Photocuring printing device for automobile part production

Abstract

The invention relates to the technical field of light-curing printing, and discloses a light-curing printing device for automobile part production, which comprises a working base station, the top end of the working base station is fixedly connected with a control center, the side surface of the control center is movably connected with a light-curing printing head, and the bottom end of the light-curing printing head is fixedly connected with a light-curing printing plate. A resin tank is placed in the middle of the top end of the working base, a resin supplementing mechanism is fixedly connected to the side face, close to the control center, of the top end of the working base, and an air exhaust mechanism is connected to the side face, away from the control center, of the top end of the working base. The automobile parts are produced in a light curing printing mode, the manufacturing process can be simplified, complex mold manufacturing is not needed, the manufacturing period is shortened, the production cost is reduced, the yield and the quality are improved, liquid resin is automatically supplemented during light curing printing, and the production efficiency is improved. The influence on the quality of the automobile parts due to insufficient resin is avoided, and the quality of the automobile parts is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of photocuring printing, and more specifically to a photocuring printing device for producing automobile parts. Background Art

[0002] Photocuring printing is a 3D printing technology that uses photosensitive resin materials to cure and shape under light. The working principle of photocuring printing is to irradiate photosensitive resin with a laser or digital light processing projector, so that it can quickly cross-link and cure under light.

[0003] During photocuring printing, liquid photosensitive resin is injected into the printing pool, the printing platform rises until it is one layer thick from the liquid surface, the horizontal scraper scrapes the liquid surface flat, the laser generates a laser beam, which is focused by the lens and irradiated on the polarizer. The liquid surface is selectively scanned according to the model data, and the irradiated liquid resin gradually solidifies. After the curing is completed, the printing platform is lowered by one layer thickness, the scraper scrapes the liquid surface flat again, and the laser irradiates and solidifies again. This is repeated until the entire model is printed. Due to the high precision of photocuring printing, it is often used to process various automotive parts;

[0004] In the traditional manufacturing process, most auto parts are made through multiple sets of molds, usually sawing, drawing, multi-step mold pressing, mold punching, mold trimming and other steps. Due to the complexity of mold making, it takes a long time to discuss and modify the model size parameters. Once the local size of the parts changes slightly, the original mold can no longer be used, which makes the production cost of auto parts high, the production cycle long, and the quality is not high;

[0005] When today's photocuring printing is working, the product is formed by liquid resin, so the liquid resin is constantly consumed. If the liquid resin is insufficient, the machine needs to be stopped for resin replenishment. At this time, there will be a clear dividing line between the processed products, affecting the product quality. When the resin is replenished, if the resin remaining in the pipeline cannot be removed in time, it will solidify in the pipeline and mix with the liquid resin for the next processing, thereby affecting the subsequent product quality. In addition, the resin has a certain smell in the air, and long-term inhalation will have an impact on the body. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a light-curing printing device for automobile parts production to solve the technical problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a light-curing printing device for automobile parts production, comprising a working base, the top of the working base is fixedly connected to a control center, the side of the control center is movably connected to a light-curing print head, the bottom of the light-curing print head is fixedly connected to a light-curing printing plate, a resin tank is placed in the middle of the top of the working base, a side of the top of the working base close to the control center is fixedly connected to a resin replenishing mechanism, and a side of the top of the working base away from the control center is connected to an exhaust mechanism;

[0008] The resin replenishing mechanism includes a resin barrel filled with liquid resin, the top end of the resin barrel is fixedly connected to a servo motor, the bottom end of the servo motor is fixedly connected to a threaded rod, the side of the threaded rod is threadedly connected to a moving block, the bottom end of the moving block is fixedly connected to a sealing plate, the top end of the resin barrel is provided with a limiting groove matched with the moving block, and the bottom end of the resin barrel is provided with a liquid groove matched with the sealing plate, and liquid resin is placed in the liquid groove of the resin barrel.

[0009] In a preferred embodiment, the bottom end of the resin cylinder is threadedly connected to a threaded sleeve, the bottom end of the threaded sleeve is fixedly connected to a connecting pipe, the bottom end of the connecting pipe contacts the bottom end of the resin tank, and the bottom end of the connecting pipe is provided with a avoidance groove for liquid flow.

[0010] In a preferred embodiment, a movable plate is fixedly connected to the side of the resin replenishing mechanism, and two limit rods are movably connected inside the movable plate. The top ends of the two limit rods are fixedly connected to the limit plates, and the sides of the two limit plates are fixedly connected to support plates.

[0011] In a preferred embodiment, support springs are provided on the sides of the two limit rods, the support springs are located above the movable plate, and the top ends of the support springs are in contact with the bottom ends of the upper limit plates, and a distance of two centimeters is left between the bottom ends of the movable plate and the top ends of the lower limit plates.

[0012] In a preferred embodiment, the exhaust mechanism includes a rotating motor for providing power, a rotating shaft is fixedly connected to the side of the rotating motor, a blade group is fixedly connected to the side of the rotating shaft away from the rotating motor, the blade group is located in an exhaust hole in a working base, and gas pipes are fixedly connected to both sides of the exhaust hole in the working base.

[0013] In a preferred embodiment, the sides of the two gas pipes are fixedly connected with side exhaust plates, the sides of the side exhaust plates are provided with slide grooves adapted to the connecting blocks, the sides of the connecting blocks away from the side exhaust plates are fixedly connected with positive exhaust plates, and the bottom ends of the side exhaust plates are fixedly connected to the top ends of the working bases.

[0014] In a preferred embodiment, gas passages are provided inside the side air suction plate and the positive air suction plate, and the gas passages in the side air suction plate are connected with the gas passages in the positive air suction plate through a connecting block, and the side air suction plate and the positive air suction plate are exhausted through the gas passages.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention produces automobile parts by light-curing printing, which can simplify the production process, eliminate the need for complex mold manufacturing, shorten the production cycle, reduce production costs, improve the yield rate and quality, and automatically replenish liquid resin during light-curing printing to avoid quality damage to automobile parts due to insufficient resin, thereby ensuring the quality of automobile parts;

[0017] 2. The servo motor of the present invention drives the sealing plate downward by the moving block through the threaded rod, and then injects the liquid resin in the resin cylinder into the resin tank through the connecting pipe, and automatically replenishes the liquid resin. After printing, the threaded sleeve is rotated out from the side of the resin cylinder, and the threaded sleeve is separated from the resin cylinder, so that the threaded sleeve and the connecting pipe are cleaned to avoid the solidification of the resin. The resin in the resin cylinder can be pushed out by the sealing plate, ensuring that the resin replenishing mechanism is clean as a whole;

[0018] 3. The rotating motor of the present invention drives the blade group to rotate through the rotating shaft. The blade group is exhausted when it rotates, so the two gas pipes are exhausted synchronously, so that the side exhaust plate is exhausted through the gas channel inside it, and the positive exhaust plate is connected to the side exhaust plate through a connecting block. The positive exhaust plate can also be exhausted to extract the gas dissipated by the resin in the resin tank to protect the on-site personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the working base of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall structure of the resin replenishing mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of the exploded structure of the resin replenishing mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of the internal structure of the resin cylinder of the present invention.

[0024] Figure 6 It is a schematic diagram of the overall structure of the air extraction mechanism of the present invention.

[0025] Figure 7It is a schematic diagram of the structure of the side exhaust plate of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the positive air extraction plate of the present invention.

[0027] The accompanying drawings are marked as follows: 1. working base; 2. control center; 3. photocuring print head; 4. photocuring print plate; 5. resin tank; 6. resin replenishing mechanism; 601. support plate; 602. limit plate; 603. limit rod; 604. moving plate; 605. support spring; 606. resin cylinder; 607. servo motor; 608. threaded rod; 609. moving block; 610. sealing plate; 611. threaded sleeve; 612. connecting pipe; 7. exhaust mechanism; 701. rotating motor; 702. rotating shaft; 703. blade group; 704. gas pipe; 705. side exhaust plate; 706. connecting block; 707. positive exhaust plate; 708. gas channel. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The photocuring printing device for automobile parts production involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Reference Figure 1 and Figure 2 The present invention provides a photocuring printing device for automobile parts production, including a working base 1, the top of the working base 1 is fixedly connected to a control center 2, the side of the control center 2 is movably connected to a photocuring print head 3, the bottom of the photocuring print head 3 is fixedly connected to a photocuring printing plate 4, a resin tank 5 is placed in the middle of the top of the working base 1, a resin replenishing mechanism 6 is fixedly connected to the side of the top of the working base 1 close to the control center 2, and an exhaust mechanism 7 is connected to the side of the top of the working base 1 away from the control center 2.

[0031] In the embodiment of the present application, the resin replenishing mechanism 6 is located at the top of the working base 1, and the opening of the resin replenishing mechanism 6 for replenishing liquid resin is located in the resin tank 5, and before the light-curing printing plate 4 moves upward, the light-curing printing plate 4 is located in the resin tank 5, and the exhaust part of the exhaust mechanism 7 is fixed above the working base 1, and the power part of the exhaust mechanism 7 is located in the exhaust slot hole opened in the working base 1, such as Figure 2As shown, in addition, when the exhaust mechanism 7 performs exhaust, the exhausted gas is discharged through the exhaust hole of the work base 1, and the exhausted gas will undergo subsequent purification treatment to avoid affecting the environment.

[0032] Reference Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The resin replenishing mechanism 6 includes a resin barrel 606 filled with liquid resin, the top of the resin barrel 606 is fixedly connected to a servo motor 607, the bottom of the servo motor 607 is fixedly connected to a threaded rod 608, the side of the threaded rod 608 is threadedly connected to a moving block 609, the bottom of the moving block 609 is fixedly connected to a sealing plate 610, the top of the resin barrel 606 is provided with a limiting groove matched with the moving block 609, and the bottom of the resin barrel 606 is provided with a liquid tank matched with the sealing plate 610, and liquid resin is placed in the liquid tank of the resin barrel 606, the bottom end of the resin barrel 606 is threadedly connected to a threaded sleeve 611, the bottom end of the threaded sleeve 611 is fixedly connected to a connecting pipe 612, and the connecting pipe The bottom end of 612 is in contact with the bottom end of the resin tank 5, and the bottom end of the connecting tube 612 is provided with a avoidance groove for liquid flow. The side of the resin replenishing mechanism 6 is fixedly connected to a movable plate 604, and the movable plate 604 is movably connected inside with two limit rods 603. The top ends of the two limit rods 603 are fixedly connected to the limit plates 602, and the sides of the two limit plates 602 are fixedly connected with support plates 601. The sides of the two limit rods 603 are provided with support springs 605, which are located above the movable plate 604, and the top ends of the support springs 605 are in contact with the bottom end of the upper limit plate 602. There is a distance of two centimeters between the bottom end of the movable plate 604 and the top end of the lower limit plate 602.

[0033] In the embodiment of the present application, when performing photocuring printing, the sealing plate 610 moves downward in the resin barrel 606, and the liquid resin in the resin barrel 606 can be replenished into the resin tank 5 to ensure that there is enough resin for use during printing. In addition, the sealing plate 610 is in a sealed state in the resin barrel 606, ensuring that the sealing plate 610 can completely push out the resin in the resin barrel 606. The resin barrel 606 is connected to the movable plate 604, and two supporting springs 605 are provided above the movable plate 604. Therefore, when the resin barrel 606 is working, the two supporting springs 605 can press the resin barrel 606 to the bottom, so that the resin barrel 606 is relatively flat when replenishing liquid resin or drawing in liquid resin. When the threaded sleeve 611 needs to be removed, it is only necessary to rotate the threaded sleeve 611 on the side of the resin barrel 606. When the threaded sleeve 611 rotates, the threaded sleeve 611 will move downward relative to the resin barrel 606, and the bottom of the connecting tube 612 is in contact with the resin tank 5. Therefore, the resin barrel 606 will move upward relative to the resin tank 5, ensuring that the threaded sleeve 611 can be taken away from the bottom of the resin barrel 606. After the threaded sleeve 611 is taken away, the threaded sleeve 611 and the connecting tube 612 can be cleaned to avoid resin residue. The bottom end of the connecting tube 612 is provided with an avoidance groove for liquid flow, which is convenient for the liquid resin to flow out when replenishing the liquid resin, and also convenient for the liquid resin to enter when sucking in the liquid resin.

[0034] Reference Figure 6 , Figure 7 as well as Figure 8 The exhaust mechanism 7 includes a rotating motor 701 for providing power, a rotating shaft 702 is fixedly connected to the side of the rotating motor 701, a blade group 703 is fixedly connected to the side of the rotating shaft 702 away from the rotating motor 701, and the blade group 703 is located in the exhaust hole in the working base 1. Gas pipes 704 are fixedly connected to both sides of the exhaust hole in the working base 1. Side exhaust plates 705 are fixedly connected to the sides of the two gas pipes 704. The side of the side exhaust plate 705 is provided with a connection block 706. The side of the side exhaust plate 705 is fixedly connected with the positive exhaust plate 707, and the bottom end of the side exhaust plate 705 is fixedly connected with the top end of the working base 1. The side exhaust plate 705 and the positive exhaust plate 707 are both provided with gas channels 708, and the gas channels 708 in the side exhaust plate 705 are connected with the gas channels 708 in the positive exhaust plate 707 through the connecting block 706, and the side exhaust plate 705 and the positive exhaust plate 707 are exhausted through the gas channels 708.

[0035] In the embodiment of the present application, when light-curing printing is performed, the rotation of the blade group 703 can be used for exhaust, so the gas pipe 704 will be exhausted, and the gas pipe 704 is connected to the side exhaust plate 705, so the gas pipe 704 will exhaust the gas on both sides of the resin tank 5 through the gas channel 708 in the side exhaust plate 705. Before light-curing is performed, the connecting block 706 does not enter the slide groove of the side exhaust plate 705, so the positive exhaust plate 707 is separated from the side exhaust plate 705. At this time, there is no obstruction in front of the resin tank 5, which is convenient for preparation work before light-curing. After the preparation is completed, the connecting block 706 enters the slide groove of the side exhaust plate 705. At this time, the positive exhaust plate 707 is connected to the side exhaust plate 705, and the gas channel 708 in the side exhaust plate 705 is connected with the gas channel 708 in the positive exhaust plate 707 through the connecting block 706, and the exhaust work is performed synchronously to ensure the exhaust effect.

[0036] Embodiment 2

[0037] A light-curing printing device for automobile parts production comprises the following steps:

[0038] Step S1, 3D model establishment: Based on the observation and measurement of the currently produced automobile door handles, we use UG to establish the preliminary model;

[0039] The visible part of the outside of the door handle is not a simple regular shape, but contains various curved surfaces. When building the model, choose the surface modeling suitable for designing complex and delicate irregular shapes, connect the points into lines, and form the surface from the lines, and then stretch and trim the sheet to obtain the external UG model of the door handle. The internal structure of the door handle is more complex and the shape is also more irregular. It is more composed of a large number of squares. When designing and building the model, it can be regarded as a model composed of countless regular shapes spliced ​​together. The connecting parts need to connect the inner and outer parts so that the door handle can be used normally and play its due functions. Therefore, the design of the connecting part needs to be designed according to the size of the internal and external parts that have been designed. After design calculations, a sketch is drawn, and then UG is used for stretching modeling.

[0040] Step S2, layered slicing: Use Magics21.0 software to save the established 3D solid model. Open Magics21.0 and directly drag the established 3D solid model into the specified position of the software. After importing the part, you can manually adjust the position of the part by translation and rotation. Use the support generation function in the part to automatically add support to the part, and make appropriate adjustments and modifications to the support, perform slicing, and make multiple adjustments to meet the preset effect.

[0041] Step S3, physical manufacturing: After completing the slicing and basic support design using Magics 21.0, use the light-curing printer to input the saved file into the light-curing machine to print the molded part;

[0042] Step S4, post-processing;

[0043] Post-processing includes four steps. In the first step, after the prototype is formed, the workbench rises out of the liquid surface and needs to stay for 5 to 10 minutes before removing the prototype to dry the resin remaining on the surface of the prototype and remove the excess resin wrapped inside the prototype.

[0044] The second step is to immerse the removed molded part in a cleaning solution such as alcohol, brush off the remaining bubbles, and directly remove the prototype from the stencil with a spatula for cleaning;

[0045] The third step is to remove the support structure at the bottom and hollow part of the prototype after the prototype is cleaned. When removing the support, be careful not to scratch the surface of the prototype and its fine structure.

[0046] The fourth step is to clean the prototype again and then place it in a UV oven for secondary curing so that its strength can meet the requirements for use. After the secondary curing is completed, the surface is sprayed with paint.

[0047] The working principle of the present invention is as follows: before printing, liquid resin raw materials are stored in the resin cylinder 606, and the liquid resin raw materials are poured into the resin tank 5. After a printing instruction is issued to the control center 2, the control center 2 controls the light-curing print head 3 and the light-curing printing plate 4 to move upward. At this time, the liquid resin in the resin tank 5 is irradiated and solidified in the light-curing printing plate 4, and the printing operation of the automobile parts is performed;

[0048] When the resin in the resin tank 5 is continuously consumed, the servo motor 607 is started, and the servo motor 607 starts to drive the threaded rod 608 to rotate. When the threaded rod 608 rotates, the moving block 609 drives the sealing plate 610 to move downward. When the sealing plate 610 moves downward, the liquid resin in the bottom end of the resin cylinder 606 is squeezed into the connecting tube 612, and is injected into the resin tank 5 through the bottom end of the connecting tube 612 to replenish the liquid resin.

[0049] Before printing automobile parts, the connection block 706 is not connected to the side air extraction plate 705. At this time, there is no shielding in front of the equipment, which is convenient for pouring resin. The resin is poured in, and the connection block 706 slides into the slide groove of the side air extraction plate 705. At this time, the gas channel 708 in the side air extraction plate 705 and the positive air extraction plate 707 is in a connected state. During printing, the rotating motor 701 starts and drives the blade group 703 to rotate through the rotating shaft 702. When the blade group 703 rotates, the gas is blown out. Therefore, the gas pipes 704 on both sides are simultaneously exhausted. The gas pipe 704 is connected to the side air extraction plate 705. The side air extraction plate 705 is exhausted. Therefore, the side air extraction plate 705 will exhaust the gas emitted by the liquid resin. The positive air extraction plate 707 is connected to the side air extraction plate 705, so the positive air extraction plate 707 synchronously performs exhaust work to improve the gas extraction effect.

[0050] After printing, it is necessary to stop the machine for a while and rotate the threaded sleeve 611 on the side of the connecting block 706. At this time, the resin barrel 606 will move upward relative to the threaded sleeve 611, and the threaded sleeve 611 can be rotated from the side of the resin barrel 606, so that the scale threaded sleeve 611 and the liquid resin remaining in the connecting tube 612 are cleaned, and the liquid resin in the resin barrel 606 will be pushed out by the sealing plate 610. When the next printing work is performed, there will be no liquid resin residue from the previous time. In addition, it should be noted that when replenishing the liquid resin in the resin barrel 606, it is only necessary to connect the threaded sleeve 611 to the resin barrel 606. At this time, the sealing plate 610 is at the bottom of the resin barrel 606. After pouring the liquid resin under the connecting tube 612, the sealing plate 610 moves upward, and the liquid resin under the connecting tube 612 will be automatically drawn into the resin barrel 606.

[0051] Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-curing printing device for automobile parts production, comprising a working base (1), characterized in that: The top of the working base (1) is fixedly connected to a control center (2), the side of the control center (2) is movably connected to a light-curing print head (3), the bottom of the light-curing print head (3) is fixedly connected to a light-curing print plate (4), a resin tank (5) is placed in the middle of the top of the working base (1), the side of the top of the working base (1) close to the control center (2) is fixedly connected to a resin replenishing mechanism (6), and the side of the top of the working base (1) away from the control center (2) is connected to an exhaust mechanism (7); the resin replenishing mechanism (6) includes a resin cylinder (606) filled with liquid resin, The top end of the resin barrel (606) is fixedly connected to a servo motor (607), the bottom end of the servo motor (607) is fixedly connected to a threaded rod (608), the side of the threaded rod (608) is threadedly connected to a moving block (609), the bottom end of the moving block (609) is fixedly connected to a sealing plate (610), the top end of the resin barrel (606) is provided with a limiting groove matched with the moving block (609), and the bottom end of the resin barrel (606) is provided with a liquid groove matched with the sealing plate (610), and liquid resin is placed in the liquid groove of the resin barrel (606).

2. The light-curing printing device for automobile parts production according to claim 1, characterized in that: The bottom end of the resin cylinder (606) is threadedly connected to a threaded sleeve (611), and the bottom end of the threaded sleeve (611) is fixedly connected to a connecting tube (612). The bottom end of the connecting tube (612) contacts the bottom end of the resin tank (5), and the bottom end of the connecting tube (612) is provided with an avoidance groove for liquid flow.

3. The light-curing printing device for automobile parts production according to claim 2, characterized in that: A movable plate (604) is fixedly connected to the side of the resin replenishing mechanism (6), and two limit rods (603) are movably connected inside the movable plate (604). The top ends of the two limit rods (603) are fixedly connected to the limit plate (602), and the sides of the two limit plates (602) are fixedly connected to the support plate (601).

4. The light-curing printing device for automobile parts production according to claim 3 is characterized in that: The sides of the two limit rods (603) are provided with support springs (605), and the support springs (605) are located above the movable plate (604), and the top ends of the support springs (605) are in contact with the bottom ends of the upper limit plates (602), and a distance of two centimeters is left between the bottom ends of the movable plates (604) and the top ends of the lower limit plates (602).

5. The light-curing printing device for automobile parts production according to claim 1, characterized in that: The air extraction mechanism (7) comprises a rotating motor (701) for providing power, a rotating shaft (702) being fixedly connected to a side of the rotating motor (701), a blade group (703) being fixedly connected to a side of the rotating shaft (702) away from the rotating motor (701), the blade group (703) being located in an exhaust hole in a working base (1), and gas pipes (704) being fixedly connected to both sides of the exhaust hole in the working base (1).

6. The light-curing printing device for automobile parts production according to claim 5, characterized in that: The sides of the two gas pipes (704) are fixedly connected with side exhaust plates (705), the sides of the side exhaust plates (705) are provided with sliding grooves adapted to the connecting blocks (706), the sides of the connecting blocks (706) away from the side exhaust plates (705) are fixedly connected with a positive exhaust plate (707), and the bottom ends of the side exhaust plates (705) are fixedly connected with the top ends of the working bases (1).

7. The light-curing printing device for automobile parts production according to claim 6, characterized in that: The side air suction plate (705) and the positive air suction plate (707) are both provided with gas passages (708), and the gas passages (708) in the side air suction plate (705) are connected with the gas passages (708) in the positive air suction plate (707) via the connecting block (706), and the side air suction plate (705) and the positive air suction plate (707) are evacuated via the gas passages (708).

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