Transfer film tensioning mechanism

Abstract

The utility model relates to the technical field of printing machines, and discloses a transfer printing film tensioning mechanism which comprises a winding roller and an unwinding roller which are arranged at the two ends of a working platform, the working platform is used for placing a printing stock for transfer printing, the transfer printing film tensioning mechanism further comprises two film clamping mechanisms, a roller and a driving mechanism, and the two film clamping mechanisms are arranged on the two sides of the working platform respectively. The film clamping mechanism is used for clamping the two sides of the transfer printing film, and after the transfer printing film is clamped by the winding roller, the unwinding roller and the film clamping mechanism, a gap is formed between the transfer printing film located above the printing stock and the printing stock; the roller is arranged above the working platform and is positioned between the winding roller and the unwinding roller; and the driving mechanism is used for driving the working platform or the roller to move up and down. The four sides of the transfer printing film can be tensioned in the two modes that the roller is pressed downwards or the transfer printing film is jacked up through the working platform, it is guaranteed that the transfer printing film flatly covers a printing stock, and therefore the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a transfer film tensioning mechanism. Background Art

[0002] The existing transfer machines (transfer and hot stamping) mainly consist of an unwinding mechanism, a tension control mechanism and a rewinding mechanism for tensioning the transfer film. When the transfer film is covered on the surface of the substrate, the transfer film is only tensioned on the unwinding and rewinding sides, which will cause the transfer film to wrinkle, resulting in poor transfer effect and affecting product quality. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a transfer film tensioning mechanism, which can realize the tensioning of the four sides of the transfer film, ensure the smooth coverage of the transfer film on the substrate, and ensure the product quality.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A transfer film tensioning mechanism comprises a winding roller and an unwinding roller arranged at both ends of a working platform, the working platform is used to place a substrate for transfer, and also comprises a film clamping mechanism, a roller and a driving mechanism, the two film clamping mechanisms are respectively arranged on both sides of the working platform, and are used to clamp the two sides of the transfer film, when the transfer film is clamped by the winding roller, the unwinding roller and the film clamping mechanism, there is a gap between the transfer film above the substrate and the substrate; the roller is arranged above the working platform and between the winding roller and the unwinding roller; the driving mechanism is used to drive the working platform or the roller to move up and down.

[0006] Preferably, the driving mechanism is a lifting cylinder, the cylinder barrel of the lifting cylinder is connected to the frame of the transfer machine, and the telescopic rod of the lifting cylinder is connected to the working platform or the roller.

[0007] Preferably, the film clamping mechanism comprises a film clamping seat, a receiving groove for receiving the transfer film is provided in the film clamping seat, and a clamping block for clamping the transfer film is provided in the receiving groove.

[0008] Preferably, a clamping cylinder is provided on the film clamping seat, and a telescopic rod of the clamping cylinder is connected to the clamping block.

[0009] Preferably, the outer wall of the film clamping seat is provided with a mounting hole penetrating to the accommodating groove, the clamping cylinder is mounted on the outer wall of the film clamping seat, and the telescopic rod of the clamping cylinder passes through the mounting hole to connect with the clamping block.

[0010] Preferably, the accommodating groove penetrates to both ends of the film clamping seat, and there are a plurality of clamping blocks, which are evenly distributed along the length direction of the accommodating groove.

[0011] Preferably, the gap between the transfer film and the substrate is 1 to 4 cm.

[0012] Compared with the prior art, the transfer film tensioning mechanism of the utility model embodiment has the following beneficial effects: a film clamping mechanism for clamping the two sides of the transfer film is respectively arranged on both sides of the working platform, and a roller is arranged above the working platform between the winding roller and the unwinding roller, and a driving mechanism is used to drive the working platform or the roller to move up and down. During transfer, the transfer film passes through the winding roller and the unwinding roller so that the transfer film enters the film clamping mechanism. When the transfer film is clamped by the winding roller, the unwinding roller and the film clamping mechanism, the transfer film covers the substrate and the transfer film is higher than the surface of the substrate.

[0013] When transferring, the roller presses down to press the transfer film onto the substrate. At this time, because the transfer film is fixed all around, the roller presses down to tighten the transfer film, thereby achieving a tightening effect; or the working platform is lifted up to make the substrate higher than the plane of the transfer film, so that the transfer film is lifted up, achieving the effect of tightening the transfer film;

[0014] Both methods can achieve the tightening of the four sides of the transfer film, ensuring the smooth coverage of the transfer film on the substrate, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the transfer film tensioning mechanism of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the roller of the transfer film tensioning mechanism of the utility model moving up and down.

[0017] Figure 3 It is a structural schematic diagram of the up and down movement of the working platform of the transfer film tensioning mechanism of the utility model.

[0018] Among them: 1-working platform, 2-winding roller, 3-unwinding roller, 4-substrate, 5-film clamping mechanism, 51-film clamping seat, 52-clamping block, 53-clamping cylinder, 6-roller, 7-lifting cylinder, 8-transfer film. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1-3 As shown, a transfer film tensioning mechanism of a preferred embodiment of the utility model comprises a winding roller 2 and an unwinding roller 3 arranged at both ends of a working platform 1 of a transfer machine, and the working platform 1 is used to place a substrate 4 for transfer. The transfer film tensioning mechanism also comprises a film clamping mechanism 5, a roller 6 and a driving mechanism, and the roller 6 is preferably a silicone roller. There are two film clamping mechanisms 5, which are respectively arranged on both sides of the working platform 1, and are used to clamp the two sides of the transfer film 8. When the transfer film 8 is clamped by the winding roller 2, the unwinding roller 3 and the film clamping mechanism 5, there is a gap between the transfer film 8 located above the substrate 4 and the substrate 4; the roller 6 is arranged above the working platform 1 and between the winding roller 2 and the unwinding roller 3; the driving mechanism is used to drive the working platform 1 or the roller 6 to move up and down.

[0023] The above-mentioned gap refers to the gap before the working platform 1 or the roller 6 moves up and down, that is, when normally installed, the unwinding roller 3 and the winding roller 1 are arranged in parallel and at the same height, and their highest points are higher than the upper surface of the substrate 4, so that the gap value between them is 1 to 4 cm, such as 2 cm, 3 cm, etc.

[0024] The transfer film tensioning mechanism based on the above technical features is provided with a film clamping mechanism 5 for clamping the two sides of the transfer film 8 on both sides of the working platform 1, and a roller 6 is provided between the winding roller 2 and the unwinding roller 3 above the working platform 1. The driving mechanism is used to drive the working platform 1 or the roller 6 to move up and down. During transfer, the transfer film 8 passes through the winding roller 2 and the unwinding roller 3 so that the transfer film 8 enters the film clamping mechanism 5. When the transfer film 8 is clamped by the winding roller 2, the unwinding roller 3 and the film clamping mechanism 5, the transfer film 8 covers the substrate 4 and the transfer film 8 is higher than the surface of the substrate 4.

[0025] When transferring, the roller 6 presses down to press the transfer film 8 onto the substrate 4. At this time, because the transfer film 8 is fixed around, the roller 6 presses down to tighten the transfer film 8, thereby achieving a tightening effect; or the working platform 1 is lifted up to make the substrate 4 higher than the plane of the transfer film 8, so that the transfer film 8 is lifted up, achieving the effect of tightening the transfer film 8;

[0026] Both of these methods can achieve tightening of the four sides of the transfer film 8, thereby ensuring smooth coverage of the substrate 4 by the transfer film 8, thereby ensuring product quality.

[0027] In this embodiment, the driving mechanism is a lifting cylinder 7 , the cylinder barrel of the lifting cylinder 7 is connected to the frame of the transfer machine, and the telescopic rod of the lifting cylinder 7 is connected to the working platform 1 or the roller 6 . Figure 2 The telescopic rod of the lifting cylinder 7 (not shown in the figure) is connected to the roller 6. The lifting cylinder 7 can be directly connected to the rotating mechanism of the roller 6, and the transfer film 8 is tightened by pressing the roller 6 downward. Figure 3 The telescopic rod of the lifting cylinder 7 is connected to the working platform 1 , so that the transfer film 8 is lifted up by the working platform 1 , thereby achieving a tensioning effect on the transfer film 8 .

[0028] In this embodiment, the film clamping mechanism 5 includes a film clamping seat 51, a receiving groove for receiving the transfer film 8 is provided in the film clamping seat 51, and a clamping block 52 for clamping the transfer film 8 is provided in the receiving groove. When the transfer film 8 enters the receiving groove through the winding roller 2 and the unwinding roller 3, the clamping block 52 moves up or down to clamp the transfer film 8. Specifically, a clamping cylinder 53 is provided on the film clamping seat 51, and the telescopic rod of the clamping cylinder 53 is connected to the clamping block 52, that is, the clamping block 52 is driven by the clamping cylinder 53 to clamp the transfer film 8. For easy installation, the outer wall of the film clamping seat 51 is provided with a mounting hole that passes through the receiving groove, and the clamping cylinder 53 is installed on the outer wall of the film clamping seat 51, and the telescopic rod of the clamping cylinder 53 passes through the mounting hole to connect the clamping block 52. The clamping cylinder 53 can drive the clamping block 52 to move upward to achieve clamping, and at this time, the clamping block 52 cooperates with the upper inner wall of the receiving groove to achieve clamping. The clamping cylinder 53 can also drive the clamping block 52 to move downward to achieve clamping, and at this time, the clamping block 52 cooperates with the upper inner wall of the receiving groove to achieve clamping.

[0029] In this embodiment, the receiving groove runs through both ends of the film clamping seat 51, so that the transfer film 8 can enter the receiving groove. There are multiple clamping blocks 52, and the multiple clamping blocks 52 are evenly distributed along the length direction of the receiving groove, which can achieve all-round clamping of the transfer film 8 in the horizontal direction to ensure the clamping effect. The multiple clamping blocks 52 can also be connected into a whole to form a long strip structure, which can also effectively ensure the clamping effect. Preferably, the clamping block 52 is a whole strip, and the multiple clamping cylinders 53 drive the clamping block 52 to move up and down together.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A transfer film tensioning mechanism, comprising a winding roller and an unwinding roller arranged at both ends of a working platform, the working platform being used to place a substrate for transfer, characterized in that: It also includes a film clamping mechanism, a roller and a driving mechanism. There are two film clamping mechanisms, which are respectively arranged on both sides of the working platform and are used to clamp the two sides of the transfer film. When the transfer film is clamped by the winding roller, the unwinding roller and the film clamping mechanism, there is a gap between the transfer film above the substrate and the substrate; the roller is arranged above the working platform and between the winding roller and the unwinding roller; the driving mechanism is used to drive the working platform or the roller to move up and down.

2. The transfer film tensioning mechanism according to claim 1, characterized in that: The driving mechanism is a lifting cylinder, the cylinder barrel of the lifting cylinder is connected to the frame of the transfer machine, and the telescopic rod of the lifting cylinder is connected to the working platform or the roller.

3. The transfer film tensioning mechanism according to claim 1, characterized in that: The film clamping mechanism comprises a film clamping seat, a receiving groove for receiving the transfer film is arranged in the film clamping seat, and a clamping block for clamping the transfer film is arranged in the receiving groove.

4. The transfer film tensioning mechanism according to claim 3, characterized in that: The film clamping seat is provided with a clamping cylinder, and the telescopic rod of the clamping cylinder is connected to the clamping block.

5. The transfer film tensioning mechanism according to claim 4, characterized in that: The outer wall of the film clamping seat is provided with a mounting hole which penetrates to the accommodating groove, the clamping cylinder is mounted on the outer wall of the film clamping seat, and the telescopic rod of the clamping cylinder passes through the mounting hole to connect with the clamping block.

6. The transfer film tensioning mechanism according to claim 3, characterized in that: The accommodating groove passes through two ends of the film clamping seat, and there are a plurality of clamping blocks, which are evenly distributed along the length direction of the accommodating groove.

7. The transfer film tensioning mechanism according to any one of claims 1 to 6, characterized in that: The gap between the transfer film and the substrate is 1 to 4 cm.

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