Printing device capable of rapidly switching colors

Abstract

The utility model provides a printing device capable of rapidly switching colors. The printing device comprises a support, a conveying belt is arranged in the support, a positioning frame is arranged on the outer side of the support, the positioning frame is nested on the outer side of the support, and a plurality of printing sets are arranged at the upper end of the positioning frame. According to the printing device capable of rapidly switching the colors, the supporting frame and other structures are arranged, a positioning frame provides stable supporting and accurate positioning for a printing set, it is ensured that a printing plate makes accurate contact with an object, a groove design ensures that a conveying pipe is stable and printing ink does not leak, the reliability of the device is improved, and the service life of the device is prolonged; the device adapts to movement of the printing plate, maintains stable ink conveying, is high in fatigue resistance, reduces the maintenance cost, is more convenient to install and debug, accurately regulates and controls the pressure of the printing plate through the air cylinder, adapts to articles made of different materials, can quickly drive the printing plate to act, shortens the color switching time, and meets the double requirements of the printing industry for speed and quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing technical field more specifically, relate to a printing device of color can quick switching. BACKGROUND

[0002] Printing is the process technology that uses printing plate or other ways to transfer the information of graphics and text on the original to the printing material, printing realizes the duplication of graphics and text through plate making, ink application, pressure and other processes, and the printing device is a mechanical device that transfers the ink of graphics and text on the printing plate to paper or other printing materials, which realizes the duplication of graphics and text by uniformly applying ink on the printing plate and transferring the ink to the printing material under the action of pressure.

[0003] The traditional printing device is more cumbersome and time-consuming in color switching process, and it often takes a long time to stop one ink supply and start another ink supply when switching different color inks, which causes waste of time and low printing efficiency, and it is difficult to meet the demand of multi-color printing rapid production.

[0004] The utility model discloses a printing device that is more flexible and convenient to use. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the technical problem in the above background art, and provides a printing device with color switching.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a printing device with color switching, comprising: a support, the support is internally provided with a conveying belt, the support is externally provided with a positioning frame, the positioning frame is nested on the outside of the support, the upper end of the positioning frame is provided with a plurality of printing groups;

[0007] The printing group comprises an ink cartridge, a conduit, a conveying pipe, a positioning pipe and a printing plate, the ink cartridge is installed on the upper end of the positioning frame, one end of the conduit is connected with the conveying pipe, the other end of the conveying pipe is connected with the positioning pipe, the other end of the positioning pipe is connected with the printing plate, and an electromagnetic valve is arranged at the outlet of the conveying pipe.

[0008] Further preferred scheme: a plurality of grooves are formed in the upper end of the positioning frame, a through hole is formed in the bottom of the groove, one end of the conveying pipe is embedded in the groove, and the conduit is embedded in the through hole and the conveying pipe at the same time.

[0009] Further preferred scheme: a sealing piece is embedded in the through hole, the sealing piece is inclined, the outer side of the conduit is inclined inward, and a positioning sensor is embedded on the surface of the sealing piece.

[0010] Further preferred: the positioning frame is internally provided with a positioning box, the positioning pipe and the printing plate are embedded in the inside of the positioning box, and one end of the conveying pipe can penetrate the upper end of the positioning box and be connected with the positioning pipe.

[0011] Further preferred: the bottom of the positioning box is provided with a limiting groove, the printing plate can be embedded in the limiting groove, and the printing plate and the limiting groove are movably connected, and the number of limiting grooves is consistent with the number of printing groups.

[0012] Further preferred: two air cylinders are installed on the upper end of the printing plate, the other end of the air cylinder is installed on the inner wall of the positioning box, and the conveying pipe is a corrugated pipe.

[0013] Beneficial effects:

[0014] 1. By setting the positioning frame, the positioning frame provides stable support and precise installation and positioning basis for the entire printing group, which is nested on the outside of the support, ensuring the relative position of the printing group and the conveying belt is fixed, so that the printing plate can accurately contact the printed object every time, greatly improving the accuracy and repeatability of printing, the recesses on the upper end of the positioning frame are very ingenious in cooperation with the installation of the conveying pipe, the recesses not only provide precise positioning for the conveying pipe, making the installation convenient and fast, but also effectively prevent the conveying pipe from shaking or shifting during ink conveying, ensuring that the ink flows stably to the printing plate, at the same time, the recesses, the guide pipe and the through hole are designed in cooperation, and the sealing piece enhances the sealing of the connection, preventing ink leakage, which not only saves ink cost, but also avoids pollution caused by leakage to the inside of the device, ensuring the cleanliness and normal operation of the device, and further improving the reliability and service life of the entire printing device.

[0015] 2. By setting the corrugated pipe, its good elasticity and flexibility perfectly adapt to the up and down movement of the printing plate driven by the air cylinder, during the movement of the printing plate, the corrugated pipe can freely stretch and contract, and will not hinder the normal conveying of the ink due to stretching or bending, always maintaining the stability and continuity of the ink conveying, effectively avoiding the poor supply of ink caused by pipe deformation, ensuring the smooth progress of the printing process, at the same time, compared with ordinary rigid conveying pipe, the corrugated pipe has better fatigue resistance, reducing the damage risk caused by frequent stretching and contraction, greatly prolonging the service life of the conveying pipe and reducing the equipment maintenance cost, and its flexibility makes the connection and arrangement of the conveying pipe more convenient and flexible during the installation and debugging of the device, which can better adapt to the complex internal structure of the device, improving the operability and practicality of the entire printing device.

[0016] 3. By setting the air cylinder, the air cylinder as the direct driving force of the printing plate movement plays an indispensable role in the printing process, through the precise control of the control system to the air cylinder, the contact pressure between the printing plate and the printed object can be flexibly adjusted, for different materials and thickness of the printed object, the pressure can be accurately adjusted according to the actual demand, for example, when printing thin paper, reduce the air cylinder thrust, avoid the paper being crushed, and when printing thick paper, increase the air cylinder thrust, ensure that the ink is fully transferred, this accurate pressure control not only ensures the printing quality, but also expands the application range of the printing device, at the same time, the air cylinder can realize the quick extension and contraction action, when the color is switched, the printing plate is quickly lifted or lowered, the switching time is greatly shortened, the printing efficiency is improved, the whole printing process is more smooth and efficient, meet the double requirements of speed and quality of modern printing industry;

[0017] 4. As described above, the printing device with quick color switching function is provided with a support frame and the like, the positioning frame provides stable support and accurate positioning for the printing group, ensures the accurate contact between the printing plate and the object, the groove design guarantees the stability of the conveying pipe and the ink leakage, improves the reliability and service life of the device, the bellows has good extension and flexibility, adapts to the movement of the printing plate, maintains the stability of ink conveying, has strong fatigue resistance, reduces the maintenance cost, and is more convenient to install and debug, the air cylinder accurately controls the pressure of the printing plate, adapts to different materials, and can quickly drive the printing plate to act, shorten the color switching time, meet the double requirements of speed and quality of the printing industry. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model.

[0019] Figure 2 It is a positioning frame internal structure schematic view of the utility model.

[0020] Figure 3 It is a through hole internal structure schematic view of the utility model.

[0021] Figure 4 It is a limiting groove structure schematic view of the utility model.

[0022] Figure 5 It is the A place enlarged structure schematic view of the utility model. Figure 1

[0023] Figures 1-5 In the middle: 1, support; 2, conveying belt; 3, positioning frame; 301, groove; 302, through hole; 303, sealing piece; 304, positioning box; 305, limiting groove; 4, printing group; 401, ink cartridge; 402, guide pipe; 403, conveying pipe; 404, positioning pipe; 405, printing plate; 406, air cylinder. DETAILED DESCRIPTION​

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. Figures 1-5 The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application.

[0025] Please refer to Figures 1-5 In the embodiments of the present application, the printing device with color switching quickly comprises a support 1, a conveying belt 2 arranged inside the support 1, a positioning frame 3 arranged outside the support 1, the positioning frame 3 being nested outside the support 1, and a plurality of printing groups 4 arranged on the upper end of the positioning frame 3. The printing group 4 comprises an ink box 401, a conduit 402, a conveying pipe 403, a positioning pipe 404 and a printing plate 405, the ink box 401 being mounted on the upper end of the positioning frame 3, one end of the conduit 402 being connected with the conveying pipe 403, the other end of the conveying pipe 403 being connected with the positioning pipe 404, the other end of the positioning pipe 404 being connected with the printing plate 405, and an electromagnetic valve being arranged at the outlet of the conveying pipe 403.

[0026] First, the object to be printed is placed on the conveyor belt 2, which is driven by the drive device inside the support 1, can move at a set speed and direction, and according to the printing requirements, different color inks are injected into the ink box 401 respectively, when printing is needed, the electromagnetic valve of the corresponding printing group 4 is opened by the control system, the ink in the ink box 401 flows into the delivery pipe 403 under the action of gravity or pressure (such as the pressurizing device inside the ink box 401, etc.), due to the opening of the electromagnetic valve at the outlet of the delivery pipe 403, the ink can enter the positioning pipe 404 along the delivery pipe 403, and finally reach the printing plate 405, which is in contact with the object to be printed. Under the action of the conveyor belt 2, the object to be printed moves, so as to realize the transfer and printing of the ink, when the color needs to be switched, the currently opened electromagnetic valve is closed, the delivery of the ink of this color is stopped, and then the electromagnetic valve of another printing group 4 containing ink of a different color is opened, so that the ink of the corresponding color is delivered and printed according to the above path, so as to realize rapid color switching printing. In the whole printing process, the conveyor belt 2 continues to run, continuously conveying the object to be printed under the printing group 4, and each printing group 4 delivers and prints the ink according to the instruction, until the whole printing task is completed. By setting the electromagnetic valve to control the delivery of the ink, the supply of different color inks can be quickly opened and closed, the color switching is realized quickly, the printing efficiency is greatly improved, the time waste caused by color switching is reduced, the demand for rapid production of multi-color printing is met, the positioning frame 3 is nested outside the support 1, which can accurately position the printing group 4, ensure the relative position accuracy of the printing plate 405 and the object to be printed, so as to ensure the position accuracy of the printed pattern and text, improve the printing quality, and the layout of each part of the printing device such as the ink box 401, the conduit 402, the delivery pipe 403, the positioning pipe 404 and the printing plate 405 is reasonable. The ink box 401 is installed on the upper end of the positioning frame 3, the gravity is used to assist the delivery of the ink, the demand for additional power device is reduced, the overall structure is compact, the occupied space is small, and the installation and maintenance are convenient. A plurality of printing groups 4 are arranged on the positioning frame 3, the user can flexibly increase or reduce the number of printing groups 4 according to the actual printing requirements, so as to adapt to different printing tasks such as multi-color overprint and single-color printing, and have strong expansibility and adaptability. The device can accurately control the electromagnetic valve and other parts through the control system, realize automatic color switching and printing process, reduce manual intervention, reduce labor intensity, and improve the stability and consistency of printing. The electromagnetic valve can accurately control the delivery amount of the ink, avoid waste of the ink, improve the utilization rate of the ink, and reduce the printing cost.

[0027] The utility model discloses a positioning frame 3 upper end is provided with a plurality of recess 301, and recess 301 inside bottom end is provided with through -hole 302, and the one end of conveying pipe 403 is embedded recess 301 inside, and the conduit 402 is embedded through -hole 302 inside at the same time and embeds conveying pipe 403 inside, and the through -hole 302 inside is embedded and is provided with sealing sheet 303, and sealing sheet 303 is inclined and is set, and the outside of conduit 402 is inclined to the inside, and the surface of sealing sheet 303 is embedded and is provided with the position sensor,

[0028] In the preparation stage, one end of the delivery pipe 403 is embedded in the groove 301 at the upper end of the positioning frame 3, and the guide pipe 402 is embedded in the delivery pipe 403 while being embedded in the through hole 302. Due to the inclined arrangement of the sealing sheet 303 and the inwardly inclined outer side of the guide pipe 402, the guide pipe 402 and the sealing sheet 303 are tightly fitted to form a relatively sealed connection. The positioning sensor is embedded on the surface of the sealing sheet 303 to detect the installation condition and position information of the ink cartridge 401. When the ink cartridge 401 is installed at the upper end of the positioning frame 3 and connected with the guide pipe 402, the positioning sensor can sense the presence and accurate position of the ink cartridge 401 and feed back the information to the control system. When the control system receives a printing instruction and the ink cartridge 401 is positioned correctly, the electromagnetic valve at the outlet of the delivery pipe 403 of the corresponding printing group 4 is opened. The ink in the ink cartridge 401 flows into the delivery pipe 403 under the action of gravity or other pressure. Due to the tight fit of the sealing sheet 303 and the guide pipe 402, the ink can smoothly flow into the delivery pipe 403 along the guide pipe 402 without leakage. The ink continues to flow along the delivery pipe 403 through the positioning pipe 404 and finally reaches the printing plate 405, realizing the printing operation on the objects to be printed placed on the conveying belt 2. When color switching is needed, the currently opened electromagnetic valve is closed to stop ink delivery. The positioning sensor monitors the state of the ink cartridge 401 in real time to ensure that the ink cartridge 401 does not move or have other abnormal conditions. Then, the electromagnetic valve of another printing group 4 containing ink of a different color is opened, and the above-mentioned ink delivery and printing process is repeated to realize rapid color switching printing. During the entire process, the conveying belt 2 continues to operate to drive the objects to be printed to pass under each printing group 4 to complete printing. The inclined arrangement of the sealing sheet 303 and the inwardly inclined outer side of the guide pipe 402 can effectively enhance the sealing between the guide pipe 402 and the positioning frame 3, prevent ink leakage during delivery, ensure the stability and accuracy of ink delivery, avoid ink waste and contamination of other parts of the printing device, and help maintain the normal operation of the printing device and prolong its service life. The positioning sensor can accurately detect the installation state and position information of the ink cartridge 401 in real time. Only when the ink cartridge 401 is correctly installed and detected by the sensor, the printing device will perform ink delivery and printing operation, avoiding printing quality problems or equipment failure caused by improper installation of the ink cartridge 401, improving the reliability and stability of the printing process. The groove 301 and the through hole 302 on the positioning frame 3 are designed to facilitate the installation of the delivery pipe 403 and the guide pipe 402. The connection can be completed by simple embedding operation. At the same time, this modular installation method also facilitates the disassembly and replacement of parts when needed, reducing the difficulty and cost of equipment maintenance. The stable ink delivery system (benefiting from good sealing and accurate positioning of the ink cartridge 401) can ensure the consistency of ink supply and delivery path during each printing.Therefore, the printing precision and quality are improved, the printed patterns and characters are clearer and more accurate, higher printing process requirements are met, through the monitoring of the positioning sensor and the protection of the sealing structure, the printing device can discover problems such as abnormal installation of the ink box 401 and ink leakage in time and take corresponding measures to process, the reliability and stability of the whole printing system are enhanced, the downtime caused by equipment failure is reduced, and the production efficiency is improved.

[0029] In the embodiment of the utility model, the positioning frame 3 is internally provided with a positioning box 304, the positioning pipe 404 and the printing plate 405 are embedded in the inside of the positioning box 304, and one end of the conveying pipe 403 can penetrate the upper end of the positioning box 304 and be connected with the positioning pipe 404; the bottom of the positioning box 304 is provided with a limiting groove 305, the printing plate 405 can be embedded in the inside of the limiting groove 305, and the printing plate 405 and the limiting groove 305 are movably connected, the number of the limiting groove 305 is consistent with the number of the printing group 4; two air cylinders 406 are installed on the upper end of the printing plate 405, the other end of the air cylinder 406 is installed on the inner wall of the positioning box 304, and the conveying pipe 403 is a corrugated pipe;

[0030] The to-be-printed article is placed on the conveying belt 2, the conveying belt 2 starts to run, the article is moved to the printing area, the ink box 401 is installed at the upper end of the positioning frame 3, the ink flows into the delivery pipe 403 (a corrugated pipe) through the conduit 402, at this time, the printing plate 405 of each printing group 4 is in the initial position under the action of the air cylinder 406, that is, the printing plate 405 is embedded in the limiting groove 305 at the bottom of the positioning box 304, but does not contact the to-be-printed article, when the to-be-printed article reaches the designated printing position, the control system opens the electromagnetic valve at the outlet of the delivery pipe 403 of the corresponding printing group 4 according to the printing requirement, the ink flows from the delivery pipe 403 to the printing plate 405 through the positioning pipe 404, then the control system controls the two air cylinders 406 of the printing group 4 to work, the air cylinder 406 pushes the printing plate 405 to move downward along the limiting groove 305, so that the printing plate 405 contacts the surface of the to-be-printed article and applies a certain pressure, and printing is performed, in the printing process, the conveying belt 2 continuously and slowly moves to ensure the continuity of the printed pattern or text, after the printing of one color is completed, the air cylinder 406 retracts, drives the printing plate 405 to move upward along the limiting groove 305, and returns to the initial position, at the same time, the electromagnetic valve at the outlet of the delivery pipe 403 of the printing group 4 is closed, and the supply of ink is stopped, then the electromagnetic valve of the next required printing group 4 is opened, and the above-mentioned ink delivery and the process of the air cylinder 406 pushing the printing plate 405 to print are repeated, so that the color is quickly switched and printed, since the delivery pipe 403 is a corrugated pipe, when the air cylinder 406 drives the printing plate 405 to move upward and downward, the corrugated pipe can be deformed to a certain extent, so as to adapt to the change of the position of the printing plate 405, and ensure the normal delivery of the ink, the above-mentioned steps are repeated until the printing of all colors and patterns is completed, the to-be-printed article continues to be sent out of the printing device by the conveying belt 2, the positioning box 304 and the limiting groove 305 can accurately position the printing plate 405, so as to ensure that the relative position of the printing plate 405 and the to-be-printed article is accurate when printing, thereby improving the printing precision and quality, and the position of the printed pattern and text is more accurate and the edge is more clear, the upward and downward movement of the printing plate 405 is controlled by the air cylinder 406, so that the pressure between the printing plate 405 and the to-be-printed article can be accurately adjusted, which can ensure that the ink is fully transferred to the article, and can also avoid that the pressure is too large to damage the article, which is suitable for to-be-printed articles of different materials and thicknesses, and improves the adaptability of the printing device, each printing group 4 is independently arranged, the printing plate 405 can quickly move upward and downward through the air cylinder 406, and the electromagnetic valve controls the delivery of the ink, so that the color can be quickly switched and printed, which greatly improves the printing efficiency and meets the rapid production requirement of multi-color printing, the delivery pipe 403 adopts a corrugated pipe, which has good stretchability and flexibility, and can freely stretch and contract during the upward and downward movement of the printing plate 405 with the air cylinder 406, so as not to affect the delivery of the ink, to ensure the stability and continuity of the delivery of the ink, and to reduce the damage risk caused by excessive stretching or bending of the pipe, thereby prolonging the service life of the delivery pipe 403,The positioning box 304 is arranged in the positioning frame 3, and components such as the positioning pipe 404 and the printing plate 405 are integrated in the positioning box 304, so that the whole printing device is compact in structure and small in space occupation, and the structures of the printing groups 4 are similar and have the modularization feature, so that installation, debugging and maintenance are facilitated; if a printing group 4 fails, the printing group 4 can be individually repaired or replaced, without affecting the normal work of other printing groups 4; through the automatic control of the air cylinder 406 and the electromagnetic valve, automatic operation of the printing process is realized, manual intervention is reduced, and production efficiency is improved; meanwhile, fast color switching and accurate printing positioning further shorten the printing time and improve the overall production capacity.

[0031] Working principle: in the preparation stage, the object to be printed is placed on the conveying belt 2, the ink box 401 is installed at the upper end of the positioning frame 3, different color inks are injected according to the printing requirement, one end of the conveying pipe 403 is embedded in the groove 301 of the positioning frame 3, the guide pipe 402 is embedded in the conveying pipe 403 through the through hole 302, the inclined sealing piece 303 is tightly attached to the inwardly inclined guide pipe 402, the positioning sensor monitors the state of the ink box 401 in real time, the conveying belt 2 is driven by the driving device in the support 1 and moves at a set speed and direction, so as to convey the object to the printing area; when the object reaches the specified position, the control system opens the electromagnetic valve of the conveying pipe 403 outlet of the corresponding printing group 4 according to the printing instruction, the ink flows to the printing plate 405 through the guide pipe 402, the conveying pipe 403 and the positioning pipe 404 under the action of gravity or pressure, the limiting groove 305 at the bottom of the positioning box 304 in the positioning frame 3 accurately positions the printing plate 405, during printing, the two air cylinders 406 of the printing group 4 push the printing plate 405 to move downward along the limiting groove 305, so as to contact and press the surface of the object and complete printing; during this period, the conveying belt 2 continuously slows down to ensure the continuity of the pattern, after one-color printing is completed, the air cylinder 406 is retracted to drive the printing plate 405 to move upward and reset, at the same time, the electromagnetic valve of this group is closed to stop ink supply, the electromagnetic valve of the next group is opened to repeat the operation, so as to realize fast color switching; because the conveying pipe 403 is a corrugated pipe, it can stretch and deform with the upward and downward movement of the printing plate 405, so as to ensure normal ink conveying; during the whole process, the positioning box 304 and the limiting groove 305 ensure accurate positioning of the printing plate 405 and improve printing precision; the air cylinder 406 can accurately adjust the printing pressure and adapt to different objects; the printing groups 4 are independent and cooperate with the electromagnetic valve and the air cylinder 406 to realize efficient printing; the device structure is compact and modular, so that installation and maintenance are facilitated; automatic control reduces manual intervention and greatly improves production efficiency.

Claims

1. A printing apparatus with rapidly switchable colors, comprising: The bracket (1) is characterized in that: a conveyor belt (2) is provided inside the bracket (1), a positioning frame (3) is provided on the outside of the bracket (1), the positioning frame (3) is nested on the outside of the bracket (1), and a plurality of printing groups (4) are provided on the upper end of the positioning frame (3); The printing assembly (4) includes an ink cartridge (401), a conduit (402), a delivery pipe (403), a positioning pipe (404), and a printing plate (405). The ink cartridge (401) is installed on the upper end of the positioning frame (3). One end of the conduit (402) is connected to the delivery pipe (403), the other end of the delivery pipe (403) is connected to the positioning pipe (404), and the other end of the positioning pipe (404) is connected to the printing plate (405). An electromagnetic valve is provided at the outlet of the delivery pipe (403).

2. The printing apparatus with rapidly switchable colors according to claim 1, characterized in that: The positioning frame (3) has several grooves (301) on its upper end. A through hole (302) is opened through the bottom of the groove (301). One end of the conveying pipe (403) is embedded in the groove (301), and the conduit (402) is embedded in the through hole (302) and simultaneously embedded in the conveying pipe (403).

3. The printing apparatus with rapidly switchable colors according to claim 2, characterized in that: A sealing sheet (303) is embedded inside the through hole (302). The sealing sheet (303) is inclined. The outer side of the conduit (402) is inclined inward. A positioning sensor is embedded on the surface of the sealing sheet (303).

4. The printing apparatus with rapidly switchable colors according to claim 1, characterized in that: The positioning frame (3) is provided with a positioning box (304) inside. The positioning tube (404) and the printing plate (405) are both embedded inside the positioning box (304), and one end of the conveying tube (403) can pass through the upper end of the positioning box (304) and connect to the positioning tube (404).

5. A printing apparatus with rapidly switchable colors according to claim 4, characterized in that: The bottom of each positioning box (304) has a limiting groove (305) through it. The printing plate (405) can be embedded in the limiting groove (305), and the printing plate (405) and the limiting groove (305) are movably connected. The number of limiting grooves (305) is the same as the number of printing groups (4).

6. A printing apparatus with rapidly switchable colors according to claim 5, characterized in that: Two cylinders (406) are installed on the upper end of the printing plate (405), and the other end of the cylinder (406) is installed on the upper end of the inner wall of the positioning box (304). The conveying pipe (403) is a corrugated pipe.

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