CN210188304U

CN210188304U - Large-scale bolt blank stamping forming ejection tool

Info

Publication number: CN210188304U
Application number: CN201920925375.7U
Authority: CN
Inventors: Faqing Li; 李发清
Original assignee: Chongqing Standard Parts Industry Co Ltd
Current assignee: Chongqing Standard Parts Industry Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-03-27
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a punch forming ejection tool for large bolt blanks, belonging to the field of punching equipment and comprising a punching rod, a die holder with a punching hole matched with a workpiece in the middle, a supporting rod positioned at the lower end of the supporting workpiece at the lower part of the die holder and an ejector rod arranged below the supporting rod; the stamping die comprises a stamping hole, a support rod, a die holder, a deformation cavity, a through hole and a through hole, wherein the stamping hole, the support rod and the stamping rod are coaxially arranged, the deformation cavity is arranged at the upper end of the stamping hole of the die holder, and the through hole for enabling the jacking support rod to penetrate through to slide in the stamping hole is formed in the bottom of the die holder. The utility model has the advantages of high forming efficiency and low cost.

Description

Large-scale bolt blank stamping forming ejection tool

Technical Field

The utility model relates to a stamping equipment field, more specifically the theory relates to a punching press frock.

Background

Large bolts are initially formed by casting and then finish-machined to form the bolt due to the presence of the bolt head at the end. But pouring is low in production efficiency, occupies more equipment, and wastes time and labor. The nominal diameter of reinforcing bar is generally between 8-50mm, and the diameter of large-scale bolt is in its scope, and the diameter is greater than 20mm, and the reinforcing bar all generally keeps long straight form, if can cross the reinforcing bar that utilizes to cut and directly process into large-scale bolt embryo spare, can save the process of pouring, has very big improvement to production efficiency and manufacturing cost.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model aims to provide an ejecting frock of large-scale bolt blank stamping forming has solved among the prior art and has cut the problem that the reinforcing bar is difficult to process into large-scale bolt blank.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a punch forming ejection tooling for large bolt blanks comprises a punching rod, a die holder, a support rod and an ejector rod, wherein the middle of the die holder is provided with a punching hole matched with a workpiece, the support rod is positioned at the lower end of the support workpiece at the lower part of the die holder, and the ejector rod is arranged below the support rod; the stamping die comprises a stamping hole, a support rod, a die holder, a deformation cavity, a through hole and a through hole, wherein the stamping hole, the support rod and the stamping rod are coaxially arranged, the deformation cavity is arranged at the upper end of the stamping hole of the die holder, and the through hole for enabling the jacking support rod to penetrate through to slide in the stamping hole is formed in the bottom of the die holder.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a punching press hole and the bracing piece that the die holder set up carry out the location support to the work piece, again by the punching press head down punching press, the deformation chamber of cooperation punching press hole upper end is with the work piece punching press bolt head of upper end heating, accomplishes the initial contour machining to large-scale bolt embryo spare. And then the ejector rod ejects the bolt blank out through the upward ejection supporting rod to finish the processing process. Through the utility model discloses processing into bolt embryo spare with shaft-like reinforcing bar, need not through pouring the shaping, production efficiency and manufacturing cost greatly reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic view of a related fitting structure of a lower portion of a mold base;

FIG. 3 is a cross-sectional view of the die holder;

FIG. 4 is a schematic view of an adjusting nut;

FIG. 5 is an enlarged view at B;

FIG. 6 is an enlarged view at A;

the stamping die comprises a stamping head 1, a die holder 2, a support rod 3, a mandril 4, an adjusting nut 5, an operating platform 6, a pressing plate 7, a connecting rod 8, a pressure-bearing thread 9, a stamping hole 21, a deformation cavity 22 and a through hole 51.

Detailed Description

In order to make the utility model realize that the technical means, the creation characteristics, the achievement purpose and the effect are clearer and are easy to understand, the following combination and the detailed implementation are right the utility model discloses do further explanation:

as shown in fig. 1-6, the utility model provides a large bolt blank punch forming ejection tooling, which comprises a punching rod, a die holder 2 provided with a punching hole 21 in the middle for matching with a workpiece, a support rod 3 positioned at the lower part of the die holder 2 for supporting the lower end of the workpiece, and an ejector rod 4 arranged below the support rod 3; the stamping hole 21 and the support rod 3 are coaxial with the stamping rod, the die holder 2 is provided with a deformation cavity 22 at the upper end of the stamping hole 21, and the bottom of the die holder 2 is provided with a through hole 51 for the ejector rod 4 to penetrate through to jack the support rod 3 to slide in the stamping hole 21.

According to the above technical scheme, the utility model discloses a working process does: before punching, firstly, one end of a steel bar is heated and burned, the steel bar is placed into the punching hole 21, the burned end faces upwards, the lower end of the steel bar is supported by the support rod 3, during punching, the burned end is easy to deform, the deformation cavity 22 provides a deformation space for the steel bar, and the steel bar is limited by the deformation cavity 22 to a certain degree to further present a shape consistent with the shape of the deformation cavity 22. Generally, the deformation chamber 22 is hexagonal prism shaped to conform to the general shape of a bolt head. The diameters of the punching hole 21 and the support rod 3 are close to the diameter of the steel bar, so that the deformation of the part of the steel bar which is not burnt can be prevented to a certain extent. But also cannot be a size fit or otherwise easily placed in. After the punching is finished, the punching rod retracts, the ejector rod 4 penetrates through the through hole 51 to eject the workpiece through the supporting rod 3, and the workpiece is conveniently clamped, so that the machining is finished.

Preferably, the top rod 4 is fixedly connected with the stamping rod through a connecting rod 8 so as to move up and down synchronously, and when the stamping rod contacts with a workpiece, the top rod 4 does not contact with the support rod 3. In actual installation, the die holder 2 is installed in a step hole in the middle of the equipment operating platform 6, so that the product model can be conveniently replaced along with the die holder. The upper end of the stamping rod is fixed at the end part of a piston rod of the hydraulic cylinder or the end part of a movable rod of the crank mechanism through a pressure plate 7. The ejector rod 4 is fixedly connected with the pressing plate 7 through a connecting rod 8 penetrating through the operating platform 6, and correspondingly, a connecting plate convenient to connect is arranged at the bottom of the ejector rod 4.

Preferably, the lower end of the support rod 3 is supported by an adjusting nut 5 and can move along the axis of the support rod in the adjusting nut 5, and the adjusting nut 5 is connected with the lower part of the die holder 2 through a pressure-bearing thread 9; the through hole 51 is arranged at the bottom of the adjusting nut 5. The bottom of the die holder 2 is adjusted by using a similar screw rod structure so as to adjust the position of the bottom of the supporting rod 3, so that the die holder can adapt to the processing of products with different lengths within a certain range, and generally, the lengths of the products processed by the same die have little difference and are all within the adjusting range.

Preferably, the profile of the pressure-bearing thread 9 is in the shape of an unequal-waist trapezoid, wherein the inclination of the upper side of the profile on the internal thread of the adjusting nut 5 is greater than that of the lower side, and the inclination of the upper side of the profile on the external thread below the die holder 2 is less than that of the lower side. The adjusting nut 5 is forced downward in operation, and the lower side of the thread section thereof is arranged to be nearly horizontal, so that the adjusting nut 5 can bear a large downward force without slipping easily.

It is worth mentioning that the method for producing the parts is more suitable for producing thicker large-scale bolt blanks capable of bearing certain impact force. If the bolt is thin, a corresponding reduction in length is made to prevent impact deformation.

Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A punch forming ejection tooling for large bolt blanks is characterized by comprising a punching rod, a die holder, a support rod and an ejector rod, wherein the middle of the die holder is provided with a punching hole matched with a workpiece, the support rod is positioned at the lower end of the support workpiece at the lower part of the die holder and is used for supporting the lower end of the workpiece, and the ejector rod is arranged below the support rod; the stamping die comprises a stamping hole, a support rod, a die holder, a deformation cavity, a through hole and a through hole, wherein the stamping hole, the support rod and the stamping rod are coaxially arranged, the deformation cavity is arranged at the upper end of the stamping hole of the die holder, and the through hole for enabling the jacking support rod to penetrate through to slide in the stamping hole is formed in the bottom of the die holder.

2. The large bolt blank punch forming ejection tool according to claim 1, wherein the ejector rod is fixedly connected with the punching rod through a connecting rod so as to move up and down synchronously, and when the punching rod contacts a workpiece, the ejector rod does not contact the supporting rod.

3. The punch forming ejection tooling for the large bolt blank according to claim 2, wherein the lower end of the support rod is supported by an adjusting nut and can move along the axis of the support rod in the adjusting nut, and the adjusting nut is connected with the lower part of the die holder through a pressure-bearing thread; the through hole is formed in the bottom of the adjusting nut.

4. The punch forming ejection tool for large bolt blanks according to claim 3, wherein the profile of the pressure-bearing thread is in the shape of an unequal-waist trapezoid, wherein the upper side inclination of the profile on the internal thread of the adjusting nut is greater than that on the lower side, and the upper side inclination of the profile on the external thread below the die holder is less than that on the lower side.