CN219805486U - Automatic feeding device for double-rotation elbow - Google Patents

Abstract

The utility model discloses an automatic feeding device of a double-rotation elbow, which comprises a discharging mechanism, a feeding mechanism, a clamping piece mechanism and a pushing piece mechanism, wherein the discharging mechanism is connected with the feeding mechanism; the elbow is sent into the feeding mechanism by the blanking mechanism, the clamping piece mechanism is used for clamping the elbow conveyed by the feeding mechanism and sending the elbow into the pushing piece mechanism, and the pushing piece mechanism sends the elbow into the upper piece slide carriage of the tapping machine; the clamping piece mechanism comprises a feeding cylinder, a rotating piece cylinder and a clamping jaw cylinder; the feeding cylinder and the rotating member cylinder are swing cylinders; the rotating member cylinder is fixedly connected to an output shaft of the feeding cylinder; the clamping jaw cylinder is provided with clamping jaw, and the clamping jaw cylinder is fixedly connected to an output shaft of the rotating member cylinder; the feeding cylinder drives the clamping piece clamping jaw to swing between the material outlet position of the feeding mechanism and the material inlet position of the pushing mechanism; and a rib diameter direction sensor is arranged at the discharge end of the feeding mechanism, and is used for judging the rib diameter direction of the elbow and controlling whether the rotating piece cylinder works or not. The device has the advantages of high feeding speed and high efficiency.

Description

Double-rotation elbow automatic feeding device

Technical Field

The utility model relates to a feeding device, in particular to a double-rotation elbow automatic feeding device.

Background

Elbow tapping is an important process in elbow production, and is to cut internal threads into the hole of a workpiece by using a tap. At present, a double-head tapping machine is mainly used for tapping the elbow, and the double-head tapping machine conveys the elbow on a slide carriage of the tapping machine to a processing station to automatically complete tapping. At present, elbow is arranged in the slide carriage of tapping machine only the operator manually places this method.

The manual placement mode enables each operator to only watch 2 to 3 devices; when one device is faulty and needs to be handled by an operator, other devices often have no elbow in the chute to stop tapping. Therefore, the mode of feeding the tapping machine slide carriage has the advantages of technical lag, low level, low automation degree, low production efficiency and high comprehensive cost.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an efficient double-rotation elbow automatic feeding device.

In order to solve the technical problems, the utility model adopts the following technical scheme: the device comprises a blanking mechanism, a feeding mechanism, a clamping piece mechanism and a pushing piece mechanism; the elbow is sent into the feeding mechanism by the blanking mechanism, the clamping piece mechanism is used for clamping the elbow conveyed by the feeding mechanism and sending the elbow into the pushing piece mechanism, and the pushing piece mechanism sends the elbow into the upper piece slide carriage of the tapping machine; the clamping piece mechanism comprises a feeding cylinder, a rotating piece cylinder and a clamping jaw cylinder; the feeding cylinder and the rotating member cylinder are swing cylinders; the rotating member cylinder is fixedly connected to an output shaft of the feeding cylinder; the clamping jaw cylinder is provided with clamping jaw, and the clamping jaw cylinder is fixedly connected to an output shaft of the rotating member cylinder; the feeding cylinder drives the clamping piece clamping jaw to swing between the material outlet position of the feeding mechanism and the material inlet position of the pushing mechanism; a bar diameter direction sensor is arranged at the discharge end of the feeding mechanism, the rib diameter direction sensor judges the rib diameter direction of the elbow and controls whether the rotating piece cylinder works or not.

The feeding mechanism comprises a linear vibration feeder and a sequencing track; the sorting track is positioned between the blanking mechanism and the clamping piece mechanism, and the sorting track is subjected to vibration feeding by the linear vibration feeder.

The sequencing track adopts a V-shaped track. The rear end of the discharging of the sequencing track is a feeding area; the track height of the feeding area is lower than the height of other parts of the sorting track, and baffles are arranged on two sides of the feeding area; the interval between the baffles is matched with the pipe diameter of the elbow.

The feeding mechanism is also provided with a material combing plate and a material combing cylinder; the material carding plate is positioned above the sequencing rail, and a material carding opening for preventing the transverse gesture of the elbow from passing through is formed below the material carding plate; the output shaft of the material combing cylinder is fixedly connected with the material combing plate, and the material combing cylinder can push the material combing plate along the conveying direction of the sequencing track.

The utility model relates to a pushing mechanism comprises a pushing piece cylinder and a pushing head; the pushing head is positioned at the feeding end of the upper piece slide carriage of the tapping machine; the output shaft of the pushing member cylinder is fixedly connected with a pushing head and can push the pushing head in the feeding direction of the upper slide carriage of the tapping machine or in the reverse direction.

The discharging end of the feeding mechanism is provided with a feeding in-place sensor, and the feeding in-place sensor controls whether the feeding cylinder works or not.

The beneficial effects of adopting above-mentioned technical scheme to produce lie in: according to the clamping piece mechanism, through the design of the feeding cylinder, the piece rotating cylinder and the clamping jaw cylinder, the feeding cylinder is used for feeding, the piece rotating cylinder is used for adjusting the gesture of the elbow, and the clamping jaw cylinder is used for clamping the elbow, so that the elbows with different gestures on the feeding mechanism can be fed into the piece pushing mechanism in a specific mode, and the elbows are fed into the piece feeding slide carriage of the tapping machine in a specific gesture, and the feeding of the tapping machine is realized. The utility model can effectively feed the elbow with a specific shape to the tapping machine, can carry out subsequent tapping operation without manually adjusting the posture of the elbow, has the characteristics of high feeding speed, high efficiency, qualified feeding posture and the like, effectively saves labor and improves the feeding and tapping efficiency.

According to the utility model, the V-shaped track is adopted as the sequencing track, and the direction between pipe orifices of the elbows is gradually adjusted to be consistent with the conveying direction by utilizing the matching of the V-shaped structure and the shape of the elbows, so that the elbows can be subjected to posture correction in the vibration feeding process, the follow-up clamping piece mechanism can be clamped and fed conveniently, and the feeding efficiency is further improved. The baffle is arranged at the discharging rear end of the sequencing track, so that the elbow is limited to be capable of reaching the discharging position only in the radial direction of the ribs or in the radial direction of the ribs, the elbow is more standard in posture and more stable in state, the clamping of a follow-up clamping piece mechanism is facilitated, and the feeding efficiency is further improved. The utility model has the characteristics of high feeding speed, high efficiency and more stable feeding.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic illustration of the present utility model is a structural schematic diagram of (a);

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a front view of the present utility model;

FIG. 4 is a top view of the present utility model;

FIG. 5 is a blanking of the present utility model a structural schematic diagram of the mechanism;

FIG. 6 shows a blanking mechanism of the present utility model is a bottom perspective structure schematic diagram;

FIG. 7 is a schematic view of the internal structure of the blanking mechanism of the present utility model;

FIG. 8 shows the feeding of the present utility model a structural schematic diagram of the mechanism;

FIG. 9 is a front view of the feed mechanism of the present utility model;

FIG. 10 is a schematic view of the structure of the comb plate of the present utility model;

FIG. 11 is a schematic view of the structure of the clip mechanism and the pusher mechanism of the present utility model;

fig. 12 is a schematic circuit configuration of the present utility model.

In the figure: the blanking mechanism 1, a blanking hopper 11, an adjusting door 12, a rubber adjusting door 13, a blanking barrel 14, a V-shaped bottom 15, a blanking push rod 16, a blanking cylinder 17 and a nest-preventing bottom 18; the feeding mechanism 2, the opposite-emission photoelectric sensor 21, the sequencing rail 22, the linear vibration feeder 23, the rib diameter direction sensor 24, the feeding in-place sensor 25, the combing cylinder 26, the combing plate 27, the baffle plate 28, the baffle plate 29, the strip-shaped groove 210 and the combing opening 211; the clamping piece mechanism 3, the feeding cylinder 31, the rotating piece cylinder 32, the clamping jaw cylinder 33 and the clamping piece clamping jaw 34; a pusher mechanism 4, a pusher cylinder 41, and a pusher head 42; elbow joint 5, a step of; a feeding chute 6; the chute is full of the sensor 7.

Detailed Description

The automatic feeding device for the double-rotation elbow comprises a discharging mechanism 1, a feeding mechanism 2, a clamping piece mechanism 3 and a pushing piece mechanism 4, as shown in fig. 1 and 2; the elbow 5 is sent into the feeding mechanism 2 by the blanking mechanism 1, the clamping piece mechanism 3 is used for clamping the elbow conveyed by the feeding mechanism and sending the elbow into the pushing piece mechanism 4, the pushing mechanism 4 sends the elbow 5 into the upper slide 6 of the tapping machine. As shown in fig. 2 to 7, the discharging mechanism 1 comprises a discharging hopper 11, an adjusting door 12, a rubber adjusting door 13, a discharging push rod 16 and a discharging cylinder 17. The blanking hopper 11 is of a cylindrical structure, the upper end of the blanking hopper is communicated with the blanking barrel 14, and the blanking barrel 14 can adopt a blanking barrel of a second floor loading area of an original communicated workshop. The lower end of the discharging hopper 11 is provided with a discharging hole, and the discharging hole is opposite to the feeding end of the feeding mechanism. An adjusting door 12 capable of manually controlling lifting is arranged on the discharge hole, and a rubber adjusting door 13 is connected below the adjusting door 12; therefore, the elastic deformation of the rubber regulating door 13 can be utilized to smoothly discharge materials, the materials can be prevented from dropping in a large amount at a time, and the height of the rubber regulating door 13 can be regulated by utilizing the regulating door 12 so as to adapt to the materials with different sizes and pipe diameters. The bottom of the discharging hopper 11 is a V-shaped bottom 15, the rear end of the V-shaped bottom 15 is closed, and the front end of the V-shaped bottom 15 is a part of a discharging hole; the bottom of the discharging hopper 11 is provided with a nest-preventing bottom 18, and the nest-preventing bottom 18 is of a plate-shaped structure with the lower end inclined towards the direction of the discharging hole; the arrangement of the nest-preventing bottom 18 and the V-shaped bottom 15 can prevent the elbow from being overhead at the bottom of the blanking hopper and the blanking can not be smoothly performed. The discharging cylinder 17 is positioned at the rear end of the discharging direction of the discharging hopper 11, the front end of an output shaft of the discharging cylinder 17 is connected with the discharging push rod 16, and the discharging push rod 16 horizontally extends to the discharging port of the discharging hopper 11; in this way, the blanking cylinder 17 can be used for pushing the blanking push rod 16, and the blanking push rod 16 can push out the material-elbow at the bottom of the blanking hopper from the discharge hole, so that the material of the blanking hopper 11 is sent into the feeding mechanism. After the structure is adopted, when the discharging push rod 16 pushes the materials outwards from the discharging hopper 11, the rubber adjusting door 13 bends outwards, and a part of elbow falls into the discharging area of the sequencing track from the lower side of the rubber adjusting door 13; when the discharging push rod 16 is retracted, the elbow which does not fall is pressed back into the discharging hopper 11 under the elastic action of the rubber adjusting door 13, so that the discharging speed from the discharging hopper 11 is adjusted.

As shown in fig. 1 and 2, the feeding mechanism of the double-rotary elbow automatic feeding device comprises a linear vibration feeder 23, a sequencing track 22, a material carding plate 27 and a material carding cylinder 26. As shown in fig. 8-10, the feed end of the sequencing rail 22 is opposite to the discharge port of the blanking hopper 11, and is used for receiving the elbow pushed from the blanking hopper 11 by the blanking cylinder 17. The linear vibration feeder 23 is positioned below the sorting track 22, and vibrates the sorting track 22 to achieve conveying to the discharge end. The sequencing track 22 comprises a blanking area, a sequencing area and a feeding area; the blanking area is positioned at the feeding end and is used for receiving the elbow pushed by the blanking hopper 11; the sequencing area is positioned in the middle and is used for sequencing the elbows and initially adjusting the gestures; the feeding area is positioned at the discharging end and is used for adjusting the gesture of the elbow and discharging. The rails of the blanking area and the sequencing area are V-shaped rails, namely the cross section perpendicular to the feeding direction is V-shaped, and the V-shaped structure is matched with the bending structure of the elbow, so that the direction between pipe orifices of the elbow is gradually adjusted to be consistent with the conveying direction in the conveying process, and the initial adjustment of the elbow posture is realized; and a baffle plate 28 is arranged on the outer side of the upper parts of the rails in the blanking area and the sequencing area and used for preventing the elbow 5 from falling off the rails. The upper part of the feeding area is provided with a material combing plate 27, a material combing opening 211 is arranged at the position below the material combing plate 27 corresponding to the sequencing track 22, the material combing opening 211 is of an M-like structure, the opening width of the material combing opening 211 is smaller than the total length of the elbow, and thus, the transverse elbow can comb materials when passing through the material combing opening 211, and the elbow passes through in a posture that the two openings are arranged along the conveying direction, so that the elbow posture is further adjusted. The material combing plate 27 is fixedly connected with the output shaft of the material combing cylinder 26, the output direction of the output shaft of the material combing cylinder 26 is opposite to or consistent with the conveying direction of the sequencing track 22, in this way, the carding cylinder 26 can push the carding plate 27 along the conveying direction of the sorting track 22 or reversely push the carding plate 27 along the conveying direction of the sorting track 22; such that when the comb cylinder 26 pulls or pushes the comb plate 27, the reject-pose bends will be pushed back by the comb plate 27 into the blanking area for re-sequencing. The feeding area of the sequencing track 22 is positioned at the rear end of the sequencing area, the track height of the feeding area is lower than that of the sequencing area, and baffles 29 are arranged on two sides of the feeding area; the interval between the baffles 29 is matched with the pipe diameter of the elbow 5; in this way, when the elbows conveyed by the sequencing area reach the feeding area, the elbows can be lowered by a certain height and stand up in a rib radial direction or downward posture. The two sides of the outlet end of the baffle 29 are correspondingly provided with strip-shaped grooves 210, and the two strip-shaped grooves are vertically arranged and penetrate through the baffle 29, so that the clamping piece mechanism can clamp the elbow 5 at the position. The blanking area of the sequencing track 22 is provided with a correlation photoelectric sensor 25 for detecting whether an elbow exists in the blanking area, so that the carding cylinder 26 is controlled to comb materials, and the blanking cylinder 17 is controlled to perform blanking. The feeding area is provided with a feeding position sensor 25 and a rib diameter direction sensor 24; the feeding in-place sensor 25 is opposite to the elbow 5 at the tail end of the feeding zone, and the elbow 5 can trigger the feeding in-place sensor 25 no matter in the radial direction or the downward posture of the ribs; the rib diameter direction sensor 24 is opposite to the middle part of the feeding area in the length direction of the elbow 5 at the tail end, and the height from the bottom surface of the feeding area is lower than the diameter of the pipe of the elbow 5, so that the rib diameter direction sensor 24 is not triggered when the elbow 5 is in the radial direction, and the rib diameter direction sensor 24 is triggered when the rib diameter is downward; in this way, when the feeding in-place sensor detects 25 the elbow and the elbow rib diameter shields the rib diameter direction sensor 24, the elbow is in a rib diameter downward posture; when the feed position sensor 25 detects the elbow and the bead diameter of the elbow does not shade the bead diameter direction sensor 24, the elbow is in a bead diameter direction posture. The outer arc of the elbow is positioned above the radial posture of the ribs, and the inner arc of the elbow is positioned above the radial posture of the ribs.

As shown in figures 1-2 and 11, the clamping piece mechanism 3 of the double-rotation elbow automatic feeding device comprises a feeding cylinder 31, a rotating piece cylinder 32 and a clamping jaw cylinder 33; the feeding cylinder 31 and the rotating member cylinder 32 are both swing cylinders. The feeding cylinder 31 is positioned at the rear conveying end of the feeding mechanism 2 and swings between the feeding mechanism 2 and the pushing mechanism 4; the rotor cylinder 32 is fixedly connected to the output shaft of the feeding cylinder 31; the clamping jaw cylinder 33 is provided with a clamping jaw 34, and the clamping jaw cylinder 33 is fixedly connected to an output shaft of the rotating member cylinder 32. By adopting the structure, the feeding cylinder 31 can drive the rotating member cylinder 32 and the clamping jaw cylinder 33 to swing between the feeding mechanism 2 and the pushing member mechanism 4; when the workpiece taking position swings towards the feeding mechanism 2, the clamping jaw 34 swinging along with the workpiece taking position can enter the two grooves 210 of the baffle plate in the feeding area of the sequencing track 22, then the elbow 5 is clamped under the driving of the clamping jaw cylinder 33, and then the workpiece taking position swings towards the workpiece pushing mechanism 4; after the feeding cylinder 31 drives the clamping piece clamping jaw 34 to swing to the feeding position, the clamping piece clamping jaw 34 is driven by the clamping jaw cylinder 33 to loosen the elbow 5, and the elbow 5 can be fed into the pushing mechanism 4. When the clamping piece clamping jaw 34 clamps the elbow and the rib is downward in radial direction, the rotating piece cylinder 32 does not work; when the clamping piece clamping jaw 34 clamps the elbow in the radial direction of the rib, the rotating piece cylinder 31 swings towards the piece taking position and simultaneously rotates 180 degrees, and the rotating piece cylinder 31 swings towards the piece feeding position and simultaneously reversely rotates 180 degrees while rotating the rotating piece cylinder 32; in this way, the bends in the radial direction of the ribs or downward on the sequencing rail 22 can be uniformly fed into the pusher mechanism 4 in the radial direction of the ribs.

1-2 and 11, the pushing mechanism 4 of the double-rotary-elbow automatic feeding device comprises a pushing cylinder 41 and a pushing head 42; the feeding position of the clamping piece clamping jaw 34 is located above the feeding end of the upper piece slide 6 of the tapping machine; the pushing head 42 is of a plate-shaped structure or a block-shaped structure and is positioned at the feeding end of the upper piece slide carriage 6 of the tapping machine; the pushing head 42 is fixedly connected to the output shaft of the pushing cylinder 41, and the pushing direction of the pushing cylinder 41 is the direction of the upper piece slide carriage 6 of the tapping machine. After the structure is adopted, the clamping piece mechanism 3 sends the elbow 5 to the upper piece slide 6 of the tapping machine, the pushing piece cylinder 41 can drive the pushing head 42 to push the elbow 5 into the tapping machine along the upper piece slide 6, and the pushing tapping machine is in the elbow radial direction.

As shown in fig. 2-4, 8 and 12, a slide full sensor 7 is arranged on a slide 6 of the tapping machine. The opposite-shooting photoelectric sensor 21, the feeding in-place sensor 25, the bar diameter direction sensor 24, the chute full sensor 7 and the CPU form a control system. The opposite-emission photoelectric sensor 21 is connected with a P1.0 interface of the CPU, the feeding in-place sensor 25 is connected with the P1.1 interface of the CPU, the bar diameter direction sensor 24 is connected with the P1.2 interface of the CPU, and the carriage full sensor 7 is connected with the P1.3 interface of the CPU. The P2.0 interface of the CPU is connected with the linear vibration feeder 23, the P2.1 interface of the CPU is connected with the combing cylinder 26, the P2.2 interface of the CPU is connected with the blanking cylinder 17, the P2.3 interface of the CPU is connected with the feeding cylinder 31, the P2.4 interface of the CPU is connected with the transfer cylinder 32, and the P2.5 interface of the CPU is connected with the clamping jaw cylinder 33. After the structure is adopted, the feeding device stops the action of each executing mechanism of the feeding device when the chute full sensor 7 detects an elbow, the feeding in-place sensor 25 detects the elbow and the opposite-injection photoelectric sensor 21 detects that the discharging area has an elbow; when the full sensor 7 of the scraper-trough conveyer does not detect an elbow, the pushing mechanism 4 is started to push an elbow to the scraper-trough conveyer of the tapping machine, so that the full sensor 7 of the scraper-trough conveyer detects the elbow again to stop the pushing mechanism. At this time, the feeding cylinder 31 turns to the upper slide 6 and releases the clamping jaw cylinder 33, and an elbow 5 is sent to the upper slide 6; when the feeding in-place sensor 25 does not detect the elbow, the linear vibration feeder 23 is started to perform vibration feeding, and meanwhile, the comb cylinder 26 is started to perform interval action to return the elbow with the unqualified posture to the blanking area for re-sequencing; until the feeding position sensor 25 detects the elbow, the linear vibration feeder 23 stops vibrating feeding and the comb cylinder 26 stops at intervals. The feeding cylinder 31 is started to turn to the workpiece taking position, and meanwhile, whether the workpiece turning cylinder 32 rotates is determined according to the shielding condition of the rib diameter direction sensor 24; when the comb cylinder 26 extends and the opposite-emission photoelectric sensor 21 detects that no elbow exists in the blanking area, the blanking push rod 16 in the blanking hopper 11 extends under the drive of the blanking cylinder 17 to push the elbow in the blanking hopper 11 to the blanking area, and the blanking cylinder 17 acts at intervals until the opposite-emission photoelectric sensor 21 detects that the elbow exists in the blanking area.

As shown in fig. 1-12, the feeding steps of the double-rotary elbow automatic feeding device are as follows: (1) When the opposite-jet photoelectric sensor 21 detects that no elbow exists in the blanking area of the sequencing rail 22, the material combing cylinder 26 drives the material combing plate 27 to push the elbow with the unqualified posture to the blanking area; if the opposite-jet photoelectric sensor 21 detects that the blanking area has an elbow, the device does not act until the opposite-jet photoelectric sensor 21 detects that the blanking area has no elbow when the comb material cylinder 26 stretches out, the blanking push rod 16 in the blanking hopper 11 stretches out under the drive of the blanking cylinder 17 to push the elbow in the blanking hopper 11 to the blanking area, and the blanking cylinder 17 acts at intervals until the opposite-jet photoelectric sensor 21 detects that the blanking area has an elbow.

(2) The feeding mechanism 2 conveys the elbow from the feeding end to the discharging end; when the in-place feeding sensor 25 does not detect the elbow, the linear vibration feeder 23 is started to perform vibration feeding, meanwhile, the comb cylinder 26 is started to perform interval action to return the elbow with the unqualified gesture to the blanking area for re-sequencing, and the linear vibration feeder 23 is stopped to perform vibration feeding and the comb cylinder 26 is stopped to perform interval action until the in-place feeding sensor 25 detects the elbow.

(3) When the feeding in-place sensor 25 detects an elbow, whether the piece-taking cylinder 32 rotates while the feeding cylinder 31 rotates to the piece-taking position is determined according to whether the rib diameter direction sensor 24 is shielded, so that the correct piece-taking control is completed; after the completion of the picking, it is determined whether or not to rotate the transfer cylinder 32 while the transfer cylinder 31 is turning to the upper slide 6, based on the state of the bead diameter direction sensor 24, thereby completing the transfer control.

(4) When the chute full sensor 7 does not detect an elbow and the feeding cylinder 31 is not in the feeding position, the feeding cylinder 41 of the feeding mechanism 4 is started, the feeding head 42 is pushed to push the elbow 5 on the upper chute 6 to the tapping machine, and the feeding mechanism 4 is stopped until the chute full sensor 7 detects the elbow.

Claims (7)

1. The utility model provides a two rotatory elbow automatic feeding devices which characterized in that: the automatic feeding device comprises a blanking mechanism (1), a feeding mechanism (2), a clamping piece mechanism (3) and a pushing piece mechanism (4); the elbow (5) is sent into the feeding mechanism (2) by the blanking mechanism (1), the clamping mechanism (3) is used for clamping the elbow conveyed by the feeding mechanism and sending the elbow into the pushing mechanism (4), and the pushing mechanism (4) sends the elbow into the upper piece slider (6) of the tapping machine; the clamping piece mechanism comprises a feeding cylinder (31), a rotating piece cylinder (32) and a clamping jaw cylinder (33); the feeding cylinder (31) and the rotating member cylinder (32) are swing cylinders; the rotating member cylinder (32) is fixedly connected to an output shaft of the feeding cylinder (31); the clamping jaw cylinder (33) is provided with a clamping jaw (34), and the clamping jaw cylinder (33) is fixedly connected to an output shaft of the rotating member cylinder (32); the feeding cylinder (31) drives the clamping piece clamping jaw (34) to swing between the discharging position of the feeding mechanism (2) and the feeding position of the pushing mechanism (4); the discharging end of the feeding mechanism (2) is provided with a rib diameter direction sensor (24), and the rib diameter direction sensor (24) judges the rib diameter direction of the elbow and controls whether the rotating piece cylinder (32) works or not.

2. The double-swivel elbow automatic feeding device according to claim 1, wherein: the feeding mechanism (2) comprises a linear vibration feeder (23) and a sequencing track (22); the sequencing track (22) is positioned between the blanking mechanism (1) and the clamping piece mechanism (3), and the sequencing track (22) is subjected to vibration feeding by a linear vibration feeder (23).

3. The double-swivel elbow automatic feeding device according to claim 2, wherein: the sequencing track (22) adopts a V-shaped track.

4. The double-swivel elbow automatic feeding device according to claim 2, wherein: the rear end of the discharging of the sequencing rail (22) is a feeding area; the track height of the feeding area is lower than the height of other parts of the sequencing track, and baffles (29) are arranged on two sides of the feeding area; the spacing between the baffles (29) is matched with the pipe diameter of the elbow (5).

5. The double-swivel elbow automatic feeding device according to claim 2, wherein: the feeding mechanism (2) is also provided with a material combing plate (27) and a material combing cylinder (26); the material combing plate (27) is positioned above the sequencing rail (22), and a material combing opening (211) for preventing the transverse gesture of the elbow from passing through is formed below the material combing plate (27); an output shaft of the combing cylinder (26) is fixedly connected with a combing plate (27), and the material combing cylinder (26) can push the material combing plate (27) along the conveying direction of the sequencing track (22).

6. The double-swivel elbow automatic feeding device according to claim 1, wherein: the pushing mechanism (4) comprises a pushing cylinder (41) and a pushing head (42); the pushing head (42) is positioned at the feeding end of the upper piece slide carriage (6) of the tapping machine; the output shaft of the pushing piece cylinder (41) is fixedly connected with a pushing head, and can push the pushing head (42) in the feeding direction or reverse direction of the upper piece slider (6) of the tapping machine.

7. The double-swivel elbow automatic feeding device according to any one of claims 1-6, wherein: the discharging end of the feeding mechanism (2) is provided with a feeding position sensor (25), and the feeding position sensor (25) controls whether the feeding cylinder (31) works or not.