CN216942349U

CN216942349U - Wide-width thermal transfer printing device

Info

Publication number: CN216942349U
Application number: CN202220167944.8U
Authority: CN
Inventors: 王军; 唐国初
Original assignee: Hunan Dingyi Zhiyuan Technology Development Co Ltd
Current assignee: Hunan Dingyi Zhizao Digital Equipment Technology Development Co ltd; Hunan Dingyi Zhiyuan Technology Development Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-12
Anticipated expiration: 2032-01-21

Abstract

The utility model relates to a wide-width thermal transfer printing device, which comprises a first pressing component, a printing component and a second pressing component, wherein the first pressing component is arranged on the first pressing component; the first pressing component, the printing component and the second pressing component are sequentially arranged along the moving direction of a transfer medium, the printing component comprises a printing head component positioned on the upper side of the transfer medium and a supporting component positioned under the printing head component, the transfer medium passes through the printing head component and the supporting component, a telescopic mechanism is arranged on one side surface of the supporting component, and a printing head supporting seat is arranged on the upper side of the telescopic mechanism. The utility model can effectively reduce the fluctuation of the wide transfer printing medium in the transfer printing process and improve the transfer printing quality.

Description

Wide-width thermal transfer printing device

Technical Field

The utility model relates to the technical field of thermal transfer printing, in particular to a wide-width thermal transfer printing device.

Background

The thermal transfer printing technology is a product combining a heat transfer principle and a hot stamping technology, is different from ink-jet printing, and has small volume of a thermal printing head due to no ink box, can realize long-time power failure and can quickly recover the printing state. The equipment has no pollution and compact structure, and is commonly used for commercial identification printing or small-size photo-level image printing.

At present, thermal transfer printing is carried out by passing a carbon ribbon through the lower surface of a printing head, pressing the thermal printing head down, and contacting the carbon ribbon with a paper feeding roller. In the printing process, the carbon belt is driven by the winding carbon belt to move, and the paper feeding roller moves the printing medium and the carbon belt in the same direction under the action of power. For wide-width thermal transfer printing, the width of a thermal printing head is mainly increased in wide-width printing on the current market, or the thermal printing head is spliced to obtain a wide effective printing width, the thermal printing head prints a thermal contact line tangent to a lower shaft surface, but the pressure of the printing head is unbalanced in the process of super-wide width transfer printing, the tension of two end surfaces of a transfer printing medium is unbalanced with the tension of the middle part of the transfer printing medium, the surface of the transfer printing medium is uneven due to large fluctuation of the transfer printing medium, the transfer printing quality of the thermal transfer printing is poor, and the printing requirement cannot be met. Wide printing is defined herein as a printable dimension perpendicular to the direction of feed of the transfer medium of 1 meter or more.

Accordingly, those skilled in the art have made efforts to develop a wide thermal transfer apparatus that reduces the occurrence of undulation of a wide transfer medium during transfer and improves transfer quality.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a wide-width thermal transfer printing device, which can reduce the fluctuation of a wide-width transfer printing medium in the transfer printing process and improve the transfer printing quality.

The technical scheme for solving the technical problems is as follows: a wide-width thermal transfer printing device comprises a first pressing component, a printing component and a second pressing component;

the first pressing component, the printing component and the second pressing component are sequentially arranged along the moving direction of a transfer medium, the printing component comprises a printing head component positioned on the upper side of the transfer medium and a supporting component positioned under the printing head component, the transfer medium passes through the printing head component and the supporting component, a telescopic mechanism is arranged on one side surface of the supporting component, and a printing head supporting seat is arranged on the upper side of the telescopic mechanism.

The utility model has the beneficial effects that: in the thermal transfer process, after the transfer medium moves to a proper position, the first pressing component and the second pressing component press and fix the transfer medium, and a printing area keeps large tension and reduces fluctuation; at the moment, the printing head assembly starts to carry out thermal transfer printing on the surface of the transfer medium, and the support assembly right below the printing head assembly supports the transfer medium so as to counteract the acting force of the printing head assembly on the surface of the transfer medium, further keep the stability of the transfer medium and improve the transfer quality.

On the basis of the technical scheme, the utility model can be further improved as follows.

Further, a clamping component used for clamping the transfer printing medium is arranged between the printing component and the second pressing component.

Adopt above-mentioned further scheme's beneficial effect be that the centre gripping subassembly further fastens the transfer printing medium centre gripping, reduces the transfer printing medium fluctuation in the rendition process, improves the rendition quality.

Further, the first and second nip assemblies each include a first roller and a second roller, and the transfer medium passes between the first roller and the second roller with a certain tension.

Adopt above-mentioned further scheme's beneficial effect be that first cylinder rotates and drives the transfer-printing medium and remove along setting for the direction, and the second cylinder is used for with the transfer-printing medium pressfitting on first cylinder surface.

Further, the second roller rolls around a second rotating shaft, and pressing cylinders are arranged on two end portions of the second rotating shaft in the radial direction.

Adopt above-mentioned further scheme's beneficial effect to compress tightly the cylinder and stretch out second cylinder surface and first cylinder surface butt, and the pressfitting is fastened, reduces the transfer-printing medium and undulant.

Further, the support assembly includes a support frame having a transfer medium support surface on a top surface thereof, the transfer medium support surface having an elastomeric buffer layer 215 mounted thereon.

Adopt the beneficial effect of above-mentioned further scheme to be that the holding surface is level and smooth, has elastic buffer layer 215 simultaneously for support the transfer-printing medium, further improve the rendition quality.

Further, the telescopic mechanism comprises a lifting motor, and the output end of the lifting motor is abutted to the printing head support seat 214.

The beneficial effect who adopts above-mentioned further scheme is that elevator motor is used for adjusting the height of beating printer head supporting seat, carries out the adaptability according to the transfer-printing medium of difference and adjusts for beat the pressure between printer head and the medium in the printer head subassembly and keep in the scope of settlement, beat printer head supporting seat simultaneously and have the effect of pushing down the medium edge.

Furthermore, the clamping assembly comprises a pressing plate located on the upper side of the transfer medium and a clamping piece located right below the pressing plate, the pressing plate is connected with the output end of the clamping cylinder, the transfer medium passes through the pressing plate and the clamping piece, and the clamping cylinder contracts to drive the pressing plate to move downwards and abut against the clamping piece.

Adopt above-mentioned further scheme's beneficial effect be that the centre gripping cylinder action makes holder and clamp plate with the rendition medium centre gripping fastening, further reduces undulantly.

Further, the end parts of the transfer medium supporting surfaces are provided with elastic buffer layers.

The beneficial effect of adopting above-mentioned further scheme is that elastic buffer layer is used for leading and buffering the transfer-printing medium, reduces the direct hard contact of transfer-printing medium holding surface and transfer-printing medium, reduces the fish tail.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first pressing component or a second pressing component according to an embodiment of the utility model.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a first press-fit assembly; 101. a first drum; 102. a second drum; 103. a pressing cylinder; 200. A printing assembly; 210. a printhead assembly; 213. a guide portion; 214. a print head support base; 215. an elastic buffer layer; 220. a support assembly; 221. a transfer medium support surface; 230. a telescoping mechanism; 300. a second pressing component; 400. a transfer medium; 500. a clamping assembly; 501. pressing a plate; 502. a clamping cylinder; 503. a clamping member.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the utility model.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in fig. 1 and 2, a wide thermal transfer device includes a first pressing component 100, a printing component 200, and a second pressing component 300, where the first pressing component 100, the printing component 200, and the second pressing component 300 are sequentially disposed along a moving direction of a transfer medium 400, the printing component 200 includes a printhead assembly 210 located on an upper side of the transfer medium 400 and a support component 220 located right below the printhead assembly 210, the transfer medium 400 passes through between the printhead assembly 210 and the support component 220, a telescopic mechanism 230 is disposed on one side surface of the support component 220, and a printhead support base 214 is disposed on an upper side of the telescopic mechanism 230.

In the thermal transfer process, after the transfer medium 400 moves to a proper position, the first pressing component 100 and the second pressing component 300 press and fix the transfer medium 400, so as to reduce fluctuation, at the moment, the printing head component 210 starts thermal transfer on the surface of the transfer medium 400, and the supporting component 220 right below the printing head component 210 supports the transfer medium 400, so as to counteract the acting force of the printing head component 210 on the surface of the transfer medium 400, further maintain the stability of the transfer medium 400 and improve the transfer quality.

A clamping assembly 500 for clamping the transfer medium 400 is further disposed between the printing assembly 200 and the second nip assembly 300. In a specific embodiment, the clamping assembly 500 includes a pressing plate 501 located on the upper side of the transfer medium 400 and a clamping member 503 located right below the pressing plate 501, the pressing plate 501 is connected to the output end of the clamping cylinder 502, the transfer medium 400 passes through the space between the pressing plate 501 and the clamping member 503, and the clamping cylinder 502 contracts to drive the pressing plate 501 to move downward to abut against the clamping member 503. After the transfer medium 400 moves to a proper position, the clamping cylinder 502 acts to clamp the transfer medium 400 between the pressing plate 501 and the clamping member 503 firmly through the pressing plate 501 and the clamping member 503, so that looseness is reduced, and stability of the transfer medium 400 in a printing process of the print head assembly 210 is ensured.

The first and second nip

assemblies

100 and 300 each include a first roller 101 and a second roller 102, the transfer medium 400 passes between the first and

second rollers

101 and 102 with a certain tension, the first and

second rollers

101 and 102 nip the transfer medium 400, and the first roller 101 rotates to move the transfer medium 400. The second roller 102 rolls around the second rotating shaft, the two end parts of the second rotating shaft are radially provided with the pressing cylinders 103, and the pressing cylinders 103 stretch out to enable the surface of the second roller 102 to be in close contact with the surface of the first roller 101, so that the transfer medium 400 is clamped, the transfer medium 400 is conveniently pulled to move when the first roller 101 rotates, and meanwhile, the transfer medium 400 is reduced from shaking in the transfer process.

In another embodiment, the supporting assembly 220 includes a supporting frame, the top surface of the supporting frame has a transfer medium supporting surface 221, the transfer medium supporting surface 221 is provided with an elastic buffer layer 215, and the transfer medium supporting surface 221 is flat and smooth for supporting the transfer medium 400, so as to ensure that the surface of the transfer medium 400 has a certain flatness and improve the printing quality. The end portions of the transfer medium supporting surface 221 are provided with elastic guide portions 213, and the guide portions 213 are used for guiding the transfer medium 400, so that direct hard contact between the transfer medium supporting surface 221 and the transfer medium 400 is reduced, and scratches are reduced. The telescoping mechanism 230 includes a lifting motor, the output end of the lifting motor is abutted against the bottom of the support frame, the lifting motor is a T-shaped motor, the lifting motor has a ball and a nut, and is integrally formed with the screw motor, the lifting motor can accurately control the lifting height of the supporting member, so that the distance between the printing head assembly 210 and the printing head supporting seat 214 can be adjusted according to different adaptability of the transfer medium 400 to be maintained within a set range, and the printing head supporting seat 214 presses the edge of the medium 400.

The working principle of the utility model is as follows: 1) the pressing air cylinders 103 in the first pressing assembly 100 and the second pressing assembly 300 act to continuously clamp the transfer medium 400, the telescopic mechanism 230 moves upwards, one end edge of the medium 400 is separated from the printing head supporting seat 214, the transfer medium 400 stops after moving to a proper position, and the transfer medium 400 has a constant tension of 120N-280N before entering the second pressing assembly 300;

2) during transfer, the medium 400 is pressed by the first pressing component 100, the second pressing component 300 and the pressing plate 501, the transfer medium 400 still maintains a constant tension of 120N to 280N, the print head supporting seat 214 is driven by the telescopic mechanism 230 to move downwards, and the edge of the medium 400 is compacted by the print head supporting seat 214. Then the print head assembly 210 moves downwards, so that the print heads on the print head assembly 210 abut against the print head support 214, the single print head contact force is 50N-100N, the print head assembly 210 continues to move in the direction perpendicular to the moving direction of the medium 400, the print heads in the print head assembly 210 are pressed downwards in sequence, and the downward running of the transfer medium 400 is equal to the number N of the single print head pressure;

3) the clamping cylinder 502 acts to clamp the transfer medium 400 between the pressing plate 501 and the clamping piece 503, and further clamps and fastens the transfer medium 400 due to the abutting piece made of flexible materials at the bottom of the pressing plate 501;

4) the printing head assembly 210 starts to sequentially transfer from left to right, meanwhile, the thermal printing head at the rightmost end face in the printing head assembly 210 descends until the thermal printing head reaches the printing head supporting seat 214 in the printing head assembly 210, the thermal printing head is about to contact with the printing head supporting seat 214, then the pressure adjustment is carried out on the printing head and the transfer medium 400 while the printing head moves, and finally the printing head at the rightmost end face in the printing head assembly 210 contacts with the medium to start to transfer;

5) other thermal print heads in the print head assembly 210 sequentially contact the print head support 214 to adjust the pressure of the thermal print heads, and print as required in sequence, thereby finally completing printing of the whole small image, and meanwhile, the print head support 214 also serves to press the printing starting edge of the transfer medium 400;

6) after the printing system finishes one-time printing, the thermal printing head quickly rises, and then the following components quickly retract to the initial position from the rightmost end to the left end;

7) repeating the steps 2) to 6) until all the transfer is completed.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a broad width heat transfer device which characterized in that: comprises a first stitching assembly (100), a printing assembly (200) and a second stitching assembly (300);

the first pressing component (100), the printing component (200) and the second pressing component (300) are sequentially arranged along the moving direction of a transfer medium (400), the printing component (200) comprises a printing head component (210) located on the upper side of the transfer medium (400) and a supporting component (220) located right below the printing head component (210), the transfer medium (400) penetrates through the printing head component (210) and the supporting component (220), a telescopic mechanism (230) is arranged on one side face of the supporting component (220), and a printing head supporting seat (214) is arranged on the upper side of the telescopic mechanism (230).

2. The wide format thermal transfer printing apparatus according to claim 1, characterized in that: a clamping component (500) used for clamping the transfer medium (400) is further arranged between the printing component (200) and the second pressing component (300).

3. The wide format thermal transfer printing apparatus according to claim 2, characterized in that: the first and second nip assemblies (100, 300) each include a first roller (101) and a second roller (102), and the transfer medium (400) passes between the first roller (101) and the second roller (102) with a certain tension.

4. The wide format thermal transfer printing apparatus according to claim 3, characterized in that: the second roller (102) rolls around a second rotating shaft, and the two ends of the second rotating shaft are provided with a pressing air cylinder (103) in the radial direction.

5. The wide format thermal transfer printing apparatus according to claim 4, characterized in that: the support assembly (220) comprises a support frame, wherein the top surface of the support frame is provided with a transfer medium support surface (221), and an elastic buffer layer (215) is installed on the transfer medium support surface (221).

6. The wide format thermal transfer printing apparatus according to claim 5, characterized in that: the telescopic mechanism (230) comprises a lifting motor, and the output end of the lifting motor is abutted to the printing head support seat (214).

7. The broad thermal transfer device of claim 6, wherein: the clamping assembly (500) comprises a pressing plate (501) located on the upper side of the transfer medium (400) and a clamping piece (503) located right below the pressing plate (501), the pressing plate (501) is connected with the output end of a clamping cylinder (502), the transfer medium (400) passes through the pressing plate (501) and the clamping piece (503), and the clamping cylinder (502) contracts to drive the pressing plate (501) to move downwards and abut against the clamping piece (503).

8. The wide thermal transfer device according to claim 7, wherein: the end parts of the transfer medium supporting surface (221) are provided with elastic buffer layers (215).