Negative pressure type 3D printing clamp
By designing a negative pressure 3D printing fixture, using a combined structure of base, vertical block, lifting component and clamping component, the problem that existing fixtures cannot stably clamp special-shaped parts and large workpieces, and the stability of workpieces is achieved Clamping and height adjustment improve printing accuracy and work efficiency.
Patent Information
- Application Number
- CN202421134713.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The clamping plates of existing 3D printing fixtures are mostly flat panels, which cannot stably clamp the special-shaped parts, which are prone to sliding or misalignment, and cannot effectively clamp large workpieces, resulting in a decrease in printing accuracy.
A negative pressure 3D printing fixture was designed, adopting a combined structure of base, vertical block, lifting assembly and clamping assembly. The clamping assembly includes a long plate, a V-shaped clamping plate and a pre-clamping structure, and is driven by a motor on both sides. The threaded screw and spring cooperate to achieve stable clamping and height adjustment of the workpiece.
The stable clamping of special-shaped parts and larger workpieces is achieved, avoiding sliding or misalignment, improving printing accuracy and success rate, and improving working efficiency through height adjustment of the lifting and lowering components.
Smart Images
Figure CN222522046U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, in particular to a negative pressure 3D printing fixture. Background Art
[0002] Negative pressure 3D printing refers to controlling the pressure around the printing nozzle to reduce during the 3D printing process, allowing the molten material to adhere better to the printing platform, thereby improving the accuracy and stability of 3D printing. Negative pressure 3D printing controls the air flow around the nozzle to gradually reduce the air pressure, making the printing process more stable and improving the success rate and quality of 3D printing.
[0003] The clamping plates of existing fixtures are mostly flat plates, which cannot stably clamp special-shaped parts and are prone to sliding or misalignment, resulting in the fixture not clamping tightly and affecting printing. At the same time, the fixture only clamps the two sides of the workpiece and cannot stably clamp larger workpieces. The workpiece is very likely to shake, affecting printing accuracy. Utility Model Content
[0004] In view of the fact that the clamping plates of the above-mentioned existing clamps are mostly flat plates, they cannot stably clamp special-shaped parts and are prone to sliding or misalignment, resulting in the clamp not clamping tightly and affecting printing. At the same time, the clamp only clamps the two sides of the workpiece and cannot stably clamp larger workpieces. The workpiece is very likely to shake, affecting the printing accuracy. The present utility model is proposed.
[0005] Therefore, the purpose of the utility model is to provide a negative pressure 3D printing fixture, which aims to solve the problem that the clamping plates of the fixture are mostly flat plates, which cannot stably clamp special-shaped parts and are prone to sliding or dislocation, resulting in the fixture not clamping tightly and affecting printing. At the same time, the fixture only clamps the two sides of the workpiece and cannot stably clamp larger workpieces. The workpiece is very likely to shake, affecting the printing accuracy.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a negative pressure 3D printing fixture, comprising a base, a vertical block is symmetrically arranged on the top of the base, a lifting component is arranged inside the base, and a clamping component is arranged on one side of the lifting component;
[0007] The clamping assembly includes a long plate, a second slide groove is provided on the long plate, a placement plate is provided on one side of the long plate, a fixed plate is symmetrically provided on the other side of the long plate, a second motor is provided on one side of the fixed plate, the output end of the second motor is transmission-connected to a bidirectional threaded screw, a V-shaped clamping plate is symmetrically provided on the bidirectional threaded screw, and a pre-clamping structure is provided on the top of the long plate.
[0008] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, the pre-clamping structure includes an L-shaped plate, the L-shaped plate is arranged on the top of the long plate, a sliding rod is provided on the L-shaped plate, and the sliding rod passes through the L-shaped plate, a spring is sleeved on the outer surface of the sliding rod, a pressure plate is provided at the bottom end of the sliding rod, the spring is arranged between the L-shaped plate and the pressure plate, and a pull plate is provided at the top end of the sliding rod.
[0009] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, guide rods are symmetrically arranged on the top of the pressure plate, the guide rods pass through the L-shaped plate, and a circular limiting plate is arranged on the top of the guide rods.
[0010] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, wherein: the V-shaped clamping plate passes through the second slide groove and extends to the other side of the long plate, the V-shaped clamping plate is slidably connected to the second slide groove, and the sliding rod is slidably connected to the L-shaped plate.
[0011] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, the lifting assembly includes a first motor, the output end of the first motor is connected to the first rotating shaft, the first rotating shaft is provided with a first bevel gear, the first rotating shaft is provided with a second bevel gear, the second bevel gear is correspondingly meshed with a third bevel gear, a threaded rod is provided on one side of the third bevel gear, and a lifting platform is provided on the threaded rod.
[0012] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, wherein: protrusions are respectively provided on both sides of the lifting platform, a groove is provided inside the vertical block, and the threaded rod is arranged inside the groove.
[0013] As a preferred solution of the negative pressure 3D printing fixture described in the utility model, wherein: a first slide groove is provided on the inner wall of the groove, the protrusion is slidably connected to the first slide groove, a square groove is provided inside the base, and the first rotating shaft is arranged inside the square groove.
[0014] Beneficial effects of the utility model:
[0015] 1. The utility model pulls the pull plate, which drives the pressure plate to move upward through the slide rod, thereby squeezing the spring to generate tension. The tension of the spring pushes the pressure plate to pre-clamp the workpiece, which is convenient for the staff to adjust the position of the workpiece. Then the second motor drives the bidirectional threaded screw to rotate, and the bidirectional threaded screw drives the symmetrical V-shaped clamping plates to clamp the workpiece thoroughly, so that the workpiece will not slip or misalign, and the clamp will not be able to clamp tightly and affect printing. At the same time, the clamp has clamping operations on both sides and the upper and lower sides of the workpiece, which avoids shaking when clamping larger workpieces and does not affect printing accuracy.
[0016] 2. In the utility model, the first motor drives the first bevel gear and the second bevel gear on the first rotating shaft to rotate, the first bevel gear and the second bevel gear respectively drive the third bevel gear to rotate, the third bevel gear drives the threaded rod to rotate, the threaded rod drives the lifting platform to move along the first sliding groove through the protrusion, and the lifting platform drives the clamping assembly to move, thereby realizing the height adjustment of the clamping platform, facilitating the subsequent 3D printing of the workpiece and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a negative pressure 3D printing fixture.
[0019] Figure 2 This is a schematic diagram of the structure of a clamping component of a negative pressure 3D printing fixture of the utility model.
[0020] Figure 3 This is a schematic diagram of the pre-clamping structure of a negative pressure 3D printing fixture of the utility model.
[0021] Figure 4 This is a schematic cross-sectional structural diagram of a negative pressure 3D printing fixture of the present invention.
[0022] Figure 5 This is another cross-sectional structural schematic diagram of a negative pressure 3D printing fixture of the present invention.
[0023] Description of reference numerals:
[0024] 1. Base; 2. Vertical block; 3. Lifting assembly; 31. First motor; 32. First rotating shaft; 33. First bevel gear; 34. Second bevel gear; 35. Third bevel gear; 36. Threaded rod; 37. Lifting platform; 38. Bump; 39. Groove; 310. First slide slot; 311. Square slot; 4. Clamping assembly; 41. Long board; 42. Second slide slot; 43. Placement board; 44. Fixed board; 45. Second motor; 46. Bidirectional threaded screw; 47. V-shaped clamping plate; 48. Pre-clamping structure; 481. L-shaped board; 482. Slide rod; 483. Spring; 484. Pressing plate; 485. Guide rod; 486. Circular limit plate; 487. Pulling plate. DETAILED DESCRIPTION
[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0026] Example 1
[0027] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a negative pressure 3D printing fixture, which includes a base 1, a vertical block 2 is symmetrically arranged on the top of the base 1, a lifting component 3 is arranged inside the base 1, and a clamping component 4 is arranged on one side of the lifting component 3;
[0028] The clamping assembly 4 includes a long plate 41, a second slide groove 42 is provided on the long plate 41, a placement plate 43 is provided on one side of the long plate 41, a fixed plate 44 is symmetrically provided on the other side of the long plate 41, a second motor 45 is provided on one side of the fixed plate 44, the output end of the second motor 45 is transmission-connected to a bidirectional threaded screw 46, a V-shaped clamping plate 47 is symmetrically provided on the bidirectional threaded screw 46, a pre-clamping structure 48 is provided on the top of the long plate 41, the bidirectional threaded screw 46 is driven to rotate by the second motor 45, and the bidirectional threaded screw 46 drives the symmetrical V-shaped clamping plate 37 to thoroughly clamp the workpiece, so that the workpiece will not slip or misalign.
[0029] The pre-clamping structure 48 includes an L-shaped plate 481, which is arranged on the top of the long plate 41. A slide bar 482 is provided on the L-shaped plate 481, and the slide bar 482 passes through the L-shaped plate 481. A spring 483 is sleeved on the outer surface of the slide bar 482. A pressure plate 484 is provided at the bottom end of the slide bar 482. The spring 483 is arranged between the L-shaped plate 481 and the pressure plate 484. A pulling plate 487 is provided on the top of the slide bar 482. By pulling the pulling plate 487, the pulling plate 487 drives the pressure plate 484 to move upward through the slide bar 482, thereby squeezing the spring 483 to generate tension. The tension of the spring 483 pushes the pressure plate 484 to pre-clamp the workpiece, which is convenient for the staff to adjust the position of the workpiece.
[0030] A guide rod 485 is symmetrically arranged on the top of the pressure plate 484 . The guide rod 485 passes through the L-shaped plate 481 . A circular limit plate 486 is arranged on the top of the guide rod 485 . The guide rod 485 guides the pressure plate 484 .
[0031] The V-shaped clamping plate 47 passes through the second slide groove 42 and extends to the other side of the long plate 41. The V-shaped clamping plate 47 is slidably connected to the second slide groove 42. The slide rod 482 is slidably connected to the L-shaped plate 481. The workpiece is clamped by the V-shaped clamping plate 47, and the clamping stability is strong and the adaptability is wider.
[0032] During use, the staff first pulls the pull plate 487, and the pull plate 487 drives the pressure plate 484 to move upward through the slide rod 482, thereby squeezing the spring 483 to generate tension in the spring 483, and then places the workpiece on the placement plate 43, and then releases the pull plate 487. Due to the tension of the spring 483, the pressure plate 484 is pushed downward along the guide rod 485, thereby pre-clamping the workpiece, which is convenient for the staff to adjust the position of the workpiece, and then starts the second motor 45, and the second motor 45 drives the bidirectional threaded screw 46 to rotate, and the bidirectional threaded screw 46 drives the symmetrical V-shaped clamping plate 47 to clamp the workpiece thoroughly, so that the workpiece will not slip or misalign, and the clamp will not be clamped tightly to affect printing. At the same time, the clamp has clamping operations on both sides and the upper and lower sides of the workpiece, which avoids shaking when clamping larger workpieces and does not affect printing accuracy.
[0033] Example 2
[0034] Reference Figure 1-5 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the lifting component 3 includes a first motor 31, the output end of the first motor 31 is transmission-connected to the first rotating shaft 32, the first rotating shaft 32 is provided with a first bevel gear 33, the first rotating shaft 32 is provided with a second bevel gear 34, the second bevel gear 34 is correspondingly meshed with a third bevel gear 35, a threaded rod 36 is provided on one side of the third bevel gear 35, and a lifting platform 37 is provided on the threaded rod 36. The lifting platform 37 is driven by the first motor 31 to move along the first slide groove 310 through the protrusion 38, so as to realize the height adjustment of the clamping table.
[0035] There are protrusions 38 on both sides of the lifting platform 37, and a groove 39 is provided inside the vertical block 2. The threaded rod 36 is arranged inside the groove 39. The vertical block 2 supports the threaded rod 36 and assists in its rotation.
[0036] A first slide groove 310 is provided on the inner wall of the groove 39, and the protrusion 38 is slidably connected to the first slide groove 310. A square groove 311 is provided inside the base 1, and the first rotating shaft 32 is arranged inside the square groove 311. The protrusion 38 slides in the first slide groove 310 to guide the lifting platform 37.
[0037] During use, the staff starts the first motor 31, the first motor 31 drives the first bevel gear 33 and the second bevel gear 34 on the first rotating shaft 32 to rotate, the first bevel gear 33 and the second bevel gear 34 respectively drive the third bevel gear 35 to rotate, the third bevel gear 35 drives the threaded rod 36 to rotate, the threaded rod 36 drives the lifting platform 37 to move along the first slide groove 310 through the protrusion 38, and the lifting platform 37 drives the clamping assembly 4 to move, thereby realizing the height adjustment of the clamping platform, which is convenient for subsequent 3D printing of the workpiece and improves work efficiency.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A negative pressure 3D printing fixture, comprising a base (1), wherein a vertical block (2) is symmetrically arranged on the top of the base (1), characterized in that: A lifting component (3) is provided inside the base (1), and a clamping component (4) is provided on one side of the lifting component (3); The clamping assembly (4) comprises a long plate (41), a second slide groove (42) is provided on the long plate (41), a placement plate (43) is provided on one side of the long plate (41), a fixing plate (44) is symmetrically provided on the other side of the long plate (41), a second motor (45) is provided on one side of the fixing plate (44), an output end of the second motor (45) is transmission-connected to a bidirectional threaded screw (46), a V-shaped clamping plate (47) is symmetrically provided on the bidirectional threaded screw (46), and a pre-clamping structure (48) is provided on the top of the long plate (41).
2. A negative pressure 3D printing fixture according to claim 1, characterized in that: The pre-clamping structure (48) includes an L-shaped plate (481), wherein the L-shaped plate (481) is arranged on the top of the long plate (41), a sliding rod (482) is provided on the L-shaped plate (481), and the sliding rod (482) passes through the L-shaped plate (481), a spring (483) is sleeved on the outer surface of the sliding rod (482), a pressing plate (484) is provided at the bottom end of the sliding rod (482), the spring (483) is arranged between the L-shaped plate (481) and the pressing plate (484), and a pulling plate (487) is provided at the top end of the sliding rod (482).
3. A negative pressure 3D printing fixture according to claim 2, characterized in that: A guide rod (485) is symmetrically arranged on the top of the pressure plate (484), the guide rod (485) passes through the L-shaped plate (481), and a circular limiting plate (486) is arranged on the top of the guide rod (485).
4. A negative pressure 3D printing fixture according to claim 3, characterized in that: The V-shaped clamping plate (47) passes through the second sliding groove (42) and extends to the other side of the long plate (41); the V-shaped clamping plate (47) is slidably connected to the second sliding groove (42); and the sliding rod (482) is slidably connected to the L-shaped plate (481).
5. A negative pressure 3D printing fixture according to claim 4, characterized in that: The lifting assembly (3) comprises a first motor (31), the output end of the first motor (31) is transmission-connected to a first rotating shaft (32), a first bevel gear (33) is provided on the first rotating shaft (32), a second bevel gear (34) is provided on the first rotating shaft (32), a third bevel gear (35) is correspondingly meshed with the second bevel gear (34), a threaded rod (36) is provided on one side of the third bevel gear (35), and a lifting platform (37) is provided on the threaded rod (36).
6. A negative pressure 3D printing fixture according to claim 5, characterized in that: The lifting platform (37) is provided with protrusions (38) on both sides respectively, the vertical block (2) is provided with a groove (39) inside, and the threaded rod (36) is arranged inside the groove (39).
7. A negative pressure 3D printing fixture according to claim 6, characterized in that: A first sliding groove (310) is provided on the inner wall of the groove (39), the protrusion (38) is slidably connected to the first sliding groove (310), a square groove (311) is provided inside the base (1), and the first rotating shaft (32) is arranged inside the square groove (311).