Small photocuring forming equipment with liquid level flattening function

By introducing a scraper module and a negative pressure mechanism into the photopolymerization molding equipment, the problems of uneven liquid surface and air bubbles were solved, achieving uniform liquid surface spreading and air bubble removal, thus improving printing quality and equipment compactness.

CN223685993UActive Publication Date: 2025-12-19GUANGZHOU HUACHUANG ADDITIVE TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423153322.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-12-19
Estimated Expiration
2034-12-20

AI Technical Summary

Technical Problem

Existing photopolymerization line forming equipment suffers from problems such as large size, low modularity, cumbersome material replacement, and uneven liquid surface, resulting in poor printing quality.

Method used

The system employs a scraper module and a negative pressure mechanism. The scraper is driven to move along the X-axis by a longitudinal moving mechanism, which achieves uniform and flat application of the liquid material. The negative pressure mechanism removes air bubbles, ensuring a smooth liquid surface.

Benefits of technology

It improves print quality, ensures uniformity and bubble-free liquid levels in each layer, enhances printing accuracy and efficiency, and adapts to miniaturization and integration requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to small-sized photocuring forming equipment with a liquid level flattening function, which comprises a rack and a forming cylinder arranged below the rack, a scraper module is arranged above the forming cylinder, and the scraper module comprises a scraper, a longitudinal moving mechanism and a negative pressure mechanism; the scraper is mounted on the longitudinal moving mechanism; the longitudinal moving mechanism is installed on the rack and used for driving the scraper to move on the rack in the X-axis direction, and liquid level materials on the forming cylinder are evenly laid and flattened. The negative pressure mechanism is connected to the scraper and used for sucking away bubbles on the liquid level when the scraper works. The longitudinal moving mechanism drives the scraper to accurately move on the rack platform in the X-axis direction, and liquid level materials are evenly laid and leveled through flat scraping of the scraper on the liquid level of the forming cylinder. Meanwhile, the negative pressure mechanism is matched with the scraper, bubbles generated on the liquid level in the working process of the scraper can be removed, it is ensured that the liquid level is smooth and uniform, the phenomenon that the printing effect is affected by uneven distribution of the bubbles is avoided, and therefore the printing quality of each layer is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to additive manufacturing technical field, concretely is a small -size light solidification forming equipment with liquid level function. BACKGROUND

[0002] Light solidification line forming equipment is widely used in additive manufacturing technology, especially has important role in rapid prototyping and small -batch production. However, the existing light solidification line forming equipment generally has problems such as large volume, low modularization, material replacement is complicated, limited its application in miniaturization, integration and high efficiency.

[0003] The light solidification line forming equipment of prior art when working, first make the printing platform move to the liquid level of forming cylinder, then utilize line forming module to the liquid level on the printing platform carries out light solidification. When completing the light solidification of a layer liquid level, printing platform drops certain distance and repeats the above action until completing all printing.

[0004] It has the following technical problems:

[0005] The liquid level on the printing platform is often not flat, sometimes there is bubble in the liquid level, leading to poor printing effect. INVENTION CONTENTS

[0006] In view of the problems in the prior art, the utility model aims at providing a small -size light solidification forming equipment with liquid level function, which can level the liquid level on the printing platform and remove the bubbles therein, and improve the printing quality.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A small -size light solidification forming equipment with liquid level function, comprising a rack and a forming cylinder arranged below the rack,

[0009] A scraper module is arranged above the forming cylinder, and the scraper module comprises a scraper, a longitudinal moving mechanism and a negative pressure mechanism.

[0010] The scraper is installed on the longitudinal moving mechanism.

[0011] The longitudinal moving mechanism is installed on the rack and is used to drive the scraper to move along the X-axis direction on the rack, so as to realize uniform laying and leveling of the liquid material on the forming cylinder.

[0012] The negative pressure mechanism is connected to the scraper and is used to suck away the bubbles on the liquid surface during the operation of the scraper.

[0013] Further, the longitudinal moving mechanism is provided with a scraper mounting plate, and the scraper is installed on the longitudinal moving mechanism through the scraper mounting plate.

[0014] Further, the longitudinal moving mechanism comprises a scraper synchronous belt, a scraper synchronous belt wheel and a scraper stepping motor, the scraper synchronous belt wheel is rotationally connected to the rack; the scraper stepping motor is installed on the rack and is used for driving the scraper synchronous belt wheel to rotate and further drive the scraper synchronous belt to move, and the scraper synchronous belt is connected to the scraper mounting plate.

[0015] Further, the longitudinal moving mechanism further comprises a synchronous belt pressing plate, the synchronous belt pressing plate abuts against the scraper synchronous belt and is used for keeping the synchronous belt tensioned.

[0016] Further, the longitudinal moving mechanism further comprises an optical shaft support and a scraper optical shaft, the scraper optical shaft is arranged in the optical shaft support and the scraper synchronous belt wheel, the scraper synchronous belt rotates on the scraper optical shaft, and the optical shaft support is provided with a bearing which is sleeved on the scraper optical shaft.

[0017] Further, the longitudinal moving mechanism further comprises a guide rail, the extension direction of the guide rail is parallel to the movement direction of the scraper, and the scraper mounting plate is connected with a sliding block which is slidingly connected to the guide rail.

[0018] Further, the negative pressure mechanism comprises a gas pipe, a gas pipe adapter and a vacuum pump, the gas pipe adapter is installed in correspondence with the scraper, the gas pipe adapter is connected to the vacuum pump through the gas pipe, and the vacuum pump sucks away the liquid surface bubbles generated during the operation of the scraper through the gas pipe.

[0019] Further, the vacuum pump is connected with a waterproof box and is used for preventing water or liquid from entering the gas circuit system.

[0020] Further, the forming cylinder is provided, above, with a printing platform lifting module which is fixedly connected to the rack and is provided with a printing platform and is used for adjusting the distance between the printing platform and the liquid surface of the forming cylinder.

[0021] Further, the rack is provided with an optical engine module, the optical engine module comprises an optical screw sliding table assembly and a line forming light machine, the optical screw sliding table assembly is installed on the rack and moves laterally along the Y-axis direction, and the line forming light machine is connected with the optical screw sliding table assembly and is used for realizing the photocuring of each layer of the liquid surface on the printing platform through lateral movement.

[0022] Overall, the utility model has the following advantages:

[0023] The longitudinal moving mechanism drives the scraper to move accurately along the X-axis direction on the rack platform, and the uniform laying and leveling of the liquid surface material are realized through the flat scraping of the scraper on the liquid surface of the forming cylinder. Meanwhile, the negative pressure mechanism cooperates with the scraper and can remove the bubbles generated on the liquid surface during the operation of the scraper, so that the liquid surface is smooth and uniform, the printing effect is avoided from being affected by the bubbles or uneven distribution, and the printing quality of each layer is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure schematic view of the equipment of the utility model;

[0025] Figure 2 is a structural schematic diagram of the doctor blade module;

[0026] Figure 3 is a structural schematic diagram of the optical engine module;

[0027] Figure 4 is a structural schematic diagram of the printing platform lifting module;

[0028] In the figure:

[0029] 1 - rack;

[0030] 2 - doctor blade module; 201 - doctor blade; 202 - doctor blade mounting plate; 203 - longitudinal movement mechanism; 20301 - doctor blade synchronous belt; 20302 - synchronous belt pressing plate; 20303 - doctor blade synchronous belt pulley; 20304 - doctor blade stepping motor; 20305 - doctor blade stepping motor support; 20306 - light axis of doctor blade; 20307 - light axis support; 20308 - bearing; 20309 - sliding block; 20310 - guide rail; 204 - negative pressure mechanism; 20401 - air pipe; 20402 - air pipe adapter; 20403 - air path mounting plate; 20404 - vacuum pump; 20405 - waterproof box;

[0031] 3 - liquid level control module;

[0032] 4 - optical engine module; 401 - optical stepping motor; 402 - optical stepping motor support; 403 - optical synchronous belt; 404 - optical synchronous belt pulley; 405 - optical lead screw sliding table assembly; 406 - first adapter plate; 407 - second adapter plate; 408 - line forming optical machine;

[0033] 5 - printing platform lifting module; 501 - platform stepping motor; 502 - platform stepping motor support; 503 - printing platform; 504 - platform support rod; 505 - Z-axis mounting plate; 506 - platform adapter plate; 507 - platform lead screw sliding table assembly;

[0034] 6 - forming cylinder. DETAILED DESCRIPTION

[0035] The utility model will be explained in further detail as follows.

[0036] As Figure 1 shown, a small-sized light-curing forming device with liquid level flattening function, comprising a rack 1 and a forming cylinder 6 arranged below the rack 1, a doctor blade module 2 is arranged above the forming cylinder 6, the doctor blade module 2 comprises a doctor blade 201, a longitudinal movement mechanism 203 and a negative pressure mechanism 204;

[0037] The doctor blade 201 is mounted on the longitudinal movement mechanism 203;

[0038] The longitudinal moving mechanism 203 is installed on the rack 1 and is used to drive the scraper 201 to move along the X-axis direction on the rack 1, so as to realize uniform paving and leveling of the liquid surface material on the forming cylinder 6.

[0039] The negative pressure mechanism 204 is connected to the scraper 201 and is used to suck away the bubbles on the liquid surface during the working of the scraper 201.

[0040] The utility model discloses a longitudinal moving mechanism 203 drives the scraper 201 to move accurately along the X-axis direction on the platform of the rack 1, and realizes uniform paving and leveling of the liquid surface material through the flat scraping of the scraper 201 on the liquid surface of the forming cylinder 6. Meanwhile, the negative pressure mechanism 204 cooperates with the scraper 201, can remove the bubbles generated on the liquid surface during the working of the scraper 201, ensures that the liquid surface is smooth and uniform, avoids the influence of the bubbles or uneven distribution on the printing effect, thereby improves the printing quality of each layer.

[0041] Specifically, the utility model discloses a rack 1, a scraper module 2, a liquid surface control module 3, an optical engine module 4, a printing platform lifting module 5 and a forming cylinder 6.

[0042] The rack 1 provides a stable platform as the basic support structure of the equipment, so that various modules can work effectively and cooperatively, and the stability and reliability of the equipment are ensured.

[0043] The scraper module 2 is longitudinally installed on the platform of the rack 1 and is used to perform leveling treatment on the liquid surface after curing of each layer, so as to ensure that the material surface is smooth and bubble-free.

[0044] The liquid surface control module 3 is vertically installed on one side of the platform of the rack 1 and is used to monitor the liquid surface height in real time and feed back information to the control system, so as to adjust the liquid surface height according to the feedback information, thereby ensuring that the liquid surface of each layer of material always maintains at a predetermined height through control of the liquid surface height.

[0045] The optical engine module 4 is transversely installed on the platform of the rack 1 and is responsible for the layer-by-layer forming of the photocured layer during the printing process.

[0046] The printing platform lifting module 5 is installed at a vertical position of the platform of the rack 1 and is used to control the up-and-down movement of the printing platform 503 on the Z-axis, so as to ensure the accurate distance between the printing platform 503 and the liquid surface, thereby maintaining good printing quality.

[0047] The forming cylinder 6 is located below the printing platform 503 of the rack 1 and is used to store the material required for printing.

[0048] For example Figure 2As shown, the scraper module 2 includes a scraper 201, a scraper mounting plate 202, a longitudinal movement mechanism 203, and a negative pressure mechanism 204. The longitudinal movement mechanism 203 is mounted on the rack 1, the scraper 201 is mounted on the longitudinal movement mechanism 203 through the scraper mounting plate 202, and the longitudinal movement mechanism 203 enables the scraper 201 to move accurately along the X-axis direction on the platform of the rack 1, thereby achieving uniform laying and leveling of the liquid surface material. The main function of the scraper module 2 is to lay and level each layer of liquid surface, avoiding bubbles or uneven distribution affecting the printing effect. The negative pressure mechanism 204 cooperates with the scraper module 2, is connected to the vacuum pump 20404 through the air pipe 20401 and the air pipe adapter 20402, and can remove the bubbles generated during the operation of the scraper 201, ensuring the smoothness and uniformity of the liquid surface, thereby improving the printing quality of each layer. The longitudinal movement mechanism 203 includes a scraper synchronous belt 20301, a synchronous belt pressing plate 20302, a scraper synchronous belt pulley 20303, a scraper stepping motor 20304, a scraper stepping motor support 20305, a scraper light shaft 20306, a light shaft support 20307, a bearing 20308, a sliding block 20309, and a guide rail 20310. This module drives the scraper synchronous belt 20301 through the scraper stepping motor 20304 mounted on the scraper stepping motor support 20305, drives the scraper synchronous belt pulley 20303 to rotate, and keeps the synchronous belt tensioned through the synchronous belt pressing plate 20302, ensuring that the scraper 201 moves smoothly and accurately along the guide rail 20310 in the longitudinal direction. The scraper synchronous belt 20301 rotates on the scraper light shaft 20306, and the cooperation of the scraper light shaft 20306 and the light shaft support 20307 ensures the stability of the scraper light shaft 20306 during movement. The bearing 20308 is sleeved on the scraper light shaft 20306 to support the scraper light shaft 20306 and reduce friction, ensuring smooth movement of the scraper 201. The sliding block 20309 cooperates with the guide rail 20310 to ensure accurate longitudinal movement of the scraper 201 during the entire operation process, ensuring the uniformity of each layer of liquid surface. The negative pressure mechanism 204 includes an air pipe 20401, an air pipe adapter 20402, an air path mounting plate 20403, a vacuum pump 20404, and a waterproof box 20405. The negative pressure mechanism 204 connects the vacuum pump 20404 and the scraper module 2 through the air pipe 20401, which can effectively remove the bubbles generated during the operation of the scraper 201. The air pipe adapter 20402 is connected to the scraper 201 to ensure accurate and error-free air extraction. The vacuum pump 20404 sucks and discharges the bubbles generated during the operation of the scraper 201 through the air pipe 20401, ensuring that each layer of liquid surface can be smoothly laid without bubbles, avoiding affecting the precision and quality of printing. At the same time, the air path mounting plate 20403 is connected with the waterproof box 20405 to prevent water or liquid from entering the air path system, ensuring long-term stable operation of the equipment.

[0049] As Figure 3As shown, the optical engine module 4 includes an optical stepper motor 401, an optical stepper motor bracket 402, an optical synchronous belt 403, an optical synchronous belt wheel 404, an optical lead screw slide assembly 405, a first adapter plate 406, a second adapter plate 407, and a line forming light machine 408. The main function of this module is to solidify the liquid surface on the printing platform 503 layer by layer through the line forming light machine 408. The optical stepper motor 401 is fixed on the rack 1 through the optical stepper motor bracket 402, drives the optical synchronous belt 403 and the optical synchronous belt wheel 404, and thus drives the optical lead screw slide assembly 405 to move accurately in the Y-axis direction. The optical lead screw slide assembly 405 is installed on the slide through the first adapter plate 406 and the second adapter plate 407, ensuring that the light machine can move accurately and stably in the horizontal direction on the rack 1. The line forming light machine 408 is installed on the slide through the adapter plate and connected with the optical lead screw slide assembly 405, which can move accurately in the horizontal direction according to the preset trajectory, realizing the light solidification of each layer of liquid surface. The horizontal movement of the light machine cooperates with the layer-by-layer solidification of the liquid surface on the printing platform 503, ensuring the printing accuracy and stability.

[0050] The scraper module 2 and the optical engine module 4 move along the longitudinal and horizontal directions of the rack 1 respectively, making the whole device structure more compact, significantly reducing the volume of the equipment, occupying less space, and better adapting to the miniaturized production environment, improving the space utilization of the equipment, and enabling efficient operation in a smaller working space, meeting the needs of modern manufacturing for compact equipment.

[0051] As shown, Figure 4 The printing platform lifting module 5 includes a platform stepper motor 501, a platform stepper motor bracket 502, a printing platform 503, a platform support rod 504, a Z-axis mounting plate 505, a platform adapter plate 506, and a platform lead screw slide assembly 507. The main function of this module is to control the up and down movement of the printing platform 503 along the Z-axis, accurately adjust the distance between the printing platform 503 and the liquid surface, and thus ensure the accurate solidification of each layer of material. The platform stepper motor 501 is fixed on the rack 1 through the platform stepper motor bracket 502, and cooperates with the platform lead screw slide assembly 507 through a coupling, driving the platform lead screw slide assembly 507 to move up and down along the Z-axis. The Z-axis mounting plate 505 is fixed on the rack 1, and the platform adapter plate 506 is installed on the Z-axis mounting plate 505 through the platform lead screw slide assembly 507, ensuring the stable movement of the printing platform 503. The platform support rod 504 is installed on both sides of the platform adapter plate 506, supporting the printing platform 503 and ensuring that the platform does not tilt or become unstable during lifting. The printing platform 503 is supported by the platform support rod 504 and can move accurately up and down under the drive of the platform stepper motor 501, controlling the relative position between the printing platform 503 and the liquid surface.

[0052] The above embodiment is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above embodiment, and any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the present application should be an equivalent replacement mode, and all are included in the protection scope of the present application.

Claims

1. A small-scale photopolymerization molding device with a function of leveling liquid surface, comprising a frame and a molding cylinder disposed below the frame, characterized in that: A scraper module is provided above the forming cylinder. The scraper module includes a scraper, a longitudinal moving mechanism, and a negative pressure mechanism. The scraper is mounted on the longitudinal moving mechanism; The longitudinal moving mechanism is mounted on the frame and is used to drive the scraper to move along the X-axis on the frame to achieve uniform and smooth laying of the liquid material on the forming cylinder. The negative pressure mechanism is connected to the scraper and is used to remove air bubbles on the liquid surface when the scraper is working.

2. The small-scale photopolymerization molding equipment with liquid surface smoothing function according to claim 1, characterized in that: The longitudinal moving mechanism is equipped with a scraper mounting plate, and the scraper is mounted on the longitudinal moving mechanism through the scraper mounting plate.

3. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 2, characterized in that: The longitudinal movement mechanism includes a scraper timing belt, a scraper timing pulley, and a scraper stepper motor. The scraper timing pulley is rotatably connected to the frame. The scraper stepper motor is mounted on the frame and is used to drive the scraper timing pulley to rotate, thereby driving the scraper timing belt to move. The scraper timing belt is connected to the scraper mounting plate.

4. A small-scale photopolymerization molding device with a smooth liquid surface function according to claim 3, characterized in that: The longitudinal movement mechanism also includes a timing belt pressure plate, which abuts against the scraper timing belt to keep the timing belt taut.

5. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 3, characterized in that: The longitudinal movement mechanism also includes an optical axis support and a scraper optical axis. The scraper optical axis passes through the optical axis support and the scraper timing belt pulley. The scraper timing belt rotates on the scraper optical axis. The optical axis support is equipped with a bearing, which is sleeved on the scraper optical axis.

6. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 2, characterized in that: The longitudinal movement mechanism also includes a guide rail, the extension direction of which is parallel to the movement direction of the scraper, and a slider connected to the scraper mounting plate, the slider being slidably connected to the guide rail.

7. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 1, characterized in that: The negative pressure mechanism includes an air pipe, an air pipe adapter, and a vacuum pump. The air pipe adapter is installed corresponding to the scraper, and the air pipe adapter is connected to the vacuum pump through the air pipe. The vacuum pump sucks away the liquid bubbles generated by the scraper when it is working through the air pipe.

8. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 7, characterized in that: The vacuum pump is connected to a waterproof box to prevent moisture or liquid from entering the gas path system.

9. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 1, characterized in that: A printing platform lifting module is provided above the forming cylinder. The printing platform lifting module is fixed to the frame and has a printing platform, which is used to adjust the distance between the printing platform and the liquid level in the forming cylinder.

10. A small-scale photopolymerization molding device with a function of smoothing the liquid surface according to claim 9, characterized in that: The frame is equipped with an optical engine module, which includes an optical lead screw slide assembly and a line forming optical engine. The optical lead screw slide assembly is mounted on the frame and moves laterally along the Y-axis. The line forming optical engine is connected to the optical lead screw slide assembly and is used to achieve photocuring of each liquid layer on the printing platform through lateral movement.