Homogeneous Film Screen Printing Device

Abstract

According to the present invention, a homogeneous film screen printing device may be provided, comprising: a printing stage equipped with a vacuum chuck for fixing a substrate; a screen mounting part capable of fixing a screen plate; and a squeegee assembly for squeezing a printing liquid onto the surface of the screen plate; wherein the squeegee assembly comprises: a squeegee bar for spreading the printing liquid uniformly onto the screen plate; a slide driving part equipped with a slider for sliding and reciprocating the upper part of the printing stage with the squeegee bar mounted thereon; a lever operating part having at least two levers installed at upper positions on both sides of the squeegee bar to receive the operating force of an operator for manually operating the slider; and a pressure regulating part installed on the slider to regulate the contact pressure of the squeegee bar, wherein the pressure is regulated and left-right balance is regulated by the lever operating part.

Description

Technology Field

[0001] The present invention relates to a homogeneous film screen printing device, and more specifically, to a homogeneous film screen printing device that provides a high-quality printing film through the convenience of use for the operator and the homogeneous distribution of force to the squeegee bar when forming a large-area printing film by installing at least two levers at upper positions on both sides of the squeegee bar to receive the operating force of an operator for manually operating a slider that slides back and forth on the upper part of the printing stage while the squeegee bar is mounted. Background Technology

[0002] Generally, a screen printing device is a device that applies a cream-type paste to a uniform thickness at multiple specific locations on a printed circuit board (hereinafter referred to as the "board") where electronic components are to be mounted. Accordingly, it has a driving mechanism capable of linear reciprocating motion.

[0003] Here, the screen printing device is provided with a transport unit for transporting a substrate and a lifting unit for raising the transported substrate. Additionally, a mask is provided on the upper part of the raised substrate, having at least one pattern hole formed therein so that a cream-type paste can be applied to the substrate surface at a specific location.

[0004] Additionally, a squeegee is provided on the upper part of the mask to squeegee and apply paste located on the upper surface of the mask. At this time, rails having a certain length in the forward and backward direction are provided on the frame of the screen printing device on the left and right sides so that the squeegee can move forward and backward.

[0005] Meanwhile, regarding the screen printing device described above, manual screen printers are used when producing products of sizes that cannot be processed by the screen printers owned by the manufacturer during multi-product, small-batch production. While this manual screen printer does not take up much space and is inexpensive, it suffers from poor work efficiency when the same operation is performed repeatedly, as it is a manual method in which a person directly presses the lead cream.

[0006] In particular, the slider including the squeegee is designed so that the operator pushes or pulls it while holding the handle with one hand, which causes musculoskeletal disorders in the user due to physical imbalance. Furthermore, as the screen printer becomes larger to form a large-area printing film, this problem is bound to be exacerbated, and as the printing area increases, it is difficult to provide uniform force across the entire surface, making it difficult to repeatedly reproduce homogeneous printing. Prior art literature

[0007] Republic of Korea Published Patent No. 10-2013-0109775 The problem to be solved

[0008] The objective of the present invention is to provide a homogeneous film screen printing device having at least two levers installed at upper positions on both sides of a squeegee bar to receive the operating force of a worker for manually operating a slider that slides back and forth on the upper part of the printing stage while the squeegee bar is mounted, thereby solving the problem of the prior art and allowing the worker to work while maintaining physical balance, so that continuous balance is maintained during squeegee operation, thereby enabling uniform force to be transferred to the front of the printing and maintaining uniform printing quality.

[0009] Another objective of the present invention is to enable the maintenance of a stable working posture, thereby minimizing worker fatigue and preventing musculoskeletal diseases.

[0010] Another objective of the present invention is to improve workability by making pressure control and balance adjustment work convenient, by allowing the pressure control and left-right balance of the pressure control unit to be controlled using a lever operating unit, thereby enabling indirect control of the contact pressure of the squeegee bar.

[0011] Another objective of the present invention is to obtain homogeneous printing quality during squeegee operation by stably maintaining the balance position of the pressure plate through the two side levers by installing two side levers that penetrate the facing portions on both the left and right sides of the pressure plate and are respectively coupled to the slider so that an operator can grasp them with both hands and transmit operating force.

[0012] Another objective of the present invention is to improve the working speed by enabling rapid use during small-area printing, by installing a center lever that penetrates the face portion located in the center of the pressure plate and is coupled to the slider, allowing a worker to hold it with one hand and transmit operating force.

[0013] Another objective of the present invention is to improve work efficiency by installing a spirit level on the center lever, thereby enabling measurement and adjustment of the balancing state of the squeegee bar without the need for separate measuring equipment. means of solving the problem

[0014] According to one aspect of the present invention, a printing stage equipped with a vacuum chuck for fixing a substrate; a screen mounting part capable of fixing a screen plate; and a squeegee assembly for squeezing a printing liquid onto the surface of the screen plate; are included.

[0015] A homogeneous film screen printing device may be provided, characterized in that the above squeegee assembly comprises: a squeegee bar that spreads the printing liquid evenly on the screen plate; a slide drive unit having a slider that slides back and forth on the upper part of the printing stage with the squeegee bar mounted thereon; a lever operation unit having at least two levers installed at upper positions on both sides of the squeegee bar to receive the operating force of an operator for manually operating the slider; and a pressure control unit installed on the slider to control the contact pressure of the squeegee bar, wherein the pressure control and left-right balance control are controlled by the lever operation unit.

[0016] Additionally, the pressure regulating member may include: a rod connected to the squeegee bar side and extending through to the upper side of the slider; a pressure plate installed using a lever so as to be spaced apart from the upper side of the slider and through which the rod is slidably coupled; a spring member axially coupled to the rod so as to be interposed between the pressure plate and the slider to provide tension to the squeegee bar; and a regulating nut spirally coupled to the rod to adjust the tension of the spring member according to the direction of rotation.

[0017] In addition, the rods are installed such that a pair penetrates the slider and are coupled to the squeegee holder at the bottom of the slider, and a tilting portion is formed between the squeegee holder and the squeegee bar so that the left and right tilting angle of the squeegee bar can be adjusted by the tilting portion.

[0018] In addition, the above adjustment nut can be installed to contact the upper surface of the slider.

[0019] Additionally, the pressure plate comprises: a facing portion consisting of three divided surfaces to face a slider; and a spring insertion portion forming a space bent upward to connect each of the facing portions; wherein the upper half of a spring member is inserted into the spring insertion portion, and a lever operating portion may be coupled to the facing portion.

[0020] In addition, the lever operating part may include two side levers that penetrate the left and right sides of the face parts and are respectively coupled to the slider so that an operator can grasp them with both hands and transmit operating force.

[0021] In addition, the lever operating part may include one center lever that penetrates the central facing part among the facing parts and is coupled to the slider, allowing the operator to hold it with one hand and transmit operating force.

[0022] In addition, a spirit level for measuring left-right balance can be installed on the center lever. Effects of the invention

[0023] The present invention forms a lever operating unit in which at least two levers are installed at upper positions on both sides of a squeegee bar to receive the operating force of an operator for manually operating a slider that slides back and forth on the upper part of a printing stage while the squeegee bar is mounted, thereby allowing the operator to maintain their body balance while working, so that continuous balance is maintained during squeegee operation, and thus a uniform force can be transmitted to the printing front, thereby having the effect of maintaining uniform printing quality.

[0024] In addition, the present invention has the effect of minimizing worker fatigue and preventing musculoskeletal diseases by maintaining a stable working posture.

[0025] In addition, the present invention allows for the pressure control and left-right balance of the pressure control unit to be controlled using a lever control unit, thereby enabling indirect control of the contact pressure of the squeegee bar, which makes pressure control and balance adjustment work convenient and improves workability.

[0026] In addition, the present invention has the effect of obtaining homogeneous printing quality during squeegee operation by stably maintaining the balance posture of the pressure plate through the two side levers by installing two side levers that penetrate the left and right facing portions of the pressure plate and are respectively coupled to the slider so that an operator can grasp them with both hands and transmit operating force.

[0027] In addition, the present invention has the effect of improving work speed by enabling rapid use during small-area printing through the installation of a center lever that penetrates the face portion located in the center of the pressure plate and is coupled to the slider, allowing a worker to hold it with one hand and transmit operating force.

[0028] In addition, the present invention has the effect of improving workability by installing a level on the center lever, which makes it possible to measure and adjust the balancing state of the squeegee bar without separate measuring equipment. Brief explanation of the drawing

[0029] FIG. 1 is a front view illustrating a homogeneous film screen printing device according to the present invention. FIG. 2 is a side view illustrating a homogeneous film screen printing device according to the present invention. Specific details for implementing the invention

[0030] The present invention according to a preferred embodiment will be described in detail below with reference to the attached drawings. Here, the same reference numerals are used for identical components, and repetitive descriptions and detailed descriptions of known functions and components that may unnecessarily obscure the essence of the invention are omitted. The embodiments of the invention are provided to more completely explain the invention to those with average knowledge in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

[0031] FIG. 1 is a front view illustrating a homogeneous film screen printing device according to the present invention, and FIG. 2 is a side view illustrating a homogeneous film screen printing device according to the present invention.

[0032] Referring to FIGS. 1 and 2, a homogeneous film screen printing device (10) is disclosed according to an embodiment of the present invention.

[0033] The homogeneous film screen printing device (10) may include: a printing stage equipped with a vacuum chuck for fixing a substrate; a screen mounting part (200) capable of fixing a screen plate; and a squeegee assembly (300) for squeezing a printing liquid onto the surface of the screen plate.

[0034] At this time, the above description may include a printed circuit board.

[0035] Additionally, a printing lifting device (400) may be further installed on one side of the printing stage (100) to enable the entire combination of the screen installation part (200) and the squeegee assembly (300) to be operated to be raised and lowered relative to the printing stage (100).

[0036] The configuration of the printing stage (100), screen installation unit (200), and printing lifting device (400) described above is based on known technology, so a detailed description below will be omitted.

[0037] According to an embodiment of the present invention, a squeegee assembly (300) is disclosed.

[0038] The above squeegee assembly (300) may include a squeegee bar (310); a slide drive unit (340); a lever operation unit (350); and a pressure control unit (360).

[0039] The squeegee bar (310) pushes the printing liquid applied to a screen plate (not shown) forming a pattern with an open printing area, spreading it evenly. The squeegee bar (310) may provide a pusher structure that extends long in the width direction of the screen plate.

[0040] A slide drive unit (340) may be provided having a slider (341) that slides back and forth across the upper part of the printing stage (100) while the above squeegee bar (310) is mounted.

[0041] The above slide driving unit (340) may include a slider (341); and a rail unit (342).

[0042] The above slider (341) provides a plate-shaped structure extending laterally from the upper part of the printing device, a squeegee bar (310) mounted on the lower part, and a structure that slides while mounted with a lever operating part (350) and a pressure control part (360) to be described later mounted on the upper part.

[0043] Rail sections (342) can be formed on both the left and right sides of the slider (341) to guide the movement of the slider (341).

[0044] The above rail section (342) is structured such that a guide rail is formed along the path of the slider (341), and a rail block connected to the slider (341) is coupled to the guide rail.

[0045] At this time, the guide rail may be a round bar-shaped rail, and the rail block may be a circular ball bearing to which the round bar-shaped rail is axially coupled.

[0046] According to an embodiment, a lever operating unit (350) may be provided such that at least two levers are installed at upper positions on both sides of the squeegee bar (310) to receive the operating force of an operator for manually operating the slider (341).

[0047] The lever operating unit (350) may include side levers (351) spaced apart on the left and right sides relative to the slider (341) and a center lever (352) located in the center of the slider (341).

[0048] At this time, the side lever (351) and center lever (352) serve to transmit the operator's operating force to the slider (341) and can also be involved in the installation of the pressure regulating unit (360) and pressure regulation and balance regulation.

[0049] At this time, the installation spacing between the side levers (351) can be formed to be narrower than the width of the printing stage (100) and wider than the length of the squeegee bar (310). Additionally, the side levers (351) and the center lever (352) can be screw-coupled to the slider (341) by bolting the column of the handle portion. A female thread tap for bolt coupling can be formed at the position of the slider (341) where the side levers (351) and the center lever (352) are bolt-coupled.

[0050] According to an embodiment of the present invention, a pressure control unit (360) may be provided that is installed on the slider (341) to control the contact pressure of the squeegee bar (310), and allows the pressure to be controlled and the left-right balance to be controlled by the lever operating unit (350).

[0051] According to an embodiment, the pressure regulating unit (360) may include a rod (361), a pressure plate (362), a spring member (363), and a regulating nut (364).

[0052] The lower end of the rod (361) is connected to the squeegee bar (310) side, and the upper end can be extended through to the upper side of the slider (341).

[0053] The above rods (361) can be installed in a sliding manner, with a pair spaced apart at a certain distance on both the left and right sides in the width direction of the slider (341).

[0054] At this time, the pair of rods (361) may be installed so as to be located further inward than the installation position of the side lever (351).

[0055] According to an embodiment of the present invention, a pressure plate (362) may be installed on the upper portion of the slider (341) at a certain distance apart. At this time, the pressure plate (362) may be secured by a side lever (351) and a center lever (352). Additionally, the pressure plate (362) may be slidably connected to the rod (361). At this time, the end of the rod (361) that passes through the pressure plate (362) may form an extended end so that the rod (361) does not detach in the reverse direction.

[0056] Additionally, a spring member (363) may be interposed between the pressure plate (362) and the slider (341).

[0057] The above spring member (363) is axially coupled to the rod (361) and acts to provide vertical tension to the squeegee bar (310).

[0058] At this time, an adjustment nut (364) may be spirally coupled to the rod (361) so that the tension of the spring member (363) can be adjusted according to the direction of rotation.

[0059] When a vertical load is applied to the squeegee bar (310), the above adjustment nut (364) receives this through the rod (361) and presses the upper spring member (363) to compress it between the pressure plate (362). At this time, the compressive force applied to the spring member (363) can transmit a constant tension to the squeegee bar (310) through a reaction force action, thereby enabling elastic action.

[0060] The above adjustment nut (364) is installed to be in contact with the upper surface of the slider (341), and when a vertical load is applied to the squeegee bar (310), it can be raised and lowered together with the rod (361) and become spaced apart from the upper surface of the slider (341).

[0061] At this time, the pressure plate (362) receiving the compressive force of the spring member (363) can maintain the coupled state without being detached from the side lever (351) and the center lever (352).

[0062] Additionally, the rod (361) is installed such that a pair penetrates the slider (341) and can be coupled to the squeegee holder (320) at the bottom of the slider (341). Additionally, a tilting part (330) can be formed between the squeegee holder (320) and the squeegee bar (310) so that the left and right tilting angle of the squeegee bar (310) can be adjusted by the tilting part (330).

[0063] Meanwhile, the pressure plate (362) may include a facing portion (362a) formed with three divided surfaces to face the slider (341); and a spring insertion portion (362b) forming a space bent upward to connect the respective facing portions (362a).

[0064] The upper half of the spring member (363) is inserted into the spring insertion part (362b), and the lever operating part (350) can be coupled to the face part (362a).

[0065] The lever operating part (350) may include: two side levers (351) that penetrate the left and right sides of the face parts (362a) and are respectively coupled to the slider (341) so that a worker can hold them with both hands and transmit operating force; and one center lever that penetrates the face part (362a) located in the center of the face parts (362a) and is respectively coupled to the slider (341) so that a worker can hold it with one hand and transmit operating force.

[0066] At this time, a level (352a) for measuring left and right balance can be installed on the center lever (352).

[0067] The present invention forms a lever operating unit in which at least two levers are installed at upper positions on both sides of the squeegee bar to receive the operating force of an operator for manually operating a slider that slides back and forth on the upper part of a printing stage while the squeegee bar is mounted, thereby allowing the operator to maintain their body balance while working, so that continuous balance is maintained during squeegee operation, and thus uniform force can be transmitted to the printing front, thereby maintaining uniform printing quality.

[0068] In addition, the present invention allows for maintaining a stable working posture, thereby minimizing fatigue in workers and preventing musculoskeletal diseases. Furthermore, by controlling the pressure and left-right balance of the pressure control unit using a lever control unit, the contact pressure of the squeegee bar can be indirectly controlled, making pressure control and balance adjustment work convenient and improving work efficiency.

[0069] In addition, the present invention has the advantage of improving work speed by enabling rapid use during small-area printing, by installing two side levers that penetrate the left and right facing portions of the pressure plate and are respectively coupled to the slider so that an operator can grasp them with both hands and transmit operating force, thereby stably maintaining the balance position of the pressure plate by the two side levers, and by installing one center lever that penetrates the facing portion located in the center of the pressure plate and is respectively coupled to the slider so that an operator can grasp it with one hand and transmit operating force.

[0070] In addition, by installing a spirit level on the center lever, the present invention makes it possible to measure and adjust the balancing state of the squeegee bar without separate measuring equipment, thereby improving work efficiency.

[0071] The present invention has been described with reference to an embodiment illustrated in the accompanying drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims. Explanation of the symbols

[0072] 10: Screen printing device 100: Printing stage 200: Screen installation part 300: Squeegee assembly 310: Squeegee bar 320: Squeegee holder 330: Tilting section 340: Slide drive section 341: Slider 342: Rail guide 350: Lever control section 351: Side lever 352: Center lever 352a: Level 360: Pressure regulator 361: Load 362: Pressure plate 362a: Facing part 362b: Spring insertion part 363: Spring member 364: Adjustment nut 400: Printing lift

Claims

Claim 1 A printing stage equipped with a vacuum chuck for fixing a substrate; a screen mounting unit capable of fixing a screen plate; and a squeegee assembly for squeezing a printing liquid onto the surface of the screen plate; wherein the squeegee assembly comprises: a squeegee bar for spreading the printing liquid uniformly on the screen plate; a slide driving unit having a slider that slides back and forth along the upper part of the printing stage while the squeegee bar is mounted; and a lever operating unit having at least two levers installed at upper positions on both sides of the squeegee bar to receive operating force from an operator for manually operating the slider. A homogeneous film screen printing device comprising: a pressure regulating unit installed on the slider to regulate the contact pressure of the squeegee bar, wherein the pressure regulating unit is configured to regulate pressure and left-right balance by means of the lever operating unit; wherein the pressure regulating unit comprises: a pair of rods connected to the side of the squeegee bar and extending through the upper side of the slider; a pressure plate installed at a certain distance apart on the upper side of the slider and slidably coupled to the pair of rods; a spring member axially coupled to each rod to provide tension to the squeegee bar interposed between the pressure plate and the slider; and a regulating nut spirally coupled to each rod to regulate the tension of the spring member according to the direction of rotation; wherein the regulating nut is installed to abut the upper surface of the slider, but can be separated from the upper surface of the slider when a vertical load is applied to the squeegee bar. Claim 2 delete Claim 3 A homogeneous film screen printing device according to claim 1, characterized in that a pair of rods are installed to penetrate a slider and are coupled to a squeegee holder at the bottom of the slider, and a tilting portion is formed between the squeegee holder and the squeegee bar so that the left and right tilting angle of the squeegee bar is adjusted by the tilting portion. Claim 4 delete Claim 5 A homogeneous film screen printing device according to claim 1, wherein the pressure plate comprises: a facing portion formed of three divided surfaces to face a slider; and a spring insertion portion forming a space bent upward to connect each of the facing portions, wherein the upper half of a spring member is inserted into the spring insertion portion and a lever operating portion is coupled to the facing portion. Claim 6 A homogeneous film screen printing device according to claim 5, wherein the lever operating part comprises two side levers that penetrate the left and right sides of the facing part and are respectively coupled to a slider so that an operator can grasp them with both hands and transmit operating force. Claim 7 A homogeneous film screen printing device according to claim 6, characterized in that the lever operating part comprises one center lever that penetrates the central facing part among the facing parts and is coupled to a slider, allowing an operator to grasp it with one hand and transmit operating force. Claim 8 A homogeneous film screen printing device according to claim 7, characterized in that a level for measuring left-right balance is installed on the center lever.

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