Ring-shaped ceramic core mold

Abstract

This invention provides a ring-shaped ceramic core mold, relating to the field of ceramic core mold design technology. The invention provides a method where one end of a first pull block is fixed to an upper cover plate, and the other end of the first pull block abuts against a lower template assembly. The first pull block, the upper template, and the lower template assembly form a molding cavity communicating with the feed inlet. Ceramic core slurry enters the molding cavity through the feed inlet, forming a ring-shaped ceramic core within the cavity. During mold removal, the upper cover plate is lifted, causing the first pull block to be pulled out from the through hole. After the upper cover plate rises to a certain height, the upper template rises together due to the action of a first elastic element, achieving a staged rise of the first pull block and the upper template. Compared to the traditional method of raising the pull block and the upper template simultaneously, the ceramic core experiences less friction, effectively preventing the ceramic core from being carried out by the upper template due to excessive friction.

Description

Technical Field

[0001] This invention relates to the field of ceramic core mold design technology, and in particular to a ring-shaped ceramic core mold. Background Technology

[0002] Investment casting mainly consists of mold making, wax pattern making, shell pattern making, and subsequent drying, firing, pouring, and solidification processes. The wax pattern is used to form the shape of the casting cavity. To obtain castings with high dimensional accuracy and surface finish, the wax pattern itself must first possess high dimensional accuracy and surface finish. The ceramic core is a crucial part of the wax pattern making process and is one of the key factors determining the quality of the casting. A ceramic core is a type of ceramic core used in investment casting, serving as a transition material to form the cavity of the casting.

[0003] In order to form a ring-shaped ceramic core, traditional ceramic core molds require the installation of a pull block on the upper template. The pull block extends into the molding cavity, and after the ceramic core is formed, a ring shape is formed in the center.

[0004] However, during the molding process, the upper template and the pull block rise together. Since both the upper template and the pull block are in contact with the ceramic core, when they rise together, the upper template and the pull block will simultaneously generate friction on the ceramic core, which can easily cause the ceramic core to be lifted up and damaged. Summary of the Invention

[0005] The purpose of this invention is to provide a ring-shaped ceramic core mold to alleviate the technical problem in the prior art where, during the molding process of traditional ceramic core molds, the upper template and the pull block rise together. Since both the upper template and the pull block are in contact with the ceramic core, when they rise together, the upper template and the pull block will simultaneously generate friction on the ceramic core, which can easily cause the ceramic core to be lifted up and damaged.

[0006] In a first aspect, the annular ceramic core mold provided by the present invention includes: an upper template, a lower template assembly, a first pull block, an upper cover plate, and a first elastic element;

[0007] The upper template is covered on the lower template assembly, and a feed inlet is formed between the upper template and the lower template assembly;

[0008] The upper cover plate is placed on the upper template. The upper template has a through hole. One end of the first pull block is connected to the upper cover plate, and the other end of the first pull block passes through the through hole and is connected to the lower template assembly.

[0009] A molding cavity is formed between the inner wall of the upper template, the bottom edge of the upper template, the side wall of the first pull block, and the top edge of the lower template assembly, and the molding cavity is connected to the feed port;

[0010] One end of the first elastic element is connected to the upper cover plate, and the other end of the first elastic element is connected to the upper template.

[0011] In an optional implementation,

[0012] The lower template component includes a first lower template and a second lower template;

[0013] The second lower template is provided with an upward-facing fixing groove, and the first lower template is provided in the fixing groove. The first lower template is provided with an upward-facing forming groove, which is used to form a ring-shaped ceramic core.

[0014] In an optional implementation,

[0015] The annular ceramic core mold also includes a positioning block;

[0016] The bottom wall of the fixing groove is provided with an upward-facing limiting groove, the positioning block is disposed in the limiting groove, the top of the positioning block is provided with an upward-facing guide groove, and the bottom of the first drawing block is provided with a guide protrusion, the guide protrusion extending into the guide groove.

[0017] In an optional implementation,

[0018] The annular ceramic core mold also includes multiple second extraction blocks;

[0019] The bottom wall of the fixing groove is provided with a plurality of fixing holes, and the second pulling block is provided in each fixing hole;

[0020] The second extraction block has an extraction block protrusion at its end, and the first lower template is provided with a plurality of extraction block holes, which are evenly spaced along the circumferential direction. The extraction block protrusion extends into the molding cavity through the extraction block holes.

[0021] In an optional implementation,

[0022] The annular ceramic core mold also includes a connecting disc;

[0023] The bottom of the second lower template is provided with a downward-facing connecting groove, the connecting plate is disposed in the connecting groove, the connecting plate is connected to the positioning block by a first connecting bolt, and the connecting plate is connected to the second pull block by a second connecting bolt.

[0024] In an optional implementation,

[0025] The annular ceramic core mold also includes an ejector assembly;

[0026] The ejector component is located below the second lower template. One end of the ejector component passes through the second lower template and is connected to the first lower template. The ejector component is configured to drive the first lower template to move upward relative to the second lower template.

[0027] In an optional implementation,

[0028] The ejection assembly includes an ejection connecting rod, an ejection plate, and a driving component;

[0029] The bottom wall of the fixed groove is provided with a through hole, one end of the ejector connecting rod passes through the through hole and is connected to the first lower template, and the other end of the ejector connecting rod is connected to the ejector plate;

[0030] The driving component is connected to the ejector plate, and the driving component is used to drive the ejector plate to move upward, so that the ejector connecting rod drives the first lower template to move upward.

[0031] In an optional implementation,

[0032] The ejection assembly also includes a second elastic element;

[0033] The second elastic element is sleeved on the ejector connecting rod. The end of the ejector connecting rod away from the first lower template is connected to a fixing plate. The fixing plate abuts against the ejector plate. One end of the second elastic element is connected to the second lower template, and the other end of the second elastic element is connected to the fixing plate. The second elastic element is configured to enable the fixing plate to have a tendency to move away from the second lower template.

[0034] In an optional implementation,

[0035] The driving component includes a rotating rod and a rotating block;

[0036] The outer peripheral surface of the rotating rod has a flat surface, and the rotating block has a mounting groove. The flat surface abuts against the groove wall of the mounting groove so that the rotating rod rotates along its own axis and drives the rotating block to rotate.

[0037] The surface of the rotating block has an arc surface, which abuts against the ejector plate so that when the rotating block rotates, it drives the ejector plate to move upward.

[0038] In an optional implementation,

[0039] The driving component also includes a rotating rocker arm;

[0040] The rotating rocker arm is connected to the end face of the rotating rod, and the rotating rocker arm is used to drive the rotating rod to rotate along its own axis.

[0041] The annular ceramic core mold provided by this invention fixes one end of the first pull block to the upper cover plate and the other end of the first pull block abuts against the lower template assembly. The first pull block, the upper template, and the lower template assembly form a molding cavity communicating with the feed port. The ceramic core slurry enters the molding cavity through the feed port and forms an annular ceramic core in the molding cavity. During demolding, the upper cover plate is lifted, which drives the first pull block to be pulled out from the through hole. After the upper cover plate rises to a certain height, the upper template rises together due to the action of the first elastic element, realizing the phased rise of the first pull block and the upper template. Compared with the traditional method of raising the pull block and the upper template at the same time, the ceramic core experiences less friction, effectively avoiding the ceramic core being carried out by the upper template due to excessive friction. This alleviates the technical problem in the prior art where, during the demolding process of traditional ceramic core molds, the upper template and the pull block rise together. Since both the upper template and the pull block are in contact with the ceramic core, when they rise together, the upper template and the pull block will simultaneously generate friction on the ceramic core, which can easily cause the ceramic core to be carried out and damaged. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a cross-sectional view of the overall structure of the annular ceramic core mold provided in an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall structure of the annular ceramic core mold provided in an embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the installation structure of the upper template and the first pull block in the annular ceramic core mold provided in an embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the installation structure of the lower template assembly in the annular ceramic core mold provided in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram of the structure of the second lower template in the annular ceramic core mold provided in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the structure of the second lower template in the annular ceramic core mold provided in an embodiment of the present invention from another perspective;

[0049] Figure 7 This is a schematic diagram of the structure of the first lower template in the annular ceramic core mold provided in an embodiment of the present invention;

[0050] Figure 8 This is a schematic diagram of the driving component in the annular ceramic core mold provided in an embodiment of the present invention;

[0051] Figure 9 This is a schematic diagram of the ejection assembly in the annular ceramic core mold provided in an embodiment of the present invention;

[0052] Figure 10 This is a schematic diagram of the positioning block in the annular ceramic core mold provided in an embodiment of the present invention;

[0053] Figure 11 This is a schematic diagram of the structure of the second extraction block in the annular ceramic core mold provided in an embodiment of the present invention;

[0054] Figure 12 This is a schematic diagram of the structure of the annular ceramic core in the annular ceramic core mold provided in an embodiment of the present invention;

[0055] Figure 13 This is a schematic diagram of the upper template in the annular ceramic core mold provided in an embodiment of the present invention.

[0056] Icons: 10-Ring ceramic core; 20-Feed inlet; 100-Upper template; 110-Through hole; 120-Guide post; 200-Lower template assembly; 210-First lower template; 211-Forming groove; 212-Pulling hole; 220-Second lower template; 221-Fixing groove; 222-Limiting groove; 223-Fixing hole; 224-Connecting groove; 225-Passing hole; 300-First pulling block; 310-Guide protrusion; 400-Upper cover plate; 500-First spring Component; 510-Second elastic component; 600-Positioning block; 610-Guide groove; 700-Second pull block; 710-Pull block protrusion; 800-Connecting disc; 810-First connecting bolt; 820-Second connecting bolt; 900-Ejection assembly; 910-Ejection connecting rod; 920-Ejection plate; 930-Drive component; 940-Fixing plate; 950-Rotating rod; 951-Flat surface; 960-Rotating block; 961-Arc surface; 970-Rotating rocker arm. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0064] During the process of removing the ceramic core from the mold, the upper template 100 and the pull block rise together. Since both the upper template 100 and the pull block are in contact with the ceramic core, when they rise together, the upper template 100 and the pull block will simultaneously generate friction on the ceramic core, which can easily cause the ceramic core to be lifted up and damaged.

[0065] In view of this, such as Figure 1 , Figure 2 , Figure 12 As shown, the annular ceramic core mold provided in this embodiment includes: an upper template 100, a lower template assembly 200, a first drawer block 300, an upper cover plate 400, and a first elastic element 500; the upper template 100 covers the lower template assembly 200, and a feed inlet 20 is formed between the upper template 100 and the lower template assembly 200; the upper cover plate 400 covers the upper template 100, the upper template 100 has a through hole 110, one end of the first drawer block 300 is connected to the upper cover plate 400, and the other end of the first drawer block 300 passes through the through hole 110 and is connected to the lower template assembly 200; a molding cavity is formed between the inner wall of the upper template 100, the bottom edge of the upper template 100, the side wall of the first drawer block 300, and the top edge of the lower template assembly 200, and the molding cavity communicates with the feed inlet 20; one end of the first elastic element 500 is connected to the upper cover plate 400, and the other end of the first elastic element 500 is connected to the upper template 100.

[0066] The annular ceramic core mold provided in this embodiment fixes one end of the first pull block 300 to the upper cover plate 400, and the other end of the first pull block 300 abuts against the lower template assembly 200. The first pull block 300, the upper template 100, and the lower template assembly 200 form a molding cavity communicating with the feed port 20. The ceramic core slurry enters the molding cavity through the feed port 20, forming an annular ceramic core 10 in the molding cavity. When removing the mold, the upper cover plate 400 is lifted, causing the first pull block 300 to be pulled out from the through hole 110. After the upper cover plate 400 rises to a certain height, the action of the first elastic element 500 drives the upper mold. The plate 100 rises together, realizing the phased rise of the first drawing block 300 and the upper template 100. Compared with the traditional method of raising the drawing block and the upper template 100 at the same time, the ceramic core experiences less friction, effectively avoiding the ceramic core being carried out by the upper template 100 due to excessive friction. This alleviates the technical problem in the existing technology where, during the demolding process of traditional ceramic core molds, the upper template 100 and the drawing block rise together. Since both the upper template 100 and the drawing block are in contact with the ceramic core, when they rise together, the upper template 100 and the drawing block will simultaneously generate friction on the ceramic core, which can easily cause the ceramic core to be carried out and damaged.

[0067] Regarding the structure and shape of the upper template 100, specifically:

[0068] like Figure 3 , 13As shown, the upper template 100 is located between the upper cover plate 400 and the lower template assembly 200. A through hole 110 is opened in the middle of the upper template 100 for the passage of the first pull block 300. The bottom of the upper template 100 has a semi-circular groove, and the top of the lower template assembly 200 also has a semi-circular groove. The two semi-circular grooves are engaged to form the feed port 20.

[0069] In order to fix the first elastic element 500, a spring groove is provided on the top of the upper template 100, and a spring groove is also provided on the bottom of the upper cover plate 400. The two spring grooves form a cavity to accommodate the first elastic element 500, and the first elastic element 500 is installed in the cavity.

[0070] In addition, in order to ensure that the upper cover plate 400 can move in the vertical direction, a guide post 120 is installed on the top of the upper template 100. A through hole is provided on the upper cover plate 400, and the guide post 120 extends into the through hole. Due to the restriction of the guide post 120, the upper cover plate 400 can only move along the axial direction of the guide post 120.

[0071] It should be noted that the bottom of the upper template 100 has multiple pull-out slots, and the pull-out protrusion 710 at the end of the second pull-out block 700 can extend into the pull-out slot to achieve positioning between the upper template 100 and the second pull-out block 700.

[0072] Regarding the structure and shape of the lower template component 200, specifically:

[0073] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the lower template assembly 200 includes a first lower template 210 and a second lower template 220. The diameter of the second lower template 220 is larger than that of the first lower template 210. A fixing groove 221 is formed on the top of the second lower template 220. The first lower template 210 is placed in the fixing groove 221. A forming groove 211 is formed on the top of the first lower template 210. A forming cavity is formed between the groove wall of the forming groove 211, the bottom wall of the upper template 100 assembly, the hole wall of the through hole 110, and the outer wall of the first pull block 300. The ceramic core slurry entering from the feed port 20 is formed in the forming cavity to form an annular ceramic core 10.

[0074] The first template 210 has multiple extraction holes 212, and the number of extraction holes 212 corresponds one-to-one with the number of extraction blocks 700, such as... Figure 11As shown, the top of the second pull block 700 has a pull block protrusion 710. The pull block protrusion 710 extends into the molding cavity through the insertion block hole, so that the molded annular ceramic core 10 has multiple molding holes with the same shape as the insertion block protrusion. In order to fix the second pull block 700, multiple fixing holes 223 are provided on the second lower template 220. The second pull block 700 is located in the fixing holes 223, so that the second pull block 700 can only move in the vertical direction.

[0075] In order to fix the positioning block 600, an upward-facing limiting groove 222 is opened on the top of the second lower template 220. The limiting groove 222 is located at the bottom of the groove wall of the fixing groove 221. The diameter of the limiting groove 222 is smaller than the diameter of the fixing groove 221. The bottom of the positioning block 600 extends into the limiting groove 222 to restrict the position of the positioning block 600.

[0076] The bottom of the second lower template 220 has a downward-facing connecting groove 224. The connecting plate 800 is disposed in the connecting groove 224. The connecting plate 800 is connected to the positioning block 600 by the first connecting bolt 810. The connecting plate 800 is connected to the second pull block 700 by the multiple second connecting bolts 820. The connecting plate 800 is used to fix the second pull block 700 and the positioning block 600 on the second lower template 220.

[0077] Regarding the structure and shape of the first draw block 300, specifically:

[0078] The first draw block 300 has a cylindrical structure. The bottom of the first draw block 300 has a conical guide protrusion 310 with an inclined surface. The top of the positioning block 600 has a guide groove 610 with an inclined groove wall, so that the guide protrusion 310 can be guided into the guide groove 610.

[0079] Furthermore, it should be noted that the diameter of the outer surface of the first pull block 300 below the middle is smaller than that above the middle, so that there is a gap between the first pull block 300 and the upper template 100. This gap is used for the molding of the annular ceramic core 10, so that the annular ceramic core 10 can be molded into annular protrusions.

[0080] Regarding the structure and shape of positioning block 600, specifically:

[0081] like Figure 10 As shown, the top of the positioning block 600 is provided with an upward-facing guide groove 610, and the outer edge of the top of the positioning block 600 has a bevel. There is a gap between the bevel and the upper template 100 for forming the annular ceramic core 10.

[0082] Regarding the structure and shape of the connecting plate 800, specifically:

[0083] The connecting plate 800 has a disc-shaped structure. A first through hole is provided at the center of the connecting plate 800. A first connecting bolt 810 passes through the first through hole and extends into the positioning block 600. The connecting plate 800 is provided with multiple second through holes. The number of second through holes is the same as the number of second draw blocks 700. A second connecting bolt 820 passes through the second through hole and extends into the second draw block 700.

[0084] Regarding the structure and shape of the ejector component 900, specifically:

[0085] like Figure 8 , Figure 9 As shown, the ejector assembly 900 is located below the connecting plate 800. The ejector assembly 900 includes an ejector connecting rod 910, an ejector plate 920, and a driving component 930. The second lower template 220 is provided with a through hole 225. One end of the ejector connecting rod 910 passes through the through hole 225, and the other end of the ejector connecting rod 910 is connected to the fixing plate 940. That is, the ejector connecting rod 910 is used to connect the fixing plate 940 and the first lower template 210. Specifically, the end of the ejector connecting rod 910 near the first lower template 210 has a threaded hole. A bolt passes through the first lower template 210 and is threaded into the threaded hole, which can fix the ejector connecting rod 910 to the first lower template 210.

[0086] The driving component 930 includes a rotating rod 950, a rotating block 960, and a rotating rocker arm 970. An ejector plate 920 is provided below the fixed plate 940, and the ejector plate 920 abuts against the fixed plate 940. The rotating block 960 abuts against the lower part of the ejector plate 920. The rotating rod 950 is connected to the rotating block 960, and the end face of the rotating rod 950 is connected to the rotating rocker arm 970. By rotating the rocker arm 970, the rotating rod 950 is driven to rotate, which in turn drives the rotating block 960 to rotate. Since the rotating block 960 has an arc surface 961, and the arc surface 961 always abuts against the ejector plate 920, when the rotating block 960 rotates, it can drive the ejector plate 920 to move upward.

[0087] In order to make the rotation of the rotating rod 950 drive the rotating block to rotate, specifically, the rotating rod 950 is provided with a flat surface 951 in the circumferential direction. The flat surface 951 is symmetrically provided with two sides. When the molding is static, the groove wall of the mounting groove on the rotating block 960 abuts against the flat surface 951. When it is necessary to eject the first lower template 210 and the annular ceramic core 10, the rotating rod 950 rotates, and the flat surface 951 rotates, which can drive the rotating block 960 to rotate.

[0088] To fix the rotating rod 950, a side plate is installed below the second lower template 220. The side plate has holes, through which the rotating rod 950 passes, and the rotating rod 950 is supported and fixed by the holes.

[0089] In addition, in order to enable the ejector connecting rod 910 to automatically reset, a second elastic element 510 is sleeved on the outer surface of the ejector connecting rod 910. One end of the second elastic element 510 is connected to the fixed plate 940, and the other end of the second elastic element 510 is connected to the second lower template 220. Both the second elastic element 510 and the first elastic element 500 are compression springs. After the rocker arm 970 is released and rotated, the elastic force of the second elastic element 510 causes the fixed plate 940 to move away from the second lower template 220, thereby achieving reset.

[0090] The annular ceramic core mold provided in this embodiment is placed directly on the pressing machine and automatically locked in place by the pressing machine, saving time and manpower. The contact part between the feed inlet 20 and the ceramic core is duckbill-shaped, making it easier to remove residual solidified slurry inside the feed inlet 20. The upper cover plate 400 is connected to the first pull block 300 by bolts, and the upper cover plate 400 is connected to the upper template 100 by the first elastic element 500. When removing the mold, the upper cover plate 400 is connected to the pressing machine, which can realize mechanical mold removal, greatly improving efficiency. At the same time, due to the presence of the guide post 120, damage such as scratches to the surface of the ceramic core can be avoided during the mold removal process, improving the surface quality and yield of the ceramic core, thereby improving the production efficiency of the enterprise.

[0091] When removing the mold, the upper cover plate 400 first drives the first pull block 300, and the two rise together. After rising to a certain height, the first elastic element 500 drives the upper template 100 to rise together, thus avoiding the ceramic core being pulled out by the upper template 100 due to excessive friction. The guide protrusion 310 at the bottom of the first pull block 300 has a conical end, which cooperates with the guide groove 610, making placement more convenient and accurate.

[0092] By turning the rocker arm 970, the ejector plate 920 moves upward, ejecting the first lower template 210 and the annular ceramic core 10 together. The second pull block 700 is fixed on the first lower template 210, and the two remain stationary, thereby achieving automatic mold removal. The ejector connecting rod 910 is fitted with a second elastic element 510, which can achieve automatic reset. The second pull block 700 is provided with a pull block protrusion 710 at the contact surface with the upper template 100, so that the upper mold is installed more accurately.

[0093] The contact surfaces of each component are called mating surfaces. The mating surfaces are not absolutely "seamless," meaning there is a slight distance between the two contacting surfaces. This distance is called the mating dimension. If the mating dimension is too large, the fit is too loose, which will cause liquid slurry to seep into the gaps and cause "material leakage." If the mating dimension is too small, it will make it difficult for the movable blocks and pull blocks to move. Only when the mating dimension is within a reasonable range can the normal use of the mold be guaranteed. Therefore, the gap between the first pull block 300 and the wall of the through hole 110 is 0.02-0.04mm, the gap between the guide protrusion 310 and the groove wall of the guide groove 610 is 0.1-0.15mm, the gap between the second pull block 700 and the wall of the pull block hole 212 is 0.02-0.04mm, and the gap between the ejector connecting rod 910 and the wall of the through hole 225 is 0.02-0.04mm.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ring-shaped ceramic core mold, characterized in that, include: Upper template (100), lower template assembly (200), first draw block (300), upper cover plate (400) and first elastic element (500); The upper template (100) covers the lower template assembly (200), and a feed inlet (20) is formed between the upper template (100) and the lower template assembly (200). The upper cover plate (400) covers the upper template (100), the upper template (100) has a through hole (110), one end of the first pull block (300) is connected to the upper cover plate (400), and the other end of the first pull block (300) passes through the through hole (110) and is connected to the lower template assembly (200). A molding cavity is formed between the inner wall of the upper template (100), the bottom edge of the upper template (100), the side wall of the first pull block (300), and the top edge of the lower template assembly (200), and the molding cavity is connected to the feed port (20). One end of the first elastic element (500) is connected to the upper cover plate (400), and the other end of the first elastic element (500) is connected to the upper template (100); The lower template component (200) includes a first lower template (210) and a second lower template (220); The second lower template (220) is provided with an upward-facing fixing groove (221), and the first lower template (210) is provided in the fixing groove (221). The first lower template (210) is provided with an upward-facing forming groove (211), and the forming groove (211) is used to form the annular ceramic core (10). The annular ceramic core (10) mold also includes a positioning block (600). The bottom wall of the fixing groove (221) is provided with an upward-facing limiting groove (222), the positioning block (600) is disposed in the limiting groove (222), the top of the positioning block (600) is provided with an upward-facing guide groove (610), the bottom of the first pull block (300) is provided with a guide protrusion (310), and the guide protrusion (310) extends into the guide groove (610); The annular ceramic core (10) mold also includes an ejector assembly (900). The ejector component (900) is located below the second lower template (220). One end of the ejector component (900) passes through the second lower template (220) and is connected to the first lower template (210). The ejector component (900) is configured to drive the first lower template (210) to move upward relative to the second lower template (220).

2. The annular ceramic core mold according to claim 1, characterized in that, The annular ceramic core (10) mold also includes multiple second draw blocks (700). The bottom wall of the fixing groove (221) is provided with a plurality of fixing holes (223), and each fixing hole (223) is provided with the second pull block (700). The end of the second drawing block (700) has a drawing block protrusion (710), and the first lower template (210) is provided with a plurality of drawing block holes (212). The plurality of drawing block holes (212) are evenly spaced along the circumferential direction, and the drawing block protrusion (710) extends into the molding cavity through the drawing block hole (212).

3. The annular ceramic core mold according to claim 2, characterized in that, The annular ceramic core (10) mold also includes a connecting plate (800). The bottom of the second lower template (220) is provided with a downward-facing connecting groove (224), and the connecting plate (800) is disposed in the connecting groove (224). The connecting plate (800) is connected to the positioning block (600) by the first connecting bolt (810), and the connecting plate (800) is connected to the second pull block (700) by the second connecting bolt (820).

4. The annular ceramic core mold according to claim 1, characterized in that, The ejection assembly (900) includes an ejection connecting rod (910), an ejection plate (920), and a drive component (930). The bottom wall of the fixed groove (221) is provided with a through hole (225). One end of the ejector connecting rod (910) passes through the through hole (225) and is connected to the first lower template (210). The other end of the ejector connecting rod (910) is connected to the ejector plate (920). The driving component (930) is connected to the ejector plate (920). The driving component (930) is used to drive the ejector plate (920) to move upward, so that the ejector connecting rod (910) drives the first lower template (210) to move upward.

5. The annular ceramic core mold according to claim 4, characterized in that, The ejection assembly (900) also includes a second elastic element (510); The second elastic element (510) is sleeved on the ejector connecting rod (910). The end of the ejector connecting rod (910) away from the first lower template (210) is connected to a fixing plate (940). The fixing plate (940) abuts against the ejector plate (920). One end of the second elastic element (510) is connected to the second lower template (220), and the other end of the second elastic element (510) is connected to the fixing plate (940). The second elastic element (510) is configured to enable the fixing plate (940) to have a tendency to move away from the second lower template (220).

6. The annular ceramic core mold according to claim 5, characterized in that, The driving component (930) includes a rotating rod (950) and a rotating block (960). The outer peripheral surface of the rotating rod (950) has a flat surface (951), and the rotating block (960) has a mounting groove. The flat surface (951) abuts against the groove wall of the mounting groove so that the rotating rod (950) drives the rotating block (960) to rotate when it rotates along its own axis. The surface of the rotating block (960) has an arc surface (961), which abuts against the ejector plate (920) so that when the rotating block (960) rotates, it drives the ejector plate (920) to move upward.

7. The annular ceramic core mold according to claim 6, characterized in that, The drive component (930) also includes a rotating rocker arm (970). The rotating rocker arm (970) is connected to the end face of the rotating rod (950), and the rotating rocker arm (970) is used to drive the rotating rod (950) to rotate along its own axis.

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