CN110918894A - Gate bar - Google Patents
Gate bar Download PDFInfo
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- CN110918894A CN110918894A CN201911242089.1A CN201911242089A CN110918894A CN 110918894 A CN110918894 A CN 110918894A CN 201911242089 A CN201911242089 A CN 201911242089A CN 110918894 A CN110918894 A CN 110918894A
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- Prior art keywords
- runner
- tree
- sprue
- exhaust pipe
- box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a gate stick, which comprises a gate cup, a main runner, a secondary runner, a first exhaust pipe and a tree combining box packaging structure, wherein the bottom of the gate cup is communicated with the main runner, the main runner extends from a side wall to two sides to form the secondary runner, the length direction of the secondary runner is vertical to that of the main runner, tree combining cavities are arranged in an array along the length direction of the secondary runner and are communicated with the secondary runner, and the tree combining cavities are communicated with the gate cup through the first exhaust pipe. The invention has simple structure, reduces the defect rate of the air holes of the casting by arranging the exhaust pipe structure, and has good market application prospect.
Description
Technical Field
The invention relates to the technical field of precision casting equipment, in particular to a gate stick.
Background
In the technical field of precision casting, a product needs to use a gate rod in production, the conventional gate rod is a straight gate rod, molten metal is directly poured into the bottom of the gate rod from a gate cup, steady flow and entrainment are easily caused, the proportion of a slag hole and an air hole is increased, meanwhile, the impact force received by the bottom of the gate rod is large, the surface layer at the bottom of the gate rod is easily caused to fall off, and the fallen surface layer enters a casting along with molten steel to increase the proportion of a sand hole.
The existing scheme for improving the slag pores mainly comprises the steps of adding slag blocking cotton and a filter screen or adopting a multi-time slagging technology, but the reduction of the rejection rate is little.
Disclosure of Invention
In view of the above, the present invention provides a gate pin capable of reducing a slag gas hole of a casting to some extent.
The technical scheme of the invention is realized as follows: the invention provides a gate bar, which comprises a gate cup, a main runner, a secondary runner, a first exhaust pipe and a tree box assembling structure, wherein the bottom of the gate cup is communicated with the main runner, the main runner extends from a side wall to two sides to form the secondary runner, the length direction of the secondary runner is vertical to that of the main runner, the tree box assembling structure is arranged on the secondary runner in an array mode, the tree box assembling structure is communicated with the secondary runner, and the tree box assembling structure is communicated with the gate cup through the first exhaust pipe.
On the basis of the technical scheme, preferably, a plurality of tree group box structures are arranged on the main flow channel along the length direction in an array mode, and the tree group box structures on the main flow channel are communicated with the main flow channel.
The tree grouping box structure is used for providing a welding plane of a single wax piece, the side face of the tree grouping box structure is formed by connecting a plurality of plane structures, and each plane structure forms a tree grouping end face.
On the basis of the technical scheme, preferably, the number of the secondary runners is not less than two, the plurality of secondary runners are arranged in an array mode along the length direction of the main runner, and two adjacent secondary runners are arranged in parallel.
On the basis of the technical scheme, the tree group structure further comprises a second exhaust pipe, and the tree group cavities closest to the two adjacent secondary runners are communicated with each other through the second exhaust pipe.
Still further preferably, a side surface of the tree box assembling structure protrudes from a side surface of the secondary runner, and a surface of the tree box assembling structure close to the pouring cup is communicated with the first exhaust pipe or the second exhaust pipe.
On the basis of the technical scheme, preferably, the pouring cup is funnel-shaped, and the inner wall of the pouring cup is provided with a spiral groove.
On the basis of the technical scheme, the pouring cup is preferred to further comprise a filter screen, and the filter screen is installed at the bottom of the pouring cup.
On the basis of the technical scheme, the pouring cup structure is preferable to further comprise a buffering flow channel, the buffering flow channel is communicated with one end, away from the pouring cup, of the main flow channel, and the end, away from the main flow channel, of the buffering flow channel is closed.
On the basis of the above technical solution, preferably, the cross-sectional area of the buffer flow passage is smaller than the cross-sectional area of the main flow passage.
Compared with the prior art, the gate stick has the following beneficial effects:
(1) the sprue bar is communicated with the tree assembling box structures at different positions by the first exhaust pipe and the second exhaust pipe respectively, so that the sprue bar is communicated with the sprue cup, a gas outlet path is provided for a dewaxed module, the air content in the pouring metal liquid is reduced, and the air hole defect rate of a casting is reduced;
(2) the bottom end of the main runner is provided with the buffer runner, so that a fallen surface layer can be precipitated in the buffer area, the fallen surface layer is prevented from entering parts to form a sand hole defect, the probability of the sand hole is reduced, and the metal casting liquid in the buffer runner forms a buffer structure, so that the turbulence of the casting liquid can be reduced, the turbulence is reduced, and the molten steel or molten iron can be more stably filled into a casting cavity;
(3) set up spiral groove structure in the pouring basin and filter screen cooperation and can prevent that the dross in the pouring molten metal from entering into the sprue from the initial end, the filter screen gives the certain resistance of pouring molten metal, makes its dwell time in pouring basin 1 longer to make more dross stop in spiral groove, reach better deslagging effect, filter screen itself also possesses the deslagging effect, reduces foundry goods slag hole.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a gate pin according to the present invention;
FIG. 2 is an isometric view of a gate pin according to the present invention;
FIG. 3 is a top partial cross-sectional view of a gate pin according to the present invention.
In the figure: 1-a pouring cup, 2-a main runner, 3-a secondary runner, 4-a first exhaust pipe, 5-a tree combining cavity, 6-a filter screen, 7-a buffer runner, 8-a second exhaust pipe and 11-a spiral groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, in conjunction with fig. 2 and 3, the gate stick of the present invention comprises a gate cup 1, a main runner 2, a secondary runner 3, a first exhaust pipe 4 and a tree box assembly structure 5, wherein the bottom of the gate cup 1 is communicated with the main runner 2, the side wall of the main runner 2 extends towards two ends to form the secondary runner 3, preferably, the axis of the secondary runner 3 passes through the axis of the main runner 2, and the axis is perpendicular to the axis of the main runner 2, and the main runner 2 is communicated with the secondary runner 3. The secondary runner 3 is provided with a plurality of tree box assembling structures 5 in an array mode along the axial direction, the tree box assembling structures 5 are communicated with the secondary runner 3, and each tree box assembling structure 5 is communicated with the sprue cup 1 through the first exhaust pipe 4.
In the above embodiment, the pouring liquid enters from the pouring cup 1, flows downwards through the main runner 2 through the filter screen 6, gradually fills the secondary runner 3, flows into the tree combining box assembly structure 5 from the secondary runner 3, and enters into the cavity of the poured product, and the first exhaust pipe 4 exhausts the gas in the product cavity to the pouring cup 1 through the tree combining end face 5, so as to achieve the purpose of exhausting the gas, and reduce the defect of gas holes.
In the specific embodiment, a plurality of tree box assembling structures 5 are also arranged on the main runner 2 in an array along the length direction, and the tree box assembling structures 5 are communicated with the main runner 2.
In the above embodiment, the main runner 2 is directly communicated with the pouring cup 1, so that the gas in the main runner 2 is directly discharged into the pouring cup 1, the defect of gas holes can be reduced, and the number of pouring products which can be welded on each pouring pin is increased.
In a specific embodiment, the number of the secondary runners 3 is not less than two, the plurality of secondary runners 3 are arranged in an array along the length direction of the primary runner 2, and two adjacent secondary runners 3 are arranged in parallel.
In the above embodiment, the plurality of secondary runners 3 increase the number of products to be cast by the gate stick at one time, and improve the production efficiency.
In the specific embodiment, the device further comprises a second exhaust pipe 8, and the tree box packaging structures 5 which are closest to each other on the two adjacent secondary flow passages 3 are communicated with each other through the second exhaust pipe 8.
In the above embodiment, when there are a plurality of secondary runners 3, the tree group cavity on the secondary runner 3 far away from the pouring cup 1 is communicated with the nearest tree group cavity on the secondary runner 3 above through the second exhaust pipe 8, on one hand, an exhaust outlet is provided for the tree group cavity below, on the other hand, the pipeline connection is saved, and the structure is overall simpler.
In the embodiment, the side surface of the tree box assembling structure 5 protrudes from the side surface of the secondary runner 3, and one surface of the tree box assembling structure 5 close to the pouring cup is communicated with the first exhaust pipe 4 or the second exhaust pipe 8.
In the above embodiment, when the side surface of the tree box structure 5 protrudes from the side surface of the secondary flow passage 3, the sectional area of the tree box structure 5 is larger than that of the secondary flow passage 3, and at this time, the gas in the secondary flow passage 3 is more easily collected in the tree box structure 5 and is located closer to the direction of the pouring cup 1 than the position, and the connection position of the first exhaust pipe 4 or the second exhaust pipe 8 and the tree box structure 5 is provided on the side of the tree box structure 5 close to the pouring cup 1, so that the gas can be more easily and completely discharged.
In the specific embodiment, the pouring cup 1 is funnel-shaped, as shown in fig. 3, and the inner wall of the pouring cup 1 is provided with a spiral groove 11.
In the above embodiment, the filter screen 6 is placed at the bottom of the pouring cup 1, and the pouring liquid flows in the spiral groove 11 before entering the main runner 2 from the pouring cup 1, so that the flowing time is prolonged, and the scum in the pouring liquid can be accumulated and stopped in the spiral groove 11 by combining the structure of the groove, so that the pouring scum entering the main runner is reduced, and then the scum hole of the casting is reduced.
In the above embodiment, the filter screen 6 increases the resistance of the casting liquid during casting, so that the residence time of the casting liquid at the pouring cup 1 is longer, and the casting scum therein is more easily accumulated in the spiral groove 11, thereby further reducing the slag hole of the casting.
In the specific embodiment, the pouring cup further comprises a buffer flow channel 7, the buffer flow channel 7 is communicated with the end part of the main flow channel 2 far away from the pouring cup 1, and the end part of the buffer flow channel 7 far away from the main flow channel 2 is closed.
In the above embodiment, buffer runner 7 is mainly used for slowing down the pouring turbulence caused by pouring liquid flowing down from main runner 2 at a high speed, and is used for precipitating the surface layer that falls off from the bottom of main runner 2 simultaneously, prevent it from entering into the cavity of the poured product, and then influence the quality of the pouring liquid entering into the tree group cavity, when buffer runner 7 is arranged, what mainly bears the impact is buffer runner 7, even if the surface layer appears on buffer runner 7 and falls off, the face layer that falls off can also continue to keep difficult outflow in buffer runner 7, and the pouring liquid can form a pouring buffer layer when buffer runner 7 is filled up simultaneously, prevent that the pouring liquid from falling down rapidly and forming turbulence with the inner wall impact, and then can reduce the pore defect, the face layer that falls off can not flow out and then reduce the risk of foundry goods sand hole.
In a specific embodiment, the cross-sectional area of the buffer flow channel 7 is smaller than the cross-sectional area of the main flow channel 2.
In the above embodiment, through the inner cavity structure of sprue 2 to buffer runner 7, the preferred reducing structure that is the internal diameter gradual change, at this moment, the pouring liquid bunches up gradually at the in-process that flows down to more easily form the laminar flow, can avoid producing the erosion and corrosion to the inner wall of sprue 2 and buffer runner 7, further reduce and appear the gas pocket defect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a sprue bar, its includes pouring basin (1), sprue (2) and time runner (3), and the bottom and sprue (2) of pouring basin (1) communicate each other, and sprue (2) extend to both sides from lateral wall department and form time runner (3), the length direction of time runner (3) and the length direction mutually perpendicular of sprue (2), its characterized in that still includes first blast pipe (4) and the box-packed structure of group tree (5), the box-packed structure of group tree (5) array is installed on time runner (3), and the box-packed structure of group tree (5) communicates each other with time runner (3), and the box-packed structure of group tree (5) communicates each other through first blast pipe (4) and pouring basin (1).
2. Gate stick according to claim 1, characterized in that the main runner (2) is provided with a number of tree box structures (5) in a length-wise array, the main runner (2) and the tree box structures (5) being in communication with each other.
3. The gate pin according to claim 1, wherein the number of the secondary runners (3) is not less than two, a plurality of the secondary runners (3) are arranged in an array along the length direction of the primary runner (2), and two adjacent secondary runners (3) are arranged in parallel.
4. The gate pin according to claim 3, further comprising a second exhaust pipe (8), wherein the tree box structures (5) nearest to each other on two adjacent secondary runners (3) are communicated with each other through the second exhaust pipe (8).
5. The gate pin according to claim 4, characterized in that the side of the tree box structure (5) protrudes beyond the side of the secondary runner (3), and the side of the tree box structure (5) adjacent to the pouring cup (1) is in communication with the first exhaust pipe (4) or the second exhaust pipe (8).
6. Sprue bar according to claim 1, characterized in that the sprue cup (1) is funnel-shaped, the inner wall of the sprue cup (1) being provided with a spiral groove (11).
7. The gate pin as claimed in claim 1, further comprising a filter screen (6), the filter screen (6) being mounted at the bottom of the pouring cup (1).
8. The gate pin according to claim 1, further comprising a buffer channel (7), wherein the buffer channel (7) is interconnected with an end of the main channel (2) remote from the pouring cup (1), and wherein an end of the buffer channel (7) remote from the main channel (2) is closed.
9. A gate pin according to claim 8, characterized in that the cross-sectional area of the buffer channel (7) is smaller than the cross-sectional area of the primary channel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242089.1A CN110918894A (en) | 2019-12-06 | 2019-12-06 | Gate bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242089.1A CN110918894A (en) | 2019-12-06 | 2019-12-06 | Gate bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110918894A true CN110918894A (en) | 2020-03-27 |
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ID=69857341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242089.1A Pending CN110918894A (en) | 2019-12-06 | 2019-12-06 | Gate bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110918894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579164A (en) * | 2021-05-31 | 2021-11-02 | 东风精密铸造有限公司 | Wedge-shaped gate stick and investment casting method |
| CN114749601A (en) * | 2022-05-07 | 2022-07-15 | 东风(十堰)有色铸件有限公司 | Multifunctional sprue cup and processing method thereof |
-
2019
- 2019-12-06 CN CN201911242089.1A patent/CN110918894A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113579164A (en) * | 2021-05-31 | 2021-11-02 | 东风精密铸造有限公司 | Wedge-shaped gate stick and investment casting method |
| CN114749601A (en) * | 2022-05-07 | 2022-07-15 | 东风(十堰)有色铸件有限公司 | Multifunctional sprue cup and processing method thereof |
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