CN207161637U - A kind of 3D printer automatic belt tensioning device - Google Patents
A kind of 3D printer automatic belt tensioning device Download PDFInfo
- Publication number
- CN207161637U CN207161637U CN201720953342.4U CN201720953342U CN207161637U CN 207161637 U CN207161637 U CN 207161637U CN 201720953342 U CN201720953342 U CN 201720953342U CN 207161637 U CN207161637 U CN 207161637U
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- China
- Prior art keywords
- belt
- torsion spring
- connecting rod
- tensioning device
- base
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of 3D printer automatic belt tensioning device, the device include base (1), connecting rod (5), torsion spring (4) and belt pressing device (7)；The one end of connecting rod (5) is arranged on base (1), and belt pressing device (7) is installed on the other end of connecting rod (5), it is characterised in that：Torsion spring (4) is stuck in the torsional spring slot (12) in the end of the close base (1) of connecting rod (5), connecting rod (5) can be rotated centered on the rotating shaft of torsion spring (4), base (1) is fixed on the one side for the width for being arranged at belt (6) and moving member (13) with belt movement, and belt pressing device (7) is against the another side of the width of belt (6).The automatic belt tensioning device is compact-sized, does not influence the motion of belt, and belt tension can be kept constant, avoids jumping tooth, vibration because belt slack causes, so as to cause the situation of model printing failure, improves printing precision.
Description
Technical field
It the utility model is related to a kind of automatic belt tensioning device, more particularly to a kind of 3D printer belt auto-tensioning dress
Put, belong to 3D printing apparatus field.
Background technology
3D printing is one kind of rapid shaping technique, and it is a kind of based on mathematical model file, utilizes laser beam, heat
The special materials such as metal dust, ceramic powders, plastics, cell tissue are carried out successively accumulation and cohered by the modes such as melt-blown mouth, finally
Superposition shaping, produces entity products.Nowadays 3D printing technique is in Making mold, industrial design, Aero-Space, cultural skill
The fields such as art, engraving have obtained widely applying.
It is by thread heat-fusible materials heating and melting, simultaneously using the 3D printer of fused glass pellet (FDM) principle
Three-dimensional nozzle under control of the computer, according to section profile information, by material selectivity applies on the table, fast quickly cooling
But a layer cross section is formed afterwards；After the completion of one formable layer, it is next that machine operation platform declines height (i.e. lift height) reshaping
Layer, until forming whole solid modelling.
At present, 3D printer (such as desktop 3D printer) is simple in construction, and its transmission device is based on toothed belt transmission, together
Step V belt translation have it is simple in construction, work when it is fricton-tight, have accurate gearratio, transmission efficiency, good energy-conserving effect, transmission model
Enclose the advantages that big, compact-sized；But belt slack occurs unavoidably during timing belt use, cause timing belt occur jump tooth,
A problem that vibration, so as to cause the print quality of 3D printer to decline.
The device of existing belt tension includes the fixed block at fixed belt both ends being bolted together, but
The volume of this kind of device belt fixing end is larger, and its stroke of tension is smaller, is not suitable for being used in compact-sized small-sized 3D
In printer；The device of existing belt tension is also stuck on belt including the use of torsion spring, or sets two tensioner arms, wherein
One end of two tensioner arms is connected by axle sleeve, and torsion spring is socketed on axle sleeve, and the other end of two tensioner arms, which is provided with, to be used for
The fixing axle of tensioning plate is installed, two tensioning plates are separately positioned on the both sides of the width of belt, but described two devices
The motion of belt can be influenceed if longer torsion spring/arm is selected, selects shorter torsion spring/arm to be then tensioned limited in one's ability, therefore
It is also not suitable for being used in compact-sized small-sized 3D printer；The device of existing belt tension also including the use of tensioning wheel,
But in this device, independent support/control system is typically provided with to support the elastic component being connected with tensioning wheel, whole tensioning
Mechanism structure is complicated, and space-consuming is big, prior art also include by the elastic component being connected with tensioning wheel be connected to belt some
On belt wheel, but now shorter elastic component is selected then to be tensioned energy if selecting longer elastic component to influence the motion of belt
Power is limited；Therefore, described device is also not suitable for being used in compact-sized small-sized 3D printer.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of compact-sized belt stretcher, it can realize that 3D is beaten
The auto-tensioning of belt in print machine, ensures belt slack degree of having, and improves the kinetic stability of nozzle component, so as to improve 3D printing
The print quality of machine (such as desktop 3D printer).
According to a kind of automatic belt tensioning device provided by the utility model, it includes：Base 1, connecting rod 5, torsion spring 4, with
And belt pressing device；The one end of connecting rod 5 is arranged on base 1, and belt pressing device is installed on the other end of connecting rod 5, and its feature exists
In：Torsion spring 4 is stuck in the torsional spring slot 12 in the end of the close base 1 of connecting rod 5, and connecting rod 5 can be with the rotating shaft of torsion spring 4
Centered on rotate, and base 1 be fixed on the width for being arranged at belt 6 one side and with belt move moving member 13
On, belt pressing device is against the another side of the width of belt 6.
The automatic belt tensioning device provided by the utility model also uses following attached technical scheme：
The end described above of the connecting rod 5 is placed between the bearing 9 of base 1, the hole 11 of the end of connecting rod 5
Coaxial with the hole in the bearing 9 of torsion spring 4 and base 1, torsion spring rotating shaft 2 passes sequentially through hole, the end of connecting rod 5 in bearing 9
Hole 11, torsion spring 4 at portion are simultaneously fixed against the axial float of torsion spring rotating shaft 2 with rotating shaft fixing nut 3.
The torsion spring rotating shaft 2 is multi-diameter shaft, with the assembling of fixing nut 3 at have with nut coordinate screw thread.
The belt pressing device is synchronous pulley 7, and synchronous pulley 7 is fixedly mounted on the other end of connecting rod 5 by nut 8
Portion, the inner or outer side of the another side of the width for the belt 6 that synchronous pulley 7 is tensioned with needs is ratcheting, synchronous pulley 7
Belt 6 is compressed, when belt 6 relaxes, connecting rod 5 rotates under the active force of torsion spring 4, until the tensile force of belt 6 reaches
Make the value of connecting rod stress balance, belt 6 is tensioned.
The automatic belt tensioning device is a kind of automatic belt tensioning device applied to 3D printer, the belt 6
It is the belt of 3D printer.
The base 1 is fixed on the moving member 13 moved with belt with screw by mounting hole 10.
It is f in the minimum force for deforming belt 6 perpendicular to belt direction when the belt 6 is in tensioning state, torsion spring 4
Center to the distance of belt 6 is d, then the maximum working torque of torsion spring 4 is T=f*d, according to cylindroid helical-coil torsion spring computational methods
Choose the torsion spring 4 of suitable moment of torsion.
Compared with prior art, the beneficial effects of the utility model are：
Automatic belt tensioning device of the present utility model by floor installation on the moving member moved with belt, being capable of basis
The length of the two back gauges selection connecting rod of belt, whole automatic belt tensioning device is compact-sized, does not interfere with the motion of belt,
And belt tension can be kept constant, avoid and tooth, vibration etc., the model caused by are jumped because of caused by belt slack
The situation of failure is printed, improves printing precision.
Brief description of the drawings
Fig. 1 is the structure chart of automatic belt tensioning device of the present utility model.
Fig. 2 is the understructure figure of automatic belt tensioning device of the present utility model.
Fig. 3 is the bar linkage structure figure of automatic belt tensioning device of the present utility model.
Fig. 4 is a concrete application example of the automatic belt tensioning device of the present utility model in 3D printer.
Embodiment
As shown in Figure 1,2,3, 4, the utility model includes base 1, torsion spring rotating shaft 2, rotating shaft fixing nut 3, torsion spring 4, company
Bar 5, belt 6, synchronous pulley 7, nut 8；Wherein synchronous pulley 7 is also referred to as idle pulley.
Base 1 is fixed on the moving member 13 moved with belt with screw by mounting hole 10；The one end of connecting rod 5 is placed on
Between the bearing 9 of base 1, and the hole 11 in connecting rod 5 and the hole in the bearing 9 of base 1 are coaxial, and torsion spring 4 is stuck in the torsion spring of connecting rod 5
It is in groove 12 and coaxial with hole 11；Torsion spring rotating shaft 2 passes sequentially through to hole in bearing 9, hole 11, torsion spring 4, and with rotating shaft fixing nut
3 are fixed against the axial float of torsion spring rotating shaft 2, and wherein torsion spring rotating shaft 2 is multi-diameter shaft, with the assembling of fixing nut 3 at have and spiral shell
The screw thread that mother coordinates, connecting rod 5 can be rotated centered on torsion spring rotating shaft.Synchronous pulley 7 is arranged on the other end of connecting rod 5 and uses spiral shell
Mother 8 fixes, to prevent the axial float of synchronous pulley 7；Synchronous pulley 7 engages with the belt for needing to be tensioned, and is pressed on belt,
When belt relaxes, connecting rod 5 rotates under the active force of torsion spring, so as to compress belt.
It is real according to a concrete application of the automatic belt tensioning device of the present utility model illustrated in fig. 4 in 3D printer
Example, belt 6 are held within belt by two synchronous drives of synchronous pulley 14, the base 1 of the automatic belt tensioning device
One side of width and with belt movement moving member 13 on, there is outside pretightning force, the belt by torsion spring 4
The synchronous pulley 7 of automatic takeup engages with the inner side of the another side of the width of belt, and synchronous pulley 7 compresses belt,
When belt relaxes, connecting rod 5 rotates under the active force of torsion spring 4, so as to compress belt.
In another embodiment, torsion spring 4 has inside pretightning force, the synchronous pulley 7 of the automatic belt tensioning device
It can be engaged with the outside of the another side of the width of belt, synchronous pulley 7 compresses belt, when belt relaxes, connecting rod 5
Rotated under the active force of torsion spring 4, so as to compress belt.
On the selection of torsion spring, if belt is in tensioning state, the minimum of belt deformation is made perpendicular to belt direction
Power is f, and the distance at torsion spring center to belt is d, then torsion spring maximum working torque is T=f*d, according to cylindroid helical-coil torsion spring
Computational methods can choose the torsion spring of suitable moment of torsion.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be changed in the case where not departing from the principle of this practical utility model and spirit, this
The scope of utility model is defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of automatic belt tensioning device, including：Base (1), connecting rod (5), torsion spring (4) and belt pressing device；Connecting rod (5)
One end be arranged on base (1), belt pressing device is installed on the other end of connecting rod (5), it is characterised in that：Torsion spring (4) blocks
In torsional spring slot (12) in the end of the close base (1) of connecting rod (5), connecting rod (5) can be with the rotating shaft of torsion spring (4)
Centered on rotate, base (1) be fixed on the one side for the width for being arranged at belt (6) and with belt move moving member (13)
On, belt pressing device is against the another side of the width of belt (6).
2. automatic belt tensioning device according to claim 1, it is characterised in that：Put the end of the connecting rod (5)
Put between the bearing (9) of base (1), hole (11) and torsion spring 4 and the bearing of base (1) of the end of connecting rod (5)
(9) hole in is coaxial, torsion spring rotating shaft (2) pass sequentially through hole in bearing (9), connecting rod (5) the end hole (11), turn round
Spring (4) is simultaneously fixed against torsion spring rotating shaft (2) axial float with rotating shaft fixing nut (3).
3. automatic belt tensioning device according to claim 2, it is characterised in that：The torsion spring rotating shaft (2) is multi-diameter shaft,
With fixing nut (3) assembling at have with nut coordinate screw thread.
4. according to the automatic belt tensioning device described in one of claim 1-3, it is characterised in that：The belt pressing device is synchronous
Belt wheel (7).
5. according to the automatic belt tensioning device described in one of claim 1-3, it is characterised in that：The belt auto-tensioning dress
It is a kind of automatic belt tensioning device applied to 3D printer to put, and the belt (6) is the belt of 3D printer.
6. automatic belt tensioning device according to claim 4, it is characterised in that：The automatic belt tensioning device is one
Automatic belt tensioning device of the kind applied to 3D printer, the belt (6) is the belt of 3D printer.
7. according to the automatic belt tensioning device described in one of claim 1-3, it is characterised in that：The base (1) uses spiral shell
Nail is fixed on the moving member (13) moved with belt by mounting hole (10).
8. according to the automatic belt tensioning device described in one of claim 1-3, it is characterised in that：The belt (6), which is in, opens
It is f in the minimum force for deforming belt (6) perpendicular to belt direction during tight state, the distance at torsion spring (4) center to belt (6)
For d, then torsion spring (4) maximum working torque is T=f*d, and suitable moment of torsion is chosen according to cylindroid helical-coil torsion spring computational methods
Torsion spring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720953342.4U CN207161637U (en) | 2017-08-02 | 2017-08-02 | A kind of 3D printer automatic belt tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720953342.4U CN207161637U (en) | 2017-08-02 | 2017-08-02 | A kind of 3D printer automatic belt tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161637U true CN207161637U (en) | 2018-03-30 |
Family
ID=61714822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720953342.4U Expired - Fee Related CN207161637U (en) | 2017-08-02 | 2017-08-02 | A kind of 3D printer automatic belt tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207161637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299967A (en) * | 2017-08-02 | 2017-10-27 | 北京卫星制造厂 | A kind of 3D printer automatic belt tensioning device and its method |
| WO2022110449A1 (en) * | 2020-11-30 | 2022-06-02 | 深圳市创想三维科技有限公司 | 3d printer and belt tensioning apparatus thereof |
-
2017
- 2017-08-02 CN CN201720953342.4U patent/CN207161637U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299967A (en) * | 2017-08-02 | 2017-10-27 | 北京卫星制造厂 | A kind of 3D printer automatic belt tensioning device and its method |
| WO2022110449A1 (en) * | 2020-11-30 | 2022-06-02 | 深圳市创想三维科技有限公司 | 3d printer and belt tensioning apparatus thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100080 South Third Street, Zhongguancun, Haidian District, Haidian District, Beijing Patentee after: BEIJING SATELLITE MANUFACTURING FACTORY Co.,Ltd. Address before: 100080 South Third Street, Zhongguancun, Haidian District, Haidian District, Beijing Patentee before: Beijing Satellite Manufacturing Factory |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180529 Address after: 100091 South Third Street, Zhongguancun, Haidian District, Haidian District, Beijing Patentee after: BEIJING XCHD SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 100080 South Third Street, Zhongguancun, Haidian District, Haidian District, Beijing Patentee before: BEIJING SATELLITE MANUFACTURING FACTORY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 Termination date: 20200802 |