Satellite type flexographic printing machine water cooling mechanism

Abstract

The utility model discloses a satellite type flexographic printing machine water cooling mechanism which comprises a machine frame and a cooling roller rotationally arranged on the machine frame, the interior of the cooling roller is hollow to form an air cooling cavity, and the two ends of the cooling roller are provided with an air inlet and an air outlet which are communicated with the air cooling cavity respectively. A water cooling tank is arranged below the cooling roller, one part of the cooling roller is located in the water cooling tank, a water inlet and a water outlet are formed in the water cooling tank, and a contact area is formed in the position, making contact with the printing stock, of the peripheral face of the cooling roller. A water scraping assembly making contact with the peripheral face of the cooling roller is arranged on the outer side of the cooling roller corresponding to the front portion, opposite to the rotating direction of the cooling roller, of the contact area, and a water blowing assembly is arranged behind the water scraping assembly in the rotating direction of the cooling roller. The utility model has the following advantages and effects: the processing is simple and convenient, the production cost is low, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to a printing device, in particular to a water cooling mechanism of a satellite type flexographic printing machine. Background Art

[0002] Flexographic printing presses use highly fluid inks, which are transferred to the image and text of the printing plate through the ink fountain rubber roller and the anilox roller, and then the printing pressure is applied by the pressure roller to transfer the ink on the printing plate to the substrate, and finally the printing process is completed after drying; this includes satellite flexographic printing presses. In the global printing industry, satellite flexographic printing presses are the fastest growing printing machines in the past decade. Currently, they occupy a major position in the packaging market in Europe and the United States with their advantages of high speed, environmental protection, and high efficiency.

[0003] Most existing flexographic printing machines use self-overflowing cooling rollers, which still have many shortcomings in practical use. For example, the self-overflowing cooling roller is heavy, and its structure with one end heavy and the other end light will greatly affect the tension of the material. The self-overflowing cooling roller originally used a spiral joint for water inlet and outlet, which caused the cooling roller to have a large resistance and consumed more electricity to rotate. In addition, the cooling structure of the self-overflowing cooling roller is set inside the cooling roller, which makes its processing complicated and the production cost high. Based on the above problems, the present invention was born. Utility Model Content

[0004] The utility model aims to provide a water cooling mechanism for a satellite type flexographic printing machine, which has the advantages of simple processing, low production cost and wider application range.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a water cooling mechanism of a satellite flexographic printing machine, comprising a frame and a cooling roller rotatably arranged on the frame, the interior of the cooling roller is hollow to form an air cooling chamber, and both ends of the cooling roller are respectively provided with an air inlet and an air outlet connected to the air cooling chamber, a water cooling groove is provided below the cooling roller and a part of the cooling roller is located in the water cooling groove, a water inlet and a water outlet are provided on the water cooling groove, a contact area is formed at the position where the outer peripheral surface of the cooling roller contacts the substrate, a wiper assembly in contact with the outer peripheral surface of the cooling roller is provided in front of the outer side of the cooling roller corresponding to the contact area and facing away from the rotation direction of the cooling roller, and a water blowing assembly is provided behind the wiper assembly along the rotation direction of the cooling roller.

[0006] By adopting the above technical solution, the substrate is transmitted and contacts the contact area of ​​the cooling roller to drive the cooling roller to rotate. The cooling roller rotates and contacts the cooling water flow in the water cooling tank to achieve heat exchange to reduce the temperature of the cooling roller. Then, the cooling position successively rotates the wiper assembly and the water blowing assembly to scrape off the water stains on the outer peripheral surface of the cooling roller and then enters the contact area with the substrate to form heat exchange with the substrate, taking away the heat on the substrate to achieve the purpose of heat exchange. Ventilation is carried out toward the air cooling chamber through the air inlet to further take away the heat on the cooling roller, achieving better cooling and heat exchange purposes. This structure combines air cooling and water cooling, can achieve better cooling purposes, is simple to process, has low production costs and a wider range of applications.

[0007] It is further configured as follows: the wiper assembly includes a wiper bracket installed on a frame and a plurality of elastic scraper strips arranged on the wiper bracket, the plurality of elastic scraper strips extend axially along the cooling roller and are arranged at intervals along the rotation direction of the cooling roller, one side of each elastic scraper strip is in contact with the outer peripheral surface of the cooling roller, and each of the elastic scraper strips is detachably and fixedly connected to the wiper bracket.

[0008] By adopting the above technical solution, multiple elastic scraping strips contact the outer wall of the cooling roller to scrape off water stains adhering to the outer wall of the cooling roller, thereby achieving the cleaning purpose; and the elastic scraping strips can be disassembled, assembled and replaced by a detachable fixed connection, which has a better practical effect.

[0009] It is further configured to include an insert strip formed on each elastic scraper strip and a slot formed on the wiper bracket for the insert strip to be inserted into, the slot extending along the axial direction of the cooling roller to form a long strip, and an adjustment component for adjusting the distance between the elastic scraper strip and the outer peripheral wall of the cooling roller is provided between the wiper bracket and the frame.

[0010] By adopting the above technical scheme, the slot cooperates with the insert strip to realize the detachable installation between the elastic scraper strip and the wiper bracket, and the pressing force of the elastic scraper strip against the outer wall of the cooling roller is adjusted by the set adjustment component, so as to avoid excessive deformation or wear of the elastic scraper strip while ensuring the best scraping effect, thereby extending the service life of the elastic scraper strip.

[0011] It is further configured as follows: the adjustment assembly includes two adjustment bolts, the wiper bracket is slidably arranged on the frame and reciprocates toward one side of the cooling roller, the two adjustment bolts are respectively arranged at both ends of the wiper bracket, each of the adjustment bolts passes through the frame and is threadedly connected to the frame, and one end that passes through is rotatably connected to the wiper bracket to form an axial linkage.

[0012] By adopting the above technical solution, the adjustment bolt is rotated to control the movement of the wiper bracket so as to adjust the distance between the elastic scraper strip and the outer peripheral wall of the cooling roller.

[0013] It is further configured as follows: the water blowing assembly includes a water blowing knife frame with an air inlet cavity and an air outlet gap arranged on the water blowing knife frame and connecting the air inlet cavity with the outside world, and the air outlet of the air outlet gap faces the outer peripheral wall of the cooling roller and extends along the axial direction of the cooling roller to form a long strip.

[0014] By adopting the above technical solution, high-pressure gas is introduced into the air inlet cavity so that it is ejected from the air outlet gap and then acts on the outer wall of the cooling roller to blow away the water stains that are not wiped clean by the wiper assembly. While achieving secondary cleaning, the ejected gas can also have a certain cooling effect on the cooling roller.

[0015] The further configuration is as follows: the frame is rotatably provided with a rotating shaft and a motor for driving the rotating shaft to rotate at a position between the water blowing assembly and the contact area; a swing plate is hingedly provided on the outer peripheral wall of the rotating shaft and a plurality of swing plates are distributed around the outer peripheral wall of the rotating shaft; a water absorption layer is provided on one side of each swing plate and an elastic member for positioning the swing plate is provided between each swing plate and the rotating shaft; the motor drives the rotating shaft to rotate so that the water absorption layer on each swing plate can be pressed against the outer peripheral wall of the cooling roller one by one.

[0016] By adopting the above technical scheme, the motor drives the rotating shaft to drive the swing plate to rotate so that the water absorption layer on one of the swing plates is pressed against the outer wall of the cooling roller to further absorb water. Due to the positioning elastic part, after the water absorption layer on the swing plate is full of water, the rotating shaft can drive the swing plate to pass over the cooling roller so that the water absorption layer on the next swing plate contacts the cooling roller, and the swing plate can be recycled. The practical life is longer and the replacement time is reduced. The elastic part can cooperate with the rotation angle of the rotating shaft to apply a pressing force to the water absorption layer against the outer wall of the cooling roller to ensure the effectiveness of water absorption.

[0017] It is further configured as follows: a plurality of heat dissipation fins are distributed on the outer bottom of the water cooling tank.

[0018] By adopting the above technical solution, the presence of the heat dissipation fins can further reduce the temperature of the water cooling tank, making it have a better cooling effect.

[0019] In summary, the utility model has the following beneficial effects: the utility model is easy to process, has low production cost and has a wider scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 It is a partial structural schematic diagram of an embodiment;

[0022] Figure 3 is a cross-sectional view of an embodiment;

[0023] Figure 4 is a cross-sectional view of the embodiment in another direction;

[0024] Figure 5 for Figure 4 Enlarged view of part A in the middle;

[0025] Figure 6 It is a partial cross-sectional view of an embodiment.

[0026] In the figure: 1. frame; 2. cooling roller; 3. air cooling chamber; 4. air inlet; 5. air outlet; 6. water cooling trough; 7. water inlet; 8. water outlet; 9. contact area; 10. wiper assembly; 101. wiper bracket; 102. elastic scraper; 11. water blowing assembly; 111. air inlet chamber; 112. air outlet gap; 113. water blowing knife holder; 12. insert strip; 13. slot; 14. rotating shaft; 15. motor; 16. swing plate; 17. water absorption layer; 18. heat dissipation fin; 19. adjusting bolt. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] refer to Figures 1 to 6 A water cooling mechanism of a satellite flexographic printing machine includes a frame 1 and a cooling roller 2 rotatably arranged on the frame 1. The cooling roller 2 is hollow inside to form an air cooling chamber 3, and an air inlet 4 and an air outlet 5 connected to the air cooling chamber 3 are respectively provided at both ends of the cooling roller 2. A water cooling groove 6 is provided below the cooling roller 2, and a part of the cooling roller 2 is located in the cooling water of the water cooling groove 6. The water cooling groove 6 is fixedly installed on the frame 1, and a water inlet 7 and a water outlet 8 are provided on the water cooling groove 6. A contact area 9 is formed at the contact position between the outer peripheral surface of the cooling roller 2 and the substrate. A wiper assembly 10 in contact with the outer peripheral surface of the cooling roller 2 is provided on the outer side of the cooling roller 2 corresponding to the contact area 9 in front of the rotation direction of the cooling roller 2. A water blowing assembly 11 is provided behind the wiper assembly 10 along the rotation direction of the cooling roller 2. The water blowing assembly 11 is located in front of the contact area 9.

[0029] The wiper assembly 10 includes a wiper bracket 101 slidably mounted on the frame 1 and a plurality of elastic scraper strips 102 arranged on the wiper bracket 101. The plurality of elastic scraper strips 102 extend along the axial direction of the cooling roller 2 and are arranged at intervals along the rotation direction of the cooling roller 2. One side of each elastic scraper strip 102 contacts the outer peripheral surface of the cooling roller 2. Each elastic scraper strip 102 and the wiper bracket 101 can be detachably fixedly connected. An insertion strip 12 is integrally formed on each elastic scraper strip 102, and a slot 13 for the insertion strip 12 is formed on the wiper bracket 101. The slot 13 extends along the axial direction of the cooling roller 2 to form a long strip. The frame 1 is provided with an operating hole at a position corresponding to the end face of the slot 13. The wiper bracket 101 reciprocates toward one side of the cooling roller 2 and an adjustment component for adjusting the distance between the elastic scraper strip 102 and the outer peripheral wall of the cooling roller 2 is provided between the wiper bracket 101 and the frame 1.

[0030] The adjustment assembly is two adjustment bolts 19, which are respectively arranged at both ends of the wiper bracket 101. The wiper bracket 101 is fixedly installed on the frame 1. Each adjustment bolt 19 passes through the frame 1 and is threadedly connected thereto. One end passing through is rotatably connected to the wiper bracket 101 and forms an axial linkage. The water blowing assembly 11 includes a water blowing knife frame 113 having an air inlet cavity 111 and an air outlet gap 112 opened in the water blowing knife frame 113 and connecting the air inlet cavity 111 with the outside. The air outlet of the air outlet gap 112 faces the outer peripheral wall of the cooling roller 2 and extends along the axial direction of the cooling roller 2 to form a long strip.

[0031] The frame 1 is rotatably provided with a rotating shaft 14 and a motor 15 for driving the rotating shaft 14 to rotate at a position between the water blowing assembly 11 and the contact area 9. The motor 15 is fixedly installed on the frame 1 and the output shaft is fixedly connected to the rotating shaft 14. The outer peripheral wall of the rotating shaft 14 is hinged with a swing plate 16 through the main shaft, and the swing plates 16 are distributed around the outer peripheral wall of the rotating shaft 14. A water absorbing layer 17 is provided on one side of each swing plate 16, and an elastic member for positioning the position of the swing plate 16 is provided between each swing plate 16 and the rotating shaft 14. The elastic member is a torsion spring that is sleeved on the main shaft and fixedly connected to the swing plate 16 at one end and fixedly connected to the rotating shaft 14 at the other end. The motor 15 drives the rotating shaft 14 to rotate so that the water absorbing layer 17 on each swing plate 16 can be against the outer peripheral wall of the cooling roller 2 one by one. A plurality of heat dissipation fins 18 are fixedly distributed on the outer bottom of the water cooling tank 6. The elastic scraper strip 102 is made of rubber, the water-absorbing layer 17 is a water-absorbing sponge or a water-absorbing cloth and is bonded and fixed to the swing plate 16 by double-sided adhesive; the air inlet 4 and the air inlet cavity 111 are both supplied with air by the air pump fan of the factory.

[0032] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A water cooling mechanism for a satellite flexographic printing press, comprising a frame (1) and a cooling roller (2) rotatably arranged on the frame (1), characterized in that: The cooling roller (2) is hollow inside to form an air cooling chamber (3), and an air inlet (4) and an air outlet (5) connected to the air cooling chamber (3) are respectively provided at both ends of the cooling roller (2), a water cooling groove (6) is provided below the cooling roller (2), and a portion of the cooling roller (2) is located in the water cooling groove (6), and a water inlet (7) and a water outlet (8) are provided on the water cooling groove (6), a contact area (9) is formed at the position where the outer peripheral surface of the cooling roller (2) contacts the substrate, and a wiper assembly (10) in contact with the outer peripheral surface of the cooling roller (2) is provided on the outer side of the cooling roller (2) corresponding to the contact area (9) in front of the rotation direction of the cooling roller (2), and a water blowing assembly (11) is provided behind the wiper assembly (10) along the rotation direction of the cooling roller (2).

2. The water cooling mechanism of the satellite flexographic printing press according to claim 1 is characterized in that: The wiper assembly (10) comprises a wiper bracket (101) mounted on a frame (1) and a plurality of elastic scraper strips (102) arranged on the wiper bracket (101); the plurality of elastic scraper strips (102) extend axially along the cooling roller (2) and are arranged in intervals along the rotation direction of the cooling roller (2); one side of each elastic scraper strip (102) contacts the outer peripheral surface of the cooling roller (2); and each elastic scraper strip (102) is detachably fixedly connected to the wiper bracket (101).

3. The water cooling mechanism of the satellite flexographic printing press according to claim 2 is characterized in that: The invention comprises an inserting strip (12) formed on each elastic scraping strip (102) and a slot (13) formed on a wiper bracket (101) and for the inserting strip (12) to be inserted into, wherein the slot (13) extends along the axial direction of the cooling roller (2) to form a long strip shape, and an adjustment component for adjusting the distance between the elastic scraping strip (102) and the outer peripheral wall of the cooling roller (2) is provided between the wiper bracket (101) and the frame (1).

4. The water cooling mechanism of the satellite flexographic printing press according to claim 3 is characterized in that: The adjustment assembly comprises two adjustment bolts (19); the wiper bracket (101) is slidably arranged on the frame (1) and reciprocates toward one side of the cooling roller (2); the two adjustment bolts (19) are respectively arranged at two ends of the wiper bracket (101); each of the adjustment bolts (19) passes through the frame (1) and is threadedly connected thereto; and one end that passes through is rotationally connected to the wiper bracket (101) to form an axial linkage.

5. The water cooling mechanism of the satellite flexographic printing press according to claim 1, characterized in that: The water blowing assembly (11) comprises a water blowing knife frame (113) having an air inlet cavity (111) and an air outlet gap (112) arranged on the water blowing knife frame (113) and connecting the air inlet cavity (111) with the outside, wherein the air outlet of the air outlet gap (112) faces the outer peripheral wall of the cooling roller (2) and extends along the axial direction of the cooling roller (2) to form a long strip.

6. The water cooling mechanism of the satellite flexographic printing press according to claim 1, characterized in that: The frame (1) is rotatably provided with a rotating shaft (14) and a motor (15) for driving the rotating shaft (14) to rotate at a position between the water blowing assembly (11) and the contact area (9); a swing plate (16) is hingedly connected to the outer peripheral wall of the rotating shaft (14); and a plurality of swing plates (16) are distributed around the outer peripheral wall of the rotating shaft (14); a water absorbing layer (17) is provided on one side of each swing plate (16); and an elastic member for locating the position of the swing plate (16) is provided between each swing plate (16) and the rotating shaft (14); the motor (15) drives the rotating shaft (14) to rotate so that the water absorbing layer (17) on each swing plate (16) can abut against the outer peripheral wall of the cooling roller (2) one by one.

7. The water cooling mechanism of the satellite flexographic printing press according to claim 1, characterized in that: A plurality of heat dissipation fins (18) are distributed on the outer bottom of the water cooling tank (6).

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