A precision cold-drawing device for bondi tubes

Abstract

The utility model discloses a kind of precision cold-drawing devices of Bundy tube, including rack;Mould, located rack front end;Sliding table, bottom is slidably installed on rack by sliding mechanism;Clamping jaw, for a group, is movably installed on sliding table by clamping mechanism;Dialing plate, install in sliding table rear end;Side plate, for several, evenly install in rack front end;Stopper, install in one side of side plate;Suction magnetic block one, install in the front end of stopper;Shaft, bottom movably install in the other side of side plate;Rotary ring, install on shaft, and have the gap corresponding with stopper;Suction magnetic block two, for a group, install in the gap of rotary ring both sides;Blanking bar, obliquely install in the top of shaft;Reset rod, install in the side of shaft, and with blanking bar vertically set.The utility model has the beneficial effects that clamping jaw utilizes mechanical tension to force steel tube to pass through mould, realize precision cold-drawing, sliding table movement process, drive blanking bar deflection, realize automatic blanking.

Description

Technical Field

[0001] This utility model relates to the field of cold drawing technology, specifically a precision cold drawing device for Bondi tubes. Background Technology

[0002] Bundy tubing is a thin steel pipe with a diameter of 4.6-10.6mm. Invented by the Ford Motor Company in the 1930s, it is primarily used for fluid and vent pipes in automobiles and refrigerators. Domestic companies such as Tianjin Tianyutong and Jutong Steel Pipe manufacture it, and common types include military green and galvanized. Bundy tubing is a double-layer welded pipe, frequently used in automotive brake lines, clutch lines, and other braking systems.

[0003] Cold drawing is a key processing technology for Bundy tubes. It involves using external force to pull the steel tube from a mold to achieve smaller dimensions and higher precision. Existing cold drawing equipment often requires a round tube unloading device during the unloading process after the steel tube is drawn, which increases equipment costs and is prone to damage during operation, affecting normal use. Utility Model Content

[0004] To address the above deficiencies, this utility model provides a precision cold drawing device for Bondi tubes, thereby solving the problem of automatic unloading during cold drawing of Bondi tubes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precision cold-drawing device for Bondi tubes, comprising: frame; The mold is located at the front end of the frame; The sliding table is slidably mounted on the frame at its bottom via a sliding mechanism. The grippers, as a set, are movably mounted on the sliding table via a gripping mechanism; A toggle plate is installed at the rear end of the sliding table; Several side panels are evenly installed at the front end of the frame. The limit switch is installed on one side of the side panel; Adsorption magnetic block one is installed at the front end of the limiter; The pivot is movably mounted on the other side of the side panel at the bottom; A rotating ring is mounted on a rotating shaft and has a notch corresponding to the limit switch. Two magnetic adsorption blocks, as a set, are installed on both sides inside the notch of the rotating ring; The feed bar is installed at an angle on the top of the rotating shaft; The reset rod is installed on one side of the rotating shaft and is set perpendicular to the feed rod.

[0006] Furthermore, the sliding mechanism includes a drive device installed at the front end of the frame. A set of rotating shafts is movably installed inside the frame. The drive device is connected to one of the rotating shafts. A set of sprockets is fitted at both ends of the set of rotating shafts, and a transmission chain is fitted on the opposite set of sprockets. The bottom of the sliding table is fixed on the transmission chain. The drive device is a drive motor. The drive device can drive the set of sprockets to rotate through the set of rotating shafts, thereby driving the sliding table to move on the frame.

[0007] Furthermore, two sets of sliding wheels are installed on both sides of the sliding table. The two sets of sliding wheels are slidably installed on the upper end of the frame and can play a sliding guiding role.

[0008] Furthermore, the clamping mechanism includes a hydraulic actuator mounted on a sliding table. The telescopic end of the hydraulic actuator is connected to a push plate. The rear end of a set of grippers is hinged to the sliding table, and the push plate is hinged to the set of grippers via a set of connecting rods. The hydraulic actuator uses a hydraulic cylinder. When the telescopic end of the hydraulic actuator extends, it can drive the set of grippers to open via a set of connecting rods. Conversely, when the telescopic end of the hydraulic actuator retracts, it can drive the set of grippers to close via a set of connecting rods, which facilitates the clamping of the steel pipe.

[0009] Furthermore, each of the grippers has anti-slip textures on its inner front end to increase friction and prevent it from falling off.

[0010] Furthermore, a guide wheel is installed on the left side of the mold; the guide wheel is used to guide the steel pipe.

[0011] This utility model provides a precision cold drawing device for Bundy tubes, which has the following advantages: the grippers on the sliding table use mechanical pulling force to force the steel tube through a mold with a specific aperture, so that the internal grains of the material are elongated and refined, thereby obtaining higher dimensional accuracy and mechanical properties, thus realizing precision cold drawing; during the movement of the sliding table, it can drive the feeding rod to deflect, thereby realizing automatic feeding; and the stability of the feeding structure is increased by the built-in adsorption magnetic block. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a precision cold drawing device for a Bundy tube according to the present invention. Figure 2 This is a schematic diagram of the clamping mechanism of this utility model; Figure 3 This is a schematic diagram of the initial state of the feeding rod described in this utility model; Figure 4 This is a schematic diagram of the deflection of the feed rod described in this utility model; Figure 5 This is a schematic diagram of the rotating ring described in this utility model; Figure 6 This is a schematic diagram of the automatic steel pipe feeding system of this utility model; In the diagram: 1. Frame; 2. Mold; 3. Sliding table; 4. Gripper; 5. Actuating plate; 6. Side plate; 7. Limiter; 8. Adsorption magnet one; 9. Rotating shaft; 10. Rotating ring; 11. Notch; 12. Adsorption magnet two; 13. Feeding rod; 14. Reset rod; 15. Drive device; 16. Rotating shaft; 17. Sprocket; 18. Transmission chain; 19. Sliding wheel; 20. Hydraulic actuator; 21. Push plate; 22. Connecting rod; 23. Anti-slip texture; 24. Guide wheel. Detailed Implementation

[0013] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0014] Please see Figures 1 to 6 As shown, this application embodiment provides a precision cold drawing device for Bondi tubes, including a frame 1; a mold 2 located at the front end of the frame 1; a sliding table 3, slidably mounted on the frame 1 at its bottom via a sliding mechanism; a set of grippers 4, movably mounted on the sliding table 3 via a clamping mechanism; a toggle plate 5, mounted at the rear end of the sliding table 3; several side plates 6, evenly mounted at the front end of the frame 1; a limiter 7, mounted on one side of the side plate 6; an adsorption magnet 8, mounted at the front end of the limiter 7; a rotating shaft 9, movably mounted at its bottom on the other side of the side plate 6; a rotating ring 10, mounted on the rotating shaft 9, and having a notch 11 corresponding to the limiter 7; a set of adsorption magnets 12, mounted on both sides inside the notch 11 of the rotating ring 10; a feeding rod 13, obliquely mounted on the top of the rotating shaft 9; and a reset rod 14, mounted on one side of the rotating shaft 9 and perpendicular to the feeding rod 13.

[0015] In this embodiment, one end of the steel pipe is machined to reduce its diameter before passing through the mold 2 and being clamped by the gripper 4. The sliding mechanism can drive the sliding table 3 to move on the frame 1. The sliding table 3 moves to the rear end, using mechanical pulling force to force the steel pipe through the mold 2 with a specific aperture, causing the internal grains of the material to be elongated and refined, resulting in higher dimensional accuracy and mechanical properties, thereby achieving precision cold drawing. The initial position of the blanking rod 13 is as follows: Figure 1 As shown, when the sliding table 3 moves to the rear end, the reset rod 14 can be pushed by the actuating plate 5 at the rear end of the sliding table 3, causing the rotating shaft 9 to deflect and the unloading rod 13 to move to the bottom of the steel pipe, as shown. Figure 6As shown, the feeding rod 13 is inclined, with the front end higher and the rear end lower. After the steel pipe is drawn, the gripper 4 releases the steel pipe, and the sliding table 3 continues to move backward a certain distance. Under the action of gravity, the steel pipe is automatically dropped through the feeding rod 13. When the sliding table 3 moves forward, it can collide with the feeding rod 13 through the table body, causing the rotating shaft 9 to deflect and reset the feeding rod 13 for continuous cold drawing. The limiter 7, in conjunction with the rotating ring 10, limits the deflection angle of the rotating shaft 9. The deflection angle of the rotating shaft 9 is 90°, and the built-in adsorption magnetic block makes the adsorption magnetic block 18 and the adsorption magnetic block 12 attract each other to increase the stability of the deflection structure of the feeding rod 13.

[0016] In some embodiments, the sliding mechanism includes a drive device 15 installed at the front end of the frame 1. A set of rotating shafts 16 are movably installed inside the frame 1 via fastening bearings. The drive device 15 is connected to one of the rotating shafts 16. A set of sprockets 17 are respectively fitted at both ends of the set of rotating shafts 16, and a transmission chain 18 is fitted on the opposite set of sprockets 17. The bottom of the sliding table 3 is fixed on the set of transmission chains 18. Two sets of sliding wheels 19 are installed on both sides of the sliding table 3, and the two sets of sliding wheels 19 are slidably installed on the upper end of the frame 1.

[0017] like Figure 1 As shown, the drive device 15 uses a drive motor. The drive device 15 can drive a set of sprockets 17 to rotate through a set of rotating shafts 16, thereby driving the sliding table 3 to move on the frame 1. The two sets of sliding wheels 19 can play a sliding guiding role.

[0018] In some embodiments, the clamping mechanism includes a hydraulic actuator 20 mounted on a sliding table 3. The telescopic end of the hydraulic actuator 20 is connected to a push plate 21. A set of grippers 4 are hinged to the rear end of the sliding table 3, and the push plate 21 is hinged to the set of grippers 4 through a set of connecting rods 22. Anti-slip textures 23 are respectively provided on the inner front end of the set of grippers 4.

[0019] like Figure 2 As shown, the hydraulic actuator 20 uses a hydraulic cylinder. When the telescopic end of the hydraulic actuator 20 extends, it can drive a set of grippers 4 to open through a set of connecting rods 22. Conversely, when the telescopic end of the hydraulic actuator 20 retracts, it can drive a set of grippers 4 to close through a set of connecting rods 22, which facilitates the clamping of the steel pipe. The anti-slip texture 23 is used to increase friction and prevent it from falling off.

[0020] In some embodiments, a guide wheel 24 is installed on the left side of the mold 2, and the guide wheel 24 is used to guide the steel pipe.

[0021] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A precision cold-drawing device for Bondi tubes, characterized in that: include Rack (1); The mold (2) is located at the front end of the frame (1); The sliding table (3) is slidably mounted on the frame (1) at its bottom via a sliding mechanism; The grippers (4) are a set and are movably mounted on the sliding table (3) by the gripping mechanism; A toggle plate (5) is installed at the rear end of the sliding table (3); Side plates (6) are several in number and are evenly installed at the front end of the frame (1); Limiter (7) is installed on one side of the side plate (6); Adsorption magnetic block 1 (8) is installed at the front end of limiter (7); The pivot (9) is movably mounted on the other side of the side plate (6); A rotating ring (10) is mounted on a rotating shaft (9) and has a notch (11) corresponding to the limiter (7). Two magnetic adsorption blocks (12) are installed on both sides of the notch (11) of the rotating ring (10); The feed rod (13) is installed at an angle on the top of the rotating shaft (9); The reset rod (14) is installed on one side of the rotating shaft (9) and is set perpendicular to the unloading rod (13).

2. The precision cold drawing device for a Bundy tube according to claim 1, characterized in that, The sliding mechanism includes a drive device (15) installed at the front end of the frame (1). A set of rotating shafts (16) are movably installed inside the frame (1). The drive device (15) is connected to one of the rotating shafts (16) in a transmission connection. A set of sprockets (17) are respectively fitted at both ends of the set of rotating shafts (16), and a transmission chain (18) is fitted on the set of sprockets (17). The bottom of the sliding table (3) is fixed on the set of transmission chains (18).

3. The precision cold drawing device for a Bundy tube according to claim 2, characterized in that, Two sets of sliding wheels (19) are installed on both sides of the sliding table (3), and the two sets of sliding wheels (19) are slidably installed on the upper end of the frame (1).

4. The precision cold drawing device for a Bundy tube according to claim 1, characterized in that, The clamping mechanism includes a hydraulic actuator (20) mounted on a sliding table (3). The extension end of the hydraulic actuator (20) is connected to a push plate (21). A set of grippers (4) is hinged to the rear end of the sliding table (3), and the push plate (21) is hinged to a set of grippers (4) through a set of connecting rods (22).

5. The precision cold drawing device for a Bundy tube according to claim 4, characterized in that, A set of grippers (4) have anti-slip textures (23) on their inner front ends.

6. The precision cold drawing device for a Bundy tube according to claim 1, characterized in that, The mold (2) has a guide wheel (24) installed on its left side.

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