Hot stamping foil conveying device and cold stamping machine

Abstract

The hot stamping foil conveying device comprises an independent conveying unit, the independent 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 clamping conveying roller pair comprises a first lifting device, a fixed roller and a lifting roller. The distance between the fixed roller and the lifting roller is controlled, the fixed roller and the lifting roller are controlled to clamp a hot stamping foil, when a hot stamping foil roll needs to be replaced, the fixed roller and the lifting roller are controlled to be far away from each other, the hot stamping foil roll can be replaced, and the hot stamping foil roll can be conveniently replaced. Therefore, the hot stamping foil can be taken out and replaced conveniently, and the efficiency of replacing the hot stamping foil roll is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold stamping, in particular to a stamping foil conveying device and a cold stamping machine. 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 compound the hot stamping foil with 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] When replacing the hot stamping foil roll in the existing cold stamping machine, the hot stamping foil roll needs to be removed from the unwinding roller, the winding roller and the clamping device as a whole. However, since the hot stamping foil roll is affected by the clamping device, it is not easy to remove the hot stamping foil roll and it is not easy to install it.

[0004] Therefore, how to make a hot stamping foil conveying device that can facilitate the removal and replacement of the hot stamping foil during the replacement process and improve the efficiency of replacing the hot stamping foil roll has become a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a hot stamping foil conveying device and a cold stamping machine, which can control the distance between a fixed roller and a lifting roller to control the clamping of the fixed roller and the lifting roller on the hot stamping foil. When the hot stamping foil roll needs to be replaced, the fixed roller and the lifting roller are controlled to move away from each other, thereby facilitating the removal and replacement of the hot stamping foil and improving the efficiency of replacing the hot stamping foil roll.

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

[0007] The utility model provides a hot stamping foil conveying device, comprising an independent conveying unit, the independent conveying unit comprising a unwinding roller, a winding roller, and a clamping conveying roller pair arranged between the unwinding roller and the winding roller, the clamping conveying roller pair comprising a first lifting unit, a fixed roller and a lifting roller, the lifting roller is rotatably connected to the displacement end of the first lifting unit, and a clamping position is formed between the fixed roller and the lifting roller.

[0008] Furthermore, the first lifting unit is a cylinder, and the lifting roller is rotatably connected to the displacement end of the cylinder.

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

[0010] Furthermore, the independent transmission unit also includes a rotatably arranged pair of roller structures and a return structure for controlling the pair of roller structures to return to their original positions; the pair of roller structures includes two first tensioning rollers that are spaced apart.

[0011] A cold stamping machine comprises the above-mentioned hot stamping foil conveying device, and also comprises a hot stamping roller device and a conveying device for conveying printing materials, wherein the unwinding roller and the winding roller are respectively located on both sides of the hot stamping roller device, and the number of the clamping conveying roller pairs is two, which are respectively arranged between the unwinding roller and the hot stamping roller device and between the winding roller and the hot stamping roller device.

[0012] Furthermore, the ironing roller device includes an ironing roller and a second lifting unit for controlling the lifting and lowering of the ironing roller.

[0013] Furthermore, the hot stamping foil conveying device also includes a common auxiliary conveying unit arranged at the hot stamping front part of the hot stamping roller device, the number of the independent conveying units is at least two, and the common auxiliary conveying unit is used to assist the synchronous conveying of the hot stamping foil of each independent conveying unit, and the common auxiliary conveying unit includes a second tensioning roller and a third lifting unit, and the second tensioning roller is rotatably connected to the displacement end of the third lifting unit.

[0014] Furthermore, the ironing roller device also includes a heating unit for heating the ironing roller.

[0015] The hot stamping foil conveying device and cold stamping machine of the utility model control the distance between the fixed roller and the lifting roller. When the hot stamping foil needs to be conveyed, the first lifting unit drives the lifting roller to clamp the hot stamping foil together with the winding roller. When the hot stamping foil roll needs to be replaced, the fixed roller and the lifting roller are controlled to move away from each other, so that the hot stamping foil can be taken out easily, thereby improving the efficiency of replacing the hot stamping foil roll.

[0016] In the cold stamping machine of the utility model, each independent transmission unit can independently control the transmission of a hot stamping foil; the common auxiliary transmission unit is used to assist the synchronous transmission of each hot stamping foil; when the hot stamping roller is raised, a hot stamping foil can be independently controlled to be pulled back, thereby making fuller use of the hot stamping foil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the hot stamping foil conveying device;

[0018] Figure 2 This is a structural diagram of a cold stamping machine without a side panel;

[0019] Among them, 1. Independent transmission unit; 111. Unwinding roller; 112. Winding roller; 113. First lifting unit; 114. Fixed roller; 115. Lifting roller; 116. Synchronous belt pulley; 117. Synchronous belt tensioning pulley; 12. First servo motor; 13. Second servo motor; 14. Third servo motor; 15. Roller structure; 151. First tensioning roller; 152. Rotating rod; 16. Restoring structure; 2. Transmission device; 3. Ironing roller device; 31. Ironing roller; 32. Second lifting unit; 4. Common auxiliary transmission unit; 41. Second tensioning roller; 42. Third lifting unit; 43. Third tensioning roller. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] like Figure 1 to Figure 2 A hot stamping foil conveying device 2 shown in the figure includes an independent conveying unit 1, wherein the independent conveying unit 1 includes a 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, wherein the clamping conveying pair of rollers includes a first lifting unit 113, a fixed roller 114 and a lifting roller 115, wherein the lifting roller 115 is rotatably connected to the displacement end of the first lifting unit 113, and a clamping position is formed between the fixed roller 114 and the lifting 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 conveying pair of rollers can be arranged on the side walls; when it is necessary to convey the hot stamping foil, the first lifting unit 113 drives the lifting roller 115 to clamp the hot stamping foil together with the winding roller 112.

[0024] Specifically, the independent conveying unit 1 further comprises a first servo motor 12 for controlling the unwinding roller 111, a second servo motor 13 for controlling the winding roller 112, and a third servo motor 14 for controlling the fixed roller 114. The working torques of the first servo motor 12 and the second servo motor 13 are both smaller than the working torque of the third servo motor 14. The third servo motor 14 provides the fixed roller 114 with the main power for conveying the hot stamping foil, and the lifting roller 115 is driven. The first servo motor 12, the second servo motor 13, and the third servo motor 14 can be installed on the side wall. The third servo motor 14 is controlled by a signal to perform precise forward and reverse movements. The first servo motor 12 and the second servo motor 13 are set to rotate in a directional manner. The fixed roller 114 and the lifting roller 115 are both rubber roller bodies. After the fixed roller 114 and the lifting roller 115 clamp the hot stamping foil, when they rotate, they can drive the hot stamping foil to move by friction. The third servo motor 14 forms a transmission connection with the two clamping and conveying 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 third servo motor 14 , and a synchronous belt tensioning wheel 117 is provided on the side wall, which is connected to the two clamping transmission rollers through the synchronous belt.

[0025] When the hot stamping foil needs to be conveyed in the forward direction, the third servo motor 14 drives the clamping conveying roller to rotate forward, driving the hot stamping foil to be conveyed forward; the set direction of the second 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 first servo motor 12 is reverse rotation, but because the working torque of the first servo motor 12 is less than the working torque of the third servo motor 14, the unwinding roller 111 is subjected to the combined action of the third servo motor 14 and the first servo motor 12 and rotates forward for unwinding. At this time, the actual direction of the unwinding roller 111 is opposite to the set direction of the first servo motor 12, which is used to assist the hot stamping foil in a tensioned state.

[0026] When it is necessary to pull back, that is, to drive the hot stamping foil in the reverse direction, the third servo motor 14 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 second servo motor 13 is also forward rotation, but because the working torque of the second servo motor 13 is smaller than the working torque of the third servo motor 14, the winding roller 112 rotates in the reverse direction under the combined effect to unwind; the set direction of the first servo motor 12 is reverse rotation, and the unwinding roller 111 rotates in the reverse direction under the combined effect of the third servo motor 14 and the first servo motor 12 to rewind.

[0027] Specifically, the first lifting unit 113 is a cylinder or a hydraulic cylinder. The lifting roller 115 is rotatably connected to the displacement end of the cylinder. In this embodiment, the lifting roller 115 is arranged below the fixed roller 114. When the hot stamping foil needs to be replaced, the cylinder pushes the lifting roller 115 down, and the lifting roller 115 and the fixed roller 114 are separated, so as to facilitate the removal and replacement of the hot stamping foil. When the hot stamping foil is replaced, the cylinder drives the lifting roller 115 to rise and clamp the hot stamping foil.

[0028] Specifically, the independent conveying unit 1 further comprises a rotatable roller structure 15 and a restoring structure 16 for controlling the roller structure 15 to return to its original position; the roller structure 15 comprises two first tensioning rollers 151 disposed at intervals; the roller structure 15 comprises two rotating rods 152 disposed at intervals, one rotating rod 152 is rotatably disposed on the side wall through a rotating shaft, and the two ends of the first tensioning roller 151 are respectively connected to the two rotating rods 152. Two roller structures 15 may be provided. The restoring structure 16 may be a restoring spring or a torque motor. When forward conveying, the roller structure 15 is subjected to the force of the pulling force, and overcomes the force of the restoring structure 16 to make the roller structure 15 rotate. When pulling back, the clamping conveying rollers rotate in the opposite direction quickly, so that the hot stamping foil is conveyed in the opposite direction, and the roller structure 15 rotates in the opposite direction under the force of the restoring structure 16 because the pulling force disappears. Since the clamping and conveying rollers are rotating in the opposite direction quickly and the unwinding motor is rewinding, the hot stamping foil may be tightened or loosened. The rotation of the roller structure 15 can be used to compensate for the shrinkage or relaxation margin, so that the hot stamping foil is better in a tensioned state during the retraction process, which facilitates the smooth transmission of the hot stamping foil.

[0029] like Figure 2 A cold stamping machine shown in the figure includes the above-mentioned hot stamping foil conveying device 2, and also includes a hot stamping roller device 3 and a conveying device 2 for conveying printing materials, the printing materials can be base paper, etc., the unwinding roller 111 and the winding roller 112 are respectively located on both sides of the hot stamping roller device 3, and the number of the clamping conveying roller pairs is two, which are respectively arranged between the unwinding roller 111 and the hot stamping roller device 3 and between the winding roller 112 and the hot stamping roller device 3; the conveying device 2 can include a conveyor belt device, the conveyor belt can be a conveyor belt with holes, and a suction fan is arranged under the conveyor belt. Under the suction of the suction fan, the conveyor belt and the base paper are attached to form a large static friction force, and the conveyor belt drives the base paper to move. The third lifting device can control the hot stamping roller 31 to rise and fall. When the hot stamping roller 31 is descended, 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.

[0030] Specifically, the ironing roller device 3 includes an ironing roller 31 and a second lifting unit 32 for controlling the lifting and lowering of the ironing roller 31 .

[0031] Specifically, the hot stamping foil conveying device 2 further includes a common auxiliary conveying unit 4 arranged at the front of the hot stamping of the hot stamping roller device 3. The number of the independent conveying units 1 is at least two. The common auxiliary conveying unit 4 is used to assist the hot stamping foil of each independent conveying unit 1 to be conveyed synchronously. The common auxiliary conveying unit 4 includes a second tensioning roller 41 and a third lifting unit 42. The displacement ends of the second tensioning roller 41 and the third lifting unit 42 are rotatably connected. The figure shows a situation with three independent conveying units 1. The independent conveying unit 1 can control the hot stamping foil to be conveyed forward or backward. Each hot stamping foil can move synchronously or asynchronously under the control of its corresponding independent conveying unit 1. The common auxiliary conveying unit can include at least one second tensioning roller 41 and a plurality of third tensioning rollers 43. The second tensioning roller 41 and the third tensioning roller 43 are rollers that the hot stamping foil conveyed by each independent conveying unit 1 passes through together. The second tensioning roller 41 is located before the hot stamping foil passes through the hot stamping roller 31. The second tensioning roller 41 is movable. The length of the hot stamping foil between the second tensioning roller 41 and the hot stamping roller 31 and the length of the hot stamping foil between the second tensioning roller 41 and the unwinding roller 111 can be adjusted by moving the position of the second tensioning roller 41. Several third tensioning rollers 43 are arranged near the hot stamping roller 31. The near position here refers to the transmission path of the hot stamping foil. That is, the hot stamping foil can first pass through several third tensioning rollers 43, then pass through the second tensioning roller 41, then pass through several third tensioning rollers 43, then pass through the hot stamping roller 31, and then pass through several third tensioning rollers 43. This is because when hot stamping is performed, each hot stamping foil needs to be stamped at the same time, and each hot stamping foil needs to move synchronously under the control of its corresponding independent transmission unit 1. Passing through the common auxiliary transmission unit can better assist each hot stamping foil to move synchronously. Each independent conveying unit 1 can independently control the conveyance of a hot stamping foil; the common auxiliary conveying unit is used to assist the synchronous conveyance of each hot stamping foil; when the hot stamping roller 31 is raised, a hot stamping foil can be individually controlled to be pulled back, thereby making fuller use of the hot stamping foil.

[0032] Specifically, the hot stamping roller device 3 further includes a heating unit for heating the hot stamping roller 31; adding the heating unit can heat the hot stamping roller 31, and when hot stamping certain printing materials, heating the hot stamping roller 31 to a certain temperature can achieve a better hot stamping effect; wherein the heating unit can be an electromagnetic heating unit, or a heating tube arranged inside the hot stamping roller 31. Of course, other forms of heating units are also possible.

[0033] 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 hot stamping foil conveying device, characterized in that: It comprises an independent conveying unit, which comprises an unwinding roller, a winding roller, and a clamping conveying pair of rollers arranged between the unwinding roller and the winding roller. The clamping conveying pair of rollers comprises a first lifting unit, a fixed roller and a lifting roller. The lifting roller is rotatably connected to the displacement end of the first lifting unit, and a clamping position is formed between the fixed roller and the lifting roller.

2. The hot stamping foil conveying device according to claim 1, characterized in that: The first lifting unit is a cylinder, and the lifting roller is rotatably connected to the displacement end of the cylinder.

3. The hot stamping foil conveying device according to claim 1, characterized in that: The independent transmission unit also includes a first servo motor for controlling the unwinding roller, a second servo motor for controlling the winding roller, and a third servo motor for controlling the fixed roller. The working torques of the first servo motor and the second servo motor are both smaller than the working torque of the third servo motor.

4. The hot stamping foil conveying device according to claim 1, characterized in that: The independent transmission unit further comprises a rotatably arranged pair of roller structures and a restoring structure for controlling the pair of roller structures to return to their original positions; the pair of roller structures comprises two first tensioning rollers which are spaced apart from each other.

5. A cold stamping machine, characterized in that: The hot stamping foil conveying device comprises the hot stamping foil conveying device according to any one of claims 1 to 4, and also comprises a hot stamping roller device and a conveying device for conveying printing materials, wherein the unwinding roller and the winding roller are respectively located on both sides of the hot stamping roller device, and the number of the clamping conveying roller pairs is two, which are respectively arranged between the unwinding roller and the hot stamping roller device and between the winding roller and the hot stamping roller device.

6. A cold stamping machine according to claim 5, characterized in that: The ironing roller device comprises an ironing roller and a second lifting unit for controlling the lifting of the ironing roller.

7. A cold stamping machine according to claim 5, characterized in that: The hot stamping foil conveying device also includes a common auxiliary conveying unit arranged at the hot stamping front part of the hot stamping roller device, the number of the independent conveying units is at least two, and the common auxiliary conveying unit is used to assist the hot stamping foil of each independent conveying unit to be conveyed synchronously, and the common auxiliary conveying unit includes a second tensioning roller and a third lifting unit, and the second tensioning roller is rotatably connected to the displacement end of the third lifting unit.

8. The cold stamping machine according to claim 6, characterized in that: The ironing roller device further comprises a heating unit for heating the ironing roller.

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