A printer external paper ejector

Abstract

The present application relates to printing device technical field, more specifically to a kind of printer external paper ejector, the paper ejector is connected at the external outlet of printer, the inside of shell is equipped with support, the upper portion of support is rotatably arranged with driving roller mechanism between shell, the lower portion of support is rotatably arranged with driven roller mechanism, driving roller mechanism and driven roller mechanism are linked by gear, tongue is arranged on driving roller mechanism, stepper motor drive module is installed on the side of shell, stepper motor drive module is linked with driving roller mechanism, recovery mechanism is also rotatably arranged at the lower portion of support away from shell.The present application is installed in the paper ejector at the outlet of thermal printer, cooperate with thermal printer to work, and the printed paper is first entered into the paper ejector, then is held by two groups of rubber rollers, after waiting for the printer to print complete page content and cut off paper, paper is sent out by the paper ejector, to prevent user to pull paper during paper output, resulting in printing failure machine and printer failure.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and more specifically to an external paper ejector for a printer. Background Technology

[0002] Thermal printers are widely used in supermarkets, shopping malls, telecommunications, hospitals, and other fields, using thermal roll paper as the printing medium to print transaction receipts for customers. Thermal paper is formed by layering base paper, base coating, thermal coating, and protective layer in sequence, with continuous thermal paper wound around a core tube to form thermal roll paper.

[0003] Patent No. 201410356354.X discloses a thermal paper feeding method and a thermal printer. The thermal printer includes a printing mechanism for performing printing on thermal paper. The printing mechanism includes a rubber roller and a print head arranged tangentially. The thermal paper feeding method includes: during printing, feeding thermal paper along the paper feed direction between the rubber roller and the print head to perform printing on the thermal paper; after printing is completed, feeding thermal paper along the paper ejection direction until the thermal paper leaves the printing position, which is the tangential position between the rubber roller and the print head. This invention solves the problem in related technologies where prolonged pressure of thermal paper between the print head and the rubber roller affects printing quality.

[0004] However, with the development of information technology, many public institutions now use unattended self-service terminals to print reports. These terminals are equipped with embedded thermal printers. Because the printers are operated directly by users, paper jams or blockages caused by user errors can affect the use of the self-service equipment. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an external paper ejector for printers that can prevent paper jams and paper blockages.

[0006] To achieve the above objectives, the present invention provides the following technical solution, which mainly includes:

[0007] An external paper ejector for a printer is connected to the printer's external outlet and includes a housing. A support is provided inside the housing. An active roller mechanism is rotatably mounted between the upper part of the support and the housing, and a driven roller mechanism is rotatably mounted at the lower part of the support. The active and driven roller mechanisms are linked by gears. A tongue is provided on the active roller mechanism, located between the upper part of the support and the housing. A stepper motor drive module is mounted on one side of the housing and is linked to the active roller mechanism. A retraction mechanism is also rotatably mounted at the lower part of the support, away from the housing.

[0008] Preferably, the bracket has a paper outlet, which is inserted through the outer casing. A paper outlet sensor switch is provided inside the paper outlet, and a paper feed sensor switch is provided on the upper part of the bracket away from the outer casing.

[0009] Preferably, a limiting groove is provided on the side of the housing away from the stepper motor drive module, and mounting holes, a first sliding groove and a second sliding groove are provided sequentially from top to bottom on both sides of the inside of the housing.

[0010] Preferably, a limiting post is fixedly connected to one end of the tongue near the limiting groove, and the limiting post fits into the limiting groove.

[0011] Preferably, the active roller mechanism includes a power roller, a drive gear, and a first auxiliary gear. The upper part of the bracket is rotatably connected to the outer shell. The power roller passes through the mounting holes. The end of the power roller near the stepper motor drive module is fixedly connected to the drive gear. The drive gear is linked with the stepper motor drive module. The end of the power roller away from the drive gear is fixedly connected to the first auxiliary gear.

[0012] Preferably, the driven roller mechanism includes a driven shaft, hard rubber wheels, a second auxiliary gear, and a connecting frame. The connecting frame is rotatably connected to both ends of the power roller, and the driven shaft is slidably connected between the connecting frames. Multiple hard rubber wheels are rotatably connected to the driven shaft, and the number and position of the hard rubber wheels correspond to the power roller. The second auxiliary gear is rotatably connected to the end of the driven shaft near the stepper motor drive module, and the second auxiliary gear meshes with the first auxiliary gear.

[0013] Preferably, it also includes tension springs, and multiple tension springs are provided between the power roller and the driven shaft.

[0014] Preferably, the connecting frame has a circular through hole and a rectangular through hole sequentially from top to bottom. A limiting block is provided at the lower end of the connecting frame. The limiting block and the connecting frame are an integral structure. The power roller is rotatably connected to the connecting frame in a circular manner. The circular through hole corresponds to the mounting hole. The driven shaft is slidably connected to the rectangular through hole of the connecting frame. The rectangular through hole corresponds to the first slide groove. The limiting block is located in the second slide groove and is slidably connected to the second slide groove.

[0015] Preferably, the recycling mechanism includes a recycling roller and a third auxiliary gear. The recycling roller is rotatably connected between the outer shell and the outer shell. The third auxiliary gear is fixedly connected to one end of the recycling roller near the limiting groove. When the power roller reverses, the second auxiliary gear and the third auxiliary gear mesh.

[0016] As can be seen from the above technical solution, compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By installing the paper ejector at the thermal printer outlet, the printed paper first enters the paper ejector and is held by two sets of rubber rollers when the thermal printer is working. After the printer prints the complete page and cuts the paper, the paper ejector then feeds the paper out, preventing the user from pulling the paper during the paper output process, which could cause printing failure or printer malfunction.

[0018] 2. Additionally, if a user blocks the paper outlet during the paper ejection process, the paper ejector rollers will slip to prevent paper from getting caught inside the paper ejector rollers.

[0019] 3. After the paper dispenser dispenses a full sheet of paper, if the user does not take it away, the dispenser will activate the recycling function to recycle the paper back into the self-service terminal device to prevent the leakage of personal information in the printed report. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is an exploded view of the front three-dimensional structure of the present invention.

[0022] Figure 2 This is an exploded view of the rear three-dimensional structure of the present invention.

[0023] Figure 3 This is a frontal perspective view of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the back side of the present invention.

[0025] Figure 5 This is a cross-sectional view of the internal structure of the side of the present invention.

[0026] Figure 6 This is an enlarged view of point A in the present invention.

[0027] Figure 7 This is a three-dimensional structural diagram of the connecting frame of the present invention.

[0028] Figure 8 This is a first working principle diagram of the present invention.

[0029] Figure 9 This is a second working principle diagram of the present invention.

[0030] Figure 10 This is the third working principle diagram of the present invention.

[0031] Figure 11 This is the fourth working principle diagram of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1-Bracket, 101-Paper feed sensor switch, 102-Paper output sensor switch, 103-Paper output port, 2-Housing shell, 201-Mounting hole, 202-First slide groove, 203-Second slide groove, 204-Limiting groove, 3-Tongue, 301-Limiting post, 4-Power roller, 401-Drive gear, 402-First auxiliary gear, 403-Tension spring, 5-Driven shaft, 501-Hard rubber wheel, 502-Second auxiliary gear, 503-Connecting frame, 5031-Circular through hole, 5032-Rectangular through hole, 5033-Limiting block, 6-Recycle roller, 601-Third auxiliary gear, 7-Stepper motor drive module, 8-Printer, 801-Glue roller, 802-Cutter, 9-Paper roll. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example

[0035] An external paper ejector for a printer, such as Figures 1-5 As shown, the device includes a housing 2, with a support 1 inside the housing 2. An active roller mechanism is rotatably mounted between the upper part of the support 1 and the housing 2, and a driven roller mechanism is rotatably mounted at the lower part of the support 1. The active roller mechanism and the driven roller mechanism are linked by gears. A tongue 3 is mounted on the active roller mechanism and is located between the upper part of the support 1 and the housing 2. A stepper motor drive module is mounted on one side of the housing 2 and is linked to the active roller mechanism. A recycling mechanism is also rotatably mounted at the lower part of the support 1 away from the housing 2.

[0036] To further optimize the above solution, the bracket 1 is provided with a paper outlet 103, which is inserted through the outer shell 2. A paper outlet sensor switch 102 is provided inside the paper outlet 103, and a paper feed sensor switch 101 is provided on the upper part of the bracket 1 away from the outer shell 2.

[0037] To further optimize the above solution, a limiting groove 204 is formed on the side of the outer casing 2 away from the stepper motor drive module. Mounting holes 201, a first sliding groove 202, and a second sliding groove 203 are sequentially formed from top to bottom on both sides of the interior of the outer casing 2. Figure 2 and Figure 6 As shown.

[0038] To further optimize the above scheme, a limiting post 301 is fixedly connected to one end of the tongue 3 near the limiting groove 204, and the limiting post 301 fits into the limiting groove 204.

[0039] To further optimize the above scheme, the active roller mechanism includes a power roller 4, a drive gear 401, and a first auxiliary gear 402. The upper part of the bracket 1 is rotatably connected to the outer shell 2. The power roller 4 passes through the mounting holes 201. The end of the power roller 4 closest to the stepper motor drive module is fixedly connected to the drive gear 401. The drive gear 401 is linked with the stepper motor drive module. The end of the power roller 4 away from the drive gear 401 is fixedly connected to the first auxiliary gear 402.

[0040] To further optimize the above scheme, the driven roller mechanism includes a driven shaft 5, hard rubber wheels 501, a second auxiliary gear 502, and a connecting frame 503. Both ends of the power roller 4 are rotatably connected to the connecting frame 503, and the driven shaft 5 is slidably connected between the connecting frames 503. Multiple hard rubber wheels 501 are rotatably connected to the driven shaft 5. The number and position of the hard rubber wheels 501 correspond to the power roller 4. The second auxiliary gear 502 is fixedly connected to one end of the driven shaft 5 near the stepper motor drive module. The second auxiliary gear 502 meshes with the first auxiliary gear 402.

[0041] To further optimize the above scheme, a tension spring 403 is also included, and multiple tension springs 403 are provided between the power roller 4 and the driven shaft 5.

[0042] like Figure 7 As shown, to further optimize the above scheme, the connecting frame 503 is provided with a circular through hole 5031 and a rectangular through hole 5032 from top to bottom. The lower end of the connecting frame 503 is provided with a limiting block 5033. The limiting block 5033 and the connecting frame 503 are an integral structure. The power roller 4 is rotatably connected to the connecting frame 503. The circular through hole 5031 corresponds to the mounting hole 201. The driven shaft 5 is slidably connected to the rectangular through hole 5032 of the connecting frame 503. The rectangular through hole 5032 corresponds to the first slide groove 202. The limiting block 5033 is located in the second slide groove 203 and is slidably connected to the second slide groove 203.

[0043] To further optimize the above scheme, the recycling mechanism includes a recycling roller 6 and a third auxiliary gear 601. The recycling roller 6 is rotatably connected between the outer shell 2 and the third auxiliary gear 601 is fixedly connected to one end of the recycling roller 6 near the limiting groove 204. When the power roller 4 reverses, the second auxiliary gear 502 meshes with the third auxiliary gear 601.

[0044] like Figure 8As shown, the paper feeder of this application is installed at the ticket output port of a thermal printer to work in conjunction with the thermal printer. When the thermal printer is working, the printed paper first enters the paper feeder, and the paper feed sensor switch 101 receives a signal, thereby activating the stepper motor drive module. At this time, the power roller 4 rotates forward, and simultaneously, under the action of the tension spring 403, the hard rubber roller contacts the power roller 4. Under the action of friction, the hard rubber roller rotates relative to the power roller. At this time, the stepper motor drive module stops, and the paper is held by the power roller 4 and the hard rubber roller. At this time, the paper will push the tongue 3 up, as shown. Figure 9 As shown, after the printer finishes printing and the paper is cut by the cutter, the paper feed sensor switch 101 no longer receives a paper feed signal, thus restarting the stepper motor drive module, which drives the power roller 4 to rotate forward. Simultaneously, under the action of the tension spring 403, the hard rubber roller contacts the power roller 4, and under the action of friction, the hard rubber roller rotates relative to the power roller, thus feeding out the printed paper. Figure 10 As shown, this prevents users from pulling on the paper during the paper output process, which could lead to printing failures and printer malfunctions.

[0045] Because the rigid rubber roller contacts the power roller 4 under the action of the tension spring 403, and then rotates relative to each other under the action of friction, if a user blocks the paper outlet 103 during the paper output process, the paper feeder roller will slip to prevent the paper from being rolled into the paper feeder roller.

[0046] like Figure 11 As shown, after the paper ejector ejects a whole sheet of paper, if the user does not take it away, the paper ejector will activate the recycling function. At this time, the stepper motor drive module drives the power roller 4 to reverse. When the power roller 4 reverses, under the action of the tension spring 403 and the friction between the power roller 4 and the hard rubber roller, the connecting frame 503 is driven to rotate synchronously. The connecting frame 503 stops at the predetermined position under the action of the limit block 5033. At this time, the hard rubber roller squeezes the recycling roller 6, and at this time, the third gear 601 meshes with the second gear 502, thereby driving the recycling roller 6 to rotate, so that the paper is recycled along the channel of the bracket 1 to the bottom of the paper ejector, and the paper is recycled into the self-service terminal equipment to prevent the leakage of personal information in the printed report.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An external paper ejector for a printer, the paper ejector being connected to the external outlet of the printer, comprising a housing (2), wherein a bracket (1) is provided on the inner side of the housing (2), characterized in that, An active roller mechanism is rotatably arranged between the upper part of the support (1) and the outer shell (2), and a driven roller mechanism is rotatably arranged at the lower part of the support (1). The active roller mechanism and the driven roller mechanism are linked by gears. A tongue (3) is provided on the active roller mechanism. The tongue (3) is located between the upper part of the support (1) and the outer shell (2). A stepper motor drive module (7) is installed on one side of the outer shell (2). The stepper motor drive module (7) is linked with the active roller mechanism. A recycling mechanism is also rotatably arranged at the lower part of the support (1) away from the outer shell (2). A limiting groove (204) is provided on the side of the outer shell (2) away from the stepper motor drive module (7). The inner sides of the outer shell (2) are provided with mounting holes (201), a first sliding groove (202) and a second sliding groove (203) from top to bottom. The active roller mechanism includes a power roller (4), a drive gear (401) and a first auxiliary gear (402). The upper part of the bracket (1) is rotatably connected to the outer shell (2). The power roller (4) passes through the mounting holes (201). The end of the power roller (4) near the stepper motor drive module (7) is fixedly connected to the drive gear (401). The drive gear (401) is linked with the stepper motor drive module (7). The end of the power roller (4) away from the drive gear (401) is fixedly connected to the first auxiliary gear (402). The driven roller mechanism includes a driven shaft (5), hard rubber wheels (501), a second auxiliary gear (502), and a connecting frame (503). The two ends of the power roller (4) are rotatably connected to the connecting frame (503). The driven shaft (5) is slidably connected between the connecting frames (503). Multiple hard rubber wheels (501) are rotatably connected to the driven shaft (5). The end of the driven shaft (5) near the stepper motor drive module (7) is rotatably connected to the second auxiliary gear (502). The second auxiliary gear (502) meshes with the first auxiliary gear (402). It also includes tension springs (403), and multiple tension springs (403) are provided between the power roller (4) and the driven shaft (5). The connecting frame (503) has a circular through hole (5031) and a rectangular through hole (5032) sequentially from top to bottom. The lower end of the connecting frame (503) is provided with a limiting block (5033). The limiting block (5033) and the connecting frame (503) are an integral structure. The power roller (4) is rotatably connected to the circular through hole (5031) of the connecting frame (503). The circular through hole (5031) corresponds to the mounting hole (201). The driven shaft (5) is slidably connected to the rectangular through hole (5032) of the connecting frame (503). The rectangular through hole (5032) corresponds to the first slide groove (202). The limiting block (5033) is located in the second slide groove (203) and is slidably connected to the second slide groove (203). The recycling mechanism includes a recycling roller (6) and a third auxiliary gear (601). The recycling roller (6) is rotatably connected between the outer shell (2). The third auxiliary gear (601) is fixedly connected to one end of the recycling roller (6) near the limiting groove (204). When the power roller (4) reverses, the second auxiliary gear (502) meshes with the third auxiliary gear (601).

2. The printer external paper ejector according to claim 1, characterized in that, The bracket (1) has a paper outlet (103) which is inserted through the outer shell (2). A paper outlet sensor switch (102) is provided inside the paper outlet (103). A paper feed sensor switch (101) is provided on the upper part of the bracket (1) away from the outer shell (2).

3. The printer external paper ejector according to claim 1, characterized in that, The end of the tongue (3) near the limiting groove (204) is fixedly connected to a limiting post (301), and the limiting post (301) fits into the limiting groove (204).

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