Runner structure of deep-cavity casting
By optimizing the gating structure of deep-cavity castings, the problems of high flow resistance of molten metal and difficulty in gas discharge in deep-cavity castings were solved, achieving uniform flow of molten metal and effective gas discharge, thus improving the forming quality and density of the castings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-10
AI Technical Summary
During the die casting process of deep cavity castings, the molten metal faces high flow resistance within the deep cavity structure, making it difficult for gas to escape. This leads to frequent porosity and looseness defects, affecting the quality of the castings.
A gating structure for a deep-cavity casting was designed, including a gating system, branch gating systems, overflow channels, and venting channels. By gradually reducing the cross-sectional area and optimizing the arrangement of the venting channels, the uniform flow of molten metal and the effective discharge of gas are ensured.
It improves the molding quality and density of deep cavity castings, reduces porosity and looseness defects, and ensures the smoothness of the filling process and the overall quality of the castings.
Smart Images
Figure CN224101805U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a runner structure of deep cavity type casting. BACKGROUND
[0002] The pressure casting part is a kind of pressure casting part, is using the pressure casting equipment of casting mold, the metal of heating liquid is poured into the inlet of pressure casting equipment, and the metal part of the shape and size limited by pressure casting in mold is cast, such part is usually called pressure casting part, and deep cavity type casting in pressure casting product is a kind of casting with deep cavity structure, which has wide application in industrial production, in the pressure casting forming process of metal casting with deep cavity, due to the deep cavity structure, the metal liquid needs to flow a long distance in the narrow space of deep cavity during pressure casting, is easily subjected to greater flow resistance, and the deep cavity structure increases the difficulty of gas discharge in the cavity, which is not conducive to further reducing the generation probability of internal porosity and porosity defects of deep cavity type casting. SUMMARY
[0003] The utility model discloses a runner structure of deep cavity type casting to overcome the above-mentioned defects or problems existing in the background art.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] A runner structure of deep cavity type casting, including runner, runner is connected branch runner, branch runner bottom is communicated to the front deep cavity end face of the front side of forming cavity, and the front deep cavity end face is concave and provided with front deep cavity, and the sub-branch of branch runner is arranged along the edge of front deep cavity end face, the cross-sectional area of runner, branch runner gradually reduces along the runner direction, and overflow groove is arranged on the both sides of the middle part of forming cavity, and a plurality of first exhaust channels are arranged on the side of forming cavity away from runner.
[0006] In some embodiments of the utility model, the sub-branch end is located on the side away from the runner, and the two sub-branch ends are not communicated with each other.
[0007] In some embodiments of the utility model, the front deep cavity is symmetrically arranged on the front deep cavity end face, and the two sub-branches of the branch runner are symmetrically arranged.
[0008] In some embodiments of the utility model, the runner includes a cake part, the cake part is connected to the cross runner through the straight runner, and the cross runner is connected to the branch runner.
[0009] In some embodiments of the utility model, the side surface of the forming cavity is provided with a plurality of recessed parts, and a plurality of thimble channels are arranged around the recessed part of any side surface.
[0010] In some embodiments of the utility model, the overflow groove is communicated with the second exhaust channel at least one side of the forming cavity.
[0011] In some embodiments of the utility model, the first exhaust channel and the second exhaust channel are communicated to the converging exhaust channel, and the converging exhaust channel is provided with an air outlet channel at the other side.
[0012] In some embodiments of the utility model, the converging exhaust channel comprises a first horizontal channel and a second horizontal channel, the first exhaust channel and the second exhaust channel are communicated to the first horizontal channel, the first horizontal channel is connected to the second horizontal channel through side exhaust channels at both ends, and the second horizontal channel is connected to the air outlet channel at the middle part.
[0013] In some embodiments of the utility model, the side away from the pouring channel of the forming cavity is provided with a rear deep cavity end face, the rear deep cavity end face is provided with a rear deep cavity, the first exhaust channel comprises a front exhaust channel, the front exhaust channel is arranged along the edge of the rear deep cavity, the front exhaust channel is connected to the rear deep cavity end face through a plurality of connecting air channels, and the front exhaust channel is connected to the rear exhaust channel at the end.
[0014] In some embodiments of the utility model, two first exhaust channels are arranged corresponding to each rear deep cavity.
[0015] From the above description of the utility model, compared with the prior art, the utility model has the following advantages
[0016] Beneficial effects:
[0017] 1. The sub-branch of the branch runner is arranged along the edge of the front deep cavity end face, so that the filled metal liquid can flow into the forming cavity along the edge of the front deep cavity end face of the forming cavity more uniformly, the turbulence and vortex in the filling process are reduced, and the forming quality of the deep cavity casting is improved.
[0018] 2. The first exhaust channel is arranged at the side away from the pouring channel of the forming cavity, when the metal liquid enters the forming cavity, the gas in the forming cavity is pressed away from the pouring channel, so that the gas can be more smoothly discharged from the other side of the forming cavity, the accumulation of the gas in the cavity is avoided to form pores and air line defects, the gas resistance of the metal liquid in the filling process is reduced, the metal liquid flows more smoothly, the metal liquid flows more smoothly from the front deep cavity end face to the rear, and the metal liquid flows more smoothly to each part of the forming cavity, which is beneficial to realize good filling effect and improve the compactness and surface quality of the casting.
[0019] 3 The first exhaust channel comprises a front exhaust channel arranged along the edge of the rear deep cavity, and the front exhaust channel is connected to the end face of the rear deep cavity through a plurality of connecting channels, thereby effectively avoiding the accumulation of gas in the rear deep cavity during the molding of the casting, effectively avoiding the trapping of gas in the rear deep cavity to form pores and porosity defects, improving the quality and compactness of the casting, and the plurality of connecting channels arranged at the bottom of the front exhaust channel effectively prevent uneven gas pressure caused by poor local exhaust of the rear deep cavity, which affects the flow and filling of the metal liquid, thereby ensuring the consistency of the overall quality of the casting. The first exhaust channel cooperates with the second exhaust channel located on both sides of the middle part of the molding cavity to achieve better exhaust effect.
[0020] 4 The cross-sectional area of the ingate and the branch gate gradually decreases, so that the filling process of the casting is smooth and stable, the feeding is orderly, the speed, temperature and pressure loss are reduced, the transmission effect is good, the metal liquid fills the cavity stably, the turbulent flow and turbulent flow are reduced, and the gas is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following briefly introduces the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0022] Figure 1 The structure of the present application is shown in the figure.
[0023] Figure 2 The structure of the present application is shown in the figure. Figure 1 The enlarged view of A of the present application is shown in the figure.
[0024] Figure 3 The arrangement of the branch gate of the present application is shown in the figure.
[0025] Figure 4 The structure of the present application is shown in the figure. Figure 3 The enlarged view of B of the present application is shown in the figure.
[0026] MAIN REFERENCE MARK DESCRIPTION
[0027] 1, inlet, 10, runner, 11, cake, 12, sprue, 13, cross, 2, branch runner, 20, sub-branch, 21, front section, 22, middle section, 23, rear section, 3, cavity, 30, front deep cavity, 31, recess, 32, rear deep cavity, 33, front deep cavity end face, 4, overflow groove, 40, ladle, 41, second exhaust passage, 5, ejector pin, 6, first exhaust passage, 60, front exhaust passage, 61, connecting passage, 62, rear exhaust passage, 7, converging exhaust passage, 70, first horizontal passage, 71, second horizontal passage, 72, side exhaust passage, 73, exhaust passage, 74, rear mold exhaust passage. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model, and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0029] In the claims, description and drawings of the utility model, unless otherwise explicitly limited, the terms such as 'first','second' or 'third' are used only to distinguish different objects, and are not used to describe a specific order.
[0030] In the claims, description and drawings of the utility model, unless otherwise explicitly limited, for the orientation words, such as the terms 'center', 'transverse','vertical', 'horizontal','vertical', 'top', 'bottom', 'inner', 'outer', 'upper', 'lower', 'front','rear', 'left', 'right', 'clockwise', 'counterclockwise' indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the utility model.
[0031] In the claims, description and drawings of the utility model, unless otherwise explicitly limited, such as the terms 'fixedly connected' or 'fixedly connected', should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes irremovable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.
[0032] In the claims, description and drawings of the utility model, such as the terms 'include', 'have' and their variants, are intended to be 'inclusive but not limited to'.
[0033] Embodiment 1, see Figures 1-4 :
[0034] A runner structure of a deep cavity casting includes a sprue 1, a runner 10, the bottom of the sprue 1 is communicated with the runner 10, the runner 10 is communicated with a branch runner 2, and the branch runner 2 is communicated to a forming cavity 3.
[0035] As an embodiment, the cross-sectional area of the runner 10 and the branch runner 2 gradually decreases along the feeding direction, the runner 10 includes a biscuit part 11, the biscuit part 11 is connected to a cross runner 13 through a straight runner 12, and the cross runner 13 is connected to the branch runner 2; preferably, the cross-sectional area of the biscuit part 11 is greater than that of the straight runner 12, the cross-sectional area of the straight runner 12 is 480-600 mm 2 , the cross-sectional area of the cross runner 13 is 420-500 mm 2 , and the cross-sectional area of the branch runner 2 is less than 430 mm 2 .
[0036] The bottom of the branch runner 2 is communicated to a front deep cavity end face 33 of the front side of the forming cavity 3, the front deep cavity end face 33 is concavely provided with a front deep cavity 30, and the sub-branches 20 of the branch runner 2 are arranged along the edges of the front deep cavity end face 33; the ends of the two sub-branches 20 are located away from the runner 10 and are not communicated with each other.
[0037] As an embodiment, the front deep cavities 30 are symmetrically arranged on the front deep cavity end face 33, and the two sub-branches 20 of the branch runner 2 are symmetrically arranged. Preferably, the number of the front deep cavities 30 is four and they are arranged at the four corners of the front deep cavity end face 33, so that part of the edges of the front deep cavities 30 are the edges of the front deep cavity end face 33, the sub-branches 20 include a front section 21, a middle section 22 and a rear section 23 which are sequentially connected, the front section 21 of the sub-branch 20 located on the left side extends along the edge of the front deep cavity 30 located on the left front, the middle section 22 of the sub-branch 20 located on the left side extends along the edge of the front deep cavity end face 33 between the front deep cavities 30 located on the left front and rear, and the rear section 23 of the sub-branch 20 located on the left side extends along the edge of the front deep cavity 30 located on the left rear; the front section 21 of the sub-branch 20 located on the right side extends along the edge of the front deep cavity 30 located on the right front, the middle section 22 extends along the edge of the front deep cavity end face 33 between the front deep cavities 30 located on the right front and rear, and the rear section 23 extends along the edge of the front deep cavity 30 located on the right rear.
[0038] As an embodiment, overflow grooves 4 are arranged on both sides of the middle part of the forming cavity 3, one end of the overflow groove 4 is provided with a ladle 40, and at least one overflow groove 4 on either side of the forming cavity 3 is communicated with a second exhaust channel 41. It can be understood that the second exhaust channel 41 is communicated to the corresponding overflow groove 4 through the ladle 40.
[0039] As an implementation form, the forming cavity 3 is provided with a plurality of recesses 31 on the side, and the recesses 31 on any side are correspondingly connected with a plurality of ejector pin channels, and the ejector pin channels are used to match the arrangement of the ejector pins 5.
[0040] As an implementation form, the forming cavity 3 is provided with a plurality of first exhaust channels 6 on the side away from the sprue 10, and the side of the forming cavity 3 away from the sprue 10 is the rear side of the forming cavity 3, and the rear side of the forming cavity 3 is provided with a rear deep cavity end face, and the rear deep cavity end face is provided with a rear deep cavity 32.
[0041] As an implementation form, each rear deep cavity 32 is correspondingly provided with two first exhaust channels 6. Preferably, the rear deep cavity end face is smaller than the front deep cavity end face 33, the number of the rear deep cavities 32 is 2, and the total number of the first exhaust channels 6 is correspondingly 4.
[0042] As an implementation form, the first exhaust channel 6 and the second exhaust channel 41 are connected to the converging exhaust channel 7, and the other side of the converging exhaust channel 7 is provided with an exhaust passage 73.
[0043] As an implementation form, the first exhaust channel 6 includes a front exhaust channel 60, the front exhaust channel 60 is arranged along the edge of the rear deep cavity 32, and the front exhaust channel 60 is connected to the rear deep cavity end face through a plurality of connecting channels 61, so as to effectively avoid the accumulation of gas in the rear deep cavity 32 during the forming of the casting, so that the gas can be quickly discharged through the first exhaust channel 6, and the gas is effectively avoided to be trapped in the deep cavity to form pores and loose defects, and the quality and compactness of the casting are improved. The end of the front exhaust channel 60 is connected to the rear exhaust channel 62, and the end of the front exhaust channel 60 is connected to the converging exhaust channel 7 through the rear exhaust channel 62.
[0044] As an implementation form, the converging exhaust channel 7 includes a first horizontal channel 70 and a second horizontal channel 71, the first exhaust channel 6 and the second exhaust channel 41 are connected to the first horizontal channel 70, the first horizontal channel 70 is connected to the second horizontal channel 71 through a side exhaust channel 72 at both ends, and the second horizontal channel 71 is connected to the exhaust passage 73 at the middle.
[0045] As an implementation form, the exhaust passage 73 is connected to the rear mold exhaust passage 74, which is helpful for exhaust.
[0046] As an implementation form, the number of the converging exhaust channels 7 is two, the first exhaust channel 6 and the second exhaust channel 41 located on the same side of the forming cavity 3 are connected to the corresponding converging exhaust channel 7, specifically, the first exhaust channel 6 and the second exhaust channel 41 located on the left side are connected to the converging exhaust channel 7 located on the left side, and the first exhaust channel 6 and the second exhaust channel 41 located on the right side are connected to the converging exhaust channel 7 located on the right side.
[0047] The description of the above specification and the embodiments are used to explain the protection scope of the present application, but do not constitute the limitation of the protection scope of the present application. Through the inspiration of the present application or the above embodiments, the ordinary skilled in the art combines the common knowledge, the ordinary technical knowledge in the art and / or the prior art, and obtains the modification, equivalent replacement or other improvement of the present application embodiment or one part of the technical features through logical analysis, reasoning or limited test, which should be included in the protection scope of the present application.
Claims
1. A runner structure for a deep-cavity casting, characterized by: The sprue (10) is connected to the branch sprue (2), the bottom of the branch sprue (2) is communicated to the front deep cavity end face (33) of the front side of the forming cavity (3), the front deep cavity end face (33) is concavely provided with the front deep cavity (30), the sub-branches (20) of the branch sprue (2) are arranged along the edge of the front deep cavity end face (33), the cross-sectional area of the sprue (10) and the branch sprue (2) gradually decreases along the feeding direction, the middle of the forming cavity (3) is provided with the overflow groove (4) on both sides, and the side of the forming cavity (3) away from the sprue (10) is provided with the first exhaust channel (6).
2. A runner structure for a deep-cavity casting according to claim 1, characterized in that: The ends of the sub-branches (20) are located on the side away from the sprue (10), and the ends of the two sub-branches (20) are not communicated with each other.
3. A runner structure for a deep-cavity casting according to claim 2, wherein: The front deep cavities (30) are symmetrically arranged on the front deep cavity end face (33), and the two sub-branches (20) of the branch sprue (2) are symmetrically arranged.
4. The runner structure of a deep-cavity casting according to claim 1, wherein: The sprue (10) comprises a cake part (11), the cake part (11) is connected to the cross sprue (13) through the straight sprue (12), and the cross sprue (13) is connected to the branch sprue (2).
5. The runner structure of a deep-cavity casting according to claim 1, wherein: The forming cavity (3) is provided with a plurality of recesses (31) on the side, and a plurality of ejector pin channels are correspondingly arranged around the recess (31) on any side.
6. The runner structure of a deep-cavity casting according to claim 1, characterized in that: The overflow groove (4) is provided with a slag ladle (40) at one end, and at least one overflow groove (4) on any side of the forming cavity (3) is communicated with the second exhaust channel (41).
7. A runner structure for a deep-cavity casting according to claim 6, wherein: The first exhaust channel (6) and the second exhaust channel (41) are communicated to the converging exhaust channel (7), and the other side of the converging exhaust channel (7) is provided with an air outlet channel (73).
8. A runner structure for a deep-cavity casting according to claim 7, wherein: The converging exhaust channel (7) comprises a first horizontal channel (70) and a second horizontal channel (71), the first exhaust channel (6) and the second exhaust channel (41) are communicated to the first horizontal channel (70), the first horizontal channel (70) is connected to the second horizontal channel (71) through the side exhaust channel (72) at both ends, and the second horizontal channel (71) is connected to the air outlet channel (73) at the middle.
9. A runner structure for a deep-cavity casting according to any one of claims 1 to 8, wherein: The side of the forming cavity (3) away from the sprue (10) is provided with a rear deep cavity end face, the rear deep cavity end face is provided with a rear deep cavity (32), the first exhaust channel (6) comprises a front exhaust channel (60), the front exhaust channel (60) is arranged along the edge of the rear deep cavity (32), the front exhaust channel (60) is connected to the rear deep cavity end face through a plurality of connecting air channels (61), and the end of the front exhaust channel (60) is connected to the rear exhaust channel (62).
10. A runner structure for a deep-cavity casting according to claim 9, wherein: Each rear deep cavity (32) is correspondingly provided with two first exhaust channels (6).