Thermal printer capable of improving stripping smoothness

Abstract

The thermal printer comprises a base, a cover body, a rubber roller, a thermosensitive sheet and a stripper, the stripping roller comprises a central shaft, a hollow pipe barrel and two self-lubricating copper sleeves, two sides of a cover plate are provided with mounting plates, the mounting plate on each side is provided with a mounting hole, the hollow pipe barrel is located between the mounting plates on the two sides, and the hollow pipe barrel is located between the mounting plates on the two sides. The center shaft penetrates through the mounting holes in the two sides and the hollow pipe barrel, the two self-lubricating copper sleeves are located at the two axial ends of the center shaft respectively, the self-lubricating copper sleeves are adjacent to the outer wall of the axial end of the center shaft and the inner wall of the axial end of the hollow pipe barrel, rubber coating is arranged on the peripheral wall of the hollow pipe barrel, and the rubber coating and the rubber roller extend in the paper width direction. And the rubber coating is in interference rolling fit with the rubber roller. The self-lubricating copper sleeves at the two ends are used for rotating and lubricating the hollow pipe barrel, so that the hollow pipe barrel rotates more smoothly, and the rubber coating is in interference fit with the rubber roller, so that the clamping force to backing paper can be kept, the backing paper can be stably fed, and then label stripping is stably achieved.

Description

Technical Field

[0001] The utility model relates to the field of thermal label printing, in particular to a thermal printer capable of improving peeling smoothness. Background Art

[0002] With the rapid growth of e-commerce and express delivery businesses, express delivery orders used to be filled out manually. Now, label printers based on thermal imaging principles are used to print fonts at the corresponding positions on the express delivery orders, or directly print self-adhesive express delivery labels, which are then separated and affixed to the goods, thereby effectively improving express delivery efficiency.

[0003] The existing label peeling mechanism separates the base paper from the label by pulling the base paper in the opposite direction at a large angle. Therefore, in addition to maintaining the clamping force of the base paper, the smoothness of the roller rotation needs to be improved to ensure smooth peeling. Utility Model Content

[0004] The utility model aims to provide a thermal printer with improved peeling smoothness.

[0005] In order to achieve the purpose of the utility model, the utility model provides a thermal printer with improved peeling smoothness, comprising a base, a cover body, a rubber roller, a thermal sheet and a peeler, the thermal sheet is arranged on the cover body, the rubber roller is rotatably arranged on the base, a paper bin is arranged on the base, the cover body covers the paper bin and is hinged to the base, a paper outlet is formed between the cover body and the base, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper bin; the peeler comprises a baffle, a cover plate and a peeling roller, the baffle is provided with a bottom paper passing groove on the front side, the peeling roller is located in the bottom paper passing groove and is rotatably arranged on the cover plate, the cover plate is hinged to the baffle and covers the front side of the bottom paper passing groove, and a bottom paper is provided on the top of the bottom paper passing groove The stripping roller comprises a central shaft, a hollow tube and two self-lubricating copper sleeves. The cover plate is provided with mounting plates on both sides of the bottom paper passing slot in the paper width direction. The mounting plates on each side are provided with mounting holes. The hollow tube is located between the mounting plates on both sides. The central shaft passes through the mounting holes and the hollow tube on both sides. The two self-lubricating copper sleeves are respectively located at the two axial ends of the central shaft. The self-lubricating copper sleeves are adjacent to the outer wall of the axial end of the central shaft and the inner wall of the axial end of the hollow tube. The outer peripheral wall of the hollow tube is provided with a rubber bag. The stripping knife is located at the paper outlet. The rubber bag and the rubber roller both extend in the paper width direction. The rubber bag and the rubber roller have an interference rolling fit.

[0006] A further solution is that a fixing hole is provided on the axial end surface of the axial end portion of the central shaft, a fixing screw is fixedly connected to the fixing hole, and a head of the fixing screw is limitedly matched with the mounting plate.

[0007] A further solution is that the mounting plate is provided with an avoidance step at the outer edge of the mounting hole, and the head of the fixing screw is located in the avoidance step.

[0008] A further solution is that the cover plate is provided with a rotating shaft below the bottom paper passing slot, the rotating shaft extends along the paper width direction, and the cover plate is hinged to the baffle plate through the rotating shaft; the cover plate is provided with two clamping parts above the bottom paper passing slot, and the two clamping parts are respectively located at the two ends in the paper width direction, and the baffle plate is provided with two card slots above the bottom paper passing slot, and the two card slots are respectively located at the two ends in the paper width direction, and the clamping parts and the card slots can be detachably engaged.

[0009] A further solution is that the cover plate is provided with a clamping shaft above the bottom paper passing slot, and the two clamping parts are respectively located at two axial ends of the clamping shaft.

[0010] A further solution is that two slide grooves are provided below the bottom paper slot on the baffle, and the slide grooves extend in the vertical direction. The two slide grooves are located on both sides of the paper width direction. The rotating shaft passes through the two slide grooves, and the axial end of the rotating shaft can move along the slide grooves; the card slot includes a horizontal slot and a vertical slot that are connected to each other. The horizontal slot has an opening at the outer end, and the card part can be inserted into the vertical slot from the opening.

[0011] A further solution is that the cover plate is provided with a plurality of guide ribs below the hollow tube, the plurality of guide ribs are arranged along the paper width direction, and the guide ribs are provided with guide slopes, which are inclined in the vertical direction.

[0012] The beneficial effects of the present invention are as follows: a central shaft passes through the hollow tube, and self-lubricating copper sleeves at both ends provide rotational lubrication for the hollow tube, making the rotation of the hollow tube smoother. Furthermore, the rubber coating creates an interference fit with the rubber roller, thereby maintaining a strong grip on the base paper, ensuring stable feeding of the base paper and enabling stable label peeling. Furthermore, the fixing screw is fixedly connected to the central shaft, providing stable rotation and clamping for the hollow tube. Furthermore, the movement of the rotating shaft allows the clamping portion to separate and engage with the clamping slot, facilitating the replacement of label printing paper. Furthermore, the guiding slopes of the multiple guide ribs guide the base paper, allowing it to be smoothly discharged from the base paper outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of an embodiment of the thermal printer of the present utility model.

[0014] Figure 2 This is a structural diagram of an embodiment of the thermal printer of the present invention when the cover is opened.

[0015] Figure 3 It is a structural diagram of a stripper in an embodiment of a thermal printer of the present utility model.

[0016] Figure 4This is a structural diagram of an embodiment of the thermal printer of the present invention when the cover is opened.

[0017] Figure 5 This is an exploded view of a peeling roller in an embodiment of a thermal printer of the present invention.

[0018] Figure 6 It is a cross-sectional view of the peeling roller of an embodiment of the thermal printer of the present invention.

[0019] Figure 7 This is a schematic diagram of the bottom paper feeding of an embodiment of the thermal printer of the present utility model.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 7 The thermal printer includes a base 12, a cover 11, a rubber roller 121, a thermal sheet 111 and a stripper 2. The thermal sheet 111 is arranged on the cover 11, and the rubber roller 121 is rotatably arranged on the base 12. The rubber roller 121 is driven by a motor and a transmission gear to achieve rotation. A paper bin 14 is provided on the base 12. The cover 11 covers the paper bin 14 and is hinged to the base 12. A paper outlet 13 is formed between the cover 11 and the base 12. The thermal sheet 111 and the rubber roller 121 are opposite to each other and form a paper feeding channel. The paper feeding channel is connected between the paper outlet 13 and the paper bin 14. The stripper 2 is arranged on the outside of the paper outlet 13.

[0022] The stripper 2 includes a baffle 21, a cover plate 22 and a stripping roller 23. The baffle 21 is provided with a bottom paper slot 211 on the front side. The stripping roller 23 is located in the bottom paper slot 211 and is rotatably provided on the cover plate 22. The cover plate 22 is hinged to the baffle 21 and covers the front side of the bottom paper slot 211. The bottom paper slot 211 is provided with a bottom paper inlet 201 at the top, a stripping knife 203 is provided above the bottom paper inlet 201, and the bottom paper slot 211 is provided with a bottom paper outlet 202 at the bottom.

[0023] The peeling roller 23 includes a central shaft 234, a hollow tube 231 and two self-lubricating copper sleeves 235. The cover plate 22 is provided with mounting plates 221 on both sides of the bottom paper slot 211 based on the paper width direction Y. The mounting plate 221 on each side is provided with a mounting hole 224. The hollow tube 231 is located between the mounting plates 221 on both sides. The central shaft 234 passes through the mounting holes 224 on both sides and the through hole 232 of the hollow tube 231. The two self-lubricating copper sleeves 235 are respectively located at the two axial ends of the central shaft 234. The self-lubricating copper sleeves 235 are adjacent to the outer wall of the axial end of the central shaft 234 and the inner wall of the axial end of the hollow tube 231, so that the hollow tube 231 can rotate smoothly relative to the central shaft 234. The outer peripheral wall of the hollow tube 231 is provided with a rubber bag 233, and the rubber bag 233 is cylindrical and annular and wrapped around the outer periphery of the hollow tube 231.

[0024] The axial end face of the central shaft 234 is provided with a fixing hole 236, which is fixedly engaged with a fixing screw 236. The head of the fixing screw 236 engages with the mounting plate 221. The mounting plate 221 has a clearance step on the outer edge of the mounting hole 224, and the head of the fixing screw 236 is located within the clearance step. The stripping blade 203 is located at the paper outlet 13. The rubber coating 233 and the rubber roller 121 both extend along the paper width direction Y, and the rubber coating 233 and the rubber roller 121 have an interference rolling fit.

[0025] The cover plate 22 is provided with a rotating shaft 24 below the bottom paper slot 211, and the rotating shaft 24 extends along the paper width direction Y. The cover plate 22 is hinged to the baffle 21 through the rotating shaft 24. The baffle 21 is provided with two slide grooves 217 below the bottom paper slot 211. The slide grooves 217 extend in the vertical direction. The two slide grooves 217 are respectively located on both sides of the paper width direction Y. The rotating shaft 24 passes through the two slide grooves 217, and the axial end of the rotating shaft 24 can move along the slide groove 217.

[0026] The cover plate 22 is provided with a card shaft 25 above the bottom paper passing slot 211, and the two axial ends of the card shaft 25 are respectively provided with card parts 251. The two card parts 251 are located above the cover plate 22 above the bottom paper passing slot 211, and the two card parts 251 are respectively located at the two ends of the paper width direction Y. The baffle 21 is provided with two card slots 212 above the bottom paper passing slot 211, and the two card slots 212 are respectively located at the two ends of the paper width direction Y. The card slot 212 includes a horizontal slot 213 and a vertical slot 214 that are connected to each other. The horizontal slot 213 has an opening at the outer end, and the card part 251 can be inserted into the vertical slot 214 from the opening. The card part 251 and the card slot 212 can be detachably engaged.

[0027] The cover plate 22 is provided with a plurality of guide ribs 222 below the hollow tube 231 . The plurality of guide ribs 222 are arranged along the paper width direction Y. The guide ribs 222 are provided with guide slopes 223 , which are inclined in the vertical direction.

[0028] Reference Figure 7 The label printing paper 3 is output from the paper bin through the paper feeding channel and is clamped and fed by the thermal film 111 and the rubber roller 121. As the rubber roller 121 feeds the paper and the thermal film 111 forms a thermal image, the label printing paper 3 is output from the paper outlet 13. The bottom paper 32 is deflected at a large angle after passing through the peeling knife 203 and is then input into the bottom paper inlet 201. The label 31 is then separated from the bottom paper 32. The bottom paper 32 is then clamped by the rubber roller 121 and the rubber wrap 233 and driven by the rubber roller 121 and the rubber wrap 233 to feed the bottom paper 32 downward and finally output from the bottom paper outlet 202.

[0029] As can be seen from the above, the central shaft is used to pass through the hollow tube, and the self-lubricating copper sleeves at both ends are used to lubricate the hollow tube, making the rotation of the hollow tube smoother. In addition, the rubber coating and the rubber roller have an interference fit, so the clamping force on the base paper can be maintained, so that the base paper can be fed stably, and then the label can be peeled off stably.

Claims

1. A thermal printer for improving paper peeling smoothness, comprising a base, a cover, a rubber roller, a thermal sheet, and a peeler, wherein the thermal sheet is mounted on the cover, the rubber roller is rotatably mounted on the base, a paper bin is mounted on the base, the cover covers the paper bin and is hingedly connected to the base, a paper outlet is formed between the cover and the base, the thermal sheet and the rubber roller face each other and form a paper feed path, and the paper feed path communicates between the paper outlet and the paper bin; The stripper includes a baffle, a cover plate, and a stripping roller. The baffle is provided with a bottom paper slot on the front side. The stripping roller is located in the bottom paper slot and is rotatably provided on the cover plate. The cover plate is hinged to the baffle and covers the front side of the bottom paper slot. The bottom paper slot is provided with a bottom paper inlet on the top. A stripping knife is provided above the bottom paper inlet. The bottom paper slot is provided with a bottom paper outlet on the bottom side. Its characteristics are: The peeling roller includes a central shaft, a hollow tube and two self-lubricating copper sleeves. The cover plate is provided with mounting plates on both sides of the bottom paper passing slot based on the paper width direction. The mounting plates on each side are provided with mounting holes. The hollow tube is located between the mounting plates on both sides. The central shaft passes through the mounting holes and the hollow tube on both sides. The two self-lubricating copper sleeves are respectively located at the two axial ends of the central shaft. The self-lubricating copper sleeves are adjacent to the outer wall of the axial end of the central shaft and the inner wall of the axial end of the hollow tube. The outer peripheral wall of the hollow tube is provided with rubber. The stripping knife is located at the paper outlet, the rubber bag and the rubber roller both extend along the paper width direction, and the rubber bag and the rubber roller are in interference rolling fit.

2. The thermal printer according to claim 1, wherein: The axial end surface of the axial end portion of the central shaft is provided with a fixing hole, a fixing screw is fixedly connected to the fixing hole, and the head of the fixing screw is limitedly matched with the mounting plate.

3. The thermal printer according to claim 2, wherein: The mounting plate is provided with an avoidance step on the outer edge of the mounting hole, and the head of the fixing screw is located in the avoidance step.

4. The thermal printer according to claim 1, wherein: The cover plate is provided with a rotating shaft below the bottom paper passing slot, the rotating shaft extending along the paper width direction, and the cover plate is hinged to the baffle through the rotating shaft; The cover plate is provided with two clamping parts above the bottom paper passing slot, and the two clamping parts are respectively located at the two ends of the paper width direction; the baffle is provided with two clamping slots above the bottom paper passing slot, and the two clamping slots are respectively located at the two ends of the paper width direction; the clamping parts are detachably engaged with the clamping slots.

5. The thermal printer according to claim 4, wherein: The cover plate is provided with a clamping shaft above the bottom paper passing slot, and two clamping parts are respectively located at two axial ends of the clamping shaft.

6. The thermal printer according to claim 4, wherein: The baffle is provided with two slide grooves below the bottom paper passing groove, the slide grooves extending in the vertical direction, the two slide grooves being respectively located on both sides in the paper width direction, the rotating shaft passing through the two slide grooves, and the axial end portion of the rotating shaft can move along the slide grooves; The clamping slot includes a transverse slot and a vertical slot that are connected to each other. The transverse slot has an opening at an outer end, and the clamping portion can be clamped into the vertical slot from the opening.

7. The thermal printer according to any one of claims 1 to 6, characterized in that: The cover plate is provided with a plurality of guide ribs below the hollow tube, the plurality of guide ribs are arranged along the paper width direction, the guide ribs are provided with guide slopes, and the guide slopes are inclined to the vertical direction.

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