Scraper, scraping mechanism and light-curing ceramic 3D printer

Abstract

The present invention relates to a scraper, a scraper mechanism and a light-curing ceramic 3D printer, comprising a transmission mechanism and a scraper assembly, the scraper assembly comprising a scraper interlocking rod, a paving plate, a limiting guide rod and a scraper bracket, the paving plate comprising a first paving plate and a second paving plate, the transmission mechanism being connected to the top end of the scraper interlocking rod, the bottom end of the scraper interlocking rod being connected to one end of the limiting guide rod, the other end of the limiting guide rod being connected to the scraper bracket and connected to the paving plate, the reciprocating movement of the transmission mechanism drives the scraper interlocking rod to move, thereby adjusting the direction of the paving plate, the transmission mechanism drives the scraper bracket, so that the scraper assembly reciprocates to realize the paving process.

Description

Technical Field

[0001] The present invention relates to a material spreading device, in particular to a scraper, a material scraping mechanism and a light-curing ceramic 3D printer. Background Art

[0002] Currently, the existing scraper is just a simple plate-shaped scraper. The scraper itself does not have much technical content and does not have functions such as flipping, adjusting direction, and changing the scraping thickness. If the above functions are to be completed, the ordinary scraper needs to be driven by a specific mechanism. This undoubtedly increases the complexity of the mechanism, increases the difficulty of operation for workers, and increases the cost of laying and scraping materials. At the same time, the power required to drive multiple mechanisms to work together is often more than the power required to drive a single scraper.

[0003] Stereolithography uses a high-resolution digital light processor to solidify liquid photopolymers layer by layer. After solidification in the XY directions, the 3D printed ceramic part is stacked layer by layer by moving the lifting platform in the Z-axis. Because ceramic 3D printers use high-solids paste-like ceramic slurry, which exhibits high viscosity and poor fluidity, a scraper is required to spread the incoming slurry, applying it layer by layer onto the print plate for the printer to print and ultimately complete the print.

[0004] Although the scraper currently installed on the light-curing ceramic 3D printer can achieve the scraping process, there are also problems such as the inconvenience of adjusting the scraping thickness and slurry waste during the process. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a scraper, a scraping mechanism and a light-curing ceramic 3D printer.

[0006] According to one aspect of the present invention, a scraper is provided, comprising: a limiting guide rod, one end of the limiting guide rod is a fixed end, and the other end is a free end, the fixed end of the limiting guide rod is connected to a paving plate, the moving direction of the paving plate when scraping is a first direction, and the opposite direction of the moving direction is a second direction; the fixed end of the limiting guide rod is provided with a limiting device, the free end of the limiting guide rod rotates with the fixed end as the center, the paving plate approaches or moves away from the limiting device as the limiting guide rod rotates, and the paving plate is in the scraping position when it contacts the limiting device.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] The paving plate is connected to the fixed end of the limiting guide rod. The rotation of the free end of the limiting guide rod can drive the paving plate to flip over, thereby realizing the flipping of the scraper. The existence of the limiting device prevents the paving plate from continuing to rotate when it reaches the limit position, thereby ensuring the certainty of the thickness range.

[0009] Furthermore, when the free end of the limiting guide rod rotates in a first direction, there is a first scraping position, and when the free end of the limiting guide rod rotates in a second direction, there is a second scraping position;

[0010] When the free end of the limiting guide rod rotates to the first scraping position, the paving plate rotates in the second direction under the action of its own gravity until it contacts the limiting device;

[0011] When the free end of the limiting guide rod rotates to the second scraping position, the limiting device drives the paving plate to rotate in the first direction.

[0012] The beneficial effect of adopting the above further solution is that the free end of the limiting guide rod has a rotation range. The free end of the limiting guide rod falls down on the paving plate to scrape the material at the first scraping position, and the free end of the limiting guide rod lifts up on the paving plate to collect the slurry at the second scraping position.

[0013] According to another aspect of the present invention, there is provided a scraping mechanism comprising:

[0014] A scraper as described in any one of the above;

[0015] The scraper support is provided with a transmission mechanism, and the transmission mechanism moves back and forth along a first direction and a second direction on the scraper support.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The transmission mechanism drives the scraper bracket, and the scraper bracket drives the scraper to move back and forth left and right on the scraping platform.

[0018] Furthermore, a scraper interlocking rod is connected to the transmission mechanism and moves back and forth.

[0019] The beneficial effect of adopting the above-mentioned further technical solution is that: the transmission mechanism drives the scraper interlocking rod to move left and right, and the scraper interlocking rod drives the limiting guide rod to rotate back and forth, thereby realizing the process of the two paving plates scraping and collecting materials alternately during the reciprocating movement of the scraper bracket.

[0020] Furthermore, one side of the fixed end of the limiting guide rod is connected to the scraper bracket, and the other side of the fixed end is connected to the paving plate. The scraper bracket reciprocates on the scraping platform to drive the paving plate to scrape the material on the scraping platform.

[0021] Furthermore, the paving plate includes a first paving plate and a second paving plate, and the first direction end portion and the second direction end portion of the scraper interlocking rod are each connected to a limiting guide rod.

[0022] The beneficial effect of adopting the above-mentioned further technical solution is that: the scraper interlocking rod moves back and forth, driving the free ends of the two limiting guide rods to rotate back and forth. When the first paving plate is lifted up to collect the slurry between the two scrapers, the second paving plate falls back downward to scrape the material. When the second paving plate is lifted up to collect the slurry between the two scrapers, the first paving plate falls back downward to scrape the material.

[0023] Furthermore, the scraper interlocking rod is in an inverted "T" shape, with a long slot in the middle of the vertical rod. The transmission mechanism passes through the long slot of the scraper interlocking rod. The long slot can play a buffering role, thereby increasing the stability of the scraping mechanism.

[0024] Furthermore, the transmission mechanism includes a slider, a connecting rod and a pin;

[0025] A connecting rod is provided on the slider, and the connecting rod passes through the long slot of the scraper interlocking rod;

[0026] The pin shaft passes through the scraper bracket and the sliding block.

[0027] The beneficial effect of adopting the above further solution is that the connecting rod passes through the long slot to drive the scraper interlocking rod to move back and forth, and the slider moves back and forth on the scraper bracket along the pin shaft, thereby increasing the stability of the transmission mechanism movement.

[0028] Furthermore, the scraper bracket is provided with a first adjusting screw and a second adjusting screw relative to each other, and the moving range of the slider on the scraper bracket is limited by rotating the two screws.

[0029] According to another aspect of the present invention, a photocurable ceramic 3D printer is provided, comprising any one of the above-mentioned scraping mechanisms. The scraper and the scraper mechanism of the present invention can be applied to the photocurable ceramic 3D printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The limiting guide rod structure of the present invention Figure 1 .

[0031] Figure 2 The limiting guide rod structure of the present invention Figure 2 .

[0032] Figure 3 The scraper structure of the present invention Figure 1 .

[0033] Figure 4 The scraper structure of the present invention Figure 2 .

[0034] Figure 5 Reference for the usage status of the present invention Figure 1 .

[0035] Figure 6 Reference for the usage status of the present invention Figure 2 .

[0036] Markings shown in the accompanying drawings: 1. Limit guide rod; 21. First paving plate; 22. Second paving plate; 3. Scraper interlocking rod; 4. Scraper bracket; 5. Pin; 6. First adjusting screw; 7. Second adjusting screw; 9. Slider; 10. Limit baffle; 13. Connecting rod; 14. Limit screw. DETAILED DESCRIPTION

[0037] In order to better understand the technical solution of the present invention, the present invention will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0038] Example 1:

[0039] like Figure 3-4 As shown, this embodiment provides a scraper, comprising: a limiting guide rod 1, one end of the limiting guide rod 1 is a fixed end, and the other end is a free end, the fixed end of the limiting guide rod 1 is connected to a paving plate, the fixed end of the limiting guide rod 1 is connected to the paving plate by a screw, and the moving direction of the paving plate when scraping is a first direction, and the fixed end of the limiting guide rod is provided with a limiting device, and the free end of the limiting guide rod rotates around the fixed end, and the paving plate approaches or moves away from the limiting device as the limiting guide rod rotates. When the paving plate contacts the limiting device, it is the scraping position of the paving plate, and the rotation of the free end of the limiting guide rod 1 can drive the paving plate to flip, thereby realizing the flipping of the scraper. The existence of the limiting device prevents the paving plate from continuing to rotate when it reaches the limit position, thereby ensuring the certainty of the thickness range. Specifically, as Figure 1-2As shown, as a specific limit device, the limit device can be a limit baffle 10 or a limit screw 14. Preferably, the limit device is a limit screw 14, and a circle of screw grooves is opened on the limit guide rod 1, and the position of the limit screw 14 can be adjusted as needed, so that the limit device is convenient and flexible to adjust; when the free end of the limit guide rod 1 rotates in the first direction, there is a first scraping position, and when the free end of the limit guide rod 1 rotates in the second direction, there is a second scraping position. When the free end of the limit guide rod 1 rotates to the first scraping position, the paving plate rotates in the second direction under the action of its own gravity until it contacts the limit device. When the free end of the limit guide rod 1 rotates to the second scraping position, the limit device drives the paving plate to rotate in the first direction, and the free end of the limit guide rod 1 has a rotation range. When the free end of the limit guide rod 1 is in the first scraping position, the paving plate falls back downward to scrape the material. When the free end of the limit guide rod 1 is in the second scraping position, the paving plate is lifted up to collect the slurry.

[0040] The scraper has a simple structure, is easy to manufacture, and can be applied to a scraping mechanism.

[0041] like Figure 5-6As shown, this embodiment also provides a scraping mechanism using the above-mentioned scraper, including: the scraper described in any one of the above items; a scraper bracket 4, a transmission mechanism is provided on the scraper bracket 4, and the transmission mechanism reciprocates along the first direction and the second direction on the scraper bracket 4, and the transmission mechanism drives the scraper bracket 4, and the scraper bracket 4 drives the scraper to move back and forth left and right on the scraper platform; a scraper interlocking rod 3, the scraper interlocking rod 3 is connected to the transmission mechanism, and one side of the fixed end of the limiting guide rod 1 is connected to the scraper bracket 4, which increases the stability of the scraper, and the other side of the fixed end is connected to a paving plate, and at the same time, the scraper bracket 4 reciprocates on the scraper platform, driving the paving plate to scrape material on the scraper platform. The paving plate includes a first paving plate 21 and a second paving plate 22, and each end of the scraper interlocking rod 3 is connected to a limit guide rod 1, and the scraper interlocking rod 3 is connected to the limit guide rod 1 by a pin, and the two limit guide rods 1 are located in the same horizontal plane and are symmetrical about the scraper interlocking rod 3. The scraper interlocking rod 3 moves back and forth, driving the free ends of the two limit guide rods 1 to rotate back and forth. When the first paving plate 21 is lifted up to collect the slurry between the two scrapers, the second paving plate 22 falls back downward to scrape the material; when the second paving plate 22 is lifted up to collect the slurry between the two scrapers, the first paving plate 21 falls back downward to scrape the material. Preferably, the scraper interlocking rod 3 is in an inverted "T" shape, with a long slot in the middle of the vertical rod, and the transmission The mechanism includes a slider 9, a connecting rod 13 and a pin 5. The connecting rod 13 passes through the long slot of the scraper interlocking rod 3. The connecting rod 13 can move up and down in the long slot. The long slot can play a buffering role, which increases the stability of the scraper mechanism. The pin 5 passes through the scraper bracket 4 and the slider 9. The slider 9 moves along the pin 5 during the movement, which increases the stability of the transmission mechanism during the movement. Preferably, the scraper bracket 4 is U-shaped with a groove in the middle. The slider 9 is in the groove, and the slider 9 can move left and right in the groove of the scraper bracket 4; adjusting screws, the scraper bracket 4 is relatively provided with a first adjusting screw 6 and a second adjusting screw 7 at both ends. Specifically, the adjusting screw is rotated When the adjusting screw is unscrewed, the distance between the two adjusting screws increases, the moving range of the slider 9 increases, and the reciprocating range of the scraper interlocking rod 3 increases, so that the first scraping position of the limiting guide rod 1 is relatively close to the second scraping position, and finally the scraping position of the paving plate is raised, the distance between the paving plate and the scraping platform becomes larger, and the scraping thickness increases. The adjusting screw is unscrewed, the distance between the two adjusting screws increases, the moving range of the slider 9 increases, and the reciprocating range of the scraper interlocking rod 3 increases, so that the first scraping position of the limiting guide rod 1 is relatively far away from the second scraping position, and finally the scraping position of the paving plate is lowered, the distance between the paving plate and the scraping platform becomes smaller, and the scraping thickness decreases.

[0042] The scraper mechanism of the present invention has an ingenious structural design and uses a simple multi-rod linkage to achieve flexible control of the scraping thickness. At the same time, since double scrapers are used for alternating scraping, the slurry between the two scrapers will not overflow during the scraping process and will eventually be scraped onto the scraping platform, solving the problem of slurry waste in the existing scraping mechanism during the scraping process. At the same time, the present invention can not only scrape liquid slurry, but also realize the scraping function for powder.

[0043] This embodiment also provides a light-curing ceramic 3D printer using the above-mentioned scraping mechanism. For printing ceramic blanks, the light-curing ceramic 3D printer using the above-mentioned scraping mechanism can easily realize the scraping process of paste-like ceramic slurry during the scraping process, and the printing thickness of the slurry can be flexibly adjusted. The slurry will not overflow during the printing process, saving costs.

[0044] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention herein is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, the above-mentioned features may have similar functions to (but not limited to) those disclosed in this application.

Claims

1. A scraping mechanism, characterized in that: include: The limiting guide rod has one end as a fixed end and the other end as a free end. The fixed end of the limiting guide rod is connected to a paving plate, the moving direction of the paving plate when scraping the material is a first direction, and the opposite direction of the moving direction is a second direction; The fixed end of the limiting guide rod is provided with a limiting device, and the free end of the limiting guide rod rotates around the fixed end, and the paving plate approaches or moves away from the limiting device as the limiting guide rod rotates. When the paving plate contacts the limiting device, it is in the scraping position of the paving plate; The scraper bracket is provided with a transmission mechanism, and the transmission mechanism reciprocates along the first direction and the second direction on the scraper bracket; It also includes: a scraper interlocking rod, the scraper interlocking rod is connected to the transmission mechanism and moves back and forth; One side of the fixed end of the limiting guide rod is connected to the scraper bracket, and the other side of the fixed end is connected to the paving plate; The paving board includes a first paving board and a second paving board; The scraper interlocking rod has a limiting guide rod connected to the first direction end and the second direction end respectively; The scraper interlocking rod is in an inverted "T" shape, with a long slot in the middle of the vertical rod, and the transmission mechanism passes through the long slot.

2. A scraping mechanism according to claim 1, characterized in that: When the free end of the limiting guide rod rotates in a first direction, there is a first scraping position; when the free end of the limiting guide rod rotates in a second direction, there is a second scraping position; When the free end of the limiting guide rod rotates to the first scraping position, the paving plate rotating in a second direction under the action of gravity until contacting the limiting device; When the free end of the limiting guide rod rotates to the second scraping position, the limiting device drives The paving plate rotates in a first direction.

3. A scraping mechanism according to claim 1, characterized in that: Also includes: The transmission mechanism includes a slider, a connecting rod and a pin; A connecting rod is provided on the slider, and the connecting rod passes through the long slot of the scraper interlocking rod; The pin shaft passes through the scraper bracket and the sliding block.

4. A scraping mechanism according to claim 1, characterized in that: Also includes: Adjusting screws: a first adjusting screw and a second adjusting screw are arranged opposite to each other at both ends of the scraper bracket.

5. A light-curing ceramic 3D printer, characterized in that: Including claims 1-4 Any scraping mechanism described.

Images