Thermal transfer printer capable of independently locking thermal transfer ribbon rack on two sides

Abstract

The thermal transfer printer comprises a base, a cover body, a thermal transfer ribbon frame, a thermal transfer ribbon roller assembly, a rubber roller and a thermosensitive piece, the installation side wall of the thermal transfer ribbon frame on each side is provided with a hinge column and a baffle, an installation groove in each side is internally provided with a lock catch and a spring, the fixed end of the lock catch is provided with a hinge hole, and the hinge column and the baffle are hinged to each other. The free end of the lock catch is provided with a clamping part, the lock catch is provided with a wrenching part between the hinge hole and the clamping part, the hinge column is hinged to the hinge hole, the lock catch is provided with a positioning groove, the spring and the baffle are located in the positioning groove, the first end of the spring abuts against the baffle, and the second end of the spring abuts against the groove wall of the positioning groove; locking grooves are formed in the two sides, in the paper width direction, of the rubber roller on the base respectively, the clamping parts and the locking grooves are detachably clamped, and the springs apply elastic force towards the locking grooves to the clamping parts. According to the scheme, when the thermal transfer ribbon frame is opened, unlocking can be achieved by pulling the pulling parts on the two sides, and the thermal transfer ribbon frame is simple in structure, easy to assemble and beneficial to cost reduction.

Description

Technical Field

[0001] The utility model relates to the field of thermal printing, in particular to a thermal transfer printer with double-sided independent locking carbon belt racks. Background Art

[0002] With the popularization of thermal transfer printers such as receipt printers and label printers, thermal transfer printers are not only used in bank ATMs, supermarket checkout counters, catering industry and e-commerce delivery offices, but also in the e-commerce and express delivery industries, where printing is growing rapidly and there are higher requirements for the stability and ease of use of thermal transfer printers.

[0003] A thermal transfer printer is generally equipped with a base, a cover, a carbon ribbon rack, a rubber roller and a thermal film. The carbon ribbon is set on the carbon ribbon rack, and the printing paper and the carbon ribbon enter the position between the rubber roller and the thermal film. By heating the thermal film, thermal transfer is used to form text patterns on the printing paper.

[0004] The existing thermal transfer printer's carbon ribbon rack generally connects two locks on both sides of the carbon ribbon rack through a long rotating shaft. The arrangement of the long rotating shaft is not only not conducive to cost control, but also interferes with the arrangement of the carbon ribbon to a certain extent. In addition, the connection of the long rotating shaft is relatively complicated, affecting assembly efficiency. Utility Model Content

[0005] The utility model aims to provide a thermal transfer printer with double-sided independent locking carbon belt racks.

[0006] In order to realize the utility model purposes, the utility model provides a kind of thermal transfer printer of double-side independent locking ribbon holder, including base, cover, ribbon holder, ribbon roller assembly, rubber roller and thermosensitive sheet, cover hinge part is hinged in base, ribbon holder hinge part is hinged in base, cover and ribbon holder rotate towards same direction, rubber roller is rotatably arranged on base, ribbon roller assembly is arranged on ribbon holder, ribbon holder includes two installation side walls and installation bottom wall, two installation side walls are located at the both sides of paper width direction respectively, installation bottom wall is connected between two installation side walls, thermosensitive sheet is installed at the bottom of installation bottom wall, thermosensitive sheet is oppositely arranged with rubber roller and forms paper path channel extending along paper length direction, the front side of paper path channel is provided with paper outlet;Every side installation side wall is provided with installation groove on the outer wall of thermosensitive sheet based on paper width direction, every side outer wall is provided with hinge post and baffle in installation groove, hinge post extends along paper width direction;Lock catch and spring are arranged in every side installation groove, the fixed end of lock catch is provided with hinge hole, the free end of lock catch is provided with clamping part, lock catch is provided with pulling part between hinge hole and clamping part, hinge post is hinged with hinge hole, lock catch is provided with positioning groove, spring and baffle are located in positioning groove, the first end of spring is abutted with baffle, the second end of spring is abutted with the groove wall of positioning groove;Base is provided with lock groove on the both sides of rubber roller based on paper width direction, clamping part and lock groove are separably engaged, spring applies elastic force towards lock groove for clamping part.

[0007] Further scheme is that hinge hole is provided with connecting screw, connecting screw is connected with hinge post by passing through hinge hole, the head of connecting screw is limitedly matched with the peripheral wall of hinge hole.

[0008] Further scheme is that hinge hole is provided with positioning convex edge, the head of connecting screw is located in hinge hole, the head of connecting screw is limitedly matched with positioning convex edge.

[0009] Further scheme is that spring is arranged along paper length direction, baffle is located at the front side of lock groove based on paper length direction, positioning groove has abutment wall at the rear side in paper length direction, the second end of spring is abutted with abutment wall.

[0010] Further scheme is that abutment wall is provided with positioning column, the second end of spring is sleeved outside positioning column.

[0011] Further scheme is that baffle is arranged in U type or arch shape, the first end of spring is located in U type groove or arch groove of baffle.

[0012] Further scheme is that accommodating cavity is formed in cover, cover is located on base and covers the outside of ribbon holder, and ribbon holder is located in accommodating cavity;Cover is provided with clamping block on the both side walls in paper width direction, base is provided with clamping groove on the both sides of ribbon holder based on paper width direction, clamping block and clamping groove are separably engaged.

[0013] Further, the lock slot is located on the front side of the card slot based on the paper length direction.

[0014] The utility model discloses the beneficial effect is, through setting up the installation groove on the both sides of carbon tape frame respectively, the installation groove of each side installs lock catch and spring, and respectively utilizes hinged post and hinge hole to connect, and can cooperate screw assembly fixed, again through spring for card part adds the elastic force to the lock slot, and it can provide stable locking force and reset force for card part, when opening carbon tape frame, can realize unlocking through pulling the both sides of pulling department, the case not only simple structure, and assembly simple and easy and be favorable to reducing cost. In addition, through the head of connecting screw is located in the hinge hole limit cooperation, it can avoid the interference with cover, and then utilize positioning column, U and arc spring positioning structure, it can make spring stable operation, and, the cover is through the clamping of the card block and card slot, can make the cover stable cover in carbon tape frame outside, and utilize the stagger of lock slot and card slot in paper length direction, then avoid the interference of two cover opening structure, make the cover of two more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure diagram of the utility model thermal transfer printer embodiment.

[0016] Figure 2 It is the structure diagram of the utility model thermal transfer printer embodiment when opening the cover.

[0017] Figure 3 It is the structure diagram of carbon tape frame in the utility model thermal transfer printer embodiment.

[0018] Figure 4 It is the exploded view of lock catch in the utility model thermal transfer printer embodiment.

[0019] Figure 5 It is the section view of the utility model thermal transfer printer embodiment at lock catch.

[0020] The utility model is further described below in connection with the drawings and embodiments. DETAILED DESCRIPTION

[0021] Referring to Figures 1 to 5The thermal transfer printer comprises a base 11, a cover 12, a ribbon holder 2, a ribbon roller assembly, a rubber roller 111 and a thermal sensitive sheet 204, the cover hinged part of the cover 12 is hinged to the base 11, the ribbon holder hinged part 22 of the ribbon holder 2 is hinged to the base 11, the cover 12 and the ribbon holder 2 rotate in the same direction, the rubber roller 111 is rotatably arranged on the base 11, the thermal sensitive sheet 204 and the ribbon roller assembly are arranged on the ribbon holder 2, the ribbon roller assembly comprises a printing roller 212 and a recycling roller 211, the printing roller 212 and the recycling roller 211 are arranged between the two mounting side walls 201, the thermal sensitive sheet 204 is arranged opposite to the rubber roller 111 and forms a paper passing channel, the front side of the paper passing channel is provided with a paper outlet 10.

[0022] The ribbon holder 2 comprises two mounting side walls 201 and a mounting bottom wall 204, the two mounting side walls 201 are respectively located on both sides of the paper width direction Y, the mounting bottom wall 204 is connected between the two mounting side walls 201, the thermal sensitive sheet 204 is mounted at the bottom of the mounting bottom wall 204, the thermal sensitive sheet 204 is arranged opposite to the rubber roller 111 and forms a paper passing channel extending along the paper length direction X, the front side of the paper passing channel is provided with a paper outlet 10, and the paper length direction X is perpendicular to the paper width direction Y.

[0023] The cover 12 forms a containing cavity 122, the cover 12 is located on the base 11 and covers the outside of the ribbon holder 2, the ribbon holder 2 is located in the containing cavity 122, the cover 12 is provided with a clamping block 123 on the two side walls in the paper width direction Y, the base 11 is provided with a clamping groove 14 on both sides of the ribbon holder 2 based on the paper width direction Y, the locking groove 13 is located on the front side of the clamping groove 14 based on the paper length direction X, and the clamping block 123 and the clamping groove 14 are detachably clamped.

[0024] Each mounting side wall 201 is provided with a mounting groove 23 on the outer wall 231 of the thermal sensitive sheet 204 based on the paper width direction Y, each outer wall 231 is provided with a hinged column 232 and a baffle 233 in the mounting groove 23, the hinged column 232 is located above the baffle 233, the hinged column 232 extends along the paper width direction Y, and the baffle 233 is located on the front side of the paper length direction X.

[0025] The locking buckle 3 and the spring 234 are arranged in each mounting groove 23, the fixed end of the locking buckle 3 is provided with a hinged hole 31, the free end of the locking buckle 3 is provided with a clamping part 34, the hinged hole 31 is located above the clamping part 34, the hinged hole 31 extends along the paper width direction, the clamping part 34 is arranged in the form of a clamping hook, the locking buckle 3 is provided with a pulling part 33 between the hinged hole 31 and the clamping part 34, the pulling part 33 has a pulling groove, the hinged column 232 is hinged to the hinged hole 31, the hinged hole 31 is provided with a connecting screw 235, the connecting screw 235 passes through the hinged hole 31 and is connected with the hinged column 232, the head of the connecting screw 235 is limitedly matched with the peripheral wall of the hinged hole 31, specifically, the hinged hole 31 is provided with a positioning convex edge 32, the head of the connecting screw 235 is located in the hinged hole 31, and the head of the connecting screw 235 is limitedly matched with the positioning convex edge 32.

[0026] The inner side of the lock catch 3 is provided with a positioning groove 35, the spring 234 and the baffle 233 are located in the positioning groove 35, the first end of the spring 234 abuts against the baffle 233, the second end of the spring 234 abuts against the groove wall of the positioning groove 35, the abutting wall is provided with a positioning column 236, and the second end of the spring 234 is sleeved outside the positioning column 236.

[0027] The spring 234 is arranged along the paper length direction X, the baffle 233 is located on the front side of the lock slot 13 based on the paper length direction X, the positioning groove 35 has an abutting wall on the rear side in the paper length direction X, the second end of the spring 234 abuts against the abutting wall, the baffle 233 is arranged in a U-shaped or arc-shaped manner, and the first end of the spring 234 is located in the U-shaped groove or the arc-shaped groove of the baffle 233.

[0028] The base 11 is provided with the lock slot 13 on both sides of the rubber roller 111 based on the paper width direction Y, the clamping part 34 is detachably clamped with the lock slot 13, and the spring 234 applies an elastic force to the clamping part 34 towards the lock slot 13.

[0029] As can be seen from the above, by arranging the mounting groove on both sides of the carbon tape frame, the mounting groove on each side is mounted with the lock catch and the spring, and is connected with the hinge hole and the hinge column respectively, and can be fixed by cooperating with the screw assembly, and then the spring applies an elastic force to the clamping part towards the lock slot, which can provide stable locking force and reset force for the clamping part, and when opening the carbon tape frame, the unlocking can be realized by pulling the pulling part on both sides. The present case not only has a simple structure, but also is easy to assemble and is conducive to reducing the cost.

Claims

1. A thermal transfer printer with double-sided independent locking ribbon cartridge, comprising a base, a cover, a ribbon cartridge, a ribbon roller assembly, a rubber roller and a thermal sheet, a cover hinge of the cover is hinged to the base, a ribbon cartridge hinge of the ribbon cartridge is hinged to the base, the cover and the ribbon cartridge rotate in the same direction, the rubber roller is rotatably arranged on the base, the ribbon roller assembly is arranged on the ribbon cartridge, the ribbon cartridge comprises two installation side walls and an installation bottom wall, the two installation side walls are respectively located on both sides of a paper width direction, the installation bottom wall is connected between the two installation side walls, the thermal sheet is installed at the bottom of the installation bottom wall, the thermal sheet is arranged opposite to the rubber roller and forms a paper passing channel extending along a paper length direction, a paper outlet is arranged on the front side of the paper passing channel. Characterized in that: the installation side wall on each side is provided with an installation slot on the outer wall of the thermal sheet based on the paper width direction, the outer wall on each side is provided with a hinge column and a baffle in the installation slot, the hinge column extends along the paper width direction; the installation slot on each side is provided with a lock catch and a spring, a hinge hole is arranged on the fixed end of the lock catch, a clamping part is arranged on the free end of the lock catch, a pulling part is arranged between the hinge hole and the clamping part of the lock catch, the hinge column is hinged with the hinge hole, the lock catch is provided with a positioning slot, the spring and the baffle are located in the positioning slot, the first end of the spring abuts against the baffle, the second end of the spring abuts against the slot wall of the positioning slot; the base is provided with a lock slot on both sides of the rubber roller based on the paper width direction, the clamping part is detachably clamped with the lock slot, the spring applies an elastic force to the clamping part towards the lock slot.

2. The thermal transfer printer according to claim 1, characterized in that: a connecting screw is arranged in the hinge hole, the connecting screw is connected with the hinge column through the hinge hole, and the head of the connecting screw is limitedly matched with the peripheral wall of the hinge hole.

3. The thermal transfer printer according to claim 2, characterized in that: a positioning protrusion is arranged in the hinge hole, the head of the connecting screw is located in the hinge hole, and the head of the connecting screw is limitedly matched with the positioning protrusion.

4. The thermal transfer printer according to claim 1, characterized in that: the spring is arranged along the paper length direction, the baffle is located on the front side of the lock slot based on the paper length direction, the positioning slot has an abutting wall on the rear side in the paper length direction, and the second end of the spring abuts against the abutting wall.

5. The thermal transfer printer according to claim 4, characterized in that: the abutting wall is provided with a positioning column, and the second end of the spring is sleeved outside the positioning column.

6. The thermal transfer printer according to claim 4, characterized in that: the baffle is arranged in a U-shaped or arc-shaped manner, and the first end of the spring is located in the U-shaped slot or arc-shaped slot of the baffle.

7. The thermal transfer printer according to any one of claims 1 to 6, characterized in that: a containing cavity is formed in the cover, the cover is located on the base and covers the outside of the ribbon cartridge, and the ribbon cartridge is located in the containing cavity. The cover is provided with a clamping block on each side wall in the paper width direction, the base is provided with a clamping groove on each side in the paper width direction based on the carbon tape frame, and the clamping block and the clamping groove are detachably clamped.

8. The thermal transfer printer of claim 7, wherein: The locking groove is located on the front side of the clamping groove based on the paper length direction.

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