A paper runner for casting and a paper runner for casting

Abstract

The application provides a paper casting runner pipe and a paper casting runner. The paper casting runner pipe comprises a runner pipe body and a bonding wall. A first breakable zone is arranged on the side of the bonding wall close to the runner pipe body along the length direction of the bonding wall. A second breakable zone and / or a notch are arranged on the bonding wall along a direction at an angle to the length direction of the bonding wall. A plurality of second breakable zones and / or notches are arranged on the bonding wall at intervals. The paper casting runner pipe can be cut, and the corresponding length of the bonding wall can be separated by breaking the first breakable zone of the corresponding length, so that the paper casting runner pipe can be easily inserted into a connecting piece without a receiving groove. Meanwhile, the paper casting runner pipe can rotate along the circumference with respect to the connecting piece. The structure complexity and manufacturing cost of the connecting piece are reduced, and the use scenario of the connecting piece is expanded.

Description

Technical Field

[0001] This application relates to the field of casting technology, specifically to a paper gating pipe for casting and a paper gating system for casting. Background Technology

[0002] Paper gating pipes for casting are components of the gating system used in metal casting processes, primarily guiding molten metal from the pouring cup into the mold cavity. These pipes are made of high-temperature resistant special paper material, featuring lightweight, environmental friendliness, ease of molding, and minimal combustion residue. Using paper gating pipes effectively reduces heat loss and oxidation inclusions in the molten metal, improving casting quality.

[0003] Among them, the half-paper gating pipe is a common type of paper gating pipe used in casting. Its basic structure consists of two symmetrical semicircular tubes with adhesive walls at their edges. By bonding the adhesive walls (the structure formed by the two adhesive walls after bonding is called the "adhesive wall"), the semicircular tubes are combined to form a complete circular tube channel, thus obtaining the gating pipe.

[0004] In practical use, the sprue pipe (half-paper sprue pipe) needs to be cut according to the required length. After cutting, the sprue pipe is connected by connectors (such as multi-way fittings (tees, crosses, five-way fittings, etc.) and elbows) to form a complete paper sprue for casting. Since each semi-circular pipe is generally made by casting or other processes, the semi-circular pipe and its adhesive wall are an integral structure and difficult to separate. Therefore, after cutting, the adhesive wall will extend to the cut end of the sprue pipe.

[0005] To facilitate the connection of the various sprue pipes, the inner side of the socket end of the connector used needs to be provided with a receiving groove to accommodate the bonding wall of the sprue pipe (see CN 114101589 A). However, this solution will cause the sprue pipe to be unable to rotate circumferentially relative to the connector. In more complex paper sprues for casting (such as when the various sprue pipes are not located in the same plane), it is necessary to customize connectors with receiving grooves of different angles, which increases production costs and extends the manufacturing cycle of castings. Utility Model Content

[0006] To address the problems in the prior art, this application provides a paper gating pipe for casting, and a paper gating system for casting. The technical solution of this application is as follows:

[0007] A paper gating pipe for casting includes: a gating pipe body and a bonding wall; wherein, along the length direction of the bonding wall, a first breakable zone is provided on the side of the bonding wall near the gating pipe body; and, along a direction forming an angle with the length direction of the bonding wall, a second breakable zone and / or a notch is provided on the bonding wall, and a plurality of the second breakable zones and / or the notches are provided at intervals on the bonding wall.

[0008] Furthermore, the included angle is 60°~120°, preferably 90°.

[0009] Furthermore, the first fragile area and / or the second fragile area are grooves and / or rows of holes.

[0010] Furthermore, the outer surface of the gating pipe body is provided with a pattern.

[0011] Furthermore, the paper gating pipe for casting also includes: a first socket end, which is disposed at one end of the gating pipe body.

[0012] Furthermore, the inner surface of the first socket end is provided with a pattern.

[0013] Furthermore, the gating pipe body is a straight pipe or a curved pipe.

[0014] This application also provides a paper gating system for casting, comprising: a paper gating system tube for casting as described above; and a connector.

[0015] Furthermore, the connector includes multi-way fittings and / or elbows.

[0016] Furthermore, the connector is provided with a socket end, and the inner surface of the socket end is provided with a pattern.

[0017] The paper gating tube for casting provided in this application allows for the separation of the bonding wall of a corresponding length by breaking a certain length of the first easily breakable zone near the cut end after cutting the paper gating tube to the required length. This makes the outer circumference of the cut end of the paper gating tube circular, making it easy to insert into a connector that does not require a receiving groove. The paper gating tube can rotate circumferentially relative to the connector. This reduces the structural complexity of the connector (eliminating the need for a receiving groove to accommodate the bonding wall) and manufacturing costs, and expands the application scenarios of the connector. The foundry only needs to stock commonly used connectors without having to consider the problems caused by the need to set a receiving groove for the bonding wall in existing connectors. Compared with existing solutions, this reduces production costs and improves the manufacturing efficiency of castings.

[0018] The above description is merely an overview of the technical solution of this application. In order to make the technical means of this application clearer and more understandable, so that those skilled in the art can implement it according to the contents of the specification, and in order to make the above and other objects, features and advantages of this application more obvious and understandable, the following is an example of a specific implementation of this application. Attached Figure Description

[0019] Figure 1 : A side view of a paper gating pipe for casting in one embodiment of this application;

[0020] Figure 2 : A front view of a paper gating pipe for casting in one embodiment of this application;

[0021] Figure 3 : A side view of the elbow structure in one embodiment of this application;

[0022] Figure 4 : A side view of the three-way structure in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10. Paper gating pipe for casting; 11. Gating pipe body; 12. Bonded wall; 13. First fracture zone; 14. Notch; 15. First socket end;

[0025] 20. Elbow; 21. Second socket end;

[0026] 30. Tee; 31. Third socket end. Detailed Implementation

[0027] The following embodiments of this application are only used to illustrate specific implementation methods of this application, and these embodiments should not be construed as limitations on this application. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this application shall be considered equivalent substitutions and fall within the protection scope of this application.

[0028] Those skilled in the art should understand that, in the disclosure of this application, the terms "first," "second," "third," "fourth," "fifth," etc., are only used to distinguish different structures and do not limit the number of specific structures, connection relationships, etc.; in addition, the orientation or positional relationship indicated by "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, and is not intended to 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, the above terms should not be construed as limitations on this application.

[0029] This embodiment provides a paper gating pipe 10 for casting, such as Figure 1 , Figure 2 As shown,

[0030] Includes: the gating pipe body 11 and the bonding wall 12;

[0031] Wherein, along the length direction of the bonding wall 12, a first breakable zone 13 is provided on the side of the bonding wall 12 near the gating pipe body 11.

[0032] The breakable zone refers to the area that is easily broken / cut compared to other locations on the bonded wall 12. For example... Figure 1 , Figure 2 As shown, for a half-paper gating pipe, the gating pipe body 11 is the structure formed by combining two semi-circular pipes.

[0033] This embodiment provides a novel paper gating tube 10 for casting. Along the length of the bonding wall 12, a first breakable section 13 is provided on the side of the bonding wall 12 near the gating tube body 11. Therefore, after the paper gating tube 10 is cut to the required length, a certain length of the bonding wall 12 can be separated by breaking the first breakable section 13 near the cut end. This makes the outer periphery of the cut end of the paper gating tube 10 circular, facilitating insertion into a connector that does not require a receiving groove (such as...). Figure 3 The elbow 20 shown Figure 4 The tee 30 shown can rotate circumferentially relative to the connector, which reduces the structural complexity and manufacturing cost of the connector and expands its application scenarios. As a result, the foundry only needs to stock commonly used connectors without having to consider the problem of having to set up receiving grooves to accommodate the bonding wall 12 in existing connectors. This reduces production costs and improves the manufacturing efficiency of castings compared to existing solutions.

[0034] In addition, such as Figure 1 , Figure 2 The second breakable zone and / or notch 14 are provided in a direction that forms an angle α with the length direction of the adhesive wall 12 (i.e., the direction in which the second breakable zone and / or notch 14 is provided intersects the length direction of the adhesive wall 12), and a plurality of second breakable zones or notches 14 are provided on the adhesive wall 12 at intervals.

[0035] Therefore, at the cut end of the paper gating tube 10 for casting, after breaking off a certain length of the first easily broken area 13, a certain length of the bonding wall 12 can be more easily separated at the cut end of the paper gating tube 10 for casting by breaking off the second easily broken area or the notch 14. Regarding the specific included angle α, it is preferably 60°~120° (such as 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115° or 120°), and in this embodiment it is specifically 90° (i.e., perpendicular to the length direction of the bonding wall 12), and more specifically, in this embodiment it is set as the notch 14.

[0036] Regarding the spacing of the second breakable zone or notch 14, based on the above scheme provided in this application, those skilled in the art can set it according to specific circumstances (such as the length of the socket end), such as setting it to 1cm~10cm (specifically, it can be 1cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm or 10cm).

[0037] In one implementation, such as Figure 1 , Figure 2 As shown, the first fragile area 13 and / or the second fragile area are grooves and / or rows of holes.

[0038] For the groove, that is, its thickness is less than that of other locations of the bonding wall 12. Specifically, the length of the groove (the dimension along the length direction of the bonding wall 12) can be 3 to 10 mm (specifically, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm); the width of the groove (the dimension along the width direction of the bonding wall 12) can be 1 mm to 5 mm (specifically, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm); and / or, the thickness of the groove can be the same as that of the gating pipe body 11, so as to ensure that the two symmetrical semicircular pipes in the half-paper gating pipe can be firmly connected.

[0039] A hole row refers to a row of holes. Regarding the form of the holes, they can be through holes or blind holes; regarding the shape of the holes, they can be round holes, oval holes, polygonal holes, or oblong holes, etc. For example... Figure 1 , Figure 2 As shown, this embodiment uses a waist-shaped through hole.

[0040] Regarding the method of setting the first fragile zone 13, the second fragile zone, and the notch 14, corresponding components (such as protrusions) can be set in the mold to be directly formed when the paper sprue tube 10 for casting is formed by the mold; or, it can be formed by existing methods such as cutting, punching ( / punching), and drilling after the paper sprue tube 10 for casting is formed.

[0041] In one embodiment, the outer surface of the sprue pipe body 11 is provided with a pattern (not shown in the figure) to increase the friction between the sprue pipe body 11 and the socket end of the connector when they are connected, thereby improving the connection stability between them. Preferably, the entire outer surface of the sprue pipe body 11 is provided with a pattern.

[0042] In one implementation, such as Figure 1 , Figure 2As shown, the casting paper gating tube 10 further includes a first socket end 15, which is disposed at one end of the gating tube body 11. This facilitates the insertion of one end of a casting paper gating tube 10 (the end without the first socket end 15) into the first socket end 15 of another casting paper gating tube 10, enabling the connection of two or more casting paper gating tubes 10. This extends the length of the casting paper gating tube 10 to suit more application scenarios, and allows for the utilization of shorter, cut casting paper gating tubes 10, reducing manufacturing costs. Alternatively, it facilitates the insertion of the connector's insertion end into the first socket end 15 to connect the connector and the casting paper gating tube 10.

[0043] Preferably, the inner surface of the first socket end 15 is provided with a pattern to increase the stability of the connection.

[0044] Generally, the gating pipe body 11 is a straight pipe. Depending on the need, the gating pipe body 11 can also be a bent pipe, thus enabling the paper gating pipe 10 for casting of this application to be applicable to more usage scenarios.

[0045] In addition, this application also provides a paper gating system for casting, such as... Figures 1-4 As shown, it includes: any of the above-mentioned paper gating pipes 10 for casting; and connectors, wherein, for connectors provided with socket ends (such as the second socket end 21, the third socket end 31), the inner side of the socket end does not need to be provided with a receiving groove for accommodating the gating pipe bonding wall 12. Specifically, the connectors include multi-way fittings (such as tees, crosses, or five-way fittings, etc.); Figure 4 A tee 30 structure is shown) and / or an elbow 20 (such as Figure 3 As shown in the figure, preferably, in connectors with socket ends (such as the second socket end 21 and the third socket end 31), the inner surface of the socket end is preferably provided with a pattern (not shown in the figure) to increase the stability of the connection.

[0046] Although the embodiments of this application have been described above, this application is not limited to the specific embodiments and application fields described above. The specific embodiments described above are merely illustrative and instructive, and not restrictive. Those skilled in the art, based on the guidance of this specification and without departing from the scope of protection of the claims of this application, can make many other forms, all of which are within the scope of protection claimed in this application.

Claims

1. A paper runner for casting, characterized in that, comprising: a runner body and a bonding wall are provided; a first breakable zone is provided on the bonding wall on the side close to the runner body along the length direction of the bonding wall; and a second breakable zone and / or a notch are provided on the bonding wall in a direction at an angle to the length direction of the bonding wall, and a plurality of the second breakable zones and / or the notches are provided on the bonding wall at intervals. 2.The paper runner for casting according to claim 1, characterized in that, the angle is 60°-120°. 3.The paper runner for casting according to claim 2, characterized in that, the angle is 90°. 4.The paper runner for casting according to claim 1, characterized in that, the first breakable zone and / or the second breakable zone are grooves and / or rows of holes. 5.The paper runner for casting according to claim 1, characterized in that, a pattern is provided on the outer surface of the runner body. 6.The paper runner for casting according to claim 1, characterized in that, the paper runner for casting further comprises: a first socket end provided on one end of the runner body. 7.The paper runner for casting according to claim 6, characterized in that, a pattern is provided on the inner surface of the first socket end. 8.The paper runner for casting according to claim 1, characterized in that, the runner body is a straight pipe or a bent pipe.

9. A paper runner for casting, characterized by comprises: the paper runner for casting according to any one of claims 1-8; and a connecting piece. 10.The paper runner for casting according to claim 9, characterized in that, the connecting piece comprises a multi-way pipe piece and / or an elbow. 11.The paper runner for casting according to claim 9 or 10, characterized in that, the connecting piece is provided with a socket end, and a pattern is provided on the inner surface of the socket end. ​

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