Filter cartridge processing method

Abstract

The application belongs to the technical field of filter, and particularly relates to a filter element processing method, which comprises the following steps: setting a filter element positioning jig, sequentially placing a gasket, a rubber sheet and a filter element into the filter element positioning jig, and the central axes of the gasket, the rubber sheet and the filter element coincide with each other; the filter element has oppositely arranged first and second ends, the first end of the filter element is extruded so that the second end of the filter element is tightly attached to the rubber sheet; the filter element positioning jig is heated to melt the rubber sheet; the first end of the filter element is extruded again, the second end of the filter element extrudes the melted rubber sheet, the melted rubber sheet penetrates into the second end of the filter element, and the gasket is pasted to the melted rubber sheet so that the gasket is fixed on the second end of the filter element; the filter element is pressed twice, the adhesion degree of each folding part of the filter element to the rubber sheet is the same, the flatness is improved, and the quality of the filter element is improved.

Description

Technical Field

[0001] This invention belongs to the field of filter technology, and in particular relates to a method for processing filter elements. Background Technology

[0002] An oil filter is used to remove impurities from engine oil to protect the engine. It is usually installed on an oil filter mounting bracket in the engine. An oil filter consists of a housing and a filter element housed within the housing. Engine oil enters radially from the chamber between the filter element and the housing (oil inlet chamber) and enters the chamber inside the filter element (oil outlet chamber) to achieve oil filtration. The filter element typically consists of cylindrical filter paper and end caps. The end caps are located at the ends of the cylindrical filter paper. Because the filter paper is relatively soft and structurally unstable, it is prone to bending and deformation when subjected to excessive force, severely affecting filtration quality. Current filter element manufacturing methods involve first placing the cylindrical filter paper and end caps into a hot press mold. The hot press mold applies pressure and heat, causing the side of the end cap facing the cylindrical paper core to melt and bond with it. The cylindrical paper core is prone to deformation due to uneven stress, and the uneven end face after deformation results in an uneven bond between the cylindrical paper core and the end cap, affecting the filtration effect. Summary of the Invention

[0003] The purpose of this invention is to provide a filter element processing method, which aims to solve the technical problem of uneven end processing of filter elements in the prior art.

[0004] To achieve the above objectives, an embodiment of the present invention provides a filter element processing method, comprising the following steps:

[0005] S100: Set up a filter element positioning fixture, and place the gasket, film and filter element in the filter element positioning fixture in sequence, with the central axes of the gasket, film and filter element coinciding with each other;

[0006] S200: The filter element has a first end and a second end that are disposed opposite to each other, and the first end of the filter element is squeezed so that the second end of the filter element is in close contact with the film;

[0007] S300: The filter element positioning fixture is heated to melt the film;

[0008] S400: Squeeze the first end of the filter element again, and squeeze the melted film at the second end of the filter element so that the melted film penetrates into the second end of the filter element and adheres to the gasket so that the gasket is fixed at the second end of the filter element.

[0009] Optionally, in step S100, the circumferential sidewall of the filter element is shaped and positioned.

[0010] Optionally, a filter element positioning mold base is provided, the filter element positioning mold base including a base, a bracket and a clamping plate. The top surface of the base is provided with a positioning part, the filter element positioning fixture is disposed in the positioning part, the bracket is connected to the base, the clamping plate is connected to the bracket and is disposed above the base, the clamping plate is provided with a through hole adapted to the shape of the filter, the through hole is disposed opposite to the positioning part, and the filter element passes through the through hole.

[0011] Optionally, a two-stage pressing mechanism is provided, which includes a first pressing component and a second pressing component. In step S200, the first pressing component presses the first end of the filter element, and in step S400, the second pressing component presses the first end of the filter element.

[0012] Optionally, the first pressing assembly includes a positioning plate, a pressing block, and a first driving assembly. The first driving assembly is connected to the lower press base, and its output end is connected to the positioning plate and used to drive the positioning plate to move downward. The pressing block is movably connected to the positioning plate and can move up and down. The bottom end of the pressing block extends downward to form a pressing section. The second pressing assembly includes a mounting plate and a second driving assembly. The mounting plate is connected to the output end of the first driving assembly, and the second driving assembly is connected to the mounting plate to push the pressing block to move downward.

[0013] Optionally, in step S400, the filter element positioning fixture is squeezed to move the filter element positioning fixture toward the second end of the filter element.

[0014] Optionally, in step S100, two filter element positioning fixtures are provided, one of which is located at the first end of the filter element and the other is located at the second end of the filter element.

[0015] Optionally, in step S400, the filter element is continuously squeezed for a preset time, and after the preset time, the filter element is released and cooled.

[0016] Optionally, a heating mechanism is provided, and a cooling mechanism is provided on the side of the heating mechanism; a filter element positioning mold base is provided for fixing the filter element positioning fixture, and the filter element positioning mold base slides between the heating mechanism and the cooling mechanism.

[0017] Optionally, an exhaust system is provided on one side of the cooling mechanism.

[0018] The filter element processing method provided in this invention has at least one of the following technical effects: A gasket, a film, and a filter element are placed sequentially. First, the first end of the filter element is squeezed. The second end of the filter element and a filter element positioning fixture cooperate to press down the gasket and the film. The filter element positioning fixture is heated, and the film gradually melts and begins to adhere to the second end of the filter element. At this time, the first end of the filter element is squeezed again, and the second end of the filter element is squeezed again by the melted film. One side of the film completely adheres to the end of the filter element. Furthermore, the gasket is adhered to the other side of the film. After the film melts, it adheres to the end face of the filter element to form an end cap. This gasket can enhance the strength of the end cap, thereby improving the filter element's resistance to deformation. In this embodiment, a two-stage pressurization method is used. The first pressurization is used to fix the gasket, film, and filter element. After the film melts, the flatness of both sides of the film is high, which greatly improves the overlap between the end faces of the film and the filter element. The force exerted by the film on the end face of the filter element is uniform. When the filter element is squeezed again, the adhesion between each fold of the filter element and the film is the same. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the filter element processing steps provided in an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the filter element forming device provided in an embodiment of the present invention.

[0022] Figure 3 This is a front view of the filter element forming apparatus provided in an embodiment of the present invention.

[0023] Figure 4 This is a front view of the two-stage pressing mechanism provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the filter element positioning fixture provided in an embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional view of the filter element positioning fixture provided in an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the filter element positioning mold base provided in an embodiment of the present invention.

[0027] Figure 8 This is an exploded view of the filter element positioning mold provided in an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the filter element provided in an embodiment of the present invention.

[0029] Figure 10 This is an exploded view of a filter element provided in an embodiment of the present invention.

[0030] The following are the labeling elements in the figure:

[0031] 10—Machine base; 20—Filter element positioning mold base; 21—Base

[0032] 22—Bracket 23—Clamping Plate 24—Through Hole

[0033] 25—Filter element positioning fixture; 30—Two-stage pressing mechanism; 31—First pressing assembly

[0034] 32—Second pressing assembly; 33—Lower press base; 40—Cooling mechanism

[0035] 50—Heating mechanism; 60—Exhaust mechanism; 100—Filter element

[0036] 101—Film; 102—Washer; 250—Jig Body

[0037] 251—Positioning groove; 252—Positioning post; 253—First chamfer.

[0038] 254—Second chamfer; 255—Support surface; 256—Third chamfer

[0039] 310—Positioning plate; 311—Pressure block; 312—First drive assembly

[0040] 313—Extrusion section; 320—Mounting plate; 321—Second drive assembly. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figures 1-10 The described embodiments are exemplary and intended to explain embodiments of the invention, and should not be construed as limiting the invention.

[0042] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0045] In one embodiment of the present invention, such as Figures 1-3 As shown, a method for processing a filter element is provided, including the following steps:

[0046] S100: Set up a filter element positioning fixture 25, and place the gasket 102, film 101 and filter element 100 in the filter element positioning fixture 25 in sequence, with the central axes of the gasket 102, film 101 and filter element 100 coinciding with each other;

[0047] S200: The filter element 100 has a first end and a second end that are disposed opposite to each other. The first end of the filter element 100 is squeezed so that the second end of the filter element 100 is in close contact with the film 101.

[0048] S300: The filter element positioning fixture 25 is heated to melt the film 101;

[0049] S400: Squeeze the first end of the filter element 100 again, and squeeze the melted film 101 at the second end of the filter element 100 so that the melted film 101 penetrates into the second end of the filter element 100 and adheres to the gasket 102 so that the gasket 102 is fixed at the second end of the filter element 100.

[0050] In this embodiment of the invention, a washer 102, a film 101, and a filter element 100 are placed sequentially. First, the first end of the filter element 100 is squeezed. The second end of the filter element 100 and the filter element positioning fixture 25 cooperate to press the washer 102 and the film 101. The filter element positioning fixture 25 is heated, and the film 101 gradually melts and begins to adhere to the second end of the filter element 100. At this time, the first end of the filter element 100 is squeezed again, and the second end of the filter element 100 is squeezed again against the melted film 101. One side of the film 101 is completely adhered to the end of the filter element 100, and the washer 102 is adhered to the other side of the film 101. After melting, the gasket 101 is bonded to the end face of the filter element 100 to form an end cap. The gasket 102 can enhance the strength of the end cap to improve the deformation resistance of the filter element 100. In this embodiment, a two-stage pressurization method is adopted. The first pressurization is used to fix the gasket 102, the film 101 and the filter element 100. After the film 101 melts, the flatness of both sides of the film 101 is high, which greatly improves the overlap between the end faces of the film 101 and the filter element 100. The force of the film 101 acting on the end face of the filter element 100 is uniform. When the filter element 100 is squeezed again, the adhesion degree between each fold of the filter element 100 and the film 101 is the same.

[0051] In another embodiment of the present invention, in step S100 of the filter element processing method, the circumferential sidewall of the filter element 100 is shaped and positioned. The filter element 100 is relatively soft. When not under force, the outer diameter of the filter element 100 at different positions of its circumferential sidewall is not the same, which causes the end face of the filter element 100 to be uneven, affecting the filtration effect of the filter element 100. The shaping and positioning process is added to apply a force to the middle of the circumferential sidewall of the filter element 100 so that the outer diameters at both ends of the filter element 100 are the same, reducing the cylindricity error of the filter element 100. The shaping and positioning process is performed independently from the positioning process of the filter element positioning fixture 25, which can reduce the size of the filter element positioning fixture 25, facilitate the placement of the filter element 100, reduce the design difficulty of the filter element positioning fixture 25, and reduce the processing cost of the filter element positioning fixture 25.

[0052] In another embodiment of the invention, such as Figures 7-8As shown, the filter element processing method includes a filter element positioning mold base 20, which comprises a base 21, a bracket 22, and a clamping plate 23. The top surface of the base 21 is provided with a positioning part, and the filter element positioning fixture 25 is disposed in the positioning part. The bracket 22 is connected to the base 21, and the clamping plate 23 is connected to the bracket 22 and disposed above the base 21. The clamping plate 23 is provided with a through hole 24 adapted to the shape of the filter, and the through hole 24 is disposed opposite to the positioning part. The filter element 100 passes through the through hole 24.

[0053] In this embodiment of the invention, the filter element 100 is inserted into the through hole 24. The outer side wall of the middle part of the filter element 100 abuts against the inner side wall of the through hole 24 to shape and position the filter element 100. A force is applied to the middle part of the circumferential side wall of the filter element 100 so that the outer diameters at both ends of the filter element 100 are the same, thereby reducing the cylindricity error of the filter element 100.

[0054] In another embodiment of the invention, such as Figure 4 As shown, the filter element processing method of this filter element is provided with a two-stage pressing mechanism 26. The two-stage pressing mechanism 26 includes a first pressing component 31 and a second pressing component 32. In step S200, the first pressing component 31 presses the first end of the filter element 100. In step S400, the second pressing component 32 presses the first end of the filter element 100. The method of applying pressure in two stages is adopted. The first pressing is used to fix the placement gasket 102, the film 101 and the filter element 100. After the film 101 melts, the flatness of both sides of the film 101 is high, which greatly improves the overlap between the end faces of the film 101 and the filter element 100. The force of the film 101 acting on the end face of the filter element 100 is uniform. When the filter element 100 is pressed again, the adhesion degree between each fold of the filter element 100 and the film 101 is the same.

[0055] In another embodiment of the invention, such as Figure 4As shown, in the filter element processing method, the first pressing assembly 31 includes a positioning plate 310, a pressing block 311, and a first driving assembly 312. The first driving assembly 312 is connected to the lower press base 33, and the output end of the first driving assembly 312 is connected to the positioning plate 310 and used to drive the positioning plate 310 to move downward. The pressing block 311 is movably connected to the positioning plate 310 and can move up and down. The bottom end of the pressing block 311 extends downward to form a pressing part 313. The second pressing assembly 32 includes a mounting plate 320 and a second driving assembly. Component 321, the mounting plate 320 is connected to the output end of the first drive assembly 312, and the second drive assembly 321 is connected to the mounting plate 320 to push the pressure block 311 downward; the first drive assembly 312 drives the mounting plate 320 downward, and the squeezing part 313 of the pressure block 311 presses against the second end of the filter element 100. After the film 101 melts, the second drive assembly 321 pushes the pressure block 311, and the force exerted by the squeezing part 313 of the pressure block 311 on the second end of the filter element 100 increases, so that the film 101 is completely adhered to the end of the filter element 100.

[0056] In another embodiment of the present invention, in step S400 of the filter element processing method, the filter element positioning fixture 25 is squeezed so that it moves toward the second end of the filter element 100; the filter element positioning fixture 25 squeezes toward the second end of the filter element 100, and applies equal force to the first end and the second end of the filter element 100 respectively, so that the flatness of the two ends of the formed filter element 100 is improved; further, the two ends of the filter element 100 are gradually squeezed, and the method of heating and pressurizing at the same time is adopted so that the rubber ring melts and is promptly bonded to the end of the filter element 100; secondly, filter element positioning fixtures 25 can be provided at both ends of the filter element 100.

[0057] In another embodiment of the present invention, in step S100 of the filter element processing method, two filter element positioning fixtures 25 are provided, one of which is located at the first end of the filter element 100 and the other is located at the second end of the filter element 100. Both filter element positioning fixtures 25 are provided with gaskets 102 and films 101. The two fixtures 25 are respectively located at both ends of the filter element 100, and both ends of the filter element 100 are processed simultaneously, improving the processing efficiency of the filter element 100. By processing both ends simultaneously, the step of flipping the filter element 100 is avoided, further improving processing efficiency.

[0058] In another embodiment of the present invention, in step S400 of the filter element processing method, the filter element 100 is continuously squeezed for a preset time to make the melted rubber ring adhere more fully. After the preset time is reached, the filter element 100 is released and cooled to allow the melted rubber ring to solidify.

[0059] In another embodiment of the invention, such as Figures 2-3 As shown, the filter element processing method includes a heating mechanism 50 and a cooling mechanism 40 on the side of the heating mechanism 50. A filter element positioning mold 20 is provided for fixing the filter element positioning fixture 25. The filter element positioning mold 20 slides between the heating mechanism 50 and the cooling mechanism 40 to heat or cool the filter element positioning mold 20. Furthermore, cooling mechanisms 40 are provided on both sides of the heating mechanism 50, and two filter element positioning molds 20 are provided, one of which is placed in the heating mechanism 50 and the other is placed in the cooling mechanism 40, further improving processing efficiency.

[0060] In another embodiment of the present invention, a ventilation mechanism 60 is provided on one side of the cooling mechanism 40 in the filter element processing method to improve the ventilation effect, remove odors, and reduce smoke and dust.

[0061] Example 2

[0062] In embodiments of the present invention, such as Figures 2-8 As shown, a filter element forming apparatus is provided, including a machine base 10, and a filter element positioning mold base 20, a moving mechanism, a two-stage pressing mechanism 26, a cooling mechanism 40, and a heating mechanism 50 disposed on the machine base 10; the cooling mechanism 40 and the heating mechanism 50 are spaced apart, and the moving mechanism is connected to the filter element positioning mold base 20 to drive the filter element positioning mold base 20 to slide between the cooling mechanism 40 and the heating mechanism 50; the two-stage pressing mechanism 26 is disposed on one side of the heating mechanism 50, and the two-stage pressing mechanism 26 includes a pressing base 33, a first pressing assembly 31 and a second pressing assembly 32 for pressing the filter element 100 placed on the filter element positioning mold base 20.

[0063] In this embodiment of the invention, the filter element 100, the rubber ring, and the gasket 102 are all placed in the filter element positioning mold base 20. The moving mechanism drives the filter element positioning mold base 20 to move and deliver the filter element positioning mold base 20 to the heating mechanism 50. The first pressing assembly 31 presses the filter element 100, fixing the filter element 100, the rubber ring, and the gasket 102. The heating mechanism 50 heats the filter element 100 to melt the rubber ring. At this time, the second pressing assembly 32 applies pressure to the filter element 100, causing the melted rubber ring to adhere to the end of the filter element 100. After the adhesion is completed, the force on the filter element 100 is removed, and the moving mechanism moves the filter element positioning mold base 20 to the heating mechanism 50. The moving mechanism moves the filter element positioning mold 20 to the cooling mechanism 40 to cool the filter element 100. In this embodiment, a two-stage pressurization method is adopted. The first pressurization is used to fix the placement gasket 102, film 101 and filter element 100. After the film 101 melts, the flatness of both sides of the film 101 is high, which greatly improves the overlap between the end faces of the film 101 and the filter element 100. The force of the film 101 acting on the end face of the filter element 100 is uniform. When the filter element 100 is squeezed again, the adhesion between each fold of the filter element 100 and the film 101 can be the same.

[0064] Specifically, the structure of filter element 100 is as follows: Figures 9-10 As shown.

[0065] In an embodiment of the present invention, the first pressing assembly 31 of the filter element forming device includes a positioning plate 310, a pressing block 311, and a first driving assembly 312. The first driving assembly 312 is connected to the lower press base 33, and the output end of the first driving assembly 312 is connected to the positioning plate 310 and used to drive the positioning plate 310 to move downward. The pressing block 311 is movably connected to the positioning plate 310 and can move up and down. The bottom end of the pressing block 311 extends downward to form a pressing part 313. The second pressing assembly 32 includes a mounting plate 320 and a second pressing assembly 312. A drive assembly 321 is provided, wherein the mounting plate 320 is connected to the output end of the first drive assembly 312, and the second drive assembly 321 is connected to the mounting plate 320 to push the pressure block 311 downward; the first drive assembly 312 drives the mounting plate 320 downward, and the pressing part 313 of the pressure block 311 presses against the second end of the filter element 100. After the film 101 melts, the second drive assembly 321 pushes the pressure block 311, and the force exerted by the pressing part 313 of the pressure block 311 on the second end of the filter element 100 increases, so that the film 101 is completely adhered to the end of the filter element 100.

[0066] In an embodiment of the present invention, the positioning plate 310 of the filter element forming device is provided with a positioning hole, the pressing block 311 is movably connected in the positioning hole, and the top end of the pressing block 311 extends outward to form a limiting protrusion; the outer side wall of the pressing block 311 transitions with the inner side wall of the positioning hole, the mounting plate 320 moves downward, the pressing part 313 of the pressing block 311 contacts the end of the filter element 100, and the filter element 100 is pressed by the weight of the pressing block 311 itself to achieve one pressing; specifically, the pressing block 311 is made of aluminum alloy material.

[0067] Specifically, the pressing block 311 or the positioning plate 310 of the two-stage pressing mechanism 26 is connected to a second heating component for heating. The bottom surface of the extrusion part 313 is provided with an installation groove for placing the film 101. When the film 101 is placed in the installation groove, the pressing block 311 moves to connect the installation groove with the other end of the filter element 100. The second heating component pressing block 311 heats the film 101 in the installation groove, causing it to melt and adhere to the filter element 100. Both ends of the filter element 100 can be processed at the same time, thereby improving production efficiency.

[0068] In an embodiment of the present invention, the first drive assembly 312 of the filter element forming device includes a first cylinder, and the second drive assembly 321 includes a second cylinder; the two-stage pressing mechanism 26 includes a controller and a pressure sensor, the controller being electrically connected to the first cylinder, the second cylinder, and the pressure sensor, and the pressure sensor being connected to the extension end of the second cylinder to measure the pressure on the pressing block 311; both the first drive assembly 312 and the second drive assembly 321 are cylinders, which have the advantages of rapid transmission and fast response. The first cylinder drives the mounting plate 320 to move downward, and the second cylinder pushes the pressing block 311 to move. The pressure sensor is used to detect the pressure on the pressing block 311 and send the pressure information to the controller for monitoring and recording.

[0069] Specifically, the positioning plate 310 of the two-stage pressing mechanism 26 includes an upper positioning plate and a lower positioning plate. The upper positioning plate is connected to the telescopic end of the first cylinder. Multiple connecting rods are provided between the upper positioning plate and the lower positioning plate. The ends of the mounting plate 320 are respectively connected to each of the connecting rods. The mounting plate 320 is located between the upper positioning plate and the lower positioning plate. Each end of the mounting plate 320 is respectively connected to each connecting rod, so that the force is uniform and the sliding is smooth, making the pressing block 311 more stable in pressing.

[0070] Specifically, the two-stage pressing mechanism 26 includes a controller and a pressure sensor. The controller is electrically connected to the first cylinder, the second cylinder, and the pressure sensor. The pressure sensor is connected to the extension end of the second cylinder to measure the pressure on the pressing block 311. The first cylinder drives the mounting plate 320 to move downward, the second cylinder pushes the pressing block 311 to move, and the pressure sensor is used to detect the pressure on the pressing block 311 and send the pressure information to the controller for monitoring and recording.

[0071] Specifically, the pressing base 33 of the two-stage pressing mechanism 26 is provided with multiple guide rods, and the end of the positioning plate 310 is connected to each of the guide rods respectively, thereby improving the movement stability of the positioning plate 310.

[0072] Specifically, the two-stage pressing mechanism 26 has multiple pressing blocks 311, and each pressing block 311 is evenly distributed on the positioning plate 310 to process multiple filter elements 100 at the same time, which greatly increases the processing efficiency of the filter elements 100.

[0073] In an embodiment of the present invention, the filter element positioning mold base 20 of the filter element forming device includes a base 21, a bracket 22, and a clamping plate 23. The top surface of the base 21 is provided with a positioning part for placing the filter element 100. The bracket 22 is connected to the base 21, and the clamping plate 23 is connected to the bracket 22 and is located above the base 21. The clamping plate 23 is provided with a through hole 24 adapted to the shape of the filter element 100. The through hole 24 is connected to the positioning part of the filter element 100. The filter elements 100 are arranged opposite each other. The filter element 100 is relatively soft. When no force is applied, the outer diameter of the filter element 100 is different at different positions of its circumferential sidewall, which causes the end face of the filter element 100 to be uneven, affecting the filtration effect of the filter element 100. The filter element 100 is inserted into the through hole 24. The outer sidewall of the middle part of the filter element 100 abuts against the inner sidewall of the through hole 24, which applies a force to the middle part of the circumferential sidewall of the filter element 100, so that the outer diameters at both ends of the filter element 100 are the same, reducing the cylindricity error of the filter element 100.

[0074] Specifically, the support 22 of the positioning mold of the filter element 100 is provided with a groove, and the ends of the first clamping plate 23 and the second clamping plate 23 are provided with a material clamping part, which is located in the groove; the material clamping parts of the first clamping plate 23 and the second clamping plate 23 are located in the groove, so that the first clamping plate 23 and the second clamping plate 23 are located on the support 22.

[0075] Specifically, the positioning mold of the filter element 100 has multiple clamping plates 23, and the bracket 22 has multiple grooves, with each groove spaced apart in sequence. Multiple clamping plates 23 are provided to fix multiple filter elements 100.

[0076] Specifically, the ends of the first clamping plate 23 and the second clamping plate 23 of the positioning mold of the filter element 100 are also provided with handles for gripping. The handles are connected to the side of the clamping part away from the first clamping plate 23, which makes it easy to pick up and put down and improves convenience.

[0077] In an embodiment of the present invention, the top surface of the positioning part of the filter element positioning mold base 20 is recessed inward to form a cavity, and a filter element 100 positioning mold for fixing the filter element 100 is provided in the cavity; the filter element positioning fixture 25 includes a fixture body 250, the top surface of the fixture body 250 is provided with an upward-opening positioning groove 251, the middle part of the positioning groove 251 is provided with a positioning post 252, the top of the inner sidewall of the positioning groove 251 is provided with a first chamfer 253, the bottom of the inner sidewall of the positioning groove 251 is provided with a second chamfer 254, and a support surface 255 is provided between the first chamfer 253 and the second chamfer 254; the end of the filter element 100 is inserted into the fixture body 250 and placed in the positioning groove 250. In step 51, the bottom surface of the positioning groove 251 abuts against the end face of the filter element 100, and the positioning post 252 extends into the hole in the filter element 100 to achieve primary positioning. The support surface 255 of the positioning groove 251 abuts against the outer wall of the filter element 100 to achieve secondary positioning, thereby improving the connection stability between the fixture body 250 and the filter element 100. The first chamfer 253 is provided to guide the filter element 100 into the positioning groove 251 and to facilitate the removal of the filter element 100 from the fixture body 250. The second chamfer 254 is provided, and the second chamfer 254 and the positioning post 252 cooperate to achieve secondary positioning of the film 101, while making it easier for the end of the filter element 100 to fit against the bottom surface of the positioning groove 251, thereby improving the adhesion effect of the rubber ring.

[0078] Specifically, the positioning groove 251 and the positioning post 252 of the filter element positioning fixture 25 are both circular, so that an annular groove is formed between the inner sidewall of the positioning groove 251 and the outer sidewall of the positioning post 252; the filter element 100 is arranged in an annular structure, the filter element 100 is placed in the positioning groove 251, the positioning post 252 extends into the hole of the filter element 100 and abuts against the inner wall of the hole, so as to perform a positioning of the filter element 100, and the filter element 100 is locked in the annular groove.

[0079] Specifically, the top surface of the positioning post 252 of the filter element positioning fixture 25 is provided with a third chamfer 256. The third chamfer 256 extends along the circumferential direction of the positioning post 252. The third chamfer 256 facilitates the positioning post 252 to extend into the hole of the filter element 100 when the filter element 100 is placed, and plays a guiding role. It can also reduce the damage caused by the collision between the top surface of the positioning post 252 and the end of the filter element 100, and further improve the product quality of the filter element 100.

[0080] Specifically, the support surface 255 of the filter element positioning fixture 25 is inclined outward from the bottom surface of the positioning groove 251 toward the opening of the positioning groove 251. The positioning groove 251 has a structure that is larger at the top and smaller at the bottom. When the filter element 100 is placed into the fixture body 250, the filter element 100 moves along the support surface 255 toward the bottom surface of the positioning groove 251. The inclined support surface 255 facilitates the insertion of the filter element 100. At the same time, when the filter element 100 is pulled out, it can reduce the damage caused by the squeezing of the upper part of the filter element 100 with the support surface 255. It reduces friction and damage to the filter element 100. The reasonable setting of the support surface 255 greatly improves the stability of the filter element 100.

[0081] Specifically, the tilt angle of the filter element positioning fixture 25 is 0.5 to 1.5 degrees, and can be set to 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4 or 1.5 degrees. In this embodiment, the tilt angle is selected based on multiple experiments. It is found that a tilt angle of 0.8 degrees is more effective, which facilitates the insertion of the filter element 100 while maintaining the support force on the filter element 100.

[0082] Specifically, the outer side wall of the fixture body 250 of the filter element positioning fixture 25 is provided with a positioning protrusion, the top surface of which is flush with the top surface of the fixture body 250, and the positioning protrusion is used to position the fixture body 250.

[0083] Specifically, the outer side wall of the fixture body 250 of the filter element positioning fixture 25 is also provided with a snap-fit ​​protrusion. The snap-fit ​​protrusion and the positioning protrusion are spaced apart to form a snap-fit ​​groove for connection between the snap-fit ​​protrusion and the positioning protrusion. Other components are connected to the fixture body 250 through the snap-fit ​​groove, and the structure is stable.

[0084] Specifically, the fixture body 250 of the filter element positioning fixture 25 is an aluminum alloy fixture body 250, which has the advantages of being lightweight and having high strength, and stable performance.

[0085] In an embodiment of the present invention, the positioning mold of the filter element 100 of the filter element forming device includes a fixture body 250. The top surface of the fixture body 250 is provided with an upward-facing positioning groove 251. A positioning post 252 is provided in the middle of the positioning groove 251. The top of the inner sidewall of the positioning groove 251 is provided with a first chamfer 253, and the bottom of the inner sidewall of the positioning groove 251 is provided with a second chamfer 254. A support surface 255 is provided between the first chamfer 253 and the second chamfer 254. The end of the filter element 100 is inserted into the fixture body 250 and placed in the positioning groove 251. The bottom surface of the positioning groove 251 is aligned with the end face of the filter element 100. The positioning post 252 abuts into the hole in the filter element 100 to achieve primary positioning, and the supporting surface 255 of the positioning groove 251 abuts against the outer wall of the filter element 100 to achieve secondary positioning, thereby improving the connection stability between the fixture body 250 and the filter element 100. The first chamfer 253 is provided to guide the filter element 100 into the positioning groove 251 and to facilitate the removal of the filter element 100 from the fixture body 250. The second chamfer 254 is provided, and the second chamfer 254 cooperates with the positioning post 252 to achieve secondary positioning of the film 101, while making it easier for the end of the filter element 100 to fit against the bottom surface of the positioning groove 251, thereby improving the adhesion effect of the rubber ring.

[0086] In an embodiment of the present invention, the filter element positioning mold base 20 of the filter element forming device is provided in two forms. The moving mechanism is connected to the two filter element positioning mold bases 20 and is used to drive the two filter element positioning mold bases 20 to move alternately onto the heating mechanism 50. The cooling mechanism 40 is provided in two forms, which are respectively located on opposite sides of the heating mechanism 50. The moving mechanism drives the filter element positioning mold base 20 to move, so that one filter element positioning mold base 20 is placed in the heating mechanism 50 and the other filter element positioning mold base 20 is placed in the cooling mechanism 40, thereby further improving the processing efficiency.

[0087] In an embodiment of the present invention, the machine base 10 of the filter element forming apparatus is provided with a lifting mechanism, the lifting mechanism including a lifting platform and a fifth cylinder. The lifting platform is slidably connected to the machine base 10. The cooling mechanism 40 and the heating mechanism 50 are both provided on the machine base 10. The fifth cylinder is connected to the machine base 10, and the output end of the fifth cylinder is connected to the machine base 10. The machine base 10 is provided with a slide rail, and the filter element positioning mold base 20 is slidably connected to the slide rail and provided on the upper side of the machine base 10. The fifth cylinder pushes the lifting platform to rise or fall, thereby driving the cooling mechanism 40 and the heating mechanism 50 to rise or fall. When the lifting platform rises, the cooling mechanism 40 and the heating mechanism 50 fit against the base 21 of the filter element positioning mold base 20 for cooling or heating.

[0088] In an embodiment of the present invention, the machine base 10 of the filter element forming device is provided with a ventilation mechanism 60, which is located on one side of the cooling mechanism 40 to improve the ventilation effect, remove odors, and reduce smoke and dust.

[0089] 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 within the protection scope of the present invention.

Claims

1. A method for processing a filter element, characterized in that, Includes the following steps: S100: Set up a filter element positioning fixture, and place the gasket, film and filter element in the filter element positioning fixture in sequence, with the central axes of the gasket, film and filter element coinciding with each other; S200: The filter element has a first end and a second end that are disposed opposite to each other, and the first end of the filter element is squeezed so that the second end of the filter element is in close contact with the film; S300: The filter element positioning fixture is heated to melt the film; S400: Squeeze the first end of the filter element again, and squeeze the melted film at the second end of the filter element so that the melted film penetrates into the second end of the filter element and sticks to the gasket so that the gasket is fixed at the second end of the filter element. A filter element positioning mold base is provided, comprising a base, a bracket, and a clamping plate. The top surface of the base has a positioning part, and the filter element positioning fixture is disposed within the positioning part. The bracket is connected to the base, and the clamping plate is connected to the bracket and positioned above the base. The clamping plate has a through hole adapted to the shape of the filter, and the through hole is opposite to the positioning part. The filter element passes through the through hole. The filter element positioning fixture includes a fixture body, the top surface of which has an upward-opening positioning groove. A positioning post is provided in the middle of the positioning groove. The top of the inner sidewall of the positioning groove has a first chamfer, and the bottom of the inner sidewall of the positioning groove has a second chamfer. A supporting surface is provided between the first and second chamfers. A two-stage pressing mechanism is provided, which includes a first pressing component and a second pressing component. In step S200, the first pressing component presses the first end of the filter element, and in step S400, the second pressing component presses the first end of the filter element.

2. The filter element processing method according to claim 1, characterized in that: In step S100, the circumferential sidewall of the filter element is shaped and positioned.

3. The filter element processing method according to claim 2, characterized in that: The first pressing assembly includes a positioning plate, a pressing block, and a first driving assembly. The first driving assembly is connected to the lower press base, and its output end is connected to the positioning plate and used to drive the positioning plate to move downward. The pressing block is movably connected to the positioning plate and can move up and down. The bottom end of the pressing block extends downward to form a pressing section. The second pressing assembly includes a mounting plate and a second driving assembly. The mounting plate is connected to the output end of the first driving assembly, and the second driving assembly is connected to the mounting plate to push the pressing block to move downward.

4. The filter element processing method according to claim 1, characterized in that: In step S400, the filter element positioning fixture is squeezed so that it moves toward the second end of the filter element.

5. The filter element processing method according to claim 1, characterized in that: In step S100, two filter element positioning fixtures are provided, one of which is located at the first end of the filter element and the other is located at the second end of the filter element.

6. The filter element processing method according to claim 1, characterized in that: In step S400, the filter element is continuously squeezed for a preset time, and after the preset time is reached, the filter element is released and cooled.

7. The filter element processing method according to claim 6, characterized in that: A heating mechanism is provided, and a cooling mechanism is provided on the side of the heating mechanism; a filter element positioning mold base is provided for fixing the filter element positioning fixture, and the filter element positioning mold base slides between the heating mechanism and the cooling mechanism.

8. The filter element processing method according to claim 7, characterized in that: A ventilation system is provided on one side of the cooling mechanism.

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