CN116273759B - Excess glue amount of printed product and bubble scraping type glue coating method on glue coating roller - Google Patents
Excess glue amount of printed product and bubble scraping type glue coating method on glue coating roller Download PDFInfo
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- CN116273759B CN116273759B CN202310474807.8A CN202310474807A CN116273759B CN 116273759 B CN116273759 B CN 116273759B CN 202310474807 A CN202310474807 A CN 202310474807A CN 116273759 B CN116273759 B CN 116273759B
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- sleeve
- scraping
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- 239000003292 glue Substances 0.000 title claims abstract description 254
- 238000007790 scraping Methods 0.000 title claims abstract description 60
- 238000000576 coating method Methods 0.000 title abstract description 17
- 239000011248 coating agent Substances 0.000 title abstract description 15
- 238000007667 floating Methods 0.000 claims abstract description 115
- 230000007480 spreading Effects 0.000 claims abstract description 60
- 238000003892 spreading Methods 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000033001 locomotion Effects 0.000 claims abstract description 27
- 238000010073 coating (rubber) Methods 0.000 claims abstract description 21
- 238000007598 dipping method Methods 0.000 claims abstract description 20
- 238000007639 printing Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims description 15
- 230000007306 turnover Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 abstract description 20
- 238000007761 roller coating Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The application relates to a method for scraping and spreading excessive glue amount of a printed product and bubbles on a glue spreader, wherein a glue spreading system comprises a glue dipping tank, the glue spreader, a floating roll, a left roll sleeve, a right roll sleeve and a glue spreading plate assembly, and the method comprises the following steps: s1, removing bubbles; s2, glue spreading scraping and glue spreading. The application not only reduces the probability of coating the air bubbles on the printed product, improves the gluing quality, and reduces the rejection rate of the product; and improve the homogeneity of rubber coating, then, can also avoid the collision of floating roller and rubber coating roller in the motion, also effectively reduce the motion range of floating roller left and right directions simultaneously, in addition, unnecessary glue can flow back to the gum dipping tank when not scraping, and then be favorable to even frictioning, the more perfect coating of the volume of glue that forms is to printing product simultaneously, and after scraping the glue, the fastest speed carries out the rubber coating, improves the quality of rubber coating.
Description
The application relates to a bubble-removing type glue spreading system and a glue spreading process for printed products, which are applied for 2023, 1 month and 16 days, 202310063151.0.
Technical Field
The application belongs to the field of printing and gluing, and particularly relates to a method for scraping and gluing excessive glue amount of a printed product and bubbles on a glue spreader.
Background
At present, for many packaging bags, gluing between film layers is required to achieve the required composite function, so gluing is a common process.
However, in the conventional gumming process, the conventional operation is: the film layer passing through is subjected to roll brush type gumming by a gumming roll partially positioned in a gumming tank, however, the following defects exist in the conventional gumming process:
1) When the glue spreader moves in the glue dipping groove, bubbles are generated at the periphery of the glue spreader, if the bubbles move to the film layer along with the glue spreader, the phenomena of uneven glue spreading, empty glue drum and the like exist, and the defects of poor quality, high rejection rate and the like of final glue are caused;
2) The amount of glue applied to the glue applicator depends on the thickness of the glue layer formed, and once the glue layer is too large, too small or uneven, the glue quality is affected.
For the above defect 1), many manufacturers make improvements in equipment and processes, such as: chinese patent CN215542252U (publication 1) discloses a glue spreading device and a coating apparatus, and specifically, the glue spreading device includes: the device comprises a frame, wherein a press roller and a transmission roller set for guiding a base material to pass through the press roller are rotationally arranged on the frame, a glue spreading roller arranged below the press roller is rotationally arranged on the frame, a glue basin arranged below the glue spreading roller is arranged on the frame, the glue spreading roller is partially accommodated in the glue basin, a bubble removing mechanism arranged in an accommodating cavity of the glue basin is arranged on the glue basin, and bubbles on a glue liquid level in the glue basin can be pushed along the inner side wall of the glue basin by the bubble removing mechanism. That is, it can push the glue bubble near the applicator toward the inside wall of the glue bowl, preventing the bubble from adhering to the applicator, helping to apply a more uniform glue coating to the substrate.
Aiming at the defect 2), more scraping plates are adopted for scraping, for example, chinese patent CN207981531U (short for disclosure 2) discloses a high-efficiency gluing device of a gluing machine, and the related glue uniform distribution adjusting device can not only control the gluing thickness of a gluing roller, but also enable the gluing of the gluing roller to be more uniform, has good gluing quality, enables the gluing roller to generate glue layers with different thicknesses on fabrics, and has wider applicability.
However, publication 1 has the following technical drawbacks:
a) The bubble removing mechanism adopted in bubble removing is arranged in the glue basin, and the driving component is also soaked in glue, so that the requirement on power output is high;
b) In the process of gluing, the distance between the gluing roller and the bubble-removing roller body is fixed, so that bubbles cannot be smoothly discharged along with the rotation of the roller body when the glue solution surface shakes, and the bubble discharging effect is poor; moreover, the left and right spirals employed may cause uneven distribution of the amount of glue formed on the surface of the applicator.
Meanwhile, the glue uniform distribution adjusting device adopted in the publication 2 has a short glue scraping channel, so that the excessive glue amount and the bubbles on the glue roller cannot be scraped.
Disclosure of Invention
The application aims to solve the technical problems of overcoming the defects of the prior art and providing a brand-new method for scraping the excessive glue amount of a printing product and bubbles on a glue spreader.
In order to solve the technical problems, the application adopts the following technical scheme:
the utility model provides a surplus glue volume of printing product and bubble strike-off rubber coating method on rubber coating roller, its rubber coating system that adopts includes the gum dipping tank, the rubber coating roller in the glue solution of lower part position gum dipping tank, float the roller on the glue solution of gum dipping tank, coaxial cover is established in left roller cover and right roller cover of float roller left and right end, be located float roller top and upset and scrape the doctor blade subassembly of establishing on waiting the rubber coating portion, wherein left roller cover and right roller cover separate float roller and rubber coating roller, be formed with spiral drainage groove on the float roller, the doctor blade that forms between doctor blade subassembly and the waiting the rubber coating portion includes a plurality of seam sections of arranging in proper order from bottom to top, and this method includes the following steps:
s1, removing bubbles, namely enabling the left end part and the right end part of a floating roller to emerge from the left end part and the right end part of the glue spreading roller, enabling a printing product to be positioned between a left roller sleeve and a right roller sleeve, enabling the left end part or the right end part of the floating roller to freely abut against the inner side of the glue dipping groove, enabling the left roller sleeve and the right roller sleeve to rotate in opposite directions by rotation of the glue spreading roller, enabling glue solution between a part to be glued and the floating roller of the glue spreading roller to flow downwards from the middle part to the left end part and the right end part, enabling bubbles attached to the part to be glued to be discharged to the outer sides of the two ends and/or the floating roller, enabling the left roller sleeve, the right roller sleeve and the floating roller to keep rotating and move between the glue spreading roller along with floating of a glue level;
s2, glue spreading scraping and glue spreading, wherein a plurality of seam sections formed by the glue spreading plate assembly scrape the excessive glue amount on the part to be glued, and the glue is coated on the surface of the printing product in a roller brush mode.
According to a specific implementation and preferred aspect of the present application, in S1, the direction of stress applied to the left and right roller sleeves by the glue roller is upward and backward along the tangential direction of the lamination, so that force decomposition is formed in the horizontal and vertical directions to drive the floating roller, the left and right roller sleeves to integrally rotate and move backward away from the glue roller direction, and keep rotating under the inertia driving.
Preferably, in the glue solution wave caused by the glue applicator, forward thrust generated by the wave pushes the floating roll towards the glue applicator again, so as to complete the repetitive motion process of relative detachment and relative fitting.
According to a further specific and preferred aspect of the application, in S1, at most half of the lower part of the floating roll is located below the level of said glue. The dead weight of the adopted floating roller is assembled according to the buoyancy provided by the glue solution, so that the floating requirement formed by the glue quantity in different glue dipping tanks can be met, and the practicability is high.
According to still another specific embodiment and preferred aspect of the present application, the left spiral drainage groove and the right spiral drainage groove are formed in the circumferential direction of the floating roller so as to have opposite spiral winding directions from the middle to both ends. In the rotation of the floating roller, the flow can be guided from the middle part to the two ends. In some embodiments, the left spiral drainage slot and the right spiral drainage slot are disposed in communication from the middle.
In some preferred embodiments, the left and right spiral drainage grooves pass through the interiors of the left and right roller sleeves, respectively. Under this structural design, can avoid forming drainage obstacle, cause the probability that flows backward low.
According to still another specific embodiment and preferred aspect of the present application, the floating roll includes a hollow tube having left and right spiral drainage grooves formed on a circumferential surface thereof, and a weight tube plug at both ends of the hollow tube. The buoyancy device has a simple structure, meets the requirements of floating and rotation according to actual needs, and in some specific embodiments, at most half of the lower part of the floating roller is positioned below the liquid level of the glue solution, so that buoyancy is ensured to meet the balance of stress in the vertical direction, and rotation foam discharging is implemented more laborsaving.
Preferably, the left and right ends of the floating roller emerge from the left and right ends of the applicator roller. Thus, the effective width of the glue coating is effectively increased, so as to meet the glue coating of printing products with different widths.
In some embodiments, the left roller sleeve and the right roller sleeve each comprise a sleeve body, wherein ribs are distributed on the circumference of the sleeve body, and an anti-slip rolling groove is formed between two adjacent ribs. The design has the advantages that: 1. under the arrangement of the left roller sleeve and the right roller sleeve, the floating roller and the glue spreading roller are relatively separated, so that glue solution near a part to be glued can flow more easily; 2. avoiding collision between the floating roller and the glue spreading roller in motion, and affecting the glue spreading effect.
Preferably, the ribs extend along the length of the floating roll and are spaced circumferentially about the left and right roll sleeves, respectively. The device reduces the probability of slipping or sideslip in the process of opposite movement, and can better contact the glue spreading roller to drive the floating roller to rotate.
According to still another specific implementation and preferred aspect of the present application, the glue applicator surface bubble removal device further comprises magnetic rings formed on the floating roll and/or the left roll sleeve and/or the right roll sleeve, wherein the adsorption force formed by the magnetic rings drives the floating roll to keep a distance and tangentially fit the movement trend of the glue applicator from the left roll sleeve and the right roll sleeve. The relative sticking movement trend formed by the magnetic force is adopted, once the glue spreader forms acting force in the tangential direction, the glue spreader can be quickly closed, and the floating rolls are kept close to or far away from the glue spreader in a spaced manner in the rotation process, so that contact type foam discharging is avoided.
Preferably, the magnetic ring is arranged in the floating roller, the floating roller is a metal pipe, and the left roller sleeve and the right roller sleeve are plastic pieces. Or the magnetic rings are respectively positioned in the left roller sleeve and the right roller sleeve; and the floating roller, the left roller sleeve and the right roller sleeve are all plastic pieces.
According to a further specific implementation and preferred aspect of the application, the glue scraping plate assembly comprises a glue scraping plate and a turning piece for driving the glue scraping plate to turn around the length of the glue spreader, wherein a glue scraping gap is formed between the glue scraping plate and the part to be glued, and the width of the glue scraping gap is adjusted along with the movement of the turning piece. To fulfill the glue coating requirements of different thicknesses.
Preferably, the scraping plate is tilted upwards, the edge of the upper part is relatively close to the upper part of the part to be glued, the plurality of seam sections are respectively a first seam section, a second seam section and a third seam section, the seam width formed by the first seam section is gradually narrowed from bottom to top, the second seam section extends from the upper part of the first seam section along the tangential direction where the parallel scraping point is located, and the third seam section is gradually widened from the upper part of the second seam section. The arrangement has the advantages that: the redundant glue can flow back to the dipping tank when not scraping, thereby facilitating the scraping operation, and the formed glue quantity is coated to the printing product more perfectly.
Preferably, the edge of the upper portion of the squeegee is positioned adjacent to the transfer roller. At this time, after the glue is scraped, the glue is coated at the fastest speed, and the quality of the glue is improved.
And a glue scraping seam is formed between the bottom edge of the glue scraping plate and the part to be glued. The design of the glue scraping seam realizes the excessive glue quantity, the bubble scraping on the glue roller and the uniform glue spreading.
Due to the implementation of the technical scheme, compared with the prior art, the application has the following advantages:
the application is based on that the floating roller has no power and small axial displacement, and the floating roller is kept synchronous with the left roller sleeve, the right roller sleeve and the floating roller and rotates in opposite directions with the glue spreading roller and moves between the position close to or far away from the glue spreading roller along with the floating of the glue level so as to remove the bubbles attached to the glue spreading roller to the side and/or the two ends of the floating roller far away from the glue spreading roller; the excessive glue amount and bubbles on the glue roller are scraped through the arrangement of the multi-slit sections, so that the bubbles on the surface of the glue roller are removed, the probability of coating the bubbles on a printed product is reduced, the glue coating quality is improved, and the rejection rate of the product is reduced; and improve the homogeneity of rubber coating, then, can also avoid the collision of floating roller and rubber coating roller in the motion, also effectively reduce the motion range of floating roller left and right directions simultaneously, in addition, unnecessary glue can flow back to the gum dipping tank when not scraping, and then be favorable to even frictioning, the more perfect coating of the volume of glue that forms is to printing product simultaneously, and after scraping the glue, the fastest speed carries out the rubber coating, improves the quality of rubber coating.
Drawings
FIG. 1 is a schematic front view of a bubble-eliminating gumming system for a printed product of example 1;
FIG. 2 is a schematic left-hand view of FIG. 1 (partially omitted);
FIG. 3 is an enlarged schematic view of the dancer roll, left and right roll sleeves of FIG. 1 in semi-section;
FIG. 4 is an enlarged schematic view of FIG. 1 at A;
FIG. 5 is an enlarged schematic view of the floating roll and the left and right roll sleeves in example 2 in a semi-section;
FIG. 6 is an enlarged schematic view of the floating roll, left and right roll sleeves in example 3 in semi-section;
wherein: 1. a gum dipping tank;
2. a glue spreading roller; 20. a part to be glued; 21. a glued part;
3. a floating roller; 30. a left spiral drainage groove; 31. a right spiral drainage groove; 3a, a hollow tube; 3b, a counterweight pipe plug;
4. a doctor blade assembly; 40. a rubber scraping plate; 41. a turnover piece; f. scraping a glue line; f1, a first seam section; f2, a second seam section; f3, a third seam section;
5. a conveying roller;
6. a left roller sleeve; 7. a right roller sleeve; c. an anti-slip rolling groove;
8. UV lamp (curing lamp); 9. a transfer roller;
H. a magnetic ring;
p, printing a product; q, bubble.
Detailed Description
The present application will be described in detail with reference to the drawings and the detailed description, so that the above objects, features and advantages of the present application can be more clearly understood. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Example 1
As shown in fig. 1 and 2, the bubble-removing type gumming system for a printed product of the present embodiment includes a gumming tank 1, a gumming roller 2 in the gum solution in the gumming tank 1 at the lower part, a floating roller 3 floating on the gum solution in the gumming tank 1, a scraping plate assembly 4 located above the floating roller 3 and turning over and scraping on the gumming roller 2, and a left roller sleeve 6 and a right roller sleeve 7 respectively sleeved at the left and right ends of the floating roller 3.
Specifically, the printed product P is roll-brushed by a transfer roller 5 cooperating with the applicator roller 2.
In this example, the conveying roller 5 is located right above the glue spreader 2, and one side of the glue spreader 2 located at the upper portion of the glue solution is a portion to be glued 20, and the other side is a glued portion 21, where the portion to be glued 20 and the glued portion 21 are symmetrically disposed.
The left spiral drainage groove 30 and the right spiral drainage groove 31 which are opposite in spiral winding direction from the middle to the two ends are formed in the circumferential direction of the floating roller 3, the floating roller 3 synchronously and oppositely rotates along with the glue spreading roller 2, glue solution between the floating roller 3 and the glue spreading roller 2 is drained from the middle to the left and the right ends, and bubbles attached to the part 20 to be glued are discharged to the side and the two ends of the floating roller 3 away from the glue spreading roller 2.
The left spiral drainage groove 30 and the right spiral drainage groove 31 are communicated with each other from the middle. Thus, drainage and foam removal are performed more preferably during the relative rotation.
The left and right ends of the floating roller 3 emerge from the left and right ends of the applicator roller 2, respectively. Therefore, the effective width of the gluing is effectively increased to meet the gluing of printed products with different widths, and the probability of the transverse movement of the floating roller 3 in the length direction of the floating roller in opposite movement is further reduced.
The left roller sleeve 6 and the right roller sleeve 7 are attached to the part 20 to be glued in a circumferential tangential manner, and the printed product P is positioned between the left roller sleeve 6 and the right roller sleeve 7. Under the layout of the left roller sleeve and the right roller sleeve, the floating roller and the glue spreading roller are relatively separated, and glue solution flowing close to the part to be glued is more facilitated.
The left spiral drainage groove 30 and the right spiral drainage groove 31 respectively penetrate through the left roller sleeve 6 and the right roller sleeve 7. Therefore, the left roller sleeve and the right roller sleeve can effectively penetrate through the inside of the left roller sleeve and the right roller sleeve, and the probability of forming drainage barriers and causing backflow is low.
As shown in fig. 3, the floating roller 3 includes a hollow tube 3a having left and right spiral drainage grooves 30 and 31 formed on the circumferential surface thereof, and a weight tube plug 3b provided at both end portions of the hollow tube 3a, wherein the extending direction of the hollow tube 3a coincides with the extending direction of the glue roller 2. That is, the weight of the counterweight pipe plug 3b can meet the requirement of floating caused by different glue amounts in the glue dipping tanks 1.
The left roller sleeve 6 and the right roller sleeve 7 are annular, and the left roller sleeve 6 and the right roller sleeve 7 comprise ring bodies, wherein the ring bodies and the floating roller 3 are coaxial and synchronously operated (that is, the left roller sleeve 6, the right roller sleeve 7 and the floating roller 3 are relatively fixed and rotate and float together).
In this example, ribs are formed on the circumferential direction of the ring body, respectively, and an anti-slip rolling groove c is formed between two adjacent ribs. By the arrangement, the probability of slipping or sideslip in the process of opposite movement is reduced, and meanwhile, the floating roller can be better contacted to be driven to rotate.
Specifically, the ribs extend along the length of the floating roller 3 and are respectively spaced around the circumference of the ring body.
In this example, the hollow tube 3a is a metal tube, and the left roller sleeve 6 and the right roller sleeve 7 are made of plastic members. The lower part of the floating roller 3 is positioned below the liquid level of the glue solution.
As shown in fig. 4, the doctor blade assembly 4 is turned over and scraped onto the portion to be glued 20.
Specifically, the doctor blade assembly 4 includes a doctor blade 40 and a turnover member 41 for driving the doctor blade 40 to turn around the length of the glue spreader 2, wherein a doctor blade gap f is formed between the doctor blade 40 and the portion to be glued 20, and the width of the doctor blade gap f is adjusted along with the movement of the turnover member 41. To fulfill the glue coating requirements of different thicknesses.
The squeegee 40 is tilted upward and is relatively close to the upper portion of the portion to be glued 20 from the edge of the upper portion. The arrangement has the advantages that: the redundant glue can flow back to the dipping tank when not scraping, thereby facilitating the scraping operation, and the formed glue quantity is coated to the printing product more perfectly.
The edge of the upper portion of the squeegee 40 is disposed close to the conveying roller 5. At this time, after the glue is scraped, the glue is coated at the fastest speed, and the quality of the glue is improved.
A glue line f is formed between the bottom edge of the glue scraper 40 and the portion to be glued 20.
The glue scraping slit f comprises a first slit section f1, a second slit section f2 and a third slit section f3 which are sequentially distributed from bottom to top, wherein the slit width formed by the first slit section f1 is gradually narrowed from bottom to top, the second slit section f2 extends from the upper part of the first slit section f1 along the tangential direction where the parallel scraping point is located, and the third slit section f3 is gradually widened from the upper part of the second slit section f 2. The design of the glue scraping seam is more beneficial to even glue scraping.
The flipping member 41 may be implemented by a conventional flipping shaft and a flipping motor, and it is not explained in detail here, but is also clear and practical.
In summary, the floating roller 3 and the glue applicator 2 rotate in opposite directions (corresponding to the roller set commonly used in spinning) around the arrow direction shown in fig. 1, and the rotation process is specifically as follows: the direction of the stress applied by the glue spreader 2 to the left roll sleeve 6 and the right roll sleeve 7 is upward and backward along the attached tangential direction, so that the stress forms force decomposition in the horizontal direction and the vertical direction, the floating roll 3, the left roll sleeve 6 and the right roll sleeve 7 integrally rotate and move backward away from the glue spreader direction (the vertical direction is in a balanced state and does not need to be considered), and the floating roll keeps rotating under the driving of inertia, meanwhile, in glue solution fluctuation caused by the glue spreader 2, forward thrust formed by the fluctuation pushes the floating roll 3 to the glue spreader 2 again, and the repeated motion process of relative detachment and relative attachment is completed, so that the rotation of the floating roll 3 is carried out.
Then, it is further described that: since the glue spreading roller extends leftwards and rightwards, the glue solution wave is mainly in the front-rear direction, so that the wave formed in the leftwards and rightwards direction is very small, and even if the floating roller moves in the axial direction, the movement amplitude is very small, so that the leftwards and rightwards direction is not needed to be considered.
Thus, the gluing process of this embodiment is as follows:
s1, bubble removal
The glue spreader 2 rotates clockwise around the axis, the left roll sleeve 6 and the right roll sleeve 7 rotate in opposite directions (anticlockwise), the floating roll 3 rotates synchronously, glue between the part 20 to be glued of the glue spreader 2 and the floating roll 3 is drained from the middle to the left and the right end parts, so that bubbles attached to the part 20 to be glued are discharged to the two ends and the outer side of the floating roll 3, and meanwhile, the left roll sleeve 6, the right roll sleeve 7 and the floating roll 3 keep rotating and move between approaching and separating from the glue spreader 2 along with the floating of the glue level;
s2, gluing scraping and gluing
The plurality of slit segments formed by the doctor blade assembly 4 scrape off the excess glue on the portion to be glued 20 and roll brush-coat the surface of the printed product.
Meanwhile, in order to avoid glue dripping, the UV lamp 8 (or other curing lamps) is adopted for heating, so that the glue layer is cured, and when the product is compounded, hot melting and pressing are performed.
In this case, the UV lamp 8 is located between the transfer roller 9 and the transfer roller 5, and below the printed product P where the glue layer is located.
Example 2
The bubble-eliminating type gumming system for printed matter according to this embodiment is basically the same as that of embodiment 1, except for the following.
As shown in fig. 5, in this example, a magnetic ring H is provided in the floating roller 3.
Specifically, the floating roller 3 is made of metal, and the left roller sleeve 6 and the right roller sleeve 7 are made of plastic.
In this example, the magnetic rings H are annular and are intermittently distributed in the hollow tube 3 a.
Of course, the magnetic ring H may also be formed by assembling a plurality of magnetic strips. That is, the shape of the magnetic ring H is not limited, but the following condition needs to be satisfied:
1) The adsorption force formed by the magnetic rings drives the floating rollers to keep separated and tangentially fit with the movement trend of the glue spreader from the left roller sleeve and the right roller sleeve. Because the relative laminating motion trend is formed by the magnetic force, once the glue spreader forms the acting force in the tangential direction, the glue spreader can be quickly closed, so that the floating rollers keep close to or far away from the glue spreader in a spaced manner in the rotation process, and the contact type foam discharging is avoided.
2) The magnetic ring does not influence the rotation balance of the hollow tube, and meanwhile, the magnetic force formed by the magnetic ring and the resistance formed by the glue solution keep a balance, that is, the magnetic ring is arranged close to or far away from the glue spreading roller (generally, a metal roller) in the resistance change.
In addition, in this example, the floating roller 3 is kept in a rotating and spaced-apart motion state, and the floating roller 3 moves relatively close to and far from the glue spreader 2 under the resistance change formed by the glue, the tangential pushing formed by the glue spreader 2, and the magnetic attraction formed by the magnetic ring H.
Example 3
The bubble-eliminating type gumming system for printed matter according to this embodiment is basically the same as that of embodiment 2, except for the following.
As shown in fig. 6, in this example, the magnetic rings H are distributed in the left roll sleeve 6 and the right roll sleeve 7, that is, the magnetic rings H are relatively adsorbed on the glue spreader 2 through the left roll sleeve 6 and the right roll sleeve 7, and the floating roll 3 is relatively floating on the glue level.
Specifically, the floating roller 3, the left roller sleeve 6 and the right roller sleeve 7 are all made of plastics. In summary, the present embodiment has the following advantages:
1. based on the unpowered and axial unrestricted floating force of the floating roller and the acting force formed by the glue spreading roller, the glue is more attached to the relative floating of the actual glue surface so as to generate relative attaching and separating reciprocating motion, the bubbles at the side of the part to be glued are drained and discharged from the middle to the two ends and the outer side, and the redundant glue quantity and the bubbles on the glue roller are scraped and evenly glued through the arrangement of three seam sections, so that the probability of coating the bubbles on a printed product is reduced, the glue spreading quality is improved, and the rejection rate of the product is reduced; and improves the uniformity of the glue coating.
2. The floating roller, the left roller sleeve and the right roller sleeve are designed and are arranged opposite to the glue spreading roller, so that the floating roller and the glue spreading roller are relatively separated, and glue solution near a part to be glued can flow more easily; and the slipping or sideslip appears in the time of reducing the opposite movement, and the glue solution can be followed left roller shell and right roller shell inside and passed simultaneously, avoids forming drainage obstacle, and causes the probability that the backward flow is low, in addition, avoids floating roller in the motion with the collision of glue spreader, influences the rubber coating effect.
3. The dead weight of the adopted floating roller is assembled according to the buoyancy provided by the glue solution, so that the floating requirement formed by the glue quantity in different glue dipping tanks can be met, and the practicability is high; meanwhile, the floating roller freely props against the inner side of the gum dipping tank from the left end part or the right end part, so that the movement amplitude of the floating roller in the left-right direction is effectively reduced; and a certain limiting force is formed on the floating roller, so that the glue spreading roller is prevented from being separated too far from the glue spreading roller, and the rotation of the floating roller is further assisted to remove bubbles.
4. The layout of the rubber scraping plate assembly and the design of the three-slit section enable redundant rubber to flow back to the rubber dipping tank when not scraped, so that uniform rubber scraping is facilitated, meanwhile, the formed rubber is coated to a printing product more perfectly, after the rubber is scraped, the rubber is coated at the fastest speed, and the quality of the rubber coating is improved.
5. The magnetic ring is adopted to keep a relative adsorption movement trend, so that when the floating roller floats along with the liquid level, the left roller sleeve and the right roller sleeve can be rapidly reciprocated between the separating glue spreader and the attaching glue spreader, and the rotation efficiency of the floating roller is further improved, so that the foam discharging effect is improved; meanwhile, the design of the magnetic ring has an important function of keeping the glue spreading roller and the floating roller in a separated state all the time to perform foam discharging, so that collision of the glue spreading roller caused by the floating roller is avoided, uneven distribution of glue spreading amount is avoided, and the uniformity of glue spreading is further improved.
The present application has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present application and to implement the same, but not to limit the scope of the present application, and all equivalent changes or modifications made according to the spirit of the present application should be included in the scope of the present application.
Claims (7)
1. The utility model provides a surplus glue volume of printing goods and bubble strike-off formula rubber coating method on rubber coating roller, its rubber coating system that adopts includes the gum dipping tank, the lower part is located the rubber coating roller in the glue solution of gum dipping tank, its characterized in that: the glue spreading system also comprises a floating roller floating on the glue solution of the glue dipping tank, a left roller sleeve and a right roller sleeve coaxially sleeved on the left end part and the right end part of the floating roller, a glue scraping plate component which is positioned above the floating roller and overturns to scrape the glue spreading part to be glued, and a magnetic ring formed on the floating roller and/or the left roller sleeve and/or the right roller sleeve, wherein the left roller sleeve and the right roller sleeve separate the floating roller from the glue spreading roller, a spiral drainage groove is formed on the floating roller, the adsorption force formed by the magnetic ring drives the floating roller to keep separate and tangentially fit with the movement trend of the glue spreading roller from the left roller sleeve and the right roller sleeve, a glue scraping gap formed between the glue scraping plate component and the glue spreading part to be glued comprises a plurality of gap sections which are sequentially distributed from bottom to top, the edge of the upper part of the scraping plate is close to the conveying roller, the scraping plate assembly comprises a scraping plate and a turnover piece for driving the scraping plate to turn around the length of the glue spreader, a scraping joint is formed between the scraping plate and the part to be glued, the joint width of the scraping joint is adjusted along with the movement of the turnover piece, the scraping plate is lifted upwards and is relatively close to the upper part of the part to be glued from the edge of the upper part, the joint sections are respectively a first joint section, a second joint section and a third joint section, the joint width formed by the first joint section is gradually narrowed from bottom to top, the second joint section extends from the upper part of the first joint section along the tangential direction of a parallel scraping point, the third joint section is gradually widened from the upper part of the second joint section,
and the method comprises the following steps:
s1, bubble elimination, namely enabling the left end part and the right end part of the floating roller to emerge from the left end part and the right end part of the glue spreading roller, enabling a printing product to be positioned between the left roller sleeve and the right roller sleeve, enabling the left end part or the right end part of the floating roller to freely abut against the inner side of the glue dipping groove, enabling the left roller sleeve and the right roller sleeve to rotate in opposite directions by rotation of the glue spreading roller, enabling glue solution between a part to be glued and the floating roller of the glue spreading roller to flow from the middle part to the left end part and the right end part, enabling bubbles attached to the part to be glued to be discharged to the outer sides of the two ends and/or the floating roller, enabling the left roller sleeve, the right roller sleeve and the floating roller to keep rotating and move between the glue spreading roller along with floating of a glue level;
s2, glue spreading scraping and glue spreading, wherein a plurality of seam sections formed by the glue spreading plate assembly scrape the excessive glue amount on the part to be glued, and the glue is coated on the surface of the printing product in a roller brush mode.
2. The excess glue amount of a printed article and bubble scraping type glue application method on a glue applicator according to claim 1, wherein: in the step S1, the stress applied to the left roller sleeve and the right roller sleeve by the glue spreader is upward and backward along the tangential direction of the lamination, so that force decomposition is formed in the horizontal direction and the vertical direction, so that the floating roller, the left roller sleeve and the right roller sleeve are driven to integrally rotate and move in the direction of separating from the glue spreader backward, and the floating roller, the left roller sleeve and the right roller sleeve are driven to rotate by inertia.
3. The excess glue amount of a printed article and bubble scraping type glue application method on a glue applicator according to claim 2, wherein: in the glue solution fluctuation caused by the glue spreading roller, forward thrust formed by the fluctuation pushes the floating roller to the glue spreading roller again so as to complete the repeated motion process of relative detachment and relative fitting.
4. The excess glue amount of a printed article and bubble scraping type glue application method on a glue applicator according to claim 1, wherein: in S1, at most half of the lower part of the floating roll is located below the level of the glue solution.
5. The excess glue amount of a printed article and bubble scraping type glue application method on a glue applicator according to claim 1, wherein: left spiral drainage groove and right spiral drainage groove that the spiral winding direction is opposite are formed from the middle part to both ends in the circumference of floating roller, wherein left spiral drainage groove and right spiral drainage groove are from the middle part intercommunication setting.
6. The method of excess glue and bubble scraping on a glue applicator of claim 5, wherein: the left spiral drainage groove and the right spiral drainage groove respectively penetrate through the left roller sleeve and the right roller sleeve; and/or the floating roller comprises a hollow pipe with the left spiral drainage groove and the right spiral drainage groove formed on the circumferential surface and a counterweight pipe plug positioned at two ends of the hollow pipe.
7. The excess glue amount of a printed article and bubble scraping type glue application method on a glue applicator according to claim 1, wherein: the left roller sleeve and the right roller sleeve comprise sleeve ring bodies, ribs are distributed on the circumference of the sleeve ring bodies, and anti-slip rolling grooves are formed between two adjacent ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310474807.8A CN116273759B (en) | 2023-01-16 | 2023-01-16 | Excess glue amount of printed product and bubble scraping type glue coating method on glue coating roller |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310063151.0A CN115805166B (en) | 2023-01-16 | 2023-01-16 | Bubble-removing type glue coating system and glue coating process for printed products |
| CN202310474807.8A CN116273759B (en) | 2023-01-16 | 2023-01-16 | Excess glue amount of printed product and bubble scraping type glue coating method on glue coating roller |
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| CN202310063151.0A Division CN115805166B (en) | 2023-01-16 | 2023-01-16 | Bubble-removing type glue coating system and glue coating process for printed products |
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| CN116273759A CN116273759A (en) | 2023-06-23 |
| CN116273759B true CN116273759B (en) | 2023-12-12 |
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| CN202310474713.0A Pending CN116393313A (en) | 2023-01-16 | 2023-01-16 | Surface bubble removal process for glue spreader of printed product |
| CN202310474807.8A Active CN116273759B (en) | 2023-01-16 | 2023-01-16 | Excess glue amount of printed product and bubble scraping type glue coating method on glue coating roller |
| CN202310063151.0A Active CN115805166B (en) | 2023-01-16 | 2023-01-16 | Bubble-removing type glue coating system and glue coating process for printed products |
| CN202310474721.5A Active CN116273663B (en) | 2023-01-16 | 2023-01-16 | Device for removing bubbles on surface of glue spreading roller of printing product |
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| CN202310474713.0A Pending CN116393313A (en) | 2023-01-16 | 2023-01-16 | Surface bubble removal process for glue spreader of printed product |
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| CN202310063151.0A Active CN115805166B (en) | 2023-01-16 | 2023-01-16 | Bubble-removing type glue coating system and glue coating process for printed products |
| CN202310474721.5A Active CN116273663B (en) | 2023-01-16 | 2023-01-16 | Device for removing bubbles on surface of glue spreading roller of printing product |
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| US10338283B2 (en) * | 2015-02-05 | 2019-07-02 | Hangzhou Chinastars Reflective Material Co., Ltd. | Composite glue coating device and preparation method for fancy reflective material using the same |
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- 2023-01-16 CN CN202310474713.0A patent/CN116393313A/en active Pending
- 2023-01-16 CN CN202310474807.8A patent/CN116273759B/en active Active
- 2023-01-16 CN CN202310063151.0A patent/CN115805166B/en active Active
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| CN213501426U (en) * | 2020-09-09 | 2021-06-22 | 湖北科瑞斯材料科技有限公司 | Bubble removing device of printing machine |
| CN214717891U (en) * | 2021-02-01 | 2021-11-16 | 常德金鹏印务有限公司 | Gloss oil coating mechanism of offset printing equipment |
| CN215542252U (en) * | 2021-06-09 | 2022-01-18 | 中山市朗科包装有限公司 | Gluing device and coating equipment |
| CN114771098A (en) * | 2022-05-19 | 2022-07-22 | 陕西金叶印务有限公司 | Device and method for eliminating ink bubbles and preventing ink from skinning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116273663A (en) | 2023-06-23 |
| CN115805166A (en) | 2023-03-17 |
| CN116273663B (en) | 2023-12-08 |
| CN115805166B (en) | 2023-05-16 |
| CN116273759A (en) | 2023-06-23 |
| CN116393313A (en) | 2023-07-07 |
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