CN219173837U

CN219173837U - Winding tensioning device

Info

Publication number: CN219173837U
Application number: CN202223553809.6U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Zhuhai Xinye Electronic Technology Co Ltd
Current assignee: Zhuhai Xinye Electronic Technology Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-13
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a coiled belt tensioning device, which comprises a tension spring, a rotating part and a friction part, wherein the friction part comprises a fixing piece and a rotating piece, the rotating piece can rotate around an axis relative to the fixing piece, the rotating piece is abutted against the fixing piece and has friction resistance with the fixing piece when rotating, the rotating part can rotate around the axis, a first end of the tension spring is connected with the rotating piece, a second end of the tension spring is connected with the rotating part, the rotating part is rotated by pulling the rotating piece through the tension spring when rotating, the rotating part is used for fixing coiled belt, and the rotating part is driven to rotate when the coiled belt rotates. The device can have constant tension on the winding unreel, has low production cost and smaller volume compared with the traditional tensioning device.

Description

Winding tensioning device

Technical Field

The present application relates to the field of printers, and more particularly to a tape tensioner.

Background

In printer technical field, generally need unreeling device to carry out the constant force unreeling to the printing scroll, guarantee to print smooth and easy, traditional unreeling device is in order to guarantee the invariable of unreeling tensioning dynamics, is carried out by servo or moment motor cooperation circuit control device usually, and the cost of manufacture is higher to comparatively complicated, whole unreeling device volume is also great, is difficult to apply to in the less equipment board.

Therefore, there is a need for a tape tensioner that solves the problems of the prior art devices, enables constant force tensioning, is small in size, and is inexpensive to manufacture.

Disclosure of Invention

The utility model provides a winding tensioning device, which mainly aims to solve the problems of complex structure, large volume and high cost of the existing unreeling device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the embodiment of the application provides a winding tensioning device, including extension spring, rotation portion and friction portion, the friction portion includes mounting and rotating member, the rotating member can be relative the mounting is rotatory around an axis, the rotating member butt in the mounting and when rotatory with there is frictional resistance with the mounting, rotation portion can be winds the axis is rotatory, extension spring first end connect in rotating member, second end connect in rotation portion, through the extension spring pulling when rotation portion rotates the rotating member is rotatory, rotation portion is used for fixed winding, the winding drives when rotating rotation portion rotates.

Preferably, the rotating part is a rotating shaft, the rotating part and the fixing part are respectively provided with a first opening and a second opening at the intersection of the rotating part and the axis, one end of the rotating shaft sequentially penetrates through the first opening and the second opening along the axis, and the rotating shaft can rotate around the axis in the first opening and the second opening.

Preferably, the fixing piece comprises a fixed friction wheel and a fixing seat, the fixed friction wheel is installed on the fixing seat and is abutted to the rotating piece, the fixing seat is provided with a bearing, the second opening is formed in the fixing seat, one end of the rotating shaft penetrates through the second opening and is inserted into the bearing, and the rotating shaft rotates around the axis through the bearing.

Preferably, the rotating member includes a rotating friction wheel and a turntable, the rotating friction wheel is abutted to the fixed friction wheel and has friction resistance with the fixed friction wheel when rotating, the turntable is fixedly connected with the rotating friction wheel and rotates together with the rotating friction wheel around the axis, and the first end of the tension spring is connected with the turntable.

Preferably, the rotating shaft is provided with an adjusting piece, the adjusting piece is sleeved on the rotating shaft and rotates along with the rotating shaft, the adjusting piece is in press connection with the rotating disc and tightly presses the rotating piece and the fixing piece, and the second end of the tension spring is connected with the adjusting piece.

Preferably, a limiting part is arranged on the rotating shaft, the winding belt is installed on the rotating shaft and matched with the limiting part, and the rotating shaft is driven to rotate through the limiting part when the winding belt rotates.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

according to the winding tensioning device, electrical devices such as a servo motor are not required, the friction force through the fixed friction wheel and the rotary friction wheel plays a resistance role in drawing out the winding, the rotating part of the installation winding is connected with the rotary friction wheel through the tension spring, the tension spring plays a role in balancing friction, the rotation friction force between the fixed friction wheel and the rotary friction wheel is prevented from being discontinuous, the resistance of the winding device during winding is constant, the smooth winding can be ensured, the winding device is exquisite in structure and can be designed into a smaller volume, the winding device is convenient to install in a small printer, the production cost of the winding device is greatly reduced compared with that of the traditional structure, the winding device is exquisite in structure, and maintenance and replacement are convenient.

Drawings

The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.

FIG. 1 is a schematic diagram of one embodiment of the present utility model.

Fig. 2 is a left side view of an embodiment of the present utility model.

FIG. 3 is a schematic cross-sectional view of one embodiment of the present utility model.

Fig. 4 is a schematic partial structure of the portion a in fig. 3.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The inventor finds that aiming at the technical field of printers, the existing tape tensioning device has the defects of complex structure, higher cost, larger volume and difficulty in being applied to smaller equipment.

In view of this, referring to fig. 1 to 4, this embodiment provides a winding tensioning device, including the extension spring 1, the rotating part 2 and the friction part 3, the rotating part 2 is the part of fixed winding, the winding drives the rotating part 2 to rotate jointly when drawing and rotating, the friction part 3 is the part that produces the tensioning force, the friction part 3 mainly divides into two parts of mounting 4 and rotating part 5, mounting 4 is motionless, rotating part 5 can rotate around an axis for mounting 4, and there is a contact surface in rotating part 5 and mounting 4, both butt together, there is a frictional resistance with mounting 4 when rotating part 5 rotates, it is to be noted that the rotating part 2 for fixing the winding also rotates around this axis, the both ends of extension spring 1 are connected in rotating part 5 and rotating part 2 respectively, the specific transmission logic of this device is, when the winding is drawn and is rotated by the winding, the rotating part 2 for fixing the winding can rotate simultaneously, at this moment, extension spring 1 and rotating part 2 and rotating part 5 can be elongated, with gradually pulling out with the extension spring 1, there is a constant pulling force to rotating part 5, can not be a constant pulling force to the rotating part 5 because of the extension spring 1 is to the rotating part 5 and the frictional resistance is not had, and the frictional resistance is kept constant between rotating part 1 and rotating part 5 can be kept constant because of the pulling force is not to be kept constant to be pulled to rotate 1, and the rotating part 1 is kept constant, and the pulling force is not kept constant to be pulled to rotate 1, and is kept constant to be pulled to rotate and is not 1. It should be noted that, the tension spring 1 plays a role in stabilizing tension force, because the relative rotation friction force between the rotating member 5 and the fixing member 4 is not stable, because of the limitation of the production process, the abrasion in the practical use process is added, if the tension spring 1 is not provided, the situation of jamming discontinuity is easy to occur when the coiled tape is pulled out, a certain negative effect is caused on the use, and the tension spring 1 is connected between the rotating portion 2 and the rotating member 5, the rotating member 5 is pulled to rotate through the rotation of the rotating portion 2, the tension force generated by the whole device is constant due to the fact that the time of stretching and retracting the tension spring 1 balances the friction force is large and small, and the coiled tape is very smooth and linear when being pulled out.

In some embodiments, the rotating part 2 is a rotating shaft, as shown in fig. 1 and fig. 2, the winding belt is sleeved and fixed on the rotating shaft, a first opening and a second opening are respectively formed at the central positions of the rotating part 5 and the fixing part 4 of the friction part 3, as shown in fig. 2 to fig. 4, one end of the rotating shaft sequentially penetrates through the first opening and the second opening along the axial direction, the rotating shaft rotates in the first opening and the second opening, and it is noted that the rotating shaft does not have great resistance in the first opening and the second opening, and the resistance to the rotating shaft rotation mainly comes from the tension and the friction force of the tension spring 1.

Under some embodiments, the fixing part 4 comprises a fixed friction wheel 9 and a fixing seat 10, the fixed friction wheel 9 is annular, and is fixed on the fixing seat 10 through an adhesive 14 or a screw, the second opening is arranged on the fixing seat 10, the annular central opening of the fixed friction wheel 9 is aligned with the second opening and is positioned on a rotating shaft line, a bearing 13 is arranged in the fixing seat 10, the rotating shaft penetrates through the second opening and the central opening of the fixed friction wheel 9 and is inserted on the bearing 13, the rotating shaft rotates around the axis line on the bearing 13, and the fixed friction wheel 9 and the rotating part 5 are in butt joint and have friction force.

Under some embodiments, the rotating member 5 includes a rotating friction wheel 11 and a turntable 12, which are also fixedly connected by glue or screws, the rotating friction wheel 11 is abutted to the fixed friction wheel 9, the rotating friction wheel 11 and the turntable 12 are annular and are provided with a first opening at the center, the rotating shaft penetrates through the first opening, the turntable 12 and the rotating friction wheel 11 rotate around the axis, the first end of the tension spring 1 is connected to the turntable 12, the rotating friction wheel 11 is not large enough, the tension spring 1 needs to be elongated by a certain distance, the radius of rotation is increased by connecting the turntable 12, and the tension spring 1 is connected to the turntable 12 to obtain a sufficient elongated space.

In some embodiments, the adjusting plate 6 is sleeved and fixed on the rotating shaft, as shown in fig. 2 and fig. 4, the adjusting plate 6 and the rotating shaft rotate together, when the rotating shaft is inserted into the bearing 13 along the rotating shaft direction, the adjusting plate 6 will be pressed against the rotating disc 12, the rotating member 5 and the fixing member 4 are tightly pressed by the pressure of the rotating disc 12, as the contact surface between the fixed friction wheel 9 and the rotating friction wheel 11 is a rough surface, a certain friction force is generated between the rotating friction wheel 11 and the fixed friction wheel 9 when the pressure of the adjusting plate 6 rotates, and it is noted that the second end of the tension spring 1 is connected to the adjusting plate 6, and when the rotating shaft and the adjusting plate 6 fixed on the rotating shaft rotate, the tension spring 1 is pulled, as shown in the figure, the bolts 8 are fixed on the adjusting plate 6 and the rotating disc 12 in the embodiment, and the two ends of the tension spring 1 are respectively fixed on the two bolts 8.

In some embodiments, a limiting piece 7 is arranged on the rotating shaft, as shown in fig. 1 and 3, the limiting piece 7 is a spring piece fastened on the rotating shaft by two screws, corresponding buckling positions are arranged on the inner side of the winding belt and matched with the limiting piece 7, when the winding belt is sleeved on the rotating shaft, the buckling positions are buckled into the limiting piece 7, and the winding belt rotates when being extracted and drives the rotating shaft to rotate through the limiting piece 7 on the rotating shaft.

The above examples illustrate only one embodiment of the utility model, which is described in more detail and is not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a take-up tensioning device, its characterized in that, includes extension spring, rotation portion and friction portion, friction portion includes mounting and rotating member, the rotating member can be relative the mounting is rotatory around an axis, the rotating member butt in the mounting and when rotatory with there is frictional resistance with the mounting, rotation portion can be around the axis is rotatory, extension spring first end connect in rotating member, second end connect in rotation portion, through the extension spring pulling when rotation portion rotates the rotating member is rotatory, rotation portion is used for fixed winding, the winding drives when rotating rotation portion rotates.

2. A tape tensioner according to claim 1, wherein said rotating portion is a rotating shaft, said rotating member and said fixing member are provided with a first opening and a second opening, respectively, at intersections with said axes, one end of said rotating shaft penetrates said first opening and said second opening in order along said axes, and said rotating shaft is rotatable about said axes in said first opening and said second opening.

3. A tape tensioner according to claim 2, wherein said fixing member comprises a fixed friction wheel and a fixing base, said fixed friction wheel is mounted to said fixing base and abuts against said rotating member, said fixing base is provided with a bearing, said second opening is provided in said fixing base, one end of said rotary shaft penetrates said second opening and is inserted into said bearing, and said rotary shaft rotates around said axis through said bearing.

4. A tape tensioner according to claim 3, wherein said rotary member comprises a rotary friction wheel abutting against said fixed friction wheel and having a frictional resistance with said fixed friction wheel when rotated, and a turntable fixedly connected to said rotary friction wheel and rotatable about said axis with said rotary friction wheel, said tension spring having a first end connected to said turntable.

5. A tape tensioner according to claim 4, wherein said shaft is provided with an adjusting piece which is sleeved on said shaft and rotates with said shaft, said adjusting piece is press-fitted to said turntable and tightly press-fitted to said rotatable member and said fixed member, and said second end of said tension spring is connected to said adjusting piece.

6. A tape tensioner according to claim 5, wherein the shaft is provided with a stopper, the tape is mounted on the shaft and is matched with the stopper, and the shaft is rotated by the stopper when the tape rotates.