Roll forming equipment for middle section of copper pipe

Abstract

The invention discloses copper pipe middle section rolling forming equipment, relates to the field of copper pipe rolling, and aims to solve the problems that in the prior art, the manual processing efficiency is low, and the product quality is inconvenient to control, the adopted technical scheme is that the copper pipe middle section rolling forming equipment comprises a support, a mounting position is arranged on the support, and a rocker arm is hinged to the support; a connecting rod and a crank arm are arranged on the two sides of the hinged position of the support and the rocker arm respectively, a linear power device is hinged between the connecting rod and the support, the end of the crank arm is in shaft connection with a pressing roller, and a limiting adjusting mechanism is further installed on the crank arm. The action of the rocker arm is controlled through the linear power device, downward pressing and upward lifting of the pressing roller can be controlled, and therefore the large pipe diameter at the tool retracting position of the jump gear section is automatically reduced, the uniformity of the pipe diameter of the copper pipe is guaranteed, time and labor are saved, the machining efficiency is high, and the product quality is convenient to control. The limiting adjusting mechanism can prevent the copper pipe from sinking due to excessive pressing, and the product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of copper tube rolling, in particular to a copper tube middle section rolling forming device. Background Art

[0002] During the copper tube processing, the deformation degree of the copper tube is reduced at the step-out section of the copper tube due to the reduced pressure of the cutter on the copper tube, which makes the tube diameter larger. In order to deal with this problem, the existing solution is to manually use rollers to roll the step-out section of the copper tube one by one before packing to reduce the tube diameter. This solution is time-consuming and labor-intensive, greatly increasing the labor intensity of workers, and not only inefficient, but the quality of the processing is also highly dependent on the experience and skills of the processing workers, which is not easy to control product quality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a copper tube middle section roll forming device, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention discloses a copper tube middle section roll forming equipment, which adopts a technical solution, including a bracket, a mounting position on the bracket, a rocker arm hinged on the bracket, a connecting rod and a crank arm of the rocker arm on both sides of the hinge position of the bracket and the rocker arm, a linear power device is hinged between the connecting rod and the bracket, a pressure roller is connected to the end shaft of the crank arm, and a limit adjustment mechanism is also installed on the crank arm. The linear power device can control the swing of the crank arm, thereby controlling the lifting and pressing of the pressure roller, and the limit adjustment mechanism can limit the maximum pressing distance of the pressure roller, thereby preventing the copper tube from being dented due to excessive pressing.

[0005] As a preferred technical solution of the present invention, the main body of the bracket is L-shaped, and the mounting position is a horizontal mounting plate arranged on the vertical section of the main body. The mounting plate is used to fix the mounting bracket.

[0006] As a preferred technical solution of the present invention, the linear power device is one of a pneumatic cylinder, a hydraulic cylinder, and an electric cylinder.

[0007] As a preferred technical solution of the present invention, the limit adjustment mechanism is a positioning adjustment screw, a threaded hole is formed on the crank arm, and the positioning adjustment screw is engaged in the threaded hole. When the rocker arm drives the pressure roller to press down, when the pressure roller reaches a suitable downward pressure point, the bottom of the positioning adjustment screw is connected to the feeding frame, and the pressure roller cannot continue to press down.

[0008] As a preferred technical solution of the present invention, the positioning adjustment screw is also meshed with a nut, the nut and the crank arm are in sliding contact, the thread of the nut is opposite to the thread of the threaded hole, and the nut and the crank arm threaded hole cooperate to locate the position of the positioning adjustment screw.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a bracket, a rocker arm with a pressure roller is hinged on the bracket, and a linear power device is installed between the rocker arm and the rocker arm, the movement of the rocker arm can be controlled by the linear power device, thereby controlling the downward pressure and upward lifting of the pressure roller. During the copper tube transmission process, the surface of the copper tube is pressed by the pressure roller, and the large diameter of the tube at the retracting point of the jump gear section can be automatically reduced, thereby ensuring the uniformity of the copper tube diameter, saving time and labor, high processing efficiency, and facilitating the control of product quality. The positioning adjustment screw installed on the rocker arm can limit the maximum downward pressure distance of the pressure roller, prevent excessive downward pressure from causing the copper tube to sag, and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the use state of the present invention.

[0011] In the figure: 1. bracket; 2. cylinder; 3. rocker arm; 4. pressure roller; 5. positioning adjustment screw; 6. nut; 7. installation position; 8. first hinge position; 9. second hinge position; 10. connecting rod; 11. crank arm; 12. feed rack; 13. feed roller; 14. copper tube. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0013] like Figure 1 As shown, the present invention discloses a copper tube middle section roll forming device, which adopts a technical solution comprising a bracket 1, the main body of the bracket 1 is L-shaped, including a vertical section and a horizontal section located at the lower end of the vertical section, a mounting plate is horizontally arranged in the middle and upper part of the vertical section, and the mounting plate forms a mounting position 7 for connecting to a feeding rack 12. The mounting plate and the horizontal section of the bracket 1 are respectively located on both sides of the vertical section of the bracket 1.

[0014] The upper end axis of the vertical section of the bracket 1 is connected to the rocker arm 3. The two sides of the hinge point between the rocker arm 3 and the bracket 1 are the connecting rod 10 and the curved arm 11 of the rocker arm 3 respectively. The free end of the connecting rod 10 is the second hinge position 9, and the end of the horizontal section of the bracket 1 is the first hinge position 8. In order to control the angle change of the rocker arm 3, the cylinder 2 is introduced, and the two ends of the cylinder 2 are hinged to the first hinge position 8 and the second hinge position 9 respectively.

[0015] In order to reduce the diameter of the copper tube 14 , a pressure roller 4 is axially connected to the free end of the crank arm 11 .

[0016] In order to prevent the cylinder 2 from extending and driving the rocker arm 3 to drive the pressure roller 4 to excessively press down, causing the copper tube 14 to dent, a threaded hole is opened on the crank arm 11, and a positioning adjustment screw 5 is engaged in the threaded hole. In order to position the positioning adjustment screw 5, a nut 6 is engaged on the positioning adjustment screw 5. In order for the nut 6 to limit the position of the positioning adjustment screw 5, the thread direction of the nut 6 is opposite to the thread direction of the threaded hole, and the nut 6 is in sliding contact with the top surface of the crank arm 11.

[0017] The cylinder 2 is connected to the air circuit control system and the air source. In order to realize automatic control, a photoelectric sensor is installed on the feeding rack 12 to detect the position of the copper tube 14, and a PLC control system is also set up. The PLC control system is electrically connected to the air circuit control system and the photoelectric sensor. The PLC control system is also connected to the host computer to facilitate the staff to operate the system.

[0018] Working principle of the present invention: like Figure 2 As shown, bolts (not shown in the figure) can be used to connect the mounting plate of the mounting position 7 to the feed rack 12, and the position of the positioning adjustment screw 5 on the positioning adjustment screw 5 is adjusted according to the diameter of the copper tube 14, and the positioning adjustment screw 5 is screwed into the threaded hole of the crank arm 11. Since the thread direction of the nut 6 is opposite to that of the threaded hole, after the nut 6 is connected to the top surface of the crank arm 11, the positioning adjustment screw 5 can no longer be screwed, thereby achieving the effect of precise positioning.

[0019] The staff operates the upper computer to start the system and adjusts the telescopic distance of the cylinder 2 according to the diameter of the copper tube 14. When the copper tube 14 is conveyed through the feeding rack 12, the copper tube 14 rotates and moves on the feeding roller 13 under the traction of the traction device, and the rotating axis is the axis of the copper tube 14. After the PLC control system detects the copper tube 14 through the photoelectric sensor, it starts the air path control system, and the air source quantitatively delivers air to the cylinder 2. The cylinder 2 extends, the rocker arm 3 rotates clockwise, and the positioning adjustment screw 5 and the pressure roller 4 are pressed down. When the positioning adjustment screw 5 is connected to the feeding rack 12, the pressure roller 4 is tightly fitted with the outer wall of the standard diameter section of the copper tube 14. As the copper tube 14 is conveyed by rotation, when the pressure roller 4 is connected to the retreat point of the copper tube 14, the pressure roller 4 presses down the outer wall of the copper tube 14 to reduce the diameter of the copper tube 14.

[0020] When the PLC control system detects that the photoelectric sensor has lost the signal of the copper tube 14 and determines that the copper tube 14 has completely passed through the pressure roller 4, it controls the air circuit control system to shrink the cylinder 2, rotate the rocker arm 3 counterclockwise, and raise the pressure roller 4 to complete the processing of the copper tube 14.

[0021] The circuits and mechanical connections involved in the present invention are conventional means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which are common knowledge.

[0022] Components not described in detail herein are prior art.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper tube middle section roll forming device, characterized in that: The invention comprises a bracket (1), wherein a mounting position (7) is provided on the bracket (1), a rocker arm (3) is hingedly connected to the bracket (1), a connecting rod (10) and a crank arm (11) of the rocker arm (3) are respectively provided on both sides of the hinged position between the bracket (1) and the rocker arm (3), a linear power device is hingedly connected between the connecting rod (10) and the bracket (1), a pressure roller (4) is connected to the end shaft of the crank arm (11), and a limit adjustment mechanism is also provided on the crank arm (11).

2. The copper tube middle section roll forming equipment according to claim 1, characterized in that: The main body of the bracket (1) is L-shaped, and the mounting position (7) is a horizontal mounting plate arranged on a vertical section of the main body.

3. The copper tube middle section roll forming equipment according to claim 1, characterized in that: The linear power device is one of a pneumatic cylinder (2), a hydraulic cylinder, and an electric cylinder.

4. The copper tube middle section roll forming equipment according to claim 1, characterized in that: The limit adjustment mechanism is a positioning adjustment screw (5), a threaded hole is formed on the crank arm (11), and the positioning adjustment screw (5) is engaged in the threaded hole.

5. The copper tube middle section roll forming equipment according to claim 4, characterized in that: The positioning adjustment screw rod (5) is also meshed with a nut (6), and the nut (6) and the crank arm (11) are in sliding contact; the thread of the nut (6) is in the opposite direction to the thread of the threaded hole.

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