A hotel invoice printer for business travel services and its usage method

Abstract

The present invention relates to the technical field of printers. The present invention discloses a hotel invoice printer for business travel services and its usage method; four third limit blocks are fixedly connected to the connecting plate; each third limit block is provided with an inclined surface portion; a cutting assembly is connected to the connecting plate; during use, by making the rear side of the through groove an isosceles trapezoid, the end of the paper roll is limited and guided, making it easier to pass through the through groove. At the same time, two nozzles deliver obliquely forward airflows to the upper and lower sides of the end of the paper roll, so that the dispersed ends of the paper roll are reattached, enabling it to smoothly pass through the through groove, avoiding the problem that the end of the paper roll cannot penetrate into the through groove due to the dispersion of the end of the paper roll. During the winding process of the end of the spare paper roll by the third round rod, the glue is sandwiched between the layers of waste paper circles through the glue applicator to stick them tightly, avoiding the waste paper circles on the third round rod from spreading due to the loss of tension after the cutter cuts off the end of the spare paper roll, thus avoiding increasing the difficulty of manual cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of printers. More specifically, the present invention relates to a hotel invoice printer for business travel services and its usage method. Background Art

[0002] Existing Chinese patent: An invoice printer (CN212400677U) can effectively clamp and fix the invoice printer, prevent the invoice printer from sliding and falling, and at the same time prevent the invoice printer from being damaged, thus prolonging the service life of the invoice printer;

[0003] However, when using the invoice printer, it is necessary to install a paper roll in the invoice printer first to achieve continuous printing. When a customer requests a receipt, if the paper roll in the printer just runs out, the staff needs to disassemble the printer, replace the paper roll in it, and then perform the printing operation. During this process, the customer needs to wait for a long time, reducing the customer's hotel stay experience. Summary of the Invention

[0004] The present invention provides a hotel invoice printer for business travel services and its usage method, aiming to overcome the drawback that when the paper roll in the existing printer runs out, the customer needs to wait for the staff to replace the paper roll, reducing the customer's hotel stay experience.

[0005] To achieve the above object, the technical implementation scheme of the present invention is as follows:

[0006] A hotel invoice printer for business travel services includes a housing, a receiving block, and a rear cover; the receiving block is fixedly connected to the lower side of the housing; the rear cover is fixedly connected to the rear side of the housing; a connecting plate, a first round rod, a first limiting block, a second limiting block, a third limiting block, a print head body, a driving component, a conveying component, and a cutting component; the driving component is connected inside the housing; the connecting plate is connected to the driving component; the driving component is used to drive the connecting plate to move left or right; two first round rods are rotatably connected to the connecting plate; a first limiting block is fixedly connected to the opposite side of each of the two first round rods; a second limiting block is inserted into the opposite side of each of the two first round rods; four third limiting blocks are fixedly connected to the connecting plate; the third limiting blocks are L-shaped; each third limiting block is provided with an inclined surface; the print head body is fixedly connected inside the housing; a paper roll can be assembled on each of the two first round rods. After one of the paper rolls runs out, the connecting plate drives the two first round rods to move left or right, so that the other paper roll moves beside the print head body for printing operation; the conveying component is connected to the connecting plate; the cutting component is connected to the connecting plate.

[0007] More preferably, the conveying assembly includes a first connecting frame, a first electric push rod, a linkage block, a second round rod, a friction cylinder and a first driving unit; the first connecting frame is fixedly connected to the connecting plate; several first electric push rods are fixedly connected to the first connecting frame; a linkage block is fixedly connected between the telescopic ends of all the first electric push rods on the same side; a second round rod is rotatably connected to each of the two linkage blocks; a friction cylinder is fixedly connected to each of the two second round rods; a first driving unit is connected to the two linkage blocks; the first driving unit is used to drive the two second round rods to rotate.

[0008] More preferably, the cutting assembly includes a second connecting frame, a second electric push rod and a cutter; the second connecting frame is fixedly connected to the connecting plate; several second electric push rods are fixedly connected to the second connecting frame; a cutter is fixedly connected between the telescopic ends of all the second electric push rods on the same side.

[0009] More preferably, a collecting assembly is further included; the collecting assembly is connected to the front side of the housing; the collecting assembly includes a cylinder, a third round rod and a second driving unit; the cylinder is inserted into the housing; the third round rod is rotatably connected to the cylinder; a through groove is formed in the middle of the third round rod, and the through groove is composed of a square groove in the front and an isosceles trapezoidal groove in the rear; a second driving unit is connected to the cylinder; the second driving unit is used to rotate the third round rod.

[0010] More preferably, a fixing unit is further included; the fixing unit is connected to the left side of the housing; the fixing unit includes a sliding sleeve and a fixing block; two grooves are formed in the cylinder; the sliding sleeve is fixedly connected to the left side of the housing; the fixing block is slidably connected in the sliding sleeve, and a part of the structure of the fixing block is located in the groove.

[0011] More preferably, a blowing unit is further included; the blowing unit is connected to the housing; the blowing unit includes a connecting block, a nozzle, a pipeline and an air pump; the connecting block is fixedly connected to the housing; two inclined nozzles are fixedly connected to the connecting block; a pipeline is communicated with the input end of each of the two nozzles; the air pump is fixedly connected to the housing; the two pipelines are communicated with the output end of the air pump.

[0012] More preferably, an adhesive unit is further included; the adhesive unit is connected to the housing; the adhesive unit includes a glue dropper, a third electric push rod and a first push rod; the glue dropper is fixedly connected to the housing and is located above the third round rod; several third electric push rods are fixedly connected to the housing; the telescopic ends of all the third electric push rods are fixedly connected to the first push rod.

[0013] More preferably, the adhesive unit further includes a first elastic telescopic rod and a second push rod; several first elastic telescopic rods are fixedly connected to the rear side of the first push rod; the telescopic ends of all the first elastic telescopic rods are fixedly connected to the second push rod.

[0014] More preferably, the collection component further includes a second elastic telescopic rod; the third round rod is composed of upper and lower parts; several second elastic telescopic rods are fixedly connected between the upper and lower parts of the third round rod.

[0015] A method for using a hotel invoice printer for business travel services includes the following working steps:

[0016] S1: Printing, printing the end of the paper roll aligned with the printing head body through the printing head body;

[0017] S2: Cutting, cutting off the printed end of the paper roll through the cutter to obtain an invoice;

[0018] S3: Cleaning, winding and removing the dusty end of the spare paper roll through the third round rod to form a waste paper circle;

[0019] S4: Replacing, driving the spare paper roll to move beside the printing head body through the connecting plate, and the printing head body prints the end of the spare paper roll;

[0020] S5: Removing, manually taking out the waste paper circle on the third round rod.

[0021] Beneficial effects: By adopting the above technical solution of the present invention, when the paper roll is used up, the spare paper roll is driven by the connecting plate to move under the printing head body for printing operation, without the need for manual disassembly of the printer to replace the paper roll and then perform the printing operation, that is, customers do not need to wait, so as to prevent the reduction of the customer's hotel staying experience;

[0022] After the spare paper roll is static for a long time, the surface of its end will be contaminated with dust. At this time, the end of the spare paper roll is wound and removed through the third round rod, avoiding the problem that the printing operation is affected due to the dust contamination of the spare paper roll after long-term static placement;

[0023] During the process of the third round rod winding the end of the spare paper roll, by making the rear side of the through groove be an isosceles trapezoid, the end of the paper roll is limited and guided, making it easier to pass through the through groove. At the same time, the two nozzles convey obliquely forward airflows to the upper and lower sides of the end of the paper roll, so that the scattered ends of the paper roll are reattached, so that it can pass through the through groove smoothly, avoiding the problem that the end of the paper roll cannot penetrate into the through groove due to the dispersion of the end of the paper roll, and thus avoiding the failure of the operation of removing the end of the paper roll;

[0024] During the winding process of the third round bar on the end of the spare paper roll, the glue applicator is used to make the glue sandwiched between the layers of waste paper circles to stick them tightly, preventing the waste paper circles on the third round bar from spreading due to the loss of tension after the cutting knife cuts off the end of the spare paper roll, thus avoiding increasing the difficulty of manual cleaning. At the same time, the second push rod levels and fits the end of the waste paper circle, further reducing the difficulty of manual cleaning. At the same time, the first elastic telescopic rod rebounds and drives the second push rod to move towards the waste paper circle, making the second push rod contact the flat surface position of the waste paper circle, avoiding the problem that the end of the waste paper circle cannot fit when it is at the flat surface position;

[0025] When removing the waste paper circle, manually press the two parts of the third round bar to move towards each other, forming a gap between the third round bar and the waste paper circle, so as to easily remove the waste paper circle from the third round bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shows the first structural schematic diagram of the hotel invoice printer for business travel services of the present invention;

[0027] Figure 2 Shows the second structural schematic diagram of the hotel invoice printer for business travel services of the present invention;

[0028] Figure 3 Shows the first partial structural schematic diagram of the hotel invoice printer for business travel services of the present invention;

[0029] Figure 4 Shows the left view of the partial structure of the hotel invoice printer for business travel services of the present invention;

[0030] Figure 5 Shows the structural schematic diagram of the cutting component of the present invention;

[0031] Figure 6 Shows the second partial structural schematic diagram of the hotel invoice printer for business travel services of the present invention;

[0032] Figure 7 Shows the structural schematic diagram of the conveying component of the present invention;

[0033] Figure 8 Shows the first structural schematic diagram of the collection component of the present invention;

[0034] Figure 9 Shows the second structural schematic diagram of the collection component of the present invention;

[0035] Figure 10 Shows the third structural schematic diagram of the collection component of the present invention;

[0036] Figure 11 Shows the structural schematic diagram of the air blowing unit of the present invention;

[0037] Figure 12The structural schematic diagram of the bonding unit of the present invention is shown.

[0038] Among them, the above-mentioned drawings include the following reference numerals:

[0039] 1 - housing, 2 - receiving block, 3 - rear cover, 4 - connecting plate, 5 - first round rod, 6 - first limiting block, 7 - second limiting block, 8 - third limiting block, 9 - print head body, 10 - paper roll, 201 - electric slide rail, 202 - electric slider, 203 - first connecting frame, 204 - first electric push rod, 205 - linkage block, 206 - second round rod, 207 - friction cylinder, 208 - first motor, 209 - first spur gear, 2010 - second spur gear, 2011 - second connecting frame, 2012 - second electric push rod, 2013 - cutter, 301 - cylinder, 302 - third round rod, 303 - sliding sleeve, 304 - fixed block, 305 - second motor, 306 - third spur gear, 307 - toothed ring, 308 - connecting block, 309 - nozzle, 3010 - pipeline, 3011 - air pump, 3012 - glue dropper, 3013 - third electric push rod, 3014 - first push rod, 3015 - first elastic telescopic rod, 3016 - second push rod, 3017 - second elastic telescopic rod, 91 - inclined surface part, 92 - groove, 93 - through groove. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0041] Embodiment 1

[0042] A hotel invoice printer for business travel services, as Figures 1-7As shown in the figure, it includes a housing 1, a receiving block 2 and a rear cover 3; the receiving block 2 is bolted to the lower side of the housing 1; the rear cover 3 is bolted to the rear side of the housing 1; it further includes a connecting plate 4, a first round rod 5, a first limiting block 6, a second limiting block 7, a third limiting block 8, a print head body 9, a driving component, a conveying component and a cutting component; a driving component is connected inside the housing 1; the connecting plate 4 is connected to the driving component; the driving component is used to drive the connecting plate 4 to move left or right; two first round rods 5 are rotatably connected to the connecting plate 4, and the first round rod 5 is made of alloy material; a first limiting block 6 is welded to the opposite sides of the two first round rods 5; a second limiting block 7 is inserted into the opposite sides of the two first round rods 5; four third limiting blocks 8 are welded to the connecting plate 4; the third limiting block 8 is L-shaped; an inclined surface portion 91 is provided on each third limiting block 8; the print head body 9 is bolted to the middle of the housing 1; a paper roll 10 can be assembled on each of the two first round rods 5. After one of the paper rolls 10 is used up, the connecting plate 4 drives the two first round rods 5 to move left or right, so that the other paper roll 10 moves beside the print head body 9 for printing operation; a conveying component is connected to the connecting plate 4; a cutting component is connected to the connecting plate 4.

[0043] The driving component includes an electric slide rail 201 and an electric slider 202; two electric slide rails 201 are fixedly connected to the bottom of the housing 1; an electric slider 202 is slidably connected to each of the two electric slide rails 201; the upper sides of the two electric sliders 202 are fixedly connected to the connecting plate 4.

[0044] The conveying component includes a first connecting frame 203, a first electric push rod 204, a linkage block 205, a second round rod 206, a friction cylinder 207 and a first driving unit; the first connecting frame 203 is bolted to the rear side of the connecting plate 4; at least two first electric push rods 204 are bolted to the first connecting frame 203; a linkage block 205 is fixedly connected between the telescopic ends of all the first electric push rods 204 on the same side; a second round rod 206 is rotatably connected to each of the two linkage blocks 205, and the second round rod 206 is made of alloy material; a friction cylinder 207 is fixedly connected to each of the two second round rods 206, and the friction cylinder 207 is used to drive the end of the paper roll 10 to move forward; a first driving unit is connected to the two linkage blocks 205; the first driving unit is used to drive the two second round rods 206 to rotate.

[0045] The first driving unit includes a first motor 208, a first straight gear 209 and a second straight gear 2010; a first motor 208 is bolted to each of the two linkage blocks 205; a first straight gear 209 is fixedly connected to the output shaft of each of the two first motors 208; a second straight gear 2010 is fixedly connected to each of the two second round rods 206; the two first straight gears 209 are meshed with the corresponding second straight gears 2010.

[0046] The cutting assembly includes a second connecting frame 2011, a second electric push rod 2012, and a cutter 2013. The second connecting frame 2011 is bolted to the middle of the front side of the connecting plate 4. At least two second electric push rods 2012 are bolted to the second connecting frame 2011. The telescopic ends of all the second electric push rods 2012 on the same side are commonly fixed to a cutter 2013, and the cutter 2013 is used to cut off the printed paper roll 10.

[0047] During printing, the first motor 208 aligned with the print head body 9 is started. The first motor 208 drives the first spur gear 209 to rotate. The first spur gear 209 drives the second spur gear 2010 to rotate. The second spur gear 2010 drives the second round rod 206 to rotate. The second round rod 206 drives the friction cylinder 207 to rotate, so that the friction cylinder 207 drives the end of the paper roll 10 aligned with the print head body 9 to move forward through friction. During this process, the end of the paper roll 10 passes under the print head body 9, and the print head body 9 prints on the position of the end of the paper roll 10. And the third limit block 8 limits the upper sides of both sides of the end of the paper roll 10 to prevent the end of the originally wound paper roll 10 from rebounding and affecting the printing operation. After printing, the second electric push rod 2012 drives the cutter 2013 to move downward, and the cutter 2013 cuts off the end of the paper roll 10 to obtain an invoice. The invoice is received on the upper side of the receiving block 2 and extends out of the housing 1. Then the staff takes out the invoice and hands it to the customer to complete the invoice printing operation.

[0048] When the paper roll 10 aligned with the print head body 9 is used up, the electric slider 202 slides to the right on the electric slide rail 201. The electric slider 202 drives the connecting plate 4 to move to the right. The connecting plate 4 drives the parts on it to move to the right, so that the spare paper roll 10 moves to the right and aligns with the print head body 9. Then the corresponding first motor 208 is started, so that the friction cylinder 207 drives the end of the spare paper roll 10 to move forward through friction. The print head body 9 prints on the end of the spare paper roll 10. Then the cutter 2013 cuts off the end of the spare paper roll 10 to obtain an invoice. When the paper roll 10 is used up, the spare paper roll 10 is driven by the connecting plate 4 to move under the print head body 9 for printing operation, without the need for manual disassembly of the printer to replace the paper roll 10 and then perform the printing operation, that is, the customer does not need to wait, so as to prevent the reduction of the customer's in-store experience.

[0049] In the late night or early morning with low passenger flow, the connecting plate 4 drives the parts thereon to move leftward back to the original position, so that the paper roll 10 on the left moves back to the standby position again. Then the staff opens the rear cover 3, takes out the second limiting block 7 corresponding to the used paper roll 10, then pulls out the used paper roll 10, inserts a new paper roll 10 into the first round rod 5 until it contacts the first limiting block 6, and then inserts the second limiting block 7 into the first round rod 5 until it contacts the new paper roll 10. Then the first electric push rod 204 drives the linkage block 205 to move upward, the linkage block 205 drives the parts thereon to move upward, so that the friction cylinder 207 moves upward, forming a relatively large gap with the connecting plate 4. Then the staff manually passes the end of the paper roll 10 through the bottom of the friction cylinder 207, and the first electric push rod 204 drives the linkage block 205 to move downward, so that the friction cylinder 207 presses the end of the paper roll 10 against the connecting plate 4. Then the staff manually inserts the end of the new paper roll 10 between the two third limiting blocks 8, and the third limiting block 8 is provided with an inclined surface portion 91, making it easier to insert the end of the paper roll 10 and improving the convenience of manual operation, thus completing the paper roll 10 replacement operation.

[0050] Embodiment 2

[0051] Based on Embodiment 1, as Figures 1-3 and Figures 8-10 shown, it further includes a collection component; a collection component is connected to the front side of the housing 1; the collection component includes a cylinder 301, a third round rod 302 and a second driving unit; the cylinder 301 is inserted into the housing 1, and the cylinder 301 is made of alloy material; the third round rod 302 is rotatably connected to the cylinder 301; a through groove 93 is formed in the middle of the third round rod 302, and the through groove 93 is composed of a square groove in the front and an isosceles trapezoid groove in the rear; a second driving unit is connected to the cylinder 301; the second driving unit is used to rotate the third round rod 302 to wind and remove the damaged part of the paper roll 10, so as to avoid affecting the printing operation.

[0052] It further includes a fixing unit; a fixing unit is connected to the left side of the housing 1; the fixing unit includes a sliding sleeve 303 and a fixing block 304; two grooves 92 are formed in the cylinder 301; the sliding sleeve 303 is welded to the left side of the housing 1; the fixing block 304 is slidably connected in the sliding sleeve 303, and a part of the structure of the fixing block 304 is located in the groove 92, and the cylinder 301 is fixed by the cooperation of the fixing block 304 and the groove 92.

[0053] The second driving unit includes a second motor 305, a third straight gear 306 and a toothed ring 307; the second motor 305 is bolted to the inner side of the cylinder 301; the output shaft of the second motor 305 is fixedly connected with the third straight gear 306; the toothed ring 307 is fixedly connected to the left side of the third round rod 302; the third straight gear 306 meshes with the toothed ring 307.

[0054] After the spare paper roll 10 has been static for a long time, dust will adhere to its end surface, which will affect the printing operation. At this time, the corresponding first motor 208 is started, so that the friction cylinder 207 drives the end of the spare paper roll 10 forward through friction, and the end of the spare paper roll 10 passes through the through groove 93. Then, the second motor 305 is started. The second motor 305 drives the third spur gear 306 to rotate, the third spur gear 306 drives the toothed ring 307 to rotate, and the toothed ring 307 drives the third round rod 302 to rotate, so that the third round rod 302 winds up the end of the spare paper roll 10, so that the end of the paper roll 10 contaminated with dust is wound around the third round rod 302. Then, the second electric push rod 2012 drives the cutter 2013 to move downward, so that the cutter 2013 cuts off the end of the spare paper roll 10. During this process, the winding part of the spare paper roll 10 unwinds, so that the new end of the spare paper roll 10 is in a clean state, thus avoiding the problem of affecting the printing operation due to the dust adhered to the spare paper roll 10 after a long time of static. After that, an operator manually pushes the fixed block 304 to slide upward in the sliding sleeve 303, so that the fixed block 304 is away from the groove 92. Then, the operator manually pulls the cylinder 301 to move leftward, and the cylinder 301 drives the third round rod 302 to move leftward away from the housing 1, so as to take out the waste paper circle wound around the third round rod 302.

[0055] Embodiment 3

[0056] On the basis of Embodiment 2, as Figures 1-3 and Figures 8-12 shown, it further includes a blowing unit; a blowing unit is connected to the housing 1; the blowing unit includes a connecting block 308, a nozzle 309, a pipe 3010 and an air pump 3011; the connecting block 308 is bolted to the housing 1; two inclined nozzles 309 are fixedly connected to the connecting block 308, and the upper side and the lower side of the end of the paper roll 10 are blown simultaneously through the two nozzles 309, so that the layers of paper at the end of the paper roll 10 are attached to each other, so that the end of the paper roll 10 is more easily inserted into the through groove 93; the input ends of the two nozzles 309 are both communicated and plugged with a pipe 3010, and the pipe 3010 can be a square pipe or a circular pipe; the air pump 3011 is fixedly connected to the housing 1; the two pipes 3010 are both communicated and plugged with the output end of the air pump 3011.

[0057] It further includes an adhesive unit; an adhesive unit is connected to the housing 1; the adhesive unit includes a glue dropper 3012, a third electric push rod 3013 and a first push rod 3014; the glue dropper 3012 is bolted to the housing 1 and is located above the third round rod 302; at least two third electric push rods 3013 are bolted to the housing 1; the telescopic ends of all the third electric push rods 3013 are commonly fixedly connected with a first push rod 3014, and the end of the wound paper roll 10 is attached to the third round rod 302 through the first push rod 3014, so as to facilitate the operator to remove it.

[0058] The bonding unit further includes a first elastic telescopic rod 3015 and a second push rod 3016; at least two first elastic telescopic rods 3015 are fixedly connected to the rear side of the first push rod 3014; the telescopic ends of all the first elastic telescopic rods 3015 are commonly fixedly connected to the second push rod 3016.

[0059] The collecting assembly further includes a second elastic telescopic rod 3017; the third round rod 302 consists of two parts, upper and lower; at least two second elastic telescopic rods 3017 are fixedly connected between the upper and lower parts of the third round rod 302. Manually press the two parts of the third round rod 302 to move towards each other, so as to form a gap between the third round rod 302 and the waste paper coil thereon, which is conducive to manually removing the waste paper coil.

[0060] A method for using a hotel invoice printer for business trip services includes the following working steps:

[0061] S1: Printing, the printing head body 9 prints the end of the paper roll 10 aligned with it.

[0062] S2: Cutting, the cutter 2013 cuts off the printed end of the paper roll 10 to obtain an invoice.

[0063] S3: Cleaning, the third round rod 302 winds up and removes the dust-contaminated end of the spare paper roll 10 to form a waste paper coil.

[0064] S4: Replacing, the connecting plate 4 drives the spare paper roll 10 to move beside the printing head body 9, and the printing head body 9 prints the end of the spare paper roll 10.

[0065] S5: Removing, manually remove the waste paper coil on the third round rod 302.

[0066] During the process of the end of the paper roll 10 passing through the through groove 93, since the paper roll 10 is multi-part paper, that is, the end of the paper roll 10 may spread out after being separated from the limit of the third limit block 8, resulting in the end of the paper roll 10 being unable to pass through the through groove 93, and thus the operation of removing the end of the paper roll 10 fails. By making the rear side of the through groove 93 an isosceles trapezoid, the end of the paper roll 10 is limited and guided, making it easier to pass through the through groove 93. At the same time, start the air pump 3011, and the air pump 3011 conveys air to the nozzles 309 through the pipeline 3010, so that the two nozzles 309 convey obliquely forward air currents to the upper and lower sides of the end of the paper roll 10, so that the scattered ends of the paper roll 10 are reattached, so that it can pass through the through groove 93 smoothly, avoiding the problem that the end of the paper roll 10 cannot pass through the through groove 93 due to the spread of the end of the paper roll 10, and thus avoiding the failure of the operation of removing the end of the paper roll 10.

[0067] When the third round rod 302 winds the end of the paper roll 10, a waste paper coil is formed on the third round rod 302. At this time, the glue applicator 3012 drips glue onto the upper side of the waste paper coil. The third round rod 302 continues to rotate, so that the glue is sandwiched between the layers of the waste paper coil, and the waste paper coil is glued tightly, avoiding the situation that after the cutter 2013 cuts off the end of the spare paper roll 10, the waste paper coil on the third round rod 302 loses tension and scatters, thus avoiding increasing the difficulty of manual cleaning.

[0068] When the cutter 2013 cuts off the end of the spare paper roll 10, since there is a certain distance between the cutting position and the third round rod 302, the end of the waste paper coil cannot fit. At this time, the third electric push rod 3013 drives the first push rod 3014 to move backward. The first push rod 3014 drives the first elastic telescopic rod 3015 to move backward. The first elastic telescopic rod 3015 drives the second push rod 3016 to move backward, so that the second push rod 3016 presses the waste paper coil tightly on the third round rod 302 and compresses the first elastic telescopic rod 3015. The third round rod 302 drives the waste paper coil to rotate, that is, the second push rod 3016 slides on the surface of the waste paper coil, so that the second push rod 3016 levels and fits the end of the waste paper coil, further reducing the difficulty of manual cleaning. Since a through groove 93 is formed on the third round rod 302, the position of the waste paper coil corresponding to the through groove 93 is a plane. When the through groove 93 on the third round rod 302 passes through the second push rod 3016, the first elastic telescopic rod 3015 rebounds and drives the second push rod 3016 to move towards the waste paper coil, so that the second push rod 3016 contacts the plane position of the waste paper coil, avoiding the problem that the end of the waste paper coil cannot fit when it is located at the plane position.

[0069] After the third round rod 302 is taken out, manually press the two parts of the third round rod 302 to move towards each other and compress the second elastic telescopic rod 3017, so that a gap is formed between the third round rod 302 and the waste paper coil, and thus the waste paper coil can be easily taken out from the third round rod 302.

[0070] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from the present disclosure will understand that various other embodiments can be designed without departing from the scope of the present invention. Therefore, the scope of the present invention should be limited only by the appended claims.

Claims

1. A hotel invoice printer for business travel services, comprising a housing (1); a receiving block (2) is fixedly connected to the lower side of the housing (1); a rear cover (3) is fixedly connected to the rear side of the housing (1); and the characteristics are as follows: A driving component is connected inside the housing (1); a connecting plate (4) is connected to the driving component; the driving component is used to drive the connecting plate (4) to move left or right; two first round rods (5) are rotatably connected to the connecting plate (4); a first limiting block (6) is fixedly connected to the opposite sides of the two first round rods (5); a second limiting block (7) is inserted into the opposite sides of the two first round rods (5); four third limiting blocks (8) are fixedly connected to the connecting plate (4). The third limiting block (8) is L-shaped; an inclined surface portion (91) is provided on each third limiting block (8); a print head body (9) is fixedly connected inside the housing (1); a paper roll (10) can be assembled on each of the two first round rods (5). After one of the paper rolls (10) is used up, the connecting plate (4) drives the two first round rods (5) to move left or right, so that the other paper roll (10) moves beside the print head body (9) for printing operation; a conveying component is connected to the connecting plate (4); a cutting component is connected to the connecting plate (4). The conveying component includes a first connecting frame (203); the first connecting frame (203) is fixedly connected to the connecting plate (4); a number of first electric push rods (204) are fixedly connected to the first connecting frame (203); a linkage block (205) is jointly fixedly connected between the telescopic ends of all the first electric push rods (204) on the same side; a second round rod (206) is rotatably connected to each of the two linkage blocks (205); a friction cylinder (207) is fixedly connected to each of the two second round rods (206); a first driving unit is connected to the two linkage blocks (205). The first driving unit is used to drive the two second round rods (206) to rotate. A collecting component is further included; the collecting component is connected to the front side of the housing (1); the collecting component includes a cylinder (301); the cylinder (301) is inserted into the housing (1); a third round rod (302) is rotatably connected to the cylinder (301); a through groove (93) is formed in the middle of the third round rod (302), and the through groove (93) is composed of a square groove in the front and an isosceles trapezoidal groove in the rear; a second driving unit is connected to the cylinder (301); the second driving unit is used to rotate the third round rod (302). A blowing unit is further included; the blowing unit is connected to the housing (1); the blowing unit includes a connecting block (308); the connecting block (308) is fixedly connected to the housing (1); two inclined nozzles (309) are fixedly connected to the connecting block (308); a pipeline (3010) is communicated with the input ends of the two nozzles (309); an air pump (3011) is fixedly connected to the housing (1); the two pipelines (3010) are both communicated with the output end of the air pump (3011). A bonding unit is further included; the bonding unit is connected to the housing (1); the bonding unit includes a glue dropper (3012); the glue dropper (3012) is fixedly connected to the housing (1), and the glue dropper (3012) is located above the third round rod (302); a number of third electric push rods (3013) are fixedly connected to the housing (1); a first push rod (3014) is jointly fixedly connected to the telescopic ends of all the third electric push rods (3013).

2. The hotel invoice printer for business travel services according to claim 1, characterized in that, The cutting assembly includes a second connecting frame (2011); the second connecting frame (2011) is fixedly connected to the connecting plate (4); several second electric push rods (2012) are fixedly connected to the second connecting frame (2011); the telescopic ends of all the second electric push rods (2012) on the same side are commonly fixedly connected to a cutting knife (2013).

3. A hotel invoice printer for business travel services according to claim 1, characterized in that, It further includes a fixing unit; the fixing unit is connected to the left side of the housing (1); the fixing unit includes a sliding sleeve (303); Two grooves (92) are formed in the cylinder (301); the sliding sleeve (303) is fixedly connected to the left side of the housing (1); a fixing block (304) is slidably connected in the sliding sleeve (303), and a part of the structure of the fixing block (304) is located in the groove (92).

4. A hotel invoice printer for business travel services according to claim 1, characterized in that, The bonding unit further includes a first elastic telescopic rod (3015); several first elastic telescopic rods (3015) are fixedly connected to the rear side of the first push rod (3014); the telescopic ends of all the first elastic telescopic rods (3015) are commonly fixedly connected to a second push rod (3016).

5. A hotel invoice printer for business travel services according to claim 1, characterized in that, The collecting assembly further includes a second elastic telescopic rod (3017); the third round rod (302) is composed of upper and lower parts; several second elastic telescopic rods (3017) are fixedly connected between the upper and lower parts of the third round rod (302).

6. A method for using a hotel invoice printer for business travel services, characterized in that, The usage method uses the hotel invoice printer for business trips described in claim 5, and includes the following working steps: S1: Printing, printing the end of the paper roll (10) aligned with the printing head body (9) through the printing head body (9); S2: Cutting, cutting off the printed end of the paper roll (10) through the cutting knife (2013) to obtain an invoice; S3: Cleaning, winding and removing the end of the spare paper roll (10) contaminated with dust through the third round rod (302) to form a waste paper circle; S4: Replacing, driving the spare paper roll (10) to move beside the printing head body (9) through the connecting plate (4), and the printing head body (9) prints the end of the spare paper roll (10); S5: Removing, manually taking out the waste paper circle on the third round rod (302).

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