Feeding device of thermosensitive film printer

Abstract

The utility model relates to the technical field of printer feeding, in particular to a thermosensitive film printer feeding device which comprises a bottom plate. A printer body is arranged on the bottom plate, a conveying mechanism is arranged in the printer body in a penetrating mode, a plurality of storage mechanisms are arranged on the conveying mechanism in the conveying direction, the storage mechanisms are located on the inner sides of the limiting supporting assemblies, and a box cover is rotationally installed in an opening in the upper portion of the storage box through a pin shaft. When the films in the storage mechanism are used up, optical signals emitted by the signal emission module can be received by the signal receiving module when the signal emission module loses blocking, and the storage mechanism storing the films on the conveying belt can be conveyed into the printer body again under the operation of the first motor. And the effect of film conveying is achieved through cooperation, the use convenience of the thermosensitive film printer is effectively improved, and continuous supply of films in emergency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of printer feeding, in particular to a thermal film printer feeding device. Background Art

[0002] Thermal film printers work on the same principle as ordinary printers, with the only difference being that a semiconductor heating element is installed on the print head. When printing, the print head heats up and contacts the printed film, so that the heated area of ​​the thermal film forms a different color to contrast with the unheated area, thereby achieving the purpose of imaging. The image carrier printed by a thermal film printer is thermal film, which is usually stacked and placed inside the printer. When in use, the feeding mechanism separates the thermal film into individual sheets for printing.

[0003] A patent with announcement number CN 115140580 A discloses a feeding mechanism for a medical thermal film printer, including a storage box, a discharge port is provided on the front end surface of the storage box, a box cover is rotatably connected to the upper end of the storage box through a hinge, a sorting device is slidably connected to the storage box, a conveying device and a discharge device are rotatably connected to the storage box, and the gap between the conveying roller and the return roller is smaller than the distance between two films, so that the excess film will be pushed upward and backward under the action of the rotation of the return roller, thereby achieving the effect of conveying a single film, avoiding the stacking and delivery of multiple films, and ensuring the normal operation of the printer.

[0004] However, since the film capacity of the existing printer feeding mechanism is small, the film needs to be frequently replenished during use, which affects the normal printing work of the printer, and the continuous printing efficiency is low, resulting in inconvenience in use; therefore, a thermal film printer feeding device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and to address the problems existing in the prior art, the utility model provides a feeding device for a thermal film printer.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: a feeding device of a thermal film printer described in the utility model comprises a bottom plate; a printer body is arranged on the bottom plate, a conveying mechanism is arranged in the printer body, and the conveying mechanism is installed on the bottom plate through a fixing member, a plurality of storage mechanisms are arranged on the conveying mechanism along the conveying direction, a storage assembly is arranged at the conveying end of the conveying mechanism, and limited support assemblies are symmetrically arranged on both sides of the conveying mechanism along the conveying direction, and the storage mechanism is located inside the limited support assembly;

[0007] The printer body comprises a conveyor belt, the outer surface of which is evenly distributed with partitions, and the distance between two adjacent partitions is equal to the bottom width of the storage mechanism;

[0008] The position limiting support assembly includes two parallel trusses, and the two trusses are symmetrically arranged on both sides of the conveyor belt, and the storage mechanism is slidably arranged inside the two trusses;

[0009] The storage mechanism includes a storage box, a box cover is rotatably installed in the upper opening of the storage box through a pin shaft, two L-shaped side panels are symmetrically arranged on both sides of the storage mechanism, and the storage mechanism is slidably arranged between two trusses through the two L-shaped side panels, a paper output slot is penetrated by the side of the storage mechanism, and an installation slot is provided at the lower part of the opening of the paper output slot, an anti-slip rubber strip is installed in the installation slot, and the anti-slip rubber strip is located in the storage mechanism, a paper rubbing assembly is installed under the box cover, a lifting assembly is provided at the bottom of the storage box, a signal transmitting module is installed under the lifting assembly, a signal receiving module is installed on the box cover, and the active end of the signal transmitting module is opposite to the signal receiving module, so as to achieve the function of film transportation, and compared with the traditional thermal film printer feeding device, the film storage capacity is larger, which effectively improves the convenience of using the thermal film printer and ensures the continuous supply of film in emergency situations.

[0010] Preferably, a motor No. 1 for driving the conveyor belt is installed on a transmission shaft of the conveyor belt, and the two trusses are parallel to the transmission reverse direction of the conveyor belt, and the cooperation achieves the function of limiting the conveying of the storage mechanism, thereby ensuring the stability of film conveying.

[0011] Preferably, the storage assembly includes a support plate and a U-shaped frame, the U-shaped frame is horizontally arranged, and the support plate is horizontally installed under the U-shaped frame, and the U-shaped opening of the U-shaped frame faces the conveying end of the conveying mechanism, so that the storage mechanism can achieve the storage function and improve the convenience of use.

[0012] Preferably, the paper picking assembly includes two parallel fixed plates, and the two fixed plates are perpendicular to the side of the storage mechanism with a paper outlet slot, and a downward pressure roller is evenly arranged and rotatably installed between the two fixed plates, which cooperates to achieve the effect of pressing the stacked films so as to deliver the films.

[0013] Preferably, a rotating shaft is rotatably installed between the ends of the two fixed plates close to the paper output slot, and two semicircular rubbing plates are symmetrically installed on the rotating shaft. The diameter of the semicircular rubbing plates is larger than the diameter of the lower pressure roller. A No. 2 motor is installed at one end of the rotating shaft, which cooperates to achieve the effect of pushing out the film and ensure the normal printing of the printer.

[0014] Preferably, the lifting assembly includes limiting telescopic rods evenly distributed on the bottom of the box cover, the limiting telescopic rods extend vertically upward and are jointly installed with a lifting plate, springs are sleeved on the outside of the limiting telescopic rods, and the springs are located under the lifting plate, and the lifting plate is penetrated by holes, and the signal transmitting module is installed under the holes opened in the lifting plate, so as to achieve the effect of film lifting.

[0015] Preferably, a stop bar for blocking the lifting plate is symmetrically installed on the side wall of the box cover, a guide rail is symmetrically installed on the inner wall of the box cover, and limiting slide grooves are symmetrically provided on both sides of the lifting plate, and the lifting plate is slidably set on the guide rail through the limiting slide grooves, so as to achieve the sliding limit function of the lifting plate, thereby ensuring the normal lifting of the film for pushing it out.

[0016] Preferably, a rotating lock bar is rotatably installed on the side of the box cover, and a lock buckle for fixing the rotating lock bar is installed on the same side of the storage box body and the rotating lock bar, so that the box cover can be locked and fixed.

[0017] The utility model is beneficial in that:

[0018] 1. The utility model slides a plurality of storage mechanisms on the inner sides of two trusses through L-shaped side plates on both sides thereof. When the storage mechanism moves into the printer body, the No. 1 motor stops running. When the film in the storage mechanism is used up, the light signal emitted by the signal transmitting module will be received by the signal receiving module when there is no obstruction. Under the operation of the No. 1 motor, the storage mechanism with the film stored on the conveyor belt will be sent into the printer body again, thereby achieving the function of film transportation. Compared with the traditional thermal film printer feeding device, the film storage capacity is larger, which effectively improves the convenience of using the thermal film printer and ensures the continuous supply of film in emergency situations.

[0019] 2. The utility model ensures that the top layer of film is always attached to the lower pressure roller in the paper rubbing assembly under the action of the spring. When the semicircular rubbing plate rotates onto the film, it rubs the top layer of film to move toward the paper output slot, and when the film moves, the lower pressure roller will roll along, and the lifting plate will gradually move upward as the film decreases and the spring pushes upward, and will slide on the guide rail through the limiting slide groove, thereby achieving the effect of film delivery and ensuring normal printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0022] Figure 2 is a cutaway enlarged schematic diagram of the first three-dimensional structure;

[0023] Figure 3 It is an enlarged schematic diagram of the main structure of the conveying mechanism;

[0024] Figure 4 It is a cutaway and enlarged schematic diagram of the main structure of the storage mechanism;

[0025] Figure 5 This is an enlarged schematic diagram of the main structure of the paper rubbing component;

[0026] Figure 6 It is a cutaway and enlarged schematic diagram of the main structure of the storage box;

[0027] Figure 7 This is an enlarged schematic diagram of area A in the cutaway diagram of the main structure of the storage box;

[0028] Figure 8 This is an enlarged schematic diagram of the cutaway section of the main structure of the jacking component.

[0029] In the figure: 1. bottom plate; 2. printer body; 3. conveying mechanism; 4. storage mechanism; 5. storage assembly; 6. limit support assembly; 7. conveyor belt; 8. partition; 9. motor No. 1; 10. support plate; 11. U-shaped frame; 12. truss; 13. storage box; 14. box cover; 15. lifting plate; 16. limit slide groove; 17. guide rail; 18. limit telescopic rod; 19. spring; 20. L-shaped side plate; 21. paper output groove; 22. installation groove; 23. anti-slip rubber strip; 24. fixing plate; 25. pressing roller; 26. rotating shaft; 27. semicircular rubbing board; 28. motor No. 2; 29. ​​gear bar; 30. rotating lock bar; 31. lock; 32. signal receiving module; 33. signal transmitting module. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-8As shown, a feeding device for a thermal film printer comprises a bottom plate 1; a printer body 2 is arranged on the bottom plate 1, a conveying mechanism 3 is arranged in the printer body 2, and the conveying mechanism 3 is installed on the bottom plate 1 through a fixing member, a plurality of storage mechanisms 4 are arranged on the conveying mechanism 3 along the conveying direction, a storage assembly 5 is arranged at the conveying end of the conveying mechanism 3, and limited support assemblies 6 are symmetrically arranged on both sides of the conveying mechanism 3 along the conveying direction, and the storage mechanism 4 is located inside the limited support assembly 6;

[0032] The printer body 2 includes a conveyor belt 7, and the outer surface of the conveyor belt 7 is evenly distributed with partitions 8, and the distance between two adjacent partitions 8 is equal to the bottom width of the storage mechanism 4;

[0033] The position limiting support assembly 6 includes two parallel trusses 12, and the two trusses 12 are symmetrically arranged on both sides of the conveyor belt 7, and the storage mechanism 4 is slidably arranged inside the two trusses 12;

[0034] The storage mechanism 4 includes a storage box 13, in which a box cover 14 is rotatably installed in the upper opening of the storage box 13 through a pin shaft, two L-shaped side panels 20 are symmetrically arranged on both sides of the storage mechanism 4, and the storage mechanism 4 is slidably arranged between the two trusses 12 through the two L-shaped side panels 20, a paper outlet slot 21 is penetrated through the side of the storage mechanism 4, and a mounting slot 22 is provided at the lower part of the opening of the paper outlet slot 21, and an anti-slip rubber strip 23 is installed in the mounting slot 22, and the anti-slip rubber strip 23 is located in the storage mechanism 4, a paper picking assembly is installed under the box cover 14, a jacking assembly is arranged at the bottom of the storage box 13, a signal transmitting module 33 is installed under the jacking assembly, a signal receiving module 32 is installed on the box cover 14, and the active end of the signal transmitting module 33 is facing the signal receiving module 32.

[0035] During operation, since the film capacity of the existing printer feeding mechanism is small, the film needs to be frequently replenished during use, which affects the normal printing of the printer, and the continuous printing efficiency is low, resulting in inconvenience in use. In this solution, by storing the films in multiple storage mechanisms 4 respectively, the box cover 14 is flipped open from the storage box body 13 when the films are stored. When the box cover 14 is flipped open, it will drive the paper pickup assembly below it to be flipped out of the storage box body 13, and then the films are stacked and placed on the lifting assembly, and then the film is pressed downward and the box cover 14 is flipped and buckled on the storage box body 13. At this time, under the downward pressure of the paper pickup assembly, the film will push the lifting assembly to move downward, and then The box cover 14 is locked on the storage box body 13. Under the continuous lifting of the lifting assembly, the film will always be attached to the paper picking assembly, and the light signal emitted by the signal transmitting module 33 cannot be transmitted to the signal receiving module 32 due to the obstruction of the film. A plurality of storage mechanisms 4 are slidably arranged on the inner side of the two trusses 12 through the L-shaped side panels 20 on both sides thereof, and the storage mechanisms 4 are placed so that they are stuck between two adjacent partitions 8. The conveyor belt 7 is driven by the No. 1 motor 9 to operate. When the conveyor belt 7 is running, it will drive the partition 8 to move along its transmission direction, and when the partition 8 moves, it will push the storage mechanism 4 to move in its transmission direction, and the storage mechanism 4 will pass through the L-shaped side panels 20 on both sides thereof. The side plate 20 slides toward the printer body 2 on the two trusses 12. When the storage mechanism 4 moves into the printer body 2, the No. 1 motor 9 stops running. When printing, the film is sent out from the paper output slot 21 through the paper pickup assembly. When the upper film is sent out and drives the lower film to move, it will be blocked by the anti-slip rubber strip 23, so that only the upper film can be sent out from the paper output slot 21. The sent film then enters the printer body 2 for printing. When the film in the storage mechanism 4 is used up, the light signal emitted by the signal transmitting module 33 will be received by the signal receiving module 32 when it loses the obstruction, and the signal receiving module 32 located in the printer body 2 will transmit the signal to the printer body. 2, the printer body 2 controls the No. 1 motor 9 to operate after receiving the signal. At this time, the storage mechanism 4 with the film stored on the conveyor belt 7 will be sent into the printer body 2 again under the operation of the No. 1 motor 9, and the storage mechanism 4 that has used up the film will be pushed into the storage component 5 by the later storage mechanism 4 for storage. When the operator is free, he can put the film into the storage mechanism 4 in the storage component 5 and then put it into the conveying mechanism 3 for film storage, which achieves the function of film transportation. Compared with the traditional thermal film printer feeding device, the film storage capacity is larger, which effectively improves the convenience of using the thermal film printer and ensures the continuous supply of film in emergency situations.

[0036] A motor 9 for driving the conveyor belt 7 is installed on a transmission shaft of the conveyor belt 7 , and the two trusses 12 are parallel to the transmission reverse direction of the conveyor belt 7 .

[0037] The storage assembly 5 includes a support plate 10 and a U-shaped frame 11 . The U-shaped frame 11 is horizontally arranged, and the support plate 10 is horizontally installed under the U-shaped frame 11 . The U-shaped opening of the U-shaped frame 11 faces the conveying end of the conveying mechanism 3 .

[0038] See also Figure 4-8 As shown, the paper pickup assembly includes two parallel fixed plates 24 , and the two fixed plates 24 are perpendicular to the side of the storage mechanism 4 with the paper outlet slot 21 , and a pressing roller 25 is evenly arranged and rotatably installed between the two fixed plates 24 .

[0039] A rotating shaft 26 is rotatably installed between the ends of the two fixed plates 24 close to the paper output slot 21, and two semicircular rubbing plates 27 are symmetrically installed on the rotating shaft 26. The diameter of the semicircular rubbing plates 27 is larger than the diameter of the lower pressure roller 25, and a second motor 28 is installed at one end of the rotating shaft 26.

[0040] The lifting assembly includes limiting telescopic rods 18 evenly distributed at the bottom of the box cover 14. The limiting telescopic rods 18 extend vertically upward and are jointly installed with a lifting plate 15. Springs 19 are sleeved on the outer sides of the limiting telescopic rods 18, and the springs 19 are located under the lifting plate 15. A hole is opened through the lifting plate 15, and the signal transmitting module 33 is installed under the hole opened in the lifting plate 15.

[0041] The side walls of the box cover 14 are symmetrically provided with stop bars 29 for blocking the lifting plate 15 , and the inner side walls of the box cover 14 are symmetrically provided with guide rails 17 . The lifting plate 15 is symmetrically provided with limiting slide grooves 16 on both sides, and the lifting plate 15 is slidably arranged on the guide rails 17 through the limiting slide grooves 16 .

[0042] A rotating lock bar 30 is rotatably mounted on the side of the box cover 14 , and a lock buckle 31 for fixing the rotating lock bar 30 is mounted on the same side of the storage box body 13 and the rotating lock bar 30 .

[0043] During operation, in order to ensure the normal supply of films and to ensure that the films can be discharged from the storage mechanism normally, in this solution, in the initial state, the spring 19 will always push the lifting plate 15 upward, so that the lifting plate 15 will always fit under the stop bar 29. When the films are placed in the storage box 13 and pressed downward, the spring 19 will shrink, and after the box cover 14 is buckled on the storage box 13, when the box cover 14 is closed on the storage box 13, the rotating lock bar 30 can be rotated and locked into the lock buckle 31 to fix it. The paper pickup assembly will be against the stacked films, and under the action of the spring 19, the uppermost film will always fit the downward pressure roller 2 in the paper pickup assembly. 5, when the film is pushed, the second motor 28 drives the rotating shaft 26 to rotate, and when the rotating shaft 26 rotates, it drives the semicircular rubbing plate 27 to rotate around the rotating shaft 26 as the axis, and the diameter of the semicircular rubbing plate 27 is larger than the diameter of the pressing roller 25. When the semicircular rubbing plate 27 rotates onto the film, it rubs the top layer of the film to move toward the paper output slot 21, and when the film moves, the pressing roller 25 will roll along, and the lifting plate 15 will gradually move upward with the reduction of the film and the upward push of the spring 19, and will slide on the guide rail 17 through the limiting slide groove 16, so as to achieve the effect of film delivery and ensure the normal printing work.

[0044] The working principle is that the films are stored in a plurality of storage mechanisms 4 respectively. When the films are stored, the box cover 14 is flipped open from the storage box body 13. When the box cover 14 is flipped open, the paper pickup assembly below it is driven to be flipped out of the storage box body 13. Then, the films are stacked and placed on the lifting assembly. Then, the films are pressed downward and the box cover 14 is flipped and buckled on the storage box body 13. At this time, under the downward pressure of the paper pickup assembly, the films will push the lifting assembly to move downward, and then the box cover 14 will be locked on the storage box body 13. Under the continuous lifting of the lifting assembly, the films will always fit under the paper pickup assembly, and under the obstruction of the film, the signal The optical signal emitted by the signal transmitting module 33 cannot be transmitted to the signal receiving module 32, and the plurality of storage mechanisms 4 are slidably arranged on the inner sides of the two trusses 12 through the L-shaped side plates 20 on both sides thereof, and when the storage mechanism 4 is placed, it is clamped between two adjacent partitions 8, and the conveyor belt 7 is driven to operate by the No. 1 motor 9. When the conveyor belt 7 operates, it drives the partition 8 to move along its transmission direction, and when the partition 8 moves, it pushes the storage mechanism 4 to move in its transmission direction, and the storage mechanism 4 slides toward the printer body 2 on the two trusses 12 through the L-shaped side plates 20 on both sides thereof. When the storage mechanism 4 moves to the printer body 2, When the film in the storage mechanism 4 is used up, the light signal emitted by the signal transmitting module 33 will be received by the signal receiving module 32 when the light signal is lost. The signal receiving module 32 located in the printer main body 2 will transmit the signal to the printer main body 2. After receiving the signal, the printer main body 2 will control When the No. 1 motor 9 is running, the storage mechanism 4 with the film on the conveyor belt 7 will be sent into the printer body 2 again under the operation of the No. 1 motor 9, and the storage mechanism 4 with the used film will be pushed into the storage assembly 5 by the later storage mechanism 4 for storage. When the operator is free, he can put the film into the storage mechanism 4 in the storage assembly 5 and then put it into the conveying mechanism 3 for film storage, thereby achieving the function of film transportation. Compared with the traditional thermal film printer feeding device, the film storage capacity is larger, which effectively improves the convenience of using the thermal film printer and ensures the continuous supply of film in emergency situations.

[0045] In the initial state, the spring 19 will always push the lifting plate 15 upward, so that the lifting plate 15 is always attached to the stop bar 29. When the film is placed in the storage box 13 and pressed downward, the spring 19 will shrink. After the box cover 14 is buckled on the storage box 13, the box cover 14 is closed on the storage box 13 by rotating the rotating lock bar 30 and locking it into the lock buckle 31 to fix it. The paper pickup assembly will be against the stacked films, and under the action of the spring 19, the top layer of film will always be attached to the downward pressure roller 25 in the paper pickup assembly. When the film is pushed, the second motor 28 drives the belt The rotating shaft 26 rotates, and when the rotating shaft 26 rotates, it will drive the semicircular rubbing plate 27 to rotate around the rotating shaft 26 as the axis. The diameter of the semicircular rubbing plate 27 is larger than the diameter of the pressing roller 25. When the semicircular rubbing plate 27 rotates onto the film, it will rub the uppermost film to move toward the paper output slot 21, and when the film moves, the pressing roller 25 will roll along, and the lifting plate 15 will gradually move upward with the reduction of the film and the upward push of the spring 19, and will slide on the guide rail 17 through the limiting slide groove 16, so as to achieve the effect of film delivery and ensure the normal printing work.

[0046] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A feeding device for a thermal film printer, characterized in that: The invention comprises a bottom plate (1); a printer body (2) is arranged on the bottom plate (1); a conveying mechanism (3) is arranged in the printer body (2) and is penetrated by the conveying mechanism (3); the conveying mechanism (3) is mounted on the bottom plate (1) through a fixing member; a plurality of storage mechanisms (4) are arranged on the conveying mechanism (3) along the conveying direction; a storage assembly (5) is arranged at the conveying end of the conveying mechanism (3); limited support assemblies (6) are symmetrically arranged on both sides of the conveying mechanism (3) along the conveying direction; and the storage mechanism (4) is located on the inner side of the limited support assembly (6); The printer body (2) comprises a conveyor belt (7), the outer surface of which is evenly distributed with partitions (8), and the distance between two adjacent partitions (8) is equal to the bottom width of the storage mechanism (4); The position limiting support assembly (6) comprises two parallel trusses (12), and the two trusses (12) are symmetrically arranged on both sides of the conveyor belt (7), and the storage mechanism (4) is slidably arranged inside the two trusses (12); The storage mechanism (4) comprises a storage box (13), a box cover (14) is rotatably installed in the upper opening of the storage box (13) through a pin shaft, two L-shaped side plates (20) are symmetrically arranged on both sides of the storage mechanism (4), and the storage mechanism (4) is slidably arranged between the two trusses (12) through the two L-shaped side plates (20), a paper discharge slot (21) is arranged through the side of the storage mechanism (4), a mounting slot (22) is arranged at the lower part of the opening of the paper discharge slot (21), an anti-slip rubber strip (23) is installed in the mounting slot (22), and the anti-slip rubber strip (23) is located in the storage mechanism (4), a paper picking assembly is installed under the box cover (14), a lifting assembly is arranged at the bottom of the storage box (13), a signal transmitting module (33) is installed under the lifting assembly, a signal receiving module (32) is installed on the box cover (14), and the action end of the signal transmitting module (33) is directly opposite to the signal receiving module (32).

2. A feeding device for a thermal film printer according to claim 1, characterized in that: A motor (9) for driving the conveyor belt (7) is installed on a transmission shaft of the conveyor belt (7), and the two trusses (12) are parallel to the transmission reverse direction of the conveyor belt (7).

3. A feeding device for a thermal film printer according to claim 1, characterized in that: The storage assembly (5) comprises a support plate (10) and a U-shaped frame (11); the U-shaped frame (11) is arranged horizontally, and the support plate (10) is installed horizontally under the U-shaped frame (11); the U-shaped opening of the U-shaped frame (11) faces the conveying end of the conveying mechanism (3).

4. A feeding device for a thermal film printer according to claim 1, characterized in that: The paper pickup assembly comprises two fixed plates (24) arranged in parallel, and the two fixed plates (24) are perpendicular to the side of the storage mechanism (4) on which the paper outlet slot (21) is provided, and a pressing roller (25) is evenly arranged and rotatably installed between the two fixed plates (24).

5. A feeding device for a thermal film printer according to claim 4, characterized in that: A rotating shaft (26) is rotatably mounted between the ends of the two fixed plates (24) close to the paper outlet slot (21), and two semicircular rubbing plates (27) are symmetrically mounted on the rotating shaft (26). The diameter of the semicircular rubbing plates (27) is larger than the diameter of the lower pressure roller (25), and a second motor (28) is mounted on one end of the rotating shaft (26).

6. A feeding device for a thermal film printer according to claim 5, characterized in that: The lifting assembly comprises limiting telescopic rods (18) evenly distributed at the bottom of the box cover (14); the limiting telescopic rods (18) extend vertically upward and are jointly installed with a lifting plate (15); springs (19) are sleeved on the outer sides of the limiting telescopic rods (18), and the springs (19) are located under the lifting plate (15); a hole is penetrated through the lifting plate (15), and the signal transmitting module (33) is installed under the hole opened in the lifting plate (15).

7. A feeding device for a thermal film printer according to claim 5, characterized in that: The side walls of the box cover (14) are symmetrically provided with stop bars (29) for blocking the lifting plate (15); the inner side walls of the box cover (14) are symmetrically provided with guide rails (17); limiting slide grooves (16) are symmetrically provided on both sides of the lifting plate (15); and the lifting plate (15) is slidably arranged on the guide rails (17) through the limiting slide grooves (16).

8. A feeding device for a thermal film printer according to claim 1, characterized in that: A rotating lock bar (30) is rotatably mounted on the side of the box cover (14), and a lock buckle (31) for fixing the rotating lock bar (30) is mounted on the same side of the storage box body (13) and the rotating lock bar (30).

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