CN213530313U - Automatic change annular pipe return bend equipment - Google Patents

Abstract

The utility model discloses an automatic annular pipe bending device, which comprises a base, wherein the top surface of the base is provided with a material moving device, a feeding device, a first bending die and a mounting frame, and two second bending dies are arranged in the mounting frame; a plurality of pipe bending ring grooves are formed in the second pipe bending die and the first pipe bending die; a fixing device and a pipe bending disc are respectively arranged on two sides of the first pipe bending die, and a plurality of guide pieces and guide wheels are arranged on the top surface of the pipe bending disc; an alignment seat is arranged between the feeding device and the moving device, and a first mounting frame is arranged on the top surface of the alignment seat; two first aligning rollers are installed in the first installation frame, and second installation frames are arranged on two sides of the first installation frame; two second aligning rollers are installed in each second installation frame. The utility model discloses not only can conveniently operate, still have the return bend effectual, work efficiency is high, stability is high, long service life, low in production cost, simple structure and application scope wide advantage.

Description

Automatic change annular pipe return bend equipment

Technical Field

The utility model relates to a ring pipe processing equipment, especially automatic ring pipe return bend equipment.

Background

When the leisure round chair is produced, a straight pipe fitting needs to be looped by using a pipe looping machine; in the general circular pipe production process, pipe bending machines of vertical pipe bending are mostly utilized to carry out circular pipe production work on pipe fittings, but the pipe bending machines have certain limitation on the diameter of the finished circular pipe, when the diameter of the circular pipe needing to be bent is larger, the height of the whole device is higher, but the increase of the height can cause inconvenience in operations such as feeding and the like, and the whole operation is inconvenient; and because the pipe fitting is in a vertical pipe bending state, the pipe fitting is easy to separate from the pipe bending die or the pipe fitting deviates from the position of the pipe fitting due to the self gravity in the pipe bending process, and the whole pipe bending effect is influenced. Therefore, the existing pipe bender has the problems of inconvenient operation and poor pipe bending effect when the pipe bending work of the annular pipe fitting is carried out.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic change annular tube return bend equipment. The utility model discloses not only can conveniently operate, still have the effectual advantage of return bend.

The technical scheme of the utility model: the automatic annular pipe bending equipment comprises a base, wherein a material moving device is arranged on the top surface of the base, and a feeding device is arranged on one side of the material moving device; the other side of the material moving device is provided with a first bending die and an installation frame which are symmetrically arranged, and two second bending dies which are symmetrically arranged are arranged in the installation frame; a plurality of bent pipe ring grooves which are vertically and uniformly distributed are arranged on the second bent pipe die and the first bent pipe die; a fixing device is arranged on one side of the first pipe bending die, a pipe bending disc is arranged on the other side of the first pipe bending die, and a plurality of guide pieces which are uniformly distributed in an annular shape are arranged on the top surface of the pipe bending disc; a guide wheel is arranged between every two adjacent guide pieces; an alignment seat is arranged between the feeding device and the moving device, and a first mounting frame is arranged on the top surface of the alignment seat; two first aligning rollers which are vertically and symmetrically distributed are arranged in the first mounting frame, and second mounting frames are arranged on two sides of the first mounting frame; two second aligning rollers which are transversely and symmetrically distributed are installed in each second installation frame.

In the automatic annular pipe bending device, a positioning frame is mounted on the side surface, close to the feeding device, of the alignment seat, and a positioning roller is arranged at the bottom end part of the positioning frame; the top end part of the positioning frame is provided with a positioning cylinder, and a positioning piece is connected on the positioning cylinder; the bottom end portion of setting element is provided with hall sensor, loading attachment and move the material device all with hall sensor electric connection.

In the automatic annular pipe bending device, the material moving device comprises a material moving rack arranged on the top surface of the base, and material moving slide rails are arranged on two sides of the material moving rack; a material moving seat is slidably arranged between the two material moving sliding rails, a material moving motor is arranged on the top surface of the material moving seat, and the material moving motor is meshed and connected with a material moving rack; a fixed frame is arranged on one side, close to the first pipe bending die, of the material moving motor, and a material moving channel is installed on the fixed frame; the end part, close to the first pipe bending die, of the material moving channel is provided with an installation ring, a plurality of elastic gripping pieces which are uniformly distributed are annularly installed on the installation ring, and the inner side surface of each elastic gripping piece is provided with a fixing groove; a telescopic sleeve is sleeved on the material moving channel, and a telescopic cylinder is mounted at one end of the telescopic sleeve; the telescopic cylinder is arranged on the side surface of the fixed frame; all the elastic gripping pieces are arranged in the telescopic sleeve.

In the automatic annular pipe bending device, two third mounting frames which are symmetrically arranged are arranged on one side, close to the feeding device, of the fixing frame, and two third aligning rollers which are vertically and symmetrically arranged are arranged in each third mounting frame; a supporting base is arranged at one end part of the material moving rack close to the feeding device, and a supporting channel is arranged on the top surface of the supporting base; one end of the supporting channel is provided with a fourth mounting frame, and two fourth aligning rollers which are vertically and symmetrically arranged are mounted in the fourth mounting frame.

In the foregoing automatic annular pipe bending apparatus, the elastic gripping member is disposed in an inclined manner, wherein a distance between an end of the elastic gripping member connected to the mounting ring and an inner wall of the telescopic sleeve is greater than a distance between another end of the elastic gripping member and the inner wall of the telescopic sleeve.

In the automatic annular pipe bending device, the feeding device comprises a feeding frame, and a feeding driving shaft is mounted at the bottom end part of the feeding frame; a feeding motor is installed at the end part of the feeding driving shaft, and a feeding driven shaft is arranged above the feeding driving shaft; an inclined feeding conveyor belt is arranged between the feeding driven shaft and the feeding driving shaft, and a plurality of uniformly distributed feeding separating pieces are arranged on the feeding conveyor belt; a blanking table is arranged on the side surface, close to the feeding driven shaft, of the feeding frame, and a feeding slide rail is arranged on the top surface of the blanking table; a feeding seat is slidably mounted on the feeding slide rail, and two symmetrically-arranged feeding rollers are arranged on the top surface of the feeding seat; and a feeding cylinder is arranged on one side of the feeding slide rail and is connected with the feeding seat.

In the automatic annular pipe bending device, two symmetrically arranged buffer frames are arranged between the blanking table and the feeding frame, and an arc-shaped buffer channel is arranged on the side surface of each buffer frame facing the blanking table; the tip that is close to the blanking platform on the buffering passageway is less than the tip that is close to last work or material rest on the buffering passageway, and the tip that is close to the blanking platform on the buffering passageway is equipped with the detection light curtain, detects light curtain and material loading motor electric connection.

In the automatic annular pipe bending device, the fixing device comprises a fixed die, and a fixed movable die is arranged on one side of the fixed die; the fixed movable die is connected with a fixed air cylinder, and the side surfaces of the fixed movable die and the fixed die are provided with clamping grooves; all the clamping grooves are arranged between the fixed movable die and the fixed die.

In the above automatic annular pipe bending apparatus, an inclined guard is provided at one end of the bending disk, and the guard is provided at an end of a pipe bending movement path; the end of the protection piece connected with the elbow disc is lower than the other end of the protection piece.

Compared with the prior art, the utility model improves the existing automatic annular pipe bending equipment, the feeding device, the material moving device, the first pipe bending die, the second pipe bending die and the pipe bending disc are arranged on the top surface of the base in sequence, the pipe fitting raw material is conveyed to the material moving device by the feeding device, then the pipe fitting is conveyed between the first pipe bending die and the second pipe bending die by the material moving device, and the pipe bending effect of the first pipe bending die and the second pipe bending die is matched with the guiding effects of a plurality of guiding pieces on the pipe bending disc and the guiding wheels on the pipe fitting bending direction and the moving direction, so that the automatic pipe bending work is completed, and the work efficiency is improved; the pipe bending disc is arranged horizontally, and the pipe fitting can be supported by the pipe bending disc, so that the working mode of the conventional vertical pipe bending of the annular pipe fitting is changed, the working stability of the pipe bending is improved, and two coupling movements on the pipe fitting are performed on the same plane, so that the operation is convenient; the second mounting frame, the first mounting frame and the second mounting frame are sequentially arranged between the material moving device and the material loading device, wherein two first aligning rollers symmetrically arranged in the vertical direction are arranged in the first mounting frame, two second aligning rollers symmetrically arranged in the horizontal direction are arranged in the second mounting frame, and the upper, lower, left and right positions of the pipe fitting can be adjusted by utilizing the first aligning rollers and the second aligning rollers, so that the material loading positions of the pipe fitting raw material loaded each time can be kept consistent, the phenomenon of dislocation between the pipe fitting raw material and the pipe fitting raw material can be avoided, the stability of material moving and the accuracy of pipe bending work can be ensured, and the working efficiency and the pipe bending effect can be improved; the two second bending dies are arranged in the mounting frame, so that the structural stability is improved; meanwhile, the fixing device is arranged on one side of the first pipe bending die, and the fixing device can be used for supporting the fed pipe fitting raw materials to replace the supporting effect of the material moving device, so that the material moving device can perform feeding work on the next pipe fitting in the pipe bending process, and the working efficiency is further improved; meanwhile, the supporting effect of the fixing device can also ensure that the pipe fitting is kept stable in the pipe bending process of the pipe fitting, so that the pipe bending effect is improved. In addition, the utility model also provides a positioning frame on the aligning seat, and the positioning frame is provided with a positioning roller and a positioning piece, so that the positioning roller can provide a driving force and a supporting force for the original feeding of the pipe fitting, thereby further improving the stability of the feeding work; the positioning cylinder and the Hall sensor are arranged on the positioning piece, and the positioning cylinder can be used for driving the positioning piece to move up and down, so that the positioning device can be better suitable for positioning of pipe fitting raw materials with different sizes, and the application range is expanded; the Hall sensor can timely judge that the pipe passes when the positioning piece is in contact with the pipe raw material, so as to control the work of the following material moving device and the positioning device, thereby further improving the working efficiency; the material moving rack is arranged on the T-shaped sensor of the base, the material moving sliding rails are arranged on two sides of the material moving rack, and the material moving sliding rails can be used for supporting two sides of the moving seat, so that the stability of the structure is improved; the material moving rack is meshed with the material moving motor, so that the pipe bending speed of pipe fitting raw materials can be better matched, and the smoothness of the whole work is ensured; the fixing frame is arranged on one side of the material moving motor, the material moving channel, the elastic gripping pieces and the telescopic sleeve are arranged on the fixing frame, and the telescopic sleeve is driven to move back and forth through the telescopic cylinder, so that one end part of each elastic gripping piece can finish the actions of approaching to each other and keeping away from each other, the elastic gripping pieces can grip and release the pipe fittings, the phenomena of material moving, releasing reset and the like of the whole material moving device can be further realized, and the whole structure is simple; two third mounting frames which are symmetrically arranged are arranged on one side of the fixing frame, two third aligning rollers are arranged in each third mounting frame, and the third aligning rollers can be used for supporting the pipe fittings, so that the stability of material moving work is further ensured; by arranging the supporting channel and the two fourth mounting rods, the aligned pipe fitting raw materials in the alignment process can be supported, and the stability of the subsequent pipe fitting raw materials is ensured; the feeding conveyor belt is provided with the plurality of uniformly distributed separators, so that the feeding work of a single pipe fitting can be ensured by the separators; the buffer seat and the buffer channel are arranged to slow down the speed of the pipe in the process that the pipe falls onto the material conveying moving seat, so that the phenomenon that the impact force is increased and the pipe is damaged or the material conveying rolling wheels are damaged due to high speed in the falling process is avoided, the service life of the whole body is prolonged, the rejection rate is reduced, and the production cost is reduced; by arranging the detection light curtain, whether the pipe passes through can be judged in time, so that the phenomenon that the pipe is stacked or falls off is avoided, and the production cost is further reduced; through the guide piece that sets up the slope form, utilize the guide piece can lead to the tip of the pipe fitting that the return bend was accomplished, avoid it to enter into first return bend cover half and second return bend cover half or fixing device in follow-up return bend in-process because of gravity, lead to the phenomenon emergence of return bend trouble to not only guarantee the effect of return bend, can also improve work efficiency. Therefore, the utility model discloses not only can conveniently operate, still have the return bend effectual, work efficiency is high, stability is high, long service life, low in production cost, simple structure and application scope wide advantage.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a side view of the loading frame;

FIG. 4 is a schematic structural view of a second mounting frame;

FIG. 5 is a schematic structural view of a first mounting frame;

FIG. 6 is a side view of the telescoping sleeve;

FIG. 7 is a schematic structural view of a first bending die;

FIG. 8 is a side view of the stationary mold;

FIG. 9 is an enlarged view of a portion of FIG. 1 at A;

fig. 10 is a partially enlarged view at B in fig. 1.

The labels in the figures are: 1-a base, 2-a first pipe bending die, 3-a mounting frame, 4-a second pipe bending die, 5-a pipe bending ring groove, 6-a pipe bending disk, 7-a guide, 8-a guide wheel, 9-an alignment seat, 10-a first mounting frame, 11-a first alignment roller, 12-a second mounting frame, 13-a second alignment roller, 14-a positioning frame, 15-a positioning roller, 16-a positioning cylinder, 17-a positioning piece, 18-a Hall sensor, 19-a material moving rack, 20-a material moving slide rail, 21-a material moving seat, 22-a material moving motor, 23-a fixing frame, 24-a material moving channel, 25-a mounting ring, 26-an elastic gripping piece, 27-a fixing groove, 28-an expansion sleeve, 29-an expansion cylinder, 30-a third mounting frame, 31-a third alignment roller, 32-a support base, 33-a support channel, 34-a fourth mounting frame, 35-a fourth alignment roller, 36-a loading frame, 37-a loading driving shaft, 38-a loading motor, 39-a loading driven shaft, 40-a loading separator, 41-a blanking table, 42-a loading slide rail, 43-a loading seat, 44-a loading roller, 45-a loading air cylinder, 46-a buffer frame, 47-a buffer channel, 48-a detection light curtain, 49-a fixed die, 50-a fixed movable die, 51-a fixed air cylinder, 52-a clamping groove and 53-a protection piece.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. An automatic annular pipe bending device is shown in figures 1 to 10 and comprises a base 1, wherein a material moving device is arranged on the top surface of the base 1, and a feeding device is arranged on one side of the material moving device; the other side of the material moving device is provided with a first bending die 2 and a mounting frame 3 which are symmetrically arranged, and two second bending dies 4 which are symmetrically arranged are arranged in the mounting frame 3; a plurality of bent pipe ring grooves 5 which are vertically and uniformly distributed are arranged on the second bent pipe die 4 and the first bent pipe die 2; a fixing device is arranged on one side of the first pipe bending die 2, a pipe bending disc 6 is arranged on the other side of the first pipe bending die, and a plurality of guide pieces 7 which are uniformly distributed in an annular shape are arranged on the top surface of the pipe bending disc 6; a guide wheel 8 is arranged between every two adjacent guide pieces 7; an alignment seat 9 is arranged between the feeding device and the moving device, and a first mounting frame 10 is arranged on the top surface of the alignment seat 9; two first aligning rollers 11 which are vertically and symmetrically distributed are arranged in the first mounting frame 10, and second mounting frames 12 are arranged on two sides of the first mounting frame 10; two second aligning rollers 13 are mounted in each second mounting frame 12 and are distributed transversely and symmetrically.

A positioning frame 14 is arranged on the side surface, close to the feeding device, of the alignment seat 9, and a positioning roller 15 is arranged at the bottom end part of the positioning frame 14; a positioning cylinder 16 is arranged at the top end part of the positioning frame 14, and a positioning piece 17 is connected to the positioning cylinder 16; a Hall sensor 18 is arranged at the bottom end part of the positioning piece 17, and the feeding device and the moving device are both electrically connected with the Hall sensor 18; the material moving device comprises a material moving rack 19 arranged on the top surface of the base 1, and material moving slide rails 20 are arranged on two sides of the material moving rack 19; a material moving seat 21 is slidably mounted between the two material moving slide rails 20, a material moving motor 22 is arranged on the top surface of the material moving seat 21, and the material moving motor 22 is meshed with the material moving rack 19; a fixed frame 23 is arranged on one side, close to the first pipe bending die 2, of the material moving motor 22, and a material moving channel 24 is installed on the fixed frame 23; an installation ring 25 is arranged at the end part of the material moving channel 24 close to the first bending die 2, a plurality of elastic gripping members 26 which are uniformly distributed are annularly arranged on the installation ring 25, and a fixing groove 27 is arranged on the inner side surface of each elastic gripping member 26; a telescopic sleeve 28 is sleeved on the material moving channel 24, and a telescopic cylinder 29 is installed at one end of the telescopic sleeve 28; a telescopic cylinder 29 is installed on the side of the fixed frame 23; all of said elastic gripping members 26 are arranged inside a telescopic sleeve 28; two third mounting frames 30 which are symmetrically arranged are arranged on one side, close to the feeding device, of the fixing frame 23, and two third aligning rollers 31 which are vertically and symmetrically arranged are mounted in each third mounting frame 30; a supporting base 32 is arranged at one end part of the material moving rack 19 close to the feeding device, and a supporting channel 33 is arranged on the top surface of the supporting base 32; a fourth mounting frame 34 is arranged at one end of the supporting channel 33, and two fourth aligning rollers 35 which are vertically and symmetrically arranged are mounted in the fourth mounting frame 34; the elastic gripping member 26 is arranged in an inclined shape, wherein the distance between the end of the elastic gripping member 26 connected with the mounting ring 25 and the inner wall of the telescopic sleeve 28 is larger than the distance between the other end of the elastic gripping member 26 and the inner wall of the telescopic sleeve 28; the feeding device comprises a feeding frame 36, and a feeding driving shaft 37 is mounted at the bottom end part of the feeding frame 36; a feeding motor 38 is arranged at the end part of the feeding driving shaft 37, and a feeding driven shaft 39 is arranged above the feeding driving shaft 37; an inclined feeding conveyor belt is arranged between the feeding driven shaft 39 and the feeding driving shaft 37, and a plurality of uniformly distributed feeding separating parts 40 are arranged on the feeding conveyor belt; a blanking table 41 is arranged on the side surface of the feeding frame 36 close to the feeding driven shaft 39, and a feeding slide rail 42 is arranged on the top surface of the blanking table 41; a feeding seat 43 is slidably mounted on the feeding slide rail 42, and two symmetrically arranged feeding rollers 44 are arranged on the top surface of the feeding seat 43; a feeding cylinder 45 is arranged on one side of the feeding slide rail 42, and the feeding cylinder 45 is connected with the feeding seat 43; two buffer frames 46 which are symmetrically arranged are arranged between the blanking table 41 and the feeding frame 36, and an arc-shaped buffer channel 47 is arranged on the side surface of each buffer frame 46 facing the blanking table 41; the end part of the buffer channel 47 close to the blanking table 41 is lower than the end part of the buffer channel 47 close to the feeding frame 36, a detection light curtain 48 is arranged at the end part of the buffer channel 47 close to the blanking table 41, and the detection light curtain 48 is electrically connected with the feeding motor 38; the fixing device comprises a fixed die 49, and a fixed movable die 50 is arranged on one side of the fixed die 49; the fixed movable die 50 is connected with a fixed cylinder 51, and the side surfaces of the fixed movable die 50 and the fixed die 49 are both provided with a clamping groove 52; all the clamping grooves 52 are arranged between the fixed movable die 50 and the fixed die 49; a protection piece 53 in an inclined shape is arranged at one end part of the elbow disk 6, and the protection piece 53 is arranged at the end part of the elbow moving path; the end of the guard 53 connected to the elbow plate 6 is lower than the other end of the guard 53.

The working principle is as follows: when the device is used, the whole device is connected with an external safe commercial power, and then pipe fitting raw materials needing to be bent are placed on one side of a feeding driven shaft 39 on a feeding frame 36; then, the feeding motor 38 is controlled to be started firstly, the feeding motor 38 drives the feeding driving shaft 37 to rotate after being started, the feeding driving shaft 37 drives the feeding conveyor belt to move after rotating, the feeding conveyor belt drives the feeding driven shaft 39 to rotate after moving, the feeding conveyor belt can circularly move after rotating the feeding driven shaft 39, and the feeding conveyor belt can drive a plurality of feeding partition pieces 40 to synchronously move when circularly moving, so that the feeding partition pieces 40 can singly feed the pipe fittings and move towards the feeding driven shaft 39 along the feeding driving shaft 37; when the pipe fitting was removed to material loading driven shaft 39 top and along with the material loading conveyer belt drives the pipe fitting and continues to remove the back, the pipe fitting can drop on buffering passageway 47 and along with buffering passageway 47 drops on material loading gyro wheel 44 under the effect of self gravity, because buffering passageway 47 is the arc, thereby utilize buffering passageway 47 can cushion the speed of pipe fitting, avoid the great pipe fitting that leads to of impact between pipe fitting and the material loading gyro wheel 44 to drop, the emergence of phenomenons such as deformation, thereby the rejection rate has been reduced.

After the pipe fitting raw material passes through the buffer channel 47 and falls onto the feeding roller 44, the pipe fitting raw material passes through the detection light curtain 48, the detection light curtain 48 detects the passing of the pipe fitting, the feeding cylinder 45, the positioning cylinder 16 and the hall sensor 18 are controlled to be started after 2 seconds, the feeding cylinder 45 drives the feeding seat 43 to move along the feeding slide rail 42 after being started, and the feeding seat 43 drives the pipe fitting raw material on the feeding seat to slowly move towards the first mounting frame 10 and the second mounting frame 12 after moving; after the positioning cylinder 16 is started, the positioning piece 17 is driven to move towards the positioning roller 15; normally, after the feeding cylinder 45 and the positioning cylinder 16 are started for a certain time, the pipe fitting raw material passes through the upper part of the positioning roller 15, and the positioning piece 17 is in contact with the pipe fitting raw material, so that the hall sensor 18 detects the pipe fitting to control the material moving device to be in a waiting state; when the hall sensor 18 is started for a certain time or no power generation signal exists, the hall sensor 18 controls the feeding cylinder 45 to pause firstly, and continues to control the positioning cylinder 16 to start, if the positioning piece 17 cannot detect the pipe fitting raw material, the positioning cylinder 16 is controlled to stop for a certain time, then the feeding cylinder 45 continues to be controlled to start for a certain time, and after the starting time of the feeding cylinder 45 is up, the positioning cylinder 16 is controlled to start, and the process is repeated until the hall sensor 18 detects the existence of the pipe fitting raw material; after the hall sensor 18 detects the pipe fitting raw material, the feeding cylinder 45 is continuously controlled to be started, so that the feeding seat 43 continuously pushes the pipe fitting raw material to move forwards, the pipe fitting raw material sequentially passes through the second mounting frame 12, the first mounting frame 10 and the second mounting frame 12, and when passing through the first second mounting frame 12, the pipe fitting raw material enters between the two second aligning rollers 13, and the left and right positions of the pipe fitting raw material can be subjected to first-step adjustment by using the two second aligning rollers 13 distributed on the left and right sides; after the first-step adjustment is completed, the pipe fitting raw material enters the first mounting frame 10, and the end part of the pipe fitting raw material enters between the two first aligning rollers 11, so that the two first aligning rollers 11 can adjust the upper position and the lower position of the pipe fitting to complete the second-step adjustment because the two first aligning rollers 11 are symmetrically distributed up and down; then the pipe fitting reentries and carries out the second adjustment of the position about the pipe fitting in the second installing frame 12 to can guarantee that the center of the material loading of all pipe fittings keeps unanimous, and then can make all pipe fittings keep unanimous from beginning to end at the in-process of material loading, and then avoided the pipe fitting phenomenon such as dislocation to appear, and then guaranteed follow-up return bend effect.

After the pipe fitting alignment is completed, the end part of the pipe fitting sequentially passes through the two fourth alignment rollers 35, the support channel 33 and the two groups of third alignment rollers 31 and finally enters the material moving channel 24; after the pipe fitting enters the material moving channel 24 for a period of time, the telescopic cylinder 29 is controlled to be started, the telescopic cylinder 29 can drive the telescopic sleeve 28 to move towards the direction away from the fixed frame 23 after being started, the telescopic sleeve 28 can push the elastic gripping member 26 to be folded inwards after moving, so that the elastic gripping member 26 enters the telescopic sleeve 28, and the pipe fitting is clamped between all the fixed grooves 27 after the elastic gripping member 26 is folded, so that the end part of the pipe fitting is kept stable; then controlling the material moving motor 22 to start for a certain time, wherein the material moving motor 22 is meshed with the material moving rack 19, so that the material moving base 21 is driven to move in the process of mutual meshing transmission of the material moving motor 22 and the material moving rack 19, the material moving base 21 can stably move along the material moving slide rail 20, the whole material moving device is driven to move after the material moving base 21 moves, the material moving device drives the pipe fitting raw material to move, and the pipe fitting raw material passes through the fixed die 49 and the fixed movable die 50 and enters between the first elbow die 2 and the second elbow die 4; then, the fixed air cylinder 51 is controlled to be started, the fixed air cylinder 51 drives the fixed movable die 50 to move towards the fixed die 49 after being started, so that the fixed movable die 50 and the clamping groove 52 on the fixed die 49 can fix and support the pipe fitting raw material to a certain extent, and then the pipe fitting raw material can be subjected to first-step pipe bending work under the action of the first pipe bending die 2 and the second pipe bending die 4 along with the continuous driving of the material moving seat 21; after the starting time of the material moving motor 22 is up, the telescopic cylinder 29 is controlled to stop, so that the telescopic cylinder 29 drives the telescopic sleeve 28 to move, the acting force of the telescopic sleeve 28 on the elastic gripping members 26 disappears, all the elastic gripping members 226 are separated from each other, and the elastic gripping members 26 loosen the pipe; then, the material moving motor 22 is controlled to be started reversely for a certain time, so that the material moving seat 21 returns to the initial position, at this time, the material feeding device is controlled to convey the next pipe fitting raw material to the material moving device, after the next pipe fitting raw material moves to the position, the material moving motor 22 is controlled to be started for a certain time, the material moving motor 22 drives the material moving seat 21, the following pipe fittings and the previous pipe fittings to move together after being started, so that the whole material moving device can drive the two pipe fittings to move forwards synchronously, and at this time, the pipe fitting raw material which has finished the first step of pipe bending work can move forwards under the continuous pushing of the material moving device, so that the pipe bending work is continued; and the pipe fitting that accomplishes the elbow section on the pipe fitting raw materials can enter into the return bend dish 6 on, from annular direction removal under the guide effect at guide 7 and leading wheel 8, the tip of the pipe fitting of accomplishing the return bend at last is along with the ascending removal of protection piece 53 slope, avoids intact pipe fitting tip to enter into between first return bend mould 2 and the second return bend mould 4 to guaranteed the return bend effect and avoided the phenomenon of pipe fitting screens to appear, improved work efficiency.

Claims (9)

1. Automatic change annular pipe return bend equipment, its characterized in that: the device comprises a base (1), wherein a material moving device is arranged on the top surface of the base (1), and a feeding device is arranged on one side of the material moving device; a first bending die (2) and a mounting frame (3) which are symmetrically arranged are arranged on the other side of the material moving device, and two second bending dies (4) which are symmetrically arranged are arranged in the mounting frame (3); a plurality of bent pipe ring grooves (5) which are vertically and uniformly distributed are arranged on the second bent pipe die (4) and the first bent pipe die (2); one side of the first pipe bending die (2) is provided with a fixing device, the other side of the first pipe bending die is provided with a pipe bending disc (6), and the top surface of the pipe bending disc (6) is provided with a plurality of guide pieces (7) which are uniformly distributed in an annular shape; a guide wheel (8) is arranged between every two adjacent guide pieces (7); an alignment seat (9) is arranged between the feeding device and the moving device, and a first mounting frame (10) is arranged on the top surface of the alignment seat (9); two first aligning rollers (11) which are vertically and symmetrically distributed are arranged in the first mounting frame (10), and second mounting frames (12) are arranged on two sides of the first mounting frame (10); two second aligning rollers (13) which are transversely and symmetrically distributed are arranged in each second mounting frame (12).

2. The automated annular tube bending apparatus according to claim 1, wherein: a positioning frame (14) is arranged on the side surface, close to the feeding device, of the alignment seat (9), and a positioning roller (15) is arranged at the bottom end part of the positioning frame (14); a positioning cylinder (16) is arranged at the top end part of the positioning frame (14), and a positioning piece (17) is connected to the positioning cylinder (16); the bottom end of the positioning piece (17) is provided with a Hall sensor (18), and the feeding device and the moving device are both electrically connected with the Hall sensor (18).

3. The automated annular tube bending apparatus according to claim 1, wherein: the material moving device comprises a material moving rack (19) arranged on the top surface of the base (1), and material moving sliding rails (20) are arranged on two sides of the material moving rack (19); a material moving seat (21) is slidably arranged between the two material moving sliding rails (20), a material moving motor (22) is arranged on the top surface of the material moving seat (21), and the material moving motor (22) is meshed and connected with the material moving rack (19); a fixed frame (23) is arranged on one side, close to the first pipe bending die (2), of the material moving motor (22), and a material moving channel (24) is installed on the fixed frame (23); an installation ring (25) is arranged at the end part, close to the first bending die (2), of the material moving channel (24), a plurality of elastic gripping pieces (26) which are uniformly distributed are annularly installed on the installation ring (25), and a fixing groove (27) is formed in the inner side surface of each elastic gripping piece (26); a telescopic sleeve (28) is sleeved on the material moving channel (24), and a telescopic cylinder (29) is installed at one end of the telescopic sleeve (28); the telescopic cylinder (29) is arranged on the side surface of the fixed frame (23); all the elastic gripping members (26) are arranged in a telescopic sleeve (28).

4. The automated annular tube bending apparatus according to claim 3, wherein: two third mounting frames (30) which are symmetrically arranged are arranged on one side, close to the feeding device, of the fixing frame (23), and two third aligning rollers (31) which are vertically and symmetrically arranged are mounted in each third mounting frame (30); a supporting base (32) is arranged at one end part of the material moving rack (19) close to the feeding device, and a supporting channel (33) is arranged on the top surface of the supporting base (32); one end of the supporting channel (33) is provided with a fourth mounting frame (34), and two fourth aligning rollers (35) which are vertically and symmetrically arranged are mounted in the fourth mounting frame (34).

5. The automated annular tube bending apparatus according to claim 3, wherein: the elastic gripping piece (26) is arranged in an inclined manner, wherein the distance between the end part of the elastic gripping piece (26) connected with the mounting ring (25) and the inner wall of the telescopic sleeve (28) is greater than the distance between the other end part of the elastic gripping piece (26) and the inner wall of the telescopic sleeve (28).

6. The automated annular tube bending apparatus according to claim 1, wherein: the feeding device comprises a feeding frame (36), and a feeding driving shaft (37) is mounted at the bottom end part of the feeding frame (36); a feeding motor (38) is installed at the end part of the feeding driving shaft (37), and a feeding driven shaft (39) is arranged above the feeding driving shaft (37); an inclined feeding conveyor belt is arranged between the feeding driven shaft (39) and the feeding driving shaft (37), and a plurality of uniformly distributed feeding separating parts (40) are arranged on the feeding conveyor belt; a blanking table (41) is arranged on the side surface, close to the feeding driven shaft (39), of the feeding frame (36), and a feeding slide rail (42) is arranged on the top surface of the blanking table (41); a feeding seat (43) is slidably mounted on the feeding slide rail (42), and two symmetrically-arranged feeding rollers (44) are arranged on the top surface of the feeding seat (43); a feeding cylinder (45) is arranged on one side of the feeding slide rail (42), and the feeding cylinder (45) is connected with a feeding seat (43).

7. The automated annular tube bending apparatus according to claim 6, wherein: two buffer frames (46) which are symmetrically arranged are arranged between the blanking table (41) and the feeding frame (36), and an arc-shaped buffer channel (47) is arranged on the side surface, facing the blanking table (41), of each buffer frame (46); the end part of the buffer channel (47) close to the blanking table (41) is lower than the end part of the buffer channel (47) close to the feeding frame (36), a detection light curtain (48) is arranged at the end part of the buffer channel (47) close to the blanking table (41), and the detection light curtain (48) is electrically connected with the feeding motor (38).

8. The automated annular tube bending apparatus according to claim 1, wherein: the fixing device comprises a fixed die (49), and a fixed movable die (50) is arranged on one side of the fixed die (49); a fixed cylinder (51) is connected to the fixed movable die (50), and clamping grooves (52) are formed in the side surfaces of the fixed movable die (50) and the fixed die (49); all the clamping grooves (52) are arranged between the fixed movable die (50) and the fixed die (49).

9. The automated annular pipe bending apparatus according to any one of claims 1 to 8, wherein: one end part of the elbow disc (6) is provided with an inclined protection piece (53), and the protection piece (53) is arranged at the end part of the elbow moving path; the end of the guard (53) connected to the elbow plate (6) is lower than the other end of the guard (53).

Images