A roller support structure and a printer

Abstract

The utility model relates to the technical field of printer, disclose a kind of roll support structure and printer. Roll support structure includes first connecting piece, one side is used to with one of roll shaft stop resistance;Second connecting piece, slidingly set in first connecting piece;The end of second connecting piece away from first connecting piece is used to with another roll shaft stop resistance;Driving part, set in first connecting piece, and with second connecting piece connection, for driving second connecting piece moves along the axial direction of first connecting piece;Printer includes two roll shafts and several roll support structures, and several roll support structures are set between two roll shafts, and stop resistance with two roll shafts respectively. The utility model discloses the technical scheme to solve the technical problem that the roll shaft is bent to the inside in the printer in the related art.

Description

Technical Field

[0001] This utility model relates to the field of printer technology, and in particular to a roller support structure and a printer. Background Technology

[0002] A printer quickly and accurately converts digital information such as electronic documents and images into visual paper copies. It can output clear black-and-white or color text and charts, as well as reproduce photos and complex images with high quality, meeting a variety of needs from everyday office documents to professional design drafts.

[0003] The printer has two rollers with a conveyor belt mounted on them to move the object to be printed along the Y-axis. However, the two rollers are prone to bending inward under the tension of the conveyor belt, which affects their lifespan. Summary of the Invention

[0004] This application discloses a roller support structure and a printer to solve the technical problem of roller axial inward bending in printers in related technologies.

[0005] To solve the above problems, the present invention adopts the following technical solution: In a first aspect, this application discloses a roller support structure for use in a printer, comprising: The first connecting member has one side designed to abut against one of the roller shafts; The second connector is slidably disposed on the first connector; the end of the second connector away from the first connector is used to abut against another roller. A driving component is disposed on the first connecting component and connected to the second connecting component, and is used to drive the second connecting component to move axially along the first connecting component.

[0006] In some embodiments, the first connector includes a first rod and a first support, one end of the first rod being connected to the first support, and the first support being used to abut against one of the rollers; The second connector is slidably disposed on the first rod, and the driving component is disposed on the first rod.

[0007] In some embodiments, the second connector includes a second rod and a second support, one end of the second rod being slidably connected to the first rod and the other end being connected to the second support, which is used to abut against another roller.

[0008] In some embodiments, the first support includes a first mounting frame and two first rollers, one end of the first rod is connected to the first mounting frame, and the two first rollers are rotatably disposed on both sides of the first mounting frame and are used to abut against one of the roller shafts; And / or, the second support includes a second mounting frame and two second rollers, one end of the second rod is connected to the second mounting frame, and the two second rollers are rotatably disposed on both sides of the second mounting frame and are used to abut against another roller shaft.

[0009] In some designs, the first mounting bracket is fitted with two sides of the first roller that bend toward one of the roller shafts; And / or, the second mounting bracket is fitted with the second rollers, both sides of which are bent toward the other roller shaft.

[0010] In some designs, the drive unit includes a lead screw, a slider, and a connecting rod. The lead screw is rotatably mounted on a first rod body and is connected to the slider. One end of the connecting rod is rotatably connected to the slider, and the other end is rotatably connected to a second rod body.

[0011] In some designs, the second rod has a mounting groove that extends axially along the first rod; one end of the lead screw passes through the mounting groove.

[0012] In some designs, the first support is detachably connected to the first rod. And / or, the second support is detachably connected to the second rod.

[0013] In some designs, the first rod has a limiting groove extending through one side along its axial direction, and the second rod is slidably disposed within the limiting groove; The first rod is provided with a guide groove that extends along the axial direction of the first rod; the end of the connecting rod passes through the guide groove and is rotatably connected to the second rod.

[0014] Secondly, this application also discloses a printer, including two rollers and a plurality of roller support structures as described in the first aspect, wherein the plurality of roller support structures are disposed between the two rollers and respectively abut against the two rollers.

[0015] The technical solution adopted in this utility model can achieve the following beneficial effects: The roller support structure of this application is installed between the two roller shafts of the printer and abuts against the two roller shafts respectively, forming a reinforced structure. It provides an intermediate support point for the slender roller shafts and can directly counteract the radial force generated by the conveyor belt tension, which attempts to bend the two rollers axially inward. This avoids the bending deformation of the roller shafts, effectively prevents the conveyor belt from running off-track and wearing due to the bending of the roller shafts, significantly extends its fatigue life, and improves the long-term reliability and durability of the printer. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are isometric views of the roller support structure disclosed in some embodiments of this application; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged view of point B in the middle; Figure 4 yes Figure 1 Enlarged view of point C in the middle; Figure 5 This is a schematic diagram of the fit between the second rod and the lead screw disclosed in some embodiments of this application; Figure 6 This is an isometric view of the first connector disclosed in some embodiments of this application; Figure 7 This is a partial structural schematic diagram of a printer disclosed in some embodiments of this application.

[0018] In the picture: 100 - Roller support structure, 110 - First connector, 111 - First rod, 1111 - Guide groove, 1112 - Limiting groove, 112 - First support part, 1121 - First mounting frame, 1122 - First roller, 120 - Second connector, 121 - Second rod, 1211 - Mounting groove, 122 - Second support part, 1221 - Second mounting frame, 1222 - Second roller, 130 - Drive component, 131 - Lead screw, 132 - Slider, 133 - Connecting rod; 200 - Printer, 210 - Roller, 220 - Conveyor belt. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] The inventors discovered in practical use that, due to the certain length of the printer's rollers, the conveyor belt fitted onto the rollers applies a certain tension to the two rollers. Under the action of this tension, the slender rollers, which lack sufficient bending stiffness, will bend and deform like a beam, collapsing inward. This bending not only exacerbates conveyor belt misalignment, wear, and uneven printing platform, but also subjects the rollers to alternating stress during rotation, ultimately reducing their service life due to metal fatigue, and even leading to breakage.

[0022] The following is in conjunction with the appendix Figures 1 to 7 The present application provides a detailed description of a roller support structure 100 and a printer 200 through specific embodiments and application scenarios.

[0023] Some embodiments of this application provide a roller support structure 100 applied to a printer 200, including a first connector 110, a second connector 120, and a drive member 130.

[0024] like Figure 1 and Figure 3 As shown, one side of the first connector 110 is used to abut against one of the rollers 210, and the second connector 120 is disposed on the first connector 110, with the end of the second connector 120 away from the first connector 110 used to abut against the other roller 210. The first connector 110 and the second connector 120 are located between the two rollers 210 and abut against the two rollers 210 respectively, forming a reinforced structure. This provides an intermediate support point for the slender rollers 210, which can directly counteract the radial force generated by the tension of the conveyor belt 220 that attempts to bend the two rollers 210 inward, thereby avoiding bending deformation of the rollers 210. This effectively prevents the conveyor belt 220 from running off-track and wearing due to bending of the rollers 210, significantly extending its fatigue life and improving the long-term reliability and durability of the printer 200.

[0025] like Figure 1As shown, the second connector 120 is slidably connected to the first connector 110. By sliding the second connector 120, the total length of the roller support structure 100 formed by the two first connectors 110 and the second connector 120 can be adjusted, thereby precisely adapting to different preset roller shaft 210 spacings and applying an adjustable pre-support force opposite to the tension of the conveyor belt 220, thus actively counteracting the bending tendency of the roller shaft 210. Even if the roller shaft 210 of the printer 200 experiences minor wear or loosening after long-term operation, the sliding design of the first connector 110 and the second connector 120 can maintain the optimal support effect by adjusting the length, ensuring the continuous effectiveness and stability of the reinforcement.

[0026] like Figure 1 and Figure 2 As shown, the drive member 130 is disposed on the first connector 110 and connected to the second connector 120, and is used to drive the second connector 120 to move axially along the first connector 110. The position of the second connector 120 is axially controlled by the drive member 130, which makes it easy for the operator to adjust the position of the second connector 120, thereby quickly adjusting the total length of the roller support structure 100.

[0027] like Figure 3 As shown, the first connector 110 includes a first rod 111 and a first support portion 112. One end of the first rod 111 is connected to the first support portion 112, which is used to abut against one of the rollers 210. The first rod 111 provides a mounting base for the first support portion 112, which can better adapt to the surface contour of the roller 210, providing a larger abutment contact area, thereby significantly improving stress distribution and avoiding local stress concentration that could cause pressure damage to the roller 210.

[0028] In this embodiment, the second connector 120 is slidably disposed on the first rod 111, and the driving member 130 is disposed on the first rod 111.

[0029] like Figure 3As shown, the first support 112 includes a first mounting frame 1121 and two first rollers 1122. One end of the first rod 111 is connected to the first mounting frame 1121. The two first rollers 1122 are rotatably disposed on both sides of the first mounting frame 1121 and are used to abut against one of the roller shafts 210. The two first rollers 1122 form two stable rolling support points, which can roll flexibly with the rotation of the roller shaft 210, thereby converting the previous sliding friction with the roller shaft 210 into rolling friction. This reduces the frictional resistance when the first support 112 contacts the roller shaft 210 and the running noise when the roller shaft 210 rotates. It effectively avoids wear, scratches or deformation of the roller shaft 210 surface that may be caused by static friction, ensuring the accuracy and integrity of the roller shaft 210 itself. Furthermore, the arrangement of the two first rollers 1122 disperses the concentrated stress, making the support of the roller shaft 210 more uniform and stable. While providing reliable rigid support, it minimizes interference and damage to the rotational movement of the roller shaft 210, thereby improving the smoothness of the transmission and the long-term durability of the printer 200.

[0030] like Figure 4 As shown, the second connector 120 includes a second rod 121 and a second support portion 122. One end of the second rod 121 is slidably connected to the first rod 111, and the other end is connected to the second support portion 122. The second support portion 122 is used to abut against another roller 210. The second rod 121 provides a mounting base for the second support portion 122. The second support portion 122 can better adapt to the surface contour of the roller 210, providing a larger abutment contact area, thereby significantly improving stress distribution and avoiding local stress concentration that could cause pressure damage to the roller 210.

[0031] like Figure 4 As shown, the second support 122 includes a second mounting frame 1221 and two second rollers 1222. One end of the second rod 121 is connected to the second mounting frame 1221. The two second rollers 1222 are rotatably mounted on both sides of the second mounting frame 1221 and are used to abut against another roller shaft 210. The two second rollers 1222 form two stable rolling support points, which can roll flexibly with the rotation of the roller shaft 210, thereby converting the previous sliding friction with the roller shaft 210 into rolling friction. This reduces the frictional resistance when the second support 122 contacts the roller shaft 210 and the running noise when the roller shaft 210 rotates. It effectively avoids wear, scratches or deformation of the roller shaft 210 surface that may be caused by static friction, ensuring the accuracy and integrity of the roller shaft 210 itself. Furthermore, the arrangement of the two second rollers 1222 disperses the concentrated stress, making the support of the roller shaft 210 more uniform and stable. While providing reliable rigid support, it minimizes interference and damage to the rotational movement of the roller shaft 210, thereby improving the smoothness of the transmission and the long-term durability of the printer 200.

[0032] like Figure 3 As shown, the first mounting bracket 1121, on which the first roller 1122 is mounted, bends towards one of the roller shafts 210. The bent sides of the first mounting bracket 1121 act as guide grooves, naturally and precisely guiding the first roller 1122 to an ideal position on the outer surface of the roller shaft 210 during installation. This effectively prevents the first mounting bracket 1121 from twisting under stress, greatly improving the ease of installation and the overall stability of the structure. Furthermore, the bent structure enhances the rigidity of the first mounting bracket 1121 itself and distributes potential stress more evenly. This provides strong support while minimizing potential damage to the roller shaft 210 and its own structure caused by stress concentration, significantly improving the reliability and durability of the roller support structure 100.

[0033] like Figure 4 As shown, the second mounting bracket 1221, on which the second roller 1222 is mounted, bends towards the other roller shaft 210 on both sides. The bent sides of the second mounting bracket 1221 act as guide grooves, naturally and precisely guiding the second roller 1222 to an ideal position on the outer surface of the roller shaft 210 during installation. This effectively prevents the second mounting bracket 1221 from twisting under stress, greatly improving the ease of installation and the overall stability of the structure. Furthermore, the bent structure enhances the rigidity of the second mounting bracket 1221 itself and distributes potential stress more evenly. This provides strong support while minimizing potential damage to the roller shaft 210 and its own structure caused by stress concentration, significantly improving the reliability and durability of the roller support structure 100.

[0034] like Figure 1 and Figure 2 As shown, the driving component 130 includes a lead screw 131, a slider 132, and a connecting rod 133. The lead screw 131 is rotatably mounted on the first rod body 111 and is connected to the slider 132. One end of the connecting rod 133 is rotatably connected to the slider 132, and the other end is rotatably connected to the second rod body 121. When the lead screw 131 is rotated, the slider 132, which is threaded to it, moves smoothly along the axis of the lead screw 131. This, in turn, pushes or pulls the second rod body 121 through the connecting rod 133, which is rotatably connected at both ends, to adjust the position of the second connecting component 120. The lead screw 131 transmission has self-locking characteristics and high displacement accuracy, enabling stepless adjustment and reliable maintenance of the support force of the roller support structure 100, ensuring the long-term stability of the support force to counteract the bending of the roller shaft 210.

[0035] like Figure 5As shown, the second rod 121 is provided with a mounting groove 1211, which extends axially along the first rod 111; one end of the lead screw 131 passes through the mounting groove 1211. The mounting groove 1211 provides a sufficiently long free movement space for the end of the lead screw 131, unconstrained by the fixing screw hole. This ensures that when the second rod 121 slides and extends relative to the first rod 111, there will be no harmful rigid interference between the lead screw 131 and the second rod 121 due to minor differences in axiality or manufacturing errors, thus ensuring smooth adjustment. Furthermore, since the length of the mounting groove 1211 directly determines the maximum distance that the second rod 121 can move, this support structure can be adapted to various printer models 200 with different roller shaft 210 spacings, greatly improving the versatility and modularity of the design, and achieving the goal of high compatibility with multiple working conditions using a single component.

[0036] The first support part 112 is detachably connected to the first rod 111. This detachable connection facilitates the replacement and maintenance of the first support part 112. Furthermore, it allows for the replacement of different sized first support parts 112 with different printer sizes 200, ensuring effective support for rollers 210 of varying diameters. This significantly improves the versatility and adaptability of the roller support structure 100.

[0037] The second support 122 is detachably connected to the second rod 121. This detachable connection facilitates the replacement and maintenance of the second support 122. Furthermore, it allows for the replacement of different sized second support 122 units with different printer sizes 200, ensuring effective support for rollers 210 of varying diameters. This significantly improves the versatility and adaptability of the roller support structure 100.

[0038] like Figure 6 As shown, the first rod 111 has a limiting groove 1112 extending through one side along its axial direction, and the second rod 121 is slidably disposed within the limiting groove 1112. The groove wall of the limiting groove 1112 can tightly wrap around and constrain the second rod 121, ensuring that it always moves linearly along the axial direction of the first rod 111 during the extension and retraction adjustment process, effectively eliminating any possibility of radial movement or circumferential torsion, and ensuring smooth movement of the second rod 121.

[0039] like Figure 2As shown, the first rod 111 is provided with a guide groove 1111, which extends axially along the first rod 111. The end of the connecting rod 133 passes through the guide groove 1111 and is rotatably connected to the second rod 121. By providing the guide groove 1111, the end of the connecting rod 133 can pass through the guide groove 1111 and be rotatably connected to the second rod 121. Furthermore, during the movement of the second rod 121, the connecting rod 133 can move along the extension direction of the guide groove 1111, thereby avoiding motion interference.

[0040] Some embodiments of this application also provide a printer 200, including two rollers 210 and a plurality of roller support structures 100.

[0041] like Figure 7 As shown, several roller support structures 100 are disposed between two roller shafts 210 and abut against each of the two roller shafts 210 respectively. By distributing several roller support structures 100 between the two roller shafts 210 and abutting against each of the two roller shafts 210 respectively, continuous and uniform support is provided at multiple key points along the span of the roller shafts 210. This distributed support scheme can effectively decompose and transfer the huge bending moment that was originally borne alone by the middle of the roller shaft 210 to each support point, thereby significantly reducing the overall bending deformation tendency of the roller shaft 210, significantly improving the overall rigidity and stability of the roller shaft 210, ensuring the accuracy and smoothness of the conveyor belt 220's running trajectory, and further reducing the local stress at each support point to avoid damage caused by stress concentration, thus comprehensively extending the mechanical life of the roller shaft 210 and related transmission components, ultimately ensuring that the printer 200 can maintain high precision and high reliability even after long-term use.

[0042] In this embodiment, the number of roller support structures 100 can be flexibly set according to usage requirements, specifically one, two, three or more, and this embodiment does not limit this.

[0043] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0044] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0045] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A roller support structure, applied to a printer, characterized in that, include: The first connecting member has one side designed to abut against one of the roller shafts; The second connector is slidably disposed on the first connector; The end of the second connector away from the first connector is used to abut against another roller. A driving component is disposed on the first connecting component and connected to the second connecting component, for driving the second connecting component to move axially along the first connecting component.

2. The roller support structure according to claim 1, characterized in that, The first connector includes a first rod and a first support portion, one end of the first rod is connected to the first support portion, and the first support portion is used to abut against one of the rollers; The second connector is slidably disposed on the first rod, and the driving component is disposed on the first rod.

3. The roller support structure according to claim 2, characterized in that, The second connector includes a second rod and a second support. One end of the second rod is slidably connected to the first rod, and the other end is connected to the second support. The second support is used to abut against another roller.

4. The roller support structure according to claim 3, characterized in that, The first support includes a first mounting frame and two first rollers. One end of the first rod is connected to the first mounting frame. The two first rollers are rotatably disposed on both sides of the first mounting frame and are used to abut against one of the roller shafts. And / or, the second support includes a second mounting frame and two second rollers, one end of the second rod is connected to the second mounting frame, and the two second rollers are rotatably disposed on both sides of the second mounting frame and are used to abut against another roller shaft.

5. A roller support structure according to claim 4, characterized in that, The first mounting bracket has the first roller mounted on both sides bent toward one of the roller shafts; And / or, the second mounting bracket is mounted on both sides of the second roller, which are bent toward another roller shaft.

6. A roller support structure according to claim 3, characterized in that, The driving component includes a lead screw, a slider, and a connecting rod. The lead screw is rotatably mounted on the first rod body and is connected to the slider. One end of the connecting rod is rotatably connected to the slider, and the other end is rotatably connected to the second rod body.

7. A roller support structure according to claim 6, characterized in that, The second rod body is provided with a mounting groove, which extends along the axial direction of the first rod body; one end of the lead screw passes through the mounting groove.

8. A roller support structure according to claim 3, characterized in that, The first support portion is detachably connected to the first rod body; And / or, the second support portion is detachably connected to the second rod body.

9. A roller support structure according to claim 6, characterized in that, The first rod body has a limiting groove that extends through one side along its axial direction, and the second rod body is slidably disposed in the limiting groove; The first rod body is provided with a guide groove, which extends along the axial direction of the first rod body; the end of the connecting rod passes through the guide groove and is rotatably connected to the second rod body.

10. A printer, characterized in that, It includes two roller shafts and several roller support structures as described in any one of claims 1-9, wherein the several roller support structures are disposed between the two roller shafts and respectively abut against the two roller shafts.

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