CN216226469U

CN216226469U - Die for preventing deformation of trimming rod part

Info

Publication number: CN216226469U
Application number: CN202122510921.0U
Authority: CN
Inventors: 苏威桦
Original assignee: Jiaxing Chengda Mould Co ltd
Current assignee: Jiaxing Chengda Mould Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-08
Anticipated expiration: 2031-10-19

Abstract

A die for preventing the deformation of trimming rod part comprises an upper die and a lower die. The lower die comprises a die shell, a forming die core, an inner die, a locking tooth, a top cylinder and a top rod unit. The formwork comprises a formwork main body, a first mounting hole and a second mounting hole. The molding die core comprises a die core main body and a molding hole. The inner mold comprises an inner mold main body and an installation through hole. The top cylinder comprises a top cylinder main body and a top cylinder mounting hole. The top cylinder main body is inserted in the forming hole and the mounting through hole. The ejector rod unit comprises an ejector rod and a spring. When the workpiece is installed on the lower die, the workpiece is inserted into the ejector sleeve mounting hole, one end of the ejector sleeve main body abuts against the end of the workpiece, and the rod part of the workpiece abuts against one end of the ejector rod, so that the rod part of the workpiece is prevented from deforming. The die for preventing the deformation of the trimming rod part is simple in structure and convenient to use, avoids the deformation of the workpiece rod part, and improves the quality of products.

Description

Die for preventing deformation of trimming rod part

Technical Field

The utility model belongs to the technical field of forming dies, and particularly relates to a die for preventing a trimming rod part from deforming.

Background

The industrial production of the die is used for obtaining various dies and tools of required products by methods such as injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and the like. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material.

At present, in the process of production and processing, a workpiece is trimmed and deburred through a die, for example, a square bolt burr-free trimming die disclosed in chinese patent No. cn201920578864.x has a working principle that after a screw of a bolt blank is inserted into a die hole, a supporting surface is pressed on the top surface of a lower die, after the trimming die is punched, an unnecessary part is cut off, the generated burr is subjected to shearing force at the edge of a counter bore in the punching process, the burr is cut off, in the punching process, a knock-out rod abuts against one end of the screw to limit the position of the screw, but the rod part of the screw is punched in the punching process, so that the rod part of the screw is deformed, and the quality of the screw is affected.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a die for preventing deformation of a trimming rod part, which improves product quality, so as to meet industrial requirements.

The utility model provides a prevent side cut pole portion deformation mould, includes one and goes up the mould, one sets up go up mould one end and be used for the lower mould of installation work piece. The lower die comprises a die shell, a forming die core fixedly connected to one end head of the die shell, an inner die accommodated in the die shell and abutted to one end of the forming die core, a locking tooth arranged at one end head of the die shell, which faces away from the forming die core, a top barrel inserted in the inner die, and a top rod unit arranged in the top barrel. The formwork comprises a formwork main body, a first mounting hole and a second mounting hole, wherein the first mounting hole and the second mounting hole are arranged in the axial direction of the formwork main body. The diameter of the second mounting hole is larger than that of the first mounting hole. The molding die core comprises a die core main body fixedly connected in the first mounting hole and a molding hole arranged in the axial direction of the die core main body. The inner mold comprises an inner mold main body accommodated in the mold shell and an installation through hole arranged in the axial direction of the inner mold main body. The top cylinder comprises a top cylinder main body and a top cylinder mounting hole arranged in the axial direction of the top cylinder main body. The forming hole and the central shaft of the mounting through hole are on the same straight line. The top cylinder main body is inserted in the forming hole and the mounting through hole. The ejector rod unit comprises an ejector rod accommodated in the ejector sleeve mounting hole and a spring arranged at one end of the ejector rod. When the workpiece is installed on the lower die, the workpiece is inserted into the ejector sleeve mounting hole, one end of the ejector sleeve main body abuts against the end of the workpiece, and the rod part of the workpiece abuts against one end of the ejector rod, so that the rod part of the workpiece is prevented from deforming.

Furthermore, on the section along the central axis of the lower die, the outer contours of the first mounting hole and the forming die core are tapered.

Further, the top cylinder main part is including the first top cylinder, the second top cylinder that set gradually, the external diameter of the first top cylinder equals the diameter in shaping hole, the external diameter of the second top cylinder equals the diameter of installation through-hole.

Furthermore, the first top cylinder and the second top cylinder are integrally formed.

Further, the diameter of the molding hole is smaller than that of the mounting through hole.

Further, the ejector rod comprises an ejector rod main body and an ejector rod seat arranged at one end of the ejector rod main body, and the diameter of the ejector rod main body is smaller than that of the ejector rod seat.

Furthermore, the ejector sleeve mounting hole comprises a first ejector sleeve mounting hole and a second ejector sleeve mounting hole arranged at one end of the first ejector sleeve mounting hole, the diameter of the first ejector sleeve mounting hole is smaller than that of the second ejector sleeve mounting hole, the ejector rod main body is accommodated in the first ejector sleeve mounting hole, and the ejector rod seat is accommodated in the second ejector sleeve mounting hole.

Compared with the prior art, the die for preventing the trimming rod part from deforming reduces the impact force of the rod part of the workpiece through the ejector sleeve and the ejector rod unit in the lower die. The forming holes of the forming die core and the central shafts of the forming holes of the forming die core are on the same straight line, the ejector sleeve is inserted into the forming holes and the mounting through holes, and the ejector rod units are inserted into the ejector sleeve mounting holes of the ejector sleeve. The ejector rod unit comprises an ejector rod accommodated in the ejector sleeve mounting hole and a spring arranged at one end of the ejector rod. When a workpiece is installed on the lower die, the workpiece is inserted into the ejector sleeve installation hole, one end of the ejector sleeve main body abuts against the end of the workpiece, so that the position of the workpiece is limited, the end of the workpiece is formed in the forming hole, the rod part of the workpiece abuts against one end of the ejector rod, and the ejector rod reduces the impact force between the rod part of the workpiece and the ejector rod through the spring. The die for preventing the deformation of the trimming rod part is simple in structure and convenient to use, avoids the deformation of the workpiece rod part, and improves the quality of products.

Drawings

Fig. 1 is a schematic cross-sectional view of a die for preventing deformation of a trimming rod according to the present invention.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the utility model is not intended to limit the scope of the utility model.

Fig. 1 is a schematic cross-sectional view of a die for preventing deformation of a trimming rod according to the present invention. The die for preventing the deformation of the trimming rod part comprises an upper die 10 and a lower die 20 which is arranged at one end of the upper die 10 and is used for mounting a workpiece 1. The trimming stem deformation preventing mold further includes other functional modules, such as assembling components and the like, which should be well known to those skilled in the art, and will not be described in detail herein.

The upper die 10 and the lower die 20 are matched with each other to punch and form the workpiece 1, and the upper die 10 is a prior art and is not described herein again.

The lower mold 20 includes a mold shell 21, a forming mold core 22 fixedly connected to an end of the mold shell 21, an inner mold 23 accommodated in the mold shell 21 and abutting against an end of the forming mold core, a locking tooth 24 disposed at an end of the mold shell 21 opposite to the end of the forming mold core 22, an ejector sleeve 25 inserted into the inner mold 23, and an ejector rod unit 26 disposed in the ejector sleeve 24.

The formwork 21 includes a main body 211, and a first mounting hole 212 and a second mounting hole 213 disposed in an axial direction of the main body 211. The first mounting hole 212 accommodates the molding die core 22, the second mounting hole 213 accommodates the inner die 23, and the diameter of the second mounting hole 213 is larger than that of the first mounting hole 212, it is conceivable that a step shape is formed between the first mounting hole 212 and the second mounting hole 213, so that the molding die core 22 and the inner die 23 are mounted in the mold shell 21, and the position of the molding die core 22 can be limited by the inner die 23.

The molding core 22 includes a core body 221 fixedly connected to the first mounting hole 212, and a molding hole 222 axially disposed in the core body 221. In the machining process, the workpiece 1 is inserted into the forming mold core 22 and the top barrel 25, the end of the workpiece 1 is accommodated in the forming hole 222, the rod portion of the workpiece 1 is inserted into the top barrel 25, and on the cross section along the central axis of the lower mold 20, the outer contours of the first mounting hole 212 and the forming mold core 22 are tapered, so that the forming mold core 22 is inserted into the first mounting hole 212, and the forming mold core 22 is located in the first mounting hole 212.

The inner mold 23 includes an inner mold body 231 received in the mold shell 21, and a mounting hole 232 axially disposed in the inner mold body 231. The mounting through hole 232 is configured to accommodate the top cylinder 25, and the workpiece 1 inserted into the forming die core 22 is ejected out through the top cylinder 25, and the inner die 23 will be described in detail with reference to the top cylinder 25.

The locking teeth 24 are inserted into an end of the mold shell 21 opposite to the molding core 22 to limit the position of the inner mold 23 in the mold shell 21. The locking teeth 24 are a prior art and will not be described in detail herein.

The top cylinder 25 includes a top cylinder main body 251, and a top cylinder mounting hole 252 provided in the axial direction of the top cylinder main body 251. The central axes of the forming hole 222 and the mounting through hole 232 are aligned, and the top cylinder main body 251 is inserted into the forming hole 222 and the mounting through hole 232, so that the top cylinder main body 251 abuts against the workpiece 1.

The top barrel main body 251 includes a first top barrel 2511 and a second top barrel 2512 which are sequentially arranged, the outer diameter of the first top barrel 2511 is equal to the diameter of the forming hole 222, the outer diameter of the second top barrel 2512 is equal to the diameter of the mounting through hole 232, and the diameter of the forming hole 222 is smaller than the diameter of the mounting through hole 232, it is conceivable that steps are formed between the forming hole 222 and the mounting through hole 232 and between the first top barrel 2511 and the second top barrel 2512, so that when the top barrel 25 slides in the mounting through hole 232 and the forming hole 222, the sliding position of the top barrel 25 can be limited. The first top barrel 2511 and the second top barrel 2512 are integrally formed, so that the service life of the top barrel main body 251 is ensured.

The top cylinder mounting hole 252 includes a first top cylinder mounting hole 2521, and a second top cylinder mounting hole 2522 provided at one end of the first top cylinder mounting hole 2521. The diameter of the first top cylinder mounting hole 2521 is smaller than the diameter of the second top cylinder mounting hole 2522, and it is conceivable that the top cylinder mounting hole 252 is stepped.

The knock bar unit 26 includes a knock bar 261 received in the knock cylinder mounting hole 252, and a spring 262 provided at one end of the knock bar 261. The knock bar 261 is movable within the knock housing hole 252 by the support of the spring 262.

The knock bar 261 includes a knock bar body 2611, and a knock bar housing 2612 provided at one end of the knock bar body 2611. The diameter of the ejector rod main body 2611 is smaller than that of the ejector rod seat 2612, the connection position of the ejector rod main body 2611 and the ejector rod seat 2612 is stepped, the ejector rod main body 2611 is accommodated in the first ejector cylinder mounting hole 2521, and the ejector rod seat 2612 is accommodated in the second ejector cylinder mounting hole 2522, so that the ejector rod 261 and the ejector cylinder mounting hole 252 are stepped, and the moving range of the ejector rod 261 in the ejector cylinder mounting hole 252 is limited.

When the workpiece 1 is mounted on the lower die 20, the workpiece 1 is inserted into the top cylinder mounting hole 252, one end of the top cylinder main body 251 abuts against the end of the workpiece 1, and the rod part of the workpiece 1 abuts against one end of the ejector rod 261. When the upper die 10 and the lower die 20 punch the workpiece, the ejector rod 261 reduces the impact force between the rod part of the workpiece 1 and the ejector rod 261 through the spring 262, and the ejector sleeve main body 251 abuts against the end of the workpiece 1, so that the position of the workpiece 1 is limited, the end of the workpiece 1 is machined and formed, and the rod part of the workpiece 1 is prevented from being deformed. In addition, after the workpiece 1 is formed, the top cylinder main body 251 pushes the workpiece 1 to ascend, and pushes the formed workpiece 1 out of the lower die 20.

Compared with the prior art, the die for preventing the trimming rod part from deforming provided by the utility model reduces the impact force of the rod part of the workpiece 1 through the ejector sleeve 25 and the ejector rod unit 26 in the lower die 20. The central axes of the forming hole 222 of the forming mold core 22 and the forming hole 222 of the forming mold core 22 are aligned, the ejector sleeve 25 is inserted into the forming hole 222 and the mounting through hole 232, and the ejector rod unit 26 is inserted into the ejector sleeve mounting hole 252 of the ejector sleeve 25. The knock bar unit 26 includes a knock bar 261 received in the knock cylinder mounting hole 252, and a spring 262 provided at one end of the knock bar 261. When a workpiece 1 is mounted on the lower die 20, the workpiece 1 is inserted into the ejector mounting hole 252, one end of the ejector main body 251 abuts against the end of the workpiece 1, so that the position of the workpiece 1 is limited and the end of the workpiece 1 is molded in the molding hole 222, the rod portion of the workpiece 1 abuts against one end of the ejector rod 261, and the ejector rod 261 reduces the impact force between the rod portion of the workpiece 1 and the ejector rod 261 through the spring 262. The die for preventing the deformation of the trimming rod part is simple in structure and convenient to use, avoids the deformation of the workpiece rod part, and improves the quality of products.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims

1. The utility model provides a prevent side cut pole portion deformation mould, includes an last mould, its characterized in that: the die for preventing the deformation of the trimming rod part comprises a lower die which is arranged at one end of the upper die and used for installing a workpiece, the lower die comprises a die shell, a forming die core which is fixedly connected with one end head of the die shell, an inner die which is accommodated in the die shell and is abutted against one end of the forming die core, a locking tooth which is arranged at one end head of the die shell opposite to one end head of the forming die core, a top cylinder which is inserted on the inner die, and a top rod unit which is arranged in the top cylinder, the die shell comprises a die shell main body, a first mounting hole and a second mounting hole which are arranged in the axial direction of the die shell main body, the diameter of the second mounting hole is larger than that of the first mounting hole, the forming die core comprises a die core main body which is fixedly connected in the first mounting hole, and a forming hole which is arranged in the axial direction of the die core main body, the inner die comprises an inner die main body accommodated in the die shell and an installation through hole arranged in the axial direction of the inner die main body, the ejector comprises an ejector main body, an ejector installation hole arranged in the axial direction of the ejector main body, the forming hole and the central axis of the installation through hole are arranged on the same straight line, the ejector main body is inserted in the forming hole and the installation through hole, the ejector unit comprises an ejector rod accommodated in the ejector installation hole and a spring arranged at one end of the ejector rod, when a workpiece is installed on the lower die, the workpiece is inserted in the ejector installation hole, one end of the ejector main body abuts against the end of the workpiece, and the rod part of the workpiece abuts against one end of the ejector rod to avoid the rod part of the workpiece from deforming.

2. The die for preventing deformation of the trimming shank according to claim 1, wherein: on the section along the central axis of the lower die, the outer contours of the first mounting hole and the forming die core are tapered.

3. The die for preventing deformation of the trimming shank according to claim 1, wherein: the top cylinder main part is including the first top cylinder, the second top cylinder that set gradually, the external diameter of the first top cylinder equals the diameter in shaping hole, the external diameter of the second top cylinder equals the diameter of installation through-hole.

4. The die for preventing deformation of the trimming shank according to claim 3, wherein: the first top barrel and the second top barrel are integrally formed.

5. The die for preventing deformation of the trimming shank according to claim 1, wherein: the diameter of the forming hole is smaller than that of the mounting through hole.

6. The die for preventing deformation of the trimming shank according to claim 1, wherein: the ejector rod comprises an ejector rod main body and an ejector rod seat arranged at one end of the ejector rod main body, and the diameter of the ejector rod main body is smaller than that of the ejector rod seat.

7. The die for preventing deformation of the trimming shank according to claim 6, wherein: the ejector sleeve mounting hole comprises a first ejector sleeve mounting hole and a second ejector sleeve mounting hole arranged at one end of the first ejector sleeve mounting hole, the diameter of the first ejector sleeve mounting hole is smaller than that of the second ejector sleeve mounting hole, the ejector rod main body is accommodated in the first ejector sleeve mounting hole, and the ejector rod seat is accommodated in the second ejector sleeve mounting hole.