A lifting mechanism for a casting apparatus

Abstract

The utility model relates to alloy casting technical field, concretely relates to a kind of lifting mechanism for casting device, including lifting sleeve frame, the driving device of driving the lifting sleeve frame ascending or descending, and the fixed sleeve frame of the fixed driving device;Horizontal through-hole for casting pipe to pass through is provided on the lifting sleeve frame, the casting pipe can slide transversely relative to the horizontal through-hole;The telescopic end of the driving device is connected with the lifting sleeve frame by penetrating out fixed sleeve frame, and the fixed end of the driving device is arranged on the fixed base in the fixed sleeve frame;The side of the fixed sleeve frame towards casting ladle is provided with heat insulation plate, and the heat insulation plate includes at least one layer of heat insulation core material.The utility model places lifting mechanism side and additionally adds heat insulation protection, realizes casting pipe accurate lifting and rotation simultaneously, effectively insulates high temperature, extends force arm, and reduces equipment cost and maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the field of alloy casting technology, specifically to a lifting mechanism for a casting device. Background Technology

[0002] The casting unit is a key piece of equipment in the lead alloy smelting industry for automated casting. It mainly consists of a rotary drive, a casting jar, a lifting mechanism, and a control system. The lifting mechanism controls the raising and lowering of the lead outlet of the casting jar to switch between casting and recycling states; its performance directly affects the stability and efficiency of production. Figure 1 As shown, the currently used lifting mechanism mainly consists of a cylinder installed at the rear of the casting barrel and a set of linkage mechanisms. The cylinder uses the outriggers on both sides of the casting barrel as fulcrums and drives the casting barrel to complete the tilting action through its extension and retraction movement.

[0003] The existing lifting mechanisms with the above-mentioned structural forms have the following problems: 1. Unreasonable structural layout and bulky equipment: Due to the cylinder's installation position being too close to the casting tank's fulcrum, the lever arm of the driving force is too short. To obtain sufficient output torque, a larger cylinder must be selected, which also increases its size. This not only increases manufacturing costs but also necessitates a longer design for the cylinder's supporting base plate, making the entire casting device less compact and occupying excessive production space.

[0004] Second, severe heat impact and short lifespan of core components: The cylinder is located adjacent to a high-temperature casting vat, and during operation, the radiant and conductive heat transferred from the vat to the cylinder through the connecting rod is significant. The cylinder operates in a high-temperature environment for extended periods, making its seals prone to aging and failure, leading to cylinder malfunction or damage. Its average lifespan is only about half a month. Frequent replacement and maintenance not only result in direct economic losses from spare parts but also cause unplanned downtime, severely impacting production continuity.

[0005] Therefore, there is an urgent need for a lifting mechanism with a reasonable structural design and long service life that can be used in casting equipment. Summary of the Invention

[0006] To address the problems of short lever arm, large space occupation, and short service life in existing structures, this utility model provides a lifting mechanism for casting devices. By placing the lifting mechanism on the side and adding heat insulation protection, it can effectively isolate high temperature while achieving precise lifting and rotation of the casting pipe, extending the lever arm, and reducing equipment cost and maintenance frequency.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A lifting mechanism for a casting device, the casting device including a casting barrel, a casting pipe extending outwardly connected to one side of the casting barrel, a rotary drive device at the bottom of the casting barrel for driving the casting barrel to rotate back and forth, the casting device casting a mold on a frame, the lifting mechanism including a lifting sleeve movably mounted on the casting pipe, a drive device for driving the lifting sleeve to rise or fall, and a fixed sleeve for fixing the drive device. The lifting sleeve is provided with a transverse through hole for the casting pipe to pass through, and the casting pipe can slide laterally relative to the transverse through hole; the telescopic end of the drive device extends out of the fixed sleeve and connects to the lifting sleeve, and the fixed end of the drive device is set on the fixed base inside the fixed sleeve. The fixed sleeve is provided with a heat insulation plate on the side facing the casting barrel, and the heat insulation plate includes at least one layer of heat insulation core material. The lifting sleeve drives the casting pipe to rise and fall, while allowing the casting pipe to slide laterally in its internal transverse through-hole to accommodate rotational movement.

[0008] Furthermore, the lifting frame includes a fixed base plate, the bottom end of which is connected to the telescopic end of the drive device. A first movable plate and a second movable plate are arranged parallel above the fixed base plate, and a vertical plate connects the first and second movable plates to the fixed base plate. The positions of the first and second movable plates on the vertical plate are adjustable to accommodate casting pipes of different diameters.

[0009] Furthermore, two parallel upright plates are vertically arranged on the fixed base plate, each upright plate having an elongated oval hole. Matching circular holes are formed at both ends of the first and second movable plates. The positions of the first and second movable plates on the upright plates can be adjusted using bolts. The space enclosed by the two upright plates and the first and second movable plates forms the transverse through hole.

[0010] Furthermore, the bottom of the first movable plate and the top of the second movable plate are arc-shaped. This is to reduce the friction between the casting pipe and the lifting sleeve when the pipe moves laterally.

[0011] Furthermore, multiple guide rods are provided between the fixed sleeve and the lifting sleeve. One end of each guide rod is fixedly connected to the lifting sleeve, and the other end is slidably connected to the fixed sleeve via a linear bearing. This is used to improve the smoothness and accuracy of the lifting movement.

[0012] Furthermore, the heat insulation plate is fixedly connected to the lifting sleeve and slidably disposed relative to the fixed sleeve. Both the fixed end and the telescopic end of the drive device are placed in a relatively low-temperature region.

[0013] Furthermore, the heat insulation plate has a built-in receiving cavity filled with heat-insulating rock wool, and the top plate and side plates of the heat insulation plate extend to one side and cover the outside of the fixed sleeve. The heat insulation plate is used to insulate against the thermal radiation heat from the casting barrel.

[0014] Furthermore, the top plate is fixed to the bottom of the lifting frame, and the two are connected by bolts. The edge of the top plate is provided with a U-shaped groove that matches the bolts. The heat insulation plate and the lifting frame can be quickly assembled and disassembled simply by loosening the nuts on the bolts.

[0015] The beneficial effects of this utility model through the above technical solution are as follows: This invention keeps the driving part of the lifting mechanism away from the high-temperature casting tank and uses a heat insulation plate for physical isolation, forming an effective heat barrier, reducing the heat transferred to the driving device, fundamentally extending its service life, greatly reducing the maintenance frequency and spare parts replacement cost, and improving the reliability and economy of equipment operation.

[0016] This utility model is equipped with a lifting sleeve, a drive device, and a fixed sleeve. While achieving precise lifting and rotation of the casting pipe, it increases the lever arm of the drive device, thereby allowing the use of smaller drive components with shorter strokes. This not only reduces the manufacturing cost of the equipment but also makes the overall structure more compact and saves valuable installation space. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the lifting mechanism of the original casting device; Figure 2 This is a schematic diagram of the installation position of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a structural schematic diagram of the lifting sleeve and the fixed sleeve of this utility model; Figure 5 This is a schematic diagram of the structure of the heat insulation board of this utility model; The following are the labels in the attached diagram: 1 is the casting barrel, 2 is the casting pipe, 3 is the rotary drive device, 4 is the lifting sleeve, 41 is the transverse through hole, 42 is the fixed base plate, 43 is the first movable plate, 44 is the second movable plate, 45 is the vertical plate, 5 is the drive device, 6 is the fixed sleeve, 61 is the fixed base, 7 is the heat insulation plate, 71 is the receiving cavity, 72 is the top plate, 73 is the side plate, 9 is the guide rod, and 10 is the linear bearing. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 2-5As shown, this embodiment provides a lifting mechanism for a casting device. The lifting mechanism is fixed to the side of the ingot casting machine frame, and the casting device casts the mold on the frame. The casting device includes a casting barrel 1, with an outwardly extending casting pipe 2 connected to one side of the casting barrel 1. A rotary drive device 3 is provided at the bottom of the casting barrel 1, which drives the casting barrel 1 to rotate back and forth. Figures 1-2 As shown, the casting barrel 1 is rotatably mounted on a support plate above the rotary drive device 3, and the tilt angle between the casting pipe 2 and the horizontal plane is changed by a lifting mechanism. The casting device can refer to the casting device for a lead alloy ingot casting machine described in publication number CN118595429A, and the specific structure will not be described in detail here.

[0019] The lifting mechanism includes a lifting sleeve 4 movably mounted on the casting pipe 2, a driving device 5 for driving the lifting sleeve 4 to rise or fall, and a fixing sleeve 6 for fixing the driving device 5; a heat insulation plate 7 is provided on the side of the fixing sleeve 6 facing the casting barrel 1. The driving device 5 is a motor, and the fixing sleeve 6 is fixed to the side of the ingot casting machine frame, which is not shown in the figure. The heat insulation plate 7 contains at least one layer of heat insulation core material.

[0020] like Figure 4 As shown, the lifting sleeve 4 is provided with a transverse through hole 41 for the casting pipe 2 to pass through. The transverse through hole 41 is square and is surrounded by four strip plates. The casting pipe 2 can slide laterally relative to the transverse through hole 41. The lifting sleeve 4 drives the casting pipe 2 to rise and fall, while allowing the casting pipe 2 to slide laterally in the transverse through hole 41 inside it to adapt to the rotational movement.

[0021] Specifically, the lifting sleeve 4 includes a fixed base plate 42, which is a rectangular plate. The bottom end of the fixed base plate 42 is connected to the telescopic end of the driving device 5. A first movable plate 43 and a second movable plate 44 are arranged parallel above the fixed base plate 42. A vertical plate 45 connects the first movable plate 43, the second movable plate 44, and the fixed base plate 42. The positions of the first movable plate 43 and the second movable plate 44 on the vertical plate 45 are adjustable to accommodate casting pipes 2 of different diameters.

[0022] Specifically, two parallel upright plates 45 are vertically arranged on the fixed base plate 42. The upright plates 45 are rectangular and have elongated holes running from top to bottom. The first movable plate 43 and the second movable plate 44 have matching round holes at both ends. Bolts are passed through the round holes and elongated holes in sequence to adjust and fix the distance between the first movable plate 43 and the second movable plate 44.

[0023] To reduce the friction between the casting pipe 2 and the transverse through hole 41, the bottom of the first movable plate 43 and the top of the second movable plate 44 are arc-shaped. In practical applications, the first movable plate 43, the second movable plate 44, the vertical plate 45, and the fixed base plate 42 are all steel plates. Round steel bars can be welded to the bottom of the first movable plate 43 and the top of the second movable plate 44 to form an arc-shaped surface.

[0024] The telescopic end of the drive device 5 extends through the top plate of the fixed sleeve 6 and connects to the lifting sleeve 4. The fixed end of the drive device 5 is set on the fixed base 61 inside the fixed sleeve 6. When the drive device 5 is a cylinder, the telescopic end of the motor is fixedly connected to the fixed base plate 42 of the lifting sleeve 4, and the fixed end of the motor is fixed on the fixed base 61 of the fixed sleeve 6.

[0025] Multiple guide rods 9 are provided between the fixed sleeve 6 and the lifting sleeve 4. One end of each guide rod 9 is fixedly connected to the lifting sleeve 4, and the other end is slidably connected to the fixed sleeve 6 via a linear bearing 10. In one possible implementation, two guide rods 9 are provided, symmetrically arranged along the axis of the telescopic end of the drive device 5. The design of the guide rods 9 and the linear bearing improves the smoothness and accuracy of the lifting motion, and significantly improves the stress distribution, transmitting and dispersing any lateral forces or torques to the robust fixed sleeve 6 via the guide rods 9, thus extending the equipment's lifespan.

[0026] Preferably, the heat insulation plate 7 is fixedly connected to the lifting sleeve 4 and slidably disposed relative to the fixed sleeve 6. This allows both the fixed end and the telescopic end of the drive device 5 to be placed within a relatively low-temperature region isolated by the heat insulation plate 7 and the fixed sleeve 6, thereby significantly reducing the operating temperature of the drive device 5. This effectively avoids problems such as seal aging, cylinder deformation, and malfunction caused by high temperatures, greatly extending its service life.

[0027] As one possible implementation, the heat insulation plate 7 has a built-in receiving cavity 71, which is filled with heat insulation rock wool. The loose and interwoven porous fiber structure inside the cavity isolates the radiation and conduction path of heat in the casting barrel 1. The top plate 72 and the side plates 73 on both sides of the heat insulation plate 7 extend to one side and cover the outside of the fixed sleeve 6 to form a heat barrier, blocking most of the radiant heat as much as possible.

[0028] The top plate 72 is fixed to the bottom of the lifting sleeve 4, and the two are connected by bolts. The edge of the top plate 72 is provided with a U-shaped groove that matches the bolts. The fixed base plate 42 is provided with a circular hole that matches the U-shaped groove. The bolt passes through the circular hole and is connected to the nut in the U-shaped groove. By simply loosening the nut, the heat insulation plate 7 and the lifting sleeve 4 can be quickly disassembled and assembled. On the one hand, this facilitates later maintenance and replacement. On the other hand, the cooperation between the U-shaped groove and the bolt provides space for the heat insulation plate 7 to expand under heat, thus improving the long-term reliability of the equipment.

[0029] In use, the lifting mechanism is fixed to the side of the casting machine frame by the fixed sleeve 6. According to the actual diameter of the casting pipe 2, the positions of the first movable plate 43 and the second movable plate 44 are adjusted so that an appropriate gap is formed between the arc-shaped inner surface and the casting pipe 2, and then the bolts are tightened again.

[0030] At the start of the casting operation, the rotary drive device 3 drives the casting barrel 1 to rotate and moves the casting pipe 2 laterally within the transverse through hole 41 to adjust the casting position. The drive device 5 drives the lifting sleeve 4 to move up and down to adjust the casting height. During this process, the cooperation between the guide rod 9 and the linear bearing 10 ensures the vertical accuracy and stability of the lifting movement. The heat insulation plate 7 isolates the high-temperature radiation of the casting barrel 1, providing a relatively low-temperature and reliable working environment for the core components such as the drive device 5.

[0031] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A lifting mechanism for a casting apparatus, the casting apparatus comprising a casting barrel (1), a casting pipe (2) extending outwardly connected to one side of the casting barrel (1), and a rotary drive device (3) provided at the bottom of the casting barrel (1), the rotary drive device (3) being used to drive the casting barrel (1) to rotate back and forth, characterized in that, The lifting mechanism includes a lifting sleeve (4) movably mounted on the casting pipe (2), a driving device (5) for driving the lifting sleeve (4) to rise or fall, and a fixing sleeve (6) for fixing the driving device (5). The lifting sleeve (4) is provided with a transverse through hole (41) through which the casting pipe (2) passes, and the casting pipe (2) can slide laterally relative to the transverse through hole (41); the telescopic end of the driving device (5) passes through the fixed sleeve (6) and connects to the lifting sleeve (4), and the fixed end of the driving device (5) is provided on the fixed base (61) inside the fixed sleeve (6). The fixed sleeve (6) is provided with a heat insulation plate (7) on the side facing the casting barrel (1), and the heat insulation plate (7) includes at least one layer of heat insulation core material.

2. The lifting mechanism for a casting apparatus according to claim 1, characterized in that, The lifting frame (4) includes a fixed base plate (42), the bottom end of which is connected to the telescopic end of the drive device (5). A first movable plate (43) and a second movable plate (44) are arranged parallel above the fixed base plate (42), and a vertical plate (45) is connected between the first movable plate (43), the second movable plate (44) and the fixed base plate (42).

3. A lifting mechanism for a casting apparatus according to claim 2, characterized in that, Two parallel upright plates (45) are vertically arranged on the fixed base plate (42). The upright plates (45) have elongated holes. The first movable plate (43) and the second movable plate (44) have matching circular holes at both ends.

4. A lifting mechanism for a casting apparatus according to claim 2, characterized in that, The bottom of the first movable plate (43) and the top of the second movable plate (44) are arc-shaped.

5. A lifting mechanism for a casting apparatus according to claim 1, characterized in that, Multiple guide rods (9) are provided between the fixed sleeve (6) and the lifting sleeve (4). One end of the guide rod (9) is fixedly connected to the lifting sleeve (4), and the other end is slidably connected to the fixed sleeve (6) through a linear bearing (10).

6. A lifting mechanism for a casting apparatus according to claim 1, characterized in that, The heat insulation plate (7) is fixedly connected to the lifting sleeve (4) and is slidably arranged relative to the fixed sleeve (6).

7. A lifting mechanism for a casting apparatus according to claim 1, characterized in that, The heat insulation board (7) has a built-in cavity (71) filled with heat insulation rock wool. The top plate (72) and the side plates (73) on both sides of the heat insulation board (7) extend to one side and cover the outside of the fixed sleeve (6).

8. A lifting mechanism for a casting apparatus according to claim 7, characterized in that, The top plate (72) is fixed to the bottom of the lifting sleeve (4), and the two are connected by bolts. The edge of the top plate (72) is provided with a U-shaped groove that matches the bolts.

Images