Resin tank fragment cleaning scraper device

Abstract

The utility model belongs to the field of 3D printing, and discloses a resin tank fragment cleaning scraper device which comprises a scraper assembly, an automatic lifting assembly and a scraper horizontal movement mechanism, the automatic lifting assembly automatically adjusts the height of the scraper assembly, and the scraper horizontal movement mechanism is arranged at the bottom of a resin tank bottom plate and drives the scraper assembly to horizontally move. And the fragments in the resin tank are cleaned. The height of the scraper assembly is automatically adjusted through the automatic lifting assembly, fragments in the resin tank can be cleaned, the automatic lifting assembly is of an automatic structure, the automation degree is high, and more labor is saved.

Description

Technical Field

[0001] The utility model relates to the field of 3D printing, in particular to a resin tank fragment cleaning scraper device. Background Art

[0002] At present, 3D printing equipment on the market generally has the problem of debris falling during printing, debris not being cleaned up during the process of scraping the model from the printing platform, debris adhering to the printing platform, and falling into the resin tank during the next printing job, and debris not being cleaned up in time when the resin tank is changed, resulting in debris being deposited at the bottom of the resin tank. When printing, the platform is pressed on the debris particles, resulting in serious consequences of damaging the bottom LCD screen and the resin tank release film.

[0003] A Chinese patent with publication number CN218876303U discloses a scraper device for a photocurable 3D printer, including an electric lead screw slide and a resin tank, wherein the outer walls on both sides of the electric lead screw slide are respectively fixed with connecting plates, the outer wall on one side of the connecting plate is fixed with a guide plate, the inner wall of the electric lead screw slide is slidably connected with a second movable block, the outer wall on one side of the guide plate is slidably connected with a first movable block, a scraper body is arranged on the outer wall on the opposite side of the first movable block and the second movable block, a support plate is fixed to the top outer wall of the scraper body, a threaded rod is rotatably connected to the top outer wall of the support plate, a connecting piece is connected to the outer wall of the threaded rod through a thread, a movable plate is fixed to the outer wall on one side of the connecting piece, a sawtooth head is fixed to the outer wall on the bottom of the movable plate, and a plurality of sawtooth grooves are opened on the outer wall on one side of the sawtooth head. The scraper device allows the scraper body as a whole to smooth the resin, and can drive the sawtooth head on one side to scrape off the resin remaining on the inner wall of the resin tank. However, the scraper device still has the following problems:

[0004] 1) The threaded rod needs to be manually operated to raise and lower the scraper, which is not convenient enough;

[0005] 2) The electric lead screw guide rail is installed on the upper surface of the resin tank. When printing, the frame consisting of the electric lead screw guide rail, connecting plate and guide plate needs to be removed from the top of the resin tank as a whole to avoid interference with printing. The frame is large in size and weight, which makes it difficult to disassemble and assemble;

[0006] 3) It is difficult to disassemble and assemble the scraper body. Utility Model Content

[0007] The utility model aims to provide a scraper device for cleaning resin tank fragments to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A resin tank debris cleaning scraper device, comprising:

[0010] Scraper assembly;

[0011] An automatic lifting assembly that automatically adjusts the height of the scraper assembly; and

[0012] The scraper horizontal motion mechanism is arranged at the bottom of the resin tank bottom plate, and drives the scraper assembly to move horizontally to complete the cleaning of the debris in the resin tank.

[0013] Furthermore, the automatic lifting component is an electric lifting component, a pneumatic lifting component, or a hydraulic lifting component.

[0014] Furthermore, the scraper assembly is configured to avoid the printing area of ​​the resin tank under the drive of the scraper horizontal movement mechanism and the automatic lifting assembly after the cleaning work is completed.

[0015] Furthermore, the scraper assembly has an idle height position, a scraping height position and a cleaning height position whose heights decrease successively, and the automatic lifting assembly enables the scraper assembly to switch between the three height positions. When the scraper assembly is in the scraping height position, the scraper assembly scrapes the liquid in the resin tank under the drive of the scraper horizontal motion mechanism.

[0016] Furthermore, the automatic lifting component is arranged on the scraper horizontal motion mechanism, and the scraper component is arranged on the automatic lifting component.

[0017] Furthermore, the scraper assembly and the automatic lifting assembly are detachably connected via a magnetic structure.

[0018] Furthermore, the scraper assembly is inserted into the automatic lifting assembly in an up-and-down guiding manner.

[0019] Furthermore, there are two groups of automatic lifting components, which are respectively located on the left and right sides of the resin tank, and the left and right ends of the scraper assembly are respectively connected to the left and right groups of automatic lifting components.

[0020] Furthermore, the scraper horizontal motion mechanism has two left and right groups, which are respectively arranged on the left and right sides of the resin tank bottom plate, and the scraper horizontal motion mechanism is connected to the automatic lifting component on the same side.

[0021] Furthermore, the scraper horizontal movement mechanism is arranged at the bottom of the resin tank bottom plate, and the scraper assembly is located at the upper end of the resin tank bottom plate.

[0022] Furthermore, the scraper assembly includes a scraper fixing frame and a scraper body connected to the scraper spl fixing frame via a fastener, and the scraper body can adjust its relative position on the scraper fixing frame.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1) The utility model adopts an automatic lifting component to automatically adjust the height of the scraper component, which can realize the cleaning of the debris in the resin tank. Moreover, the automatic lifting component is an automated structure with a high degree of automation and more labor-saving;

[0025] 2) The scraper assembly and the automatic lifting assembly are fixed by magnetic adsorption, which is convenient for the disassembly and assembly of the scraper assembly;

[0026] 3) The scraper horizontal movement mechanism is installed at the bottom of the resin tank bottom plate so that it will not affect the printing;

[0027] 4) The stroke of the scraper assembly exceeds the printing area of ​​the resin tank. During printing, the scraper assembly can be moved to one side of the resin tank without affecting printing. There is no need to disassemble the scraper assembly and other structures, making printing operations more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the schematic diagrams of the structure of the utility model in use state.

[0029] Figure 2 This is the second schematic diagram of the structure of the utility model in use state.

[0030] Figure 3 This is the third schematic diagram of the structure of the utility model in use state.

[0031] Figure 4 This is a schematic diagram of the structure of the scraper assembly in the utility model.

[0032] Figure 5 This is a schematic diagram of the structure of the automatic lifting component of the utility model.

[0033] Figure 6 Schematic diagram of the change of the use state of the utility model, in which a, b, c and d respectively represent four states of the utility model.

[0034] Figure 7 This is a schematic diagram of the printing platform entering and exiting the resin tank.

[0035] In the figure:

[0036] Scraper horizontal motion mechanism 1, dual output shaft motor 101, synchronous belt 102, guide rail 103, travel switch 104, synchronous pulley 105, transmission shaft 106, slide 107;

[0037] Scraper assembly 2, scraper fixing frame 201, magnetic conductor 202, scraper body 203, fastening screw 204, protrusion 205;

[0038] Automatic lifting assembly 3, magnet 301, mounting frame 302, guide groove 303, automatic lifter 304;

[0039] Resin tank bottom plate 4, long slot 401;

[0040] Printing platform 5. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] See also Figure 1-Figure 7 A scraper device for cleaning resin tank debris includes a scraper assembly 2, an automatic lifting assembly 3 and a scraper horizontal motion mechanism 1. The scraper horizontal motion mechanism 1 is arranged at the bottom of the resin tank bottom plate 4, the scraper assembly 2 is located at the upper end of the resin tank bottom plate 4, the automatic lifting assembly 3 automatically adjusts the height of the scraper assembly 2, and the scraper horizontal motion mechanism 1 drives the scraper assembly 2 to move horizontally to complete the cleaning of the debris in the resin tank.

[0043] It can be understood that in the above technical scheme, the utility model adopts the automatic lifting component 3 to automatically adjust the height of the scraper component 2, which can realize the cleaning of the debris in the resin tank, and the automatic lifting component 3 is an automated structure with a high degree of automation and more labor-saving, and the scraper horizontal movement mechanism is installed at the bottom of the resin tank bottom plate, so that it will not affect the printing.

[0044] Furthermore, in one embodiment of the present utility model, the automatic lifting component 3 is an electric lifting component.

[0045] In other embodiments, the automatic lifting assembly 3 may also be a pneumatic lifting assembly or a hydraulic lifting assembly.

[0046] Furthermore, in one embodiment of the utility model, the scraper assembly 2 has a scraping height position and a cleaning height position, and the automatic lifting assembly 3 automatically adjusts the height of the scraper assembly 2 so that the scraper assembly 2 switches between the two height positions. In addition to the two height positions, the automatic lifting assembly 3 can also adjust the scraper assembly 2 to other height positions. When the scraper assembly 2 is at the scraping height position, the scraper assembly 2 scrapes the liquid in the resin tank under the drive of the scraper horizontal motion mechanism 1. When the scraper assembly 2 is at the cleaning height position, the scraper assembly 2 cleans the debris in the resin tank under the drive of the scraper horizontal motion mechanism 1.

[0047] When the scraper assembly 2 is idle, the scraper assembly 2 is driven by the scraper horizontal movement mechanism 1 and the automatic lifting assembly 3 to move to one side of the resin tank to avoid the printing area to avoid interference with printing.

[0048] The scraping height position of the scraper assembly 2 is an optional setting, which can be retained or cancelled as needed.

[0049] Continue reading Figure 1-Figure 3 In one embodiment of the utility model, the automatic lifting component 3 is arranged on the scraper horizontal motion mechanism 1, and the scraper component 2 is arranged on the automatic lifting component 3.

[0050] Continue reading Figure 1-Figure 3 In one embodiment of the utility model, the scraper horizontal motion mechanism 1 has two left and right groups, which are respectively arranged on the left and right sides of the resin tank bottom plate 4, and are laid along the front and rear directions. The automatic lifting component 3 also has two left and right groups, which are respectively arranged on the scraper horizontal motion mechanism 1 on the same side, and the left and right ends of the scraper component 2 are respectively connected to the left and right two groups of automatic lifting components 3.

[0051] When horizontal movement is required, the two sets of scraper horizontal motion mechanisms 1 drive the scraper assembly 2 to move through the automatic lifting assembly 3. When the height needs to be adjusted, the two sets of automatic lifting assemblies 3 drive the scraper assembly 2 to rise and fall.

[0052] Continue reading Figure 2-Figure 4 In one embodiment of the utility model, the scraper assembly 2 and the automatic lifting assembly 3 are detachably connected through a magnetic structure.

[0053] The scraper assembly 2 includes a scraper fixing frame 201 and a scraper body 203 connected to the lower end of the scraper fixing frame 201 by a fastening screw 204, and a magnetic conductor 202 is respectively arranged at the left and right ends of the scraper fixing frame 201. The automatic lifting assembly 3 includes a mounting frame 302 and an automatic lifter 304 arranged on the mounting frame 302, a magnet 301 is arranged on the output end of the automatic lifter 304, the magnetic conductor 202 is supported and attracted on the magnet 301, and the magnetic conductor 202 and the magnet 301 form a magnetic attraction structure.

[0054] It should be noted that the magnetic conductor 202 and the magnet 202 can also be replaced by other magnetic structures as long as the magnetic fixation and disassembly functions of the scraper assembly 2 and the automatic lifting assembly 3 can be achieved. This is a well-known technology in the field of magnetic connection and will not be described in detail.

[0055] Further reading Figure 2-Figure 4 In one embodiment of the utility model, the scraper assembly 2 and the automatic lifting assembly 3 are guided and plugged up and down, so that the scraper assembly 2 and the automatic lifting assembly 3 are connected more smoothly and firmly. Specifically, the left and right ends of the scraper fixing frame 201 respectively have downwardly protruding bumps 205, and the upper end of the mounting frame 302 has a guide groove 303 that matches the shape and size of the bump 205, and the bump 205 is inserted into the guide groove 303.

[0056] In other embodiments, a guide groove structure may be provided on the scraper fixing frame 201 , and a protrusion structure that is slidably plugged with the guide groove structure may be provided on the mounting frame 303 .

[0057] Further reading Figure 4 In one embodiment of the present invention, the scraper body 203 can adjust its relative position on the scraper fixing frame 201.

[0058] Specifically, upwardly protruding connecting plates are respectively provided at the left and right ends of the upper end of the scraper body 203, and the connecting plates have adjustment ports. The connecting plates of the scraper body 203 are connected to the scraper mounting frame 201 by fastening screws 204, and the fastening screws 204 pass through the adjustment ports and are screwed to the scraper mounting frame 201. The outer diameter of the screw of the fastening screws 204 is smaller than the diameter of the adjustment ports. When the fastener screws 204 are loosened, the scraper body 203 can be fine-tuned on the scraper mounting frame 201 up and down and left and right with the help of the adjustment ports, and the designed fine-tuning distance is 5mm up and down and left and right. The utility model ensures the effective interception and cleaning of solidified debris particles by adjusting the gap size between the end face of the scraper body 203 and the release film on the bottom of the resin tank. A large opening is designed on the scraper body 203 for installing a filter screen, and the size of the filter screen mesh can be selectively installed according to the size of the debris particles to be intercepted.

[0059] When installing the scraper assembly 3, the scraper body 203 is installed along the guide groove 303 on the automatic lifting assembly, and the magnet 301 on the scraper body 203 and the magnet 301 on the automatic lifting assembly are attracted to each other to achieve quick installation. Before installing the scraper body 203, check whether the fastening screw 204 is loose. If the fastening screw 204 is locked, loosen it and keep it loose. After the scraper body 203 is installed, adjust the position of the scraper body 203 by lining the scraper body 203 and the bottom of the resin tank with a gasket of equal height (thickness 0.2mm), and then fix the scraper body 203 by tightening the fastening screw 204.

[0060] Further reading Figure 2 In one embodiment of the utility model, the scraper horizontal motion mechanism 1 includes a synchronous belt mechanism, which includes two synchronous pulleys 105 and a synchronous belt 102 installed on the two synchronous pulleys 105. The left and right synchronous belt mechanisms share a dual-output shaft motor 101 for driving, wherein the dual-output shaft motor 101 is close to one of the synchronous belt mechanisms, and one end of its output shaft is directly connected to the synchronous pulley 105 of the synchronous belt mechanism, while the other end of the output shaft is connected to the transmission shaft 106 through a coupling, and the transmission shaft 106 is connected to the synchronous pulley 105 of the synchronous belt mechanism on the other side.

[0061] Furthermore, the scraper horizontal motion mechanism 1 also includes a slide 107, a guide rail 103 and two travel switches 104. The guide rail 103 is fixedly laid on the bottom of the resin tank bottom plate 4. The slide 105 is slidably matched with the guide rail 103 and is connected to the corresponding synchronous belt 102. The slide 105 is correspondingly connected to the mounting frame 302. The resin tank bottom plate 4 has a long groove 401 for the mounting frame 302 to pass through and move back and forth. The two travel switches 104 are fixed to the bottom of the resin tank bottom plate 4 and are respectively located at the front and rear ends of the synchronous belt mechanism. The slide 107 has a trigger member for triggering the travel switch 104.

[0062] The utility model controls the travel of the scraper assembly 2 through the travel switch 104, which is a well-known technology and will not be described in detail.

[0063] In addition, the present invention also achieves the following settings by setting the position of the travel switch 104, the position and length of the synchronous belt mechanism: after finishing the scraping or cleaning work, the scraper horizontal motion mechanism 1 drives the scraper to avoid the printing area of ​​the resin tank. Specifically, the position of the front or rear travel switch 104 is adjusted to be away from the printing area of ​​the resin tank, and accordingly, the length and position of the synchronous belt mechanism are matched thereto.

[0064] It should be noted that the above-mentioned synchronous belt mechanism can also be replaced by an electric linear slide, a pneumatic linear slide, a hydraulic linear slide and other mechanisms.

[0065] Continue reading Figure 6 and Figure 7 , the cleaning process of the utility model is:

[0066] Figure 6 a is the default initial state of the scraper set by the program. When the device executes a print job, Figure 7 As shown, the printing platform 5 will be set by the program Figure 7 The scraper moves in and out of the resin tank liquid surface for 3 back and forth movements in the direction of the middle arrow (in actual operation, the printed surface will often have debris particles remaining on the platform due to the incomplete cleaning of the solidified resin fragments. This action can effectively clean the debris remaining on the platform into the resin tank). Then the scraper starts to intervene. The scraper movement trajectory is in the order of state a→state b→state c→state d→state a for one cycle. The scraper moves in the order of state a→state b→state c→state d→state a. Figure 6In the initial state a (when the device is printing, the program sets the scraper to stay in this state), the scraper and the bottom of the resin tank are kept in a pre-adjusted state (the gap between the two is 0.2mm). When performing the debris cleaning action, the scraper component 2 is lifted up 14mm (such as state b) under the intervention of the automatic lifting component 3, and then the scraper horizontal movement mechanism 1 intervenes to move the scraper component 2 backward to a predetermined position (such as state c). The scraper horizontal movement mechanism 1 is controlled by the travel switch 104, and then the automatic lifting component 3 intervenes, and the scraper component 2 drops 14mm (such as state d), and then the scraper horizontal movement mechanism 1 intervenes to drive the scraper component 2 to move forward, filtering the debris particles in the resin tank to the initial position of state a. The above cleaning action is one round. Before each device works to execute the printing step, the program sets that three rounds of cleaning actions will be performed before printing. When the device is printing, the scraper component 3 always remains in the initial position to ensure that the debris particles will not enter the printing area, thereby avoiding the screen and the resin tank release film from being crushed.

[0067] Among them, state a and state d correspond to the cleaning height position of the scraper assembly 2.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A resin tank debris cleaning scraper device, characterized in that: include: Scraper assembly (2); An automatic lifting component (3), wherein the automatic lifting component (3) automatically adjusts the height of the scraper component (2); as well as A scraper horizontal motion mechanism (1) is arranged at the bottom of the resin tank bottom plate (4) and drives the scraper assembly (2) to move horizontally to complete the cleaning of debris in the resin tank.

2. A resin tank debris cleaning scraper device according to claim 1, characterized in that: The automatic lifting component (3) is an electric lifting component, a pneumatic lifting component, or a hydraulic lifting component.

3. A resin tank debris cleaning scraper device according to claim 1, characterized in that: The scraper assembly (2) is configured to avoid the printing area of ​​the resin tank under the drive of the scraper horizontal movement mechanism (1) and the automatic lifting assembly (3) after the cleaning work is completed.

4. A resin tank debris cleaning scraper device according to claim 1, characterized in that: The scraper assembly (2) has an idle height position, a scraping height position and a cleaning height position, the heights of which decrease in sequence. The automatic lifting assembly (3) switches the scraper assembly (2) between the three height positions. When the scraper assembly (2) is at the scraping height position, the scraper assembly (2) scrapes the liquid in the resin tank under the drive of the scraper horizontal motion mechanism (1).

5. The resin tank debris cleaning scraper device according to claim 1, characterized in that: The automatic lifting component (3) is arranged on the scraper horizontal motion mechanism (1), and the scraper component (2) is arranged on the automatic lifting component (3).

6. A resin tank debris cleaning scraper device according to claim 5, characterized in that: The scraper assembly (2) and the automatic lifting assembly (3) are detachably connected via a magnetic attraction structure.

7. A resin tank debris cleaning scraper device according to claim 5, characterized in that: The scraper assembly (2) and the automatic lifting assembly (3) are inserted into each other in an up-and-down guiding manner.

8. The resin tank debris cleaning scraper device according to claim 5, characterized in that: The automatic lifting components (3) have two groups, which are respectively located on the left and right sides of the resin tank, and the left and right ends of the scraper component (2) are respectively connected to the left and right groups of automatic lifting components (3).

9. A resin tank debris cleaning scraper device according to claim 8, characterized in that: The scraper horizontal motion mechanism (1) has two left and right groups, which are respectively arranged on the left and right sides of the resin tank bottom plate (4), and the scraper horizontal motion mechanism (1) is connected to the automatic lifting component (3) on the same side.

10. The resin tank debris cleaning scraper device according to claim 1, characterized in that: The scraper assembly (2) comprises a scraper fixing frame (201) and a scraper body (203) connected to the scraper fixing frame (201) via a fastener, and the scraper body (203) can adjust its relative position on the scraper fixing frame (201).

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