A band saw cutting device for fan-shaped sampling of aluminum samples during furnace operation

Abstract

This invention belongs to the technical field of band saw cutting in metal material testing and sample processing. Specifically, it is a band saw cutting device for fan-shaped sampling of aluminum in furnace samples. The device includes a machine body, on which a lifting head and a band saw are connected via a drive device. The lifting head controls the band saw to cut the material. A controller is installed on the machine body surface. A caliper is fixedly connected to the machine body surface; the caliper is a three-jaw caliper with "L"-shaped jaws. Through the design of the caliper, servo motor, first gear, worm gear, and positioning mechanism, when the controller controls the lifting head, it drives the band saw to cut the aluminum material. When the aluminum material needs to rotate, the controller controls the servo motor to rotate, which in turn drives the first gear via the worm gear. The first gear drives the caliper to rotate, and the caliper can rotate the aluminum material at a certain angle, achieving the purpose of fan-shaped cutting.

Description

Technical Field

[0001] This invention belongs to the technical field of band saw cutting in metal material testing sample processing, specifically a band saw cutting device for fan-shaped sampling of aluminum in furnace samples. Background Technology

[0002] Aluminum and aluminum alloy products are widely used in aerospace, rail transportation, new energy vehicles, and high-end equipment manufacturing. To ensure that the quality, chemical composition, grain size, and mechanical properties of the ingots meet the standard requirements, it is necessary to take samples from the ingots for testing of mechanical properties and chemical composition during the production process.

[0003] Furnace-as-usual samples are samples that are smelted, cast, or heat-treated together with the final aluminum products in the same furnace, using the same process, and in the same batch. They are used to represent the quality of the entire furnace of molten aluminum or the final product. When sampling aluminum furnace-as-usual samples, a piece is cut from the edge to the center of a ring-shaped or cylindrical aluminum product (aluminum rod, aluminum ingot) as a sample. The entire furnace of products is then sampled. For ring-shaped aluminum materials, the sample must be "fan-shaped" to ensure that the surface, middle, and core are sampled simultaneously, so as to represent the composition and structure of the entire cross-section and thus avoid detection errors caused by compositional segregation.

[0004] Chinese patent application CN201710329216.6 discloses a band saw, including a bed, a saw frame mounted on the bed, a worktable inside the saw frame, two columns inside the saw frame, a guide arm between the two columns, a guide seat mounted on the guide arm, a shock absorber mounted on the guide seat, two swing shafts inside the shock absorber, a spring between the front parts of the two swing shafts, and two rollers connected to the rear parts of each swing shaft, with a saw band gap between the two rollers. The beneficial effects of this invention are: during the use of the band saw, it can reduce or even eliminate saw band vibration, significantly improving the shock absorption effect, extending the service life of the saw band, improving the cutting accuracy of materials, and reducing sawing noise.

[0005] However, the above-mentioned technologies often have the following drawbacks: they cannot perform fan-shaped cutting on cylindrical aluminum materials. Existing structures can only achieve conventional straight-line sawing and cannot complete the fan-shaped slice cutting from the edge to the center in one go according to the size requirements of fan-shaped sampling. Multiple cutting adjustments are often required, which not only results in low sampling efficiency and deviation of the cutting trajectory due to repeated loading and unloading, but also makes it easy for the sample to fail to cover the surface, middle and core areas at the same time, affecting the representativeness of the sample and increasing the risk of detection errors caused by component segregation. Moreover, traditional band saws lack protective mechanisms during use, which leads to aluminum chips flying, which not only increases the workload of on-site cleaning, but also easily causes safety hazards such as scratches and burns to operators.

[0006] Therefore, the present invention provides a band saw cutting device for fan-shaped sampling of aluminum samples taken in a furnace. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the present invention provides a band saw cutting device for fan-shaped sampling of aluminum furnace sample, comprising a machine body, wherein a lifting head and a band saw are connected to the surface of the machine body through a drive device, the lifting head is used to control the band saw to cut the material, and a controller is provided on the surface of the machine body; A caliper is fixedly connected to the surface of the machine body. The caliper is a three-jaw caliper, and the jaws on the surface of the caliper are "L" shaped. The caliper surface is fixedly fitted with a second gear, and the body is provided with a first gear. The surface of the first gear is rotatably connected to a worm gear, which is driven by a servo motor. The caliper surface holds aluminum material, a support mechanism is provided inside the aluminum material, and a positioning mechanism is provided at the end of the aluminum material away from the caliper; The caliper surface is fitted with a protective cover, which is fixedly connected to the surface of the machine body; The machine body has chip removal grooves on its surface for discharging waste chips. Through the design of the caliper, servo motor, second gear, worm gear, and positioning mechanism, when the controller controls the lifting head, it drives the band saw to cut the aluminum material. When the aluminum material needs to rotate, the controller controls the servo motor to rotate, which in turn drives the worm gear to drive the first gear. The first gear drives the caliper to rotate, and the caliper can then rotate the aluminum material at a certain angle, achieving the purpose of fan-shaped cutting. Processing is completed in one clamping operation, which not only improves sampling efficiency but also covers the surface, middle, and core areas, reducing the risk of detection errors caused by component segregation. Simultaneously, the positioning mechanism keeps the aluminum material concentric with the caliper, avoiding positioning deviations and ensuring the dimensional accuracy of the fan-shaped sample, further reducing the sampling workload and error probability.

[0009] Preferably, the positioning mechanism includes a cylinder, which is fixedly mounted on the machine body. An installation shaft is sleeved on the surface of the cylinder's output shaft, and a rib is fixedly connected to the surface of the installation shaft. Three ribs are provided, and their angles correspond to the chucks. A thrust ball bearing is fixedly connected to the installation shaft. The cylinder's output rod is inserted into the installation shaft through the ball bearing. The cylinder has a pressure threshold to prevent excessive compression from damaging the aluminum material. The thrust ball bearing allows the installation shaft to rotate with the chuck, thus cooperating with the chuck to achieve the purpose of rotating the aluminum material.

[0010] Preferably, the ribs are triangular, and the three ribs form a cone. The intersection of the three ribs is concentric with the chuck. The cone shape formed by the three ribs can not only position the aluminum material, but also prevent the saw from accidentally cutting the ribs, ensuring the normal use of the positioning mechanism. The triangular ribs, together with the chuck, can clamp aluminum materials of different diameters, greatly improving the applicability of the device.

[0011] Preferably, the support mechanism includes a mandrel, on the surface of which a support rod is fixedly connected. The number and angle of the support rods correspond to the chucks. A slide rod is slidably connected to the surface of the support rod via a spring. A positioning bolt is threaded onto the surface of the support rod to fix the slide rod. The support mechanism can support the interior of the aluminum material, and because the aluminum material is relatively soft, it prevents the chucks from squeezing and deforming the aluminum material.

[0012] Preferably, a top plate is fixedly connected to the end of the slide rod. The top plate is arc-shaped, and a rubber pad is fixedly connected to the surface of the top plate. The rubber pad is in contact with the inner wall of the aluminum material, and the aluminum material can be further protected by the rubber pad.

[0013] Preferably, the mandrel has a cavity, and a scroll is rotatably connected inside the cavity. The scroll passes through the cavity and is rotatably connected. A connecting line is fixedly connected to the end of the slide rod. The end of the connecting line away from the slide rod is fixedly connected to the scroll. By rotating the scroll, the connecting line is wound up, and the three slide rods are simultaneously contracted towards the center, which makes it easier for workers to install the support mechanism.

[0014] Preferably, a fixing plate is fixedly connected to the surface of the lifting head by bolts, and a protective cover is rotatably connected to the surface of the fixing plate by a hinge. A cleaning mechanism is provided on the protective cover. The hinge between the protective cover and the fixing plate is a torque hinge, which can be used to flip up and fix the protective cover, making it convenient for workers to disassemble and assemble aluminum materials.

[0015] Preferably, the cleaning mechanism includes a slider disposed on the surface of the protective cover. A locking block is fixedly connected to the surface of the slider, and a slide rail is fixedly connected to the surface of the protective cover. The locking block is slidably connected within the slide rail. There are two slide rails, which are symmetrically designed. A fixed shaft is fixedly connected between the two sliders. A cleaning block is disposed on the surface of the fixed shaft. With the cleaning mechanism, during use, it is only necessary to push the slider to move back and forth along the slide rail to drive the cleaning block to wipe the surface of the transparent window, quickly completing the cleaning operation without the need for manual wiping by the operator. This ensures clear observation without interrupting the cutting operation, guarantees the smooth progress of the cutting operation, and improves the operational safety and efficiency of the cutting operation.

[0016] Preferably, a rotating shaft is rotatably connected to the surface of the fixed shaft, the cleaning block is fixedly connected to the surface of the rotating shaft, and a number of toothed blocks are fixedly connected to the surface of the rotating shaft. The toothed blocks are circumferentially distributed on the surface of the rotating shaft, and a number of toothed grooves are formed on the surface of the slide rail relative to the position of the toothed blocks. The cleaning block is rotated by the toothed blocks cooperating with the toothed grooves, thereby improving the cleaning effect.

[0017] Preferably, the cleaning block is made of soft material and is divided into several blocks. A set of bases is fixedly connected between a pair of the blocks. A scraper head is rotatably connected to the surface of the base via an elastic element. The scraper head has a pointed end design. The scraper head removes the debris adhering to the surface of the cleaning block, thereby extending the service life of the cleaning block and reducing the replacement frequency. Furthermore, because the cleaning block is divided into several blocks, the gaps between the blocks are equivalent to having built-in micro-scraping openings, which can further improve the cleaning effect. Finally, the segmented cleaning block can also increase the contact area with air, improve the drying speed, and reduce the risk of mold and odor.

[0018] The beneficial effects of this invention are as follows: 1. The present invention discloses a band saw cutting device for fan-shaped sampling of aluminum furnace sample. Through the design of calipers, servo motors, first gears, worm gears, and positioning mechanisms, when the controller controls the lifting head, it drives the band saw to cut the aluminum material. When the aluminum material needs to be rotated, the controller controls the servo motor to rotate, which in turn drives the first gear through the worm gear. The first gear drives the caliper to rotate, and the caliper can then rotate the aluminum material at a certain angle, achieving the purpose of fan-shaped cutting of the aluminum material. The processing is completed in one clamping, which not only improves the sampling efficiency but also covers the surface, middle, and core areas, reducing the risk of detection errors caused by component segregation.

[0019] 2. The band saw cutting device for fan-shaped sampling of aluminum furnace samples described in this invention, through a positioning mechanism, can always keep the aluminum material concentric with the caliper, avoiding positioning deviations, ensuring the dimensional accuracy of the fan-shaped sample, and further reducing the sampling workload and error probability. 3. The band saw cutting device for fan-shaped sampling of aluminum furnace sample described in this invention can clean the transparent window on the protective cover through a cleaning mechanism, so as to avoid aluminum chips generated during cutting from adhering to the surface of the transparent window and affecting the operator's observation of the cutting progress, ensuring the smooth progress of the cutting operation, and improving the operational safety and efficiency of the cutting operation. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional view of the organism in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the front view structure of the organism in Embodiment 1 of the present invention; Figure 3 It is in Embodiment 1 of the present invention Figure 2 Schematic diagram at point A in the middle; Figure 4 It is in Embodiment 1 of the present invention Figure 2 Schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the support mechanism structure in Embodiment 1 of the present invention; Figure 6 It is in Embodiment 1 of the present invention Figure 5 Diagram at point C; Figure 7 This is a schematic diagram of the protective cover in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the cleaning mechanism in Embodiment 2 of the present invention; Figure 9 This is in Embodiment 2 of the present invention Figure 8 Schematic diagram at point D.

[0022] In the diagram: 1. Machine body; 2. Mounting shaft; 3. Cylinder; 5. Controller; 6. Rib plate; 7. Band saw; 8. Aluminum material; 11. Lifting head; 13. Chip conveyor; 15. Protective cover; 16. Thrust ball bearing; 17. Worm gear; 18. First gear; 19. Caliper; 21. Claw; 22. Second gear; 23. Support mechanism; 25. Servo motor; 26. Spindle; 27. Connecting line; 28. Support rod; 29. ​​Positioning bolt; 30. Reel; 31. Top plate; 32. Slide rod; 33. Cleaning mechanism; 35. Protective cover; 36. Slide rail; 37. Slider; 38. Fixing plate; 39. Rotating shaft; 41. Cleaning block; 42. Clamping block; 43. Base; 44. Scraper head; 45. Fixing shaft. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] Example 1: like Figures 1 to 6 As shown in the embodiment of the present invention, a band saw cutting device for fan-shaped sampling of aluminum furnace sample includes a machine body 1. The surface of the machine body 1 is connected to a lifting head 11 and a band saw 7 via a drive device. The lifting head 11 is used to control the band saw 7 to cut the material. A controller 5 is provided on the surface of the machine body 1. A caliper 19 is fixedly connected to the surface of the body 1. The caliper 19 is a three-jaw caliper 19, and the jaws 21 on the surface of the caliper 19 are "L" shaped. The caliper 19 is fixedly fitted with a second gear 22, and the body 1 is provided with a first gear 18. The surface of the first gear 18 is rotatably connected to a worm gear 17, which is driven by a servo motor 25. The first gear 18 and the second gear 22 mesh and transmit power. The caliper 19 holds aluminum material 8 on its surface, and a support mechanism 23 is provided inside the aluminum material 8. A positioning mechanism is provided at the end of the aluminum material 8 away from the caliper 19. The caliper 19 is fitted with a protective cover 15, which is fixedly connected to the surface of the body 1. The surface of the body 1 is provided with a chip discharge groove 13 for discharging waste chips. The ribs 6 are triangular, and the three ribs 6 form a cone. The intersection of the three ribs 6 is concentric with the chuck 21. The chuck 9 is opened manually, and then the annular aluminum material 8 is installed on the surface of the chuck 19. Because the chuck 19 is "L" shaped, after the aluminum material 8 is installed, the height of the inner wall of the annular aluminum material 8 will be higher than the chuck 19. When cutting, it will not touch the chuck 19 and damage the chuck 19. The support mechanism 23 and the positioning mechanism are positioned corresponding to the chuck 19, and similarly, they will not be accidentally damaged.

[0025] The controller 5 starts the saw 7 to cut the aluminum material 8. After cutting, the lifting head 11 is raised. At this time, the controller 5 controls the servo motor 25 to rotate. The servo motor 25 is equipped with a high-precision angle encoder. This encoder can continuously monitor and provide feedback on the rotation angle information of the caliper 19 controlled by the servo motor 25 in real time, thereby ensuring that the system can achieve accurate indexing and positioning of the preset angle. Therefore, when the servo motor 25 works in conjunction with the first gear 18 and the worm gear 17 mechanism, it can effectively rotate the aluminum material 8 to the specified target angle, complete the precise angle adjustment task, and achieve the purpose of fan-shaped cutting of the aluminum material 8. In addition, the controller can also control the up and down stroke of the saw 7, thereby completing the cutting of aluminum materials 8 with different diameter ranges. Finally, the cutting waste is swept into the chip discharge groove 13 for discharge.

[0026] The positioning mechanism includes a cylinder 3, which is fixedly mounted on the machine body 1. An installation shaft 2 is sleeved on the surface of the output shaft of the cylinder 3. Ribs 6 are fixedly connected to the surface of the installation shaft 2. There are three ribs 6, and their angles correspond to the jaws 21. A thrust ball bearing 16 is fixedly connected to the installation shaft 2. The output rod of the cylinder 3 is inserted into the installation shaft 2 through the ball bearing. After the aluminum material 8 is installed, the cylinder 3 is started by the controller 5. At this time, the output shaft of the cylinder 3 will drive the installation shaft 2. The installation shaft 2 will drive the ribs 6 to press against the end of the aluminum material 8, which, together with the caliper 19, positions the aluminum material 8. When the caliper 19 rotates, the installation shaft 2 and the thrust ball bearing 16 achieve synchronous rotation.

[0027] The support mechanism 23 includes a spindle 26, with support rods 28 fixedly connected to the surface of the spindle 26. The number and angle of the support rods 28 correspond to the claws 21. A slide rod 32 is slidably connected to the surface of the support rod 28 via a spring. A positioning bolt 29 is threadedly connected to the surface of the support rod 28 for fixing the slide rod 32. A top plate 31 is fixedly connected to the end of the slide rod 32. The top plate 31 is arc-shaped, and a rubber pad is fixedly connected to the surface of the top plate 31. The rubber pad is in contact with the inner wall of the aluminum material 8. A cavity is formed on the spindle 26, and a scroll 30 is rotatably connected inside the cavity. The scroll 30 passes through the cavity and is rotatably connected. A connecting line 27 is fixedly connected to the end of the slide rod 32. The connecting line 27 is located away from the... One end of the slide bar 32 is fixedly connected to the reel 30. When the aluminum material 8 is placed on the jaw 21 on the surface of the caliper 19, the jaw 21 is pre-tightened first, and then the reel 30 on the support mechanism 23 is rotated to wind up the connecting line 27. At the same time, the connecting line 27 pulls the three slide bars 32 to converge towards the center. At this time, the support mechanism 23 can be held and placed in the position corresponding to the jaw 21. Then, the slide bar 32 is reset by the spring. The top plate 31 of the slide bar 32 is attached to the inner wall of the aluminum material 8. Then, the positioning bolt 29 is tightened to position the slide bar 32 and support the inner wall of the aluminum material 8. Then, the jaw 21 on the surface of the caliper 19 is tightened to avoid the aluminum material 8 being squeezed and deformed.

[0028] Example 2: like Figures 7 to 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the surface of the lifting head 11 is fixedly connected to the fixing plate 38 by bolts, the surface of the fixing plate 38 is rotatably connected to the protective cover 35 by hinges, the protective cover 35 is provided with a cleaning mechanism 33, and the hinge between the protective cover 35 and the fixing plate 38 is a torque hinge. After the aluminum material 8 is installed, the machine body 1 is started. At this time, the controller 5 controls the lifting head 11 to rise and fall, and at the same time, it will also drive the protective cover 35 to move. When the hacksaw 7 contacts the aluminum material 8, the protective cover 35 is just above the aluminum material 8 to block it and prevent the debris from flying out.

[0029] The cleaning mechanism 33 includes a slider 37, which is disposed on the surface of the protective cover 35. A locking block 42 is fixedly connected to the surface of the slider 37, and a slide rail 36 is fixedly connected to the surface of the protective cover 35. The locking block 42 is slidably connected within the slide rail 36. There are two slide rails 36, which are symmetrically designed. A fixed shaft 45 is fixedly connected between the two sliders 37. A cleaning block 41 is disposed on the surface of the fixed shaft 45. During the cutting process, waste residue may remain on the observation window, affecting the operator's vision. At this time, the slider 37 can be slid, which drives the locking block 42 to move within the slide rail 36. Simultaneously, the slider 37 drives the fixed shaft 45, which in turn drives the cleaning block 41 to wipe and clean the observation window. The design of two slide rails 36 can balance the movement distance of the two sliders 37, avoiding misalignment or jamming. The cleaning block 41 can be made of different materials depending on the actual situation.

[0030] The fixed shaft 45 is rotatably connected to a rotating shaft 39. The cleaning block 41 is fixedly connected to the surface of the rotating shaft 39. Several toothed blocks are fixedly connected to the surface of the rotating shaft 39. The toothed blocks are circumferentially distributed on the surface of the rotating shaft 39. Several toothed grooves are opened on the surface of the slide rail 36 relative to the position of the toothed blocks. When the fixed shaft 45 moves, it will drive the toothed blocks on the surface to engage in the toothed grooves. Because there are multiple toothed blocks and they are circumferentially designed, the rotating shaft 39 will rotate clockwise under the restriction of the toothed grooves, thereby driving the cleaning block 41 to rotate, further improving the cleaning effect.

[0031] The cleaning block 41 is made of soft material and is divided into several blocks. A set of bases 43 is fixedly connected between a pair of the locking blocks 42. A scraper head 44 is rotatably connected to the surface of the base 43 through an elastic element. The scraper head 44 has a pointed end. When the cleaning block 41 rotates, the scraper head 44 scrapes the surface of the cleaning block 41 to remove the debris and liquid adhering to its surface. This not only ensures the cleaning effect but also protects the observation window from being scratched by debris. The scraper head 44 adopts a unidirectional rotation design. When the rotating shaft 39 rotates in the same direction, the right scraper head 44 is forced to rotate downward to prevent the scraped liquid impurities from remaining on its surface. At this time, the left scraper head 44 remains stationary and can perform normal cleaning operations on the cleaning block 41. Conversely, the elastic element drives it to reset, and the two scraper heads 44 switch roles.

[0032] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0033] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A band saw cutting device for fan-shaped sampling of aluminum furnace sample, comprising a machine body (1), wherein a lifting head (11) and a band saw (7) are connected to the surface of the machine body (1) via a drive device, the lifting head (11) is used to control the band saw (7) to cut the material, and a controller (5) is provided on the surface of the machine body (1). Its features are: A caliper (19) is fixedly connected to the surface of the body (1). The caliper (19) is a three-jaw caliper (19), and the jaws (21) on the surface of the caliper (19) are "L" shaped. The caliper (19) is fixedly fitted with a second gear (22), and the body (1) is provided with a first gear (18). The surface of the first gear (18) is rotatably connected with a worm gear (17), which is driven by a servo motor (25). The caliper (19) holds aluminum material (8) on its surface. A support mechanism (23) is provided inside the aluminum material (8). A positioning mechanism is provided at the end of the aluminum material (8) away from the caliper (19). The caliper (19) is fitted with a protective cover (15), which is fixedly connected to the surface of the body (1); The surface of the machine body (1) is provided with a chip discharge groove (13) for discharging waste chips.

2. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 1, characterized in that: The positioning mechanism includes a cylinder (3), which is fixedly mounted on the machine body (1). The output shaft surface of the cylinder (3) is fitted with a mounting shaft (2). The surface of the mounting shaft (2) is fixedly connected with a rib plate (6). There are three rib plates (6), and their angles correspond to the claw (21). A thrust ball bearing (16) is fixedly connected to the mounting shaft (2). The output rod of the cylinder (3) is inserted into the mounting shaft (2) through the ball bearing.

3. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 2, characterized in that: The rib (6) is triangular, and the three ribs (6) form a cone. The intersection of the three ribs (6) is concentric with the claw (21).

4. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 3, characterized in that: The support mechanism (23) includes a spindle (26), on which a support rod (28) is fixedly connected. The number and angle of the support rod (28) correspond to the claw (21). A slide rod (32) is slidably connected to the surface of the support rod (28) by a spring. A positioning bolt (29) is threadedly connected to the surface of the support rod (28) for fixing the slide rod (32).

5. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 4, characterized in that: The top plate (31) is fixedly connected to the end of the slide rod (32). The top plate (31) is arc-shaped and a rubber pad is fixedly connected to the surface of the top plate (31). The rubber pad is in contact with the inner wall of the aluminum material (8).

6. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 5, characterized in that: A cavity is provided on the spindle (26), and a scroll (30) is rotatably connected inside the cavity. The scroll (30) is rotatably connected through the cavity. A connecting line (27) is fixedly connected to the end of the slide rod (32). The end of the connecting line (27) away from the slide rod (32) is fixedly connected to the scroll (30).

7. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 6, characterized in that: The surface of the lifting head (11) is fixedly connected to a fixing plate (38) by bolts. The surface of the fixing plate (38) is rotatably connected to a protective cover (35) by a hinge. A cleaning mechanism (33) is provided on the protective cover (35). The hinge between the protective cover (35) and the fixing plate (38) is a torque hinge.

8. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 7, characterized in that: The cleaning mechanism (33) includes a slider (37), which is disposed on the surface of the protective cover (35). A locking block (42) is fixedly connected to the surface of the slider (37), and a slide rail (36) is fixedly connected to the surface of the protective cover (35). The locking block (42) is slidably connected in the slide rail (36). There are two slide rails (36) in a symmetrical design. A fixed shaft (45) is fixedly connected between the two sliders (37), and a cleaning block (41) is disposed on the surface of the fixed shaft (45).

9. The band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 8, characterized in that: The fixed shaft (45) is rotatably connected to the rotating shaft (39), the cleaning block (41) is fixedly connected to the rotating shaft (39), and a number of toothed blocks are fixedly connected to the rotating shaft (39). The toothed blocks are circumferentially distributed on the rotating shaft (39), and a number of toothed grooves are opened on the surface of the slide rail (36) relative to the position of the toothed blocks.

10. A band saw cutting device for fan-shaped sampling of aluminum furnace sample according to claim 9, characterized in that: The cleaning block (41) is soft and divided into several blocks. A set of bases (43) is fixedly connected between a pair of the card blocks (42). A scraper head (44) is rotatably connected to the surface of the base (43) through an elastic element. The end of the scraper head (44) is designed with a pointed tip.

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