Punching equipment for punching and marking flexible rolled plates with different thicknesses

Abstract

According to the punching equipment for punching and marking the unequal-thickness flexible rolled plates, only the unequal-thickness flexible rolled plates need to be placed on the first die, and when the detection unit detects that the unequal-thickness steel plates in the unequal-thickness flexible rolled plates are in place within a single plate length period, the unequal-thickness steel plates are punched and marked. The controller controls the driving mechanism to drive the lifting assembly to move downwards, so that at least two rows of punches on the second die conduct punching marking on the flexible rolling plates with the different thicknesses, and the punching marking area between every two adjacent rows of punched holes is the area of the steel plates with the different thicknesses in the single plate length period in the flexible rolling plates with the different thicknesses. Therefore, the unequal-thickness steel plate area in each single plate length period in the unequal-thickness flexible rolled plate can be conveniently and quickly divided. In addition, the labor intensity of workers can be relieved, the accuracy and consistency of measuring and marking of the unequal-thickness steel plate areas in the single plate length period are guaranteed, and the working efficiency of measuring and marking of the unequal-thickness steel plate areas in the single plate length period is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel plate processing, and in particular relates to a punching device used for punching marks of flexible rolled plates of unequal thickness. Background Art

[0002] In order to facilitate production, storage and transportation, flexible rolled plates of unequal thickness are generally produced by continuous rolling in a predetermined plate length cycle to form flexible rolled plates of length L, wherein the length of the unequal thickness steel plate within a single plate length cycle is D, and the thickness distribution of the unequal thickness steel plate within a single plate length cycle is 1.2mm→2.1mm→1.2mm. In the automotive field, in order to meet the requirements of both strength and lightness, the sheet metal used in the car body generally needs to use unequal thickness steel plates within a single plate length cycle. This requires finding and cutting out the unequal thickness steel plates in the flexible rolled plate of length L.

[0003] At present, the unequal thickness steel plates within a single plate length period in a flexible rolled plate having a length of L are generally measured and marked manually, and then the flexible rolled plate is cut according to the previously measured and marked area. However, the above-mentioned manual measurement and marking of the unequal thickness steel plates within a single plate length period in a flexible rolled plate having a length of L not only makes it difficult to ensure the accuracy and consistency of the measurement and marking, but also has the problems of high labor intensity of the staff and low working efficiency of the measurement and marking. Utility Model Content

[0004] Based on the above-mentioned problems existing in the prior art, one of the purposes of the embodiments of the utility model is to provide a punching device for punching and marking of flexible rolled plates of unequal thicknesses, so as to solve the problem in the prior art that manually measuring and marking the unequal thickness steel plates in a single plate of flexible rolled plates of unequal thicknesses over a long period of time is not only difficult to ensure the accuracy and consistency of the measurement and marking, but also leads to low efficiency of the measurement and marking work.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a punching device for punching marks on flexible rolled plates of unequal thickness, comprising:

[0006] a first support platform;

[0007] A first mold, disposed on the first supporting platform;

[0008] A second die is arranged above the first die, and the second die is provided with at least two rows of punches for punching and marking flexible rolled plates of unequal thickness;

[0009] A lifting assembly, used for driving the second die to move downward so that the punch on the second die punches holes in the flexible rolled plates of unequal thickness, the lifting assembly being arranged on the first supporting platform;

[0010] A driving mechanism, used for driving the lifting assembly to move up and down; and

[0011] A detection component, comprising a detection unit for detecting whether the unequal thickness steel plates within a single plate long period of the unequal thickness flexible rolled plate are in place and a controller for controlling the operation of the driving mechanism according to information detected by the detection unit;

[0012] The spacing between the punches in two adjacent rows is equal, and the spacing between the punches in two adjacent rows is equal to the length of the unequal thickness steel plate within a single plate length period in the unequal thickness flexible rolled plate.

[0013] Furthermore, the detection unit includes a laser measurement sensor for measuring the length of unequal thickness steel plates within a single plate length period in unequal thickness flexible rolled plates and a laser marking sensor for marking the length area of ​​unequal thickness steel plates within a single plate length period in unequal thickness flexible rolled plates.

[0014] Furthermore, the first die is provided with an avoidance hole for avoiding the punch.

[0015] Furthermore, the second mold is provided with a limit plate for limiting the punching depth of the punch, and is provided with a through hole for the punch to pass through. The punch passes through the corresponding through hole, and the length of the punch extending out of the through hole is greater than the maximum thickness of the unequal thickness steel plates within a single plate length period, and the length of the punch extending out of the through hole is less than the depth of the avoidance hole.

[0016] Furthermore, the punching equipment for punching marks of flexible rolled plates of unequal thickness also includes a chip collecting structure for collecting waste generated by punching, the chip collecting structure including a chip collecting funnel arranged below the first mold, a chip removal channel arranged on the first support platform, and a chip removal groove connected to the chip removal channel, the avoidance hole is a through hole, the avoidance hole is located above the chip collecting funnel so that the waste generated by punching can fall into the chip collecting funnel through the avoidance hole, and the discharge port at the bottom end of the chip collecting funnel is connected to the chip removal channel.

[0017] Furthermore, the chip collecting structure also includes a chip guide inclined plate connected to the chip discharge groove and two guide plates respectively arranged on both sides of the chip guide inclined plate, and the distance between the two guide plates gradually decreases in the direction away from the chip discharge groove.

[0018] Furthermore, the lifting assembly includes at least two guide columns vertically and spaced apart on the first support platform and a lifting platform that can move up and down, and the lifting platform is respectively provided with sliding holes for slidingly cooperating with each of the guide columns, and each of the sliding holes is sleeved on the corresponding guide column so that the guide column can guide the lifting platform to move up and down.

[0019] Furthermore, the driving mechanism includes a second supporting platform arranged at the top ends of the at least two guide columns and a linear driver for driving the lifting platform to move up and down, and the linear driver is arranged on the second supporting platform.

[0020] Furthermore, the linear drive is a hydraulic cylinder, the rigid body of the hydraulic cylinder is fixedly connected to the second supporting platform, and the piston rod of the hydraulic cylinder is connected to the lifting platform.

[0021] Furthermore, in the same row of punches, the intervals between two adjacent punches are equal.

[0022] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0023] The punching device for punching and marking flexible rolled plates of unequal thickness in the embodiment of the utility model only needs to place the flexible rolled plates of unequal thickness on the first mold, and use the detection unit to automatically detect whether the unequal thickness steel plates within a single plate length period in the flexible rolled plates of unequal thickness are in place. When the detection unit detects that the unequal thickness steel plates within a single plate length period in the flexible rolled plates of unequal thickness are in place, the controller controls the driving mechanism to drive the lifting assembly to move downward, so that at least two rows of punches on the second mold perform punching and marking on the flexible rolled plates of unequal thickness, and the punching and marking area between two adjacent rows of punches is the area of ​​the unequal thickness steel plates within a single plate length period in the flexible rolled plates of unequal thickness, so that the area of ​​the unequal thickness steel plates within each single plate length period in the flexible rolled plates of unequal thickness can be conveniently and quickly divided. In addition, the labor intensity of the staff can be greatly reduced, the accuracy and consistency of the measurement and marking of the unequal thickness steel plate area within a single plate length period can be ensured, and the work efficiency of the measurement and marking of the unequal thickness steel plate area within a single plate length period can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A schematic side view of the structure of a punching device for punching marks on flexible rolled plates of unequal thickness provided by the utility model;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of a punching device for punching marks on flexible rolled plates of unequal thickness provided by the utility model;

[0027] Figure 3 An exploded view of a punching device for punching marks on flexible rolled plates of unequal thickness provided by the utility model;

[0028] Figure 4 An assembly diagram of the first mold and the second mold provided by the utility model;

[0029] Figure 5 An exploded view of a second mold provided by the utility model;

[0030] Figure 6 A schematic diagram of the three-dimensional structure of the first mold provided by the utility model;

[0031] Figure 7 A schematic diagram of the structure of the chip collecting structure provided by the utility model;

[0032] Figure 8 A schematic diagram of the unequal thickness flexible rolled plate provided by the utility model having punching marks.

[0033] Among them, the reference numerals in the figure are:

[0034] 1-first support platform; 2-first mold; 21-avoidance hole; 22-support column;

[0035] 3-second die; 31-punch; 32-limiting plate; 33-through hole; 34-elastic buffer mechanism;

[0036] 4-lifting assembly; 41-guide column; 42-lifting platform; 43-bushing;

[0037] 5-driving mechanism; 51-second supporting platform; 52-linear drive;

[0038] 6-chip collecting structure; 61-chip collecting funnel; 62-chip removal channel; 63-chip removal groove; 64-chip guide inclined plate; 65-guide plate;

[0039] 7-detection component; 8-punching;

[0040] 9-Steel plates of unequal thickness within a single plate long period; 10-Flexibly rolled plates of unequal thickness. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 the present utility model can be understood according to specific circumstances.

[0046] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0047] Please also read Figures 1 to 8 , now the punching device for punching marks of unequal thickness flexible rolled plates 10 provided by the embodiment of the utility model is described. The punching device for punching marks of unequal thickness flexible rolled plates 10 provided by the embodiment of the utility model comprises a first support platform 1, a first die 2, a second die 3, a lifting assembly 4, a driving mechanism 5 and a detection assembly 7. The first die 2 is arranged on the first support platform 1, the second die 3 is arranged above the first die 2, and the second die 3 is provided with at least two rows of punches 31 for punching marks of unequal thickness flexible rolled plates 10. The lifting assembly 4 is used to drive the second die 3 to move downward so that the punches 31 on the second die 3 punch the unequal thickness flexible rolled plates 10. The lifting assembly 4 is arranged on the first support platform 1, the second die 3 is arranged on the lifting assembly 4, and the driving mechanism 5 is used to drive the lifting assembly 4 to move up and down. The detection assembly 7 comprises a detection unit for detecting whether the unequal thickness steel plates 9 in the single plate long period of the unequal thickness flexible rolled plates 10 are in place and a controller for controlling the operation of the driving mechanism 5 according to the information detected by the detection unit. The spacing between two adjacent rows of punches 31 is equal, and the spacing between two adjacent rows of punches 31 is equal to the length of the unequal thickness steel plate 9 within a single plate length period in the unequal thickness flexible rolled plate 10 .

[0048] When the punching device for punching marks on unequal thickness flexible rolled plates 10 provided by the embodiment of the utility model is working, it is only necessary to place the unequal thickness flexible rolled plates 10 on the first mold 2. When the detection unit detects that the unequal thickness steel plates 9 within a single plate long period of the unequal thickness flexible rolled plates 10 are in place, the controller controls the driving mechanism 5 to drive the lifting assembly 4 to move downward, and the lifting assembly 4 drives the second mold 3 and the punch 31 on the second mold 3 to move downward, so that at least two rows of punches 31 on the second mold 3 punch the unequal thickness flexible rolled plates 10. Mark, since the spacing between two adjacent rows of punches 31 is equal, and the spacing between two adjacent rows of punches 31 is equal to the length of the unequal thickness steel plate 9 within a single plate length period in the unequal thickness flexible rolled plate 10, then the area between two adjacent rows of punching holes 8 is the area of ​​the unequal thickness steel plate 9 within a single plate length period in the unequal thickness flexible rolled plate 10, so that the area of ​​the unequal thickness steel plate 9 within each single plate length period in the unequal thickness flexible rolled plate 10 can be conveniently divided, so that the subsequent process can be cut according to the area divided by the punching holes. After the punch 31 on the second mold 3 completes the punching of the unequal thickness flexible rolled plate 10, the controller controls the drive mechanism 5 to drive the lifting assembly 4 to move upward, and the lifting assembly 4 drives the second mold 3 and the punch 31 on the second mold 3 to move upward until the punch 31 on the second mold 3 moves to the initial position, ready for the next punching process.

[0049] The flexible rolled plate winding device that is convenient for removing the steel coil provided by the embodiment of the utility model, compared with the prior art, only needs to place the unequal thickness flexible rolled plate 10 on the first mold 2, and use the detection unit to automatically detect whether the unequal thickness steel plates 9 within a single plate length period in the unequal thickness flexible rolled plate 10 are in place. After the detection unit detects that the unequal thickness steel plates 9 within a single plate length period in the unequal thickness flexible rolled plate 10 are in place, the controller controls the drive mechanism 5 to drive the lifting assembly 4 to move downward, so that at least two rows of punches 31 on the second mold 3 punch and mark the unequal thickness flexible rolled plate 10, and the punch mark area between two adjacent rows of punches is the area of ​​the unequal thickness steel plates 9 within a single plate length period in the unequal thickness flexible rolled plate 10, so that the area of ​​the unequal thickness steel plates 9 within each single plate length period in the unequal thickness flexible rolled plate 10 can be conveniently and quickly divided. In addition, the labor intensity of the staff can be greatly reduced, the accuracy and consistency of the measurement and marking of the unequal thickness steel plate 9 area within a single plate length period can be ensured, and the work efficiency of the measurement and marking of the unequal thickness steel plate 9 area within a single plate length period can be significantly improved.

[0050] Optionally, in some of the embodiments, in order to further improve the accuracy and consistency of the measurement and marking of the unequal thickness steel plates 9 area within a single plate length period, the detection unit includes a laser measurement sensor and a laser marking sensor, and the laser measurement sensor is used to measure the plate lengths of the unequal thickness steel plates 9 within a single plate length period in the unequal thickness flexible rolled plates 10, and the laser marking sensor is used to mark the plate length areas of the unequal thickness steel plates 9 within a single plate length period in the unequal thickness flexible rolled plates 10. Specifically, after the laser measurement sensor accurately measures the area of ​​the unequal thickness steel plate 9 within a single plate length period, the laser marking sensor then marks the area of ​​the unequal thickness steel plate 9 within the single plate length period. When the positions of at least two rows of punches 31 on the second mold 3 coincide with the marked area of ​​the unequal thickness steel plate 9 within a single plate length period, the controller controls the drive mechanism 5 to drive the lifting assembly 4 to move downward, so that at least two rows of punches 31 on the second mold 3 perform punching marks on the unequal thickness flexible rolled plate 10. The punching mark area between two adjacent rows of punches is the area of ​​the unequal thickness steel plate 9 within a single plate length period in the unequal thickness flexible rolled plate 10, so that the areas of the unequal thickness steel plates 9 within each single plate length period in the unequal thickness flexible rolled plate 10 can be conveniently and quickly divided. It should be noted that in order to further improve the accuracy and consistency of the measurement and marking of the area of ​​unequal thickness steel plates 9 within a single plate length period, the detection unit also includes a laser for detecting whether the positions of at least two rows of punches 31 on the second mold 3 are completely consistent with the marking area of ​​unequal thickness steel plates 9 within a single plate length period.

[0051] Please refer to Figure 6 In some of the embodiments, in order to prevent at least two rows of punches 31 on the second die 3 from being damaged by a huge impact, avoidance holes 21 for avoiding the punches 31 are provided on the first die 2. After at least two rows of punches 31 on the second die 3 punch the flexible rolled plates 10 of different thicknesses, each punch 31 can be inserted into the corresponding avoidance hole 21.

[0052] Please refer to Figure 2 , Figure 4 and Figure 5In some embodiments, a limiting plate 32 for limiting the punching depth of the punch 31 is provided on the second die 3, and a through hole 33 for the punch 31 to pass through is provided on the limiting plate 32. The punch 31 passes through the corresponding through hole 33, and the length of the punch 31 extending from the through hole 33 is greater than the maximum thickness of the unequal thickness steel plate 9 within a single plate long period, and the length of the punch 31 extending from the through hole 33 is less than the depth of the avoidance hole 21. After at least two rows of punches 31 on the second die 3 punch the unequal thickness flexible rolled sheet 10, the limiting plate 32 contacts the unequal thickness flexible rolled sheet 10, so as to avoid the second die 3 from scratching and damaging the unequal thickness flexible rolled sheet 10, and at the same time limit the punching depth of the punch 31, so as to avoid the punch 31 from causing excessive impact on the unequal thickness flexible rolled sheet 10. It should be noted that an elastic buffer mechanism 34 is provided between the limiting plate 32 and the second die 3, and the elastic buffer mechanism 34 is used to mitigate the impact of the limiting plate 32 on the unequal thickness flexible rolled sheet 10.

[0053] Please refer to Figure 2 , Figure 3 and Figure 6 In some of the embodiments, in order to facilitate the timely discharge and collection of waste generated by punching, the punching equipment for punching marks of flexible rolled plates 10 of unequal thickness also includes a chip collecting structure 6 for collecting waste generated by punching. The chip collecting structure 6 includes a chip collecting funnel 61 arranged below the first mold 2, a chip removal channel 62 arranged on the first support platform 1, and a chip removal groove 63 connected to the chip removal channel 62. The avoidance hole 21 is a through hole 33. The avoidance hole 21 is located above the chip collecting funnel 61 so that the waste generated by punching can fall into the chip collecting funnel 61 through the avoidance hole 21. The discharge port at the bottom of the chip collecting funnel 61 is connected to the chip removal channel 62. Specifically, after the waste material (waste chips) generated by punching is pushed to the avoidance hole 21 by the punch 31, the waste material (waste chips) falls into the chip collecting funnel 61 below under the action of its own gravity. When the waste chips in the chip collecting funnel 61 are concentrated to a certain amount, under the vibration caused by the punching of the punch 31, the waste chips in the chip collecting funnel 61 can be discharged to the chip removal groove 63 through the chip removal channel 62. There is no need to shut down the punching equipment during the chip removal process, and the waste chips can be more easily dropped into the chip removal groove 63 for collection.

[0054] Please refer to Figure 2 , Figure 3 and Figure 7In some of the embodiments, the chip collecting structure 6 also includes a chip guide ramp 64 connected to the chip removal groove 63 and two guide plates 65 respectively arranged on both sides of the chip guide ramp 64. The spacing between the two guide plates 65 gradually decreases in the direction away from the chip removal groove 63, which can reduce the exit area of ​​the waste chips falling onto the chip guide ramp 64, and reduce the waste chips in the chip guide ramp 64 from being blown out of the chip guide ramp 64 under the influence of other factors such as wind force, thereby indirectly improving the chip removal effect, so that the waste chips formed by punching can slide along the chip guide ramp 64 to the waste chip transfer container connected to the chip guide ramp 64.

[0055] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, in order to enhance the stability of the lifting assembly 4 moving up and down so as to improve the accuracy and consistency of punching, the lifting assembly 4 includes at least two guide posts 41 vertically and spaced apart on the first support platform 1 and a lifting platform 42 that can move up and down, and the lifting platform 42 is respectively provided with sliding holes for slidingly cooperating with each guide post 41, and each sliding hole is sleeved on the corresponding guide post 41, so that the guide post 41 can guide the lifting platform 42 to move up and down. When it is necessary to explain, a bushing 43 is provided at the contact portion between the guide post 41 and the sliding hole.

[0056] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the driving mechanism 5 includes a second support platform 51 disposed at the top of at least two guide columns 41 and a linear drive 52 for driving the lifting platform 42 to move up and down, and the linear drive 52 is disposed on the second support platform 51.

[0057] Optionally, in some embodiments, the linear drive 52 is a hydraulic cylinder, a rigid body of the hydraulic cylinder is fixedly connected to the second support platform 51 , and a piston rod of the hydraulic cylinder is connected to the lifting platform 42 .

[0058] Please refer to Figure 4 and Figure 5 In some embodiments, in the same row of punches 31, the spacing between two adjacent punches 31 is equal, so that the flexible rolled plate 10 of unequal thickness is subjected to uniform force during the punching process, and the error of the punching mark of the unequal thickness steel plate 9 within a single plate long period is reduced. In order to enhance the stability between the first mold 2 and the second mold 3, a plurality of support columns 22 are provided between the first mold 2 and the second mold 3.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching device for punching marks on flexible rolled plates of unequal thickness, characterized in that: include: a first support platform; A first mold, disposed on the first supporting platform; A second die is arranged above the first die, and the second die is provided with at least two rows of punches for punching and marking flexible rolled plates of unequal thickness; A lifting assembly, used for driving the second die to move downward so that the punch on the second die punches holes in the flexible rolled plates of unequal thickness, the lifting assembly being arranged on the first supporting platform; A driving mechanism, used for driving the lifting assembly to move up and down; as well as A detection component, comprising a detection unit for detecting whether the unequal thickness steel plates within a single plate long period of the unequal thickness flexible rolled plate are in place and a controller for controlling the operation of the driving mechanism according to information detected by the detection unit; The spacing between the punches in two adjacent rows is equal, and the spacing between the punches in two adjacent rows is equal to the length of the unequal thickness steel plate within a single plate length period in the unequal thickness flexible rolled plate.

2. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 1, characterized in that: The detection unit includes a laser measurement sensor for measuring the length of unequal thickness steel plates within a single plate length period in unequal thickness flexible rolled plates and a laser marking sensor for marking the length area of ​​unequal thickness steel plates within a single plate length period in unequal thickness flexible rolled plates.

3. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 1, characterized in that: The first die is provided with an avoidance hole for avoiding the punch.

4. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 3, characterized in that: The second mold is provided with a limit plate for limiting the punching depth of the punch, and is provided with a through hole for the punch to pass through. The punch passes through the corresponding through hole, and the length of the punch extending out of the through hole is greater than the maximum thickness of the unequal thickness steel plates within a single plate length period, and the length of the punch extending out of the through hole is less than the depth of the avoidance hole.

5. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 3, characterized in that: The punching equipment for punching marks on flexible rolled plates of unequal thickness also includes a chip collecting structure for collecting waste generated by punching, the chip collecting structure includes a chip collecting funnel arranged below the first mold, a chip removal channel arranged on the first support platform, and a chip removal groove connected to the chip removal channel, the avoidance hole is a through hole, the avoidance hole is located above the chip collecting funnel so that the waste generated by punching can fall into the chip collecting funnel through the avoidance hole, and the discharge port at the bottom end of the chip collecting funnel is connected to the chip removal channel.

6. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 5, characterized in that: The chip collecting structure also includes a chip guide inclined plate connected to the chip discharge groove and two guide plates respectively arranged on both sides of the chip guide inclined plate, and the distance between the two guide plates gradually decreases in the direction away from the chip discharge groove.

7. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 1, characterized in that: The lifting assembly includes at least two guide columns vertically and spaced apart on the first support platform and a lifting platform that can move up and down. The lifting platform is respectively provided with sliding holes for slidingly cooperating with each of the guide columns. Each of the sliding holes is sleeved on the corresponding guide column so that the guide column can guide the lifting platform to move up and down.

8. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 7, characterized in that: The driving mechanism comprises a second supporting platform arranged at the top ends of the at least two guide pillars and a linear driver for driving the lifting platform to move up and down, and the linear driver is arranged on the second supporting platform.

9. The punching device for punching marks on flexible rolled plates of unequal thickness as claimed in claim 8, characterized in that: The linear drive is a hydraulic cylinder, the rigid body of the hydraulic cylinder is fixedly connected to the second supporting platform, and the piston rod of the hydraulic cylinder is connected to the lifting platform.

10. The punching device for punching marks on flexible rolled plates of unequal thickness according to any one of claims 1 to 9, characterized in that: In the same row of punches, the intervals between two adjacent punches are equal.

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