A stamping die and a stamping apparatus having the same

Abstract

The application discloses a stamping die, which comprises a frame, an upper die and a lower die, an upper pressing block and a lower pressing block arranged on the upper die and the lower die, the upper pressing block and the lower pressing block can slide along a first direction in a horizontal plane between an initial position and a terminal position, the upper pressing block and the lower pressing block are eccentrically arranged in the first direction relative to the upper die and the lower die when the upper pressing block and the lower pressing block are located at the initial position, and the lower pressing block is used for horizontally supporting a workpiece; two pushing blocks are arranged on the frame, the two pushing blocks can push and fold two side portions of the workpiece along the first direction when the two pushing blocks synchronously move towards each other, one of the two pushing blocks can push the upper pressing block and the lower pressing block along the first direction, and the two pushing blocks can press the two side portions of the workpiece on the upper pressing block when the two pushing blocks are located at the terminal position. The application further discloses a stamping device. The application can effectively prevent the two side portions of the workpiece from interfering during the turning process, and can improve the stamping efficiency and product quality.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment, and particularly to a stamping die and stamping equipment having the same. Background Technology

[0002] When processing sheet metal or plastic parts in the form of thin sheets, a stamping and folding process may be involved. In this process, a mold is needed to hold the upper and lower surfaces of the middle part of the workpiece, and the workpiece is folded from the left and right directions by a pusher.

[0003] Since the folded part of a thin sheet workpiece may rebound due to its own elastic restoring force after stamping and folding, the existing technology often requires the folded part of the workpiece to be folded at a negative angle, that is, folded at a larger angle on the basis of the original angle, so that the folded part of the workpiece can remain within the required angle range after rebounding.

[0004] Although existing stamping equipment can fold to form a negative angle, the two pushers can only move synchronously. For workpieces with a large folding angle and similar folding lengths, the two ends of the workpiece after folding are prone to interference, which affects the shape of the workpiece after folding and the product quality. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a stamping die capable of folding both sides of a workpiece sequentially, preventing interference between the two sides of the workpiece during the folding process.

[0006] The present invention also proposes a stamping device having the above-mentioned stamping die.

[0007] According to a first aspect of the present invention, a stamping die includes: a frame; an upper die and a lower die, both slidably disposed on the frame in a vertical direction; an upper pressure block and a lower pressure block, respectively disposed on the upper die and the lower die, wherein the upper pressure block and the lower pressure block can slide between an initial position and an end position in a first direction located in a horizontal plane; when the upper pressure block and the lower pressure block are located in the initial position, the upper pressure block and the lower pressure block are respectively eccentrically disposed relative to the upper die and the lower die in the first direction; the lower pressure block is used to horizontally support a workpiece; the upper pressure block can press down on the workpiece supported by the lower pressure block; the upper pressure block and the lower pressure block are eccentrically disposed in the vertical direction. The upper part is aligned; two push blocks are disposed on the frame and symmetrically disposed on both sides of the lower mold along the first direction. The two push blocks are configured to move synchronously towards each other or synchronously in opposite directions. When the two push blocks move synchronously towards each other, the two push blocks can push and fold the two sides of the workpiece along the first direction. After one of the push blocks presses one side of the workpiece onto the upper pressure block, the push block can push the upper pressure block and the lower pressure block along the first direction. When the push block pushes the upper pressure block and the lower pressure block to the termination position, the two push blocks respectively press the two sides of the workpiece onto the upper pressure block.

[0008] It has at least the following beneficial effects: During processing, the workpiece to be stamped is first placed horizontally on the lower pressure block; then the upper mold moves downward until the upper pressure block presses the workpiece between the upper and lower pressure blocks, at which point both the upper and lower pressure blocks are in their initial positions; then the two push blocks can move synchronously towards each other and fold the two sides of the workpiece in the first direction respectively. Since the upper and lower pressure blocks are in their initial positions and are eccentrically set relative to the upper and lower molds in the first direction respectively, the push block closer to the lower pressure block will first fold one side of the workpiece into place so that the side of the workpiece is pressed against the upper pressure block. Then, the push block closer to the lower pressure block will continue to move and push the upper and lower pressure blocks, so that the upper and lower pressure blocks move synchronously along the first direction until the other push block folds the other side of the workpiece into place and presses that side against the upper pressure block. The stamping die structure of this invention can achieve the sequential folding of two sides of the workpiece while the two push blocks approach synchronously. This ensures that the other side of the workpiece will only be folded after one side has been folded into place, effectively preventing interference between the two sides of the workpiece during the folding process, thereby improving stamping efficiency and product quality.

[0009] According to some embodiments of the present invention, a first compression spring extending in a vertical direction is installed between the lower mold and the frame, and a second compression spring extending in the first direction is provided between the upper pressure block and the upper mold, and between the lower pressure block and the lower mold.

[0010] According to some embodiments of the present invention, the end faces of the two push blocks near the lower pressure block are inclined from top to bottom away from the lower pressure block. When the lower pressure block is in the initial position, the inclination angle of the end face of the push block closer to the lower pressure block is smaller than the inclination angle of the end face of the other push block.

[0011] According to a second aspect of the present invention, a stamping apparatus includes a stamping die according to the first aspect of the present invention, and further includes: a base slidably disposed on a frame along a second direction, the second direction being located in a horizontal plane and perpendicular to a first direction, and a lower die slidably disposed on the base along a vertical direction; a material rack disposed on the frame and used to support a plurality of workpieces to be folded; and a feeding assembly disposed on the frame, the feeding assembly being configured to sequentially transfer the workpieces on the material rack to a lower pressing block on the lower die.

[0012] It has at least the following beneficial effects: The stamping equipment in this invention can realize automatic feeding and automatic stamping of workpieces. Specifically, several sheet-like workpieces to be folded can be stacked on the material rack. The unloading component can grab one workpiece at the upper end of the material rack each time and transfer the workpiece to the lower die on the base, so that the lower pressing block on the lower die can horizontally support the workpiece. The lower die supporting the workpiece can be moved between two push blocks under the drive of the base, and then the subsequent folding action is performed.

[0013] According to some embodiments of the present invention, the unloading assembly includes a first swing arm and a second swing arm. One end of the first swing arm is hinged to the frame and can swing in a vertical plane. The second swing arm is arranged perpendicularly to the first swing arm and is hinged to the other end of the first swing arm. The first swing arm is configured to drive the second swing arm to reciprocate between a position near the material rack and a position near the pressure block. The second swing arm is provided with a suction head for adsorbing the workpiece. The second swing arm can rotate relative to the first swing arm to direct the suction head toward the material rack or toward the pressure block.

[0014] According to some embodiments of the present invention, the feeding assembly further includes a third swing arm and a driving member. The driving member is disposed on the frame and connected to one end of the third swing arm. The driving member is used to drive the third swing arm to swing in a vertical plane. A sliding groove is provided in the middle of the first swing arm. The other end of the third swing arm is slidably disposed in the sliding groove and can roll relative to the sliding groove.

[0015] According to some embodiments of the present invention, one end of the second swing arm that is hinged to the first swing arm extends out of the second swing arm and is provided with a guide post. The guide post is perpendicular to the second swing arm. A rotating shaft is provided on the frame. The rotating shaft is arranged along the second direction and can rotate relative to the frame. A guide hole is provided on the rotating shaft, and the guide post slides through the guide hole.

[0016] According to some embodiments of the present invention, a quick-release assembly is provided between the upper mold and the frame. The quick-release assembly includes a limiting block and an inner sleeve coaxially arranged. The limiting block is slidably disposed on the frame in a vertical direction. The inner sleeve is sleeved on the lower part of the limiting block. The inner sleeve is provided with a deformable part and a supporting part from top to bottom. The deformable part has an initial state and a deformed state. When the deformable part is in the initial state, the top of the upper mold is located inside the inner sleeve and supported by the supporting part. The upper mold can slide relative to the inner sleeve in a vertical direction. The limiting block can abut against the top of the upper mold. When the deformable part is in the deformed state, the deformable part can bend outward and the supporting part can open outward to release the upper mold.

[0017] According to some embodiments of the present invention, the quick-release assembly further includes an outer sleeve, which is sleeved on the outside of the limiting block and is vertically adjustable relative to the limiting block. The lower part of the outer sleeve protrudes inward to provide a limiting portion. The wall thickness of the deformable portion is less than the wall thickness of the supporting portion, and the outer diameter of the deformable portion is less than the outer diameter of the supporting portion. When the deformable portion is in the initial state, the inner ring of the limiting portion can fit against the outer ring of the supporting portion.

[0018] According to some embodiments of the present invention, the inner sleeve has multiple partition seams distributed along its circumference, and the multiple partition seams divide the deformable portion and the supporting portion on the inner sleeve into multiple segments.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the stamping die in an embodiment of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the upper die of the stamping die in an embodiment of the present invention when the push block is not pressed down.

[0023] Figure 3 for Figure 2 A magnified schematic diagram of the local structure at point A;

[0024] Figure 4 This is a cross-sectional structural diagram of one of the push blocks in an embodiment of the present invention when one side of the workpiece is folded into place.

[0025] Figure 5 for Figure 4 A magnified view of the structure at point B in the middle;

[0026] Figure 6 This is a schematic cross-sectional view of the stamping die when it completes the workpiece flipping action in an embodiment of the present invention.

[0027] Figure 7 for Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0028] Figure 8 This is a schematic diagram of the stamping equipment in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure when the suction head on the feeding assembly corresponds to the material rack in an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the feeding assembly when the suction head and the pressure block correspond in an embodiment of the present invention;

[0031] Figure 11 This is a cross-sectional structural diagram of the quick-release component supporting the upper mold in an embodiment of the present invention;

[0032] Figure 12 This is a cross-sectional view of the quick-release component when releasing the upper mold in an embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the workpiece structure after folding in an embodiment of the present invention.

[0034] Icon labels:

[0035] 100 racks;

[0036] Stamping die 200, upper die 210, upper pressure block 211, column 212, lower die 220, lower pressure block 221, first compression spring 222, push block 230, pressure roller 240;

[0037] Workpiece 300, first folding arm 310, second folding arm 320;

[0038] Base 400;

[0039] Material rack 500;

[0040] The components include: feeding assembly 600, first swing arm 610, slide 611, second swing arm 620, suction head 621, guide post 622, third swing arm 630, rotating shaft 640, and guide hole 641.

[0041] Quick-release component 700, limiting block 710, inner sleeve 720, deformable part 721, supporting part 722, outer sleeve 730, limiting part 731. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, first direction, second direction, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this 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 limiting this invention.

[0044] In the description of this invention, the use of terms such as first, second, and third is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0045] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0046] Reference Figures 1 to 7 The present invention discloses a stamping die 200, including a frame 100, an upper die 210, a lower die 220, an upper pressure block 211, a lower pressure block 221, and two push blocks 230.

[0047] The upper mold 210 and lower mold 220 are both vertically slidably mounted on the frame 100. Upper pressure block 211 and lower pressure block 221 are respectively mounted on the upper mold 210 and lower mold 220. Both upper pressure block 211 and lower pressure block 221 can slide between an initial position and a final position along a first direction within the horizontal plane. When the upper pressure block 211 and lower pressure block 221 are in the initial position, they are eccentrically positioned relative to the upper mold 210 and lower mold 220 in the first direction. The lower pressure block 221 horizontally supports the workpiece 300, and the upper pressure block 211 can press down on the workpiece 300 supported by the lower pressure block 221. The upper pressure block 211 and lower pressure block 221 are aligned vertically. Two push blocks 230 are disposed on the frame 100 and symmetrically disposed on both sides of the lower mold 220 along the first direction. The two push blocks 230 are configured to move synchronously towards each other or synchronously in opposite directions. When the two push blocks 230 move synchronously towards each other, the two push blocks 230 can push and fold the two sides of the workpiece 300 along the first direction. When one of the push blocks 230 presses one side of the workpiece 300 onto the upper pressure block 211, the push block 230 can push the upper pressure block 211 and the lower pressure block 221 along the first direction. When the push block 230 pushes the upper pressure block 211 and the lower pressure block 221 to the termination position, the two push blocks 230 respectively press the two sides of the workpiece 300 onto the upper pressure block 211.

[0048] Understandably, during processing, the workpiece 300 to be stamped is first placed horizontally on the lower pressure block 221; then the upper die 210 moves downward until the upper pressure block 211 presses the workpiece between the upper pressure block 211 and the lower pressure block 221, at which point both the upper pressure block 211 and the lower pressure block 221 are in their initial positions; then the two push blocks 230 can move synchronously towards each other and fold the two sides of the workpiece 300 in the first direction respectively. Since the upper pressure block 211 and the lower pressure block 221 are in their initial positions and are eccentrically set relative to the upper die 210 and the lower die 220 in the first direction respectively, therefore, if Figure 4 As shown, the push block 230, which is closer to the lower pressure block 221, will first fold one side of the workpiece 300 into place, so that the side of the workpiece 300 is pressed tightly against the upper pressure block 211. Then, as... Figure 6As shown, the pusher block 230, which is closer to the lower pressure block 221, will continue to move and push the upper pressure block 211 and the lower pressure block 221, so that the upper pressure block 211 and the lower pressure block 221 move synchronously along the first direction until another pusher block 230 folds the other side of the workpiece 300 into place and presses the other side against the upper pressure block 211. The stamping die 200 structure of this invention, while the two pusher blocks 230 approach synchronously, can realize the sequential folding of the two sides of the workpiece 300. This ensures that the other side of the workpiece 300 will only be folded into place after one side has been folded into place, effectively preventing interference between the two sides of the workpiece 300 during the folding process, thereby improving stamping efficiency and product quality.

[0049] It should be noted that the two push blocks 230 can move closer to each other or further apart under the drive of two cylinders. Of course, in another embodiment of the present invention, both push blocks 230 are provided with inclined surfaces, the frame 100 is provided with a push cylinder, the piston rod of the push cylinder is connected to a push plate, and two pressure rollers 240 arranged along the first direction are hinged on the push plate. During the downward push of the push cylinder, the two pressure rollers 240 can gradually come into contact with and squeeze the inclined surfaces on the two push blocks 230, thereby realizing the synchronous approach of the two push blocks 230. When the push cylinder retracts, the two push blocks 230 can synchronously return to their original positions under the action of the return spring.

[0050] Furthermore, the eccentric arrangement of the upper pressure block 211 and the lower pressure block 221 means that the upper pressure block 211 is offset from the axis of the upper mold, which is perpendicular to the first direction and located in a vertical plane. Similarly, the lower pressure block 221 is offset from the axis of the lower mold, which is also perpendicular to the first direction and located in a vertical plane. The positions of the upper pressure block 211 and the lower pressure block 221 are always aligned vertically.

[0051] like Figure 3 As shown, in an embodiment of the present invention, a first compression spring 222 extending vertically is installed between the lower mold 220 and the frame 100, and a second compression spring extending in a first direction is provided between the upper pressure block 211 and the upper mold 210, and between the lower pressure block 221 and the lower mold 220. When the upper mold 210 moves down and presses down on the lower mold 220, the first compression spring 222 is compressed. When the upper mold 210 moves up and returns to its original position, the lower mold 220 can move up and return to its original position under the elastic restoring force of the first compression spring 222. By setting the first compression spring 222, when the workpiece 300 is initially placed on the lower pressure block 221, the workpiece 300 can be higher than the upper surface of the two push blocks 230, thereby facilitating the subsequent upward folding action of the push blocks 230 on the workpiece 300.

[0052] It is understood that the upper mold 210 can be set on the push plate in the aforementioned embodiment. When the push cylinder pushes the push plate down, the upper mold 210 and the pressure roller 240 on the push plate can move down synchronously, so that when the upper mold 210 presses down on the lower mold 220, the pressure roller 240 presses down on the inclined surface on the push block 230 simultaneously, so that the two push blocks 230 move closer to each other.

[0053] In embodiments of the present invention, such as Figure 3 As shown, the end faces of both push blocks 230 near the lower pressure block 221 are inclined from top to bottom away from the lower pressure block 221. When the lower pressure block 221 is in the initial position, the inclination angle of the end face of the push block 230 closer to the lower pressure block 221 is smaller than the inclination angle of the end face of the other push block 230. The inclined structure of the end faces of both push blocks 230 allows both sides of the folded workpiece 300 to form negative angles greater than 90 degrees, thus preventing the rebound of the workpiece 300's sides. Setting the inclination angle of one push block 230's end face to be greater than the inclination angle of the other push block 230 allows for... Figure 13 The second folding arm 320 of the workpiece 300 shown can be folded and fastened onto the first folding arm 310, which can further prevent interference between the first folding arm 310 and the second folding arm 320.

[0054] Reference Figures 8 to 13 The present invention also discloses a stamping device, including a stamping die 200 in the foregoing embodiments, and further including a base 400, a material rack 500 and a feeding assembly 600.

[0055] The base 400 is slidably mounted on the frame 100 along a second direction, which is located in a horizontal plane and perpendicular to the first direction. The lower mold 220 is slidably mounted on the base 400 along a vertical direction. The material rack 500 is mounted on the frame 100 and is used to support several workpieces 300 to be folded. The unloading assembly 600 is mounted on the frame 100 and is configured to transfer the workpieces 300 on the material rack 500 to the lower pressing block 221 on the lower mold 220 in sequence.

[0056] It is understandable that the above-mentioned stamping equipment can realize the automatic feeding and automatic stamping of workpiece 300. Specifically, several sheet-shaped workpieces 300 to be folded can be stacked on the material rack 500. The unloading component 600 can grab one workpiece 300 at the upper end of the material rack 500 each time and transfer the workpiece to the lower die 220 on the base 400, so that the lower pressing block 221 on the lower die 220 can horizontally support the workpiece 300. The lower die 220 supporting the workpiece 300 can move between the two push blocks 230 under the drive of the base 400, and then perform the subsequent folding action.

[0057] like Figure 9 and Figure 10 As shown, in this embodiment of the invention, the unloading assembly 600 includes a first swing arm 610 and a second swing arm 620. One end of the first swing arm 610 is hinged to the frame 100 and can swing in a vertical plane. The second swing arm 620 is arranged perpendicularly to the first swing arm 610 and is hinged to the other end of the first swing arm 610. The first swing arm 610 is configured to drive the second swing arm 620 to swing back and forth between a position near the material rack 500 and a position near the lower pressure block 221. The second swing arm 620 is provided with a suction head 621 for adsorbing the workpiece 300. The second swing arm 620 can rotate relative to the first swing arm 610 to direct the suction head 621 toward the material rack 500 or toward the lower pressure block 221. During the swinging process of the first swing arm 610, the second swing arm 620 can be driven to swing back and forth between the material rack 500 and the lower pressure block 221. When the second swing arm 620 is located close to the material rack 500, the suction head 621 on the second swing arm 620 rotates to the angle to suction the workpiece 300. When the second swing arm 620 is located close to the lower pressure block 221, the suction head 621 on the second swing arm 620 rotates to the angle facing the lower pressure block 221 and releases the workpiece 300. The above unloading assembly 600 structure can realize the automatic loading of the workpiece 300, which can improve processing efficiency. Furthermore, in this embodiment, both the first swing arm 610 and the second swing arm 620 can be rotated independently by a motor or other driving component.

[0058] In this embodiment of the invention, reference is made to Figure 9 and Figure 10 The unloading assembly 600 may further include a third swing arm 630 and a drive component. The drive component is mounted on the frame 100 and connected to one end of the third swing arm 630. The drive component is used to drive the third swing arm 630 to swing in a vertical plane. A groove 611 is provided in the middle of the first swing arm 610. The other end of the third swing arm 630 is slidably disposed in the groove 611 and can roll relative to the groove 611. By setting the third swing arm 630, the swinging action of the first swing arm 610 in a vertical plane can be realized, and the swing range of the first swing arm 610 can be limited.

[0059] like Figure 9 and Figure 10As shown, in this embodiment of the invention, the second swing arm 620, which is hinged to the first swing arm 610, extends out of the second swing arm 620 and is provided with a guide post 622. The guide post 622 is perpendicular to the second swing arm 620. A rotating shaft 640 is provided on the frame 100. The rotating shaft 640 is arranged along a second direction and can rotate relative to the frame 100. A guide hole 641 is provided on the rotating shaft 640, and the guide post 622 slides through the guide hole 641. Through the cooperation of the guide post 622 and the rotating shaft 640, the second swing arm 620 can automatically rotate its angle with the swing of the first swing arm 610 without the need for a separate driving component. This allows the suction head 621 on the second swing arm 620 to automatically face the material rack 500 when it is close to it, and automatically face the lower pressure block 221 when it is close to it.

[0060] Reference Figure 11 and Figure 12 In this embodiment of the invention, a quick-release assembly 700 may be provided between the upper mold 210 and the frame 100. The quick-release assembly 700 includes a limiting block 710 and an inner sleeve 720 coaxially arranged. The limiting block 710 is slidably disposed on the frame 100 in the vertical direction. The inner sleeve 720 is sleeved on the lower part of the limiting block 710. The inner sleeve 720 is provided with a deformable part 721 and a supporting part 722 from top to bottom. The deformable part 721 has an initial state and a deformed state. When the deformable part 721 is in the initial state, the top of the upper mold 210 is located inside the inner sleeve 720 and is supported by the supporting part 722. The upper mold 210 can slide relative to the inner sleeve 720 in the vertical direction. The limiting block 710 can abut against the top of the upper mold 210. When the deformable part 721 is in the deformed state, the deformable part 721 can bend outward and the supporting part 722 can open outward to release the upper mold 210. When the upper mold 210 is in the initial position, such as Figure 11 As shown, the upper mold 210 is supported by the supporting part 722 and will not detach from the quick-release assembly 700. As the upper mold 210 gradually moves downwards, it gradually abuts against the lower mold 220. After the lower mold 220 is in place, the quick-release assembly 700 continues to move downwards, causing the limiting block 710 to abut against the upper mold 210, thus achieving the clamping action of the upper mold 210 on the workpiece 300. After the stamping process is completed, the quick-release assembly 700 moves upwards, at which point the limiting block 710 no longer abuts against the upper mold 210. When it is necessary to replace the upper mold 210, the deformable part 721 can be forced from its initial state to... Figure 12The deformation state of the upper die 210 causes the supporting part 722 to open outward and release the upper die 210. The upper part of the new upper die 210 can be inserted into the inner sleeve 720 from bottom to top again. Finally, the deformed part 721 returns to its initial state so that the supporting part 722 can support the upper part of the new upper die 210 again. The above process can realize the quick disassembly and replacement of the upper die 210, which can save processing time. By replacing the upper die 210 with different specifications, the stamping equipment of the present invention can be compatible with the processing of workpieces of various sizes.

[0061] like Figure 11 and Figure 12 As shown, the quick-release assembly 700 in this embodiment of the invention also includes an outer sleeve 730. The outer sleeve 730 is sleeved on the outside of the limiting block 710 and its position relative to the limiting block 710 in the vertical direction is adjustable. The lower part of the outer sleeve 730 protrudes inward to provide a limiting part 731. The wall thickness of the deformable part 721 is less than the wall thickness of the supporting part 722, and the outer diameter of the deformable part 721 is less than the outer diameter of the supporting part 722. When the deformable part 721 is in the initial state, the inner ring of the limiting part 731 can fit against the outer ring of the supporting part 722. When the quick-release component 700 needs to support the upper mold 210, the outer sleeve 730 can be rotated to move the outer sleeve 730 downward and the inner ring fits against the outer ring of the support part 722. At this time, the support part 722 cannot be flipped outward, so the support part 722 will not release the upper mold 210. When the quick-release component 700 needs to release the upper mold 210, the outer sleeve 730 can be rotated in the opposite direction to move the outer sleeve 730 upward and the inner ring gradually separates from the support part 722. At this time, the support part 722 is no longer restricted by the outer sleeve 730. If the upper mold 210 is pulled downward, the support part 722 can be forced to flip outward and the deformable part 721 can be deformed, and then the upper mold 210 can be removed.

[0062] The inner sleeve 720 can be integrally molded from plastic or metal. Since the wall thickness of the deformable part 721 is less than that of the support part 722, the deformable part 721 is more easily deformed than the support part 722. Furthermore, the upper end face of the inner sleeve 720 can be fixedly connected to the limiting block 710 using fasteners such as bolts.

[0063] It should be noted that the upper mold 210 may be provided with vertically extending columns 212, which can be inserted into or detached from the support portion 722 during the assembly and disassembly of the upper mold 210. The outer diameter of the upper end of the column 212 may be larger than the outer diameter of the rest of the column 212, and the upper and lower end faces of the support portion 722 may be chamfered to facilitate the insertion and removal of the column 212. In addition, to prevent the upper mold 210 from rotating, the columns 212 on the upper mold 210 may be prismatic, and the area where the support portion 722 mates with the side of the column 212 may also be prismatic in shape, thereby preventing the upper mold 210 from rotating during the pressing process.

[0064] It is understandable that, since the column 212 on the upper mold 210 in the prior art is prone to wear and tear on the frame 100, the present invention designs the column 212 to be disassembled together with the upper mold 210, which facilitates the replacement of worn column 212.

[0065] In an embodiment of the present invention, the inner sleeve 720 has multiple partition slits distributed along its circumference, which divide the deformable portion 721 and the supporting portion 722 on the inner sleeve 720 into multiple segments. By providing partition slits, it is easy for the supporting portion 722 to be turned outward.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A stamping die, characterized in that, include: frame; Both the upper and lower molds are slidably mounted on the frame in a vertical direction; An upper pressure block and a lower pressure block are respectively disposed on the upper mold and the lower mold. Both the upper pressure block and the lower pressure block can slide between an initial position and an end position along a first direction located in the horizontal plane. When the upper pressure block and the lower pressure block are located at the initial position, the upper pressure block and the lower pressure block are respectively eccentrically disposed relative to the upper mold and the lower mold in the first direction. The lower pressure block is used to horizontally support the workpiece, and the upper pressure block can press down on the workpiece supported by the lower pressure block. The upper pressure block and the lower pressure block are aligned in the vertical direction. Two push blocks are disposed on the frame and symmetrically arranged on both sides of the lower mold along the first direction. The two push blocks are configured to move synchronously towards each other or synchronously in opposite directions. When the two push blocks move synchronously towards each other, they can push and fold the two sides of the workpiece along the first direction. After one of the push blocks presses one side of the workpiece onto the upper pressure block, the push block can push the upper pressure block and the lower pressure block along the first direction. When the push block pushes the upper pressure block and the lower pressure block to the termination position, the two push blocks press the two sides of the workpiece onto the upper pressure block respectively.

2. A stamping die according to claim 1, characterized in that, A first compression spring extending in the vertical direction is installed between the lower mold and the frame, and a second compression spring extending in the first direction is provided between the upper pressure block and the upper mold, and between the lower pressure block and the lower mold.

3. A stamping die according to claim 1, characterized in that, The end faces of both push blocks near the pressure block are inclined from top to bottom away from the pressure block. When the pressure block is in the initial position, the inclination angle of the end face of the push block closer to the pressure block is smaller than the inclination angle of the end face of the other push block.

4. A stamping device, characterized in that, The stamping die includes, as described in any one of claims 1 to 3, and further includes: The base is slidably mounted on the frame along a second direction, which is located in a horizontal plane and perpendicular to the first direction. The lower mold is slidably mounted on the base along a vertical direction. A material rack is set on the frame and is used to support several workpieces to be folded; A feeding assembly is disposed on the frame and is configured to sequentially transfer the workpieces on the rack to the lower pressure block on the lower mold.

5. A stamping device according to claim 4, characterized in that, The unloading assembly includes a first swing arm and a second swing arm. One end of the first swing arm is hinged to the frame and can swing in a vertical plane. The second swing arm is arranged perpendicularly to the first swing arm and is hinged to the other end of the first swing arm. The first swing arm is configured to drive the second swing arm to reciprocate between a position near the material rack and a position near the pressure block. The second swing arm is provided with a suction head for adsorbing the workpiece. The second swing arm can rotate relative to the first swing arm to direct the suction head toward the material rack or toward the pressure block.

6. A stamping device according to claim 5, characterized in that, The feeding assembly also includes a third swing arm and a drive component. The drive component is mounted on the frame and connected to one end of the third swing arm. The drive component is used to drive the third swing arm to swing in a vertical plane. A groove is provided in the middle of the first swing arm. The other end of the third swing arm is slidably disposed in the groove and can roll relative to the groove.

7. A stamping device according to claim 6, characterized in that, The second swing arm extends from one end that is hinged to the first swing arm and is provided with a guide post. The guide post is perpendicular to the second swing arm. A rotating shaft is provided on the frame. The rotating shaft is arranged along the second direction and can rotate relative to the frame. A guide hole is provided on the rotating shaft, and the guide post slides through the guide hole.

8. A stamping device according to claim 4, characterized in that, A quick-release assembly is provided between the upper mold and the frame. The quick-release assembly includes a limiting block and an inner sleeve coaxially arranged. The limiting block is slidably disposed on the frame in the vertical direction. The inner sleeve is sleeved on the lower part of the limiting block. The inner sleeve is provided with a deformable part and a supporting part from top to bottom. The deformable part has an initial state and a deformed state. When the deformable part is in the initial state, the top of the upper mold is located inside the inner sleeve and supported by the supporting part. The upper mold can slide relative to the inner sleeve in the vertical direction. The limiting block can abut against the top of the upper mold. When the deformable part is in the deformed state, the deformable part can bend outward and the supporting part can open outward to release the upper mold.

9. A stamping device according to claim 8, characterized in that, The quick-release assembly also includes an outer sleeve, which is sleeved on the outside of the limiting block and is vertically adjustable relative to the limiting block. The lower part of the outer sleeve protrudes inward to provide a limiting part. The wall thickness of the deformable part is less than the wall thickness of the supporting part, and the outer diameter of the deformable part is less than the outer diameter of the supporting part. When the deformable part is in the initial state, the inner ring of the limiting part can fit against the outer ring of the supporting part.

10. A stamping device according to claim 9, characterized in that, The inner sleeve has multiple partition seams distributed along its circumference, which divide the deformable part and the supporting part on the inner sleeve into multiple segments.

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