Stamping die

Abstract

The utility model provides a stamping die which comprises a lower die assembly, an upper die assembly, a position sensor, a signal receiving module and a press controller, the lower die assembly comprises a lower die base, a lower movable male die and a lower elastic supporting piece, and the lower elastic supporting piece is connected between the lower movable male die and the lower die base; the upper die assembly is located above the lower die assembly. The position sensor is connected to the lower die assembly and used for collecting position information of the lower movable male die. The signal receiving module is in communication connection with the position sensor and is used for receiving position information acquired by the position sensor; the press machine controller is in communication connection with the signal receiving module and used for controlling the upper die assembly to move towards the lower die base or stop running according to the position information collected by the position sensor. According to the stamping die, the upper die assembly can be controlled to stop running when the lower elastic supporting piece breaks down, so that collision between parts of the stamping die is avoided, and the parts of the stamping die are prevented from being damaged or scrapped.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile processing die, and particularly relates to a stamping die. BACKGROUND

[0002] With the development of vehicle stamping technology and the increasing demand for reducing production cost and improving efficiency of vehicles, stamping die design tends to be integrated and complex, especially in the stamping process of the front hood and the rear cover of the vehicle, the stamping die process is concentrated, and the setting positions of the processing parts of the upper flange, the lower flange and the side punching hole and other characteristics are also concentrated.

[0003] At present, in the mass production of stamping dies, the nitrogen cylinder leakage problem is relatively common. When the nitrogen cylinder leakage causes the failure of a part of the stamping die, the parts in the stamping die may collide, thereby causing damage or even scrapping of the die parts. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a stamping die, which aims to solve the technical problem that the existing stamping die is prone to collision between parts due to nitrogen cylinder leakage.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows:

[0006] The application provides a stamping die, which comprises a lower die assembly, an upper die assembly, a position sensor, a signal receiving module and a press machine controller.

[0007] The lower die assembly comprises a lower die seat, a lower movable punch and an elastic support, and the elastic support is connected between the lower movable punch and the lower die seat;

[0008] The upper die assembly is located above the lower die assembly;

[0009] The position sensor is connected to the lower die assembly and is used to collect position information of the lower movable punch;

[0010] The signal receiving module is in communication connection with the position sensor and is used to receive the position information collected by the position sensor;

[0011] The press machine controller is in communication connection with the signal receiving module and is used to control the movement or stop of the upper die assembly towards the lower die seat according to the position information collected by the position sensor.

[0012] As one of the possible implementation manners, the lower die base is provided with a lower side-punch avoiding hole; the upper die assembly comprises an upper die base, an upper pressing core, a side-punch hole wedge and an upper elastic support, the upper elastic support is connected between the upper pressing core and the upper die base, the upper pressing core is opposite to the lower movable punch in the up-down direction, the upper pressing core is provided with an upper side-punch avoiding hole, the side-punch hole wedge is movably connected to the upper die base and can pass through the upper side-punch avoiding hole and be inserted into the lower side-punch avoiding hole when the upper die base moves towards the lower die base.

[0013] As one of the possible implementation manners, the upper die base sequentially has a first upper die position, a second upper die position, a third upper die position and a fourth upper die position along the direction towards the lower die base, the upper pressing core has a first core position away from the upper die base and a second core position close to the upper die base, and the lower movable punch has a first lower punch position away from the lower die base and a second lower punch position close to the lower die base.

[0014] When the upper die base moves from the first upper die position to the second upper die position, the upper pressing core is located at the first core position and the lower movable punch is located at the first lower punch position, and the upper pressing core and the lower movable punch can jointly clamp a sheet material.

[0015] When the upper die base moves from the second upper die position towards the third upper die position, the position sensor collects the position information of the lower movable punch, and the press machine controller can receive the position information to determine whether the lower movable punch moves from the first lower punch position towards the second lower punch position, control the upper die base to continue moving towards the third upper die position, and control the upper die base to stop moving when it is determined according to the position information that the lower movable punch does not move.

[0016] When the upper die base moves from the third upper die position towards the fourth upper die position, the upper pressing core moves from the first core position towards the second core position, and the side-punch hole wedge slides relative to the upper die base and passes through the upper side-punch avoiding hole, and when the upper die base reaches the fourth upper die position, the side-punch hole wedge is inserted into the lower side-punch avoiding hole.

[0017] As one possible implementation, the position sensor is unable to collect position information of the lower movable punch when the lower movable punch is in the first lower punch position, and is able to collect position information of the lower movable punch when the lower movable punch moves away from the first lower punch position and towards the second lower punch position, and the press controller controls the upper die assembly to stop moving when the position information is not received, and controls the upper die assembly to continue moving towards the lower die seat when the position information is received.

[0018] As one possible implementation, the position sensor is located between the lower die seat and the lower movable punch of the lower die assembly.

[0019] As one possible implementation, the position sensor is connected to the lower die seat.

[0020] As one possible implementation, the lower die seat has a lower guide portion, the side piercing cam is slidably connected to the upper die seat and has an upper guide portion capable of cooperating with the lower guide portion, and the upper guide portion is capable of cooperating with the lower guide portion when the upper die seat moves towards the lower die seat to guide the side piercing cam to slide relative to the upper die seat.

[0021] As one possible implementation, the lower guide portion includes a lower guide surface arranged obliquely, the upper guide portion includes an upper guide surface parallel to the lower guide surface, and the sliding track of the side piercing cam relative to the upper die seat is arranged at an angle between the upper guide surface, and the upper guide surface is capable of abutting the lower guide surface when the upper die seat moves towards the lower die seat and guiding the side piercing cam to slide relative to the upper die seat by sliding along the extension direction of the lower guide surface.

[0022] As one possible implementation, the lower die assembly further includes a flanging punch arranged on the lower die seat, and the upper pressure core is provided with a flanging avoiding hole opposite to the flanging punch, and the flanging punch is capable of being inserted into the flanging avoiding hole when the upper pressure core and the lower movable punch are capable of jointly clamping a sheet.

[0023] As one possible implementation, the lower die seat is provided with a lower piercing punch, and the lower piercing punch is provided with the lower side piercing avoiding hole.

[0024] The technical effect of the present application with respect to the prior art is that when the upper die assembly is lowered to jointly hold the sheet material with the lower movable punch, the upper die assembly applies downward pressure to the lower movable punch. If the lower elastic support is normally compressed and deformed, the lower movable punch moves downward, and the position sensor collects position information of the lower movable punch. The press controller judges that the lower elastic support is working normally according to the position information, so it controls the upper die assembly to continue to move downward normally until the punching action is completed. When the upper die assembly applies downward pressure to the lower movable punch, if the lower elastic support fails to be compressed and deformed, the position of the lower movable punch does not change. After the displacement sensor collects the position information, the press controller can judge that the lower elastic support has failed according to the position information. At this time, the press controller controls the upper die assembly to stop running, so as to avoid collision between the parts of the stamping die, thereby avoiding damage or scrapping of the parts of the stamping die. The stamping die provides a reliable and efficient protection mechanism to avoid production accidents, can realize rapid detection of the lower elastic support, and protect the parts of the stamping die, saving the maintenance and replacement cost of the parts of the stamping die. The stamping die detects the movement state of the lower movable punch as a key part in the stamping die in real time through the position sensor, the signal receiving module and the press controller, ensures the safety and stability of the production process, has strong applicability, and improves the automation level and safety of stamping production. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating any inventive labor.

[0026] Figure 1 is a partial cross-sectional view of the stamping die provided by the embodiments of the present application;

[0027] Figure 2 is a partial cross-sectional view of the stamping die provided by the embodiments of the present application, wherein the upper die seat is in the first upper die position;

[0028] Figure 3 is a partial cross-sectional view of the stamping die provided by the embodiments of the present application, wherein the upper die seat is in the second upper die position;

[0029] Figure 4 is a partial cross-sectional view of the stamping die provided by the embodiments of the present application, wherein the upper die seat is in the third upper die position;

[0030] Figure 5 is a partial cross-sectional view of the stamping die provided by the embodiments of the present application, wherein the upper die seat is in the fourth upper die position.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 10, lower die assembly; 101, lower side punch avoiding hole; 11, lower die seat; 110, mounting groove; 111, lower guide portion; 1110, lower guide surface; 12, lower movable punch; 13, lower elastic support; 14, lower punching punch; 15, flanging punch; 20, upper die assembly; 201, upper side punch avoiding hole; 21, upper die seat; 22, upper pressure core; 221, flanging avoiding hole; 23, upper elastic support; 24, side punching inclined wedge; 241, side punch; 242, upper guide portion; 2420, upper guide surface; 30, position sensor; 40, signal receiving module; 50, press controller; 90, sheet material; 91, horizontal portion; 901, first hole; 9011, flanging hole; 92, inclined portion; 902, second hole. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it is to be understood that the terms "length", "width", "upper", "lower", "horizontal", "inclined", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0036] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like, should be construed broadly and, for example, can be a fixed connection, or a detachable connection, or integral; can be a mechanical connection, or an electrical connection; can be a direct connection, or an indirect connection via an intermediate medium, or a communication or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples.

[0038] Referring to Figure 1 The stamping die can be used for stamping a sheet 90, such as a front hood or a rear cover of a vehicle, and can stamp a hole structure, such as a flange hole 9011 and a side hole, on the sheet 90. Optionally, the sheet 90 can also be shaped. The sheet 90 can include a transverse portion 91 and an inclined portion 92 connected together, the transverse portion 91 and the inclined portion 92 are arranged at an angle, the transverse portion 91 extends substantially in a horizontal direction, a first hole 901 is formed on the transverse portion 91, and the inclined portion 92 extends substantially in a direction at an angle to the horizontal direction. The stamping die can stamp the first hole 901 into the flange hole 9011 and stamp a second hole 902 on the side portion.

[0039] Referring to Figure 1 The stamping die includes a lower die assembly 10, an upper die assembly 20, a position sensor 30, a signal receiving module 40, and a press controller 50.

[0040] The upper die assembly 20 is located above the lower die assembly 10, and the upper die assembly 20 can move downward until it clamps the sheet 90 together with the lower die assembly 10 and punches and shapes the sheet 90.

[0041] The lower die assembly 10 includes a lower die seat 11, a lower movable punch 12, and a lower elastic support 13. The lower movable punch 12 is connected above the lower die seat 11 by the lower elastic support 13, i.e. the lower elastic support 13 is located between the lower movable punch 12 and the lower die seat 11 and is used to support the lower movable punch 12. The lower elastic support 13 can be elastically deformed to allow the lower movable punch 12 to move up and down relative to the lower die seat 11. The upper die assembly 20 can clamp the sheet 90 together with the lower movable punch 12. Specifically, the lower die seat 11 has a mounting groove 110 formed thereon, the lower movable punch 12 is at least partially received in the mounting groove 110, and the lower elastic support 13 is arranged between the groove bottom surface of the mounting groove 110 and the lower surface of the lower movable punch 12. The lower elastic support 13 can be a nitrogen gas spring.

[0042] The position sensor 30 is connected to the lower die assembly 10 and is used to collect position information of the lower movable punch 12. The position sensor 30 includes, but is not limited to, a photoelectric sensor, a laser sensor, an ultrasonic sensor, a pressure sensor, a Hall sensor, a displacement sensor, a capacitive sensor, an inductive sensor, etc.

[0043] The signal receiving module 40 is in communication connection with the position sensor 30, and the signal receiving module 40 is used to receive the position information collected by the position sensor 30.

[0044] The press controller 50 is in communication connection with the signal receiving module 40, and the press controller 50 is used to control the upper die assembly 20 to move or stop running towards the lower die seat 11 according to the position information collected by the position sensor 30.

[0045] Specifically, the signal receiving module 40 can process the position information collected by the position sensor 30 into an electrical signal, and the press controller 50 can receive the electrical signal processed by the signal receiving module 40 and determine the position of the lower movable punch 12 according to the electrical signal.

[0046] When the upper die assembly 20 moves downward to jointly hold the sheet material 90 with the lower movable punch 12, the upper die assembly 20 applies a downward pressure to the lower movable punch 12. If the lower elastic support 13 is normally compressed and deformed, the lower movable punch 12 moves downward, the position sensor 30 collects the position information of the lower movable punch 12, and the press controller 50 determines that the lower elastic support 13 is working normally according to the position information, so it controls the upper die assembly 20 to continue to move downward normally until the punching action is completed. When the upper die assembly 20 applies a downward pressure to the lower movable punch 12, if the lower elastic support 13 fails to be compressed and deformed, the position of the lower movable punch 12 does not change, and the displacement sensor collects the position information. The press controller 50 can determine that the lower elastic support 13 has failed according to the position information, and at this time, the press controller 50 controls the upper die assembly 20 to stop running to avoid collision between the parts of the stamping die, thereby avoiding damage or scrapping of the parts of the stamping die. The stamping die provides a reliable and efficient protection mechanism to avoid production accidents, realizes rapid detection of the lower elastic support 13, protects the parts of the stamping die, and saves the maintenance and replacement costs of the parts of the stamping die. The stamping die detects the movement state of the lower movable punch 12 as a key part in the stamping die in real time through the position sensor 30, the signal receiving module 40 and the press controller 50, ensures the safety and stability of the production process, has strong applicability, and improves the automation level and safety of the stamping production.

[0047] It should be noted that the displacement sensor can start collecting the position information of the lower movable punch 12 after the upper die assembly 20 and the lower movable punch 12 jointly clamp the sheet material 90, so that the press controller 50 normally controls the downward movement of the upper die assembly 20 before the displacement sensor operates; the displacement sensor can also always collect the position information of the lower movable punch 12, and the press controller 50 only controls the upper die assembly 20 to continue to move downward or stop running according to the position information collected by the displacement sensor after the upper die assembly 20 and the lower movable punch 12 clamp the sheet material 90, and before the upper die assembly 20 and the lower movable punch 12 clamp the sheet material 90, the position information collected by the displacement sensor is not used as a control condition, or the position of the upper die assembly 20 and the position information collected by the displacement sensor are used as a control condition, that is, when the upper die assembly 20 does not reach the position capable of clamping the sheet material 90 with the lower movable punch 12, the position information collected by the displacement sensor alone is not enough to trigger the upper die assembly 20 to stop running.

[0048] Please refer to Figure 1 Optionally, the lower die seat 11 is provided with a lower punching punch 14, and the lower punching punch 14 is provided with a lower side punching avoiding hole 101. The lower punching punch 14 is detachably connected with the lower die seat 11. After a long time of punching operation, if the hole wall or the hole opening of the lower side punching avoiding hole 101 is worn, only the lower punching punch 14 can be replaced to save maintenance cost. The lower punching punch 14 can be made of a material with high hardness to improve the reliability of the punching die, prolong the service life, and save cost.

[0049] Please refer to Figure 1In some embodiments, the upper die assembly 20 comprises an upper die seat 21, an upper pressing core 22, a side piercing cam 24, and an upper elastic support 23. The upper elastic support 23 is connected between the upper pressing core 22 and the upper die seat 21, i.e., the upper pressing core 22 is connected to the upper die seat 21 through the upper elastic support 23, the upper pressing core 22 is located below the upper die seat 21 and opposite to the lower movable punch 12 in the vertical direction, the upper pressing core 22 has an upper side piercing avoiding hole 201, the lower die seat 11 is provided with a lower side piercing avoiding hole 101, the side piercing cam 24 is movably connected to the upper die seat 21, the movable connection includes but is not limited to sliding connection, rotary connection, elastic connection, etc., the side piercing cam 24 can be directly connected to the upper die seat 21 or indirectly connected to the upper die seat 21 through other structural members. The side piercing cam 24 is arranged side by side with the upper pressing core 22 and located obliquely above the upper side piercing avoiding hole 201. During the downward movement of the upper die seat 21, the upper pressing core 22 can jointly hold the sheet material 90 with the lower movable punch 12, specifically, the transverse part 91 of the sheet material 90. The side piercing cam 24 can pass through the upper side piercing avoiding hole 201 and insert into the lower side piercing avoiding hole 101 when the upper die seat 21 moves towards the lower die seat 11. The axis of the upper side piercing avoiding hole 201 and the axis of the lower side piercing avoiding hole 101 are both arranged at an angle with the vertical direction and the horizontal direction, i.e., the axes of the two holes are both inclined. The upper elastic support 23 can be a nitrogen spring.

[0050] Optionally, when the sheet material 90 is held between the upper pressing core 22 and the lower movable punch 12, the axis of the upper side piercing avoiding hole 201 and the axis of the lower side piercing avoiding hole 101 are both perpendicular to the oblique part 92 of the sheet material 90.

[0051] Optionally, the side piercing cam 24 has a side piercing head 241, the side piercing head 241 is columnar, and the central axis of the side piercing head 241 is parallel to the axis of the upper side piercing avoiding hole 201 and the axis of the lower side piercing avoiding hole 101.

[0052] When the upper die holder 21 moves towards the lower die holder 11, the upper pressing core 22 clamps the transverse part 91 of the sheet material 90 together with the lower movable punch 12, the oblique part 92 of the sheet material 90 is above the lower side punch avoiding hole 101, then the lower movable punch 12 moves downwards under the pressure of the upper pressing core 22 until the lower elastic support 13 is compressed to the minimum length, at this time, the upper pressing core 22 clamps the oblique part 92 of the sheet material 90 together with the lower die holder 11, and the upper side punch avoiding hole 201 is opposite to the lower side punch avoiding hole 101 in the axial direction of the two, then the upper die holder 21 continues to move downwards, the upper pressing core 22 moves towards the upper die holder 21 under the support force of the lower movable punch 12, that is, the position of the upper pressing core 22 does not change, the upper die holder 21 continues to move downwards, the upper elastic support 23 is compressed and shortened, in this process, the side punch hole inclined wedge 24 moves relative to the upper die holder 21 and punches the oblique part 92 through the upper side punch avoiding hole 201 to form a second hole 902 on the oblique part 92, when the upper elastic support 23 is compressed to the minimum length, the side punch hole inclined wedge 24 is inserted into the lower side punch avoiding hole 101.

[0053] If the lower elastic support 13 fails, the side punch hole inclined wedge 24 cannot move relative to the upper die holder 21, then in the process of the upper pressing core 22 moving towards the upper die holder 21, the side punch hole inclined wedge 24 cannot pass through the upper side punch avoiding hole 201 and collides with the upper pressing core 22. The stamping die can collect the position information of the lower movable punch 12 through the position sensor 30, so that when the lower elastic support 13 fails, the upper die holder 21 can be stopped by the press controller 50, thereby avoiding the collision between the side punch hole inclined wedge 24 and the upper pressing core 22, preventing the damage of the parts of the stamping die, and improving the reliability of the operation of the stamping die.

[0054] Please refer to Figures 2 to 5 In some embodiments, the upper die holder 21 has a first upper die position, a second upper die position, a third upper die position and a fourth upper die position in sequence in the direction towards the lower die holder 11, and the press controller 50 can control the upper die holder 21 to move from top to bottom, so that the upper die holder 21 passes through the second upper die position and the third upper die position in sequence to reach the fourth upper die position from the first upper die position.

[0055] As Figure 4 and Figure 5The upper pressing core 22 has a first core position away from the upper die seat 21 and a second core position close to the upper die seat 21, and the upper pressing core 22 can move between the first core position and the second core position. When the upper pressing core 22 is located at the first core position, the upper elastic support 23 is in a longer state, and the distance between the upper pressing core 22 and the upper die seat 21 is larger, that is, the upper pressing core 22 is away from the upper die seat 21. When the upper pressing core 22 is located at the second core position, the upper elastic support 23 is in a shorter state, and the distance between the upper pressing core 22 and the upper die seat 21 is smaller, that is, the upper pressing core 22 is close to the upper die seat 21. The upper pressing core 22 can move towards the upper die seat 21 under the support force of the lower movable punch 12, so as to move from the first core position to the second core position, and move away from the upper die seat 21 by the elongation of the upper elastic support 23, so as to move from the second core position to the first core position.

[0056] As Figure 2 and Figure 3 The lower movable punch 12 has a first lower punch position away from the lower die seat 11 and a second lower punch position close to the lower die seat 11, and the lower movable punch 12 can move between the first lower punch position and the second lower punch position. When the lower movable punch 12 is located at the first lower punch position, the lower elastic support 13 is in a longer state, and the distance between the lower movable punch 12 and the lower die seat 11 is larger, that is, the lower movable punch 12 is away from the lower die seat 11. When the lower movable punch 12 is located at the second lower punch position, the lower elastic support 13 is in a shorter state, and the distance between the lower movable punch 12 and the lower die seat 11 is smaller, that is, the lower movable punch 12 is close to the lower die seat 11. The lower movable punch 12 can move downward under the pressure of the upper die assembly 20, so as to move from the first lower punch position to the second lower punch position, and move upward by the elongation of the lower elastic support 13, so as to move from the second lower punch position to the first lower punch position.

[0057] As Figure 2 and Figure 3 When the upper die seat 21 moves from the first upper die position to the second upper die position, the upper pressing core 22 is located at the first core position and the lower movable punch 12 is located at the first lower punch position, and the upper pressing core 22 and the lower movable punch 12 can jointly clamp the sheet material 90, specifically clamp the transverse part 91 of the sheet material 90.

[0058] As Figure 3 and Figure 4When the upper die holder 21 is moved from the second upper die position to the third upper die position, the upper pressing core 22 keeps the first core position unchanged, and the lower movable punch 12 is moved from the first lower punch position to the second lower punch position. When the lower movable punch 12 reaches the second lower punch position, the upper pressing core 22 clamps the inclined part 92 of the sheet material 90 together with the lower die holder 11. During the movement of the upper die holder 21 from the second upper die position to the third upper die position, the position sensor 30 collects the position information of the lower movable punch 12. When the position sensor 30 determines that the lower movable punch 12 is moved from the first lower punch position to the second lower punch position according to the position information, the press controller 50 controls the upper die holder 21 to continue moving toward the third upper die position, and the lower elastic support 13 is not disabled at this time. When the position sensor 30 determines that the lower movable punch 12 is not moved according to the position information, the press controller 50 controls the upper die holder 21 to stop moving, and the lower elastic support 13 is disabled at this time. Stopping the operation can avoid the collision between the side piercing cam 24 and the upper pressing core 22.

[0059] As Figure 4 and Figure 5 When the upper die holder 21 is moved from the third upper die position to the fourth upper die position, the lower movable punch 12 keeps the second lower punch position unchanged, the upper pressing core 22 is moved from the first core position to the second core position, and the side piercing cam 24 slides relative to the upper die holder 21 and passes through the upper side piercing avoidance hole 201. During the movement of the upper die holder 21 toward the fourth upper die position, the side piercing cam 24 can punch out a second hole 902 on the inclined part 92 of the sheet material 90. When the upper die holder 21 reaches the fourth upper die position, the side piercing cam 24 passes through the second hole 902 on the sheet material 90 and is inserted into the lower side piercing avoidance hole 101.

[0060] In some embodiments, the position sensor 30 cannot collect the position information of the lower movable punch 12 when the lower movable punch 12 is in the first lower punch position, and can collect the position information of the lower movable punch 12 when the lower movable punch 12 moves away from the first lower punch position and toward the second lower punch position. The press controller 50 controls the upper die assembly 20 to stop operating when no position information is received, and controls the upper die assembly 20 to continue moving toward the lower die holder 11 when the position information is received. In this way, the press controller 50 can directly determine whether the position of the lower movable punch 12 changes according to the presence or absence of the position information, the judgment logic is simple, the risk of error is reduced, and the calculation power is saved.

[0061] Please refer to Figure 1 In some embodiments, the position sensor 30 is located between the lower die holder 11 and the lower movable punch 12 of the lower die assembly 10, so as to facilitate the acquisition of the position information of the lower movable punch 12, and make full use of the space between the lower die holder 11 and the lower movable punch 12, which is conducive to the centralization and compactness of the components in the stamping die.

[0062] Optionally, the position sensor 30 is connected to the lower die seat 11, so as to facilitate the wiring of the position sensor 30, and improve the reliability and stability of the installation of the position sensor 30.

[0063] Please refer to Figure 1 In some embodiments, the lower die seat 11 has a lower guide portion 111, and the side piercing inclined wedge 24 is slidably connected to the upper die seat 21 and has an upper guide portion 242 capable of cooperating with the lower guide portion 111. The upper guide portion 242 is capable of cooperating with the lower guide portion 111 when the upper die seat 21 moves towards the lower die seat 11, so as to guide the side piercing inclined wedge 24 to slide relative to the upper die seat 21. The cooperative sliding of the lower guide portion 111 and the upper guide portion 242 can enable the side piercing inclined wedge 24 to slide autonomously relative to the upper die seat 21, thereby saving energy.

[0064] Specifically, the upper guide portion 242 can be in contact with the lower guide portion 111 during the movement of the upper die seat 21 from the third upper die position to the fourth upper die position, and can move relative to the lower guide portion 111 during the continuous movement of the upper die seat 21 downwards, so as to guide the side piercing inclined wedge 24 to slide towards the upper side piercing avoiding hole 201.

[0065] Optionally, the upper die seat 21 further comprises a reset member connected between the side piercing inclined wedge 24 and the upper die seat 21. The reset member is capable of exerting a reset force away from the upper side piercing avoiding hole 201 on the side piercing inclined wedge 24 during the movement of the side piercing inclined wedge 24 towards the upper side piercing avoiding hole 201, so as to enable the upper guide portion 242 to reset during the upward movement of the upper die seat 21, in preparation for the next piercing operation. The reset member can be a spring.

[0066] Optionally, please refer to Figure 5 The lower guide portion 111 comprises an inclined lower guide surface 1110, and the upper guide portion 242 comprises an upper guide surface 2420 parallel to the lower guide surface 1110. The sliding track of the side piercing inclined wedge 24 relative to the upper die seat 21 is arranged at an angle with the upper guide surface 2420, and the upper guide surface 2420 is parallel to the lower guide surface 1110. The upper guide surface 2420 can be in close contact with the lower guide surface 1110 when the upper die seat 21 moves towards the lower die seat 11, and can guide the side piercing inclined wedge 24 to slide relative to the upper die seat 21 by sliding along the extension direction of the lower guide surface 1110. In this way, the side piercing inclined wedge 24 can slide relative to the upper die seat 21 by the component force generated by the relative sliding of the upper guide surface 2420 and the lower guide surface 1110, and the cooperation of the upper guide surface 2420 and the lower guide surface 1110 improves the stability of the guidance.

[0067] In other embodiments, the lower guide portion 111 can also not be provided with the lower guide surface 1110, and only the upper guide portion 242 is provided with the upper guide surface 2420, or the upper guide portion 242 is not provided with the upper guide surface 2420, and only the lower guide portion 111 is provided with the lower guide surface 1110, which is not limited here.

[0068] Please refer to Figure 1 In some embodiments, the lower die assembly 10 further comprises a flanging punch 15 arranged on the lower die seat 11, and the upper pressing core 22 is provided with a flanging avoiding hole 221 opposite to the flanging punch 15, and the flanging punch 15 can be inserted into the flanging avoiding hole 221 when the upper pressing core 22 and the lower movable punch 12 can jointly clamp the sheet material 90. When the upper die seat 21 is located at the second upper die position, the flanging punch 15 is opposite to the first hole 901 on the sheet material 90, and does not apply force to the sheet material 90, and when the upper die seat 21 moves from the second upper die position to the third upper die position, the lower movable punch 12 moves downward, and the top surface height of the lower movable punch 12 is lower than the top surface height of the flanging punch 15, the flanging punch 15 is extruded towards the first hole 901 until the hole wall of the first hole 901 is turned towards the upper die seat 21 to form a flanging hole 9011, and the flanging punch 15 is inserted into the flanging avoiding hole 221. The arrangement of the flanging punch 15 can realize the processing of the flanging hole 9011 on the sheet material 90, and the position sensor 30 arranged on the stamping die can collect the position information of the lower movable punch 12 to ensure that the processing of the flanging hole 9011 can be effectively completed after the normal stamping process is completed, and the yield is improved. The flanging avoiding hole 221 can be a blind hole to facilitate processing and ensure the structural strength of the upper pressing core 22.

[0069] The above only describes some specific embodiments of the present application, and only specifically describes the technical principles of the present application, and these descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the protection scope of the present application. Based on the explanation here, any modification, equivalent replacement and improvement within the scope of the present application, and other specific embodiments of the present application that can be easily conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. A stamping die, characterized in that, include: The lower mold assembly includes a lower mold base, a lower movable punch, and a lower elastic support member, wherein the lower elastic support member is connected between the lower movable punch and the lower mold base; The upper mold assembly is located above the lower mold assembly; A position sensor is connected to the lower die assembly and is used to collect the position information of the lower movable punch; A signal receiving module is communicatively connected to the position sensor and is used to receive the position information collected by the position sensor; The press controller is communicatively connected to the signal receiving module and is used to control the upper mold assembly to move toward the lower mold base or stop operating based on the position information collected by the position sensor.

2. The stamping die as described in claim 1, characterized in that, The lower die base has a lower side punch clearance hole; the upper die assembly includes an upper die base, an upper pressure core, a side punch wedge, and an upper elastic support member. The upper elastic support member is connected between the upper pressure core and the upper die base. The upper pressure core and the lower movable punch are opposite each other in the vertical direction. The upper pressure core has an upper side punch clearance hole. The side punch wedge is movably connected to the upper die base and can pass through the upper side punch clearance hole and insert into the lower side punch clearance hole when the upper die base moves toward the lower die base.

3. The stamping die as described in claim 2, characterized in that, The upper die base has a first upper die position, a second upper die position, a third upper die position and a fourth upper die position in sequence along the direction toward the lower die base. The upper pressing core has a first core position away from the upper die base and a second core position close to the upper die base. The lower movable punch has a first lower punch position away from the lower die base and a second lower punch position close to the lower die base. When the upper die holder moves from the first upper die position to the second upper die position, the upper pressing core is located at the first core position and the lower movable punch is located at the first lower punch position, and the upper pressing core and the lower movable punch can jointly clamp the sheet material; When the upper die holder moves from the second upper die position toward the third upper die position, the position sensor collects the position information of the lower movable punch. The press controller can receive the position information and determine that when the lower movable punch moves from the first lower punch position toward the second lower punch position, it controls the upper die holder to continue moving toward the third upper die position. When it is determined from the position information that the lower movable punch has not moved, it controls the upper die holder to stop moving. When the upper die holder moves from the third upper die position toward the fourth upper die position, the upper pressure core moves from the first core position toward the second core position, and the side punch wedge slides relative to the upper die holder and passes through the upper side punch clearance hole. When the upper die holder reaches the fourth upper die position, the side punch wedge inserts into the lower side punch clearance hole.

4. The stamping die as described in claim 3, characterized in that, The position sensor cannot collect the position information of the lower movable punch when the lower movable punch is in the first lower punch position, but can collect the position information of the lower movable punch when the lower movable punch leaves the first lower punch position and moves toward the second lower punch position. When the press controller does not receive the position information, it controls the upper die assembly to stop running, and when it receives the position information, it controls the upper die assembly to continue moving toward the lower die base.

5. The stamping die as described in claim 1, characterized in that, The position sensor is located between the lower mold base and the lower movable punch of the lower mold assembly.

6. The stamping die as described in claim 5, characterized in that, The position sensor is connected to the lower mold base.

7. The stamping die as described in claim 2, characterized in that, The lower die base has a lower guide portion, the side punch wedge is slidably connected to the upper die base, and has an upper guide portion that can cooperate with the lower guide portion. The upper guide portion can cooperate with the lower guide portion when the upper die base moves toward the lower die base to guide the side punch wedge to slide relative to the upper die base.

8. The stamping die as described in claim 7, characterized in that, The lower guide portion includes an inclined lower guide surface, and the upper guide portion includes an upper guide surface parallel to the lower guide surface. The sliding trajectory line of the side punch wedge relative to the upper die base is set at an angle with the upper guide surface. The upper guide surface can fit against the lower guide surface when the upper die base moves toward the lower die base, and guide the side punch wedge to slide relative to the upper die base by sliding along the extension direction of the lower guide surface.

9. The stamping die as described in claim 2, characterized in that, The lower die assembly also includes a flanging punch block disposed on the lower die base. The upper pressure core has a flanging clearance hole opposite to the flanging punch block. When the upper pressure core and the lower movable punch can jointly clamp the sheet material, the flanging punch block can be inserted into the flanging clearance hole.

10. The stamping die as described in claim 2, characterized in that, The lower die base is provided with a lower punch, and the lower punch has a lower side punch clearance hole.

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