CN216096090U - Combined punching die for bolt - Google Patents

Abstract

The utility model discloses a combined type stamping die for a bolt, which relates to the technical field of bolt forming and comprises a reducing die, wherein the reducing die is used for reducing the diameter, a chamfering die for chamfering is arranged at the side wall of the reducing die, a quenching die for quenching is arranged at the side wall of the chamfering die, a nut forming die for nut forming is arranged at the side wall of the quenching die, and a thread rolling die for thread rolling is arranged at the side wall of the nut forming die; through the mode, after the material is cut, the material is placed in a reducing die to be subjected to reducing treatment, then the material is moved into a chamfering die to be subjected to chamfering treatment, the material is moved onto a quenching die after chamfering, the end part of the bolt is subjected to heating softening treatment by the quenching die, then the material is placed in a nut forming die to be subjected to inner hexagonal forming and nut outer wall tooth socket forming, the requirement on rigid extrusion force of the nut forming die is low, inner hexagonal rapid forming is facilitated, and meanwhile, damage to an inner hexagonal forming outer die can be reduced.

Description

Combined punching die for bolt

Technical Field

The utility model relates to the technical field of bolt forming, in particular to a combined punching die for a bolt.

Background

Bolt: mechanical parts, cylindrical threaded fasteners fitted with nuts. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. The hexagon socket head cap screw is one kind of bolt.

The inner hexagonal bolt is formed by cold heading, the cold heading process comprises material cutting, pre-heading reducing, fine heading, inner hexagonal forming and thread rolling, the existing inner hexagonal forming is rigid extrusion forming, the requirement on extrusion force of the rigid extrusion forming is large, the inner hexagonal forming is not facilitated, and meanwhile, the damage to an outer die for the inner hexagonal forming is easily caused.

A modular die for bolts has therefore been proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a combined type punching die for a bolt, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the combined type stamping die for the bolt comprises a reducing die, wherein the reducing die is used for reducing, a chamfering die for chamfering is arranged at the side wall of the reducing die, a quenching die for quenching is arranged at the side wall of the chamfering die, a nut forming die for nut forming is arranged at the side wall of the quenching die, and a thread rolling die for thread rolling is arranged at the side wall of the nut forming die.

Furthermore, the reducing mold comprises an outer reducing mold, a first push rod, a first pressure rod and an inner reducing mold, wherein the inner reducing mold is fixedly connected in the outer reducing mold, and the upper end and the lower end of the inner reducing mold are respectively attached to and slidably connected with the first pressure rod and the first push rod.

Furthermore, the chamfering die comprises a second pressing rod, a chamfering outer die, a second push rod and a chamfering inner die, wherein the chamfering inner die is fixedly connected in the chamfering outer die, and the upper end and the lower end of the chamfering inner die are respectively attached to the second pressing rod and the second push rod in a sliding connection mode.

Furthermore, the quenching die comprises a third push rod, a quenching outer die, a quenching inner die and a threaded heater, the quenching outer die is internally provided with the quenching inner die, the threaded heater is arranged in a groove at the upper end of the quenching inner die, and the bottom of the quenching inner die is attached to the third push rod in a sliding connection mode.

Further, the upper end of the material chamfered by the chamfering die is arranged in the thread heater and is not contacted with the thread heater.

Furthermore, nut forming die includes tooth's socket shape catch bar, interior hexagonal shaping external mold, fourth push rod, nut shaping external mold, nut tooth's socket shaping centre form and tooth piece, nut shaping external mold inner wall fixedly connected with nut tooth's socket shaping centre form, the even fixedly connected with of nut tooth's socket shaping centre form upper end inner wall is used for the fashioned tooth piece of tooth's socket, nut tooth's socket shaping centre form bottom laminating sliding connection has the fourth push rod, tooth's socket catch bar bottom fixedly connected with is used for the fashioned interior hexagonal shaping external mold of interior hexagonal.

Furthermore, the inner hexagonal forming external mold is provided with a sliding tooth groove matched with the tooth block, and the tooth groove-shaped push rod is in contact with the upper end of the nut tooth groove forming internal mold in a fitting manner when the tooth groove-shaped push rod moves to the upper end of the nut tooth groove forming internal mold.

Furthermore, the thread rolling die comprises an inserting polygonal rod, a rotating rod, an outer thread rolling die and an inner thread rolling die, the inner thread rolling die for thread rolling is fixedly connected in the outer thread rolling die, the rotating rod is connected with an external rotating assembly, the rotating rod is connected with an inserting polygonal rod, and the inserting polygonal rod is inserted in the bolt inner hexagonal groove.

The utility model has the beneficial effects that:

according to the utility model, after cutting, the material is placed in a reducing die for reducing, then moved into a chamfering die for chamfering, moved onto a quenching die after chamfering, heated and softened at the end part of the bolt by the quenching die, and then placed in a nut forming die for inner hexagon forming and nut outer wall tooth groove forming, the rigid extrusion force requirement of the nut forming die is low, so that the inner hexagon can be quickly formed, meanwhile, the damage of an inner hexagon forming outer die can be reduced, and finally, thread rolling is performed by a thread rolling die, so that bolt forming is facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a structural cross-sectional view of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. the diameter reducing outer die 2, the first push rod 3, the first pressure rod 4, the second pressure rod 5, the chamfering outer die 6, the second push rod 7, the third push rod 8, the quenching outer die 9, the tooth groove-shaped push rod 10, the inner hexagonal forming outer die 11, the fourth push rod 12, the nut forming outer die 13, the plug-in polygonal rod 14, the rotating rod 15, the thread rolling outer die 16, the chamfering inner die 17, the quenching inner die 18, the thread heater 19, the nut tooth groove forming inner die 20, the thread rolling inner die 21, the diameter reducing inner die 22, the sliding tooth groove 23 and the tooth blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

As shown in fig. 1-2, the combined type punching die for the bolt comprises a reducing die, the reducing die comprises an outer reducing die 1, a first push rod 2, a first pressure rod 3 and an inner reducing die 21, the outer reducing die 1 is fixedly connected with the inner reducing die 21, the upper end and the lower end of the inner reducing die 21 are respectively jointed with the first pressure rod 3 and the first push rod 2 in a sliding manner, and the reducing die is used for reducing;

as shown in fig. 1-2, a chamfering mold for chamfering is arranged at the side wall of the reducing mold, the chamfering mold comprises a second pressure lever 4, an outer chamfering mold 5, a second push rod 6 and an inner chamfering mold 16, the inner chamfering mold 16 is fixedly connected in the outer chamfering mold 5, and the upper end and the lower end of the inner chamfering mold 16 are respectively attached and slidably connected with the second pressure lever 4 and the second push rod 6, so that chamfering is facilitated;

as shown in fig. 1-2, a quenching die for quenching is arranged at the side wall of the chamfering die, the quenching die comprises a third push rod 7, a quenching outer die 8, a quenching inner die 17 and a thread heater 18, the quenching outer die 8 is internally provided with the quenching inner die 17, the thread heater 18 is arranged in a groove at the upper end of the quenching inner die 17, the bottom of the quenching inner die 17 is jointed and slidably connected with the third push rod 7, the upper end of a material chamfered by the chamfering die is arranged in the thread heater 18 and is not contacted with the thread heater 18, so that softening treatment is facilitated;

as shown in fig. 1-2, a nut forming mold for nut forming is arranged at the side wall of the quenching mold, the nut forming mold comprises a tooth groove-shaped pushing rod 9, an inner hexagonal forming outer mold 10, a fourth pushing rod 11, a nut forming outer mold 12, a nut tooth groove forming inner mold 19 and tooth blocks 23, the inner wall of the nut forming outer mold 12 is fixedly connected with a nut tooth groove forming inner mold 19, the inner wall of the upper end of the nut tooth groove forming inner mold 19 is uniformly and fixedly connected with the tooth blocks 23 for tooth groove forming, the bottom of the nut tooth groove forming inner mold 19 is attached and slidably connected with a fourth pushing rod 11, the bottom of the tooth groove-shaped pushing rod 9 is fixedly connected with the inner hexagonal forming outer mold 10 for inner hexagonal forming, the inner hexagonal forming outer mold 10 is provided with a sliding tooth groove 22 matched with the tooth blocks 23, the tooth groove-shaped pushing rod 9 is attached and contacted with the upper end of the nut tooth groove forming inner mold 19 when the tooth groove-shaped pushing rod 9 moves to the upper end of the nut tooth groove forming inner mold 19, the nut forming die is arranged in a nut forming die for inner hexagon forming and the tooth groove forming of the outer wall of the nut, the requirement on rigid extrusion force of the nut forming die is low, and the quick inner hexagon forming is facilitated;

as shown in fig. 1-2, a thread rolling die for thread rolling is arranged at a side wall of the nut forming die, the thread rolling die comprises an insertion polygonal rod 13, a rotating rod 14, an outer thread rolling die 15 and an inner thread rolling die 20, the inner thread rolling die 20 for thread rolling is fixedly connected in the outer thread rolling die 15, the rotating rod 14 is connected with an external rotating component, the rotating rod 14 is connected with the insertion polygonal rod 13, the insertion polygonal rod 13 is inserted in a hexagonal groove in a bolt, and the thread rolling die performs thread rolling processing to facilitate bolt forming.

First push rod 2, first depression bar 3, second depression bar 4, second push rod 6, third push rod 7, tooth's socket shape catch bar 9, fourth push rod 11 and dwang 14 all are connected with the flexible end of external cylinder, the cylinder that dwang 14 is connected and external motor output fixed connection.

When in use, the material is cut and then placed in a reducing inner mold 21 of a reducing mold, the first pressure rod 3 is extruded and then subjected to reducing treatment, then the material is moved into a chamfering inner mold 16 of a chamfering mold, the second pressure rod 4 is extruded and then subjected to chamfering treatment, the material is moved into a quenching inner mold 17 of a quenching mold after chamfering, a thread heater 18 of the quenching mold is used for heating and softening the end part of a bolt, then the material is placed in a nut tooth groove forming inner mold 19 of the nut forming mold, a tooth groove-shaped push rod 9 pushes the softened material to move, a tooth block 23 is used for nut outer wall tooth groove forming, an inner hexagonal forming outer mold 10 is used for inner hexagonal forming, the rigid extrusion force requirement of the nut forming mold is small, the inner hexagonal fast forming is facilitated, meanwhile, the damage of the inner hexagonal forming outer mold can be reduced, the material is finally placed in a thread rolling inner mold 20 of a thread rolling mold, an inserting polygonal rod 13 is moved to be inserted and connected with an inner hexagonal groove, the rotating rod 14 drives the inserting polygonal rod 13 to rotate, meanwhile, the inserting polygonal rod 13 drives the bolt to rotate, and the rotating bolt is matched with the thread rolling inner die 20 to carry out thread rolling processing, so that bolt forming is conveniently carried out.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims (8)

1. The combined type stamping die for the bolt comprises a reducing die and is characterized in that: the reducing die is used for reducing, a chamfering die for chamfering is arranged at the side wall of the reducing die, a quenching die for quenching is arranged at the side wall of the chamfering die, a nut forming die for nut forming is arranged at the side wall of the quenching die, and a thread rolling die for thread rolling is arranged at the side wall of the nut forming die.

2. The modular die for a bolt of claim 1, wherein: the reducing mold comprises a reducing outer mold (1), a first push rod (2), a first pressing rod (3) and a reducing inner mold (21), wherein the reducing outer mold (1) is fixedly connected with the reducing inner mold (21), and the upper end and the lower end of the reducing inner mold (21) are respectively attached to the first pressing rod (3) and the first push rod (2).

3. The modular die for a bolt of claim 2, wherein: the chamfering die comprises a second pressing rod (4), a chamfering outer die (5), a second push rod (6) and a chamfering inner die (16), wherein the chamfering outer die (5) is fixedly connected with the chamfering inner die (16), and the upper end and the lower end of the chamfering inner die (16) are respectively attached to the second pressing rod (4) and the second push rod (6).

4. The modular die for a bolt of claim 3, wherein: the quenching die comprises a third push rod (7), a quenching outer die (8), a quenching inner die (17) and a threaded heater (18), wherein the quenching inner die (17) is installed in the quenching outer die (8), the threaded heater (18) is installed in a groove at the upper end of the quenching inner die (17), and the bottom of the quenching inner die (17) is attached to the third push rod (7) in a sliding mode.

5. The modular die for a bolt of claim 4, wherein: the upper end of the material chamfered by the chamfering die is arranged in the thread heater (18) and is not contacted with the thread heater (18).

6. The modular die for a bolt of claim 5, wherein: nut forming die includes tooth's socket shape catch bar (9), interior hexagonal shaping external mold (10), fourth push rod (11), nut shaping external mold (12), nut tooth's socket shaping centre form (19) and tooth piece (23), nut shaping external mold (12) inner wall fixedly connected with nut tooth's socket shaping centre form (19), the even fixedly connected with of nut tooth's socket shaping centre form (19) upper end inner wall is used for tooth's socket fashioned tooth piece (23), nut tooth's socket shaping centre form (19) bottom laminating sliding connection has fourth push rod (11), tooth's socket catch bar (9) bottom fixedly connected with is used for interior hexagonal shaping external mold (10) of interior hexagonal shaping.

7. The modular die for a bolt of claim 6, wherein: the inner hexagonal forming outer die (10) is provided with a sliding tooth groove (22) matched with the tooth block (23) for use, and the tooth groove-shaped push rod (9) is in contact with the upper end of the nut tooth groove forming inner die (19) in a fitting manner when the tooth groove-shaped push rod (9) moves to the upper end of the nut tooth groove forming inner die (19).

8. The modular die for a bolt of claim 7, wherein: the thread rolling die comprises a plug-in polygonal rod (13), a rotating rod (14), a thread rolling outer die (15) and a thread rolling inner die (20), wherein the thread rolling inner die (20) used for thread rolling is fixedly connected in the thread rolling outer die (15), the rotating rod (14) is connected with an external rotating assembly, the rotating rod (14) is connected with the plug-in polygonal rod (13), and the plug-in polygonal rod (13) is plugged with a bolt inner hexagonal groove.

Images