A high-throughput molding apparatus and molding method suitable for adhesive spraying

By designing multiple powder delivery bins and multiple forming platforms, and employing bidirectional, efficient, and uniform powder delivery and spreading technology, the problem of low printing efficiency for multiple materials in existing 3DP equipment has been solved, achieving high-throughput forming of multiple materials and improving printing efficiency and part quality.

CN115648620BActive Publication Date: 2026-03-06XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-07
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing 3DP printing equipment can only print a single material or a single workpiece at the same time. The printing efficiency of multiple materials is low, the powder material distribution is uneven, and the problem of uneven powder spreading is serious, which limits the molding efficiency and application fields.

Method used

The design incorporates multiple powder feeding bins and multiple forming platforms, combined with bidirectional, efficient, and uniform powder feeding and spreading technology. Multiple materials are sprayed simultaneously through nozzles on the nozzle plate, and powder is spread bidirectionally using rollers at the bottom of the powder feeding bins, avoiding material mixing and waste. Excess powder is recovered using a powder recovery box.

Benefits of technology

It enables simultaneous printing of multiple materials, improves 3DP printing efficiency, enhances the flatness of the powder-spreading surface and the surface quality of printed parts, reduces limitations on the speed and movement speed of the powder-spreading roller, eliminates idle travel time, and improves printing efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This invention provides a high-throughput molding apparatus and method suitable for adhesive spraying, including a molding table, a powder feeding bin, rollers, a nozzle plate, and a molding table moving device. The molding table includes several molding small platforms arranged in an array. The powder feeding bin includes several powder feeding chambers, each corresponding to a molding small platform, with a powder outlet at the bottom of each chamber. The molding table moving device moves the powder feeding chambers along the powder spreading direction, allowing the powder in the chambers to fall onto the corresponding molding small platforms through the powder outlets. Rollers are used to spread the powder on the molding small platforms. The nozzle plate has several nozzles for spraying adhesive onto the molding small platforms. This apparatus can print multiple different materials simultaneously, solving the problem that current multi-material powder spreading 3DP equipment can only print a single material or a single workpiece simultaneously, thus achieving the functional requirement of high-throughput molding.
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Description

Technical Field

[0001] This invention relates to the field of non-metallic adhesive spraying additive manufacturing, and more particularly to a high-throughput molding apparatus and molding method suitable for adhesive spraying. Background Technology

[0002] 3DP is an additive manufacturing (3D printing) process based on discrete stacking and microdroplet jetting technology. It first lays out a thin layer of powder, and then uses inkjet printing technology to spray liquid binder onto the powder layer as needed to form the contour of a certain cross section. By repeating the powder-laying and printing operation for all cross sections, the powder is stacked to form a three-dimensional solid part.

[0003] Most bond jet 3D printers on the market today can only lay up and print with a single powder material, meaning that a single machine can only be used with one specific powder material. This production method falls far short of expectations. While some other 3D printers designed for multiple materials can only print one type of part at a time, their forming efficiency is low, and the uneven distribution of multiple powder materials is quite noticeable. Summary of the Invention

[0004] The purpose of this invention is to provide a high-throughput molding device and molding method suitable for adhesive spraying. This device can print multiple different materials simultaneously, solving the problem that current multi-material powder-laying 3DP equipment can only print a single material or a single workpiece at the same time, thus realizing the functional requirement of high-throughput molding.

[0005] This invention is achieved through the following technical solution:

[0006] A high-throughput molding apparatus suitable for adhesive spraying includes a molding table, a powder feeding hopper, rollers, a nozzle plate, and a molding table moving device.

[0007] The forming table includes several small forming platforms arranged in a row; the powder feeding hopper includes several small powder feeding hoppers, each corresponding to a small forming platform, and each small powder feeding hopper has a powder outlet at its bottom; the forming table moving device can move the small powder feeding hoppers along the powder spreading direction so that the powder in the small powder feeding hoppers falls onto the corresponding small forming platform through the powder outlet; the roller is used to spread the powder that has fallen onto the small forming platform; the nozzle plate is equipped with several nozzles for spraying adhesive onto the small forming platform.

[0008] Preferably, the bottom of the powder feeding chamber is provided with two rods, the powder outlet is located between the two rods, and the powder outlet is parallel to the axial direction of the rods in the length direction.

[0009] Preferably, the forming table moving device can drive the powder feeding bin to move in a direction perpendicular to the powder spreading direction, so that the powder feeding bin corresponds to different forming platforms.

[0010] Preferably, it also includes a powder recovery box, and the molding table is set in the powder recovery box.

[0011] Preferably, it also includes a guide rod lifting mechanism, with the bottom of the forming table connected to the guide rod lifting mechanism, which is used to lift the forming table.

[0012] Preferably, it also includes a horizontally arranged guide rail, which is located on one side of the forming table. One end of the nozzle plate is slidably connected to the guide rail through a nozzle pad, and the nozzle plate can move along the guide rail above the forming table.

[0013] Preferably, the small forming platforms are separated by partitions.

[0014] A high-throughput molding method suitable for adhesive spraying, based on the aforementioned high-throughput molding apparatus, includes:

[0015] Step 1: The forming table moving device drives the powder feeding bin to move above the forming table to spread powder, so that the powder in each powder feeding bin falls onto the corresponding forming platform. At the same time, rollers are used to spread the powder evenly, completing the powder spreading process.

[0016] Step 2: The nozzle plate moves above the molding platform and sprays adhesive onto each molding platform through the nozzle.

[0017] Step 3: Move the forming platform down one layer and repeat steps 1-2 until printing is complete.

[0018] A high-throughput molding method suitable for adhesive spraying, based on the aforementioned high-throughput molding apparatus, includes:

[0019] Step 1: The forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the first powder spreading direction, so that the powder in the powder feeding bin falls onto the corresponding forming platform. At the same time, the roller located behind in the first powder spreading direction is used to spread the powder evenly.

[0020] Step 2: The forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the second powder spreading direction, so that the powder in the powder feeding bin falls onto the corresponding forming platform. At the same time, the powder is spread evenly by the roller located behind in the second powder spreading direction. The second powder spreading direction is opposite to the first powder spreading direction.

[0021] Step 3: The nozzle plate moves above the molding platform and sprays adhesive onto each molding platform through the nozzle.

[0022] Step 4: Move the forming platform down one layer and repeat steps 1-3 until printing is complete.

[0023] A high-throughput molding method suitable for adhesive spraying, based on the high-throughput molding device, wherein the molding platform includes a first molding platform and a second molding platform, and the powder feeding bin includes a first powder feeding bin and a second powder feeding bin;

[0024] include:

[0025] Step 1: The forming table moving device moves the powder feeding bin so that the first powder feeding bin is located above the first forming small platform and the second powder feeding bin is located above the second forming small platform; the forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the first powder spreading direction, so that the powder in the powder feeding bin falls onto the corresponding forming small platform, and at the same time, the roller located behind in the first powder spreading direction is used to spread the powder evenly.

[0026] Step 2: The forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the second powder spreading direction, so that the powder in the powder feeding bin falls onto the corresponding forming platform. At the same time, the powder is spread evenly by the roller located behind in the second powder spreading direction. The second powder spreading direction is opposite to the first powder spreading direction.

[0027] Step 3: The nozzle plate moves above the molding platform and sprays adhesive onto each molding platform through the nozzle.

[0028] Step 4: The forming platform moves down one layer;

[0029] Step 5: The forming table moving device moves the powder feeding bin so that the second powder feeding bin is located above the first forming platform; the forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the first powder spreading direction, so that the powder in the second powder feeding bin falls onto the first forming platform, and at the same time, the roller located behind in the first powder spreading direction is used to spread the powder evenly.

[0030] Step 6: The forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the second powder spreading direction, so that the powder in the second powder feeding bin falls onto the first forming platform. At the same time, the powder is spread evenly by the roller located behind in the second powder spreading direction. The second powder spreading direction is opposite to the first powder spreading direction.

[0031] Step 7: The forming table moving device moves the powder feeding bin so that the first powder feeding bin is located above the second forming platform; the forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the first powder spreading direction, so that the powder in the first powder feeding bin falls onto the second forming platform, and at the same time, the roller located behind in the first powder spreading direction is used to spread the powder evenly.

[0032] Step 8: The forming table moving device drives the powder feeding bin to move and spread powder above the forming table along the second powder spreading direction, so that the powder in the first powder feeding bin falls onto the second forming platform. At the same time, the powder is spread evenly by the roller located behind in the second powder spreading direction. The second powder spreading direction is opposite to the first powder spreading direction.

[0033] Step 9: The nozzle plate moves above the molding platform and sprays adhesive onto each molding platform through the nozzle.

[0034] Step 10: Move the forming platform down one layer and repeat steps 1-9 until printing is complete.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The device of this invention is equipped with multiple powder feeding chambers and forming platforms. By integrating multiple powder feeding chambers and multiple forming platforms, it can simultaneously form parts made of multiple different materials, which greatly improves the efficiency of adhesive forming parts and will greatly improve the forming efficiency of 3DP printing process. This device does not simply favor multiple materials, but can print multiple different materials at the same time, which greatly improves efficiency and solves the problem that current multi-material powder-laying 3DP equipment can only print a single material at the same time, thus realizing the functional requirement of high-throughput forming.

[0037] Furthermore, the 3DP process demands high flatness and uniformity of the powder layer. Top-feed 3DP equipment, in particular, exhibits poor powder flatness and imposes strict requirements on powder spreading parameters during the printing process, limiting the application areas and forming efficiency of 3DP printing. Moreover, existing powder spreading devices, whether top-feed or bottom-feed, all suffer from some degree of roller idle stroke, resulting in long working strokes when performing ordinary bidirectional powder spreading across multiple forming areas. This invention addresses this issue by incorporating two rollers at the bottom of the powder feeding chamber. Through bidirectional, efficient, and uniform powder spreading, it effectively improves the flatness of the powder-spreading surface, enhancing the surface quality of the printed parts. Especially in multi-channel, multi-material printing, it reduces the working stroke and completely eliminates idle stroke time, significantly improving printing efficiency.

[0038] Furthermore, the powder recycling bin can recover excess powder, avoiding material waste.

[0039] Furthermore, the effective separation of each powder delivery compartment avoids contamination from the mixing of different materials.

[0040] The method of this invention allows different materials to be filled into the powder feeding chamber, thereby enabling the simultaneous printing of multiple different materials and improving the forming efficiency of the 3DP printing process.

[0041] The proposed improvement involves moving the powder feeding chamber to spread powders of different materials on the same forming platform, enabling simultaneous printing of multiple multi-material workpieces and fulfilling the high-throughput printing requirement. This solves the problems of current multi-material 3DP printing equipment, which can only print one type of multi-material part at a time, have low forming efficiency, and suffer from uneven distribution of various powder materials.

[0042] The further proposed improvement, the bidirectional high-efficiency powder feeding and spreading method of the present invention, solves the problem of uneven powder spreading in the top-feeding powder equipment, improves the flatness of powder spreading, enhances the surface quality of printed parts, and reduces the requirements for the rotation speed and moving speed of the powder spreading roller. It not only achieves the goal of reducing the working stroke of powder spreading, but also completely eliminates the empty return stroke during powder spreading, greatly improving printing efficiency. Attached Figure Description

[0043] Figure 1 This is a structural diagram of the present invention;

[0044] Figure 2 This is a side view of the roller device of the present invention;

[0045] Figure 3 This is a process flow diagram of the present invention.

[0046] In the diagram, 1. Forming platform, 1-1. First forming small platform, 1-2. Second forming small platform, 2. Powder feeding bin, 2-1. First powder feeding bin, 2-2. Second powder feeding bin, 3. Smooth rod lifting mechanism, 4-1. First rear roller, 4-2. First front roller, 5-1. Second rear roller, 5-2. Second front roller, 6. Nozzle plate, 7. Nozzle pad, 8. Guide rail, 9. Powder recovery box, 10. Powder outlet slit. Detailed Implementation

[0047] To further understand the present invention, the present invention will be described below with reference to embodiments. These descriptions are only for further explaining the features and advantages of the present invention and are not intended to limit the claims of the present invention.

[0048] This invention relates to a high-throughput molding device for adhesive spraying, comprising a molding table 1, a powder feeding hopper 2, a guide rod lifting mechanism 3, rollers, a nozzle plate 6, a nozzle pad 7, a guide rail 8, a powder recovery box 9, and a molding table moving device. In this invention, the powder spreading direction is defined as the width direction of the entire mechanism, and the direction perpendicular to the width direction in the molding table is defined as the length direction. All subsequent descriptions of the length and width directions will adhere to this standard and will not be repeated.

[0049] See Figure 1The entire device is mounted on a machine tool. The powder recovery box 9 is mounted on the machine tool, and the forming table 1 is located in the powder recovery box 9. The bottom of the forming table 1 is connected to the guide rod lifting mechanism 3, which is used to lift the forming table 1. The lower end of the guide rod lifting mechanism 3 is connected to the machine tool and its movement in the vertical direction is controlled by a servo motor.

[0050] The forming platform 1 includes several small forming platforms arranged in a row. The powder feeding bin 2 includes several powder feeding bins, each corresponding to a small forming platform. The forming platform moving device is a combination of a stepper motor and a synchronous belt. The forming platform relies on the stepper motor connected to the synchronous belt to move the powder feeding bins above the small forming platforms along the width direction of the platforms, and also along the length direction of the platforms. Each powder feeding bin has a built-in stirrer and a powder outlet at its bottom. The length of the powder outlet is parallel to the length of the small forming platform, and the length of the outlet is equal to the length of the platform. In one embodiment, the powder feeding bin 2 is internally divided into multiple individual powder feeding bins using partitions. Each individual powder feeding bin can hold different ceramic powders. In another embodiment, the forming platform 1 is internally divided into multiple small forming platforms using partitions.

[0051] The bottom of the powder dispensing compartment has two rods, and the powder outlet is located between the two rods, with the powder outlet parallel to the axis of the rods in the length direction.

[0052] The guide rail 8 is located on one side of the powder recovery box 9, and the printhead plate 6 is slidably connected to the guide rail 8 via the printhead pad 7. The printhead plate 6 can move above the forming table 1 along the width of the forming platform. The printhead plate 6 has an array of printhead fixing ports, which can support several printheads, enabling full-width on-demand spraying of the entire forming table 1.

[0053] Example 1

[0054] See Figure 1The powder recovery box 9 is equipped with a first forming platform 1-1 and a second forming platform 1-2. The first forming platform 1-1 and the second forming platform 1-2 together constitute the forming platform 1. The powder feeding bin 2 is located directly above the forming platform 1. The powder feeding bin 2 is also divided into a first powder feeding bin 2-1 and a second powder feeding bin 2-2. The first powder feeding bin 2-1 is directly above the first forming platform 1-1, and the second powder feeding bin 2-2 is directly above the second forming platform 1-2. The first powder feeding bin 2-1 and the second powder feeding bin 2-2 have built-in agitators and powder outlets at their lower ends. The length of the powder outlets is equal to the length of the first forming platform 1-1 and the second forming platform 1-2, respectively, so that the powder can be evenly spread throughout the forming platform. Rollers are installed at the front and rear of the powder outlet openings at the lower ends of the first powder feeding chamber 2-1 and the second powder feeding chamber 2-2, respectively, namely the first rear roller 4-1 and the first front roller 4-2, the second rear roller 5-1 and the second front roller 5-2, as follows. Figure 3 Along the direction from back to front in the figure, the two sides of the forming platform 1 are the first side and the second side, respectively. The lower part of the first forming platform 1-1 and the second forming platform 1-2 are connected to the light rod lifting mechanism 3.

[0055] The rollers are connected to the corresponding powder feeding bins and are located on both sides of the lower end of the powder outlet. The rollers move with the powder feeding bins. When the powder feeding bins move along the width of the forming platform to spread powder, the rollers on the rear side of the powder feeding bins rotate at a set speed to flatten the powder falling on the forming platform and push excess powder into the powder recycling box 9.

[0056] The nozzles are mounted on the nozzle plate 6, which is mounted on the nozzle pad 7. The nozzle pad 7 is slidably connected to the guide rail 8, which is located on one side of the forming table 1 and connected to the machine tool. The nozzle plate 6 has a plate-like structure, with the lower nozzles facing directly above the first forming platform 1-1 and the second forming platform 1-2. Several nozzles can be mounted on the nozzle plate 6.

[0057] Except for the vertical rod lifting mechanism, all the above movements are achieved by stepper motors connected to synchronous belt devices.

[0058] See Figure 3 The usage process of the above device is as follows:

[0059] Step 1: Along the width direction of the forming platform 1, the powder feeding bin 2 moves parallel to the ground and the first rear roller 4-1 and the second rear roller 5-1 start rotating. Under the action of the built-in agitator, the powder falls from the powder outlet at the lower end of the first powder feeding bin 2-1 and the second powder feeding bin 2-2, respectively, onto the first forming platform 1-1 and the second forming platform 1-2. In this step, the first rear roller 4-1 and the second rear roller 5-1 flatten the powder that has fallen onto the first forming platform 1-1 and the second forming platform 1-2 and push the excess powder into the powder recycling box 9.

[0060] Step 2: After the powder feeding bin 2 moves to the second side of the forming platform 1, it stays for a set time. The first rear roller 4-1 and the second rear roller 5-1 stop rotating, while the first front roller 4-2 and the second front roller 5-2 start rotating. Under the action of the built-in agitator, the powder falls from the powder outlet at the lower end of the first powder feeding bin 2-1 and the second powder feeding bin 2-2. The powder feeding bin 2 moves back to the first side of the forming platform, and the first front roller 4-2 and the second front roller 5-2 stop rotating. In this step, the first front roller 4-2 and the second front roller 5-2 flatten the powder that has fallen on the first forming platform 1-1 and the second forming platform 1-2 and push the excess powder into the powder recycling box 9. This completes the bidirectional, efficient, and uniform powder feeding and spreading.

[0061] Step 3: The printhead moves forward from the second side of the forming table 1 to the first side along the guide rail 8 with the printhead pad 7 to complete the printing of one layer;

[0062] Step 4: The nozzle returns to the second side of the forming table 1 along the guide rail 8 along the nozzle pad 7.

[0063] Step 5: The forming stage 1 moves down one layer, and steps 1-4 are repeated until printing is complete.

[0064] A further improvement of the present invention is that the powder feeding chamber 2 can move along the length of the forming table 1 to achieve multi-material printing of multiple parts. The usage process is as follows:

[0065] Step 1: Along the width of the forming platform 1, the powder feeding bin 2 moves parallel to the ground and the first rear roller 4-1 and the second rear roller 5-1 start to rotate. Under the action of the built-in agitator, the powder falls from the lower powder outlet of the first powder feeding bin 2-1 and the second powder feeding bin 2-2, respectively, onto the first forming platform 1-1 and the second forming platform 1-2. In this step, the first rear roller 4-1 and the second rear roller 5-1 flatten the powder that has fallen onto the first forming platform 1-1 and the second forming platform 1-2 and push the excess powder into the powder recycling box 9.

[0066] Step 2: After the powder feeding bin 2 moves to the second side of the forming platform 1, the first rear roller 4-1 and the second rear roller 5-1 stop rotating, while the first front roller 4-2 and the second front roller 5-2 begin rotating. Under the action of the built-in agitator, the powder falls from the powder outlet at the lower end of the first powder feeding bin 2-1 and the second powder feeding bin 2-2. The powder feeding bin 2 moves back to the first side of the forming platform 1, and the first front roller 4-2 and the second front roller 5-2 stop rotating. In this step, the first front roller 4-2 and the second front roller 5-2 flatten the powder that has fallen on the first forming platform 1-1 and the second forming platform 1-2 and push the excess powder into the powder recycling box 9. This completes the bidirectional, efficient, and uniform powder feeding and spreading of the first layer of powder.

[0067] Step 3: The printhead moves forward from the second side of the forming table 1 to the first side along the guide rail 8 with the printhead pad 7 to complete the first layer printing of the first forming platform 1-1 and the second forming platform 1-2.

[0068] Step 4: The nozzle returns to the second side of the forming table 1 along the guide rail 8 along the nozzle pad 7.

[0069] Step 5: The forming platform 1 moves down one layer;

[0070] Step 6: The powder feeding chamber 2 moves along the length of the forming platform 1 so that the lower end of the powder feeding chamber 2-2 is directly above the first forming platform 1-1.

[0071] Step 7: Along the width direction of the forming platform 1, the powder feeding bin 2 moves parallel and the second rear roller 5-1 starts to rotate. Under the action of the built-in agitator, the forming powder falls from the lower end of the powder outlet of the second powder feeding bin 2-2 and lands on the first forming platform 1-1. In this step, the second rear roller 5-1 flattens the powder that lands on the first forming platform 1-1 and pushes the excess powder into the powder recycling box 9.

[0072] Step 8: After the powder feeding bin 2 moves to the second side of the forming platform 1, the second rear roller 5-1 stops rotating, and the second front roller 5-2 starts rotating. Under the action of the built-in agitator, the powder falls from the lower end of the powder outlet of the second powder feeding bin 2-2. The powder feeding bin 2 moves back to the first side of the forming platform 1, and the second front roller 5-2 stops rotating. In this step, the second front roller 5-2 flattens the powder that has fallen on the first forming platform 1-1 and pushes the excess powder into the powder recycling box 9. The second layer of bidirectional, efficient, and uniform powder feeding and spreading on the first forming platform 1-1 is completed.

[0073] Step 9: The powder feeding chamber 2 moves along the length of the forming platform 1 so that the lower end of the powder feeding chamber 2-1 is directly above the second forming platform 1-2.

[0074] Step 10: Along the width direction of the forming platform 1, the powder feeding bin 2 moves parallel and the first rear roller 4-1 starts to rotate. Under the action of the built-in agitator, the forming powder falls from the powder outlet at the lower end of the first powder feeding bin 2-1 and lands on the second forming platform 1-2. In this step, the first rear roller 4-1 flattens the powder that has landed on the second forming platform 1-2 and pushes the excess powder into the powder recycling box 9.

[0075] Step 11: After the powder feeding bin 2 moves to the second side of the forming platform 1, the first rear roller 4-1 stops rotating, and the first front roller 4-2 starts rotating. Under the action of the built-in agitator, the forming powder falls from the lower end of the powder outlet of the first powder feeding bin 2-1. The powder feeding bin 2 moves back to the first side of the forming platform 1, and the first front roller 4-2 stops rotating. In this step, the first front roller 4-2 flattens the powder that has fallen on the second forming platform 1-2 and pushes the excess powder into the powder recovery box 9. This completes the second layer of bidirectional, efficient, and uniform powder feeding and spreading on the second forming platform 1-2.

[0076] Step 12: The printhead moves forward from the second side of the forming table to the first side along the guide rail 8 with the printhead pad 7 to complete the second layer printing of the first forming platform 1-1 and the second forming platform 1-2;

[0077] Step 13: The nozzle returns to the second side of the forming table along the guide rail 8 along the nozzle pad 7;

[0078] Step 14: The forming stage 1 moves down one layer, and steps 1-11 are repeated until printing is complete.

[0079] A further improvement of this invention is that more powder feeding bins and forming platforms can be set up according to the existing arrangement, enabling printing of more than three materials. Furthermore, with the increase in the number of arrangement methods, the working stroke of the rollers for bidirectional, efficient, and uniform powder feeding and spreading does not increase in any way.

[0080] Advantages of this invention:

[0081] 1. Solving the problem of printing with only one type of powder: By setting up multiple powder feeding chambers and corresponding forming platforms, the requirement of loading multiple powders at the same time is met, thus enabling simultaneous printing of multiple powders during the printing process.

[0082] 2. Through the improvements in this solution, multi-material printing can be achieved simultaneously when forming multiple workpieces, thus fulfilling the functional requirement of high-throughput forming.

[0083] 2. During the powder spreading process, a bidirectional, efficient, and uniform powder feeding and spreading method was adopted. This means that each layer of powder is fed twice and spread twice, unlike typical bidirectional powder spreading processes. In this method, the working stroke of the rollers is limited only to the width direction of the forming table, with no idle travel time. This approach not only compensates for the uneven powder spreading that may occur with traditional single-pass powder spreading, effectively improving the flatness of the powder-spreading surface and thus enhancing the surface quality of the parts, but also solves the problem of low efficiency in typical bidirectional powder spreading processes.

Claims

1. A high-throughput forming apparatus suitable for adhesive jetting, characterized by, The device comprises a forming table (1), a powder feeding bin (2), rollers, a nozzle plate (6) and a forming table moving device; The forming table (1) comprises a plurality of forming small platforms, and the forming small platforms are arranged in an array; the powder feeding bin (2) comprises a plurality of powder feeding small bins, and the powder feeding small bins are arranged in one-to-one correspondence with the forming small platforms; the bottom of the powder feeding small bin is provided with a powder outlet gap (10); the forming table moving device can drive the powder feeding small bin to move along the powder laying direction, so that the powder in the powder feeding small bin falls on the corresponding forming small platform through the powder outlet gap (10); the rollers are used for flattening the powder on the forming small platform; a plurality of nozzles are arranged on the nozzle plate (6) and used for spraying adhesive on the forming small platform; The bottom of the powder feeding small bin is provided with two rollers, and the powder outlet gap (10) is located between the two rollers and is parallel to the axial direction of the rollers in the length direction; The forming table moving device can drive the powder feeding small bin to move in a direction perpendicular to the powder laying direction, so that the powder feeding small bin corresponds to different forming small platforms; The device further comprises a horizontally arranged guide rail (8), the guide rail (8) is located on one side of the forming table (1), one end of the nozzle plate (6) is slidably connected to the guide rail (8) through a nozzle pad (7), and the nozzle plate (6) can move above the forming table (1) along the guide rail (8).

2. The high-throughput forming apparatus suitable for adhesive jetting of claim 1, wherein, The device further comprises a powder recycling box (9), and the forming table (1) is arranged in the powder recycling box (9).

3. The high-throughput forming apparatus suitable for adhesive jetting of claim 1, wherein, The device further comprises a light rod lifting mechanism (3), the bottom of the forming table (1) is connected to the light rod lifting mechanism (3), and the light rod lifting mechanism (3) is used for lifting the forming table (1).

4. The high-throughput forming apparatus suitable for adhesive jetting of claim 1, wherein, The forming small platforms are separated by partitions.

5. A high-throughput molding method suitable for adhesive jetting, characterized by, Based on the device of claim 1, the forming small platforms comprise a first forming small platform (1-1) and a second forming small platform (1-2), and the powder feeding small bins comprise a first powder feeding small bin (2-1) and a second powder feeding small bin (2-2); The device comprises: Step 1: The forming table moving device moves the powder feeding bin (2), so that the first powder feeding small bin (2-1) is located above the first forming small platform (1-1) and the second powder feeding small bin (2-2) is located above the second forming small platform (1-2); the forming table moving device drives the powder feeding bin (2) to move above the forming table (1) along a first powder laying direction to lay powder, so that the powder in the powder feeding small bin falls on the corresponding forming small platform, and the rollers located at the rear in the first powder laying direction are used for flattening the powder; Step 2: The forming table moving device drives the powder feeding bin (2) to move above the forming table (1) along a second powder laying direction to lay powder, so that the powder in the powder feeding small bin falls on the corresponding forming small platform, and the rollers located at the rear in the second powder laying direction are used for flattening the powder; the second powder laying direction is opposite to the first powder laying direction; Step 3: The nozzle plate (6) moves above the forming table (1) and sprays adhesive on each forming small platform through the nozzles; Step 4: The forming table (1) moves downward by one layer. Step 5, the powder feeding bin (2) is moved by the forming table moving device, so that the second powder feeding sub-bin (2-2) is above the first forming sub-platform (1-1); the powder feeding bin (2) is moved by the forming table moving device above the forming table (1) in the first powder laying direction to lay powder, so that the powder in the second powder feeding sub-bin (2-2) falls on the first forming sub-platform (1-1), and the powder is laid flat by the roller located at the rear in the first powder laying direction; Step 6, the powder feeding bin (2) is moved by the forming table moving device above the forming table (1) in the second powder laying direction to lay powder, so that the powder in the second powder feeding sub-bin (2-2) falls on the first forming sub-platform (1-1), and the powder is laid flat by the roller located at the rear in the second powder laying direction; the second powder laying direction is opposite to the first powder laying direction; Step 7, the powder feeding bin (2) is moved by the forming table moving device, so that the first powder feeding sub-bin (2-1) is above the second forming sub-platform (1-2); the powder feeding bin (2) is moved by the forming table moving device above the forming table (1) in the first powder laying direction to lay powder, so that the powder in the first powder feeding sub-bin (2-1) falls on the second forming sub-platform (1-2), and the powder is laid flat by the roller located at the rear in the first powder laying direction; Step 8, the powder feeding bin (2) is moved by the forming table moving device above the forming table (1) in the second powder laying direction to lay powder, so that the powder in the first powder feeding sub-bin (2-1) falls on the second forming sub-platform (1-2), and the powder is laid flat by the roller located at the rear in the second powder laying direction; the second powder laying direction is opposite to the first powder laying direction; Step 9, the nozzle plate (6) is moved above the forming table (1), and the adhesive is sprayed on each forming sub-platform by the nozzle; Step 10, the forming table (1) is moved downward by one layer, and steps 1-9 are repeated until the printing is completed.

Citation Information

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