Test bar module rack, test bar module and assembly method of test bar module

Abstract

The present application discloses a test bar module rack, a test bar module and an assembly method of the test bar module. Among them, the test bar module rack includes a first flow splitter plate, a second flow splitter plate and a middle column tube. The first flow splitter plate is provided with a plurality of first mounting portions for mounting test bar wax patterns, and the plurality of first mounting portions are arranged at intervals along the circumferential direction of the first flow splitter plate; the second flow splitter plate is disposed opposite to the first flow splitter plate in the axial direction of the first flow splitter plate, and the second flow splitter plate is provided with second mounting portions corresponding to the positions of the first mounting portions; the middle injection tube is disposed on at least one of the first flow splitter plate and the second flow splitter plate to connect the first flow splitter plate and the second flow splitter plate. According to the test bar module rack of the present application, through different combinations of the first flow splitter plate, the second flow splitter plate and the middle column tube, and in cooperation with different test bar wax patterns, different test bar modules can be assembled to manufacture different test bars, improving the versatility of the test bar module rack, facilitating the reduction of production costs and the improvement of production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of investment casting, and more specifically, to a test bar module rack, a test bar module including the test bar module rack, and an assembly method of the test bar module. Background Art

[0002] During the production process of castings, it is generally necessary to pour mechanical property test bars to detect whether the mechanical properties of the poured castings meet the requirements. The poured test bars are processed into mechanical property specimens, and the mechanical properties (such as tensile strength, yield strength, elongation, etc.) are detected through tensile tests, etc.

[0003] During the process of casting test bars, first, it is necessary to use a wax mold tooling to press wax mold test bars and a wax mold support for fixing these wax mold test bars, and then assemble a plurality of wax mold test bars and the wax mold support to improve the casting efficiency. Then, the metal test bars are cast by shell casting.

[0004] There are many types of cast high-temperature alloy equiaxed crystal test bars, including tensile test bars, creep test bars, impact test bars, creep test bars, fatigue test bars, etc. In the prior art, for different test bars, different wax mold supports are usually designed. Correspondingly, different wax mold toolings need to be designed for different wax mold supports, resulting in high production costs and low production efficiency of the test bars. Summary of the Invention

[0005] Aiming at the problems proposed in the background art, an object of the present application is to provide a new technical solution for a test bar module rack, which can at least solve the problems of high production costs and low production efficiency of test bars in the prior art.

[0006] Another object of the present application is to provide a test bar module including the above test bar module rack.

[0007] Still another object of the present application is to provide an assembly method of the above test bar module.

[0008] On the one hand, the present application provides a test bar module rack, including: a first runner plate, the first runner plate is provided with a plurality of first mounting parts for mounting test bar wax molds, and the plurality of first mounting parts are arranged at intervals along the circumferential direction of the first runner plate; a second runner plate, the second runner plate is oppositely arranged with the first runner plate in the axial direction of the first runner plate, and the second runner plate is provided with second mounting parts corresponding to the positions of the first mounting parts; a central sprue, the central sprue is arranged on at least one of the first runner plate and the second runner plate to connect the first runner plate and the second runner plate.

[0009] Optionally, the first flow splitter plate includes: a first plate body, which is a circular sheet-like structure and has a hollow portion extending along the axial direction of the first plate body; a plurality of first mounting portions are evenly distributed at intervals along the circumferential direction of the first plate body, and each first mounting portion is a mounting hole extending along the axial direction of the first plate body; a first bracket, which is disposed at the center of the first plate body and extends along the axial direction of the first plate body.

[0010] Optionally, the first bracket is cylindrical, the first bracket is coaxially arranged with the first plate body, and the outer wall surface of the first bracket constitutes a part of the side wall of the hollow portion.

[0011] Optionally, the middle runner is disposed on one side of the first plate body close to the second flow splitter plate, the first end of the middle runner is connected to the first plate body, and the second end of the middle runner is connected to the second flow splitter plate.

[0012] Optionally, the middle runner and the first plate body are integrally formed wax molds.

[0013] Optionally, the second end of the middle runner is provided with a first connecting portion, and the second flow splitter plate is provided with a second connecting portion on one side close to the first flow splitter plate, and the first connecting portion is connected to the second connecting portion.

[0014] Optionally, the first connecting portion is a cross spline, and the second connecting portion is a cross keyway.

[0015] Optionally, a baffle is provided on one side of the second flow splitter plate close to the first flow splitter plate and is arranged around the cross keyway.

[0016] On the other hand, the present application provides a test bar module, which includes the above-mentioned test bar module frame, and further includes: a pouring cup, which is arranged on the side of the first flow splitter plate away from the second flow splitter plate; a threaded rod, which is arranged on the first flow splitter plate and is located in the pouring cup; a test bar wax mold, one end of which is connected to the first mounting portion.

[0017] On the other hand, the present application provides an assembly method for the above-mentioned test bar module, including the following steps:

[0018] S1: Place the threaded rod into the tooling for pressing the first flow splitter plate, and press the first flow splitter plate with the threaded rod.

[0019] S2: Press the test bar wax mold.

[0020] S3: If the middle runner is integrally formed on the first flow splitter plate, cut off the middle runner.

[0021] S4: Connect one end of the test bar wax pattern to the first mounting portion, and seal the connection gap with molten bonding wax.

[0022] Preferably, the other end of the test bar wax pattern is connected to the second mounting portion.

[0023] For the test bar module of the above preferred solution, the present application provides an assembly method for the test bar module of the above preferred solution, including the following steps:

[0024] S1: Place the threaded rod into the tooling for pressing the first runner plate, and press the first runner plate with the threaded rod.

[0025] S2: Press the test bar wax pattern and the second runner plate.

[0026] S3: Connect the first runner plate and the second runner plate through the middle runner tube, and pour molten bonding wax into the connection gap.

[0027] S4: Connect the sprue cup to the first runner plate, and pour molten bonding wax into the connection gap.

[0028] S5: Connect the two ends of the test bar wax pattern to the first mounting portion and the second mounting portion respectively, and seal the connection gap with molten bonding wax.

[0029] Preferably, the middle runner tube includes a body rod and an extension rod detachably connected to the body rod.

[0030] For the test bar module of the above preferred solution, the present application provides an assembly method for the test bar module of the above preferred solution, including the following steps:

[0031] S1: Place the threaded rod into the tooling for pressing the first runner plate, and press the first runner plate with the threaded rod.

[0032] S2: Press the test bar wax pattern, the second runner plate and the extension rod.

[0033] S3: Connect the body rod and the extension rod to form the middle runner tube, and pour molten bonding wax into the connection gap.

[0034] S4: Connect the first runner plate and the second runner plate through the middle runner tube, and pour molten bonding wax into the connection gap.

[0035] S5: Connect the sprue cup to the first runner plate, and pour molten bonding wax into the connection gap.

[0036] S6: Connect the two ends of the test bar wax pattern to the first mounting portion and the second mounting portion respectively, and seal the connection gap with molten bonding wax.

[0037] The proposed test bar module rack, test bar module and assembly method of the test bar module of the present invention have the following beneficial effects:

[0038] According to the test bar module rack of the present application, through different combinations of the first flow dividing plate, the second flow dividing plate and the middle column tube, and in cooperation with different test bar wax molds, different test bar modules can be assembled to manufacture different test bars. Compared with the prior art where different mounting brackets need to be set for each test bar and different toolings are required to manufacture different mounting brackets, the present application only needs to design fewer toolings for the production and manufacture of the first flow dividing plate, the second flow dividing plate and the middle column tube, and can realize the assembly of all test bar wax molds, improving the versatility of the test bar module rack and being beneficial to reducing production costs. Moreover, the test bar module rack of the present application has a simple structure and is easy to assemble, which is beneficial to improving production efficiency.

[0039] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0041] Figure 1 is a perspective view of a test bar module rack prefabricated with threaded rods and a sprue cup according to an embodiment of the present application;

[0042] Figure 2 is a front view of a test bar module rack prefabricated with threaded rods and a sprue cup according to an embodiment of the present application;

[0043] Figure 3 is an exploded view of a test bar module rack according to an embodiment of the present application;

[0044] Figure 4 is a perspective view of the first flow dividing plate and the middle pouring tube according to an embodiment of the present application;

[0045] Figure 5 is a bottom view of the first flow dividing plate and the middle pouring tube according to an embodiment of the present application;

[0046] Figure 6 is a perspective view of the second flow dividing plate according to an embodiment of the present application;

[0047] Figure 7 is a front view of the second flow dividing plate according to an embodiment of the present application;

[0048] Figure 8 is a top view of the second flow dividing plate according to an embodiment of the present application;

[0049] Figure 9 It is the bottom view of the second flow splitter according to the embodiment of the present application;

[0050] Figure 10 It is the three-dimensional view of the test bar module provided with the impact test bar wax mold according to the embodiment of the present application;

[0051] Figure 11 It is the three-dimensional view of the impact test bar wax mold according to the embodiment of the present application;

[0052] Figure 12 It is the three-dimensional view of the test bar module provided with the radish test bar wax mold according to the embodiment of the present application;

[0053] Figure 13 It is the three-dimensional view of the radish test bar wax mold according to the embodiment of the present application;

[0054] Figure 14 It is the three-dimensional view of the test bar module provided with the tensile test bar wax mold according to the embodiment of the present application;

[0055] Figure 15 It is the front view of the test bar module provided with the tensile test bar wax mold according to the embodiment of the present application;

[0056] Figure 16 It is the three-dimensional view of another test bar module rack prefabricated with a threaded rod and a sprue cup according to the embodiment of the present application;

[0057] Figure 17 It is the exploded view of another test bar module rack according to the embodiment of the present application;

[0058] Figure 18 It is the three-dimensional view of the extension rod according to the embodiment of the present application;

[0059] Figure 19 It is the three-dimensional view of the test bar module provided with the creep test bar wax mold according to the embodiment of the present application;

[0060] Figure 20 It is the three-dimensional view of the test bar module provided with 24 test bar wax molds according to the embodiment of the present application;

[0061] Figure 21 It is the three-dimensional view of the test bar module provided with 28 test bar wax molds according to the embodiment of the present application.

[0062] Reference numerals

[0063] Test bar module 100;

[0064] Test bar module rack 10; First flow splitter 11; First mounting part 111; First disk body 112; First ring part 112a; First extension part 112b; Hollow part 112c; First bracket 113; Second flow splitter 12; Second disk body 121; Second ring part 121a; Second extension part 121b; Buffer socket 121c; Second mounting part 122; Second connecting part 123; Baffle 124; Middle pouring tube 13; First connecting part 131; Body rod 132; Extension rod 133;

[0065] Pouring cup 20;

[0066] Threaded rod 30;

[0067] Test bar wax mold 40. Detailed implementation manners

[0068] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0069] Now, various exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present application.

[0070] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present application, its application or use.

[0071] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0072] In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0073] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0074] First, the test bar module rack 10 according to the embodiments of the present application will be specifically described below in conjunction with the accompanying drawings.

[0075] As Figures 1 to 21As shown in the figure, the test bar module rack 10 according to an embodiment of the present application includes: a first runner plate 11, a second runner plate 12, and a sprue 13.

[0076] Specifically, the first runner plate 11 is provided with a plurality of first mounting portions 111 for mounting the test bar wax patterns 40, and the plurality of first mounting portions 111 are arranged at intervals along the circumferential direction of the first runner plate 11. The second runner plate 12 is disposed opposite to the first runner plate 11 in the axial direction of the first runner plate 11, and the second runner plate 12 is provided with second mounting portions 122 corresponding to the positions of the first mounting portions 111. The sprue 13 is disposed on at least one of the first runner plate 11 and the second runner plate 12 to connect the first runner plate 11 and the second runner plate 12.

[0077] In other words, the test bar module rack 10 according to an embodiment of the present application is mainly composed of a first runner plate 11 for mounting the test bar wax patterns 40, a second runner plate 12 disposed opposite to the first runner plate 11, and a sprue 13 connecting the first runner plate 11 and the second runner plate 12. Among them, the first runner plate 11, the second runner plate 12, and the sprue 13 can all be wax patterns pressed by tooling to form a runner in the subsequent casting process.

[0078] It should be noted that the test bar module rack 10 can fix the test bar wax patterns 40. Among them, the test bar wax patterns 40 are used to form metal wax patterns in the subsequent shell mold casting, and the test bar module rack 10 is used to form a runner for the metal liquid to flow through.

[0079] Among them, the first runner plate 11 can have a disk body, and the disk body can be a circular structure, an oval structure, a square structure, etc., and these disk bodies all have an axial direction and a circumferential direction.

[0080] The first runner plate 11 has a plurality of first mounting portions 111 arranged at intervals along the circumferential direction of the first runner plate 11 for mounting the test bar wax patterns 40. That is to say, a plurality of first mounting portions 111 are provided on the peripheral part of the disk body of the first runner plate 11, and the test bar wax patterns 40 can be mounted into the first mounting portions 111.

[0081] If the disk body is a circular structure, the first mounting portions 111 are arranged at intervals along the circumferential part of the circular structure; if the disk body is an oval structure, the first mounting portions 111 are arranged at intervals along the oval peripheral part of the oval structure; if the disk body is a square structure, the first mounting portions 111 are arranged at intervals along the four edge parts of the square structure.

[0082] Preferably, the first mounting portions 111 are evenly spaced along the circumferential direction of the first runner plate 11, and the distance between adjacent first mounting portions 111 is equal, which is beneficial for the metal liquid to be uniformly injected along the runner to form the test bar wax patterns 40 during the subsequent shell mold casting, and improves the yield rate of the cast test bars.

[0083] The first installation part 111 can be an installation hole, and the end of the test bar wax pattern 40 can be directly inserted into the installation hole. The structure of this first installation part 111 is simple and easy to manufacture, and conventional test bar wax patterns 40 can be directly used without modifying the wax pattern tooling for manufacturing the test bar wax patterns 40. The first installation part 111 can also be an installation convex part, and the corresponding end of the test bar wax pattern 40 can be provided with an installation groove for inserting the installation convex part. The structure of this first installation part 111 is simple and can also achieve the installation of the test bar wax pattern 40, but the existing wax pattern tooling needs to be modified to produce the corresponding test bar wax pattern 40, resulting in a relatively high production cost.

[0084] Axially, the second shunt plate 12 and the first shunt plate 11 are arranged opposite to each other, that is, the orthographic projection of the second shunt plate 12 on the plane where one side plate surface of the first shunt plate 11 is located along the axis of the first shunt plate 11 has an overlapping part with this plate surface.

[0085] The second shunt plate 12 can also have a plate body, and the plate body of the second shunt plate 12 can be arranged opposite to the plate body of the first shunt plate 11 along the axis of the plate body of the first shunt plate 11.

[0086] The second shunt plate 12 is provided with a second installation part 122 corresponding to the position of the first installation part 111, that is, the second shunt plate 12 is provided with a second installation part 122, and the position of the second installation part 122 corresponds to the position of the first installation part 111. Specifically, the orthographic projection of the first installation part 111 on the plane where one side plate surface of the first shunt plate 11 is located along the axis of the first shunt plate 11 falls into the above overlapping part. Further, the second installation part 122 can be arranged in one-to-one correspondence with the first installation part 111 to facilitate the installation of the test bar wax pattern 40.

[0087] Preferably, the axis of the second shunt plate 12 and the axis of the first shunt plate 11 can be parallel to each other, and the opposite side surfaces of the first shunt plate 11 and the second shunt plate 12 can be parallel to each other, so that the distance between the first installation part 111 and the second installation part 122 is equal to match the test bar wax patterns 40 of the same specification.

[0088] Similarly, the second installation part 122 can be an installation hole, and the other end of the test bar wax pattern 40 can be directly inserted into the second installation part 122. The structure of this second installation part 122 is simple and easy to manufacture, and conventional test bar wax patterns 40 can be directly used without modifying the wax pattern tooling for manufacturing the test bar wax patterns 40. The second installation part 122 can also be an installation convex part, and the corresponding end of the test bar wax pattern 40 can be provided with an installation groove for inserting the installation convex part. The structure of this first installation part 111 is simple and can also achieve the installation of the test bar wax pattern 40, but the existing wax pattern tooling needs to be modified to produce the corresponding test bar wax pattern 40, resulting in a relatively high production cost.

[0089] When the second mounting portion 122 is a mounting hole, the mounting hole can be a through hole or a blind hole. If it is a through hole, the test bar wax pattern 40 can be installed into the first mounting portion 111 through the through hole after the test bar wax pattern 40 rack is assembled; if it is a blind hole, one end of the test bar wax pattern 40 needs to be installed into the first mounting portion 111 first, and then the other end of the test bar wax pattern 40 is installed into the second mounting portion 122.

[0090] The ingate 13 is provided on at least one of the first runner plate 11 and the second runner plate 12, and specifically includes the following situations:

[0091] Situation 1: As Figures 1 to 4 shown, the ingate 13 is only provided on the first runner plate 11. One end of the ingate 13 is provided on the first runner plate 11, and the other end of the ingate 13 can be used to connect the second runner plate 12. Since the first runner plate 11 can also be provided with a structure connecting the connecting threaded rod 30 and the sprue cup 20, setting the ingate 13 on the first runner plate 11 can concentrate the complex structure on the first runner plate 11. Although it will make the tooling structure for pressing the second runner plate 12 more complex, it is beneficial to simplify the structure of the second runner plate 12 and make the tooling structure for pressing the second runner plate 12 simple, thus simplifying the manufacture of the second runner plate 12;

[0092] Situation 2: The ingate 13 is only provided on the second runner plate 12. One end of the ingate 13 is provided on the second runner plate 12, and the other end of the ingate 13 can be used to connect the first runner plate 11. When manufacturing test bars such as the impact test bar as Figure 11 shown and the radish test bar as Figure 13 shown, which only need to be fixed at one end, not setting the ingate 13 on the first runner plate 11 can save the step of cutting off the ingate 13 during the assembly process of the test bar module 100, simplifying the assembly process, but making the structure of the second runner plate 12 complex and increasing the manufacturing difficulty of the second runner plate 12;

[0093] Situation 3: The ingate 13 is provided on both the first runner plate 11 and the second runner plate 12 at the same time, and the connection between the first runner plate 11 and the second runner plate 12 is realized through the connection of the ends of the two ingates 13. In this case, when manufacturing test bars such as the impact test bar as Figure 11 shown and the radish test bar as Figure 13 shown, the ingate 13 on the first runner plate 11 still needs to be cut off, and the structures of both the first runner plate 11 and the second runner plate 12 are relatively complex. Compared with Situation 1 and Situation 2, the manufacturing difficulty has increased.

[0094] The central pouring tube 13 can be composed of only one main body rod. One end of the main body rod is integrally formed on at least one of the first distribution plate 11 and the second distribution plate 12, and the other end is detachably connected to the corresponding first distribution plate 11 or the second distribution plate 12. The first distribution plate 11 and the second distribution plate 12 can be used to install test bars such as tensile test bars and creep test bars directly through the connection of the central pouring tube 13.

[0095] The central pouring tube 13 can also include a main body rod and an extension rod 133. One end of the main body rod is integrally formed on at least one of the first distribution plate 11 and the second distribution plate 12, and the other end is detachably connected to one end of the extension rod 133. The other end of the extension rod 133 is detachably connected to the corresponding first distribution plate 11 or the second distribution plate 12. Setting the extension rod 133 can increase the distance between the first mounting portion 111 and the second mounting portion 122 to be suitable for the installation of test bars with longer bar bodies such as creep test bars and fatigue test bars. At the same time, since the extension rod 133 is a detachable structure, when test bars such as tensile test bars and creep test bars need to be installed, the extension rod 133 can be removed and the first distribution plate 11 and the second distribution plate 12 can be directly connected through the main body rod.

[0096] Thus, according to the test bar module rack 10 of the present application, through different combinations of the first distribution plate 11, the second distribution plate 12 and the central pouring tube 13, and in cooperation with different test bar wax molds 40, different test bar modules 100 can be assembled to manufacture different test bars. Compared with the prior art in which different mounting brackets need to be set for each test bar and different mounting brackets need to be manufactured with different toolings, the present application only needs to design fewer toolings for the production and manufacture of the first distribution plate 11, the second distribution plate 12 and the central pouring tube 13 to achieve the assembly of all test bar wax molds 40, improving the versatility of the test bar module rack 10 and being conducive to reducing production costs. And the test bar module rack 10 of the present application has a simple structure and is easy to assemble, which is conducive to improving production efficiency.

[0097] According to an embodiment of the present application, the first distribution plate 11 includes a first plate body 112 and a first bracket 113.

[0098] Specifically, the first plate body 112 is a circular sheet-like structure. The first plate body 112 has a hollow portion 112c penetrating along the axial direction of the first plate body 112. A plurality of first mounting portions 111 are evenly distributed at intervals along the circumference of the first plate body 112, and each first mounting portion 111 is an installation hole extending along the axial direction of the first plate body 112. The first bracket 113 is disposed at the center of the first plate body 112 and extends along the axial direction of the first plate body 112.

[0099] In other words, the first flow dividing disk 11 is at least composed of a circular sheet-shaped first disk body 112 and a first support 113 extending along the axial direction of the first disk body 112 from the center of the first disk body 112. The first disk body 112 is a hollow disk body with a hollow portion 112c. The number of the hollow portions 112c of the first disk body 112 can be multiple. For example, the first disk body 112 may include a first ring portion 112a and a first extending portion 112b extending radially inwards along the inner circumference of the first ring portion 112a. Among them, the first extending portion 112b may extend to be connected to the first support 113, and two adjacent first extending portions 112b, the first ring portion 112a and the first support 113 enclose to form the hollow portion 112c. The first ring portion 112a and the first extending portion 112b form a runner for casting a test bar during the subsequent casting process. Compared with a solid disk body, on the one hand, it plays a role in dividing the molten metal, enabling the molten metal to be uniformly injected along the runner, improving the process yield rate of the test bar, and on the other hand, it also reduces the use of the molten metal and lowers the production cost.

[0100] The first mounting portions 111 are evenly distributed at intervals on the circumferential edge portion of the first disk body 112, and the distances between two adjacent first mounting portions 111 are equal. If the first flow dividing disk 11 is a hollow disk body with a first ring portion 112a, the first mounting portions 111 may be arranged on the first ring portion 112a and evenly spaced on the first ring portion 112a.

[0101] As Figure 4 and Figure 5 shown, the first disk body 112 may include one first ring portion 112a and eight first extending portions 112b, and the first ring portion 112a and the first extending portions 112b together form eight hollow portions 112c. Sixteen first mounting portions 111 may be provided on the first ring portion 112a and evenly spaced. The first disk body 112 is centrosymmetric with respect to the axis of the first disk body 112. That is to say, sixteen test bar wax patterns 40 can be installed simultaneously by using the first disk body 112, and sixteen metal test bars can be produced simultaneously during the subsequent casting process, improving the production efficiency.

[0102] The first mounting portion 111 is a mounting hole extending along the axial direction of the first disk body 112, and one end of the test bar wax pattern 40 can be directly inserted into the mounting hole. The mounting hole is preferably a blind hole. In this way, after one end of the test bar wax pattern 40 is inserted into the blind hole, it can be limited by the blind hole, and the test bar wax pattern 40 can be fixed by pouring molten bonding wax into the connection gap. The structure of the blind hole is simple, and there is no need to change the shape of the test bar wax pattern 40. And compared with a through hole, the limiting function of the blind hole can prevent the test bar wax pattern 40 from falling out of the through hole, simplifying the assembly process.

[0103] One end of the first support 113 is provided at the center of the first side surface of the first disk body 112, and the other end may be provided with a spline for connecting the sprue cup 20.

[0104] According to an embodiment of the present application, the first support 113 is cylindrical, the first support 113 is coaxially arranged with the first disk body 112, and the outer wall surface of the first support 113 constitutes a part of the side wall of the hollow portion 112c.

[0105] Specifically, the first support 113 is a cylindrical support, and the axis of the first support 113 coincides with the axis of the first disk body 112. The outer wall surface of the first support 113 connected to the first disk body 112 constitutes a part of the side wall of the hollow portion 112c. If the first disk body 112 includes a first ring portion 112a and a first extension portion 112b, then a part of the outer wall surface of the first support 113, the opposite two side surfaces of two adjacent first extension portions 112b, and the inner wall surface of the first ring portion 112a together constitute the entire side wall surface of the hollow portion 112c. This structure of the first support 113 is simple, making the entire first runner plate 11 a centrally symmetric structure without special-shaped structures, which is beneficial to the production and manufacturing of the first runner plate 11.

[0106] According to an embodiment of the present application, the central sprue 13 is provided on the side of the first disk body 112 close to the second runner plate 12. The first end of the central sprue 13 is connected to the first disk body 112, and the second end of the central sprue 13 is connected to the second runner plate 12.

[0107] Specifically, the central sprue 13 is a tubular structure and may be cylindrical. The first disk body 112 has two side surfaces. The first side surface of the first disk body 112 is provided with the first support 113. The second side surface of the first disk body 112 may be opposite to the second runner plate 12. The central sprue 13 is provided on the second side surface of the first disk body 112 and extends along the axial direction of the first disk body 112. The two ends of the central sprue 13 are respectively connected to the first disk body 112 and the second runner plate 12.

[0108] The second runner plate 12 may also have a disk body structure, that is, the second runner plate 12 includes a second disk body 121, and a second mounting portion 122 is provided on the second disk body 121. The second disk body 121 may also have a hollow part, and the position, shape, and size of the hollow part of the second disk body 121 may correspond one-to-one to the position, shape, and size of the hollow portion 112c of the first disk body 112. Specifically, the second disk body 121 may have a second ring portion 121a and a second extension portion 121b. The second extension portion 121b extends radially inward along the inner wall of the second ring portion 121a. A plurality of second extension portions 121b extend inward and converge at the center of the second disk body 121. The center of the second disk body 121 is connected to the central sprue 13.

[0109] By providing a second ring portion 121a and a second extension portion 121b on the second disk body 121 of the second flow splitter disk 12, and connecting the middle runner 13 to the center of the second disk body 121, during subsequent casting, the molten metal can form a runner along the middle runner 13 and the second extension portion 121b, and pour the test bar from both the upper and lower directions simultaneously, which can reduce the heat melting during casting and cooling, improve the heat dissipation, and thus obtain a test bar with better structure and performance.

[0110] The first side surface of the second disk body 121 can face the first disk body 112, and a buffer cavity 121c can be provided on the second side surface of the second disk body 121. The buffer cavity 121c can be provided at the center of the second disk body 121 and is a hemispherical structure. When the molten metal enters the runner formed by the second flow splitter disk 12 through the runner formed by the middle runner 13, it can play a buffering role and avoid stress concentration.

[0111] According to an embodiment of the present application, the middle runner 13 and the first disk body 112 are integrally formed wax molds.

[0112] That is to say, the middle runner 13 can be integrally formed on the first disk body 112. Since the first flow splitter disk 11 can also be provided with a structure connecting the connecting threaded rod 30 and the sprue cup 20, integrally forming the middle runner 13 on the first flow splitter disk 11 can concentrate the complex structure on the first flow splitter disk 11. Although it will make the tooling structure for pressing the second flow splitter disk 12 more complex, it is beneficial to simplify the structure of the second flow splitter disk 12 and make the tooling structure for pressing the second flow splitter disk 12 simpler, thus simplifying the production of the second flow splitter disk 12.

[0113] According to an embodiment of the present application, the second end of the middle runner 13 is provided with a first connection portion 131, and a second connection portion 123 is provided on the side of the second flow splitter disk 12 close to the first flow splitter disk 11. The first connection portion 131 is connected to the second connection portion 123.

[0114] In other words, the middle runner 13 realizes the connection of the first flow splitter disk 11 and the second flow splitter disk 12 through the connection and cooperation of the first connection portion 131 provided at the second end of the middle runner 13 and the second connection portion 123 provided on the first flow splitter disk 11. Specifically, the second connection portion 123 can be provided at the center of the first side surface of the second disk body 121 and face the first disk body 112.

[0115] The first connection portion 131 and the second connection portion 123 can be connected by means of plugging, snap connection, etc., and can be fixed with molten bonding wax at the connection; the first connection portion 131 and the second connection portion 123 can also be directly fixed with molten bonding wax. At this time, the end faces of the first connection portion 131 and the second connection portion 123 can both be flat surfaces, but plane bonding is prone to form misalignment.

[0116] Preferably, corresponding positioning structures may be provided on the first connecting portion 131 and the second connecting portion 123 to make the position of the first mounting portion 111 on the first flow dividing plate 11 correspond to the position of the second mounting portion 122 on the second flow dividing plate 12 when connecting the middle injection pipe 13 and the second flow dividing plate 12.

[0117] According to an embodiment of the present application, the first connecting portion 131 is a cross spline, and the second connecting portion 123 is a cross keyway.

[0118] Specifically, as Figure 5 and Figure 6 shown, the first connecting portion 131 provided on the middle injection pipe 13 may be a cross spline, and the second connecting portion 123 provided on the second flow dividing plate 12 may be a cross keyway. Through the cooperation of the cross spline and the cross keyway, not only can the connection between the middle injection pipe 13 and the second flow dividing plate 12 be realized, but also the positioning of the second flow dividing plate 12 can be realized, so that the position of the first mounting portion 111 on the first flow dividing plate 11 corresponds to the position of the second mounting portion 122 on the second flow dividing plate 12.

[0119] According to an embodiment of the present application, a baffle 124 is provided on one side of the second flow dividing plate 12 close to the first flow dividing plate 11 and is arranged around the cross keyway.

[0120] Specifically, the second flow dividing plate 12 may further be provided with a baffle 124. The baffle 124 is arranged on the first side surface of the second flow dividing plate 12 and surrounds the keyway to prevent wax leakage when the middle injection pipe 13 and the second flow dividing plate 12 are fixedly connected by using molten bonding wax.

[0121] The first test bar module 100 according to an embodiment of the present invention includes a test bar module frame 10, a sprue cup 20, a threaded rod 30, and a test bar wax mold 40.

[0122] Specifically, the sprue cup 20 is arranged on the side of the first flow dividing plate 11 away from the second flow dividing plate 12. The threaded rod 30 is arranged on the first flow dividing plate 11 and is located inside the sprue cup 20. One end of the test bar wax mold 40 is connected to the first mounting portion 111.

[0123] In other words, the test bar module 100 is composed of a test bar module frame 10, a sprue cup 20 arranged on the side of the first flow dividing plate 11 away from the second flow dividing plate 12, a threaded rod 30 arranged inside the sprue cup 20 and connected to the first flow dividing plate 11, and a test bar wax mold 40.

[0124] The threaded rod 30 is arranged at the center of the first side surface of the first flow dividing plate 11, and the axis of the threaded rod 30 may coincide with the axis of the first flow dividing plate 11. That is to say, the threaded rod 30 and the first flow dividing plate 11 may be coaxially arranged. Arranging the threaded rod 30 on the first flow dividing plate 11 enables the test bar module 100 to be used in the automatic shell-making line production for subsequent shell mold manufacturing.

[0125] The sprue cup 20 is arranged on the first side surface of the first runner plate 11, and the threaded rod 30 is located inside the sprue cup 20. The sprue cup 20 can be connected to the first support 113. Specifically, splines can be provided at one end of the first support 113 away from the first disc body 112, and the sprue cup 20 is provided with spline grooves that cooperate with the splines.

[0126] The test bar wax mold 40 can be a test bar wax mold 40 for casting impact test bars or radish test bars, etc., which only need to be fixed at one end. Figure 11 and Figure 13 As shown in the figure, taking the first mounting portion 111 as a blind hole as an example, the connection between the test bar wax mold 40 and the first mounting portion 111 will be described in detail. One end of the impact test bar wax mold 40 and the radish test bar wax mold 40 has a convex portion that cooperates with the first mounting portion 111. The convex portions of multiple test bar wax molds 40 are respectively inserted into the corresponding blind holes, and then they can be fixed by melting and bonding wax. Finally, the test bar module 100 as shown in the figure can be formed. Taking the first runner plate 11 having sixteen first mounting portions 111 as an example, the test bar module 100 can be used to cast sixteen metal test bars simultaneously. Figure 10 and Figure 12 As shown in the figure. Taking the first runner plate 11 having sixteen first mounting portions 111 as an example, the test bar module 100 can be used to cast sixteen metal test bars simultaneously.

[0127] It should be noted that for the test bar module 100 for casting impact test bars or radish test bars, if the downsprue 13 is integrally formed on the first runner plate 11, the downsprue 13 provided on the first runner plate 11 can be cut off, and the second runner plate 12 is not required to install the corresponding test bar wax mold 40, so as to reduce the use of molten metal during casting, improve production efficiency, and reduce production costs.

[0128] Preferably, the downsprue 13 and the second runner plate 12 may not be integrally formed. That is to say, the first runner plate 11 provided with the downsprue 13 can be only pressed out by a tooling, and then the downsprue 13 of the first runner plate 11 is cut off for assembling the impact test bar wax mold 40 or the radish test bar wax mold 40, thereby simplifying the manufacturing process and reducing production costs.

[0129] The assembly method of the first test bar module 100 according to the embodiment of the present invention includes the following steps:

[0130] Place the threaded rod 30 into the tooling for pressing the first runner plate 11, and press the first runner plate 11 having the threaded rod 30;

[0131] Press the test bar wax mold 40;

[0132] If the downsprue 13 is integrally formed on the first runner plate 11, then cut off the downsprue 13;

[0133] Connect one end of the test bar wax mold 40 to the first mounting portion 111, and seal the connection gap with melting and bonding wax.

[0134] It should be noted that the threaded rod 30 can be a prefabricated metal threaded rod 30. The threaded rod 30 is placed at a predetermined position in the tooling for pressing the first runner plate 11, and the wax mold is pressed with this tooling, so that the threaded rod 30 can be fixedly connected to the first runner plate 11.

[0135] The test bar wax mold 40 in the first type of test bar module 100 is an impact test bar wax mold 40 or a radish test bar wax mold 40. If the sprue 13 is integrally formed with the first runner plate 11, the sprue 13 can be cut off using a wax knife.

[0136] If one end of the test bar wax mold 40 has a convex part and the first mounting part 111 is a mounting hole, the convex part can be inserted into the mounting hole to realize the connection between the test bar wax mold 40 and the first mounting part 111. The molten bonding wax is used to seal the connection gap, and the molten bonding wax can solidify quickly to fix the connection part.

[0137] The second type of test bar module 100 according to the embodiment of the present invention includes a test bar module frame 10, a pouring cup 20, a threaded rod 30, and a test bar wax mold 40.

[0138] Specifically, the pouring cup 20 is arranged on the side of the first runner plate 11 away from the second runner plate 12. The threaded rod 30 is arranged on the first runner plate 11 and is located inside the pouring cup 20. One end of the test bar wax mold 40 is connected to the first mounting part 111, and the other end of the test bar wax mold 40 is connected to the second mounting part 122.

[0139] In the second type of test bar module 100, the arrangement of the threaded rod 30 and the pouring cup 20 is the same as that of the threaded rod 30 and the pouring cup 20 in the first type of test bar module 100, and will not be elaborated again.

[0140] The test bar wax mold 40 can be a test bar wax mold 40 for casting tensile test bars or creep test bars, etc., which require both ends to be fixed. Taking the first mounting part 111 as a blind hole and the second mounting part 122 as a through hole as an example, the fixed installation of the test bar wax mold 40 will be described in detail. One end of the test bar wax mold 40 is inserted into the blind hole and is limited by the blind hole, and the other end is inserted into the through hole. Then, the two ends can be fixedly connected by molten bonding wax to form a test bar module 100 as shown in Figure 14 and Figure 15 shown.

[0141] The assembly method of the second type of test bar module 100 according to the embodiment of the present invention includes the following steps:

[0142] Place the threaded rod 30 into the tooling for pressing the first runner plate 11, and press the first runner plate 11 with the threaded rod 30;

[0143] Press the test bar wax mold 40 and the second runner plate 12;

[0144] Connect the first shunt plate 11 and the second shunt plate 12 through the middle runner 13, and pour molten bonding wax into the connecting gap;

[0145] Connect the sprue cup 20 to the first shunt plate 11, and pour molten bonding wax into the connecting gap;

[0146] Connect the two ends of the test bar wax mold 40 to the first mounting part 111 and the second mounting part 122 respectively, and seal the connecting gap with molten bonding wax.

[0147] Taking the first mounting part 111 as a blind hole and the second mounting part 122 as a through hole as an example, the specific process of connecting the two ends of the test bar wax mold 40 to the first mounting part 111 and the second mounting part 122 respectively can be that one end of the test bar wax mold 40 passes through the through hole from the second side surface of the second disk body 121 of the second shunt plate 12 and extends into the blind hole of the first shunt plate 11 until it is limited by the blind hole. At this time, the other end of the test bar wax mold 40 is located in the through hole of the first shunt plate 11. Molten bonding wax can be poured into the through hole from the second side surface of the second disk body 121 to fix the test bar wax mold 40.

[0148] The third test bar module 100 according to an embodiment of the present invention includes a test bar module frame 10, a sprue cup 20, a threaded rod 30, and a test bar wax mold 40.

[0149] Specifically, the middle runner 13 includes a body rod 132 and an extension rod 133 detachably connected to the body rod 132. The sprue cup 20 is arranged on the side of the first shunt plate 11 away from the second shunt plate 12. One end of the test bar wax mold 40 is connected to the first mounting part 111, and the other end of the test bar wax mold 40 is connected to the second mounting part 122.

[0150] In the second test bar module 100, the arrangement of the threaded rod 30 and the sprue cup 20 is the same as that of the threaded rod 30 and the sprue cup 20 in the first test bar module 100, and will not be elaborated again.

[0151] The test bar wax mold 40 can be a test bar wax mold 40 for casting creep test bars or fatigue test bars, etc. The body length of the creep test bar or fatigue test bar is greater than the body length of the tensile test bar. Therefore, a longer middle runner 13 is required to ensure a greater distance between the first shunt plate 11 and the second shunt plate 12.

[0152] In the test bar module frame 10 of the second test bar module 100, the middle runner 13 is composed of a main body rod 132 and an extension rod 133. The main body rod 132 can be integrally formed with the first distribution plate 11. One end of the main body rod 132 is connected to the first distribution plate 11, and the other end is detachably connected to the extension rod 133. Specifically, the other end of the main body rod 132 can have a cross spline, and one end of the extension rod 133 can be provided with a keyway that cooperates with the cross spline of the main body rod 132, and the other end can be provided with a cross spline that cooperates with the cross keyway of the second distribution plate 12.

[0153] By providing the extension rod 133, the length of the middle runner 13 can be extended to be suitable for the assembly of creep test bars or fatigue test bars. At the same time, since the extension rod 133 is detachably connected to the main body rod 132, the test bar module frame 10 can be suitable for the assembly of tensile test bars or endurance test bars without installing the extension rod 133, making the test bar module frame 10 universal and reducing the number of toolings required for producing the module frame.

[0154] The assembly method of the third test bar module 100 according to the embodiment of the present invention includes the following steps:

[0155] Place the threaded rod 30 into the tooling for pressing the first distribution plate 11, and press the first distribution plate 11 with the threaded rod 30;

[0156] Press the test bar wax mold 40, the second distribution plate 12 and the extension rod 133;

[0157] Connect the main body rod 132 and the extension rod 133 to form the middle runner 13, and pour molten bonding wax into the connection gap;

[0158] Connect the first distribution plate 11 and the second distribution plate 12 through the middle runner 13, and pour molten bonding wax into the connection gap;

[0159] Connect the sprue cup 20 to the first distribution plate 11, and pour molten bonding wax into the connection gap,

[0160] Connect the two ends of the test bar wax mold 40 to the first mounting portion 111 and the second mounting portion 122 respectively, and seal the connection gap with molten bonding wax.

[0161] When assembling the third test bar module 100, the two ends of the test bar wax mold 40 can be connected to the first mounting portion 111 and the second mounting portion 122 respectively by the same method as assembling the second test bar module 100, which will not be elaborated here.

[0162] Since the test bar module frame 10 according to the above embodiment of the present application has the above technical effects, therefore, various test bar modules 100 according to the embodiments of the present application also have corresponding technical effects, that is, the production cost is reduced and the production efficiency is improved.

[0163] In addition, since the test bar module rack 10 of the test bar module 100 according to the embodiments of the present application has the above technical effects, accordingly, various assembly methods of the test bar module 100 according to the embodiments of the present application also have corresponding technical effects, that is, the production cost is reduced and the production efficiency is improved.

[0164] It should be noted that more first mounting parts 111 can also be provided on the first flow dividing plate 11 of the test bar module rack 10 according to requirements. For example, as Figure 20 shown, twenty-four first mounting parts 111 can be provided on the first flow dividing plate 11, and twenty-four second mounting parts 122 can be provided on the corresponding second flow dividing plate 12. That is to say, the test bar module assembled by the test bar module rack 10 can cast twenty-four test bars at the same time to improve the production efficiency.

[0165] The test bar module 100 can also have multiple second flow dividing plates 12. For example, as Figure 21 shown, the test bar module 100 can include one first flow dividing plate 11, two middle column pipes 13 and two second flow dividing plates 12. One middle column pipe 13 is used to connect the first flow dividing plate 11 and the first second flow dividing plate 12, and the other middle column pipe 13 is used to connect the first second flow dividing plate 12 and the second second flow dividing plate 12. That is to say, the test bar module 100 forms a two-layer structure, each layer can be used to cast N test bars, and two layers can cast 2N test bars at the same time, greatly improving the production efficiency, but the process requirements are relatively high.

[0166] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An assembling method for a test bar module, characterized in that, the test bar module includes a test bar module frame, and the test bar module frame includes the following structures: A first runner plate, and the first runner plate includes the following structures: The first runner plate is provided with a plurality of first mounting parts for mounting test bar wax patterns, and the plurality of first mounting parts are arranged at intervals along the circumferential direction of the first runner plate; A first disk body, the first disk body is a circular sheet-like structure, the first disk body has a hollow part penetrating along the axial direction of the first disk body, and the plurality of first mounting parts are evenly distributed at intervals along the circumferential direction of the first disk body, and each of the first mounting parts is an installation hole extending along the axial direction of the first disk body; A first bracket, the first bracket is arranged at the center of the first disk body extending along the axial direction of the first disk body; A second runner plate, the second runner plate is arranged opposite to the first runner plate in the axial direction of the first runner plate, and the second runner plate is provided with second mounting parts corresponding to the positions of the first mounting parts; A central sprue, the central sprue is arranged on at least one of the first runner plate and the second runner plate to connect the first runner plate and the second runner plate; the central sprue and the first disk body are integrally formed wax patterns; a first connecting part is provided at the second end of the central sprue, and a second connecting part is provided on the side of the second runner plate close to the first runner plate, and the first connecting part is connected to the second connecting part; the first connecting part is a cross spline, and the second connecting part is a cross keyway; a baffle is provided on the side of the second runner plate close to the first runner plate and surrounding the cross keyway; The test bar module further includes the following structures: A pouring cup, the pouring cup is arranged on the side of the first runner plate away from the second runner plate; A threaded rod, the threaded rod is arranged on the first runner plate and located inside the pouring cup; A test bar wax pattern, one end of the test bar wax pattern is connected to the first mounting part, The assembling method includes the following steps: S1: Place the threaded rod into a tooling for pressing the first runner plate, and press the first runner plate with the threaded rod; S2: Press the test bar wax pattern; S3: If the central sprue is integrally formed on the first runner plate, cut off the central sprue; S4: Connect one end of the test bar wax pattern to the first mounting part, and seal the connection gap with molten bonding wax.

2. An assembling method for a test bar module, characterized in that, the test bar module includes a test bar module frame, and the test bar module frame includes the following structures: A first runner plate, and the first runner plate includes the following structures: The first runner plate is provided with a plurality of first mounting parts for mounting test bar wax patterns, and the plurality of first mounting parts are arranged at intervals along the circumferential direction of the first runner plate; A first disk body, the first disk body is a circular sheet-like structure, the first disk body has a hollow part penetrating along the axial direction of the first disk body, and the plurality of first mounting parts are evenly distributed at intervals along the circumferential direction of the first disk body, and each of the first mounting parts is an installation hole extending along the axial direction of the first disk body; A first bracket, the first bracket being arranged at the center of the first disc body and extending along the axial direction of the first disc body; A second flow dividing disc, the second flow dividing disc being arranged opposite to the first flow dividing disc in the axial direction of the first flow dividing disc, and the second flow dividing disc being provided with a second mounting portion corresponding to the position of the first mounting portion; A middle pouring tube, the middle pouring tube being arranged on at least one of the first flow dividing disc and the second flow dividing disc to connect the first flow dividing disc and the second flow dividing disc; the middle pouring tube and the first disc body are an integrally formed wax mold; a first connecting portion is provided at the second end of the middle pouring tube, a second connecting portion is provided on one side of the second flow dividing disc close to the first flow dividing disc, and the first connecting portion is connected to the second connecting portion; the first connecting portion is a cross spline, and the second connecting portion is a cross keyway; a baffle is provided on one side of the second flow dividing disc close to the first flow dividing disc and surrounds the cross keyway; The test bar module further includes the following structures: A pouring cup, the pouring cup being arranged on one side of the first flow dividing disc away from the second flow dividing disc; A threaded rod, the threaded rod being arranged on the first flow dividing disc and located inside the pouring cup; A test bar wax mold, one end of the test bar wax mold being connected to the first mounting portion and the other end being connected to the second mounting portion The assembly method includes the following steps: S1: Place the threaded rod into the tooling for pressing the first flow dividing disc, and press the first flow dividing disc with the threaded rod; S2: Press the test bar wax mold and the second flow dividing disc; S3: Connect the first flow dividing disc and the second flow dividing disc through the middle pouring tube, and pour molten bonding wax into the connection gap; S4: Connect the pouring cup to the first flow dividing disc, and pour molten bonding wax into the connection gap; S5: Connect the two ends of the test bar wax mold to the first mounting portion and the second mounting portion respectively, and seal the connection gap with molten bonding wax.

3. An assembly method of a test bar module, characterized in that, The test bar module includes a test bar module frame, and the test bar module frame includes the following structures: A first flow dividing disc, the first flow dividing disc includes the following structures: The first flow dividing disc is provided with a plurality of first mounting portions for mounting a test bar wax mold, and the plurality of first mounting portions are arranged at intervals along the circumferential direction of the first flow dividing disc; A first disc body, the first disc body is a circular sheet-like structure, the first disc body has a hollow portion penetrating along the axial direction of the first disc body, and the plurality of first mounting portions are evenly distributed at intervals along the circumferential direction of the first disc body, and each first mounting portion is an installation hole extending along the axial direction of the first disc body; A first bracket, the first bracket being arranged at the center of the first disc body and extending along the axial direction of the first disc body; A second flow dividing disc, the second flow dividing disc being arranged opposite to the first flow dividing disc in the axial direction of the first flow dividing disc, and the second flow dividing disc being provided with a second mounting portion corresponding to the position of the first mounting portion; The central pouring tube, the central pouring tube includes a main body rod and an extension rod detachably connected to the main body rod; the central pouring tube is provided on at least one of the first distribution plate and the second distribution plate to connect the first distribution plate and the second distribution plate; the central pouring tube and the first plate body are an integrally formed wax mold; a first connecting portion is provided at the second end of the central pouring tube, and a second connecting portion is provided on one side of the second distribution plate close to the first distribution plate, and the first connecting portion is connected to the second connecting portion; the first connecting portion is a cross spline, and the second connecting portion is a cross key slot; a baffle is provided on one side of the second distribution plate close to the first distribution plate and surrounds the cross key slot; The test bar module further includes the following structures: A sprue cup, the sprue cup is arranged on the side of the first distribution plate away from the second distribution plate; A threaded rod, the threaded rod is arranged on the first distribution plate and located inside the sprue cup; A test bar wax mold, one end of the test bar wax mold is connected to the first mounting portion, The assembly method includes the following steps: S1: Place the threaded rod into the tooling for pressing the first distribution plate, and press the first distribution plate with the threaded rod; S2: Press the test bar wax mold, the second distribution plate and the extension rod; S3: Connect the main body rod and the extension rod to form the central pouring tube, and pour molten bonding wax into the connection gap; S4: Connect the first distribution plate and the second distribution plate through the central pouring tube, and pour molten bonding wax into the connection gap; S5: Connect the sprue cup to the first distribution plate, and pour molten bonding wax into the connection gap; S6: Connect the two ends of the test bar wax mold to the first mounting portion and the second mounting portion respectively, and seal the connection gap with molten bonding wax.

4. The assembly method according to any one of claims 1-3, characterized in that, The first bracket is cylindrical, the first bracket is coaxially arranged with the first plate body, and the outer wall surface of the first bracket constitutes a part of the side wall of the hollow portion.

5. The assembly method according to any one of claims 1-3, characterized in that, The central pouring tube is arranged on the side of the first plate body close to the second distribution plate, the first end of the central pouring tube is connected to the first plate body, and the second end of the central pouring tube is connected to the second distribution plate.

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