A continuous production device for ring-shaped stamped parts

Abstract

The utility model discloses a kind of annular stamping part continuous production device, including continuous stamping die, multiple stations and half-cut station and back pressure station are set in continuous stamping die, half-cut station is used to cut off the forming intermediate body portion in metal coiled material, back pressure station is used to make forming intermediate body reverse pressure back metal coiled material, so that forming intermediate body can be conveyed to subsequent station with metal coiled material, realize the continuous production of still can feed after cutting, finally get annular automobile accessory by forming station processing. Through the technical scheme, the continuous stamping of annular stamping part multi-process can be realized, which greatly improves its production efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts stamping production technology, specifically to a production device for continuous stamping of metal coils into circular automotive parts. Background Technology

[0002] In automotive parts manufacturing, circular metal parts (such as sealing rings and support rings) are widely used. These parts are typically formed by stamping sheet metal and require high dimensional accuracy and production efficiency. Currently, mass production of these parts largely relies on progressive die stamping processes, utilizing strip material transfer and multi-station continuous processing to achieve one-time forming, thereby improving production efficiency and reducing costs.

[0003] However, for internal and external forming parts that require flanging, the conventional continuous stamping die production method has obvious drawbacks: since the final forming of the part requires flanging, the traditional edge-connecting method cannot be used to transfer the material strip. If the connecting structure is retained, it will interfere with the flanging forming process, resulting in the part's dimensional accuracy exceeding the standard. If the material strip is cut directly, the material strip transfer function will be lost, and multi-station continuous processing cannot be achieved. Only single-process step-by-step production can be adopted, which not only results in low production efficiency but also causes part accuracy errors due to multiple positioning. At the same time, it increases equipment investment and labor costs, making it difficult to meet the needs of mass production.

[0004] In summary, existing continuous stamping die production equipment cannot resolve the contradiction between "continuous material transfer and forming process" in the internal and external forming of flanged parts, resulting in problems such as low production efficiency, high cost, and difficulty in guaranteeing precision. There is an urgent need for a continuous production equipment that can still transfer the material strip after cutting, in order to break through the technical bottleneck. Utility Model Content

[0005] In view of the above problems, this application provides a continuous production apparatus for ring-shaped stamped parts to solve the technical problem of low production efficiency of ring-shaped stamped parts.

[0006] To achieve the above objectives, this application provides a continuous production apparatus for ring-shaped stamped parts, comprising:

[0007] The servo feeder is connected to the coil feeding mechanism and is used to intermittently feed the metal coil to the continuous stamping die at a preset step distance. The servo feeder drives the metal coil to feed one step each time the stamping press completes one stamping cycle.

[0008] A continuous stamping die is installed on a stamping equipment. The continuous stamping die has multiple processing stations arranged at equal intervals. The metal coil is gradually driven along a preset path in the continuous stamping die. Each step of the drive is stamped once by the stamping equipment to complete the corresponding processing procedure.

[0009] The continuous stamping die is equipped with a half-cutting station and a back-pressing station. The half-cutting station is used to cut off the forming intermediate part in the metal coil, and the back-pressing station is used to press the forming intermediate part back into the metal coil, so that the forming intermediate part can be transported with the metal coil to the subsequent processing station, realizing continuous production that can still be fed after cutting. Finally, the circular automotive parts are processed by the forming station.

[0010] Furthermore, the semi-cutting station includes a semi-cutting die edge adapted to the thickness of the metal coil. The semi-cutting die edge is arranged along the outer periphery of the forming intermediate and the depth of the edge is less than the overall thickness of the metal coil. It can only partially cut off the connection area between the forming intermediate and the metal coil, while retaining the basic connection section of the metal coil edge to maintain the transfer function of the metal coil.

[0011] Furthermore, the back-pressing station includes a pressing structure adapted to the contour of the cut end of the half-cut metal coil. The pressing structure is provided with an arc-shaped pressing head. The arc of the arc-shaped pressing head matches the deformation contour of the cut end of the metal coil. Through reverse stamping pressure, the forming intermediate is cut and pressed into the hole of the metal coil.

[0012] Furthermore, the processing stations of the continuous stamping die are sequentially set along the material belt transmission direction as follows: punching guide hole station, pre-forming station, punching inner hole station, 45° pre-flanging station, secondary forming station, half-cutting station, back pressing station, flanging station and part ejection station.

[0013] Furthermore, the feeding step distance of the servo feeder can be adjusted by setting parameters, with a step distance error of no more than ±0.02mm, which is suitable for the processing spacing of each station of the continuous stamping die.

[0014] Furthermore, the metal coil is a special metal sheet for automotive parts, which is formed into a ring structure with uniform inner and outer diameters after being processed by a continuous stamping die.

[0015] Furthermore, the 45° pre-flanging station is used to perform 45° pre-flanging on the edge of the part to ensure the processing accuracy of the subsequent flanging station.

[0016] Furthermore, the upper and lower dies of the continuous stamping die are equipped with matching stamping structures for each processing station to ensure the consistency of processing in each process.

[0017] Unlike existing technologies that only allow for single-stage, step-by-step production of annular stamped parts, this technical solution features a continuous production device for annular stamped parts. This device incorporates multiple stations within the continuous stamping die, including a half-cutting station and a retraction station. The half-cutting station cuts off the intermediate formed portion of the metal coil, while the retraction station pushes the intermediate formed portion back onto the metal coil, allowing it to be conveyed along with the coil to subsequent stations. This enables continuous production with continued feeding even after cutting, ultimately resulting in annular automotive parts after processing at the forming station. This technical solution allows for multi-stage continuous stamping of annular parts, significantly improving production efficiency and accuracy.

[0018] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0019] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0020] In the accompanying drawings of the instruction manual:

[0021] Figure 1 This is a top view of the continuous stamping process of the metal coil (i.e., strip) described in the specific embodiment;

[0022] Figure 2 for Figure 1 Corresponding side view;

[0023] Figure 3 This is a schematic diagram of the continuous stamping die described in a specific embodiment;

[0024] Figure 4 This is a schematic diagram of the upper die of the continuous stamping die described in the specific embodiment;

[0025] Figure 5 This is a schematic diagram of the lower die of the continuous stamping die described in the specific embodiment;

[0026] The reference numerals used in the above figures are explained as follows:

[0027] 1. Metal coil; 11. Guide hole; 21. Forming 1; 22. Inner hole; 23. 45° flange; 24. Forming 2; 25. Half-cut intermediate body; 26. Back pressure body; 27. Flanged forming body; 28. Finished product;

[0028] 30. Continuous stamping die; 31. Upper die; 32. Lower die; 311. Positioning pin; 312. Machining station;

[0029] 3120, Half-cutting station; 3121, Back-pressing station; 3122, Flanging station; 3123, Part output station. Detailed Implementation

[0030] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0031] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0032] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0033] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0034] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0035] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0036] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0037] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0039] Please see Figures 1 to 5This embodiment provides a continuous production apparatus for annular stamped parts. This apparatus is used to produce annular automotive metal parts such as retaining rings. It continuously stamps metal coils (hereinafter referred to as strips) to form annular automotive metal parts. The final forming of these annular automotive metal parts requires external flanging, which cannot be achieved using the traditional edge-connecting method—retaining the connecting structure would interfere with the flanging process, leading to substandard part dimensional accuracy. This embodiment uses a continuous stamping die for continuous stamping, with multiple processing stations within the die. The last station is for external flanging, and the station before the flanging is a back-pressing station. The back-pressing station completely cuts off the workpiece and metal coil and presses it back into the strip, allowing it to be transferred to the flanging station for processing. This achieves continuous transfer processing and ensures the accuracy of the flanging formation.

[0040] This continuous production apparatus for ring-shaped stamped parts includes a servo feeder, a continuous stamping die 30, and stamping equipment. The servo feeder and stamping equipment are conventional equipment in the art, and this embodiment does not modify them. The various parts of the continuous production apparatus for ring-shaped stamped parts cooperate to achieve continuous production.

[0041] The rotatable feeder for the metal coil to be processed is mounted on the coil feeding mechanism. The coil feeding mechanism uses a coil support to fix the metal coil (selected as 1.2mm thick automotive-grade cold-rolled steel sheet). Guide rollers smoothly convey the coil to the servo feeder. The servo feeder is sequentially connected to the coil feeding mechanism and the continuous stamping die. The feeding step distance (e.g., 250mm) is set via a programmable controller. After the stamping press completes one stamping cycle, the servo feeder precisely drives the material strip to feed one step, with the step distance error controlled within ±0.02mm. Figure 1 and Figure 2 The figures shown are a top view and a side view of the continuous stamping process of the metal coil (i.e., strip).

[0042] Continuous stamping dies are installed on the worktable of a punch press of a certain tonnage (e.g., 160 tons), such as... Figure 3 As shown, the continuous stamping die includes an upper die 31 and a lower die 32, as follows: Figure 4 and Figure 5As shown, the upper die is provided with multiple positioning pins 311, and the lower die is provided with positioning holes adapted to the positioning pins 311, allowing the upper and lower dies to move relative to each other along the positioning holes and positioning pins. The continuous stamping die has multiple equal-pitch processing stations 312 corresponding to the upper and lower dies, which are sequentially arranged along the material conveying direction as follows: guide hole punching station, pre-forming station, inner hole punching station, 45° pre-flanging station, secondary forming station, half-cutting station 3120, back-pressing station 3121, flanging station 3122, and part ejection station 3123. The continuous stamping die has matching stamping structures for each processing station corresponding to the upper and lower dies, ensuring the consistency of processing in each process. With each stamping operation of the continuous stamping die, the metal coil moves forward one step. For example... Figure 1 and Figure 2 As shown, the punching guide hole station is used to punch guide holes 11 on both sides of the strip; the pre-forming station punches out forming 21 on the strip; the punching inner hole station is used to punch out inner holes 22 based on forming 1; the 45° pre-flanging station is used to punch out 45° flanging 23 on the inner side of the inner hole; the secondary forming station is used to punch out forming 24; the half-cutting station 3120 is used to cut off part of the forming intermediate (i.e., the outside of the inner hole) to form a half-cut intermediate 25; the back pressing station 3121 is used to press the half-cut intermediate 25 in the reverse direction (i.e., opposite to the half-cutting direction) to press part of it back into the metal coil to form a back pressing body 26; the flanging station is used to perform outer flanging to form a flanged forming body 27; the ejection station is used to punch the flanged forming body 27 out of the metal coil to form the finished product 28.

[0043] In this embodiment, the semi-cutting station 3120 and the back-pressing station 3121 are the core innovative structures. The semi-cutting station 3120 is used to cut off the forming intermediate part in the metal coil, and the back-pressing station 3121 is used to press the forming intermediate back into the metal coil, so that the forming intermediate can be transported to the subsequent station with the metal coil, realizing continuous production that can still be fed after cutting. Finally, the ring-shaped automotive parts are processed by the forming station.

[0044] The semi-cutting station 3120 includes a semi-cutting die edge adapted to the thickness of the metal coil. The cutting edge is arranged along the outer periphery of the forming intermediate, and its depth is less than the overall thickness of the metal coil. It can only partially cut the connection area between the forming intermediate and the metal coil, preserving the basic connecting section at the edge of the metal coil to maintain its transfer function. For example, the cutting edge depth of the semi-cutting station die is set to 1.0 mm (for a strip thickness of 1.2 mm) to achieve partial cutting. The back-pressing station is equipped with an arc-shaped pressing head adapted to the shape of the strip at the cut point.

[0045] like Figure 4 and Figure 5As shown, the back-pressing station includes a pressing structure adapted to the contour of the cut section of the semi-cut metal coil. The pressing structure is equipped with an arc-shaped pressing head, the curvature of which matches the deformation contour of the cut section of the metal coil. Through reverse stamping pressure, the formed intermediate body is cut and pressed against the metal coil, repositioning itself within the hole of the metal coil. Figure 2 As shown, the back pressure body 26 presses back a certain distance (in this embodiment, the distance corresponding to the thickness of a strip) relative to the half-cut intermediate body 25, so that the forming intermediate body is still confined within the hole of the metal coil.

[0046] The working process of this continuous production device for ring-shaped stamped parts is as follows:

[0047] Before starting the equipment, the feeding step distance is set to 250mm via the servo feeder to ensure that the feed distance of the strip is consistent with the spacing between each station of the continuous stamping die. The coil feeding mechanism releases the metal coil, which is then conveyed to the initial station (guide hole punching station) of the continuous stamping die via the servo feeder. The punch press performs its first punch, and the guide hole punching station punches positioning holes in the strip, ensuring accurate positioning for subsequent stations. After the punch press completes one punch, the servo feeder drives the strip to feed one step, and the strip enters the pre-forming station, where the stamping equipment punches to pre-form the part's basic shape. The strip continues to feed at the step distance, passing sequentially through the inner hole punching station (punching the inner hole of the part), the 45° pre-flanging station (performing a 45° pre-flanging of the part's edge to ensure subsequent flanging accuracy), and the secondary forming station (optimizing the part's basic structure and improving forming stability). The strip is fed to the half-cutting station, where the stamping equipment punches it. The die edge at the half-cutting station partially severs the part from the strip (leaving a 0.2mm connecting portion at the strip edge), preventing the connecting structure from interfering with subsequent flanging while not completely severing the strip's transfer function. The strip continues to be fed to the return pressing station, where the stamping equipment punches it again. The arc-shaped pressing head at the return pressing station reverses the edge of the half-cut strip, cutting and pressing the formed intermediate part into the hole of the metal coil, ensuring balanced force and no jamming during subsequent feeding. The returned strip is fed to the flanging station, where the stamping equipment flanging the part to achieve its final shape, resulting in a circular automotive part that meets dimensional requirements. Finally, the strip is fed to the part exit station, where the stamping equipment completely separates the formed circular part from the strip. The part falls into the collection device, completing one continuous production cycle. Subsequent strips continue to be fed in increments, repeating the above processes to achieve continuous batch production.

[0048] This embodiment effectively solves the technical challenge of continuous production of internally and externally formed parts with flanges through its core innovative "half-cut + back pressure" structure: the half-cut station partially cuts the part from the strip, avoiding interference with the flange forming; the back pressure station presses the cut end back together, ensuring continuous strip transmission capability, allowing the strip to carry the part prototype through multiple stations sequentially, eliminating the need for step-by-step production. The multi-station integrated design of the continuous stamping die, combined with the precise step distance control of the servo feeder, enables the completion of all processes such as punching guide holes, forming, punching inner holes, and flanges in one operation, significantly improving production efficiency compared to traditional single-process production. Furthermore, the use of a universal continuous stamping die structure eliminates the need for additional specialized equipment, reducing equipment investment costs, minimizing manual intervention, avoiding accuracy errors caused by multiple positioning steps, and resulting in smaller part dimensional tolerances.

[0049] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A continuous production apparatus for ring-shaped stamped parts, characterized in that, include: The servo feeder is connected to the coil feeding mechanism and is used to intermittently feed the metal coil to the continuous stamping die at a preset step distance. The servo feeder drives the metal coil to feed one step each time the stamping press completes one stamping cycle. A continuous stamping die is installed on a stamping equipment. The continuous stamping die has multiple processing stations arranged at equal intervals. The metal coil is gradually driven along a preset path in the continuous stamping die. Each step of the drive is stamped once by the stamping equipment to complete the corresponding processing procedure. The continuous stamping die is equipped with a half-cutting station and a back-pressing station. The half-cutting station is used to cut off the forming intermediate part in the metal coil, and the back-pressing station is used to press the forming intermediate back into the metal coil, so that the forming intermediate can be transported with the metal coil to the subsequent processing station, realizing continuous production that can still be fed after cutting. Finally, the circular automotive parts are processed by the forming station.

2. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The semi-cutting station includes a semi-cutting die edge adapted to the thickness of the metal coil. The semi-cutting die edge is arranged along the outer periphery of the forming intermediate. The depth of the cutting edge is less than the overall thickness of the metal coil. It can only partially cut off the connection area between the forming intermediate and the metal coil, while retaining the basic connection section of the metal coil edge to maintain the transfer function of the metal coil.

3. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The back-pressing station includes a pressing structure adapted to the contour of the cut section of the half-cut metal coil. The pressing structure is provided with an arc-shaped pressing head. The arc of the arc-shaped pressing head matches the deformation contour of the cut section of the metal coil. Through reverse stamping pressure, the forming intermediate is cut and pressed into the hole of the metal coil.

4. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The processing stations of the continuous stamping die are sequentially set along the material belt transmission direction as follows: punching guide hole station, pre-forming station, punching inner hole station, 45° pre-flanging station, secondary forming station, half-cutting station, back pressing station, flanging station and part ejection station.

5. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The feeding step distance of the servo feeder can be adjusted by setting parameters, and the step distance error is no greater than ±0.02mm, which is suitable for the processing spacing of each station of the continuous stamping die.

6. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The metal coil is a special metal sheet for automotive parts, which is formed into a ring structure with uniform inner and outer diameters after being processed by a continuous stamping die.

7. The continuous production apparatus for ring-shaped stamped parts according to claim 4, characterized in that, The 45° pre-flanging station is used to pre-flang the edges of the parts at a 45° angle to ensure the processing accuracy of subsequent flanging stations.

8. The continuous production apparatus for ring-shaped stamped parts according to claim 1, characterized in that, The upper and lower dies of the continuous stamping die are equipped with matching stamping structures for each processing station to ensure the consistency of processing in each process.

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