Advertising film with high weather resistance and forming device and method thereof

Abstract

The invention relates to the technical field of advertisement film production, in particular to a high-weather-resistance advertisement film and a forming device and method.The advertisement film comprises PP synthetic paper, a PET film and release paper which are sequentially arranged from top to bottom, an adhesive layer is arranged between the PP synthetic paper and the PET film, and a glue layer is arranged between the PET film and the release paper; according to the forming device, a U-shaped rack is arranged, three unwinding mechanisms for unwinding PP synthetic paper, a PET film and release paper respectively are sequentially arranged at the top end of the U-shaped rack from left to right, three guide rollers are rotationally installed on the inner side of the U-shaped rack, and the three guide rollers are arranged on the inner side of the U-shaped rack. And the intermittent discharging part is arranged on the inner side of the U-shaped rack, so that the bonding between corresponding fabrics can be completed while the PP synthetic paper, the PET film and the release paper are unwound, and the operation is completed in one step.

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 the PP synthetic paper, PET film and release paper of the above-mentioned weather-resistant advertising film, the forming device comprising a U-shaped frame, the top of which is provided with three unwinding mechanisms from left to right for unwinding the PP synthetic paper, the PET film and the release paper respectively, and three guide rollers are rotatably mounted on the inner side of the U-shaped frame and are staggered with the corresponding unwinding mechanisms;

[0011] An intermittent unloading part for intermittent dumping of materials is provided at a position between two adjacent guide rollers on the inner side of the U-shaped frame, a feeding part corresponding to the two intermittent unloading parts is provided at the bottom of the U-shaped frame, a scraper roller is provided on one side of the two intermittent unloading parts on the inner side of the U-shaped frame, and a side frame is provided at a position on the inner side of the U-shaped frame corresponding to the two intermittent unloading parts, and round rods that movably penetrate the U-shaped frame are fixed at both ends of the two scraper rollers.

[0012] In a preferred embodiment, the unwinding mechanism includes two U-shaped plates fixedly arranged on the outside of the U-shaped frame and U-shaped grooves corresponding to the two U-shaped plates opened at the top of the U-shaped frame, and the core shafts are rotatably installed at the center positions of the inner sides of the two U-shaped plates, and the middle parts of the opposite ends of the two core shafts are provided with strip grooves;

[0013] A roller is arranged between the two core shafts, and strip plates movably inserted into the corresponding strip grooves are fixedly arranged at both ends of the roller. The PP synthetic paper, the PET film and the release paper are respectively wound on the outside of the three rollers.

[0014] In a preferred embodiment, the side frame includes two side panels fixed on the inner side of the U-shaped frame, a triangular bevel bar 1 is fixedly connected between the opposite sides of one end of the two side panels, a baffle is fixedly provided at a position corresponding to the triangular bevel bar 1 on the outer side of one of the side panels, a triangular bevel bar 2 is fixedly provided on one side of the baffle, and a sink groove is provided at the bottom of the triangular bevel bar 1.

[0015] In a preferred embodiment, the supply unit includes a material box fixedly mounted at the bottom of the U-shaped frame, and a peristaltic pump is fixedly mounted at both ends of the bottom of the material box, a feed pipe is connected between the liquid inlet end of the peristaltic pump and the material box, and a discharge pipe is connected to the liquid outlet end of the peristaltic pump;

[0016] The feeding part also includes leakage grooves which penetrate through the two ends of the bottom of the U-shaped frame, and the two leakage grooves are respectively equal in size to the cavities formed between the two side plates at the ends.

[0017] In a preferred embodiment, the intermittent unloading part includes a material distribution ring cylinder which is rotatably installed between the two side frames, and both ends of the material distribution ring cylinder are connected with a conveying pipe which passes through the U-shaped frame, and the conveying pipe is connected with the corresponding discharge pipe, and the conveying pipe is rotatably installed with the material distribution ring cylinder;

[0018] A slot is provided on the outer side of the material distribution ring cylinder between the two side frames, and an electric heating plate is fixedly sleeved on the outer side of the material distribution ring cylinder between the two side frames. A power component for driving the material distribution ring cylinder to reciprocate is installed on the inner side of the U-shaped frame.

[0019] In a preferred embodiment, the power assembly includes gears fixed at both ends of the outer side of the material distributing ring cylinder, a crossbar fixed at both sides of the inner cavity of the U-shaped frame and a straight plate arranged in an inclined manner, a swinging toothed plate meshing with a corresponding gear is rotatably mounted on the outer side of the crossbar, and an arc spring is fixedly connected between the swinging toothed plate and the corresponding straight plate;

[0020] The power assembly also includes two groups of convex plates fixed on the corresponding unwinding mechanism, with two in each group, and the gear, swinging gear plate and convex plate located on the same side are arranged vertically and coplanarly.

[0021] In a preferred embodiment, an anti-loosening mechanism for preventing the roller from jumping off is installed at the position corresponding to each U-shaped groove on the top of the U-shaped frame, and the anti-loosening mechanism includes a vertical frame and a U-shaped frame 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 tightening arc block extending to the inside of the corresponding U-shaped groove is fixed at the bottom of the swing seat;

[0022] A T-slot is provided on the top of one end of the swing seat close to the U-shaped frame, a T-block is slidably installed inside the T-slot, a straight spring is fixedly connected between one end of the T-block located inside the T-slot and the inner side of the T-slot, an insert plate movably plugged into the corresponding U-shaped frame is fixedly provided on one end of the T-block extending outside the T-slot, and an L-shaped lever is fixedly connected to one end of the top of the T-block.

[0023] In a preferred embodiment, a locking mechanism is installed at the positions corresponding to the two scraper rollers on the outside of the U-shaped frame, and the locking mechanism includes a disc located on the outside of the U-shaped frame, the disc is fixedly connected to the end of the round rod, a locking groove is opened in the middle of one end of the disc, and a plurality of convex columns are opened on the outside of the disc;

[0024] The clamping mechanism also includes two ear plates fixed on the outside of the U-shaped frame corresponding to the scraper roller, a buckle strip is hingedly installed between the two ear plates, and the buckle strip is movably clamped in the corresponding clamping slot.

[0025] The present invention also provides a method for producing and molding the aforementioned weather-resistant advertising film using the molding device of the aforementioned weather-resistant advertising film, which specifically includes the following steps:

[0026] S1. Material preparation: three rollers wound with PP synthetic paper, PET film and release paper are sequentially installed on three sets of unwinding mechanisms, and removable glue for bonding PET film and release paper and adhesive for bonding PP synthetic paper and PET film are respectively injected into two material boxes;

[0027] S2, bonding: ① Unwind the PET film and release paper, use the convex plate that rotates with the core shaft to intermittently toggle the corresponding swinging tooth plate to swing, so that the driving gear drives the corresponding cloth ring cylinder to rotate 180°, and the notch is changed from upward to downward, so that the removable glue supplied to the inside of the cloth ring cylinder by the feeding part is poured onto the release paper, and as the unwinding process proceeds, the scraper roller at the corresponding position is used to press against the PET film and bond it to the release paper;

[0028] ② Unwind the PP synthetic paper and PET film, use the convex plate that rotates with the core shaft to intermittently toggle the corresponding swinging tooth plate to swing, so that the driving gear drives the corresponding cloth ring cylinder to rotate 180°, and the notch is changed from upward to downward, so that the adhesive supplied to the inside of the cloth ring cylinder by the feeding part is poured onto the PET film, and as the unwinding process proceeds, the scraper roller at the corresponding position is used to press against the PP synthetic paper and bond it to the PET film;

[0029] S3. Coating: The surface of the PP synthetic paper on the surface of the bonded advertising film is coated to enable it to absorb the inkjet printing ink.

[0030] Beneficial effects of the present invention:

[0031] 1. The advertising film of the present invention has strong glue adhesion during use, does not shrink, does not warp, and has no residual glue when the advertisement is removed. The advertisement film can be torn off in one piece, thereby improving the efficiency of removing advertisements.

[0032] 2. The present invention can realize continuous unwinding of PP synthetic paper, PET film and release paper, and simultaneous completion of continuous bonding between PET film and release paper, as well as between PP synthetic paper and PET film, in one step, thereby improving bonding efficiency;

[0033] 3. The present invention can effectively prevent the removable glue or adhesive that overflows during the dumping and scraping bonding process from flowing onto the side of the corresponding release paper or PET film by providing a side frame, thereby affecting the aesthetics of the product;

[0034] 4. The present invention can realize the rapid installation and fixation of the roller shaft through the coordinated use of the unwinding mechanism and the anti-loosening mechanism, and the replacement is also convenient. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0037] Figure 2 It is a schematic diagram of the overall structure of the molding device of the present invention from a first viewing angle;

[0038] Figure 3 is a schematic diagram of the overall structure of the molding device of the present invention from a second viewing angle;

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

[0040] Figure 5 The present invention Figure 4 Schematic diagram of the AA section structure;

[0041] Figure 6 The present invention Figure 4 Schematic diagram of the cross-section structure along the BB axis;

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

[0043] Figure 8 It is a schematic diagram of the structure of the anti-loosening mechanism of the molding device of the present invention;

[0044] Fig. 9 It is an exploded schematic diagram of the material ring cylinder and the electric heating plate of the forming device of the present invention;

[0045] Fig.10 It is a schematic diagram of the overall structure of the side frame of the forming device of the present invention;

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

[0047] Fig.12 It is a schematic diagram of the structure of the clamping mechanism of the forming device of the present invention.

[0048] The reference numerals in the figure 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; 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. Insert plate; 99. L-shaped lever; 10. Guide roller; 11. Scraper roller; 12. Feeding unit; 121. Material box; 122. Peristaltic Pump; 123, feed pipe; 124, discharge pipe; 13, intermittent unloading part; 131, material distribution ring; 132, electric heating plate; 133, conveying pipe; 134, gear; 135, cross bar; 136, swing tooth plate; 137, convex plate; 138, straight plate; 139, arc spring; 1310, notch; 14, locking mechanism; 141, ear plate; 142, disc; 143, slot; 144, convex column; 145, buckle strip; 15, side frame; 151, side plate; 152, triangular oblique strip one; 153, baffle; 154, triangular oblique strip two; 155, trough. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within 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 a kind of equipment used to produce advertising films, which is used to continuously composite and form PP synthetic paper, adhesive, PET film, removable glue and release paper that constitute the advertising film.

[0051] Refer to the instruction manual Figure 1A weather-resistant advertising film according to an embodiment of the present invention comprises a PP synthetic paper 1, a PET film 2 and a release paper 3 arranged in sequence from top to bottom, wherein the PP synthetic paper 1 adopts the weather-resistant PP synthetic paper in the prior art, with a thickness of 48 to 140 μm, the thickness of the PET film 2 is 12 to 125 μm, and can be transparent, black, gray, blue, white, etc., the thickness of the release paper 3 is 12 to 200 μm, and can be offset paper, coated paper, CCK paper (kaolin coated kraft paper ), single-lined or double-lined papers such as glassine kraft paper, and the release paper 3 can also be replaced by a release film of the same thickness, the release film can be a transparent, matte, blue, milky white or other color film, 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, the surface of the PP synthetic paper 1 is coated with a coating 4 suitable for inkjet printing and ink absorption, and the coating 4 is of two types: water-based and weak solvent.

[0052] It should be noted that the present invention forms a final product by compounding a PP synthetic paper 1 coated with a coating 4 that can absorb inkjet ink with a PET film 2 as the surface layer of the advertising film, and bonding it with a release paper 3 coated with removable glue. This can not only improve the problem of loose glue adhesion, but also avoid problems such as glue remaining on the back of the advertising paper when it is torn off and shrinkage and warping of the advertising paper.

[0053] Example 1: Refer to the attached specification Figure 2-3 A device for forming a weather-resistant advertising film according to an embodiment of the present invention comprises a U-shaped frame 7, and three unwinding mechanisms 8 for unwinding PP synthetic paper 1, PET film 2 and release paper 3 are arranged on the top of the U-shaped frame 7 from left to right, and three guide rollers 10 are rotatably installed inside the U-shaped frame 7 and are staggered with the corresponding unwinding mechanisms 8;

[0054] An intermittent unloading portion 13 for intermittent dumping of materials is provided at a position between two adjacent guide rollers 10 on the inner side of the U-shaped frame 7, a feeding portion 12 corresponding to the two intermittent unloading portions 13 is provided at the bottom of the U-shaped frame 7, a scraper roller 11 is provided on one side of the two intermittent unloading portions 13 on the inner side of the U-shaped frame 7, and a side frame 15 is provided at a position on the inner side of the U-shaped frame 7 corresponding to the two intermittent unloading portions 13, and round rods that movably penetrate the U-shaped frame 7 are fixed at both ends of the two scraper rollers 11.

[0055] It should be noted that the present invention utilizes three unwinding mechanisms 8 to continuously unwind the PP synthetic paper 1, the PET film 2 and the release paper 3, and while unwinding, drives two intermittent unloading parts 13 to pour the removable glue and the adhesive on the surface of the release paper 3 and the PET film 2, respectively, and then uses two scraper rollers 11 to complete the bonding between the PET film 2 and the release paper 3, and the PP synthetic paper 1 and the PET film 2, respectively, to achieve continuous and synchronous bonding between the PET film 2 and the release paper 3, and between the PP synthetic paper 1 and the PET film 2, thereby improving the bonding efficiency.

[0056] Specifically, Figure 2 and Figure 4-Figure 7 As shown, the unwinding mechanism 8 includes two U-shaped plates 81 fixedly arranged on the outside of the U-shaped frame 7 and a U-shaped groove 85 opened at the top of the U-shaped frame 7 and corresponding to the two U-shaped plates 81. The center positions of the inner sides of the two U-shaped plates 81 are both rotatably mounted with a core shaft 82. A driving motor for driving the corresponding core shaft 82 to rotate is installed on one of the U-shaped plates 81. A strip groove 83 is opened 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. Both ends of the roller shaft 84 are fixed with a movable plug-in to the corresponding strip groove. The strip plate inside 83, wherein the core shaft 82 and the roller shaft 84 are both arranged concentrically with the arc segment of the U-shaped groove 85, one end of the strip groove 83 opened on the core shaft 82 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 away 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 hold up the roller shaft 84, and the PP synthetic paper 1, the PET film 2 and the release paper 3 are respectively wound on the outside of the three roller shafts 84.

[0057] It should be noted that, in the process of installing the roller 84, the strips at both ends of the roller wound with the PP synthetic paper 1, the PET film 2 and the release paper 3 are respectively mounted between the two core shafts 82 on the corresponding unwinding mechanism 8, and the strips on the roller 84 are supported by the corresponding U-shaped groove 85, and then the core shaft 82 is driven to rotate by the driving motor, thereby driving the corresponding roller 84 to rotate for unwinding, and the design of the unwinding mechanism 8 can facilitate the rapid replacement of the roller 84.

[0058] Specifically, Figure 6 and Figure 10-11As shown, the side frame 15 includes two side panels 151 fixed on the inner side of the U-shaped frame 7, and a triangular bevel bar 152 is fixedly connected between the opposite sides of one end of the two side panels 151 for guiding the removable glue or adhesive overflowing during the scraping and bonding process using the scraper roller 11 to flow back, and a baffle 153 is fixedly provided at the position of the triangular bevel bar 152 on the outer side of one of the side panels 151, and a triangular bevel bar 2 154 is fixedly provided on one side of the baffle 153, wherein the setting of the baffle 153 can cooperate with the corresponding triangular bevel bar 2 154 to block the poured removable glue or adhesive to prevent overflow, and a sinking groove 155 is provided at the bottom of the triangular bevel bar 152, and the setting of the sinking groove 155 can make the bottom end of the inclined side of the triangular bevel bar 152 present a V-shaped structure, so as to prevent the removable glue or adhesive overflowing and flowing back from accumulating on the bottom end surface of the triangular bevel bar 152.

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

[0060] Specifically, Figure 3-Figure 6 As shown, the supply portion 12 includes a material box 121 fixedly installed at the bottom of the U-shaped frame 7, and peristaltic pumps 122 are fixedly installed at both ends of the bottom of the material box 121. A feed pipe 123 is connected between the liquid inlet end of the peristaltic pump 122 and the material box 121, and a discharge pipe 124 is connected to the liquid outlet end of the peristaltic pump 122. The supply portion 12 also includes a leakage groove running through the two ends of the bottom of the U-shaped frame 7, wherein the leakage groove is connected to the corresponding material box 121 and the cavity formed between the two side plates 151, so that in the process of scraping and bonding by the scraper roller 11, the overflowed removable glue or adhesive can flow back to the corresponding material box 121 under the guidance of the corresponding triangular bevel bar 152, thereby reducing the waste of the removable glue or adhesive, and the two leakage grooves are equal in size to the cavity formed between the two side plates 151 at their ends.

[0061] It should be noted that, in the process of supplying the removable glue and adhesive in the corresponding material box 121, the peristaltic pump 122 is used to deliver the corresponding removable glue and adhesive at a constant flow, and the delivery rate can be adjusted according to the unwinding speed of the roller 84 to avoid the removable glue and adhesive from being oversupplied and overflowing;

[0062] Furthermore, a stirring shaft (not specifically shown in the accompanying drawings) may be added inside the material box 121 to keep the removable glue or adhesive inside the material box 121 in a real-time flowing state, which can prevent the removable glue or adhesive inside the material box 121 from being locally solidified or precipitated, and can also allow the removable glue or adhesive that overflows and flows back into the material box 121 to be fully mixed with the material in the material box 121.

[0063] Specifically, Figure 2 , Figure 4-Figure 6 and Fig. 9 As shown, the intermittent unloading part 13 includes a material distribution ring cylinder 131 which is rotatably installed between the two side frames 15 in a through-type manner. Both ends of the material distribution ring cylinder 131 are connected with a conveying pipe 133 which penetrates the U-shaped frame 7. The conveying pipe 133 is connected with the corresponding discharge pipe 124, and the conveying pipe 133 is rotatably installed with the material distribution ring cylinder 131. A notch 1310 is opened at the outer side of the material distribution ring cylinder 131 between the two side frames 15, and an electric heating plate 132 is fixedly sleeved at the outer side of the material distribution ring cylinder 131 between the two side frames 15, wherein both ends of the outer side of the electric heating plate 132 are fixedly provided with a triangular inclined plate (refer to Fig. 9 ), which can prevent the material (referring to the removable glue and adhesive) from flowing to the outside of the electric heating plate 132 along the edge of the notch 1310 during the process of resetting after the material distribution ring cylinder 131 is turned over and unloaded, and the setting of the electric heating plate 132 can effectively prevent the removable glue or adhesive supplied to the inside of the material distribution ring cylinder 131 from solidifying. A power component for driving the material distribution ring cylinder 131 to reciprocate is installed on the inner side of the U-shaped frame 7;

[0064] The power assembly includes gears 134 fixed to the two ends of the outer side of the cloth ring tube 131, a cross bar 135 fixed to the two sides of the inner cavity of the U-shaped frame 7, and a straight plate 138 arranged obliquely. 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 limit rings that fit with the two sides of the swinging tooth plate 136 are also 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 also includes two groups of convex plates 137 fixed to the corresponding unwinding mechanism 8, two in each group, wherein the convex plate 137 is installed on the outer side of the corresponding core shaft 82 extending to the inside of the U-shaped frame 7, and the convex plate 137 rotating with the core shaft 82 can be used to intermittently push the upper end of the corresponding swinging tooth plate 136 to swing, and cause the corresponding arc spring 139 to be stretched, that is, Figure 6 The arc spring 139 is shown in a stretched state, and the gear 134, the swing tooth plate 136 and the convex plate 137 on the same side are arranged vertically in the same plane.

[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 to Figure 6 ) after the scraper roller 11 completes the scraping and bonding of the release paper 3, the removable glue and the PET film 2, a component for curing the removable glue (not specifically shown in the accompanying drawings) will be added before pouring the adhesive on the upper surface of the PET film 2 to ensure that the thickness of the glue layer 6 is destroyed during the subsequent scraping and bonding of the PP synthetic paper 1, the removable glue and the PET film 2. Similarly, after the scraper roller 11 at the right end completes the scraping and bonding of 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 the existing curing methods, such as electric heating tube heating curing, hot air curing, etc.

[0069] Example 2: Refer to the attached specification Figure 2 and Figure 7-Figure 8 In one embodiment of the present invention, a device for forming a weather-resistant advertising film is provided. An anti-loosening mechanism 9 for preventing the roller shaft 84 from jumping off is installed at the position corresponding to each U-shaped groove 85 on the top of the U-shaped frame 7. 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 to the inside of the corresponding U-shaped groove 85 is fixed at the bottom of the swing seat 93. When the swing seat 93 is in a position such as Figure 8 In the state shown, the lowest point of the top-tightening arc block 94 just contacts the outer side of the mandrel 82, and the strip plate inserted into the strip groove 83 is within the coverage of the top-view projection surface of the top-tightening arc block 94;

[0070] A T-slot 95 is provided on the top of one end of the swing seat 93 close to the U-shaped frame 92, and a T-block 96 is slidably installed inside the T-slot 95. A straight spring 97 is fixedly connected between one end of the T-block 96 located inside the T-slot 95 and the inner side of the T-slot 95, wherein during the elastic deformation of the straight spring 97, one end of the T-block 96 always remains in a state of being slidably installed inside the T-slot 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 inside the T-slot 95, and a slot is provided at one end of the T-block 96 located inside the T-slot 95, and the guide rod is inserted into the slot, and one end of the T-block 96 extending to the outside of the T-slot 95 is fixedly provided with an insert plate 98 movably inserted into the corresponding U-shaped frame 92, and one end of the top of the T-block 96 is fixedly connected to an L-shaped lever 99, wherein when the L-shaped lever 99 is in a position such as Figure 8 In the state shown, the straight spring 97 is still in a compressed state.

[0071] It should be noted that, in the process of installing the roller shaft 84, it is necessary to move the L-shaped lever 99 along the direction of the T-shaped block 96 to compress the straight spring 97 so that the plug plate 98 is completely separated from the corresponding U-shaped frame 92, and then the swing seat 93 is turned over, and after the roller shaft 84 is erected between the two core shafts 82 at the corresponding position, the swing seat is restored to the position as shown in the figure. Figure 8 The state shown can limit the docking state between the roller 84 and the core shaft 82, ensuring that the roller 84 rotates stably with the core shaft 82. The design of the anti-loosening mechanism 9 can realize rapid installation and fixation of the roller 84, and is also convenient for replacement.

[0072] Example 3: Refer to the attached specification Figure 2 and Fig.12 According to an embodiment of the present invention, a device for forming a weather-resistant advertising film is provided. A positioning mechanism 14 is installed at positions corresponding to two scraper rollers 11 on the outside of the U-shaped frame 7. The positioning mechanism 14 includes a disc 142 located on the outside of the U-shaped frame 7. The disc 142 is fixedly connected to one end of a round rod. A slot 143 is provided in the middle of one end of the disc 142. A plurality of convex columns 144 for assisting the disc 142 in rotating are provided on the outside of the disc 142.

[0073] The locking mechanism 14 also includes two ear plates 141 fixed on the outside of the U-shaped frame 7 corresponding to the scraper roller 11, and a buckle strip 145 is hingedly installed between the two ear plates 141, wherein a notch groove is provided on the inner side of the bottom end of the buckle strip 145 to facilitate flipping up the buckle strip 145 in the buckled state to disengage from the slot 143, and a soft rubber pad can be added to the surface of the buckling area of ​​the buckle strip 145, so that the buckle strip 145 buckled into the inside of the slot 143 will not easily detach from the slot 143 without external force, and the buckle strip 145 is movably connected to the inside of the corresponding slot 143.

[0074] It should be noted that the scraper roller 11 can adopt a centrally symmetrical double scraper blade design to reduce its replacement frequency. When the working state of the scraper roller 11 needs to be limited, after adjusting one of the scraper blades to the working position, the buckle strip 145 is flipped to a state where it is buckled into the corresponding slot 143. The operation is quick and convenient.

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

[0076] A method for forming a weather-resistant advertising film, specifically comprising the following 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 weather-resistant advertising film, characterized in that: The invention comprises PP synthetic paper (1), PET film (2) and release paper (3) which are arranged in sequence 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); and a coating (4) suitable for inkjet printing and ink absorption is coated on the surface of the PP synthetic paper (1).

2. A device for forming a weather-resistant advertising film, which is used to sequentially bond the PP synthetic paper (1), PET film (2) and release paper (3) as described in claim 1, characterized in that: The forming device comprises a U-shaped frame (7), the top of the U-shaped frame (7) being provided with three unwinding mechanisms (8) from left to right for unwinding the PP synthetic paper (1), the PET film (2) and the release paper (3) respectively, and three guide rollers (10) which are staggered and arranged with respect to the corresponding unwinding mechanisms (8) are rotatably mounted inside the U-shaped frame (7); An intermittent discharge portion (13) for intermittently dumping materials is provided at a position corresponding to between two adjacent guide rollers (10) on the inner side of the U-shaped frame (7); a feeding portion (12) corresponding to the two intermittent discharge portions (13) is provided at the bottom of the U-shaped frame (7); a scraper roller (11) is provided on one side of the two intermittent discharge portions (13) on the inner side of the U-shaped frame (7); and a side frame (15) is provided at a position corresponding to the two intermittent discharge portions (13) on the inner side of the U-shaped frame (7); and round rods that movably penetrate the U-shaped frame (7) are fixedly provided at both ends of the two scraper rollers (11).

3. The device for forming a weather-resistant advertising film according to claim 2, characterized in that: The unwinding mechanism (8) comprises two U-shaped plates (81) fixedly arranged on the outside of the U-shaped frame (7) and U-shaped grooves (85) arranged at the top of the U-shaped frame (7) and corresponding to the two U-shaped plates (81); a core shaft (82) is rotatably mounted at the center position of the inner side of the two U-shaped plates (81); and a strip groove (83) is arranged at the middle of the opposite ends of the two core shafts (82); A roller (84) is provided between the two core shafts (82), and strip plates movably inserted into the corresponding strip grooves (83) are fixedly provided at both ends of the roller (84), and the PP synthetic paper (1), the PET film (2) and the release paper (3) are respectively wound on the outside of the three rollers (84).

4. The device for forming a weather-resistant advertising film according to claim 2, characterized in that: The side frame (15) comprises two side plates (151) fixed to the inner side of the U-shaped frame (7); a triangular oblique bar (152) is fixedly connected between opposite sides of one end of the two side plates (151); a baffle (153) is fixedly provided at a position corresponding to the triangular oblique bar (152) on the outer side of one of the side plates (151); a triangular oblique bar (154) is fixedly provided on one side of the baffle (153); and a sink groove (155) is provided at the bottom of the triangular oblique bar (152).

5. The device for forming a weather-resistant advertising film according to claim 4, characterized in that: The supply unit (12) comprises a material box (121) fixedly mounted at the bottom of the U-shaped frame (7), a peristaltic pump (122) fixedly mounted at both ends of the bottom of the material box (121), a feed pipe (123) being arranged between the liquid inlet end of the peristaltic pump (122) and the material box (121), and a discharge pipe (124) being arranged at the liquid outlet end of the peristaltic pump (122); The supply portion (12) further comprises leakage grooves extending through the two ends of the bottom of the U-shaped frame (7), and the two leakage grooves are respectively equal in size to the cavities formed between the two side plates (151) at the ends.

6. The device for forming a weather-resistant advertising film according to claim 5, characterized in that: The intermittent unloading part (13) comprises a material distribution ring cylinder (131) which is rotatably installed between two side frames (15) in a through-type manner, and both ends of the material distribution ring cylinder (131) are connected with a conveying pipe (133) which passes through the U-shaped frame (7), and the conveying pipe (133) is connected with the corresponding discharge pipe (124), and the conveying pipe (133) and the material distribution ring cylinder (131) are rotatably installed. A notch (1310) is provided on the outer side of the material distribution ring cylinder (131) at a position between the two side frames (15), and an electric heating plate (132) is fixedly sleeved on the outer side of the material distribution ring cylinder (131) at a position between the two side frames (15), and a power assembly for driving the material distribution ring cylinder (131) to reciprocate is installed on the inner side of the U-shaped frame (7).

7. The device for forming a weather-resistant advertising film according to claim 6, characterized in that: The power assembly comprises gears (134) fixed at both ends of the outer side of the material distributing ring cylinder (131), a crossbar (135) fixed at both sides of the inner cavity of the U-shaped frame (7), and a straight plate (138) arranged in an inclined manner, a swinging tooth plate (136) meshing with the corresponding gear (134) is rotatably mounted on the outer side of the crossbar (135), and an arc spring (139) is fixedly connected between the swinging tooth plate (136) and the corresponding straight plate (138); The power assembly also includes two groups of convex plates (137) fixed on the corresponding unwinding mechanism (8), with two in each group, and the gear (134), the swinging gear plate (136) and the convex plate (137) located on the same side are arranged vertically in the same plane.

8. The device for forming a weather-resistant advertising film according to claim 3, characterized in that: An anti-loosening mechanism (9) for preventing the roller shaft (84) from jumping off is installed at the top of the U-shaped frame (7) at a position corresponding to each U-shaped groove (85), and the anti-loosening mechanism (9) comprises 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), and a tightening arc block (94) extending into the inside of the corresponding U-shaped groove (85) is fixed at the bottom of the swing seat (93); A T-shaped slot (95) is provided at the top of one end of the swing seat (93) close to the U-shaped frame (92), a T-shaped block (96) is slidably mounted inside the T-shaped slot (95), a straight spring (97) is fixedly connected between one end of the T-shaped block (96) located inside the T-shaped slot (95) and the inner side of the T-shaped slot (95), an inserting plate (98) movably plugged into the corresponding U-shaped frame (92) is fixedly provided at one end of the T-shaped block (96) extending outside the T-shaped slot (95), and an L-shaped lever (99) is fixedly connected to one end of the top of the T-shaped block (96).

9. The device for forming a weather-resistant advertising film according to claim 2, characterized in that: A locking mechanism (14) is installed at positions on the outside of the U-shaped frame (7) corresponding to the two scraper rollers (11), the locking mechanism (14) comprising a disc (142) located on the outside of the U-shaped frame (7), the disc (142) being fixedly connected to the end of a round rod, a locking groove (143) being provided in the middle of one end of the disc (142), and a plurality of convex columns (144) being provided on the outside of the disc (142); The locking mechanism (14) further comprises two ear plates (141) fixed on the outside of the U-shaped frame (7) and corresponding to the scraper roller (11); a buckle strip (145) is hingedly mounted between the two ear plates (141); and the buckle strip (145) is movably locked in the corresponding locking slot (143).

10. A method for forming a weather-resistant advertising film, using the weather-resistant advertising film forming device as claimed in any one of claims 2 to 9 to form a weather-resistant advertising film, characterized in that: The specific steps include the following: S1, material preparation: three rollers (84) wound with PP synthetic paper (1), PET film (2) and release paper (3) are sequentially mounted on three sets of unwinding mechanisms (8), and removable glue for bonding the PET film (2) and the release paper (3) and adhesive for bonding the PP synthetic paper (1) and the PET film (2) are respectively injected into the interior of two material boxes (121); S2, bonding: ① unwinding the PET film (2) and the release paper (3), using the convex plate (137) rotating with the core shaft (82) to intermittently toggle the corresponding swinging tooth plate (136) to swing, so as to drive the gear (134) to drive the corresponding cloth ring cylinder (131) to rotate 180 degrees, and change the notch (1310) from upward to downward, so that the removable glue supplied by the supply part (12) to the inside of the cloth ring cylinder (131) is poured onto the release paper (3), and as the unwinding process proceeds, the scraper roller (11) at the corresponding position is pressed against the PET film (2) to bond it to the release paper (3); ② unwinding the PP synthetic paper (1) and the PET film (2), using the convex plate (137) rotating with the core shaft (82) to intermittently toggle the corresponding swinging tooth plate (136) to swing, so as to drive the gear (134) to drive the corresponding cloth ring cylinder (131) to rotate 180 degrees, and change the notch (1310) from upward to downward, so that the adhesive supplied to the inside of the cloth ring cylinder (131) by the supply part (12) is poured onto the PET film (2), and as the unwinding process proceeds, the scraper roller (11) at the corresponding position is pressed against the PP synthetic paper (1) to adhere to the PET film (2); 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.

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