Feeding mechanism of photosensitive resin 3D printer

Abstract

The feeding mechanism of the photosensitive resin 3D printer comprises a base block, a pump body and a photosensitive resin raw material, a clamping assembly, a controller, a limiting assembly and a measuring assembly are arranged on the base block, the base block is installed on the edge of a material groove through the clamping assembly, an inlet of the pump body communicates with the photosensitive resin raw material, and an outlet of the pump body communicates with the photosensitive resin raw material; a pipeline is arranged at an outlet of the pump body, the limiting assembly is used for limiting the liquid outlet end of the pipeline and enabling the liquid outlet end to face the material groove downwards, the measuring assembly is used for detecting the liquid level height of photosensitive resin in the material groove, and the controller is used for receiving signals of the measuring assembly and controlling operation of the pump body. The liquid level height of the photosensitive resin in the trough is measured through the measuring assembly, when the liquid level height drops to a certain degree, the pump body can be started to supplement the photosensitive resin into the trough in time, the whole process is automatically conducted, and operators can be liberated.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field especially relates to a feeding mechanism of photosensitive resin 3D printer. BACKGROUND

[0002] The light-curing 3D printing technology has been favored by the 3D printing industry because of high printing precision, good surface finish and other advantages. In recent years, with the progress of material science, various functional liquid photosensitive resin materials with different functions have been developed, and the printing precision and speed have been greatly improved, so the light-curing 3D printing technology has received more and more attention.

[0003] The invention patent with publication number CN107984753A discloses a light-curing 3D printer, which comprises a base, a tank for storing liquid photosensitive resin, a forming platform and a lifting mechanism, wherein the tank and the lifting mechanism are respectively arranged on the base, the forming platform is connected with the lifting mechanism, the forming platform is suspended directly above the tank, a curing light source is arranged in the base, the curing light source is an array of ultraviolet LED backlight lamp panels, a display component is arranged on the base, the display component is a liquid crystal display screen, the array of ultraviolet LED backlight lamp panels is located directly below the liquid crystal display screen, the liquid crystal display screen is located at the bottom of the tank, and a taut FEP film is arranged on the tank.

[0004] The above-mentioned related technical solutions have the following defects: the above-mentioned 3D printer must be manually filled with photosensitive resin before normal printing, and after printing is completed, the photosensitive resin must be manually filled again due to the consumption of the photosensitive resin. With the increase of the forming size of the light-curing 3D printer, more photosensitive resin is needed, and when the photosensitive resin is consumed during printing, it is necessary to manually refill the photosensitive resin. During the whole process, the operator needs to pay attention to the remaining amount of photosensitive resin in the tank at all times, which restricts the operator and makes it difficult for the operator to perform other work. UTILITY MODEL CONTENT

[0005] In order to add photosensitive resin in time during printing, the application provides a feeding mechanism of photosensitive resin 3D printer.

[0006] The feeding mechanism of photosensitive resin 3D printer provided by the application adopts the following technical solution:

[0007] The utility model provides a feeding mechanism of photosensitive resin 3D printer, including base block, pump body and photosensitive resin raw material, be equipped with clamping assembly, controller, limiting component and measuring assembly on the base block, the base block is installed on the edge of trough through clamping assembly, the import of pump body communicates photosensitive resin raw material, the outlet of pump body is equipped with pipeline, limiting component is used for limiting the liquid outlet end of pipeline and makes the liquid outlet end downward to the trough, measuring assembly is used for detecting the liquid level of photosensitive resin in the trough, the controller is used for receiving the signal of measuring assembly and controls the operation of pump body.

[0008] Through the above technical scheme, the liquid level of photosensitive resin in the trough is measured through the measuring assembly, when the liquid level drops to a certain degree, the pump body can start to supplement photosensitive resin in the trough in time, the whole process is automatic, and the operator can be liberated.

[0009] Preferably, the base block includes a first plate and a second plate arranged perpendicular to each other, the clamping assembly includes a locking bolt, a block and a groove, the locking bolt is threadedly connected to the first plate, the groove is formed on the inner side of the second plate facing the first plate, when the base block is installed on the edge of the trough, the first plate faces the outer side wall of the trough, the top end of the edge of the trough is located in the groove and abuts against the end wall of the groove away from the first plate, and the end of the locking bolt abuts against the outer wall of the trough.

[0010] By adopting the above technical scheme, after the base block is installed on the edge of the trough, the locking bolt is tightened, the inner and outer side walls of the trough abut against the end wall of the locking bolt and the groove respectively, and the base block can be fixedly installed on the trough.

[0011] Preferably, the clamping assembly further includes a block, the block is rotatably connected to one end of the locking bolt facing the trough, when the base block is installed on the edge of the trough, the block abuts against the outer wall of the trough.

[0012] By adopting the above technical scheme, the block replaces the end of the locking bolt abutting against the outer wall of the trough, the base block can increase the contact area with the outer wall of the trough and reduce the damage to the outer wall of the trough.

[0013] Preferably, the measuring assembly comprises a float, a float bar, a mounting rod, a contact block and two proximity switches, the float and the float bar can float on the liquid photosensitive resin, the second plate is provided with a through slot, the float bar is vertically arranged and slidably arranged on the through slot, the float is fixedly arranged at the bottom end of the float bar, the contact block is arranged on the side wall of the float bar, the contact block and the float are arranged on the upper and lower sides of the through slot respectively, the mounting rod is arranged on the top surface of the second plate in the vertical direction, the two proximity switches are arranged at different height positions of the mounting rod respectively, and the contact block is arranged between the two proximity switches; when the contact block abuts against the upper proximity switch, the pump body stops running, and when the contact block abuts against the lower proximity switch, the pump body starts running.

[0014] By adopting the above technical scheme, when the float and the float bar move downward to drive the contact block to abut against the lower proximity switch, it indicates that the liquid level in the trough has dropped to the lowest height at which the photosensitive resin needs to be added, at this time, the pump body starts to run to add the photosensitive resin into the trough, during the process of adding the photosensitive resin, the liquid level rises, the float and the float bar move upward to finally drive the contact block to abut against the lower proximity switch, at this time, the pump body stops running and the photosensitive resin is no longer added into the trough, so that the photosensitive resin is prevented from being added in excess and overflowing.

[0015] Preferably, the limiting assembly comprises a through hole and a limiting piece, the through hole is vertically arranged on the second plate, and the through hole is used for passing the pipeline, and the limiting piece is used for limiting the pipeline passing through the through hole.

[0016] By adopting the above technical scheme, the bottom end of the pipeline passes through the through hole, and the pipeline is opposite to the trough and is used for draining the photosensitive resin into the trough.

[0017] Preferably, the limiting piece comprises a spring, a pressing block and a fixed block, the fixed block is fixedly arranged on the top surface of the second plate, the pressing block is slidably arranged on the top surface of the second plate in the horizontal direction, and the two ends of the spring are arranged on the fixed block and the pressing block respectively, and the pressing block is used for abutting against the pipeline.

[0018] By adopting the above technical scheme, the pressing block abuts against the pipeline under the action of the spring, and the pipeline is limited by abutting against the pipeline.

[0019] Preferably, the limiting piece further comprises a fixed frame, the fixed frame is arranged in a C shape, the two ends of the fixed frame are fixedly arranged on the top surface of the second plate respectively, the fixed frame is located directly above the through hole, the pressing block is located on the side of the through hole away from the trough, and the top end of the fixed frame is located above the pressing block and is used for abutting against the pipeline.

[0020] By adopting the technical scheme, the pressing block is used in cooperation with the fixing frame, the bending direction of the pipeline can be limited, the part of the pipeline below the through hole and below the through hole can be inclined to the side of the inner wall of the tank, the part of the pipeline above the through hole can be bent to the side away from the tank, and the pipeline can not affect the forming platform of the photosensitive resin 3D printer.

[0021] The technical effects of the utility model mainly embody in the following aspects:

[0022] 1、The utility model discloses a measuring assembly measures the liquid level of photosensitive resin in the tank, when the liquid level drops to a certain degree, the pump body can start and replenish photosensitive resin in the tank in time, the whole process is automatic, and the operator can be liberated.

[0023] 2、The utility model discloses a base block is installed on the tank edge, and the locking bolt is screwed, and the inner and outer two side walls of the tank are respectively abutted on the locking bolt and the groove end wall, and the base block can be fixedly installed on the tank. DRAWINGS

[0024] Figure 1 It is the whole structure schematic diagram of the embodiment of the application.

[0025] Figure 2 It is the assembly schematic diagram of the base block and the tank of the embodiment of the application.

[0026] Figure 3 It is Figure 2 The enlarged view of A in the figure.

[0027] Figure 4 It is Figure 3 The sectional view of B-B line in the figure.

[0028] The figure mark explanation: 1, the pump body;11, the pipeline;2, photosensitive resin raw material;3, base block;31, first board;32, second board;321, through slot;4, clamping assembly;41, locking bolt;42, abutment;43, groove;5, limiting assembly;51, through hole;52, spring;53, pressing block;54, fixed block;55, fixing frame;6, measuring assembly;61, float block;62, float strip;63, mounting rod;64, contact block;65, proximity switch;7, tank;8, forming platform. DETAILED DESCRIPTION

[0029] The following combines the drawings Figures 1-4 The application is further explained in detail, so that the technical scheme of the application is easier to understand and master.

[0030] The embodiment of the application discloses a feeding mechanism of photosensitive resin 3D printer.

[0031] Refer to Figures 1-4The feeding mechanism of the photosensitive resin 3D printer in the embodiment comprises a base block 3, a pump body 1 and photosensitive resin raw materials 2, the base block 3 is provided with a clamping assembly 4, a controller, a limiting assembly 5 and a measuring assembly 6, the base block 3 is installed on the edge of a tank 7 through the clamping assembly 4, the inlet of the pump body 1 is communicated with the photosensitive resin raw materials 2, the outlet of the pump body 1 is provided with a pipeline 11, the limiting assembly 5 is used for limiting the liquid outlet end of the pipeline 11 and making the liquid outlet end downwardly face the tank 7, the measuring assembly 6 is used for detecting the liquid level of the photosensitive resin in the tank 7, and the controller is used for receiving the signal of the measuring assembly 6 and controlling the operation of the pump body 1.

[0032] With reference to Figures 1-4 The liquid level of the photosensitive resin in the tank 7 is measured through the measuring assembly 6, when the liquid level decreases to a certain degree, the pump body 1 can be started to timely supplement the photosensitive resin into the tank 7, the whole process is automatically carried out, and the operator can be liberated.

[0033] With reference to Figure 3 and Figure 4 The base block 3 comprises a first plate 31 and a second plate 32 which are arranged perpendicularly to each other, the clamping assembly 4 comprises a locking bolt 41, an abutting block 42 and a groove 43, the locking bolt 41 is threadedly connected to the first plate 31, the groove 43 is formed on the inner side of the second plate 32 facing the first plate 31, when the base block 3 is installed on the edge of the tank 7, the first plate 31 faces the outer side wall of the tank 7, the top end of the edge of the tank 7 is located in the groove 43 and abuts against the end wall of the groove 43 away from the first plate 31, and the end of the locking bolt 41 abuts against the outer wall of the tank 7.

[0034] With reference to Figure 3 and Figure 4 After the base block 3 is installed on the edge of the tank 7, the locking bolt 41 is screwed, the inner and outer side walls of the tank 7 abut against the end wall of the locking bolt 41 and the end wall of the groove 43 respectively, the base block 3 can be fixedly installed on the tank 7, and the base block 3 does not affect the forming platform 8.

[0035] With reference to Figure 3 and Figure 4 The clamping assembly 4 further comprises the abutting block 42, the abutting block 42 is rotationally connected to the end of the locking bolt 41 facing the tank 7, when the base block 3 is installed on the edge of the tank 7, the abutting block 42 abuts against the outer wall of the tank 7.

[0036] With reference to Figure 3 and Figure 4 The abutting block 42 is used to replace the end of the locking bolt 41 to abut against the outer wall of the tank 7, the base block 3 can increase the contact area with the outer wall of the tank 7 and reduce the damage to the outer wall of the tank 7.

[0037] With reference to Figure 3 and Figure 4The measuring assembly 6 comprises a float block 61, a float strip 62, a mounting rod 63, a contact block 64 and two proximity switches 65. The float block 61 and the float strip 62 can float on the liquid photosensitive resin. The second plate 32 is provided with a through slot 321. The float strip 62 is vertically arranged and slidably arranged in the through slot 321. The float block 61 is fixedly arranged at the bottom end of the float strip 62. The contact block 64 is arranged on the side wall of the float strip 62. The contact block 64 and the float block 61 are arranged on the upper side and the lower side of the through slot 321 respectively. The mounting rod 63 is arranged on the top surface of the second plate 32 in the vertical direction. The two proximity switches 65 are arranged at different height positions of the mounting rod 63. The contact block 64 is arranged between the two proximity switches 65. When the contact block 64 abuts against the upper proximity switch 65, the pump body 1 stops running. When the contact block 64 abuts against the lower proximity switch 65, the pump body 1 starts running.

[0038] With reference to Figure 3 and Figure 4 When the float block 61 and the float strip 62 move downward and drive the contact block 64 to abut against the lower proximity switch 65, it indicates that the liquid surface in the trough 7 has dropped to the lowest height at which the photosensitive resin needs to be added. At this time, the pump body 1 starts running to add the photosensitive resin into the trough 7. During the process of adding the photosensitive resin, the liquid surface rises. The float block 61 and the float strip 62 move upward and drive the contact block 64 to finally abut against the lower proximity switch 65. At this time, the pump body 1 stops running and no longer adds the photosensitive resin into the trough 7, so as to prevent the photosensitive resin from overflowing due to excessive addition.

[0039] With reference to Figure 3 and Figure 4 The limiting assembly 5 comprises a through hole 51 and a limiting piece. The through hole 51 is vertically arranged on the second plate 32. The through hole 51 is used for allowing the pipeline 11 to pass through. The limiting piece is used for limiting the pipeline 11 passing through the through hole 51. The bottom end of the pipeline 11 passes through the through hole 51. The pipeline 11 is opposite to the trough 7 and is used for guiding the photosensitive resin into the trough 7.

[0040] With reference to Figure 3 and Figure 4 The limiting piece comprises a spring 52, a pressing block 53 and a fixed block 54. The fixed block 54 is fixedly arranged on the top surface of the second plate 32. The pressing block 53 is slidably arranged on the top surface of the second plate 32 in the horizontal direction. The two ends of the spring 52 are arranged on the fixed block 54 and the pressing block 53 respectively. The pressing block 53 is used for abutting against the pipeline 11. The pressing block 53 abuts against the pipeline 11 under the action of the spring 52. The pipeline 11 is limited by abutting against the pipeline 11.

[0041] With reference to Figure 3 and Figure 4The limiting member further comprises a fixing frame 55, which is arranged in a C shape, and the two ends of the fixing frame 55 are fixedly arranged on the top surface of the second plate 32. The fixing frame 55 is located directly above the through hole 51, the pressing block 53 is located on the side of the through hole 51 away from the trough 7, the top end of the fixing frame 55 is located above the pressing block 53, and the fixing frame 55 is used for abutting against the pipeline 11.

[0042] With reference to Figure 3 and Figure 4 Figure 3 Figure 4 Figure 3 Figure 4 The pressing block 53 cooperates with the fixing frame 55 to limit the bending direction of the pipeline 11. The part of the pipeline 11 located in the through hole 51 and below the through hole 51 will be inclined toward the side of the inner wall of the trough 7. The part of the pipeline 11 located above the through hole 51 can be bent toward the side away from the trough 7. The pipeline 11 can not affect the forming platform 8 of the sensitive resin 3D printer.

[0043] Of course, the above is only a typical example of the present application, and in addition to this, the present application can have other various specific embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A feeding mechanism of a photosensitive resin 3D printer, characterized in that: The base block (3) is provided with a clamping assembly (4), a controller, a limiting assembly (5) and a measuring assembly (6), the base block (3) is installed on the edge of a tank (7) through the clamping assembly (4), the inlet of the pump body (1) is communicated with the photosensitive resin raw material (2), the outlet of the pump body (1) is provided with a pipeline (11), the limiting assembly (5) is used for limiting the liquid outlet end of the pipeline (11) and making the liquid outlet end downwardly face the tank (7), the measuring assembly (6) is used for detecting the liquid level of the photosensitive resin in the tank (7), and the controller is used for receiving the signal of the measuring assembly (6) and controlling the operation of the pump body (1).

2. The feeding mechanism of a photosensitive resin 3D printer according to claim 1, characterized in that: The base block (3) comprises a first plate (31) and a second plate (32) which are arranged perpendicularly to each other, the clamping assembly (4) comprises a locking bolt (41), an abutting block (42) and a groove (43), the locking bolt (41) is threadedly connected to the first plate (31), the groove (43) is formed on the inner side of the second plate (32) facing the first plate (31), when the base block (3) is installed on the edge of the tank (7), the first plate (31) faces the outer side wall of the tank (7), the top end of the edge of the tank (7) is located in the groove (43) and abuts against the end wall of the groove (43) away from the first plate (31), and the end of the locking bolt (41) abuts against the outer wall of the tank (7).

3. The feeding mechanism of a photosensitive resin 3D printer according to claim 2, characterized in that: The clamping assembly (4) further comprises the abutting block (42), the abutting block (42) is rotationally connected to the end of the locking bolt (41) facing the tank (7), when the base block (3) is installed on the edge of the tank (7), the abutting block (42) abuts against the outer wall of the tank (7).

4. The feeding mechanism of a photosensitive resin 3D printer according to claim 2, characterized in that: The measuring assembly (6) comprises a floating block (61), a floating strip (62), a mounting rod (63), a contact block (64) and two proximity switches (65), the floating block (61) and the floating strip (62) can float on the liquid photosensitive resin, the second plate (32) is provided with a through groove (321), the floating strip (62) is vertically arranged and slidably arranged in the through groove (321), the floating block (61) is fixedly arranged at the bottom end of the floating strip (62), the contact block (64) is arranged on the side wall of the floating strip (62), the contact block (64) and the floating block (61) are arranged on the upper side and the lower side of the through groove (321) respectively, the mounting rod (63) is vertically arranged on the top surface of the second plate (32), the two proximity switches (65) are arranged at different height positions of the mounting rod (63), and the contact block (64) is located between the two proximity switches (65); when the contact block (64) abuts against the upper proximity switch (65), the pump body (1) stops operating, and when the contact block (64) abuts against the lower proximity switch (65), the pump body (1) starts operating.

5. The feeding mechanism of a photosensitive resin 3D printer according to claim 2, characterized in that: The limiting component (5) comprises a through hole (51) and a limiting part, the through hole (51) is vertically arranged on the second plate (32), the through hole (51) is for the pipeline (11) to pass through, and the limiting part is used for limiting the pipeline (11) passing through the through hole (51). 6.The feeding mechanism of a photosensitive resin 3D printer according to claim 5, characterized in that: The limiting part comprises a spring (52), a pressing block (53) and a fixed block (54), the fixed block (54) is fixedly arranged on the top surface of the second plate (32), the pressing block (53) is horizontally arranged on the top surface of the second plate (32), the two ends of the spring (52) are respectively arranged on the fixed block (54) and the pressing block (53), and the pressing block (53) is used for abutting against the pipeline (11).

7. The feeding mechanism of a photosensitive resin 3D printer according to claim 6, characterized in that: The limiting part further comprises a fixed frame (55), the fixed frame (55) is arranged in a C shape, the two ends of the fixed frame (55) are fixedly arranged on the top surface of the second plate (32), the fixed frame (55) is located directly above the through hole (51), the pressing block (53) is located on the side of the through hole (51) away from the chute (7), and the top end of the fixed frame (55) is located above the pressing block (53) and is used for abutting against the pipeline (11).

Images