Paper sheet feeding and cutting mechanism
By using the combination of two cutting tools and a paper belt conveyor in the roll wrapping equipment, the complex structure and high cost problems in the existing equipment are solved, and efficient cutting of trapezoidal paper sheets and equipment simplification are achieved.
Patent Information
- Application Number
- CN202421575754.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-04
AI Technical Summary
In the existing paper roll packaging equipment, the loading and cutting mechanism using three cutting tools leads to complex structure and serious interference with each other, which increases costs.
A paper sheet feeding and cutting mechanism is designed, using two cutting tools and a paper belt conveying device. The first cutting tool cuts the feeding paper belt into two parallel bottom edges. The second cutting tool cuts the feeding paper belt obliquely along the feeding direction on one side of the paper belt conveying device to form the two waists of the trapezoidal paper sheet.
The cutting structure is simplified, the reliability of the equipment is improved, the cost is reduced, and the efficient cutting of trapezoidal paper sheets is achieved.
Smart Images
Figure CN222807260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of roll paper packaging equipment, in particular to a paper sheet feeding and cutting mechanism. Background Art
[0002] After the paper sheet with special shape is loaded, it is rolled into the corresponding roll shape by the roll forming core shaft. For example, when the shape of the paper sheet is a trapezoidal paper sheet (such as Figure 1 As shown in the figure, including upper and lower bottom edges and two waists), the corresponding roll paper forming core shaft is also a structure with one end large and the other end small, and is rolled into a roll paper shape with one end large and the other end small by the roll paper forming core shaft. In this processing process, it is necessary to first use a feeding and cutting mechanism to cut the raw material to obtain a trapezoidal paper sheet, and then send it to a clamping mechanism for clamping and feeding. The existing feeding and cutting mechanism generally includes three cutting knives, such as Figure 2 As shown, there are two bevel cutting scissors (1 and 2) and a front cutting scissor 3. The two bevel cutting scissors are used to cut the waist of the trapezoidal paper piece into shape. As the paper piece 4 is fed, the two bottom edges of the trapezoidal paper piece are cut by the front cutting scissors. The disadvantage is that the structure of the three cutting scissors makes the overall processing equipment structure complicated, which is easy to cause interference with each other, and the processing equipment cost is high. Utility Model Content
[0003] In view of the above problems, the utility model provides a paper feeding and cutting mechanism to solve the problems of complex processing equipment structure, easy interference between each other and high processing equipment cost caused by the use of three cutting knives in the prior art.
[0004] The paper feeding and cutting mechanism is characterized in that it comprises a paper belt conveying device, a first cutting knife arranged at the front end of the paper belt conveying device, and a second cutting knife arranged at one side of the paper belt conveying device, and meets the following requirements:
[0005] The conveying direction of the feeding paper tape of the paper tape conveying device and the cutting direction of the first cutting knife form an angle α less than 90 degrees; as the paper tape conveying device conveys the feeding paper tape, the first cutting knife cuts the feeding paper tape into two parallel bottom edges;
[0006] The second cutting knife is located on one side of the feed paper tape of the paper tape conveying device, and the cutting direction of the second cutting knife intersects with the corresponding side of the feed paper tape, so as to cut the feed paper tape on this side into a hypotenuse of a trapezoidal paper piece, and the hypotenuse and the other side of the feed paper tape on the paper tape conveying device form two waists of the trapezoidal paper piece.
[0007] Preferably, the cutting position of the first cutting knife intersects the two sides of the feed paper tape at the front intersection and the rear intersection respectively, and the second cutting knife is arranged on the side where the front intersection of the feed paper tape is located. The cutting direction of the second cutting knife is along the feeding direction of the paper tape conveying device, and the cutting line of the second cutting knife gradually deviates from the intersection of the feed paper tape to the other side of the feed paper tape.
[0008] Preferably, the cutting position of the first cutting knife and the two side boundaries of the feed paper tape determine the front intersection and rear intersection along the conveying direction of the feed paper tape, and the second cutting knife is arranged on the side where the rear end intersection of the feed paper tape is located.
[0009] Preferably, the cutting direction of the second cutting knife forms an angle β with the cutting direction of the first cutting knife, and the angle β is equal to the angle α.
[0010] Preferably, a conveying plate section and a pressing block are provided on the paper tape conveying device, and the pressing block is provided above the conveying plate section, and a paper feeding gap is provided between the pressing block and the conveying plate section, so that the feeding paper tape can pass between the conveying plate section and the pressing block. Furthermore, the width of the conveying plate section and the pressing block is less than two-thirds of the width of the feeding paper tape, and the side of the feeding paper tape close to the second cutting knife is suspended to facilitate cutting.
[0011] Preferably, the second cutting knife comprises a sliding cutting knife body, one end of which is rotatably connected via a shaft, a telescopic push rod is connected to the sliding cutting knife body, and the sliding cutting knife body cooperates with the side of the conveying plate section for cutting.
[0012] The beneficial effects of the utility model are as follows: the utility model can realize the cutting of trapezoidal paper pieces by adopting two cutting knives in cooperation with a paper belt conveying device, thereby simplifying the cutting structure, improving reliability and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 Schematic diagram of a trapezoidal paper piece.
[0014] Figure 2 It is a schematic diagram of a feeding and cutting mechanism using three cutting knives in the prior art.
[0015] Figure 3 It is a three-dimensional schematic diagram of the paper feeding and cutting mechanism in this embodiment.
[0016] Figure 4 It is a top view of the paper feeding and cutting mechanism in this embodiment.
[0017] Figure 5 for Figure 4 AA direction schematic diagram in.
[0018] Figure 6 It is a forward schematic diagram of the paper feeding and cutting mechanism.
[0019] Figure 7 The first cutting knife is a schematic diagram showing that the feeding paper tape can be cut into two parallel bottom edges by cutting twice.
[0020] Figure 8 A schematic diagram of a cutting direction of the second cutting knife.
[0021] Fig. 9 A schematic diagram of a cutting direction of the second cutting knife.
[0022] Fig.10 A schematic diagram of a cutting direction of the second cutting knife.
[0023] Fig.11 A schematic diagram of a cutting direction of the second cutting knife.
[0024] Fig.12 for Figure 6 A local enlarged schematic diagram of the .
[0025] Feed paper belt--100 Bottom edge--1101 Upper side of feed paper belt--110 Rear intersection--111 Lower side of feed paper belt--120 Front intersection--121 Intersection point--122 First cutting knife--200 Second cutting knife--300 Cutting direction--301 Sliding cutter body--310 Axle--311 Telescopic push rod--320 Conveying device--400 Feed paper belt limiting structure--410 Conveying plate section--420 Pressing block--430 Frame--500 DETAILED DESCRIPTION
[0026] The technical solution of the utility model will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the implementation methods of the present application, not all of the implementation methods; and the structures shown in the accompanying drawings are only schematic and do not represent physical objects. It should be noted that based on these embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.
[0027] It should be noted that the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical or equivalent elements in the process, method, article or device including the elements.
[0028] The terms "upper", "lower", "inner", "outer", etc. do not constitute absolute spatial relationship limitations, but are only concepts of relative positions, which can be understood by those skilled in the art.
[0029] See also Figure 3-6 A paper feeding and cutting mechanism mainly includes a paper belt conveying device 400, a first cutting knife 200 arranged at the front end of the paper belt conveying device, and a second cutting knife 300 arranged at one side of the paper belt conveying device.
[0030] The paper tape conveying device can adopt a conventional conveying structure to convey the continuous feed paper tape forward along a fixed direction. The paper tape conveying device is arranged on the frame 500, and a feed paper tape limiting structure 410 is arranged on the paper tape conveying device to prevent the feed paper tape from deviating. A conveying plate section 420 is arranged at the front of the paper tape conveying device to facilitate the smooth feeding of the feed paper tape. A pressing block 430 is arranged above the conveying plate section 420, and a paper feeding gap is arranged between the pressing block 430 and the conveying plate section 420, so that the feed paper tape 100 can pass through the middle of the pressing block 430 and the conveying plate section 420, and there is a certain friction between the feed paper tape 100 and the pressing block 430 and the conveying plate section 420.
[0031] The first cutting knife 200 is installed on the frame 500, and is used to cut the continuous feeding paper tape 100 conveyed by the paper tape conveying device horizontally. The first cutting knife can adopt a conventional scissors structure. It should be pointed out that the cutting direction of the first cutting knife 200 and the conveying direction of the feeding paper tape of the paper tape conveying device form an angle α less than 90 degrees, and the angle α is preferably between 45 degrees and 90 degrees. Without considering the second cutting knife, as the paper tape conveying device conveys the continuous feeding paper tape, as Figure 7 As shown, the first cutting knife 200 can cut the feed paper tape 100 into two parallel bottom edges 101 by cutting twice.
[0032] The second cutting knife 300 is installed on one side of the feeding paper tape of the paper tape conveying device, and the cutting direction of the second cutting knife 300 intersects with the side close to the feeding paper tape 100, so as to cut the side of the feeding paper tape 100 close to the second cutting knife obliquely to form an oblique edge. Figure 8In this embodiment, the cutting position of the first cutting knife 200 intersects with the two side edges (110, 120) of the feed paper tape at the front intersection point 121 and the rear intersection point 111 respectively, and the second cutting knife 300 is arranged on the side where the front intersection point 121 of the feed paper tape is located (the lower side of the feed paper tape 100 as shown in the figure). The cutting direction of the second cutting knife 300 is: along the feeding direction, the cutting line gradually deviates from the intersection point 122 of the feed paper tape to the other side of the feed paper tape. The hypotenuse obtained after the feed paper tape 100 is cut by the second cutting knife 300 and the other side of the feed paper tape form the two waists of the trapezoidal paper piece. As the feed paper tape moves, after the first cutting knife 200 cuts again, the short bottom side of the obtained trapezoidal paper piece is in front and the long bottom side is in the back, as shown in FIG. Figure 8 The "front" and "rear" here are based on the feeding direction of the paper tape conveyor. The arrow direction is "front", and the opposite direction is "rear".
[0033] See also Figure 8 The cutting direction of the second cutting knife 300 forms an angle β with the cutting direction of the first cutting knife 200, and the angle β is equal to the angle α. The trapezoidal paper piece obtained by adopting this structure has two equal bottom angles and two equal waists. The trapezoidal paper piece has a symmetrical structure, which is convenient for paper roll forming, and the qualified rate of the formed product is high.
[0034] Of course, the cutting direction of the second cutting knife 300 can also be other directions, such as the angle β is not equal to the angle α, so that the two waists of the trapezoidal paper piece obtained by cutting are asymmetrical, but the trapezoidal paper piece can also be rolled into shape.
[0035] Alternatively, see Fig. 9 , the cutting direction 301 of the second cutting knife is: along the opposite direction of the feeding, the cutting line gradually deviates from the intersection point of the feeding paper tape to the other side of the feeding paper tape. As the feeding paper tape 100 moves, after the first cutting knife 200 cuts twice, an irregular trapezoid with a large front end and a small rear end is obtained. Fig. 9 shown in the right part of .
[0036] Alternatively, see Fig.10 , the second cutting knife is set on the side where the rear end intersection 111 of the feed paper tape is located (the upper side of the feed paper tape 100 as shown in the figure). The cutting direction 302 of the second cutting knife is: along the opposite direction of feeding, the cutting line gradually deviates from the rear end intersection 111 of the feed paper tape to the other side of the feed paper tape. The hypotenuse obtained after the feed paper tape 100 is cut by the second cutting knife 300 and the other side (lower side) of the feed paper tape form the two waists of the trapezoidal paper piece. As the feed paper tape moves, after the first cutting knife 200 cuts again, the short bottom side of the obtained trapezoidal paper piece is at the back and the long bottom side is at the front, as shown in FIG. Fig.10 shown in the right part of .
[0037] Alternatively, see Fig.11 The second cutting knife is arranged on the side where the rear end intersection 111 of the feed paper tape is located (the upper side of the feed paper tape 100 as shown in the figure). The cutting direction 303 of the second cutting knife is: along the feeding direction, the cutting line gradually deviates from the intersection point of the feed paper tape to the other side of the feed paper tape. The obtained trapezoidal paper piece is as follows Fig.11 shown in the right part of .
[0038] See 3 and 5 again and Fig.12 The second cutting knife 300 is installed on the frame 500, including a sliding cutting knife body 310, one end of which is rotatably connected through a shaft 311, and a telescopic push rod 320 is connected to the sliding cutting knife body 310. The width of the conveying plate section 420 and the pressing block 430 of the paper tape conveying device is less than two-thirds of the width of the feed paper tape 100, and the side of the feed paper tape 100 close to the second cutting knife is suspended. The sliding cutting knife body 310 cooperates with the side of the conveying plate section 420 to perform cutting.
[0039] The working process of the utility model is as follows: Figure 8 For example, when the feed paper tape 100 is transported to the first station, the telescopic push rod 320 of the second cutting knife 300 contracts, driving the sliding cutter body 310 to move downward, cutting the suspended feed paper tape on the conveying plate section 420 to obtain a bevel; the first cutting knife 200 performs cutting; then, when the feed paper tape 100 continues to move to the second station, the first cutting knife 200 performs a second cutting to obtain a pre-designed trapezoidal paper piece.
[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. Paper feeding and cutting mechanism, characterized in that: The invention comprises a paper tape conveying device, a first cutting knife arranged at the front end of the paper tape conveying device, and a second cutting knife arranged at one side of the paper tape conveying device, and meets the following requirements: The conveying direction of the feeding paper tape of the paper tape conveying device and the cutting direction of the first cutting knife form an angle α less than 90 degrees; as the paper tape conveying device conveys the feeding paper tape, the first cutting knife can cut the feeding paper tape into two parallel bottom edges; The cutting direction of the second cutting knife intersects with the corresponding side of the feed paper tape of the paper tape conveying device, so as to cut the feed paper tape on this side into a bevel, and the bevel and the other side of the feed paper tape on the paper tape conveying device form two sides of a trapezoidal paper sheet.
2. The paper feeding and cutting mechanism according to claim 1, characterized in that: The points where the cutting position of the first cutting knife intersects with the two sides of the feed paper tape are the front intersection point and the rear intersection point respectively, and the second cutting knife is arranged on the side where the front intersection point of the feed paper tape is located.
3. The paper feeding and cutting mechanism according to claim 2, characterized in that: The cutting direction of the second cutting knife is along the feeding direction of the paper tape conveying device, and the cutting line of the second cutting knife gradually deviates from the intersection point of the feeding paper tape to the other side of the feeding paper tape.
4. The paper feeding and cutting mechanism according to claim 1, characterized in that: The cutting position of the first cutting knife and the two side boundaries of the feed paper tape determine the front intersection and rear intersection along the conveying direction of the feed paper tape, and the second cutting knife is arranged on the side where the rear end intersection of the feed paper tape is located.
5. The paper feeding and cutting mechanism according to claim 3, characterized in that: The cutting direction of the second cutting knife forms an angle β with the cutting direction of the first cutting knife, and the angle β is equal to the angle α.
6. The paper feeding and cutting mechanism according to claim 1, characterized in that: A conveying plate section and a pressing block are arranged on the paper tape conveying device, and the pressing block is arranged above the conveying plate section, and a paper feeding gap is arranged between the pressing block and the conveying plate section.
7. The paper feeding and cutting mechanism according to claim 6, characterized in that: The widths of the conveying plate section and the pressing block are both smaller than two-thirds of the width of the feeding paper belt, and one side of the feeding paper belt close to the second cutting knife is in a suspended state.
8. The paper feeding and cutting mechanism according to claim 7, characterized in that: The second cutting knife comprises a sliding cutting knife body, one end of which is rotatably connected via a shaft, a telescopic push rod is connected to the sliding cutting knife body, and the sliding cutting knife body cooperates with the side of the conveying plate section for cutting.