A composite material stir-molding device

Abstract

The application provides a composite material stirring molding device, which comprises a feeding mechanism, a molding mold and an annular net. The molding mold comprises a base, a molding center shaft, a molding outer tube body, an electric heating rod and a cooling assembly. After a kaolin-activated carbon mixture is injected between the annular net and the molding center shaft, the electric heating rod uniformly heats the inside of the filter core embryo. When the filter core embryo is heated and expanded, the volume of the filter core embryo is increased, and the expanded part is filled to the edge and the periphery of the annular net hole. With the further expansion of the filter core embryo, the filter core embryo generates a certain pressure on the annular net, so that the filter core embryo and the annular net form close physical contact and mechanical occlusion. In the process of the expansion of the filter core embryo, the binder in the filter core embryo also flows and fills the contact part of the annular net and the filter core embryo, so that the mixture and the annular net are firmly bonded together, thereby realizing the connection and fixation of the filter core embryo and the annular net during the molding of the filter core embryo, and improving the processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment, and in particular to a composite material mixing and molding device. Background Technology

[0002] In the manufacturing of automotive oil filters, traditional filters mostly use conventional materials such as filter paper and glass fiber. These materials are increasingly failing to meet the demands of modern high-performance engines in terms of filtration efficiency and lifespan. In recent years, using a kaolin-activated carbon mixture to manufacture oil filters has become a new development direction. Kaolin-activated carbon mixture filters possess excellent adsorption properties and filtration effects, effectively removing impurities and harmful substances from the oil, thereby extending the oil's lifespan and ensuring stable engine operation.

[0003] However, existing oil filter elements made from kaolin-activated carbon mixtures have the following shortcomings:

[0004] 1. Traditional kaolin-activated carbon hybrid filter cartridges are only a single hybrid structure without the support and fixation of an outer mesh. This makes the filter cartridges prone to deformation and cracking during actual use, which seriously affects their filtration performance and service life.

[0005] 2. In the existing technology, the kaolin-activated carbon mixture filter element is formed by first casting and cooling, and then the external support net is installed on the filter element. This process is not only cumbersome, but also has the problem of the external support net not being firmly fixed.

[0006] 3. Traditional mold cooling methods are mostly uniform or rapid cooling, which cannot effectively balance the relationship between cooling rate and internal stress of filter element. This often leads to stress concentration inside the filter element, resulting in cracks or deformation, reducing the production efficiency and yield of filter element. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] To address the aforementioned problems in the prior art, the present invention provides a composite material mixing and molding apparatus.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0011] A composite material mixing and molding device includes a feeding mechanism, a molding die, and a ring mesh;

[0012] The molding die includes a base, a molding central shaft, a molding outer tube, an electric heating rod, and a cooling assembly;

[0013] The base is provided with lifting grooves corresponding to the forming central shaft and the forming outer tube. The forming central shaft and the forming outer tube are coaxially arranged, and a forming cavity is formed between the forming central shaft and the forming outer tube. The bottom of the forming central shaft and the forming outer tube are both connected to a lifting cylinder to control their lifting.

[0014] The electric heating rod is embedded in the molding center shaft;

[0015] The molded outer tube body is provided with an annular cavity, and the cooling component is installed in the annular cavity;

[0016] The ring-shaped mesh is installed inside the molding cavity.

[0017] Preferably, the ring network includes an inner network body and an outer network body;

[0018] The top and bottom of the inner mesh body are provided with outwardly extending outer edge protrusions;

[0019] The outer mesh body is fitted onto the inner mesh body. An adjustment rod is provided on the top of the outer mesh body. An adjustment groove corresponding to the adjustment rod is protruding from the outer edge of the top of the inner mesh body. When the adjustment rod is located at the beginning of the adjustment groove, the filters on the inner and outer mesh bodies are staggered. When the adjustment rod is located at the end of the adjustment groove, the filters on the inner and outer mesh bodies are overlapped.

[0020] Preferably, the top of the ring net is provided with an adjustment mechanism, which includes a lifting component, a rotating component, a drive shaft, and an adjustment plate;

[0021] The lifting end of the lifting assembly is connected to the rotating assembly;

[0022] The rotating end of the rotating assembly is connected to the drive shaft;

[0023] The adjustment plate is connected to the bottom of the drive shaft;

[0024] The adjustment plate has adjustment holes corresponding to the adjustment rod.

[0025] Preferably, a limiting rod is provided on the raised bottom surface of the outer edge of the inner mesh body, and a limiting groove corresponding to the limiting rod is provided on the surface of the base.

[0026] Preferably, the cooling assembly includes a cooling coil, a three-way valve, an insulation box, a cooling box, a first circulation pump, a second circulation pump, and a heating coil;

[0027] The cooling coil is installed inside the annular cavity, and the three-way valve is installed at both the inlet and outlet ends of the cooling coil.

[0028] A first circulation loop is connected to the first inlet of the two three-way valves, and a second circulation loop is connected to the second inlet of the two three-way valves.

[0029] The heat preservation box, the first circulation pump, and the heating coil are all installed on the first circulation loop, and the heating coil is installed in the lifting groove corresponding to the forming center shaft.

[0030] The cooling box and the second circulation pump are both installed in the second circulation loop.

[0031] Preferably, the feeding mechanism is a screw conveyor, and the discharge port of the screw conveyor is a conical shell structure that is larger at the top and smaller at the bottom. A limiting rod corresponding to the forming center axis is provided inside the conical shell. One end of the limiting rod is connected to the inner wall of the conical shell through a connecting rod. The gap between the discharge port at the bottom of the conical shell structure and the limiting rod corresponds to the forming cavity.

[0032] Preferably, the bottom of the formed outer tube is provided with an outwardly extending annular connecting plate, a guide rod is vertically arranged in the lifting groove, and a guide hole corresponding to the guide rod is opened on the annular connecting plate.

[0033] Preferably, it also includes a rotating mechanism, wherein a plurality of the forming molds are arranged in a circular array on the rotating platform of the rotating mechanism, and the rotating mechanism rotates the forming molds one by one to below the feeding mechanism.

[0034] (III) Beneficial Effects

[0035] The beneficial effects of this invention are as follows:

[0036] 1. After the kaolin-activated carbon mixture is injected between the annular mesh and the forming center shaft, the electric heating rod uniformly heats the inside of the filter element blank. When the filter element blank expands due to heat, its volume increases, and the expanded part fills the edges and surrounding areas of the annular mesh. As the filter element blank expands further, it exerts a certain pressure on the annular mesh, forming a tight physical contact between the filter element blank and the annular mesh, resulting in mechanical interlocking. This interlocking effect restricts the movement of the filter element blank, thus achieving initial fixation between the two. During the process of thermal expansion, the binder inside the filter element blank also flows and fills the contact area between the annular mesh and the filter element blank. Under the cooling effect of the cooling components inside the forming outer tube, the binder undergoes a chemical reaction or physical change and solidifies, forming an adhesive force that firmly bonds the mixture to the annular mesh. This achieves the connection and fixation between the filter element blank and the annular mesh while the filter element blank is being formed, saving processing steps for the oil filter element and improving processing efficiency.

[0037] 2. By employing a combination of inner and outer mesh bodies, when the kaolin-activated carbon mixture is poured into the annular mesh and forming center shaft, the filter screens on the inner and outer mesh bodies are staggered, which reduces the mesh size on the annular mesh and prevents the mixture from overflowing out of the annular mesh. After the kaolin-activated carbon mixture is formed in the annular mesh, the outer surface of the filter element blank will solidify first under natural cooling. Then, by adjusting the rod, the filter screens on the inner and outer mesh bodies are overlapped, increasing the mesh size on the annular mesh. Then, by heating it with an electric heating rod, the annular mesh and the filter element blank are expanded and connected. This not only prevents the kaolin-activated carbon mixture from overflowing out of the annular mesh, but also does not affect its thermal expansion.

[0038] 3. The cooling component first slightly cools down the kaolin-activated carbon mixture and then performs a large-scale cooling, which allows the overall temperature of the mixture to gradually decrease, thus avoiding excessive temperature gradients caused by rapid cooling. By first slightly cooling down the mixture to allow it to initially solidify and release some stress, and then performing a large-scale cooling to complete the final solidification, this method helps to reduce stress concentration within the filter element. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the external support mesh structure for the kaolin-activated carbon mixture filter element in the background technology.

[0040] Figure 2 This is a schematic diagram of a composite material mixing and molding device;

[0041] Figure 3 This is a schematic diagram of the molding die;

[0042] Figure 4 This is a schematic diagram of a ring network structure;

[0043] Figure 5 A schematic diagram illustrating the structural changes in the usage status of a ring network;

[0044] Figure 6 A schematic diagram of the adjustment mechanism;

[0045] Figure 7 This is a schematic diagram of the cooling assembly.

[0046] Explanation of reference numerals in the attached figures

[0047] 1. Feeding mechanism;

[0048] 2. Molding mold;

[0049] 21. Base; 22. Molded outer tube; 23. Molding center shaft; 24. Guide rod; 25. Lifting cylinder;

[0050] 3. Ring net;

[0051] 31. Inner mesh body; 32. Outer mesh body; 33. Outer edge protrusion; 34. Adjusting rod; 35. Lifting assembly; 36. Rotating assembly; 37. Drive shaft; 38. Adjusting plate;

[0052] 4. Electric heating rod;

[0053] 5. Cooling components;

[0054] 51. Cooling coil; 52. Three-way valve; 53. Insulation box; 54. Heating coil; 55. First circulation pump; 56. Cooling box; 57. Second circulation pump. Detailed Implementation

[0055] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] Please refer to Figures 1 to 3 The present invention provides a composite material mixing and molding device, including a feeding mechanism 1, a molding die 2 and a ring mesh 3;

[0057] The molding die 2 includes a base 21, a molding central shaft 23, a molding outer tube 22, an electric heating rod 4, and a cooling assembly 5;

[0058] The base 21 has a lifting groove corresponding to the forming center shaft 23 and the forming outer tube 22. The forming center shaft 23 and the forming outer tube 22 are coaxially arranged, and a forming cavity is formed between the forming center shaft 23 and the forming outer tube 22. The bottom of the forming center shaft 23 and the forming outer tube 22 are both connected to a lifting cylinder 25 to control their lifting.

[0059] The electric heating rod 4 is embedded in the molding center shaft 23;

[0060] An annular cavity is provided inside the molded outer tube 22, and a cooling component 5 is installed inside the annular cavity;

[0061] The ring mesh 3 is installed inside the forming cavity;

[0062] In use, the kaolin-activated carbon mixture is injected into the space between the annular mesh 3 and the forming central shaft 23 via the feeding mechanism 1, forming an annular tubular filter element blank. The filter element blank is then heated uniformly by the driven electric heating rod 4. As the filter element blank expands due to heat, its volume increases, and the expanded portion fills the edges and surrounding areas of the annular mesh 3's pores. With further expansion, the filter element blank exerts pressure on the annular mesh 3, creating a tight physical contact and mechanical interlocking between the filter element blank and the annular mesh 3. The action restricts the movement of the filter element blank, thus achieving initial fixation between the two. During the process of thermal expansion of the filter element blank, the binder inside the filter element blank also flows and fills the part where the annular mesh 3 contacts the filter element blank. Under the cooling action of the cooling component 5 inside the molded outer tube 22, the binder undergoes a chemical reaction or physical change and solidifies, forming an adhesive force that firmly bonds the mixture to the annular mesh 3. This achieves the connection and fixation between the filter element blank and the annular mesh 3 while the filter element blank is being formed, saving the processing steps of the oil filter element and improving processing efficiency.

[0063] After the oil filter element is formed, the forming center shaft 23 and the forming outer tube 22 are driven by the lifting cylinder 25 to retract into the lifting groove, thereby realizing the demolding process of the oil filter element.

[0064] refer to Figure 4 and Figure 5 In this embodiment, the ring mesh 3 includes an inner mesh body 31 and an outer mesh body 32;

[0065] The top and bottom of the inner mesh body 31 are provided with outwardly extending outer edge protrusions 33;

[0066] The outer mesh body 32 is fitted onto the inner mesh body 31. An adjustment rod 34 is provided on the top of the outer mesh body 32. An adjustment groove corresponding to the adjustment rod 34 is provided on the outer edge protrusion 33 of the top of the inner mesh body 31. When the adjustment rod 34 is located at the beginning end of the adjustment groove, the filters on the inner mesh body 31 and the outer mesh body 32 are staggered. When the adjustment rod 34 is located at the end of the adjustment groove, the filters on the inner mesh body 31 and the outer mesh body 32 are overlapped.

[0067] In the processing steps of the above-described embodiment one, when the kaolin-activated carbon mixture is injected between the annular mesh 3 and the molding central shaft 23, the following problem may occur:

[0068] When the mesh size on the annular mesh 3 is too large, when the kaolin-activated carbon mixture is injected between the annular mesh 3 and the molding center shaft 23, the mixture will overflow out of the annular mesh 3. If the mesh size on the annular mesh 3 is too small, although the mixture can be prevented from overflowing out of the annular mesh 3, the mixture will be hindered by the pore walls when it expands, and cannot expand freely, thus accumulating stress inside the mixture.

[0069] Therefore, in this embodiment, an inner mesh body 31 and an outer mesh body 32 are combined. When the kaolin-activated carbon mixture is poured into the annular mesh 3 and the forming center shaft 23, the filter screens on the inner mesh body 31 and the outer mesh body 32 are staggered, which reduces the mesh size on the annular mesh 3 and prevents the mixture from overflowing out of the annular mesh 3. After the kaolin-activated carbon mixture is formed in the annular mesh 3, the outer surface of the filter element blank will solidify first under the action of natural cooling. Then, the filter screens on the inner mesh body 31 and the outer mesh body 32 are overlapped by the adjusting rod 34 to increase the mesh size on the annular mesh 3. Then, the an electric heating rod 4 is used to heat and expand it to achieve the expansion connection between the annular mesh 3 and the filter element blank.

[0070] refer to Figure 6 In this embodiment, an adjustment mechanism is provided at the top of the ring net 3. The adjustment mechanism includes a lifting component 35, a rotating component 36, a drive shaft 37, and an adjustment plate 38.

[0071] The lifting end of the lifting assembly 35 is connected to the rotating assembly 36;

[0072] The rotating end of the rotating component 36 is connected to the drive shaft 37;

[0073] The bottom of the drive shaft 37 is connected to the adjustment plate 38;

[0074] The adjusting plate 38 has adjusting holes corresponding to the adjusting rod 34;

[0075] Among them, a limit rod is provided on the bottom surface of the outer edge protrusion 33 of the inner mesh body 31, and a limit groove corresponding to the limit rod is provided on the surface of the base 21.

[0076] In use, the bottom of the inner mesh body 31 is connected to the base 21 via a limiting rod. The lifting component 35 drives the rotating component 36 to move downward, so that the adjusting plate 38 on the drive shaft 37 engages with the adjusting rod 34 on the annular mesh 3. The rotating component 36 drives the adjusting plate 38 to rotate, thereby controlling the movement of the adjusting rod 34.

[0077] refer to Figure 7 In this embodiment, the cooling assembly 5 includes a cooling coil 51, a three-way valve 52, an insulation box 53, a cooling box 56, a first circulation pump 55, a second circulation pump 57, and a heating coil 54.

[0078] The cooling coil 51 is installed in the annular cavity, and a three-way valve 52 is installed at both the inlet and outlet of the cooling coil 51.

[0079] The first inlet of the two three-way valves 52 is connected to a first circulation loop, and the second inlet of the two three-way valves 52 is connected to a second circulation loop.

[0080] The heat preservation box 53, the first circulation pump 55 and the heating coil 54 are all set on the first circulation loop, and the heating coil 54 is set in the lifting groove corresponding to the forming center shaft 23;

[0081] The cooling box 56 and the second circulation pump 57 are both installed in the second circulation loop;

[0082] In use, after the oil filter element is formed, the forming center shaft 23 retracts into the lifting groove, heating the heating coil 54 in the first circulation loop. In conjunction with the first circulation pump 55, the first circulation loop achieves thermal circulation, realizing a small-scale cooling of the filter element blank inside the formed outer tube 22. The small-scale cooling allows heat to be conducted more evenly from the inside of the filter element blank to the outside, thereby avoiding uneven shrinkage caused by rapid cooling. The small-scale cooling also helps to reduce thermal shock and prevent the generation of micro-cracks inside the material caused by sudden temperature changes. After the first circulation loop cools for 10-30 minutes, the second circulation loop is used to significantly cool the filter element blank. The small-scale cooling followed by the significant cooling allows the overall temperature of the mixture to gradually decrease, thereby avoiding excessive temperature gradients caused by rapid cooling. By first slightly cooling the mixture to initially solidify and release some stress, and then significantly cooling it to complete the final solidification, this method helps to reduce stress concentration inside the filter element.

[0083] In this embodiment, the feeding mechanism 1 adopts a screw conveyor. The discharge port of the screw conveyor is a conical shell structure with a larger top and a smaller bottom. A limiting rod corresponding to the forming center axis 23 is provided inside the conical shell. One end of the limiting rod is connected to the inner wall of the conical shell through a connecting rod. The gap between the discharge port at the bottom of the conical shell structure and the limiting rod corresponds to the forming cavity.

[0084] In this embodiment, the bottom of the formed outer tube 22 is provided with an outwardly extending annular connecting plate, and a guide rod 24 is vertically arranged in the lifting groove. The annular connecting plate is provided with a guide hole corresponding to the guide rod 24.

[0085] In this embodiment, a rotating mechanism is also included. Multiple forming molds 2 are arranged in a circular array on the rotating platform of the rotating mechanism. The rotating mechanism rotates the forming molds 2 one by one to the bottom of the feeding mechanism 1.

[0086] The working principle of this invention is as follows:

[0087] The kaolin-activated carbon mixture is injected into the space between the annular mesh 3 and the forming central shaft 23 via the feeding mechanism 1, forming an annular tubular filter element blank. The filter element blank is then heated uniformly by the driven electric heating rod 4. As the filter element blank expands due to heat, its volume increases, and the expanded portion fills the edges and surrounding areas of the annular mesh 3's pores. With further expansion, the filter element blank exerts pressure on the annular mesh 3, creating a tight physical contact and mechanical interlocking between them. This interlocking restricts the movement of the filter element blank, thus achieving initial fixation. During the thermal expansion process, the binder inside the filter element blank also flows and fills the contact area between the annular mesh 3 and the filter element blank. Under the cooling effect of the cooling component 5 inside the forming outer tube 22, the binder undergoes a chemical reaction or physical change and solidifies, forming an adhesive force that firmly bonds the mixture to the annular mesh 3. This achieves simultaneous forming of the filter element blank and its connection and fixation to the annular mesh 3, saving processing steps in the oil filter element process and improving processing efficiency.

[0088] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A composite material mixing and molding device, characterized in that, This includes the feeding mechanism, forming mold, and ring mesh; The molding die includes a base, a molding central shaft, a molding outer tube, an electric heating rod, and a cooling assembly; The base is provided with a lifting groove corresponding to the forming central shaft and the forming outer tube. The forming central shaft and the forming outer tube are coaxially arranged, and a forming cavity is formed between the forming central shaft and the forming outer tube. The bottom of the forming central shaft and the forming outer tube are both connected to a lifting cylinder to control their lifting. The electric heating rod is embedded in the molding center shaft; The molded outer tube body is provided with an annular cavity, and the cooling component is installed in the annular cavity; The ring-shaped mesh is installed inside the molding cavity.

2. The composite material mixing and molding device according to claim 1, characterized in that, The ring network includes an inner network body and an outer network body; The top and bottom of the inner mesh body are provided with outwardly extending outer edge protrusions; The outer mesh body is fitted onto the inner mesh body. An adjustment rod is provided on the top of the outer mesh body. An adjustment groove corresponding to the adjustment rod is protruding from the outer edge of the top of the inner mesh body. When the adjustment rod is located at the beginning of the adjustment groove, the filters on the inner and outer mesh bodies are staggered. When the adjustment rod is located at the end of the adjustment groove, the filters on the inner and outer mesh bodies are overlapped.

3. The composite material mixing and molding device according to claim 2, characterized in that, The top of the ring net is provided with an adjustment mechanism, which includes a lifting component, a rotating component, a drive shaft, and an adjustment plate. The lifting end of the lifting assembly is connected to the rotating assembly; The rotating end of the rotating assembly is connected to the drive shaft; The adjustment plate is connected to the bottom of the drive shaft; The adjustment plate has adjustment holes corresponding to the adjustment rod.

4. The composite material mixing and molding device according to claim 3, characterized in that, The bottom outer edge of the inner mesh body is provided with a limit rod, and the base surface is provided with a limit groove corresponding to the limit rod.

5. The composite material mixing and molding device according to claim 1, characterized in that, The cooling assembly includes a cooling coil, a three-way valve, an insulation box, a cooling box, a first circulation pump, a second circulation pump, and a heating coil; The cooling coil is installed inside the annular cavity, and the three-way valve is installed at both the inlet and outlet ends of the cooling coil. A first circulation loop is connected to the first inlet of the two three-way valves, and a second circulation loop is connected to the second inlet of the two three-way valves. The heat preservation box, the first circulation pump, and the heating coil are all installed on the first circulation loop, and the heating coil is installed in the lifting groove corresponding to the forming center shaft. The cooling box and the second circulation pump are both installed in the second circulation loop.

6. The composite material mixing and molding device according to claim 1, characterized in that, The feeding mechanism adopts a screw conveyor. The discharge port of the screw conveyor is a conical shell structure that is larger at the top and smaller at the bottom. A limiting rod corresponding to the forming center axis is provided inside the conical shell. One end of the limiting rod is connected to the inner wall of the conical shell through a connecting rod. The gap between the discharge port at the bottom of the conical shell structure and the limiting rod corresponds to the forming cavity.

7. The composite material mixing and molding device according to claim 1, characterized in that, The bottom of the formed outer tube is provided with an outwardly extending annular connecting plate, and a guide rod is vertically arranged in the lifting groove. The annular connecting plate is provided with a guide hole corresponding to the guide rod.

8. The composite material mixing and molding device according to claim 1, characterized in that, It also includes a rotating mechanism, on which a plurality of the forming molds are arranged in a circular array on the rotating platform of the rotating mechanism, and the rotating mechanism rotates the forming molds one by one to below the feeding mechanism.

Images