A film laminating structure, film laminating device and film laminating method for paper products

Abstract

The present invention discloses a film laminating structure, a film laminating device and a film laminating method for paper products, relating to the technical field of film laminating. The technical solution is as follows: a border, which is provided corresponding to the printing area on the paper product and is in the structure of an annular frame. The area of the internal annular region is larger than the area of the printing area on the paper product, and the border is adhered to the paper product; a film, which is provided corresponding to the border and covers the border, being adhered to the frame of the border. The beneficial effect of the present invention is that through the film laminating structure of this solution, by combining the border and the film, local film laminating of the required film laminating position can be realized, and the border is used as the bonding piece between the paper product and the film, ensuring the stability of the local film laminating of the film on the paper product.

Description

Technical Field

[0001] The present invention relates to the field of laminating technology, and in particular to a paper product laminating structure, a laminating device and a laminating method. Background Art

[0002] Laminating paper products can play a very good protective role, especially for the fonts or patterns printed on paper products. Laminating can achieve a certain waterproof and wear-resistant effect. The current method of laminating paper products mainly uses cold pressing or hot pressing to attach the film to the paper product. However, the existing laminating method often uses the whole sheet of paper for laminating. The size of the film corresponds to the size of the paper product, and there is no related equipment for local lamination of paper products. For paper packaging boxes, corrugated paper is the most common carton material, but the current film materials and laminating technologies are not suitable for covering the film on corrugated paper in a local laminating manner. The film will fall off and separate because it is difficult to combine with the paper surface. This makes it difficult to implement local laminating technology for corrugated paper except for the use of overall lamination. Summary of the Invention

[0003] In view of one of the deficiencies of the prior art, the present invention provides a paper product laminating structure, a laminating device and a laminating method to solve the problem of partial laminating of corrugated paper products.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a paper product coating structure, comprising:

[0005] The frame is set corresponding to the printing area on the paper product and is a ring frame structure. The area of the inner ring area is larger than the area of the printing area on the paper product. The frame fits the paper product;

[0006] The film is arranged corresponding to the frame, covers the frame, and fits the frame body of the frame.

[0007] Preferably, the frame is a rectangular frame, and a plurality of annular grooves are respectively provided on the upper side and the lower side of the frame; and further comprising:

[0008] A plurality of pins are provided on the lower side of the frame when the frame is in use.

[0009] A paper product laminating device, comprising:

[0010] The feeding mechanism includes a feeding rack and a feeding assembly arranged on the feeding rack, and is used to transport paper products in a horizontal direction;

[0011] The pre-pressing mechanism includes a pre-pressing head corresponding to the frame to be pressed, and a pre-pressing cylinder driving the pre-pressing head to move toward or away from the feeding rack;

[0012] The pressing frame mechanism includes a pushing mechanism for pushing the frame, a pressing frame head and a pressing frame cylinder for pressing the frame downward towards the feeding rack;

[0013] The film pressing mechanism includes a film feeding component for conveying the film material, a film pressing head and a film pressing cylinder for pressing the film towards the feeding rack; an electric heating component is arranged on the film pressing head, and the film can be pressed on the frame by means of hot pressing.

[0014] Preferably, the lower side of the film pressing head of the film pressing mechanism is an annular body corresponding to the frame, and at least one notch is arranged on the annular body; it also includes

[0015] The double pressing mechanism includes a double pressing head and a double pressing cylinder for pressing downward towards the feeding rack, and an electric heating component is arranged on the double pressing head; the double pressing mechanism is used for double pressing the film on the frame, and the double pressing can press the notch position on the film pressing head.

[0016] Preferably, the double pressing head includes:

[0017] A double pressing frame corresponding to the notch of the film pressing head;

[0018] An exhaust head arranged in the double pressing frame corresponding to the hollow area inside the frame, and a spring is arranged on the upper side of the exhaust head.

[0019] Preferably, the whole frame is rectangular, and a rectangular hollow area is opened inside, and the hollow area corresponds to the printing area on the paper product;

[0020] The pre-pressing head corresponds to the frame, the four outer corners of the frame are right angles, and chamfers are arranged at the four outer corners of the pre-pressing head.

[0021] Preferably, the pushing mechanism includes:

[0022] A frame bin, which is a cylindrical structure with an open upper part and is used for placing the frames stacked longitudinally; a through groove is opened at the lower part of the frame bin and is arranged towards the pressing frame head; the pressing frame head and the pressing frame cylinder are arranged on one side of the frame bin;

[0023] A pushing cylinder is arranged on the other side of the frame bin, and a pushing piece corresponding to the frame is arranged on its movable end, and the pushing piece can push the lowermost frame in the frame bin to the lower side of the pressing frame head.

[0024] Preferably, the pushing mechanism further includes:

[0025] A heating piece is arranged on the lower side of the frame bin, and the heating piece can heat the lower side of the lowermost frame in the frame bin.

[0026] Preferably, it further includes:

[0027] The bearing pin is arranged at the lower part inside the box bin. The bearing pin is used to lift the frame inside the box bin from the lower side, and the bearing pin is in a long strip structure;

[0028] The pin body motor is linked with the bearing pin and can drive the bearing pin to rotate. When the bearing pin is in a horizontal state along its length direction, the frame at the lowermost end inside the box bin can contact the heating element. When the bearing pin is inclined or vertical, there is a gap between the bearing pin that lifts the frame in the bin and the heating element 314, and the distance of the gap is the length of the bearing pin.

[0029] A method for laminating paper products, comprising the steps:

[0030] S1. Perform pre-pressing on the paper product to form grooves corresponding to the frames;

[0031] S2. Press the frame downwards in the grooves formed in S1 to make the frame fit with the paper product;

[0032] S3. Press the film downwards on the frame in a hot pressing manner, and leave a notch on the frame without hot pressing when pressing;

[0033] S4. Press down the film in the inner area of the frame to exhaust air;

[0034] S5. Perform hot pressing on the notch reserved in S3 to complete film lamination.

[0035] Compared with the prior art, the following beneficial effects are achieved: Through the film lamination structure of this solution, combining the frame and the film, local film lamination of the required film lamination position can be realized, and the frame is used as the bonding part between the paper product and the film, ensuring the stability of the local film lamination of the film on the paper product.

[0036] The device of this solution realizes the continuous processing operation of the above film lamination structure. The pre-pressing, frame pressing, film pressing and re-pressing processes are respectively carried out on the paper product on the feeding mechanism to complete the local film lamination of the paper product. The device sequentially executes the above processes in the feeding direction of the same feeding mechanism, requires less space for the device, and can form a fast processing effect in a pipeline manner. Description of the Drawings

[0037] Figure 1 It is a schematic diagram of the frame structure of an embodiment of the present application;

[0038] Figure 2 It is a schematic diagram of the overall structure of the film laminating device of an embodiment of the present application;

[0039] Figure 3 It is Figure 2 The enlarged view of part A of;

[0040] Figure 4 It is a schematic diagram of the frame pressing mechanism structure of an embodiment of the present application;

[0041] Figure 5 Top view of the pressing frame mechanism according to an embodiment of the present application;

[0042] Figure 6 is Figure 5 C-C sectional view of;

[0043] Figure 7 is Figure 6 Partial enlarged view of D of;

[0044] Figure 8 Schematic diagram of the bearing pin structure according to an embodiment of the present application;

[0045] Figure 9 is Figure 2 Partial enlarged view of B of;

[0046] Figure 10 is Figure 9 Partial enlarged view of E of.

[0047] Figure 11 Schematic diagram of the double pressing mechanism according to an embodiment of the present application.

[0048] In the figure:

[0049] 100, frame; 1, feeding mechanism; 11, feeding rack; 12, feeding roller; 13, limiting member; 14, lifting mechanism; 141, pallet; 2, pre-pressing mechanism; 201, pre-pressing head; 202, pre-pressing cylinder; 3, pressing frame mechanism; 301, pressing frame head; 302, pressing frame cylinder; 31, pushing mechanism; 311, frame bin; 312, pushing cylinder; 313, pushing member; 314, heating member; 3141, linkage member; 315, bearing pin; 316, pin body motor; 32, pressing frame; 33, pushing table; 4, film pressing mechanism; 401, film pressing head; 402, film pressing cylinder; 41, film feeding assembly; 411, unwinding rack; 412, winding rack; 413, limiting frame group; 5, double pressing mechanism; 501, double pressing head; 5011, double pressing frame; 502, double pressing cylinder; 503, exhaust head. Specific embodiments

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Please refer to Figure 1 , the present application provides the following technical solutions:

[0052] A film laminating structure for paper products, including a frame 100. The frame 100 is arranged corresponding to the printing area on the paper product, and is a rectangular ring-shaped frame structure. The area of the inner ring area is larger than the area of the printing area on the paper product, and the frame 100 is adhered to the paper product. The inner area of the frame 100 is the printing area of the font or pattern on the paper product. In other words, the frame 100 is arranged outside the printing area of the corrugated paper. The frame 100 can be made of plastic material. By heating its surface, it is slightly melted, so as to adhere to the corrugated paper. A film is covered on the frame 100, and the film is adhered to the frame body of the frame 100 by hot pressing, so as to achieve the purpose of covering the film on the printing area of the corrugated paper.

[0053] On the basis of the above implementation scheme, a plurality of annular grooves are respectively provided on the upper side and the lower side of the frame body of the frame 100; a plurality of pins are provided on the lower side of the frame 100 in the use state. The pins are arranged on the lower sides of two parallel sides of the frame 100, and the pins are arranged in a linear array, and the lower ends of the pins are pointed. Intervals are respectively left between the pins and the inner edge and the outer edge of the frame 100. The interval between the pins and the inner edge of the frame 100 is the inner annular area, and the inner annular area is reserved as the heating area when the frame 100 is adhered to the corrugated paper. Considering that there will be a slight melting phenomenon when the frame is heated, a groove structure is set up to serve as a deformation buffer area during heating and melting, so as to avoid excessive deformation of the frame 100 during hot pressing. The pin structure can pierce into the corrugated paper when the lower side of the frame 100 is combined with the corrugated paper, so that the frame 100 and the corrugated paper are more firmly combined, and the length of the pin is less than the thickness of the corrugated paper.

[0054] On the basis of the above implementation scheme, a hot melt adhesive layer is provided on the lower side of the frame 100. Considering that the frame 100 and the corrugated paper can be combined by rapid heating, through the setting of the hot melt adhesive layer, as long as it is ensured that the hot melt adhesive layer melts, the frame 100 can be easily pasted on the corrugated paper.

[0055] On the basis of the above implementation scheme, the present scheme provides a method for laminating paper products, which is characterized in that it includes the steps:

[0056] S1. Perform pre-pressing on the paper product to form a groove corresponding to the frame 100;

[0057] S2. Press down the frame 100 in the groove formed in S1 to make the frame 100 adhere to the paper product;

[0058] S3. Press down the film on the frame 100 by hot pressing, and leave a notch on the frame 100 without hot pressing during pressing;

[0059] S4. Press down and exhaust the film in the inner area of the frame 100;

[0060] S5. Heat press the reserved notch in S3 to complete film laminating.

[0061] This method corresponds to the aforementioned film laminating structure. By performing the steps of this method for corrugated paper film laminating, first, grooves are formed on the corrugated paper surface through pre-pressing, facilitating the embedding of the frame 100 into the grooves, and avoiding excessive local thickness increase caused by the fitting of the frame 100 and the corrugated paper. Then, through the first heat press, the combination of the film and most areas of the frame 100 is achieved, thus ensuring that the overall area shape of the film corresponds to the film laminating area. By combining with the subsequent air exhaust step, the problem of film bulging caused by the possible presence of reserved air inside the film and the frame during their combination can be avoided.

[0062] Based on the above embodiments, refer to Figure 2 , this solution also provides a paper product film laminating device, including a feeding mechanism 1 for paper product transmission and feeding. The feeding mechanism 1 includes a feeding frame 11 and a feeding component arranged on the feeding frame 11, which can transmit the paper product in the horizontal direction. On the paper product feeding path formed above the feeding frame 11, a pre-pressing mechanism 2, a frame pressing mechanism 3, and a film pressing mechanism 4 are sequentially arranged from the feeding direction towards the discharging direction. The pre-pressing mechanism 2 includes a pre-pressing head 201 corresponding to the frame 100 to be pressed, and a pre-pressing cylinder 202 for driving the pre-pressing head 201 to move closer to or away from the feeding frame 11. The pre-pressing mechanism 2 corresponds to step S1 in the aforementioned film laminating method and can form grooves for the corresponding frame 100 on the corrugated paper. The frame pressing mechanism 3 includes a pushing mechanism 31 for pushing the frame 100, and a frame pressing head 301 and a frame pressing cylinder 302 for pressing the frame 100 towards the feeding frame 11. The frame pressing mechanism 3 corresponds to step S2 in the above film laminating method and is used to press the frame 100 into the grooves formed by the pre-pressing head 201. The film pressing mechanism 4 includes a film feeding component 41 for conveying the film material, and a film pressing head 401 and a film pressing cylinder 402 for pressing the film towards the feeding frame 11; an electric heating component is arranged on the film pressing head 401, and the film can be pressed on the frame 100 by heat pressing. The film pressing mechanism 4 corresponds to step S3 in the film laminating method and is used to achieve the first film pressing for the frame 100. In this embodiment, the film pressing head 401 of the film pressing mechanism 4 can also adopt a complete annular heat press corresponding to the frame 100 to directly complete the film pressing at one time. As a simplification of the process, steps S4 and S5 in the film pressing method are not executed. Especially in the case of small-area film pressing, the impact on the quality after film pressing is not significant.

[0063] Based on the above embodiments, the lower side of the film pressing head 401 of the film pressing mechanism 4 is an annular body corresponding to the frame 100, and at least one notch is provided on the annular body. This structure is provided corresponding to the notch setting without heating in step S3 of the aforementioned film covering method. This notch is used for subsequent exhaust. On this basis, a double pressing mechanism 5 is provided at the rear side of the film pressing mechanism 4. The double pressing mechanism 5 includes a double pressing head 501 for pressing downward in the direction of the feeding rack 11 and a double pressing cylinder 502. An electric heating component is provided on the double pressing head 501. The double pressing mechanism 5 is used for double pressing the film on the frame 100, and the double pressing can press down the notch position on the film pressing head 401.

[0064] The double pressing head 501 includes a double pressing frame 5011 and an exhaust head 503. As Figure 11 shown, the double pressing cylinder 502 is a vertically arranged cylinder, and its movable end is connected to the negative pressure head 501. The double pressing head 501 includes a double pressing connection block connected to the movable end of the double pressing cylinder 502. The double pressing frame 5011 and the exhaust head 503 are arranged below the double pressing connection block. The double pressing frame 5011 adopts an annular structure corresponding to the entire frame of the frame 100 and is heated by the electric heating component in the double pressing connection block. The double pressing frame 5011 can also be arranged only corresponding to the notch shape of the aforementioned film pressing head 401. However, in this embodiment, the double pressing frame 5011 adopting the entire annular body can, in addition to closing the aforementioned notch, also avoid the possibility of other positions of the frame 100 having notches during the aforementioned film pressing process.

[0065] A spring is arranged between the exhaust head 503 and the double pressing connection block. In the natural state of the spring, the lower end surface of the exhaust head 503 is located below the lower end surface of the double pressing frame 5011. When the double pressing cylinder 502 moves downward, first, the exhaust head 503 contacts the inner area of the frame 100, so as to press down the film on the frame 100 to achieve exhaust. Under the continuous movement of the double pressing cylinder 502, the exhaust head 503 compresses the spring, and the double pressing frame 5011 contacts the frame 100, thus completing steps S4 and S5 in the aforementioned film covering method.

[0066] Based on the above embodiments, refer to Figure 2 , the feeding rack 11 is a frame support structure, which can be arranged on one side of the conveyor belt and the conveyor roller group of the existing production equipment. The corrugated paper is conveyed by the conveyor belt, and is squeezed and conveyed by two conveyor rollers arranged up and down in the conveyor rollers and sent to the feeding rack 11.

[0067] The feeding component includes a feeding roller 12 and a limiting member 13. The feeding rollers 12 are linearly arranged on the feeding rack 11. The feeding roller 12 includes a rotating shaft and a rotating block. The rotating shaft is rotatably connected to the feeding rack 11. A driving mechanism is provided on the feeding rack 11 corresponding to the rotating shafts of the feeding rollers 12 for driving the rotating shafts of all the feeding rollers 12 to rotate synchronously. The rotating block is a circular block fixedly arranged on the feeding roller 12. A plurality of rotating blocks are distributed on the rotating shaft of each feeding roller 12, and the rotating blocks on adjacent two feeding rollers 12 are arranged in a staggered manner. Since this device is applied to the transmission of corrugated paper, the required power is not large, and only sufficient friction between the rotating block and the corrugated paper needs to be ensured. Through the setting of this solution, the feeding requirement for corrugated paper can be met, and the power demand is not high, which can save energy consumption.

[0068] The limiting member 13 includes a plurality of limiting sliding rails arranged on the feeding rack 11. The length direction of the limiting sliding rail is perpendicular to the feeding direction of the feeding rack 11. The limiting member 13 is distributed on both sides of the feeding direction of the feeding rack 11. A limiting block is slidably connected to the limiting sliding rail. By adjusting the position of the limiting block on the limiting sliding rail and fixing the limiting block, the limiting of the edge position of paper products of different sizes is achieved. Ensure that the traveling route of the paper product does not skew during the feeding process.

[0069] On the basis of the above implementation, see Figure 2 , a lifting mechanism 14 is further provided on the feeding rack 11. A plurality of lifting mechanisms 14 are provided, corresponding to each mechanism on the feeding rack 11 respectively, for providing a supporting force from bottom to top when the cylinder body in each mechanism presses down. Each lifting mechanism 14 includes a supporting plate 141 and a lifting cylinder. The lifting cylinder is a pneumatic cylinder, and its movable end is arranged upward. A supporting plate 141 is arranged at the movable end of the lifting cylinder. The supporting plate 141 is a horizontally arranged plate body. In this implementation, in order to ensure that the supporting force has sufficient strength, a lifting cylinder is respectively arranged at both ends of the lower side of each supporting plate 141.

[0070] On the basis of the above implementation, a plurality of portal frames are connected to the feeding rack 11. Horizontal sliding rails are arranged on the crossbars of the portal frames. The pre-pressing mechanism 2, the pressing frame mechanism 3, the film pressing mechanism 4 and the re-pressing mechanism 5 are respectively arranged on one portal frame and are slidably connected to the sliding rails thereon. Since it is considered that there are differences in the printing areas on different paper products and the positions of each mechanism need to be adjusted, the structure of this implementation is set.

[0071] On the basis of the above implementation, see Figure 1 and Figure 3 , the frame 100 is rectangular as a whole, and a rectangular hollow area is opened inside, and the hollow area corresponds to the printing area on the paper product; the four outer corners of the frame 100 are right angles.

[0072] The preloading mechanism 2 includes a preloading frame. One side of the preloading frame is slidably connected to the aforementioned gantry, and the cylinder block of the preloading cylinder 202 is fixedly arranged on the other side. The preloading head 201 corresponds to the frame 100, and chamfers are provided at the four outer corners of the preloading head 201.

[0073] Since the corrugated paper itself has certain elasticity, with the structure of this solution, when the preloading head 201 contacts the surface of the corrugated paper, although a downward pressing groove mark will be formed, because the preloading head 201 has a chamfer structure, it is not easy to cause damage to the surface layer of the corrugated paper at this time. Combining with the downward pressing of the frame pressing mechanism 3 on the frame 100, based on the formation of the preloading groove in the previous process, the four corners of the frame 100 are more likely to pierce the paper surface in the corner area of the groove in the previous process, and because this position is only pierced in the frame pressing link, the frame 100 and the paper surface can have better bonding property.

[0074] On the basis of the above implementation, see Figures 4 to Figure 7 The pushing mechanism 31 includes a frame bin 311. The frame bin 311 is in an overall rectangular tube shape with an upper opening for placing the longitudinally stacked frames 100. Multiple frames 100 can be longitudinally stacked and placed into the frame bin 311 by the staff. A through groove is provided at the lower part of the frame bin 311 and is arranged towards the frame pressing head 301; the frame pressing head 301 and the frame pressing cylinder 302 are arranged on one side of the frame bin 311; a pushing cylinder 312 is arranged on the other side of the frame bin 311, and a pushing member 313 corresponding to the frame 100 is arranged on the movable end of the pushing cylinder 312. The pushing member 313 can push the lowermost frame 100 in the frame bin 311 to the lower side of the frame pressing head 301. Each part in the frame pressing mechanism 3 is arranged on the frame pressing frame 32, and the frame pressing frame 32 is slidably connected to the gantry at its position. A connecting rod is arranged between the frame pressing frame 32 and the preloading frame, and the preloading mechanism 2 and the frame pressing mechanism 3 can be synchronously adjusted in position through the connecting rod.

[0075] The frame pressing cylinder 302 and the frame bin 311 are both arranged on the pressing frame 302. A pushing platform 33 is arranged below the frame bin 311. The pushing platform 33 and the frame bin 311 are arranged in a "丄" shape. The frame bin 311 is vertically arranged on the pushing platform 33. The pushing platform 33 is provided with a vertical through groove corresponding to the frame pressing cylinder 302 and the frame pressing head 301. When the corrugated paper to be coated passes through the pre-pressing mechanism 2 and advances to the bottom of the frame pressing mechanism 3, the lower side of the pushing platform 33 is slightly higher than the upper side of the corrugated paper. At this time, the feeding rack 11 stops working, the pushing cylinder 312 extends, and a frame 100 is pushed out of the frame bin 311 by the pushing member 313. The through groove on the lower side of the frame bin 311 is set to correspond to the height of the frame 100, that is, the distance from the lower end of the frame 100 to the upper end of the frame 100. When the pushing member 313 pushes the frame 100, the sidewall of the frame bin 311 itself blocks other frames 100 and makes them remain in the frame bin 311. And after the retraction of the pushing cylinder 312, the frame 100 in the frame bin 311 falls, waiting for the next push.

[0076] Regarding the frame pressing cylinder 302, when the pushing cylinder 312 pushes the frame 100 below the frame pressing head 301, the frame pressing cylinder 302 performs a downward pressing action, pressing the frame 100 into the pre-pressed groove formed in the corrugated paper. This completes the assembly of the frame 100 and the corrugated paper. The coordinated control of the various cylinder components in this device can be implemented using existing technologies combined with sensors and control systems, and will not be further described here.

[0077] On the basis of the above embodiment, a heating element 314 is provided on the lower side of the frame bin 311, and the heating element 314 can heat the lower side of the frame 100 at the lower end of the frame bin 311. The heating element 314 is a frame as a whole, which corresponds to the shape of the heating zone of the frame 100. When the frame 100 falls onto the heating element 314, the heating element 314 holds up the heating zone of the frame 100 without contacting the pins. The pins 100 are arranged at the upper and lower edges of the frame 100 in the state corresponding to the top view of the frame pressing mechanism 3. The heating element 314 forms a ring-shaped heating structure corresponding to the frame 100. In the case of this setting, considering the simplification of the structure, even if the heating element 314 remains in a fixed position, it only needs to meet the thickness of the pushing element 313 and the structure of the frame part of the frame 100, and it will not affect the pushing work of the frame 100. The heating element 314 is made of a metal structure, which can be heated by an electric heating component.

[0078] Based on the above embodiment, a receiving groove is provided on the pushing platform 33 corresponding to the heating element 314, and the heating element 314 is connected to a lifting element, which can be a cylinder. When the pushing element 313 performs the pushing action, the heating element 314 retracts into the receiving groove. Considering that the frame portion of the frame 100 is relatively thin, in order to have a sufficiently stable pushing cylinder force, the thickness of the pushing element 313 can be set to the thickness of the frame 100 and the length of the frame portion plus the insertion rod. This is more conducive to the pushing of the pushing element 313. However, in this case, the heating element 314 may hinder the pushing, so the lifting element is provided to avoid this problem.

[0079] Based on the above embodiment, the lifting member on the lower side of the heating element 314 is a spring. In the natural state of the spring, the heating element 314 can lift the frame 100 groups inside the frame bin 311. A linkage member 3141 is provided on the side of the heating element 314 facing the pushing member 313. The linkage member 3141 is fixedly connected to the heating element 314, and its side facing the pushing member 313 is provided with an inclined surface. When the pushing member 313 starts to move, the pushing member 313 contacts the inclined surface of the linkage member 3141, causing the linkage member 3141 to move downward and sink into the receiving groove, thereby driving the heating element 314 to descend synchronously.

[0080] On the basis of the above embodiment, considering that the spring is used as the bearing structure of the heating element 314 in the above embodiment, the spring may be deformed under long-term operation, causing the frame 100 in the frame compartment 311 to press the heating element 314 too much. Therefore, a bearing pin 315 is provided at the lower inner part of the frame compartment 311, such as Figure 8As shown, the carrier pin 315 is a strip-shaped structure for lifting the frame 100 in the frame bin 311 from the lower side. A pin body motor 316 is arranged on the outer side of the lower part of the frame bin 311. The pin body motor 316 is linked with the carrier pin 315 and can drive the carrier pin 315 to rotate. The part of the carrier pin 315 extending to the outer side of the pin of the lower side of the frame 100 in the frame bin 311 provides a supporting force. The pusher 313 is smaller than the width of the frame 100 and can avoid the carrier pin 315. When the carrier pin 315 is in a horizontal state in its length direction, the edge of the lowermost frame 100 inside the frame bin 311 contacts the carrier pin 315, and the internal heating area contacts the heating element 314, ensuring that the heating element 314 melts the frame 100. When the device stops working, since the heating element 314 will not cool down instantly and there may be residues on the frame 100 inside the frame bin 311. In this case, the heating element 314 may cause overheating due to continuous heating of this frame 100, on the one hand, causing damage to this frame 100, and on the other hand, possibly affecting subsequent production due to the deformation of the frame 100. Therefore, when the equipment stops working, the pin body motor 316 drives the carrier pin 315 to rotate. When the carrier pin 315 rotates to a vertical state, the lifted frame 100 on it is moved away from the heating element 314 to the greatest extent, thus avoiding the above problems.

[0081] Based on the above embodiments, refer to Figure 9 and Figure 10 , the film supply mechanism 4 is provided with a film supply rack, and the film supply rack is slidably connected to its corresponding portal frame. The film supply assembly 41 includes a unwind rack 411 and a wind-up rack 412. The unwind rack 411 and the wind-up rack 412 are both arranged on the film supply rack. The unwind rack 411 is used for placing the film coil, and the wind-up rack 412 is used for collecting the waste after film pressing. The film supply assembly 411 further includes a plurality of guide rollers. The guide rollers are all rotatably connected to the film supply rack and are used for guiding the film material. The unwinding, winding and guiding of the film coil can adopt the existing technology and will not be elaborated here. A limiting frame group 413 is arranged on the working path of the film pressing head 401. The limiting frame group 413 corresponds to the shape of the frame 100 and is an annular frame body. The limiting frame group 413 includes an upper limiting frame and a lower limiting frame arranged up and down. When the film material is supplied, it is made to pass through between the two. Since the film itself is a flexible material, when the film pressing head 401 cuts it from the coil by heating, the limiting frame group 413 is combined to reduce the deformation of the film itself caused by heat, and to a certain extent improve the continuity of the waste at the edge of the film coil, ensuring that the equipment can continuously process and produce.

[0082] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A paper product laminating device, characterized in that: include: A feeding mechanism (1) comprises a feeding rack (11) and a feeding assembly arranged on the feeding rack (11), and is used for conveying paper products in a horizontal direction; A pre-pressing mechanism (2) comprising a pre-pressing head (201) corresponding to the frame (100) to be pressed, and a pre-pressing cylinder (202) for driving the pre-pressing head (201) to move toward or away from the feeding rack (11); A frame pressing mechanism (3) comprising a pushing mechanism (31) for pushing the frame (100), and a frame pressing head (301) and a frame pressing cylinder (302) for pressing the frame (100) downward in the direction of the feeding rack (11); The film pressing mechanism (4) includes a film supply assembly (41) for conveying film material, and a film pressing head (401) and a film pressing cylinder (402) for pressing the film toward the material supply rack (11); the film pressing head (401) is provided with an electric heating assembly, which can press the film onto the frame (100) by heat pressing; The pushing mechanism (31) comprises: The frame bin (311) is a cylindrical structure with an upper opening, and is used to place the longitudinally stacked frames (100); a through slot is provided at the lower portion of the frame bin (311) and is arranged toward the frame pressing head (301); the frame pressing head (301) and the frame pressing cylinder (302) are arranged on one side of the frame bin (311); A pushing cylinder (312) is provided on the other side of the frame bin (311), and a pushing member (313) corresponding to the frame (100) is provided on its movable end. The pushing member (313) can push the lowermost frame (100) in the frame bin (311) to the lower side of the frame pressing head (301); The pushing mechanism (31) further includes: A heating element (314) is provided on the lower side of the frame bin (311), and the heating element (314) can heat the lower side of the frame (100) at the lowermost end of the frame bin (311); Also includes: A bearing pin (315) is provided at the lower inner portion of the frame bin (311), the bearing pin (315) being used to lift the frame (100) in the frame bin (311) from the lower side, and the bearing pin (315) is a long strip structure; The pin body motor (316) is linked with the supporting pin (315) to drive the supporting pin (315) to rotate. When the supporting pin (315) is in a horizontal state along its length direction, the frame (100) at the lower end of the frame bin (311) can contact the heating element (314). When the supporting pin (315) is tilted or vertical, the supporting pin (315) lifts the frame (100) in the silo (311) to leave a gap between the frame and the heating element (314), and the distance of the gap is the length of the supporting pin (315).

2. The paper product laminating device according to claim 1, wherein: The lower side of the film pressing head (401) of the film pressing mechanism (4) is an annular body corresponding to the frame (100), and at least one notch is provided on the annular body; The re-pressing mechanism (5) comprises a re-pressing head (501) and a re-pressing cylinder (502) for pressing downward in the direction of the feeding rack (11), wherein the re-pressing head (501) is provided with an electric heating component; the re-pressing mechanism (5) is used for performing secondary film pressing on the film on the frame (100), and the secondary film pressing can press downward on the notch position on the film pressing head (401).

3. The paper product laminating device according to claim 2, wherein: The re-pressing head (501) comprises: A re-pressing frame (5011) is provided corresponding to the notch of the film pressing head (401); The exhaust head (503) is arranged in the re-pressing frame (5011), corresponding to the hollow area inside the frame (100), and a spring is arranged on the upper side of the exhaust head (503).

4. The paper product laminating device according to claim 1, wherein: The frame (100) is rectangular in shape as a whole, and has a rectangular hollow area inside, the hollow area corresponding to the printed area on the paper product; The pre-pressing head (201) corresponds to the frame (100), the four outer corners of the frame (100) are right angles, and the four outer corners of the pre-pressing head (201) are provided with chamfers.

5. A method for laminating a paper product, characterized in that: The paper product laminating device according to any one of claims 1 to 4 comprises the following steps: S1, pre-pressing the paper product to form a groove corresponding to the frame (100); S2, pressing the frame (100) downward in the groove formed in S1, so that the frame (100) is fitted onto the paper product; S3, pressing the film on the frame (100) by hot pressing, leaving a gap on the frame (100) without hot pressing; S4, pressing down the film in the inner area of the frame (100) to exhaust air; S5. Hot pressing is performed on the notch reserved in S3 to complete the lamination.

6. A paper product coating structure, characterized in that: The method for laminating a paper product according to claim 5 comprises: The frame (100) is provided corresponding to the printing area on the paper product and is a ring-shaped frame structure, wherein the area of the inner ring-shaped area is larger than the area of the printing area on the paper product, and the frame (100) is in contact with the paper product; The film is arranged corresponding to the frame, covers the frame, and fits the frame body of the frame (100).

7. The paper product coating structure according to claim 6, wherein the frame (100) is a rectangular frame, and a plurality of annular grooves are respectively provided on the upper side and the lower side of the frame (100); and further comprising: A plurality of pins are provided on the lower side of the frame (100) when in use.

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