阅读说明：本技术 一种后处理排气系统不锈钢圆管缩口设备 (Stainless steel round pipe necking equipment of post-treatment exhaust system ) 是由 马强 田连营 于 2020-05-18 设计创作，主要内容包括：本发明提供一种后处理排气系统不锈钢圆管缩口设备,属于后处理排气系统不锈钢圆管缩口技术领域,以解决现有的后处理排气系统不锈钢圆管缩口设备使用时,其缩口大小不容易控制,并且无法实现各种管径的缩口的问题,所述固定座立板后端设有油缸,且油缸通过锁紧螺母与固定座立板固定连接。本发明中由于固定座立板后端设有油缸,且油缸为液压系统,通过液压系统提供动力,锥顶行程来控制缩口大小,感应开关控制锥顶行程,实现范围内各种管径的缩口；同时缩口模通过螺纹的方式安装于连接杆前端,并且缩口模与连接杆可拆卸连接,更换不同直径缩口模,还可匹配更多管径范围,从而实现各种管径的缩口。(The invention provides a stainless steel round tube necking device of a post-treatment exhaust system, which belongs to the technical field of stainless steel round tube necking of the post-treatment exhaust system and aims to solve the problems that when the stainless steel round tube necking device of the existing post-treatment exhaust system is used, the necking size is not easy to control and necking of various tube diameters cannot be realized. In the invention, the oil cylinder is arranged at the rear end of the vertical plate of the fixing seat and is a hydraulic system, the hydraulic system provides power, the size of the necking is controlled by the stroke of the cone top, and the induction switch controls the stroke of the cone top, so that the necking of various pipe diameters in a range is realized; meanwhile, the necking die is installed at the front end of the connecting rod in a threaded mode, and the necking die is detachably connected with the connecting rod, so that necking dies with different diameters can be replaced, more pipe diameter ranges can be matched, and necking of various pipe diameters can be realized.)

1. The utility model provides a post-treatment exhaust system stainless steel pipe throat equipment which characterized in that: the fixing seat comprises a fixing seat (1), wherein the fixing seat (1) is formed by welding a front cuboid transverse plate and a rear vertical plate; an oil cylinder (5) is arranged at the rear end of the vertical plate of the fixing seat (1), and the oil cylinder (5) is fixedly connected with the vertical plate of the fixing seat (1) through a locking nut; a rear positioning block (6) is arranged at the rear end of the oil cylinder (5); the upper end of the fixed seat (1) is provided with a connecting rod (3); a necking die (2) is arranged at the front end of the connecting rod (3); the necking die (2) is a composite cylinder structure consisting of a front section cone and a rear section cylinder; a necking sleeve (4) is sleeved outside the necking die (2); the necking sleeve (4) is formed by splicing two half cylinders, the materials are cast iron materials and are locked and connected through bolts, and a cylindrical cavity is arranged in the middle of the butt joint surface of the two half cylinders; the cylindrical cavity of the necking sleeve (4) is a composite cavity structure consisting of a top section conical cavity and a bottom section cylindrical cavity; the necking die (2) is connected with the combined cavity of the necking sleeve (4) in a sliding way.

2. The aftertreatment exhaust system stainless steel round tube necking apparatus of claim 1, wherein: and the rear positioning block (6) is connected with the rear end of the oil cylinder (5) in a sliding manner and is locked by a locking nut.

3. The aftertreatment exhaust system stainless steel round tube necking apparatus of claim 1, wherein: the oil cylinder (5) is a hydraulic system, and the conical top at the front end of the oil cylinder (5) is in threaded connection with the connecting rod (3).

4. The aftertreatment exhaust system stainless steel round tube necking apparatus of claim 1, wherein: the necking die (2) is installed at the front end of the connecting rod (3) in a threaded mode, and the necking die (2) is detachably connected with the connecting rod (3).

Technical Field

The invention belongs to the technical field of stainless steel round pipe necking of an exhaust post-treatment system, and particularly relates to stainless steel round pipe necking equipment of the exhaust post-treatment system.

Background

The necking processing of the round tube is a common important process, such as the operation of expanding and contracting the tube for the frame tube of the bicycle seat cushion, the photographic support frame, the military cartridge case, the connection of the round tube and the processing of the special-shaped tube. For example, the necking of stainless steel round tubes in an aftertreatment exhaust system requires specialized dies to perform the necking.

As in application No.: CN201720239747.1 the invention relates to a steel pipe flaring and necking device, wherein when a flaring workpiece needs to be subjected to necking operation, the flaring workpiece is sleeved outside a flaring die from a through hole on a working surface and is fixed, a power device drives a flaring jig to move upwards, the flaring die pushes against the flaring workpiece, and the opening of the flaring workpiece is expanded under the action of a truncated cone-shaped outer wall of the flaring die. When the necking operation is required to be carried out on the necking workpiece, the necking workpiece extends into the containing cavity of the necking die from the through hole on the working surface, the inner core plays a role in positioning and fixes the necking workpiece, the power device drives the necking jig to move upwards, the necking die pushes the necking workpiece, and the opening of the necking workpiece is reduced under the effect of the truncated cone-shaped containing cavity of the necking die. Therefore, the automatic operation of the flaring and necking of the steel pipe can be realized, the product quality is improved, and the working efficiency is improved.

Based on the search of the patents and the discovery of combining the equipment in the prior art, when the existing stainless steel circular tube necking equipment of the post-treatment exhaust system is used, the necking size is not easy to control, and necking of various tube diameters cannot be realized.

In view of the above, the present invention provides a stainless steel circular pipe necking apparatus for an exhaust system for post-treatment, which is developed and improved in view of the existing structure and defects, so as to achieve a more practical purpose.

Disclosure of Invention

In order to solve the technical problems, the invention provides a stainless steel round pipe necking device for an after-treatment exhaust system, which aims to solve the problems that when the existing stainless steel round pipe necking device for the after-treatment exhaust system is used, the necking size is not easy to control, and necking of various pipe diameters cannot be realized.

The invention aims and effects of the stainless steel round pipe necking equipment of the post-treatment exhaust system, and the equipment is achieved by the following specific technical means:

a stainless steel round pipe necking device of an aftertreatment exhaust system comprises a fixed seat, wherein the fixed seat is formed by welding a front cuboid transverse plate and a rear vertical plate; the rear end of the vertical plate of the fixing seat is provided with an oil cylinder, and the oil cylinder is fixedly connected with the vertical plate of the fixing seat through a locking nut; a rear positioning block is arranged at the rear end of the oil cylinder; the upper end of the fixed seat is provided with a connecting rod; the front end of the connecting rod is provided with a necking die; the necking die is a composite cylinder structure consisting of a front section cone and a rear section cylinder; a necking sleeve is sleeved outside the necking die; the necking sleeve is formed by splicing two half cylinders, the materials are cast iron materials and are connected through bolts in a locking mode, and a cylindrical cavity is formed in the middle of the butt joint face of the two half cylinders; the necking sleeve cylindrical cavity is a composite cavity structure consisting of a top section conical cavity and a bottom section cylindrical cavity; the necking die is connected with the combined cavity of the necking sleeve in a sliding mode.

Furthermore, the rear positioning block is connected with the rear end of the oil cylinder in a sliding mode and locked through a locking nut.

Furthermore, the oil cylinder is a hydraulic system, and the conical top at the front end of the oil cylinder is in threaded connection with the connecting rod.

Furthermore, the necking die is installed at the front end of the connecting rod in a threaded mode, and the necking die is detachably connected with the connecting rod.

Compared with the prior art, the invention has the following beneficial effects:

the necking of similar products is finished by a special stamping die, the rear end of a fixed seat of the equipment is provided with an oil cylinder, the oil cylinder is a hydraulic system, power is provided by the hydraulic system, the size of the necking is controlled by the stroke of a cone top, the stroke of the cone top is controlled by an inductive switch, and the necking of various pipe diameters in a range is realized.

The rear end of the oil cylinder is provided with a rear positioning block, the rear positioning block is connected with the rear end of the oil cylinder in a sliding mode, the rear positioning block can move back and forth and is locked through a locking nut, the position of the oil cylinder is changed by adjusting the rear positioning block, and the pipe diameter necking is conveniently controlled.

The necking die is installed at the front end of the connecting rod in a threaded mode, and is detachably connected with the connecting rod, and the necking die with different diameters can be replaced to match with more pipe diameter ranges, so that necking of various pipe diameters is realized.

Drawings

Fig. 1 is a schematic top view structure of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a fixed seat; 2. necking die; 3. a connecting rod; 4. a necking sleeve; 5. an oil cylinder; 6. and a rear positioning block.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.