CN113399530A

CN113399530A - Pressure forming device for three-way catalytic converter shell

Info

Publication number: CN113399530A
Application number: CN202110722427.2A
Authority: CN
Inventors: 李友泉; 顾建初; 谭军伟
Original assignee: Zhongyong Intelligent Equipment Wuxi Co ltd
Current assignee: Zhongyong Intelligent Equipment Wuxi Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-17

Abstract

The invention is a three-way catalytic converter shell pressure forming device. The outer module is connected to the outer mold segment, the shell is placed on the inner side of the outer mold segment, the top of the main push cylinder outside the outer mold base is fixed to the bottom surface of the top plate, the output end of the main push cylinder is connected to the lifting plate, the center of the outer mold segment is provided with a rotating rod, and the outside of the rotating rod is provided with a rotating rod. The inner mold is in contact with the shell, the inner mold is installed in the limit seat, the limit seat is connected to the connecting seat, the top surface of the base is connected to the connecting seat, the middle and lower parts of the rotating rod are connected to the connecting seat through a bearing, and a set between the bearing and the inner mold is provided. There is a support plate, and the lower end of the rotating rod is connected to the output end of the rotating oil cylinder. The advantages of the invention are: the main thrust cylinders work synchronously, the pressure forming is stable and effective, the gap feeding, and the reciprocating rotation of the rotary cylinders, realizes the closed-loop control of the forming position, and realizes the high-efficiency and high-quality pressure forming of the three-way catalytic converter shell.

Description

Pressure forming device for three-way catalytic converter shell

Technical Field

The invention relates to a three-way catalyst shell pressure forming device.

Background

The three-way catalyst is installed outside the automobile exhaust system and can convert harmful gas, such as CO, HC, NOx, etc. exhausted from automobile exhaust into harmless carbon dioxide, water and nitrogen via oxidation and reduction. When high-temperature automobile exhaust passes through the purification device, the purifying agent in the three-way catalyst enhances the activity of three gases of CO, HC and NOx to promote the three gases to carry out certain oxidation-reduction chemical reaction, wherein CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water and carbon dioxide; NOx is reduced to nitrogen and oxygen. Three kinds of harmful gases are changed into harmless gases, so that the automobile exhaust can be purified.

The three-way catalyst comprises a shell and a ceramic carrier arranged in the shell, wherein the outer side of the carrier is wrapped with a liner, and heat insulation cotton is arranged between the carrier and the shell.

The shell of the three-way catalyst is generally made of metal, and a hump-shaped bulge is required to be formed at the end part of the shell and is used for being connected with a horn pipe through a clamp.

The forming of three way catalyst converter casing of prior art generally adopts the tubulation earlier, then the fashioned technology of water rising, because technical limitation, can't effectively guarantee part geometric tolerances requirement, and takes place the welding part condition such as fracture, local undergauge in-process collapse easily, and production efficiency is lower, and production quality stability is not enough, and generally need rely on very big forming force, and is very high to the device structure requirement, and manufacturing cost is higher, can't effectively satisfy the production needs.

Disclosure of Invention

The invention provides a three-way catalyst shell pressure forming device, aiming at overcoming the defects in the prior art and realizing the high-efficiency, high-quality and low-cost pressure forming of a three-way catalyst shell.

The technical solution of the invention is as follows: the three-way catalyst shell pressure forming device structurally comprises a base and side plates connected with four sides of the base, wherein the top of each side plate is connected with a top plate, the top surface of the base is provided with 4 guide rods connected with the bottom surface of the top plate, the guide rods are connected with guide pipes in a sliding manner, the 4 guide pipes are connected with a lifting plate positioned between the top plate and the base, the center of the lifting plate is provided with a cylindrical outer die holder, the bottom of the outer side of the outer die holder is provided with a circle of steps, the top of the outer die holder penetrates through a center hole of the top plate, a plurality of outer die blocks which are integrally in a circular truncated cone shape are arranged in the center hole of the outer die holder, outer die sections are connected with the inner sides of the outer die sections, a three-way catalyst shell is placed on the inner sides of the outer side surfaces of the three-way catalyst shell and matched with the outer side surfaces of the three-way catalyst shell, a plurality of main push oil cylinders are uniformly arranged on the outer side surface of the circumference, the tops of the main push oil cylinders are fixed on the bottom surface of the top plate, the output ends of the main push oil cylinders are downwards connected with the steps, the lifting plate and the guide pipes of the outer die holder, the rotary rod is established at the whole center of a plurality of outer mould lamella, the centre form is established to the upper portion outside in the rotary rod, the contact of centre form upper portion surface and three way catalyst converter casing bottom medial surface, be connected through the connecting block between upper portion and the centre form in the rotary rod, spacing the installing in spacing seat of centre form bottom side, connecting seat top surface is connected to spacing seat, connecting seat bottom surface is connected at base top surface center, bearing connection connecting seat center is passed through to lower part in the rotary rod, be equipped with the extension board between bearing and the centre form, the rotary rod lower extreme passes the connecting seat and connects the swivel cylinder output.

Preferably, the number of the main push oil cylinders is 12.

Preferably, the contact part of the outer surface of the upper part of the inner die and the inner side surface of the three-way catalyst shell is provided with two rings of annular depressions at intervals from top to bottom.

Preferably, the working method of the three-way catalyst casing pressure forming device includes placing the three-way catalyst casing between the outer mold half and the inner mold, driving the rotating rod to rotate by the rotating cylinder, driving the inner mold to rotate by the rotating rod, driving the three-way catalyst casing to rotate by the inner mold, synchronously extending all the main push cylinders each time, driving the outer mold base to descend by the inclined plane of the outer mold base to push the outer mold block to move inwards, driving the outer mold half to apply forming pressure to the three-way catalyst casing inwards, extruding the three-way catalyst casing into a required shape by matching with the inner mold, returning the main push cylinders after one-time extrusion, continuously driving the three-way catalyst casing to rotate by an angle by the inner mold, descending the main push cylinders again, and circulating for multiple times until the three-way catalyst casing pressure forming is completed.

Preferably, the inner die drives the three-way catalyst shell to rotate 30 degrees at a time.

The invention has the advantages that: structural design is reasonable, and the preferred 12 main hydro-cylinders that push away work in step, pressure forming is stable, effective, and the clearance feeds, and the rotatory jar of cooperation is rotatory in reciprocating, has realized shaping position closed-loop control, realizes high-efficient, high-quality, the low-cost pressure forming of three way catalyst converter casing, very is fit for using widely.

Drawings

Fig. 1 is a schematic structural view of a three-way catalyst housing pressure molding apparatus of the present invention.

In the figure, 1 is a base, 2 is a side plate, 3 is a top plate, 4 is a guide rod, 5 is a guide pipe, 6 is a lifting plate, 7 is an outer die holder, 8 is a main push oil cylinder, 9 is an outer die block, 10 is an outer die clack, 11 is a three-way catalyst shell, 12 is an inner die, 13 is a rotary rod, 14 is a connecting block, 15 is a supporting plate, 16 is a limiting seat, 17 is a connecting seat, and 18 is an annular recess.

Detailed Description

The present invention will be described in further detail with reference to examples and specific embodiments.

As shown in figure 1, the three-way catalyst shell pressure forming device structurally comprises a base 1 and side plates 2 connected with four sides of the base 1, wherein the top of each side plate 2 is connected with a top plate 3, the top surface of the base 1 is provided with 4 guide rods 4 connected with the bottom surface of the top plate 3, the guide rods 4 are slidably connected with guide pipes 5, the 4 guide pipes 5 are connected with a lifting plate 6 positioned between the top plate and the base 1, the center of the lifting plate 6 is provided with a cylindrical outer die holder 7, the bottom of the side of the outer die holder 7 is provided with a circle of steps, the top of the outer die holder 7 penetrates through the central hole of the top plate 3, the central hole of the outer die holder 7 is internally provided with a plurality of outer die blocks 9 which are in a circular truncated cone shape and matched with each other, the inner sides of the outer die blocks 9 are connected with outer die flaps 10, the three-way catalyst shells 11 are placed on the inner sides of the outer die flaps 10 and are matched with the outer side surfaces of the three-way catalyst shells 11 in shape, the outer side surfaces of the outer die holders 7 are uniformly provided with a plurality of main push oil cylinders 8 along the circumferential direction, and the tops of the main push oil cylinders 8 are fixed on the bottom surfaces of the top plates 3, the output end of the main push oil cylinder 8 is downwards connected with the step of the outer die holder 7, the lifting plate 6 and the guide pipe 5, a plurality of outer die segments 10 are integrally provided with a rotating rod 13 at the center, an inner die 12 is arranged on the outer side of the upper part of the rotating rod 13, the outer surface of the upper part of the inner die 12 is contacted with the inner side surface of the bottom end of the three-way catalyst shell 11, the upper part of the rotating rod 13 is connected with the inner die 12 through a connecting block 14, the side surface of the bottom of the inner die 12 is limitedly arranged in a limiting seat 16, the limiting seat 16 is connected with the top surface of a connecting seat 17, the center of the top surface of the base 1 is connected with the bottom surface of the connecting seat 17, the lower part of the rotating rod 13 is connected with the center of the connecting seat 17 through a bearing, a support plate 15 is arranged between the bearing and the inner die 12, and the lower end of the rotating rod 13 passes through the connecting seat 17 to be connected with the output end of a rotating oil cylinder (not shown in the figure).

The number of the main thrust cylinders 8 is preferably 12.

Two rings of annular recesses 18 are arranged at the contact part of the outer surface of the upper part of the inner die 12 and the inner side surface of the three-way catalyst shell 11 from top to bottom at intervals.

According to the structure, when the three-way catalyst casing 11 is placed between the outer die piece 10 and the inner die 12, the rotating oil cylinders drive the rotating rods 13 to rotate, the rotating rods 13 drive the inner die 12 to rotate, the inner die 12 drives the three-way catalyst casing 11 to rotate by one angle (preferably 30 degrees) each time, then all main push oil cylinders 8 (preferably 12) extend synchronously to drive the outer die holder 7 to descend, the inclined plane of the outer die holder 7 descends to push the outer die block 9 to move inwards, the outer die block 9 drives the outer die piece 10 to inwards apply molding pressure to the three-way catalyst casing 11, the three-way catalyst casing 11 is extruded into a required shape by matching with the inner die 12, the main push oil cylinders 8 return after one-time extrusion, the inner die 12 continues to drive the three-way catalyst casing 11 to rotate by one angle, the main push oil cylinders 8 descend again for multiple times in a cycle to complete the pressure molding of the three-way catalyst casing, and the main push oil cylinders 8 of the 12 preferably work synchronously, the clearance is fed, and the reciprocating rotation of the rotating cylinder is matched, so that the closed-loop control of the forming position is realized.

All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The three-way catalytic converter shell pressure forming device is characterized by comprising a base (1) and a side plate (2) connecting the four sides of the base (1), the top of the side plate (2) is connected to the top plate (3), and the base (1) The top surface is provided with four guide rods (4) connected to the bottom surface of the top plate (3), the guide rods (4) are slidably connected to the guide tubes (5), and the four guide tubes (5) are connected between the top plate (3) and the base (1). A cylindrical outer mold base (7) is arranged in the center of the lifting plate (6), a circle of steps is arranged at the side and bottom of the outer mold base (7), and the top of the outer mold base (7) passes through the top plate (3). ) center hole, the center hole of the outer die base (7) is provided with a number of outer modules (9) which are shaped as a truncated cone as a whole, and the inner side of the outer module (9) is connected to the outer die segment (10), and the outer die segment (10) The three-way catalytic converter housing (11) is placed on the inner side and is shaped to fit with the outer surface of the three-way catalytic converter housing (11). The top of the oil cylinder (8) is fixed on the bottom surface of the top plate (3). (10) A rotating rod (13) is arranged in the center of the whole, and an inner mold (12) is arranged on the outer side of the middle upper part of the rotating rod (13), and the upper outer surface of the inner mold (12) is in contact with the inner side of the bottom end of the three-way catalytic converter housing (11). , the middle and upper part of the rotating rod (13) and the inner mold (12) are connected by a connecting block (14), the bottom side of the inner mold (12) is limited and installed in the limit seat (16), and the limit seat (16) is connected The top surface of the connecting seat (17), the center of the top surface of the base (1) is connected to the bottom surface of the connecting seat (17), and the middle and lower parts of the rotating rod (13) are connected to the center of the connecting seat (17) through a bearing. A support plate (15) is provided, and the lower end of the rotating rod (13) is connected to the output end of the rotating oil cylinder through the connecting seat (17).

2 . The three-way catalytic converter casing pressure forming device according to claim 1 , wherein the number of the main thrust cylinders ( 8 ) is 12. 3 .

3. The three-way catalytic converter casing pressure forming device according to claim 2, wherein the contact part of the upper outer surface of the inner mold (12) and the inner surface of the three-way catalytic converter casing (11) is from top to bottom There are two annular recesses (18) spaced apart.

4. The working method of the three-way catalytic converter casing pressure forming device according to any one of claims 1-3, characterized in that the three-way catalytic converter casing (11) is placed on the outer mold segment (10) and the inner mold Between (12), the rotating oil cylinder drives the rotating rod (13) to rotate, the rotating rod (13) drives the inner mold (12) to rotate, and the inner mold (12) drives the three-way catalytic converter housing (11) to rotate, one at a time. angle, and then all the main push cylinders (8) extend synchronously, driving the outer mold base (7) to descend, the outer mold base (7) descends on the slope and pushes the outer module (9) to move inward, and the outer module (9) drives the outer mold segment (9). 10) Apply molding pressure to the three-way catalytic converter housing (11) inwardly, cooperate with the inner mold (12) to extrude the three-way catalytic converter housing (11) into the required shape, and squeeze the main push cylinder (8) after one time. Return to position, the inner mold (12) continues to drive the three-way catalytic converter housing (11) to rotate by an angle, the main thrust cylinder (8) descends again, and the cycle is repeated many times until the three-way catalytic converter housing pressure forming is completed.

5. The working method of the three-way catalytic converter shell pressure forming device according to claim 4, wherein the inner mold (12) drives the three-way catalytic converter shell (11) to rotate 30° each time.