An advertising film with strong weather resistance, its forming device and method

Abstract

The present invention relates to the technical field of advertising film production, specifically a weather-resistant advertising film and its forming device and method. The advertising film of the present invention includes a PP synthetic paper, a PET film, and a release paper arranged in sequence from top to bottom. An adhesive layer is provided between the PP synthetic paper and the PET film, and a glue layer is provided between the PET film and the release paper, which enables the advertising film to have the characteristics of non-shrinking, non-warping, no residual glue on the lower part, and can be torn off as a whole. The forming device of the present invention is a U-shaped frame. At the top of the U-shaped frame, three unwinding mechanisms for unwinding the PP synthetic paper, the PET film, and the release paper are sequentially arranged from left to right. Three guide rollers are rotatably installed inside the U-shaped frame, and an intermittent discharging part is provided inside the U-shaped frame, which can achieve the bonding between the corresponding fabrics while unwinding the PP synthetic paper, the PET film, and the release paper, achieving one-step forming.

Description

Technical Field

[0001] The invention relates to the technical field of advertising film production, in particular to an advertising film with strong weather resistance and a forming device and method thereof. Background Art

[0002] At present, there are two main types of films used in the market for indoor and outdoor advertising print media. One is the printable PVC car body film, and the other is the coated printable PP synthetic paper film.

[0003] The prior art discloses a Chinese patent with publication number CN 114591693 B: a method for preparing a waterproof advertising film, and discloses a substrate layer, a release layer and a backing layer coated therebetween to ensure stable bonding.

[0004] The prior art also discloses a Chinese patent with publication number CN 114347455 B: an integrated device for glass window advertising film, and discloses a scraper assembly, a blowing assembly and a brush body assembly. The scraper assembly and the blowing assembly are used to scrape and blow air on the sticker surface of the advertising film. At the same time, the brush body assembly is used to evenly brush the water on the surface of the glass window, and watermarks generated by excessive water spraying during the brushing process are removed.

[0005] However, the above-mentioned existing film laminating equipment still has certain defects, that is, during use, the water spraying and the film unwinding are not controlled in a linked manner, which easily leads to excessive water spraying locally, thus affecting the film laminating process;

[0006] In addition, the above-mentioned existing advertising films are prone to leave glue and PP bottom film layer on the sticker when they are rolled out, which is not easy to clean. Summary of the invention

[0007] The object of the present invention is to provide an advertising film with strong weather resistance and a forming device and method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A highly weather-resistant advertising film comprises PP synthetic paper, PET film and release paper which are arranged in sequence from top to bottom, an adhesive layer for bonding the PP synthetic paper and the PET film is provided between the PP synthetic paper and the PET film, a glue layer for bonding the PET film and the release paper is provided between the PET film and the release paper, and a coating suitable for inkjet printing and ink absorption is coated on the surface of the PP synthetic paper.

[0010] The present invention also provides a forming device for sequentially bonding a PP synthetic paper, a PET film, and a release paper for the above-mentioned weather-resistant advertising film. The forming device includes a U-shaped frame. At the top of the U-shaped frame, three unwinding mechanisms for unwinding the PP synthetic paper, the PET film, and the release paper are sequentially arranged from left to right. Inside the U-shaped frame, three guide rollers are rotatably installed and are distributed in a staggered manner with respect to the corresponding unwinding mechanisms.

[0011] At the positions corresponding to the spaces between adjacent two of the three guide rollers inside the U-shaped frame, intermittent discharging parts for intermittently pouring materials are provided. At the bottom of the U-shaped frame, feeding parts corresponding to the two intermittent discharging parts one by one are provided. On one side of the two intermittent discharging parts inside the U-shaped frame, scraping roller are provided. And at the positions corresponding to the two intermittent discharging parts inside the U-shaped frame, side frames are provided. At both ends of the two scraping rollers, round rods are fixedly provided and movably penetrate through the U-shaped frame.

[0012] In a preferred embodiment, the unwinding mechanism includes two U-shaped plates fixedly arranged on the outer side of the U-shaped frame and U-shaped grooves opened at the top of the U-shaped frame corresponding to the two U-shaped plates. At the central positions inside the two U-shaped plates, mandrels are rotatably installed. At the middle parts of the opposite ends of the two mandrels, strip grooves are opened.

[0013] Between the two mandrels, a roller shaft is provided. At both ends of the roller shaft, strip plates are fixedly provided and movably inserted into the corresponding strip grooves. The PP synthetic paper, the PET film, and the release paper are respectively wound around the outer sides of the three roller shafts.

[0014] In a preferred embodiment, the side frame includes two side plates fixed to the inside of the U-shaped frame. Between the opposite sides of one ends of the two side plates, a first triangular inclined bar is fixedly connected. At the position corresponding to the first triangular inclined bar on the outer side of one of the side plates, a baffle is fixedly provided. On one side of the baffle, a second triangular inclined bar is fixedly provided. A sunken groove is opened at the bottom of the first triangular inclined bar.

[0015] In a preferred embodiment, the feeding part includes a material box fixedly installed at the bottom of the U-shaped frame. At both ends of the bottom of the material box, peristaltic pumps are fixedly installed. A feed pipe is communicated between the liquid inlet end of the peristaltic pump and the material box. A discharge pipe is communicated with the liquid outlet end of the peristaltic pump.

[0016] The feeding part further includes leakage grooves penetrating through both ends of the bottom of the U-shaped frame. The sizes of the two leakage grooves are equal to the sizes of the cavities formed between the two side plates at the corresponding ends.

[0017] In a preferred embodiment, the intermittent discharging part includes a cloth ring cylinder rotatably installed in a penetrating manner between the two side frames. At both ends of the cloth ring cylinder, conveying pipes penetrating through the U-shaped frame are communicated. The conveying pipes are communicated with the corresponding discharge pipes, and the conveying pipes are rotatably installed with respect to the cloth ring cylinder.

[0018] A notch is formed at a position on the outer side of the fabric loop cylinder between the two side frames, and an electric heating plate is fixedly sleeved at a position on the outer side of the fabric loop cylinder between the two side frames. A power assembly for driving the fabric loop cylinder to rotate reciprocally is installed inside the U-shaped frame.

[0019] In a preferred embodiment, the power assembly includes gears fixed at both ends of the outer side of the fabric loop cylinder, cross bars fixed on both sides of the inner cavity of the U-shaped frame, and straight plates arranged obliquely. A swing tooth plate meshing with the corresponding gear is rotatably installed on the outer side of the cross bar, and an arc spring is fixedly connected between the swing tooth plate and the corresponding straight plate;

[0020] The power assembly further includes two groups of convex plates fixed on the corresponding unwinding mechanism, two in each group. The gears, swing tooth plates, and convex plates on the same side are arranged vertically in the same plane.

[0021] In a preferred embodiment, a anti-loosening mechanism for preventing the roller shaft from jumping off is installed at the top of the U-shaped frame corresponding to each U-shaped groove. The anti-loosening mechanism includes vertical frames and U-shaped frames respectively fixed on both sides of the corresponding U-shaped groove. A swing seat is hingedly installed in the middle of the vertical frame, and a top pressing arc block extending into the corresponding U-shaped groove is fixedly arranged at the bottom of the swing seat;

[0022] A T-shaped groove is formed at the top of one end of the swing seat close to the U-shaped frame. A T-shaped block is slidably installed in the T-shaped groove. A straight spring is fixedly connected between one end of the T-shaped block located inside the T-shaped groove and the inner side of the T-shaped groove. One end of the T-shaped block extending outside the T-shaped groove is fixedly provided with an insertion plate movably inserted into the corresponding U-shaped frame, and an L-shaped lever is fixedly connected to one end of the top of the T-shaped block.

[0023] In a preferred embodiment, a clamping mechanism is installed at the outer side of the U-shaped frame corresponding to the two scraper rollers. The clamping mechanism includes a disc located at the outer side of the U-shaped frame. The disc is fixedly connected to the end of a round rod. A clamping groove is formed in the middle of one end of the disc, and a plurality of convex columns are formed on the outer side of the disc;

[0024] The clamping mechanism further includes two ear plates fixed on the outer side of the U-shaped frame corresponding to the scraper rollers. A buckle strip is hingedly installed between the two ear plates, and the buckle strip is movably clamped inside the corresponding clamping groove.

[0025] The present invention also provides a method for producing and forming the aforementioned weather-resistant advertising film by using the forming device for the weather-resistant advertising film. The specific operation steps are as follows:

[0026] S1. Material preparation: Install three roller shafts wound with PP synthetic paper, PET film, and release paper on three groups of unwinding mechanisms in sequence, and inject the removable glue for bonding the PET film and the release paper and the adhesive for bonding the PP synthetic paper and the PET film into the two material boxes respectively;

[0027] S2. Adhesion: ① Unroll the PET film and the release paper. Use the convex plate rotating with the mandrel to intermittently push the corresponding swinging tooth plate to swing, so as to drive the gear to drive the corresponding fabric cylinder to rotate 180°, turn the notch from upward to downward, pour the removable glue supplied by the feeding part into the fabric cylinder onto the release paper, and as the unrolling process progresses, use the scraper roller at the corresponding position to press the PET film against the release paper for adhesion;

[0028] ② Unroll the PP synthetic paper and the PET film. Use the convex plate rotating with the mandrel to intermittently push the corresponding swinging tooth plate to swing, so as to drive the gear to drive the corresponding fabric cylinder to rotate 180°, turn the notch from upward to downward, pour the adhesive supplied by the feeding part into the fabric cylinder onto the PET film, and as the unrolling process progresses, use the scraper roller at the corresponding position to press the PP synthetic paper against the PET film for adhesion;

[0029] S3. Coating the coating: Perform coating processing on the surface of the PP synthetic paper on the surface of the adhered advertising film to enable it to achieve the function of adsorbing inkjet printing ink.

[0030] Advantages of the present invention:

[0031] 1. During the use of the advertising film of the present invention, the glue adheres firmly, does not shrink, does not curl at the edges, and there is no residual glue when removing, and it can be torn off as a whole, improving the efficiency of removing;

[0032] 2. The present invention can realize continuous adhesion between the PET film and the release paper and between the PP synthetic paper and the PET film synchronously while continuously unrolling the PP synthetic paper, the PET film and the release paper, achieving one-step in place and improving the adhesion efficiency;

[0033] 3. By setting the side frame, the present invention can effectively prevent the poured and scraped removable glue or adhesive overflowing during the adhesion process from flowing to the side of the corresponding release paper or PET film, thereby affecting the aesthetics of the product;

[0034] 4. By the combined use of the unrolling mechanism and the anti-loosening mechanism, the present invention can realize quick installation and fixation of the roller shaft, and it is also convenient to replace. Description of the drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts;

[0036] Figure 1 It is a schematic structural diagram of the advertising film of the present invention;

[0037] Figure 2 is the overall structural schematic diagram of the forming device of the present invention from the first perspective;

[0038] Figure 3 is the overall structural schematic diagram of the forming device of the present invention from the second perspective;

[0039] Figure 4 is the overall top view of the forming device of the present invention;

[0040] Figure 5 is the present invention Figure 4 the schematic cross-sectional structure diagram taken along the A-A direction in;

[0041] Figure 6 is the present invention Figure 4 the schematic cross-sectional structure diagram taken along the B-B direction in;

[0042] Figure 7 is the partial structural schematic diagram of the unwinding mechanism of the forming device of the present invention;

[0043] Figure 8 is the structural schematic diagram of the anti-loosening mechanism of the forming device of the present invention;

[0044] Figure 9 is the exploded schematic diagram of the fabric loop cylinder and the electric heating plate of the forming device of the present invention;

[0045] Figure 10 is the overall structural schematic diagram of the side frame of the forming device of the present invention;

[0046] Figure 11 is the schematic cross-sectional structure diagram of the side frame of the forming device of the present invention;

[0047] Figure 12 is the structural schematic diagram of the clamping mechanism of the forming device of the present invention.

[0048] The reference numerals in the figures are as follows: 1, PP synthetic paper; 2, PET film; 3, release paper; 4, coating; 5, adhesive layer; 6, glue layer; 7, U-shaped frame; 8, unwinding mechanism; 81, U-shaped plate; 82, mandrel; 83, strip groove; 84, roller shaft; 85, U-shaped groove; 9, anti-loosening mechanism; 91, vertical frame; 92, U-shaped frame; 93, swing seat; 94, tightening arc block; 95, T-shaped groove; 96, T-shaped block; 97, straight spring; 98, insertion plate; 99, L-shaped lever; 10, guide roller; 11, scraping roller; 12, feeding section; 121, material box; 122, peristaltic pump; 123, feed pipe; 124, discharge pipe; 13, intermittent discharging section; 131, fabric loop cylinder; 132, electric heating plate; 133, conveying pipe; 134, gear; 135, cross bar; 136, swinging toothed plate; 137, convex plate; 138, straight plate; 139, arc spring; 1310, notch; 14, positioning mechanism; 141, ear plate; 142, disc; 143, card slot; 144, convex column; 145, fastening strip; 15, side frame; 151, side plate; 152, triangular inclined strip 1; 153, baffle; 154, triangular inclined strip 2; 155, sinking groove. Specific embodiments

[0049] Next, the technical solutions in the embodiments of the present invention 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 making creative efforts belong to the scope of protection of the present invention.

[0050] The advertising film of the present invention belongs to a kind of new material industry and is widely used in the field of advertising decoration. The advertising film forming device is one of the devices for producing advertising films, and is used for continuously compounding and forming the PP synthetic paper, adhesive, PET film, removable glue and release paper that make up the advertising film.

[0051] Refer to the attached drawings of the specification Figure 1, A weather-resistant advertising film according to an embodiment of the present invention includes a PP synthetic paper 1, a PET film 2, and a release paper 3 arranged in sequence from top to bottom. Among them, the PP synthetic paper 1 is a weather-resistant PP synthetic paper in the prior art, with a thickness of 48-140 μm. The thickness of the PET film 2 is 12-125 μm, and it can be transparent, black, gray, blue, white, etc. The thickness of the release paper 3 is 12-200 μm, and single-sided or double-sided coated papers such as double-sided offset paper, copperplate paper, CCK paper (kaolin-coated kraft paper), and glassine kraft paper can be selected. Moreover, the release paper 3 can also be replaced by a release film with the same thickness. The release film can be a transparent, dull, blue, milky white, etc. color film. A binder layer 5 for bonding the PP synthetic paper 1 and the PET film 2 is provided between the PP synthetic paper 1 and the PET film 2, and an adhesive layer 6 for bonding the PET film 2 and the release paper 3 is provided between the PET film 2 and the release paper 3. A coating 4 suitable for inkjet printing and ink absorption is coated on the surface of the PP synthetic paper 1, and this coating 4 has two types: water-based and weak solvent.

[0052] It should be noted that in the present invention, the PP synthetic paper 1 coated with the coating 4 that can adsorb inkjet printing ink is compounded with the PET film 2 to serve as the surface layer of the advertising film, and it is bonded with the release paper 3 coated with removable glue to form the final product. This can not only improve the problem of weak glue adhesion, but also avoid problems such as glue remaining when tearing off the advertising paper backboard and shrinkage and warping of the advertising paper.

[0053] Example 1: Refer to the attached drawings of the specification Figures 2 - 3 , A forming device for a weather-resistant advertising film according to an embodiment of the present invention includes a U-shaped frame 7. At the top of the U-shaped frame 7, three unwinding mechanisms 8 for unwinding the PP synthetic paper 1, the PET film 2, and the release paper 3 are sequentially arranged from left to right. Inside the U-shaped frame 7, three guide rollers 10 are rotatably installed and are distributed in a staggered manner with respect to the corresponding unwinding mechanisms 8;

[0054] At the positions corresponding to the adjacent two guide rollers 10 inside the U-shaped frame 7, intermittent discharging parts 13 for intermittently pouring materials are provided. At the bottom of the U-shaped frame 7, a feeding part 12 corresponding to the two intermittent discharging parts 13 one by one is provided. On one side of the two intermittent discharging parts 13 inside the U-shaped frame 7, scraper rollers 11 are provided, and at the positions corresponding to the two intermittent discharging parts 13 inside the U-shaped frame 7, side frames 15 are provided. Round rods that movably penetrate the U-shaped frame 7 are fixedly provided at both ends of the two scraper rollers 11.

[0055] It should be noted that in the present invention, three unwinding mechanisms 8 are used to continuously unwind the PP synthetic paper 1, the PET film 2, and the release paper 3 respectively. While unwinding, two intermittent discharging parts 13 are driven to pour the removable glue and the adhesive onto the surfaces of the release paper 3 and the PET film 2 respectively. Then, with the help of two doctor rollers 11, the adhesion between the PET film 2 and the release paper 3, and between the PP synthetic paper 1 and the PET film 2 is completed respectively, realizing the continuous and synchronous adhesion between the PET film 2 and the release paper 3, and between the PP synthetic paper 1 and the PET film 2, thus improving the adhesion efficiency.

[0056] Specifically, as Figure 2 and Figures 4 - 7 shown, the unwinding mechanism 8 includes two U-shaped plates 81 fixedly arranged on the outer side of the U-shaped frame 7 and a U-shaped groove 85 opened at the top of the U-shaped frame 7 corresponding to the two U-shaped plates 81. At the central positions inside the two U-shaped plates 81, mandrels 82 are rotatably installed. A driving motor for driving the corresponding mandrel 82 to rotate is installed on one of the U-shaped plates 81. At the middle parts of the opposite ends of the two mandrels 82, strip grooves 83 are opened. Between the two mandrels 82, there is a roller shaft 84. At both ends of the roller shaft 84, strip plates are fixedly arranged and are movably inserted into the corresponding strip grooves 83. Among them, the mandrel 82 and the roller shaft 84 are both concentric with the arc section of the U-shaped groove 85. One end of the mandrel 82 with the strip groove 83 opened passes through the corresponding U-shaped groove 85 and extends to the inside of the U-shaped frame 7, and the end of the strip groove 83 far from the corresponding roller shaft 84 is located inside the U-shaped groove 85, so that after the strip plate is inserted into the corresponding strip groove 83, the U-shaped groove 85 can be used to lift the roller shaft 84. The PP synthetic paper 1, the PET film 2, and the release paper 3 are respectively wound around the outer sides of the three roller shafts 84.

[0057] It should be noted that during the installation of the roller shaft 84, the strip plates at both ends of the roller shaft wound with the PP synthetic paper 1, the PET film 2, and the release paper 3 are respectively placed between the two mandrels 82 on the corresponding unwinding mechanism 8. The strip plates on the roller shaft 84 are supported by the corresponding U-shaped grooves 85. Then, the driving motor is used to drive the mandrel 82 to rotate, thereby driving the corresponding roller shaft 84 to rotate for unwinding. The design of this unwinding mechanism 8 can facilitate the quick replacement of the roller shaft 84.

[0058] Specifically, as Figure 6 and Figures 10 - 11As shown in the figure, the side frame 15 includes two side plates 151 fixed to the inner side of the U-shaped frame 7. A triangular strip 152 for guiding the overflowed removable glue or adhesive during the flattening process by the scraping roller 11 to flow back is fixedly connected between the opposite sides of one ends of the two side plates 151. A baffle 153 is fixedly arranged at the position corresponding to the triangular strip 152 on the outer side of one of the side plates 151. A triangular strip 154 is fixedly arranged on one side of the baffle 153. Among them, the baffle 153 can cooperate with the corresponding triangular strip 154 to block the poured removable glue or adhesive to prevent overflow. A sunken groove 155 is formed at the bottom of the triangular strip 152. The setting of the sunken groove 155 can make the bottom end of the inclined side of the triangular strip 152 in a V-shaped structure to prevent the overflowed and refluxed removable glue or adhesive from accumulating on the bottom end surface of the triangular strip 152.

[0059] It should be noted that the top end of the triangular strip 152 on the side frame 15 located at the left end (refer to Figure 6 ) is flush with the upper surface of the release paper 3, and the lower end surface of the triangular strip 154 on this side frame 15 (refer to Figure 10 ) is in contact with the edge position of the upper surface of the release paper 3. Similarly, the top end of the triangular strip 152 on the side frame 15 located at the right end is flush with the upper surface of the PET film 2, and the lower end surface of the triangular strip 154 on this side frame 15 is in contact with the edge position of the upper surface of the PET film 2. In this way, it can prevent the poured and flattened removable glue or adhesive from flowing to the side surfaces of the corresponding release paper 3 or PET film 2, affecting the aesthetics of the product.

[0060] Specifically, as Figures 3 - 6 shown, the feeding part 12 includes a feed box 121 fixedly installed at the bottom of the U-shaped frame 7. Peristaltic pumps 122 are fixedly installed at both ends of the bottom of the feed box 121. A feed pipe 123 is communicated between the liquid inlet end of the peristaltic pump 122 and the feed box 121. A discharge pipe 124 is communicated with the liquid outlet end of the peristaltic pump 122. The feeding part 12 further includes leakage grooves penetrating through both ends of the bottom of the U-shaped frame 7. Among them, the leakage grooves communicate with the cavities formed between the corresponding feed box 121 and the two side plates 151, so that during the process of flattening and bonding by the scraping roller 11, the overflowed removable glue or adhesive can flow back into the corresponding feed box 121 under the guidance of the corresponding triangular strip 152, reducing the waste of the removable glue or adhesive. The sizes of the two leakage grooves and the cavities formed between the two side plates 151 at their respective ends are equal.

[0061] It should be noted that during the process of feeding the removable glue and adhesive inside the corresponding feed box 121, the peristaltic pump 122 is used to perform constant-flow feeding of the corresponding removable glue and adhesive, and the feeding rate can be adjusted according to the unwinding speed of the roller shaft 84 to avoid the situation of excessive supply and overflow of the removable glue and adhesive;

[0062] Further, a stirring shaft (not specifically shown in the drawings) can be additionally provided inside the bin 121 to keep the removable glue or adhesive inside the bin 121 in a state of real-time flow, which can not only prevent the removable glue or adhesive inside the bin 121 from undergoing partial curing or forming precipitation, but also enable the overflowed and refluxed removable glue or adhesive to be fully mixed with the materials inside the bin 121.

[0063] Specifically, as Figure 2 , Figures 4 - 6 and Figure 9 shown, the intermittent discharging part 13 includes a cloth distribution ring cylinder 131 rotatably installed in a through manner between two side frames 15. Both ends of the cloth distribution ring cylinder 131 are communicated with a conveying pipe 133 passing through the U-shaped frame 7. The conveying pipe 133 is communicated with the corresponding discharging pipe 124, and the conveying pipe 133 is rotatably installed between the cloth distribution ring cylinder 131. A notch 1310 is formed at a position on the outer side of the cloth distribution ring cylinder 131 between the two side frames 15, and an electric heating plate 132 is fixedly sleeved at a position on the outer side of the cloth distribution ring cylinder 131 between the two side frames 15. Wherein, triangular inclined plates (refer to Figure 9 ) are fixedly provided at both outer ends of the electric heating plate 132, which can prevent the materials (referring to the removable glue and adhesive) from flowing to the outer side of the electric heating plate 132 along the edge position of the notch 1310 during the process of the cloth distribution ring cylinder 131 turning over for discharging and then resetting. Moreover, the setting of the electric heating plate 132 can effectively prevent the removable glue or adhesive supplied to the inside of the cloth distribution ring cylinder 131 from curing. A power assembly for driving the cloth distribution ring cylinder 131 to rotate reciprocally is installed inside the U-shaped frame 7;

[0064] The power assembly includes gears 134 fixed at both outer ends of the cloth distribution ring cylinder 131, cross bars 135 and obliquely arranged straight plates 138 fixed on both sides of the inner cavity of the U-shaped frame 7. A swinging tooth plate 136 meshing with the corresponding gear 134 is rotatably installed on the outer side of the cross bar 135, and two limiting rings fitting with both sides of the swinging tooth plate 136 are fixedly sleeved on the outer side of the cross bar 135, so that the swinging tooth plate 136 will not shift during the swinging process. An arc spring 139 is fixedly connected between the swinging tooth plate 136 and the corresponding straight plate 138. The power assembly further includes two groups of convex plates 137 fixed on the corresponding unwinding mechanism 8, two in each group. Wherein, the convex plates 137 are installed on the outer side of the corresponding mandrel 82 extending into the U-shaped frame 7, and the convex plates 137 rotating with the mandrel 82 can be used to intermittently push the upper end of the corresponding swinging tooth plate 136 to swing, and the corresponding arc spring 139 is stretched, that is, as Figure 6 shown, the arc spring 139 in a stretched state, and the gears 134, the swinging tooth plates 136 and the convex plates 137 on the same side are arranged in a vertical coplanar manner.

[0065] It should be noted that when the arc spring 139 is in a stretched state (refer to Figure 6 ), the notch 1310 on the cloth ring cylinder 131 is in a vertical downward state, on the contrary, after the arc spring 139 pulls the swinging tooth plate 136 to reset after the deflection, the notch 1310 on the cloth ring cylinder 131 is in a vertical upward state, and in the process of elastic deformation of the arc spring 139, the swinging tooth plate 136 is always in a meshing state with the gear 134. In addition, the inner bottom end surface of the U-shaped frame 7 is inclined away from the unwinding station, so that the poured material can automatically approach the low end of the two layers of fabric to be bonded (i.e., the PET film 2 and the release paper 3 or the PP synthetic paper 1 and the PET film 2), avoiding the area without removal of glue or adhesive coverage, thereby affecting the performance of the product;

[0066] In the process of intermittently pouring the removable glue or adhesive, the corresponding roller is driven to unwind by the rotating core shaft 82, so that while the unwinding action is being performed, the rotating core shaft 82 will drive the two convex plates 137 thereon to rotate synchronously, and when the convex plate 137 rotates to contact the swinging tooth plate 136 in the initial state (that is, the arc spring 139 is in the natural state), as the convex plate 137 continues to rotate, the convex plate 137 will push the upper end of the corresponding swinging tooth plate 136 to swing around the corresponding cross bar 135 as the central axis, and the lower end of the swinging tooth plate 136 will drive the gear 134 to rotate during the swinging process, so that the notch 1310 on the material distribution ring cylinder 131 gradually changes from a vertical upward state to a vertical downward state, so that the material inside the material distribution ring cylinder 131 is gradually poured onto the corresponding working surface;

[0067] When the convex plate 137 rotates to be completely offset from the swing tooth plate 136, the swing tooth plate 136 will be reset under the restoring force of the arc spring 139, and the reset swing tooth plate 136 will drive the gear 134 to rotate, so that the notch 1310 on the material distribution ring cylinder 131 is changed from a vertical downward state to a vertical upward state, and when the notch 1310 on the material distribution ring cylinder 131 is in the vertical upward state, the peristaltic pump 122 performs a single feeding, allowing the extruded material to enter the inside of the material distribution ring cylinder 131 through the discharge pipe 124 and the conveying pipe 133 in turn, waiting for the next round of material dumping, and so on. The cycle can be repeated to achieve continuous unwinding of the PP synthetic paper 1, the PET film 2 and the release paper 3, and the continuous bonding between the PET film 2 and the release paper 3 and the PP synthetic paper 1 and the PET film 2 can be completed in one step, thereby improving the bonding efficiency;

[0068] In addition, during the bonding process between the PET film 2 and the release paper 3 and between the PP synthetic paper 1 and the PET film 2, when the left end (refer toFigure 6 ) After the doctor roll 11 levels and bonds the release paper 3, the removable glue, and the PET film 2, before pouring the adhesive on the upper surface of the PET film 2, a component for curing the removable glue (not specifically shown in the drawings) will be added to ensure that during the subsequent leveling and bonding process of the PP synthetic paper 1, the removable glue, and the PET film 2, the thickness of the glue layer 6 is damaged. Similarly, after the doctor roll 11 at the right end levels and bonds the PP synthetic paper 1, the removable glue, and the PET film 2, a component for curing the adhesive will also be added. The above two curing components can be appropriately selected according to existing curing methods, such as curing by electric heating tubes or hot air blowing.

[0069] Example 2: Refer to the attached drawings of the specification Figure 2 and Figures 7 - 8 , in a forming device for a weather-resistant advertising film of an embodiment of the present invention, anti-loosening mechanisms 9 for preventing the roller shaft 84 from slipping off are installed at the top of the U-shaped frame 7 corresponding to the positions of each U-shaped groove 85. The anti-loosening mechanism 9 includes a vertical frame 91 and a U-shaped frame 92 respectively fixed on both sides of the corresponding U-shaped groove 85. A swing seat 93 is hingedly installed in the middle of the vertical frame 91. A top-tightening arc block 94 extending into the corresponding U-shaped groove 85 is fixedly provided at the bottom of the swing seat 93. Among them, when the swing seat 93 is in the state as Figure 8 shown, the lowest point of the top-tightening arc block 94 just contacts the outer side of the core shaft 82, and the strip plate inserted into the strip groove 83 is within the coverage range of the projection plane of the top-tightening arc block 94 in the top view direction;

[0070] A T-shaped groove 95 is opened at the top of the end of the swing seat 93 close to the U-shaped frame 92. A T-shaped block 96 is slidably installed in the T-shaped groove 95. A straight spring 97 is fixedly connected between the end of the T-shaped block 96 located inside the T-shaped groove 95 and the inner side of the T-shaped groove 95. Among them, during the elastic deformation of the straight spring 97, one end of the T-shaped block 96 always remains in the state of being slidably installed inside the T-shaped groove 95. And, in order to ensure that the straight spring 97 can only be compressed in the horizontal direction, a guide rod can be provided on the inner side of the T-shaped groove 95, and at the same time, a slot is opened at the end of the T-shaped block 96 located inside the T-shaped groove 95, and the guide rod is inserted into the slot. One end of the T-shaped block 96 extending outside the T-shaped groove 95 is fixedly provided with a plug plate 98 that is movably inserted into the corresponding U-shaped frame 92, and an L-shaped lever 99 is fixedly connected to one end of the top of the T-shaped block 96. Among them, when the L-shaped lever 99 is in the state as Figure 8 shown, the straight spring 97 is still in the compressed state.

[0071] It should be noted that during the installation of the roller 84, the L-shaped lever 99 needs to be toggled along the direction of the T-shaped block 96, so that the straight spring 97 is compressed, and the insertion plate 98 is completely separated from the corresponding U-shaped frame 92. Then, the swing seat 93 is turned over. After the roller 84 is placed between the two mandrels 82 at the corresponding position, the swing seat is restored to the state as shown in Figure 8 shown, which can limit the docking state between the roller 84 and the mandrel 82, ensure that the roller 84 rotates stably with the mandrel 82, and the design of the anti-loosening mechanism 9 can realize the quick installation and fixation of the roller 84, and the replacement is also convenient.

[0072] Example 3: Referring to the attached drawings of the specification Figure 2 and Figure 12 , in a forming device for a weather-resistant advertising film of an embodiment of the present invention, clamping mechanisms 14 are installed at positions corresponding to the two doctor rollers 11 on the outside of the U-shaped frame 7. The clamping mechanism 14 includes a disc 142 located outside the U-shaped frame 7. The disc 142 is fixedly connected to the end of one of the round rods. A card slot 143 is formed in the middle of one end of the disc 142, and a plurality of convex columns 144 for assisting in toggling the rotation of the disc 142 are arranged on the outside of the disc 142;

[0073] The clamping mechanism 14 further includes two ear plates 141 fixed on the outside of the U-shaped frame 7 corresponding to the doctor roller 11. A buckle strip 145 is hingedly installed between the two ear plates 141. Among them, a notch groove is formed in the inner side of the bottom end of the buckle strip 145 to facilitate turning up the buckled buckle strip 145 to disengage from the card slot 143. And a soft rubber pad can be added on the surface of the buckling area of the buckle strip 145, so that the buckle strip 145 buckled into the inside of the card slot 143 will not easily disengage from the card slot 143 without external force, and the buckle strip 145 is movably clamped inside the corresponding card slot 143.

[0074] It should be noted that the doctor roller 11 can adopt a double-edge design with central symmetry to reduce its replacement frequency. When it is necessary to limit the working state of the doctor roller 11, after adjusting one of the cutting edges to the working position, the buckle strip 145 is turned over to the state of being buckled into the corresponding card slot 143, and the operation is quick and convenient.

[0075] In the above technical solution, the peristaltic pump 122 mentioned adopts a dispensing peristaltic pump of model BT301F(YZ25); the driving motor mentioned adopts a servo motor of model JSMA-PUC02D.

[0076] A forming method for a weather-resistant advertising film specifically includes the following operation steps:

[0077] S1, material preparation: three rollers 84 wound with PP synthetic paper 1, PET film 2 and release paper 3 are sequentially installed on three sets of unwinding mechanisms 8, and removable glue for bonding PET film 2 and release paper 3 and adhesive for bonding PP synthetic paper 1 and PET film 2 are respectively injected into two material boxes 121;

[0078] S2, bonding: ① Unwind the PET film 2 and the release paper 3, and use the convex plate 137 that rotates with the core shaft 82 to intermittently toggle the corresponding swinging tooth plate 136 to swing, so that the driving gear 134 drives the corresponding cloth ring cylinder 131 to rotate 180°, and the notch 1310 is changed from upward to downward, so that the removable glue supplied to the inside of the cloth ring cylinder 131 by the feeding part 12 is poured onto the release paper 3, and as the unwinding process proceeds, the scraper roller 11 at the corresponding position is used to press against the PET film 2 and bond it to the release paper 3, wherein, in order to prevent warping, the peeling value of the removable glue needs to reach 6.5N / 25mm;

[0079] ② Unwind the PP synthetic paper 1 and the PET film 2, and use the convex plate 137 that rotates with the core shaft 82 to intermittently toggle the corresponding swinging tooth plate 136 to swing, so that the driving gear 134 drives the corresponding cloth ring cylinder 131 to rotate 180°, and the notch 1310 is changed from upward to downward, so that the adhesive supplied to the inside of the cloth ring cylinder 131 by the feeding part 12 is poured onto the PET film 2, and as the unwinding process proceeds, the scraper roller 11 at the corresponding position is used to press against the PP synthetic paper 1 and bond it to the PET film 2, wherein, after the PP synthetic paper 1 and the PET film 2 are bonded (compounded), the peeling value of the two films needs to reach 50N / 25mm;

[0080] S3, coating: coating the surface of the PP synthetic paper 1 on the surface of the bonded advertising film to enable it to absorb the inkjet printing ink.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A forming device for a weather-resistant advertising film, which is used to form the weather-resistant advertising film. It is characterized in that, The weather-resistant advertising film includes a PP synthetic paper (1), a PET film (2), and a release paper (3) sequentially arranged from top to bottom. An adhesive layer (5) for bonding the PP synthetic paper (1) and the PET film (2) is provided between the PP synthetic paper (1) and the PET film (2). A glue layer (6) for bonding the PET film (2) and the release paper (3) is provided between the PET film (2) and the release paper (3). A coating (4) suitable for inkjet printing and ink absorption is coated on the surface of the PP synthetic paper (1). The forming device is used to sequentially bond the PP synthetic paper (1), the PET film (2), and the release paper (3). The forming device includes a U-shaped frame (7). At the top of the U-shaped frame (7), three unwinding mechanisms (8) for unwinding the PP synthetic paper (1), the PET film (2), and the release paper (3) respectively are arranged in sequence from left to right. Three guide rollers (10) that are staggeredly distributed with the corresponding unwinding mechanisms (8) are rotatably installed inside the U-shaped frame (7). At the positions corresponding to the spaces between adjacent two guide rollers (10) inside the U-shaped frame (7), intermittent discharging parts (13) for intermittently pouring materials are provided. A feeding part (12) corresponding to the two intermittent discharging parts (13) one by one is provided at the bottom of the U-shaped frame (7). Scraper rollers (11) are provided on one side of the two intermittent discharging parts (13) inside the U-shaped frame (7). And side frames (15) are provided at the positions corresponding to the two intermittent discharging parts (13) inside the U-shaped frame (7). Round rods that movably penetrate through the U-shaped frame (7) are fixedly provided at both ends of the two scraper rollers (11). The side frame (15) includes two side plates (151) fixed to the inside of the U-shaped frame (7). A triangular inclined bar one (152) is fixedly connected between the opposite sides of one end of the two side plates (151). A baffle (153) is fixedly provided on the outer side of one of the side plates (151) corresponding to the position of the triangular inclined bar one (152). A triangular inclined bar two (154) is fixedly provided on one side of the baffle (153). A sunk groove (155) is formed at the bottom of the triangular inclined bar one (152). The feeding part (12) includes a material box (121) fixedly installed at the bottom of the U-shaped frame (7). Peristaltic pumps (122) are fixedly installed at both ends of the bottom of the material box (121). A feed pipe (123) is communicated between the liquid inlet end of the peristaltic pump (122) and the material box (121). A discharge pipe (124) is communicated with the liquid outlet end of the peristaltic pump (122). The feeding part (12) further includes leakage grooves penetrating through both ends of the bottom of the U-shaped frame (7). The two leakage grooves are equal in size to the cavities formed between the two side plates (151) at their respective ends. The intermittent discharging part (13) includes a cloth ring cylinder (131) rotatably installed in a through manner between the two side frames (15). Delivery pipes (133) penetrating through the U-shaped frame (7) are communicated at both ends of the cloth ring cylinder (131). The delivery pipes (133) are communicated with the corresponding discharge pipes (124), and the delivery pipes (133) are rotatably installed with the cloth ring cylinder (131). A notch (1310) is formed at a position between two side frames (15) on the outer side of the fabric loop cylinder (131), and an electric heating plate (132) is fixedly sleeved at a position between two side frames (15) on the outer side of the fabric loop cylinder (131). A power assembly for driving the fabric loop cylinder (131) to rotate reciprocally is installed inside the U-shaped frame (7). The power assembly includes gears (134) fixed at both ends on the outer side of the fabric loop cylinder (131), cross bars (135) fixed on both sides inside the cavity of the U-shaped frame (7), and straight plates (138) arranged obliquely. A swing tooth plate (136) meshing with the corresponding gear (134) is rotatably installed on the outer side of the cross bar (135), and an arc spring (139) is fixedly connected between the swing tooth plate (136) and the corresponding straight plate (138). The power assembly further includes two groups of convex plates (137) fixed on the corresponding unwinding mechanism (8), two in each group. The gears (134), swing tooth plates (136), and convex plates (137) on the same side are arranged vertically in the same plane.

2. The forming device of a weather-resistant advertising film according to claim 1, characterized in that, The unwinding mechanism (8) includes two U-shaped plates (81) fixedly arranged on the outer side of the U-shaped frame (7) and U-shaped grooves (85) formed at the top of the U-shaped frame (7) corresponding to the two U-shaped plates (81). Core shafts (82) are rotatably installed at the central positions inside the two U-shaped plates (81), and strip grooves (83) are formed in the middle of the opposite ends of the two core shafts (82). A roller shaft (84) is arranged between the two core shafts (82). Strip plates fixedly provided at both ends of the roller shaft (84) are movably inserted into the corresponding strip grooves (83). The PP synthetic paper (1), PET film (2), and release paper (3) are respectively wound around the outer sides of the three roller shafts (84).

3. The forming device of a weather-resistant advertising film according to claim 2, characterized in that, Anti-loosening mechanisms (9) for preventing the roller shaft (84) from disengaging are installed at positions corresponding to each U-shaped groove (85) at the top of the U-shaped frame (7). The anti-loosening mechanism (9) includes vertical frames (91) and U-shaped frames (92) respectively fixed on both sides of the corresponding U-shaped groove (85). A swing seat (93) is hinged and installed in the middle of the vertical frame (91), and a top pressing arc block (94) extending into the corresponding U-shaped groove (85) is fixedly provided at the bottom of the swing seat (93). A T-shaped groove (95) is formed at the top of the end of the swing seat (93) close to the U-shaped frame (92). A T-shaped block (96) is slidably installed inside the T-shaped groove (95). A straight spring (97) is fixedly connected between the end of the T-shaped block (96) located inside the T-shaped groove (95) and the inner side of the T-shaped groove (95). An insertion plate (98) movably inserted into the corresponding U-shaped frame (92) is fixedly provided at the end of the T-shaped block (96) extending outside the T-shaped groove (95), and an L-shaped lever (99) is fixedly connected to one end of the top of the T-shaped block (96).

4. The forming device of a weather-resistant advertising film according to claim 1, characterized in that At the positions corresponding to the two scraper rollers (11) on the outer side of the U-shaped frame (7), a clamping mechanism (14) is installed. The clamping mechanism (14) includes a disc (142) located on the outer side of the U-shaped frame (7). The disc (142) is fixedly connected to the end of a round rod. A clamping groove (143) is formed in the middle of one end of the disc (142), and a plurality of convex columns (144) are arranged on the outer side of the disc (142). The clamping mechanism (14) further includes two ear plates (141) fixed on the outer side of the U-shaped frame (7) corresponding to the scraper rollers (11). A buckle strip (145) is hinged between the two ear plates (141), and the buckle strip (145) is movably clamped inside the corresponding clamping groove (143).

5. A forming method for a weather-resistant advertising film, which uses the forming device for a weather-resistant advertising film described in any one of claims 2-4 to produce and form the weather-resistant advertising film, characterized in that Specifically, it includes the following operation steps: S1. Stock preparation: Install three roller shafts (84) wound with PP synthetic paper (1), PET film (2), and release paper (3) on three unwind mechanisms (8) in sequence, and inject the removable glue for bonding the PET film (2) and the release paper (3) and the adhesive for bonding the PP synthetic paper (1) and the PET film (2) into the two material boxes (121) respectively. S2. Bonding: ① Unwind the PET film (2) and the release paper (3). Use the convex plate (137) rotating with the core shaft (82) to intermittently push the corresponding swing tooth plate (136) to swing, so as to drive the gear (134) to drive the corresponding fabric cylinder (131) to rotate 180°, change the notch (1310) from upward to downward, pour the removable glue fed into the fabric cylinder (131) by the feeding part (12) onto the release paper (3), and as the unwinding process progresses, use the scraper roller (11) at the corresponding position to press the PET film (2) and bond it to the release paper (3). ② Unwind the PP synthetic paper (1) and the PET film (2). Use the convex plate (137) rotating with the core shaft (82) to intermittently push the corresponding swing tooth plate (136) to swing, so as to drive the gear (134) to drive the corresponding fabric cylinder (131) to rotate 180°, change the notch (1310) from upward to downward, pour the adhesive fed into the fabric cylinder (131) by the feeding part (12) onto the PET film (2), and as the unwinding process progresses, use the scraper roller (11) at the corresponding position to press the PP synthetic paper (1) and bond it to the PET film (2). S3. Coating the coating: Perform coating processing on the surface of the PP synthetic paper (1) on the surface of the bonded advertising film to enable it to have the function of adsorbing inkjet ink.

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