A paper roll mechanism of a printing machine

Abstract

A kind of paper winding mechanism of printing machine, the paper winding equipment technical field, including cabinet, further including compression assembly, compression assembly includes: second support frame, second compression roller, first support frame and first compression roller, second support frame is fixed and vertically installed on cabinet;Second compression roller is rotationally arranged in the cavity of second support frame;First support frame is provided with two groups, and two groups of first support frame are symmetrically arranged with the vertical axis of second support frame as axis left and right.This utility model constructs triangle clamping force field by setting two first compression rollers symmetrically in the left and right oblique upper side of second compression roller, forms orthogonal direction constraint resultant force, effectively offsets the lateral deviation force and tangential tension fluctuation when paper winding, significantly improves paper winding limit stability;Two groups of first compression roller with adjustable spacing can dynamically adjust position according to paper thickness, construct adaptive triangle clamping force field, ensure the effectiveness and flexibility of constraint mechanism, meet the precise control needs of diversification working condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper winding equipment, specifically relating to a paper winding mechanism for a printing press. Background Technology

[0002] The paper winding mechanism of a printing press is a key component. It mainly uses drive rollers to move the paper at a constant speed and uses a tension control system to keep the paper taut to avoid wrinkles or tears.

[0003] In related technology (Chinese Patent No. CN213325891U), a paper winding mechanism for a printing press is disclosed, including a printing press body, a paper feeding roller, a shaft plate, and a pressure roller. Two mounting rods are symmetrically arranged on the front and rear sides of the top left side wall and the front and rear sides of the top right side wall of the printing press body. The paper feeding roller is positioned between the two mounting rods on the right side, and the shaft plate is positioned between the two mounting rods on the left side. A paper winding roller is positioned between the two shaft plates. Two sliding rods are symmetrically arranged on the front and rear sides of the top left side wall of the printing press body. By providing movable sliding rods on the top left side wall of the printing press body, and mounting pressure rollers on the sliding rods, when the paper is wound using the paper winding roller, the pressure rollers can be tightly pressed against the side wall of the paper winding roller by moving the sliding rods, thus pressing the paper and preventing it from falling off the paper winding roller due to breakage. This also improves the flatness of the paper, increasing work efficiency and practicality.

[0004] In the existing paper winding mechanism of the printing press, the technical solution of using only a single pressure roller to tightly adhere to the side wall of the paper winding roller to achieve paper clamping is difficult to form a stable clamping force field due to the lack of a multi-dimensional constraint mechanism, resulting in insufficient positioning accuracy of the paper during the winding process. Utility Model Content

[0005] To address the problem that existing technologies rely solely on a single clamping roller tightly pressed against the sidewall of the roll roll for paper clamping, the lack of a multi-dimensional constraint mechanism makes it difficult to form a stable clamping force field, resulting in insufficient positioning accuracy of the paper during winding. This invention provides a paper winding mechanism for a printing press, in which two first pressure rollers are symmetrically arranged diagonally above and to the left of the second pressure roller. A triangular clamping force field is constructed using a three-point positioning principle. This structure creates a resultant constraint force in an orthogonal direction between the second pressure roller and the two first pressure rollers, effectively counteracting the lateral offset force and tangential tension fluctuations during paper winding. The multi-dimensional contact constraint mechanism significantly improves the limiting stability of the paper during winding, solving the slippage risk caused by the single clamping roller in traditional methods. The specific technical solution is as follows:

[0006] A paper winding mechanism for a printing press includes a machine housing and a pressing assembly. The pressing assembly includes a second support frame, a second pressure roller, a first support frame, and a first pressure roller. The second support frame is fixedly and vertically mounted on the machine housing. The second pressure roller is rotatably disposed within the inner cavity of the second support frame. Two sets of the first support frames are provided, symmetrically arranged about the vertical axis of the second support frame, and both sets of the first support frames are inclined. The first pressure roller is rotatably disposed within the inner cavity of the first support frame.

[0007] The two first pressure rollers are arranged symmetrically to each other with respect to the second pressure roller.

[0008] In the above technical solution, the tilt angle of the first support frame is set in the range of 30°-60°.

[0009] In the above technical solution, the positions of the two first pressure rollers are adjusted by an adjustment assembly. The adjustment assembly is provided in two sets, and each set of the adjustment assembly includes: a mounting frame, a cylinder and a drive frame. The mounting frame is fixed and vertically installed on the upper surface of the chassis; the cylinder is fixed and vertically installed on the side wall of the mounting frame; the drive frame is fixedly installed on the output end of the cylinder, and the drive frame has a through cavity.

[0010] In the above technical solution, each set of adjustment components further includes: a guide groove, a guide rod, and a movable pin. There are two guide grooves, which are symmetrically arranged about the vertical axis of the second support frame, and the guide grooves are inclinedly opened on the mounting frame. The guide rod is installed in the inner cavity of the guide groove, and the guide rod is arranged parallel to the inner side wall of the guide groove. The movable pin is slidably sleeved on the guide rod, and the movable pin is slidably embedded in the inner cavity of the drive frame.

[0011] In the above technical solution, the end of the movable pin is fixedly connected to the side wall of the first support frame.

[0012] In the above technical solution, the two sets of adjustment components are symmetrically arranged front and back with the horizontal axis of the chassis as the axis.

[0013] The above technical solution also includes a guide assembly, which includes: a support arm, a third support frame, and a third pressure roller. Two support arms are provided, and the two support arms are symmetrically installed on the upper surface of the chassis about the horizontal axis of the chassis. Two third support frames are provided, and the two third support frames are respectively installed vertically between the two support arms. Two third pressure rollers are provided, and the two third pressure rollers are respectively rotatably installed at the corresponding third support frame.

[0014] The above technical solution also includes: a mounting base, a drive motor, and paper. The mounting base is fixedly mounted on the chassis; the drive motor is mounted on the front side wall of the mounting base; the paper is wound up by a take-up roller, and the take-up roller is connected to the output end of the drive motor.

[0015] In the above technical solution, one end of the paper is wound around the take-up roller connected to the output end of the drive motor, and the other end of the paper passes sequentially between the two first pressure rollers and the second pressure roller, and between the two third pressure rollers.

[0016] The paper winding mechanism of this printing press, compared with the prior art, has the following advantages:

[0017] I. In view of the existing solution that uses only a single pressure roller to tightly press the paper against the side wall of the roll roll to achieve paper clamping, the lack of a multi-dimensional constraint mechanism makes it difficult to form a stable clamping force field, resulting in insufficient positioning accuracy of the paper during the winding process. This utility model sets two first pressure rollers symmetrically above and to the left and right of the second pressure roller. A triangular clamping force field is constructed through the three-point positioning principle. This structure forms a resultant constraint force in the orthogonal direction between the second pressure roller and the two first pressure rollers, which effectively counteracts the lateral offset force and tangential tension fluctuation during paper winding. The multi-dimensional contact constraint mechanism significantly improves the limiting stability of the paper during the winding process and solves the slippage risk caused by the single pressure roller in the traditional method.

[0018] Second, this utility model sets two sets of first pressure rollers with adjustable spacing, so that their position relative to the second pressure roller can be dynamically adjusted according to the thickness of the paper being wound. This adjustment mechanism can construct a suitable triangular clamping force field for paper of different thicknesses, ensuring the effectiveness and flexibility of the multi-dimensional constraint mechanism and meeting the precise control requirements of diverse winding and positioning conditions.

[0019] 3. The distance adjustment between the two sets of first pressure rollers and the second pressure roller of this utility model is achieved by a linkage mechanism consisting of a drive frame, guide groove, guide rod, and moving pin. A single driving force source driving mode is adopted, which synchronously transmits a single driving force to the two sets of first pressure rollers, so that they are adjusted at equal distances relative to the second pressure roller along a symmetrical trajectory. This ensures that the geometric center of the clamping force field always coincides with the axis of the second pressure roller during the adjustment process, realizing the synchronous response and precise positioning of the multi-dimensional constraint mechanism, and ensuring the symmetry of the two sets of first pressure rollers relative to the second pressure roller after adjustment.

[0020] In summary, this invention constructs a triangular clamping force field by symmetrically arranging two first pressure rollers diagonally above and to the left of the second pressure roller, forming a resultant constraint force in the orthogonal direction. This effectively counteracts the lateral offset force and tangential tension fluctuations during paper winding, significantly improving the stability of paper winding and limiting. The two sets of first pressure rollers with adjustable spacing can dynamically adjust their positions according to the paper thickness, constructing a suitable triangular clamping force field to ensure the effectiveness and flexibility of the constraint mechanism and meet the precise control requirements of diverse working conditions. The two sets of first pressure rollers achieve synchronous and equidistant adjustment of a single driving force source through a linkage mechanism of drive frame, guide groove, guide rod, and moving pin, ensuring that the geometric center of the clamping force field coincides with the axis of the second pressure roller and that the symmetry is maintained after adjustment, thus achieving synchronous response and precise positioning. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the mounting base of this utility model;

[0022] Figure 2 This is a front view of the second pressure roller of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the first pressure roller of this utility model;

[0024] Figure 4 This is a schematic diagram of the guide rod of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the third pressure roller of this utility model;

[0026] Figures 1 to 5 In the middle, 1. chassis, 2. mounting base, 3. drive motor, 4. paper, 5. mounting bracket, 6. cylinder, 7. drive frame, 8. guide groove, 9. guide rod, 10. moving pin, 11. first support frame, 12. first pressure roller, 13. second support frame, 14. second pressure roller, 15. support arm, 16. third support frame, 17. third pressure roller. Detailed Implementation

[0027] The following are specific implementation cases and appendices. Figures 1 to 5 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] A paper winding mechanism for a printing press includes a machine housing 1 and a pressing assembly. The pressing assembly includes a second support frame 13, a second pressure roller 14, a first support frame 11, and a first pressure roller 12. The second support frame 13 is fixedly and vertically mounted on the machine housing 1. The second pressure roller 14 is rotatably disposed within the inner cavity of the second support frame 13. Two sets of first support frames 11 are provided, symmetrically arranged about the vertical axis of the second support frame 13, and both sets of first support frames 11 are inclined. The first pressure roller 12 is rotatably disposed within the first support frame 13. The first support frame 11 has an inner cavity; the tilt angle of the first support frame 11 is set in the range of 30°-60°. Within this range, the first support frame 11 can cause the first pressure roller 12 and the second pressure roller 14 to be tilted at a certain angle, while forming a triangular positioning constraint force between the two first pressure rollers 12 and the second pressure roller 14; wherein, the two first pressure rollers 12 are arranged symmetrically with respect to the second pressure roller 14, thereby ensuring that the paper 4 can be constrained symmetrically between the two first pressure rollers 12 and the second pressure roller 14.

[0029] This invention symmetrically arranges two first pressure rollers 12 on the left and right sides above the second pressure roller 14. A triangular clamping force field is constructed through the three-point positioning principle. This structure forms a resultant constraint force in the orthogonal direction between the second pressure roller 14 and the two first pressure rollers 12, which effectively counteracts the lateral offset force and tangential tension fluctuation during paper winding. The multi-dimensional contact constraint mechanism significantly improves the limiting stability of the paper 4 during winding and solves the slippage risk caused by the single pressure roller in traditional paper winding.

[0030] The positions of the two first pressure rollers 12 are adjusted by an adjusting assembly. Two sets of adjusting assemblies are symmetrically arranged about the horizontal axis of the housing 1, ensuring that the two sets of adjusting assemblies can apply symmetrical forces to the two first pressure rollers 12. Each adjusting assembly includes: a mounting frame 5, a cylinder 6, and a drive frame 7. The mounting frame 5 is fixedly and vertically mounted on the upper surface of the housing 1; the cylinder 6 is fixedly and vertically mounted on the side wall of the mounting frame 5; the drive frame 7 is fixedly mounted on the output end of the cylinder 6, and the drive frame 7 has a through cavity; when the cylinder 6 moves downwards, it can drive the drive frame. 7 moves downward synchronously, and the displacement of the drive frame 7 realizes the synchronous displacement of other components. Each set of adjustment components also includes: guide groove 8, guide rod 9 and moving pin 10. There are two guide grooves 8, which are symmetrically arranged about the vertical axis of the second support frame 13, and the guide grooves 8 are inclined on the mounting frame 5. The guide rod 9 is installed in the inner cavity of the guide groove 8, and the guide rod 9 is parallel to the inner side wall of the guide groove 8. The moving pin 10 is slidably sleeved on the guide rod 9, and the moving pin 10 is slidably embedded in the inner cavity of the drive frame 7. The end of the moving pin 10 is fixedly connected to the side wall of the first support frame 11.

[0031] When the cylinder 6 is activated to drive the drive frame 7 downward, the moving pin 10 is slidably sleeved on the guide rod 9 and embedded in the drive frame 7. The downward drive frame 7 will drive the moving pins 10 on the left and right sides to move obliquely downward along the guide rod 9, so that the two first pressure rollers 12 press the paper 4 on the obliquely upper surface of the second pressure roller 14, thereby achieving the pressing and positioning of the paper 4. Similarly, this structure can be adapted to the positioning requirements of paper 4 of different thicknesses on the second pressure roller 14 by adjusting the downward distance of the drive frame 7.

[0032] In this invention, a single driving force source driving mode is adopted, which synchronously transmits a single driving force to two sets of first pressure rollers 12, so that they are adjusted at equal intervals relative to the second pressure roller 14 along a symmetrical trajectory. This ensures that the geometric center of the clamping force field always coincides with the axis of the second pressure roller 14 during the adjustment process, thereby realizing the synchronous response and precise positioning of the multi-dimensional constraint mechanism and ensuring the symmetry of the two sets of first pressure rollers 12 relative to the second pressure roller 14 after adjustment.

[0033] This invention sets two sets of first pressure rollers 12 with adjustable spacing, so that their position relative to the second pressure roller 14 can be dynamically adjusted according to the thickness of the paper 4 being wound. This adjustment mechanism can construct a suitable triangular clamping force field for paper 4 of different thicknesses, ensuring the effectiveness and flexibility of the multi-dimensional constraint mechanism and meeting the precise control requirements of diverse winding and positioning conditions.

[0034] This solution also includes a guide assembly, which includes: a support arm 15, a third support frame 16, and a third pressure roller 17. There are two support arms 15, which are symmetrically installed on the upper surface of the machine housing 1 with the horizontal axis of the machine housing 1 as the axis. There are two third support frames 16, which are respectively installed vertically between the two support arms 15. There are two third pressure rollers 17, which are respectively rotatably installed at the corresponding third support frame 16. Before winding the paper 4, the free end of the paper 4 is passed through the space above the second pressure roller 14 and between the two third pressure rollers 17 in sequence, which can achieve further pressing of the free end of the paper 4 under the guidance of the two third pressure rollers 17.

[0035] This solution also includes: mounting base 2, drive motor 3 and paper 4. Mounting base 2 is fixedly mounted on the chassis 1; drive motor 3 is mounted on the front side wall of mounting base 2; paper 4 is wound up by a winding roller, and the winding roller is connected to the output end of drive motor 3. Subsequently, the drive motor 3 is turned on to drive mounting base 2 to rotate counterclockwise, so that paper 4 is gradually wound up on mounting base 2.

[0036] One end of the paper 4 is wound around a take-up roller connected to the output end of the drive motor 3, and the other end of the paper 4 passes between the two first pressure rollers 12 and the second pressure roller 14, and between the two third pressure rollers 17 in sequence. Under the triangular limiting action of the two first pressure rollers 12 and the second pressure roller 14, and the joint limiting action of the two third pressure rollers 17, the paper 4 is positioned in a dual manner.

[0037] It is worth noting that in this application, the winding of paper 4 under the action of drive motor 3 is prior art. For example, the same winding device as that in Chinese patent CN213325891U can be used, which can meet the production requirements of winding and unwinding paper 4. The prior art will not be described or limited here. The cylinder 6 used is a commonly used self-locking cylinder, whose output end can stop at any position and lock. The two cylinders 6 are connected to a commonly used synchronizer to achieve synchronous start and stop. This is prior art. The model of the above-mentioned existing components will not be limited or described in detail here. The drive motor 3 is a commonly used self-locking motor with a lockable output end. When it stops, the output end can lock and will not rotate under external force. The drive motor 3 is a commonly used forward and reverse motor. Its output end can rotate in the forward or reverse direction according to the usage requirements. It can meet the above-mentioned usage requirements. The model of the above-mentioned existing components will not be limited or described in detail here.

[0038] The working principle of the paper winding mechanism of a printing press in this embodiment is as follows:

[0039] Before winding the paper 4, the free end of the paper 4 is passed through the space above the second pressure roller 14 and between the two third pressure rollers 17 in sequence, and the two first pressure rollers 12 are positioned on the upper surface of the paper 4. The drive frame 7 is driven to move downward by the activated cylinder 6. Since the moving pin 10 is slidably sleeved on the guide rod 9 and the moving pin 10 is slidably embedded in the drive frame 7, the downward drive frame 7 drives the two sets of moving pins 10 on the left and right sides to move obliquely downward along the guide rod 9 at the corresponding positions until the two first pressure rollers 12 press the paper 4 on the oblique upper surface of the second pressure roller 14. This achieves the pressing and positioning of the paper 4 on the second pressure roller 14 by the two first pressure rollers 12. Similarly, this can achieve the positioning of paper 4 of different thicknesses on the second pressure roller 14 by the two first pressure rollers 12.

[0040] Subsequently, the drive motor 3 is turned on to drive the mounting base 2 to rotate counterclockwise, so that the paper 4 is gradually rolled up on the mounting base 2;

[0041] This invention constructs a triangular clamping force field by symmetrically arranging two first pressure rollers 12 diagonally above and to the left of the second pressure roller 14. This forms a resultant force of orthogonal constraint, effectively offsetting the lateral offset force and tangential tension fluctuation during paper winding, and significantly improving the winding and limiting stability of the paper 4. The two sets of first pressure rollers 12 with adjustable spacing can dynamically adjust their positions according to the thickness of the paper 4 to construct a suitable triangular clamping force field, ensuring the effectiveness and flexibility of the constraint mechanism and meeting the precise control requirements of diverse working conditions. The two sets of first pressure rollers 12 achieve synchronous and equidistant adjustment of a single driving force source through a linkage mechanism of drive frame 7, guide groove 8, guide rod 9, and moving pin 10, ensuring that the geometric center of the clamping force field coincides with the axis of the second pressure roller 14 and that the symmetry is maintained after adjustment, thus achieving synchronous response and precise positioning.

[0042] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0043] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0044] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0045] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0046] Unless otherwise stated, the term "multiple" means two or more.

[0047] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0048] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A paper winding mechanism for a printing press, comprising a machine housing (1), characterized in that: It also includes a clamping assembly, the clamping assembly comprising: The second support frame (13) is fixed and vertically installed on the chassis (1); The second pressure roller (14) is rotatably disposed in the inner cavity of the second support frame (13); The first support frame (11) is provided in two sets. The two sets of the first support frame (11) are symmetrically arranged about the vertical axis of the second support frame (13) and both sets of the first support frame (11) are inclined. The first pressure roller (12) is rotatably disposed in the inner cavity of the first support frame (11); The two first pressure rollers (12) are arranged symmetrically on the left and right sides relative to the second pressure roller (14).

2. The paper winding mechanism of a printing press according to claim 1, characterized in that: The tilt angle range of the first support frame (11) is 30°-60°.

3. The paper winding mechanism of a printing press according to claim 1, characterized in that: The two first pressure rollers (12) are positioned by adjusting components, which are provided in two sets, and each set of adjusting components includes: Mounting bracket (5), which is fixed and vertically mounted on the upper surface of the chassis (1); Cylinder (6), which is fixed and vertically mounted on the side wall of the mounting bracket (5); The drive frame (7) is fixedly installed at the output end of the cylinder (6), and the drive frame (7) has a through cavity.

4. The paper winding mechanism of a printing press according to claim 3, characterized in that: Each set of adjustment components also includes: Guide groove (8), there are two guide grooves (8), the two guide grooves (8) are symmetrically arranged on the left and right with the vertical axis of the second support frame (13) as the axis, and the guide grooves (8) are inclined on the mounting frame (5); Guide rod (9), the guide rod (9) is installed in the inner cavity of the guide groove (8), and the guide rod (9) is arranged parallel to the inner side wall of the guide groove (8); The movable pin (10) is slidably sleeved on the guide rod (9) and slidably embedded in the inner cavity of the drive frame (7).

5. The paper winding mechanism of a printing press according to claim 4, characterized in that: The end of the movable pin (10) is fixedly connected to the side wall of the first support frame (11).

6. The paper winding mechanism of a printing press according to claim 3, characterized in that: The two sets of adjustment components are symmetrically arranged about the horizontal axis of the chassis (1).

7. The paper winding mechanism of a printing press according to claim 4, characterized in that: It also includes a guide component, the guide component comprising: Support arm (15), two support arms (15) are provided, and the two support arms (15) are symmetrically installed on the upper surface of the chassis (1) with the horizontal axis of the chassis (1) as the axis; The third support frame (16) is provided in two, and the two third support frames (16) are respectively installed between the two support arms (15) in a corresponding manner. There are two third pressure rollers (17), and the two third pressure rollers (17) are respectively rotatably arranged at the corresponding third support frame (16).

8. The paper winding mechanism of a printing press according to claim 7, characterized in that: Also includes: Mounting base (2), which is fixedly mounted on the chassis (1); A drive motor (3) is mounted on the front side wall of the mounting base (2); Paper (4), the paper (4) is wound up by a winding roller, and the winding roller is connected to the output end of the drive motor (3).

9. The paper winding mechanism of a printing press according to claim 8, characterized in that: One end of the paper (4) is wound around the take-up roller connected to the output end of the drive motor (3), and the other end of the paper (4) passes between the two first pressure rollers (12) and the second pressure roller (14) and between the two third pressure rollers (17) in sequence.

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