A variable cavity stamping die

Abstract

The utility model discloses a stamping die of variable mould cavity, including base, the upper side of base is fixedly connected with die, the left and right sides of die all are slidably connected with adjusting plate, the both sides of base all are fixedly connected with fixed shell, the both sides of base all are fixedly connected with support seat no.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and more specifically, to a stamping die with a variable cavity. Background Technology

[0002] In cold stamping, pressure is applied to the material using a stamping die mounted on a press, forming parts at room temperature. This process causes material to separate or undergo plastic deformation, ultimately yielding the desired part. The stamping die is the specialized equipment used to achieve this process.

[0003] Existing stamping dies still have the following defects: 1. The core problem with existing stamping dies is that their working cavities are mostly designed with a fixed, non-adjustable single size. When the production line needs to switch to process workpieces of different sizes and specifications, production must be stopped, and the entire die must be manually disassembled and a new die installed. This frequent and time-consuming overall changeover process severely slows down the production pace, resulting in a significant reduction in overall stamping efficiency.

[0004] 2. For molds with a certain degree of adjustment capability, the precision mechanism used to fine-tune the size or position of the mold cavity is prone to cumulative deformation, micro-displacement or expansion of the fitting clearance after being subjected to huge stamping impact force continuously, resulting in inaccurate control of the final mold cavity size.

[0005] 3. When existing molds are subjected to the huge impact force generated by stamping workpieces, the force is directly transmitted to the adjustment structure of the mold with almost no buffer. Due to the lack of effective auxiliary devices to absorb the impact energy, the adjustment structure is subjected to stress for a long time and is very easy to be damaged.

[0006] Therefore, there is an urgent need to develop a stamping die with a variable cavity. Utility Model Content

[0007] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a stamping die with variable cavity to solve the technical problem of low stamping efficiency mentioned in the background art.

[0008] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a stamping die with a variable cavity, comprising a base, a die fixedly connected to the upper side of the base, adjusting plates slidably connected to both sides of the die, a fixed shell fixedly connected to both sides of the base, the fixed shell being fixedly connected to the die, a support seat one fixedly connected to both sides of the base, a threaded sleeve rotatably connected to the support seat one, the threaded sleeve being rotatably connected to the adjacent fixed shell, a threaded rod threadedly connected to the threaded sleeve, a support seat two fixedly connected to the base, a worm gear rotatably connected to the support seat two, a worm wheel fixedly connected to the outer side of the threaded sleeve, the worm wheel meshing with the adjacent worm gear, a servo motor embedded in the fixed shell, the output shaft of the servo motor being fixedly connected to the adjacent worm gear, a hexagonal blind hole provided on the adjusting plate, a hexagonal block slidably connected in the hexagonal blind hole of the adjusting plate, the threaded rod being fixedly connected to the adjacent hexagonal block, and a fixing structure provided on the fixed shell.

[0009] The present invention is further configured such that through holes are provided on both sides of the mold, and the threaded sleeve passes through the adjacent through holes of the mold.

[0010] The present invention is further configured such that a cover plate is fixedly connected to the hexagonal blind hole of the adjusting plate, the threaded rod passes through the cover plate, and the two slide and seal together.

[0011] The present invention is further configured such that the fixing structure includes two support rods, both of which are slidably connected to adjacent fixing shells. The support rods pass through the mold and are fixedly connected to the adjusting plate on the same side. The fixing shell is fixedly connected to two mounting columns, and two limiting members are slidably connected to the two mounting columns. The mounting columns are located between the two limiting members.

[0012] The present invention is further configured such that the fixed shell is fixedly connected to two hydraulic push rods, and the telescopic ends of the two hydraulic push rods are respectively fixedly connected to the two limiting members.

[0013] The present invention is further configured such that the limiting member has two arc-shaped concave sides, and a friction plate is fixedly connected to the arc-shaped concave side of the limiting member.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a stamping die with a variable cavity, which has the following beneficial effects: This invention uses two servo motors, with a worm gear driving a worm wheel to rotate, thereby causing the threaded sleeve to rotate circumferentially. The threaded sleeve causes the threaded rod to extend outward through the thread, adjusting the distance between the two adjusting plates. This allows the mold to stamp workpieces of different sizes, thus avoiding the need for frequent mold changes when the workpiece size changes. This stamping mold improves the work efficiency of workpiece stamping.

[0015] This invention provides a hexagonal blind hole on the adjustment plate, which prevents the threaded rod and threaded sleeve from being subjected to lateral impact force during workpiece stamping. This avoids the impact force generated during long-term stamping of the threaded rod and threaded sleeve, which could cause wear on the threads between the threaded rod and threaded sleeve and affect the adjustment accuracy of the mold.

[0016] This invention uses a hydraulic push rod to drive the limiting component to slide along the mounting column. The two limiting components move closer together to squeeze and limit the support rod, thereby improving the stability of the two adjusting plates and preventing the two adjusting plates from shifting during workpiece stamping, which could cause the screw rod and threaded sleeve to be damaged by impact during the workpiece stamping process. Attached Figure Description

[0017] Figure 1 This is a front view of a stamping die with a variable cavity, according to the present invention. Figure 2 This is a cross-sectional view of the mold and adjusting plate in this utility model; Figure 3 This is a cross-sectional view of the adjusting plate and the fixed shell in this utility model; Figure 4 This is a schematic diagram of the threaded rod and hexagonal block in this utility model; Figure 5 This is a schematic diagram of the support rod and limiting component in this utility model.

[0018] In the diagram: 1. Base; 2. Mold; 3. Adjusting plate; 4. Fixed shell; 5. Support seat one; 6. Threaded sleeve; 7. Threaded rod; 8. Support seat two; 9. Worm gear; 10. Worm wheel; 11. Servo motor; 12. Hexagonal block; 13. Cover plate; 14. Support rod; 15. Mounting column; 16. Limiting component; 17. Hydraulic push rod; 18. Friction plate. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] See Figures 1-5 A variable cavity stamping die includes a base 1, a die 2 fixedly connected to the upper side of the base 1, adjusting plates 3 slidably connected to both sides of the die 2, fixed shells 4 fixedly connected to both sides of the base 1 and the die 2, support seats 5 fixedly connected to both sides of the base 1, threaded sleeves 6 rotatably connected to the support seats 5 and adjacent fixed shells 4, threaded rods 7 threadedly connected to the inner thread of the threaded sleeves 6, support seats 8 fixedly connected to the base 1, worm gears 9 rotatably connected to the support seats 8, and worm wheels 10 fixedly connected to the outer side of the threaded sleeves 6. The worm gear 10 meshes with the adjacent worm 9. The fixed housing 4 is embedded with a servo motor 11. The output shaft of the servo motor 11 is fixedly connected to the adjacent worm 9. The adjusting plate 3 is provided with a hexagonal blind hole. A hexagonal block 12 is slidably connected in the hexagonal blind hole of the adjusting plate 3. The threaded rod 7 is fixedly connected to the adjacent hexagonal block 12. The fixed housing 4 is provided with a fixing structure. Both sides of the mold 2 are provided with through holes. The threaded sleeve 6 passes through the adjacent through holes of the mold 2. A cover plate 13 is fixedly connected to the hexagonal blind hole of the adjusting plate 3. The threaded rod 7 passes through the cover plate 13, and the two slide and seal together.

[0023] Please see Figure 2 , Figure 3 and Figure 5 The fixed structure includes two support rods 14, both of which are slidably connected to adjacent fixed shells 4. The support rods 14 pass through the mold 2 and are fixedly connected to the adjusting plate 3 on the same side. Two mounting columns 15 are fixedly connected to the fixed shell 4. Two limiting members 16 are slidably connected to the two mounting columns 15, and the mounting columns 15 are located between the two limiting members 16. Two hydraulic push rods 17 are fixedly connected to the fixed shell 4. The telescopic ends of the two hydraulic push rods 17 are respectively fixedly connected to the two limiting members 16. The limiting members 16 are provided with two arc-shaped concave sides, and friction plates 18 are fixedly connected inside the arc-shaped concave sides of the limiting members 16.

[0024] Working principle: During use, two servo motors 11 are started. The output of the servo motors 11 drives the adjacent worm gear 9 to rotate, and the worm gear 9 drives the adjacent worm wheel 10 to rotate. Taking the threaded sleeve 6 on the left as an example: The worm gear 10 drives the threaded sleeve 6 to rotate. Since the threaded rod 7 is connected to the adjusting plate 3 through the hexagonal block 12, when the threaded sleeve 6 rotates, the threaded rod 7 moves to the right. The threaded rod 7 presses the hexagonal block 12 to the right, and the hexagonal block 12 pushes the adjusting plate 3 to the right. The adjusting plate 3 slides to the right along the mold 2. After the two adjusting plates 3 have been adjusted, the two servo motors 11 are turned off.

[0025] When the adjusting plate 3 moves, it will cause the two support rods 14 fixed on it to slide. The support rods 14 slide along the fixed shell 4. When the adjusting plate 3 is adjusted, the hydraulic push rod 17 is activated. The hydraulic push rod 17 causes the limiting member 16 to slide along the mounting column 15. The two limiting members 16 move closer to each other and squeeze and limit the support rods 14. At the same time, the friction plate 18 increases the friction between the limiting member 16 and the support rod 14.

[0026] After the support rod 14 is fixed, the two adjusting plates 3 are also fixed. Then, the two servo motors 11 are started, and the output shafts of the servo motors 11 rotate in the opposite direction by one revolution, so that there is no lateral squeezing force between the hexagonal block 12 and the adjusting plate 3. When the distance between the two adjusting plates 3 increases when needed, the hexagonal block 12 will squeeze the adjacent change, thereby causing the two adjusting plates 3 to move to both sides.

[0027] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stamping die with a variable cavity, comprising a base (1), characterized in that: A mold (2) is fixedly connected to the upper side of the base (1). Adjustment plates (3) are slidably connected to both sides of the mold (2). Fixed shells (4) are fixedly connected to both sides of the base (1). The fixed shells (4) are fixedly connected to the mold (2). Support base one (5) is fixedly connected to both sides of the base (1). Threaded sleeves (6) are rotatably connected to the support base one (5). Threaded sleeves (6) are rotatably connected to the adjacent fixed shells (4). Threaded rods (7) are threadedly connected to the threaded sleeves (6). Support base two (8) is fixedly connected to the base (1). The second support (8) is rotatably connected to a worm (9), and a worm wheel (10) is fixedly connected to the outside of the threaded sleeve (6). The worm wheel (10) meshes with the adjacent worm (9). The fixed shell (4) is embedded with a servo motor (11). The output shaft of the servo motor (11) is fixedly connected to the adjacent worm (9). The adjusting plate (3) is provided with a hexagonal blind hole. A hexagonal block (12) is slidably connected in the hexagonal blind hole of the adjusting plate (3). The threaded rod (7) is fixedly connected to the adjacent hexagonal block (12). The fixed shell (4) is provided with a fixing structure.

2. A stamping die with a variable cavity according to claim 1, characterized in that: Both sides of the mold (2) are provided with through holes, and the threaded sleeve (6) passes through the adjacent through holes of the mold (2).

3. A stamping die with a variable cavity according to claim 2, characterized in that: A cover plate (13) is fixed to the hexagonal blind hole of the adjusting plate (3), and the threaded rod (7) passes through the cover plate (13), and the two slide and seal together.

4. A stamping die with a variable cavity according to claim 3, characterized in that: The fixed structure includes two support rods (14), both of which are slidably connected to the adjacent fixed shells (4). The support rods (14) pass through the mold (2) and are fixedly connected to the adjustment plate (3) on the same side. The fixed shells (4) are fixedly connected to two mounting columns (15), and two limiting members (16) are slidably connected to the two mounting columns (15). The mounting columns (15) are located between the two limiting members (16).

5. A stamping die with a variable cavity according to claim 4, characterized in that: The fixed shell (4) is fixedly connected to two hydraulic push rods (17), and the telescopic ends of the two hydraulic push rods (17) are respectively fixedly connected to the two limiting members (16).

6. A stamping die with a variable cavity according to claim 5, characterized in that: The limiting member (16) is provided with two arc-shaped concave sides, and a friction plate (18) is fixedly connected inside the arc-shaped concave sides of the limiting member (16).

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