Automatic cotton roll cutting machine

Abstract

The utility model discloses an automatic cotton roll cutting machine, which belongs to the field of bandage cutting technology. It mainly includes a frame, on which a matching feeding mechanism and a cutting mechanism are arranged, the cutting mechanism includes a cutting knife for material cutting, the feeding mechanism includes a mobile supporting material platform and a mobile feeding platform for automatic material transportation, a cutting groove for the cutting knife to pass through is arranged between the mobile supporting material platform and the mobile feeding platform, an obstacle avoidance sensor is arranged on the side away from the cutting blade, the obstacle avoidance sensor corresponds to the cutting groove, and the obstacle avoidance sensor can control the driving mechanism of the feeding mechanism and the cutting mechanism to stop suddenly. The utility model adds an obstacle avoidance sensor on the side away from the cutting blade, and when an obstacle is sensed, the obstacle avoidance sensor can control the driving mechanism of the feeding mechanism and the cutting mechanism to stop suddenly, so as to avoid the back side of the cutting knife from colliding with the obstacle, causing the cutting knife to be damaged or the cutting knife to fall off during the collision.

Description

Technical Field

[0001] The utility model belongs to the technical field of bandage and cotton roll cutting, and in particular relates to an automatic cotton roll cutting machine. Background Art

[0002] Bandages and cotton rolls are commonly used materials in medical treatment and daily care, used to fix and protect surgical or injured parts. There are many types of bandages and cotton rolls, and the commonly used ones are gauze bandages, cotton bandages, elastic bandages, self-adhesive bandages, pressure bandages, hemostatic cotton rolls and dental cotton rolls. For the convenience of production, bandages and cotton rolls are uniformly made into long cylindrical roll structures during production, and then cut into different lengths according to requirements.

[0003] A Chinese patent with authorization announcement number "CN220197800U" discloses a band saw type bandage slitting machine. By setting a second displacement device and a first displacement device, the second displacement device, the feeding table, the material pressing device and the material pressing and blocking device can be driven to move horizontally back and forth toward the position of the cutting blade at the same time. During the movement, the material pressing device and the material pressing and blocking device can press the bandage to achieve rapid cutting of multiple bundles of bandages at the same time; and a material blocking plate is set, and the ends of the multiple bundles of bandages are manually aligned with the material blocking plate, so that no defective products will appear in the first and last cutting of the bandage.

[0004] However, in actual use, the above prior art still has the following problems:

[0005] 1. Since the cutting blade is a band saw, during the rotation and cutting process of the band saw, the cutting blade is often prone to fall off due to reasons such as the inadequate coordination between the bandage feeding and the cutting blade or the inadequate debugging of the cutting blade. The cutting blade falls off during the rotation process and is easy to injure workers by mistake, resulting in a major safety hazard.

[0006] 2. The structure of the pressing device is unreasonable. Since the bottom of the pressing device is essentially a plane, if the pressure of the pressing device is too low, the pressing device cannot press the material and drive it to retract in time, which makes it easy for the material to interfere with the cutting blade and cause the cutting blade to fall off; if the pressure of the pressing device is too high, the material will be deformed during cutting, and the cut surface of the material will have an inclination or curvature, which does not meet the processing requirements; at the same time, the contact area of ​​the anti-slip layer at the bottom is too large. After pressing the material, there will be indentations on the surface of the material, affecting the processing quality of the product.

[0007] 3. The support mechanism and the whole machine are separate structures. Since the whole machine needs to be disassembled for transportation and sales, the installation and debugging of the support mechanism during assembly is rather complicated. Customers cannot install and debug by themselves, which is extremely inconvenient.

[0008] 4. During the cutting operation and friction process, the cutting blade is prone to produce melted polyester cotton wool attached to the cutting blade, and the blade and the blade support wheel assembly produce friction, resulting in black stains and melted cotton wool filaments on the cut of the bandage after cutting, which seriously affects the cutting quality of the bandage. Utility Model Content

[0009] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide an automatic cotton roll cutting machine, which adds an obstacle avoidance sensor on the side away from the cutting knife blade. When an obstacle is sensed, the obstacle avoidance sensor can control the driving mechanism of the feeding mechanism and the cutting mechanism to stop urgently, so as to avoid the back side of the cutting knife colliding with the obstacle, causing damage to the cutting knife or the cutting knife falling off during the collision, thereby greatly improving the safety of automatic cotton roll cutting.

[0010] The automatic cotton roll cutting machine described herein comprises a frame on which a matching feeding mechanism and a cutting mechanism are provided. The cutting mechanism comprises a cutting knife for cutting materials. The feeding mechanism comprises a movable supporting material table and a movable feeding table for automatically conveying materials. A cutting groove for the cutting knife to pass through is provided between the movable supporting material table and the movable feeding table. An obstacle avoidance sensor is provided on the side away from the cutting blade of the cutting knife. The obstacle avoidance sensor corresponds to the cutting groove. The obstacle avoidance sensor can control the driving mechanism of the feeding mechanism and the cutting mechanism to stop suddenly.

[0011] Preferably, a first pressing mechanism and a second pressing mechanism are provided on both sides of the cutting groove, the first pressing mechanism is connected to the movable supporting platform through a telescopic mechanism, and the second pressing mechanism is connected to the movable feeding platform through a telescopic mechanism; the first pressing mechanism and the second pressing mechanism both include a pressing block, and an anti-slip layer is provided at the bottom of the pressing block, and the anti-slip layer on one side of the first pressing mechanism and the second pressing mechanism close to the cutting groove is lower than the anti-slip layer on the other side.

[0012] Preferably, the pressing block has a stepped structure, a protrusion is provided at the bottom of the pressing block, and the first pressing mechanism and the second pressing mechanism are arranged on one side with the protrusion close to the cutting groove, and an anti-slip layer is provided at the bottom of the pressing block, and the anti-slip layer is an anti-slip pad with anti-slip protrusions.

[0013] Preferably, the feeding mechanism also includes a workbench and a discharging table, the discharging table corresponds to the initial position of the movable supporting table, the workbench is slidably connected with a mobile table, the mobile table is connected to the movable supporting table, the sliding direction of the mobile table is parallel to the cutting direction, the workbench is fixedly connected with a first driving mechanism and at least one buffer mechanism, the output end of the first driving mechanism is movably connected with a driving bracket, the driving bracket is fixedly connected to the moving table, the buffer mechanism corresponds to the sliding limit position of the moving table, the mobile feeding table is slidably set on the mobile table, and the sliding direction of the mobile feeding table is perpendicular to the cutting direction.

[0014] Preferably, a support plate arranged in a grid structure is fixedly connected to one end of the movable platform close to the cutting groove, and a sliding groove is provided at the bottom of the movable feeding platform, and the support plate is slidably arranged in the sliding groove.

[0015] Preferably, the cutting mechanism comprises an upper shell body and a lower shell body, a first transmission wheel is rotatably connected in the upper shell body, a second transmission wheel is rotatably connected in the lower shell body, a cutting knife is rotatably connected between the first transmission wheel and the second transmission wheel, the first transmission wheel and the second transmission wheel are respectively provided with isolation layers matching with the cutting knife, an isolation wheel group on a blade holder is rotatably connected to the upper shell body, a sharpener for opening a cutting edge and sharpening the cutting knife is fixedly connected to the lower shell body, an isolation wheel group under the blade holder matching with the sharpener is rotatably connected to the lower shell body, the isolation wheel group under the blade holder is rotatably connected to the cutting knife, at least two cleaning brushes arranged opposite to each other are provided below the isolation wheel group under the blade holder, the cleaning brushes match with two side surfaces of the cutting knife.

[0016] Preferably, a brake mechanism for braking the second transmission wheel is provided in the lower shell body, and the brake mechanism includes a connecting rod, one end of which extends out of the lower shell body and is fixedly connected to a pedal, an elastic component is provided between the position of the connecting rod close to the pedal and the lower shell body, one end of the connecting rod located in the lower shell body is rotatably connected to the lower shell body, and a brake block matching the second transmission wheel is provided on the connecting rod.

[0017] Preferably, a mounting groove is provided on one side of the mobile feeding platform, and an adaptive width adjustment fine-tuning mechanism is provided in the mounting groove, and the adaptive width adjustment fine-tuning mechanism includes a side baffle plate, and at least two parallel swing rods are rotatably connected between the side baffle plate and the side wall of the mobile feeding platform, and a spring is provided between the side baffle plate and the side wall of the mobile feeding platform to drive the swing rod and the side wall of the mobile feeding platform to be diagonally arranged;

[0018] A detachable extension table is provided at one end of the mobile feeding table away from the cutting groove, and the extension table is rotatably connected to the mobile feeding table. The two ends of the mobile feeding table and the extension table are respectively provided with a matching first pin seat and a second pin seat, and bolt locating pins are jointly inserted in the first pin seat and the second pin seat.

[0019] Preferably, a base is provided at the bottom of the frame, and a supporting mechanism is rotatably connected between the base and the feeding mechanism, the supporting mechanism includes a lower supporting frame and an upper supporting frame, the lower supporting frame is fixed with a lower mounting joint, the lower mounting joint is rotatably connected to the base, an upper mounting joint is fixed on the upper supporting frame, the upper mounting joint is rotatably connected to the feeding mechanism, an adjustable threaded rod is provided between the lower supporting frame and the upper supporting frame, and both ends of the threaded rod are respectively threadedly connected to the lower supporting frame and the upper supporting frame.

[0020] Preferably, it also includes a dust removal device, a control display and a distribution box. The air inlet duct of the dust removal device is connected to the lower shell. The control display is rotatably connected to the frame through a rotating mechanism. The distribution box, the dust removal device and the driving mechanism that controls the feeding mechanism and the cutting mechanism are all electrically connected to the control display.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. This embodiment adds an obstacle avoidance sensor on the side away from the cutting blade of the cutter, thereby providing a protection function for the automatic cotton roll cutting machine. During the retraction process of the cutter, the obstacle avoidance sensor senses its retraction path in advance. When an obstacle is sensed, the obstacle avoidance sensor can control the driving mechanism of the feeding mechanism and the cutting mechanism to stop urgently, so as to avoid the back side of the cutter from colliding with the obstacle, causing damage to the cutter or the cutter falling off during the collision, thereby greatly improving the safety of automatic cutting of materials such as cotton rolls.

[0023] 2. The bottom of the pressing mechanism adopts a stepped structure and an anti-skid layer with anti-skid protrusions. When pressing the material, the anti-skid protrusions contact the material. This contact is point contact, which can ensure that there is enough friction between the pressing block and the material so that the material can be smoothly withdrawn, and when cutting, it can avoid excessive contact surface, which will cause deformation of the material surface and affect the cutting effect. At the same time, the pressure on one side of the material cutting groove is greater than the pressure on the other side, so that the material only has a point-shaped indentation close to the cutting groove. In this way, the indentation is less and easier to flatten, which greatly improves the product quality.

[0024] 3. Add two sets of isolation wheel groups and isolation layers, that is, two nylon wheels are respectively fitted with the two sides of the cutting knife. During the rotation of the cutting knife, the nylon wheels rub and rotate with the two sides of the cutting knife. The isolation layer prevents the inner side of the cutting knife from directly contacting the transmission wheel to produce metal friction, thereby avoiding black edges on the cut surface of the bandage and cotton roll during the cutting process.

[0025] 4. By setting up the support mechanism, the whole machine does not need to be disassembled when it is transported and sold over long distances. It can be assembled in advance to avoid the position change of one side of the feeding mechanism due to bumps during transportation. When it is necessary to fine-tune the feeding mechanism and the cutting mechanism, you only need to turn the threaded rod to adjust the height of the support mechanism, thereby adaptively adjusting the height and angle of the feeding mechanism, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front structural schematic diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the back structure of the utility model;

[0028] Figure 3It is a schematic diagram of the internal structure of the utility model;

[0029] Figure 4 for Figure 3 A partial enlarged view of part A;

[0030] Figure 5 for Figure 3 A partial enlarged view of part B;

[0031] Figure 6 It is a structural schematic diagram of the feeding mechanism;

[0032] Figure 7 It is a schematic diagram of the top view of the feeding mechanism;

[0033] Figure 8 It is a schematic diagram of the disassembled structure of the feeding mechanism;

[0034] Fig. 9 It is a schematic diagram of the front structure of the mobile feeding platform;

[0035] Fig.10 It is a schematic diagram of the coordination structure of the first material pressing mechanism and the second material pressing mechanism;

[0036] Fig.11 It is a schematic diagram of the coordination between the saw blade limit mechanism and the obstacle avoidance sensor;

[0037] Fig.12 is a structural schematic diagram of a brake mechanism;

[0038] Fig.13 It is a structural diagram of the supporting mechanism;

[0039] Fig.14 It is a connection diagram of the mobile feeding table and the extended feeding table.

[0040] In the figure, 1, base; 2, frame; 3, cantilever rotation mechanism; 4, control display; 5, cutting mechanism; 501, cutting drive mechanism; 502, driving wheel; 503, second transmission wheel; 504, first transmission wheel; 505, tensioning mechanism; 506, cutting knife; 507, upper shell; 508, lower shell; 6, isolation wheel group on blade bracket; 601, protective cover; 602, slotting; 603, rack; 604, gear; 605, hand wheel; 606, Blade bracket isolation wheel assembly seat; 607, isolation anti-sway wheel; 608, backing wheel; 7, obstacle avoidance sensor; 8, feeding mechanism; 801, unloading platform; 802, workbench; 803, mobile platform; 8031, second driving mechanism; 8032, support plate; 8033, support roller; 804, mobile feeding platform; 8041, sliding groove; 8042, first pin seat; 8043, second pin seat; 8044, bolt positioning pin; 8045, extended material platform; 8046 , mounting groove; 8047, side baffle; 8048, swing rod; 8049, spring; 8050, reinforcement plate; 8051, cover plate; 805, movable support material platform; 806, first pressing mechanism; 8061, pressing block; 8062, anti-slip layer; 8063, anti-slip protrusion; 8064, protrusion; 807, second pressing mechanism; 808, cutting groove; 809, buffer mechanism; 810, first driving mechanism; 811, driving bracket; 812, fastener ; 813, telescopic mechanism; 814, sliding plate; 9, dust removal device; 10, supporting mechanism; 1001, lower supporting frame; 1002, threaded rod; 1003, upper supporting frame; 1004, lower mounting joint; 1005, upper mounting joint; 11, distribution box; 12, brake mechanism; 1201, connecting rod; 1202, pedal; 1203, elastic component; 1204, brake block; 13, isolation wheel set under blade bracket; 14, sharpener; 15, cleaning brush. DETAILED DESCRIPTION

[0041] The utility model is further described below in conjunction with the accompanying drawings:

[0042] The directional nouns involved in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application according to the visual orientation shown in the accompanying drawings. Unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0043] like Figures 1 to 14As shown, an automatic cotton roll cutting machine includes a frame 2, which plays a supporting role. The frame 2 is provided with a matching feeding mechanism 8 and a cutting mechanism 5, and the cutting mechanism 5 includes a cutting knife 506 for cutting materials. In this embodiment, the cutting knife 506 is preferably a band saw with a blade sharpened on one side. The feeding mechanism 8 includes a movable support platform 805 and a movable feeding platform 804 for automatic material transportation. The movable feeding platform 804 is flush with the upper end surface of the movable support platform 805, and the movable support platform 805 is fixedly connected to the movable feeding platform 804. A cutting groove 808 for the cutting knife 506 to pass through is provided between the movable support platform 805 and the movable feeding platform 804, wherein an obstacle avoidance sensor 7 is provided on the side away from the blade of the cutting knife 506. When installed, the obstacle avoidance sensor 7 is installed close to the back of the cutting knife 506, and the obstacle avoidance sensor 7 adopts a photoelectric induction switch or a laser sensor. In this embodiment, a laser sensor is preferred. The obstacle avoidance sensor 7 corresponds to the cutting groove 808, that is, the light spot signal emitted by the obstacle avoidance sensor 7 needs to pass through the cutting groove 808. The obstacle avoidance sensor 7 is used to sense in advance whether there is an obstacle at the cutting groove 808 when the cutting knife 506 is retracted. When an obstacle is sensed, the obstacle avoidance sensor 7 can control the driving mechanism of the feeding mechanism 8 and the cutting mechanism 5 to stop urgently to avoid the back side of the cutting knife 506 colliding with the obstacle, resulting in damage to the cutting knife 506 or the cutting knife 506 falling off during the collision, which greatly improves the safety of automatic cutting of materials such as cotton rolls and extends the service life of the cutting knife 506.

[0044] like Figure 6 to Figure 7 As shown, a first pressing mechanism 806 is provided on one side of the cutting groove 808, and a second pressing mechanism 807 is provided on the other side of the cutting groove 808. Both sides of the first pressing mechanism 806 are connected to the movable support material platform 805 through telescopic mechanisms 813, and both sides of the second pressing mechanism 807 are connected to the sliding plate 814 through telescopic mechanisms 813. The movable feeding platform 804 is fixedly mounted on the sliding plate 814, and the movable platform 803 is connected to the movable support material platform 805. Specifically, the first pressing mechanism 806 and the second pressing mechanism 807 are fixedly connected to the protruding end of the telescopic mechanism 813, and the telescopic mechanism 813 is preferably a cylinder; Fig.10 As shown, the first pressing mechanism 806 and the second pressing mechanism 807 both include a pressing block 8061, and a non-slip layer 8062 is provided at the bottom of the pressing block 8061. The non-slip layer 8062 on one side of the first pressing mechanism 806 and the second pressing mechanism 807 close to the cutting groove 808 is lower than the non-slip layer 8062 on the other side. That is, the pressing block 8061 or the non-slip layer 8062 adopts a stepped structure, so that when the first pressing mechanism 806 and the second pressing mechanism 807 press the material, the pressure on the side close to the cutting groove 808 is greater than the pressure on the other side. This structure is conducive to the second pressing mechanism 807 driving the material to retreat after cutting is completed, thereby facilitating the smooth retreat of the cutting knife 506.

[0045] In this embodiment, the pressing block 8061 is in a stepped structure, that is, a protrusion 8064 is provided at the bottom of the pressing block 8061, and the first pressing mechanism 806 and the second pressing mechanism 807 are both provided with a side of the protrusion 8064 close to the cutting groove 808, and an anti-skid layer 8062 is provided at the bottom of the pressing block 8061, and the anti-skid layer 8062 is an anti-skid pad with anti-skid protrusions 8063. When the material is pressed, the anti-skid protrusions 8063 contact the material, and the contact is point contact, which can ensure that there is enough friction between the pressing block 8061 and the material so that the material can retreat, and can also avoid excessive contact surface during cutting, which causes deformation of the material and affects the cutting effect. At the same time, the pressure on one side of the material cutting groove 808 is greater than the pressure on the other side, so that the material has only a heavy point indentation close to the cutting groove 808, so that the indentation is less and easier to flatten, which greatly improves the product quality.

[0046] like Figures 6 to 9 As shown, the feeding mechanism 8 also includes a workbench 802 and a discharging platform 801. The discharging platform 801 corresponds to the initial position of the movable supporting platform 805. The side of the discharging platform 801 close to the blade of the cutting knife 506 can be rotated downward to tilt it downward, thereby facilitating the discharging of the cut materials. The workbench 802 is slidably connected to a moving platform 803 through a matching slide rail 1 and a slider 1. The sliding direction of the moving platform 803 is set parallel to the cutting direction. The workbench 802 is fixedly connected to a first driving mechanism 810 and two buffer mechanisms 809. The first driving mechanism 810 can be any one of a cylinder, an electric push rod, and a screw mechanism. In this embodiment, the first driving mechanism 810 is preferably a cylinder. The output end of the first driving mechanism 810 is movably connected to a driving bracket 811. Specifically, the output end of the first driving mechanism 810 is fixedly connected to a The screw rod and the driving bracket 811 are provided with a mounting hole, the mounting hole is sleeved on the screw rod, and the mounting hole diameter is larger than the screw rod diameter. The screw rod is threadedly connected with a fastener 812, and the driving bracket 811 is fixed and limited by the fastener 812. The driving bracket 811 is fixedly connected to the moving platform 803, and a certain floating margin is provided for the sliding of the moving platform 803 through the driving bracket 811, so as to avoid the moving platform 803 being rigidly connected to the first driving mechanism 810 during frequent sliding, thereby avoiding damage to the first driving mechanism 810, thereby extending the service life of the first driving mechanism 810.

[0047] Two buffer mechanisms 809 are respectively arranged on both sides of the sliding of the movable platform 803, and the buffer mechanisms 809 correspond to the sliding limit positions of the movable platform 803, thereby further preventing the movable platform 803 from impacting the first driving mechanism 810 and damaging the blade and cutting effect due to excessive speed at the end of the knife retreat. The movable feeding platform 804 is slidably arranged on the movable platform 803 through the sliding plate 814. Specifically, the bottom of the movable feeding platform 804 is fixedly connected to the sliding plate 814, and the bottom of the sliding plate 814 is provided with matching slide rails 2 and sliders 2. A second driving mechanism 8031 ​​is fixed on the movable platform 803. The second driving mechanism 8031 ​​can be a cylinder, an electric push rod, Any one of the screw mechanisms. In this embodiment, the second driving mechanism 8031 ​​is a screw and a high-precision motor. The screw is rotatably connected to the moving table 803, one end of the screw is connected to the high-precision motor, a screw nut is slidably connected to the screw, the screw nut is fixedly connected to the sliding plate 814, the sliding direction of the mobile feeding table 804 is perpendicular to the cutting direction, the sliding direction of the mobile feeding table 804 is the feeding direction, and a support roller 8033 is installed at the end of the mobile table 803. The support roller 8033 is rotatably connected to the bottom of the mobile feeding table 804, and the support roller 8033 plays a role in supporting the mobile feeding table 804 and assisting the sliding of the mobile feeding table 804 at the rear.

[0048] A support plate 8032 arranged in a grid structure is fixedly connected to one end of the movable table 803 near the cutting groove 808 . The support plate 8032 plays the role of supporting and blocking the material. A sliding groove 8041 is provided at the bottom of the movable feeding table 804 , and the support plate 8032 is slidably arranged in the sliding groove 8041 .

[0049] like Figure 3 and Figure 4 As shown, the cutting mechanism 5 includes an upper shell 507 and a lower shell 508, a first transmission wheel 504 is rotatably connected in the upper shell 507, and a second transmission wheel 503 is rotatably connected in the lower shell 508, the first transmission wheel 504 and the second transmission wheel 503 are arranged up and down, and either the first transmission wheel 504 or the second transmission wheel 503 is connected to the driving mechanism. In this embodiment, the second transmission wheel 503 is rotatably connected to the driving wheel 502 through a belt, the driving wheel 502 is rotatably connected to the lower shell 508, and the input end of the driving wheel 502 is connected to the cutting drive mechanism 501, and the cutting drive mechanism 501 is a reduction motor.

[0050] The first transmission wheel 504 and the second transmission wheel 503 are connected to each other for rotation together, and the outer periphery of the first transmission wheel 504 and the second transmission wheel 503 is covered with an isolation layer, and the isolation layer is located between the first transmission wheel 504, the second transmission wheel 503 and the cutting knife 506. The isolation layer is preferably made of polyurethane. During the rotation of the cutting knife 506, the first transmission wheel 504 and the second transmission wheel 503 are prevented from directly contacting and generating metal friction with the cutting knife 506, thereby cleaning and protecting the inner side of the cutting knife 506 to avoid metal powder residue.

[0051] The upper shell 507 is slidably connected to the isolation wheel set 6 on the blade support. Fig.11 As shown, the isolation wheel set 6 on the blade bracket includes a protective cover 601 with upper and lower openings, the cutting knife 506 passes through the protective cover 601, the protective cover 601 is slidably connected to the upper shell 507, a rack 603 is fixed on one side of the protective cover 601, a rotating shaft passes through and rotates on the upper shell 507, a gear 604 meshing with the rack 603 is fixed on one end of the rotating shaft, a hand wheel 605 is provided on the other end of the rotating shaft, a slot 602 cooperating with the first transmission wheel 504 is opened on the protective cover 601, and the bottom of the protective cover 601 is rotatably connected to two cooperating Isolation anti-sway wheel 607, the isolation layer of the isolation anti-sway wheel 607 is preferably made of nylon, the two isolation anti-sway wheels 607 are rotatably connected to the two sides of the cutting knife 506, the obstacle avoidance sensor 7 is installed on the blade bracket isolation wheel assembly seat 606, and the obstacle avoidance sensor 7 is close to the back of the cutting knife 506, and a backing wheel 608 is also rotatably provided on the blade bracket isolation wheel assembly seat 606, and the outer side wall of the backing wheel 608 is rotatably connected to the back of the cutting knife 506, and the backing wheel 608 can support the cutting knife 506 during the cutting process of the cutting knife 506 to prevent the cutting knife 506 from moving backward.

[0052] When the cutting knife 506 rotates, the isolation wheel group 6 and the backing wheel 608 on the blade bracket limit the cutting knife 506 to prevent the cutting knife 506 from being free during operation; the isolation wheel group 6 on the blade bracket can also avoid direct contact with metal and metal friction, thereby cleaning and protecting both sides of the cutting knife 506 to avoid metal powder residue.

[0053] A knife sharpener 14 for sharpening and sharpening the cutting knife 506 is fixedly connected to the lower shell 508. The knife sharpener 14 is a prior art. The structure and working principle of the knife sharpener 14 can be found in CN220921741U and will not be described in detail.

[0054] The lower shell body 508 is rotatably connected with a blade support lower isolation wheel group 13 that cooperates with the sharpener 14. The blade support lower isolation wheel group 13 includes two matching isolation anti-sway wheels 607 and a backing wheel 608. The blade support lower isolation wheel group 13 is arranged below the sharpener 14. The backing wheel 608 is rotatably connected to the back of the cutting knife 506. The blade support lower isolation wheel group 13 is rotatably connected to the cutting knife 506, that is, the two isolation anti-sway wheels 607 are respectively fitted with the two side surfaces of the cutting knife 506. During the rotation of the cutting knife 506, the cutting knife 506 is limited to avoid the blade from being free during operation, and can also avoid metal friction caused by direct contact with metal, thereby cleaning and protecting both sides of the cutting knife 506 to avoid metal powder residue, and the backing wheel 608 prevents the cutting knife 506 from moving backward during the cutting process.

[0055] At least two cleaning brushes 15 are arranged opposite to each other below the isolation wheel group 13 under the blade support, and the cleaning brushes 15 cooperate with the two sides of the cutting knife 506. During the cutting process of materials such as bandages and cotton rolls, cotton wool and melted filaments may adhere to the cutting knife 506, affecting the cutting effect. The cleaning brushes 15 can clean the cotton wool and melted filaments, thereby further cleaning the cutting knife 506.

[0056] like Figure 3 and Fig.12 As shown, a brake mechanism 12 for braking the second transmission wheel 503 is provided in the lower housing 508. When an emergency occurs, the brake mechanism 12 can mechanically brake the second transmission wheel 503. The brake mechanism 12 includes a connecting rod 1201, one end of which extends out of the lower housing 508 and is fixedly connected to a pedal 1202. An elastic component 1203 is provided between the connecting rod 1201 near the pedal 1202 and the lower housing 508. The elastic component 1203 is preferably a tension spring. One end of the connecting rod 1201 located in the lower housing 508 is rotatably connected to the lower housing 508. A brake block 1204 matching the second transmission wheel 503 is provided on the connecting rod 1201. By stepping on the pedal 1202, the elastic component 1203 is stretched, and the brake block 1204 rubs against the inner surface of the second transmission wheel 503, so that the second transmission wheel 503 stops rotating, and then the cutting knife 506 stops rotating.

[0057] like Fig.14As shown, a mounting groove 8046 is provided on one side of the mobile feeding platform 804, a cover plate 8051 is fixed on the top of the mounting groove 8046, and an adaptive width adjustment fine-tuning mechanism is provided in the mounting groove 8046. The adaptive width adjustment fine-tuning mechanism is used for positioning and feeding of bandages and cotton rolls of various specifications. When in use, a plurality of cotton roll materials arranged side by side are placed on the mobile feeding platform 804 and cut at the same time. Since the thickness of materials of different specifications is different, in order to adapt to materials of various specifications, the adaptive width adjustment fine-tuning mechanism can press them tightly against the side wall of the mobile feeding platform 804 away from the mounting groove 8046.

[0058] Specifically, the adaptive width fine-tuning mechanism includes a side baffle 8047, which is a C-shaped structure. The upper and lower ends of the side baffle 8047 are respectively fixedly connected to reinforcing plates 8050. At least two parallel swing rods 8048 are rotatably connected between the side baffle 8047 and the side wall of the mobile feeding platform 804. A certain distance is set between adjacent swing rods 8048. A spring 8049 that drives the swing rod 8048 and the side wall of the mobile feeding platform 804 is set diagonally. In the embodiment, one end of the spring 8049 is installed close to one end of one of the swing rods 8048, and the other end of the spring 8049 is installed close to the other end of the adjacent swing rod 8048. The spring 8049 is a tension spring. Through the tension of the spring 8049, the swing rod 8048 is set diagonally to the side wall of the mobile feeding platform 804. When the material squeezes the side baffle 8047, the swing rod 8048 is forced to swing, and the side baffle 8047 moves to one side of the installation groove 8046. Under the tension of the spring 8049, the outer side of the side baffle 8047 presses the material tightly.

[0059] like Figure 5 and Fig.14 As shown, a detachable extension platform 8045 is provided at one end of the mobile feeding platform 804 away from the cutting groove 808, and the bottom of the extension platform 8045 is rotatably connected to the mobile feeding platform 804 through a rotating pin seat, and the two ends of the mobile feeding platform 804 and the extension platform 8045 are respectively provided with a matching first pin seat 8042 and a second pin seat 8043, and a bolt positioning pin 8044 is inserted into the first pin seat 8042 and the second pin seat 8043. The mobile feeding platform 804 and the extension platform 8045 adopt a split structure, so that the whole machine is more convenient to disassemble, transport and ship, and the extension platform 8045 improves the support effect of long strip materials.

[0060] like Figure 1 and Fig.13As shown, a base 1 is provided at the bottom of the frame 2, and a support mechanism 10 is rotatably connected between the base 1 and the feeding mechanism 8. The support mechanism 10 includes a lower support frame 1001 and an upper support frame 1003. The lower support frame 1001 is fixed with a lower mounting joint 1004, and the lower mounting joint 1004 is rotatably connected to the base 1 through a pin shaft. An upper mounting joint 1005 is fixed on the upper support frame 1003, and the upper mounting joint 1005 is rotatably connected to the workbench 802 in the feeding mechanism 8 through a pin shaft. An adjustable threaded rod 1002 is provided between the lower support frame 1001 and the upper support frame 1003, and both ends of the threaded rod 1002 are threadedly connected to the lower support frame 1001 and the upper support frame 1003 respectively. Through the support mechanism 10, when the whole machine is sold over long distances, it does not need to be disassembled and can be assembled in advance to prevent one side of the feeding mechanism 8 from being bumped during transportation and causing position changes. When it is necessary to fine-tune the feeding mechanism 8 and the cutting mechanism 5 to cooperate, it is only necessary to rotate the threaded rod. Only by rotating the threaded rod 1002, the height of the support mechanism 10 can be adjusted, thereby adaptively adjusting the height and angle of the workbench 802.

[0061] The automatic cotton roll cutting machine also includes a dust removal device 9, a control display 4 and a distribution box 11. A sealing baffle is provided at the bottom of the cleaning brush 15. The sealing baffle cooperates with the lower shell 508 to separate the cleaning brush 15 and the isolation wheel group 13 under the blade bracket into an independent space. The air inlet pipe of the dust removal device 9 is connected to the independent space. The control display 4 is rotatably connected to the frame 2 through the cantilever rotation mechanism 3. The cantilever rotation mechanism 3 is a prior art. The distribution box 11, the dust removal device 9 and the driving mechanisms of the control feeding mechanism 8 and the cutting mechanism 5 are all electrically connected to the control display 4. Among them, the driving mechanisms of the control feeding mechanism 8 and the cutting mechanism 5 include a first driving mechanism 810, a second driving mechanism 8031 ​​and a cutting driving mechanism 501, and the telescopic mechanism 813 is connected to the control display 4.

[0062] During the bandage and cotton roll cutting process, cotton wool and melted filaments may adhere to the cutting knife 506, affecting the cutting effect. The dust removal device 9 can be used to remove dust from the cutting knife 506 and the cleaning brush 15 during the cutting process, thereby improving the cutting effect.

[0063] Those skilled in the art can use the existing technologies they know, such as installing corresponding mechanical limit switches or photoelectric sensors to limit the specified positions of each actuator during the following action process; to achieve automated operation, the utility model can use CNC technology or PLC to control the actions of each actuator.

[0064] Working principle:

[0065] A plurality of long cylindrical bandages, cotton rolls and other materials are placed side by side on the mobile feeding table 804. Since the front end of the material is usually uneven, it will have a conical boss or an inverted conical groove during the rolling process. This part is the waste material that needs to be cut off. Therefore, before the first cutting, the worker pushes the waste part at the front end of the material forward to the predetermined position of the mobile supporting material table 805, that is, the cutting groove 808 is the dividing line between the waste material and the finished product. The device is started by controlling the display 4, and the cutting length and quantity can be preset.

[0066] The dust removal device 9 and the cutting drive mechanism 501 are started. The cutting drive mechanism 501 drives the first transmission wheel 504 and the second transmission wheel 503 to rotate through the driving wheel 502, and then drives the cutting knife 506 to rotate. The feeding mechanism 8 is initially located at the origin. When working, the first pressing mechanism 806 presses the front end of the material through the telescopic mechanism 813, and the mobile feeding platform 804 moves backward a certain distance under the action of the second driving mechanism 8031, and the second pressing mechanism 807 presses the material under the action of the telescopic mechanism 813. Then the first driving mechanism 810 is started, driving the mobile platform 803, the mobile feeding platform 804, the mobile supporting platform 805 and the material to move synchronously toward the blade of the cutting knife 506, so that the cutting knife 506 cuts off the front end of the material.

[0067] Afterwards, the second driving mechanism 8031 ​​is started again, driving the mobile feeding table 804 and the material to move forward a distance X first, and then drive it to retreat a distance 2X, so that both sides of the cutting knife 506 are separated from the material by a distance X. This distance is sufficient as long as it is convenient for the cutting knife 506 to retract. When retracting, the first driving mechanism 810 is started, driving the mobile table 803, the mobile feeding table 804, the mobile supporting table 805 and the material to move synchronously toward the back of the cutting knife 506. The obstacle avoidance sensor 7 detects whether there are any obstacles in the cutting groove 808 in real time, and completes the retraction.

[0068] Then, the telescopic mechanism 813 drives the first pressing mechanism 806 to rise, loosens the cut part of the material, and the second driving mechanism 8031 ​​starts to drive the mobile feeding platform 804 and the material forward a preset distance. At this time, the front end of the material to be processed pushes out the material cut at the bottom of the first pressing mechanism 806, and then the telescopic mechanism 813 drives the first pressing mechanism 806 to descend and press the front end of the material to be processed. After that, the second pressing mechanism 807 is released, and at the same time, the second driving mechanism 8031 ​​drives the mobile feeding platform 804 to retreat a preset distance, and the second pressing mechanism 807 presses the material again, and then the first driving mechanism 810 starts to cut again, and the cycle is repeated until the material is cut.

[0069] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic cotton roll cutting machine, comprising a frame (2), the frame (2) being provided with a feeding mechanism (8) and a cutting mechanism (5) matched with each other, the cutting mechanism (5) comprising a cutting knife (506) for cutting materials, the feeding mechanism (8) comprising a movable supporting material platform (805) and a movable feeding platform (804) for automatically conveying materials, a cutting slot (808) for the cutting knife (506) to pass through being provided between the movable supporting material platform (805) and the movable feeding platform (804), characterized in that: An obstacle avoidance sensor (7) is provided on the side away from the blade of the cutting knife (506), the obstacle avoidance sensor (7) corresponds to the cutting groove (808), and the obstacle avoidance sensor (7) can control the driving mechanism of the feeding mechanism (8) and the cutting mechanism (5) to stop suddenly.

2. The automatic cotton roll cutting machine according to claim 1, characterized in that: A first pressing mechanism (806) and a second pressing mechanism (807) are provided on both sides of the cutting groove (808); the first pressing mechanism (806) is connected to the movable supporting platform (805) via a telescopic mechanism (813); and the second pressing mechanism (807) is connected to the movable feeding platform (804) via a telescopic mechanism (813); the first pressing mechanism (806) and the second pressing mechanism (807) both comprise a pressing block (8061); an anti-slip layer (8062) is provided at the bottom of the pressing block (8061); and the anti-slip layer (8062) on one side of the first pressing mechanism (806) and the second pressing mechanism (807) close to the cutting groove (808) is lower than the anti-slip layer (8062) on the other side.

3. The automatic cotton roll cutting machine according to claim 2, characterized in that: The pressing block (8061) has a stepped structure, a protrusion (8064) is provided at the bottom of the pressing block (8061), and the first pressing mechanism (806) and the second pressing mechanism (807) are both arranged with a side having the protrusion (8064) close to the cutting groove (808), and an anti-skid layer (8062) is provided at the bottom of the pressing block (8061), and the anti-skid layer (8062) is an anti-skid pad with anti-skid protrusions (8063).

4. The automatic cotton roll cutting machine according to claim 3, characterized in that: The feeding mechanism (8) further comprises a workbench (802) and a discharging platform (801), wherein the discharging platform (801) corresponds to the movable supporting platform (805), the workbench (802) is slidably connected to a movable platform (803), the sliding direction of the movable platform (803) is arranged parallel to the cutting direction, the workbench (802) is fixedly connected to a first driving mechanism (810) and at least one buffer mechanism (809), the output end of the first driving mechanism (810) is movably connected to a driving bracket (811), the driving bracket (811) is fixedly connected to the movable platform (803), the buffer mechanism (809) corresponds to the sliding limit position of the movable platform (803), and the movable feeding platform (804) is slidably arranged on the movable platform (803), the sliding direction of the movable feeding platform (804) is arranged perpendicular to the cutting direction.

5. The automatic cotton roll cutting machine according to claim 4, characterized in that: A support plate (8032) arranged in a grid structure is fixedly connected to one end of the movable platform (803) close to the cutting groove (808); a sliding groove (8041) is provided at the bottom of the movable feeding platform (804), and the support plate (8032) is slidably arranged in the sliding groove (8041).

6. The automatic cotton roll cutting machine according to claim 1, characterized in that: The cutting mechanism (5) comprises an upper shell (507) and a lower shell (508); a first transmission wheel (504) is rotatably connected in the upper shell (507); a second transmission wheel (503) is rotatably connected in the lower shell (508); a cutting knife (506) is rotatably connected between the first transmission wheel (504) and the second transmission wheel (503); the first transmission wheel (504) and the second transmission wheel (503) are respectively provided with an isolation layer matched with the cutting knife (506); a blade is rotatably connected to the upper shell (507); The upper isolating wheel group (6) of the bracket is fixedly connected to a sharpener (14) for sharpening and sharpening the cutting knife (506) on the lower shell (508); the lower shell (508) is rotatably connected to a lower isolating wheel group (13) of the blade bracket that cooperates with the sharpener (14); the lower isolating wheel group (13) of the blade bracket is rotatably connected to the cutting knife (506); at least two cleaning brushes (15) arranged opposite to each other are provided below the lower isolating wheel group (13) of the blade bracket; the cleaning brushes (15) cooperate with two side surfaces of the cutting knife (506).

7. The automatic cotton roll cutting machine according to claim 6, characterized in that: The lower housing (508) is provided with a brake mechanism (12) for braking the second transmission wheel (503), the brake mechanism (12) comprising a connecting rod (1201), one end of the connecting rod (1201) extending out of the lower housing (508) and fixedly connected to a pedal (1202), an elastic component (1203) being provided between a position of the connecting rod (1201) close to the pedal (1202) and the lower housing (508), one end of the connecting rod (1201) being located in the lower housing (508) being rotatably connected to the lower housing (508), and a brake block (1204) matching the second transmission wheel (503) being provided on the connecting rod (1201).

8. The automatic cotton roll cutting machine according to claim 1, characterized in that: A mounting groove (8046) is provided on one side of the mobile feeding platform (804), and an adaptive width adjustment fine-tuning mechanism is provided in the mounting groove (8046). The adaptive width adjustment fine-tuning mechanism comprises a side baffle (8047), at least two parallel swing rods (8048) are rotatably connected between the side baffle (8047) and the side wall of the mobile feeding platform (804), and a spring (8049) is provided between the side baffle (8047) and the side wall of the mobile feeding platform (804) to drive the swing rod (8048) and the side wall of the mobile feeding platform (804) to be diagonally arranged; A detachable extension platform (8045) is provided at one end of the mobile feeding platform (804) away from the cutting groove (808), and the extension platform (8045) is rotatably connected to the mobile feeding platform (804). A first pin seat (8042) and a second pin seat (8043) that match each other are provided at both ends of the mobile feeding platform (804) and the extension platform (8045), and a bolt positioning pin (8044) is inserted into the first pin seat (8042) and the second pin seat (8043).

9. The automatic cotton roll cutting machine according to claim 1, characterized in that: A base (1) is provided at the bottom of the frame (2); a support mechanism (10) is rotatably connected between the base (1) and the feeding mechanism (8); the support mechanism (10) comprises a lower support frame (1001) and an upper support frame (1003); a lower mounting joint (1004) is fixed to the lower support frame (1001); the lower mounting joint (1004) is rotatably connected to the base (1); an upper mounting joint (1005) is fixed to the upper support frame (1003); the upper mounting joint (1005) is rotatably connected to the feeding mechanism (8); an adjustable threaded rod (1002) is provided between the lower support frame (1001) and the upper support frame (1003); two ends of the threaded rod (1002) are respectively threadedly connected to the lower support frame (1001) and the upper support frame (1003).

10. An automatic cotton roll cutting machine according to any one of claims 1 to 9, characterized in that: It also includes a dust removal device (9), a control display (4) and a distribution box (11); the air inlet pipe of the dust removal device (9) is connected to the lower shell (508); the control display (4) is rotatably connected to the frame (2) via a rotating mechanism (3); and the distribution box (11), the dust removal device (9) and the driving mechanisms of the control feeding mechanism (8) and the cutting mechanism (5) are all electrically connected to the control display (4).

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