Wiper cleaner for screen printer capable of reducing cleaning paper and mask cleaning method using same

Abstract

The present invention relates to a wiper cleaner for a screen printer capable of reducing cleaning paper, and a mask cleaning method using same, wherein the length of cleaning paper used for single cleaning is significantly reduced to achieve the effect of reducing cleaning paper with high economic benefits and cost savings, and as the length used for single cleaning required when masks are cleaned with cleaning paper is reduced, downtime due to the replacement time for cleaning paper rolls used per day may be minimized, thereby enabling reduction of tact time and achieving the effect of increasing overall production process efficiency and shortening the production time.

Description

Screen printer wiper cleaner capable of reducing cleaning paper usage and mask cleaning method using the same

[0001] The present invention relates to a wiper cleaner for a screen printer capable of reducing cleaning paper and a mask cleaning method using the same, and more particularly, to a wiper cleaner for a screen printer capable of reducing cleaning paper and a mask cleaning method using the same, which drastically reduces the actual cleaning range of a paper roll used in a mask cleaning operation to remove solder remaining on a mask after a solder printing process of a screen printer, thereby enabling one day of mask cleaning operation with one paper roll, and thereby reducing the number of paper roll replacements, thereby drastically reducing downtime, thereby reducing the economic burden of using expensive paper rolls, reducing the generation of paper roll waste, thereby reducing carbon emissions through prevention of environmental pollution, reducing the tack time, which is the total process time, thereby improving productivity, and improving worker workload by reducing the replacement process due to paper roll replacement.

[0002] Typically, mounting electronic components on a printed circuit board requires a screen printing process to apply cream solder to the board's surface. This process involves placing a mask with openings formed at specific locations in close contact with the board surface and applying cream solder, thereby selectively applying the cream solder to locations on the board surface corresponding to the openings. During this screen printing process, the surface of the mask, which comes into close contact with the printed circuit board surface, may become partially contaminated with cream solder due to repeated screen printing processes.

[0003]

[0004] If the surface of the mask in contact with the substrate becomes contaminated with cream solder, the precision of the screen printing process deteriorates and the likelihood of defective products increases. This is because the thickness of the cream solder applied to the mask surface reduces adhesion between the mask and the substrate, preventing the cream solder from being properly applied to the correct location on the substrate surface.

[0005]

[0006] To prevent mask contamination, screen printing equipment is equipped with a mask cleaning device. Mask cleaning devices can take a variety of forms, but typically involve applying cleaning paper wound on a roller to the mask surface to perform the cleaning action. The mask cleaning device is operated during repeated screen printing operations to temporarily suspend the screen printing process and clean the mask surface.

[0007]

[0008] The mask cleaning process described above typically involves three types of cleaning devices: one that sprays a cleaning solution and generates ultrasonic waves, and the other that utilizes roller brushes and paper rolls. While this process of cleaning masks using ultrasonic waves facilitates the removal of impurities, it also requires large-scale equipment, leading to increased equipment costs and space constraints. Furthermore, the cleaning solution must be replaced periodically or post-processing must be considered, resulting in increased equipment requirements and a significant financial burden.

[0009]

[0010] Second, in the case of roller brushes, since the cleaning solution is applied to the mask surface and impurities are removed through the roller brush, there is a risk of poor mask cleaning due to residual cleaning solution remaining after the cleaning solution dries, and since the surface is repeatedly swept by the roller brush, there is a problem of defective products occurring due to damage to the mask surface.

[0011]

[0012] Thirdly, the one that has been recently disclosed and used is a paper roll-shaped one in which a cleaning solution is applied and wound around a roller, and the paper roll is configured to contact the mask surface as it is unwound from the roller and remove foreign substances attached to the mask surface. This allows for simple and quick solder removal, while also allowing for rapid mask washing and drying. Since the cleaning solution is not directly used, there is no need to install a cleaning solution discharge facility, making it more economical. In addition, unlike a roller brush that sweeps the mask surface, it attaches residual solder by contact, so there is no damage to the mask or residual cleaning solution left behind, and thus it is currently the most widely used.

[0013]

[0014] However, although the above paper roll has improved upon the shortcomings of previous cleaning by spraying a cleaning solution or cleaning by a roll brush, the following problems still remain.

[0015]

[0016] First, it is quite difficult to install paper rolls, so it requires a skilled technician, which increases labor costs. Second, when replacing paper rolls, the entire process must be stopped, and even for a skilled technician, the replacement process takes a considerable amount of time, which reduces production efficiency due to the increased downtime of the entire process. In other words, after the cleaning process using paper rolls, the paper rolls usually need to be replaced 4 to 5 times a day, and since it takes at least 20 minutes to replace the paper rolls in the entire process, even if the entire process is replaced 4 to 5 times in a day, the entire process is stopped for 80 to 100 minutes, which significantly reduces productivity efficiency.

[0017]

[0018]

[0019] *Also, while the advantage of mask cleaning with paper is rapid drying, even when the solder is melted and removed with a cleaning solution applied to the paper, the cleaning solution often remains on the mask surface. However, since there is no dedicated device to remove this residual cleaning solution, and the method is limited to using paper, there is a risk of mask contamination due to the cleaning solution remaining due to rapid drying.

[0020]

[0021] Therefore, the paper roll replacement process, as mentioned above, increases the total daily downtime, resulting in decreased productivity and problems with mass production. Furthermore, proper assembly of paper rolls is difficult for unskilled technicians, leading to increased labor costs and mask contamination due to residual cleaning solution applied to the paper.

[0022]

[0023] Here's a look at the current domestic and international situation regarding paper rolls, which was previously explained. First, paper rolls, which are still in use today, are mainly used in workplaces that apply surface mount technology (SMT: Surface Mounter Technology), which includes a screen printing process, or workplaces that perform post-processing (OSAT: Outsourced Semiconductor Assembly and Test), which productize wafer dies into semiconductor chips, package them in a way suitable for the substrate, and then perform wafer testing, packaging testing, and module testing to create finished products.

[0024]

[0025] First of all, the paper rolls used in the SMT and OSAT companies mentioned above are currently being used with satisfactory cleaning quality, and looking at the specifications of the paper rolls currently in use, they are generally used about 110 times (based on PCB Unit) based on the total length of 15 m, and 135 mm of paper roll is used for one wash. This is because the length of the paper cannot help but be long because the residual solder on the mask surface is removed through a single blade while the paper is simply immersed in the cleaning solution, and since the mask is cleaned using only the paper, the length of the paper can be increased, but there is no way to reduce it.

[0026]

[0027] Accordingly, in terms of the specifications for the total length of such paper rolls and the length for one use, SMT workplaces use and replace a 15m paper roll approximately 5 times a day, and OSAT workplaces use and replace it 60 times a day.

[0028]

[0029] That is, when looking at the number of times the paper rolls are replaced for washing masks in conventional wiper cleaners using paper rolls, they are replaced 5 to 60 times, and since this paper roll replacement is performed while the machine is stopped, it is true that it takes up a significant portion of the production time.

[0030]

[0031] Therefore, in order to minimize this downtime, the existing paper roll is used, but the length of paper required for mask cleaning is reduced, thereby reducing the number of daily replacements, which is self-evident and has a great effect on increasing productivity efficiency and shortening production time.

[0032]

[0033] However, there is currently no development of a wiper cleaning device that can drastically reduce the amount of paper rolls used, and SMT and OSAT workplaces are in need of a wiper cleaning device that can drastically increase the number of times a paper roll is used, thereby reducing the number of replacements, and furthermore, can clean with just one paper roll during a day's operation.

[0034] 〔Prior Art Literature〕

[0035] 〔Patent Documents〕

[0036] (Patent Document 1) Republic of Korea Patent Registration No. 10-0693177, registration date March 5, 2007.

[0037] (Patent Document 2) Republic of Korea Patent Registration No. 10-1403081, registration date May 27, 2014.

[0038] Accordingly, the present invention was created to solve the above-described problems, and its purpose is to provide a wiper cleaner for a screen printer capable of reducing cleaning paper with high economic benefits and cost savings by drastically reducing the length used for one cleaning of the cleaning paper, and a mask cleaning method using the same.

[0039]

[0040] In addition, the present invention has another purpose of providing a wiper cleaner for a screen printer and a method for cleaning a mask using the same, which can minimize downtime due to the time required to replace a cleaning paper roll used per day by reducing the length required for a single wash when cleaning the cleaning paper, thereby reducing the tact time, thereby increasing the efficiency of the entire production process and shortening the production time.

[0041]

[0042] Furthermore, the present invention aims to provide a screen printer wiper cleaner and a mask cleaning method using the same, which can reduce cleaning paper by significantly reducing the amount of paper rolls used, thereby minimizing waste generated from the use of paper rolls, thereby preventing direct and indirect environmental pollution, thereby enabling carbon-saving operation that can reduce carbon emissions, and reducing the number of paper roll replacements, thereby reducing the replacement process for paper roll replacement, thereby improving worker workload.

[0043] In order to achieve the above purpose, a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention comprises: a base (100) formed long in the left-right longitudinal direction, a slide hole (102) penetrating upward and downward formed symmetrically left-right, and provided to move toward the mask side and move back and forth along the mask surface; a paper control means (200) formed in a front-back and back-and-forth direction orthogonal to the left-right longitudinal direction of the base (100), and provided so that a cleaning paper (P) is wound around it and is unwound and wound and reversely rotated in a direction orthogonal to the left-right longitudinal direction of the base for mask cleaning, thereby supplying and recovering the cleaning paper and maintaining a cleaning state of the cleaning paper; When the cleaning paper is supplied to the cleaning section through the above paper control means (200), the cleaning paper for removing residual solder of the mask is vertically raised, and the cleaning paper of the cleaning section is in a cleaning state with a flat surface through reverse rotation by the paper control means (200), and the cleaning paper of the cleaning section having a flat surface is raised and lowered on the upper surface of the base (100) so that it comes into close contact with the mask and is cleaned; and the cleaning liquid spraying means (400) is provided on one side of the wiper cleaning means (300) to which the cleaning paper (P) before the cleaning operation is supplied, and is provided with a plurality of spray nozzles (402) for spraying a cleaning liquid for mask cleaning onto the cleaning paper (P) supplied to the cleaning position so that the cleaning liquid is applied to the cleaning paper before the cleaning operation and wetted.

[0044]

[0045] Here, the paper control means (200) comprises a support roller (210) formed long in the left-right longitudinal direction and on which cleaning paper (P) before cleaning work is wound in a roll shape on one side of the base; a receive roller (220) formed long in the left-right longitudinal direction and on which cleaning paper (P) after cleaning work is wound in a roll shape on the other side of the base; and a forward rotation adjustment motor (230) coupled to and driven on one side of the axial direction of the receive roller so that the cleaning paper (P) supplied from the support roller (210) is unwound for cleaning and wound on the receive roller (220). It is characterized in that it is formed by a reverse rotation adjustment motor (240) coupled to one side of the axial direction of the support roller (210) so that only the cleaning paper (P) section to be used for mask cleaning comes into contact with the mask, and the cleaning paper (P) section not used for cleaning is not contaminated by solder remaining on the mask, and the cleaning paper of the cleaning section is raised by the wiper cleaning means (300), and the cleaning paper wound on the support roller side is temporarily released and stretched, and the stretched cleaning paper (P) is rotated in reverse so that the cleaning paper section for cleaning the mask forms a flat surface.

[0046]

[0047] Meanwhile, the wiper cleaning means (300) comprises at least two wiper blades (310) formed long to correspond to the left-right width of the cleaning paper (P) in an unfolded state before the cleaning operation supplied from the paper control means (200); a wiper squeegee (320) formed long to correspond to the left-right longitudinal direction of the wiper blade (310) and formed of silicone to wipe away mask residual cleaning solution and residual solder of the cleaning solution delivered from the cleaning paper (P); A top vacuum housing (330) formed long in the left-right longitudinal direction, and having a wiper connecting portion (332) formed on the upper surface with a length corresponding to the left-right width of a cleaning paper so that a wiper blade (310) and a wiper squeegee (320) can be replaced, and having a plurality of vacuum holes (334) formed through the top vacuum housing (330) so that residual solder of a mask is absorbed and removed by the cleaning paper between the wiper blade (310) and the wiper squeegee (320) that are connected to the wiper connecting portion (332); a bottom vacuum housing (340) formed long with a length corresponding to the top vacuum housing (330), and having a vacuum suction hole (342) that is connected to the vacuum hole (334) so ​​that vacuum suction is performed by the operation of an external compressor; It is characterized by being formed with a push cylinder (350) that is formed symmetrically left and right on the upper surface of the base (100), and the upper end of the push rod (352) is coupled to the lower surface of the batum vacuum housing (340) so that the batum vacuum housing (340) is operated to rise and fall according to the rise and fall of the push rod (352).

[0048]

[0049] Here, a load level adjustment unit (360) is formed to adjust the height of the push rod (352) of the push cylinder (350) so that the height of the cleaning paper raised by the wiper cleaning means (300) is controlled to correspond to the contact position of the cleaning paper with the mask for removing residual solder on the mask by adjusting the vertical distance of the batum vacuum housing (340), and the load level adjustment unit (360) is formed with a level shaft (362) whose upper end is fixedly coupled to the lower surface of the batum vacuum housing (340) and whose lower end is fitted so as to move up and down along the slide hole (102) of the base (100) and protrudes from the lower surface of the base; It is characterized by being formed with a level adjustment ring (364) having a slip hole (366) formed in the center so as to move up and down along the lower outer periphery of the level shaft (362) protruding from the lower surface of the base, and a stop bolt hole (368) formed perpendicularly to the slip hole (366) so as to be fixed in a position moved up and down along the outer periphery of the level shaft.

[0050]

[0051] Furthermore, it is preferable that a guide roller (370) is further formed so that both ends of the cleaning paper supply side of the paper control means of the wiper cleaning means (300) are idling and are coupled, and the cleaning paper (P) is guided in an unfolded state toward the wiper squeegee (320) side of the wiper cleaning means (300).

[0052]

[0053] Here, the wiper blades (310) are formed at least two times within 5.0 mm, and the cleaning paper (P) used to remove residual solder of the mask between the wiper blades (310) is characterized in that it moves stepwise by 2.5 mm according to the driving of the forward rotation adjustment motor (230).

[0054]

[0055] Meanwhile, a counting means (500) is further formed on the upper surface of the base (100) between the wiper cleaning means (300) and the cleaning paper discharge side of the paper control means to measure the length of use of the cleaning paper, and the counting means (500) comprises: a guide gear roller (510) having radial guide teeth formed long in the left and right longitudinal directions so that the cleaning paper (P) after the cleaning operation is guided and discharged at regular intervals; and a shaft block (520) provided so that the left and right ends of the guide gear roller (510) are axially coupled so as to be able to rotate idly; It is characterized in that it is formed with a counting rotation member (530) which is coupled to the outside of one of the shaft blocks (520) to which the above guide gear roller (510) is coupled and has radial counting wings (532) formed thereon so as to rotate together with the rotation of the guide gear roller (510) to measure the discharge length of the cleaning paper; a counting sensor (540) coupled to the shaft block directly below the counting wings so as to measure the length of use of the cleaning paper by measuring the number of counting wings (532) according to the rotation of the counting wings of the above counting rotation member (530); and a control unit which measures the length of use of the cleaning paper through the measurement value of the counting sensor (540) and controls the replacement time of the cleaning paper roll through the same.

[0056]

[0057] Here, a detection sensor (600) is further formed to sense the loosening of the cleaning paper toward the center of one side of the base (100) on the side where the cleaning paper (P) is supplied before the cleaning operation of the paper control means (200), and the detection sensor (600) is characterized in that it continuously detects the supplied cleaning paper and when the supply of the final cleaning paper is completed and the cleaning paper detection signal is cut off, it is formed to compare the cleaning paper length transmitted from the counting sensor (540) with the cleaning paper length and generate a cleaning replacement signal from the control unit.

[0058]

[0059] Meanwhile, a method for cleaning a mask using a wiper cleaner of a screen printer capable of reducing cleaning paper rolls according to the present invention comprises a cleaning paper setting step (S100) for washing a mask, in which cleaning paper (P) before cleaning is wound on a support roller (210) of a paper control means (200) formed before and after a base (100), the leading edge of the cleaning paper (P) wound on the support roller is released, and the cleaning paper (P) passes through a guide roller (370), a cleaning liquid spray means (400), a wiper squeegee (320) of a wiper cleaning means (300), a vacuum hole (334), and at least two wiper blades (310) provided, and then passes through a guide gear roller (510) of a counting means (500) and is wound on a receiving roller (220); A mask washing preparation step 1 (S200) in which a cleaning liquid for washing a mask is sprayed onto a cleaning paper (P) set on a wiper cleaner through a cleaning liquid spraying means (400) provided between the wiper cleaning means (300) and the support roller (210) side through the above cleaning paper setting step, and the receiving roller (220) rotates by the driving of the forward rotation adjustment motor (230), and the cleaning paper to which the cleaning liquid has been applied moves toward the mask side, including the wiper cleaner including the base positioned above the wiper blade (310) and the wiper squeegee (320) of the wiper cleaning means (300); A mask washing preparation step 2 (S300) in which a cleaning paper (P) on which a cleaning liquid of a wiper cleaner is applied and prepared to move toward the mask to be washed through the mask washing preparation step 1 is vertically raised together with the cleaning paper (P) by the operation of the push rod (352) of the push cylinder (350) adjusted to a height where it comes into contact with the mask by the load level adjustment unit (360) while the cleaning paper is released from the support roller (210) to correspond to the vertical movement height of the wiper cleaning means (300);Through the mask washing preparation step 2 above, the wiper cleaning means (300) rises toward the mask side, and the cleaning paper (P) released from the support roller (210) is recovered toward the support roller side by the reverse rotation adjustment motor (240) driving the support roller (2100) to reversely rotate, and the cleaning paper (P) is returned to the position located on the wiper blade (310) in the mask washing preparation step 1, and a mask washing preparation step 3 (S400) is performed so that the cleaning paper maintains a flat tension and evenly contacts the mask surface; when the mask washing preparation is completed through the mask washing preparation step 3 above, the entire wiper cleaner moves toward the cleaning paper setting step side as the cleaning paper contacts the mask, and during the movement process, the first cleaning is performed to remove the cleaning liquid attached to the mask surface by the wiper squeegee (320), and the residual solder is adsorbed through the vacuum hole (334). A mask washing step (S500) in which a secondary washing is performed to remove solder and a tertiary washing is performed to completely remove residual solder from the final mask by a wiper blade (310); and when the mask washing step is completed, a wiper cleaner is returned to the cleaning paper setting step position, and a wiper cleaner return setting step (S600) in which a forward rotation adjustment motor (230) is driven so that the cleaning paper (P) is wound onto a receiving roller (220) by a distance corresponding to half the distance between two wiper blades (310); is repeated to wash the mask.

[0060]

[0061] Here, the wiper blades (310) are formed at least two times within 5.0 mm, and the cleaning paper (P) moved between the wiper blades is characterized in that it is moved stepwise by 2.5 mm through the wiper cleaner return setting step.

[0062] The present invention has the effect of significantly reducing the length used for a single wash of the cleaning paper, thereby achieving an economical advantage and high saving effect in terms of cleaning paper, and by reducing the length used for a single wash of the cleaning paper required for mask washing, the downtime due to the time to replace the cleaning paper roll used per day is minimized, thereby reducing the tact time, thereby increasing the efficiency of the entire production process and shortening the production time.

[0063]

[0064] Meanwhile, the present invention has the advantage of significantly reducing the amount of cleaning paper used, thereby minimizing waste generated from the use of paper rolls, thereby preventing direct and indirect environmental pollution, thereby enabling carbon-saving operation that reduces carbon emissions, and reducing the number of paper roll replacements, thereby reducing the replacement process for paper roll replacement, thereby improving worker workload.

[0065] FIG. 1 is a perspective view of the entire wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention, from the receiving roller side.

[0066] FIG. 2 is a perspective view of the entire support roller side of the wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention.

[0067] Figure 3 is an exploded perspective view of a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention.

[0068] Figure 4 is a side cross-sectional view of a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention.

[0069] Figure 5 is a block diagram of a mask cleaning method using a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention.

[0070] Figures 6 to 9 are side views showing the step-by-step operation status of a mask cleaning method using a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention.

[0071] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described below in detail, along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms.

[0072] In this specification, the embodiments are provided to ensure a complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. Furthermore, the present invention is defined solely by the scope of the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described to avoid ambiguity in the interpretation of the present invention.

[0073] Throughout the specification, the same reference numerals refer to the same elements. Furthermore, the terms used (or referred to) in this specification are for the purpose of describing embodiments and are not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise. Furthermore, the phrase "comprises (or comprises)" does not exclude the presence or addition of one or more other elements and operations.

[0074] Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless otherwise defined.

[0075]

[0076] Hereinafter, with reference to the attached drawings, the technical features of a wiper cleaner for a screen printer capable of reducing cleaning paper according to the present invention and a mask cleaning method using the same will be specifically described according to an embodiment.

[0077]

[0078] FIG. 1 is a perspective view of the entire screen printer wiper cleaner capable of reducing cleaning paper according to the present invention from the receiving roller side, FIG. 2 is a perspective view of the entire screen printer wiper cleaner capable of reducing cleaning paper according to the present invention from the support roller side, FIG. 3 is an exploded perspective view of the screen printer wiper cleaner capable of reducing cleaning paper according to the present invention, FIG. 4 is a side cross-sectional view of the screen printer wiper cleaner capable of reducing cleaning paper according to the present invention, FIG. 5 is a block diagram of a mask cleaning method using a screen printer wiper cleaner capable of reducing cleaning paper according to the present invention, and FIGS. 6 to 9 are side views showing step-by-step operation states of a mask cleaning method using a screen printer wiper cleaner capable of reducing cleaning paper according to the present invention.

[0079]

[0080] The wiper cleaner of the screen printer capable of reducing cleaning paper according to the present invention has a high economic advantage and saving effect by drastically reducing the length used for one cleaning of the cleaning paper, and by reducing the length used for one cleaning required for cleaning the cleaning paper, the downtime due to the time to replace the cleaning paper roll used per day is minimized, and thereby the tact time can be reduced, which not only increases the efficiency of the entire production process and shortens the production time, but also significantly reduces the amount of cleaning paper used, thereby minimizing the generation of waste due to the use of paper rolls, and thus direct and indirect environmental pollution can be prevented, and thus carbon-saving operation that can reduce carbon emissions is possible, and since the number of paper roll replacements is reduced, the replacement process due to paper roll replacement is reduced, and thus the workload of the operator can be improved, as shown in FIGS. 1 to 4, a base (100), a paper control means (200), a wiper cleaning means (300), and a cleaning solution are provided. It consists of a spraying means (400).

[0081]

[0082] The above base (100) is designed to operate as a single wiper cleaner with the paper control means (200), wiper cleaning means (300), and cleaning liquid spray unit (400) described below, and is formed long in the left-right longitudinal direction, and the slide hole (102) penetrating upward and downward is formed symmetrically left-right, and is designed to move toward the mask side and move back and forth along the mask surface. That is, the base (100) is designed to move toward the mask side through a transfer means (not shown) capable of reciprocating forward and backward, such as a rail, transfer screw, cylinder, etc., for mask cleaning.

[0083]

[0084] The above paper control means (200) is provided to transport the cleaning paper in a wound state toward the wiper cleaning means (300) described later for cleaning, and to form a flat surface for a cleaning section through tension control for mask cleaning, and is formed before and after the orthogonal direction to the left and right longitudinal direction of the base (100), and the cleaning paper (P) is wound and is provided to be unwound and wound and rotated in a reverse direction orthogonal to the left and right longitudinal direction of the base for mask cleaning, so as to supply and retrieve the cleaning paper and maintain the cleaning state of the cleaning paper. That is, the release of the paper control means (200) is for supplying the cleaning paper (P) before the cleaning operation for washing the mask to the wiper cleaning means (300), the winding is for recovering the cleaning paper (P) after the cleaning operation in which the mask has been washed is completed, and the reverse rotation is an operational relationship for controlling the tension of the cleaning paper (P) that is released and stretched to prevent the cleaning paper (P) from being damaged or broken when the cleaning paper (P) supplied by the release is brought close to the mask side by the wiper cleaning means (300) so that it comes into contact with the mask washing area in a flat state.

[0085]

[0086] The above paper control means (200) is composed of a support roller (210), a receiving roller (220), a forward rotation adjustment motor (230), and a reverse rotation adjustment motor (240), as shown in FIGS. 1 to 4.

[0087]

[0088] As mentioned above, the support roller (210) is provided to supply cleaning paper (P) as a wiper cleaning means, and to perform a reverse rotation operation to ensure that the cleaning paper (P) in contact with the mask surface is released during the process of rising to make contact with the mask surface and to make the surface of the cleaning paper (P) in contact with the mask surface a flat surface for even contact with the mask. It is formed long in the left-right longitudinal direction, and the cleaning paper (P) before the cleaning operation is wound in a roll shape and provided on one side of the base.

[0089]

[0090] Here, the support roller (210) and the receiving roller (220) described below are configured in a cartridge form in which the cleaning paper (P) is wound around the support roller (210) in order to reduce the replacement time of the cleaning paper, and it is also preferable to configure the receiving roller (220) in a cartridge form so that the receiving roller (220) and the cleaning paper (P) can be replaced together in a state where the cleaning paper (P) that has been washed is collected and wound.

[0091]

[0092] The above-described receiving roller (220) is provided to recover the cleaning paper supplied from the aforementioned support roller (210) through the wiper cleaning means, which has been used for mask washing. The receiving roller is formed long in the left and right longitudinal directions, and the cleaning paper (P) after the cleaning work is wound in the form of a roll on the other side of the base. Here, the receiving roller (220) not only recovers the cleaning paper (P) that has been used for mask washing, but also maintains tension through interaction with the support roller that rotates in reverse so that the cleaning paper located in the washing section of the wiper cleaning means during the mask washing process forms a flat surface.

[0093]

[0094] The above-described forward rotation adjustment motor (230) is provided to supply the cleaning paper (P) so that the surface on which the cleaning operation has not been performed is positioned in order to perform the mask cleaning operation, and is formed to be coupled to one side of the axial direction of the receiving roller and driven so that the cleaning paper (P) supplied from the support roller (210) is unwound for cleaning and wound on the receiving roller (220). That is, the driving force is transmitted so that the receiving roller rotates, and the support roller, which is linked to the receiving roller and the cleaning paper, rotates according to the rotation of the receiving roller to unwound the cleaning paper required for cleaning and supply it to the cleaning position of the wiper cleaning means.

[0095]

[0096] The above-mentioned reverse rotation adjustment motor (240) is provided to prevent the cleaning surface of the cleaning paper from coming into uneven contact with the mask surface by adjusting the tension so that the supplied cleaning paper is returned to the support roller side and the cleaning paper forms a flat surface, thereby increasing the cleaning efficiency. In this way, only the cleaning paper (P) section to be used for mask cleaning comes into contact with the mask, and the cleaning paper (P) section not used for cleaning is not contaminated with the solder remaining on the mask. As the cleaning paper of the cleaning section is raised by the wiper cleaning means (300), the cleaning paper wound on the support roller side is temporarily released and stretched, and the stretched cleaning paper (P) is coupled to one side of the support roller (210) in the axial direction so that the cleaning paper section for cleaning the mask forms a flat surface through reverse rotation.

[0097]

[0098] That is, as described above, the reverse rotation adjustment motor (240) supplies cleaning paper to the wiper cleaning means (300) for cleaning. The supply of the cleaning paper is driven by the forward rotation adjustment motor (230) described above, and the receiving roller (220) rotates according to the driving of the forward rotation adjustment motor, and as the receiving roller (220) rotates, the cleaning paper wound on the support roller (210) is unwound and the support roller also rotates together.

[0099]

[0100] Thereafter, the cleaning paper (P) released from the support roller (210) is supplied to the cleaning position where the wiper blade and wiper squeegee of the wiper cleaning means (300) are configured as described above, as shown in FIGS. 4 and 6. Next, the wiper cleaning means is raised above the base by the push cylinder described later, and as the wiper cleaning means is raised, the cleaning paper (P) at the cleaning position moves upward as shown in FIG. 7 while its position is fixed to a certain extent by the frictional force due to the linear contact of the wiper blade with the cleaning paper and the linear frictional force of the wiper squeegee formed of silicone.

[0101]

[0102] At this time, the cleaning paper wound on the support roller (210) is unwound and moves upwards along the distance traveled by the upwardly moving wiper cleaning means. This is to prevent breakage or damage to the cleaning paper, but also to prevent deformation of the density of the tissue of the cleaning surface constituting the cleaning paper, thereby maintaining the cleaning efficiency.

[0103]

[0104] Afterwards, since the cleaning paper that is released as the wiper cleaning means (300) moves upward is in a flexible state in the shape of a plane, after the upward movement, the cleaning surface position of the cleaning paper located on the wiper blade and the wiper squeegee is also released due to the extended cleaning paper, and the contact between the wiper blade and the wiper squeegee is lifted due to the extended cleaning paper, which leads to poor contact of the cleaning paper for mask cleaning, and during the cleaning process, the cleaning paper is deformed or pushed with respect to the direction of the wiper cleaner moving for cleaning, which causes a problem in that the cleaning efficiency is lowered and the amount of cleaning paper used is excessively increased.

[0105]

[0106] Accordingly, by rotating the reverse rotation adjustment motor coupled to one side of the support roller (210) to cause the support roller (210) to rotate in reverse, the cleaning paper released during the rising process of the wiper cleaning means (300) is returned to the support roller (210), so that only the amount of cleaning paper necessary for cleaning is used, thereby preventing unnecessary use of the cleaning paper. In addition, since the cleaning paper released according to the rising height of the wiper cleaning means maintains a flat tension to prevent lifting between the wiper blade and the wiper squeegee, poor contact with the mask cleaning surface can be prevented, thereby increasing the cleaning efficiency. In other words, the mask can be cleaned with a small area of ​​the cleaning paper that comes into contact with the mask by the wiper blade, and the supply of cleaning paper unnecessary for mask cleaning can be limited, so that the amount of cleaning paper used can be reduced.

[0107]

[0108] The above wiper cleaning means (300), as described above, is formed to perform cleaning by substantially bringing the cleaning paper into contact with the mask, and when the cleaning paper is supplied to the cleaning section through the paper control means (200) for setting the cleaning surface through supply, recovery, and reverse rotation by the support roller and the receiving roller described above, the cleaning paper for removing residual solder from the mask is vertically raised, and a cleaning state is achieved in which the cleaning paper in the cleaning section has a flat surface through reverse rotation by the paper control means (200), and the cleaning paper in the cleaning section that has formed a flat surface is raised and lowered on the upper surface of the base (100) so that it comes into close contact with the mask and moves along the mask surface of the base to clean it.

[0109]

[0110] The above-described wiper cleaning means (300) is composed of at least two wiper blades (310), a wiper squeegee (320), a top vacuum housing (330), a bottom vacuum housing (340), and a push cylinder (350), as shown in FIGS. 3 and 4.

[0111]

[0112] At least two of the above wiper blades (310) serve to scrape off residual solder whose interface is activated by a cleaning liquid while the cleaning paper (P) is positioned flat between the blades so that it is wiped off by the cleaning paper. The wiper cleaning means (300) is formed to have a length corresponding to the left-right width of the cleaning paper (P) in an unfolded state before the cleaning operation supplied from the paper control means (200). That is, it is generally preferable that the length of the wiper blade (310) corresponds to the width of the mask.

[0113]

[0114] Here, as shown in FIG. 4, at least two wiper blades (310) are formed within 5.0 mm, and the cleaning paper (P) used to remove residual solder of the mask between the wiper blades (310) is moved stepwise by 2.5 mm according to the operation of the forward rotation adjustment motor (230). This specification is limited for the following reasons. First, when the wiper cleaner according to the present invention is based on mask washing, in the mask washing process, two blades are arranged side by side within 5.0 mm, and when the cleaning paper is supplied for washing, the interface of the residual solder on the mask surface is activated by the cleaning liquid, and the entire wiper cleaner including the base moves along the mask surface.

[0115]

[0116] During the moving process, first, a wiper squeegee (320) wipes the cleaning solution on the mask surface with a cleaning paper (P) in between to wipe off any remaining cleaning solution other than the interfacial activity of the residual solder on the mask. The wiped cleaning solution is sucked in and processed through a vacuum hole between the wiper blade and the wiper squeegee, and at the same time, the vacuum hole sucks and removes any remaining solder residue through a cleaning paper.

[0117]

[0118] Next, the wiper blade on the vacuum side of the wiper blade thirdly wipes away the residual solder on the mask surface, and the wiper blade on the receiver roller side removes the remaining residual solder removed by the vacuum side wiper blade through cleaning paper. Here, the cleaning paper located on the wiper blade on the rear end of the vacuum side wiper blade has the greatest cleaning contamination with respect to the residual solder, so it is wound to the receiver roller side when cleaning is completed.

[0119]

[0120] That is, when looking at the cleaning contamination level of the cleaning paper step by step, the cleaning liquid of the mask is removed by the wiper squeegee, so it shows a cleaning contamination level that the cleaning liquid is recovered again by the cleaning paper, so it can be used in the cleaning step by the wiper blade, and in the vacuum hole, only the solder remaining as residue is sucked in, that is, the cleaning contamination level of the cleaning paper is low because the residual solder sucked in through the micro-pores of the cleaning paper is sucked in and discharged.

[0121]

[0122] However, the wiper blade located at the front end of the vacuum cleaner blade is less contaminated than the rear wiper blade in the process of scraping off the residual solder with activated interface and wiping it with cleaning paper, so it can be used additionally by the rear wiper blade in stages of about 2.5 mm of cleaning paper at the front end of the wiper blade.

[0123]

[0124] That is, since the cleaning paper can be used in duplicate at a distance of 5.0 mm between the wiper blades at intervals of 2.5 mm, it is possible to wash the mask by moving it at a distance corresponding to half the distance between the wiper blades.

[0125]

[0126] Looking at the number of uses and length of use of the conventional wiper cleaner and the wiper cleaner according to the present invention through these characteristics, the results are as shown in Table 1 below.

[0127] Item Conventional wiper cleaner Wiper cleaner of the present invention Result Cleaning result Satisfactory Satisfactory Satisfactory Paper usage 10 times (based on 15m) 1,350mm±20mm (135mm / time) 260mm±20mm (26mm / time) 80% reduction, 1 / 5 of the conventional use Paper usage count of 15m 110 times (PCB Unit) 570 times (PCB Unit) 80% reduction, 1 / 5 of the conventional use Paper replacement count 5 times / day (SMT company) 1 time / day (SMT company) 4 times / day reduction 60 times / day (OSAT company) 12 times / day (OSAT company) 48 times / day reduction Productivity improvement (based on 1 line, screen printer) - 80% reduction in replacement time compared to the conventional - 80% reduction in replacement time compared to the conventional

[0128] As seen in the above [Table 1], the wiper cleaner according to the present invention can reduce the amount of cleaning paper used, the number of replacements, and the time by about 80% compared to conventional methods.

[0129]

[0130] Based on this, the wiper cleaner according to the present invention can reduce the cost of cleaning paper by 80% compared to the conventional wiper cleaner, and can improve the workload of workers by drastically reducing the number of replacements, and can reduce the disposal cost by reducing the waste of paper that must be treated as special waste such as lead by reducing the amount used, and can minimize the emission of environmental pollutants.

[0131]

[0132] Meanwhile, as briefly mentioned above, the wiper squeegee (320) serves as a cleaning knife that removes the cleaning solution and residual solder remaining on the mask, and is formed to be long enough to correspond to the left-right longitudinal direction of the wiper blade (310) and is formed of silicone to wipe away the mask residual cleaning solution and residual solder applied to the mask through the cleaning paper (P). That is, the wiper squeegee (320) serves the same role as the silicone attached to the wiper that swivels left and right to remove rainwater or foreign substances attached to the windshield of a car when it rains. In the case of a car, to remove foreign substances from the windshield, the wiper equipped with a squeegee made of silicone or a rubber pad is operated left and right to wipe away rainwater or spray glass cleaner to activate the interface of the foreign substances and remove the glass cleaner and foreign substances, thereby removing the remaining cleaning solution and residual solder on the mask to keep the surface of the mask cleaner.

[0133]

[0134] As shown in FIGS. 3 and 4, the above-described top vacuum housing (330) is provided with the aforementioned wiper blade (310) and wiper squeegee (320) installed on the upper surface to suction and remove residual solder or cleaning liquid washed during the cleaning process through cleaning paper, and is configured to maintain internal vacuum by combining with the bottom vacuum housing (340) described later.

[0135]

[0136] The top vacuum housing (330) is formed to be long in the left-right longitudinal direction, and a wiper connecting portion (332) protruding to a length corresponding to the left-right width of the cleaning paper is formed on the upper surface so that the wiper blade (310) and the wiper squeegee (320) can be replaced. In addition, a plurality of vacuum holes (334) are formed through the space between the wiper blade (310) and the wiper squeegee (320) connected to the wiper connecting portion (332) so that the residual solder of the mask is absorbed and removed by the cleaning paper. Here, the residual solder and the cleaning solution produced by the wiper squeegee can also be sucked and discharged through the vacuum holes (334).

[0137]

[0138] In addition, the top vacuum housing (330) is coupled to the open upper portion of the bottom vacuum housing (340) described later, so that the bottom vacuum housing (340) and the top vacuum housing (330) are coupled to form a vacuum suction space, thereby enabling suction of solder through the vacuum hole (334).

[0139]

[0140] The above-described bottom vacuum housing (340) is designed to be combined with the top vacuum housing (330) described above to form a vacuum capable of sucking up cleaning paper through the vacuum hole (334) and mask residual solder, residual solder, and cleaning liquid. The bottom vacuum housing (340) is formed to be long with a length corresponding to the top vacuum housing (330), and the vacuum suction hole (342) connected to the vacuum hole (334) is formed to be vertically connected to suck up vacuum by the operation of an external compressor.

[0141]

[0142] The above push cylinder (350) is used to vertically raise the bottom vacuum housing (340) of the wiper cleaning means (300) so that the cleaning paper (P) comes into contact with the mask to activate the interface of the residual solder through the cleaning liquid to facilitate cleaning, and to finish cleaning the mask through the vacuum suction of the wiper blade (310), the wiper squeegee (320), and the vacuum hole (334), so that the cleaning paper (P) on the wiper blade (310) side of the wiper cleaning means (300) comes into contact with the mask, and is formed symmetrically left and right on the upper surface of the base (100), and the upper end of the push rod (352) is coupled to the lower surface of the bottom vacuum housing (340) so that the bottom vacuum housing (340) is operated to rise and fall according to the rising and falling of the push rod (352). It is prepared.

[0143]

[0144] Meanwhile, the push rod (352) of the push cylinder (350) is generally fixed in its vertical elevation height, making it practically difficult to separately adjust it. Therefore, in order to more efficiently control this and control the height for raising the wiper cleaning means (300) to the contact height with the mask, it is preferable to further form a rod level adjustment unit (360), as illustrated in FIG. 3.

[0145]

[0146] First, in order to move the cleaning paper (P) to a contact position with the mask, the wiper cleaning means (300) is configured to be raised for cleaning. However, if the vertical elevation length of the push rod (352) is greater than the contact height with the mask, the cleaning paper will be excessively adhered to the mask surface, and the resulting pressure will increase the frictional force due to the excessive adherence of the cleaning paper and the mask, causing the cleaning paper to be torn or damaged during the cleaning process. In addition, if the wiper blade (310) comes into direct contact with the mask surface due to the damage to the cleaning paper, scratches may be generated on the mask surface, which may even lead to a problem of mask damage.

[0147]

[0148] Conversely, if the vertical elevation height of the push rod (352) is short, the cleaning paper does not rise to the contact height for cleaning with the mask, so cleaning efficiency cannot be expected. However, as previously mentioned, in most cases, the push rod (352) is formed to be longer than the contact height with the mask, so it is desirable to configure and adjust the rod level adjustment unit (360) capable of controlling this.

[0149]

[0150] Accordingly, the load level adjustment unit (360) is configured to adjust the elevation height of the push rod (352) of the push cylinder (350) so that the elevation height of the cleaning paper by the wiper cleaning means (300) is controlled to correspond to the contact position of the cleaning paper with the mask for removing residual solder on the mask by adjusting the vertical separation distance of the batum vacuum housing (340), and is composed of a level shaft (362) and a level adjustment ring (364), as shown in FIGS. 3 and 4.

[0151]

[0152] The above level shaft (362) is fixedly connected at the upper end to the lower surface of the above-mentioned batum vacuum housing (340), and the lower end is fitted so as to move up and down along the slide hole (102) of the base (100) and protrudes from the lower surface of the base.

[0153]

[0154] The above level adjustment ring (364) is formed with a slip hole (366) in the center so that it can move up and down along the outer periphery of the lower end of the level shaft (362) protruding from the lower surface of the base, and a stop bolt hole (368) is formed perpendicular to the slip hole (366) so that it can be fixed in a position moved up and down along the outer periphery of the level shaft.

[0155]

[0156] That is, as shown in FIGS. 6 to 9, when the push rod (352) of the push cylinder (350) is formed with a long vertical rise distance for vertically rising higher than the height at which the cleaning paper (P) comes into contact with the mask surface for cleaning, in order to prevent the wiper cleaning means (300) from rising any further than the optimal height by the vertically rising push rod, a level adjustment ring (364) coupled to the lower outer periphery of the level shaft (362) of the load level adjustment unit (360) is adjusted up and down on the level shaft (362) and fixed. Afterwards, when the push rod (352) is vertically raised, the lower end of the level shaft (362) is in a state where it protrudes from the lower surface of the slide hole (102) of the base (100), and as the push rod (352) is vertically raised, the bottom vacuum housing (340) of the wiper cleaning means (300) is raised from the upper surface of the base (100). At the same time, the level shaft (362) fixedly connected to the lower surface of the bottom vacuum housing (340) also rises.

[0157]

[0158] Afterwards, the vertically rising push rod (352) of the push cylinder (350) of the vertically rising batum vacuum housing (340) continues to rise, but the lower part of the level shaft (362) moving along the slide hole (102) at a position close to the mask is limited in the vertical rising of the batum vacuum housing (340) as the upper surface of the level adjusting ring (364) comes into contact with the lower surface of the slide hole (102) of the base (100) at the position where the level adjusting ring (364) is fixed, and as a result, even if the push rod (352) continues to rise vertically, the vertical rising is limited so that it can come most optimally close to the mask surface.

[0159]

[0160] Accordingly, as described above, the level adjustment ring (364) can be moved up and down along the outer periphery of the level shaft (362) to control the rising height of the batum vacuum housing (340).

[0161]

[0162] Meanwhile, as shown in FIGS. 1 to 4, it is preferable to further provide a guide roller (370) that is coupled to the cleaning paper supply side of the paper control means of the wiper cleaning means (300) so that both ends rotate idly, and is arranged to guide the cleaning paper (P) in an unfolded state toward the wiper squeegee (320) side of the wiper cleaning means (300).

[0163]

[0164] The above guide roller (370) is configured to guide the cleaning paper (P) so that it is not fed crookedly to the wiper cleaning means (300) and to ensure proper cleaning.

[0165]

[0166] Furthermore, it is desirable to count the length of the cleaning paper (P) returned to the receiving roller (220) side so that the length used for cleaning the cleaning paper can be calculated, and through this, it is desirable to determine the time for replacing the cleaning paper in advance so that the downtime due to replacement can be minimized, thereby reducing the Tact-time, which is the total process time.

[0167]

[0168] Accordingly, it is preferable that a counting means (500) be further formed on the upper surface of the base (100) between the wiper cleaning means (300) and the cleaning paper discharge side of the paper control means to measure the usage length of the cleaning paper. Here, the counting means (500) is composed of a guide gear roller (510), an axis block (520), a counting rotation member (530), a counting sensor (540), and a control unit, as illustrated in FIG. 3.

[0169]

[0170] The above guide gear roller (510) is provided to allow the cleaning paper (P) that has been cleaned by the wiper cleaner means (300) to pass through before being returned to the receiving roller (220), and the radial guide gears are formed long in the left and right longitudinal directions so that the cleaning paper (P) that has been discharged after the cleaning operation is guided and discharged at regular intervals. That is, in the case where the gear configuration of the guide gear roller (510) is absent, the discharged cleaning paper is prevented from slipping, and the counting rotation member (530) described below is guided to be counted step by step by the counting sensor (540).

[0171]

[0172] The above-described shaft block (520) is provided so that the left and right ends of the aforementioned guide gear roller (510) can be axially coupled to each other so as to be able to rotate idly. Here, the shaft block (520) is coupled to the upper end of the base and is formed to stand upright corresponding to the height at which the cleaning paper, which has completed the cleaning process by the wiper cleaning means (300), is positioned to move downward so as to be guided by the guide gear roller (510).

[0173]

[0174] The above-described counting rotation member (530) is provided to calculate the length of the cleaning paper used for washing by calculating the number of counting wings passing the counting sensor described below and the length set for one counting, and is coupled to the outside of one of the shaft blocks (520) to which the guide gear roller (510) is coupled, and a radial counting wing (532) is formed to rotate together with the rotation of the guide gear roller (510) to measure the discharge length of the cleaning paper.

[0175]

[0176] The above counting sensor (540) is coupled to an axis block directly below the counting wing to measure the length of cleaning paper used by measuring the number of counting wings (532) according to the rotation of the counting wing of the counting rotating member (530). Here, the counting sensor (540) is configured in a "U" shape so that counting is performed as the counting wing passes through the center thereof, but it can be configured in various shapes other than the above shape to perform counting.

[0177]

[0178] The above control unit is provided to measure the length of use of the cleaning paper through the measurement value of the counting sensor (540) and control the replacement time of the cleaning paper roll through this.

[0179]

[0180] Meanwhile, it is preferable that a detection sensor (600) for sensing the loosening of the cleaning paper be further formed in the center of one side of the base (100) on the side where the cleaning paper (P) is supplied before the cleaning operation of the paper control means (200).

[0181]

[0182] The above detection sensor (600) is configured to continuously detect the supplied cleaning paper as shown in FIGS. 3 and 4, and when the final cleaning paper supply is completed and the cleaning paper detection signal is cut off, the control unit generates a cleaning replacement signal by comparing the cleaning paper length transmitted from the counting sensor (540). On the other hand, if the counting means (500) is not configured, it is preferable to configure the replacement timing to be controlled only by the detection sensor (600).

[0183]

[0184] The above detection sensor (600) continuously detects the cleaning paper (P) during the use process when the cleaning paper (P) wound on the support roller (210) is used for cleaning, but since the cleaning paper (P) is no longer detected when use from the support roller (210) is completed, the replacement time can be determined based on this.

[0185]

[0186] Accordingly, the cleaning paper (P) wound around the support roller (210) is attached to the outer periphery of the support roller (210) with a separate adhesive member or adhesive tape at the time of initial winding, and when the cleaning paper tip is attached and fixed to the support roller, the cleaning paper is wound along the outer periphery of the support roller (210), thereby forming a support roller (210) in which a replaceable cartridge-type cleaning paper is wound.

[0187]

[0188] Accordingly, the detection sensor (600) supplies cleaning paper (P) for cleaning, and when the adhesive member or adhesive tape wrapped around the support roller (210) is detected in the final stage, the replacement time is determined based on this, and a replacement signal is sent through the control unit to notify the operator so that replacement can be performed.

[0189]

[0190] Meanwhile, the cleaning solution spraying means (400) is configured to spray the cleaning solution onto the cleaning paper so that the residual solder or residual solder remaining after printing on the mask is activated from the interface with the mask surface and easily removed, as shown in FIGS. 3, 4, and 6, and is transferred to the mask surface. The cleaning paper (P) before the cleaning operation is provided on one side of the wiper cleaning means (300) to which it is supplied, and a plurality of spray nozzles (402) are provided to spray the cleaning solution for mask cleaning onto the cleaning paper (P) supplied to the cleaning position so that the cleaning solution is applied to the cleaning paper before the cleaning operation and wetted. Here, the cleaning solution spraying means (400) is preferably configured in a pipe shape with a length formed long enough to correspond to the width of the cleaning paper.

[0191]

[0192] The method for cleaning a mask using a wiper cleaner of a screen printer capable of reducing cleaning paper according to the present invention having the above-described configuration and effect is composed of a cleaning paper setting step (S100), a mask washing preparation step 1 (S200), a mask washing preparation step 2 (S300), a mask washing preparation step 3 (S400), a mask washing step (S500), and a wiper cleaner return setting step (S600), and the mask is washed by repeating the above steps, as shown in FIG. 5.

[0193]

[0194] The above cleaning paper setting step (S100)

[0195] This is a step of setting the cleaning paper on the wiper cleaner for mask cleaning, in which the cleaning paper (P) before the cleaning operation is wound around the support roller (210) of the paper control means (200) formed before and after the base (100), the leading edge of the cleaning paper (P) wound around the support roller is released, and the cleaning paper passes through the guide roller (370), the cleaning liquid spray means (400), the wiper cleaning means (300) having a wiper squeegee (320) - vacuum hole (334) - at least two wiper blades (310), and the guide gear roller (510) of the counting means (500) and is wound around the receiving roller (220). The cleaning paper setting step is as shown in Fig. 6.

[0196]

[0197] The above mask washing preparation step 1 (S200) is

[0198] Through the above cleaning paper setting step, a cleaning liquid for cleaning the mask is sprayed onto the cleaning paper (P) set on the wiper cleaner through the cleaning liquid spraying means (400) provided between the wiper cleaning means (300) and the support roller (210), and as the receiving roller (220) rotates by the driving of the forward rotation adjustment motor (230), the cleaning paper to which the cleaning liquid has been applied moves to the mask side to be cleaned, including the wiper cleaner including the base positioned above the wiper blade (310) and the wiper squeegee (320) of the wiper cleaning means (300). This is also as illustrated in FIG. 6.

[0199]

[0200] The above mask washing preparation step 2 (S300) is

[0201] In the mask washing preparation step 1 above, the cleaning paper (P) on which the cleaning liquid of the wiper cleaner is applied and prepared to move toward the mask to be washed is vertically raised together with the cleaning paper (P) by the operation of the push rod (352) of the push cylinder (350) adjusted to a height where it comes into contact with the mask by the load level adjustment unit (360) while the cleaning paper is released from the support roller (210) to correspond to the vertical movement height of the wiper cleaning means (300). The mask washing preparation step 2 above is as illustrated in FIGS. 6 and 7, which illustrate the mask washing preparation step 3.

[0202]

[0203] The above mask washing preparation step 3 (S400) is

[0204] In the second step of the mask washing preparation, as the wiper cleaning means (300) rises toward the mask side, in order to prevent the expansion or damage of the tissue density of the cleaning paper during the process of the wiper cleaning means (300) rising from the support roller (210), the loose cleaning paper (P) is returned to the support roller side by the reverse rotation adjustment motor (240) and the support roller (2100) rotates in reverse, and the loose cleaning paper (P) is returned to the position located on the wiper blade (310) in the first step of the mask washing preparation, while maintaining a flat tension so that it evenly contacts the mask surface. This is as illustrated in FIGS. 7 and 8.

[0205]

[0206] The above mask washing step (S500)

[0207] When the mask washing preparation is completed through the above 3 mask washing preparation steps, the entire wiper cleaner moves toward the cleaning paper setting step when the cleaning paper comes into contact with the mask, and during the movement process, a first washing is performed to remove the cleaning liquid on the mask surface by the wiper squeegee (320), a second washing is performed to remove residual solder by absorption through the vacuum hole (334), and a third washing is performed to completely remove residual solder from the final mask by the wiper blade (310), as shown in FIG. 9, thereby completing the mask washing.

[0208]

[0209] The above wiper cleaner reset setting step (S600)

[0210] When the above mask washing step is completed, the wiper cleaner returns to the cleaning paper setting step position, and the forward rotation adjustment motor (230) is driven so that the cleaning paper (P) is wound onto the receiving roller (220) by a distance corresponding to half the distance between the two wiper blades (310), thereby preparing for washing again.

[0211]

[0212] Here, the length used for cleaning, in which the cleaning paper is wound onto the receiving roller by a distance corresponding to half the distance between the two wiper blades (310), is such that at least two wiper blades (310) are formed within 5.0 mm, and the cleaning paper (P) moved between the wiper blades is moved stepwise by 2.5 mm through the wiper cleaner return setting step.

[0213]

[0214] This is because the amount of cleaning paper used can be minimized through the three-step cleaning process of the wiper squeegee, vacuum cleaner, and wiper blade in the previous mask cleaning step, and because the cleaning paper can be used repeatedly depending on the cleaning contamination level of the cleaning paper during cleaning, the optimal length corresponding to half of the wiper blade is 5.0 mm, and half that is 2.5 mm, so that cleaning use is possible.

[0215]

[0216] Accordingly, the cleaning paper can reduce costs by about 80% compared to the conventional one and shorten the replacement period, making it possible to produce printed circuit boards of higher quality while minimizing the generation of waste for economical and environmental protection.

[0217]

[0218] Meanwhile, the time of replacement of the cleaning paper can be notified by calculating the amount of cleaning paper used for mask cleaning through a counting means (500) between the mask washing step and the wiper cleaner return setting step, and the time of replacement of the cleaning paper can be notified by continuously detecting the amount of cleaning paper wound on the support roller by the detection sensor (600) in the cleaning paper setting step and notifying the time of replacement of the cleaning paper when the signal is cut off because the final cleaning paper is not detected, and the result values ​​of the counting means and the detection sensor (600) can be calculated together to confirm and notify the time of replacement of the cleaning paper.

[0219]

[0220] Accordingly, the present invention can significantly reduce the amount of cleaning paper used, thereby significantly reducing the amount of waste generated from cleaning paper, which is special waste after cleaning, thereby contributing to preventing environmental pollution. In addition, as the amount of paper used is reduced, the number of times a single paper is used increases, thereby reducing costs. In addition, as the number of times a single cleaning paper is used increases, the time required to replace the cleaning paper increases, so that the number of times the cleaning paper is replaced per day can be significantly reduced. Therefore, it is obvious that this has the advantage of improving the workload of workers in addition to reducing costs.

[0221]

[0222] Although the present invention has been described in detail above as one embodiment, the scope of the present invention is not limited thereto, and it is obvious that numerous modifications and variations are possible for those of ordinary skill in the art within the scope of technical idea, and it will be understood that such modifications and variations are included to the extent that they are substantially equivalent to the embodiments of the present invention.

[0223] 〔Explanation of symbols〕

[0224] 100: Base 102: Slide Ball

[0225] 200: Paper control means 210: Support roller

[0226] 220: Receiver roller 230: Forward rotation adjustment motor

[0227] 240: Reverse rotation adjustment motor 300: Wiper cleaning device

[0228] 310: Wiper blade 320: Wiper squeegee

[0229] 330: Top vacuum housing 332: Wiper joint

[0230] 334: Vacuum pump 340: Batum vacuum housing

[0231] 342: Vacuum suction hole 350: Push cylinder

[0232] 352: Push rod 360: Load level adjustment unit

[0233] 362: Level shaft 364: Level adjustment ring

[0234] 366: Slip hole 368: Stop bolt hole

[0235] 370: Guide roller 400: Cleaning agent spraying means

[0236] 402: Injection nozzle 500: Counting means

[0237] 510: Guide gear roller 520: Shaft block

[0238] 530: Counting rotary member 540: Counting sensor

[0239] 600: Detection sensor

[0240] S100: Cleaning paper setting step S200: Mask washing preparation step 1

[0241] S300: Mask Washing Preparation Step 2 S400: Mask Washing Preparation Step 3

[0242] S500: Mask cleaning step S600: Wiper cleaner reset step

Claims

1. A base (100) formed long in the left-right longitudinal direction and having a slide hole (102) that penetrates up and down, formed symmetrically left-right, and moved toward the mask side to move back and forth along the mask surface; A paper control means (200) formed in a front and rear direction orthogonal to the left and right longitudinal direction of the base (100), and provided so that cleaning paper (P) is wound and unwound, wound, and reversed in a direction orthogonal to the left and right longitudinal direction of the base for mask cleaning, thereby supplying and recovering the cleaning paper and maintaining the cleaning state of the cleaning paper; When the cleaning paper is supplied to the cleaning section through the above paper control means (200), the cleaning paper for removing residual solder of the mask is vertically raised, and the cleaning paper of the cleaning section is in a cleaning state with a flat surface through reverse rotation by the paper control means (200), and the wiper cleaning means (300) is provided to be raised and lowered on the upper surface of the base (100) so that the cleaning paper of the cleaning section with the flat surface comes into close contact with the mask and is cleaned; A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that it is formed by a cleaning liquid spraying means (400) provided on one side of the wiper cleaning means (300) to which cleaning paper (P) is supplied before a cleaning operation, and having a plurality of spray nozzles (402) for spraying a cleaning liquid for mask cleaning onto the cleaning paper (P) supplied to the cleaning position so that the cleaning liquid is applied to the cleaning paper before the cleaning operation and wetted.

2. In paragraph 1, The above paper control means (200) is formed long in the left and right longitudinal directions, and includes a support roller (210) on which cleaning paper (P) prior to cleaning work is wound in a roll shape on one side of the base; A receiving roller (220) formed long in the left and right longitudinal directions, and on which cleaning paper (P) after cleaning work on the other side of the base is wound in a roll shape; A forward rotation adjustment motor (230) coupled to one side of the axial direction of the receiving roller and driven so that the cleaning paper (P) supplied from the above support roller (210) is released for cleaning and wound on the receiving roller (220); A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that the wiper cleaning means (300) causes the cleaning paper of the cleaning section to rise so that only the cleaning paper (P) section to be used for mask cleaning comes into contact with the mask, and the cleaning paper (P) section not used for cleaning is not contaminated by solder remaining on the mask, and the cleaning paper wound on the support roller side is temporarily released and stretched, and the stretched cleaning paper (P) is rotated in reverse so that the cleaning paper section for cleaning the mask forms a flat surface, and the wiper cleaner of the screen printer capable of reducing cleaning paper is formed by a reverse rotation adjustment motor (240).

3. In paragraph 1, The above wiper cleaning means (300) comprises at least two wiper blades (310) formed long with a length corresponding to the left-right width of the cleaning paper (P) in an unfolded state before the cleaning operation supplied from the paper control means (200); A wiper squeegee (320) formed long to correspond to the left and right longitudinal direction of the above wiper blade (310) and formed of silicone to wipe away mask residual cleaning solution and residual solder of the cleaning solution transmitted from the cleaning paper (P); A top vacuum housing (330) formed long in the left-right longitudinal direction, having a wiper connecting portion (332) formed on the upper surface with a length corresponding to the left-right width of the cleaning paper so that the wiper blade (310) and the wiper squeegee (320) can be replaced, and having a plurality of vacuum holes (334) formed through the top vacuum housing (330) so that residual solder of the mask is absorbed and removed by the cleaning paper between the wiper blade (310) and the wiper squeegee (320) connected to the wiper connecting portion (332); A bottom vacuum housing (340) formed long with a length corresponding to the above top vacuum pouch (330) and having a vacuum suction hole (342) connected to the vacuum hole (334) so ​​that vacuum is suctioned by the operation of an external compressor; A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that it is formed with a push cylinder (350) that is formed symmetrically left and right on the upper surface of the base (100), and the upper end of the push rod (352) is coupled to the lower surface of the bottom vacuum housing (340) so that the bottom vacuum housing (340) is operated to rise and fall according to the rising and falling of the push rod (352).

4. In paragraph 3, A load level adjustment unit (360) is formed to adjust the height of the push rod (352) of the push cylinder (350) so that the height of the cleaning paper raised by the wiper cleaning means (300) is controlled to correspond to the contact position of the cleaning paper with the mask for removing residual solder on the mask by adjusting the vertical distance of the above-mentioned batum vacuum housing (340). The above load level adjustment unit (360) is a level shaft (362) whose upper end is fixedly connected to the lower surface of the batum vacuum housing (340) and whose lower end is fitted so as to move up and down along the slide hole (102) of the base (100) and protrudes from the lower surface of the base; A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that it is formed with a level adjustment ring (364) having a slip hole (366) formed in the center so as to move up and down along the lower outer periphery of the level shaft (362) protruding from the lower surface of the base, and a stop bolt hole (368) formed perpendicularly to the slip hole (366) so as to be fixed in a position moved up and down along the outer periphery of the level shaft.

5. In paragraph 3, A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that a guide roller (370) is further formed so that the left and right ends of the cleaning paper supply side of the paper control means of the wiper cleaning means (300) are idling and the cleaning paper (P) is guided in an unfolded state toward the wiper squeegee (320) side of the wiper cleaning means (300).

6. In paragraph 3, A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that at least two wiper blades (310) are formed within 5.0 mm, and a cleaning paper (P) used to remove residual solder of a mask between the wiper blades (310) is moved stepwise by 2.5 mm according to the operation of a forward rotation adjustment motor (230).

7. In paragraph 1, A counting means (500) is further formed on the upper surface of the base (100) between the wiper cleaning means (300) and the cleaning paper discharge side of the paper control means to measure the length of use of the cleaning paper. The above counting means (500) comprises a guide gear roller (510) having radial guide teeth formed long in the left and right longitudinal directions so that the cleaning paper (P) discharged after the cleaning work is guided and discharged at regular intervals; A shaft block (520) provided so that the left and right ends of the above guide gear roller (510) can be axially coupled; A counting rotation member (530) coupled to the outside of one of the shaft blocks (520) to which the above guide gear roller (510) is coupled, and having a radial counting wing (532) formed thereon to rotate together with the rotation of the guide gear roller (510) to measure the discharge length of the cleaning paper; A counting sensor (540) coupled to an axis block directly below the counting wing to measure the length of cleaning paper used by measuring the number of counting wings (532) according to the rotation of the counting wing of the above counting rotating member (530); A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that it comprises a control unit configured to measure the length of use of cleaning paper through the measurement value of the above-mentioned counting sensor (540) and control the replacement time of the cleaning paper roll through this.

8. In paragraph 7, A detection sensor (600) for sensing the release of the cleaning paper (P) is further formed in the center of one side of the base (100) on the side where the cleaning paper (P) is supplied before the cleaning operation of the above paper control means (200). A wiper cleaner for a screen printer capable of reducing cleaning paper, characterized in that the detection sensor (600) continuously detects the supplied cleaning paper, and when the supply of the final cleaning paper is completed and the cleaning paper detection signal is cut off, the control unit generates a cleaning replacement signal by performing a comparison operation with the cleaning paper length transmitted from the counting sensor (540).

9. A cleaning paper setting step (S100) for mask washing, in which the cleaning paper (P) before the cleaning operation is wound around the support roller (210) of the paper control means (200) formed before and after the base (100), the leading edge of the cleaning paper (P) wound around the support roller is released, and the cleaning paper passes through the guide roller (370), the cleaning liquid spray means (400), the wiper squeegee (320) of the wiper cleaning means (300), the vacuum hole (334), and at least two wiper blades (310) provided, and then the guide gear roller (510) of the counting means (500) and is wound around the receiving roller (220); A mask washing preparation step 1 (S200) in which a cleaning liquid for washing a mask is sprayed onto a cleaning paper (P) set on a wiper cleaner through a cleaning liquid spraying means (400) provided between the wiper cleaning means (300) and the support roller (210) side through the above cleaning paper setting step, and the receiving roller (220) rotates by the driving of the forward rotation adjustment motor (230), and the cleaning paper to which the cleaning liquid has been applied moves toward the mask side, including the wiper cleaner including the base positioned above the wiper blade (310) and the wiper squeegee (320) of the wiper cleaning means (300); A mask washing preparation step 2 (S300) in which a cleaning paper (P) on which a cleaning liquid of a wiper cleaner is applied and prepared to move toward the mask to be washed through the mask washing preparation step 1 is vertically raised together with the cleaning paper (P) by the operation of the push rod (352) of the push cylinder (350) adjusted to a height where it comes into contact with the mask by the load level adjustment unit (360) while the cleaning paper is released from the support roller (210) to correspond to the vertical movement height of the wiper cleaning means (300); Through the mask washing preparation step 2 above, the wiper cleaning means (300) rises toward the mask side, and the support roller (210) rotates in reverse with the driving of the reverse rotation adjustment motor (240) to retrieve the released cleaning paper (P) toward the support roller side, and the mask washing preparation step 3 (S400) in which the cleaning paper returns to the position located on the wiper blade (310) in the mask washing preparation step 1 and maintains a flat tension so that it evenly contacts the mask surface; A mask washing step (S500) in which, when the mask washing preparation is completed through the above mask washing preparation step 3, the entire wiper cleaner moves toward the cleaning paper setting step when the cleaning paper comes into contact with the mask, and during the movement process, a first washing is performed to remove the cleaning liquid on the mask surface by the wiper squeegee (320), a second washing is performed to adsorb and remove residual solder through the vacuum hole (334), and a third washing is performed to completely remove residual solder from the final mask by the wiper blade (310); A mask cleaning method using a wiper cleaner of a screen printer capable of reducing cleaning paper, characterized in that when the above mask cleaning step is completed, the wiper cleaner returns to the cleaning paper setting step position, and the wiper cleaner return setting step (S600) is repeated to drive the forward rotation adjustment motor (230) so that the cleaning paper (P) is wound onto the receiving roller (220) by a distance corresponding to half the distance between two wiper blades (310).

10. In paragraph 9, A mask cleaning method using a wiper cleaner of a screen printer capable of reducing cleaning paper rolls, characterized in that the above wiper blades (310) are formed in at least two pieces within 5.0 mm, and the cleaning paper (P) moved between the wiper blades is moved stepwise by 2.5 mm through the wiper cleaner return setting step.

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