CN111016173A - A linear drive module and 3D printer - Google Patents
A linear drive module and 3D printer Download PDFInfo
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- CN111016173A CN111016173A CN201911400686.2A CN201911400686A CN111016173A CN 111016173 A CN111016173 A CN 111016173A CN 201911400686 A CN201911400686 A CN 201911400686A CN 111016173 A CN111016173 A CN 111016173A
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- 238000007639 printing Methods 0.000 claims description 28
- 230000001050 lubricating effect Effects 0.000 claims description 26
- 230000001105 regulatory effect Effects 0.000 claims 8
- 125000003003 spiro group Chemical group 0.000 claims 1
- 230000036316 preload Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Optics & Photonics (AREA)
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Abstract
本发明实施例提供一种直线驱动模组及3D打印机，直线模组包括滑动轴、丝杆、驱动装置、固定装置、滑动装置和调节装置。丝杆可绕自身轴线转动。驱动装置与丝杆连接，驱动装置用于驱动丝杆转动。固定装置套接于丝杆，丝杆可驱动固定装置沿丝杆的长度方向往复运动，固定装置用于固定打印头。滑动装置与固定装置连接，并且滑动装置抵接于滑动轴，滑动装置可沿滑动轴滑动。调节装置与滑动装置和固定装置连接，调节装置用于调节滑动装置与滑动轴之间的距离。通过以上设置，可改变滑动装置与滑动轴之间的预压，实现对固定装置与滑动轴之间的松紧度的调节。
Embodiments of the present invention provide a linear drive module and a 3D printer. The linear module includes a sliding shaft, a lead screw, a driving device, a fixing device, a sliding device and an adjusting device. The screw can rotate around its own axis. The driving device is connected with the screw rod, and the driving device is used to drive the screw rod to rotate. The fixing device is sleeved on the screw rod, the screw rod can drive the fixing device to reciprocate along the length direction of the screw rod, and the fixing device is used for fixing the print head. The sliding device is connected with the fixing device, the sliding device abuts on the sliding shaft, and the sliding device can slide along the sliding shaft. The adjusting device is connected with the sliding device and the fixing device, and the adjusting device is used for adjusting the distance between the sliding device and the sliding shaft. Through the above arrangement, the preload between the sliding device and the sliding shaft can be changed, and the tightness between the fixing device and the sliding shaft can be adjusted.
Description
Technical Field
The embodiment of the invention relates to the field of 3D printers, in particular to a linear driving module and a 3D printer.
Background
3D printing is one of the rapid prototyping technologies, which is a technology for constructing an object by using a bondable material such as powdered metal or plastic and the like in a layer-by-layer printing mode on the basis of a digital model file.
The existing 3D printer part utilizes a linear driving module to realize the three-axis motion of X, Y, Z, wherein the linear driving module has high guiding precision and can bear larger load, and the application in the industrial field is quite wide. The linear driving module comprises a fixing device, a screw rod and a sliding shaft, wherein the fixing device is used for fixing the printing head, the fixing device is sleeved on the screw rod and can move along the screw rod, and the fixing device is connected with the sliding shaft in a sliding mode through a roller so that the linear driving module can stably run. However, the conventional linear driving module cannot adjust the tightness of the fixing device and the sliding shaft, when the fixing device and the sliding shaft are too tight, friction force is increased to affect sliding, and when the fixing device and the sliding shaft are too loose, position deviation is easy to occur.
Disclosure of Invention
The embodiment of the invention mainly solves the technical problem of providing a linear driving module and a 3D printer, which can adjust the tightness between a fixing device and a sliding shaft.
In order to solve the technical problems, the invention adopts a technical scheme that: provided is a linear driving module, including:
a sliding shaft;
the screw rod can rotate around the axis of the screw rod;
the driving device is connected with the screw rod and is used for driving the screw rod to rotate;
the fixing device is sleeved on the lead screw, the lead screw can drive the fixing device to reciprocate along the length direction of the lead screw, and the fixing device is used for fixing the printing head;
the sliding device is connected with the fixing device and abutted against the sliding shaft, and the sliding device can slide along the sliding shaft;
and the adjusting device is connected with the sliding device and the fixing device and is used for adjusting the distance between the sliding device and the sliding shaft.
In some embodiments, the fixing device includes a sleeve and a fixing seat, the sleeve is fixedly connected to the fixing seat, the sleeve is sleeved on the lead screw, the fixing seat is used for fixing the printing head, and the adjusting device is connected to the fixing seat.
In some embodiments, the adjusting device includes an adjusting wheel and an adjusting shaft, the fixing base is provided with an adjusting hole, the adjusting wheel is rotatably mounted in the adjusting hole, one end of the adjusting shaft is rotatably connected with the sliding device, the sliding device can rotate around the adjusting shaft, the other end of the adjusting shaft penetrates through the fixing base to be connected with the adjusting wheel, and the sliding device and the adjusting wheel are eccentrically arranged.
In some embodiments, the number of the sliding shafts and the number of the adjusting devices are two, the number of the sliding devices is four, the two sliding shafts are respectively located at two sides of the screw rod, the four sliding devices are all connected to the fixing device and abut against the two sliding shafts in pairs respectively, the two adjusting devices are respectively connected with the two sliding devices corresponding to one sliding shaft, and the two adjusting devices are both connected to the fox searching fixing device.
In some embodiments, the sliding shaft further comprises a lubricating device, the lubricating device is fixed on the fixing seat, and one end of the lubricating device is provided with a lubricating groove, and the sliding shaft is at least partially accommodated in the lubricating groove.
In some embodiments, the sliding device is a grooved pulley, and the sliding shaft is at least partially received within a groove of the grooved pulley.
In some embodiments, the fixing seat is provided with a through groove;
the linear driving module further comprises a fixing support, the fixing support comprises a U-shaped shell, a first end cover, a second end cover and an cover plate, the U-shaped shell is provided with an accommodating cavity, a sliding shaft, a screw rod, a driving device and a sliding device are all accommodated in the accommodating cavity, the first end cover is arranged on the first side of the U-shaped shell, the second end cover is arranged on the second side of the U-shaped shell, one end of the cover plate is fixed with the first end cover, and the other end of the cover plate is arranged on the through groove and fixed with the second end cover after the through groove penetrates.
In some embodiments, the driving device further comprises a first fixing member, a first fixing hole is formed at an end portion of the first side of the U-shaped shell, the driving device is provided with a first connecting through hole, the first fixing member is screwed to the first fixing hole after passing through the first connecting through hole, and the first end cap covers the driving device.
In some embodiments, a wire chase is also disposed within the U-shaped housing.
On the other hand, the embodiment of the invention also provides a 3D printer, wherein the 3D printer comprises a printing head and the linear driving module, and the printing head is fixed on a fixing device of the linear driving module.
In an embodiment of the present invention, the linear module includes a sliding shaft, a lead screw, a driving device, a fixing device, a sliding device, and an adjusting device. The screw rod can rotate around the axis of the screw rod. The driving device is connected with the screw rod and used for driving the screw rod to rotate. The fixing device is sleeved on the screw rod, the screw rod can drive the fixing device to reciprocate along the length direction of the screw rod, and the fixing device is used for fixing the printing head. The sliding device is connected with the fixing device and abuts against the sliding shaft, and the sliding device can slide along the sliding shaft. The adjusting device is connected with the sliding device and the fixing device and used for adjusting the distance between the sliding device and the sliding shaft so as to change the prepressing between the sliding device and the sliding shaft and realize the adjustment of the tightness between the fixing device and the sliding shaft.
Drawings
Fig. 1 is a perspective view of a linear driving module according to an embodiment of the present invention;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is an exploded view of the mounting bracket of FIG. 1;
FIG. 4 is a partial exploded view of FIG. 1, including the slide, lead screw, drive and fixing devices;
FIG. 5 is a partial exploded view of FIG. 1, including the fixing means, the sliding means, the adjusting means and the lubricating means;
fig. 6 is a perspective view of a 3D printer according to another embodiment of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical", "horizontal" and the like are used herein for descriptive purposes only. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, a linear driving module 100 according to an embodiment of the present invention can be applied to a 3D printer 200, and the linear driving module 100 includes a fixing bracket 10, a sliding shaft 20, a screw 30, a driving device 40, a fixing device 50, a sliding device 60, and an adjusting device 70. The sliding shaft 20 is mounted on the fixed bracket 10; the screw rod 30 can rotate around the axis thereof relative to the fixed bracket 10; the driving device 40 is arranged on the fixed support 10, the driving device 40 is connected with the screw rod 30, and the driving device 40 is used for driving the screw rod 30 to rotate; the fixing device 50 is sleeved on the screw rod 30, the screw rod 30 can drive the fixing device 50 to reciprocate along the length direction of the screw rod 30, and the fixing device 50 is used for fixing the printing head 230; the sliding device 60 is connected with the fixing device 50, the sliding device 60 abuts against the sliding shaft 20, and the sliding device 60 can slide along the sliding shaft 20; the adjusting device 70 is connected with the sliding device 60 and the fixing device 50, and the adjusting device 70 is used for adjusting the distance between the sliding device 60 and the sliding shaft 20 so as to change the pre-pressure between the sliding device 60 and the sliding shaft 20 and realize the adjustment of the tightness between the fixing device 50 and the sliding shaft 20.
It is understood that, in some other embodiments, the print head 230 may be replaced with other devices or apparatuses to be driven according to actual needs, that is, the fixing device 50 may be used to be fixedly mounted on other devices or apparatuses to be driven, for example, the print head 230 may also be replaced with another linear driving module 100, that is, one linear driving module 100 is fixedly mounted on the fixing device 50 of another linear driving module 100.
Referring to fig. 3, the fixing bracket 10 is a rectangular parallelepiped and includes a U-shaped housing 11, a first end cap 12, a second end cap 13, and a cover plate 14, wherein the first end cap 12, the second end cap 13, and the cover plate 14 are all mounted on the U-shaped housing 11.
The U-shaped housing 11 is provided with a receiving cavity 1101, the sliding shaft 20, the lead screw 30, the sliding device 60 and the adjusting device 70 are all received in the receiving cavity 1101, a portion of the fixing device 50 sleeved with the lead screw 30 is received in the receiving cavity 1101, a portion of the fixing device 50 sleeved with the lead screw 30 can reciprocate in the receiving cavity 1101, the other portion of the fixing device 50 is disposed outside the receiving cavity 1101, and a portion of the fixing device 50 disposed outside the receiving cavity 1101 is used for fixing the print head 230. The bottom of the U-shaped shell is further provided with a wire slot 1102, the wire slot 1102 is arranged along the length direction of the U-shaped shell 11, the wire slot 1102 is used for accommodating a cable electrically connected with the driving device 40, and the cable is routed through the wire slot 1102 to realize the orderly arrangement of the cable.
The first end cap 12 is disposed on a first side of the U-shaped shell 11, the second end cap 13 is disposed on a second side of the U-shaped shell 11, and the first side and the second side are respectively located at two ends of the U-shaped shell 11 in the length direction. The cover plate 14 covers the upper opening of the U-shaped shell 11, the upper opening of the U-shaped shell 11 is opposite to the bottom of the U-shaped shell 11, two ends of the cover plate 14 are respectively connected with the first end cover 12 and the second end cover 13, and the cover plate 14 is used for preventing impurities such as dust from entering the accommodating cavity 1101 from the upper opening of the U-shaped shell 11 and causing pollution.
Specifically, the linear driving module 100 further includes a plurality of first fixing members 101. The first side of the U-shaped shell 11 is provided with a plurality of first fixing holes (not shown), the driving device 40 is provided with a plurality of first connecting through holes (not shown), one first fixing hole corresponds to one first connecting through hole, one first fixing member 101 sequentially penetrates one first connecting through hole and the corresponding first fixing hole, that is, the first fixing member 101 is screwed in the first fixing hole after penetrating the first connecting through hole, so that the driving device 40 is fixed on the first side of the U-shaped shell 11, wherein one surface of the driving device 40 facing the accommodating cavity 1101 abuts against the first side of the U-shaped shell 11, the connection between the driving device 40 and the U-shaped shell 11 is strengthened, the structure of the linear driving module 100 is more compact, and the linear driving module 100 is more stable during operation.
The first side of the U-shaped housing 11 is further provided with a plurality of second fixing holes (not shown), the first end cap 12 is provided with a plurality of second connecting through holes (not shown), one second fixing hole corresponds to one second connecting through hole, the first end cap 12 covers the driving device 40 and covers the first side of the U-shaped housing 11, one first fixing member 101 sequentially penetrates one second connecting through hole and the corresponding second fixing hole, so that the first end cap 12 is fixed on the first side of the U-shaped housing 11, the edge of the first end cap 12 seals the first side of the U-shaped housing 11, the driving device 40 is accommodated in the second end cap 13, and the plurality of first fixing members 101 sequentially penetrate through the bottom of the first end cap 12 and the bottom of the driving device 40, so that the first end cap 12 is fixedly connected with the driving device 40. The second side of the U-shaped shell 11 is further provided with a plurality of third fixing holes (not shown), the second end cap 13 is provided with a plurality of third connecting through holes (not shown), one third fixing hole corresponds to one third connecting through hole, the second end cap 13 is covered on the second side of the U-shaped shell 11, and one first fixing member 101 sequentially penetrates through one third connecting through hole and the corresponding third fixing hole, so that the second end cap 13 is fixed on the second side of the U-shaped shell 11, and the edge of the second end cap 13 seals the second side of the U-shaped shell 11. With the above arrangement, impurities such as dust can be prevented from entering the accommodating chamber 1101 through the first side or the second side of the U-shaped shell 11, and the second end cap 13 can also prevent dust from entering the driving device 40. In a specific embodiment, the first fixing member 101 may be a screw, and the specification of the screw may be selected according to actual needs.
The inner side wall of the U-shaped shell 11 is further provided with a mounting groove 1103, the mounting groove 1103 is arranged along the length direction of the U-shaped shell 11, and the mounting groove 1103 is used for mounting the sliding shaft 20.
The sliding shaft 20 is a smooth cylinder, the sliding shaft 20 is installed in the installation groove 1103, and the sliding shaft 20 is at least partially located outside the installation groove 1103 in its own radial direction to allow the sliding device 60 to be slidable in the axial direction of the sliding shaft 20. In this embodiment, two mounting grooves 1103 are respectively disposed on two opposite inner sidewalls of the U-shaped housing 11, the two mounting grooves 1103 are parallel to each other and have the same height as the bottom of the U-shaped housing 11, and the two sliding shafts 20 are respectively mounted on the two mounting grooves 1103.
In some other embodiments, the sliding shaft 20 may have other structural shapes, and it is only necessary that the sliding shaft 20 allow the sliding device 60 to slide along the axial direction of the sliding shaft 20, for example, the sliding shaft 20 has a semi-cylindrical shape, and the rectangular plane of the sliding shaft 20 faces the mounting groove 1103 and is mounted in the mounting groove 1103.
In some other embodiments, the mounting groove 1103 may be directly omitted, and the sliding shaft 20 is directly fixedly mounted to the fixing bracket 10.
Referring to fig. 4, the lead screw 30 is disposed parallel to the sliding shaft 20, and the two sliding shafts 20 are respectively disposed on two sides of the lead screw 30, and the lead screw 30 can rotate around its own axis relative to the sliding shaft 20. One end of the screw rod 30 is connected with the driving device 40, the second end cover 13 is provided with a screw rod mounting seat (not shown) and a bearing (not shown), the bearing is mounted on the screw rod mounting seat, the other end of the screw rod 30 penetrates through the bearing, and the driving device 40 can drive the screw rod 30 to rotate around the axis of the screw rod 30.
Specifically, the lead screw 30 includes a lead screw body 31 and a coupling nut 32. The lead screw body 31 is arranged in parallel with the sliding shafts 20, the two sliding shafts 20 are respectively arranged at two sides of the lead screw body 31, and the lead screw body 31 can rotate around the axis of the lead screw body 31 relative to the fixed support 10. One end of the screw rod body 31 is connected with the driving device 40, and the other end of the screw rod body 31 penetrates through the bearing. The connecting nut 32 is sleeved on the lead screw body 31 and is in threaded connection with the lead screw body 31, the lead screw body 31 can drive the connecting nut 32 to reciprocate along the length direction of the lead screw body 31, the fixing device 50 is sleeved on the connecting nut 32, and the fixing device 50 can reciprocate along with the connecting nut 32 along the length direction of the lead screw body 31.
The coupling nut 32 includes a nut body 321 and a flange 322, and the flange 322 is fixedly coupled to one end of the nut body 321. The nut body 321 is sleeved on the lead screw body 31 and is in threaded connection with the lead screw body 31, and the fixing device 50 is sleeved on the nut body 321. The linear driving module 100 further includes a second fixing member 102, an end surface of the fixing device 50 is engaged with an end surface of the flange 322, and the second fixing member 102 sequentially penetrates through the flange 322 and the fixing device 50, so that the connection nut 32 is fixedly connected to the fixing device 50. In a specific embodiment, the second fixing member 102 may be a screw, and the size of the screw may be selected according to actual needs.
Further, the screw 30 further comprises a gap eliminating nut 33, the gap eliminating nut 33 is sleeved on the screw body 31 and connected with the connecting nut 32, and the gap eliminating nut 33 is used for eliminating an axial gap of the connecting nut 32 in the movement process.
Specifically, the anti-backlash nut 33 includes an adjustment nut 331 and an elastic member 332. The adjusting nut 331 is sleeved on the lead screw body 31 and is in threaded connection with the lead screw body 31, the elastic member 332 is sleeved on the lead screw body 31, one end of the elastic member 332 is connected to the connecting nut 32, and the other end of the elastic member 332 is connected to the adjusting nut 331. The fixing device 50 is sleeved on the connecting nut 32 and the adjusting nut 331. When the lead screw body 31 and/or the connecting nut 32 are worn, the adjusting nut 331 is adjusted by the acting force of the elastic member 332, so that the threads of the connecting nut 32 are radially contracted in the process that the adjusting nut 331 moves along the axial direction of the lead screw body 31, and the threads of the connecting nut 32 are meshed with the threads of the lead screw body 31 to achieve the effects of automatic compensation and clearance elimination. In a specific embodiment, the elastic member 332 may be a compression spring, or may be another component having elastic force, such as a torsion spring.
In some other embodiments, the connection nut 32 and the anti-backlash nut 33 may be omitted, the fixing device 50 is directly sleeved on the lead screw body 31 and is in threaded connection with the lead screw body 31, and the lead screw body 31 may directly drive the fixing device 50 to reciprocate along the length direction of the lead screw body 31.
The driving device 40 includes a motor 41, a mounting seat 42, a base 43, and a coupling 44. The mounting seat 42 and the base 43 are respectively and fixedly mounted on two sides of the motor 41, the base 43 is far away from the output end of the motor 41 relative to the mounting seat 42, and the output end of the motor 41 penetrates through the mounting seat 42. The first connecting through hole is provided in the mounting seat 42, and the mounting seat 42 is mounted on the first side of the U-shaped housing 11. The coupler 44 connects the output end of the motor 41 and the lead screw body 31, and the motor 41 can drive the lead screw body 31 to rotate around its axis relative to the fixing bracket 10 through the coupler 44, so that the lead screw 30 can drive the fixing device 50 to reciprocate along the length direction of the lead screw body 31. The output end of the motor 41 and one end of the lead screw body 31 are respectively inserted into the couplers 44 from two ends of the couplers 44, so that the output end of the motor 41 is connected with the lead screw body 31.
Referring to fig. 4 and 5, the fixing device 50 includes a socket 51 and a fixing base 52, and the socket 51 is fixedly connected to the fixing base 52. The socket 51 is sleeved on the connecting nut 32, the socket 51 is accommodated in the accommodating cavity 1101, and the lead screw body 31 can drive the socket 51 to reciprocate along the length direction of the lead screw body 31 through the connecting nut 32. The portion of the fixing base 52 away from the socket 51 is disposed outside the receiving cavity 1101, and the fixing base 52 is used for fixing the print head 230.
The socket 51 is provided with a socket hole 5101, and the inner side wall of the socket hole 5101 is socket-connected to the outer side wall of the nut body 321, so that the socket 51 can reciprocate along the length direction of the lead screw body 31 along with the connecting nut 32. One end face of the socket 51 is fitted with one end face of the flange 322, and the second fixing member 102 penetrates the flange 322 and the socket 51 in sequence.
The fixing seat 52 is provided with a through slot 5201, one end of the cover plate 14 is inserted into the first end cover 12, the other end of the cover plate 14 is inserted into the second end cover 13 after passing through the through slot 5201, and the through slot 5201 can reciprocate along the length direction of the cover plate 14. The print head 230 may be mounted on a side of the holder 52 remote from the socket 51.
The sliding device 60 is rotatably connected with the fixing device 50, so that the sliding device 60 can move with the fixing device 50, and the sliding device 60 can rotate around its axis relative to the fixing device 50, and the sliding device 60 is also slidably connected with the sliding shaft 20, and the sliding device 60 slides along the axial direction of the sliding shaft 20 and rotates around its axis when moving with the fixing device 50, that is, the sliding device 60 can roll along the axial direction of the sliding shaft 20.
In this embodiment, the sliding device 60 is a grooved pulley, the outer side wall of the circumference of the grooved pulley is provided with a groove 601, the groove 601 is arranged along the circumference of the grooved pulley, the groove 601 is adapted to the outer side wall of the sliding shaft 20, the sliding shaft 20 is at least partially accommodated in the groove 601 of the grooved pulley, and the groove 601 abuts against the sliding shaft 20 and can roll along the sliding shaft 20.
In some other embodiments, the sliding shaft 20 may be omitted, and the inner side wall of the U-shaped housing 11 is provided with a sliding groove along the length direction of the U-shaped housing 11, and the mounting groove 1103 is used for cooperating with the sliding device 60. The sliding device 60 is a flange pulley, the outer circumferential wall of the flange pulley is provided with a flange, the flange is arranged along the circumferential direction of the flange pulley, the flange is matched with the sliding groove, at least part of the flange is contained in the sliding groove, and the flange is abutted against the sliding groove and can roll along the length direction of the sliding groove.
The adjustment device 70 comprises an adjustment wheel 71 and an adjustment shaft 72. The fixing seat 52 is provided with an adjusting hole 5202 and a through hole 5203, and the adjusting hole 5202 and the through hole 5203 communicate with each other. The adjusting wheel 71 is rotatably mounted in the adjusting hole 5202, the adjusting wheel 71 can rotate around its own rotation axis relative to the mounting base 42, one end of the adjusting shaft 72 is rotatably connected with the sliding device 60, the sliding device 60 can rotate around the adjusting shaft 72, the other end of the adjusting shaft 72 passes through the through hole 5203 to be connected with the adjusting wheel 71, and the sliding device 60 and the adjusting wheel 71 are eccentrically arranged, that is, the axis of the sliding device 60 does not coincide with the rotation axis of the adjusting wheel 71. When the adjusting wheel 71 is rotated, the adjusting shaft 72 can rotate with the adjusting wheel 71 and drive the sliding device 60 to rotate around the rotating shaft of the adjusting wheel 71, so that the sliding device 60 can move towards or away from the sliding shaft 20, and the adjustment of the distance between the sliding device 60 and the sliding shaft 20 is realized.
In some other embodiments, the adjustment hole 5202 may be omitted, the adjustment wheel 71 and the sliding device 60 may be disposed on both sides of the through hole 5203, respectively, and the adjustment shaft 72 may pass through the through hole 5203 and be connected to the adjustment wheel 71 and the sliding device 60, respectively.
In the present embodiment, the adjusting wheel 71 is an eccentric wheel structure, the adjusting wheel 71 is provided with a connecting hole 7101, an axis of the connecting hole 7101 is offset from a rotating shaft of the adjusting wheel 71, that is, the axis of the connecting hole 7101 does not coincide with a rotating axis of the adjusting wheel 71, and the rotating shaft of the adjusting wheel 71 is the axis of the adjusting wheel 71. One end of the adjusting shaft 72 is rotatably connected to the sliding device 60, and the axis of the adjusting shaft 72 is disposed to coincide with the axis of the sliding device 60, and the other end of the adjusting shaft 72 passes through the through hole 5203 and is fixedly connected to the connecting hole 7101, so that the axis of the sliding device 60 is deviated from the axis of the adjusting wheel 71. Moreover, the aperture of the through hole 5203 is larger than the diameter of the adjusting shaft 72, so as to allow the adjusting shaft 72 to rotate around the rotation axis of the adjusting wheel 71 in the through hole 5203 when rotating with the adjusting wheel 71.
In some other embodiments, the axis of the connecting hole 7101 coincides with the axis of the adjusting wheel 71, the adjusting shaft 72 includes a parallel portion (not shown) and a perpendicular portion (not shown), the parallel portion is parallel to the adjusting wheel 71 and the sliding device 60, the two perpendicular portions extend from two ends of the parallel portion to opposite directions, the two perpendicular portions are perpendicular to the parallel portion, one perpendicular portion is fixedly connected to the connecting hole 7101 through the through hole 5203, and the other perpendicular portion is rotatably connected to the sliding device 60 and has an axis coinciding with the axis of the sliding device 60, so that the axis of the sliding device 60 deviates from the axis of the adjusting wheel 71.
Further, the fixed seat 52 is provided with an adjusting opening 5204, the adjusting opening 5204 penetrates through the side wall of the fixed seat 52 and communicates with the adjusting hole 5202, the outer side wall of the adjusting wheel 71 communicates with the outside through the adjusting opening 5204, and the adjusting opening 5204 is used for allowing a user to rotatably adjust the adjusting wheel 71 therethrough, so that the adjusting wheel 71 can rotate around its axis, thereby realizing adjustment of the distance between the sliding device 60 and the sliding shaft 20.
In the present embodiment, the number of the sliding shafts 20 and the adjusting devices 70 is two, and the number of the sliding devices 60 is four. The two sliding shafts 20 are respectively located at two sides of the screw rod 30, the four sliding devices 60 are all connected to the fixed seat 52 and respectively abut against the two sliding shafts 20 two by two, that is, one sliding shaft 20 is correspondingly provided with two sliding devices 60 abutting against the sliding shaft, the two adjusting devices 70 are respectively connected with the two sliding devices 60 corresponding to one sliding shaft 20, and the two adjusting devices 70 are all connected to the fixed seat 52, that is, the two adjusting devices 70 are connected between the fixed seat 52 and the corresponding one sliding shaft 20. The two adjusting devices 70 can respectively adjust the distance between the two sliding devices 60 connected thereto and the corresponding sliding shaft 20, so as to adjust the tightness between the fixing device 50 and the corresponding sliding shaft 20, that is, to realize the unilateral adjustment of the tightness between the fixing device 50 and the corresponding sliding shaft 20, so as to simplify the structure and the adjusting steps of the linear driving module 100, and to facilitate the reduction of the cost and the improvement of the adjusting efficiency.
In some other embodiments, the number of the sliding shafts 20, the adjusting devices 70 and the sliding devices 60 are two, two sliding shafts 20 are respectively located at two sides of the screw rod 30, one sliding device 60 abuts against one sliding shaft 20, that is, one sliding shaft 20 is correspondingly provided with one sliding device 60 abutting against the sliding shaft, and one adjusting device 70 is respectively connected with the fixing device 50 and one sliding device 60, that is, one sliding device 60 corresponding to one sliding shaft 20 is provided with one adjusting device 70. One adjusting device 70 can adjust the distance between one sliding device 60 connected thereto and the corresponding one sliding shaft 20, so as to adjust the tightness between the fixing device 50 and the two sliding shafts 20, that is, to adjust the tightness between the fixing device 50 and the sliding shafts 20 bilaterally.
It is understood that in some other embodiments, the number of the adjusting devices 70 and the sliding devices 60 can be selected according to actual needs, and can also be set as a double-sided or single-sided adjusting manner according to actual needs, for example, the number of the sliding devices 60 and the adjusting devices 70 is four, one sliding device 60 is correspondingly connected with one adjusting device 70, and one sliding shaft 20 is correspondingly provided with two sliding devices 60 abutted thereto, so as to realize a double-sided adjusting manner.
The linear driving module 100 further includes a lubricating device 80, the lubricating device 80 is fixed to the fixing base 52, one end of the lubricating device 80 is provided with a lubricating groove 801, at least a portion of the sliding shaft 20 is accommodated in the lubricating groove 801, and the lubricating groove 801 is used for abutting against the sliding shaft 20 to lubricate the sliding shaft 20.
The lubricating device 80 includes a stick 81 and a fixed plate 82. The lubricating grooves 801 are provided at both ends of the lubricating block 81, and the lubricating grooves 801 are fitted to the outer side wall of the slide shaft 20. The end surface of the fixing device 50 is provided with a fixing groove 501, the fixing groove 501 is shaped like Contraband, the lubricant block 81 is attached to the fixing groove 501, and both ends of the lubricant block 81 respectively pass through the fixing groove 501 and respectively contact with the corresponding slide shaft 20. Lubricating block 81 is provided with joint groove 8101, and joint groove 8101 joint in a lateral wall of fixed slot 501, and fixed plate 82 lid is located the notch of fixed slot 501 and fixed mounting in fixing device 50's terminal surface, and fixed plate 82 supports tightly in lubricating block 81 for lubricating block 81 is fixed in joint groove 8101. Optimally, two opposite end surfaces of the fixing device 50 are respectively provided with a clamping groove 8101, and each clamping groove 8101 is correspondingly provided with a lubricating device 80, so as to improve the lubricating effect of the sliding shaft 20 and ensure that the sliding device 60 can smoothly roll on the outer side wall of the sliding shaft 20. In a specific embodiment, the lubricant block 81 may be wool felt, the wool felt is mounted to the fixing device 50 after being soaked with lubricant, and the fixing plate 82 may be fixedly mounted to the fixing device 50 by screws.
The linear driving module 100 further includes a detecting device (not shown) installed on the fixing bracket 10, and the detecting device is used for detecting whether the fixing device 50 reaches a predetermined position. In this embodiment, the detection device is a limit switch, the limit switch is installed on the second end cap 13, and an activation end of the limit switch is disposed facing the fixing device 50, when the driving device 40 drives the screw rod 30 to rotate so that the fixing device 50 moves to an end of the screw rod 30 far away from the driving device 40, the fixing device 50 abuts against the limit switch to activate the limit switch, and the limit switch sends a signal and controls the driving device 40 to drive the screw rod 30 to rotate reversely so that the fixing device 50 moves towards the driving device 40.
Referring to fig. 6, in another aspect, the embodiment of the invention further provides a 3D printer 200, which includes a mounting platform 210, a printing table 220, a printing head 230, an unwinding device 240, a control panel 250, and the linear driving module 100, wherein the printing table 220, the printing head 230, the unwinding device 240, the control panel 250, and the linear driving module 100 are all mounted on the mounting platform 210. The printing table 220 is used for bearing a printing medium, the printing head 230 is used for performing printing processing on the printing medium, the unwinding device 240 is used for storing a printing material and outputting the printing material to the printing head 230, and the control panel 250 is used for providing a user operation interface to control the operation of the 3D printer 200.
In this embodiment, the 3D printer 200 includes four linear driving modules 100, and at least one linear driving module 100 is respectively disposed in the directions of the X axis, the Y axis, and the Z axis of the 3D printer 200. Specifically, in the X-axis direction, a linear driving module 100 is disposed parallel to the mounting platform 210 and is fixedly mounted on the mounting platform 210, the printing table 220 is fixedly mounted on the fixing device 50 of the linear driving module 100, and the linear driving module 100 can drive the printing table 220 to reciprocate along the X-axis direction. In the Z-axis direction, the two linear driving modules 100 are symmetrical to both sides of the linear driving module 100 disposed in the X-axis direction, and the two linear driving modules 100 are perpendicular to the mounting platform 210 and are fixedly mounted on the mounting platform 210. In the Y-axis direction, both ends of one linear driving module 100 are respectively and fixedly mounted on the fixing devices 50 of two linear driving modules 100 in the Z-axis direction, two linear driving modules 100 in the Z-axis direction can simultaneously drive the linear driving module 100 in the Y-axis direction to reciprocate along the Z-axis direction, the printing head 230 is fixedly mounted on the fixing devices 50 of the linear driving modules 100 in the Y-axis direction, and the linear driving module 100 in the Y-axis direction can drive the printing head 230 to reciprocate along the Y-axis direction. The unwinding device 240 is fixedly installed on the linear driving module 100 in the Z-axis direction, and the unwinding device 240 is used for storing printing materials and delivering the printing materials to the print head 230.
It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A linear drive module, comprising:
a sliding shaft;
the screw rod can rotate around the axis of the screw rod;
the driving device is connected with the screw rod and is used for driving the screw rod to rotate;
the fixing device is sleeved on the lead screw, the lead screw can drive the fixing device to reciprocate along the length direction of the lead screw, and the fixing device is used for fixing the printing head;
the sliding device is connected with the fixing device and abutted against the sliding shaft, and the sliding device can slide along the sliding shaft;
and the adjusting device is connected with the sliding device and the fixing device and is used for adjusting the distance between the sliding device and the sliding shaft.
2. The linear drive module of claim 1,
the fixing device comprises a sleeve piece and a fixing seat, the sleeve piece is fixedly connected with the fixing seat, the sleeve piece is sleeved on the screw rod, the fixing seat is used for fixing the printing head, and the adjusting device is connected with the fixing seat.
3. The linear drive module of claim 2,
adjusting device includes regulating wheel and regulating spindle, the fixing base is provided with the regulation hole, the regulating wheel rotate install in the regulation hole, the one end of regulating spindle with slider rotates to be connected, slider can wind the regulating spindle rotates, the other end of regulating spindle passes the fixing base with the regulating wheel is connected, and slider with regulating wheel eccentric settings.
4. The linear drive module of claim 2,
the number of the sliding shafts and the number of the adjusting devices are two, the number of the sliding devices is four, the two sliding shafts are respectively located on two sides of the screw rod, the four sliding devices are connected to the fixing device and are respectively abutted against the two sliding shafts in pairs, the two adjusting devices are respectively connected with the two sliding devices corresponding to the one sliding shaft, and the two adjusting devices are connected to the fixing device.
5. The linear drive module of claim 2,
the sliding shaft is characterized by further comprising a lubricating device, wherein the lubricating device is fixed on the fixing seat, a lubricating groove is formed in one end of the lubricating device, and at least part of the sliding shaft is contained in the lubricating groove.
6. The linear drive module of claim 2,
the sliding device is a groove pulley, and at least part of the sliding shaft is accommodated in a groove of the groove pulley.
7. The linear drive module of claim 2,
the fixed seat is provided with a through groove;
the linear driving module further comprises a fixing support, the fixing support comprises a U-shaped shell, a first end cover, a second end cover and an cover plate, the U-shaped shell is provided with an accommodating cavity, a sliding shaft, a screw rod, a driving device and a sliding device are all accommodated in the accommodating cavity, the first end cover is arranged on the first side of the U-shaped shell, the second end cover is arranged on the second side of the U-shaped shell, one end of the cover plate is fixed with the first end cover, and the other end of the cover plate is arranged on the through groove and fixed with the second end cover after the through groove penetrates.
8. The linear drive module of claim 7,
still include first mounting, the tip of the first side of U-shaped shell is provided with first fixed orifices, drive arrangement is provided with first connect the via hole, first mounting passes behind the first connect the via hole spiro union in first fixed orifices, first end cap establishes drive arrangement.
9. The linear drive module of claim 7,
and a wire groove is also arranged in the U-shaped shell.
10. A 3D printer comprising a print head and a linear drive module according to any one of claims 1 to 9, the print head being secured to a fixture of the linear drive module.
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| CN201911400686.2A CN111016173A (en) | 2019-12-30 | 2019-12-30 | A linear drive module and 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911400686.2A CN111016173A (en) | 2019-12-30 | 2019-12-30 | A linear drive module and 3D printer |
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| CN115091752A (en) * | 2022-06-28 | 2022-09-23 | 深圳市创想三维科技股份有限公司 | Transmission module and 3D printing apparatus |
| WO2023279889A1 (en) * | 2021-07-06 | 2023-01-12 | 深圳市纵维立方科技有限公司 | Transmission assembly and three-dimensional printing device |
| WO2023051016A1 (en) * | 2021-09-30 | 2023-04-06 | 深圳市创想三维科技股份有限公司 | Z-axis structure and 3d printer |
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