758 results about "Digital printing" patented technology

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.

A multiple layered print structure and apparatus to apply a design or image to fabric or cloth is disclosed. The structure may include one or more print layers printed on a substrate and an adhesive layer deposited on the print layer(s). The one or more print layer(s) and adhesive or resin layer may be deposited on the substrate in a pre-set pattern to form the shape profile for the design or image. The print layer(s) include inks or dyes for printing the print features and / or background color(s) of the image or design. The ink may be combined with a binder material to form the print layer(s). In some embodiments, the process includes the step of printing the multiple layered print structure using a combination of digital printing processes simplify the process for printing a design or image on fabric or cloth.

The invention relates to the technical field of intelligent printing production management, and discloses an intelligent digital printing management method based on data processing. According to the method, before a printing task enters actual production, a virtual task sandbox is created for pre-scheduling deduction; in the sandbox, an order is disassembled into atomic processes through a task decomposition model, and a virtual execution agent binding real-time states of equipment and materials is created for each process. A cross-process constraint network is constructed based on proxy simulation to quantify dependency, competition and space-time conflicts between processes. And operating the constraint to meet the solving process, performing dynamic relaxation and adjustment on the network constraint, and outputting a feasible pre-scheduling scheme. And finally, synchronizing the scheme to a real production queue to start production, and collecting actual data to continuously correct the model and the network. According to the method, the risk-free simulation optimization before production and the dynamic quantitative coordination of the production process are realized, and the scheduling precision, the resource utilization rate and the production delivery reliability are improved.

A method for producing engineered stone slabs includes depositing fragments onto a surface and using a height limiting device to disrupt the fragments so a height of the fragments at the highest point from the supporting structure is substantially the same height as the height limiting device from the supporting structure. The method then includes using a digital printing device, in a first digital printing step, to print an image onto at least part of a top and side walls of at least some of the fragments, and then depositing additional composite material onto at least some of the fragments. The method further includes using a digital printing device, in an additional digital printing step, to print an image onto at least part of the additional damp composite material, and then using a press roller to press, flatten and stretch the fragments into a slab.

This invention presents a frequency-domain fluorescence lifetime imaging system, enhancing capabilities with a spatial beam attenuator and pinhole beam splitter. The spatial beam attenuator reshapes any beam into a circular Gaussian beam profile, being compact, cost-effective, with low loss and back reflection. Using digital printing technology, a thin optical film is deposited onto an optical substrate for precise local attenuation of the beam in either transmission or reflection mode. The pinhole beam splitter consists of an optical beam splitter with an active region the size of a pinhole, positioned near the beam's focus, which directs focused light into two paths based on acceptance or rejection by the pinhole. This configuration allows for two detectors to collect photons from both paths concurrently, facilitating dual-mode imaging. Consequently, the system can generate both confocal and conventional non-confocal laser scanning fluorescence lifetime images of the sample at the same time.

The invention belongs to the technical field of UV ink formula design and digital printing application, and particularly relates to scratch-resistant UV ink, a preparation method thereof and application of the scratch-resistant UV ink to digital printing. The scratch-resistant UV ink comprises the following raw materials in parts by weight: 15-25 parts of epoxy acrylate; 10 to 20 parts of polyurethane acrylate; 15 to 25 parts of a bifunctional monomer; 5-10 parts of a monomer with three functional groups and more than three functional groups; 3 to 5 parts of an alpha-hydroxy ketone photoinitiator; 2 to 4 parts of an acyl phosphorus oxide photoinitiator; 2 to 5 parts of organically modified nano silicon dioxide; 0.1 part to 0.5 part of a flatting agent; 0.5 to 1.5 parts of a dispersing agent; 10 to 15 parts of pigment; the bifunctional monomer is tripropylene glycol diacrylate; the monomer with three functional groups and more than three functional groups is trimethylolpropane triacrylate. The ink has pencil hardness greater than or equal to 3H and excellent flexibility, the adhesive force on substrates such as PC, PET, metal and the like reaches 0 level, the printing process is simplified, and the ink is suitable for digital printing in various scenes.

The utility model relates to the technical field of digital printing, and discloses a digital printing product which comprises a printing stock, a first gloss oil layer, a first shimmering powder layer and a first color ink layer which are sequentially stacked from top to bottom, and the printing stock is made of a transparent material. According to the digital printing product, printing is conducted on the back face of the transparent printing stock, the pattern can be protected, it is guaranteed that the product has a good visual effect all the time, the effect of front viewing through back face printing and the effect of front viewing and back face viewing through back face printing can be achieved, the perception effect of the pattern cannot be affected, and the product quality is improved. And a better perception effect can be obtained.

The invention relates to the technical field of image recognition, in particular to a digital printing chromatic aberration automatic detection and adjustment method based on AI image processing, which comprises the following steps of: calibrating actually measured chromatic aberration and parameter offset to construct a lookup table, collecting an image to be detected to calculate real-time chromatic aberration, and calculating the real-time chromatic aberration; and based on the lookup table, extracting the parameter offset of the minimum distance by using the Manhattan distance to generate an adjustment instruction, sending the instruction to adjust the ink, and collecting new data to update the lookup table. According to the method, the color difference vector and parameter offset mapping lookup table is constructed in the calibration stage, direct association of the color deviation and the hardware adjustment instruction is achieved, the real-time color difference vector is rapidly matched with the Manhattan distance in the detection process, the optimal parameter offset is extracted to generate the adjustment instruction, manual interpretation and manual configuration are replaced, and the detection accuracy is improved. And after execution, a new image is collected to update the lookup table, so that the system continuously optimizes and adjusts the strategy, the detection instantaneity and the closed-loop automation level are improved, and accurate and stable color rendition is ensured.

The invention relates to the technical field of printing machines, and particularly discloses a package digital printing machine which comprises a sliding device, a conveying device, a driving device and a driving device. The jet printing trolley comprises a trolley main body and a jet printing mechanism mounted on the trolley main body, and the trolley main body is slidably connected to the first lifting mechanism; the bearing table is arranged below the sliding device, and the bearing table comprises a bearing frame and a guide roller rotationally connected to the bearing frame; the unwinding device is arranged on one side of the bearing table; the winding device is arranged on the other side of the bearing table; wherein the unwinding device is used for releasing coiled materials, the guide roller is used for bearing and conveying the coiled materials released by the unwinding device, and the winding device is used for winding the coiled materials conveyed by the guide roller. The package digital printing machine is suitable for printing of coiled materials, and the printing efficiency is improved.

The invention discloses a physical random anti-counterfeiting generation and identification method, which relates to the technical field of anti-counterfeiting, and realizes high-safety, low-cost and easily-integrated anti-counterfeiting and traceability management by generating a unique physical texture through double-overprint micro-dislocation and combining multi-light-source acquisition, phase feature extraction, self-supervised alignment and dynamic threshold judgment. The system can be seamlessly connected with production management systems such as MES, WMS and the like, and supports full-link digital tracing. A unique physical texture is automatically generated on the basis of digital printing double-overprint micro-dislocation, an exclusive fingerprint is injected into each hang tag, binding with a cloud database is carried out through a two-dimensional code, production end generation, circulation end tracking and consumption end one-key verification are achieved, and safety, economical efficiency and large-scale landing are considered; on the premise that the printing cost is not obviously increased, a unique physical fingerprint which cannot be transferred, is difficult to copy and can be quickly read by a machine is generated for each clothing tag, and credible data mapping which runs through factory delivery, circulation and terminal verification is constructed.

The invention relates to the technical field of textile double-sided printing, in particular to a high-permeability and double-sided positioning printing method for all-cotton towel products, which comprises the following steps: pre-treating all-cotton towel gray cloth, including desizing, scouring and bleaching procedures; padding the treated gray cloth in slurry containing urea, sodium bicarbonate, anhydrous sodium sulphate and a penetrant, and then drying and sizing; printing on the front surface of the towel by adopting a digital printing machine, and spraying a penetrating agent with the surface tension of 25-35mN / m to a printing area through an independent jet printing channel, so as to promote the dye to fully permeate to the back surface of the fabric and form a clear pattern outline; according to the invention, an image acquisition system composed of an industrial camera, an annular LED coaxial light source and a polarization filter captures fabric back pattern contour features in real time, and generates a translation, rotation and zooming transformation matrix based on an image registration algorithm; in combination with closed-loop feedback control of the digital printing machine, the positioning precision is improved by more than 75% compared with a traditional method.

The invention belongs to the technical field of digital printing heat transfer printing materials, and particularly relates to a static-free loose-powder DTF transfer printing film and a preparation method thereof. The invention aims to solve the problem of contradiction among antistatic function, ink adsorption and peel strength of the current DTF transfer film. According to the invention, the ionic liquid antistatic agent coated by the polymer microcapsule is dispersed in the water-based resin adhesive to form the lower antistatic network structure layer; meanwhile, the crystallization behavior of the crystalline polyester hot melt adhesive resin taking bio-based 2, 5-furandicarboxylic acid as a rigid component is regulated and controlled through surface modified boron nitride nanosheets, a phase separation curing process is utilized, so that an antistatic network stably exists at the lower part of the coating, and hot melt adhesive resin microcrystals are selectively enriched on the outermost surface of the coating; and a thermally induced phase change bonding layer is formed, so that no static electricity disturbs powder in the printing and powder scattering processes.

The invention discloses a large digital printer control method and system based on artificial intelligence, and relates to the technical field of digital printer control, and the method comprises the steps: carrying out the sorting processing of all unexecuted tasks of a large digital printer, and determining a priority task set of the large digital printer; and carrying out information matching processing on the priority task set of the large digital printer, and determining a first priority task to be processed. According to the method, time comparison analysis is carried out on all completed tasks of the large-scale digital printing machine, priority order number types are determined, then classification processing is carried out on all uncompleted tasks of the large-scale digital printing machine according to the priority order number types, a priority task set of the large-scale digital printing machine is determined, and finally, the priority task set of the large-scale digital printing machine is determined. Information matching processing is conducted on the priority task set of the large digital printing machine, the first priority task to be processed is determined, and therefore it is guaranteed that orders with urgent processing time can be processed in advance, and it is guaranteed that the orders can be completed on time.

The utility model relates to the technical field of digital printing equipment, in particular to a driving device of a hollow heating adsorption tube, which comprises a platform, an adsorption tube, a driving roller, a driving component and a transmission component, the output end of the driving component is connected with a driving shaft and the transmission component, the driving roller is sleeved outside the driving shaft, and the transmission component is connected with the adsorption tube; the adsorption pipe is arranged at the front end of the platform, and the driving roller is arranged at the rear end of the platform; the transmission assembly comprises a first synchronous belt assembly and a second synchronous belt 523 assembly. By means of high-precision synchronous belt transmission and servo motor closed-loop control, the material film conveying speed is stable, tension is uniform, the stretch rate is controlled within 0.5%, the quality problems of pattern distortion, size deviation and the like caused by tensile deformation are effectively avoided, the product consistency and yield are improved, and the equipment operation and maintenance cost and energy consumption are reduced.

The invention belongs to the technical field of computer vision, and discloses a digital printing defect detection method and device based on a multi-head cooperation mechanism, and the method comprises the steps: obtaining a to-be-detected digital printing image slice; inputting the to-be-detected digital printing image slice into a pre-trained digital printing defect detection model based on multi-head collaboration to obtain a defect detection result; the digital printing defect detection model comprises a backbone network, an encoder module, a decoder module and an output module, wherein the backbone network is used for extracting a multi-scale feature map of a digital printing image slice to be detected, and the backbone network is an improved network in which multi-head attention, deep separable convolution, deformable attention, local attention and sliding window attention are introduced into a ResNet network. According to the method, the detection precision of a digital printing defect detection model on microdefects and fine texture defects is remarkably enhanced, and the false detection rate and the omission ratio of complex background interference and irregular pattern deformation scenes are reduced.

The utility model provides a fabric conveying device of a digital printing machine, which relates to the technical field of fabric conveying and comprises a base, a dust removal mechanism is arranged above the base and comprises a dust cover, the lower end of the dust cover is fixedly connected with the upper end of the base, and symmetrically distributed through grooves are formed in two sides of the dust cover. By means of the dust removal mechanism, a high-pressure nozzle of the dust removal mechanism obliquely blows air through a bent pipe, dust and impurities of fabric are accurately stripped, the dust removal mechanism is matched with the dust suction hopper, an air bellow and a filter screen, floating dust is rapidly collected and filtered, secondary pollution is avoided, an exhaust fan accelerates airflow circulation, the dust removal efficiency is improved, and the dust removal efficiency is improved. A servo electric cylinder in the leveling mechanism drives a movable elastic compression roller to adapt to fabrics with different thicknesses, a pressure sensor monitors extrusion force in real time, it is guaranteed that dust removal is convenient when the fabrics are conveyed in a tight mode, damage to the fabrics is avoided, and therefore the effect of improving the fabric printing quality is achieved.

The utility model discloses a temperature control device for a printing nozzle of a digital calico printing machine, which comprises a trolley bottom plate, a water tank fixedly connected to the top of the trolley bottom plate, a liquid level sensor inserted into the top of the water tank, a sound alarm connected to one side of the water tank through threads, and a control mechanism connected to the top of the trolley bottom plate through threads. Notches are evenly formed in the trolley bottom plate, nozzles are connected to the bottoms of the inner walls of the notches through threads, a cooling mechanism is arranged in the trolley bottom plate, temperature sensors are arranged in the nozzles, a fixing plate is fixedly connected to the top of the trolley bottom plate, a micro water pump is connected to the top of the fixing plate through threads, and silica gel heating pieces are bonded to one sides of the nozzles. The protection box is fixedly connected to the bottom of the trolley bottom plate, the microcontroller is fixedly connected to the inner wall of the protection box, and the top cover is slidably connected to the bottom of the protection box. According to the utility model, not only is the problem of insufficient refrigeration continuity solved, but also the temperature of the digital printer nozzle can be accurately controlled.

The utility model discloses a digital printing take-up and pay-off mechanism which comprises two frames, a take-up roller, a support and a guide roller, the number of the frames is two, supporting legs are installed at the two ends of the bottoms of the two frames, the take-up roller and the guide roller are installed between the two frames respectively, a gap is formed between the take-up roller and the guide roller, a connecting rod is arranged on one side of each frame, and the connecting rod is connected with the support. A driving assembly is installed on the connecting rod and comprises a driving motor and further comprises a linear guide rail assembly, a limiting blocking piece, a rear limiting sensor and a front limiting sensor. Through cooperation of an expansion roller, a distance measuring sensor, a driving assembly, a rear limiting sensor, a front limiting sensor and a guide roller, the distance measuring sensor measures the linear distance from the expansion roller to the outer diameter face of winding paper of a winding roller in real time, the linear distance from the expansion roller to the outer diameter face of the winding paper in the horizontal direction is adjusted through a driving motor, and it is guaranteed that in the winding process, the winding paper is not damaged. The wrap angles of the expansion roller and the winding roller are fixed, and the distances in the vertical direction are the same, so that the constant tension of the winding on the material is effectively kept.

The utility model relates to the technical field of digital printing, and discloses a pressing device for three-dimensional digital printing, which comprises a base, the surface of the base is rotatably connected with a rotating table, the surface of the base is fixedly connected with a support, the bottom surface of the support is provided with a pressing assembly, the pressing assembly comprises a C-shaped plate, and the C-shaped plate is fixedly connected with the rotating table. The C-shaped plate is rotationally connected to the bottom face of the support, the bottom face of the C-shaped plate is slidably connected with two sets of symmetrically-arranged moving seats, the bottom faces of the moving seats are fixedly connected with a transverse plate, a groove is formed in the bottom face of the transverse plate, and two sets of symmetrically-arranged sliding blocks are slidably connected to the interior of the groove. According to the pressing assembly, the pressing plate is driven by the electric telescopic rod to press downwards, so that the surface of a product is pressed, the C-shaped plate is driven by the third motor to rotate, the pressed product and the rotating table are driven by the whole pressing assembly to rotate, and therefore the product can be evenly dried.

The invention relates to a pre-treatment device (102) for pre-treating at least one container (5) having a longitudinal axis (C) with an outer surface to be subjected to inkjet digital printing, comprising a plasma emission device, a worktable (2) supporting at least one support spindle (6) supporting at least one container (5), wherein the worktable (2) has a rotation axis (L), wherein the spindle (6) has an axis (M) oriented radially with respect to the rotation axis (L) of the worktable (2), wherein the worktable (2) is configured to carry the spindle (6) and park it at an exposed position at which the outer surface of the container (5) is exposed to the plasma.

The invention belongs to the field of automobile interior manufacturing, and discloses an automobile interior real wood surface digital printing process which comprises the following steps: S1, preparing a base material: selecting a wood veneer of 0.3-0.6 mm, cutting the wood veneer, polishing, spraying water for humidifying and mechanically leveling; the surface of the wood veneer is colored and sprayed with a transparent resin protection layer, then the surface of the protection layer is treated through a plasma surface treatment technology, and the surface energy and the chemical activity of the protection layer are improved; s3, digital printing: coating the surface of the treated protective layer with a bottom coating liquid, printing a pattern by using digital jet printing equipment, and then carrying out UV curing; s4, interior trim part forming, wherein the printed and cured wood veneer is attached to the automobile interior trim plastic base material at the temperature of 55-60 DEG C; and S5, surface layer protection: applying transparent protective finish paint on the surface of the laminated product. The process can solve the problems that the printing definition of an ink layer on the real wood surface of the existing automotive trim is low, and the ink layer is easy to peel, wrinkle and bloom in the processing or using process.

The utility model discloses a digital calico printing machine nozzle cleaning device, which relates to the technical field of calico printing machine nozzle cleaning, and comprises a calico printing machine body, the calico printing machine body comprises a controller and an ink jet seat, the digital calico printing machine nozzle cleaning device further comprises a cleaning barrel fixedly connected to the upper surface of the calico printing machine body through screws, the left side and the right side of the cleaning barrel are each fixedly connected with a support and two fixing rods, the upper surfaces of each pair of fixing rods are each fixedly connected with a connecting plate, and the fixing frames can compress two springs in the moving process; clean water mixed with a cleaning agent is contained in the cleaning barrel, the lower ends of the roller brushes make contact with the clean water so that the roller brushes can be in a saturated state, the roller brushes are driven to rotate along with movement of the ink jet base, namely the ink jet area is wetted, the roller brushes are attached to the surface of the ink jet area all the time through the design of the two springs, and therefore it is guaranteed that the ink jet area makes effective contact with the cleaning agent; and a guarantee is provided for subsequent cleaning.

The utility model discloses a paperboard edge warping prevention device of a scanning type digital printing machine, which comprises a printing platform, and further comprises a steam spray humidifying device, a first linear sliding block movement mechanism and a second linear sliding block movement mechanism which are respectively arranged above the printing platform in a crossing manner along the X direction and are arranged above the printing platform in the Y direction, the second linear sliding block movement mechanism is located between the steam spraying humidification device and the first linear sliding block movement mechanism, and the second linear sliding block movement mechanism can ascend and descend. The first linear sliding block movement mechanism and the second linear sliding block movement mechanism are each provided with a plurality of sliding blocks capable of sliding in the X direction, and the sliding blocks in the first linear sliding block movement mechanism and the sliding blocks in the second linear sliding block movement mechanism are connected with spring steel paper pressing pieces in a one-to-one correspondence mode. The multi-layer warped paperboard flattening device can be suitable for flattening work of multi-layer warped paperboards and has the advantage of being good in flattening effect.

In a method for operating a digital printing press, sheets (4) are aligned in an alignment station (1) and then printed in a printing station (2). The sheets (4) are detected in the alignment station (1) by means of first sensors (11, 12) and aligned by means of alignment rollers (15, 16). After alignment in the alignment station (1), the sheets (4) are detected again by means of second sensors (22, 23), and signals from the second sensors (22, 23) are used to control the alignment station (1). Furthermore, a digital printing press suitable for carrying out this operating method has been provided.

The utility model discloses an adjusting rack of a digital printing machine. The adjusting rack comprises a main rack and a supporting frame, wherein the main rack is not connected with the supporting frame; an adjusting mechanism is arranged at the top of the supporting frame, the first cross beam and the second cross beam are arranged on the adjusting mechanism, and the first cross beam and the second cross beam are kept parallel and aligned by adjusting the adjusting mechanism. The first cross beam and the second cross beam are both arranged above the adjusting mechanism, the positions of the cross beams can be adjusted through the adjusting mechanism, and therefore it is guaranteed that the first cross beam and the second cross beam are parallel and aligned, the printing precision is effectively guaranteed, and meanwhile the whole rack is convenient to assemble and disassemble. The supporting frame and the first cross beam and the second cross beam form a portal frame type structure, the first cross beam and the second cross beam form a portal frame type structure independently, the machining precision can be guaranteed, the adjusting rack can be installed with traditional flat screen and rotary screen printing equipment in a matched mode, the traditional printing equipment is upgraded, and the production efficiency is improved. And the energy consumption of traditional printing equipment is reduced.

Provided is a method for manufacturing a printing sheet for digital printing using a screen yarn woven with a polyester monofilament capable of directly outputting (printing) by a digital printing machine (a digital inkjet plotter, a printer, etc.) and a printing sheet for digital printing according to the same, and more particularly, to a method for manufacturing a printing sheet for digital printing using a screen yarn woven with a polyester monofilament by a post-processing including first and second coating processes, a compression process, a drying process, a side cutting process, and a winding process and a printing sheet for digital printing manufactured by the same.

The utility model discloses a printing positioning device of digital printing machine, include: printing machine main part, including frame shell, display screen, control button, article board and printing export, display screen is located frame shell's upper end, control button is located frame shell's upper end, article board is located frame shell's one side, positioning component sets up article board's upper end, including fixed in article board bottom's support frame, and the middle part of support frame is connected with double -end cylinder, can solve the following insufficient that current digital printing machine paper positioning technique exists generally, first, overdependence on manual operation, and positioning process is time -consuming and labor -intensive, and the degree of automation is low, second, manual positioning or adjustment is time -consuming, and the whole printing efficiency is influenced, especially when more obvious in single frequency, finally, for the paper of different size, the adjustment positioning device is inconvenient, and the multifunctionality of equipment is affected.

The utility model relates to the technical field of tableware printing, in particular to an automatic printing device for digital jet printing of tableware, which comprises a conveying unit, an automatic box dividing unit, a plasma surface treatment unit and a digital jet printing unit which are sequentially erected above the conveying unit. The automatic box separating unit comprises an adjusting mechanism and four discharging mechanisms, and the four discharging mechanisms are fixedly installed on the adjusting mechanism. The feeding mechanism has the advantages that by arranging the lengthening plates, more meal boxes can be placed among the four feeding mechanisms, when the number of the meal boxes among the four feeding mechanisms is reduced and the height of the stacked meal boxes is lower than the bottom ends of the lengthening plates, one lengthening plate can be pulled out and taken down, then the meal boxes continue to be stacked among the four feeding mechanisms, and the meal boxes can be placed among the four feeding mechanisms. After the meal boxes are stacked, the lengthened plate which is taken down is remounted to the original position, so that the problem that materials need to be placed frequently is avoided, and filling is facilitated.

The utility model relates to the technical field of digital printing, and discloses a digital printed matter printing clamping tool which comprises a base, two sets of symmetrically-arranged grooves are formed in the surface of the base, clamping assemblies are arranged in the grooves, each clamping assembly comprises a sliding block, the sliding blocks are connected in the grooves in a sliding mode, and the sliding blocks are arranged in the grooves in a sliding mode. The two sets of sliding blocks are in threaded connection through a two-way threaded rod, clamping plates are fixedly connected to the surfaces of the sliding blocks, two sets of symmetrically-arranged movable grooves are formed in the side walls of the clamping plates, movable bases are slidably connected into the movable grooves, through holes are formed in the side walls of the movable bases, and lead screws are in threaded connection with the interiors of the through holes; and the side wall of the moving seat is fixedly connected with a side plate. The pressing plate moves downwards under the action of the reset spring, pressure is applied to the surface of the paper box, the edge of the paper box is prevented from tilting, the protection effect is achieved through the rubber pad, and indentations are prevented from being left on the surface of the paper box.