A concave cylindrical workpiece stamping die

Abstract

The utility model provides a recessed cylindrical workpiece stamping die, including box, lifting frame, cylinder, first rotating frame, first servo motor, lower mould, first brake mechanism, second rotating frame, second servo motor, second brake mechanism, mounting panel and upper die, the inside of box is equipped with lifting frame through cylinder, is equipped with a plurality of lower mould through first rotating frame on the lifting frame, and first rotating frame both ends are linked with first servo motor and first brake mechanism respectively, it is equipped with a plurality of upper die through second rotating frame on mounting panel, and second rotating frame both ends are linked with second servo motor and second brake mechanism respectively, the utility model discloses the cooperation of first rotating frame, first servo motor, second rotating frame and second servo motor, is convenient for the replacement of lower mould and upper die, second, through first brake mechanism and second brake mechanism can lock lower mould and upper die, in addition, the setting of lower mould is convenient for taking out the formed workpiece.

Description

Technical Field

[0001] This utility model belongs to the field of stamping technology, and in particular relates to a stamping die for a concave cylindrical workpiece. Background Technology

[0002] Concave cylindrical workpieces are common component structures in the industrial field. They are cylindrical in shape with inward-curving inner walls or ends, and are widely used in automobile manufacturing (such as shock absorber housings and oil pipe joints), household appliances (such as compressor components and pipe connectors), and mechanical transmission systems (such as bearing housings and sleeves). These workpieces are usually formed by stamping processes, and the stamping die for concave cylindrical workpieces is the core equipment for realizing this process. Its function is to use the closed extrusion of the upper and lower dies to stamp metal sheets (such as steel plates and aluminum plates) into cylindrical structures with concave features in one go or in steps, which has the characteristics of high forming efficiency and good product consistency.

[0003] Currently, the industry uses a fixed structure for stamping dies for concave cylindrical workpieces. Its core components include: a lower die base fixed to the stamping machine worktable, an upper die base installed on the stamping machine slide, a lower die (including forming cavity) assembled on the lower die base, and an upper die (including stamping punch) assembled on the upper die base.

[0004] The workflow is as follows: the manual places the sheet metal to be processed into the positioning area of ​​the lower die, the stamping machine drives the upper die base to move downward, the upper die and the lower die close, and the sheet metal is stamped into a concave cylindrical structure by the cooperation of the punch and the cavity; after the stamping is completed, the upper die base moves upward, and the workpiece is removed by manual or robotic arm to complete a single stamping cycle.

[0005] However, in actual use, existing concave cylindrical workpiece stamping dies have several drawbacks. First, the upper and lower dies are usually fixed to the die base with bolts. If different specifications (such as diameter, concave depth, and wall thickness) of concave cylindrical workpieces need to be processed, the old die must be manually disassembled, calibrated, and a new die installed after the machine is stopped. This process is not only time-consuming, but frequent disassembly can also cause wear on the die base positioning reference, reduce the die assembly accuracy, and thus affect product consistency. Second, after stamping with existing concave cylindrical workpiece stamping dies, due to the tight fit between the workpiece and the inner hole of the die (especially the concave part is prone to vacuum adsorption), the workpiece needs to be manually pried with tools to remove it, which is not only inefficient, but may also scratch the surface of the workpiece.

[0006] Therefore, it is essential to invent a concave cylindrical workpiece stamping die. Utility Model Content

[0007] To address the above problems, this utility model proposes a stamping die for a concave cylindrical workpiece, and the technical solution used is as follows: A concave cylindrical workpiece stamping die includes a housing, a lifting frame, a cylinder, a first rotating frame, a first servo motor, a lower die, a first braking mechanism, a second rotating frame, a second servo motor, a second braking mechanism, a mounting plate, and an upper die. The housing is bolted to the worktable of a stamping machine, and a lifting frame is slidably mounted inside the housing. The lower side of the lifting frame is fixed to the housing via a cylinder, which is electrically connected to the stamping machine's control system via a data cable. The upper end of the lifting frame is rotatably mounted with a first rotating frame via a support bearing. One end of the first rotating frame is fixed to the output end of the first servo motor, and the other end is fixed to the execution end of the first braking mechanism. Both the first servo motor and the first braking mechanism are bolted to the lifting frame. Each braking mechanism is electrically connected to the control system of the stamping machine via a data cable; several lower dies are evenly fixed to the outer side of the first rotating frame with bolts; a mounting plate is provided on the upper side of the housing, wherein the mounting plate is fixed to the execution end of the lifting mechanism of the stamping machine with bolts; a second rotating frame is rotatably mounted on the lower end of the mounting plate via a support bearing, wherein one end of the second rotating frame is fixed to the output end of the second servo motor, and the other end of the second rotating frame is fixed to the execution end of the second braking mechanism; the second servo motor and the second braking mechanism are both fixed to the mounting plate with bolts, and both the second servo motor and the second braking mechanism are electrically connected to the control system of the stamping machine via a data cable; several upper dies are evenly fixed to the outer side of the second rotating frame with bolts, wherein the upper dies are correspondingly arranged with the lower dies.

[0008] Furthermore, the lower mold includes a cylindrical body, a stamping hole, a buffer cavity, an ejector pin, and a compression spring. The cylindrical body is fixed to the outer side of the first rotating frame by bolts, and the interior of the cylindrical body is provided with a stamping hole and a buffer cavity. An ejector pin is slidably installed inside the cylindrical body, with one end of the ejector pin located inside the stamping hole and the other end located inside the buffer cavity. A compression spring is fixed between one end of the ejector pin and the inner wall of the buffer cavity. The stamping hole has a stepped structure. The buffer cavity communicates with the outside of the cylindrical body. This arrangement allows it to cooperate with the upper mold to form the workpiece into a corresponding cylindrical structure. At the same time, it can eject the workpiece inside the stamping hole, thus facilitating part removal.

[0009] Furthermore, the first braking mechanism includes a protective shell, a connecting column, a turntable, a locking block, and an electric push rod. The protective shell is fixed to the first braking mechanism by bolts, and the connecting column is rotatably mounted inside the protective shell via a support bearing. One end of the connecting column is fixed to the first rotating frame. A turntable is fixed to the outer side of the connecting column, and the outer side of the turntable has several protrusions. A locking block is provided on one side of the turntable, and the side of the locking block away from the turntable is fixed to the protective shell via an electric push rod. The electric push rod is electrically connected to the control system of the stamping machine via a data cable. The side of the locking block near the turntable has a slot that corresponds to the protrusion. This arrangement allows the electric push rod to drive the locking block to fit against the turntable, thereby locking the first rotating frame and preventing the first rotating frame from rotating.

[0010] Furthermore, the internal structure of the second braking mechanism is the same as that of the first braking mechanism. This arrangement enables the second braking mechanism to lock the second rotating frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, through the arrangement of a first rotating frame and a first servo motor, enables different lower dies to be set on the upper side of the first rotating frame. At the same time, through the cooperation of a second rotating frame and a second servo motor, different lower dies can be set on the lower side of the second rotating frame. Through the above actions, the stamping action can be completed using different lower dies and upper dies without the need to remove and replace the lower dies and upper dies. 2. The first braking mechanism and the second braking mechanism of this utility model can drive the locking block to fit against the turntable through the electric push rod, thereby locking the first rotating frame and the second rotating frame and preventing the first rotating frame and the second rotating frame from rotating. 3. The design of the lower mold in this utility model allows the workpiece to gradually form a cylindrical structure when the corresponding upper mold slowly enters the punching hole under the drive of the pressing machine's lifting mechanism. Then, as the upper mold passes the stepped position of the punching hole, the cylindrical workpiece is recessed inward again. The buffer cavity can prevent the workpiece from being vacuum-adhered to the inner wall of the punching hole. Furthermore, when the punching is completed and the upper and lower molds separate, the ejector pin can push the workpiece out of the punching hole under the action of the compression spring, thus facilitating the removal of the part. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the lower mold of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the first braking mechanism of this utility model.

[0016] In the picture: 1-Box body, 2-Lifting frame, 3-Cylinder, 4-First rotating frame, 5-First servo motor, 6-Lower mold, 61-Cylinder body, 62-Punching hole, 63-Buffer cavity, 64-Ejector pin, 65-Compression spring, 7-First braking mechanism, 71-Protective shell, 72-Connecting column, 73-Turntable, 74-Clocking block, 75-Electric push rod, 8-Second rotating frame, 9-Second servo motor, 10-Second braking mechanism, 11-Mounting plate, 12-Upper mold. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1 to 3As shown, this utility model is a concave cylindrical workpiece stamping die, including a housing 1, a lifting frame 2, a cylinder 3, a first rotating frame 4, a first servo motor 5, a lower die 6, a first braking mechanism 7, a second rotating frame 8, a second servo motor 9, a second braking mechanism 10, a mounting plate 11, and an upper die 12. The housing 1 is fixed to the worktable of the stamping machine by bolts, and the lifting frame 2 is slidably installed inside the housing 1. The lower side of the lifting frame 2 is fixed to the housing 1 by a cylinder 3, which is electrically connected to the control system of the stamping machine via a data cable. The upper end of the lifting frame 2 is rotatably mounted with a first rotating frame 4 via a support bearing. One end of the first rotating frame 4 is fixed to the output end of the first servo motor 5, and the other end of the first rotating frame 4 is fixed to the execution end of the first braking mechanism 7. The first servo motor 5 and the first braking mechanism 7 are both fixed to the lifting frame 2 by bolts, and the first servo motor 8, second servo motor 9, second braking mechanism 10, mounting plate 11, and upper die 12. A servo motor 5 and a first braking mechanism 7 are both electrically connected to the control system of the stamping machine via data cables; several lower dies 6 are evenly fixed to the outer side of the first rotating frame 4 by bolts; a mounting plate 11 is provided on the upper side of the housing 1, wherein the mounting plate 11 is fixed to the execution end of the lifting mechanism of the stamping machine by bolts; a second rotating frame 8 is rotatably mounted on the lower end of the mounting plate 11 via a support bearing, wherein one end of the second rotating frame 8 is fixed to the output end of the second servo motor 9, and the other end of the second rotating frame 8 is fixed to the execution end of the second braking mechanism 10; the second servo motor 9 and the second braking mechanism 10 are both fixed to the mounting plate 11 by bolts, and the second servo motor 9 and the second braking mechanism 10 are both electrically connected to the control system of the stamping machine via data cables; several upper dies 12 are evenly fixed to the outer side of the second rotating frame 8 by bolts, wherein the upper dies 12 are correspondingly arranged with the lower dies 6.

[0020] Specifically, the lower mold 6 includes a cylindrical body 61, a stamping hole 62, a buffer cavity 63, an ejector pin 64, and a compression spring 65. The cylindrical body 61 is fixed to the outer side of the first rotating frame 4 by bolts, and the cylindrical body 61 has a stamping hole 62 and a buffer cavity 63 respectively. An ejector pin 64 is slidably installed inside the cylindrical body 61, with one end of the ejector pin 64 located inside the stamping hole 62 and the other end of the ejector pin 64 located inside the buffer cavity 63. A compression spring 65 is fixed between one end of the ejector pin 64 and the inner wall of the buffer cavity 63. The stamping hole 62 has a stepped structure. The buffer cavity 63 and the cylindrical body 61 are connected. Externally connected, when the corresponding upper die 12 is driven by the lifting mechanism of the stamping machine to slowly enter the interior of the stamping hole 62, the workpiece can gradually form a cylindrical structure. Then, as the upper die 12 passes the stepped position of the stamping hole 62, the cylindrical workpiece can be recessed inward again. The buffer cavity 63 can prevent the workpiece from being vacuum-adhered to the inner wall of the stamping hole 62. Furthermore, when the stamping is completed and the upper die 12 separates from the lower die 6, the ejector pin 64 can push the workpiece out inside the stamping hole 62 under the action of the compression spring 65, so as to facilitate the removal of the part.

[0021] Specifically, the first braking mechanism 7 includes a protective shell 71, a connecting column 72, a turntable 73, a locking block 74, and an electric push rod 75. The protective shell 71 is fixed to the first braking mechanism 7 by bolts, and the connecting column 72 is rotatably mounted inside the protective shell 71 via a support bearing. One end of the connecting column 72 is fixed to the first rotating frame 4. The turntable 73 is fixed to the outer side of the connecting column 72, and the outer side of the turntable 73 has several protrusions. A locking block 74 is provided on one side of the turntable 73, and the side of the locking block 74 away from the turntable 73 is fixed to the protective shell 71 via the electric push rod 75. The electric push rod 75 is electrically connected to the control system of the press through a data cable. The side of the locking block 74 near the turntable 73 has a slot that matches the protrusion. This arrangement allows the electric push rod 75 to drive the locking block 74 to fit against the turntable 73, thereby locking the first rotating frame 4 and preventing the first rotating frame 4 from rotating.

[0022] Specifically, the internal structure of the second braking mechanism 10 is the same as that of the first braking mechanism 7. This arrangement enables the second braking mechanism 10 to lock the second rotating frame 8.

[0023] Please see Figure 1-3As shown, this utility model is a concave cylindrical workpiece stamping die. Its working principle is as follows: When in use, the workpiece can be placed on the box 1, and then the mounting plate 11 is moved down by the lifting mechanism of the stamping machine, so that the corresponding upper die 12 and lower die 6 cooperate to stamp the workpiece. Next, the lifting frame 2 can be moved down by the cylinder 3, and then the corresponding lower die 6 is moved to the upper side of the first rotating frame 4 by the cooperation of the first servo motor 5 and the first rotating frame 4, thereby completing the replacement of the lower die 6. At the same time, by the cooperation of the second rotating frame 8 and the second servo motor 9, the corresponding lower die 6 can be moved to the lower side of the second rotating frame 8, thereby completing the replacement of the upper die 12. In addition, after the replacement of the upper die 12 and the lower die 6 is completed, the first rotating frame 4 and the second rotating frame 8 can be locked by the first braking mechanism 7 and the second braking mechanism 10.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A concave cylindrical workpiece stamping die, comprising a housing (1), a lifting frame (2), a cylinder (3), a first rotating frame (4), a first servo motor (5), a lower die (6), a first braking mechanism (7), a second rotating frame (8), a second servo motor (9), a second braking mechanism (10), a mounting plate (11), and an upper die (12), characterized in that: The housing (1) is fixed on the workbench of the stamping machine, and a lifting frame (2) is slidably installed inside the housing (1). The lower side of the lifting frame (2) is fixed to the housing (1) by a cylinder (3), which is electrically connected to the control system of the stamping machine via a data cable. A first rotating frame (4) is rotatably installed on the upper end of the lifting frame (2). One end of the first rotating frame (4) is fixed to the output end of the first servo motor (5), and the other end of the first rotating frame (4) is fixed to the execution end of the first braking mechanism (7). The first servo motor (5) and the first braking mechanism (7) are both fixed to the lifting frame (2), and both are electrically connected to the control system of the stamping machine via a data cable. The outer side of the first rotating frame (4) is uniformly fixed. A number of lower molds (6) are fixed; an mounting plate (11) is provided on the upper side of the box body (1), wherein the mounting plate (11) is fixed to the lifting mechanism execution end of the stamping machine; a second rotating frame (8) is rotatably mounted on the lower end of the mounting plate (11), wherein one end of the second rotating frame (8) is fixed to the output end of the second servo motor (9), and the other end of the second rotating frame (8) is fixed to the execution end of the second braking mechanism (10); the second servo motor (9) and the second braking mechanism (10) are both fixed to the mounting plate (11), and the second servo motor (9) and the second braking mechanism (10) are both electrically connected to the control system of the stamping machine through a data line; a number of upper molds (12) are uniformly fixed on the outer side of the second rotating frame (8), wherein the upper molds (12) are correspondingly set with the lower molds (6).

2. The concave cylindrical workpiece stamping die as described in claim 1, characterized in that: The lower mold (6) includes a cylindrical body (61), a punching hole (62), a buffer cavity (63), an ejector pin (64), and a compression spring (65). The cylindrical body (61) is fixed to the outer side of the first rotating frame (4), and the cylindrical body (61) has a punching hole (62) and a buffer cavity (63) respectively. An ejector pin (64) is slidably installed inside the cylindrical body (61), with one end of the ejector pin (64) located inside the punching hole (62) and the other end of the ejector pin (64) located inside the buffer cavity (63). A compression spring (65) is fixed between one end of the ejector pin (64) and the inner wall of the buffer cavity (63). The punching hole (62) has a stepped structure. The buffer cavity (63) is connected to the outside of the cylindrical body (61).

3. The concave cylindrical workpiece stamping die as described in claim 1, characterized in that: The first braking mechanism (7) includes a protective shell (71), a connecting column (72), a turntable (73), a locking block (74), and an electric push rod (75). The protective shell (71) is fixed to the first braking mechanism (7), and the connecting column (72) is rotatably installed inside the protective shell (71). One end of the connecting column (72) is fixed to the first rotating frame (4). The turntable (73) is fixed on the outer side of the connecting column (72), and several protrusions are provided on the outer side of the turntable (73). A locking block (74) is provided on one side of the turntable (73), and the side of the locking block (74) away from the turntable (73) is fixed to the protective shell (71) through the electric push rod (75). The electric push rod (75) is electrically connected to the control system of the stamping machine through a data cable. The side of the locking block (74) near the turntable (73) has a slot that is adapted to the protrusion.

4. The concave cylindrical workpiece stamping die as described in claim 3, characterized in that: The internal structure of the second braking mechanism (10) is the same as that of the first braking mechanism (7).

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