Thermal transfer film and production apparatus

Abstract

The application relates to the technical field of hot transfer film winding, and discloses a hot transfer film, which comprises a substrate layer, and the substrate layer is specifically polyethylene terephthalate. A release agent is coated on the top surface of the substrate layer by means of a gravure coating mode, the release agent is set as cellulose butyrate, the solid content of the release agent is controlled to be 23%, the substrate layer is subjected to temperature rising drying at a temperature of 105-115 DEG C after being coated, so that the solvent in the release agent is volatilized and solidified, an external gravure printing machine is used to print a printing layer on the solidified release agent, a hot melt adhesive is coated on the top of the printing layer and is subjected to drying again, the adhesive layer is solidified to form the hot transfer film, the hot melt adhesive comprises decolorized lac and nitrocellulose, and the hot transfer film is subjected to winding treatment. The device has the advantages of improving the winding efficiency of the lifting device and being convenient for users to use.

Description

Technical Field

[0001] This invention relates to the field of heat transfer film winding technology, specifically to a heat transfer film and its production apparatus. Background Technology

[0002] Heat transfer film is a functional film that transfers patterns, text, or metal layers to the surface of a substrate through heating and pressure. It is widely used in packaging, labeling, textiles, electronic products and other fields. In the production process of heat transfer film, winding and changing is a key link that affects continuous production and the quality of finished products. Tensioning and winding equipment is usually used for winding and unwinding.

[0003] Publication No. CN221759098U discloses a heat transfer film take-up roller, characterized by: a roller body, with support plates rotatably connected to both ends of the roller body, and annular plates between the roller body and the two support plates. The two ends of the roller body pass through the two annular plates respectively. The two support plates are equipped with a moving mechanism for moving the two annular plates. Arc-shaped plates are provided on both sides above the roller body, and sliding rods are fixedly connected to the lower ends of the two arc-shaped plates. The two sliding rods slide through the two annular plates respectively. The two annular plates are equipped with a lifting mechanism for raising and lowering the two arc-shaped plates. This device prevents the heat transfer film from becoming loose and dragging at the tail after winding, avoiding waste of the heat transfer film. However, in actual use, this device and existing equipment usually require stopping the machine to replace the take-up roller when winding the heat transfer film. After replacement, the device needs to be restarted, and the tension of the heat transfer film needs to be readjusted, resulting in low overall winding efficiency. The winding efficiency of existing equipment has room for further improvement. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a heat transfer film and a production apparatus, which has advantages such as the ability to continuously wind up the heat-winding film without stopping the machine and ease of use for users.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat transfer film and a production apparatus, comprising: a base, a drive chamber, a control center, a conveying roller, a tensioning assembly, an opening and closing door, a first side chamber, a second side chamber, a transmission assembly, a rotating component, a conveying plate, an air vent, a stand, a movable plate, an electric push rod, a conveying chamber, a receiving plate, a sliding plate, a cold water circulation assembly, a third rotary drive assembly, a connecting plate, a first adjusting arm, a connecting assembly, a rotating roller, an elastic component, a locking block, a winding roller, a rotating disk, an electric clamp, a first electric turntable, an installation assembly, a first linear drive assembly, an adjusting assembly, a cutting blade, a second linear drive assembly, a top plate, a first arc-shaped plate, a second arc-shaped plate, a third linear drive assembly, a second adjusting arm, a second electric turntable, and a smoothing rod.

[0006] The positions and connections of the above structures are as follows: A heat transfer film includes a base layer, specifically polyethylene terephthalate. A release agent is coated onto the top surface of the base layer using a gravure coating method. The release agent is cellulose butyrate, and the solid content of the release agent is controlled at 23%. The coated base layer is then heated and dried at a temperature of 105-115°C to evaporate and solidify the solvent in the release agent. An external gravure printing machine is used to print the solidified release agent to form a printing layer. A hot melt adhesive is coated onto the top of the printing layer and dried again to ensure that the adhesive layer is cured to form a heat transfer film. The hot melt adhesive includes decolorized shellac and nitrocellulose. The heat transfer film is then wound up.

[0007] A heat transfer film production apparatus includes a base. Two drive chambers are fixedly connected to the top front end of the base. A control center is fixedly connected to the top of one drive chamber. Multiple conveying rollers are fixedly connected to the output ends of the two drive chambers. A tensioning assembly is fixedly connected to the top rear side of the base. An opening / closing door is movably connected to the rear surface of the tensioning assembly. A second side chamber is fixedly connected to the other end surface of the tensioning assembly. The tensioning assembly includes a third rotary drive assembly, which is fixedly connected inside the second side chamber. A conveying port is provided inside the tensioning assembly. The third rotary drive assembly is configured as a drive motor. A connecting plate is fixedly connected to one output end and is located at the conveying port. A first adjusting arm is fixedly connected to the top and bottom of the connecting plate. A rotating roller is rotatably connected inside the first adjusting arm and extends through and to the outer sides of both ends of the first adjusting arm. A take-up roller is fixedly connected to the outer surface of one end of the rotating roller. The take-up roller is located inside the conveying port. A rotating disk is provided at one end of the rotating roller. The rotating disk is rotatably connected to the inner wall of one end of the conveying port. An electric clamp is fixedly connected to the end of the rotating disk near the take-up roller. The rotating roller passes through the electric clamp and is rotatably connected to the surface of the rotating disk.

[0008] Preferably, the tensioning assembly further includes two connecting components, which are fixedly connected to the other end extensions of the two rotating rollers respectively. Both connecting components are arc-shaped and symmetrically arranged. Elastic elements are fixedly connected to the top and bottom sides of the connecting components. A locking block is fixedly connected to the end of the elastic element away from the connecting component. The locking block is semi-arc-shaped. Both connecting components are located inside the conveying port.

[0009] Preferably, the tensioning assembly further includes two first electric turntables, which are respectively fixedly connected to the inner wall of the other end of the tensioning assembly. An installation component is fixedly connected to the output end of each of the two first electric turntables. The installation component is located inside the conveying port, and an arc groove adapted to the appearance of the connecting component is opened at the end of the installation component near the connecting component. A slot is opened at the top and bottom of the arc groove.

[0010] Preferably, the tensioning assembly further includes a first linear drive assembly, which is fixedly connected to the inner wall of the rear end of the conveying port. The first linear drive assembly is configured as an electric push rod, and an adjustment assembly is fixedly connected to the front output end of the first linear drive assembly. A linear reciprocating structure assembly is fixedly connected inside the adjustment assembly, and a cutting blade is fixedly connected to the front end of the linear reciprocating structure assembly. Two second linear drive assemblies are fixedly connected to the top and bottom of the adjustment assembly. The second linear drive assemblies are configured as hydraulic cylinders. A top plate is fixedly connected to the end of the second linear drive assembly away from the adjustment assembly. First arc-shaped plates are fixedly connected to the left and right sides of the top plate. The first arc-shaped plates are set at four-quarters of their length. The top plate at the bottom has a first arc, and two second arc plates are fixedly connected to the left and right sides. The second arc plates are set to half the arc. Smoothing rods are slidably connected to the inside of the two first arc plates and the two second arc plates. The two smoothing rods extend to the outer side of one end of the first arc plate and the second arc plate, respectively. A second electric turntable is set at one end of the smoothing rod. A second adjusting arm is fixedly connected to the output end of the other end of the second electric turntable. The second adjusting arm is fixedly connected to one end of the smoothing rod. A third linear drive assembly is fixedly connected to the bottom of the second electric turntable. The third linear drive assembly is set as a hydraulic cylinder. The two third linear drive assemblies are fixedly connected to one end of the adjusting assembly.

[0011] Preferably, a first side chamber is fixedly connected to one end surface of the tensioning assembly, and a transmission assembly is provided on the front side of the interior of the tensioning assembly. The transmission assembly consists of a drive motor, a conveyor belt, two idlers, a metal frame, and auxiliary components. Multiple rotating parts are fixedly connected to the outer surface of the transmission assembly. A conveyor plate is slidably connected inside the rotating parts, and the outer surface of the conveyor plate is rounded. A torsion spring is fixedly connected between the conveyor plate and the rotating parts. Uprights are fixedly connected to both ends of the transmission assembly, and movable plates are fixedly connected to the other end of the uprights. The two movable plates pass through and extend into the interior of the first side chamber and the second side chamber, respectively.

[0012] Preferably, an electric push rod is fixedly connected to the extension portion of the movable plate, and the tops of the two electric push rods are respectively fixedly connected to the top inner wall of the first side chamber and the second side chamber.

[0013] Preferably, the bottom of the transmission assembly is provided with a conveying chamber, and a conveying pipe and a extraction pipe are fixedly connected to the other end surface of the conveying chamber. The other end of the conveying pipe and the extraction pipe passes through the second side chamber and extends into the interior of the second side chamber. A cold water circulation assembly is fixedly connected to the extended part of the conveying pipe and the extraction pipe, and the cold water circulation assembly is fixedly connected to the interior of the second side chamber. A receiving plate is fixedly connected to the top of the conveying chamber. The receiving plate is specifically made of heat transfer metal. Slide plates are fixedly connected to both the left and right sides of the receiving plate, and the slide plates are slidably connected to the interior of the upright.

[0014] Preferably, a cooling air component is fixedly connected inside the transmission component, and multiple air vents are opened on the outer surface of the transmission component. An air outlet chamber is fixedly connected to the output end of the cooling air component, and the air outlet chamber communicates with the multiple air vents.

[0015] Beneficial effects 1. The positioning heat transfer film winding tensioning device and tensioning method, by activating the tensioning component, reduces the situation where, during the conveying process, the increased tension force causes the heat transfer film to bulge after tightening, and the existing conveying rollers cannot adaptively accommodate it, resulting in wrinkles on its surface. At the same time, the device can uniformly distribute the heat transfer film, improve the conveying quality of the heat transfer film, and facilitate user operation.

[0016] 2. The positioning heat transfer film winding tensioning device and tensioning method, by activating the tensioning device, reduces the deformation of the heat transfer film during transportation caused by insufficient cooling in the prior art, thus ensuring the normal operation of the device.

[0017] 3. The positioning heat transfer film winding tensioning device and tensioning method enable the device to continuously wind up the heat transfer film without stopping the machine by activating the tensioning component, thereby improving the winding efficiency of the device and making it easier for users to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of a heat transfer film and its production apparatus according to the present invention; Figure 2 This is a top view schematic diagram of a heat transfer film and production apparatus according to the present invention; Figure 3 This is a rear-side view of the internal structure of a heat transfer film and production apparatus according to the present invention. Figure 4 This is a schematic diagram of the internal structure of the first side chamber of a heat transfer film and production apparatus according to the present invention; Figure 5 This is a schematic diagram of the internal structure of the second side chamber of a heat transfer film and production apparatus according to the present invention; Figure 6 This is a rear view of the internal structure of a heat transfer film and production apparatus according to the present invention. Figure 7 This is a schematic diagram of the structure of a heat transfer film and a transmission component of a production device according to the present invention; Figure 8 This is a top view schematic diagram of the transmission component of a heat transfer film and production device according to the present invention; Figure 9 This is a schematic diagram of the structure of the second rotary drive component of a heat transfer film and production device according to the present invention; Figure 10This is a schematic diagram of the structure of a heat transfer film and a production device winding roller according to the present invention; Figure 11 This is a schematic diagram of the internal structure of a heat transfer film and a connecting component of a production device according to the present invention; Figure 12 This is a schematic diagram of the first electric turntable structure of a heat transfer film and production device according to the present invention; Figure 13 This is a schematic diagram of the structure of the first linear drive component of a heat transfer film and production apparatus according to the present invention. Figure 14 This is a schematic diagram of the heat transfer film and production apparatus of the present invention, showing the heat transfer film winding process.

[0019] In the diagram: 1. Base; 2. Drive chamber; 3. Control center; 4. Conveyor roller; 5. Tensioning assembly; 50. Opening / closing door; 500. First side chamber; 51. Second side chamber; 52. Transmission assembly; 520. Rotating component; 521. Conveyor plate; 522. Air vent; 523. Frame; 524. Movable plate; 525. Electric push rod; 53. Conveyor chamber; 530. Receiving plate; 531. Slide plate; 532. Cold water circulation assembly; 54. Third rotary drive assembly; 540. Connecting plate; 541. First adjusting arm; 55. Connecting... Components; 550, Rotating roller; 5500, Elastic element; 5501, Clamping block; 551, Take-up roller; 552, Rotating disk; 553, Electric clamp; 56, First electric turntable; 560, Mounting assembly; 57, First linear drive assembly; 570, Adjustment assembly; 5700, Cutting knife; 571, Second linear drive assembly; 572, Top plate; 573, First arc plate; 574, Second arc plate; 575, Third linear drive assembly; 576, Second adjusting arm; 577, Second electric turntable; 578, Smoothing bar. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example Please see Figures 1 to 14A positioning heat transfer film winding and tensioning device includes a base 1. The base 1 has two drive chambers 2 fixedly connected to its top front end. A control center 3 is fixedly connected to the top of one drive chamber 2. Multiple conveying rollers 4 are fixedly connected to the output ends of the two drive chambers 2. A tensioning assembly 5 is fixedly connected to the top rear side of the base 1. An opening and closing door 50 is movably connected to the rear surface of the tensioning assembly 5. A second side chamber 51 is fixedly connected to the other end surface of the tensioning assembly 5. The tensioning assembly 5 includes a third rotary drive assembly 54, which is fixedly connected inside the second side chamber 51. The tensioning assembly 5 has a conveying port inside. The third rotary drive assembly 54 is a drive motor. A connecting plate 540 is fixedly connected to one output end of the third rotary drive assembly 54 and is located at the conveying port. A first adjusting arm 541 is fixedly connected to the top and bottom of the connecting plate 540. A rotating roller 550 is rotatably connected inside the first adjusting arm 541 and extends through and to the outer sides of both ends of the first adjusting arm 541. A take-up roller 551 is fixedly connected to the outer surface of one end of the rotating roller 550 and is located inside the conveying port. A rotating disk 552 is provided at one end of the rotating roller 550 and is rotatably connected to the inner wall of one end of the conveying port. An electric clamp 553 is fixedly connected to one end of the rotating disk 552 near the take-up roller 551. The rotating roller 550 passes through the electric clamp 553 and is rotatably connected to the surface of the rotating disk 552. The tensioning assembly 5 also includes two connecting assemblies 55, which are fixedly connected to the other end extensions of the two rotating rollers 550 respectively. Both connecting assemblies 55 are arc-shaped and symmetrically arranged. Elastic elements 5500 are fixedly connected to the top and bottom sides of the connecting assemblies 55. A locking block 5501 is fixedly connected to the end of the elastic element 5500 away from the connecting assembly 55. The locking block 5501 is semi-arc-shaped. Both connecting assemblies 55 are located inside the conveying port. The tensioning assembly 5 also includes two first electric turntables 56, which are fixedly connected to the inner wall of the other end of the tensioning assembly 5. An installation assembly 560 is fixedly connected to the output end of each of the two first electric turntables 56. The installation assembly 560 is located inside the conveying port and has an arc groove that matches the appearance of the connecting assembly 55 at the end of the installation assembly 560 near the connecting assembly 55. Slots are provided at the top and bottom of the arc groove. The tensioning assembly 5 also includes a first linear drive assembly 57, which is fixedly connected to the inner wall of the rear end of the conveying port. The first linear drive assembly 57 is configured as an electric push rod 525, and an adjusting assembly 570 is fixedly connected to the front output end of the first linear drive assembly 57. A linear reciprocating structure assembly is fixedly connected inside the adjusting assembly 570, and a cutting blade 5700 is fixedly connected to the front end of the linear reciprocating structure assembly. Two second linear drive assemblies 571 are fixedly connected to the top and bottom of the adjusting assembly 570. The second linear drive assemblies 571 are configured as hydraulic cylinders. A top plate 572 is fixedly connected to the end of the second linear drive assembly 571 away from the adjusting assembly 570. First arc-shaped plates 573 are fixedly connected to the left and right sides of the top plate 572. The first arc-shaped plates 573 are set with a quarter arc. A second arc-shaped plate 574 is fixedly connected to both sides of the top plate 572. The second arc-shaped plate 574 is set with a half arc. Smoothing rods 578 are slidably connected inside the two first arc-shaped plates 573 and the two second arc-shaped plates 574. The two smoothing rods 578 extend to the outer side of one end of the first arc-shaped plate 573 and the second arc-shaped plate 574, respectively. A second electric turntable 577 is provided at one end of the smoothing rod 578. A second adjusting arm 576 is fixedly connected to the output end of the other end of the second electric turntable 577. The second adjusting arm 576 is fixedly connected to one end of the extension of the smoothing rod 578. A third linear drive assembly 575 is fixedly connected to the bottom of the second electric turntable 577. The third linear drive assembly 575 is set as a hydraulic cylinder. Both third linear drive assemblies 575 are fixedly connected to one end of the adjusting assembly 570. In actual use, when this device and existing equipment are winding up the heat transfer film, it is usually necessary to stop the machine to replace the winding roller 551. After replacement, the device needs to be restarted and the tension of the heat transfer film needs to be readjusted, which makes the overall winding efficiency of the device low. The winding efficiency of the existing equipment has room for further improvement. This application proposes a positioning-type heat transfer film winding and tensioning device. The heat transfer film is wound around the conveyor roller 4, which conveys the heat transfer film through the conveyor port to the transmission component 52. The transmission component 52, in cooperation with the receiving plate 530, then conveys the heat transfer film to the take-up roller 551. During this process, the receiving plate 530, in cooperation with the conveying chamber 53 and the cold water circulation component 532, cools the hot melt adhesive layer at the bottom of the heat transfer film. The first electric turntable 56 on the top side is activated, causing the take-up roller 551 on the top side to rotate. The take-up roller 551 on the top side winds up the heat transfer film. The first electric turntable 56 on the top side is activated by the control center 3, which drives the mounting component 560 on the top side to rotate. Initially... The lower connecting component 55 is engaged with the arc groove of the mounting component 560 via two locking blocks 5501 and locking slots. The rotation of the top mounting component 560 drives the top take-up roller 551 to rotate via the top connecting component 55 and the top rotating roller 550. The top take-up roller 551 winds up the heat transfer film. In this step, the electric clamp 553 does not fix the rotating roller 550. When the take-up roller 551 needs to be replaced after winding for a period of time, the control center 3 activates the third rotary drive component 54 and the first linear drive component 57. The activation of the third rotary drive component 54 drives the connecting disc 540 to rotate. The rotation of the connecting disc 540 drives the two connecting components 55 to rotate via the two first adjusting arms 541 until the connecting disc 540 rotates. Rotating 0 to 180 degrees, the locking block 5501, being semi-arc-shaped, can normally separate from the slot under the action of the elastic element 5500, driven by the rotation of the first adjusting arm 541 and the connecting component 55. The connecting disc 540 rotates 180 degrees, driving the two take-up rollers 551 to rotate via the two first adjusting arms 541, the two connecting components 55, and the two rotating rollers 550. At this time, the wound-up roller 551 is on the bottom side, and the unwound take-up roller 551 is on the top side. In this step, the electric clamp 553 fixes the rotating roller 550. During this process, the heat transfer film continues to be conveyed. At this time, during the rotation of the two take-up rollers 551, the adhesive on the top of the unwound take-up roller 551 and the hot melt adhesive layer of the heat transfer film... The film is bonded and fixed at the joint. After the two take-up rollers 551 have rotated, there is still a portion of heat transfer film between the unwound take-up roller 551 and the wound take-up roller 551. At this time, the connecting component 55 at the unwound take-up roller 551 is engaged with the mounting component 560 on the top side by the locking block 5501. Similarly, the first electric turntable 56 on the top side drives the unwound take-up roller 551 to rotate and wind it up. During this process, the control center 3 activates the first linear drive component 57 and the second linear drive component 571. The first linear drive component 57 moves the adjusting component 570 to the heat transfer film between the two take-up rollers 551, while the four second linear drive components 571 move the top and bottom plates 572.The top plate 572 on the top side moves, causing the two first arc-shaped plates 573, the smoothing rod 578, and the second electric turntable 577 to move to the bottom of the unwound take-up roller 551. The top plate 572 on the bottom side moves, causing the two second arc-shaped plates 574, the smoothing rod 578, and the second electric turntable 577 to move to the top of the wound take-up roller 551. At this time, the control center 3 activates the adjustment component 570 to make the cutting knife 5700 perform linear reciprocating motion through the linear reciprocating structure component. The cutting knife 5700 cuts the heat transfer film at the two take-up rollers 551. At this time, the second electric turntable 577 is activated, driving the smoothing rod 578 to rotate through the second adjustment arm 576. The smoothing rod 578 on the top side rotates at the two first arc-shaped plates 573 to cut the heat transfer film. The heat transfer film is attached to the bottom rear side of the take-up roller 551 to prevent the cut heat transfer film from sticking to the hot melt adhesive layer of the unwound heat transfer film, which would reduce the winding quality of the device. The smoothing rod 578 on the bottom side moves within the two second arc-shaped plates 574 to completely wind up the cut heat transfer film. Simultaneously, the second arc-shaped plates 574 on the bottom side, being half-arc, prevent warping caused by incomplete winding of the heat transfer film at the end after the smoothing rod 578 smooths it out. The user can then unload the wound heat transfer film from the take-up roller 551 by opening the opening / closing door 50. During this process, the device continuously feeds the heat transfer film, allowing for continuous winding of the heat transfer film without stopping the machine, improving the winding efficiency and facilitating user operation. Please see Figures 7 to 8 One end surface of the tensioning assembly 5 is fixedly connected to a first side chamber 500. A transmission assembly 52 is provided on the front side of the interior of the tensioning assembly 5. The transmission assembly 52 consists of a drive motor, a conveyor belt, two idlers, a metal frame, and auxiliary components. Multiple rotating parts 520 are fixedly connected to the outer surface of the transmission assembly 52. ​​A conveyor plate 521 is slidably connected inside the rotating parts 520, and the outer surface of the conveyor plate 521 is rounded. A torsion spring is fixedly connected between the conveyor plate 521 and the rotating parts 520. A stand 523 is fixedly connected to both ends of the transmission assembly 52. ​​A movable plate 524 is fixedly connected to the other end of the stand 523. The two movable plates 524 pass through and extend into the interior of the first side chamber 500 and the second side chamber 51, respectively. In the above steps, when the heat transfer film is conveyed into the tensioning assembly 5, it first passes through multiple conveying plates 521 on the surface of the transmission assembly 52. ​​The bottom of the heat transfer film is supported by the receiving plate 530. At this time, the heat transfer film is essentially clamped between the transmission assembly 52 and the receiving plate 530. The control center 3 activates the transmission assembly 52, causing multiple rotating parts 520 and conveying plates 521 on its surface to move. The movement of the conveying plates 521 conveys the heat transfer film. During the conveying process, because the heat transfer film covers and moves from top to bottom, the heat transfer film is always affected by the clamping force. Each conveying plate 521 moves independently, automatically compensating for the macroscopic structural errors and thickness unevenness of the heat transfer film. Each conveying plate 521 contacts the heat transfer film with its own rotating part 520 and torsion spring, thereby achieving an extremely uniform pressure distribution across the entire width. This makes it difficult for the heat transfer film to wrinkle or deform during the conveying process. The outer surface of the conveying plate 521 is rounded to reduce damage to the surface of the heat transfer film at its edges. When the conveying roller... 4. When the tension at the take-up roller 551 increases, causing the heat transfer film to become taut, the surface of the heat transfer film tends to wrinkle and form protrusions. When the conveyor plate 521, located at this tendency position, experiences a pushing force due to the taut protrusions on the heat transfer film surface, it overcomes this force by moving upwards or swinging within the rotating component 520. Since the torsion spring has a low stiffness coefficient, it can only ensure the conveyor plate 521 returns to its original position. Therefore, the conveyor plate 521 can... The device moves normally when the heat transfer film is taut and bulges out. The movement of the conveyor plate 521 accommodates the bulges of the heat transfer film, preventing them from being crushed and wrinkled by the huge pressure applied after the conveyor plate 521 is fixed. This reduces the likelihood of wrinkles forming on the surface of the heat transfer film due to increased tension and bulges formed after the heat transfer film is taut during the conveying process, which the existing conveyor roller 4 cannot adaptively accommodate. At the same time, the device can uniformly convey the heat transfer film, improving the conveying quality of the heat transfer film and making it easier for users to use. An electric push rod 525 is fixedly connected to the extension of the movable plate 524. The tops of the two electric push rods 525 are respectively fixedly connected to the top inner wall of the first side chamber 500 and the second side chamber 51. The electric push rod 525 is used to move the transmission assembly 52. ​​When the tension force on the heat transfer film is large and the heat transfer film is deformed by depression, the device can control the electric push rod 525 to move the position of the transmission assembly 52 and the receiving plate 530 through the control center 3, thereby alleviating the situation of depression deformation at the heat transfer film and ensuring the normal operation of the device. The bottom of the transmission assembly 52 is provided with a conveying chamber 53. The other end of the conveying chamber 53 is fixedly connected with a conveying pipe and a extraction pipe. The other end of the conveying pipe and the extraction pipe passes through the second side chamber 51 and extends into the interior of the second side chamber 51. The extended part of the conveying pipe and the extraction pipe is fixedly connected with a cold water circulation assembly 532, and the cold water circulation assembly 532 is fixedly connected into the interior of the second side chamber 51. The top of the conveying chamber 53 is fixedly connected with a receiving plate 530. The receiving plate 530 is specifically made of heat transfer metal. Slide plates 531 are fixedly connected to both the left and right sides of the receiving plate 530. The slide plates 531 are slidably connected to the interior of the upright frame 523. During the process described above, when the conveyor plate 521 and the receiving plate 530 cooperate to convey the heat transfer film, the control center 3 activates the cold water circulation component 532 to circulate cold water in the conveying chamber 53. The internal temperature of the conveying chamber 53 decreases and this temperature is transferred to the receiving plate 530 through heat transfer. When the receiving plate 530 cooperates with the conveyor plate 521 to convey the heat transfer film, it can cool the hot melt adhesive layer of the heat transfer film from the bottom. Furthermore, the multiple conveyor plates 521 and the receiving plate 530 clamp the heat transfer film, so that the surface of the heat transfer film bears the same pressure at the receiving plate 530. This results in uniform cooling between the heat transfer film and the receiving plate 530, which is face-to-face. Compared with the point-to-point and line-to-line cooling rollers of the prior art, this method has a more uniform cooling effect, reduces the deformation of the heat transfer film during the conveying process due to insufficient cooling in the prior art, and ensures the normal operation of the device. A cooling air assembly is fixedly connected inside the transmission assembly 52. ​​Multiple air vents 522 are opened on the outer surface of the transmission assembly 52. ​​An air outlet chamber is fixedly connected to the output end of the cooling air assembly, and the air outlet chamber communicates with the multiple air vents 522. When the cold water circulation component 532 is turned on in the above steps, the control center 3 simultaneously turns on the cold air component. The cold air component turns on and cools the top of the heat transfer film through the air outlet chamber and air vent 522. On the one hand, the air blowing between the conveyor plates 521 can reduce the temperature difference between the top and bottom of the heat transfer film, thus mitigating the problem of the heat transfer film being prone to bending and deformation due to a large temperature difference between the top and bottom. On the other hand, after passing through the heat transfer film, the cold air also transfers the temperature to the top of the receiving plate 530, so that the temperature of the top of the receiving plate 530 is always close to the temperature of the cold air. This mitigates the problem of poor cooling effect of the receiving plate 530 during the gap between the discharge of warm water and the introduction of cold water in the cold water circulation in the conveying chamber 53, improves the conveying effect of the device on the heat transfer film, and facilitates user operation.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat transfer film, comprising a base layer, specifically polyethylene terephthalate, wherein a release agent is coated onto the top surface of the base layer by gravure coating, the release agent being cellulose butyrate with a solid content controlled at 23%, the coated base layer is then heated and dried at 105-115°C to evaporate and solidify the solvent in the release agent, an external gravure printing machine is used to print the solidified release agent to form a printing layer, a hot melt adhesive is coated onto the top of the printing layer and dried again to ensure that the adhesive layer solidifies to form a heat transfer film, the hot melt adhesive including decolorized shellac and nitrocellulose, and the heat transfer film is then wound up.

2. A production apparatus for a heat transfer film, comprising a base (1), characterized in that, The base (1) has two drive chambers (2) fixedly connected to its top front end. A control center (3) is fixedly connected to the top of one drive chamber (2). Multiple conveying rollers (4) are fixedly connected to the output ends of the two drive chambers (2). A tensioning assembly (5) is fixedly connected to the rear side of the base (1). An opening and closing door (50) is movably connected to the rear surface of the tensioning assembly (5). A second side chamber (51) is fixedly connected to the other end surface of the tensioning assembly (5). The tensioning assembly (5) includes a third rotary drive assembly (54), which is fixedly connected inside the second side chamber (51). A conveying port is opened inside the tensioning assembly (5). The third rotary drive assembly (54) is configured as a drive motor. A connecting plate (540) is fixedly connected to the output end of the third rotary drive assembly (54). A first adjusting arm (541) is fixedly connected to the top and bottom of the connecting plate (540) at the conveying port. A rotating roller (550) is rotatably connected inside the first adjusting arm (541), and the rotating roller (550) passes through and extends to the outer sides of both ends of the first adjusting arm (541). A take-up roller (551) is fixedly connected to the outer surface of one end of the rotating roller (550). The take-up roller (551) is located inside the conveying port. A rotating disk (552) is provided at one end of the rotating roller (550). The rotating disk (552) is rotatably connected to the inner wall of one end of the conveying port. An electric clamp (553) is fixedly connected to one end of the rotating disk (552) near the take-up roller (551). The rotating roller (550) passes through the electric clamp (553) and is rotatably connected to the surface of the rotating disk (552).

3. The apparatus for producing a heat transfer film according to claim 2, characterized in that: The tensioning assembly (5) also includes two connecting assemblies (55), which are fixedly connected to the other end extensions of the two rotating rollers (550). Both connecting assemblies (55) are arc-shaped and symmetrically arranged. Elastic elements (5500) are fixedly connected to the top and bottom sides of the connecting assemblies (55). A locking block (5501) is fixedly connected to the end of the elastic element (5500) away from the connecting assembly (55). The locking block (5501) is semi-arc-shaped. Both connecting assemblies (55) are located inside the conveying port.

4. The apparatus for producing a heat transfer film according to claim 3, characterized in that: The tensioning assembly (5) also includes two first electric turntables (56), which are fixedly connected to the inner wall of the other end of the tensioning assembly (5). An installation assembly (560) is fixedly connected to the output end of each of the two first electric turntables (56). The installation assembly (560) is located inside the conveying port, and an arc groove that matches the appearance of the connecting assembly (55) is opened at the end of the installation assembly (560) near the connecting assembly (55). A slot is opened at the top and bottom of the arc groove.

5. The apparatus for producing a heat transfer film according to claim 4, characterized in that: The tensioning assembly (5) further includes a first linear drive assembly (57), which is fixedly connected to the inner wall of the rear end of the conveying port. The first linear drive assembly (57) is configured as an electric push rod, and an adjustment assembly (570) is fixedly connected to the front output end of the first linear drive assembly (57). A linear reciprocating structure assembly is fixedly connected inside the adjustment assembly (570), and a cutting blade (5700) is fixedly connected to the front end of the linear reciprocating structure assembly. Two second linear drive assemblies (571) are fixedly connected to the top and bottom of the adjustment assembly (570). The second linear drive assembly (571) is configured as a hydraulic cylinder. A top plate (572) is fixedly connected to the end of the second linear drive assembly (571) away from the adjustment assembly (570). A first arc plate (573) is fixedly connected to the left and right sides of the top plate (572) at the top. The first arc plate (573) is set with a quarter arc. The top plate (572) at the bottom is fixedly connected to the top plate (5700). 2) A second arc plate (574) is fixedly connected to both the left and right sides. The second arc plate (574) is set to half the arc. Smoothing rods (578) are slidably connected inside the two first arc plates (573) and the two second arc plates (574). The two smoothing rods (578) extend to the outer side of one end of the first arc plate (573) and the second arc plate (574). A second electric turntable (577) is set at one end of the smoothing rod (578). A second adjusting arm (576) is fixedly connected to the output end of the other end of the second electric turntable (577). The second adjusting arm (576) is fixedly connected to one end of the extension of the smoothing rod (578). A third linear drive assembly (575) is fixedly connected to the bottom of the second electric turntable (577). The third linear drive assembly (575) is set as a hydraulic cylinder. Both third linear drive assemblies (575) are fixedly connected to one end of the adjusting assembly (570).

6. The apparatus for producing a heat transfer film according to claim 5, characterized in that: One end surface of the tensioning assembly (5) is fixedly connected to a first side chamber (500). A transmission assembly (52) is provided on the front side inside the tensioning assembly (5). The transmission assembly (52) consists of a drive motor, a conveyor belt, two idlers, a metal frame, and auxiliary components. Multiple rotating parts (520) are fixedly connected to the outer surface of the transmission assembly (52). A conveyor plate (521) is slidably connected inside the rotating part (520), and the outer surface of the conveyor plate (521) is rounded. A torsion spring is fixedly connected between the conveyor plate (521) and the rotating part (520). A stand (523) is fixedly connected to both ends of the transmission assembly (52). A movable plate (524) is fixedly connected to the other end of the stand (523). The two movable plates (524) pass through and extend into the interior of the first side chamber (500) and the second side chamber (51), respectively.

7. The apparatus for producing a heat transfer film according to claim 6, characterized in that: An electric push rod (525) is fixedly connected to the extension of the movable plate (524), and the tops of the two electric push rods (525) are fixedly connected to the top inner walls of the first side chamber (500) and the second side chamber (51), respectively.

8. The apparatus for producing a heat transfer film according to claim 6, characterized in that: The bottom of the transmission assembly (52) is provided with a conveying chamber (53). The other end of the conveying chamber (53) is fixedly connected with a conveying pipe and a extraction pipe. The other end of the conveying pipe and the extraction pipe passes through the second side chamber (51) and extends into the interior of the second side chamber (51). The extended part of the conveying pipe and the extraction pipe is fixedly connected with a cold water circulation assembly (532), and the cold water circulation assembly (532) is fixedly connected into the interior of the second side chamber (51). The top of the conveying chamber (53) is fixedly connected with a receiving plate (530). The receiving plate (530) is specifically made of heat transfer metal. Slide plates (531) are fixedly connected to both the left and right sides of the receiving plate (530). The slide plates (531) are slidably connected to the interior of the upright frame (523).

9. The apparatus for producing a heat transfer film according to claim 8, characterized in that: The transmission assembly (52) is internally fixedly connected to a cooling air assembly, and the outer surface of the transmission assembly (52) is provided with multiple air vents (522). The output end of the cooling air assembly is fixedly connected to an air outlet chamber, and the air outlet chamber communicates with the multiple air vents (522).

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