CN111391482A - A printing press with curve off-plate function - Google Patents

Abstract

The invention discloses a printing machine with the function of curve off-plate. The frame is provided with a worktable, a product positioning mechanism, a printing mechanism and a screen plate lifting mechanism, the printing mechanism is located above the worktable, and a screen is arranged between the two. Plate lifting mechanism, the screen lifting mechanism includes a screen mounting frame, a first lifting module and a second lifting module. The first lifting module and the second lifting module are fixed on both sides of the rack, and the telescopic ends of the two are symmetrical. It is arranged on both sides of the screen plate mounting frame, and can simultaneously or separately lift the screen plate mounting racks on their respective sides. The screen plate mounting frame is located above the workbench. The two lifting modules are driven to move up and down, which can realize the curve transformation during the printing process of the off-plate height; the cross arm is driven by the movement module to drive the squeegee and the glue return plate to complete the printing action, which can ensure high-precision printing, and ensure the accuracy and quality of the machine. stability.

Description

A printing press with curve off-plate function

technical field

The present invention relates to the technical field of printing presses, in particular to a printing press with a function of curve off-plate.

Background technique

A printing press is a machine that prints text and images. Modern printing presses generally consist of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). In the printing process, the text and images to be printed are first made into printing plates (screen plates), which are installed on the printing press, and then the ink is applied to the places with the text and images on the printing plate manually or by the printing press, and then Transfer directly or indirectly to paper or other substrates such as textiles, metal plates, plastics, leather, wood, glass and ceramics to reproduce the same print as the printing plate.

In the existing printing machine, after squeegeeing and re-gluing, the screen plate will be lifted directly for unloading, but for some printing products with special printing requirements, such as when the viscosity of the printing paste is small or large , the screen plate is directly separated from the printed product as a whole, and the printing ink may be drawn on the printed product, or the printed product may be sticked up, which will affect the appearance of the printed product and lead to a decrease in the quality of the printed product.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a printing machine with the function of curve off the plate, the screen plate mounting frame is driven by the first lifting module and the second lifting module to move up and down, so that the curve transformation can be realized during the printing process of the off plate height; The arm is driven by the motion module to drive the squeegee and the return plate to complete the printing action, which can ensure high-precision printing and ensure the accuracy and stability of the machine.

In order to achieve the above-mentioned purpose, the technical scheme adopted in the present invention is: a printing press with a function of curve off-plate, comprising a frame, and the frame is provided with a workbench, a product positioning mechanism, a printing mechanism and a screen lifting mechanism, The printing mechanism is located above the workbench, and there is a screen lifting mechanism between the two. The screen lifting mechanism includes a screen mounting frame, a first lifting module and a second lifting module. The first lifting module The module and the second lifting module are fixed on both sides of the rack, and the telescopic ends of the two are symmetrically arranged on both sides of the screen mounting frame, and can simultaneously or separately lift the screen mounting frames on their respective sides. The plate mount is located above the workbench.

As a further optimization, the first lifting module includes a first motor, a first transmission wheel, a first transmission belt, a first synchronizing wheel, a first screw rod and a first ejector rod, and the first motor is arranged on the frame The output end is provided with a first transmission wheel, a pair of the first screw rods are placed vertically on both sides of the first motor, and the first synchronizing wheel is set at the lower end of the first screw rod, which passes through the first transmission belt Connected with the first transmission wheel, the first lifting block on the first screw rod is provided with a first top rod, and the upper end of the first top rod is hinged to the lower end of the screen plate mounting frame.

As a further optimization, the second lifting module is located on the opposite side of the first lifting module, which includes a second motor, a second transmission wheel, a second transmission belt, a second synchronizing wheel, a second screw rod and a second top A rod, the output end of the second motor is provided with a second transmission wheel, a pair of the second screw rods are vertically placed on both sides of the second motor, and the second synchronizing wheel is set at the lower end of the second screw rod, It is connected with the second transmission wheel through the second transmission belt, the second lifting block on the second screw rod is provided with a second top rod, and the upper end of the second top rod is hinged to the lower end of the screen plate mounting frame.

As a further optimization, the rack is provided with a first vertical slide rail and a second vertical slide rail, and the first lift block and the second lift block are respectively slidably arranged on the first vertical slide rail and on the second vertical rail.

As a further optimization, the printing mechanism includes a motion module and a printing assembly, the printing assembly is disposed on the motion module, and includes a pressing cylinder, a mounting plate, a transverse arm, a first cylinder, a second cylinder, and a squeegee. plate and glue return plate, a pair of the pressing cylinders are symmetrically arranged on the motion module, the telescopic ends of which are provided with mounting plates, the two ends of the transverse arm are fixed on a pair of mounting plates, the first The air cylinder and the second air cylinder are arranged on both sides of the transverse arm, and the lower ends of the two are respectively provided with a rubber scraper and a rubber return plate.

As a further optimization, the motion module includes a driving motor, a third transmission wheel, a transmission shaft, a third synchronizing wheel, a third transmission belt and a first clamping block. The driving motor is arranged on the frame, and its output end A third transmission wheel is provided, and the third transmission wheel is connected to a transmission shaft rotatably arranged on the frame. Both ends of the transmission shaft are provided with third synchronizing wheels, and a pair of the third synchronizing wheels A pair of third transmission belts arranged in parallel are driven to rotate, the third transmission belt is provided with a first clamping block, and the pressing cylinder is arranged on the first clamping block.

As a further optimization, the frame is provided with a first horizontal slide rail, and the first clamping block is slidably arranged on the first horizontal slide rail.

As a further optimization, the rack is provided with an installation table below the workbench, and a pair of limit components are arranged on the installation table perpendicular to each other, and the limit components include a limit motor, a fourth transmission wheel, The fourth synchronizing wheel, the fourth transmission belt, the cross bar and the second horizontal slide rail, the limit motor is arranged on the installation table, and its output end is provided with a fourth transmission wheel, and the opposite side of the fourth transmission wheel is provided with The fourth synchronizing wheel is connected by a fourth transmission belt. A pair of the cross bars are symmetrically fixed on the fourth transmission belt. A pair of limit blocks are arranged on the cross bars. bit blocks to match the vias.

As a further optimization, the upper end of the limiting block is fixed with a limiting reinforcing plate.

As a further optimization, it also includes a material-moving mechanism. The material-moving mechanism is located above the worktable and includes a linear module, a sliding rod and a suction head assembly. A pair of the linear modules is fixed on both sides of the frame, so Both ends of the sliding rod are arranged on a pair of linear modules, and a plurality of suction head assemblies are arranged at the lower end thereof.

Compared with the prior art, the present invention has the following beneficial effects:

1. The stencil mounting frame is driven by the first lifting module and the second lifting module to move up and down, and both use servo + ball screw to lift, which can realize the curve transformation during the printing process of the off-plate height and achieve special printing requirements;

2. The cross arm is supported by the frame and the support plate on the frame, and is driven by the motion module to drive the squeegee and the glue return plate to complete the printing action, which can ensure high-precision printing and ensure the accuracy and stability of the machine.

Description of drawings

FIG. 1 is a structural diagram of the present invention.

FIG. 2 is a structural diagram of the printing mechanism of the present invention.

FIG. 3 is a structural diagram of the screen lift mechanism of the present invention.

FIG. 4 is an enlarged view of A in FIG. 3 .

FIG. 5 is a structural diagram of the product positioning mechanism of the present invention.

FIG. 6 is a structural diagram of the material moving mechanism of the present invention.

In the figure, 1. Rack; 11. Installation table; 2. Workbench; 3. Printing mechanism; 4. Screen lifting mechanism; 5. Product positioning mechanism; 6. Material moving mechanism; 311. Drive motor; 312. Section 313. Transmission shaft; 314. The third synchronizing wheel; 315. The third transmission belt; 316. The first clamping block; 321. The pressing cylinder; 322. The mounting plate; Cylinder; 325. Squeegee; 326. Second Cylinder; 327. Glue Back; 41. Screen Mounting Frame; 421. First Motor; 422. First Transmission Wheel; 423. First Synchronous Wheel; 424. Section 425. The first lead screw; 426. The first lifting block; 427. The first ejector rod; 428. The first vertical slide rail; 431. The second motor; 434. Second screw; 435. Second lifting block; 436. Second ejector rod; 51. Limit assembly; 511. Fourth transmission wheel; 512. Fourth synchronizing wheel; 515. Second horizontal slide rail; 516. Cross bar; 517. Limit block; 518. Limit reinforcement plate; 61. Linear module; 62. Slide bar; 63. Tip assembly.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

As shown in Figures 1 to 6, a printing machine with a function of curve off-plate includes a frame 1, and the frame 1 is provided with a worktable 2, a product positioning mechanism 5, a printing mechanism 3 and a screen lifting mechanism 4. The mechanism 3 is located above the workbench 2, and there is a screen lifting mechanism 4 between the two. The screen lifting mechanism 4 includes a screen mounting frame 41, a first lifting module and a second lifting module. The first lifting module and the second lifting module are fixed on both sides of the frame 1, and the telescopic ends of the two are symmetrically arranged on both sides of the screen plate mounting frame 41, and can simultaneously or separately lift the screen plate mounting frame 41 on their respective side, the screen plate The mounting frame 41 is located above the workbench 2; the first lifting module includes a first motor 421, a first transmission wheel 422, a first transmission belt 424, a first synchronizing wheel 423, a first screw rod 425 and a first ejector rod 427, The first motor 421 is arranged on the frame 1, and its output end is provided with a first transmission wheel 422, a pair of first screw rods 427 are vertically arranged on both sides of the first motor 421, and a first synchronizing wheel 423 is arranged on the first screw The lower end of the rod 425 is connected with the first transmission wheel 422 through the first transmission belt 424, the first lifting block 426 on the first screw rod 425 is provided with a first top rod 427, and the upper end of the first top rod 427 is hinged to the net The lower end of the plate mounting frame 41; the second lifting module is located on the opposite side of the first lifting module, which includes a second motor 431, a second transmission wheel, a second transmission belt 433, a second synchronizing wheel 432, and a second screw 434 and the second top rod 436, the output end of the second motor 431 is provided with a second transmission wheel, a pair of second screw rods 434 are vertically placed on both sides of the second motor 431, and the second synchronizing wheel 432 is provided on the second screw rod The lower end of 434 is connected with the second transmission wheel through the second transmission belt 433, the second lifting block 435 on the second screw rod 434 is provided with a second top rod 436, and the upper end of the second top rod 436 is hinged to the screen plate installation. the lower end of the frame 41 .

Fix the screen on the screen mounting frame, and place the items to be printed on the worktable. The first lifting module and the second lifting module can drive the screen mounting frame to move down according to the program settings, so that the The screen plate is in contact with the items to be printed on the worktable, and the product position is kept fixed by the product positioning mechanism. The printing mechanism reciprocates on the screen plate to complete the product printing. After the printing is completed, the first lifting module and the second lifting module It can be controlled according to the established PLC program, and successively drives the screen plate mounting frame to rise, so that the screen plate is inclined to leave the printed article, and the curve of the screen plate is realized. It is suitable for special working conditions and processing technology, such as, When the viscosity of the printing paste is not large, it has a certain fluidity. When the screen plate leaves the printed article as a whole at the same time, the quality of the printing surface of the printed product will be degraded; at the same time, the first lifting module and the second lifting module use Servo and ball screw drive ensure the accuracy and stability of the plate spacing, so that the printing conditions will not change during the printing process.

The rack 1 is provided with a first vertical slide rail 438 and a second vertical slide rail, and the first lift block 426 and the second lift block are respectively slidably arranged on the first vertical slide rail 428 and the second vertical slide rail 428. On the slide rail, the slide rail can assist the ejector rod to move up and down accurately.

The printing mechanism 3 includes a moving module and a printing assembly. The printing assembly is arranged on the moving module and includes a pressing cylinder 321, a mounting plate 322, a transverse arm 323, a first cylinder 324, a second cylinder 326, a squeegee 325 and Glue return plate 327, a pair of pressing cylinders 321 are symmetrically arranged on the motion module, the telescopic ends are provided with mounting plates 322, both ends of the transverse arm 323 are fixed on the pair of mounting plates 322, the first cylinder 324 and The second air cylinder 326 is disposed on both sides of the transverse arm 323, and the lower ends of the two are respectively provided with a rubber scraper 325 and a rubber return plate 327; the motion module includes a drive motor 311, a third transmission wheel 312, a transmission shaft 313, a third The synchronizing wheel 314, the third transmission belt 315 and the first clamping block 316, the driving motor 311 is arranged on the frame 1, the output end is provided with a third transmission wheel 312, and the third transmission wheel 312 is rotatably arranged on the frame 1 The transmission shaft 313 on the upper part is connected by transmission, and both ends of the transmission shaft 313 are provided with third synchronizing wheels 314. A pair of third synchronizing wheels 314 drives a pair of third transmission belts 315 arranged in parallel to rotate. A clamping block 316, the pressing cylinder 321 is arranged on the first clamping block 316; the frame 1 is provided with a first horizontal slide rail, and the first clamping block 316 is slidably arranged on the first horizontal slide rail .

The cross arm can be set to slide horizontally. It is driven by the pressing cylinder to lift synchronously, and then the first cylinder drives the squeegee to perform the squeegee action. After the printing is completed, the squeegee is reset, and the second cylinder drives the glue plate to return the glue. Action, the cross arm is supported by the frame and the support plate located on the frame, which runs stably, ensures high-precision printing, and ensures the precision and stability of the machine.

The rack 1 is provided with an installation table 11 under the worktable 2, and a pair of limit components 51 are arranged on the installation table 11 perpendicular to each other. The limit components 51 include a limit motor, a fourth transmission wheel 511, and a fourth synchronizing wheel. 512, the fourth transmission belt 513, the cross bar 516 and the second horizontal slide rail 515, the limit motor is arranged on the installation table 11, the output end is provided with a fourth transmission wheel 511, and the opposite side of the fourth transmission wheel 511 is provided with a first The four synchronizing wheels 512 are connected to each other by the fourth transmission belt 513. A pair of transverse rods 516 are respectively fixed on the fourth transmission belt 513 symmetrically through the second clamping block 514. The transverse rods 516 are slidably arranged at the second level. A pair of limit blocks 517 are arranged on the slide rail 515 and the cross bar 516 , and through holes matching the limit blocks 517 are arranged on the worktable 2 ;

The limit block can pass through the through hole on the worktable, and the limit motor can drive the fourth transmission wheel to drive the fourth transmission belt to circulate in a circular motion. The cross bar moves in the opposite direction or in the opposite direction, so that the limit reinforcing plate is moved in the opposite direction or in the opposite direction through the limit block, so as to realize the clamping or loosening of the four sides of the object to be printed, and complete the positioning action before printing.

The printing machine with the function of curve off-plate also includes a material moving mechanism 6, which is located above the worktable 2 and includes a linear module 61, a sliding rod 62 and a suction head assembly 63, and a pair of linear modules 61 are fixed on the On both sides of the frame 1, the two ends of the sliding rod 62 are arranged on a pair of linear modules 61, and a plurality of suction head assemblies 63 are arranged at the lower end thereof. The rod enables the suction head located on it to transport the item to be printed from the loading point to the table.

The specific parameters of this machine are: printing area: 1500mm*900mm; table area: 1800mm*1200mm; maximum screen frame: 2200mm*1400mm; this equipment is fully servo controlled, printing parameters are set in full data, and the production efficiency is high; the printing process precision High, stable repeat accuracy, can well ensure the printing position accuracy and film thickness accuracy, excellent printing quality.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (10)

1. a printing press with a curve off-plate function, characterized in that it comprises a frame, and the frame is provided with a workbench, a product positioning mechanism, a printing mechanism and a screen lift mechanism, and the printing mechanism is located on the workbench. Above, there is a screen lifting mechanism between the two, the screen lifting mechanism includes a screen mounting frame, a first lifting module and a second lifting module, the first lifting module and the second lifting module The group is fixed on both sides of the rack, and the telescopic ends of the two are symmetrically arranged on both sides of the screen mounting frame, and the screen mounting frames on their respective sides can be lifted at the same time or separately. above. 2 . The printing press with curve release function according to claim 1 , wherein the first lifting module comprises a first motor, a first transmission wheel, a first transmission belt, a first synchronizing wheel, a first A screw rod and a first top rod, the first motor is arranged on the frame, and its output end is provided with a first transmission wheel, a pair of the first screw rods are vertically placed on both sides of the first motor, the first A synchronizing wheel is arranged at the lower end of the first screw rod, which is connected to the first transmission wheel through the first transmission belt. The first lifting block on the first screw rod is provided with a first top rod, and the first top rod The upper end of the screen is hinged to the lower end of the screen mounting frame. 3 . The printing press with curve release function according to claim 2 , wherein the second lifting module is located on the opposite side of the first lifting module, and comprises a second motor, a second transmission wheel, The second transmission belt, the second synchronizing wheel, the second screw rod and the second top rod, the output end of the second motor is provided with a second transmission wheel, and a pair of the second screw rods are vertically placed on two sides of the second motor. On the side, the second synchronizing wheel is arranged at the lower end of the second screw rod, which is connected with the second transmission wheel through the second transmission belt, and the second lifting block on the second screw rod is provided with a second top rod, so The upper end of the second top rod is hinged to the lower end of the screen plate mounting frame. 4 . The printing press with curve release function according to claim 3 , wherein the frame is provided with a first vertical sliding rail and a second vertical sliding rail, and the first lifting block and the The second lifting blocks are respectively slidably arranged on the first vertical slide rail and the second vertical slide rail. 5 . The printing press with curve release function according to claim 1 , wherein the printing mechanism comprises a motion module and a printing assembly, and the printing assembly is arranged on the motion module and includes a pressing cylinder. 6 . , a mounting plate, a cross arm, a first cylinder, a second cylinder, a rubber scraper and a rubber return plate, a pair of the lower pressing cylinders are symmetrically arranged on the motion module, and the telescopic ends are provided with mounting plates, the said Both ends of the transverse arm are fixed on a pair of mounting plates, the first air cylinder and the second air cylinder are arranged on both sides of the transverse arm, and the lower ends of the two are respectively provided with a rubber scraper and a glue return plate. 6 . The printing press with curve off-plate function according to claim 5 , wherein the motion module comprises a driving motor, a third transmission wheel, a transmission shaft, a third synchronizing wheel, a third transmission belt and a first The clamping block, the drive motor is arranged on the frame, and its output end is provided with a third transmission wheel, the third transmission wheel is connected to the transmission shaft rotatably arranged on the frame, and two parts of the transmission shaft are connected. Each end is provided with a third synchronizing wheel, and a pair of said third synchronizing wheels drives a pair of third transmission belts arranged in parallel to rotate. on a clamping block. 7 . The printing press with curve release function according to claim 6 , wherein the frame is provided with a first horizontal slide rail, and the first clamping block is slidably arranged on the first plate. 8 . on the horizontal rail. 8 . The printing machine with the function of curve off-plate according to claim 1 , wherein a mounting table is provided on the frame below the worktable, and a pair of limit stops are arranged on the mounting table perpendicular to each other. 9 . The limit assembly includes a limit motor, a fourth transmission wheel, a fourth synchronizing wheel, a fourth transmission belt, a cross bar and a second horizontal slide rail. The limit motor is arranged on the installation table, and its output end is set There is a fourth transmission wheel, and the opposite side of the fourth transmission wheel is provided with a fourth synchronizing wheel, and the two are connected by a fourth transmission belt. A pair of said transverse rods are symmetrically fixed on the fourth transmission belt. A pair of limit blocks are arranged thereon, and through holes matching the limit blocks are arranged on the worktable. 9 . The printing machine with the function of curve off-plate according to claim 8 , wherein the upper end of the limiting block is fixed with a limiting reinforcing plate. 10 . 10 . The printing press with curve release function according to claim 1 , further comprising a material-moving mechanism, the material-moving mechanism is located above the worktable and comprises a linear module, a sliding rod and a suction head. 11 . A pair of the linear modules is fixed on both sides of the frame, the two ends of the sliding rod are arranged on the pair of linear modules, and the lower end is provided with a plurality of suction head assemblies.

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