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KR-102963563-B1 - Wound Filter Core Forming Device

KR102963563B1KR 102963563 B1KR102963563 B1KR 102963563B1KR-102963563-B1

Abstract

The present invention proposes a filter core forming device for a winder filter that enables continuous forming of filter cores by automatically manufacturing a cylindrical or coil-shaped filter core by punching multiple holes on the surface of a metal strip wound on a roll and then obliquely rolling the punched metal strip into a spiral shape, and also enables the filter core rolled into a spiral shape to be used immediately without a separate post-processing step by accurately cutting the cut ends in a straight direction during the process of automatically cutting the filter core at regular intervals, and also enables automatic control of the withdrawal operation of the metal strip supplied between the winding unit and the punching unit during the automatic manufacturing process of the filter core, as well as the withdrawal length of the metal strip supplied between the punching unit and the spiral forming unit in accordance with the cutting length of the filter core, thereby realizing production continuity and mass production.

Inventors

  • 김덕종

Dates

Publication Date
20260511
Application Date
20260122

Claims (3)

  1. In a filter core forming device for a wound filter that forms a cylindrical filter core (6) by rolling a flat metal strip (1) into a spiral shape, A winding roll (12) on which a metal strip (1) is wound; A winding unit (10) composed of a servo motor (16) that drives the above winding roll (12); A punching unit (20) located in front of the above-mentioned winding unit (10) and punching a hole (2) in the metal strip (1) being uncoiled; A feeding unit (40) composed of a feeding roll (42) located in front of the punching unit (20) and driven by a servo motor (26) to pull out a metal strip (1) with a hole (2) punched in the punching unit (20) forward; A spiral shaft (102) positioned in front of the feeding section (40) and rotating by the power of a driving motor (104) while winding a metal strip (1) with a hole (2) in a spiral direction, and pulling the metal strip (1) forward while winding it into a spiral shape; A pair of cutter shafts (110) each positioned on both sides of the spiral shaft (102) and rotating by receiving power from the drive motor (104); A pair of cutter blades (112) each coupled to the tip of the cutter shaft (110) and cutting the filter core (6) which is being pulled out in a spiral shape according to the rotational movement of the spiral shaft (102); The spiral forming unit (100) is configured to guide the cutter blade (112) to be tilted so that it gathers toward the center of the spiral axis (102), and to move the cutter blade (112) forward together with the spiral axis (102) in accordance with the extraction speed of the filter core (6) being extracted forward from the spiral axis (102), thereby accurately cutting the cutting surface of the filter core (6) in a straight line shape; A first sensing unit (200) is installed between the winding unit (10) and the punching unit (20), and the first sensing unit (200) detects a metal strip (1) located between the winding unit (10) and the punching unit (20); A filter core forming device for a wound filter, characterized in that a signal applied from the first sensing unit (200) is output to a control unit (400), and the control unit (400) is configured to drive a servo motor (16) of the winding unit (10) to automatically control the withdrawal of a metal strip (1) wound on the winding roll (12).
  2. In Article 1, The above first sensing unit (200) is; A plurality of support rods (210, 212) arranged front and back with a space (214) in between for a metal strip (1) to pass through the center; A bracket plate (216) fixed to the support rods (210, 212) so as to be adjustable in height; A filter core forming device for a wound filter, characterized by being composed of a contact sensor (218) that is installed on the bracket plate (216) and outputs a signal to the control unit (400) upon contact with a metal strip (1) passing through the space (214) between the support rods (210, 212).
  3. In Paragraph 2, A second sensing unit (300) is installed between the punching unit (20) and the spiral forming unit (100), and the second sensing unit (300) detects a metal strip (1) with a hole (2) perforated therein located between the punching unit (20) and the spiral forming unit (100); A filter core forming device for a wound filter, characterized in that the control unit (400) receives a signal from the second sensing unit (300) and drives the servo motor (26) of the punching unit (20) and the servo motor (46) of the feeding unit (40) to automatically control the extraction of a metal strip (1) with a hole punched in it.

Description

Wound Filter Core Forming Device The present invention relates to a filter core forming device for a wound filter, and more specifically, to a filter core forming device for a wound filter that can automatically control the drawing operation of a metal strip supplied to a punching unit and the drawing length of a metal strip supplied between a punching unit and a spiral forming unit in accordance with the cutting length of the filter core, in the process of automatically manufacturing a cylindrical or coil-shaped filter core by punching a plurality of holes on the surface of a metal strip wound on a roll and then obliquely rolling the punched metal strip in a spiral shape. Generally, a wound filter (or winder filter) refers to an inexpensive pre-treatment cartridge filter for particle removal made by winding thread, and it is a filter used in a wide variety of industries, such as water purifiers and commercial water purification systems, plating/painting/coating factories, chemical plant pretreatment, beverage and food facilities, industrial piping protection, and water treatment towers (boilers and cooling water). A wound filter is manufactured by forming a core corresponding to a central rod and tightly winding thread or fiber around the core. The filtration precision (micron) varies depending on the spacing at which the thread is tightly wound around the core. For the core material, metals such as stainless steel are used in applications requiring corrosion resistance, such as chemical plants, while plastic is used in other water purification systems. Wound filters have the advantages of being inexpensive, having a large dust and sludge retention capacity, clogging slowly even when contaminated, and being easy to replace, but they have the disadvantages of having weak oil and grease removal capabilities, limited precision filtration compared to membrane filters, and being difficult to reuse after washing, so they are mostly used as disposable filters. A representative prior art related to the aforementioned wound filter is Korean Intellectual Property Office Published Utility Model Publication No. 20-2018-0002905 (Title: Micro Dual Filter) (hereinafter referred to as the prior art). The prior art is characterized by comprising a micro core filter having micropores formed by a heat-bonded three-dimensional fiber structure to enable micrometer particle filtering, a hollow cylindrical shape, and a micro thread filter having a mesh structure and a thread shape that surrounds the outer surface of the micro core filter. Meanwhile, the filter core constituting the prior art can be formed through forming or drawing processes. However, as mentioned, wound filters are difficult to reuse and must be disposed of after a single filtration operation, so production costs must be reduced to ensure product competitiveness. Therefore, forming the filter core through conventional forming or drawing processes not only increases the production cost of the product but also limits mass production due to the limited forming speed. FIG. 1a is a drawing illustrating the process of forming a metal strip into a filter core through a filter core forming device of a wound filter according to the present invention. FIG. 1b is a cross-sectional view of line AA of FIG. 1a. FIG. 2 is a drawing illustrating the overall configuration of a filter core forming device of a wound filter of the present invention. FIG. 3 is a drawing showing the plan of FIG. 2. FIG. 4 is a drawing illustrating the configuration of the punching unit and feeding section extracted from FIG. 2. FIG. 5 is a diagram illustrating the configuration of a PLC system that automatically controls the withdrawal of a metal strip wound on the winding unit of FIG. 2. FIG. 6 is a three-dimensional diagram illustrating the configuration of the first sensing unit in FIG. 5. FIGS. 7 and FIGS. 8 are drawings illustrating the withdrawal control operation of a metal strip located between a winding unit and a punching unit. FIGS. 9 and FIGS. 10 are drawings illustrating the withdrawal control operation of a metal strip located between a punching unit and a spiral forming unit. FIG. 11 is a front view showing the spiral forming unit extracted from FIG. 2. FIG. 12 is a plan view of FIG. 11. FIG. 13 is a side view of FIG. 11. FIGS. 14 to 20 are drawings sequentially illustrating the process of a metal strip being formed into a filter core and then cut by the operation of a spiral forming unit according to the present invention. FIG. 21 is a schematic diagram illustrating the state in which the cutting blade tilts while the cutting blade and the spiral axis are in a state of forward movement. The embodiments of the present invention will be described below with reference to the attached drawings. In the detailed description to follow, representative embodiments of the present invention will be presented to achieve the aforementioned technical objectives. Other embodiments that can be prese