System for controlling unwinding process of rubber strip on divider strip exiting from roll of product

Abstract

The invention relates to a system (100) for controlling the unwinding process of a rubber strip on a dividing strip exiting from a product roll, said system (100) comprising:-a product roll (102); -a conveying device (108); -a web of separator strips (110); -a detection system for receiving information about a physical environment around the system (100); and-a communication network controlling data entering the system (100) from a detection system; the system is configured such that the system detects the divider strip (106) without the rubber strip (104) or the divider strip (106) with the rubber strip (104), thereby allowing control of the product during the unwinding process.

Description

TECHNICAL FIELD

[0001] The present invention relates to the storage of a rubber strip around a product reel, the product reel being designed to wind and unwind continuously. More particularly, the present invention relates to a system for controlling the unwinding process of the rubber strip on a separating strip leaving the reel, the system forming part of a facility for manufacturing tires. BACKGROUND ART

[0002] In the field of manufacturing tires, rubber strips are designed to be stored by winding around a product reel, the product reel being mounted for rotational movement. This type of reel is used to locally store one or more semi-finished products during the assembly process, such as rubber strips on a tire.

[0003] The rubber strip is the main body of the winding and unwinding process of the product reel and comprises a conventional rubber composition for manufacturing tires (e.g., an elastomeric composition comprising natural rubber, synthetic elastomers and their combinations and equivalents). This type of rubber strip is usually non-vulcanized and thus has a high level of adhesion. Therefore, when the strip winds around itself on the product reel, it is difficult to unwind it without damaging the strip. Since non-vulcanized rubber is a material with relatively strong adhesion, it is recommended to store the rubber strip on a separating strip (or "separator strip") with weaker adhesion, thus facilitating its subsequent unwinding from the product reel. When the rubber strip unwinds from the product reel, the separating strip also unwinds.

[0004] There are already different solutions including these elements (e.g., see the facilities disclosed in patent US4,447,014 and publications EP1236669 and WO2010 / 015782). There are also solutions including winding and unwinding equipment in a facility for storing rubber strips (the rubber strips being used for processing various products for manufacturing tires) (e.g., see the applicant's applications FR1911758 and FR1911755).

[0005] It is also known to use one or more sensors (such as one or more cameras and / or other equivalent optical sensors) to detect whether a reel containing an elongated material is almost empty, so as to allow the unwinding process to be stopped and the empty reel to be replaced with a brand-new full reel. In particular, in the field of product detection based on industrial observation, there have been product detection methods that automatically detect product failures using industrial observation and model correspondence relationships (for example, see Chinese Patent CN105817430, which discloses a method for locating the coordinates of unqualified products, controlling a robotic arm to grab unqualified products through a data acquisition card, placing the unqualified products in an unqualified area, and conveying the products passing the detection to the next workstation through a production line). However, in the known detection process, the sensor is usually triggered at a late stage when the end of the first elongated material actually leaves the reel. Therefore, for a single reel at the machine inlet, the length of the separator strip is the same, but the length of the product may vary. Therefore, if there is very little product remaining on the reel, it is necessary to wait for the separator strip without product of the first section length to unwind before the product arrives, and then stop the unwinding. In addition, the unwinding speed of the reel must be kept below a critical low speed, so as to allow the workstation to stop the rotation of the reel in time and enable the operator to intervene and replace the reel under good conditions.

[0006] Therefore, the disclosed invention adopts artificial intelligence camera technology, which can check for the presence and / or absence of rubber strips on the separator strip leaving the product reel. The disclosed system is between the moment when the product leaves the reel and the moment when the product is separated from its separator strip, so it can automatically stop the unwinding of the product reel by detecting the arrival of the product. In addition, the operator can also be freed from the work of just waiting to see the product arrive to stop the unwinding of the reel. Summary of the Invention

[0007] The present invention relates to a system for controlling the unwinding process of a rubber strip on a separator strip leaving a product reel, characterized in that the system comprises:

[0008] - A product reel, which is generally cylindrical and is designed to wind a product formed by a rubber strip and a separator strip carrying the rubber strip;

[0009] - A conveying device, during the unwinding process, the conveying device conveys the rubber strip leaving the product reel to a downstream supply facility;

[0010] - A separator strip reel, which is generally cylindrical, during the unwinding process, the separator strip leaving the product reel winds around the separator strip reel, and the separator strip reel is installed to be rotatable and movable relative to the product reel;

[0011] - A detection system, the detection system is used to receive information about the physical environment around the system; and

[0012] - A communication network that controls the data entering the system from the detection system and includes at least one communication server that can execute programming instructions stored in the memory of one or more processors of the system to implement an unwinding process including the following steps:

[0013] - A step of rotating the product reel in the unwinding direction, in which the product enters the field of view of the camera of the detection system;

[0014] - A step of moving the product in the field of view of the camera, in which the camera is between the product leaving the product reel and the rubber strip separating from its separating strip;

[0015] - A step of detecting the arrival of the product, in which the camera detects the separating strip in the field of view; and

[0016] - A final step of stopping the product reel, where the image taken by the camera includes the rubber strip on the separating strip, which triggers a stop instruction sent by the system to the product reel.

[0017] In certain embodiments of the system of the present invention, the system includes an unwinding area that includes a conveying device and a separating strip reel, where the product reel is located at the starting point of the unwinding process.

[0018] In certain embodiments of the system of the present invention, the detection step of the unwinding process performed by the system includes the following steps:

[0019] - A step of taking an image of the product, in which the camera takes an image of the product during the unwinding process, enabling the system to learn; and

[0020] - A step of generating a model on the image obtained in the step of taking an image of the product, in which the taken image is marked according to whether there is a rubber strip on the separating strip,

[0021] such that when there is a rubber strip in the taken image, the system issues an instruction to stop the product reel.

[0022] In certain embodiments of the system of the present invention, the product reel is mounted to be rotatably movable relative to the conveying device and relative to the separating strip reel.

[0023] In certain embodiments of the system of the present invention, the system further includes one or more tension devices that ensure the tension of the separating strip is maintained throughout the unwinding process.

[0024] In certain embodiments of the system of the present invention, the system further includes a motor that rotates the product reel during the unwinding process.

[0025] In certain embodiments of the system of the present invention, the camera is selected from two-dimensional and / or three-dimensional detection systems, 3-D depth detection systems, and artificial vision systems.

[0026] In certain embodiments of the system of the present invention, during the detection step of the unwinding process performed by the system, the camera is triggered when the identification segment of the product separator strip enters the field of view of the camera.

[0027] In certain embodiments of the system of the present invention, the data in the input system includes general information about the identified product.

[0028] The present invention also relates to a facility for producing tires, the facility including the disclosed system.

[0029] Other aspects of the present invention will become apparent from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The nature and various advantages of the present invention will become more apparent by reading the following detailed description and the accompanying drawings, in which like reference numerals represent all like parts, wherein:

[0031] Figure 1 Figure 1 A schematic view showing an embodiment of the system of the present invention, the system controlling the unwinding process of the rubber strip on the separator strip exiting the product reel.

[0032] Figure 2 Figure 2 Showing a view of the movement of the separator strip without a rubber strip during the unwinding process performed by the Figure 1 system.

[0033] Figure 3 Figure 3 Showing a view of the movement of the separator strip with a rubber strip during the unwinding process performed by the Figure 1 system. DETAILED DESCRIPTION

[0034] Referring to the accompanying drawings, in which like reference numerals represent like elements, Figure 1 A schematic view showing an embodiment of the control system (or "system") 100 of the present invention, the control system 100 controlling the unwinding process of the rubber strip on the separator strip exiting the product reel. The system 100 forms part of a facility for producing tires.

[0035] ​​​​​​The system 100 includes at least one product reel 102, which is generally cylindrical in shape and is designed to wind a rubber strip (or "strip") 104 and a separator strip (or "separator") 106 that carries the rubber strip (the rubber strip 104 and the separator strip 106 together form the "product"). The system 100 also includes a conveying device 108 (e.g., a conveyor belt or an equivalent known conveying device), which, during the unwinding process, conveys the rubber strip 104 leaving the product reel 102 to a supply facility (not shown). The system 100 further includes a separator reel 110, which receives the separator strip 106 leaving the product reel 102 during the unwinding process. The separator reel 110 (which is generally cylindrical in shape and around which the separator strip 106 is wound) is mounted to be rotatably movable relative to the product reel 102. The system 100 may include one or more tension devices 112, which ensure that the tension of the separator strip 106 is maintained throughout the unwinding process.

[0036] The product reel 102 is mounted to be rotatably movable relative to the conveying device 108 and relative to the separator reel 110. For example, the reel may be mounted to be rotatably movable relative to a reel shaft of a frame or an equivalent known support (not shown). The product reel 102 may also be mounted to be translatably movable relative to the conveying device 108 and the separator reel 110, thereby allowing it to be positioned according to the characteristics of the rubber strip 104 and / or the separator strip 106. The product reel 102 may also be fixed to a rotating arm (not shown), which is displaced in response to a jack (which can be driven by a hydraulic or pneumatic device or an equivalent device) or by one or more equivalent drives. During the unwinding process performed by the system 100, the rotation range of the rotating arm can maintain the position of the product reel 102 relative to the conveying device 108 and the separator reel 110.

[0037] During the winding and unwinding processes performed by the product reel, a motor (not shown) causes the product reel 102 to rotate in two directions (the winding direction and the unwinding direction of the product). As Figure 1 shown, the unwinding direction of the product reel 102 is indicated by arrow A.

[0038] Referring again to Figure 1 , the system 100 includes a detection system, which is used to receive information about the physical environment around the system. The detection system includes one or more sensors, which are configured to perform image detection. Each sensor may include, for example, as Figure 1One or more cameras 120 as shown (it should be understood that the terms "sensor" and "camera" may be used interchangeably). In some embodiments of system 100, these sensors can form part of an overall detection system that uses these sensors together with one or more sensors located in the physical environment in which system 100 operates. In some embodiments of system 100, two or more cameras can be oriented to obtain a predetermined overlap between the fields of view of the cameras.

[0039] Those skilled in the art will recognize that many image processing techniques can be used to select and determine the parameters of the separator strip and the rubber strip. Many commercially available image processing systems can be used. For example, camera 120 can be selected from two-dimensional (2-D) and / or three-dimensional (3-D) detection systems, 3-D depth detection systems, and / or other types that detect the physical environment around product reel 102.

[0040] It can be understood that one or more cameras can include one or more programming modes, including through learning, to provide, modify, and drive at least one neural network. Although typically described here as using one or more neural networks (such as convolutional neural networks, or CNNs) as machine learning models, other types of machine learning models can also be used. The neural network can be formed with ground truth data that is generated using sensor data representing the movement of product reel 102 (including the positioning of product reel 102 relative to conveyor 108 and / or separator reel 110). These types of cameras can be selected from commercially available devices (e.g., selected from the artificial vision systems sold by Keyence Corporation and their equivalents).

[0041] In Figure 1 In embodiments of system 100 of the type shown, the sensors of the detection system can be fixed to the ceiling, wall, floor, or any support that allows the unwinding process to be carried out. It can be understood that one or more sensors can be fixed to a mobile robot. "Mobile" means that the robot can move by means of an integrated mobile device (such as one or more integrated motors) or by means of a non-integrated mobile device (such as one or more movable devices, including autonomous movable devices). It can be understood that this type of robot can be a conventional industrial robot or a collaborative robot, or a delta robot or a wired robot.

[0042] In some embodiments of system 100, the detection system of system 100 can further include a movement capture device selected from infrared sensors, ultrasonic sensors, accelerometers, gyroscopes, pressure sensors, and / or equivalent devices. In these embodiments, system 100 learns the movements performed by capturing product images without operator intervention during the unwinding process.

[0043] Referring again to Figure 1 and Figure 2 and Figure 3 , when the recognition section of the separator strip 106 of the product enters the field of view 120a of the camera, the camera 120 is triggered (see Figure 2 the arrow B indicating the unwinding direction of the product). When a part of the separator strip 106 is not visible in the image obtained by the detection system of the system 100, the fixed point can be placed at a known position relative to the camera 120 (e.g., a known horizontal distance and a known vertical distance relative to the camera position). As Figure 2 shown, the detection system of the system 100 detects the absence of a rubber strip in its field of view 120a.

[0044] Referring again to Figures 1 to 3 , the detection system of the system 100 detects the presence of a rubber strip 104 on the separator strip 106 (e.g., in the field of view 120a of the camera 120), thereby triggering it to capture a positioning image of the rubber strip 104 relative to the unwound separator strip 106 (see Figure 3 the arrow B). In all embodiments of the system 100, the system "searches" for the presence of a rubber strip 104 "seen" by the camera 120 in the image obtained by the detection system. If no rubber strip is detected (as Figure 2 shown), the detection system continues to acquire images until the search for the product is exhausted.

[0045] In order to well control the stop of the product reel 102 during unwinding to ensure clear shooting of the product image, it is necessary to identify the unwinding product and detect the positioning of the relevant rubber strip. Therefore, the detection data refers to multiple records representing the positioning of the rubber strip tracked over a period of time relative to the identified separator strip (or a part of the identified separator strip). For example, the detection data can include: one or more positions from the records of the positions of reference points on a part of the separator strip 106 over time or at regular time intervals; sensor data captured over time; a video stream processed by computer viewing techniques; and / or data indicating the operating state of the product reel 102 over time. In some cases, the detection data can include data representing one or more continuous rotational movements of the product reel 102 before its stop in order to capture one or more images of the unwinding product. Therefore, the detection system is configured to generate movement data of the product reel 102. In these embodiments, the system 100 learns the movements performed during the process of taking images of the product (a separator strip without a rubber strip, as Figure 2 shown, or a separator strip with a rubber strip, as Figure 3 shown) without operator intervention during the unwinding process.

[0046] To implement the unwinding process, the system 100 includes a communication network (or "network") that controls data input into the system from various sources (e.g., from at least one product reel 102 and / or at least one camera 120). The communication network includes one or more communication servers (or "servers"), each server including one or more processors operatively connected to a memory. The memory is configured to store an analysis application for imaging products and the positioning of the rubber strips captured therein. One or more processors include an analysis application execution module for image processing, and one or more of its processors can execute the programming instructions stored in the memory to perform the steps of the unwinding process (described below).

[0047] The data input into the system 100 may include general information about the identified product. The general information includes data stored about the characteristics of the rubber strip 104 on the separator strip 106 (including but not limited to its composition, its production source, its production date, the tire including the rubber strip 104, etc.).

[0048] The term "processor" (alternatively, the term "programmable logic circuit") refers to one or more devices that can process and analyze data, and includes one or more types of software for processing data (e.g., one or more integrated circuits, one or more application-specific integrated circuits, one or more neural networks, and / or one or more other known equivalent programmable circuits included in a computer, one or more controllers, one or more microcontrollers, one or more microcomputers, one or more programmable automata (or "PLCs") known to those skilled in the art). The processor includes one or more types of software for processing data captured by the detection system (including the camera 120) of the system 100 (and the corresponding data obtained), and one or more types of software for identifying and locating differences and identifying their sources for correction.

[0049] In the system 100, the memory may include volatile storage devices and non-volatile storage devices. The non-volatile memory may include solid-state memory such as NAND flash memory, a "wear correction factor" memory (or KAM) for saving various operating variables when the processor is turned off, magnetic and optical storage supports, or any other suitable data storage device that retains data when the system 100 is deactivated or loses power. The volatile memory may include static and dynamic RAM for storing program instructions and data, including the learning application.

[0050] In some embodiments of the system of the present invention, the processor may configure system 100 according to one or more product parameters calculated by an image processing module included in the processor memory. The image processing module analyzes the identified product image, and more specifically, analyzes the image of the rubber strip seen by the detection system of the system 100.

[0051] Referring again to Figures 1 to 3 , a detailed description of the unwinding process performed by system 100 including a product reel is provided by way of example. This type of unwinding process is carried out during the tire production cycle by a facility, and the system 100 forms part of the facility. It will be appreciated that the unwinding process can be readily adapted to all embodiments of the tire production facility including system 100.

[0052] As used herein, the term "process" may include one or more steps performed by at least one computer system, the computer system including one or more processors for executing instructions to perform the steps. Unless otherwise specified, any order of steps is given by way of example and the described process is not limited to any particular order.

[0053] In the following description, embodiments of the unwinding process with different information accuracies obtained by a detection system (such as camera 120) are described.

[0054] At the start of the unwinding process, the product reel 102 is located in the unwinding area including the conveying device 108 and the separator strip reel 110. At this stage, the product reel 102 is full (i.e., the product including the rubber strip 104 and the separator strip 106 has been wound on the product reel).

[0055] The unwinding process includes the step of rotating the product reel 102 in the unwinding direction (see the arrow A in Figure 1 ). In this step, the product enters the field of view 120a of the camera 120 (see Figure 1 and Figure 2 ).

[0056] The unwinding process also includes the step of moving the product in the field of view 120a of the camera (see the arrow B in Figure 2 and Figure 3 ). In this step, the camera 120 detects the arrival of the product between the product leaving the product reel 102 and the rubber strip 104 separating from its separator strip 106, regardless of whether there is no rubber strip 104 on the separator strip 106 (see Figure 2 ) or there is a rubber strip 104 (see Figure 3 ).

[0057] The unwinding process further includes a step of detecting the arrival of the product, during which the camera 120 detects whether there is a separating strip in the field of view 120a of the camera. In this step, when the camera 120 detects that there is no rubber strip 104 on the separating strip 106, the product reel 102 continues to unwind, thereby allowing the separating strip 106 to be correspondingly wound on the separating strip reel 110 (see the arrow C in Figure 1 ). In this step, when the camera 120 detects that there is a rubber strip 104 on the separating strip 106, the system issues an instruction to stop the product reel 102.

[0058] In the detection step of the unwinding process, the camera 120 captures an image of the product during the unwinding process for the system 100 to learn. A model is then generated and utilized on new images. For example, if there is a separating strip without a product in the image, the captured image can be marked as "NOK", which does not trigger any instruction for the product reel 102. For example, if there is a rubber strip on the separating strip in the image, the captured image can be marked as "OK", which will trigger the system 100 to send a stop instruction to the product reel 102. Using the learning of new images in the current operation enables the checking of the presence and / or absence of the rubber strip 104 (and thus the automatic checking of the stop of the product reel 102). In this way, the learning is not fixed in time, allowing the system 100 to adapt to the rubber strips (including their rubber composition) and the separating strips.

[0059] The processor can also consult a reference (such as a parameter table of the separating strip and / or known rubber strips) to finally determine one or more parameters, so as to predict the stop of the product reel 102 during the unwinding process. For example, after the image processing module calculates one or more parameters of the identified product, the processor can compare the calculated parameters with the known parameters recorded in the reference. The processor can retrieve the parameters of the known product closest to the calculated parameters to configure the product reel 102 (so as to position it precisely for the unwinding of the product).

[0060] In one embodiment of the unwinding process performed by the system 100, the unwinding process further includes an optional step of positioning the camera 120 at a predetermined reference distance relative to the surface of the identified product. In this step, the camera 120 is centered relative to the surface of the product that moves (which is right / left positioned). For this purpose, the camera 120 is placed at a position that allows the camera to see all possible sizes (including length and width) of the separating strip. Then the camera 120 performs a scan and then an analysis to verify whether the camera 120 is well positioned. Once the scan is completed, it enters the learning phase to establish the parameters for the neural network. This learning phase is only performed once to establish the parameters of the neural network, and then the neural network can be used for new images.

[0061] The unwinding process includes the final step of stopping the product reel 102. In this step, the product reel 102 automatically stops according to the instructions received in the previous step, thus ensuring the control of the product during the winding process. Then, the rubber strip 104 is separated from the separator strip 106 for use in downstream tire production.

[0062] The system 100 (and / or the facility including the system) may include pre-programming of control information. For example, process regulation may be associated with the parameters of the typical physical environment in which the system 100 operates. In some embodiments of the present invention, the system 100 (and / or the facility including the system) may receive voice instructions or other audio data, such as voice instructions or audio data representing the steps or stops of unwinding and / or loading / unloading of the product reel 102. Demands may be made, including demands for the current state of the ongoing unwinding process. The generated response may be represented in an auditory, visual, tactile (e.g., using a tactile interface), and / or virtual and / or augmented manner. Such reactions associated with the corresponding data may be recorded in at least one neural network.

[0063] The monitoring system may implement all embodiments of the system 100. At least a part of the monitoring system may be provided in a portable device, such as a mobile network device (e.g., a mobile phone, a laptop, one or more portable devices connected to the network (including "augmented reality" and / or "virtual reality" devices), wearable clothing connected to the network, and / or any combination and / or any equivalent thereof).

[0064] In one embodiment, the system 100 may be trained to identify values representing separator strips and rubber strips that form part of the product wound on a known product reel 102. The system 100 may be trained to identify values representing a plurality of product reels (e.g., values of inner diameter and outer diameter), and compare them with target values (e.g., implement unwinding instructions relative to the identified product reel). Each training step performed may include a classification generated by an automatic learning method. The classification may include, but is not limited to, parameters of the selected separator strip and / or rubber strip, the duration of the unwinding process, and the expected values at the end of the ongoing process (e.g., the expected length of the rubber strip 104 before the product reel 102 stops).

[0065] The terms "at least one" and "one or more" are used interchangeably. A range expressed as "between a and b" includes the values "a" and "b".

[0066] Although specific embodiments of the disclosed apparatus have been illustrated and described, it is to be understood that various changes, additions, and modifications can be made without departing from the spirit or scope of the present disclosure. Accordingly, the scope of the described invention should not be limited except as set forth in the appended claims.

Claims

1. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product roll, characterized in that The system (100) comprises: a product reel (102) of substantially cylindrical shape designed to wind a product formed by a rubber strip (104) and a separating strip (106) carrying the rubber strip (104); a conveying device (108) which, during the unwinding process, transports the rubber strip (104) leaving the product reel (102) to a downstream supply facility; a separator strip reel (110) of substantially cylindrical shape, around which the separator strip (106) is wound when leaving the product reel (102) during unwinding, the separator strip reel (110) being mounted for rotational movement relative to the product reel (102); - a detection system for receiving information about the physical environment surrounding the system (100); and - a communication network controlling the data entering the system (100) from the detection system and comprising at least one communication server capable of executing programmed instructions stored in the memory of one or more processors of the system to implement an unwinding process comprising the following steps: - a step in which the product roll (102) rotates in the unwinding direction, during which the product enters the field of view (120a) of the camera (120) of the detection system; - a step of moving the product in the field of view (120a) of the camera (120), during which the camera (120) is interposed between the product leaving the product roll (102) and the rubber strip (104) separating from its separator (106); - a step of detecting the arrival of the product, in which the camera (120) detects the dividing strip (106) in the field of view (120a); and - a final step of stopping the product roll (102), wherein the image captured by the camera (120) includes the rubber strip (104) on the dividing strip (106), which triggers a stop command sent by the system (100) to the product roll (102).

2. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product roll according to claim 1, wherein: The system (100) includes an unwinding area including a conveyor (108) and a separator strip roll (110), wherein a product roll (102) is located at the beginning of the unwinding process.

3. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product roll according to claim 1 or claim 2, wherein: The detection step of the unwinding process includes the following steps: - a step of photographing an image of the product, in which the camera (120) photographs an image of the product during the unwinding process so that the system (100) can learn; and - a step of generating a model on the image obtained in the step of photographing the product image, in which the photographed image is marked according to the presence or absence of a rubber strip on the separator strip, When a rubber strip is present in the captured image, the system (100) issues a command to stop the product roll (102).

4. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product reel according to any one of claims 1 to 3, wherein: The product roll (102) is mounted for rotational movement relative to the conveyor (108) and relative to the separator strip roll (110).

5. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product roll according to any one of claims 1 to 4, wherein the system (100) further comprises one or more tension devices (112) which ensure that the tension of the separator strip (106) is maintained during the entire unwinding process.

6. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product roll according to any one of claims 1 to 5, the system (100) further comprising a motor which rotates the product roll (102) during the unwinding process.

7. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product reel according to any one of claims 1 to 6, wherein: The camera (120) is selected from a two-dimensional (2-D) and / or three-dimensional (3-D) detection system, a 3-D depth detection system, and an artificial vision system.

8. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product reel according to any one of claims 1 to 7, wherein: During the detection step of the unwinding process, the camera (120) is triggered when the identification segment of the product separator strip (106) enters the camera's field of view (120a).

9. A system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product reel according to any one of claims 1 to 8, wherein: The data input into the system (100) includes general information about the identified product.

10. Plant for producing tyres, comprising a system (100) for controlling the unwinding process of a rubber strip on a separator strip coming off a product reel according to any one of claims 1 to 9.

Images