Punching device and punching method for high-purity aluminum-scandium target material

Abstract

The invention discloses a punching device and a punching method for a high-purity aluminum scandium target material, and relates to the technical field of aluminum scandium target material production. The stamping device is mounted above the base through a mounting seat, and a mounting plate is fixed to the output end of the stamping device; the pressing pipe is rotationally mounted on the lower surface of the mounting plate through a rotating seat, and the pressing pipe vertically corresponds to the circular through hole; the punching head is installed at the lower end of the pressing pipe, and the outer diameter of the punching head is larger than that of the pressing pipe; and the grinding mechanism is arranged on the pressing pipe, and the grinding mechanism comprises at least one friction belt coil. The pressing pipe can be driven to rotate through the driving mechanism, the friction part extending out of the pressing pipe is further made to rotate, the friction part makes contact with the edge of the lower end opening of the workpiece round hole, and the rotating friction part can remove burrs on the edge of the lower end opening of the workpiece round hole.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum-scandium target material production, and in particular to a punching device and a punching method for a high-purity aluminum-scandium target material. Background Art

[0002] High-purity aluminum-scandium target is an alloy material composed of aluminum and scandium, which is mainly used as a sputtering or evaporation source in processes such as physical vapor deposition (PVD). It is often used in aerospace materials, sports equipment, and electronic products. When producing these products, it is inevitable to punch them due to product needs.

[0003] The authorization announcement number is CN 217252007 U, and the name is "High-efficiency Plate Punching Device". Although this patent can replace manual production, has a reliable structure, high performance, easy use, and easy maintenance, reduces the number of operators, and improves the company's market competitiveness, when punching the plate, the lower end of the hole will often have burrs. For the sake of the quality of the plate, the burrs need to be removed later, thus increasing the subsequent inspection and burr removal process, thereby increasing the production cost. Summary of the invention

[0004] The purpose of the present invention is to provide a punching device and a punching method for a high-purity aluminum-scandium target material, which solves the problem that the existing punching device has burrs, requires special detection and burr removal processes, and thus increases production costs.

[0005] The present invention solves the above technical problems through the following technical solutions, which include: A base, wherein a circular through hole is formed on the base; A punch, the punch is mounted above the base through a mounting seat, and a mounting plate is fixed to the output end of the punch; A pressing tube, which is rotatably mounted on the lower surface of the mounting plate through a rotating seat, and the pressing tube vertically corresponds to the circular through hole; A punch head, which is installed at the lower end of the pressing tube, and the outer diameter of the punch head is larger than the outer diameter of the pressing tube; A friction belt mechanism, the friction belt mechanism is arranged on the pressure tube, the friction belt mechanism includes at least one friction belt roll, the friction belt roll is installed on the outside of the pressure tube through a mounting base, the pressure tube has a guide assembly arranged along its axial direction, and the two ports of the guide assembly are respectively connected to the outside of the pressure tube, the friction belt on the friction belt roll passes through the upper port of the guide assembly and extends from the lower port of the guide assembly to form a friction part; A driving mechanism, which is mounted on the mounting plate and is used to drive the pressing tube to rotate so as to achieve deburring by friction between the friction part and the edge of the lower port of the circular hole; The cutting mechanism is arranged on the outside of the pressure tube and is used to cut off the worn friction part.

[0006] Preferably, the guide assembly comprises an upper arc tube, a telescopic tube and a lower arc tube which are arranged in sequence from top to bottom, the upper arc tube is fixed to the pressing tube and communicated with the outer side of the pressing tube, the lower arc tube is fixed to the pressing tube and communicated with the outer side of the pressing tube, the lower end of the telescopic tube is fixedly connected to the lower arc tube, and the telescopic tube corresponds vertically to the upper arc tube; The friction belt mechanism also includes a pushing assembly, which is used to push the friction belt out of the lower arc tube to adjust the length of the friction part. The pushing assembly includes a first electric push rod fixed to a mounting plate, a connecting plate is rotatably mounted on the telescopic end of the first electric push rod, the upper end of the telescopic tube is fixedly connected to the connecting plate, an airbag is installed on the side wall of the telescopic tube, and the expansion and contraction of the airbag is controlled by an external air pump to fix and loosen the friction belt in the telescopic tube.

[0007] Preferably, the driving mechanism comprises a motor mounted on a mounting plate, a gear is fixed to an output end of the motor, a first outer gear ring is fixed to an outer side of the pressure tube, and the first outer gear ring is meshingly connected to the gear.

[0008] Preferably, the cutting mechanism includes a rotating drum rotatably sleeved on the outside of the pressing tube, the rotating drum is provided with a transverse through hole for avoiding the friction portion, a cutting edge is provided on one side of the transverse through hole, a second outer gear ring is fixed to the outside of the rotating drum, the second outer gear ring corresponds to the gear teeth of the first outer gear ring one by one, the second outer gear ring and the first outer gear ring are simultaneously meshed and connected with the gear, a second electric push rod is fixed on the mounting plate, the motor is mounted on the telescopic end of the second electric push rod, the second electric push rod is used to adjust the axial position of the gear to adjust whether the gear is meshed with the first outer gear ring; a third electric push rod is fixed to the lower side of the mounting plate for pressing the pressing tube tightly and fixing it.

[0009] Preferably, a support and avoidance mechanism is provided on the outer side of the circular through hole, and the support and avoidance mechanism includes a circular groove opened on the upper surface of the base, and at least two base blocks are annularly distributed in the circular groove, and multiple base blocks are all displaced radially along the circular through hole. The support and avoidance mechanism also includes a mobile power component that drives multiple base blocks to displace synchronously.

[0010] Preferably, the mobile power assembly includes an annular groove opened on the upper surface of the base and concentric with the circular through hole, the annular groove and the circular groove are connected through the elongated inner hole, a third outer gear ring is rotatably installed in the annular groove, a pull rod is fixed to the outer side of the base block and extends to the elongated inner hole, a spring is installed between the base block and the outer inner wall of the circular groove, a pull rope is fixed between the outer end of the pull rod and the third outer gear ring, a fourth electric push rod is fixed to the outer side of the base, a rack is fixed to the telescopic end of the fourth electric push rod, and the rack is meshingly connected with the third outer gear ring.

[0011] Preferably, a guide groove is provided on the base block, and a guide block fixed to the bottom of the circular groove is arranged in the guide groove.

[0012] Preferably, an inclined material guide plate fixed to the base is provided on the lower side of the circular through hole.

[0013] Preferably, the friction belt is composed of a plurality of soft metal wires.

[0014] The present invention also provides a punching method for the punching device for the high-purity aluminum-scandium target, comprising the following steps: Step 1: Install the workpiece: Align the position where the workpiece needs to be punched with the position of the circular through hole; Step 2: Hole forming: Run the punch, drive the punch head to move downward, punch out a circular hole at the corresponding position of the workpiece, and make the punch head pass through the circular through hole; Step 3: Expand the support avoidance mechanism: operate the fourth electric push rod to make the multiple base blocks move radially outward to form a cavity under the circular hole; Step 4, extending the friction part: injecting compressed air into the airbag through an air pump to clamp the friction belt, and extending the telescopic end of the first electric push rod so that the friction part extends out of the lower arc tube and contacts the edge of the lower port of the circular hole; Step 5, deburring: the pressing tube is driven to rotate by the driving mechanism, and the friction part contacts and rubs with the edge of the lower port of the circular hole to achieve deburring; Step 6: Reset: Contract the telescopic end of the first electric push rod to drive the friction part to contract to the lower arc tube, operate the punch, and drive the punch head to move upward to the initial position.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, the pressing tube is driven to rotate by a driving mechanism, and the friction part extending from the pressing tube is further rotated, and the friction part contacts the edge of the lower port of the circular hole of the workpiece, and the rotating friction part can remove the burrs on the edge of the lower port of the circular hole of the workpiece; In the present invention, the friction belt is continuously extended out of the pressure tube through the friction belt mechanism, so that the friction part can be continuously formed, which increases the continuity of the operation and brings convenience to the operators. In the present invention, the severely worn friction belt roll can be cut off by the cutting mechanism to ensure the good working condition of the friction part and effectively remove the burrs. The support and avoidance mechanism of the present invention can form a cavity under the circular hole of the workpiece, so that the friction part can extend to the underside of the circular hole of the workpiece, thereby ensuring the burr removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the punch head of the present invention; Figure 3 for Figure 2 A schematic diagram of a cross-sectional three-dimensional structure; Figure 4 It is a structural schematic diagram of the friction belt mechanism in the present invention; Figure 5 for Figure 2 A schematic diagram of the three-dimensional structure of the cutting mechanism; Figure 6 for Figure 1 Schematic diagram of the planar structure of the middle support avoidance mechanism.

[0017] The numbers in the figure represent: 1-base; 11-inclined guide plate; 2-support avoidance mechanism; 21-circular groove; 22-base block; 231-annular groove; 232-third outer gear ring; 233-pull rod; 234-spring; 235-pull rope; 236-fourth electric push rod; 237-rack; 241-guide groove; 242-guide block; 3- Punch; 4-pressing tube; 41-rotating seat; 421-first outer gear ring; 422-gear; 423-motor; 5- Punch head; 6-cutting mechanism; 61-rotating drum; 62-second outer gear ring; 63-transverse through hole; 64-blade; 65-second electric push rod; 66-third electric push rod; 71-friction belt roll; 72-friction belt; 73-mounting base; 741-upper arc tube; 742-telescopic tube; 743-lower arc tube; 751-first electric push rod; 752-connecting plate; 753-airbag. DETAILED DESCRIPTION

[0018] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0019] Embodiment 1: This embodiment provides a technical solution: a punching device for high-purity aluminum-scandium target material, such as Figures 1 to 3 As shown, it includes a base 1, a punch 3, a pressing tube 4, a punch head 5, a friction belt mechanism and a driving mechanism.

[0020] like Figure 1 As shown, the base 1 serves as the base part of the entire device, and it has strong impact resistance and stability. It can be designed into various structures according to actual needs. However, it should be noted that the base 1 must have a plane for placing the workpiece, and a circular through hole is opened at the center of the plane. The circular through hole is used to avoid the punching head 5 that punches down to prevent the punching head 5 from interfering with the base 1. If necessary, tooling for positioning and fixing the workpiece can also be set on the plane of the base 1 as needed; a chamber is set on the lower side of the plane, and the circular through hole needs to be connected to the chamber. An inclined material guide plate 11 fixed to the base 1 is set on the lower side of the circular through hole. The inclined material guide plate 11 is located in the chamber. The inclined material guide plate 11 is used to guide and discharge the fragments generated by punching the workpiece for easy collection.

[0021] like Figure 1 As shown, the punch 3 is installed above the base 1 through a mounting seat. The punch 3 can be a hydraulic telescopic machine or other similar equipment. The structure of the mounting seat can be set according to needs. A mounting plate is fixed to the output end of the punch 3.

[0022] like Figure 1 and Figure 2 As shown, the pressing tube 4 is rotatably mounted on the lower surface of the mounting plate through a rotating seat 41, and the output ends of the pressing tube 4 and the punch 3 correspond vertically to the circular through hole. The punch head 5 is mounted on the lower end of the pressing tube 4, and the punch head 5 can be detachably connected to the pressing tube 4 by threaded connection to facilitate subsequent replacement or maintenance, and the outer diameter of the punch head 5 is larger than the outer diameter of the pressing tube 4. This arrangement can avoid friction with the circular hole of the workpiece when the pressing tube 4 rotates.

[0023] like Figures 2 to 4 As shown, the friction belt mechanism is arranged on the pressing tube 4, and the friction belt mechanism includes at least one friction belt roll 71, and in this embodiment, there are three friction belt rolls 71, which are formed by winding and rolling up the friction belt 72. The friction belt roll 71 is installed on the outer side of the pressing tube 4 through the installation base 73, so that the friction belt 72 on the friction belt roll 71 can be gradually spread out. The pressing tube 4 has a guide assembly arranged along its axial direction, and the guide assembly is used for the friction belt roll 71 to pass through. The guide assembly includes an upper arc tube 741, a telescopic tube 742 and a lower arc tube 743 arranged in sequence from top to bottom. The upper arc tube 741 is fixed to the pressing tube 4 and communicates with the outer side of the pressing tube 4, and the lower arc tube 743 is fixed to the pressing tube 4 and communicates with the outer side of the pressing tube 4. The lower end of the telescopic tube 742 is fixedly connected to the lower arc tube 743, and the telescopic tube 742 corresponds to the upper arc tube 741 vertically.

[0024] The friction belt 72 on the friction belt roll 71 passes through the upper port of the guide assembly (the end of the upper arc tube 741) and extends from the lower port of the guide assembly (the end of the lower arc tube 743) to form a friction portion. During operation, the friction portion contacts the edge of the lower port of the circular hole on the workpiece. The friction belt 72 is composed of multiple soft metal wires, that is, a metal brush, which can effectively grind off the burrs on the edge of the lower port of the circular hole. In other embodiments, the friction belt 72 can also be a grinding tool with a rough surface, such as a sandpaper strip.

[0025] like Figure 3 and Figure 4 As shown, the friction belt mechanism also includes a pusher assembly, which is used to push the friction belt 72 out of the lower arc tube 743 to adjust the length of the friction part, and the friction part can also be stored in the lower arc tube 743 to avoid interference with the workpiece. The pusher assembly includes a first electric push rod 751 fixed to the mounting plate, and the telescopic end of the first electric push rod 751 is rotatably mounted with a connecting plate 752, and the upper end of the telescopic tube 742 is fixedly connected to the connecting plate 752, that is, when the telescopic end of the first electric push rod 751 is extended and retracted, the telescopic tube 742 will be extended and retracted accordingly, and the side wall of the telescopic tube 742 is installed with an airbag 753, and the airbag 753 is controlled to expand and contract by an external air pump. When the airbag 753 expands, it will squeeze and fix the friction belt 72, and when it contracts, the friction belt 72 will be loosened.

[0026] During operation, compressed air can first be injected into the airbag 753 through an air pump to expand the airbag 753 and fix the friction belt 72 tightly, and then the telescopic end of the first electric push rod 751 is extended to send the friction belt 72 to one side of the lower arc tube 743 to a certain size, so that the length of the friction part can be adjusted. When use is completed, the telescopic end of the first electric push rod 751 can be retracted to retract the friction part into the lower arc tube 743.

[0027] like Figure 2 As shown, the driving mechanism is installed on the mounting plate, which is used to drive the pressing tube 4 to rotate. The driving mechanism includes a motor 423 installed on the mounting plate, a gear 422 is fixed to the output end of the motor 423, a first outer gear ring 421 is fixed to the outer side of the pressing tube 4, and the first outer gear ring 421 is meshed and connected with the gear 422. When the motor 423 is running to drive the gear 422 to rotate, the gear 422 cooperates with the first outer gear ring 421, and the pressing tube 4 can be driven to rotate as a whole, and the friction part will also rotate accordingly, and the friction part rubs against the edge of the lower port of the circular hole to perform burr removal.

[0028] Embodiment 2: This embodiment is further optimized on the basis of embodiment 1, and the same parts as the above technical solution will not be repeated here. Figure 2 , Figure 3 and Figure 5As shown, in order to better realize the present invention, the following setting is particularly adopted: in this embodiment, a cutting mechanism 6 is additionally provided, which is used to cut off the worn friction part to ensure the good working condition of the friction part and effectively remove the burrs.

[0029] The cutting mechanism 6 includes a rotating drum 61 rotatably sleeved on the outside of the pressing tube 4, the inner diameter of the rotating drum 61 is clearance-matched with the outer diameter of the pressing tube 4, the outer diameter of the rotating drum 61 is smaller than the outer diameter of the punching head 5, and a transverse through hole 63 for avoiding the friction part is opened on the rotating drum 61. The number of the transverse through holes 63 is consistent with the number of the friction parts, and a blade 64 is arranged on one side of the transverse through hole 63. A second outer gear ring 62 is fixed on the outside of the rotating drum 61. The second outer gear ring 62 is consistent in size with the first outer gear ring 421, and the gear teeth of the second outer gear ring 62 and the first outer gear ring 421 correspond one by one. The second outer gear ring 62 and the first outer gear ring 421 are meshed and connected with the gear 422 at the same time. A second electric push rod 65 is fixed on the mounting plate, and the motor 423 is installed at the telescopic end of the second electric push rod 65. The second electric push rod 65 is used to adjust the axial position of the gear 422 to adjust whether the gear 422 is meshed with the first outer gear ring 421. A third electric push rod 66 is fixed to the lower side of the mounting plate for pressing the pressure tube 4 tightly.

[0030] The thickness of the gear 422 is not less than the total thickness of the first outer gear ring 421 and the second outer gear ring 62. When the gear 422 is meshed with the first outer gear ring 421 and the second outer gear ring 62 at the same time, the motor 423 is operated, and the motor 423 can drive the pressing tube 4 to rotate as a whole; when the gear 422 is only meshed with the second outer gear ring 62, and the pressing tube 4 is tightly fixed by extending the telescopic end of the third electric push rod 66 to prevent the pressing tube 4 from rotating, the motor 423 is then operated, and the motor 423 only drives the rotating drum 61 to rotate. The rotating rotating drum 61, that is, the friction belt 72 extending from the lower arc tube 743 is cut off by the blade 64, and then the second electric push rod 65 is operated to make the gear 422 meshed with the first outer gear ring 421 and the second outer gear ring 62 again at the same time, and the pressing tube 4 can continue to be driven to rotate.

[0031] When in use, by loosening the clamping of the airbag 753 on the friction belt 72, then contracting the telescopic end of the first electric push rod 751, and then fixing the friction belt 72 through the airbag 753, the contact fixed position of the airbag 753 and the friction belt 72 can be replaced, that is, by extending the telescopic end of the first electric push rod 751, the friction belt 72 can be further pushed out.

[0032] Embodiment 3: This embodiment is further optimized on the basis of embodiment 1, and the same parts as the above technical solutions will not be repeated here. Figure 1 and Figure 6As shown, in order to better realize the present invention, the following setting is particularly adopted: in this embodiment, a support avoidance mechanism 2 is added, and its setting can form a cavity on the lower side of the circular hole of the workpiece, so that the friction part can extend to the lower side of the circular hole of the workpiece, thereby ensuring the burr removal effect.

[0033] The support and avoidance mechanism 2 includes a circular groove 21 opened on the upper surface of the base 1, and at least two base blocks 22 are distributed in a ring shape in the circular groove 21. Multiple base blocks 22 are spliced ​​to form an annular structure, and the inner hole diameter of the annular structure is slightly larger than the diameter of the circular hole required to be punched in the workpiece. The multiple base blocks 22 are all displaced radially along the circular through hole. The support and avoidance mechanism 2 also includes a mobile power component that drives the multiple base blocks 22 to displace synchronously.

[0034] The mobile power assembly includes an annular groove 231 which is opened on the upper surface of the base 1 and is concentric with the circular through hole. The annular groove 231 is connected to the circular groove 21 through a long inner hole. A third outer gear ring 232 is rotatably installed in the annular groove 231. A pull rod 233 is fixed to the outer side of the base block 22 and extends to the long inner hole. A spring 234 is installed between the base block 22 and the outer inner wall of the circular groove 21. A pull rope 235 is fixed between the outer end of the pull rod 233 and the third outer gear ring 232. A fourth electric push rod 236 is fixed to the outer side of the base 1. A rack 237 is fixed to the telescopic end of the fourth electric push rod 236, and the rack 237 is meshed and connected with the third outer gear ring 232. The annular groove 231 is sealed by a cover plate.

[0035] Before the friction part extends out of the lower arc tube 743, the fourth electric push rod 236 is operated to drive the rack 237 to move, and further drive the third outer gear ring 232 to rotate, and the multiple base blocks 22 will be pulled outward and displaced synchronously under the cooperation of the pull rope 235 and the pull rod 233, and the spring 234 is compressed. After the multiple base blocks 22 move outward, a cavity is formed between the inner sides of the multiple base blocks 22; when the fourth electric push rod 236 is operated in reverse, the multiple base blocks 22 will be reset under the action of the spring 234, and can support the four sides of the workpiece where the punching position is to be located.

[0036] In order to increase the stability of the base block 22 , a guide groove 241 is provided on the base block 22 . A guide block 242 fixed to the bottom of the circular groove 21 is provided in the guide groove 241 . The setting of the guide groove 241 and the guide block 242 can also limit the moving stroke of the base block 22 .

[0037] Embodiment 4: This embodiment provides a technical solution: a punching method for a high-purity aluminum-scandium target punching device as in Embodiment 3, such as Figures 1 to 5 As shown, the following steps are included: Step 1: Install the workpiece: Align the position where the workpiece needs to be punched with the position of the circular through hole. If there is a positioning and fixing tool, the workpiece can be fixed; Step 2: hole forming: operating the punch 3, driving the punch head 5 to move downward, punching a circular hole at a corresponding position of the workpiece, and allowing the punch head 5 to pass through the circular through hole; Step 3: Expand the support avoidance mechanism 2: operate the fourth electric push rod 236 to make the multiple base blocks 22 move radially outward to form a cavity under the circular hole; Step 4, extending the friction part: injecting compressed air into the airbag 753 through the air pump to clamp the friction belt 72, and extending the telescopic end of the first electric push rod 751, so that the friction part extends out of the lower arc tube 743 and contacts the edge of the lower port of the circular hole; Step 5, deburring: the pressing tube 4 is driven to rotate by the driving mechanism, and the friction part contacts and rubs with the edge of the lower port of the circular hole to achieve deburring; Step 6: Reset: Contract the telescopic end of the first electric push rod 751 to drive the friction part to contract to the lower arc tube 743, operate the punch 3, and drive the punch head 5 to move upward to the initial position.

[0038] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A punching device for high-purity aluminum-scandium target, characterized in that: include: A base (1), wherein the base (1) is provided with a circular through hole; A punch (3), the punch (3) being mounted above the base (1) via a mounting seat, and a mounting plate being fixed to an output end of the punch (3); A pressing tube (4), the pressing tube (4) being rotatably mounted on the lower surface of the mounting plate via a rotating seat (41), and the pressing tube (4) being vertically corresponding to the circular through hole; A punching head (5), the punching head (5) being mounted on the lower end of the pressing tube (4), and the outer diameter of the punching head (5) being larger than the outer diameter of the pressing tube (4); A friction belt mechanism, the friction belt mechanism being arranged on a pressure tube (4), the friction belt mechanism comprising at least one friction belt roll (71), the friction belt roll (71) being installed on the outer side of the pressure tube (4) via an installation base (73), the pressure tube (4) having a guide assembly arranged along its axial direction, and two ports of the guide assembly being respectively connected to the outer side of the pressure tube (4), the friction belt (72) on the friction belt roll (71) passing through the upper port of the guide assembly and extending out from the lower port of the guide assembly, thereby forming a friction portion; A driving mechanism, the driving mechanism being mounted on the mounting plate and used to drive the pressing tube (4) to rotate so as to achieve burr removal by friction between the friction portion and the edge of the lower port of the circular hole; A cutting mechanism (6), wherein the cutting mechanism (6) is arranged on the outside of the pressing tube (4) and is used to cut off the worn friction part.

2. The punching device for high-purity aluminum-scandium target according to claim 1, characterized in that: The guide assembly comprises an upper arc tube (741), a telescopic tube (742) and a lower arc tube (743) which are arranged in sequence from top to bottom, the upper arc tube (741) being fixed to the pressing tube (4) and being in communication with the outer side of the pressing tube (4), the lower arc tube (743) being fixed to the pressing tube (4) and being in communication with the outer side of the pressing tube (4), the lower end of the telescopic tube (742) being fixedly connected to the lower arc tube (743), and the telescopic tube (742) and the upper arc tube (741) corresponding vertically; The friction belt mechanism also includes a pushing assembly, which is used to push the friction belt (72) out of the lower arc tube (743) to adjust the length of the friction part. The pushing assembly includes a first electric push rod (751) fixed to a mounting plate, the telescopic end of the first electric push rod (751) is rotatably mounted with a connecting plate (752), the upper end of the telescopic tube (742) is fixedly connected to the connecting plate (752), the side wall of the telescopic tube (742) is mounted with an air bag (753), and the air bag (753) is controlled to expand and contract by an external air pump to achieve fixing and loosening of the friction belt (72) in the telescopic tube (742).

3. The punching device for high-purity aluminum-scandium target according to claim 1, characterized in that: The driving mechanism comprises a motor (423) mounted on a mounting plate, a gear (422) being fixed to an output end of the motor (423), a first outer gear ring (421) being fixed to the outer side of the pressure tube (4), and the first outer gear ring (421) being meshingly connected to the gear (422).

4. The punching device for high-purity aluminum-scandium target according to claim 3, characterized in that: The cutting mechanism (6) comprises a rotating drum (61) rotatably sleeved on the outside of the pressing tube (4), the rotating drum (61) being provided with a transverse through hole (63) for avoiding the friction part, a blade (64) being provided on one side of the transverse through hole (63), a second outer gear ring (62) being fixed on the outside of the rotating drum (61), the second outer gear ring (62) corresponding to the gear teeth of the first outer gear ring (421) one by one, the second outer gear ring (62) and the first outer gear ring (421) being meshed and connected with the gear (422) at the same time, a second electric push rod (65) being fixed on the mounting plate, the motor (423) being mounted on the telescopic end of the second electric push rod (65), the second electric push rod (65) being used to adjust the axial position of the gear (422) so as to adjust whether the gear (422) is meshed with the first outer gear ring (421); a third electric push rod (66) for pressing and fixing the pressing tube (4) is fixed on the lower side of the mounting plate.

5. The punching device for high-purity aluminum-scandium target according to claim 1, characterized in that: A support avoidance mechanism (2) is arranged outside the circular through hole, the support avoidance mechanism (2) comprising a circular groove (21) formed on the upper surface of the base (1), at least two base blocks (22) being distributed in an annular manner in the circular groove (21), the plurality of base blocks (22) all being displaced along the radial direction of the circular through hole, and the support avoidance mechanism (2) further comprising a moving power component for driving the plurality of base blocks (22) to displace synchronously.

6. The punching device for high-purity aluminum-scandium target according to claim 5, characterized in that: The mobile power assembly comprises an annular groove (231) which is opened on the upper surface of the base (1) and is concentric with the circular through hole. The annular groove (231) is connected to the circular groove (21) via a long inner hole. A third outer gear ring (232) is rotatably mounted in the annular groove (231). A pull rod (233) is fixed to the outer side of the base block (22) and extends to the long inner hole. A spring (234) is installed between the base block (22) and the outer inner wall of the circular groove (21). A pull rope (235) is fixed between the outer end of the pull rod (233) and the third outer gear ring (232). A fourth electric push rod (236) is fixed to the outer side of the base (1). A rack (237) is fixed to the telescopic end of the fourth electric push rod (236), and the rack (237) is meshingly connected with the third outer gear ring (232).

7. The punching device for high-purity aluminum-scandium target according to claim 5, characterized in that: The base block (22) is provided with a guide groove (241), and a guide block (242) fixed to the bottom of the circular groove (21) is arranged in the guide groove (241).

8. The punching device for high-purity aluminum-scandium target according to claim 1, characterized in that: An inclined material guide plate (11) fixed to the base (1) is provided on the lower side of the circular through hole.

9. The punching device for high-purity aluminum-scandium target according to claim 1, characterized in that: The friction belt (72) is composed of a plurality of soft metal wires.

10. A punching method for a high-purity aluminum-scandium target punching device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Install the workpiece: Align the position where the workpiece needs to be punched with the position of the circular through hole; Step 2: hole forming: operating the punch (3) to drive the punch head (5) to move downward, punching a circular hole at a corresponding position of the workpiece, and allowing the punch head (5) to pass through the circular through hole; Step 3: Expanding the support avoidance mechanism (2): operating the fourth electric push rod (236) to cause the plurality of base blocks (22) to move radially outward to form a cavity below the circular hole; Step 4, extending the friction part: injecting compressed air into the airbag (753) through an air pump to clamp the friction belt (72), and extending the telescopic end of the first electric push rod (751) so that the friction part extends out of the lower arc tube (743) and contacts the edge of the lower end of the circular hole; Step 5, deburring: the pressing tube (4) is driven to rotate by the driving mechanism, and the friction part contacts and rubs with the edge of the lower end of the circular hole to achieve deburring; Step 6: Reset: Contract the telescopic end of the first electric push rod (751) to drive the friction part to contract to the lower arc tube (743), operate the punch (3), and drive the punch head (5) to move upward to the initial position.

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