An edge-sealing and locking device for a filter layer of a filter element and its usage method

Abstract

An edge-sealing and locking device for a filter layer of a filter element and its usage method. The edge-sealing and locking device includes a lower template, a middle template, an upper template, and a V-shaped cutter. Among them, the V-shaped cutter is connected to a linear motion mechanism. The middle template is floatingly connected to the lower template through guide posts and springs, and a pressure source is provided above the upper template. A hemming structure is provided between the middle template and the upper template, and a bending structure is provided between the middle template and the lower template. The usage method of the edge-sealing and locking device includes the following steps: S1: Place the filter layer between the middle template and the upper template, and hem the side edge of the filter layer; S2: Make the V-shaped cutter slide horizontally to perform a V-shaped bending on the filter layer; S3: Press the upper template, the middle template, and the lower template together to complete the edge-sealing and locking. This edge-sealing and locking device can replace manual operation to perform edge-sealing and locking on the filter layer, eliminate the interference of human factors, improve the processing efficiency, and meet the needs of mass production.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic components, and particularly to a device for edge sealing and locking of a filter metal filter element, as well as a method for using the device. Background Art

[0002] Filters are widely used in the hydraulic field. A variety of metal filter elements are contained in filters, and the filter layer of the metal filter element is composed of multiple layers of metal meshes. As Figure 1 shown, for a certain rectangular metal filter element, it is necessary to perform edge sealing and locking on the side of the filter layer 12. After edge sealing and locking, it is required that the folded edges on both sides of the filter element 12 are arranged in a V-shaped regular pattern. However, the metal mesh has high hardness, the steel wires are prone to dispersion, and there are many folded edges. In addition, there are high requirements for the length after edge sealing in the process, and the processing difficulty is great.

[0003] According to the traditional processing technology, it is necessary to manually use a dialing tool to extrude each corrugation of the filter layer so that it is deformed into a V shape after extrusion, and then fix it with a tooling and stamp it into shape under a press. Due to many unstable factors in manual extrusion, the edge sealing and locking effect of the filter layer is uncontrollable and often needs to be repeatedly corrected. In addition, the dimensional consistency of the filter layer is poor. It is necessary to manually extrude each corrugation of the filter layer, with a large workload and low efficiency, and it cannot meet the needs of normal production. Summary of the Invention

[0004] In order to overcome the deficiencies in the background art, the present invention discloses an edge sealing and locking device for a filter layer of a filter element and a method for using the same, and the purpose thereof is to provide an edge sealing and locking device with high processing efficiency, good precision control, and stable and reliable quality, so as to meet the batch processing requirements for edge sealing and locking of the filter layer.

[0005] To achieve the above invention purpose, the present invention adopts the following technical solutions:

[0006] An edge sealing and locking device for a filter layer of a filter element and a method for using the same, the edge sealing and locking device includes a lower template, a middle template, an upper template, and a V-shaped cutting tool. Among them, the V-shaped cutting tool is connected to a linear motion mechanism, the middle template is floatingly connected to the lower template through guide posts and springs, and a pressure source is provided above the upper template; a folding edge structure is provided between the middle template and the upper template, and a bending structure is provided between the middle template and the lower template;

[0007] The method for using the edge sealing and locking device includes the following steps:

[0008] S1: Place the filter layer between the middle template and the upper template, and then use the pressure source to apply a pre-pressure to the upper template, so that the folding edge structures on the middle template and the upper template fold the side edges of the filter layer;

[0009] S2: Driven by the linear motion mechanism, the V-shaped cutting tool slides horizontally, so that the folded edges of the filter layer are bent inward into a V shape;

[0010] S3: Increase the pressure of the pressure source to press the upper template, the middle template and the lower template together. At this time, the bending structure between the middle template and the lower template bends the V-shaped bend, reducing the opening of the V-shaped bend.

[0011] Further improving the technical solution, it further includes a bottom plate, and the lower template, the manual clamp and the linear motion mechanism are fixed on the floor.

[0012] Further improving the technical solution, the linear motion mechanism is a rodless cylinder.

[0013] Further improving the technical solution, a frame body is fixed on the bottom plate, and the main cylinder is fixed on the frame body.

[0014] Further improving the technical solution, the tip angle of the V-shaped cutter is 30°.

[0015] Further improving the technical solution, the pressure source is a manual clamp and a main cylinder. Among them, the manual clamp is used to apply a pre-pressure to the upper template.

[0016] Due to the adoption of the above technical solution, compared with the background technology, the present invention has the following beneficial effects:

[0017] This edge-sealing and locking device can replace manual operation to seal and lock the filter layer, eliminating the interference of human factors, improving the processing efficiency, and meeting the needs of mass production.

[0018] This edge-sealing and locking device can precisely control the shape and size of the edge-sealing and locking, obtaining a metal filter layer with good consistency and stable quality. Description of the Drawings

[0019] Figure 1 Shows a schematic diagram of the edge-sealing and locking of the filter layer.

[0020] Figure 2 Shows a schematic diagram of the structure of this edge-sealing and locking device.

[0021] Figure 3 Shows a schematic diagram of the structures of the lower template, the middle template and the upper template.

[0022] Figure 4 Shows a schematic diagram of folding the edge of the filter layer.

[0023] Figure 5 Shows a schematic diagram of making a V-shaped bend on the filter layer.

[0024] Figure 6 Shows a schematic diagram of bending the filter layer.

[0025] In the figure: 1, bottom plate; 2, lower template; 3, middle template; 4, upper template; 5, manual clamp; 6, main cylinder; 7, V-shaped cutter; 8, rodless cylinder; 9, frame; 10, guide post; 11, spring; 12, filter layer; 13, fixing plate; 14, tool holder; 15, spacer block; 16, pressure head. Specific embodiments

[0026] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Embodiment 1:

[0028] An edge-sealing and locking device for the filter layer of a filter element, as Figure 2 shown, the edge-sealing and locking device includes a bottom plate 1, a lower template 2, a middle template 3, an upper template 4 and a V-shaped cutter 7. The following specifically describes its structure and function.

[0029] The lower template 2 is fixed on the bottom plate 1, and the middle template 3 and the upper template 4 are respectively located above the lower template 2. A frame 9 is also fixed on the bottom plate 1, and a main cylinder 6 is fixed on the frame 9. The head end of the rod of the main cylinder 6 is connected with a pressure head 16, and the pressure head 16 is used to apply pressure to the upper template 4. A pair of manual clamps 5 are respectively arranged on the front and rear sides of the upper template 4, and the manual clamps 5 are fixed on the bottom plate 1 through spacer blocks 15. A pair of rodless cylinders 8 are respectively arranged on the left and right sides of the upper template 4. A tool holder 14 is installed on the sliding body of the rodless cylinder 8, and a V-shaped cutter 7 is installed on the tool holder 14. The tip angle of the V-shaped cutter 7 is 30°. After the rodless cylinder 8 is ventilated, the sliding body can drive the V-shaped cutter 7 to slide horizontally. A chute is provided at one end of the bottom plate 1, and the rodless cylinder 8 is connected to a fixing plate 13, and the fixing plate 13 can move left and right along the chute. In this way, the distance between the V-shaped cutter 7 and the upper template 4 can be adjusted.

[0030] As shown Figures 3 - 6 in the figure, a pair of guide pillar holes are provided on the bottom plate 1 and the lower template 2, a pair of guide pillars 10 are provided on the middle template 3, and the middle template 3 is floatingly connected to the lower template 2 through the guide pillars 10 and springs 11. A pressing groove is provided on the upper template 4, and a convex block corresponding to the pressing groove is provided on the middle template 3, and a hemming structure is formed between the pressing groove and the convex block. An inclined surface is provided on the lower bottom surface of the convex block, and an inclined surface is also provided on the upper surface of the lower template 2, and the two inclined surfaces form a bending structure.

[0031] The usage method of the edge-sealing and locking device includes the following steps:

[0032] S1: As shown Figure 4 in the figure, first place the filter layer 12 between the middle template 3 and the upper template 4 and align it with the upper template 4, and then align the upper template 4 and the middle template 3 through the positioning pins. In order to avoid scratching the filter layer 12, paper can be placed between the filter layer 12 and the upper template 4 for protection. Then use the manual clamp 5 to apply a pre-pressure to the upper template 4, so that the hemming structures on the middle template 3 and the upper template 4 hem the side edges of the filter layer 12. The manual clamp 5 can provide a pre-pressure of about 2000N, and this pre-pressure can hem the side edges of the filter layer 12.

[0033] S2: As shown Figure 5 in the figure, driven by the rodless cylinder 8, the V-shaped cutter 7 slides horizontally, so that the hem of the filter layer 12 is bent inward in a V shape.

[0034] Specifically, the cylinder diameter of the rodless cylinder 8 is 30mm, the driving air pressure is 0.6MPa, and the rodless cylinder 8 drives the V-shaped cutter 7 to slide at a constant speed, so that the filter layer 12 is deformed regularly in a V shape. The depth of the V-shaped bend is 4mm and the height is 3mm.

[0035] S3: As shown Figure 6 in the figure, air is supplied to the main cylinder 6, the air pressure is 0.6MPa, the main cylinder 6 acts on the upper template 4 through the pressing head 16, so that the upper template 4, the middle template 3 and the lower template 2 are pressed together. At this time, the middle template 3 moves downward through the guide pillars 10, compressing the springs 11, and the bending structure between the middle template 3 and the lower template 2 bends the V-shaped bend, making the opening of the V-shaped bend smaller.

[0036] Specifically, the cylinder diameter of the main cylinder 6 is 100mm, and it can provide a maximum pressure of 4700N. This pressure can press the hem into the required edge-sealing and locking shape, and can also solidify and form the middle part of the filter screen. In this embodiment, the middle part of the filter screen is a plane. According to the design requirements, the middle part of the filter screen can also be a curved surface. At this time, the pressing groove on the upper template 4 and the convex block on the middle template 3 should both be designed as curved surfaces.

[0037] Finally, the filtered layer 12 after edge sealing and locking is removed from the middle template 3, and then the edge sealing and locking is clamped in the edge sealing ring sleeve and placed on a press for pressing to finally obtain the finished product of the filtered layer 12.

[0038] Example 2:

[0039] Different from Example 1, in this example, the pressure source includes a main cylinder and two side cylinders. The two side cylinders replace the two manual clamps in Example 1, and the two side cylinders can provide a pre-pressure of 2000 N.

[0040] The parts not described in detail are prior art. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for using a filter layer edge-sealing and locking device for a filter element, characterized in that: The edge-sealing and locking device includes a bottom plate, a manual clamp, a main cylinder, a linear motion mechanism, a lower template, a middle template, an upper template and a V-shaped cutter. Among them, the lower template, the manual clamp and the linear motion mechanism are fixed on the bottom plate, the V-shaped cutter is connected to the linear motion mechanism, the main cylinder is arranged above the upper template through a frame body, and the middle template is floatingly connected to the lower template through guide posts and springs; a hemming structure is provided between the middle template and the upper template, and a bending structure is provided between the middle template and the lower template; The usage method of the edge-sealing and locking device includes the following steps: S1: Place the filter layer between the middle template and the upper template, and then use the manual clamp to apply a pre-pressure to the upper template, so that the hemming structures on the middle template and the upper template hem the side edges of the filter layer; S2: Driven by the linear motion mechanism, the V-shaped cutter slides horizontally, so that the hem of the filter layer is bent inward in a V shape; S3: Use the main cylinder to press the upper template, so that the upper template, the middle template and the lower template are pressed together. At this time, the bending structure between the middle template and the lower template bends the V-shaped bend, making the opening of the V-shaped bend smaller.

2. The method for using a filter layer edge-sealing and locking device for a filter element according to claim 1, characterized in that: The linear motion mechanism is a rodless cylinder.

3. The method for using a filter layer edge-sealing and locking device for a filter element according to claim 1, characterized in that: The tip angle of the V-shaped cutter is 30°.

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