Pressing strip structure of paper collecting shutter of banknote printing machine

Abstract

The utility model discloses a paper collecting shutter pressing strip structure of a paper money printing machine, and relates to the technical field of printing machinery. The pressing strip comprises a pressing strip body, a pressing strip support is arranged on one side of the pressing strip body, a clamping assembly is arranged on one side of the pressing strip body, and the clamping assembly comprises a guide sliding way arranged on one side of the pressing strip body and an elastic positioning pin arranged at the bottom of the pressing strip body. Rapid positioning and locking of the pressing strip are achieved through the clamping assembly, the tedious operation of traditional multi-point bolt fixing is abandoned through the sliding fit design of the guide sliding way and the elastic positioning pin, the time consumed for installation of the pressing strip is greatly shortened, the reloading efficiency of high-speed printing equipment is remarkably improved, and meanwhile the cost is reduced. The wear-resistant coating effectively reduces the friction loss of the guide slide way and the elastic positioning pin, and is matched with the continuous pressing force of the elastic positioning pin, so that the loosening problem caused by vibration or thermal expansion and cold contraction is solved, the service life of the pressing strip is prolonged, and the equipment maintenance frequency and the production cost are greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of printing machinery technology, and in particular relates to a paper receiving shutter pressure strip structure for a banknote printing machine. Background Technology

[0002] In the paper receiving process of a banknote printing machine, the sealing performance and ease of installation of the UV curing lamp cover directly affect the quality of printed materials and production efficiency. In the existing technology, the UV lamp cover pressure strip for paper receiving is mostly fixed with bolts or a single snap-fit ​​structure, which has the following technical defects.

[0003] Traditional pressure strips require multiple bolts to be aligned and tightened one by one, which is cumbersome and cannot meet the rapid changeover requirements of high-speed printing equipment. The mating surfaces of the pressure strip and the bracket are mostly planar, which can easily lead to increased gaps (usually ≥0.2mm) due to thermal expansion and contraction or vibration after long-term use, causing UV light leakage, uneven curing, or abnormal paper reflection. To address these issues, we have developed a pressure strip structure for the paper receiving shutter of a banknote printing machine. Utility Model Content

[0004] The purpose of this utility model is to provide a paper receiving shutter pressure strip structure for a banknote printing machine. Through the cooperation of the pressure strip bracket and the snap-fit ​​component, it solves the problem that the existing technology is difficult to meet the rapid changeover requirements of high-speed printing equipment. The mating surfaces of the pressure strip and the bracket are mostly planar contacts, and long-term use is prone to the problem of increased gap due to thermal expansion and contraction or vibration, resulting in UV light leakage.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a paper receiving shutter pressure strip structure for a banknote printing machine, comprising a pressure strip body, a pressure strip bracket on one side of the pressure strip body, and a snap-fit ​​assembly on one side of the pressure strip body. The snap-fit ​​assembly includes a guide slide on one side of the pressure strip body and an elastic positioning pin at the bottom of the pressure strip body. The contact surfaces of the guide slide and the elastic positioning pin are both provided with a wear-resistant coating.

[0007] The present invention is further provided that a sealing lip is provided on one side of the pressure strip body, and the sealing lip and the UV lamp cover are in a tapered structure with a root width of 5-8mm.

[0008] The present invention is further provided that the surface of the pressure strip bracket is provided with laser-engraved scale markings, the scale markings are distributed along the adjustment direction of the pressure strip body, and the scale division value is 0.02mm.

[0009] The present invention is further configured such that the guide slide is a dovetail groove structure with a groove width of 8±0.2mm and a depth of 5±0.1mm.

[0010] The present invention is further configured such that the elastic positioning pin is in the shape of a barb, and the length of the elastic positioning pin is 8.5±0.2mm.

[0011] The present invention has the following beneficial effects.

[0012] 1. This utility model achieves rapid positioning and locking of the pressure strip through a snap-fit ​​assembly. Its sliding cooperation design between the guide slide and the elastic positioning pin eliminates the cumbersome operation of traditional multi-point bolt fixing, greatly shortening the installation time of the pressure strip and significantly improving the changeover efficiency of high-speed printing equipment. At the same time, the wear-resistant coating effectively reduces the frictional wear between the guide slide and the elastic positioning pin. Combined with the continuous clamping force of the elastic positioning pin, it solves the loosening problem caused by vibration or thermal expansion and contraction, extending the service life of the pressure strip and significantly reducing the frequency of equipment maintenance and production costs.

[0013] 2. This utility model adopts a sealing lip structure with a tapered design that is wide at the root and narrow at the end, which significantly improves the sealing performance. Compared with the gap of more than 0.2mm that is easily generated by traditional planar contact, this structure controls the mating gap within the range of 0.02-0.08mm through adaptive deformation, effectively suppressing UV light leakage and improving curing uniformity. At the same time, the laser-engraved scale markings and the dovetail groove guide structure work together to improve the accuracy of pressure strip adjustment, perfectly meeting the high precision requirements of banknote printing machines for UV curing position.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 This is a three-dimensional diagram of the paper receiving shutter pressure bar structure of a banknote printing machine.

[0017] Figure 2 This is a side view of the paper receiving shutter pressure bar structure of a banknote printing machine.

[0018] Figure 3 This is a bottom view of the paper receiving shutter pressure bar structure of a banknote printing machine.

[0019] Figure 4 This is a cross-sectional view of the paper receiving shutter pressure strip structure of a banknote printing machine.

[0020] In the attached diagram: 1. Pressure strip body; 2. Pressure strip bracket; 3. Guide slide; 4. Elastic positioning pin; 5. Sealing lip. Detailed Implementation

[0021] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1

[0023] Please see Figures 1-4 This utility model relates to a paper receiving shutter pressure strip structure for a banknote printing machine, comprising a pressure strip body 1, a pressure strip bracket 2 on one side of the pressure strip body 1, and a snap-fit ​​assembly on one side of the pressure strip body 1. The snap-fit ​​assembly includes a guide slide 3 on one side of the pressure strip body 1 and an elastic positioning pin 4 at the bottom of the pressure strip body 1. The contact surfaces of the guide slide 3 and the elastic positioning pin 4 are both coated with a wear-resistant coating. Through the snap-fit ​​assembly, the pressure strip can be quickly positioned by sliding engagement, eliminating the need for multi-point bolt tightening. This is suitable for the changing requirements of high-speed printing equipment. The elastic positioning pin 4 provides continuous clamping force to prevent loosening due to vibration or thermal expansion and contraction.

[0024] Example 2

[0025] Please see Figures 1-4 Based on Example 1, a sealing lip 5 is provided on one side of the pressure strip body 1. The sealing lip 5 and the UV lamp cover have a tapered structure with a root width of 5-8mm. The tapered design eliminates the potential gap of planar contact, and the fit gap is controlled at 0.02-0.08mm to reduce light leakage. The pressure strip bracket 2 has laser-engraved scale markings on its surface. The scale markings are distributed along the adjustment direction of the pressure strip body 1, and the graduation value is 0.02mm. The guide slide 3 has a dovetail groove structure with a groove width of 8±0.2mm and a depth of 5±0.1mm. The dovetail groove structure prevents the pressure strip from shifting laterally and ensures accurate movement trajectory. The elastic positioning pin 4 is hook-shaped with a length of 8.5±0.2mm. The hook-shaped design increases the meshing area between the positioning pin and the guide slide 3.

[0026] The working principle of this utility model is as follows: During installation, the main body 1 of the pressure strip slides with the guide slide 3 of the pressure strip bracket 2 through the elastic positioning pin 4 at the bottom. The barbed design of the elastic positioning pin 4 causes it to deform elastically when subjected to force. The wear-resistant coating reduces frictional resistance, making the main body 1 of the pressure strip move more smoothly along the axial direction of the pressure strip bracket 2. It can be quickly positioned by pushing with one hand, eliminating the tedious operation of tightening bolts point by point in the traditional method. The sealing lip 5 on the inner side of the main body 1 adopts a tapered structure, and its end is in close contact with the surface of the UV lamp cover. When the pressure strip expands due to heat or the equipment vibrates, the sealing lip 5 can compensate for the gap through its own deformation, strictly controlling the mating gap within the range of 0.02-0.08mm, effectively blocking UV light leakage. The design also enhances the tear resistance of the lip, avoiding the cracking problem caused by long-term compression of traditional flat seals. The dovetail groove guide slide 3 restricts the lateral displacement of the pressure strip body 1, and combined with the continuous clamping force of the elastic positioning pin 4, forms a multi-directional constraint, effectively suppressing loosening caused by equipment operation vibration and ensuring long-term stability.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A structure of a press bar of a paper collecting shutter of a banknote printing machine, comprising a press bar body (1), characterized in that: The pressing strip body (1) is provided with a pressing strip support (2) on one side, and a clamping assembly is arranged on one side of the pressing strip body (1); the clamping assembly comprises a guide slide (3) arranged on one side of the pressing strip body (1) and an elastic positioning pin (4) at the bottom of the pressing strip body (1), and the contact surfaces of the guide slide (3) and the elastic positioning pin (4) are provided with wear-resistant coatings; through the arrangement of the clamping assembly, the pressing strip is quickly positioned through sliding fit.

2. A structure of a presser bar of a paper take-up shutter of a banknote printing press according to claim 1, characterized in that: The pressing strip body (1) is provided with a sealing lip (5) on one side, and the contact surface of the sealing lip (5) and the UV lamp cover is in a tapered conical structure, and the root width is 5-8 mm.

3. The structure of the presser bar of the paper take-up shutter of the banknote printing press according to claim 1, characterized in that: The pressing strip support (2) is provided with a laser-engraved scale mark on the surface, the scale mark is distributed along the adjusting direction of the pressing strip body (1), and the graduation value is 0.02 mm.

4. The structure of the presser bar of the paper take-up shutter of the banknote printing press according to claim 1, characterized in that: The guide slide (3) is in a dovetail groove structure, the groove width is 8±0.2 mm, and the depth is 5±0.1 mm.

5. The structure of the presser bar of the paper take-up shutter of the banknote printing press according to claim 1, characterized in that: The elastic positioning pin (4) is in a barb shape, and the length of the elastic positioning pin (4) is 8.5±0.2 mm.

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