A heat transfer printing apparatus

Abstract

This utility model provides a heat transfer printing device, relating to the technical field of heat transfer printing equipment, including a frame, multiple roller assemblies, a heating element, and a driving element; the multiple roller assemblies are arranged on the frame; each roller assembly includes a first roller and a second roller rotatably connected to the frame, the first roller and the second roller being arranged along the height direction of the frame; the heating element is disposed on the frame and used to heat the heat transfer film; the driving element is connected to the second roller; the sealing tape and the heat transfer film are placed in the gap between the first roller and the second roller, and the driving element drives the second roller to rotate, causing the second roller to rotate relative to the first roller, thereby driving the sealing tape and the heat transfer film to be transmitted along the arrangement direction of the multiple roller assemblies; the heating element heats the heat transfer film, causing the pattern layer on the heat transfer film to detach; during the transmission process, the first roller and the second roller apply pressure to the heat transfer film and the sealing tape, and the pattern layer on the heat transfer film is transferred to the sealing tape.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat transfer equipment, and specifically relates to a heat transfer device. Background Technology

[0002] Heat transfer printing equipment, also known as heat transfer printing machine or heat transfer printing press, is an industrial device used to transfer patterns through heat transfer printing processes. It is mainly used in personalized gift customization, textile industry, and leather industry.

[0003] Chinese patent CN 106863540 A discloses a special-shaped sheet metal edge banding device, including a machine body, a control device, and a worktable. The worktable is mounted on the machine body and has a roller track. A rotating wheel is mounted on the roller track, and a workpiece support frame is mounted on the upper part of the rotating wheel. The workpiece support frame is arranged horizontally and has a first milling cutter, a middle milling cutter, and a rear milling cutter arranged sequentially on it. A sanding wheel planer is located between the first milling cutter and the middle milling cutter, and a heat transfer device is located between the middle milling cutter and the rear milling cutter. The control device is connected to the worktable via a support column and is connected to the first milling cutter, the middle milling cutter, the heat transfer device, and the rear milling cutter via signal lines. A workpiece input device is located on the worktable.

[0004] The heat transfer machine disclosed in the aforementioned patent can only perform heat transfer operations on single patterns of limited size and cannot be applied to long edge sealing tapes. Utility Model Content

[0005] The purpose of this utility model is to provide a heat transfer device in which a first roller and a second roller apply pressure to a heat transfer film and a sealing tape, so that the pattern layer on the heat transfer film is transferred to the surface of the sealing tape, thereby realizing the heat transfer operation of the sealing tape.

[0006] The technical solution adopted to solve the above-mentioned technical problems is as follows: This utility model provides a heat transfer device including: frame; Multiple roller assemblies are arranged in the frame; each roller assembly includes a first roller and a second roller rotatably connected to the frame, the first roller and the second roller are arranged along the height direction of the frame, and a gap is formed between the first roller and the second roller for the sealing tape and the heat transfer film to pass through. A heating element is disposed on the frame and is used to heat the heat transfer film; A drive unit, connected to the second roller and used to drive the second roller to rotate, wherein the edge sealing tape and the heat transfer film are driven between the first roller and the second roller, so that the pattern on the heat transfer film is transferred to the edge sealing tape.

[0007] According to an embodiment of the present invention, the heat transfer device includes a heating cover, which is disposed on the frame. The first roller and the heating element are located inside the heating cover, and the heating cover is located on the side of the first roller away from the heat transfer film.

[0008] According to an embodiment of the present invention, the heating element of the heat transfer device includes a plurality of heating rods, which are disposed on the inner wall of the heating cover.

[0009] According to an embodiment of the present invention, the heating cover of the heat transfer device is bent to form a recess, and the first roller is located in the recess.

[0010] According to the embodiment of the present utility model, the heat transfer device has multiple heating elements and heating covers, and the heating elements, heating covers and roller assemblies are arranged in a one-to-one correspondence.

[0011] According to an embodiment of the present invention, the heat transfer device further includes a heat insulation component, which covers the outside of the heating cover and is used to insulate against heat.

[0012] According to an embodiment of the present invention, the heat transfer device further includes a fixing mesh, which is wrapped around the heating cover, and the heat insulation member is disposed between the fixing mesh and the heating cover.

[0013] According to an embodiment of the present invention, the outer peripheral edge of the fixed mesh of the heat transfer device is connected to the outer peripheral edge of the heating cover, and the installation space of the heat insulation component is formed between the fixed mesh and the heating cover.

[0014] According to an embodiment of the present invention, the roller assembly of the heat transfer device further includes a cylinder and a movable frame. The cylinder is disposed on the frame, and the movable frame is movably disposed on the frame along the height direction of the frame. The first roller is rotatably connected to the movable frame. The extension shaft of the cylinder is connected to the movable frame.

[0015] According to an embodiment of the present invention, the first roller of the heat transfer device is a high-temperature rubber roller.

[0016] The present invention has at least the following beneficial effects: The edge sealing tape and heat transfer film are placed in the gap between the first and second rollers. The drive unit drives the second roller to rotate, causing the second roller to rotate relative to the first roller, thereby driving the edge sealing tape and heat transfer film to move. Multiple roller assemblies are arranged on the frame, so that the edge sealing tape and heat transfer film are driven along the arrangement direction of the multiple roller assemblies. The heating element heats the heat transfer film, causing the pattern layer on the heat transfer film to detach. During the transmission process, the first and second rollers apply pressure to the heat transfer film and the edge sealing tape, so that the pattern layer on the heat transfer film is transferred to the surface of the edge sealing tape, thus realizing the heat transfer operation of the edge sealing tape. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of the heat transfer device provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the overall structure of the heat transfer device provided in this embodiment of the utility model; Figure 3 This is a side view of the heat transfer apparatus provided in this embodiment of the present invention; Figure 4 This is a top view of the heat transfer device provided in this embodiment of the utility model; Figure 5 This is a cross-sectional view of the heat transfer device provided in this embodiment of the present invention; The following labels are shown in the attached diagram: 100. Frame; 110. Heating cover; 111. Recess; 200. Roller assembly; 210. First roller; 220. Second roller; 230. Cylinder; 240. Movable frame; 250. Adjusting valve; 300. Heating element; 310. Heating rod; 400. Drive components; 500. Heat transfer film; 600. Edge sealing tape. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 5 The following are several embodiments of the heat transfer device of this utility model.

[0023] like Figures 1 to 5 As shown, the heat transfer device of this utility model embodiment includes a frame 100, multiple roller assemblies 200, a heating element 300, and a driving element 400. The multiple roller assemblies 200 are arranged on the frame 100. Each roller assembly 200 includes a first roller 210 and a second roller 220 rotatably connected to the frame 100. The first roller 210 and the second roller 220 are arranged along the height direction of the frame 100, and a gap is formed between the first roller 210 and the second roller 220 for the sealing tape 600 and the heat transfer film 500 to pass through. The heating element 300 is disposed on the frame 100 and is used to heat the heat transfer film 500. The driving element 400 is connected to the second roller 220 and is used to drive the second roller 220 to rotate. The sealing tape 600 and the heat transfer film 500 are driven between the first roller 210 and the second roller 220 so that the pattern on the heat transfer film 500 is transferred to the sealing tape 600.

[0024] The edge sealing tape 600 and the heat transfer film 500 are placed in the gap between the first roller 210 and the second roller 220. The driving component 400 drives the second roller 220 to rotate, so that the second roller 220 rotates relative to the first roller 210, thereby driving the edge sealing tape 600 and the heat transfer film 500 to move. Multiple roller assemblies 200 are arranged on the frame 100, so that the edge sealing tape 600 and the heat transfer film 500 are driven along the arrangement direction of the multiple roller assemblies 200. The heating component 300 heats the heat transfer film 500, so that the pattern layer on the heat transfer film 500 is detached. During the transmission process, the first roller 210 and the second roller 220 apply pressure to the heat transfer film 500 and the edge sealing tape 600, so that the pattern layer on the heat transfer film 500 is transferred to the surface of the edge sealing tape 600, thus realizing the heat transfer operation of the edge sealing tape 600.

[0025] The heat transfer film 500 is the medium material used to achieve surface decoration in the heat transfer process. Generally, the transfer film includes a base film, a release layer, a pattern layer, and an adhesive layer. The base film is usually a heat-resistant PET film that does not change during the transfer process and only serves as a load-bearing element. The release layer is located on top of the base film and melts when heated, causing the pattern layer to separate from the base film. The adhesive layer is the outermost layer of the transfer film and melts when heated, firmly bonding the pattern layer to the sealing tape 600. The first roller 210 or the second roller 220, heated by the heating element 300, rolls onto the sealing tape 600 covering the heat transfer film 500 with a set pressure. The first roller 210 or the second roller 220 transfers heat to the heat transfer film 500, causing the release layer to melt and the adhesive layer to activate. Under pressure, the molten adhesive layer firmly presses the pattern layer into the tiny pores of the material at the edge of the sealing tape 600. After hot pressing, the heat transfer film 500 is lifted, the release layer breaks, and the pattern layer and adhesive layer separate from the base film, thus leaving the pattern layer intact on the sealing tape 600. After the transfer is completed, the adhesive layer cools and solidifies rapidly, and the pattern is fixed to the edge of the sealing tape 600. In this embodiment, the first roller 210 is disposed above the second roller 220, and the heating element 300 is used to heat the first roller 210. The first roller 210 rolls on the surface of the heat transfer film 500 to transfer heat to the heat transfer film 500.

[0026] like Figures 1 to 5As shown, the first roller 210 is disposed above the second roller 220 along the height direction of the frame 100. The first roller 210 can be located above the second roller 220, or vice versa; this embodiment of the invention does not impose any particular limitation on this. In this embodiment, [A2] the first roller 210 is located above the second roller 220. The second roller 220 rotates relative to the first roller 210 under the action of the driving member 400. While driving the heat transfer film 500 and the sealing tape 600, the first roller 210 transfers the heat from the heating member 300 to the heat transfer film 500, improving the uniformity of heating of the heat transfer film 500.

[0027] like Figures 1 to 5 As shown, in some embodiments, the heat transfer apparatus includes a heating cover 110, which is disposed on the frame 100. The first roller 210 and the heating element 300 are located inside the heating cover 110. The heating cover 110 can concentrate the heat emitted by the heating element 300, focusing the heat on the surface of the first roller 210, reducing heat loss and improving heating efficiency. In addition, the heating cover 110 forms a physical barrier for the first roller 210, reducing the amount of impurities and dust falling onto the first roller 210. The heating cover 110 is located on the side of the first roller 210 away from the heat transfer film 500, preventing interference between the heating cover 110 and the heat transfer film 500, so as to ensure that the heat transfer film 500 and the sealing tape 600 can be smoothly transmitted through the gap between the first roller 210 and the second roller 220. In this embodiment, the heating cover 110 is located on the upper side of the first roller 210.

[0028] like Figures 1 to 5 As shown, in some embodiments, the heating element 300 includes multiple heating rods 310 disposed on the inner wall of the heating cover 110. The multiple heating rods 310 improve heating efficiency; if one heating rod 310 is damaged, it will not affect the overall heat transfer operation. The multiple heating rods 310 are arranged inside the heating cover 110, with adjacent heating rods 310 having the same spacing, to achieve uniform heating of the first roller 210, thereby ensuring uniform heating of the heat transfer film 500. Five or six heating rods 310 can be provided; this embodiment of the invention does not particularly limit the number of heating rods 310. The heating rods 310 are generally tubular electric heaters.

[0029] like Figures 1 to 5As shown, in some embodiments, the heating cover 110 is bent to form a recess 111, and the first roller 210 is located in the recess 111. The recess 111 formed by the bending of the heating cover 110 makes the inner surface of the heating cover 110 form an arc shape. The arc-shaped inner surface has a heat-gathering effect, which helps to concentrate the heat to the outer surface of the first roller 210. Moreover, the arc-shaped inner surface can better match the outer surface of the first roller 210, increasing the heat-receiving area of ​​the first roller 210 and improving the heating efficiency. After heating, the first roller 210 rolls on the heat transfer film 500 to evenly transfer the heat to the heat transfer film 500, so as to achieve uniform heating of the heat transfer film 500, ensure the activation effect of the pattern of the heat transfer film 500 and the stable transfer to the sealing tape 600. Reflective material can be added to the inner surface of the recess 111 so that the heat is reflected back to the first roller 210 through the inner surface of the recess 111, thereby improving the heating effect.

[0030] like Figures 1 to 5 As shown, in some embodiments, multiple heating elements 300 and heating covers 110 are provided, and the heating elements 300, heating covers 110 and roller assemblies 200 are provided in a one-to-one correspondence; that is, each roller assembly 200 is equipped with an independent heating element 300 and heating cover 110, so that the heat transfer film 500 can receive heat at different positions in the heat transfer device; with this arrangement, the temperature of different roller assemblies 200 can be adjusted according to process requirements, which is highly flexible.

[0031] like Figures 1 to 5 As shown, in some embodiments, the roller assembly 200 further includes a heat insulation element that covers the outside of the heating cover 110. The heat insulation element is used to isolate heat, reduce heat loss during the heat transfer process, and improve heat utilization efficiency. Generally, the heat insulation element is heat insulation cotton.

[0032] like Figures 1 to 5 As shown, in some embodiments, the heat transfer apparatus further includes a fixing mesh, which is wrapped around the heating cover 110, and a heat insulation component is disposed between the fixing mesh and the heating cover 110 to ensure that the heat insulation component is firmly fixed to the outer surface of the heating cover 110, reducing the possibility that the heat insulation component may fall off due to heat and interfere with the heat transfer process; the fixing mesh ensures that the heat insulation component is firmly fixed to the outside of the heating cover 110, reducing the possibility that the heat insulation component may loosen or deform under long-term high temperature; the fixing mesh has a mesh structure, which can reduce the amount of material used for the fixing mesh while ensuring the fixing effect.

[0033] like Figures 1 to 5As shown, in some embodiments, the outer peripheral edge of the fixing mesh is connected to the outer peripheral edge of the heating cover 110, forming an installation space for the heat insulation component between the fixing mesh and the heating cover 110, so as to ensure that the heat insulation component can cover the outer surface of the heating cover 110. The area of ​​the fixing mesh is greater than or equal to the area of ​​the heating cover 110. The fixing mesh and the heating cover 110 can be connected by welding.

[0034] like Figures 1 to 5 As shown, in some embodiments, the roller assembly 200 further includes a cylinder 230 and a movable frame 240. The cylinder 230 is disposed on the frame 100, and the movable frame 240 is movably disposed on the frame 100 along the height direction of the frame 100. The first roller 210 is rotatably connected to the movable frame 240. The extension shaft of the cylinder 230 is connected to the movable frame 240. When the cylinder 230 operates, the movable frame 240 rises or falls, thereby causing the first roller 210 to move away from or closer to the second roller 220, thus adjusting the gap between the first roller 210 and the second roller 220. The gap between the first roller 210 and the second roller 220 can be adjusted by the cylinder 230 to accommodate edge sealing tape 600 and heat transfer film 500 of different thicknesses. In addition, adjusting the gap between the first roller 210 and the second roller 220 by the cylinder 230 facilitates the placement or removal of the edge sealing tape 600 and the heat transfer film 500. The roller assembly 200 also includes a regulating valve 250, which is located at the air inlet of the cylinder 230. The regulating valve 250 can adjust the opening of the air inlet, thereby controlling the air pressure and flow rate entering the cylinder 230. The regulating valve 250 can also adjust the output force of the cylinder 230, thereby indirectly controlling the downward pressure applied by the movable frame 240 to the first roller 210. This allows for adjustment of the pressure between the first roller 210 and the second roller 220 based on the material and thickness of the sealing tape 600 and the heat transfer film 500, ensuring the transfer quality of the transferred pattern under different process conditions. The cooperation between the regulating valve 250 and the cylinder 230 is prior art and will not be described in detail here.

[0035] like Figures 1 to 5As shown, in some embodiments, the first roller 210 is a high-temperature rubber roller. Using a high-temperature rubber roller as the first roller 210 allows the heat on the first roller 210 to be conducted more evenly to the heat transfer film 500. Because the high-temperature rubber roller has high-temperature resistance, the first roller 210 remains stable under prolonged high-temperature operation. The elastic material of the high-temperature rubber roller provides a flexible pressing force, allowing the first roller 210 to press the edge sealing tape 600 and the heat transfer film 500 more gently, preventing damage to either the edge sealing tape 600 or the heat transfer film 500. The thermal conductivity and heat resistance of the high-temperature rubber roller ensure that the first roller 210 can transfer the heat from the heating cover 110 to the heat transfer film 500, improving the transfer quality and reducing indentations or localized poor transfer that may occur with rigid pressing.

[0036] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined in this application.

Claims

1. A heat transfer printing apparatus characterized by comprising: include: frame; Multiple roller assemblies are arranged in the frame; each roller assembly includes a first roller and a second roller rotatably connected to the frame, the first roller and the second roller are arranged along the height direction of the frame, and a gap is formed between the first roller and the second roller for the sealing tape and the heat transfer film to pass through. A heating element is disposed on the frame and is used to heat the heat transfer film; A drive unit, connected to the second roller and used to drive the second roller to rotate, wherein the edge sealing tape and the heat transfer film are driven between the first roller and the second roller, so that the pattern on the heat transfer film is transferred to the edge sealing tape.

2. The heat transfer apparatus according to claim 1, characterized in that, The heat transfer device includes a heating cover, which is disposed on the frame. The first roller and the heating element are located inside the heating cover, and the heating cover is located on the side of the first roller away from the heat transfer film.

3. The heat transfer apparatus according to claim 2, characterized in that, The heating element includes a plurality of heating rods, which are disposed on the inner wall of the heating cover.

4. The heat transfer apparatus according to claim 2, characterized in that, The heating cover is bent to form a recess, and the first roller is located in the recess.

5. The heat transfer apparatus according to claim 2, characterized in that, Multiple heating elements and heating covers are provided respectively, and the heating elements, heating covers and roller assemblies are provided in a one-to-one correspondence.

6. The heat transfer apparatus according to claim 2, characterized in that, The heat transfer device also includes a heat insulation component that covers the outside of the heating cover and is used to insulate against heat.

7. The heat transfer apparatus according to claim 6, characterized in that, The heat transfer device also includes a fixing mesh, which is wrapped around the heating cover, and the heat insulation element is disposed between the fixing mesh and the heating cover.

8. The heat transfer apparatus according to claim 7, characterized in that, The outer peripheral edge of the fixing mesh is connected to the outer peripheral edge of the heating cover, and the fixing mesh and the heating cover form an installation space for the heat insulation component.

9. The heat transfer apparatus according to any one of claims 1 to 8, characterized in that, The heat transfer device further includes a cylinder and a movable frame. The cylinder is disposed on the frame, and the movable frame is movably disposed on the frame along the height direction of the frame. The first roller is rotatably connected to the movable frame. The extension shaft of the cylinder is connected to the movable frame.

10. The heat transfer apparatus according to any one of claims 1 to 8, characterized in that, The first roller is a high-temperature rubber wheel.

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