Solid target piece disassembling device and method

Abstract

The invention relates to the technical field of medical isotope production, in particular to a solid target piece disassembling device and method. The disassembling device comprises a pushing assembly, a first cutting assembly and a second cutting assembly. The pushing assembly comprises a transverse moving module, a tray and a moving frame, the tray and the moving frame are both installed on the transverse moving module, a groove is formed in the moving frame, and the tray is located on the lower side of the groove; the first cutting assembly comprises a support, a longitudinal moving module and a flywheel, the support is located on the upper side of the pushing assembly, a containing groove for installing a target piece is formed in the support, the longitudinal moving module is installed on the support and is perpendicular to the transverse moving module, and the flywheel is installed on the longitudinal moving module; the second cutting assembly comprises a driving mechanism and a cutting piece, the driving mechanism is located at the tail end of the transverse moving module, and the cutting piece is installed on the bottom side of the driving mechanism. The problems that in the prior art, the safety risk is high, the efficiency is low, disassembling is difficult, and the integrity of the target material is difficult to guarantee are solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical isotope production, and in particular to a solid target disassembly device and method. Background Art

[0002] Medical radioactive isotopes are widely used in medical diagnosis and treatment. There are few types of natural radionuclides in nature, so most medical radioactive isotopes are artificially manufactured, such as accelerator production, reactor production, and isotope generator production. The high-energy beam generated by the accelerator can obtain the target nuclide by bombarding various target materials. Target materials are generally divided into solid target materials and liquid target materials. In order to ensure the heat dissipation effect during the irradiation process, the solid target material will be welded to the copper support to form a target as a whole, and ensure that the two fit closely, so as to use the good thermal conductivity of copper and circulating cooling water to cool the target material.

[0003] However, in the preparation process of medical isotopes, dissolving the irradiated target and extracting the required isotopes is a very important step, and the integrity of the target disassembled from the copper tray will directly affect the final isotope yield. Due to the structure of the solid target, it is difficult to separate the target from the copper tray without special tools and disassembly methods, especially when the target and the copper tray are radioactive as a whole, manual separation is neither safe nor efficient.

[0004] In the existing technology, the separation of solid target and copper support mainly relies on manual operation and special tools. This method is not only inefficient, but also difficult to ensure the integrity of the target during the disassembly process. At the same time, due to the presence of radioactive substances, it poses a serious threat to the health of operators. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the embodiments of the present invention is to provide a solid target disassembly device and method to solve the problems of high safety risk, low efficiency, difficulty in disassembly and difficulty in ensuring the integrity of the target material in the prior art. Through automated disassembly, the safety and efficiency of the disassembly process are improved, while the integrity of the target material is ensured, thereby improving the yield and quality of isotopes.

[0006] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] A solid target disassembly device comprises: a pushing assembly, a first cutting assembly and a second cutting assembly; the pushing assembly comprises a transverse movement module, a tray and a movable frame, the tray and the movable frame are both mounted on the transverse movement module, a groove is provided on the movable frame, and the tray is located at the lower side of the groove; the first cutting assembly comprises a bracket, a longitudinal movement module and a flywheel, the bracket is located on the upper side of the pushing assembly, a placement groove for mounting the target is provided on the bracket, the longitudinal movement module is mounted on the bracket and is perpendicular to the transverse movement module, and the flywheel is mounted on the longitudinal movement module; the second cutting assembly comprises a driving mechanism and a cutting piece, the driving mechanism is located at the end of the transverse movement module, the cutting piece is mounted on the bottom side of the driving mechanism, and the cutting piece cuts the target into the tray when it descends.

[0008] Among them, the lateral movement module of the push component is responsible for accurately pushing the target to the predetermined position to ensure the accuracy of cutting. Driven by the longitudinal movement module, the flywheel of the first cutting component cuts along the joint surface of the target and the copper support to initially separate the target and the copper support. The driving mechanism of the second cutting component provides power to lower the cutting piece to achieve the final separation of the target, making the entire disassembly process automated and improving disassembly efficiency and safety.

[0009] Optionally, the disassembly device also includes a base, and the transverse moving module and the bracket are both installed on the base. The bracket is in the shape of a U-shaped U-shaped bracket, spanning the transverse moving module. The driving mechanism is also installed on the base and located at the end of the transverse moving assembly. The structure of the entire device is more stable, and the U-shaped bracket provides additional support to ensure stability and accuracy during the cutting process.

[0010] Optionally, the traverse module is a traverse linear module, including a traverse motor, a track, a bearing seat, a linear screw, a screw nut and a moving seat. The bearing seat includes an inner bearing seat and an outer bearing seat mounted on the base, and the two ends of the linear screw are rotatably mounted on the inner bearing seat and the outer bearing seat respectively. The traverse motor is mounted on the outer end of the linear screw, and the moving seat is mounted on the linear screw through the screw nut and is slidably mounted on the track. This structure enables the traverse module to move smoothly and accurately. The design of the bearing seat reduces friction and improves the smoothness of movement. The setting of the traverse motor ensures the power source of the traverse module, so that the entire pushing process can be automatically controlled.

[0011] Optionally, the mobile rack is installed on the mobile seat, and the shape of the groove of the mobile rack matches the shape of the copper tray to achieve fixed constraint on the copper tray. The depth of the groove is the thickness of the target piece. There is an opening in the middle of the groove, and the outline of the opening is larger than the outline of the target piece, so that during the second cutting, the separated target piece can fall smoothly into the tray. The tray is placed on the mobile seat and aligned with the groove, ensuring the stability and accuracy of the target piece during the cutting process and ensuring that the target piece will not shift during the cutting process.

[0012] Optionally, the transverse movement module further includes a limit block, including an outer transverse movement limit block and an inner transverse movement limit block, wherein the outer transverse movement limit block is located on the outer end side of the track, and the inner transverse movement limit block is located on the inner end side of the track. The use of the limit block ensures the extreme position and reversal of the transverse movement module during the movement process, prevents the transverse movement module from excessive movement, resulting in damage to the equipment or reduced cutting accuracy, and improves the safety and reliability of the entire device.

[0013] Optionally, the longitudinal movement module is a longitudinal movement linear module, the end of the longitudinal movement linear module is a longitudinal movement motor, and a motor seat is also installed on the longitudinal movement linear module, and a cutting motor driving the flywheel to rotate is installed on the motor seat. This design allows the cutting action of the flywheel to be precisely controlled, and the coordinated use of the longitudinal movement motor and the cutting motor ensures the stability and accuracy of the flywheel during the cutting process.

[0014] Optionally, the top of the bracket is a bearing plate, on which a slide groove is provided, the slide groove is perpendicular to the transverse module, the flywheel is located at the lower side of the bearing plate, and the output shaft of the cutting motor passes through the slide groove and is connected to the flywheel. This makes the installation and positioning of the flywheel more precise, and the slide groove facilitates the connection between the cutting motor and the flywheel, thereby improving the stability and maintenance convenience of the entire device.

[0015] Optionally, the longitudinal movement module further includes a limit block, which includes an inner longitudinal movement limit block and an outer longitudinal movement limit block, which are located at both ends of the longitudinal movement module and are used to limit the motor seat. The use of the limit block ensures the movement range of the motor seat on the longitudinal movement module, prevents the motor seat from excessive movement, resulting in damage to the equipment or reduced cutting accuracy, and improves the safety and reliability of the entire device.

[0016] Optionally, the driving mechanism is an electric-controlled hydraulic press, which has a hydraulic rod, and the cutting piece is installed at the lower end of the hydraulic rod. The cutting piece is a rectangular knife array, which includes a knife holder and a blade, and the profile of the blade is smaller than the cross section of the target piece. The cutting piece can accurately separate the target piece, and the design of the rectangular knife array improves the efficiency and accuracy of cutting, and is convenient for subsequent processing.

[0017] The embodiment of the present invention also provides a disassembly method using the above-mentioned solid target disassembly device: first, the tray is placed on the lower side of the mobile frame and faces the groove of the mobile frame, and the transverse movement module drives the mobile frame and the tray to move to the lower side of the placement groove of the bracket. Next, the copper tray with the target is installed in the placement groove, and the target end of the copper tray enters the groove of the mobile frame. This step fixes the target in an appropriate position and prepares for cutting. Then, the flywheel rotates and, driven by the longitudinal movement component, cuts off the copper tray and the target that enter the groove. This step achieves the initial separation of the target and the copper tray. Finally, the transverse movement module continues to drive the mobile frame and the tray to move to the lower side of the second cutting component, and the cut copper tray and target are located in the groove of the mobile frame and follow the movement. The driving mechanism drives the cutting member to descend, separates the target and the copper tray, and the cut target falls into the tray. This step completes the final separation of the target and ensures the integrity and safety of the target.

[0018] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0019] The device completes the separation between the solid target and the copper support, and ensures the integrity of the target, avoiding the problem of reduced isotope yield due to incomplete target separation. At the same time, the automation of the target disassembly device can avoid manual operation and reduce the risk of radiation to the staff. Therefore, the fully automatic target disassembly process is realized, avoiding manual operation, reducing the risk of radiation to personnel, and improving safety performance.

[0020] Positioning by the limit block is more accurate than traditional sensor positioning, and there is no need to worry about radiation affecting the sensor's signal transmission, which improves the working stability and service life of the target removal device. Secondly, the target does not require a separate clamping device, and the target positioning only relies on the fixed position placement groove. The overall operation process is simple and the production cost is low.

[0021] The overall structure of the target dismantling device is compact, small in size, and simple in structure. It can effectively save space and can be used in smaller spaces such as hot rooms and glove boxes. Moreover, by changing the shape of the groove, it can be suitable for dismantling targets of different shapes.

[0022] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration.

[0024] Figure 1 It is a schematic diagram of the copper support and the target;

[0025] Figure 2 is an overall schematic diagram of a device provided by an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of a rectangular knife array provided by an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of a push component provided by an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of a bracket provided by an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of a mobile rack provided by an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of the coordination of the copper support, the bracket, the mobile rack and the tray provided in an embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of a disassembly process provided by an embodiment of the present invention;

[0032] In the figure: 1. hydraulic rod; 2. electric hydraulic press; 3. rectangular knife array; 4. inner bearing seat; 5. inner limit block for transverse movement; 6. base; 7. inner limit block for longitudinal movement; 8. bracket; 9. copper support; 10. outer limit block for transverse movement; 11. linear screw; 12. outer bearing seat; 13. transverse linear module; 14. moving seat; 15. screw nut; 16. slide; 17. cutting motor; 18. longitudinal motor; 19. motor seat; 20. longitudinal linear module; 21. target; 22. knife support; 23. blade; 24. tray; 25. flywheel; 26. coupling; 27. outer limit block for longitudinal movement; 28. moving frame; 29. ​​groove; DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Terminology explanation:

[0035] The solid target is welded with a metal target and a copper support, thereby ensuring good contact between the target and the copper support, so that the copper support can more effectively take away the high temperature generated during the irradiation of the target. Figure 1 As shown, the target is composed of a target 21 and a copper support 9, wherein the copper support 9 has a water inlet and outlet inside, and water flows under the target to take away heat. The target 21 is relatively small in thickness, only 1 mm, and is completely sunk into the groove of the copper support and welded to the bottom of the groove, so the two are tightly combined.

[0036] Example 1

[0037] In order to peel the target from the copper support and take automated disassembly into consideration, this embodiment proposes an automatic target disassembly device. The main inventive concept is to first use a flywheel to cut the joint surface of the target and the copper support to obtain a 1mm thick target and a 1mm thick copper support around the target, and then use a rectangular knife array consistent with the outer contour size of the target to shear the 1mm thick target from the 1mm thick copper support to obtain a complete target.

[0038] Specific target removal device such as Figure 2 As shown. It mainly consists of an electric hydraulic press 2, a longitudinal linear module 20, a transverse linear module 13, a base 6, a bracket 8, a copper support 9, a tray 24, a flywheel 25, and a rectangular knife array 3. The base 6 is the main bracket, and all other components of the target removal device are installed on the base 6. The hydraulic rod 1 on the electric hydraulic press 2 will drive the rectangular knife array 3 to perform the final shearing on the target. The rectangular knife array is as shown in FIG. Figure 3 As shown, it is composed of a knife holder 22 and four blades 23.

[0039] In addition, before the final shearing, the copper support body needs to be cut with a flywheel to obtain a 1mm thick target and copper support part. The cutting principle and composition of the flywheel are as follows:

[0040] The flywheel 25 is installed on the cutting motor 17, and the cutting motor 17 is installed on the motor seat 19. The motor seat 19 and the longitudinal linear module 20 form a mobile platform, and the flywheel 25 is below the bracket 8. Therefore, a slide groove 16 in the same direction as the longitudinal linear module 20 is opened on the bracket 8, so that the flywheel 25 can be normally translated along the axial direction of the longitudinal linear module 20 under the drive of the longitudinal motor 18, thereby achieving the purpose of cutting the target (the longitudinal motor 18 and the screw rod are connected by a coupling 26).

[0041] There is a longitudinal inner limit block 7 and a longitudinal outer limit block 27 at each end of the longitudinal linear module 20. When the motor seat 19 collides with the two, the current of the longitudinal motor 18 will increase, thereby controlling the longitudinal motor 18 to stop rotating or reversely rotate to make the flywheel retreat, thereby completing the first cutting of the target.

[0042] like Figure 5 , Figure 7 As shown, the bracket 8 is also provided with a placement slot for placing the copper tray 9, and the placement position is as follows Figure 2 As shown, the manipulator can directly clamp the two ends of the target and place it in the groove. At the same time, before the target is placed, the target tray 24 should be sent to the bottom of the groove where the copper tray 9 is placed. The movement of the tray is controlled by the transverse linear module 13. Similarly, there is an inner transverse limit block 5 and an outer transverse limit block 10 at each end of the linear module. When the transverse linear module 13 stops at the outer transverse limit block, the tray 24 can be taken and placed. When it stops at the inner transverse limit block, the hydraulic press can drive the rectangular knife array 3 to perform the final cutting on the target. When it stops at the bottom of the copper tray 9 placement groove, the copper tray 9 can be placed in the placement groove. Because when the target is placed in the groove, it is also necessary to ensure that the end of the target is completely entered into the moving frame above the tray (such as Figure 6 shown).

[0043] like Figure 4The figure shows a schematic diagram of the transverse linear module 13 and the tray part. The transverse module is the transverse linear module 13, which includes a transverse motor, a track, a bearing seat, a linear screw 11, a screw nut 15 and a moving seat 14. The bearing seat includes an inner bearing seat 4 and an outer bearing seat 12 mounted on the base, and the two ends of the linear screw are rotatably mounted on the inner bearing seat and the outer bearing seat respectively. The transverse motor is mounted on the outer end of the linear screw, and the moving seat is mounted on the linear screw through the screw nut and is slidably mounted on the track. The movable frame is installed on the movable seat 14. When the motor rotates, the nut mounting seat will move the movable frame along the guide rail, and the tray 24 is placed on the nut movable seat 14 and directly below the movable frame, that is, the above-mentioned transverse linear module 13 controls the movement of the tray, and because the upper end surface of the movable frame is provided with a groove 29 matching the end of the target, when the tray moves to directly below the groove on the bracket 8 where the copper tray 9 is placed, the target can be placed in the groove on the bracket 8 where the copper tray 9 is placed, so that the bracket 8 constrains the large end of the target, and the groove 29 of the movable frame constrains the target end of the target, so that when the flywheel 25 cuts the copper tray, the cutting accuracy is guaranteed and the 1mm target and copper tray after cutting can be constrained in the groove 29 of the movable frame, so that the subsequent rectangular knife array 3 can accurately shear the target and finally separate the target from the copper tray.

[0044] Example 2

[0045] The specific target disassembly process is as follows: Figure 8 As shown, when the target needs to be disassembled, the tray 24 is first placed on the movable seat 14 by a manipulator so that the groove 29 on the movable frame 28 faces the tray 24, as shown in FIG. Figure 8 Shown in the middle left picture.

[0046] Then the motor of the transverse linear module 13 rotates, so that the lead screw nut 15 moves with the tray 24 and the mobile frame 28 to the position just below the placement groove on the bracket 8 where the copper tray 9 is placed and stops. The manipulator clamps the copper tray 9 and puts it into the placement groove on the bracket 8. At the same time, the target end of the copper tray 9 enters the groove 29 on the mobile frame, so that the copper tray 9 is constrained. Figure 8 As shown in the middle figure.

[0047] Then the cutting motor 17 will drive the flywheel 25 to rotate, and the rotation of the longitudinal motor 18 will cause the flywheel 25 to make horizontal cutting along the linear module. When the motor seat 19 hits the longitudinal inner limit block 7, the longitudinal motor 18 reverses, and the flywheel 25 returns to the original path and stops the longitudinal motor 18 and the cutting motor 17 when the motor seat 19 hits the longitudinal outer limit block 27. At this time, the first cutting has been completed.

[0048] Then the motor of the lateral linear module 13 rotates, and the screw nut 15 moves with the tray 24 and the moving frame 28 and the cut 1mm thick target 21 and the copper support 9 to the bottom of the rectangular knife array 3, and the moving seat 14 will collide with the lateral inner limit block 5, so that the motor of the lateral linear module 13 stops rotating. Figure 8 As shown in the middle right figure, the hydraulic press 2 is then started, and driven by the hydraulic rod 1, the rectangular knife array 3 thereon descends and cuts the target 21. After cutting, the target 21 will fall into the tray 24, and then the motor of the transverse linear module 13 is reversed, so that the tray 24 returns with the target 21 and stops at the transverse outer limit block 10. After stopping, the tray 24 can be taken out by a robot to obtain a complete target 21.

[0049] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A solid target disassembly device, characterized in that: include: A pushing assembly, a first cutting assembly, and a second cutting assembly; The pushing assembly includes a transverse moving module, a tray and a moving frame, wherein the tray and the moving frame are both mounted on the transverse moving module, a groove is provided on the moving frame, and the tray is located at the lower side of the groove; The first cutting assembly includes a bracket, a longitudinal movement module and a flywheel, wherein the bracket is located on the upper side of the pushing assembly, a placement slot for mounting a target is provided on the bracket, the longitudinal movement module is mounted on the bracket and is perpendicular to the transverse movement module, and the flywheel is mounted on the longitudinal movement module; The second cutting assembly includes a driving mechanism and a cutting piece. The driving mechanism is located at the end of the transverse moving module, and the cutting piece is installed at the bottom side of the driving mechanism. When the cutting piece descends, it cuts the target piece into the tray.

2. The solid target disassembly device according to claim 1, characterized in that: The disassembling device also includes a base, and the transverse moving module and the bracket are both installed on the base. The bracket is in a U-shape and spans the transverse moving module. The driving mechanism is also installed on the base and is located at the end of the transverse moving assembly.

3. The solid target disassembly device according to claim 2, characterized in that: The lateral movement module is a lateral movement linear module, including a lateral movement motor, a track, a bearing seat, a linear screw, a screw nut and a moving seat. The bearing seat includes an inner bearing seat and an outer bearing seat installed on the base. The two ends of the linear screw are rotatably installed on the inner bearing seat and the outer bearing seat respectively. The lateral movement motor is installed on the outer end of the linear screw. The moving seat is installed on the linear screw through the screw nut and is slidably installed on the track.

4. The solid target disassembly device according to claim 3, characterized in that: The movable rack is installed on the movable seat, the groove shape of the movable rack matches the shape of the copper tray, the groove depth is the target thickness, there is an opening in the middle of the groove, the outline of the opening is larger than the outline of the target, and the tray is placed on the movable seat and aligned with the groove.

5. The solid target disassembly device according to claim 3, characterized in that: The transverse movement module also includes a limit block, which includes an outer transverse movement limit block and an inner transverse movement limit block. The outer transverse movement limit block is located on the outer end side of the track, and the inner transverse movement limit block is located on the inner end side of the track.

6. The solid target disassembly device according to claim 1, characterized in that: The longitudinal movement module is a longitudinal movement linear module, the end of the longitudinal movement linear module is a longitudinal movement motor, and a motor seat is also installed on the longitudinal movement linear module. A cutting motor for driving the flywheel to rotate is installed on the motor seat.

7. The solid target disassembly device according to claim 6, characterized in that: The top of the bracket is a bearing plate, a slide groove is provided on the bearing plate, the slide groove is perpendicular to the transverse movement module, the flywheel is located at the lower side of the bearing plate, and the output shaft of the cutting motor passes through the slide groove and is connected to the flywheel.

8. The solid target disassembly device according to claim 6, characterized in that: The longitudinal movement module also includes a limit block, which includes an inner longitudinal movement limit block and an outer longitudinal movement limit block. The inner longitudinal movement limit block and the outer longitudinal movement limit block are located at both ends of the longitudinal movement module and are used to limit the motor seat.

9. The solid target disassembly device according to claim 1, characterized in that: The driving mechanism is an electric-controlled hydraulic press having a hydraulic rod. The cutting piece is installed at the lower end of the hydraulic rod. The cutting piece is a rectangular knife array including a knife support and a blade. The outline of the blade is smaller than the cross section of the target piece.

10. A disassembly method of the solid target disassembly device according to any one of claims 1 to 9, characterized in that: include: The pallet is placed on the lower side of the mobile rack and faces the groove of the mobile rack. The transverse movement module drives the mobile rack and the pallet to move to the lower side of the placement groove of the bracket; The copper support with the target is installed in the placement groove, and the target end of the copper support enters the groove of the moving frame; The flywheel rotates and, driven by the longitudinal moving assembly, cuts off the copper support and target that have entered the groove; The transverse movement module continues to drive the mobile frame and the tray to move to the lower side of the second cutting assembly. The cut copper tray and target piece are located in the groove of the mobile frame and move with it. The driving mechanism drives the cutting piece to descend, separates the target piece and the copper tray, and the cut target piece falls into the tray.

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