Wide-format printer with paper limiting structure

Abstract

The utility model belongs to the technical field of printers, and discloses a wide-format printer with a paper limiting structure, which comprises a printer, a paper changing mechanism is arranged in the printer, a paper changing bin is arranged at the top of the paper changing mechanism, and a left positioning rod and a right positioning rod are arranged in the paper changing bin. The close ends of the two positioning rods are each connected with a positioning head through a bearing, a paper roller is connected between the two positioning heads in an abutting mode, and the far ends of the two positioning heads are each fixedly connected with a limiting mechanism. The limiting mechanism comprises a linkage frame which is fixedly connected to the side, close to the positioning head, of the movable end of the positioning rod in a sleeving mode. Due to the arrangement of the linkage frame, the connecting piece can move along with the positioning head, so that one end of the limiting mechanism can be always matched with one end of the paper roller, and the other end of the limiting mechanism enables the limiting wheel to be in rolling contact with the side face of paper through the limiting frame under the elastic connection effect of the connecting piece. Therefore, the effect of self-adaptive paper limiting is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printers, and specifically relates to a wide-format printer with a paper limiting structure. Background Art

[0002] A printer is one of the output devices of a computer, used to print the processing results of the computer on relevant media. There are many types of printers. According to whether the printing element has a striking action on the paper, it is divided into impact printers and non-impact printers. According to the printing character structure, it is divided into full-shape character printers and dot-matrix character printers.

[0003] The paper limiting mechanism realizes the limiting and calibration function by blocking both sides of the paper. However, some printers are applicable to multiple specifications of printing paper, but most of the existing printer paper limiting mechanisms are either unable to be adjusted or are difficult to adjust, thus bringing inconvenience to users. Therefore, it needs to be improved. Summary of the Utility Model

[0004] To solve the problems raised in the above background art, the utility model provides a wide-format printer with a paper limiting structure, which has the advantage of adaptive limiting.

[0005] To achieve the above object, the utility model provides the following technical solution: A wide-format printer with a paper limiting structure, including a printer, a paper changing mechanism is installed inside the printer, a paper changing bin is opened at the top of the paper changing mechanism, two positioning rods are arranged inside the paper changing bin, a positioning head is connected to the adjacent ends of the two positioning rods through bearings, a paper roller is abutted between the two positioning heads, and a limiting mechanism is fixedly connected to the remote ends of the two positioning heads;

[0006] The limiting mechanism includes a linkage frame fixedly sleeved on the side of the movable end of the positioning rod close to the positioning head. A connecting piece is fixedly connected to one end of the two opposite surfaces of the linkage frame close to the positioning rod. A limiting frame is movably connected inside the connecting piece. The other end of the limiting frame is far from the positioning rod and is movably connected with a limiting wheel. The opposite surfaces of the two limiting wheels are abutted against the left and right sides of the paper outside the paper roller.

[0007] As shown in the figure, a guiding roller is installed inside the paper changing bin in front of the positioning rod. The two ends of the guiding roller are connected to the paper changing mechanism through bearings. The paper on the paper roller contacts the bottom of the guiding roller.

[0008] As shown in the figure, the linkage frame includes a linkage plate connected to the remote ends of the two connecting pieces. The axis of the linkage plate is perpendicular to the axis of the positioning rod. A connecting hole is opened at one end of the linkage plate close to the positioning rod. The linkage plate is fixedly sleeved outside the positioning rod through the connecting hole.

[0009] As shown in the figure, the connecting member includes a connecting frame fixedly connected to the facing surfaces of two linkage plates. A connecting shaft is movably installed inside the connecting frame, and the cross-section of the connecting shaft is in the shape of a "work" character; both ends of the connecting shaft penetrate through the limiting frame and are fixedly connected inside the connecting frame, and a hairspring is arranged in the middle of the outer surface of the connecting shaft.

[0010] As shown in the figure, the limiting frame includes a limiting swing arm movably installed inside the connecting frame. One end of the limiting swing arm is movably sleeved outside the connecting shaft, and the upper and lower ends of the outer surface of the connecting shaft are movably sleeved with the inner wall of one end of the limiting swing arm. One end of the hairspring is connected to the middle of the connecting shaft, and the other end of the hairspring is connected to the inner wall of the limiting swing arm.

[0011] As shown in the figure, a second through groove is formed on the side surface of the limiting swing arm, and a first through groove is formed on the side surface of the linkage plate. The guide roller penetrates through the inside of the first through groove and the second through groove.

[0012] As shown in the figure, the limiting wheel includes a limiting wheel body movably installed at the other end of the limiting swing arm through a bearing. A positioning groove is formed on the outer surface of the limiting wheel body, the inner wall of the positioning groove is smooth, and the horizontal plane where the top of the inner cavity of the positioning groove is located is at the bottom of the horizontal plane where the bottoms of the inner cavities of the second through groove and the first through groove are located.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Due to the setting of the linkage frame in the present utility model, the connecting member can move along with the positioning head, so that one end of the limiting mechanism can always be adapted to one end of the paper roll, and the other end can make the limiting wheel roll and contact the side surface of the paper through the limiting frame under the elastic connection action of the connecting member, thereby achieving the effect of self-adaptive limiting of the paper.

[0015] 2. Due to the setting of the positioning head in the present utility model, it can not only achieve the effect of fixing the paper roll in cooperation with the positioning rod, but also be applicable to paper rolls with different diameters and lengths, thereby achieving the effect of facilitating the fixing of paper rolls of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the paper changing mechanism of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the present utility model;

[0018] Figure 3 It is a top view of the paper changing mechanism of the present utility model;

[0019] Figure 4This is a schematic structural view of the limit mechanism of the present utility model;

[0020] Figure 5 This is a cross-sectional view of the top of the connection shaft in the limit mechanism of the present utility model.

[0021] In the figure: 1, printer; 2, paper changing mechanism; 3, paper changing bin; 4, positioning rod; 5, positioning head; 6, paper roller; 7, limit mechanism; 71, linkage frame; 711, linkage plate; 712, connection hole; 713, first through groove; 72, connecting piece; 721, connecting frame; 722, connecting shaft; 723, hairspring; 73, limit frame; 731, limit swing arm; 732, second through groove; 74, limit wheel; 741, limit wheel body; 742, positioning groove; 8, guide roller. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1 to 5 shown, the present utility model provides a wide-format printer with a paper limiting structure, including a printer. A paper changing mechanism is installed inside the printer. A paper changing bin is opened at the top of the paper changing mechanism. Two positioning rods are arranged inside the paper changing bin. One positioning head is connected to the adjacent ends of the two positioning rods through bearings. A paper roller is abutted between the two positioning heads. One limit mechanism is fixedly connected to the opposite ends of the two positioning heads;

[0024] Among them, due to the setting of the positioning head, with the cooperation of the positioning rod, the effect of fixing the paper roller can be achieved, and it can be applied to paper rollers with different diameters and lengths, so as to achieve the effect of facilitating the fixing of paper rollers of different specifications;

[0025] The limit mechanism includes a linkage frame fixedly sleeved on the side of the movable end of the positioning rod close to the positioning head. One connecting piece is fixedly connected to one end of the opposite surfaces of the two linkage frames close to the positioning rod. A limit frame is movably connected inside the connecting piece. The other end of the limit frame is far from the positioning rod and is movably connected to a limit wheel. The opposite surfaces of the two limit wheels are abutted against the left and right sides of the paper outside the paper roller;

[0026] Among them, due to the setting of the linkage frame, the connecting part can move with the positioning head, so that one end of the limiting mechanism can always adapt to one end of the paper roller, and the other end can make the limiting wheel roll and contact the side of the paper through the limiting frame under the elastic connection of the connecting part, thereby achieving the effect of adaptively limiting the paper.

[0027] As shown in the figure, a guide roller located in front of the positioning rod is installed inside the paper changing bin. Both ends of the guide roller are connected to the paper changing mechanism through bearings, and the paper on the paper roller contacts the bottom of the guide roller.

[0028] As shown in the figure and the figure, the linkage frame includes a linkage plate connected to the far ends of the two connecting parts, the axis of the linkage plate is perpendicular to the axis of the positioning rod, and a connecting hole is provided at one end of the linkage plate close to the positioning rod, and the linkage plate is fixedly sleeved on the outside of the positioning rod through the connecting hole.

[0029] As shown in the figure and the figure, the connecting member includes a connecting frame fixedly connected to the facing surfaces of the two linkage plates, a connecting shaft is movably installed inside the connecting frame, and the cross-section of the connecting shaft is an "I" shape; both ends of the connecting shaft pass through the limit frame and are fixedly connected to the inside of the connecting frame, and a spring is provided in the middle of the outer surface of the connecting shaft;

[0030] Among them, due to the setting of the connecting shaft, its two ends can have a good limiting effect on the swing of the limit swing arm, ensuring that the limit swing arm will not swing in other directions when it swings horizontally, and will not affect the setting of the clockwork spring.

[0031] As shown in the figure and the figure, the limit frame includes a limit swing arm interactively installed inside the connecting frame, one end of the limit swing arm is movably sleeved on the outside of the connecting shaft, the upper and lower ends of the outer surface of the connecting shaft are movably sleeved with the inner wall of one end of the limit swing arm, one end of the clockwork spring is connected to the middle part of the connecting shaft, and the other end of the clockwork spring is connected to the inner wall of the limit swing arm;

[0032] Among them, due to the setting of the clockwork spring, under the restriction of the connecting shaft, the elastic force of the clockwork spring can make the limit swing arm swing under the support of the paper, thereby ensuring that the limit wheel at the end of the limit swing arm can always be in contact with the side of the paper.

[0033] As shown in the figure, a second through groove is provided on the side of the limiting swing arm, a first through groove is provided on the side of the linkage plate, and the guide roller is passed through the first through groove and the second through groove; due to the setting of the first through groove and the second through groove, it is not only convenient to install and rotate the guide roller so as to guide paper of different widths, but also can provide a limit for the movement of the linkage plate and the limiting swing arm, ensuring that the linkage plate and the limiting swing arm are more stable during movement.

[0034] As shown in the figures, the limiting wheel includes a limiting wheel body movably installed at the other end of the limiting swing arm through a bearing. A positioning groove is formed on the outer surface of the limiting wheel body, and the inner wall of the positioning groove is smooth. The horizontal plane at the top of the inner cavity of the positioning groove is located below the horizontal planes at the bottoms of the inner cavities of the second through groove and the first through groove. Due to the setting of the positioning groove, it can ensure that both sides of the paper can be stably restricted inside the positioning groove with the cooperation of the guiding roller, so that the limiting wheel can more smoothly restrict both sides of the paper under the drive of the limiting swing arm.

[0035] The working principle and usage process of the present utility model are as follows:

[0036] Push to move the two positioning heads away from each other, then the paper roller can be placed between the two positioning heads. Then release the positioning heads, and the positioning heads can be pushed under the action of the elastic recovery of the positioning rod, so that the two positioning heads abut against both ends of the paper roller. Then, pass the front end of the paper of the paper roller around the bottom of the guiding roller and press it into the printing mechanism.

[0037] As the two positioning heads move, the linkage frame can drive the connecting piece and the limiting frame and the limiting wheel connected therein to move synchronously, so that the two connecting pieces always remain relatively stationary with the two positioning heads, and ensure that the adjacent ends of the two connecting pieces are flush with the remote ends of the two positioning heads. Furthermore, under the action of the restoring force of the spring, the limiting swing arm can swing, and drive the limiting wheel to swing in the direction close to the paper. And with the cooperation of the guiding roller, the positioning groove can be stuck on the side of the paper. At this time, under the elastic force of the spring, it is ensured that the two limiting wheels can restrict both sides of the paper to avoid the situation of paper deviation during transmission.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A wide-format printer with a paper limiting structure, comprising a printer (1), characterized in that: Inside the printer (1), a paper changing mechanism (2) is installed. At the top of the paper changing mechanism (2), a paper changing bin (3) is provided. Inside the paper changing bin (3), there are two positioning rods (4) on the left and right. At the proximal ends of the two positioning rods (4), a positioning head (5) is connected through a bearing. Between the two positioning heads (5), a paper roller (6) is abutted. At the distal ends of the two positioning heads (5), a limiting mechanism (7) is fixedly connected to each; The limiting mechanism (7) includes a linkage frame (71) fixedly sleeved on the side of the movable end of the positioning rod (4) close to the positioning head (5). At one end of the facing surfaces of the two linkage frames (71) close to the positioning rod (4), a connecting member (72) is fixedly connected. Inside the connecting member (72), a limiting frame (73) is movably connected. The other end of the limiting frame (73) is far from the positioning rod (4) and is movably connected to a limiting wheel (74). The facing surfaces of the two limiting wheels (74) are abutted against the left and right sides of the paper outside the paper roller (6).

2. The wide-format printer with a paper limiting structure according to claim 1, characterized in that: Inside the paper changing bin (3), a guiding roller (8) is installed in front of the positioning rod (4). The two ends of the guiding roller (8) are connected to the paper changing mechanism (2) through bearings. The paper on the paper roller (6) contacts the bottom of the guiding roller (8).

3. The wide-format printer with a paper limiting structure according to claim 2, characterized in that: The linkage frame (71) includes a linkage plate (711) connected to the distal ends of the two connecting members (72). The axis of the linkage plate (711) is perpendicular to the axis of the positioning rod (4). At one end of the linkage plate (711) close to the positioning rod (4), a connection hole (712) is provided. The linkage plate (711) is fixedly sleeved outside the positioning rod (4) through the connection hole (712).

4. The wide-format printer with a paper limiting structure according to claim 3, characterized in that: The connecting member (72) includes a connecting frame (721) fixedly connected to the facing surfaces of the two linkage plates (711). Inside the connecting frame (721), a connecting shaft (722) is movably installed. The cross-section of the connecting shaft (722) is in the shape of a "work" character; the two ends of the connecting shaft (722) penetrate through the limiting frame (73) and are fixedly connected inside the connecting frame (721). In the middle of the outer surface of the connecting shaft (722), a clockwork spring (723) is provided.

5. The wide-format printer with a paper limiting structure according to claim 4, wherein: The limiting frame (73) includes a limiting swing arm (731) interactively installed inside the connecting frame (721). One end of the limiting swing arm (731) is movably sleeved outside the connecting shaft (722). The upper and lower ends of the outer surface of the connecting shaft (722) are movably sleeved with the inner wall of one end of the limiting swing arm (731). One end of the clockwork spring (723) is connected to the middle of the connecting shaft (722), and the other end of the clockwork spring (723) is connected to the inner wall of the limiting swing arm (731).

6. The wide-format printer with a paper limiting structure according to claim 5, characterized in that: A second through groove (732) is provided on the side surface of the limiting swing arm (731), and a first through groove (713) is provided on the side surface of the linkage plate (711). The guiding roller (8) penetrates through the inside of the first through groove (713) and the second through groove (732).

7. The wide-format printer with a paper limiting structure according to claim 6, wherein: The limiting wheel (74) includes a limiting wheel body (741) movably mounted at the other end of the limiting swing arm (731) through a bearing. A positioning groove (742) is formed on the outer surface of the limiting wheel body (741). The inner wall of the positioning groove (742) is smooth. The horizontal plane where the top of the inner cavity of the positioning groove (742) is located is at the bottom of the horizontal planes where the bottoms of the inner cavities of the second through groove (732) and the first through groove (713) are located.

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