Pressure detection device at bottom of photocuring 3D printer

Abstract

The utility model discloses a pressure detection device at the bottom of a photocuring 3D printer, and particularly relates to the technical field of 3D printers, the pressure detection device comprises a supporting table, a mounting groove is formed in the surface of the supporting table, a mounting plate is arranged in the mounting groove, a thin film pressure sensor is arranged on the surface of the mounting plate, and a base plate is arranged at the top of the thin film pressure sensor; adjustable supporting structures are arranged at the four corners of the supporting table, each adjustable supporting structure comprises a supporting frame, rectangular openings are formed in the four corners of the supporting table in a penetrating mode, and the supporting frames are fixedly installed in the rectangular openings. According to the pressure detection device, the overall levelness of the pressure detection device can be ensured, so that the offset of the resin pool at the top caused by unstable levelness is avoided, the printing effect of a printer is improved, the pressure detection precision can be ensured, an operator can conveniently maintain and overhaul the film pressure sensor, and the working efficiency is improved. The use effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, and more specifically, to a pressure detection device at the bottom of a light-curing 3D printer. Background Art

[0002] The photocuring 3D printer uses ultraviolet light or other light sources in a specific wavelength range to irradiate liquid photosensitive resin and induce a photochemical reaction, so that the photosensitive resin in the area irradiated by the light source is solidified from the liquid and the object to be formed is obtained after curing layer by layer. During printing, the pressure detection device at the bottom of the photocuring printer can monitor and adjust the interlayer pressure during the printing process to ensure printing quality.

[0003] After searching, a Chinese patent with publication number CN216760823U discloses a light-curing 3D printer with a pressure detection device. The advantage of this structure is that a pressure sensor is arranged between the resin pool and the platen, so that the gravity of the resin pool is applied to the detection end of the pressure sensor to avoid damaging the printed body and the resin pool.

[0004] However, in actual use, it is difficult to ensure the horizontal placement of the table in the structure. Once the table is on an uneven table or environment, the resin pool on top of the pressure sensor will shift due to horizontal instability during printing, which not only affects the printing effect of the printer, but also affects the accuracy of the final pressure detection. In view of this, the utility model proposes a pressure detection device at the bottom of a light-curing 3D printer. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a pressure detection device at the bottom of a light-curing 3D printer to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a pressure detection device at the bottom of a light-curing 3D printer, comprising a support table, a mounting groove is provided on the surface of the support table, a mounting plate is arranged inside the mounting groove, a thin film pressure sensor is arranged on the surface of the mounting plate, and a pad is installed on the top of the thin film pressure sensor.

[0007] It can be seen that in the above structure, the resin pool in the printer is placed on the pad, and during printing, the printing pressure can be detected in real time through the thin film pressure sensor on the surface of the mounting plate to achieve the effect of pressure detection.

[0008] In order to place the support table horizontally and ensure the printing effect and pressure detection effect of the printer during printing, preferably, adjustable support structures are provided at the four corners of the support table, and the adjustable support structure includes a support frame, and rectangular openings are opened through the four corners of the support table, and the support frame is fixedly installed inside the rectangular opening, and a movable block is provided inside the support frame, and an adjusting screw is provided at the top of the movable block, and an adjusting block is provided at the top of the adjusting screw, and the top of the adjusting screw extends to the top of the support frame and is connected to the adjusting block, and the adjusting screw is threadedly connected to the support frame, and a support rod is provided at the bottom of the movable block, and a support seat is provided at the bottom end of the support rod, and the support rod extends to the bottom of the support frame and is connected to the support seat, and the support rod is slidably connected to the support frame, and an anti-slip pad is provided at the bottom of the support seat, and guide grooves are provided on both inner walls of the support frame, and guide blocks are slidably provided inside the guide grooves, and two guide blocks are respectively fixedly installed at both ends of the movable block.

[0009] In order to facilitate the removal of the thin film pressure sensor on the mounting plate from the interior of the mounting groove for maintenance, preferably, an extension groove is provided on the front side of the support platform, the extension groove is connected to the mounting groove provided on the support platform, and a pull plate is provided inside the extension groove at one end of the mounting plate, the pull plate is installed inside the extension groove by screws, and a handle is provided on the surface of the pull plate.

[0010] In order to facilitate the separation of the pad and the mounting plate and then to inspect the film pressure sensor, preferably, the surface of the mounting plate is provided with slide grooves on both sides of the film pressure sensor, and two slide bars are provided at the bottom of the pad, and the slide bars are slidably connected inside the slide grooves.

[0011] Technical effects and advantages of the utility model:

[0012] 1. By setting an adjustable support structure, the adjustment block drives the adjustment screw inside the support frame to rotate, so that the movable block slides up and down inside the support frame, and the movable block drives the support rod to move up and down, thereby driving the support seat to adjust up and down, so that the level of the entire device can be adjusted according to the level of the placement position to ensure that the support table is in a horizontal state, which not only improves the printing accuracy of the printer, but also prevents the resin pool from being offset due to the unstable level of the device, thereby improving the accuracy of pressure measurement;

[0013] 2. By releasing the screws at the pull plate and pulling the pull plate out from the inside of the extension slot through the handle, the pull plate drives the mounting plate to be pulled out from the inside of the mounting slot. At the same time, through the cooperation of the slide bar and the slide slot, the pad is separated from the surface of the mounting plate, which makes it convenient for operators to maintain and repair the film pressure sensor on the surface of the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the surface structure of the support platform of the utility model.

[0016] Figure 3 It is a schematic diagram of the connection structure between the backing plate and the mounting plate of the utility model.

[0017] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0018] Figure 5 For the utility model Figure 1 Schematic diagram of the partially enlarged structure.

[0019] Figure 6 It is a schematic diagram of the internal structure of the support frame of the utility model.

[0020] The accompanying drawings are marked as follows: 1. support platform; 2. mounting groove; 3. mounting plate; 4. film pressure sensor; 5. pad; 6. support frame; 7. movable block; 8. adjusting screw; 9. adjusting block; 10. support rod; 11. support seat; 12. extension groove; 13. pull plate; 14. handle; 15. slide groove; 16. slide bar; 17. anti-slip pad; 18. guide groove; 19. guide block. DETAILED DESCRIPTION

[0021] 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.

[0022] As attached Figure 1-6 A pressure detection device at the bottom of a light-curing 3D printer is shown, comprising a support table 1, a mounting groove 2 is provided on the surface of the support table 1, a mounting plate 3 is arranged inside the mounting groove 2, a thin film pressure sensor 4 is arranged on the surface of the mounting plate 3, and a pad 5 is installed on the top of the thin film pressure sensor 4.

[0023] Specifically, in this structure, the pressure detection device is located at the bottom of the light-curing 3D printer and can be used to perform pressure detection on the resin pool in the printer. The resin pool of the printer can be detachably placed on the pad 5. During the printing process, the thin film pressure sensor 4 on the surface of the mounting plate 3 is used for pressure detection. The thin film pressure sensor 4 has a wide pressure detection range and can accurately reflect the actual pressure distribution inside the resin pool.

[0024] In a specific embodiment, as shown in the attached Figure 1 , 5 As shown in , 6, adjustable supporting structures are provided at the four corners of the support platform 1, and the adjustable supporting structure includes a supporting frame 6. Rectangular openings are opened through the four corners of the support platform 1, and the supporting frame 6 is fixedly installed inside the rectangular opening. A movable block 7 is provided inside the supporting frame 6, and an adjusting screw 8 is provided on the top of the movable block 7. An adjusting block 9 is provided on the top of the adjusting screw 8. The top of the adjusting screw 8 extends to the top of the supporting frame 6 and is connected to the adjusting block 9. The adjusting screw 8 is threadedly connected to the supporting frame 6. A supporting rod 10 is provided at the bottom of the movable block 7, and a supporting seat 11 is provided at the bottom of the supporting rod 10. The support rod 10 extends to the bottom of the supporting frame 6 and is connected to the supporting seat 11. The support rod 10 is slidably connected to the supporting frame 6, and an anti-slip pad 17 is provided at the bottom of the supporting seat 11. Guide grooves 18 are provided on both inner walls of the supporting frame 6, and guide blocks 19 are slidably provided inside the guide grooves 18. The two guide blocks 19 are fixedly installed at the two ends of the movable block 7 respectively.

[0025] Specifically, in this structure, the device is at the bottom of the printer. During printing, the printer needs to ensure good levelness. Once the printer is in an uneven position and needs to be adjusted horizontally, the operator can drive the adjusting screw 8 inside the support frame 6 to rotate through the adjusting block 9, so that the movable block 7 slides up and down inside the support frame 6, and the movable block 7 drives the support rod 10 to move up and down, thereby driving the support seat 11 to adjust up and down, so that the overall level of the device can be adjusted according to the level of the desktop on which it is placed, ensuring that the support table 1 is in a horizontal state;

[0026] Furthermore, when the movable block 7 slides inside the support frame 6 , the guide block 19 can slide inside the guide groove 18 , thereby ensuring the stability of the sliding of the movable block 7 inside the support frame 6 .

[0027] In a specific embodiment, as shown in the attached Figure 1 , 2 As shown in FIG. 3 , an extension groove 12 is provided on the front side of the support platform 1. The extension groove 12 is connected to the mounting groove 2 provided on the support platform 1. A pull plate 13 is provided at one end of the mounting plate 3 inside the extension groove 12. The pull plate 13 is installed inside the extension groove 12 by screws, and a handle 14 is provided on the surface of the pull plate 13.

[0028] Specifically, in this structure, the operator can remove the screws at the pull plate 13 and pull the pull plate 13 out from the inside of the extension groove 12 through the handle 14. The pull plate 13 then drives the mounting plate 3 to be pulled out from the inside of the mounting groove 2, so that the operator can conveniently maintain and repair the film pressure sensor 4 on the surface of the mounting plate 3.

[0029] In a specific embodiment, as shown in the attached Figure 3 , 4 As shown, the surface of the mounting plate 3 is provided with slide grooves 15 on both sides of the thin film pressure sensor 4 , and the bottom of the pad 5 is provided with two slide bars 16 , which are slidably connected inside the slide grooves 15 .

[0030] Specifically, in this structure, the pad 5 can be installed on the surface of the mounting plate 3 by sliding the slide bar 16 inside the slide groove 15, or the pad 5 can be separated from the surface of the mounting plate 3, so that the film pressure sensor 4 on the surface of the mounting plate 3 can be leaked out for inspection and maintenance. The function of the pad 5 is to prevent the resin pool of the printer from directly contacting the film pressure sensor 4 and causing damage to the film pressure sensor 4. In the process of inspecting and repairing the film pressure sensor 4, the pad 5 can be slid out from the surface of the mounting plate 3 to facilitate the inspection and maintenance of the film pressure sensor 4.

[0031] Working principle of this utility model:

[0032] When the above structure is used, first, the pressure detection device is at the bottom of the printer, and the resin pool in the printer is detachably mounted on the surface of the pad 5. The pad 5 can prevent the resin pool from directly contacting the film pressure sensor 4 and causing wear. During printing, the film pressure sensor 4 on the surface of the mounting plate 3 can detect the printing resin pressure inside the resin pool in real time. The model of the film pressure sensor 4 is DF9-40;

[0033] During the printing process, in order to ensure that the printer is in a good horizontal state, the operator drives the adjusting screw 8 inside the support frame 6 to rotate through the adjusting block 9, so that the movable block 7 slides up and down inside the support frame 6, and the movable block 7 drives the support rod 10 to move up and down, thereby driving the support seat 11 to adjust up and down, so that the level of the entire device can be adjusted according to the level of the placement position, ensuring that the support table 1 is in a horizontal state, and improving the accuracy of the printer printing;

[0034] When the film pressure sensor 4 needs to be maintained and repaired, the operator needs to loosen the screws at the pull plate 13 and pull the pull plate 13 out from the inside of the extension groove 12 through the handle 14. The pull plate 13 then drives the mounting plate 3 to be pulled out from the inside of the mounting groove 2. At the same time, through the cooperation of the slide bar 16 and the slide groove 15, the pad 5 is separated from the surface of the mounting plate 3, which makes it convenient for the operator to maintain and repair the film pressure sensor 4 on the surface of the mounting plate 3.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure detection device at the bottom of a light-curing 3D printer, comprising a support platform (1), characterized in that: The support platform (1) has a mounting groove (2) on its surface, a mounting plate (3) is arranged inside the mounting groove (2), a thin film pressure sensor (4) is arranged on the surface of the mounting plate (3), a pad (5) is installed on the top of the thin film pressure sensor (4), and adjustable supporting structures are arranged at the four corners of the support platform (1); The adjustable support structure comprises a support frame (6), rectangular openings are formed through the four corners of the support platform (1), the support frame (6) is fixedly mounted inside the rectangular opening, a movable block (7) is arranged inside the support frame (6), an adjusting screw (8) is arranged at the top of the movable block (7), an adjusting block (9) is arranged at the top of the adjusting screw (8), a support rod (10) is arranged at the bottom of the movable block (7), and a support seat (11) is arranged at the bottom end of the support rod (10).

2. The pressure detection device at the bottom of the light-curing 3D printer according to claim 1, characterized in that: An extension groove (12) is provided on the front side of the support platform (1), the extension groove (12) is connected to the mounting groove (2) provided on the support platform (1), a pull plate (13) is provided at one end of the mounting plate (3) inside the extension groove (12), the pull plate (13) is installed inside the extension groove (12) by means of screws, and a handle (14) is provided on the surface of the pull plate (13).

3. The pressure detection device at the bottom of the light-curing 3D printer according to claim 1, characterized in that: The surface of the mounting plate (3) is provided with slide grooves (15) on both sides of the thin film pressure sensor (4), and the bottom of the pad (5) is provided with two slide bars (16), and the slide bars (16) are slidably connected inside the slide grooves (15).

4. The pressure detection device at the bottom of the light-curing 3D printer according to claim 1, characterized in that: The top end of the adjusting screw (8) extends to the top of the supporting frame (6) and is connected to the adjusting block (9), and the adjusting screw (8) is threadedly connected to the supporting frame (6).

5. The pressure detection device at the bottom of the light-curing 3D printer according to claim 1, characterized in that: The support rod (10) extends to the bottom of the support frame (6) and is connected to the support seat (11); the support rod (10) is slidably connected to the support frame (6); and an anti-slip pad (17) is provided at the bottom of the support seat (11).

6. The pressure detection device at the bottom of the light-curing 3D printer according to claim 1, characterized in that: Both inner walls of the support frame (6) are provided with guide grooves (18), and guide blocks (19) are slidably arranged inside the guide grooves (18). The two guide blocks (19) are respectively fixedly mounted at the two ends of the movable block (7).

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