Graphite crucible tunnel kiln production line loading and unloading system

Abstract

The invention belongs to the field of graphite crucible production equipment, and particularly relates to a graphite crucible tunnel kiln production line loading and unloading system which comprises a car dumper arranged at a dumping station, a graphite crucible is placed in a compartment matched with the car dumper, and the unloading system comprises a scraping assembly located below the car dumper. The scraping assembly comprises a lifting table, a rotating shaft and a set of scraping knives, a fixing sleeve is arranged on the lifting table, a set of lifting pins are arranged on the fixing sleeve in an array mode, springs are arranged between the lifting pins and the fixing sleeve, the rotating shaft is arranged in the fixing sleeve in a sleeved mode and is in running fit with the fixing sleeve, and the scraping knives are arc-shaped elastic pieces; the scraping knives are installed on the rotating shaft and sequentially pass through the overhanging ends of the lifting pins along with rotation of the rotating shaft, the scraping knives scrape the inner wall of the graphite crucible, gaps between the scraping knives form a discharging channel, the loading and unloading system can scrape and clean graphite negative electrode powder adhering to the inner wall of the graphite crucible, and waste of the graphite negative electrode powder is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the field of graphite crucible production equipment, and in particular relates to a graphite crucible tunnel kiln production line loading and unloading system. Background Art

[0002] In the tunnel kiln production line of graphite crucible, the raw materials are pressed into the body of graphite crucible by the mold, and then the body of graphite crucible is fired. After firing, it can be taken out of the kiln for processing to obtain the finished graphite crucible. In order to improve work efficiency and save fuel, when firing the graphite crucible, the raw materials of graphite negative electrode powder are usually added to the body of graphite crucible and fired together. After the graphite crucible is fired, the graphite negative electrode powder is taken out, so as to make full use of the firing time of the graphite crucible. However, the inner wall of the graphite crucible is relatively rough, and the graphite negative electrode powder is easy to adhere to the inner wall of the graphite crucible. After the graphite crucible is fired, it passes through the dumping station, and the adhered graphite negative electrode powder is not completely dumped. When the inner wall of the graphite crucible is processed and trimmed later, the adhered graphite negative electrode powder is cut as waste, resulting in waste of graphite negative electrode powder. Summary of the invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a loading and unloading system for a graphite crucible tunnel kiln production line, which can fully scrape and clean the graphite negative electrode powder adhered to the inner wall of the graphite crucible without causing cutting of the graphite crucible, thereby effectively reducing the waste of graphite negative electrode powder.

[0004] The specific technical solution adopted by the present invention is: A loading and unloading system for a graphite crucible tunnel kiln production line comprises a tipping machine arranged at a dumping station, the tipping machine has a turning angle of 180°, and a graphite crucible is placed in a compartment matched with the tipping machine. The key point is that the unloading system also comprises a scraper assembly located below the tipping machine, the scraper assembly comprises a lifting platform, a rotating shaft and a group of scraper knives, a fixed sleeve is arranged on the lifting platform, a group of ejector pins are arranged in an array on the fixed sleeve, a spring is arranged between the ejector pins and the fixed sleeve, the rotating shaft is sleeved in the fixed sleeve and forms a rotational fit with the fixed sleeve, the scraper knife is a cantilevered arc-shaped spring piece, the scraper knife is mounted on the rotating shaft and passes through the cantilevered end of the ejector pin in sequence as the rotating shaft rotates, the scraper knife scrapes the inner wall of the graphite crucible, and the gap between the scraper knives forms a material dropping channel.

[0005] The upper end of the graphite crucible is higher than the upper end of the compartment, a group of pairs of arc-shaped clamps are horizontally arranged on the side wall of the tipping machine, and a first pressing plate is also arranged on the tipping machine. The arc-shaped clamps are used to position and clamp the graphite crucible, and the first pressing plate is used to press down and fix the graphite crucible with the help of a hydraulic telescopic rod, and the end of the first pressing plate is located above the side wall of the graphite crucible.

[0006] The overhanging end of the ejector pin is provided with a rugby-surface-shaped compacting sheet, and the scraper passes through the compacting sheet in sequence and approaches the inner wall of the graphite crucible with the help of the thrust of the compacting sheet.

[0007] The gap between the compacting sheets is smaller than the width of the scraper.

[0008] The pin body of the ejector pin is provided with a convex edge, the fixed sleeve is provided with a stepped hole matching the pin body and the convex edge, the convex edge and the stepped hole are slidingly arranged, the spring is arranged in the stepped hole and sleeved on the pin body, and the two ends of the spring are respectively connected to the convex edge and the step surface of the stepped hole.

[0009] An extended spring piece is cantilevered on the blade entry side of the scraper, and the edge of the extended spring piece is arranged in a cone or arc shape.

[0010] A transmission wheel is arranged at the lower end of the rotating shaft, a motor is arranged on the lifting platform, and the rotating shaft is connected to the power output shaft of the motor by means of the transmission wheel.

[0011] The rotating shaft is provided with a discharge hole which is parallel to its axial direction.

[0012] The beneficial effects of the present invention are: The present invention adds a scraping component to the dumping station, and the scraping knife scrapes the inner wall of the graphite crucible by rotating the rotating shaft, so that the graphite negative electrode powder adhering to the inner wall of the graphite crucible can fall off, which is convenient for recycling the graphite negative electrode powder. It is avoided that when the graphite crucible directly reaches the trimming station from the dumping station, the trimming station trims the inner wall of the graphite crucible, causing the graphite negative electrode powder to mix with the residual material of the graphite crucible, making it difficult to recycle the graphite negative electrode powder. The present invention realizes the full recycling of the graphite negative electrode powder adhering to the inner wall of the graphite crucible. The graphite crucible is axially positioned by the arc-shaped clamping jaws, and the graphite crucible is pressed down on the tipping machine by the first pressing plate. The arc-shaped clamping jaws and the first pressing plate work together to fix the graphite crucible on the tipping machine, so that the scraping assembly can smoothly enter the graphite crucible for scraping; The ejector pins are arranged in a circular array along the axis of the fixed sleeve, and a rugby-shaped compacting sheet is provided at the overhanging end of the ejector pin. The scraper is an arc-shaped spring sheet. The rotating shaft is sleeved in the fixed sleeve, and the rotating shaft drives the scraper to pass through the compacting sheet in sequence, so that the compacting sheet provides pressure to the scraper under the action of the spring, so that the scraper can smoothly scrape off the graphite negative electrode powder on the inner wall of the graphite crucible, and under the action of the elastic performance of the spring, the scraper will not form a hard scratch on the inner wall of the graphite crucible, and will not cause the graphite negative electrode powder to mix with the debris of the graphite crucible; The arc-shaped spring piece can be expanded along with the extension length of the compacting piece to adapt to the scraping of graphite negative electrode powder with different adhesion thicknesses on the inner wall of the graphite crucible, and can also adapt to the scraping work of the inner wall of the graphite crucible with various apertures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the state where the arc-shaped clamping jaws and the first pressing plate fix the graphite crucible; Figure 3 It is a structural schematic diagram of the scraper assembly; Figure 4 for Figure 3 AA section view; Figure 5 for Figure 4 A magnified schematic diagram of the part B in the middle; Figure 6 is a three-dimensional diagram of a scraper assembly; Figure 7 for Figure 6 A magnified schematic diagram of the local C in the middle; In the attached drawings, 1, tipping machine, 2, dumping station, 3, trimming station, 4, graphite crucible, 5, rotating shaft, 6, scraper, 7, fixed sleeve, 8, ejector pin, 801, pin body, 802, convex edge, 9, compacting sheet, 10, spring, 11, transmission wheel, 12, stepped hole, 13, extended spring sheet, 14, compartment, 15, lifting platform, 16, arc-shaped clamping claw, 17, first pressure plate, 18, unloading hole. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Specific embodiments, such as Figure 1 As shown, a loading and unloading system for a graphite crucible tunnel kiln production line includes a tipping machine 1 arranged at a dumping station 2. The tipping machine 1 is an existing device. The tipping angle of the tipping machine 1 is selected to be 180°. The graphite crucible 4 is placed in a compartment 14 matched with the tipping machine 1. The key point is that the unloading system also includes a scraping assembly located below the tipping machine 1, such as Figure 3-Figure 7As shown, the scraper assembly includes a lifting platform 15, a rotating shaft 5 and a group of scraper blades 6. A fixed sleeve 7 is provided on the lifting platform 15. A group of ejector pins 8 in a circumferential array are provided on the fixed sleeve 7. A spring 10 is provided between the ejector pins 8 and the fixed sleeve 7. The rotating shaft 5 is sleeved in the fixed sleeve 7 and forms a rotational fit with the fixed sleeve 7. The rotating shaft 5 and the fixed sleeve 7 are coaxially arranged. The scraper blade 6 is a cantilevered arc spring sheet. The scraper blade 6 is installed on the rotating shaft 5 by means of a connecting rod and passes through the cantilevered end of the ejector pin 8 in sequence as the rotating shaft 5 rotates. The scraper blade 6 scrapes the inner wall of the graphite crucible 4, and the gap between the scraper blades 6 forms a material drop channel. Preferably, the lifting platform 15 is a hydraulic lifting platform.

[0015] After the graphite crucible 4 is fired, it is output from the kiln to the dumping station 2, and the graphite crucible 4 is turned 180 degrees with the help of the dumping machine 1, so that the graphite crucible 4 dumps the graphite negative electrode powder inside to the bottom of the dumping machine 1, and then the lifting platform 15 is raised, and with the help of manual assistance, the scraper 6 and the push pin 8 are extended into the graphite crucible 4, and the overhanging end of the push pin 8 contacts the inner wall of the graphite crucible 4 under the action of the spring 10, and the rotating shaft 5 rotates to make the scraper 6 pass through the overhanging end of the push pin 8 in turn. When the scraper 6 passes the overhanging end of the push pin 8, it squeezes the push pin 8, so that the push pin 8 retracts backward, and the scraper 6 enters between the push pin 8 and the inner wall of the graphite crucible 4, and the push pin 8 provides a reverse force to the scraper 6, pressing the scraper 6 tightly against the graphite crucible 4, so that the scraper 6 can effectively scrape the inner wall of the graphite crucible 4 and scrape off as much of the adhered graphite negative electrode powder as possible; because the inner wall of the graphite crucible 4 has not been trimmed and the graphite negative electrode powder is adhered to the inner wall, the inner wall of the graphite crucible 4 with the graphite negative electrode powder is not a smooth round hole, and a large amount of debris of the graphite crucible 4 will be generated when cleaning with a boring tool. The setting of the spring 10 and the ejector pin 8 can make the trajectory of the scraper 6 follow the inner wall of the graphite crucible 4 and scrape off the adhered graphite negative electrode powder; at the same time, due to the elastic properties of the spring 10 and the elastic properties of the scraper 6, hard cutting between the scraper 6 and the inner wall of the graphite crucible 4 is avoided, and the debris of the graphite crucible 4 is prevented from falling and mixing with the graphite negative electrode powder.

[0016] The arc-shaped spring piece can be expanded along with the extension length of the compacting piece 9 to adapt to the scraping of graphite negative electrode powder with different adhesion thicknesses, and can also adapt to the scraping work of the inner wall of the graphite crucible 4 with various pore diameters.

[0017] Under the action of the spring, after the scraper 6 scrapes a layer of graphite negative electrode powder, it will be pushed out by the compacting sheet on the push pin 8, so as to fully scrape the residual graphite negative electrode powder. When it hits the side wall of the graphite crucible, this process stops; as the scraping pin moves forward, the lifting platform 15 rises to make the scraper 6 continue to feed into the graphite crucible 4, thereby completing the scraping and discharging of the inner wall of the graphite crucible 4.

[0018] A conical slide is provided at the bottom of the fixed sleeve 7, and a blanking port is provided on the lifting platform 15. The diameter of the blanking port is larger than the bottom diameter of the conical slide. The fixed sleeve 7 is connected to the lifting platform 15 by means of a mounting plate and is erected above the blanking port.

[0019] Among them, the upper end of the graphite crucible 4 is higher than the upper end of the compartment 14, and a group of pairs of arc-shaped clamps 16 are horizontally arranged on the side wall of the tipping machine 1. The tipping machine 1 is also provided with a first pressing plate 17. The arc-shaped clamps 16 position and clamp the graphite crucible. The first pressing plate 17 presses down and fixes the graphite crucible 4 with the help of a hydraulic telescopic rod, and the end of the first pressing plate 17 is located above the side wall of the graphite crucible 4. After the carriage 14 carrying the graphite crucible 4 enters the tipping machine 1, the graphite crucible 4 is located between the paired arc-shaped jaws 16. The arc-shaped jaws 16 have the freedom to approach each other with the help of the hydraulic telescopic rod. The arc-shaped jaws 16 approach each other under the action of the hydraulic telescopic rod to clamp the graphite crucible in place, and then the first pressing plate 17 descends under the action of the hydraulic telescopic rod to contact the upper end of the graphite crucible 4 to press the graphite crucible 4. The tipping machine 1 carries the carriage 14 and the graphite crucible 4 to turn over so that the opening of the graphite crucible 4 faces downward; preferably, the center position between the paired arc-shaped jaws 16 is located in the axial direction of the fixed sleeve 7, which helps to reduce the position error between the scraper assembly and the graphite crucible 4, so that the top pins 8 can all generate pressure on the inner wall of the graphite crucible 4, ensuring that the scraper 6 can effectively scrape the inner wall of the graphite crucible 4.

[0020] In order to improve the stability, a second pressing plate may be provided on the tipping machine 1 , so that the second pressing plate and the side wall of the compartment 14 are matched and pressed tightly on the tipping machine 1 , thereby reducing the stress on the graphite crucible 4 .

[0021] like Figure 3 , Figure 6 As shown, the overhanging end of the ejector pin 8 is provided with a rugby-face-shaped compacting sheet 9, and the scraper 6 passes through the compacting sheet 9 in sequence and approaches the inner wall of the graphite crucible 4 with the help of the thrust of the compacting sheet 9. Since the compacting sheet 9 is in a rugby-face-shaped structure, it is convenient for the compacting sheet 9 to enter the graphite crucible 4, and the edge of the compacting sheet 9 is closer to the fixed sleeve 7 than the middle part. When the rotating shaft 5 rotates, the scraper 6 gradually moves from the edge of the compacting sheet 9 to the center of the compacting sheet 9, and the scraper 6 provides a force toward the fixed sleeve 7 to the compacting sheet 9, so that the compacting sheet 9 moves backward. At the same time, under the action of the spring 10, the compacting sheet 9 provides a force toward the inner wall of the graphite crucible 4 for the scraper 6, so that the scraper 6 is close to the inner wall of the graphite crucible 4, so that the scraper 6 can effectively scrape off the graphite negative electrode powder adhering to the inner wall of the graphite crucible 4.

[0022] The gap between the compacting sheets 9 is smaller than the width of the scraper 6. The scraper 6 is always between the compacting sheets 9 and the inner wall of the graphite crucible 4 during the rotation of the rotating shaft 5. The scraper 6 will not separate from the compacting sheets 9, so that the scraper 6 can effectively contact the inner wall of the graphite crucible 4, thereby scraping off the adhered graphite negative electrode powder.

[0023] like Figure 5 As shown, a protruding edge 802 is provided on the pin body 801 of the ejector pin 8, and a stepped hole 12 matching the pin body 801 and the protruding edge 802 is provided on the fixed sleeve 7. The protruding edge 802 and the stepped hole 12 are arranged to slide, and the spring 10 is arranged in the stepped hole 12 and sleeved on the pin body 801. The two ends of the spring 10 are respectively connected with the protruding edge 802 and the stepped surface of the stepped hole 12. In this embodiment, the stepped hole 12 is a three-level stepped hole, that is, it includes a large diameter hole that slides with the protruding edge 802, a medium diameter hole for installing the spring 10, and a small diameter hole for providing an escape space for the end of the pin body 801. The spring 10 is sleeved on the pin body 801, and the two ends of the spring 10 are respectively connected with the protruding edge 802 and the stepped surface of the stepped hole 12. The stepped surface of the stepped hole 12 provides support for the spring 10. While the step hole 12 and the protruding edge 802 slide, the pin body 801 can position the spring 10.

[0024] like Figure 6 , Figure 7 As shown, an extended spring piece 13 is cantilevered on the blade side of the scraper 6, and the edge of the extended spring piece 13 is set in a conical or arc shape. The extended spring piece 13 is easy to deform when in contact with the inner wall of the graphite crucible 4, and can better adapt to being inserted between the inner wall of the graphite crucible 4 and the graphite negative electrode powder to scrape off the graphite negative electrode powder.

[0025] A transmission wheel 11 is provided at the lower end of the rotating shaft 5, and a motor is provided on the lifting platform 15. The power output shaft of the motor is chain-driven with the transmission wheel 11. The motor drives the transmission wheel 11 to rotate, and the transmission wheel 11 drives the rotating shaft 5 to rotate, thereby realizing the movement of the scraper 6 in the graphite crucible 4.

[0026] The rotating shaft 5 is provided with a discharge hole 18 parallel to its axial direction. The discharge hole 18 provides more dropping channels for the scraped graphite negative electrode powder, which helps the graphite negative electrode powder in the graphite crucible 4 to be discharged smoothly.

Claims

1. A graphite crucible tunnel kiln production line loading and unloading system, comprising a tipping machine (1) arranged at a dumping station (2), wherein the tipping machine (1) has a turning angle of 180°, and a graphite crucible (4) is placed in a compartment (14) matched with the tipping machine (1), characterized in that: The unloading system further comprises a scraper assembly located below the tipping machine (1), the scraper assembly comprising a lifting platform (15), a rotating shaft (5) and a group of scraper knives (6), the lifting platform (15) being provided with a fixed sleeve (7), a group of ejector pins (8) being arranged in an array on the fixed sleeve (7), a spring (10) being arranged between the ejector pins (8) and the fixed sleeve (7), the rotating shaft (5) being sleeved in the fixed sleeve (7) and forming a rotational fit with the fixed sleeve (7), the scraper knives (6) being cantilevered arc-shaped spring pieces, the scraper knives (6) being mounted on the rotating shaft (5) and passing through the cantilevered ends of the ejector pins (8) in sequence as the rotating shaft (5) rotates, the scraper knives (6) scraping the inner wall of the graphite crucible (4), and the gaps between the scraper knives (6) forming a material dropping channel.

2. A graphite crucible tunnel kiln production line loading and unloading system according to claim 1, characterized in that: The upper end of the graphite crucible (4) is higher than the upper end of the compartment (14); a group of pairs of arc-shaped clamps (16) are horizontally arranged on the side wall of the tipping machine (1); a first pressing plate (17) is also arranged on the tipping machine (1); the arc-shaped clamps (16) are used to position and clamp the graphite crucible; the first pressing plate (17) is used to press down and fix the graphite crucible (4) by means of a hydraulic telescopic rod; the end of the first pressing plate (17) is located above the side wall of the graphite crucible (4).

3. A graphite crucible tunnel kiln production line loading and unloading system according to claim 1, characterized in that: The overhanging end of the ejector pin (8) is provided with a rugby-surface-shaped compacting sheet (9), and the scraper (6) passes through the compacting sheet (9) in sequence and approaches the inner wall of the graphite crucible (4) with the help of the thrust of the compacting sheet (9).

4. A graphite crucible tunnel kiln production line loading and unloading system according to claim 3, characterized in that: The gap between the compacting sheets (9) is smaller than the width of the scraper (6).

5. The graphite crucible tunnel kiln production line loading and unloading system according to claim 1, characterized in that: The pin body (801) of the ejector pin (8) is provided with a convex edge (802), the fixed sleeve (7) is provided with a stepped hole (12) matching the pin body (801) and the convex edge (802), the convex edge (802) and the stepped hole (12) are slidingly arranged, the spring (10) is arranged in the stepped hole (12) and sleeved on the pin body (801), and the two ends of the spring (10) are respectively connected to the convex edge (802) and the step surface of the stepped hole (12).

6. A graphite crucible tunnel kiln production line loading and unloading system according to claim 1, characterized in that: An extended spring piece (13) is cantilevered on the blade entry side of the scraper (6), and the edge of the extended spring piece (13) is arranged in a conical or arc shape.

7. The graphite crucible tunnel kiln production line loading and unloading system according to claim 1, characterized in that: A transmission wheel (11) is arranged at the lower end of the rotating shaft (5), a motor is arranged on the lifting platform (15), and the rotating shaft (5) is connected to the power output shaft of the motor by means of the transmission wheel (11).

8. A graphite crucible tunnel kiln production line loading and unloading system according to claim 7, characterized in that: The rotating shaft (5) is provided with a discharge hole (18) parallel to its axial direction.

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