CN114985527A - Automatic pipe end rounding and straightening mechanism - Google Patents

Abstract

The invention provides an automatic pipe end rounding straightening mechanism which comprises a material rack base, a material storage area, a material discharging area, a material pressing mechanism, a first material ejecting mechanism, a second material ejecting mechanism, a rounding mechanism, a feeding mechanism, a straightening mechanism and a hollow metal pipe.

Description

Automatic pipe end rounding and straightening mechanism

Technical Field

The invention belongs to the field of agricultural machinery, and particularly relates to an automatic pipe end rounding and straightening mechanism.

Background

In the building construction, need install some tubular metal resonator class hollow pipe, when carrying out operations such as welding, cutting, stew pipe, certain deformation often can appear in the pipeline port, lead to the circularity irregular, make the phenomenon that takes place the wrong mouth or can't assemble when carrying out the pipeline equipment, delay the construction progress, influence construction quality, in the transport, the tubular metal resonator outer wall receives extrusion and impact, also can have the bending production and lateral wall sunken, pipe end circularity irregular scheduling problem, the atress bending deformation also can appear when using and lead to the irregular condition of pipe end circularity, influence tubular metal resonator structural strength, the normal use of pipeline has directly been influenced, so need carry out the perfect circle to the pipe end, thereby make the product reach standard requirement.

The existing shaping machinery product with the perfect circle is complex in structure, too high in cost and not easy to popularize, when the pipe end of the existing hollow metal pipe is subjected to the perfect circle, the pipe body is fixed by a fixing device in a manual mode or a mechanical mode, and then the pipe end is subjected to the perfect circle and the alignment, the installation and the disassembly of the fixing device are time-consuming and labor-consuming, the whole correction efficiency is reduced, the existing shaping machinery product is not suitable for the perfect circle and the alignment process of pipelines in batches, and particularly when the pipe end of a long pipeline is subjected to the perfect circle, the existing shaping machinery product is more unsuitable for use, a plurality of fixing devices are required to fix the pipe body, the cost is increased, and the disassembly and the installation are more inconvenient.

Disclosure of Invention

In order to solve the problems, the invention provides an automatic pipe end rounding and straightening mechanism, which is designed automatically, overcomes the defect that the existing mechanism cannot be suitable for rounding and straightening batch metal pipes, elastically presses and fixes the metal pipes, can perform batch rounding process without repeated manual or mechanical disassembly and assembly, saves trouble and time and labor, and improves the overall efficiency.

To achieve the purpose, the invention provides an automatic pipe end rounding straightening mechanism, which comprises a material rack base, a material storage area, a material discharge area, a material pressing mechanism, a first material ejecting mechanism, a second material ejecting mechanism, a rounding mechanism, a feeding mechanism, a straightening mechanism and a hollow metal pipe, wherein the middle of the material rack base is convexly arranged, the material storage area and the material discharge area are respectively positioned at two sides of the bulge of the material rack base, the material discharge area and the horizontal plane form an acute angle of ɸ degrees, the hollow metal pipes are uniformly distributed on the material storage area and the material discharge area, the number of the material pressing mechanisms is 2n, wherein n is more than 1, the hollow metal pipes are uniformly distributed above the material discharge area along the length direction of the hollow metal pipes and press the hollow metal pipes, the first material ejecting mechanism and the second material ejecting mechanism are sequentially arranged on the material discharge area along the direction vertical to the length of the hollow metal pipes, the feeding mechanism is positioned in the material discharge area and below the second material ejecting mechanism, the rounding mechanism is arranged on the material discharge area and is positioned at one end of the hollow metal tube, the straightening mechanism is arranged on one side of the rounding mechanism and is detachably connected with the material rack base, when the device works, a bundle of the hollow metal tubes is hung above the material storage area and is pushed into the material discharge area after being arranged orderly, the material pressing mechanism presses the hollow metal tubes and ensures that all the hollow metal tubes are arranged orderly, the first material ejecting mechanism ejects the first hollow metal tube to a certain height from the material discharge area, because the material discharge area forms an acute angle of ɸ with the horizontal plane, the hollow metal tubes fall onto the second material ejecting mechanism in a proper position, tube ends fall into the rounding mechanism for rounding, and after rounding is finished, the second material ejecting mechanism ejects the hollow metal tubes after rounding, and the hollow metal tubes fall into the material feeding mechanism, the feeding mechanism pushes the hollow metal pipe into the straightening mechanism to be straightened, and after straightening is completed, the hollow metal pipe falls into the material rack. By the design, the metal pipes are automatically rounded and straightened one by one in sequence, the operation of personnel is not needed, the automation is realized, the trouble, labor and time are saved, and the efficiency of batch rounding and straightening is improved.

As a further improvement of the invention, the material storage area comprises a blocking strip and a material placing plate, the blocking strip is arranged at the edge of the material placing plate and is positioned on one side of the material rack base and used for preventing the hollow metal tubes on the material placing plate from falling, the material discharging area comprises a supporting plate and a material ejecting mechanism mounting plate, the material ejecting mechanism mounting plate is a rectangular strip-shaped plate and is detachably arranged on the supporting plate, the first material ejecting mechanism and the second material ejecting mechanism are respectively and sequentially arranged on the material ejecting mechanism mounting plate from top to bottom, and the hollow metal tubes are arranged on the material ejecting mechanism mounting plate. The two material ejecting mechanisms respectively realize the automatic conversion of the hollow metal tube from the material discharging area placing position to the perfect circle state, do not need personnel operation, are carried out automatically, and greatly save the process time.

The material pressing mechanism is further improved by the invention and comprises a support, material pressing rods, two screw rods and a screwing device, one end of the support is arranged on the material rack base and positioned on one side of the material discharging area, the other end of the support extends towards the material discharging area to form an extending part, one end of the support is connected with the material pressing rods, the other end of the support penetrates through holes in the extending part and then is locked by the screwing device, the material pressing rods are arranged in parallel with the extending part, the end parts of the material pressing rods are bent upwards, and an alpha acute angle is formed between the material pressing rods and the material pressing rods. The end part of the material pressing mechanism is bent to perform a guiding function on the position conversion of the hollow metal pipe, so that the hollow metal pipe can smoothly enter the lower part of a material pressing rod of the material discharging area from the material storing area without moving and falling, the material pressing mechanism performs elastic pressing on the hollow metal pipe, the upper position and the lower position of the material pressing rod can be adjusted through a screw rod, the circular straightening mechanism can be suitable for the circular straightening and straightening of the hollow metal pipes with different diameters, and the number of the material pressing mechanisms can be increased according to the length of the hollow metal pipe until the hollow metal pipe can be stably pressed in the material discharging area for circular straightening.

As a further improvement of the invention, the first material ejecting mechanism and the second material ejecting mechanism have the same structure, the first material ejecting mechanism comprises a fixed plate, a nylon stop block, an ejecting cylinder, a push rod, an adjustable hole and a through hole, the upper surface of the nylon stop block is arranged in a gradient manner, the adjustable hole is arranged on the nylon stop block, the through hole is arranged on the fixed plate, the fixed plate is fixed on the mounting plate of the material ejecting mechanism, the nylon stop block is mounted on one side of the upper surface of the fixed plate through the adjustable hole, after one end of the push rod is connected with the ejecting cylinder, one end of the push rod can eject one hollow metal pipe which is arranged on one side of the nylon stop block above the hollow metal pipe out of the mounting plate of the material ejecting mechanism through the through hole for a certain distance, and the hollow metal pipe falls onto the second material ejecting mechanism along the gradient surface of the nylon stop block, the pipe end is rounded. This design utilizes two liftout mechanisms that the structure is the same to realize the position conversion of cavity tubular metal resonator for cavity tubular metal resonator has slided to the position of perfect circle from the initial position of row material district, convenient and fast, and is efficient.

As a further improvement of the invention, the rounding mechanism comprises a support frame, an upper oil cylinder, a rear oil cylinder, an upper clamp, an upper arc, a lower clamp, a lower arc, a rounding core head, a rear oil cylinder connecting shaft, a rounding mechanism base and an upper oil cylinder connecting shaft, wherein the support frame is in the shape of a square

The structure, install the upper end go up the hydro-cylinder, the lower extreme with right circular mechanism base hookup, the right side with the back hydro-cylinder hookup axle hookup of back hydro-cylinder one end hookup, go up hydro-cylinder hookup axle upper end and pass the support frame with go up the hydro-cylinder hookup, the lower extreme with go up anchor clamps hookup, down anchor clamps install in on the right circular mechanism base, and be located support frame one side, with it is relative to go up anchor clamps, make to be formed in go up on the anchor clamps go up the arc with form on the anchor clamps down the arc is mutually supported and is formed the centre gripping space, is used for the centre gripping cavity tubular metal resonator, right circular core head one end is aimed at in the centre gripping space cavity tubular metal resonator center, one end passes behind the support frame one side with back hydro-cylinder hookup axle hookup. Through the cooperation of hydro-cylinder, anchor clamps and positive circle core print, the defect that artifical positive circle leads to has been avoided to automatic technology, and the internal diameter size of the cavity tubular metal resonator of positive circle core print can be as required positive circle is changed, is fit for the positive circle technology of the cavity tubular metal resonator of more different diameters, and application range is wider, and it is also more convenient to maintain and change.

The application discloses an automatic pipe end is straight round aligning gear has following advantage:

1) the feeding, rounding and straightening are automatically carried out through the mutually matched design of the material ejecting mechanism, the rounding mechanism, the feeding mechanism and the straightening mechanism, so that the defects caused by manual operation are overcome;

2) the elastic design and the adjustable design of the pressing mechanism enable the hollow metal pipe to be directly fixed and rounded without manually fixing the hollow metal pipe before the rounding process is carried out, so that time and labor are saved;

3) the distance between the nylon stop block and the push rod of the material ejecting mechanism can be adjusted, and the distance between the upper clamp and the lower clamp of the regular round structure can be adjusted and the regular round core head can be replaced, so that the invention can be suitable for the regular round process of hollow metal pipes with different diameters, has wider application range and is more convenient to maintain.

In a word, the automatic pipe end rounding straightening mechanism of this application reasonable in design, automated design, the simple structure is easily made, has solved the unable defect of being suitable for the rounding alignment of batch tubular metal resonator of current mechanism, carries out elastic pressing and fixes the tubular metal resonator, need not to relapse manual work or machinery and dismantles and install, can carry out the process of rounding in batches, saves trouble labour saving and time saving, has improved holistic operating efficiency, and is very practical, and application prospect is extensive.

Drawings

FIG. 1 is a schematic view of the overall structure of an automatic pipe end rounding and straightening mechanism according to the present invention;

FIG. 2 is an enlarged rear view of FIG. 1;

FIG. 3 is an enlarged schematic view of detail A of FIG. 1;

fig. 4 is a schematic structural view of the pressing mechanism in fig. 1;

FIG. 5 is a schematic structural diagram of the ejector mechanism in FIG. 1;

FIG. 5a is a side view of the ejector mechanism;

FIG. 5b is a front view of the ejector mechanism;

FIG. 5c is a top view of the ejector mechanism;

FIG. 6 is a schematic structural diagram of the rounding mechanism of FIG. 1;

FIG. 6a is a side view of a rounding mechanism;

FIG. 6b is a front view of the rounding mechanism;

FIG. 6c is a top view of the rounding mechanism;

name of parts

1. The automatic material-pushing device comprises a material rack base, 2, a material storage area, 2-1, a barrier strip, 2-2, a material-placing plate, 3, a material-discharging area, 3-1, a supporting plate, 3-2, a material-pushing mechanism mounting plate, 4, a material-pressing mechanism, 4-1, a support, 4-2, a material-pressing rod, 4-3, a screw rod, 4-4, a screwing device, 5, a first material-pushing mechanism, 5-1, a fixing plate, 5-2, a nylon stop block, 5-3, a material-pushing cylinder, 5-4, a push rod, 5-5, an adjustable hole, 5-6, a through hole, 6, a second material-pushing mechanism, 7, a rounding mechanism, 7-1, a support frame, 7-2, an upper oil cylinder, 7-3, a rear oil cylinder, 7-4, an upper clamp, 7-4-1, an upper arc, 7-5, a lower clamp, 7-5-1, a lower clamp and a lower clamp, a, 7-6 parts of lower arc, 7-6 parts of right circular core print, 7-7 parts of rear oil cylinder connecting shaft, 7-8 parts of right circular mechanism base, 7-9 parts of upper oil cylinder connecting shaft, 8 parts of feeding mechanism, 9 parts of straightening mechanism and 10 parts of hollow metal pipe.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

as shown in fig. 1-3, the automatic pipe end rounding and straightening mechanism provided by the present invention comprises a rack base 1, a material storage area 2, a material discharge area 3, a material pressing mechanism 4, a first material ejecting mechanism 5, a second material ejecting mechanism 6, a rounding mechanism 7, a material feeding mechanism 8, a straightening mechanism 9 and a hollow metal pipe 10, wherein the middle of the rack base 1 is convexly arranged, the material storage area 2 and the material discharge area 3 are respectively located at two sides of the protrusion of the rack base 1, the material discharge area 3 and the horizontal plane form an acute angle of ɸ, the hollow metal pipes 10 are uniformly arranged on the material storage area 2 and the material discharge area 3, the number of the material pressing mechanisms 4 is 2n, wherein n >1 is uniformly distributed above the material discharge area 3 along the length direction of the hollow metal pipe 10 and presses the hollow metal pipe 10, the first material ejecting mechanism 5 and the second material ejecting mechanism 6 are sequentially installed on the material discharge area 3 along the direction perpendicular to the length of the hollow metal pipe 10, the feeding mechanism 8 is located in the material discharging area 3 and below the second material ejecting mechanism 6, the rounding mechanism 7 is installed on the material discharging area 3 and located at one end of the hollow metal tube 10, the straightening mechanism 9 is installed on one side of the rounding mechanism 7 and detachably connected with the material rack base 1, when the material pushing mechanism works, a bundle of the hollow metal tubes 10 is hung above the material storing area 2 and pushed into the material discharging area 3 after being arranged in order, the material pressing mechanism 4 presses the hollow metal tubes 10 and ensures that all the hollow metal tubes 10 are arranged in order, the first material ejecting mechanism 5 ejects a first hollow metal tube 10 to a certain height from the material discharging area 3, and as the material discharging area 3 forms an acute angle of ɸ with the horizontal plane, the hollow metal tubes 10 fall onto the second material ejecting mechanism 6 in order, and the tube ends fall into the rounding mechanism 7 for rounding, after the rounding is finished, the second material ejecting mechanism 6 ejects the hollow metal pipe 10 after rounding, the hollow metal pipe 10 falls into the feeding mechanism 8, the feeding mechanism 8 pushes the hollow metal pipe 10 into the straightening mechanism 9 for straightening, and after the straightening is finished, the hollow metal pipe 10 falls into the material rack. By the design, the metal pipes are automatically rounded and straightened one by one in sequence, the operation of personnel is not needed, the automation is realized, the trouble, the labor and the time are saved, and the efficiency of rounding and straightening in batches is provided.

The material storage area 2 comprises a blocking strip 2-1 and a material placing plate 2-2, the blocking strip 2-1 is installed on the edge of the material placing plate 2-2 and located on one side of the material rack base 1 and used for preventing the hollow metal tube 10 on the material placing plate 2-2 from falling, the material discharging area 3 comprises a supporting plate 3-1 and an ejection mechanism mounting plate 3-2, the ejection mechanism mounting plate 3-2 is a rectangular strip-shaped plate and is detachably installed on the supporting plate 3-1, a first ejection mechanism 5 and a second ejection mechanism 6 are sequentially installed on the ejection mechanism mounting plate 3-2 from top to bottom respectively, and the hollow metal tubes 10 are arranged on the ejection mechanism mounting plate 3-2. The two material ejecting mechanisms respectively realize the automatic conversion of the hollow metal tube from the material discharging area placing position to the perfect circle state, do not need personnel operation, are carried out automatically, and greatly save the process time.

As shown in fig. 4, the pressing mechanism 4 includes a support 4-1, a pressing rod 4-2, a screw rod 4-3, and a screwing device 4-4, one end of the support 4-1 is mounted on the rack base 1 and located on one side of the material discharge area 3, the other end of the support extends toward the material discharge area 3 to form an extension portion, two screw rods 4-3 are provided, one end of each screw rod is connected with the pressing rod 4-2, one end of each screw rod passes through a through hole in the extension portion and then is locked by the screwing device 4-4, the pressing rod 4-2 is parallel to the extension portion, and the end portion of each pressing rod 4-2 is bent upward and forms an acute angle α with the pressing rod 4-2. The end part of the material pressing mechanism is bent to perform a guiding function on position conversion of the hollow metal pipe, so that the hollow metal pipe can smoothly enter the lower part of a material pressing rod 4-2 of the material discharging area 3 from the material storage area 2 without moving and falling, the material pressing mechanism 4 performs elastic pressing on the hollow metal pipe, the upper position and the lower position of the material pressing rod 4-2 can be adjusted through a screw rod 4-3, the material pressing mechanism can be suitable for rounding and straightening the hollow metal pipes with different diameters, and the number of the material pressing mechanisms 4 can be increased according to the length of the hollow metal pipe until the hollow metal pipe can be stably pressed in the material discharging area 3 for rounding.

As shown in fig. 5, the first material ejecting mechanism 5 and the second material ejecting mechanism 6 have the same structure, the first material ejecting mechanism 5 includes a fixed plate 5-1, a nylon stopper 5-2, an ejecting cylinder 5-3, a push rod 5-4, an adjustable hole 5-5 and a through hole 5-6, the upper surface of the nylon stopper 5-2 is arranged in a gradient manner, the adjustable hole 5-5 is arranged on the nylon stopper 5-2, the through hole 5-6 is arranged on the fixed plate 5-1, the fixed plate 5-1 is fixed on the ejecting mechanism mounting plate 3-2, the nylon stopper 5-2 is mounted on one side of the upper surface of the fixed plate 5-1 through the adjustable hole 5-5, one end of the push rod 5-4 is connected with the ejecting cylinder 5-3, after one end of the hollow metal pipe 10 which is arranged on one side of the nylon stop block 5-2 and is positioned above the nylon stop block can penetrate through the through hole 5-6 to be ejected out a certain distance away from the material ejecting mechanism mounting plate 3-2, the hollow metal pipe 10 falls onto the second material ejecting mechanism 6 along the gradient surface of the nylon stop block 5-2, and the pipe end is rounded. Fig. 5a, 5b and 5c are a side view, a front view and a top view of the ejector mechanism, respectively. This design utilizes two liftout mechanisms that the structure is the same to realize the position conversion of cavity tubular metal resonator for cavity tubular metal resonator has slided to the position of perfect circle from the initial position of row material district 3, convenient and fast, and is efficient.

As shown in FIG. 6, the rounding mechanism 7 comprises a support frame 7-1, an upper oil cylinder 7-2, a rear oil cylinder 7-3, an upper clamp 7-4, an upper arc 7-4-1, a lower clamp 7-5, a lower arc 7-5-1, a rounding core head 7-6, a rear oil cylinder connecting shaft 7-7, a rounding mechanism base 7-8 and an upper oil cylinder connecting shaft 7-9, wherein the support frame 7-1 is in a shape of a square

The structure is that the upper end is provided with the upper oil cylinder 7-2, the lower end is connected with the base 7-8 of the rounding mechanism, the right side is connected with a rear oil cylinder connecting shaft 7-7 connected with one end of the rear oil cylinder 7-3, and the upper end of the upper oil cylinder connecting shaft 7-9 penetrates through the upper oil cylinder connecting shaftThe supporting frame 7-1 is connected with the upper oil cylinder 7-2, the lower end of the supporting frame is connected with the upper clamp 7-4, the lower clamp 7-5 is installed on the base 7-8 of the rounding mechanism and is positioned on one side of the supporting frame 7-1 and is opposite to the upper clamp 7-4, so that the upper arc 7-4-1 formed on the upper clamp 7-4 and the lower arc 7-5-1 formed on the lower clamp 7-5 are matched with each other to form a clamping space for clamping the hollow metal pipe 10, one end of the rounding core head 7-6 is aligned to the center of the hollow metal pipe 10 in the clamping space, and the other end of the rounding core head passes through one side of the supporting frame 7-1 and then is connected with the rear oil cylinder connecting shaft 7-7. Fig. 6a, 6b, and 6c are a side view, a front view, and a top view of the rounding mechanism, respectively. The oil cylinder, the clamp and the round core print 7-6 are matched, the defect caused by manual rounding is avoided, the round core print 7-6 can be replaced according to the inner diameter of the round hollow metal pipe, the round hollow metal pipe is suitable for the round process of more hollow metal pipes with different diameters, the application range is wider, and the maintenance and the replacement are more convenient.

The application provides an automatic positive round alignment mechanism of pipe end, there is following advantage:

1) the feeding, rounding and straightening are automatically carried out through the mutually matched design of the material ejecting mechanism, the rounding mechanism, the feeding mechanism and the straightening mechanism, so that the defects caused by manual operation are overcome;

2) the elastic design and the adjustable design of the pressing mechanism enable the hollow metal pipe to be directly fixed and rounded without manually fixing the hollow metal pipe before the rounding process is carried out, so that time and labor are saved;

3) the distance between the nylon stop block 5-2 and the push rod 5-4 of the material ejecting mechanism can be adjusted, and the distance between the upper clamp and the lower clamp of the regular round structure and the replaceable design of the regular round core head are combined, so that the invention can be suitable for the regular round process of hollow metal pipes with different diameters, has wider application range and is more convenient to maintain.

In a word, an automatic pipe end rounding straightening mechanism of this application reasonable in design, automated design, the simple easy manufacturing of structure has solved the unable defect of being suitable for the rounding alignment of batch tubular metal resonator of current mechanism, carries out the elasticity suppression and fixes to the tubular metal resonator, need not to relapse manual work or mechanical dismantlement and installation, can carry out the process of rounding in batches, saves trouble labour saving and time saving, has improved holistic operating efficiency, and is very practical, and application prospect is extensive.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.

Claims (5)

1. An automatic pipe end rounding straightening mechanism comprises a material rack base (1), a material storage area (2), a material discharging area (3), a material pressing mechanism (4), a first material ejecting mechanism (5), a second material ejecting mechanism (6), a rounding mechanism (7), a material feeding mechanism (8), a straightening mechanism (9) and a hollow metal pipe (10), wherein the middle of the material rack base (1) is convexly arranged, the material storage area (2) and the material discharging area (3) are respectively positioned on two raised sides of the material rack base (1), the material discharging area (3) and the horizontal plane form an ɸ acute angle, the hollow metal pipe (10) is uniformly distributed on the material storage area (2) and the material discharging area (3), the number of the material pressing mechanisms (4) is 2n, wherein n is greater than 1, and the hollow metal pipe (10) is uniformly distributed above the material discharging area (3) along the length direction of the hollow metal pipe (10) and presses the hollow metal pipe (10), the first material ejecting mechanism (5) and the second material ejecting mechanism (6) are sequentially arranged on the material discharging area (3) along the vertical direction of the length of the hollow metal tube (10), the feeding mechanism (8) is positioned in the material discharging area (3) and below the second material ejecting mechanism (6), the rounding mechanism (7) is arranged on the material discharging area (3) and positioned at one end of the hollow metal tube (10), the straightening mechanism (9) is arranged on one side of the rounding mechanism (7) and detachably connected with the material rack base (1), when the material pushing mechanism works, a bundle of the hollow metal tube (10) is hung above the material storing area (2) and pushed into the material discharging area (3) after being arranged in order, the material pressing mechanism (4) presses the hollow metal tube (10) and ensures that all the hollow metal tubes (10) are arranged in order, first liftout mechanism (5) will be first cavity tubular metal resonator (10) top is from row material district (3) take the altitude, because row material district (3) and level are ɸ acute angles, cavity tubular metal resonator (10) are followed the situation and are fallen on second liftout mechanism (6), and the pipe end falls into carry out the semicircle in the semicircle mechanism (7), after the semicircle, second liftout mechanism (6) will be after the semicircle cavity tubular metal resonator (10) are ejecting, cavity tubular metal resonator (10) fall into in feeding mechanism (8), feeding mechanism (8) will cavity tubular metal resonator (10) push alignment mechanism (9) alignment, after the alignment, cavity tubular metal resonator (10) fall into the work or material rest.

2. The automatic pipe end rounding and straightening mechanism according to claim 1, characterized in that the storage area (2) comprises a barrier strip (2-1) and an object placing plate (2-2), the barrier strip (2-1) is installed at the edge of the object placing plate (2-2) and is located at one side of the rack base (1) for preventing the hollow metal pipe (10) on the object placing plate (2-2) from falling off, the discharge area (3) comprises a supporting plate (3-1) and an ejecting mechanism installing plate (3-2), the ejecting mechanism installing plate (3-2) is a rectangular strip plate and is detachably installed on the supporting plate (3-1), the first ejecting mechanism (5) and the second ejecting mechanism (6) are respectively installed on the ejecting mechanism installing plate (3-2) from top to bottom in sequence, the hollow metal tubes (10) are arranged on the material ejecting mechanism mounting plate (3-2).

3. An automatic pipe end rounding alignment mechanism according to claim 2, the material pressing mechanism (4) comprises a bracket (4-1), a material pressing rod (4-2), a screw rod (4-3) and a screwing device (4-4), one end of the bracket (4-1) is arranged on the rack base (1) and positioned at one side of the material discharging area (3), the other end of the bracket extends towards the material discharging area (3) to form an extension part, two screw rods (4-3) are provided, one end of each screw rod is connected with the material pressing rod (4-2), the other end of each screw rod penetrates through a through hole in the extending part and then is locked by the screwing device (4-4), the material pressing rod (4-2) is arranged in parallel with the extending part, the end part is bent upwards, and an alpha acute angle is formed between the material pressing rod (4-2) and the end part.

4. The automatic pipe end rounding straightening mechanism according to claim 3, wherein the first ejecting mechanism (5) and the second ejecting mechanism (6) have the same structure, the first ejecting mechanism (5) comprises a fixing plate (5-1), a nylon stopper (5-2), an ejecting cylinder (5-3), a push rod (5-4), an adjustable hole (5-5) and a through hole (5-6), the upper surface of the nylon stopper (5-2) is arranged in a gradient manner, the adjustable hole (5-5) is arranged on the nylon stopper (5-2), the through hole (5-6) is arranged on the fixing plate (5-1), the fixing plate (5-1) is fixed on the ejecting mechanism mounting plate (3-2), and the nylon stopper (5-2) is arranged on the fixing plate (5) through the adjustable hole (5-5) 1) On one side of the upper surface, one end of the push rod (5-4) is connected with the material ejecting cylinder (5-3), one end of the push rod can penetrate through the through hole (5-6) to eject the hollow metal pipe (10) above the hollow metal pipe out of the material ejecting mechanism mounting plate (3-2) for a certain distance, the hollow metal pipe (10) drops to the second material ejecting mechanism (6) along the gradient surface of the nylon stop block (5-2), and the pipe end is rounded.

5. The automatic pipe end rounding and straightening mechanism according to claim 4, characterized in that the rounding mechanism (7) comprises a support frame (7-1), an upper oil cylinder (7-2), a rear oil cylinder (7-3), an upper clamp (7-4), an upper arc (7-4-1), a lower clamp (7-5), a lower arc (7-5-1), a rounding core head (7-6), a rear oil cylinder connecting shaft (7-7), a rounding mechanism base (7-8) and an upper cylinder connecting shaft (7-9), wherein the support frame (7-1) is in the shape of a support frame (7-1)

The structure is characterized in that the upper oil cylinder (7-2) is arranged at the upper end, the lower end is connected with the rounding mechanism base (7-8), the right side is connected with a rear oil cylinder connecting shaft (7-7) connected with one end of the rear oil cylinder (7-3), the upper end of the upper oil cylinder connecting shaft (7-9) penetrates through the supporting frame (7-1) to be connected with the upper oil cylinder (7-2), the lower end is connected with the upper clamp (7-4), the lower clamp (7-5) is arranged on the rounding mechanism base (7-8), is positioned on one side of the supporting frame (7-1) and is opposite to the upper clamp (7-4), so that the upper arc (7-4-1) formed on the upper clamp (7-4) and the lower arc (7-5-1) formed on the lower clamp (7-5) are mutually matched to form a clamping space, for clamping the hollow metal tube (10), one end of the right circular core print (7-6) is alignedOne end of the hollow metal pipe (10) in the clamping space penetrates through one side of the support frame (7-1) and then is connected with the rear oil cylinder connecting shaft (7-7).

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