Folding apparatus and folding knife therefor
By designing avoidance notches and oblique teeth on the folding blades of the folding equipment, the problem of glue rubbing off the folding blades was solved, thus improving the yield rate of drug instruction manuals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN LINGFENG GLOBAL PRINTING TECHNOLOGY CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-12
Smart Images
Figure CN224350095U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of packaging equipment technology, and in particular to a folding knife for a folding machine and a folding machine. Background Technology
[0002] Folding machines are commonly used in pharmaceutical packaging, primarily for folding drug instruction leaflets. The general folding process involves the leaflet paper first passing along a conveyor belt past an adhesive dispensing device. This device applies adhesive to the center of the paper, securing it after folding. After adhesive application, the paper travels along the conveyor belt to the folding blade. Two handpieces first correct the paper's position and restrict its movement. Then, the folding blade presses down, moving the paper towards folding rollers. The rotation of the folding rollers performs the final folding operation. However, the folding blades on the folding machine... Figure 1 As shown, it is easy to get glue on the paper during use. When pressing the paper down, this glue may spread to other areas of the paper, causing the folded paper to stick together where it should not be, affecting the product yield. Utility Model Content
[0003] This application provides a folding knife for a folding device and a folding device, which can effectively solve the problem of adhesive rubbing when traditional folding knives are used to fold drug instructions.
[0004] The above-mentioned objective of this application is achieved through the following technical solution:
[0005] On one hand, a folding knife for a folding device includes a metal blade, and a pressing head is provided on one side of the metal blade, the pressing head and the metal blade being fixedly connected;
[0006] The pressing blade has an avoidance notch at the middle position on the side away from the metal blade body, and the width of the avoidance notch is greater than the width of the glue on the paper to be folded.
[0007] The pressing head is also provided with a paper contact unit on the side away from the metal blade to increase the friction between the pressing head and the paper to be folded.
[0008] Furthermore, the width of the pressing blade is smaller than the width of the metal blade and not greater than the width of the paper to be folded; the pressing blade is located in the middle of the lower side of the metal blade.
[0009] Furthermore, the pressing head and the blade body are integrally formed, and the depth of the notches on the outer sides of both ends of the pressing head is not less than the travel distance of the folding knife pressing the paper to be folded.
[0010] Furthermore, the paper contact unit includes two rows of toothed blades, both of which are disposed on the lower side of the pressing blade head, and the two rows of gears are symmetrical about the avoidance notch.
[0011] Furthermore, the cutting tool is designed with helical teeth.
[0012] Furthermore, the size of the toothed blade is smaller than that of the toothed blade on the lower side of the existing folding knife, and the number of toothed blades per unit length on the lower side of the pressing head is greater than the number of toothed blades per unit length on the lower side of the existing folding knife.
[0013] Furthermore, the metal blade is provided with multiple mounting holes.
[0014] On the other hand, this application also provides a folding device, including the folding knife for the folding device described above, a mounting base plate and two clappers;
[0015] The folding blade is fixedly mounted on the mounting base plate;
[0016] Furthermore, the two clappers installed on the folding device are located on both sides of the pressing head.
[0017] In summary, this application includes at least one of the following beneficial technical effects:
[0018] The folding knife of this application has a specially provided clearance notch on the pressing head that is used to contact the paper to be folded. The width of the clearance notch is greater than the width of the glue applied to the paper by the glue dispensing device. In this way, the risk of glue sticking to the folding knife on the paper to be folded can be greatly reduced during the folding process, thereby effectively improving the yield of folded drug instruction leaflets in the production process. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of a folding knife in the prior art;
[0021] Figure 2 This is a schematic diagram of the overall structure of this application;
[0022] Figure 3 This is a comparison image of a folding knife from the prior art and the folding knife of this application stacked together;
[0023] Figure 4This is a schematic diagram of a folding knife in the prior art and the clapping structure to which it is applicable;
[0024] Figure 5 This is a schematic diagram of the improved folding knife of this application and the clapping structure to which it is applicable;
[0025] Figure 6 This is a schematic diagram of the state of the improved folding knife when pressing down the paper.
[0026] Reference numerals: 1. Metal blade; 2. Pressing blade head; 3. Clearance notch; 4. Paper contact unit; 41. Toothed blade; 5. Hole; 6. Mounting base plate; 7. Clapping hand. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0028] like Figure 2 and Figure 3 As shown, a folding knife for a folding device disclosed in this application includes a metal blade 1, and a pressing head 2 is provided on one side of the metal blade 1. The pressing head 2 and the metal blade 1 are fixedly connected.
[0029] The pressing head 2 has an avoidance notch 3 at the middle position on the side away from the metal blade 1. The depth of the avoidance notch 3 is greater than the thickness of the glue on the paper to be folded, and the width of the avoidance notch 3 is greater than the width of the glue on the paper to be folded.
[0030] The pressing head 2 is also provided with a paper contact unit 4 on the side away from the metal blade 1 to increase the friction between the pressing head 2 and the paper to be folded.
[0031] In the above embodiments, the metal blade 1 of this application is the main body of the folding knife. After the folding equipment is started, the pressing head 2 on the lower side of the metal blade 1 is responsible for pressing the paper to be folded downward through the paper contact unit 4, so that the paper to be folded moves towards the folding roller. In the folding knife of this application, a clearance notch 3 is specially provided on the pressing head 2 used to contact the paper to be folded. The depth of the clearance notch 3 is greater than the distance between the glue applied by the glue dispensing device on the paper to be folded and the crease of the paper to be folded when the metal blade 1 feeds the paper to be folded into the folding roller. The width of the clearance notch 3 is greater than the width of the glue applied by the glue dispensing device on the paper (the width direction in this application refers to the width direction based on the folding equipment, which is in the same direction as the crease direction on the paper). In this way, whether the glue on the paper to be folded passes through the folding knife or the folding knife presses down on the paper to be folded, the risk of glue sticking to the folding knife on the paper to be folded can be reduced, thereby effectively improving the yield of folded drug instructions in the production process.
[0032] Furthermore, such as Figure 6 As shown, the width of the pressing head 2 is less than the width of the metal blade 1 and not greater than the width of the paper to be folded; the pressing head 2 is located in the middle of the lower side of the metal blade 1.
[0033] In the above embodiments, to ensure the accuracy of the paper's position during the folding process, the paper is usually clamped by the clappers 7 on both sides. The existing folding blade is rectangular, and its blade size allows it to cover the mounting base 6 on the folding device. While the folding blade can fold various paper sizes, for paper smaller than the blade, to prevent interference between the folding blade and the clappers 7 during the downward pressing process, the end size of the clappers 7 is usually set relatively short (e.g., ...). Figure 4 As shown, the position of the clapping hand 7 facing the folding knife will not exceed the blade of the folding knife. However, this will result in a smaller area where the clapping hand 7 can hold the paper. If the folding knife presses down on the paper at the center line of the paper, the area where the clapping hand 7 holds the paper will be less than half of the paper. This makes it easy for the paper to become skewed during the folding process.
[0034] To address the aforementioned issues, this application specifically sets the width of the pressing head 2, located below the center of the metal blade 1, to be no greater than the width of the paper to be folded (ideally, the width of the pressing head 2 should be less than the width of the paper to be folded), and the width of the pressing head 2 should be less than the width of the metal blade 1. Figure 5 and Figure 6As shown, when folding the paper to be folded, the two sides of the pressing head 2 in the width direction will not exceed the edge of the paper to be folded. The width of the pressing head 2 is smaller than that of the metal blade 1. This allows two notches to be formed between the metal blade 1, which is stably connected to the mounting base 6 on the folding device, and the pressing head 2. These two notches allow the size of the clapper 7 facing the pressing head 2 to be longer. When the pressing head 2 feeds the paper to be folded into the folding roller, the clapper 7 can improve the limiting effect of the paper to be folded by making full contact with more areas of the edge of the paper to be folded, reducing the risk of the paper to be skewed during the folding process.
[0035] Furthermore, such as Figure 2 , Figure 5 and Figure 6 As shown, the pressing head 2 and the blade body are integrally formed, and the depth of the notch on the outer sides of both ends of the pressing head 2 is not less than the travel distance of the folding knife pressing the paper to be folded.
[0036] In the above embodiments, the pressing head 2 and the blade body of this application are processed from a single piece of metal plate. The depth of the notch between the pressing head 2 and the blade body due to the width difference is greater than the maximum travel distance of the folding knife during the pressing of the paper to be folded. In this way, after the clapping hand 7 clamps the paper, the pressing head 2 will not be obstructed by the clapping hand 7 when pressing the paper to be folded and moving towards the folding roller.
[0037] Furthermore, such as Figure 2 and Figure 3 As shown, the paper contact unit 4 includes two rows of toothed blades 41, both rows of toothed blades 41 are disposed on the lower side of the pressing blade head 2, and the two rows of gears are symmetrical about the avoidance notch 3.
[0038] In the above embodiments, the pressing head 2 on the lower side of the metal blade 1 of this application is inverted "concave" shape. The two protrusions on the pressing head 2 are the main parts that come into contact with the paper during the pressing process. The two rows of toothed blades 41 of this application are respectively set on the two protrusions of the pressing head 2. In this way, the pressing head 2 can use the toothed blades 41 to press the paper to be folded. Compared with setting the protrusions of the pressing head 2 to be flat, the toothed blades 41 can increase the friction between the pressing head 2 and the paper to be folded, thereby preventing the paper to be folded from slipping during the pressing process of the pressing head 2 and causing misalignment of the fold. At the same time, when folding the paper, the toothed blades 41 can simultaneously complete the creasing on the paper when the folding blade falls as a whole, realizing an operation similar to pre-crease.
[0039] Furthermore, such as Figure 2 As shown, the toothed cutter 41 has a helical tooth design.
[0040] In the above embodiments, the toothed blade 41 of this application not only has inclined toothed blades, but its tip is also polished, so as to avoid damaging the paper during the process of pressing down the paper to be folded.
[0041] Furthermore, such as Figure 3 As shown, the size of the toothed blade 41 is smaller than that of the toothed blade 41 on the lower side of the existing folding knife, and the number of toothed blades 41 per unit length on the lower side of the pressing head 2 is greater than the number of toothed blades 41 per unit length on the lower side of the existing folding knife.
[0042] In the above embodiments, the toothed blades 41 on the lower side of the pressing head 2 of this application are smaller than the toothed blades 41 on the lower side of the existing folding blade. The number of toothed blades 41 per unit length on the lower side of the pressing head 2 of this application is also greater than the number of toothed blades 41 per unit length on the lower side of the existing folding blade. In this way, the density of toothed blades 41 on the lower side of the pressing head 2 of this application that are in contact with the paper will be greater, and the force applied to the paper by the toothed blades 41 during the pressing process will be more uniform.
[0043] Furthermore, such as Figure 3 As shown, the metal blade 1 has multiple mounting holes 5.
[0044] In the above embodiments, the holes 5 on the metal blade 1 can be used to fix the metal blade 1 onto the mounting base plate 6 of the folding device by means of bolts and nuts.
[0045] Through numerous experiments, the applicant improved the overall shape of the folding knife, as well as the shape and distribution density of the toothed blades 41. After a month of production and debugging of the new folding knife in the folding equipment, the problems of paper skewing and easy glue rubbing during the folding process were finally solved. The scrap rate caused by these problems was reduced from 6.5% to 0.35%, showing a particularly significant improvement.
[0046] This application also discloses a folding device, including the aforementioned folding device blade, mounting base plate, and two clapping hands 7; the folding blade is fixedly mounted on the mounting base plate 6; and the two clapping hands 7 mounted on the folding device (the specific connection method between the clapping hands 7 and the folding device can be found in the prior art for the mounting method of the clapping hands 7) are respectively located on both sides of the pressing head 2.
[0047] Since the folding device of this application includes the folding knife of the folding device in the above embodiments, it has all the advantages of the folding knife of the folding device described above, and the relevant content will not be repeated here.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A folding blade for a folding device, comprising a metal blade (1), characterized in that: A pressing head (2) is provided on one side of the metal blade (1), and the pressing head (2) and the metal blade (1) are fixedly connected; The pressing blade (2) has an avoidance notch (3) at the middle position on the side away from the metal blade (1), and the width of the avoidance notch (3) is greater than the width of the glue on the paper to be folded; The pressing head (2) is further provided with a paper contact unit (4) on the side away from the metal blade (1) to increase the friction between the pressing head (2) and the paper to be folded.
2. The folding knife for the folding device according to claim 1, characterized in that: The width of the pressing head (2) is less than the width of the metal blade (1) and not greater than the width of the paper to be folded; the pressing head (2) is located in the middle position on the lower side of the metal blade (1).
3. The folding knife for the folding device according to claim 2, characterized in that: The pressing head (2) and the blade body are integrally formed, and the depth of the notch on the outer sides of both ends of the pressing head (2) is not less than the travel distance of the folding knife pressing the paper to be folded.
4. The folding knife for the folding device according to any one of claims 1 to 3, characterized in that: The paper contact unit (4) includes two rows of toothed blades (41), both rows of toothed blades (41) are located on the lower side of the pressing head (2), and the two rows of gears are symmetrical about the avoidance notch (3).
5. The folding knife for the folding device according to claim 4, characterized in that: The tooth cutter (41) is a helical tooth design.
6. The folding knife for the folding device according to claim 5, characterized in that: The specifications of the toothed blade (41) are smaller than those of the toothed blade (41) on the lower side of the existing folding knife, and the number of toothed blades (41) per unit length on the lower side of the pressing head (2) is greater than the number of toothed blades (41) per unit length on the lower side of the existing folding knife.
7. The folding knife for the folding device according to any one of claims 1 to 3, characterized in that: The metal blade (1) is provided with multiple mounting holes (5).
8. A folding device, characterized in that: Includes a folding knife for a folding device as described in any one of claims 1-7, a mounting base plate (6), and two clappers (7); The folding blade is fixedly mounted on the mounting base plate (6); The two clappers (7) installed on the folding device are located on both sides of the pressing head (2).