mold frame; the cooling component includes a main cooling member, a secondary cooling component and a cooling ring. The main cooling member is arranged at the central position of the processing cavity and is used for cooling the central position of the liquid metal; at least one secondary cooling component is arranged, all of which are arranged at the upper part of the processing cavity and are used for cooling the upper part of the liquid metal; the cooling ring is arranged in the middle of the processing cavity and is used for cooling the middle part of the liquid metal.

[0007] Further, the main cooling member includes a first cooling water inlet pipe, a first cooling water outlet pipe, a first cooling water joint, and a main cooling water pipe. The water inlet end of the first cooling water inlet pipe is fixed on the cooling pipe bracket; the water outlet end of the first cooling water outlet pipe is fixed on the cooling pipe bracket; the first cooling water joint is provided with a water inlet end and a water outlet end. The water inlet end of the first cooling water joint is connected to the first cooling water inlet pipe, and the water outlet end of the first cooling water joint is connected to the first cooling water outlet pipe; the main cooling water pipe extends along the center of the processing cavity from top to bottom, and the main cooling water pipe is fixed on the flow dividing cone, and the main cooling water pipe is connected to the first cooling water joint.

[0008] Further, it further includes a first flow dividing sleeve, one end of which is connected to the first cooling water inlet pipe, and the other end is arranged in the middle of the main cooling water pipe for introducing cooling water into the main cooling water pipe.

[0009] Further, the auxiliary cooling assembly includes a center mold, a cover body, and bolts. The center mold is arranged on the mold rack; the cover body is arranged on the center mold for fixing the center mold on the mold rack; the bolts pass through the cover body and are threadedly connected to the mold rack for fixing the cover body on the mold rack.

[0010] Further, the auxiliary cooling assembly further includes a second cooling water inlet pipe, a second cooling water outlet pipe, a second cooling water joint, and an auxiliary cooling water pipe. The water inlet end of the second cooling water inlet pipe is fixed on the cooling pipe bracket; the water outlet end of the second cooling water outlet pipe is fixed on the cooling pipe bracket; the second cooling water joint is provided with a water inlet end and a water outlet end. The water inlet end of the second cooling water joint is connected to the second cooling water inlet pipe, and the water outlet end of the second cooling water joint is connected to the second cooling water outlet pipe; the auxiliary cooling water pipe is fixed on the center mold, and the auxiliary cooling water pipe is connected to the second cooling water joint.

[0011] Further, it further includes a second flow dividing sleeve, one end of which is connected to the second cooling water inlet pipe, and the other end is arranged in the middle of the auxiliary cooling water pipe for introducing cooling water into the auxiliary cooling water pipe.

[0012] Further, the low-pressure assembly includes a first low-pressure bracket for the extraction block, a first extraction block, a second low-pressure bracket for the extraction block, and a second extraction block. The first low-pressure bracket for the extraction block is slidably connected to one side of the mold rack; the first extraction block is arranged corresponding to the first low-pressure bracket for the extraction block for performing low-pressure pressing on one side of the metal to be processed; the second low-pressure bracket for the extraction block is slidably connected to the other side of the mold rack; the second extraction block is arranged corresponding to the second low-pressure bracket for the extraction block for performing low-pressure pressing on the other side of the metal to be processed.

[0013] Further, it further includes a limiting member. The limiting member includes mold closing adjustment pads. There are two groups of the mold closing adjustment pads, and each group of the mold closing adjustment pads has at least two pieces. One group of the mold closing adjustment pads is symmetrically fixed on the first ejector block, and the other group of the mold closing adjustment pads is symmetrically fixed on the second ejector block. The mold closing adjustment pads are configured to: when in the mold closing position, abut against the low-pressure frame of the first ejector block or the low-pressure frame of the second ejector block to make the strokes of the first ejector block and the second ejector block consistent; when in the mold opening position, disengage from the low-pressure frame of the first ejector block or the low-pressure frame of the second ejector block.

[0014] Further, the limiting member further includes mold closing guide columns. There is one group of the mold closing guide columns, and each group of the mold closing guide columns has at least two pieces. One group of the mold closing guide columns is fixedly connected to the first ejector block, and the other group of the mold closing guide columns is fixedly connected to the second ejector block. The mold closing guide columns are configured to: when in the mold closing process, guide the low-pressure frame of the first ejector block or the low-pressure frame of the second ejector block to prevent misalignment between the low-pressure frame of the first ejector block and the first ejector block, and misalignment between the low-pressure frame of the second ejector block and the second ejector block.

[0015] Further, it further includes a heating pipe and a bottom mold heat insulation cavity. The heating pipe is arranged at the bottom of the mold frame, and there is at least one heating pipe for heating the liquid metal; the bottom mold heat insulation cavity is arranged at the bottom of the mold frame and is located below the heating pipe for forming a heat insulation layer at the bottom of the mold frame.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0017] The flow splitter is used to split the liquid metal to ensure stable filling. The main cooling member is used to cool the axial position of the liquid metal, the auxiliary cooling assembly is used to cool the upper part of the liquid metal, and the cooling ring is used to cool the middle part of the liquid metal. Thus, the hierarchy of cooling is ensured. The stability of the finished product is enhanced. It overcomes the problem that the finished product cast by this structure using the low-pressure casting process in the prior art generally has shrinkage porosity inside due to the large thickness of the upper part and heat concentration, resulting in leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a low-pressure metal casting mold provided by an embodiment of the present invention;

[0019] Figure 2 It is a top view schematic diagram of a low-pressure metal casting mold provided by an embodiment of the present invention;

[0020] Figure 3 is Figure 2 a sectional view taken along line A-A in

[0021] Figure 4 is Figure 3 An enlarged schematic view at position Q in

[0022] Figure 5 is Figure 3 An enlarged schematic view at position W in

[0023] Figure 6 is Figure 3 An enlarged schematic view at position E in

[0024] Figure 7 Schematic diagram of the structure of removing the upper support part of a low-pressure metal casting mold provided by an embodiment of the present utility model;

[0025] Figure 8 is Figure 7 An enlarged schematic view at position R in

[0026] Figure 9 Partial schematic view of a cooling component of a low-pressure metal casting mold provided by an embodiment of the present utility model.

[0027] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0028] 1. Mold frame; 11. Cooling pipe support; 12. Heating pipe; 13. Bottom mold heat insulation cavity;

[0029] 2. Low-pressure component; 21. First draw block low-pressure frame; 22. First draw block; 23. Second draw block low-pressure frame; 24. Second draw block;

[0030] 3. Machining cavity;

[0031] 4. Diverging cone;

[0032] 5. Upper support part;

[0033] 6. Cooling component; 61. Main cooling part; 611. First cooling water inlet pipe; 612. First cooling water outlet pipe; 613. First cooling water joint; 614. Main cooling water pipe; 615. First shunt sleeve; 62. Sub-cooling component; 621. Central mold; 622. Cover body; 623. Bolt; 624. Second cooling water inlet pipe; 625. Second cooling water outlet pipe; 626. Second cooling water joint; 627. Sub-cooling water pipe; 628. Second shunt sleeve; 63. Cooling ring;

[0034] 7. Limiting part; 71. Die closing adjustment cushion block; 72. Die closing guide post. Detailed implementation manners

[0035] To facilitate the understanding of this application, the following will provide a more comprehensive description of this application with reference to the relevant accompanying drawings. Embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of this application more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] It can be understood that spatial relationship terms such as "under", "below", "beneath", "underneath", "above", "over" etc. can be used herein to describe the relationship of one element or feature shown in the figure with other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" the other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device may also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0038] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection", if there is an electrical signal or data transfer between the connected circuits, modules, units, etc., should be understood as "electrically connected", "communicatively connected", etc.

[0039] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprise / include" or "have" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0040] As Figures 1 to 9As shown in the figure, a low-pressure metal casting mold includes a mold frame 1, a cooling pipe support 11, a low-pressure component 2, a processing cavity 3, a flow-dividing cone 4, an upper support member 5, and a cooling component 6. The cooling pipe support 11 is fixed on the mold frame 1; the low-pressure component 2 is arranged on both sides of the mold frame 1 and is used for low-pressure pressing of the metal to be processed; the processing cavity 3 is arranged between the low-pressure components 2; the flow-dividing cone 4 is fixed at the bottom of the mold frame 1 and is used for dividing the liquid metal to ensure stable filling; the upper support member 5 is arranged above the mold frame 1; the cooling component 6 includes a main cooling member 61, a secondary cooling assembly 62, and a cooling ring 63. The main cooling member 61 is arranged at the axial center position of the processing cavity 3 and is used for cooling the axial center position of the liquid metal; at least one secondary cooling assembly 62 is arranged in the upper part of the processing cavity 3 and is used for cooling the upper part of the liquid metal; the cooling ring 63 is arranged in the middle of the processing cavity 3 and is used for cooling the middle part of the liquid metal.

[0041] In this embodiment, the flow-dividing cone 4 is used to divide the liquid metal to ensure stable filling. The main cooling member 61 is used to cool the axial center position of the liquid metal, the secondary cooling assembly 62 is used to cool the upper part of the liquid metal, and the cooling ring 63 is used to cool the middle part of the liquid metal. Thus, the hierarchy of cooling is ensured and the stability of the finished product is enhanced.

[0042] In some embodiments, the main cooling member 61 includes a first cooling water inlet pipe 611, a first cooling water outlet pipe 612, a first cooling water joint 613, and a main cooling water pipe 614. The water inlet end of the first cooling water inlet pipe 611 is fixed on the cooling pipe support 11; the water outlet end of the first cooling water outlet pipe 612 is fixed on the cooling pipe support 11; the first cooling water joint 613 has a water inlet end and a water outlet end. The water inlet end of the first cooling water joint 613 is connected to the first cooling water inlet pipe 611, and the water outlet end of the first cooling water joint 613 is connected to the first cooling water outlet pipe 612; the main cooling water pipe 614 extends along the center of the processing cavity 3 from top to bottom, and the main cooling water pipe 614 is fixed on the flow-dividing cone 4, and the main cooling water pipe 614 is connected to the first cooling water joint 613.

[0043] In some embodiments, a first flow-dividing sleeve 615 is further included. One end of the first flow-dividing sleeve 615 is connected to the first cooling water inlet pipe 611, and the other end is arranged in the middle of the main cooling water pipe 614 and is used for introducing cooling water into the main cooling water pipe 614.

[0044] In this embodiment, with the cooperation of the first cooling water inlet pipe 611, the first cooling water outlet pipe 612, the first cooling water joint 613 and the main cooling water pipe 614, the cooling water enters the main cooling water pipe 614 to complete the cooling effect, and the cooling water that has absorbed heat is discharged from the first cooling water outlet pipe 612. At the same time, a first shunt sleeve 615 is provided. One end of the first shunt sleeve 615 is connected to the first cooling water inlet pipe 611, and the other end is arranged in the middle of the main cooling water pipe 614, which is used to introduce the cooling water to the bottom as much as possible, so that the main cooling water pipe 614 completes the cooling from bottom to top, and the cooling effect reaches the best.

[0045] In some embodiments, the secondary cooling assembly 62 includes a central mold 621, a cover 622 and bolts 623. The central mold 621 is arranged on the mold rack 1; the cover 622 is arranged on the central mold 621 and is used to fix the central mold 621 on the mold rack 1; the bolts 623 pass through the cover 622 and are threadedly connected to the mold rack 1, which is used to fix the cover 622 on the mold rack 1.

[0046] In this embodiment, the central mold 621 is fixed on the mold rack 1 by using the cover 622 and the bolts 623 to realize the fixation of the central mold 621.

[0047] In some embodiments, the secondary cooling assembly 62 further includes a second cooling water inlet pipe 624, a second cooling water outlet pipe 625, a second cooling water joint 626 and a secondary cooling water pipe 627. The water inlet end of the second cooling water inlet pipe 624 is fixed on the cooling pipe bracket 11; the water outlet end of the second cooling water outlet pipe 625 is fixed on the cooling pipe bracket 11; the second cooling water joint 626 is provided with a water inlet end and a water outlet end. The water inlet end of the second cooling water joint 626 is connected to the second cooling water inlet pipe 624, and the water outlet end of the second cooling water joint 626 is connected to the second cooling water outlet pipe 625; the secondary cooling water pipe 627 is fixed on the central mold 621, and the secondary cooling water pipe 627 is connected to the second cooling water joint 626.

[0048] In some embodiments, a second shunt sleeve 628 is further included. One end of the second shunt sleeve 628 is connected to the second cooling water inlet pipe 624, and the other end is arranged in the middle of the secondary cooling water pipe 627, which is used to introduce the cooling water into the secondary cooling water pipe 627.

[0049] In this embodiment, by the cooperation of the second cooling water inlet pipe 624, the second cooling water outlet pipe 625, the second cooling water joint 626 and the auxiliary cooling water pipe 627, the cooling water enters the auxiliary cooling water pipe 627 to complete the cooling effect, and the cooling water that has absorbed heat is discharged from the second cooling water outlet pipe 625. At the same time, a second shunt sleeve 628 is provided. One end of the second shunt sleeve 628 is connected to the second cooling water inlet pipe 624, and the other end is arranged in the middle of the auxiliary cooling water pipe 627, which is used to introduce the cooling water into the bottom of the auxiliary cooling water pipe 627 as much as possible, so that the auxiliary cooling water pipe 627 completes the cooling from bottom to top, and the cooling effect reaches the best.

[0050] In some embodiments, the low-pressure assembly 2 includes a first extraction block low-pressure frame 21, a first extraction block 22, a second extraction block low-pressure frame 23 and a second extraction block 24. The first extraction block low-pressure frame 21 is slidably connected to one side of the mold frame 1; the first extraction block 22 is correspondingly arranged with the first extraction block low-pressure frame 21 and is used for performing low-pressure pressing on one side of the metal to be processed; the second extraction block low-pressure frame 23 is slidably connected to the other side of the mold frame 1; the second extraction block 24 is correspondingly arranged with the second extraction block low-pressure frame 23 and is used for performing low-pressure pressing on the other side of the metal to be processed.

[0051] In this embodiment, a low-pressure is applied outside the first extraction block low-pressure frame 21 and the second extraction block low-pressure frame 23, so that the first extraction block 22 and the second extraction block 24 perform low-pressure pressing, and thus the processing of the metal to be processed in the processing cavity 3 is better completed.

[0052] In some embodiments, it further includes a limiting member 7. The limiting member 7 includes a mold closing adjustment spacer 71. There are two groups of the mold closing adjustment spacers 71, and each group of the mold closing adjustment spacers 71 has at least two pieces. One group of the mold closing adjustment spacers 71 is symmetrically fixed on the first extraction block 22, and the other group of the mold closing adjustment spacers 71 is symmetrically fixed on the second extraction block 24. The mold closing adjustment spacer 71 is configured to: when in the mold closing position, abut against the first extraction block low-pressure frame 21 or the second extraction block low-pressure frame 23, and is used to make the strokes of the first extraction block 22 and the second extraction block 24 consistent; when in the mold opening position, disengage from the first extraction block low-pressure frame 21 or the second extraction block low-pressure frame 23.

[0053] In this embodiment, the mold closing adjustment spacer 71 can be used to make the strokes of the first extraction block 22 and the second extraction block 24 consistent.

[0054] In some embodiments, the limiting member 7 further includes a mold-closing guiding post 72. There is a set of the mold-closing guiding posts 72, and each set of the mold-closing guiding posts 72 has at least two. One set of the mold-closing guiding posts 72 is fixedly connected to the first ejector block 22, and the other set of the mold-closing guiding posts 72 is fixedly connected to the second ejector block 24. The mold-closing guiding posts 72 are configured to: during the mold-closing process, guide the first ejector block low-pressure bracket 21 or the second ejector block low-pressure bracket 23 to prevent misalignment between the first ejector block low-pressure bracket 21 and the first ejector block 22, and misalignment between the second ejector block low-pressure bracket 23 and the second ejector block 24.

[0055] In this embodiment, the mold-closing guiding posts 72 are used to guide the first ejector block low-pressure bracket 21 and the second ejector block low-pressure bracket 23, so that misalignment will not occur during the crimping process, thereby increasing the probability of good products.

[0056] In some embodiments, it further includes a heating tube 12 and a bottom mold heat insulation cavity 13. The heating tube 12 is arranged at the bottom of the mold frame 1, and there is at least one heating tube 12 for heating the liquid metal; the bottom mold heat insulation cavity 13 is arranged at the bottom of the mold frame 1 and is located below the heating tube 12 for forming a heat insulation layer at the bottom of the mold frame 1.

[0057] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0058] The flow splitter cone is used to split the liquid metal to ensure stable filling. The main cooling member is used to cool the axial position of the liquid metal, the auxiliary cooling assembly is used to cool the upper part of the liquid metal, and the cooling ring is used to cool the middle part of the liquid metal. Thus, the hierarchy of cooling is ensured. The stability of the finished product is enhanced. It overcomes the problem that the finished product cast by this structure using the low-pressure casting process in the prior art generally has shrinkage porosity inside due to a large thickness in the upper part and heat concentration, resulting in leakage.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-pressure metal casting mold, characterized in that: include: Mould frame (1); A cooling pipe bracket (11), which is fixed on the mold frame (1); A low-pressure assembly (2), which is arranged on both sides of the mold frame (1) and is used for low-pressure crimping of the metal to be processed; A processing chamber (3) disposed between the low-pressure components (2); A diverter cone (4) fixed to the bottom of the mold frame (1) for diverting the liquid metal to ensure smooth filling; An upper support member (5) disposed above the mold frame (1); A cooling component (6), comprising: A main cooling element (61) is arranged at the axial center of the processing chamber (3) and is used to cool the axial center of the liquid metal; A secondary cooling assembly (62), at least one of which is disposed at the upper portion of the processing chamber (3) and is used to cool the upper portion of the liquid metal; A cooling ring (63) is arranged in the middle of the processing chamber (3) and is used to cool the middle of the liquid metal.

2. A low-pressure metal casting mold according to claim 1, characterized in that: The main cooling element (61) comprises: A first cooling water inlet pipe (611), the water inlet end of which is fixed on the cooling pipe bracket (11); A first cooling water outlet pipe (612), the water outlet end of which is fixed on the cooling pipe bracket (11); A first cooling water joint (613), which is provided with a water inlet end and a water outlet end, the water inlet end of the first cooling water joint (613) is connected to the first cooling water inlet pipe (611), and the water outlet end of the first cooling water joint (613) is connected to the first cooling water outlet pipe (612); A main cooling water pipe (614) is arranged from top to bottom along the center of the processing chamber (3), and the main cooling water pipe (614) is fixed on the diverter cone (4). The main cooling water pipe (614) is connected to the first cooling water joint (613).

3. A low-pressure metal casting mold according to claim 2, characterized in that: It also includes a first diversion sleeve (615), one end of which is connected to the first cooling water inlet pipe (611), and the other end is arranged in the middle of the main cooling water pipe (614) for introducing cooling water into the main cooling water pipe (614).

4. A low-pressure metal casting mold according to claim 1, characterized in that: The auxiliary cooling component (62) comprises: A central mold (621) is arranged on the mold frame (1); A cover body (622) is provided on the central mold (621) and is used to fix the central mold (621) on the mold frame (1); A bolt (623) is passed through the cover body (622) and is threadedly connected to the mold frame (1) for fixing the cover body (622) on the mold frame (1).

5. A low-pressure metal casting mold according to claim 4, characterized in that: The auxiliary cooling component (62) also includes: A second cooling water inlet pipe (624), the water inlet end of which is fixed on the cooling pipe bracket (11); A second cooling water outlet pipe (625), the water outlet end of which is fixed on the cooling pipe bracket (11); A second cooling water joint (626), which is provided with a water inlet end and a water outlet end, the water inlet end of the second cooling water joint (626) is connected to the second cooling water inlet pipe (624), and the water outlet end of the second cooling water joint (626) is connected to the second cooling water outlet pipe (625); An auxiliary cooling water pipe (627) is fixed on the central mold (621), and the auxiliary cooling water pipe (627) is connected to the second cooling water joint (626).

6. A low-pressure metal casting mold according to claim 5, characterized in that: It also includes a second diversion sleeve (628), one end of which is connected to the second cooling water inlet pipe (624), and the other end is arranged in the middle of the auxiliary cooling water pipe (627) for introducing cooling water into the auxiliary cooling water pipe (627).

7. A low pressure metal casting mold according to claim 1, characterized in that: The low-voltage component (2) comprises: A first low-pressure drawer frame (21) which is slidably connected to one side of the mold frame (1); A first drawer block (22), which is arranged corresponding to the first drawer block low-pressure frame (21) and is used for low-pressure crimping of one side of the metal to be processed; A second low-pressure drawer frame (23) which is slidably connected to the other side of the mold frame (1); The second drawer block (24) is arranged corresponding to the second drawer block low-pressure frame (23) and is used for low-pressure crimping of the other side of the metal to be processed.

8. A low pressure metal casting mold according to claim 7, characterized in that: It also includes a limiting member (7), which includes: The mold adjustment pads (71) are provided with two groups, each group of the mold adjustment pads (71) is provided with at least two blocks, one group of the mold adjustment pads (71) is symmetrically fixed on the first drawer block (22), and the other group of the mold adjustment pads (71) is symmetrically fixed on the second drawer block (24), and the mold adjustment pads (71) are configured as follows: when in the mold closing position, they abut against the first drawer block low-pressure frame (21) or the second drawer block low-pressure frame (23) to keep the stroke of the first drawer block (22) and the second drawer block (24) consistent; when in the mold opening position, they are separated from the first drawer block low-pressure frame (21) or the second drawer block low-pressure frame (23).

9. A low-pressure metal casting mold according to claim 8, characterized in that: The limiting member (7) further comprises: A mold closing guide column (72) is provided with a group, each group of the mold closing guide columns (72) is provided with at least two columns, one group of the mold closing guide columns (72) is fixedly connected to the first drawer block (22), and the other group of the mold closing guide columns (72) is fixedly connected to the second drawer block (24), and the mold closing guide columns (72) are configured to: when in the mold closing process, guide the first drawer block low-pressure frame (21) or the second drawer block low-pressure frame (23) to prevent the first drawer block low-pressure frame (21) from being misaligned with the first drawer block (22), and the second drawer block low-pressure frame (23) from being misaligned with the second drawer block (24).

10. A low pressure metal casting mold according to claim 1, characterized in that: Also includes: A heating tube (12), which is arranged at the bottom of the mold frame (1), and at least one heating tube (12) is provided, and is used to heat the liquid metal; A bottom mold heat-insulating cavity (13) is arranged at the bottom of the mold frame (1) and is located below the heating tube (12), and is used to form a heat-insulating layer at the bottom of the mold frame (1).

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