Printing roller structure of ultrahigh frequency intelligent card printer

Abstract

The utility model discloses a printing roller structure of an ultrahigh frequency intelligent card printer, which comprises a base disc and an inner short column fixed on the outer wall of one side of the base disc, an outer barrel shell is fixed at one end of the inner short column far away from the base disc, a main shaft is rotatably mounted at one end of the outer barrel shell, and one end of the main shaft penetrates to the outside of the outer barrel shell. A hollow printing roller is installed at one end of the surface of the main shaft, an electric heating rod is fixed to the outer wall of one side of the inner short column, and the central axis of the electric heating rod and the central axis of the hollow printing roller are collinear. According to the utility model, the ink or the ribbon can be ensured to keep proper flowability and viscosity under the condition of low working temperature, so that the problem of non-uniform transfer or printing quality reduction caused by overhigh viscosity of the ink in the printing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of printer accessories, in particular to a printing roller structure of an ultra-high frequency smart card printer. Background Art

[0002] The print roller is one of the core components in the printer. Its main function is to evenly transfer ink or ribbon to the surface of the smart card to ensure the clarity and accuracy of the printed image or text. In UHF smart card printers, these cards have tiny sizes and high precision requirements, so the design and execution of the print roller are crucial. Such print rollers are usually made of specific materials, such as rubber or silicone, which are both wear-resistant and flexible enough to adapt to the surface characteristics of the card and the operating environment of the printer. The surface usually needs special treatment, such as precise surface processing or coating, to ensure the uniformity and stability of ink transfer; for example, in a print roller structure of a smart card printer disclosed in application publication number CN107685547A, a steel shaft is passed through the center of the steel roller, radially protruding annular blocks are provided at both ends of the steel roller, the rubber layer covers the outer surface of the annular block, and the height of the annular block is set to 40%-50% of the thickness of the rubber layer. By providing radially protruding annular blocks at both ends of the steel roller, the annular blocks are used to block the rubber layer, reduce the deformation of the rubber layer being squeezed to both sides, and keep the rubber layer in a relatively straight and uniform state. However, during use, the central axis of the roller body of the technical solution does not have a heating function, and the fluidity of the ink is greatly affected by the ambient temperature. In particular, in a low temperature environment, the viscosity of the ink will increase, resulting in uneven ink transfer or poor flow. Therefore, if the print roller lacks a heating function at the central axis, it is difficult to effectively adjust the temperature of the ink. At this time, it is difficult for the ink to be uniformly transferred from the roller body surface to the smart card surface, thereby resulting in a decrease in printing quality. Utility Model Content

[0003] The purpose of the utility model is to provide a print roller structure of an ultra-high frequency smart card printer, in which a hollow print roller is arranged, and a fixed, non-rotating electric heating rod is arranged on the central axis of the hollow print roller, and a three-point inner skeleton is arranged on the outer side of the electric heating rod to contact the inner wall of the hollow print roller, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printing roller structure of an ultra-high frequency smart card printer, comprising a base plate and an inner short column fixed on the outer wall of one side of the base plate, and an outer cylinder shell is fixed to the end of the inner short column away from the base plate, a main shaft is rotatably installed at one end of the outer cylinder shell, one end of the main shaft passes through the outside of the outer cylinder shell, a hollow printing roller is installed at one end of the main shaft surface, an electric heating rod is fixed on the outer wall of one side of the inner short column, the central axis of the electric heating rod is colinear with the central axis of the hollow printing roller, a three-point inner skeleton is installed on the outer wall of the electric heating rod and passes through the outside of the outer cylinder shell, and a thermal conductive tile in contact with the inner wall of the hollow printing roller is installed on the outer wall of the three-point inner skeleton.

[0005] Preferably, a completely penetrating internal threaded hole is provided at the edge of the surface of the base plate.

[0006] Preferably, both ends of the surface of the outer cylinder shell are provided with rectangular hollow parts, and the internal chamber of the outer cylinder shell and the internal chamber of the hollow printing roller are connected to each other through the rectangular hollow parts.

[0007] Preferably, the three-point inner skeleton includes a plurality of equally spaced linear hollow grooves opened on the outer peripheral surface of the outer cylinder shell and a corrugated plate fixed on the outer wall of the electric heating rod and extending to the outside of the linear hollow grooves, and the thermal conductive tile is fixed on the top of the corrugated plate.

[0008] Preferably, three thermally conductive tiles are provided, and all three thermally conductive tiles are made of aluminum alloy, and the outer diameter of the thermally conductive tile is equal to the inner diameter of the hollow printing roller.

[0009] Preferably, a tightening ring having a common central axis with the hollow printing roller and the outer cylinder shell is installed on the outer surface of the corrugated board.

[0010] Compared with the prior art, the beneficial effect of the utility model is that the print roller structure of the ultra-high frequency smart card printer is provided with a hollow print roller and an electric heating rod and other structures that cooperate with each other. The electric heating rod heats up and transfers the heat to the hollow print roller through the three-point internal skeleton and the thermal conductive tile, thereby effectively adjusting the temperature of the surface of the hollow print roller. In a low temperature environment, this heating capacity can ensure that the ink or ribbon can maintain appropriate fluidity and viscosity under low temperature working temperature conditions, thereby avoiding the problem of uneven transfer of ink or decreased print quality due to excessive viscosity during the printing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 The three-dimensional structure of the utility model in the explosion state is shown in FIG. Figure 1 ;

[0013] Figure 3 The three-dimensional structure of the utility model in the explosion state is shown in FIG. Figure 2 ;

[0014] Figure 4 The three-dimensional structure of the utility model in the explosion state is shown in FIG. Figure 3 ;

[0015] In the figure: 1, base plate; 101, internal threaded hole; 2, main shaft; 3, hollow printing roller; 4, internal short column; 5, outer cylinder shell; 501, rectangular hollow part; 502, straight hollow groove; 6, electric heating rod; 7, three-point inner skeleton; 701, corrugated plate; 702, tightening ring; 8, thermal conductive tile. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 The utility model provides an embodiment: a printing roller structure of an ultra-high frequency smart card printer, comprising a base plate 1 and an inner short column 4 fixed on the outer wall of one side of the base plate 1, and an outer cylinder shell 5 is fixed to one end of the inner short column 4 away from the base plate 1, a main shaft 2 is rotatably mounted on one end of the outer cylinder shell 5, one end of the main shaft 2 penetrates to the outside of the outer cylinder shell 5, and a hollow printing roller 3 is mounted on one end of the surface of the main shaft 2. The cavity structure of the hollow printing roller 3 makes the printing roller lighter as a whole and has a smaller inertia, and the internal space of the cavity structure can also accommodate a heating element;

[0018] An electric heating rod 6 is fixed on the outer wall of one side of the inner short column 4, and the central axis of the electric heating rod 6 is collinear with the central axis of the hollow printing roller 3. Since the electric heating rod 6 is located on the central axis of the hollow printing roller 3 and is extended by a certain length, the heating effect of the hollow printing roller 3 can be made more uniform;

[0019] A three-point inner frame 7 penetrating to the outside of the outer cylinder shell 5 is installed on the outer wall of the electric heating rod 6, and a heat-conducting tile 8 in contact with the inner wall of the hollow printing roller 3 is installed on the outer wall of the three-point inner frame 7;

[0020] A completely penetrating internal thread hole 101 is provided at the edge of the surface of the base plate 1. The base plate 1 can be fixed to the inner wall of one side of the UHF smart card printer housing through the internal thread hole 101 and bolts to keep the inner short column 4, the outer cylinder shell 5 and the electric heating rod 6 and other components fixed;

[0021] Both ends of the surface of the outer cylinder shell 5 are provided with rectangular hollow parts 501, and the inner chamber of the outer cylinder shell 5 and the inner chamber of the hollow printing roller 3 are connected to each other through the rectangular hollow parts 501;

[0022] The three-point inner skeleton 7 also serves as a supporting medium to enhance the overall stability of the printing roller. The three-point inner skeleton 7 includes a plurality of equally spaced straight hollow grooves 502 opened on the outer peripheral surface of the outer cylinder shell 5 and a corrugated plate 701 fixed on the outer wall of the electric heating rod 6 and penetrating the outside of the straight hollow grooves 502. The thermal conductive tile 8 is fixed on the top of the corrugated plate 701. The outer surface of the corrugated plate 701 is installed with a tightening ring 702 that shares the same central axis with the hollow printing roller 3 and the outer cylinder shell 5. When the main shaft 2 and the hollow printing roller 3 are driven to rotate, the inner wall of the hollow printing roller 3 and the outer wall of the thermal conductive tile 8 are in relative friction. In this process, the heat generated by the electric heating rod 6 can be quickly transferred to the thermal conductive tile 8 and the hollow printing roller 3 through the rectangular hollow portion 501 opened on the surface of the outer cylinder shell 5.

[0023] There are three thermal conductive tiles 8, all of which are made of aluminum alloy. The outer diameter of the thermal conductive tile 8 is equal to the inner diameter of the hollow printing roller 3. The heat generated by the electric heating rod 6 will also be directly transferred to the thermal conductive tile 8 through the corrugated plate 701 and the tightening ring 702 to further increase the heating speed of the electric heating rod 6 and ensure uniform and efficient heating.

[0024] When the embodiment of the present application is in use, the staff first arranges the print roller structure in the UHF smart card printer so that the main shaft 2 is connected to the shaft motor of the UHF smart card printer to ensure that the shaft motor drives the main shaft 2 and the hollow print roller 3 to rotate. At this time, the rubber layer covering the surface of the hollow print roller 3 rotates and contacts the surface of the smart card, thereby evenly transferring the ink to the card to complete the printing work. During this process, the staff can communicate with the electric heating rod 6 through the control panel of the UHF smart card printer to facilitate the staff to turn on the electric heating rod 6 to work. The electric heating rod 6 starts to heat up and transfers the heat to the hollow print roller 3 through the three-point inner skeleton 7 and the thermal conductive tile 8, thereby effectively adjusting the temperature of the surface of the hollow print roller 3. In a low temperature environment, this heating capacity can ensure that the ink or ribbon can maintain appropriate fluidity and viscosity under low temperature working temperature conditions, thereby avoiding the problem of uneven transfer of ink or decreased printing quality due to excessive viscosity during printing.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A printing roller structure of an ultra-high frequency smart card printer, characterized in that: The invention comprises a base plate (1) and an inner short column (4) fixed on the outer wall of one side of the base plate (1), wherein an outer cylinder shell (5) is fixed to one end of the inner short column (4) away from the base plate (1), a main shaft (2) is rotatably mounted on one end of the outer cylinder shell (5), one end of the main shaft (2) penetrates to the outside of the outer cylinder shell (5), a hollow printing roller (3) is mounted on one end of the surface of the main shaft (2), an electric heating rod (6) is fixed to the outer wall of one side of the inner short column (4), the central axis of the electric heating rod (6) is colinear with the central axis of the hollow printing roller (3), a three-point inner skeleton (7) penetrating to the outside of the outer cylinder shell (5) is mounted on the outer wall of the electric heating rod (6), and a heat conductive tile (8) in contact with the inner wall of the hollow printing roller (3) is mounted on the outer wall of the three-point inner skeleton (7).

2. The printing roller structure of a UHF smart card printer according to claim 1, characterized in that: A completely penetrating internal thread hole (101) is provided at the edge of the surface of the base plate (1).

3. The printing roller structure of a UHF smart card printer according to claim 1, characterized in that: Rectangular hollow portions (501) are provided at both ends of the surface of the outer cylinder shell (5), and the internal chamber of the outer cylinder shell (5) and the internal chamber of the hollow printing roller (3) are connected to each other through the rectangular hollow portions (501).

4. The printing roller structure of a UHF smart card printer according to claim 1, characterized in that: The three-point inner frame (7) comprises a plurality of equally spaced linear hollow grooves (502) opened on the outer peripheral surface of the outer cylinder shell (5) and a corrugated plate (701) fixed on the outer wall of the electric heating rod (6) and extending to the outside of the linear hollow grooves (502), and the heat conductive tile (8) is fixed on the top of the corrugated plate (701).

5. The printing roller structure of a UHF smart card printer according to claim 1, characterized in that: Three heat-conducting tiles (8) are provided, and the three heat-conducting tiles (8) are all made of aluminum alloy. The outer diameter of the heat-conducting tile (8) is equal to the inner diameter of the hollow printing roller (3).

6. The printing roller structure of a UHF smart card printer according to claim 4, characterized in that: The outer surface of the corrugated plate (701) is provided with a tightening ring (702) which shares a central axis with the hollow printing roller (3) and the outer cylinder shell (5).

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