Fixture for 3D printing

Abstract

The utility model discloses a fixture for 3D printing, belongs to the technical field of 3D printing, aims to solve the problem that a special-shaped workpiece is inconvenient to clamp, and comprises a placing disc, a clamping mechanism, a lifting mechanism and a fixing mechanism, the clamping mechanism is arranged below the placing disc, the lifting mechanism is arranged above the clamping mechanism, and the fixing mechanism is arranged above the clamping mechanism. The fixing mechanism is arranged on one side of the lifting mechanism; through the arranged clamping mechanism, the lifting mechanism and the fixing mechanism above can be driven to move oppositely until the fixing heads of a plurality of connecting columns firstly make contact with the outer surface of the special-shaped workpiece, the connecting columns move towards the interior of the fixing barrel to extrude a spring, the non-contact fixing heads are kept in the original state, and the clamping mechanism is used for clamping the special-shaped workpiece. And under the cooperation of the multiple fixing heads, the connecting columns and the springs, the clamping device can make full contact with the outer surfaces of the special-shaped workpieces, the limiting effect is achieved, the special-shaped workpieces of different sizes can be clamped conveniently, the application range of the clamp is widened, and the clamping stability of the clamp is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a clamp for 3D printing. Background Art

[0002] 3D printing (3DP), also known as additive manufacturing technology, is a technology that manufactures physical parts by adding materials layer by layer based on three-dimensional CAD data. The historical development of 3D printing technology is a process of continuous progress and expansion. From early rapid prototyping technology to today's widespread application, 3D printing technology has been applied in design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, automotive design and manufacturing, as well as medical fields such as aerospace and dentistry.

[0003] The prior art discloses a 3D printing fixture with patent announcement number CN219294739U. When using the fixture, the above patent can simultaneously apply horizontal and vertical forces to the metal to clamp it, and the fixing effect is good, which ensures its printing accuracy. However, there are still the following deficiencies in actual use: From a practical point of view, the current 3D printing can be achieved by printing objects of any shape and structure, but the fixture in the above utility model will face unstable clamping when clamping special-shaped workpieces, which may cause the workpiece to move or shift during the processing, thereby affecting the processing accuracy and product quality, and affecting the scope of application and stability of the fixture.

[0004] Therefore, a 3D printing fixture is needed to solve the problem of inconvenience in clamping special-shaped workpieces in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a 3D printing fixture to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3D printing fixture, comprising a placement plate, a clamping mechanism, a lifting mechanism and a fixing mechanism, wherein the clamping mechanism is arranged below the placement plate, the lifting mechanism is arranged above the clamping mechanism, and the fixing mechanism is arranged on one side of the lifting mechanism.

[0007] The clamping mechanism consists of a motor, a gear, a rack, a U-shaped connecting plate, a positioning plate and a mounting plate. The motor is fixedly connected to the lower middle part of the placement plate, the gear is fixedly connected to the outside of the output end of the motor, the rack is symmetrically arranged on the front and rear sides of the gear, and the U-shaped connecting plate is fixedly connected to one end of the two racks that are away from each other.

[0008] It should be noted in the scheme that the left and right sides of the placement plate are symmetrically provided with sliding grooves that are compatible with the vertical plates of the U-shaped connecting plate, and the vertical plates of the U-shaped connecting plate are slidably connected to the inside of the sliding grooves, and the mounting plate is fixedly connected to the top of the U-shaped connecting plate.

[0009] It is further worth mentioning that the positioning plate is symmetrically fixedly connected to the bottom surface of the placement plate, and the U-shaped connecting plate is slidably connected to the outside of the positioning plate.

[0010] It should be further explained that the lifting mechanism is composed of a vertical frame, a cylinder, a lifting plate and a connecting block. The vertical frame is fixedly connected to the top of the mounting plate, the cylinder is fixedly connected to the top surface of the vertical frame, the lifting plate is connected to the output end of the cylinder, and the connecting block is fixedly connected to one side of the connecting block.

[0011] As a preferred embodiment, the fixing mechanism consists of a fixing plate, a threaded rod, a sliding rod, a mounting frame, a fixing tube, a spring, a connecting column and a fixing head. The fixing plate is symmetrically fixedly connected to the top of the connecting block, the threaded rod is threadedly connected to the upper and lower sides of the fixing plate, the sliding rod is slidably connected to the two sides of the fixing plate, the mounting frame is rotatably connected to the bottom surface of the threaded rod, and the mounting frame is fixedly connected to the sliding rod.

[0012] As a preferred implementation, the fixing tube is evenly fixedly installed inside the installation frame, the connecting column slides inside the fixing tube, and the spring is fixedly connected between the inner wall of the fixing tube and the connecting column.

[0013] As a preferred implementation, the fixing head is fixedly connected to an end of the connecting column away from the spring, and the material of the fixing head is set to be rubber material.

[0014] Compared with the prior art, the 3D printing fixture provided by the present invention at least includes the following

[0015] Beneficial effects:

[0016] The height of the fixing mechanism is adjusted by the provided lifting mechanism to a height that is convenient for clamping the special-shaped workpiece, and then the height of the mounting frame is manually adjusted to facilitate clamping of a local position of the special-shaped workpiece. The provided clamping mechanism can then drive the upper lifting mechanism and the fixing mechanism to move toward each other until the fixed heads of the multiple connecting columns first contact the outer surface of the special-shaped workpiece, move toward the inside of the fixing tube through the connecting column, and squeeze the spring. The uncontacted fixed heads remain in their original state. With the cooperation of the multiple fixed heads, connecting columns and springs, they can fully contact the outer surface of the special-shaped workpiece to play a limiting role, which is convenient for clamping special-shaped workpieces of different sizes, thereby improving the scope of application and clamping stability of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the clamping mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the fixing mechanism structure of the utility model.

[0021] In the figure: 1. placing plate; 2. clamping mechanism; 3. lifting mechanism; 4. fixing mechanism; 201. motor; 202. gear; 203. rack; 204. U-shaped connecting plate; 205. positioning plate; 206. slide groove; 207. mounting plate; 301. vertical frame; 302. cylinder; 303. lifting plate; 304. connecting block; 401. fixing plate; 402. threaded rod; 403. slide rod; 404. mounting frame; 405. fixing cylinder; 406. spring; 407. connecting column; 408. fixing head. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] See also Figure 1-4 The utility model provides a 3D printing fixture, including a placement plate 1, a clamping mechanism 2, a lifting mechanism 3 and a fixing mechanism 4, wherein the clamping mechanism 2 is arranged below the placement plate 1, the lifting mechanism 3 is arranged above the clamping mechanism 2, and the fixing mechanism 4 is arranged on one side of the lifting mechanism 3.

[0024] The clamping mechanism 2 is composed of a motor 201, a gear 202, a rack 203, a U-shaped connecting plate 204, a positioning plate 205 and a mounting plate 207. The motor 201 is fixedly connected to the lower middle part of the placement plate 1, the gear 202 is fixedly connected to the outside of the output end of the motor 201, the rack 203 is symmetrically arranged on the front and rear sides of the gear 202, and the U-shaped connecting plate 204 is fixedly connected to one end of the two racks 203 away from each other.

[0025] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the left and right sides of the placement plate 1 are symmetrically provided with sliding grooves 206 that are compatible with the vertical plates of the U-shaped connecting plate 204, and the vertical plates of the U-shaped connecting plate 204 are slidably connected to the inside of the sliding grooves 206, and the mounting plate 207 is fixedly connected to the top of the U-shaped connecting plate 204.

[0026] Further as Figure 1 , Figure 2 and Figure 3As shown, it is worth to explain in detail that the positioning plate 205 is symmetrically fixedly connected to the bottom surface of the placement tray 1, and the U-shaped connecting plate 204 is slidably connected to the outside of the positioning plate 205;

[0027] Since the U-shaped connecting plate 204 slides outside the positioning plate 205 , the stability of the horizontal movement of the U-shaped connecting plate 204 is ensured.

[0028] Further as Figure 1 and Figure 2 As shown, it is worth to explain in detail that the lifting mechanism 3 is composed of a vertical frame 301, a cylinder 302, a lifting plate 303 and a connecting block 304. The vertical frame 301 is fixedly connected to the top of the mounting plate 207, the cylinder 302 is fixedly connected to the top surface of the vertical frame 301, the lifting plate 303 is connected to the output end of the cylinder 302, and the connecting block 304 is fixedly connected to one side of the connecting block 304;

[0029] The fixing mechanism 4 can be adjusted by the lifting mechanism 3 to a height that is convenient for clamping special-shaped workpieces, thereby improving the practicability of the mechanism.

[0030] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth specifically explaining that the fixing mechanism 4 is composed of a fixing plate 401, a threaded rod 402, a sliding rod 403, a mounting frame 404, a fixing tube 405, a spring 406, a connecting column 407 and a fixing head 408. The fixing plate 401 is symmetrically fixedly connected to the top of the connecting block 304, the threaded rod 402 is threadedly connected to the upper and lower sides of the fixing plate 401, the sliding rod 403 is slidably connected to the two sides of the fixing plate 401, the mounting frame 404 is rotatably connected to the bottom surface of the threaded rod 402, and the mounting frame 404 is fixedly connected to the sliding rod 403.

[0031] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth to explain in detail that the fixed cylinder 405 is evenly fixedly installed inside the installation frame 404, the connecting column 407 slides inside the fixed cylinder 405, and the spring 406 is fixedly connected between the inner wall of the fixed cylinder 405 and the connecting column 407;

[0032] The fixed heads 408 of the multiple connecting columns 407 first contact the outer surface of the special-shaped workpiece, and move toward the inside of the fixed tube 405 through the connecting columns 407, thereby squeezing the spring 406. The uncontacted fixed heads 408 remain in their original state. With the cooperation of the multiple fixed heads 408, the connecting columns 407 and the spring 406, they can fully contact the outer surface of the special-shaped workpiece to play a limiting role.

[0033] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth to explain in detail that the fixing head 408 is fixedly connected to the end of the connecting column 407 away from the spring 406, and the material of the fixing head 408 is set to be a rubber material;

[0034] The fixing head 408 made of rubber material can avoid damage to the workpiece during the process of fixing the special-shaped workpiece, and can also increase the friction between the workpiece and the workpiece, thereby improving the stability of the mechanism.

[0035] This solution has the following working process: when in use, first place the special-shaped workpiece on the upper middle part of the placement plate 1, and according to the shape of the special-shaped workpiece, control the cylinder 302 to drive the lifting plate 303 to move, and drive the fixing mechanism 4 to move as a whole through the connecting block 304, and move it to a height that is convenient for clamping the special-shaped workpiece, and then manually rotate the threaded rod 402 to drive the mounting frame 404 to fine-tune the height, so as to facilitate clamping and fixing the local position of the special-shaped workpiece; then control the motor 201 to drive the gear 202 to rotate, and the rack 203 is meshed with the gear 202 to drive the U-shaped connecting plates on both sides. 204 slides inside the slide groove 206. Since the U-shaped connecting plate 204 slides outside the positioning plate 205, the stability of the horizontal movement of the U-shaped connecting plate 204 is guaranteed. The vertical frame 301 is driven to move through the mounting plate 207, and the fixing mechanism 4 is driven to move through the connecting block 304 to approach the outer surface of the special-shaped workpiece. The fixing head 408 first contacts the workpiece, and compresses the spring 406 through the connecting column 407 to facilitate multi-point full contact with the uneven outer surface of the workpiece. Then the motor 201 is turned off to complete the clamping of the special-shaped workpiece, thereby improving the stability of the fixation and the clamping effect.

[0036] In summary: the height of the fixing mechanism 4 is adjusted through the set lifting mechanism 3 to a height that is convenient for clamping the special-shaped workpiece, and then the height of the mounting frame 404 is manually adjusted to facilitate clamping the local position of the special-shaped workpiece, and then the set clamping mechanism 2 can drive the upper lifting mechanism 3 and the fixing mechanism 4 to move toward each other until the fixed heads 408 of the multiple connecting columns 407 first contact the outer surface of the special-shaped workpiece, and move toward the inside of the fixing tube 405 through the connecting column 407, causing compression on the spring 406, and the uncontacted fixed heads 408 remain in their original state, and with the cooperation of the multiple fixed heads 408, the connecting column 407 and the spring 406, they can fully contact the outer surface of the special-shaped workpiece to play a limiting role, which is convenient for clamping special-shaped workpieces of different sizes, thereby improving the scope of application and clamping stability of the clamp.

Claims

1. A 3D printing fixture, comprising a placement plate (1), a clamping mechanism (2), a lifting mechanism (3) and a fixing mechanism (4), characterized in that: The clamping mechanism (2) is arranged below the placement plate (1), the lifting mechanism (3) is arranged above the clamping mechanism (2), and the fixing mechanism (4) is arranged on one side of the lifting mechanism (3); The clamping mechanism (2) is composed of a motor (201), a gear (202), a rack (203), a U-shaped connecting plate (204), a positioning plate (205) and a mounting plate (207); the motor (201) is fixedly connected to the lower middle part of the placement plate (1); the gear (202) is fixedly connected to the outside of the output end of the motor (201); the rack (203) is symmetrically arranged at the front and rear sides of the gear (202); and the U-shaped connecting plate (204) is fixedly connected to the ends of the two racks (203) that are away from each other.

2. A 3D printing fixture according to claim 1, characterized in that: The left and right sides of the placement plate (1) are symmetrically provided with sliding grooves (206) adapted to the vertical plates of the U-shaped connecting plate (204), and the vertical plates of the U-shaped connecting plate (204) are slidably connected to the inside of the sliding grooves (206), and the mounting plate (207) is fixedly connected to the top of the U-shaped connecting plate (204).

3. A 3D printing fixture according to claim 2, characterized in that: The positioning plate (205) is symmetrically fixedly connected to the bottom surface of the placement plate (1), and the U-shaped connecting plate (204) is slidably connected to the outside of the positioning plate (205).

4. A 3D printing fixture according to claim 1, characterized in that: The lifting mechanism (3) is composed of a vertical frame (301), a cylinder (302), a lifting plate (303) and a connecting block (304); the vertical frame (301) is fixedly connected to the top of the mounting plate (207); the cylinder (302) is fixedly connected to the top surface of the vertical frame (301); the lifting plate (303) is connected to the output end of the cylinder (302); and the connecting block (304) is fixedly connected to one side of the connecting block (304).

5. The 3D printing fixture according to claim 1, characterized in that: The fixing mechanism (4) is composed of a fixing plate (401), a threaded rod (402), a sliding rod (403), a mounting frame (404), a fixing tube (405), a spring (406), a connecting column (407) and a fixing head (408); the fixing plate (401) is symmetrically fixedly connected to the top of the connecting block (304); the threaded rod (402) is threadedly connected to the upper and lower sides of the fixing plate (401); the sliding rod (403) is slidably connected to the two sides of the fixing plate (401); the mounting frame (404) is rotatably connected to the bottom surface of the threaded rod (402); and the mounting frame (404) is fixedly connected to the sliding rod (403).

6. A 3D printing fixture according to claim 5, characterized in that: The fixed cylinder (405) is evenly fixedly installed inside the installation frame (404), the connecting column (407) slides inside the fixed cylinder (405), and the spring (406) is fixedly connected between the inner wall of the fixed cylinder (405) and the connecting column (407).

7. A 3D printing fixture according to claim 5, characterized in that: The fixing head (408) is fixedly connected to an end of the connecting column (407) away from the spring (406), and the material of the fixing head (408) is set to be a rubber material.

Images