Printing paper conveying mechanism

Abstract

The utility model relates to a printing paper conveying mechanism which comprises a driving roller, an outer shell is arranged on the lower portion of the driving roller, a plurality of up-down axial receding holes are formed in the outer shell from front to back in parallel in a penetrating mode, a plurality of front-back axial supporting wheels are arranged in the outer shell from front to back in parallel, and the supporting wheels correspond to the receding holes one to one. A through hole is formed in the supporting wheel in a front-back penetrating mode, a supporting ball is inserted into the through hole, and a positioning shaft in the front-back axial direction is rotationally connected to the interior of the outer shell, so that the supporting wheel can deviate relative to the outer shell by restraining coaxial fixed connection of the positioning shaft and the supporting ball; and the deviated supporting wheels can still rotate around the central axes of the supporting wheels relative to the outer shell, and in this way, the multiple supporting wheels can be synchronously and actively deviated in practice, so that deviation correction work on the paper to be machined is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of paper processing equipment, in particular to a printing paper conveying mechanism. Background Art

[0002] A conveying device is used in the production of printing paper. The conveying device comprises frames on two sides and a plurality of conveying rollers are installed on the frames.

[0003] The correct route of the printing paper is a necessary condition to ensure the correct printing of the printed pattern. However, in the actual production process, factors such as static electricity, operating steps, and initial position can easily cause deviation during the transportation of the paper to be processed.

[0004] Moreover, the prior art devices generally have a relatively simple structure. When the paper deviates, they do not have corresponding correction measures. Generally, the machine is stopped or manually corrected according to the amount of deviation. In practice, stopping will lead to a long processing waste and easily generate a lot of waste, while the manual correction method has high requirements for operators. If you are not careful, it will cause paper damage, and even seriously affect the safety of operators.

[0005] Therefore, we believe that there is a need for a printing paper conveying mechanism that can have certain correction measures to assist in correcting the paper to be processed when it deviates. Summary of the invention

[0006] In view of the deficiencies in the prior art, the utility model proposes a printing paper conveying mechanism, which has the advantages of helping to correct the deviation of paper and avoiding large production losses. It solves the shortcomings of the prior art devices that lack corresponding correction measures and are prone to large losses after the processed paper is offset.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A printing paper conveying mechanism comprises a front-to-back axial driving roller, a support member is abutted against the lower end of the driving roller, the support member comprises an outer shell, a plurality of front-to-back axial supporting wheels are arranged in parallel from front to back inside the outer shell, through holes are opened through the supporting wheels in front and back, supporting balls are inserted in the through holes, and a limiting ring is coaxially fixedly connected to the front and back sides of each through hole, the inner diameter of the limiting ring is smaller than the diameter of the supporting ball, a front-to-back axial positioning shaft is rotatably connected inside the outer shell, the positioning shaft is coaxially fixedly connected to the supporting ball, and the inner diameter of the limiting ring is larger than the diameter of the positioning shaft, a plurality of upper and lower axial avoidance holes are opened in parallel from front to back on the outer shell, the plurality of avoidance holes correspond to the plurality of supporting wheels one by one, and the upper and lower ends of each supporting wheel protrude from the outer shell through the avoidance hole.

[0009] Preferably, a hook ring is fixedly connected to the left and right sides of the front and rear end surfaces of each support wheel, and a pull rod I is provided between adjacent support wheels, and the front and rear ends of each pull rod I are rotatably connected to the adjacent hook ring.

[0010] Preferably, a hook spring is respectively arranged on the left and right sides of the outer shell, the two hook springs are respectively located on the front and rear sides of the outer shell, and the two hook springs are respectively rotatably connected to the end faces of adjacent support wheels close to the inner wall of the outer shell.

[0011] Preferably, when the two hook springs are not affected by external forces, the central axis of the support wheel coincides with the central axis of the positioning shaft.

[0012] Preferably, a pull rod II is respectively provided on the left and right sides inside the outer shell, and the two pull rods II are respectively located on the front and rear sides of the outer shell, and the two hook springs and the two pull rods II are arranged in a rectangular array inside the outer shell, and each of the pull rods II is rotatably connected to the end face of an adjacent support wheel close to the inner wall of the outer shell.

[0013] Preferably, the front and rear ends of the outer shell are rotatably connected to a rope wheel respectively, a pull rope is wound and fixedly connected to the outer side of the rope wheel, and the pull rope is fixedly connected to the adjacent pull rod I.

[0014] Preferably, the front and rear ends of the outer shell are respectively rotatably connected to a support shaft, the part of the support shaft located outside the outer shell is fixedly connected to a handle, the part of the support shaft located inside the outer shell is coaxially fixedly connected to a driven gear, and each of the rope wheels is coaxially fixedly connected to a follower gear on the outside, and the follower gear is meshingly connected to the adjacent driven gear.

[0015] Preferably, the transmission ratio between the driven gear and the follower gear is not equal to one, and the diameter of the driven gear is smaller than the diameter of the follower gear.

[0016] Preferably, a limiting ring is fixedly connected to the inner walls on both sides of the outer shell, and the middle section of each pull rope is inserted into the inner side of the adjacent limiting ring, and the pull rope passes through the limiting ring without contacting the follower gear.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model cooperates with the supporting sphere through the positioning shaft and the limit ring, so that the supporting wheel can rotate around the central axis of the avoidance hole as needed during actual use. At the same time, this does not affect the supporting wheel's ability to rotate around the central axis of the supporting wheel relative to the outer shell. This can actually synchronously and actively offset multiple supporting wheels to achieve the correction work of the paper to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the position relationship between the outer shell and the avoidance hole of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection between the support wheel and the support ball of the utility model;

[0022] Figure 4 This is a schematic diagram of the cooperation between the support wheel and the pull rod I of the utility model;

[0023] Figure 5 This is a schematic diagram of the connection between the pull rope and the pull rod II of the utility model.

[0024] In the figure: 1. driving roller; 2. outer shell; 3. avoidance hole; 4. handle; 5. support wheel; 6. positioning shaft; 7. limit ring; 8. support ball; 9. pull rod I; 10. hook ring; 11. pull rod II; 12. pull rope; 13. follower gear; 14. driven gear; 15. support shaft; 16. rope pulley; 17. hook spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Please refer to Figure 1-5 A printing paper conveying mechanism includes a front-rear axial driving roller 1, and a support member is abutted at the lower end of the driving roller 1. In practice, the axial end of the driving roller 1 should be externally connected to a corresponding driving device. Through the rotation of the driving roller 1 and the abutment characteristics of the driving roller 1 and the support member, the paper to be processed placed between the support member and the driving roller 1 can be conveyed forward due to friction resistance.

[0028] It should be noted that, in order to facilitate understanding, the corresponding driving device connected to the driving roller 1 is omitted in the present application, so that the supporting member of the main body of the device can be displayed protrudingly.

[0029] Specifically, the support member includes an outer shell 2. As shown in the figure, the projection of the outer shell 2 on the vertical plane is an elliptical structure. This structure can minimize the wear on the paper to be processed and avoid damage to the paper to be processed.

[0030] At the same time, a plurality of support wheels 5 are arranged in parallel from front to back inside the outer shell 2, and a plurality of upper and lower axial avoidance holes 3 are arranged in parallel from front to back on the outer shell 2, and the plurality of avoidance holes 3 correspond to the plurality of support wheels 5 one by one, so that by constraining the diameter of the support wheel 5, the upper and lower ends of each support wheel 5 can protrude from the outer shell 2 through the avoidance holes 3, that is, in practice, the paper to be processed is squeezed by the support wheel 5 and the driving roller 1 at the same time. At this time, combined with the rotational connection between the support wheel 5 and the outer shell 2, the friction loss between the paper to be processed and the device can be further reduced.

[0031] Specifically, the device has a front-to-rear axial positioning shaft 6 rotatably connected inside the outer shell 2, and through holes are opened on the support wheel 5 in the front and rear. The positioning shaft 6 is inserted into the support wheel 5 to provide a position limit for the support wheel 5.

[0032] In addition, a supporting ball 8 is inserted into each through hole. As shown in the figure, the diameter of the supporting ball 8 is equal to the diameter of the through hole. By constraining the supporting ball 8 to be fixedly connected with the positioning shaft 6, the position constraint of the supporting wheel 5 can be fully realized.

[0033] At the same time, the structural characteristics of the supporting sphere 8 itself also enable the supporting wheel 5 to rotate relative to the outer shell 2, that is, the supporting wheel 5 can rotate to a degree where the central axis does not coincide with the central axis of the positioning shaft 6. At this time, during the process of the paper to be processed abutting against the supporting wheel 5, the rotation of the supporting wheel 5 can have a correction effect on the paper to be processed.

[0034] Furthermore, in the device, a limit ring 7 is coaxially fixedly connected on the front and rear sides of each through hole, and the supporting ball 8 is located between the two limit rings 7. At this time, the inner diameter length of the constraint limit ring 7 is smaller than the diameter of the supporting ball 8, which can ensure that during the rotation of the supporting wheel 5 relative to the supporting ball 8, the vertical center line of the supporting wheel 5 and the vertical center axis of the supporting ball 8 are always in a coincidence state. This can ensure that the supporting ball 8 will not separate from the supporting wheel 5, thereby ensuring the stability of the device during operation.

[0035] Specifically, in order to control the multiple support wheels 5 to follow the need to rotate synchronously relative to the outer shell 2, the device has a hook ring 10 fixedly connected to the left and right sides of the front and rear end faces of each support wheel 5, and a pull rod Ⅰ9 is arranged between adjacent support wheels 5 to constrain the front and rear ends of each pull rod Ⅰ9 to be rotatably connected to the adjacent hook ring 10. On the premise that the positions of the multiple support wheels 5 remain stationary relative to the outer shell 2, the pull rod Ⅰ9 can be pulled to synchronously drive the multiple support wheels 5 to rotate by the same angle.

[0036] Furthermore, in order to achieve resetting and ensure that the central axis of the support wheel 5 coincides with the central axis of the outer shell 2 under normal circumstances, the device is provided with a hook spring 17 on the left and right sides of the inner shell 2, and the two hook springs 17 are respectively located on the front and rear sides of the outer shell 2, and the two hook springs 17 are respectively connected to the end faces of the adjacent support wheels 5 close to the inner wall of the outer shell 2. This utilizes the two hook springs 17 to apply pulling forces in completely opposite directions to the support wheel 5, which can achieve automatic resetting of the support wheel 5 after the external force constraint on the pull rod Ⅰ9 is cancelled.

[0037] Therefore, the device synchronously constrains that when the two hook springs 17 are not affected by external forces, the central axis of the support wheel 5 coincides with the central axis of the positioning shaft 6 so that the device can operate as expected.

[0038] Furthermore, in order to facilitate the rotation of the support wheel 5, that is, to change the angle of the support wheel 5 outside the outer shell 2, the device is provided with a pull rod Ⅱ11 on the left and right sides of the outer shell 2, and the two pull rods Ⅱ11 are respectively located on the front and rear sides of the outer shell 2, and the two hook springs 17 and the two pull rods Ⅱ11 are arranged in a rectangular array inside the outer shell 2;

[0039] At this time, by constraining each tie rod II11 to be rotationally connected to the end face of the adjacent support wheel 5 close to the inner wall of the outer shell 2, the rotation angles of multiple support wheels 5 can be synchronously changed while affecting the tie rod II11.

[0040] Specifically, in the device, a pull rope 12 is fixedly connected to the side of the pull rod II 11 away from the support wheel 5 , and the pull rope 12 drives the pull rod II 11 to move forward and backward.

[0041] Furthermore, in practice, since the rotation angle of the support wheel 5 is small, that is, the movement stroke of the pull rod II 11 is short, in order to improve the degree of refinement of the operation, the device is rotatably connected to a rope wheel 16 at the front and rear ends of the outer shell 2, and the pull rope 12 is wound and fixed on the outside of the rope wheel 16.

[0042] Furthermore, in order to further improve the degree of refinement, the device is coaxially fixedly connected to a follower gear 13 on the outside of the rope pulley 16, and a driving gear is meshingly connected to one side of the follower gear 13. Therefore, by constraining the transmission ratio between the driven gear 14 and the follower gear 13 to be not equal to one, and the diameter of the driven gear 14 is smaller than the diameter of the follower gear 13, the ratio between the amplitude of the user's rotation of the driven gear 14 and the movement stroke of the pull rod II 11 can be processed, thereby improving the degree of refined operation.

[0043] Specifically, the device is rotatably connected to a support shaft 15 at the front and rear ends of the outer shell 2, the part of the support shaft 15 located outside the outer shell 2 is fixedly connected to a handle 4, and the part of the support shaft 15 located inside the outer shell 2 is coaxially fixedly connected to a driven gear 14. The presence of the handle 4 makes it convenient for the user to adjust the rotation angle of the support wheel 5 from the outside.

[0044] It should be emphasized that the device changes the tilt direction of the support wheel 5 by cooperating with the driven gear 14 and the follower gear 13. The driven gear 14 and the follower gear 13 lack corresponding limit mechanisms on their outer sides. Therefore, when the user cancels the force applied to the grip 4, as the hook spring 17 releases its elastic potential energy, the support wheel 5 can automatically reset to a state where the central axis coincides with the central axis of the outer shell 2.

[0045] Furthermore, since the pull rope 12 is made of flexible material, in order to avoid the pull rope 12 from contacting the follower gear 13 and causing the pull rope 12 to wear at a high speed, the device has a limit ring 7 fixedly connected to the inner walls of the front and rear sides of the outer shell 2, respectively, to constrain the middle section of each pull rope 12 to be inserted into the inner side of the adjacent limit ring 7. This makes it possible for the pull rope 12 to pass through the limit ring 7 without contacting the follower gear 13, thereby avoiding wear.

[0046] One point that needs additional explanation is that, as shown in the figure, in this device, a damping ring sleeve made of rubber is provided on the outside of each support wheel 5, and a corresponding protrusion is provided on the damping ring sleeve. The damping ring sleeve can further increase the friction resistance between the paper to be processed and the support wheel 5, thereby ensuring that the support wheel 5 can play a corrective effect on the paper to be processed.

[0047] In actual use, the utility model:

[0048] First, under normal conditions, the hook spring 17 is not affected by external forces. Under the action of the two hook springs 17, the central axis of the support wheel 5 coincides with the central axis of the outer shell 2, and the paper to be processed passes normally between the driving roller 1 and the support wheel 5.

[0049] Then, as the processing continues, various reasons may cause the paper to be processed to deviate. At this time, according to the direction of paper deviation, the user can rotate the handle 4 to gradually apply a thrust in the opposite direction of the deviation to the paper to be processed, so as to reset the paper.

[0050] Finally, after the paper is reset, the user releases the grip 4 and the hook spring 17 releases its elastic potential energy, so that the support wheel 5 is reset to a state where the central axis coincides with the central axis of the outer shell 2 .

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printing paper conveying mechanism, characterized in that: It comprises a driving roller (1) in the front and rear axial direction, the lower end of the driving roller (1) is abutted against a support member, and the support member comprises an outer shell (2); A plurality of front and rear axial support wheels (5) are arranged in parallel inside the outer shell (2) from front to back, through holes are provided through the support wheels (5) at the front and rear, support balls (8) are inserted into the through holes, and a limiting ring (7) is coaxially fixedly connected to the front and rear sides of each through hole, and the inner diameter of the limiting ring (7) is smaller than the diameter of the support ball (8); The outer shell (2) is internally rotatably connected with a front-to-rear axial positioning shaft (6), the positioning shaft (6) is coaxially fixedly connected to the supporting sphere (8), and the inner diameter of the limiting ring (7) is greater than the diameter of the positioning shaft (6); The outer shell (2) is provided with a plurality of vertical axial avoidance holes (3) arranged in parallel from front to back, the plurality of avoidance holes (3) corresponding to the plurality of support wheels (5) one by one, and the upper and lower ends of each support wheel (5) protrude from the outer shell (2) through the avoidance holes (3).

2. A printing paper conveying mechanism according to claim 1, characterized in that: A hook ring (10) is fixedly connected to the left and right sides of the front and rear end surfaces of each support wheel (5), and a pull rod I (9) is arranged between adjacent support wheels (5), and the front and rear ends of each pull rod I (9) are rotatably connected to the adjacent hook ring (10).

3. A printing paper conveying mechanism according to claim 2, characterized in that: A hook spring (17) is provided on the left and right sides of the outer shell (2), respectively. The two hook springs (17) are located on the front and rear sides of the outer shell (2), respectively. Furthermore, the two hook springs (17) are rotatably connected to the end faces of the adjacent support wheels (5) close to the inner wall of the outer shell (2).

4. A printing paper conveying mechanism according to claim 3, characterized in that: When the two hook springs (17) are not affected by external forces, the central axis of the support wheel (5) coincides with the central axis of the positioning shaft (6).

5. A printing paper conveying mechanism according to claim 3, characterized in that: A pull rod II (11) is provided on the left and right sides of the outer shell (2), respectively. The two pull rods II (11) are located on the front and rear sides of the outer shell (2), respectively. In addition, the two hook springs (17) and the two pull rods II (11) are arranged in a rectangular array inside the outer shell (2); Each of the pull rods II (11) is rotatably connected to an end surface of an adjacent support wheel (5) close to the inner wall of the outer shell (2).

6. A printing paper conveying mechanism according to claim 5, characterized in that: The front and rear ends of the outer shell (2) are rotatably connected to a rope wheel (16), and a pull rope (12) is fixedly connected to the outer side of the rope wheel (16), and the pull rope (12) is fixedly connected to the adjacent pull rod I (9).

7. A printing paper conveying mechanism according to claim 6, characterized in that: The outer shell (2) is rotatably connected to a support shaft (15) at both the front and rear ends, the portion of the support shaft (15) located outside the outer shell (2) is fixedly connected to a handle (4), and the portion of the support shaft (15) located inside the outer shell (2) is coaxially fixedly connected to a driven gear (14); A follower gear (13) is coaxially fixedly connected to the outer side of each rope wheel (16), and the follower gear (13) is meshingly transmission-connected with an adjacent driven gear (14).

8. A printing paper conveying mechanism according to claim 7, characterized in that: The transmission ratio between the driven gear (14) and the follower gear (13) is not equal to one, and the diameter of the driven gear (14) is smaller than the diameter of the follower gear (13).

9. A printing paper conveying mechanism according to claim 7, characterized in that: A limiting ring (7) is fixedly connected to the inner walls of the front and rear sides of the outer shell (2), and the middle section of each pull rope (12) is inserted into the inner side of an adjacent limiting ring (7), so that the pull rope (12) does not contact the follower gear (13) through the limiting ring (7).

Images