CN210816371U

CN210816371U - Automatic loading and unloading device for pipe shrinking machine

Info

Publication number: CN210816371U
Application number: CN201921880967.8U
Authority: CN
Inventors: 朱晓辉
Original assignee: Zhejiang Sunshine Leisure Products Co ltd
Current assignee: Zhejiang Sunshine Leisure Products Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-06-23
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses an automatic feeding and discharging device for a pipe shrinking machine, which comprises a frame, wherein a positioning seat is arranged on the frame; the positioning seat is provided with a first hydraulic cylinder and a fixed disc; the fixed disc is provided with a pipe fitting through hole and a plurality of arc-shaped guide rails; a guide disc is arranged on one side of the fixed disc, a fixed through hole and a plurality of moving grooves are formed in the guide disc, and a fixed block is arranged in each moving groove; one side of the fixed disc is provided with a rotating motor; a pipe reducing machine and a feeding frame are respectively arranged on two sides of the positioning seat; the feeding frame is provided with a feeding device and a portal frame, and the portal frame is provided with a ball screw, a servo motor and a limiting baffle; a storage hopper and a feeding device are respectively arranged on two sides of the feeding frame; an automatic blanking device is arranged between the positioning seat and the feeding frame. The utility model discloses not only can improve the machining precision, still have application scope wide, low in labor strength, production efficiency height, convenient to use, job stabilization nature are good, low in production cost and the good advantage of structural stability.

Description

Automatic loading and unloading device for pipe shrinking machine

Technical Field

The utility model relates to an auxiliary device for pipe contracting machine, especially last unloader of automation for pipe contracting machine.

Background

In the metal processing industry, pipe-reducing operation on a pipe is one of the operations which are often performed, and the pipe-reducing operation is mainly completed by a pipe-reducing machine at present; when the existing pipe reducing machine is used for reducing pipe, the pipe material is mainly placed in the pipe reducing machine manually for reducing pipe, and the pipe material is manually taken down after the pipe reducing is finished, so that the labor intensity of the whole process is high; and when the pipe material is put into the pipe material manually, because the sizes of the pipe fittings are different, the pipe fittings are difficult to be put into the pipe material damage machine by aligning the center of the pipe damage machine when being put into the pipe material again, and the machining precision is reduced. Therefore, the problems of low machining precision and high labor intensity exist in the process of reusing the existing pipe reducing machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a draw machine automatic unloader that goes up. The utility model discloses not only can improve the machining precision, still have low in labor strength's advantage.

The technical scheme of the utility model: the automatic feeding and discharging device for the pipe shrinking machine comprises a rack, wherein a positioning seat is arranged on the rack; a first hydraulic cylinder is arranged on the bottom surface of the positioning seat, and a fixed disc is arranged on the top surface of the positioning seat; the middle part of the fixed disc is provided with a pipe fitting through hole, and the circumference of the pipe fitting through hole is provided with a plurality of arc-shaped guide rails which are uniformly distributed; one side of the fixed disc is concentrically provided with a guide disc, and the middle part of the guide disc is provided with a fixing through hole; a plurality of moving grooves which are uniformly distributed are arranged on the circumference of the fixed through hole, and a fixed block is arranged in each moving groove; each fixed block is arranged on the corresponding arc-shaped guide rail in a sliding manner; a rotating motor is arranged on one side of the fixed disc, a transmission gear is connected to the rotating motor, and the transmission gear is meshed with the fixed disc; a pipe reducing machine is arranged on one side of the positioning seat, and a feeding frame is arranged on the other side of the positioning seat; the feeding frame is provided with a feeding device in an inclined manner; a portal frame is arranged on the top surface of the feeding frame, and a ball screw is arranged on the inner top surface of the portal frame; one end of the ball screw is connected with a servo motor, and a limit baffle is arranged on the ball screw; one side of the feeding frame is provided with an inclined storage hopper, and the other side of the feeding frame is provided with a feeding device; an automatic blanking device is arranged between the positioning seat and the feeding frame.

In the automatic feeding and discharging device for the pipe shrinking machine, the feeding device comprises a feeding driving shaft, and a feeding motor is connected to the feeding driving shaft; a feeding driven shaft is arranged on one side of the feeding driving shaft, a feeding conveying belt is connected between the feeding driven shaft and the feeding driving shaft, and a plurality of uniformly distributed tube distributing plates are arranged on the edges of two sides of the feeding conveying belt; one end part of the feeding frame, which is close to the feeding device, is provided with a plurality of arc guide plates which are uniformly distributed, and one end of each arc guide plate is connected with the feeding device.

In the automatic feeding and discharging device for the pipe shrinking machine, the feeding driving shaft is arranged at one end part close to the feeding device, and the feeding driving shaft is arranged above the feeding driven shaft.

In the automatic feeding and discharging device for the pipe reducing machine, the automatic feeding device comprises a feeding cylinder, and a feeding seat is connected to the feeding cylinder; two third hydraulic cylinders which are symmetrically distributed are arranged on one side surface of the blanking seat, and each third hydraulic cylinder is connected with a fixed plate; each fixed plate is arranged between the two third hydraulic cylinders.

In the automatic feeding and discharging device for the pipe reducing machine, the feeding device comprises a feeding seat, and a feeding conveyor belt is arranged on the feeding seat; one end of the feeding conveyor belt is connected with a feeding driving shaft, and the other end of the feeding conveyor belt is connected with a feeding driven shaft; the feeding driving shaft is connected with a feeding motor; a cleaning frame is arranged above the feeding conveyor belt, and a cleaning motor is arranged on the cleaning frame; the cleaning motor is provided with a cleaning disc, and the bottom surface of the cleaning disc is provided with a plurality of uniformly distributed brushes.

In the automatic feeding and discharging device for the pipe reducing machine, two symmetrically distributed slide rails are arranged on the surface of the rack corresponding to the pipe reducing machine; a moving seat is arranged between the two sliding rails in a sliding manner, and the pipe reducing machine is arranged on the moving seat; a moving ball screw is arranged on the moving seat, and one end of the moving ball screw is connected with a moving servo motor; and two side surfaces of the movable seat are respectively provided with an inclined supporting rod.

In the automatic feeding and discharging device for the pipe shrinking machine, the fixed disc and the guide disc are provided with discharge channels.

Compared with the prior art, the utility model improves the feeding and discharging mode of the existing pipe reducing machine, and the first hydraulic cylinder is connected on the bottom surface of the positioning seat, so that the first hydraulic cylinder drives the positioning seat to automatically ascend and descend, and further the rigidity of the positioning seat can be adjusted, so that the pipe material on the positioning seat can be coaxial with the feeding hole of the pipe reducing machine, the pipe material can be accurately inserted into the pipe reducing machine, and the processing precision is improved; by arranging the fixed disc, the guide disc and the rotating motor on the top surface of the positioning seat, after the rotating motor is started, the fixed disc is driven to rotate through the transmission gear, the arc-shaped guide rail is driven to move by the rotation of the fixed disc, and the fixed block is driven to linearly move left and right by the guide effect of the guide disc, so that the fixed blocks are mutually closed, pipes with different diameters can be fixed, and the application range is expanded; moreover, the pipe materials can be fixed from an angle through the annular fixing blocks, so that the stability of fixation is improved; the feeding device is arranged on the feeding frame, so that the pipe on the storage hopper can be automatically moved to the feeding device by the feeding device, and then the pipe can be fed to the positioning seat by the feeding device, and automatic feeding is realized; the automatic blanking device is arranged between the positioning seat and the feeding frame, and the pipe fittings which are contracted can be automatically sent out of the rack by the automatic blanking device, so that automatic blanking is realized, manual feeding and discharging operations are replaced, the labor intensity is reduced, and the production efficiency is improved; by arranging the portal frame, the ball screw, the servo motor and the limiting baffle are arranged on the portal frame, and the servo motor is used for driving the ball screw to rotate, so that the limiting baffle is controlled to move, the pipe fittings with shorter lengths can be aligned, the phenomenon that the pipe fittings fall off when the feeding device feeds the pipe fittings with shorter lengths is avoided, the waste rate of materials is reduced, and the use is convenient; simultaneously, through setting up the storage hopper of slope form, utilize the storage hopper can realize once only to the material loading of 1000 ~ 2000 pipe materials, and then can reduce the frequency of workman's feed supplement, and then can further make things convenient for the use. In addition, the utility model also has a plurality of evenly distributed tube separating plates arranged on the edges of the two sides of the feeding conveyor belt, and the tube fittings in the storage hopper can be automatically separated one by utilizing the tube separating plates; the plurality of arc-shaped guide plates which are uniformly distributed are arranged at one end part of the feeding frame, and the arc-shaped guide plates can slow down the speed of the pipe materials which are conveyed to the feeding device by the feeding device, so that the damage to pipe fittings and devices can be avoided as much as possible, the service life is prolonged, and the production cost is reduced; two third hydraulic cylinders which are symmetrically distributed are arranged on one side face of the blanking seat, and the third hydraulic cylinders are used for driving the fixing plates to be close to each other, so that the middle part or the tail part of the tube material can be prevented from being fixed, and the processing stability is further improved; the cleaning motor, the cleaning disc and the hairbrush are arranged above the feeding conveyor belt, the cleaning motor is used for driving the cleaning disc to rotate, and the cleaning disc rotates and then drives the hairbrush to rotate, so that dust on the surface of a pipe material can be brushed away, the phenomenon that the pipe cannot be fastened and the pipe is damaged due to the dust on the surface of the pipe in the cutting process is avoided, and the production cost is further reduced; the movable seat is arranged at the bottom end of the pipe reducing machine and is driven to move left and right through the movable servo motor and the movable ball screw, so that the pipe reducing machine can automatically approach the positioning seat, single-side positioning is carried out on a pipe material, and the machining precision is further improved; the support rods in the inclined shape are arranged on the two side faces of the moving seat, and the moving seat can be supported by the support rods, so that the stability of the structure is improved. Therefore, the utility model discloses not only can improve the machining precision, still have application scope wide, low in labor strength, production efficiency height, convenient to use, job stabilization nature are good, low in production cost and the good advantage of structural stability.

Drawings

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

fig. 2 is a side view of the loading frame;

FIG. 3 is a schematic structural view of a pilot disc;

fig. 4 is a schematic structural view of the fixed disk.

The labels in the figures are: 1-a frame, 2-a positioning seat, 3-a first hydraulic cylinder, 4-a fixed disc, 5-a pipe fitting through hole, 6-an arc-shaped guide rail, 7-a guide disc, 8-a fixed through hole, 9-a moving groove, 10-a fixed block, 11-a rotating motor, 12-a pipe shrinking machine, 13-a feeding frame, 14-a feeding device, 15-a portal frame, 16-a ball screw, 17-a servo motor, 18-a limit baffle, 19-a storage hopper, 20-a feeding device, 21-an automatic blanking device, 22-a feeding driving shaft, 23-a feeding motor, 24-a feeding driven shaft, 25-a feeding conveyor belt, 26-a tube dividing plate, 27-an arc-shaped guide plate, 28-a blanking cylinder, 29-a blanking seat, 30-a third hydraulic cylinder, 31-fixed plate, 32-feeding seat, 33-feeding conveyor belt, 34-feeding driving shaft, 35-feeding driven shaft, 36-feeding motor, 37-cleaning rack, 38-cleaning motor, 39-cleaning disk, 40-brush, 41-slide rail, 42-moving seat, 43-moving ball screw, 44-moving servo motor and 45-supporting rod.

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 loading and unloading device for a pipe shrinking machine is shown in figures 1 to 4 and comprises a rack 1, wherein a positioning seat 2 is arranged on the rack 1; a first hydraulic cylinder 3 is arranged on the bottom surface of the positioning seat 2, and a fixed disc 4 is arranged on the top surface of the positioning seat 2; the middle part of the fixed disc 4 is provided with a pipe fitting through hole 5, and the circumference of the pipe fitting through hole 5 is provided with a plurality of arc-shaped guide rails 6 which are uniformly distributed; a guide disc 7 is concentrically arranged on one side of the fixed disc 4, and a fixing through hole 8 is formed in the middle of the guide disc 7; a plurality of moving grooves 9 which are uniformly distributed are arranged on the circumference of the fixed through hole 8, and a fixed block 10 is arranged in each moving groove 9; each fixed block 10 is arranged on the corresponding arc-shaped guide rail 6 in a sliding manner; a rotating motor 11 is arranged on one side of the fixed disk 4, a transmission gear is connected to the rotating motor 11, and the transmission gear is meshed with the fixed disk 4; a pipe reducing machine 12 is arranged on one side of the positioning seat 2, and a feeding frame 13 is arranged on the other side of the positioning seat; a feeding device 14 is obliquely arranged on the feeding frame 13; a portal frame 15 is arranged on the top surface of the feeding frame 13, and a ball screw 16 is arranged on the inner top surface of the portal frame 15; one end part of the ball screw 16 is connected with a servo motor 17, and a limit baffle 18 is arranged on the ball screw 16; an inclined storage hopper 19 is arranged on one side of the feeding frame 13, and a feeding device 20 is arranged on the other side of the feeding frame; an automatic blanking device 21 is arranged between the positioning seat 2 and the feeding frame 13.

The feeding device 14 comprises a feeding driving shaft 22, and a feeding motor 23 is connected to the feeding driving shaft 22; a feeding driven shaft 24 is arranged on one side of the feeding driving shaft 22, a feeding conveying belt 25 is connected between the feeding driven shaft 24 and the feeding driving shaft 22, and a plurality of pipe distributing plates 26 which are uniformly distributed are arranged on the edges of two sides of the feeding conveying belt 25; a plurality of arc-shaped guide plates 27 which are uniformly distributed are arranged at one end part of the feeding frame 13 close to the feeding device 20, and one end of each arc-shaped guide plate 27 is connected with the feeding device 20; the feeding driving shaft 22 is arranged at one end part close to the feeding device 20, and the feeding driving shaft 22 is arranged above the feeding driven shaft 24; the automatic blanking device 21 comprises a blanking cylinder 28, and a blanking seat 29 is connected to the blanking cylinder 28; two third hydraulic cylinders 30 which are symmetrically distributed are arranged on one side surface of the blanking seat 29, and a fixing plate 31 is connected to each third hydraulic cylinder 30; each fixed plate 31 is arranged between two third hydraulic cylinders 30; the feeding device 20 comprises a feeding seat 32, and a feeding conveyor belt 33 is arranged on the feeding seat 32; one end of the feeding conveyor belt 33 is connected with a feeding driving shaft 34, and the other end is connected with a feeding driven shaft 35; the feeding driving shaft 34 is connected with a feeding motor 36; a cleaning frame 37 is arranged above the feeding conveyor belt 33, and a cleaning motor 38 is arranged on the cleaning frame 37; a cleaning motor 38 is provided with a cleaning disc 39, and the bottom surface of the cleaning disc 39 is provided with a plurality of brushes 40 which are uniformly distributed; two symmetrically distributed slide rails 41 are arranged on the surface of the rack 1 corresponding to the position of the pipe reducing machine 12; a moving seat 42 is arranged between the two slide rails 41 in a sliding manner, and the pipe reducing machine 12 is arranged on the moving seat 42; a moving ball screw 43 is arranged on the moving seat 42, and one end of the moving ball screw 43 is connected with a moving servo motor 44; two side surfaces of the movable seat 42 are provided with inclined support rods 45; and the fixed disc 4 and the guide disc 7 are both provided with a discharging channel.

The working principle is as follows: when the pipe drawing device works, the whole device is connected with an external power supply, then the pipe materials needing to be subjected to pipe drawing are placed into the storage hopper 19, and the storage hopper 19 is arranged in an inclined manner (the lower end of the storage hopper 19 is close to the feeding frame 13), so that the pipe fitting at the foremost end of the pipe materials can automatically roll down to the position where the storage hopper 19 is connected with the feeding conveyor belt 25; then, the feeding motor 23 is started, the feeding motor 23 drives the feeding driving shaft 22 to rotate after being started, the feeding driving shaft 22 drives the feeding conveyor belt 25 to move, and the feeding conveyor belt 25 drives the feeding driven shaft 24 to rotate when moving, so that the feeding conveyor belt 25 can rotate circularly; because the surface of the feeding conveyor belt 25 is provided with the two symmetrically distributed tube dividing plates 26, the tube dividing plates 26 can be used for separating the tubes on the storage hopper 19 one by one along with the assembly of the feeding conveyor belt 25; along with the transmission effect of material loading conveyer belt 25, can remove the pipe material from material loading driven shaft 24 to material loading driving shaft 22 department slowly, at this moment because the setting of arc deflector 27 for the pipe fitting through material loading driving shaft 22 can not directly drop on pay-off conveyer belt 33, and then has avoided the damage to the device and the wearing and tearing to the pipe material, thereby has prolonged life, has reduced manufacturing cost.

After the pipe falls onto the feeding conveyor belt 33, the feeding motor 36 and the cleaning motor 38 are started, the feeding motor 36 drives the feeding driving shaft 34 to rotate after being started, the feeding driving shaft 34 drives the feeding conveyor belt 33 to move after rotating, and the feeding conveyor belt 33 drives the feeding driven shaft 35 to rotate after moving, so that the feeding conveyor belt 33 moves the pipe towards the positioning seat 2; meanwhile, the cleaning motor 38 drives the cleaning disc 39 to rotate after being started, and the cleaning disc 39 rotates to kill and drive the brush 40 on the cleaning disc 39 to rotate, so that the brush 40 can brush out impurities on the surface of the pipe material when the bureaucratic movement occurs, and the phenomenon that the pipe material cannot be clamped subsequently due to the existence of the impurities is avoided, and further the pipe reducing production effect is influenced; when a pipe material is conveyed to the positioning seat 2 by the feeding conveyor belt 33, the pipe material sequentially passes through the pipe fitting through hole 5 in the fixed disc 4 and the fixing through hole 8 in the guide disc 7, the rotating motor 11 is started to drive the transmission gear to rotate, the transmission gear is meshed with the fixed disc 4, the fixed disc 4 rotates along with the transmission gear, the fixed disc 4 rotates to drive the arc-shaped guide rail 6 to rotate, and the arc-shaped guide rail 6 drives the fixed block 10 to rotate together due to the fact that one end of the fixed block 10 is slidably connected with the arc-shaped guide rail 6; because of the arrangement of the moving groove 9 on the guide disc 7, one end part of the fixed block 10 is arranged in the moving groove 9, so that the moving groove 9 can convert the annular motion of the fixed block 10 into horizontal reciprocating motion, and the fixed blocks 10 can be closed to each other; the fixed blocks 10 are mutually close to fix the pipe materials in multiple directions, so that the stability of operation is improved; the fixing device can be suitable for fixing pipe materials with different sizes, and the application range is expanded; then, the third hydraulic cylinder 30 is controlled to be started (because the fixed plate 31, the fixed plate 4 and the guide plate 7 are concentrically arranged), and after the third hydraulic cylinder 30 is started, the two fixed plates 31 are close to each other, so that the end parts of the pipe fittings can be fixed, and the working stability can be further improved; after the pipe material is fixed, moving servo motor 44 is started, moving servo motor 44 can drive moving ball screw 43 to rotate after being started, moving ball screw 43 rotates and can drive moving base 42 to move, so that moving base 42 drives pipe reducing machine 12 to move towards positioning base 2, and then pipe reducing work can be carried out on the end portion of the pipe material.

After the tube is finished, the movable servo motor 44 is controlled to be started reversely, the movable ball screw 43 is driven to rotate reversely after the movable servo motor 44 is started, and the movable ball screw 43 rotates to drive the movable base 42 to move, so that the movable base 42 drives the tube reducing machine 12 to move in the reverse direction of the positioning base 2 and further separate from the tube material; then the rotating motor 11 is controlled to rotate reversely, the rotating motor 11 drives the transmission gear to rotate after being started, the fixed disc 4 can rotate reversely along with the transmission gear because the transmission gear is meshed with the fixed disc 4, the fixed disc 4 rotates to drive the arc-shaped guide rail 6 to rotate, and the arc-shaped guide rail 6 drives the fixed block 10 to rotate together because one end of the fixed block 10 is connected with the arc-shaped guide rail 6 in a sliding manner; because of the arrangement of the moving groove 9 on the guide disc 7, one end part of the fixed block 10 is arranged in the moving groove 9, so that the moving groove 9 can convert the annular motion of the fixed block 10 into horizontal reciprocating motion, the fixed blocks 10 can be separated from each other, and the pipe materials are loosened; and finally, the blanking cylinder 28 is controlled to be started, the blanking cylinder 28 drives the blanking seat 29 to move forwards after being started, and the blanking seat 29 moves forwards and drives the pipe material to move forwards, so that the pipe material can be moved out from the discharge channel on the fixed disc 4 and the guide disc 7, and blanking is completed.

When the diameter of the pipe material is large, in order to enable the axis of the pipe material and the axis of the pipe reducing machine 12 to be on the same horizontal line, the first hydraulic cylinder 3 can be controlled to be started, and the first hydraulic cylinder 3 can drive the positioning seat 2 to move downwards after being started, so that the integral positioning seat 2 moves downwards, and the axis of the pipe material and the axis of the pipe reducing machine 12 can be on the same horizontal line; when the length of the pipe material of processing is less, can start servo motor 17, can drive ball 16 after servo motor 17 starts and rotate, ball 16 rotates and will drives limit baffle 18 and remove from one side of material loading conveyer belt 25 toward the opposite side, and then can utilize limit baffle 18 to replace the branch pipe board 26 of one side, avoided because pipe fitting length is shorter and lead to the pipe fitting to drop from material loading conveyer belt 25 on meeting storage hopper 19 to production efficiency has been improved.

Claims

1. Draw automatic unloader that goes up of pipe machine, its characterized in that: comprises a frame (1), wherein a positioning seat (2) is arranged on the frame (1); a first hydraulic cylinder (3) is arranged on the bottom surface of the positioning seat (2), and a fixed disc (4) is arranged on the top surface of the positioning seat (2); the middle part of the fixed disc (4) is provided with a pipe fitting through hole (5), and the circumference of the pipe fitting through hole (5) is provided with a plurality of arc-shaped guide rails (6) which are uniformly distributed; a guide disc (7) is concentrically arranged on one side of the fixed disc (4), and a fixing through hole (8) is formed in the middle of the guide disc (7); a plurality of moving grooves (9) which are uniformly distributed are formed in the circumference of the fixed through hole (8), and a fixed block (10) is arranged in each moving groove (9); each fixed block (10) is arranged on the corresponding arc-shaped guide rail (6) in a sliding manner; a rotating motor (11) is arranged on one side of the fixed disk (4), a transmission gear is connected to the rotating motor (11), and the transmission gear is meshed with the fixed disk (4); a pipe reducing machine (12) is arranged on one side of the positioning seat (2), and a feeding frame (13) is arranged on the other side of the positioning seat; the feeding frame (13) is provided with a feeding device (14) in an inclined way; a portal frame (15) is arranged on the top surface of the feeding frame (13), and a ball screw (16) is arranged on the inner top surface of the portal frame (15); one end part of the ball screw (16) is connected with a servo motor (17), and the ball screw (16) is provided with a limit baffle (18); an inclined storage hopper (19) is arranged on one side of the feeding frame (13), and a feeding device (20) is arranged on the other side of the feeding frame; an automatic blanking device (21) is arranged between the positioning seat (2) and the feeding frame (13).

2. The automatic loading and unloading device for pipe shrinking machine of claim 1, characterized in that: the feeding device (14) comprises a feeding driving shaft (22), and a feeding motor (23) is connected to the feeding driving shaft (22); a feeding driven shaft (24) is arranged on one side of the feeding driving shaft (22), a feeding conveying belt (25) is connected between the feeding driven shaft (24) and the feeding driving shaft (22), and a plurality of uniformly distributed tube distributing plates (26) are arranged on the edges of two sides of the feeding conveying belt (25); a plurality of arc guide plates (27) which are uniformly distributed are arranged at one end part of the feeding frame (13) close to the feeding device (20), and one end of each arc guide plate (27) is connected with the feeding device (20).

3. The automatic loading and unloading device for pipe shrinking machine of claim 2, characterized in that: the feeding driving shaft (22) is arranged at one end part close to the feeding device (20), and the feeding driving shaft (22) is arranged above the feeding driven shaft (24).

4. The automatic loading and unloading device for pipe shrinking machine of claim 1, characterized in that: the automatic blanking device (21) comprises a blanking cylinder (28), and a blanking seat (29) is connected to the blanking cylinder (28); two third hydraulic cylinders (30) which are symmetrically distributed are arranged on one side surface of the blanking seat (29), and each third hydraulic cylinder (30) is connected with a fixed plate (31); each fixed plate (31) is arranged between two third hydraulic cylinders (30).

5. The automatic loading and unloading device for pipe shrinking machine of claim 1, characterized in that: the feeding device (20) comprises a feeding seat (32), and a feeding conveyor belt (33) is arranged on the feeding seat (32); one end part of the feeding conveyor belt (33) is connected with a feeding driving shaft (34), and the other end part is connected with a feeding driven shaft (35); the feeding driving shaft (34) is connected with a feeding motor (36); a cleaning frame (37) is arranged above the feeding conveyor belt (33), and a cleaning motor (38) is arranged on the cleaning frame (37); a cleaning disc (39) is arranged on the cleaning motor (38), and a plurality of brushes (40) which are uniformly distributed are arranged on the bottom surface of the cleaning disc (39).

6. The automatic loading and unloading device for pipe shrinking machine of claim 1, characterized in that: two slide rails (41) which are symmetrically distributed are arranged on the surface of the rack (1) corresponding to the position of the pipe reducing machine (12); a movable seat (42) is arranged between the two slide rails (41) in a sliding manner, and the pipe reducing machine (12) is arranged on the movable seat (42); a moving ball screw (43) is arranged on the moving seat (42), and one end of the moving ball screw (43) is connected with a moving servo motor (44); two side surfaces of the movable seat (42) are provided with inclined support rods (45).

7. The automatic loading and unloading device for the pipe shrinking machine of any one of claims 1 to 6, wherein: and the fixed disc (4) and the guide disc (7) are both provided with a discharging channel.