Clamp device for metal 3D printing

Abstract

The utility model discloses a clamp device for metal 3D printing. The device is composed of a clamping table, a main clamping plate, an auxiliary clamping plate and the like. First hydraulic cylinders in equipment cavities in the four corners of the clamping table are matched with a bidirectional lead screw and other assemblies, the height of a top plate is accurately adjusted, and the clamping stability is improved; the auxiliary clamping plate is connected with the main clamping plate through the electric rotating shaft, so that the angle can be conveniently adjusted to adapt to printed objects in different shapes; the clamping blocks are connected with the main clamping plate and the auxiliary clamping plate through the universal ball bearings, friction force is increased through the surface anti-skid rubber pads, and objects can be better attached and clamped. Compared with a traditional clamp, the problems that clamping stability is poor, and angle adjustment is inconvenient are effectively solved, the printing precision and efficiency are improved, and the application range of the metal 3D printing technology is expanded.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, specifically a clamping device for metal 3D printing. Background Technology

[0002] In the current booming development of metal 3D printing technology, fixtures, as key auxiliary tools, play a decisive role in printing quality and efficiency. Currently, traditional metal 3D printing fixtures face many problems that urgently need to be addressed.

[0003] Poor clamping stability: Existing fixtures struggle to adapt to complex shapes and sizes when fixing metal printing materials. For example, for metal models with irregular surfaces, traditional fixtures have only one clamping point, making the material prone to shaking and displacement during printing. This severely affects printing accuracy, resulting in large dimensional deviations and rough surfaces in the printed products, failing to meet the manufacturing requirements of high-precision products.

[0004] Insufficient flexibility in angle adjustment: Different metal 3D printing designs have specific requirements for the placement angle of the material. However, the angle adjustment structure of traditional fixtures is complex and inconvenient to operate, often requiring multiple manual disassembly and reassembly to adjust the angle. This not only consumes a lot of time and labor costs, but also easily causes material damage during operation, reducing production efficiency and restricting the printing of complex metal products.

[0005] In conclusion, the development of a fixture for metal 3D printing is urgently needed, as it is of great significance for promoting the development of metal 3D printing technology and improving product quality and production efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a fixture device for metal 3D printing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for metal 3D printing, comprising a clamping table, a main clamping plate, and a secondary clamping plate. Equipment cavities are formed at the four corners of the surface of the clamping table. A base plate is bolted to the bottom of each equipment cavity. A first hydraulic cylinder is bolted to the four corners of the top of the base plate. An equipment box is bolted to the top output end of the first hydraulic cylinder. A bidirectional lead screw is mounted on the bottom center of the equipment box via a bearing. Adjusting blocks are threaded to both ends of the bidirectional lead screw. A linkage rod is provided at the top of the adjusting block. A top block is connected to the top of the linkage rod. A top plate is welded to the top of the top block. An electric rotating shaft is bolted to the top of the top plate. A vertical plate is bolted to the top of the electric rotating shaft. A second hydraulic cylinder is bolted to the surface of the vertical plate. The output end of the second hydraulic cylinder is bolted to the main clamping plate. Secondary clamping plates are provided on the four sides of the main clamping plate. Several clamping blocks are evenly distributed on the surfaces of the main clamping plate and the secondary clamping plates.

[0008] Preferably, the bottom of the inner cavity of the equipment box has limit grooves on both sides of the bidirectional lead screw, the bottom of the adjusting block is engaged and slidably connected with the limit grooves, and a servo motor is bolted to one end of the bidirectional lead screw on the surface of the equipment box, so that the adjusting block can be moved by the servo motor, thereby driving the top plate to move up and down through the linkage rod.

[0009] Preferably, the two ends of the linkage are movably connected to the adjusting block and the top block respectively via rotating shafts.

[0010] Preferably, the equipment box has mounting cavities on both sides of the top, and a telescopic rod is fixed inside the mounting cavity. The top end of the telescopic rod is fixedly connected to the top plate by screws, which makes the top plate more stable during the up and down movement.

[0011] Preferably, the secondary clamping plate is connected to the main clamping plate via an electric rotating shaft, which facilitates adjusting the angle between the secondary clamping plate and the main clamping plate according to the actual shape of the printed item being clamped, thereby better clamping the metal printed item.

[0012] Preferably, the clamping block is connected to the corresponding main clamping plate and auxiliary clamping plate via a universal ball bearing, and the surface of the clamping block is covered with an anti-slip rubber pad, which facilitates better clamping of metal printed items of different shapes.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Enhanced clamping stability: The first hydraulic cylinder within the four corner cavities of the clamping table allows for precise adjustment of the top plate height, accommodating printed items of varying heights. A two-way lead screw, in conjunction with adjusting blocks, linkage rods, and a top block, enables a second, more precise height adjustment of the top plate, while also ensuring smoother lifting and lowering. This prevents items from wobbling or shifting due to clamp instability during printing. Telescopic rods installed on both sides of the top of the equipment box further enhance the stability of the top plate during vertical movement, ensuring printing accuracy and contributing to the production of high-quality products with precise dimensions and smooth surfaces.

[0015] Optimized angle adjustment function: The secondary clamping plate is connected to the main clamping plate via an electric rotating shaft, allowing for quick and convenient adjustment of the angle between the secondary and main clamping plates according to the actual shape of the printed object. This flexible angle adjustment method avoids the tedious manual disassembly and reassembly required by traditional clamps, saving time and labor costs, reducing the risk of material damage during operation, significantly improving production efficiency, and providing strong support for printing complex metal products.

[0016] Enhanced adaptability to different shapes: The clamping blocks are connected to the main and auxiliary clamping plates via universal ball bearings, allowing for flexible rotation and conforming to the surfaces of metal printed objects of various shapes. The anti-slip rubber pads on the clamping block surfaces not only increase friction to prevent slippage but also better distribute clamping forces, avoiding stress concentration that could lead to deformation. This makes the clamping device suitable for metal printing materials of various shapes and surface properties, expanding the application range of metal 3D printing technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main clamping plate and the auxiliary clamping plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the equipment box of this utility model.

[0020] In the diagram: 1. Clamping table; 2. Main clamping plate; 3. Secondary clamping plate; 4. Base plate; 5. First hydraulic cylinder; 6. Equipment box; 7. Two-way lead screw; 8. Servo motor; 9. Adjusting block; 10. Linkage rod; 11. Rotating shaft; 12. Top plate; 13. Telescopic rod; 14. Top block; 15. Electric rotating shaft; 16. Vertical plate; 17. Second hydraulic cylinder; 18. Clamping block; 19. Electric rotating rod; 20. Mounting cavity; 21. Limiting slide groove; 22. Equipment cavity; 23. Universal ball bearing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", 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 utility model 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 limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Please see Figure 1-3 This utility model provides a technical solution: a clamping device for metal 3D printing, including a clamping table 1, a main clamping plate 2, and a secondary clamping plate 3. Equipment cavities 22 are formed at the four corners of the surface of the clamping table 1. A base plate 4 is bolted to the bottom of the inner cavity of the equipment cavity 22. First hydraulic cylinders 5 are bolted to the four corners of the top of the base plate 4. An equipment box 6 is screwed to the top output end of the first hydraulic cylinder 5. A bidirectional lead screw 7 is mounted on the bottom center of the inner cavity of the equipment box 6 via a bearing. Adjusting blocks are threaded to both ends of the bidirectional lead screw 7. 9. The top of the adjusting block 9 is provided with a linkage rod 10. The top of the linkage rod 10 is connected to a top block 14. The top of the top block 14 is welded to a top plate 12. An electric rotating shaft 15 is installed on the top of the top plate 12 by bolts. A vertical plate 16 is installed on the top of the electric rotating shaft 15 by bolts. A second hydraulic cylinder 17 is installed on the surface of the vertical plate 16 by screws. The output end of the second hydraulic cylinder 17 is connected to a main clamping plate 2 by screws. A secondary clamping plate 3 is provided on the four sides of the main clamping plate 2. Several clamping blocks 18 are evenly arranged on the surface of the main clamping plate 2 and the secondary clamping plate 3.

[0025] Furthermore, a limiting groove 21 is provided on both sides of the bidirectional lead screw 7 at the bottom of the inner cavity of the equipment box 6. The bottom of the adjusting block 9 is engaged and slidably connected with the limiting groove 21. A servo motor 8 is bolted to one end of the bidirectional lead screw 7 on the surface of the equipment box 6, so that the adjusting block 9 can be moved by the servo motor 8, thereby driving the top plate 12 to move up and down through the linkage rod 10.

[0026] Furthermore, the two ends of the linkage 10 are movably connected to the adjusting block 9 and the top block 14 respectively via the rotating shaft 11.

[0027] Furthermore, the top of the equipment box 6 has mounting cavities 20 on both sides, and a telescopic rod 13 is fixed inside the mounting cavity 20. The top of the telescopic rod 13 is fixedly connected to the top plate 12 by screws, which makes the top plate 12 more stable during the up and down movement.

[0028] Furthermore, the secondary clamping plate 3 is connected to the main clamping plate 2 via an electric rotating shaft 15, which facilitates adjusting the angle between the secondary clamping plate 3 and the main clamping plate 2 according to the actual shape of the printed item being clamped, thereby better clamping the metal printed item.

[0029] Furthermore, the clamping block 18 is connected to the corresponding main clamping plate 2 and secondary clamping plate 3 via a universal ball bearing 23. The surface of the clamping block 18 is covered with an anti-slip rubber pad, which facilitates better clamping of metal printed items of different shapes.

[0030] Working principle: Height adjustment: Before use, according to the height of the metal item to be printed, activate the first hydraulic cylinder 5 in the four corner cavities 22 of the clamping table 1. The output end of the first hydraulic cylinder 5 extends or retracts, causing the top plate 12 to rise or fall, making preliminary height adjustment so that the clamp reaches the approximate height suitable for holding the item.

[0031] Subsequently, for more precise height adjustment, the servo motor 8 mounted on the surface of the equipment housing 6 is activated. The servo motor 8 drives the bidirectional lead screw 7 to rotate. Since the threads at both ends of the bidirectional lead screw 7 are in opposite directions, the adjusting block 9, which is threaded to it, will move relative to or away from each other along the limiting slide groove 21 at the bottom of the inner cavity of the equipment housing 6 under the rotation of the bidirectional lead screw 7. The adjusting block 9 is connected to the top block 14 through the linkage rod 10. The two ends of the linkage rod 10 are movably connected to the adjusting block 9 and the top block 14 respectively through the rotating shaft 11. In this way, the horizontal movement of the adjusting block 9 will be converted into the vertical movement of the top block 14 through the linkage rod 10, thereby driving the top plate 12 to perform a secondary precise height adjustment. The telescopic rods 13 in the mounting cavities 20 on both sides of the top of the equipment housing 6 play a stabilizing support role during the vertical movement of the top plate 12, ensuring that the top plate 12 rises and falls smoothly and avoids shaking.

[0032] Angle Adjustment: When it is necessary to clamp irregularly shaped printed metal items, activate the electric rotating shaft 15. The electric rotating shaft 15 drives the upright plate 16 to rotate. Since the auxiliary clamping plate 3 is connected to the main clamping plate 2 through the electric rotating shaft 15, the auxiliary clamping plate 3 can rotate around the axis of the electric rotating shaft 15, thereby flexibly adjusting the angle between the auxiliary clamping plate 3 and the main clamping plate 2 to adapt to the shape of the item and achieve a better clamping effect.

[0033] Item clamping: After adjusting the height and angle, activate the second hydraulic cylinder 17 on the surface of the upright plate 16. The output end of the second hydraulic cylinder 17 extends, pushing the main clamping plate 2 closer to the item to be printed, while the auxiliary clamping plate 3 moves accordingly. Clamping blocks 18, evenly distributed on the surfaces of the main clamping plate 2 and the auxiliary clamping plate 3, are connected to the main and auxiliary clamping plates via universal ball bearings 17, allowing them to rotate flexibly and fit tightly against the item's surface upon contact. Anti-slip rubber pads on the surface of the clamping blocks 18 increase friction with the item, effectively preventing the item from slipping during printing, while also dispersing the clamping force to avoid deformation due to stress concentration, thus achieving stable clamping of metal items of different shapes.

[0034] Printing Coordination: During the metal 3D printing process, the fixture maintains a stable grip on the object at all times. If the position or angle of the object needs to be adjusted during printing, the corresponding motor and hydraulic cylinder can be restarted to fine-tune the height and angle of the fixture, ensuring smooth printing until the 3D printing of the metal object is completed.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture device for metal 3D printing, comprising a clamping table (1), a main clamping plate (2) and a sub-clamping plate (3), characterized in that: The equipment cavity (22) is provided with the bottom plate (4) which is installed on the bottom of the cavity through bolts, the first hydraulic cylinder (5) is installed on the top of the four corners of the bottom plate (4) through bolts, the equipment box (6) is installed on the top output end of the first hydraulic cylinder (5) through screws, the bidirectional screw rod (7) is installed on the bottom middle of the cavity of the equipment box (6) through bearings, the adjusting block (9) is connected on both ends of the bidirectional screw rod (7) through threads, the linkage rod (10) is arranged on the top end of the adjusting block (9), the top block (14) is connected on the top end of the linkage rod (10), the top plate (12) is welded on the top of the top block (14), the electric rotating shaft (15) is installed on the top of the top plate (12) through bolts, the vertical plate (16) is installed on the top of the electric rotating shaft (15) through bolts, the second hydraulic cylinder (17) is installed on the surface of the vertical plate (16) through screws, the main clamping plate (2) is connected on the output end of the second hydraulic cylinder (17) through screws, the four sides of the main clamping plate (2) are provided with the auxiliary clamping plate (3), and the surfaces of the main clamping plate (2) and the auxiliary clamping plate (3) are uniformly provided with a plurality of clamping blocks (18).

2. The fixture device for metal 3D printing of claim 1, wherein: The bottom of the adjusting block (9) is slidably connected with the limiting sliding groove (21) which is arranged on the both sides of the bidirectional screw rod (7) in the cavity of the equipment box (6), and the one end of the bidirectional screw rod (7) is provided with the servo motor (8) on the surface of the equipment box (6) through bolts.

3. The fixture device for metal 3D printing of claim 1, wherein: The both ends of the linkage rod (10) are movably connected with the adjusting block (9) and the top block (14) through the rotating shaft (11) respectively.

4. The fixture device for metal 3D printing of claim 1, wherein: The top of the equipment box (6) is provided with the mounting cavity (20) on both sides, and the telescopic rod (13) is fixedly connected with the top plate (12) through screws in the mounting cavity (20).

5. The fixture device for metal 3D printing of claim 1, wherein: The auxiliary clamping plate (3) is connected with the main clamping plate (2) through the electric rotating shaft (15).

6. The fixture apparatus for metal 3D printing of claim 1, wherein: The clamping block (18) is connected with the corresponding main clamping plate (2) and auxiliary clamping plate (3) through the universal ball bearing (23), and the surface of the clamping block (18) is paved with the antiskid rubber pad.

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