CN110270609A - Snake-Shaped Tube Bending Machine - Google Patents

Abstract

The invention relates to the technical field of pipe processing equipment, in particular to a serpentine pipe bending machine. A serpentine pipe bending machine provided by the present invention aims to overcome the problem of low bending precision of existing pipe bending machines in the background art. The invention discloses a serpentine pipe bending machine, which includes a pipe bending head arranged above a workbench for clamping and bending pipe fittings. The pipe bending head includes a head base whose rotation is controlled by a servo motor. The lower end of the head base is vertically provided with a positioning column and a clamping block that cooperates with the positioning column to clamp the pipe fitting. Tight, the servo motor controls the rotation of the headstock, so that the positioning column and the clamping block bend the pipe.

Description

Serpentine tube bending machine

technical field

The invention relates to the technical field of pipe processing equipment, in particular to a serpentine pipe bending machine.

Background technique

In recent years, with the continuous development of my country's environmental protection construction and various new technologies, the demand for serpentine tubes that require heat dissipation and circulating cooling is increasing. The existing serpentine tube benders are due to the molds and The structure setting of the pressure plate is unreasonable, which leads to problems such as the arc of the bending part of the processed pipe fitting is not round enough, the precision is low, and the existing pipe bending machine cannot bend multiple different bending parts in one bending part of the pipe fitting. Radius in radians.

Contents of the invention

Aiming at the deficiencies of the prior art, the object of the present invention is to provide a serpentine pipe bender to solve the problem of low bending precision of the existing pipe bender in the background art.

The technical solution of the present invention to achieve the above object is a serpentine pipe bending machine.

The serpentine pipe bender produced by the technical solution of the present invention includes a workbench and a pipe bender head arranged above the workbench for clamping and bending pipe fittings, and the bender head includes a servo motor Control the rotation of the headstock, the upper end of the headstock is connected to the output shaft of the servo motor, the lower end of the headstock is vertically provided with a positioning column coaxial with the output shaft of the servo motor, the headstock There is also a clamping block that cooperates with the positioning column to clamp the pipe fittings. The clamping block is slidably connected to the headstock, and the sliding direction of the clamping block on the headstock is Inclined towards the positioning column, there is a gap between the clamping block and the positioning column for the part of the pipe to be bent to enter, and the side of the clamping block facing the positioning column is a A plane parallel to the axis direction;

After the headstock moves toward the workbench until the lower end of the clamping block abuts the workbench, the clamping block gradually approaches the positioning column under the extrusion of the workbench;

When the headstock moves away from the workbench, the clamping block gradually moves away from the positioning column under the action of its own gravity;

An auxiliary clamping mechanism is also provided on the path of the pipe fittings to the workbench. When the pipe bending head bends the pipe fittings, the auxiliary clamping mechanism clamps the pipe fittings; The mobile working plate directly below the pipe bending head is provided with a positioning hole for the positioning column to extend into the mobile working plate, and a fixed platen is provided on the outer side of the mobile working plate, and the mobile working plate slides Connected to the fixed platen, the pipe bending head always moves synchronously with the mobile working plate in the horizontal direction, and the positioning hole is always located directly below the positioning column; the pipe is passed through the auxiliary clamping mechanism By making the part of the pipe fitting to be bent directly below the headstock, the auxiliary clamping mechanism clamps and limits the pipe fittings after the feeding is completed, and the headstock moves toward the workbench after the clamping is completed. Close to the positioning column and the clamping block to clamp the part of the pipe to be bent, the servo motor controls the rotation of the headstock, so that the positioning column and the clamping block bend the pipe.

The clamping block includes a sliding base that is slidably connected to the headstock and a clip mold that clamps and bends the part of the pipe to be bent, and the sliding base and the clip mold are detachable connect.

The side of the sliding base is obliquely provided with a waist-shaped hole, and one end of the waist-shaped hole close to the headstock is inclined to the positioning column, and a cylindrical oblique guide projection is slidably connected to the waist-shaped hole. The oblique guide projection is fixedly connected with the headstock.

The lower end of the clip mold is horizontally provided with a first needle roller, which is rotatably connected with the clip mold, and a second needle roller is also arranged on the clip mold, and the second needle roller Rotationally connected in the clip mold and the axis direction of the second needle roller is the same as the axis direction of the positioning column, the side of the second needle roller is the same as the side of the clip mold facing the positioning column face tangent.

The headstock is also provided with a return elastic member for sliding the clamping block downward.

Horizontal sliding rails are horizontally arranged on the fixed platen below the mobile working plate, the length direction of the horizontal sliding rails is the same as the horizontal movement direction of the headstock, and a sliding rail is arranged below the mobile working plate. block, the moving working plate is slidably connected with the transverse slide rail through the sliding block, the moving working plate is connected with the sliding block in rotation, and the moving working plate rotates with the axis of the positioning hole as the rotation center .

A horizontal moving plate and a vertical moving plate are also arranged between the moving working plate and the pipe bending head, and the horizontal moving plate and the vertical moving plate make the moving working plate and the pipe bending head Synchronously move laterally in the horizontal direction, the laterally moving plate is fixedly connected to the mobile working plate, one end of the pipe bending head provided with a servo motor is fixedly connected to the vertically moving plate, and the vertically moving plate Slidingly connected to the laterally movable plate and the vertically movable plate moves in the vertical direction.

The pipe bending head is also fixedly connected with a pressure plate. When the pipe bending head bends the pipe, the pipe bending head drives the pressure plate to press the serpentine part of the pipe on the moving part. work board.

The side of the pressure plate in contact with the pipe is also provided with a flexible buffer.

Adopt above-mentioned technical scheme, the present invention has following beneficial effect:

(1) In this scheme, the servo motor drives the headstock to rotate to make the clamping block pass through, and the pipe is bent on the surface of the positioning column by rolling, and the form of rolling friction is adopted on each contact surface. The quality of the bent pipe fittings is better and the precision is higher; at the same time, the automatic clamping and limiting of the pipe fittings to be bent is realized through the setting of the sliding block and the inclined guide bump on the headstock, without the need for the workbench The additional positioning mechanism greatly simplifies the structure of the equipment; a detachable and replaceable structure is set in the clamping block. When the staff needs to bend pipes with different diameters, the clamp can be adjusted by replacing the clip mold of different sizes. The gap between the piece mold and the positioning column is used to adapt to pipe fittings of different diameters.

(2) The setting of the pressing plate in this scheme makes it possible for the pressing plate to fix the bent part of the pipe fitting when the pipe bending head bends the pipe fitting when there are many parts that have been bent and formed, and press the part of the pipe fitting On the moving working plate, this setting can reduce the secondary stretching of the bent part of the pipe due to the inertia of the bent part of the pipe, and affect the forming effect of the pipe and reduce the forming accuracy. At the same time, the contact surface between the pressure plate and the pipe There is a flexible buffer on the top, which can reduce the impact and wear caused by the contact between the pressure plate and the pipe fittings, and ensure the processing quality of the pipe fittings.

Description of drawings

Fig. 1 is the structural representation of serpentine pipe bender of the present invention;

Fig. 2 is the front view of the serpentine pipe bender of the present invention;

Fig. 3 is a side view of the serpentine pipe bender of the present invention;

Fig. 4 is a schematic structural view of the pipe bending head of the present invention;

Fig. 5 is a sectional view of the pipe bending head of the present invention.

In the figure, 1. Workbench; 101. Mobile working board; 102. Fixed platen; 2. Pipe bending head; 3. Head seat; 4. Positioning column; 5. Clamping block; 501. Sliding base; 502 , clip mold; 6, auxiliary clamping mechanism; 7, positioning hole; 8, waist hole; 9, oblique guide bump; 10, first needle roller; 11, second needle roller; 12, reset elastic member; 13. Press plate; 14. Horizontal slide rail; 15. Slide block; 16. Horizontal moving plate; 17. Vertical moving plate; 18. Flexible buffer.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings. As shown in FIGS. 1 to 5, the serpentine pipe bender includes a workbench 1 and a pipe bender head arranged above the workbench 1 for clamping and bending pipe fittings. 2.

Referring to accompanying drawings 1 to 5, the pipe bending head 2 includes a headstock 3 controlled by a servo motor to rotate, the upper end of the headstock 3 is connected to the output shaft of the servo motor, and the lower end of the headstock 3 is vertical. A positioning column 4 that is coaxial with the output shaft of the servo motor is arranged directly, and a clamping block 5 that cooperates with the positioning column 4 to clamp the pipe fittings is also provided on the headstock 3, and the clamping block 5 is slidably connected to the headstock. 3, the sliding direction of the clamping block 5 on the headstock 3 is inclined towards the positioning column 4, there is a gap between the clamping block 5 and the positioning column 4 for the part of the pipe to be bent to enter, and the clamping block 5 faces the positioning column One side of 4 is a plane parallel to the axial direction of the positioning column 4; the headstock 3 moves toward the workbench 1 until the lower end of the clamping block 5 abuts against the workbench 1, and the clamping block 5 squeezes on the workbench 1 When the headstock 3 moves away from the worktable 1, the clamping block 5 gradually moves away from the positioning column 4 under the action of its own gravity, and an auxiliary clamping mechanism 6 is also provided on the path of pipe fittings to the workbench 1. , when the pipe bending head 2 bends the pipe fittings, the auxiliary clamping mechanism 6 clamps the pipe fittings; The positioning hole 7 for the positioning column 4 to extend into, the outer side of the mobile work plate 101 is provided with a fixed platen 102, the mobile work plate 101 is slidably connected on the fixed platen 102, and the pipe bending head 2 is always in line with the mobile work in the horizontal direction. The plate 101 moves synchronously, the positioning hole 7 is always located directly below the positioning column 4; the pipe passes through the auxiliary clamping mechanism 6 so that the part to be bent of the pipe is located directly below the headstock 3, and the auxiliary clamping mechanism is completed after feeding 6. Clamp and limit the pipe fittings. After the clamping is completed, the headstock 3 approaches the workbench 1 to the positioning column 4 and the clamping block 5 to clamp the parts to be bent of the pipe fittings, and the servo The motor controls the rotation of the headstock 3 so that the positioning column 4 and the clamping block 5 bend the pipe. When bending, the material is first loaded by the feeding mechanism, so that the pipe passes through the auxiliary clamping mechanism 6 to reach the workbench 1, and the part to be bent of the pipe is located directly below the gap between the clamping block 5 and the positioning column 4; After the material is finished, the auxiliary clamping mechanism 6 clamps the pipe fittings and at the same time the pipe bending head 2 moves to the workbench 1, and the positioning column 4 extends into the positioning hole 7 on the workbench 1. When the lower end of the clamping block 5 and the workbench 1 After the abutment, the clamping block 5 slides relative to the headstock 3 under the extrusion of the worktable 1 and gradually approaches the positioning column 4. When the pipe bending head 2 moves to the rotating position, the clamping block 5 and the positioning column 4 Complete the clamping of the pipe fittings to be bent. At this time, the servo motor drives the headstock 3 to rotate, and the clamping block 5 bends the pipe fittings around the positioning pillar 4 by 180° based on the positioning pillar 4; after the bending is completed, the bending pipe The head 2 moves away from the worktable 1, the clamping block 5 slides relative to the head base 3 under the action of its own gravity and gradually moves away from the positioning column 4, and loosens the pipe that has been bent once. When the pipe bending head 2 moves to When both the clamping block 5 and the positioning column 4 are located above the pipe, a bending action is completed. At this time, the gap between the positioning column 4 and the clamping block 5 is located directly above the section of the pipe that was bent last time. After the pipe head 2 completes a bending of the pipe fittings, the auxiliary clamping mechanism 6 releases the pipe fittings, and the feeding mechanism reloads the pipe fittings, so that the pipe fittings move along the length direction of the pipe fittings to the workbench 1 for a certain length to assist in clamping. The mechanism 6 clamps the pipe again. After the clamping is completed, the pipe bender head 2 and the mobile working plate 101 move laterally synchronously, so that the gap between the positioning column 4 and the clamping block 5 moves again to the position directly above the pipe to be bent. , and then the pipe bending head 2 moves to the workbench 1 until the lower end of the clamping block 5 abuts against the workbench 1, and the clamping block 5 slides relative to the head seat 3 under the extrusion of the workbench 1 and gradually approaches the positioning column 4 , when the pipe bending head 2 moves to the rotating position, the clamping block 5 and the positioning column 4 complete the clamping of the part of the pipe to be bent, at this time, the servo motor drives the head seat 3 to rotate in the same direction as the previous bending Rotate in the opposite direction, the clamping block 5 bends the pipe 180° around the positioning column 4 with the positioning column 4 as the reference; Under the action, slide relative to the head seat 3 and gradually move away from the positioning column 4, and loosen the pipe that has been bent once. The head 2 completes the reset, and at this time completes the bending action opposite to the previous bending direction, and then repeats the above steps continuously to perform continuous serpentine bending action on the pipe fitting.

Referring to accompanying drawings 1 to 5, the clamping block 5 includes a sliding base 501 that is slidably connected to the headstock 3 and a clip mold 502 that clamps and bends the part of the pipe to be bent. The sliding base 501 and the The clip molds 502 are detachably connected. The detachable connection adopts bolt connection, and the sliding base 501 and the clip mold 502 are connected by bolts. When bending pipe fittings with different pipe diameters, it is convenient for the staff to adjust the clip mold 502 by replacing different clip molds 502 The gap with the positioning column 4 is used to adapt to pipe fittings of different pipe diameters.

Referring to the accompanying drawing 5, the side of the sliding base 501 is obliquely provided with a waist-shaped hole 8, and one end of the waist-shaped hole 8 near the machine head is inclined to the positioning column 4, and a cylindrical oblique guide lug 9 is slidably connected in the waist-shaped hole 8, The oblique guiding lug 9 is fixedly connected with the headstock 3 . The structure of the waist-shaped hole 8 and the oblique guiding lug 9 is simple, and the cooperation is stable and difficult to break down.

Referring to Figure 4, the lower end of the clip mold 502 is horizontally provided with a first needle roller 10, the first needle roller 10 is rotatably connected to the clip mold 502, and the clip mold 502 is also provided with a second needle roller 11. The two needle rollers 11 are rotatably connected in the clip mold 502 and the axis direction of the second needle roller 11 is the same as the axis direction of the positioning column 4, and the side of the second needle roller 11 is tangent to the side of the clip mold 502 facing the positioning column 4 . When the clip die 502 bends the pipe, since the lower end of the clip die 502 abuts against the workbench 1, there is dry friction between the two, and at the same time, the side of the clip die 502 in contact with the pipe is bending the pipe During the process, the deformation caused by the bending of the pipe will also cause dry friction between the surface and the pipe wall. The setting of the first needle roller 10 converts the dry friction between the clip mold 502 and the worktable 1 into rolling friction , reducing the wear between the clip die 502 and the workbench 1, the setting of the second needle roller 11 converts the dry friction between the clip die 502 and the pipe into rolling friction, which reduces the wear of the outer wall of the pipe and improves the Accuracy of pipe bends.

Referring to accompanying drawings 3 and 5, the headstock 3 is also provided with a reset elastic member 12 for sliding the clamping block 5 downward. The return elastic member 12 can adopt a spring. When the headstock 3 moves away from the workbench 1, the setting of the reset elastic member 12 ensures that the clamping block 5 can slide downward relative to the headstock 3, preventing the clamping block 5 from sliding down. Jamming occurs during the process, so that when the headstock 3 approaches the pipe again, it can prevent the clamping block 5 from colliding with the pipe due to the gap between the clamping block 5 and the positioning column 4 being smaller than the diameter of the pipe.

With reference to accompanying drawing 2 and shown in accompanying drawing 3, the horizontal slide rail 14 that is positioned at the below of mobile working plate 101 on the fixed platen 102 is horizontally provided with, and the lengthwise direction of horizontal slide rail 14 is identical with the horizontal movement direction of machine headstock 3, moves A sliding block 15 is arranged below the working plate 101, and the moving working plate 101 is slidably connected with the transverse slide rail 14 through the sliding block 15, and the moving working plate 101 is connected with the sliding block 15 in rotation, and the moving working plate 101 takes the axis of the positioning hole 7 as the center of rotation turn. The setting structure of the horizontal slide rail 14 is simple, and it can also play a supporting role in the vertical direction while guiding the mobile working plate 101 in the horizontal direction. When bending, the movable working plate 101 can rotate together with the bent part of the pipe, which reduces the dry friction between the pipe and the movable working plate 101, and reduces the wear on the surface of the pipe.

With reference to accompanying drawing 1 to shown in accompanying drawing 3, also be provided with lateral movement plate 16 and vertical movement plate 17 between mobile working plate 101 and pipe bender head 2, transverse movement plate 16 and vertical movement plate 17 make mobile work The plate 101 and the pipe bending head 2 move horizontally synchronously in the horizontal direction, the lateral moving plate 16 is fixedly connected with the mobile working plate 101, and the end of the pipe bending head 2 provided with a servo motor is fixedly connected to the vertical moving plate 17, The moving plate 17 is slidably connected to the lateral moving plate 16 and the vertical moving plate 17 moves in the vertical direction. The arrangement of the laterally moving plate 16 and the vertically moving plate 17 has ensured the synchronous lateral movement of the pipe bender head 2 and the mobile working plate 101 in the horizontal direction, and the vertically moving plate 17 plays a role in the vertical direction of the pipe bender head 2. Guiding function, and the structure is simple and easy for later maintenance.

Referring to the accompanying drawings 1 and 2, the pipe bending head 2 is also fixedly connected with a pressure plate 13. When the pipe bending head 2 bends the pipe, the pipe bending head 2 drives the pressure plate 13 to bend the pipe. The serpentine part is pressed on the mobile working plate 101 . When there are many pipe fittings that have been bent into a serpentine shape, the pressing plate 13 can fix the part of the pipe fitting that has been bent into a serpentine shape when the pipe bender head 2 bends the pipe fittings, and press this part of the pipe fittings on the mobile working plate 101, such a setting can reduce the secondary stretching of the bent part of the pipe due to the inertia of the part of the pipe that has been bent into a serpentine shape, and affect the forming effect of the pipe and reduce the forming accuracy.

Referring to Figure 1 and Figure 2, the side of the pressure plate 13 in contact with the pipe is also provided with a flexible buffer 18. The arrangement of the flexible buffer 18 can reduce the impact generated when the pressure plate 13 contacts the pipe diameter, thus ensuring the processing quality of the pipe fittings.

working principle:

When bending, the material is first loaded by the feeding mechanism, so that the pipe passes through the auxiliary clamping mechanism 6 to reach the workbench 1, and the part to be bent of the pipe is located directly below the gap between the clamping block 5 and the positioning column 4; After the material is finished, the auxiliary clamping mechanism 6 clamps the pipe fittings and at the same time the pipe bending head 2 connected with the vertical moving plate 17 moves to the workbench 1, at this time the positioning column 4 extends into the positioning hole 7 on the workbench 1 , when the lower end of the clamping block 5 abuts against the workbench 1, the clamping block 5 compresses and resets the elastic member 12 under the extrusion of the workbench 1 and gradually approaches the positioning column 4 along the inclination direction of the waist hole 8 until it is positioned The column 4 and the clamping block 5 clamp the part of the pipe to be bent, and the pressure plate 13 contacts the part of the pipe that has been bent into a serpentine through the flexible buffer 18 and fixes this part of the pipe on the mobile working plate 101, and then the servo The motor drives the headstock 3 to rotate, and the clamping block 5 bends the pipe 180° around the positioning column 4 with the positioning column 4 as the reference. At this time, the moving working plate 101 also follows the machine headstock 3 with the axis of the positioning column 4 as the rotation axis. Rotating together, the setting of the first needle roller 10 and the second needle roller 11 converts the dry friction between the pipe fitting and the pipe bender into rolling friction; after the bending is completed, the pipe bender head 2 moves away from the workbench 1 and clamps The block 5 slides relative to the headstock 3 and gradually moves away from the positioning column 4 under its own gravity or the elastic action of the reset elastic member 12, and loosens the pipe that has been bent once. When the pipe bending head 2 moves to the clamping block 5 and Once the positioning columns 4 are located above the pipe, a bending action is completed. At this time, the gap between the positioning columns 4 and the clamping block 5 is located directly above the last section of the pipe that was bent. After the pipe bending machine head 2 completes a bending of the pipe fittings, the auxiliary clamping mechanism 6 releases the pipe fittings, and the feeding mechanism reloads the pipe fittings, so that the pipe fittings move along the length direction of the pipe fittings to the workbench 1 for a certain length. The clamping mechanism 6 clamps the pipe fittings again. After the clamping is completed, the pipe bending head 2 and the mobile working plate 101 move laterally synchronously through the action of the horizontal moving plate 16, the vertical moving plate 17 and the horizontal slide rail 14, so that the positioning column 4 The gap between the clamping block 5 and the clamping block 5 moves again to the position directly above the pipe to be bent, and then the pipe bending head 2 moves to the worktable 1 until the lower end of the clamping block 5 abuts the worktable 1, and the clamping block 5 Under the extrusion of the workbench 1, it slides relative to the head seat 3 and gradually approaches the positioning column 4. When the pipe bending head 2 moves to the rotating position, the clamping block 5 and the positioning column 4 complete the clamping of the pipe to be bent. Tight, at this time, the servo motor drives the headstock 3 to rotate in the opposite direction to the direction of rotation during the previous bending, and the clamping block 5 bends the pipe fitting around the positioning column 4 by 180° based on the positioning column 4; after the bending is completed , the pipe bending head 2 moves away from the workbench 1, the clamping block 5 slides relative to the head base 3 under the action of its own gravity and gradually moves away from the positioning column 4, and loosens the pipe that has been bent once. When the pipe bending head 2 Move until the clamping block 5 and the positioning column 4 are located above the pipe fittings, and then the pipe bending head 2 completes the reset. At this time, the bending action opposite to the previous bending direction is completed, and then the pipe fittings can be finished by repeating the above steps. Continuously bend the pipe into a serpentine bending action.

The above-mentioned technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention, and some changes that may be made by those skilled in the art to some parts thereof reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims (9)

1. Serpentine pipe bending machine, including a workbench (1) and a pipe bender head (2) arranged above the workbench (1) for clamping and bending pipe fittings, characterized in that: the bender The machine head (2) includes a machine headstock (3) controlled by a servo motor to rotate, the upper end of the machine headstock (3) is connected with the output shaft of the servo motor, and the lower end of the machine headstock (3) is vertical A positioning column (4) coaxial with the output shaft of the servo motor is provided, and a clamping block (5) that cooperates with the positioning column (4) to clamp the pipe is also provided on the headstock (3) , the clamping block (5) is slidably connected to the headstock (3), and the sliding direction of the clamping block (5) on the headstock (3) is towards the positioning column (4 ) is inclined, there is a gap between the clamping block (5) and the positioning column (4) for the part of the pipe to be bent to enter, and the clamping block (5) faces one side of the positioning column (4) is a plane parallel to the axial direction of the positioning column (4); After the headstock (3) moves toward the workbench (1) until the lower end of the clamping block (5) abuts against the workbench (1), the clamping block (5) rests on the workbench (1) gradually approaches the positioning column (4) under the extrusion; When the headstock (3) moves away from the workbench (1), the clamping block (5) gradually moves away from the positioning column (4) under the action of its own gravity; An auxiliary clamping mechanism (6) is also provided on the path of the pipe fittings to the workbench (1). When the pipe bending head (2) bends the pipe fittings, the auxiliary clamping mechanism (6) Clamping; the workbench (1) includes a mobile work plate (101) arranged directly below the pipe bender head (2), and the mobile work plate (101) is provided with a positioning post ( 4) The positioning hole (7) protruding in, the outer side of the mobile working plate (101) is provided with a fixed platen (102), and the mobile working plate (101) is slidably connected to the fixed platen (102) , the pipe bending head (2) always moves synchronously with the mobile working plate (101) in the horizontal direction, and the positioning hole (7) is always located directly below the positioning column (4); The clamping mechanism (6) passes through so that the part to be bent of the pipe fitting is located directly below the headstock (3), and after the feeding is completed, the auxiliary clamping mechanism (6) clamps and limits the pipe fitting, After the tightening is completed, the headstock (3) approaches the workbench (1) to the positioning column (4) and the clamping block (5) to clamp the part of the pipe to be bent, and the servo motor controls The headstock (3) rotates to make the positioning column (4) and the clamping block (5) bend the pipe. 2. The serpentine pipe bender according to claim 1, characterized in that: the clamping block (5) includes a sliding base (501) slidingly connected to the headstock (3) and a A clip mold (502) for clamping and bending the part to be bent, the sliding base (501) and the clip mold (502) are detachably connected. 3. The serpentine pipe bending machine according to claim 2, characterized in that: the side of the sliding base (501) is obliquely provided with a waist-shaped hole (8), and the waist-shaped hole (8) is close to the machine One end of the head seat (3) is inclined to the positioning column (4), and a cylindrical oblique guide lug (9) is slidably connected to the waist hole (8), and the oblique guide lug (9) is connected to the oblique guide lug (9). The headstock (3) is fixedly connected. 4. The serpentine pipe bender according to claim 1, characterized in that: the lower end of the clip mold (502) is horizontally provided with a first needle roller (10), and the first needle roller (10) Rotately connected with the clip mold (502), the second needle roller (11) is also arranged on the clip mold (502), and the second needle roller (11) is rotatably connected to the clip mold ( 502) and the axial direction of the second needle roller (11) is the same as the axial direction of the positioning column (4), the side of the second needle roller (11) faces the clip mold (502) One side of the positioning column (4) is tangent. 5. The serpentine pipe bending machine according to claim 1, characterized in that: the headstock (3) is also provided with a reset elastic member (12) that allows the clamping block (5) to slide downward ). 6. The serpentine pipe bender according to claim 1, characterized in that: the fixed platen (102) is horizontally provided with a horizontal slide rail (14) below the movable working plate (101), The length direction of the transverse slide rail (14) is the same as the horizontal movement direction of the headstock (3), and a sliding block (15) is arranged below the moving working plate (101), and the moving working plate (101 ) is slidably connected with the transverse slide rail (14) through the sliding block (15), the mobile working plate (101) is rotationally connected with the sliding block (15), and the mobile working plate (101) is connected with the The axis of the positioning hole (7) rotates as the center of rotation. 7. The serpentine pipe bender according to claim 1, characterized in that: a transverse moving plate (16) and a The vertical moving plate (17), the horizontal moving plate (16) and the vertical moving plate (17) make the moving working plate (101) and the pipe bending head (2) move horizontally synchronously in the horizontal direction , the laterally moving plate (16) is fixedly connected to the moving working plate (101), and one end of the pipe bending head (2) provided with a servo motor is fixedly connected to the vertically moving plate (17), The vertical moving plate (17) is slidably connected to the lateral moving plate (16), and the vertical moving plate (17) moves vertically. 8. The serpentine pipe bending machine according to claim 1, characterized in that: the pipe bending head (2) is also fixedly connected with a pressure plate (13), and the pipe bending head (2) is When bending, the pipe bending machine head (2) drives the pressing plate (13) to press the part of the pipe that has been bent into a serpentine shape on the moving working plate (101). 9. The serpentine pipe bending machine according to claim 8, characterized in that: the side of the pressure plate (13) in contact with the pipe is also provided with a flexible buffer (18).