CN110814191B

CN110814191B - Full-automatic pipe expanding machine and pipe expanding method

Info

Publication number: CN110814191B
Application number: CN201911159319.8A
Authority: CN
Inventors: 胡荣丽; 黄金; 敖磊; 黄飞翔
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-11-09
Anticipated expiration: 2039-11-22
Also published as: CN110814191A

Abstract

The invention discloses a fully automatic pipe flaring machine and a pipe flaring method, comprising an automatic loading and unloading device, a lifting and clamping mechanism, a flaring mechanism and an axial alignment mechanism, and each mechanism is modularly designed; The inner bottom of the hopper is provided with a sloping surface, the side wall of the hopper is provided with a feeding port that communicates with the lower end of the sloping surface, and a paddle that can be rotated up and down is provided below the feeding port; an elastic reset mechanism is set between the bottom surface of the paddle and the outer side of the bottom of the hopper. ;There is a rotary table under the dial, and a rotary table shaft is provided on the rotary table, and the two ends of the rotary table shaft are fixedly connected to the rotary table. During the process of driving the rotary table to rotate outward, the card can be made to fall to the rotary table by its own weight from the dial. The pipes on the trough arrive at the feeding station, the processing station and the unloading station in turn. The pipe flaring method adopts the fully automatic flaring machine of the present invention to carry out flaring. The invention reduces costs while improving the degree of automation, more stable quality control of the flaring, and higher production efficiency.

Description

Full-automatic pipe expanding machine and pipe expanding method

Technical Field

The invention belongs to the field of machining equipment, and particularly relates to equipment and a flaring method for automatically flaring pipes such as steel pipes, copper pipes and the like.

Background

The flaring machine is widely applied in the field of mechanical manufacturing. The wall thickness of the pipe used in the air-conditioning household appliance industry is thinner, generally between 1 mm and 1.5mm, and in the field, a special pipe flaring machine is generally adopted for flaring. Because the wall thickness of the pipe is thin and the copper has good ductility, the flaring can be easily performed by using a male die reaming method. Because of the advantages of high efficiency, good flaring quality and the like of the pipe flaring machine, the pipe flaring machine is widely applied in the air conditioning industry, and at present, a plurality of manufacturers specially designed and produced various pipe flaring machines are provided. The existing pipe flaring machine has different automation degrees, different principles, different flaring diameters and different mechanical properties. These processes, however, have the following problems: the traditional pipe flaring machine has low automation degree, and the production efficiency is low due to manual feeding and discharging; a large amount of manual operation is needed, so that the quality stability of the product is poor; high production cost and is not beneficial to batch production.

Although the existing flaring machine is widely applied, the application of the flaring machine withstands the examination of engineering practice, particularly the application of the automatic flaring machine, the production efficiency and the product quality are greatly improved, the production cost is also reduced, and the flaring machine plays a great role in the aspects of household appliance manufacturing, aviation, medical appliances and the like in China. However, the tube expanding machine used at present still has the following two problems:

(1) for a large-scale automatic flaring machine, due to the fact that the design is complex, knowledge of subjects such as machinery, electricity and microelectronics is integrated, the price of the flaring machine is generally high, compared with the traditional pipe flaring equipment, the cost of the flaring machine is high in period and maintenance cost, and for enterprises, the cost can be expected to be reduced.

(2) The manual pipe expanding machine which is partially used at present has unreliable performance, poor expanding quality, high rejection rate and low efficiency. The quality of the produced workpiece is determined by the state and experience of workers, which has high requirements on the quality of the workers and has high labor intensity for the workers.

Because of the existence of above-mentioned two problems, each flaring machine producer all seeks to research and develop a novel tubular product flaring machine that efficient, reliable operation, simple structure, maintenance are easy, can effectively reduce the price simultaneously.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the full-automatic pipe flaring machine which improves the automation degree, reduces the cost, controls the flaring quality more stably and has higher production efficiency.

In order to solve the technical problems, the technical scheme of the invention is as follows: a full-automatic pipe flaring machine comprises an automatic feeding and discharging device, wherein the automatic feeding and discharging device comprises a hopper, the bottom in the hopper is provided with a slope surface, the side wall of the hopper is provided with a material passing hole communicated with the lower end of the slope surface, and a shifting piece capable of rotating up and down is arranged below the material passing hole; the front end of the shifting piece is upwarped to form a blocking piece, the rear end of the shifting piece is rotatably connected to a horizontal rotating shaft, and the horizontal rotating shaft is connected with a shifting piece bracket fixed on the outer side surface of the bottom of the hopper; an elastic reset mechanism is arranged between the bottom surface of the shifting piece and the outer side surface of the bottom of the hopper, and the elastic reset mechanism enables the shifting piece to automatically turn upwards after being pressed to turn downwards; a rotary worktable is arranged below the plectrum, a rotary table motor and a rotary table shaft parallel to the material passing port are arranged on the rotary worktable, and the rotary table motor outputs power to the rotary table shaft through a transmission mechanism; the two ends of the turntable shaft are fixedly connected with turntables, and clamping grooves with uniform intervals are distributed on the peripheral edges of the turntables; when the turntable shaft drives the turntable to rotate outwards, the pipe falling from the shifting piece onto the clamping groove of the turntable by means of self weight can sequentially reach a feeding station, a processing station and a discharging station;

the lifting clamping mechanism is arranged on one side of the rotary workbench relative to the hopper; the lifting clamping mechanism comprises a lifting column and a cover plate; the lower end of the lifting column is fixed on a frame bottom plate of the rotary workbench, the upper end of the lifting column is fixedly connected with a cover plate, and the inner side of the cover plate extends to be right above a feeding station of the rotary table; and two ends of the rotary worktable are respectively provided with a flaring mechanism and an axial alignment mechanism.

Preferably, a material receiving groove positioned below the blanking station is arranged on the outer side of the rotary workbench; connect silo one end to support and connect the silo can rotate from top to bottom for the rigidity post through the rigidity post, connect the silo other end to support through the elastic column.

Preferably, an arrangement mechanism for screening and adjusting the position of the pipe is arranged in the hopper; the sorting mechanism comprises an upper layer blocking rod, a middle layer blocking rod and a lower layer blocking rod which are respectively arranged at the upper part of a feed port of the hopper, the middle part of the hopper and the bottom of the hopper, the upper layer blocking rod and the middle layer blocking rod respectively comprise a plurality of blocking rods arranged side by side at intervals, the lower layer blocking rod comprises a plurality of blocking rods arranged along a slope at intervals, and each blocking rod is parallel to the turntable shaft.

Preferably, one end of the hopper is supported by a rack top plate of the rotary workbench, and the other end of the hopper is supported on the ground by an upright post; the lifting clamping mechanism is detachably connected to a rack bottom plate of the rotary workbench through a bolt; the equal fixedly connected with joint board in frame bottom plate both ends of swivel work head, flaring mechanism all are equipped with the base bottom of axial counterpoint mechanism and are used for the joint mouth of joint board, swivel work head both ends respectively with flaring mechanism and axial counterpoint mechanism joint and fix the joint board on the joint mouth through the bolt.

Preferably, one end of the hopper is fixedly connected with the blocking rod, and the end face and the front side and the rear side of the other end of the hopper are both in sliding connection with the blocking rod, so that one end of the hopper can move along the axis of the blocking rod according to the length of the pipe, and the end face and the front side and the rear side of the hopper are fastened through screws.

Preferably, the axial alignment mechanism comprises a base bottom plate, a base top plate is connected to the base bottom plate through a cylinder, a roller and a roller motor for driving a roller shaft to rotate are arranged on the base top plate of the axial alignment mechanism, the axis of the roller shaft is perpendicular to the axis of the turntable shaft, and the roller is opposite to the processing station; the axial alignment mechanism further comprises a limiting column arranged on the top surface of the base of the flaring mechanism, the limiting column is located between the flaring head and the rotary workbench, the top end of the limiting separation blade is as high as the axial lead of the flaring head, the limiting column is hollow and is provided with a pressure spring, the lower end of the pressure spring is fixed in the limiting column, the upper end of the pressure spring is connected with the limiting separation blade, the lower end of the limiting separation blade is arranged in the limiting column, and the top end of the limiting separation blade extends upwards to be as high as the axial lead of the flaring head.

The invention also provides a pipe flaring method, and by adopting the full-automatic pipe flaring machine disclosed by the invention, the width of the material passing port is less than twice of the diameter of the pipe, so that the material passing port can only pass through one pipe at a time, and the pipes falling onto the shifting sheet are in a single-layer parallel state. The method comprises the following steps:

step 1: the pipe falls to the shifting sheet from the hopper under the action of gravity, and the shifting sheet is pressed downwards; meanwhile, the turntable rotates outwards, namely towards the direction of the lifting clamping mechanism; when the turntable shaft rotates to the separation blade at the front end of the shifting piece opposite to the V-shaped groove of the turntable, the separation blade is enabled to be horizontal along with the downward turning of the shifting piece, and the workpiece at the front end naturally falls onto the V-shaped groove of the turntable under the action of gravity to complete workpiece feeding. Meanwhile, because the whole weight of the workpiece is reduced, the shifting piece automatically turns upwards under the action of the elastic reset mechanism, so that the rest workpieces are prevented from falling down successively.

Step 2: the turntable continues to rotate outwards to drive the pipe in the clamping groove to rise to the highest position and reach a processing station;

and step 3: when the workpiece rotates to a processing station along with the turntable shaft, the base top plate of the axial alignment mechanism rises under the driving of the cylinder and enables the roller to just contact with the pipe, and the roller drives the pipe to move axially so that the pipe reaches the axial stroke range of the flaring mechanism;

and 4, step 4: the turntable stops rotating; the lifting clamping mechanism descends the cover plate until the pipe is tightly pressed on the clamping groove;

and 5: the flaring head of the flaring mechanism axially punches the end part of the pipe to enlarge the pipe diameter of the end part of the pipe, thereby completing flaring;

step 6: the lifting clamping mechanism lifts the cover plate to release the pressing state of the pipe; then, the turntable continues to rotate outwards, and feeding is carried out while discharging;

and 7: and (5) repeating the steps 1 to 6 until the processing task is completed.

Compared with the prior art, the invention has the following advantages:

1. the automatic feeding and discharging device completes feeding of the workpiece by means of gravity: work piece slope from the hopper naturally glides under the action of gravity, reach the plectrum through the material mouth, can be many work pieces drop on the plectrum simultaneously, the work piece pushes down the plectrum (construct the extrusion to elasticity reset machine simultaneously), the separation blade of plectrum front end prevents that the work piece from directly dropping on the carousel on the swivel work head, when the carousel axle rotates the carousel V type groove just to the separation blade of plectrum front end, make the separation blade turn over down along with the plectrum and tend to the level, then the work piece of foremost falls down naturally under the action of gravity on carousel V type groove, accomplish work piece material loading. Meanwhile, because the whole weight of the workpiece is reduced, the shifting piece automatically turns upwards under the action of the elastic reset mechanism, so that the rest workpieces are prevented from falling down successively. Therefore, the whole feeding process is orderly carried out, and only one workpiece is fed at a time.

2. The work piece can just fall on the clamping groove below the shifting piece by adjusting the working beat of the turntable, and the work piece is a feeding station; the turntable rotates outwards to drive the workpiece in the clamping groove to rise to the highest position, which is a processing station; the carousel continues to outwards rotate, drives the work piece decline in the draw-in groove until the work piece can fall naturally under the action of gravity, this is the unloading station. Through coordinating the working beats of all mechanisms of the full-automatic pipe expanding machine, the feeding and the discharging can be simultaneously carried out, and the production efficiency is improved.

3. The elastic support columns have a damping effect, the workpiece falls onto the material receiving groove, the elastic support columns are compressed, one end of the material receiving groove is matched to rotate downwards, the material receiving groove is inclined, and therefore the workpiece can slowly slide downwards from the material receiving groove, and impact is reduced.

4. The interval between the arrangement mechanisms can screen the feeding direction of the pipes, and because each blocking rod is parallel to the turntable shaft, the upper blocking rod enables the workpiece to enter the hopper only in a posture parallel to the turntable shaft, and the middle blocking rod and the lower blocking rod further adjust the position of the pipes, so that the pipes are kept in a posture parallel to the turntable shaft.

5. The front end face and the side face on the right side of the hopper are connected with the blocking rod in a sliding mode, so that the front end face and the side face on the right side of the hopper can move along the axis of the blocking rod according to the length of the pipe, the length of the material passing port can be adjusted, and the material passing port can adapt to pipes with different lengths.

6. According to the full-automatic pipe flaring machine, the flaring machining process of the workpiece can be automatically completed through the cooperation of the automatic feeding and discharging device, the axial alignment mechanism, the lifting clamping mechanism and the flaring mechanism, manual intervention is not needed, and the automation level is improved. Because the automatic feeding and discharging device completes feeding and discharging by means of gravity, complex and expensive equipment such as a manipulator and the like is not needed, and the production cost is greatly reduced.

7. The all mechanisms of the full-automatic pipe expanding machine adopt modular design, the all mechanisms form detachable connection, and the processing, the transportation and the assembly are very convenient.

8. The flaring method can efficiently carry out continuous production through the coordination and the coordination of all mechanisms, and has accurate positioning and high processing precision; the feeding and discharging rely on the action of gravity, so that energy is greatly saved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a fully automatic pipe expanding machine;

FIG. 2 is an assembly view of the rotary table and the elevation clamp mechanism;

FIG. 3 is a schematic structural view of an automatic loading and unloading apparatus;

FIG. 4 is an enlarged partial view of the paddle;

FIG. 5 is a right side view of FIG. 4;

FIG. 6 is a schematic structural view of a flaring mechanism;

fig. 7 is a schematic structural view of the axial alignment mechanism.

Detailed Description

Referring to fig. 1 and 3, a fully automatic pipe expanding machine includes an automatic loading and unloading device 1; the lifting clamping mechanism 4 is arranged on one side of the rotary workbench relative to the hopper 102; the lifting clamping mechanism 4 comprises a lifting column 401 and a cover plate 402; the lower end of the lifting column 401 is fixed on a bottom plate of a machine frame of the rotary workbench 2, the upper end of the lifting column 401 is fixedly connected with a cover plate 402, and the inner side of the cover plate 402 extends to a position right above a feeding station of the turntable 202; two ends of the rotary worktable 2 are respectively provided with a flaring mechanism 5 and an axial contraposition mechanism 6.

Each mechanism of the full-automatic pipe expanding machine adopts modular design and forms detachable connection among the mechanisms: one end of the hopper 102 is supported by a top plate of a frame of the rotary workbench 2, and the other end of the hopper 102 is supported on the ground by an upright post; the lifting clamping mechanism 4 is detachably connected to a rack bottom plate of the rotary workbench 2 through bolts; the equal fixedly connected with joint board 204 in frame bottom plate both ends of swivel work head 2, flaring mechanism 5 all is equipped with the base bottom of axial counterpoint mechanism 6 and is used for the joint mouth of joint board, swivel work head 2 both ends respectively with flaring mechanism 5 and the 6 joints of axial counterpoint mechanism and fix the joint board on the joint mouth through the bolt.

According to the full-automatic pipe flaring machine, the flaring machining process of a workpiece can be automatically completed through the cooperation of the automatic feeding and discharging device 1, the axial alignment mechanism 6, the lifting clamping mechanism 4 and the flaring mechanism 5, manual intervention is not needed, and the automation level is improved. Because the automatic feeding and discharging device completes feeding and discharging by means of gravity, complex and expensive equipment such as a manipulator and the like is not needed, and the production cost is greatly reduced.

The respective mechanisms will be explained below.

Automatic loading and unloading device:

referring to fig. 2 and 3, the automatic loading and unloading device includes a hopper 102, a slope surface is disposed at the bottom of the hopper 102, a material passing port communicated with the lower end of the slope surface is disposed on the side wall of the hopper 102, and a shifting plate 101 capable of rotating up and down is disposed below the material passing port; the front end of the shifting piece 101 is upwards warped to form a blocking piece 1011, the rear end of the shifting piece 101 is rotatably connected to a horizontal rotating shaft 1012, and the horizontal rotating shaft 1012 is connected with a shifting piece bracket fixed on the outer side surface of the bottom of the hopper 102; an elastic reset mechanism is arranged between the bottom surface of the shifting piece and the outer side surface of the bottom of the hopper, and the elastic reset mechanism enables the shifting piece 101 to automatically turn upwards after being pressed to turn downwards; a rotary worktable 2 is arranged below the plectrum 101, a rotary table motor and a rotary table shaft 201 parallel to the material passing port are arranged on the rotary worktable 2, and the rotary table motor outputs power to the rotary table shaft 201 through a transmission mechanism; the two ends of the turntable shaft 201 are fixedly connected with the turntables 202, and the peripheral edges of the turntables are distributed with clamping grooves at even intervals; in the process that the turntable shaft 201 drives the turntable 202 to rotate outwards, the pipe falling from the plectrum 101 to the clamping groove of the turntable 202 by means of self weight can sequentially reach the feeding station, the processing station and the discharging station.

The automatic feeding and discharging device completes feeding of the workpiece by means of gravity: the workpiece naturally slides down from the slope surface in the hopper 102 under the action of gravity and reaches the shifting piece 101 through the material opening, because the width of the material passing opening is smaller than twice of the diameter of the pipe, the material passing opening can only pass through one pipe at each time, the pipe is in a single-layer side-by-side state and falls onto the shifting piece 101, the shifting piece 101 is pressed down by the workpiece (meanwhile, the elastic resetting machine is constructed to extrude), the blocking piece 1011 at the front end of the shifting piece 101 prevents the workpiece from directly falling onto the turntable 202 on the rotary workbench 2, especially prevents a plurality of workpieces from falling simultaneously, when the turntable shaft rotates to the V-shaped groove of the turntable to just face the blocking piece 1011 at the front end of the shifting piece, the blocking piece tends to be horizontal along with the downward turning of the shifting piece 101, the workpiece at the most front end naturally falls onto the groove of the turntable 202 under the action of gravity, and workpiece feeding is completed. Meanwhile, due to the fact that the whole weight of the workpiece is reduced, the poking piece 101 is automatically turned upwards under the action of the elastic reset mechanism, and therefore the rest workpieces are prevented from falling down in succession. Therefore, the whole feeding process is orderly carried out, and only one workpiece is fed at a time.

The clamping groove on the turntable 202 is a V-shaped clamping groove; the elastic liner is bonded on the inner surface of the clamping groove, so that the surface friction force is increased, the workpiece is protected and is not easy to damage and fall off.

Referring to fig. 4 and 5, the elastic restoring mechanism includes a torsion spring 1013 sleeved on a horizontal shaft, one end of the torsion spring 1013 presses against the bottom surface of the pick, and the other end of the torsion spring 1013 presses against the outer side surface of the bottom of the hopper.

A material receiving groove 3 positioned below the blanking station is arranged on the outer side of the rotary workbench 2; the material receiving groove 3 is supported by the rigid column 301 at one end, the material receiving groove 3 can rotate up and down relative to the rigid column, and the material receiving groove 3 is supported by the elastic column 302 at the other end. Elastic column 302 has the damping effect, and the work piece drops on connecing silo 3, compresses elastic column 302, and the cooperation again connects 3 one ends of silo to rotate downwards, connects silo 3 to take place the slope to make the work piece can follow and connect silo 3 to go up slowly and slide down, reduce the striking.

An arrangement mechanism for screening and adjusting the position of the pipe is arranged in the hopper 102; the sorting mechanism comprises an upper layer blocking rod, a middle layer blocking rod and a lower layer blocking rod which are respectively arranged at the upper part of a feeding hole of the hopper 102, the middle part of the hopper 102 and the bottom of the hopper 102, the upper layer blocking rod and the middle layer blocking rod respectively comprise a plurality of blocking rods which are arranged side by side at intervals, the lower layer blocking rod comprises a plurality of blocking rods which are arranged along a slope at intervals, and each blocking rod is parallel to the turntable shaft 201. The interval between the arrangement mechanisms can screen the feeding direction of the pipes, and because each blocking rod is parallel to the turntable shaft 201, the upper blocking rod enables the workpiece to enter the hopper 102 only in a posture parallel to the turntable shaft 201, and the middle blocking rod and the lower blocking rod further adjust the position of the pipes, so that the pipes are kept in a posture parallel to the turntable shaft 201.

One end of the hopper 102 is fixedly connected with the blocking rod, and the end face and the front and rear side faces of the other end of the hopper are in sliding connection with the blocking rod, so that one end of the hopper 102 can move along the axis of the blocking rod according to the length of a pipe, and the end face and the front and rear side faces of the hopper are fastened through screws. The front end face and the side face on the right side of the hopper are connected with the blocking rod in a sliding mode, so that the front end face and the side face on the right side of the hopper can move along the axis of the blocking rod according to the length of the pipe, the length of the material passing port can be adjusted, and the material passing port can adapt to pipes with different lengths.

The transmission mechanism is a belt wheel transmission mechanism 205, the transmission ratio of the belt wheel transmission mechanism is 1:1, the design of a stepping motor control mode integrated in a single chip microcomputer is simpler, and the speed of automatic feeding and discharging is controlled. The two ends of the turntable shaft 201 are supported by the roller bearings and the angular contact ball bearings, so that the transmission part can bear circumferential and axial pressure from machining, the stable operation of the whole system is ensured, the stability of the device is improved, and the production efficiency is improved.

The flaring mechanism 5:

referring to fig. 6, a guide rail is fixedly connected to the top surface of the flaring mechanism 5, and a flaring head bracket 502 is slidably connected to the guide rail; one side of the flaring head bracket 502, which is opposite to the rotary workbench 2, is fixedly connected with a flaring head 501, and the other side of the bracket 502 is hinged with a rocker 504 through a connecting rod 503; the rocker 504 is hinged with a hydraulic cylinder rod 505 which performs horizontal reciprocating motion; the hydraulic cylinder is disposed in a base cavity located below the reamer head bracket 502.

The link mechanism converts the linear reciprocating motion of the hydraulic cylinder rod into the plane swinging motion of the rocker 504, and in the process of swinging the rocker 504 left and right, the flaring head bracket 502 is dragged by the connecting rod 503 to slide left and right along the guide rail, so that the flaring head 501 moves to the right for flaring and moves to the left for recycling.

Axial alignment mechanism:

referring to fig. 6 and 7, the axial alignment mechanism includes a roller 601 disposed on a top surface 603 of a base of the axial alignment mechanism 6 and a roller motor 602 for driving a roller shaft to rotate, the axis of the roller shaft is perpendicular to the axis of the turntable shaft 201, and the roller 601 faces the processing station. When the workpiece is at the feeding station, the base top surface 603 of the alignment mechanism 6 is at the lowest position, and when the workpiece is transferred to the processing station along with the turntable shaft, the base top surface 603 of the alignment mechanism 6 is driven by the cylinder 604 to ascend and just contact with the workpiece, and the roller 601 drives the workpiece to move left. The axial alignment mechanism further comprises a limiting column 605 arranged on the top surface of the base of the flaring mechanism 5, the limiting column 605 is located between the flaring head 501 and the rotary workbench 2, the top end of a limiting blocking piece 606 in the limiting column is equal to the axial lead of the flaring head 501 in height, the limiting column 605 is hollow and provided with a pressure spring, the lower end of the pressure spring is fixed in the limiting column, the upper end of the pressure spring is connected with the limiting blocking piece 606, the lower end of the limiting blocking piece 606 is arranged in the limiting column, and the top end of the limiting blocking piece 606 extends upwards to be equal to the axial lead of the flaring head in height.

After the pipe reaches the processing station, the roller 601 rises to contact with the pipe under the drive of the cylinder 604, the roller 601 rotates anticlockwise under the drive of the roller motor 602, and then the axial pipe is driven to move leftwards until contacting with the limiting blocking sheet 606, so that axial alignment is completed, the accurate positioning of the pipe is realized, and the precision of pipe flaring is ensured. In addition, because the limiting blocking piece 606 is connected with the limiting column through a spring, the limiting blocking piece 606 can vertically move downwards when the flaring head 501 punches rightwards, and movement interference is avoided.

The working principle of the full-automatic pipe flaring machine is as follows:

the fully automatic pipe expanding machine is controlled by a control system (not shown in the figure) matched with the fully automatic pipe expanding machine. Under the premise of knowing the complete structure of the full-automatic pipe flaring machine, a person skilled in the art (industrial control) can design a control system (any one of an industrial control computer, a single chip microcomputer or a PLC can be adopted as a controller) matched with the structure of the full-automatic pipe flaring machine by means of the existing knowledge, and details are not repeated herein.

Before the work: setting the pulse frequency of a turntable motor, determining the rotating speed and the angle of the rotary worktable 2, setting the processing frequency of the lifting clamping device and the flaring mechanism 5, adjusting the machine according to different production beats, and checking whether the feeding, processing and blanking stations corresponding to the rotary worktable 2 are in correct positions.

When in work: the pipe firstly enters a preprocessing position, namely a feeding station, through the shifting sheet 101, the rotary table 2 rotates to drive the rotary table to rotate, the pipe at the preprocessing position is brought into a V-shaped clamping groove processing position, the top surface 603 of the base of the aligning mechanism 6 is driven by the cylinder 604 to ascend and just contact with a workpiece, and the roller 601 drives the workpiece to move left. The roller motor 602 drives the roller 601 to rotate anticlockwise, the pipe moves to the left, the left side of the pipe contacts the limiting baffle 606 and stops at a correct processing position, the hydraulic lifting rod below the lifting clamping mechanism 4 descends, the cover plate 402 presses down to clamp the pipe, the hydraulic cylinder rod in the flaring mechanism 5 moves to the left, flaring of the flaring head 501 moves to the right through the connecting rod, after flaring is completed, the hydraulic cylinder rod contracts, the flaring head 501 moves to the left and is recovered, the lifting rod ascends, the cover plate 402 lifts up and releases, and the base top surface 603 of the aligning mechanism 6 descends to the lowest position under the driving of the cylinder 604. The 2 circumferential direction once more of swivel work head sends into the unloading pipeline through connecing silo 3 with the tubular product of processing, and meanwhile takes the tubular product of next preprocessing to the processing position, through 1:1 the driving belt wheel drives the turntable to complete three steps of feeding, processing and discharging, and a processing cycle is completed.

Finally, automatic feeding and discharging can be completed only by successfully connecting the full-automatic pipe flaring machine with the logistics system, processing can also be completed in a manual feeding mode, and the process is repeated to realize full-automatic processing of pipe flaring. The full-automatic pipe expanding machine greatly improves the feeding and discharging efficiency and the working efficiency of the pipe.

A pipe flaring method, adopt the full-automatic pipe flaring machine in this embodiment, the width of the material passing hole is smaller than the two times of the pipe diameter, make the material passing hole can only pass a pipe at every turn, thus make the pipe blanking to the plectrum present the state of the single-layer side by side; the method comprises the following steps:

step 1: the pipe falls to the shifting sheet from the hopper under the action of gravity, and the shifting sheet is pressed downwards; meanwhile, the turntable rotates outwards, namely towards the direction of the lifting clamping mechanism; when the turntable shaft rotates to the separation blade 1011 at the front end of the turntable V-shaped groove, the separation blade tends to be horizontal along with the downward turning of the shifting piece 101, and the workpiece at the front end naturally falls onto the turntable V-shaped groove under the action of gravity, so that workpiece feeding is completed.

The above embodiments are merely illustrative of the present invention and not restrictive, and it should be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention and the appended claims are intended to cover all such modifications and equivalents.

Claims

1. A fully automatic pipe flaring machine, characterized in that: it comprises an automatic loading and unloading device, an axial alignment mechanism, a lifting and clamping mechanism and a flaring mechanism;

The automatic loading and unloading device includes a hopper, the inner bottom of the hopper is provided with a slope surface, the side wall of the hopper is provided with a feeding port communicating with the lower end of the sloping surface, and a paddle capable of rotating up and down is arranged below the feeding port; the front end of the paddle is upturned A baffle is formed, the rear end of the paddle is rotatably connected to the horizontal shaft, and the horizontal shaft is connected with the paddle bracket fixed on the outer side of the bottom of the hopper; an elastic reset mechanism is arranged between the bottom surface of the paddle and the outer side of the bottom of the hopper, and the elastic reset mechanism makes the dial The sheet can be automatically flipped up after being pressed down and flipped down;

There is a rotary table below the dial, a rotary table motor and a rotary table shaft parallel to the material feeding port are arranged on the rotary table, and the rotary table motor outputs power to the rotary table shaft through a transmission mechanism; the two ends of the rotary table shaft are fixedly connected with a rotary table, and the outer peripheral edge of the rotary table is fixed with a rotary table. There are evenly spaced V-shaped grooves on the top; in the process that the turntable shaft drives the turntable to rotate outward, the pipes that fall from the picks to the V-shaped grooves of the turntable by their own weight can reach the feeding station, the processing station and the lower one in turn. Material station; the baffle at the front end of the paddle prevents the workpiece from falling directly onto the turntable on the rotary table. When the turntable shaft rotates to the V-groove of the turntable facing the baffle at the front end of the paddle, the baffle will move down with the paddle. Turn over and tend to be horizontal, the frontmost workpiece will naturally fall to the V-shaped groove of the turntable under the action of gravity to complete the workpiece feeding; at the same time, due to the reduction of the overall weight of the workpiece, under the action of the elastic reset mechanism, the paddle automatically goes up Turn over, so as to prevent the rest of the workpieces from falling one after another, so that the entire feeding process can be carried out in an orderly manner, only one workpiece is loaded at a time, and by coordinating the work rhythm of each mechanism of the automatic pipe flaring machine, the loading and unloading can be realized. simultaneously;

The elastic reset mechanism includes a torsion spring sleeved on the horizontal rotating shaft, one end of the torsion spring is pressed against the bottom surface of the paddle, and the other end of the torsion spring is pressed against the outer surface of the bottom of the hopper;

The lifting and clamping mechanism includes a lifting column and a cover plate; the lower end of the lifting column is fixed on the frame bottom plate of the rotating worktable, the upper end of the lifting column is fixedly connected to the cover plate, and the inner side of the cover plate extends to just above the feeding station of the turntable; The two ends of the worktable are respectively provided with a flaring mechanism and an axial alignment mechanism;

The axial alignment mechanism includes a base bottom plate, a base top plate is connected to the base bottom plate through a cylinder, and a roller and a roller motor for driving the roller shaft to rotate are provided on the base top plate of the axial alignment mechanism. The axis of the shaft is perpendicular to the axis of the turntable shaft, and the drum is facing the processing station; the axial alignment mechanism also includes a limit column arranged on the top surface of the base of the flaring mechanism, and the limit column is located between the flaring head and the rotary table. In between, the interior of the limiting column is hollow and is provided with a compression spring, the lower end of the compression spring is fixed in the limiting column, the upper end of the compression spring is connected with a limiting block, the lower end of the limiting block is placed in the limiting column, and the top of the limiting block is Extend up to the same height as the axis of the flaring head.

2. The automatic pipe flaring machine according to claim 1, characterized in that: the outer side of the rotary table is provided with a feeding chute located below the unloading station; one end of the feeding chute is supported by a rigid column and receives the material The trough can rotate up and down relative to the rigid column, and the other end of the feeding trough is supported by the elastic column.

3. The fully automatic pipe flaring machine according to claim 1, characterized in that: the hopper is provided with a sorting mechanism for screening and adjusting the position of the pipe; the sorting mechanism comprises: The upper, middle and lower blocking bars in the middle of the hopper and the bottom of the hopper, the upper blocking rod and the middle blocking rod include several blocking rods arranged side by side at intervals, and the lower blocking rods include several blocking rods arranged at intervals along the slope surface. The stop levers are all parallel to the turntable axis.

4. automatic pipe flaring machine according to claim 1, is characterized in that: described V-shaped groove inner surface is bonded with elastic pad; Described transmission mechanism is pulley transmission mechanism, and its transmission ratio is 1: 1.

5. The automatic pipe flaring machine according to claim 1, characterized in that: one end of the hopper is supported by the rack top plate of the rotary table, and the other end of the hopper is supported on the ground by a column; the lifting and clamping mechanism is detachably connected by bolts On the frame bottom plate of the rotary workbench; both ends of the frame bottom plate of the rotary workbench are fixedly connected with clamping plates, and the bottom of the base of the flaring mechanism and the axial alignment mechanism are provided with the clamping plate for clamping the clamping plate. The card interface of the plate, the two ends of the rotary table are respectively clamped with the flaring mechanism and the axial alignment mechanism, and the clamping plate is fixed on the card interface by bolts.

6. The automatic pipe flaring machine according to claim 1, characterized in that: the top surface of the base of the flaring mechanism is fixedly connected with a guide rail, and a flaring head bracket is slidably connected on the guide rail; the flaring head bracket is relative to the rotary table. A flaring head is fixedly connected on one side of the flaring head, and a connecting rod mechanism is hinged on the other side of the flaring head bracket through a connecting rod; the connecting rod mechanism includes a hydraulic cylinder rod that performs horizontal reciprocating motion, and the hydraulic cylinder rod is hinged with the connecting rod through a rocker; The hydraulic cylinder is located in the base cavity below the flaring head bracket.

7. A pipe flaring method, characterized in that, using the fully automatic pipe flaring machine according to any one of claims 1 to 6, the width of the feeding port is less than twice the diameter of the pipe material, so that the feeding port is each time Only one pipe can pass through, so that the pipes falling on the pick are in a single-layer side-by-side state;

Include the following steps:

Step 1: Under the action of gravity, the pipe falls from the hopper to the pick, and the pick is pressed down; at the same time, the turntable rotates to the outside, that is, it rotates in the direction of the lifting and clamping mechanism; When the shutter is placed, the shutter tends to be level with the downturn of the paddle, and the workpiece at the front end will naturally fall to the V-shaped groove of the turntable under the action of gravity to complete the loading of the workpiece;

At the same time, due to the reduction of the overall weight of the workpiece, under the action of the elastic reset mechanism, the paddle is automatically turned up, thereby preventing the remaining workpieces from falling one after another;

Step 2: The turntable continues to rotate outward to drive the pipe in the V-shaped groove to rise to the highest position and reach the processing station;

Step 3: When the workpiece is transferred to the processing station with the turntable shaft, the base top plate of the axial alignment mechanism rises under the driving of the cylinder and makes the roller just contact the pipe, and the roller drives the pipe to move axially, so that the pipe reaches the expansion point. within the axial travel range of the port mechanism;

Step 4: The turntable stops rotating; the lifting and clamping mechanism lowers the cover plate until the pipe is pressed against the V-groove;

Step 5: The flaring head of the flaring mechanism punches the end of the pipe axially to expand the diameter of the pipe end, thereby completing the flaring;

Step 6: The lifting and clamping mechanism lifts the cover plate to release the pressing state of the pipe; then, the turntable continues to rotate outward, and the material is loaded at the same time as the material is unloaded;

Step 7: Repeat steps 1 to 6 until the machining task is completed.