Cutting device for cutting a strip of material

Abstract

A cutting device for cutting a strip-shaped material, comprising two mutually cooperating first (4, 17, 23) and second (6, 19, 25) knife elements for cutting, which first (4, 17, 23) and second (6, 19, 25) knife elements are arranged on a first (5, 18, 24) and second (7, 20, 26) knife holder, which first (5, 18, 24) and second (7, 20, 26) knife holders are mounted directly or indirectly on a frame (3), characterized by at least one vibration sensor (10, 11, 21, 22, 27, 28) for detecting vibration information, which vibration information represents a measure of vibrations generated by the interaction of the first (4, 17, 23) and second (6, 19, 25) knife elements during cutting, and a processing unit (12) configured to determine wear information characterizing a state of the first (4, 17, 23) and / or second (6, 19, 25) knife element from the vibration information, and a display unit (13) for outputting the determined wear information.

Description

Technical Field

[0001] This utility model relates to a cutting device for cutting strip materials, especially adhesive fabric strips, which includes two mutually cooperating blade elements to achieve cutting, wherein each blade element is disposed on a blade holder, and the blade holder is directly or indirectly mounted on a frame. Background Technology

[0002] Such cutting devices are used, for example, in fields such as tire manufacturing. They are used to cut strip materials, especially adhesive cord fabrics such as steel cord or textile cord. "Cutting device" refers to a variety of equipment types, mainly divided into shearing machines and slitting machines. Examples of shearing machines include: guillotine shearing machines, i.e., impact shearing devices with a vertically movable strip-shaped upper blade and a fixed strip-shaped lower blade; rotary or roller shearing machines equipped with a horizontally moving rotating circular blade and a fixed blade bar; or shearing devices using high-speed rotating saw blades. These shearing devices are used to cut individual segments from continuous strips; various such shearing devices can be found, for example, in patent document DE 20 2013 103 082 U. Slitting machines, on the other hand, are used to longitudinally divide continuous strips to form two or more slits. Typically, two cooperating circular blades are used for separating the material.

[0003] Regardless of the type of cutting equipment, its corresponding blade assembly system will inevitably experience wear. Maintenance and adjustments are required based on usage intensity and material consumption. Accurately determining the timing of maintenance, blade replacement, or adjustments during continuous production is highly challenging. In current practice, maintenance personnel check the blade assembly status according to a preset maintenance cycle, adjusting it as needed or replacing the entire blade assembly system when wear is severe. However, if production continues while adjustments or replacements are still needed, it can lead to a large number of defective products. Once intervention is confirmed, the cutting equipment must be shut down, or even the entire production line must be stopped, causing unavoidable production interruptions. Given that multiple factors, such as the number of cuts, material type, material width, and thickness, affect blade wear, a comprehensive consideration of multiple wear parameters is required, making timely detection of critical wear conditions even more difficult.

[0004] The present invention aims to provide an improved cutting device. Utility Model Content

[0005] To address the aforementioned technical problems, the cutting device of this type is equipped with: at least one vibration sensor for detecting vibration information generated by the interaction of the cutting elements during cutting; furthermore, a processing unit is provided to determine wear information characterizing the state of one or two cutting elements based on the vibration information; and a display unit is provided to output the determined wear information.

[0006] This invention is based on the following technical understanding: Each cut by a blade assembly system generates vibration, which is a detectable mechanical vibration. Research has found that as blade element wear intensifies, the vibration or vibration spectrum changes over time. Typically, misalignment due to wear or deterioration of blade element performance triggers stronger vibrations. Misalignment caused by wear requires adjustment; otherwise, it will affect cutting quality. As wear progresses, the vibration amplitude increases, manifesting as higher vibration acceleration in the blade element, blade holder, or other connected mechanical components. According to this invention, at least one vibration sensor is used to detect vibrations generated during cutting by the interaction between the blade element and the strip material. This vibration sensor provides vibration information in the form of a sensing signal reflecting these vibrations. These signals are transmitted to a processing unit, which is configured to analyze the signals based on them and determine wear information. This wear information ultimately indicates the state of the blade assembly system or blade element, indicating whether the system is cutting the required strip material or whether there is a decline in cutting quality due to initial or severe wear. This wear information determines whether maintenance intervention is required.

[0007] According to this invention, wear information is provided to maintenance personnel through a display unit, such as a monitor or indicator light, enabling them to easily assess the wear and draw corresponding conclusions. Wear information can be presented in a very simple way, such as using a color-coded display scheme similar to a traffic light system. For example, a green indicator light is displayed when the vibration recorded during a monitoring cycle or multiple vibration / spectrum events falls within the tolerance range of the cutter assembly system, indicating no wear or negligible wear. A yellow indicator light is displayed when the vibration or vibration spectrum falls within the tolerance range corresponding to acceptable wear in the cutter assembly system, serving as a warning signal. If the vibration or vibration spectrum falls into the range of increased or severe wear in the cutter assembly system, a red indicator light is displayed, serving as an alarm signal, indicating the need for immediate action. This indicator light system enables timely identification of wear conditions, facilitating preventative measures before excessive wear occurs or rapid response when abnormal wear is detected. In addition to the color-coded indicator light system, other display formats such as text prompts or symbol markings can also be used to output the corresponding wear information.

[0008] This system thus achieves quasi-continuous monitoring of cutting behavior, independent of the process itself, i.e., regardless of the equipment type—whether it is a shearing machine (and if so, the model) or a slitting machine, etc.; and independent of the material being cut, whether it is steel cord or textile cord; and independent of the material thickness. This is because only the corresponding vibration behavior is considered, which is solely caused by the cutting quality and subsequently directly dependent on the quality of the blade assembly system. Using at least one vibration sensor, cutting process data is continuously recorded, and the data is analyzed by the processing unit to output wear information of the blade assembly system. This enables real-time monitoring and communication of any potential wear, allowing for immediate intervention. The process of manual inspection of the blade assembly system by maintenance personnel, which requires shutting down the cutting device, is thus avoided. Instead, maintenance or potential blade replacement can be planned earlier based on detected wear, thereby preventing downtime of the cutting device due to blade wear during production and maintenance of high-level product quality, while also avoiding defective products.

[0009] As described above, the processing unit is used to determine wear information from vibration information, i.e., sensing signals, acquired by a vibration sensor. As a further improvement of this invention, the processing unit can be designed to determine wear information by comparing the vibration information or its derived comparison value with at least one reference value. The processing unit stores specific reference information for the type of cutting device, which can be further subdivided according to the cutting material, such as reference vibration modes or reference vibration spectra corresponding to different wear states. The processing unit is configured to compare the raw sensing signal or derived comparison value, such as vibration amplitude or vibration acceleration value, provided by the vibration sensor with predefined reference values, such as reference amplitude or reference acceleration value. Through this comparison, the system can easily determine the wear level corresponding to the detected actual vibration or vibration value and directly determine the corresponding wear information.

[0010] In addition to the actual sensor signals, one or more material parameters are preferably acquired, particularly the material's thickness, width, and type (e.g., steel cord or textile cord). These material parameters are also correlated with reference information, allowing for comparisons based on the reference information relevant to the monitoring process. Measurement data acquisition is continuous, meaning data is recorded in real-time during production and processed by a dedicated algorithm in the processing unit. During a good cutting process, when the tool assembly system is in a state of no wear or slight wear, the vibration information or signal curve provided by the vibration sensor exhibits a clear and relatively sharp profile, with relatively sharp peaks within a very narrow frequency band, only slightly distorted towards lower and higher frequencies. Conversely, the vibration information or signal curve of a moderately or severely worn tool assembly system shows stronger or more pronounced distortion or broadening, and may exhibit multiple peaks or similar characteristics at different frequencies, characterizing the corresponding tool wear. The vibration frequency is in the kilohertz range. The processing unit stores pre-calibrated reference information. If the algorithm used to process sensor signals and determine wear information is a self-learning algorithm, such as one in the form of artificial intelligence, then the algorithm can be trained based on previously recorded reference information, such as a reference signal curve, for a specific wear pattern and operating parameters. This self-learning system can autonomously evolve based on continuously acquired sensor information, thereby making the processing results increasingly accurate.

[0011] According to a particularly advantageous improvement of this invention, the processing unit is designed to determine a comparison value, particularly the average value, as comparison information based on multiple consecutive time-series vibration information records. As previously described, the cutting behavior is virtually continuously monitored and corresponding vibration information is recorded. However, it is not necessary to record the signal for each cut; instead, signal recording can be performed at set intervals, such as every 10, 50, or 100 cuts. Vibration information records from multiple consecutive cuts can be acquired during each recording, and a defined measurement value can be determined from them. The average of the measurement values ​​within this period can be used as a reference for subsequent processing. The defined measurement value is considered in the set of vibration information recorded in each period as the basis for further processing. This measurement value can be, for example, the maximum recorded vibration acceleration or the maximum amplitude value in the vibration signal. The vibration information or the measurement values ​​obtained over time, forming a corresponding set, can be characterized as a graph or curve. The processing unit then processes multiple time-series vibration information records to determine a comparison value, such as the average value or average curve. This comparison value represents comparison information used for comparison with reference information.

[0012] The reference information can be used to describe or relate to severe wear conditions that require immediate attention. If comparison information is displayed, i.e., when the current comparison value generated by the most recently recorded vibration behavior matches or exceeds the reference information, the system will issue a corresponding alarm to prompt manual intervention. If the maximum vibration acceleration in the vibration spectrum is determined as the signal information to be processed, and a comparison value is obtained accordingly, the comparison will be performed using the corresponding reference value that also characterizes vibration acceleration and is associated with the defined wear condition.

[0013] This invention can also be configured with at least first reference information and second reference information. First wear information is output based on the comparison result between the comparison value and the first reference information, and second wear information is output based on the comparison result with the second reference information. Therefore, a hierarchical information system is constructed. When the comparison reveals that the comparison information reaches or exceeds the first reference information, the system can issue a yellow light signal as a warning, for example, in a traffic light system, to trigger necessary intervention. When the comparison reveals that the comparison information reaches or exceeds the second reference information, a red light signal is issued as an alarm signal.

[0014] While a single vibration sensor is sufficient to acquire the corresponding vibration information, this device can also be configured with multiple vibration sensors located at different positions. The processing unit is designed to determine wear information based on the vibration information collected by multiple vibration sensors. These separate sensor signals are processed independently and compared with corresponding reference information to ensure redundancy. Therefore, wear detection can still be performed when one vibration sensor fails. Furthermore, the processing units can compare and evaluate the results to form a verification. Naturally, this scheme can also provide a more comprehensive data foundation to support long-term condition assessment.

[0015] As mentioned earlier, vibration is generated by the tool assembly system, i.e., the interacting tools. Therefore, it is preferable to mount a vibration sensor, or at least one of multiple vibration sensors, on the tool holder to directly acquire vibration behavior at the vibration source. However, it is also possible to place the vibration sensor, or at least one of multiple sensors, on the frame. As stated above, since the tool holder is always mechanically connected to the frame, the vibration generated by the tools will inevitably be transmitted to the frame, and can therefore be detected by a vibration sensor on the frame.

[0016] As described above, the cutting device can be implemented in various types. One type is a guillotine shear, also known as a swing-arm shear. In this type, the first blade element is an upper blade mounted on a first blade holder, and the second blade element is a lower blade mounted on a frame carrier, which is fixed in position as a second blade holder. In this type, a vibration sensor or one of multiple vibration sensors is located at any of the following positions: on the first blade holder, at the blade holder guide rail of the frame (i.e., the upper blade area), or on the frame carrier (i.e., the lower blade area). The frame carrier can also be a worktable for conveying strip material to the blade assembly system.

[0017] In this improved design, at least one first vibration sensor can be installed on the first tool holder or tool holder guide rail, and at least one second vibration sensor can be installed on the frame carrier. Thus, the two vibration sensors are respectively arranged at or near the vibration-generating component, and each outputs a detection signal that can be analyzed independently.

[0018] Multiple first vibration sensors can be set on the first tool holder or tool holder guide rail, and / or multiple second vibration sensors can be set on the frame carrier, which means that two or more vibration sensors are set at different locations.

[0019] Another cutting device is a rotary shearing machine, which includes a rotating blade as the first cutting element and a fixed blade beam as the second cutting element. The rotating blade is mounted on a horizontally movable blade holder, and the fixed blade beam is mounted on a fixed frame carrier of the machine frame. Vibration sensors can be installed on the first blade holder, the guide rail of the first blade holder on the machine frame, the frame carrier, or the machine frame body. The characteristic of this cutting device is that the horizontally moving rotating blade extends horizontally, and the fixed blade beam completes the cutting of the strip material as it moves. When using a single vibration sensor, it can be arranged in different positions; multiple vibration sensors located in different positions can also be configured. The frame carrier, i.e., the component that mounts the blade beam, can also be a worktable that supports the strip material before cutting.

[0020] The slitting machine configuration includes a first rotating blade as a first cutting element and a second rotating blade as a second cutting element. The first rotating blade is mounted on a movable first blade holder on the frame, and the second rotating blade is mounted on a fixed second blade holder on the frame. Vibration sensors can be arranged on the first blade holder, a guide rail of the first blade holder on the frame, the second blade holder, or the frame body. The strip of material to be longitudinally cut passes between the two rotating blades and is divided into individual strips. One of the rotating blades is mounted on a horizontally movable first blade holder, such as an adjustment plate, to achieve adjustment of the first rotating blade relative to the second rotating blade. The second rotating blade is fixed to the fixed second blade holder on the frame. One or more vibration sensors can be arranged in different positions.

[0021] The above description and enumeration of various cutting devices equipped with the wear detection system of this utility model are not exhaustive. The wear detection system can also be integrated into other cutting devices not explicitly listed herein.

[0022] In addition to the cutting device itself, this utility model also relates to a method for determining and outputting wear information of the first and / or second blade elements of the cutting device, wherein the cutting device includes a frame and two cooperating blade elements for cutting. Each blade element is disposed on a blade holder, which is directly or indirectly fixed to the frame. A vibration sensor collects vibration information generated by the interaction of the blade elements during cutting. A processing unit determines wear information characterizing the state of one or both blade elements based on the vibration information and outputs the wear information through a display unit.

[0023] As an improvement to this method, the processing unit may be configured to determine wear information by comparing vibration information or comparison information obtained therefrom with at least one reference information.

[0024] Furthermore, the processing unit can be configured to determine a comparison value, particularly the average value, based on vibration information recorded over multiple consecutive time periods, as comparison information.

[0025] Furthermore, this method may also include: providing at least first reference information and second reference information; outputting first wear information based on a comparison of the comparison value with the first reference information; and outputting second wear information based on a comparison of the comparison value with the second reference information. This allows for tiered information output, for example: first outputting information indicating normal system operation, then issuing a first warning indicating detected wear, and finally outputting a second warning indicating excessive wear. This implementation can be achieved using a color-coded traffic light system.

[0026] Furthermore, this method can provide multiple vibration sensors arranged in different locations, and the processing unit can determine wear information based on the vibration information collected by multiple vibration sensors. This scheme can achieve both redundant detection and cross-comparison and verification of deterministic wear information.

[0027] Ultimately, a cutting device can be provided, such as a shearing machine, comprising a vertically moving upper blade as a first cutting element and a fixed lower blade as a second cutting element; or a roller shearing machine, comprising a horizontally moving roller blade and a fixed blade bar, wherein the roller blade moves along the blade bar; or a slitting machine, comprising a movable first roller blade and a fixed second roller blade. Attached Figure Description

[0028] Other advantages and details of this utility model will be illustrated by the following embodiments and accompanying drawings. The drawings are as follows:

[0029] Figure 1 This utility model's cutting device is a schematic structural diagram of a guillotine shear.

[0030] Figure 2 : Figure 1 Side view of the cutting device shown;

[0031] Figure 3 : Enlarged schematic diagram of the tool assembly system and related vibration sensors;

[0032] Figure 4 A schematic diagram showing the changes of different vibration information over time in the form of an average curve;

[0033] Figure 5 : A schematic diagram of the cutting device of this utility model as a slitting machine;

[0034] Figure 6 This utility model's cutting device is a schematic diagram of a roller shearing machine;

[0035] Figure 7 :and Figure 1 The present invention relates to a cutting device of the same type as a guillotine shear, and illustrates schematic diagrams of various arrangement schemes for vibration sensors; and

[0036] Figure 8 : Figure 7 Side view of the cutting device shown. Detailed Implementation

[0037] Figure 1 This is a front view of the cutting device 1 of this utility model as a guillotine shear 2. Figure 2 for Figure 1 The cutting device 1 shown is a side view. The cutting device 1 includes a frame 3, which includes an upper blade 4 mounted on a first blade holder 5. The first blade holder is mounted via a lateral blade holder guide rail and can be moved vertically by a drive device in the direction indicated by the double arrow P1, thus enabling movement from a raised position to a lowered cutting position, where the input strip material is cut.

[0038] The cutting is achieved through the interaction of the upper blade 4 and the lower blade 6, wherein the lower blade 6 is fixedly mounted on a second blade holder 7, such as on a worktable 8. The second blade holder 7 is fixed to the equipment frame 3, meaning the lower blade 6 remains stationary, while the upper blade 4 can move vertically relative to it. Figure 3 As shown, it is a partial enlarged view of the blade assembly system, in which the upper blade 4 and the lower blade 6 are slightly separated by the cutting gap 9.

[0039] During operation, the material to be cut is guided between the upper blade 4 and the lower blade 6 via a suitable conveying device, including a traction mechanism and a suitable gripping mechanism. At the cutting position, after the strip of material is fixed, the upper blade 4 moves vertically downwards to cooperate with the lower blade 6 to complete the material cutting. After the cut strip is removed, the upper blade 4 is raised again to guide another strip of material. This cutting process is performed at a high frequency, i.e., multiple cuts per minute, which places a corresponding load on the upper blade 4, the lower blade 6, and their relatively accurate positioning through the cutting gap 9. Long-term operation may lead to: wear on the upper blade 4 or the lower blade 6, meaning wear on their cutting edges, or changes in shape and position such as an increase or decrease in the originally set cutting gap 9 during operation.

[0040] Each time the strip material is cut, the interaction between the upper blade 4 and the lower blade 6, combined with the strip material, generates minute vibrations. These vibrations originate from the two blade elements and their coupling with the two blade holders 5, 7 or the equipment frame 3. The vibrations can be short-lived, high-frequency, and on the order of kilohertz. When the upper blade 4 and lower blade 6 are unworn and the cutting gap 9 is optimally adjusted, very weak vibrations are generated, with a small amplitude originating from a central peak, meaning the vibration acceleration of the components involved is small. However, as wear intensifies, the vibration behavior or vibration pattern at the moment of cutting, i.e., the vibration spectrum, will change. It typically increases, meaning the vibration intensity increases, and the vibration spectrum shows an increase in amplitude accompanied by distortion or broadening, with multiple peaks appearing in a wider frequency range. In other words, the vibration behavior and measurable vibration information change with increasing wear, and the degree of wear can be inferred from the detected wear information.

[0041] Therefore, in the illustrated example, two vibration sensors 10 and 11 are provided, with vibration sensor 10 arranged in the first cutter holder 5 and vibration sensor 11 arranged in the second cutter holder 7. Each vibration sensor 10 and 11 continuously provides a corresponding sensing signal, and the signal immediately spikes when the two cutting elements begin to interact with the strip material. The sensor signal, i.e., the vibration information recorded for each cut, is transmitted to the processing device 12, which processes the vibration information or sensing signal using a stored processing algorithm and determines wear information characterizing the degree of wear based on the detected sensing signal.

[0042] To this end, the processing device is configured to compare vibration information, such as directly acquired sensor signals, with reference information. This reference information is stored in processing device 12 and can be set according to the type of vibration information. Each pre-stored reference information, previously recorded for a specific cutting device or this type of cutting device, is associated with a specific wear state. The processing device compares the vibration information in signal pattern form with the reference information, which is also in signal pattern form. The reference information is stored in processing device 12, and multiple other reference information are associated with different wear states and material parameters; that is, a corresponding set of information can be used for comparison. Based on the best matching result of the compared vibration information, the degree of wear is determined from the corresponding matching reference information, thereby determining the wear information. This wear information is displayed via display device 13, such as a monitor with color display functionality. Depending on whether the wear information indicates no wear, wear has begun but is tolerable, or severe wear requiring immediate attention, one of three indicator lights 14, 15, and 16 is triggered. If no wear is detected, indicator light 14 illuminates green. If wear begins but is tolerable, signal light 15 illuminates yellow as a warning. If severe wear is detected, signal light 16 illuminates red as a warning signal. This forms a traffic signal system.

[0043] Since there are two vibration sensors 10 and 11, the processing device can process and compare them separately, thereby obtaining two comparable results: one as the main comparison result and the other for rationality verification.

[0044] Vibration information can be recorded individually for each cut, and corresponding comparison and wear information can be determined. However, intermittent recording can also be used, such as recording once every 10, 20, 50, or 100 cuts. Alternatively, signal acquisition can be performed at fixed time intervals, such as every minute or every 5 minutes. In this case, vibration signals from multiple consecutive cuts, such as five, can be recorded and evaluated in each signal acquisition cycle. Based on this, a comprehensive value, such as the average value, is determined as vibration information for comparison. Therefore, this scheme has multiple evaluation implementation methods.

[0045] Figure 4 An example of the variation of the curves plotted based on multiple individually recorded vibration data points and the corresponding mean curves is shown. The horizontal axis represents the number of measurements, and the vertical axis represents, for example, the maximum amplitude or maximum acceleration of the measured vibration. At each measurement, the maximum amplitude (peak value) or maximum acceleration of the vibration is determined from the corresponding sensor signal and then compared with reference information. Figure 4 In the diagram, several such vibration information points (S1-S6) are marked, which are merely examples. Overall, a curve K is formed that runs through all the vibration information points.

[0046] The mean curve M, determined by averaging curve K, is also shown.

[0047] Furthermore, the diagram shows the first reference information R1 as a horizontal dashed line and the second reference information R2 as a horizontal dotted line. Reference information R1 represents the first information level, and reference information R2 represents the second information level. Each recorded vibration information, i.e., each vibration or acceleration value, is compared with reference information R1 and R2. Based on the comparison result, one of the three indicator lights is triggered. The two reference information R1 and R2 therefore represent different information thresholds. Reference information R1 is the warning threshold, which triggers the yellow indicator light 15 when it is reached. Reference information R2 is the alarm threshold, which triggers the red indicator light 16 when it is reached. When the value is below reference information R1, the green indicator light 14, indicating normal operation, is displayed.

[0048] As described above, the curve K is determined based on individual sensor information points. Due to the relative variation of these sensor information points, the determined sensor information changes during measurement, causing curve K to exhibit a relatively sawtooth trend. Although most sensor information points in the initial segment of the curve are below the first reference information R1, sensor information points S1 and S2, for example, still exceed the reference information R1. Considering only this value would trigger a warning signal; to avoid this phenomenon, since it is only a screenshot, a mean curve M is determined, whose trend is significantly lower than the reference information R1.

[0049] However, Figure 4 The display shows that as time increases and the number of measurements rises, the mean curve M also rises. At sensor information S3, the acquired mean reaches or exceeds the reference information R1, and the indicator light switches from the previous green indicator light 14 to the yellow indicator light 15. This indicates significant wear requiring pre-planned intervention. As shown in the figure, vibration information increases over time, as indicated by vibration information S4 and S5, causing the mean curve M to rise further. Until the recorded sensor information S6, the mean reaches or exceeds the reference information R2, triggering the third red indicator light 16, indicating that immediate action is needed due to severe wear, which can be resolved by adjusting the cutting gap 9 or replacing the tool. An alarm signal is then issued. Therefore, a rapid response is triggered, and both curve K and the mean curve M show a decline. This means that the moment when this unacceptable wear occurs can be accurately identified, allowing for immediate action at the onset of this condition. Because the yellow warning signal has been displayed in advance, preparations can be made before facing this situation.

[0050] The cutting device 1, as described above, is a guillotine shear, also known as a drop shear. Figure 5This illustration shows the cutting device 1 of the present invention as a slitting machine, used to longitudinally divide a continuous strip of material into two strips. The first cutting element is a first rotating blade 17 mounted on a first blade holder 18, which is horizontally movable on a support frame (not shown). The first blade holder may be a position-adjustable plate. The second cutting element is a second rotating blade 19 disposed on a fixed second blade holder 20. The two rotating blades rotate in opposite directions as indicated by arrows P2 and P3. The strip of material, as shown by arrow P4, is divided into two strips after passing over the two rotating blades 17 and 19, as shown by arrows P5 and P6.

[0051] Two vibration sensors 21 and 22, respectively, are installed on the two tool holders 18 and 20 to detect the corresponding vibrations and transmit them to the processing device (not shown). The processing method is the same as that described in the first embodiment.

[0052] Figure 6 The present invention's cutting device 1 is shown as an embodiment of a roller shearing machine. The first cutting element is a rotating blade 23 disposed on a first blade holder 24, which can move horizontally in the direction indicated by the double arrow P7, and the rotating blade 23 rotates clockwise in the direction indicated by the arrow P8.

[0053] The second cutting element is a fixed blade beam 25, which is mounted on a fixed frame carrier 26, which again serves as a second blade holder, such as a worktable. When the rotating blade 23 is in the left-hand starting position, the strip material is introduced. Upon reaching the cutting station, the strip is fixed, and the rotating blade 23 moves to the right in the direction shown by the dotted line, cutting the strip through the interaction between the rotating blade 23 and the fixed blade beam 25. Subsequently, the strip is pulled again, and the rotating blade 23 moves back from the dotted line position, cutting the strip. Alternatively, the rotating blade 23 returns... Figure 6 At the starting position shown, perform another cut.

[0054] Furthermore, two vibration sensors 27 and 28 are provided. The first vibration sensor 27 is mounted on the first tool holder 24, and the second vibration sensor 28 is mounted on the frame carrier 26. Both sensors communicate with a processing device (not shown), which processes the sensing signals to determine sensor information and perform wear judgment comparison.

[0055] Figure 7 and Figure 8 This invention illustrates one embodiment of the cutting device 1, whose structure is similar to... Figure 1-3 The diagram corresponds to a guillotine shear. The figure shows a support frame 3, an upper blade 4 with a first blade holder 5, and a lower blade 6 with a frame carrier 7. A lateral blade holder guide rail 29 is also shown, allowing the first blade holder 5 to move vertically within the support frame 3. Two vibration sensors 10 and 11 are also shown.

[0056] In addition, multiple different locations are marked with dashed sensor symbols in the diagram. One of the two vibration sensors 10 and 11 can be selected, or other vibration sensors can be added. Each sensor outputs an independent sensing signal. Of course, all vibration sensors are connected to the processing device 12, which performs corresponding signal evaluation, and then connects to the display device 13.

[0057] In principle, corresponding treatment plans can be formulated based on wear information. For example, when the first warning level is reached, indicating wear, and this state persists for a long time, the cutting gap 9 can be readjusted if its measured width during operation exceeds the tolerance range. This readjustment can be performed automatically, that is, the cutting gap 9 is automatically reset according to the wear results, and the effectiveness of the measures is verified in real time through subsequent cutting quality inspection data.

Claims

1. A cutting device for cutting strip materials, comprising two cooperating first blade elements (4, 17, 23) and second blade elements (6, 19, 25) for cutting, wherein the first blade elements (4, 17, 23) and second blade elements (6, 19, 25) are respectively disposed on a first blade holder (5, 18, 24) and a second blade holder (7, 20, 26), and the first blade holder (5, 18, 24) and the second blade holder (7, 20, 26) are directly or indirectly mounted on a machine frame (3), characterized in that: At least one vibration sensor (10, 11, 21, 22, 27, 28) is provided to detect vibration information, which is a measurement of the vibration generated by the interaction between the first cutting element (4, 17, 23) and the second cutting element (6, 19, 25) during cutting. The processing unit (12) is configured to determine wear information characterizing the state of the first cutting element (4, 17, 23) and / or the second cutting element (6, 19, 25) based on the vibration information, and a display unit (13) is provided to output the determined wear information.

2. The cutting device for cutting strip materials according to claim 1, characterized in that, The processing unit is configured to determine wear information by comparing vibration information or comparison information determined therefrom with at least one reference information (R1, R2).

3. The cutting device for cutting strip materials according to claim 2, characterized in that, The processing unit is configured to determine a comparison value based on multiple vibration information continuously recorded over time, specifically as the average value of the comparison information.

4. The cutting device for cutting strip materials according to claim 2 or 3, characterized in that, There are at least a first reference information (R1) and a second reference information (R2). The first wear information is output based on the comparison of the comparison value with the first reference information (R1), and the second wear information is output based on the comparison of the comparison value with the second reference information (R2).

5. The cutting apparatus for cutting strip materials according to claim 1 or 2, characterized in that, The processing unit (12) is configured to determine wear information based on the vibration information of the multiple vibration sensors (10, 11, 21, 22, 27, 28) arranged in different positions.

6. The cutting apparatus for cutting strip materials according to claim 1 or 2, characterized in that, Vibration sensors (10, 11, 21, 22, 27, 28) are installed on the first tool holder (5, 18, 24), the second tool holder (7, 20, 26) or the equipment frame (3).

7. The cutting apparatus for cutting strip materials according to claim 1 or 2, characterized in that, The first cutting element (4) is an upper cutting element set on a vertically movable first cutting element (5), and the second cutting element (6) is a lower cutting element set on a fixed frame carrier located on the machine frame, which serves as the second cutting element (7). The vibration sensor (10) is set on the first cutting element (5), the cutting element guide rail (29) on the machine frame, or the frame carrier.

8. The cutting apparatus for cutting strip materials according to claim 7, characterized in that, At least one first vibration sensor (10) is disposed on the first tool holder (5) or the tool holder guide rail (29), and at least one second vibration sensor (11) is disposed on the frame carrier.

9. The cutting apparatus for cutting strip materials according to claim 8, characterized in that, The first tool holder (5) or tool holder guide rail (29) is provided with a plurality of first vibration sensors (10), and / or the frame carrier is provided with a plurality of second vibration sensors (11).

10. The cutting apparatus for cutting strip materials according to claim 1 or 2, characterized in that, The first cutting element (23) is a rotating cutting tool set on a horizontally movable first cutting tool holder (24), and the second cutting element (25) is a fixed cutting beam set on a fixed frame carrier of the frame (3). The rotating cutting tool can move along the cutting beam. The vibration sensor (27) is set on the guide rail of the first cutting tool holder (24), the frame carrier or the frame (3) body of the first cutting tool holder (24) on the frame (3).

11. The cutting apparatus for cutting strip materials according to claim 1 or 2, characterized in that, The first cutting element (17) is a first rotating cutting element, and the second cutting element (19) is a second rotating cutting element. The first rotating cutting element is mounted on the movable first cutting element (18) of the frame (3), and the second rotating cutting element is mounted on the fixed second cutting element (20) of the frame (3). Vibration sensors (21, 22) are mounted on the first cutting element (18), the guide rail of the first cutting element (18) on the frame (3), the second cutting element (20), or the body of the frame (3).

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