Full-automatic laminating and pressing device for printed products

Abstract

The utility model relates to the technical field of printed products, and particularly discloses a full-automatic laminating and pressing device for printed products, scrapers symmetrically arranged above a silica gel roller and a steel roller are matched with a distance adjusting mechanism and an angle adjusting mechanism, and the contact distance between the scrapers and a roller body and the inclination angle of the scrapers can be dynamically adjusted according to the abrasion state of the roller surface; and the scraper is always attached to the roller surface at constant pressure. By means of the design, molten glue liquid and carbonized residues overflowing from the roller surface can be removed in real time, glue stains are effectively prevented from being accumulated on the roller surface, and the roller surface is kept smooth and flat. Meanwhile, the distance adjusting mechanism and the angle adjusting mechanism are symmetrically arranged, so that the problem of eccentric wear of the roller body caused by single-side pressure application is solved, the service life of the roller is prolonged, the defects of film surface indentation, bubbles and the like caused by glue residue residues are reduced, and the yield is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printed products, in particular to a full-automatic laminating and pressing device for printed products. BACKGROUND

[0002] The laminating technology of printed products is a key process for improving the durability and aesthetics of products such as packaging, books, and advertising posters. By compounding a layer of high polymer film on the surface of printed products, the waterproof, scratch-resistant, and ultraviolet-resistant performance can be effectively enhanced. With the upgrading of consumer market demand for the glossiness and delicate touch of printed product surfaces, the laminating process gradually develops towards high precision and high cleanliness, especially in the fields of food packaging and high-end gift boxes. The surface of the laminating layer without defects and impurity residues has become a core quality index. However, the traditional laminating equipment is prone to laminating defects caused by glue stains and residues during long-term operation, which restricts the improvement of product qualification rate.

[0003] The core process of the existing laminating and pressing device is that the film material is conveyed to the hot pressing area by the guide roller, and after being heated to a molten state by the heating roller, it is compounded with the printed substrate by the mechanical pressure of the silicone rubber pressing roller and the steel roller. Specifically, the hot melt adhesive film or liquid adhesive melts and flows under the action of the heating roller, and is linearly pressed by the silicone rubber roller and the steel roller, forcing the molten adhesive to uniformly distribute on the surface of the substrate. However, during the pressing process, the molten adhesive is prone to overflow from the edges of the film or seep into the gap between the pressing rollers through the pores on the roller surface. With the continuous operation of the equipment, the adhesive is repeatedly heated and carbonized on the roller surface, forming hard glue stain residues. Such residues not only reduce the smoothness of the pressing roller, causing indentations or bubbles on the surface of the subsequent laminated film, but also cause local temperature control failure due to uneven heat conduction on the roller surface, further exacerbating the vicious cycle of adhesive overflow and residue. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the problems of frequent laminating defects, high maintenance cost and limited production efficiency caused by glue stain residues of silicone rubber rollers and steel rollers, the present application provides a full-automatic laminating and pressing device for printed products.

[0005] The full-automatic laminating and pressing device for printed products provided by the present application adopts the following technical solution:

[0006] A full-automatic laminating and pressing device for printed products, comprising a printing machine, further comprising a silicone rubber roller and a steel roller, the upper part of the silicone rubber roller and the upper part of the steel roller are provided with scrapers for cleaning the roller surfaces, the printing machine is provided with a distance adjusting mechanism for driving the corresponding scraper to approach or move away from the silicone rubber roller or the steel roller, and is provided with an angle adjusting mechanism for adjusting the angle of the scraper, the distance adjusting mechanism and the angle adjusting mechanism are symmetrically provided with two groups about the two ends of the scraper.

[0007] By adopting the above technical scheme, the scraper symmetrically arranged above the silica gel roller and the steel roller cooperates with the distance adjusting mechanism and the angle adjusting mechanism to dynamically adjust the contact distance of the scraper and the roller body and the inclination angle of the scraper according to the roller surface wear state, so as to ensure that the scraper is always in constant pressure with the roller surface. This design can remove the molten glue and carbonized residues overflowing from the roller surface in real time, effectively prevent the glue stains from accumulating on the roller surface, and keep the roller surface smooth and flat. At the same time, the symmetrically arranged distance adjusting mechanism and angle adjusting mechanism avoid the roller body eccentric wear problem caused by unilateral pressure, prolong the service life of the roller, reduce the defects such as film surface indentation, bubbles and the like caused by glue stains, and greatly improve the yield.

[0008] Optionally, the distance adjusting mechanism comprises a driving member, a lead screw and a moving seat, the driving member is installed on the printing machine, the lead screw is coaxially fixed on the output end of the driving member, and the moving seat is threadedly sleeved on the lead screw, and the two moving seats are fixed on the two ends corresponding to the scraper.

[0009] By adopting the above technical scheme, the distance adjusting mechanism drives the lead screw to rotate by the driving member, and drives the moving seat to move along the lead screw in the axial direction, so as to accurately control the distance between the scraper and the roller surface. The lead screw transmission has high precision and self-locking characteristics, which can avoid manual adjustment errors and ensure uniform contact pressure between the scraper and the roller surface. This structure can automatically compensate for the size change of the roller surface due to thermal expansion or wear during equipment operation, significantly improve the glue stain removal rate, prevent the scraper from damaging the roller surface coating due to overpressure, and reduce the maintenance frequency and cost of the roller body.

[0010] Optionally, the angle adjusting mechanism comprises a mounting disc, a main gear and a plurality of slave gears, the mounting disc is fixedly connected with the moving seat, the slave gears are provided in multiple groups and are rotatably installed on the mounting disc, the main gear is coaxially fixed on the rotating shaft end of the scraper, and the main gear is meshed with each slave gear.

[0011] By adopting the above technical scheme, the angle adjusting mechanism converts the rotary motion of the driving member into the inclination angle adjustment of the scraper through the meshing transmission of the main gear and the plurality of slave gears. The multi-stage reduction design of the gear set can amplify the torque and improve the angle control accuracy, so as to ensure that the scraper blade always maintains the best fitting angle with the tangent direction of the roller surface. This design enhances the adaptability of the scraper to the concave-convex area of the roller surface, improves the glue stain peeling efficiency, and avoids the glue stain from being adhered to the roller surface again due to the scraper shaking, thereby further ensuring the stability of the cleaning effect.

[0012] Optionally, the printing machine is further provided with a suction mechanism for cleaning the stains at the front end of the scraper.

[0013] By adopting the technical scheme, the suction mechanism forms directional airflow in the working area at the front end of the scraper through negative pressure adsorption, and real-time suction of the scraped glue stains and dust is achieved. The design can prevent the accumulation of peeled glue stains near the blade edge or roller surface, and avoid the carbonization and sticking of the glue stains in high temperature environment. The suction mechanism and the cleaning action of the scraper are synchronous, which can significantly improve the continuous operation efficiency of the equipment, and reduce the labor cleaning intensity and safety hazards.

[0014] Optionally, the suction mechanism comprises a micro air suction pump and a suction pipe, the front end of the scraper is provided in a wedge shape, the scraper is internally provided with a cavity, the front end of the scraper is provided with a plurality of residue inlet holes in communication with the cavity, the micro air suction pump is installed on the printing machine, one end of the suction pipe is in communication with the micro air suction pump, and the other end of the suction pipe is in communication with the cavity of the scraper.

[0015] By adopting the technical scheme, the wedge-shaped design of the front end of the scraper and the internal cavity and residue inlet hole structure can guide the peeled glue stains along the inclined surface to the residue inlet hole, and quickly suck them to the external collection device through the negative pressure generated by the micro air suction pump. This structure seamlessly connects the glue stain removal and suction process, greatly improves the suction efficiency, and the communication design of the cavity and the suction pipe facilitates disassembly and cleaning, avoiding glue stain blockage of the pipeline.

[0016] Optionally, the front end and the rear end of the scraper are detachably arranged.

[0017] By adopting the technical scheme, the detachable design of the front end and the rear end of the scraper allows the worn blade edge part to be replaced separately, while the rear end support structure and adjustment structure are retained. This design reduces the maintenance cost of the scraper, and the quick-release interface greatly reduces the downtime. At the same time, the front end of the scraper can be adapted to different materials, and can flexibly meet the cleaning needs of various adhesives such as UV glue and water-based glue, thereby expanding the application range of the device.

[0018] In summary, the present application has at least one of the following beneficial technical effects:

[0019] The scraper symmetrically arranged above the silicone roller and the steel roller, in cooperation with the distance adjustment mechanism and the angle adjustment mechanism, can dynamically adjust the contact distance of the scraper and the roller body and the inclination angle of the scraper according to the wear state of the roller surface, so that the scraper is always in contact with the roller surface with constant pressure. This design can remove the molten glue liquid and carbonized residues overflowing from the roller surface in real time, effectively prevent the accumulation of glue stains on the roller surface, and keep the roller surface smooth and flat.

[0020] The symmetrically arranged distance adjustment mechanism and angle adjustment mechanism avoid the problem of one-sided pressure leading to uneven wear of the roller body, prolong the service life of the roller, reduce defects such as surface indentation and bubbles caused by glue stain residues, and greatly improve the yield;

[0021] The suction mechanism forms a directional air flow in the working area at the front end of the scraper through negative pressure adsorption, and real-time suction of the scraped glue stains and dust. This design can prevent the accumulation of peeled glue stains near the blade edge or roller surface, and avoid the carbonization and sticking of glue stains in high temperature environment. The suction mechanism operates synchronously with the cleaning action of the scraper, which can significantly improve the continuous operation efficiency of the equipment, and reduce the labor cleaning intensity and safety hazards;

[0022] The detachable design of the front end and the rear end of the scraper allows the replacement of the worn blade edge part alone, while retaining the rear end support structure and adjustment structure. This design reduces the maintenance cost of the scraper, and the quick-release interface greatly reduces the downtime. At the same time, it can adapt to different materials of the front end of the scraper, and flexibly cope with the cleaning needs of various adhesives such as UV glue and water-based glue, expanding the application range of the device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure schematic diagram of the full-automatic film laminating and pressing device for printed products in the embodiment of the present application;

[0024] Figure 2 is Figure 1 the overall structure schematic diagram of the full-automatic film laminating and pressing device for printed products in the embodiment of the present application from the back perspective;

[0025] Figure 3 is Figure 1 the structure schematic diagram of the scraper in the embodiment of the present application.

[0026] Reference signs: 1, printing machine; 11, silica gel roller; 12, steel roller; 2, scraper; 21, residue inlet; 3, distance adjustment mechanism; 31, driving piece; 32, lead screw; 33, moving seat; 4, angle adjustment mechanism; 41, mounting disc; 42, main gear; 43, driven gear; 5, suction mechanism; 51, micro air pump; 52, suction pipe. DETAILED DESCRIPTION

[0027] The following will be further described in combination with the Figures 1-3 application.

[0028] The embodiment of the present application discloses a full-automatic film laminating and pressing device for printed products.

[0029] The full-automatic film laminating and pressing device for printed products, referring to Figure 1 , Figure 2 and Figure 3, including the printing machine 1, further comprising silica gel roller 11 and steel roller 12, silica gel roller 11 and steel roller 12 are provided with scraper 2 for cleaning the two roller surfaces, scraper 2 is provided with distance adjusting mechanism 3 for driving corresponding scraper 2 to approach or away from silica gel roller 11 or steel roller 12, and angle adjusting mechanism 4 for adjusting the angle of scraper 2, distance adjusting mechanism 3 and angle adjusting mechanism 4 are symmetrically provided with two groups about both ends of scraper 2.

[0030] Symmetrically arranged scraper 2 above silica gel roller 11 and steel roller 12, cooperating with distance adjusting mechanism 3 and angle adjusting mechanism 4, can dynamically adjust the contact distance of scraper 2 and roller body and the inclination angle of scraper 2 according to the wear state of roller surface, to ensure that scraper 2 always fits the roller surface with constant pressure. This design can remove the molten glue and carbonized residues overflowing from the roller surface in real time, effectively prevent the glue from accumulating on the roller surface, and keep the roller surface smooth and flat. At the same time, the symmetrically arranged distance adjusting mechanism 3 and angle adjusting mechanism 4 avoid the problem of roller body eccentric wear caused by unilateral pressure, prolong the service life of the roller, reduce the defects such as surface indentation and bubbles caused by glue residue, and greatly improve the yield.

[0031] Referring to Figure 2 And Figure 3 , distance adjusting mechanism 3 includes driving part 31, screw rod 32 and moving seat 33, driving part 31 is installed on printing machine 1, screw rod 32 is coaxially fixed on the output end of driving part 31, moving seat 33 is threadedly sleeved on screw rod 32, and both moving seats 33 are fixed on both ends of corresponding scraper 2.

[0032] Distance adjusting mechanism 3 drives screw rod 32 to rotate by driving part 31, driving part 31 adopts servo motor, and in other embodiments, it can also adopt speed reducer motor, stepper motor, etc., to drive moving seat 33 to move axially along screw rod 32, so as to accurately control the distance between scraper 2 and roller surface. Screw rod 32 transmission has high precision and self-locking characteristics, which can avoid manual adjustment error and ensure that the contact pressure of scraper 2 and roller surface is uniform. This structure can automatically compensate the size change of roller surface caused by thermal expansion or wear during equipment operation, significantly improve the glue removal rate, prevent scraper 2 from overpressing the roller surface coating, and reduce the roller body maintenance frequency and cost.

[0033] Referring to Figure 2 And Figure 3 , angle adjusting mechanism 4 includes mounting disc 41, main gear 42 and slave gear 43, mounting disc 41 is fixedly connected with moving seat 33, a plurality of slave gears 43 are provided and are rotatably installed on mounting disc 41, and main gear 42 is coaxially fixed on the rotating shaft end of scraper 2, and main gear 42 is meshed with each slave gear 43.

[0034] The angle adjusting mechanism 4 converts the rotating motion of the driving member 31 into the inclination angle adjustment of the scraper 2 through the meshing transmission of the main gear 42 and the plurality of slave gears 43. The multi-stage reduction design of the gear set can amplify the torque and improve the angle control accuracy, ensuring that the blade edge of the scraper 2 always maintains the optimal fitting angle with the tangent direction of the roll surface. This design enhances the adaptability of the scraper 2 to the concave and convex areas of the roll surface, improves the efficiency of gum stripping, and avoids the gum sticking to the roll surface again due to the shaking of the scraper 2, further ensuring the stability of the cleaning effect.

[0035] The printing machine 1 is also provided with a suction mechanism 5 for cleaning the stains at the front end of the scraper 2. Referring to Figure 2 and Figure 3 , the suction mechanism 5 forms a directional airflow in the working area at the front end of the scraper 2 through negative pressure adsorption, and removes the stripped gum particles and dust in real time. This design can prevent the stripped gum from accumulating near the blade edge of the scraper 2 or the roll surface, and avoid the gum carbonization and re-sticking in high temperature environment. The suction mechanism 5 operates synchronously with the cleaning action of the scraper 2, which can significantly improve the continuous operation efficiency of the equipment, while reducing the labor cleaning intensity and safety hazards.

[0036] Referring to Figure 2 and Figure 3 , the suction mechanism 5 includes a micro air pump 51 and a suction pipe 52. The front end of the scraper 2 is wedge-shaped, the scraper 2 has a cavity inside, and the front end of the scraper 2 has a plurality of residue inlet holes 21 communicating with the cavity. The micro air pump 51 is installed on the printing machine 1, and the suction pipe 52 communicates with the micro air pump 51 at one end and communicates with the cavity of the scraper 2 at the other end.

[0037] The wedge-shaped design of the front end of the scraper 2 and the structure of the internal cavity and the residue inlet holes 21 can guide the stripped gum along the inclined surface to the residue inlet holes 21 and quickly suck it to the external collection device through the negative pressure generated by the micro air pump 51. This structure seamlessly connects the gum removal and suction process, greatly improves the suction efficiency, and the communication design of the cavity and the suction pipe 52 facilitates disassembly and cleaning, avoiding gum blockage of the pipeline.

[0038] The front end and the rear end of the scraper 2 are detachably arranged. The detachable structure is a common structure, which will not be described here. The detachable design of the front end and the rear end of the scraper 2 allows the worn blade edge to be replaced separately, while the rear end support structure and the adjusting structure are retained. This design reduces the maintenance cost of the scraper 2, and the quick-release interface greatly reduces the downtime. At the same time, the front end of the scraper 2 can be adapted to different materials, and can flexibly cope with the cleaning needs of various adhesives such as UV glue and water-based glue, expanding the application range of the device.

[0039] The implementation principle of the full-automatic film laminating and pressing device for printed products is as follows: the distance adjusting mechanism 3 drives the screw rod 32 to rotate by the driving member 31, drives the moving seat 33 to move along the axial direction of the screw rod 32, and thus the distance between the scraper 2 and the roller surface is accurately controlled. The screw rod 32 transmission has high precision and self-locking characteristics, can avoid manual adjustment errors, and ensures that the contact pressure of the scraper 2 and the roller surface is uniform. The structure can automatically compensate the size change of the roller surface due to thermal expansion or wear during equipment operation, significantly improves the glue stain removal rate, prevents the scraper 2 from damaging the roller surface coating due to overpressure, and reduces the roller body maintenance frequency and cost.

[0040] The angle adjusting mechanism 4 converts the rotary motion of the driving member 31 into the inclination angle adjustment of the scraper 2 by the meshing transmission of the main gear 42 and the plurality of gear 43. The gear set multi-stage reduction design can amplify the torque and improve the angle control accuracy, ensures that the blade edge of the scraper 2 and the tangent direction of the roller surface always maintain the optimal fitting angle. This design enhances the adaptability of the scraper 2 to the concave-convex area of the roller surface, improves the glue stain peeling efficiency, and the gear meshing has no reverse gap, avoids the glue stain from being secondarily adhered to the roller surface due to the shaking of the scraper 2, and further guarantees the stability of the cleaning effect.

[0041] The wedge surface design at the front end of the scraper 2 and the internal cavity and the residue inlet hole 21 structure can guide the peeled glue stain along the inclined surface to the residue inlet hole 21, and quickly suck it to the external collection device by the negative pressure generated by the micro vacuum pump 51. This structure seamlessly connects the glue stain removal and suction process, greatly improves the suction efficiency, and the communication design of the cavity and the suction pipe 52 facilitates disassembly and cleaning, avoids glue stain blockage of the pipeline.

[0042] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A full-automatic laminating and pressing device for printed products, comprising a printing machine (1), characterized in that: Also include silica gel roller (11) and steel roller (12), the silica gel roller (11) and the upper of the steel roller (12) are provided with scraper (2) for cleaning the roller surface, the printing machine (1) is provided with distance adjusting mechanism (3) for driving corresponding scraper (2) to close or away from the silica gel roller (11) or the steel roller (12), and angle adjusting mechanism (4) for adjusting the angle of scraper (2), the distance adjusting mechanism (3) and the angle adjusting mechanism (4) are symmetrically provided with two groups about both ends of the scraper (2).

2. The full-automatic laminating and pressing device for printed products according to claim 1, characterized in that: The distance adjusting mechanism (3) includes driving member (31), screw rod (32) and moving seat (33), the driving member (31) is installed on the printing machine (1), the screw rod (32) is coaxially fixed on the output end of the driving member (31), the moving seat (33) is threadedly sleeved on the screw rod (32), and both the moving seat (33) is fixed on both ends of the corresponding scraper (2).

3. The full-automatic laminating and pressing device for printed products according to claim 2, characterized in that: The angle adjusting mechanism (4) includes mounting disc (41), main gear (42) and pinion (43), the mounting disc (41) is fixedly connected with the moving seat (33), the pinion (43) is provided with a plurality of groups, and is rotatably installed on the mounting disc (41), the main gear (42) is coaxially fixed on the rotating shaft end of the scraper (2), and the main gear (42) is meshed with each pinion (43).

4. The full-automatic laminating and pressing device for printed products according to claim 1, characterized in that: The printing machine (1) is also provided with suction mechanism (5) for cleaning the stain on the front end of the scraper (2).

5. The full-automatic laminating and pressing device for printed products according to claim 4, characterized in that: The suction mechanism (5) includes micro air pump (51) and suction pipe (52), the front end of the scraper (2) is provided with a wedge surface, the scraper (2) is internally provided with a cavity, the front end of the scraper (2) is provided with a plurality of residue inlet holes (21) communicated with the cavity, the micro air pump (51) is installed on the printing machine (1), one end of the suction pipe (52) is communicated with the micro air pump (51), and the other end is communicated with the cavity of the scraper (2).

6. The full-automatic laminating and pressing device for printed products according to claim 5, characterized in that: The front end and the rear end of the scraper (2) can be detachably arranged.

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