Sheet metal part stretching die

Abstract

The utility model relates to the technical field of sheet metal part stretching, and discloses a sheet metal part stretching die which comprises a base, a die body is arranged at the top of the base, a fixing assembly is arranged at the bottom of the die body, a taking assembly is arranged in the die body, and the fixing assembly comprises a mounting frame fixedly connected to the top of the base. A hydraulic rod is arranged in the mounting frame, clamping arms are rotatably connected to the two ends of the hydraulic rod correspondingly, connecting rods are rotatably connected to the middles of the clamping arms, limiting sleeves are rotatably connected to one ends of the connecting rods, limiting rods are slidably connected into the limiting sleeves, and supporting rods are fixedly connected to the left side wall and the right side wall of the mounting frame correspondingly. And clamping blocks are rotationally connected to the tops of the clamping arms. According to the utility model, through the structural arrangement of the fixing assembly, the problems that in the prior art, when a mold is replaced, a large number of bolts need to be disassembled and replaced, time and labor are wasted, and high-efficiency production is not facilitated are solved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal stretching technology, and in particular to a sheet metal stretching die. Background Technology

[0002] With the rapid development of industrial manufacturing, especially the growing demand for metal parts in industries such as automobiles, electronics, and home appliances, sheet metal stretching dies have emerged to achieve efficient transformation of sheet metal parts from flat thin plates to three-dimensional forming and improve production efficiency and product quality. Through the precise design of the die and the cooperation of the press, sheet metal materials are stretched into the required shape using the principle of plastic deformation to meet the needs of modern industry for standardized and large-scale manufacturing.

[0003] When existing sheet metal stretching dies are in operation, a flat sheet metal blank is placed between a die and a punch. Vertical pressure is applied by a press, causing the punch to move downward and squeeze the blank. The blank undergoes plastic deformation under the action of the rounded corners of the die and the punch, and is forced to flow into the die cavity. As the punch continues to move downward, the blank is gradually stretched into a three-dimensional sheet metal part that conforms to the shape of the punch. Finally, the formed part is removed from the die by an unloading device, realizing the plastic forming process from a plane to a three-dimensional structure.

[0004] However, existing sheet metal stretching dies require the removal of a large number of bolts for disassembly and replacement when changing the die, which is time-consuming and labor-intensive and not conducive to high-efficiency production. Therefore, a sheet metal stretching die is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sheet metal stretching die, which aims to improve the problem that in the prior art, a large number of bolts need to be removed for disassembly and replacement when changing the die, which is time-consuming, labor-intensive, and not conducive to high-efficiency production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sheet metal stretching mold, comprising a base, a mold body disposed on the top of the base, a fixing component disposed on the bottom of the mold body, a picking component disposed inside the mold body, the fixing component comprising a mounting bracket fixedly connected to the top of the base, a hydraulic rod disposed inside the mounting bracket, clamping arms rotatably connected to both ends of the hydraulic rod, a connecting rod rotatably connected to the middle of the clamping arms, a limit sleeve rotatably connected to one end of the connecting rod, a limit rod slidably connected inside the limit sleeve, support rods fixedly connected to the left and right sidewalls of the mounting bracket, clamping blocks rotatably connected to the top of each clamping arm, and limit blocks fixedly connected to the opposite sidewalls of each clamping block;

[0007] As a further description of the above technical solution:

[0008] The picking component includes multiple telescopic rods fixedly connected inside the mold body. Each telescopic rod is fitted with a spring. One end of each spring is fixedly connected to a placement plate. A suction cup is fixedly connected to the top of the placement plate. A sliding groove is opened inside the mold body.

[0009] As a further description of the above technical solution:

[0010] Limiting grooves are provided on the left and right side walls of the mold body;

[0011] As a further description of the above technical solution:

[0012] The clamping arm is rotatably connected to one end of the support rod, and the limiting rod is fixedly connected inside the mounting frame;

[0013] As a further description of the above technical solution:

[0014] The clamping block is slidably connected to the top of the mounting frame, and the limiting block is slidably connected to the inside of the limiting groove;

[0015] As a further description of the above technical solution:

[0016] The hydraulic rod is located below the limiting rod and is suspended in the air.

[0017] As a further description of the above technical solution:

[0018] One end of the spring is fixedly connected inside the mold body;

[0019] As a further description of the above technical solution:

[0020] The placement plate is slidably connected inside the groove, and one end of the telescopic rod is fixedly connected to the bottom of the placement plate.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, through the structural setting of the fixed component, the hydraulic rod serves as the power core. With the high efficiency and precision of hydraulic transmission, it provides a strong, stable, and controllable power source for the rotation of the clamping arm. With the support rod as the rotation fulcrum, the clamping arm rotates smoothly under the push of the hydraulic rod. This lever-type transmission design effectively amplifies the power, enabling strong clamping of the mold body with a relatively small hydraulic driving force. The limiting sleeve slides along the limiting rod to ensure that the movement height of the clamping arms on both sides is synchronized, avoiding uneven clamping caused by movement deviation. This significantly improves the stability and reliability of clamping and solves the problem in the prior art that a large number of bolts need to be removed for disassembly and replacement when changing the mold, which is time-consuming, labor-intensive, and not conducive to high-efficiency production.

[0023] 2. In this utility model, through the structural design of the pick-up component, during the stretching process, the top mold applies pressure to move the sheet metal part downwards, and the placement plate moves accordingly, compressing the telescopic rod and spring, causing the air inside the suction cup to be squeezed, which greatly enhances the suction force of the suction cup on the sheet metal part, ensuring that the sheet metal part maintains a precise position during stretching and forming, effectively avoiding processing errors caused by displacement and shaking. After stretching is completed, the elastic reset function of the spring plays a key role, driving the placement plate to move upwards, and the telescopic rod extends synchronously, pushing the processed sheet metal part upwards, so that it is separated from the bottom mold body, simplifying the part picking process, improving processing efficiency, and enhancing the practicality of the sheet metal stretching mold. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a sheet metal stretching die proposed in this utility model;

[0025] Figure 2 This is a structural schematic diagram of a fixing component for a sheet metal stretching die proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a sheet metal stretching die taking component proposed in this utility model.

[0027] Legend:

[0028] 1. Base; 2. Mold body; 3. Fixing component; 4. Picking component; 5. Limiting groove; 31. Mounting bracket; 32. Hydraulic rod; 33. Clamping arm; 34. Connecting rod; 35. Limiting sleeve; 36. Limiting rod; 37. Support rod; 38. Clamping block; 39. Limiting block; 41. Telescopic rod; 42. Spring; 43. Placement plate; 44. Suction cup; 45. Slide groove. Detailed Implementation

[0029] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-3This utility model provides an embodiment of a sheet metal stretching die, including a base 1, which is the basic load-bearing component of the entire die system. A die body 2 is mounted on the top of the base 1, and a fixing component 3 is mounted on the bottom of the die body 2 for easy fixing during replacement. A retrieval component 4 is provided inside the die body 2 for easy removal after stretching. The fixing component 3 includes a mounting bracket 31 fixedly connected to the top of the base 1. The mounting bracket 31 is the basic support structure of the fixing component 3, and the mounting bracket 31 contains... There is a hydraulic rod 32, which is the core power component of the fixed assembly 3. Both ends of the hydraulic rod 32 are rotatably connected to clamping arms 33. The clamping arms 33 are the direct execution components for clamping the mold body 2. A connecting rod 34 is rotatably connected to the middle of the clamping arm 33. One end of the connecting rod 34 is rotatably connected to a limit sleeve 35. Through the rotatable connection between the connecting rod 34 and the limit sleeve 35, it can be ensured that the two clamping arms 33 maintain a high degree of synchronization during the movement. A limit rod 36 is slidably connected inside the limit sleeve 35 to provide movement guidance for the limit sleeve 35. Support rods 37 are fixedly connected to the left and right side walls of the mounting frame 31 to provide basic support for the clamping arms 33. Clamping blocks 38 are rotatably connected to the top of each clamping arm 33. Limiting blocks 39 are fixedly connected to the opposite side walls of the clamping blocks 38. Limiting grooves 5 are formed on the left and right side walls of the mold body 2. When the clamping blocks 38 move, the limiting blocks 39 enter the limiting grooves 5 to fix the mold body 2. The clamping arms 33 are rotatably connected to one end of the support rods 37, which provide the rotation axis for the clamping arms 33. Limiting rods 36 are fixedly connected to the mounting frame 31. Inside, the mounting bracket 31 fixes the position of the limiting rod 36, the clamping block 38 is slidably connected to the top of the mounting bracket 31, the clamping arm 33 pushes the clamping block 38 to move on the top of the mounting bracket 31, the limiting block 39 is slidably connected inside the limiting groove 5, the limiting groove 5 provides positioning guidance for the limiting block 39 to fix the mold body 2, the hydraulic rod 32 is located below the limiting rod 36, the hydraulic rod 32 is suspended, which effectively avoids the interference problem caused by the bottom support, making it more flexible and smooth in the movement, and also facilitates the arrangement and maintenance of the hydraulic rod 32.

[0031] Reference Figures 1-3The take-up component 4 includes multiple telescopic rods 41 fixedly connected inside the mold body 2. Each telescopic rod 41 is fitted with a spring 42. The telescopic rods 41 and the springs 42 together form an elastic reset mechanism. One end of each spring 42 is fixedly connected to a placement plate 43. The placement plate 43 is used to support sheet metal parts. A suction cup 44 is fixedly connected to the top of the placement plate 43. When the sheet metal parts are placed on it and stretched, a suction force is generated to firmly hold the sheet metal parts. A sliding groove 45 is opened inside the mold body 2. The sliding groove 45 provides movement space for the placement plate 43. One end of the spring 42 is fixedly connected inside the mold body 2. The placement plate 43 is slidably connected inside the sliding groove 45. The spring 42 can automatically reset the placement plate 43 located inside the sliding groove 45 after stretching. One end of the telescopic rod 41 is fixedly connected to the bottom of the placement plate 43. The telescopic rod 41 and the spring 42 work together to provide reliable support and power transmission for the movement of the placement plate 43.

[0032] Working principle: Before stretching, the required mold body 2 is placed inside the mounting bracket 31. Then, the hydraulic rod 32 serves as the power source, outputting stable and controllable hydraulic power to drive the clamping arm 33 to rotate around the support rod 37. The clamping arms 33 on both sides move synchronously, causing the limiting block 39 on the side wall of the clamping block 38 to enter the limiting groove 5, thus firmly clamping the mold body 2. At the same time, under the linkage of the connecting rod 34, the limiting sleeve 35 slides along the limiting rod 36, ensuring the height synchronization and trajectory accuracy of the movement of the clamping arms 33 on both sides. After the mold is fixed, the sheet metal part is... The sheet metal part is placed on top of the placement plate 43, and then the top mold presses down, causing the sheet metal part to move downward under force. The placement plate 43 enters the slide groove 45, which in turn compresses the telescopic rod 41 and the spring 42. During this process, the air inside the suction cup 44 is squeezed, forming a negative pressure, which generates a strong suction force to firmly adhere the sheet metal part. After stretching, the spring 42 returns to its original position using its own elastic potential energy, causing the placement plate 43 to move upward. The telescopic rod 41 extends simultaneously, pushing the processed sheet metal part upward so that it is detached from the bottom mold body 2. The operator can then easily remove the part by overcoming the suction force of the suction cup 44.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drawing die for sheet metal parts, comprising a base (1), characterized in that: The base (1) is provided with a mold body (2) on the top, a fixing component (3) is provided at the bottom of the mold body (2), and a picking component (4) is provided inside the mold body (2); The fixing component (3) includes a mounting bracket (31) fixedly connected to the top of the base (1). A hydraulic rod (32) is provided inside the mounting bracket (31). Both ends of the hydraulic rod (32) are rotatably connected to clamping arms (33). A connecting rod (34) is rotatably connected to the middle of the clamping arm (33). One end of the connecting rod (34) is rotatably connected to a limiting sleeve (35). A limiting rod (36) is slidably connected inside the limiting sleeve (35). Support rods (37) are fixedly connected to the left and right side walls of the mounting bracket (31). Clamping blocks (38) are rotatably connected to the top of the clamping arms (33). Limiting blocks (39) are fixedly connected to the opposite side walls of the clamping blocks (38).

2. The drawing die for sheet metal parts according to claim 1, characterized in that: The picking component (4) includes multiple telescopic rods (41) fixedly connected inside the mold body (2). Each telescopic rod (41) is fitted with a spring (42). One end of each spring (42) is fixedly connected to a placement plate (43). A suction cup (44) is fixedly connected to the top of the placement plate (43). A sliding groove (45) is opened inside the mold body (2).

3. The drawing die for sheet metal parts according to claim 1, characterized in that: Limiting grooves (5) are provided on the left and right side walls of the mold body (2).

4. The drawing die for sheet metal parts according to claim 1, characterized in that: The clamping arm (33) is rotatably connected to one end of the support rod (37), and the limiting rod (36) is fixedly connected inside the mounting frame (31).

5. The drawing die for sheet metal parts according to claim 1, characterized in that: The clamping block (38) is slidably connected to the top of the mounting bracket (31), and the limiting block (39) is slidably connected inside the limiting groove (5).

6. A sheet metal stretching die according to claim 1, characterized in that: The hydraulic rod (32) is located below the limiting rod (36), and the hydraulic rod (32) is suspended in the air.

7. The drawing die for sheet metal parts according to claim 2, characterized in that: One end of the spring (42) is fixedly connected to the inside of the mold body (2).

8. The drawing die for sheet metal parts according to claim 2, characterized in that: The placement plate (43) is slidably connected inside the groove (45), and one end of the telescopic rod (41) is fixedly connected to the bottom of the placement plate (43).

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