Die cutting process of flake graphite

Abstract

The invention provides a die cutting process for flake graphite, which comprises the following steps of: 1, performing position avoiding treatment between a circular knife convex die and a circular knife concave die during die opening; 2, after the position avoiding processing result is completed, circular cutter die cutting is carried out, and the joint position of the flake graphite is recognized based on a preset device; 3, the circular knife is controlled to stop rotating at the joint position according to the recognition result, and after the joint position passes, the circular knife is controlled to continue to conduct die cutting operation on the flake graphite; step 4, performing clearance compensation on the non-joint position of the flake graphite during die cutting operation according to an asynchronous operation function; step 5, repeating the steps 2-4 until the die cutting operation of the flake graphite is completed; the precision and the accuracy of die cutting are improved, the material utilization rate can be effectively improved, and originally scrapped sheet graphite is recycled.

Description

Technical Field

[0001] The invention relates to the technical field of die-cutting control, and in particular to a die-cutting process for sheet graphite. Background Art

[0002] At present, with the market demand, the amount of graphite used is increasing. After a large amount of coiled graphite is shipped, a large amount of sheet graphite will gradually be produced, and its length, width and shape are inconsistent, which makes the circular knife unable to die-cut, thus resulting in a large amount of stagnant materials;

[0003] However, in the prior art, direct die-cutting of sheet materials will result in the waste of 1-2 sheets of products at the joints, and other auxiliary materials will also be scrapped;

[0004] Therefore, in order to overcome the above technical problems, the present invention provides a die-cutting process for graphite sheets, which aims to perform circular die-cutting on graphite sheets while skipping the joint position when passing through the joint and then performing die-cutting. Summary of the invention

[0005] The present invention provides a die-cutting process for sheet graphite, which is used for preparing for subsequent die-cutting through position avoidance processing, avoiding unnecessary collision and interference between dies; performing circular knife die-cutting and identifying joint positions, so as to control the movement of the circular knife in a targeted manner; thereby ensuring that the circular knife stops rotating at the joint position, avoiding excessive cutting or damage to the joint, and continuing die-cutting after the joint passes, thereby ensuring the accuracy and integrity of die-cutting; utilizing an asynchronous operation function to perform gap compensation on non-joint positions, which can better adapt to the characteristics of sheet graphite and possible deviations, and improve die-cutting quality; improving the precision and accuracy of die-cutting, especially for the processing of joint positions, reducing the scrap rate; effectively improving material utilization, and recycling the sheet graphite that was previously stagnant and scrapped.

[0006] A die-cutting process for graphite sheets, comprising:

[0007] Step 1: When opening the mold, make position avoidance treatment between the circular knife punch and the circular knife die;

[0008] Step 2: After completing the position avoidance processing result, circular knife die cutting is performed, and the joint position of the sheet graphite is identified based on the preset device;

[0009] Step 3: Control the circular knife to stop rotating at the joint position according to the recognition result, and control the circular knife to continue die-cutting the graphite sheet after the joint position is passed;

[0010] Step 4: Perform gap compensation on the non-joint position of the sheet graphite during die-cutting operation according to the asynchronous operation function;

[0011] Step 5: Repeat steps 2-4 until the die-cutting operation of the graphite sheet is completed.

[0012] Preferably, a die-cutting process for graphite flakes, in step 1, when the mold is opened, comprises:

[0013] Increase the spacing of the die-cutting circular knives to meet the target conditions;

[0014] The target condition is that the die-cutting circular knife can pass through the material belt and the blade will not scrape the graphite sheet. At the same time, the spacing of the die-cutting circular knife is compensated asynchronously by the equipment.

[0015] Preferably, in a die-cutting process for sheet graphite, in step 1, when opening the mold, a position avoidance process is performed between the circular knife punch and the circular knife die, including:

[0016] Acquire a first shape feature of the circular knife punch, and at the same time, acquire a second shape feature of the circular knife die;

[0017] According to the matching of the first shape feature and the second shape feature, the relative nesting position of the circular knife punch and the circular knife die is determined;

[0018] Reading the first position information of the circular knife die, and at the same time, determining the second position information of the circular knife punch according to the relative nesting position of the circular knife punch and the circular knife die;

[0019] The positions of the circular knife punch and the circular knife die are adjusted according to the first position information and the second position information, and the position avoidance between the circular knife punch and the circular knife die is achieved based on the position adjustment result.

[0020] Preferably, a die-cutting process for sheet graphite, in step 2, after completing the position avoidance processing result and before performing circular knife die-cutting, comprises:

[0021] Obtaining the bearing area of ​​the flake graphite;

[0022] Extracting first contour points of the bearing area, and at the same time, performing a first mapping of first boundary contour points of the bearing area in a preset three-dimensional rectangular coordinate system;

[0023] Determine a first three-dimensional coordinate point set of a first contour point according to the first mapping result;

[0024] Extracting second boundary contour points of the graphite flakes, and at the same time, performing a second mapping on the second contour points of the graphite flakes in a preset three-dimensional rectangular coordinate system;

[0025] Determine a second three-dimensional coordinate point set of second contour points according to the second mapping result;

[0026] The first three-dimensional coordinate point set is matched with the second three-dimensional coordinate point set to determine whether the graphite sheet needs to be corrected in position on the bearing area, and at the same time, a target operation is performed on the graphite sheet according to the determination result.

[0027] Preferably, a die-cutting process for sheet graphite matches a first three-dimensional coordinate point set with a second three-dimensional coordinate point set, determines whether the sheet graphite needs to be positionally corrected on a bearing area, and performs a target operation on the sheet graphite according to the determination result, including:

[0028] When the first three-dimensional coordinate point set matches the second three-dimensional coordinate point set, it is determined that the sheet graphite does not need to be positionally corrected in the bearing area, and at the same time, a circular knife die cutting instruction is generated, and a first target operation is performed on the sheet graphite according to the circular knife die cutting instruction;

[0029] When the first three-dimensional coordinate point set does not match the second three-dimensional coordinate point set, determining a target correction point and a target correction value for the second boundary contour point based on the first three-dimensional coordinate point set;

[0030] A second target operation is generated according to the target correction point and the target correction value, and the position of the second boundary contour point is corrected according to the second target operation. At the same time, a circular knife die cutting instruction is generated after the position correction, and the first target operation is performed on the sheet model according to the circular knife die cutting instruction.

[0031] Preferably, in a die-cutting process for sheet graphite, in step 2, the joint position of the sheet graphite is identified based on a preset device, comprising:

[0032] Collecting image information of the graphite sheet according to a preset device, and determining boundary pixel points of the graphite sheet according to the image information of the graphite sheet;

[0033] The boundary pixel points of the graphite flake are read to determine the boundary line distribution characteristics of the graphite flake, and at the same time, the joint position of the graphite flake is determined according to the boundary line distribution characteristics of the graphite flake.

[0034] Preferably, a die-cutting process for graphite flakes, determining the joint position of the graphite flakes according to the boundary line distribution characteristics of the graphite flakes, comprises:

[0035] Reading the boundary lines of the graphite flakes, and determining the smoothness of each boundary line in the graphite flakes according to the boundary pixel points;

[0036] The smoothness of each boundary line was compared in flake graphite;

[0037] Locate the target boundary line whose smoothness is inconsistent with that of other boundary lines according to the comparison result, and at the same time, obtain a number of left convex points in the target boundary line and a number of right convex points of the target boundary line;

[0038] Pick out the largest left convex point among several left convex points on the target boundary line, and at the same time, pick out the largest right convex point among several right convex points on the target boundary point;

[0039] Determine a left joint position line parallel to the target boundary line based on the maximum left convex point, and at the same time, determine a right joint position line parallel to the target boundary line based on the maximum right convex point;

[0040] The joint position of the graphite sheet is determined according to the left joint position line and the right joint position line, wherein the area bounded by the left joint position line and the right joint position line is used as the joint position.

[0041] Preferably, a die-cutting process for sheet graphite, in step 3, the circular knife is controlled to stop rotating at the joint position according to the recognition result, and the circular knife is controlled to continue the die-cutting operation on the sheet graphite after the joint position is passed, including:

[0042] Read the recognition results to determine the area range of the joint position;

[0043] Obtaining a target direction of the circular knife at the joint position, and determining a starting boundary line and an ending boundary line in a region of the joint position according to the target direction of the circular knife at the joint position;

[0044] Obtain a first position value of a starting boundary line and a second position value of an ending boundary line in the same plane;

[0045] Monitor the dynamic position value of the circular knife;

[0046] When the dynamic position value of the circular knife coincides with the first position value, a stop rotation instruction is generated, and the circular knife is controlled to stop rotating according to the stop rotation instruction;

[0047] When the dynamic position value of the circular knife coincides with the second position value, a die-cutting instruction is generated, and the circular knife is controlled to continue the die-cutting operation on the graphite sheet according to the die-cutting instruction.

[0048] Preferably, in a die-cutting process for sheet graphite, in step 4, gap compensation is performed on a non-joint position of the sheet graphite during the die-cutting operation according to the asynchronous operation function, including:

[0049] Obtaining a reference gap of the graphite sheet at a non-joint position, and collecting an actual gap of the graphite sheet at a non-joint position;

[0050] Match the reference gap with the actual gap to determine whether gap compensation is required;

[0051] When the actual gap is consistent with the reference gap, it is determined that gap compensation is not required;

[0052] Otherwise, it is determined that gap compensation is required, and at the same time, a target difference between the reference gap and the actual gap is obtained, and an asynchronous operation control instruction is generated according to the target difference;

[0053] The asynchronous operation function is controlled according to the asynchronous operation control instruction to perform gap compensation on the non-joint position of the sheet graphite during the die-cutting operation.

[0054] Preferably, a die-cutting process for graphite flakes, in step 5, repeating steps 2-4 until the die-cutting operation of the graphite flakes is completed, comprises:

[0055] Real-time monitoring of die-cutting operations on sheet graphite;

[0056] When the die-cutting operation of the sheet graphite reaches the tail end of the sheet graphite, an alarm reminder is issued, and at the same time, a stop work instruction is triggered based on the alarm reminder;

[0057] Control the die-cutting equipment to stop working according to the stop work instruction.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] Through position avoidance processing, preparation is made for subsequent die-cutting to avoid unnecessary collision and interference between dies; circular knife die-cutting is carried out and the joint position is identified so as to control the movement of the circular knife in a targeted manner; thereby ensuring that the circular knife stops rotating at the joint position to avoid excessive cutting or damage to the joint, and die-cutting is continued after the joint passes, thus ensuring the accuracy and integrity of die-cutting; using the asynchronous operation function to compensate for the gap at the non-joint position can better adapt to the characteristics of sheet graphite and possible deviations and improve the die-cutting quality; improving the precision and accuracy of die-cutting, especially for the processing of the joint position, reducing the scrap rate; effectively improving the material utilization rate and recycling the previously stagnant and scrapped sheet graphite.

[0060] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0061] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0063] Figure 1 This is a flow chart of a die-cutting process for graphite sheets in an embodiment of the present invention;

[0064] Figure 2 This is a flow chart of step 1 in a die-cutting process of sheet graphite in an embodiment of the present invention;

[0065] Figure 3 This is a flow chart of step 2 in a die-cutting process for graphite sheets in an embodiment of the present invention. DETAILED DESCRIPTION

[0066] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0067] Embodiment 1:

[0068] This embodiment provides a die-cutting process for graphite sheets, such as Figure 1 As shown, including:

[0069] Step 1: When opening the mold, make position avoidance treatment between the circular knife punch and the circular knife die;

[0070] Step 2: After completing the position avoidance processing result, circular knife die cutting is performed, and the joint position of the sheet graphite is identified based on the preset device;

[0071] Step 3: Control the circular knife to stop rotating at the joint position according to the recognition result, and control the circular knife to continue die-cutting the graphite sheet after the joint position is passed;

[0072] Step 4: Perform gap compensation on the non-joint position of the sheet graphite during die-cutting operation according to the asynchronous operation function;

[0073] Step 5: Repeat steps 2-4 until the die-cutting operation of the graphite sheet is completed.

[0074] In this embodiment, the preset device may be a CCD device for identifying the joint position of the graphite sheet.

[0075] In this embodiment, when the mold is opened, position avoidance processing is performed between the circular knife punch and the circular knife die, including: increasing the spacing of the die-cutting circular knives to meet the target conditions; wherein the target conditions are that the die-cutting circular knives can pass through the material belt and the blade will not scrape the sheet graphite, and at the same time, the spacing of the die-cutting circular knives is compensated asynchronously by the equipment.

[0076] The working principle and beneficial effects of the above technical solution are: through position avoidance processing, preparation is made for subsequent die-cutting to avoid unnecessary collision and interference between dies; circular knife die-cutting is performed and the joint position is identified so as to control the movement of the circular knife in a targeted manner; thereby ensuring that the circular knife stops rotating at the joint position to avoid excessive cutting or damage to the joint, and die-cutting is continued after the joint passes, thereby ensuring the accuracy and integrity of die-cutting; using the asynchronous operation function to compensate for the gap at the non-joint position, it can better adapt to the characteristics of sheet graphite and possible deviations, and improve the die-cutting quality; the precision and accuracy of die-cutting are improved, especially for the processing of the joint position, reducing the scrap rate; it can effectively improve the material utilization rate, and recycle the previously stagnant and scrapped sheet graphite.

[0077] Embodiment 2:

[0078] Based on Example 1, this example provides a die-cutting process for graphite flakes, such as Figure 2 As shown, in step 1, when opening the mold, position avoidance processing is performed between the circular knife punch and the circular knife die, including:

[0079] S101: Acquire a first shape feature of a circular knife punch, and at the same time, acquire a second shape feature of a circular knife die;

[0080] S102: Determine the relative nesting position of the circular knife punch and the circular knife die according to matching the first shape feature with the second shape feature;

[0081] S103: reading the first position information of the circular knife die, and determining the second position information of the circular knife punch according to the relative nesting position of the circular knife punch and the circular knife die;

[0082] S104: adjusting the positions of the circular knife punch and the circular knife die according to the first position information and the second position information, and avoiding the position between the circular knife punch and the circular knife die based on the position adjustment result.

[0083] In this embodiment, the first shape feature refers to the shape, size and other features of the circular knife punch.

[0084] In this embodiment, the second shape feature refers to the shape, size and other features of the circular knife die.

[0085] The working principle and beneficial effect of the above technical solution are: by respectively obtaining the unique shape characteristics of the circular knife punch and the circular knife die, the specific way in which the circular knife punch and the circular knife die are matched and nested with each other is effectively determined, so as to clarify the relative position relationship, which is conducive to effectively adjusting the position of the circular knife punch and the circular knife die through the first position information and the second position information, realizing position avoidance, effectively ensuring the safety and stability of the mold opening process, and preventing damage to the mold due to collision and other problems.

[0086] Embodiment 3:

[0087] Based on Example 1, this example provides a die-cutting process for graphite flakes, such as Figure 3 As shown, in step 2, after completing the position avoidance processing result and before performing circular knife die cutting, it includes:

[0088] S201: Obtaining a bearing area of ​​the graphite sheet;

[0089] S202: extracting first contour points of the bearing area, and at the same time, performing a first mapping of first boundary contour points of the bearing area in a preset three-dimensional rectangular coordinate system;

[0090] S203: Determine a first three-dimensional coordinate point set of a first contour point according to the first mapping result;

[0091] S204: extracting second boundary contour points of the graphite flakes, and at the same time, performing a second mapping on the second contour points of the graphite flakes in a preset three-dimensional rectangular coordinate system;

[0092] S205: Determine a second three-dimensional coordinate point set of second contour points according to the second mapping result;

[0093] S206: Matching the first three-dimensional coordinate point set with the second three-dimensional coordinate point set, determining whether the graphite sheet needs to be corrected in the bearing area, and performing a target operation on the graphite sheet according to the determination result.

[0094] In this embodiment, the first contour point is a boundary contour point of the bearing area, and the second contour point is a contour boundary point of the sheet graphite.

[0095] In this embodiment, the bearing area refers to the area position in the die cutting tool used to bear the graphite sheet.

[0096] The working principle and beneficial effects of the above technical solution are: by determining the bearing area of ​​the sheet graphite, the first three-dimensional coordinate point set is effectively determined, and at the same time, the second three-dimensional coordinate point set of the sheet graphite in the preset three-dimensional rectangular coordinate system is determined, and by matching the first three-dimensional coordinate point set with the second three-dimensional coordinate point set, the position of the sheet graphite is effectively corrected, thereby ensuring the accuracy of the sheet graphite in the initial position and ensuring the effectiveness of the die-cutting process of the sheet graphite.

[0097] Embodiment 4:

[0098] On the basis of Example 3, this embodiment provides a die-cutting process for sheet graphite, matches the first three-dimensional coordinate point set with the second three-dimensional coordinate point set, determines whether the sheet graphite needs to be corrected in the bearing area, and performs a target operation on the sheet graphite according to the determination result, including:

[0099] When the first three-dimensional coordinate point set matches the second three-dimensional coordinate point set, it is determined that the sheet graphite does not need to be positionally corrected in the bearing area, and at the same time, a circular knife die cutting instruction is generated, and a first target operation is performed on the sheet graphite according to the circular knife die cutting instruction;

[0100] When the first three-dimensional coordinate point set does not match the second three-dimensional coordinate point set, determining a target correction point and a target correction value for the second boundary contour point based on the first three-dimensional coordinate point set;

[0101] A second target operation is generated according to the target correction point and the target correction value, and the position of the second boundary contour point is corrected according to the second target operation. At the same time, a circular knife die cutting instruction is generated after the position correction, and the first target operation is performed on the sheet model according to the circular knife die cutting instruction.

[0102] In this embodiment, the first target operation may be a die cutting operation on sheet graphite.

[0103] In this embodiment, the second target operation may be to perform a position correction operation on the sheet graphite.

[0104] In this embodiment, the target correction point is a contour point with mismatches among the second boundary contour points, and the target correction value is based on the coordinate value that needs to be corrected.

[0105] The working principle and beneficial effect of the above technical solution are: by matching the first three-dimensional coordinate point set with the second three-dimensional coordinate point set, the target correction point and the target correction value are effectively obtained, thereby effectively ensuring the accuracy of executing the first target operation and the second target operation.

[0106] Embodiment 5:

[0107] On the basis of Example 1, this embodiment provides a die-cutting process for sheet graphite. In step 2, the joint position of the sheet graphite is identified based on a preset device, including:

[0108] Collecting image information of the graphite sheet according to a preset device, and determining boundary pixel points of the graphite sheet according to the image information of the graphite sheet;

[0109] The boundary pixel points of the graphite flake are read to determine the boundary line distribution characteristics of the graphite flake, and at the same time, the joint position of the graphite flake is determined according to the boundary line distribution characteristics of the graphite flake.

[0110] In this embodiment, the image information includes information such as the shape and contour of the graphite sheet.

[0111] In this embodiment, the boundary line distribution characteristics refer to the characteristics of the boundary line concave-convex points, smoothness, etc. of the boundary of the sheet graphite.

[0112] The working principle and beneficial effects of the above technical solution are: by collecting image information of sheet graphite through a preset device, the boundary pixel points of the sheet graphite are effectively obtained, and by determining the boundary line distribution characteristics of the sheet graphite, the joint position of the sheet graphite is accurately determined, thereby effectively ensuring the accuracy and integrity of die cutting.

[0113] Embodiment 6:

[0114] Based on Example 5, this embodiment provides a die-cutting process for graphite flakes, and determines the joint position of graphite flakes according to the boundary line distribution characteristics of the graphite flakes, including:

[0115] Reading the boundary lines of the graphite flakes, and determining the smoothness of each boundary line in the graphite flakes according to the boundary pixel points;

[0116] The smoothness of each boundary line was compared in flake graphite;

[0117] Locate the target boundary line whose smoothness is inconsistent with that of other boundary lines according to the comparison result, and at the same time, obtain a number of left convex points in the target boundary line and a number of right convex points in the target boundary line;

[0118] Pick out the largest left convex point from among the several left convex points on the target boundary line, and at the same time, pick out the largest right convex point from among the several right convex points on the target boundary point;

[0119] Determine a left joint position line parallel to the target boundary line based on the maximum left convex point, and at the same time, determine a right joint position line parallel to the target boundary line based on the maximum right convex point;

[0120] The joint position of the graphite sheet is determined according to the left joint position line and the right joint position line, wherein the area bounded by the left joint position line and the right joint position line is used as the joint position.

[0121] In this embodiment, the target boundary line is the interruption point of the graphite sheet.

[0122] In this embodiment, the joint position is an area formed by a left joint position line and a right joint position line.

[0123] The working principle and beneficial effects of the above technical solution are: the smoothness of each boundary line in the sheet graphite is determined by the boundary pixel points of the boundary line of the sheet graphite, so as to effectively locate the target boundary line, and the left joint position line and the right joint position line can be effectively determined by obtaining the maximum left convex point among several left convex points and the maximum right convex point among several right convex points in the target boundary line, thereby realizing effective positioning of the joint position, which helps to accurately determine the joint position of the sheet graphite.

[0124] Embodiment 7:

[0125] On the basis of Example 1, this embodiment provides a die-cutting process for sheet graphite. In step 3, the circular knife is controlled to stop rotating at the joint position according to the recognition result, and the circular knife is controlled to continue the die-cutting operation on the sheet graphite after the joint position is passed, including:

[0126] Read the recognition results to determine the area range of the joint position;

[0127] Obtaining a target direction of the circular knife at the joint position, and determining a starting boundary line and an ending boundary line in a region of the joint position according to the target direction of the circular knife at the joint position;

[0128] Obtain a first position value of a starting boundary line and a second position value of an ending boundary line in the same plane;

[0129] Monitor the dynamic position value of the circular knife;

[0130] When the dynamic position value of the circular knife coincides with the first position value, a stop rotation instruction is generated, and the circular knife is controlled to stop rotating according to the stop rotation instruction;

[0131] When the dynamic position value of the circular knife coincides with the second position value, a die-cutting instruction is generated, and the circular knife is controlled to continue the die-cutting operation on the graphite sheet according to the die-cutting instruction.

[0132] In this embodiment, the target direction is the direction in which the circular knife performs die cutting on the joint position.

[0133] In this embodiment, the first position value refers to the position information of the starting boundary line.

[0134] In this embodiment, the second position value refers to the position information of the termination boundary point.

[0135] The working principle and beneficial effects of the above technical solution are as follows: by determining the regional range of the joint position, the starting boundary line and the ending boundary line can be effectively determined, and then by determining the first position value of the starting boundary line and the second position value of the ending boundary line and comparing them with the dynamic position value of the circular knife respectively, the stop rotation instruction and the die-cutting instruction are accurately generated, which effectively improves the intelligence and precision of the die-cutting tool control when die-cutting sheet graphite, improves the precision and accuracy of die-cutting, especially for the processing of the joint position, and reduces the scrap rate.

[0136] Embodiment 8:

[0137] Based on Example 1, this embodiment provides a die-cutting process for sheet graphite. In step 4, gap compensation is performed on the non-joint position of the sheet graphite during the die-cutting operation according to the asynchronous operation function, including:

[0138] Obtaining a reference gap of the graphite sheet at a non-joint position, and collecting an actual gap of the graphite sheet at a non-joint position;

[0139] Match the reference gap with the actual gap to determine whether gap compensation is required;

[0140] When the actual gap is consistent with the reference gap, it is determined that gap compensation is not required;

[0141] Otherwise, it is determined that gap compensation is required, and at the same time, a target difference between the reference gap and the actual gap is obtained, and an asynchronous operation control instruction is generated according to the target difference;

[0142] The asynchronous operation function is controlled according to the asynchronous operation control instruction to perform gap compensation on the non-joint position of the sheet graphite during the die-cutting operation.

[0143] In this embodiment, the reference gap is set in advance and is used as a standard to measure whether gap compensation is required.

[0144] The beneficial effect of the above technical solution is that the gap compensation of non-joint positions is performed by using the asynchronous operation function, which can better adapt to the characteristics of sheet graphite and possible deviations and improve the die-cutting quality.

[0145] Embodiment 9:

[0146] On the basis of Example 1, this embodiment provides a die-cutting process for sheet graphite. In step 5, steps 2-4 are repeated until the die-cutting operation of the sheet graphite is completed, including:

[0147] Real-time monitoring of die-cutting operations on sheet graphite;

[0148] When the die-cutting operation of the sheet graphite reaches the tail end of the sheet graphite, an alarm reminder is issued, and at the same time, a stop work instruction is triggered based on the alarm reminder;

[0149] Control the die-cutting equipment to stop working according to the stop work instruction.

[0150] In this embodiment, the alarm reminder can be one or more of sound, light and vibration.

[0151] The beneficial effects of the above technical solution are: effectively controlling the die-cutting equipment to stop working, ensuring the intelligent operation of the die-cutting equipment and achieving the purpose of energy saving.

[0152] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A die-cutting process for graphite flakes, characterized in that: include: Step 1: When opening the mold, make position avoidance treatment between the circular knife punch and the circular knife die; Step 2: After completing the position avoidance processing result, circular knife die cutting is performed, and the joint position of the sheet graphite is identified based on the preset device; Step 3: Control the circular knife to stop rotating at the joint position according to the recognition result, and control the circular knife to continue die-cutting the graphite sheet after the joint position is passed; Step 4: Perform gap compensation on the non-joint position of the sheet graphite during die-cutting operation according to the asynchronous operation function; Step 5: Repeat steps 2-4 until the die-cutting operation of the graphite sheet is completed.

2. A die-cutting process for graphite flakes according to claim 1, characterized in that: In step 1, when opening the mold, it includes: Increase the spacing of the die-cutting circular knives to meet the target conditions; The target condition is that the die-cutting circular knife can pass through the material belt and the blade will not scrape the graphite sheet. At the same time, the spacing of the die-cutting circular knife is compensated asynchronously by the equipment.

3. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 1, when the mold is opened, position avoidance processing is performed between the circular knife punch and the circular knife die, including: Acquire a first shape feature of the circular knife punch, and at the same time, acquire a second shape feature of the circular knife die; According to the matching of the first shape feature and the second shape feature, the relative nesting position of the circular knife punch and the circular knife die is determined; Reading the first position information of the circular knife die, and at the same time, determining the second position information of the circular knife punch according to the relative nesting position of the circular knife punch and the circular knife die; The positions of the circular knife punch and the circular knife die are adjusted according to the first position information and the second position information, and the position avoidance between the circular knife punch and the circular knife die is achieved based on the position adjustment result.

4. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 2, after the position avoidance processing result is completed and before the circular knife die cutting is performed, it includes: Obtaining the bearing area of ​​the flake graphite; Extracting first contour points of the bearing area, and at the same time, performing a first mapping of first boundary contour points of the bearing area in a preset three-dimensional rectangular coordinate system; Determine a first three-dimensional coordinate point set of a first contour point according to the first mapping result; Extracting second boundary contour points of the graphite flakes, and at the same time, performing a second mapping on the second contour points of the graphite flakes in a preset three-dimensional rectangular coordinate system; Determine a second three-dimensional coordinate point set of second contour points according to the second mapping result; The first three-dimensional coordinate point set is matched with the second three-dimensional coordinate point set to determine whether the graphite sheet needs to be corrected in position on the bearing area, and at the same time, a target operation is performed on the graphite sheet according to the determination result.

5. The die-cutting process of graphite flakes according to claim 4, characterized in that: The first three-dimensional coordinate point set is matched with the second three-dimensional coordinate point set to determine whether the sheet graphite needs to be corrected in the bearing area, and at the same time, a target operation is performed on the sheet graphite according to the determination result, including: When the first three-dimensional coordinate point set matches the second three-dimensional coordinate point set, it is determined that the sheet graphite does not need to be positionally corrected in the bearing area, and at the same time, a circular knife die-cutting instruction is generated, and a first target operation is performed on the sheet graphite according to the circular knife die-cutting instruction; When the first three-dimensional coordinate point set does not match the second three-dimensional coordinate point set, determining a target correction point and a target correction value for the second boundary contour point based on the first three-dimensional coordinate point set; A second target operation is generated according to the target correction point and the target correction value, and the position of the second boundary contour point is corrected according to the second target operation. At the same time, a circular knife die cutting instruction is generated after the position correction, and the first target operation is performed on the sheet model according to the circular knife die cutting instruction.

6. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 2, the joint position of the graphite sheet is identified based on a preset device, including: Collecting image information of the graphite sheet according to a preset device, and determining boundary pixel points of the graphite sheet according to the image information of the graphite sheet; The boundary pixel points of the graphite flake are read to determine the boundary line distribution characteristics of the graphite flake, and at the same time, the joint position of the graphite flake is determined according to the boundary line distribution characteristics of the graphite flake.

7. A die-cutting process for graphite flakes according to claim 6, characterized in that: Determine the joint position of the flake graphite according to the boundary line distribution characteristics of the flake graphite, including: Reading the boundary lines of the graphite flakes, and determining the smoothness of each boundary line in the graphite flakes according to the boundary pixel points; The smoothness of each boundary line was compared in flake graphite; Locate the target boundary line whose smoothness is inconsistent with that of other boundary lines according to the comparison result, and at the same time, obtain a number of left convex points in the target boundary line and a number of right convex points of the target boundary line; Pick out the largest left convex point among several left convex points on the target boundary line, and at the same time, pick out the largest right convex point among several right convex points on the target boundary point; Determine a left joint position line parallel to the target boundary line based on the maximum left convex point, and at the same time, determine a right joint position line parallel to the target boundary line based on the maximum right convex point; The joint position of the graphite sheet is determined according to the left joint position line and the right joint position line, wherein the area bounded by the left joint position line and the right joint position line is used as the joint position.

8. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 3, the circular knife is controlled to stop rotating at the joint position according to the recognition result, and the circular knife is controlled to continue die-cutting the graphite sheet after the joint position is passed, including: Read the recognition results to determine the area range of the joint position; Obtaining a target direction of the circular knife at the joint position, and determining a starting boundary line and an ending boundary line in a region of the joint position according to the target direction of the circular knife at the joint position; Obtain a first position value of a starting boundary line and a second position value of an ending boundary line in the same plane; Monitor the dynamic position value of the circular knife; When the dynamic position value of the circular knife coincides with the first position value, a stop rotation instruction is generated, and the circular knife is controlled to stop rotating according to the stop rotation instruction; When the dynamic position value of the circular knife coincides with the second position value, a die-cutting instruction is generated, and the circular knife is controlled to continue the die-cutting operation on the graphite sheet according to the die-cutting instruction.

9. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 4, gap compensation is performed on the non-joint position of the sheet graphite during the die-cutting operation according to the asynchronous operation function, including: Obtaining a reference gap of the graphite sheet at a non-joint position, and collecting an actual gap of the graphite sheet at a non-joint position; Match the reference gap with the actual gap to determine whether gap compensation is required; When the actual gap is consistent with the reference gap, it is determined that gap compensation is not required; Otherwise, it is determined that gap compensation is required, and at the same time, a target difference between the reference gap and the actual gap is obtained, and an asynchronous operation control instruction is generated according to the target difference; The asynchronous operation function is controlled according to the asynchronous operation control instruction to perform gap compensation on the non-joint position of the sheet graphite during the die-cutting operation.

10. The die-cutting process of graphite flakes according to claim 1, characterized in that: In step 5, steps 2-4 are repeated until the die-cutting operation of the sheet graphite is completed, including: Real-time monitoring of die-cutting operations on sheet graphite; When the die-cutting operation of the sheet graphite reaches the tail end of the sheet graphite, an alarm reminder is issued, and at the same time, a stop work instruction is triggered based on the alarm reminder; Control the die-cutting equipment to stop working according to the stop work instruction.

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