Paper pressing device for front lay of printing machine

Abstract

The utility model discloses a printing machine front lay paper pressing device which comprises a cross rod and installation seats arranged at the two ends of the cross rod, a plurality of paper pressing units are arranged on the cross rod, each paper pressing unit comprises a paper pressing roller and an adjusting mechanism used for adjusting the height of the paper pressing roller, and the position of each paper pressing unit on the cross rod can be adjusted. In actual use, the position of each paper pressing unit on the transverse rod can be adjusted, and the height of each paper pressing roller can be adjusted, so that the front lay paper pressing device of the printing machine can be suitable for different types of paper, and the paper pressing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machinery, in particular to a front gauge paper pressing device of a printing press. Background Art

[0002] The front gauge paper pressing device of a printing press is an important component in the paper feeding system of the printing press. It is located near the front gauge, and its main function is to cooperate with the front gauge to position and control the paper feeding so that the paper gripping teeth can accurately clamp the paper. The front gauge paper pressing device in the prior art usually has a number of paper pressing rollers fixed on a cross bar. Although it plays a role in pressing paper, each paper pressing roller cannot be adjusted individually, so it is difficult to apply to different papers, resulting in a general paper pressing effect. In view of the above technical problems, the present application proposes a new front gauge paper pressing device for a printing press. On the basis of ensuring a simple structure, it realizes that each paper pressing roller can be adjusted individually, thereby improving the scope of application and being able to effectively press different papers.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a front gauge paper pressing device for a printing press, aiming to solve the technical problem that the front gauge paper pressing device in the prior art is difficult to be applied to different papers.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A front gauge paper pressing device for a printing press comprises a cross bar and mounting seats arranged at both ends of the cross bar. A plurality of paper pressing units are arranged on the cross bar. Each paper pressing unit comprises a paper pressing roller and an adjustment mechanism for adjusting the height of the paper pressing roller. The position of each paper pressing unit on the cross bar can be adjusted.

[0007] Furthermore, in the front gauge paper pressing device of the printing press, each adjustment mechanism includes a hanging rod, a lever rotatably connected to the hanging rod, and an adjusting bolt; each paper pressing roller is rotatably connected to the first force arm of the corresponding lever; and the bottom end of each adjusting bolt is respectively abutted against the top end of the second force arm of the corresponding lever.

[0008] Furthermore, in the front gauge paper pressing device of the printing press, each adjusting bolt is respectively provided with a locking nut.

[0009] Furthermore, in the front gauge paper pressing device of the printing press, each hanging rod is provided with an elastic element, one end of each elastic element is connected to the first lever of the corresponding lever, and applies a downward force to the first lever.

[0010] Furthermore, in the front gauge paper pressing device of the printing press, each elastic element is a torsion spring, and one end of each torsion spring is connected to the first lever arm of the corresponding lever.

[0011] Furthermore, in the front platen paper pressing device of the printing press, each paper pressing roller comprises a metal roller and a rubber roller arranged on the outer layer of the metal roller.

[0012] Furthermore, in the front gauge paper pressing device of the printing press, each hanging rod is respectively provided with a guide hole, and the cross bar passes through the guide hole of each hanging rod, and the shape of the guide hole is adapted to the shape of the cross bar.

[0013] Furthermore, in the front platen paper pressing device of the printing press, the guide hole is a polygonal hole.

[0014] Beneficial Effects: This utility model provides a front-platen paper pressing device for a printing press. Compared to the prior art, by providing a plurality of paper pressing units on a crossbar, and by adjusting the position of each paper pressing unit on the crossbar, the height of each paper pressing roller can be adjusted, thereby making it suitable for different types of paper in actual use and improving the paper pressing effect. Furthermore, by providing an adjustment bolt, the user can quickly adjust the height of the paper pressing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional printing press front plate paper pressing device Figure 1 .

[0016] Figure 2 The utility model provides a three-dimensional printing press front plate paper pressing device Figure 2 .

[0017] Figure 3 for Figure 1 A local magnified view of the middle S1 region.

[0018] Figure 4 for Figure 1 A local magnified view of the middle S2 region.

[0019] Figure 5 for Figure 2 A local magnified view of the middle S3 region.

[0020] Figure 6 This is the front view of the paper pressing unit.

[0021] Figure 7 This is a three-dimensional diagram of the hanging rod and torsion spring. DETAILED DESCRIPTION

[0022] The present invention provides a front platen paper pressing device for a printing press. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.

[0023] See also Figures 1 to 7 The present utility model provides a front gauge paper pressing device for a printing press. The accompanying drawings are only used to explain the structural principles and are not proportional to the actual product. The accompanying drawings only depict structures related to the invention of this application, and some conventional structures are not specifically depicted. The terms "first", "second", etc. described herein are merely different names for similar structures for the convenience of explanation, and are not intended to limit this application. The "several" described herein refers to an indefinite number, because the number of structures referred to is not an invention point, and therefore is not specifically limited.

[0024] The front gauge paper pressing device of the printing press includes a cross bar 1 and mounting seats 2 arranged at both ends of the cross bar. Several paper pressing units 3 are arranged on the cross bar. Each paper pressing unit 3 includes a paper pressing roller 39 and an adjustment mechanism for adjusting the height of the paper pressing roller. The position of each paper pressing unit on the cross bar can be adjusted, and the height of each paper pressing roller can be adjusted separately.

[0025] Specifically, each adjustment mechanism includes a hanging rod 31, a lever 32 rotatably connected to the hanging rod, and an adjusting bolt 33; each paper pressing roller is rotatably connected to the first lever arm (i.e., the lever arm pointing downward in the figure 6) of the corresponding lever.

[0026] like Figure 6 As shown, each hanging rod is provided with an adjustment bolt 33 facing downward. The bottom end of each adjustment bolt abuts against the top end of the second lever arm 322 (i.e., the upward lever arm) of the corresponding lever. During use, the adjustment bolt is turned to control the angle of the lever, thereby adjusting the height of the paper pressing roller. The purpose of providing the adjustment bolt is not only to accommodate paper of varying thicknesses, but also to precisely adjust the height of the paper pressing roller to adjust the force applied by the paper pressing roller. This ensures that the paper is tightly fitted to the corresponding conveying component (not shown) during the feeding process while avoiding excessive pressure, thereby preventing paper scraping (i.e., surface damage) during the feeding process.

[0027] Furthermore, each adjusting bolt is equipped with a locking nut 34. As shown in the figure, each hanging rod has a protrusion, each of which has a threaded hole (not shown in the figure), into which the adjusting bolt is screwed. After each adjusting bolt is adjusted into position, the corresponding locking nut is tightened to prevent the adjusting nut from loosening during operation.

[0028] Further, each hanging rod is provided with an elastic element 38, one end 381 of each elastic element is in abutment with the hanging rod, the other end is connected with the first force arm of the corresponding lever and exerts a downward force on the first force arm. This arrangement makes the paper pressing roller have a tendency to be pressed downward, thus achieving the purpose of pressing paper.

[0029] Preferably, each elastic element 38 is a torsion spring, one end 381 of each torsion spring is connected with the first force arm 321 of the corresponding lever. As shown in the attached Figure 3 and the attached Figure 7 It can be observed that the bottom of the hanging rod is provided with a pivot 37. During assembly, the torsion spring is sleeved on the pivot, one end of the torsion spring is in abutment with the first force arm, and the other end (not observable in the figure) is in abutment with the hanging rod.

[0030] Further, as shown in the attached Figure 6 each paper pressing roller 39 respectively comprises a metal roller 391 and a rubber roller 392 provided on the outer layer of the metal roller. The metal roller is used to ensure that the paper pressing roller has sufficient mechanical strength, and the rubber roller 392 on the outer side can deform to a certain extent when pressing paper, so as to ensure that the paper will not be damaged.

[0031] Further, each hanging rod is provided with a guide hole 310, the cross rod passes through the guide hole of each hanging rod, and the shape of the guide hole is adapted to the shape of the cross rod. This arrangement is to achieve that each hanging rod can move along the cross rod, so as to adjust the position of each paper pressing roller in the transverse direction. As can be observed from the attached figure, each guide hole is respectively provided with a locking screw 319. When the transverse position of the paper pressing unit is adjusted to the right position, the corresponding locking screw can be tightened.

[0032] Preferably, the guide hole 310 is a polygonal hole. Correspondingly, the interface of the cross rod is also a polygonal shape adapted to the shape of the guide hole. This arrangement is to avoid the rotation of the paper pressing unit around the cross rod.

[0033] The structure of the mounting seat can have various forms, as shown in the attached Figure 4 , a simple implementation is provided here: each mounting seat 2 respectively comprises a horizontal plate 21 and a vertical plate 22 connected with each other, each horizontal plate is connected with the cross rod bolt 19, and each vertical plate is provided with a connecting hole 220 for connection with the printing machine through the bolt 229 (only one bolt 229 is schematically shown in the figure).

[0034] Because the described front gauge paper pressing device for a printing press has a simple and compact structure and occupies very little installation space, it can be conveniently installed near the front gauge of the printing press, making it easy for the printing press to replace the front gauge paper pressing device provided by this application. During use, the position of each paper pressing unit on the crossbar (i.e., the lateral position of the paper pressing wheel) can be adjusted according to the specific conditions of the paper (e.g., thickness, moisture content, etc.), and the height of each paper pressing wheel can be adjusted using various adjustment bolts, thereby achieving a good paper pressing effect for different paper types.

[0035] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the present utility model, and all these changes or substitutions should fall within the scope of protection of the present utility model.

Claims

1. A front platen paper pressing device for a printing press, comprising a crossbar and mounting seats disposed at both ends of the crossbar, characterized in that: Several paper pressing units are arranged on the cross bar, each of which includes a paper pressing roller and an adjusting mechanism for adjusting the height of the paper pressing roller, and the position of each paper pressing unit on the cross bar can be adjusted; each adjusting mechanism includes a hanging rod, a lever rotatably connected to the hanging rod, and an adjusting bolt; each paper pressing roller is rotatably connected to the first force arm of the corresponding lever; the bottom end of each adjusting bolt is respectively abutted against the top end of the second force arm of the corresponding lever; each adjusting bolt is respectively provided with a locking nut; each hanging rod is respectively provided with an elastic element, one end of each elastic element is connected to the first force arm of the corresponding lever, and applies downward force to the first force arm; each elastic element is a torsion spring, and one end of each torsion spring is connected to the first force arm of the corresponding lever.

2. The front platen device for a printing press according to claim 1, characterized in that: Each paper pressing roller comprises a metal roller and a rubber roller arranged on the outer layer of the metal roller.

3. The front platen paper pressing device of a printing press according to claim 1, characterized in that: Each hanging rod is provided with a guide hole, and the cross bar passes through the guide hole of each hanging rod, and the shape of the guide hole is adapted to the shape of the cross bar.

4. The front platen paper pressing device of a printing press according to claim 3, characterized in that: The guide hole is a polygonal hole.

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