Dry cleaning apparatus

Abstract

The present invention relates to a dry cleaning device. One embodiment of the present invention provides a dry cleaning device comprising: a housing having an opening on one side, a length and width along a first direction and a second direction, and an internal space; a plurality of drive rollers rotatably disposed on the side of the opening of the housing and transporting a cleaning object disposed outside the opening along the second direction of the housing; a spray unit disposed in the internal space of the housing and spraying compressed air onto the cleaning object transported by the plurality of drive rollers; and a drive unit that rotates the plurality of drive rollers.

Description

Technology Field

[0001] An embodiment of the present invention relates to a dry cleaning device. Background Technology

[0002] Displays manufactured through microfabrication processes are susceptible to critical defects, such as pattern defects and insulation film failures, if fine dust or chemical residues generated during the manufacturing process remain on the surface. Consequently, a cleaning process to remove foreign substances is essential in the display manufacturing process.

[0003] Cleaning processes are utilized across all industrial sectors, including the display and semiconductor industries, and are primarily applied to intermediate and final products during the manufacturing process. Cleaning plays a role in improving product quality and yield by removing contaminants, such as particles floating around the product or particles adhered to the product.

[0004] Cleaning processes can be broadly divided into wet cleaning and dry cleaning. Wet cleaning is a method that uses liquids such as chemical solutions, and it has the advantages of being cost-effective and having a relatively simple process. However, wet cleaning has many problems, such as back-contamination caused by impurities in chemicals, increased chemical costs, and waste disposal issues, so the demand for dry cleaning has recently been rapidly increasing.

[0005] Dry cleaning is a method that utilizes a medium other than a solution, and compared to wet cleaning, it has lower process costs and is easy to maintain. A dry cleaning device that uses gas injection pressure can remove contaminants adhered to the object to be cleaned by controlling the gas flow rate and generating gas vortices.

[0006] However, conventional dry cleaning devices generate negative pressure between the device and the object during the process of suctioning and collecting contaminants removed from the object. This suction force can cause light objects to adhere to the bottom of the cleaning device. If a display or semiconductor substrate comes into contact with the device during the cleaning process, the product's surface is damaged, resulting in it being treated as a defective item.

[0007] Therefore, there is a need to develop a dry cleaning device that prevents dust dispersion during the cleaning process and effectively removes contaminants, while ensuring that the target object does not adhere to the cleaning device. The problem to be solved

[0008] The present invention aims to solve the aforementioned problems and / or limitations by providing a dry cleaning device that can prevent the object to be cleaned from adhering to the device during the cleaning process, is applicable to various cleaning objects such as thin plates or lightweight products, and minimizes surface damage such as fine scratches on the object to be cleaned. means of solving the problem

[0009] One embodiment of the present invention provides a dry cleaning device comprising: a housing having an opening on one side, a length and width along a first direction and a second direction, and an internal space; a plurality of drive rollers rotatably disposed on the side of the opening of the housing and transporting a cleaning object disposed outside the opening along the second direction of the housing; a spray unit disposed in the internal space of the housing and spraying compressed air onto the cleaning object transported by the plurality of drive rollers; and a drive unit that rotates the plurality of drive rollers.

[0010] In one embodiment of the present invention, a roller shaft may be included having a rotation axis parallel to the first direction, which rotates by receiving power from the driving unit, and wherein a plurality of driving rollers are spaced apart from each other along the direction of the rotation axis.

[0011] In one embodiment of the present invention, the roller shafts are spaced apart along the second direction and arranged in multiple numbers, excluding the injection area where compressed air is injected through the injection unit.

[0012] In one embodiment of the present invention, a ring belt connected to a pair of mutually adjacent drive rollers along the second direction based on the area where the compressed air is injected may be further included.

[0013] In one embodiment of the present invention, the driving unit may include: a driving motor disposed on the outer side of one end of the housing along the first direction; and a driving shaft that receives driving force from the driving motor and rotates, and transmits rotational force to the roller shaft.

[0014] In one embodiment of the present invention, the drive shaft and the roller shaft can be connected to enable non-contact transmission of rotational force using a magnet gear drive method.

[0015] In one embodiment of the present invention, the invention may further include an inner frame disposed in the internal space of the housing; wherein the inner frame has an opening on one side, has an internal space in which the injection unit is disposed, and may include an air supply passage for supplying the compressed air to the injection unit.

[0016] In one embodiment of the present invention, a guide unit disposed between the outer surface of the inner frame and the inner surface of the housing to guide the flow of the compressed air may be further included.

[0017] In one embodiment of the present invention, the guide unit may include: a plurality of guide spacers disposed between the plurality of driving rollers along the first direction and having through holes through which the compressed air passes; and a plurality of guide covers disposed between the plurality of guide spacers, covering a portion of the plurality of driving rollers and having through holes through which the compressed air passes.

[0018] In one embodiment of the present invention, the roller shaft may include: a central roller shaft disposed in the center of a spray area where compressed air is sprayed through the spray unit; a first roller shaft each spaced apart on both sides of the central roller shaft along the second direction adjacent to the spray area; and a second roller shaft spaced apart on one side of the first roller shaft in the opposite direction to the central roller shaft.

[0019] In one embodiment of the present invention, a ring belt connected to the driving roller of the central roller shaft and the driving roller of the first roller shaft along the second direction may be further included.

[0020] In one embodiment of the present invention, the ring belt can be inserted into the inner side of the outer surface of the drive rollers.

[0021] In one embodiment of the present invention, a discharge unit may be included that is arranged to communicate with the internal space of the housing and collects foreign substances together with the compressed air of the internal space and discharges them to the outside. Effects of the invention

[0022] A dry cleaning device according to one embodiment of the present invention can prevent a cleaning target from adhering to the device even if an airflow that sucks in foreign substances is generated during the cleaning process.

[0023] In addition, a dry cleaning device according to one embodiment of the present invention can improve cleaning efficiency of a cleaning target and minimize or prevent surface damage, such as fine scratches, of the cleaning target, thereby improving cleaning quality.

[0024] In addition, a dry cleaning device according to one embodiment of the present invention can perform cleaning of various objects to be cleaned, such as thin plates or light products, and in particular, can perform cleaning on both sides of a thin plate simultaneously.

[0025] Of course, the scope of the present invention is not limited by these effects. Brief explanation of the drawing

[0026] FIG. 1 is a front external perspective view illustrating a dry cleaning device according to one embodiment of the present invention. FIG. 2 is a rear external perspective view illustrating a dry cleaning device according to one embodiment of the present invention. Fig. 3 is a bottom perspective view of Fig. 2. FIG. 4 is a perspective view of FIG. 1 with some components removed. Fig. 5 is an enlarged perspective view of part A of Fig. 2. Fig. 6 is an enlarged perspective view of part B of Fig. 3. FIG. 7 is a cross-sectional perspective view along the line I-I' of FIG. 1. FIG. 8 is a cross-sectional perspective view along line II-II' of FIG. 1. FIG. 9 is a rear bottom perspective view of a dry cleaning device according to another embodiment of the present invention. Fig. 10 is an enlarged perspective view of part C of Fig. 9. FIG. 11 is a cross-sectional view of a dry cleaning device according to another embodiment of the present invention. Specific details for implementing the invention

[0027] Hereinafter, the following embodiments will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0028] Since the embodiments are capable of various modifications, specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the embodiments and the methods for achieving them will become clear by referring to the details described below in conjunction with the drawings. However, the embodiments are not limited to those disclosed below and can be implemented in various forms.

[0029] In the drawings, parts unrelated to the explanation have been omitted to clearly explain the invention, and similar parts throughout the specification have been given similar reference numerals.

[0030] In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another.

[0031] In the following embodiments, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0032] In the following examples, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added.

[0033] In the following embodiments, when a part such as a unit, area, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another unit, area, or component is interposed in between.

[0034] In the following embodiments, terms such as "connect" or "combine" do not necessarily imply a direct and / or fixed connection or combination of two members unless the context clearly indicates otherwise, nor do they exclude the interposition of another member between the two members.

[0035] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the following embodiments are not necessarily limited to those illustrated.

[0036] The terms "above," "upper," "lower," "lower," etc., used in this specification are used merely to facilitate the description of the relationships between the components illustrated in the drawings and do not limit the direction in which the components are arranged.

[0037] FIG. 1 is a front external perspective view illustrating a dry cleaning device according to one embodiment of the present invention, FIG. 2 is a rear external perspective view illustrating a dry cleaning device according to one embodiment of the present invention, FIG. 3 is a bottom perspective view of FIG. 2, and FIG. 4 is a perspective view illustrating FIG. 1 with some components removed.

[0038] Referring to FIGS. 1 to 4, a dry cleaning device (10) according to one embodiment of the present invention may include a housing (100), an inner frame (200), a plurality of driving rollers (300), a roller shaft (400), a spray unit (500), a driving unit (600), a guide unit (700), and a discharge unit (800).

[0039] The dry cleaning device (10) can separate foreign substances remaining on the object to be cleaned by spraying compressed air onto the object to be cleaned, and can collect the foreign substances separated from the object to be cleaned together with the compressed air and discharge them to the outside.

[0040] The dry cleaning device (10) may be placed on one side or the other side of the object to be cleaned to dry clean the one side or the other side of the object to be cleaned, but is not limited thereto. The dry cleaning device (10) of the present embodiment may also dry clean both sides of the object to be cleaned simultaneously by using a plurality of drive rollers (300) to smoothly transport the object to be cleaned while performing cleaning.

[0041] The dry cleaning device (10) can move the object to be cleaned from one side (the lower side in FIG. 1) of the dry cleaning device (10) when cleaning the object to be cleaned, thereby allowing cleaning of a large area of ​​the object to be cleaned and cleaning of multiple objects to be cleaned while moving them continuously.

[0042] The object to be cleaned by the dry cleaning device (10) is not limited to a specific use or shape, but may mainly be a glass substrate, a metal substrate, a wafer, or an LED substrate, and may also be a substrate coated with a metal or non-metal material or a substrate having irregularities.

[0043] However, the cleaning target of the dry cleaning device (10) according to the present embodiment is not limited to this, and can be applied to various targets that are difficult to wet clean, sensitive to surface quality such as thin plates, and have foreign substances on the surface.

[0044] FIG. 5 is an enlarged perspective view of part A of FIG. 2, FIG. 6 is an enlarged perspective view of part B of FIG. 3, FIG. 7 is a cross-sectional perspective view along line I-I' of FIG. 1, and FIG. 8 is a cross-sectional perspective view along line II-II' of FIG. 1.

[0045] Referring further to FIGS. 7 and FIGS. 8, the housing (100) of the present embodiment may have an opening on one side (the lower side of FIG. 1, in the Z-axis direction), may have a length and width along the first direction (X-axis direction) and the second direction (Y-axis direction), respectively, and may have an internal space (S1) on the inside.

[0046] An inner frame (200) may be disposed in the inner space (S1) of the housing (100), and the inner frame (200) may be formed in a shape corresponding to the inner shape of the housing (100).

[0047] An exhaust section (800) communicating with an internal space (S1) may be disposed on the upper part of the housing (100), and the exhaust section (800) may be spaced apart in multiple places along the longitudinal direction (X-axis direction) on the upper part of the housing (100).

[0048] The opening of the housing (100) can form a cleaning area that sprays compressed air onto a cleaning target to separate foreign substances from the cleaning target and collects the separated foreign substances.

[0049] That is, the spray unit (500) placed in the internal space (S1) of the housing (100) can spray compressed air onto the object to be cleaned through the opening of the housing (100) to separate foreign substances from the object to be cleaned.

[0050] In addition, foreign substances separated from the object to be cleaned can be collected in the discharge section (800) through the opening and internal space (S1) of the housing (100) and then discharged to the outside.

[0051] The inner frame (200) of the present embodiment has a shape corresponding to the housing (100), may have an opening on one side (the lower side of FIG. 1, in the Z-axis direction), may have length and width along the first direction (X-axis direction) and the second direction (Y-axis direction), and may have an internal space (S2) on the inside.

[0052] An injection unit (500) may be placed in the internal space (S2) of the inner frame (200), and an air supply channel (P) for supplying compressed air to the injection unit (500) may be formed on the side opposite the opening of the inner frame (200) (upper side in FIG. 7, Z-axis direction).

[0053] The inner frame (200) can be positioned in the inner space (S1) of the housing (100) spaced apart from the inner surface of the housing (100).

[0054] For example, a connecting support pin (not shown) may be installed between the upper outer surface of the inner frame (200) and the upper inner surface of the housing (100), and through the connecting support pin, the inner frame (200) may be supported by the housing (100) while being spaced apart from the housing (100).

[0055] Accordingly, the inner frame (200) can be covered by the housing (100) with the side and top, excluding the opening, spaced apart from the inner surface of the housing (100).

[0056] Accordingly, the opening of the inner frame (200) can form an area (F1, hereinafter referred to as the injection area) for spraying compressed air onto a cleaning target through the injection unit (500), and the area (F2, hereinafter referred to as the suction area) among the openings of the housing (100), excluding the opening of the inner frame (200), can form an area where the compressed air sprayed onto the cleaning target is sucked in and collected along with foreign matter.

[0057] Meanwhile, an air supply pipe (250) communicating with an air supply channel (P) may be installed on the upper side of the inner frame (200), and the air supply pipe (250) may extend through the upper surface of the housing (100).

[0058] Although not illustrated in detail, the air supply pipe (250) is connected to, for example, an external air pump (not shown) to receive compressed air from the air pump and supply compressed air to the injection unit (500).

[0059] Referring further to FIG. 6, a plurality of drive rollers (300) of the present embodiment may be rotatably positioned on the side of the opening of the housing (100) and may transport a cleaning object positioned on the outside of the opening of the housing (100) along the second direction (Y-axis direction) of the housing (100).

[0060] A plurality of drive rollers (300) may be positioned so that a portion of them protrudes toward the object to be cleaned beyond the end of the opening side of the housing (100), thereby preventing the object to be cleaned from being attached to or adsorbed to the housing (100), and allowing the object to be cleaned to be smoothly transported through the plurality of drive rollers (300).

[0061] A plurality of drive rollers (300) may be rotatably arranged on a roller shaft (400). Specifically, a plurality of drive rollers (300) may be spaced apart from each other along the rotational axis direction (X-axis direction) of the roller shaft (400). Additionally, a roller shaft (400) having a plurality of drive rollers (300) may be spaced apart in a plurality along a second direction (Y-axis direction).

[0062] That is, a plurality of drive rollers (300) can be uniformly and densely arranged across the entire cleaning area corresponding to the opening of the housing (100). Accordingly, since the object to be cleaned can be transported smoothly by stably contacting the plurality of drive rollers (300), surface damage such as fine scratches can be minimized during the cleaning process.

[0063] Meanwhile, multiple drive rollers (300) may be positioned only in the suction areas (F2) on both sides relative to the aforementioned injection area (F1). Accordingly, the compressed air injected into the injection area (F1) can be smoothly injected into the object to be cleaned without interference with the drive rollers (300), and the cleaning power of the object to be cleaned can be further improved.

[0064] At this time, the plurality of drive rollers (300) may include a first drive roller (310) positioned adjacent to the injection area (F1) and a second drive roller (320) positioned spaced apart from the first drive roller (310) on the opposite side of the injection area (F1).

[0065] In detail, the first drive roller (310) may be spaced apart and arranged in multiple numbers along the first direction (X-axis direction) of the housing (100) through the first roller shaft (410) described later, and may be arranged adjacent to the injection area (F1) along the second direction (Y-axis direction) of the housing (100) together with the first roller shaft (410).

[0066] At this time, since the first drive roller (310) or the second drive roller (320) is not positioned in the spray area (F1), the object to be cleaned may have difficulty receiving the conveying force and support force from the roller in the spray area (F1), and accordingly, the object to be cleaned may be affected by the strong airflow of compressed air in the spray area (F1).

[0067] That is, since the first drive roller (310) and the second drive roller (320) are densely arranged only in the suction areas (F2) on both sides, the object to be cleaned in the suction area (F2) can be smoothly transported and supported by the first drive roller (310) and the second drive roller (320), but the object to be cleaned in the spray area (F1) is difficult to transport and support by the first drive roller (310) or the second drive roller (320).

[0068] Therefore, the cleaning target being transported to the injection area (F1) may be adsorbed to the device or have its surface damaged by physical pressure due to the influence of a strong injection airflow or a strong suction airflow of compressed air.

[0069] To this end, the dry cleaning device (10) of the present embodiment may connect and install a ring belt (900) capable of transporting and supporting a cleaning object between a pair of first drive rollers (310) positioned in both suction areas (F2).

[0070] Specifically, a pair of first drive rollers (310) positioned in both suction areas (F2) may each have a groove formed on their outer surface, and a ring belt (900) may be inserted and connected into the grooves of the pair of first drive rollers (310).

[0071] At this time, the first drive roller (310) may be formed thicker than the second drive roller (320) to form a groove, and may have a smaller diameter than the second drive roller (320).

[0072] That is, the first drive roller (310) can be formed thicker than the second drive roller (320) so as to form a groove, and since the ring belt (900) inserted into the groove of the first drive roller (310) protrudes from the outer surface of the first drive roller (310) to be supported in contact with the object to be cleaned, the first drive roller (310) can have a smaller diameter than the second drive roller (320) by the thickness of the ring belt (900).

[0073] Ultimately, when a pair of first drive rollers (310) are rotated, the ring belt (900) is rotated together, so that the object to be cleaned can be smoothly transported in contact with the ring belt (900) in the spraying area (F1) between the pair of first drive rollers (310).

[0074] Accordingly, the object to be cleaned transported through the spray area (F1) can be smoothly transported and cleaned while continuously contacted and supported by the ring belt (900), and as a result, the object to be cleaned can be protected from the influence of the strong airflow of compressed air generated in the spray area (F1), thereby preventing adsorption to the device or surface damage caused by physical pressure.

[0075] The second drive roller (320) can be arranged in multiple numbers spaced apart along the first direction (X-axis direction) of the housing (100) via the second roller shaft (420) described later, and can be arranged spaced apart from the first drive roller (310) to the opposite side of the injection area (F1) along the second direction (Y-axis direction) of the housing (100).

[0076] At this time, the second drive roller (320) may be additionally positioned outside the suction area (F2), that is, outside the opening of the housing (100), so that the object to be cleaned can be more easily and smoothly introduced into the suction area (F2) for the cleaning process, and the object to be cleaned after the cleaning process is completed can be more easily and smoothly discharged to the outside of the suction area (F2).

[0077] Referring further to FIG. 5, the roller shaft (400) of the present embodiment may have a rotation axis parallel to the first direction (X-axis direction) of the housing (100), and a plurality of driving rollers (300) may be spaced apart from each other along the rotation axis direction.

[0078] The roller shafts (400) can be spaced apart along the second direction (Y-axis direction) and arranged in multiple numbers. At this time, the roller shafts (400) can be densely spaced apart, except for the area where compressed air is sprayed through the spray unit (500), i.e., the spray area (F1).

[0079] Accordingly, a plurality of drive rollers (300) arranged on the roller shaft (400) can be uniformly and densely arranged along the first direction (X-axis direction) and the second direction (Y-axis direction) of the housing (100) in the entire cleaning area corresponding to the opening of the housing (100).

[0080] In detail, the roller shaft (400) may include a first roller shaft (410) on which a plurality of first drive rollers (310) are arranged and a second roller shaft (420) on which a plurality of second drive rollers (320) are arranged.

[0081] The first roller shaft (410) and the second roller shaft (420) may be positioned excluding the injection area (F1), for example, the first roller shaft (410) may be positioned adjacent to the injection area (F1) among the two suction areas (F2), and the second roller shaft (420) may be positioned spaced apart from the first roller shaft (410) on the opposite side of the injection area (F1).

[0082] The roller shaft (400) can be rotated by receiving power through the drive unit (600). Specifically, the roller shaft (400), that is, the first roller shaft (410) and the second roller shaft (420), can be rotated simultaneously by receiving power from the drive shaft (640) of the drive unit (600) described later.

[0083] For example, the roller shaft (400) can be rotated by receiving rotational force non-contactually using a drive shaft (640) and a magnet gear drive method.

[0084] That is, as shown in FIG. 5, a magnetic gear (MG) can be disposed non-contactually adjacent to each end of the roller shaft (400), namely the end of the first roller shaft (410), the end of the second roller shaft (420), and the corresponding drive shaft (640).

[0085] At this time, the drive shaft (640) may be positioned on the upper part of the roller shaft (400), and the magnet gear (MG) of the roller shaft (400) and the magnet gear (MG) of the drive shaft (640) may be arranged in an orthogonal shape, that is, so that their mutual rotation axes form a 90-degree angle, but are not limited thereto, and various arrangements and shapes are possible to transmit the rotational force of the drive shaft (640) to the roller shaft (400) to rotate it.

[0086] Accordingly, when the drive shaft (640) rotates, the roller shaft (400) can be rotated in a non-contact manner through interaction via magnetic attraction and repulsion between the two magnet gears (MG).

[0087] Therefore, since there is no need for maintenance such as periodic replacement due to wear of existing mechanical gears, cost savings are possible. Additionally, damage to mechanical gears and overload of the power unit caused by overload of the driven and driven parts of power transmission can be prevented, and a clean environment can be provided through ultra-low noise, quiet operation, and prevention of dust caused by friction.

[0088] Meanwhile, referring to FIGS. 1 to 4, the roller shaft (400) can be rotatably supported on the front frame (120) and the rear frame (140) provided on both sides of the first direction (X-axis direction) of the housing (100), namely the front side and the rear side.

[0089] Specifically, the front frame (120) may include a front main frame (121), a front horizontal frame (122), a front connecting frame (123), and a front shaft frame (124).

[0090] The front main frame (121) can be installed to cover the front of the housing (100), the front horizontal frame (122) can be connected and installed in front of the front main frame (121) via a front connecting frame (123), and the front shaft frame (124) can be installed vertically on the front lower surface of the front horizontal frame (122).

[0091] The front shaft frame (124) may include an upper frame (124a) and a lower frame (124b), and a groove may be formed on the contact surface of the upper frame (124a) and the lower frame (124b), respectively.

[0092] When assembling the upper frame (124a) and the lower frame (124b), the groove of the upper frame (124a) and the groove of the lower frame (124b) form a single hole to rotatably support the front end of the roller shaft (400).

[0093] At this time, a ball bearing is interposed between the front end of the roller shaft (400) and the hole of the front shaft frame (124) to smoothly support the rotational movement of the roller shaft (400).

[0094] The rear frame (140) may include a rear main frame (141), a rear horizontal frame, a rear connecting frame (143), and a rear shaft frame (144), similar to the front frame (120).

[0095] The rear main frame (141) can be installed to cover the rear of the housing (100), the rear horizontal frame (142) can be connected to the rear of the rear main frame (141) via a rear connecting frame (143), and the rear shaft frame (144) can be installed vertically on the rear lower surface of the rear horizontal frame (142).

[0096] The rear shaft frame (144) may include an upper frame (144a) and a lower frame (144b), and a groove may be formed on the contact surface of the upper frame (144a) and the lower frame (144b), respectively.

[0097] When assembling the upper frame (144a) and the lower frame (144b), the groove of the upper frame (144a) and the groove of the lower frame (144b) form a single hole to rotatably support the rear end of the roller shaft (400).

[0098] At this time, a ball bearing is interposed between the rear end of the roller shaft (400) and the hole of the rear shaft frame (144) to smoothly support the rotational movement of the roller shaft (400).

[0099] Additionally, the rear end of the roller shaft (400) may extend and protrude through a hole in the rear shaft frame (144) to receive rotational power from the drive shaft (640) of the drive unit (600) described later.

[0100] At this time, the rear end of the roller shaft (400) that extends and protrudes through the hole of the rear shaft frame (144) may be equipped with a magnetic gear (MG) as described above, and the roller shaft (400) may be rotated by receiving power in a non-contact manner from the drive shaft (640) of the drive unit (600).

[0101] Referring further to FIGS. 7 and FIGS. 8, the spray unit (500) of the present embodiment is positioned in the internal space (S1) of the housing (100), specifically in the internal space (S2) of the internal frame (200), and can spray compressed air onto a cleaning object transported by a plurality of drive rollers (300).

[0102] The spraying unit (500) can be arranged in multiple units at predetermined intervals along a first direction (X-axis direction) in the internal space (S2) of the internal frame (200), and the spraying unit (500) can uniformly spray compressed air onto the entire surface of the object to be cleaned, which is transported by multiple drive rollers (300).

[0103] At this time, the injection units (500) may be arranged in multiple numbers at predetermined intervals along the first direction (X-axis direction), and positioned between each ring belt (900) so as not to overlap with the ring belt (900) in the direction of injection of compressed air (Z-axis direction).

[0104] Therefore, the compressed air of the spray unit (500) can be sprayed onto the object to be cleaned without interference with the ring belt (900) and the drive rollers (300, 301), so the cleaning power of the object to be cleaned can be further increased.

[0105] Although not illustrated in detail, the spray unit (500) can rotate in place in the internal space (S2) of the internal frame (200), and thus can form a vortex on the surface of the object to be cleaned when compressed air is sprayed onto the object to be cleaned.

[0106] As a result, the dry cleaning device (10) of the present embodiment can have a wider spraying and cleaning range by spraying compressed air with rotational force onto the object to be cleaned, and can more effectively separate and remove foreign substances remaining on the surface of the object to be cleaned.

[0107] The spray unit (500) can receive compressed air from the air supply pipe (250) through the air supply path (P) and spray compressed air onto the object to be cleaned.

[0108] At this time, one side of the air supply pipe (250) may be connected to the air supply path (P) and the other side may be extended through the upper surface of the housing (100).

[0109] For example, the air supply pipe (250) can be connected to an external air pump (not shown) and can receive compressed air from the air pump and supply compressed air to the air supply path (P).

[0110] Referring to FIGS. 2 to 5, the drive unit (600) of the present embodiment may include a drive motor (610), a pulley (620), a belt (630), and a drive shaft (640).

[0111] The drive motor (610) may be formed by combining, for example, a servo motor and a reduction gear, but is not limited thereto and may be formed by combining various types of motors and motors capable of rotating the roller shaft (400) at an appropriate speed.

[0112] At this time, the drive motor (610) can be installed spaced apart from the upper part of the rear horizontal frame (142) through a motor frame (601) installed vertically on the rear horizontal frame (142).

[0113] Pulleys (620) may be provided on the rotation axis and drive shaft (640) of the drive motor (610), respectively, and belts (630) may be connected to both pulleys (620) to transmit the rotational force of the drive motor (610) to the drive shaft (640).

[0114] The drive shaft (640) can be rotated through a power transmission structure consisting of a pulley (620) and a belt (630), but is not limited thereto and can be rotated through various power transmission structures. Of course, the drive shaft (640) can also be rotated by being connected to a direct drive motor (610).

[0115] As described above, the drive shaft (640) can transmit rotational force received from the drive motor (610) to the roller shaft (400) using a non-contact power transmission method using an orthogonal magnet gear (MG).

[0116] That is, a magnetic gear (MG) can be placed non-contactually adjacent to each other at the rear ends of the drive shaft (640) and the roller shaft (400), and the magnetic gear (MG) of the roller shaft (400) and the magnetic gear (MG) of the drive shaft (640) can be placed in an orthogonal configuration, that is, so that their mutual rotation axes form a 90-degree angle.

[0117] Accordingly, when the drive shaft (640) rotates due to the operation of the drive motor (610), the roller shaft (400) can be rotated in a non-contact manner through interaction via magnetic attraction and repulsion generated between the magnet gears (MG).

[0118] Ultimately, when the roller shaft (400) rotates through the drive unit (600), a plurality of rollers (300) can rotate, and the object to be cleaned can be transported in the second direction (Y-axis direction) to perform a dry cleaning process.

[0119] Referring to FIGS. 4, 7, and 8, the guide unit (700) of the present embodiment can be positioned between the outer surface of the inner frame (200) and the inner surface of the housing (100), that is, in each of the two suction areas (F2).

[0120] The guide unit (700) can guide compressed air, which has been sprayed onto a cleaning target and has performed a cleaning process, along with foreign matter, from the suction area (F2) to the internal space (S1) of the housing (100).

[0121] Specifically, the guide unit (700) may include a guide spacer (710) and a guide cover (720).

[0122] A guide spacer (710) can be placed between a plurality of drive rollers (300) along the first direction (X-axis direction) of the housing (100).

[0123] That is, guide spacers (710) are arranged in multiple numbers in the suction area (F2), and can be arranged in the space between the drive rollers (300) along the rotational axis direction of the roller shaft (400).

[0124] Accordingly, the guide spacer (710) can be positioned adjacent to the roller shaft (400) so as to eliminate interference with the drive roller (300).

[0125] At this time, a first suction hole (710a) adjacent to the outer surface of the inner frame (200) may be formed in the guide spacer (710), and the first suction hole (710a) may have a length along the rotational axis direction of the roller shaft (400).

[0126] Accordingly, foreign substances that flow between the driving rollers (300) among the foreign substances that fall off from the surface of the object to be cleaned by the compressed air of the spray area (F1) can be guided through the first suction hole (710a) of the guide spacer (710) and collected in the internal space (S1) of the housing (100).

[0127] At this time, among the two suction areas (F2), the suction area on the side where the object to be cleaned is introduced, that is, the right suction area of ​​the spray area (F1), may generate relatively more foreign matter than the suction area on the side where the object to be cleaned is discharged after cleaning, that is, the left suction area of ​​the spray area (F1).

[0128] Accordingly, the guide spacer (710) positioned in the right suction area (F2) of the injection area (F1) preferably has multiple first suction holes (710a) arranged at both ends along the direction in which the object to be cleaned is transported, that is, the second direction (Y-axis direction) of the housing (100).

[0129] The guide cover (720) can be positioned to cover the upper portion of the drive rollers (300) along the first direction (X-axis direction) of the housing (100).

[0130] That is, the guide covers (720) are arranged in multiple numbers in the suction area (F2), and can be placed between the guide spacers (710) and can cover the upper portions of the drive rollers (300) exposed to the suction area (F2).

[0131] Accordingly, the guide cover (720) may have a roof shape in which the front and rear lower ends are each supported at the ends of the guide spacer (710) along the first direction (X-axis direction) of the housing (100).

[0132] Additionally, a second suction hole (720a) may be formed on the front surface, such as the upper surface and side surface of the guide cover (720), and the second suction hole (720a) may have a length along the first direction (X-axis direction) of the housing (100) and may be formed in multiple numbers spaced apart along the second direction (Y-axis direction) of the housing (100).

[0133] Accordingly, among the foreign substances that fall off from the surface of the object to be cleaned by the compressed air of the spray area (F1), the foreign substances flowing into the driving roller (300) area are guided into the inside of the guide cover (720) and then can be collected into the internal space (S1) of the housing (100) through the second suction hole (720a).

[0134] At this time, foreign matter passing through the second suction hole (720a) of the guide cover (720) that is opened toward the upper part of the guide spacer (710) can be easily collected into the internal space (S1) of the housing (100) by the suction airflow formed on the upper part of the guide spacer (710).

[0135] Meanwhile, compressed air containing foreign substances sucked into the internal space (S1) of the housing (100) can be guided to the upper part of the internal space (S1) of the housing (100) through the through hole (710a) of the guide spacer (710) and the through hole (720a) of the guide cover (720) and collected.

[0136] Compressed air containing foreign substances collected in the upper part of the internal space (S1) of the housing (100) can be collected in the discharge section (800).

[0137] Referring to FIGS. 1, 7, and 8, the discharge unit (800) of the present embodiment is arranged to communicate with the internal space (S1) of the housing (100), so that compressed air containing foreign substances collected in the internal space (S1) of the housing (100) can be collected.

[0138] The discharge section (800) can be arranged in multiple units spaced apart at predetermined intervals along the first direction (X-axis direction) of the housing (100).

[0139] The discharge section (800) can be connected to a discharge duct (810) having a length in the first direction (X-axis direction) of the housing (100).

[0140] At this time, the exhaust duct (810) may be formed integrally with the exhaust section (800), but is not limited thereto and may be manufactured individually and assembled together.

[0141] The discharge portion (800) can be installed in a plurality of coupling grooves (101) formed on the upper surface of the housing (100) via a fastening member or the like.

[0142] Although not described in detail, the exhaust duct (810) may be connected to an external dust collector or a foreign matter collection device, and the compressed air containing foreign matter collected in the exhaust section (800) may be discharged to the external dust collector or a foreign matter collection device through the exhaust duct (810).

[0143] A dry cleaning device (10) according to one embodiment of the present invention can perform a cleaning process while smoothly transporting a cleaning target using a plurality of driving rollers (300), thereby enabling dry cleaning of both sides as well as one side of a cleaning target and continuous cleaning of a plurality of cleaning targets.

[0144] In addition, the dry cleaning device (10) according to one embodiment of the present invention can provide a wider spraying and cleaning range by spraying compressed air with rotational force onto the object to be cleaned, and can more effectively separate and remove foreign substances remaining on the surface of the object to be cleaned.

[0145] In addition, a dry cleaning device (10) according to one embodiment of the present invention can minimize surface damage to a cleaning target, such as fine scratches, during the cleaning process by uniformly and densely arranging a plurality of driving rollers (300) throughout the entire cleaning area corresponding to the opening of the housing (100), thereby preventing contact between the cleaning target and the device.

[0146] In addition, the dry cleaning device (10) according to one embodiment of the present invention can prevent the problems of conventional mechanical gears by rotating the roller shaft (400) in a non-contact rotational transmission manner using a magnet gear (MG), and can reduce maintenance costs and provide a clean environment for the cleaning process.

[0147] Hereinafter, a dry cleaning device according to another embodiment of the present invention will be described in more detail as follows.

[0148] FIG. 9 is a rear bottom perspective view of a dry cleaning device according to another embodiment of the present invention, FIG. 10 is an enlarged perspective view of section C of FIG. 9, and FIG. 11 is a longitudinal cross-sectional view of a dry cleaning device according to another embodiment of the present invention.

[0149] Referring to FIGS. 9 to 11, a dry cleaning device (10') according to another embodiment of the present invention may include a housing (100), an inner frame (200), a plurality of driving rollers (300'), a roller shaft (400'), a spray unit (500), a driving unit (600), a guide unit (700), and a discharge unit (800).

[0150] The housing (100), inner frame (200), spray unit (500), driving unit (600), guide unit (700), and discharge unit (800) of the dry cleaning device (10') according to another embodiment of the present invention are applicable in the same way as the dry cleaning device (10) of the previously described embodiment, so a description thereof will be omitted or brief.

[0151] In this embodiment, a plurality of drive rollers (300') can be placed in both the suction area (F2) and the injection area (F1).

[0152] To this end, the roller shaft (400') of the present embodiment may include a central roller shaft (401'), a first roller shaft (410'), and a second roller shaft (420').

[0153] The central roller shaft (401') has a rotation axis along the first direction (X-axis direction) of the housing (100) and can be positioned in the center of the injection area (F1).

[0154] Additionally, multiple central drive rollers (301') may be spaced apart along the rotation axis on the central roller shaft (401').

[0155] The first roller shaft (410') has a rotation axis along the first direction (X-axis direction) of the housing (100) and is positioned in both suction areas (F2), and can be positioned adjacent to the injection area (F1).

[0156] That is, the first roller shaft (410') can be spaced apart on each side of the central roller shaft (401') along the second direction (Y-axis direction) adjacent to the injection area (F1).

[0157] Additionally, on the first roller shaft (410'), a plurality of first drive rollers (310') corresponding to the central drive roller (301') can be spaced apart along the rotation axis.

[0158] The second roller shaft (420') has a rotation axis along the first direction (X-axis direction) of the housing (100) and can be spaced apart from the first roller shaft (410') on the opposite side of the central roller shaft (401').

[0159] Additionally, a plurality of second drive rollers (320') may be spaced apart along the rotation axis on the second roller shaft (420').

[0160] At this time, the second roller shaft (420') may be additionally positioned on the outside of the two suction areas (F2), that is, on the outside of the opening of the housing (100), and by additionally positioning the second roller shaft (420'), a plurality of second drive rollers (320') may be additionally positioned on the outside of the two suction areas (F2), that is, on the outside of the opening of the housing (100).

[0161] Accordingly, through a plurality of second drive rollers (320') additionally positioned outside the opening of the housing (100), the object to be cleaned can be more easily introduced into the suction area (F2), and the object to be cleaned after the cleaning process is completed can be more easily discharged to the outside of the suction area (F2).

[0162] Ultimately, the dry cleaning device (10') of the present embodiment can smoothly transport and clean while minimizing surface damage to the object to be cleaned because a plurality of drive rollers (300') can be uniformly and densely arranged in the entire cleaning area including the spraying area (F1) and the suction areas (F2) along the second direction (Y-axis direction).

[0163] In particular, the dry cleaning device (10') of the present embodiment has a plurality of central drive rollers (301') arranged in the center of the spraying area (F1), so that the object to be cleaned can be stably supported even under the influence of a strong airflow of compressed air in the spraying area (F1) and the adjacent suction areas (F2), thereby minimizing physical damage such as sagging of the object to be cleaned.

[0164] Meanwhile, a ring belt (900') may be connected to a central drive roller (301') and a pair of first drive rollers (310') that are adjacent to each other along the second direction.

[0165] Specifically, the ring belt (900') can be sequentially inserted and connected to the inner outer surface of the central drive roller (301') and a pair of first drive rollers (310').

[0166] For example, a groove may be formed on the outer surface of the central drive roller (301') and the first drive roller (310'), and the ring belt (900') may be installed by being inserted into the groove formed in each drive roller (301', 310').

[0167] At this time, although not illustrated in detail, the depth of the grooves of each drive roller (301', 310') may be formed to be greater than the thickness of the ring belt (900'), so that the ring belt (900') may not protrude outward from the outer surface of each drive roller (301', 310').

[0168] Therefore, when the object to be cleaned is transported through the first drive roller (310') and the central drive roller (301'), contact with the ring belt (900') is minimized, thereby minimizing surface damage to the object to be cleaned caused by the ring belt (900').

[0169] In addition, when the object to be cleaned is a thin sheet or a light product, physical damage such as sagging of the object to be cleaned can be minimized between the central drive roller (301') and the first drive roller (310') due to the strong airflow of compressed air.

[0170] Meanwhile, in the dry cleaning device (10') of the present embodiment, the central drive roller (301') can be rotated by receiving rotational force non-contactually using a magnet gear drive method with the drive shaft (640) of the drive unit (600) together with the first drive roller (310') and the second drive roller (320').

[0171] A dry cleaning device (10') according to another embodiment of the present invention also performs a cleaning process while smoothly transporting a cleaning target using a plurality of drive rollers (300'), thereby enabling dry cleaning of both sides of a cleaning target simultaneously as well as one side, and enabling continuous cleaning of a plurality of cleaning targets.

[0172] In addition, a dry cleaning device (10') according to another embodiment of the present invention can provide a wider spraying and cleaning range by spraying compressed air with rotational force onto a cleaning target, and can more effectively separate and remove foreign substances remaining on the surface of the cleaning target.

[0173] In addition, a dry cleaning device (10') according to another embodiment of the present invention can minimize surface damage to the object to be cleaned, such as fine scratches, during the cleaning process by uniformly and densely arranging a plurality of driving rollers (300') throughout the entire cleaning area corresponding to the opening of the housing (100), thereby preventing contact between the object to be cleaned and the device.

[0174] In addition, a dry cleaning device (10') according to another embodiment of the present invention can prevent the problems of conventional mechanical gears by rotating the roller shaft (400') in a non-contact rotational transmission manner using a magnet gear (MG), and can reduce maintenance costs and provide a clean environment for the cleaning process.

[0175] As such, the present invention has been described with reference to an embodiment illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and variations of the embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0176] 10: Dry cleaning device 100: Housing 120: Front frame 140: Rear frame 200: Inner frame 250: Air supply pipe 300: Drive roller 310: First drive roller 320: Second drive roller 400: Roller shaft 410: 1st roller shaft 420: 2nd roller shaft 500: Injection unit 600: Driving unit 610: Drive motor 620: Pulley 630: Belt 640: Drive shaft 700: Guide Unit 710: Guide Spacer 720: Guide cover 800: Discharge section 810: Exhaust duct 900: Ring belt S1: Internal space of the housing S2: Internal space of the internal frame F1: Injection area F2: Intake area P: Air supply Euro MG: Magnet gear

Claims

Claim 1 A housing having an opening on one side, a length and width along a first direction and a second direction, and an internal space; a plurality of drive rollers rotatably disposed on the side of the opening of the housing and transporting a cleaning target disposed on the outside of the opening along the second direction of the housing; and a spraying unit disposed in the internal space of the housing to form a spraying area and spraying compressed air onto the cleaning target transported by the plurality of drive rollers into the spraying area; a drive unit for rotating the plurality of drive rollers; and a ring belt connected to a pair of drive rollers adjacent to each other along the second direction and traversing the spraying area in the second direction. A dry cleaning device comprising: a guide unit disposed on the inner surface of the housing and guiding the flow of the compressed air; a groove formed on the outer surface of the pair of drive rollers into which the ring belt is inserted, the depth of the groove being greater than the thickness of the ring belt, and the ring belt not protruding outside the outer surface of the pair of drive rollers; and the guide unit comprising: a plurality of guide spacers disposed between the plurality of drive rollers along the first direction and having through holes through which the compressed air passes; and a plurality of guide covers disposed between the plurality of guide spacers, covering a portion of the plurality of drive rollers and having through holes through which the compressed air passes. Claim 2 A dry cleaning device according to claim 1, comprising: a roller shaft having a rotation axis parallel to the first direction, which rotates by receiving power from the drive unit, and wherein a plurality of drive rollers are spaced apart from each other along the direction of the rotation axis. Claim 3 A dry cleaning device according to claim 2, wherein the roller shafts are spaced apart along the second direction and arranged in multiple numbers, excluding the spray area where compressed air is sprayed through the spray unit. Claim 4 delete Claim 5 A dry cleaning device according to claim 2, wherein the driving unit comprises: a driving motor disposed on the outer side of one end of the housing along the first direction; and a driving shaft that receives driving force from the driving motor and rotates, and transmits rotational force to the roller shaft. Claim 6 A dry cleaning device according to claim 5, wherein the drive shaft and the roller shaft are connected to enable non-contact transmission of rotational force using a magnet gear drive method. Claim 7 A dry cleaning device according to claim 2, further comprising an inner frame disposed in the inner space of the housing; wherein the inner frame has an opening on one side, has an inner space in which the spray unit is disposed, and includes an air supply channel for supplying the compressed air to the spray unit. Claim 8 delete Claim 9 delete Claim 10 In claim 2, the roller shaft comprises: a central roller shaft disposed in the center of a spray area where compressed air is sprayed through the spray unit; a first roller shaft each spaced apart on both sides of the central roller shaft along the second direction adjacent to the spray area; and a second roller shaft spaced apart on one side of the first roller shaft in the opposite direction to the central roller shaft; a dry cleaning device. Claim 11 A dry cleaning device according to claim 10, further comprising a ring belt connected to the driving roller of the central roller shaft and the driving roller of the first roller shaft along the second direction. Claim 12 A dry cleaning device according to claim 11, wherein the ring belt is inserted into the inner outer surface of the drive rollers. Claim 13 A dry cleaning device according to claim 1, comprising: a discharge unit disposed in communication with the internal space of the housing, which collects foreign substances together with the compressed air of the internal space and discharges them to the outside.

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