Roll paper mounting bracket for thermal printer

Abstract

The invention discloses a roll paper mounting bracket for a thermal printer, relates to the field of thermal roll paper, and solves the problem that the conventional thermal roll paper is relatively time-consuming to take and mount, the roll paper mounting bracket comprises a storage box and two support frames symmetrically and fixedly mounted on the outer side of the storage box, and a plurality of roll paper bodies which are vertically and symmetrically distributed are arranged on the inner side of the storage box; a protective top plate is arranged at the top of the storage box; a material taking box is arranged at the bottom of the storage box; the material taking mechanism is used for quickly taking the roll paper body, and the material taking mechanism is mounted on the inner side of the storage box; the roll paper bodies are vertically and sequentially loaded into the storage box through the material taking mechanism, the roll paper bodies fall on the material taking box in a pull-down mode, workers can take roll paper rapidly and conveniently, the supporting frame can be placed beside a label printing machine, the roll paper can be replaced in time conveniently, and therefore the effect of rapid material taking and replacing is achieved.

Description

Technical Field

[0001] The invention relates to the field of thermal roll paper, in particular to a roll paper mounting bracket for a thermal printer. Background Art

[0002] Thermal roll paper is a specially treated paper with a layer of thermal coating on its surface. This coating will undergo a chemical reaction when heated, thereby changing color. It is usually used in various devices that require printing, such as fax machines, cash registers, credit card terminals, etc. Its working principle is to heat the coating through a thermal printer to change its color, thereby achieving the printing effect.

[0003] Thermal paper rolls are stored in lockers. In particular, thermal label printers used in supermarkets have frequent printing needs, so paper rolls need to be replaced frequently. However, the paper rolls are placed in other places. It is extremely time-consuming for staff to get and replace the paper rolls, which causes the goods waiting in line for checkout to pile up, affecting work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a roll paper mounting bracket for a thermal printer to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A paper roll mounting bracket for a thermal printer comprises: a storage box and two support frames symmetrically fixedly mounted on the outer side of the storage box, a plurality of vertically symmetrically distributed paper roll bodies are arranged on the inner side of the storage box, a protective top plate is arranged on the top of the storage box to prevent debris from entering the storage box, and a material picking box is arranged at the bottom of the storage box for receiving the taken out paper roll bodies; it also comprises: a material picking mechanism for quickly taking the paper roll bodies, the material picking mechanism is mounted on the inner side of the storage box; a material fixing mechanism for separating and positioning the paper roll bodies stored inside the storage box, the material fixing mechanism is mounted on the inner side of the storage box, the material fixing mechanism comprises a plurality of material fixing strips equidistantly distributed and fixedly mounted on the outer side of the conveyor belt, the outer side of the paper roll body contacts the outer side of the adjacent material fixing strips, and the contact surface between the material fixing strips and the paper roll body is an arc structure; a feeding mechanism for batch feeding of the paper roll bodies, the feeding mechanism is mounted on the outer side of the storage box.

[0006] Preferably, the material-retrieving mechanism includes two positioning plates symmetrically arranged on the inner side of the storage box, both ends of the positioning plates are provided with rotating rods rotatably installed on the inner side of the storage box, a conveyor belt is rotatably installed between the two rotating rods, and when the rotating rod rotates, it can drive the conveyor belt to rotate, the outer side of the paper roll body contacts the outer side of the conveyor belt, so that the two conveyor belts clamp the paper roll body, and the outer side of the positioning plate contacts the inner side of the conveyor belt to provide support for the conveyor belt, and four sliding parts installed on the storage box are fixedly installed on the top of the material-retrieving box. The mounting rod at the bottom facilitates pulling the material box out from the bottom of the storage box. Two symmetrically distributed mounting boxes are arranged on both sides of the storage box. Both ends of the rotating rod extend to the inner side of the mounting box. Gears are fixedly installed on both ends of the rotating rod located at the bottom end of the positioning plate. A rack plate matching the gear is slidably installed on the inner side of the positioning plate. The bottom end of the rack plate is arranged on the outer side of the material box. When the material box is pulled, the gear can be driven to rotate through the rack plate, so that the two conveyor belts push the paper roll body downward into the material box.

[0007] Preferably, the material fixing mechanism further comprises four slide bars symmetrically arranged on both sides of the rack plate, a slide cavity for limiting the sliding movement of the slide bar is provided on the outer side of the rack plate, a spring 1 is fixedly installed between the slide bar and the inner side of the slide cavity, so that the slide bar can move along the inner side of the slide cavity and compress the spring 1, a guide groove 1 and a guide groove 2 are provided on the inner side of the installation box for limiting the sliding movement of the slide bar, the guide groove 1 and the guide groove 2 are both L-shaped structures, the guide groove 1 and the guide groove 2 are distributed in parallel, and the guide groove 1 and the guide groove 2 are L-shaped structures, and the guide groove 1 and the guide groove 2 are distributed in parallel. Both ends of the first groove are connected with the two ends of the second guide groove through a guide block, so that the first guide groove and the second guide groove are in a parallelogram structure. The outer side of the guide block is an inclined surface structure, and the end of the slide bar away from the spring one is an arc structure, so that the slide bar can move along the inner side of the slide cavity when it contacts the inclined surface of the guide block. Two symmetrically distributed mounting rods are fixedly installed on both sides of the material picking box, and the bottom end of the rack plate is slidably installed on the outer side of the mounting rod, so that the material picking box pulls the rack plate to move.

[0008] Preferably, the feeding mechanism includes a vertical plate fixedly installed on both sides of the storage box, the vertical plate is located between the two installation boxes, a push block is slidably installed on the inner side of the vertical plate, and both ends of the push block are arc-shaped structures, and an arc block in contact with the outer side of the push block is fixedly installed on one side of the installation box close to the vertical plate, and two springs are arranged on both sides of the arc block, and the springs are fixedly installed between the vertical plate and the installation box to facilitate the movement and reset of the installation box, and a long groove for the limited sliding of the rotating rod is opened on the outer side of the storage box, a pull rod is fixedly installed between the top of the arc block and the bottom of the protective top plate, and the protective top plate can be pulled The pull rod drives the arc block to move, a cavity for the limited sliding of the pull rod and the push block is opened on the inner side of the vertical plate, a tension spring is fixedly installed between the bottom of the push block and the inner side of the cavity, and four support rods in a rectangular array are fixedly installed on the bottom of the protective top plate, and the support rods are slidably installed on the top of the storage box to improve the stability of the movement of the protective top plate.

[0009] Preferably, a material receiving pad is fixedly installed on the inner side of the material taking box, and the top of the material receiving pad is an arc-shaped concave structure, which is convenient for catching the falling paper roll body.

[0010] Preferably, handles are fixedly mounted on the top of the protective top plate and the outer side of the material removal box to improve the convenience of loading and removing materials.

[0011] Preferably, two symmetrically distributed magnet blocks are fixedly mounted on the bottom of the storage box, and the top of the material taking box is provided with grooves for limiting and inserting the magnet blocks, so that the material taking box can be adsorbed under the storage box.

[0012] Preferably, protective side plates are fixedly mounted on both sides of the storage box, and the inner sides of the protective side plates are in contact with the outer sides of the installation box, thereby providing protection for the installation box and preventing accidental touching.

[0013] Preferably, ratchets are fixedly mounted on both ends of the rotating rod located at the top of the positioning plate, and elastic teeth matching the ratchets are fixedly mounted on the inner side of the mounting box to prevent the rotating rod from rebounding and resetting, thereby facilitating sequential material retrieval.

[0014] Preferably, two symmetrically distributed material guide blocks are fixedly mounted on the top of the storage box, and the top of the material guide blocks is an inclined structure, which facilitates the loading of the paper roll body into the storage box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a material taking mechanism to vertically load the paper roll body into the storage box in sequence, and adopts a pull-down method to make the paper roll body fall on the material taking box, which is convenient for staff to quickly take the paper roll, and the support frame can be placed next to the label printing machine to facilitate timely replacement of the paper roll, thereby achieving the effect of rapid material taking and replacement.

[0016] The present invention can provide positioning for the paper roll body between the two conveyor belts through the material fixing mechanism when taking materials, thereby preventing multiple paper roll bodies from being discharged at the same time, and separate and store multiple paper roll bodies through multiple material fixing strips to prevent the paper roll bodies from piling up, making it easy to take materials in sequence, thereby achieving the effect of continuous material taking and neat storage.

[0017] The present invention uses a feeding mechanism, which can move the two conveyor belts away from each other when the protective top plate is pulled upward, making it easy to load the paper roll body between the two conveyor belts, and when the protective top plate is loosened, the two conveyor belts automatically separate the paper roll body, and the protective top plate can prevent debris from entering the storage box, thereby achieving the effect of fast feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the storage box and the protective top plate structure of the present invention; Figure 3 It is a schematic diagram of the structure of the material bar and the paper roll body in the present invention; Figure 4 It is a schematic diagram of the structure of the material taking box and the material receiving pad in the present invention; Figure 5 It is a schematic diagram of the structure of the mounting box and the rack plate in the present invention; Figure 6 It is a schematic diagram of the guide block and the slide rod structure in the present invention; Figure 7 It is a schematic diagram of the structure of the vertical plate and the material guide block in the present invention; Figure 8 for Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0019] In the figure: 1. storage box; 2. support frame; 3. paper roll body; 4. protective top plate; 5. material box; 6. positioning plate; 7. rotating rod; 8. conveyor belt; 9. handle; 10. mounting rod; 11. mounting box; 12. gear; 13. rack plate; 14. material fixing strip; 15. slide bar; 16. spring 1; 17. guide groove 1; 18. guide groove 2; 19. guide block; 20. installation hanging rod; 21. material guide block; 22. vertical plate; 23. push block; 24. arc block; 25. spring 2; 26. pull rod; 27. tension spring; 28. support rod; 29. ​​material receiving pad; 30. magnet block; 31. protective side plate; 32. ratchet; 33. elastic tooth. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 8 The paper roll mounting bracket for a thermal printer shown in the figure comprises a storage box 1 and two support frames 2 symmetrically fixedly mounted on the outside of the storage box 1, a plurality of vertically symmetrically distributed paper roll bodies 3 are arranged on the inner side of the storage box 1, a protective top plate 4 is arranged on the top of the storage box 1 to prevent debris from entering the storage box 1, and a material picking box 5 is arranged on the bottom of the storage box 1 for receiving the taken out paper roll bodies 3; it also comprises: a picking mechanism for quickly taking the paper roll bodies 3, the picking mechanism being mounted on the inner side of the storage box 1; a fixing mechanism for separating and positioning the paper roll bodies 3 stored in the storage box 1, the fixing mechanism being mounted on the inner side of the storage box 1, the fixing mechanism comprising a plurality of fixing strips 14 equidistantly fixedly mounted on the outer side of the conveyor belt 8, the outer side of the paper roll body 3 is in contact with the outer side of the adjacent fixing strips 14, and the contact surface between the fixing strips 14 and the paper roll body 3 is an arc structure; a feeding mechanism for batch feeding of the paper roll bodies 3, the feeding mechanism being mounted on the outer side of the storage box 1.

[0022] The material taking mechanism includes two positioning plates 6 symmetrically arranged on the inner side of the storage box 1, and both ends of the positioning plates 6 are provided with rotating rods 7 rotatably installed on the inner side of the storage box 1. A conveyor belt 8 is rotatably installed between the two rotating rods 7. When the rotating rod 7 rotates, it can drive the conveyor belt 8 to rotate, and the outer side of the paper roll body 3 contacts the outer side of the conveyor belt 8, so that the two conveyor belts 8 clamp the paper roll body 3, and the outer side of the positioning plate 6 contacts the inner side of the conveyor belt 8 to provide support for the conveyor belt 8. Four mounting rods 10 slidably installed on the bottom of the storage box 1 are fixedly installed on the top of the material taking box 5, which is convenient for pulling the material taking box 5 out from the bottom of the storage box 1. Two mounting rods 10 slidably installed on the bottom of the storage box 1 are provided on both sides of the storage box 1. The mounting box 11 is symmetrically distributed, and both ends of the rotating rod 7 extend to the inner side of the mounting box 11. Gears 12 are fixedly installed at both ends of the rotating rod 7 at the bottom of the positioning plate 6. A rack plate 13 matching the gear 12 is slidably installed on the inner side of the positioning plate 6. The bottom end of the rack plate 13 is arranged on the outer side of the material picking box 5. When the material picking box 5 is pulled, the gear 12 can be driven to rotate through the rack plate 13, so that the two conveyor belts 8 push the paper roll body 3 downward into the material picking box 5. Two symmetrically distributed magnet blocks 30 are fixedly installed at the bottom of the storage box 1. A groove for limiting the insertion of the magnet block 30 is provided on the top of the material picking box 5, so that the material picking box 5 is convenient for being adsorbed under the storage box 1. The positioning plate 6 can provide support for the inner side of the conveyor belt 8, so that the two conveyor belts 8 can clamp and position multiple paper roll bodies 3. When the material picking box 5 is pulled downward, it can drive the rack plate 13 to move downward synchronously, so that the rack plate 13 drives the gear 12 to rotate, and the gear 12 drives the rotating rod 7 to rotate, so that the conveyor belt 8 rotates downward and pushes the bottom paper roll body 3 into the material picking box 5, so that the paper roll body 3 can be taken out, and after taking the material, the material picking box 5 is pulled upward so that the magnet block 30 adsorbs the material picking box 5, thereby achieving the effect of quickly taking the material.

[0023] The material fixing mechanism also includes four slide bars 15 symmetrically arranged on both sides of the rack plate 13. A slide cavity for limiting the sliding of the slide bar 15 is provided on the outer side of the rack plate 13. A spring 16 is fixedly installed between the slide bar 15 and the inner side of the slide cavity, so that the slide bar 15 can move along the inner side of the slide cavity and compress the spring 16. A guide groove 17 and a guide groove 2 18 for limiting the sliding of the slide bar 15 are provided on the inner side of the installation box 11. Both the guide groove 17 and the guide groove 2 18 are L-shaped structures. The guide groove 17 and the guide groove 2 18 are parallelly distributed. The guide groove 17 Both ends of the guide block 19 are butted against the two ends of the guide groove 18, so that the guide groove 17 and the guide groove 18 are in a parallelogram structure, the outer side of the guide block 19 is an inclined surface structure, and the end of the slide bar 15 away from the spring 16 is an arc structure, so that the slide bar 15 can move along the inner side of the slide cavity when it contacts the inclined surface of the guide block 19. Two symmetrically distributed mounting rods 20 are fixedly installed on both sides of the material taking box 5, and the bottom end of the rack plate 13 is slidably installed on the outer side of the mounting rod 20, so that the material taking box 5 pulls the rack plate 13 to move; When the rack plate 13 moves downward, it can drive the slide bar 15 to move downward along the inner side of the guide groove 17. When the slide bar 15 contacts the guide block 19, the slide bar 15 can move along the inclined surface of the guide block 19, so that the slide bar 15 moves along the sliding cavity of the rack plate 13 and compresses the spring 16. When the slide bar 15 moves away from the guide block 19, the rebound force of the spring 16 is used to make the slide bar 15 abut against the inner side of the guide groove 2 18. Therefore, when the rack plate 13 moves upward, the slide bar 15 can move along the guide groove The inner side of the second guide groove 18 moves upward, so that the rack plate 13 is away from the gear 12, and when the slide bar 15 contacts another guide block 19, the slide bar 15 can return from the guide groove 2 18 to the guide groove 1 17, so that the rack plate 13 can contact the gear 12 again, realizing the unidirectional rotation of the gear 12, and the fixed material strip 14 on the conveyor belt 8 can separate and push each paper roll body 3 in sequence, preventing the paper roll body 3 from piling up, making it convenient to take out the materials in sequence, thereby achieving the effect of continuous taking out and neat storage.

[0024] Working principle: First, the staff pulls the material box 5 downward, so that the material box 5 pulls the rack plate 13 downward through the installation hanging rod 20, and the rack plate 13 drives the slide bar 15 to move along the inner side of the guide groove 17, and drives the gear 12 to rotate. When the slide bar 15 contacts the guide block 19, the slide bar 15 moves downward along the inclined surface of the guide block 19, and the reaction force of the guide block 19 on the slide bar 15 is used to make the slide bar 15 move along the sliding cavity of the rack plate 13. The spring 16 is compressed. When the slide bar 15 is away from the guide block 19, the rebound force of the spring 16 is used to push the slide bar 15 to move and reset, and abut against the inner side of the guide groove 2 18. At the same time, the gear 12 drives the corresponding rotating rod 7 to rotate, so that the rotating rod 7 cooperates with another rotating rod 7 to drive the conveyor belt 8 to rotate downward along the inner side of the positioning plate 6. At this time, the conveyor belt 8 pushes the paper roll body 3 downward through the fixed material strip 14, so that the lowermost paper roll body 3 is separated from the conveyor belt 8. The paper roll body 3 can fall on the material picking box 5, and the staff can take out the paper roll body 3. At the same time, the conveyor belt 8 and the fixed material strip 14 provide clamping and support for the remaining paper roll bodies 3 to prevent them from falling. Then, the staff pulls the material picking box 5 to move upward, and the material picking box 5 drives the rack plate 13 to move upward through the installation hanging rod 20, and the rack plate 13 drives the slide bar 15 to move upward along the inner side of the guide groove 18, so that the rack plate 13 is away from the gear 12, and when the slide bar 15 contacts with another guide stopper 19, the slide bar 15 is returned from the guide groove 18 to the guide groove 17, and the rack plate 13 can contact with the gear 12 again to realize the unidirectional rotation of the gear 12. Finally, the magnet block 30 is inserted into the groove at the top of the material picking box 5, so that the material picking box 5 is fixed to the bottom of the storage box 1, and the paper roll body 3 is taken out, thereby achieving the effect of fast material taking, and facilitating the neat storage of the paper roll body 3, and improving the convenience of taking the paper roll body 3.

[0025] Example 2: Please refer to Figure 2-Figure 8, this embodiment further explains the first embodiment, the feeding mechanism shown in the figure includes a vertical plate 22 fixedly installed on both sides of the storage box 1, the vertical plate 22 is located between the two installation boxes 11, and a push block 23 is slidably installed on the inner side of the vertical plate 22, and both ends of the push block 23 are arc-shaped structures, and an arc block 24 in contact with the outer side of the push block 23 is fixedly installed on one side of the installation box 11 close to the vertical plate 22, and two springs 25 are arranged on both sides of the arc block 24, and the springs 25 are fixedly installed between the vertical plate 22 and the installation box 11, so as to facilitate the movement and restoration of the installation box 11 A long groove for limiting the sliding of the rotating rod 7 is provided on the outside of the storage box 1, a pull rod 26 is fixedly installed between the top of the arc block 24 and the bottom of the protective top plate 4, and pulling the protective top plate 4 can drive the arc block 24 to move through the pull rod 26, and a cavity for limiting the sliding of the pull rod 26 and the push block 23 is provided on the inner side of the vertical plate 22, and a tension spring 27 is fixedly installed between the bottom of the push block 23 and the inner side of the cavity, and four support rods 28 in a rectangular array are fixedly installed on the bottom of the protective top plate 4, and the support rods 28 are slidably installed on the top of the storage box 1 to improve the stability of the movement of the protective top plate 4.

[0026] In this embodiment: when loading, the staff can pull the protective top plate 4 upward, so that the protective top plate 4 drives the two pull rods 26 to move synchronously, and the pull rod 26 drives the push block 23 to move along the cavity of the vertical plate 22, and stretches the tension spring 27, so that the arc surface of the push block 23 pushes the arc block 24 to move, and the arc block 24 drives the installation box 11 to move synchronously, so that the installation box 11 drives the rotating rod 7 to move along the long groove on the storage box 1, and stretches the spring 25, and the rotating rod 7 drives the positioning plate 6 to move synchronously, so that the conveyor belts 8 on the two positioning plates 6 are away from each other. , the staff can load the paper roll body 3 between the two conveyor belts 8, and then loosen the protective top plate 4 and use the elasticity of the tension spring 27 to reset the protective top plate 4. The protective top plate 4 provides protection for the top of the storage box 1 to prevent debris from entering the storage box 1, and the push block 23 can be away from the arc block 24. The elasticity of the spring 25 is used to reset the installation box 11, and the two conveyor belts 8 can contact the paper roll body 3, and the fixed material strips 14 on the conveyor belts 8 can separate multiple paper roll bodies 3 in sequence, thereby achieving the effect of fast feeding.

[0027] Example 3: Please refer to Figure 1-Figure 7The present embodiment further illustrates other embodiments. The inner side of the material picking box 5 shown in the figure is fixedly provided with a material receiving pad 29, and the top of the material receiving pad 29 is an arc-shaped concave structure, which is convenient for catching the falling paper roll body 3. The top of the protective top plate 4 and the outer side of the material picking box 5 are fixedly provided with handles 9 to improve the convenience of loading and removing materials. Protective side plates 31 are fixedly provided on both sides of the storage box 1. The inner side of the protective side plates 31 contacts the outer side of the installation box 11 to provide protection for the installation box 11 to prevent accidental touch. Ratchets 32 are fixedly provided at both ends of the rotating rod 7 at the top of the positioning plate 6, and elastic teeth 33 matching the ratchet 32 ​​are fixedly provided on the inner side of the installation box 11 to prevent the rotating rod 7 from rebounding and resetting, so as to facilitate sequential material removal. Two symmetrically distributed guide blocks 21 are fixedly provided on the top of the storage box 1, and the top of the guide blocks 21 is an inclined structure, which is convenient for loading the paper roll body 3 into the storage box 1.

[0028] When the paper roll body 3 is in contact with the inner side of the material picking box 5, a material receiving pad 29 can be installed on the inner side of the material picking box 5, so that the paper roll body 3 falls directly on the arc-shaped concave surface on the top of the material receiving pad 29, and the elasticity of the material receiving pad 29 is used to provide protection for the paper roll body 3. The staff can pull the protective top plate 4 upward or pull the material picking box 5 downward by the handle 9, thereby improving the convenience of loading and retrieving materials. The two protective side plates 31 on the storage box 1 can provide protection for the installation box 11 to prevent unauthorized personnel from accidentally touching it. The rotating rod 7 can drive the two ratchet wheels 32 to rotate synchronously, and the ratchet wheels 32 cooperate with the elastic latch teeth 33 to prevent the rotating rod 7 from rotating, so that the paper roll body 3 between the two conveyor belts 8 can be unloaded in sequence. When loading, the staff can insert the paper roll body 3 between the protective top plate 4 and the top of the storage box 1, so that the paper roll body 3 can enter between the two conveyor belts 8 along the inclined surface of the guide block 21, thereby improving the convenience of loading.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roll paper mounting bracket for a thermal printer, characterized in that: include: A storage box (1) and two support frames (2) symmetrically fixedly mounted on the outside of the storage box (1); a plurality of vertically symmetrically distributed paper roll bodies (3) are arranged on the inside of the storage box (1); a protective top plate (4) is arranged on the top of the storage box (1); and a material removal box (5) is arranged on the bottom of the storage box (1); Also includes: A material taking mechanism is used for quickly taking the paper roll body (3), the material taking mechanism is installed on the inner side of the storage box (1), the material taking mechanism comprises two positioning plates (6) symmetrically arranged on the inner side of the storage box (1), both ends of the positioning plates (6) are provided with rotating rods (7) rotatably installed on the inner side of the storage box (1), a conveyor belt (8) is rotatably installed between the two rotating rods (7), the outer side of the paper roll body (3) contacts the outer side of the conveyor belt (8), and four conveyor belts (8) are fixedly installed on the top of the material taking box (5). A mounting rod (10) is slidably mounted on the bottom of the storage box (1), two symmetrically distributed mounting boxes (11) are arranged on both sides of the storage box (1), both ends of the rotating rod (7) extend to the inner side of the mounting boxes (11), and both ends of the rotating rod (7) located at the bottom end of the positioning plate (6) are fixedly mounted with gears (12), and a rack plate (13) matching with the gear (12) is slidably mounted on the inner side of the positioning plate (6), and the bottom end of the rack plate (13) is arranged on the outer side of the material taking box (5); a material fixing mechanism, used for separating and positioning the paper roll body (3) stored inside the storage box (1), the material fixing mechanism being installed on the inner side of the storage box (1), the material fixing mechanism comprising a plurality of material fixing strips (14) fixedly installed on the outer side of the conveyor belt (8) at equal intervals, the outer side of the paper roll body (3) being in contact with the outer side of an adjacent material fixing strip (14); A feeding mechanism is used for feeding the paper roll body (3) in batches, and the feeding mechanism is installed on the outside of the storage box (1).

2. The thermal printer roll paper mounting bracket according to claim 1, characterized in that: The material fixing mechanism also includes four slide bars (15) symmetrically arranged on both sides of the rack plate (13); a slide cavity for limiting the sliding movement of the slide bar (15) is provided on the outer side of the rack plate (13); a spring 1 (16) is fixedly installed between the slide bar (15) and the inner side of the slide cavity; a guide groove 1 (17) and a guide groove 2 (18) for limiting the sliding movement of the slide bar (15) are provided on the inner side of the installation box (11); both ends of the guide groove 1 (17) are butted with both ends of the guide groove 2 (18) through a guide stopper (19); the outer side of the guide stopper (19) is an inclined surface structure; two symmetrically distributed installation hanging rods (20) are fixedly installed on both sides of the material picking box (5); the bottom end of the rack plate (13) is slidably installed on the outer side of the installation hanging rod (20).

3. The roll paper mounting bracket for a thermal printer according to claim 2, characterized in that: The feeding mechanism comprises a vertical plate (22) fixedly mounted on both sides of the storage box (1), a push block (23) slidably mounted on the inner side of the vertical plate (22), an arc block (24) in contact with the outer side of the push block (23) fixedly mounted on the side of the installation box (11) close to the vertical plate (22), two springs (25) are arranged on both sides of the arc block (24), the springs (25) are fixedly mounted between the vertical plate (22) and the installation box (11), and the outer side of the storage box (1) is provided with a A long groove is provided for limiting sliding of the rotating rod (7); a pull rod (26) is fixedly installed between the top of the arc block (24) and the bottom of the protective top plate (4); a cavity is provided on the inner side of the vertical plate (22) for limiting sliding of the pull rod (26) and the push block (23); a tension spring (27) is fixedly installed between the bottom of the push block (23) and the inner side of the cavity; four support rods (28) in a rectangular array are fixedly installed on the bottom of the protective top plate (4); and the support rods (28) are slidably installed on the top of the storage box (1).

4. The thermal printer roll paper mounting bracket according to claim 1, characterized in that: A material receiving pad (29) is fixedly mounted on the inner side of the material taking box (5), and the top of the material receiving pad (29) is an arc-shaped concave structure.

5. The thermal printer roll paper mounting bracket according to claim 1, characterized in that: Handles (9) are fixedly mounted on the top of the protective top plate (4) and the outer side of the material taking box (5).

6. The roll paper mounting bracket for a thermal printer according to claim 1, characterized in that: Two symmetrically distributed magnet blocks (30) are fixedly mounted on the bottom of the storage box (1), and a groove for limiting insertion of the magnet blocks (30) is provided on the top of the material removal box (5).

7. The roll paper mounting bracket for a thermal printer according to claim 1, characterized in that: Protective side plates (31) are fixedly mounted on both sides of the storage box (1), and the inner sides of the protective side plates (31) are in contact with the outer sides of the installation box (11).

8. The roll paper mounting bracket for a thermal printer according to claim 2, characterized in that: Ratchets (32) are fixedly mounted on both ends of the rotating rod (7) located at the top end of the positioning plate (6), and elastic latch teeth (33) matching the ratchet (32) are fixedly mounted on the inner side of the mounting box (11).

9. The roll paper mounting bracket for a thermal printer according to claim 3, characterized in that: Two symmetrically distributed material guide blocks (21) are fixedly mounted on the top of the storage box (1); the tops of the material guide blocks (21) are inclined structures.

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