Composite reverse osmosis membrane die-cutting device

Abstract

The purpose of this utility model is to disclose a composite reverse osmosis membrane die-cutting device, relating to the field of reverse osmosis membrane filter material forming technology, including an upper mold assembly and a lower mold assembly; the upper mold assembly includes a lifting cylinder and an upper template driven by the lifting cylinder, the upper template is provided with a rectangular groove, and a cylindrical protrusion is provided at the middle of each side and at each apex corner of the rectangular groove; the lower mold assembly includes a lower template that mates with the rectangular groove, a buffer pad is provided around the lower template, a support plate is provided at the bottom of the buffer pad, and a spring is provided between the buffer pad and the support plate; a cylindrical groove is provided on the lower template to mate with the cylindrical protrusion, the cylindrical protrusion is aligned with the weld gap of the composite reverse osmosis membrane, the technical effect: waste material is removed along the weld line of the outermost ring of the composite reverse osmosis membrane, and several through holes are formed in the gap while removing the waste material, realizing die-cutting and punching in one step, with high forming efficiency, so as to accurately position the composite reverse osmosis membrane in subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis membrane filter material forming technology, and in particular to a composite reverse osmosis membrane die-cutting device. Background Technology

[0002] With economic development and social progress, the problem of water scarcity is becoming increasingly severe, and water conservation has become an inevitable trend and a social consensus. Against this backdrop, efficiently treating wastewater and reusing it for industrial, agricultural, and even urban miscellaneous uses can significantly alleviate pressure on freshwater resources, reduce over-exploitation of natural water bodies, and lower the risk of environmental pollution. Water recycling is a crucial and highly practical area that has emerged with increased environmental awareness. It is directly related to sustainable water resource management, alleviating the global water crisis, and environmental protection. Composite reverse osmosis membranes, in particular, have become a core material in modern water treatment systems due to their high flux, strong anti-fouling properties, and long service life. However, in practical applications, how to precisely die-cut flat-sheet reverse osmosis composite membrane materials into specific sizes and shapes to adapt to different types of membrane modules remains a technical challenge that urgently needs to be overcome.

[0003] Therefore, it is necessary to develop a composite reverse osmosis membrane die-cutting device. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to disclose a composite reverse osmosis membrane die-cutting device.

[0005] To achieve the above-mentioned objectives, this invention provides a composite reverse osmosis membrane die-cutting device, comprising an upper die assembly and a lower die assembly;

[0006] The upper mold assembly includes a lifting cylinder and an upper template driven by the lifting cylinder. The upper template is provided with a rectangular groove, and a cylindrical protrusion is provided at the middle of each side and at each apex corner of the rectangular groove.

[0007] The lower mold assembly includes a lower template that mates with the rectangular groove, a buffer pad is provided around the lower template, a support plate is provided at the bottom of the buffer pad, and a buffer spring is provided between the buffer pad and the support plate.

[0008] The lower template is provided with a cylindrical groove that mates with the cylindrical protrusion, and the cylindrical protrusion is aligned with the weld gap of the composite reverse osmosis membrane.

[0009] Preferably, when the upper template and the lower template are in the open state, the upper surface of the buffer pad is flush with the upper surface of the lower template.

[0010] Preferably, when the lifting cylinder drives the upper template to descend and close with the lower template, the buffer pad is pressed down, and the lower template is embedded in the rectangular groove to complete the die-cutting of the composite reverse osmosis membrane.

[0011] Preferably, the cylindrical protrusion is embedded in the cylindrical groove and forms a die-cut hole in the composite reverse osmosis membrane.

[0012] Preferably, the weld marks of the composite reverse osmosis membrane consist of a first weld mark and a second weld mark that are parallel to each other, with a gap between the first weld mark and the second weld mark.

[0013] Preferably, the width of both the first weld mark and the second weld mark is 5mm-10mm.

[0014] Preferably, the width of the gap is 10mm-15mm.

[0015] Preferably, the edge of the rectangular groove is aligned with the outer edge of the second weld mark.

[0016] Preferably, a waste box is provided below the lower template.

[0017] Preferably, the waste box is under negative pressure.

[0018] Compared with the prior art, the technical effects of this utility model are as follows:

[0019] The composite reverse osmosis membrane has weld marks with gaps around its perimeter. The purpose of this invention is to remove waste material along the weld marks on the outermost ring of the composite reverse osmosis membrane. While removing the waste material, several through holes are formed in the gaps to facilitate precise positioning when using the composite reverse osmosis membrane later. The upper and lower templates of this invention are made of stainless steel, which is easy to maintain and has sharp cutting edges. Through the cooperation of the rectangular groove and the lower template, die cutting and punching are achieved in one go, resulting in high forming efficiency. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a top view schematic diagram of the composite reverse osmosis membrane before die-cutting according to this utility model.

[0022] Figure 2 This is a top view of the composite reverse osmosis membrane after die-cutting according to this utility model.

[0023] Figure 3This is a three-dimensional structural schematic diagram of the composite reverse osmosis membrane die-cutting device of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the upper mold component of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the lower mold assembly of this utility model.

[0026] Among them, 1. Upper mold assembly; 11. Lifting cylinder; 12. Upper template; 13. Rectangular groove; 14. Cylindrical protrusion; 2. Lower mold assembly; 21. Lower template; 22. Buffer pad; 23. Support plate; 24. Cylindrical groove; 3. Composite reverse osmosis membrane; 31. First weld mark; 32. Second weld mark; 4. Gap; 5. Positioning hole; 6. Guide post. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Example 1

[0030] See Figures 1 to 5 As shown in the figure, this embodiment discloses a specific implementation of a composite reverse osmosis membrane die-cutting device.

[0031] Composite reverse osmosis membrane die-cutting device, see Figures 1 to 5As shown, the assembly includes an upper mold assembly 1 and a lower mold assembly 2. The upper mold assembly 1 includes a lifting cylinder 11 and an upper template 12 driven by the lifting cylinder 11. The upper template 12 is provided with a rectangular groove 13, and a cylindrical protrusion 14 is provided at the middle of each side and at each apex of the rectangular groove 13. The cylindrical protrusion 14 is a punch structure with a cutting edge, used to punch out positioning holes 5 at the gap 4. The lower mold assembly 2 includes a lower template 21 that mates with the rectangular groove 13. A buffer pad 22 is provided around the lower template 21, and a support plate 23 is provided at the bottom of the buffer pad 22. A buffer spring is provided between the buffer pad 22 and the support plate 23. A cylindrical groove 24 that mates with the cylindrical protrusion 14 is provided on the lower template 21, and the cylindrical protrusion 14 is aligned with the weld gap 4 of the composite reverse osmosis membrane 3. Four guide posts 6 are provided on the support plate 23, and the lifting cylinder 11 drives the upper template 12 to slide up and down along the four guide posts 6.

[0032] Specifically, see Figure 1 and Figure 2 , Figure 1 It is the composite reverse osmosis membrane 3 before die cutting. Figure 2 It is along Figure 1 The composite reverse osmosis membrane 3 is die-cut along the dotted lines, with the dotted lines following the outermost weld marks. The purpose of this invention is to die-cut away the waste material around the perimeter along the dotted lines, and simultaneously, to die-cut several positioning holes 5 in the gaps 4 between the weld marks. See also Figure 1 and Figure 2 The weld marks of the composite reverse osmosis membrane 3 consist of a parallel first weld mark 31 and a second weld mark 32, with a gap 4 between the first weld mark 31 and the second weld mark 32; the width of the first weld mark 31 and the second weld mark 32 is 5mm-10mm, the width of the gap 4 is 10mm-15mm, and the diameter of the positioning hole 5 is smaller than the width of the gap 4; the edge of the rectangular groove 13 is aligned with the outer edge of the second weld mark 32, so as to completely remove the waste material outside the second weld mark 32.

[0033] See Figures 1 to 5As shown, the die-cutting principle of the composite reverse osmosis membrane 3 is as follows: When the upper template 12 and the lower template 21 are in the open mold state, the upper surface of the buffer pad 22 is flush with the upper surface of the lower template 21 under the support of the buffer spring; when the lifting cylinder 11 drives the upper template 12 to descend and close with the lower template 21, the buffer pad 22 is pressed down by the upper template 12, and pressure buffering and precise positioning are achieved through the buffer structure. The lower template 21 is embedded in the rectangular groove 13, and the relative movement of the lower template 21 and the rectangular groove 13 forms a sharp cutting edge for cutting the composite reverse osmosis membrane 3, completing the die-cutting of the composite reverse osmosis membrane 3. At the same time, the cylindrical protrusion 14 is embedded in the cylindrical groove 24 and forms a die-cutting hole in the composite reverse osmosis membrane 3. The die-cutting hole serves as the positioning hole 5 for subsequent use of the composite reverse osmosis membrane 3. The composite reverse osmosis membrane 3 has a certain elasticity. If a traditional The way the die-cutting blades and die-cutting grooves work together requires that the installation height of the four die-cutting blades forming the rectangle be consistent, as the die-cutting blades are in a protruding state. Otherwise, a certain cut will be not completely cut, resulting in die-cutting failure. The traditional die-cutting blades are inconvenient to install and maintain, affecting the die-cutting efficiency. The upper template 12 and the lower template 21 are both made of stainless steel, which is easy to maintain and has sharp blades. In this embodiment, during the process of forming a cut by the relative movement of the lower template 21 and the rectangular groove 13, the lower template 21 can achieve rapid die-cutting once the surface reaches a certain flatness. There is no need for manual installation and adjustment of the die-cutting blade. The lower template 21 needs to be embedded in the rectangular groove 13 to complete the die-cutting. That is, through the cooperation of the rectangular groove 13 and the lower template 21, the cylindrical protrusion 14 is embedded in the cylindrical groove 24 and forms a die-cutting hole in the gap 4 of the composite reverse osmosis membrane 3, realizing die-cutting and punching in one go, improving both die-cutting efficiency and maintenance efficiency. After the cylindrical protrusion 14 is embedded in the cylindrical groove 24 and forms a die-cutting hole in the gap 4 of the composite reverse osmosis membrane 3, the cylindrical groove 24 penetrates the lower template 21 in order to store the small round waste material cut off in time. A waste box is set below the lower template 21. The waste box is under negative pressure. The small round waste material can be sucked into the waste box in time by the negative pressure to prevent the small round waste material from running around or adhering to the positioning hole 5.

Claims

1. A composite reverse osmosis membrane die-cutting device, characterized in that, Includes upper mold assembly and lower mold assembly; The upper mold assembly includes a lifting cylinder and an upper template driven by the lifting cylinder. The upper template is provided with a rectangular groove, and a cylindrical protrusion is provided at the middle of each side and at each apex corner of the rectangular groove. The lower mold assembly includes a lower template that mates with the rectangular groove, a buffer pad is provided around the lower template, a support plate is provided at the bottom of the buffer pad, and a buffer spring is provided between the buffer pad and the support plate. The lower template is provided with a cylindrical groove that mates with the cylindrical protrusion, and the cylindrical protrusion is aligned with the weld gap of the composite reverse osmosis membrane.

2. The composite reverse osmosis membrane die-cutting device as described in claim 1, characterized in that, When the upper template and the lower template are in the open state, the upper surface of the buffer pad is flush with the upper surface of the lower template.

3. The composite reverse osmosis membrane die-cutting device as described in claim 2, characterized in that, When the lifting cylinder drives the upper template to descend and close with the lower template, the buffer pad is pressed down, and the lower template is embedded in the rectangular groove to complete the die-cutting of the composite reverse osmosis membrane.

4. The composite reverse osmosis membrane die-cutting device as described in claim 3, characterized in that, The cylindrical protrusion is embedded in the cylindrical groove and forms a die-cut hole in the composite reverse osmosis membrane.

5. The composite reverse osmosis membrane die-cutting device as described in claim 4, characterized in that, The weld marks of the composite reverse osmosis membrane consist of a first weld mark and a second weld mark that are parallel to each other, with a gap between the first weld mark and the second weld mark.

6. The composite reverse osmosis membrane die-cutting device as described in claim 5, characterized in that, The width of both the first and second weld marks is 5mm-10mm.

7. The composite reverse osmosis membrane die-cutting device as described in claim 6, characterized in that, The width of the gap is 10mm-15mm.

8. The composite reverse osmosis membrane die-cutting device as described in claim 6, characterized in that, The edge of the rectangular groove is aligned with the outer edge of the second weld mark.

9. The composite reverse osmosis membrane die-cutting apparatus as described in any one of claims 1-8, characterized in that, A waste box is provided below the lower template.

10. The composite reverse osmosis membrane die-cutting device as described in claim 9, characterized in that, The waste container is under negative pressure.

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