Accurate feeding multi-material printer

Abstract

The invention discloses an accurate feeding multi-material printer, and relates to the technical field of printers, the accurate feeding multi-material printer comprises a bottom plate, the lower side of the bottom plate is fixedly connected with supporting legs, the upper side of the bottom plate is fixedly connected with a mounting frame, the lower side of the mounting frame is provided with a laser printing head, and the upper side of the bottom plate is provided with a feeding unit and a bearing unit; the bearing unit is located below the feeding unit and comprises a moving groove, and the moving groove is formed in the upper side of the bottom plate. According to the accurate feeding multi-material printer, the bearing box, the printing platform and the laser printing head are arranged, various powder raw materials can be conveniently printed, powder can be conveniently flattened through an electric sliding rail and a scraping plate, redundant raw materials are pushed into a collecting box, meanwhile, through an L-shaped plate, a cam, a reciprocating plate, an abutting rod and a first spring, the scraping plate can be conveniently moved to the collecting box, and the working efficiency is improved. And powder adhered to the surface of the scraping plate falls into a collecting box, so that the printing effect is prevented from being influenced.

Description

Technical Field

[0001] This invention relates to the field of printer technology, specifically to a precision feeding multi-material printer. Background Technology

[0002] Multi-material printers are additive manufacturing systems that can automatically and precisely distribute and combine multiple raw materials with different physical or chemical properties (such as hardness, elasticity, color, conductivity, and transparency) in a single printing job to create complex, multifunctional integrated objects.

[0003] A search revealed a Chinese patent with application number "CN202310390412.X", specifically concerning a multi-material 3D printer and its printing method. The printer includes a forming device, a powder-feeding device, and a control device. The forming device comprises a forming chamber, a laser scanning head, a powder supply assembly, and a forming cylinder and a forming platform located within the forming chamber. The powder-feeding device includes a powder-feeding box, a scraper, a powder-distribution assembly, a powder-suction assembly, and a translation assembly. The powder-feeding box is located above the top plane of the forming cylinder and can reciprocate controllably along the X-axis of the top plane of the forming cylinder. The translation assembly is mounted on the powder-feeding box and arranged along the Y-axis of the top plane of the forming cylinder, and includes a slidable mounting block. The powder-distribution assembly and the powder-suction assembly are mounted on the mounting block. The scraper is fixed to the bottom of the powder-feeding box corresponding to the powder-distribution assembly. The multi-material 3D printer utilizes the coordinated movement of the powder-feeding box and the translation assembly along the X and Y axes, respectively.

[0004] Existing multi-material printers pour powdered raw materials into the printing platform during feeding, and use a horizontally moving scraper to evenly distribute the powdered raw materials on the platform. A laser beam heats the single layer of powdered raw materials, and multiple layers are stacked to form a 3D model. However, after the scraper removes excess raw materials, powdered raw materials will stick to the scraper surface. If it is not cleaned in time, it is easy for other raw materials to mix together, which will affect the printing effect.

[0005] Therefore, this invention proposes a precision feeding multi-material printer to solve the problems mentioned above. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a precision feeding multi-material printer that solves the problem of raw material adhering to the surface after the scraper spreads the powder, thus affecting the printing effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A precision feeding multi-material printer includes a base plate, with support feet fixedly connected to the lower side of the base plate, and a mounting frame fixedly connected to the upper side of the base plate. A laser printhead is disposed on the lower side of the mounting frame. A feeding unit and a carrying unit are disposed on the upper side of the base plate, with the carrying unit located below the feeding unit. The carrying unit includes a moving groove located on the upper side of the base plate. A moving plate is slidably connected to the inner side of the moving groove. A carrying box is fixedly connected to the upper side of the moving plate. A printing platform is fixedly connected to the upper side of the carrying box. A cleaning component is disposed on the outer side of the carrying box. The cleaning component is used to clean excess material and remove any adhering material.

[0008] Preferably, the feeding unit includes a guide plate, which is fixedly connected to the upper side of the base plate. A guide block is slidably connected to the outer side of the guide plate. A movable frame is fixedly connected to the upper side of the guide block. A top rod is fixedly connected to the upper side of the movable frame. A top plate is fixedly connected to the upper end of the top rod. A central pipe is fixedly connected to the upper side of the top plate. Multiple conveying pipes are fixedly connected to the outer side of the central pipe. A feeding hopper is fixedly connected to the upper side of the conveying pipe. A flow valve is provided on the outer side of the conveying pipe. A sliding groove is opened on the upper side of the movable frame. A slider is slidably connected to the inner side of the sliding groove. A feeding head is fixedly connected to the lower side of the slider and communicates with the central pipe.

[0009] Preferably, a connecting plate is fixedly connected to the outer side of the guide block, an electric push rod one for driving the connecting plate to move is fixedly connected to the lower side of the base plate, and an electric push rod two for driving the slider one to move is fixedly connected to the inner side of the slide groove.

[0010] Preferably, a fixing block is fixedly connected to the upper side of the base plate, and an electric push rod is fixedly connected between the fixing block and the carrier box. Two collection holes are opened on the upper side of the carrier box, and a collection box is fixedly connected to the inner side of the collection holes. A ramp is fixedly connected to the inner side of the collection box, and side boxes are fixedly connected to both the left and right sides of the carrier box.

[0011] Preferably, an electric slide rail is fixedly connected to the front side of the carrier box, a second slider is provided on the outer side of the electric slide rail, a top frame is fixedly connected to the upper side of the second slider, a lifting groove is provided on the outer side of the top frame, a lifting block is slidably connected to the inner side of the lifting groove, a lifting plate is fixedly connected to the rear side of the lifting block, a moving rod is provided on the outer side of the lifting plate, a scraper is fixedly connected to the lower end of the moving rod, a reciprocating plate is fixedly connected to the upper end of the moving rod, and a spring is fixedly connected between the reciprocating plate and the lifting plate.

[0012] Preferably, a mounting block is fixedly connected to the front side of the top frame, a screw is rotatably connected to the upper side of the mounting block, a control block is fixedly connected to the front side of the lifting block, the screw is threadedly connected to the control block, and a motor is fixedly connected to the upper side of the top frame.

[0013] Preferably, an L-shaped plate is fixedly connected to the upper side of the lifting block, and two base blocks are fixedly connected to the lower side of the L-shaped plate. A connecting rod is rotatably connected between the two base blocks. A cam and a bevel gear are fixedly connected to the outer side of the connecting rod. A rotating rod is rotatably connected to the outer side of the L-shaped plate. A bevel gear is fixedly connected to the lower end of the rotating rod and meshes with the bevel gear. A rotating shaft and a rotating shaft are rotatably connected to the upper side of the L-shaped plate. A rotating block is fixedly connected to the upper end of the rotating rod. A rotating block is fixedly connected to the upper end of the rotating shaft. An inclined plate is rotatably connected to the upper side of the rotating block. The inclined plate is rotatably connected to the rotating block. The rotating shaft and the rotating rod are rotatably connected to the upper side of the rotating block. Pullers are fixedly connected to the outer sides of shaft two, and a belt is provided between the two pulleys. A gear is fixedly connected to the upper end of shaft two. Two stabilizing blocks are fixedly connected to the upper end of the L-shaped plate. A sliding rod is rotatably connected between the two stabilizing blocks. A reciprocating block is slidably connected to the outer side of the sliding rod. A toothed plate that meshes with the gear is fixedly connected to the upper side of the reciprocating block. Two stabilizing blocks are fixedly connected to the upper side of the toothed plate. A stop rod is fixedly connected to the outer side of the stabilizing blocks. A spring is fixedly connected between the reciprocating block and the stabilizing blocks. Baffles are fixedly connected to both sides of the bearing box. The reciprocating block is slidably connected to the L-shaped plate.

[0014] Preferably, a rotating rod two is rotatably connected to the inner side of the collection box, a plurality of stirring plates are fixedly connected to the outer side of the rotating rod two, a winding roller is fixedly connected to the outer end of the rotating rod two, an elastic rope is wound around the outer side of the winding roller, a rear block is fixedly connected to the rear side of the lifting plate, the elastic rope is fixedly connected to the rear block, and a guide wheel is provided on the inner side of the carrying box.

[0015] This invention provides a precision feeding multi-material printer. Compared with the prior art, it has the following advantages: (1) This precision feeding multi-material printer is equipped with a carrier box, printing platform and laser print head, which facilitates printing on a variety of powder materials. The electric slide rail and scraper facilitate the spreading of powder and pushes excess material into the collection box. At the same time, the L-shaped plate, cam, reciprocating plate, stop rod and spring facilitate the scraper to move to the collection box, so that the powder adhering to the scraper surface falls into the collection box and avoids affecting the printing effect.

[0016] (2) The precision feeding multi-material printer is equipped with a carrier box, a collection box, a rotating rod, a stirring plate, a side box, and an elastic rope. When the scraper moves left and right, the stirring plate rotates to stir the collected raw materials, so that the various collected raw materials are mixed together, which facilitates resource recycling. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the feeding unit in this invention; Figure 3 This is a three-dimensional structural view of the feeding unit in this invention from another perspective; Figure 4 This is a three-dimensional structural diagram of the bearing unit in this invention; Figure 5 This is a three-dimensional structural diagram of the scraper in this invention; Figure 6 This is a partial three-dimensional structural diagram of the scraper in this invention; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 for Figure 6 Enlarged view of point B in the middle; Figure 9 This is a three-dimensional cross-sectional view of the carrier box in this invention; Figure 10 This is a partial three-dimensional structural diagram of the carrier box in this invention.

[0018] In the diagram: 1. Base plate; 2. Support leg; 3. Mounting frame; 4. Laser print head; 5. Feeding unit; 6. Bearing unit; 51. Guide plate; 52. Guide block; 53. Connecting plate; 54. Moving frame; 55. Top rod; 56. Top plate; 57. Feed hopper; 58. Conveying pipe; 59. Flow valve; 510. Centralized pipe; 511. Electric push rod one; 512. Slide groove; 513. Slider one; 514. 515. Feed head; 61. Electric push rod II; 62. Moving trough; 63. Moving plate; 64. Carrier box; 65. Printing platform; 66. Electric push rod III; 67. Fixing block; 68. Collection hole; 69. Collection box; 610. Baffle; 611. Electric slide rail; 612. Slider II; 613. Top frame; 614. Lifting trough; 615. Lifting block; 616. Control block; 617. Screw; Mounting block; 618, Motor; 619, Lifting plate; 620, Moving rod; 621, Scraper; 622, Reciprocating plate; 623, Spring 1; 624, L-shaped plate; 625, Base block; 626, Connecting rod; 627, Cam; 628, Bevel gear 1; 629, Bevel gear 2; 630, Rotating rod 1; 631, Rotating shaft 1; 632, Rotating shaft 2; 633, Rotating block 1; 634, Rotating block 2; 635. Inclined plate; 636. Pulley; 637. Belt; 638. Gear; 639. Toothed plate; 640. Stabilizing block one; 641. Support rod; 642. Stabilizing block two; 643. Sliding rod; 644. Reciprocating block; 645. Spring two; 646. Rotating rod two; 647. Stirring plate; 648. Side box; 649. Rear block; 650. Take-up roller; 651. Elastic rope; 652. Guide wheel. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides the following technical solutions: Example 1 Please see Figure 1 - Figure 8A precision feeding multi-material printer includes a base plate 1, a support foot 2 fixedly connected to the lower side of the base plate 1, a mounting frame 3 fixedly connected to the upper side of the base plate 1, a laser print head 4 disposed on the lower side of the mounting frame 3, a feeding unit 5 and a carrying unit 6 disposed on the upper side of the base plate 1, the carrying unit 6 being located below the feeding unit 5, the carrying unit 6 including a moving groove 61, the moving groove 61 being opened on the upper side of the base plate 1, a moving plate 62 slidably connected to the inner side of the moving groove 61, a carrying box 63 fixedly connected to the upper side of the moving plate 62, a printing platform 64 fixedly connected to the upper side of the carrying box 63, and a cleaning component disposed on the outer side of the carrying box 63, the cleaning component being used to clean excess material and clean any adhering material.

[0021] The feeding unit 5 includes a guide plate 51, which is fixedly connected to the upper side of the base plate 1. A guide block 52 is slidably connected to the outer side of the guide plate 51. A movable frame 54 is fixedly connected to the upper side of the guide block 52. A top rod 55 is fixedly connected to the upper side of the movable frame 54. A top plate 56 is fixedly connected to the upper end of the top rod 55. A central pipe 510 is fixedly connected to the upper side of the top plate 56. Multiple conveying pipes 58 are fixedly connected to the outer side of the central pipe 510. The upper side of the conveying pipes 58 is fixedly connected to... A feed hopper 57 is connected to the feed pipe 58, and a flow valve 59 is installed on the outside of the feed pipe 58. A slide groove 512 is opened on the upper side of the moving frame 54. A slider 513 is slidably connected to the inner side of the slide groove 512. A feed head 514 is fixedly connected to the lower side of the slider 513 and communicates with the central pipe 510. A connecting plate 53 is fixedly connected to the outer side of the guide block 52. An electric push rod 511 for driving the connecting plate 53 is fixedly connected to the lower side of the base plate 1. An electric push rod 515, which drives the slider 513 to move, is fixedly connected to the inner side of the groove 512. When printing powder materials, multiple powder materials are first placed through multiple feeding hoppers 57, and the powder materials are controlled to be input into the central pipe 510 through the flow valve 59. The powder materials are then transported to the printing platform 64 below through the feeding head 514. At the same time, the electric push rod 511 drives the connecting plate 53 to move, the connecting plate 53 drives the guide block 52 to move, the guide block 52 drives the moving frame 54 to move, and the moving frame 54 drives the feeding head 514 to move. At the same time, the electric push rod 515 drives the feeding head 514 to move left and right to facilitate the uniform placement of powder materials. Then, the electric push rod 65 drives the carrier box 63 to move forward, so that the printing platform 64 on the carrier box 63 can move above the laser printing head 4 to complete the printing of one layer. The above process is repeated to complete the printing of the 3D model.

[0022] A fixing block 66 is fixedly connected to the upper side of the base plate 1. An electric push rod 65 is fixedly connected between the fixing block 66 and the carrier box 63. Two collection holes 67 are opened on the upper side of the carrier box 63. A collection box 68 is fixedly connected to the inner side of the collection hole 67. A ramp is fixedly connected to the inner side of the collection box 68. Side boxes 648 are fixedly connected to both the left and right sides of the carrier box 63. By setting up the collection boxes 68 and side boxes 648 on both sides, it is convenient to collect excess powder raw materials.

[0023] An electric slide rail 610 is fixedly connected to the front of the carrying box 63. A slider 611 is provided on the outer side of the electric slide rail 610. A top frame 612 is fixedly connected to the upper side of the slider 611. A lifting groove 613 is provided on the outer side of the top frame 612. A lifting block 614 is slidably connected to the inner side of the lifting groove 613. A lifting plate 619 is fixedly connected to the rear side of the lifting block 614. A moving rod 620 is provided on the outer side of the lifting plate 619. A scraper 621 is fixedly connected to the lower end of the moving rod 620. A reciprocating plate 622 is fixedly connected to the upper end of the moving rod 620. A spring 623 is fixedly connected between the reciprocating plate 622 and the lifting plate 619. A mounting block 617 is fixedly connected to the front of the top frame 612. A screw 616 is rotatably connected to the upper side of the mounting block 617. A control block 615 is fixedly connected to the front of the lifting block 614. 6 is threadedly connected to the control block 615. The upper side of the top frame 612 is fixedly connected to the motor 618. When the powder material is poured into the printing platform 64, the electric slide rail 610 is controlled to make the slider 611 drive the top frame 612 to move left and right. The top frame 612 drives the scraper 621 to move left and right, so that the scraper 621 can spread the powder material and scrape off the excess powder. When the scraper 621 moves to the right, the second layer of powder needs to be spread. The motor 618 starts and drives the screw 616 to rotate. The screw 616 drives the control block 615 to rise. The control block 615 drives the lifting block 614 to rise. The lifting block 614 drives the lifting plate 619 to rise. The lifting plate 619 drives the scraper 621 to rise, so that the scraper 621 can move to the left to spread another layer of powder. This facilitates the spreading of multiple layers of powder.

[0024] An L-shaped plate 624 is fixedly connected to the upper side of the lifting block 614. Two base blocks 625 are fixedly connected to the lower side of the L-shaped plate 624. A connecting rod 626 is rotatably connected between the two base blocks 625. A cam 627 and a bevel gear 628 are fixedly connected to the outer side of the connecting rod 626. A rotating rod 630 is rotatably connected to the outer side of the L-shaped plate 624. A bevel gear 629 that meshes with the bevel gear 628 is fixedly connected to the lower end of the rotating rod 630. A rotating shaft 631 and a rotating shaft 632 are rotatably connected to the upper side of the L-shaped plate 624. A rotating block 633 is fixedly connected to the upper end of the rotating rod 630. A rotating block 634 is fixedly connected to the upper end of the rotating shaft 631. An inclined plate 635 is rotatably connected to the upper side of the rotating block 634. 635 is rotatably connected to rotating block 633. Pulleys 636 are fixedly connected to the outer sides of rotating shaft 631 and rotating shaft 632. A belt 637 is provided between the two pulleys 636. A gear 638 is fixedly connected to the upper end of rotating shaft 632. Two stabilizing blocks 642 are fixedly connected to the upper end of L-shaped plate 624. A sliding rod 643 is rotatably connected between the two stabilizing blocks 642. A reciprocating block 644 is slidably connected to the outer side of the sliding rod 643. A toothed plate 639 that meshes with the gear 638 is fixedly connected to the upper side of the reciprocating block 644. Two stabilizing blocks 640 are fixedly connected to the upper side of the toothed plate 639. A stop rod 641 is fixedly connected to the outer side of the stabilizing blocks 640. The reciprocating block 644 and the stabilizing block 642 are connected... A spring 645 is fixedly connected to the bearing box 63. Baffles 69 are fixedly connected to both sides of the bearing box 63. The reciprocating block 644 is slidably connected to the L-shaped plate 624. During flattening, powdery raw materials easily adhere to the surface of the scraper 621. When the scraper 621 moves near the collection box 68, the lifting plate 619 drives the push rod 641 to contact the baffle 69. The lifting plate 619 continues to move, the push rod 641 drives the stabilizing block 640 to move, the stabilizing block 640 drives the toothed plate 639 to move, the toothed plate 639 drives the gear component 638 to rotate, and the gear component 638 drives the pulley 636 on the rotating shaft 632 to rotate. Under the action of the belt 637, the rotating shaft 632 drives the rotating shaft 631 to rotate, and the rotating shaft 631 drives the reciprocating block 634 to rotate. 4. Rotating block 2 634 drives the inclined plate 635 to rotate, the inclined plate 635 drives the rotating block 1 633 to rotate repeatedly in both directions, the rotating block 1 633 drives the rotating rod 1 630 to rotate, the rotating rod 1 630 drives the bevel gear 2 629 to rotate, the bevel gear 2 629 drives the bevel gear 1 628 to rotate, the bevel gear 1 628 drives the connecting rod 626 to rotate repeatedly in both directions, the connecting rod 626 drives the cam 627 to swing repeatedly, the cam 627 drives the reciprocating plate 622 to move up and down repeatedly, the reciprocating plate 622 drives the scraper 621 on the moving rod 620 to move up and down repeatedly, so that the scraper 621 hits the lifting plate 619. Under the action of vibration, the powder on the surface of the scraper 621 falls into the inner side of the collection box 68 at the bottom to avoid affecting the printing effect.

[0025] Example 2 Based on Example 1, such as Figure 9 , Figure 10 As shown, a rotating rod 646 is rotatably connected to the inner side of the collection box 68, and multiple stirring plates 647 are fixedly connected to the outer side of the rotating rod 646. A take-up roller 650 is fixedly connected to the outer end of the rotating rod 646, and an elastic rope 651 is wound around the outer side of the take-up roller 650. A rear block 649 is fixedly connected to the rear side of the lifting plate 619, and the elastic rope 651 is fixedly connected to the rear block 649. A guide wheel 652 is provided on the inner side of the bearing box 63. When the scraper 621 moves, the lifting plate 619 drives the rear block 649 to move. Under the action of the elastic rope 651, the take-up roller 650 rotates, and the take-up roller 650 drives the stirring plates 647 on the rotating rod 646 to rotate, so that the stirring plates 647 can stir the powder and mix the various raw materials together.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] During operation, firstly, the flow valve 59 is opened to allow the powder material to be discharged from the feed head 514. Then, the electric push rods 511 and 515 are controlled to ensure the powder material is evenly spread on the printing platform 64. Next, the electric push rod 65 is controlled to move the printing platform 64 forward, and printing is performed through the laser print head 4. Then, the electric slide rail 610 is controlled to move the scraper 621 to the left to even out the powder. Finally, the motor 618 is started to rotate the screw 616. The control block 615, lifting block 614, and lifting plate 61... Under the action of 9, the scraper 621 is controlled to rise. When the scraper 621 moves to the vicinity of the collection box 68, the lifting plate 619 drives the abutment rod 641 to move. Under the action of the baffle 69, the toothed plate 639 is controlled to move. Under the action of the gear 638, rotating shaft 1 631, rotating shaft 2 632, rotating block 1 633, rotating block 2 634, inclined plate 635, and rotating rod 1 630, the cam 627 on the connecting rod 626 is controlled to rotate, and the scraper 621 is controlled to move up and down repeatedly, so that the powder adhering to the surface of the scraper 621 is cleaned.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision feeding multi-material printer, comprising a base plate (1), characterized in that: The bottom plate (1) is fixedly connected to a support foot (2), and the bottom plate (1) is fixedly connected to a mounting bracket (3). A laser print head (4) is provided on the bottom side of the mounting bracket (3). A feeding unit (5) and a carrying unit (6) are provided on the top side of the bottom plate (1). The carrying unit (6) is located below the feeding unit (5). The carrying unit (6) includes a moving groove (61). The moving groove (61) is opened on the top side of the bottom plate (1). A moving plate (62) is slidably connected to the inner side of the moving groove (61). A carrying box (63) is fixedly connected to the top side of the moving plate (62). A printing platform (64) is fixedly connected to the top side of the carrying box (63). A cleaning component is provided on the outer side of the carrying box (63). The cleaning component is used to clean excess raw materials and clean the adhering raw materials.

2. The precision feeding multi-material printer according to claim 1, characterized in that: The feeding unit (5) includes a guide plate (51), which is fixedly connected to the upper side of the base plate (1). A guide block (52) is slidably connected to the outer side of the guide plate (51). A movable frame (54) is fixedly connected to the upper side of the guide block (52). A top rod (55) is fixedly connected to the upper side of the movable frame (54). A top plate (56) is fixedly connected to the upper end of the top rod (55). A central pipe (510) is fixedly connected to the upper side of the top plate (56). Multiple conveying pipes (58) are fixedly connected to the outside of the 10), a feeding hopper (57) is fixedly connected to the upper side of the conveying pipe (58), a flow valve (59) is provided on the outside of the conveying pipe (58), a sliding groove (512) is opened on the upper side of the moving frame (54), a slider (513) is slidably connected to the inner side of the sliding groove (512), a feeding head (514) is fixedly connected to the lower side of the slider (513), and the feeding head (514) is connected to the central pipe (510).

3. A precision feeding multi-material printer according to claim 2, characterized in that: A connecting plate (53) is fixedly connected to the outer side of the guide block (52), an electric push rod (511) for driving the connecting plate (53) to move is fixedly connected to the lower side of the base plate (1), and an electric push rod (515) for driving the slider (513) to move is fixedly connected to the inner side of the slide groove (512).

4. A precision feeding multi-material printer according to claim 1, characterized in that: A fixing block (66) is fixedly connected to the upper side of the base plate (1). An electric push rod (65) is fixedly connected between the fixing block (66) and the carrier box (63). Two collection holes (67) are opened on the upper side of the carrier box (63). A collection box (68) is fixedly connected to the inner side of the collection hole (67). A ramp is fixedly connected to the inner side of the collection box (68). Side boxes (648) are fixedly connected to both the left and right sides of the carrier box (63).

5. A precision feeding multi-material printer according to claim 4, characterized in that: An electric slide rail (610) is fixedly connected to the front side of the bearing box (63). A second slider (611) is provided on the outer side of the electric slide rail (610). A top frame (612) is fixedly connected to the upper side of the second slider (611). A lifting groove (613) is provided on the outer side of the top frame (612). A lifting block (614) is slidably connected to the inner side of the lifting groove (613). A lifting plate (619) is fixedly connected to the rear side of the lifting block (614). A moving rod (620) is provided on the outer side of the lifting plate (619). A scraper (621) is fixedly connected to the lower end of the moving rod (620). A reciprocating plate (622) is fixedly connected to the upper end of the moving rod (620). A spring (623) is fixedly connected between the reciprocating plate (622) and the lifting plate (619).

6. A precision feeding multi-material printer according to claim 5, characterized in that: A mounting block (617) is fixedly connected to the front side of the top frame (612), and a screw (616) is rotatably connected to the upper side of the mounting block (617). A control block (615) is fixedly connected to the front side of the lifting block (614), and the screw (616) is threadedly connected to the control block (615). A motor (618) is fixedly connected to the upper side of the top frame (612).

7. A precision feeding multi-material printer according to claim 6, characterized in that: An L-shaped plate (624) is fixedly connected to the upper side of the lifting block (614). Two bottom blocks (625) are fixedly connected to the lower side of the L-shaped plate (624). A connecting rod (626) is rotatably connected between the two bottom blocks (625). A cam (627) and a bevel gear (628) are fixedly connected to the outer side of the connecting rod (626). A rotating rod (630) is rotatably connected to the outer side of the L-shaped plate (624). The lower end of the rotating rod (630) is fixedly connected to a bevel gear (628). 28) A bevel gear two (629) meshing with each other, the upper side of the L-shaped plate (624) is rotatably connected to a rotating shaft one (631) and a rotating shaft two (632), the upper end of the rotating rod one (630) is fixedly connected to a rotating block one (633), the upper end of the rotating shaft one (631) is fixedly connected to a rotating block two (634), the upper side of the rotating block two (634) is rotatably connected to an inclined plate (635), the inclined plate (635) is rotatably connected to the rotating block one (633), the rotating shaft one (631) and the rotating shaft two (632) are rotatably connected to each other. Pullers (636) are fixedly connected to the outer sides of the two shafts (632), and a belt (637) is provided between the two pulleys (636). A gear (638) is fixedly connected to the upper end of the shaft (632). Two stabilizing blocks (642) are fixedly connected to the upper end of the L-shaped plate (624). A sliding rod (643) is rotatably connected between the two stabilizing blocks (642). A reciprocating block (644) is slidably connected to the outer side of the sliding rod (643). The upper part of the reciprocating block (644) is... A toothed plate (639) is fixedly connected to the side and meshes with the gear component (638). Two stabilizing blocks (640) are fixedly connected to the upper side of the toothed plate (639). A stop rod (641) is fixedly connected to the outer side of the stabilizing block (640). A spring (645) is fixedly connected between the reciprocating block (644) and the stabilizing block (642). Baffles (69) are fixedly connected to both the left and right sides of the bearing box (63). The reciprocating block (644) is slidably connected to the L-shaped plate (624).

8. A precision feeding multi-material printer according to claim 7, characterized in that: The inner side of the collection box (68) is rotatably connected to a rotating rod (646), and a plurality of stirring plates (647) are fixedly connected to the outer side of the rotating rod (646). The outer end of the rotating rod (646) is fixedly connected to a winding roller (650), and an elastic rope (651) is wound around the outer side of the winding roller (650). The rear side of the lifting plate (619) is fixedly connected to a rear block (649), and the elastic rope (651) is fixedly connected to the rear block (649). The inner side of the carrying box (63) is provided with a guide wheel (652).

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