Centering device for four-color printing

Abstract

The utility model discloses a centering device for four-color printing, which comprises a four-color printing machine and a printing box below the four-color printing machine, the printing box is arranged below the four-color printing machine, a printing head of the four-color printing machine extends to the inner side of the printing box, and a conveying belt is transversely arranged in the printing box. One transmission roller in the conveying belt is fixedly connected with the output end of an external motor through a coupler, and two belt type guide rails are arranged above the conveying belt in parallel; according to the four-color printing machine, the printing box is arranged below the printing head of the four-color printing machine, the printing frame with the belt type guide rail is arranged on the conveying belt of the printing box, and the placing panel arranged in the printing frame in a sleeving mode through the sliding rod is pushed, so that a to-be-printed product can move along the surface of the sliding rod along with the placing panel; the effect of flexibly adjusting the printing position of the to-be-printed matter is achieved, centering of the to-be-printed matter is facilitated, and the printing position of the to-be-printed matter is matched with the position of a printing roller of the four-color printing machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially, relates to a centering device for four -color printing. BACKGROUND

[0002] Four -color printing machine refers to the printing machine that realizes the offset printing method of map duplication by utilizing four inks of black, medium blue, brown and green, and four -color printing is the offset printing method that realizes full -color duplication by using red, yellow, blue three primary colors and black color material according to subtractive color mixing principle.

[0003] Through the search, the application number CN202320250567.9 discloses a novel four -color printing machine belongs to printing equipment technical field, including the printing machine shell, the printing machine shell inner wall is connected with the placing frame, the placing frame is connected with the printing machine body, the printing machine shell upper end is connected with the heat dissipation assembly, the printing machine shell both sides are provided with finished product placing mechanism, the placing frame slidingly connected with two symmetrical C-shaped soundproof cotton, the finished product placing mechanism includes the bearing plate connected on the printing machine shell, the bearing plate is connected with two symmetrical vertical boards, the bearing plate bottom is connected with the mounting ring, the mounting ring inner side is connected with the electric push rod, the electric push rod output end is connected with the L-shaped plate, the L-shaped plate inner end is connected with the guide column, the guide column is connected with the moving clamping plate, and the bearing plate is slidingly connected with the tray.The utility model realizes the clamping uniform placement action to the paper shell of different sizes after printing, and conveniently uniform transfer is carried out to the paper shell, and the working efficiency is improved.

[0004] But the above scheme does not set up "centering" device, adopts the clamping mechanism although can center the printing product and settle, but cannot guarantee that the printing position of the printing product matches the printing roll position of the printing machine, thereby causing the phenomenon that the printing mark or logo pattern deflects or deviates from the predetermined position.

[0005] Therefore, a centering device for four -color printing is proposed, which has the advantage of easy adjustment of printing position, thereby solving the problems in the above background technology. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the shortcomings in the prior art and provides a centering device for four -color printing.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of centering device for four-color printing, including four-color printing machine and the printing box below it, the lower portion of four-color printing machine is provided with printing box, and the printing head of four-color printing machine extends to the inside of printing box, the inside of printing box is horizontally installed with conveyor belt, and one of the transmission rolls in conveyor belt is fixedly connected with the output end of external motor by coupling, the top of conveyor belt is provided with two belt guide rails in parallel, and the two belt guide rails are all welded with the inner wall of printing box, and printing frame is arranged between the two belt guide rails, the left and right sides of printing frame are all installed with guide pulley that is rollingly connected with belt guide rail, and two slide rods are welded in the inside of printing frame, placing panel is installed on the two slide rods of printing frame, and friction surface is arranged on the inner wall of printing frame and the side surface of placing panel, connecting seat is fixed on conveyor belt by screw, and connecting groove is formed in the top surface of connecting seat, connecting block is welded on the bottom of printing frame, and connecting block is inserted into the connecting groove of connecting seat, bolt connected with connecting block is arranged on the side surface of printing frame, controller is installed on the right side of the top surface of printing box, and the output end of controller is electrically connected with the external motor of conveyor belt.

[0008] As further description of the above technical solution: two limiting strips are welded in the inside of printing box, and the two limiting strips are all above conveyor belt, and pressure sensor is embedded and installed on the facing surface of the two limiting strips, and the pressure sensor is electrically connected with controller.

[0009] As further description of the above technical solution: one side of printing frame is threadedly connected with a plurality of plum knobs, and one end of two plum knobs is abutted with the side surface of placing panel.

[0010] As further description of the above technical solution: rectangular structure material opening is formed in the both ends of printing box corresponding to printing frame, and the size of material opening is greater than the width of printing frame.

[0011] As further description of the above technical solution: two vacuum chuck mounting holes are formed in the surface of placing panel.

[0012] As further description of the above technical solution: the cross section of belt guide rail is U-shaped structure, and the size of the inside space of belt guide rail is matched with the size of guide pulley.

[0013] The utility model has the following beneficial effects:

[0014] In this invention, a printing box is installed below the print head of a four-color printing press, and a printing frame with a belt guide rail is installed on the conveyor belt of the printing box. By pushing the placement panel installed inside the printing frame using a sliding rod, the workpiece to be printed can move along the surface of the sliding rod following the placement panel, achieving the effect of flexibly adjusting the printing position of the workpiece and facilitating the "centering" of the workpiece. This ensures that the printing position of the workpiece matches the position of the printing roller of the four-color printing press. Since the printing frame is connected by a connecting block and a connecting seat through a connecting groove, and the bolts installed on the side of the connecting seat are connected to the connecting block, as the conveyor belt drives the printing frame to move laterally through the connecting seat, the guide wheels on both sides of the printing frame and the belt guide rail installed parallel to the inner wall of the printing box roll relative to each other until the placement panel on the printing frame can easily and smoothly pass under the print head of the four-color printing press, thus improving the printing quality of the workpiece. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the structure of a center-finding device for four-color printing according to the present invention;

[0016] Fig. 2 This is a schematic diagram of the belt guide rail and printing frame structure of a centering device for four-color printing according to this utility model.

[0017] Fig. 3 This is a partial structural diagram of the conveyor belt of a centering device for four-color printing according to this utility model.

[0018] Legend:

[0019] 1. Four-color printing press; 2. Printing box; 3. Conveyor belt; 4. Belt guide rail; 5. Printing frame; 6. Feed port; 7. Controller; 8. Limit bar; 9. Pressure sensor; 10. Connecting block; 11. Connecting seat; 12. Bolt; 13. Placement panel; 14. Slide bar; 15. Friction surface; 16. Plum blossom knob; 17. Guide wheel; 18. Connecting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] According to an embodiment of the present invention, a center-finding device for four-color printing is provided.

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figs. 1-3As shown, according to the four-color printing centering device of the utility model embodiment, including four color printing machine 1 and its below printing box 2, four color printing machine 1 below is provided with printing box 2, and the printing head of four color printing machine 1 extends to the inside of printing box 2, and the inside of printing box 2 is horizontally provided with conveying belt 3, and one of the transmission rollers in conveying belt 3 is fixedly connected with the output end of external motor through coupling, and the upper side of conveying belt 3 is provided with two belt guide rails 4, and the two belt guide rails 4 are welded with the inner wall of printing box 2, and a printing frame 5 is arranged between the two belt guide rails 4, and the left and right sides of printing frame 5 are both provided with guide wheels 17 connected with the belt guide rail 4, and two slide rods 14 are welded on the inside of printing frame 5, and a placing panel 13 is installed on the two slide rods 14 of printing frame 5, and a friction surface 15 is arranged on the inner wall of printing frame 5 and the side of placing panel 13, a connecting seat 11 is fixed on conveying belt 3 through screws, and a connecting groove 18 is formed on the top surface of connecting seat 11, a connecting block 10 is welded on the bottom of printing frame 5, and the connecting block 10 is inserted into the connecting groove 18 of connecting seat 11, and a bolt 12 connected with connecting block 10 is arranged on the side of printing frame 5, a controller 7 is installed on the right side of the top surface of printing box 2, and the output end of controller 7 is electrically connected with the external motor of conveying belt 3, the components and principles of four color printing machine 1 are known technology and mature products, so further explanation is not needed.

[0023] In one embodiment, two limiting strips 8 are welded inside printing box 2, and the two limiting strips 8 are both above conveying belt 3, and the opposite surfaces of the two limiting strips 8 are both embedded with pressure sensors 9, and the pressure sensors 9 are electrically connected with controller 7, when the connecting seat 11 of conveying belt 3 contacts with the limiting strip 8 on the left side or the right side of printing box 2, the pressure sensor 9 on the limiting strip 8 detects the pressure vertically and feeds back to controller 7, and controller 7 cuts off the power supply of the driving device of conveying belt 3 through relay, so as to achieve the effect of automatic stopping, and prevent the collision between printing frame 5 and printing box 2, and the controller 7 is a general controller 7 in the market, which can be a single-chip microcomputer processor, PLC processor or MCU processor.

[0024] In one embodiment, a plurality of rose nuts 16 are threadedly connected with one side of printing frame 5, and one end of two rose nuts 16 abuts with the side of placing panel 13, and the plurality of rose nuts 16 are arranged to lock the placing panel 13 at any position in combination with the friction surface 15 on the side of placing panel 13 and the inner wall of printing frame 5.

[0025] In one embodiment, a rectangular structure of material port 6 is formed on both ends of printing box 2 corresponding to printing frame 5, and the size of material port 6 is greater than the width of printing frame 5, and the material port 6 is arranged to facilitate the feeding and discharging of the printed matter.

[0026] In one embodiment, the surface of the placing panel 13 is provided with two vacuum chuck mounting holes, through the setting of the vacuum chuck mounting holes, the vacuum chuck is easily installed, thereby facilitating the suction of the to-be-printed product and ensuring the printing effect.

[0027] In one embodiment, the cross section of the belt guide rail 4 is a U-shaped structure, and the size of the inner space of the belt guide rail 4 is matched with the size of the guide wheel 17, and through the setting of the belt guide rail 4 and the guide wheel 17, the horizontal movement of the printing frame 5 is guided.

[0028] Working principle:

[0029] In use, first, the to-be-printed product is placed on the placing panel 13, and the to-be-printed product is fixed properly, and the placing panel 13 installed in the printing frame 5 by the slide rod 14 is pushed, so that the to-be-printed product can move along the surface of the slide rod 14 with the placing panel 13, facilitating the "centering" of the to-be-printed product, so that the printing position of the to-be-printed product is matched with the printing roller position of the four-color printing machine 1, when printing, the conveyor belt 3 is started to work, and with the conveyor belt 3 driving the printing frame 5 to move horizontally through the connecting seat 11, the guide wheels 17 on both sides of the printing frame 5 relatively roll with the belt guide rails 4 installed in parallel on the inner wall of the printing box 2, until the placing panel 13 on the printing frame 5 stably passes under the printing head of the four-color printing machine 1, and the to-be-printed product of the placing panel 13 is in rolling contact with the printing head of the four-color printing machine 1, realizing the printing of the to-be-printed product, in this process, when the connecting seat 11 of the conveyor belt 3 is in contact with the limiting strip 8 on the left side or the right side in the printing box 2, the pressure sensor 9 on the limiting strip 8 feeds back to the controller 7 after detecting the vertical pressure, and the controller 7 cuts off the power supply of the driving device of the conveyor belt 3 through the relay, achieving the effect of automatic stopping, preventing the printing frame 5 from colliding with the printing box 2.

[0030] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A centering device for four-color printing, comprising a four-color printing machine (1) and a printing tank (2) below it, characterized in that: Below the four-color printing press (1) is a printing box (2), and the printing head of the four-color printing press (1) extends to the inside of the printing box (2). A conveyor belt (3) is horizontally installed inside the printing box (2), and one of the drive rollers in the conveyor belt (3) is fixedly connected to the output end of an external motor through a coupling. Two belt guides (4) are arranged parallel above the conveyor belt (3), and both belt guides (4) are welded to the inner wall of the printing box (2). A printing frame (5) is set between the two belt guides (4). Guide wheels (17) that are tumblingly connected to the belt guides (4) are installed on both the left and right sides of the printing frame (5), and two sliding rods (14) are welded to the inside of the printing frame (5). (5) Two sliding rods (14) are fitted with placement panels (13), and friction surfaces (15) are provided on the side of the placement panel (13) and the inner wall of the printing frame (5). A connecting seat (11) is fixed on the conveyor belt (3) by screws, and a connecting groove (18) is opened on the top surface of the connecting seat (11). A connecting block (10) is welded to the bottom of the printing frame (5), and the connecting block (10) is inserted into the connecting groove (18) of the connecting seat (11). A bolt (12) connected to the connecting block (10) is inserted through the side of the printing frame (5). A controller (7) is installed on the right side of the top surface of the printing box (2), and the output end of the controller (7) is electrically connected to the external motor of the conveyor belt (3).

2. A centering device for four-color printing according to claim 1, characterized in that: The printing box (2) has two limiting strips (8) welded inside, and both limiting strips (8) are above the conveyor belt (3). Pressure sensors (9) are embedded in the opposing surfaces of the two limiting strips (8), and the pressure sensors (9) are electrically connected to the controller (7).

3. A centering device for four-color printing according to claim 1, characterized in that: One side of the printing frame (5) is threaded with several plum blossom knobs (16), and one end of two of the plum blossom knobs (16) abuts against the side of the placement panel (13).

4. A centering device for four-color printing according to claim 1, wherein: Both ends of the printing box (2) are provided with rectangular material inlets (6) corresponding to the printing frame (5), and the size of the material inlets (6) is greater than the width of the printing frame (5).

5. A centering device for four-color printing according to claim 1, wherein: The surface of the placement panel (13) has two vacuum suction cup mounting holes.

6. A centering device for four-color printing according to claim 1, wherein: The cross-section of the belt guide (4) is U-shaped, and the dimensions of the inner space of the belt guide (4) are adapted to the dimensions of the guide wheel (17).

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