Paper feeding and cutting mechanism

Abstract

The utility model relates to the technical field of packaging, in particular to a paper feeding and cutting mechanism which comprises a paper feeding rack, and a conveying unit used for driving packaging paper, a guiding unit used for guiding the packaging paper and a cutting unit used for cutting the packaging paper are sequentially installed on the paper feeding rack. The conveying unit comprises a paper feeding roller and a driven roller, the driven roller is installed below the paper feeding roller and used for bearing packaging paper, and a channel for the packaging paper to pass through is arranged between the driven roller and the paper feeding roller. The guiding unit comprises a bearing supporting plate which is located on the same tangent line with the driven roller. The cutting unit comprises a cutter roller and a fixed cutter component, a cutter is mounted on the cutter roller, and the cutter is obliquely mounted on the cutter roller; the cutting edge is obliquely arranged on the cutting roller, so that the cutting edge can effectively simulate the paper cutting action of scissors, packaging paper can be cut from one end to the other end, the whole cutting process is high in speed and reliable in cutting, and the packaging process does not need to be stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a paper feeding and cutting mechanism. Background Art

[0002] In the production process of a paper mill, after the paper roll comes off the rewinder, it needs to be transported to the three-dimensional warehouse through the chain conveyor line for storage. The paper roll will be damaged at the joints of the chain conveyor, and the paper roll stored in the three-dimensional warehouse will absorb moisture from the air and get damp. Therefore, the paper roll needs to be packaged after it comes off the line to prevent damage and moisture. Existing packaging machines all include a mechanism for feeding and cutting paper. Generally speaking, there are no special requirements for the cutting knife used to cut the packaging paper, and it can meet the needs of cutting the packaging paper. However, after research by our company, it is believed that cutting knives with different cutting methods can affect the packaging efficiency. Therefore, a paper feeding and cutting mechanism is provided to simulate the action of scissors cutting paper, so that the packaging machine does not need to be stopped during operation, thereby improving the packaging efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a paper feeding and cutting mechanism, which has the advantage of not needing to stop the machine when cutting on a packaging machine, and solves the problems in the background technology.

[0004] The paper feeding and cutting mechanism of the utility model comprises: a paper feeding frame, on which a conveying unit for driving the packaging paper, a guiding unit for guiding the packaging paper, and a cutting unit for cutting the packaging paper are sequentially installed;

[0005] The conveying unit includes a paper feeding roller and a driven roller, wherein the driven roller is installed below the paper feeding roller for carrying the packaging paper, and a channel for the packaging paper to pass through is provided between the driven roller and the paper feeding roller;

[0006] The guide unit is arranged at the paper outlet side of the paper feeding roller, and is used to guide the packaging paper into the cutting unit for cutting, and at the same time limit the end of the packaging paper after cutting; the guide unit includes a bearing support plate on the same cutting line as the driven roller;

[0007] The cutting unit comprises a cutting knife roller and a fixed knife component. The cutting knife is installed on the cutting knife roller, and the cutting knife is obliquely installed on the cutting knife roller.

[0008] As a further improvement of the present invention, the guiding unit also includes a limiting plate installed above the carrying pallet and parallel to the carrying pallet. The limiting plate and the side of the carrying pallet close to the channel are bent outward to form a guiding portion that facilitates the packaging paper to enter between the carrying pallet and the limiter.

[0009] As a further improvement of the present invention, the fixed knife component includes a fixed knife frame and a fixed knife block, and the fixed knife frame is installed inside the paper feeder frame through an adjusting screw for adjusting the height.

[0010] As a further improvement of the utility model, the bottom and the paper feeding side of the fixed knife block are respectively provided with a first screw and a second screw, the fixed knife frame is provided with a movable hole for the first screw to move left and right, the first screw is mounted on the fixed knife frame through a nut, and a spring is provided between the nut and the fixed knife frame;

[0011] The second screw rod on the fixed knife block is installed on the paper feeding side of the fixed knife frame through a nut.

[0012] As a further improvement of the utility model, one end of the carrying pallet away from the guide portion is bent downward to form a mounting portion, the mounting portion of the carrying pallet is in contact with the paper feed side of the fixed knife block, and a mounting hole for the second screw to pass through is opened on the mounting portion.

[0013] As a further improvement of the utility model, a tensioning assembly is also installed on the paper feeding side of the paper feeder frame, and the tensioning assembly includes a driving cylinder, a rotating shaft and a tensioning roller. The driving cylinder is connected to the rotating shaft through a swing arm, and the two ends of the rotating shaft are fixedly connected to the two ends of the tensioning roller through a connecting rod.

[0014] As a further improvement of the utility model, two motors are installed on the outer side of the paper feeder frame for driving the paper feed roller and the cutter roller to rotate respectively.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The cutting blade of the utility model is obliquely arranged on the cutting roller, so that the cutting blade can effectively simulate the action of scissors cutting paper, and the packaging paper can be cut from one end to the other end. The whole cutting process is fast and reliable, and the packaging process can be carried out without stopping.

[0017] 2. The utility model can effectively cooperate with the cutting knife to cut the packaging paper through the setting of the fixed knife component. At the same time, the connection between the bearing support plate in the guide unit and the fixed knife component can effectively ensure that the packaging paper runs under the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 for Figure 1 A is an enlarged structural diagram;

[0021] Figure 3 is a schematic diagram of the structure of the tensioning assembly;

[0022] Figure 4 It is a schematic diagram of the top view of the cutting knife on the cutting roller.

[0023] In the figure: 1, paper feed frame; 2, conveying unit; 21, paper feed roller; 22, driven roller;

[0024] 3. guide unit; 31. bearing plate; 31a. mounting portion; 32. limiting plate; 33. guide portion;

[0025] 4. Cutting unit; 41. Cutting knife roller; 42. Cutting knife; 43. Fixed knife component; 431. Fixed knife holder; 432. Fixed knife block; 433. First screw; 434. Second screw; 435. Adjusting screw;

[0026] 5. Tensioning assembly; 51. Driving cylinder; 52. Rotating shaft; 53. Tensioning roller; 54. Swing arm; 55. Connecting rod. DETAILED DESCRIPTION

[0027] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0028] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] See also Figure 1 - Figure 4 The paper feeding and cutting mechanism of the utility model comprises:

[0030] A paper feeder frame 1, on which a conveying unit 2 for driving the wrapping paper, a guiding unit 3 for guiding the wrapping paper, and a cutting unit 4 for cutting the wrapping paper are sequentially mounted;

[0031] The conveying unit 2 includes a paper feeding roller 21 and a driven roller 22. The driven roller 22 is installed below the paper feeding roller 21 for carrying the packaging paper. A channel for the packaging paper to pass through is provided between the driven roller 22 and the paper feeding roller 21.

[0032] The guide unit 3 is arranged at the paper discharge side of the paper feeding roller 21, and is used to guide the packaging paper into the cutting unit 4 for cutting, and at the same time limit the end of the packaging paper after cutting; the guide unit 3 includes a bearing support plate 31 which is on the same cutting line as the driven roller 22;

[0033] The cutting unit 4 includes a cutting roller 41 and a fixed blade component 43 . A cutting blade 42 is mounted on the cutting roller 41 . The cutting blade 42 is obliquely mounted on the cutting roller 41 .

[0034] The guide unit 3 further includes a limit plate 32 installed above the carrying tray 31 and parallel to the carrying tray 31. The limit plate 32 and the side of the carrying tray 31 close to the channel are bent outward to form a guide portion 33 that facilitates the packaging paper to enter between the carrying tray 31 and the limit plate;

[0035] Two motors are installed on the outer side of the paper feeder frame 1 to respectively drive the paper feed roller 21 and the cutter roller 41 to rotate.

[0036] The fixed blade component 43 includes a fixed blade frame 431 and a fixed blade block 432. The fixed blade frame 431 is installed inside the paper feeder frame 1 through an adjusting screw 435 for adjusting the height. A first screw 433 and a second screw 434 are respectively provided at the bottom and the paper feed side of the fixed blade block 432. A movable hole for the first screw 433 to move left and right is provided on the fixed blade frame 431. The first screw 433 is installed on the fixed blade frame 431 through a nut, and a spring is provided between the nut and the fixed blade frame 431; the second screw 434 on the fixed blade block 432 is installed on the paper feed side of the fixed blade frame 431 through a nut. One end of the supporting plate 31 away from the guide portion 33 is bent downward to form a mounting portion 31a. The mounting portion 31a of the supporting plate 31 is in contact with the paper feed side of the fixed blade block 432, and a mounting hole for the second screw 434 to pass through is provided on the mounting portion 31a.

[0037] Among them, since the supporting plate 31 is installed on the fixed knife frame 431 through the second screw 434 and the fixed knife block 432 is installed on the fixed knife frame 431 through the first screw 433, that is, during the debugging of the equipment, the height of the supporting plate 31 and the fixed knife block 432 can be synchronously adjusted by adjusting the screw 435. At the same time, by ensuring that the positions of the fixed knife block 432 and the supporting plate 31 are relatively fixed, the situation that misalignment caused by separate adjustment may be avoided, resulting in operational failures.

[0038] A tensioning assembly 5 is also installed on the paper feeding side of the paper feeder frame 1. The tensioning assembly 5 includes a driving cylinder 51, a rotating shaft 52 and a tensioning roller 53. The driving cylinder 51 is connected to the rotating shaft 52 through a swing arm 54, and both ends of the rotating shaft 52 are fixedly connected to both ends of the tensioning roller 53 through a connecting rod 55.

[0039] When using this utility model:

[0040] The wrapping paper is pulled around the tensioning assembly 5 by the rotation of the material and enters between the paper feeding roller 21 and the driven roller 22, and then enters the guide unit 3. Since the guide portion 33 in the guide unit 3 is bent outward, it is convenient for the wrapping paper to enter between the carrying support plate 31 and the limiting plate 32. Since the fixed knife block 432 is flush with the carrying support plate 31, the wrapping paper will move to the paper outlet side of the paper feeding frame 1 after passing through the fixed knife block 432.

[0041] When the wrapping paper has wrapped the material, the cutting roller 41 is driven by the corresponding motor to rotate. Since the cutting knife 42 on the cutting roller 41 is arranged obliquely, that is, the cutting knife 42 simulates the action of scissors cutting paper, the wrapping paper can be cut from one end to the other. The whole cutting process is fast and reliable, and the packaging process can be carried out without stopping.

[0042] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A paper feeding and cutting mechanism, characterized in that: include: A paper feeder frame (1), on which a conveying unit (2) for driving the wrapping paper, a guiding unit (3) for guiding the wrapping paper, and a cutting unit (4) for cutting the wrapping paper are sequentially mounted; The conveying unit (2) comprises a paper feeding roller (21) and a driven roller (22); the driven roller (22) is installed below the paper feeding roller (21) and is used to carry the packaging paper; a channel for the packaging paper to pass through is provided between the driven roller (22) and the paper feeding roller (21); The guide unit (3) is arranged on the paper outlet side of the paper feeding roller (21) and is used to guide the packaging paper into the cutting unit (4) for cutting and to limit the end of the packaging paper after cutting; the guide unit (3) comprises a bearing support plate (31) which is on the same cutting line as the driven roller (22); The cutting unit (4) comprises a cutting roller (41) and a fixed knife component (43); a cutting knife (42) is mounted on the cutting roller (41); and the cutting knife (42) is obliquely mounted on the cutting roller (41).

2. A paper feeding and cutting mechanism according to claim 1, characterized in that: The guide unit (3) further comprises a limiting plate (32) installed above the carrying pallet (31) and parallel to the carrying pallet (31); the limiting plate (32) and the side of the carrying pallet (31) close to the channel are both bent outward to form a guiding portion (33) for facilitating the entry of packaging paper into the carrying pallet (31) and the limiting plate.

3. The paper feeding and cutting mechanism according to claim 1, characterized in that: The fixed knife component (43) comprises a fixed knife frame (431) and a fixed knife block (432); the fixed knife frame (431) is installed inside the paper feeder frame (1) via an adjusting screw rod (435) for adjusting the height.

4. A paper feeding and cutting mechanism according to claim 3, characterized in that: A first screw rod (433) and a second screw rod (434) are respectively provided at the bottom and the paper feeding side of the fixed knife block (432); a movable hole for the first screw rod (433) to move left and right is provided on the fixed knife frame (431); and the first screw rod (433) is mounted on the fixed knife frame (431) via a nut; The second screw rod (434) on the fixed blade block (432) is mounted on the paper feeding side of the fixed blade frame (431) via a nut.

5. The paper feeding and cutting mechanism according to claim 1, characterized in that: One end of the carrying pallet (31) away from the guide portion (33) is bent downward to form a mounting portion (31a); the mounting portion (31a) of the carrying pallet (31) is in contact with the paper feed side of the fixed knife block (432); and a mounting hole for the second screw rod (434) to pass through is provided on the mounting portion (31a).

6. The paper feeding and cutting mechanism according to claim 1, characterized in that: A tensioning assembly (5) is also installed on the paper feeding side of the paper feeding machine frame (1), and the tensioning assembly (5) comprises a driving cylinder (51), a rotating shaft (52) and a tensioning roller (53). The driving cylinder (51) is connected to the rotating shaft (52) via a swing arm (54), and the two ends of the rotating shaft (52) are fixedly connected to the two ends of the tensioning roller (53) via a connecting rod (55).

7. The paper feeding and cutting mechanism according to claim 1, characterized in that: Two motors are installed on the outer side of the paper feeder frame (1) for respectively driving the paper feed roller (21) and the cutter roller (41) to rotate.

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