Casting structure of die-casting die of filter cover plate

Abstract

The utility model relates to a casting structure of a die-casting die of a filter cover plate, the casting structure comprises a vertical runner, a main sprue communicated with the upper end of the vertical runner, a main runner communicated with the lower end of the vertical runner and two transverse runners, the main runner is branched to form two branched runners, the tail end of each branched runner is connected with a straight runner, and the transverse runners are communicated with the vertical runner. The middle parts of one sides of the two transverse runners are respectively communicated with the corresponding straight runners, the other sides of the transverse runners are provided with a plurality of slender sub-runners along the length direction, the tail ends of the sub-runners are provided with flow gates, the plurality of flow gates are distributed on one side of the cavity side by side, the flow gates are flat, and the widths of the flow gates are gradually increased towards the direction of the cavity; and the transverse flow channel and the plurality of branch flow channels connected with the transverse flow channel are integrally of a comb-shaped structure. According to the comb-shaped multi-fork flow gate structure, the filling speed and the filling distance of each fork of flow gate are basically consistent, and local surface defects caused by internal air entrapment are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filter cover plate manufacturing, in particular to a die-casting mold pouring structure of a filter cover plate. Background Art

[0002] The equipment manufacturer has developed a filter cover with a wall thickness of only 2.0mm and an overall size of 363mmx132mmx19mm. The blank is required to have no cold shut spots, no large surface processing, and a flatness of less than 0.2. It is very difficult to meet the requirements without shaping the blank. Therefore, it is necessary to design a corresponding mold structure for this product. Conventional casting structures cannot meet the requirements for such thin-walled, high-flatness die-casting parts. The designed casting structure needs to overcome the local surface defects caused by internal air entrainment, and at the same time avoid the impact of mold opening and shrinkage deformation of waste in the runner on the casting. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a casting structure of a die-casting mold for a filter cover plate. The comb-shaped multi-fork ingates are designed to ensure that the filling speed and filling distance of each fork of the ingates are basically consistent, thereby avoiding local surface defects caused by internal air entrainment; a criss-cross groove and a cylindrical groove are designed to forcibly hold the waste material in the flow channel, thereby reducing the influence of mold opening and shrinkage deformation of the waste material in the flow channel on the casting.

[0004] The utility model solves its technical problem by adopting the following technical scheme: providing a casting structure of a die-casting mold for a filter cover plate, the casting structure being a channel for molten metal to enter a cavity of the filter cover plate, the casting structure comprising a vertical flow channel, a main gate connected to the upper end of the vertical flow channel, a main flow channel connected to the lower end of the vertical flow channel, and two transverse flow channels, the main flow channel bifurcates to form two bifurcated flow channels, each of the end of the bifurcated flow channel is connected to a direct flow channel, the middle of one side of the two transverse flow channels is respectively connected to the corresponding direct flow channel, a plurality of slender branch flow channels are arranged along the length direction on the other side of the transverse flow channel, an inner gate is provided at the end of the branch flow channel, and the plurality of inner gates are distributed side by side on one side of the cavity, the inner gate is flat, the width of the inner gate gradually increases toward the cavity direction, the transverse flow channel and the plurality of branch flow channels connected to the transverse flow channel are in a comb-like structure as a whole.

[0005] As a supplement to the technical solution described in the utility model, a cross-shaped groove is provided above the connection between the cross-flow channel and the straight-flow channel.

[0006] As a supplement to the technical solution described in the utility model, a cylindrical groove is provided below the middle of the direct current channel.

[0007] As a supplement to the technical solution described in the utility model, a circular arc corner is provided between the end of the bifurcated flow channel and the straight flow channel.

[0008] As a supplement to the technical solution described in the utility model, it also includes a plurality of overflow grooves, which are distributed side by side on the other side of the cavity, and each overflow groove is connected to an exhaust groove.

[0009] As a supplement to the technical solution described in the utility model, the thickness of the inner gate is 1.2 mm.

[0010] As a supplement to the technical solution described in the utility model, a counter-flow groove is provided in the middle of the other side of the cross flow channel, and the counter-flow groove is aligned with the end of the straight flow channel.

[0011] As a supplement to the technical solution described in the utility model, the bottom surface of the connection between the runner and the ingates is continuously raised toward the cavity, and the upper end surface of the ingates is flush with the upper end surface of the runner.

[0012] Beneficial effects: The utility model relates to a casting structure of a die-casting mold for a filter cover plate, in which a cross runner and several branch runners connected to the cross runner are in a comb-like structure as a whole. The comb-like multi-fork ingode structure is designed to ensure that the filling speed and filling distance of each fork of the ingode are basically consistent, thereby avoiding local surface defects caused by internal air entrainment; a M-shaped groove and a cylindrical groove are designed to forcibly hold the waste material in the flow channel, thereby reducing the influence of mold opening and shrinkage and deformation of the waste material in the flow channel on the casting; the molten metal coming out of the direct flow channel first enters the offset groove to slow down the flow rate and then diffuses to the cross runner, thus avoiding direct impact on the cross runner and effectively reducing the flow rate; the slender branch runner can shorten the cooling time and improve the rhythm, and can also avoid heat concentration when the runner is thick, thereby aggravating the shrinkage after mold opening, and easily causing greater deformation of the casting; the bottom surface of the connection between the branch runner and the ingode is continuously raised toward the cavity, thus also slowing down a part of the flow rate, so that the molten metal enters the cavity smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the utility model at different angles;

[0015] Figure 3 It is a front view of the utility model after removing the filter cover plate, the exhaust groove and the overflow groove.

[0016] Illustration: 1. Main gate, 2. Vertical runner, 3. Main runner, 4. Bifurcated runner, 5. Straight runner, 6. Horizontal runner, 7. Cylindrical groove, 8. M-shaped groove, 9. Branch runner, 10. Hedge groove, 11. Ingate, 12. Filter cover, 13. Vent groove, 14. Arc corner, 15. Overflow groove. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0018] The embodiment of the utility model relates to a die-casting mold casting structure of a filter cover plate, such as Figure 1-3 As shown, the pouring structure is a channel for the metal liquid to enter the filter cover plate cavity. The pouring structure includes a vertical runner 2, a main gate 1 connected to the upper end of the vertical runner 2, a main flow channel 3 connected to the lower end of the vertical runner 2, and two cross runners 6. The main flow channel 3 is bifurcated to form two bifurcated runners 4, and each end of the bifurcated runner 4 is connected to a straight flow channel 5. The middle of one side of the two cross runners 6 is respectively connected to the corresponding straight flow channel 5. The other side of the cross runner 6 is arranged with a plurality of slender branch runners 9 along the length direction. The branch runner 9 should be thin rather than thick. The slenderness of the branch runner 9 can shorten the cooling time and improve the beat. It can avoid heat concentration when the runner is thick, and the shrinkage is aggravated after the mold is opened, which may easily lead to greater deformation of the casting. An inner gate 11 is provided at the end of the branch channel 9, and several inner gates 11 are distributed side by side on one side of the cavity. The inner gate 11 is flat, and the width of the inner gate 11 gradually increases toward the cavity. The cross runner 6 and several branch runners 9 connected to the cross runner 6 are comb-shaped as a whole. The design of this comb-shaped multi-fork inner gate structure is verified by CAE software analysis to ensure that the filling speed and filling distance of each fork of the inner gate 11 are basically consistent, so as to avoid local surface defects caused by internal air entrainment.

[0019] A cross-flow channel 6 is provided above the connection with the direct flow channel 5. The cross-flow channel 6 is provided with a cross-flow channel 8, which forms cross-flow ribs. The cross-flow ribs are used to forcibly hold the excess waste formed in the cross-flow channel 6 and the branch flow channel 9, thereby reducing the impact of mold opening and main flow channel shrinkage deformation on the casting.

[0020] A cylindrical groove 7 is provided below the middle of the straight flow channel 5, which forms a limiting column. The limiting column can forcibly hold the excess waste formed in the straight flow channel 5, the bifurcated flow channel 4 and the main flow channel 3, thereby reducing the impact of mold opening and shrinkage deformation of the main flow channel on the casting.

[0021] A circular arc corner 14 is provided between the end of the bifurcated flow channel 4 and the straight flow channel 5, and the circular arc corner 14 is provided to achieve a smooth turning transition.

[0022] It also includes a plurality of overflow grooves 15, which are distributed side by side on the other side of the cavity, and each overflow groove 15 is connected to an exhaust groove 13; the structure equipped with the overflow grooves 15 and the exhaust grooves 13 can effectively reduce defects such as air holes and cold shuts.

[0023] The thickness of the inner gate 11 is only 1.2 mm, and the waste material formed in the inner gate 11 can be broken off with a little force, and the fracture is neat and has little deformation.

[0024] A counter-flow groove 10 is provided in the middle of the other side of the cross flow channel 6, and the counter-flow groove 10 is aligned with the end of the straight flow channel 5; the molten metal coming out of the straight flow channel 5 first enters the counter-flow groove 10 to slow down the flow rate and then diffuses to the cross flow channel 6, which can avoid direct impact on the cross flow channel 6 and effectively reduce the flow rate.

[0025] The bottom surface of the connection between the branch channel 9 and the inner gate 11 is continuously raised toward the cavity, which can also slow down a part of the flow rate, so that the molten metal enters the cavity smoothly. The upper end surface of the inner gate 11 is flush with the upper end surface of the branch channel 9.

[0026] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0029] The above is a detailed introduction to the die-casting mold casting structure of a filter cover provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A casting structure of a die-casting mold for a filter cover plate, the casting structure being a channel for molten metal to enter a cavity of the filter cover plate, the casting structure comprising a vertical flow channel (2), a main gate (1) connected to the upper end of the vertical flow channel (2), a main flow channel (3) connected to the lower end of the vertical flow channel (2), and two cross flow channels (6), characterized in that: The main flow channel (3) is bifurcated to form two bifurcated flow channels (4), and the end of each bifurcated flow channel (4) is connected to a direct flow channel (5). The middle of one side of the two cross flow channels (6) is respectively connected to the corresponding direct flow channel (5). The other side of the cross flow channel (6) is provided with a plurality of slender branch flow channels (9) along the length direction. The end of the branch flow channel (9) is provided with an inner gate (11). The plurality of inner gates (11) are distributed side by side on one side of the cavity. The inner gate (11) is flat, and the width of the inner gate (11) gradually increases toward the cavity. The cross flow channel (6) and the plurality of branch flow channels (9) connected to the cross flow channel (6) are overall in a comb-like structure.

2. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: A cross-shaped groove (8) is provided above the connection between the cross-flow channel (6) and the straight-flow channel (5).

3. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: A cylindrical groove (7) is provided below the middle of the direct current channel (5).

4. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: A circular arc corner (14) is provided between the end of the bifurcated flow channel (4) and the straight flow channel (5).

5. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: It also includes a plurality of overflow grooves (15), which are distributed side by side on the other side of the cavity, and each overflow groove (15) is connected to an exhaust groove (13).

6. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: The thickness of the inner gate (11) is 1.2 mm.

7. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: A counter groove (10) is provided in the middle of the other side of the cross flow channel (6), and the counter groove (10) is aligned with the end of the straight flow channel (5).

8. The die-casting mold pouring structure of a filter cover plate according to claim 1, characterized in that: The bottom surface of the connection between the runner (9) and the inner gate (11) is continuously raised toward the cavity, and the upper end surface of the inner gate (11) is flush with the upper end surface of the runner (9).

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