CN212472412U - Scraper adsorption equipment constructs and photocuring 3D printing apparatus - Google Patents
Scraper adsorption equipment constructs and photocuring 3D printing apparatus Download PDFInfo
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- CN212472412U CN212472412U CN202020576567.4U CN202020576567U CN212472412U CN 212472412 U CN212472412 U CN 212472412U CN 202020576567 U CN202020576567 U CN 202020576567U CN 212472412 U CN212472412 U CN 212472412U
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Abstract
The utility model relates to the technical field of 3D printing, and discloses a scraper adsorption mechanism and a photocuring 3D printing device, which comprises a gas storage cavity, a pump mechanism for extracting gas in the gas storage cavity and a controller; the air storage chamber is communicated with one end of an air inlet pipeline with a regulating valve, and the other end of the air inlet pipeline is communicated with the outside air or an air transmission device; the controller is used for controlling the working rotating speed of the pump mechanism; according to the scraper adsorption mechanism, the air storage chamber is communicated with the pump mechanism, negative pressure is formed in the air storage chamber by the aid of the pump mechanism, and further negative pressure is formed in the accommodating groove of the scraper, air bubbles are eliminated by means of negative pressure balance, and accordingly coating smoothness is guaranteed; the adjusting valve arranged on the air inlet pipeline enables the pressure intensity in the air storage chamber to be adjustable, and further enables the adsorption capacity of the scraper to be adjustable; the controller ensures the pressure in the air storage cavity to be stable by adjusting the working rotating speed of the pump mechanism; this adsorption apparatus constructs can realize the automatic stabilization defoaming, has improved printing efficiency.
Description
Technical Field
The utility model relates to a 3D prints technical field, especially relates to a photocuring 3D printing apparatus's scraper adsorption apparatus constructs.
Background
The photocuring 3D printing technology is the earliest practical rapid prototyping technology, adopts liquid photosensitive resin raw materials, designs a three-dimensional solid model through CAD, utilizes a discrete program to slice the model, designs a scanning path, generates data to accurately control the movement of a laser scanner and a lifting platform, irradiates a laser beam on the surface of the liquid photosensitive resin through a scanner controlled by a numerical control device according to the designed scanning path, solidifies a layer of resin in a specific area of the surface, and generates a section of a part after the processing of the layer is finished; and then, the lifting platform descends for a certain distance, another layer of liquid resin is covered on the curing layer, then the second layer of scanning is carried out, and the second curing layer is firmly bonded on the previous curing layer, so that the three-dimensional workpiece prototype is formed by stacking the two layers one by one. The main purpose of the doctor blade is to ensure that a layer of liquid photosensitive resin of uniform thickness is obtained on the upper surface of the cured layer before laser scanning curing.
In the prior art, a doctor blade is generally used to directly coat the liquid photosensitive resin on the grid plate to obtain a layer of liquid photosensitive resin with uniform thickness. However, at present, this method is prone to the phenomenon of generating bubbles on the surface of the liquid photosensitive resin during the coating process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a scraper adsorption equipment constructs, aims at solving prior art, and the phenomenon of scraper liquid photosensitive resin surface gassing in coating process.
The utility model is realized in such a way, and provides a scraper adsorption mechanism, which comprises an air storage cavity used for communicating with the accommodating groove of the scraper, a pump mechanism used for extracting the air in the air storage cavity and a controller; the air storage chamber is communicated with one end of an air inlet pipeline, the other end of the air inlet pipeline is communicated with outside air or an air transmission device, and an adjusting valve for adjusting air inflow is arranged on the air inlet pipeline; the controller comprises a control circuit and a pressure sensor electrically connected with the control circuit, the pressure sensor is used for detecting the pressure in the air storage cavity, the control circuit is electrically connected with the pump mechanism, and the control circuit is used for controlling the working rotating speed of the pump mechanism according to the pressure in the air storage cavity detected by the pressure sensor.
Further, the scraper adsorption mechanism further comprises a first air duct; one end of the first air duct is communicated with the air storage chamber, and the other end of the first air duct is communicated with the accommodating groove of the scraper.
Further, the scraper adsorption mechanism is characterized by also comprising a second air duct; one end of the second air duct is communicated with the air storage chamber, and the other end of the second air duct is communicated with the pump mechanism.
Further, the pressure sensor is installed outside the air storage cavity; the scraper adsorption mechanism also comprises a pressure detection vent pipeline; one end of the pressure detection vent pipeline is communicated with the air storage chamber, the other end of the pressure detection vent pipeline is communicated with the pressure sensor, and the pressure detection vent pipeline and the pressure sensor are communicated in a sealed mode to form a sealed space.
Further, the pressure sensor is mounted within the gas storage chamber.
Further, the pump mechanism is a negative pressure pump.
Compared with the prior art, the utility model discloses mainly there is following beneficial effect:
the above-mentioned scraper adsorption equipment who provides is linked together through the pump mechanism that will be used for the gas storage cavity of the holding tank of intercommunication scraper and be used for extracting gas in the gas storage cavity, utilizes pump mechanism to make and forms the negative pressure in the gas storage cavity, and then makes the holding tank of scraper also form the negative pressure in the airtight space with photosensitive liquid resin formation, utilizes the negative pressure balance to guarantee that the scraper eliminates the bubble on liquid photosensitive resin surface at the coating in-process, and then guarantees that the coating levels. The air storage chamber is communicated with one end of the air inlet pipeline, the other end of the air inlet pipeline is communicated with the outside air or the air conveying device, and the air inlet pipeline is provided with an adjusting valve for adjusting air inflow, so that the pressure in the air storage chamber is adjustable, and the adsorption capacity of the scraper on the liquid photosensitive resin is adjustable. The pressure sensor on the controller detects the pressure in the gas storage cavity, and the control circuit on the controller automatically adjusts the working rotating speed of the pump mechanism according to the pressure in the gas storage cavity detected by the pressure sensor, so that the pressure in the gas storage cavity is stable. This adsorption apparatus need not artifical the regulation, can realize the automatic stabilization defoaming, has improved printing efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a scraper suction mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a scraper adsorption mechanism and a holding tank thereof according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a scraper suction mechanism according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a scraper suction mechanism according to an embodiment of the present invention.
Reference numerals: the device comprises a scraper 1, an air storage chamber 2, a pump mechanism 3, a controller 4, an air inlet pipeline 5, a regulating valve 6, a first air duct 7, a second air duct 8, a pressure detection air duct 9 and a containing groove 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1 and 2, fig. 1 shows a schematic structural diagram of a scraper adsorbing mechanism provided by the present invention, fig. 2 shows a schematic structural diagram of a scraper adsorbing mechanism and an accommodating tank thereof provided by the present invention, and the accommodating tank 10 is located at the bottom of the scraper and is used for adsorbing liquid photosensitive resin. Referring to fig. 3 and 4, the present embodiment provides a scraper suction mechanism, which includes an air storage chamber 2 for communicating with a containing groove 10 of a scraper, a pump mechanism 3 for pumping air in the air storage chamber 2, and a controller 4. The air storage chamber 2 is communicated with one end of an air inlet pipeline 5, the other end of the air inlet pipeline 5 is communicated with the outside air or an air transmission device, and an adjusting valve 6 for adjusting air inflow is arranged on the air inlet pipeline 5. The controller 4 comprises a control circuit and a pressure sensor electrically connected with the control circuit, the pressure sensor is used for detecting the pressure in the air storage chamber 2, the control circuit is electrically connected with the pump mechanism 3, and the control circuit is used for controlling the working rotating speed of the pump mechanism 3 according to the pressure in the air storage chamber 2 detected by the pressure sensor.
The above-mentioned scraper adsorption apparatus who provides, the gas storage chamber 2 through the holding tank 10 that will be used for communicating scraper 1 is linked together with the pump mechanism 3 that is used for extracting gas in the gas storage chamber 2, utilize pump mechanism 3 to make and form the negative pressure in the gas storage chamber 2, and then make holding tank 10 of scraper 1 also form the negative pressure in the airtight space with photosensitive liquid resin formation, utilize negative pressure balance to guarantee that scraper 1 eliminates the bubble on liquid photosensitive resin surface at the coating in-process, and then guarantee that the coating levels. The air storage chamber 2 is communicated with one end of an air inlet pipeline 5, the other end of the air inlet pipeline 5 is communicated with the outside air or an air conveying device, and an adjusting valve 6 for adjusting air inflow is arranged on the air inlet pipeline, so that the pressure in the air storage chamber 2 is adjustable, and the adsorption capacity of the scraper 1 on the liquid photosensitive resin is adjustable. The pressure sensor on the controller 4 detects the pressure in the air storage chamber 2, and the control circuit on the controller 4 automatically adjusts the working rotating speed of the pump mechanism 3 according to the pressure in the air storage chamber 2 detected by the pressure sensor, so that the pressure in the air storage chamber 2 is stable. This adsorption apparatus need not artifical the regulation, can realize the automatic stabilization defoaming, has improved printing efficiency.
As an embodiment of the present invention, the scraper adsorbing mechanism further includes a first air duct 7. One end of the first air duct 7 is communicated with the air storage chamber 2, and the other end of the first air duct 7 is communicated with the accommodating groove 10 of the scraper 1. After negative pressure is formed in the gas storage cavity 2, the holding groove 10 of the scraper 1 is communicated with the gas storage cavity 2, so that negative pressure is formed in a closed space formed by the liquid photosensitive resin, and the liquid photosensitive resin is adsorbed. The first venting conduit should have good tightness.
Preferably, the scraper suction mechanism further comprises a second vent conduit 8. One end of the second vent pipe 8 is communicated with the air storage chamber 2, and the other end of the second vent pipe 8 is communicated with the pump mechanism 3. The pump mechanism 3 is a device or apparatus for changing the air pressure of the air storage chamber 2 by evacuating the air storage chamber 2 mechanically, physically, chemically, or physico-chemically.
Optionally, the pressure sensor is mounted outside the gas storage chamber 2. The scraper adsorption mechanism further comprises a pressure detection vent pipe 9. One end of the pressure detection vent pipeline 9 is communicated with the gas storage chamber 2, the other end of the pressure detection vent pipeline 9 is communicated with the pressure sensor, and the pressure detection vent pipeline 9 and the pressure sensor are communicated in a sealing mode to form a sealing space. The pressure sensor is used for measuring the pressure in the air storage chamber 2 through the pressure detection vent pipeline 9, the pressure sensor converts a pressure signal into an electric signal and feeds the electric signal back to the controller 4, and the controller 4 adjusts the rotating speed of the pump mechanism 3 after receiving the signal so as to ensure that the negative pressure value in the air storage chamber 2 is in a stable state. The whole control process is in a closed-loop system, and the closed-loop system has the capability of inhibiting interference and provides sufficient guarantee for stabilizing the negative pressure value.
Optionally, a pressure sensor is mounted within the gas storage chamber 2. The pressure sensor can directly measure the pressure value in the air storage chamber 2, and after the pressure value is converted into an electric signal, the electric signal is fed back to the controller 4 through the electric connection, and the controller 4 adjusts the rotating speed of the pump mechanism 3 after receiving the signal so as to ensure that the negative pressure value in the air storage chamber 2 is in a stable state. The whole control process is in a closed-loop system, and the closed-loop system has the capability of inhibiting interference and provides sufficient guarantee for stabilizing the negative pressure value.
The pump mechanism 3 is a negative pressure pump. The negative pressure pump 3 utilizes the circular motion of the motor to lead the diaphragm in the pump to do reciprocating motion through a mechanical device, thereby compressing and stretching the air in the pump cavity to form negative pressure, generating pressure difference between the air suction opening and the external atmospheric pressure, sucking the air into the pump cavity under the action of the pressure difference, and then discharging the air from the exhaust opening. Here, the negative pressure pump 3 communicates with the air reservoir chamber 2 and causes the air reservoir chamber 2 to form a negative pressure.
The utility model also provides a photocuring 3D printing apparatus, including above-mentioned scraper adsorption apparatus structure.
Above-mentioned a photocuring 3D printing apparatus who provides sets up the scraper adsorption equipment of a but automatic stabilization defoaming, has guaranteed the level and smooth coating of liquid photosensitive resin, has improved printing efficiency.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The scraper adsorption mechanism is characterized by comprising a gas storage cavity, a pump mechanism and a controller, wherein the gas storage cavity is used for being communicated with a containing groove of a scraper; the air storage chamber is communicated with one end of an air inlet pipeline, the other end of the air inlet pipeline is communicated with outside air or an air transmission device, and an adjusting valve for adjusting air inflow is arranged on the air inlet pipeline; the controller comprises a control circuit and a pressure sensor electrically connected with the control circuit, the pressure sensor is used for detecting the pressure in the air storage cavity, the control circuit is electrically connected with the pump mechanism, and the control circuit is used for controlling the working rotating speed of the pump mechanism according to the pressure in the air storage cavity detected by the pressure sensor.
2. The doctor blade suction mechanism according to claim 1, further comprising a first vent conduit; one end of the first air duct is communicated with the air storage chamber, and the other end of the first air duct is communicated with the accommodating groove of the scraper.
3. The doctor blade suction mechanism according to claim 1, further comprising a second vent conduit; one end of the second air duct is communicated with the air storage chamber, and the other end of the second air duct is communicated with the pump mechanism.
4. The doctor blade suction mechanism as claimed in claim 1, wherein said pressure sensor is mounted outside said gas storage chamber; the scraper adsorption mechanism also comprises a pressure detection vent pipeline; one end of the pressure detection vent pipeline is communicated with the air storage chamber, the other end of the pressure detection vent pipeline is communicated with the pressure sensor, and the pressure detection vent pipeline and the pressure sensor are communicated in a sealed mode to form a sealed space.
5. The doctor blade suction mechanism as claimed in claim 1, wherein the pressure sensor is mounted within the air storage chamber.
6. A scraper suction mechanism according to any one of claims 1 or 3, wherein the pump mechanism is a negative pressure pump.
7. A photocuring 3D printing device comprising the blade adsorption mechanism of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020576567.4U CN212472412U (en) | 2020-04-17 | 2020-04-17 | Scraper adsorption equipment constructs and photocuring 3D printing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020576567.4U CN212472412U (en) | 2020-04-17 | 2020-04-17 | Scraper adsorption equipment constructs and photocuring 3D printing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212472412U true CN212472412U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020576567.4U Active CN212472412U (en) | 2020-04-17 | 2020-04-17 | Scraper adsorption equipment constructs and photocuring 3D printing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212472412U (en) |
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2020
- 2020-04-17 CN CN202020576567.4U patent/CN212472412U/en active Active
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