Rewinding machine

Abstract

The utility model provides a rewinding machine. The rewinding machine comprises an unwinding unit, a roller passing unit, a winding unit and a deviation rectifying mechanism. The unwinding unit, the roller passing unit and the winding unit are sequentially arranged along a coil stock rewinding route, and the deviation rectifying mechanism comprises a deviation detecting unit. The offset detection unit comprises a distance sensor; the distance sensor is arranged at a feeding port of the roller passing unit and is close to the edge of one side of a coil stock routing path. The position of the offset detection unit is fixed in advance, and then a standard coil stock edge distance is set; the rewinding machine is started, position detection is carried out on a coil stock discharged from a mother coil on an unwinding unit through a distance sensor, at the moment, when the coil stock enters a feeding port of a roller passing unit along a coil stock routing path, the distance sensor collects the position of the distance sensor on the edge of one side of the coil stock, and when it is detected that the edge distance of the coil stock is larger than a preset threshold value, the rewinding machine is started. And at the moment, the unwinding mechanism is moved to achieve deviation correction, and the problem of roll breakage caused by roll material deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rewinding machines, in particular to the field of rewinding detection of rewinding machines. Background Art

[0002] The rewinder is a special equipment used to rewind rolls of paper, mica tape, film, lithium battery electrodes, etc. It can be divided into a unwinding unit, a roller unit and a rewinding unit. The whole process can be divided into unwinding the material from the mother roll set on the unwinding unit, and the roll enters the roller unit through the feed port of the roller unit; then the roll passes through multiple rollers in the roller unit, is transmitted and flattened; and then enters the rewinding unit at the discharge port of the roller unit to rewind the material, thereby realizing the rewinding and packaging of the roll.

[0003] During the unwinding process, it is necessary to ensure that the position of the coil during unwinding is relatively fixed with the position of the coil during rewinding, otherwise the rewound product will be defective, and in severe cases, it will cause the coil to break. Summary of the invention

[0004] Based on this, the purpose of the utility model is to provide a rewinding machine, which includes an unwinding unit, a roller unit, a rewinding unit and a deviation correction mechanism.

[0005] The unwinding unit, the roller unit, and the winding unit are arranged in sequence along the coil rewinding route;

[0006] The deviation correction mechanism includes a deviation detection unit;

[0007] The offset detection unit includes a distance sensor;

[0008] The distance sensor is arranged at the feed port of the roller unit and is close to one side edge of the coil routing path.

[0009] The utility model fixes the position of the deviation detection unit in advance, and then sets a standard coil edge distance; starts the rewinder, and detects the position of the coil after unwinding from the mother roll on the unwinding unit through the distance sensor. At this time, when the coil enters the feed port of the roller unit along the coil routing path, the distance sensor collects the position of the distance sensor at the edge of one side of the coil. When it is detected that the coil edge distance is greater than a preset threshold value, the unwinding mechanism can be manually moved to achieve deviation correction, thereby avoiding the problem of coil breakage caused by coil deviation.

[0010] Furthermore, the deviation correction mechanism also includes a deviation correction unit and a controller;

[0011] The controller outputs a control signal according to the web edge distance detected by the distance sensor to control the deviation correction unit to correct the relative position between the web and the distance sensor.

[0012] The controller outputs different voltages to the offset correction unit according to or obtains the size of the offset detected by the distance sensor, so that the offset correction unit drives the unwinding unit to move as a whole, so that the coiled material released from the mother roll can be in a certain position when entering the feed port of the roller unit, ensuring that the position of the coiled material is fixed when the winding unit is winding, so that the final product after winding is neatly wound and the yield is improved.

[0013] Further, the offset correction unit includes a first bracket, a second bracket, a first guide rail group, a second guide rail group, a first unwinding chassis, a second unwinding chassis, a connecting rod and an electric cylinder;

[0014] The first guide rail group is arranged on the first bracket, and the first unwinding chassis is slidably arranged on the first guide rail group;

[0015] The second guide rail group is arranged on the second bracket, and the second unwinding chassis is slidably arranged on the second guide rail group;

[0016] A bottom of one side of the unwinding unit is arranged on the first unwinding chassis, and a bottom of the other side of the unwinding unit is arranged on the second unwinding chassis;

[0017] One end of the connecting rod is connected to the first bracket, and the other end is connected to the second bracket;

[0018] The electric cylinder is fixedly arranged on the connecting rod, and one movable end of the electric cylinder is connected to the first unwinding chassis.

[0019] Furthermore, the offset detection unit also includes a first box, a fixing frame, a screw rod and a pitch adjustment knob;

[0020] The distance sensor, the fixing bracket, the screw rod, and the distance adjustment knob are contained in the first housing.

[0021] The distance sensor is fixed on the fixing frame.

[0022] The fixing frame is installed on the screw rod;

[0023] The lead screw is connected to the pitch adjustment knob through a through hole on the first box body.

[0024] By setting up the first box body and multiple components, the distance sensor becomes movable. For materials of different widths, the distance sensor can be moved to the corresponding edge of the coil by simply controlling the push and pull of the screw rod through the distance adjustment knob, thereby improving the adaptability of the rewinder and the adjustment efficiency of the rewinder.

[0025] Further, the offset detection unit includes two distance sensors, and the two distance sensors are respectively arranged in the first box body through a fixing frame, a screw rod and a distance adjustment knob;

[0026] The two distance sensors are respectively arranged at the two side edges of the coil routing path.

[0027] The wrinkle phenomenon of the coil in the mother roll cannot be judged by the distance sensor set on one side, but if distance sensors are set on both sides of the coil routing path, when the distance sensor on one side is normal and the distance sensor on the other side is abnormal, the wrinkle problem of the coil can be exposed, so that the yield of the product after rewinding is higher, and the industrial material utilization rate is improved.

[0028] Furthermore, the offset detection unit further includes a transmission mechanism, and the transmission mechanism is used to control the movement of the first box;

[0029] The transmission mechanism comprises a second box body, a moving rod and a control knob, wherein the moving rod is connected to the control knob through a through hole on the second box body;

[0030] The first box is connected to the moving rod.

[0031] Furthermore, the distance sensor is an ultrasonic sensor, or an optical detection sensor.

[0032] The utility model first sets an offset detection unit at the feed port of the roller unit, moves the detection position of the distance sensor to the side edge of the coil material routing path through the distance adjustment knob, and sets a standard coil material edge distance, then the distance sensor detects the position of the coil material after unwinding from the mother roll on the unwinding unit, when the coil material enters the feed port of the roller unit along the coil material routing path, the distance sensor can collect the position of the distance sensor on the side edge of the coil material, and then according to the set standard coil material edge distance, when the real-time coil material edge distance is greater than a preset threshold, the controller obtains the real-time coil material edge distance and outputs a control voltage according to the distance, and moves the unwinding unit according to the control voltage to adjust the offset correction unit, and stops moving when the moving position makes the real-time coil material edge distance detected by the unwinding unit not exceed the preset threshold. At this time, the position of the coil material entering the feed port is consistent with the standard position, and automatic deviation correction is achieved through this setting, which improves the utilization rate of raw materials, industrial production efficiency and reduces the product defect rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an overall structural diagram of a rewinding machine of the utility model;

[0034] Figure 2 for Figure 1 A right side view of a rewinding machine shown;

[0035] Figure 3 It is a structural schematic diagram of the offset detection unit of the utility model;

[0036] Figure 4 It is a structural schematic diagram of the offset correction unit of the utility model.

[0037] Description of the drawings: 1: unwinding unit; 2: roller unit; 3: winding unit; 4: deviation correction mechanism; 41: offset detection unit; 411: distance sensor; 412: first box; 413: fixed frame; 414: screw rod; 415: distance adjustment knob; 416: second box; 417: moving rod; 418: control knob; 42: offset correction unit; 421: first bracket; 422: second bracket; 423: first guide rail group; 424: second guide rail group; 425: first unwinding chassis; 426: second unwinding chassis; 427: connecting rod; 428: electric cylinder. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0041] In the actual rewinding process, the rewinder usually needs to divide a mother roll with multiple layers of coils into multiple coil products. Before the rewinding starts, the coil needs to be manually fed into the feed port of the roller unit, and then the coil is routed along the preset routing path in the roller unit, and then extended from the discharge port of the roller unit and fixed to the reel of the rewinding unit. At this time, rewinding can begin. However, during the production process of the mother roll, the winding process of the mother roll may cause the coil to shift during winding, or the position of the mother roll is not completely aligned with the coil port of the roller unit when the mother roll is installed on the unwinding unit of the rewinder; then with the start of rewinding, when the coil on the mother roll reaches the feed port, the coil position shifts from the initial position; this shift will reduce the material yield after rewinding, and on the other hand, the shift of the coil may cause additional tension outside the direction of the coil rewinding, and this tension will increase with the increase of the offset. When the offset is too large, the roll may break. In order to avoid the above problems, the inventor added a correction mechanism to the rewinding machine. By adding a distance sensor at the feed port, the edge distance between the coil and the distance sensor is detected in real time, and whether the rewinding can continue is determined based on the edge distance.

[0042] See also Figure 1 The utility model provides a rewinding machine, which includes an unwinding unit 1, a roller unit 2, a rewinding unit 3 and a deviation correction mechanism 4.

[0043] Among them, the unwinding unit 1, the roller unit 2, and the winding unit 3 are arranged in sequence along the coil rewinding route; the reel of the unwinding unit 1 is opposite to the feed port side of the roller unit 2, and the discharge port side of the roller unit 2 is opposite to the reel of the winding unit 3.

[0044] See also Figure 2 , Figure 2 for Figure 1 The right side view of a rewinding machine is shown. The deviation correction mechanism 4 includes a deviation detection unit 41; the deviation detection unit 41 includes a distance sensor 411.

[0045] The distance sensor is arranged at the feed port of the roller unit and is close to one side edge of the coil routing path.

[0046] The distance sensor 411 includes multiple types, such as an ultrasonic sensor or an optical sensor. In the present invention, an ultrasonic sensor is used for explanation.

[0047] The ultrasonic sensor includes two signal ends. One signal end releases ultrasound, and the other signal end receives the reflected signal. The distance between the edge and the sensor is determined based on the reflection time.

[0048] The position of the distance sensor 411 is fixed in advance, and then a standard coil edge distance is set, and the rewinder is started. At this time, when the coil enters the feed port of the roller unit 2 along the coil routing path, the distance sensor 411 can collect the position of the distance sensor 411 on one side of the coil. When it is detected that the coil edge distance is greater than a preset threshold, it means that the coil is seriously offset, so the rewinder is stopped, and the parent roll is moved manually to achieve deviation correction.

[0049] Furthermore, the offset detection unit 41 also includes a first box body 412, a fixing frame 413, a screw rod 414 and a distance adjustment knob 415; the distance sensor, the fixing frame, the screw rod and the distance adjustment knob are accommodated in the first box body, the distance sensor 411 is fixed on the fixing frame 413, and the fixing frame 413 is installed on the screw rod 414; the screw rod 414 is connected to a distance adjustment knob 415 through a through hole on the first box body 412.

[0050] The first box body 412 provides a fixed space for the distance sensor 411, the fixing frame 413, the screw rod 414 and the distance adjustment knob 415. The distance sensor 411 is set to an adjustable state by setting the distance adjustment knob 415, the screw rod 414 and the fixing frame 413. For different types of coils, the coil widths are not necessarily the same, but through the above structure, the distance sensor 411 can be moved to the corresponding coil edge by controlling the push and pull of the screw rod 414 through the distance adjustment knob 415, thereby improving the adaptability of the rewinding machine.

[0051] In another preferred embodiment, the offset detection unit 41 includes two distance sensors 411, and the two distance sensors 411 are respectively arranged in the first box 412 through a fixing frame 413 and a screw rod 414; the two distance sensors 411 are respectively arranged on the two side edges of the coil routing path.

[0052] When the coil material in the mother roll is wrinkled, it cannot be judged by only using the distance sensor 411 set on one side. Therefore, by setting the distance sensors 411 on both sides of the coil material routing path, when the distance sensor 411 on one side is normal and the distance sensor 411 on the other side is abnormal, the wrinkle problem of the coil material can be exposed, so that the yield of the product after rewinding is higher, and the industrial material utilization rate is improved.

[0053] Furthermore, the offset detection unit 41 also includes a transmission mechanism, which is used to control the movement of the first box body 412; the transmission mechanism includes a second box body 416, a moving rod 417 and a control knob 418, the second box body 416 is arranged on the moving rod, and the moving rod 417 is connected to the control knob 418; the first box body 412 is arranged on the second box body 416.

[0054] When rewinding coils of the same width, there will be multiple mother rolls that need to be rewound in batches. In the process of replacing the mother rolls, the placement of the mother rolls may shift. At this time, if the distance sensor is adjusted to align with the two side edges of the coil, it is time-consuming. Considering that the width of the coil is consistent, a transmission mechanism is added to connect with the first box body, and the moving rod is pushed by the control knob of the transmission mechanism. The first box body moves as a whole. At this time, only one distance sensor needs to be aligned with one side edge of the coil to meet the alignment of the two side edges, thereby improving the preset efficiency of the rewinder.

[0055] After the offset detection is completed, the position of the mother roll is usually adjusted manually, but the mother roll used for rewinding is heavy, and it is inefficient to remove it from the unwinding unit every time it deviates; therefore, the inventors have added an offset correction unit and a controller on the basis of the above embodiment. The offset correction unit is set at the bottom of the unwinding unit; the controller controls the offset correction unit to drive the unwinding unit to move as a whole according to the size of the offset detected by the distance sensor. The specific scheme is as follows:

[0056] The deviation correction mechanism 4 further includes a deviation correction unit 42 and a controller (not shown).

[0057] The controller outputs a control signal according to the web edge distance detected by the distance sensor 411 to control the offset correction unit 42 to correct the relative position between the web and the distance sensor 411 .

[0058] The controller outputs a control signal to the offset correction unit 42 according to the acquired edge distance of the coil detected by the distance sensor 411, so that the offset correction unit drives the unwinding unit 1 to move as a whole, so that the coil released from the mother roll can be in a certain position when entering the feed port of the roller unit 2, ensuring that the position of the coil is fixed when the winding unit 3 is winding. The final product after winding is neatly wound and the yield is improved.

[0059] When the offset detection unit includes two sensors, the controller will obtain the roll edge distance of the two sensors. When the roll edge distance of the two sensors is greater than the preset threshold, the offset correction unit 42 is controlled to correct the relative position of the roll and the distance sensor 411. When the roll edge distance of only one side of the sensors is greater than the preset threshold, the controller will issue a warning or prompt to avoid wrinkles in the roll material and affect the quality of the finished product.

[0060] The offset correction unit 42 includes a first bracket 421, a second bracket 422, a first guide rail group 423, a second guide rail group 424, a first unwinding frame 425, a second unwinding frame 426, a connecting rod 427 and an electric cylinder 428; the first guide rail group 423 is arranged on the first bracket 421, and the first unwinding frame 425 is slidably arranged on the first guide rail group 423; the second guide rail group 424 is arranged on the second bracket 422, and the second unwinding frame 426 is slidably arranged on the second guide rail group 424; the bottom of one side of the unwinding unit is arranged on the first unwinding frame, and the bottom of the other side of the unwinding unit is arranged on the second unwinding frame; one end of the connecting rod 427 is connected to the first bracket 421, and the other end is connected to the second bracket 422; the electric cylinder 428 is fixedly arranged on the connecting rod, and one end of the electric cylinder 48 can be moved to connect with the first unwinding frame 425.

[0061] After the distance sensor 411 detects that the coil has a large offset, the controller will issue a prompt or warning to remind the site that the parent roll needs to be adjusted; however, in the actual production process, the unwinding unit uses a top cone to fix the parent roll. If the position of the parent roll is to be changed, the parent roll needs to be put down or the unwinding unit needs to be manually pushed, which reduces production efficiency. Based on this, the utility model also installs an offset correction unit under the unwinding unit, and the two side brackets of the unwinding unit are respectively installed on the first unwinding chassis and the second unwinding chassis. After detecting the offset detected by the distance sensor 411, the controller outputs a corresponding control signal to start the electric cylinder, which is composed of a servo motor and a screw rod. The movable end of the screw rod is connected to the first unwinding chassis. When the servo motor is started, the screw rod is pushed out or pulled back in a straight line. Since the first unwinding chassis can be slidably arranged on the first guide rail group, the first unwinding chassis is driven to slide on the first guide rail group, so that the unwinding unit completes the movement as a whole to achieve the alignment of the coil, and ensures that the relative position of the coil is fixed during the rewinding process.

[0062] The utility model first sets an offset detection unit 41 at the feed port of the roller unit 2, moves the detection position of the distance sensor 411 to the side edge of the coil material routing path through the distance adjustment knob 415, and sets a standard coil material edge distance, then the distance sensor 411 detects the position of the coil material after unwinding from the mother roll on the unwinding unit 1, when the coil material enters the feed port of the roller unit 2 along the coil material routing path, the distance sensor 411 can collect the position of the distance sensor 411 on the side edge of the coil material, and then according to the set standard coil material edge distance, when the real-time coil material edge distance is greater than a preset threshold, the controller obtains the real-time coil material edge distance and outputs a control voltage according to the distance, and moves the unwinding unit according to the control voltage to adjust the offset correction unit 42, and stops moving when the moving position makes the real-time coil material edge distance detected by the unwinding unit 1 not exceed the preset threshold. At this time, the position of the coil material entering the feed port is consistent with the standard position, and automatic deviation correction is realized through this setting, which improves the utilization rate of raw materials, industrial production efficiency and reduces the product defect rate.

[0063] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A rewinding machine, characterized in that: It includes an unwinding unit, a roller unit, a winding unit, and a deviation correction mechanism which are sequentially arranged along the coil rewinding route; The deviation correction mechanism includes a deviation detection unit; The offset detection unit includes a distance sensor; The distance sensor is arranged at the feed port of the roller unit and close to one side edge of the coil routing path to detect whether the coil is offset.

2. A rewinding machine according to claim 1, characterized in that: The deviation correction mechanism also includes a deviation correction unit and a controller; the controller outputs a control signal according to the edge distance of the coil detected by the distance sensor to control the deviation correction unit to correct the relative position of the coil and the distance sensor.

3. A rewinding machine according to claim 2, characterized in that: The offset correction unit includes a first bracket, a second bracket, a first guide rail group, a second guide rail group, a first unwinding frame, a second unwinding frame, a connecting rod and an electric cylinder; the first guide rail group is arranged on the first bracket, and the first unwinding frame is slidably arranged on the first guide rail group; the second guide rail group is arranged on the second bracket, and the second unwinding frame is slidably arranged on the second guide rail group; the bottom of the unwinding unit is arranged on the first unwinding frame and the second unwinding frame; the connecting rod connects the first bracket and the second bracket; the electric cylinder is fixedly arranged on the connecting rod, and one movable end of the electric cylinder is connected to the first unwinding frame.

4. A rewinding machine according to claim 3, characterized in that: The offset detection unit also includes a first box body, and a fixing frame, a screw rod and a distance adjustment knob arranged in the first box body; the fixing frame is installed on the screw rod; the distance sensor is fixed on the fixing frame, and the screw rod is connected to the distance adjustment knob through a through hole on the first box body.

5. A rewinding machine according to claim 4, characterized in that: The offset detection unit includes two distance sensors, which are respectively arranged in the first box body through a fixing frame, a screw rod and a distance adjustment knob; the two distance sensors are respectively arranged on the two side edges of the coil routing path.

6. A rewinding machine according to claim 5, characterized in that: The offset detection unit also includes a transmission mechanism for controlling the movement of the first box; the transmission mechanism includes a second box, a moving rod and a control knob, the moving rod is connected to the control knob through a through hole on the second box; the first box is connected to the moving rod.

7. A rewinding machine according to claim 6, characterized in that: The distance sensor is an ultrasonic sensor or an optical detection sensor.

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