Molding device and molding method

Abstract

The present application relates to a molding device and a molding method. The molding device is used to mold a green body. The green body is provided with a flow channel. The flow channel has a first end and a second end arranged opposite to each other. The molding device includes a fixing component and a silo. The fixing component is used to fix the green body and has a first channel connected to the second end of the flow channel. The silo has a receiving groove for containing slurry and connected to the first end of the flow channel. The green body on the fixing component extends into the receiving groove. The slurry in the receiving groove is configured to be pre-cured under preset conditions and can be transported to the flow channel of the green body under a preset pressure to fill the flow channel of the green body. The molding device can solve the problem that fine structures are not easy to fill.

Description

Technical Field

[0001] The present application relates to the technical field of material processing, and in particular to a molding device and a molding method. Background Art

[0002] In the related art, a mold is usually used to form a product, slurry is poured into the mold, the slurry is pre-cured, and then the mold is removed to obtain the product. However, this traditional molding method has the problem that fine structures are not easy to fill. Summary of the invention

[0003] Based on this, it is necessary to provide a molding device and a molding method to address the problem that fine structures are difficult to fill in the mold in traditional molding methods.

[0004] According to one aspect of the present application, a molding device is provided, the molding device is used to mold a green body, the green body is provided with a flow channel, the flow channel has a first end and a second end arranged oppositely, the molding device comprises:

[0005] A fixing component, used for fixing the green body and having a first channel connected to the second end of the flow channel;

[0006] A silo having a holding tank for holding slurry and communicating with the first end of the flow channel;

[0007] The green body on the fixing component extends into the receiving groove, and the slurry in the receiving groove is configured to be pre-cured under preset conditions and to be transported to the flow channel of the green body under a preset pressure to fill the flow channel of the green body.

[0008] In one of the embodiments, the molding device further includes a negative pressure tube, which is connected to the fixing component and communicated with an end of the first channel away from the flow channel.

[0009] In one embodiment, the green body includes a main body portion and a surplus portion connected to the main body portion;

[0010] The flow channel runs through the main body;

[0011] The redundant portion is connected to the fixing component, and a second channel is penetrated through the redundant portion and is respectively connected to the second end of the flow channel and the first channel.

[0012] In one embodiment, the fixing component further has a transition groove connected between the first channel and the negative pressure tube;

[0013] The molding device further comprises a molding table which is sealed and connected to the notch of the transition groove. The negative pressure pipe is arranged on the molding table. The molding table is provided with a third channel which is respectively connected to the negative pressure pipe and the transition groove.

[0014] In one embodiment, the volume of the transition groove is greater than the volume of the flow channel, and greater than the volume of the third channel.

[0015] In one embodiment, a plurality of green sheets are disposed on the fixing component, and the redundant portion of each green sheet is connected to the fixing component;

[0016] The fixing component is provided with a plurality of the first channels corresponding to the green compacts one by one;

[0017] The flow channels of the plurality of green compacts are all connected to the negative pressure tube through the corresponding first channel, the transition groove and the third channel.

[0018] In one embodiment, the green body and the fixing component are integrally formed.

[0019] In one embodiment, the radial dimension of the excess portion is smaller than the radial dimension of the main portion, and the excess portion and the main portion define a slot;

[0020] The fixing component is provided with a clamping portion adapted to the clamping slot;

[0021] The green compact and the fixing component are engaged with each other by means of the engaging groove and the engaging portion.

[0022] According to another aspect of the present application, there is provided a molding method, comprising:

[0023] Providing a green body, wherein the green body is provided with a flow channel;

[0024] Allowing the flow channel of the green body to extend into the slurry;

[0025] allowing the slurry to be delivered into the flow channel of the green body at a preset pressure to fill the flow channel of the green body;

[0026] The slurry filling the flow channel of the green body is pre-cured.

[0027] In one embodiment, providing a green body specifically comprises:

[0028] The green body with the flow channel is generated by using a photo-curing 3D printing technology.

[0029] The above-mentioned molding device and molding method, when the molding device is used, the green body can be fixed on the fixed component, and the green body on the fixed component is extended into the receiving groove, and the flow channel of the green body is extended into the slurry in the receiving groove, so that the slurry in the receiving groove can be transported to the flow channel of the green body at a preset pressure to fill the flow channel of the green body, and the slurry filled in the flow channel of the green body is pre-cured under preset conditions. The molding device can be used to transport the slurry to the flow channel of the green body at a preset pressure. It can be understood that the slurry can be transported to the flow channel with a fine structure at a preset pressure to solve the problem that the fine structure is not easy to fill. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic structural diagram of a molding device in an embodiment of the present application is shown;

[0031] Figure 2 A schematic structural diagram of a molding device in another embodiment of the present application is shown;

[0032] Figure 3 A schematic structural diagram of a green body in an embodiment of the present application is shown (the flow channel structure is a first structure);

[0033] Figure 4 A schematic structural diagram of a green body in an embodiment of the present application is shown (the flow channel structure is the second structure);

[0034] Figure 5 A schematic diagram of the structure of a green body in an embodiment of the present application is shown (the flow channel structure is the third structure);

[0035] Figure 6 A schematic diagram showing the structure of a green body and a fixing component in an embodiment of the present application is shown;

[0036] Figure 7 A schematic flow chart of a molding method according to an embodiment of the present application is shown.

[0037] Among them: 10, forming device; 110, fixing component; 111, first channel; 112, transition groove; 113, clamping part; 120, silo; 121, containing groove; 130, light source; 140, negative pressure tube; 150, forming table; 151, third channel; 20, green body; 21, main body; 211, flow channel; 2111, first end; 2112, second end; 22, excess part; 221, second channel; 23, clamping groove. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] In the related art, a product is usually formed by using a mold, pouring slurry into the mold, and after the slurry is pre-cured, the mold is removed to obtain the product.

[0045] The inventors of the present application have discovered through research that in conventional molding methods, if there are fine channels in the mold, it is difficult for the poured slurry to enter the fine channels, which in turn causes the problem that the fine structure is difficult to fill in the mold in conventional molding methods.

[0046] After in-depth research, the inventors of this application designed a molding device and a molding method. The molding device includes a silo and a fixing component for fixing the green body, the fixing component has a first channel connected to the second end of the flow channel, and the silo has a receiving tank for containing slurry and connected to the first end of the flow channel. The slurry in the receiving tank can be first transported to the flow channel of the green body under a preset pressure to fill the flow channel of the green body, and then the slurry filled in the flow channel can be pre-cured under preset conditions.

[0047] Figure 1 A schematic structural diagram of a forming device 10 in an embodiment of the present application is shown.

[0048] See also Figure 1 , and refer to Figure 2 A molding device 10 provided in an embodiment of the present application is used to mold a green body 20. The green body 20 is provided with a flow channel 211. The flow channel 211 has a first end 2111 and a second end 2112 that are arranged opposite to each other.

[0049] The molding device 10 includes a fixing component 110 and a silo 120. The fixing component 110 is used to fix the green body 20 and has a first channel 111 connected to the second end 2112 of the flow channel 211. The silo 120 has a receiving groove 121 for receiving slurry and connected to the first end 2111 of the flow channel 211. The green body 20 on the fixing component 110 extends into the receiving groove 121. The slurry in the receiving groove 121 is configured to be able to be pre-cured under preset conditions and can be transported to the flow channel 211 of the green body 20 under a preset pressure to fill the flow channel 211 of the green body 20.

[0050] When the molding device 10 is used, the green body 20 can be fixed on the fixing part 110, and the green body 20 on the fixing part 110 can be extended into the receiving groove 121, and the flow channel 211 of the green body 20 can be extended into the slurry in the receiving groove 121, so that the slurry in the receiving groove 121 can be transported to the flow channel 211 of the green body 20 under a preset pressure to fill the flow channel 211 of the green body 20, and the slurry filled in the flow channel 211 of the green body 20 is pre-cured under preset conditions. The molding device 10 can be used to transport the slurry to the flow channel 211 of the green body 20 under a preset pressure. It can be understood that the slurry can be transported to the flow channel 211 with a fine structure under a preset pressure to solve the problem that the fine structure is not easy to fill.

[0051] If the material of the slurry is different from that of the green body 20 , the molding device 10 of the present application can be used to implement multi-material molding, thereby achieving the purpose of enhancing the overall structural performance and functionalization.

[0052] It should be noted that the slurry can be a photocurable slurry, and the preset condition is ultraviolet light with a preset irradiation intensity (such as Figure 1 The slurry may also be a heat-cured slurry (such as Figure 2 As shown in FIG. 2 ), the preset condition is a condition that the slurry filled in the flow channel 211 is heated to a preset temperature. Of course, the slurry can also be a slurry that can be pre-cured under other conditions other than ultraviolet light and the condition that the slurry filled in the flow channel 211 is heated to a preset temperature, and no specific limitation is made here. Exemplarily, the slurry includes photosensitive resin, light-cured ceramic (metal) slurry, filler, etc.

[0053] The material of the green body 20 may be metal, ceramic, or other materials, which are not specifically limited herein, and the size of the green body 20 is not specifically limited either.

[0054] The above-mentioned “preliminary curing” means that the slurry filled in the flow channel 211 can be cured to a state where it cannot flow out of the flow channel 211 .

[0055] The above-mentioned “the slurry in the containing tank 121 is configured to be transported to the flow channel 211 of the green body 20 at a preset pressure to fill the flow channel 211 of the green body 20” may be that the slurry in the containing tank 121 is pumped into the flow channel 211 of the green body 20 at a preset positive pressure of a transport pump to fill the flow channel 211 of the green body 20, or the slurry in the containing tank 121 is pumped into the flow channel 211 of the green body 20 at a preset negative pressure of a vacuum pump to fill the flow channel 211 of the green body 20. The preset pressure may be a preset positive pressure or a preset negative pressure, which is not specifically limited here.

[0056] In some embodiments, see Figure 1The molding device 10 further includes a light source 130 corresponding to the slurry. The slurry is a light-curing slurry. The light source 130 can pre-cure the slurry in the flow channel 211 when turned on.

[0057] In this embodiment, the material bin 120 is a transparent material bin, and the light source 130 is disposed toward the material bin 120 and toward the flow channel 211 of the green body 20 so as to pre-cure the slurry in the flow channel 211 .

[0058] In some embodiments, the green body 20 is a photocurable material, and the light source 130 is placed directly below the silo 120. The light source 130 irradiates from bottom to top. The light source 130 can be used to cure the green body layer on the surface of the silo 120, and then the green body 20 is obtained by stacking layers.

[0059] In some embodiments, the light source 130 includes a DLP light source (ultraviolet projector), a SLA light source (ultraviolet laser), and an LCD light source.

[0060] In some embodiments, see Figure 1 and Figure 2 The molding device 10 further includes a negative pressure tube 140 , which is connected to the fixing component 110 and communicates with an end of the first channel 111 away from the flow channel 211 .

[0061] The negative pressure pipe 140 may be connected to a suction device so that the slurry in the containing tank 121 is pumped into the flow channel 211 of the green body 20 under a preset negative pressure to fill the flow channel 211 of the green body 20. In this way, it is possible to avoid defects such as bubbles in the process of filling the flow channel 211 of the green body 20 with slurry. Exemplarily, the suction device may be a vacuum pump.

[0062] In some embodiments, see Figure 1 and Figure 2 , and refer to Figure 3-5 The green body 20 includes a main body portion 21 and a surplus portion 22 connected to the main body portion 21, a flow channel 211 passes through the main body portion 21, the surplus portion 22 is connected to the fixing component 110, and the surplus portion 22 passes through a second channel 221 which is respectively connected to the second end 2112 of the flow channel 211 and the first channel 111.

[0063] When the molding device 10 is used, the green body 20 can be fixed on the fixing component 110, and the fixing component 110 is lifted to move the green body 20 out of the receiving tank 121, and gas (air) is introduced into the first channel 111 through the negative pressure pipe 140 to blow out the residual impurities in the flow channel 211 of the green body 20; then the green body 20 on the fixing component 110 is extended into the receiving tank 121, and the flow channel 211 of the green body 20 is extended into the slurry in the receiving tank 121, and the suction device uses the negative pressure pipe 140 to suck air outwards so that a preset negative pressure is formed in the flow channel 211 of the green body 20, so that the slurry in the receiving tank 121 can be transported to the flow channel 211 of the green body 20 under the preset pressure (preset negative pressure). In the channel 211, the flow channel 211 filled with the green body 20 is formed; then the slurry filled in the flow channel 211 of the green body 20 is pre-cured under the preset conditions; after the slurry filled in the flow channel 211 of the green body 20 is pre-cured, the excess part 22 of the green body 20 can be separated from the fixing part 110, and then the excess part 22 of the green body 20 is removed. The excess part 22 of the green body 20 can be removed by machining. For example, the excess part 22 of the green body 20 can be removed by cutting first and then grinding, or by grinding. Of course, other machining methods can also be used to remove the excess part 22 of the green body 20, which is not specifically limited here. The setting of the excess part 22 can provide a processing allowance, which is conducive to ensuring the integrity and processing accuracy of the main part 21 of the green body 20.

[0064] In some embodiments, see Figure 1 and Figure 2 The fixing component 110 also has a transition groove 112 connected between the first channel 111 and the negative pressure tube 140. The molding device 10 also includes a molding table 150 sealedly connected to the notch of the transition groove 112. The negative pressure tube 140 is arranged on the molding table 150. The molding table 150 is provided with a third channel 151 respectively connected to the negative pressure tube 140 and the transition groove 112.

[0065] A transition groove 112 is provided. When the slurry in the containing groove 121 is transported to the flow channel 211 of the green body 20 under a preset pressure (preset negative pressure), the slurry can overflow into the transition groove 112. The overflowing slurry is stored in the transition groove 112, so that the slurry can be prevented from flowing to the negative pressure pipe 140 under the preset pressure and blocking the negative pressure pipe 140.

[0066] Specifically, the forming table 150 blocks the notch of the transition groove 112 , and the side of the forming table 150 facing the notch of the transition groove 112 is bonded to the fixing component 110 , so that the forming table 150 is sealed and connected to the notch of the transition groove 112 .

[0067] The negative pressure pipe 140 is sealed and connected to one end of the third channel 151 away from the transition tank 112 to better ensure that the slurry in the containing tank 121 can be transported to the flow channel 211 of the green body 20 under a preset pressure (preset negative pressure) to fill the flow channel 211 of the green body 20.

[0068] In some embodiments, the volume of the transition groove 112 is greater than the volume of the flow channel 211 , and greater than the volume of the third channel 151 .

[0069] On the one hand, the transition groove 112 can be used to better prevent the slurry from flowing to the negative pressure pipe 140 under a preset pressure and blocking the negative pressure pipe 140. On the other hand, the volume of the transition groove 112 is greater than the volume of the third channel 151, which is conducive to sucking the slurry into the flow channel 211 of the green body 20 by means of the suction device and the negative pressure pipe 140 to fill the flow channel 211 of the green body 20.

[0070] In some embodiments, see Figure 1 and Figure 2 A plurality of green bodies 20 are arranged on the fixing part 110, and the excess part 22 of each green body 20 is connected to the fixing part 110. A plurality of first channels 111 corresponding to the green bodies 20 are arranged on the fixing part 110. The flow channels 211 of the plurality of green bodies 20 are all connected to the negative pressure pipe 140 through the corresponding first channels 111, transition grooves 112 and third channels 151.

[0071] It is equivalent to that a plurality of green compacts 20 share one transition groove 112. Thus, the slurry can be sucked into the flow channels 211 of the plurality of green compacts 20 by means of the suction device and the negative pressure tube 140 to fill the flow channel 211 of each green compact 20. Then, the slurry filling the flow channel 211 of each green compact 20 is pre-cured. Thus, the molding device 10 can be used to simultaneously realize the molding of a plurality of green compacts 20.

[0072] In some embodiments, the green body 20 and the fixing component 110 are integrally formed. The green body 20 and the fixing component 110 can be printed together by 3D printing technology. Other methods can also be used to integrally form the green body 20 and the fixing component 110. It should be noted that during the integral forming process, it is necessary to ensure that the excess portion 22 of the green body 20 is integrally formed with the fixing component 110, and the main body 21 of the green body 20 and the fixing component 110 do not contact each other.

[0073] In other embodiments, the excess portion 22 of the green body 20 is detachably connected to the fixing component 110. The excess portion 22 of the green body 20 may be bonded to the fixing component 110, or the excess portion 22 of the green body 20 may be snapped to the fixing component 110. Of course, other detachable methods may also be used to connect the excess portion 22 of the green body 20 to the fixing component 110.

[0074] Specific to Figure 6 In the illustrated embodiment, the radial dimension of the excess portion 22 is smaller than the radial dimension of the main portion 21, and the excess portion 22 and the main portion 21 define a slot 23, the fixing component 110 is provided with a snap-fitting portion 113 adapted to the slot 23, and the green body 20 and the fixing component 110 are snap-fitted by means of the slot 23 and the snap-fitting portion 113.

[0075] In this way, during the forming process of the green body 20 , the green body 20 can be clamped to the fixing component 110 , and after the slurry in the flow channel 211 of the green body 20 is pre-cured, the green body 20 can be easily removed to further remove the excess portion 22 of the green body 20 .

[0076] In some embodiments, the silo 120 is provided with a heating mechanism, which can heat the silo 120 to heat the temperature of the slurry in the silo to 30-120°C.

[0077] In some embodiments, the molding device 10 of the present application may be applicable to slurries with different viscosities, and the viscosity of the slurry in the silo 120 may be 1-100000 mPa·s.

[0078] Figure 7 A schematic flow chart of a molding method according to an embodiment of the present application is shown.

[0079] See also Figure 7 , a molding method provided in one embodiment of the present application comprises the following steps:

[0080] S310 , providing a green body 20 , wherein the green body 20 is provided with a flow channel 211 .

[0081] S320, extending the flow channel 211 of the green body 20 into the slurry.

[0082] S330, delivering the slurry to the flow channel 211 of the green body 20 under a preset pressure to fill the flow channel 211 of the green body 20;

[0083] S340 , pre-curing the slurry filling the flow channel 211 of the green body 20 .

[0084] By using this molding method, multi-material molding can be realized, and the slurry can be conveyed to the flow channel 211 with a fine structure under a preset pressure to solve the problem that the fine structure is difficult to fill.

[0085] In some embodiments, before step S320 of extending the flow channel 211 of the green body 20 into the slurry, the molding method further includes:

[0086] S311 , the green body 20 is moved out of the containing tank 121 , and gas (air) is introduced into the first channel 111 through the negative pressure pipe 140 to blow out the residual impurities in the flow channel 211 of the green body 20 .

[0087] Avoid the residual impurities in the flow channel 211 of the green body 20 affecting the quality of the green body 20 after molding.

[0088] In some embodiments, step S310 of providing the green body 20 specifically includes:

[0089] The green body 20 with the flow channel 211 is generated by using the light-curing 3D printing technology.

[0090] The green body 20 with the flow channel 211 can be generated by using the light-curing 3D printing technology. The green body 20 has a high molding speed and the structure can be designed as needed to form a flow channel 211 with a fine structure (such as Figure 5 shown).

[0091] In some other embodiments, the step S310 of providing the green body 20 specifically includes:

[0092] The green body 20 having the flow channel 211 and the fixing component 110 connected to the excess part 22 of the green body 20 are generated by using the light-curing 3D printing technology.

[0093] In some embodiments, the step S330 of delivering the slurry to the flow channel 211 of the green body 20 at a preset pressure to fill the flow channel 211 of the green body 20 specifically includes:

[0094] The slurry is sucked into the flow channel 211 of the green body 20 under a preset negative pressure to fill the flow channel 211 of the green body 20 .

[0095] On the one hand, it can ensure that the slurry can be pumped into the flow channel 211 with fine structures under a preset negative pressure to solve the problem that the fine structures are difficult to fill. On the other hand, it is not easy to generate defects such as bubbles in the flow channel 211.

[0096] In some embodiments, see Figure 7 The molding method further comprises:

[0097] S350, separating the green body 20 from the fixing component 110, and removing the excess portion 22 of the green body 20. For example, the excess portion 22 of the green body 20 may be removed by machining such as grinding.

[0098] S360, placing the main body 21 of the green body 20 in an oven and keeping it warm for 0.2-5 hours at a temperature of 50-300°C.

[0099] This is conducive to further solidification of the slurry in the flow channel 211 of the green body 20, so that the solidification reaction is complete. At the same time, it can also make the small molecules in the main part 21 of the green body 20 react at high temperature to form polymers, so as to improve the overall structural strength of the green body 20 and the solidified slurry. In addition, it can also form a good interface bonding at the contact point between the slurry and the inner wall of the flow channel 211, and the solidified slurry is not easy to separate from the main part 21 of the green body 20 during the sintering process.

[0100] In some embodiments, at least one of the material of the main body 21 of the green body 20 and the material of the slurry includes at least one of metal and ceramic. The material of the main body 21 of the green body 20 may be metal, and the material of the slurry may be ceramic, or the material of the main body 21 of the green body 20 may be ceramic A, and the material of the slurry may be ceramic B.

[0101] The molding method also includes:

[0102] S370 , performing degreasing and sintering treatment on the whole formed by the solidified slurry and the main part 21 of the green body 20 , so as to further improve the structural strength and density of the whole formed by the solidified slurry and the main part 21 of the green body 20 .

[0103] The molding device 10 and molding method utilize light-curing 3D printing technology to rapidly manufacture a green body 20 with high precision and complex flow channels 211 .

[0104] The high-viscosity slurry can be compounded with the green body 20 by vacuum casting or die casting, so as to realize multi-material compounding and achieve the purpose of enhancing the overall structural performance and functionalization.

[0105] This molding method has the advantages of fast process and flexibility.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A molding device, characterized in that: The molding device is used to mold a green body, the green body is provided with a flow channel, the flow channel has a first end and a second end arranged oppositely, and the molding device comprises: A fixing component, used for fixing the green body and having a first channel connected to the second end of the flow channel; A silo having a holding tank for holding slurry and communicating with the first end of the flow channel; The green body on the fixing component extends into the containing tank, and the slurry in the containing tank is configured to be pre-cured under preset conditions and to be transported to the flow channel of the green body under a preset pressure to fill the flow channel of the green body; Wherein, the preset pressure is a preset negative pressure; The green body comprises a main body portion and a redundant portion connected to the main body portion; The flow channel runs through the main body; The redundant portion is connected to the fixing component, and a second channel is penetrated through the redundant portion and is respectively connected to the second end of the flow channel and the first channel.

2. The molding device according to claim 1, characterized in that: The molding device further comprises a negative pressure tube, which is connected to the fixing component and communicated with an end of the first channel away from the flow channel.

3. The molding device according to claim 2, characterized in that: The fixing component also has a transition groove connected between the first channel and the negative pressure tube; The molding device further comprises a molding table which is sealed and connected to the notch of the transition groove. The negative pressure pipe is arranged on the molding table. The molding table is provided with a third channel which is respectively connected to the negative pressure pipe and the transition groove.

4. The molding device according to claim 3, characterized in that: The volume of the transition groove is greater than the volume of the flow channel, and greater than the volume of the third channel.

5. The molding device according to claim 3, characterized in that: A plurality of green sheets are arranged on the fixing component, and the redundant portion of each green sheet is connected to the fixing component; The fixing component is provided with a plurality of the first channels corresponding to the green compacts one by one; The flow channels of the plurality of green compacts are all connected to the negative pressure tube through the corresponding first channel, the transition groove and the third channel.

6. The molding device according to claim 1, characterized in that: The green body and the fixing component are integrally formed.

7. The molding device according to claim 1, characterized in that: The radial dimension of the redundant portion is smaller than the radial dimension of the main portion, and the redundant portion and the main portion define a card slot; The fixing component is provided with a clamping portion adapted to the clamping slot; The green compact and the fixing component are engaged with each other by means of the engaging groove and the engaging portion.

8. A molding method, characterized in that: include: Providing a green body, wherein the green body is provided with a flow channel; Allowing the flow channel of the green body to extend into the slurry; allowing the slurry to be delivered into the flow channel of the green body at a preset pressure to fill the flow channel of the green body; pre-curing the slurry filling the flow channel of the green body; The excess portion of the green blank is separated from the fixing component and the excess portion of the green blank is removed.

9. The molding method according to claim 8, characterized in that: The provision of green compacts specifically comprises: The green body with the flow channel is generated by using a photo-curing 3D printing technology.

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