阅读说明：本技术 离心铸造浇道 (Centrifugal casting pouring channel ) 是由 周国荣 于 2019-12-10 设计创作，主要内容包括：本发明属于汽车零部件铸造加工技术领域,具体涉及一种离心铸造浇道,包括碗状接料槽以及与碗状接料槽相接的固定流道,所述固定流道上套设有一回转体,所述回转体沿平行于固定流道长度方向的转轴转动设置,所述回转体上开设有活动流道,所述活动流道自回转体的内环面贯穿至回转体的外环面,所述活动流道成螺旋状布置。本发明的活动流道能够使浇铸液在模具内的落点沿模具轴向线性变化,确保浇铸液快速分布均匀,缩短铸造时间,同时避免浇铸液局部堆积影响铸件质量。(The invention belongs to the technical field of automobile part casting and processing, and particularly relates to a centrifugal casting runner which comprises a bowl-shaped receiving groove and a fixed flow channel connected with the bowl-shaped receiving groove, wherein a revolving body is sleeved on the fixed flow channel and is arranged in a rotating mode along a rotating shaft parallel to the length direction of the fixed flow channel, a movable flow channel is formed in the revolving body and penetrates from the inner ring surface of the revolving body to the outer ring surface of the revolving body, and the movable flow channel is spirally arranged. The movable flow passage can ensure that the falling point of the casting liquid in the mold linearly changes along the axial direction of the mold, ensure the rapid and uniform distribution of the casting liquid, shorten the casting time and simultaneously avoid the influence on the casting quality caused by the local accumulation of the casting liquid.)

1. A centrifugal casting runner, characterized in that: the spiral flow channel structure comprises a bowl-shaped receiving groove and a fixed flow channel connected with the bowl-shaped receiving groove, wherein a revolving body is sleeved on the fixed flow channel and is arranged in a rotating mode along a rotating shaft parallel to the length direction of the fixed flow channel, a movable flow channel is formed in the revolving body and penetrates from the inner ring surface of the revolving body to the outer ring surface of the revolving body, and the movable flow channel is spirally arranged.

2. The centrifugal casting runner of claim 1, wherein: the movable flow channel is a double-spiral structure symmetrically extending from the middle part of the revolving body to two ends of the revolving body respectively; the end part of the fixed flow channel is correspondingly arranged at the intersection of the double helix.

3. The centrifugal casting runner of claim 2, wherein: the diameter of the inner ring surface of the revolving body is gradually increased from the intersection of the double spirals to the two ends of the revolving body.

4. The centrifugal casting runner of claim 3, wherein: the bowl-shaped material receiving groove, the fixed runner and the revolving body are all made of high-temperature-resistant ceramics.

5. The centrifugal casting runner of claim 4, wherein: the centrifugal casting pouring gate is arranged on a sliding seat, and the sliding seat is arranged on a sliding rail which is parallel to the axis of the revolving body in a sliding mode.

6. The centrifugal casting runner of claim 5, wherein: the slide rail is an electric slide rail.

7. The centrifugal casting runner of claim 6, wherein: the rotary driving motor is arranged on the sliding seat, and the rotary body is arranged on a bearing seat arranged on the sliding seat through a bearing.

8. The centrifugal casting runner of claim 7, wherein: the outer ring surface of the revolving body is provided with a driven gear, a main shaft of the revolving driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear.

9. A centrifugal casting system, characterized by: the pouring gate is arranged on the outer side of a pouring gate of the horizontal centrifugal casting machine; the runner comprises a bowl-shaped receiving groove and a fixed flow channel connected with the bowl-shaped receiving groove, a rotary body is sleeved on the fixed flow channel and rotatably arranged along a rotating shaft parallel to the length direction of the fixed flow channel, a movable flow channel is formed in the rotary body and penetrates through the inner annular surface of the rotary body to the outer annular surface of the rotary body, and the movable flow channel is spirally arranged.

10. The centrifugal casting system of claim 9, wherein: the movable flow channel is a double-spiral structure symmetrically extending from the middle part of the revolving body to two ends of the revolving body respectively; the end part of the fixed flow channel is correspondingly arranged at the intersection of the double helix.

Technical Field

The invention belongs to the technical field of automobile part casting and processing, and particularly relates to a centrifugal casting runner.

Background

The engine cylinder liner is generally manufactured by adopting a centrifugal casting process, centrifugal casting equipment in the prior art is generally a fixed pouring channel, namely, casting liquid flows into a mold from a fixed position, so that the casting liquid in the mold is unevenly distributed, the molding period is prolonged, and the cylinder liner easily generates local internal stress to influence the molding quality of the cylinder liner.

Disclosure of Invention

The invention aims to provide a centrifugal casting pouring gate capable of quickly and uniformly distributing casting liquid.

The technical scheme adopted by the invention is as follows:

a centrifugal casting runner comprises a bowl-shaped receiving groove and a fixed flow channel connected with the bowl-shaped receiving groove, wherein a revolving body is sleeved on the fixed flow channel and rotatably arranged along a rotating shaft parallel to the length direction of the fixed flow channel, a movable flow channel is formed in the revolving body and penetrates from the inner ring surface of the revolving body to the outer ring surface of the revolving body, and the movable flow channel is spirally arranged.

The movable flow channel is a double-spiral structure symmetrically extending from the middle part of the revolving body to two ends of the revolving body respectively; the end part of the fixed flow channel is correspondingly arranged at the intersection of the double helix.

The diameter of the inner ring surface of the revolving body is gradually increased from the intersection of the double spirals to the two ends of the revolving body.

The bowl-shaped material receiving groove, the fixed runner and the revolving body are all made of high-temperature-resistant ceramics.

The centrifugal casting pouring gate is arranged on a sliding seat, and the sliding seat is arranged on a sliding rail which is parallel to the axis of the revolving body in a sliding mode.

The slide rail is an electric slide rail.

The rotary driving motor is arranged on the sliding seat, and the rotary body is arranged on a bearing seat arranged on the sliding seat through a bearing.

The outer ring surface of the revolving body is provided with a driven gear, a main shaft of the revolving driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear.

A centrifugal casting system comprises a pouring channel and a horizontal centrifugal casting machine, wherein the pouring channel is arranged on the outer side of a casting opening of the horizontal centrifugal casting machine; the runner comprises a bowl-shaped receiving groove and a fixed flow channel connected with the bowl-shaped receiving groove, a rotary body is sleeved on the fixed flow channel and rotatably arranged along a rotating shaft parallel to the length direction of the fixed flow channel, a movable flow channel is formed in the rotary body and penetrates through the inner annular surface of the rotary body to the outer annular surface of the rotary body, and the movable flow channel is spirally arranged.

The movable flow channel is a double-spiral structure symmetrically extending from the middle part of the revolving body to two ends of the revolving body respectively; the end part of the fixed flow channel is correspondingly arranged at the intersection of the double helix.

The invention has the technical effects that: the movable flow passage can ensure that the falling point of the casting liquid in the mold linearly changes along the axial direction of the mold, ensure the rapid and uniform distribution of the casting liquid, shorten the casting time and simultaneously avoid the influence on the casting quality caused by the local accumulation of the casting liquid.

Drawings

FIG. 1 is a perspective view of a centrifugal casting system provided by an embodiment of the present invention;

FIG. 2 is a side view of a centrifugal casting system provided by an embodiment of the present invention;

FIG. 3 is a top view of a centrifugal casting system provided by an embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a perspective view of a demolding device provided in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view showing the internal structure of the ejector according to the embodiment of the present invention;

FIG. 7 is a perspective view of a casting unit provided by an embodiment of the present invention;

fig. 8 is a cross-sectional view of a drive assembly provided by an embodiment of the present invention.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

As shown in fig. 1-4, a cylinder liner centrifugal casting system comprises a casting unit and a centrifugal unit, wherein the centrifugal unit comprises a cylindrical mold body 10 which is rotatably arranged along a horizontal axis, a first end plate 11 is arranged at a first end of the cylindrical mold body 10, a second end plate 12 is arranged at a second end of the cylindrical mold body 10, a casting channel is arranged at the center of the second end plate 12, the casting unit is positioned outside the casting channel, the casting unit is used for guiding casting liquid into the cylindrical mold body 10, and the casting unit is movably arranged along the axial direction of the cylindrical mold body 10; the centrifugal unit comprises a demolding device, the demolding device is used for ejecting the formed cylinder sleeve 1 out of the cylindrical mold body 10, a cylinder sleeve guiding device 50 is further arranged below the outer side of the casting channel, and the cylinder sleeve guiding device 50 is used for guiding and collecting the ejected cylinder sleeve 1. According to the centrifugal casting system for the cylinder sleeve 1, the first end plate 11 and the second end plate 12 are arranged to be movable, after the cylinder sleeve 1 is formed, the cylinder sleeve 1 is ejected out of a mold by the first end plate 11, so that automatic demolding of a casting is realized, and the casting processing efficiency of the cylinder sleeve 1 is improved.

Preferably, the cylinder jacket guiding device 50 includes at least two guide rods arranged in parallel, the length direction of the guide rods is perpendicular to the axial direction of the cylindrical mold body 10, and two ends of the guide rods are arranged in an up-and-down inclined manner. The cylinder sleeve 1 is directly dropped on the guide rod after being ejected by the first end plate 11, and the cylinder sleeve 1 rolls along the guide rod to a collecting station.

Preferably, the first end of the cylindrical mold body 10 is connected to a main shaft of a mold rotation driving motor 60 through a rotating shaft and a coupling 61, and is used for driving the cylindrical mold body 10 to rotate.

Further, as shown in fig. 6, the first end plate 11 and the second end plate 12 are both ring-shaped structures, and the first end plate 11 and the second end plate 12 form a sliding fit with the cylindrical die body 10 along the axial direction of the cylindrical die body 10; the demolding device comprises a claw 14 which is arranged in a center hole of the first end plate 11, can be opened and closed along the radial direction of the cylindrical mold body 10 and can move along the axial direction of the cylindrical mold body 10, and a driving assembly which is arranged beside the cylindrical mold body 10 and is used for driving the first end plate 11, the second end plate 12 and the claw 14 to move. The jack catch 14 can support the inner wall of the cylinder sleeve 1 after the cylinder sleeve 1 is molded, so that the inner coating of the mold is prevented from being damaged due to friction between the outer wall of the cylinder sleeve 1 and the bottom surface of the inner wall of the cylindrical mold body 10 during demolding, and the demolding resistance is reduced.

Specifically, as shown in fig. 4, 5, 6, and 8, the driving assembly includes a driving disc 20, the driving disc 20 is slidably disposed along an axial direction of the cylindrical mold body 10, the jaw 14 is in a long strip shape, a strip-shaped hole 141 is disposed on the jaw 14, the jaw 14 is slidably pivoted to a hinge support 18 disposed on the first end plate 11 through the strip-shaped hole 141, one end of the jaw 14 is hinged to a first guide pillar 15, the first guide pillar 15 is fixedly connected to the driving disc 20, and a hinge axis between the jaw 14 and the first guide pillar 15 is closer to an axial center of the cylindrical mold body 10 than the hinge support 18; when the first guide post 15 slides towards the second end of the cylindrical die body 10 relative to the first end plate 11, the included angle between the claw 14 and the axis of the cylindrical die body 10 gradually increases, and when the first guide post 15 slides towards the first end of the cylindrical die body 10 relative to the first end plate 11, the included angle between the claw 14 and the cylindrical die body 10 gradually decreases. The principle of the driving assembly is as follows: referring to fig. 4, before demolding starts, the jaws 14 are contracted to the right side of the first end plate 11, when the driving disc 20 starts to move left, the driving disc 20 firstly pushes the jaws 14 to move left, the jaws 14 are limited by the hinged support 18, the left ends of the jaws move left and approach to the inner wall of the cylinder sleeve 1, when the jaws 14 abut against the inner wall of the cylinder sleeve 1, the jaws 14 are locked relative to the first end plate 11, the jaws 14 start to drive the first end plate 11 to move left synchronously with the continuous left movement of the driving disc 20, the first end plate 11 pushes the cylinder sleeve 1 to move left, and at the moment, the cylinder sleeve 1 is clamped by the jaws 14, so that the horizontal posture is kept to be ejected to the outer side of the mold, and the cylinder sleeve 1 ejects the second end plate 12; after the cylinder sleeve 1 completely breaks away from the die, the driving disc 20 starts to move to the right, at this time, the driving disc 20 firstly drives the jaws 14 to move to the right, so that the jaws 14 are contracted to the right of the first end plate 11 again, at this time, the cylinder sleeve 1 loses the support of the jaws 14 and then drops downwards, along with the continuous right movement of the driving disc 20, the jaws 14 pull the first end plate 11 to move to the right through the hinged support 18, and finally, the first end plate 11 and the jaws 14 return to the initial station.

Furthermore, an annular groove is formed in the outer annular surface of the driving disc 20, two idler wheels 22 are symmetrically arranged in the annular groove, the axis of each idler wheel 22 is perpendicular to the axis of the driving disc 20, each idler wheel 22 is rotatably arranged on a shifting fork 21, the driving assembly further comprises an electric cylinder 40 which is arranged in the direction parallel to the axis of the cylindrical die body 10, and each shifting fork 21 is fixedly connected with a sliding block of each electric cylinder 40; the shifting fork 21 is connected with the driving disc 20 through the roller 22, and the driving disc 20 is driven to move axially while the driving disc 20 is ensured to rotate synchronously with the cylindrical die body 10.

Preferably, the first end plate 11 forms a sliding fit with a first cover plate 19 fixedly arranged at the first end of the cylindrical die body 10 through a second guide post 16; a second cover plate 13 is arranged on the outer side of the second end plate 12, a heat insulation pad 131 is arranged between the second cover plate 13 and the second end plate 12, and the second cover plate 13 is in sliding fit with the cylindrical die body 10 through a third guide pillar 17; the driving assembly further comprises a gear lever 41 arranged on the outer side of the second cover plate 13, the gear lever 41 is fixedly connected with a sliding block of the electric cylinder 40, and the gear lever 41 is in gear connection with the outer side of the second cover plate 13. The stop lever 41 can synchronously drive the second end plate 12 to reset when the driving disc 20 resets, and can limit the position of the second end plate 12 in the rotating process of the mold, and in practical use, a sliding ring or a ball bearing is arranged on one side of the stop lever 41, which is attached to the second cover plate 13, so as to reduce the friction between the stop lever 41 and the second cover plate 13.

Preferably, the number of the jaws 14 is 3 at regular intervals along the circumference of the cylindrical die body 10.

Further, as shown in fig. 4 and 7, the casting unit includes a bowl-shaped receiving groove 31 and a fixed flow channel 32 connected to the bowl-shaped receiving groove 31, a revolving body 30 is sleeved on the fixed flow channel 32, the revolving body 30 is rotatably disposed along a rotating shaft parallel to the length direction of the fixed flow channel 32, a movable flow channel 301 is disposed on the revolving body 30, the movable flow channel 301 penetrates from the inner annular surface of the revolving body 30 to the outer annular surface of the revolving body 30, and the movable flow channel 301 is spirally disposed. Specifically, the movable flow channel 301 is a double-spiral structure extending symmetrically from the middle of the revolving body 30 to two ends of the revolving body 30; the end part of the fixed flow passage 32 is correspondingly arranged at the intersection of the double helix; the diameter of the inner ring surface of the revolving body 30 gradually increases from the intersection of the double spiral to the two ends of the revolving body 30; the bowl-shaped material receiving groove 31, the fixed runner 32 and the revolving body 30 are all made of high-temperature-resistant ceramics. The movable runner 301 can enable the falling point of the casting liquid in the mold to change linearly along the axial direction of the mold, ensure the casting liquid to be distributed uniformly and quickly, shorten the casting time and simultaneously avoid the influence on the casting quality caused by the local accumulation of the casting liquid.

Further, the centrifugal casting runner is installed on a sliding seat 33, the sliding seat 33 is slidably arranged on a sliding rail 34 arranged parallel to the axis of the revolving body 30, and the sliding rail 34 is an electric sliding rail 34; a rotary driving motor 37 is arranged on the sliding seat 33, and the rotary body 30 is arranged on a bearing seat arranged on the sliding seat 33 through a bearing; a driven gear 35 is provided on an outer circumferential surface of the rotation body 30, a driving gear 36 is provided on a main shaft of the rotation driving motor 37, and the driving gear 36 and the driven gear 35 are engaged with each other.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.