CN213559544U - Sizing mill is used in processing of blast pipe end awl - Google Patents

Abstract

The utility model discloses a sizing mill is used in blast pipe end awl processing belongs to work piece processing equipment field. It comprises a frame; the sizing module is arranged at one end part of the top surface of the rack; the sizing device also comprises a first driving unit which is arranged on the rack, and an output shaft of the first driving unit faces the sizing module; the first transmission unit is arranged between the first driving unit and the sizing module and comprises a first screw rod and a sliding frame; the second driving unit is arranged on the rack, and an output shaft of the second driving unit faces to the other end of the rack; the second transmission unit comprises a second screw rod, a first push plate, a second push plate and a connecting rod; and the fixing tool is arranged in front of the sizing module and used for fixing the end cone of the exhaust pipe to be processed. The utility model discloses each drive unit and transmission unit are when moving, and the orbit can not take place to interfere with the place ahead of sizing module, and the fixed blast pipe end awl of treating processing that can stabilize through fixed frock guarantees the sizing processingquality to blast pipe end awl.

Description

Sizing mill is used in processing of blast pipe end awl

Technical Field

The utility model belongs to work piece processing equipment field, more specifically say, relate to a sizing mill is used in processing of blast pipe end awl.

Background

In the production process of the automobile exhaust pipe, flaring and sizing are an important process, so that a sizing mill is required to be used for processing the automobile exhaust pipe, sizing processing is mainly realized through a sizing module, the sizing module comprises a flaring core, a flaring die, a necking driving ring and the like, and the sizing mill drives the flaring core and the necking driving ring to reciprocate through an oil cylinder structure, so that the flaring die is expanded, the necking die is contracted, and sizing is finished.

In carrying out the sizing course of working to blast pipe end awl, because the particularity of blast pipe end awl structural shape, the blast pipe end awl of processing can't be effectively fixed to conventional sizing mill, can't guarantee sizing processingquality, and conventional sizing mill structure is complicated, under its actuating mechanism and drive mechanism's restriction, also can't be fine install fixed frock additional fixed blast pipe end awl, the sizing of giving blast pipe end awl brings the difficulty.

Through retrieval, the Chinese patent publication number: CN 108405737A; the publication date is as follows: 08 month 17 in 2018; the sizing mill comprises an oil tank and a sizing die, wherein the sizing die comprises an expansion core, a flaring die and a necking die sleeved on the flaring die, the expansion core is provided with a flaring driving part inserted into the flaring die, the flaring die is composed of a plurality of flaring dies arranged along the circumferential direction, the flaring driving part is of an octagonal structure, the flaring driving part is provided with eight driving surfaces arranged along the circumferential direction, the flaring dies are provided with matching surfaces in contact with the driving surfaces, and the driving surfaces and the matching surfaces are planes. The application improves the structure composition of the driving mechanism of the sizing mill, simplifies the structure composition to a certain extent, reduces the cost and the maintenance difficulty, but still cannot effectively solve the problem that the end cone of the exhaust pipe is difficult to process with high quality.

Disclosure of Invention

In order to solve at least one of the above problems, the present invention adopts the following technical solution.

A sizing mill for processing an end cone of an exhaust pipe comprises,

a frame;

the sizing module is arranged at one end part of the top surface of the rack;

further comprising:

the first driving unit is arranged on the rack, and an output shaft of the first driving unit faces the sizing module;

the first transmission unit is arranged between the first driving unit and the sizing module and comprises a first screw rod and a sliding frame, the first screw rod is in transmission connection with an output shaft of the first driving unit, and the sliding frame is in transmission connection with the screw rod; the first driving unit drives the screw rod to rotate to drive the sliding frame to translate, the sliding frame is in transmission connection with the sizing module, and the sizing module is driven to finish flaring action when the sliding frame translates;

the second driving unit is arranged on the rack, and an output shaft of the second driving unit faces to the other end of the rack;

the second transmission unit comprises a second screw rod, a first push plate, a second push plate and a connecting rod; the second screw rod is in transmission connection with an output shaft of the second driving unit and faces the other end of the rack; the first push plate is in transmission connection with the second screw rod and translates under the rotation of the second screw rod; the second push plate is in transmission connection with the sizing module; one end of the connecting rod is fixedly connected with the first push plate, and the other end of the connecting rod is fixedly connected with the second push plate; and the number of the first and second groups,

and the fixing tool is arranged in front of the sizing module and used for fixing the end cone of the exhaust pipe to be processed.

Further, fixed frock includes:

the connecting plate is fixedly connected with the top surface of the rack and horizontally extends to the front of the sizing module;

the limiting boss is fixedly connected to the connecting plate, a bulge is formed upwards by the limiting boss, and the shape of the bulge is matched with that of the inner wall of one end part of the end cone of the exhaust pipe;

the quick clamp is arranged beside the limiting boss and provides force towards the sizing module for the end cone of the exhaust pipe assembled on the limiting boss.

Further, the sizing module includes:

the base plate is arranged at one end part of the top surface of the frame, and the top of the base plate is upwards protruded to form a hanging ring;

the side surface of the expansion core is a conical surface and is arranged in the middle of one end surface of the substrate, and the length direction of the expansion core is vertical to the end surface of the substrate;

the flaring die is sleeved on the side surface of the expanding core and consists of a plurality of flaring die halves with the same shape which are circumferentially arranged around the side surface of the expanding core;

the necking die is sleeved on the outer side surface of the flaring die and consists of a plurality of necking die segments with the same shape which are circumferentially arranged around the outer side surface of the flaring die, and the outer side surface of the necking die is a conical surface;

the throat driving ring is sleeved on the outer side surface of the throat die in a matching manner, the second push plate is in transmission connection with the throat driving ring, and the throat driving ring moves along the direction parallel to the length direction of the expanding core to drive each throat die to move in the radial direction;

the core expanding driving part penetrates through the substrate from the other end face of the substrate and is in transmission connection with the end part, close to the substrate, of the core expanding, the sliding frame is in transmission connection with the core expanding driving part and drives the core expanding to move along the length direction of the core expanding driving part to drive the flaring die to move in the radial direction;

side mounting grooves are formed in two sides of the end part of the rack, which is provided with the base plate, and two sides of the base plate are detachably mounted in the side mounting grooves;

and a suspension arm is arranged above the rack and is positioned right above the substrate, and the suspension arm is matched with the lifting ring to lift the sizing module.

Furthermore, the inner side of the end part of the necking die, which is far away from the substrate, is a necking working part, and the necking working part is detachably connected to the necking die.

Further, the substrate includes:

the first counter bore is arranged in the middle of one end face of the substrate, which is provided with the expansion core;

the second counter bore is formed at the bottom of the first counter bore, and the aperture of the second counter bore is smaller than that of the first counter bore;

the middle hole is formed at the bottom of the second counter bore and penetrates to the other end face of the substrate;

the outer diameter of the first limiting ring piece is the same as the aperture of the first counter bore, the inner diameter of the first limiting ring piece is smaller than the aperture of the second counter bore, the first limiting ring piece is installed in the first counter bore in a matched mode, a limiting space is formed between the first limiting ring piece and the second counter bore, the end portion of the flaring die is limited, and each flaring die can only move in the radial direction;

and the second limiting ring piece is arranged on the end face of the substrate at the periphery of the first counter bore, and forms a limiting space with the first counter bore to limit the end part of the necking die, so that each necking die can only move along the radial direction.

Furthermore, the device also comprises a guide key, wherein the guide key is arranged at the position of the bottom of the second counter bore corresponding to each flaring die; one end face of the limiting ring piece is provided with a guide key corresponding to each necking die piece; key grooves matched with the guide keys are formed in the corresponding positions of the flaring die piece and the necking die piece; all the guide keys are arranged in the radial direction.

Further, still include:

the first resetting piece is arranged in a limiting space formed by the first limiting ring piece and the counter bore and provides centripetal movement force for each flaring die;

and the second resetting piece is arranged in a limiting space formed between the second limiting ring piece and the first counter bore and provides centrifugal motion force for each necking die.

Furthermore, the number of the flaring die sections is eight, and the number of the necking die sections is eight.

Furthermore, both sides of the top surface of the rack and the upper part of the top surface of the rack are respectively provided with a protective net, wherein the protective nets above the top surface of the rack leave a yielding space for disassembling and assembling the sizing module.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a sizing mill is used in blast pipe end awl processing, the structural arrangement is compact, the transmission is simple effectively difficult to the trouble damage, it is all very convenient to maintain, and each drive unit and transmission unit when moving, the movement track can not interfere with the place ahead of sizing module, can be stable fixed through fixed frock the blast pipe end awl of treating processing, guarantee to the sizing processingquality of blast pipe end awl;

(2) the utility model discloses a sizing mill is used in blast pipe end awl processing, the structure of fixed frock can be stable effectual blast pipe end awl to process and fix the centre gripping, and the end of guaranteeing to process can stably stop in the work piece processing station of sizing module when sizing processing, guarantees sizing processingquality;

(3) the utility model discloses a sizing mill is used in blast pipe end awl processing, each structure of sizing module, integrated the installation on the base plate, dismantle the base plate and can pull down sizing module whole, and when the sizing mill carries out sizing processing operation, the direction of drive force all is the horizontal direction, the side mounting groove of frame both sides can cooperate the base plate when realizing sizing module demountable installation, provide reliable spacing support for the sizing module assembled, cooperate the davit above the frame to carry out the dismouting of sizing module and change through the rings at base plate top;

(4) the sizing mill for processing the end cone of the exhaust pipe is provided with the detachable necking working part on the necking die, so that the die set can be conveniently and independently detached and replaced when being worn, the labor consumption during replacement and maintenance is saved, and the cost consumption is also reduced;

(5) the utility model discloses a sizing mill is used in blast pipe end awl processing, the structure of sizing module is constituteed, can be convenient install the dismantlement to each component of sizing module, and the structure after the installation completion can be effectual carry out spacing to the movement track of flaring die lamella and throat die lamella, improves the precision of sizing processing;

(6) the utility model discloses a sizing mill is used in blast pipe end awl processing, under the assistance of guide key, the orbit of flaring die lamella and throat die lamella can further be stably restricted in radial direction, further improves the precision of sizing processing, prolongs the effective life of flaring die lamella and throat die lamella simultaneously;

(7) the utility model discloses a sizing mill for processing an end cone of an exhaust pipe, a first reset piece and a second reset piece are arranged, so that after one-time sizing processing operation is finished, each flaring die section and each necking die section can be reset in time, and the next processing is convenient to be carried out;

(8) the sizing mill for processing the end cone of the exhaust pipe of the utility model sets the number of the flaring die clacks and the necking die clacks to eight, thereby not only ensuring the product quality of sizing processing, but also ensuring the strength of the flaring die clacks and the necking die clacks and ensuring the service life;

(9) the utility model discloses a sizing mill is used in blast pipe end awl processing through the setting of protection network, has carried out effective protection to each drive unit and the drive unit of sizing mill, prevents on the one hand that debris from getting into wherein to interfere each component movement track and leading to the trouble, on the other hand also can prevent effectively that the people from touching the motion component by mistake in sizing processing operation, increases equipment safety in utilization;

(10) the utility model discloses simple structure, reasonable in design easily makes.

Drawings

FIG. 1 is a schematic structural view of a sizing mill for machining an end cone of an exhaust pipe according to the present invention;

FIG. 2 is a schematic view of a half-section structure of a sizing mill for processing an end cone of an exhaust pipe according to the present invention;

FIG. 3 is a schematic view of the nose down angle structure of the sizing mill for processing the end cone of the exhaust pipe of the present invention;

fig. 4 is a schematic structural view of the sizing module of the present invention;

fig. 5 is another view angle structure diagram of the sizing module of the present invention;

FIG. 6 is a schematic view of a half-section structure of the sizing module of the present invention;

FIG. 7 is a schematic view of a half-section structure of the base plate of the present invention;

FIG. 8 is a schematic view of a half-section structure of the utility model after the first limit ring piece and the second limit ring piece are installed;

fig. 9 is a schematic structural view of the fixing tool of the present invention;

FIG. 10 is a schematic view of a half-section of an end cone of the exhaust pipe;

FIG. 11 is a schematic structural view of a sizing mill for processing an end cone of an exhaust pipe according to embodiment 9;

in the figure:

100. a sizing module; 101. a hoisting ring;

200. a frame; 201. a side mounting groove;

300. a first drive unit;

400. a first transmission unit; 401. a first screw rod; 402. a carriage;

500. a second driving unit;

600. a second transmission unit; 601. a second screw rod; 602. pushing a first plate; 603. a second push plate; 604. a connecting rod;

700. a suspension arm;

800. fixing the tool; 801. a connecting plate; 802. a limiting boss; 803. quick clamping;

900. a protective net;

1000. an exhaust pipe end cone;

1. a substrate; 10. a first counter bore; 11. a second counter bore; 12. a middle hole; 13. a first limit ring piece; 14. a second limit ring piece; 15. a guide key;

2. expanding the core;

3. a flaring die; 30. a workpiece machining station;

4. necking die; 40. a necking work section;

5. a throat drive ring;

6. an expansion core driving part.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

The sizing mill for processing the end cone of the exhaust pipe comprises,

a frame 200;

a sizing module 100 mounted at one end of the top surface of the frame 200;

further comprising:

a first driving unit 300 provided on the frame 200, an output shaft of the first driving unit 300 facing the sizing module 100;

the first transmission unit 400 is arranged between the first driving unit 300 and the sizing module 100 and comprises a first screw rod 401 and a sliding frame 402, the first screw rod 401 is in transmission connection with an output shaft of the first driving unit 300, and the sliding frame 402 is in transmission connection with the first screw rod 401; the first driving unit 300 drives the first screw rod 401 to rotate to drive the sliding frame 402 to translate, the sliding frame 402 is in transmission connection with the sizing module 100, and the sizing module 100 is driven to finish flaring when the sliding frame 402 translates;

a second driving unit 500, which is provided on the frame 200, and an output shaft of the second driving unit 500 faces the other end of the frame 200;

the second transmission unit 600 comprises a second screw rod 601, a first push plate 602, a second push plate 603 and a connecting rod 604; the second screw rod 601 is in transmission connection with an output shaft of the second driving unit 500 and faces the other end of the rack 200; the first push plate 602 is in transmission connection with the second screw rod 601 and translates under the rotation of the second screw rod 601; the second push plate 603 is in transmission connection with the sizing module 100; one end of the connecting rod 604 is fixedly connected with the first push plate 602, and the other end is fixedly connected with the second push plate 603; and the number of the first and second groups,

and the fixing tool 800 is arranged in front of the sizing module 100 and is used for fixing the end cone 1000 of the exhaust pipe to be processed.

As shown in fig. 1, 2 and 3, in the present embodiment, the first driving unit 300 is used to drive the flaring operation of the sizing module 100 in cooperation with the first transmission unit 400, and the second driving unit 500 is used to drive the necking operation of the sizing module 100 in cooperation with the second transmission unit 600.

In this embodiment, the first driving unit 300 and the second driving unit 500 are both servo motors, both the servo motors are vertically arranged, and each of the servo motors makes the output shaft direction horizontal to the top surface of the rack 200 through a bevel gear set, wherein the output shaft direction of the first driving unit 300 faces to one end of the rack 200 where the sizing module 100 is installed, the output shaft direction of the second driving unit 500 faces to the other end of the rack 200, both the first driving unit 300 and the second driving unit 500 are arranged in the middle of the rack 200, the first driving unit 300 is arranged close to the sizing module 100, and the second driving unit 500 is arranged far away from the sizing module 100.

In this embodiment, the first transmission unit 400 includes a first lead screw 401 and a carriage 402, wherein the first lead screw 400 is horizontally arranged towards the sizing module 100, the carriage 402 includes a slide rail, a slide seat, a thread bushing and a top rod, the slide rail is arranged towards the sizing module 100 on the top surface of the rack 200, the slide seat is connected to the slide rail in a sliding manner, the middle of the slide seat penetrates through the hole, one end surface of the hole is fixedly connected with the thread bushing, the first lead screw 401 is connected with the thread bushing in a matching manner, the other end surface of the hole is fixedly connected with the top rod, the top rod is a hollow rod, and the front end of the top rod is in; in the use process, the first driving unit 300 is started to drive the first screw rod 401 to rotate, and the sliding seat of the sliding frame 402 is driven to translate along the direction of the sliding rail, so that the mandril drives the expanding core 2 to translate to perform flaring operation; in the rotation process of the first screw rod 401, the sliding seat is opened in the middle and the ejector rod is hollow, so that the sliding seat cannot interfere with the end part of the first screw rod 401 during translation.

In this embodiment, the second transmission unit 600 includes a second screw rod 601, a first push plate 602, a second push plate 603 and a connecting rod 604, wherein the first push plate 602 has an opening in the middle and is provided with a threaded sleeve inside, the second screw rod 601 is connected with the threaded sleeve in a matching manner, and the second push plate 603 is fixedly connected with the necking driving ring 5 of the sizing module 100; in the using process, the second driving unit 500 is started to drive the second screw rod 601 to rotate, the first push plate 602 is driven to translate, and the second push plate 603 also translates in the same direction under the driving of the connecting rod 604, so as to drive the necking driving ring 5 to translate, thereby carrying out necking operation.

Through the sizing mill structure of this embodiment, sizing module 100 is located a frame 200 tip, all the other component structures are all concentrated on frame 200 middle part and another tip, the structural arrangement is compact, the simple effective difficult fault of transmission damages, it is all very convenient to maintain, and each drive unit and the drive unit of this embodiment are when moving, the orbit can not take place to interfere with sizing module 100 the place ahead, consequently, this embodiment will fix frock 800 setting in sizing module 100 the place ahead, the fixed blast pipe end awl 1000 of treating processing that can be stable, guarantee the sizing processingquality to blast pipe end awl 1000 from this.

Example 2

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 1, and the fixing tool 800 comprises:

the connecting plate 801 is fixedly connected with the top surface of the rack 200 and horizontally extends to the front of the sizing module 100;

a limiting boss 802 fixedly connected to the connecting plate 801, wherein the limiting boss 802 is upwardly protruded, and the shape of the protruded part is matched with the shape of the inner wall of one end of the exhaust pipe end cone 1000;

and the quick clamp 803 is arranged beside the limiting boss 802 and provides a force towards the sizing module 100 for the exhaust pipe end cone 1000 assembled on the limiting boss 802.

The exhaust pipe end cone 1000 has a special structural shape, a half-section structure is shown in fig. 10, two port surfaces are not parallel, the whole workpiece has a certain radian, the workpiece cannot be effectively clamped by a conventional clamping and fixing tool in the sizing processing process, the fixing tool 800 is designed in the embodiment as shown in fig. 9, one end of a connecting plate 801 is fixed on the top surface of a frame 200, the other end extends to the front of the bottom of a sizing module 100, a limiting boss 802 is matched with the inner wall of the end surface which is not processed by the exhaust pipe end cone 1000, the limiting boss 802 forms a certain angle with the horizontal plane, when one end of the exhaust pipe end cone 1000 is subjected to sizing processing, the other end can be just sleeved on the limiting boss 802, so that the exhaust pipe end cone 1000 is limited, further, a quick clamp 803 is further arranged beside the limiting boss 802, and the quick clamp 803 is an existing clamp, the manual clamp can accurately position and quickly clamp, the machined end face of the exhaust pipe end cone 1000 is sleeved on the limiting boss 802, and then the quick clamp 803 is manually controlled to abut against the exhaust pipe end cone 1000 and provide force towards the sizing module 100 for the exhaust pipe end cone 1000, so that the friction force of the exhaust pipe end cone 1000 contacting with the limiting boss 802 is strengthened, and the end to be machined can be stably stopped in the workpiece machining position 30 of the sizing module 100 during sizing machining, and the sizing machining quality is ensured.

Example 3

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 2, and the sizing module 100 comprises:

the base plate 1 is arranged at one end part of the top surface of the frame 200, and a lifting ring 101 is formed on the top part of the base plate 1 in an upward protruding mode;

the expanding core 2, the side of which is a conical surface, is arranged in the middle of one end surface of the substrate 1, and the length direction of the expanding core 2 is vertical to the end surface of the substrate 1;

the flaring die 3 is sleeved on the side surface of the expanding core 2, and the flaring die 3 is formed by circumferentially arranging a plurality of flaring die halves with the same shape around the side surface of the expanding core 2;

the necking die 4 is sleeved on the outer side surface of the flaring die 3, the necking die 4 is formed by circumferentially arranging a plurality of necking die segments with the same shape around the outer side surface of the flaring die 3, and the outer side surface of the necking die 4 is a conical surface;

the necking driving ring 5 is sleeved on the outer side surface of the necking die 4 in a matching manner, the second push plate 603 is in transmission connection with the necking driving ring 5, and the necking driving ring 5 moves along the direction parallel to the length direction of the expansion core 2 to drive each necking die to move in the radial direction;

the core expanding driving part 6 penetrates through the substrate 1 from the other end surface of the substrate 1 and is in transmission connection with the end part, close to the substrate 1, of the core expanding 2, the sliding frame 402 is in transmission connection with the core expanding driving part 6, and drives the core expanding 2 to move along the length direction of the core expanding 2 to drive the flaring die to move in the radial direction;

two sides of the end part of the frame 200, where the substrate 1 is installed, are formed with side installation grooves 201, and two sides of the substrate 1 are detachably installed in the side installation grooves 201;

a suspension arm 700 is arranged above the frame 200, the suspension arm 700 is positioned right above the substrate 1, and the suspension arm 700 is matched with the hoisting ring 101 to hoist the sizing module 100.

As shown in fig. 1, 4, 5 and 6, in the sizing module 100 of the present embodiment, the expanding core 2, the flaring die 3 and the necking die 4 are all disposed at the same end surface of the substrate 1, wherein the expanding core 2 is located in the middle of the end surface of the substrate 1, the expanding core 2 of the present embodiment is in a pyramid structure, the number of the side surfaces of the expanding core 2 corresponds to the number of flaring die flaps forming the flaring die 3, so as to provide a uniform and stable flaring acting force when flaring is performed; one end of the flaring die 3 is fixed on the end surface of the substrate 1 in a limiting way, when the core expanding driving piece 6 drives the expanding core 2 to move along the length direction, the side surface of the expanding core 2 interferes with the inner side surface of each flaring die to drive each flaring die to open centrifugally, and the flaring die can only move along the radial direction through the limiting structure of the end part of the flaring die 3 and the end surface of the substrate 1, so that the workpiece to be processed achieves the purpose of flaring processing; in a similar way, one end of the necking die 4 is also fixed on the end surface of the substrate 1 in a limiting way, when the necking driving ring 5 moves to drive each necking die to be subjected to centripetal contraction, the necking die can only move along the radial direction through the limiting structure of the end part of the necking die 4 and the cross section of the substrate 1, and therefore the workpiece to be processed can achieve the purpose of necking processing.

Further, because the expanding core 2, the expanding die 3, the contracting die 4, the contracting driving ring 5 and the expanding core driving piece 6 are directly or indirectly installed on the base plate 1, and the aim of replacing the sizing module 100 can be achieved by detaching or installing the base plate 1, therefore, the top of the base plate 1 of the embodiment is provided with the hanging ring 101, the two side surfaces of the corresponding position of the sizing module 100, which are installed on the frame 200, are formed with the side installation grooves 201, the base plate 1 can be vertically inserted into the side installation grooves 201, because the direction of the driving force is the horizontal direction when the sizing processing operation is carried out, the structure of the side installation grooves 201 can stably limit the base plate 1, thereby the sizing module 100 can stably work after being installed, after the driving force and the necessary connection structure are removed, the base plate 1 can be hung up from the hanging ring 101 through the hanging arm 700 above the frame 200 to replace the sizing module 100, the replaced sizing module 100 is also assembled to the side mounting groove 201 through the suspension arm 700 in cooperation with the hanging ring 101 for subsequent sizing.

The utility model discloses a sizing module 100 structure, integrated the installation is on base plate 1, dismantle base plate 1 and can pull down sizing module 100 is whole, and the sizing mill of this embodiment carries out sizing processing operation, the direction of drive force all is the horizontal direction, the side mounting groove 201 of frame 200 both sides can cooperate base plate 1 when realizing sizing module 100 demountable installation, provide reliable spacing support for assembled sizing module 100, rings 101 through base plate 1 top cooperate frame 200 top davit 700 to carry out the dismouting change of sizing module 100.

During sizing, no component moves in front of the sizing module 100, so that interference with the fixing tool 800 is avoided, and the processing quality of the exhaust pipe end cone 1000 is not affected.

Example 4

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 3, wherein the inner side of the end part of the necking die 4 far away from the substrate 1 is provided with a necking working part 40, and the necking working part 40 is detachably connected to the necking die 4.

A gap is reserved between the outer side surface of the flaring die 3 and the inner side surface of the reducing die 4, the gap between the end parts of the flaring die 3 and the reducing die 4 far away from the substrate 1 is used for placing a workpiece to be processed, which is called a workpiece processing station 30, when sizing processing is carried out, except that the expanding core 2 and the reducing driving ring 5 are easy to wear, the flaring die 3 and the reducing die 4 near the workpiece processing station 30 are also easy to damage, when the existing sizing module is damaged, only the flaring die 3 or the reducing die 4 can be integrally replaced, and the whole disassembly is required during replacement, so that the replacement cost is high, time and labor are wasted, the improved structure of the embodiment is that the reducing working part 40 is detachably arranged on the reducing die 4, namely, one part of each reducing die is a detachable reducing working part 40, and more specifically, the reducing working part 40 is detachably connected with each reducing die through a bolt structure, in the sizing processing process, once the necking working part 40 at a certain position is found to be damaged, only the necking working part 40 at the position is replaced by detaching the bolt without integrally detaching the whole necking die or the sizing module 100, so that the labor consumption in the replacement and maintenance process is saved, and the cost consumption is reduced.

Similarly, the end of the flaring die 3 near the workpiece processing station 30 can also be provided with a detachable flaring working part, and when the flaring die 3 is damaged, the flaring die can be detached and replaced independently.

Example 5

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 4, and the substrate 1 includes:

the counter bore I10 is arranged in the middle of one end face of the substrate 1, which is provided with the expansion core 2;

the second counter bore 11 is formed at the bottom of the first counter bore 10, and the aperture of the second counter bore 11 is smaller than that of the first counter bore 10;

the middle hole 12 is formed at the bottom of the second counter bore 11 and penetrates through the other end face of the substrate 1;

the outer diameter of the first limiting ring piece 13 is the same as the aperture of the first counter bore 10, the inner diameter of the first limiting ring piece is smaller than the aperture of the second counter bore 11, the first limiting ring piece 13 is installed in the first counter bore 10 in a matched mode, a limiting space is formed between the first limiting ring piece and the second counter bore 11, and the end portion of the flaring die 3 is limited, so that each flaring die can only move in the radial direction;

and the second limiting ring piece 14 is arranged on the end surface of the substrate 1 at the periphery of the first counter bore 10, forms a limiting space with the first counter bore 10, and limits the end part of the necking die 4 so that each necking die can only move along the radial direction.

As shown in fig. 7 and 8, in order to stably and effectively perform the sizing operation, the motion trajectories of the flaring die and the necking die need to be effectively limited, and this embodiment shows a specific structural form of a limiting structure between the end of the flaring die 3 and the end surface of the substrate 1 and a specific form of a limiting structure between the end of the necking die 4 and the cross section of the substrate 1.

After the end parts of the flaring die halves forming the flaring die 3 are placed in the counter bore II 11, the limiting ring piece I13 is installed, the flaring die halves extend out of a through hole in the middle of the limiting ring piece I13, and the end parts of the flaring die halves cannot move in the direction parallel to the length direction of the expanding core 2 under the limitation of the limiting ring piece I13 and the bottom of the counter bore II 11 and can only move in the radial direction under the driving of the expanding core 2.

Similarly, the end parts of each necking die section forming the necking die 4 are arranged in a space formed by the second limit ring member 14 and the first limit ring member 13 in the first counter bore 10, the necking die sections extend out of the through hole in the middle of the second limit ring member 14, and the end parts of the necking die sections cannot move in the direction parallel to the length direction of the expansion core 2 under the limitation of the limit space and can only move along the radial direction under the driving of the expansion core 2.

Through the structure of this embodiment, each component to sizing module 100 that can be convenient is installed and is dismantled, and the structure after the installation is accomplished can be effectual carries on spacingly to the motion trail of flaring die lamella and throat die lamella, improves the precision of sizing processing.

Example 6

The sizing mill for machining the end cone of the exhaust pipe is further improved on the basis of the embodiment 5, and further comprises a guide key 15, wherein the guide key 15 is arranged at the position, corresponding to each flaring die, of the hole bottom of the counter bore II 11; a guide key 15 is arranged at the position of the end face of the first limit ring piece 13 corresponding to each necking die; key grooves matched with the guide keys 15 are formed in the corresponding positions of the flaring die piece and the necking die piece; all the guide keys 15 are arranged in the radial direction.

As shown in fig. 6, 7 and 8, key grooves are formed in the hole bottom of the counter bore two 11 and the corresponding positions of the flaring die piece, key grooves are formed in the end face of the limit ring piece one 13 and the corresponding positions of the necking die piece, long keys arranged along the radial direction in the length direction are used as guide keys 15 to be matched with the key grooves for installation, the movement tracks of the flaring die piece and the necking die piece can be further stably limited in the radial direction with the aid of the guide keys 15, the sizing precision is further improved, and the effective service life of the flaring die piece and the necking die piece is prolonged.

Example 7

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 6, and further comprises:

the first resetting piece is arranged in a limiting space formed between the first limiting ring piece 13 and the second counter bore 11 and provides centripetal movement force for each flaring die flap;

and the second resetting piece is arranged in a limiting space formed between the second limiting ring piece 14 and the first counter bore 10 and provides centrifugal motion force for each necking die.

After a sizing processing technology is finished, the necking driving ring 5 and the core expanding driving piece 6 can reset to be processed by next sizing processing operation, the flaring die 3 at the moment is in a centrifugal opening state, the necking die 4 is in a centripetal tightening state, a reset piece is needed to reset each flaring die, and the necking die resets to reserve a workpiece processing station 30 for placing a workpiece to be processed.

Similarly, one end of a spring of the second reset piece is fixed on the inner side wall of the second limit ring piece 14, the other end of the spring of the second reset piece is fixed on the side face of the end part of the necking die, the spring of the second reset piece is in an extension state, and after the necking operation is finished, the necking driving ring 5 is reset, and the necking die is reset to the original position under the action of the deformation restoring force of the spring.

Example 8

The sizing mill for processing the end cone of the exhaust pipe of the embodiment is further improved on the basis of the embodiment 7, the number of the flaring die flaps and the necking die flaps is less, the poorer the shape quality of a workpiece to be processed after sizing processing is, the more indentations are formed on the side wall of the pipe fitting and the pipe fitting cannot be in a standard round shape, but the more the number of the flaring die flaps or the necking die flaps is, the greater the intensity of each die flap can be greatly reduced, the higher the failure probability in the sizing processing operation process is, and the damage is easy.

Example 9

The sizing mill for processing the end cone of the exhaust pipe in the embodiment is further improved on the basis of the embodiment 8, protective nets 900 are arranged on two sides of the top surface of the rack 200 and above the top surface of the rack, wherein the protective nets 900 above the top surface of the rack 200 leave a space for avoiding the disassembly and assembly of the sizing module 100.

As shown in fig. 11, in the present embodiment, through the arrangement of the protection net 900, each driving unit and each transmission unit of the sizing mill are effectively protected, so that on one hand, impurities are prevented from entering into the protection net to interfere with the motion tracks of each component to cause a fault, on the other hand, people can be effectively prevented from touching the motion components by mistake in the sizing processing operation, and the use safety of the equipment is improved.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims (9)

1. A sizing mill for processing an end cone of an exhaust pipe comprises,

a frame;

the sizing module is arranged at one end part of the top surface of the rack;

it is characterized by also comprising:

the first driving unit is arranged on the rack, and an output shaft of the first driving unit faces the sizing module;

the first transmission unit is arranged between the first driving unit and the sizing module and comprises a first screw rod and a sliding frame, the first screw rod is in transmission connection with an output shaft of the first driving unit, and the sliding frame is in transmission connection with the screw rod; the first driving unit drives the screw rod to rotate to drive the sliding frame to translate, the sliding frame is in transmission connection with the sizing module, and the sizing module is driven to finish flaring action when the sliding frame translates;

the second driving unit is arranged on the rack, and an output shaft of the second driving unit faces to the other end of the rack;

the second transmission unit comprises a second screw rod, a first push plate, a second push plate and a connecting rod; the second screw rod is in transmission connection with an output shaft of the second driving unit and faces the other end of the rack; the first push plate is in transmission connection with the second screw rod and translates under the rotation of the second screw rod; the second push plate is in transmission connection with the sizing module; one end of the connecting rod is fixedly connected with the first push plate, and the other end of the connecting rod is fixedly connected with the second push plate; and the number of the first and second groups,

and the fixing tool is arranged in front of the sizing module and used for fixing the end cone of the exhaust pipe to be processed.

2. The sizing mill for processing the end cone of the exhaust pipe according to claim 1, wherein the fixing tool comprises:

the connecting plate is fixedly connected with the top surface of the rack and horizontally extends to the front of the sizing module;

the limiting boss is fixedly connected to the connecting plate, a bulge is formed upwards by the limiting boss, and the shape of the bulge is matched with that of the inner wall of one end part of the end cone of the exhaust pipe;

the quick clamp is arranged beside the limiting boss and provides force towards the sizing module for the end cone of the exhaust pipe assembled on the limiting boss.

3. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 2, wherein the sizing module comprises:

the base plate is arranged at one end part of the top surface of the frame, and the top of the base plate is upwards protruded to form a hanging ring;

the side surface of the expansion core is a conical surface and is arranged in the middle of one end surface of the substrate, and the length direction of the expansion core is vertical to the end surface of the substrate;

the flaring die is sleeved on the side surface of the expanding core and consists of a plurality of flaring die halves with the same shape which are circumferentially arranged around the side surface of the expanding core;

the necking die is sleeved on the outer side surface of the flaring die and consists of a plurality of necking die segments with the same shape which are circumferentially arranged around the outer side surface of the flaring die, and the outer side surface of the necking die is a conical surface;

the throat driving ring is sleeved on the outer side surface of the throat die in a matching manner, the second push plate is in transmission connection with the throat driving ring, and the throat driving ring moves along the direction parallel to the length direction of the expanding core to drive each throat die to move in the radial direction;

the core expanding driving part penetrates through the substrate from the other end face of the substrate and is in transmission connection with the end part, close to the substrate, of the core expanding, the sliding frame is in transmission connection with the core expanding driving part and drives the core expanding to move along the length direction of the core expanding driving part to drive the flaring die to move in the radial direction;

side mounting grooves are formed in two sides of the end part of the rack, which is provided with the base plate, and two sides of the base plate are detachably mounted in the side mounting grooves;

and a suspension arm is arranged above the rack and is positioned right above the substrate, and the suspension arm is matched with the lifting ring to lift the sizing module.

4. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 3, wherein: the inner side of the end part of the necking die, which is far away from the substrate, is provided with a necking working part, and the necking working part is detachably connected to the necking die.

5. The sizing mill for processing an end cone of an exhaust pipe according to claim 4, wherein the base plate comprises:

the first counter bore is arranged in the middle of one end face of the substrate, which is provided with the expansion core;

the second counter bore is formed at the bottom of the first counter bore, and the aperture of the second counter bore is smaller than that of the first counter bore;

the middle hole is formed at the bottom of the second counter bore and penetrates to the other end face of the substrate;

the outer diameter of the first limiting ring piece is the same as the aperture of the first counter bore, the inner diameter of the first limiting ring piece is smaller than the aperture of the second counter bore, the first limiting ring piece is installed in the first counter bore in a matched mode, a limiting space is formed between the first limiting ring piece and the second counter bore, the end portion of the flaring die is limited, and each flaring die can only move in the radial direction;

and the second limiting ring piece is arranged on the end face of the substrate at the periphery of the first counter bore, and forms a limiting space with the first counter bore to limit the end part of the necking die, so that each necking die can only move along the radial direction.

6. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 5, wherein: the guide key is arranged at the position of the bottom of the second counter bore corresponding to each flaring die; one end face of the limiting ring piece is provided with a guide key corresponding to each necking die piece; key grooves matched with the guide keys are formed in the corresponding positions of the flaring die piece and the necking die piece; all the guide keys are arranged in the radial direction.

7. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 6, further comprising:

the first resetting piece is arranged in a limiting space formed by the first limiting ring piece and the counter bore and provides centripetal movement force for each flaring die;

and the second resetting piece is arranged in a limiting space formed between the second limiting ring piece and the first counter bore and provides centrifugal motion force for each necking die.

8. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 7, wherein: the flaring die sections are eight, and the necking die sections are eight.

9. The sizing mill for processing the end cone of the exhaust pipe as recited in claim 8, wherein: both sides of the top surface of the rack and the upper part of the top surface of the rack are respectively provided with a protective net, wherein the protective nets above the top surface of the rack leave yielding spaces for disassembling and assembling the sizing module.

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