Rolling-controllable cold stamping device

Abstract

The utility model discloses a rolling controllable cold hot stamping device which comprises a hot stamping unit and a first conveying unit which are connected through hot stamping foil, the first conveying unit comprises an unwinding roller, a winding roller and a clamping conveying roller pair arranged between the unwinding roller and the winding roller, and the hot stamping unit is arranged between the unwinding roller and the winding roller. The clamping conveying roller pair comprises a first guide roller, a second guide roller and a first servo motor, the first servo motor controls the first guide roller to rotate, a clamping position is formed between the second guide roller and the first guide roller, and the first guide roller is made of weak deformation materials. The number of revolutions of the first servo motor can be calculated according to the winding length of the hot stamping foil, and the printing starting point rate and the printing end point rate are accurately controlled by controlling the number of revolutions of the first servo motor.

Description

Technical Field

[0001] The utility model relates to the technical field of cold stamping, in particular to a cold stamping device with controllable roll-feeding. Background Art

[0002] Cold stamping technology refers to the method of transferring hot stamping foil to the printing material using UV adhesive. Print UV adhesive on the printing material (such as base paper), solidify the UV adhesive, and use the pressure roller to laminate the hot stamping foil and the printing material. The excess hot stamping foil is peeled off from the printing material, and the hot stamping foil is transferred to the printing material only at the part coated with adhesive to obtain the required hot stamping image and text.

[0003] In the prior art cold stamping machines, since the transport rollers are all rubber rollers, the deformation of the rubber rollers is often ignored during the calculation process, which easily leads to deviations in the calculation of the stamping distance, and thus deviates from the setting of the starting and ending points of the stamping.

[0004] Therefore, how to make a cold stamping device with controllable roll feeding, calculate the number of revolutions by the guide roller diameter and the stamping length, and accurately control the starting and ending points of printing has become an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] The utility model aims to provide a cold stamping device with controllable rolling, which can calculate the rolling length of the hot stamping foil according to the printing length of the pattern, the interval length between the patterns, the diameter of the first guide roller and the number of patterns, and the number of revolutions of the first servo motor can be calculated by the rolling length of the hot stamping foil, and the number of revolutions of the first servo motor can be controlled, so as to accurately control the starting point and end point of printing.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a cold stamping device with controllable roll feeding, comprising a stamping unit and a first transmission unit connected by a stamping foil, the first transmission unit comprising an unwinding roller, a winding roller, and a clamping transmission pair of rollers arranged between the unwinding roller and the winding roller, the stamping unit is arranged between the unwinding roller and the winding roller, the clamping transmission pair of rollers comprises a first guide roller, a second guide roller and a first servo motor, the first servo motor controls the rotation of the first guide roller, a clamping position is formed between the second guide roller and the first guide roller, and the first guide roller is a weakly deformable material.

[0008] Furthermore, the clamping and conveying pair of rollers also includes a first lifting unit, and a lifting end of the first lifting unit is rotatably connected to the second guide roller.

[0009] Furthermore, the independent transmission unit also includes a second servo motor for controlling the unwinding roller and a third servo motor for controlling the winding roller, and the working torques of the second servo motor and the third servo motor are both smaller than the working torque of the first servo motor.

[0010] Furthermore, the rotation speeds of the second servo motor and the third servo motor are directly proportional to the rotation speed of the first servo motor.

[0011] Furthermore, there are two pairs of clamping and conveying rollers, which are respectively arranged between the unwinding roller and the hot stamping unit and between the winding roller and the hot stamping unit.

[0012] Furthermore, the first guide roller is detachably connected to the first servo motor.

[0013] Furthermore, the first lifting unit is a cylinder.

[0014] The cold stamping device of the utility model calculates the rolling length of the stamping foil according to the printing length of the pattern, the interval length between the patterns, the diameter of the first guide roller and the number of patterns. The number of revolutions of the first servo motor can be calculated by the rolling length of the stamping foil, thereby accurately controlling the starting point and end point of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the cold stamping device;

[0016] Figure 2 It is a structural schematic diagram of a cold stamping device without a side plate;

[0017] Among them, 1. first transmission unit; 111. unwinding roller; 112. winding roller; 113. first lifting unit; 114. first guide roller; 115. second guide roller; 116. synchronous belt pulley; 117. synchronous belt tensioning pulley; 12. second servo motor; 13. third servo motor; 2. second transmission unit; 3. hot stamping unit; 31. hot stamping roller; 32. second lifting unit. DETAILED DESCRIPTION

[0018] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices or methods consistent with some aspects of the utility model.

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to the solutions required as the utility model described in the claims.

[0021] like Figure 1 to Figure 2The utility model shown provides a cold stamping device with controllable roll-feeding, including a stamping unit 3 and a first conveying unit 1 connected by a stamping foil, the first conveying unit 1 including an unwinding roller 111, a winding roller 112, and a clamping conveying pair of rollers arranged between the unwinding roller 111 and the winding roller 112, the stamping unit 3 is arranged between the unwinding roller 111 and the winding roller 112, the clamping conveying pair of rollers includes a first guide roller 114, a second guide roller 115 and a first servo motor, the first servo motor controls the rotation of the first guide roller 114, a clamping position is formed between the second guide roller 115 and the first guide roller 114, and the first guide roller 114 is a weak deformable material In the specific connection, it also includes a second conveying unit 2 for conveying hot stamping foil, and the hot stamping unit 3 includes a hot stamping roller, a heating component for heating the hot stamping roller, and a second lifting component for controlling the lifting of the hot stamping roller. The second conveying unit 2 is located below the hot stamping roller; the second lifting component can control the hot stamping roller to rise and fall, and when the hot stamping roller falls, it can press down the hot stamping foil, so that the hot stamping foil contacts the base paper, and then the hot stamping foil and the base paper are compounded together to form a pattern on the base paper; the heating component can heat the hot stamping roller, and when hot stamping certain printing materials, the hot stamping roller is heated to a certain temperature, which can make the hot stamping effect better. The heating component can be an electromagnetic heating component, or a heating tube arranged inside the hot stamping roller, and of course, it can also be a heating component in other forms. The first guide roller 114 can be made of a weakly deformable material such as an iron roller, and will not be deformed by external force. The second guide roller 115 can be a rubber roller. When the first servo motor drives the first guide roller 114 to rotate, due to the clamping effect of the first guide roller 114 and the second guide roller 115, the second guide roller 115 is driven by the hot stamping foil, so that the hot stamping foil is rolled. Specifically, the rolling length of the hot stamping foil is calculated according to the printing length of the pattern, the interval length between the patterns, the diameter of the first guide roller 114, and the number of patterns. The number of revolutions of the first servo motor can be calculated by the rolling length of the hot stamping foil, so as to accurately control the starting point and end point of printing. The first guide roller 114 is detachably connected to the first servo motor, so that the measurement method of different rolling lengths can be realized by replacing the first guide rollers 114 of different diameters.

[0022] Specifically, the clamping and conveying roller pair also includes a first lifting unit 113, and the lifting end of the first lifting unit 113 is rotatably connected to the second guide roller 115. When specifically connected, the cold stamping machine can have two side walls arranged at intervals; the unwinding roller 111, the winding roller 112, and the clamping and conveying roller pair can be arranged on the side wall; when it is necessary to convey the hot stamping foil, the first lifting unit 113 drives the second guide roller 115 to clamp the hot stamping foil together with the winding roller 112. The first lifting unit 113 is a cylinder or a hydraulic cylinder, and the second guide roller 115 is rotatably connected to the displacement end of the cylinder. In this embodiment, the second guide roller 115 is arranged below the first guide roller 114. When it is necessary to change the hot stamping foil, the cylinder pushes the second guide roller 115 down, and the second guide roller 115 is separated from the first guide roller 114, so as to facilitate the removal and replacement of the hot stamping foil. When the hot stamping foil is replaced, the cylinder drives the second guide roller 115 to rise and clamp the hot stamping foil.

[0023] Specifically, the independent transmission unit further includes a third servo motor 13 for controlling the unwinding roller 111 and a first servo motor for controlling the winding roller 112. The working torques of the third servo motor 13 and the first servo motor are both smaller than the working torque of the second servo motor 12. The first servo motor provides the first guide roller 114 with the main power for transmitting the hot stamping foil, and the second guide roller 115 is driven. The second servo motor 12, the third servo motor 13 and the first servo motor can be installed on the side wall. The first servo motor is controlled by a signal to perform precise forward and reverse movements, and the second servo motor 12 and the third servo motor 13 are set to rotate in a directional manner. The first guide roller 114 and the second guide roller 115 are both rubber rollers. After the first guide roller 114 and the second guide roller 115 clamp the hot stamping foil, when they rotate, the hot stamping foil can be driven to move by friction. The first servo motor forms a transmission connection with the two clamping and transmitting rollers through a transmission structure such as a synchronous belt, a chain, and a gear. Specifically, a synchronous belt pulley 116 may be connected to the output shaft of the first servo motor, and a synchronous belt tensioning wheel 117 is arranged on the side wall, which is connected to the two clamping transmission rollers through the synchronous belt.

[0024] When the hot stamping foil needs to be conveyed in the forward direction, the first servo motor drives the clamping conveying roller to rotate forward, driving the hot stamping foil to be conveyed forward; the set direction of the third servo motor 13 is also forward rotation, which is the same as the direction of the winding roller 112, and is used for winding; the set direction of the second servo motor 12 is reverse rotation, but because the working torque of the second servo motor 12 is smaller than the working torque of the first servo motor, the unwinding roller 111 is rotated forward by the combined action of the first servo motor and the second servo motor 12, and is used for unwinding. At this time, the actual direction of the unwinding roller 111 is opposite to the set direction of the second servo motor 12, and is used to assist the hot stamping foil in a tensioned state.

[0025] When it is necessary to pull back, that is, to drive the hot stamping foil in the reverse direction, the first servo motor drives the clamping and conveying rollers to rotate in the reverse direction, driving the hot stamping foil to be conveyed backward; the set direction of the third servo motor 13 is also forward rotation, but because the working torque of the third servo motor 13 is smaller than the working torque of the first servo motor, the winding roller 112 rotates in the reverse direction under the combined effect to unwind; the set direction of the second servo motor 12 is reverse rotation, and the unwinding roller 111 rotates in the reverse direction under the combined effect of the first servo motor and the second servo motor 12 to rewind.

[0026] Specifically, the rotation speeds of the second servo motor 12 and the third servo motor 13 are in direct proportion to the rotation speed of the first servo motor, so as to maintain the hot stamping rhythm and achieve a consistent web-feeding speed.

[0027] Specifically, there are two pairs of clamping and transmitting rollers, which are respectively arranged between the unwinding roller 111 and the hot stamping unit 3 and between the winding roller 112 and the hot stamping unit 3; the two pairs of clamping and transmitting rollers are respectively used to clamp the hot stamping foil in the unwinding direction and the winding direction, and at the same time, the running length of the hot stamping foil on both sides of the unwinding direction and the winding direction can be calculated respectively.

[0028] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be construed as limiting the essence and scope of the utility model. Various modifications made to the above embodiments by ordinary technicians in this field after reading this specification are all within the scope of protection of the utility model.

Claims

1. A cold stamping device with controllable roll feeding, characterized in that: It includes a hot stamping unit and a first conveying unit connected by hot stamping foil, the first conveying unit includes a unwinding roller, a winding roller, and a clamping conveying pair of rollers arranged between the unwinding roller and the winding roller, the hot stamping unit is arranged between the unwinding roller and the winding roller, the clamping conveying pair of rollers includes a first guide roller, a second guide roller and a first servo motor, the first servo motor controls the rotation of the first guide roller, a clamping position is formed between the second guide roller and the first guide roller, and the first guide roller is a weakly deformable material.

2. A cold stamping device with controllable roll feeding according to claim 1, characterized in that: The clamping and conveying pair of rollers also includes a first lifting unit, and a lifting end of the first lifting unit is rotatably connected to the second guide roller.

3. A cold stamping device with controllable roll-feeding according to claim 1, characterized in that: The independent transmission unit also includes a second servo motor for controlling the unwinding roller and a third servo motor for controlling the winding roller. The working torques of the second servo motor and the third servo motor are both smaller than the working torque of the first servo motor.

4. A cold stamping device with controllable roll-feeding according to claim 3, characterized in that: The rotation speeds of the second servo motor and the third servo motor are directly proportional to the rotation speed of the first servo motor.

5. The cold stamping device with controllable roll-feeding according to claim 1, characterized in that: The number of the clamping and conveying roller pairs is two, which are respectively arranged between the unwinding roller and the hot stamping unit and between the winding roller and the hot stamping unit.

6. The cold stamping device with controllable roll feeding according to claim 1, characterized in that: The first guide roller is detachably connected to the first servo motor.

7. A cold stamping device with controllable roll feeding according to claim 2, characterized in that: The first lifting unit is a cylinder.

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