A feeding device for an automatic rewinding machine

Abstract

This utility model relates to the field of rewinding machine technology and discloses a feeding device for an automatic rewinding machine, including a main frame. The main frame is equipped with a feeding mechanism and a winding mechanism. The feeding mechanism is located above the winding mechanism on the main frame. The feeding mechanism includes: a vertical plate; a sliding groove disposed on the vertical plate; a limiting plate located directly above the winding mechanism, with both ends sliding vertically within the sliding groove and fitting against the material body wound on the winding mechanism, used to detect the roll thickness of the material body; and a limiting sleeve that slides vertically on the vertical plate, with a height adjustment structure to limit the highest point of the limiting plate's upward sliding. This invention solves the problems of existing devices in monitoring the winding diameter, limiting the fabric roll diameter, and preventing the fabric roll from expanding and loosening after cutting.

Description

Technical Field

[0001] This utility model relates to the field of rewinding machine technology, specifically to a feeding device for an automatic rewinding machine. Background Technology

[0002] Packaging bags are bags used to package various daily necessities, making it easy to transport and store goods during the production and distribution process. A rewinding machine is a mechanical device that can rewind long, thin materials such as films, packaging bags, or toilet paper that are wound on large rolls onto smaller rolls. Rewinding machines can be used for rewinding toilet paper, adhesive tape, and plastic films, etc. After the production of film plastic packaging bags is completed, the original rolls are loose and not suitable for direct sale, so they need to be rewound using a rewinding machine.

[0003] Chinese utility model patent CN220744790U discloses an automatic unloading rewinding machine. During unloading, an electric telescopic rod is activated, driving a cutting blade to rise and cut the film. A servo motor is activated, driving a threaded rod to rotate. A slider engages with a groove, and as the threaded rod rotates, it raises the slider, causing a lifting block to rise and lift the take-up roller. The bottom of the lifting block has an inclined surface, allowing the take-up roller to fall onto the unloading platform for automatic unloading, eliminating the need for manual handling, saving time and labor, and improving production efficiency. As the take-up roller falls, it lands on a buffer plate, causing the buffer plate to descend and driving a pressing rod to descend. This pressing rod presses against a rotating plate, causing the rotating plate to deflect and stretching a tension spring. The deformation of the tension spring buffers the impact, ensuring the stability of the take-up roller during its descent, protecting it from damage. Simultaneously, a damper absorbs the potential energy of the spring, preventing violent shaking of the device.

[0004] During use, traditional rewinding machines have significant technical shortcomings in areas such as monitoring the winding diameter, limiting the fabric roll diameter, and preventing the fabric roll from expanding and loosening after cutting, which seriously restricts the improvement of production efficiency and product quality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a feeding device for an automatic rewinding machine, which has the advantages of real-time monitoring of the winding diameter and preventing the fabric roll from expanding and loosening after cutting. It solves the problems of existing equipment in monitoring the winding diameter, limiting the fabric roll diameter, and preventing the fabric roll from expanding and loosening after cutting.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An automatic rewinding machine's unloading device includes a main frame, on which an unloading mechanism and a winding mechanism are mounted. The unloading mechanism is located above the winding mechanism on the main frame. The unloading mechanism includes:

[0010] Elevating board;

[0011] A sliding groove is provided on the upright plate;

[0012] The limiting plate is located directly above the winding mechanism. Its two ends slide up and down in the sliding groove and are attached to the material body wound on the winding mechanism. It is used to detect the roll thickness of the material body.

[0013] The limiting sleeve slides up and down on the upright plate. The limiting sleeve is equipped with a height adjustment structure to limit the highest point of the limiting plate sliding upward.

[0014] When the winding mechanism winds the material, the material body pushes the limiting plate upward. By detecting the height of the limiting plate, the thickness of the material body can be monitored in real time. By limiting the highest point of the sliding of the limiting plate, the roll diameter of the material body can be controlled when it is rolled.

[0015] Preferably, the feeding mechanism includes:

[0016] The first motor is mounted on the main frame;

[0017] A rotating base is mounted on the main frame;

[0018] The first fixed base has two configurations, one of which is coaxially fixedly connected to the output shaft of the first motor, and the other is rotatably mounted in the rotating base;

[0019] The first fixing slot is opened on one side of the two first fixing seats that are close to each other;

[0020] The first fixed roller is disposed in the first fixed groove;

[0021] The material roller is fitted at both ends onto the first fixed rollers on both sides.

[0022] Preferably, the winding mechanism includes:

[0023] A horizontal plate is fixedly connected to the vertical plate, and an installation groove is provided on the upper surface of the horizontal plate;

[0024] The second motor is fixedly mounted on the upright plate;

[0025] The slider is horizontally slidably positioned within the mounting slot.

[0026] Two rotating shafts are provided, with the rotating shaft located inside the slider. One of the rotating shafts is coaxially fixedly connected to the second motor.

[0027] The second fixed seat is fixedly mounted on the rotating shaft;

[0028] The second fixing slot is provided on one side of the two second fixing seats that are close to each other;

[0029] The second fixed roller is disposed inside the second fixed groove;

[0030] The take-up roller is fitted onto two second fixed rollers at both ends.

[0031] Preferably, the bottom of the slider has a through threaded hole, and a first screw is used inside the threaded hole. One end of the first screw passes through the vertical plate and is fixedly connected to a hand crank handle.

[0032] Preferably, the main frame is further provided with a tensioning mechanism, the tensioning mechanism comprising:

[0033] The rotating rod is rotatably connected to the main frame.

[0034] The second screw is connected to the main frame by a threaded rotation.

[0035] The mounting plate is fixedly connected to the rotating rod and the second screw.

[0036] Two tensioning rollers are provided, with both ends of the tensioning rollers fixedly connected to the mounting plate;

[0037] The handwheel is fixedly connected to the second screw.

[0038] Preferably, the limiting plate has a through cutting groove, and a cutting blade is fixedly connected between the two limiting sleeves, with the cutting blade sliding up and down in the cutting groove.

[0039] (III) Beneficial Effects

[0040] Compared with the prior art, the present invention provides a feeding device for an automatic rewinding machine, which has the following beneficial effects:

[0041] 1. The feeding device of the automatic rewinding machine is provided with a feeding mechanism and a winding mechanism on the main frame. The feeding mechanism is provided above the winding mechanism. The limiting plate of the feeding mechanism slides vertically in the limiting groove of the upright plate. An adjustable limiting sleeve is also limited on the upright plate. The limiting sleeve is fixed at the height set as needed. When the winding mechanism winds the material body, it slides upward against the limiting plate until the limiting plate is pushed into contact with the limiting sleeve. This can limit the length of the material wound by the winding mechanism and thus control the roll diameter of the rolled material body.

[0042] 2. The feeding device of this automatic rewinding machine has a cutting blade fixedly connected to the lower part of the limiting sleeve. A through cutting groove is opened on the limiting plate and is located directly below the cutting blade. After the material body is wound to a suitable size, the limiting plate fixes the rolled material body. At this time, when the bottom surface of the limiting sleeve contacts the upper surface of the limiting plate, the cutting blade extends along the cutting groove to the unwound material body to wind it up, thereby cutting the material body. At the same time, the limiting plate can press the wound material body into a roll, thereby preventing the rolled material from expanding and loosening. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0044] Figure 2 This is a schematic diagram of the structure of this utility model during operation.

[0045] Figure 3 This is a schematic diagram of the feeding mechanism of this utility model.

[0046] Figure 4 This is a schematic diagram of the winding mechanism of this utility model.

[0047] Figure 5 This is a schematic diagram of the winding mechanism and unloading mechanism of this utility model.

[0048] Figure 6 This is a schematic diagram of the tensioning mechanism of this utility model.

[0049] Figure 7 This is a cross-sectional view of the structure of this utility model during operation.

[0050] Figure 8 This is a cross-sectional schematic diagram of the feeding mechanism and the winding mechanism of this utility model.

[0051] In the diagram: 100, main frame; 120, material body;

[0052] 200, feeding mechanism; 210, first motor; 220, rotating seat; 230, first fixed seat; 240, first fixed groove; 250, first fixed roller; 260, material roller;

[0053] 300. Winding mechanism; 301. Horizontal plate; 302. Mounting slot; 310. Second motor; 320. Rotating shaft; 330. Second fixed seat; 340. Second fixed slot; 350. Second fixed roller; 360. Winding roller; 370. Slider; 380. First screw; 390. Hand crank;

[0054] 400. Feeding mechanism; 410. Sliding groove; 420. Limiting plate; 430. Limiting sleeve; 440. Height adjustment structure; 450. Cutting groove; 460. Cutting blade; 470. Vertical plate;

[0055] 500. Tensioning mechanism; 510. Rotating rod; 520. Mounting plate; 530. Tensioning roller; 540. Second screw; 550. Handwheel. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0060] Example 1:

[0061] This embodiment provides a feeding device for an automatic rewinding machine, which has the following technical features.

[0062] Please see Figure 1- A feeding device for an automatic rewinding machine, comprising a main frame 100, wherein a feeding mechanism 200 and a winding mechanism 300 are disposed on the main frame 100, and a feeding mechanism 400 is disposed above the winding mechanism 300 on the main frame 100, the feeding mechanism 400 comprising:

[0063] 470 for the uprights;

[0064] The sliding groove 410 is provided on the vertical plate 470;

[0065] The limiting plate 420 is located directly above the winding mechanism 300. Its two ends slide up and down in the sliding groove 410 and are attached to the material body 120 wound on the winding mechanism 300. It is used to detect the roll thickness of the material body 120.

[0066] The limiting sleeve 430 slides up and down on the upright plate 470. The limiting sleeve 430 is provided with a height adjustment structure 440, which is used to limit the highest point of the upward sliding of the limiting plate 420.

[0067] When the winding mechanism 300 winds up, the material body 120 pushes the limiting plate 420 upward. By detecting the height of the limiting plate 420, the thickness of the material body 120 can be monitored in real time. By limiting the highest point of the sliding of the limiting plate 420, the roll diameter of the material body 120 when it is rolled up can be controlled.

[0068] It should be noted that a distance sensor is installed on the top plate inside the sliding groove 410. The distance sensor can measure the height of the limiting sleeve 430, which makes it easier for people to control the diameter of the roll.

[0069] Furthermore, the feeding mechanism 200 includes:

[0070] The first motor 210 is mounted on the main frame 100;

[0071] Rotary seat 220 is mounted on main frame 100;

[0072] The first fixed seat 230 has two configurations, one of which is coaxially fixedly connected to the output shaft of the first motor 210, and the other is rotatably configured in the rotating seat 220;

[0073] The first fixing groove 240 is formed on one side of the two first fixing seats 230 that are close to each other;

[0074] The first fixed roller 250 is disposed in the first fixed groove 240;

[0075] The material roller 260 is fitted at both ends onto the first fixed roller 250 on both sides.

[0076] Furthermore, the winding mechanism 300 includes:

[0077] A horizontal plate 301 is fixedly connected to a vertical plate 470, and an installation groove 302 is provided on the upper surface of the horizontal plate 301.

[0078] The second motor 310 is fixedly mounted on the vertical plate 470;

[0079] The slider 370 is horizontally slidably disposed within the mounting slot 302;

[0080] Two rotating shafts 320 are provided, with one rotating shaft 320 being fixedly connected to the second motor 310 via a coaxial core.

[0081] The second fixed seat 330 is fixedly mounted on the rotating shaft 320;

[0082] The second fixing slot 340 is provided on one side of the two second fixing seats 330 that are close to each other;

[0083] The second fixed roller 350 is disposed inside the second fixed groove 340;

[0084] The take-up roller 360 is fitted onto two second fixed rollers 350 at both ends.

[0085] It should be noted that the first motor 210 and the second motor 310 are set on the same side of the main frame 100.

[0086] Furthermore, the bottom of the slider 370 is provided with a through threaded hole, and a first screw 380 is used inside the threaded hole. One end of the first screw 380 passes through the vertical plate 470 and is fixedly connected to a hand crank handle 390.

[0087] Furthermore, the main frame 100 is also provided with a tensioning mechanism 500, the tensioning mechanism 500 including:

[0088] Rotary rod 510 is rotatably connected to the main frame 100;

[0089] The second screw 540 is rotatably connected to the main frame 100 via a thread;

[0090] Mounting plate 520 is fixedly connected to rotating rod 510 and second screw 540;

[0091] Two tension rollers 530 are provided, with both ends of the tension rollers 530 fixedly connected to the mounting plate 520;

[0092] The handwheel 550 is fixedly connected to the second screw 540.

[0093] Furthermore, the limiting plate 420 has a through cutting groove 450, and a cutting blade 460 is fixedly connected between the two limiting sleeves 430. The cutting blade 460 slides up and down within the cutting groove 450.

[0094] Working principle: By fixing the two ends of the winding roller of the rolled material body 120 onto the first fixed rollers 250 on both sides, and setting a rectangular block on one side of the first fixed roller 250 to limit it inside the first fixed groove 240 of the first fixed seat 230, the rotation and speed of the first motor 210 can be controlled to control the feeding roller to feed the material body 120 and control the feeding speed. By controlling the distance between the first fixed roller 250 away from the first motor 210 and the first motor 210, the distance between the two first fixed rollers 250 can be adapted to feeding rollers of different lengths. A winding mechanism 300 is set above the other side of the main frame 100. The two ends of the winding roller 360 of the winding mechanism 300 are detachably fixed onto the second fixed rollers 350 on both sides. The second fixed rollers 350 are fixed inside the second fixed groove 340 of the second fixed seat 330. When the second motor 310 fixed on the control plate 470 rotates, the second motor 310 can drive the rotating shaft 320 to rotate. The rotating shaft 320 is fixedly connected to the second rotating seat 220. When the second motor 310 drives the second rotating seat 220 to rotate, it drives the take-up roller 360 to rotate, thereby winding up the material body 120. Simultaneously, controlling the speed of the second motor 310 controls the winding speed of the take-up roller 360 on the material body 120. The second fixed seat 330 is located on one side of the slider 370, which slides in the mounting groove 302 of the horizontal plate 301. A circular hole is provided on the slider 370 near the motor. A threaded hole is provided on the slider 370 away from the motor. A first screw 380 is threaded inside the two sliders 370. One end of the first screw 380 passes through the vertical plate 470 and is fixedly connected to a hand crank 390. The hand crank 390 can control the distance between the two sliders 370, thereby accommodating material bodies 120 of different widths. Tensioning mechanisms 500 are provided on the two main frames 100 between the winding mechanism 300 and the unloading mechanism 200. By turning the handwheel 550, the second screw 540 can be rotated, thereby controlling the position of the two mounting plates 520 and further changing the angle between the two tensioning rollers 530, thus adjusting the tension between the material bodies 120 and allowing the winding mechanism 300 to control the tightness of the material bodies 120 during winding.

[0095] In addition, a feeding mechanism 400 is provided directly above the winding mechanism 300. The upright plate 470 of the feeding mechanism 400 is fixed to the main frame 100. A sliding groove 410 is provided on one side of the upright plates 470 that are close to each other. A limiting plate 420 is slidably connected within the sliding groove 410. The limiting plate 420 is located directly above the winding mechanism 300. Limiting sleeves 430 are fitted onto the upright plates 470 on both sides, and the limiting sleeves 430 also slide within the sliding groove 410. The top of the upright plate 470 is open... A threaded hole is provided, and a height adjustment structure 440 is provided inside the threaded hole. The bottom of the height adjustment structure 440 is fixedly connected to the limiting sleeve 430. By controlling the height adjustment structure 440, the limiting sleeve 430 is moved to a certain position. Thus, when the winding mechanism 300 winds the material body 120 to a certain height, the fabric on the winding roller 360 abuts against the lower surface of the limiting plate 420. At this time, the upper surface of the limiting plate 420 abuts against the lower surface of the limiting sleeve 430, and the limiting sleeve 430 is fixed. After reaching the desired height, the winding mechanism 300 continuously winds up the material body 120. When the material body 120 is wound up to the point where the limiting plate 420 and the limiting sleeve 430 abut, the limiting plate 420 can prevent the winding roller 360 from winding the material. At this time, the diameter of the material body 120 rolled up on the winding roller 360 is the diameter set by the user. At the same time, a through cutting groove 450 is provided on the side of the limiting plate 420 near the unloading mechanism 200. The limiting sleeve 430 is located directly above the cutting groove 450. A detachable cutting blade 460 is fixedly installed on the lower surface of the sleeve 430. When the winding roller 360 winds up the material body 120, the limiting plate 420 slowly moves closer to the limiting sleeve 430. At this time, the cutting blade 460 slowly moves downward inside the cutting groove 450. When the cutting blade 460 emerges from inside the cutting groove 450, it can cut the material body 120. At the same time, the limiting plate 420 can also press the rewound material body 120 to prevent the rolled material body 120 from becoming loose.

[0096] In summary, the feeding device of this automatic rewinding machine has a feeding mechanism 200 and a winding mechanism 300 on the main frame 100. The feeding mechanism 400 is located above the winding mechanism 300. The limiting plate 420 of the feeding mechanism 400 slides vertically in the limiting groove of the upright plate 470. An adjustable height limiting sleeve 430 is also limited on the upright plate 470. The limiting sleeve 430 is fixed at the height set as needed. When the winding mechanism 300 winds the material body 120, it slides upward against the limiting plate 420 until the limiting plate 420 is pushed into contact with the limiting sleeve 430. This limits the length of the material wound by the winding mechanism 300, thereby controlling the roll diameter of the rolled material body 120.

[0097] In summary, the feeding device of this automatic rewinding machine has a cutting blade 460 fixedly connected below the limiting sleeve 430, and a through cutting groove 450 is provided on the limiting plate 420. The cutting groove 450 is located directly below the cutting blade 460. After the material body 120 is wound to a suitable size, the limiting plate 420 fixes the rolled material body 120. At this time, when the ground of the limiting sleeve 430 contacts the upper surface of the limiting plate 420, the cutting blade 460 extends along the cutting groove 450 to the unwound material body 120 to wind it up, thereby cutting the material body 120. At the same time, the limiting plate 420 can press the wound material body 120 into a roll, thereby preventing the problem of the rolled material roll expanding and loosening.

[0098] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0099] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for an automatic rewinding machine, comprising a main frame (100), wherein a feeding mechanism (200) and a winding mechanism (300) are provided on the main frame (100), characterized in that, The main frame (100) has a feeding mechanism (400) positioned above the winding mechanism (300), the feeding mechanism (400) comprising: Vertical panel (470); A sliding groove (410) is provided on the vertical plate (470); The limiting plate (420) is located directly above the winding mechanism (300), and its two ends slide up and down in the sliding groove (410), and are attached to the material body (120) wound on the winding mechanism (300) to detect the roll thickness of the material body (120); The limiting sleeve (430) slides up and down on the upright plate (470). The limiting sleeve (430) is provided with a height adjustment structure (440) to limit the highest point of the upward sliding of the limiting plate (420). When the winding mechanism (300) winds up, the material body (120) pushes the limiting plate (420) upward. By detecting the height of the limiting plate (420), the thickness of the material body (120) can be monitored in real time. By limiting the highest point of the sliding of the limiting plate (420), the roll diameter of the material body (120) can be controlled when it is rolled up.

2. The feeding device for an automatic rewinding machine according to claim 1, characterized in that, The feeding mechanism (200) includes: The first motor (210) is mounted on the main frame (100); A rotating seat (220) is mounted on the main frame (100); The first fixed seat (230) has two configurations, one of which is coaxially fixedly connected to the output shaft of the first motor (210), and the other is rotatably configured in the rotating seat (220); The first fixing slot (240) is provided on one side of the two first fixing seats (230) that are close to each other; The first fixed roller (250) is disposed in the first fixed groove (240); The feeding roller (260) is fitted at both ends onto the first fixed roller (250) on both sides.

3. The feeding device for an automatic rewinding machine according to claim 2, characterized in that, The winding mechanism (300) includes: A horizontal plate (301) is fixedly connected to the main frame (100), and an installation groove (302) is provided on the upper surface of the horizontal plate (301). The second motor (310) is fixedly mounted on the main frame (100); The slider (370) is horizontally slidably disposed within the mounting groove (302); Two rotating shafts (320) are provided, one of which is rotatably located inside the slider (370), and the other of which is coaxially fixedly connected to the second motor (310). The second fixed seat (330) is fixedly mounted on the rotating shaft (320); The second fixing slot (340) is provided on one side of the two second fixing seats (330) that are close to each other; The second fixed roller (350) is disposed inside the second fixed groove (340); The take-up roller (360) is fitted at both ends onto two second fixed rollers (350).

4. The feeding device for an automatic rewinding machine according to claim 3, characterized in that, The bottom of the slider (370) has a through threaded hole, and a first screw (380) is used inside the threaded hole. One end of the first screw (380) passes through the vertical plate (470) and is fixedly connected to a hand crank handle (390).

5. The feeding device for an automatic rewinding machine according to claim 1, characterized in that, The main frame (100) is also provided with a tensioning mechanism (500), which includes: Rotary rod (510) is rotatably connected to the main frame (100); The second screw (540) is rotatably connected to the main frame (100) via a thread; Mounting plate (520) is fixedly connected to rotating rod (510) and second screw (540); Two tension rollers (530) are provided, with both ends of the tension rollers (530) fixedly connected to the mounting plate (520); The handwheel (550) is fixedly connected to the second screw (540).

6. The feeding device for an automatic rewinding machine according to claim 1, characterized in that, The limiting plate (420) has a through cutting groove (450), and a cutting blade (460) is fixedly connected between the two limiting sleeves (430). The cutting blade (460) slides up and down in the cutting groove (450).

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