Punch, punching system and punching method

Abstract

The invention provides a punch, a stamping system and a stamping method, the punch is used for upwards stamping a material into a groove in a die in the gravity direction, the punch comprises a first end face facing the groove, and the area of the first end face is larger than or equal to the area of a groove opening of the groove. According to the embodiment, the area of the punch on the first end face is controlled to be larger than or equal to the notch area of the groove, so that the area of the formed material hole is larger than or equal to the outer diameter of the product, when the product falls down from the material hole, resistance borne by the product is small, and the probability of extrusion and collision between the product and the material hole is reduced; therefore, the conditions of deformation, burrs or scratches of products are reduced, and the yield of the products is improved. And the punch only pushes the material into the groove without entering the groove, so that the friction between the punch and the groove is reduced, the probability of collision between the punch and the die is reduced, and the service life of the die and the punch is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping and forming, and in particular to a punch, a stamping system and a stamping method. Background Art

[0002] Stamping is a forming process in which a press and a die are used to apply external force to plates, strips, pipes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece (stamping part) of the desired shape and size. The blanks used for stamping are mainly hot-rolled and cold-rolled steel plates and strips. 60-70% of the world's steel is sheet metal, most of which is stamped into finished products. Automobile bodies, chassis, fuel tanks, radiators, boiler drums, container casings, motors, electrical appliances, and iron core silicon steel sheets are all stamped. A large number of stamping parts are also found in products such as instruments and meters, household appliances, bicycles, office machinery, and daily utensils. The punch is an important part in stamping equipment, and some stamping parts require the punch to be punched upwards.

[0003] In the related art, the product punched out by the punch is easily squeezed by the waste hole, causing the punched section of the stamped part to be squeezed, or to produce burrs and deformation. Summary of the Invention

[0004] An embodiment of the present invention provides a punch that can improve the technical problem of low end surface evenness of stamping parts in the related art.

[0005] In a first aspect, an embodiment of the present invention provides a punch for punching material upward along the direction of gravity into a groove in a mold, the punch including a first end face facing the groove, the area of ​​the first end face being greater than or equal to the area of ​​the notch of the groove.

[0006] In one embodiment, the cross-sectional area of ​​the punch gradually increases as the punch moves away from the die.

[0007] In one embodiment, the punch is in a truncated cone shape, and the angle between the generatrix of the punch and the first end face is greater than or equal to 70° and less than or equal to 90°.

[0008] In one embodiment, along the first direction, a difference between a length of the first end surface and a length of the notch is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

[0009] In a third aspect, an embodiment of the present invention provides a stamping system, comprising:

[0010] a mold provided with a groove; and,

[0011] As described in the aforementioned embodiment, the punch is arranged below the mold corresponding to the mold, so as to be used to punch at least a portion of the material plate upward into the groove along the direction of gravity, so that the material plate is divided into a first part located in the groove and a second part located outside the groove and connected to the first part.

[0012] In one embodiment, the mold comprises:

[0013] a main body, the main body being provided with a receiving cavity; and,

[0014] a movable member, the movable member being disposed in the accommodating cavity and being movable along an extending direction of the accommodating cavity;

[0015] The cavity side wall of the accommodating cavity and the end surface of the movable member can form the groove, and the movable member can push the first component to leave the groove.

[0016] In one embodiment, the stamping system further includes a moving device, and the moving device is used to move the first component and the second component to a blanking station.

[0017] In one embodiment, the stamping system further includes a pushing device, which is provided corresponding to the unloading station and is used to push the first component and separate the first component from the second component.

[0018] In a third aspect, an embodiment of the present invention provides a stamping method, which is applied to the stamping system described in the above embodiment, and the stamping method includes:

[0019] In the direction of gravity, the punch presses at least a portion of the material plate upward into the groove, so that the material plate is divided into a first part located in the groove and a second part located outside the groove and connected to the first part;

[0020] Moving the first component and the second component to a blanking station;

[0021] The first component is pushed and separated from the second component.

[0022] In one embodiment, the punch punching at least a portion of the material plate upward into the groove comprises:

[0023] The punch presses upwards to force at least a portion of the material plate into the groove, and stops pressing upwards when the distance between the punch and the notch of the groove is a first distance.

[0024] In one embodiment, the first distance is less than or equal to 0.5 mm.

[0025] In one embodiment, before the moving device moves the first component and the second component to the unloading station, it further includes:

[0026] The movable part of the mold pushes the first component away from the groove and pushes the first component to move toward the second component.

[0027] Beneficial effects of the embodiments of the present invention:

[0028] In the embodiment of the present invention, the area of ​​the punch on the first end face is controlled to be greater than or equal to the notch area of ​​the groove, so that the area of ​​the material hole formed is greater than or equal to the outer diameter of the product. When the product falls from the material hole, the product is subject to less resistance, and the probability of extrusion and collision between the product and the material hole is reduced, thereby reducing deformation, burrs or scratches on the product and improving the product yield. In addition, in traditional stamping, the intrusion of the punch into the groove will cause the material to be pushed a long distance, tearing between the side wall of the material hole and the product, and forming a broken surface on the surface of the product. In the embodiment of the present invention, the main function of the punch is to push the material, and the stamping can be completed without intruding into the groove, which reduces material tearing and makes the appearance of the product smoother. In addition, the punch only pushes the material into the groove without entering the groove itself, which reduces the friction between the punch and the groove, reduces the probability of collision between the punch and the mold, and extends the service life of the mold and punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a cross-sectional view of a punch provided by an embodiment of the present invention;

[0031] Figure 2 is a cross-sectional view of a mold provided by an embodiment of the present invention;

[0032] Figure 3 Schematic diagram of the working state of the punch and die provided by an embodiment of the present invention;

[0033] Figure 4 It is a flow chart of the stamping method provided by an embodiment of the present invention.

[0034] The numbers in the figure are:

[0035] 1. Punch;

[0036] 11. First end surface;

[0037] 2. Mould;

[0038] 21. groove; 22. main body; 23. movable part;

[0039] 3. Material plate; 31. First component; 32. Second component;

[0040] H1. Direction of gravity. DETAILED DESCRIPTION

[0041] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0042] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0043] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0044] In the related art, the punch 1 needs to be inserted into the die to complete the blanking, so the diameter of the punch 1 is smaller than the die aperture, which also makes the punched waste hole smaller than the product. Since the waste hole must be passed when pushing back or knocking down the product, the resistance to returning the material is large, which can easily cause the blanking section of the product to be squeezed, or produce burrs and deformation.

[0045] Based on this, the first aspect of the present invention provides a punch 1, referring to Figures 1 to 3 , used to punch the material upward along the gravity direction H1 into the groove 21 in the mold 2, the punch 1 includes a first end face 11 facing the groove 21, and the area of ​​the first end face 11 is greater than or equal to the area of ​​the notch of the groove 21.

[0046] During specific use, the punch 1 first impacts the material on the material plate 3 upward, pressing the material into the groove 21 of the mold 2 to form a product with the same shape as the groove 21. At this time, a material hole with the same shape as the punch 1 is formed on the material plate 3, and then the product in the groove 21 is pushed out through other pushing structures and falls from the material hole on the material plate 3.

[0047] The dimensions of the punch 1 can be adjusted based on actual needs. The area of ​​the first end face 11 of the punch 1, through which the material is punched, must be larger than the area of ​​the notch of the recess 21. The shape of the punch 1 typically matches the shape of the recess 21 to ensure a more uniform distribution of the material sheet 3 punched into the recess 21, resulting in a smoother product. The shape of the punch 1 can also differ from that of the recess 21 to create a more personalized product, although this is not a limitation in the present embodiment.

[0048] The embodiment of the present invention controls the area of ​​the punch 1 on the first end face 11 to be greater than or equal to the notch area of ​​the groove 21, so that the area of ​​the material hole formed is greater than or equal to the outer diameter of the product. When the product falls from the material hole, the product is subject to less resistance, and the probability of extrusion and collision between the product and the material hole is reduced, thereby reducing deformation, burrs or scratches on the product and improving the product yield. In addition, in traditional stamping, the intrusion of the punch 1 into the groove 21 will cause the material to be pushed a long distance, tearing between the side wall of the material hole and the product, and forming a broken surface on the surface of the product; while in this solution, the punch 1 mainly functions to push the material, and the stamping can be completed without intruding into the groove 21, reducing material tearing and making the appearance of the product smoother. In addition, the punch 1 only pushes the material into the groove 21 without entering the groove 21 itself, reducing the friction between the punch 1 and the groove 21, reducing the probability of collision between the punch 1 and the die 2, and extending the service life of the die 2 and the punch 1.

[0049] In some optional embodiments, a driving member is connected to an end of the punch 1 away from the first end face 11, so that the driving member can drive the punch 1 to move, thereby achieving the punching of the material plate 3. It is understandable that there are many ways to connect the punch 1 and the driving member, and designers can make reasonable designs based on actual needs; for example, when the punch 1 and the driving member are detachably connected, the punch 1 can be, but is not limited to, fixedly connected to the driving member by at least one of magnetic attraction, snap connection, or plug-in connection; for another example, when the punch 1 and the driving member are non-detachably connected, the punch 1 can be, but is not limited to, fixedly connected to the driving member by welding.

[0050] In some optional embodiments, an external thread is provided at one end of the punch 1 away from the first end face 11 for forming a threaded connection with the driving member, which makes the connection more stable and reduces the probability of the punch 1 shaking during the punching process.

[0051] In one embodiment, referring to Figure 1 As the punch 1 moves away from the die 2, the cross-sectional area of ​​the punch 1 gradually increases. Consequently, the hole formed after the punch 1 strikes the material sheet 3 has the same shape as the punch 1. That is, the size of the hole also gradually increases from top to bottom. When the product exits the groove 21 and passes through the hole, the friction between the hole and the product is further reduced, thereby improving the surface smoothness of the product.

[0052] In some optional embodiments, the cross-sectional area of ​​the punch 1 increases uniformly along the direction in which the punch 1 moves away from the die 2, which simplifies the processing technology of the punch 1 and facilitates the production of the punch 1. The uniformly increased cross-section can make the inertial force of the punch 1 change uniformly along the axial direction when the punch 1 is punching, thereby avoiding vibration caused by excessive local mass of the punch 1 and affecting the stamping effect.

[0053] In one embodiment, the punch 1 is in a truncated cone shape, and the angle between the generatrix of the punch 1 and the first end surface 11 is greater than or equal to 70° and less than or equal to 90°.

[0054] The truncated cone-shaped punch 1 has better symmetry and more uniform shear force during stamping. In addition, if the angle between the busbar of the punch 1 and the first end face 11 is less than 70°, the size of the punch 1 changes rapidly, resulting in the size of the end of the punch 1 away from the first end face 11 being too large. At this time, the shear effect between the punch 1 and the die on the material plate 3 is weak, which can easily lead to an irregular surface of the stamped product. If the angle between the busbar of the punch 1 and the first end face 11 is greater than 90°, the punch 1 is set up in a wide-upper-lower-narrow manner, which not only reduces the structural strength of the punch 1 itself, but also has poor stability when the punch 1 is stamped upward.

[0055] Therefore, in an embodiment of the present invention, the angle between the busbar of the punch 1 and the first end face 11 is set to be greater than or equal to 70° and less than or equal to 90°. For example, it can be 70°, 72°, 74°, 76°, 78°, 80°, 82°, 84°, 86°, 88°, or 90°. This allows the punch 1 to have better structural strength while the size of the end of the punch 1 away from the first end face 11 is also more appropriate, ensuring that a better shear force can be formed between the punch 1 and the groove 21 during stamping, thereby improving the stamping effect on the material plate 3.

[0056] In one embodiment, along the first direction, a difference between the length of the first end surface 11 and the length of the notch is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

[0057] If the difference between the length of the first end face 11 and the length of the notch is less than 0.05 mm, the area of ​​the first end face 11 of the punch 1 and the notch of the groove 21 are almost the same, and the shear force formed between the punch 1 and the groove 21 is small, which may easily lead to the situation that the material plate 3 cannot be broken, affecting the product quality and the subsequent blanking process; if the difference between the length of the first end face 11 and the length of the notch is greater than 0.2 mm, the punch 1 punches too much material at one time, and the excess material is easily accumulated at the edge of the groove 21, affecting the normal use of the mold 2. Therefore, in an embodiment of the present invention, the difference between the length of the first end face 11 and the length of the slot is set to be greater than or equal to 0.05 mm and less than or equal to 0.2 mm. For example, it can be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, or 0.2 mm, so that the punch 1 can provide a sufficiently large shear force during stamping to ensure the flatness of the outer surface of the product, while avoiding pressing too much material into the groove 21, which affects the product molding and the normal use of the mold 2.

[0058] The first direction is an arbitrary direction. For example, if the punch 1 and the groove 21 are both regular cylindrical or truncated cone shapes, the punch 1 and the groove 21 are controlled to be coaxial, and the difference between the diameter of the punch 1 and the diameter of the groove 21 is greater than or equal to 0.05 mm and less than or equal to 0.2 mm. If the punch 1 and the groove 21 are both irregular shapes, it is necessary to control the difference between the length of the first end face 11 of the punch 1 and the length of the notch in each direction to be greater than or equal to 0.05 mm and less than or equal to 0.2 mm, that is, the orthographic projection of the notch on the first end face 11 completely falls within the range of the first end face 11, so that the punch 1 can push the material neatly into the groove 21, making the material in the groove 21 more uniform.

[0059] In a second aspect, the present invention provides a stamping system, referring to Figures 1 to 3 , comprising: a die 2 and a punch 1 as in the aforementioned embodiment; the die 2 being provided with a recess 21; the punch 1 being disposed below the die 2 in correspondence with the die 2, for punching at least a portion of a material sheet 3 upwardly into the recess 21 along the direction of gravity H1, thereby separating the material sheet 3 into a first portion 31 located within the recess 21 and a second portion 32 located outside the recess 21 and connected to the first portion 31. Since the stamping system in the embodiment of the present invention includes the punch 1 in the aforementioned embodiment, the stamping system has all the advantages of the punch 1 described above, and the embodiments of the present invention are not further described herein.

[0060] The punch 1 can punch at least a portion of the material plate 3 into the groove 21. At this time, the material plate 3 is divided into a first part 31 located in the groove 21 and a second part 32 located outside the groove 21 and connected to the first part 31. It can be understood that, since the area of ​​the first end face 11 of the punch 1 in the embodiment of the present invention is larger than the area of ​​the notch of the groove 21, the punched first part 31 and the second part 32 are usually partially connected. Therefore, after the punch 1 is retracted, the first part 31 will not fall off, thereby improving the accuracy of blanking in the stamping system.

[0061] In one embodiment, referring to Figure 2 and Figure 3 The mold 2 includes a main body 22 and a movable part 23. The main body 22 is provided with an accommodating cavity; the movable part 23 is arranged in the accommodating cavity, and the movable part 23 can move along the extension direction of the accommodating cavity; the cavity side wall of the accommodating cavity and the end face of the movable part 23 can form a groove 21, and the movable part 23 can push the first component 31 to leave the groove 21.

[0062] After traditional stamping is completed, removing the first component 31 from the groove 21 typically requires manual effort or gravity, which can easily cause the first component 31 to deform or become stuck, and is inefficient. In the embodiment of the present invention, the movable member 23 can move along the accommodating cavity, thereby directly pushing the first component 31 out of the groove 21, greatly improving the automation level of the stamping system. Furthermore, the direction of movement of the movable member 23 is consistent with the stamping direction of the punch 1, which reduces the forces acting on the first component 31 in other directions and reduces the probability of the first component 31 being bent or scratched.

[0063] Furthermore, since the groove 21 is composed of the cavity side wall and the end face of the movable part 23, the effective depth of the groove 21 can be changed by adjusting the position of the movable part 23, thereby making the application range of the mold 2 wider, and parts of different heights can be stamped out to meet user needs to a greater extent.

[0064] In one embodiment, the stamping system further includes a moving device for moving the first component 31 and the second component 32 to a blanking station.

[0065] The moving device may be a conveyor belt, a robotic arm or a pushing mechanism, etc. After the stamping is completed, the first component 31 and the second component 32 are moved to the unloading station for unloading, thereby improving the automation level of the stamping system and further improving manufacturing efficiency.

[0066] In one embodiment, the stamping system further includes a pushing device, which is provided corresponding to the blanking station to push the first component 31 and separate the first component 31 from the second component 32 .

[0067] The pushing device is used to separate the first component 31 from the second component 32. Specifically, the pushing device may include a driving mechanism and a pushing mechanism, wherein the driving mechanism can drive the pushing mechanism to move up and down, so that after the moving device delivers the material to the unloading station, the driving mechanism in the pushing device immediately activates, driving the pushing mechanism toward the first component 31, thereby separating the first component 31 from the second component 32.

[0068] By providing the pushing device, there is no need to manually separate the first component 31 and the second component 32 , thereby further improving the automation level of the stamping system and the production efficiency of the first component 31 .

[0069] In a third aspect, the present invention provides a stamping method, which is applied to the stamping system in the aforementioned embodiment, referring to Figure 4 , stamping methods include:

[0070] S100 : Along the gravity direction H1 , the punch 1 punches at least a portion of the material plate 3 upward into the groove 21 , so that the material plate 3 is divided into a first part 31 located in the groove 21 and a second part 32 located outside the groove 21 and connected to the first part 31 .

[0071] The punch 1 can punch at least part of the material plate 3 into the groove 21. At this time, the material plate 3 is divided into a first part 31 located in the groove 21 and a second part 32 located outside the groove 21 and connected to the first part 31. It can be understood that since the area of ​​the first end face 11 of the punch 1 is larger than the area of ​​the notch of the groove 21 in the embodiment of the present invention, the punched first part 31 and the second part 32 are usually partially connected, so that after the punch 1 is retracted, the first part 31 will not fall off. When the stamping system is controlled to move the first part 31 and the second part 32 to the appropriate position, the blanking of the first part 31 will be carried out, thereby improving the accuracy of blanking in the stamping system.

[0072] S200: Move the first component 31 and the second component 32 to the unloading station.

[0073] The moving device can be a conveyor belt, a robotic arm or a pushing mechanism, etc. After the stamping is completed, the first component 31 and the second component 32 are moved to the unloading station for unloading, thereby improving the automation level of the stamping system and further improving manufacturing efficiency.

[0074] S300 : pushing the first component 31 and separating the first component 31 from the second component 32 .

[0075] The pushing device is used to separate the first component 31 from the second component 32. Specifically, the pushing device may include a driving mechanism and a pushing mechanism, wherein the driving mechanism can drive the pushing mechanism to move up and down, so that after the moving device delivers the material to the unloading station, the driving mechanism in the pushing device immediately activates, driving the pushing mechanism toward the first component 31, thereby separating the first component 31 from the second component 32.

[0076] By providing the pushing device, there is no need to manually separate the first component 31 and the second component 32 , thereby further improving the automation level of the stamping system and the production efficiency of the first component 31 .

[0077] In one embodiment, the punch 1 punches at least a portion of the material plate 3 upward into the groove 21, including:

[0078] S110 : The punch 1 punches upwards to allow at least a portion of the material plate 3 to enter the groove 21 , and stops punching upwards when the distance between the punch 1 and the notch of the groove 21 is a first distance.

[0079] By controlling the distance that the punch 1 punches upward, the punch 1 is prevented from directly contacting the groove 21, thereby avoiding collisions between the punch 1 and the die 2, which would damage the punch 1 and the die 2 and affect the service life of the punch 1 and the die 2. Furthermore, a certain distance is always maintained between the punch 1 and the notch of the groove 21, so that after the punch 1 separates the material plate 3 into the first component 31 and the second component 32, the first component 31 and the second component 32 remain connected, so that after the punch 1 retracts, the first component 31 will not fall off. When the stamping system is controlled to move the first component 31 and the second component 32 to the appropriate position, the first component 31 will be blanked, thereby improving the accuracy of blanking in the stamping system.

[0080] In one embodiment, the first distance is less than or equal to 0.5 mm.

[0081] If the first distance is greater than 0.5mm, the thickness of the portion connecting the first component 31 and the second component 32 is too large, which may easily cause tearing, burrs, etc. during subsequent blanking, affecting the smoothness of the outer surface of the first component 31. In addition, the resistance generated when the first component 31 and the second component 32 are separated is relatively large, affecting the blanking efficiency. Therefore, in an embodiment of the present invention, the first distance is set to be less than or equal to 0.5mm. For example, it can be 0.5mm, 0.4mm, 0.3mm, 0.28mm, 0.26mm, 0.24mm, 0.22mm, 0.2mm, 0.18mm, 0.16mm, 0.14mm, 0.12mm, 0.1mm, 0.08mm, 0.06mm, 0.04mm, 0.02mm, etc., so that the connecting portion between the first component 31 and the second component 32 is not too thick, thereby reducing the impact of the resistance at the connection on the subsequent blanking process.

[0082] In one embodiment, before the moving device moves the first component 31 and the second component 32 to the unloading station, the device further includes:

[0083] S400 : the movable member 23 of the mold 2 pushes the first component 31 away from the groove 21 , and pushes the first component 31 to move toward the second component 32 .

[0084] The movable member 23 can move along the accommodating cavity, thereby directly pushing the first component 31 out of the groove 21, greatly improving the automation level of the stamping system. The movement direction of the movable member 23 is consistent with the stamping direction of the punch 1, which can reduce the force generated in other directions acting on the first component 31, reducing the probability of bending or scratching the first component 31. It can be understood that the first component 31 can be pushed back to maintain the connection between the first component 31 and the second component 32, so that the subsequent moving device can move the first component 31 and the second component 32 to the unloading station.

[0085] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0086] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0088] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A punch for punching material upward in the direction of gravity into a groove in a mold, characterized in that: The punch includes a first end surface facing the groove, and an area of ​​the first end surface is greater than or equal to an area of ​​a notch of the groove.

2. The punch according to claim 1, characterized in that The cross-sectional area of ​​the punch gradually increases along a direction in which the punch moves away from the die.

3. The punch according to claim 1, characterized in that The punch is in a truncated cone shape, and the included angle between the generatrix of the punch and the first end face is greater than or equal to 70° and less than or equal to 90°.

4. The punch according to claim 1, characterized in that Along the first direction, a difference between a length of the first end surface and a length of the notch is greater than or equal to 0.05 mm and less than or equal to 0.2 mm.

5. A stamping system, characterized in that: include: a mold provided with a groove; and, The punch according to any one of claims 1 to 4, wherein the punch is arranged below the mold corresponding to the mold, so as to be used to punch at least a portion of the material plate upward into the groove along the direction of gravity, so that the material plate is divided into a first part located in the groove and a second part located outside the groove and connected to the first part.

6. The punching system according to claim 5, characterized in that The mold comprises: a main body, the main body being provided with a receiving cavity; and, a movable member, the movable member being disposed in the accommodating cavity and being movable along an extending direction of the accommodating cavity; The cavity side wall of the accommodating cavity and the end surface of the movable member can form the groove, and the movable member can push the first component to leave the groove.

7. The punching system according to claim 5, characterized in that The stamping system further includes a moving device, which is used to move the first component and the second component to a blanking station.

8. The punching system according to claim 7, characterized in that The stamping system further includes a pushing device, which is provided corresponding to the unloading station and is used for pushing the first component and separating the first component from the second component.

9. A stamping method, applied to the stamping system according to any one of claims 5 to 8, characterized in that: The stamping method comprises: In the direction of gravity, the punch presses at least a portion of the material plate upward into the groove, so that the material plate is divided into a first part located in the groove and a second part located outside the groove and connected to the first part; Moving the first component and the second component to a blanking station; The first component is pushed and separated from the second component.

10. The stamping method according to claim 9, characterized in that: The punch punching at least a portion of the material plate upward into the groove comprises: The punch presses upwards to force at least a portion of the material plate into the groove, and stops pressing upwards when the distance between the punch and the notch of the groove is a first distance.

11. The stamping method according to claim 10, characterized in that: The first distance is less than or equal to 0.5 mm.

12. The stamping method according to claim 9, characterized in that: Before moving the first component and the second component to the blanking station, the method further includes: The movable part of the mold pushes the first component away from the groove and pushes the first component to move toward the second component.

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