JPH0588940U - Table moving semi-automatic screen printing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a table-moving type semi-automatic screen printing machine which has a high printing speed and is excellent in safety and workability. A table movable semi-automatic screen printing machine provided with a movable printing table for placing a substrate to be printed and performing screen printing, wherein the movable printing table is a front printing table in a front-back direction of the printing machine. And the rear printing table, and the front printing table and the rear printing table are integrally formed so as to be movable, and when the front printing table is located in front of the printing machine, the rear printing table is formed. The printing table is located in the center of the screen plate, and the front printing table is located in the center of the screen plate when the rear printing table is located behind the printing press. Table moving type semi-automatic screen printing machine characterized by.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a table-moving type semi-automatic screen printing machine for screen printing, which has a high printing speed and is excellent in safety and workability.

[0002]

[Prior Art]

 Conventionally, the screen printing machines used in screen printing include manual screen printing machines that perform screen printing by performing artificial printing, fully automatic printing machines that perform screen printing automatically, and intermediates between them. There is a semi-automatic printing machine that does screen printing with some artificial work. The above-mentioned manual screen printing machine is simple but extremely inefficient because it carries out screen printing by performing an artificial operation, and the fully automatic printing machine is efficient, but large and expensive. Since it requires a wide installation space, a semi-automatic printing machine, which is cheap and simple, is more useful when printing comparatively small lots of various types. Therefore, this semi-automatic printing machine is available on the market. Many are used.

Such a semi-automatic printing machine includes a printing table on which a printing material is placed, a screen plate for transferring ink to the printing material to form an image, and a frame supporting a squeegee. However, the frame is inclined at an angle so that it can be moved or approached each time the ink is transferred to form an image, or the substrate to be printed is replaced. It has a structure of a table type or a table moving type in which the printing table moves back and forth or up and down.

In the former tilt-type screen printing machine, one end of the frame is rotatably fixed to the back side end of the printing machine, and a screen plate and a printing table on the front side of the printing machine are provided. Is formed so that the butterfly can be opened freely. Therefore, the structure is such that the operator can easily perform the work such as placing the print medium on the print table or discharging the print medium.

On the other hand, in the screen-moving type screen printing machine, the screen plate and the printing table are arranged vertically in parallel with each other, and the printing table mounts and discharges a printing medium. It is formed so that it can slide and move between the front side of the machine and the printing unit where printing is actually performed. As shown in FIG. 9, a specific operation at the time of printing on such a table-moving type screen printing machine is as follows. First, as shown in FIG. 9, printing is performed on the printing table 17 arranged at the front side of the printing machine 1. After placing the body 3, the printing table 17 is slid to a position below the screen plate 6 arranged in the printing section of the printing machine 1. Next, the print head portion 2 supporting the screen plate 6 and the squeegee 8 is lowered to fix the screen plate 6 close to the printing medium 3 placed on the printing table. Next, the squeegee 8 is lowered and slid while pressing the screen film 6a of the screen plate 6, and the printing ink placed on the screen film 6a is brought into contact with the screen film 6a in contact with the printing object 3. Printing is performed by moving and transferring the printing ink onto the printing medium 3. Then, after the printing is completed, the print head portion 2 is raised and the table 17 is slid again to the front side of the printing machine 1, and the printed substrate 3 is carried out. .. Then, when the operator replaces the printing target body 3 with a new printing target body 3, printing is completed.

[0006]

[Problems to be solved by the device]

 However, although the printing machine having the tilt-type structure has a high printing speed, it is not easy to set and take out a printed material, and there is a problem in workability. Further, the printing machine having the movable structure of the printing table is excellent in safety and workability, but the printing speed is slightly inferior to that of the tilting type. Therefore, the former Aori type printing machine has to work with caution, so the printing speed will be slightly slower, and as a result, the printing speed per unit time of both will be about the same. It is the actual situation.

[0007]

[Means for Solving the Problems]

 [Outline of the Invention] As a result of intensive research conducted by the present inventors in view of the above problems, the printing speed is high like that of a tilting type printing machine, and moreover, it is like a printing machine of a table moving type structure. Table movement semi-automatic screen printing to make it a screen printing machine that has both safety and easy to set and remove printed materials and excellent workability. The present invention was completed based on the knowledge that printing can be performed in the front and back of one printing machine by providing two slide type printing tables in the printing machine and sliding the printing table back and forth. It has come to the end.

That is, the table-moving type semi-automatic screen printing machine of the present invention is a table-moving type semi-automatic screen printing machine having a moving printing table for placing a printing medium thereon and performing screen printing. The printing table is divided into a front printing table and a rear printing table in the front-rear direction of the printing machine, and the front printing table and the rear printing table are integrally formed so as to be movable, and the front printing table is formed. When the printing table is located in front of the printing press, the rear printing table is located at the center of the screen, and when the printing table is located behind the printing press, the front printing table is located on the screen. It is characterized in that it is formed so as to be located in the central portion where the plate is located.

[Detailed Description of the Invention] The table slide type semi-automatic screen printing machine of the present invention will be specifically described below with reference to the drawings, by showing one embodiment thereof. 1 is a partially cutaway right side view of the table moving type semi-automatic screen printing machine of the present invention in which the printing table is moved to the front side, FIG. 2 is a front view thereof, and FIG. 3 is a plan view thereof. FIG. 4 is a plan view of the table moving type semi-automatic screen printing machine according to the present invention with the printing table moved to the rear side. 5 to 8 are enlarged views of respective members constituting the table moving type semi-automatic screen printing machine of the present invention.

[I] Table-Sliding Semi-Automatic Screen Printing Machine (1) Structure As shown in FIG. 1, the table-moving semi-automatic screen printing machine 1 mainly includes a print head portion 2 for screen printing. A print table portion 4 on which the material to be printed 3 is placed and a control portion 5 for controlling the printing machine 1 are formed.

(2) Print Head Part As shown in FIG. 5, the print head part 2 has a screen plate fixing mechanism 7 mainly for fixing the screen plate 6, and a squeegee on the surface of the screen film 6 a of the screen plate 6. It comprises a squeegee operating mechanism 9 for sliding 8 and a screen head 6, a screen plate fixing mechanism 7 and a print head elevating mechanism 11 which supports the squeegee operating mechanism 9 and ascends and descends in the vertical direction.

(A) Screen Plate Fixing Mechanism As shown in FIGS. 5, 7 and 8, the screen plate fixing mechanism 7 includes a plate receiving portion 12 that receives the screen plate 6 from below, and a screen plate 6 of the screen plate 6. A plate fixing cylinder 14 for fixing the screen plate 6 by pressing a cylinder rod 14a against the mold 13, and a plate for determining the position by sliding the screen plate 6 with a positioning knob 15 and adjusting the screen plate 6 in the left-right direction. It is formed of a receiving slide shaft 16.

(B) Squeegee Actuating Mechanism The squeegee operating mechanism 9 is provided with a squeegee 8 at its tip end, and the squeegee 8 slides while pressing the screen film 6a surface of the screen plate 6 with a squeegee sliding mechanism 10. Then, the screen printing ink placed on the screen film 6a is uniformly filled in the holes formed in the screen film 6a. At the same time, the elasticity of the screen film 6a is used to elongate the screen film 6a, and the upper surface of the printing target material 3 placed on the printing table 17 described below, which is disposed below the screen plate 6. Printing is performed by transferring the screen printing ink that has passed through the holes formed in the screen film 6a to the surface of the printing medium 3 while the screen film 6a is in contact therewith. The squeegee 8 is usually made of plate-shaped urethane rubber and a scraper is set on the other side, but a double squeegee in which two scrapers are arranged may be used. Further, the squeegee 8 can be equipped with a scraper.

The squeegee 8 is provided with a squeegee sliding mechanism 10 so that printing can be performed with an appropriate printing pressure by sliding the squeegee 8 on the screen film 6a while applying an appropriate pressing force. Has been. As shown in FIG. 5, this squeegee sliding mechanism 10 rotatably mounts a linear rail 19 fixed to the inside of a traveling frame 18 fixed to the plate receiving slide shaft 16 to a traveling table 20. The stroke travel linear bush 21 which is being operated travels, and the squeegee 8 can be moved in the left-right direction of the printing press 1. A printing pressure shaft 23 is fixed to the traveling table 20 via a squeegee cylinder 22a and a scraper cylinder 22b so that the printing shaft 23 can be moved up and down. By moving the printing shaft 23 up and down, the printing shaft 23 The squeegee 8 attached to the tip can be moved up and down. Printing can be performed with an appropriate printing pressure depending on the degree of elevation. Further, the contact angle of the squeegee 8 with the screen film 6a of the squeegee 8 can be adjusted by the angle adjusting screw 23a attached to the printing shaft 23. Therefore, in screen printing, the squeegee cylinder 22a and the scraper cylinder 20b move the printing pressure shaft 23 up and down to adjust the pressure for pressing the squeegee 8 against the screen film 6a of the screen plate 6 while adjusting the screen plate 6a. Since the surface of the screen film 6a is slid while being pressed in the left-right direction, the screen film 6a can be printed with an appropriate printing pressure.

(C) Print Head Lifting Mechanism The print head portion 2 includes a screen plate 6, a screen plate fixing mechanism 7, and a squeegee slide for sliding a squeegee 8 on the surface of the screen film 6a of the screen plate 6. The squeegee actuating mechanism 9 provided with the mechanism 10 only has a wall thickness of the material 3 to be printed placed on the printing table 17 when the printing table 17 described later slides downward. Depending on the situation, the upper part of the printing medium 3 and the bottom part 6b of the screen plate 6 may collide with each other and good printing may not be performed. Therefore, as shown in FIGS. 1 and 5, the screen plate 6, the screen plate fixing mechanism 7, and the squeegee sliding mechanism 10 for sliding the squeegee 8 on the surface of the screen film 6a of the screen plate 6 are provided. A print head elevating mechanism 11 is provided for supporting the actuating mechanism 9 provided therein, and elevating and lowering the entire print head portion 2 to form an appropriate space between the printing medium 3 and the screen plate 6. There is. The print head raising / lowering mechanism 11 is provided with a print head raising / lowering unit 25 for raising and lowering the print head raising / lowering by a cylinder or the like around an elevation shaft 24.

(3) Printing Table Portion The printing table portion 4 on which the substrate 3 is placed and which can be moved to the lower side of the printing head portion 2 moves the printing table 17 and the printing table 17 up and down. It is composed of a printing table lifting mechanism 26 and a table slide mechanism 27 for moving the printing table 17 in the front-back direction of the printing machine 1.

(A) Printing Table The printing table 17 is a table on which the material to be printed 3 is placed and screen printing is performed. In the table moving type semi-automatic screen printing machine 1 of the present invention, the printing table 17 is arranged before and after the printing machine 1. It is divided into two parts in the direction to form a front table portion 17a and a rear table portion 17b. However, although the front table portion 17a and the rear table portion 17b are divided into two parts, since both are fixed to the table carriage 28, they move integrally in the front-back direction of the printing press. To do. Therefore, as shown in FIGS. 1 and 3, one printing table portion 17a is moved to the front side to take out the printed substrate 3 and a new set of the printed substrate 3 (printing substrate 3 During the replacement, the other printing table portion 17b is in a state where the screen printing is performed under the central print head portion 2. On the contrary, as shown in FIG. 4, one printing table portion 17b is moved to the rear side to take out the printed substrate 3 and a new set of the printed substrate 3 (printing substrate 3 During the replacement, the other printing table portion 17a is in a state where screen printing is performed under the central print head portion 2. Immediately below the printing table portions 17a and 17b, the printing table portions 17a and 17b are moved to the lower side of the screen plate 6 while the substrate 3 is placed, and printing is performed with an appropriate printing pressure. For this purpose, a printing table raising / lowering mechanism 26 for raising / lowering the printing table portions 17a, 17b, and a table slide mechanism 27 for moving the printing table portions 17a, 17b in the front-back direction are provided on the lower side thereof. It has been done.

(B) Table Sliding Mechanism The table sliding mechanism 27, which slides the printing table portions 17a and 17b to move in the front-rear direction of the printing machine, is the table sliding type semi-automatic screen printing machine 1 of the present invention. A table running linear bush 31 installed below the printing table portions 17a and 17b runs on a rail 30 laid on the base 29 in the front-rear direction. The printing table portions 17a and 17b are driven by a table traveling cylinder 33 to drive the linear rail 30 by a table traveling linear bush 31, and the stop position is provided at the end of the linear rail 30. The shock absorbers 34a and 34b are positioned at a fixed position.

(C) Printing Table Lifting Mechanism Between the printing table portions 17a and 17b and the table running linear bush 31 running on the linear rail 30, the printing table portions 17a and 17b are mounted on the printing object 3. In order to move it to the lower side of the screen plate while being placed, the printing table portions 17a and 17b and the bottom part of the screen printing plate 6 are adjusted depending on the thickness of the printing object 3 placed on the printing table parts 17a and 17b. A print table elevating mechanism 26 for elevating the print table portions 17a and 17b in the vertical direction is provided for fine adjustment of the distance between the print table portions 17a and 17b. The printing table raising / lowering mechanism 26 is constituted by a table vertical movement knob 35, a raising / lowering screw shaft 36, a timing belt 37, and a timing pulley 38 fixed on a table carriage 28 as shown in FIG. The timing pulley 38 is rotated by the belt 37, and the rotation causes the printing table portions 17a and 17b made of a honeycomb table fixed to the upper portion of the lifting screw shaft 36 to move up and down. It is basically formed of a print head portion 2 and a control portion 5 for controlling the operation of the print table portion 4.

(4) Control Mechanism (a) Structure Each of the squeegee operating mechanism 9, the print head lifting mechanism 11 of the print head portion 2, the print table lifting mechanism 26 and the table slide mechanism 27 of the printing table portion 4, etc. As shown in FIGS. 1 to 4, the control portion 5 for performing screen printing by controlling the operation of the members is a front operation panel on each of the front side and the rear side of the table moving type semi-automatic screen printing machine 1. 40 and a rear side operation panel 41 are installed.

(B) Operation The table moving type semi-automatic screen printing machine 1 of the present invention is controlled by the front operation panel 40 and the rear operation panel 41 on both the front side and the rear side of the printing machine 1, respectively. One person is placed in each of these and printing is performed by two people. Therefore, an operator who performs a printing operation on the front side operates the front operation panel 40, and an operator who performs a printing operation on the rear side operates the rear operation panel 41.

[II] Operation Method In the operation method of the table moving type semi-automatic screen printing machine 1 of the present invention, it is possible to select and apply from three types of double squeegee mode, right mode and left mode. .. In particular, the right mode is used when printing after applying ink, and the left mode is used when returning the scraper immediately after printing and applying ink to the plate and waiting. The double squeegee mode is used for high-speed printing because it can print in a short time without scraper return.

Double squeegee mode [1]. Set the operation mode selector switch on the operation panel to "semi-automatic" and the squeegee stop position selector switch to "alternate". [2]. Place the printed material on the front table [Set the printed material] [3]. Turn on the foot switch (connect to the operation panel of the front table control mechanism) [4]. Move the front table (simultaneously to the rear table) (5). Print frame descending [6]. Left squeegee printing (moving from left to right) [Print] At the same time, the substrate is placed (replaced) on the rear table [Setting the substrate] [7] . Print frame rise [8]. Foot switch ON (connected to operation panel of rear table control mechanism) [9]. Rear table move (simultaneously moves front table) [10]. Print frame lower [11]. Right squeegee print (Move from right side to left side) [Print] (Left squeegee as seen from the rear table (moves from left side to right side)) At the same time, replace the substrate to be printed on the front table [Replacing the substrate] [12]. One cycle ends in the process

Right mode [1]. Set the operation mode selector switch on the operation panel to "semi-automatic" and the squeegee stop position selector switch to "right". [2]. Place the material to be printed on the printing table [Set the material to be printed] [3]. Turn on the foot switch (connect to the operation panel of the front table control mechanism) [4]. Operate the scraper (from right to left) Move) [Ink] [5]. Move front table (simultaneously move rear table) [6]. Lower print frame [7]. Print left squeegee (move from left to right) [Print] Print on rear table at the same time Place (replace) the body [Set the material to be printed] [8]. Raise the printing frame [9]. Turn on the foot switch (connect to the operation panel of the rear table control mechanism) [10]. Operate the scraper (from right to left) Move) [Ink] (Move from left side to right side when viewed from the rear table) [11]. Move rear table (simultaneously move the front table) [12]. Lower print frame [13]. Print left squeegee (left side to right side) Move to [Print] At the same time in the previous table Replace the printed body [exchanging printing substrate] [14]. 1 cycle ends with the printing frame rising above steps

Left mode [1]. Set the operation mode selector switch on the operation panel to "semi-automatic" and the squeegee stop position selector switch to "left". [2]. Place the material to be printed on the printing table [Set the material to be printed] [3]. Turn on the foot switch (connect to the operation panel of the front table control mechanism) [4]. Move the front table (simultaneously to the rear table) (5). Print frame descending [6]. Left squeegee printing (moving from left to right) [Print] At the same time, the substrate is placed (replaced) on the rear table [Setting the substrate] [7] . Print frame rise [8]. Scraper operation (moving from right side to left side) [Ink placement] [9]. Foot switch ON (connected to operation panel of rear table control mechanism) [10]. Rear table movement (simultaneously front table) [11]. Print frame lowering [12]. Left squeegee printing (moving from left to right) [Printing] At the same time, changing the substrate on the front table [Replacing the substrate] (Right from the rear table) Squeegee) [13]. Print frame rise [14]. Over actuation (movement from right to left) the end of one cycle in the ink put] above steps

[0026]

【Example】

Example 1 Printing Apparatus Table-moving semi-automatic screen printing machine of the present invention having a structure as shown in FIGS. 1 to 6 and MS-S metal mask manufactured by Murakami Screen Co., Ltd. (material: SUS-304, metal thickness: 150 μm) , Metal size: 280 × 400 mm, pattern: QFP with a pitch of 0.5 mm, and a solder paste RX36 3 for surface mounting made by Nihon Solder Co., Ltd. in a double squeegee mode of the following operation method. Cream solder printing was performed using 207 KFO.

Operation method (1). Turn on the power switch. (2). Set the stop position with the squeegee stop position switch. (3). Use the frame stop position switch to raise the frame by 20 mm. (4). Unlock the printing pressure manual switch to make it neutral and attach two compound squeegees with a hardness of 70-75 degrees. (5). Loosen the knob of the screen support, slide it according to the size of the frame to be used, attach the frame and fix it with the plate fixing switch. (6). Determine the position of the sensor switch by matching the stroke of the squeegee and scraper with the printing area. About 180 mm between sensor switches. (7). Turn on the blower switch, align the printed material on the table with the printing position on the screen, and fix it with a jig or a pad. (8). Slide the table with the slide manual switch, lower the frame with the frame stop position switch, loosen the table vertical stop knobs (4 places) between the table and the screen, and turn the table vertical movement knob. And set it to 1.2 mm. Use the table fine adjustment handle (X, Y, O) to finely adjust the printing position. (9). Set the air pressure with the printing pressure manual switch to 5 kg / cm ² for the original pressure, and 3 kg / cm ² for the left pressure and right pressure of the squeegee. Adjust the printing pressure with the knob of the cylinder screw. (10). Move the squeegee to the left with the manual switch and feed the cream solder onto the plate. (11). Set the squeegee speed adjustment dial to 2, and set the timer to 0.5 seconds, 1 second and 0 seconds. (12). Release the printing pressure manual switch, set the squeegee stop position switch to "alternate", set the operation mode switch to "auto", and press the foot switch to print.

Operating state [1]. Place the printing medium on the front table [Set the printing medium] [2]. Foot switch ON (operate with the operation panel of the front table control mechanism) [3]. Front table Move (simultaneously moves the rear table) [4]. Print frame lowers [5]. Left squeegee printing (moves from left side to right side) [Print] Set] [6]. Print head lifted [7]. Foot switch ON (operated by the operation panel of rear table control mechanism) [8]. Rear table moved (simultaneously moved front table) [9]. Print frame lowered [ 10]. Right squeegee printing (moving from right side to left side) [Printing] (Left squeegee as seen from the rear table (moving from left side to right side)) At the same time, replace the printing material on the front table [Replacing the printing material] [11] ]. Print frame rise One cycle is completed by the above process

The performed results above [1]. From step [6]. Of the process up in 9 seconds, [7]. Step [11] to. Step is carried out for six seconds, the printing substrate It took about 3 seconds to set and replace, but since the printing target can be set and replaced within the time (6 seconds) when printing on the other side, there is no loss time, and there is no lost time. I was able to improve the printing speed (up 50%). Also, since there is no doctor return, the operation time was half that of the known table-moving type semi-automatic screen printing machine.

[0030]

[Effect of the device]

 A table moving type semi-automatic screen printing machine of the present invention in which two slide type printing tables are provided and the printing tables are integrally slid back and forth so that printing can be performed in the front and rear portions of one printing machine. Is faster than the screen printing speed of a known table moving type semi-automatic screen printing machine, but is excellent in safety and workability.

[Brief description of drawings]

FIG. 1 is a partially cutaway right side view of a table moving type semi-automatic screen printing machine according to the present invention in a state where a printing table is moved to the front side.

FIG. 2 is a front view of the table moving type semi-automatic screen printing machine of FIG.

FIG. 3 is a plan view of the table moving type semi-automatic screen printing machine of FIG. 1.

FIG. 4 is a plan view of the table moving type semi-automatic screen printing machine of the present invention with the printing table moved to the rear side.

FIG. 5 is a right side view of a print head portion of the table moving type semi-automatic screen printing machine of the present invention.

FIG. 6 is a side view of a printing table lifting mechanism of the table moving type semi-automatic screen printing machine of the present invention.

FIG. 7 is a plan view of a screen printing plate fixing portion of the table moving type semi-automatic screen printing machine of the present invention.

FIG. 8 is a right side view of the screen printing plate fixing portion of FIG. 7.

FIG. 9 is a perspective view of a known table moving type semi-automatic screen printing machine.

[Explanation of Codes] 1 table moving type semi-automatic screen printer 2 printing head part 3 printed material 4 printing table part 5 control part 6 screen plate 6a screen film 7 screen plate fixing mechanism 8 squeegee 9 squeegee operating mechanism 10 squeegee sliding mechanism 11 Printing Head Lifting Mechanism 12 Plate Receiving Section 13 Form 14 Plate Fixing Cylinder 14a Cylinder Rod 15 Positioning Knob 16 Plate Receiving Slide Shaft 17 Printing Table 17a Front Printing Table 17b Rear Printing Table 18 Travel Frame 19 Linear Rail 20 Travel Platform 21 Stroke Traveling Linear Bushing 22a Squeegee Cylinder 22b Scraper Cylinder 23 Printing Shaft 23a Angle Adjustment Screw 24 Head Elevating Shaft 25 Printing Head Elevating Unit 26 Printing Table Elevating Mechanism 2 Table slide mechanism 28 Table dolly 29 Base of printing machine 30 Linear rail 31 Table traveling linear bush 32 Gear 33 Positioning rails 34a, 34b Shock absorber 35 Table vertical movement knob 36 Lift screw shaft 37 Timing belt 38 Timing pulley 40 Front operation panel 41 Rear operation panel

Claims (4)

[Scope of utility model registration request] 1. A table-moving type semi-automatic screen printing machine having a moving printing table for placing a printing medium thereon and performing screen printing, wherein the moving printing table is a front part in the front-back direction of the printing machine. It is divided into a printing table and a rear printing table, and the front printing table and the rear printing table are integrally movably formed, and the front printing table is located in front of the printing machine. Sometimes the rear printing table is located in the central part where the screen plate is located, and when the rear printing table is located behind the printing press, the front printing table is located in the central part where the screen plate is located. A table-moving semi-automatic screen printing machine characterized by the following features. 2. The table moving type semi-automatic screen printing machine according to claim 1, wherein the moving printing table runs on running rails arranged in the front-rear direction of the printing machine. 3. The table moving type semi-automatic screen printing machine according to claim 1, wherein operation control functions for operating the front printing table or the rear printing table are provided on the front side and the rear side of the printing machine, respectively. 4. The table moving type semi-automatic screen printing machine according to claim 1, wherein the front printing table and the rear printing table are respectively provided with a printing table lifting mechanism.