Paper pressing structure for printing machine

Abstract

The utility model relates to the technical field of printing machines, in particular to a paper pressing structure for a printing machine. Comprising a printing machine body, a material guiding rack arranged on the discharging side of the printing machine body and obliquely arranged, a horizontal conveying frame arranged at the end, away from the printing machine body, of the material guiding rack, and a paper pressing roller located above the connecting position of the material guiding rack and the horizontal conveying frame. The end, close to the printing machine body, of the material guiding rack is higher than the end, away from the printing machine body, of the material guiding rack. The paper pressing roller is arranged above the obliquely-arranged material guiding rack, the paper pressing roller abuts against the top of the paper, in the process that the paper is conveyed to the horizontal conveying frame from the material guiding rack, the paper pressing roller limits the paper, the possibility that the paper protrudes upwards to be staggered due to the mutual extrusion effect is reduced, and the paper arrangement flatness is improved.

Description

Technical Field

[0001] The present application relates to the technical field of printing presses, and in particular to a paper pressing structure for a printing press. Background Art

[0002] After the printing press processes the paper, it needs to be fed, usually by a conveyor belt. The paper is stacked diagonally on the conveyor belt from the unloading port of the printing press and gradually sent to the next process by the conveyor belt.

[0003] The conveyor belt is tilted near the discharge port of the printing press. The purpose is to make the feeding end of the conveyor belt closer to the discharge port and reserve a certain space for the paper to move, so as to catch the paper more stably and accurately and improve the neatness of the left and right directions when arranging the paper. However, the paper will squeeze each other during the movement at the connection between the inclined section and the horizontal section of the conveyor belt. The paper is easily bulged upward and misplaced due to the mutual squeezing, resulting in uneven paper arrangement, which affects the subsequent processes, so further improvement is needed. Utility Model Content

[0004] In order to improve the flatness of paper arrangement, the present application provides a paper pressing structure for a printing press.

[0005] The present application provides a printing press paper pressing structure adopting the following technical solution:

[0006] A paper pressing structure for a printing press comprises a printing press body, a material guide frame arranged at an inclined side of the printing press body, a horizontal conveying frame arranged at an end of the material guide frame away from the printing press body, and a paper pressing roller located above the connection between the material guide frame and the horizontal conveying frame, wherein the end of the material guide frame close to the printing press body is higher than the end of the material guide frame away from the printing press body, and the paper pressing roller abuts against the upper part of the paper.

[0007] By adopting the above technical solution, a paper pressing roller is arranged above the inclined material guide frame, and the paper pressing roller abuts against the top of the paper. As the paper is transported from the material guide frame to the horizontal conveying frame, the paper pressing roller limits the paper, thereby reducing the possibility of the paper bulging upward and becoming misplaced due to mutual squeezing, thereby improving the flatness of the paper arrangement.

[0008] Preferably, it further comprises a paper pressing rack arranged on the printing machine body and located above the material guiding mechanism, and the paper pressing roller is rotatably connected to the paper pressing rack.

[0009] By adopting the above technical solution, a paper pressing frame is added to provide a mounting carrier for the paper pressing roller, and the paper pressing roller is rotatably connected to the paper pressing frame, so that the paper pressing roller can follow and roll on the paper during the paper conveying process.

[0010] Preferably, the paper pressing frame comprises a pair of support arms arranged on the outer wall of the printing machine body, a support cross bar arranged on the support arms, and a connecting piece arranged on the support cross bar, and the paper pressing roller is rotatably connected to the connecting piece.

[0011] Preferably, the connecting member is a connecting rope, one end of which is fixedly connected to the supporting cross bar, a rope threading hole is coaxially penetrated through the end surface of the paper pressing roller, and the other end of the connecting rope is passed through the rope threading hole and then fixed to the supporting cross bar.

[0012] By adopting the above technical solution, the flexible installation of the paper pressing roller is achieved through the connecting rope, and the relative rotation of the paper pressing roller and the connecting rope is achieved, so that the paper pressing roller always maintains a downward pressure on the paper, further ensuring that the paper remains flat during transportation.

[0013] Preferably, the connecting member is a connecting rod, one end of which is hinged to the supporting cross bar, and the paper pressing roller is rotatably connected to the other end of the connecting rod.

[0014] By adopting the above technical solution, the support arm provides an installation carrier for the support cross bar, the support cross bar provides an installation carrier for the connecting rod, and the connecting rod is rotatably connected to the support cross bar, so that the paper pressing roller drives the free end of the connecting rod to swing downward by its own gravity under normal conditions, so that the paper pressing roller always maintains a downward pressure on the paper, further ensuring that the paper remains flat during transportation.

[0015] Preferably, the support arm includes a support tube arranged on the printing machine body and a support rod slidably inserted in the support tube, the support cross bar is connected to the support rod, and the support tube is provided with a length adjustment member for adjusting the sliding position of the support rod.

[0016] By adopting the above technical solution, the sliding position of the support rod is adjusted by the length adjusting member, thereby adjusting the length of the support arm, and then adjusting the position of the support cross bar, so as to adjust the paper pressing roller to a suitable abutment position, thereby improving the paper pressing effect.

[0017] Preferably, the length adjusting member is a threaded sleeve coaxially rotatably connected to the end of the support tube, and the support rod is a screw rod, which is threadedly inserted into the threaded sleeve.

[0018] By adopting the above technical solution, by rotating the screw sleeve, the support rod slides along the axial direction of the support tube under the thread restriction of the screw sleeve, thereby adjusting the sliding position of the support rod, and the structure is simple and the adjustment is convenient.

[0019] Preferably, the end of the support arm is hinged to the outer wall of the printing machine body, and the printing machine body is provided with a swing angle adjustment member for adjusting the swing angle of the support arm.

[0020] By adopting the above technical solution, the swing angle of the support arm is adjusted through the swing angle adjustment member, thereby adjusting the relative position of the support cross bar and the material guide frame, thereby adjusting the paper pressing roller to a suitable abutment position, thereby improving the paper pressing effect.

[0021] Preferably, the swing angle adjusting member is a swing angle cylinder, a cylinder body of the swing angle cylinder is hinged to the outer wall of the printing machine body, and a piston rod of the swing angle cylinder is hinged to the support arm.

[0022] By adopting the above technical solution, the swing angle adjustment of the support arm is achieved by extending and retracting the piston rod of the swing angle cylinder. At the same time, the swing angle cylinder supports the support arm, thereby improving the structural stability of the support arm.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. By arranging a paper pressing roller above the inclined material guide frame, the paper pressing roller abuts against the top of the paper. As the paper is transported from the material guide frame to the horizontal conveying frame, the paper pressing roller limits the paper, reducing the possibility of paper bulging upward and misalignment due to mutual squeezing, thereby improving the flatness of paper arrangement;

[0025] 2. Add a paper pressing frame to provide a mounting carrier for the paper pressing roller. The paper pressing roller is rotatably connected to the paper pressing frame, so that the paper pressing roller can follow and roll on the paper during the paper conveying process;

[0026] 3. The sliding position of the support rod is adjusted by the length adjusting piece, thereby adjusting the length of the support arm, and then adjusting the position of the support cross bar, so as to adjust the paper pressing roller to a suitable abutment position to improve the paper pressing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a paper pressing structure for a printing machine in Example 1;

[0028] Figure 2 is a schematic diagram of the connection structure between the connecting member and the paper pressing roller in Example 1;

[0029] Figure 3 is a schematic structural diagram of the support arm in Example 2;

[0030] Figure 4 Schematic diagram of the connection structure between the connecting member and the paper pressing roller in Example 3.

[0031] In the figure, 1, printing machine body; 2, material guide frame; 3, horizontal conveyor frame; 4, paper pressing frame; 41, support arm; 411, support tube; 412, support rod; 42, support cross bar; 43, connecting piece; 44, mounting seat; 45, stepping motor; 5, paper pressing roller; 51, rope threading hole; 52, rotating shaft; 6, swing angle cylinder; 7, screw sleeve. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] Embodiment 1:

[0034] The present application embodiment discloses a paper pressing structure for a printing machine, referring to Figure 1 , comprising a printing machine body 1, a material guide frame 2 arranged on the discharging side of the printing machine body 1 and arranged in an inclined manner, a horizontal conveying frame 3 arranged at the end of the material guide frame 2 away from the printing machine body 1, a paper pressing frame 4 arranged on the printing machine body 1 and located above the material guiding mechanism, and a paper pressing roller 5 arranged on the paper pressing frame 4 and located above the connection between the material guide frame 2 and the horizontal conveying frame 3. The end of the material guide frame 2 close to the printing machine body 1 is higher than the end of the material guide frame 2 away from the printing machine body 1. The material guide frame 2 and the horizontal conveying frame 3 are both provided with conveyor belts for conveying paper, and the paper pressing roller 5 abuts against the upper part of the paper.

[0035] Reference Figure 1 , Figure 2 The paper press 4 includes a pair of support arms 41 arranged on the outer wall of the printing machine body 1, a support cross bar 42 arranged on the support arm 41, and a connecting member 43 arranged on the support cross bar 42. In the present embodiment, the support arm 41 is hinged to the outer wall of the printing machine body 1, and the printing machine body 1 is provided with a swing angle adjustment member for adjusting the swing angle of the support arm 41. Specifically, the swing angle adjustment member is a swing angle cylinder 6 located below the support arm 41, the cylinder body of the swing angle cylinder 6 is hinged to the outer wall of the printing machine body 1, and the piston rod of the swing angle cylinder 6 is hinged to the support arm 41.

[0036] The support arm 41 is fixedly connected with a mounting seat 44. In this embodiment, the support cross bar 42 is connected to the mounting seat 44 by rotating around its own axis. The connecting member 43 is a connecting rope. The end surface of the paper pressing roller 5 is coaxially penetrated with a rope threading hole 51. One end of the connecting rope is fixedly connected to the support cross bar 42. The other end of the connecting rope is passed through the rope threading hole 51 and then fixed to the support cross bar 42, so that the paper pressing roller 5 can rotate around its own axis. The mounting seat 44 is fixedly connected with a stepping motor 45 for driving the support cross bar 42 to rotate. The support cross bar 42 rotates to reel or unreel the connecting rope, thereby adjusting the length of the connecting rope, thereby adjusting the position of the paper pressing roller 5 relative to the material guide frame 2.

[0037] The implementation principle of a paper pressing structure for a printing machine in an embodiment of the present application is as follows: the flexible installation of the paper pressing roller 5 is achieved through a connecting rope, and the relative rotation of the paper pressing roller 5 and the connecting rope is achieved. The paper pressing roller 5 always maintains a downward pressure on the paper due to its own weight, and the paper pressing roller 5 abuts against the top of the paper. As the paper is transported from the material guide frame 2 to the horizontal conveying frame 3, the paper pressing roller 5 limits the position of the paper, thereby reducing the possibility of the paper bulging upward and becoming misplaced due to mutual squeezing, thereby improving the flatness of the paper arrangement.

[0038] Embodiment 2:

[0039] The difference from Example 1 is that, referring to Figure 3 The support arm 41 includes a support tube 411 hinged to the printing machine body 1 and a support rod 412 slidably inserted in the support tube 411. The piston rod of the swing cylinder 6 is hinged to the support tube 411, and the mounting seat 44 is fixed to the support rod 412. The support tube 411 is provided with a length adjustment member for adjusting the sliding position of the support rod 412. Specifically, the support rod 412 is a screw rod, and the length adjustment member is a screw sleeve 7 coaxially connected to the end of the support tube 411, and the support rod 412 is threadedly inserted into the screw sleeve 7. By rotating the screw sleeve 7, the support rod 412 is limited by the thread of the screw sleeve 7 and slides along the axial direction of the support tube 411, so as to adjust the sliding position of the support rod 412, thereby adjusting the length of the support arm 41, adjusting the paper pressing roller 5 to a suitable abutment position, and improving the paper pressing effect.

[0040] Embodiment 3:

[0041] The difference from Example 1 is that, referring to Figure 4 The support cross bar 42 is fixedly connected to the mounting seat 44, the connecting member 43 is a connecting rod, one end of the connecting rod is hinged to the support cross bar 42, and the paper pressing roller 5 is coaxially connected to the other end of the connecting rod through a rotating shaft 52.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A paper pressing structure for a printing press, characterized in that: The printing machine comprises a printing machine body (1), a material guide frame (2) arranged on the discharging side of the printing machine body (1) and arranged in an inclined manner, a horizontal conveying frame (3) arranged at the end of the material guide frame (2) away from the printing machine body (1), and a paper pressing roller (5) located above the connection between the material guide frame (2) and the horizontal conveying frame (3), wherein the end of the material guide frame (2) close to the printing machine body (1) is higher than the end of the material guide frame (2) away from the printing machine body (1), and the paper pressing roller (5) abuts against the upper part of the paper.

2. The paper pressing structure for a printing machine according to claim 1, characterized in that: It also comprises a paper pressing frame (4) which is arranged on the printing machine body (1) and located above the material guiding mechanism, and the paper pressing roller (5) is rotatably connected to the paper pressing frame (4).

3. The paper pressing structure for a printing machine according to claim 2, characterized in that: The paper pressing frame (4) comprises a pair of support arms (41) arranged on the outer wall of the printing machine body (1), a support cross bar (42) arranged on the support arms (41), and a connecting member (43) arranged on the support cross bar (42), and the paper pressing roller (5) is rotatably connected to the connecting member (43).

4. The paper pressing structure for a printing machine according to claim 3, characterized in that: The connecting member (43) is a connecting rope, one end of which is fixedly connected to the supporting cross bar (42), a rope threading hole (51) is coaxially penetrated through the end surface of the paper pressing roller (5), and the other end of the connecting rope is passed through the rope threading hole (51) and then fixed to the supporting cross bar (42).

5. The paper pressing structure for a printing machine according to claim 3, characterized in that: The connecting member (43) is a connecting rod, one end of which is hinged to the supporting cross bar (42), and the paper pressing roller (5) is rotatably connected to the other end of the connecting rod.

6. The paper pressing structure for a printing machine according to claim 3, characterized in that: The support arm (41) comprises a support tube (411) arranged on the printing machine body (1) and a support rod (412) slidably inserted in the support tube (411); the support cross rod (42) is connected to the support rod (412); and the support tube (411) is provided with a length adjustment member for adjusting the sliding position of the support rod (412).

7. The paper pressing structure for a printing machine according to claim 6, characterized in that: The length adjustment member is a threaded sleeve (7) coaxially rotatably connected to the end of the support tube (411); the support rod (412) is a threaded rod; the support rod (412) is threadedly inserted into the threaded sleeve (7).

8. The paper pressing structure for a printing machine according to claim 3, characterized in that: The end of the support arm (41) is hinged to the outer wall of the printing machine body (1), and the printing machine body (1) is provided with a swing angle adjustment member for adjusting the swing angle of the support arm (41).

9. The paper pressing structure for a printing machine according to claim 8, characterized in that: The swing angle adjustment member is a swing angle cylinder (6), the cylinder body of the swing angle cylinder (6) is hinged to the outer wall of the printing machine body (1), and the piston rod of the swing angle cylinder (6) is hinged to the support arm (41).

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