Printing paper limiting and adjusting device and printer

Abstract

The utility model discloses a printing paper limit adjusting device and printer, printing paper limit adjusting device includes fulcrum shaft, card slot, limit paper board, plectrum and fixture block, at least two fulcrum shaft is fixed in the interior of paper storehouse, a plurality of card slot is provided on the inner wall of paper storehouse, and a plurality of card slot is evenly provided along the fulcrum shaft direction, and the card slot is fixed in the paper storehouse. The paper limiting plate is installed on the fulcrum shafts in a sliding mode, the poking piece rotates on one fulcrum shaft, the poking piece is fixed to the position, opposite to the paper limiting plate, of the paper limiting plate in the fulcrum shaft direction, the clamping block is fixedly arranged on the poking piece, and the poking piece rotates to drive the clamping block to be located in one clamping groove. The paper limiting plate slides to the preset position relative to the fulcrum shaft, the clamping block is driven to rotate by rotating the shifting piece, then the clamping block is driven to be clamped into the clamping groove, the shifting piece is fixed, and due to the fact that the shifting piece and the paper limiting plate are fixed in the direction of the fulcrum shaft, when the clamping block is clamped into the clamping groove, the positions of the shifting piece and the paper limiting plate can be fixed. And the position of the paper limiting plate is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a printing paper limit adjustment device and a printer. Background Art

[0002] In the field of printing technology, to accommodate paper widths of varying widths, printers are typically equipped with a paper limit adjustment mechanism to ensure accurate and stable paper feed. Existing technologies employ an adjustment mechanism combining two racks with a damping gear. This mechanism uses a gear transmission to synchronously drive the opposite rack in the opposite direction, thereby moving the paper limit plates on either side of the printer closer or further apart, enabling flexible adjustment of paper width. This design not only improves paper adaptability but also, through the damping force provided by the damping gear, effectively maintains the position of the two racks and their corresponding paper limit plates after adjustment, ensuring accurate paper positioning during printing.

[0003] However, while this structure works reliably in most situations, it relies on the damping force of the damping gear to maintain the paper limiter in place. If the damping gear weakens or fails due to long-term use, wear, or environmental factors, the paper limiter will no longer be stably positioned. This can lead to problems such as inaccurate paper positioning and offset printing, affecting print quality and device reliability. Therefore, we provide a paper limiter adjustment device and printer to address these issues. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a printing paper limit adjustment device and a printer.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A printing paper limit adjustment device, comprising:

[0007] Support shafts, at least two of which are fixedly mounted inside the paper bin;

[0008] Card slots, wherein a plurality of the card slots are arranged on the inner wall of the paper bin, and the plurality of the card slots are evenly arranged along the direction of the support axis;

[0009] A paperboard limiter, the paperboard limiter being slidably mounted on the support shaft and capable of sliding about the support shaft;

[0010] a paddle, the paddle being rotated on one of the support shafts, and the paddle being fixed relative to the limiting paperboard in the direction of the support shaft, and the paddle being able to rotate about the support shaft;

[0011] A card block is fixedly arranged on the paddle, and the paddle rotates to drive the card block to be located in one of the card slots.

[0012] Preferably, a locking mechanism is provided between the limiting paperboard and the paddle, the locking mechanism includes a first locking tooth provided on the border of the limiting paperboard, and the locking mechanism also includes a second locking tooth provided on the border of the paddle, and the second locking tooth can be engaged with or separated from the first locking tooth when the paddle rotates.

[0013] Preferably, a limiting structure is provided between the limiting paperboard and the side surfaces of the paddle that are close to each other, the limiting structure includes an avoidance groove that is opened on the paddle along the direction of the support axis, a limiting surface is formed on the avoidance groove, a connecting column is fixedly provided on the side surface of the limiting paperboard facing the paddle direction, at least one limiting block is fixedly provided on the outer surface of the connecting column, and the limiting surface is located between the limiting block and the limiting paperboard.

[0014] Preferably, an elastic wall is provided on the outer wall of the limiting paperboard, and the second latching tooth is provided on the elastic wall.

[0015] Preferably, a toggle block is fixedly provided on the outer wall of the elastic wall.

[0016] Preferably, a receiving groove is provided on a side of the limiting paper board facing the direction of the paddle, the paddle is located in the receiving groove, and the paddle can rotate to a preset angle in the receiving groove.

[0017] Preferably, a limiting groove is provided on the elastic wall, and the limiting paperboard portion penetrates into the limiting groove.

[0018] Preferably, unlocking and / or locking marks are provided on the side of the limiting paper board.

[0019] The present application also provides a printer, comprising the printing paper limit adjustment device described in any one of the above items.

[0020] The utility model has the following advantages:

[0021] 1. The limiting paperboard of the utility model slides to a preset position about the support shaft, and the card block is driven to rotate by rotating the paddle, and then the card block is driven to be inserted into the card slot to fix the paddle. Since the paddle and the limiting paperboard are fixed in the direction of the support shaft, the position of the paddle and the limiting paperboard can be fixed when the card block is inserted into the card slot, thereby realizing the adjustment of the position of the limiting paperboard.

[0022] 2. In the present invention, when the paddle rotates about one of the support shafts, the first latching tooth is driven to move in the opposite direction to the second latching tooth, and when the card block is located in the card slot, the first latching tooth is engaged with the second latching tooth, thereby limiting the rotation direction of the paddle and preventing the card block from falling out of the card slot.

[0023] 3. The utility model sets a limiting surface between the limiting block and the side of the limiting paperboard, that is, through the clamping connection between the limiting surface and the limiting block, the limiting paperboard is limited along the support axis direction, so that the limiting paperboard and the paddle are fixed in the axial direction of the support axis, so that the two can move synchronously or be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the state in which the limit adjustment device of the utility model is assembled into the paper bin of a printer.

[0025] Figure 2 This is a schematic diagram of the position of the card slot of the utility model in the paper bin.

[0026] Figure 3 This is a schematic diagram of the overall structure of the regulating device of the present utility model.

[0027] Figure 4 This is a schematic diagram of the plectrum structure of the present invention.

[0028] Figure 5 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0029] Figure 6 This is a schematic diagram of the state in which the limiting paperboard portion of the utility model is located in the limiting groove.

[0030] In the figure, 100, support shaft; 200, slot; 300, limiting paperboard; 400, paddle; 500, clamping block; 600, clamping mechanism; 610, first clamping tooth; 620, second clamping tooth; 700, limiting structure; 710, avoidance groove; 720, limiting surface; 730, connecting column; 740, limiting block; 800, elastic wall; 900, toggle block; 1000, accommodating groove; 1100, limiting groove. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] like Figure 1 — Figure 6 The embodiment shown.

[0034] The existing printer paper width limit adjustment structure generally adopts a damping gear plus double rack structure, that is, the damping gear is located between two racks arranged parallel to each other, and the damping gear is meshed with the two racks. A limit plate is installed on each rack. When one of the racks or the limit plate moves, the other rack will also move through the transmission of the damping gear, thereby causing the two racks to drive the two limit plates to move closer to or away from each other. When they move to the predetermined position, the positions of the two racks are fixed by the damping force of the damping gear. However, if the damping force of the damping gear is weakened or fails after long-term use, the position of the limit plate cannot be guaranteed. For this reason, the present application adopts the method of rotating 400 to drive 500 deep into 200 on the inner wall of the paper bin to fix the position of 400. Furthermore, the relative positions of 400 and 300 in the axial direction of 100 remain unchanged. Therefore, if the position of 400 is fixed, the position of 300 is also fixed, thereby realizing the determination of the position of 300.

[0035] Specifically, the present application provides a printing paper position limiting and adjusting device, which includes a support shaft 100 , a card slot 200 , a paper limiting plate 300 , a paddle 400 and a card block 500 .

[0036] Specifically, in the present application, at least two of the support shafts 100 are fixedly installed inside the paper bin, several of the card slots 200 are arranged on the inner wall of the paper bin, and several of the card slots 200 are evenly arranged along the direction of the support shaft 100, the limiting paper board 300 is slidably installed on the support shaft 100, and the limiting paper board 300 can slide about the support shaft 100, the paddle 400 rotates on one of the support shafts 100, and the paddle 400 is fixed in a relative position to the limiting paper board 300 in the direction of the support shaft 100, the paddle 400 can rotate about the support shaft 100, the card block 500 is fixedly set on the paddle 400, and the rotation of the paddle 400 drives the card block 500 to be located in one of the card slots 200.

[0037] See details Figures 1 to 3As shown, in this embodiment, there are two support shafts 100, which are fixedly mounted on the side walls of the printer paper bin, the limiting paper board 300 is slidably mounted on the support shafts 100, and the paddle 400 is slidably mounted on one of the support shafts 100, and the paddle 400 can rotate a certain angle about the support shaft 100 to which it is rotatably connected, thereby changing the position of the card block 500, so that the card block 500 enters or leaves the card slot 200. Specifically, the card slot 200 is opened on the inner bottom wall of the paper bin, and there are multiple card slots 200. The specific number can be set as needed, and the specific number is not limited. The card slots 200 are evenly distributed about the axial direction of the support shaft 100. In this embodiment, the support shaft 100 is cylindrical. Accordingly, corresponding circular holes should also be opened on the limiting paper board 300 and the paddle 400. The support shaft 100 is passed through the circular hole so that the limiting paper board 300 and the paddle 400 are connected to the support shaft 100.

[0038] In the initial state, the card block 500 is disengaged from the card slot 200, that is, the card block 500 is not engaged with the card slot 200. By pushing the limiting paper board 300, the paddle 400 is driven to slide synchronously on the support shaft 100, so that the limiting paper board 300 and the paddle 400 are moved to the predetermined position according to the width of the paper. Then, it is only necessary to toggle the paddle 400 to drive the card block 500 to rotate toward the card slot 200. After the paddle 400 rotates a certain angle, the card block 500 enters one of the card slots 200. At this time, the card block 500 is engaged with the card slot 200, that is, the card block 500 cannot move along the axial direction of the support shaft 100, thereby fixing the position of the paddle 400 along the axial direction of the support shaft 100, thereby also fixing the position of the limiting paper board 300, and further adjusting the position of the limiting paper board 300 according to different paper widths.

[0039] A locking mechanism 600 is provided between the paper limiting cardboard 300 and the paddle 400. The locking mechanism 600 includes a first locking tooth 610 provided on the border of the paper limiting cardboard 300. The locking mechanism 600 also includes a second locking tooth 620 provided on the border of the paddle 400. The second locking tooth 620 can be engaged with or separated from the first locking tooth 610 when the paddle 400 rotates.

[0040] See Figure 3As shown, when the paddle 400 is toggled, the second tooth 620 will gradually move toward the first tooth 610, and the block 500 will move toward the slot 200. As the paddle 400 continues to rotate, the second tooth 620 will engage with the first tooth 610, and the block 500 will penetrate into the slot 200. At this time, the paddle 400 cannot continue to rotate. For this reason, the block 500 will stay in the state of engaging with the slot 200, thereby fixing the positions of the paddle 400 and the limiting paperboard 300. At this time, the limiting paperboard 300 and the paddle 400 cannot move in the axial direction of the support shaft 100, thereby adjusting the position of the limiting paperboard 300.

[0041] It should be noted that when the position of the limiting paperboard 300 needs to be adjusted again, it is only necessary to rotate the paddle 400 in the opposite direction to separate the second latch tooth 620 from the first latch tooth 610. At this time, the card block 500 will also be separated from the card slot 200, so that the card block 500 and the card slot 200 are also in a separated state. Therefore, the limiting paperboard 300 and the paddle 400 are no longer limited in position in the axial direction of the support shaft 100. The limiting paperboard 300 and the paddle 400 can slide on the support shaft 100 to change the position of the limiting paperboard 300 and the paddle 400.

[0042] In this embodiment, the first latching teeth 610 and the second latching teeth 620 are tooth-shaped, and the number of the first latching teeth 610 is not limited here.

[0043] A limiting structure 700 is provided between the side surfaces of the limiting paperboard 300 and the paddle 400 that are close to each other. The limiting structure 700 includes an avoidance groove 710 that is opened on the paddle 400 along the direction of the support shaft 100. A limiting surface 720 is formed on the avoidance groove 710. A connecting column 730 is fixedly provided on the side surface of the limiting paperboard 300 facing the paddle 400. At least one limiting block 740 is fixedly provided on the outer surface of the connecting column 730, and the limiting surface 720 is located between the limiting block 740 and the limiting paperboard 300.

[0044] A receiving groove 1000 is formed on a side of the paper limiting plate 300 facing the paddle 400 . The paddle 400 is located in the receiving groove 1000 and can rotate to a preset angle in the receiving groove 1000 .

[0045] See also Figure 3 、 Figure 4 and Figure 5 As shown, in order to ensure that the positions of the limiting paperboard 300 and the paddle 400 in the axial direction of the support shaft 100 remain unchanged, a limiting structure 700 is set between the limiting paperboard 300 and the paddle 400. Through the limiting structure 700, when the paddle 400 rotates relative to the limiting paperboard 300 without motion interference, the positions of the two in the axial direction of the support shaft 100 can also remain unchanged.

[0046] Specifically, a receiving groove 1000 is opened on the side of the limiting paper board 300 facing the direction of the paddle 400, and the paddle 400 can rotate to a certain angle in the receiving groove 1000. It should be noted that the angle satisfies the rotation of the paddle 400 so that the blocking block 500 penetrates into the slot 200 and the second locking tooth 620 is engaged with the first locking tooth 610. The specific angle that the receiving groove 1000 can rotate the paddle 400 while meeting the above requirements is not limited here.

[0047] Please continue reading Figure 3 and Figure 4 In this embodiment, a avoidance groove 710 is formed on the paddle 400, and a limiting surface 720 is formed at the opening of the avoidance groove 710, that is, the avoidance groove 710 is now a stepped hole as a whole, and the limiting surface 720 is the stepped surface of the stepped hole. The connecting post 730 is fixedly arranged on the side of the limiting paper board 300, and the connecting post 730 is deeply inserted into the stepped hole. The limiting block 740 on the outer surface of the connecting post 730 is located on the stepped surface, and the stepped surface is located between the limiting block 740 and the limiting paper board 300.

[0048] It should be noted that the shape of the avoidance groove 710 satisfies the requirement that the inner wall of the avoidance groove 710 does not interfere with the movement of the connecting column 730 when the paddle 400 rotates, and the limiting surface 720 is always between the limiting block 740 and the limiting paper board 300 during the rotation of the paddle 400. The purpose of this is to limit the limiting paper board 300 in the axial direction of the support shaft 100 during the rotation of the paddle 400, thereby preventing the limiting paper board 300 from separating from the paddle 400.

[0049] An elastic wall 800 is provided on the outer wall of the limiting paperboard 300 , and the second latching teeth 620 are provided on the elastic wall 800 .

[0050] See Figure 3 and Figure 4 As shown, in order to make it easier for the second latching tooth 620 to engage with the first latching tooth 610, the second latching tooth 620 is set on the elastic wall 800. When the second latching tooth 620 is about to engage with the first latching tooth 610, the second latching tooth 620 transfers the force acting on it to the elastic wall 800, causing the elastic wall 800 to deform to a certain extent, thereby making it easier for the second latching tooth 620 to engage with the first latching tooth 610.

[0051] The outer wall of the elastic wall 800 is fixed with a toggle block 900; Figure 3 and Figure 4 As shown, in order to facilitate the rotation of the paddle 400 , a paddle block 900 is provided on the elastic wall 800 , so that force is applied to the paddle 400 through the paddle block 900 during the paddle movement.

[0052] It should be noted that the paddle 400 , the elastic wall 800 and the toggle block 900 are integrally formed and can be processed by injection molding or other methods, and the specific molding method is not limited here.

[0053] A limiting groove 1100 is defined on the elastic wall 800 , and a portion of the limiting paper board 300 extends into the limiting groove 1100 .

[0054] Continue reading Figure 3 、 Figure 4 as well as Figure 6 As shown, in order to further limit the fixation of the limiting paperboard 300 and the paddle 400 in the axial direction of the support shaft 100, a limiting groove 1100 is opened on the elastic wall 800. The limiting groove 1100 is located on the side of the protruding part of the elastic wall 800 facing the outer wall of the limiting paperboard 300, and part of the limiting paperboard 300 penetrates into the limiting groove 1100. At this time, the upper limit paperboard 300 and the limiting groove 1100 are snapped together in the axial direction of the support shaft 100, thereby realizing the limitation of the axial position of the limiting paperboard 300 in the support shaft 100.

[0055] The side of the limiting paper board 300 is provided with unlocking and / or locking markings (not shown in the figure), which are used to indicate to the user which direction to rotate for unlocking or locking.

[0056] The present application also provides a printer, comprising the printing paper limit adjustment device described in any one of the above items.

[0057] When the locking plate 300 is in the locked position, the second tooth 620 is moved toward the first tooth 610 and the locking plate 500 is moved toward the locking plate 200. When the locking plate 300 is in the locked position, the second tooth 620 is moved toward the first tooth 610 and the locking plate 500 is moved toward the locking plate 200. When the locking plate 500 is in the locked position, the second tooth 620 is also engaged with the first tooth 610. At this time, the locking plate 400 cannot move because the locking plate 500 is engaged with the locking plate 200. Since the locking plate 400 and the limiting cardboard 300 are fixed in the axial direction of the supporting shaft 100, the limiting cardboard 300 cannot move. Therefore, the position of the limiting cardboard 300 is adjusted. At this time, the locking plate 400 and the limiting cardboard 300 are in a locked state.

[0058] When it is necessary to continue adjusting the position of the limiting paper board 300, it is only necessary to rotate the paddle 400 in the opposite direction to disengage the blocking block 500 from the card slot 200, and the second locking tooth 620 is separated from the first locking tooth 610. The paddle 400 is no longer limited in the axial direction of the support shaft 100. At this time, the paddle 400 and the limiting paper board 300 are in the unlocked state, and the paddle 400 and the limiting paper board 300 can move axially. After the limiting paper board 300 is moved to the predetermined position, the above locking operation can be repeated.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A printing paper limit adjustment device, characterized in that: include: Support shafts (100), at least two of the support shafts (100) are fixedly installed inside the paper bin; A card slot (200), wherein a plurality of the card slots (200) are arranged on the inner wall of the paper bin, and the plurality of the card slots (200) are evenly arranged along the direction of the support shaft (100); A limiting paperboard (300), the limiting paperboard (300) is slidably mounted on the support shaft (100), and the limiting paperboard (300) is capable of sliding about the support shaft (100); a paddle (400), the paddle (400) being rotated on one of the support shafts (100), and the paddle (400) being fixed relative to the limiting paperboard (300) in the direction of the support shaft (100), and the paddle (400) being capable of rotating about the support shaft (100); A card block (500) is fixedly arranged on the paddle (400), and the paddle (400) rotates to drive the card block (500) to be located in one of the card slots (200).

2. The printing paper limit adjustment device according to claim 1, characterized in that: A latching mechanism (600) is provided between the limiting paperboard (300) and the plectrum (400), the latching mechanism (600) comprising a first latching tooth (610) provided on the frame of the limiting paperboard (300), the latching mechanism (600) further comprising a second latching tooth (620) provided on the frame of the plectrum (400), the second latching tooth (620) being capable of latching or disengaging with the first latching tooth (610) when following the rotation of the plectrum (400).

3. The printing paper limit adjustment device according to claim 1, characterized in that: A limiting structure (700) is provided between the mutually adjacent sides of the limiting paperboard (300) and the plectrum (400), the limiting structure (700) comprising an avoidance groove (710) extending along the direction of the support shaft (100) and extending through the plectrum (400), a limiting surface (720) being formed on the avoidance groove (710), a connecting column (730) being fixedly provided on the side of the limiting paperboard (300) facing the plectrum (400), at least one limiting block (740) being fixedly provided on the outer surface of the connecting column (730), and the limiting surface (720) being located between the limiting block (740) and the limiting paperboard (300).

4. The printing paper limit adjustment device according to claim 2, characterized in that: An elastic wall (800) is provided on the outer wall of the limiting paperboard (300), and the second latching tooth (620) is provided on the elastic wall (800).

5. The printing paper limit adjustment device according to claim 4, characterized in that: A toggle block (900) is fixedly provided on the outer wall of the elastic wall (800).

6. The printing paper limit adjustment device according to claim 1, characterized in that: A receiving groove (1000) is provided on the side of the limiting paperboard (300) facing the direction of the paddle (400), the paddle (400) is located in the receiving groove (1000), and the paddle (400) can rotate to a preset angle in the receiving groove (1000).

7. The printing paper limit adjustment device according to claim 4, characterized in that: A limiting groove (1100) is provided on the elastic wall (800), and a portion of the limiting paperboard (300) penetrates into the limiting groove (1100).

8. The printing paper limit adjustment device according to claim 1, characterized in that: The side of the limiting paper board (300) is provided with an unlocking and / or locking mark.

9. A printer, characterized in that: It comprises the printing paper limit adjustment device according to any one of claims 1 to 8.

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