CN204749299U - High position detecting device of 3D print platform working face - Google Patents
High position detecting device of 3D print platform working face Download PDFInfo
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- CN204749299U CN204749299U CN201520547649.5U CN201520547649U CN204749299U CN 204749299 U CN204749299 U CN 204749299U CN 201520547649 U CN201520547649 U CN 201520547649U CN 204749299 U CN204749299 U CN 204749299U
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- working face
- print platform
- cantilever
- platform working
- photoelectric sensor
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Abstract
The utility model relates to a 3D printing apparatus technical field, concretely relates to high position detecting device of 3D print platform working face. The utility model provides a pair of high position detecting device of 3D print platform working face, the base plate of spacing post is equipped with including the intermediate position, the base plate is equipped with pivot and photoelectric sensor, the pivot with be connected around its axle center pivoted cantilever, the response end of cantilever sets up in the photoelectricity induction zone of photoelectric sensor and can do the back and forth movement, the up -and -down motion is done in axle center that the probe end of cantilever revoluted the axle, a side of base plate is equipped with the mounting groove of being connected with the 3D printer. The utility model discloses a special design's cantilever detects the position of 3D print platform working face to the adoption is inserted the method of branch measuring and is offset the error of switch, realizes accurate reliable position and detects.
Description
Technical field
The utility model relates to 3D printing device technical field, and what be specifically related to is a kind of height position detector of 3D print platform working face.
Background technology
In prior art, the application that 3D prints is more and more extensive, and its application comprises industrial design, Making mold, health care and teaching field.High-end 3D prints function and directly prints wing and firearms, can directly print Bones and joints, tooth in clinical.3D print procedure carries out automation, reduces the technical threshold of 3D printing, plays an important role for the universal of 3D print application.It is the process of successively Tectonic superimposition that 3D prints, ground floor on 3D print platform, namely initial layers, printing be the basis that succeeding layer prints.If from the hypertelorism of 3D print platform when initial layers prints, the entity of printing just can not be attached on 3D print platform securely, follow-up 3D prints just probably to misplace and even comes off; If distance is too near, printhead can be caused to block and even to damage printhead.So detect the height and position of 3D print platform, thus accurately controlling the printing height of initial layers, is vital for successfully carrying out 3D printing.The detection of 3D print platform height and position normally adopts mechanical position-sensing switch, and particularly when platform rises to initial layers print position, trigger certain mechanical switch, then printer starts to print initial layers.Although this method is easy, but also Shortcomings, first the positioning precision of mechanical switch is lower, and the position of mechanical switch not easily adjusts, user is needed to have certain manipulative ability, in addition, what mechanical switch detected is the position of 3D print platform body, instead of the position in its print job face, if the working face of 3D print platform there are the auxiliary material of place mat, such as increase the adhesive tape that 3D prints attachment degree, the detection method of this mechanical switch is just difficult to the height and position determining initial layers exactly.
Utility model content
In order to overcome defect of the prior art, the utility model provides a kind of device of the special height and position for detecting 3D print platform working face.
The utility model is achieved by the following technical solution: a kind of height position detector of 3D print platform working face, comprise the substrate being provided with limited post, described substrate is provided with rotating shaft and photoelectric sensor, described rotating shaft is connected with the cantilever around its axis rotation, the induction end of described cantilever is arranged on the photoelectric area sensor of described photoelectric sensor and can does back and forth movement between the first operating position and the second operating position, the end of probe axle center around the shaft of described cantilever moves up and down, and described substrate is connected with 3D printer.
Further, described limited post is arranged on the centre position of substrate.
Further, described induction end is arranged on below limited post.
Further, the side of described substrate is provided with the mounting groove be connected with 3D printer.
Further, described photoelectric sensor is optoelectronic switch.
Further, the rotating shaft between described substrate and cantilever is provided with spring.
Further, described induction end is light tight baffle plate.
Compared with prior art, superior effect is: the utility model detects the position of 3D print platform working face by custom-designed cantilever, and adopts the error of inserting and dividing the method detected to offset photoelectric sensor, realizes precisely reliable position and detects.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of the height position detector of 3D print platform working face described in the utility model;
Fig. 2 is the first operating position schematic diagram of the height position detector of 3D print platform working face described in the utility model;
Fig. 3 is the second operating position schematic diagram of the height position detector of 3D print platform working face described in the utility model;
Fig. 4 is the height position detector using state schematic diagram of 3D print platform working face described in the utility model.
Reference numeral is as follows:
1-photoelectric sensor, 2-cantilever, 3-substrate, 4-rotating shaft, 5-spring, 6-limited post, 7-end of probe, 8-induction end, 9-working face, the installed surface of 10-3D printer, 11-induction zone, 12-mounting groove, 13-first operating position, 14-second operating position.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model detailed description of the invention is described in further detail.
Embodiment 1
As shown in Fig. 1 to 2, illustrate the height position detector of a kind of 3D print platform working face that the utility model provides, comprise the substrate 3 that centre position is provided with limited post 6, described substrate 3 is provided with rotating shaft 4 and photoelectric sensor 1, described rotating shaft 4 is connected with the cantilever 2 around its axis rotation, the induction end 8 of described cantilever 2 is arranged on the photoelectric area sensor 11 of described photoelectric sensor 1 and can does back and forth movement between the first operating position 13 and the second operating position 14, described induction end 8 is arranged on below limited post 6, the end of probe 7 of described cantilever 2 around the shaft 4 axle center move up and down, a side of described substrate 3 is provided with the mounting groove 12 be connected with 3D printer, described photoelectric sensor 1 preferred light electric switch, the optoelectronic switch of Omron EE-SX472 model selected by optoelectronic switch in the present embodiment, rotating shaft 4 between described substrate 3 and cantilever 2 is provided with spring 5, in order to make end of probe 7 can with working face 9 reliable contacts of platform, spring 5 makes cantilever 2 have certain operating pressure when contacting with the working face 9 of 3D print platform, this pressure is set in the scope of 50 grams to 200 grams usually.Described induction end 8 is light tight baffle plate, preferred corrosion resistant plate, and described rotating shaft 4 is provided with dual bearing structure, and described dual bearing structure comprises the clutch shaft bearing be arranged on cantilever 2 and the second bearing (not shown) arranged on the substrate 3.As shown in Figure 4, wherein the end of probe 7 of cantilever 2 contacts with the working face 9 of described 3D print platform, and working face 9 height position detector of described platform is installed on the installed surface 10 of 3D printer by screw (not shown) by the mounting groove 12 on described substrate 3.
The utility model additionally provides a kind of detection method using the height position detector of 3D print platform working face, comprises the following steps:
Step 1) working face 9 of 3D print platform is placed in the position do not contacted with the end of probe 7 of cantilever 2, if the position of the working face 9 of 3D print platform is unknown, it is the maximum space working range being greater than described cantilever 2 by its dropping distance, this decline process makes the working face 9 of described 3D print platform not come in contact with described end of probe 7, as shown in Figure 2, now described induction end 8 is in the first operating position;
Step 2) being risen by the working face 9 of described 3D print platform contacts with described end of probe 7, and the working face 9 of described 3D print platform is continued rise, the induction end 8 of described cantilever 2 is made to enter the induction zone 11 of described photoelectric sensor 1, and trigger described photoelectric sensor 1, height is now h1;
Step 3) described 3D print platform working face 9 continue rise, make the induction end 8 of described cantilever 2 leave the induction zone 11 of described photoelectric sensor 1, and close photoelectric sensor 1, height is now h2; As shown in Figure 3, described induction end 8 is in the second operating position;
Step 4) by the relative altitude h0 of (h1+h2)/2 as the working face 9 of 3D print platform, relative altitude is exactly its absolute altitude position also inaccurate height value, that is the numerical value of this height is only used for representing relative position, the reference altitude hr of this relative altitude and prior calibration record compares, and calibrates the exact height P of the working face 9 of 3D print platform.Such as, recording in the reference altitude position at h0 place by truing tool is in advance hr, be namely hr at h0 place 3D printhead (not shown) to the distance of the working face of 3D print platform, after above-mentioned calibration steps completes, the relative altitude that the working face of 3D print platform is in is designated as h3, the height of this position is demarcated as again P=hr+ (h0-h3), obtains the working face height value accurately of 3D print platform.
Step 1) to 4) way be to overcome in the present embodiment due to error that photoelectric sensor 1 sensitivity causes.The condition sensing sensitivity in other words of photoelectric sensor 1, by temperature, operating voltage and the aging impact that works, has certain fluctuation.If change of sensitivity ds, correspondence position change dz, then trigger absolute fix h1m=h1+dz, closing absolute fix is exactly h2m=h2-dz, average (h1m+h2m)/2=(h1+h2)/2 after cumulative, namely the sensitivity error of absolute fix and photoelectric sensor 1 has nothing to do.
Described spatial operation range refers to that cantilever 2 is in order to detect the height and position of the working face 9 of 3D print platform, need the distance sensing scope of rotating, and start 3D printing, the rotation surplus distance range that described cantilever 2 should possess to make the working face 9 of 3D print platform freely rise.As shown in Figures 2 and 3, when the working face 9 of 3D print platform does not contact with cantilever 2, described position of platform checkout gear is in idle condition, and the position of described cantilever 2 is limited by described limited post 6, and described sensor ends 8 is in the first operating position 13; When described working face 9 rising contacts rising with the induction end 7 of cantilever 2, described end of probe 7 is raised by working face 9, described induction end 8 declines and arrives the second operating position 14 by the photoelectric area sensor 11 of photoelectric sensor 1.This minimum rotation scope making induction end 8 position turn to described second operating position 14 by the first operating position 13 is exactly described distance of reaction scope; and the spatial operation range of reality usually can be larger than described distance sensing scope; because after the height and position of working face 9 is detected; the operating position that working face 9 also will continue rising arrival initial layers starts 3D printing; so certain working range surplus also will be added, i.e. surplus distance range.The induction end 8 of cantilever 2 is wanted to be detected by photoelectric sensor 1, although can use high-precision grating or reflective sensor ends, consider cost and reliability, usual cantilever 2 is light tight baffle plate, preferred stainless steel baffle plate.The effect of actual cantilever mounted 2 is played in rotating shaft 4 on cantilever 2, allows cantilever 2 to rotate simultaneously.The position consistency that when gap reducing cantilever 2 and rotating shaft 4 can make the height and position in each testing face 9, cantilever 2 rotates, thus the precision improving that cantilever 2 detects.Common way adopts double-row bearing System's composition cantilever 2 and rotating shaft 4, and suitably pretension makes cantilever 2 freely to rotate and cantilever 2 and rotating shaft 4 do not exist remarkable gap.Such as, being first fixed on cantilever 2 by a screw, then through clutch shaft bearing, then through substrate 3, then the second bearing, is then clamp nut.Substrate 3 clamps by clutch shaft bearing and the second bearing, plays the installation effect of cantilever 2 to substrate 3.Described cantilever 2 can be made freely to rotate for adjustment clamp nut and described cantilever 2 and rotating shaft 4 do not exist remarkable gap.So-called significantly gap refers to the gap of influential system precision.If certain gap is far smaller than the accuracy of detection of system, then this gap is not remarkable gap, and its impact can be ignored.
Embodiment 2
On the basis of embodiment 1, the utility model additionally provides a kind of detection method using the height position detector of 3D print platform working face, is: step 2 wherein with the difference of embodiment 1) can also under type be taked, other steps are identical.Described step 2) contact with the end of probe 7 of cantilever 2 for the working face 9 of described 3D print platform is risen to, and the working face 9 of described 3D print platform is continued rise, the induction end 8 of cantilever 2 is made to enter the induction zone 11 of photoelectric sensor 1, and trigger photoelectric sensor 1, then the working face 9 of 3D print platform changes direction by rising is decline, and close electric inductor 1, height is now h1, then 3D print platform 9 changes direction by decline is rising, the induction end 8 of cantilever 2 is made to enter the induction zone 11 of photoelectric sensor 1, and trigger photoelectric sensor 1, so again entering induction zone and triggering described photoelectric sensor 1 makes follow-up testing process can carry out according to the subsequent step of embodiment 1.
The method that the present embodiment provides overcomes the error that photoelectric sensor 1 brings because of the hysteresis loop that state changes.If the error that hysteresis loop causes is dh, the method provided according to embodiment 1, photoelectric sensor 1 becomes h1m=h1+dz+dh when triggering state, i.e. state delay dh change; H2m=h2-dz+dh when in like manner switch becomes cut out, same because the delay dh that hysteresis causes changes.So average (h1m+h2m)/2=(h1+h2)/2+dh after cumulative, namely hysteresis error can cause metrical error.During the method adopting the present embodiment to provide, measure when h1m is declined by platform, photoelectric sensor 1 becomes closed condition from trigger state simultaneously, so h1m=h1-dz-dh, relative altitude after such calculating is (h1m+h2m)/2=(h1+h2)/2 still, and measurement is accurately.
In above embodiment, described triggering can be that switching value triggers, also can be that simulation triggers, the signal that namely photoelectric sensor 1 exports is analog signal, after analog-to-digital conversion, obtain sample magnitude, and with the numeric ratio pair of programming in advance, determine the state of photoelectric sensor 1, like this can the sensitivity of program control photoelectric sensor 1, improve flexibility.
The utility model is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present utility model, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into protection domain of the present utility model.
Claims (8)
1. the height position detector of a 3D print platform working face, it is characterized in that, described checkout gear comprises the substrate (3) being provided with limited post (6), described substrate (3) is provided with rotating shaft (4) and photoelectric sensor (1), described rotating shaft (4) is connected with the cantilever (2) around its axis rotation, the induction end (8) of described cantilever (2) is arranged on the photoelectric area sensor (11) of described photoelectric sensor (1) and can does back and forth movement between the first operating position (13) and the second operating position (14), the axle center of the end of probe (7) of described cantilever (2) (4) around the shaft moves up and down, described substrate (3) is connected with 3D printer.
2. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, described limited post (6) is arranged on the centre position of substrate (3).
3. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, described induction end (8) is arranged on below limited post (6).
4. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, the side of described substrate (3) is provided with the mounting groove (12) be connected with 3D printer.
5. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, described photoelectric sensor (1) is optoelectronic switch.
6. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, the rotating shaft (4) between described substrate (3) and cantilever (2) is provided with spring (5).
7. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, described induction end (8) is light tight baffle plate.
8. the height position detector of 3D print platform working face according to claim 1, it is characterized in that, described rotating shaft (4) is provided with dual bearing structure, and described dual bearing structure comprises the clutch shaft bearing be arranged on cantilever (2) and the second bearing be arranged on substrate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547649.5U CN204749299U (en) | 2015-07-27 | 2015-07-27 | High position detecting device of 3D print platform working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547649.5U CN204749299U (en) | 2015-07-27 | 2015-07-27 | High position detecting device of 3D print platform working face |
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| Publication Number | Publication Date |
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| CN204749299U true CN204749299U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520547649.5U Withdrawn - After Issue CN204749299U (en) | 2015-07-27 | 2015-07-27 | High position detecting device of 3D print platform working face |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105058787A (en) * | 2015-07-27 | 2015-11-18 | 厦门达天电子科技有限公司 | Device and method for detecting height position of working face of 3D printing platform |
| CN110139757A (en) * | 2016-09-16 | 2019-08-16 | 添加剂工业有限公司 | For manufacturing the equipment of next life product body by adding type and using the method for the equipment |
| CN110696352A (en) * | 2019-08-30 | 2020-01-17 | 南京航空航天大学 | Method for measuring rotating shaft of five-axis FDM three-dimensional printer turntable based on standard component |
-
2015
- 2015-07-27 CN CN201520547649.5U patent/CN204749299U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105058787A (en) * | 2015-07-27 | 2015-11-18 | 厦门达天电子科技有限公司 | Device and method for detecting height position of working face of 3D printing platform |
| CN105058787B (en) * | 2015-07-27 | 2018-03-23 | 厦门达天电子科技有限公司 | A kind of height position detector and its detection method in 3D printing working platform face |
| CN110139757A (en) * | 2016-09-16 | 2019-08-16 | 添加剂工业有限公司 | For manufacturing the equipment of next life product body by adding type and using the method for the equipment |
| CN110696352A (en) * | 2019-08-30 | 2020-01-17 | 南京航空航天大学 | Method for measuring rotating shaft of five-axis FDM three-dimensional printer turntable based on standard component |
| CN110696352B (en) * | 2019-08-30 | 2021-09-17 | 南京航空航天大学 | Method for measuring rotating shaft of five-axis FDM three-dimensional printer turntable based on standard component |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20180323 |