A 3DP molding extraction device

Abstract

The utility model provides an extraction device for 3DP molding, comprising a fixed box, a molding platform for molding workpieces and a connecting component. The fixed box is detachably connected to the cylinder barrel through a connecting piece. The top of the fixed box is open and flush with the cylinder mouth of the cylinder barrel, and a plurality of guide holes are opened at the bottom. The upper end of the connecting component is fixedly connected to the bottom of the molding platform, and the lower end is detachably connected to the piston through the plurality of guide holes. The piston can drive the molding platform to descend from a position flush with the top opening of the fixed box to mold the workpiece on the molding platform. The utility model provides an extraction device for 3DP molding, belongs to the field of 3DP printing technology, and is convenient for taking out the molded embryo and sending it into the oven intact.

Description

Technical Field

[0001] The utility model relates to an extraction device for 3DP molding, belonging to the technical field of 3DP printing. Background Art

[0002] At present, 3DP (additive manufacturing) molding technology has been well developed in many fields. The prior art CN108000870A discloses the 3DP process. When printing starts, the powder is spread on the workbench as the molding material. After the powder is spread, the nozzle obtains the layer data according to the 3D model slice, and the binder is sprayed on the powder surface as needed under the control of the computer to achieve single-layer powder bonding. After the single-layer binder is sprayed, the workbench drops one layer thickness and starts the next layer of powder spreading. The workbench is installed on the piston of the molding cylinder, and the workbench drops with the piston rod, and so on, until the last layer of printing is completed and the product is taken out.

[0003] Small-scale 3DP non-metallic printing, such as the molding of salt cores and ceramic powders, has a small workpiece volume and the initial strength of the molded body is very weak. It needs to be cured at high temperature in an oven. Direct removal or removal using a removal plate can easily cause vibration and breakage of the workpiece. The problem of weak body strength has troubled many process developers.

[0004] Therefore, there is an urgent need for an extraction auxiliary device to prevent the internal fracture of the formed blank when taking out the formed blank. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an extraction device for 3DP molding, which is convenient for taking out the molded embryo and sending it into the oven intact.

[0006] The utility model solves the above-mentioned technical problems with a technical solution as follows: an extraction device for 3DP molding, wherein the molding cylinder comprises a cylinder barrel and a piston, the piston is slidably connected in the cylinder barrel, the extraction device is installed in the cylinder barrel, the extraction device comprises a fixed box, a molding platform for molding workpieces and a connecting component, the fixed box is detachably connected to the cylinder barrel through a connecting piece, the top of the fixed box is open and flush with the cylinder mouth of the cylinder barrel, a plurality of guide holes are provided at the bottom, the upper end of the connecting component is fixedly connected to the bottom of the molding platform, and the lower end is detachably connected to the piston through the plurality of guide holes correspondingly, the piston can drive the molding platform to descend from a position flush with the top opening of the fixed box, and mold the workpiece on the molding platform.

[0007] The beneficial effects of the utility model are as follows: the fixed box is installed in the cylinder, the cylinder mouth of the cylinder is flush with the top opening of the fixed box, the molding platform is flush with the top of the fixed box, the connecting component is connected to the piston, and when the 3D printer molds a layer on the molding platform, the piston moves downward a distance of one layer, and after the molding is completed layer by layer, the connecting component is disconnected from the piston, and the fixed box is taken out of the cylinder, and sent to the oven for heating and curing together with the fixed box as a whole, which solves the technical problem of internal fracture in the process of removing the workpiece and sending it to the oven after the workpiece is molded on the piston in the prior art.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the forming platform includes a forming plate and a plurality of positioning blocks, wherein the plurality of positioning blocks are fixed at the bottom of the forming plate, and a plurality of positioning holes are provided at the bottom of the fixed box corresponding to the plurality of positioning blocks. The upper end of the connecting assembly is fixedly connected to the bottom of the forming plate, and the piston can drive the forming plate to descend from a position flush with the top opening of the fixed box to form a workpiece on the forming plate.

[0010] The beneficial effects of adopting the above further scheme are as follows: the piston is connected to the connecting assembly, and the 3D printer forms the workpiece on the forming plate. After the workpiece is formed, the forming plate drops to the bottom of the fixed box, and multiple positioning blocks are correspondingly inserted into multiple positioning holes to ensure the stability of the forming plate and prevent the workpiece from breaking due to shaking when taking out the fixed box.

[0011] Furthermore, the connecting assembly includes a plurality of guide posts and a plurality of groups of electric wires, the plurality of groups of electric wires are correspondingly spirally wound on the plurality of guide posts, the plurality of guide posts are correspondingly slidably connected in the plurality of guide holes, and the upper ends thereof are fixedly connected to the bottom of the forming plate, and when the electric wires are energized, the lower ends of the guide posts generate magnetic force to be adsorbed on the piston.

[0012] The beneficial effects of adopting the above further scheme are as follows: after the electric wire is energized, the bottom end of the guide column is magnetic and can be firmly adsorbed on the piston, and the forming plate is driven down by the guide column; by energizing the guide column, magnetism is generated and adsorbed on the piston, the structure is simple, and disassembly is convenient.

[0013] Furthermore, the guide column is made of high-magnetic high-carbon steel.

[0014] Furthermore, the connecting member includes two connecting plates, which are symmetrically arranged and one side is rotatably connected to the top of the side plate of the fixed box. Both connecting plates are provided with fixing holes, and bolts pass through the fixing holes to fix the two connecting plates to the cylinder.

[0015] The beneficial effect of adopting the above further scheme is as follows: the two connecting plates are rotatably connected to the fixed box, and when the fixed box is embedded in the cylinder, the two connecting plates are located on both sides of the outside of the cylinder, and the bolts pass through the fixing holes to fix the connecting plates to the cylinder so that the fixed box is fixed in the cylinder.

[0016] Furthermore, the two connecting plates are provided with lifting holes for lifting the fixing box.

[0017] The beneficial effect of adopting the above further solution is that the fixing box can be taken out from the cylinder barrel by passing the palm through the lifting hole, which is more convenient.

[0018] Furthermore, the connecting member also includes two hinges, and the two connecting plates are rotatably connected to the top of the side plate of the fixed box through the two hinges.

[0019] Furthermore, the outer wall of the fixed box is in sliding contact with the inner wall of the cylinder.

[0020] Furthermore, the height of the fixed box is half of the maximum depth of the cylinder.

[0021] The beneficial effect of adopting the above further scheme is: ensuring that the sliding stroke of the molding plate can be the height of the fixed box, that is, it can reach the bottom of the fixed box, so that multiple positioning blocks are correspondingly inserted into multiple positioning holes to ensure the stability of the molding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of a fixed box in a 3DP molding extraction device provided by the utility model;

[0023] Figure 2 A longitudinal section view of a 3DP molding extraction device provided by the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a molding platform in a 3DP molding extraction device provided by the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of a 3DP molding extraction device provided by the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a 3DP molding extraction device provided by the utility model from a top view angle.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1-fixing box, 11-guide hole, 12-positioning hole, 2-molding platform, 21-molding plate, 22-positioning block, 3-connecting assembly, 31-guide column, 32-electric wire, 4-connecting plate, 41-fixing hole, 42-lifting hole. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] The utility model aims to provide an extraction device for 3DP molding, so as to solve the problems existing in the prior art and facilitate the removal of the molded embryo and send it into the oven intact.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] The utility model provides an extraction device for 3DP molding, such as Figures 1 to 5 As shown, the forming cylinder includes a cylinder barrel and a piston, the piston is slidably connected in the cylinder barrel, the extraction device is installed in the cylinder barrel, the extraction device includes a fixed box 1, a forming platform 2 for forming a workpiece and a connecting component 3, the fixed box 1 is detachably connected to the cylinder barrel through a connecting piece, the top of the fixed box 1 is open and flush with the cylinder mouth of the cylinder barrel, and a plurality of guide holes 11 are opened at the bottom, the upper end of the connecting component 3 is fixedly connected to the bottom of the forming platform 2, and the lower end is detachably connected to the piston through the plurality of guide holes 11 correspondingly, and the piston can drive the forming platform 2 to descend from a position flush with the top opening of the fixed box 1 to form the workpiece on the forming platform 2.

[0033] The utility model provides an extraction device for 3DP molding, in which a fixed box 1 is installed in a cylinder, a cylinder mouth of the cylinder is flush with a top opening of the fixed box 1, a molding platform 2 is flush with the top of the fixed box 1, a connecting component 3 is connected to a piston, and when the 3D printer molds a layer on the molding platform 2, the piston moves downward a distance of a layer, and after molding layer by layer is completed, the connecting component 3 is disconnected from the piston, and the fixed box 1 is taken out of the cylinder, and the fixed box 1 is sent to an oven for heating and curing together with the fixed box 1, thereby solving the technical problem of internal fracture in the prior art when the workpiece is taken out and sent to the oven after being molded on the piston.

[0034] In a specific embodiment of the utility model, the forming platform 2 includes a forming plate 21 and a plurality of positioning blocks 22, the plurality of positioning blocks 22 are fixed at the bottom of the forming plate 21, a plurality of positioning holes 12 are opened at the bottom of the fixed box 1 corresponding to the plurality of positioning blocks 22, the upper end of the connecting component 3 is fixedly connected to the bottom of the forming plate 21, and the piston can drive the forming plate 21 to descend from a position flush with the top opening of the fixed box 1 to form a workpiece on the forming plate 21.

[0035] The piston is connected to the connecting assembly 3, and the 3D printer forms a workpiece on the forming plate 21. After the workpiece is formed, the forming plate 21 drops to the bottom of the fixed box 1, and a plurality of positioning blocks 22 are correspondingly inserted into a plurality of positioning holes 12 to ensure the stability of the forming plate 21 and prevent the workpiece from breaking due to shaking when the fixed box 1 is taken out.

[0036] In a specific embodiment of the utility model, the connecting assembly 3 includes a plurality of guide posts 31 and a plurality of groups of electric wires 32. The plurality of groups of electric wires 32 are correspondingly spirally wound on the plurality of guide posts 31. The plurality of guide posts 31 are correspondingly slidably connected in the plurality of guide holes 11, and the upper ends thereof are fixedly connected to the bottom of the forming plate 21. When the electric wires 32 are energized, the lower ends of the guide posts 31 generate magnetic force to be adsorbed on the piston.

[0037] After the power line 32 is energized, the bottom end of the guide column 31 is magnetic and can be firmly adsorbed on the piston, driving the forming plate 21 to descend through the guide column 31; by energizing the guide column 31, magnetism is generated and adsorbed on the piston, the structure is simple, and disassembly is convenient.

[0038] In a specific embodiment of the present invention, the guide post 31 is made of high-magnetic high-carbon steel.

[0039] In a specific embodiment of the utility model, the connecting member includes two connecting plates 4, which are symmetrically arranged and one side is rotatably connected to the top of the side plate of the fixed box 1. Both connecting plates 4 are provided with fixing holes 41, and bolts pass through the fixing holes 41 to fix the two connecting plates 4 on the cylinder.

[0040] The two connecting plates 4 are rotatably connected to the fixed box 1. When the fixed box 1 is embedded in the cylinder, the two connecting plates 4 are located on both sides of the outside of the cylinder. Bolts pass through the fixing holes 41 to fix the connecting plates 4 on the cylinder so that the fixed box 1 is fixed in the cylinder.

[0041] In a specific embodiment of the present invention, the two connecting plates 4 are both provided with lifting holes 42 for lifting and fixing the box 1 .

[0042] The fixing box 1 can be taken out from the cylinder barrel by passing the palm through the lifting hole 42, which is more convenient.

[0043] In a specific embodiment of the utility model, the connecting member further comprises two hinges, and the two connecting plates 4 are rotatably connected to the top of the side plate of the fixed box 1 through the two hinges.

[0044] In a specific embodiment of the present invention, the outer wall of the fixed box 1 is in sliding contact with the inner wall of the cylinder.

[0045] In a specific embodiment of the present invention, the height of the fixed box 1 is half of the maximum depth of the cylinder.

[0046] It is ensured that the sliding stroke of the molding plate 21 can be the height of the fixed box 1 , that is, can reach the bottom of the fixed box 1 , so that the multiple positioning blocks 22 are correspondingly inserted into the multiple positioning holes 12 to ensure the stability of the molding plate 21 .

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 3DP molding extraction device, wherein the molding cylinder comprises a cylinder barrel and a piston, wherein the piston is slidably connected in the cylinder barrel, and the extraction device is installed in the cylinder barrel, characterized in that: The invention comprises a fixed box (1), a molding platform (2) for molding a workpiece, and a connecting assembly (3); the fixed box (1) is detachably connected to the cylinder barrel via a connecting piece; the top of the fixed box (1) is open and flush with the cylinder mouth of the cylinder barrel; a plurality of guide holes (11) are provided at the bottom; the upper end of the connecting assembly (3) is fixedly connected to the bottom of the molding platform (2); the lower end passes through the plurality of guide holes (11) and is detachably connected to the piston; the piston can drive the molding platform (2) to descend from a position flush with the top opening of the fixed box (1) to mold the workpiece on the molding platform (2).

2. The 3DP molding extraction device according to claim 1, characterized in that: The molding platform (2) comprises a molding plate (21) and a plurality of positioning blocks (22), wherein the plurality of positioning blocks (22) are fixed to the bottom of the molding plate (21), and the bottom of the fixed box (1) is provided with a plurality of positioning holes (12) corresponding to the plurality of positioning blocks (22). The upper end of the connecting component (3) is fixedly connected to the bottom of the molding plate (21), and the piston can drive the molding plate (21) to descend from a position flush with the top opening of the fixed box (1), so as to mold a workpiece on the molding plate (21).

3. The extraction device for 3DP molding according to claim 2, characterized in that: The connection assembly (3) comprises a plurality of guide posts (31) and a plurality of groups of current-carrying wires (32), wherein the plurality of groups of current-carrying wires (32) are correspondingly spirally wound on the plurality of guide posts (31), and the plurality of guide posts (31) are correspondingly slidably connected in the plurality of guide holes (11), and the upper ends thereof are fixedly connected to the bottom of the forming plate (21), and the current-carrying wires (32) are energized so that the lower ends of the guide posts (31) generate magnetic force to be adsorbed on the piston.

4. The 3DP molding extraction device according to claim 3, characterized in that: The guide column (31) is made of high-magnetic high-carbon steel.

5. The 3DP molding extraction device according to claim 1, characterized in that: The connecting member comprises two connecting plates (4), the two connecting plates (4) are symmetrically arranged and one side is rotatably connected to the top of the side plate of the fixing box (1), and the two connecting plates (4) are both provided with fixing holes (41), and bolts pass through the fixing holes (41) to fix the two connecting plates (4) to the cylinder barrel.

6. The 3DP molding extraction device according to claim 5, characterized in that: Both of the two connecting plates (4) are provided with lifting holes (42) for lifting the fixed box (1).

7. The 3DP molding extraction device according to claim 5, characterized in that: The connecting member also includes two hinges, and the two connecting plates (4) are rotatably connected to the top of the side plate of the fixed box (1) through the two hinges.

8. The 3DP molding extraction device according to claim 1, characterized in that: The outer wall of the fixed box (1) is in sliding contact with the inner wall of the cylinder.

9. The 3DP molding extraction device according to claim 1, characterized in that: The height of the fixed box (1) is half of the maximum depth of the cylinder.

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