Magnetic type rolling seat

By using magnetic suction roller seats in thermal transfer printers, the magnetic suction assembly generates constant friction torque, the ribbon tension control problem is solved, and the stable printing effect is achieved and hardware costs are reduced.

CN222987844UActive Publication Date: 2025-06-17SHANGHAI DIKAI CODING IND
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Patent Information

Application Number
CN202422080164.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-27
Publication Date
2025-06-17
Estimated Expiration
2034-08-27

AI Technical Summary

Technical Problem

In existing thermal transfer printers, it is difficult to control the ribbon tension, resulting in high requirements for the motor control algorithm and difficult to achieve stable printing effects.

Method used

A magnetic suction roller seat is adopted to adsorb the reel through a magnetic suction assembly, so that its end face is pressed against the support member, generating a constant friction torque and ensuring the stability of the ribbon tension.

Benefits of technology

Reliance on motor control algorithms is reduced, hardware costs are reduced, and the ribbon tension is achieved is relatively stable, ensuring efficient and stable printing effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of heat transfer printing, and discloses a magnetic type rolling seat. The magnetic type roll seat comprises a bearing part, a winding drum and a magnetic attraction assembly, the winding drum is arranged on one side of the bearing part, the magnetic attraction assembly is arranged on the other side of the bearing part, and the magnetic attraction assembly can attract the winding drum so that the end face of the winding drum can abut against the side face of the bearing part. The magnetic type winding seat is used as an unwinding seat and works cooperatively with the winding seat to ensure smooth movement of the ribbon. The magnetic attraction assembly attracts the winding drum, so that the winding drum can generate relatively constant friction torque when rotating, the friction torque is generated when tension of the colored tape drives the winding drum to rotate, and due to the fact that the value of the friction torque is relatively constant, the tension of the colored tape is inversely proportional to the winding diameter of the colored tape, and the tension of the colored tape can be stabilized in an interval changing along with the winding diameter of the colored tape. Through the magnetic type rolling seat, the use of one motor of the thermal transfer printer can be reduced, and the hardware cost is reduced; the magnetic attraction assembly is used for providing magnetic attraction force, so that the tension of the ribbon can be relatively stable.
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Description

Technical Field

[0001] The utility model relates to the technical field of thermal transfer printing, in particular to a magnetic suction type roll seat. Background Art

[0002] A thermal transfer printer is a type of printer that can print patterns, barcodes, or time information on the surface of soft and thin packaging labels or smooth cards. The thermal transfer printer uses a print head to press a ribbon onto the surface of a substrate, and then generates heat through a heating element on the print head to melt the ink on the ribbon and press it onto the substrate to complete the printing.

[0003] In the prior art, the ribbon is inserted into a unwind seat, and its free end is fixed to a windup seat. Then, a winding motor drives the windup seat to rotate to drive the ribbon to move. In order to ensure that the ribbon maintains a certain tension, the unwind motor needs to move in coordination with the winding motor, and the step difference between the winding motor and the unwind motor is used to ensure the ribbon tension. However, since the stretching deformation amount of the ribbon is extremely small, the control algorithm requirements for the motor are extremely high and it is very difficult to achieve.

[0004] Therefore, it is necessary to provide a magnetic suction type roll seat to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a magnetic suction type roll seat, which can use a magnetic suction component to provide magnetic suction force to ensure the relative stability of the ribbon tension.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A magnetic suction type roll seat includes:

[0008] A supporting member;

[0009] A reel, the reel is arranged on one side of the supporting member;

[0010] A magnetic suction component, the magnetic suction component is arranged on the other side of the supporting member, and the magnetic suction component can adsorb the reel so that the end face of the reel abuts against the side face of the supporting member.

[0011] Preferably, the magnetic suction type roll seat further includes:

[0012] A main shaft, the reel, the supporting member and the magnetic suction component are sequentially sleeved on the main shaft.

[0013] Preferably, a bearing is arranged between the reel and the main shaft.

[0014] Preferably, the number of the bearings is multiple, and the multiple bearings are distributed along the axial direction of the main shaft.

[0015] Preferably, the magnetic attraction assembly includes:

[0016] A mounting member which is fixedly sleeved on the main shaft. The mounting member is provided with a receiving groove, and the other side of the supporting member abuts against the mounting member;

[0017] A magnetic attraction member which is sleeved on the main shaft and located in the receiving groove.

[0018] Preferably, the supporting member includes:

[0019] A supporting portion against which the end face of the reel can abut;

[0020] A fixing portion which is clamped with the mounting member.

[0021] Preferably, the material of the supporting member is polyethylene.

[0022] Preferably, the material of the reel is stainless steel.

[0023] Preferably, the end face of the reel is provided with a wear-resistant coating.

[0024] Preferably, the side face of the supporting member is provided with a wear-resistant coating.

[0025] The beneficial effects of the present utility model:

[0026] This magnetic attraction type reel seat includes a supporting member, a reel and a magnetic attraction assembly. The reel is arranged on one side of the supporting member, and the magnetic attraction assembly is arranged on the other side of the supporting member. The magnetic attraction assembly can adsorb the reel so that the end face of the reel abuts against the side face of the supporting member.

[0027] It can be understood that the magnetic attraction type reel seat is used as a pay-off reel seat and can work together with the take-up reel seat to ensure the smooth movement of the ribbon. When it is necessary to drive the ribbon to move, the take-up reel seat rotates under the drive of the motor to provide traction force for the ribbon, and the reel starts to rotate under the action of the ribbon traction force. Since the magnetic attraction assembly will adsorb the reel, a relatively constant frictional torque will be generated when the reel rotates. For the convenience of description, it is defined that the magnitude of the magnetic attraction force of the magnetic attraction assembly on the reel is F, the friction coefficient between the reel and the supporting member is μ, the inner diameter of the end face of the reel is R1, and the outer diameter is R2. Then the frictional torque generated when the reel rotates at this time: Wherein, T is defined as the tension of the ribbon, and r is the roll diameter of the ribbon. It can be understood that the frictional torque of the reel is generated by the rotation of the reel driven by the tension of the ribbon. Since the value of the frictional torque is relatively constant, the tension of the ribbon is inversely proportional to the roll diameter of the ribbon, that is, the tension of the ribbon will be stabilized within an interval that varies with the roll diameter of the ribbon. Through this magnetic adsorption type reel seat, the thermal transfer printer can reduce the use of one motor, reducing the hardware cost; by using the magnetic adsorption component to provide magnetic attraction, a frictional force is generated between the reel and the supporting member, thereby generating a constant frictional torque to ensure the relative stability of the ribbon tension during the printing process. Without the support of a complex control algorithm, an efficient and stable printing effect can be achieved. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the magnetic adsorption type reel seat provided by the present utility model;

[0029] Figure 2 is a cross-sectional view of the magnetic adsorption type reel seat provided by the present utility model.

[0030] In the figure:

[0031] 1. Supporting member; 11. Supporting part; 12. Fixing part;

[0032] 2. Reel;

[0033] 3. Magnetic adsorption component; 31. Mounting member; 32. Magnetic adsorbing member;

[0034] 4. Main shaft;

[0035] 5. Bearing. Detailed Embodiment

[0036] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all structures.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] In the prior art, the ribbon is inserted on the unwinding seat, and its free end is fixed on the winding seat. Then, the winding motor drives the winding seat to rotate to drive the movement of the ribbon. In order to ensure that the ribbon maintains a certain tension, the unwinding motor needs to move in coordination with the winding motor, and the step difference between the winding motor and the unwinding motor is used to ensure the ribbon tension. However, since the stretching deformation amount of the ribbon is extremely small, the control algorithm requirements for the motor are extremely high and it is very difficult to achieve.

[0041] To solve the above problems, as Figure 1 - Figure 2 shown, this embodiment provides a magnetic adsorption type reel seat. This magnetic adsorption type reel seat includes a supporting member 1, a reel 2 and a magnetic adsorption assembly 3. The reel 2 is arranged on one side of the supporting member 1, and the magnetic adsorption assembly 3 is arranged on the other side of the supporting member 1. The magnetic adsorption assembly 3 can adsorb the reel 2 so that the end face of the reel 2 abuts against the side face of the supporting member 1.

[0042] It can be understood that the magnetic adsorption type reel seat in this embodiment is used as an unwinding seat and can work in coordination with the winding seat to ensure the smooth movement of the ribbon. When it is necessary to drive the movement of the ribbon, the winding seat rotates under the drive of the motor to provide tension to the ribbon, and the reel 2 starts to rotate under the action of the tension of the ribbon. Since the magnetic adsorption assembly 3 will adsorb the reel 2, a constant frictional torque will be generated when the reel 2 rotates. For the convenience of description, it is defined that the magnitude of the magnetic attraction force of the magnetic adsorption assembly 3 on the reel 2 is F, the friction coefficient between the reel 2 and the supporting member 1 is μ, the inner diameter of the end face of the reel 2 is R1, and the outer diameter is R2. Then, the calculation formula for the frictional torque generated when the reel 2 rotates at this time is: Among them, define T as the tension of the ribbon and r as the roll diameter of the ribbon. It can be understood that the frictional torque of the reel is generated by the rotation of the reel driven by the tension of the ribbon. Since the value of the frictional torque is relatively constant, the tension of the ribbon is inversely proportional to the roll diameter of the ribbon, that is, the tension of the ribbon will be stable within a range that changes with the roll diameter of the ribbon. Through this magnetic suction type roll seat, the thermal transfer printer can reduce the use of one motor and lower the hardware cost; by using the magnetic suction component 3 to provide magnetic suction force, a frictional force is generated between the reel 2 and the supporting member 1, thereby generating a constant frictional torque to ensure the relative stability of the ribbon tension during the printing process. Without the support of a complex control algorithm, an efficient and stable printing effect can be achieved.

[0043] Specifically, as Figure 1 、 Figure 2 shown, this magnetic suction type roll seat further includes a main shaft 4, and the reel 2, the supporting member 1 and the magnetic suction component 3 are sequentially sleeved on the main shaft 4. The main shaft 4 provides stable support for the reel, the supporting member 1 and the magnetic suction component 3, so that the magnetic suction type roll seat forms a compact and stable overall structure. Fixing the main shaft 4 on the mounting plate of the thermal transfer printer can complete the installation of the magnetic suction type roll seat.

[0044] Specifically, as Figure 2 shown, a bearing 5 is provided between the reel 2 and the main shaft 4. The bearing 5 can reduce the friction between the reel 2 and the main shaft 4, make the rotation of the reel 2 smoother, and can extend the service life of the reel 2 and the main shaft 4; the bearing 5 can bear various loads generated during the rotation of the reel 2, so that the reel 2 can maintain stable rotation.

[0045] In this embodiment, as Figure 2 shown, the number of bearings 5 is multiple, and the multiple bearings 5 are distributed along the axial direction of the main shaft 4. By dispersing the load to multiple bearings 5, the load borne by each bearing 5 will be correspondingly reduced, which helps to improve the rigidity and stability of the entire main shaft 4. The support of multiple bearings 5 can reduce the vibration caused by the insufficient load-bearing capacity of a single bearing 5 and improve the smoothness of the magnetic suction type roll seat during operation.

[0046] Specifically, as Figure 2 shown, the magnetic suction component 3 includes a mounting member 31 and a magnetic suction member 32. The mounting member 31 is fixedly sleeved on the main shaft 4, the mounting member 31 is provided with a receiving groove, the other side of the supporting member 1 abuts against the mounting member 31, and the magnetic suction member 32 is sleeved on the main shaft 4 and is located in the receiving groove. The mounting member 31 is fixed on the main shaft 4, and the supporting member 1 can abut against the mounting member 31, so that the supporting member 1 can also be fixed on the main shaft 4 and will not displace along the axial direction of the main shaft 4. By providing a receiving groove in the mounting member 31 and installing the magnetic suction member 32 in the receiving groove, the installation space is saved.

[0047] Specifically, as Figure 1 、Figure 2 As shown, the supporting member 1 includes a supporting portion 11 and a fixing portion 12. The end face of the winding drum 2 can abut against the supporting portion 11, and the fixing portion 12 is snap-connected to the mounting member 31. By snap-connecting the fixing portion 12 to the mounting member 31, the supporting member 1 is prevented from generating a displacement that rotates around the axis of the main shaft 4, preventing the supporting member 1 from rotating when the winding drum 2 rotates, and thus ensuring the tension of the ribbon.

[0048] Specifically, the material of the supporting member 1 is polyethylene. Polyethylene has excellent wear resistance, which can keep the surface of the supporting member 1 flat for a long time during use and reduce the performance degradation caused by wear.

[0049] Specifically, the material of the winding drum 2 is stainless steel. Stainless steel can be adsorbed by the magnetic attracting member 32 and has high strength and stiffness.

[0050] In this embodiment, a wear-resistant coating (not shown in the figure) is provided on the end face of the winding drum 2. The wear-resistant coating can reduce wear, extend the service life of the winding drum 2, reduce the replacement frequency of the winding drum 2 caused by wear, and reduce the maintenance cost caused by wear.

[0051] In this embodiment, a wear-resistant coating (not shown in the figure) is provided on the side surface of the supporting member 1. A wear-resistant coating is provided on the side surface of the supporting member 1. The wear-resistant coating can reduce wear, extend the service life of the supporting member 1, reduce the replacement frequency of the supporting member 1 caused by wear, and reduce the maintenance cost caused by wear. Specifically, the wear-resistant coating is provided on the supporting portion 11 of the supporting member 1.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A magnetic reel seat, characterized in that: include: Supporting member (1); A reel (2), the reel (2) being arranged on one side of the supporting member (1); A magnetic attraction component (3), wherein the magnetic attraction component (3) is arranged on the other side of the supporting member (1), and the magnetic attraction component (3) is capable of adsorbing the reel (2) so that the end surface of the reel (2) is pressed against the side surface of the supporting member (1).

2. The magnetic reel holder according to claim 1, characterized in that: The magnetic reel seat also includes: The main shaft (4), the reel (2), the supporting member (1) and the magnetic attraction assembly (3) are sequentially sleeved on the main shaft (4).

3. The magnetic reel holder according to claim 2, characterized in that: A bearing (5) is provided between the reel (2) and the main shaft (4).

4. The magnetic reel holder according to claim 3, characterized in that: The number of the bearings (5) is multiple, and the multiple bearings (5) are distributed along the axial direction of the main shaft (4).

5. The magnetic reel holder according to claim 2, characterized in that: The magnetic attraction component (3) comprises: A mounting member (31), the mounting member (31) being fixedly sleeved on the main shaft (4), the mounting member (31) being provided with a receiving groove, and the other side of the supporting member (1) being in contact with the mounting member (31); A magnetic attraction member (32), wherein the magnetic attraction member (32) is sleeved on the main shaft (4) and is located in the accommodating groove.

6. The magnetic reel holder according to claim 5, characterized in that: The supporting member (1) comprises: A supporting portion (11), the end surface of the reel (2) being capable of being pressed against the supporting portion (11); A fixing portion (12), wherein the fixing portion (12) is snap-connected with the mounting member (31).

7. The magnetic reel holder according to any one of claims 1 to 6, characterized in that: The material of the supporting member (1) is polyethylene.

8. The magnetic reel holder according to any one of claims 1 to 6, characterized in that: The material of the reel (2) is stainless steel.

9. The magnetic reel holder according to any one of claims 1 to 6, characterized in that: The end surface of the reel (2) is provided with a wear-resistant coating.

10. The magnetic reel holder according to any one of claims 1 to 6, characterized in that: The side surface of the supporting member (1) is provided with a wear-resistant coating.