Die cutting control system
Through the design of the die-cut control system, the matching of the cutting unit and the conveyor is detected in real time by using sensors and processing devices, the problem of large cutting errors in traditional die-cutting processes is solved, and more accurate cutting and automatic adjustment is achieved. Improved production efficiency.
Patent Information
- Application Number
- CN202421073477.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In traditional die-cutting processes, due to the possible deviation of the fit between the die-cutting knife and the conveying device, the cutting error is large. The existing technology mainly relies on naked eye judgment, and there are large errors and hysteresis, making it difficult to adjust accurately.
Design a die-cut control system, including a cutting unit, a conveying device, a first sensor and a second sensor, by detecting the cutting signal in the cutting unit and the position information of the first mark on the material, and using the processing device to judge the cutting in real time The matching of the cutting frequency and conveying speed is carried out, the position offset is accurately calculated, and automatic adjustment is achieved through the alarm device and adjustment platform.
It realizes more accurate and efficient cutting error detection and real-time adjustment than human eye judgment, eliminates lag, improves cutting accuracy and efficiency, and reduces the generation of defective products.
Smart Images
Figure CN222222841U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of die-cutting equipment, and in particular relates to a die-cutting control system. Background Art
[0002] Die-cutting is a cutting process for the post-processing of printed products. The die-cutting process can make printed products or other products into die-cutting knife plates according to pre-designed graphics for cutting, so that the shape of the printed products is no longer limited to straight edges and right angles. Traditional die-cutting production uses die-cutting knives to combine into die-cutting plates according to the patterns required by product design. Under the action of pressure, printed products or other plate-shaped blanks are rolled into the required shape or cut marks. Die-cutting is generally coordinated with a conveying device. The conveying device continuously conveys the product, and the die-cutting knife continues to move to cut the corresponding graphics on the product, achieving high-efficiency die-cutting.
[0003] However, since there may be deviations in the coordination between the die-cutting knife and the conveying device, the current die-cutting accuracy is generally judged by the naked eye and then adjusted manually. The naked eye has large limitations and large errors. Some small errors are difficult to see. When the deviation is seen by the naked eye and then adjusted, defective products have already been produced. Therefore, the traditional method of judging die-cutting errors by human eye observation has large errors and lags. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a die-cutting control system for solving the problem that traditional die-cutting is prone to errors.
[0005] The utility model solves the above technical problems with the following technical solutions: a die-cutting control system, which includes: a cutting unit;
[0006] A conveying device, on which a material passing through the cutting unit is conveyed, and a plurality of first marks corresponding to the cutting frequency of the cutting unit are arranged at intervals along a feeding direction on the material;
[0007] A first sensor, whose collecting end is arranged opposite to the cutting unit, is used to send a first signal when a cutter in the cutting unit is detected;
[0008] A second sensor, whose collection end is arranged opposite to the first mark, is used for triggering the collection of the first mark according to the first signal transmitted at an interval;
[0009] The processing device is connected to the first sensor and the second sensor respectively, and is used to determine the position offset of the plurality of the first marks collected by the second sensor.
[0010] Compared with the prior art, the above technical solution has the following beneficial effects:
[0011] The cutter in the cutting unit is detected by the first sensor. When the cutter is detected, a first signal is sent. The sending frequency of the first signal is the same as the cutting frequency of the cutter and matches the speed of the material conveyed by the conveying device, that is, during the continuous conveying of the conveying device, the reciprocating motion of the cutter in the cutting unit can continuously cut the material. The second sensor collects the position information of the first mark on the material according to the first signal interval, and then determines whether the position of the first mark on the material is within the target range through the processing device, and calculates its position offset. Since the first sensor is connected to the second sensor through the processing device, the positions of the two sensors are fixed, and the second sensor is triggered according to the first signal transmitted by the first sensor, so that it can accurately determine whether the cutting frequency of the cutting unit matches the conveying speed of the conveying unit. Compared with the judgment of the human eye, it is more accurate and efficient, and can realize real-time detection and judgment to eliminate hysteresis.
[0012] Based on the above technical solution, the embodiment of the present application can also be improved as follows:
[0013] Furthermore, it also includes an alarm device connected to the processing device, which is used to send an alarm signal when the position offset is greater than a preset first threshold.
[0014] Furthermore, the cutting unit comprises a cutting roller, and a plurality of cutting knives are circumferentially arranged at intervals on the cutting roller.
[0015] Furthermore, the first sensor is fixedly installed by a fixed bracket, the fixed bracket includes a fixed plate and a connecting rod, the first end of the connecting rod is connected to the fixed plate, the second end of the connecting rod extends perpendicular to the feeding direction, and the first sensor is installed on the second end of the connecting rod.
[0016] Furthermore, waist-shaped holes are provided at four corners of the fixing plate, and the long axis direction of the waist-shaped holes is consistent with the extension direction of the first sensor acquisition end.
[0017] Furthermore, it also includes a dual-axis adjustment platform, which includes an X-axis translation adjustment mechanism and a Y-axis translation adjustment mechanism installed on the output end of the X-axis translation adjustment mechanism, and the second sensor is installed on the output end of the Y-axis translation adjustment mechanism.
[0018] Furthermore, the second sensor is a camera.
[0019] Furthermore, it also includes a fill light, which is arranged on the output end of the Y-axis translation adjustment mechanism, located between the second sensor collection end and the material, and is used to fill light in the direction extending to the second sensor collection end.
[0020] Furthermore, the processing device is also connected to the cutting unit and / or the conveying device, and is used to control the cutting frequency of the cutting unit and the conveying speed of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0023] Reference numerals:
[0024] 1. Cutting unit; 101. Cutter;
[0025] 2. Conveying device; 3. Materials;
[0026] 4. First sensor; 5. Second sensor;
[0027] 6. First sign;
[0028] 7. Fixed bracket, 701. Fixed plate; 702. Connecting rod; 703. Waist-shaped hole;
[0029] 8. Dual-axis adjustment platform; 801. X-axis translation adjustment mechanism; 802. Y-axis translation adjustment mechanism;
[0030] 9. Fill light. DETAILED DESCRIPTION
[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0032] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "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.
[0034] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0036] like Figure 1 As shown, the utility model provides a die-cutting control system, which includes: a cutting unit and a conveying device, the conveying device is used to convey the printed material, and the material is sent to the cutting unit for cutting. In this embodiment, the conveying device is implemented by a conveying roller.
[0037] The conveying device conveys the material passing through the cutting unit, and a plurality of first marks corresponding to the cutting frequency of the cutting unit are arranged at intervals along the feeding direction on the material. The first mark can be an identification block for easy identification, such as a glue block, etc. The first mark corresponds one-to-one to the part that needs to be cut.
[0038] The first sensor collection end is arranged opposite to the cutting unit and is used to send out a first signal when detecting the cutter in the cutting unit. The first sensor collects the cutting frequency of the cutter in the cutting unit, that is, the first sensor sends out a first signal each time the cutter in the cutting unit cuts once.
[0039] The cutting unit can be realized by a die-cutting knife or a cutting roller that moves up and down;
[0040] The method adopted in this embodiment is a cutting roller. Specifically, the cutting unit includes a cutting roller. A plurality of cutters are arranged circumferentially at intervals on the cutting roller. Each time the first sensor detects the cutter on one side, it sends out a first signal, and the cutter performs cutting once synchronously.
[0041] Secondly, the cutting unit includes a die-cutting knife, which is not shown in the specific figure. Each time the die-cutting knife falls, a first signal is collected.
[0042] The second sensor is arranged above the material and upstream of the cutting unit, and the collecting end of the second sensor is arranged opposite to the first mark, and is used for triggering the collecting of the first mark according to the first signal transmitted at intervals;
[0043] The processing device is connected to the first sensor and the second sensor respectively, and is used to determine the position offset of the first marks collected by the second sensor, wherein the processing device can be implemented by a logic controller such as a PLC.
[0044] During specific use, under normal circumstances, the conveying device and the cutting unit act synchronously. When the conveying speed of the conveying device matches the cutting frequency of the cutting unit, cutting can be well achieved. The cutter in the cutting unit is detected by the first sensor. When the cutter is detected, a first signal is sent. The sending frequency of the first signal is the same as the cutting frequency of the cutter, and matches the speed of the conveying device conveying the material, that is, during the continuous conveying process of the conveying device, the reciprocating motion of the cutter of the cutting unit can continuously cut the material. Since the position of the second sensor and the first sensor remains fixed, the second sensor collects the position information of the first mark on the material according to the first signal interval, that is, when the first signal is triggered once, the second sensor collects a The first mark on the material is detected once, and the position of the first mark collected multiple times is compared with the target position to determine whether there is a deviation during material transmission. The target position is set after the cutting unit and the conveying device are successfully matched. Then the processing device is used to determine whether the position of the first mark on the material is within the target range, and its position offset is calculated. Since the first sensor is connected to the second sensor through the processing device, the positions of the two sensors are fixed, and the second sensor is triggered according to the first signal transmitted by the first sensor, so as to accurately determine whether the cutting frequency of the cutting unit matches the conveying speed of the conveying unit. Compared with the judgment of the human eye, it is more accurate and efficient, and can realize real-time detection and judgment to eliminate lag.
[0045] In this embodiment, when the offset is too large, an alarm can be implemented. Specifically, an alarm device connected to the processing device is also included, which is used to send an alarm signal when the position offset is greater than a preset first threshold value, thereby reminding the operator.
[0046] Preferably, in one embodiment, automatic adjustment can be achieved when the offset occurs and exceeds a second threshold. Specifically, the processing device is also connected to the cutting unit and / or the conveying device to control the cutting frequency of the cutting unit and the conveying speed of the conveying device, thereby re-matching the cutting unit with the conveying device to reduce the position offset. When the processing device is adjusted, a second threshold can be introduced. When the offset is greater than the second threshold, an adjustment operation is triggered, that is, when the second threshold is exceeded, adaptive adjustment is performed by controlling the conveying device or the cutting unit to reduce the offset and avoid deviations exceeding the standard. The first threshold is the threshold at which the position offset meets the standard, and the second threshold is usually less than the first threshold. When the first threshold is exceeded, the cut product is a non-standard product. Therefore, the second threshold is set to be less than the first threshold, and the adjustment is controlled in advance before the standard is exceeded.
[0047] In this embodiment, the first sensor is fixedly installed by a fixed bracket, the fixed bracket includes a fixed plate and a connecting rod, the first end of the connecting rod is connected to the fixed plate, the second end of the connecting rod extends perpendicular to the feeding direction, and the first sensor is installed on the second end of the connecting rod, wherein the first sensor can adopt a high-precision photoelectric sensor, etc., for accurately detecting the cutter.
[0048] Among them, waist-shaped holes are opened at the four corners of the fixing plate, and the long axis direction of the waist-shaped holes is consistent with the extension direction of the first sensor collection end. When the cutting unit is replaced, the position of the first sensor can be replaced through the waist-shaped holes to video cutting units of different specifications.
[0049] It also includes a dual-axis adjustment platform, which includes an X-axis translation adjustment mechanism and a Y-axis translation adjustment mechanism installed on the output end of the X-axis translation adjustment mechanism, and the second sensor is installed on the output end of the Y-axis translation adjustment mechanism.
[0050] The X-axis translation adjustment mechanism and the Y-axis translation adjustment mechanism may use the same screw adjustment mechanism. In this embodiment, a manual screw adjustment mechanism is used.
[0051] The position of the second sensor can be adjusted in real time through the dual-axis adjustment platform to adapt to materials of different specifications. Due to the differences in materials, the position of the first mark thereon may be different. The position of the second sensor can be adjusted through the dual-axis adjustment platform to better identify the first mark.
[0052] In this embodiment, the second sensor is a camera, which uses a high-precision camera to capture the first marks on the collected material to determine whether the position of each first mark is offset.
[0053] It also includes a fill light, which is arranged on the output end of the Y-axis translation adjustment mechanism, located between the second sensor collection end and the material, and is used to fill light in the direction extending toward the second sensor collection end, so that the second sensor can more clearly capture the first mark below.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A die cutting control system, characterized in that: include: Cutting unit; A conveying device, on which a material passing through the cutting unit is conveyed, and a plurality of first marks corresponding to the cutting frequency of the cutting unit are arranged at intervals along a feeding direction on the material; A first sensor, whose collecting end is arranged opposite to the cutting unit, is used to send a first signal when a cutter in the cutting unit is detected; A second sensor, whose collection end is arranged opposite to the first mark, is used for triggering the collection of the first mark according to the first signal transmitted at an interval; The processing device is connected to the first sensor and the second sensor respectively, and is used to determine the position offset of the plurality of the first marks collected by the second sensor.
2. The die-cutting control system according to claim 1, characterized in that: It also includes an alarm device connected to the processing device, which is used to send an alarm signal when the position offset is greater than a preset first threshold.
3. The die-cutting control system according to claim 1, characterized in that: The cutting unit comprises a cutting roller, on which a plurality of cutting knives are arranged at intervals in a circumferential direction.
4. The die-cutting control system according to claim 1, characterized in that: The first sensor is fixedly installed by a fixing bracket, and the fixing bracket includes a fixing plate and a connecting rod. The first end of the connecting rod is connected to the fixing plate, and the second end of the connecting rod extends perpendicular to the feeding direction. The first sensor is installed on the second end of the connecting rod.
5. The die-cutting control system according to claim 4, characterized in that: Waist-shaped holes are provided at the four corners of the fixing plate, and the long axis direction of the waist-shaped holes is consistent with the extending direction of the first sensor collection end.
6. The die-cutting control system according to claim 1, characterized in that: It also includes a dual-axis adjustment platform, which includes an X-axis translation adjustment mechanism and a Y-axis translation adjustment mechanism installed on the output end of the X-axis translation adjustment mechanism, and the second sensor is installed on the output end of the Y-axis translation adjustment mechanism.
7. The die-cutting control system according to claim 6, characterized in that: The second sensor is a camera.
8. The die-cutting control system according to claim 6, characterized in that: It also includes a fill light, which is arranged on the output end of the Y-axis translation adjustment mechanism, located between the second sensor collection end and the material, and is used for fill light in the direction extending to the second sensor collection end.
9. The die-cutting control system according to claim 1, characterized in that: The processing device is also connected to the cutting unit and / or the conveying device, and is used to control the cutting frequency of the cutting unit and the conveying speed of the conveying device.