Sunken full-automatic light-curing printer

Abstract

In order to solve the problems of the prior art, the present application provides a sunken full-automatic light-curing printer, comprising a control system and a printing section, a taking section and a light-curing section fixed in the support. The displacement mechanism is controlled by the control system to drive the printing substrate mechanism to transfer between the printing section, the taking section and the light-curing section. After accurate positioning analysis, the control system controls the displacement position of the Z-axis displacement mechanism and the displacement position of the printing substrate by controlling the opening / closing and movement state of the displacement mechanism. The present application realizes the integration of printing, taking, cleaning and curing functions of a single printer by the displacement of the printing substrate mechanism between sections, significantly compresses the production line space, and thus realizes the completion of the whole process by one device.

Description

Technical Field

[0001] This invention belongs to the field of additive manufacturing equipment technology, specifically relating to a sinking fully automatic photopolymerization printer. Background Technology

[0002] A photopolymer printer is a 3D printing device based on photopolymerization technology (SLA / DLP / LCD). Photopolymer printers include bottom-mounted printers and top-mounted printers. Bottom-mounted printers use a top-down printing method and require a larger amount of resin. However, because the printing substrate is located below the printed part, the viscosity requirement between the resin and the printing substrate is lower, allowing for a wider range of resins to be used, making them suitable for industrial-grade printing. Currently, bottom-mounted printers commonly suffer from the following problems:

[0003] 1. Currently, after printing, a scraper is typically used to remove the printed part from the printing substrate. Because different resins have varying adhesion to the printing substrate, and existing equipment usually uses a fixed mechanical force for scraping, lower viscosity resins are prone to detaching or flying the printed part, leading to collision damage. Higher viscosity resins are continuously subjected to the scraper force, sometimes causing stress damage at the stress point, and sometimes the printed part is blown away due to internal stress and elastic force at the moment of release, resulting in damage.

[0004] 2. Existing sinking printers typically only include printing and picking up parts. Subsequent cleaning and curing require external robots or manual transfer to corresponding equipment for processing. This results in existing printing production lines needing to include at least: printers, robots, cleaning equipment, curing equipment, etc., leading to long production lines, high hardware costs, and poor centralization. Summary of the Invention

[0005] This invention addresses at least one of the problems existing in the prior art by providing a recessed fully automatic photopolymerization printer, comprising: a control system and a printing section, a part-retrieving section, and a photopolymerization section fixed inside a support. A displacement mechanism, controlled by the control system, moves a printing substrate mechanism between the printing section, the part-retrieving section, and the photopolymerization section.

[0006] The printing section includes a resin tank with an open top and a scraper mechanism. An optical mechanism is located at a corresponding position above the resin tank. The optical mechanism, controlled by a control system, emits a laser beam towards the resin tank.

[0007] The part-retrieving section includes a first blowing and washing mechanism and a part-retrieving slot with an open top. A needle plate is provided inside the part-retrieving slot, and several pins with their tips pointing upwards are arranged on the needle plate. The first blowing and washing mechanism is controlled by a control system to blow and wash the printing component towards the part-retrieving slot.

[0008] The photocuring section includes a cleaning tank and a second blowing mechanism. The cleaning tank is open at the top and equipped with a scraper rinsing mechanism, and the photocuring mechanism is located above the cleaning tank. The second blowing mechanism is controlled by the control system to blow the printed components towards the cleaning tank.

[0009] The printing substrate mechanism includes a Z-axis displacement mechanism, which is controlled by a control system to move the printing substrate vertically up and down. The printing substrate has several ejector pin holes, the number and position of which at least cover the ejector pins.

[0010] After performing precise positioning analysis, the control system controls the displacement position of the Z-axis displacement mechanism by controlling the opening / closing and motion state of the displacement mechanism, thereby controlling the displacement position of the printing substrate (305).

[0011] Furthermore, the Z-axis displacement mechanism includes: a mounting base plate, on which at least one first guide rail is provided in the vertical direction, and a first slider that slides along the first guide rail is fastened to the first guide rail. The first slider is connected to the printing substrate or connected to the printing substrate via an adapter.

[0012] The mounting base plate is provided with a first driving mechanism at the top or bottom of the first guide rail. The first driving mechanism is controlled by the control system and drives a first screw arranged axially along the first guide rail to rotate. A first displacement block is screwed onto the first screw, and the first displacement block is fixedly connected to the first slider or to the adapter.

[0013] Furthermore, the adapter includes: an L-shaped or L-shaped first connecting mechanism, wherein the top end or near the top end of the vertical portion of the first connecting mechanism is fixedly connected to the first slider, and the horizontal portion is fixedly connected to the printing substrate, thereby placing the surface of the printing substrate in a horizontal direction.

[0014] The top or near the top of the vertical part of the first connecting mechanism is fixedly connected to the second connecting mechanism, and the second connecting mechanism is fixedly connected to the first displacement block.

[0015] Furthermore, a first support plate and a second support plate are rotatably connected above and below the first displacement block, respectively. The first support plate and the second support plate are fixedly connected to the mounting base plate.

[0016] Furthermore, the resin tank includes a resin holding tank. The resin holding tank has an open upper end and a printing inner tank that matches the printing substrate. The bottom of the resin holding tank is connected to the inlet end of a resin pump, the outlet end of the resin pump is connected to the inlet end of a resin filter, and the outlet end of the resin filter is connected to the printing inner tank near the top. The resin pump is controlled by a control system.

[0017] Furthermore, the resin pump includes a resin storage tank and an electrically controlled pump body. The inlet end of the resin storage tank is connected to a resin holding tank, and the outlet end of the resin storage tank is connected to a resin filter via the electrically controlled pump body. The electrically controlled pump body is controlled by a control system.

[0018] Furthermore, the resin holding tank has a first handle on the side wall facing the user, the bottom of the resin holding tank is fixedly connected to a second slider, the second slider is fastened to a second slide rail and slides back and forth along the second slide rail, and the second slide rail is fixed to the bracket.

[0019] The outlet end of the resin filter is connected to the printing inner tank via a lever quick connector.

[0020] The bottom of the resin holding tank is connected to the inlet of the resin pump via a hose.

[0021] Furthermore, a non-contact liquid level sensor is provided above the resin tank to detect the resin level in the resin tank, and the signal output terminal of the non-contact liquid level sensor is connected to the control system signal.

[0022] Furthermore, the scraper mechanism includes a second drive mechanism controlled by a control system. Its output end is fixedly connected to a second screw. The second screw is arranged along the horizontal longitudinal or horizontal transverse direction of the resin tank and is screwed with a scraper connecting plate arranged along the cross-sectional direction of the second screw. The scraper connecting plate extends to the opposite side of the resin tank relative to the second screw, and a resin scraper is fixed to the bottom of the scraper connecting plate.

[0023] Furthermore, the portion of the scraper connecting plate outside the resin tank is fixedly connected to the third slider, which is engaged with and slides along the third slide rail. The third slide rail is axially aligned with the second screw.

[0024] The outer shell of the second drive mechanism is connected to a third support plate, which is detachably and fixedly connected to the first mounting slot of the bracket.

[0025] Furthermore, the part-retrieving slot is located above one side of the resin tank, and the bottom of the part-retrieving slot is an inclined surface facing the resin tank, with the side facing the resin tank being open. A needle plate support block is provided at the bottom of the part-retrieving slot. The needle plate is placed above the needle plate support block and supported in a horizontal position.

[0026] Furthermore, the inside of the part-retrieving slot is divided into a part-retrieving cavity and a component cavity by a partition. The needle plate support block is set on the bottom surface of the part-retrieving cavity, and the needle plate is placed in the part-retrieving cavity. The position and size of the component cavity are matched with the Z-axis displacement mechanism. The bottom of the component cavity is an inclined surface facing the resin tank, and the side facing the resin tank is open.

[0027] The partition plate has a groove at the position where the Z-axis displacement mechanism connects to the printing substrate, which matches the groove of the connector.

[0028] Furthermore, the first blowing mechanism includes: an air tank, an electrically controlled air pump, and a first nozzle. The air tank is detachably and fixedly connected to the bracket, and the air outlet of the air tank is connected to the inlet of the electrically controlled air pump. The electrically controlled air pump is controlled by a control system, and its outlet is connected to the first nozzle, with the air outlet direction of the first nozzle facing the needle plate.

[0029] Furthermore, the second blowing and washing mechanism includes an electrically controlled three-way valve, a second nozzle, and a nozzle protective cover. The electrically controlled three-way valve is installed at the air outlet of the electrically controlled air pump and is controlled by the control system. One of its air outlets is connected to the first nozzle, and the other air outlet is connected to the second nozzle. The second nozzle is installed inside the nozzle protective cover, with the air outlet direction facing the cleaning tank. The nozzle protective cover is fixed to one side of the cleaning tank, or to another mechanism on one side of the cleaning tank, or to a bracket on one side of the cleaning tank. The nozzle protective cover has an air outlet hole on the side wall in the air outlet direction of the second nozzle, and an electrically controlled heating mesh is installed over the air outlet hole.

[0030] Furthermore, the bottom of the cleaning tank is connected to the cleaning fluid filter, the outlet of the cleaning fluid filter is located in the cleaning fluid storage tank, and the bottom of the cleaning fluid storage tank is connected to the cleaning tank through an electronically controlled liquid pump, which is controlled by the control system.

[0031] The cleaning fluid filter includes: an outlet pipe, a filter bucket, and a filter bucket cover. One end of the outlet pipe is connected to the bottom of the cleaning tank, and the other end is provided with a first external thread. The side walls of the filter bucket are all filter screens, and a connecting pipe is provided at the top. The connecting pipe is provided with a first internal thread that matches the first external thread. The bottom of the filter bucket has a second external thread and is open. The cover of the filter bucket is a filter screen that matches the side walls of the filter bucket, and a second internal thread that matches the second external thread is provided on the side facing the filter bucket.

[0032] Furthermore, the scraper rinsing mechanism includes a third drive mechanism controlled by a control system. Its output end is fixedly connected to a third screw. The third screw is arranged along the horizontal longitudinal or horizontal transverse direction of the cleaning tank and is screwed with a scraper mechanism arranged along the cross-sectional direction of the third screw. The scraper mechanism extends to the opposite side of the cleaning tank relative to the third screw, and the bottom of the scraper mechanism has a scraper blade inclined away from the third drive mechanism.

[0033] Furthermore, the portion of the shovel mechanism outside the cleaning tank is fixedly connected to the fourth slider, which is fastened to the fourth slide rail and slides along the fourth slide rail. The fourth slide rail is axially arranged along the third screw.

[0034] The outer shell of the third drive mechanism is connected to a fourth support plate, and the fourth support plate is detachably and fixedly connected to the second mounting slot of the bracket.

[0035] Furthermore, the displacement mechanism includes: at least one drive gear, which is driven by a fourth drive device controlled by a control system. A toothed belt is teethed onto the drive gear, and a printing substrate connecting block is detachably fixed to the toothed belt. The printing substrate connecting block is detachably fixedly connected to the printing substrate mechanism.

[0036] Furthermore, the support has a fifth slide rail on at least one side of the toothed belt along the direction of belt movement. A fifth slider is fastened to the fifth slide rail, and the fifth slider is detachably and fixedly connected to the printing substrate mechanism.

[0037] Furthermore, the displacement mechanism also includes at least one driven wheel.

[0038] Furthermore, at least one of the resin tank, the part-retrieving tank, and the cleaning tank is provided with a light receiving plate on the side of the part-retrieving tank facing the displacement mechanism, and a laser emitter is provided on the Z-axis displacement mechanism or the displacement mechanism at a position corresponding to the light receiving plate.

[0039] After receiving information from the optical receiving board, the control system performs precise positioning analysis and then controls the opening / closing and movement speed of the displacement mechanism to control the displacement position of the Z-axis displacement mechanism, thereby controlling the displacement position of the printing substrate.

[0040] Furthermore, several photoelectric sensors are arranged in a matrix on the side of the light receiving plate facing the laser emitter, and the photoelectric sensors are connected to the control system for data transmission.

[0041] The control system determines the location of the triggered photoelectric sensor based on the serial number of the received photoelectric sensor and performs precise positioning analysis.

[0042] The precise positioning analysis includes the following steps:

[0043] Step 1: Determine the work section to which the currently triggered photoelectric sensor belongs based on the location of the triggered photoelectric sensor.

[0044] Step 2: Obtain the corresponding target control center point O based on the location confirmed in Step 1. m , where m is the section number.

[0045] Step 3: The triggered photoelectric sensor points to the target control center point O. m vector A mn , where n is the natural number sequentially numbered to trigger the photoelectric sensor signal.

[0046] Step 4: Based on the vector A obtained in Step 3 mn Decomposed into X-axis displacement distance L xn and displacement direction B xfn Z-axis displacement distance L zn and displacement direction C zhn , where f is the preset representative value of the X-axis movement direction and h is the preset representative value of the Z-axis movement direction.

[0047] Step 5: Based on the X-axis displacement distance L xn and displacement direction B xfn The control displacement mechanism drives the printing substrate to move in the specified direction L xn According to the Z-axis displacement distance L zn and displacement direction C zhn The Z-axis displacement mechanism controls the movement of the printing substrate in the specified direction. zn .

[0048] Step 6: After Step 5 is completed, repeat Steps 3 to 5 until the target control center point O is reached. m The photoelectric sensor is continuously triggered.

[0049] Furthermore, when a light receiving plate is installed on the resin tank or cleaning tank, its target control center point O m Surrounding the target control center point O m A preset triggering area is formed around the center point; when a photoelectric sensor located within the preset triggering area is triggered, it is considered as the target control center point O. m Triggered.

[0050] Furthermore, when the target control center point O m After the photoelectric sensor is continuously triggered for a preset time, it stops performing precise positioning analysis and resets the control parameters obtained from the analysis.

[0051] When the displacement mechanism is activated and drives the printing substrate to the next stage, the positioning accuracy analysis corresponding to the next stage is initiated.

[0052] This invention has at least one of the following advantages:

[0053] 1. This invention achieves integrated printing, part picking, cleaning, and curing functions in a single printer by using a displacement mechanism to move the printing substrate mechanism between different sections, significantly reducing production line space and enabling one device to complete the entire process.

[0054] 2. This invention uses a specific part-retrieving component to retrieve printed parts, effectively overcoming the problems of existing shovel-type part-retrieving methods and effectively ensuring the yield rate of printed parts. Attached Figure Description

[0055] Figure 1 The diagram shown is a schematic diagram of the main structure of the sunken fully automatic photopolymer printer of the present invention.

[0056] Figure 2 The diagram shown is a structural schematic of the printing section of this invention.

[0057] Figure 3 The diagram shown is a schematic representation of the printing substrate mechanism of the present invention.

[0058] Figure 4 The diagram shown is a schematic diagram of the part-retrieving groove of the present invention.

[0059] Figure 5 The diagram shown is a schematic representation of the structure of the resin tank of the present invention.

[0060] Figure 6 As shown Figure 5 A magnified structural diagram of part A in the diagram.

[0061] Figure 7 The diagram shown is a structural schematic of the displacement mechanism of the present invention.

[0062] Figure 8 The diagram shown is a structural schematic of the scraper mechanism of the present invention.

[0063] Figure 9 The diagram shown is a structural schematic of the shovel flushing mechanism of the present invention.

[0064] Figure 10 The diagram shown is a structural schematic of the cleaning fluid filter of the present invention.

[0065] Figure 11 The diagram shows the distribution of the photoelectric sensor of the present invention on the light receiving plate.

[0066] Figure 12 The diagram shows the corresponding structure of the optical receiver 15 and the laser transmitter 14 of the present invention. Detailed Implementation

[0067] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0068] Please note that the terms "above", "below", "left", "right", "top", "top", "bottom", "bottom", etc., used in this invention to describe positional relationships do not represent the absolute positional relationship between modules / components / assemblies / parts / components, but rather the relative positional relationship between modules / components / assemblies / parts / components.

[0069] Example 1

[0070] A type of recessed fully automatic photopolymer printer, such as Figure 1 As shown, it includes: a control system and a printing section, a part-retrieving section, and a photocuring section fixed inside the support 1. The displacement mechanism 9, controlled by the control system, moves the printing substrate mechanism 3 between the printing section, the part-retrieving section, and the photocuring section.

[0071] The printing section includes a resin tank 4, the top of which is open and equipped with a scraper mechanism 10. An optical mechanism 2 is located at a corresponding position above the resin tank 4. The optical mechanism 2 is controlled by the control system to emit laser light towards the resin tank 4.

[0072] The part-retrieving section includes: a first blowing and washing mechanism 12 and a part-retrieving slot 5 with an open top. For example... Figure 4 As shown, the part-taking slot 5 is provided with a needle plate 502, and several pins 5021 with their tips pointing upwards are arranged on the needle plate 502. The first blowing and washing mechanism 12 is controlled by the control system to blow and wash the printing component in the direction of the part-taking slot 5.

[0073] The photocuring section includes a cleaning tank 6 and a second blowing mechanism 13. The upper end of the cleaning tank 6 is open and equipped with a scraper rinsing mechanism 11, and a photocuring mechanism 8 is located above the cleaning tank 6. The second blowing mechanism 13 is controlled by the control system to blow and clean the printed components towards the cleaning tank 6.

[0074] like Figure 3 As shown, the printing substrate mechanism 3 includes a Z-axis displacement mechanism, which is controlled by the control system to drive the printing substrate 305 to move up and down in the vertical direction. The printing substrate 305 has several ejector pin holes 3051, the number and position of which at least cover the ejector pins 5021.

[0075] After performing precise positioning analysis, the control system controls the displacement position of the Z-axis displacement mechanism by controlling the opening / closing and movement state of the displacement mechanism 9, thereby controlling the displacement position of the printing substrate 305.

[0076] The working process of this invention is as follows:

[0077] The control system controls the displacement mechanism 9 to move the printing substrate mechanism 3 to the printing section, and based on precise positioning analysis, further moves the printing substrate mechanism 3 to a preset position above the resin tank 4. Then, the control system controls the Z-axis displacement mechanism to immerse the printing substrate 305 into the resin tank 4, so that the resin inside the resin tank 4 just submerges the upper side surface of the printing substrate 305. The scraper mechanism 10 is controlled to scrape the resin in the resin tank 4 onto the upper side surface of the printing substrate 305.

[0078] (2) The control system sends printing information to the optical mechanism 2. The optical mechanism 2 emits a laser to the upper surface of the printing substrate 305 according to the printing information. The resin immersed in the upper surface of the printing substrate 305 solidifies under the action of the laser. After the optical mechanism 2 drives the laser to shift and complete the printing of this layer, the control system controls the Z-axis displacement mechanism to move the printing substrate 305 downward by a preset unit distance, so that the resin in the resin tank 4 just immerses the printing layer. Then, the scraper mechanism 10 is controlled to scrape the resin in the resin tank 4 to the upper side of the printing layer.

[0079] The above printing-lowering-smoothing resin action is repeated until the component printing is complete. Then, the control system controls the Z-axis displacement mechanism to move the printing substrate 305 upward until it is completely detached from the resin tank 4. The above printing-lowering-printing process of this invention can be achieved based on conventional control programs.

[0080] (3) The control system controls the displacement mechanism 9 to move the printing substrate mechanism 3 to the picking section, and based on the precise positioning analysis, controls the displacement mechanism 9 to further move the printing substrate mechanism 3 to a preset position above the needle plate 502 of the picking slot 5, so that the ejector pin 5021 is aligned with the ejector pin hole 3051 of the printing substrate 305.

[0081] After the ejector pin 5021 is aligned with the ejector pin hole 3051, the control system drives the printing substrate 305 to move downward through the Z-axis displacement mechanism until the top of the ejector pin 5021 passes through the ejector pin hole 3051 and pushes the printed component away from the printing substrate 305, thereby completing the pre-removal.

[0082] (4) The control system drives the printing substrate 305 to move upward through the Z-axis displacement mechanism until the ejector pin hole 3051 and ejector pin 5021 are completely separated. Then, the control displacement mechanism 9 drives the printing substrate mechanism 3 to move to the cleaning tank 6 of the photocuring section. Based on the precise positioning analysis, the control displacement mechanism 9 further drives the printing substrate mechanism 3 to move to the preset position above the cleaning tank 6.

[0083] (5) The control system moves the printing substrate 305 downward through the Z-axis displacement mechanism, so that the printed component is completely immersed in the cleaning solution in the cleaning tank 6, and waits for a preset time. Then, the Z-axis displacement mechanism moves the printing substrate 305 upward until the printed component is completely removed from the cleaning solution. At this time, the second blowing mechanism 13 is activated to blow the cleaning solution dry.

[0084] Repeat the above cleaning-drying process several times to clean the residual resin liquid on the surface of the printed component. This will prevent the residual resin from curing onto the printed component during the subsequent curing stage, which could cause errors in the printed structure or insufficient precision.

[0085] After cleaning, the control system moves the printing substrate 305 upwards via the Z-axis displacement mechanism until the printed component is completely removed from the cleaning solution, and then activates the photocuring mechanism 8, which is typically an ultraviolet (UV) photocuring device. The printed component undergoes final curing and shaping under the radiation emitted by the photocuring mechanism 8.

[0086] The control system moves the printing substrate 305 to a position where its upper side surface is flush with the bottom surface of the scraper of the scraper rinsing mechanism 11 via the Z-axis displacement mechanism. The scraper rinsing mechanism 11 is then activated, and the scraper pushes the solidified component out of the printing substrate 305 to an external storage mechanism or finished product transfer mechanism. Afterward, the scraper resets, and its reciprocating motion scrapes the upper side surface of the printing substrate 305 to remove any remaining solidified resin, keeping the upper side surface of the printing substrate 305 clean and preventing residual resin from affecting the next print.

[0087] Since the present invention completes the separation of the printed component from the printing substrate 305 in the component removal section, when using a scraper to push the printed component, there will be no problems such as damage caused by the printed component sticking to the printing substrate 305.

[0088] This invention achieves integrated printing, part retrieval, cleaning, and curing functions in a single printer by using a displacement mechanism to move the printing substrate mechanism between different stages. This significantly reduces production line space, allowing a single device to complete the entire process. Furthermore, this invention employs a specific part retrieval component to effectively overcome the problems associated with existing scraper-based part retrieval methods, thus ensuring a high yield rate for retrieved printed parts.

[0089] Example 2

[0090] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 3 As shown, the Z-axis displacement mechanism includes: a mounting base 301, on which at least one first guide rail 302 is provided in the vertical direction, and a first slider 303 that slides along the first guide rail 302 is fastened to the first guide rail 302. The first slider 303 is connected to the printing substrate 305 or connected to the printing substrate 305 through an adapter.

[0091] The mounting base plate 301 is provided with a first driving mechanism 306 at the top or bottom of the first guide rail 302. The first driving mechanism 306 is controlled by the control system and drives the first screw 308, which is arranged axially along the first guide rail 302, to rotate. A first displacement block 310 is screwed onto the first screw 308. The first displacement block 310 is fixedly connected to the first slider 303 or to the adapter.

[0092] The first drive mechanism 306 is preferably a servo motor or a stepper motor. In this case, the first drive mechanism 306 is controlled to drive the first screw 308 to rotate, so that the first displacement block 310 screwed to the first screw 308 moves up and down along the first guide rail 302 under the restriction of the first slider 303, thereby driving the printing substrate 305 to move up and down through the first slider 303 or the adapter.

[0093] Example 3

[0094] Based on the sunken fully automatic photopolymerization printer of Example 2, such as Figure 3 As shown, the adapter includes an L-shaped or L-shaped first connecting mechanism 304, the top end or near the top end of the vertical portion of the first connecting mechanism 304 is fixedly connected to the first slider 303, and the horizontal portion is fixedly connected to the printing substrate 305, so that the surface of the printing substrate 305 is in the horizontal direction.

[0095] The top or near the top of the vertical portion of the first connecting mechanism 304 is fixedly connected to the second connecting mechanism 311, and the second connecting mechanism 311 is fixedly connected to the first displacement block 310.

[0096] This arrangement allows the printing substrate 305 to be positioned lower relative to the mounting substrate 301, the first drive mechanism 306, and other mechanisms. This is because during the printing process, the printing substrate 305 inevitably needs to be immersed in the resin solution, causing the resin solution to adhere to the printing substrate 305 and the components connecting it. This can easily lead to resin waste and increase the workload of cleaning excess resin from the components. By connecting the printing substrate 305 via an adapter, the position of the printing substrate 305 relative to the displacement components (drive device, screw, slider, etc.) can be adjusted, thereby minimizing the number of components immersed in the resin solution during printing and reducing resin waste.

[0097] Example 4

[0098] Based on the sunken fully automatic photopolymerization printer of Example 2, such as Figure 3 As shown, the first screw 308 is rotatably connected to a first support plate 307 and a second support plate 309 above and below the first displacement block 310, respectively. The first support plate 307 and the second support plate 309 are fixedly connected to the mounting base plate 301. Specifically, an exemplary connection method could be that the plates of the first support plate 307 and the second support plate 309 are fixedly connected to the mounting base plate 301, and bearings are installed on the plates of the first support plate 307 and the second support plate 309 at positions corresponding to the first screw 308 and fixed to the outer rings of the bearings. The first screw 308 is fixed to the inner rings of the bearings on the first support plate 307 and the second support plate 309, respectively.

[0099] This design serves two purposes: firstly, it stabilizes the installation position of the first screw 308, preventing obstruction of mechanism displacement due to screw misalignment; secondly, it distributes the force on the screw, reducing the possibility of screw breakage due to excessive torque.

[0100] Example 5

[0101] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 5 As shown, the resin tank 4 includes a resin holding tank 402. The resin holding tank 402 has an open upper end and a printing inner tank 401 that matches the printing substrate 305. The bottom of the resin holding tank 402 is connected to the inlet end of the resin pump 404, the outlet end of the resin pump 404 is connected to the inlet end of the resin filter 405, and the outlet end of the resin filter 405 is connected to the printing inner tank 401 near the top. The resin pump 404 is controlled by a control system.

[0102] In existing recessed photopolymer printers, the resin tank is typically an open tank. However, during printing, the printing substrate 305 needs to continuously sink, which easily leads to resin overflow. Overflowing resin not only wastes resin but also damages the equipment and can cause burns. Current solutions often reduce the amount of resin in the tank and continuously replenish it during printing. This requires a large capacity redundancy in the resin tank, and the operation is complex, necessitating precise monitoring of the resin level to ensure timely replenishment. Otherwise, insufficient resin coverage can cause structural defects in the printed part.

[0103] This invention solves this technical problem by using a double-layered resin tank design. First, a sufficient amount of resin liquid is filled into the printing inner tank 401. During printing, overflowing resin liquid flows into the interlayer between the resin holding tank 402 and the printing inner tank 401. The resin pump 404 periodically starts to extract the resin liquid from the interlayer, filters it through the resin filter 405, and then pumps it back into the printing inner tank 401 as replenishment resin liquid. This design eliminates the problem of resin liquid overflow, thus avoiding the need for redundant resin tank capacity design. Overflowing resin liquid can also be used as replenishment resin liquid, preventing resin waste or potential damage to equipment and burns to personnel.

[0104] Example 6

[0105] Based on the submersible fully automatic photopolymer printer of Embodiment 5, the resin pump 404 includes a resin storage tank and an electrically controlled pump body. The inlet end of the resin storage tank is connected to the resin holding tank 402, and the outlet end of the resin storage tank is connected to the resin filter 405 through the electrically controlled pump body. The electrically controlled pump body is controlled by a control system.

[0106] This setup allows the resin liquid in the interlayer to be extracted and temporarily stored in a sealed resin storage tank, preventing the resin liquid from being exposed to the air for a long time, which could cause problems such as odor dispersion and resin liquid coagulation.

[0107] Example 7

[0108] Based on the sunken fully automatic photopolymer printer of Embodiment 5, the resin holding tank 402 is provided with a first handle on the side wall facing the user. The bottom of the resin holding tank 402 is fixedly connected to the second slider 403. The second slider 403 is fastened to the second slide rail 406 and slides back and forth along the second slide rail 406. The second slide rail 406 is fixed to the bracket 1.

[0109] The outlet end of the resin filter 405 is connected to the resin container 402 via a lever quick connector 407.

[0110] The bottom of the resin holding tank 402 is connected to the inlet end of the resin pump 404 via a hose.

[0111] This setup allows for disconnection of the quick-connect lever 407 from the printing chamber 401 or the outlet of the resin filter 405 when needed, such as during resin tank 402 maintenance, by pulling the lever of the quick-connect lever 407. Afterward, the resin tank 402 can be pulled out using the first handle, at which point the second slider 403 supports and restricts the movement of the resin tank 402 along the second slide rail 406. Conversely, the resin tank 402 can be reset, reconnecting the outlet of the resin filter 405 to the printing chamber 401 via the quick-connect lever 407.

[0112] Example 8

[0113] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 2 As shown, a non-contact liquid level sensor 16 for detecting the resin level in the resin tank 4 is provided above the resin tank 4, and the signal output terminal of the non-contact liquid level sensor 16 is connected to the control system signal.

[0114] The added non-contact liquid level sensor 16 can be used to detect the resin level in the resin tank 4. When the resin level in the resin tank 4 is too low, it prompts the user to add resin or controls the external resin replenishment device to add resin to the resin tank 4 through the control system. The external resin replenishment device can be, for example, a device consisting of a resin storage tank, a resin pump, an electrical control switch, and pipelines connecting the above structures.

[0115] Example 9

[0116] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 7As shown, the scraper mechanism 10 includes a second drive mechanism 1001, which is controlled by a control system. Its output end is fixedly connected to a second screw 1002. The second screw 1002 is arranged along the horizontal longitudinal or horizontal transverse direction of the resin tank 4 and is screwed with a scraper connecting plate 1003 arranged along the cross-sectional direction of the second screw 1002. The scraper connecting plate 1003 extends to the opposite side of the resin tank 4 relative to the second screw 1002, and a resin scraper 1004 is fixed to the bottom of the scraper connecting plate 1003. The second drive mechanism 1001 can be a servo motor or a stepper motor.

[0117] When a smoothing process is required, the second drive mechanism 1001 is controlled by the control system to drive the second screw 1002 to rotate in the forward or reverse direction, thereby causing the scraper connecting plate 1003 screwed to the second screw 1002 to reciprocate along the axis of the second screw 1002, which in turn drives the resin scraper 1004 to scrape the resin in the resin tank 4 onto the printing substrate 305 or the surface of the printing layer, and smooths the resin layer in the reciprocating motion.

[0118] Resin itself has a certain viscosity. Although gravity can allow the resin to flow naturally and cover the printing substrate 305 or the surface of the printing layer, this natural flow is slow and will seriously affect printing efficiency. Furthermore, it may result in missed spots, where the resin is not completely covered or covers only a small amount, causing uneven printing or printing defects. By using the scraper mechanism 10 of this invention for scraping, the resin can be quickly and evenly coated onto the printing substrate 305 or the surface of the printing layer, improving printing efficiency while ensuring a more uniform resin coating.

[0119] Example 10

[0120] Based on the sunken fully automatic photopolymerization printer of Example 9, such as Figure 7 As shown, the portion of the scraper connecting plate 1003 outside the resin tank 4 is fixedly connected to the third slider 1006. The third slider 1006 is fastened to the third slide rail 1005 and slides along the third slide rail 1005. The third slide rail 1005 is axially arranged along the second screw 1002.

[0121] The outer shell of the second drive mechanism 1001 is connected to a third support plate 1007, and the third support plate 1007 is detachably and fixedly connected to the first mounting groove 1008 of the bracket 1.

[0122] This design allows the third slider 1006 to provide support for the squeegee connecting plate 1003 as it reciprocates along the axis of the second screw 1002, reducing the stress on the squeegee connecting plate 1003. Simultaneously, since the third slider 1006 can only slide along the third slide rail 1005, it further limits the movement of the squeegee connecting plate 1003, ensuring that it can only reciprocate along the axis of the second screw 1002. This prevents the squeegee connecting plate 1003 from failing to reciprocate along the axis of the second screw 1002 when the second screw 1002 rotates, instead rotating with the second screw 1002, which could damage the printing components or other mechanisms.

[0123] Example 11

[0124] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 2 and Figure 4 As shown, the part-retrieving slot 5 is located above one side of the resin tank 4. The bottom of the part-retrieving slot 5 is an inclined surface facing the resin tank 4, and the side facing the resin tank 4 is open. A needle plate support block 506 is provided at the bottom of the part-retrieving slot 5. The needle plate 502 is placed above the needle plate support block 506 and supported in a horizontal state.

[0125] At this time, when the printing substrate 305 moves to the needle plate 502 and performs the picking action, the resin adhering to the printing substrate 305 will flow along the pin hole 3051 to the bottom slope of the picking groove 5, and further flow along the bottom slope of the picking groove 5 to the top of the opening of the resin tank 4, and finally flow back into the resin tank 4, realizing the recycling and reuse of the resin liquid.

[0126] Existing technologies use a scraper to remove parts, which is a slow process. This affects overall printing efficiency and makes it difficult to recycle and reuse the residual resin before it has solidified, resulting in a high resin waste rate and increased printing and waste disposal costs.

[0127] Example 12

[0128] Based on the sunken fully automatic photopolymerization printer of Example 11, such as Figure 4 As shown, the inside of the part-retrieving slot 5 is divided into a part-retrieving cavity and a component cavity by a partition 503. The needle plate support block 506 is disposed on the bottom surface of the part-retrieving cavity, and the needle plate 502 is placed in the part-retrieving cavity. The position and size of the component cavity are matched with the Z-axis displacement mechanism. The bottom of the component cavity is an inclined surface facing the resin tank 4, and the side facing the resin tank 4 is open.

[0129] The partition 503 has a groove 504 at the position of the Z-axis displacement mechanism and the printing substrate 305 that matches the connector.

[0130] During the printing process, the Z-axis displacement mechanism inevitably accumulates resin on the components connecting to the printing substrate 305. The partition 503 allows for component retrieval and resin recovery from the printing substrate 305 in the component retrieval cavity, and resin recovery from the components connecting to the printing substrate 305 in the component cavity. This maximizes the recycling and reuse of residual resin, improving resin utilization. Furthermore, it reduces the amount of residual resin carried to other components by the Z-axis displacement mechanism 9 when moving between sections, thus reducing the frequency of resin cleaning.

[0131] According to one embodiment of the present invention, the part-retrieving slot 501 is provided with a barrier 505 extending beyond the top of the ejector pin 502 around the pin plate 502, and the area enclosed by the barrier 505 matches the printing substrate 305. This arrangement can assist in fixing and positioning the printing substrate 305 during part retrieval.

[0132] Example 13

[0133] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 1 As shown, the first blowing and washing mechanism 12 includes: an air tank 1201, an electrically controlled air pump 1202, and a first nozzle 1203. The air tank 1201 is detachably and fixedly connected to the bracket 1, and the air outlet of the air tank 1201 is connected to the inlet of the electrically controlled air pump 1202. The electrically controlled air pump 1202 is controlled by a control system, and its outlet is connected to the first nozzle 1203. The air outlet direction of the first nozzle 1203 is towards the needle plate 502.

[0134] At this time, before the part is picked up, the control system controls the start of the electronically controlled air pump 1202, so that the gas stored in the air tank 1201 is blown out from the first nozzle 1203 to drive the airflow to rinse the printing component, so that the residual resin liquid is separated from the printing component and the printing substrate 305 as much as possible.

[0135] Example 14

[0136] Based on the submerged fully automatic photopolymer printer of Embodiment 13, the second blowing mechanism 13 includes an electrically controlled three-way valve, a second nozzle, and a nozzle protective cover. The electrically controlled three-way valve is installed at the outlet of the electrically controlled air pump 1202 and is controlled by the control system. One of its outlets is connected to the first nozzle 1203, and the other outlet is connected to the second nozzle. The second nozzle is installed inside the nozzle protective cover, with its air outlet direction facing the cleaning tank 6. The nozzle protective cover is fixed to one side of the cleaning tank 6, or to another mechanism on one side of the cleaning tank 6, or to a bracket 1 on one side of the cleaning tank 6. The nozzle protective cover has an air outlet hole on the side wall in the direction of the second nozzle's air outlet, and an electrically controlled heating mesh is installed over the air outlet hole.

[0137] At this time, when the printed component needs to be cleaned in the part-removal section, the control system controls the electronically controlled three-way valve to connect the first nozzle 1203 and controls the electronically controlled air pump 1202 to blow out a high-velocity airflow. After the printed component completes the cleaning action in the photocuring stage, the control system controls the electronically controlled three-way valve to connect the second nozzle and controls the electronically controlled air pump 1202 to blow out a low-velocity airflow, cleaning the cleaning fluid off the surface of the component while avoiding blowing the component away from the printing substrate 305, so as to avoid the cleaning fluid affecting the subsequent photocuring action.

[0138] The electrically controlled heating grid can be activated as needed to blow out hot air, making it easier to clean the cleaning fluid.

[0139] Example 15

[0140] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 1 As shown, the bottom of the cleaning tank 6 is connected to the cleaning fluid filter, the outlet of the cleaning fluid filter is located in the cleaning fluid storage tank 7, and the bottom of the cleaning fluid storage tank 7 is connected to the cleaning tank 6 through an electronically controlled liquid pump, which is controlled by the control system.

[0141] like Figure 10 As shown, the cleaning fluid filter includes: an outlet pipe 701, a filter tank 702, and a filter tank cover 703. One end of the outlet pipe 701 is connected to the bottom of the cleaning tank 6, and the other end is provided with a first external connecting thread 7011. The side walls of the filter tank 702 are all filter screens, and a connecting pipe is provided at its top. The connecting pipe is provided with a first internal connecting thread 7021 that matches the first external connecting thread 7011. The bottom of the filter tank 702 has a second external connecting thread 7022 and is open. The cover of the filter tank cover 703 is a filter screen that matches the side walls of the filter tank 702, and a second internal connecting thread 7031 that matches the second external connecting thread 7022 is provided on the side facing the filter tank 702.

[0142] At this point, the cleaning solution from cleaning tank 6 enters filter tank 702 through outlet pipe 701, and then flows into cleaning solution storage tank 7 through filter mesh on filter tank 702. The solidified resin impurities are retained inside filter tank 702. The filtered cleaning solution can be transferred back to cleaning tank 6 for further cleaning as needed.

[0143] When there are too many impurities inside the filter canister 702, the filter canister 702 can be rotated to loosen the first connecting external thread and the first connecting internal thread 7021, thereby removing the filter canister 702 from the outlet pipe 701. Then, rotate the filter canister cap 703 to unscrew it from the filter canister 702, allowing the impurities inside the filter canister 702 to be poured out. Rinse the filter canister 702 in either the forward or reverse direction to clear the filter screen mesh. Finally, tighten the filter canister cap 703, align the first connecting external thread with the first connecting internal thread 7021, and tighten it to restore the filter canister 702 to its connection with the outlet pipe 701. This setup facilitates the removal and cleaning of the filter canister 702.

[0144] Example 16

[0145] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 9 As shown, the scraper rinsing mechanism 11 includes: a third drive mechanism 1101, which is controlled by a control system. Its output end is fixedly connected to a third screw 1102. The third screw 1102 is arranged along the horizontal longitudinal or horizontal transverse direction of the cleaning tank 6 and is screwed with a scraper mechanism 1106 arranged along the cross-sectional direction of the third screw 1102. The scraper mechanism 1106 extends to the opposite side of the cleaning tank 6 relative to the third screw 1102, and the bottom of the scraper mechanism 1106 is a scraper blade inclined away from the third drive mechanism 1101.

[0146] At this point, after the cleaning and curing of the printed components are completed, the control system controls the Z-axis displacement mechanism to move the printing substrate 305 to a preset height position. Then, it controls the third drive mechanism 1101 to start, causing the third screw 1102 to rotate and further drive the scraper mechanism 1106 to move axially along the third screw 1102. The scraper blade of the scraper mechanism 1106 then scrapes across the top surface of the printing substrate 305, pushing the cleaned and cured printed components out of the printing substrate 305 into the component collection device (external or added storage mechanism), and simultaneously scraping and cleaning the top surface of the printing substrate 305 to remove residual resin impurities and prevent them from affecting subsequent printing.

[0147] After completing the above actions, the control system controls the third drive mechanism 1101 to reverse, so that the scraper mechanism 1106 returns to its initial position, thereby enabling the displacement mechanism 9 to drive the Z-axis displacement mechanism and the printing substrate 305 back to the printing section position for the next printing action.

[0148] Example 17

[0149] Based on the sunken fully automatic photopolymerization printer of Example 16, such as Figure 9 As shown, the portion of the scraper mechanism 1106 outside the cleaning tank 6 is fixedly connected to the fourth slider 1104. The fourth slider 1104 is fastened to the fourth slide rail 1105 and slides along the fourth slide rail 1105. The fourth slide rail 1105 is axially arranged along the third screw 1102.

[0150] The outer shell of the third drive mechanism 1101 is connected to a fourth support plate 1107, and the fourth support plate 1107 is detachably and fixedly connected to the second mounting groove 1108 of the bracket 1.

[0151] At this time, when the blade mechanism 1106 moves axially along the third screw 1102, the blade mechanism 1106 will drive the fourth slider 1104 to move along the fourth slide rail 1105. At this time, the fourth slider 1104 can support the blade mechanism 1106 and prevent the blade mechanism 1106 from rotating along the third screw 1102.

[0152] Example 18

[0153] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 7 As shown, the displacement mechanism 9 includes at least one drive gear 901, which is driven by a fourth drive device controlled by a control system. A toothed belt 902 is connected to the drive gear 901, and a printing substrate connecting block 903 is detachably fixed to the toothed belt 902. The printing substrate connecting block 903 is detachably fixed to the printing substrate mechanism 3.

[0154] At this time, the control system drives the active gear 901 to rotate by controlling the rotation of the fourth drive device, and drives the toothed belt 902 to move, which further causes the connecting block 903 connected to the toothed belt 902 to move synchronously, thereby driving the printing substrate mechanism 3 to move between each section.

[0155] Example 19

[0156] Based on the sunken fully automatic photopolymerization printer of Example 18, such as Figure 7As shown, the bracket 1 has a fifth slide rail 904 on at least one side of the toothed belt 902 along the direction of movement of the toothed belt 902. A fifth slider 905 is fastened to the fifth slide rail 904, and the fifth slider 905 is detachably and fixedly connected to the printing substrate mechanism 3.

[0157] Generally speaking, the printing substrate mechanism 3 has a large mass. Since the toothed belt 902 is generally a flexible structure, when the load is borne by only the drive gear 901 and the toothed belt 902, a large number of densely arranged drive gears 901 are required. Otherwise, it is easy to exceed the load-bearing capacity of the toothed belt 902, which significantly increases the difficulty of system control and equipment cost.

[0158] By using this embodiment, the applicant transforms the load-bearing capacity originally provided by the drive gear 901 and toothed belt 902 into that provided by the fifth slide rail 904 and fifth slider 905 through the addition of the fifth slide rail 904 and fifth slider 905. The fifth slide rail 904 and fifth slider 905 are rigid structures, which can usually have good load-bearing capacity at a low cost, and significantly reduce costs while ensuring that the printing substrate mechanism 3 has good displacement capability.

[0159] Based on the above embodiments of the present invention, the displacement mechanism 9 further includes at least one driven wheel 906. When the various sections are not arranged on the same axis as required, a turning action may occur during the displacement process. At this time, the added driven wheel 906 can be used to make the toothed belt 902 turn accordingly. Alternatively, when needed, the driven wheel 906 can bear the load, thereby reducing the cost of bearing the load with the driving gear 901.

[0160] Example 20

[0161] Based on the sunken fully automatic photopolymerization printer of Example 1, such as Figure 12 As shown, at least one of the resin tank 4, the part-taking tank 5, and the cleaning tank 6 has a light receiving plate 15 on the side of the part-taking tank 5 facing the displacement mechanism 9, and a laser emitter 14 is provided on the Z-axis displacement mechanism or the displacement mechanism 9 at a position corresponding to the light receiving plate 15.

[0162] After receiving information from the light receiving board 15, the control system performs precise positioning analysis and then controls the opening / closing and movement speed of the displacement mechanism 9 to control the displacement position of the Z-axis displacement mechanism, thereby controlling the displacement position of the printing substrate 305.

[0163] By matching the laser emitter 14 with the light receiver 15, the position of the Z-axis displacement mechanism or displacement mechanism 9 relative to the component on which the light receiver 15 is mounted can be accurately determined, thus enabling the control system to have more accurate position information when performing precise positioning analysis.

[0164] Example 21

[0165] Based on the sunken fully automatic photopolymerization printer of Example 20, such as Figure 11 As shown, several photoelectric sensors 1501 are arranged in a matrix on one side of the light receiving plate 15 facing the laser emitter 14, and the photoelectric sensors 1501 are connected to the control system for data transmission.

[0166] The control system determines the location of the triggered photoelectric sensor 1501 based on the serial number of the photoelectric sensor 1501 according to the information received from the photoelectric sensor 1501, and performs precise positioning analysis.

[0167] The precise positioning analysis includes the following steps:

[0168] Step 1: Determine the section to which the currently triggered photoelectric sensor 1501 belongs based on the location of the triggered photoelectric sensor 1501.

[0169] Step 2: Obtain the corresponding target control center point O based on the location confirmed in Step 1. m , where m is the section number.

[0170] Step 3: The triggered photoelectric sensor 1501 is pointed to the target control center point O. m vector A mn , where n is the natural number sequentially numbered to trigger the signal of photoelectric sensor 1501.

[0171] Step 4: Based on the vector A obtained in Step 3 mn Decomposed into X-axis displacement distance L xn and displacement direction B xfn Z-axis displacement distance L zn and displacement direction C zhn , where f is the preset representative value of the X-axis movement direction and h is the preset representative value of the Z-axis movement direction.

[0172] Step 5: Based on the X-axis displacement distance L xn and displacement direction B xfn The control displacement mechanism 9 drives the printing substrate 305 to move in the specified direction L. xn According to the Z-axis displacement distance L zn and displacement direction C zhn The Z-axis displacement mechanism controls the printing substrate 305 to move in the specified direction. zn .

[0173] Step 6: After Step 5 is completed, repeat Steps 3 to 5 until the target control center point O is reached. m The photoelectric sensor 1501 is continuously triggered.

[0174] Taking the part-retrieving section as an example, when the displacement mechanism 9 moves the printing substrate mechanism 3 to a position close to the part-retrieving slot 5, a photoelectric sensor 1501 in the light receiving plate 15 installed on the part-retrieving slot 5 receives the laser signal and generates a photoelectric response. After receiving the signal from the photoelectric sensor 1501, the control system confirms the position of the photoelectric sensor 1501 according to the preset serial number information in the information returned by the photoelectric sensor 1501, and forms a vector A pointing from the position of the photoelectric sensor 1501 to the target control center point O2 based on the target control center point O2 of the light receiving plate 15 on the part-retrieving slot 5 (assuming the part-retrieving slot 5 is numbered 2). 20003 (Assuming the part slot 5 is numbered 2, and the photoelectric sensor 1501 is numbered 0003), vector A 20003 Decomposed into X-axis displacement distance L x0003 (x represents the distance along the X-axis) and the displacement direction B x20003 (Assuming 1 represents rightward displacement and 2 represents leftward displacement), Z-axis displacement distance L z0003 and displacement direction C z10003 (Assuming 1 represents upward displacement and 2 represents downward displacement), and controlling the displacement mechanism 9 to move the printing substrate 305 to the left by L. xn The Z-axis displacement mechanism controls the printing substrate 305 to move upward. zn This ensures that the photoelectric sensor 1501 at the target control center point O2 is continuously triggered, which indicates that the printed substrate 305 is located at a predetermined position.

[0175] The reason for performing the above-mentioned precise position control is that the part removal method adopted in this invention is not the conventional shovel-type part removal, but rather the part removal is achieved by the ejector pin 5021 passing through the ejector pin hole 3051 to push the printed component away from the printing substrate 305. Therefore, the printing substrate 305 needs to be positioned in a very precise position to avoid significant misalignment between the ejector pin hole 3051 and the ejector pin 5021, which could damage the equipment.

[0176] Example 22

[0177] Based on the above embodiment of the sunken fully automatic photopolymerization printer, when the light receiving plate 15 is installed on the resin tank 4 and the cleaning tank 6, its target control center point O m Surrounding the target control center point O m A preset triggering area is formed around the center point; when the photoelectric sensor 1501 located within the preset triggering area is triggered, it is considered as the target control center point O. m Triggered.

[0178] When performing precise positioning control as shown in Example 21, a relatively long control and adjustment time is generally required because the displacement must be controlled to a fixed preset point. However, during photopolymerization printing in the resin tank 4 and cleaning in the cleaning tank 6, it is only necessary for the printed component to be located on the printing substrate 305, so the precise position control required is not as important as when picking up the component. Using the method of this embodiment, relatively precise control can be achieved within a preset range, thereby avoiding situations where the printed component cannot be located on the printing substrate 305, thus preventing the production of defective products; and also reducing the waste of excessive adjustment and control time, thereby improving printing efficiency.

[0179] Example 23

[0180] Based on the above embodiment of the sunken fully automatic photopolymerization printer, when the target control center point O... m After the photoelectric sensor 1501 is continuously triggered for a preset time, it stops performing precise positioning analysis and resets the control parameters obtained from the analysis.

[0181] When the displacement mechanism 9 is activated and drives the printing substrate 305 to move to the next stage, the positioning accuracy analysis corresponding to the next stage is initiated.

[0182] When positioning is completed and other control operations are performed, the vibration generated by the component movement can cause the laser emitted by the laser emitter 14 to deflect due to vibration. This may trigger the photoelectric sensor 1501 outside the preset point or preset area. If displacement control is restarted in this case, it will inevitably interfere with the existing process control and cause an uncontrollable structure. The method of this embodiment can avoid this situation. In addition, by resetting the control parameters, the possibility of residual control parameters affecting the accuracy of the next positioning analysis can be avoided.

[0183] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sunken full-automatic light-curing printer, characterized in that, The application relates to a printing device. The control system controls the displacement mechanism (9) to drive the printing substrate mechanism (3) to move between the printing section, the taking section and the light curing section. The printing section comprises a resin tank (4) with an open top and a scraping knife mechanism (10), and an optical mechanism (2) arranged above the resin tank (4); the optical mechanism (2) is controlled by the control system to emit laser light towards the resin tank (4). The taking section comprises a first blowing mechanism (12) and a taking tank (5) with an open top; the taking tank (5) is provided with a needle plate (502) with a plurality of top pins (5021) arranged on the needle plate (502) and pointing upwards; the first blowing mechanism (12) is controlled by the control system to blow towards the taking tank (5). The light curing section comprises a cleaning tank (6) with an open top and a shovel flushing mechanism (11), and a light curing mechanism (8) arranged above the cleaning tank (6); the second blowing mechanism (13) is controlled by the control system to blow towards the cleaning tank (6). The printing substrate mechanism (3) comprises a Z-axis displacement mechanism controlled by the control system to drive the printing substrate (305) to move up and down along the vertical direction; the printing substrate (305) is provided with a plurality of top pin holes (3051) arranged on the printing substrate (305) and covering the top pins (5021). The control system controls the displacement mechanism (9) to drive the Z-axis displacement mechanism to move and then controls the printing substrate (305) to move. The Z-axis displacement mechanism comprises a mounting substrate (301) provided with at least one first guide rail (302) arranged along the vertical direction; the first guide rail (302) is provided with a first sliding block (303) arranged along the first guide rail (302); the first sliding block (303) is connected with the printing substrate (305) or connected with the printing substrate (305) through an adapter.

2. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The mounting substrate (301) is provided with a first driving mechanism (306) arranged on the top or bottom of the first guide rail (302); the first driving mechanism (306) is controlled by the control system to drive a first screw rod (308) arranged along the first guide rail (302) to rotate; the first screw rod (308) is provided with a first displacement block (310) arranged on the first screw rod (308) in a sleeving mode; the first displacement block (310) is fixedly connected with the first sliding block (303) or fixedly connected with the adapter. The adapter comprises a first connecting mechanism (304) in an L shape or a shape similar to the L shape; the vertical part of the first connecting mechanism (304) is fixedly connected with the first sliding block (303) at the top end or a part close to the top end; the horizontal part is fixedly connected with the printing substrate (305) and makes the plate surface of the printing substrate (305) horizontal.

3. The sunken full-automatic light-curing printer according to claim 2, characterized in that, ​ The top end or the part near the top end of the vertical part of the first connecting mechanism (304) is fixedly connected with the second connecting mechanism (311), and the second connecting mechanism (311) is fixedly connected with the first displacement block (310).

4. The sunken full-automatic photo-curing printer according to claim 2, characterized in that, The first screw rod (308) is rotatably connected with the first support plate (307) and the second support plate (309) above and below the first displacement block (310) respectively; and the first support plate (307) and the second support plate (309) are fixedly connected with the mounting base plate (301).

5. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The resin tank (4) comprises a resin containing tank (402), wherein the resin containing tank (402) is internally provided with a printing inner tank (401) which is open at the upper end and matches the printing base plate (305); the bottom of the resin containing tank (402) is in communication with the inlet end of a resin pump (404), the outlet end of the resin pump (404) is in communication with the inlet end of a resin filter (405), the outlet end of the resin filter (405) is in communication with a position near the top of the printing inner tank (401); and the resin pump (404) is controlled by a control system.

6. The sunken full-automatic light-curing printer according to claim 5, characterized in that, The resin pump (404) comprises a resin storage tank and an electric control pump body; the inlet end of the resin storage tank is in communication with the resin containing tank (402), and the outlet end of the resin storage tank is in communication with the resin filter (405) through the electric control pump body; and the electric control pump body is controlled by the control system.

7. The sunken full-automatic light-curing printer according to claim 5, characterized in that, A first handle is arranged on the side wall of the resin containing tank (402) facing the user, the bottom of the resin containing tank (402) is fixedly connected with a second sliding block (403), the second sliding block (403) is buckled on a second sliding rail (406) and slides back and forth along the second sliding rail (406), and the second sliding rail (406) is fixedly connected with the support (1). The outlet end of the resin filter (405) is connected with the printing inner tank (401) through a lever quick connector (407). The bottom of the resin containing tank (402) is in communication with the inlet end of the resin pump (404) through a hose.

8. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, A non-contact liquid level sensor (16) for detecting the liquid level of the resin tank (4) is arranged above the resin tank (4), and the signal output end of the non-contact liquid level sensor (16) is signal-connected with the control system.

9. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The scraping knife mechanism (10) comprises a second driving mechanism (1001) controlled by the control system, the output end of the second driving mechanism (1001) is fixedly connected with a second screw rod (1002), the second screw rod (1002) is arranged along the horizontal longitudinal direction or the horizontal transverse direction of the resin tank (4) and is screwed with a scraper connecting plate (1003) arranged along the cross-sectional direction of the second screw rod (1002); the scraper connecting plate (1003) extends to the opposite side of the resin tank (4) relative to the second screw rod (1002), and the bottom of the scraper connecting plate (1003) is fixedly connected with a resin scraping knife (1004).

10. The sunken full-automatic photocuring printer according to claim 9, characterized in that, The part of the scraper connecting plate (1003) outside the resin tank (4) is fixedly connected with a third sliding block (1006), the third sliding block (1006) is buckled on a third sliding rail (1005) and slides along the third sliding rail (1005); the third sliding rail (1005) is arranged axially along the second screw (1002); The shell part of the second driving mechanism (1001) is connected with a third supporting plate (1007), and the third supporting plate (1007) is detachably fixedly connected with the first mounting groove (1008) of the support (1).

11. The sunken full-automatic photocuring printer according to claim 1, characterized in that, The taking-out groove (5) is located above one side of the resin tank (4), the bottom of the taking-out groove (5) is a slope towards the resin tank (4), and the side facing the resin tank (4) is open; the bottom of the taking-out groove (5) is provided with a needle plate supporting block (506); the needle plate (502) is placed above the needle plate supporting block (506) and is supported in a horizontal state.

12. The sunken full-automatic light-curing printer according to claim 11, characterized in that, The inside of the taking-out groove (5) is divided into a taking-out cavity part and a component cavity part by a partition plate (503), the needle plate supporting block (506) is arranged on the bottom surface of the taking-out cavity part, and the needle plate (502) is placed in the taking-out cavity part; the position and size of the component cavity part are matched with the Z-axis displacement mechanism, the bottom of the component cavity part is a slope towards the resin tank (4), and the side facing the resin tank (4) is open; The partition plate (503) is provided with a groove (504) matched with the connecting piece at the position of the Z-axis displacement mechanism and the printing substrate (305) connecting piece.

13. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The first blowing mechanism (12) comprises a gas storage tank (1201), an electric control gas pump (1202) and a first nozzle (1203); the gas storage tank (1201) is detachably fixedly connected with the support (1), and the gas outlet end of the gas storage tank (1201) is in communication with the inlet end of the electric control gas pump (1202); the electric control gas pump (1202) is controlled by the control system, the outlet end thereof is in communication with the first nozzle (1203), and the gas outlet direction of the first nozzle (1203) faces the needle plate (502).

14. The sunken full-automatic photocuring printer according to claim 13, characterized in that, The second blowing mechanism (13) comprises an electric control three-way valve, a second nozzle and a nozzle protection cover; the electric control three-way valve is installed at the gas outlet end of the electric control gas pump (1202) and is controlled by the control system, one gas outlet thereof is in communication with the first nozzle (1203), and the other gas outlet is in communication with the second nozzle; the second nozzle is installed in the nozzle protection cover and the gas outlet direction thereof faces the cleaning tank (6); the nozzle protection cover is provided with a gas outlet hole at the side wall in the gas outlet direction of the second nozzle, and an electric control heating net is installed on the gas outlet hole.

15. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The bottom of the cleaning tank (6) is in communication with a cleaning liquid filter, the liquid outlet end of the cleaning liquid filter is arranged in a cleaning liquid storage tank (7), the bottom of the cleaning liquid storage tank (7) is in communication with the cleaning tank (6) through an electric control liquid pump, and the electric control liquid pump is controlled by the control system. The cleaning liquid filter comprises: a liquid outlet pipe (701), a filter barrel (702), and a filter barrel cover (703); one end of the liquid outlet pipe (701) is in communication with the bottom of the cleaning tank (6), and the other end is provided with a first connecting external thread (7011); the side wall of the filter barrel (702) is a filter screen, and the top of the filter barrel (702) is provided with a connecting pipe; the connecting pipe is provided with a first connecting internal thread (7021) matched with the first connecting external thread (7011); the bottom of the filter barrel (702) is externally provided with a second connecting external thread (7022) and is open; the cover body of the filter barrel cover (703) is a filter screen matched with the side wall of the filter barrel (702), and the side facing the filter barrel (702) is provided with a second connecting internal thread (7031) matched with the second connecting external thread (7022).

16. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The shovel blade flushing mechanism (11) comprises a third driving mechanism (1101), wherein the third driving mechanism (1101) is controlled by a control system, the output end of the third driving mechanism (1101) is fixedly connected with a third screw rod (1102), the third screw rod (1102) is arranged along the horizontal longitudinal direction or the horizontal transverse direction of the cleaning tank (6), and a shovel blade mechanism (1106) is screwed along the cross section direction of the third screw rod (1102); the shovel blade mechanism (1106) extends to the opposite side of the cleaning tank (6) relative to the third screw rod (1102), and the bottom of the shovel blade mechanism (1106) is provided with a shovel blade edge arranged obliquely away from the third driving mechanism (1101).

17. The sunken full-automatic light-curing printer according to claim 16, characterized in that, The part of the shovel blade mechanism (1106) outside the cleaning tank (6) is fixedly connected with a fourth sliding block (1104), the fourth sliding block (1104) is buckled on a fourth sliding rail (1105) and slides along the fourth sliding rail (1105); and the fourth sliding rail (1105) is arranged along the axial direction of the third screw rod (1102). The shell part of the third driving mechanism (1101) is connected with a fourth supporting plate (1107), and the fourth supporting plate (1107) is detachably fixedly connected with the second mounting groove (1108) of the support (1).

18. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The displacement mechanism (9) comprises at least one driving gear (901), wherein the driving gear (901) is driven by a fourth driving device, and the fourth driving device is controlled by a control system; a tooth belt (902) is toothedly connected to the driving gear (901), and a printing substrate connecting block (903) is detachably fixed to the tooth belt (902); and the printing substrate connecting block (903) is detachably fixedly connected with the printing substrate mechanism (3).

19. The sunken full-automatic light-curing printer according to claim 18, characterized in that, The support (1) is provided with a fifth sliding rail (904) on at least one side of the tooth belt (902) in the movement direction of the tooth belt (902); a fifth sliding block (905) is buckled on the fifth sliding rail (904), and the fifth sliding block (905) is detachably fixedly connected with the printing substrate mechanism (3).

20. The sunken full-automatic photocuring printer according to claim 18 or 19, characterized in that, The displacement mechanism (9) further comprises at least one driven wheel (906).

21. The sunken full-automatic photo-curing printer according to claim 1, characterized in that, The resin tank (4), the taking tank (5), the cleaning tank (6) are provided with a light receiving plate (15) on the side facing the displacement mechanism (9) at least in the taking tank (5), the Z-axis displacement mechanism or the displacement mechanism (9) is provided with a laser emitter (14) at the corresponding position of the light receiving plate (15); The control system receives the information of the light receiving plate (15), carries out positioning precision analysis, and controls the displacement position of the Z-axis displacement mechanism by controlling the opening / closing and movement speed of the displacement mechanism (9), thereby controlling the displacement position of the printing substrate (305).

22. The sunken full-automatic photocuring printer according to claim 21, characterized in that, The side of the light receiving plate (15) facing the laser emitter (14) is arranged with a plurality of photoelectric sensors (1501) in a matrix manner, and the photoelectric sensors (1501) are connected with the control system; The control system confirms the position of the triggered photoelectric sensor (1501) based on the serial number of the photoelectric sensor (1501) according to the received information of the photoelectric sensor (1501), and carries out positioning precision analysis; The positioning precision analysis includes the following steps: Step 1: According to the position of the triggered photoelectric sensor (1501), confirm the section to which the currently triggered photoelectric sensor (1501) belongs; Step 2 Obtain the corresponding target control center point O according to the position confirmed in step 1 m wherein m is the number corresponding to the process section; Step 3 Form the triggered photoelectric sensor (1501) points to the target control center point O m of the vector A mn n is the natural number sequential number of the current triggered photoelectric sensor (1501) signal; Step 4: vector A obtained according to step 3 mn Decomposed into X-axis displacement distance Lxn and displacement direction B xfn , Z-axis displacement distance L zn and displacement direction C zhn , wherein f is the preset representative value of the motion direction of the X-axis, and h is the preset representative value of the motion direction of the Z-axis. Step 5 According to the X-axis displacement distance L xn and displacement direction B xfn Control the displacement mechanism (9) to drive the printing substrate (305) to move L in the specified direction xn , according to the Z-axis displacement distance L zn and displacement direction C zhn Control the Z-axis displacement mechanism to drive the printing substrate (305) to move L in the specified direction zn ; Step 6 After step 5 is performed, repeat steps 3 to 5 to the target control center point O m The photoelectric sensor (1501) is continuously triggered.

23. The sunken full-automatic light-curing printer according to claim 22, characterized in that, When a light receiving plate (15) is installed on the resin tank (4) and the cleaning tank (6), its target control center point O m Surrounding the target control center point O m A preset triggering area is formed around the center point; when the photoelectric sensor (1501) located within the preset triggering area is triggered, it is considered as the target control center point O. m Triggered.

24. The sunken full-automatic photo-curing printer according to claim 22 or 23, characterized in that, When the photoelectric sensor (1501) of the target control center point Om is continuously triggered for a preset time, stop the positioning precision analysis, and reset the control parameters obtained by analysis; When the displacement mechanism (9) starts and drives the printing substrate (305) to displace to the next section, start the positioning precision analysis of the next section.

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