A hot stamping equipment for packaging paper and its usage method

Abstract

This invention relates to the field of hot stamping technology, and more particularly to a hot stamping equipment and method for packaging paper. The equipment includes a machine body composed of a load-bearing base and a support frame. A cobalt-containing metal foil is mounted on the machine body via the support frame. A hot stamping machine body is mounted on the support frame to apply the cobalt-containing metal foil to the open cardboard box to be hot stamped. A limiting part for placing the open cardboard box to be hot stamped is movably mounted on the load-bearing base, and four circumferentially equidistant support strips are provided in the limiting part. This invention uses a limiting part for the open cardboard box to be hot stamped, allowing the area of ​​the cardboard box containing a polyethylene thermoplastic coating to be hot stamped to rapidly heat to 100-180°C. This ensures that the cobalt-containing metal foil corresponds to the area of ​​the cardboard box containing the polyethylene thermoplastic coating. By incorporating cobalt elements in the metal foil that change color upon contact with human body temperature, the hot stamping area on the packaging paper becomes more artistically distinctive.

Description

Technical Field

[0001] This invention relates to the field of hot stamping technology, and in particular to a hot stamping equipment and method for packaging paper. Background Technology

[0002] Hot stamping on packaging paper is a process that uses heat and pressure to transfer metallic foil onto the surface of packaging paper, forming specific patterns or text. It can significantly enhance the visual texture, grade, and anti-counterfeiting properties of packaging.

[0003] Existing hot stamping operations often employ a process similar to the automatic hot stamping equipment and technology for cigarette box packaging paper proposed in application number CN202411095759.2. This method involves using a hydraulic cylinder to control the hot stamping machine body to press metal foil onto the cigarette box packaging paper. A second roller then pulls the metal foil to peel it off from the packaging paper. However, the connection between the packaging paper and the metal foil relies on pressure applied by a single hydraulic cylinder, which requires a significant force to be applied to the two parts. Furthermore, the hot stamping plate also possesses heat and pressure. Relying entirely on the hot stamping plate to heat and connect the packaging paper and the metal foil requires considerable pressure and a long time, which can easily cause the already thin metal foil to crack. In some cases, excessive heating and pressure can even cause severe deformation of the packaging paper. For example, the hot stamping device for packaging surface processing proposed in application number CN202222816429.0 uses a squeegee to smooth out wrinkles on the surface of the packaging paper as it slides, and a brush to remove dust from the surface as the paper moves forward. By adding a wrinkle-removing structure, wrinkles generated on the surface of the packaging paper during transportation can be smoothed out. However, paper materials used for packaging still have the characteristic of being structurally weak, especially during processing, they are prone to wrinkles and overlapping structural deformations. Using a squeegee can easily scratch and damage the wrinkles, and during the hot stamping process, wrinkles or damage can easily cause uneven heating and stress. The large gaps in the packaging paper itself can also affect the bonding area with the metal foil, which not only affects the stability of the connection between the gold foil and the packaging paper, but also affects the aesthetics of the overall hot stamping layout and the user experience. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the lack of temperature control pretreatment for packaging paper and the low compatibility with gold foil in the prior art affect the quality of hot stamping processing, and to propose a packaging paper hot stamping processing equipment and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot stamping equipment for packaging paper includes a body consisting of a load-bearing base and a support frame. Cobalt-containing metal foil is mounted on the body via the support frame, and a hot stamping machine body is mounted on the support frame to apply the cobalt-containing metal foil to an open cardboard box to be hot stamped.

[0007] The load-bearing base is movably provided with a limiting part for placing the open cardboard box to be hot-stamped. The limiting part is provided with four circumferentially equidistant support bars, and the four support bars can move radially to support the four corners of the open cardboard box to be hot-stamped. The limiting part is also provided with a force plate, and the force plate vertically supports the part of the open cardboard box to be hot-stamped with polyethylene thermoplastic coating.

[0008] The load-bearing bracket is equipped with a preheating section for heating the open cardboard box to be hot-stamped. The preheating section is equipped with a xenon lamp, a voltage regulator and a Fresnel lens. The xenon lamp heats the part of the open cardboard box containing the polyethylene thermoplastic coating to be hot-stamped to 100-180°C through the Fresnel lens.

[0009] Preferably, the load-bearing bracket is a right-angle plate structure, and the load-bearing bracket is fixedly connected to the rear side of the load-bearing base.

[0010] Preferably, the limiting part includes a movable right-angle bracket, a ball screw, a central gear, a traction fixture, and a support fixture.

[0011] The movable right-angle frame is slidably mounted on the load-bearing base in a forward and backward direction. The ball screw is rotatably mounted inside the upper end of the movable right-angle frame. The central gear is keyed to the ball screw. There are four sets of traction fixtures, and the four sets of traction fixtures are connected to the central gear transmission and are used to traction the four support bars to move radially. The support fixtures are movably pulled by the ball screw and are used to traction the lifting, lowering and extending of the force plate.

[0012] Preferably, the force-bearing plate is located between the two support bars at the upper end, and the force-bearing plate is flush with the two support bars at the upper end.

[0013] Preferably, the xenon lamp is electrically connected to the voltage regulator, and the Fresnel lens is located between the xenon lamp and the cardboard box to be hot-stamped located on the limiting part.

[0014] Preferably, the preheating section is further provided with a movable frame and a lifting slider. The movable frame is slidably mounted on the load-bearing bracket, the lifting slider is slidably mounted in the movable frame, and the Fresnel lens is rotatably mounted on the lifting slider.

[0015] Preferably, the cobalt-containing metal foil is in the form of two rolls.

[0016] Preferably, the load-bearing bracket is provided with a shaping part, the shaping part including a limiting truss integrally connected to the load-bearing bracket, and two mounting rollers corresponding to two roll-shaped cobalt metal foils are provided on the left and right ends of the limiting truss. The two mounting rollers are used as a release roll and a traction roll, respectively, and both mounting rollers are provided with positioning fixtures for fixing the roll-shaped cobalt metal foils.

[0017] The load-bearing bracket is also equipped with two tensioned support strips containing cobalt metal foil facing the support rollers of the cardboard box to be hot-stamped on the limiting part.

[0018] Preferably, when the cobalt-containing metal foil is in the form of a strip structure, the cross-sectional structure is an upward-opening C-shape.

[0019] The above-mentioned method of using hot stamping equipment for packaging paper includes the following steps:

[0020] Step S1: With the hot-stamped part of the open cardboard box containing the polyethylene thermoplastic coating facing upwards, the hot-stamped open cardboard box is fitted onto the limiting part. The ball screw is controlled to rotate, and the central gear drives the four support bars to expand radially through four sets of traction fixtures to support the four corners of the open cardboard box to be hot-stamped. At the same time, the support fixture supports the force plate to be raised to support the hot-stamped part of the open cardboard box containing the polyethylene thermoplastic coating.

[0021] Step S2: Two roll-shaped cobalt-containing metal foils are respectively mounted on two mounting rollers as release rolls and traction rolls, and locked and limited by positioning fixtures. Two support rollers are used to apply pressure to the strip-shaped cobalt-containing metal foils, so that the strip-shaped cobalt-containing metal foils are taut and orderly. Then, the traction roll is used to pull the strip-shaped cobalt-containing metal foils in a step-by-step motion.

[0022] Step S3: Stabilize the xenon lamp voltage through the voltage regulator, adjust the horizontal position and tilt angle of the Fresnel lens so that the xenon lamp beam is refracted through the Fresnel lens and shines on the part of the cardboard box with polyethylene thermoplastic coating to be hot-stamped to a temperature of 100-180℃, and the polyethylene thermoplastic coating melts.

[0023] Step S4: Move the limiting part backward until the open cardboard box to be hot-stamped is located below the cobalt-containing metal foil, control the hot stamping machine to run, and apply pressure to the cobalt-containing metal foil on the part of the open cardboard box containing the polyethylene thermoplastic coating to be hot-stamped until a hot stamping pattern is formed.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. This invention employs a limiting part for open cardboard boxes to be hot-stamped. A movable right-angle frame is used to set up traction and support fixtures. By driving four sets of circumferentially equidistant support bars to move radially, the four corners of the open cardboard box to be hot-stamped are supported and limited. At the same time, the force plate is driven to rise to provide force support for the hot-stamped part of the open cardboard box containing the polyethylene thermoplastic coating, ensuring the stability of the open cardboard box.

[0026] 2. This invention utilizes a load-bearing bracket to set up a preheating section, in which a voltage regulator is installed to stabilize and control the xenon lamp. A Fresnel lens that can be raised, lowered, and deflected is installed on a horizontally movable frame. The Fresnel lens refracts the xenon lamp beam, causing the part of the cardboard box to be hot-stamped, which contains a polyethylene thermoplastic coating, to heat up rapidly to 100-180°C. The molten polyethylene thermoplastic coating provides a bonding base for the cobalt-containing metal foil, reducing the possibility of the cobalt-containing metal foil falling off. At the same time, it can improve the environmental protection level by eliminating the use of glue and avoid using a hot stamping plate to press the cobalt-containing metal foil and the cardboard box to be hot-stamped at high temperatures for a long time.

[0027] 3. This invention utilizes a load-bearing bracket to set up two mounting rollers. On the mounting rollers, a positioning fixture is used to lock and fix the roll-shaped cobalt-containing metal foil. At the same time, a traction turntable and a traction crossbar are used to traction drive the lifting plate used to install the elastic lifting block and support rollers. The support rollers apply pressure and shape to the strip-shaped cobalt-containing metal foil located between the release roll and the traction roll, so as to ensure that the cobalt-containing metal foil can correspond to the part of the open carton containing polyethylene thermoplastic coating to be hot-stamped in a taut and orderly state. By setting cobalt elements in the metal foil that can change color when in contact with human body temperature, the hot-stamping part on the packaging paper becomes more artistic. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a hot stamping equipment for packaging paper proposed in this invention;

[0029] Figure 2 This is a bottom view of a hot stamping equipment for packaging paper proposed in this invention;

[0030] Figure 3 This is a schematic diagram of the machine body structure of a hot stamping processing equipment for packaging paper proposed in this invention;

[0031] Figure 4 This is a schematic diagram of the limiting part structure of a hot stamping processing equipment for packaging paper proposed in this invention;

[0032] Figure 5 This is a cross-sectional view of the limiting part structure of a hot stamping equipment for packaging paper proposed in this invention;

[0033] Figure 6This is an enlarged schematic diagram of part A of the hot stamping equipment for packaging paper proposed in this invention;

[0034] Figure 7 This is a schematic diagram of the preheating section of a hot stamping equipment for packaging paper proposed in this invention;

[0035] Figure 8 This is a schematic diagram of the shaping section structure of a hot stamping processing equipment for packaging paper proposed in this invention;

[0036] Figure 9 This is a cross-sectional view of the positioning fixture structure of a hot stamping equipment for packaging paper proposed in this invention;

[0037] Figure 10 This is a schematic diagram of the structure of an open cardboard box to be hot-stamped.

[0038] In the picture:

[0039] 1. Body; 11. Load-bearing base; 12. Load-bearing bracket;

[0040] 2. Limiting part; 21. Moving right-angle bracket; 22. Ball screw; 23. Center gear;

[0041] 24. Traction fixture; 241. Extension plate; 242. Storage slot; 243. Transmission shaft; 244. Side gear; 245. Drive gear; 246. Driven rack; 247. Support bar;

[0042] 25. Support fixture; 251. Countersunk hole for receiving; 252. Moving nut; 253. Load-bearing main rod; 254. Force plate; 255. Limiting tie rod; 256. Limiting elongated hole; 257. Limiting slider; 258. Limiting telescopic rod;

[0043] 3. Preheating section; 31. Xenon lamp; 32. Voltage regulator; 33. Moving frame; 34. Lifting slider; 35. Fresnel lens;

[0044] 4. Cobalt-containing metal foil;

[0045] 5. Shaping section; 51. Limiting truss; 52. Mounting roller;

[0046] 53. Positioning fixture; 531. Threaded rod; 532. Boss wedge block; 533. Guide groove; 534. Elastic wedge head limiting bolt;

[0047] 54. Traction turntable; 55. Vertical frame; 56. Lifting long plate; 57. Traction crossbar; 58. Elastic lifting block; 59. Support roller;

[0048] 6. Hot stamping machine body. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] Reference Figures 1-10 A hot stamping processing device for packaging paper includes a body 1 consisting of a load-bearing base 11 and a load-bearing support 12, as detailed in the attached instruction manual. Figure 1 -Appendix Figure 3 The load-bearing bracket 12 is a right-angle plate structure and is fixedly connected to the rear side of the load-bearing base 11. This facilitates the use of the load-bearing bracket 12 to set up heating and pressing structures for heating and pressing the open cardboard box to be hot-stamped. The machine body 1 is provided with cobalt-containing metal foil 4 through the load-bearing bracket 12. It should be noted that the cobalt-containing metal foil 4 is initially in a roll shape. During the hot-stamping operation, it is pulled and stretched into a strip shape and moves step by step. The hot-stamping machine body 6 is provided on the load-bearing bracket 12 to apply the cobalt-containing metal foil 4 to the open cardboard box to be hot-stamped. The hot-stamping machine body 6 applies pressure to the cobalt-containing metal foil 4 on the open cardboard box to be hot-stamped and achieves the connection between the cobalt-containing metal foil 4 and the open cardboard box to be hot-stamped under appropriate high temperature and high pressure conditions to ensure the hot-stamping effect.

[0051] It should be noted that by adding a thermoplastic coating to the part of the cardboard box to be hot-stamped, the thermoplastic coating melts and becomes sticky when heated to its melting point. After contacting the surface of the cobalt-containing metal foil 4, it cools and solidifies to form a bond. In this way, no additional glue is needed, which not only simplifies the hot stamping process but also saves glue usage, making it easier to recycle the cardboard box and metal foil.

[0052] A limiting part 2 is movably mounted on the load-bearing base 11 for placing the open cardboard box to be hot-stamped. The limiting part 2 has four circumferentially equidistant support bars 247, which move radially to support the four corners of the open cardboard box. The limiting part 2 also has a force-bearing plate 254, which vertically supports the portion of the open cardboard box containing the polyethylene thermoplastic coating to be hot-stamped. The limiting part 2 includes a movable right-angle bracket 21, a ball screw 22, a central gear 23, a traction fixture 24, and a support fixture 25.

[0053] The movable right-angle bracket 21 is slidably mounted on the load-bearing base 11 in a forward and backward direction, as detailed in the instruction manual. Figure 1 With appendix Figure 2The load-bearing base 11 has an elongated hole structure running back and forth. At the same time, the load-bearing base 11 is equipped with a drive cylinder for driving the movable right-angle frame 21 to move step by step along the elongated hole. Under its support, the loading and unloading operations of the open cardboard box to be hot-stamped are realized. The movable right-angle frame 21, which is in the initial position, fits the open cardboard box to be hot-stamped. When it moves to the second position, it is preheated. When it moves to the third position, it is hot-stamped.

[0054] The ball screw 22 is rotatably mounted inside the upper end of the movable right-angle frame 21. It should be noted that the movable right-angle frame 21 is also equipped with a drive motor for driving the ball screw 22 to rotate. The ball screw 22 is divided into two sections: a round rod and a screw rod. The round rod is used to install the central gear 23, and the screw rod is used to install the movable nut 252. The central gear 23 is keyed to the ball screw 22. There are four sets of traction fixtures 24, and the four sets of traction fixtures 24 are connected to the central gear 23 for transmission and are used to pull the four support bars 247 to move radially. The support fixtures 25 are movably pulled by the ball screw 22 and are used to pull the force plate 254 to rise, fall, and extend.

[0055] The traction fixture 24 includes an extension plate 241, a receiving slot 242, a transmission shaft 243, a lateral gear 244, a drive gear 245, and a driven rack 246.

[0056] The extension plate 241 is integrally connected to the upper end of the movable right-angle frame 21. The extension plate 241 is radially arranged and can be configured as a thick hollow plate structure or as two symmetrically distributed single plate structures to rotate and install the transmission shaft 243.

[0057] Storage slot 242 is provided at the corner of the movable right angle frame 21, and the support bar 247 is stored in the storage slot 242 when not in use.

[0058] The transmission shaft 243 is rotatably mounted on the extension plate 241.

[0059] The lateral gear 244 is keyed to the middle of the transmission shaft 243, and the lateral gear 244 meshes with the central gear 23. The lateral gears 244 in the four sets of traction fixtures 24 rotate under the drive of the same central gear 23, thereby driving the transmission shaft 243 to rotate.

[0060] The drive gear 245 is keyed to one end of the transmission shaft 243 and is offset from the side gear 244 to avoid the center gear 23 from colliding with the driven rack 246.

[0061] The driven rack 246 is slidably installed in the upper part of the movable right angle frame 21, and the end of the driven rack 246 extending into the storage slot 242 is fixedly connected to the support bar 247. Under the transmission action of the central gear 23 and the side gear 244, the drive gear 245 and the driven rack 246, the support bar 247 moves radially to expand from the inside to the outside, thereby opening and fixing the hot stamping open cardboard box.

[0062] The support fixture 25 includes a countersunk hole 251, a movable nut 252, a load-bearing main rod 253, a limiting tie rod 255, a limiting elongated hole 256, a limiting slider 257, and a limiting telescopic rod 258.

[0063] The recessed hole 251 is located at the upper end of the movable right-angle frame 21. It should be noted that the force plate 254 in the stored state is connected to the recessed hole 251, which helps to close the movable right-angle frame 21.

[0064] The movable nut 252 is adapted to be installed on the ball screw 22, and a guide rod that is slidably installed in the movable right angle bracket 21 is fixedly connected to the movable nut 252 to guide and limit the movable nut 252, ensuring that the movable nut 252 only performs linear reciprocating movement;

[0065] The main load-bearing rod 253 is pinned to the movable nut 252, and the free end of the main load-bearing rod 253 is pinned to the force-bearing plate 254. The limiting tie rod 255 is pinned to the movable right-angle frame 21, and the limiting tie rod 255 is connected to the middle pin of the main load-bearing rod 253. Due to the traction and limiting effect of the limiting tie rod 255, the main load-bearing rod 253 can only tend to deflect in the vertical direction under the support of the movable nut 252.

[0066] A limiting elongated hole 256 is provided at the upper end of the movable right-angle frame 21. A limiting slider 257 is slidably installed in the limiting elongated hole 256. A limiting telescopic rod 258 is fixedly connected to the force plate 254 and is longitudinally slidably fitted in the limiting slider 257. The limiting elongated hole 256 and the limiting telescopic rod 258 are used to guide and limit the force plate 254, so that the force plate 254 always remains horizontal during the lifting process, so as to closely fit the part of the cardboard box containing polyethylene thermoplastic coating to be hot-stamped.

[0067] The load-bearing bracket 12 is equipped with a preheating section 3 for heating the open cardboard box to be hot-stamped. The preheating section 3 contains a xenon lamp 31, a voltage regulator 32, and a Fresnel lens 35. The xenon lamp 31 heats the area of ​​the open cardboard box containing the polyethylene thermoplastic coating to be hot-stamped to 100-180°C through the Fresnel lens 35. The preheating section 3 also includes a movable frame 33 and a lifting slider 34. The movable frame 33 is horizontally slidably mounted on the load-bearing bracket 12, and the lifting slider 34 is vertically slidably mounted within the movable frame 33. The Fresnel lens 35 is rotatably mounted on the lifting slider 34. The frame 12 is equipped with a track for supporting the horizontal movement of the movable frame 33, and the load-bearing support 12 is equipped with a first cylinder for traction of the movable frame 33. The movable frame 33 is equipped with a second cylinder for traction of the lifting slider 34. At the same time, the lifting slider 34 is equipped with a micro motor for driving the Fresnel lens 35 to deflect, so that the Fresnel lens 35 can be flexibly adjusted in position and angle, ensuring that the beam of the xenon lamp 31 can be accurately focused on the part of the cardboard box containing the polyethylene thermoplastic coating to be hot-stamped under the effect of refraction, thereby preheating it.

[0068] The load-bearing plate 254 is located between the two support bars 247 at the upper end, and the load-bearing plate 254 is flush with the two support bars 247 at the upper end.

[0069] The xenon lamp 31 is electrically connected to the voltage regulator 32, and the Fresnel lens 35 is located between the xenon lamp 31 and the cardboard box to be hot-stamped located on the limiting part 2. The xenon lamp 31 is a gas discharge lamp that, during operation, excites xenon gas through high voltage to ionize and release a high-intensity mixed light containing infrared, visible light, and a small amount of ultraviolet light. Its advantages are:

[0070] Fast heat generation: It can reach the rated power instantly after being powered on, without the need for preheating, making it suitable for high-speed hot stamping scenarios;

[0071] Controllable heat output: By adjusting the input power, the total heat output can be precisely controlled to avoid overheating or insufficient heat output;

[0072] Spectral adaptability: It has a high proportion of infrared radiation, which is easily absorbed by hot stamping foil and converted into heat energy, resulting in high energy utilization.

[0073] The Fresnel lens 35 can be used with a 12cm*12cm square structure. Its core function is to focus light energy, and its advantages are:

[0074] Converging light: Converging the divergent light emitted by the xenon lamp 31 into a beam of parallel light or focusing it on a certain spot or band of light, so that the energy is concentrated on the part of the cardboard box containing the polyethylene thermoplastic coating to be hot-stamped.

[0075] Controlling the heating range: By adjusting the focal length or shape of the Fresnel lens 35, the heating area can be limited to the part of the cardboard box with the polyethylene thermoplastic coating to be hot-stamped, avoiding the surrounding materials from being affected by irrelevant heat.

[0076] Uniformity optimization: The high-quality Fresnel lens 35 can reduce the problem of uneven light intensity distribution, ensuring that the part of the cardboard box containing polyethylene thermoplastic coating to be hot-stamped is heated evenly, avoiding local overheating or missed hot stamping.

[0077] The cobalt-containing metal foil consists of two rolls. It should be noted that by adding cobalt, the hot stamping logo is blue at room temperature, but turns pink when in contact with human body temperature. That is, the color changes when exposed to a temperature of 35-38℃, and returns to blue after cooling, thus creating a variable visual effect that effectively enhances aesthetics and experiential value.

[0078] A shaping part 5 is provided on the load-bearing bracket 12. The shaping part 5 includes a limiting truss 51 integrally connected to the load-bearing bracket 12. At both ends of the limiting truss 51 are mounting rollers 52 corresponding to two coiled cobalt-containing metal foils 4. The two mounting rollers 52 are used as a release coil and a traction coil, respectively. It should be noted that a servo motor for driving the traction coil to rotate in a step-by-step manner is provided at the right end of the limiting truss 51, so that the cobalt-containing metal foil 4 can be wound and unwound in a step-by-step manner. Both mounting rollers 52 are provided with positioning fixtures 53 for fixing the coiled cobalt-containing metal foil 4. The positioning fixtures 53 include a threaded rod 531, a boss wedge block 532, a guide groove 533, and an elastic wedge head limiting bolt 534.

[0079] The threaded rod 531 is threadedly installed in one end of the mounting roller 52, and the boss wedge block 532 is integrally connected to the threaded rod 531. Under the driving action of the threaded rod 531, the boss wedge block 532 moves spirally and telescopically in the mounting roller 52.

[0080] The guide groove 533 is radially formed inside the mounting roller 52.

[0081] The elastic wedge-shaped limiting plug 534 is slidably installed in the guide groove 533, and the elastic wedge-shaped limiting plug 534 and the boss wedge block 532 move against each other. Under the elastic force of the strong spring, the elastic wedge-shaped limiting plug 534 keeps the tendency to retract inward, so as to fit the rolled cobalt-containing metal foil 4 on the mounting roller 52. By driving the elastic wedge-shaped limiting plug 534 to extend out of the mounting roller 52, the rolled cobalt-containing metal foil 4 is locked and fixed.

[0082] The load-bearing bracket 12 is also equipped with two tension support strips containing cobalt metal foil 4 facing the support rollers 59 of the cardboard box to be hot-stamped on the limiting part 2.

[0083] The shaping part 5 further includes a traction turntable 54, a vertical frame 55, a lifting long plate 56, a traction cross bar 57, and an elastic lifting block 58:

[0084] The traction turntable 54 is rotatably installed on the bearing support 12, and an eccentrically arranged traction bolt is integrally connected to the traction turntable 54. The traction cross bar 57 is slidably sleeved in the two lifting long plates 56, and a traction long hole for movably sleeving the traction bolt is formed in the traction cross bar 57. By driving the traction turntable 54 to rotate, the lifting long plate 56 performs a lifting movement along the vertical central axis of the traction turntable 54 to adjust the height position of the support roller 59, realizing a large-range position adjustment.

[0085] The vertical frame 55 is integrally connected to the left and right ends of the limit truss 51, and the lifting long plate 56 is longitudinally slidably installed in the vertical frame 55.

[0086] The elastic lifting block 58 is longitudinally slidably installed on the lifting long plate 56, and the support roller 59 is rotatably installed on the elastic lifting block 58. The elastic lifting block 58 is installed on the lifting long plate 56 through a spring and has a tendency to expand downward, enabling a certain range of telescopic adjustment, so as to adjust the tightness according to the structure of the cobalt-containing metal foil 4, and also being able to perform elastic adjustment during the process of the hot stamping machine main body 6 pressing on the cobalt-containing metal foil 4, avoiding the fracture of the cobalt-containing metal foil 4 during the process of being pressed downward.

[0087] The hot stamping machine main body 6 is mainly composed of a hot stamping plate module that can move up and down. Among them, the hot stamping plate module adjusts the temperature and pressure, so as to drive the cobalt-containing metal foil 4 to be pressed under high temperature and high pressure, making the cobalt-containing metal foil 4 be extruded and adhered to the hot stamping part of the paper box with a polyethylene thermoplastic coating to be hot stamped. At the same time, due to the melting of the thermoplastic coating to form an adhesion effect, the cobalt-containing metal foil adheres more stably and firmly to the paper box to be hot stamped and opened and closed. As an existing technical means in the field of this technology, it will not be elaborated here.

[0088] When the cobalt-containing metal foil 4 is in a strip structure, its cross-sectional structure is a U-shaped with the opening facing upward.

[0089] It should be noted that the specific model specifications of the voltage stabilizer 32 and the hot stamping machine main body 6 need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0090] The functional principle of the present invention can be elaborated through the following operation modes:

[0091] First, unfold the cardboard box to be hot-stamped so that the part containing the polyethylene thermoplastic coating to be hot-stamped faces upward. Place the cardboard box with the hot-stamped opening onto the movable right-angle bracket 21 of the limiting part 2. Control the rotation of the ball screw 22. The central gear 23 drives the four support bars 247 to expand radially through four sets of traction fixtures 24. That is, the central gear 23 drives the transmission shaft 243 to rotate through the lateral gears 244. The transmission shaft 243 drives the driven rack 246 to rotate through the drive gear 245. The movable right-angle frame 21 extends into the storage slot 242, and the support bar 247 supports the four corners of the cardboard box to be hot-stamped. At the same time, the movable nut 252 in the support fixture 25 moves with the rotation of the ball screw 22. Because the limiting rod 255 limits the support, the load-bearing main rod 253 tends to deflect vertically. At the same time, because of the guiding limit of the limiting telescopic rod 258, the supporting plate 254 is raised to support the part of the cardboard box to be hot-stamped with polyethylene thermoplastic coating.

[0092] Secondly, two roll-shaped cobalt-containing metal foils 4 are respectively mounted on two mounting rollers 52 as release rolls and traction rolls. The threaded rod 531 in the positioning fixture 53 drives the boss wedge block 532 to extend spirally into the mounting roller 52. The boss wedge block 532 applies pressure to the elastic wedge head limiting plug 534, so that the elastic wedge head limiting plug 534 extending outward from the mounting roller 52 locks and limits the roll-shaped cobalt-containing metal foil 4 mounted on the mounting roller 52. The two support rollers 59 apply pressure to the strip-shaped cobalt-containing metal foil 4, so that the strip-shaped cobalt-containing metal foil 4 is taut and orderly. Then, the traction roll pulls the strip-shaped cobalt-containing metal foil 4 in a step-by-step movement.

[0093] Then, after power is supplied to the xenon lamp 31, the voltage of the xenon lamp 31 is stabilized by the voltage regulator 32. The moving frame 33 is adjusted to move horizontally along the load-bearing bracket 12. The height position of the lifting slider 34 is adjusted on the moving frame 33. The tilt angle of the Fresnel lens 35 is adjusted on the lifting slider 34 so that the beam of the xenon lamp 31 is refracted by the Fresnel lens 35 and shines on the part of the cardboard box containing the polyethylene thermoplastic coating to be hot-stamped to a temperature of 100-180℃, and the polyethylene thermoplastic coating melts.

[0094] Finally, the limiting part 2 is moved backward until the open cardboard box to be hot-stamped is located below the cobalt-containing metal foil 4. The hot stamping machine body 6 is controlled to run, and pressure is applied to the cobalt-containing metal foil 4 on the part of the open cardboard box containing the polyethylene thermoplastic coating to be hot-stamped until a hot stamping pattern is formed.

[0095] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A kind of packaging paper gilding processing equipment, including by load base (11) with load support (12) The body (1), the body (1) is provided with cobalt-containing metal foil (4) by load support (12), and load support (12) is provided with the gilding machine main body (6) to the opening paper box to be gilded on the opening paper box to be gilded with cobalt-containing metal foil (4), characterized in that: The load base (11) is movably provided with a limiting part (2) for placing the opening paper box to be gilded, four support bars (247) are arranged in the limiting part (2), and the four support bars (247) are radially movable to support the four corner parts of the opening paper box to be gilded, and a force plate (254) is further arranged in the limiting part (2), and the force plate (254) vertically supports the gilding part of the opening paper box to be gilded with polyethylene thermoplastic coating; The load support (12) is provided with a preheating part (3) for heating the opening paper box to be gilded, the preheating part (3) is provided with a xenon lamp (31), a stabilizer (32) and a Fresnel lens (35), the xenon lamp (31) heats the gilding part of the opening paper box to be gilded with polyethylene thermoplastic coating to 100-180℃ through the Fresnel lens (35); The limiting part (2) comprises a movable right-angle frame (21), a ball screw (22), a center gear (23), a traction tool (24) and a support tool (25); The movable right-angle frame (21) is slidably installed on the load base (11) in front and back direction, the ball screw (22) is rotatably installed in the upper end of the movable right-angle frame (21), the center gear (23) is key-connected to the ball screw (22), the traction tool (24) is four groups, and the four groups of traction tools (24) are drivingly connected with the center gear (23) and used for driving the four support bars (247) to move radially, and the support tool (25) is movably drawn by the ball screw (22) and used for drawing the force plate (254) to move up and down; The force plate (254) is located between the two support bars (247) at the upper end position, and the force plate (254) is flush with the two support bars (247) at the upper end position; The xenon lamp (31) is electrically connected with the stabilizer (32), and the Fresnel lens (35) is located between the xenon lamp (31) and the opening paper box to be gilded on the limiting part (2); The preheating part (3) is further provided with a moving frame (33) and a lifting slider (34), the moving frame (33) is transversely slidably installed on the load support (12), the lifting slider (34) is longitudinally slidably installed in the moving frame (33), and the Fresnel lens (35) is rotatably installed on the lifting slider (34); The load-bearing support (12) is provided with tracks for supporting the horizontal movement of the moving frame (33), and the load-bearing support (12) is provided with a first air cylinder for pulling the moving frame (33), the moving frame (33) is provided with a second air cylinder for pulling the lifting slider (34), and the lifting slider (34) is provided with a micro motor for driving the Fresnel lens (35) to deflect, so that the Fresnel lens (35) can be adjusted in position and angle, and the light beam of the xenon lamp (31) can be accurately focused on the polyethylene thermoplastic coating of the to-be-gilded part of the to-be-gilded open carton under the action of refraction.

2. The packaging paper gilding processing apparatus according to claim 1, wherein The load-bearing support (12) is a right-angle plate structure, and the load-bearing support (12) is fixedly connected to the rear side of the load-bearing base (11).

3. The packaging paper gilding processing apparatus according to claim 1, wherein The number of the cobalt-containing metal foil (4) is two in a roll structure.

4. The packaging paper gilding processing apparatus according to claim 3, wherein The load-bearing support (12) is provided with a shaping part (5), which comprises a limiting truss (51) integrally connected to the load-bearing support (12), and the limiting truss (51) is provided with two mounting rollers (52) corresponding to the two roll-shaped cobalt-containing metal foils (4) at the left and right ends, and the two roll-shaped cobalt-containing metal foils are respectively sleeved on the two mounting rollers (52) as release rolls and traction rolls, and the two mounting rollers (52) are respectively provided with a positioning tool (53) for fixing the roll-shaped cobalt-containing metal foil (4). The load-bearing support (12) is further provided with two tension support rollers (59) for supporting the cobalt-containing metal foil (4) in a strip structure.

5. The packaging paper gilding processing apparatus according to claim 4, wherein When the cobalt-containing metal foil (4) is in a strip structure, the cross-sectional structure is a open-upward-shaped.

6. A method of using a packaging paper gilding processing apparatus according to claim 5, characterized by, The use method comprises the following steps: Step S1, the to-be-gilded part of the to-be-gilded open carton with polyethylene thermoplastic coating is upward, the to-be-gilded open carton is sleeved on the limiting part (2), the ball screw (22) is controlled to rotate, the center gear (23) drives the four supporting bars (247) to radially expand and move through the four traction tools (24), to support the four corner parts of the to-be-gilded open carton, and the supporting tool (25) supports the stress plate (254) to lift the to-be-gilded part of the to-be-gilded open carton with polyethylene thermoplastic coating; Step S2, the two roll-shaped cobalt-containing metal foils are respectively sleeved on the two mounting rollers (52) as release rolls and traction rolls, and are locked and limited by the positioning tool (53), and the two supporting rollers (59) are used to press the cobalt-containing metal foil (4) in a strip structure, so that the cobalt-containing metal foil (4) in a strip structure is tight and orderly, and then the traction roll is used to pull the cobalt-containing metal foil (4) in a strip structure to stepwise move; Step S3, the voltage of the xenon lamp (31) is stabilized by the voltage stabilizer (32), the horizontal position and the inclination angle of the Fresnel lens (35) are adjusted, so that the light beam of the xenon lamp (31) is irradiated to the to-be-gilded part of the to-be-gilded open carton with polyethylene thermoplastic coating after refraction by the Fresnel lens (35), and the temperature of the to-be-gilded part is 100-180℃, and the polyethylene thermoplastic coating is melted. Step S4, move the limiting part (2) to the position that the to be gilded open carton is under the cobalt-containing metal foil (4), control the gilding machine main body (6) to run, and press the cobalt-containing metal foil (4) to the to be gilded part of the open carton containing polyethylene thermoplastic coating to form a gilding pattern.

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