CN210754507U - Coiler of coiled pipe - Google Patents

Abstract

The utility model relates to a tubular product processing equipment technical field, concretely relates to coiled pipe bending machine. The utility model provides a pair of coiled pipe bending machine aims at overcoming the current bending machine that exists among the background art and bends the problem that the precision is low. The utility model discloses a coiled pipe bending machine, be used for pressing from both sides tight and crooked bending machine head to the pipe fitting including setting up above the workstation, the bending machine head includes a headstock by servo motor control is rotatory, the lower extreme of headstock is vertical be provided with the reference column and carry out tight piece of clamp to the pipe fitting with the reference column cooperation, the head seat is close to the reference column and presss from both sides tight piece and press from both sides the position clamp with waiting of pipe fitting with tight piece and press from both sides tightly to the workstation during bending, servo motor control headstock is rotatory, makes the reference column buckle to the pipe fitting with pressing from both sides tight piece.

Description

Coil Bender

technical field

The utility model relates to the technical field of pipe processing equipment, in particular to a serpentine pipe bender.

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 for heat dissipation and circulating cooling has increased. The structural setting of the pressure plate is unreasonable, which leads to the problems that the radian of the bending part of the processed pipe fitting is not round enough and the precision is low, and the existing pipe bending machine cannot bend multiple different parts in one bending part of the pipe fitting. The radius in radians.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a serpentine pipe bender, so as to solve the problem of low bending accuracy of the prior art pipe bender in the background art.

The technical scheme of the present invention to achieve the above-mentioned purpose is a serpentine pipe bender.

The serpentine pipe bender produced by the technical solution of the utility model includes a workbench and a pipe bender head arranged above the workbench for clamping and bending the pipe fittings, the pipe bender head includes a The motor controls the rotation of the head base, the upper end of the head base is connected with the output shaft of the servo motor, and the lower end of the head base is vertically provided with a positioning column coaxial with the output shaft of the servo motor. The seat is also provided with a clamping block that cooperates with the positioning column to clamp the pipe, the clamping block is slidably connected to the nose seat, and the clamping block slides on the nose seat. The direction is inclined towards the positioning column, there is a gap between the clamping block and the positioning column for the part to be bent of the pipe piece to enter, and the side of the clamping block facing the positioning column is one with the positioning column. A plane parallel to the axis direction of ;

After the machine head seat moves toward the worktable until the lower end of the clamping block abuts on the worktable, the clamping block gradually approaches the positioning column under the extrusion of the worktable;

When the head seat moves away from the worktable, 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 conveying path of the pipe fittings to the worktable. When the pipe bending head bends the pipe fittings, the auxiliary clamping mechanism clamps the pipe fittings; The movable working plate directly below the pipe bending head, the movable working plate is provided with positioning holes for the positioning columns to extend into, and the outer side of the movable working plate is provided with a fixed platen, and the movable working plate slides Connected to the fixed platen, the pipe bending head always moves synchronously with the moving work plate in the horizontal direction, and the positioning hole is always located just below the positioning column; the pipe fittings pass through the auxiliary clamping mechanism. By making the to-be-bent part of the pipe fitting located directly under the head seat, the auxiliary clamping mechanism clamps the pipe fitting to a position after the feeding is completed, and the head seat moves toward the worktable after the clamping is completed. The position to be bent of the pipe is clamped by the positioning post and the clamping block, and the servo motor controls the rotation of the head base, so that the positioning post and the clamping block bend the pipe.

The clamping block includes a sliding base that is slidably connected to the head seat and a clip mold for clamping and bending the to-be-bent part of the pipe, the sliding base and the clip mold are detachable. connect.

A waist-shaped hole is inclined on the side of the sliding base, and one end of the waist-shaped hole close to the head seat is inclined toward the positioning column. The oblique guide protrusion is fixedly connected with the machine head seat.

The lower end of the clip mold is horizontally provided with a first needle roller, the first needle roller is rotatably connected to the clip mold, and the clip mold is also provided with a second needle roller, the second needle roller It is rotatably 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, and the side surface of the second needle roller and the one side of the clip mold facing the positioning column. face tangent.

The machine head seat is also provided with a reset elastic member for sliding the clamping block downward.

A horizontal sliding rail is horizontally arranged on the fixed table plate below the moving work plate, the length direction of the horizontal sliding rail is the same as the horizontal movement direction of the machine head base, and a sliding rail is arranged below the moving work plate. The moving work plate is slidably connected to the transverse slide rail through the sliding block, the moving work plate is rotatably connected to the sliding block, and the moving work plate rotates with the axis of the positioning hole as the center of rotation .

A lateral moving plate and a vertical moving plate are also arranged between the moving work plate and the pipe bending head, and the lateral moving plate and the vertical moving plate make the moving work plate and the pipe bending head in the same position. Synchronous lateral movement in the horizontal direction, the lateral movement plate is fixedly connected with the mobile work plate, the end of the pipe bending head provided with a servo motor is fixedly connected to the vertical movement plate, the vertical movement plate The sliding connection is made on the lateral moving plate and the vertical moving plate moves in the vertical direction.

The pipe bender head is also fixedly connected with a pressure plate. When the pipe bender head bends the pipe, the pipe bender head drives the pressure plate to press the part of the pipe that has been bent into a serpentine shape against the moving part. work board.

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

Having adopted the above-mentioned technical scheme, the utility model has the following beneficial effects:

(1) In this scheme, the servo motor drives the head base to rotate to make the clamping block clear, and the pipe is rolled on the surface of the positioning column to bend the pipe, and the form of rolling friction is adopted on each contact surface. It makes the quality and precision of the bent pipe better; at the same time, the setting of the sliding block and the oblique guide bump on the machine head seat realizes the automatic clamping and limit of the pipe to be bent, without the need for the workbench. An additional positioning mechanism is provided, which 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, they can adjust the clamps by replacing the clamping molds of different sizes. The gap between the die and the positioning column can be used to adapt to pipes of different diameters.

(2) The setting of the pressure plate in this solution enables the pressure plate to fix the bent part of the pipe when the pipe bender bends the pipe when there are many parts that have been bent and formed, and press the part of the pipe On the moving work plate, this setting can reduce the secondary stretching of the bent part of the pipe due to the inertia of the bent and formed part of the pipe, which affects the forming effect of the pipe and reduces the forming accuracy. A flexible buffer is arranged on the upper part, which can reduce the impact and wear when the pressure plate is in contact with the pipe fittings, and ensure the processing quality of the pipe fittings.

Description of drawings

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

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

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

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

Fig. 5 is a cross-sectional view of the pipe bending head according to the present invention.

In the figure, 1. workbench; 101, mobile work plate; 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 part; 13. Pressing plate; 14. Horizontal sliding rail; 15. Slide block; 16. Horizontal moving plate; 17. Vertical moving plate; 18. Flexible buffer.

Detailed ways

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

Referring to Figures 1 to 5, the pipe bending head 2 includes a head base 3 controlled to rotate by a servo motor, the upper end of the head base 3 is connected with the output shaft of the servo motor, and the lower end of the head base 3 is vertical A positioning column 4 coaxial with the output shaft of the servo motor is directly arranged, and a clamping block 5 that cooperates with the positioning column 4 to clamp the pipe fitting is also arranged on the machine head base 3, and the clamping block 5 is slidably connected to the machine head base. 3, the sliding direction of the clamping block 5 on the machine head base 3 is inclined to the positioning column 4, there is a gap between the clamping block 5 and the positioning column 4 for the part to be bent of the pipe fitting to enter, and the clamping block 5 faces the positioning column. One side of 4 is a plane parallel to the axis direction of the positioning column 4; When the head seat 3 moves away from the worktable 1, the clamping block 5 gradually moves away from the positioning post 4 under the action of its own gravity, and an auxiliary clamping mechanism 6 is also provided on the conveying path of the pipe fittings to the worktable 1. , when the pipe bender head 2 bends the pipe fitting, the auxiliary clamping mechanism 6 clamps the pipe fitting; 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 to the fixed platen 102, and the pipe bending head 2 always works with the mobile work in the horizontal direction. The plate 101 moves synchronously, and 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 under the head seat 3, and the auxiliary clamping mechanism is completed after feeding. 6. Clamp and limit the pipe fittings. After the clamping is completed, the head base 3 approaches the worktable 1 to the positioning column 4 and the clamping block 5 to clamp the pipe fittings to be bent. Servo The motor controls the head base 3 to rotate, so that the positioning column 4 and the clamping block 5 bend the pipe. When bending, the feeding mechanism is used for feeding first, so that the pipe fittings reach the workbench 1 through the auxiliary clamping mechanism 6, and the to-be-bent part of the pipe fittings is located just below the gap between the clamping block 5 and the positioning column 4; After the material is completed, the auxiliary clamping mechanism 6 clamps the pipe fittings, and the pipe bending head 2 moves to the worktable 1, and the positioning column 4 extends into the positioning hole 7 on the worktable 1. When the lower end of the clamping block 5 is in contact with the worktable 1 After contacting, the clamping block 5 slides relative to the head base 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 The clamping of the pipe fitting to be bent is completed. At this time, the servo motor drives the head base 3 to rotate, and the clamping block 5 bends the pipe fitting around the positioning column 4 by 180° based on the positioning column 4; The machine head 2 moves away from the worktable 1, and the clamping block 5 slides relative to the machine head base 3 and gradually moves away from the positioning column 4 under the action of its own gravity. When both the clamping block 5 and the positioning column 4 are located above the pipe fitting, a bending action is completed. At this time, the gap between the positioning column 4 and the clamping block 5 is located just above the section of the pipe fitting that was recently bent. After the pipe head 2 completes one bending of the pipe, the auxiliary clamping mechanism 6 releases the pipe, and the feeding mechanism feeds the pipe again, so that the pipe moves to the table 1 along the length of the pipe for a certain length, and the auxiliary clamping is performed. The mechanism 6 clamps the pipe again. After the clamping is completed, the pipe bending head 2 and the moving work plate 101 move laterally synchronously, so that the gap between the positioning column 4 and the clamping block 5 is moved again to just above the pipe to be bent. , and then the pipe bender head 2 moves to the table 1 until the lower end of the clamping block 5 abuts against the table 1, the clamping block 5 slides relative to the head base 3 under the extrusion of the table 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 to be bent. At this time, the servo motor drives the head base 3 to rotate in the same direction as the previous bending. Rotate in the opposite direction, the clamping block 5 bends the pipe fittings around the positioning column 4 by 180° based on the positioning column 4; Under the action, it slides relative to the head base 3 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 the clamping block 5 and the positioning column 4 are located above the pipe The head 2 is reset, and the bending action opposite to the previous bending direction is completed at this time, and then the above steps are repeated continuously to perform a continuous serpentine bending action on the pipe fittings.

Referring to Figures 1 to 5, the clamping block 5 includes a sliding base 501 slidably connected to the nose base 3 and a clamping die 502 for clamping and bending the to-be-bent part of the pipe. The sliding base 501 and The clip molds 502 are detachably connected. The detachable connection is bolted, and the sliding base 501 and the clip mold 502 are connected by bolts. When bending pipes with different diameters, it is convenient for the staff to adjust the clip mold 502 by replacing different clip molds 502. The gap between the positioning column 4 and the positioning column 4 is used to adapt to the pipe fittings of different pipe diameters.

Referring to Figure 5, the side of the sliding base 501 is inclined with a waist-shaped hole 8, one end of the waist-shaped hole 8 close to the machine head is inclined to the positioning column 4, and a cylindrical oblique guide bump 9 is slidably connected in the waist-shaped hole 8, The oblique guide projection 9 is fixedly connected with the machine head base 3 . The waist-shaped hole 8 and the oblique guide bump 9 have a simple structure, and the coordination work is stable and not easy to fail.

Referring to FIG. 4 , the lower end of the clip mold 502 is provided with a first needle roller 10 horizontally, the first needle roller 10 is rotatably connected with 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 clamping die 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 surface of the second needle roller 11 is tangent to the side of the clamping die 502 facing the positioning column 4 . . When the clip mold 502 bends the pipe, because the lower end of the clip mold 502 is in contact with the table 1, there is dry friction between the two, and the side of the clip mold 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 clamping die 502 and the table 1 into rolling friction. , reducing the wear between the clip mold 502 and the workbench 1, the setting of the second needle roller 11 converts the dry friction between the clip mold 502 and the pipe fittings into rolling friction, reduces the wear on the outer wall of the pipe fittings, and improves the Accuracy of pipe bends.

Referring to FIG. 3 and FIG. 5 , the machine head base 3 is further provided with a reset elastic member 12 for sliding the clamping block 5 downward. The reset elastic member 12 can use a spring. When the head base 3 moves away from the worktable 1, the setting of the reset elastic member 12 ensures that the clamping block 5 can slide downward relative to the head base 3, preventing the clamping block 5 from sliding down. Jam occurs during the process, so that when the nose seat 3 is close to the pipe again, the collision between the clamping block 5 and the pipe can be prevented because the gap between the clamping block 5 and the positioning post 4 is smaller than the diameter of the pipe.

Referring to FIG. 2 and FIG. 3 , a lateral slide rail 14 is arranged horizontally below the mobile work plate 101 on the fixed platen 102 , and the length direction of the lateral slide rail 14 is the same as the horizontal movement direction of the head base A sliding block 15 is arranged below the working plate 101 , the movable working plate 101 is slidably connected with the lateral slide rail 14 through the sliding block 15 , the movable working plate 101 is rotatably connected with the sliding block 15 , and the movable working plate 101 takes the axis of the positioning hole 7 as the center of rotation turn. The setting structure of the lateral slide rail 14 is simple, and it can guide the moving work plate 101 in the horizontal direction and also play a supporting role for the moving work plate 101 in the vertical direction. During 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 of the surface of the pipe.

Referring to Fig. 1 to Fig. 3, a lateral moving plate 16 and a vertical moving plate 17 are also provided between the moving work plate 101 and the pipe bending head 2, and the lateral moving plate 16 and the vertical moving plate 17 make the moving work The plate 101 and the pipe bending head 2 move synchronously and laterally in the horizontal direction, the lateral moving plate 16 is fixedly connected with the moving work plate 101, and the end of the pipe bending head 2 provided with the servo motor is fixedly connected to the vertical moving plate 17, and the vertical moving plate 17 is vertically connected. 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 lateral moving plate 16 and the vertical moving plate 17 ensures the synchronous lateral movement of the pipe bending head 2 and the moving work plate 101 in the horizontal direction, and the vertical moving plate 17 plays a role in the vertical direction of the pipe bending head 2. It has a guiding effect, and the structure is simple and easy to maintain in the later period.

Referring to Figures 1 and 2, a pressure plate 13 is also fixedly connected to the pipe bender head 2. When the pipe bender head 2 bends the pipe, the pipe bender head 2 drives the pressure plate 13 to bend the pipe. The serpentine portion is pressed against the moving work plate 101 . When there are many parts of the pipe that have been bent into a serpentine shape, the pressing plate 13 can fix the part of the pipe that has been bent into a serpentine shape when the pipe bending head 2 bends the pipe, and press the part of the pipe on the moving work 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 affects the forming effect of the pipe and reduces the forming accuracy.

Referring to Figures 1 and 2, a flexible buffer member 18 is also provided on the side of the pressing plate 13 in contact with the pipe fitting. The arrangement of the flexible buffer member 18 can reduce the impact generated when the pressure plate 13 is in contact with the diameter of the pipe, thereby ensuring the processing quality of the pipe fitting.

working principle:

When bending, the feeding mechanism is used for feeding first, so that the pipe fittings reach the workbench 1 through the auxiliary clamping mechanism 6, and the to-be-bent part of the pipe fittings is located just 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 and the pipe bending head 2 connected with the vertical moving plate 17 moves to the worktable 1, at this time, the positioning column 4 protrudes into the positioning hole 7 on the worktable 1. , when the lower end of the clamping block 5 is in contact with the table 1, the clamping block 5 compresses the reset elastic member 12 under the pressing of the table 1 and gradually approaches the positioning column 4 along the inclination direction of the waist hole 8 until the positioning The column 4 and the clamping block 5 clamp the part of the pipe to be bent, the pressure plate 13 contacts the part of the pipe that has been bent into a serpentine shape through the flexible buffer 18 and fixes the part of the pipe on the moving work plate 101, and then servo The motor drives the head base 3 to rotate, and the clamping block 5 bends the pipe fittings around the positioning post 4 by 180° with the positioning post 4 as the reference. At this time, the moving work plate 101 also uses the axis of the positioning post 4 as the rotation axis to follow the head base 3 Rotating together, the arrangement of the first needle roller 10 and the second needle roller 11 converts the dry friction between the pipe fittings and the pipe bender into rolling friction; after the bending is completed, the pipe bender head 2 moves away from the worktable 1 and clamps The block 5 slides relative to the head base 3 and gradually moves away from the positioning column 4 under the action of its own gravity or the elasticity 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 posts 4 are all located above the pipe fitting, a bending action is completed. At this time, the gap between the positioning post 4 and the clamping block 5 is located just above the most recently bent section of the pipe fitting. When the pipe bending head 2 completes one bending of the pipe fitting, the auxiliary clamping mechanism 6 releases the pipe fitting, and the feeding mechanism feeds the pipe fitting again, so that the pipe fitting moves along the length direction of the pipe fitting to the table 1 for a certain length, and the auxiliary clamping mechanism 6 releases the pipe fitting. The clamping mechanism 6 clamps the pipe again. After the clamping is completed, the pipe bending head 2 and the moving work plate 101 move synchronously laterally through the action of the lateral moving plate 16, the vertical moving plate 17 and the lateral sliding rail 14, so that the positioning column 4 The gap between the clamping block 5 and the clamping block 5 is moved again to just above the part to be bent of the pipe fitting, and then the pipe bending head 2 moves to the table 1 until the lower end of the clamping block 5 is in contact with the table 1, and the clamping block 5 Under the extrusion of the worktable 1, it slides relative to the head base 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. At this time, the servo motor drives the head base 3 to rotate in the opposite direction of the rotation direction of the previous bending, and the clamping block 5 bends the pipe fittings 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 and gradually moves away from the positioning column 4 under the action of its own gravity, and loosens the pipe that has been bent once, when the pipe bending head 2. After moving the clamping block 5 and the positioning column 4 above the pipe fittings, the pipe bending head 2 completes the reset. At this time, the bending action opposite to the previous bending direction is completed. A continuous bending action that bends the pipe into a serpentine shape.

The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention, and some changes that those skilled in the art may make to some parts of them all reflect the principles of the present invention and belong to the protection scope of the present invention. within.

Claims (9)

1. A serpentine pipe bender, comprising a workbench (1) and a pipe bender head (2) arranged above the workbench (1) for clamping and bending pipe fittings, characterized in that: the pipe bender The machine head (2) includes a machine head base (3) controlled to rotate by a servo motor, the upper end of the machine head base (3) is connected with the output shaft of the servo motor, and the lower end of the machine head base (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 fitting is also arranged on the machine head seat (3) , the clamping block (5) is slidably connected to the head base (3), and the sliding direction of the clamping block (5) on the head base (3) is toward the positioning column (4). ) inclined, there is a gap between the clamping block (5) and the positioning column (4) for the part to be bent of the pipe to enter, and the clamping block (5) faces the positioning column (4) side is a plane parallel to the axial direction of the positioning column (4); After the machine head seat (3) moves toward the worktable (1) until the lower end of the clamping block (5) is in contact with the worktable (1), the clamping block (5) is placed on the worktable. (1) gradually approach the positioning column (4) under the extrusion; When the machine head seat (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; An auxiliary clamping mechanism (6) is also provided on the conveying path of the pipe to the worktable (1). Clamping is performed; the worktable (1) includes a mobile work plate (101) disposed directly below the pipe bending head (2), and the mobile work plate (101) is provided with a positioning column (101). 4) A positioning hole (7) extending into the mobile work plate (101) is provided with a fixed platen (102) on the outer side, and the mobile work plate (101) is slidably connected to the fixed platen (102) , the pipe bending head (2) always moves synchronously with the moving work 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 to-be-bent part of the pipe fitting is located directly below the head seat (3). After the tightening is completed, the head seat (3) approaches the worktable (1) until the positioning column (4) and the clamping block (5) clamp the part to be bent of the pipe fitting, controlled by a servo motor. The machine head seat (3) rotates so that 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) comprises a sliding base (501) slidably connected with the head seat (3) and a sliding base (501) for the pipe fittings. A clip mold (502) for clamping and bending the part to be bent, and the sliding base (501) and the clip mold (502) are detachably connected. 3. The serpentine pipe bender 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 toward the positioning column (4), and a cylindrical oblique guide protrusion (9) is slidably connected in the waist-shaped hole (8). The nose seat (3) is fixedly connected. 4. The serpentine pipe bender according to claim 2, wherein the lower end of the clamping die (502) is horizontally provided with a first needle roller (10), and the first needle roller (10) It is rotatably connected with the clip mold (502), and the clip mold (502) is also provided with a second needle roller (11), and the second needle roller (11) is rotatably connected to the clip mold (502). 502) and the axis direction of the second needle roller (11) is the same as the axis direction of the positioning column (4), the side surface of the second needle roller (11) and the clamping die (502) are facing One side of the positioning column (4) is tangent. 5. The serpentine pipe bender according to claim 1, characterized in that: the machine head seat (3) is further provided with a reset elastic member (12) for sliding the clamping block (5) downwards ). 6. The serpentine pipe bender according to claim 1, characterized in that: a transverse slide rail (14) is horizontally arranged on the fixed platen (102) below the movable work plate (101), The length direction of the lateral slide rail (14) is the same as the horizontal movement direction of the machine head base (3), a sliding block (15) is arranged under the moving work plate (101), and the moving work plate (101) ) is slidably connected to the lateral slide rail (14) through the sliding block (15), the moving work plate (101) is rotatably connected to the sliding block (15), and the moving work plate (101) is so The axis of the positioning hole (7) is the rotation center. 7. The serpentine pipe bender according to claim 1, characterized in that: a lateral moving plate (16) and a lateral moving plate (16) and The vertical moving plate (17), the lateral moving plate (16) and the vertical moving plate (17) make the moving work plate (101) and the pipe bending head (2) move synchronously and laterally in the horizontal direction , the lateral moving plate (16) is fixedly connected with the moving work 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 vertical moving plate (17) is slidably connected to the lateral moving plate (16) and the vertical moving plate (17) moves in the vertical direction. 8. The serpentine pipe bender according to claim 1, characterized in that: the pipe bender head (2) is also fixedly connected with a pressure plate (13), and the pipe bender head (2) is opposite to the pipe fittings. During bending, the pipe bending 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 work plate (101). 9 . The serpentine pipe bender according to claim 8 , wherein a flexible buffer member ( 18 ) is further provided on the side of the pressing plate ( 13 ) in contact with the pipe fitting. 10 .

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