A spinning centrifugal processing device for bimetallic brake drums

Abstract

The utility model relates to a kind of spinning centrifugal processing device of bimetallic brake drum.It solves the problem of poor linkage and synchronism when brake drum is spinning in prior art.It includes bimetallic brake drum, centrifugal spinning assembly is connected to the upper end of bimetallic brake drum through spinning linkage structure, and bimetallic brake drum lower end is connected with drainage assembly through heat conduction drainage structure.The utility model has the advantages of effectively improving the linkage and synchronism of spinning, reducing the vibration deviation of brake drum during spinning, and good stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment technology, specifically to a spinning centrifugal processing device for a bimetallic brake drum. Background Technology

[0002] A spinning machine is a device that uses rotation to change the stress point of a workpiece from a point to a line, and then from a line to a surface, while simultaneously applying pressure in a certain direction to deform and flow the metal material along that direction to form a specific shape. Composite brake drum blanks are generally formed through spinning, rolling, and centrifugal casting. After spinning, the steel shell flange has a convex center and concave edges, resulting in a relatively large flatness. Furthermore, during centrifugal casting, the steel shell is fixed by clamping the flange with jaws and then pouring molten iron into the inner side of the shell. The flange is the stress surface, and due to centrifugal force, the flatness of the flange further increases. This leads to an increase in black scale on the flange after precision machining of the brake drum. If black scale is present on the flange, the brake drum is scrapped, reducing the yield and resulting in significant economic losses. In addition, existing brake drum processing equipment suffers from poor linkage and synchronization during spinning, affecting the processing quality of the inner wall of the brake drum.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a composite brake drum steel shell spinning die [CN202320734587.3], which includes a rotating base, a die core disposed on the rotating base, an upper clamping plate for pressing the workpiece above the die core, and a conical groove on the upper surface of the die core, with the upper clamping plate cooperating with the conical groove.

[0004] The above solution has solved to some extent the problem of high flange scrap rate and reduced brake drum yield during the spinning process of brake drum steel shell. However, the solution still has many shortcomings. For example, the linkage and synchronization of the brake drum processing equipment are not good when spinning, which affects the processing quality of the inner wall of the brake drum. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing a centrifugal spinning device for bimetallic brake drums.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a centrifugal spinning processing device for a bimetallic brake drum, comprising a bimetallic brake drum, wherein the upper end of the bimetallic brake drum is connected to a centrifugal spinning assembly through a spinning linkage structure, and the lower end of the bimetallic brake drum is connected to a drain assembly through a heat-conducting and flow-guiding structure.

[0007] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the spinning linkage structure includes a linkage flange disposed on the upper end face of the bimetallic brake drum, the linkage flange having a plurality of linkage holes circumferentially provided, and the upper end face of the bimetallic brake drum having a plurality of mounting holes corresponding to the linkage holes circumferentially provided.

[0008] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the linkage flange shaft is provided with a flow hole, which is connected to the inner circumferential side of the bimetallic brake drum.

[0009] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the centrifugal spinning assembly includes a centrifugal spinning cylinder, which is circumferentially provided with a number of vertically inclined swirling blades, and adjacent swirling blades are staggered.

[0010] In the above-mentioned spinning centrifugal processing device for a bimetallic brake drum, the upper end face of the spinning centrifugal cylinder has a connecting flange, and the connecting flange is provided with a drive connection hole for connecting to a centrifugal motor; a sealing sleeve is provided circumferentially on the spinning centrifugal cylinder, the bottom of the sealing sleeve is fixedly connected to the linkage flange, and the lower end of the spinning centrifugal cylinder is fixed to the linkage flange, and the circumferential side of the spinning centrifugal cylinder is interconnected with the inner circumferential side of the bimetallic brake drum through a flow hole.

[0011] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the heat conduction and diversion structure includes a heating base disposed at the lower end of the bimetallic brake drum. The upper surface of the heating base is provided with a positioning groove into which the bimetallic brake drum can be inserted. Several heat conduction columns are arranged circumferentially on the platform of the positioning groove, and the heat conduction columns are inserted into the bottom of the bimetallic brake drum.

[0012] In the above-mentioned centrifugal spinning device for bimetallic brake drum, a heat transfer cylinder is provided at the lower end of the heating base, a rotating positioning platform is provided on the inner side of the upper end of the heat transfer cylinder and the lower end face is circumferentially connected to the heat-conducting base, and the heat-conducting base is connected to an external electric heating device.

[0013] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the drainage assembly includes a guide pipe rotatably connected to the lower end of the heating base. The heating base has a guide hole at its center that communicates with the guide pipe. The guide pipe extends circumferentially inward toward the heat transfer cylinder, and a guide pipe opening and closing switch is provided circumferentially outward of the heat transfer cylinder.

[0014] In the above-mentioned centrifugal spinning device for bimetallic brake drum, a support step is provided inside the heat transfer cylinder, and a flow receiving seat with an open upper end is positioned on the support step. The lower end of the flow receiving seat has a drain hole connected to an external drain pipe.

[0015] In the above-mentioned centrifugal spinning device for bimetallic brake drum, the lower end of the receiving seat extends circumferentially inward toward the heat-conducting base, and there is no contact between the receiving seat and the heat-conducting base circumferentially.

[0016] Compared with the prior art, the advantages of this utility model are as follows: the rigid connection of the spinning linkage structure and the constraint of the sealing sleeve effectively improve the linkage and synchronization of spinning processing and reduce vibration deviation; secondly, the uniformity of the bimetallic brake drum inner wall processing is optimized by combining the staggered swirl blade design of the centrifugal spinning component; at the same time, the heat conduction and drainage components realize efficient temperature control and waste chip discharge, comprehensively improving the processing quality of the brake drum inner wall. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of this utility model;

[0019] Figure 3 This is a cross-sectional view of the heat transfer cylinder and the inlet seat in this utility model.

[0020] In the diagram: 1. Bimetallic brake drum; 2. Spinning linkage structure; 21. Linkage flange; 22. Linkage hole; 23. Mounting hole; 24. Flow passage hole; 3. Centrifugal spinning assembly; 31. Spinning centrifugal cylinder; 32. Swirl blades; 33. Connecting flange; 34. Drive connection hole; 35. Sealing sleeve; 4. Heat conduction and diversion structure; 41. Heating base; 42. Positioning groove; 43. Heat conduction column; 44. Heat transfer cylinder; 45. Rotating positioning platform; 46. Heat conduction base; 57. Drainage assembly; 51. Flow guide pipe; 52. Flow guide hole; 53. Support step; 54. Flow receiving seat; 55. Flow guide pipe on / off switch. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-3 As shown, a centrifugal spinning processing device for a bimetallic brake drum includes a bimetallic brake drum 1, a centrifugal spinning assembly 3 connected to the upper end of the bimetallic brake drum 1 through a spinning linkage structure 2, and a drainage assembly 5 connected to the lower end of the bimetallic brake drum 1 through a heat-conducting and drainage structure 4.

[0023] The spinning linkage structure 2 includes a linkage flange 21 disposed on the upper end face of the bimetallic brake drum 1. The linkage flange 21 is provided with a plurality of linkage holes 22 in the circumferential direction, and the upper end face of the bimetallic brake drum 1 is provided with a plurality of mounting holes 23 corresponding to the linkage holes 22 in the circumferential direction.

[0024] As can be seen, the linkage flange 21 has a flow hole 24 on its shaft, and the flow hole 24 is interconnected with the bimetallic brake drum 1 circumferentially inward.

[0025] Obviously, the centrifugal spinning assembly 3 includes a spinning centrifugal cylinder 31, and the spinning centrifugal cylinder 31 is circumferentially provided with a number of vertically inclined swirl blades 32, and two adjacent swirl blades 32 are staggered.

[0026] When the centrifugal cylinder 31 rotates, its circumferential swirling blades 32 rotate along with it, using centrifugal force to generate a swirling effect.

[0027] Specifically, the upper end face of the spinning centrifuge cylinder 31 has a connecting flange 33, and the connecting flange 33 is provided with a drive connection hole 34 for connecting to the centrifugal motor; a sealing sleeve 35 is provided circumferentially on the spinning centrifuge cylinder 31, the bottom of the sealing sleeve 35 is fixedly connected to the linkage flange 21, and the lower end of the spinning centrifuge cylinder 31 is fixed on the linkage flange 21, and the spinning centrifuge cylinder 31 is circumferentially connected to the inner side of the bimetallic brake drum 1 through the flow hole 24.

[0028] The sealing sleeve 35 seals the connection between the spinning centrifugal cylinder 31 and the linkage flange 21, ensuring that the molten iron swirling flow acts stably on the inner side of the bimetallic brake drum 1.

[0029] When the centrifugal motor is working, it drives the spinning centrifugal cylinder 31 to rotate, which in turn drives the bimetallic brake drum 1 to move synchronously through the linkage flange 21.

[0030] Furthermore, the heat conduction and diversion structure 4 includes a heating base 41 disposed at the lower end of the bimetallic brake drum 1. The upper surface of the heating base 41 is provided with a positioning groove 42 into which the bimetallic brake drum 1 can be inserted. The platform of the positioning groove 42 is provided with a plurality of heat conduction columns 43 in the circumferential direction, and the heat conduction columns 43 are inserted into the bottom of the bimetallic brake drum 1.

[0031] Furthermore, a heat transfer cylinder 44 is provided at the lower end of the heating base 41, and a rotating positioning platform 45 is provided on the inner side of the upper end of the heat transfer cylinder 44, with its lower end face circumferentially connected to the heat-conducting base 46, and the heat-conducting base 46 is connected to an external electric heating device.

[0032] The external electric heating device transfers heat to the heat transfer cylinder 44 through the heat-conducting base 46, and then to the heating base 41 through the rotating positioning platform 45.

[0033] The heat-conducting column 43 on the heating base 41 is inserted into the bottom of the bimetallic brake drum 1, which efficiently conducts heat to the bimetallic brake drum 1, providing the required temperature conditions for its spinning process.

[0034] The positioning groove 42 ensures that the bimetallic brake drum 1 is accurately positioned on the heating base 41, guaranteeing processing stability.

[0035] More specifically, the drainage assembly 5 includes a guide pipe 51 rotatably connected to the lower end of the heating base 41. The heating base 41 has a guide hole 52 that communicates with the guide pipe 51 at its axial center. The guide pipe 51 extends inward toward the heat transfer cylinder 44, and a guide pipe opening and closing switch 55 is provided outward around the heat transfer cylinder 44.

[0036] In detail, a support step 53 is provided inside the heat transfer cylinder 44, and a flow receiving seat 54 with an open upper end is positioned on the support step 53. The lower end of the flow receiving seat 54 has a drain hole connected to an external flow pipe.

[0037] Waste liquid or excess material generated during processing can enter the guide pipe 51 through the guide hole 52 on the axis of the heating base 41.

[0038] Open the flow guide tube on / off switch 55, and the flow guide tube 51 will guide the waste liquid to the receiving seat 54 in the heat transfer cylinder 44. The waste liquid in the receiving seat 54 will be discharged through the lower drain hole connected to the external drain pipe, thus completing the drainage.

[0039] Preferably, the lower end of the inlet seat 54 extends inward toward the heat-conducting base 46 in a circumferential direction and there is no contact between the inlet seat 54 and the heat-conducting base 46 in a circumferential direction.

[0040] In summary, the principle of this embodiment is as follows: During processing, the bimetallic brake drum 1 is first heated by an external electric heating device to ensure that the inner circumference of the bimetallic brake drum 1 reaches the processing temperature. Then, molten iron is introduced into the sealing sleeve 35. The centrifugal motor drives the spinning centrifugal cylinder 31 to rotate, and the swirling blades 32 rotate synchronously and generate a swirling effect using centrifugal force. The swirling molten iron enters the inner circumference of the bimetallic brake drum 1 through the flow hole 24 of the linkage flange 21 to perform spinning processing on the inside of the bimetallic brake drum 1. This processing method can effectively reduce the inner wall thickness, reduce the volume, and save costs while ensuring that the performance of the bimetallic brake drum remains unchanged. After processing, the flow guide pipe on / off switch 55 is opened, and the flow guide pipe 51 guides the molten iron waste liquid to the receiving seat 54 in the heat transfer cylinder 44. The waste liquid in the receiving seat 54 is discharged through the lower drain hole connected to the external drain pipe, completing the drainage.

[0041] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0042] Although this document frequently uses terms such as bimetallic brake drum 1, spinning linkage structure 2, linkage flange 21, linkage hole 22, mounting hole 23, flow passage hole 24, centrifugal spinning assembly 3, spinning centrifugal cylinder 31, swirl blade 32, connecting flange 33, drive connection hole 34, sealing sleeve 35, heat conduction and diversion structure 4, heating base 41, positioning groove 42, heat conduction column 43, heat transfer cylinder 44, rotating positioning platform 45, heat conduction base 46, drainage assembly 5, guide pipe 51, guide hole 52, support step 53, flow receiving seat 54, guide pipe opening and closing switch 55, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A centrifugal spinning apparatus for a bimetallic brake drum, comprising a bimetallic brake drum (1), characterized in that, The upper end of the bimetallic brake drum (1) is connected to a centrifugal spinning assembly (3) through a spinning linkage structure (2), and the lower end of the bimetallic brake drum (1) is connected to a drainage assembly (5) through a heat-conducting and drainage structure (4).

2. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 1, characterized in that, The spinning linkage structure (2) includes a linkage flange (21) disposed on the upper end face of the bimetallic brake drum (1). The linkage flange (21) is provided with a plurality of linkage holes (22) in the circumferential direction, and the upper end face of the bimetallic brake drum (1) is provided with a plurality of mounting holes (23) corresponding to the linkage holes (22) in the circumferential direction.

3. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 2, characterized in that, The linkage flange (21) is provided with a flow hole (24) on its shaft, and the flow hole (24) is connected to the inner side of the bimetallic brake drum (1) in the circumferential direction.

4. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 2, characterized in that, The centrifugal spinning assembly (3) includes a spinning centrifugal cylinder (31), which is provided with a plurality of vertically inclined swirl blades (32) in the circumferential direction, and two adjacent swirl blades (32) are staggered.

5. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 4, characterized in that, The upper end face of the spun centrifuge cylinder (31) has a connecting flange (33), and the connecting flange (33) is provided with a drive connection hole (34) for connecting to the centrifuge motor; the spun centrifuge cylinder (31) is provided with a sealing sleeve (35) in the circumferential direction, the bottom of the sealing sleeve (35) is fixedly connected to the linkage flange (21), and the lower end of the spun centrifuge cylinder (31) is fixed on the linkage flange (21), and the spun centrifuge cylinder (31) is connected to the inner side of the bimetallic brake drum (1) in the circumferential direction through the flow hole (24).

6. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 1, characterized in that, The heat conduction and diversion structure (4) includes a heating base (41) disposed at the lower end of the bimetallic brake drum (1). The upper surface of the heating base (41) is provided with a positioning groove (42) into which the bimetallic brake drum (1) can be inserted. The positioning groove (42) is provided with several heat conduction columns (43) circumferentially arranged on the platform surface, and the heat conduction columns (43) are inserted into the bottom of the bimetallic brake drum (1).

7. The spinning centrifugal processing apparatus for a bimetallic brake drum according to claim 6, characterized in that, The heating base (41) is provided with a heat transfer cylinder (44) at its lower end. The heat transfer cylinder (44) is provided with a rotating positioning platform (45) on its upper circumferential inner side and its lower end face is circumferentially connected to the heat-conducting base (46). The heat-conducting base (46) is connected to an external electric heating device.

8. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 7, characterized in that, The drainage assembly (5) includes a guide pipe (51) rotatably connected to the lower end of the heating base (41). The heating base (41) has a guide hole (52) communicating with the guide pipe (51) at its axial center. The guide pipe (51) extends inward toward the heat transfer cylinder (44), and the heat transfer cylinder (44) has a guide pipe opening and closing switch (55) on the outer side of the circumference.

9. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 8, characterized in that, The heat transfer cylinder (44) is provided with a support step (53), and a flow receiving seat (54) with an open upper end is positioned on the support step (53). The flow receiving seat (54) has a drain hole at the lower end that is connected to an external drain pipe.

10. The centrifugal spinning apparatus for a bimetallic brake drum according to claim 8, characterized in that, The lower end of the receiving seat (54) extends toward the inner side of the heat-conducting base (46) in the circumferential direction, and there is no contact between the receiving seat (54) and the heat-conducting base (46) in the circumferential direction.

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