Edge-lapping press die and apparatus

Abstract

The present application relates to the technical field of mould, and provides a stamping die and equipment for edge folding. The stamping die for edge folding comprises an upper die part and a lower die part. The upper die part comprises an upper die seat assembly, an upper die plate assembly, a contact piece and a female die. The upper die plate assembly is arranged at the bottom of the upper die seat assembly and is movably connected with the upper die seat assembly. The contact piece is arranged at the bottom of the upper die seat assembly. The female die is arranged at the bottom of the upper die plate assembly. The female die is slidably matched with the upper die plate assembly in the width direction of the upper die seat assembly. The female die pushes the workpiece to be processed to bend and form a flange during the downward movement of the upper die plate assembly. After the movable male die is lowered to a predetermined height, the contact piece pushes the female die to move close to the lower die plate assembly, so that the female die pushes the flange to flatten and form an edge folding. The flattening and edge folding of the metal plate can be completed by one stamping, which greatly shortens the production time and improves the production efficiency compared with the related art which adopts multiple processes to complete the edge folding.

Description

Technical Field

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

[0002] In related technologies, for narrow-edge folding parts, the folding mold first bends the edge at 90° or higher, then flattens or pushes it flat; for wide-edge folding parts, the folding mold first bends the edge at 90°, then bends it at an acute angle, and finally flattens or pushes it flat. However, regardless of whether it is a narrow-edge or wide-edge folding part, sheet metal folding requires two processes—flanging and folding—or three processes—flanging, slanting, and folding—to complete. This results in low production efficiency, and each process requires a mold, leading to high mold costs. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the related art. To this end, this invention proposes a stacking stamping die to solve the problems of low production efficiency and high cost in existing sheet metal stacking processes.

[0004] The present invention also proposes a stacking stamping device.

[0005] According to a first aspect of the present invention, a stacking stamping die includes: The upper mold device includes an upper mold component and a die, wherein the die is disposed at the bottom of the upper mold component and slides in cooperation with the upper mold component in the horizontal direction; The lower die device includes a lower die component and a movable punch. The lower die component is located below the upper die component, and the movable punch is disposed above the lower die component and slides in cooperation with the lower die component in the vertical direction. The upper die component is adapted to drive the die cavity and the movable punch to move downwards, and to drive the die cavity to move in the horizontal direction; the die cavity is adapted to push the workpiece to be processed to bend and form a flange, and after the movable punch descends to a predetermined height, to push the flange flat to form a stacked edge.

[0006] According to an embodiment of the present invention, the folding stamping die pushes the workpiece to bend and form a flange during the downward movement of the die component along with the upper die component, and then flattens the flange to form a folded edge after the movable punch descends to a predetermined height. This achieves the flattening and folding of the metal sheet in a single stamping operation, significantly shortening production time and improving production efficiency compared to related technologies that use multiple processes to complete the folding. Simultaneously, by reducing the decrease in die precision caused by multiple stamping operations, the flanged portion of the product will not open in reverse, preventing folding and thus improving product quality. Furthermore, completing all processes with a single die effectively reduces production costs.

[0007] According to one embodiment of the present invention, the upper mold component includes: Upper mold base assembly; An upper template assembly is disposed at the bottom of an upper mold base assembly and is movably connected to the upper mold base assembly; the upper mold base assembly is adapted to drive the upper template assembly to move downward and push the movable punch to move downward; the die is disposed at the bottom of the upper template assembly, and the die slides with the upper template assembly in the horizontal direction; A contact element is disposed on the upper template assembly; the contact element is adapted to push the die closer to the lower template assembly after the movable punch descends to a predetermined height, so that the die flattens the flange to form an overlap.

[0008] According to one embodiment of the present invention, the lower mold component includes: A lower mold base assembly, which is located below the upper mold plate assembly; The lower template assembly is disposed on the upper part of the lower mold base assembly, and the movable punch is disposed on at least one side of the lower template assembly and slides in cooperation with the lower mold base assembly in the vertical direction.

[0009] According to one embodiment of the present invention, the upper template component includes: The upper active template is movably connected to the upper mold base assembly; The upper movable pressure plate is located below the upper movable template; Multiple first elastic elements are disposed between the upper movable pressure plate and the upper movable template.

[0010] According to one embodiment of the present invention, the upper mold component further includes: A guide assembly is disposed on at least one side of the upper movable pressure plate and connected to the bottom of the upper movable template; the guide assembly includes a guide rail, which slides in cooperation with the corresponding die in the width direction of the upper mold base assembly.

[0011] According to one embodiment of the present invention, the guiding component further includes: The first limiting member is disposed at the bottom of the upper movable template. The first limiting member is located at the end of the guide rail away from the upper movable pressure plate. The first limiting member is provided with a mounting hole. A connecting rod is movably inserted into the mounting hole, and the first end of the connecting rod is connected to the die cavity; A first compression spring, the first end of which abuts against the side of the first limiting member away from the die, and the second end of which is connected to the second end of the connecting rod.

[0012] According to one embodiment of the present invention, the upper mold component includes two dies that extend along the length direction of the upper mold base assembly and are symmetrically arranged on both sides of the upper movable pressure plate.

[0013] According to one embodiment of the present invention, the upper part of the die facing the first limiting member is provided with a first guide slope that faces the first limiting member and is inclined downward, and the first guide slope is adapted to slide with the lower end of the contact member.

[0014] According to one embodiment of the present invention, the die has a protruding rib extending along the length direction of the upper die base assembly on the side facing the upper movable pressure plate. The upper part of the protruding rib has a stacking working surface, and the side of the protruding rib facing the upper movable pressure plate has a flanging working surface. The flanging working surface is adapted to push the workpiece to be processed to bend and form a flanging during the downward movement of the die along with the upper template assembly. The stacking working surface is adapted to flatten the flanging to form a stacked edge.

[0015] According to one embodiment of the present invention, the upper mold base assembly includes: The upper mold base body, wherein the upper template assembly and the contact element are both disposed at the bottom of the upper mold base body; A second elastic element is disposed at the bottom of the upper mold base body. The second elastic element is adapted to push the movable punch downward during the downward movement of the upper mold base body.

[0016] According to one embodiment of the present invention, the lower template component includes: A pad is disposed on the upper part of the lower mold base assembly; The lower template body is located on the upper part of the pad.

[0017] According to one embodiment of the present invention, the lower mold component includes two movable punches that extend along the length direction of the upper mold base assembly, and the two movable punches are symmetrically arranged on both sides of the pad.

[0018] According to one embodiment of the present invention, the lower mold component further includes: At least one elastic component, the upper end of which abuts against the bottom of the corresponding movable punch, and the lower end of which is connected to the lower die base assembly; the elastic component is adapted to generate an upward elastic force on the movable punch so that the top of the movable punch is flush with the top of the lower die base assembly.

[0019] According to one embodiment of the present invention, the lower mold base assembly includes: The lower mold base body is located below the upper mold template assembly, and the lower mold template assembly is disposed on the upper part of the lower mold base body; At least one guiding mechanism is provided on the side of the corresponding movable punch away from the pad, and slides in cooperation with the movable punch in the vertical direction.

[0020] According to a second aspect of the present invention, a stacking stamping apparatus includes a driving device and a stacking stamping die as described in any of the preceding claims, wherein the driving device is connected to the upper die base assembly.

[0021] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: According to an embodiment of the present invention, the folding stamping die pushes the workpiece to bend and form a flange during the downward movement of the die component along with the upper die component, and then flattens the flange to form a folded edge after the movable punch descends to a predetermined height. This achieves the flattening and folding of the metal sheet in a single stamping operation, significantly shortening production time and improving production efficiency compared to related technologies that use multiple processes to complete the folding. Simultaneously, by reducing the decrease in die precision caused by multiple stamping operations, the flanged portion of the product will not open in reverse, preventing folding and thus improving product quality. Furthermore, completing all processes with a single die effectively reduces production costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is one of the three-dimensional structural schematic diagrams of the stacked edge stamping die provided in the embodiments of the present invention; Figure 2 This is the second three-dimensional structural schematic diagram of the stacked edge stamping die provided in the embodiment of the present invention; Figure 3 This is an exploded structural diagram of the stacked edge stamping die provided in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the concave mold provided in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the movable punch provided in an embodiment of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of a stacked edge stamping die provided in another embodiment of the present invention; Figure 7 This is one of the schematic diagrams illustrating the working principle of the stacked edge stamping die provided in this embodiment of the invention; Figure 8This is the second schematic diagram of the working principle of the stacked edge stamping die provided in the embodiment of the present invention; Figure 9 This is the third schematic diagram illustrating the working principle of the stacked edge stamping die provided in this embodiment of the invention; Figure 10 This is the fourth schematic diagram illustrating the working principle of the stacked edge stamping die provided in this embodiment of the invention; Figure 11 yes Figure 10 A magnified schematic diagram of the partial structure at point A in the middle; Figure 12 This is the fifth schematic diagram illustrating the working principle of the stacked edge stamping die provided in this embodiment of the invention; Figure 13 yes Figure 12 A magnified schematic diagram of the structure at point B in the middle.

[0024] Reference numerals: 100, Upper mold component; 110, Upper mold base assembly; 111, Upper mold base body; 112, Second elastic element; 120, Upper template assembly; 121, Upper movable template; 122, Upper movable pressure plate; 124, Third elastic element; 125, Fourth elastic element; 127, Second limiting element; 130, Contact element; 131, Second guide slope; 140, Die cavity; 141, First guide slope; 142, Protrusion; 143, Flanging working surface; 144, Flanging working surface; 150, Guide... Components: 152, First limiting member; 153, Connecting rod; 154, First compression spring; 160, Fourth limiting member; 161, Fifth limiting member; 200, Lower mold component; 210, Lower mold base assembly; 211, Pad plate; 212, Lower template body; 213, Lower mold base body; 214, Guide mechanism; 215, Guide block; 216, Third limiting member; 220, Lower template assembly; 230, Movable punch; 240, Elastic component; 241, Fifth elastic component; 300, Workpiece to be processed. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0028] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] Figure 1 An example is shown in one of the three-dimensional structural schematic diagrams of the stacked edge stamping die provided in an embodiment of the present invention. Figure 2This is a second example of a three-dimensional structural schematic diagram of the stacking stamping die provided in an embodiment of the present invention. Figure 3 An exploded structural diagram of the stacked edge stamping die provided in an embodiment of the present invention is illustrated, as follows: Figures 1 to 3 As shown, the stacking stamping die includes an upper die assembly and a lower die assembly. The upper die assembly includes an upper die component and a die 140. The die 140 is disposed at the bottom of the upper die component and slides in cooperation with the upper die component in the horizontal direction. The lower die assembly includes a lower die component and a movable punch 230. The lower die component is located below the upper die component, and the movable punch 230 is disposed above the lower die component and slides in cooperation with the lower die component in the vertical direction. The upper die component is adapted to drive the die 140 and the movable punch 230 to move downwards and drive the die 140 to move horizontally. The die 140 is adapted to push the workpiece 300 to bend to form a flange, and after the movable punch 230 descends to a predetermined height, it pushes the flange flat to form a stacked edge.

[0031] According to an embodiment of the present invention, the folding stamping die pushes the workpiece to bend and form a flange during the downward movement of the die component along with the upper die component, and then flattens the flange to form a folded edge after the movable punch descends to a predetermined height. This achieves the flattening and folding of the metal sheet in a single stamping operation, significantly shortening production time and improving production efficiency compared to related technologies that use multiple processes to complete the folding. Simultaneously, by reducing the decrease in die precision caused by multiple stamping operations, the flanged portion of the product will not open in reverse, preventing folding and thus improving product quality. Furthermore, completing all processes with a single die effectively reduces production costs.

[0032] It is understood that the upper mold component includes an upper mold base assembly 110, an upper template assembly 120, and a contact member 130. The upper template assembly 120 is disposed at the bottom of the upper mold base assembly 110 and is movably connected to the upper mold base assembly 110. The upper template assembly 120 is movably connected to the upper mold base assembly 110, allowing the upper template assembly 120 to move relative to the upper mold base assembly 110 in the vertical direction. The upper mold base assembly 110 is adapted to drive the upper template assembly 120 downward and push the movable punch 230 downward. The die 140 is disposed at the bottom of the upper template assembly 120, and the die 140 slides with the upper template assembly 120 in the horizontal direction. The contact member 130 is disposed on the upper template assembly 120. The contact member 130 is adapted to push the die 140 closer to the lower template assembly 220 after the movable punch 230 descends to a predetermined height, so that the die 140 flattens the flange to form a stacked edge.

[0033] It should be noted that the contact element 130 is in active cooperation with the upper template assembly 120. The contact element 130 can be located inside the upper template assembly 120 or at the edge of the upper template assembly 120.

[0034] It should be noted that the workpiece 300 to be processed is a sheet metal part, and the width direction of the upper mold base assembly 110 refers to the direction along... Figure 1 The front and back directions in the middle, that is Figure 1 The direction indicated by X in the middle refers to the length direction of the upper mold base assembly 110 along... Figure 1 The left and right directions in the middle, that is Figure 1 The direction indicated by Y in the middle.

[0035] It is understood that the lower mold component includes a lower mold base assembly 210 and a lower template assembly 220, with the lower mold base assembly 210 located below the upper template assembly 120. The lower template assembly 220 is positioned above the lower mold base assembly 210, and the movable punch 230 is positioned on both sides of the lower template assembly 220. Of course, if only one side of the workpiece needs to be machined, the movable punch 230 can be simply positioned on one side of the lower template assembly 220. The movable punch 230 slides in conjunction with the lower mold base assembly 210 in the vertical direction, allowing the movable punch 230 to move vertically relative to the lower mold base assembly 210.

[0036] It is understandable that, such as Figures 1 to 3 As shown, the upper template assembly 120 includes an upper movable template 121, an upper movable pressure plate 122, and a plurality of first elastic elements (not shown). The upper movable template 121 is movably connected to the upper mold base assembly 110, and the upper movable pressure plate 122 is disposed below the upper movable template 121.

[0037] Specifically, both the upper movable template 121 and the upper movable pressure plate 122 are horizontally arranged, and both are rectangular plate structures. Of course, the shapes of the upper movable template 121 and the upper movable pressure plate 122 are not limited to this, and can also be regular polygons or other shapes. Preferably, the area of ​​the upper movable template 121 is larger than the area of ​​the upper movable pressure plate 122.

[0038] Furthermore, in order to ensure that the upper movable pressure plate 122 can fix the workpiece 300 before the die 140 contacts the workpiece 300, a certain distance is spaced between the upper movable template 121 and the upper movable pressure plate 122 to ensure that the bottom surface of the upper movable pressure plate 122 is at the same level as the bottom surface of the die 140 or the bottom surface of the upper movable pressure plate 122 is a certain height lower than the bottom surface of the die 140. When the flanging working surface 144 of the die 140 contacts the workpiece 300 or is about to contact the workpiece 300, the upper movable pressure plate 122 presses down on the workpiece 300, thereby fixing the workpiece 300 between the upper movable pressure plate 122 and the lower template assembly 220, that is, fixing the workpiece 300 between the lower surface of the upper movable pressure plate 122 and the upper surface of the lower template body 212, preventing the workpiece 300 from shifting during the stamping process, and improving the processing accuracy of the workpiece 300.

[0039] It is understandable that, such as Figures 1 to 3 As shown, multiple first elastic elements are disposed between the upper movable pressure plate 122 and the upper movable template 121. These first elastic elements are spaced apart, with their upper ends connected to the bottom surface of the upper movable template 121 and their lower ends connected to the top surface of the upper movable template 121. By distributing the first elastic elements between the upper movable pressure plate 122 and the upper movable template 121, before the upper movable template 121 descends to its lowest position, the upper movable pressure plate 122 contacts the workpiece 300, allowing pressure to be transmitted to the upper movable pressure plate 122. This fixes the workpiece 300 between the lower surface of the upper movable pressure plate 122 and the upper surface of the lower template body 212.

[0040] Specifically, the first elastic element is a nitrogen spring, and there are six first elastic elements. The upper movable template 121 is provided with six mounting holes, which are arranged in two rows along the width direction of the upper mold base assembly 110. Each row has three mounting holes spaced apart along the length direction of the upper mold base assembly 110, and the distance between two adjacent mounting holes in the same row is equal. The upper ends of the six first elastic elements are inserted into the six mounting holes one by one, and the upper ends of the six first elastic elements abut against the upper surface of the upper movable pressure plate 122.

[0041] During the downward movement of the upper template assembly 120, when the lower surface of the upper movable pressure plate 122 contacts the workpiece 300, the upper movable pressure plate 122 stops moving, the first elastic element is compressed, and the upper movable template 121 transmits pressure to the upper movable pressure plate 122 through the first elastic element, so that the workpiece 300 is fixed between the lower surface of the upper movable pressure plate 122 and the upper surface of the lower template body 212. As the upper movable template 121 continues to move downward, the distance between the upper movable pressure plate 122 and the upper movable template 121 becomes smaller and smaller, and the first elastic element is further compressed. When the upper movable template 121 descends to its lowest position, the upper movable pressure plate 122 abuts against the upper movable template 121, and the first elastic element is compressed to its minimum length.

[0042] It should be noted that the specific type of the first elastic element is not limited to a nitrogen spring; it can also be a compression spring or other elastic element. The specific number of the first elastic elements is not limited to six; it can also be eight, ten, or more.

[0043] It is understandable that, such as Figures 1 to 3As shown, the upper mold base assembly 110 includes an upper mold base body 111 and a second elastic member 112. The upper mold base body 111 has a rectangular plate-like structure, and its area is larger than that of the upper movable template 121. Of course, the shape of the upper mold base body 111 is not limited to this; it can also be a regular polygon or other shapes. The upper template assembly 120 and the contact member 130 are both located at the bottom of the upper mold base body 111. The upper mold base body 111 is connected to a driving device, which drives the upper mold base body 111 to move up and down, thereby causing the upper template assembly 120 and the contact member 130 to move up and down.

[0044] The second elastic element 112 is disposed at the bottom of the upper mold base body 111. The second elastic element 112 is adapted to push the movable punch 230 downward during the downward movement of the upper mold base body 111. Specifically, the second elastic element 112 is a nitrogen spring. Of course, the specific type of the second elastic element 112 is not limited to this, and it can also be a compression spring or other types of elastic elements.

[0045] Preferably, the upper movable template 121 is provided with a through hole, the upper end of the second elastic element 112 is connected to the bottom of the upper mold base body 111, the bottom of the upper mold base body 111 is provided with a mounting hole, the upper end of the second elastic element 112 is inserted into the mounting hole, and the lower end of the second elastic element 112 extends downward after passing through the through hole. In this embodiment, there are eight second elastic elements 112 and eight through holes. The eight second elastic elements 112 are arranged in two columns along the width direction of the upper mold base assembly 110, with four second elastic elements 112 in each column. The four second elastic elements 112 in the same column are arranged at intervals along the length direction of the upper mold base assembly 110, and the distance between two adjacent second elastic elements 112 in the same column is equal.

[0046] When the upper movable template 121 descends to the predetermined position, the lower end of the second elastic member 112 contacts the top of the movable punch 230. The second elastic member 112 pushes the movable punch 230 downward, so that a clearance space is formed between the movable punch 230 and the upper movable pressure plate 122, providing conditions for the protruding rib 142 to enter the clearance space for the edge stacking step.

[0047] Preferably, since the movable punch 230 is located below the die 140, the lower end of the second elastic member 112 needs to pass through the die 140 to contact the top of the movable punch 230. Since the die 140 needs to move in the horizontal direction, in order to avoid the second elastic member 112 from hindering the movement of the die 140, a plurality of waist-shaped through holes are provided on the die 140 at intervals. The waist-shaped through holes extend along the width direction of the upper mold base assembly 110, and the lower ends of the second elastic members 112 are correspondingly inserted into the waist-shaped through holes.

[0048] It should be noted that the predetermined position can be the position where the bottom surface of the upper movable template 121 contacts the guide mechanism 214, or the position where the upper movable template 121 is located when the flanging working surface 144 completes the flanging action.

[0049] It is also understandable that, such as Figures 1 to 3 As shown, multiple third elastic elements 124, which are compression springs, are provided between the upper movable template 121 and the upper mold base body 111. When the bottom surface of the first limiting member 152 contacts the top of the guide mechanism 214, the upper movable template 121 cannot continue to descend. At this time, the upper mold base body 111 continues to descend, and the third elastic elements 124 are compressed. The upper mold base body 111 transmits pressure to the upper movable template 121 through the third elastic elements 124.

[0050] It should be noted that the specific type of the third elastic element 124 is not limited to a compression spring, but can also be a nitrogen spring or other types of elastic elements.

[0051] It is also understandable that, such as Figures 1 to 3 As shown, the upper mold base assembly 110 also includes a plurality of fourth elastic elements 125, which are spaced apart around the outer periphery of the upper mold plate assembly 120. The upper end of the fourth elastic element 125 is connected to the bottom of the upper mold base body 111. Specifically, the fourth elastic element 125 is a nitrogen spring, and the upper mold base assembly 110 also includes four fourth elastic elements 125, which are disposed at the four corners of the bottom of the upper mold base body 111. When the upper mold base body 111 descends to its lowest position, the fourth elastic elements 125 are compressed, and the fourth elastic elements 125 support the upper mold base body 111, preventing the upper mold base body 111 from continuing to descend and causing the third elastic element 124 to be damaged due to excessive force, thus effectively extending the service life of the stacking stamping die.

[0052] It is also understood that the upper mold base assembly 110 further includes at least two second limiting members 127. The second limiting members 127 are cuboid in shape, and their upper ends are connected to the bottom of the upper mold base body 111. The upper movable template 121 is provided with at least two rectangular through holes, and the second limiting members 127 are movably inserted into the corresponding rectangular through holes. The lower end of the second limiting member 127 is provided with a limiting part. When the distance between the upper movable template 121 and the upper mold base body 111 reaches its maximum value, the bottom of the upper movable template 121 abuts against the limiting part.

[0053] Preferably, the upper mold base assembly 110 further includes two second limiting members 127, which are respectively disposed at the bottom of both ends of the upper mold base body 111. Both ends of the upper movable template 121 are provided with a rectangular through hole, and the second limiting members 127 can be moved up and down through the corresponding rectangular through holes.

[0054] It should be noted that before the upper movable pressure plate 122 contacts the workpiece 300, the third elastic element 124 is in a compressed state. At the same time, since the bottom of the upper movable template 121 abuts against the limiting part, the upper movable template 121 and the upper mold base body 111 will not separate.

[0055] Understandable Figure 4 A three-dimensional structural schematic diagram of the die provided in an embodiment of the present invention is illustrated, such as... Figures 2 to 4 As shown, the upper mold component 100 includes two dies 140, which extend along the length of the upper mold base assembly 110. The two dies 140 are symmetrically arranged on opposite sides of the upper movable pressure plate 122. Specifically, the dies 140 have a strip-shaped block structure, and the length, width, and height of the two dies 140 are equal. This allows the two dies 140 to be interchanged during assembly, which improves assembly efficiency and reduces production costs.

[0056] It is understandable that, such as Figure 4 As shown, the upper part of the die 140 facing the first limiting member 152 is provided with a first guide slope 141 that faces the first limiting member 152 and slopes downward. The first guide slope 141 is adapted to slide with the lower end of the contact member 130. Specifically, the die 140 has two first guide slopes 141 spaced apart along the length of the upper die base assembly 110. Two contact members 130 are provided on both sides of the bottom of the upper die base body 111. The positions of the two contact members 130 on the same side correspond one-to-one with the positions of the two first guide slopes 141. In this embodiment, the first guide slope 141 is a plane, and the inclination angle of the first guide slope 141 is determined based on experimental results.

[0057] When the bottom surface of the first limiting member 152 contacts the guide mechanism 214, the upper movable template 121 can no longer descend, and the upper mold base body 111 continues to drive the contact member 130 to descend, so that the lower end of the contact member 130 contacts the corresponding first guide slope 141. Since the first guide slope 141 is inclined downward, under the action of the first guide slope 141, the die 140 moves closer to the upward movable pressure plate 122. Specifically, as Figure 3 As shown, the left die 140 moves to the right under the push of the left contact 130, and the right die 140 moves to the left under the push of the right contact 130. The length of the first guide slope 141 is greater than the length of the contact 130 to reduce the installation accuracy requirements of the contact 130.

[0058] It should be noted that the number of first guide ramps 141 is not limited to two; three, four, or more can also be used, depending on the number of contact elements 130. The specific structural form of the first guide ramp 141 is not limited to a plane; it can also be a curved surface or other shapes.

[0059] It is understandable that, such as Figure 6 As shown, the contact 130 is cuboid, and its upper end is connected to the bottom of the upper mold base body 111. Preferably, the bottom of the upper mold base body 111 is provided with positioning grooves, the number of which is the same as the number of contact 130s. The upper ends of the contact 130s are correspondingly embedded in the positioning grooves, and the upper ends of the contact 130s are connected to the upper mold base body 111 by screws. The placement of the contact 130s in the positioning grooves serves two purposes: firstly, it facilitates the installation of the contact 130s. Due to the presence of the positioning grooves, installation only requires embedding the upper end of the contact 130 into the positioning groove, preventing the contact 130 from being damaged during use due to misalignment; secondly, embedding the upper end of the contact 130 into the positioning groove provides a fixing effect, improving the stability of the contact 130.

[0060] It is also understandable that, such as Figure 6 As shown, a second guide slope 131 is provided on the side of the lower end of the contact member 130 facing the die 140. The second guide slope 131 is adapted to slide with the first guide slope 141. The second guide slope 131 is a plane and is parallel to the first guide slope 141.

[0061] It should be noted that the structure in which the lower end of the contact element 130 mates with the first guide slope 141 is not limited to a slope, but can also be a spherical surface.

[0062] It is also understandable that, such as Figure 2 As shown, the upper mold component 100 also includes guide components 150. In this embodiment, the upper mold component 100 includes two guide components 150, although one guide component 150 can also be provided. The two guide components 150 are correspondingly disposed on both sides of the upper movable pressure plate 122 and connected to the bottom of the upper movable template 121. The guide component 150 includes a guide rail (not shown), which extends along the width direction of the upper mold base component 110. The guide rail and the corresponding die 140 slide in the width direction of the upper mold base component 110. By sliding in the guide rail and the die 140, the stability of the movement of the die 140 and the product quality are effectively improved.

[0063] Specifically, each guide assembly 150 includes three guide rails, which are spaced apart along the length of the upper mold base assembly 110. The guide rails are connected to the bottom of the upper movable template 121 by screws. The top of the die 140 is provided with three grooves, and the three guide rails are correspondingly engaged in the three grooves. Preferably, the cross-section of the guide rail is trapezoidal, and the width of the upper part of the groove cross-section is smaller than the width of the lower part of the groove cross-section, which ensures that the die 140 and the guide rail will not separate after the guide rail is engaged in the groove.

[0064] It should be noted that the number of guide rails is not limited to three; it can also be two, four, or more.

[0065] It is also understandable that, such as Figure 2 As shown, the guide assembly 150 also includes a first limiting member 152, a connecting rod 153, and a first compression spring 154. The first limiting member 152 is disposed at the bottom of the upper movable template 121. The first limiting member 152 is cuboid in shape and is connected to the bottom of the upper movable template 121 by screws. The first limiting member 152 is located at the end of the guide rail away from the upper movable pressure plate 122, and the first limiting member 152 is provided with mounting holes. The first limiting member 152 has the following two functions: Firstly, the first limiting member 152 can limit the die 140. When the die 140 on the right side moves to the rightmost end of the guide rail, the die 140 abuts against the first limiting member 152, thereby limiting the die 140. Secondly, when the upper movable template 121 descends to its lowest position, the bottom surface of the first limiting member 152 contacts the top surface of the first limiting member 152, supporting the upper movable template 121.

[0066] The connecting rod 153 is movably inserted into the mounting hole. The first end of the connecting rod 153 is connected to the die cavity 140, and the connecting rod 153 can move in the width direction of the upper die base assembly 110. The first end of the first compression spring 154 abuts against the side of the first limiting member 152 away from the die cavity 140, and the second end of the first compression spring 154 is connected to the second end of the connecting rod 153.

[0067] Specifically, the connecting rod 153 is a screw rod, extending along the width direction of the upper mold base assembly 110. The die 140 has a threaded hole on the side facing away from the upper movable pressure plate 122. The first end of the connecting rod 153 is threaded into the threaded hole of the movable pressure plate 122, enabling a detachable connection between the connecting rod 153 and the die 140, facilitating the assembly and disassembly of the stacking stamping die. The second end of the connecting rod 153 extends through the mounting hole to the side of the first limiting member 152 facing away from the die 140. A first compression spring 154 is sleeved on the second end of the connecting rod 153. The first end of the first compression spring 154 abuts against the side of the first limiting member 152 facing away from the die 140, and the second end of the first compression spring 154 abuts against the nut at the second end of the connecting rod 153.

[0068] Preferably, a washer is fitted onto the second end of the connecting rod 153, the outer diameter of which is larger than the outer diameter of the nut, and the second end of the first compression spring 154 abuts against the washer. By providing a washer at the second end of the connecting rod 153, the force-bearing surface of the second end of the first compression spring 154 is increased, thereby improving the stability of the first compression spring 154.

[0069] It is also understandable that, such as Figure 4 As shown, the side of the die 140 facing the upper movable pressure plate 122 is provided with a protruding rib 142 extending along the length direction of the upper mold base assembly 110. The protruding rib 142 and the die 140 are integrally formed. Of course, the protruding rib 142 and the die 140 can also be two parts. The protruding rib 142 and the die 140 can be connected by screws, or the side of the die 140 facing the upper movable pressure plate 122 is provided with a mounting groove, and the protruding rib 142 is partially embedded in the mounting groove. The upper part of the protruding rib 142 has a stacking working surface 143, which is a plane, horizontally arranged, and extends along the length direction of the upper mold base assembly 110. The side of the protruding rib 142 facing the upper movable pressure plate 122 has a flanged working surface 144, which is a plane, vertically arranged, and extends along the length direction of the upper mold base assembly 110. The flanging working surface 144 is connected to the stacking working surface 143, and the two are perpendicular to each other. The flanging working surface 144 is adapted to push the workpiece 300 to bend and form a flanging during the downward movement of the die 140 along with the upper template assembly 120, and the stacking working surface 143 is adapted to flatten the flanging and form a stacking.

[0070] It is also understandable that, such as Figures 1 to 3 As shown, the lower template assembly 220 includes a pad 211 and a lower template body 212. The pad 211 is disposed on the upper part of the lower mold base assembly 210. The pad 211 has a rectangular plate structure and is connected to the lower mold base body 213 by screws.

[0071] The lower template body 212 is disposed on the upper part of the pad 211, and the lower template body 212 is used to support the workpiece 300 to be processed. The lower template body 212 has a rectangular plate-shaped structure, and the width of the lower template body 212 is the same as the width of the pad 211. The width of both the lower template body 212 and the pad 211 is less than the thickness of the upper movable pressure plate 122. Preferably, the difference between the width of the upper movable pressure plate 122 and the width of the lower template body 212 is equal to the width of the movable part. By setting the pad 211 at the lower part of the lower template body 212, the thickness of the lower template body 212 is effectively reduced, the amount of material used to manufacture the lower template body 212 is reduced, and the production cost of the stacking stamping die is reduced.

[0072] Understandable Figure 5A three-dimensional structural schematic diagram of the movable punch provided in an embodiment of the present invention is illustrated, such as... Figure 3 and Figure 5 As shown, the lower mold component 200 includes two movable punches 230, which extend along the length of the upper mold base assembly 110. The two movable punches 230 are symmetrically arranged on both sides of the pad 211. Each movable punch 230 includes a punch body and a movable part. The punch body is horizontally positioned, and the movable part is vertically positioned. The movable part slides in contact with the side of the lower mold plate body 212 and the pad 211. The movable part is connected to the side of the punch body near the lower mold plate body 212. Preferably, the punch body and the movable part are integrally formed.

[0073] It is understandable that, such as Figure 2 As shown, the lower die component 200 also includes at least one elastic component 240. The number of elastic components 240 is the same as the number of movable punches 230, and the positions of the elastic components 240 correspond one-to-one with the positions of the movable punches 230. In this embodiment, the lower die component 200 also includes two elastic components 240. The upper ends of the two elastic components 240 abut against the bottoms of the two movable punches 230, and the lower ends of the two elastic components 240 are connected to the lower die base component 210. The elastic components 240 are adapted to generate an upward elastic force on the movable punches 230, so that the top of the movable punches 230 is flush with the top of the lower die plate component 220. During the process of the die 140 pushing the workpiece 300 to be processed for flanging, since the top of the movable punches 230 is flush with the top of the lower die plate component 220, the flanging can be at a 90° angle to the main body of the workpiece 300.

[0074] Specifically, each elastic component 240 includes multiple fifth elastic elements 241, which are nitrogen springs. The lower mold base body 213 has two sets of through holes along the width direction of the upper mold base assembly 110. The positions of the two sets of through holes correspond one-to-one with the positions of the movable punch 230. Each set includes multiple through holes, and the multiple through holes in the same set are arranged at intervals along the length direction of the upper mold base assembly 110. The upper end of the fifth elastic element 241 passes through the through hole and abuts against the bottom of the punch body. The lower end of the fifth elastic element 241 is connected to the lower mold base body 213. The fifth elastic element 241 is adapted to switch between a first state and a second state. In the first state, the top of the movable punch 230 is flush with the top of the lower template assembly 220. At this time, the fifth elastic element 241 can be in the initial state, uncompressed or slightly compressed. In the second state, the fifth elastic element 241 is further compressed, and a clearance space is formed between the movable part and the upper template assembly 120, providing conditions for the protruding edge 142 to enter the clearance space for the overlapping step.

[0075] It is understandable that, such as Figure 3As shown, the lower mold base assembly 210 includes a lower mold base body 213 and at least one guide mechanism 214. The lower mold base body 213 is located below the upper mold template assembly 120, and the lower mold template assembly 220 is disposed above the lower mold base body 213. The area of ​​the lower mold base body 213 is larger than the area of ​​the lower mold template body 212 and the pad 211. The lower mold base body 213 has a rectangular plate-like structure. Of course, the shape of the lower mold base body 213 is not limited to this and can also be other shapes.

[0076] The number of guide mechanisms 214 is the same as the number of movable punches 230, and the positions of the guide mechanisms 214 correspond one-to-one with the positions of the movable punches 230. In this embodiment, the lower mold base assembly 210 includes two guide mechanisms 214, which are correspondingly arranged on the side of the two movable punches 230 away from the pad 211, and slide in cooperation with the movable punches 230 in the vertical direction. By allowing the movable punches 230 to slide in cooperation with the guide mechanisms 214, the position of the movable punches 230 in the horizontal direction can be precisely controlled, effectively improving the product accuracy.

[0077] Specifically, the guiding mechanism 214 includes two guide blocks 215, which are spaced apart along the length of the upper mold base assembly 110. The guide blocks 215 are connected to the lower mold base body 213 by screws. Two guide grooves are spaced apart on the side of the punch body away from the lower mold plate body 212. The guide grooves extend in the vertical direction, and the positions of the two guide grooves correspond one-to-one with the positions of the two guide blocks 215. The guide blocks 215 are engaged in the corresponding guide grooves, thereby realizing the sliding cooperation between the guiding mechanism 214 and the movable punch 230 in the vertical direction.

[0078] Preferably, the guide mechanism 214 further includes two third limiting members 216. The third limiting members 216 are cuboids. The two third limiting members 216 are spaced apart along the length direction of the upper mold base assembly 110. The movable punch 230 is located between the two third limiting members 216. The end of the movable punch 230 slides with the third limiting members 216 in the vertical direction or is spaced a certain distance apart.

[0079] In another embodiment of the invention, such as Figure 6 As shown, the stacking stamping die also includes a limiting component, which includes a fourth limiting member 160. The fourth limiting member 160 has a rectangular block structure and is located at both ends of the bottom of the upper die base body 111. When the upper die base body 111 descends to the lowest position, the lower end of the fourth limiting member 160 abuts against the upper part of the lower die base body 213 to support the upper die base body 111 and prevent the upper die base body 111 from continuing to descend, which would cause the fourth elastic member 125 to be subjected to excessive pressure and thus be damaged.

[0080] In a preferred embodiment of the present invention, such as Figure 6As shown, the limiting component includes a fifth limiting member 161, which has a rectangular block structure. The fifth limiting member 161 is located at both ends of the upper part of the lower mold base body 213. The fifth limiting member 161 is located directly below the fourth limiting member 160. When the upper mold base body 111 descends to the lowest position, the lower end of the fourth limiting member 160 abuts against the upper part of the fifth limiting member 161 to support the upper mold base body 111.

[0081] Figure 7 One of the schematic diagrams illustrating the working principle of the overlapping stamping die provided in this embodiment of the invention is shown. Figure 8 This is the second example of a schematic diagram illustrating the working principle of the stacking stamping die provided in this embodiment of the invention. Figure 9 The third example illustrates the working principle of the stacking stamping die provided in this embodiment of the invention. Figure 10 The fourth example illustrates the working principle of the stacking stamping die provided in this embodiment of the invention. Figure 11 yes Figure 10 A magnified view of the structure at point A in the middle. Figure 12 The fifth example illustrates the working principle of the stacking stamping die provided in this embodiment of the invention. Figure 13 yes Figure 12 A magnified view of the local structure at point B, as shown below. Figures 7 to 13 As shown, the working principle of the stacked edge stamping die of the present invention is as follows: The driving device drives the upper mold base body 111 to move downwards. The upper mold base body 111 drives the upper template assembly 120 and the contact member 130 to move downwards. When the die 140 descends to the point where the bottom surface of the die 140 is flush with the bottom surface of the upper movable pressure plate 122, the flanging working surface 144 contacts the workpiece 300 to be processed. As the die 140 continues to descend, the flanging working surface 144 pushes the workpiece 300 to be processed to bend and form a flang. As the die 140 continues to descend, the second elastic member 1... The lower end of 12 contacts the top of the movable punch 230. The second elastic member 112 pushes the movable punch 230 downward, so that a clearance space is formed between the movable punch 230 and the upper movable pressure plate 122. The lower end of the contact member 130 contacts the corresponding first guide slope 141. The contact member 130 pushes the die 140 closer to the lower template assembly 220, and finally makes the protrusion 142 enter the clearance space. The overlapping edge working surface 143 is used to flatten the flange to form an overlapping edge.

[0082] According to an embodiment of the present invention, the stacking stamping die pushes the workpiece 300 to bend and form a flange by means of the die 140 moving downward along with the upper template assembly 120. After the movable punch 230 descends to a predetermined height, the contact member 130 pushes the die 140 closer to the lower template assembly 220, causing the die 140 to flatten the flange and form a stacked edge. This achieves the flattening and stacking of the metal sheet in a single stamping operation, significantly shortening production time and improving production efficiency compared to related technologies that use multiple processes. Simultaneously, by reducing the decrease in die precision caused by multiple stamping operations, the flanged portion of the product will not open in reverse, preventing stacking and improving product quality. Furthermore, completing all processes with a single die effectively reduces production costs.

[0083] A second aspect of the present invention also provides a stacking stamping apparatus, which includes a driving device and a stacking stamping die as described in any of the above embodiments, wherein the driving device is connected to the upper die base assembly 110.

[0084] By adopting the above-mentioned stacking stamping die, the production efficiency and product quality of the stacking stamping equipment are effectively improved, production costs are reduced, and product competitiveness is enhanced.

[0085] It should be noted that the driving device of the present invention is a punch press, which provides power for the movement of the upper die holder body 111. Of course, the specific type of driving device is not limited to this, and other power devices may also be used.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stacking stamping die, characterized in that, include: The upper mold device includes an upper mold component and a die (140), wherein the die (140) is disposed at the bottom of the upper mold component and slides in cooperation with the upper mold component in the horizontal direction; The lower die device includes a lower die component and a movable punch (230). The lower die component is located below the upper die component, and the movable punch (230) is disposed on the upper part of the lower die component and slides in cooperation with the lower die component in the vertical direction. The upper mold component is adapted to drive the die (140) and the movable punch (230) to move downward, and to drive the die (140) to move in the horizontal direction; the die (140) is adapted to push the workpiece (300) to bend to form a flange, and to push the flange flat to form a stacked edge after the movable punch (230) descends to a predetermined height; The lower mold component includes: Lower mold base assembly (210); A lower template assembly (220) is disposed on the upper part of the lower mold base assembly (210); The upper mold component includes: Upper mold base assembly (110); The upper mold plate assembly (120) is located below the lower mold base assembly (210). The upper mold plate assembly (120) is disposed at the bottom of the upper mold base assembly (110) and is movably connected to the upper mold base assembly (110). The upper mold base assembly (110) is adapted to drive the upper mold plate assembly (120) to move downward and push the movable punch (230) to move downward. The die (140) is disposed at the bottom of the upper mold plate assembly (120) and slides with the upper mold plate assembly (120) in the horizontal direction. Contact element (130), the contact element (130) is disposed on the upper template assembly (120); the contact element (130) is adapted to push the die (140) toward the lower template assembly (220) after the movable punch (230) descends to a predetermined height, so that the die (140) flattens the flange to form a stacked edge.

2. The stacking stamping die according to claim 1, characterized in that, The movable punch (230) is disposed on at least one side of the lower template assembly (220) and slides in cooperation with the lower mold base assembly (210) in the vertical direction.

3. The stacking stamping die according to claim 1, characterized in that, The upper template component (120) includes: The upper active template (121) is movably connected to the upper mold base assembly (110); The upper movable pressure plate (122) is located below the upper movable template (121); Multiple first elastic elements are disposed between the upper movable pressure plate (122) and the upper movable template (121).

4. The stacking stamping die according to claim 3, characterized in that, The upper mold component also includes: A guide assembly (150) is disposed on at least one side of the upper movable pressure plate (122) and connected to the bottom of the upper movable template (121); the guide assembly (150) includes a guide rail, which slides in cooperation with the corresponding die (140) in the width direction of the upper mold base assembly (110).

5. The stacking stamping die according to claim 4, characterized in that, The guide assembly (150) further includes: The first limiting member (152) is disposed at the bottom of the upper movable template (121). The first limiting member (152) is located at the end of the guide rail away from the upper movable pressure plate (122). The first limiting member (152) is provided with mounting holes. A connecting rod (153) is movably inserted into the mounting hole, and the first end of the connecting rod (153) is connected to the die (140); A first compression spring (154) has its first end abutting against the side of the first limiting member (152) away from the die (140), and its second end is connected to the second end of the connecting rod (153).

6. The stacking stamping die according to claim 5, characterized in that, The upper mold component includes two dies (140), which extend along the length of the upper mold base assembly (110) and are symmetrically arranged on both sides of the upper movable pressure plate (122).

7. The stacking stamping die according to claim 5 or 6, characterized in that, The upper part of the die (140) facing the first limiting member (152) is provided with a first guide slope (141) that faces the first limiting member (152) and is inclined downward. The first guide slope (141) is adapted to slide with the lower end of the contact member (130).

8. The stacking stamping die according to any one of claims 3 to 6, characterized in that, The die (140) is provided with a protruding rib (142) extending along the length direction of the upper mold base assembly (110) on the side facing the upper movable pressure plate (122). The upper part of the protruding rib (142) has a stacking working surface (143), and the side of the protruding rib (142) facing the upper movable pressure plate (122) has a flanging working surface (144). The flanging working surface (144) is adapted to push the workpiece (300) to bend and form a flanging during the downward movement of the die (140) along with the upper mold plate assembly (120). The stacking working surface (143) is adapted to flatten the flanging to form a stacking edge.

9. The stacking stamping die according to any one of claims 1 to 6, characterized in that, The upper mold base assembly (110) includes: The upper mold base body (111), the upper template assembly (120) and the contact element (130) are both disposed at the bottom of the upper mold base body (111); The second elastic element (112) is disposed at the bottom of the upper mold base body (111), and the second elastic element (112) is adapted to push the movable punch (230) downward during the downward movement of the upper mold base body (111).

10. The stacking stamping die according to any one of claims 1 to 6, characterized in that, The lower template component (220) includes: A pad (211) is disposed on the upper part of the lower mold base assembly (210); The lower template body (212) is located on the upper part of the pad (211).

11. The stacking stamping die according to claim 10, characterized in that, The lower mold component includes two movable punches (230), which extend along the length of the upper mold base assembly (110) and are symmetrically arranged on both sides of the pad (211).

12. The stacking stamping die according to claim 10, characterized in that, The lower mold component also includes: At least one elastic component (240) is provided, the upper end of which abuts against the bottom of the corresponding movable punch (230), and the lower end of which is connected to the lower die base assembly (210); the elastic component (240) is adapted to generate an upward elastic force on the movable punch (230) so that the top of the movable punch (230) is flush with the top of the lower die base assembly (220).

13. The stacking stamping die according to claim 10, characterized in that, The lower mold base assembly (210) includes: The lower mold base body (213) is located below the upper mold template assembly (120), and the lower mold template assembly (220) is disposed on the upper part of the lower mold base body (213); At least one guide mechanism (214) is provided on the side of the corresponding movable punch (230) away from the pad (211) and slides with the movable punch (230) in the vertical direction.

14. A stacking stamping device, characterized in that, It includes a drive device and a stacking stamping die according to any one of claims 1 to 13, wherein the drive device is connected to the upper die base assembly.

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