Preparation method of high-performance die steel

Abstract

The invention discloses a high-performance die steel preparation method, and belongs to the technical field of die preparation, the technical key point is that the high-performance die steel preparation method comprises a smelting cylinder box body, a feeding and distributing mechanism, an electric rotating shaft and a mixing mechanism, and the high-performance die steel preparation method further comprises the following steps: step 1, placing various alloys in the feeding and distributing mechanism, forming an opening in the side surface of the feeding and distributing mechanism, the feeding and distributing mechanism is obliquely arranged; secondly, an opening in the side face of the feeding and distributing mechanism is placed at an opening of the smelting cylinder box, and the multiple kinds of alloy fall into the smelting cylinder box according to different sequences; and thirdly, the mixing mechanism is installed in the smelting cylinder box body through an electric rotating shaft, the multiple alloys and the basic molten steel are mixed through the mixing mechanism, smelting is completed in the smelting cylinder box body, and the beneficial effect that multiple sets of different alloys can be put in batches to improve the strength of the mold is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of mold preparation, and in particular to a method for preparing high-performance mold steel. Background Art

[0002] Die steel is a type of steel used to make cold stamping dies, hot forging dies, die-casting dies and other dies. Dies are the main processing tools for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. Their quality directly affects the quality of the pressure processing process, the precision output of the product, and the production cost. Usually, the quality and service life of the mold mainly depend on reasonable structural design, processing accuracy, mold materials, and heat treatment. According to the service conditions of the mold, mold steel can be divided into four categories, including cold working die steel, hot working die steel, plastic mold steel, and plastic mold steel. Among them, hot working molds refer to the tooling used to make heated metal or liquid metal into the desired product, such as hot forging molds, hot upsetting molds, hot extrusion molds, die-casting molds, and high-speed forming molds, and the various mold steels used are collectively referred to as hot working die steels.

[0003] With the rapid development of my country's automobile industry, rail transit, aerospace, engineering machinery and other industries, the demand for forgings of various types of mechanical equipment has increased significantly, the use of forging machinery to process forgings has increased, and the demand for steel for forging dies is very large. Since the temperature difference between the surface and the core of the hot working die is large under working conditions, the performance requirements for hot working die materials are also relatively high, and requirements are required for hardness and strength performance, toughness, heat resistance, wear resistance, etc. In particular, hot working dies are repeatedly heated and water-cooled during work, and are subject to great impact force, which places high requirements on hot working die steel, such as high strength, high mechanical properties, wear resistance, heat resistance and low sticking force.

[0004] However, the existing equipment has the problem of not being able to put in multiple groups of different alloys in batches to improve the strength of the mold. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the embodiments of the present invention is to provide a method for preparing high-performance mold steel to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for preparing high-performance die steel includes a smelting cylinder box, a feeding and distributing mechanism, an electric rotating shaft and a mixing mechanism, and further includes the following steps:

[0008] Step 1: placing a variety of alloys in the feed and distribution mechanism, setting an opening on the side of the feed and distribution mechanism, and setting the feed and distribution mechanism at an angle;

[0009] Step 2: Place the opening on the side of the feed and distribution mechanism at the opening of the smelting cylinder box, and multiple alloys fall into the smelting cylinder box in different orders;

[0010] Step 3: The mixing mechanism is installed in the smelting cylinder box through an electric rotating shaft. Various alloys are mixed with the basic molten steel through the mixing mechanism, and the smelting is completed in the smelting cylinder box.

[0011] As a further scheme of the present invention, the feeding and dividing mechanism is arranged on an inclined mounting plate, the inclined mounting plate is fixedly connected to an L-shaped support rod, the L-shaped support rod is arranged on one side of the smelting cylinder box, the feeding and dividing mechanism includes a fixed disk, a rotating assembly and a partition assembly, the fixed disk is fixedly connected to the inclined mounting plate, an opening is arranged on one side of the fixed disk, the rotating assembly is arranged at a center position in the fixed disk, the rotating assembly is movably connected to the partition assembly, the rotating assembly and the partition assembly are arranged in the fixed disk, the rotating assembly is connected to the inclined mounting plate, and the partition assembly is movably connected to the inclined mounting plate.

[0012] As a further solution of the present invention, the rotating assembly includes:

[0013] A pressing adjustment member, wherein the pressing adjustment member is arranged at a central position in the fixed disk, and a spring is arranged inside the pressing adjustment member;

[0014] A limiting rod, wherein the limiting rod is fixedly connected to the pressing and adjusting member, and the limiting rod is evenly distributed around the circumference of the pressing and adjusting member;

[0015] A limiting ring, wherein the limiting ring is arranged on the inclined mounting plate and is fixedly connected to the inclined mounting plate;

[0016] A redirection groove, wherein the redirection groove is arranged on the limiting circular ring, the redirection groove is evenly distributed about the circumference of the limiting circular ring, and the redirection groove is movably connected to the limiting rod.

[0017] As a further solution of the present invention, the partition assembly includes:

[0018] A rotating ring, the rotating ring being movably connected to the top plate of the fixed disk, a limiting block being arranged inside the rotating ring, the limiting blocks being evenly distributed about the circumference of the inner wall of the rotating ring, and the limiting blocks being movably connected to the limiting rod;

[0019] A partition plate, wherein the partition plate is fixedly connected to the outer wall of the rotating ring, the partition plates are evenly distributed around the circumference of the outer wall of the rotating ring, and the partition plates are movably connected to the inclined mounting plate.

[0020] As a further solution of the present invention, the mixing mechanism comprises:

[0021] A mixing installation component, wherein the mixing installation component is connected to the smelting cylinder box body via an electric rotating shaft, the mixing installation component is movably connected to the electric rotating shaft, a mixing redirection component is arranged inside the mixing installation component, and the mixing redirection component is connected to the mixing installation component via a fixed connecting rod;

[0022] A mixing assembly is movably connected to the mixing redirection assembly, and the mixing assembly passes through the mixing installation assembly.

[0023] As a further solution of the present invention, the hybrid installation assembly includes:

[0024] A mounting sleeve, wherein the mounting sleeve is disposed in the smelting cylinder housing, the mounting sleeve is connected to the smelting cylinder housing via an electric rotating shaft, and the mounting sleeve is movably connected to the electric rotating shaft;

[0025] A through hole is provided on the side of the mounting sleeve, and the through hole is movably connected to the mixing assembly.

[0026] As a further solution of the present invention, the hybrid redirection assembly:

[0027] An inner sleeve, wherein the inner sleeve is disposed in the mounting sleeve and is movably connected to the mounting sleeve via a fixed connecting rod;

[0028] An L-shaped connecting rod, one end of which is fixedly connected to the inner wall of the inner sleeve, and the other end of which is connected to a redirecting block, and the redirecting block is movably connected to the mixing assembly;

[0029] A groove is provided below the inner sleeve and is movably connected to the mixing assembly.

[0030] As a further embodiment of the present invention, the mixing assembly comprises:

[0031] A redirecting rod, the redirecting rod is movably connected to the redirecting block and the groove, and the redirecting rod is fixedly connected to the connecting plate;

[0032] A connecting rod is arranged on the other side of the connecting plate, one end of the connecting rod is fixedly connected to the connecting plate, the connecting rod is movably connected to the through hole, and the other end of the connecting rod is fixedly connected to the mixing piece.

[0033] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0034] Placing a variety of alloy materials in the feeding and dividing mechanism can separate the various alloy materials, and different alloy elements can be added in batches after the molten steel reaches a certain temperature. Since a spring is arranged in the pressing adjustment part, the pressing adjustment part can move downward when pressed downward, and the pressing adjustment part drives the limit rod to move downward;

[0035] Since the redirecting groove is set to a V-shaped structure and the redirecting groove is set below the limit rod, and the number of the limit rods is consistent with the number of the redirecting grooves, the position of the limit rod can be changed when the limit rod touches the redirecting groove downward, so that the limit rod is moved from the original position to the adjacent limit block. At this time, the number of limit blocks is consistent with the number of redirecting grooves, so that the limit rod can be fixed by the adjacent limit blocks. At this time, the limit block is pushed by the limit rod to achieve the effect of the limit block driving the rotating ring to rotate. At this time, the rotating ring drives the partition plate to rotate, and the partition plate rotates, so that alloy materials placed differently can fall into the smelting cylinder box through the opening on the fixed plate.

[0036] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of an embodiment of the invention.

[0038] Figure 2 In the embodiment of the invention Figure 1 sectional view of .

[0039] Figure 3 In the embodiment of the invention Figure 1 Schematic diagram of the structure of the medium feed and material distribution mechanism.

[0040] Figure 4 In the embodiment of the invention Figure 3 Schematic diagram of the internal structure.

[0041] Figure 5 In the embodiment of the invention Figure 4 Side view of.

[0042] Figure 6 In the embodiment of the invention Figure 1 Schematic diagram of the structure of the mixing mechanism.

[0043] Figure 7 In the embodiment of the invention Figure 6 Schematic diagram of the internal structure.

[0044] Figure 8 In the embodiment of the invention Figure 7 Bottom view of .

[0045] Fig. 9In the embodiment of the invention Figure 2 Schematic diagram of the structure of the mixing mechanism.

[0046] Figure markings: 1-smelting cylinder box, 2-L-shaped support rod, 3-inclined mounting plate, 4-feeding and dividing mechanism, 41-fixed plate, 42-rotating component, 421-pressing adjustment part, 422-limiting rod, 423-limiting ring, 424-redirecting groove, 43-partitioning component, 431-rotating ring, 432-limiting block, 433-partitioning plate, 5-electric rotating shaft, 6-mixing mechanism, 61-mixing mounting component, 611-mounting sleeve, 612-through hole, 62-mixing redirecting component, 621-inner sleeve, 622-L-shaped connecting rod, 623-redirecting block, 624-groove, 63-mixing component, 631-redirecting rod, 632-connecting plate, 633-connecting rod, 634-mixing part, 64-fixed connecting rod. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0049] In one embodiment, a method for preparing high performance mold steel, see Figures 1 to 9 , including a smelting cylinder box 1, a feeding and distributing mechanism 4, an electric rotating shaft 5 and a mixing mechanism 6, and also including the following steps:

[0050] Step 1: placing a variety of alloys in the feed and distribution mechanism 4, setting an opening on the side of the feed and distribution mechanism 4, and setting the feed and distribution mechanism 4 at an angle;

[0051] Step 2: Place the opening of the side of the feed distribution mechanism 4 at the opening of the smelting cylinder box 1, and multiple alloys fall into the smelting cylinder box 1 in different orders;

[0052] Step 3: The mixing mechanism 6 is installed in the smelting cylinder box 1 through the electric rotating shaft 5, and the various alloys are mixed with the basic molten steel through the mixing mechanism 6, and the smelting is completed in the smelting cylinder box 1.

[0053] In this embodiment, smelting technology is the basic process for the preparation of high-performance mold steel, which mainly involves the melting of metal raw materials, the adjustment of alloy components and the removal of impurities to ensure the uniformity, purity and structural stability of the steel. The smelting of mold steel usually adopts methods such as electric arc furnace (EAF), induction furnace (IF) and vacuum induction furnace (VIM), and the specific selection depends on the required steel quality and production requirements.

[0054] During the smelting process, after the molten steel reaches a certain temperature, different alloy elements, such as manganese (Mn), silicon (Si), nickel (Ni), etc., are added in batches to avoid composition fluctuations and burning and improve the alloy yield.

[0055] In one embodiment, see Figures 1 to 9 The feeding and distributing mechanism 4 is arranged on the inclined mounting plate 3, the inclined mounting plate 3 is fixedly connected to the L-shaped support rod 2, the L-shaped support rod 2 is arranged on one side of the smelting cylinder box 1, the feeding and distributing mechanism 4 includes a fixed disk 41, a rotating component 42 and a partition component 43, the fixed disk 41 is fixedly connected to the inclined mounting plate 3, one side of the fixed disk 41 is provided with an opening, the rotating component 42 is arranged at the center position of the fixed disk 41, the rotating component 42 is movably connected to the partition component 43, the rotating component 42 and the partition component 43 are arranged in the fixed disk 41, the rotating component 42 is connected to the inclined mounting plate 3, and the partition component 43 is movably connected to the inclined mounting plate 3.

[0056] For further information, see Figures 1 to 9 , the rotating assembly 42 comprises:

[0057] A pressing adjustment member 421, wherein the pressing adjustment member 421 is disposed at a central position in the fixing plate 41, and a spring is disposed inside the pressing adjustment member 421;

[0058] A limiting rod 422, wherein the limiting rod 422 is fixedly connected to the pressing adjustment member 421, and the limiting rod 422 is evenly distributed around the circumference of the pressing adjustment member 421;

[0059] A limiting ring 423, wherein the limiting ring 423 is disposed on the inclined mounting plate 3, and the limiting ring 423 is fixedly connected to the inclined mounting plate 3;

[0060] The redirection groove 424 is arranged on the limiting ring 423 . The redirection groove 424 is evenly distributed about the circumference of the limiting ring 423 . The redirection groove 424 is movably connected to the limiting rod 422 .

[0061] For further information, see Figures 1 to 9 , the partition assembly 43 comprises:

[0062] A rotating ring 431, wherein the rotating ring 431 is movably connected to the top plate of the fixed disk 41, and a limiting block 432 is arranged inside the rotating ring 431, and the limiting blocks 432 are evenly distributed around the circumference of the inner wall of the rotating ring 431, and the limiting blocks 432 are movably connected to the limiting rod 422;

[0063] The partition plate 433 is fixedly connected to the outer wall of the rotating ring 431 , the partition plates 433 are evenly distributed around the circumference of the outer wall of the rotating ring 431 , and the partition plates 433 are movably connected to the inclined mounting plate 3 .

[0064] In this embodiment, a plurality of alloy materials are placed in the feed and distribution mechanism 4, and the plurality of alloy materials can be placed separately. After the molten steel reaches a certain temperature, different alloy elements can be added in batches. Since a spring is provided in the pressing adjustment member 421, the pressing adjustment member 421 can move downward when pressed downward, and the pressing adjustment member 421 drives the limit rod 422 to move downward.

[0065] Since the redirecting groove 424 is set to a V-shaped structure, and the redirecting groove 424 is set below the limit rod 422, and the number of the limit rods 422 is consistent with the number of the redirecting grooves 424, the limit rod 422 can change the position of the limit rod 422 when it contacts the redirecting groove 424 downward, so that the limit rod 422 is moved from the original position to the adjacent limit block 432. At this time, the number of the limit blocks 432 is consistent with the number of the redirecting grooves 424, so that the limit rod 42 can be fixed by the adjacent limit blocks 432. At this time, the limit block 432 is pushed by the limit rod 422, so that the limit block 432 drives the rotating ring 431 to rotate. At this time, the rotating ring 431 drives the partition plate 433 to rotate, and the partition plate 433 rotates, so that alloy materials placed differently can fall into the smelting cylinder box 1 through the opening on the fixed disk 41.

[0066] In one embodiment, see Figures 1 to 9 , the mixing mechanism 6 comprises:

[0067] A mixing installation component 61, wherein the mixing installation component 61 is connected to the smelting cylinder box body 1 via an electric rotating shaft 5, the mixing installation component 61 is movably connected to the electric rotating shaft 5, a mixing redirection component 62 is arranged inside the mixing installation component 61, and the mixing redirection component 62 is connected to the mixing installation component 61 via a fixed connecting rod 64;

[0068] A mixing assembly 63 , wherein the mixing assembly 63 is movably connected to the mixing redirection assembly 62 , and the mixing assembly 63 passes through the mixing installation assembly 61 .

[0069] For further information, see Figures 1 to 9 , the hybrid installation assembly 61 comprises:

[0070] A mounting sleeve 611, wherein the mounting sleeve 611 is disposed in the smelting cylinder housing 1, the mounting sleeve 611 is connected to the smelting cylinder housing 1 via an electric rotating shaft 5, and the mounting sleeve 611 is movably connected to the electric rotating shaft 5;

[0071] A through hole 612 is provided on the side of the mounting sleeve 611 , and the through hole 612 is movably connected to the mixing assembly 63 .

[0072] For further information, see Figures 1 to 9 , the hybrid redirection component 62:

[0073] An inner sleeve 621, wherein the inner sleeve 621 is disposed in the mounting sleeve 611, and the inner sleeve 621 is movably connected to the mounting sleeve 611 via a fixed connecting rod 64;

[0074] An L-shaped connecting rod 622, one end of which is fixedly connected to the inner wall of the inner sleeve 621, and the other end of which is connected to a redirecting block 623, and the redirecting block 623 is movably connected to the mixing assembly 63;

[0075] A groove 624 is provided below the inner sleeve 621 , and the groove 624 is movably connected to the mixing assembly 63 .

[0076] For further information, see Figures 1 to 9 , the mixing assembly 63 comprises:

[0077] A redirecting rod 631, wherein the redirecting rod 631 is movably connected to the redirecting block 623 and the groove 624, and the redirecting rod 631 is fixedly connected to the connecting plate 632;

[0078] The connecting rod 633 is arranged on the other side of the connecting plate 632 , one end of the connecting rod 633 is fixedly connected to the connecting plate 632 , the connecting rod 633 is movably connected to the through hole 612 , and the other end of the connecting rod 633 is fixedly connected to the mixing element 634 .

[0079] In this embodiment, the electric rotating shaft 5 is started, the electric rotating shaft 5 drives the installation sleeve 611 to rotate, the installation sleeve 611 drives the connecting rod 633 to rotate through the through hole 612, and the connecting rod 633 drives the mixing element 634 to rotate, so as to achieve the mixing of the molten steel and the different alloy elements added in batches;

[0080] At the same time, the connecting rod 633 drives the connecting plate 632 to rotate, and the connecting plate 632 drives the redirecting rod 631 to rotate, and the redirecting rod 631 rotates about the inner sleeve 621. Since the inner wall of the inner sleeve 621 is provided with a redirecting block 623, the redirecting block 623 is set to a triangular structure, so that a groove 624 is formed between the redirecting block 623 and the inner sleeve 621, so that when the redirecting rod 631 moves to the redirecting block 623, since the redirecting rod 631 is provided with two groups, one group of redirecting rods 631 enters the groove 624, and the other group of redirecting rods 631 passes under the redirecting block 623. At this time, since the movement trajectories of the two groups of redirecting rods 631 are inconsistent, the redirecting rod 631 can drive the movement direction of the mixing piece 634 to change, thereby forming a better mixing effect and improving the mixing effect of the molten steel and different alloy elements added in batches.

[0081] The working principle of the present invention is:

[0082] Since the redirecting groove 424 is set to a V-shaped structure, and the redirecting groove 424 is set below the limit rod 422, and the number of the limit rods 422 is consistent with the number of the redirecting grooves 424, the limit rod 422 can change the position of the limit rod 422 when it contacts the redirecting groove 424 downward, so that the limit rod 422 is moved from the original position to the adjacent limit block 432. At this time, the number of the limit blocks 432 is consistent with the number of the redirecting grooves 424, so that the limit rod 42 can be fixed by the adjacent limit blocks 432. At this time, the limit block 432 is pushed by the limit rod 422, so that the limit block 432 drives the rotating ring 431 to rotate. At this time, the rotating ring 431 drives the partition plate 433 to rotate, and the partition plate 433 rotates, so that alloy materials placed differently can fall into the smelting cylinder box 1 through the opening on the fixed disk 41.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing high-performance die steel, comprising a smelting cylinder box, a feeding and distributing mechanism, an electric rotating shaft and a mixing mechanism, characterized in that: The following steps are also included: Step 1: placing a variety of alloys in the feed and distribution mechanism, setting an opening on the side of the feed and distribution mechanism, and setting the feed and distribution mechanism at an angle; Step 2: Place the opening on the side of the feed and distribution mechanism at the opening of the smelting cylinder box, and multiple alloys fall into the smelting cylinder box in different orders; Step 3: The mixing mechanism is installed in the smelting cylinder box through an electric rotating shaft. Various alloys are mixed with the basic molten steel through the mixing mechanism, and the smelting is completed in the smelting cylinder box.

2. The method for preparing high performance mold steel according to claim 1, characterized in that: The feeding and dividing mechanism is arranged on an inclined mounting plate, the inclined mounting plate is fixedly connected to an L-shaped support rod, the L-shaped support rod is arranged on one side of the smelting cylinder box body, the feeding and dividing mechanism comprises a fixed disk, a rotating assembly and a partition assembly, the fixed disk is fixedly connected to the inclined mounting plate, an opening is arranged on one side of the fixed disk, the rotating assembly is arranged at a central position in the fixed disk, the rotating assembly is movably connected to the partition assembly, the rotating assembly and the partition assembly are arranged in the fixed disk, the rotating assembly is connected to the inclined mounting plate, and the partition assembly is movably connected to the inclined mounting plate.

3. The method for preparing high performance mold steel according to claim 2, characterized in that: The rotating assembly comprises: A pressing adjustment member, wherein the pressing adjustment member is arranged at a central position in the fixed disk, and a spring is arranged inside the pressing adjustment member; A limiting rod, wherein the limiting rod is fixedly connected to the pressing and adjusting member, and the limiting rod is evenly distributed around the circumference of the pressing and adjusting member; A limiting ring, wherein the limiting ring is arranged on the inclined mounting plate and is fixedly connected to the inclined mounting plate; A redirection groove, wherein the redirection groove is arranged on the limiting circular ring, the redirection groove is evenly distributed about the circumference of the limiting circular ring, and the redirection groove is movably connected to the limiting rod.

4. The method for preparing high performance mold steel according to claim 3, characterized in that: The partition assembly comprises: A rotating ring, the rotating ring being movably connected to the top plate of the fixed disk, a limiting block being arranged inside the rotating ring, the limiting blocks being evenly distributed about the circumference of the inner wall of the rotating ring, and the limiting blocks being movably connected to the limiting rod; A partition plate, wherein the partition plate is fixedly connected to the outer wall of the rotating ring, the partition plates are evenly distributed around the circumference of the outer wall of the rotating ring, and the partition plates are movably connected to the inclined mounting plate.

5. The method for preparing high performance mold steel according to claim 1, characterized in that: The mixing mechanism comprises: A mixing installation component, wherein the mixing installation component is connected to the smelting cylinder box body via an electric rotating shaft, the mixing installation component is movably connected to the electric rotating shaft, a mixing redirection component is arranged inside the mixing installation component, and the mixing redirection component is connected to the mixing installation component via a fixed connecting rod; A mixing assembly is movably connected to the mixing redirection assembly, and the mixing assembly passes through the mixing installation assembly.

6. The method for preparing high performance die steel according to claim 5, characterized in that: The hybrid installation assembly comprises: A mounting sleeve, wherein the mounting sleeve is disposed in the smelting cylinder housing, the mounting sleeve is connected to the smelting cylinder housing via an electric rotating shaft, and the mounting sleeve is movably connected to the electric rotating shaft; A through hole is provided on the side of the mounting sleeve, and the through hole is movably connected to the mixing assembly.

7. The method for preparing high performance mold steel according to claim 6, characterized in that: The hybrid redirection assembly: An inner sleeve, wherein the inner sleeve is disposed in the mounting sleeve and the inner sleeve is movably connected to the mounting sleeve via a fixed connecting rod; An L-shaped connecting rod, one end of which is fixedly connected to the inner wall of the inner sleeve, and the other end of which is connected to a redirecting block, and the redirecting block is movably connected to the mixing assembly; A groove is provided below the inner sleeve and is movably connected to the mixing assembly.

8. The method for preparing high performance mold steel according to claim 7, characterized in that: The mixing assembly comprises: A redirecting rod, the redirecting rod is movably connected to the redirecting block and the groove, and the redirecting rod is fixedly connected to the connecting plate; A connecting rod is arranged on the other side of the connecting plate, one end of the connecting rod is fixedly connected to the connecting plate, the connecting rod is movably connected to the through hole, and the other end of the connecting rod is fixedly connected to the mixing piece.

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