A cold stamping die for a high-strength steel B-pillar of an automobile side panel

Abstract

This utility model relates to the field of lifting bracket technology, specifically a cold stamping die for high-strength steel B-pillars of automobiles. The utility model includes a base, a support frame, two hydraulic actuators, and an upper die. A lifting device is provided on one side of the base. The lifting device includes a lower die, the bottom of which is fixedly connected to the base. A lifting plate is slidably connected inside the lower die. Two top blocks are fixedly connected to the bottom of the lifting plate. An electric push rod is fixedly connected to the bottom of each top block. A fixing block is fixedly connected to the outer side of the electric push rod. An L-shaped plate is fixedly connected to one side of each fixing block, and one side of the L-shaped plate is fixedly connected to the base. This invention solves the problem of traditional cold stamping dies for high-strength steel B-pillars of automobiles, where the ejection system relies solely on the concentrated force of a single ejector pin to eject the formed workpiece, easily leading to localized stress concentration in the high-strength steel workpiece, resulting in bulging deformation or cracking defects.

Description

Technical Field

[0001] This utility model relates to the field of lifting bracket technology, and in particular to a high-strength steel cold stamping die for a car side B-pillar. Background Technology

[0002] The high-strength steel cold stamping die for the B-pillar of a car side panel is a "steel stamp" specially used to manufacture the most critical support pillar (B-pillar) on the side of a car. It uses tremendous force to "press" a piece of ultra-high strength steel plate into a complex three-dimensional shape at room temperature in one go.

[0003] In the existing technology, the cold stamping die for high-strength steel B-pillar of automobile side panel relies on the concentrated force of a single ejector pin to eject the formed workpiece, which can easily lead to local stress concentration in the high-strength steel formed workpiece, resulting in convex deformation or cracking defects. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology of cold stamping molds for high-strength steel B-pillars of automobiles, where the ejection system relies on the concentrated force of a single ejector pin to eject the formed workpiece, which easily leads to local stress concentration in the high-strength steel formed workpiece, resulting in ejection deformation or cracking defects. Therefore, this utility model proposes a cold stamping mold for high-strength steel B-pillars of automobiles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cold stamping die for a high-strength steel B-pillar of an automobile side panel, comprising a base, a support frame, two hydraulic actuators and an upper die, wherein a lifting device is provided on one side of the base, the lifting device includes a lower die, the bottom end of the lower die is fixedly connected to the base, a lifting plate is slidably connected inside the lower die, two top blocks are fixedly connected to the bottom end of the lifting plate, an electric push rod is fixedly connected to the bottom end of the top block, a fixing block is fixedly connected to the outside of the electric push rod, an L-shaped plate is fixedly connected to one side of the two fixing blocks, and one side of the L-shaped plate is fixedly connected to the base.

[0006] The effect achieved by the above components is that the electric push rod starts and drives the top block to move, so that the lifting plate moves away from the lower mold.

[0007] Preferably, two limiting rods are fixedly connected to one side of the lifting plate, and a limiting frame is slidably connected to the arc surface of the two limiting rods. The outer side of the limiting frame is fixedly connected to the lower mold.

[0008] The effect achieved by the above components is that the lifting plate moves and drives the limiting rod to slide on the limiting frame, thus preventing the lifting plate from shifting its position during movement.

[0009] Preferably, the bottom end of the lifting plate is fixedly connected to two sliding rods, and the arc surface of the sliding rods is slidably connected to a limiting cylinder.

[0010] The effect achieved by the above components is that the movement of the lifting plate causes the sliding rod to slide on the limiting cylinder, thus preventing the lifting plate from shifting its position during movement.

[0011] Preferably, one end of each of the two limiting cylinders is fixedly connected to a support plate, and one side of the support plate is fixedly connected to an L-shaped plate.

[0012] The effect achieved by the above components is that the support plate is fixed on the L-shaped plate, thereby fixing the position of the limiting cylinder.

[0013] Preferably, two fixing rods are fixedly connected to one side of the L-shaped plate, and a stabilizing frame is fixedly connected to one end of the two fixing rods. The inner side of the stabilizing frame is fixedly connected to two limiting cylinders.

[0014] The effect achieved by the above components is that the fixing rod is fixed on the L-shaped plate, so that the stabilizing frame is stable in the position of the limiting cylinder.

[0015] Preferably, a lifting device is provided on one side of the base. The lifting device includes two U-shaped plates, one side of which is fixedly connected to the base. Two lifting holes are provided on one side of each U-shaped plate.

[0016] The effect achieved by the above components is that the lifting holes are made on the U-shaped plate, and the U-shaped plate is fixed on the base.

[0017] Preferably, a force-bearing rod is fixedly connected to the inner side of the U-shaped plate, and two limiting rings are fixedly connected to the arc surface of the force-bearing rod.

[0018] The aforementioned components achieve the following effect: the limiting ring is fixed to the force-bearing rod, and the force-bearing rod is fixed to the U-shaped plate.

[0019] Preferably, the arc surface of the force-bearing rod is rotatably connected to an adjusting plate, and a gripping rod is fixedly connected to the inner side of the adjusting plate.

[0020] The effect achieved by the above components is that the movement of the gripping rod causes the adjusting plate to rotate on the force-bearing rod.

[0021] Preferably, the arc surface of the grip bar is fixedly connected with an anti-slip sleeve.

[0022] The effect achieved by the above components is to increase friction by implementing anti-slip sleeves.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] In this invention, when the workpiece needs to be ejected, the electric push rod is activated by the lifting device to drive the top block to lift the lifting plate upward, so that the workpiece is completely separated from the lower mold. The lifting device solves the problem that the traditional cold stamping mold for high-strength steel B-pillar of automobile side panel relies on the concentrated force of a single ejector pin to eject the workpiece, which easily leads to local stress concentration in the high-strength steel workpiece, resulting in convex deformation or cracking defects.

[0025] In this invention, when the mold needs to be moved, the anti-slip sleeve is held and pulled continuously to rotate the adjusting plate until it is pressed against the base. The base can then be lifted smoothly by continuing to lift it. Alternatively, the mold can be hoisted by connecting a lifting rope with a lifting ring. The lifting device solves the problem that traditional cold stamping molds for high-strength steel B-pillars of automobiles are usually designed to be smooth and flat on the outside, resulting in fewer points of leverage and making them inconvenient to move. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the lifting structure of this utility model;

[0028] Figure 3 This is a partial structural diagram of the three-dimensional structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the lifting structure of this utility model;

[0030] Figure 5 This is a cross-sectional schematic diagram of the lifting structure of this utility model.

[0031] Legend: 1. Base; 2. Lifting device; 201. Lower mold; 202. Lifting plate; 203. Limiting frame; 204. Top block; 205. Electric push rod; 206. Fixing block; 207. L-shaped plate; 208. Limiting rod; 209. Sliding rod; 210. Limiting cylinder; 211. Stabilizing frame; 212. Support plate; 213. Fixing rod; 3. Lifting device; 31. U-shaped plate; 32. Lifting hole; 33. Force rod; 34. Limiting ring; 35. Adjusting plate; 36. Holding rod; 37. Anti-slip sleeve; 4. Support frame; 5. Hydraulic device; 6. Upper mold. Detailed Implementation

[0032] Reference Figure 1 and Figure 3 As shown, this utility model provides a technical solution: a cold stamping mold for high-strength steel B-pillar of automobile side, including a base 1, a support frame 4, two hydraulic devices 5 and an upper mold 6. A lifting device 2 is provided on one side of the base 1, and a pulling device 3 is provided on one side of the base 1.

[0033] The specific setup and function of its lifting device 2 and pulling device 3 will be explained below.

[0034] Reference Figure 2 and Figure 5 As shown in this embodiment: the lifting device 2 includes a lower mold 201, the bottom end of which is fixedly connected to the base 1. A lifting plate 202 is slidably connected inside the lower mold 201. Two top blocks 204 are fixedly connected to the bottom end of the lifting plate 202. An electric push rod 205 is fixedly connected to the bottom end of the top blocks 204. A fixing block 206 is fixedly connected to the outer side of the electric push rod 205. An L-shaped plate 207 is fixedly connected to one side of the two fixing blocks 206. One side of the L-shaped plate 207 is fixedly connected to the base 1. This achieves the effect of the electric push rod 205 driving the top blocks 204 to move, causing the lifting plate 202 to move away from the lower mold 201. Two limiting rods 208 are fixedly connected to one side of the lifting plate 202. A limiting frame 203 is slidably connected to the arc surface of the two limiting rods 208. The outer side of the limiting frame 203 is fixedly connected to the lower mold 201. The lifting plate 202 moves, causing the limiting rod 208 to slide on the limiting frame 203, thus preventing the lifting plate 202 from shifting position during movement. Two sliding rods 209 are fixedly connected to the bottom end of the lifting plate 202, and the arc surface of the sliding rods 209 is slidably connected to the limiting cylinders 210. This also prevents the lifting plate 202 from shifting position during movement. A support plate 212 is fixedly connected to one end of each of the two limiting cylinders 210, and one side of the support plate 212 is fixedly connected to the L-shaped plate 207. This fixes the supporting plate 212 to the L-shaped plate 207, thus fixing the position of the limiting cylinders 210. Two fixing rods 213 are fixedly connected to one side of the L-shaped plate 207, and one end of each fixing rod 213 is fixedly connected to a stabilizing frame 211. The inner side of the stabilizing frame 211 is fixedly connected to the two limiting cylinders 210. This achieves the effect of fixing the fixing rod 213 to the L-shaped plate 207, thus stabilizing the position of the stabilizing frame 211 on the limiting cylinder 210.

[0035] Reference Figure 4As shown in this embodiment: the lifting device 3 includes two U-shaped plates 31, one side of which is fixedly connected to the base 1. Two lifting holes 32 are provided on one side of each U-shaped plate 31. This achieves the effect of the lifting holes 32 being located on the U-shaped plates 31, and the U-shaped plates 31 being fixed to the base 1. A force-bearing rod 33 is fixedly connected to the inner side of the U-shaped plate 31, and two limiting rings 34 are fixedly connected to the arc surface of the force-bearing rod 33. This achieves the effect of the limiting rings 34 being fixed to the force-bearing rod 33, and the force-bearing rod 33 being fixed to the U-shaped plate 31. An adjusting plate 35 is rotatably connected to the arc surface of the force-bearing rod 33, and a gripping rod 36 is fixedly connected to the inner side of the adjusting plate 35. This achieves the effect of the gripping rod 36 moving to drive the adjusting plate 35 to rotate on the force-bearing rod 33. An anti-slip sleeve 37 is fixedly connected to the arc surface of the gripping rod 36. This achieves the effect of the anti-slip sleeve 37 increasing friction.

[0036] Working principle: When the formed workpiece needs to be ejected via the lifting device 2, the operator first connects the control system to the electric push rod 205 and starts the electric push rod 205. The output end of the electric push rod 205 drives the top block 204 to move, pushing the lifting plate 202 to move away from the lower mold 201, thereby causing the formed workpiece located in the lower mold 201 to begin to detach. Under the continuous output of the electric push rod 205, the lifting plate 202 continues to move until the workpiece is completely detached from the lower mold 201. During the entire ejection process, the slide rod 209 slides along the limiting cylinder 210, while the limiting rod 208 moves within the limiting frame 203, together playing a guiding and limiting role, preventing the lifting plate 202 from shifting position during movement. Through the lifting device 2, the problem of traditional cold stamping molds for high-strength steel B-pillars of automobiles, where the ejection system relies solely on the concentrated force of a single ejector pin to eject the formed workpiece, is easily caused by local stress concentration in the high-strength steel formed workpiece, resulting in bulging deformation or cracking defects.

[0037] When the mold needs to be moved using the lifting device 3, the operator first holds the anti-slip sleeve 37 and applies a continuous pulling force. This pulling force is transmitted through the gripping rod 36, causing the adjusting plate 35 to rotate around the force-bearing rod 33 until the adjusting plate 35 contacts and abuts against the base 1. At this point, the operator can continue to hold the anti-slip sleeve 37 and apply a pulling force upward (i.e. away from the placement surface). This pulling force is transmitted to the base 1 through the force-bearing rod 33 and the U-shaped plate 31 in sequence, thereby lifting the base 1 smoothly. Alternatively, a lifting rope can be used to fix the base 1 to the lifting ring to lift it away, completing the handling operation. The lifting device 3 solves the problem that traditional automotive side B-pillar high-strength steel cold stamping molds are usually designed to be relatively smooth and flat on the outside, resulting in fewer points of force and making them inconvenient to handle.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A cold stamping die for a high-strength steel B-pillar of an automobile side panel, comprising a base (1), a support frame (4), two hydraulic actuators (5), and an upper die (6), characterized in that: A lifting device (2) is provided on one side of the base (1). The lifting device (2) includes a lower mold (201). The bottom end of the lower mold (201) is fixedly connected to the base (1). A lifting plate (202) is slidably connected inside the lower mold (201). Two top blocks (204) are fixedly connected to the bottom end of the lifting plate (202). An electric push rod (205) is fixedly connected to the bottom end of the top block (204). A fixing block (206) is fixedly connected to the outside of the electric push rod (205). An L-shaped plate (207) is fixedly connected to one side of the two fixing blocks (206). One side of the L-shaped plate (207) is fixedly connected to the base (1).

2. The high-strength steel cold stamping die for a car side B-pillar according to claim 1, characterized in that: Two limiting rods (208) are fixedly connected to one side of the lifting plate (202). The arc surfaces of the two limiting rods (208) are slidably connected to a limiting frame (203). The outer side of the limiting frame (203) is fixedly connected to the lower mold (201).

3. The high-strength steel cold stamping die for a car side B-pillar according to claim 2, characterized in that: The bottom end of the lifting plate (202) is fixedly connected to two sliding rods (209), and the arc surface of the sliding rods (209) is slidably connected to a limiting cylinder (210).

4. The high-strength steel cold stamping die for a car side B-pillar according to claim 3, characterized in that: One end of each of the two limiting cylinders (210) is fixedly connected to a support plate (212), and one side of the support plate (212) is fixedly connected to an L-shaped plate (207).

5. The high-strength steel cold stamping die for a car side B-pillar according to claim 4, characterized in that: Two fixing rods (213) are fixedly connected to one side of the L-shaped plate (207), and a stabilizing frame (211) is fixedly connected to one end of the two fixing rods (213). The inner side of the stabilizing frame (211) is fixedly connected to two limiting cylinders (210).

6. The high-strength steel cold stamping die for a car side B-pillar according to claim 1, characterized in that: The base (1) is provided with a lifting device (3) on one side. The lifting device (3) includes two U-shaped plates (31). One side of the two U-shaped plates (31) is fixedly connected to the base (1). Two lifting holes (32) are opened on one side of the U-shaped plates (31).

7. The high-strength steel cold stamping die for a car side B-pillar according to claim 6, characterized in that: A force-bearing rod (33) is fixedly connected to the inner side of the U-shaped plate (31), and two limiting rings (34) are fixedly connected to the arc surface of the force-bearing rod (33).

8. The high-strength steel cold stamping die for a car side B-pillar according to claim 7, characterized in that: The arc surface of the force-bearing rod (33) is rotatably connected to an adjusting plate (35), and a gripping rod (36) is fixedly connected to the inner side of the adjusting plate (35).

9. A cold stamping die for a high-strength steel B-pillar of an automobile side panel according to claim 8, characterized in that: The arc surface of the grip rod (36) is fixedly connected with an anti-slip sleeve (37).

Images