Tree group shell making structure

Abstract

The utility model relates to a tree group shell making structure which comprises a wax mould tree group and a supporting assembly, the supporting assembly comprises a supporting rod and a grip, the supporting rod is provided with a tooth shape, one end of the supporting rod is fixedly connected with the grip, and the other end of the supporting rod penetrates into a preset position of a main trunk of the wax mould tree group. And the connecting rod is fixedly connected with the main trunk. The tooth shape is arranged on the supporting rod, so that the bonding force between the supporting rod and the wax pattern tree set is increased, the tensile capacity of the wax pattern tree set is enhanced, and therefore the situation that the shell making operation is affected due to looseness of the supporting rod is reduced; and the supporting rods penetrate into the main tree trunk of the wax mold tree group, so that the risk of cracking of the shell mold caused by deformation of the supporting rods can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to a tree assembly shell structure. Background Art

[0002] The investment casting process requires wax pressing, and the wax parts are bonded to the die head to form a tree group. The die head is also made of wax. To facilitate the operation, a round rod is added in the middle of the die head to enhance the strength of the die head. After that, the tree group is dipped in slurry and sanded, and the outer surface is covered with fireproof materials. The production is repeated in multiple layers to ensure that the sand shell has sufficient strength before the wax is removed, and finally an empty shell mold with the shape of the product is formed.

[0003] However, when making the shell, the tree group needs to be rotated repeatedly, and the round rod is easy to loosen in the die head, affecting the shell making operation and posing a risk of falling; when making the shell, the tree group needs to be repeatedly dipped in slurry and sprinkled with sand, which makes the weight of the tree group heavier and heavier, causing the round rod to easily deform (bend), thereby causing the sand shell to directly crack or break. Utility Model Content

[0004] Based on this, it is necessary to provide a tree assembly shell structure to address the problem of insufficient support strength of the die head support structure.

[0005] The utility model provides a tree group shell structure, including a wax model tree group and a support assembly, wherein the support assembly includes a support rod and a handle, the support rod is provided with a tooth shape, one end of the support rod is fixedly connected to the handle, and the other end of the support rod penetrates into a preset position of the main trunk of the wax model tree group and is fixedly connected to the main trunk.

[0006] In some of the embodiments, a plurality of anti-slip parts are further provided on the surface of the support rod.

[0007] In some embodiments, the anti-slip member is a circle of polygonal bosses extending outward from the surface of the support rod.

[0008] In some of the embodiments, the polygonal boss is a rectangular boss.

[0009] In some of the embodiments, the number of the polygonal boss is 1, and the polygonal boss is disposed at the bottom of the casting port of the wax model tree set and is wrapped by wax material.

[0010] In some of the embodiments, the tooth profile is a radial thread or an axial tooth profile.

[0011] In some embodiments, the radial thread is an M10 thread.

[0012] In some embodiments, the support rod and the handle are integrally formed.

[0013] In some of the embodiments, a baffle adapted to a casting port of the wax model tree assembly is provided at the connection between the support rod and the handle.

[0014] In some embodiments, the support rod is made of 45 steel.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] 1. By setting teeth on the support rod, the bonding force between the support rod and the wax model tree group is increased and the tensile strength of the wax model tree group is enhanced, thereby reducing the loosening of the support rod and affecting the shell making operation; and the support rod is deeply embedded in the main trunk of the wax model tree group, which can reduce the risk of deformation of the support rod and resulting in cracking of the shell mold.

[0017] 2. Anti-slip parts are provided to further reduce the loosening of the support rod; baffles are provided to play a limiting role so that the support assembly can be quickly positioned to a preset position, thereby improving work efficiency.

[0018] 3. By using No. 45 steel as the material of the support rod, the supporting effect of the support rod is improved, and the risk of shell mold cracking caused by support rod deformation is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a tree assembly shell structure shown in an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of an exploded perspective of a tree assembly shell structure shown in an embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the support assembly shown in an embodiment of the utility model;

[0022] Figure 4 The embodiment of the utility model is shown Figure 1 Schematic cross-sectional view of ;

[0023] Figure 5 This is a schematic structural diagram of a tree assembly shell structure with a wax pattern according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model 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 utility model. However, the utility model 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 utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also 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. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] See also Figures 1 to 3 A tree assembly shell structure according to an embodiment of the utility model includes a wax model tree assembly 1 and a support assembly 2, wherein the support assembly 2 includes a support rod 21 and a handle 22, wherein the support rod 21 is provided with a tooth shape 211, one end of the support rod 21 is fixedly connected to the handle 22, and the other end of the support rod 21 penetrates into a preset position of the main trunk 11 of the wax model tree assembly 1 and is fixedly connected to the main trunk 11.

[0028] In this embodiment, the wax model tree set 1 includes a plurality of trunks, wherein the trunk located in the middle is used as the main trunk 11, so that the support rod 21 is evenly stressed. The tooth shape of the support rod 21 is bonded to the wax material of the main trunk 11, and specifically, the temperature of the support rod 21 can be increased by heating the support rod 21. When the support rod 21 contacts the main trunk 11, the part of the main trunk 11 that contacts the support rod 21 melts, so that the support rod 21 can penetrate into the preset position of the main trunk 11, and at the same time, the melted wax enters the gap of the tooth shape 211. After the support rod 21 cools, the wax solidifies again, so that the support rod 21 is bonded to the main trunk 11. Optionally, a scale is provided on the support rod 21 to mark the preset position of the support rod 21 penetrating into the main trunk 11.

[0029] In this embodiment, a tooth shape 211 is provided on the support rod 21 to increase the bonding force between the support rod 21 and the wax model tree group 1 and enhance the tensile strength of the wax model tree group 1, thereby preventing the support rod 21 from loosening and affecting the shell making operation and ensuring normal shell making operation; and the support rod 21 penetrates deep into the main trunk 11 of the wax model tree group 1, which can reduce the risk of deformation of the support rod 21 and resulting in cracking of the shell mold.

[0030] In some embodiments, Figure 3 and Figure 4As shown, the surface of the support rod 21 is also provided with a plurality of anti-slip parts 212, which can prevent the wax model tree assembly from repeatedly turning over and becoming loose during operation, and further ensure the stability of the wax model tree assembly during shell making operation.

[0031] Optionally, the anti-slip member 212 is a circle of polygonal bosses extending outward from the surface of the support rod 21. The polygonal bosses are rectangular bosses. By setting the anti-slip member as a polygonal boss, the edges and corners in contact with the wax material are increased to improve stability. The right-angled rectangular bosses can more effectively prevent the main trunk 11 and the support rod 21 from sliding.

[0032] Optionally, the number of the polygonal bosses is 1, and the polygonal bosses are arranged at the bottom of the casting port of the wax model tree set 1 and are wrapped by wax. One polygonal boss is used to facilitate the support rod 21 to penetrate the main trunk 11 and ensure that the wax fully wraps the tooth shape 211, and at the same time, the polygonal boss is buried at the bottom of the casting port of the wax model tree set 1 to ensure that the anti-slip part 212 can play a complete anti-slip role.

[0033] In some embodiments, the tooth profile 211 is a radial thread or an axial tooth profile. The radial thread can prevent the support rod 21 from sliding in its axial direction, and the axial tooth profile can prevent the support rod 21 from sliding in its radial direction.

[0034] In some embodiments, the radial thread is an M10 thread. By using the M10 thread, threaded rods on the market can be directly used for processing without having to open a separate mold for processing and forming, thereby reducing processing costs.

[0035] In some embodiments, the support rod 21 and the handle 22 are integrally formed, which can improve the stability between the support rod 21 and the handle 22 and only requires one processing, thereby reducing the processing steps.

[0036] In some embodiments, a baffle 23 adapted to the casting port 12 of the wax model tree set 1 is provided at the connection between the support rod 21 and the handle 22. The surface size of the baffle 23 is larger than the opening size of the casting port, and the baffle 23 can prevent the slurry and sand from leaking into the casting port during shell making and affecting the subsequent high-temperature dewaxing, and can also serve as a reference for the support rod 21 to penetrate into the preset position of the main trunk 11.

[0037] In some embodiments, the support rod 21 is made of 45# steel. The use of high-quality carbon structural steel makes the support rod 21 have higher strength and deformation resistance.

[0038] By way of example and not limitation, Figures 1 to 5As shown, the wax pattern is bonded to the trunk of the group tree to form a wax model tree group 1; the support rod 21 is heated and inserted into the main trunk 11, and the support rod 21 melts the wax material on the main trunk 11 that is in contact with the support rod 11, and the melted wax material penetrates into the tooth shape 211 on the support rod 21, and the excess wax material after melting moves upward to the top of the anti-slip part 212 to completely wrap the anti-slip part 212. When the baffle 23 is blocked by the casting port 12, it means that the support rod 21 has penetrated into the preset position of the main trunk 11; after the wax material is cooled and solidified, the tree group shell structure is obtained.

[0039] 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.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A tree assembly shell structure, characterized in that: It includes a wax model tree group and a support component, wherein the support component includes a support rod and a handle, the support rod is provided with teeth, one end of the support rod is fixedly connected to the handle, and the other end of the support rod penetrates into a preset position of the main trunk of the wax model tree group and is fixedly connected to the main trunk.

2. The tree assembly shell structure according to claim 1, characterized in that: The surface of the support rod is also provided with a plurality of anti-slip parts.

3. The tree assembly shell structure according to claim 2, characterized in that: The anti-slip member is a circle of polygonal bosses extending outward from the surface of the support rod.

4. The tree assembly shell structure according to claim 3, characterized in that: The polygonal boss is a rectangular boss.

5. The tree assembly shell structure according to claim 3, characterized in that: The number of the polygonal bosses is 1, and the polygonal bosses are arranged at the bottom of the casting port of the wax model tree group and are wrapped by wax material.

6. The tree assembly shell structure according to claim 1, characterized in that: The tooth profile is a radial thread or an axial tooth profile.

7. The tree assembly shell structure according to claim 6, characterized in that: The radial thread is an M10 thread.

8. The tree assembly shell structure according to claim 1, characterized in that: The support rod and the handle are integrally formed.

9. The tree assembly shell structure according to claim 1, characterized in that: A baffle plate adapted to the casting port of the wax model tree assembly is provided at the connection between the support rod and the handle.

10. The tree assembly shell structure according to claim 1, characterized in that: The support rod is made of 45# steel.

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