End cover molding device for centrifugal roller casting

Abstract

The utility model discloses an end cover molding device for centrifugal roller casting, which comprises a molding base, a ferrule, a molding piece and a molding pressure head, a cavity is arranged among the molding base, the ferrule, the molding piece and the molding pressure head, an end cover and a molding sand filling part positioned at an inner hole of the end cover are arranged in the cavity, and the molding base is arranged on the lower side of the cavity. The sleeve ring is arranged on the outer side of the cavity, the modeling piece is arranged on the inner side of the cavity, the modeling pressing head is arranged on the upper side of the cavity, the upper portion of the modeling pressing head is connected to the driving device, a first matching female opening and a second matching female opening are sequentially formed in the upper side of the modeling base from inside to outside, the first matching female opening is matched with the modeling piece, and the second matching female opening is matched with the end cover. Through holes are correspondingly formed in the molding piece and the molding base, fastening devices are installed in the through holes, the molding pressing head is pressed through the driving device, the compactness and strength of the whole molding sand are improved, and the defects of molding sand cracks, sand falling and slag inclusion or sand wrapping of products are effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of end cover casting equipment, in particular to an end cover molding device for centrifugal roller casting. Background Art

[0002] Casting is one of the most important processes in the production of centrifugal rollers. Molding is a crucial step in the casting process, and end cap molding is a key component in the production of centrifugal rollers. The molded end caps are fixed to both ends of the roller mold with steel pins, forming a composite with the roller mold that forms the outer cavity of the roller. During centrifugal pouring, the roller mold rotates at high speed (approximately 900-1100 rpm) in a centrifuge. This forces the molten iron or steel poured into the mold cavity to adhere to the inner wall of the roller mold under the action of centrifugal force, forming a hollow cylindrical casting. This requires sufficient strength for the molding sand on the end caps to withstand the high temperature, high pressure, and erosion of the molten iron or steel during the pouring process. Otherwise, sand loss, working layer, or slag inclusions are likely to occur, affecting the quality of the finished product. Therefore, ensuring the strength of the molding sand on the end caps has become a key concern for roller manufacturers. Utility Model Content

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide an end cover molding device for centrifugal roller casting.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A device for molding an end cover for centrifugal roller casting comprises a molding base, a ferrule, a molding piece and a molding pressure head. A cavity is arranged between the molding base, the ferrule, the molding piece and the molding pressure head. The cavity comprises an end cover and a molding sand filling portion located at the inner hole of the end cover. The molding base is arranged on the lower side of the cavity, the ferrule is arranged on the outer side of the cavity, the molding piece is arranged on the inner side of the cavity, the molding pressure head is arranged on the upper side of the cavity, and the upper part of the molding pressure head is connected to the driving device. A first mating female opening and a second mating female opening are arranged on the upper side of the molding base from the inside to the outside. The first mating female opening is mated with the molding piece, and the second mating female opening is mated with the end cover. The molding piece and the molding base are correspondingly provided with through holes, and the through holes are equipped with fastening devices.

[0006] In certain embodiments of the present invention, a molding sand cavity is arranged between the molding pressure head and the end cover, and the two sides of the molding sand cavity are in contact with the ferrule and the molding piece respectively. The molding sand cavity is used to hold molding sand and facilitate compaction.

[0007] In some embodiments of the present invention, the side surface of the molding sand cavity is an inclined surface with the lower end facing inward, so that the molding sand cavity is in a shape that is larger at the top and smaller at the bottom, which is convenient for use.

[0008] In certain embodiments of the present invention, the axis of the through hole coincides with the vertical line of the center of the molding base; the fastening device includes a fastener, which is installed in the through hole, and a nut and a corresponding washer are provided at the end of the fastener.

[0009] In certain embodiments of the present invention, at least two ferrule hoisting holes are provided on the outer side of the ferrule to facilitate its transportation and hoisting.

[0010] In certain embodiments of the present invention, at least two end cover hoisting holes are provided on the outer side of the end cover to facilitate its transportation and hoisting, and also to facilitate the control of its position and direction during transportation and use.

[0011] In certain embodiments of the present invention, at least two base hoisting shafts are provided on the outer side of the sculpted base to facilitate its transportation and hoisting.

[0012] In certain embodiments of the present invention, at least two shaping member hoisting shafts are provided on the inner side of the shaping member to facilitate its transportation and hoisting.

[0013] In certain embodiments of the present invention, the driving device comprises a hydraulic cylinder, and a piston rod of the hydraulic cylinder is connected to an upper portion of the molding pressure head.

[0014] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The upper part of the molding pressure head is connected to the driving device. The driving device adopts a hydraulic cylinder. The hydraulic cylinder is used to provide compacting power. The molding pressure head is compacted by the hydraulic cylinder, thereby improving the compactness of the overall molding sand, which helps to improve the strength of the overall molding sand of the end cover, ensure the refractoriness of the molding sand, and effectively avoid the accident of iron (steel) running away during the centrifugal pouring process. At the same time, during the coating process, the molding sand is not prone to cracks and sand falling under the action of high-speed rotating centrifugal force and vibration force. It is not easy to fall off during pouring, which avoids the formation of slag inclusion or sand inclusion defects in the product and ensures product quality.

[0016] 2. The upper side of the modeling base is provided with a first mating female opening and a second mating female opening. The first mating female opening cooperates with the mating sub-opening on the modeling part, and the second mating female opening cooperates with the end cover opening on the end cover, which helps to accurately position and ensure the accuracy of the modeling size.

[0017] 3. A molding sand cavity is arranged between the molding pressure head and the end cover. The two sides of the molding sand cavity are in contact with the ferrule and the molding part respectively. The molding sand cavity is used to hold the molding sand and facilitate compaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the modeling base of the utility model;

[0021] Figure 3 is a schematic diagram of the end cover of the utility model;

[0022] Figure 4 A schematic diagram of a molding member of the present invention;

[0023] Description of main reference numerals:

[0024] 1. Molding base, 10. Base lifting shaft, 11. First matching female mouth, 12. Second matching female mouth, 2. Ferrule, 20. Ferrule lifting hole, 3. Molding part, 30. Matching sub-mouth, 31. Arc surface, 32. Molding part lifting shaft, 4. Molding pressure head, 5. End cover, 50. Molding sand filling part, 51. End cover mouth, 52. End cover lifting hole, 6. Driving device, 60. Hydraulic cylinder, 61. Piston rod, 7. Fastener, 70. Nut, 71. Washer, 8. Molding sand cavity. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.

[0027] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise expressly defined, directional words, such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 specific protection scope of the present utility model.

[0028] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, if the terms "fixed connection" or "fixed connection" are used, they should be understood in a broad sense, that is, any connection method without any displacement relationship and relative rotation relationship between the two parties, that is to say, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0029] In the claims, description and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0030] See also Figure 1-4 :

[0031] A centrifugal roller casting end cap molding device includes a molding base 1, a ferrule 2, a molding member 3, and a molding pressure head 4. A cavity is arranged between the molding base 1, the ferrule 2, the molding member 3, and the molding pressure head 4. The cavity includes an end cap 5 and a molding sand filling portion 50 located at the inner hole of the end cap 5. The molding sand is filled in the cavity and compacted to form a sand layer of the end cap 5.

[0032] The molding base 1 is arranged on the lower side of the cavity, the ferrule 2 is arranged on the outer side of the cavity, the molding member 3 is arranged on the inner side of the cavity, and the molding pressure head 4 is arranged on the upper side of the cavity;

[0033] The upper portion of the molding press head 4 is connected to a driving device 6, which is used to provide compaction power. Compressing the molding press head 4 by the driving device 6 helps to improve the compactness of the overall molding sand, thereby improving the strength of the overall molding sand of the end cover.

[0034] The upper side of the molding base 1 is arranged with a first mating female opening 11 and a second mating female opening 12 from the inside to the outside. The first mating female opening 11 cooperates with the mating sub-opening 30 on the molding part 3, and the second mating female opening 12 cooperates with the end cover opening 51 on the end cover 5, which helps to accurately position and ensure the accuracy of the molding size.

[0035] The molding member 3 and the molding base 1 are correspondingly provided with through holes, and fastening devices are installed in the through holes. The fastening devices are used to fasten the molding member 3 and the molding base 1.

[0036] As an embodiment, a molding sand cavity 8 is arranged between the molding pressure head 4 and the end cover 5. The two sides of the molding sand cavity 8 are in contact with the ring 2 and the molding part 3 respectively. The molding sand cavity 8 is used to hold molding sand and facilitate compaction.

[0037] As an embodiment, the top of the molding sand filling portion 50 is connected to the molding sand cavity 8 .

[0038] As an embodiment, the side surface of the molding sand cavity 8 is an inclined surface with the lower end facing inward, so that the molding sand cavity 8 is in a shape that is larger at the top and smaller at the bottom, which is convenient for taking and placing the molding sand cavity 8.

[0039] As an embodiment, a curved surface 31 is arranged on the side of the molding 3 facing the cavity.

[0040] As an embodiment, the axis of the through hole coincides with the vertical line of the center of the molding base 1; the fastening device includes a fastener 7, which is installed in the through hole, and a nut 70 and a corresponding washer 71 are provided at the end of the fastener 7.

[0041] As an embodiment, two ferrule hoisting holes 20 are symmetrically provided on the outer side of the ferrule 2 to facilitate its transportation and hoisting.

[0042] As an embodiment, two end cover hoisting holes 52 are symmetrically provided on the outer side of the end cover 5 to facilitate its transportation and hoisting, and also to control its position and direction during transportation and use.

[0043] As an embodiment, two base hoisting shafts 10 are symmetrically provided on the outer side of the sculpted base 1 to facilitate its transportation and hoisting.

[0044] As an embodiment, two shaping member hoisting shafts 32 are symmetrically provided on the inner side of the shaping member 3 to facilitate its transportation and hoisting.

[0045] As an embodiment, the driving device 6 includes a hydraulic cylinder 60, the piston rod 61 of the hydraulic cylinder is connected to the upper part of the molding pressure head 4, the hydraulic cylinder provides a compacting power for the molding pressure head 4, compacts the molding sand, forms a solid end cover sand layer, improves the compactness of the end cover molding sand, effectively reduces the occurrence of cracks and sand falling, and is not easy to fall off during pouring, avoiding the formation of slag inclusions and sand inclusion defects in the product.

[0046] The above description and embodiments are used to explain the scope of protection of the utility model, but do not constitute a limitation on the scope of protection of the utility model. Based on the enlightenment of the utility model or the above embodiments, modifications, equivalent replacements, or other improvements to the embodiments of the utility model or part of the technical features thereof that can be obtained by ordinary technicians in this field through logical analysis, reasoning, or limited experiments in combination with common knowledge, ordinary technical knowledge in this field and / or existing technology should be included in the scope of protection of the utility model.

Claims

1. An end cap molding device for centrifugal roller casting, characterized in that: The invention comprises a molding base (1), a ferrule (2), a molding piece (3) and a molding pressure head (4); a cavity is arranged among the molding base (1), the ferrule (2), the molding piece (3) and the molding pressure head (4); the cavity comprises an end cover (5) and a molding sand filling portion (50) located at the inner hole of the end cover (5); the molding base (1) is arranged on the lower side of the cavity, the ferrule (2) is arranged on the outer side of the cavity, the molding piece (3) is arranged on the inner side of the cavity, the molding pressure head (4) is arranged on the upper side of the cavity, the upper part of the molding pressure head (4) is connected to the driving device (6); a first mating female opening (11) and a second mating female opening (12) are arranged on the upper side of the molding base (1) from the inside to the outside in sequence; the first mating female opening (11) is mated with the molding piece (3), and the second mating female opening (12) is mated with the end cover (5); the molding piece (3) and the molding base (1) are correspondingly provided with through holes, and fastening devices are installed in the through holes.

2. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: A molding sand cavity (8) is arranged between the molding pressure head (4) and the end cover (5), and two sides of the molding sand cavity (8) are in contact with the ferrule (2) and the molding piece (3) respectively.

3. The end cap molding device for centrifugal roller casting according to claim 2, characterized in that: The side surface of the molding sand cavity (8) is an inclined surface with the lower end facing inwards.

4. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: The axis of the through hole coincides with the vertical line of the center of the molding base (1); the fastening device comprises a fastener (7), the fastener (7) is installed in the through hole, and a nut (70) and a corresponding washer (71) are provided at the end of the fastener (7).

5. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: At least two ferrule hanging holes (20) are provided on the outside of the ferrule (2).

6. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: At least two end cover hanging holes (52) are provided on the outer side of the end cover (5).

7. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: At least two base hanging shafts (10) are provided on the outside of the molding base (1).

8. The end cap molding device for centrifugal roller casting according to claim 1, characterized in that: At least two shaping piece hanging shafts (32) are provided inside the shaping piece (3).

9. The end cap molding device for centrifugal roller casting according to any one of claims 1 to 8, characterized in that: The driving device (6) comprises a hydraulic cylinder (60), and a piston rod (61) of the hydraulic cylinder (60) is connected to the upper part of the molding pressure head (4).

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