CN214522816U

CN214522816U - Adhesive tape conveying mechanism for thermal transfer printer and thermal transfer printer

Info

Publication number: CN214522816U
Application number: CN202022678055.1U
Authority: CN
Inventors: 王新明; 杨华
Original assignee: Hunan Dingyi Zhiyuan Technology Development Co Ltd
Current assignee: Hunan Dingyi Zhiyuan Technology Development Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-10-29
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a sticky tape conveying mechanism and thermal transfer printer for thermal transfer printer. The rubber belt conveying mechanism comprises a first conveying assembly, a driving assembly and a brake. The first conveying assembly comprises a first roller and a first roller shaft, the first roller is arranged on the first roller shaft, and the first roller shaft can drive the first roller to rotate; the driving assembly is connected with the first roller shaft and can drive the first roller shaft to rotate; the brake is connected with the driving assembly and can brake the driving assembly. From this, when the staff need stop carrying the sticky tape or change the direction of delivery of sticky tape, can make the sticky tape by the centre gripping stop in current position accurately through the stopper, avoid first conveying assembly to produce motion inertia, guarantee the conveying precision of sticky tape, promote the printing quality of printing the product.

Description

Adhesive tape conveying mechanism for thermal transfer printer and thermal transfer printer

Technical Field

The utility model relates to a thermal transfer printer field particularly relates to a sticky tape conveying mechanism and thermal transfer printer for thermal transfer printer.

Background

Thermal transfer printers are widely used in various industries because of their advantages such as high printing speed and long storage time of printed products.

In the prior art, a thermal transfer printer is provided with a tape conveying mechanism for conveying a tape, wherein the tape conveying mechanism is driven by a driving motor. In the process of printing, when the conveying of the adhesive tape needs to be stopped or the conveying direction of the adhesive tape needs to be changed, only the driving motor is controlled to stop or the rotating direction of the driving motor is controlled to change. Due to errors of motion inertia and transmission precision, the mode of controlling the driving motor can reduce the conveying precision of the adhesive tape, and further influences the printing quality.

Therefore, it is desirable to provide a tape conveying mechanism for a thermal transfer printer and a thermal transfer printer to at least partially solve the above problems.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

According to the utility model discloses an aspect provides a rubber belt conveyor for thermal transfer printer, rubber belt conveyor includes:

the first conveying assembly comprises a first roller and a first roller shaft, the first roller is mounted on the first roller shaft, and the first roller shaft can drive the first roller to rotate;

the driving assembly is connected with the first roller shaft and can drive the first roller shaft to rotate; and

a brake coupled to the drive assembly and capable of braking the drive assembly.

According to the utility model discloses a rubber belt conveying mechanism, including the stopper, the stopper can brake drive assembly to make first conveying assembly stop operation. From this, when the staff need stop carrying the sticky tape or change the direction of delivery of sticky tape, can make the sticky tape by the centre gripping stop in current position accurately through the stopper, avoid first conveying assembly to produce motion inertia, guarantee the conveying precision of sticky tape, promote the printing quality of printing the product.

Optionally, the drive assembly comprises:

a drive motor; and

the output end of the driving motor is connected to the speed reducer, the output end of the speed reducer is connected with the first roller shaft through a coupler, and the brake is arranged at the output end of the speed reducer.

Optionally, the tape conveying mechanism comprises a second conveying assembly, the second conveying assembly comprises a second roller and a second roller shaft, the second roller is rotatably mounted on the second roller shaft, and the first roller shaft and the second roller shaft are parallel to each other.

Optionally, the tape conveying mechanism further comprises a first fixing plate and a second fixing plate, the first conveying assembly and the second conveying assembly are rotatably arranged between the first fixing plate and the second fixing plate, and the driving assembly is arranged on the outer side of the first fixing plate far away from the second fixing plate.

Optionally, the adhesive tape conveying mechanism further comprises a position adjusting assembly, the position adjusting assembly is configured to drive the second conveying assembly to move between the clamping conveying position and the separating position,

when the second conveying assembly is located at the clamping conveying position, the first roller and the second roller are clamped with each other so as to clamp and convey the adhesive tape; when the second conveying assembly is located at the separation position, the first roller and the second roller are separated from each other and spaced apart by a predetermined distance.

Optionally, a support plate is fixedly arranged between the first fixing plate and the second fixing plate, and the position adjusting assembly is arranged on the support plate.

Optionally, the position adjustment assembly comprises:

the second roller shaft can rotatably penetrate through the limiting block;

a link rotatably connected to the stopper and passing through the support plate;

the base is fixedly connected with the supporting plate; and

a knob rotatably disposed in the base and connected to the link.

Optionally, the base has an adjustment inclined surface, the adjustment inclined surface extends along a circumferential direction of a rotation shaft of the knob and obliquely toward a direction away from the limit block, and the knob has an abutting portion capable of abutting against the adjustment inclined surface.

Optionally, one end of the adjusting inclined plane, which is far away from the supporting plate, is further provided with a clamping groove capable of clamping the abutting portion.

According to a second aspect of the present invention, there is provided a thermal transfer printer comprising a tape conveying mechanism according to any one of the first aspect of the present invention.

According to the utility model discloses a thermal transfer printer, including the rubber belt conveying mechanism who is equipped with the stopper, the stopper can brake drive assembly to make first conveying assembly stop operation. From this, when the staff need stop carrying the sticky tape or change the direction of delivery of sticky tape, can make the sticky tape by the centre gripping stop in current position accurately through the stopper, avoid first conveying assembly to produce motion inertia, guarantee the conveying precision of sticky tape, promote the printing quality of printing the product.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.

In the drawings:

fig. 1 is a schematic structural view of a tape conveying mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of the tape feeding mechanism shown in FIG. 1 from another perspective;

FIG. 3 is a schematic view showing a structure of a driving unit in the tape feeding mechanism shown in FIG. 1;

FIG. 4 is a schematic view showing the installation of a position adjusting assembly in the tape feed mechanism shown in FIG. 1;

FIG. 5 is a schematic structural view of the position adjustment assembly shown in FIG. 4; and

fig. 6 is a schematic structural view of the position adjusting assembly shown in fig. 4, wherein the abutting portion is snapped into the snapping groove.

Description of reference numerals:

110: first conveyance assembly 111: first roller

112: first roller shaft 120: second conveying assembly

121: second roller 122: second roller shaft

130: the driving assembly 131: driving motor

132: speed reducer 133: coupling device

134: mounting plate 135: first connecting plate

136: second connecting plate 140: brake

141: the brake body 142: suction cup

150: position adjustment assembly 151: limiting block

152: the connecting rod 153: base seat

154: the adjustment inclined plane 155: clamping groove

156: the knob 157: abutting part

158: the guide block 161: first fixing plate

162: second fixing plate 163: supporting plate

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, the same reference numerals are used to designate the same elements for the sake of clarity, and thus their description will be omitted.

The utility model discloses a sticky tape conveying mechanism and thermal transfer printer for thermal transfer printer, this sticky tape conveying mechanism can carry the sticky tape in the thermal transfer printer accurately to the product of treating the printing realizes printing accurately. Hereinafter, the tape feeding mechanism according to the present invention will be described in detail with reference to fig. 1 to 6. It should be noted that fig. 1 to 6 only show the structure related to the tape conveying mechanism, and the structures and the arrangement of other components of the thermal transfer printer are known to those skilled in the art, and therefore, the detailed description is not shown or described.

In one embodiment according to the present invention, as shown in fig. 1 and 2, the tape conveying mechanism includes a first conveying assembly 110, a second conveying assembly 120, and a driving assembly 130. The first conveying assembly 110 comprises a first roller 111 and a first roller shaft 112, the first roller 111 is mounted on the first roller shaft 112, the first roller 111 and the first roller shaft 112 are coaxially arranged, and when the first roller shaft 112 rotates, the first roller 111 can be driven to synchronously rotate. The driving assembly 130 is connected to the first roller shaft 112 and can drive the first roller shaft 112 to rotate, that is, the driving assembly 130 can provide a rotational driving force for the rotation of the first roller shaft 112.

The second conveying assembly 120 comprises a second roller 121 and a second roller shaft 122, the second roller 121 is rotatably mounted on the second roller shaft 122, and the second roller 121 and the second roller shaft 122 are also coaxially arranged.

In the present embodiment, the first roller shaft 112 and the second roller shaft 122 are parallel to each other, and the second roller shaft 122 is higher than the first roller shaft 112 in the height direction of the tape conveying mechanism. Further, the first roller shaft 112 is provided with a plurality of first rollers 111 arranged at intervals in the axial direction thereof, and the second roller shaft 122 is likewise provided with a plurality of second rollers 121 arranged at intervals in the axial direction thereof.

In the using process, the adhesive tape to be conveyed is clamped between the first roller 111 and the second roller 121, the driving assembly 130 drives the first roller 112 to rotate, so that the first roller 111 rotates, and the second roller 121 passively rotates, so that the clamped adhesive tape moves forwards along the conveying direction.

Further, the tape conveying mechanism in this embodiment further includes a brake 140, and the brake 140 is connected to the driving assembly 130 and can brake the driving assembly 130, that is, the brake 140 can stop the movement of the driving assembly 130 that is running, so as to stop the movement of the first roller 112.

According to the utility model discloses a rubber belt conveying mechanism, including stopper 140, stopper 140 can brake drive assembly 130 to make first conveyor assembly 110 out of service. From this, when the staff need stop carrying the sticky tape or change the direction of delivery of sticky tape, can make the sticky tape by the centre gripping stop at current position accurately through stopper 140, avoid first conveyor components 110 to produce motion inertia, guarantee the conveying precision of sticky tape, promote the printing quality of printing the product.

Specifically, the tape conveying mechanism further includes a first fixing plate 161 and a second fixing plate 162. As shown in fig. 1 and 2, the first fixing plate 161 and the second fixing plate 162 are parallel to each other, and the first transporting unit 110 and the second transporting unit 120 are rotatably disposed between the first fixing plate 161 and the second fixing plate 162. For example, both ends of the first roller shaft 112 are rotatably connected to the first and

second fixing plates

161 and 162, respectively. The driving assembly 130 may be disposed outside the first and

second fixing plates

161 and 162. For example, the driving assembly 130 is disposed at an outer side of the first fixing plate 161 away from the second fixing plate 162.

Further, a support plate 163 is fixedly disposed between the first fixing plate 161 and the second fixing plate 162 so that the relative position between the first fixing plate 161 and the second fixing plate 162 is fixed. Preferably, at least 2 connecting rods are further fixedly disposed between the first fixing plate 161 and the second fixing plate 162, so that the fixed relationship between the first fixing plate 161 and the second fixing plate 162 is more stable.

As shown in fig. 3, the driving assembly 130 may include a driving motor 131 and a reducer 132. The driving motor 131 can generate a rotational driving force, an output end of the driving motor 131 is connected to the speed reducer 132 to transmit the rotational driving force to the speed reducer 132, and an output end of the speed reducer 132 may be connected to the first roller shaft 112 through a coupling 133. Thus, when the driving motor 131 is energized, the driving motor 131 can transmit the rotational driving force to the first roller shaft 112, and the rotational speed of the first roller shaft 112 can be adjusted by the speed reducer 132. Illustratively, the driving motor 131 may be a torque motor, and the reducer 132 may be a turbine reducer.

In the present embodiment, the brake 140 is disposed at the output end of the speed reducer 132, and is not directly connected to the driving motor 131, so that the braking accuracy of the brake 140 can be improved, and the service life of the brake 140 can be prolonged.

As one implementation, the brake 140 may be an electromagnetic brake. Specifically, as shown in fig. 3, the stopper 140 includes a stopper body 141, a suction cup 142, and a fixing member. The brake body 141 is provided with an electric coil, the electric coil can generate a magnetic field after being electrified, the suction cup 142 is at least partially made of a magnetic conductive material, an output shaft of the speed reducer 132 extends outwards and penetrates through the suction cup 142, and the fixing piece can enable the suction cup 142 to be fixedly connected with the output shaft of the speed reducer 132.

In addition, as shown in fig. 3, the driving assembly 130 further includes a mounting plate 134, the driving motor 131 and the speed reducer 132 may be mounted on one side of the mounting plate 134, the other side of the mounting plate 134 is provided with a first connecting plate 135 and a second connecting plate 136 which are arranged at intervals, and the mounting plate 134 may be connected to the first fixing plate 161 by the first connecting plate 135 and the second connecting plate 136. Wherein, the braking body 141 of the brake 140 is fixedly connected with the mounting plate 134, and the suction cup 142 may be disposed between the first connecting plate 135 and the second connecting plate 136. Also, the output shaft of the speed reducer 132 may pass through the mounting plate 134, and the first roller shaft 112 may pass through the first fixing plate 161, whereby the output shaft of the speed reducer 132 may be drivingly connected to the first roller shaft 112 through the coupling 133.

In the normal process of conveying the adhesive tape, the brake 140 is in a power-off state, the driving motor 131 is powered on to rotate the output shaft of the speed reducer 132, and the fixing member and the suction cup 142 rotate synchronously along with the output shaft. When the tape conveying needs to be stopped, the brake 140 is electrified, the electric coil in the brake body 141 generates a magnetic field, the suction cup 142 moves towards the brake body 141 under the action of the magnetic field and is attached to the brake body 141, and the suction cup 142 and the brake body 141 have large friction force, so that the output shaft of the speed reducer 132 immediately stops rotating, and the first roller shaft 112 also stops rotating. It can be understood that when the electric coil is not energized, there is no force between the suction cup 142 and the brake body 141, there is a small gap between the suction cup 142 and the brake body 141 and in a separated state, the suction cup 142 can rotate relative to the brake body 141, and when the suction cup 142 is attached to the brake body 141, since the coupling 133 is disposed between the first roller shaft 112 and the output shaft of the speed reducer 132, the positional accuracy of the first roller shaft 112 is not affected.

Further, in order to prevent the tape from being always pinched between the first roller 111 and the second roller 121, the tape conveying mechanism further includes a position adjusting assembly 150, and the position adjusting assembly 150 can adjust the position of the second conveying assembly 120. In the present embodiment, the position adjustment assembly 150 is configured to drive the second conveying assembly 120 to move between the clamping conveying position and the separating position, so as to adjust the adhesive tape, and improve the flexibility of the operation of the thermal transfer printer. When the second conveying assembly 120 is located at the clamping conveying position, the first roller 111 and the second roller 121 are clamped to each other, the tape to be conveyed is clamped between the first roller 111 and the second roller 121, and at this time, if the first roller 111 rotates, the second roller also rotates in the same direction, and the clamped tape advances toward the direction in which the first roller 111 rotates. When the second feeding unit 120 is located at the separated position, the first roller 111 and the second roller 121 are separated from each other and spaced apart by a predetermined distance, and the tape to be fed is movably placed between the first roller 111 and the second roller 121, and at this time, the tape is released and can be removed.

Specifically, as shown in fig. 4 to 6, the position adjustment assembly 150 may be connected to a support plate 163, which includes a stopper 151, a link 152, a base 153, and a knob 156. The stopper 151 is provided with a through hole, and the second roller shaft 122 rotatably passes through the stopper 151. The link 152 is rotatably coupled to the stopper 151 and passes through the support plate 163. The base 153 is fixedly connected to the support plate 163, and for example, the base 153 is fixedly disposed on a side of the support plate 163 away from the second roller shaft 122. The knob 156 is rotatably disposed in the base 153 and connected to the link 152, and when the knob 156 is rotated, the link 152 is rotated.

Further, as shown in fig. 5 and 6, the end of the base 153 is further provided with an adjustment slope 154, the adjustment slope 154 extends obliquely in the circumferential direction of the rotation axis of the knob 156 and in a direction away from the stopper 151, and the knob 156 has an abutment portion 157 capable of abutting against the adjustment slope 154. Furthermore, the adjusting inclined surface 154 is provided with a locking groove 155 at an end thereof remote from the supporting plate 163, the locking groove being capable of locking the abutting portion 157. Preferably, a return spring capable of applying an elastic force to the knob 156 so that the knob 156 moves toward the support plate 163 is further provided in the base 153. Further, the base 153 is provided with a stopper at one end of the adjustment slope 154 near the support plate 163.

During use, rotation of the knob 156 causes the abutment 157 to abut the lowermost extent of the adjustment ramp 154, and the stop prevents further rotation of the knob 156 and, due to the return spring, prevents the knob 156 from moving up the adjustment ramp 154. At this time, the second conveying assembly 120 is located at the clamping conveying position, the adhesive tape to be conveyed can be clamped between the first roller 111 and the second roller 121, and the return spring also enables the second roller 121 to have enough pressing force on the adhesive tape. When the adhesive tape needs to be loosened, a worker can rotate the knob 156, the abutting portion 157 will move upwards along the adjusting inclined surface 154, and the knob 156 drives the connecting rod 152 and the limiting block 151 to move upwards along the axial direction of the knob 156, so that the second conveying assembly 120 moves towards the direction far away from the first conveying assembly 110 until the abutting portion 157 is clamped in the clamping groove 155. At this time, the second conveyance assembly 120 is located at the separation position, the first roller 111 and the second roller 121 are separated from each other and spaced apart by a predetermined distance, and the adhesive tape can move between the first roller 111 and the second roller 121.

Preferably, 2 or more position adjustment assemblies 150 may be provided on the support plate 163 according to the width of the tape to be conveyed. For example, in the present embodiment, the support plate 163 is provided with 3 position adjustment assemblies 150.

In addition, the position adjustment assembly 150 may also include an electrically actuated rod, such as a hydraulic cylinder, the moving rod of which may be connected to the second conveyor assembly 120 so that the second conveyor assembly 120 may be moved in the energized state.

In order to make the movement of the second conveying assembly 120 more stable, as shown in fig. 4, a side of the support plate 163 facing the second roller shaft 122 may be further provided with a guide block 158, the guide block 158 being provided with a guide groove extending parallel to the axial direction of the second roller shaft 122, the second roller shaft 122 being inserted in the guide groove and being movable between the nip conveying position and the separating position. Exemplarily, in the present embodiment, the support plate 163 is provided with two guide blocks 158 corresponding to both ends of the end portion of the second roller shaft 122, a guide groove is provided in the guide block 158, and the second roller shaft 122 is inserted in the guide groove and is movable between the nip conveying position and the separating position by means of a guide slider provided in the guide groove.

According to the utility model discloses a second aspect still provides a thermal transfer printer, and this thermal transfer printer includes the rubber belt conveyor in above-mentioned embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A tape transport mechanism for a thermal transfer printer, the tape transport mechanism comprising:

2. A tape transport mechanism for a thermal transfer printer according to claim 1, wherein said drive assembly comprises:

a drive motor; and

3. The tape conveying mechanism for a thermal transfer printer according to claim 1 or 2, characterized in that the tape conveying mechanism comprises a second conveying assembly comprising a second roller rotatably mounted on a second roller shaft, and a second roller shaft, the first roller shaft and the second roller shaft being parallel to each other.

4. The tape conveying mechanism for a thermal transfer printer according to claim 3, further comprising a first fixing plate and a second fixing plate, wherein the first conveying assembly and the second conveying assembly are rotatably disposed between the first fixing plate and the second fixing plate, and the driving assembly is disposed on an outer side of the first fixing plate away from the second fixing plate.

5. A tape transport mechanism for a thermal transfer printer according to claim 4, further comprising a position adjustment assembly configured to drive the second transport assembly to move between a nip transport position and a separation position,

6. The tape conveying mechanism for a thermal transfer printer according to claim 5, wherein a support plate is fixedly disposed between the first fixing plate and the second fixing plate, and the position adjusting assembly is disposed on the support plate.

7. A tape transport mechanism for a thermal transfer printer according to claim 6, wherein said position adjustment assembly comprises:

the second roller shaft can rotatably penetrate through the limiting block;

the base is fixedly connected with the supporting plate; and

a knob rotatably disposed in the base and connected to the link.

8. The tape conveying mechanism for a thermal transfer printer according to claim 7, wherein the base has an adjustment slope extending obliquely in a circumferential direction of a rotation shaft of the knob and in a direction away from the stopper, the knob having an abutment portion capable of abutting against the adjustment slope.

9. The tape conveying mechanism for the thermal transfer printer according to claim 8, wherein the end of the adjusting slope away from the supporting plate is further provided with a clamping groove capable of clamping the abutting portion.

10. A thermal transfer printer, characterized in that it comprises a tape transport mechanism according to any one of claims 1 to 9.