Exhaust sleeve for alloy casting mold

Abstract

The exhaust sleeve comprises a fixing base and a first connecting piece, the fixing base is installed in an exhaust hole, a first exhaust channel is formed between the outer wall of the fixing base and the inner wall of the exhaust hole, the bottom of the fixing base is provided with an installation cavity with a lower opening, and the fixing base is provided with a first air outlet hole located above the installation cavity; the upper end and the lower end of the first air outlet hole communicate with the exterior above the fixing base and the mounting cavity correspondingly. The first connecting piece is mounted in the mounting cavity; the fixing seat is mounted in the exhaust hole, so that the first exhaust channel is formed between the outer wall of the fixing seat and the inner wall of the exhaust hole, the fixing seat is provided with the mounting cavity and the first air outlet hole, and the first connecting piece is mounted in the mounting cavity; the space between the outer wall of the first connecting piece and the inner wall of the mounting cavity and the space inside the first air outlet jointly form a second exhaust channel, the exhaust sleeve exhausts air through the first exhaust channel and the second exhaust channel, and the exhaust effect is improved due to the fact that the exhaust channels are increased.

Description

Technical Field

[0001] This invention relates to the field of mold manufacturing, and more particularly to a venting sleeve for alloy casting molds. Background Technology

[0002] To facilitate the expulsion of gas from the cavity, existing alloy casting molds typically have venting sleeves. However, the number of venting channels in these sleeves is currently small, resulting in poor venting performance. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a venting sleeve for alloy casting molds.

[0004] The technical solution of the present invention is as follows: it includes a fixed base and a first connecting member. The fixed base is installed in the vent hole. A first vent channel is formed between the outer wall of the fixed base and the inner wall of the vent hole. The upper and lower ends of the first vent channel are respectively connected to the outer surface above the fixed base and the outer surface below the fixed base. The bottom of the fixed base has a mounting cavity with a downward opening. The fixed base has a first vent hole located above the mounting cavity. The upper and lower ends of the first vent hole are respectively connected to the outer surface above the fixed base and the mounting cavity. The first connecting member is installed in the mounting cavity. There is a distance between the outer wall of the first connecting member and the inner wall of the mounting cavity.

[0005] Furthermore, the vent hole includes a first section and a second section located below the first section, wherein the inner diameter of the first section is larger than the inner diameter of the second section; The fixing base includes a first cylinder and a second cylinder connected to the lower end of the first cylinder. The outer diameter of the first cylinder is larger than the outer diameter of the second cylinder. The first cylinder is placed in the first hole section, and the second cylinder is placed in the second hole section.

[0006] Furthermore, the bottom of the first cylinder has a notch with a downward opening, the notch being located on the outside of the second cylinder, and the cavity between the outer wall of the first cylinder and the inner wall of the first hole segment is connected to the cavity between the outer wall of the second cylinder and the inner wall of the second hole segment through the notch.

[0007] Furthermore, the second cylinder includes a first cylindrical segment and a second cylindrical segment located below the first cylindrical segment. The outer diameter of the first cylindrical segment is smaller than the outer diameter of the second cylindrical segment. The outer wall of the second cylindrical segment is close to the inner wall of the second hole segment. The outer side of the second cylindrical segment has a plurality of grooves spaced apart along the circumferential direction of the second cylindrical segment, and the grooves extend in the vertical direction.

[0008] Furthermore, the first connector is fixed to the mounting base by screws.

[0009] Furthermore, the top of the fixing seat has a countersunk hole, the screw is placed in the countersunk hole, and the threaded section of the screw passes through the fixing seat and is threadedly connected to the first connector.

[0010] Furthermore, the first vent is connected to the countersunk hole.

[0011] Furthermore, a plurality of second connectors are provided between the inner wall of the mounting cavity and the outer wall of the first connector, and the plurality of second connectors are sequentially sleeved on the outside of the first connector. The top of the second connector has a second vent hole, which communicates with the interior and the exterior of the second connector respectively. The screws on the mounting base pass through several second connectors and are connected to the first connector.

[0012] Furthermore, the second connector includes a third cylindrical segment, a fourth cylindrical segment located below the third cylindrical segment, and an annular segment located between the third cylindrical segment and the fourth cylindrical segment. The outer wall of the third cylindrical segment includes a vertical segment, and the position of the vertical segment is on the same side of the third cylindrical segment as the position of the second air outlet.

[0013] Furthermore, the second connector also includes a fifth cylindrical segment, the lower end of which is connected to the upper end of the third cylindrical segment, and the outer diameter of the fifth cylindrical segment is smaller than the outer diameter of the third cylindrical segment.

[0014] The venting sleeve for alloy casting molds according to the present invention has at least the following technical advantages: 1. By installing a fixing seat in the exhaust hole, a first exhaust channel is formed between the outer wall of the fixing seat and the inner wall of the exhaust hole. At the same time, the fixing seat is provided with an installation cavity and a first air outlet. The first connector is installed in the installation cavity. The space between the outer wall of the first connector and the inner wall of the installation cavity, as well as the space inside the first air outlet, together constitute a second exhaust channel. In other words, the exhaust sleeve exhausts air through the first and second exhaust channels. Due to the increase in exhaust channels, the exhaust effect is improved.

[0015] 2. By setting up several second connecting parts, multiple air inlets are added, thereby increasing the exhaust speed.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the technical solutions taken in conjunction with the following drawings, wherein: Figure 1 A schematic diagram of the exhaust sleeve mounted on an alloy casting mold; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the exhaust sleeve in the first embodiment; Figure 4 This is a schematic diagram of the structure of the fixed base; Figure 5 This is a top view of the fixed base. Figure 6 This is a schematic diagram of the exhaust sleeve in the second embodiment; Figure 7 This is a schematic diagram of the exhaust sleeve in the first embodiment; Figure 8 This is a schematic diagram of the second connector.

[0018] Reference numerals: Upper mold 100, vent hole 110, first hole segment 111, second hole segment 112, fixing base 200, first vent channel 210, mounting cavity 220, first air outlet 230, first cylinder 240, notch 241, second cylinder 250, first cylindrical segment 251, second cylindrical segment 252, groove 2521, countersunk hole 260, first connector 300, screw 400, second connector 500, second air outlet 510, third cylindrical segment 520, vertical segment 521, fourth cylindrical segment 530, annular segment 540, fifth cylindrical segment 550, lower mold 600, cavity 610. Detailed Implementation

[0019] The technical solutions of the present invention are described in detail below. Examples of these technical solutions are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The technical solutions described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 , 2 As shown, the venting sleeve provided in the embodiment of the present invention includes a fixing base 200 and a first connecting member 300. The venting sleeve is used on an alloy casting mold. The alloy casting mold includes an upper mold 100, which has a venting hole 110 extending through the upper mold 100 in a vertical direction. The fixing base 200 is installed in the venting hole 110. A first venting channel 210 is provided between the outer wall of the fixing base 200 and the inner wall of the venting hole 110. The upper and lower ends of the first venting channel 210 are respectively connected to the outer surface above the fixing base 200 and the outer surface below the fixing base 200. Figure 2 , 3 As shown, the bottom of the fixing base 200 has a mounting cavity 220 with a downward opening. The fixing base 200 has a first vent 230 located above the mounting cavity 220. The upper and lower ends of the first vent 230 are respectively connected to the outside of the fixing base 200 and the mounting cavity 220. The first connector 300 is installed in the mounting cavity 220, and there is a distance between the outer wall of the first connector 300 and the inner wall of the mounting cavity 220.

[0024] By installing a fixing base 200 inside the exhaust hole 110, a first exhaust channel 210 is formed between the outer wall of the fixing base 200 and the inner wall of the exhaust hole 110. At the same time, the fixing base 200 is provided with an installation cavity 220 and a first vent hole 230. The first connector 300 is installed in the installation cavity 220. The space between the outer wall of the first connector 300 and the inner wall of the installation cavity 220 and the space inside the first vent hole 230 together constitute a second exhaust channel. That is to say, the exhaust sleeve exhausts air through the first and second exhaust channels. Due to the increase in exhaust channels, the exhaust effect is improved.

[0025] Specifically, such as Figure 1As shown, the alloy casting mold also includes a lower mold 600, an upper mold 100 and a cavity 610 between the lower mold 600, and an upper mold 100 is provided with vent holes 110 at positions corresponding to the cavity 610, which are respectively connected to the cavity 610 and the outside of the upper mold 100. A fixing seat 200 is fixedly connected to the vent holes 110. The fixing connection method can be that the fixing seat 200 is welded to the vent holes 110 or fixed to the vent holes 110 by other means. During operation, molten metal is injected into the cavity 610 from the bottom of the mold. Part of the gas in the cavity 610 passes through the upper mold 100 and is discharged to the outside of the upper mold 100 through the first exhaust channel 210 formed between the outer wall of the fixed seat 200 and the inner wall of the exhaust hole 110. Another part of the gas enters the space between the outer wall of the first connector 300 and the inner wall of the mounting cavity 220, and is then discharged to the outside of the upper mold 100 through the first vent hole 230.

[0026] Furthermore, such as Figure 2 As shown, the vent 110 includes a first section 111 and a second section 112 located below the first section 111, wherein the inner diameter of the first section 111 is larger than the inner diameter of the second section 112. The fixing base 200 includes a first cylinder 240 and a second cylinder 250 connected to the lower end of the first cylinder 240. The outer diameter of the first cylinder 240 is larger than the outer diameter of the second cylinder 250. The first cylinder 240 is placed in the first hole section 111, and the second cylinder 250 is placed in the second hole section 112.

[0027] The fixed base 200 has a T-shaped cross-section, which allows the fixed base 200 to be snapped onto the exhaust hole 110 by the first cylinder 240, and facilitates the formation of cavities between the outer wall of the first cylinder 240 and the inner wall of the first hole section 111, and between the outer wall of the second cylinder 250 and the inner wall of the second hole section 112, so as to facilitate the formation of the first exhaust channel 210.

[0028] Furthermore, such as Figure 1 , 4 As shown, the bottom of the first cylinder 240 has a notch 241 with a downward opening, and the notch 241 is located on the outside of the second cylinder 250, as... Figure 1 As shown, the cavity between the outer wall of the first cylinder 240 and the inner wall of the first hole segment 111 is connected to the cavity between the outer wall of the second cylinder 250 and the inner wall of the second hole segment 112 through the notch 241.

[0029] That is, the first exhaust channel 210 includes the cavity between the outer wall of the first cylinder 240 and the inner wall of the first hole segment 111, the space inside the notch 241, and the cavity between the outer wall of the second cylinder 250 and the inner wall of the second hole segment 112.

[0030] During operation, the gas first enters the cavity between the outer wall of the second cylinder 250 and the inner wall of the second hole section 112, then enters the cavity between the outer wall of the first cylinder 240 and the inner wall of the first hole section 111 through the notch 241, and is then discharged to the outside above the fixed seat 200.

[0031] Furthermore, such as Figure 1 , 4 As shown, the second cylinder 250 includes a first cylindrical segment 251 and a second cylindrical segment 252 located below the first cylindrical segment 251. The outer diameter of the first cylindrical segment 251 is smaller than the outer diameter of the second cylindrical segment 252. The outer wall of the second cylindrical segment 252 is close to the inner wall of the second hole segment 112. The outer side of the second cylindrical segment 252 has a plurality of grooves 2521 spaced along the circumferential direction of the second cylindrical segment 252. The grooves 2521 extend in the vertical direction.

[0032] Because the outer wall of the second cylindrical section 252 is close to the inner wall of the second hole section 112 and is provided with multiple grooves 2521, the gas moves upward only through the multiple grooves 2521; because the outer diameter of the first cylindrical section 251 is smaller than the outer diameter of the second cylindrical section 252, the space between the first cylindrical section 251 and the second hole section 112 is increased, making the gas flow smoother and accelerating the gas output.

[0033] Specifically, groove 2521 is a circular groove with a depth of 0.5mm and a radius of R3. This size allows air to pass through but blocks molten aluminum.

[0034] Furthermore, such as Figure 3 As shown, the first connector 300 is fixed to the mounting base 200 by screws 400. The first connector 300 is fixed by screws 400 to facilitate the installation and removal of the first connector 300.

[0035] Specifically, the screw 400 is an internal hex socket screw, which makes it easy to disassemble the parts, clean the debris remaining on the exhaust surface, restore the exhaust capacity, and greatly improve the ease of operation.

[0036] Furthermore, such as Figure 2 , 5 As shown, the top of the fixing base 200 has a countersunk hole 260, and the screw 400 is placed in the countersunk hole 260. The threaded section of the screw 400 passes through the fixing base 200 and is threadedly connected to the first connector 300.

[0037] By providing a countersunk hole 260, the screw 400 is concealed within the mounting base 200, preventing the screw 400 from protruding.

[0038] Furthermore, such as Figure 5 As shown, the first vent 230 is connected to the countersunk hole 260.

[0039] The first vent 230 is connected to the countersunk hole 260, which expands the gas emission path within the first vent 230. Specifically, the gas can be emitted not only through the channel of the first vent 230 itself, but also through the channel of the countersunk hole 260, thereby effectively accelerating the gas emission speed.

[0040] Furthermore, such as Figure 6 , 7 As shown, a plurality of second connectors 500 are provided between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300. These second connectors 500 are sequentially fitted over the first connector 300, as shown below. Figure 8 As shown, the top of the second connector 500 has a second vent 510, which communicates with the interior of the second connector 500 and the exterior of the second connector 500, respectively. like Figure 6 , 7 As shown, the screws 400 on the mounting base 200 pass through several second connectors 500 and are connected to the first connector 300.

[0041] By providing several second connectors 500, multiple air inlets α are added, thereby increasing the exhaust speed.

[0042] like Figure 2 As shown, when no second connector 500 is provided between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300, gas enters from the gap between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300, that is, there is only one air inlet α. like Figure 6 As shown, when a second connector 500 is provided between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300, the second connector 500 is located between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300. The second connector 500 is sleeved on the outside of the first connector 300. Part of the gas enters from the gap between the outer wall of the second connector 500 and the inner wall of the mounting cavity 220 and is discharged to the outside of the fixing seat 200 through the first air outlet 230. Another part of the gas enters from the gap between the inner wall of the second connector 500 and the outer wall of the first connector 300, moves upward along the gap, and is discharged into the mounting cavity 220 through the second air outlet 510, and is discharged to the outside of the fixing seat 200 through the first air outlet 230. That is, there are two air inlets α.

[0043] Specifically, the gap between the outer wall of the second connector 500 and the inner wall of the mounting cavity 220 is 0.1-0.12mm, which allows air to pass through while blocking the passage of molten aluminum; the gap between the inner wall of the second connector 500 and the outer wall of the first connector 300 is also 0.1-0.12mm, which allows air to pass through while blocking the passage of molten aluminum.

[0044] like Figure 7 As shown, when two second connectors 500 are disposed between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300, the two second connectors 500 are located between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300. The two second connectors 500 are sequentially sleeved on the outside of the first connector 300. A portion of the gas enters from the gap B between the outer wall of the outermost second connector 500 and the inner wall of the mounting cavity 220 and is discharged to the outside of the fixing seat 200 through the first vent hole 230. Another portion of the gas enters from the gap C between the two connectors and is discharged to the outside of the fixing seat 200 through the first vent hole 230. The second air outlet 510 on the second connector 500 on the side enters into the mounting cavity 220, and then exits to the outside of the fixing seat 200 through the first air outlet 230. Another part of the gas enters from the gap D between the inner wall of the innermost second connector 500 and the outer wall of the first connector 300 and exits from the second air outlet 510 on the innermost second connector 500. Then, it enters into the mounting cavity 220 through the second air outlet 510 on the outermost second connector 500 and exits to the outside of the fixing seat 200 through the first air outlet 230. That is, there are three air inlets α.

[0045] Understandably, the second connector 500 can also be set to three, four or more, so the number of the second connector 500 can be designed according to actual needs. It is understandable that several second connectors 500 are nested between the inner wall of the mounting cavity 220 and the outer wall of the first connector 300. There is a gap between the outermost second connector 500 and the inner wall of the mounting cavity 220 to facilitate gas flow. There is also a gap between two adjacent second connectors 500 to facilitate gas flow. There is also a gap between the innermost second connector 500 and the first connector 300 to facilitate gas flow.

[0046] Furthermore, such as Figure 8 As shown, the second connector 500 includes a third cylindrical section 520, a fourth cylindrical section 530 located below the third cylindrical section 520, and an annular section 540 located between the third cylindrical section 520 and the fourth cylindrical section 530. The outer wall of the third cylindrical section 520 includes a vertical section 521, and the position of the vertical section 521 is on the same side of the third cylindrical section 520 as the position of the second air outlet 510.

[0047] By setting the annular section 540 and the vertical section 521, the gap between two adjacent second connectors 500 and the gap between the outermost second connector 500 and the inner wall of the mounting cavity 220 present a specific shape, that is, the gap at the bottom is narrower and the gap at the top is wider. This design can increase the gas flow space and facilitate gas discharge.

[0048] Specifically, multiple vertical sections 521 are provided, spaced apart along the circumference. The outer diameter of the fourth cylindrical section 530 is smaller than the diameter of the arc surface of the third cylindrical section 520. There is a gap between the outer wall of the fourth cylindrical section 530 and the inner wall of the mounting cavity 220, which allows air to pass through but blocks the passage of molten aluminum. The arc surface of the third cylindrical section 520 is concentric with the inner wall of the mounting cavity 220 and has an interference fit. When multiple vertical sections 521 are provided, the above design ensures that the gap between each vertical section 521 and the inner wall of the mounting cavity 220 is consistent, thus ensuring the exhaust effect. Further, as... Figure 8 As shown, the second connector 500 also includes a fifth cylindrical segment 550, the lower end of which is connected to the upper end of the third cylindrical segment 520, and the outer diameter of the fifth cylindrical segment 550 is smaller than the outer diameter of the third cylindrical segment 520.

[0049] By providing a fifth cylindrical section 550 with a diameter smaller than that of the third cylindrical section 520, the gas flow space is increased, facilitating gas discharge.

[0050] Although the technical solutions of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these technical solutions without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A venting sleeve for an alloy casting mold, the alloy casting mold comprising an upper mold having a venting hole penetrating the upper mold in a vertical direction, characterized in that, include: A fixing base is installed inside the vent hole. A first vent channel is provided between the outer wall of the fixing base and the inner wall of the vent hole. The upper and lower ends of the first vent channel are respectively connected to the outer surface above the fixing base and the outer surface below the fixing base. The bottom of the fixing base has a mounting cavity with a lower opening. The fixing base has a first vent hole located above the mounting cavity. The upper and lower ends of the first vent hole are respectively connected to the outer surface above the fixing base and the mounting cavity. A first connector is installed inside the mounting cavity, and there is a distance between the outer wall of the first connector and the inner wall of the mounting cavity.

2. The venting sleeve for alloy casting molds according to claim 1, characterized in that: The vent hole includes a first section and a second section located below the first section, wherein the inner diameter of the first section is larger than the inner diameter of the second section; The fixing base includes a first cylinder and a second cylinder connected to the lower end of the first cylinder. The outer diameter of the first cylinder is larger than the outer diameter of the second cylinder. The first cylinder is placed in the first hole section, and the second cylinder is placed in the second hole section.

3. The venting sleeve for alloy casting molds according to claim 2, characterized in that: The bottom of the first cylinder has a notch with a downward opening, the notch being located on the outside of the second cylinder, and the cavity between the outer wall of the first cylinder and the inner wall of the first hole segment is connected to the cavity between the outer wall of the second cylinder and the inner wall of the second hole segment through the notch.

4. The venting sleeve for alloy casting molds according to claim 3, characterized in that: The second cylinder includes a first cylindrical segment and a second cylindrical segment located below the first cylindrical segment. The outer diameter of the first cylindrical segment is smaller than the outer diameter of the second cylindrical segment. The outer wall of the second cylindrical segment is close to the inner wall of the second hole segment. The outer side of the second cylindrical segment has a plurality of grooves spaced apart along the circumference of the second cylindrical segment, and the grooves extend in the vertical direction.

5. The venting sleeve for alloy casting molds according to any one of claims 1 to 4, characterized in that: The first connector is fixed to the mounting base by screws.

6. The venting sleeve for alloy casting molds according to claim 5, characterized in that: The top of the fixing seat has a countersunk hole, the screw is placed in the countersunk hole, and the threaded section of the screw passes through the fixing seat and is threadedly connected to the first connector.

7. The venting sleeve for alloy casting molds according to claim 6, characterized in that: The first vent is connected to the countersunk hole.

8. The venting sleeve for alloy casting molds according to claim 5, characterized in that: A plurality of second connectors are provided between the inner wall of the mounting cavity and the outer wall of the first connector. The plurality of second connectors are sequentially sleeved on the outside of the first connector. The top of the second connector has a second vent hole, which communicates with the inside of the second connector and the outside of the second connector respectively. The screws on the mounting base pass through several second connectors and are connected to the first connector.

9. The venting sleeve for alloy casting molds according to claim 8, characterized in that: The second connector includes a third cylindrical segment, a fourth cylindrical segment located below the third cylindrical segment, and an annular segment located between the third cylindrical segment and the fourth cylindrical segment. The outer wall of the third cylindrical segment includes a vertical segment, and the position of the vertical segment and the position of the second air outlet are located on the same side of the third cylindrical segment.

10. The venting sleeve for alloy casting molds according to claim 9, characterized in that: The second connector further includes a fifth cylindrical segment, the lower end of which is connected to the upper end of the third cylindrical segment, and the outer diameter of the fifth cylindrical segment is smaller than the outer diameter of the third cylindrical segment.

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