阅读说明：本技术 一种双向往复切换刀具用校准仪 (Bidirectional reciprocating switching calibrator for cutter ) 是由 黄石伟 陈�光 于 2021-07-29 设计创作，主要内容包括：本发明提供一种双向往复切换刀具用校准仪,包括：安装架、两个测针以及用于按压两个测针至基准位的刀口尺；两个测针均与位移传感器连接,且两个测针分别设置在安装架的两侧,当刀片按压两个测针时使两个测针可于安装架上移动。本发明实现刀片的高精度定量调节,经过本发明校准仪调校后的刮料装置,工作时不仅能保持单一刀片与工作台平行,而且两侧刀片等高,因此刮料装置交替工作时可保证打印原料均匀平铺在工作台上,进而实现高精度打印,且本发明提供的校准仪操作方式简单,提升了校准流程的操作效率。(The invention provides a two-way reciprocating switching tool calibrator, which comprises: the measuring device comprises a mounting frame, two measuring pins and a knife edge ruler used for pressing the two measuring pins to a reference position; two survey needles all are connected with displacement sensor, and two survey needles set up respectively in the both sides of mounting bracket, make two survey needles can remove on the mounting bracket when two survey needles are pressed to the blade. According to the calibrating device, the blades are quantitatively adjusted in a high-precision manner, and the scraping devices calibrated by the calibrating device can keep a single blade parallel to the workbench when working, and the blades on two sides are equal in height, so that the scraping devices can ensure that printing raw materials are uniformly paved on the workbench when working alternately, and further high-precision printing is realized.)

1. The utility model provides a two-way reciprocal calibrator for switching tool which characterized in that includes: the measuring device comprises a mounting frame, two measuring pins and a knife edge ruler used for pressing the two measuring pins to a reference position; the two measuring pins are connected with the displacement sensor and are arranged on two sides of the mounting frame respectively, and the two measuring pins can move on the mounting frame when the blade presses the two measuring pins.

2. The calibrator for the bidirectional reciprocating switching tool according to claim 1, wherein the two measuring pins are arranged on two sides of the mounting frame through guide mechanisms;

the guide mechanism includes: the measuring probe comprises a guide post and a return spring, wherein a post groove is formed in the guide post, the bottom of the measuring probe is located in the post groove, and the return spring is located at the bottom of the post groove.

3. The calibrator for the bidirectional reciprocating switch tool according to claim 2, wherein the mounting frame comprises: the device comprises a base, a section rod and a meter frame; the section rod is arranged on the base, the meter frame is arranged at the top end of the section rod, and the two measuring pins are arranged at two ends of the meter frame respectively.

4. The calibrator for the bidirectional reciprocating switching tool according to claim 3, further comprising: and the digital display meter is used for displaying the measured value of the displacement sensor.

5. The calibrator for the bidirectional reciprocating cutter according to claim 4, wherein the two ends of the gauge stand are provided with grooves, the groove walls of the grooves are provided with threaded handles, and the guide mechanism is clamped in the grooves.

6. The calibrator for the bidirectional reciprocating cutter according to claim 5, wherein an anchor ear is disposed at a middle portion of the meter rack, and the meter rack is fixed to the top end of the link rod through the anchor ear.

7. The calibrator for the bidirectional reciprocating switch tool according to claim 6, wherein a circular receiving plate is provided at a tip of the stylus.

Technical Field

The invention belongs to the technical field of 3D printer calibration equipment, and particularly relates to a calibrator for a bidirectional reciprocating cutter switching tool.

Background

A material scraping device is often used for a full-automatic Stereolithography (SLA) laser 3D printer and a Digital Light Processing (DLP) laser 3D printer, and after each layer of the 3D printer is cured, the material scraping device is operated to uniformly coat raw materials on a workbench to add a new layer of raw materials.

At present, some scraping devices select a bidirectional reciprocating switching type cutter assembly, and are characterized in that blades are arranged on the left side and the right side. Generally, the printing workbench is located in the middle, the feeding device is located on two sides of the workbench, the scraper frame in the scraping device drives the blade to swing back and forth above the workbench to respectively bring slurry on two sides into the printing workbench, and the blade is automatically switched when the cutter assembly moves to two sides of the workbench, so that automatic feeding of the cutter is realized, and feeding efficiency and scraping precision are improved. However, since the printed matter is of a multilayer structure and each layer needs to be equal in thickness, the heights of the scrapers on the two sides of the scraping device are required to be parallel to and equal to the height of the workbench, so that the slurry spread by the scrapers can be equal in thickness, and therefore the calibration of the scraping device is important.

Generally, the existing adjusting mode takes a printing workbench or a reference table surface of equipment around the printing workbench as a reference, a feeler gauge, an equal-height block and the like are used between a left scraper and a right scraper and the printing workbench, when the height of a blade is adjusted, the blade is pre-pressed by hand feel, and an obvious height difference exists actually, so that the result is that the tool points at two ends of the same blade are not equal in height to the workbench, and the blade is not parallel to the workbench surface; secondly, the blades on the two sides of the scraping device are not equal in height; third, the quantitative adjustment can not be controlled by micron-scale precision, so that the existing adjustment mode has the technical problems of large error and low efficiency, and further the printing precision of the 3D printer is influenced.

Disclosure of Invention

In order to solve the technical problem, the invention provides a calibrator for bidirectional reciprocating switching of a cutter. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

The invention adopts the following technical scheme:

in some alternative embodiments, there is provided a calibrator for a bidirectional reciprocating cutter comprising: the measuring device comprises a mounting frame, two measuring pins and a knife edge ruler used for pressing the two measuring pins to a reference position; the two measuring pins are connected with the displacement sensor and are arranged on two sides of the mounting frame respectively, and the two measuring pins can move on the mounting frame when the blade presses the two measuring pins.

Furthermore, the two measuring pins are arranged on two sides of the mounting rack through guide mechanisms; the guide mechanism includes: the measuring probe comprises a guide post and a return spring, wherein a post groove is formed in the guide post, the bottom of the measuring probe is located in the post groove, and the return spring is located at the bottom of the post groove.

Further, the mounting bracket includes: the device comprises a base, a section rod and a meter frame; the section rod is arranged on the base, the meter frame is arranged at the top end of the section rod, and the two measuring pins are arranged at two ends of the meter frame respectively.

Further, the calibrator for the bidirectional reciprocating switching tool further comprises: and the digital display meter is used for displaying the measured value of the displacement sensor.

Furthermore, the two ends of the gauge stand are provided with channels, the wall of each channel is provided with a threaded handle, and the guide mechanism is clamped in the channel.

Furthermore, the middle part of the meter frame is provided with a hoop, and the meter frame is fixed at the top end of the section rod through the hoop.

Further, a circular bearing sheet is arranged at the top end of the measuring needle.

The invention has the following beneficial effects: according to the calibrating device, the blades are quantitatively adjusted in a high-precision manner, and the scraping devices calibrated by the calibrating device can keep a single blade parallel to the workbench when working, and the blades on two sides are equal in height, so that the scraping devices can ensure that printing raw materials are uniformly paved on the workbench when working alternately, and further high-precision printing is realized.

Drawings

FIG. 1 is a schematic structural diagram of a calibrator for bidirectional reciprocating cutter switching according to the present invention;

FIG. 2 is a perspective view of a calibrator for bi-directional reciprocating cutter according to the present invention;

FIG. 3 is a schematic view of the structure of the guide mechanism of the present invention;

FIG. 4 is a schematic view of a calibration instrument for a bidirectional reciprocating cutter of the present invention in use;

FIG. 5 is a schematic view of a calibration instrument for a two-way reciprocating switch tool and a measurement position of the two-way reciprocating switch tool according to the present invention;

FIG. 6 is a schematic view of the measurement of the calibrator for the bidirectional reciprocating cutter according to the present invention.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others.

3D prints raw and other materials and supplies through special feed unit, piles up at the feed outlet department, takes raw and other materials to sweep over 3D and prints the workstation when the scraper removes, leaves specific clearance between scraper edge of a knife and the workstation, and the clearance will be filled when raw and other materials pass through to print the workstation to reach the purpose of replenishing the raw and other materials. Meanwhile, after the blade with the raw material completely penetrates through the area of the workbench, the blade is made to realize pendulum through a specific limiting device, namely the blade on the other side falls down, and the original working blade is lifted. The scraper blade is provided with a positioning device, and the position of the blade can be adjusted before the printer works, but the existing scraper calibration mode has the technical problems of large error and low efficiency, so that a calibration instrument for bidirectional reciprocating cutter switching is needed to be designed to solve the problems.

1-6, in some illustrative embodiments, the present invention provides a calibrator for bi-directional reciprocating switching tools, comprising: the device comprises a mounting rack 1, a displacement sensor 2, a measuring needle 3, a knife edge ruler 4 and a digital display meter 5.

The measuring needles 3 are two, the two measuring needles 3 are respectively arranged on two sides of the mounting frame 1, and the two measuring needles 3 can move on the mounting frame 1 when being pressed, namely, the two measuring needles 3 can move on the mounting frame 1 when the blade presses the two measuring needles 3 during measurement.

The number of the displacement sensors 2 is two corresponding to the two measuring pins 3, the movable electric brush of the displacement sensor 2 is connected with a measured object, namely the measuring pin 3, and the two displacement sensors 2 respectively measure the moving distance values of the two measuring pins 3. The displacement sensor 2 adopts a sensor with the resolution ratio of more than 0.001mm, the digital display meter 5 is used for displaying the measurement value of the displacement sensor 2, the digital display meter 5 can set a zero point position at any point in the allowable range of the displacement sensor 2, and the point is used as a reference to realize the absolute value measurement of the vertical displacement.

The knife edge ruler 4 is used for pressing the two measuring pins 3 to a reference position. As shown in fig. 4, when the calibrator of the present invention is used, the calibrator is first placed on the printing platform 6, the printing platform 6 is controlled to move down, and the two measuring pins 3 on the calibrator are kept slightly higher than the reference table 7 of the printing apparatus. And then, a knife edge ruler 4 is used for being placed on a reference table top 7 and pressing the two measuring pins 3, at the moment, the two measuring pins 3 reach the reference position, the two digital display meters 5 press down the zero positions, at the moment, the zero positions of the two displacement sensors 2 are coplanar with the reference table top 7, and the zero calibration operation before calibration is completed.

As shown in fig. 3, two measuring pins 3 are provided on both sides of the mounting frame 1 through a guide mechanism. The guide mechanism includes: the measuring probe comprises a guide post 8 and a return spring 9, wherein a post groove is formed in the guide post 8, and the bottom of the measuring probe 3 is positioned in the post groove, so that the measuring probe 3 can move along the guide post 8 in the post groove. The reset spring 9 is positioned at the bottom of the column groove, when the blade presses down the two measuring pins 3, the measuring pins 3 move along the column groove formed on the guide column 8, the reset spring 9 is compressed, and the position difference generated when the measuring pins 3 move is a data value and is displayed on the digital display 5. When the blade is moved away, the return spring 9 pushes the measuring pin 3 to move upwards to return the same, so that the next blade measurement is facilitated, and the device has the advantage of simple and stable structure.

As shown in fig. 5 and 6, in specific operation, the knife edge ruler 4 is removed, the scraper device is calibrated, the blade 101 on one side of the bidirectional reciprocating switching tool 10 is slightly pressed on the two measuring pins 3, the height of the blade is adjusted through an adjusting device arranged on the scraper device, meanwhile, the height difference of the reference zero position of the calibrator is adjusted according to the printing thickness requirement, and the display values of the two digital display meters 5 are consistent, wherein the height difference and the scraping thickness have a corresponding relationship. After the adjustment is completed, the blades are screwed tightly to fix the blades, so that the blade on one side of the bidirectional reciprocating switching tool is calibrated, the blade on the other side of the bidirectional reciprocating switching tool is adjusted simultaneously according to the method, the actions are repeated, the two blades can be guaranteed to be equal in height when in work, and the effective guarantee is provided for the working precision of 3D printing.

The mounting bracket 1 includes: a base 102, a lever 103, and a watch frame 104. The section rod 103 is arranged on the base 102, the meter frame 104 is arranged at the top end of the section rod 103, the two measuring pins 3 are respectively arranged at two ends of the meter frame 104, the two measuring pins 3 are separated by a certain distance, so that the blade can be calibrated, the mounting frame 1 has the advantage of stable structure, and a stable basic environment is provided for measurement.

The two ends of the watch frame 104 are provided with the channel 105, the groove wall of the channel 105 is provided with the threaded handle 106, and the distance between the two groove walls of the channel 105 is shortened when the threaded handle 106 is screwed, so that the guide mechanism is clamped in the channel 105, and the watch frame is simple in installation mode and stable and reliable in structure. Preferably, the hoop 107 is arranged in the middle of the watch frame 104, and the hoop 107 is fixed at the top end of the rod segment 103 through a bolt, so that the watch frame 104 is fixed at the top end of the rod segment through the hoop 107, and is firm and not easy to incline to cause errors.

The tip of the stylus 3 is provided with a circular receiving tab 301 to increase the area of the tip of the stylus 3 to facilitate contact with the blade.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.