Tile nosing punching and shearing die

Abstract

The utility model discloses a kind of tile eaves board punch shear die, including upper die holder and lower die holder;Its characterized in that upper die holder is fixedly connected with rectangular punch and the cutter located at the both sides of rectangular punch, rectangular punch and the lower end surface of two cutters are equal height;Lower die holder is fixedly connected with shearing lower die and material withdrawal block, material withdrawal block is located above shearing lower die, lower die holder and material withdrawal block are both provided with central hole, shearing lower die is provided with forming hole, the inner side surface of two cutters corresponds with the both outer side surfaces of shearing lower die, the width of material withdrawal block directly below two cutters is less than the interval of the inner side surface of two cutters;Material withdrawal block lower part is provided with through slot located in front-back direction, positioning block located in the front of forming hole is fixed in through slot.The utility model can be continuously formed, with the advantage of high production efficiency, and accurate positioning, can guarantee product precision.

Description

Technical Field

[0001] This utility model relates to a punching and shearing die for a nose plate, and more particularly to a punching and shearing die for a nose plate on the back of a composite brake shoe of a railway locomotive. Background Technology

[0002] like Figure 4 As shown, the nose plate 19 on the back of the composite brake shoe of railway locomotive needs to be cut and formed at the middle and outer sides of both ends of the workpiece. At present, single-piece processing is mostly carried out using molds. Each workpiece needs to be turned around and formed twice, which makes continuous forming impossible, resulting in low processing efficiency and difficulty in accurate positioning during processing, affecting dimensional accuracy. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned shortcomings of the existing technology by providing a tile nose plate punching and shearing die that can perform continuous forming, has the advantages of high production efficiency, and is accurately positioned to ensure product precision.

[0004] To achieve the above objectives, this utility model provides a tile nose plate punching and shearing die, comprising an upper die base and a lower die base; characterized in that the upper die base is fixedly connected to a rectangular punch and cutters located on both sides of the rectangular punch, the lower end faces of the rectangular punch and the two cutters being at the same height; the lower die base is fixedly connected to a shearing lower die and an ejector block, the ejector block being located above the shearing lower die, both the lower die base and the ejector block having a central hole, the shearing lower die having a forming hole, the inner surfaces of the two cutters corresponding to the two outer surfaces of the shearing lower die, the width of the ejector block directly below the two cutters being less than the distance between the inner surfaces of the two cutters; the lower part of the ejector block has a through groove in the front-back direction, and a positioning block located in front of the forming hole is fixedly installed in the through groove.

[0005] In use, the workpiece is inserted into the through slot and placed on the lower shearing die. The front end of the workpiece contacts the positioning block. The upper die base drives the rectangular punch and two cutters downwards. In conjunction with the lower shearing die, the punching of the central square hole and the shearing of both sides can be completed simultaneously. When the upper die base returns, the ejector block can block the workpiece and automatically eject it, completing one forming. After that, the rear edge of the formed rectangular hole contacts and is positioned with the positioning block, and a second punching and shearing can be performed. This cycle can be repeated to form continuously. After the workpiece is formed multiple times, it is cut off along the front and back of the rectangular hole towards the center line to obtain the tile nose plate. This utility model can perform continuous forming, has the advantages of high production efficiency, and accurate positioning can ensure product precision. As a further improvement of this utility model, the lower die base is fixedly connected to the front and rear baffles and the left and right side limiting plates. The shearing lower die is placed between the front and rear baffles and the left and right side limiting plates. The upper end of the shearing lower die is at the same height as the front and rear baffles. Both the front and rear baffles are provided with set screws to fix the shearing lower die. The positioning block is fixedly connected to the rear baffle or the upper end of the shearing lower die. This facilitates the fixing and replacement of the shearing lower die and improves its versatility. As a further improvement of this utility model, the lower die base on the outer side of the shearing die is provided with an inclined discharge groove; this facilitates automatic discharge of the sheared material and improves work efficiency. In summary, this utility model can perform continuous molding, has the advantages of high production efficiency, and is accurate in positioning, which can ensure product precision. Attached Figure Description

[0006] Figure 1 This is a front view of an embodiment of the present utility model.

[0007] Figure 2 for Figure 1 AA sectional view.

[0008] Figure 3 This is the front view of the workpiece after it has been fully formed.

[0009] Figure 4 This is a front view of the nose plate on the back of the composite brake shoe of a railway locomotive. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings.

[0011] like Figures 1 to 2 As shown, this embodiment of a tile nose plate punching and shearing die includes an upper die base 6 and a lower die base 1. The upper die base 6 is bolted to a rectangular punch 5 and two cutting blades 4 located on either side of the rectangular punch. The lower end faces of the rectangular punch 5 and the two cutting blades 4 are at the same height. The lower die base 1 is integrally fixed to a front baffle 7, a rear baffle 8, and left and right side limiting plates 9. The shearing lower die 2 is placed between the front baffle 7, the rear baffle 8, and the left and right side limiting plates 9. The upper end of the shearing lower die 2 is at the same height as the front baffle 7 and the rear baffle 8. Both the front baffle 7 and the rear baffle 8 are provided with set screws 10 for fixing the shearing lower die 2. The lower die base 1 is fixed to the front and rear end plates by screws 11. The ejector block 3 is located above the shearing die 2. Both the lower die base 1 and the ejector block 3 are provided with a central hole. The shearing die 2 is provided with a rectangular forming hole 12, which corresponds to the rectangular punch 5. The inner sides of the two cutters 4 correspond to the two outer sides of the shearing die 2. The width of the ejector block 3 directly below the two cutters 4 is less than the distance between the inner sides of the two cutters 4. The lower part of the ejector block 3 is provided with a through groove 13 in the front-back direction. A positioning block 14 located in front of the forming hole 12 is fixed in the through groove 13. The positioning block 14 is fixed to the upper end of the rear baffle 8. The lower die base 1 on the outer side of the shearing die 2 is provided with an inclined discharge groove 16.

[0012] The width of the through groove 13 matches the width of the workpiece. In use, the workpiece 17 is inserted into the through groove 13 and placed on the lower shearing die 2. The front end of the workpiece 17 contacts the positioning block 14. The upper die base 6 drives the rectangular punch 5 and two cutters 4 downwards. Working in conjunction with the lower shearing die 2, it simultaneously completes the punching of the central square hole and the shearing of both sides. The punched material and the sheared material are automatically discharged from the central hole of the lower die base 1 and the discharge groove 16, respectively. When the upper die base 6 returns, the ejector block 3 blocks the workpiece 17, automatically ejecting it and completing one forming operation. Afterwards, the rear edge of the formed rectangular hole contacts and is positioned with the positioning block 14, allowing for a second punching and shearing operation. This cycle can be repeated for continuous forming. After multiple forming operations, the workpiece can be processed as follows: Figure 3 As shown, the workpiece 17 is cut along the center line from the front and back of each rectangular hole 18 to obtain the tile nose plate; this utility model can be continuously formed, has the advantage of high production efficiency, and the front, back and left and right sides are accurately positioned to ensure product accuracy. The set screw 10 facilitates the fixing and replacement of the lower shearing mold 2, improving its versatility.

Claims

1. A die for punching and shearing a tile nose plate, comprising an upper die base and a lower die base; characterized in that... The upper die base is fixedly connected to a rectangular punch and cutters located on both sides of the rectangular punch. The lower end faces of the rectangular punch and the two cutters are at the same height. The lower die base is fixedly connected to a shearing die and an ejector block. The ejector block is located above the shearing die. Both the lower die base and the ejector block are provided with a central hole. The shearing die is provided with a forming hole. The inner sides of the two cutters correspond to the two outer sides of the shearing die. The width of the ejector block directly below the two cutters is smaller than the distance between the inner sides of the two cutters. The lower part of the ejector block is provided with a through groove in the front-to-back direction. A positioning block located in front of the forming hole is fixed in the through groove.

2. The tile nose plate punching and shearing die as described in claim 1, characterized in that... The lower mold base is fixedly connected to the front and rear baffles and the left and right side limiting plates. The shearing lower mold is placed between the front and rear baffles and the left and right side limiting plates. The upper end of the shearing lower mold is at the same height as the front and rear baffles. Both the front and rear baffles are provided with set screws to fix the shearing lower mold. The positioning block is fixedly connected to the rear baffle or the upper end of the shearing lower mold.

3. A tile nose plate punching and shearing die as described in claim 1 or 2, characterized in that... The lower die base on the outer side of the shearing die is provided with an inclined discharge groove.

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