Spiral fan blade bending device

Abstract

The utility model relates to the technical field of spiral fan blade manufacturing, in particular to a spiral fan blade bending device which comprises an upper pressing seat and a lower pressing seat, an upper pressing head is arranged on the upper pressing seat, and a lower pressing head is arranged on the lower pressing seat. The lower end face of the upper pressing head is matched with the upper end face of the lower pressing head, and the contact face is consistent with the spiral blade in radian. The upper pressing head and the lower pressing head each comprise a bottom plate, a pressing head plate and a baffle, the bottom plates are fixedly connected with the upper pressing seat and the lower pressing seat, the pressing head plates are detachably arranged on the bottom plates, and the baffles are fixedly arranged on the bottom plates and used for clamping the pressing head plates. The spiral fan blade pressing machine is exquisite in structure, small in occupied area and capable of pressing spiral fan blades of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of spiral fan blade preparation, in particular to a spiral fan blade bending device. Background Art

[0002] A screw unloader is a bulk material unloading mechanical device that can efficiently unload a large amount of bulk goods and is widely used in ports, docks, etc. The screw unloader mainly consists of a material taking device, a horizontal screw conveyor, a vertical screw conveyor and other structures. Among them, the spiral fan blade, as the core component of the screw conveyor, plays a crucial role in the unloading process of bulk materials. During the unloading process, it is often necessary to select spiral fan blades of different specifications according to different materials.

[0003] At present, the preparation of spiral fan blades usually adopts continuous cold rolling technology. Spiral blades are manufactured by continuously rolling strip steel, which can achieve high-speed continuous production and produce a large number of spiral blades at one time. However, the spiral blade forming machine with this structure is not suitable for small-scale production, has a large floor area, and is not easy to adjust the preparation specifications. When preparing small batches of spiral fan blades with multiple specifications, the cost is relatively high, and it cannot meet the actual production requirements.

[0004] Therefore, there is an urgent need for a spiral fan blade bending device with a small floor area and more suitable for small-scale production. Summary of the Invention

[0005] The utility model provides a spiral fan blade bending device more suitable for small-scale production, with a small floor area, which can flexibly press spiral fan blades of different specifications, to solve the problems of the existing spiral blade forming machine having a large floor area and the spiral fan blade specifications being difficult to adjust.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] A spiral fan blade bending device includes an upper pressing seat and a lower pressing seat. An upper pressing head is arranged on the upper pressing seat, and a lower pressing head is arranged on the lower pressing seat. The lower end surface of the upper pressing head and the upper end surface of the lower pressing head are mutually fitted, and the contact surface is consistent with the radian of the spiral blade. The annular steel plate to be pressed is placed on the upper end surface of the lower pressing head, and the upper pressing seat descends. The upper pressing head and the lower pressing head cooperate to press the annular steel plate into a radian.

[0008] Both the upper and lower pressing heads include a bottom plate, a pressing head plate and a baffle. The bottom plate is fixedly connected to the upper and lower pressing seats. The pressing head plate is detachably arranged on the bottom plate, and the baffle is fixedly arranged on the bottom plate and used for clamping the pressing head plate. By replacing the pressing head plate, spiral fan blades of different specifications can be pressed.

[0009] Further, the bottom plate is in a sector-annular shape, and there are multiple pressure head plates which are radially arranged on the bottom plate. The pressure head plates are used for pressing the spiral fan blades.

[0010] Further, the baffle includes a first baffle, a second baffle, an inner baffle and an outer baffle; there are two first baffles which are respectively arranged on the bottom plate outside the pressure head plates at both ends, and one second baffle is arranged between every two pressure head plates. The inner baffle is arranged at the inner end of the pressure head plate along the inner arc direction of the bottom plate, and an outer baffle corresponds to the outer end of each pressure head plate. The first baffle, the second baffle, the inner baffle and the outer baffle jointly limit the positions of the upper and lower pressure heads.

[0011] Further, threaded holes are arranged on both the first baffle and the outer baffle, and fastening bolts are arranged in the threaded holes. The free ends of the fastening bolts abut against the surface of the pressure head plate. The fastening bolts are used for fixing the pressure head plate.

[0012] Further, the height of the inner baffle on the lower pressure head is greater than the height of the pressure head plate, and the height of the inner baffle on the upper pressure head is less than the height of the pressure head plate; the height of the pressure head plate is greater than the heights of the first baffle and the second baffle. When pressing the annular steel plate, the inner baffle plays a role in limiting the annular steel plate.

[0013] Further, the sector-annular angle of the bottom plate is 45°, and a total of three pressure head plates are arranged on the bottom plate. Rotate the annular steel plate, and through multi-stage pressing, the annular steel plate is pressed into the required spiral blade. Compared with the existing spiral blade pressing device, the equipment has a small volume.

[0014] Further, the pressure head plates at both ends are trapezoidal, the pressure head plate in the middle is rectangular, and the orientations of the two trapezoidal pressure head plates are opposite.

[0015] Further, the pressure head plates of the upper and lower pressure heads are correspondingly assembled into a rectangle. This makes the force on the upper and lower pressure heads stable.

[0016] Further, the top end of the upper pressure seat is connected to a hydraulic press, and the lower pressure seat is arranged on the ground. The hydraulic press controls the upper pressure seat to move up and down reciprocally.

[0017] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0018] In the present utility model, upper and lower pressure heads are respectively arranged on the upper and lower pressure seats, and the pressure head plates in the upper and lower pressure heads are designed to be detachable. By replacing the pressure head plates of different specifications, spiral fan blades of different specifications can be pressed, which greatly improves the use efficiency of the equipment.

[0019] The bottom plate of the pressure head of the present utility model is in a fan-shaped ring shape, and the spiral blade is pressed by a segmented pressing method. Compared with the existing spiral fan blade pressing device, the present utility model has a clever design, occupies a small space, and can be operated by one person, greatly saving labor costs and equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the upper pressure seat of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the lower pressure seat of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the first baffle and the second baffle of the present utility model;

[0024] In the drawings, the reference numerals are: 1 is the upper pressure seat, 2 is the lower pressure seat, 30 is the bottom plate, 31 is the first baffle, 32 is the second baffle, 33 is the inner baffle, 34 is the outer baffle, 4 is the pressure head plate, and 5 is the fastening bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0026] As Figures 1 to 4 shown, this embodiment provides a spiral fan blade bending device, which includes an upper pressure seat 1 and a lower pressure seat 2. The top end of the upper pressure seat 1 is connected to a hydraulic press, and the lower pressure seat 2 is arranged on the ground. The hydraulic press controls the upper pressure seat 1 to move up and down reciprocally. The upper pressure seat 1 and the lower pressure seat 2 respectively play a fixing role for the upper pressure head and the lower pressure head.

[0027] An upper pressure head is arranged on the upper pressure seat 1, and a lower pressure head is arranged on the lower pressure seat 2. The lower end surface of the upper pressure head and the upper end surface of the lower pressure head are mutually fitted, and the contact surface is consistent with the radian of the spiral blade; the annular steel plate to be pressed is placed on the upper end surface of the lower pressure head, and the upper pressure seat drops, and the upper pressure head and the lower pressure head cooperate to press the annular steel plate into a radian.

[0028] Both the upper and lower pressure heads include a bottom plate 30, a pressure head plate 4 and a baffle. The bottom plate 30 is fixedly connected to the upper and lower pressure seats. The pressure head plate 4 is detachably arranged on the bottom plate 30, and the pressure head plate 4 is in direct contact with the spiral fan blade. By replacing the pressure head plate 4, spiral fan blades of different specifications can be pressed. The baffle is fixedly arranged on the bottom plate 30 and is used to clamp the pressure head plate 4. The baffle includes a first baffle 31, a second baffle 32, an inner baffle 33 and an outer baffle 34.

[0029] AsFigures 2 to 3 As shown, the bottom plate 30 is in a sector-annular shape, and there are multiple pressing head plates 4. The multiple pressing head plates 4 are arranged radially on the bottom plate 30. In this embodiment, the sector angle of the bottom plate 30 is 45°, and a total of three pressing head plates 4 are provided on the bottom plate 30. The pressing head plates 4 at both ends are trapezoidal, the pressing head plate 4 in the middle is rectangular, and the orientations of the two trapezoidal pressing head plates 4 are opposite. Place the annular steel plate on the lower pressing head, press down the upper pressing head to stamp the annular steel plate, stamp out an arc on a part of the annular steel plate, rotate the annular steel plate, and continue stamping until the entire annular steel plate is pressed into a single-piece spiral fan blade.

[0030] To fix the pressing head plate 4, there are two first baffles 31 which are respectively arranged on the bottom plate 30 outside the pressing head plates 4 at both ends. The first baffles 31 are trapezoidal, and the direction of the first baffle 31 is the same as the direction of the adjacent pressing head plate 4 inside it. One second baffle 32 is arranged between every two pressing head plates 4. The second baffle 32 is in a sector-annular shape, and the second baffle 32 is concentric with the bottom plate 30;

[0031] Taking the direction close to the center as the inside and the direction far from the center as the outside, the inner baffle 33 is arranged at the inner end of the pressing head plate 4 and along the inner arc direction of the bottom plate 30. The inner baffle 33 is an arc-shaped plate, and the radian of the inner baffle 33 is consistent with the inner radian of the bottom plate 30. One outer baffle 34 corresponds to the outer end of each pressing head plate 4. A total of three outer baffles 34 are provided at the outer ends of the pressing head plates 4. The outer baffles 34 are rectangular blocks.

[0032] As Figure 4 shown, to lock the pressing head plate 4, threaded holes are provided on both the first baffle 31 and the outer baffle 34. A fastening bolt 5 is arranged in the threaded hole, and the free end of the fastening bolt 5 abuts against the surface of the pressing head plate 4. Remove the fastening bolt, and the pressing head plate 4 can be taken out.

[0033] To limit the position of the annular steel plate, the height of the inner baffle 33 on the lower pressing head is greater than the height of the pressing head plate 4, and the height of the inner baffle 33 on the upper pressing head is less than the height of the pressing head plate 4, so that the edge of the annular steel plate can abut against the inner baffle 33, playing a role in limiting during pressing and preventing the annular steel plate from moving.

[0034] The pressing head plates 4 on the upper and lower pressing heads are correspondingly arranged, and the pressing head plates 4 on the upper and lower pressing heads jointly form a rectangle. The height of the pressing head plate 4 is greater than the heights of the first baffle 31 and the second baffle 32, so that the pressing head plates 4 on the upper and lower pressing heads can play a role in stamping the annular steel plate.

[0035] The principle of the present utility model:

[0036] When it is necessary to press the spiral fan blade, take out a ring-shaped steel plate, install the pressure head plate 4 of the set specification on the upper pressure seat 1 and the lower pressure seat 2, tighten the fastening bolts 5 in the circumferential direction of the pressure head plate 4, fix the pressure head plate 4 between the first baffle 31 and the second baffle 32, place the ring-shaped steel plate on the upper end face of the lower pressure head, start the hydraulic press, the upper pressure seat 1 drives the upper pressure head to drop, stamp a part of the ring-shaped steel plate into a curved surface with the same curvature as the required spiral fan blade, rotate the ring-shaped steel plate, and continue stamping until the ring-shaped steel plate is pressed into a single-piece spiral fan blade. After pressing out multiple single-piece spiral fan blades, weld the multiple single-piece spiral fan blades point to point to obtain the spiral fan blade of the required length.

[0037] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent shall be included in the scope of the patent application of the present invention.

Claims

1. A spiral fan blade bending device, characterized in that, It includes an upper pressing seat (1) and a lower pressing seat (2). An upper pressing head is provided on the upper pressing seat (1), and a lower pressing head is provided on the lower pressing seat (2). The lower end surface of the upper pressing head and the upper end surface of the lower pressing head are mutually fitted, and the contact surface is consistent with the radian of the spiral blade; The upper and lower pressing heads both include a bottom plate (30), a pressing head plate (4) and a baffle. The bottom plate (30) is fixedly connected to the upper and lower pressing seats. The pressing head plate (4) is detachably arranged on the bottom plate (30), and the baffle is fixedly arranged on the bottom plate (30) and used for clamping the pressing head plate (4).

2. The spiral fan blade bending device according to claim 1, characterized in that, The bottom plate (30) is in a sector ring shape. The pressing head plates (4) are multiple, and the multiple pressing head plates (4) are radially arranged on the bottom plate (30).

3. The spiral fan blade bending device according to claim 2, wherein The baffle includes a first baffle (31), a second baffle (32), an inner baffle (33) and an outer baffle (34); there are two first baffles (31) which are respectively arranged on the bottom plate (30) outside the pressing head plates (4) at both ends. One second baffle (32) is arranged between every two pressing head plates (4). The inner baffle (33) is arranged at the inner end of the pressing head plate (4) and along the inner arc direction of the bottom plate (30). One outer baffle (34) corresponds to the outer end of each pressing head plate (4).

4. The spiral fan blade bending device according to claim 3, characterized in that, Threaded holes are provided on both the first baffle (31) and the outer baffle (34). A fastening bolt (5) is arranged in the threaded hole, and the free end of the fastening bolt (5) abuts against the surface of the pressing head plate (4).

5. The spiral fan blade bending device according to claim 3, characterized in that, The height of the inner baffle (33) on the lower pressing head is greater than the height of the pressing head plate (4), and the height of the inner baffle (33) on the upper pressing head is less than the height of the pressing head plate (4); the height of the pressing head plate (4) is greater than the heights of the first baffle (31) and the second baffle (32).

6. The spiral fan blade bending device according to claim 2, characterized in that, The sector ring angle of the bottom plate (30) is 45°, and a total of three pressing head plates (4) are arranged on the bottom plate (30).

7. The spiral fan blade bending device according to claim 6, characterized in that, The pressing head plates (4) at both ends are trapezoidal, the pressing head plate (4) in the middle is rectangular, and the orientations of the two trapezoidal pressing head plates (4) are opposite.

8. A spiral fan blade bending device according to claim 1, characterized in that, The pressing head plates (4) of the upper and lower pressing heads are correspondingly combined into a rectangle.

9. A spiral fan blade bending device according to claim 1, characterized in that, The top end of the upper pressing seat (1) is connected to a hydraulic press, and the lower pressing seat (2) is arranged on the ground.

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