Ceramic bolt combined mold core

Abstract

The utility model discloses a ceramic bolt combined type mold core, which comprises a base, a core rod, a cylinder body and an end cover, the base and the end cover are respectively sealed and are detachably arranged at two ends of the cylinder body, the end cover is in sliding fit with the cylinder body, and the core rod is arranged on the base and is positioned in the cylinder body; the core rod is composed of a forming rod and a demolding rod which are arranged from bottom to top, and the forming rod is connected with the base. The combined type mold core is composed of the base, the core rod and the end cover, when core pulling is needed in mold forming, the base and the end cover can be detached from the barrel respectively, then the core rod is ejected and withdrawn from a mold by means of the mold withdrawing rod on the core rod, and compared with bottom core pulling, ejection and withdrawing core pulling is more convenient and faster, and time and labor are saved; in addition, when the combined mold core is used for manufacturing the mold, the combination is simple and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to silicon carbide ceramic bolt production technical field, especially a ceramic bolt combined formula mould core. BACKGROUND

[0002] Bolt, mechanical parts, with nut cylindrical threaded fastener, by head and screw two parts constitute a kind of fastener, need to cooperate with nut, for fastening connection two parts with through hole. Among them, the types of bolts are also many, for example: expansion bolt, horse bolt and silicon carbide ceramic bolt etc. Silicon carbide ceramic bolt is a kind of high-performance fastener, and is widely used in high temperature, high pressure and corrosive environment.

[0003] The production procedure of silicon carbide ceramic bolt is: first, prepare mould, then, form the prepared silicon carbide in mould in the mode of dry pressing, isostatic pressing or grouting, finally, sinter the formed silicon carbide bolt blank to achieve ceramization. The mould is sand mould or plaster mould, in actual processing, the mould is generally poured or filled in mould box, then, core pulling is carried out to obtain mould cavity, because the mould is hardened after forming, especially after using additives in mould material, the mould core is usually closely adhered to the mould, plus because of the shape characteristics of the product, the mould core is relatively slender and very difficult to pull out. UTILITY MODEL CONTENT

[0004] The utility model discloses a ceramic bolt combined formula mould core, to solve the problem that the mould core is usually closely adhered to the mould, plus because of the shape characteristics of the product, the mould core is relatively slender and very difficult to pull out.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A ceramic bolt combined formula mould core, including base, core rod, barrel and end cover, the base and the end cover are respectively sealed and can be detachably installed at the both ends of the barrel, the end cover and the barrel are slidingly matched, and the core rod is installed on the base and located in the barrel.

[0007] The core rod is composed of a forming rod and a stripping rod arranged from bottom to top, and the forming rod is connected with the base.

[0008] Further technical scheme is that the stripping rod is a smooth steel rod, and the caliber of the stripping rod is smaller than that of the forming rod.

[0009] Further technical scheme is that a screw is arranged on the base and is threadedly connected with the forming rod.

[0010] Further technical scheme is that the bottom of the forming rod is provided with a boss.

[0011] Further technical solutions are: the end cover is provided with an escape hole matched with the stripper rod.

[0012] Further technical solutions are: the end cover is provided with an escape hole matched with the stripper rod.

[0013] Compared with the prior art, the utility model discloses at least one of following beneficial effects can be achieved:

[0014] The utility model discloses a ceramic bolt combined mode core, this combined mode core has base, core rod and end cover and is composed, when core pulling is needed when mould forming, can with the base and end cover respectively with the barrel of disengaging, then with the core rod on the stripper rod top retreats the core rod from the mould, compared with the bottom core pulling, top retreat core pulling is more convenient and fast and saves time and labour, in addition, the combined mode core is simple and convenient when making mould. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of a ceramic bolt combined mode core of the utility model.

[0016] Figure 2 It is a structure schematic view of a ceramic bolt combined mode core of the utility model. Figure 1 The core rod structure schematic view of the utility model.

[0017] Figure 3 It is a structure schematic view of a ceramic bolt combined mode core of the utility model. Figure 1 The base structure schematic view of the utility model.

[0018] Figure 4 It is a structure schematic view of a ceramic bolt combined mode core of the utility model. Figure 1 The end cover structure schematic view of the utility model.

[0019] Reference signs: 1, base;2, core rod;3, barrel;4, end cover;5, forming rod;6, stripper rod;7, screw;8, boss;9, escape hole;10, rubber seal ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, the following will combine the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is described clearly and completely, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present 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 present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] 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.

[0024] In the description of this utility model, 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 utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, 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 utility model based on the specific circumstances.

[0026] Example 1:

[0027] This implementation example Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a ceramic bolt-type mold core includes a base 1, a core rod 2, a cylindrical body 3, and end caps 4. The base 1 and end caps 4 are respectively sealed and detachably installed at both ends of the cylindrical body 3. The end caps 4 are slidably fitted with the cylindrical body 3. The core rod 2 is installed on the base 1 and located inside the cylindrical body 3.

[0028] The core rod 2 consists of a forming rod 5 and a demolding rod 6 arranged from bottom to top, with the forming rod 5 connected to the base 1.

[0029] In the case of mold forming, such as plaster molds:

[0030] Install the core rod 2 on the base 1, then install the base 1 at one end of the cylinder 3, with the core rod 2 inside the cylinder 3. Then stand the cylinder 3 upright with the base 1 at the bottom, and pour plaster material. Next, install the end cap 4 at the other end of the cylinder 3, taking care to avoid the ejector rod 6. Apply pressure to the end cap 4 to compact the plaster. After a period of solidification, begin core removal. During core removal, disassemble the base 1 and end cap 4 simultaneously, then fix the cylinder 3. Use the ejector rod 6 on the core rod 2 to push the core rod 2 out of the mold. Compared to bottom core removal, push-out core removal is more convenient, faster, and saves time and effort. In addition, this modular mold core is simple and convenient to assemble when making the mold.

[0031] Preferably, the ejector rod 6 is a smooth steel rod, and the diameter of the ejector rod 6 is smaller than the diameter of the forming rod 5.

[0032] The diameter of the ejector rod 6 is smaller than that of the forming rod 5. This is because it will not affect the mold cavity when pulling the core, and the smaller diameter ejector rod 6 is easier to eject.

[0033] Preferably, the base 1 is provided with screws 7 that are threadedly connected to the forming rod 5.

[0034] The base 1 can be fitted with screws 7, which allows for easy disassembly and replacement of different core rods 2 to process different mold cavities.

[0035] Preferably, the bottom of the forming rod 5 is provided with a boss 8.

[0036] The boss 8 on the forming rod 5 can be used to form the head cavity of the bolt, and it also facilitates the removal of the core rod 2 from the mold.

[0037] Preferably, the end cap 4 is provided with a clearance hole 9 that is adapted to the ejector rod 6.

[0038] The clearance hole 9 is used to avoid the ejection rod 6.

[0039] Preferably, a rubber sealing ring 10 is provided on the outer periphery of the end cap 4.

[0040] When applying pressure to plaster or other mold materials, the rubber sealing ring 10 acts as a seal to prevent leakage, and venting can be achieved through the clearance hole 9.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ceramic bolt assembly mold core, characterized in that: The device includes a base (1), a core rod (2), a cylindrical body (3), and end caps (4). The base (1) and the end caps (4) are respectively sealed and detachably installed at both ends of the cylindrical body (3). The end caps (4) are slidably fitted with the cylindrical body (3). The core rod (2) is installed on the base (1) and located inside the cylindrical body (3). The core rod (2) consists of a forming rod (5) and a demolding rod (6) arranged from bottom to top, and the forming rod (5) is connected to the base (1).

2. The ceramic bolt combination mold core according to claim 1, characterized in that: The ejector rod (6) is a smooth steel rod, and the diameter of the ejector rod (6) is smaller than the diameter of the forming rod (5).

3. The ceramic bolt combination mold core according to claim 1, characterized in that: The base (1) is provided with screws (7) that are threadedly connected to the forming rod (5).

4. The ceramic bolt combination mold core according to claim 1, characterized in that: The bottom of the forming rod (5) is provided with a boss (8).

5. The ceramic bolt combination mold core according to claim 1, characterized in that: The end cap (4) is provided with a clearance hole (9) that is adapted to the ejector rod (6).

6. The ceramic bolt combination mold core according to claim 1, characterized in that: A rubber sealing ring (10) is provided on the outer periphery of the end cap (4).

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