Forming cylinder lifting device for 3D printing

Abstract

The utility model discloses a 3D (three-dimensional) printing forming cylinder lifting device which comprises a forming cylinder and a driving component fixed on the forming cylinder, the transmission assembly is in transmission connection with the driving assembly; the supporting seat is connected with the transmission assembly, and the driving assembly is configured to drive the transmission assembly to drive the forming cylinder to move in the vertical direction; the guide mechanism comprises guide rails and a sliding block, the guide rails are arranged on the two sides of the forming cylinder respectively, the sliding block is connected with the guide rails in a sliding mode, the supporting base is fixedly connected with the sliding block, and the guide mechanism is configured to guide movement of the forming cylinder in the vertical direction and prevent deviation in the moving process. The forming cylinder is driven by the driving assembly and the transmission assembly to move in the vertical direction along the guide rail, and the forming cylinder is prevented from deviating in the lifting process.

Description

Technical Field

[0001] This utility model belongs to the technical field of SLM metal 3D printing equipment, and particularly relates to a 3D printing forming cylinder lifting device. Background Technology

[0002] SLM metal 3D printing equipment requires sintering metal powder layer by layer during the printing process. Therefore, the forming cylinder needs to have a high-precision lifting function. At the same time, this structure also needs to have sufficient lateral rigidity to prevent displacement during the lifting process. Utility Model Content

[0003] To address the above technical problems, this utility model provides a 3D printing molding cylinder lifting device. The device has a compact structure, is easy to install, has high structural rigidity and stability, high control precision, and highly flexible lifting.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A 3D-printed molding cylinder lifting device includes:

[0006] Molding cylinder,

[0007] The drive assembly is fixed to the forming cylinder;

[0008] A transmission component, which is connected in drive to the drive component;

[0009] A support base is connected to the transmission assembly, and the drive assembly is configured to drive the transmission assembly to move the forming cylinder in the vertical direction;

[0010] The guiding mechanism includes a guide rail and a slider. The guide rail is respectively disposed on both sides of the forming cylinder. The slider is slidably connected to the guide rail. The support base is fixedly connected to the slider. The guiding mechanism is configured to guide the vertical movement of the forming cylinder and prevent deviation during the movement.

[0011] Preferably, the transmission assembly includes a lead screw and a lead screw nut, the output end of the drive assembly is connected to the lead screw, both ends of the lead screw are rotatably connected to the forming cylinder, the lead screw nut is threadedly connected to the lead screw, and the support base is fixedly connected to the lead screw nut.

[0012] Preferably, the drive assembly includes a drive motor, a reducer, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The output shaft of the drive motor is connected to the input end of the reducer. The first synchronous pulley is sleeved on the output shaft of the reducer, the second synchronous pulley is sleeved on the end of the lead screw, the synchronous belt connects the first synchronous pulley and the second synchronous pulley, and the drive motor and the reducer are fixed on the forming cylinder.

[0013] Preferably, the guiding mechanism further includes a grating ruler disposed on both sides of the forming cylinder, the grating ruler being configured to detect the displacement of the forming cylinder.

[0014] Preferably, detection plates are installed at the bottom and top of the forming cylinder, and proximity switches are installed on the support base. When the detection plates move within the detection range of the proximity switches, the proximity switches generate a signal and send the signal to the control terminal. The control terminal controls the drive motor of the drive assembly to stop working according to the signal, thereby limiting the movement of the forming cylinder and protecting the lifting stroke of the forming cylinder.

[0015] Preferably, the system also includes a cable chain configured to protect and guide cables. One end of the cable chain is fixed to a cable chain mounting base, and the other end is fixed to a cable chain guide frame. The cable chain mounting base is mounted on the support base, and the cable chain guide frame is disposed inside the forming cylinder and fixed to the forming cylinder.

[0016] Preferably, the forming cylinder includes a top plate, a bottom plate, a first side plate, and a second side plate, which are assembled to form the forming cylinder, with the first side plate and the second side plate arranged in parallel.

[0017] Preferably, the transmission assembly further includes a first bearing, a second bearing, a bearing housing, a first fixing nut, a retaining ring, and a second fixing nut. The first fixing nut, the retaining ring, and the first bearing are sequentially sleeved on the upper end of the lead screw from top to bottom to connect the upper end of the lead screw to the top plate. The first bearing is installed in the bearing housing, and the first bearing housing is fixedly connected to the top plate.

[0018] The second bearing and the second fixing nut are sequentially sleeved on the lower end of the lead screw from top to bottom, so as to connect the lower end of the lead screw to the base plate.

[0019] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art:

[0020] In this invention, a drive assembly drives a transmission assembly, which in turn drives the forming cylinder to move in the vertical direction. A guide rail and a slider that are slidably connected to the guide rail are provided on the forming cylinder. The slider is fixed to the support base. When the forming cylinder moves in the vertical direction, the guide rail moves with the forming cylinder. Since the slider is slidably connected to the guide rail, the guide rail can prevent the forming cylinder from deviating when it moves in the vertical direction. Attached Figure Description

[0021] Figure 1 This is a front view of the 3D printing molding cylinder lifting device of this utility model;

[0022] Figure 2 This is a cross-sectional view of the 3D printing molding cylinder lifting device of this utility model;

[0023] Figure 3 This is a top view of the 3D printing molding cylinder lifting device of this utility model;

[0024] Figure 4 for Figure 2 An enlarged view of part A;

[0025] Figure 5 This is a schematic diagram of the molding cylinder in the 3D printing molding cylinder lifting device of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Molding cylinder; 11. Top plate; 12. First side plate; 13. Second side plate; 14. Bottom plate; 2. Guide mechanism; 21. Slider; 22. Guide rail; 23. Grating ruler;

[0027] 3. Cable chain; 4. Cable chain guide frame; 5. Support base; 6. Drive assembly; 61. Drive motor; 62. Reducer; 63. First synchronous pulley; 64. Synchronous belt; 65. Second synchronous pulley;

[0028] 7. Transmission assembly; 71. First fixing nut; 72. Retaining ring; 73. First bearing; 74. Bearing housing; 75. Lead screw; 76. Lead screw nut; 77. Second fixing nut; 78. Second bearing;

[0029] 8. Cable chain mounting bracket; 9. Proximity switch; 10. Detection board. Detailed Implementation

[0030] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the 3D printing molding cylinder lifting device proposed in this utility model. The advantages and features of this utility model will become clearer from the following description.

[0031] See Figure 1 A 3D printing molding cylinder lifting device includes: molding cylinder 1, drive assembly 6, transmission assembly 7, guide mechanism 2 and support base 5.

[0032] The forming cylinder 1 includes a top plate 11, a bottom plate 14, a first side plate 12, and a second side plate 13. The top plate 11, the bottom plate 14, the first side plate 12, and the second side plate 13 are assembled to form the forming cylinder 1. The first side plate 12 and the second side plate 13 are arranged in parallel. The forming cylinder 1 has a cavity.

[0033] The drive assembly 6 is fixed on the forming cylinder 1, and the transmission assembly 7 is connected to the drive assembly 6 in a transmission manner; the support base 5 is connected to the transmission assembly 7, and the drive assembly 6 is configured to drive the transmission assembly 7 to move the forming cylinder 1 in the vertical direction.

[0034] The guiding mechanism 2 includes a guide rail 22 and a slider 21. The guide rail 22 is respectively disposed on the first side plate 12 and the second side plate 13 of the forming cylinder 1. The slider 21 is slidably connected to the guide rail 22, and the support base 5 is fixedly connected to the slider 21. When the forming cylinder 1 moves vertically, the guide rail 22 moves with the forming cylinder 1. Since the slider 21 is slidably connected to the guide rail, the guide rail 22 can prevent the forming cylinder 1 from deviating when moving vertically. The guide rail 22 has high rigidity and straightness accuracy.

[0035] The support base 5 is a fixed component, made of welded steel plate, and has high strength and rigidity.

[0036] More preferably, the guide mechanism 2 further includes a grating ruler 23, which is respectively disposed on the first side plate 12 and the second side plate 13 of the forming cylinder 1. The grating ruler 23 is configured to detect the displacement of the forming cylinder 1 and improve the accuracy of the lifting and lowering movement of the forming cylinder 1.

[0037] In this embodiment, the transmission assembly 7 includes a lead screw 75 and a lead screw nut 76. The upper end of the lead screw 75 is rotatably connected to the top plate 11 of the forming cylinder 1, and the lower end of the lead screw 75 is rotatably connected to the bottom plate 14 of the forming cylinder 1. The lead screw nut 76 is threadedly connected to the lead screw 75, the support seat 5 is fixedly connected to the lead screw nut 76, and the output end of the drive assembly 6 is connected to the upper end of the lead screw 75.

[0038] The drive assembly 6 drives the lead screw 75 to rotate. Since the lead screw nut 76 is threadedly connected to the lead screw 75 and the lead screw nut 76 is connected to the support seat 5, the support seat 5 remains stationary, and the lead screw 75 is driven to move up and down in the opposite direction, thereby driving the forming cylinder 1 to move up and down.

[0039] Since the lead screw 75 needs to rotate and drive the forming cylinder 1 to move up and down, in order to improve the installation accuracy of the lead screw 75, the transmission assembly 7 also includes a first bearing 73, a second bearing 78, a bearing seat 74, a first fixing nut 71, a retaining ring 72, and a second fixing nut 77. The first fixing nut 71, the retaining ring 72, and the first bearing 73 are sequentially sleeved on the upper end of the lead screw 75 from top to bottom, so as to connect the upper end of the lead screw 75 with the top plate 11. The first bearing 73 is installed in the bearing seat 74, and the first bearing 73 seat is fixedly connected to the top plate 11.

[0040] The second bearing 78 and the second fixing nut 77 are sequentially sleeved on the lower end of the lead screw 75 from top to bottom, so as to connect the lower end of the lead screw 75 with the base plate 14.

[0041] The upper end of the lead screw 75 is supported by a first bearing 73 installed in a bearing housing 74. The first bearing 73 is fixed by a retaining ring 72 and a first fixing nut 71. The bearing housing 74 is fixed to the top plate 11 of the forming cylinder 1. The lower end of the lead screw 75 is fixed to the bottom plate 14 of the forming cylinder 1 by a second bearing 78. The second bearing 78 is locked to the bottom plate 14 of the forming cylinder 1 by a second fixing nut 77. Through the support of the first bearing 73 and the bearing housing 74 at both ends of the lead screw 75, and the preload of the first fixing nut 71 and the second fixing nut 77, the gaps in the installation process of the lead screw 75 can be effectively eliminated, and the motion accuracy of the lead screw 75 transmission can be improved. When the drive assembly 6 transmits rotation to the lead screw 75, because the lead screw nut 76 is fixed to the support seat 5 as a fixed end, the lead screw 75 converts the rotational motion into linear motion and performs vertical linear motion under the guidance of the guide mechanism 2.

[0042] Preferably, the drive assembly 6 includes a drive motor 61, a reducer 62, a first synchronous pulley 63, a second synchronous pulley 65, and a synchronous belt 64. The output shaft of the drive motor 61 is connected to the input end of the reducer 62. The first synchronous pulley 63 is sleeved on the output shaft of the reducer 62. The second synchronous pulley 65 is sleeved on the end of the lead screw 75. The synchronous belt 64 connects the first synchronous pulley 63 and the second synchronous pulley 65. The drive motor 61 and the reducer 62 are fixed on the forming cylinder 1.

[0043] The upper end of the lead screw 75 extends through the top plate 11 of the forming cylinder 1. The second synchronous pulley 65 is sleeved on the lead screw 75. The rotational motion of the drive motor 61 is reduced by the reducer 62 and transmitted to the first synchronous pulley 63. Since the first synchronous pulley 63 and the second synchronous pulley 65 are connected by the synchronous belt 64, the rotational motion is transmitted to the second synchronous pulley 65, thereby driving the lead screw 75 to rotate. The drive motor 61 is the power output device of this device, which transmits the rotational motion from the drive motor 61, the reducer 62, the first synchronous pulley 63, the synchronous belt 64, and the second synchronous pulley 65 to the lead screw 75.

[0044] Preferably, in order to install the detection plate 10 at the bottom and top of the molding cylinder 1, a proximity switch 9 is installed on the support base 5. When the detection plate 10 moves within the detection range of the proximity switch 9, the proximity switch 9 immediately generates a signal and sends the signal to the control terminal. The control terminal controls the drive motor 61 of the drive assembly 6 to stop working according to the signal, thereby limiting the movement of the molding cylinder 1 and protecting the lifting stroke of the molding cylinder 1.

[0045] Preferably, it also includes a cable chain 3, one end of which is fixedly connected to a cable chain fixing seat 8, and the other end is fixedly connected to a cable chain guide frame 4. The cable chain fixing seat 8 is installed on a support seat 5, and the cable chain guide frame 4 is located inside the forming cylinder 1 and is fixedly connected to the bottom plate 14 and the top plate 11 of the forming cylinder 1. The inside of the cable chain 3 can guide and protect the control cable and the motion cable, effectively improving the life of the motion cable.

[0046] This utility model's forming cylinder has an assembly structure, nested inside the support base, which facilitates easy disassembly and installation. A lifting motion pair is formed through a guide mechanism, a lead screw, and a lead screw nut. Two sets of guide rails 22 are respectively set on the first and second side plates of the forming cylinder. The guide mechanism, consisting of four sets of guide rails 22 and four sets of sliders, has high rigidity. Simultaneously, the detection by a grating ruler can effectively improve the linear motion accuracy of the lead screw.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A 3D printed forming cylinder lift comprising, The utility model relates to a forming cylinder, a driving assembly fixed on the forming cylinder, a transmission assembly in transmission connection with the driving assembly, a support seat connected with the transmission assembly, the driving assembly being configured to drive the transmission assembly to move the forming cylinder in the vertical direction, a guide mechanism including guide rails and sliding blocks, the guide rails being arranged on both sides of the forming cylinder respectively, the sliding blocks being in sliding connection with the guide rails, and the support seat being fixedly connected with the sliding blocks. The transmission assembly includes a lead screw and a lead screw nut, the output end of the driving assembly being connected with the lead screw, both ends of the lead screw being rotatably connected with the forming cylinder respectively, the lead screw nut being in threaded connection with the lead screw, and the support seat being fixedly connected with the lead screw nut. The driving assembly includes a driving motor, a speed reducer, a first synchronous wheel, a second synchronous wheel, and a synchronous belt, the output shaft of the driving motor being connected with the input end of the speed reducer, the first synchronous wheel being sleeved on the output shaft of the speed reducer, the second synchronous wheel being sleeved on the end of the lead screw, the synchronous belt being connected with the first synchronous wheel and the second synchronous wheel, and the driving motor and the speed reducer being fixed on the forming cylinder. The guide mechanism further includes grating rulers arranged on both sides of the forming cylinder, the grating rulers being configured to detect the displacement of the forming cylinder. Detection plates are mounted on the bottom and top of the forming cylinder, and a proximity switch is mounted on the support seat. A drag chain is further included, one end of the drag chain being fixedly connected with a drag chain fixing seat, the other end of the drag chain being fixedly connected with a drag chain guide frame, the drag chain fixing seat being mounted on the support seat, the drag chain guide frame being arranged inside the forming cylinder and fixed with the forming cylinder.

2. The 3D printed forming cylinder lift of claim 1, wherein, The forming cylinder includes a top plate, a bottom plate, a first side plate, and a second side plate, the top plate, the bottom plate, the first side plate, and the second side plate being assembled into the forming cylinder, and the first side plate and the second side plate being arranged in parallel.

3. The 3D printed forming cylinder lift of claim 2, wherein, The transmission assembly further includes a first bearing, a second bearing, a bearing seat, a first fixing nut, a retainer, and a second fixing nut, the first fixing nut, the retainer, and the first bearing being sequentially sleeved on the upper end of the lead screw from top to bottom, the upper end of the lead screw being rotatably connected with the top plate, the first bearing being mounted in the bearing seat, and the bearing seat being fixedly connected with the top plate.

4. The 3D printed forming cylinder lift of claim 1, wherein, The second bearing and the second fixing nut are sequentially sleeved on the lower end of the lead screw from top to bottom, the lower end of the lead screw being rotatably connected with the bottom plate.

5. The 3D printed forming cylinder lift of claim 1, wherein, ​ 6. The 3D printed forming cylinder lift of claim 1, wherein, ​ 7. The 3D printed forming cylinder lift of claim 2, wherein, ​ 8. The 3D printed forming cylinder lift of claim 7, wherein, ​ ​

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