A quick-stripping die for stamping automobile parts

Abstract

This invention discloses a rapid stripping die for stamping automotive parts, belonging to the field of machining technology. It includes an upper die base and a lower die base aligned with each other. A convex template is fixedly connected to the lower side of the upper die base, and a punch is provided on the lower side of the convex template. A concave template is fixedly connected to the upper side of the lower die base, and a cavity aligned with the punch is provided on the upper side of the concave template. A first receiving groove is formed on the lower side of the punch, and a first ejector rod capable of lifting and lowering is provided in the first receiving groove. The upper end of the first ejector rod has an elastic extrusion member. A through hole is provided on both the lower die base and the concave template, and the first through hole communicates with the cavity. A vertically movable top block is provided at the bottom of the cavity, and a second ejector rod is connected to the lower side of the top block. The second ejector rod is slidably inserted into the first through hole. This invention can simultaneously extrude stamped parts from both above and below, and the top block has a large bearing area, thus facilitating rapid stripping.

Description

Technical Field

[0001] This invention belongs to the field of machining technology, and in particular relates to a quick stripping die for stamping automotive parts. Background Technology

[0002] Automobiles are often called "machines that change the world." Due to the strong industrial linkages within the automotive industry, it is considered a significant indicator of a nation's economic development level. There are four main automotive manufacturing processes, with stamping being the most crucial and fundamental. Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profiles, causing plastic deformation or separation to obtain stamped parts of the desired shape and size. Stamping and forging both belong to plastic processing (or pressure processing), collectively known as forging and pressing. The raw materials for stamping are mainly hot-rolled and cold-rolled steel sheets and strips. Of the world's steel, 60% to 70% is sheet metal, most of which is processed into finished products through stamping.

[0003] When stamping parts, the ejection of stamped parts is generally achieved through two methods: mechanical lever ejection and pneumatic component ejection. Pneumatic components are generally cylinders, and most of them only have ejector parts on the punch or die. Moreover, the contact surface is small, which makes it inconvenient for the stamped parts to be quickly removed. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a quick stripping die for stamping automotive parts, which has the advantage of rapid stripping and solves the problem that most existing technologies only have ejector parts on the punch or die, and the contact surface is small, making it inconvenient for quick stripping of stamped parts.

[0005] This invention is implemented as follows: a quick stripping die for stamping automotive parts includes an upper die base and a lower die base aligned with each other. A punch plate is fixedly connected to the lower side of the upper die base, and a punch is provided on the lower side of the punch plate. A concave die plate is fixedly connected to the upper side of the lower die base, and a cavity aligned with the punch is provided on the upper side of the concave die plate. A first receiving groove is opened on the lower side of the punch, and a first ejector rod that can be raised and lowered is provided in the first receiving groove. The upper end of the first ejector rod has an elastic extrusion member. A through hole is provided on the lower die base and the concave die plate, and the first through hole communicates with the cavity. A top block that can move up and down is provided at the bottom of the cavity, and a second ejector rod is connected to the lower side of the top block. The second ejector rod is slidably inserted into the first through hole.

[0006] In a preferred embodiment of the present invention, the elastic compression member includes a spring, one end of which is connected to the upper wall of the first receiving groove via a connector, and the lower end of which is fixedly connected to the first top rod via bolts; the upper end of the first receiving groove has a slot, and the connector further includes a plug rod, which is fixedly connected to the upper end of the spring, and the plug rod and the spring are not coaxially arranged, and the plug rod is inserted into the slot.

[0007] As a preferred embodiment of the present invention, the spring can be connected in the following manner: a through-hole is provided on the upper mold base and the convex template respectively, the through-hole is connected to the slot, the upper end of the insert rod passes through the through-hole and extends to the upper side of the upper mold base, and the insert rod is fixed by at least one of the following structures: bolt, buckle, and pin.

[0008] As a preferred embodiment of the present invention, the upper mold base and the convex mold plate are respectively provided with a through threaded hole;

[0009] The connector also includes a screw, the outer ring of which has an external thread. The screw is connected to the threaded hole through the external thread. The pitch of the external thread is equal to the pitch of the spring, and the direction of rotation of the external thread is equal to the direction of rotation of the spring. The screw can be rotatably connected to the spring through the external thread.

[0010] As a preferred embodiment of the present invention, the elastic compression member further includes an air bladder located in the inner ring of the spring, the outer ring of the air bladder having an extension portion, and when the air pressure of the air bladder is greater than a preset value, the extension portion extends into the gap of the spring; the screw has a first channel inside for accommodating the air bladder inflation conduit.

[0011] In a preferred embodiment of the present invention, the upper end of the screw extends to the upper side of the upper mold base, and a gear is fixedly connected to the upper end of the screw; the upper mold base is equipped with a motor, and a rack is fixedly connected to the output end of the motor, with the rack and the gear meshing. In use, the screw can be rotated by the drive of the motor and the transmission of the rack and gear, thereby achieving the aforementioned function.

[0012] Furthermore, the airbag contains a pressure block. When the screw moves downward a certain distance, it can press the pressure block downward, which in turn presses the first push rod downward, thereby increasing the force of material removal.

[0013] In a preferred embodiment of the present invention, the punch is provided with a second receiving groove on both sides, a pressure plate is rotatably connected to the opening of the second receiving groove, a positioning plate is fixedly connected to one side of the pressure plate, the second receiving groove and the first receiving groove are connected, and the positioning plate can be inserted into the gap of the spring.

[0014] As a preferred embodiment of the present invention, the end of the positioning plate is provided with a positioning hole; the punch is provided with a plurality of limiting holes, the limiting holes being arranged in an arc shape at equal intervals relative to the rotation axis of the pressure plate; a positioning rod is inserted into one of the limiting holes, the positioning rod being able to be inserted into the positioning hole.

[0015] Preferably, the top block has an embedding groove, in which an electromagnet is disposed, and the second push rod has a second channel for guiding the electromagnet through. During stripping, the electromagnet opens, thereby attracting the stamped part and assisting the punch and the stamped part to disengage; for example, the electromagnet switch is disposed on the die plate and is a normally closed switch, which opens when the punch reaches the bottom and closes when the punch rises to a predetermined position and disengages from the extrusion.

[0016] In a preferred embodiment of the present invention, a guide rod is fixedly connected to the upper mold base, and a guide sleeve is embedded in the lower mold base, with the guide rod slidably inserted into the guide sleeve; two guide sleeves arranged diagonally are provided with a first slide rail, the guide rod is provided with a second slide rail, and the second push rod is provided with a through hole; the lower mold base has a third receiving groove, and a lever is provided in the third receiving groove, the end of the lever passing through the first slide rail and extending into the second slide rail; a connecting rod is provided through the through hole, and the connecting rod is inserted into the lever.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In this invention, during use, the upper mold base is moved up and down by a hydraulic press to achieve mold closing and opening, for stamping and stripping. During stripping, the elastic extrusion member presses the first ejector pin downwards, thereby separating the stamped parts from the punch; and the second ejector pin presses the ejector block upwards, and the ejector block presses the stamped parts upwards, thereby separating the stamped parts from the cavity. With this setting, the stamped parts are pressed from both above and below simultaneously, and the ejector block has a large bearing area, which facilitates rapid stripping.

[0019] 2. In this invention, the screw can be rotatably connected to the spring via the external thread, which has the following effects: First, the spring is fixed by rotating the screw into the inner ring of the spring. When the screw moves upward, it can disengage from the spring, thus facilitating the disassembly of the spring and the first push rod. Similarly, when the screw moves downward, it is also convenient to install the spring and the first push rod. Second, the longer the screw extends into the spring, the shorter the elastically deformable part of the spring, thus adjusting the spring force. Third, the spring is easily deformed, and the screw, when screwed into the inner ring of the spring, has a corrective effect on the shape of the spring. Fourth, the installation height of the spring can be adjusted: when installing the spring, the plug is inserted into the slot, and the spring is lifted to the required height position. Then, the screw is rotated to screw the screw into the spring, thus fixing the spring at that height.

[0020] 3. This invention, by incorporating an airbag, has the following functions: Function 1: Constant gas volume in the airbag: During stamping of parts, the first push rod presses upwards against the airbag and spring, causing both the airbag and spring to accumulate elastic potential energy. When material removal is required, the elastic potential energy of the airbag and spring pushes the first push rod to press the stamped parts, thus achieving material removal. The advantage of this design is that the elastic potential energy of the airbag and spring is greater than that of using only the spring, resulting in better material removal. Furthermore, the extension fills the gap in the spring, providing an auxiliary force for the spring's reset. Function 2: Adjustable gas volume in the airbag: During material removal, gas is injected into the airbag via an air pump, thereby increasing the material removal effect. Function 3: By rotating the screw, the end of the screw presses against the airbag, thereby adjusting the pressure inside the airbag. Additionally, the extension can extend into the gap in the spring, providing an auxiliary force for the spring's reset. With this setting, the screw can be screwed into the spring to different lengths, which can not only change the length of the spring's elastic deformation, but also change the pressure inside the airbag, and also change the compressive force of the extension on the spring.

[0021] 4. In this invention, during use, the screw can be rotated by the drive of a motor and the transmission of a rack and pinion, thereby achieving the above-mentioned function. The air bladder contains a pressure block; when the screw moves downward a certain distance, it can press down on the pressure block, which in turn presses down on the first push rod, thereby increasing the force for material removal.

[0022] 5. This invention, by setting a pressure plate that engages with the upper edge of the cavity, can further bend the stamped parts. Furthermore, the tilt angle of the pressure plate is adjustable, allowing for different degrees of bending on different stamped parts, making processing more flexible. With this design, the portion of the spring screwed into it is non-extensible, thus securing the positioning plate and preventing the pressure plate from moving.

[0023] 6. In this invention, the top block has an embedding groove, and an electromagnet is installed in the embedding groove. The second push rod has a second channel through which the power supply magnet passes. During stripping, the electromagnet opens, thereby attracting the stamped parts and assisting the punch and the stamped parts to separate. For example, the electromagnet switch is set on the concave plate and is a normally closed switch. It opens when the punch reaches the bottom and closes when the punch rises to a predetermined position and disengages from the extrusion.

[0024] 7. In this invention, when the mold is closed, the guide rod moves downward, thereby driving the lever, connecting rod, and second ejector rod to move downward, so that the ejector block reaches the bottom; when the mold is opened, the guide rod moves upward a certain distance, and then the lever is moved upward, thereby driving the second ejector rod to move upward, and the ejector block ejects the stamped parts out of the cavity. Attached Figure Description

[0025] Figure 1 This is a first-view perspective three-dimensional structural diagram of the automotive parts stamping rapid stripping die provided in an embodiment of the present invention;

[0026] Figure 2 This is provided by the embodiments of the present invention. Figure 1 A magnified structural diagram of part A in the middle;

[0027] Figure 3 This is a front view structural diagram of the automotive parts stamping quick stripping die provided in an embodiment of the present invention;

[0028] Figure 4 This is provided by the embodiments of the present invention. Figure 3 Schematic diagram of the cross-sectional structure of the middle BB section;

[0029] Figure 5 This is provided by the embodiments of the present invention. Figure 4 A magnified structural diagram of section C;

[0030] Figure 6 This is a side view of the quick stripping die for stamping automotive parts provided in an embodiment of the present invention.

[0031] Figure 7 This is provided by the embodiments of the present invention. Figure 6 A schematic diagram of the cross-sectional structure of the DD section;

[0032] Figure 8 This is provided by the embodiments of the present invention. Figure 7 A magnified structural diagram of section E in the middle;

[0033] Figure 9 This is a second-view perspective three-dimensional structural diagram of the automotive parts stamping rapid stripping die provided in an embodiment of the present invention;

[0034] Figure 10 This is provided by the embodiments of the present invention. Figure 9 A magnified structural diagram of section F in the middle;

[0035] Figure 11 This is a top view of the rapid stripping die for stamping automotive parts provided in an embodiment of the present invention;

[0036] Figure 12 This is provided by the embodiments of the present invention. Figure 11 A schematic diagram of the cross-sectional structure of the GG section.

[0037] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Punch platen; 4. Punch; 5. Concave platen; 6. Cavity; 7. First receiving groove; 8. First ejector pin; 9. Elastic extrusion part; 91. Spring; 92. Airbag; 93. Extension; 10. First through hole; 11. Ejector block; 12. Second ejector pin; 13. Connector; 131. Screw; 132. First channel; 133. Gear; 134. Motor; 13 5. Toothed rod; 14. Threaded hole; 15. Pressure block; 16. Second receiving groove; 17. Pressure plate; 18. Positioning plate; 41. Limiting hole; 19. Positioning hole; 20. Positioning rod; 21. Embedded groove; 22. Electromagnet; 23. Second channel; 24. Guide rod; 25. Guide sleeve; 26. First slide rail; 27. Second slide rail; 28. Through hole; 29. ​​Third receiving groove; 30. Toggle lever; 31. Connecting rod. Detailed Implementation

[0038] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0039] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0040] See also Figure 1-Figure 5 This invention provides a quick stripping die for stamping automotive parts, comprising an upper die base 1 and a lower die base 2 aligned with each other. A punch 3 is fixedly connected to the lower side of the upper die base 1, and a punch 4 is provided on the lower side of the punch 3. A concave die 5 is fixedly connected to the upper side of the lower die base 2, and a cavity 6 aligned with the punch 4 is provided on the upper side of the concave die 5. A first receiving groove 7 is provided on the lower side of the punch 4 (see reference). Figure 5 The first receiving groove 7 is provided with a first lifting rod 8 that can be raised and lowered, and the upper end of the first lifting rod 8 has an elastic extrusion member 9; the lower mold base 2 and the concave mold plate 5 are respectively provided with a through first hole 10 (see Figure 4 The first through hole 10 is connected to the cavity 6. The bottom of the cavity 6 is provided with a top block 11 that can move up and down. The lower side of the top block 11 is connected to a second top rod 12, which is slidably inserted into the first through hole 10.

[0041] In use, the upper mold base 1 is moved up and down by the hydraulic press to realize mold closing and opening, and to perform stamping and stripping. During stripping, the elastic extrusion member 9 presses down on the first ejector rod 8, thereby separating the stamped parts from the punch 4; and the second ejector rod 12 presses up on the ejector block 11, and the ejector block 11 presses up on the stamped parts, thereby separating the stamped parts from the cavity 6. With this setting, the stamped parts are pressed from the top and bottom at the same time, and the bearing area of ​​the ejector block 11 is large, which facilitates rapid stripping.

[0042] See also Figure 5 The elastic compression member 9 includes a spring 91, one end of which is connected to the upper wall of the first receiving groove 7 via a connector 13, and the lower end of which is fixedly connected to the first top rod 8 via bolts; the upper end of the first receiving groove 7 has a slot, and the connector 13 also includes a plug rod, which is fixedly connected to the upper end of the spring 91. The plug rod and the spring 91 are not coaxial, and the plug rod is inserted into the slot.

[0043] With this configuration, during stamping, the first ejector rod 8 presses the spring 91 upwards. When stripping is required, the spring 91 pushes the first ejector rod 8 downwards, thereby disengaging the stamped part from the punch 4. The insert rod's function is to limit the spring 91, preventing it from rotating.

[0044] The spring 91 can be connected in the following way: a through-hole is provided on the upper mold base 1 and the convex plate 3 respectively, the through-hole is connected to the slot, the upper end of the insert rod passes through the through-hole and extends to the upper side of the upper mold base 1, and the insert rod is fixed by at least one of the following structures: bolt, buckle, and pin.

[0045] See also Figures 3-5 The upper mold base 1 and the convex mold plate 3 are respectively provided with a through threaded hole 14; the connecting member 13 also includes a screw 131, the outer ring of the screw 131 has an external thread, the screw 131 is connected to the threaded hole 14 through the external thread, the pitch of the external thread is equal to the pitch of the spring 91, the direction of rotation of the external thread is equal to the direction of rotation of the spring 91, and the screw 131 can be rotatably connected to the spring 91 through the external thread.

[0046] This design eliminates the need for bolts, clips, or pins to secure the spring 91, and offers the following advantages:

[0047] First, the spring 91 is fixed by rotating the screw 131 into the inner ring of the spring 91. When the screw 131 moves upward, the screw 131 and the spring 91 can be disengaged, which makes it easy to disassemble the spring 91 and the first push rod 8. Similarly, when the screw 131 moves downward, it is also easy to install the spring 91 and the first push rod 8.

[0048] Second, the longer the screw 131 extends into the spring 91, the shorter the elastically deformable part of the spring 91 becomes, thereby adjusting the elastic force of the spring 91.

[0049] Third, the spring 91 is prone to deformation, and the screw 131, after being screwed into the inner ring of the spring 91, has a corrective effect on the shape of the spring 91.

[0050] Fourth, the installation height of the adjustable spring 91: When installing the spring 91, insert the insert rod into the slot and lift the spring 91 to the required height position. Then rotate the screw 131 so that the screw 131 is screwed into the spring 91, thereby fixing the spring 91 at that height.

[0051] See also Figure 5 The elastic compression member 9 also includes an air bladder 92, which is located in the inner ring of the spring 91. The outer ring of the air bladder 92 has an extension 93. When the air pressure of the air bladder 92 is greater than a preset value, the extension 93 extends into the gap of the spring 91. The screw 131 has a first channel 132 inside for accommodating the inflation tube of the air bladder 92.

[0052] In the first working mode, the gas volume of the airbag 92 remains constant (for example, it may not be connected to an air pump): When stamping parts, the first push rod 8 presses the airbag 92 and spring 91 upwards. The airbag 92 and spring 91 simultaneously accumulate elastic potential energy. When stripping is required, the elastic potential energy of the airbag 92 and spring 91 pushes the first push rod 8 to press the stamped parts, thereby achieving stripping. The advantage of this setting is that the elastic potential of the airbag 92 and spring 91 is greater than that of using only spring 91, resulting in a better stripping effect. Furthermore, the extension 93 fills the gap in the spring 91, providing an auxiliary force for the reset of the spring 91.

[0053] Working mode two, gas volume adjustment of airbag 92: During material removal, gas is injected into airbag 92 by air pump, thereby increasing the material removal effect.

[0054] Operating Mode 3: By rotating the screw 131, the end of the screw 131 compresses the air bladder 92 (a protective layer is provided at the contact point to prevent the screw 131 from puncturing the air bladder 92), thereby adjusting the pressure inside the air bladder 92. Furthermore, the extension 93 can extend into the gap of the spring 91, thus providing an auxiliary force for the spring 91's reset. Through this configuration, by screwing the screw 131 into the spring 91 to different lengths, not only can the elastically deformable length of the spring 91 be changed, but also the pressure inside the air bladder 92 can be altered, and the compressive force of the extension 93 on the spring 91 can be varied.

[0055] See also Figure 1 , Figure 2 and Figure 5 The upper end of the screw 131 extends to the upper side of the upper mold base 1, and a gear 133 is fixedly connected to the upper end of the screw 131. The upper mold base 1 is equipped with a motor 134, and a rack 135 is fixedly connected to the output end of the motor 134. The rack 135 and the gear 133 mesh. In use, the screw 131 can be rotated by the drive of the motor 134 and the transmission of the rack 135 and the gear 133, thereby realizing the above-mentioned function.

[0056] Furthermore, the airbag 92 has a pressure block 15. When the screw 131 moves downward a certain distance, it can press the pressure block 15 downward, and then the pressure block 15 presses the first push rod 8 downward, thereby increasing the force of material removal.

[0057] Please refer to the figure. Figures 6-10 The punch 4 has a second receiving groove 16 on both sides. A pressure plate 17 is rotatably connected to the opening of the second receiving groove 16. A positioning plate 18 is fixedly connected to one side of the pressure plate 17. The second receiving groove 16 and the first receiving groove 7 are connected. The positioning plate 18 can be inserted into the gap of the spring 91.

[0058] In use, the pressure plate 17, in conjunction with the upper edge of the cavity 6, further bends the stamped parts. Furthermore, the tilt angle of the pressure plate 17 is adjustable, allowing for different degrees of bending on different stamped parts, making processing more flexible. With this design, the portion of the spring 91 screwed into by the screw 131 is non-extensible, thus locking the positioning plate 18 and preventing the pressure plate 17 from moving.

[0059] The end of the positioning plate 18 is provided with a positioning hole 19; the punch 4 is provided with a plurality of limiting holes 41, the limiting holes 41 are arranged in an arc shape at equal intervals relative to the rotation axis of the pressure plate 17; a positioning rod 20 is inserted into one of the limiting holes 41, and the positioning rod 20 can be inserted into the positioning hole 19.

[0060] See also Figure 4The top block 11 has an embedding groove 21, and an electromagnet 22 is provided in the embedding groove 21. The second push rod 12 has a second channel 23 for guiding the electromagnet 22 through. During stripping, the electromagnet 22 opens, thereby attracting the stamped parts and assisting the punch 4 and the stamped parts to separate. For example, the switch of the electromagnet 22 is set on the concave plate 5 and is a normally closed switch. It opens when the punch 4 reaches the bottom and closes when the punch 4 rises to a predetermined position and disengages from the extrusion.

[0061] See also Figure 4 , Figure 9 , Figure 11 and Figure 12 A guide rod 24 is fixedly connected to the upper mold base 1, and a guide sleeve 25 is embedded in the lower mold base 2. The guide rod 24 is slidably inserted into the guide sleeve 25. The two guide sleeves 25 arranged diagonally are provided with first slide rails 26 (see reference). Figure 9 The guide rod 24 is provided with a second slide rail 27, and the second push rod 12 is provided with a through hole 28; the lower mold base 2 has a third receiving groove 29, and the third receiving groove 29 has a lever 30, the end of the lever 30 passing through the first slide rail 26 and extending into the second slide rail 27; a connecting rod 31 is provided through the through hole 28, and the connecting rod 31 is inserted into the lever 30.

[0062] With this setup, when the mold is closed, the guide rod 24 moves downward, thereby driving the lever 30, connecting rod 31, and second ejector 12 to move downward, so that the ejector block 11 reaches the bottom. When the mold is opened, the guide rod 24 moves upward a certain distance (at this time, the lever 30 slides in the first slide rail 26), and then the lever 30 is moved upward, thereby driving the second ejector 12 to move upward, and the ejector block 11 ejects the stamped parts out of the cavity 6.

[0063] Working principle of the invention:

[0064] In use, the upper mold base 1 is moved up and down by the hydraulic press to realize mold closing and opening, and to perform stamping and stripping. During stripping, the elastic extrusion member 9 presses down on the first ejector rod 8, thereby separating the stamped parts from the punch 4; and the second ejector rod 12 presses up on the ejector block 11, and the ejector block 11 presses up on the stamped parts, thereby separating the stamped parts from the cavity 6. With this setting, the stamped parts are pressed from the top and bottom at the same time, and the bearing area of ​​the ejector block 11 is large, which facilitates rapid stripping.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick stripping die for stamping automotive parts, comprising an upper die base (1) and a lower die base (2) aligned with each other, wherein a punch plate (3) is fixedly connected to the lower side of the upper die base (1), and a punch (4) is provided on the lower side of the punch plate (3); a concave die plate (5) is fixedly connected to the upper side of the lower die base (2), and a cavity (6) aligned with the punch (4) is provided on the upper side of the concave die plate (5), characterized in that: The punch (4) has a first receiving groove (7) on its lower side, and a first push rod (8) that can be raised and lowered is provided in the first receiving groove (7). The upper end of the first push rod (8) has an elastic extrusion member (9). The lower mold base (2) and the concave mold plate (5) are respectively provided with a through first hole (10), the first through hole (10) is connected to the cavity (6), the bottom of the cavity (6) is provided with a top block (11) that can move up and down, the lower side of the top block (11) is connected to a second top rod (12), and the second top rod (12) is slidably inserted into the first through hole (10); The elastic compression member (9) includes a spring (91), one end of which is connected to the upper wall of the first receiving groove (7) via a connector (13), and the lower end of which is fixedly connected to the first top rod (8) via bolts; the upper end of the first receiving groove (7) has a slot, and the connector (13) also includes a plug rod, which is fixedly connected to the upper end of the spring (91), and the plug rod and the spring (91) are not coaxially arranged, and the plug rod is inserted into the slot; The upper mold base (1) and the convex mold plate (3) are respectively provided with a through threaded hole (14); the connecting member (13) also includes a screw (131), the outer ring of the screw (131) has an external thread, the screw (131) is connected to the threaded hole (14) through the external thread, the pitch of the external thread is equal to the pitch of the spring (91), the direction of rotation of the external thread is equal to the direction of rotation of the spring (91), and the screw (131) can be rotatably connected to the spring (91) through the external thread; The spring (91) is fixed by rotating the screw (131) into the inner ring of the spring (91). When the screw (131) moves upward, it disengages from the spring (91), making it easier to disassemble the spring (91) and the first push rod (8). When the screw (131) moves downward, it is also easier to install the spring (91) and the first push rod (8). The longer the screw (131) extends into the spring (91), the shorter the elastically deformable part of the spring (91) becomes, thereby adjusting the elastic force of the spring (91).

2. The quick stripping die for stamping automotive parts as described in claim 1, characterized in that: The elastic extrusion member (9) also includes an air bladder (92), which is located in the inner ring of the spring (91). The outer ring of the air bladder (92) has an extension (93). When the air pressure of the air bladder (92) is greater than a preset value, the extension (93) extends into the gap of the spring (91). The screw (131) has a first channel (132) inside for accommodating the air bladder (92) inflation conduit.

3. The quick stripping die for stamping automotive parts as described in claim 2, characterized in that: The upper end of the screw (131) extends to the upper side of the upper mold base (1), and a gear (133) is fixedly connected to the upper end of the screw (131); the upper mold base (1) is provided with a motor (134), and a rack (135) is fixedly connected to the output end of the motor (134), and the rack (135) and the gear (133) mesh.

4. The quick stripping die for stamping automotive parts as described in claim 3, characterized in that: The punch (4) has a second receiving groove (16) on both sides. A pressure plate (17) is rotatably connected to the opening of the second receiving groove (16). A positioning plate (18) is fixedly connected to one side of the pressure plate (17). The second receiving groove (16) and the first receiving groove (7) are connected. The positioning plate (18) can be inserted into the gap of the spring (91).

5. The quick stripping die for stamping automotive parts as described in claim 4, characterized in that: The end of the positioning plate (18) is provided with a positioning hole (19); the punch (4) is provided with a plurality of limiting holes (41), the limiting holes (41) are arranged in an arc shape at equal intervals relative to the rotation axis of the pressure plate (17); a positioning rod (20) is inserted into one of the limiting holes (41), and the positioning rod (20) can be inserted into the positioning hole (19).

6. The quick stripping die for stamping automotive parts as described in claim 1, characterized in that: The top block (11) has an embedding groove (21), and an electromagnet (22) is provided in the embedding groove (21). The second top rod (12) has a second channel (23) for guiding the electromagnet (22) through.

7. The quick stripping die for stamping automotive parts as described in claim 6, characterized in that: A guide rod (24) is fixedly connected to the upper mold base (1), and a guide sleeve (25) is embedded in the lower mold base (2). The guide rod (24) is slidably inserted into the guide sleeve (25). The two guide sleeves (25) arranged diagonally are provided with a first slide rail (26), the guide rod (24) is provided with a second slide rail (27), and the second top rod (12) is provided with a through hole (28). The lower mold base (2) has a third receiving groove (29), and the third receiving groove (29) has a lever (30). The end of the lever (30) passes through the first slide rail (26) and extends into the second slide rail (27). A connecting rod (31) is provided through the through hole (28), and the connecting rod (31) is inserted into the lever (30).

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