Ink blocking device

Abstract

The utility model relates to the field of printing, and discloses an ink blocking device which comprises a scraper used for scraping redundant ink on the surface of a printing roller and further comprises ink blocking plates, the ink blocking plates are installed at the two ends of the printing roller, each ink blocking plate comprises an upper blocking plate and a lower blocking plate, the scraper is located between the upper blocking plate and the lower blocking plate, the upper blocking plate is a thin sheet arching upwards, and the lower blocking plate is a thin sheet arching upwards. The upper baffle covers the upper part of the printing roller; the lower baffle is a sheet which is arched downwards and covers the lower part of the printing roller; the technical problem that in the prior art, printing ink splashes along the circumferential edge of a plate roller and pollutes the printing environment is solved.

Description

Technical Field

[0001] The utility model relates to the field of printing, in particular to an ink blocking device. Background Art

[0002] Gravure printing is a printing process whose basic principle is to cover the entire surface of the printing plate with ink, and then use a special scraper to remove the ink in the blank part. Under greater pressure, the ink is transferred to the surface of the substrate to obtain a printed product. The characteristic of the gravure printing plate is that the image part is concave, and the degree of concavity varies with the level of the image, while the blank part of the printing plate is convex and on the same plane.

[0003] For example, the Chinese patent with authorization announcement number CN 218986108 U includes an ink tank, a plate roller, a scraper, and two scrapers, one end of which is the contact end of the plate roller end face; the plate roller is arranged in the ink tank, and the scraper is detachably installed on the ink tank, and one end of the scraper is in contact with the circumferential surface of the plate roller, and the lower baffle is arranged inside the plate roller installation space and is located below the scraper, extending along the width direction of the ink tank body.

[0004] The prior art scrapes off the ink on the end face of the plate roller by setting a scraper to prevent the ink from splashing on the side of the ink groove; however, when the plate roller is immersed in the ink and rotates at a high speed, the circumference of the plate roller produces a shearing effect on the liquid surface, so that the ink moves rapidly to both sides under the squeezing of the plate roller and splashes out along the circumferential edges on both sides of the plate roller, and the scraper can only remove the ink on the end face of the plate roller, and cannot prevent the ink from splashing out along the edge; if the scraper is set to directly contact the edges and corners of the plate roller to scrape off the ink on the edges and corners, the contact area between the scraper and the edges and corners is small, and during the high-speed rotation, a strong friction force is generated between the two, and this friction force will directly lead to serious wear of the scraper and the edges and corners of the plate roller, especially under long-term operation and high-load working conditions. Utility Model Content

[0005] The utility model aims to provide an ink blocking device to solve the technical problem in the prior art that ink splashes out along the circumferential edge of a plate roller and pollutes the printing environment.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ink blocking device, including a scraper for scraping off excess ink on the surface of a plate roller, and also including an ink blocking plate, wherein the ink blocking plate is installed at both ends of the plate roller, and the ink blocking plate includes an upper baffle and a lower baffle, and the scraper is located between the upper baffle and the lower baffle, and the upper baffle is a thin sheet that arches upward, and the upper baffle covers the upper part of the plate roller; the lower baffle is a thin sheet that arches downward, and the lower baffle covers the lower part of the plate roller.

[0007] The principles and advantages of this scheme are: the ink baffle is divided into an upper baffle and a lower baffle, which cover the upper and lower parts of the plate roller respectively. This design can fully block the ink splash that may be generated during the rotation of the plate roller; both the upper baffle and the lower baffle adopt an arched thin sheet design, which can better fit the shape of the plate roller and improve the blocking effect; the scraper is located between the upper baffle and the lower baffle, and can scrape off excess ink on the surface of the plate roller, which not only ensures the uniform distribution of ink, but also effectively prevents ink splashing; and the design of the lower baffle can reduce the influence of eddy currents in the ink groove. When the plate roller rotates, it can reduce the disturbance of the ink caused by the movement of the plate roller, thereby reducing the amount of ink splashed.

[0008] As an improvement, it also includes a mounting plate, the scraper is detachably fixed on the mounting plate, an extension surface extending toward the plate roller is provided at one end of the mounting plate near the scraper, the lower baffle is detachably fixed on the extension surface of the mounting plate, and the upper baffle is detachably fixed on the scraper.

[0009] The beneficial effects of this improvement are: through the mounting plate, the scraper and the lower baffle plate can be installed and disassembled as independent modules, which greatly simplifies the maintenance and replacement process of the equipment; when the scraper or the ink baffle plate is worn or damaged, only the corresponding module needs to be replaced, and there is no need to overhaul the entire ink baffle device, which improves the maintenance efficiency of the equipment and reduces the maintenance cost; the extended surface of the mounting plate close to one end of the scraper provides precise positioning for the installation of the lower baffle plate, ensuring the appropriate distance and angle between the ink baffle plate and the plate roller, further improving the printing accuracy and stability.

[0010] As an improvement, the scraper is detachably fixed to the mounting plate by a scraper fixing component, the scraper fixing component includes a fixing seat, a fixing block and a locking piece; the fixing seat is fixed to the surface of the mounting plate, an internal threaded hole is provided on the upper surface of the fixing seat, the fixing block is low in front and high in the back, the front end face of the fixing block is fixed to the scraper, the rear end face of the fixing block is provided with a strip hole, the locking piece is in the shape of a bolt, and the threaded rod of the locking piece passes through the strip hole and is threadedly fixed in the internal threaded hole of the fixing seat.

[0011] The beneficial effects of this improvement are: the fixed seat is fixed on the surface of the mounting plate, providing a stable supporting foundation for the scraper; the front end face of the fixed block is fixed on the scraper, and the rear end face is provided with a strip hole, which is connected with the internal threaded hole of the fixed seat in cooperation with the locking piece, ensuring the stable installation of the scraper on the mounting plate; and when the plate roller rotates, it can still maintain a stable posture to reduce printing quality problems caused by shaking; the strip hole design on the fixed block allows the scraper to have a certain adjustment space when fixed, so as to adapt to scrapers of different sizes and shapes, thereby improving the versatility of the equipment; when the scraper needs to be replaced due to wear or damage, the scraper can be easily removed by loosening the locking piece, thereby reducing the maintenance cost and time of the equipment and improving work efficiency.

[0012] As an improvement, the fixing seat is in the shape of a rectangular block, and the fixing block is a three-sided folded plate. The rear end face is parallel to the front end face but is relatively positioned backward, forming a staggered parallel relationship. The front end face and the rear end face are connected by a folded surface, and the folded surface is inclined at a certain angle to the horizontal plane.

[0013] The beneficial effects of this improvement are: the rectangular block-shaped fixing seat provides a stable supporting surface, making the scraper more stable and less likely to shake when fixed; the fixing block with a three-sided folding plate design is inclined at a certain angle to the horizontal plane through the folding surface, which increases the contact area between the fixing block and the scraper and the mounting plate, thereby improving the stability of the structure; the folding surface design between the front end face and the rear end face allows the fixing block to have a certain adjustment space when fixing the scraper to adapt to scrapers of different shapes and sizes.

[0014] As an improvement, the bar hole of the fixing block is an open hole, and one side of the bar hole is open without edges and is directly connected to the edge of the rear end surface of the fixing block.

[0015] The beneficial effects of this improvement are: the design of the open-type bar hole makes it easier for the threaded rod of the locking piece to pass through the bar hole and connect with the internal threaded hole of the fixing seat; the installation of the scraper can be completed quickly without precise alignment of the hole position, which improves work efficiency; the traditional closed-type hole is prone to stress concentration at the edge of the hole when subjected to the pressure of the locking piece, and long-term use may cause cracks or damage to the fixing block. The design of the open-type hole disperses the stress to a wider area, reducing the risk of stress concentration and improving the durability of the fixing block.

[0016] As an improvement, the head of the locking member is in the shape of a disc tangent to the rear end surface of the fixing block.

[0017] The beneficial effect of this improvement is that the disc-shaped locking member head is tangent to the rear end surface of the fixing block, which increases the contact area with the fixing block, thereby enhancing the locking stability. This design can ensure that the scraper is more firmly fixed and reduce the risk of loosening or falling off due to vibration or impact during operation.

[0018] As an improvement, a plurality of the fixing blocks are provided at equal intervals on the scraper, two fixing seats are provided on the mounting plate, and any two adjacent fixing blocks are assembled with the fixing seats.

[0019] The beneficial effect of this improvement is that the scraper position can be adjusted by adjusting the matching and fixing of the fixing seat with different fixing blocks.

[0020] As an improvement, the ink shielding device also includes a translation assembly for driving the ink shielding plate to translate close to the plate roller and a rotation assembly for driving the ink shielding plate to rotate close to the plate roller, the mounting plate is fixedly mounted on the translation assembly, and the translation assembly is fixedly mounted on the rotation assembly.

[0021] The beneficial effect of this improvement is that the mounting plate can be flipped away from the ink tank by rotating the assembly, which facilitates the disassembly and maintenance of the scraper and ink shield, and the horizontal assembly can adjust the distance between the scraper and ink shield and the plate roller. The combination of the two can more flexibly adapt to plate rollers in different positions and angles.

[0022] As an improvement, the translation assembly includes a screw rod, a screw rod seat and a moving block. The screw rod is rotatably installed in the screw rod seat. One end of the screw rod is rotatably connected to the inner wall of the screw rod seat. The other end of the screw rod passes through the screw rod seat and is provided with a turntable. The screw rod is rotatably connected to the side wall of the screw rod seat passed through. A moving block is threadedly sleeved on the screw rod, and the moving block is fixedly connected to the mounting plate.

[0023] As an improvement, the rotating assembly includes a base and a rotating shaft, the base is rotatably connected to both ends of the rotating shaft, the screw seat is fixedly connected to the rotating shaft, and the rotating shaft and the screw are respectively fixedly connected to the output end of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0026] Figure 3 for Figure 1 A partial enlarged view of point B in the middle.

[0027] Figure 4 It is a structural schematic diagram of the mounting plate of the utility model in a vertical state.

[0028] Figure 5 It is a structural schematic diagram of the installation plate of the utility model in a horizontal state. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementation methods:

[0030] The figure marks in the drawings of the specification include: ink tank 1, plate roller 2, mounting plate 3, scraper 4, upper baffle 5, lower baffle 6, bolt 7, compression spring 8, pressure plate 9, fixed seat 10, fixed block 11, locking piece 12, screw 13, screw seat 14, moving block 15, rotating shaft 16 and base 17.

[0031] Example 1

[0032] Basically as attached Figure 1As shown, an ink blocking device is installed beside the ink tank 1 to prevent the high-speed running plate roller 2 in the ink tank 1 from bringing out the ink and splashing around to cause pollution. The ink blocking device includes a supporting mechanism and a baffle mechanism, the baffle mechanism is installed on the adjustment mechanism, and the supporting mechanism is installed beside the ink tank 1.

[0033] The baffle mechanism includes a mounting plate 3, a scraper 4 for scraping off excess ink on the surface of the plate roller 2, an upper baffle 5, a lower baffle 6 and a mounting assembly. The scraper 4 is detachably fixed to the mounting plate 3, and one end of the scraper 4 is the contact end of the peripheral surface of the plate roller 2. The upper baffle 5 is an upwardly arched thin sheet, which is located above the scraper 4 and covers the upper part of the plate roller 2. One end of the upper baffle 5 is detachably fixed to the scraper 4. The lower baffle 6 is a downwardly arched thin sheet, which is located below the scraper 4 and covers the lower part of the plate roller 2. One end of the lower baffle 6 is detachably fixed to the mounting plate 3.

[0034] As attached Figure 2 and attached Figure 3 As shown, the mounting assembly includes a baffle fixing component and a scraper 4 fixing component, the baffle fixing component includes a bolt 7, a pressure plate 9 and a clamping spring 8, the upper baffle 5 and the lower baffle 6 are respectively mounted on the scraper 4 and the mounting plate 3 through the baffle fixing component, the pressure plate 9 includes an integrally formed pressing surface and a lifting portion, the pressing surface is a long rectangular surface, one end of the lifting portion is arranged at the middle section of the pressing surface, and the pressing surface and the lifting portion are T-shaped plates with the tail ends raised; a through hole is provided on the pressing surface, and an internal threaded hole opposite to the pressing surface is provided on the mounting surface, and the clamping spring 8 is wound around the thread of the bolt 7 On the rod, the screw of the bolt 7 passes through the through hole of the pressure surface and is threadedly connected with the internal threaded hole on the mounting surface, fixing the pressure plate 9 on the mounting surface, the clamping spring 8 is located between the head of the bolt 7 and the pressure plate 9 in a compressed state, and the baffle is located between the mounting surface and the pressure plate 9 and clamped and fixed; the staff holds the lifting part to move the pressure plate 9 outward along the axial direction of the bolt 7, and the clamping spring 8 continues to compress and pull the distance between the pressure plate 9 and the mounting surface so that the baffle can be pulled out; loosen the lifting part, and the clamping spring 8 squeezes the pressure plate 9, so that the pressure plate 9 returns to a state of being close to the mounting surface. The end of the lifting part away from the pressure surface tilts away from the mounting surface. The two ends of the pressure plate 9 are fixed to the mounting surface by two groups of bolts 7 and the clamping spring 8 respectively.

[0035] The mounting plate 3 is provided with an extension surface extending toward the ink tank 1 at one end close to the scraper 4, and the bolts 7 of the baffle fixing member for mounting the lower baffle 6 fix the pressing plate 9 on the extension surface, and one end of the lower baffle 6 is clamped between the pressing plate 9 and the extension surface; the bolts 7 of the baffle fixing member for mounting the upper baffle 5 fix the pressing plate 9 on the scraper 4, and one end of the upper baffle 5 is clamped between the pressing plate 9 and the scraper 4. The length of the pressing surface of the pressing plate 9 is greater than the width of the baffle, thereby increasing the range of the baffle in the pressing plate 9 for adjustment.

[0036] The ink outlets in the ink tank 1 are located at the two ends of the plate roller 2, so the lower baffle 6 and the upper baffle 5 are two pieces, and are respectively installed at the two ends of the plate roller 2.

[0037] As attached Figure 4 As shown, the scraper 4 fixing component includes a fixing seat 10, a fixing block 11 and a locking piece 12. The fixing seat 10 is in the shape of a rectangular block, and the fixing seat 10 is welded on the surface of the mounting plate 3. An internal threaded hole is provided on the upper surface of the fixing seat 10. The fixing block 11 is a three-sided folded plate, which is generally low in the front and high in the back. The rear end face is parallel to the front end face but relatively backward, forming a staggered parallel relationship. The front end face and the rear end face are connected by a folded surface, and the folded surface is inclined at a certain angle to the horizontal plane; the front end face of the fixing block 11 is fixed to the scraper 4 by bolts, and the rear end face of the fixing block 11 is provided with a strip hole, which is an open hole, and one side of the strip hole is open without an edge and is directly connected to the edge of the rear end face. The locking piece 12 is in the shape of a bolt, and the head of the locking piece 12 is in the shape of a disc tangent to the rear end face of the fixing block 11. The threaded rod of the locking piece 12 passes through the bar hole and is threadedly fixed in the internal threaded hole of the fixing seat 10, so that the rear end face of the fixing block 11 is clamped between the head of the locking piece 12 and the fixing seat 10, thereby achieving the fixation of the mounting plate 3 and the scraper 4.

[0038] Four fixing blocks 11 are evenly spaced on the scraper 4, and two fixing seats 10 and a locking member 12 are provided on the mounting plate 3. Any two adjacent fixing blocks 11 on the scraper 4 can be assembled with the fixing seats 10 on the mounting plate 3 to adjust the relative position of the scraper 4 and the mounting plate 3.

[0039] As attached Figure 5 As shown, the support mechanism includes a rotating assembly and a translation assembly, and the translation assembly includes a screw 13, a screw seat 14 and a moving block 15. The screw 13 is rotatably installed in the screw seat 14, one end of the screw 13 is rotatably connected to the inner wall of the screw seat 14 through a bearing, and the other end of the screw 13 penetrates the screw seat 14 and is provided with a turntable, and the screw 13 is rotatably connected to the side wall of the screw seat 14 through a bearing. The screw 13 is threaded with a moving block 15, which is rectangular and moves in the screw seat 14 along the axial direction of the screw 13. The moving block 15 is fixedly welded to the mounting plate 3.

[0040] The rotating assembly includes a base 17 and a rotating shaft 16. The base 17 is located at both ends of the rotating shaft 16 and is rotatably connected through bearings. The screw seat 14 is fixedly welded to the rotating shaft 16. The rotating shaft 16 and the screw 13 are respectively fixedly connected to the output end of the servo motor to drive the rotating shaft 16 and the screw 13 to rotate.

[0041] The specific implementation process is as follows:

[0042] When the ink blocking device is adjusted and put into use, the mounting plate 3 is in a vertically upward state, the strip hole opening of the fixed block 11 on the scraper 4 is aligned with the locking member 12 and inserted, and the locking member 12 is rotated to fix the scraper on the mounting plate 3, and then the pressing plate 9 on the extension is lifted to fix the lower baffle 6 on the mounting plate 3, and the rotating shaft 16 is driven to rotate 90° to extend the lower baffle 6 into the ink tank 1, and the screw rod 13 is driven to rotate to make the mounting plate 3 approach the plate roller 2 until the scraper 4 contacts the peripheral surface of the plate roller 2, and then the pressing plate 9 on the scraper 4 is lifted to fix the upper baffle 5 on the scraper 4. The upper baffle 5 and the lower baffle 6 are formed to cover the upper and lower parts of the plate roller 2 respectively.

[0043] As attached Figure 1 As shown in the figure, when the plate roller 2 is immersed in the ink and rotates clockwise at a high speed, the circumference of the plate roller 2 presses over the ink liquid surface, generating a shearing effect on the liquid surface, so that the ink moves rapidly to both sides under the pressure of the plate roller 2, and splashes out along the circumferential edges on both sides of the plate roller 2, forming axial water splashes at the end of the plate roller 2. The splashed ink will contaminate the dyed cloth to be processed and the entire printing workshop.

[0044] The rotation of the ink plate roller 2 below the plate roller 2 forms a vortex, so that part of the ink is brought out of the liquid surface with the rotation, and the setting of the lower baffle 6 can block the formation of part of the vortex below the plate roller 2, reduce the ink splashed with the rotation of the plate roller 2, and reduce the scraping pressure of the scraper 4. Furthermore, the upper baffle 5 further blocks a small part of the splashed ink, thereby achieving comprehensive blocking of the ink.

[0045] Example 2

[0046] On the basis of Example 1, the upper baffle 5 and the lower baffle 6 are thin sheets of metal or polymer materials, so that the upper baffle 5 and the lower baffle 6 have certain support and flexibility. In addition, within the elastic deformation range, the upper baffle 5 and the lower baffle 6 can return to their original shapes after the external force is removed. The metal material can be aluminum alloy and stainless steel, etc., and the polymer material can be polyurethane, etc.

[0047] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An ink blocking device, comprising a scraper for scraping off excess ink on the surface of a plate roller, characterized in that: It also includes an ink baffle, which is installed at both ends of the plate roller. The ink baffle includes an upper baffle and a lower baffle. The scraper is located between the upper baffle and the lower baffle. The upper baffle is a thin sheet that arches upward and covers the upper part of the plate roller; the lower baffle is a thin sheet that arches downward and covers the lower part of the plate roller.

2. An ink blocking device according to claim 1, characterized in that: It also includes a mounting plate, the scraper is detachably fixed on the mounting plate, an extension surface extending toward the plate roller is provided at one end of the mounting plate close to the scraper, the lower baffle is detachably fixed on the extension surface of the mounting plate, and the upper baffle is detachably fixed on the scraper.

3. An ink blocking device according to claim 2, characterized in that: The scraper is detachably fixed to the mounting plate by a scraper fixing component, and the scraper fixing component includes a fixing seat, a fixing block and a locking piece; the fixing seat is fixed to the surface of the mounting plate, an internal threaded hole is provided on the upper surface of the fixing seat, the fixing block is low in front and high in the back, the front end face of the fixing block is fixed to the scraper, the rear end face of the fixing block is provided with a strip hole, the locking piece is in the shape of a bolt, and a threaded rod of the locking piece passes through the strip hole and is threadedly fixed in the internal threaded hole of the fixing seat.

4. An ink blocking device according to claim 3, characterized in that: The fixing seat is in the shape of a rectangular block, and the fixing block is a three-sided folded plate. The rear end face is parallel to the front end face but is relatively positioned backward to form a staggered parallel relationship. The front end face and the rear end face are connected by a folded surface, and the folded surface is inclined at a certain angle to the horizontal plane.

5. An ink blocking device according to claim 4, characterized in that: The bar hole of the fixing block is an open hole, and one side of the bar hole is open without edges and is directly connected to the edge of the rear end surface of the fixing block.

6. An ink blocking device according to claim 5, characterized in that: The head of the locking piece is in the shape of a disc tangent to the rear end surface of the fixing block.

7. An ink blocking device according to claim 6, characterized in that: A plurality of the fixing blocks are arranged at equal intervals on the scraper, two fixing seats are arranged on the mounting plate, and any two adjacent fixing blocks are assembled with the fixing seats.

8. An ink blocking device according to claim 7, characterized in that: The ink shielding device also includes a translation assembly for driving the ink shielding plate to translate close to the plate roller and a rotation assembly for driving the ink shielding plate to rotate close to the plate roller. The mounting plate is fixedly mounted on the translation assembly, and the translation assembly is fixedly mounted on the rotation assembly.

9. An ink blocking device according to claim 8, characterized in that: The translation assembly includes a screw rod, a screw rod seat and a moving block. The screw rod is rotatably installed in the screw rod seat. One end of the screw rod is rotatably connected to the inner wall of the screw rod seat. The other end of the screw rod passes through the screw rod seat and is provided with a turntable. The screw rod is rotatably connected to the side wall of the screw rod seat passed through. A moving block is threadedly sleeved on the screw rod, and the moving block is fixedly connected to the mounting plate.

10. An ink blocking device according to claim 9, characterized in that: The rotating assembly comprises a base and a rotating shaft. The base is rotatably connected to both ends of the rotating shaft. The screw seat is fixedly connected to the rotating shaft. The rotating shaft and the screw are respectively fixedly connected to the output ends of the servo motor.

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