CN102728723B - Nut hot stamping die - Google Patents

Abstract

A hot stamping die for nuts comprises a die shank, an upper die plate, an upper die base plate, an upper fixing plate, a rubber pad, a stripping base plate, an upper die core fixing plate with an upper die core, a lower die plate, a lower die base plate, a lower fixing plate and a lower die sleeve with a lower die core, wherein the upper die core is provided with a hexagonal hole and is matched with an upper male die in a hole sliding manner, the upper end of the upper male die penetrates through the stripping base plate and the rubber pad and then is positioned in a first hole of the upper male die in the upper fixing plate to limit the upper male, the upper end is in sliding fit with the first hole, the end face of the upper end is abutted to the lower end face of an ejector rod which penetrates through the die handle and the upper die base plate and enters the first hole, the ejector rod is in sliding fit with the die handle and a second hole in the upper die base plate, the ejector rod penetrates through the second hole, the lower end of the upper male die is provided with a guide hole and a first forming end, the lower die core is provided with a second forming end, and a lower die positioning guide column which penetrates out of the second forming end and is coaxial with the lower die core is composed of a positioning column and a guide column which is in sliding fit with the guide hole and has a diameter smaller. The mold can produce the inner connecting nut.

Description

Nut hot stamping die

technical field

The invention relates to the technical field of hot stamping dies, in particular to a nut hot stamping die.

Background technique

At present, there is a kind of nut called an inner connection nut. The inner connection nut belongs to a hexagonal nut. Copper rods are used as raw materials. During processing, cutting, drilling, cutting and finishing processes are required. This processing method is cumbersome and consumes raw materials. Large, low production efficiency, and the nut hot stamping die has the advantages of simple processing, less raw materials, and high production efficiency, but there is no nut hot stamping die for producing the inner connection nut at present.

Contents of the invention

The technical problem to be solved by the present invention is to provide a nut hot stamping die for producing inner connecting nuts.

The technical scheme of the present invention is that the nut hot stamping die of the present invention comprises a mold handle, an upper mold plate, an upper mold backing plate, an upper fixing plate, a rubber pad, a stripping backing plate, and an upper mold core fixed with an upper mold core. Plate, lower formwork, lower mold backing plate, lower fixing plate, lower mold cover with lower mold core, the upper mold plate, upper mold backing plate, upper fixing plate, rubber pad, stripping backing plate, upper mold core fixed The plates are connected sequentially from top to bottom, and the lower template, lower mold backing plate, lower fixing plate, and lower mold cover are sequentially connected from bottom to top, and the upper mold core is provided with hexagonal holes; and the six The side-shaped hole is fitted with an upper punch, and the upper end of the upper punch passes through the stripping plate and the rubber pad and is located in the first hole of the upper punch set on the upper fixing plate for axially limiting the upper punch. The upper end of the upper punch is in sliding fit with the first hole, and the end face of the upper end of the upper punch can be connected with the lower end face of the ejector rod that passes through the mold handle and the backing plate of the upper die to enter the first hole. In contrast, the ejector rod is slidingly matched with the second hole provided in the mold handle and the backing plate of the upper die for the ejector rod to pass through, and the lower end of the upper punch is sequentially provided with a guide hole and a a first forming end for forming the first spherical end of the nut; the lower core is provided with a second forming end for forming the second spherical end of the nut, passing through the second forming end of the lower core The positioning guide column of the lower mold that is external and coaxial with the lower mold core is composed of a positioning column and a guide column formed on the top of the positioning column that can be slidably fitted with the guide hole and has a diameter smaller than the positioning column; it also includes a guide column. The upper end is located in the mounting hole for installing the guide post on the upper formwork and the upper end is slidingly fitted with the mounting hole, the lower end of the guide post is located in the mounting hole for installing the guide post on the upper die core fixing plate and the lower end is sliding with the mounting hole Cooperate, the upper template, the upper mold backing plate, and the upper fixing plate are positioned by the guide post and then fastened with the inner hexagonal screw. Snug fit in the mounting holes for the guide posts.

The working principle of the present invention is that copper tubes are used as raw materials, and the upper mold plate, upper mold backing plate, upper fixing plate, rubber pad, stripping backing plate, and upper mold core fixing plate are sequentially connected from top to bottom to form an upper mold part, the lower mold plate, lower mold backing plate, lower fixing plate, and lower mold sleeve are connected in sequence from bottom to top to form the lower mold part. Insert it into the second molding end of the lower mold core, then, the upper mold part and the lower mold part are molded, the guide column part on the upper part of the positioning guide column of the lower mold slides into the guide hole, and the top of the copper tube enters the upper punch first The first molding end at the lower end then pushes the upper punch to move upwards to the top dead center, and the rubber pad is compressed during the mold closing process, so that the stripper plate and the upper mold core fixing plate can always move upwards during the mold closing process. After the upper punch stops moving upwards, the clamping will continue, and the copper tube will be further extruded, so that in the forming cavity formed by the first forming end, the hexagonal hole, the second forming end, and the positioning guide column of the lower die, The copper pipe is extruded into the required shape, that is, the inner connection nut. After the mold is opened, the ejector rod pushes the upper punch, and the upper punch pushes the product out, thereby completing the demoulding of the product.

After adopting the above-mentioned structure, the present invention has the following advantages compared with the prior art: in combination with the above-mentioned technical scheme and working principle, it can be known that the mutual coordination and cooperation of various parts can realize the hot stamping of the inner connecting nut, and except for the nuts of the prior art In addition to the advantages of simple processing, less raw materials and high production efficiency, hot stamping dies also have the advantages of compact structure, simplicity and reliability.

Description of drawings

Fig. 1 is the structure schematic diagram when the nut hot stamping die of the present invention is clamped.

Fig. 2 is a structural schematic view of the nut hot stamping die of the present invention when the die is opened.

As shown in the figure, 1. mold handle, 2. upper template, 3. upper mold backing plate, 4. upper fixing plate, 5. rubber pad, 6. stripping backing plate, 7. upper mold core, 8. upper mold Core fixing plate, 9, lower template, 10, lower mold backing plate, 11, lower fixing plate, 12, lower mold core, 13, lower mold cover, 14, upper punch, 15, first hole, 16, ejection Rod, 17, the second hole, 18, guide hole, 19, the first forming end, 20, the second forming end, 21, lower mold positioning guide post, 21.1, positioning post, 21.2, guide post, 22, lower die guide Column, 23, guide sleeve, 24, guide column, 25, hexagon socket head screw, 26, combination screw, 27, product.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing.

Nut hot stamping die of the present invention, it comprises die handle 1, upper template 2, upper mold backing plate 3, upper fixing plate 4, rubber pad 5, stripping backing plate 6, the upper mold core that is provided with upper mold core 7 is fixed Plate 8, lower template 9, lower mold backing plate 10, lower fixing plate 11, lower mold cover 13 provided with lower mold core 12. The upper template 2, the upper mold backing plate 3, the upper fixing plate 4, the rubber pad 5, the stripping backing plate 6, and the upper mold core fixing plate 8 are sequentially connected from top to bottom. The lower template 9, the lower mold backing plate 10, the lower fixing plate 11, and the lower mold cover 13 are sequentially connected from bottom to top. The upper mold core 7 is provided with a hexagonal hole, and an upper punch 14 is slidably matched with the hexagonal hole. The upper end of the upper punch 14 passes through the stripper plate 6 and the rubber pad 5 and is located in the first hole 15 provided on the upper fixing plate 4 for axially limiting the upper punch 14 . The upper end of described upper punch 14 is slip fit with described first hole 15, and the end face of the upper end of described upper punch 14 can be with a pass through die handle 1, upper die backing plate 3 to enter described first hole 15. The lower end face of the ejector rod 16 in the middle is against. The ejector rod 16 is slidingly matched with the second hole 17 provided in the mold handle 1 and the upper die backing plate 3 through which the ejector rod 16 passes. The lower end of the upper punch 14 is sequentially provided with a guide hole 18 and a first forming end 19 for forming the first spherical end of the nut from top to bottom. The lower mold core 12 is provided with a second forming end 20 for forming the second spherical end of the nut, a lower mold that passes out of the second forming end 20 of the lower mold core 12 and is coaxial with the lower mold core 12 The positioning guide post 21 is composed of a positioning post 21.1 and a guide post 21.2 formed on the top of the positioning post 21.1, which can be slidably fitted with the guide hole 18 and whose diameter is smaller than that of the positioning post 21.1. Both Figures 1 and 2 depict a product 27 .

In this example, the lower template 9 is equipped with a lower mold guide post 22, and the upper template 2 is equipped with a guide sleeve 23 that is slidingly fitted with the lower mold guide post 22; The annular hole where the protrusion fits, a part of the mold handle 1 passes through the upper template 2 upwards, the annular protrusion matches the annular hole, and the upper mold backing plate 3 presses the annular protrusion into the annular hole, so that the mold handle 1 is completed Installation, the mold handle 1 axially cannot move; the nut hot stamping die of the present invention also includes a guide post 24, the upper end of the guide post 24 is positioned in the mounting hole for installing the guide post 24 on the upper template 2 and the upper end slides with the mounting hole Cooperate, the lower end of guide post 24 is positioned at the installation hole that is used to install guide post 24 on the upper mold core fixing plate 8 and the lower end is slippery fit with this installation hole, described upper template 2, upper mold backing plate 3, upper fixing plate 4 Fasten with hexagon socket head cap screws 25 after the guide post 24 is positioned. The mounting holes are a slip fit. In the same way, after the lower template 9, the lower mold backing plate 10, the lower fixing plate 11, and the lower mold cover 13 are also positioned by other guide pillars 24, they are fastened together with hexagon socket head screws 25; the rubber pad 5 , the stripping backing plate 6, and the upper mold core fixing plate 8 are pressed on the upper fixing plate 4 through the combination screw 26, and the combination screw 26 can move upwards, so that during the mold closing process, the rubber pad 5 is squeezed, and the rubber The whole formed by the pad 5, the stripping backing plate 6 and the upper mold core fixing plate 8 can move upward as a whole.

Claims (1)

1. A nut hot stamping die, is characterized in that: it comprises die handle (1), last formwork (2), upper die backing plate (3), last fixed plate (4), rubber pad (5), stripper Backing plate (6), upper mold core fixing plate (8) provided with upper mold core (7), lower template (9), lower mold backing plate (10), lower fixing plate (11), lower mold core The lower mold cover (13) of (12), described upper template (2), upper mold backing plate (3), upper fixing plate (4), rubber pad (5), stripping backing plate (6), upper mold The core fixing plate (8) is connected sequentially from top to bottom, and the lower template (9), lower mold backing plate (10), lower fixing plate (11), and lower mold cover (13) are connected sequentially from bottom to top , the upper mold core (7) is provided with a hexagonal hole; an upper punch (14) is slidably matched with the hexagonal hole, and the upper end of the upper punch (14) passes through the stripping backing plate (6) , the rubber pad (5) is located behind the upper fixing plate (4) in the first hole (15) for axially limiting the upper punch (14), the upper end of the upper punch (14) is in contact with the Described first hole (15) slip fits, and the end face of the upper end of described upper punch (14) can be with a pass through mold handle (1), upper mold backing plate (3) to enter described first hole (15). ) against the lower end surface of the ejector rod (16), the ejector rod (16) is set in the mold handle (1) and the upper mold backing plate (3) for the ejector rod (16) to pass through The second hole (17) is slip fit, and the lower end of the upper punch (14) is sequentially provided with a guide hole (18) and a first forming end (19) for forming the first spherical end of the nut from top to bottom. ); the lower die core (12) is provided with the second forming end (20) for the second spherical end of the molding nut, and passes out of the second forming end (20) of the lower die core (12) and The lower mold positioning guide post (21) coaxial with the lower mold core (12) is formed on the top of the positioning post (21.1) by the positioning post (21.1) and can be slidably fitted with the guide hole (18) and has a diameter smaller than the positioning post ( 21.1) guide column (21.2) constitutes; It also comprises guide column (24), and the upper end of guide column (24) is positioned at the installation hole that is used to install guide column (24) on upper formwork (2) and the upper end and this installation Hole sliding fit, the lower end of guide post (24) is positioned in the installation hole that is used to install guide post (24) on the upper mold core fixed plate (8) and the lower end is slip fit with this installation hole, described upper formwork (2), Upper mold backing plate (3) and upper fixing plate (4) are fastened with hexagon socket head cap screw (25) after being positioned by guide post (24), and the rod portion of guide post (24) is connected with stripping backing plate (6), The installation hole that is used to install guide post (24) in rubber pad (5), upper fixed plate (4), upper mold backing plate (3) is slip fit.