A tissue slitting machine with quick-change blades

Abstract

This utility model discloses a tissue slitting machine with quick-change blades, including a cutter, a frame, a blade mounting bracket, and a vertical motion drive mechanism. The blade mounting bracket includes a fixed plate, positioning components, a pressure plate, and connecting fasteners. The fixed plate is fixedly connected to the vertical motion drive mechanism. Multiple positioning components are spaced apart on the fixed plate along its lateral direction and protrude from the mounting surface. The cutter handle has multiple through holes extending along its thickness direction. The size of the positioning components matches the size of the through holes and can be inserted into the corresponding through holes. The pressure plate is arranged opposite to the fixed plate to press the blade handle firmly against the fixed plate. The pressure plate has clearance holes to avoid the positioning components. The connecting fasteners allow for detachable connection between the pressure plate and the fixed plate. This tissue slitting machine with quick-change blades enables quick, easy, and reliable installation and removal of the cutter, significantly improving the maintenance efficiency and overall operating efficiency of the tissue slitting machine.

Description

Technical Field

[0001] This utility model relates to the field of tissue paper slitting machine technology, specifically to a tissue paper slitting machine with quick-change blades. Background Technology

[0002] Paper towels, especially wet wipes, are mostly made of non-woven fabric. Slitting is a key process in the manufacturing of non-woven fabrics, used to cut wide strips of non-woven material into specific widths according to product requirements. A slitting machine that performs this process typically includes a frame, a guide roller system, and the core cutting section. The cutting section usually consists of the cutter blade, a drive mechanism that drives the blade's up-and-down cutting motion, and a blade mounting bracket.

[0003] As the component that directly performs the cutting function, the cutting edge of the blade is easily worn and dulled after prolonged and high-intensity slitting operations, leading to a decrease in cutting quality (such as burrs and incomplete cuts) and an increase in energy consumption. To ensure production efficiency and product quality, the dulled blade needs to be frequently replaced, sharpened, or replaced. However, the common blade mounting methods in existing technologies, especially the methods used to fix the blade holder to the mounting bracket, have significant drawbacks.

[0004] Currently, most tissue paper slitting machines use bolts to directly fix the cutters. Specifically, threaded holes are made in the cutter mounting bracket, and corresponding through holes are made in the cutter handle. Multiple bolts (usually at least four or more) are passed through the through holes in the handle and screwed into the threaded holes in the mounting bracket, firmly pressing the handle to the mounting surface. While this fixing method is secure and reliable, changing the cutter is extremely cumbersome: operators need to use tools (such as wrenches) to loosen and remove all the fixing bolts one by one, remove the old cutter, place the new cutter and precisely align all the holes, and then tighten all the bolts one by one. The entire process is time-consuming, especially on production lines where cutters need frequent changes, severely impacting equipment operating efficiency and capacity. Furthermore, bolts may experience stripping or corrosion after long-term use, further increasing the difficulty of disassembly and replacement time. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a tissue slitting machine with quick blade replacement, which can realize the quick, simple and reliable installation and disassembly of the cutter, so as to significantly improve the maintenance efficiency and overall operating efficiency of the tissue slitting machine.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a tissue paper slitting machine with quick-change blades, comprising a cutter, a frame, a blade mounting bracket, and a vertical motion drive mechanism. The blade mounting bracket is mounted on the frame for mounting the cutter, and the vertical motion drive mechanism is connected to the blade mounting bracket for driving the cutter to perform cutting. The blade mounting bracket comprises:

[0007] A fixed plate is fixedly connected to the up-down motion drive mechanism, and the outer side of the fixed plate is a mounting surface;

[0008] The positioning components are arranged at intervals along the lateral direction of the fixing plate and protrude from the mounting surface. The handle of the cutter has multiple through holes that extend along the thickness direction. The size of the positioning components is adapted to the size of the through holes and can be inserted into the corresponding through holes.

[0009] A pressure plate, disposed opposite to the fixing plate, is used to press the tool holder tightly against the fixing plate. The pressure plate has clearance holes to avoid the positioning assembly.

[0010] A connecting fastener is used to detachably connect the pressure plate and the fixing plate.

[0011] Furthermore, the positioning component includes multiple positioning plates and a closing drive mechanism. There are multiple positioning plates, which are circumferentially spaced on the closing drive mechanism. The closing drive mechanism can drive the multiple positioning plates to simultaneously retract or expand radially.

[0012] Furthermore, the closing drive mechanism includes a fixed disk, a drive disk, and a rotational power source. The fixed disk is fixed to the fixed plate. The fixed disk has multiple guide grooves spaced circumferentially and extending radially therefrom. Each positioning plate is provided with a plug rod, which can be slidably inserted into the guide groove. The drive disk is coaxial with the fixed disk and can be rotated. The drive disk has multiple involute grooves spaced circumferentially, which correspond one-to-one with the guide grooves. Each plug rod is fixed with a slider, which can be slidably engaged with the involute groove. When the drive disk rotates, the slider can slide along the involute groove. The rotational power source is used to start the rotation of the drive disk.

[0013] Furthermore, the rotary power source includes a drive rack, a handle, a drive gear, and a locking element. The drive rack is laterally arranged on the fixed plate and can slide laterally. Each drive disk has a drive gear fixed coaxially, and all the drive gears mesh with the drive rack simultaneously. The handle is fixed on the drive rack and is used to drive the drive rack to move laterally and repeatedly. The locking element is arranged on the drive rack and is used to fix the drive rack to the fixed plate.

[0014] Furthermore, the locking component includes a fastening screw, which is threadedly connected to the fixing plate. By rotating the fastening screw, the end of the fastening screw can be pressed against and fixed to the drive rack.

[0015] Furthermore, the outer wall of the positioning plate is provided with anti-slip texture.

[0016] Furthermore, the contact surface between the pressure plate and the knife handle is provided with anti-slip texture.

[0017] The beneficial effects of this utility model are:

[0018] The aforementioned tissue paper slitting machine with quick-change blades has the following advantages:

[0019] 1. Significantly improves tool changing efficiency

[0020] By using the insertion and engagement of the positioning component with the through hole in the tool holder, combined with the quick-clamping structure of the pressure plate and connecting fasteners, the traditional method of directly fixing the tool holder with multiple bolts is completely replaced. When changing tools, only a few operations are needed to tighten or loosen the pressure plate using the connecting fasteners; there is no need to individually remove and install multiple bolts that pass through the tool holder.

[0021] 2. Ensure consistent tool positioning accuracy

[0022] Multiple spaced positioning components engage with corresponding through holes on the tool holder to form a rigid positioning reference. Each time the tool is changed, the tool holder automatically aligns with the positioning components through the through holes, eliminating the need for manual adjustment of the cutting tool position, eliminating repeated alignment errors, ensuring the stability of cutting dimensions, and avoiding material waste caused by positioning deviations.

[0023] 3. Enhance the structural stability of the cutting process

[0024] The clamping plate presses the tool holder firmly against the mounting surface of the fixed plate, providing a uniformly distributed clamping force; the positioning component, through a perforation, forms an axial constraint. Together, they resist cutting vibration. This prevents the tool holder from shifting laterally or axially during high-speed cutting, improving cutting quality and tool life. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 A schematic diagram of a tissue paper slitting machine with quick-change blades provided in an embodiment of this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram at point A in the middle;

[0028] Figure 3 for Figure 1 Another angle illustration of a tissue slitting machine with quick-change blades;

[0029] Figure 4 for Figure 3 A schematic diagram at point B in the middle;

[0030] Figure label:

[0031] 100. Fixing plate; 200. Positioning assembly; 210. Positioning plate; 220. Closing drive mechanism; 221. Fixing disc; 222. Drive disc; 223. Rotation power source; 224. Drive rack; 225. Handle; 226. Drive gear; 227. Locking component; 300. Pressure plate; 400. Connecting fastener. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Please see Figures 1 to 4 This utility model provides a tissue slitting machine with quick-change blades, including a cutter, a frame, a blade mounting bracket, and a vertical motion drive mechanism. The blade mounting bracket is mounted on the frame and is used to mount the cutter. The vertical motion drive mechanism is connected to the blade mounting bracket and is used to drive the cutter to cut. The blade mounting bracket includes a fixing plate 100, a positioning component 200, a pressure plate 300, and a connecting fixing component 400.

[0034] Specifically, the fixed plate 100 is fixedly connected to the up-and-down motion drive mechanism, and the outer surface of the fixed plate 100 is the mounting surface. There are multiple positioning components 200, which are spaced apart on the fixed plate 100 along the transverse direction and protrude from the mounting surface. The handle of the cutter has multiple through holes that extend along the thickness direction. The size of the positioning component 200 is adapted to the size of the through holes and can be inserted into the corresponding through holes.

[0035] The pressure plate 300 is disposed opposite to the fixing plate 100 and is used to press the tool holder tightly against the fixing plate 100. The pressure plate 300 has a clearance hole for the clearance positioning component 200. The connecting fastener 400 is used to detachably connect the pressure plate 300 and the fixing plate 100. In specific implementations, the connecting fastener 400 can be a bolt fastener commonly used in the prior art.

[0036] During installation, align the through hole of the tool holder with the positioning component 200 and insert it, ensuring the positioning component 200 passes through the through hole. Place the pressure plate 300 to cover the tool holder, ensuring the clearance hole fits into the positioning component 200. Use the connecting fastener 400 to lock the pressure plate 300 to the fixing plate 100, pressing the tool holder firmly onto the mounting surface of the fixing plate 100. To remove the tool, first loosen the connecting fastener 400 and remove the pressure plate 300; then, simply pull the tool holder horizontally away, disengaging the through hole from the positioning component 200.

[0037] The tissue slitting machine with quick-change blades described above eliminates the need for traditional bolt-by-bolt disassembly during disassembly and installation. The positioning component 200 and the through-hole insertion ensure consistent blade position and avoid re-alignment. The pressure plate 300 applies pressure evenly to prevent blade handle displacement caused by cutting vibration.

[0038] In this embodiment, the positioning component 200 includes a plurality of positioning plates 210 and a closing drive mechanism 220. There are a plurality of positioning plates 210, which are circumferentially spaced on the closing drive mechanism 220. The closing drive mechanism 220 can drive the plurality of positioning plates 210 to simultaneously contract or expand radially.

[0039] In use, the closing drive mechanism 220 pushes the positioning plate 210 radially inward to form a combined column that is inserted into the tool holder through hole; conversely, the closing drive mechanism 220 pushes the positioning plate 210 radially outward to separate it, and the positioning plate 210 will move outward until it abuts and is fixed against the inner wall of the through hole, thus positioning the tool.

[0040] In this structure, the positioning component 200 can adapt to the hole diameter: after the positioning plate 210 shrinks, its outer diameter is smaller than the through hole diameter, and after insertion, it expands to achieve an interference fit, thereby improving positioning accuracy; in addition, the radial clamping force can offset the cutting impact force and prevent the tool from micro-movement.

[0041] In this embodiment, the closing drive mechanism 220 includes a fixed disk 221, a drive disk 222, and a rotary power source 223. The fixed disk 221 is fixed on the fixed plate 100. The fixed disk 221 has a plurality of guide grooves that extend radially from it at intervals in the circumferential direction. Each positioning plate 210 is provided with a plug rod that can be slidably inserted into the guide groove. The drive disk 222 is coaxial with the fixed disk 221 and can be rotatably set. The drive disk 222 has a plurality of involute grooves that are at intervals in the circumferential direction. The involute grooves correspond one-to-one with the guide grooves. Each plug rod is fixed with a slider that can be slidably engaged with the involute groove. When the drive disk 222 rotates, the slider can slide along the involute groove. The rotary power source 223 is used to start the rotation of the drive disk 222.

[0042] In use, the rotating power source 223 drives the drive disk 222 to rotate, the slider slides along the involute groove, the involute curvature pushes the slider to move radially, the insertion rod slides radially along the guide groove, and all positioning plates 210 close / separate synchronously.

[0043] In this way, all positioning plates 210 can be controlled by a single drive disc 222, ensuring consistent action; the curvature of the involute groove forms a self-locking angle at the clamping position, eliminating the need for additional locking force.

[0044] Specifically, the rotary power source 223 includes a drive rack 224, a handle 225, a drive gear 226, and a locking element 227. The drive rack 224 is horizontally mounted on the fixed plate 100 and can slide laterally. Each drive disc 222 has a drive gear 226 coaxially fixed on it, and all drive gears 226 simultaneously mesh with the drive rack 224. The handle 225 is fixed to the drive rack 224 for the operator to grip and apply force to drive the drive rack 224 to perform lateral repetitive movements. The locking element 227 is mounted on the drive rack 224 and is used to fix the drive rack 224 to the fixed plate 100.

[0045] In use, with the locking element 227 unlocked, pushing the handle 225 laterally will drive the rack 224 to translate, and the rack will drive the gear 226 to rotate, which will drive the disk 222 to rotate synchronously, thereby causing the positioning plate 210 to reach a clamped or released state. Subsequently, the locking element 227 is operated to press against the rack 224 to fix its position. In this way, all positioning components 200 are controlled by a single handle 225, improving operational efficiency; the rack and pinion drive converts small-stroke operation into large-angle rotation, saving effort. Of course, in other embodiments, the rotational power source 223 can also be other forms, such as multiple bidirectional rotating motors, by electrically connecting all the motors to achieve synchronous driving of all drive disks 222 to rotate.

[0046] In this embodiment, the locking member 227 is a fastening screw, which is screwed vertically into the threaded hole of the fixing plate 100, and its end can abut against the drive rack 224. When the screw is tightened, the end of the screw presses against the rack, and friction is generated between the rack and the fixing plate 100 to lock the position.

[0047] In practice, anti-slip textures (such as cross grids or serrated textures) can also be processed on the outer wall of the positioning plate 210.

[0048] The anti-slip texture increases the coefficient of friction with the inner wall of the hole, preventing the tool from moving axially; in addition, the anti-oil stain texture design avoids slippage caused by lubricating oil.

[0049] Similarly, anti-slip textures (such as radial grooves) can be provided on the contact surface between the pressure plate 300 and the tool holder. The anti-slip textures can increase the friction between the pressure plate 300 and the tool holder interface and resist the lateral cutting force. In addition, the raised texture structure optimizes the pressure distribution and reduces local stress.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A quick-change cutter paper towel slitting machine, comprising a cutting knife, a machine frame, a cutter mounting frame and an up-and-down movement driving mechanism, the cutter mounting frame is mounted on the machine frame for mounting the cutting knife, the up-and-down movement driving mechanism is connected with the cutter mounting frame for driving the cutting knife to cut, characterized in that, The tool mounting bracket includes: A fixed plate is fixedly connected to the up-down motion drive mechanism, and the outer side of the fixed plate is a mounting surface; The positioning components are arranged at intervals along the lateral direction of the fixing plate and protrude from the mounting surface. The handle of the cutter has multiple through holes that extend along the thickness direction. The size of the positioning components is adapted to the size of the through holes and can be inserted into the corresponding through holes. A pressure plate, disposed opposite to the fixing plate, is used to press the tool holder tightly against the fixing plate. The pressure plate has clearance holes to avoid the positioning assembly. A connecting fastener is used to detachably connect the pressure plate and the fixing plate.

2. The tissue paper slitting machine with quick-change blades according to claim 1, characterized in that, The positioning component includes multiple positioning plates and a closing drive mechanism. There are multiple positioning plates, which are circumferentially spaced on the closing drive mechanism. The closing drive mechanism can drive the multiple positioning plates to simultaneously retract or expand radially.

3. The tissue paper slitting machine with quick-change blades according to claim 2, characterized in that, The closing drive mechanism includes a fixed disk, a drive disk, and a rotary power source. The fixed disk is fixed to the fixed plate. The fixed disk has multiple guide grooves spaced circumferentially and extending radially therefrom. Each positioning plate is provided with a plug rod, which can be slidably inserted into the guide groove. The drive disk is coaxial with the fixed disk and can be rotated. The drive disk has multiple involute grooves spaced circumferentially, which correspond one-to-one with the guide grooves. Each plug rod is fixed with a slider, which can be slidably engaged with the involute groove. When the drive disk rotates, the slider can slide along the involute groove. The rotary power source is used to start the rotation of the drive disk.

4. The tissue paper slitting machine with quick-change blades according to claim 3, characterized in that, The rotational power source includes a drive rack, a handle, a drive gear, and a locking element. The drive rack is horizontally arranged on the fixed plate and can slide laterally. Each drive disk has a drive gear fixed coaxially, and all the drive gears mesh with the drive rack simultaneously. The handle is fixed on the drive rack and is used to drive the drive rack to move laterally repeatedly. The locking element is arranged on the drive rack and is used to fix the drive rack to the fixed plate.

5. The tissue paper slitting machine with quick-change blades according to claim 4, characterized in that, The locking component includes a fastening screw, which is threadedly connected to the fixing plate. When the fastening screw is rotated, the end of the fastening screw can be pressed against and fixed to the drive rack.

6. The tissue paper slitting machine with quick-change blades according to claim 2, characterized in that, The outer wall of the positioning plate is provided with anti-slip texture.

7. The tissue paper slitting machine with quick-change blades according to claim 1, characterized in that, The contact surface between the pressure plate and the knife handle is provided with anti-slip texture.

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