Stamping dies and stamping equipment

Abstract

This invention proposes a stamping die and stamping equipment. The stamping die includes a fixed die, a moving die, and a buffer structure. The fixed die includes a blank holder and a float. The blank holder has a die groove on its loading surface. The float is located in the die groove and can slide along the depth direction of the groove. The moving die includes a blank ejector plate and a punch. The blank ejector plate is positioned opposite to the loading surface and can move towards and away from the loading surface. The punch is movably inserted through the blank ejector plate and is positioned towards the die groove. At least part of the buffer structure is located in the fixed die and connects to the float after the punch has stamped, so as to fix the float before the blank ejector plate detaches from the loading surface. During stamping, the punch pushes the material, stretching the material and causing the float to slide away from the moving die. The buffer structure fixes the float until the blank ejector plate detaches from the fixed die. The technical solution of this application can improve the production yield of stamped products.

Description

Technical Field

[0001] This invention relates to the field of stamping technology, and in particular to a stamping die and stamping equipment. Background Technology

[0002] In conventional cold stamping and deep drawing processes, the moving die's blank holder and the fixed die's lower blank holder plate need to press down on the workpiece's skirt. This allows the moving die punch and the fixed die's float to press down on the bottom center of the product. When the punch travels a certain distance towards the fixed die, it stretches and deforms the product while simultaneously causing the top die float to compress the spring. With this setup, when the punch retracts, the product's skirt is still pressed down by the blank holder and lower blank holder plate. At this point, the punch no longer presses down on the product and the float, but the float, under the action of elasticity, has a pushing force that pushes down on the product. If the product material is thin or soft, it is easily deformed or damaged under the pressure of the float, affecting the product's yield. Summary of the Invention

[0003] The main objective of this invention is to provide a stamping die and stamping equipment, which aim to improve the yield of stamped products.

[0004] To achieve the above objectives, the present invention provides a stamping die, comprising:

[0005] The fixed mold includes a lower pressure plate and a floating block. The material-carrying surface of the lower pressure plate is provided with a cavity groove. The floating block is disposed in the cavity groove and can slide along the depth direction of the cavity groove.

[0006] A moving die, comprising a blank holder and a punch, wherein the blank holder is disposed opposite to the material loading surface and is movable toward and away from the material loading surface, and the punch is movably disposed through the blank holder and toward the die cavity; and

[0007] A buffer structure, at least partially located in the fixed mold, is connected to the float after being punched by the punch, so as to fix the float before the pressure plate is separated from the load.

[0008] In one embodiment of this application, a limiting groove is formed on the side wall of the float, and the buffer structure includes a brake pin. The brake pin is movably disposed on the lower template of the pressing material. The sliding direction of the brake pin is set at an angle with the sliding direction of the float. The brake pin is disposed toward the float and can move in and out of the limiting groove.

[0009] In one embodiment of this application, the buffer structure further includes a driving structure, which is kinetically connected to the brake pin to drive the brake pin to slide.

[0010] In one embodiment of this application, at least a portion of the drive structure is slidably disposed, and the sliding direction of the drive structure is set at an angle to the sliding direction of the brake pin. The drive structure is provided with a guide rail, and one end of the brake pin is slidably disposed on the sliding rail.

[0011] When the drive structure slides, one end of the brake pin slides along the guide rail, so that the brake pin slides in the lower pressure template to enter and exit the limiting groove.

[0012] In one embodiment of this application, the sliding direction of the driving structure is the same as the sliding direction of the moving mold.

[0013] In one embodiment of this application, the driving structure includes:

[0014] A guide member, disposed in the fixed mold and slidably disposed in the lower blank holder, the guide member having a guide rail extending away from the moving mold and the limiting groove; and

[0015] A pusher, which is retractably inserted into the lower template of the pressure material, pushes the guide to slide and drives the brake pin to slide into the limiting groove.

[0016] In one embodiment of this application, the guide member has a first strip-shaped hole, which extends away from the moving mold and the limiting groove to form the guide track;

[0017] One end of the brake pin is provided with a limiting part, which is slidably disposed in the first strip hole.

[0018] In one embodiment of this application, the lower template for pressing material is provided with a second strip-shaped hole. The second strip-shaped hole extends along the direction in which the brake pin slides in and out of the limiting groove and is disposed opposite to the first strip-shaped hole. The limiting part passes through the first strip-shaped hole and the second strip-shaped hole and moves along the first strip-shaped hole and the second strip-shaped hole.

[0019] In one embodiment of this application, the buffer structure further includes a reset member, which is connected to the brake pin or the drive structure to drive the drive structure to reset and cause the brake pin to exit the limiting groove.

[0020] In one embodiment of this application, the reset member is an elastic reset member, which is disposed at one end of the drive structure near the brake pin and elastically abuts against the drive structure.

[0021] In one embodiment of this application, the driving structure further includes an elastic pusher, which is disposed on the side of the driving structure opposite to the elastic reset member, abuts against the driving structure, and can move together with the driving structure toward the elastic reset member.

[0022] During the process of the drive structure driving the brake pin to move until the pressure plate disengages from the fixed mold, the pushing force of the elastic pusher on the drive structure is greater than the pushing force of the elastic reset member on the drive structure.

[0023] In one embodiment of this application, the moving mold, the elastic pusher, and at least a portion of the driving structure are disposed on the same movable structure, so as to move closer to or further away from the fixed mold along with the movable structure;

[0024] During the process from the insertion of the brake pin into the limiting groove until the pressure plate is disengaged from the fixed mold, the elastic pusher is in a compressed state.

[0025] In one embodiment of this application, the width of the limiting groove is greater than the width of the brake pin in the direction of movement of the float.

[0026] This application also proposes a stamping apparatus, which includes a stamping die as described in any of the preceding claims.

[0027] The technical solution of this invention involves setting a buffer structure in the stamping die. When the punch presses the material, stretching and shaping it into a product and pressing down the float, the buffer structure can fix the float, preventing it from rebounding and damaging the product during the punch retraction and separation of the pressure plate from the lower die. After the pressure plate separates from the lower die, the product can be removed first, and then the buffer structure can release the float to reset it. Alternatively, the buffer structure can be released directly. In this case, since the product skirt is not pressed by the pressure plate, the product will not be subjected to pressure in the opposite direction of the float's rebound when it rebounds. The float can then push the product out without damaging it. In other words, by setting a buffer structure, this invention delays the float's reset time, thereby avoiding damage to the product during the float's reset and improving the production yield of stamped products. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. 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 the structures shown in these drawings without creative effort.

[0029] Figure 1This is a structural diagram of the blank holder and the blank holder template clamping the material in an embodiment of the stamping die of the present invention before punching;

[0030] Figure 2 for Figure 1 A structural diagram of a punch in a medium-pressure die for pressing material, causing material stretching, and a driving structure for locking the float.

[0031] Figure 3 for Figure 2 A structural diagram of a punch retracting from the die cavity and the drive structure locking the float in a medium-pressure die.

[0032] Explanation of icon numbers:

[0033]

[0034]

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0040] This invention proposes a stamping die 100.

[0041] Please refer to Figures 1 to 3 In some embodiments of this application, the stamping die 100 includes:

[0042] The fixed mold 10 includes a lower pressure plate 11 and a floating block 13. The material loading surface of the lower pressure plate 11 is provided with a cavity groove 111. The floating block 13 is disposed in the cavity groove 111 and can slide along the depth direction of the cavity groove 111.

[0043] A moving die 30 includes a blank holder 31 and a punch 33. The blank holder 31 is disposed opposite to the material loading surface and is movable toward and away from the material loading surface. The punch 33 is movably disposed through the blank holder 31 and is disposed toward the die cavity 111.

[0044] A buffer structure 50, at least a portion of which is disposed on the fixed mold 10, and connected to the float 13 after being punched by the punch 33, so as to fix the float 13 before the material release plate 31 is separated from the material carrier.

[0045] The stamping die 100 proposed in this application is mostly used in cold stamping and stretching processes, and is intended to use the punch 33 to stamp the material 200 to stretch and deform the material 200 into the desired shape. Specifically, the stamping die 100 includes a moving die 30 and a fixed die 10. The fixed die 10 includes a blank holder 11 and a float 13. The blank holder 11 has a die groove 111 on its loading surface. The die groove 111 is designed to provide space for the stretching deformation of the product 210. The depth of the die groove 111 can be set according to the required stretching height of the product 210 and the installation height of components such as the float 13 and the elastic element 15. Alternatively, the bottom of the die groove 111 can be completely through. The float 13 is disposed in the die groove 111 and is usually provided with an elastic element 15 that elastically abuts against the float 13, giving the float 13 a tendency to move toward the opening of the die groove 111. This allows the float 13 to be flush with the opening of the die groove 111 when not under pressure. Alternatively, it can be set slightly higher or lower than the opening of the die groove 111. In this configuration, when the raw material 200 is placed on the lower die platen 11, the float 13 can support the raw material 200. Thus, when the punch 33 of the moving die 30 presses the material 200, the material 200 located at the slot will always be clamped between the punch 33 and the float 13 during the pressing process, thereby preventing the product 210 from being misaligned or deformed during stretching and improving the structural stability of the product 210 during the pressing process. In some embodiments, the elastic element 15 can be directly abutted against the float 13. Alternatively, a supporting element 17 can be provided between the float 13 and the elastic element 15 to connect the elastic element 15 and the float 13. In addition, the die groove 111 can be configured to pass through the lower die platen 11, so that both the supporting element 17 and the elastic element 15 are located outside the lower die platen 11, so as to facilitate the maintenance and replacement of the elastic element 15. The moving die 30, which is equipped with a punch 33, also includes a blank holder 31. The punch 33 is movably inserted into the blank holder 31 and is positioned toward the die cavity 111 of the blank holder 11. The blank holder 31 can move closer to and away from the blank holder 11. When the stamping die 100 is used in a stamping equipment, the moving die 30 is driven by the drive assembly to move the blank holder 31 closer to or away from the blank holder 11. The punch 33 can move closer to or away from the blank holder 11 with the blank holder 31, and can also be driven independently to move relative to the blank holder 31 to enter and exit the die cavity 111 to stamp the material 200 and stretch the material 200 into shape.

[0046] The stamping die 100 proposed in this application also includes a buffer structure 50, such that at least a portion of the buffer structure 50 is located in the fixed die 10, and the float 13 can be locked after the punch 33 stretches the product 210 and drives the float 13 to press down; thus, when the stamping die 100 of this application is used for stamping, the material 200 is placed on the loading surface of the blank holder 11, and the part of the material 200 to be stretched covers the opening of the die cavity 111, and the drive assembly of the stamping equipment... The moving die 30 is driven to move towards the material loading surface, causing the blank holder 31 to press against the material 200. At this time, the skirt of the material 200 is held between the blank holder 31 and the lower blank holder 11. The part of the material 200 to be punched and stretched is located between the punch 33 and the float 13. The punch 33 is then driven to punch the material 200 to stretch it. At the same time, the material 200 pushes the float 13 to slide along the die groove 111. After the material 200 is stretched and formed, the buffer structure 50 and the float 13 are connected. The connection is used to fix the float 13; then the punch 33 is removed from the die cavity 111 and away from the material 200. At this time, since the float 13 is fixed, it can avoid the float 13 from rebounding due to the action of the elastic element 15 connected to it, thereby avoiding deformation or damage caused by the float 13 pressing on the stretched part of the product 210 due to unidirectional force; after the punch 33 is removed, the pressure plate 31 is moved away from the fixed mold 10. At this time, the skirt of the product 210 is not clamped and is only supported by the lower pressure plate 1. On the material-carrying surface of 1, the product 210 can be removed directly, or the buffer structure 50 can release the float 13, and the product 210 can be ejected from the die groove 111 by the rebounding float 13. At this time, since the skirt of the product 210 is not pressed by the pressure plate 31, the product 210 will not be subjected to pressure opposite to the rebound direction of the float 13 when the float 13 rebounds. The product 210 will not be damaged when the float 13 is ejected, and it is also more convenient to remove the product 210.

[0047] In this embodiment, the buffer structure 50 can be a magnetic attraction structure. For example, magnets are respectively provided at the bottom of the float 13 and the cavity groove 111. When the float 13 is pressed by the punch 33 and moves towards the bottom of the cavity groove 111, the magnets attract each other to lock the float 13. Thus, when the punch 33 exits and moves away from the product 210 and the float 13, the float 13 will not push against the product 210. The magnet can be a permanent magnet, and the float 13 can be reset by manually separating the magnet. Alternatively, an electromagnet can be provided, and when the power is off, the electromagnet loses its magnetism, causing the float 13 to reset. The buffer structure 50 can also be a vacuum adsorption structure, a snap-fit ​​structure, a clamping structure, or the brake pin 51 in the following embodiment, which is not limited here.

[0048] Therefore, it is understandable that in the technical solution of the present invention, a buffer structure 50 is provided in the stamping die 100. When the punch 33 presses the material 200 to stretch and form the product 210 and presses down the float 13, the buffer structure 50 can fix the float 13, preventing the float 13 from rebounding and damaging the product 210 during the process of the punch 33 retracting and the separation of the pressure plate 31 from the pressure plate 11. After the pressure plate 31 separates from the pressure plate 11, the product 210 can be removed first and then the buffer structure 50 can be used to release the float 13 to reset it. Alternatively, the buffer structure 50 can be used to release the float 13 directly. At this time, since the skirt of the product 210 is not pressed by the pressure plate 31, the product 210 will not be subjected to pressure opposite to the rebound direction of the float 13 when the float 13 rebounds. At this time, the float 13 can push out the product 210, and the product 210 will not be damaged. In other words, by setting the buffer structure 50, the present invention delays the reset time of the float 13, thereby avoiding damage to the product 210 when the float 13 resets, and improving the production yield of the stamped product 210.

[0049] Please refer to Figures 1 to 3 In some embodiments of this application, the side wall of the float 13 is provided with a limiting groove 131, the buffer structure 50 includes a brake pin 51, the brake pin 51 is movably disposed on the lower template 11 of the pressing material, the sliding direction of the brake pin 51 is set at an angle with the sliding direction of the float 13, the brake pin 51 is disposed toward the float 13, and can move in and out of the limiting groove 131.

[0050] In this embodiment, a limiting groove 131 is provided on the side wall of the float 13, and a brake pin 51 is provided in the buffer structure 50 and inserted into the fixed mold 10. The brake pin 51 can be movably disposed to enter and exit the limiting groove 131. When the brake pin 51 is inserted into the limiting groove 131, it restricts the sliding of the float 13 in the cavity mold groove 111, and prevents the float 13 from resetting to the opening of the cavity mold groove 111 under the action of the elastic member 15, thereby damaging the product 210. When the brake pin 51 is withdrawn from the limiting groove 131, it releases the lock on the float 13, so that the float 13 can reset to the opening of the cavity mold groove 111 under the action of the elastic member 15.

[0051] The movement of the brake pin 51 can be manually driven or controlled by a drive mechanism such as a motor, cylinder, or hydraulic cylinder. For example, a motor can be used to control the extension and retraction of the brake pin 51 through a screw drive mechanism or belt drive mechanism. Alternatively, a cylinder, hydraulic cylinder, or linear motor can be used to directly drive the extension and retraction of the brake pin 51. No limitation is made here.

[0052] Please refer to Figures 1 to 3In some embodiments of this application, the buffer structure 50 further includes a drive structure 53, which is connected to the brake pin 51 to drive the brake pin 51 to slide.

[0053] In this embodiment, the buffer structure 50 further includes a drive structure 53, which is connected to the brake pin 51 for driving the brake pin 51 to move in and out of the limiting groove 131. The drive structure 53 can be controlled by a motor, cylinder, hydraulic cylinder, or other drive component. For example, a motor can be used to control the extension and retraction of the brake pin 51 through a lead screw drive mechanism or belt drive mechanism. Alternatively, a cylinder, hydraulic cylinder, or linear motor can directly drive the extension and retraction of the brake pin 51. No limitation is made here. The setting of the drive structure 53 makes the movement control of the brake pin 51 more automated, reduces user operation, and improves the ease of operation of the stamping die 100 and the stamping equipment.

[0054] Please refer to Figures 1 to 3 In some embodiments of this application, at least part of the drive structure 53 is slidably disposed, and the sliding direction of the drive structure 53 is set at an angle to the sliding direction of the brake pin 51. The drive structure 53 is provided with a guide rail 537, and one end of the brake pin 51 is slidably disposed on the guide rail 537.

[0055] When the drive structure 53 slides, one end of the brake pin 51 slides along the guide rail 537, so that the brake pin 51 slides in the lower template 11 to enter and exit the limiting groove 131.

[0056] In this embodiment, the drive structure 53 is slidably disposed, and the sliding direction of the drive structure 53 is set at an angle to the sliding direction of the brake pin 51. A guide rail 537 is provided on the drive structure 53. The guide rail 537 can be a guide slope, a guide groove, or a strip hole as in the following embodiment. The sliding direction of the drive structure 53 is defined to have a first direction and a second direction that are opposite to each other. When the drive structure 53 slides in the first direction, it can drive the brake pin 51 into the limiting groove 131. When the drive structure 53 slides in the second direction, the brake pin 51 can slide out of the limiting groove 131. Specifically, the guide rail 537 extends in the first direction away from the limiting groove 131. One end of the brake pin 51, away from the limiting groove 131, is slidably mounted on the guide rail 537. When the drive structure 53 slides in the first direction, it pushes the brake pin 51, causing it to slide relative to the guide rail 537. This allows the brake pin 51 to slide towards the limiting groove 131 and enter the limiting groove 131, thus fixing the float 13. Alternatively, one end of the brake pin 51 can be slidably connected to the guide rail 537, so that when the drive structure 53 slides in the second direction, the drive... The moving structure 53 can also pull the brake pin 51 to slide along the guide rail 537 and exit the limiting groove 131; of course, the brake pin 51 can also be disengaged from the guide rail 537. When the driving structure 53 slides in the second direction, the driving structure 53 moves away from the brake pin 51. At this time, the brake pin 51 is not subject to the pushing force of the driving structure 53 and can be manually driven to exit from the limiting groove 131. Alternatively, a spring or other reset component 55 can be set to drive the brake pin 51 to reset, or the direction of movement of the brake pin 51 can be made to be the direction of gravity. When the guide component 531 retracts, the brake pin 51 slides out of the limiting groove 131 under the action of gravity.

[0057] Please refer to Figures 1 to 3 In some embodiments of this application, the sliding direction of the driving structure 53 is the same as the sliding direction of the moving mold 30.

[0058] In this embodiment, the sliding direction of the drive structure 53 is consistent with the sliding direction of the moving mold 30. With this configuration, when stamping product 210 using the stamping die 100 of this embodiment, only the direction of the moving mold 30 needs to be reserved for movement. This eliminates the need to reserve movement and operation space in different positions of the fixed die 10 due to the inconsistent sliding directions of the drive structure 53 and the moving mold 30, thereby reducing the usable space of the stamping die 100. Alternatively, in the following embodiment, the moving mold 30 and the drive structure 53 can both be mounted on the same movable structure and driven by the same drive component of the stamping equipment. This reduces the number of drive components in the stamping equipment and allows the movement of the float 13 and the brake pin 51 to occur simultaneously. It eliminates the need to push the float 13 into place before driving the brake pin 51, shortening the operation time of stamping and locking the float 13, and improving production efficiency.

[0059] Please refer to Figures 1 to 3 In some embodiments of this application, the driving structure 53 includes:

[0060] Guide member 531, the guide member 531 is disposed in the fixed mold 10 and slidably disposed in the lower pressure mold 11, the guide member 531 is provided with the guide rail 537; and

[0061] Pushing member 533 is telescopically inserted into the lower template 11 of the pressing material to push the guide member 531 to slide and drive the brake pin 51 to slide into the limiting groove 131.

[0062] In this embodiment, the drive structure 53 includes a guide member 531 and a pusher member 533. The guide member 531 is slidable relative to the fixed mold 10, and the sliding direction of the guide member 531 is set at an angle to the sliding direction of the brake pin 51. The guide member 531 is provided with the aforementioned guide rail 537. At this time, when the pusher member 533 pushes the guide member 531 to slide, the guide member 531 can push the brake pin 51 so that the brake pin 51 slides along the guide rail 537 toward the float 13 and is inserted into the limiting groove 131 to lock the float 13. In this embodiment, the pusher 533 can be connected to the guide 531 so that when the pusher 533 retracts, it can pull the guide 531 to reset together. Alternatively, in the following embodiment, an elastic reset member 55 can be provided to drive the guide 531 to reset when the pusher 533 retracts. When the guide 531 is reset, the brake pin 51 is not held by the guide 531 and can be manually driven out of the limiting groove 131. Alternatively, a spring or other reset member 55 can be provided to drive the brake pin 51 to reset. Or, the direction of movement of the brake pin 51 can be made to be the direction of gravity, so that when the guide 531 retracts, the brake pin 51 slides out of the limiting groove 131 under the action of gravity. Alternatively, in the following embodiment, one end of the brake pin 51 is slidably connected to the guide 531, so that one end of the brake pin 51 is always located on the guide rail 537, so that when the guide 531 retracts, the brake pin 51 is pulled out of the limiting groove 131.

[0063] In addition, the drive structure 53 is configured as a combination of the pusher 533 and the guide 531. If the pusher 533 only abuts against the guide 531, and the pusher 533 and the guide 531 can be separated, the pusher 533 can completely withdraw from the lower die platen 11, so as to facilitate the disassembly, assembly and transportation of the stamping die 100. In some embodiments, when the drive structure 53 and the moving die 30 are located on the same side of the fixed die 10, the pusher 533 can completely withdraw from the lower die platen 11, which also allows the drive structure 53 and the moving die 30 in front of the fixed die 10 to be completely removed during stripping, so as to avoid obstructing the user's material handling process.

[0064] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the guide member 531 has a first strip hole to form the guide track 537, and the first strip hole extends in a direction away from the moving mold 30 and the limiting groove 131;

[0065] One end of the brake pin 51 is provided with a limiting part 511, which is slidably disposed in the first strip hole.

[0066] In this embodiment, a first strip-shaped hole is provided on the guide member 531 as a guide rail 537, and a limiting part 511 is provided on the brake pin 51 and slidably inserted into the first strip-shaped hole. This arrangement allows one end of the brake pin 51 to be slidably connected to the guide member 531 through the limiting part 511, so that the brake pin 51 can always be slidably connected to the guide member 531 and move along with the guide member 531 during its reciprocating motion. Only a reset member 55 needs to be provided to be driven to reset the brake pin 51 and the guide member 531 simultaneously by being driven to retract the guide member 531 and reset the brake pin 51, without the need to provide separate driving members to drive the guide member 531 to retract and to drive the brake pin 51 to reset. This reduces the number of parts in the stamping die 100 and simplifies the structure of the stamping die 100 and the stamping equipment.

[0067] Please refer to Figure 1 and Figure 2 In some embodiments of this application, the lower template 11 for pressing material is provided with a second strip hole 113. The second strip hole 113 extends along the direction in which the brake pin 51 slides in and out of the limiting groove 131 and is disposed opposite to the first strip hole. The limiting part 511 passes through the first strip hole and the second strip hole 113 and moves along the first strip hole and the second strip hole 113.

[0068] The aforementioned embodiment provides a technical solution in which the brake pin 51 is slidably disposed on the lower template 11 of the pressure material, and one end of the brake pin 51 is slidably connected to the guide member 531. This allows the brake pin 51 to slide along the first guide hole and insert into the limiting groove 131 of the float 13 during the sliding process of the pusher 533 pushing the guide member 531. In this embodiment, a second strip-shaped hole 113 is provided on the lower template 11 of the pressure material. The second strip-shaped hole 113 extends along the sliding direction of the brake pin 51, and the limiting portion 511 at the end of the brake pin 51 passes through both the first strip-shaped hole and the second strip-shaped hole 113. The second strip-shaped hole 113 limits the sliding path of the brake pin 51, ensuring that the brake pin 51 can only slide along the length direction of the second strip-shaped hole 113. This prevents the brake pin 51 from being misaligned and unable to insert into the limiting groove 131 due to the force exerted on the guide member 531 during sliding, thus improving the positional stability of the brake pin 51 during the sliding process.

[0069] Please refer to Figures 1 to 3 In some embodiments of this application, the buffer structure 50 further includes a reset member 55, which is connected to the brake pin 51 or the drive structure 53 to drive the drive structure 53 to reset and cause the brake pin 51 to exit the limiting groove 131.

[0070] In this embodiment, the buffer structure 50 further includes a reset member 55, which is connected to the brake pin 51 or the drive structure 53. The reset member 55 can drive the brake pin 51 and the drive structure 53 to reset. When the reset member 55 is connected to the brake pin 51, the pusher 533 moves away from the guide member 531, so that the guide member 531 is no longer subjected to the pushing force of the pusher 533. The reset member 55 drives the brake pin 51 to slide out of the limiting groove 131. At the same time, the brake pin 51 abuts against the guide rail 537 of the guide member 531 and slides along the guide rail 537, thereby driving the guide member 531... Retraction and reset; when the reset member 55 is connected to the drive structure 53, the reset member 55 drives the drive structure 53 to reset towards the moving mold 30. Since one end of the brake pin 51 is slidably connected to the guide rail 537, the drive structure 53 can pull the brake pin 51 out of the limiting groove 131 during the reset process. In some embodiments, the drive structure 53 includes a pusher 533 and a guide 531. In this case, the reset member 55 can be connected to the guide 531 to drive the guide 531 to reset, thereby causing the brake pin 51 to exit the limiting groove 131. The reset member 55 can be a motor, cylinder, hydraulic cylinder, or other drive member. For example, a rotary motor can be used to control the extension and retraction of the brake pin 51 through a screw drive mechanism, belt drive mechanism, etc. It can also be a cylinder, hydraulic cylinder, or linear motor that directly drives the extension and retraction of the brake pin 51. It can also be provided with an elastic reset member 55 as in the following embodiments, which is not limited here.

[0071] Please refer to Figures 1 to 3 In some embodiments of this application, the reset member 55 is an elastic reset member 55, which is disposed at one end of the drive structure 53 near the brake pin 51 and elastically abuts against the drive structure 53.

[0072] In this embodiment, the reset member 55 can be configured as a spring, elastic pin, elastic airbag, or spring sheet, etc. The elastic reset member 55 is set at one end of the drive structure 53 near the brake pin 51. It can be used to drive the drive structure 53 back when the stamping equipment removes the pushing force on the drive structure 53, thereby driving the brake pin 51 out of the limiting groove 131. In some embodiments, the drive structure 53 includes a pusher 533 and a guide 531. The elastic reset member 55 can be set at the end of the guide 531 away from the pusher 533. In this case, when the stamping equipment removes the driving force on the pusher 533 or drives the pusher 533 back, the elastic reset member 55 drives the guide 531 back, thereby driving the brake pin 51 out of the limiting groove 131, so as to release the float 13 and reset the float 13. Using an elastic structure as the reset member 55, the structure is relatively simple. There is no need to set an additional drive member. The elastic force can be generated by the deformation of the elastic structure as the driving force.

[0073] In some embodiments, to facilitate the replacement of the elastic reset member 55, the elastic reset member 55 is disposed on the outside of the lower pressure platen 11, and the drive structure 53 extends outward from the lower pressure platen 11. For example, when the drive structure 53 is provided with a pusher 533 and a guide 531, the drive structure 53 may also include an elastic pin 535, such that one end of the elastic pin 535 abuts against one end of the guide 531 away from the pusher 533, and the other end of the elastic pin 535 extends outward from the lower pressure platen 11 and abuts against the elastic reset member 55.

[0074] Combined with reference Figure 1 and Figure 3 In some embodiments of this application, the driving structure 53 further includes an elastic pusher 57, which is disposed on the side of the driving structure 53 away from the elastic reset member 55, and abuts against the driving structure 53, and can move together with the driving structure 53 toward the elastic reset member 55.

[0075] During the process in which the drive structure 53 drives the brake pin 51 to move until the pressure plate 31 disengages from the fixed mold 10, the pushing force of the elastic push member 57 on the drive structure 53 is greater than the pushing force of the elastic reset member 55 on the drive structure 53.

[0076] In this embodiment, the buffer structure 50 further includes an elastic pusher 57, which abuts against the side of the drive structure 53 opposite to the elastic reset member 55. The elastic pusher 57 and the drive structure 53 can be driven simultaneously to move toward the elastic reset member 55. This arrangement allows the elastic pusher 57 to buffer and protect the drive structure 53. For example, if the drive structure 53 is obstructed during its movement or if the resistance increases due to other factors, preventing it from moving toward the elastic reset member 55, the elastic pusher 57 can contract to provide a buffering effect, preventing the drive structure 53 from moving away from the elastic reset member 55. 3. Damage under the pressure of driving force and resistance; or, in some embodiments, the driving structure 53 includes a pusher 533 and a guide 531, such that the guide 531 is disposed in the lower blanking template 11, while the pusher 533 can be moved out of the lower blanking template 11. If the pusher 533 deviates during its approach to the guide 531, causing the pusher 533 to collide with the lower blanking template 11, the elastic pusher 57 can also contract to provide a buffering effect, preventing rigid collision between the pusher 533 and the lower blanking template 11 that could damage the pusher 533 or the lower blanking template 11. That is, in this embodiment, the provision of the elastic pusher 57 can improve the safety of the stamping die 100 and reduce the risk of damage to the driving structure 53.

[0077] It should be noted that when stamping is performed using the stamping die 100 proposed in this embodiment, during the process of the drive structure 53 driving the brake pin 51 to move so that the brake pin 51 is inserted into the limiting groove 131 to limit the float 13, the elastic pusher 57 and the drive structure 53 move towards the elastic reset member 55 at the same time. If the pushing force of the elastic pusher 57 on the drive structure 53 is less than the pushing force of the elastic reset member 55 on the drive structure 53, the elastic pusher 57 will gradually contract to generate elastic force, thereby increasing the pushing force of the elastic pusher 57 on the drive structure 53, until the elastic pusher 57... The pushing force on the drive structure 53 is greater than that on the elastic reset member 55, which then pushes the drive structure 53 to slide, causing the brake pin 51 to slide into the limiting groove 131 to lock the float 13, and causing the elastic reset member 55 to contract and generate elastic force. If the driving force required for the elastic push member 57 to generate elastic compression is greater than the pushing force of the elastic reset member 55 on the drive structure 53, the elastic push member 57 will not be compressed but will directly push the drive structure 53 to slide, causing the brake pin 51 to be inserted into the limiting groove 131 to lock the float 13, and at the same time, it will also cause the elastic reset member 55 to contract and generate elastic force.

[0078] In some embodiments of this application, the moving mold 30, the elastic pusher 57, and at least a portion of the drive structure 53 are disposed on the same movable structure so as to move closer to or further away from the fixed mold 10 along with the movable structure;

[0079] During the process from the insertion of the brake pin 51 into the limiting groove 131 until the pressure plate 31 is disengaged from the fixed mold 10, the elastic pusher 57 is in a compressed state.

[0080] In this embodiment, the elastic pusher 57 and at least part of the drive structure 53 are all disposed on the same movable structure as the moving mold 30. The movable structure can be part of the stamping die 100 or disposed on the drive assembly of the stamping equipment used to drive the moving mold 30 and the buffer structure 50 to move. With this arrangement, the moving mold 30 and the drive structure 53 can move closer to the fixed mold 10 simultaneously with the movable structure under the drive of the stamping assembly. Then, the punch 33 is driven to stamp and stretch the product 210 and push the float 13 to move. The elastic pusher 57 and the drive structure 53 move to drive the brake pin 51 to slide into the limiting groove 131 to lock the float 13, and the elastic reset member 55 retracts. With this arrangement, the movement of the float 13 and the brake pin 51 is carried out simultaneously, without having to push the float 13 into place before driving the brake pin 51 to move. This shortens the operation time of the stamping and locking process of the float 13 and can improve production efficiency.

[0081] In addition, in this embodiment, during the stamping process using the stamping equipment with the stamping die 100, after the brake pin 51 is pushed into the limiting groove 131 to limit the float 13, the elastic pusher 57 is further compressed. With this configuration, after the product 210 is stretched, the movable structure moves away from the fixed die 10, causing the moving die 30 to disengage from the fixed die 10. During this process, since the elastic pusher 57 is in a compressed state, as the movable structure moves away from the fixed die 10, the elastic pusher 57 gradually returns to its original length and supports the drive structure 53, temporarily fixing the drive structure 53. This ensures that the brake pin 51 remains inserted in the limiting groove 131 until the moving die 30 disengages from the fixed die 10. After the moving mold 30 disengages from the fixed mold 10, the pushing force of the elastic pusher 57 on the drive structure 53 can be less than the pushing force of the elastic reset member 55 on the drive structure 53, causing the drive structure 53 to move away from the fixed mold 10 along with the moving structure, causing the brake pin 51 to exit the limit groove 131 and reset the float 13; that is, in this embodiment, the setting of the elastic pusher 57 can also delay the retraction of the drive structure 53 during the process of the moving structure driving the moving mold 30, the elastic pusher 57 and the drive structure 53 to retract and remove the material, so as to ensure that the float 13 is always locked before the pressure plate 31 disengages from the pressure lower template 11, and to prevent the float 13 from rebounding and damaging the product 210.

[0082] Please refer to Figures 1 to 3 In some embodiments of this application, the width of the limiting groove 131 in the direction of movement of the float 13 is greater than the width of the brake pin 51 in the direction of movement of the float 13. This arrangement ensures that the brake pin 51 can be inserted into the limiting groove 131.

[0083] This application also proposes a stamping apparatus, which includes a stamping die 100 as described in any of the preceding claims. The specific structure of the stamping die 100 is as described in any of the preceding embodiments and will not be repeated here.

[0084] Since the stamping equipment of this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.

[0085] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A stamping die, characterized in that, include: The fixed mold includes a lower pressure plate and a floating block. The material-carrying surface of the lower pressure plate is provided with a cavity groove. The floating block is disposed in the cavity groove and can slide along the depth direction of the cavity groove. The moving die includes a blank holder and a punch. The blank holder is disposed opposite to the material loading surface and can move toward and away from the material loading surface. The punch is movably disposed through the blank holder and is disposed toward the die cavity. as well as A buffer structure, at least a portion of which is located in the fixed mold and connected to the float after the punch is pressed, to fix the float before the pressure plate is separated from the material carrier; The side wall of the float has a limiting groove. The buffer structure includes a brake pin. The brake pin is movably disposed on the lower pressing template. The sliding direction of the brake pin is set at an angle to the sliding direction of the float. The brake pin is set towards the float and can move in and out of the limiting groove. The buffer structure further includes a drive structure and a reset component. The drive structure is pulsatorically connected to the brake pin. At least a portion of the drive structure is slidably disposed. The sliding direction of the drive structure is the same as the sliding direction of the moving mold. The drive structure is provided with a guide rail. One end of the brake pin is slidably disposed on the guide rail. When the drive structure slides, one end of the brake pin slides along the guide rail, so that the brake pin slides in the lower die of the pressing material to enter and exit the limiting groove. The reset member is an elastic reset member, which is located at one end of the drive structure adjacent to the brake pin and elastically abuts against the drive structure to drive the drive structure to reset and cause the brake pin to exit the limiting groove. The buffer structure includes an elastic pusher, which is located on the side of the drive structure opposite to the elastic reset member and abuts against the drive structure, and can move together with the drive structure toward the elastic reset member. During the process of the drive structure driving the brake pin to move until the pressure plate disengages from the fixed mold, the pushing force of the elastic pusher on the drive structure is greater than the pushing force of the elastic reset member on the drive structure.

2. The stamping die as described in claim 1, characterized in that, The driving structure includes: A guide member, disposed in the fixed mold and slidably disposed in the lower blank holder, the guide member having a guide rail extending away from the moving mold and the limiting groove; and A pusher, which is retractably inserted into the lower template of the pressure material, pushes the guide to slide and drives the brake pin to slide into the limiting groove.

3. The stamping die as described in claim 2, characterized in that, The guide member has a first strip-shaped hole, which extends away from the moving mold and the limiting groove to form the guide track; One end of the brake pin is provided with a limiting part, which is slidably disposed in the first strip hole.

4. The stamping die as described in claim 3, characterized in that, The lower template for pressing material has a second strip-shaped hole. The second strip-shaped hole extends along the direction in which the brake pin slides in and out of the limiting groove and is positioned opposite to the first strip-shaped hole. The limiting part passes through the first strip-shaped hole and the second strip-shaped hole and moves along the first strip-shaped hole and the second strip-shaped hole.

5. The stamping die as described in claim 1, characterized in that, The moving mold, the elastic pusher, and at least a portion of the driving structure are located on the same movable structure, so as to move closer to or further away from the fixed mold along with the movable structure; During the process from the insertion of the brake pin into the limiting groove until the pressure plate is disengaged from the fixed mold, the elastic pusher is in a compressed state.

6. The stamping die as described in any one of claims 1 to 5, characterized in that, In the direction of movement of the float, the width of the limiting groove is greater than the width of the brake pin.

7. A stamping device, characterized in that, The stamping equipment includes a stamping die as described in any one of claims 1 to 6.

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