Mold feeding and loading device for centrifugal casting

Abstract

The utility model belongs to the field of centrifugal casting equipment, and provides a mold feeding and loading device for centrifugal casting, which comprises a ground rail, a ground flat car is arranged on the ground rail, a reversing mechanism for rotating a mold in multiple directions is arranged on the ground flat car, the reversing mechanism comprises a spindle motor and a spindle, and a power output end of the spindle faces upwards and is provided with a transmission seat. A U-shaped connecting shaft is arranged on the transmission seat and is in a horizontal state, one side of the connecting shaft penetrates through the transmission seat and is in key connection with the transmission seat, a transmission thread pair is arranged in the center of the connecting shaft, a first motor is arranged at the end of the transmission thread pair, and a second motor is arranged on the other side of the connecting shaft. An output shaft of the second motor penetrates through the connecting shaft, a flange shaft is arranged at the end of the output shaft, a clamping seat opposite to the transmission seat is arranged at the end of the flange shaft, and the clamping seat is used for being matched with a die. The device is reasonable in design, simple in structure, high in transfer efficiency, beneficial for guaranteeing operation safety and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the field of centrifugal casting equipment and relates to a mold feeding device for centrifugal casting. Background Art

[0002] Centrifugal casting is a technique and method of injecting liquid metal into a high-speed rotating mold, causing the molten metal to perform centrifugal motion to fill the mold and form a casting. Due to the centrifugal motion, the liquid metal can fill the mold well in the radial direction and form the free surface of the casting. A cylindrical inner hole can be obtained without a core, which helps to remove gas and inclusions in the liquid metal, affecting the crystallization process of the metal, thereby improving the mechanical and physical properties of the casting. According to the spatial position of the mold's rotation axis, common centrifugal casting can be divided into horizontal centrifugal casting and vertical centrifugal casting. Centrifugal casting when the mold's rotation axis is horizontal or has a very small angle (4°) with the horizontal line is called horizontal centrifugal casting. Centrifugal casting when the mold's rotation axis is vertical is called vertical centrifugal casting.

[0003] At present, horizontal centrifugal casting equipment is generally used in workshops producing hob cutter rings. The molds used for centrifugal casting usually need to be heat treated in a furnace-type equipment before being put on the machine, which is conducive to ensuring the quality of casting. Generally, the molds need to be hoisted from the furnace-type equipment to the machine by a crane to the turnover platform matched with the centrifuge, and then sent to the centrifuge by the turnover platform. However, due to the certain distance between the furnace-type equipment and the turnover platform, using a crane to transfer the molds has the problem of low efficiency and increased risk factor. Utility Model Content

[0004] Aiming at the technical problems existing in the process of sending molds onto a machine, the utility model provides a centrifugal casting mold sending device which has reasonable design, simple structure, high transfer efficiency and is conducive to ensuring operation safety.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a mold feeding device for centrifugal casting, including a ground rail, a ground car is arranged on the ground rail, and a reversing mechanism for rotating the mold in multiple directions is arranged on the ground car. The reversing mechanism includes a spindle motor and a spindle. The power output end of the spindle faces upward and is provided with a transmission seat. A U-shaped connecting shaft is arranged on the transmission seat and is in a horizontal state. One side of the connecting shaft passes through the transmission seat and is connected with the transmission seat key. A transmission thread pair is arranged at the center of the connecting shaft, a first motor is arranged at the end of the transmission thread pair, and a second motor is arranged on the other side of the connecting shaft. The output shaft of the second motor passes through the connecting shaft and a flange shaft is arranged at its end. The end of the flange shaft is provided with a clamping seat distributed opposite to the transmission seat, and the clamping seat is used to cooperate with the mold.

[0006] Preferably, the transmission thread pair comprises a threaded hole arranged at the center of the connecting shaft, a piston rotatably matched therewith is arranged in the threaded hole, and a piston shaft is arranged between the piston and the first motor.

[0007] Preferably, the end of the transmission seat is provided with an end plate which is nested therewith, the center of the end plate is used for passing the through hole of the piston shaft, and the inner wall of the transmission seat is provided with a C-shaped sleeve which cooperates with the connecting shaft.

[0008] Preferably, the clamping seat comprises a U-shaped side plate, the inside of the side plate is provided with clamping strips distributed along the U-shaped track of the inner wall thereof, and the side plate is provided with a U-shaped support plate on the side thereof facing the transmission seat.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. The utility model provides a centrifugal casting mold feeding device, the clamping end of the clamping seat is facing upward to support the mold, the spindle motor drives the spindle and the transmission seat to rotate the mold around the Z axis, and the second motor drives the flange shaft to rotate to turn the mold to the side facing the turnover platform, the turnover platform clamps the mold, and the first motor drives the connecting shaft to translate to make the clamping seat leave the end of the turnover platform, so as to completely separate from the mold. The device has a reasonable design, a simple structure, a high transfer efficiency, and is conducive to ensuring operational safety, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 An axonometric view of a centrifugal casting mold feeding device provided in an embodiment;

[0013] Figure 2 An axonometric view of a ground level vehicle and a reversing mechanism provided in an embodiment;

[0014] Figure 3 A front view of a reversing mechanism provided in an embodiment;

[0015] Figure 4 A cross-sectional view of the reversing mechanism provided in the embodiment in the GG direction;

[0016] In the above figures, 1. ground rail; 2. ground car; 3. reversing mechanism; 31. spindle motor; 32. spindle; 33. transmission seat; 34. connecting shaft; 35. transmission thread pair; 351. threaded hole; 352. piston; 353. piston shaft; 36. first motor; 37. second motor; 38. flange shaft; 39. clamping seat; 391. side plate; 392. clamping strip; 393. support plate; 310. end plate; 311. bushing. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Examples, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a mold feeding device for centrifugal casting, including a ground rail 1, a ground car 2 is arranged on the ground rail 1, a reversing mechanism 3 for rotating the mold in multiple directions is arranged on the ground car 2, the reversing mechanism 3 includes a spindle motor 31 and a spindle 32, the power output end of the spindle 32 faces upward and is provided with a transmission seat 33, a U-shaped connecting shaft 34 is arranged on the transmission seat 33 and is in a horizontal state, one side of the connecting shaft 34 passes through the transmission seat 33 and is key-connected with the transmission seat 33, a transmission thread pair 35 is arranged at the center of the connecting shaft 34, a first motor 36 is arranged at the end of the transmission thread pair 35, a second motor 37 is arranged on the other side of the connecting shaft 34, the output shaft of the second motor 37 passes through the connecting shaft 34 and is provided with a flange shaft 38 at its end, and a clamping seat 39 distributed opposite to the transmission seat 33 is arranged at the end of the flange shaft 38, and the clamping seat 39 is used to cooperate with the mold. The connecting shaft 34 is U-shaped, which can improve the space utilization of the device on the one hand, and can make the center of gravity of the reversing mechanism 3 as close to the center of the device as possible on the other hand, which is beneficial to improving the working stability of the device.

[0020] Specifically, the clamping end of the clamping seat 39 is facing upward to support the mold. After the mold is taken out of the furnace equipment, it is clamped by a crane or pliers and placed on the clamping seat 39. Since the rail 1 where the turnover platform is located is perpendicular to the rail 1 where the device is located, the spindle motor 31 drives the spindle and the transmission seat 33 to rotate the mold around the Z axis until the open end of the clamping seat 39 is perpendicular to the direction of the rail 1 where the turnover platform is located. The second motor 37 drives the flange shaft 38 to rotate to turn the mold from the face-up state to the state facing the turnover platform. Then, the supporting and expanding device of the turnover platform clamps the mold, and the first motor 36 drives the transmission thread pair 35 to make the connecting shaft 34 translate along the length direction of the transmission seat 33 until the clamping seat 39 leaves the end of the turnover platform and the clamping seat 39 is completely separated from the mold. In this way, the mold can be installed on the rotating shaft platform in a flexible manner, which is convenient for the subsequent installation of the mold on the centrifugal casting machine. The device has a reasonable design, a simple structure, a high transfer efficiency and is conducive to ensuring operational safety.

[0021] In order to improve the linear driving performance of the first motor 36 on the connecting shaft 34, the transmission thread pair 35 provided by the utility model includes a threaded hole 351 arranged at the center of the connecting shaft 34, a piston 352 rotatingly matched therewith is arranged in the threaded hole 351, and a piston shaft 353 is arranged between the piston 352 and the first motor 36. In this way, the first motor 36 drives the piston shaft 353 to rotate synchronously with the piston 352, and since the connecting shaft 34 is key-connected to the transmission seat 33, the rotational matching action of the piston 352 and the threaded hole 351 can be converted into a linear movement of the connecting shaft 34, thereby achieving the purpose of linearly driving the connecting shaft 34, and can also achieve the purpose of mechanically separating the mold from the device.

[0022] In order to improve the translation stability of the connecting shaft 34, the utility model is provided with an end plate 310 which is nested and matched with the end of the transmission seat 33, the center of the end plate 310 is used to pass the through hole of the piston shaft 353, and the inner wall of the transmission seat 33 is provided with a C-shaped sleeve 311 which is matched with the connecting shaft 34. The inner end surface of the sleeve 311 is smoothly matched with the connecting shaft 34, and the key on the connecting shaft 34 is slidably matched with the C-shaped opening on the sleeve, and the C-shaped opening is equivalent to a keyway, which provides a guide for the translation of the key structure and prevents the connecting shaft 34 from rotating after being driven by the piston.

[0023] In order to improve the clamping stability of the clamping seat 39 on the mold, the clamping seat 39 provided by the utility model includes a U-shaped side plate 391, and the interior of the side plate 391 is provided with a clamping strip 392 distributed along the U-shaped track of its inner wall, and the side plate 392 is provided with a U-shaped support plate 393 on the side facing the transmission seat 33. The support plate 393 supports the end face of the mold, the clamping strip 392 limits the other end face of the mold, and the inner wall of the side plate 391 clamps the outer side face of the mold, and the length design of the side plate can effectively prevent the mold from automatically rolling out of its clamping diameter.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A centrifugal casting mold feeding device, comprising a ground rail, on which a ground level vehicle is arranged, characterized in that: The horizontal car is provided with a reversing mechanism for rotating the mold in multiple directions, and the reversing mechanism includes a spindle motor and a spindle. The power output end of the spindle faces upward and is provided with a transmission seat. The transmission seat is provided with a U-shaped connecting shaft and is in a horizontal state. One side of the connecting shaft passes through the transmission seat and is key-connected to the transmission seat. A transmission thread pair is provided at the center of the connecting shaft, a first motor is provided at the end of the transmission thread pair, and a second motor is provided on the other side of the connecting shaft. The output shaft of the second motor passes through the connecting shaft and is provided with a flange shaft at its end. The end of the flange shaft is provided with a clamping seat distributed opposite to the transmission seat, and the clamping seat is used to cooperate with the mold.

2. A centrifugal casting mold feeding device according to claim 1, characterized in that: The transmission thread pair comprises a threaded hole arranged at the center of the connecting shaft, a piston rotatably matched with the threaded hole is arranged in the threaded hole, and a piston shaft is arranged between the piston and the first motor.

3. A centrifugal casting mold feeding device according to claim 2, characterized in that: The end of the transmission seat is provided with an end plate which is nested and matched therewith, the center of the end plate is used for passing the through hole of the piston shaft, and the inner wall of the transmission seat is provided with a C-shaped sleeve which is matched with the connecting shaft.

4. A centrifugal casting mold feeding device according to claim 3, characterized in that: The clamping seat comprises a U-shaped side plate, the inside of the side plate is provided with a clamping strip distributed along the U-shaped track of the inner wall thereof, and the side of the side plate facing the transmission seat is provided with a U-shaped supporting plate.

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