Gilding press

Abstract

The utility model provides a gilding press and relates to the technical field of printing machinery. The gilding press comprises a rack, a gilding roller, a pressure-bearing roller, a die guide roller and a paper guide roller, wherein the gilding roller, the pressure-bearing roller, the die guide roller and the paper guide roller are mounted on the rack, the die guide roller is used for conveying a gilding film, and a heating unit is arranged in the gilding roller; a first auxiliary heating mechanism and a cooling mechanism are arranged on the rack, the first auxiliary heating mechanism is located between the pressure-bearing roller and the paper guide roller on the feeding side, the cooling mechanism is located between the pressure-bearing roller and the paper guide roller on the discharging side, and the first auxiliary heating mechanism comprises at least one pair of heating rollers symmetrically arranged on the two sides of the ironing paper; a main air duct with one sealed end is formed in the heating roller in the axis direction of the heating roller, and the open end of the main air duct communicates with a hot air generator through an air pipe; a plurality of secondary air ducts communicated with the main air duct and the outside of the heating roller are uniformly formed in the heating roller in the radial direction; the cooling mechanism comprises an air injection assembly and an air draft assembly, and the air injection assembly and the air draft assembly are oppositely arranged and form a cooling channel for the ironing bearing paper to penetrate through.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machinery, in particular to a hot stamping machine. Background Art

[0002] The hot stamping printing process uses heat pressure to transfer electroplated aluminum to transfer the aluminum layer in the electroplated aluminum to the surface of the substrate, so that the corresponding metal pattern appears on the surface of the substrate.

[0003] During hot stamping, the image and text may become blurred, the bottom may be exposed, or the image and text may not be printed at all. The main reasons are: the temperature during hot stamping is too low, the hot stamping temperature of the printing plate is too low to reach the minimum temperature required for the electrochemical aluminum foil to separate from the base and transfer to the substrate; during hot stamping, the hot stamping paper is not completely transferred, causing the image and text to become blurred, the bottom may be exposed, or the image and text may not be printed at all.

[0004] When hot stamping, the hot stamping roller of the existing hot stamping machine is exposed to the air, and the heat it generates is easily lost. Especially in winter, the temperature difference between the air and the hot stamping roller is large, and the heat loss rate of the hot stamping roller is faster, resulting in a relatively unstable temperature of the hot stamping roller, which is prone to low temperature, thereby increasing the probability of the image and text being blurred, exposed or not being hot stamped, affecting the hot stamping quality. At the same time, since the image and text on the surface of the substrate is hot stamped with an electrochemical aluminum foil at a certain temperature, the image and text that have just been hot stamped are unstable. The conventional method is to lengthen the stroke of the hot stamping machine substrate, so that the substrate after hot stamping can cool naturally and the hot stamped image and text forming temperature is reduced. However, lengthening the stroke of the substrate will increase the manufacturing cost of the hot stamping machine, and will also increase the floor space occupied by the hot stamping machine, which has certain use defects. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a hot stamping machine to solve the above technical problems.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A hot stamping machine comprises a frame and a hot stamping roller, a pressure roller, a mold guide roller for conveying hot stamping film and a paper guide roller for conveying hot stamping paper installed on the frame, wherein a heating unit is arranged inside the hot stamping roller; a first auxiliary heating mechanism located between the pressure roller and the paper guide roller on the feed side and a cooling mechanism located between the pressure roller and the paper guide roller on the discharge side are arranged on the frame, wherein the first auxiliary heating mechanism comprises at least one pair of heating rollers symmetrically arranged on both sides of the hot stamping paper, wherein the heating roller is provided with a main air duct sealed at one end along its axial direction, and the open end of the main air duct is connected to a hot air generator through an air duct; the heating roller is evenly provided with a plurality of secondary air ducts connecting the main air duct and the outside of the heating roller along its radial direction; the cooling mechanism comprises an air jet assembly and an air exhaust assembly, wherein the air jet assembly and the air exhaust assembly are arranged relative to each other to form a cooling channel for the hot stamping paper to pass through.

[0008] Preferably, a second auxiliary heating mechanism is provided directly below the pressure roller, and the second auxiliary heating mechanism comprises a heating tank and a plurality of electric heating rods, a heat insulating layer is provided in the heating tank, and a plurality of electric heating rods are evenly arranged on the heat insulating layer.

[0009] Preferably, a driving cylinder is provided below the heating tank, and a movable end of the driving cylinder is connected to the bottom of the heating tank.

[0010] Preferably, the jet assembly includes an air delivery nozzle and a first mounting seat connected to the frame, and the air delivery nozzle is installed in a plurality of mounting slots provided in the first mounting seat and is arranged toward the width direction of the ironing paper.

[0011] Preferably, the exhaust assembly includes a second mounting base connected to the frame, the second mounting base is provided with a plurality of through holes, and fan blades arranged opposite to the gas delivery nozzle are installed in the through holes to form a cooling channel with the gas delivery nozzle.

[0012] Preferably, the frame is further provided with a UV drying lamp, and the UV drying lamp is arranged adjacent to the paper guide roller on the discharge side.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] By adopting this scheme, a first auxiliary heating mechanism is provided. When the substrate passes through, the hot air from the hot air generator is sent from the main air duct to the secondary air duct and then acts on the surfaces of both sides of the substrate to preheat and heat it for the subsequent hot stamping roller. When the substrate reaches under the hot stamping roller, it can also be reheated by the second auxiliary heating mechanism to ensure that its operating temperature is stable and not too low, thereby reducing the probability of image and text being blurred, the bottom being exposed, or hot stamping failure. At the same time, after the substrate is hot stamped, the cooling channel formed by the cooling mechanism is accelerated to enable the substrate to cool naturally, without the need to lengthen the travel of the substrate of the hot stamping machine, thereby further improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a structural schematic diagram of a hot stamping machine of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the heating roller;

[0018] Figure 3 is a schematic diagram of the structure of the cooling mechanism;

[0019] Figure 4 is a structural schematic diagram of the second auxiliary mechanism;

[0020] Figure identification: 1-frame; 2-hot stamping roller; 3-pressure roller; 4-hot stamping film; 5-mold guide roller; 6-hot stamping paper; 7-paper guide roller; 8-first auxiliary heating mechanism; 81-heating roller; 82-main air duct; 83-secondary air duct; 9-cooling mechanism; 91-first mounting seat; 92-gas nozzle; 93-second mounting seat; 94-through hole; 95-fan blades; 10-UV drying lamp; 11-second auxiliary heating mechanism; 111-heating tank; 112-insulation layer; 113-electric heating rod; 114-driving cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] This embodiment provides a hot stamping machine, such as Figure 1As shown, it comprises a frame 1 and a hot stamping roller 2, a pressure roller 3, a mold guide roller 5 for conveying a hot stamping film 4 and a paper guide roller 7 for conveying a hot stamping paper 6 installed on the frame 1, wherein the hot stamping roller 2 is provided with a heating unit; the frame 1 is provided with a first auxiliary heating mechanism 8 located between the pressure roller 3 and the paper guide roller 7 on the feeding side and a cooling mechanism 9 located between the pressure roller 3 and the paper guide roller 7 on the discharging side, as shown in FIG. Figure 2 As shown, the first auxiliary heating mechanism 8 includes at least one pair of heating rollers 81 symmetrically arranged on both sides of the supporting paper 6, and the heating roller 81 has a main air duct 82 sealed at one end along its axial direction, and the open end of the main air duct 82 is connected to the hot air generator through an air duct; the heating roller 81 is evenly provided with a plurality of secondary air ducts 83 connecting the main air duct 82 and the outside of the heating roller 81 along its radial direction; the cooling mechanism 9 includes an air jet assembly and an exhaust assembly, and the air jet assembly and the exhaust assembly are arranged relatively to each other and form a cooling channel for the supporting paper 6 to pass through.

[0025] Working principle: With this solution, a first auxiliary heating mechanism 8 is provided. When the substrate 6 passes through, the hot air from the hot air generator is sent from the main air duct 82 to the secondary air duct 83 and then acts on the two side surfaces of the substrate 6 to preheat and heat it for the subsequent hot stamping roller 2. When the substrate 6 reaches the bottom of the hot stamping roller 2, it can also be reheated by the second auxiliary heating mechanism 11 to ensure that its operating temperature is stable and not too low, thereby reducing the probability of image and text being blurred, the bottom being exposed, or hot stamping failure. At the same time, after the substrate 6 is hot stamped, the cooling channel formed by the cooling mechanism 9 (the gas ejected from the jet component and the exhaust component form a convection channel) accelerates the natural cooling of the substrate, without lengthening the travel of the substrate of the hot stamping machine, further improving convenience.

[0026] like Figure 4 As shown, in this embodiment, a second auxiliary heating mechanism 11 is provided directly below the pressure roller 3, and the second auxiliary heating mechanism 11 includes a heating tank 111 and a plurality of electric heating rods. A heat insulating layer 112 is provided in the heating tank 111, and a plurality of electric heating rods 113 are evenly arranged on the heat insulating layer 112. The connection mode of the plurality of electric heating rods 113 can be connected to the power supply in series or in parallel, which can be selected according to the specific situation. At the same time, the heating arrangement problem of the electric heating rods 113, such as Figure 4 In the figure, the heating groove is a plane, and the heating effect can be optimized from low to high from the middle to both ends of the heating groove 111 to evenly distribute the heat, and the heat insulation layer can make the heat of the electric heating rod 113 more concentrated on the pressure roller 3 directly above, and further conduct it to provide a stable temperature working environment for the pressure roller 2 and the hot stamping roller 3.

[0027] In this embodiment, a driving cylinder 114 is provided below the heating groove 111 , and the movable end of the driving cylinder 114 is connected to the bottom of the heating groove 111 . By adjusting the driving cylinder 114 , the effect of the electric heating rod on the pressure roller 2 and the hot stamping roller 3 can be further adjusted.

[0028] In this embodiment, if Figure 3 As shown, the exhaust assembly includes a second mounting base 93 connected to the frame 1, and a plurality of through holes 94 are provided on the second mounting base 93. Fan blades 95 arranged opposite to the gas nozzle 92 are installed in the through holes 94 to form a cooling channel with the gas nozzle 92. The fan blades 95 can be electrically connected to a power source to actively drive the wind, or the gas ejected from the gas nozzle 92 can drive the fan blades 95 to rotate passively to form convection driving, thereby accelerating the natural cooling of the substrate, without lengthening the travel of the hot stamping machine substrate, and further improving convenience.

[0029] In this embodiment, a UV drying lamp 10 is further provided on the frame 1. The UV drying lamp 10 is arranged adjacent to the paper guide roller 7 on the discharge side to prevent the printed material from being affected by a small amount of condensed water when it is cooled.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hot stamping machine, characterized in that: The invention comprises a frame (1) and a hot stamping roller (2), a pressure roller (3), a mold guide roller (5) for conveying a hot stamping film (4) and a paper guide roller (7) for conveying hot stamping paper (6) installed on the frame (1); the hot stamping roller (2) is provided with a heating unit; the frame (1) is provided with a first auxiliary heating mechanism (8) located between the pressure roller (3) and the paper guide roller (7) on the feeding side and a cooling mechanism (9) located between the pressure roller (3) and the paper guide roller (7) on the discharging side; the first auxiliary heating mechanism (8) comprises at least one pair of heating rollers (81) symmetrically arranged on both sides of the hot stamping paper (6); the heating roller (81) is provided with a main air duct (82) with one end sealed along its axial direction, and the open end of the main air duct (82) is connected to a hot air generator through an air duct; the heating roller (81) is evenly provided with a plurality of secondary air ducts (83) connecting the main air duct (82) and the outside of the heating roller (81) along its radial direction; The cooling mechanism (9) comprises an air jet component and an air exhaust component, wherein the air jet component and the air exhaust component are arranged relative to each other and form a cooling channel for the ironing paper (6) to pass through.

2. A hot stamping machine according to claim 1, characterized in that: A second auxiliary heating mechanism (11) is provided directly below the pressure roller (3), the second auxiliary heating mechanism (11) comprising a heating groove (111) and a plurality of electric heating rods, a heat insulation layer (112) is provided in the heating groove (111), and a plurality of electric heating rods (113) are evenly arranged on the heat insulation layer (112).

3. A hot stamping machine according to claim 2, characterized in that: A driving cylinder (114) is provided below the heating tank (111), and a movable end of the driving cylinder (114) is connected to the bottom of the heating tank (111).

4. A hot stamping machine according to claim 2, characterized in that: The jet assembly comprises an air delivery nozzle (92) and a first mounting seat (91) connected to the frame (1); the air delivery nozzle (92) is mounted in a plurality of mounting slots provided in the first mounting seat (91) and is arranged in a direction facing the width of the ironing paper (6).

5. The hot stamping machine according to claim 3, characterized in that: The exhaust assembly comprises a second mounting seat (93) connected to the frame (1), the second mounting seat (93) being provided with a plurality of through holes (94), and fan blades (95) arranged opposite to the gas delivery nozzle (92) being installed in the through holes (94) and forming a cooling channel with the gas delivery nozzle (92).

6. A hot stamping machine according to claim 4, characterized in that: The frame (1) is also provided with a UV drying lamp (10), and the UV drying lamp (10) is arranged adjacent to the paper guide roller (7) on the discharge side.

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