Printing device

Abstract

The utility model discloses a printing device, and relates to the technical field of printing. The printing device comprises a shell, the shell is provided with a printing channel, and the printing channel is used for conveying a printing belt; and the bandwidth limiting part can move, and when the bandwidth limiting part moves to the printing channel, the bandwidth limiting part can stretch across the printing channel, so that the printing belt is prevented from being separated from the printing channel. According to the printing device, the bandwidth limiting part can stretch across the printing channel when moving to the printing channel, so that the printing channel can be stably limited within a preset width range in the printing tape conveying process, the printing tape is prevented from being separated from the printing channel, and the printing quality and the reliability of the printing device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing technical field especially relates to a printing device. BACKGROUND

[0002] In the existing printer design, the printing tape may swing or deviate in the width direction during the conveying process due to various reasons (such as the vibration of the printer, the elastic deformation of the printing tape, etc.). Such deviation may cause the printing tape to jam, the printing quality to decrease, and even damage the mechanical parts inside the printer. In addition, in the traditional printer design, the tape width limiting device is usually only arranged on one side of the printing channel, which cannot effectively prevent the swing of the printing tape in the width direction, thereby failing to completely avoid the problem of the printing tape deviating from the printing channel. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a printing device to solve the problem that the printing tape in the existing printer easily swings or deviates in the width direction during the conveying process.

[0004] According to one aspect of the utility model, a printing device is provided, comprising:

[0005] A housing is provided with a printing channel for conveying a printing tape.

[0006] A tape width limiting part is movable, and when it moves to the printing channel, it can span the printing channel to prevent the printing tape from deviating from the printing channel.

[0007] The printing device of the utility model ensures that the printing channel can be stably limited within a predetermined width range during the conveying of the printing tape, thereby avoiding the deviation of the printing tape from the printing channel and improving the printing quality and the reliability of the printing device.

[0008] In some embodiments, the tape width limiting part comprises a boss, the printing channel comprises oppositely arranged first and second wall parts, and the boss can span the first and second wall parts when it moves to the printing channel to prevent the printing tape from deviating from the printing channel.

[0009] In some embodiments, the first and second wall parts are each provided with a groove, and the boss can be respectively embedded in the two grooves when it moves to the printing channel, so that the boss can span the first and second wall parts.

[0010] In some embodiments, the two grooves are opposite to each other, and the boss is provided with two first guide slopes which are opposite to each other and are used for guiding the boss to be embedded into the two grooves respectively.

[0011] In some embodiments, the first guide slope has a first end and a second end, and when the boss is embedded into the groove, the first end of the first guide slope is embedded into the groove earlier than the second end of the first guide slope, and the interval between the first ends of the two first guide slopes is smaller than the interval between the second ends of the two first guide slopes.

[0012] In some embodiments, the two grooves are provided with second guide slopes which are used for guiding the boss to be embedded into the two grooves respectively.

[0013] In some embodiments, the second guide slope has a first end and a second end, and when the boss is embedded into the groove, the first end of the second guide slope passes through the boss earlier than the second end of the second guide slope, and the interval between the first ends of the two second guide slopes is larger than the interval between the second ends of the two second guide slopes.

[0014] In some embodiments, the shell comprises:

[0015] a first shell, and the printing channel is arranged in the first shell;

[0016] a second shell, and the second shell is movably connected with the first shell, so that the second shell and the first shell can realize the opening or closing action;

[0017] the bandwidth limiting part is arranged in the second shell, and the second shell can drive the bandwidth limiting part to move.

[0018] In some embodiments, when the second shell is closed, the second shell can drive the bandwidth limiting part to move to the printing channel, so that the bandwidth limiting part can span the printing channel.

[0019] In some embodiments, when the second shell is opened, the second shell can drive the bandwidth limiting part to move away from the printing channel, so that the printing channel is exposed.

[0020] Compared with the prior art, the printing device of the utility model, through the bandwidth limiting part which can span the printing channel when moving to the printing channel, ensures that the printing channel can be stably limited in the predetermined width range during conveying the printing belt, thereby avoiding the printing belt from being separated from the printing channel, and improving the printing quality and the reliability of the printing device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Structure diagram of the first visual angle when the printing device of an embodiment of the present application is opened;

[0022] Figure 2 Structure diagram of the second visual angle when the printing device of an embodiment of the present application is opened;

[0023] Figure 3 Structure diagram of the third visual angle when the printing device of an embodiment of the present application is opened;

[0024] Figure 4 Structure diagram of the fourth visual angle when the printing device of an embodiment of the present application is opened;

[0025] Figure 5 Structure diagram of the fourth visual angle when the printing device of an embodiment of the present application is opened; Figure 4 Enlarged view of part A in the middle;

[0026] Figure 6 Structure diagram of the printing device of an embodiment of the present application without the second shell;

[0027] Figure 7 Structure diagram of the second shell of the printing device of an embodiment of the present application;

[0028] Figure 8 Structure diagram of the printing device of an embodiment of the present application without the second shell;

[0029] BRIEF DESCRIPTION OF THE DRAWINGS: shell 100, first shell 110, first outer shell 111, first frame 112, accommodating portion 1121, second shell 120, second outer shell 121, second frame 122, pivot mounting portion 1221, first pivot 130, cover opening spring 131, tape roll mounting portion 140, medium positioning shaft 141, printing channel 150, discharge port 151, first wall portion 152, second wall portion 153, groove 154, second guide inclined surface 1541, paper cutting portion 160, printing portion 200, print head 210, printing roller 220, roller shaft 221, roller body 222, tape width limiting portion 300, boss 310, first guide inclined surface 311. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] An embodiment of the present application provides a printing device, as shown in the drawings, which comprises a shell 100, a printing portion 200 and a tape width limiting portion 300. Figure 1

[0032] Figures 1-4 and Figures 6-7 ​​As shown, the shell 100 comprises a first shell 110 and a second shell 120, the second shell 120 is movably connected with the first shell 110, so that the second shell 120 and the first shell 110 can realize the opening or closing action, in the embodiment, the second shell 120 is rotatably connected with the first shell 110, specifically, the first end of the second shell 120 is rotatably connected with the first end of the first shell 110 through a first rotating shaft 130, when opening, the second shell 120 rotates around the first rotating shaft 130, the second end of the second shell 120 (which is opposite to the first end of the second shell 120) rotates towards the direction away from the first shell 110, so as to realize the opening action; when closing, the second shell 120 rotates around the first rotating shaft 130, the second end of the second shell 120 rotates towards the direction close to the first shell 110, so as to realize the closing action.

[0033] As Figures 1-4 and Figures 6-7As shown, the first shell 110 includes a first outer shell 111 and a first frame 112, the first frame 112 is arranged in the first outer shell 111, the second shell 120 includes a second outer shell 121 and a second frame 122, the second frame 122 is arranged in the second outer shell 121, the first end of the first frame 112 has a receiving portion 1121, the receiving portion 1121 is a groove, the first end of the second frame 122 has a rotating shaft mounting portion 1221, the rotating shaft mounting portion 1221 extends from the second frame 122 in a direction perpendicular to the second frame 122, and then bends and extends in a direction parallel to the second frame 122, and the extending direction is the same as the direction of the first end of the first frame 112, so that the rotating shaft mounting portion 1221 is approximately L-shaped, the first end of the rotating shaft mounting portion 1221 is connected with the second frame 122, the second end of the rotating shaft mounting portion 1221 is rotatably connected with the receiving portion 1121 of the first frame 112 through the first rotating shaft 130, and when the cover is closed, the rotating shaft mounting portion 1221 can be completely accommodated in the receiving portion 1121, the axis of the first rotating shaft 130 is parallel to the first frame 112 and the second frame 122, the first rotating shaft 130 is sleeved with an opening cover spring 131, the opening cover spring 131 is a torsion spring, the first end of the opening cover spring 131 abuts against the first frame 112, and the second end of the opening cover spring 131 abuts against the second frame 122, when the cover is closed, the second end of the second frame 122 rotates towards the direction close to the first frame 112 with the first rotating shaft 130 as the rotating shaft, the opening cover spring 131 is gradually pressed, and the opening cover spring 131 applies elastic force to the first frame 112 and the second frame 122 respectively, and the second frame 122 needs to overcome the elastic force applied by the opening cover spring 131 to complete the closing action; when the cover is opened, the pressed opening cover spring 131 applies elastic force to the first frame 112 and the second frame 122 respectively, and the second end of the second frame 122 rotates towards the direction away from the first frame 112 under the action of the elastic force of the opening cover spring 131, thereby automatically completing the opening action.

[0034] As shown in Figures 1-3 and Figure 6 , a tape roll mounting portion 140 is arranged in the first frame 112, the tape roll mounting portion 140 is approximately a cylindrical groove, a medium positioning shaft 141 is arranged in the tape roll mounting portion 140, the axis of the medium positioning shaft 141 is perpendicular to the first frame 112, the tape roll mounting portion 140 can be used to accommodate a printing medium roll (not shown in the figure), the printing medium roll is formed by winding a printing tape, when the printing medium roll is loaded in the tape roll mounting portion 140, the core of the printing medium roll is sleeved with the medium positioning shaft 141 to prevent the printing medium roll from shifting, and the width direction of the printing tape is parallel to the axis of the medium positioning shaft 141.

[0035] As shown in Figures 1-2 and Figures 5-6As shown in

[0036] As shown in Figure 1 and Figure 3 The printing part 200 includes a print head 210 and a print roller 220, the print head 210 and the print roller 220 are respectively located on both sides of the printing channel 150, the print head 210 is closer to the containing part 1121 than the print roller 220, the print head 210 cooperates with the print roller 220 to clamp the printing tape passing through the printing channel 150 and print, and the print roller 220 rotates to convey the printing tape, so that the printed printing tape is discharged from the discharge port 151.

[0037] As shown in Figure 1 and Figure 3 The print roller 220 includes a roller shaft 221 and a roller body 222, the roller shaft 221 is installed on the first frame 112 and can rotate around the axis line of the roller shaft 221, the axis line of the roller shaft 221 is parallel to the axis line of the medium positioning shaft 141, the roller body 222 is sleeved on the roller shaft 221 and can rotate with the roller shaft 221, during printing, the print head 210 and the roller body 222 of the print roller 220 are pressed, the printing tape is clamped between the print head 210 and the roller body 222 of the print roller 220, the print head 210 heats to make the printing tape surface show the printing mark, and the roller body 222 of the print roller 220 rotates to convey the printing tape, so that the printed printing tape is discharged from the discharge port 151.

[0038] As shown in Figures 1-2 and Figure 6As shown, the first housing 110 is provided with a paper cutting portion 160, which is located at the discharge port 151 and can be fixedly connected with the first frame 112 and / or the first housing 111. The paper cutting portion 160 is parallel to the discharge port 151 so that the printing tape can be smoothly discharged from the discharge port 151. In this embodiment, the paper cutting portion 160 is a metal paper cutter. After the printing tape is discharged from the discharge port 151, the user can fold the printing tape towards the paper cutting portion 160 at the paper cutting portion 160 so as to cut / tear the printing tape at the paper cutting portion 160. In other embodiments, the paper cutting portion 160 can be a paper cutter or a more sharp housing edge or other component capable of tearing or cutting the printing tape.

[0039] As shown in Figure 1 , Figures 5-6 and Figure 8 , the printing channel 150 includes oppositely arranged first and second wall portions 152 and 153, which have a gap therebetween. The first and second wall portions 152 and 153 are connected with the tape roll mounting portion 140 at their first ends so that the gap between the first and second wall portions 152 and 153 is in communication with the printing channel 150. The second ends of the first and second wall portions 152 and 153 form the discharge port 151 through the first housing 111 in a direction perpendicular to the axis of the medium positioning shaft 141. The gap between the first and second wall portions 152 and 153 is used to transport the printing tape. The first and second wall portions 152 and 153 are perpendicular to the first housing 110, and the width direction of the printing tape is parallel to the first and second wall portions 152 and 153. The first and second wall portions 152 and 153 pass through the first housing 110 in a direction towards the second housing 120. Since the first and second wall portions 152 and 153 are not blocked in the direction of passing through the first housing 110 (i.e. the direction of the first and second wall portions 152 and 153 towards the second housing 120), the printing tape transported in the gap between the first and second wall portions 152 and 153 can swing or deviate in its width direction, and even seriously fall out of the printing channel 150. The present embodiment solves the above problem by the movable tape width limiting portion 300.

[0040] As shown in Figures 1-2 , Figure 5 and Figures 7-8As shown, the bandwidth limiting part 300 is arranged on the side of the second frame 122 opposite to the first frame 112, and the second frame 120 can drive the bandwidth limiting part 300 to move when the cover is closed or opened; when the cover is closed, the second frame 120 can drive the bandwidth limiting part 300 to move to the printing channel 150, and the bandwidth limiting part 300 can span the printing channel 150, and the printing belt in the printing channel 150 is limited in the width direction by the bandwidth limiting part 300, ensuring that the printing channel 150 can be stably limited within the predetermined width range during the conveying of the printing belt, thereby preventing the printing belt from escaping from the printing channel 150, improving the printing quality and the reliability of the printing device.

[0041] As shown in Figures 1-2 , Figure 5 and Figures 7-8 , the bandwidth limiting part 300 includes a boss 310, which is extended from the side of the second frame 122 opposite to the first frame 112 in a direction perpendicular to the second frame 122, so that the boss 310 protrudes towards the first frame 112 on the side of the second frame 122 opposite to the first frame 112, and the protruding direction is perpendicular to the second frame 122, and the boss 310 can span the first wall part 152 and the second wall part 153 when moving to the printing channel 150, and the printing belt in the gap between the first wall part 152 and the second wall part 153 is completely limited in the width direction by the bandwidth limiting part 300, ensuring that the printing channel 150 can be stably limited within the predetermined width range during the conveying of the printing belt, and no matter how the printing belt swings, it can prevent the printing belt from escaping from the gap between the first wall part 152 and the second wall part 153 of the printing channel 150 in the width direction of the printing belt, thereby improving the printing quality and the reliability of the printing device.

[0042] As shown in Figure 5 and Figure 8As shown, both the first wall portion 152 and the second wall portion 153 are provided with grooves 154. Both grooves 154 are formed by the first frame 112 recessed inwards in a direction perpendicular to the first frame 112. The two grooves 154 are opposite to each other. When the boss 310 moves to the printing channel 150, the boss 310 can span across the first wall portion 152 and the second wall portion 153 and be embedded in the two grooves 154 respectively. That is, the portion of the boss 310 located in the first wall portion 152 is embedded in the groove 154 provided in the first wall portion 152, and the portion of the boss 310 located in the second wall portion 153 is embedded in the groove 154 provided in the second wall portion 153. In the groove 154; when the distance between the first wall portion 152 and the second wall portion 153 in the width direction of the printing belt is greater than the width of the printing belt, and the distance between the boss 310 spanning the first wall portion 152 and the second wall portion 153 and the printing belt is large, the printing belt may swing or deviate in its width direction. By providing the groove 154 in the first wall portion 152 and the second wall portion 153, the distance between the boss 310 and the printing belt can be reduced, thereby reducing the amplitude of the printing belt in the gap between the first wall portion 152 and the second wall portion 153 of the printing channel 150 swinging or deviating in its width direction.

[0043] like Figure 5 and Figures 7-8 As shown, the boss 310 is provided with two back-to-back first guide slopes 311. Each first guide slope 311 has a first end and a second end. When the boss 310 is inserted into the groove 154, the first end of the first guide slope 311 is inserted into the groove 154 before the second end. The distance between the first ends of the two first guide slopes 311 is less than the distance between the second ends of the two first guide slopes 311. The boss 310 has a plane between the first ends of the two first guide slopes 311. The distance between the first ends of the two first guide slopes 311 is not less than the distance between the first wall portion 152 and... The spacing of the second wall portion 153 ensures that the portion of the boss 310 facing the printing belt between the first wall portion 152 and the second wall portion 153 is flat; the two first guide slopes 311 provided on the boss 310 can guide the boss 310 to be embedded into the two grooves 154 respectively, that is, the portion of the boss 310 located in the first wall portion 152 is guided by one first guide slope 311 to be embedded into the groove 154 provided in the first wall portion 152, and the portion of the boss 310 located in the second wall portion 153 is guided by the other first guide slope 311 to be embedded into the groove 154 provided in the second wall portion 153.

[0044] like Figure 5 and Figure 8As shown, the two grooves 154 are each provided with a second guide slope 1541 having a first end and a second end, when the boss 310 is embedded in the groove 154, the first end of the second guide slope 1541 passes the boss 310 earlier than the second end of the second guide slope 1541, that is, when the boss 310 is embedded in the groove 154, the boss 310 first passes the first end of the second guide slope 1541 and then passes the second end of the second guide slope 1541, the interval between the first ends of the two second guide slopes 1541 is greater than the interval between the second ends of the two second guide slopes 1541, and the interval between the second ends of the two second guide slopes 1541 is not less than the interval between the second ends of the two first guide slopes 311, so as to ensure that the boss 310 is smoothly embedded in the groove 154; the two grooves 154 are respectively provided with the second guide slope 1541, so as to guide the boss 310 to be embedded in the two grooves 154 respectively, that is, the part of the boss 310 located at the first wall portion 152 is guided by one second guide slope 1541 to be embedded in the groove 154 provided in the first wall portion 152, and the part of the boss 310 located at the second wall portion 153 is guided by the other second guide slope 1541 to be embedded in the groove 154 provided in the second wall portion 153.

[0045] As shown, Figures 1-2 When the cover is opened, the second shell 120 can drive the bandwidth limiting portion 300 to move away from the printing channel 150, that is, the part of the boss 310 located at the first wall portion 152 moves away from the groove 154 provided in the first wall portion 152, and the part of the boss 310 located at the second wall portion 153 moves away from the groove 154 provided in the second wall portion 153, after the boss 310 is completely separated from the two grooves 154, the printing channel 150 is exposed relative to one side of the first shell 110, so that the user can conveniently install and replace the printing tape.

[0046] It should be noted that the number of bosses 310 can be set according to requirements, when the number of bosses 310 is multiple, the multiple bosses 310 can be arranged on the second shell 120 and distributed along the extension direction of the printing channel 150, correspondingly, the number of grooves 154 provided in the first wall portion 152 and the second wall portion 153 is matched with the number of bosses 310, and the multiple grooves 154 are also distributed along the extension direction of the printing channel 150.

[0047] The above only describes some embodiments of the present application. Those skilled in the art can make some modifications and improvements without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A printing device, characterized by, The application relates to a printer comprising: a housing provided with a printing channel for conveying a printing tape; a tape width limiting part capable of moving and capable of crossing the printing channel when moving to the printing channel to prevent the printing tape from being separated from the printing channel.

2. The printing device according to claim 1, characterized by The tape width limiting part comprises a protrusion, the printing channel comprises oppositely arranged first and second wall parts, and the protrusion is capable of crossing the first and second wall parts when moving to the printing channel to prevent the printing tape from being separated from the printing channel.

3. The printing device of claim 2, wherein, The first and second wall parts are each provided with a groove, and the protrusion is capable of being respectively embedded in the two grooves when moving to the printing channel, so that the protrusion can cross the first and second wall parts.

4. The printing device according to claim 3, characterized in that, The two grooves are opposite to each other, and the protrusion is provided with two oppositely directed first guide slopes for guiding the protrusion to be respectively embedded in the two grooves.

5. The printing device of claim 4, wherein, The first guide slope has a first end and a second end, and when the protrusion is embedded in the groove, the first end of the first guide slope is embedded in the groove earlier than the second end of the first guide slope, and the interval between the first ends of the two first guide slopes is smaller than the interval between the second ends of the two first guide slopes.

6. The printing device of claim 3, wherein, The two grooves are each provided with a second guide slope, and the two second guide slopes are used for guiding the protrusion to be respectively embedded in the two grooves.

7. The printing device of claim 6, wherein, The second guide slope has a first end and a second end, and when the protrusion is embedded in the groove, the first end of the second guide slope passes through the protrusion earlier than the second end of the second guide slope, and the interval between the first ends of the two second guide slopes is larger than the interval between the second ends of the two second guide slopes.

8. The printing device according to any one of claims 1 to 7, characterized in that, The housing comprises: a first housing, wherein the printing channel is arranged in the first housing; a second housing, wherein the second housing is movably connected with the first housing, so that the second housing and the first housing can be opened or closed; the tape width limiting part is arranged in the second housing, and the second housing can drive the tape width limiting part to move.

9. The printing device of claim 8, wherein, When the second housing is closed, the second housing can drive the tape width limiting part to move to the printing channel, so that the tape width limiting part can cross the printing channel.

10. The printing device of claim 8, wherein, When the second housing is opened, the second housing can drive the tape width limiting part to move away from the printing channel, so that the printing channel is exposed.

Images