A web slitter

Abstract

This invention discloses a roll paper slitting machine, including an air filling / deflating mechanism A located below the lower cutter shaft and an air filling / deflating mechanism B located above the upper cutter shaft. Air filling / deflating mechanism A is driven to move horizontally by a lead screw motor. Air filling / deflating mechanism B and mechanism A are synchronized by an intermittent magnetic positioning device. Air chambers are installed inside the cutter holders of both the lower and upper cutter shafts. Air can be filled or discharged into the air chambers through air filling / deflating mechanisms B and A, thereby locking or releasing the cutter holders. This invention eliminates the need for close contact, allowing for remote electric operation. Each cutter holder can be individually locked or released, making operation more flexible and convenient. Air filling / deflating mechanism B and mechanism A can move synchronously, and the upper and lower circular cutters can be adjusted synchronously. Paper can pass smoothly between the two horizontal plates, and in conjunction with a measuring grating, the paper width can be measured and adjusted promptly.

Description

Technical Field

[0001] This invention relates to the field of printing technology, specifically to a roll paper slitting machine. Background Technology

[0002] In the printing industry, the raw paper rolls purchased are relatively wide rolls, such as the common widths of 1940mm, 1600mm, 1220mm, 1120mm, and 940mm. Before printing, the rolls need to be slit to divide the raw paper rolls into multiple rolls that meet the printing specifications.

[0003] Due to different specifications, roll paper slitting machines often need to adjust the blade spacing when slitting; moreover, the precision requirements are also high, and the corresponding upper and lower blades need to be adjusted synchronously during the adjustment, which is relatively cumbersome and difficult for employees to operate; it is also time-consuming and delays production.

[0004] Therefore, we propose a roll paper slitting machine. Summary of the Invention

[0005] The purpose of this invention is to provide a roll paper slitting machine to solve the problem that the existing roll paper slitting machines in the background art are cumbersome, difficult to operate, and time-consuming when adjusting the blades.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A roll paper slitting machine, comprising:

[0008] A parallel sliding air charging / discharging mechanism A is provided below the lower cutter shaft;

[0009] And the air charging / discharging mechanism B, which is parallel to and slidably positioned above the upper cutter shaft;

[0010] The inflation / deflation mechanism A is driven to translate by a lead screw motor.

[0011] The inflation / deflation mechanism B and the inflation / deflation mechanism A are kept in synchronous movement by an intermittent magnetic positioning device.

[0012] Both the lower and upper cutter shafts have air tanks inside their tool holders. Gas can be injected into or discharged into the air tanks through the air filling and deflating mechanism B and the air filling and deflating mechanism A, thereby locking or loosening the tool holders.

[0013] The tool holder is also equipped with an airtight core mounting plate that can always face upwards or downwards. An airtight core is mounted on the airtight core mounting plate and is connected to the air bag, which can inflate and deflate the air bag.

[0014] Preferably, the aforementioned tool holder includes an outer sleeve and an inner sleeve, with an air pocket formed between the outer sleeve and the inner sleeve. The outer sleeve has an air vent, and the middle part of the inner sleeve is made of rubber, which can deform under the pressure of high-pressure gas to generate a clamping force.

[0015] Preferably, one end of the inner sleeve is fixedly installed on one end of the outer sleeve by bolts, the other end of the inner sleeve is set as a sealing ring, the two ends of the inner sleeve are fixedly connected on the outside by a connecting rod, and a wear-resistant rubber brake sleeve is connected on the inside between the two ends of the inner sleeve.

[0016] Preferably, a sleeve is rotatably mounted on the outer sleeve via two sets of sealed bearings, the vent is located between the two sets of sealed bearings, and the airtight core mounting plate is fixedly connected to the sleeve; and a counterweight I is also fixedly connected to the sleeve on the tool holder of the upper tool shaft.

[0017] Preferably, both the inflation / deflation mechanism A and the inflation / deflation mechanism B described above include a movable block, on which a cylinder is mounted. An inflation plate is mounted at one end of the cylinder, and an inflation port is provided on the inflation plate. A push rod is fixedly connected to the center of the inflation port. The push rod can press against the core rod of the airtight core, thereby realizing deflation. A flexible hose communicating with the inflation port is connected to one side of the inflation plate, and one end of the flexible hose is connected to a pressurized air pump.

[0018] Preferably, the aforementioned intermittent magnetic positioning device includes two horizontal plates arranged opposite each other. The upper horizontal plate is connected to the inflation / deflation mechanism B via a connecting rod, and the lower horizontal plate is connected to the inflation / deflation mechanism A via a connecting rod. Magnets are fixedly connected to the opposite surfaces of the two horizontal plates, and the opposite surfaces of the two magnets have opposite magnetic properties.

[0019] Preferably, a measuring grating for measuring the width of paper is also installed on the opposite surfaces of the two horizontal plates.

[0020] Preferably, the above also includes a trimming device, which includes a slide rod parallel to the upper cutter shaft. A rotating seat is slidably mounted on the slide rod. A connecting rod is fixedly connected to one side of the rotating seat. The connecting rod can rest in a stepped groove on the cutter holder of the upper cutter shaft. A gear ring is provided in the stepped groove. A gear set that meshes with the gear ring is mounted on the connecting rod. A trimming knife is rotatably mounted on one side of the rotating seat through a connecting frame. The gear set is connected to the trimming knife via a belt.

[0021] Preferably, the trimming knife mentioned above includes a pad knife and two symmetrically arranged blades, with the two blades respectively disposed on both sides of the pad knife, and one end of the pad knife is fixedly connected to the bottom of the rotating seat by a round rod.

[0022] Preferably, one end of the aforementioned pad is fixedly connected to an air duct for absorbing waste paper, and one side of the air duct is fixedly connected to an air pipe connector, wherein the airflow direction of the air pipe connector is consistent with the material discharge direction of the air duct.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The present invention employs an inflation / deflation mechanism B and an inflation / deflation mechanism A, which work in conjunction with an air bag on the tool holder. The tool holder can be locked by inflation and pressurization, eliminating the need for bolts to fix the tool holder and eliminating the need for close contact. It can be operated electrically from a distance, and each tool holder can be individually locked or released, making the operation more flexible and convenient.

[0025] 2. The present invention uses an intermittent magnetic positioning device, which enables the inflation / deflation mechanism B and the inflation / deflation mechanism A to move synchronously during adjustment, and the upper and lower circular blades can be adjusted in position synchronously, which is very convenient.

[0026] 3. The present invention uses an intermittent magnetic positioning device, with no direct connection structure between the two horizontal plates (no obstruction), that is, paper can pass smoothly between the two horizontal plates (the paper does not affect the magnetism), and in conjunction with the measuring grating, the width of the paper can be measured and adjusted in time, which is very convenient.

[0027] 4. The present invention has an airtight core mounting plate on the tool holder that can always be aligned with the air filling and defilling mechanism B or the air filling and defilling mechanism A. No matter what angle the upper tool shaft (or lower tool shaft) rotates to, it will not affect the operation, which is very convenient.

[0028] 5. In this invention, when the cylinder of the inflation / deflation mechanism A (or inflation / deflation mechanism B) is lifted and pressed against the airtight core mounting plate (static friction is generated between them), air is then released, and the tool holder is released. Then, the inflation / deflation mechanism A is driven to move by a lead screw motor. At this time, under the action of friction, the tool holder can move synchronously. After moving to the position, gas is injected to lock and position it, and then the cylinder retracts. This achieves the purpose of adjusting the tool holder spacing. Moreover, the above structure is simple, easy to implement, and has low cost.

[0029] 6. The present invention, by adding an edge trimming device, performs edge trimming directly during the slitting process of roll paper, saving the complicated process of trimming after slitting and improving efficiency.

[0030] 7. In this invention, the mounting rod of the trimming device can be directly placed on the tool holder and can use the rotational power of the tool holder as the driving force. No additional motor drive is required. The structure is simple, the cost is low, the space occupied is small, and it can move synchronously with the tool holder and is easy to replace.

[0031] 8. In this invention, during the trimming process, the waste paper strips can be guided away using the air duct, and an airflow can be formed near the trimming knife to simultaneously suck away the dust generated during trimming. It is environmentally friendly, dust-free, and easy to use. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a roll paper slitting machine according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the second base in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the inflation / deflation mechanism A according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the upper and lower circular knives in an embodiment of the present invention;

[0036] Figure 5 This is an exploded structural diagram of the tool holder according to an embodiment of the present invention;

[0037] Figure 6 This is a cross-sectional structural diagram of the tool holder according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the inner sleeve structure according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the slide bar structure according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the trimming device according to an embodiment of the present invention;

[0041] Figure 10 This is a partial structural diagram of the air duct according to an embodiment of the present invention.

[0042] In the picture:

[0043] 100. First base; 101. Lead screw motor; 102. Guide rod I; 103. Lead screw;

[0044] 200. Inflation / deflation mechanism A; 201. Moving block; 202. Threaded hole; 203. Sliding hole; 204. Cylinder; 205. Inflation plate; 206. Inflation port; 207. Push rod; 208. Hose;

[0045] 300. Interval magnetic positioning device; 301. Horizontal plate; 303. Magnet; 304. Measuring grating; 305. Connecting rod;

[0046] 400. Inflation / Deflation Mechanism B; 401. Guide Rod II;

[0047] 500. Second base; 501. Dovetail groove; 502. Screw; 503. Handwheel; 504. Movable seat; 505. Spline sleeve;

[0048] 600. Upper circular cutter; 601. Upper cutter shaft; 602. Small diameter section; 603. Ball bearing; 604. Splined shaft;

[0049] 605, Tool holder; 6051, Inner sleeve; 6052, Outer sleeve; 6053, Vent; 6054, Connecting rod; 6055, Sealing ring; 6056, Rubber brake sleeve; 6057, Sealing ring;

[0050] 606, Sleeve; 6061, Airtight Core Mounting Plate; 6062, Counterweight I; 6063, Airtight Core; 6064, Core Rod; 6065, Sealed Bearing;

[0051] 607. Stepped groove; 608. Gear ring;

[0052] 700. Lower circular cutter; 701. Lower cutter shaft;

[0053] 800. Trimming device; 801. Slide rod; 802. Rotating seat; 803. Support rod; 804. Gear set; 805. Counterweight II; 806. Belt; 807. Pad knife; 808. Trimming knife; 809. Round rod; 810. Air duct; 811. Connecting frame; 812. Air pipe connector. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1

[0056] Please see Figure 1-10 The present invention provides a technical solution:

[0057] A roll paper slitting machine includes an air filling / deflating mechanism A200 slidably disposed below a lower cutter shaft 701 and an air filling / deflating mechanism B400 slidably disposed above an upper cutter shaft 601. The air filling / deflating mechanism A200 is driven to move horizontally by a lead screw motor 101. The air filling / deflating mechanism B400 and the air filling / deflating mechanism A200 move synchronously through an intermittent magnetic positioning device 300. Air chambers are provided inside the cutter holders 605 of both the lower cutter shaft 701 and the upper cutter shaft 601. Gas can be filled or discharged into the air chambers through the air filling / deflating mechanisms B400 and A200, thereby locking or releasing the cutter holders 605. An airtight core mounting plate 6061, which can always face upwards or downwards, is also installed on the cutter holder 605. An airtight core 6063 is installed on the airtight core mounting plate 6061 and communicates with the air chambers, enabling the air chambers to be filled and vented. In implementation, as... Figure 2 As shown, the upper circular cutter 600 is fixedly mounted on the tool holder 605 of the upper cutter shaft 601, and the lower circular cutter 700 is mounted on the tool holder 605 of the lower cutter shaft 701.

[0058] In implementation, such as Figure 1 As shown, the inflation / deflation mechanism A200 is mounted on the guide rod I102 and the lead screw 103, which are mounted between the first base 100 and the second base 500. The inflation / deflation mechanism B400 is slidably mounted on the two guide rods I101. The lead screw 103 is driven by the lead screw motor 101. The lead screw 103 is threadedly connected to the inflation / deflation mechanism A200, while the guide rod I102 is slidably connected to the inflation / deflation mechanism A200.

[0059] More specifically, such as Figure 3 As shown, both the inflation / deflation mechanism A200 and the inflation / deflation mechanism B400 include a movable block 201. A cylinder 204 is mounted on the movable block 201, and an inflation plate 205 is mounted on one end of the cylinder 204. The inflation plate 205 has an inflation port 206, and a push rod 207 is fixedly connected to the center of the inflation port 206. The push rod 207 can press against the core rod 6064 of the airtight core 6063, thereby releasing air. A flexible hose 208 communicating with the inflation port 206 is connected to one side of the inflation plate 205, and one end of the flexible hose 208 is connected to a pressurized air pump. The movable block 201 is provided with a threaded hole 202 that mates with the lead screw 103 and a sliding hole 203 that mates with the guide rod 1102. Note that during implementation, a rubber layer is adhered to the surface of the inflation plate 205 to facilitate sealing inflation and increase friction, and also to provide cushioning and anti-collision.

[0060] In implementation, such as Figure 2As shown, a dovetail groove 501 is provided on the second base 500. A movable seat 504 is slidably mounted on the dovetail groove 501 via a dovetail block. A spline sleeve 505 is installed on one side of the movable seat 504. A screw 502 is threaded onto one end of the dovetail groove 501. One end of the screw 502 has a handwheel 503, and the other end of the screw 502 is rotatably connected to one side of the dovetail block. By rotating the handwheel 503, the movable seat 504 can slide on the second base 500. One end of the two guide rods II 401 is fixedly connected to the first base 100, and the other end slides through the movable seat 504.

[0061] Correspondingly, both the upper cutter shaft 601 and the lower cutter shaft 701 have a narrow diameter section 602. A splined shaft 604 is fitted onto this narrow diameter section 602 via a ball bearing 603 (the ball bearing 603 is fitted onto the narrow diameter section 602, and the splined shaft 604 is fitted onto the ball bearing 603). This splined shaft 604 can be inserted and mated with a splined sleeve 505 on one side of the movable seat 504. This splined fit facilitates the disassembly and replacement of the tool holder 605. It should be noted that the inner diameter of the tool holder 605 is larger than the diameter of the splined shaft 604, which facilitates the disassembly of the tool holder 605.

[0062] like Figure 5 and Figure 6 As shown, the tool holder 605 includes an outer sleeve 6052 and an inner sleeve 6051, with an air pocket formed between the outer sleeve 6052 and the inner sleeve 6051. The outer sleeve 6052 has an air vent 6053, and the middle part of the inner sleeve 6051 is made of rubber, which can deform under the pressure of high-pressure gas to generate a clamping force.

[0063] More specifically, one end of the inner sleeve 6051 is fixedly installed on one end of the outer sleeve 6052 by bolts, and the other end of the inner sleeve 6051 is set as a sealing ring 6055. The end faces of the inner sleeve 6051 and the outer sleeve 6052 that contact each other are provided with sealing rings 6057 to facilitate sealing. The two ends of the inner sleeve 6051 are fixedly connected on the outside by a connecting rod 6054, and a wear-resistant rubber brake sleeve 6056 is connected on the inside between the two ends of the inner sleeve 6051.

[0064] The sleeve 606 is rotatably mounted on the outer sleeve 6052 via two sets of sealed bearings 6065. The vent 6053 is located between the two sets of sealed bearings 6065. The airtight core mounting plate 6061 is fixedly connected to the sleeve 606. Furthermore, a counterweight I6062 is fixedly connected to the sleeve 606 on the tool holder 605 of the upper cutter shaft 601. The weight of the counterweight I6062 is greater than the overall weight of the airtight core mounting plate 6061, which allows the airtight core mounting plate 6061 to always remain facing upward under the action of gravity. The sleeve 606 on the tool holder 605 of the lower cutter shaft 701 does not require this counterweight I6062. Under the weight of the airtight core mounting plate 6061 itself, the airtight core mounting plate 6061 on the tool holder 605 of the lower cutter shaft 701 can always remain facing downward.

[0065] like Figure 1 As shown, the intermittent magnetic positioning device 300 includes two horizontally arranged plates 301. The upper horizontal plate 301 is connected to the inflation / deflation mechanism B400 via a connecting rod 305, and the lower horizontal plate 301 is connected to the inflation / deflation mechanism A200 via a connecting rod 305. Magnets 303 are fixedly connected to the opposing surfaces of the two horizontal plates 301, and the opposing surfaces of the two magnets 303 have opposite magnetic properties. When the horizontal plates 301 only have a horizontal sliding limiting force (and the friction is essentially zero), they can maintain their relative positions under the mutual attraction of magnetic forces and without external interference. When an external force changes the position of one of the horizontal plates 301, the other horizontal plate 301, under the attraction of magnetic forces, can follow and stabilize, and then maintain its relative position.

[0066] During implementation, a measuring grating 304 for measuring paper width is also installed on the opposite surfaces of the two horizontal plates 301. The intermittent magnetic positioning device 300, in conjunction with the measuring grating 304 capable of measuring paper width, does not affect the smooth flow of paper and is more convenient for adjustment at any time.

[0067] It also includes a control center (CPU controller with an operation panel), and the above-mentioned electronic control components, such as the lead screw motor 101, cylinder 204 (which can be replaced by an electric push rod in implementation), and pressurized air pump, are all connected to the control center.

[0068] During use, the control center controls the lead screw motor 101 and accurately records the position of each tool holder (similar to a horizontal coordinate, while the tool holder is a point on the coordinate); due to the high precision of the lead screw 103, it can generally meet the accuracy requirement of 0.1mm.

[0069] These coordinates allow control of the inflation / deflation mechanism A to move to the coordinate point (correspondingly, the inflation / deflation mechanism B moves to another relative coordinate point). Select the tool holder 605 whose position needs adjustment, and control the cylinder 204 to lift (note that both cylinders 204 on inflation / deflation mechanisms A and B work simultaneously). Then, the inflation plate 205 presses against the airtight core mounting plate 6061; the push rod 207 pushes against the core rod 6064 of the airtight core 6063 to release air (at this time, the pressurized air pump does not start; when not started, air can be released in reverse along the hose 208). Release the tool holder. 605; Then, the lead screw motor 101 controls the transfer inflation / deflation mechanism A to move to the required coordinate point (at this time, since the inflation plate 205 is still against the airtight core mounting plate 6061, it can drive the entire tool holder 605 to move under the action of static friction. Due to the interval magnetic positioning device 300, the inflation / deflation mechanism B can follow). Then, the pressurizing air pump is started to inflate the inside of the tool holder 605, and the tool holder 605 is locked. The adjustment is completed. The whole operation process only requires selecting the tool holder 605 to be moved and determining the specific position to be moved to, which is very convenient.

[0070] Example 2

[0071] In the printing industry, paper trimming machines play a crucial role. The appearance quality of printed materials is directly affected by the quality of the raw paper. If the edges of the raw paper are not trimmed, quality problems such as wrinkles, burrs, and even paper jams will occur during the printing process, leading to a decline in the quality of the printed materials. Therefore, paper trimming machines are an indispensable process in printing. Some specialized industries, such as the production of craft gifts, cards, and books, also require paper trimming machines. These products need to exhibit a high-end feel and aesthetic appeal, and paper trimming machines can smooth out rough edges, making the products more visually appealing.

[0072] Traditional roll paper slitting machines use circular blades that require a large workload and high speed, and are not easy to replace and maintain. Therefore, they are durable, but not very sharp. The edges of the slitting paper will have burrs and will not be smooth. Generally, the slitting paper needs to be trimmed in subsequent processes before it can be printed.

[0073] Unlike Example 1, in this example, as Figure 8-10As shown, a trimming device 800 is also added. The trimming device 800 includes a slide rod 801 parallel to the upper cutter shaft 601. A rotating seat 802 is slidably mounted on the slide rod 801. A support rod 803 is fixedly connected to one side of the rotating seat 802. The support rod 803 can rest in a stepped groove 607 on the cutter holder 605 of the upper cutter shaft 601. A gear ring 608 is provided in the stepped groove 607. A gear set 804 meshing with the gear ring 608 is mounted on the support rod 803. A trimming blade 808 is rotatably mounted on one side of the rotating seat 802 via a connecting bracket 811. The gear set 804 is connected to the trimming blade 808 via a belt 806. In implementation, a counterweight II 805 is also provided at one end of the support rod 803 to increase the weight of the support rod 803 and prevent it from easily fluctuating at excessive speeds.

[0074] Specifically, such as Figure 9 As shown, the trimming knife 808 includes a pad knife 807 and two symmetrically arranged blades. The two blades are respectively located on both sides of the pad knife 807, and one end of the pad knife 807 is fixedly connected to the bottom of the rotating base 802 by a round rod 809. With the two blades, the edges of the paper on both sides of the slit can be trimmed simultaneously, which is very convenient.

[0075] And in implementation, such as Figure 9 and Figure 10 As shown, one end of the pad knife 807 is fixedly connected to an air duct 810 for sucking up waste paper, and one side of the air duct 810 is fixedly connected to an air pipe connector 812. The airflow direction of the air pipe connector 812 is consistent with the discharge direction of the air duct 810. The air pipe connector 812 can be directly connected to an air pump or compressed air pipeline to guide waste paper and dust through airflow.

[0076] By adding a trimming device 800, trimming can be performed directly during the slitting process of roll paper, saving the complicated step of trimming after slitting and improving efficiency.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roll paper slitting machine, characterized in that, include: A gas charging / discharging mechanism A (200) is slidably disposed below the lower cutter shaft (701); The air filling and defilling mechanism B (400) is parallel to and slidably disposed above the upper cutter shaft (601); The inflation / deflation mechanism A (200) is driven to translate by a lead screw motor (101); The inflation / deflation mechanism B (400) and the inflation / deflation mechanism A (200) move synchronously through an intermittent magnetic positioning device (300); Both the lower cutter shaft (701) and the upper cutter shaft (601) have air tanks in their tool holders (605). Gas can be filled or discharged into the air tanks through the air filling and emptying mechanism B (400) and the air filling and emptying mechanism A (200), thereby locking or releasing the tool holders (605). The blade holder (605) is also equipped with an airtight core mounting plate (6061) that can always face upwards or downwards. An airtight core (6063) is mounted on the airtight core mounting plate (6061). The airtight core (6063) is connected to the air bag and can inflate and de-inflate the air bag.

2. The roll paper slitting machine according to claim 1, characterized in that: The blade holder (605) includes an outer sleeve (6052) and an inner sleeve (6051), with an air pocket formed between the outer sleeve (6052) and the inner sleeve (6051). The outer sleeve (6052) has an air vent (6053), and the middle part of the inner sleeve (6051) is made of rubber, which can deform under the pressure of high-pressure gas to generate a clamping force.

3. A roll paper slitting machine according to claim 2, characterized in that: One end of the inner sleeve (6051) is fixedly installed on one end of the outer sleeve (6052) by bolts. The other end of the inner sleeve (6051) is set as a sealing ring (6055). The outer sides of the two ends of the inner sleeve (6051) are fixedly connected by a connecting rod (6054). A wear-resistant rubber brake sleeve (6056) is connected to the inner side of the two ends of the inner sleeve (6051).

4. A roll paper slitting machine according to claim 3, characterized in that: A sleeve (606) is rotatably mounted on the outer sleeve (6052) via two sets of sealed bearings (6065). The vent (6053) is located between the two sets of sealed bearings (6065). The airtight core mounting plate (6061) is fixedly connected to the sleeve (606). A counterweight I (6062) is also fixedly connected to the sleeve (606) on the tool holder (605) of the upper cutter shaft (601).

5. A roll paper slitting machine according to claim 4, characterized in that: Both the inflation / deflation mechanism A (200) and the inflation / deflation mechanism B (400) include a movable block (201). A cylinder (204) is installed on the movable block (201). An inflation plate (205) is installed at one end of the cylinder (204). An inflation port (206) is opened on the inflation plate (205), and a push rod (207) is fixedly connected to the center of the inflation port (206). The push rod (207) can press the core rod (6064) of the airtight core (6063) to release air. A hose (208) communicating with the inflation port (206) is connected to one side of the inflation plate (205). One end of the hose (208) is connected to a pressurized air pump.

6. A roll paper slitting machine according to any one of claims 1-5, characterized in that: The interval magnetic positioning device (300) includes two horizontal plates (301) arranged opposite to each other. The upper horizontal plate (301) is connected to the inflation / deflation mechanism B (400) via a connecting rod (305), and the lower horizontal plate (301) is connected to the inflation / deflation mechanism A (200) via a connecting rod (305). Magnets (303) are fixedly connected to the opposite surfaces of the two horizontal plates (301), and the opposite surfaces of the two magnets (303) have different magnetic properties.

7. A roll paper slitting machine according to claim 6, characterized in that: Measuring gratings (304) for measuring paper width are also installed on the opposite surfaces of the two horizontal plates (301).

8. A roll paper slitting machine according to claim 1, characterized in that: It also includes a trimming device (800), which includes a slide rod (801) parallel to the upper cutter shaft (601). A rotating seat (802) is slidably mounted on the slide rod (801). A connecting rod (803) is fixedly connected to one side of the rotating seat (802). The connecting rod (803) can rest in the stepped groove (607) on the cutter holder (605) of the upper cutter shaft (601). A gear ring (608) is provided in the stepped groove (607). A gear set (804) meshing with the gear ring (608) is mounted on the connecting rod (803). A trimming knife (808) is rotatably mounted on one side of the rotating seat (802) through a connecting frame (811). The gear set (804) is connected to the trimming knife (808) through a belt (806).

9. A roll paper slitting machine according to claim 8, characterized in that: The trimming knife (808) includes a pad knife (807) and two symmetrically arranged blades. The two blades are respectively arranged on both sides of the pad knife (807). One end of the pad knife (807) is fixedly connected to the bottom of the rotating seat (802) by a round rod (809).

10. A roll paper slitting machine according to claim 9, characterized in that: One end of the pad knife (807) is fixedly connected to an air duct (810) for absorbing waste paper material, and one side of the air duct (810) is fixedly connected to an air pipe connector (812). The airflow direction of the air pipe connector (812) is consistent with the discharge direction of the air duct (810).

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