Film covering and packaging device capable of achieving precise fixed-distance cutting and using method of film covering and packaging device

Abstract

The film covering and packaging device comprises a film covering main body mechanism, and the film covering main body mechanism comprises a welding base, a left vertical plate, a right vertical plate, a top plate, a roller bearing seat, a film covering power roller, a roller motor seat, a roller motor, a belt wheel and a belt; the left vertical plate and the right vertical plate are fixedly arranged on the welding base and are oppositely and symmetrically arranged, the top plate is fixedly arranged on the left vertical plate and the right vertical plate, two groups of roller bearing seats are arranged, each group comprises a plurality of roller bearing seats, the two groups of roller bearing seats are oppositely, symmetrically and fixedly arranged on the outer sides of the left vertical plate and the right vertical plate, and a plurality of laminating power rollers are fixedly arranged on the outer sides of the left vertical plate and the right vertical plate. The operation stability can be effectively improved, and the tangential stress uniformity between the film laminating pressing wheel and the film laminating power roller is improved, so that the film laminating effect is improved, and the problems of film stripping, bubbles and the like are reduced; and the film covering effect and the film covering quality which are influenced by wrinkles and curled edges in the film covering movement process are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of film-coating packaging, and in particular to a film-coating packaging device capable of accurately cutting at a fixed distance and a use method thereof. Background Art

[0002] Lamination refers to the process of applying a transparent plastic film to the surface of printed matter through heat pressing to protect and increase the gloss. Lamination has been widely used for surface binding and protection of book covers, albums, commemorative albums, postcards, product manuals, calendars and maps. Common laminated packaging products include cartons, paper boxes, handbags, fertilizer bags, seed bags, self-adhesive labels, etc.

[0003] The most basic function of lamination is to protect the packaging. During logistics transportation and storage, it is often affected by external forces such as wear, extrusion, and impact, so a protective layer is needed to protect the items from damage. Lamination can also be used to prevent moisture and prevent the packaging from being affected by moisture. In a humid environment, many items are easily eroded by moisture and lose their effectiveness. Lamination can effectively avoid this situation. Some items are prone to deterioration or chemical reactions under the influence of oxygen, thus losing their effectiveness. In order to avoid this situation, lamination can be used to prevent oxidation and effectively extend the service life of the items. Lamination can also be used to extend the shelf life of items. By covering a layer of protective film, the packaged items can be protected from external pollution and damage, thereby extending the shelf life of the items and maintaining their original freshness and quality.

[0004] In different industries, coatings have their own applications and characteristics. For example, coatings used in the food industry need to meet hygiene standards and can be used to package various foods to prevent food from bacterial contamination and oxidation. Coatings used in the textile industry can be used to protect textiles from dust and bacteria and increase their gloss and aesthetics.

[0005] ‌Pay attention to material selection for film packaging: Choosing the right film material is the key. Polyethylene (PE), polypropylene (PP) and polyester (PET) are commonly used film materials. PE film is colorless, odorless, transparent and non-toxic, but difficult to bond and requires corona treatment; PP film (such as BOPP) has excellent mechanical strength and transparency, but it is also a non-polar substance and requires corona treatment; PET film has good transparency and mechanical strength, good heat resistance, but is prone to static electricity. Attention should be paid to the processing technology: During the processing, it is necessary to reasonably control the process parameters such as temperature, pressure and time to ensure the quality and stability of the film. At the same time, care should be taken to avoid the generation of static electricity to avoid damage to the material. Attention should be paid to quality control: Check the appearance, size, thickness, etc. of the material to ensure that it meets the requirements. In addition, defects that may occur during the processing, such as bubbles, wrinkles, etc., should be checked to ensure the quality and stability of the film. Attention should be paid to storage and transportation: During storage and transportation, avoid adverse environmental conditions such as direct sunlight, high temperature, humidity, and prevent mechanical damage such as scratches and collisions to maintain its performance and quality.

[0006] During the lamination process, you may encounter some problems, such as snow spots on the product. This may be caused by too much powder spraying on the printed product, too little glue, inappropriate pressure on the pressure roller, or dry rubber on the glue roller. The solution includes increasing the glue amount appropriately, adjusting the pressure of the pressure roller, and cleaning the glue roller.

[0007] For example, the application number 202210553792.X provides a film-coating packaging system and method, which relates to the field of logistics packaging technology. The film-coating packaging system includes a conveying and measuring mechanism, a film-coating packaging mechanism, a discharging mechanism and a control device. The conveying and measuring mechanism includes a conveyor line, a dimension measurement group, a straightening baffle group and a position adjustment group; the conveyor line conveys items; the dimension measurement group is used to detect parameters such as the length, width and height of the items. The straightening baffle group can be movably arranged on the conveyor line and perpendicular to the preset direction, and is used to stop or avoid items. The position adjustment group is used to drive the items to move to the middle of the conveyor line. The film-coating packaging machine receives the items output by the conveyor line and packages and coats the items. The discharging mechanism is used to output items. The film-coating packaging method provided by the present invention is applied to the above-mentioned film-coating packaging system. The film-coating packaging system and method provided by the present invention can improve the efficiency of film-coating packaging and reduce the cost of manual labor.

[0008] However, most of the current laminating and packaging devices have low operating stability, resulting in uneven tangential force between the laminating pressure wheel and the laminating power roller, which leads to poor laminating effect and is prone to problems such as film peeling and bubbles. Wrinkles and curling are prone to occur during the laminating movement, affecting the laminating effect and quality. The cutting position control accuracy is not high, resulting in waste of laminating and high packaging costs. The product flows freely, and during the rolling process, the unevenness or vibration of the roller causes the movement position of the laminated product to change, affecting the laminating quality. Summary of the invention

[0009] The technical problem to be solved by the present invention is to improve the running stability, improve the uniformity of the tangential force between the laminating pressure wheel and the laminating power roller, thereby improving the laminating effect and reducing the occurrence of problems such as film peeling and bubbles; reduce the influence of wrinkles and curling on the laminating effect and the laminating quality due to the appearance of wrinkles and curling during the laminating movement; improve the control accuracy of the cutting position, reduce the waste of laminating, and reduce the packaging cost; control the free flow of products, reduce the change of the movement position of the laminating product due to the unevenness or vibration of the roller parts during the rolling process, and improve the laminating quality.

[0010] In order to solve the above technical problems, the present invention provides a film coating packaging device that can be accurately cut at a fixed distance, including a film coating main body mechanism, the film coating main body mechanism includes a welding base, a left vertical plate, a right vertical plate, a top plate, a roller bearing seat, a film coating power roller, a roller motor seat, a roller motor, a pulley, and a belt; the left vertical plate and the right vertical plate are fixedly arranged on the welding base and are symmetrically arranged facing each other, the top plate is fixedly arranged on the left vertical plate and the right vertical plate, the roller bearing seat is provided with two groups, each group is provided with a plurality of rollers, and the two groups are symmetrically fixedly arranged on the outer sides of the left vertical plate and the right vertical plate, the film coating power roller is provided with a plurality of rollers, which are movably arranged between the two groups of roller bearing seats, and the axes are parallel in the same horizontal plane, the roller motor seat is fixedly arranged on the left vertical plate, the roller motor is fixedly arranged on the roller motor seat, and the left end portions of the multiple groups of film coating power rollers and the end portions of the roller motors are fixedly provided with pulleys, and are movably connected through the belts to transmit power; The laminating main body mechanism is fixedly provided with a pressing wheel mechanism for pressing the laminating film and the product; A coating support mechanism for supporting the coating is fixedly arranged on the coating main body mechanism.

[0011] Preferably, the pressing wheel mechanism comprises a pressing wheel avoidance groove, a guide linear rail, a guide block, a pressing wheel cylinder, an intermediate connecting rod, a floating joint, and a coating pressing wheel; a plurality of groups of pressing wheel avoidance grooves are symmetrically provided on the left vertical plate and the right vertical plate, and a plurality of groups of guide linear rails are provided, which are symmetrically fixedly arranged on the outer sides of the left vertical plate and the right vertical plate, and on one side of the pressing wheel avoidance groove, a guide block is movably arranged on each group of the guide linear rails through a slider, so that the guide block can reciprocate up and down along the guide linear rail, the pressing wheel cylinder is fixedly arranged on the top plate, one end of the intermediate connecting rod is fixedly connected to the output end of the pressing wheel cylinder, and the other end is fixedly connected to the guide block, the floating joint is fixedly arranged on the guide block away from one end of the intermediate connecting rod, and the coating pressing wheel is movably arranged in two groups of floating joints arranged symmetrically facing each other; the coating pressing wheel is arranged directly above the coating power roller; Preferably, the coating support mechanism includes a supporting large vertical plate, a supporting angle seat, a rotating motor seat, a rotating motor, a film rod bearing seat, an air-supported film rod, a film roller, a primary auxiliary rod, a secondary auxiliary rod, a curling adjustment seat, a width adjustment long groove, an anti-curling fixing seat, and an anti-curling limiter; the supporting large vertical plate is fixedly arranged on the welding base through the supporting angle seat, and the rotating motor seat is provided with two groups, which are respectively fixedly arranged on the outside of the supporting large vertical plate, one group on the top and one group on the bottom, and are symmetrically arranged relative to the tangent plane of the coating pressure wheel and the coating power roller, the rotating motor is fixedly arranged on the rotating motor seat, and the film rod bearing seat is fixedly arranged on the supporting large vertical plate away from the One side of the rotating motor seat is concentric with the axis of the rotating motor, the air-supported film rod is movably arranged in the film rod bearing seat, one end of which is fixedly connected to the shaft end of the rotating motor, and the film roller is fixedly arranged on the air-supported film rod, and each group of the air-supported film rods is respectively provided with a first-level auxiliary rod and a second-level auxiliary rod on one side, which are parallel to the axis of the air-supported film rod, and the curling adjustment seat is fixedly arranged on the inner side of the supporting large vertical plate, between the first-level auxiliary rod and the second-level auxiliary rod, and the curling adjustment seat is provided with a plurality of groups of width adjustment long grooves, and a plurality of groups of anti-curling fixing seats are fixedly arranged on the width adjustment long grooves, and each group of the anti-curling fixing seats is fixedly provided with two anti-curling limiters symmetrically facing each other; Preferably, the film packaging device capable of precise distance cutting further comprises a transverse fixed-length cutting mechanism, which comprises a transverse cutting seat, a cutting push cylinder, a cutter connecting block, a cutter seat, a transverse cutter, an auxiliary bearing seat, and an auxiliary guide rod; the transverse cutting seat is fixedly arranged on the welding base, the cutting push cylinder is fixedly arranged on the top plate, the cutter seat is fixedly connected to the output end of the cutting push cylinder through the cutter connecting block, the transverse cutter is fixedly arranged on the cutter seat, the auxiliary bearing seat is provided with multiple groups and is fixedly arranged on the top plate, the auxiliary guide rod is movably arranged in the auxiliary bearing seat, and one end is fixedly connected to the cutter seat; Preferably, the film packaging device capable of precise cutting at a fixed distance also includes a longitudinal fixed-length cutting mechanism, which includes a fixed block, a directional straight rail, a slider, a linear motor, a stator rail, a movable slider, a cutting wheel seat, a cutting wheel motor, a longitudinal cutting wheel, a longitudinal cutting adjustment motor, and an adjusting screw; the linear motor is provided with two groups, which are respectively fixed at one end of the two groups of stator rails, and two groups of movable sliders are movably provided on each group of the stator rails, and a cutting wheel seat is fixedly provided on each group of the movable sliders, and the cutting wheel motor is fixedly provided on the cutting wheel seat, and the motor A longitudinal cutting wheel is fixedly arranged at the end of the shaft, one group of the linear motors is fixedly arranged between the left vertical plate and the right vertical plate through the fixed block, and another group of the linear motors is movably arranged between the left vertical plate and the right vertical plate through the directional straight rail and the slider, the two groups of stator rails are arranged in parallel, and the longitudinal cutting wheels on each group of movable sliders are symmetrically arranged facing each other, the longitudinal cutting adjustment motor is fixedly arranged on the top plate, one end of the adjusting screw rod is fixedly connected to the longitudinal cutting adjustment motor, and the other end is movably connected to the stator rail on the slider through a nut; Preferably, the film packaging device capable of precise cutting at a fixed distance also includes an adjustable feeding mechanism, which includes a fixed large plate, a belt support seat, a belt roller seat, a conveying belt, a conveying motor, a fixed support vertical plate, an auxiliary support wheel, a slide rod support seat, a slide rod, an adjustable support plate seat, an adjustable support vertical plate, a width-adjusting bearing seat, and a width-adjusting screw rod; the fixed large plate is fixedly arranged on the welding base, and on one side of the film laminating power roller, the belt support seat is provided with two groups, which are respectively fixedly arranged at both ends of the fixed large plate, and the belt roller seat is fixedly arranged on the belt support seat, and the conveying belt is movably connected through two groups of rotating shafts in the belt roller seats, and is connected and driven by a pulley belt through the conveying motor; the fixed support vertical plates are provided with two groups, which are respectively fixedly arranged on both sides of the conveying belt The wheelbase is shortened and the shifting mechanism is adapted to move the trainer to the next level and the trainer to move the trainer to a higher level. Preferably, the film packaging device capable of precise and fixed-distance cutting further comprises a material pressing mechanism, wherein the material pressing mechanism comprises a support plate, a support frame, a sliding rod cylinder, a sliding vertical plate, a pressure wheel seat, a pressure wheel row, and a guide pressure plate; the support plate is fixedly arranged on one side of the left vertical plate and the right vertical plate, the support frame is fixedly arranged on the fixed large plate, the sliding rod cylinder is fixedly arranged between the support plate and the support frame, the sliding vertical plate is fixedly arranged on the movable end of the sliding rod cylinder, the pressure wheel seat is fixedly arranged on the sliding vertical plate, a plurality of groups of pressure wheels row are movably arranged on the pressure wheel seat, the guide pressure plate is fixedly arranged on the sliding vertical plate, the outer circle of the pressure wheel row is tangent to the bottom surface of the guide pressure plate, and the pressure wheel row is arranged on the upper side of the conveyor belt; Preferably, the film packaging device capable of precise and fixed-distance cutting also includes a discharging mechanism, wherein the discharging mechanism includes a discharging seat, a roller shaft, a roller, a discharging motor, a pressure rod support seat, a pressure rod seat, a pressure rod, and an adjusting handle; the discharging seat is fixedly arranged on the welding base, and the film-laminating power roller is away from the side of the adjustable feeding mechanism, and the roller shaft is provided with two groups, which are movably arranged on the discharging seat, and multiple groups of rollers are fixedly arranged on the roller shaft, one group of roller shaft ends are fixedly connected to the discharging motor, and the two groups of roller shafts are connected by belts, and the pressure rod support seat is provided with two groups, which are fixedly arranged on the discharging seat, and the two groups are symmetrically arranged, the pressure rod seat is movably arranged in the pressure rod support seat and can move up and down, the pressure rod is movably arranged in the two groups of pressure rod seats, and the adjusting handle is movably arranged on the pressure rod support seat, and one end is fixedly connected to the pressure rod seat; Preferably, the film packaging device capable of precise cutting at a fixed distance further comprises a fixed-length sensor; two groups of the fixed-length sensors are provided, fixedly arranged on one group of the fixed support vertical plates, arranged one in front and one in the back; A method for using a film-covering packaging device capable of precise cutting at a fixed distance comprises the following steps: S1, the width adjustment screw is driven to rotate by the motor, thereby driving the two groups of adjustable support plate seats to move toward each other, approaching or moving away from the two groups of fixed support vertical plates, limiting the feed width, and the conveying motor drives the conveying belt to rotate, thereby driving the product to enter; S2, the pressure wheel is lowered to the position above the conveyor belt at a distance from the thickness of the product, and the product enters the laminating power roller through the conveyor belt, the pressure wheel and the guide plate; S3, the product passes through the first group of fixed-length sensors and leaves the first group of fixed-length sensors, and the length of the product is measured, and the second group performs re-measurement data comparison to determine the transverse cutting position of the film; S4, the drum motor rotates, thereby transmitting power through the left end of the coating power drum and the belt on the pulley fixedly arranged at the end of the drum motor, driving the coating power drum to rotate; S5, the pressure wheel cylinder is actuated, and the guide block is driven to reciprocate up and down along the guide linear rail through the intermediate connecting rod, thereby driving the film pressure wheel on the floating joint to reciprocate up and down along the guide linear rail, approaching or moving away from the film laminating power roller; S6, the film roller of the required width is sleeved on the air-supported film rod, the air-supported film rod pneumatically tightens and fixes the film roller, the rotating motor rotates, driving the upper and lower groups of the film rollers to rotate towards each other, the film is wound around the primary auxiliary rod, and then passes through two groups of symmetrically arranged anti-curling limiters, and then around the secondary auxiliary rod to enter the tangent position between the film pressing wheel and the film power roller; S7, the cutting push cylinder is actuated, and the transverse cutter on the cutter seat is driven to move linearly downward along the axis direction of the auxiliary guide rod through the cutter connecting block, and returns after contacting the transverse cutting seat and completing the transverse cutting action of the coating; S8, the linear motor drives the movable slider on the stator rail to move linearly, thereby driving the two groups of movable sliders on the same group of stator rails to move toward each other, and the movable sliders on different stator rails move synchronously to adjust the different upper and lower synchronous cutting widths, the cutting wheel motor drives the longitudinal cutting wheel to rotate, and the film is cut longitudinally, and the longitudinal cutting adjustment motor adjusts the linear movement of the movable slider on the stator rail through the adjustment screw to adapt to the film of products with different thicknesses; S9, the discharging motor drives the roller shaft to rotate, thereby driving the roller to rotate, driving the belt to rotate, driving the coated product to move, and the adjusting handle drives the pressure rod seat to move up and down in the pressure rod support seat to adjust the height of the pressure rod; Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the pressure wheel avoidance groove, guide linear rail and guide block on the left and right vertical plates, the up and down running accuracy and running stability of the pressure wheel can be improved, ensuring that the laminating pressure wheel and the laminating power roller are tangent and the left and right forces are evenly distributed, effectively avoiding the problems of poor laminating effect, filming, bubbles and so on caused by uneven force.

[0012] 2. By setting up a two-way laminating support mechanism, the upper and lower layers can be laminated and packaged at the same time, reducing the number of laminating and packaging times and improving the laminating efficiency. By setting up a curling adjustment seat, a width adjustment slot, an anti-curling fixing seat, and an anti-curling limiter, the laminating wrinkles and curling can be effectively prevented from affecting the laminating effect and improving the laminating quality. At the same time, the position of the anti-curling limiter can be easily adjusted for laminating of different widths. The structure is simple and the functionality is strong.

[0013] 3. By setting up a transverse fixed-length cutting mechanism and combining it with the design of a fixed-length sensor, the size control before and after cutting can be accurately controlled, the transverse cutting position can be accurately controlled, the processing accuracy of the equipment can be improved, the waste of lamination can be reduced, and the packaging cost can be reduced.

[0014] 4. By setting up a longitudinal fixed-length cutting mechanism, the cutting wheel seat moves on the stator rail, and combined with the pre-setting of the adjustable supporting vertical plate in the adjustable feeding mechanism, the cutting position of the longitudinal cutting of the coated product can be accurately controlled to improve the processing accuracy. The lower group is fixed on the fixed block, and the upper group is movably set on the directional straight rail, and connected by a screw rod. The cutting height can be adjusted to adapt to products of different heights and improve the application range of the equipment.

[0015] 5. By setting the adjustable support plate seat, adjustable support vertical plate, width-adjusting bearing seat and width-adjusting screw in the adjustable feeding mechanism, the support position can be quickly adjusted according to the product size and width, limiting the freedom of product flow, improving the running accuracy of the product before entering the lamination, and ensuring the running stability.

[0016] 6. By setting the pressing mechanism, the pressing wheel seat, the row of pressing wheels and the guide pressing plate, appropriate pressure is applied to the product to prevent the movement position of the coated product from changing due to unevenness or vibration of the roller parts during the rolling process, thereby affecting the coating quality.

[0017] 7. By setting the discharge mechanism, the pressure rod support seat, pressure rod seat, pressure rod and adjustment handle at the discharge port of the coated product, not only can the stability of the operation of the coated product at the product outlet be improved, but also the height of the pressure wheel can be adjusted to adapt to products of different heights, thereby comprehensively improving the stability of equipment processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings: Figure 1 It is the front view of the present invention; Figure 2 It is a left side view of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 4 for Figure 2 Schematic diagram of the structure of the cross section in the AA direction; Figure 5 It is a rear view of the present invention; Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle B area; Figure 7 for Figure 3 A partial enlarged schematic diagram of the middle C area; Figure 8 for Figure 4 A partial enlarged schematic diagram of the middle D area; Fig. 9 for Figure 3 A partial enlarged schematic diagram of the middle E area; Fig.10 for Figure 3 A partial enlarged schematic diagram of the middle F area; Fig.11 for Figure 2 A partial enlarged schematic diagram of the middle G area; Fig.12 for Figure 1 Schematic diagram of the structure of the cross section in the HH direction; Fig.13 for Fig.12 A partial enlarged schematic diagram of the middle J region; Fig.14 for Figure 2 Schematic diagram of the structure of the cross section in the KK direction; Fig.15 for Fig.14 A partial enlarged schematic diagram of the middle L area; Fig.16 for Figure 3 A partial enlarged schematic diagram of the middle M region; Fig.17 for Figure 4 A partial enlarged schematic diagram of the middle N region; Fig.18 for Figure 3 A partial enlarged schematic diagram of the middle P region; Fig.19 for Fig.15 A partial enlarged schematic diagram of the middle R region; In the figure: 1. Film laminating main body; 101. Welding base; 102. Left vertical plate; 103. Right vertical plate; 104. Top plate; 105. Roller bearing seat; 106. Film laminating power roller; 107. Roller motor seat; 108. Roller motor; 109. Pulley; 110. Belt; 2. Pressing wheel mechanism; 201. Pressing wheel avoidance groove; 202. Guide linear rail; 203. Guide block; 204. Pressing wheel cylinder; 205. Intermediate connecting rod; 206. Floating joint; 207. Film laminating pressing wheel; 3. Film laminating support mechanism; 301. Supporting large vertical plate; 302. Support Angle support seat; 303, rotating motor seat; 304, rotating motor; 305, film rod bearing seat; 306, gas support film rod; 307, film roller; 308, primary auxiliary rod; 309, secondary auxiliary rod; 310, curling adjustment seat; 311, width adjustment slot; 312, anti-curling fixed seat; 313, anti-curling stopper; 4, horizontal fixed-length cutting mechanism; 401, horizontal cutting seat; 402, cutting push cylinder; 403, cutter connection block; 404, cutter seat; 405, horizontal cutter; 406, auxiliary bearing seat; 407, auxiliary guide rod; 5, longitudinal Cutting mechanism; 501, fixed block; 502, directional straight rail; 503, slider; 504, linear motor; 505, stator rail; 506, movable slider; 507, cutting wheel seat; 508, cutting wheel motor; 509, longitudinal cutting wheel; 510, longitudinal cutting adjustment motor; 511, adjusting screw rod; 6, adjustable feeding mechanism; 601, fixed large plate; 602, belt support seat; 603, belt roller seat; 604, conveying belt; 605, conveying motor; 606, fixed support vertical plate; 607, auxiliary support wheel; 608, slide support seat; 6 09, sliding rod; 610, adjustable support plate seat; 611, adjustable support vertical plate; 612, width-adjusting bearing seat; 613, width-adjusting screw rod; 7, pressing mechanism; 701, support plate; 702, support frame; 703, sliding rod cylinder; 704, sliding vertical plate; 705, pressure wheel seat; 706, row pressure wheel; 707, guide pressure plate; 8, discharging mechanism; 801, discharging seat; 802, roller shaft; 803, roller; 804, discharging motor; 805, pressure rod support seat; 806, pressure rod seat; 807, pressure rod; 808, adjustment handle; 9, fixed-length sensor; DETAILED DESCRIPTION Example 1

[0019] 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.

[0020] See also Figure 1-Figure 19 A film packaging device capable of precise cutting at a fixed distance comprises a film coating main body mechanism 1, wherein the film coating main body mechanism 1 comprises a welding base 101, a left vertical plate 102, a right vertical plate 103, a top plate 104, a roller bearing seat 105, a film coating power roller 106, a roller motor seat 107, a roller motor 108, a pulley 109, and a belt 110; the left vertical plate 102 and the right vertical plate 103 are fixedly arranged on the welding base 101 and are arranged symmetrically facing each other; the top plate 104 is fixedly arranged on the left vertical plate 102 and the right vertical plate 103; the roller bearing seat 105 is provided with two groups, each group is provided with a plurality of rollers, and the two groups are symmetrically fixedly arranged on the outer sides of the left vertical plate 102 and the right vertical plate 103 facing each other; the film coating power roller 106 is provided with a plurality of rollers, which are movably arranged between the two groups of roller bearing seats 105, and the axes are parallel in the same horizontal plane, the roller motor seat 107 is fixedly arranged on the left vertical plate 102, and the roller motor 108 is fixedly arranged on the roller motor seat 107, and the left ends of the plurality of groups of the coating power rollers 106 and the ends of the roller motors 108 are fixedly provided with pulleys 109, and are movably connected through the belts 110 to transmit power; when in use, the roller motor 108 rotates, thereby movably connecting through the belts 110 on the left ends of the coating power rollers 106 and the ends of the roller motors 108 to transmit power, thereby driving the coating power roller to rotate; The laminating main body mechanism 1 is fixedly provided with a pressing wheel mechanism 2 for pressing the laminating film and the product; The coating main body mechanism 1 is fixedly provided with a coating support mechanism 3 for supporting the coating.

[0021] In some embodiments, see Figure 7 , Figure 8The pressing wheel mechanism 2 includes a pressing wheel avoidance groove 201, a guide linear rail 202, a guide block 203, a pressing wheel cylinder 204, an intermediate connecting rod 205, a floating joint 206, and a laminating pressing wheel 207; a plurality of groups of pressing wheel avoidance grooves 201 are symmetrically provided on the left vertical plate 102 and the right vertical plate 103, and a plurality of groups of the guide linear rails 202 are symmetrically fixedly arranged on the outer sides of the left vertical plate 102 and the right vertical plate 103, and on one side of the pressing wheel avoidance groove 201, a guide block 203 is movably arranged on each group of the guide linear rails 202 through a slider, so that the guide block 203 can reciprocate up and down along the guide linear rails 202, the pressing wheel cylinder 204 is fixedly arranged on the top plate 104, one end of the intermediate connecting rod 205 is fixedly connected to the output end of the pressing wheel cylinder 204, and the other end is fixedly connected to the guide block 203, and the floating joint 206 is fixedly arranged on the guide linear rails 202. The guide block 203 is away from one end of the intermediate connecting rod 205, and the coating pressure wheel 207 is movably arranged in two groups of floating joints 206 that are symmetrically arranged facing each other; the coating pressure wheel 207 is arranged just above the coating power roller 106; when in use, the pressure wheel cylinder 204 is actuated to drive the guide block 203 to reciprocate up and down along the guide linear rail 202 through the intermediate connecting rod 205, thereby driving the coating pressure wheel 207 on the floating joint 206 to reciprocate up and down along the guide linear rail 202, approaching or moving away from the coating power roller 106; by arranging pressure wheel avoidance grooves, guide linear rails and guide blocks on the left and right vertical plates, the up and down running accuracy and running stability of the pressure wheel can be improved, ensuring that the coating pressure wheel is tangent to the coating power roller and the left and right forces are evenly applied, effectively avoiding problems such as poor coating effect, filming and bubbles caused by uneven force.

[0022] In some embodiments, see Figure 5 , Fig. 9 , Fig.10The coating support mechanism 3 includes a supporting large vertical plate 301, a supporting angle seat 302, a rotating motor seat 303, a rotating motor 304, a film rod bearing seat 305, an air-supported film rod 306, a film roller 307, a primary auxiliary rod 308, a secondary auxiliary rod 309, a curling adjustment seat 310, a width adjustment slot 311, an anti-curling fixing seat 312, and an anti-curling limiter 313; the supporting large vertical plate 301 is fixedly arranged on the welding base 101 through the supporting angle seat 302, and the rotating motor seat 303 is provided with two groups, which are respectively fixedly arranged on the outer side of the supporting large vertical plate 301, one group on the top and one group on the bottom, relative to the coating pressure wheel 207 The film roller 307 is symmetrically arranged in a tangent plane to the film coating power roller 106, the rotating motor 304 is fixedly arranged on the rotating motor seat 303, the film rod bearing seat 305 is fixedly arranged on the side of the supporting large vertical plate 301 away from the rotating motor seat 303, and is concentric with the axis of the rotating motor 304, the air-supported film rod 306 is movably arranged in the film rod bearing seat 305, one end of which is fixedly connected to the shaft end of the rotating motor 304, the film roller 307 is fixedly arranged on the air-supported film rod 306, and each group of the air-supported film rods 306 are respectively provided with a primary auxiliary rod 308 and a secondary auxiliary rod 309 on one side thereof, which are connected to the air-supported film rod 30 6 axes are parallel, the curling adjustment seat 310 is fixedly arranged on the inner side of the supporting large vertical plate 301, between the first-level auxiliary rod 308 and the second-level auxiliary rod 309, the curling adjustment seat 310 is provided with multiple groups of width adjustment long grooves 311, and multiple groups of anti-curling fixing seats 312 are fixedly arranged on the width adjustment long grooves 311, and each group of anti-curling fixing seats 312 is fixedly provided with two anti-curling limiters 313 that are symmetrical facing each other; when in use, the film roller 307 of the required width is sleeved on the air-supported film rod 306, and the air-supported film rod pneumatically tightens and fixes the film roller 307, and the rotating motor 304 rotates to drive the upper and lower groups of the film rollers 307 rotates towards each other, and the coating passes through the first-level auxiliary rod 308 and the two groups of symmetrically arranged anti-curling limiters 313, and then passes through the second-level auxiliary rod 309 to enter the tangent position of the coating pressure wheel 207 and the coating power roller 106; by setting a two-way coating support mechanism, the upper and lower layers are coated and packaged at the same time, which reduces the number of coating packaging times and improves the coating efficiency. By setting a curling adjustment seat, a width adjustment slot, an anti-curling fixed seat, and an anti-curling limiter, the coating wrinkles and curling can be effectively prevented from affecting the coating effect, thereby improving the coating quality. At the same time, the position of the anti-curling limiter can be easily adjusted for coatings of different widths. The structure is simple and the functionality is strong.

[0023] In some embodiments, see Figure 8 , Fig.11The film packaging device capable of precise cutting at a fixed distance also includes a transverse fixed-length cutting mechanism 4, which includes a transverse cutting seat 401, a cutting push cylinder 402, a cutter connecting block 403, a cutter seat 404, a transverse cutter 405, an auxiliary bearing seat 406, and an auxiliary guide rod 407; the transverse cutting seat 401 is fixedly arranged on the welding base 101, the cutting push cylinder 402 is fixedly arranged on the top plate 104, the cutter seat 404 is fixedly connected to the output end of the cutting push cylinder 402 through the cutter connecting block 403, the transverse cutter 405 is fixedly arranged on the cutter seat 404, and the auxiliary bearing seat 406 is provided with multiple groups, The auxiliary guide rod 407 is fixedly arranged on the top plate 104, and is movably arranged in the auxiliary bearing seat 406, and one end is fixedly connected to the cutter seat 404; when in use, the cutting push cylinder 402 is actuated, and the transverse cutter 405 on the cutter seat 404 is driven to move linearly downward along the axis direction of the auxiliary guide rod 407 through the cutter connecting block 403, and returns after contacting the transverse cutting seat 401 to complete the transverse cutting action of the coating; by setting a transverse fixed-length cutting mechanism and combining the design of a fixed-length sensor, the size control before and after cutting can be accurately controlled, the transverse cutting position can be accurately controlled, the processing accuracy of the equipment can be improved, the waste of the coating can be reduced, and the packaging cost can be reduced.

[0024] In some embodiments, see Figure 12-13The film packaging device capable of precise cutting at a fixed distance also includes a longitudinal fixed-length cutting mechanism 5, which includes a fixed block 501, a directional straight rail 502, a slider 503, a linear motor 504, a stator rail 505, a movable slider 506, a cutting wheel seat 507, a cutting wheel motor 508, a longitudinal cutting wheel 509, a longitudinal cutting adjustment motor 510, and an adjusting screw 511; the linear motor 504 is provided with two groups, which are respectively fixedly arranged at one end of the two groups of stator rails 505, and each group of the stator rails 505 is movably provided with two groups of movable sliders 506, and each group of the movable sliders 506 is fixedly arranged There is a cutting wheel seat 507, the cutting wheel motor 508 is fixedly arranged on the cutting wheel seat 507, and a longitudinal cutting wheel 509 is fixedly arranged at the end of the motor shaft, one group of the linear motors 504 is fixedly arranged between the left vertical plate 102 and the right vertical plate 103 through the fixed block 501, and another group of the linear motors 504 is movably arranged between the left vertical plate 102 and the right vertical plate 103 through the directional straight rail 502 and the slider 503, the two groups of the stator rails 505 are arranged in parallel, and the longitudinal cutting wheels 509 on each group of the movable sliders 506 are arranged symmetrically and facing each other, and the longitudinal cutting adjustment motor 510 is fixedly arranged On the top plate 104, one end of the adjusting screw rod 511 is fixedly connected to the longitudinal cutting adjustment motor 510, and the other end is movably connected to the stator rail 505 located on the slider 503 through a nut; when in use, the linear motor 504 drives the movable slider 506 on the stator rail 505 to move linearly, thereby driving the two groups of movable sliders 506 on the same group of stator rails 505 to move towards each other, and the movable sliders 506 on different stator rails 505 move synchronously to adjust different upper and lower synchronous cutting widths, and the cutting wheel motor 508 drives the longitudinal cutting wheel 509 to rotate to perform lamination. The longitudinal cutting is performed, and the longitudinal cutting adjustment motor 510 adjusts the linear motion of the movable slider 506 located on the stator rail 505 through the adjusting screw rod 511 to adapt to the coating of products with different thicknesses; by setting a longitudinal fixed-length cutting mechanism, the cutting wheel seat moves on the stator rail, combined with the pre-setting of the adjustable supporting vertical plate in the adjustable feeding mechanism, the cutting position of the longitudinal cutting of the coated product can be accurately controlled to improve the processing accuracy. The lower group is fixedly set on the fixed block, and the upper group is movably set on the directional straight rail, and is connected by a screw rod. The cutting height can be adjusted to adapt to products of different heights and improve the application range of the equipment.

[0025] In some embodiments, see Figure 14-15The film packaging device capable of precise cutting at a fixed distance also includes an adjustable feeding mechanism 6, which includes a fixed large plate 601, a belt support seat 602, a belt roller seat 603, a conveying belt 604, a conveying motor 605, a fixed support vertical plate 606, an auxiliary support wheel 607, a slide support seat 608, a slide bar 609, an adjustable support plate seat 610, an adjustable support vertical plate 611, a width-adjusting bearing seat 612, and a width-adjusting screw rod 613; the fixed large plate 601 is fixedly arranged on the welding base 101, and the film-coating power roller 106 is on one side. The belt support seat 602 is provided with two groups, which are respectively fixedly arranged on the fixed plate 601 and the film-coating power roller 106. At both ends of the fixed large plate 601, the belt roller seat 603 is fixedly arranged on the belt support seat 602, and the conveying belt 604 is movably connected through two groups of rotating shafts in the belt roller seat 603, and is connected and driven by the conveying motor 605 through a pulley belt; the fixed support vertical plate 606 is provided with two groups, which are respectively fixedly arranged on both sides of the conveying belt 604 and parallel to the movement direction of the conveying belt 604, and multiple groups of auxiliary support wheels 607 are movably arranged on the fixed support vertical plate 606, and the sliding rod support seat 608 is provided with multiple groups, which are fixedly arranged on the fixed large plate 601, and the sliding rod 609 is movably arranged on The axis of the slide support seat 608 is perpendicular to the movement direction of the conveyor belt 604. The adjustable support plate seat 610 is provided with two groups, which are movably set on the slide bar 609 through a slider, and are located outside the two groups of fixed support vertical plates 606. The adjustable support vertical plates 611 are fixedly set on the adjustable support plate seat 610, and are movably provided with multiple groups of auxiliary support wheels 607. The width-adjusting bearing seat 612 is provided with two groups, which are respectively fixedly set on the fixed large plate 601. The width-adjusting screw rod 613 is sleeved in the width-adjusting bearing seat 612, and is driven by a motor and is arranged parallel to the slide bar 609. The two groups of adjustable The support plate seat 610 is movably arranged on the width-adjusting screw rod 613 through a nut; when in use, the width-adjusting screw rod 613 is driven to rotate by the motor, thereby driving the two groups of the adjustable support plate seats 610 to move toward each other, approaching or moving away from the two groups of the fixed support vertical plates 606, limiting the feed width, and the conveying motor 605 drives the conveying belt 604 to rotate, thereby driving the product to enter; by setting the adjustable support plate seat, adjustable support vertical plate, width-adjusting bearing seat, and width-adjusting screw rod in the adjustable feeding mechanism, the support position can be quickly adjusted according to the product size and width, limiting the freedom of product flow direction, and improving the running accuracy of the product before entering the lamination, and the running stability can be improved.

[0026] In some embodiments, see Figure 16-17The film packaging device capable of precise cutting at a fixed distance also includes a pressing mechanism 7, which includes a support plate 701, a support frame 702, a slide cylinder 703, a sliding vertical plate 704, a pressure wheel seat 705, a row of pressure wheels 706, and a guide pressure plate 707; the support plate 701 is fixedly arranged on one side of the left vertical plate 102 and the right vertical plate 103, the support frame 702 is fixedly arranged on the fixed large plate 601, the slide cylinder 703 is fixedly arranged between the support plate 701 and the support frame 702, the sliding vertical plate 704 is fixedly arranged on the movable end of the slide cylinder 703, the pressure wheel seat 705 is fixedly arranged on the sliding vertical plate 704, and the pressure wheel seat 705 is fixedly arranged on the A plurality of groups of pressure rollers 706 are movably provided, the guide pressure plate 707 is fixedly provided on the sliding vertical plate 704, the outer circle of the pressure roller 706 is tangent to the bottom surface of the guide pressure plate 707, and the pressure roller 706 is provided on the upper side of the conveying belt 604; when in use, the pressure roller 706 descends to a position on the upper side of the conveying belt 604 away from the thickness of the product, and the product enters the coating power roller 106 via the conveying belt 604, the pressure roller 706 and the guide pressure plate 707; by providing a pressing mechanism, a pressure wheel seat, a pressure roller and a guide pressure plate, appropriate pressure is applied to the product to prevent the coating product from changing its movement position due to unevenness or vibration of the roller parts during rolling, thereby affecting the coating quality.

[0027] In some embodiments, see Fig.18The film packaging device capable of precise and fixed-distance cutting also includes a discharging mechanism 8, which includes a discharging seat 801, a roller shaft 802, a roller 803, a discharging motor 804, a pressure rod support seat 805, a pressure rod seat 806, a pressure rod 807, and an adjusting handle 808; the discharging seat 801 is fixedly arranged on the welding base 101, and the film coating power roller 106 is away from the side of the adjustable feeding mechanism 6. The roller shaft 802 is provided with two groups, which are movably arranged on the discharging seat 801 respectively, and multiple groups of rollers 803 are fixedly arranged on the roller shaft 802, one group of roller shaft 802 ends is fixedly connected to the discharging motor 804, and the two groups of roller shafts 802 are connected by belts. The pressure rod support seat 805 is provided with two groups, which are fixedly arranged on the discharging seat 801, and the two groups are symmetrically arranged. It is movably arranged in the pressure rod support seat 805 and can move up and down. The pressure rod 807 is movably arranged in the two groups of pressure rod seats 806. The adjusting handle 808 is movably arranged in the pressure rod support seat 805, and one end is fixedly connected to the pressure rod seat 806; when in use, the discharging motor 804 drives the roller shaft 802 to rotate, thereby driving the roller 803 to rotate, driving the belt to rotate, and driving the coated product to move. The adjusting handle 808 drives the pressure rod seat 806 to move up and down in the pressure rod support seat 805 to adjust the height of the pressure rod 807; by arranging the discharging mechanism, the pressure rod support seat, the pressure rod seat, the pressure rod, and the adjusting handle at the discharge port of the coated product, not only can the stability of the operation of the coated product at the product outlet be improved, but also it is convenient to adjust the height of the pressure wheel to adapt to products of different heights, thereby comprehensively improving the stability of equipment processing.

[0028] In some embodiments, see Fig.19 The film packaging device capable of precise distance cutting further comprises a fixed-length sensor 9; two groups of the fixed-length sensors 9 are provided, fixedly provided on a group of the fixed support vertical plates 606, arranged one in front and one behind; when in use, the product passes through the first group of the fixed-length sensors 9 and leaves the first group of the fixed-length sensors 9, and the length of the product is measured, and the second group performs re-measurement data comparison to determine the transverse cutting position of the film; A method for using a film-covering packaging device capable of precise cutting at a fixed distance comprises the following steps: S1, the width adjustment screw rod 613 is driven to rotate by the motor, thereby driving the two groups of the adjustable support plate seats 610 to move toward each other, approaching or moving away from the two groups of the fixed support vertical plates 606, limiting the feed width, and the conveying motor 605 drives the conveying belt 604 to rotate, thereby driving the product to enter; S2, the pressure wheel 706 descends to the position above the conveyor belt 604 at a distance from the thickness of the product, and the product enters the laminating power roller 106 through the conveyor belt 604, the pressure wheel 706 and the guide pressure plate 707; S3, the product passes through the first group of fixed-length sensors 9 and leaves the first group of fixed-length sensors 9, and the product length is measured, and the second group performs re-measurement data comparison to determine the transverse cutting position of the film; S4, the drum motor 108 rotates, thereby transmitting power through the left end of the film-coating power drum 106 and the belt 110 on the pulley 109 fixedly arranged at the end of the drum motor 108, driving the film-coating power drum to rotate; S5, the pressure wheel cylinder 204 is actuated, and drives the guide block 203 to move up and down linearly and reciprocatingly along the guide linear rail 202 through the intermediate connecting rod 205, thereby driving the laminating pressure wheel 207 on the floating joint 206 to move up and down linearly and reciprocatingly along the guide linear rail 202, approaching or moving away from the laminating power roller 106; S6, the film roller 307 of the required width is sleeved on the air-supported film rod 306, the air-supported film rod pneumatically tightens and fixes the film roller 307, the rotating motor 304 rotates, driving the upper and lower groups of the film rollers 307 to rotate towards each other, and the film passes through the first-level auxiliary rod 308, passes through two groups of symmetrically arranged anti-curling limiters 313, and then passes through the second-level auxiliary rod 309 to enter the tangent position between the film pressing wheel 207 and the film power roller 106; S7, the cutting push cylinder 402 is actuated, and the transverse cutter 405 on the cutter seat 404 is driven to move linearly downward along the axis direction of the auxiliary guide rod 407 through the cutter connecting block 403, and returns after contacting the transverse cutting seat 401, completing the transverse cutting action of the film; S8, the linear motor 504 drives the movable slider 506 on the stator rail 505 to move linearly, thereby driving the two groups of movable sliders 506 on the same group of stator rails 505 to move toward each other, and the movable sliders 506 on different stator rails 505 move synchronously to adjust the different upper and lower synchronous cutting widths, the cutting wheel motor 508 drives the longitudinal cutting wheel 509 to rotate, and the film is cut longitudinally, and the longitudinal cutting adjustment motor 510 adjusts the movable slider 506 on the stator rail 505 to move linearly through the adjustment screw 511 to adapt to the film of products with different thicknesses; S9, the discharging motor 804 drives the roller shaft 802 to rotate, thereby driving the roller 803 to rotate, driving the belt to rotate, and driving the coated product to move. The adjustment handle 808 drives the pressure rod seat 806 to move up and down in the pressure rod support seat 805 to adjust the height of the pressure rod 807; Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A film-covering packaging device capable of precise cutting at a fixed distance, characterized in that: The invention comprises a laminating main body mechanism (1), wherein the laminating main body mechanism (1) comprises a welding base (101), a left vertical plate (102), a right vertical plate (103), a top plate (104), a roller bearing seat (105), a laminating power roller (106), a roller motor seat (107), a roller motor (108), a pulley (109), and a belt (110); the left vertical plate (102) and the right vertical plate (103) are fixedly arranged on the welding base (101) and are arranged symmetrically facing each other; the top plate (104) is fixedly arranged on the left vertical plate (102) and the right vertical plate (103); the roller bearing seat (105) is provided with two groups, each group having a plurality of rollers. A plurality of the coating power rollers (106) are provided, and two groups are symmetrically and fixedly arranged on the outside of the left vertical plate (102) and the right vertical plate (103). A plurality of the coating power rollers (106) are provided, and are movably arranged between the two groups of the roller bearing seats (105), and the axes are parallel in the same horizontal plane. The roller motor seat (107) is fixedly arranged on the left vertical plate (102), and the roller motor (108) is fixedly arranged on the roller motor seat (107). The left ends of the plurality of coating power rollers (106) and the ends of the roller motors (108) are fixedly provided with pulleys (109), and are movably connected through the belts (110) to transmit power. The laminating main body mechanism (1) is fixedly provided with a pressing wheel mechanism (2) for pressing the laminating film and the product; A coating support mechanism (3) for supporting the coating is fixedly arranged on the coating main body mechanism (1).

2. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 1, characterized in that: The pressing wheel mechanism (2) comprises a pressing wheel avoidance groove (201), a guide linear rail (202), a guide block (203), a pressing wheel cylinder (204), an intermediate connecting rod (205), a floating joint (206), and a laminating pressing wheel (207); a plurality of groups of pressing wheel avoidance grooves (201) are symmetrically provided on the left vertical plate (102) and the right vertical plate (103); a plurality of groups of the guide linear rails (202) are symmetrically fixedly provided on the outside of the left vertical plate (102) and the right vertical plate (103) and on one side of the pressing wheel avoidance groove (201); a guide block (203) is movably provided on each group of the guide linear rails (202) through a slider, so that the pressing wheel avoidance grooves (201) can be moved by the guide block (203) to move the guide linear rails. The guide block (203) reciprocates linearly up and down along the guide linear rail (202); the pressure wheel cylinder (204) is fixedly arranged on the top plate (104); one end of the intermediate connecting rod (205) is fixedly connected to the output end of the pressure wheel cylinder (204), and the other end is fixedly connected to the guide block (203); the floating joint (206) is fixedly arranged at the end of the guide block (203) away from the intermediate connecting rod (205); the coating pressure wheel (207) is movably arranged in two groups of floating joints (206) that are symmetrically arranged facing each other; the coating pressure wheel (207) is arranged directly above the coating power roller (106).

3. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 2, characterized in that: The laminating support mechanism (3) comprises a supporting large vertical plate (301), a supporting angle seat (302), a rotating motor seat (303), a rotating motor (304), a film rod bearing seat (305), an air-supported film rod (306), a film roller (307), a primary auxiliary rod (308), a secondary auxiliary rod (309), a curling adjustment seat (310), a width adjustment slot (311), an anti-curling fixing seat (312), and an anti-curling stopper (313); the supporting large vertical plate (301) is connected to the supporting angle seat (302), a rotating motor seat (303), a rotating motor (304), a film rod bearing seat (305), an air-supported film rod (306), a film roller (307), a primary auxiliary rod (308), a secondary auxiliary rod (309), a curling adjustment seat (310), a width adjustment slot (311), an anti-curling fixing seat (312), and an anti-curling stopper (313); The support angle seat (302) is fixedly arranged on the welding base (101), and the rotating motor seat (303) is provided with two groups, which are respectively fixedly arranged on the outside of the supporting large vertical plate (301), one group at the top and one group at the bottom, and are symmetrically arranged relative to the tangent plane of the film pressing wheel (207) and the film coating power roller (106). The rotating motor (304) is fixedly arranged on the rotating motor seat (303), and the film rod bearing seat (305) is fixedly arranged on the supporting large vertical plate (3 01) away from one side of the rotating motor seat (303) and concentric with the axis of the rotating motor (304), the air-supported film rod (306) is movably arranged in the film rod bearing seat (305), one end of which is fixedly connected to the shaft end of the rotating motor (304), the film roller (307) is fixedly arranged on the air-supported film rod (306), and each group of the air-supported film rods (306) are respectively provided with a first-level auxiliary rod (308) and a second-level auxiliary rod (309) on one side, which are connected to the air-supported film rod (306) axis, the curling adjustment seat (310) is fixedly arranged on the inner side of the supporting large vertical plate (301), between the first-level auxiliary rod (308) and the second-level auxiliary rod (309), the curling adjustment seat (310) is provided with a plurality of groups of width adjustment long grooves (311), the width adjustment long grooves (311) are fixedly arranged with a plurality of groups of anti-curling fixing seats (312), and each group of the anti-curling fixing seats (312) is fixedly arranged with two anti-curling stoppers (313) facing each other symmetrically.

4. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 3, characterized in that: The film packaging device capable of precise cutting at a fixed distance further comprises a transverse fixed-length cutting mechanism (4), wherein the transverse fixed-length cutting mechanism (4) comprises a transverse cutting seat (401), a cutting push cylinder (402), a cutter connecting block (403), a cutter seat (404), a transverse cutter (405), an auxiliary bearing seat (406), and an auxiliary guide rod (407); the transverse cutting seat (401) is fixedly arranged on the welding base (101), and the cutting push cylinder (402) is fixedly arranged On the top plate (104), the cutter seat (404) is fixedly connected to the output end of the cutting push cylinder (402) through the cutter connecting block (403), the transverse cutter (405) is fixedly arranged on the cutter seat (404), the auxiliary bearing seat (406) is provided in multiple groups and is fixedly arranged on the top plate (104), and the auxiliary guide rod (407) is movably arranged in the auxiliary bearing seat (406), and one end is fixedly connected to the cutter seat (404).

5. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 4, characterized in that: The film packaging device capable of precise distance cutting further comprises a longitudinal fixed-length cutting mechanism (5), wherein the longitudinal fixed-length cutting mechanism (5) comprises a fixed block (501), a directional straight rail (502), a slider (503), a linear motor (504), a stator rail (505), a movable slider (506), a cutting wheel seat (507), a cutting wheel motor (508), a longitudinal cutting wheel (509), a longitudinal cutting adjustment motor (510), and an adjustment screw (511); the linear motor (504) is provided with two groups, which are respectively fixedly arranged at one end of the two groups of stator rails (505), two groups of movable sliders (506) are movably arranged on each group of the stator rails (505), a cutting wheel seat (507) is fixedly arranged on each group of the movable sliders (506), the cutting wheel motor (508) is fixedly arranged on the cutting wheel seat (507), and the electric motor (510) is provided on the cutting wheel seat (507). A longitudinal cutting wheel (509) is fixedly arranged at the end of the machine shaft; one group of the linear motors (504) is fixedly arranged between the left vertical plate (102) and the right vertical plate (103) through the fixed block (501); another group of the linear motors (504) is movably arranged between the left vertical plate (102) and the right vertical plate (103) through the directional straight rail (502) and the slider (503); the two groups of stator rails (505) are arranged in parallel; the longitudinal cutting wheels (509) on each group of movable sliders (506) are symmetrically arranged facing each other; the longitudinal cutting adjustment motor (510) is fixedly arranged on the top plate (104); one end of the adjustment screw rod (511) is fixedly connected to the longitudinal cutting adjustment motor (510); and the other end is movably connected to the stator rail (505) located on the slider (503) through a nut.

6. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 5, characterized in that: The film packaging device capable of precise cutting at a fixed distance further comprises an adjustable feeding mechanism (6), wherein the adjustable feeding mechanism (6) comprises a fixed large plate (601), a belt support seat (602), a belt roller seat (603), a conveying belt (604), a conveying motor (605), a fixed supporting vertical plate (606), an auxiliary supporting wheel (607), a sliding rod support seat (608), a sliding rod (609), an adjustable supporting plate seat (610), an adjustable supporting vertical plate (611), a width-adjusting bearing seat (612), and a width-adjusting screw rod (613); the fixed large plate (601) is fixed The belt support seat (602) is fixedly arranged on the welding base (101), on one side of the coating power roller (106), and has two groups, which are respectively fixedly arranged on the two ends of the fixed large plate (601). The belt roller seat (603) is fixedly arranged on the belt support seat (602). The conveying belt (604) is movably connected through the rotating shafts in the two groups of belt roller seats (603), and is connected and driven by the pulley belt through the conveying motor (605); the fixed support vertical plate (606) is provided with two groups, which are respectively fixedly arranged on the On both sides of the conveyor belt (604), parallel to the movement direction of the conveyor belt (604), a plurality of auxiliary support wheels (607) are movably arranged on the fixed support vertical plate (606), a plurality of slide bar support seats (608) are arranged, fixedly arranged on the fixed large plate (601), the slide bar (609) is movably arranged in the slide bar support seat (608), and its axis is perpendicular to the movement direction of the conveyor belt (604), and the adjustable support plate seat (610) is arranged with two groups, which are movably arranged on the slide bar (609) through a slider, and are located at the two groups. The adjustable support plate (611) is fixedly arranged on the outer side of the fixed support plate (606), and is movably provided with a plurality of auxiliary support wheels (607). Two groups of width-adjusting bearing seats (612) are provided, which are respectively fixedly arranged on the fixed large plate (601). The width-adjusting screw rod (613) is sleeved in the width-adjusting bearing seat (612), and is driven by a motor and is arranged parallel to the sliding rod (609). The two groups of adjustable support plate seats (610) are movably arranged on the width-adjusting screw rod (613) through nuts.

7. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 6, characterized in that: The film packaging device capable of precise cutting at a fixed distance further comprises a material pressing mechanism (7), wherein the material pressing mechanism (7) comprises a support plate (701), a support frame (702), a slide rod cylinder (703), a sliding vertical plate (704), a pressure wheel seat (705), a row of pressure wheels (706), and a guide pressure plate (707); the support plate (701) is fixedly arranged on one side of the left vertical plate (102) and the right vertical plate (103), the support frame (702) is fixedly arranged on the fixed large plate (601), and the slide rod cylinder (703) is fixedly arranged on the support plate (701) and the support frame (702), the sliding vertical plate (704) is fixedly arranged on the movable end of the sliding rod cylinder (703), the pressure wheel seat (705) is fixedly arranged on the sliding vertical plate (704), and a plurality of sets of pressure wheels (706) are movably arranged on the pressure wheel seat (705), the guide pressure plate (707) is fixedly arranged on the sliding vertical plate (704), the outer circle of the pressure wheel (706) is tangent to the bottom surface of the guide pressure plate (707), and the pressure wheel (706) is arranged on the upper side of the conveying belt (604).

8. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 7, characterized in that: The film-coating packaging device capable of precise cutting at a fixed distance also includes a discharge mechanism (8), the discharge mechanism (8) including a discharge seat (801), a roller shaft (802), a roller (803), a discharge motor (804), a pressure rod support seat (805), a pressure rod seat (806), a pressure rod (807), and an adjustment handle (808); the discharge seat (801) is fixedly arranged on the welding base (101), the film-coating power roller (106) is away from the side of the adjustable feeding mechanism (6), the roller shaft (802) is provided with two groups, which are movably arranged on the discharge seat (801), and the roller shaft (802) is fixed on the A plurality of groups of rollers (803) are arranged, the end of one group of roller shafts (802) is fixedly connected to the discharge motor (804), two groups of roller shafts (802) are connected via belts, two groups of pressure rod support seats (805) are arranged, fixedly arranged on the discharge seat (801), the two groups are arranged symmetrically, the pressure rod seat (806) is movably arranged in the pressure rod support seat (805) and can move up and down, the pressure rod (807) is movably arranged in the two groups of pressure rod seats (806), and the adjustment handle (808) is movably arranged in the pressure rod support seat (805), and one end is fixedly connected to the pressure rod seat (806).

9. The film-covering packaging device capable of precise cutting at a fixed distance according to claim 8, characterized in that: The film packaging device capable of precise cutting at a fixed distance further comprises a fixed-length sensor (9); two groups of the fixed-length sensors (9) are provided, fixedly arranged on a group of the fixed support vertical plates (606), arranged one in front and one in the back.

10. The method for using the film-covering packaging device capable of precise cutting at a fixed distance according to claim 9, characterized in that: The steps include: S1, the width adjustment screw rod (613) is driven to rotate by the motor, thereby driving the two groups of adjustable support plate seats (610) to move towards each other, approaching or moving away from the two groups of fixed support vertical plates (606), limiting the feeding width, and the conveying motor (605) drives the conveying belt (604) to rotate, thereby driving the product to enter; S2, the pressure removal wheel (706) descends to a position above the conveyor belt (604) at a distance from the thickness of the product, and the product enters the coating power roller (106) via the conveyor belt (604), the pressure removal wheel (706), and the guide pressure plate (707); S3, the product passes through the first group of fixed-length sensors (9) and leaves the first group of fixed-length sensors (9), the length of the product is measured, and the second group performs re-measurement data comparison to determine the transverse cutting position of the film; S4, the drum motor (108) rotates, thereby transmitting power through the left end of the film-coating power drum (106) and the belt (110) on the pulley (109) fixedly arranged at the end of the drum motor (108), thereby driving the film-coating power drum to rotate; S5, the pressure wheel cylinder (204) is actuated, and drives the guide block (203) to move up and down along the guide linear rail (202) through the intermediate connecting rod (205), thereby driving the laminating pressure wheel (207) on the floating joint (206) to move up and down along the guide linear rail (202) to move closer to or farther away from the laminating power roller (106); S6, the film roller (307) of the required width is sleeved on the air-supported film rod (306), the air-supported film rod pneumatically tightens and fixes the film roller (307), the rotating motor (304) rotates, driving the upper and lower groups of the film rollers (307) to rotate towards each other, and the film passes through the first-level auxiliary rod (308) and then passes through two groups of symmetrically arranged anti-curling limiters (313), and then passes through the second-level auxiliary rod (309) to enter the tangent position between the film pressing wheel (207) and the film power roller (106); S7, the cutting push cylinder (402) is activated, and the transverse cutter (405) on the cutter seat (404) is driven to move linearly downward along the axis direction of the auxiliary guide rod (407) through the cutter connecting block (403), and returns after contacting the transverse cutting seat (401) to complete the transverse cutting action of the coating; S8, the linear motor (504) drives the movable slider (506) on the stator rail (505) to move linearly, thereby driving two groups of movable sliders (506) on the same group of stator rails (505) to move toward each other, and the movable sliders (506) on different stator rails (505) move synchronously to adjust different upper and lower synchronous cutting widths, the cutting wheel motor (508) drives the longitudinal cutting wheel (509) to rotate, and longitudinally cuts the film, and the longitudinal cutting adjustment motor (510) adjusts the linear movement of the movable slider (506) on the stator rail (505) through the adjustment screw rod (511) to adapt to the film of products with different thicknesses; S9. The discharging motor (804) drives the roller shaft (802) to rotate, thereby driving the roller (803) to rotate, driving the belt to rotate, and driving the coated product to move. The adjustment handle (808) drives the pressure rod seat (806) to move up and down in the pressure rod support seat (805) to adjust the height of the pressure rod (807).

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