Roll paper slitting mechanism capable of adjusting cutting distance

Abstract

The utility model discloses a roll paper slitting mechanism capable of adjusting cutting spacing, which comprises a slitting machine long side plate, a slitting machine bottom plate is fixedly arranged on one side below the slitting machine long side plate, and a slitting machine short side plate is fixedly arranged at one end of the slitting machine bottom plate; the first blade mounting ring buckle and the second blade mounting ring buckle are located on the two sides of the rotary blade component, the blade limiting clamping block is aligned with the blade limiting clamping groove to be embedded and installed in a butt joint mode, and the blade mounting through hole can be fixed by penetrating the fixing bolt into the blade mounting through hole. Then, an insertion hole in a ring opening in the cutting blade part is aligned with the cutting roller body, an insertion limiting groove is aligned with a limiting strip for insertion until an adjusting threaded rod is embedded into an adjusting screw hole, and at the moment, the installation position of the cutting blade part on the cutting roller part can be adjusted by rotating the adjusting threaded rod; and the cutting blade parts can be sequentially installed and adjusted at equal intervals, so that the cutting distance and the cutting number can be conveniently and rapidly adjusted and controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of slitting machine equipment, in particular to a web slitting mechanism with adjustable cutting spacing. Background Art

[0002] A double-revolution high-speed web slitting machine is a device used to cut a large web into smaller-width paper rolls. It is mainly used in industries such as paper, wrapping paper, and label paper. During operation, the web slitting machine processes the large roll of paper through a series of processes such as cutting, slitting, and compressing, and finally obtains paper rolls of the required specifications; however, currently, the existing double-revolution high-speed web slitting machine cannot conveniently and quickly adjust and control the number of cutting spacings during use, so it is relatively inconvenient to use during the slitting work. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a web slitting mechanism with adjustable cutting spacing to solve the problem that the existing double-revolution high-speed web slitting machine cannot conveniently and quickly adjust and control the number of cutting spacings during use, so it is relatively inconvenient to use during the slitting work.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A web slitting mechanism with adjustable cutting spacing, comprising: a long side plate of the slitting machine, a bottom plate of the slitting machine is fixedly arranged on one side below the long side plate of the slitting machine, a short side plate of the slitting machine is fixedly arranged at one end of the bottom plate of the slitting machine, a first motor mounting plate is fixedly arranged below one end inside the long side plate of the slitting machine, a driving servo motor is fixedly arranged at one end above the first motor mounting plate, a driving roller assembly is rotatably connected above one end inside the long side plate of the slitting machine, a cutter assembly is rotatably connected above one end inside the long side plate of the slitting machine close to the driving roller assembly, a pressing assembly is arranged through the long side plate of the slitting machine below one end inside the long side plate of the slitting machine close to the driving roller assembly, an arc-shaped groove is opened at one end inside the long side plate of the slitting machine, a second motor mounting plate is fixedly arranged above one end outside the long side plate of the slitting machine, a swinging servo motor is fixedly arranged below the second motor mounting plate, the output end of the first motor mounting plate penetrates through the long side plate of the slitting machine and is fixedly provided with a main driving rotating shaft, and a motor belt pulley is arranged at one end outside the main driving rotating shaft.

[0005] As a further scheme of the utility model: One end of the driving roller assembly includes a driving roller adapter shaft fixedly provided with a driving roller ring plate, one end of the driving roller ring plate is fixedly provided with a driving roller body, an inner driving belt pulley is sleeved inside the other end of the driving roller adapter shaft, and an outer driving belt pulley is sleeved outside the other end of the driving roller adapter shaft.

[0006] As a further solution of the present utility model: The cutter assembly includes a cutting roller component, one end of the cutting roller component is provided with a cutting blade component, and the number of the cutting blade components is set to be multiple groups.

[0007] As a further solution of the present utility model: The cutting roller component includes a cutting adapter shaft, one end of the cutting adapter shaft is fixedly provided with a cutting ring plate, one end side of the cutting ring plate is rotatably connected with an adjusting threaded rod, the middle of one end of the cutting ring plate is fixedly provided with a cutting roller body, a limiting strip is fixedly arranged on the outer side of the cutting roller body, a cutting belt pulley is sleeved on the other end of the cutting adapter shaft, the cutting blade component includes a revolving blade component, one side of the revolving blade component is provided with a blade mounting ring buckle one, and the other side of the revolving blade component is provided with a blade mounting ring buckle two.

[0008] As a further solution of the present utility model: The revolving blade component includes a revolving blade body, a blade inner clamping ring is embedded in the middle of the revolving blade body, a blade limiting card slot is opened on the inner side of the blade inner clamping ring, and a small through-hole clamping ring is embedded on one side of the inside of the revolving blade body.

[0009] As a further solution of the present utility model: The blade mounting ring buckle one includes a mounting ring buckle body, a ring mouth inner insertion hole is opened on the inner side of the mounting ring buckle body, a plugging limiting groove is opened on the inner surface of the ring mouth inner insertion hole, a blade limiting block is fixedly arranged at one end of the inner side of the mounting ring buckle body, a blade mounting through-hole is opened in the blade limiting block, an adjusting screw hole seat is fixedly arranged at one end of the outer side of the mounting ring buckle body, a small through-hole embedding groove is opened at one end of the inner side of the adjusting screw hole seat, and an adjusting screw hole is opened through the inside of the small through-hole embedding groove.

[0010] As a further solution of the present utility model: The pressing component includes a swinging connecting rod, one end of the swinging connecting rod is fixedly provided with a swinging connecting arm, the other end of the swinging connecting rod is fixedly provided with a cutting pressing roller, and a cutting annular inclined groove is opened on the outer side of the cutting pressing roller, and the number of the cutting annular inclined grooves is set to be multiple groups.

[0011] As a further solution of the present utility model: One end below the middle of the inner side of the long side plate of the slitter is rotatably connected with a cutting lower guide roller, one end above the middle of the inner side of the long side plate of the slitter is rotatably connected with a cutting upper guide roller, and the cutting lower guide roller is closer to the cutter assembly than the cutting upper guide roller.

[0012] As a further solution of the present utility model: One end above the other side of the inner side of the long side plate of the slitter is rotatably connected with an inlet paper tensioning upper guide roller, one end below the other side of the inner side of the long side plate of the slitter is rotatably connected with a tensioning lower guide roller, the number of the inlet paper tensioning upper guide rollers is set to be two groups, and an isosceles triangle structure is formed between the two groups of inlet paper tensioning upper guide rollers and the tensioning lower guide roller.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, by arranging the blade mounting loop one and the blade mounting loop two on both sides of the rotary blade component and aligning the blade limit block with the blade limit slot for embedded butt joint installation, and then passing a fixing bolt through the blade mounting through hole to fix it. Then, align the inner jacking hole in the loop of the cutting blade component with the cutting roller body, insert the insertion limit slot into the limit strip until the adjusting threaded rod is embedded in the adjusting screw hole. At this time, by rotating the adjusting threaded rod, the installation position of the cutting blade component on the cutting roller component can be adjusted, and the cutting blade components can be installed and adjusted equidistantly in sequence, so as to conveniently and quickly adjust and control the cutting distance and quantity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0016] Figure 2 is the internal structural schematic diagram of the cross-section of a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0017] Figure 3 is the back structural schematic diagram of a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0018] Figure 4 is the structural schematic diagram of the driving roller assembly in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0019] Figure 5 is the structural schematic diagram of the cutter assembly in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0020] Figure 6 is the structural schematic diagram of the cutting roller component in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0021] Figure 7 is the structural schematic diagram of the cutting blade component in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0022] Figure 8 is the structural schematic diagram of the rotary blade component in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0023] Figure 9 is the structural schematic diagram of the blade mounting loop one in a roll paper slitting mechanism with adjustable cutting spacing according to the present utility model;

[0024] Figure 10 It is a schematic structural diagram of the pressing component in a web slitting mechanism with adjustable cutting spacing according to the present utility model.

[0025] In the figure: 1. Long side plate of the slitter; 2. Bottom plate of the slitter; 3. Short side plate of the slitter; 4. First motor mounting plate; 5. Driving servo motor; 6. Driving roller assembly; 7. Cutter assembly; 8. Pressing component; 9. Arc groove; 10. Second motor mounting plate; 11. Oscillating servo motor; 12. Main driving rotating shaft; 13. Motor belt pulley; 14. Lower guiding roller for cutting; 15. Upper guiding roller for cutting; 16. Upper guiding roller for paper feeding tensioning; 17. Lower tensioning roller; 60. Driving roller adapter shaft; 61. Driving roller ring plate; 62. Driving roller body; 63. Inner driving belt pulley; 64. Outer driving belt pulley; 70. Cutting roller component; 71. Cutting blade component; 701. Cutting adapter shaft; 702. Cutting ring plate; 703. Adjusting threaded rod; 704. Cutting roller body; 705. Limiting strip; 706. Cutting belt pulley; 707. Rotary blade component; 708. First blade mounting ring buckle; 709. Second blade mounting ring buckle; 7001. Rotary blade body; 7002. Inner blade clamping ring; 7003. Blade limiting slot; 7004. Small through-hole clamping ring; 7005. Mounting ring buckle body; 7006. Inner socket of the ring opening; 7007. Insertion limiting slot; 7008. Blade limiting block; 7009. Blade mounting through-hole; 7010. Adjusting screw hole seat; 7011. Small through-hole groove; 7012. Adjusting screw hole; 80. Oscillating connecting rod; 81. Oscillating connecting arm; 82. Cutting and pressing roller; 83. Cutting annular inclined groove. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The following will describe the embodiments according to the overall structure of the present utility model.

[0028] Referring to Figures 1 to 3 , in an embodiment of the present utility model, a web slitting mechanism with adjustable cutting spacing includes: a long side plate 1 of the slitter, a bottom plate 2 of the slitter is fixedly arranged on one side below the long side plate 1 of the slitter, a short side plate 3 of the slitter is fixedly arranged at one end of the bottom plate 2 of the slitter, a first motor mounting plate 4 is fixedly arranged below one end inside the long side plate 1 of the slitter, a driving servo motor 5 is fixedly arranged at one end above the first motor mounting plate 4, a driving roller assembly 6 is rotatably connected above one end inside the long side plate 1 of the slitter, a cutter assembly 7 is rotatably connected above one end inside the long side plate 1 of the slitter near the driving roller assembly 6, a pressing assembly 8 is arranged through the long side plate 1 of the slitter below one end inside the long side plate 1 of the slitter near the driving roller assembly 6, an arc-shaped groove 9 is opened at one end inside the long side plate 1 of the slitter, a second motor mounting plate 10 is fixedly arranged above one end outside the long side plate 1 of the slitter, a swinging servo motor 11 is fixedly arranged below the second motor mounting plate 10, a main driving rotating shaft 12 is fixedly arranged through the long side plate 1 of the slitter at the output end of the first motor mounting plate 4, a motor belt pulley 13 is arranged at one end outside the main driving rotating shaft 12, a lower cutting guide roller 14 is rotatably connected below one end in the middle inside the long side plate 1 of the slitter, an upper cutting guide roller 15 is rotatably connected above one end in the middle inside the long side plate 1 of the slitter, the lower cutting guide roller 14 is closer to the cutter assembly 7 than the upper cutting guide roller 15, an upper feeding tensioning guide roller 16 is rotatably connected above the other end inside the long side plate 1 of the slitter, a tensioning lower guide roller 17 is rotatably connected below the other end inside the long side plate 1 of the slitter, the number of the upper feeding tensioning guide rollers 16 is set to two groups, and an isosceles triangle structure is formed between the two groups of upper feeding tensioning guide rollers 16 and the tensioning lower guide roller 17.

[0029] Referring toFigure 4 The driving roller assembly 6 includes a driving roller adapter shaft 60 with a driving roller ring plate 61 fixedly disposed at one end, a driving roller body 62 fixedly disposed at one end of the driving roller ring plate 61, an inner driving pulley 63 is sleeved on the inner side of the other end of the driving roller adapter shaft 60, and an outer driving pulley 64 is sleeved on the outer side of the other end of the driving roller adapter shaft 60.

[0030] Reference Figure 5 The cutter assembly 7 includes a cutting roller component 70, one end of which is provided with a cutting blade component 71, and the number of the cutting blade components 71 is provided in multiple groups.

[0031] Reference Figures 6 to 7 The cutting roller component 70 includes a cutting adapter shaft 701, a cutting ring plate 702 is fixedly provided at one end of the cutting adapter shaft 701, an adjusting threaded rod 703 is connected to the side of one end of the cutting ring plate 702, a cutting roller body 704 is fixedly provided in the middle of one end of the cutting ring plate 702, a limiting strip 705 is fixedly provided on the outer side of the cutting roller body 704, a cutting pulley 706 is sleeved on the other end of the cutting adapter shaft 701, and the cutting blade component 71 includes a rotating blade component 707, a blade mounting buckle 1 708 is provided on one side of the rotating blade component 707, and a blade mounting buckle 2 709 is provided on the other side of the rotating blade component 707.

[0032] Reference Figures 8 to 9 The rotary blade component 707 includes a rotary blade body 7001, a blade inner clamping ring 7002 is embedded in the middle of the rotary blade body 7001, a blade limiting clamping groove 7003 is opened on the inner side of the blade inner clamping ring 7002, a small through-hole clamping ring 7004 is embedded on one side of the rotary blade body 7001, and a blade mounting ring buckle 708 includes a mounting ring buckle body 7005, and a ring mouth inner plug hole 7006 is opened on the inner side of the mounting ring buckle body 7005. A plug-in limit groove 7007 is provided on the inner surface of 006, a blade limit block 7008 is fixedly provided at one end of the inner side of the mounting ring body 7005, a blade mounting through hole 7009 is provided inside the blade limit block 7008, an adjustment screw hole seat 7010 is fixedly provided at one end of the outer side of the mounting ring body 7005, a small through hole embedding groove 7011 is provided at one end of the inner side of the adjustment screw hole seat 7010, and an adjustment screw hole 7012 is provided through the small through hole embedding groove 7011.

[0033] Adopt the above solution: By placing the blade mounting ring buckle one 708 and the blade mounting ring buckle two 709 on both sides of the rotary blade component 707 and aligning the blade limit block 7008 with the blade limit slot 7003 for embedding and docking installation, a fixing bolt can be passed through the blade mounting through hole 7009 to fix it. Then, align the ring socket inner insertion hole 7006 in the cutting blade component 71 with the cutting roller body 704, insert the insertion limit slot 7007 into the limit strip 705, and until the adjusting threaded rod 703 is embedded in the adjusting screw hole 7012, the tool installation can be completed.

[0034] Refer to Figure 10 , the pressing component 8 includes a swinging connecting rod 80. One end of the swinging connecting rod 80 is fixedly provided with a swinging connecting arm 81, and the other end of the swinging connecting rod 80 is fixedly provided with a cutting pressing roller 82. A cutting annular inclined groove 83 is opened on the outer side of the cutting pressing roller 82, and a plurality of groups of the cutting annular inclined grooves 83 are opened.

[0035] Adopt the above solution: The swinging servo motor 11 drives the swinging connecting arm 81 to rotate through the output end, thereby driving the whole pressing component 8 to swing, and lifting the cutting pressing roller 82 to fit the paper to the cutter component 7 above can achieve the slitting work.

[0036] The working principle of the present utility model is as follows: When in use, first place the blade mounting ring buckle one 708 and the blade mounting ring buckle two 709 on both sides of the rotary blade component 707, and align the blade limit block 7008 with the blade limit slot 7003 for embedding and docking installation. Pass a fixing bolt through the blade mounting through hole 7009 to fix it. Then, align the loop socket inner hole 7006 in the cutting blade component 71 with the cutting roller body 704, insert the insertion limit slot 7007 into the limit strip 705 until the adjusting screw rod 703 is embedded in the adjusting screw hole 7012. At this time, by rotating the adjusting screw rod 703, the installation position of the cutting blade component 71 on the cutting roller component 70 can be adjusted, and the cutting blade components 71 can be installed at equal intervals in sequence, so as to conveniently and quickly adjust and control the cutting distance and quantity. During cutting, first pull the roll paper out from the roll, pass it over the outermost paper feeding tension upper guide roller 16 from above, then pass it under the tension lower guide roller 17 in the west from below, then pass it over the inner paper feeding tension upper guide roller 16 from above, pull it towards the cutting upper guide roller 15 and pass over it from above, then pass the paper under the cutting lower guide roller 14, then pull it horizontally through between the cutter assembly 7 and the pressing assembly 8 and pass under the driving roller assembly 6. During cutting, a driving belt is sleeved outside the motor pulley 13 and the outer driving pulley 64, and a driving belt is sleeved outside the inner driving pulley 63 and the cutting pulley 706. In this way, the driving roller assembly 6 and the cutter assembly 7 can be driven to rotate by the motor mounting plate one 4. At this time, the swing servo motor 11 drives the swing connecting arm 81 to rotate through the output end, thereby driving the entire pressing assembly 8 to swing, and lifting the cutting and pressing roller 82 to make the paper fit the cutter assembly 7 above, so as to realize the slitting work.

[0037] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes should be covered within the protection scope of the present utility model.

Claims

1. A web slitting mechanism with adjustable cutting spacing, characterized in that: include: A slitting machine long side plate (1), a slitting machine bottom plate (2) is fixedly arranged on one side below the slitting machine long side plate (1), a slitting machine short side plate (3) is fixedly arranged on one end of the slitting machine bottom plate (2), a motor mounting plate (4) is fixedly arranged below one end of the inner side of the slitting machine long side plate (1), a driving servo motor (5) is fixedly arranged on one end above the motor mounting plate (4), a driving roller assembly (6) is connected to the upper end of the inner side of the slitting machine long side plate (1), and a cutting knife assembly (7) is connected to the upper end of the inner side of the slitting machine long side plate (1) close to the driving roller assembly (6) A pressing assembly (8) is provided below one end of the inner side of the long side plate (1) of the slitting machine near the driving roller assembly (6); an arc groove (9) is provided at one end inside the long side plate (1) of the slitting machine; a motor mounting plate 2 (10) is fixedly provided above one end of the outer side of the long side plate (1) of the slitting machine; a swing servo motor (11) is fixedly provided below the motor mounting plate 2 (10); a main driving shaft (12) is fixedly provided at the output end of the motor mounting plate 1 (4) passing through the long side plate (1) of the slitting machine; a motor pulley (13) is provided at one end of the outer side of the main driving shaft (12).

2. A roll paper slitting mechanism with adjustable cutting distance according to claim 1, characterized in that: The driving roller assembly (6) comprises a driving roller adapter shaft (60) having a driving roller ring plate (61) fixedly disposed at one end thereof, a driving roller body (62) fixedly disposed at one end thereof, an inner driving pulley (63) sleeved on the inner side of the other end of the driving roller adapter shaft (60), and an outer driving pulley (64) sleeved on the outer side of the other end of the driving roller adapter shaft (60).

3. The roll paper slitting mechanism with adjustable cutting distance according to claim 1, characterized in that: The cutter assembly (7) comprises a cutting roller component (70), one end of which is provided with a cutting blade component (71), and the cutting blade components (71) are provided in multiple groups.

4. The roll paper slitting mechanism with adjustable cutting distance according to claim 3, characterized in that: The cutting roller component (70) comprises a cutting adapter shaft (701), a cutting ring plate (702) is fixedly arranged at one end of the cutting adapter shaft (701), an adjusting threaded rod (703) is laterally connected to one end of the cutting ring plate (702), a cutting roller body (704) is fixedly arranged in the middle of one end of the cutting ring plate (702), a limiting strip (705) is fixedly arranged on the outer side of the cutting roller body (704), a cutting pulley (706) is sleeved on the other end of the cutting adapter shaft (701), and the cutting blade component (71) comprises a revolving blade component (707), a blade mounting ring buckle 1 (708) is arranged on one side of the revolving blade component (707), and a blade mounting ring buckle 2 (709) is arranged on the other side of the revolving blade component (707).

5. The roll paper slitting mechanism with adjustable cutting distance according to claim 4, characterized in that: The revolving blade component (707) comprises a revolving blade body (7001), a blade inner retaining ring (7002) is embedded in the middle of the revolving blade body (7001), a blade limiting retaining groove (7003) is provided on the inner side of the blade inner retaining ring (7002), and a small through-hole retaining ring (7004) is embedded on one side of the revolving blade body (7001).

6. The roll paper slitting mechanism with adjustable cutting distance according to claim 4, characterized in that: The blade mounting ring buckle 1 (708) comprises a mounting ring buckle body (7005), the inner side of the mounting ring buckle body (7005) is provided with a ring mouth inner plug hole (7006), the inner surface of the ring mouth inner plug hole (7006) is provided with a plug-in limit groove (7007), one end of the inner side of the mounting ring buckle body (7005) is fixedly provided with a blade limit clamping block (7008), the inside of the blade limit clamping block (7008) is provided with a blade mounting through hole (7009), one end of the outer side of the mounting ring buckle body (7005) is fixedly provided with an adjustment screw hole seat (7010), one end of the inner side of the adjustment screw hole seat (7010) is provided with a small through hole embedding groove (7011), and the inside of the small through hole embedding groove (7011) is provided with an adjustment screw hole (7012) extending therethrough.

7. The roll paper slitting mechanism with adjustable cutting distance according to claim 1, characterized in that: The pressing assembly (8) comprises a swing connecting rod (80), one end of which is fixedly provided with a swing connecting arm (81), and the other end of which is fixedly provided with a cutting pressing roller (82), the outer side of which is provided with a cutting annular bevel groove (83), and the number of the cutting annular bevel grooves (83) is multiple.

8. The roll paper slitting mechanism with adjustable cutting distance according to claim 1, characterized in that: A lower cutting guide roller (14) is connected to one end below the middle of the inner side of the long side plate (1) of the slitting machine, and an upper cutting guide roller (15) is connected to one end above the middle of the inner side of the long side plate (1) of the slitting machine. The lower cutting guide roller (14) is closer to the cutting knife assembly (7) than the upper cutting guide roller (15).

9. The roll paper slitting mechanism with adjustable cutting distance according to claim 1, characterized in that: An upper paper-feeding paper tightening guide roller (16) is connected to the upper side of the other inner end of the long side plate (1) of the slitting machine, and a lower tensioning guide roller (17) is connected to the lower side of the other inner end of the long side plate (1) of the slitting machine. Two groups of the upper paper-feeding paper tightening guide rollers (16) are provided, and an isosceles triangle structure is formed between the two groups of the upper paper-feeding paper tightening guide rollers (16) and the lower tensioning guide rollers (17).

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