Intelligent polymer powder material 3DP printer

Abstract

The invention belongs to the technical field of 3DP printing, and discloses an intelligent polymer powder material 3DP printer which comprises a powder laying assembly, the powder laying assembly comprises a powder falling groove fixedly installed at the bottom end of a connecting frame, a screen is fixedly installed in the powder falling groove, and a knocking rod is rotationally connected to the position, located on one side of the screen, in the powder falling groove; the powder screening device has the beneficial effects that powder is preliminarily screened, so that the particle size of the powder is kept basically consistent, the consistency and quality of products are improved, and the final products are more stable and reliable; and before powder laying, the infrared lamp moves upwards, the powder and the powder at the top end of the inner wall of the powder falling groove are dried, the powder and the interior of the space are kept dry, and therefore the phenomena that the powder is internally caked and the powder is adhered to the inner wall of the powder falling groove are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of 3DP printing, and in particular relates to an intelligent polymer powder material 3DP printer. Background Art

[0002] Intelligent polymer powder material 3DP printer is a high-end manufacturing equipment that combines 3D printing technology and polymer materials. This printer is mainly used in the field of additive manufacturing and can print polymer powder material products with complex structures and fine features. The following are some key features and applications;

[0003] Since 3DP printers need to spread powder when in use, but it is inconvenient to adjust the particle size and humidity of the powder during the spreading process, the powder layer is uneven during the spreading process, which will cause pores or other defects in the printed product. When the humidity is not properly controlled, the fluidity of the powder will deteriorate, resulting in a decrease in printing quality. Summary of the invention

[0004] The present invention aims at the problem that in the prior art, since the 3DP printer needs to spread powder when in use, and since it is inconvenient to adjust the particle size and humidity of the powder during the spreading process, the powder layer during the spreading process is uneven, which may cause pores or other defects in the printed product, and improper humidity control may cause the fluidity of the powder to deteriorate, thereby causing the printing quality to decline. The present invention proposes the following technical solution:

[0005] An intelligent polymer powder material 3DP printer, comprising: a shell, a second transverse linear guide rail is symmetrically fixedly installed on the inner wall of the shell, a connecting frame is fixedly installed on the top of the sliders of two second transverse linear guide rails, a first transverse linear guide rail is fixedly installed on the edge of the inner wall of the second transverse linear guide rail, a longitudinal linear guide rail is fixedly installed on the top of the sliders of the two first transverse linear guide rails, a print head is fixedly installed on the top of the slider of the longitudinal linear guide rail, a connecting frame is installed at the inner wall of the shell at the position of the print head and the bottom of the connecting frame, and a powder spreading component is fixedly installed on the bottom of the connecting frame;

[0006] The powder spreading assembly includes a powder dropping trough fixedly mounted on the bottom end of the connecting frame, a screen is fixedly mounted inside the powder dropping trough, a knocking rod is rotatably connected to a position on one side of the screen inside the powder dropping trough, a powder dropping trough roller is rotatably connected to an outlet position of the powder dropping trough, a side panel is symmetrically mounted on one end surface of the powder dropping trough, and an infrared baking lamp is connected to the side panel for sliding up and down movement.

[0007] As a preferred embodiment of the above technical solution, a printing platform that can move up and down is provided inside the powder box, and a recovery box is fixedly installed at one end of the printing platform inside the powder box.

[0008] As a preferred embodiment of the above technical solution, a lifting plate is symmetrically and movably connected inside the side panel, the infrared baking lamp is installed between the two lifting plates, an electric lifting rod is fixedly installed between the top of the lifting plate and the top of the inner wall of the side panel, one end of one of the lifting plates is installed with a horizontal bar, the bottom end of the horizontal bar is symmetrically embedded with a spring rod, and the bottom end of the spring rod is clamped with a movable bar.

[0009] As a preferred embodiment of the above technical solution, a mounting seat is fixedly installed on one side of one end of the side plate, a driving motor is fixedly installed inside the mounting seat, and a belt connecting structure is clamped and installed on the output shaft of the driving motor.

[0010] As a preferred embodiment of the above technical solution, the belt connection structure is composed of three pulleys and an internal serrated belt, the three pulleys are in a triangular relationship, one of the pulleys is fixedly connected to the powder dropping trough roller, the second pulley is fixedly connected to the knocking rod, and the third pulley is fixedly installed with a flip bar.

[0011] As a preferred embodiment of the above technical solution, a sponge pad is bonded to the top edge of the moving bar, and both end edges of the moving bar are provided with rounded corners.

[0012] As a preferred embodiment of the above technical solution, a scraping assembly is symmetrically installed at one end of the powder dropping trough, and the scraping assembly includes a mounting bar installed on one end surface of the powder dropping trough, a rotating bar is rotatably connected between the two mounting bars through a circular roller, and the circular roller is installed at both ends of the rotating bar, and a connecting structure is symmetrically embedded and installed at the bottom end of the rotating bar, and a scraper is fixedly installed at the bottom end of the connecting structure.

[0013] As a preferred embodiment of the above technical solution, the round roller of the rotating bar is clamped with a gear at one side of the mounting bar, the outer side of the gear is meshed with a sawtooth bar that moves up and down, and an electric lifting column is embedded in the top of the sawtooth bar.

[0014] As a preferred embodiment of the above technical solution, the top end of the electric lifting column is fixedly installed on the top end of the powder dropping trough, and the bottom end edge of the scraper is symmetrically chamfered.

[0015] The beneficial effects of the present invention are:

[0016] (1) Preliminary screening of the powder keeps the particle size of the powder basically consistent, which helps to improve the consistency and quality of the product and make the final product more stable and reliable;

[0017] (2) Before spreading the powder, the infrared lamp moves upward to dry the powder and the powder on the top of the inner wall of the powder drop trough to keep the powder and the space dry, so as to avoid internal agglomeration of the powder and adhesion of the powder to the inner wall of the powder drop trough;

[0018] (3) The continuous rotation of the powder trough roller forms a continuous and uniform powder supply, which can avoid the problem of uneven powder accumulation and ensure that each part can be fully covered; the high-frequency and low-amplitude oscillation of the powder spreading scraper can break up the powder again to avoid agglomeration, and can also pat the powder pile to avoid excessive downward pressure causing damage to the powder spreading in the printing area. The combination of the two can ensure the uniformity of powder spreading and improve the quality of 3DP printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure diagram of a smart polymer powder material 3DP printer in Example 1 is shown;

[0020] Figure 2 Shown is a cross-sectional view of the housing in Example 1;

[0021] Figure 3 The figure shows a schematic diagram of the installation structure of the longitudinal linear guide rail in Example 1;

[0022] Figure 4 The figure shows a schematic diagram of the installation structure of the connecting frame in Example 1;

[0023] Figure 5 The figure shows a schematic diagram of the structure of the powder spreading component in Example 1;

[0024] Figure 6 The figure shows a schematic diagram of the installation structure of the driving motor in Example 1;

[0025] Figure 7 What is shown is a schematic diagram of the structure of the scraping assembly in Example 1.

[0026] In the figure: 1. shell; 2. powder box; 3. longitudinal linear guide; 4.; 5. first transverse linear guide; 6. print head; 7. second transverse linear guide; 8. connecting frame; 9. powder spreading assembly; 91. powder dropping trough; 92. side plate; 93. lifting plate; 94. infrared baking lamp; 95. horizontal bar; 96. spring rod; 97. moving bar; 98. mounting seat; 99. driving motor; 910. belt connecting structure; 911. knocking rod; 912. screen; 913. flipping bar; 914. powder dropping trough roller; 915. electric lifting rod; 10. scraping assembly; 1001. mounting bar; 1002. rotating bar; 1003. connecting structure; 1004. scraper; 1005. gear; 1006. sawtooth bar; 1007. electric lifting column. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0028] Example 1

[0029] The present invention provides an intelligent polymer powder material 3DP printer, such as Figures 1 to 7 As shown, it comprises: a shell 1, a second transverse linear guide 7 is symmetrically fixedly installed on the inner wall of the shell 1, a connecting frame 8 is fixedly installed on the top of the sliders of the two second transverse linear guides 7, a first transverse linear guide 5 is fixedly installed on the edge of the inner wall of the second transverse linear guide 7, a longitudinal linear guide 3 is fixedly installed on the top of the sliders of the two first transverse linear guides 5, a print head 6 is fixedly installed on the top of the slider of the longitudinal linear guide 3, a support frame 4 is installed at the inner wall of the shell 1 at the position of the print head 6 and the bottom of the connecting frame 8, and a powder spreading component 9 is fixedly installed at the bottom of the connecting frame 8;

[0030] The powder spreading assembly 9 includes a powder dropping trough 91 fixedly mounted on the bottom end of the connecting frame 8, a screen 912 being fixedly mounted inside the powder dropping trough 91, a knocking rod 911 being rotatably connected to one side of the screen 912 inside the powder dropping trough 91, a powder dropping trough roller 914 being rotatably connected to the outlet of the powder dropping trough 91, a side panel 92 being symmetrically mounted on one end surface of the powder dropping trough 91, an infrared baking lamp 94 being slidably connected to the inside of the side panel 92 up and down.

[0031] A printing platform that moves up and down is arranged inside the powder box 2, and a recovery box is fixedly installed at one end of the printing platform inside the powder box 2;

[0032] The printing platform makes it easy to print objects, and excess powder during the printing process enters the recycling box for collection, reducing the difficulty of collecting powder.

[0033] like Figure 5 and Figure 6 As shown, the side panels 92 are symmetrically and movably connected with lifting plates 93, the infrared roasting lamp 94 is installed between the two lifting plates 93, and an electric lifting rod 915 is fixedly installed between the top of the lifting plate 93 and the top of the inner wall of the side panel 92, and a horizontal bar 95 is installed at one end of one of the lifting plates 93, and a spring rod 96 is symmetrically embedded and installed at the bottom end of the horizontal bar 95, and a moving bar 97 is installed at the bottom end of the spring rod 96;

[0034] After the electric lifting rod 915 is connected to the power supply and starts to run, the electric lifting rod 915 drives the lifting plate 93 to move during operation. When the lifting plate 93 moves, the height of the infrared baking lamp 94 is changed, thereby adjusting the distance between the infrared baking lamp 94 and the lifting platform inside the powder box 2. Moreover, since the flip bar 913 contacts the moving bar 97 after rotation, the spring rod 96 is stretched by the moving bar 97 at this time. In this way, the position of the infrared baking lamp 94 can be easily changed, which reduces the difficulty of changing the position of the infrared baking lamp 94. Moreover, after the flip bar 913 and the moving bar 97 are separated, since the moving bar 97 is reset by the spring rod 96, the spring rod 96 vibrates due to the rapid reset, and the infrared baking lamp 94 is driven to vibrate during the vibration process to prevent the powder from adhering to the surface of the infrared baking lamp 94.

[0035] like Figure 5 and Figure 6 As shown, a mounting seat 98 is fixedly mounted on one end of the side plate 92, a driving motor 99 is fixedly mounted inside the mounting seat 98, and a belt connecting structure 910 is mounted on the output shaft of the driving motor 99;

[0036] The driving motor 99 can be easily fixed by the mounting seat 98, and the belt connecting structure 910 can be driven to operate by the driving motor 99, thereby reducing the operating difficulty of the belt connecting structure 910;

[0037] like Figure 5 and Figure 6 As shown, the belt connection structure 910 is composed of three pulleys and an inner serrated belt, and the three pulleys are in a triangular relationship, one of the pulleys is fixedly connected to the powder dropping groove roller 914, the second pulley is fixedly connected to the knocking rod 911, and the third pulley is fixedly installed with a flip bar 913;

[0038] The inner serrated belt drives the three pulleys to rotate synchronously, and the three pulleys drive the knocking rod 911, the flip bar 913 and the powder dropping groove roller 914 to rotate synchronously, thereby changing the difficulty of the synchronous rotation of the knocking rod 911, the flip bar 913 and the powder dropping groove roller 914.

[0039] like Figure 5 and Figure 6 As shown, a sponge pad is bonded to the top edge of the moving bar 97, and both ends of the moving bar 97 have rounded corners;

[0040] The impact force between the flip bar 913 and the moving bar 97 is reduced by the action of the sponge pad, and the separation between the flip bar 913 and the moving bar 97 is facilitated by the action of the rounded corners, thereby changing the difficulty of separating the flip bar 913 and the moving bar 97.

[0041] like Figure 4 and Figure 7 As shown, a scraping assembly 10 is symmetrically installed at one end of the powder dropping groove 91, and the scraping assembly 10 includes a mounting bar 1001 installed on one end surface of the powder dropping groove 91, and a rotating bar 1002 is rotatably connected between the two mounting bars 1001 through a round roller, and the round roller is installed at both ends of the rotating bar 1002, and a connecting structure 1003 is symmetrically embedded and installed at the bottom end of the rotating bar 1002. The connecting structure 1003 is composed of a rectangular sleeve, a rectangular column and a positioning pin, wherein the rectangular column is slidably connected to the inside of the rectangular sleeve and the rectangular sleeve and the rectangular column are fixed by the positioning pin, which is used for quickly disassembling and replacing the scraper 1004, and the scraper 1004 is fixedly installed at the bottom end of the connecting structure 1003;

[0042] The connection structure 1003 is connected to a power source and drives the scraper 1004 to move when in operation. When the scraper 1004 moves, it contacts the powder on the top of the printing platform, thereby flattening the powder on the top of the printing platform, thereby improving the quality of subsequent 3DP printing;

[0043] like Figure 4 and Figure 7 As shown, the round roller of the rotating bar 1002 is located at one side of the mounting bar 1001 and is clamped with a gear 1005, the outer side of the gear 1005 is meshedly connected with a sawtooth bar 1006 that moves up and down, and the top of the sawtooth bar 1006 is embedded with an electric lifting column 1007;

[0044] The electric lifting column 1007 is connected to a power source and drives the sawtooth bar 1006 to move when it is in operation. When the sawtooth bar 1006 moves, the meshing relationship between it and the gear 1005 drives the gear 1005 to rotate. When the gear 1005 rotates, it drives the rotating bar 1002 to rotate, which can facilitate the rotation of the rotating bar 1002 and change the rotation difficulty of the rotating bar 1002. The electric lifting column 1007 can quickly return to the original position so that the rotating bar 1002 drives the scraper 1004 to swing quickly. The rapid and regular swinging of the scraper 1004 can avoid the problem of uneven powder accumulation, and can also avoid excessive powder accumulation from damaging the printing area, thereby ensuring the quality and uniformity of the powder spreading.

[0045] like Figure 4 and Figure 7 As shown, the top of the electric lifting column 1007 is fixedly installed at the top of the powder dropping trough 91, and the bottom edge of the scraper 1004 is symmetrically chamfered;

[0046] The chamfered design makes it easier for the scraper 1004 to scrape the powder laid on the printing platform, ensuring uniformity, and the top of the electric lifting column 1007 is fixedly installed on the top of the powder dropping trough 91, thereby achieving the purpose of increasing the stability of the electric lifting column 1007 after installation and preventing the electric lifting column 1007 from shaking during use.

[0047] Working principle: During actual use of the device, the powder box 2 is loaded into the housing 1, and the second transverse linear guide rail 7 is started. When the second transverse linear guide rail 7 is running, it drives the connecting frame 8 to move. At this time, the driving motor 99 is started. When the driving motor 99 is running, it can drive the belt connecting structure 910 to operate. When the belt connecting structure 910 rotates synchronously, it drives the knocking rod 911, the flip bar 913 and the powder dropping groove roller 914 to rotate synchronously, thereby changing the difficulty of synchronous rotation among the knocking rod 911, the flip bar 913 and the powder dropping groove roller 914. The screen 912 is knocked, so that the powder at one end of the screen 912 enters the position of the powder dropping groove roller 914 along the screen 912, and the powder dropping groove roller 914 rotates, and the screened powder is collected when the powder dropping groove roller 914 rotates, and the powder is tilted along the notch of the powder dropping groove roller 914 when it continues to rotate. At the same time, in this process, the flip bar 913 rotates and contacts the moving bar 97. At this time, the spring rod 96 is driven to move by the moving bar 97, and at this time, the electric lifting rod 915 is connected to the power supply and starts to operate. When the electric lifting rod 915 operates, it drives the lifting plate 93 to move, and the lifting plate 93 moves When the infrared lamp 94 is moved, the height of the infrared lamp 94 is changed, thereby adjusting the distance between the infrared lamp 94 and the lifting platform inside the powder box 2. Since the flip bar 913 contacts the moving bar 97 after rotation, the moving bar 97 drives the spring rod 96 to stretch. The above method can facilitate the change of the position of the infrared lamp 94, and the moved infrared lamp 94 is used to dry the laid powder. By screening the powder, the particle size of the powder is kept basically consistent, which helps to improve the consistency and quality of the product, making the final product more stable and reliable. In addition, under the irradiation of the infrared lamp 94, the powder Keeping the humidity of the powder consistent can avoid drying or agglomeration of the powder caused by absorbing or evaporating too much water, ensuring that the powder is uniform, without adhesion or uneven appearance problems, and maintaining consistent humidity can ensure the performance consistency of the powder under light, improve the reliability of powder material processing, and after the flip bar 913 and the moving bar 97 are separated, the moving bar 97 is reset by the spring rod 96, and the spring rod 96 vibrates when it is quickly reset, and the infrared baking lamp 94 is driven to vibrate slightly during the vibration process, so that the powder outside the infrared baking lamp 94 falls off, thereby preventing the powder from adhering to the surface of the infrared baking lamp 94;

[0048] During the resetting process, the infrared lamp 94 is reset. After the reset, the infrared lamp 94 is at the top of the powder dropping groove 91 and dries the powder at the top of the inner wall of the powder dropping groove 91, thereby preventing the powder from sticking inside the powder dropping groove 91, further facilitating the subsequent use of the powder.

[0049] At the same time, during this process, the connection structure 1003 is connected to the power supply and drives the scraper 1004 to move during operation. When the scraper 1004 moves, it contacts the powder on the top of the printing platform, so as to flatten the powder on the top of the printing platform, thereby improving the quality of subsequent 3DP printing. When it is necessary to adjust the distance between the scraper 1004 and the powder, the electric lifting column 1007 is connected to the power supply and drives the sawtooth bar 1006 to move during operation. When the sawtooth bar 1006 moves, the meshing relationship between it and the gear 1005 drives the gear 1005 to rotate. When the gear 1005 rotates, it drives the rotating bar 1002 to rotate, which can facilitate the rotation of the rotating bar 1002 and change the rotation difficulty of the rotating bar 1002. The rotating rotating bar 1002 drives the scraper 1004 to swing quickly. The fast and regular swinging of the scraper 1004 can avoid the problem of uneven powder accumulation, so that each part can be fully covered, thereby ensuring the quality and uniformity of the powder spreading.

[0050] Then start the longitudinal linear guide 3. When the longitudinal linear guide 3 is running, it drives the first transverse linear guide 5 to move. When the first transverse linear guide 5 moves, it drives the print head 6 to move longitudinally. The print head 6 that moves longitudinally and transversely sprays adhesive on the powder in the powder box 2, so that objects are printed on the printing platform.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An intelligent polymer powder material 3DP printer, characterized in that: include: A shell (1), wherein a second transverse linear guide rail (7) is symmetrically fixedly mounted on the inner wall of the shell (1), a connecting frame (8) is fixedly mounted on the top of the sliders of the two second transverse linear guide rails (7), a first transverse linear guide rail (5) is fixedly mounted on the edge of the inner wall of the second transverse linear guide rail (7), a longitudinal linear guide rail (3) is fixedly mounted on the top of the sliders of the two first transverse linear guide rails (5), a print head (6) is fixedly mounted on the top of the slider of the longitudinal linear guide rail (3), a support frame (4) is mounted on the inner wall of the shell (1) at the bottom of the print head (6) and the connecting frame (8), and a powder spreading assembly (9) is fixedly mounted on the bottom of the connecting frame (8); The powder spreading assembly (9) comprises a powder dropping trough (91) fixedly mounted at the bottom end of the connecting frame (8), a screen (912) fixedly mounted inside the powder dropping trough (91), a knocking rod (911) rotatably connected to a position on one side of the screen (912) inside the powder dropping trough (91), a powder dropping trough roller (914) rotatably connected to an outlet position of the powder dropping trough (91), a side plate (92) symmetrically mounted on one end surface of the powder dropping trough (91), and an infrared baking lamp (94) slidably connected to the inside of the side plate (92) up and down.

2. The intelligent polymer powder material 3DP printer according to claim 1, characterized in that: A printing platform that moves up and down is arranged inside the powder box (2), and a recovery box is fixedly installed at one end of the printing platform inside the powder box (2).

3. The intelligent polymer powder material 3DP printer according to claim 1, characterized in that: The side panels (92) are symmetrically and movably connected with lifting plates (93) inside, the infrared roasting lamp (94) is installed between the two lifting plates (93), an electric lifting rod (915) is fixedly installed between the top of the lifting plate (93) and the top of the inner wall of the side panel (92), a horizontal bar (95) is installed at one end of one of the lifting plates (93), a spring rod (96) is symmetrically embedded and installed at the bottom end of the horizontal bar (95), and a movable bar (97) is clamped and installed at the bottom end of the spring rod (96).

4. The intelligent polymer powder material 3DP printer according to claim 3, characterized in that: A mounting seat (98) is fixedly mounted on one side of one end of the side plate (92), a driving motor (99) is fixedly mounted inside the mounting seat (98), and a belt connection structure (910) is mounted on the output shaft of the driving motor (99).

5. The intelligent polymer powder material 3DP printer according to claim 4, characterized in that: The belt connection structure (910) is composed of three pulleys and an inner serrated belt, and the three pulleys are in a triangular relationship, one of the pulleys is fixedly connected to the powder dropping groove roller (914), the second pulley is fixedly connected to the knocking rod (911), and the third pulley is fixedly installed with a flip bar (913).

6. The intelligent polymer powder material 3DP printer according to claim 2, characterized in that: A sponge pad is bonded to the top edge of the moving strip (97), and both end edges of the moving strip (97) are provided with rounded corners.

7. The intelligent polymer powder material 3DP printer according to claim 1, characterized in that: A scraping assembly (10) is symmetrically mounted on one end of the powder dropping groove (91), and the scraping assembly (10) comprises a mounting bar (1001) mounted on one end surface of the powder dropping groove (91), a rotating bar (1002) is rotatably connected between the two mounting bars (1001) via a circular roller, and the circular roller is mounted on both ends of the rotating bar (1002), a connecting structure (1003) is symmetrically embedded and mounted at the bottom end of the rotating bar (1002), and a scraper (1004) is fixedly mounted at the bottom end of the connecting structure (1003).

8. The intelligent polymer powder material 3DP printer according to claim 7, characterized in that: The round roller of the rotating bar (1002) is located at one side of the mounting bar (1001) and is clamped with a gear (1005). The outer side of the gear (1005) is meshedly connected with a sawtooth bar (1006) that moves up and down. The top of the sawtooth bar (1006) is embedded with an electric lifting column (1007).

9. The intelligent polymer powder material 3DP printer according to claim 8, characterized in that: The top end of the electric lifting column (1007) is fixedly mounted on the top end of the powder dropping trough (91), and the bottom edge of the scraper (1004) is symmetrically chamfered.

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