A paper stand device compatible with a chip size and a thermal printer

Abstract

The application provides a paper frame device compatible with the size of a tube core and a thermal printer, comprising two paper frame blocks, a first spring and a sliding block, the paper frame block is provided with a receiving protrusion column, the outer periphery of the receiving protrusion column is provided with a first receiving peripheral wall, the paper frame block is provided with a ring groove at the outer periphery of the first receiving peripheral wall, the sliding block is provided with a sliding hole, the outer periphery of the sliding block is provided with a second receiving peripheral wall, the receiving protrusion column passes through the sliding hole, by arranging the paper frame device in a paper bin, the paper frame device has a sliding block which can move in the paper width direction, in a first receiving state, the sliding block is retracted into the ring groove, the second receiving peripheral wall is retracted into the ring groove, and then the first receiving peripheral wall is used for receiving a tube core with a smaller diameter, in a second receiving state, the sliding block is extended towards a paper clamping position, and the second receiving peripheral wall is used for receiving a tube core with a larger diameter, so that the support for tube cores with different diameters and sizes can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thermal printing, and in particular to a paper frame device compatible with tube core size and a thermal printer. BACKGROUND

[0002] With the popularization and application of thermal printers, thermal printers are used not only in bank ATMs, supermarket cash desks, catering industry and e-commerce delivery, but also in thermal transfer printers using carbon ribbon thermal transfer printing principle and thermal printers using thermal paper thermal imaging. In the e-commerce and express industry, the rapid growth of printing has higher requirements for the stability and convenience of thermal printers.

[0003] The thermal printer is generally provided with a base, a cover, a rubber roller and a thermal sheet. The printing paper enters the position between the rubber roller and the thermal sheet, and the image and text are imaged through the heating of the thermal sheet.

[0004] The printing paper is generally wound in the form of a paper roll outside the tube core, and the thermal printer is erected by the paper roll frame. The printing paper roll can rotate on the paper roll frame and realize the conveying of the printing paper. Since different printing papers have different widths, it is necessary to design corresponding structures to conveniently adapt to paper frames of different tube core sizes to improve the adaptability of the printing machine to paper rolls. SUMMARY

[0005] The first object of the present application is to provide a paper frame device compatible with tube core size.

[0006] The second object of the present application is to provide a thermal printer having the above-mentioned paper frame device.

[0007] In order to achieve the first object of the present application, the present application provides a paper frame device compatible with tube core size, comprising two paper frame blocks arranged along the paper width direction, a paper clamping position is arranged between the two paper frame blocks, an end surface of the paper frame block facing the paper clamping position is provided with a receiving protruding column, the receiving protruding column extends along the paper width direction towards the paper clamping position, a first receiving peripheral wall is arranged on the outer periphery of the receiving protruding column, a ring groove is arranged on the outer periphery of the first receiving peripheral wall of the paper frame block, and the ring groove has an opening facing the paper clamping position; the paper frame device further comprises two first springs and two sliding blocks, one first spring is arranged in one ring groove along the paper width direction, the sliding block extends along the paper width direction, a sliding hole extending along the paper width direction is arranged in the sliding block, a second receiving peripheral wall is arranged on the outer periphery of the sliding block, the receiving protruding column passes through the sliding hole, and one sliding block is movably arranged at one ring groove along the paper width direction, the first spring is connected between the sliding block and the paper frame block, and the first spring applies an elastic force to the sliding block towards the paper clamping position; in the first receiving state, the sliding block is retracted towards the ring groove, the second receiving peripheral wall is located in the ring groove, and the first receiving peripheral wall is used for receiving the tube core; in the second receiving state, the sliding block extends towards the paper clamping position, and the second receiving peripheral wall is used for receiving the tube core.

[0008] Further, the ring groove is provided with a barrier wall outside the paper clamping position in the paper width direction, and the first spring is connected between the sliding block and the barrier wall.

[0009] Further, the barrier wall is provided with a clamping groove, the sliding block is provided with a clamping column extending in the paper width direction, the end of the clamping column is provided with a clamping part, the clamping column is movably arranged through the clamping groove, and the clamping part is located outside the clamping groove and clamped with the clamping groove.

[0010] Further, the barrier wall is provided with a plurality of clamping grooves in the circumferential direction, and the sliding block is provided with a plurality of clamping columns in the circumferential direction.

[0011] Further, the paper rack device further comprises a centering module, the centering module comprises two racks, a center gear and a second spring, one paper rack block is connected with one rack, the two racks extend in the paper width direction, the two racks are respectively engaged on the two sides of the center gear in the radial direction, and the second spring is connected with one of the racks and applies a centering elastic force to the rack.

[0012] Further, the paper rack block is provided with a hand buckle groove and a limiting groove in sequence on the front side of the receiving protruding column based on the paper length direction, the hand buckle groove has an upper opening upward, and the limiting groove extends in the paper width direction and has a lower opening downward.

[0013] Further, the paper rack block is provided with a limiting protruding column above the limiting groove, the limiting protruding column extends inwardly in the paper width direction, and the limiting protruding column and the limiting groove have a paper passing groove therebetween, and the paper passing groove is communicated with the paper clamping position.

[0014] Further, the paper rack device further comprises a locking block, the paper rack block is provided with a mounting groove in the vertical direction, the bottom of the mounting groove is provided with a through groove penetratingly arranged in the vertical direction, the upper end of the locking block is provided with an operation part, the lower end of the locking block is provided with a locking part, the locking block is movably arranged in the mounting groove, and the locking part passes through the through groove.

[0015] Further, the locking part is provided with a stop straight surface and a sliding inclined surface, the stop straight surface is perpendicular to the paper width direction, the stop straight surface and the sliding inclined surface form an acute angle therebetween, and the sliding inclined surface is located outside the stop straight surface.

[0016] In order to realize the second object of the present application, the present application provides a thermal printer, comprising a base, a cover, a rubber roller, a thermal sheet and a paper rack device, one of the rubber roller and the thermal sheet is arranged on the base, the other of the rubber roller and the thermal sheet is arranged on the cover, the base is provided with a paper bin, and the thermal sheet and the rubber roller are opposite to each other; the paper rack device is the paper rack device according to the above-mentioned solution; and the paper rack device is arranged in the paper bin.

[0017] The beneficial effects of the present application are that by setting the paper frame device in the paper bin, the paper frame device has a slider movable in the paper width direction, in the first receiving state, the slider is retracted into the ring groove, the second receiving peripheral wall is retracted into the ring groove, and then the first receiving peripheral wall is used to receive the tube core with a smaller diameter, in the second receiving state, the slider is extended towards the paper clamping position, and the second receiving peripheral wall is used to receive the tube core with a larger diameter, so that the support of the roll core with different diameter sizes can be realized, in addition, the setting of the stop wall provides stable support force for the spring, and the limiting cooperation of the clamping column and the clamping groove is used, so that the slider can be stably and not separated from sliding, further, by arranging the centering module, the two paper frame blocks are moved to the center of the paper clamping position, and the position of the paper frame block can be locked by cooperating with the locking of the locking block, and then the hand knob slot and the limiting slot located on the front side are used, so that when the hand knob slot is manually pulled, the paper frame block can be more uniformly stressed and moved more smoothly, and the paper passing slot formed by the limiting convex column is used to limit the paper feeding of the printing paper, so that the paper feeding is more stably input to the thermal sensitive sheet, and the imaging quality can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural diagram of an embodiment of the thermal sensitive printer of the present application.

[0019] Figure 2 is a structural diagram of an embodiment of the thermal sensitive printer of the present application when the cover is opened.

[0020] Figure 3 is a structural diagram of the base of an embodiment of the thermal sensitive printer of the present application.

[0021] Figure 4 is a structural diagram of an embodiment of the paper frame device of the present application.

[0022] Figure 5 is an exploded view of an embodiment of the paper frame device of the present application.

[0023] Figure 6 is an exploded view of an embodiment of the paper frame device of the present application from another perspective.

[0024] Figure 7 is a sectional view of an embodiment of the paper frame device of the present application in the locked state.

[0025] Figure 8 is Figure 7 is an enlarged view at A.

[0026] Figure 9 is a partial sectional view of an embodiment of the paper frame device of the present application in the unlocked state.

[0027] Figure 10 is a sectional view of an embodiment of the paper frame device of the present application in the first receiving state.

[0028] Figure 11is a sectional view of the paper frame device embodiment of the present application in the second receiving state.

[0029] The present application is further described below in conjunction with the drawings and embodiments. DETAILED DESCRIPTION

[0030] Reference Figures 1 to 11 The thermal printer 1 comprises a base 11, a cover 11, a rubber roller 111, a thermal sheet 121 and a paper frame device 2, the rubber roller 111 is arranged on the base 11, the thermal sheet 121 is arranged on the cover 11, the base 11 is provided with a paper bin 13, the thermal sheet 121 and the rubber roller 111 are opposite and form a paper passing channel, and the paper frame device 2 is arranged in the paper bin 13.

[0031] The paper frame device 2 comprises two paper frame blocks 21 arranged along a paper width direction Y, a paper clamping position 20 is arranged between the two paper frame blocks 21, an end surface 211 of the paper frame block 21 towards the paper clamping position 20 is provided with a receiving protruding column 213, the receiving protruding column 213 can be circular or square, the receiving protruding column 213 extends towards the paper clamping position 20 along the paper width direction Y, a first receiving peripheral wall 214 is arranged on the outer periphery of the receiving protruding column 213, a ring groove 212 is arranged on the paper frame block 21 outside the first receiving peripheral wall 214, the ring groove 212 has an opening towards the paper clamping position 20, a stop wall 224 is arranged on the outer side of the ring groove 212 relative to the paper clamping position 20 along the paper width direction Y, and a plurality of clamping grooves 223 are arranged on the stop wall 224 along the circumferential direction.

[0032] The paper frame device 2 further comprises two first springs 26 and two sliding blocks 25, one first spring 26 is arranged in one ring groove 212 along the paper width direction Y, the sliding block 25 extends along the paper width direction Y, a sliding hole 251 extending along the paper width direction Y is arranged in the sliding block 25, the sliding block and the sliding hole can be circular or square, of course, the shape of the sliding block and the sliding hole needs to match the shape of the ring groove and the receiving protruding column, a second receiving peripheral wall 252 is arranged on the outer periphery of the sliding block 25, the receiving protruding column 213 passes through the sliding hole 251, one sliding block 25 is movably arranged at one ring groove 212 along the paper width direction Y, the first spring 26 is connected between the sliding block 25 and the paper frame block 21, specifically, the first spring 26 is connected between the sliding block 25 and the stop wall 224, and the first spring 26 applies an elastic force to the sliding block 25 towards the paper clamping position 20.

[0033] The sliding block 25 is provided with a plurality of clamping columns 253 extending along the paper width direction Y, the end of the clamping column 253 is provided with a clamping part, the clamping column 253 movably passes through the clamping groove 223, the clamping part is located on the outer side of the clamping groove 223 and clamped with the clamping groove 223, so as to avoid the disengagement of the sliding block 25.

[0034] The paper frame device 2 further comprises a centering module 24, the centering module 24 comprises two racks 241, a center gear 242 and a second spring 244, one paper frame block 21 is connected with one rack 241, the two racks 241 extend along the paper width direction Y, the two racks 241 are respectively engaged on the two sides in the radial direction of the center gear 242, and the second spring 244 is connected with one of the racks 241 and applies a centering elastic force to the rack 241.

[0035] The paper frame block 21 is sequentially provided with a hand buckle groove 215 and a limiting groove 218 on the front side based on the paper length direction X of the bearing convex column 213, the hand buckle groove 215 has an upper opening upward, the limiting groove 218 extends along the paper width direction Y, and the limiting groove 218 has a lower opening downward. The paper frame block 21 is provided with a limiting convex column 216 above the limiting groove 218, the limiting convex column 216 extends inwardly along the paper width direction Y, and the limiting convex column 216 and the limiting groove 218 have a paper passing groove 217 therebetween, and the paper passing groove 217 is communicated with the paper clamping position 20.

[0036] The paper frame device 2 further comprises a locking block 23, the paper frame block 21 is provided with a mounting groove 219 in the vertical direction, the bottom of the mounting groove 219 is provided with a through groove 222 penetratingly arranged in the vertical direction, the upper end of the locking block 23 is provided with an operation part 231, the lower end of the locking block 23 is provided with a locking part 232, the locking block 23 is movably installed in the mounting groove 219, and the locking part 232 penetrates through the through groove 222. The locking part 232 is provided with a stopper flat surface and a sliding inclined surface, the stopper flat surface is perpendicular to the paper width direction Y, the stopper flat surface and the sliding inclined surface form an acute angle therebetween, and the sliding inclined surface is located on the outer side of the stopper flat surface.

[0037] The operation part 231 is located on the inward end face of the locking block 23, the outward end face of the locking block 23 is provided with a clamping block 233 and a convex column 234, the clamping block 233 is located on the upper end face, the convex column 234 is located in the middle part, the bottom wall of the mounting groove 219 is provided with a sliding groove 220 penetratingly arranged, the sliding groove 220 extends in the vertical direction, the clamping block 233 penetrates through the sliding groove 220 and is limitedly matched with the sliding groove 220, the middle part of the sliding groove 220 is provided with a convex part 221, and the convex part 221 is used for closely matching with the convex column 234, which can be used for fixing the position of the locking block 23.

[0038] Referring to Figures 8-9 And Figure 3, the base 11 is provided with two moving grooves 112 at the bottom of the paper bin 13, the moving grooves 112 extend along the paper width direction Y and are arranged in line, the bottom wall of one of the moving grooves 112 is provided with a sawtooth 113, the base 11 is provided with a limiting protrusion 114 at the front side of the moving grooves 112 based on the paper length direction X, the limiting protrusion 114 extends along the paper width direction Y. When the paper frame device 2 is arranged in the paper bin 13, one paper frame block 21 is movably arranged in the moving groove 112, a limiting groove 218 is connected with the limiting protrusion 114, the limiting groove 218 can slide along the limiting protrusion 114, a paper passing groove 217 is formed between the limiting protrusion 114 and the limiting protrusion 216, the lock portion 232 is detachably clamped with the sawtooth 113 through the through groove 222, and the paper frame block 21 and the lock portion 232 move outwardly, and the sliding cooperation of the sliding inclined surface and the sawtooth 113.

[0039] Referring to Figure 10 In the first receiving state, the sliding block 25 is retracted into the ring groove 212, the second receiving peripheral wall 252 is located in the ring groove 212, and the first receiving peripheral wall 214 is exposed, and the first receiving peripheral wall 214 is used for receiving the pipe core, and since the diameter of the receiving protrusion 213 is small, the first receiving peripheral wall 214 is used for receiving the pipe core 102 with a smaller diameter.

[0040] Referring to Figure 11 In the second receiving state, the sliding block 25 is extended to the paper clamping position 20, the sliding block 25 shields the first receiving peripheral wall 214, and the second receiving peripheral wall 252 is exposed, and since the diameter of the sliding block 25 is large, the second receiving peripheral wall 252 is used for receiving the pipe core 101 with a larger diameter.

[0041] Of course, in addition to the embodiment, the same principle is applied to the paper frame device, and the above-mentioned paper frame device can also be applied to another model or type of thermal printer, such as being arranged on the base in the thermal sheet, and the rubber roller is rotatably arranged on the cover, and the thermal printer using the paper frame device of the present application can also achieve the purpose of the present application. In addition, in the embodiment, the paper length direction X and the paper width direction Y are both arranged along the horizontal direction and perpendicular to each other, and in addition to the embodiment, the actual placement of the printer can be adjusted accordingly.

[0042] As can be seen from the above, by arranging the paper frame device in the paper bin, the paper frame device has a sliding block that can move in the paper width direction, in the first receiving state, the sliding block is retracted into the ring groove, the second receiving peripheral wall is retracted into the ring groove, and then the first receiving peripheral wall is used for receiving the pipe core with a smaller diameter, in the second receiving state, the sliding block is extended to the paper clamping position, and the second receiving peripheral wall is used for receiving the pipe core with a larger diameter, so that the support of the pipe core with different diameters can be realized.

Claims

1. A paper frame device compatible with die size, comprising two paper frame blocks arranged along a paper width direction, and a paper clamping position provided between the two paper frame blocks, characterized in that: an end surface of the paper frame block towards the paper clamping position is provided with a receiving protrusion extending along the paper width direction towards the paper clamping position, an outer periphery of the receiving protrusion is provided with a first receiving peripheral wall, and an outer periphery of the first receiving peripheral wall is provided with a ring groove, the ring groove having an open end towards the paper clamping position; the paper frame device further comprises two first springs and two sliders, one of the first springs being arranged in one of the ring grooves along the paper width direction, the slider extending along the paper width direction, a sliding hole extending along the paper width direction being provided through the slider, an outer periphery of the slider being provided with a second receiving peripheral wall, the receiving protrusion passing through the sliding hole, one of the sliders being movably arranged at one of the ring grooves along the paper width direction, the first spring being connected between the slider and the paper frame block, and the first spring applying an elastic force to the slider towards the paper clamping position; in a first receiving state, the slider is retracted towards the ring groove, the second receiving peripheral wall is located in the ring groove, and the first receiving peripheral wall is used for receiving a die; and in a second receiving state, the slider is extended towards the paper clamping position, and the second receiving peripheral wall is used for receiving a die. 2.The paper frame device according to claim 1, characterized in that: an outer side of the ring groove relative to the paper clamping position along the paper width direction is provided with a stop wall, and the first spring is connected between the slider and the stop wall. 3.The paper frame device according to claim 2, characterized in that: the stop wall is provided with a clamping groove, the slider is provided with a clamping column extending along the paper width direction, an end portion of the clamping column is provided with a clamping portion, the clamping column movably passes through the clamping groove, and the clamping portion is located at an outer side of the clamping groove and is clamped with the clamping groove. 4.The paper frame device according to claim 3, characterized in that: a plurality of clamping grooves are circumferentially provided on the stop wall, and a plurality of clamping columns are circumferentially provided on the slider. 5.The paper frame device according to claim 1, characterized in that: the paper frame device further comprises a centering module, the centering module comprising two racks, a center gear and a second spring, one of the paper frame blocks being connected with one of the racks, the two racks extending along the paper width direction, the two racks being respectively engaged on two sides of the center gear in the radial direction, and the second spring being connected with one of the racks and applying a centering elastic force to the rack. 6.The paper frame device according to claim 1, characterized in that: a hand buckle groove and a limiting groove are sequentially provided on a front side of the receiving protrusion of the paper frame block based on a paper length direction, the hand buckle groove having an upper opening at an upper side, the limiting groove extending along the paper width direction, and the limiting groove having a lower opening at a lower side. 7.The paper frame device according to claim 6, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ The paper frame block is provided with a limiting convex column above the limiting slot, the limiting convex column extends inward along the paper width direction, and the limiting convex column and the limiting slot have a paper passing slot therebetween, the paper passing slot is communicated with the paper clamping position.

8. The paper frame device according to any one of claims 1 to 7, characterized in that: The paper frame device further comprises a locking block, the paper frame block is provided with a mounting slot in the vertical direction, the bottom of the mounting slot is provided with a through slot penetrating in the vertical direction, the upper end of the locking block is provided with an operation part, the lower end of the locking block is provided with a lock part, the locking block is movably installed in the mounting slot, and the lock part penetrates through the through slot.

9. The paper frame device according to claim 8, characterized in that: The lock part is provided with a stop straight surface and a sliding inclined surface, the stop straight surface is perpendicular to the paper width direction, the stop straight surface and the sliding inclined surface form an acute angle therebetween, and the sliding inclined surface is located at the outer side of the stop straight surface.

10. A thermal printer comprising a base, a cover, a rubber roller, a thermal sheet and a paper frame device, one of the rubber roller and the thermal sheet is arranged on the base, the other of the rubber roller and the thermal sheet is arranged on the cover, the base is provided with a paper bin, and the thermal sheet and the rubber roller are opposite to each other. Characterized in that: The paper frame device is the paper frame device according to any one of claims 1 to 9; The paper frame device is arranged in the paper bin.

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