Printing device

Abstract

The utility model discloses a printing device, and relates to the technical field of printing. The printing device comprises a first shell, the first shell is provided with a head piece and a printing roller, and the head piece is matched with the printing roller to print a printing belt; the second shell is movably connected with the first shell, so that a cover opening or closing action can be realized between the second shell and the first shell; a reset pressing part, wherein the reset pressing part is arranged on the second shell; and the reset part is used for abutting against the reset abutting part when the cover is opened, so that the head piece is far away from the printing roller. When the cover is opened, the reset abutting part and the reset part abut against each other, so that the head piece is far away from the printing roller, an elastic piece which enables the printing head swing arm to rotate does not need to be arranged like the prior art, the number of parts is reduced, the assembly difficulty and cost are reduced, the risk of fatigue or looseness of the elastic piece is avoided, and the printing quality and the operation experience are improved.

Description

TECHNICAL FIELD

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

[0002] The existing printer is through the opening and closing cover structure linkage printing head is close to or far from the printing roller, it is provided with the cover spring at the lower shell and the cover connecting place, the cover spring is sleeved on the rotating shaft, to provide the elastic force for the cover when opening the cover, makes the cover open automatically, at the same time, the compression spring or tension spring is set up on the printing head actuating member, to make the printing head swing arm rotate by using the elastic force when opening the cover, that is, the printing head is far from the printing roller.

[0003] But, the above design needs to set up the cover spring and the compression spring or tension spring at the lower shell and the cover connecting place simultaneously, increases the assembly complexity and cost, the spring is tired or slackened long-term use, causes the spring action on the printing head actuating member possibly out of step or failure, the cover has been opened when opening the cover, but the printing head does not timely far from the printing roller or can not far from the printing roller. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model aims at providing a printing device, which solves the problems of too many parts, spring failure and out-of-step linkage of the existing opening cover linkage structure.

[0005] According to one aspect of the utility model, a printing device is provided, which comprises:

[0006] A first shell is provided with a head piece and a printing roller, and the head piece cooperates with the printing roller to print a printing tape;

[0007] A second shell is movably connected with the first shell, so that the second shell and the first shell can realize opening or closing actions;

[0008] A reset pressing part is arranged on the second shell;

[0009] A reset part is arranged on the second shell and is used to press against the reset pressing part when the cover is opened, so that the head piece is far away from the printing roller.

[0010] The printing device of the utility model, when the cover is opened, the reset pressing part and the reset part press against each other, so that the head piece is far away from the printing roller. Unlike the prior art, no elastic member is needed to make the printing head swing arm rotate, which reduces the number of parts, reduces the assembly difficulty and cost, avoids the risk of fatigue or slackening of the elastic member, and improves the printing quality and operation experience.

[0011] In some embodiments, a drive unit is also included, wherein the second housing is provided with a drive pressing part, the drive unit being used to press against the drive pressing part when the cover is closed, so as to bring the head piece closer to the printing roller.

[0012] In some embodiments, the first housing is also rotatably connected to a printhead swing arm, and the reset part is disposed on the printhead swing arm. When the reset part presses against the reset pressing part, it drives the printhead swing arm to rotate in the forward direction. When the printhead swing arm rotates in the forward direction, it drives the printhead away from the print roller.

[0013] In some embodiments, the driving unit is disposed on the printhead swing arm, and when the driving unit abuts against the driving pressing unit, it drives the printhead swing arm to rotate in the opposite direction, and when the printhead swing arm rotates in the opposite direction, it drives the printhead plate to move closer to the print roller.

[0014] In some embodiments, the printhead swing arm is provided with a printhead bracket for mounting the printhead plate. When the printhead swing arm rotates in the forward direction, it moves the printhead bracket away from the print roller, so that the printhead plate is away from the print roller. Alternatively, when the printhead swing arm rotates in the reverse direction, it moves the printhead bracket closer to the print roller, so that the printhead plate is closer to the print roller.

[0015] In some embodiments, the printhead holder is provided with a receiving groove that houses a temperature sensor that contacts the printhead to detect the temperature of the printhead.

[0016] In some embodiments, a first elastic element is provided between the printhead swing arm and the temperature sensor, the first elastic element being used to ensure that the temperature sensor is in close contact with the printhead plate.

[0017] In some embodiments, a pressure block is further provided between the first elastic element and the temperature sensor, the pressure block being used to prevent the temperature sensor from falling out of the receiving groove.

[0018] In some embodiments, the printhead swing arm is rotatably connected to the printhead support, and a second elastic member is provided between the printhead swing arm and the printhead support. The second elastic member is used to cause the printhead to press against the printhead when the printhead approaches the print roller.

[0019] In some embodiments, the printhead swing arm is connected to the printhead support via a pivot, and the printhead swing arm is connected to the first housing via the pivot.

[0020] Compared with the prior art, the printing device of this utility model, when the cover is opened, uses the resetting pressing part to press against the resetting part to move the print head away from the printing roller. Unlike the prior art, there is no need to set up an elastic element to rotate the print head swing arm, which reduces the number of parts, reduces assembly difficulty and cost, and avoids the risk of fatigue or loosening of the elastic element, thus improving printing quality and user experience. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the printing device according to an embodiment of the present invention when the cover is opened, from a first-view perspective.

[0022] Figure 2 This is a structural schematic diagram of the printing device according to an embodiment of the present invention when the cover is opened, from a second perspective.

[0023] Figure 3 This is a schematic diagram of the printing device according to one embodiment of the present invention with the second housing removed.

[0024] Figure 4 This is a schematic diagram of the structure of the second housing of the printing device according to one embodiment of the present invention;

[0025] Figure 5 This is a structural schematic diagram of the printing device according to an embodiment of the present invention, with the first frame removed, from a first perspective.

[0026] Figure 6 This is a structural schematic diagram of the printing device according to an embodiment of the present invention, with the first frame removed, from a second perspective.

[0027] Figure 7 This is a first-view structural schematic diagram of the printhead assembly of a printing device according to an embodiment of the present invention.

[0028] Figure 8 This is a second-view structural schematic diagram of the printhead assembly of a printing device according to an embodiment of the present invention.

[0029] Figure 9 This is a cross-sectional view of the print head assembly of a printing device according to one embodiment of the present invention.

[0030] Reference numerals: Housing 100, First Housing 110, First Outer Housing 111, First Frame 112, Receiving Part 1121, Second Housing 120, Second Outer Housing 121, Second Frame 122, Rotary Shaft Mounting Part 1221, First Rotary Shaft 130, Opening Spring 131, Belt Roll Mounting Part 140, Media Positioning Shaft 141, Printing Channel 150, Discharge Port 151, Printing Part 200, Printhead Assembly 210, Head Plate 211, Printhead Support 212, Receiving Slot 2121, Mounting Protrusion 2122, Printhead Swing Arm 213, Mounting Protrusion 2131, Second Rotary Shaft 214, Temperature Sensor 215, First Elastic Member 216, Second Elastic Member 217, Pressure Block 218, Printing Roller 220, Roller Shaft 221, Roller Body 222, Drive Part 300, Drive Pressing Part 400, Reset Part 500, Reset Pressing Part 600. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] This invention provides a printing device, such as... Figure 1 As shown, the printing device includes a housing 100 and a printing unit 200.

[0033] like Figure 1 and Figure 3 As shown, the housing 100 includes a first housing 110 and a second housing 120. The second housing 120 is movably connected to the first housing 110 so that the second housing 120 and the first housing 110 can perform opening or closing actions. In this embodiment, the second housing 120 and the first housing 110 are rotatably connected. Specifically, the first end of the second housing 120 is rotatably connected to the first end of the first housing 110 through a first rotating shaft 130. When opening the lid, the second end of the second housing 120 (which is opposite to the first end of the second housing 120) rotates away from the first housing 110 about the first rotating shaft 130 as the rotation axis to realize the opening action. When closing the lid, the second end of the second housing 120 rotates towards the first housing 110 about the first rotating shaft 130 as the rotation axis to realize the closing action.

[0034] like Figures 1-6As shown, the first housing 110 includes a first outer shell 111 and a first frame 112, with the first frame 112 disposed within the first outer shell 111. The second housing 120 includes a second outer shell 121 and a second frame 122, with the second frame 122 disposed within the second outer shell 121. The first end of the first frame 112 has a receiving portion 1121, which is a groove. The first end of the second frame 122 has a pivot mounting portion 1221, which extends from the second frame 122 along a line perpendicular to the second frame 111. The shaft extends in the direction of 22, and then bends and extends in a direction parallel to the second frame 122, with its extension direction being the same as the orientation of the first end of the first frame 112, making the pivot mounting part 1221 approximately L-shaped. The first end of the pivot mounting part 1221 is connected to the second frame 122, and the second end of the pivot mounting part 1221 is rotatably connected to the receiving part 1121 of the first frame 112 through the first pivot 130. When the cover is closed, the pivot mounting part 1221 can be completely accommodated in the receiving part 1121. Inside, the axis of the first rotating shaft 130 is parallel to the first frame 112 and the second frame 122, respectively. A cover-opening spring 131 is fitted onto the first rotating shaft 130. The cover-opening spring 131 is a torsion spring. The first end of the cover-opening spring 131 presses against the first frame 112, and the second end of the cover-opening spring 131 presses against the second frame 122. When the cover is closed, the second frame 122 rotates about the first rotating shaft 130 as its axis, and the second end of the second frame 122 rotates towards the direction closer to the first frame 112, gradually compressing the cover-opening spring 131. The opening spring 131 applies elastic force to the first frame 112 and the second frame 122 respectively. The second frame 122 and the first frame 112 need to overcome the elastic force applied by the opening spring 131 to complete the closing action. When opening the lid, the squeezed opening spring 131 applies elastic force to the first frame 112 and the second frame 122 respectively. Under the action of the elastic force of the opening spring 131, the second end of the second frame 122 rotates in a direction away from the first frame 112, thereby automatically completing the opening action.

[0035] like Figures 1-3 As shown, a tape roll mounting part 140 is provided inside the first frame 112. The tape roll mounting part 140 is generally a cylindrical groove. A media positioning shaft 141 is provided inside the tape roll mounting part 140. The axis of the media positioning shaft 141 is perpendicular to the first frame 112. The tape roll mounting part 140 can be used to accommodate a printing media roll (not shown in the figure). The printing media roll is formed by winding the printing tape. When the printing media roll is loaded in the tape roll mounting part 140, the core of the printing media roll is sleeved with the media positioning shaft 141 to prevent the printing media roll from shifting.

[0036] like Figures 1-2As shown, a printing channel 150 is provided inside the first frame 112. The first end of the printing channel 150 is connected to the tape roll mounting part 140. The second end of the printing channel 150 passes through the first outer shell 111 in a direction perpendicular to the axis of the media positioning shaft 141 to form a discharge port 151. The first end of the printing tape in the tape roll mounting part 140 passes through the printing channel 150, and after printing is completed at the printing part 200 provided in the printing channel 150, it is finally discharged from the discharge port 151.

[0037] like Figure 1 and Figure 2 As shown, the printing unit 200 includes a printhead assembly 210 and a print roller 220. The printhead assembly 210 and the print roller 220 are located on both sides of the printing channel 150, respectively. The printhead assembly 210 is closer to the receiving part 1121 than the print roller 220. The printhead assembly 210 works with the print roller 220 to hold the printing tape passing through the printing channel 150 and perform printing. The print roller 220 rotates to transport the printing tape, so that the printed tape is discharged from the discharge port 151.

[0038] like Figures 5-9 As shown, the printhead assembly 210 includes a printhead plate 211, a printhead support 212, a printhead swing arm 213, a second rotating shaft 214, a temperature sensor 215, a first elastic element 216, and a second elastic element 217.

[0039] like Figures 5-9 As shown, the printhead 211 is mounted on the printhead support 212 and is opposite to the print roller 220. The printhead support 212 is located at the first end of the printhead swing arm 213 near the print roller 220 and is rotatably connected to the printhead swing arm 213. The printhead swing arm 213 is rotatably connected to the first frame 112 of the first housing 110. In this embodiment, the printhead swing arm 213 and the printhead support 212 can be connected by a pivot shaft, and the printhead swing arm 213 and the first frame 112 of the first housing 110 can also be connected by a pivot shaft. A pivot connection is established, specifically a second pivot 214. The printhead swing arm 213 and the printhead support 212 are rotatably connected to the first frame 112 via the same second pivot 214. Both the printhead swing arm 213 and the printhead support 212 can rotate around the second pivot 214. The axis of the second pivot 214 is parallel to the axis of the media positioning shaft 141. The printhead support 212 is located between the print roller 220 and the second pivot 214. The printhead swing arm 213 rotates in the positive direction around the second pivot 214 (i.e., the printhead swing arm 213 is in...). Figure 5 When the print head is rotated clockwise, it moves the print head support 212 away from the print roller 220, so that the print head plate 211 on the print head support 212 is away from the print roller 220. Conversely, when the print head swing arm 213 rotates in the opposite direction (i.e., the print head swing arm 213 rotates clockwise), it moves the print head support 212 away from the print roller 220. Figure 5When the printhead is rotated counterclockwise, it moves the printhead bracket 212 closer to the print roller 220, so that the printhead plate 211 on the printhead bracket 212 is close to the print roller 220.

[0040] like Figure 9 As shown, the printhead support 212 is provided with a receiving groove 2121, which extends through the printhead support 212 and is connected to the side of the printhead 211 facing away from the print roller 220. The temperature sensor 215 is located in the receiving groove 2121 and is in contact with the part of the side of the printhead 211 facing away from the print roller 220 to detect the temperature of the printhead 211.

[0041] like Figure 8 and Figure 9 As shown, a first elastic element 216 is disposed between the printhead swing arm 213 and the temperature sensor 215. The first elastic element 216 is used to ensure that the temperature sensor 215 and the side of the printhead plate 211 facing away from the print roller 220 are in close contact. The first elastic element 216 can be a torsion spring. The first elastic element 216 is sleeved on the second rotating shaft 214 or on the mounting post (not shown in the figure) of the printhead swing arm 213. The first end of the first elastic element 216 abuts against the printhead swing arm 213, and the second end of the first elastic element 216 abuts against the temperature sensor 215. Under the elastic force of the first elastic element 216, the device 215 makes close contact with the side of the print head 211 facing away from the printing roller 220, so that the temperature sensor 215 can detect the temperature of the print head 211 more accurately. In other embodiments, the first elastic element 216 can be a spring, and the print head swing arm 213 has a mounting post for mounting the spring. The first end of the spring is mounted on the mounting post, and the second end of the spring presses against the print head swing arm 213. The elastic force of the spring can also make the temperature sensor 215 make close contact with the side of the print head 211 facing away from the printing roller 220.

[0042] like Figure 9As shown, a pressure block 218 is also provided between the first elastic element 216 and the temperature sensor 215. The cross-section of the pressure block 218 can be larger than the cross-section of the receiving groove 2121, so that the pressure block 218 can completely cover the receiving groove 2121. Under the action of the elastic force of the first elastic element 216, the pressure block 218 fits tightly against the printhead bracket 212 to seal the receiving groove 2121. The pressure block 218 can prevent the temperature sensor 215 from falling out of the receiving groove 2121, and at the same time, in order to make the temperature in the receiving groove 2121... The sensor 215 is in close contact with the side of the print head 211 facing away from the printing roller 220. The pressure block 218 can be adhesive tape, which is pasted on the print head support 212 to seal the receiving groove 2121. Since the adhesive tape is flexible, the first elastic member 216 presses the adhesive tape against the temperature sensor 215. The temperature sensor 215 can be indirectly subjected to the elastic force of the first elastic member 216. Under the action of the elastic force of the first elastic member 216, the temperature sensor 215 is in close contact with the side of the print head 211 facing away from the printing roller 220.

[0043] like Figure 8 and Figure 9 As shown, the second elastic element 217 is disposed between the printhead swing arm 213 and the printhead support 212. The second elastic element 217 is a spring. The printhead swing arm 213 has a mounting protrusion 2131, and the printhead support 212 has a mounting protrusion 2122. The first end of the second elastic element 217 is mounted on the mounting protrusion 2131 of the printhead swing arm 213, and the second end of the second elastic element 217 is mounted on the mounting protrusion 2131 of the printhead swing arm 213. When the printhead swing arm 213 rotates in the opposite direction, it drives the printhead support 212 to approach the print roller 220. The second elastic element 217 further moves the printhead 211 toward the print roller 220 and presses against the print roller 220 to clamp the printing tape.

[0044] like Figure 5 and Figure 6 As shown, the printing roller 220 includes a roller shaft 221 and a roller body 222. The roller shaft 221 is mounted on the first frame 112 and can rotate around the axis of the roller shaft 221. The axis of the roller shaft 221 is parallel to the axis of the media 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 head plate 211 presses against the roller body 222 of the printing roller 220, and the printing tape is clamped between the head plate 211 and the roller body 222 of the printing roller 220. The head plate 211 heats up to develop the printing tape, and the roller body 222 of the printing roller 220 rotates to transport the printing tape, so that the printed tape that has been printed is discharged from the discharge port 151.

[0045] like Figures 3-9As shown, the printing device also includes a drive unit 300, which is located at the second end of the print head swing arm 213 away from the print roller 220. The drive unit 300 extends from the print head swing arm 213 along the axial direction of the media positioning shaft 141 toward the second frame 122 and into the receiving portion 1121. The second housing 120 is provided with a drive pressing part 400, which is further located at the bend of the L-shaped rotating shaft mounting part 1221 in the second frame 122. When the cover is closed, the first end of the rotating shaft mounting part 1221 enters into the receiving portion 1121. The driving abutment part 400 on part 1221 abuts against the driving part 300 on the print head swing arm 213, pushing the driving part 300 to move in the receiving part 1121 toward the first end of the first frame 112 (or the first end of the second frame 122), thereby driving the print head swing arm 213 to rotate in the opposite direction. When the print head swing arm 213 rotates in the opposite direction, it drives the head piece 211 on the print head support 212 to approach the print roller 220, and under the elastic force of the second elastic member 217, the head piece 211 abuts against the roller body 222 of the print roller 220 to clamp the printing tape.

[0046] like Figures 3-9 As shown, the printing device also includes a reset part 500, which is disposed at the second end of the print head swing arm 213 away from the print roller 220. The reset part 500 extends from the print head swing arm 213 along the axial direction of the media positioning shaft 141 toward the second frame 122 and extends into the receiving part 1121. There are two reset parts 500, which are respectively located on both sides of the drive part 300. The second housing 120 is provided with a reset pressing part 600, and there are two reset pressing parts 600. The reset pressing part 600 is further disposed at the second end of the L-shaped rotating shaft mounting part 1221 of the second frame 122 and extends away from the second frame 122 in a direction perpendicular to the second frame 122. When the cover is opened, the first end of the rotating shaft mounting part 1221 moves out of the receiving part 1121, and the rotating shaft... The reset pressing part 600 on the mounting part 1221 presses against the reset part 500 on the printhead swing arm 213, pushing the drive part 300 to move in the receiving part 1121 away from the first end of the first frame 112 (or the first end of the second frame 122), thereby driving the printhead swing arm 213 to rotate in the forward direction. When the printhead swing arm 213 rotates in the forward direction, it drives the head plate 211 on the printhead support 212 away from the print roller 220, so that the head plate 211 is away from the roller body 222 of the print roller 220. Therefore, there is no need to set up an elastic element to rotate the printhead swing arm 213, reducing the number of parts, reducing assembly difficulty and cost, and avoiding the risk of fatigue or loosening of the elastic element. It ensures that the printhead swing arm 213 rotates when the second housing 120 is opened, improving printing quality and operating experience.

[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A printing device, characterized in that, include: A first housing, comprising a head plate and a printing roller, wherein the head plate cooperates with the printing roller to print on a printing belt; The second housing is movably connected to the first housing so that the second housing and the first housing can perform opening or closing actions; A reset pressing part is disposed in the second housing; A reset part is provided, which is used to press against the reset pressing part when the cover is opened, so as to move the head away from the printing roller.

2. The printing apparatus according to claim 1, characterized in that, It also includes a drive unit, and the second housing is provided with a drive pressing part, which is used to press against the drive pressing part when the cover is closed, so as to bring the head piece closer to the printing roller.

3. The printing apparatus according to claim 2, characterized in that, The first housing is also rotatably connected to a printhead swing arm. The reset part is disposed on the printhead swing arm. When the reset part and the reset pressing part press against each other, the printhead swing arm is driven to rotate in the forward direction. When the printhead swing arm rotates in the forward direction, it drives the printhead away from the print roller.

4. The printing apparatus according to claim 3, characterized in that, The drive unit is disposed on the printhead swing arm. When the drive unit presses against the drive pressing unit, it drives the printhead swing arm to rotate in the opposite direction. When the printhead swing arm rotates in the opposite direction, it drives the printhead plate to move closer to the print roller.

5. The printing apparatus according to claim 4, characterized in that, The printhead swing arm is provided with a printhead bracket, which is used to mount the printhead. When the printhead swing arm rotates in the forward direction, it drives the printhead bracket away from the print roller, so that the printhead is away from the print roller. Or when the printhead swing arm rotates in the reverse direction, it drives the printhead bracket closer to the print roller, so that the printhead is closer to the print roller.

6. The printing apparatus according to claim 5, characterized in that, The printhead holder is provided with a receiving groove, which houses a temperature sensor. The temperature sensor is in contact with the printhead to detect the temperature of the printhead.

7. The printing apparatus according to claim 6, characterized in that, A first elastic element is provided between the printhead swing arm and the temperature sensor, and the first elastic element is used to make the temperature sensor and the printhead plate in close contact.

8. The printing apparatus according to claim 7, characterized in that, A pressure block is also provided between the first elastic element and the temperature sensor, the pressure block being used to prevent the temperature sensor from falling out of the receiving groove.

9. The printing apparatus according to claim 5, characterized in that, The printhead swing arm is rotatably connected to the printhead support, and a second elastic element is provided between the printhead swing arm and the printhead support. The second elastic element is used to make the printhead plate press against the print roller when the printhead plate approaches the print roller.

10. The printing apparatus according to claim 9, characterized in that, The printhead swing arm is connected to the printhead support via a pivot, and the printhead swing arm is connected to the first housing via the pivot.

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