A compound MC nylon steel core wheel casting equipment

Abstract

The present invention discloses a composite MC nylon steel core wheel casting device, which includes a casting tank, a limiting cylinder, a cover plate and two occupying units. A cylinder is fixed to the bottom wall of the cavity; the output end of the first horizontal moving device is connected to the first lifting device, the output end of the first lifting device is connected to the first connecting plate, a first connecting rod is arranged on the first connecting plate, the bottom end of the first connecting rod is connected to the top wall of the limiting cylinder, a sliding rod driving device is fixed to the outer wall of the limiting cylinder, the output end of the sliding rod driving device is connected to a sliding rod, the sliding rod penetrates through the side wall of the limiting cylinder, and a feed hole is opened on the top wall of the limiting cylinder; the output end of the second horizontal moving device is connected to the second lifting device, the output end of the second lifting device is connected to the second connecting plate, a second connecting rod is arranged on the second connecting plate, and the bottom end of the second connecting rod is connected to the cover plate; the composite nylon wheel cast by this device has high strength, wear resistance, and stable cooperation with the bearing, reducing the vibration and noise during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of casting devices, and particularly relates to a composite MC nylon steel core wheel casting device. Background Art

[0002] Nylon is a new type of engineering plastic. Due to its good comprehensive performance, its status in engineering plastics has risen rapidly, becoming an important material with an increasing usage amount. Since nylon has excellent properties such as non-toxicity, light weight, and wear resistance, it is widely used to replace metals such as iron and copper in industrial fields such as machinery, chemical industry, instrumentation, and automobiles. The more prominent MC nylon can even directly replace metal products such as original copper, stainless steel, and aluminum alloy. In particular, making MC nylon into an MC nylon wheel for elevator transmission not only meets the industrial requirements for its performance, but also reduces the user cost and extends the service life.

[0003] Current nylon wheels include those without a metal bushing or with a metal bushing. For nylon wheels without a metal bushing, due to the characteristics of thermal expansion and contraction of the nylon material, after long-term use, relative displacement and slipping (commonly known as running outer ring) will occur between the bearing and the wheel hole, resulting in noise and unstable operation characteristics, affecting the normal use of the elevator; for nylon wheels with a metal bushing, the metal bushing and the nylon wheel are pressed into the wheel hole during later assembly, or fixed with keys and pins or with a hole retaining ring. This not only has a high cost, but also has insufficient connection firmness. Summary of the Invention

[0004] Aiming at the defects in the prior art, the present invention provides a composite MC nylon steel core wheel casting device. The composite nylon wheel cast by this device has high strength, wear resistance, and stable cooperation with the bearing, reducing the vibration and noise during operation.

[0005] A composite MC nylon steel core wheel casting device includes a casting tank, a limiting cylinder, a cover plate, and two positioning units. The casting tank has a cylindrical cavity with an open top. A cylinder is fixed to the bottom wall of the cavity, and the top of the cylinder is located below the top of the cavity. The cylinder is coaxially arranged with the cavity.

[0006] The top of the limiting cylinder is closed. The output end of the first horizontal moving device is connected to the first lifting device. The output end of the first lifting device is connected to the first connecting plate. A first connecting rod is arranged on the first connecting plate. The bottom end of the first connecting rod is connected to the top wall of the limiting cylinder. A sliding rod driving device is fixed to the outer wall of the limiting cylinder. The output end of the sliding rod driving device is connected to a sliding rod. The sliding rod penetrates the side wall of the limiting cylinder. The sliding rod is slidably and sealingly connected to the side wall of the limiting cylinder. The inner end of the sliding rod enters the inner cavity of the limiting cylinder. The sliding rod can stretch out of the inner cavity of the limiting cylinder and enter the side wall of the limiting cylinder. The limiting cylinder can move into the cavity. The limiting cylinder is coaxially arranged with the cylinder. The bottom wall of the limiting cylinder contacts the bottom wall of the cavity. There is a gap between the inner circumferential wall of the limiting cylinder and the circumferential wall of the cylinder. The top wall of the inner cavity of the limiting cylinder contacts the top wall of the cylinder. A feed hole is opened on the top wall of the limiting cylinder. A feed pipe is connected to the feed hole. The molten metal can be injected into the inner cavity of the limiting cylinder through the feed pipe;

[0007] The output end of the second horizontal moving device is connected to the second lifting device. The output end of the second lifting device is connected to the second connecting plate. A second connecting rod is arranged on the second connecting plate. The bottom end of the second connecting rod is connected to a cover plate. The cover plate can enter the cavity and completely close the cavity. The bottom wall of the cover plate can contact the top wall of the cylinder;

[0008] A positioning unit is arranged on the bottom wall of the cover plate, and another positioning unit is arranged on the bottom wall of the cavity. The positioning unit includes a plurality of positioning blocks. The plurality of positioning blocks in the positioning unit arranged on the cover plate are circumferentially distributed around the axis of the cover plate. The plurality of positioning blocks in the positioning unit arranged on the bottom wall of the cavity are circumferentially distributed around the axis of the cavity. There is a gap between the inner wall of the positioning blocks in the positioning unit arranged on the bottom wall of the cavity and the circumferential wall of the cylinder. There is a gap between the outer wall of the positioning blocks in the positioning unit arranged on the bottom wall of the cavity and the side wall of the cavity. When the bottom wall of the cover plate contacts the top wall of the cylinder, the two positioning units are coaxially arranged and there is a gap between the two positioning units.

[0009] Preferably, it further includes a local melting device. The local melting device includes a third horizontal moving device, a third lifting device, a third connecting plate, a motor, a connecting component and a ceramic heating pipe. The output end of the third horizontal moving device is connected to the third lifting device. The output end of the third lifting device is connected to the third connecting plate. The motor is fixed on the third connecting plate. The connecting component is connected to the output shaft of the motor. A ceramic heating pipe is fixed on the connecting component. When the output shaft of the motor is coaxially arranged with the cylinder and the ceramic heating pipe is located in the cavity, one end of the ceramic heating pipe contacts the outer circumferential wall of the cast metal bushing.

[0010] Preferably, the plurality of positioning blocks in the positioning unit are evenly distributed.

[0011] Preferably, a plurality of sliding rod driving devices are fixed to the outer wall of the limiting cylinder. The output end of each sliding rod driving device is connected to a sliding rod.

[0012] Preferably, a plurality of sliding rod driving devices are evenly distributed circumferentially around the limiting cylinder.

[0013] Preferably, the first horizontal moving device and the first lifting device are located on the right side of the casting ladle.

[0014] Preferably, the second horizontal moving device and the second lifting device are located on the left side of the casting ladle.

[0015] Preferably, the third horizontal moving device and the third lifting device are located on the rear side of the casting ladle.

[0016] The beneficial effects of the present invention are reflected in that the composite nylon wheel cast by this device is integrally cast and molded, without the need to be fixed with keys and pins or with hole retaining rings, and has strong firmness. The outer part of the cast composite nylon wheel is nylon, which has a protective effect on the steel wire rope during operation and is wear-resistant; the inner part is a metal bushing, which overcomes the phenomenon that the nylon wheel body has a large coefficient of thermal expansion, the bearing has a small coefficient of thermal expansion, and the loosening and relative slipping occur at the mating part of the bearing with a large temperature rise. Since the expansion coefficients of the metal bushing and the bearing are similar, their cooperation is stable, and the strength is high, reducing the vibration and noise during operation, improving the service life of the overall mechanism and the bearing, and can be used as a driving wheel in elevators or cranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a position distribution relationship diagram when two placeholder units cooperate;

[0020] Figure 3 is a schematic diagram of the overall structure of the composite nylon wheel.

[0021] In the attached drawings, 1 - metal bushing, 2 - inner nylon ring, 3 - outer nylon ring, 4 - middle annular plate, 5 - connecting plate, 6 - casting tank, 7 - cylinder, 8 - first horizontal moving device, 9 - first lifting device, 10 - first connecting plate, 11 - first connecting rod, 12 - limiting cylinder, 13 - sliding rod, 14 - sliding rod driving device, 15 - second horizontal moving device, 16 - second lifting device, 17 - second connecting plate, 18 - second connecting rod, 19 - cover plate, 20 - occupying block, 21 - third horizontal moving device, 22 - third lifting device, 23 - third connecting plate, 24 - motor, 25 - connecting component, 26 - ceramic heating tube. Detailed implementation mode

[0022] The embodiments of the technical solution of the present invention will be described in detail below with reference to the attached drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0023] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0024] Embodiment

[0025] As Figure 1 - Figure 2 shown, in this embodiment, a composite MC nylon steel core wheel casting device is provided, including a casting tank 6, a limiting cylinder 12, a cover plate 19 and two occupying units. The casting tank 6 has a cylindrical cavity inside, the top of the cavity is open, the cylinder 7 is fixed to the bottom wall of the cavity, the top of the cylinder 7 is located below the top of the cavity, and the cylinder 7 is coaxially arranged with the cavity;

[0026] The top of the limiting cylinder 12 is closed. The output end of the first horizontal moving device 8 is connected to the first lifting device 9, the output end of the first lifting device 9 is connected to the first connecting plate 10, the first connecting rod 11 is arranged on the first connecting plate 10, the bottom end of the first connecting rod 11 is connected to the top wall of the limiting cylinder 12, the outer wall of the limiting cylinder 12 is fixed with a sliding rod driving device 14, the output end of the sliding rod driving device 14 is connected with a sliding rod 13, the sliding rod 13 penetrates through the side wall of the limiting cylinder 12, the sliding rod 13 is slidably and sealingly connected with the side wall of the limiting cylinder 12, the inner end of the sliding rod 13 enters the inner cavity of the limiting cylinder 12, the sliding rod 13 can stretch out of the inner cavity of the limiting cylinder 12 and enter the side wall of the limiting cylinder 12, the limiting cylinder 12 can move into the cavity, the limiting cylinder 12 is coaxially arranged with the cylinder 7, the bottom wall of the limiting cylinder 12 contacts the bottom wall of the cavity, there is a gap between the inner circumferential wall of the limiting cylinder 12 and the circumferential wall of the cylinder 7, and a feeding hole is opened on the top wall of the limiting cylinder 12, and a feeding pipe is connected at the feeding hole, and the molten metal can be injected into the inner cavity of the limiting cylinder 12 through the feeding pipe;

[0027] The output end of the second horizontal moving device 15 is connected to the second lifting device 16. The output end of the second lifting device 16 is connected to the second connecting plate 17. A second connecting rod 18 is provided on the second connecting plate 17. The bottom end of the second connecting rod 18 is connected to a cover plate 19. The cover plate 19 can enter the cavity and completely close the cavity. The bottom wall of the cover plate 19 can contact the top wall of the cylinder 7.

[0028] One occupancy unit is arranged on the bottom wall of the cover plate 19, and the other occupancy unit is arranged on the bottom wall of the cavity. The occupancy unit includes a plurality of occupancy blocks 20. The plurality of occupancy blocks 20 in the occupancy unit arranged on the cover plate 19 are circumferentially distributed around the axis of the cover plate 19. The plurality of occupancy blocks 20 in the occupancy unit arranged on the bottom wall of the cavity are circumferentially distributed around the axis of the cavity. There is a gap between the inner wall of the occupancy block 20 in the occupancy unit arranged on the bottom wall of the cavity and the circumferential wall of the cylinder 7. There is a gap between the outer wall of the occupancy block 20 in the occupancy unit arranged on the bottom wall of the cavity and the side wall of the cavity. When the bottom wall of the cover plate 19 contacts the top wall of the cylinder 7, the two occupancy units are coaxially arranged and there is a gap between the two occupancy units.

[0029] The specifically cast composite nylon wheel is as Figure 3 shown, and includes a metal bushing 1, an inner nylon ring 2, an outer nylon ring 3, a middle annular plate 4 and two connecting units. The inner circumferential wall of the inner nylon ring 2 is connected to the outer circumferential wall of the metal bushing 1. The inner circumferential wall of the middle annular plate 4 is connected to the outer circumferential wall of the inner nylon ring 2. The outer circumferential wall of the middle annular plate 4 is connected to the inner circumferential wall of the outer nylon ring 3. The two connecting units are respectively located above and below the middle annular plate 4. The connecting unit includes a plurality of connecting plates 5. The plurality of connecting plates 5 are circumferentially distributed around the inner nylon ring 2. One end of the connecting plate 5 is connected to the outer circumferential wall of the inner nylon ring 2, and the other end of the connecting plate 5 is connected to the inner circumferential wall of the outer nylon ring 3. The bottom wall of the connecting plate 5 located above the middle annular plate 4 is connected to the top wall of the middle annular plate 4. The top wall of the connecting plate 5 located below the middle annular plate 4 is connected to the bottom wall of the middle annular plate 4.

[0030] The specific casting process is as follows: control the first horizontal moving device 8 and the first lifting device 9 so that the limiting cylinder 12 enters the cavity, the bottom wall of the limiting cylinder 12 contacts the bottom wall of the cavity, and the inner top wall of the limiting cylinder 12 contacts the top wall of the cylinder 7. At this time, the limiting cylinder 12 is coaxially arranged with the cylinder 7, and then control the sliding rod driving device so that the inner end of the sliding rod 13 enters the inner cavity of the limiting cylinder 12. The staff injects a specific amount of molten metal according to the volume between the limiting cylinder 12 and the cylinder 7 minus the volume occupied by the sliding rod 13, and waits for it to cool and form. In this way, the metal bushing 1 in the shape of a cylinder is cast, and then the sliding rod 13 is separated from the inner cavity of the limiting cylinder 12 and enters the inside of the side wall of the limiting cylinder 12, and then the limiting cylinder 12 is lifted upward, so that the limiting cylinder 12 is separated from the metal bushing 1, and the outer wall of the metal bushing 1 forms a receiving hole due to the separation of the sliding rod 13. Then the staff injects a specific amount of nylon melt into the cavity, and then drives the second horizontal moving device 15 and the second lifting device 16, so that the cover plate 19 moves to completely close the cavity, and the bottom wall of the cover plate 19 contacts the top wall of the cylinder 7, and the two placeholder units cooperate to form a composite nylon wheel of the above shape. Since the inner nylon ring 2 is sleeved on the metal bushing 1, and the nylon melt will enter the receiving hole and solidify, the stability and firmness of the connection between the inner nylon ring 2 and the metal bushing 1 are guaranteed. In the specific use process, there is a gap between the placeholder block 20 and the cast metal bushing 1.

[0031] This composite nylon wheel is fully integrated by integral casting, and does not require keys and pins or holes and retaining rings to fix the metal bushing 1 and the inner nylon ring 2. It has strong firmness. The outer part of the cast composite nylon wheel is nylon, which protects the wire rope during operation and is wear-resistant; the inner part is the metal bushing 1, which overcomes the large expansion coefficient of the nylon wheel body, the small expansion coefficient of the bearing, and the large temperature rise, which causes the loosening and relative slippage of the matching part of the bearing and the nylon. Since the expansion coefficient of the metal bushing 1 is similar to that of the bearing, the matching is stable and the strength is high, which reduces the vibration and noise during operation, and increases the life of the overall mechanism and the bearing. It can be used for the transmission wheel in elevators or cranes.

[0032] In this embodiment, a plurality of sliding rod driving devices 14 are fixed to the outer wall of the limiting cylinder 12, and the output end of each sliding rod driving device 14 is connected to the sliding rod 13, and the plurality of sliding rod driving devices 14 are evenly distributed around the circumference of the limiting cylinder 12. In this way, a plurality of receiving holes can be formed on the outer wall of the metal bushing 1 to ensure the stability of the connection between the inner nylon ring 2 and the metal bushing 1 after casting.

[0033] This embodiment further includes a local melting device, which includes a third horizontal moving device 21, a third lifting device 22, a third connecting plate 23, a motor 24, a connecting component 25, and a ceramic heating tube 26. The output end of the third horizontal moving device 21 is connected to the third lifting device 22, and the output end of the third lifting device 22 is connected to the third connecting plate 23. The motor 24 is fixed on the third connecting plate 23. The connecting component 25 is connected to the output shaft of the motor 24, and the ceramic heating tube 26 is fixed on the connecting component 25. When the output shaft of the motor 24 is coaxially arranged with the cylinder 7 and the ceramic heating tube 26 is located in the cavity, one end of the ceramic heating tube 26 contacts the outer circumferential wall of the cast metal bushing 1.

[0034] In this embodiment, a local melting device is provided. During the specific casting process, after injecting the nylon melt into the cavity and before the cover plate 19 is pressed down, the third horizontal moving device 21 and the third lifting device 22 are controlled to make the ceramic heating tube 26 enter the cavity and contact the cast metal bushing 1, and then heated to a high temperature to melt the contact part between the ceramic heating tube 26 and the metal bushing 1. By controlling the third horizontal moving device 21, the third lifting device 22, and the motor 24, multiple contact parts between the ceramic heating tube 26 and the metal bushing 1 can be adjusted. After the melting points on the outer wall of the metal bushing 1 melt, they will be mixed and solidified with the nylon melt. In this way, after the nylon melt solidifies, the multiple contact parts between the inner nylon ring 2 and the metal bushing 1 are mixed and solidified into one body, making the connection between the inner nylon ring 2 and the metal bushing 1 more firm. After heating and melting the metal bushing 1, the ceramic heating tube 26 needs to move above the cavity to dry the melt droplets, and then the cover plate 19 is pressed down.

[0035] The first horizontal moving device 8, the second horizontal moving device 15, and the third horizontal moving device 21 cooperate to ensure the coordinated operation of each component.

[0036] In this embodiment, the multiple positioning blocks 20 in the positioning unit are evenly distributed.

[0037] In this embodiment, the first horizontal moving device 8 and the first lifting device 9 are located on the right side of the casting tank 6.

[0038] In this embodiment, the second horizontal moving device 15 and the second lifting device 16 are located on the left side of the casting tank 6.

[0039] In this embodiment, the third horizontal moving device 21 and the third lifting device 22 are located on the rear side of the casting tank 6.

[0040] In this embodiment, the nylon is MC nylon and the metal bushing 1 is made of steel.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A composite MC nylon steel core wheel casting device, characterized in that, it includes a casting tank (6), a limiting cylinder (12), a cover plate (19) and two positioning units. The casting tank (6) has a cylindrical cavity with an open top end. A cylinder (7) is fixed to the bottom wall of the cavity. The top end of the cylinder (7) is located below the top end of the cavity. The cylinder (7) is coaxially arranged with the cavity; The top end of the limiting cylinder (12) is closed. The output end of the first horizontal moving device (8) is connected to the first lifting device (9). The output end of the first lifting device (9) is connected to the first connecting plate (10). A first connecting rod (11) is arranged on the first connecting plate (10). The bottom end of the first connecting rod (11) is connected to the top wall of the limiting cylinder (12). A sliding rod driving device (14) is fixed to the outer wall of the limiting cylinder (12). The output end of the sliding rod driving device (14) is connected to a sliding rod (13). The sliding rod (13) penetrates through the side wall of the limiting cylinder (12). The sliding rod (13) is slidably and sealingly connected to the side wall of the limiting cylinder (12). The inner end of the sliding rod (13) enters the inner cavity of the limiting cylinder (12). The sliding rod (13) can stretch and retract out of the inner cavity of the limiting cylinder (12) and enter the side wall of the limiting cylinder (12). The limiting cylinder (12) can move into the cavity. The limiting cylinder (12) is coaxially arranged with the cylinder (7). The bottom wall of the limiting cylinder (12) contacts the bottom wall of the cavity. There is a gap between the inner circumferential wall of the limiting cylinder (12) and the circumferential wall of the cylinder (7). The top wall of the limiting cylinder (12) contacts the top wall of the cylinder (7). An inlet hole is opened on the top wall of the limiting cylinder (12). A feed pipe is connected to the inlet hole. The molten metal can be injected into the inner cavity of the limiting cylinder (12) through the feed pipe; The output end of the second horizontal moving device (15) is connected to the second lifting device (16). The output end of the second lifting device (16) is connected to the second connecting plate (17). A second connecting rod (18) is arranged on the second connecting plate (17). The bottom end of the second connecting rod (18) is connected to a cover plate (19). The cover plate (19) can enter the cavity and completely seal the cavity. The bottom wall of the cover plate (19) can contact the top wall of the cylinder (7); One positioning unit is arranged on the bottom wall of the cover plate (19), and the other positioning unit is arranged on the bottom wall of the cavity. The positioning unit includes a plurality of positioning blocks (20). The plurality of positioning blocks (20) in the positioning unit arranged on the cover plate (19) are circumferentially distributed around the axis of the cover plate (19). The plurality of positioning blocks (20) in the positioning unit arranged on the bottom wall of the cavity are circumferentially distributed around the axis of the cavity. There is a gap between the inner wall of the positioning block (20) in the positioning unit arranged on the bottom wall of the cavity and the circumferential wall of the cylinder (7). There is a gap between the outer wall of the positioning block (20) in the positioning unit arranged on the bottom wall of the cavity and the side wall of the cavity. When the bottom wall of the cover plate (19) contacts the top wall of the cylinder (7), the two positioning units are coaxially arranged and there is a gap between the two positioning units; It further includes a local melting device, which includes a third horizontal moving device (21), a third lifting device (22), a third connecting plate (23), a motor (24), a connecting component (25) and a ceramic heating tube (26). The output end of the third horizontal moving device (21) is connected to the third lifting device (22), and the output end of the third lifting device (22) is connected to the third connecting plate (23). The motor (24) is fixed on the third connecting plate (23). The connecting component (25) is connected to the output shaft of the motor (24). The ceramic heating tube (26) is fixed on the connecting component (25). When the output shaft of the motor (24) is coaxially arranged with the cylinder (7) and the ceramic heating tube (26) is located in the cavity, one end of the ceramic heating tube (26) contacts the outer circumferential wall of the cast metal bushing (1). A plurality of sliding rod driving devices (14) are fixed on the outer wall of the limiting cylinder (12), and the output end of each sliding rod driving device (14) is connected to a sliding rod (13).

2. A composite MC nylon steel core wheel casting device according to claim 1, characterized in that, The multiple positioning blocks (20) in the positioning unit are evenly distributed.

3. A composite MC nylon steel core wheel casting device according to claim 1, characterized in that, The multiple sliding rod driving devices (14) are evenly distributed around the circumference of the limiting cylinder (12).

4. A composite MC nylon steel core wheel casting device according to claim 1, characterized in that, The first horizontal moving device (8) and the first lifting device (9) are located on the right side of the casting tank (6).

5. A composite MC nylon steel core wheel casting device according to claim 4, characterized in that, The second horizontal moving device (15) and the second lifting device (16) are located on the left side of the casting tank (6).

6. A composite MC nylon steel core wheel casting device according to claim 5, characterized in that, The third horizontal moving device (21) and the third lifting device (22) are located on the rear side of the casting tank (6).

Images