Heat recovery printer

Abstract

The utility model relates to a heat recovery printer, and relates to the technical field of printing devices, the heat recovery printer comprises a printer shell, a heat recovery mechanism, a printing mechanism and a lifting mechanism, and the heat recovery mechanism comprises a ventilation shell, a cross-flow wind wheel, a wind wheel driving motor and a heat recovery pipeline. The ventilation shell is fixed to the top of the printer shell, the cross-flow wind wheel in the ventilation shell is driven by the wind wheel driving motor to rotate, and hot air circulation and heat dissipation in the printer are facilitated. The heat conduction groove is designed in the side face of the printer shell, and heat generated in the printing process is effectively guided into the heat recovery pipeline. And the heat recovery pipeline covers the heat conduction groove, recovers heat and guides the heat into the paper storage cavity to preheat the paper and keep the paper dry, so that the paper is prevented from being affected with damp, mildewed, jammed and the like.

Description

Technical Field

[0001] The present application relates to the technical field of printing devices, and in particular to a heat recovery printer. Background Art

[0002] In the field of office equipment, printer performance and functionality are crucial. Especially in humid environments, paper humidity issues become a key factor affecting the normal operation of printers. Wet paper is not only prone to mold, but can also cause problems such as paper jams, which can greatly reduce work efficiency and print quality. Existing traditional printers do not have paper heating functions, and this problem can usually only be addressed by improving the working environment, increasing paper pre-treatment, etc. However, these methods often cannot fundamentally solve the problem of paper drying, especially in high humidity environments, where paper becomes seriously damp and moldy. Excessive paper humidity will cause the printing paper to lose its toughness, making it easy for problems such as paper jams to occur during the printing process, reducing office efficiency. Utility Model Content

[0003] In order to avoid problems such as paper getting damp, moldy, and paper jams, the present application provides a heat recovery printer.

[0004] This application provides a heat recovery printer, which adopts the following technical solution:

[0005] A heat recovery printer includes a printer housing, a heat recovery mechanism, a printing mechanism and a lifting mechanism. The heat recovery mechanism includes a ventilation shell, which is fixedly arranged on the top of the printer housing. A ventilation component is arranged in the ventilation shell. The ventilation component includes a cross-flow fan and a fan drive motor. The cross-flow fan is rotatably arranged inside the ventilation shell. The fan drive motor is fixedly arranged in the ventilation shell and is connected to the cross-flow fan. A through groove is opened on the side of the printer housing to form a heat conduction groove. The heat conduction groove is opened at the position corresponding to the printing cavity and is connected to the printing cavity. The heat recovery mechanism also It includes a heat recovery pipe, which is fixed to the side wall of the printer housing by bolts. The heat recovery pipe covers the heat conduction groove inside the pipe. A groove is opened at the bottom of the printer housing to form a paper slot. A partition is set in the paper slot. The partition divides the paper slot into a paper storage cavity and a lifting cavity. The two opposite side walls of the paper storage cavity are provided with air inlet and exhaust holes. The air inlet and exhaust holes are composed of multiple through grooves opened on the side walls. The other end of the heat recovery pipe is fixedly connected to the side wall of the paper storage cavity on the side where the air inlet is opened. The heat recovery pipe covers the air inlet inside the pipe.

[0006] By adopting the above technical solution, the heat recovery mechanism on the top of the printer housing is fixed with a ventilation shell, which is equipped with a cross-flow impeller and an impeller drive motor. Its rotation design helps to circulate and dissipate heat inside the printer. The heat conduction groove design on the side of the printer housing effectively guides the heat generated during the printing process into the heat recovery pipe. The heat recovery pipe is fixed to the side wall of the printer housing, and the heat conduction groove is covered inside the pipe, which effectively utilizes the heat energy generated when the printer is working. This design not only recycles and utilizes heat energy, but also reduces the convective loss of heat energy, and recovers heat to a great extent. The air inlet of the paper storage chamber is connected to the heat recovery pipe. When the hot air enters the paper storage chamber through the heat recovery pipe, it provides preheating for the paper, so that the hot air in the entire paper storage chamber circulates, dries the paper, and keeps the paper dry.

[0007] In a specific implementation scheme, a paper outlet is provided at the top of the printer housing, a paper inlet is provided inside the paper slot, and a cavity is further provided inside the printer housing to form a printing cavity, wherein the top and bottom of the printing cavity are respectively connected to the paper outlet and the paper inlet.

[0008] By adopting the above technical solution, the design of the paper outlet and paper inlet on the top of the printer housing allows for smooth paper in and out, and combined with the printing cavity, the printing process is made more efficient.

[0009] In a specific possible implementation scheme, the printing mechanism includes a printing roller, an intermediate roller and a paper pickup wheel. The paper pickup wheel is rotatably arranged at the paper inlet, and the printing roller is rotatably arranged at the paper outlet. The paper pickup wheel and the printing roller are both driven by a servo motor, and the intermediate roller is rotatably arranged between the printing roller and the paper pickup wheel.

[0010] By adopting the above technical solution, the combined design of the printing roller, the intermediate roller and the pickup roller, driven by the servo motor, ensures the accuracy and speed of printing.

[0011] In a specific feasible implementation scheme, an air inlet is provided at the top of the ventilation shell, the air inlet is opened along the length direction of the cross-flow impeller, an air intake grille is fixedly installed at the air inlet, and an air outlet connected to the printing cavity is provided at the bottom of the ventilation shell.

[0012] By adopting this technical solution, the design of the ventilation housing's air inlet and outlet ensures efficient ventilation within the printer. The air inlet grille prevents foreign matter from entering and helps evenly distribute airflow. The air outlet is connected to the printing chamber, ensuring air circulation during printing and facilitating heat dissipation.

[0013] In a specific feasible implementation scheme, the lifting mechanism is arranged in the lifting cavity, and the lifting mechanism includes a fixed chain plate and a sliding chain plate. The fixed chain plate is fixedly arranged on the top of the partition. The fixed chain plate and the sliding chain plate are both bent and provided with buckles. The buckles are provided as metal plates bent from both ends of the fixed chain plate and the sliding chain plate to the middle. The sliding chain plate is slidably arranged on the fixed chain plate through the buckle, and a grid plate is fixed to the end of the buckle away from the sliding chain plate by screws.

[0014] By adopting the above technical solution, the lifting mechanism adopts a combination of fixed chain plates and sliding chain plates, and the structural design of the buckle realizes the smooth sliding of the sliding chain plates on the fixed chain plates.

[0015] In a specific possible implementation scheme, the lifting mechanism further includes a fixed seat, which is fixedly arranged in the lifting cavity. The lifting mechanism further includes a drive shaft and a screw, and the drive shaft is rotatably arranged on the fixed seat.

[0016] In one specific embodiment, the combination of the fixed base, the drive shaft, and the screw achieves the lifting and lowering function of the grid plate through the screw thread movement and the rotation of the drive shaft. This arrangement ensures accurate paper delivery and enables the printed paper on each grid plate to be discharged.

[0017] In a specific feasible implementation scheme, driving bevel gears are fixedly provided at both ends of the driving shaft, and two screws are provided. The screws are arranged perpendicularly to the driving shaft, one end of the screw is arranged in the lifting cavity, and the other end extends into the paper storage cavity. The two screws are rotatably installed on the fixed seat, and a transmission bevel gear is fixedly provided at one end of the screw close to the driving shaft, and the driving bevel gear is meshed with the transmission bevel gear.

[0018] By adopting the above technical solution, the meshing design of the driving bevel gear and the transmission bevel gear enables power to be transmitted from the driving shaft to the screw, thereby driving the lifting of the paper.

[0019] In a specific possible implementation scheme, each thread on the two screw rods is provided with a thread block, the thread block is fixedly connected to a frame, and the frame is fixedly connected to the sliding chain.

[0020] By adopting the above technical solution, the design of the thread blocks and the skeleton on the two screws ensures the stability and flatness of the paper during the lifting process.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The heat recovery mechanism effectively utilizes the heat energy generated during the operation of the printer. The heat recovery mechanism includes a ventilation housing, a crossflow impeller, an impeller drive motor, and a heat recovery pipe. The ventilation housing is fixed to the top of the printer housing, and the crossflow impeller inside it rotates driven by the impeller drive motor, which helps to circulate hot air and dissipate heat inside the printer. The heat conduction groove is designed on the side of the printer housing to effectively guide the heat generated during the printing process to the heat recovery pipe. The heat recovery pipe covers the heat conduction groove, recovers the heat and guides it into the paper storage cavity to preheat the paper and keep the paper dry, thereby avoiding problems such as paper moisture, mold, and paper jams.

[0023] 2. The lifting mechanism, located within the paper trough's lifting chamber, comprises a fixed chain, sliding chain, buckle, grid plate, fixed base, drive shaft, and screw. The fixed chain is secured to the top of the partition, while the sliding chain slides onto the fixed chain via the buckle. The drive shaft, driven by a rotary motor, rotates, and the screw's threaded motion raises and lowers the grid plate. During operation, the drive shaft and screw work together to drive the grid plate upward and downward, ensuring accurate paper delivery and layered drying. This maximizes ventilation and improves the final drying result. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present application;

[0025] Figure 2 It is a schematic diagram of the specific structure inside the ventilation shell;

[0026] Figure 3 It is a schematic diagram of the specific structure of the air intake hole and the heat conduction groove;

[0027] Figure 4 This is a schematic diagram of the specific structure inside the printer housing;

[0028] Figure 5 This is a schematic diagram of the paper slot and paper feed position;

[0029] Figure 6 and Figure 7 It is a schematic diagram of the specific structure of the lifting mechanism.

[0030] Explanation of the accompanying symbols: 1. Printer housing; 2. Paper slot; 11. Paper feed port; 12. Air inlet; 13. Exhaust hole; 21. Partition; 22. Paper storage chamber; 221. Grid plate; 23. Lifting chamber; 41. Frame; 42. Fixed chain; 421. Buckle; 44. Fixed seat; 45. Sliding chain; 46. Screw; 461. Transmission bevel gear; 47. Drive shaft; 471. Drive bevel gear; 48. Threaded block; 24. Paper slot cover; 3. Printing chamber; 31. Printing roller; 32. Intermediate roller; 33. Paper pickup roller; 15. Heat conduction groove; 16. Paper outlet; 51. Heat recovery duct; 5. Ventilation shell; 52. Crossflow impeller; 53. Impeller drive motor; 54. Air inlet; 55. Air intake grille; 56. Air outlet DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] The present application embodiment discloses a heat recovery printer, referring to Figure 1 and Figure 2 , including a printer housing 1, a heat recovery mechanism, a printing mechanism and a lifting mechanism.

[0034] The top of the printer housing 1 defines a paper outlet 16. The bottom of the printer housing 1 defines a groove forming a paper trough 2, which contains a paper inlet 11. A cavity is also defined within the printer housing 1, forming a printing chamber 3. The top and bottom of the printing chamber 3 are connected to the paper outlet 16 and the paper inlet 11, respectively. The printing mechanism is disposed within the printing chamber 3 between the paper inlet 11 and the paper outlet 16. The printing mechanism includes a printing roller 31, an intermediate roller 32, and a pickup roller 33. The pickup roller 33 is rotatably disposed at the paper inlet 11, while the printing roller 31 is rotatably disposed at the paper outlet 16. Both the pickup roller 33 and the printing roller 31 are driven by servo motors. The intermediate roller 32 is rotatably disposed between the printing roller 31 and the pickup roller 33 and is used to transfer the printed paper.

[0035] Reference Figure 3 and Figure 5The heat recovery mechanism includes a ventilation shell 5, which is fixedly arranged on the top of the printer housing 1 and is adjacent to the paper outlet 16. A ventilation assembly is arranged in the ventilation shell 5, and the ventilation assembly includes a cross-flow fan 52 and a fan drive motor 53. The cross-flow fan 52 is rotatably arranged inside the ventilation shell 5, and the fan drive motor 53 is fixedly arranged in the ventilation shell 5 and is transmission-connected to the cross-flow fan 52. An air inlet 54 is provided at the top of the ventilation shell 5, and the air inlet 54 is opened along the length direction of the cross-flow fan 52. An air intake grille 55 is fixedly provided at the air inlet 54. An air outlet 56 connected to the printing chamber 3 is provided at the bottom of the ventilation shell 5. The cross-flow fan 52 is driven by the fan drive motor 53 to rotate inside the ventilation shell 5, and the external air flow is sent into the printing chamber 3 through the air outlet 56.

[0036] The side of the printer housing 1 is provided with a through-groove forming a heat conduction groove 15. The heat conduction groove 15 is positioned corresponding to and communicates with the printing cavity 3. Airflow introduced into the printing cavity 3 via the crossflow impeller 52 can be discharged from the printing cavity 3 through the heat conduction groove 15. The printing roller 31 generates a large amount of heat during printing, which is carried away by the passing airflow. The heat recovery mechanism also includes a heat recovery duct 51, which is bolted to the side wall of the printer housing 1. The heat recovery duct 51 covers the heat conduction groove 15 within the duct, and the airflow exiting the heat conduction groove 15 flows into the heat recovery duct 51.

[0037] Reference Figure 5 、 Figure 6 and Figure 7 A partition 21 is provided within the paper trough 2, separating the upper and lower sections of the paper trough 2 into a paper storage chamber 22 and a lifting chamber 23. A gap is reserved between the ends of the partition 21 and the inner wall of the paper trough 2, allowing the paper storage chamber 22 and the lifting chamber 23 to communicate with each other. The paper storage chamber 22 is connected to the printing chamber via the paper inlet 11. The two opposing side walls of the paper storage chamber 22 are provided with an air inlet 12 and an air outlet 13, each consisting of multiple through-grooves formed in the side walls. The other end of the heat recovery duct 51 is fixedly connected to the side wall of the paper storage chamber 22 on the side where the air inlet 12 is provided. The heat recovery duct 51 covers the air inlet 12 and directs the hot air from the printing chamber 3 into the paper storage chamber 22 through the heat recovery duct 51 and exhausts it through the air outlet 13, thus completing a hot air cycle. A paper trough 2 cover is also provided at the opening of the paper trough 2 to seal the paper trough 2.

[0038] The lifting mechanism is arranged in the lifting chamber 23 and includes a fixed chain piece 42 and a sliding chain piece 45. There are multiple fixed chain pieces 42 and multiple sliding chain pieces 45. The fixed chain piece 42 is fixedly arranged on the top of the partition 21. In the embodiment of the present application, two fixed chain pieces 42 are respectively provided at two opposite ends of the partition 21. The fixed chain piece 42 and the sliding chain piece 45 are both bent and provided with a buckle 421. The buckle 421 is provided as a metal piece bent from both ends of the fixed chain piece 42 and the sliding chain piece 45 to the middle. The sliding chain piece 45 is slidably arranged on the fixed chain piece 42 through the buckle 421. The end of the buckle 421 away from the sliding chain piece 45 is fixed with a grid plate 221 by a screw. The lifting effect of the grid plate 221 is achieved by the relative sliding of the fixed chain piece 42 and the sliding chain piece 45. The number of grid plates 221 layers can be set as needed, with one grid plate 221 corresponding to each sliding chain 45. The sliding chains 45 can be stacked and slid together using the latches 421. The upper sliding chain 45 is smaller than the lower sliding chain 45. In this embodiment, two grid plates 221 are provided, and two sliding chains 45 are provided. Each layer of grid plates 221 is used to hold printed paper. The layered arrangement of the grid plates 221 facilitates ventilation of the printed paper, allowing the hot air to fully dry the printed paper.

[0039] The lifting mechanism also includes a fixed seat 44, which is fixedly arranged in the lifting chamber 23. The lifting mechanism also includes a drive shaft 47 and a screw 46. The drive shaft 47 is rotatably arranged on the fixed seat 44, and the drive shaft 47 is driven to rotate by the rotary motor. Drive bevel gears 471 are fixedly arranged at both ends of the drive shaft 47. Two screws 46 are provided, which are arranged at both ends of the drive shaft 47 along the length direction of the drive shaft 47, and the screws 46 are arranged perpendicular to the drive shaft 47. One end of the screw 46 is arranged in the lifting chamber 23, and the other end extends into the paper storage chamber 22 through the gap between the partition 21 and the inner wall of the paper slot 2. The two screws 46 are rotatably mounted on the fixed seat 44. A transmission bevel gear 461 is fixedly arranged on the end of the screw 46 close to the drive shaft 47. The drive bevel gear 471 is meshed with the transmission bevel gear 461, so that when the drive shaft 47 rotates, it can be driven by the drive bevel gear 471 and the transmission bevel gear 461 to rotate the screw 46. Each thread of the two screw rods 46 is provided with a threaded block 48. The threaded block 48 and the screw rod 46 form a screw structure. When the screw rod 46 rotates, the threaded block 48 can be raised and lowered along the screw rod 46. The threaded block 48 is fixedly connected to the frame 41. The frame 41 is configured as a metal sheet and is fixedly connected to the topmost sliding chain 45. Specifically, the frame 41 is threadedly fixed to the buckle 421 by screws. This configuration enables the sliding chain 45 to move up and down when the threaded block 48 moves up and down.

[0040] The lifting mechanism drives the grid plate 221 to move up and down, so that the printed paper on each grid plate 221 can be aligned with the paper inlet 11, and the paper discharge operation of each grid plate 221 is completed by the pickup roller 33.

[0041] The implementation principle of the embodiment of the present application is as follows: by comprehensively utilizing a heat recovery mechanism, a printing mechanism, and a lifting mechanism, the printer recovers heat energy and dries the paper. First, the heat recovery mechanism draws in external airflow through the rotation of the crossflow impeller 52 and delivers it into the printing chamber 3 through the air outlet 56. During the printing process, the heat generated by the printing roller 31 is carried away by the airflow and discharged through the heat conduction groove 15 and the heat recovery pipe 51. The hot air flow is introduced into the paper storage chamber 22 through the heat recovery pipe 51, forming a hot air circulation. The hot air entering the paper storage chamber 22 blows onto the printed paper on each layer of the grid plate 221, drying the paper. The multiple circular through-holes of the air inlet 12 and the exhaust 13 enable the airflow to be more evenly distributed within the paper storage chamber 22, thereby improving the efficiency of the hot air circulation and preventing the hot air from blowing the printed paper up. When printing is required, the grid plate 221 is moved downward by driving the drive shaft 47 to rotate, and the paper pickup roller 33 starts working, pulling the paper from the grid plate 221 and feeding it into the printing mechanism for printing. After completing printing of one layer of paper, the driving shaft 47 is controlled again to move the grid plate 221 upward one grid, and the paper on the next layer of grid plate 221 is moved to the position of the paper feed port 11. Repeating the above operation can realize continuous printing operation.

[0042] The above-described embodiments merely represent implementation methods of the utility model. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the utility model, and these modifications would fall within the scope of protection of the utility model. Therefore, any equivalent changes based on the structure, shape, and principle of the present application would be encompassed within the scope of protection of the present application.

Claims

1. A heat recovery printer, characterized in that: The invention comprises a printer housing (1), a heat recovery mechanism, a printing mechanism and a lifting mechanism, wherein the heat recovery mechanism comprises a ventilation shell (5), the ventilation shell (5) is fixedly arranged on the top of the printer housing (1), a ventilation component is arranged in the ventilation shell (5), and the ventilation component comprises a cross-flow wind wheel (52) and a wind wheel driving motor (53), the cross-flow wind wheel (52) is rotatably arranged inside the ventilation shell (5), the wind wheel driving motor (53) is fixedly arranged in the ventilation shell (5) and is transmission-connected to the cross-flow wind wheel (52), a through groove is opened on the side of the printer housing (1) to form a heat conduction groove (15), the heat conduction groove (15) is opened at the position corresponding to the printing cavity (3) and is connected to the printing cavity (3), the heat recovery mechanism also comprises a heat recovery pipe (51), the heat recovery pipe (5 1) is fixedly arranged on the side wall of the printer housing (1) by bolts, the heat recovery pipe (51) covers the heat conduction groove (15) inside the pipe, the bottom of the printer housing (1) is provided with a groove to form a paper groove (2), a partition (21) is provided in the paper groove (2), the partition (21) separates the paper groove (2) into a paper storage cavity (22) and a lifting cavity (23) at the top and bottom, the two opposite side walls of the paper storage cavity (22) are provided with an air inlet (12) and an exhaust hole (13), the air inlet hole (12) and the exhaust hole (13) are both composed of a plurality of through grooves provided on the side wall, the other end of the heat recovery pipe (51) is fixedly connected to the side wall of the paper storage cavity (22) on the side where the air inlet hole (12) is provided, and the heat recovery pipe (51) covers the air inlet hole (12) inside the pipe.

2. The heat recovery printer according to claim 1, characterized in that: The top of the printer housing (1) is provided with a paper outlet (16), the inside of the paper slot (2) is provided with a paper inlet (11), and a cavity is further provided in the printer housing (1) to form a printing cavity (3), the top and bottom of the printing cavity (3) are respectively connected to the paper outlet (16) and the paper inlet (11).

3. The heat recovery printer according to claim 2, characterized in that: The printing mechanism comprises a printing roller (31), an intermediate roller (32) and a pickup roller (33); the pickup roller (33) is rotatably arranged at the paper inlet (11); the printing roller (31) is rotatably arranged at the paper outlet (16); the pickup roller (33) and the printing roller (31) are both driven by a servo motor; the intermediate roller (32) is rotatably arranged between the printing roller (31) and the pickup roller (33).

4. The heat recovery printer according to claim 1, characterized in that: An air inlet (54) is provided at the top of the ventilation housing (5), and the air inlet (54) is provided along the length direction of the cross-flow impeller (52). An air intake grille (55) is fixedly provided at the air inlet (54). An air outlet (56) connected to the printing chamber (3) is provided at the bottom of the ventilation housing (5).

5. The heat recovery printer according to claim 1, characterized in that: The lifting mechanism is arranged in the lifting cavity (23), and comprises a fixed chain piece (42) and a sliding chain piece (45). The fixed chain piece (42) is fixedly arranged on the top of the partition (21). The fixed chain piece (42) and the sliding chain piece (45) are both bent and provided with a buckle (421). The buckle (421) is provided as a metal piece bent from both ends of the fixed chain piece (42) and the sliding chain piece (45) to the middle. The sliding chain piece (45) is slidably arranged on the fixed chain piece (42) through the buckle (421). The end of the buckle (421) away from the sliding chain piece (45) is fixed with a grid plate (221) by a screw.

6. The heat recovery printer according to claim 5, characterized in that: The lifting mechanism further comprises a fixed seat (44), which is fixedly arranged in the lifting chamber (23). The lifting mechanism further comprises a driving shaft (47) and a screw (46), and the driving shaft (47) is rotatably arranged on the fixed seat (44).

7. The heat recovery printer according to claim 6, characterized in that: A driving bevel gear (471) is fixedly provided at both ends of the driving shaft (47), two screw rods (46) are provided, and the screw rods (46) are arranged perpendicularly to the driving shaft (47), one end of the screw rod (46) is arranged in the lifting chamber (23), and the other end extends into the paper storage chamber (22), and the two screw rods (46) are rotatably mounted on the fixed seat (44), and a transmission bevel gear (461) is fixedly provided at one end of the screw rod (46) close to the driving shaft (47), and the driving bevel gear (471) is meshed with the transmission bevel gear (461).

8. The heat recovery printer according to claim 7, characterized in that: Each thread on the two screw rods (46) is provided with a thread block (48), the thread block (48) is fixedly connected to a frame (41), and the frame (41) is fixedly connected to the sliding chain plate (45).

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