Angle-adjustable pipe bending die for square pipe

Abstract

The utility model relates to an angle-adjustable pipe bending die for a square pipe, which belongs to the technical field of pipe bending dies and comprises a mounting frame, a fixing frame fixedly mounted on the lower surface of the mounting frame, a telescopic cylinder mounted on the mounting frame, a mounting seat fixedly mounted at the output end of the telescopic cylinder, and a male die arranged on the mounting seat. A first female die and a second female die are rotationally installed on the installation frame, semicircular plates are arranged on the installation frame and located on the two sides of the first female die, the first female die and the second female die are in sliding connection with the semicircular plates, an electric telescopic rod is hinged to the fixing frame, and the output end of the electric telescopic rod is connected with the first female die and the second female die. Through the electric telescopic rod, the sliding rail, the circular plate, the scale marks, the kidney-shaped hole, the threaded rod and the compression nut, and convenient adjustment of the angle of the female die, the adaptability of equipment to different machining requirements is greatly improved, the position of the female die can be firmly fixed, and it is guaranteed that the female die is always kept stable in the whole machining process.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending mold technology, and in particular to a pipe bending mold with adjustable angle for square tubes. Background Technology

[0002] In modern industrial production systems, square tubing plays an indispensable role in many key fields such as construction, machinery manufacturing, and the automotive industry due to its excellent mechanical properties, stable structural characteristics, and diverse specifications and dimensions. In the construction field, square tubing is often used to construct building frames, door and window frames, etc., providing a stable supporting structure for buildings. In machinery manufacturing, it is widely used in the manufacture of various mechanical parts, such as equipment brackets and transmission components. In the automotive industry, square tubing is involved in the production of key components such as car frames and bumpers, directly affecting the safety performance and overall quality of automobiles.

[0003] Due to the diverse range of practical applications, square tubes often need to be bent into specific angles to meet different design requirements. For example, in architectural decoration, square tubes need to be bent into beautiful curves for aesthetic design; in mechanical manufacturing, square tubes often need to be bent into specific angles to achieve precise connections and transmissions between components. However, the concave die angles of traditional tube bending dies are mostly fixed, meaning that one set of dies can only process tubes at one angle. When production tasks involve multiple bending angle requirements, it is necessary to frequently change dies, a time-consuming and labor-intensive process that severely restricts the improvement of production efficiency and increases production costs.

[0004] Taking the "Adjustable Angle Bending Die for Round and Square Tubes" (CN219745943U) as an example, this die consists of a punch, two dies, a connecting assembly, and a guide mechanism that elastically supports the dies. The bottom of the punch and the top of the dies have mutually matching positioning grooves. The two dies are symmetrically distributed along the first vertical center plane of the punch and are both rotatably connected to the connecting assembly. This solution achieves linkage between the two dies through the connecting assembly, and adjusts the forming angle of the tube by the punch's descent distance; that is, a larger punch descent distance results in a smaller bending angle, and a smaller descent distance results in a larger bending angle. The guide assembly allows the two dies to reset, enabling repeated pressing of the tube. To a certain extent, this achieves the function of one die replacing multiple dies, saving factory equipment investment costs.

[0005] However, a deeper analysis of the actual use of this mold reveals significant drawbacks in adjusting the die angle. The operation requires the repeated measurement of the die angle using various complex external measuring tools, such as angle gauges and measuring instruments. Furthermore, angle adjustment relies entirely on manual operation, demanding constant fine-tuning by experienced workers, making the entire process cumbersome and time-consuming. This method of adjustment, dependent on complex tools and extensive manual labor, significantly impacts bending efficiency and fails to meet the demands of rapid and precise production in today's industrial environment that prioritizes high-efficiency manufacturing. Utility Model Content

[0006] To overcome the technical defects of the existing technology, this utility model provides a square tube bending mold with adjustable angle, which can flexibly adjust the angle between the first die and the second die according to processing requirements, thereby improving the applicability of the bending mold.

[0007] The technical solution adopted by this utility model is as follows: It includes a mounting frame, a fixed frame is fixedly mounted on the lower surface of the mounting frame, a telescopic cylinder is mounted on the mounting frame, a mounting base is fixedly mounted on the output end of the telescopic cylinder, a punch is provided on the mounting base, a first die and a second die are rotatably mounted on the mounting frame, a semi-circular plate is provided on the mounting frame and on both sides of the first die, the first die and the second die are slidably connected to the semi-circular plate, and an electric telescopic rod is hinged to the fixed frame, the output end of the electric telescopic rod is connected to the first die and the second die.

[0008] Preferably, to facilitate disassembly of the punch, a fixing bolt is threaded onto the mounting base, the punch is connected to the mounting base via the fixing bolt, and a fixing nut is threaded onto the other end of the fixing bolt.

[0009] Preferably, in order to facilitate fixing the positions of the first die and the second die, the first die and the second die are provided with screws, the screws are slidably engaged with the semicircular plate, and the other end of the screw is threaded with a clamping nut, the clamping nut is pressed against the semicircular plate.

[0010] Preferably, in order to make the first die and the second die form a certain angle, a slide rail is installed on the lower surface of the first die and the second die, and a slider is slidably engaged inside the slide rail, and the slider is hinged to the output end of the electric telescopic rod.

[0011] Preferably, in order to allow the first die and the second die to rotate, a rotating shaft is fixedly installed on the mounting bracket, and the rotating shaft is rotatably connected to the first die and the second die.

[0012] Preferably, in order for the electric telescopic rod to be hinged to the fixed frame, the fixed frame is provided with a hinge seat, and the electric telescopic rod and the fixed frame are hinged through the hinge seat.

[0013] Preferably, in order for the threaded rod to slide and engage with the semi-circular plate, the semi-circular plate is provided with an oblong hole, and the threaded rod slides and engages with the oblong hole.

[0014] Preferably, in order to facilitate precise adjustment of the angle between the first die and the second die, the semicircular plate is provided with scale lines.

[0015] The beneficial effects of this utility model are: the electric telescopic rod, slide rail, circular plate, scale line, oblong hole, threaded rod and clamping nut can easily change the angle of the die cavity to meet different processing requirements. The angle between the first die cavity and the second die cavity can be precisely adjusted by the scale line. The screws on the first die cavity and the second die cavity slide and engage with the oblong hole on the semicircular plate. With the clamping nut, the position of the die cavity can be fixed to ensure the stability of the die cavity during processing. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the present invention from the right side view.

[0017] Figure 2 for Figure 1 Schematic diagram at point A.

[0018] Figure 3 This is a structural schematic diagram of the present invention from the left side view.

[0019] Figure 4 for Figure 3 Schematic diagram at point B.

[0020] Figure 5 This is a structural schematic diagram of the present invention from a downward viewing angle.

[0021] Figure 6 This is a schematic diagram of the structure of the first concave mold after the angle of the present invention has been adjusted.

[0022] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Fixing bracket; 3. Telescopic cylinder; 4. Mounting base; 5. First die; 6. Second die; 7. Semicircular plate; 8. Electric telescopic rod; 9. Fixing bolt; 10. Punch; 11. Fixing nut; 12. Screw; 13. Clamping nut; 14. Rotating shaft; 15. Slide rail; 16. Hinge seat; 17. Slider; 18. Waist-shaped hole; 19. Scale line. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] like Figures 1-6 As shown, this embodiment provides a square tube bending mold with adjustable angle, including a mounting frame 1, a fixing frame 2 fixedly mounted on the lower surface of the mounting frame 1, a telescopic cylinder 3 mounted on the mounting frame 1, a mounting base 4 fixedly mounted on the output end of the telescopic cylinder 3, a punch 10 provided on the mounting base 4, the position of the punch 10 can be adjusted by telescopic cylinder 3, thereby bending the square tube to be bent, a first die 5 and a second die 6 rotatably mounted on the mounting frame 1, a semi-circular plate 7 provided on the mounting frame 1 and located on both sides of the first die 5, the first die 5 and the second die 6 are slidably connected to the semi-circular plate 7, an electric telescopic rod 8 is hinged on the fixing frame 2, the output end of the electric telescopic rod 8 is connected to the first die 5 and the second die 6, and the electric telescopic rod 8 can extend and retract.

[0025] The mounting base 4 is threaded with a fixing bolt 9. The punch 10 is connected to the mounting base 4 via the fixing bolt 9. The other end of the fixing bolt 9 is threaded with a fixing nut 11. The first die 5 and the second die 6 are provided with screws 12, which are slidably engaged with the semi-circular plate 7. The other end of the screw 12 is threaded with a clamping nut 13, which is clamped to the semi-circular plate 7. The lower surface of the first die 5 and the second die 6 is equipped with a slide rail 15. A slider 17 is slidably engaged inside the slide rail 15. The slider 17 is connected to the electric motor. The output end of the telescopic rod 8 is hinged. A rotating shaft 14 is fixedly installed on the mounting frame 1. The rotating shaft 14 is rotatably connected to the first die 5 and the second die 6. The fixed frame 2 is provided with a hinge seat 16. The electric telescopic rod 8 is hinged to the fixed frame 2 through the hinge seat 16. The semicircular plate 7 is provided with a waist-shaped hole 18. The screw 12 is slidably engaged with the waist-shaped hole 18. The semicircular plate 7 is provided with a scale line 19. The angle between the first die 5 and the second die 6 can be precisely adjusted through the scale line 19 to meet the bending angle requirements of the square tube to be bent.

[0026] In use, according to the required bending angle of the square tube to be bent, the angle between the first die 5 and the second die 6 is precisely adjusted via the scale line 19 on the semicircular plate 7. The clamping nut 13 is loosened to allow the screw 12 to slide within the oblong hole 18. Driven by the electric telescopic rod 8, the first die 5 and the second die 6 rotate around the rotating shaft 14, and the screw 12 rotates along the oblong hole 18 until the desired angle is reached. Then, the clamping nut 13 is tightened to fix the positions of the first die 5 and the second die 6. The square tube to be bent is then placed in the first die 5 and the second die 6. Between the molds 6, ensure the square tube is accurately positioned and in full contact with the die. Loosen the fixing nut 11 and remove the fixing bolt 9, which is only for easy removal of the punch 10. According to the bending angle requirements, connect the appropriate punch 10 to the mounting base 4. Start the telescopic cylinder 3. The output end of the telescopic cylinder 3 drives the mounting base 4 and the punch 10 to move downward. The punch 10 applies pressure to the square tube. With the cooperation of the first die 5 and the second die 6, the square tube is bent. After bending is completed, the telescopic cylinder 3 drives the punch 10 to rise and reset. The operator takes out the bent square tube.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A square tube bending mold with adjustable angle, comprising a mounting bracket (1), characterized in that: A fixing frame (2) is fixedly installed on the lower surface of the mounting frame (1). A telescopic cylinder (3) is installed on the mounting frame (1). A mounting seat (4) is fixedly installed on the output end of the telescopic cylinder (3). A punch (10) is provided on the mounting seat (4). A first die (5) and a second die (6) are rotatably installed on the mounting frame (1). A semi-circular plate (7) is provided on the mounting frame (1) and on both sides of the first die (5). The first die (5) and the second die (6) are slidably connected to the semi-circular plate (7). An electric telescopic rod (8) is hinged on the fixing frame (2). The output end of the electric telescopic rod (8) is connected to the first die (5) and the second die (6).

2. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: The mounting base (4) is threaded with a fixing bolt (9), and the punch (10) is connected to the mounting base (4) through the fixing bolt (9). The other end of the fixing bolt (9) is threaded with a fixing nut (11).

3. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: The first die (5) and the second die (6) are provided with screws (12), the screws (12) are slidably engaged with the semicircular plate (7), and the other end of the screws (12) is threaded with a clamping nut (13), the clamping nut (13) is pressed against the semicircular plate (7).

4. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: A rotating shaft (14) is fixedly installed on the mounting bracket (1), and the rotating shaft (14) is rotatably connected to the first die (5) and the second die (6).

5. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: The first die (5) and the second die (6) are equipped with slide rails (15) on their lower surfaces. A slider (17) is slidably engaged inside the slide rail (15). The slider (17) is hinged to the output end of the electric telescopic rod (8).

6. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: The fixed frame (2) is provided with a hinge seat (16), and the electric telescopic rod (8) is hinged to the fixed frame (2) through the hinge seat (16).

7. The adjustable-angle bending mold for square tubes according to claim 3, characterized in that: The semicircular plate (7) is provided with a waist-shaped hole (18), and the screw (12) is slidably engaged with the waist-shaped hole (18).

8. The adjustable-angle bending mold for square tubes according to claim 1, characterized in that: The semicircular plate (7) is provided with scale lines (19).

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