Bar forging and pressing die

Abstract

The utility model discloses a bar forging and pressing die which comprises a base and a portal frame fixedly arranged on the upper end face of the base, a forging and pressing assembly is arranged in the portal frame, a bar traction assembly is fixedly arranged on the upper end face of the base and located at the discharging end of the forging and pressing assembly, and the bar traction assembly comprises a U-shaped frame fixedly arranged on the upper end face of the base. A driving roller is rotationally arranged in the U-shaped frame and close to the bottom end, a motor used for driving the driving roller to rotate is fixedly arranged outside the U-shaped frame, a pressing roller assembly capable of moving up and down is arranged in the U-shaped frame and close to the top end, and a water circulation cooling mechanism is arranged in the pressing roller assembly. Compared with the prior art, the die has the advantages that the bar traction assembly is arranged at the discharging end of the die, it is guaranteed that bars can be stably and continuously discharged from the die, under the condition that the bars are fired before being forged and pressed and are soft in texture, the water circulation cooling mechanism cools the traction part, and the quality of the bars is guaranteed. And the problem that the bar is easy to deform due to soft texture in the traction process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel forging devices, in particular to a bar forging die. Background Art

[0002] Bars are a type of metal material widely used in industry. Their cross-section is often circular, and they come in a variety of materials, including carbon steel, alloy steel, and stainless steel. In construction, bars (such as rebar) are key materials for reinforcing concrete structures. In many other industries, including machinery manufacturing, bars are also commonly used to manufacture various components, such as shafts. Their long length and regular shape make them a fundamental material for the manufacture of many structures and components.

[0003] Before forging, bars need to be sintered to a red-hot temperature, which softens the material. Traditional bar forging equipment has significant shortcomings in the discharge and traction process. In traditional equipment, the traction mechanism after forging is prone to deformation when the bar is clamped in the traction section, due to the softness of the red-hot bar. Furthermore, this deformation can cause misalignment between the traction mechanism and the bar, leading to traction problems. Utility Model Content

[0004] (1) Technical issues

[0005] The utility model provides a bar forging die, aiming to solve the problem that the traditional forging die easily causes deformation of the bar when pulling the bar.

[0006] (2) Technical content

[0007] In order to solve the above technical problems, the technical solution of the utility model is: a bar forging die, comprising a base and a gantry fixed on the upper end face of the base, a forging assembly is provided inside the gantry, a bar pulling assembly is fixed on the upper end face of the base and located at the discharge end of the forging assembly, the bar pulling assembly comprises a U-shaped frame fixed on the upper end face of the base, an active roller is provided for rotation near the bottom end of the U-shaped frame, a motor for driving the active roller to rotate is fixed on the outside of the U-shaped frame, a clamping roller assembly that can move up and down is provided near the top end of the U-shaped frame, and a water circulation cooling mechanism is provided inside the clamping roller assembly.

[0008] Furthermore, the pressure roller assembly includes an adjusting bolt threadedly connected to the upper end of the U-shaped frame, a mounting frame is rotatably provided at the lower end of the adjusting bolt, a pressure roller is rotatably provided inside the mounting frame, and a guide rod is fixed at the upper end of the mounting frame, which passes through the U-shaped frame and is slidably connected to the U-shaped frame.

[0009] Furthermore, the water circulation cooling mechanism includes a cavity provided inside the pressure roller, and a water inlet pipe and a water return pipe connected to the cavity are respectively provided at the rotating shafts at both ends of the pressure roller through rotary joints. The water inlet pipe is connected to an external water supply device, and the water return pipe is connected to an external water tank.

[0010] Furthermore, both left and right side walls of the U-shaped frame are provided with slots for the rotary joint to pass through and move up and down.

[0011] Furthermore, the forging assembly includes an electric push rod fixed to the upper end of the gantry, a dynamic die fixed to the lower end of the electric push rod, and a static die fixed to the upper end surface of the base, and the lower end surface of the dynamic die and the upper end surface of the static die are both provided with die grooves for forging bars.

[0012] (3) Technical effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] A bar pulling assembly is provided on the upper end face of the base of the die and at the discharge end of the forging assembly. Through the cooperation of the U-frame, the active roller and the motor, the bar after forging can be actively pulled, ensuring that the bar can be discharged from the die stably and continuously, thereby improving production efficiency. The design of the clamping roller assembly enables the pulling assembly to adapt to bars of different sizes. The structure of the adjusting bolt, the mounting frame, the clamping roller and the guide rod can be conveniently adjusted by adjusting the distance between the clamping roller and the active roller to accommodate bars of different diameters. Moreover, in the case where the bar is fired before forging and the texture becomes soft, the water circulation cooling mechanism inside the clamping roller assembly plays an important role. The pulling part is cooled before pulling so that the texture of the bar is hardened to a certain extent, effectively reducing the problem of the bar being easily deformed due to its soft texture during the pulling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structure diagram of a bar forging die of the utility model. Figure 1 .

[0016] Figure 2 This is a three-dimensional structure diagram of a bar forging die of the utility model. Figure 2 .

[0017] Figure 3 It is a schematic diagram of the main structure of a bar forging die of the utility model.

[0018] Figure 4 It is a left-side structural schematic diagram of a bar forging die of the utility model.

[0019] Figure 5 It is a right side structural schematic diagram of a bar forging die of the present utility model.

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of a bar forging die of the utility model.

[0021] As shown in the figure: 1. Base; 2. Gantry; 3. U-shaped frame; 4. Active roller; 5. Motor; 6. Adjusting bolt; 7. Mounting frame; 8. Pressing roller; 9. Water inlet pipe; 10. Water return pipe; 11. Rotary joint; 12. Slot hole; 13. Electric push rod; 14. Moving mold; 15. Static mold; 16. Mold groove; 17. Guide rod. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation. Therefore, they cannot be understood as limitations on the present invention.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "provided with," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Combined with attachment Figure 1 To the attached Figure 6 A bar forging die comprises a base 1 and a gantry 2 fixed to the upper end surface of the base 1, a forging assembly is provided inside the gantry 2, a bar pulling assembly is fixed to the upper end surface of the base 1 and located at the discharge end of the forging assembly, the bar pulling assembly comprises a U-shaped frame 3 fixed to the upper end surface of the base 1, an active roller 4 is provided for rotation near the bottom end of the U-shaped frame 3, a motor 5 for driving the active roller 4 to rotate is fixed to the outside of the U-shaped frame 3, a pressing roller assembly that can move up and down is provided near the top of the U-shaped frame 3, and a water circulation cooling mechanism is provided inside the pressing roller assembly.

[0026] In this embodiment, as a preferred technical solution, the pressure roller assembly includes an adjusting bolt 6 threadedly connected to the upper end of the U-shaped frame 3, a mounting frame 7 is rotatably provided at the lower end of the adjusting bolt 6, a pressure roller 8 is rotatably provided inside the mounting frame 7, and a guide rod 17 is fixed at the upper end of the mounting frame 7, which passes through the U-shaped frame 3 and is slidably connected to the U-shaped frame 3.

[0027] In this embodiment, as a preferred technical solution, the water circulation cooling mechanism includes a cavity provided inside the pressure roller 8, and a water inlet pipe 9 and a water return pipe 10 connected to the cavity are respectively provided at the rotating shafts at both ends of the pressure roller 8 through a rotary joint 11. The water inlet pipe 9 is connected to an external water supply device, and the return pipe 10 is connected to an external water tank. The left and right side walls of the U-shaped frame 3 are provided with slots 12 for the rotary joint 11 to pass through and move up and down.

[0028] In this embodiment, as a preferred technical solution, the forging assembly includes an electric push rod 13 fixed to the upper end of the gantry 2, a dynamic die 14 fixed to the lower end of the electric push rod 13, and a static die 15 fixed to the upper end surface of the base 1. The lower end surface of the dynamic die 14 and the upper end surface of the static die 15 are both provided with a die groove 16 for forging bars.

[0029] The working principle of the bar forging die of the utility model is:

[0030] 1. First, select the appropriate rod according to production needs. Place the rod to be forged on the upper end surface of the base 1 and above the die groove 16 on the static die 15. Place one end of the rod between the active roller 4 and the pressure roller 8. Adjust the pressure roller assembly according to the diameter of the rod. By rotating the adjusting bolt 6, the adjusting bolt 6 drives the mounting frame 7 connected to the lower end to move up and down. The pressure roller 8 inside the mounting frame 7 moves with the mounting frame 7. The guide rod 17 at the upper end of the mounting frame 7 passes through the U-shaped frame 3 and is slidably connected to it, playing a guiding role, ensuring that the mounting frame 7 moves smoothly until the distance between the pressure roller 8 and the active roller 4 is suitable for the current diameter of the rod, and is ready for forging operation.

[0031] 2. Activate the electric push rod 13 at the upper end of the gantry 2, which pushes the movable die 14 at the lower end downward. The die groove 16 at the lower end of the movable die 14 and the die groove 16 at the upper end of the static die 15 forge the bar. The electric push rod 13 precisely controls the downward stroke of the movable die 14 to achieve the desired forging pressure, causing the bar to plastically deform within the die groove 16, resulting in a preliminarily forged bar.

[0032] 3. The bar is forged in sections. After a section of the bar is forged, the movable die 14 is raised to prepare for the bar pulling operation. The motor 5 outside the U-shaped frame 3 is started, and the motor 5 drives the active roller 4 to start rotating. The active roller 4 drives the bar to move in the discharge direction, realizing the bar pulling and discharge operation. After one end is reached, the pulling is stopped, and the movable die 14 is started again to move down to forge the next section of the bar.

[0033] 4. While traction is in progress, the water circulation cooling mechanism is activated. The external water supply device supplies water to the cavity inside the pinch roller 8 through the water inlet pipe 9. After the water flows through the cavity and removes heat, it flows back to the external water storage tank through the return pipe 10 to cool the pinch roller 8. The pinch roller 8 cools the clamped bar, increasing the hardness of the bar and reducing deformation caused by the soft material of the bar when clamping it.

[0034] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A bar forging die, comprising a base (1) and a gantry (2) fixed to the upper end surface of the base (1), wherein a forging assembly is provided inside the gantry (2), characterized in that: A rod pulling assembly is fixedly provided on the upper end surface of the base (1) and at the discharge end of the forging assembly. The rod pulling assembly comprises a U-shaped frame (3) fixedly provided on the upper end surface of the base (1), an active roller (4) is provided in the interior of the U-shaped frame (3) near the bottom end for rotation, a motor (5) for driving the active roller (4) to rotate is fixedly provided on the exterior of the U-shaped frame (3), a pressing roller assembly that can move up and down is provided in the interior of the U-shaped frame (3) near the top end, and a water circulation cooling mechanism is provided in the interior of the pressing roller assembly.

2. The bar forging die according to claim 1, characterized in that: The pressure roller assembly comprises an adjusting bolt (6) threadedly connected to the upper end of the U-shaped frame (3); a mounting frame (7) is rotatably provided at the lower end of the adjusting bolt (6); a pressure roller (8) is rotatably provided inside the mounting frame (7); a guide rod (17) is fixedly provided at the upper end of the mounting frame (7); the guide rod (17) passes through the U-shaped frame (3) and is slidably connected to the U-shaped frame (3).

3. The bar forging die according to claim 2, characterized in that: The water circulation cooling mechanism comprises a cavity provided inside the pressing roller (8), and a water inlet pipe (9) and a water return pipe (10) communicating with the cavity are provided at the rotating shafts at both ends of the pressing roller (8) through rotary joints (11), the water inlet pipe (9) is connected to an external water supply device, and the water return pipe (10) is connected to an external water storage tank.

4. The bar forging die according to claim 3, characterized in that: The left and right side walls of the U-shaped frame (3) are both provided with slot holes (12) for the rotary joint (11) to pass through and move up and down.

5. The bar forging die according to claim 1, characterized in that: The forging assembly comprises an electric push rod (13) fixedly arranged at the upper end of the gantry (2), a movable die (14) fixedly arranged at the lower end of the electric push rod (13), and a static die (15) fixedly arranged at the upper end surface of the base (1), and a die groove (16) for forging a bar is provided on the lower end surface of the movable die (14) and the upper end surface of the static die (15).

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