Elliptical air pipe flattening device

Abstract

The utility model discloses an elliptic air duct flattening device which comprises a bottom plate and a top plate, a pressing plate is arranged between the bottom plate and the top plate, a threaded rod is arranged in the center of the top of the pressing plate, sliding cavities are formed in the centers, close to the two sides, of the bottom plate and the top plate, and sliding rods are transversely installed in the sliding cavities. The surfaces of the sliding rods are sleeved with sliding blocks, a blocking rod is connected between the upper sliding block and the lower sliding block, and springs are arranged on the two sides of the sliding blocks on the surfaces of the sliding rods. According to the flattening device for the oval air pipe, the blocking rods at the two ends are pushed by the springs to clamp the air pipe, the air pipe is prevented from moving during flattening, and the situation that the left side and the right side deform inconsistently to cause asymmetry of the air pipe is avoided by ensuring that the two sides are stressed consistently.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to an elliptical air duct flattening device. Background Art

[0002] The air duct is a pipe system used for air delivery and distribution. The air duct is soundproof and mostly circular or rectangular. Sometimes there will be an elliptical air duct, which is made by flattening the circular air duct. No matter what kind of pipe product, a corresponding flattening device is required. For example, the prior art: CN215763962U, a polyethylene pipe flattening blocking device, includes a loading frame, a screw, a stop nut, a rotating handle, an upper pressure rod, a lower pressure rod, an upper fixing plate, and a side fixing plate. The screw is connected to the upper pressure rod screw hole through the upper screw hole of the loading frame, and the side fixing plate is connected to the upper pressure rod and the lower pressure rod through bolts. The side fixing plate slides up and down along the side groove of the loading frame.

[0003] There are other existing technologies:

[0004] CN212826796U, a pipe flattening and bending machine;

[0005] CN214773955U, a pipeline baking and flattening device.

[0006] The flattening device mentioned in the above-mentioned prior art only applies pressure to the pipe from the top to deform it. When the forces on the left and right sides change, the pipe deformation is prone to become asymmetrical, making the flattened air duct unsightly and affecting subsequent use. Utility Model Content

[0007] The purpose of the utility model is to provide an elliptical air duct flattening device to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elliptical air duct flattening device, comprising a base plate, characterized in that: the base plate is fixedly connected with columns all around, a top plate is arranged on the top of the columns, a pressure plate is arranged between the base plate and the top plate, a threaded rod is arranged at the center position of the top of the pressure plate, sliding cavities are opened near the two sides of the center of the base plate and the top plate, a sliding rod is horizontally installed inside the sliding cavity, a sliding block is sleeved on the surface of the sliding rod, a gear rod is connected between the upper and lower sliding blocks, springs are arranged on both sides of the sliding block on the surface of the sliding rod, and an air duct is arranged between the pressure plate and the base plate.

[0009] Preferably, a circular boss is provided at the bottom of the threaded rod.

[0010] Preferably, a side panel is provided between the upright posts on the left and right sides.

[0011] Preferably, a handle is laterally inserted into the top of the threaded rod.

[0012] Preferably, the thickness of the sliding block is smaller than the thickness of the bottom plate and the top plate.

[0013] Preferably, the pressing plate and the bottom plate should be made of metal material with relatively high hardness.

[0014] Preferably, an anti-collision pad is provided between the pressure plate and the top plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The elliptical duct flattening device inserts the duct between the pressing plate and the bottom plate, rotates the threaded rod to press the pressing plate downward, and the duct is deformed by the pressure of the pressing plate, and the duct becomes elliptical. The threaded rod is rotated in the opposite direction to raise the pressing plate, and the position of the duct is adjusted to press the entire section of the duct to complete the production of the elliptical duct.

[0017] 2. The levers at both ends of the elliptical duct flattening device clamp the duct through springs to prevent the duct from moving when flattened. By ensuring that the forces on both sides are consistent, the left and right sides are prevented from deforming differently, causing the duct to be asymmetrical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a top view of the structure of the utility model;

[0020] Figure 3 for Figure 2 The sectional view of the section line at A is shown;

[0021] Figure 4 for Figure 2 The sectional view of the section line at point B is shown;

[0022] Figure 5 It is a schematic diagram of the gear lever and the slider of the utility model structure.

[0023] In the figure: 1, bottom plate; 2, top plate; 3, pressure plate; 4, threaded rod; 5, gear lever; 6, slider; 7, sliding cavity; 8, slide rod; 9, spring; 10, side plate; 11, air duct. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: See Figure 1 The utility model provides a technical solution: an elliptical air duct flattening device.

[0026] Among them, the bottom plate 1 is fixedly connected with columns all around, a top plate 2 is arranged on the top of the columns, a pressure plate 3 is arranged between the bottom plate 1 and the top plate 2, a threaded rod 4 is arranged at the center position of the top of the pressure plate 3, a sliding cavity 7 is opened near the two sides of the center of the bottom plate 1 and the top plate 2, a sliding rod 8 is horizontally installed inside the sliding cavity 7, a sliding block 6 is sleeved on the surface of the sliding rod 8, a gear rod 5 is connected between the upper and lower sliding blocks 6, springs 9 are arranged on both sides of the sliding block 6 on the surface of the sliding rod 8, and an air duct 11 is arranged between the pressure plate 3 and the bottom plate 1.

[0027] In this embodiment, the threaded rod 4 passes through the threaded hole in the center of the top plate 2, and the bottom pressure plate 3 is driven to move upward or downward by rotating the threaded rod 4, so that the air duct 11 is inserted between the pressure plate 3 and the bottom plate 1, and the threaded rod 4 is rotated to press the pressure plate 3 downward, and the pressure of the pressure plate 3 is matched with the bottom plate 1 to make the top and bottom of the air duct 11 concave inward, and the air duct 11 becomes elliptical, thereby being flattened, and the two sides of the air duct 11 are clamped by four gear rods 5, and the sliders 6 at both ends of the gear rods 5 are set in the sliding cavity 7, and the slide rod 8 of the slider 7 passes through the center hole of the slider 6, so as to control the gear rod 5 to move between the bottom plate 1 and the top plate 2, and the pressure plate 3 is arranged between the two stop bars 5, and a spring 9 is arranged at the position of the slide block 6 facing the column and is sleeved on the slide bar 8. When the air duct 11 is deformed by the pressure block 3 downward, the force extends to both sides to push the stop bar 5 to move outward to compress the spring 9. When one side of the air duct 11 is deformed, the force on the two sides of the stop bar 5 will be different. The spring 9 on the side with greater force will push the stop bar 5 back to push the deformation force back to the air duct 11 to offset it, so as to ensure that the forces on both sides of the air duct 11 are the same during the flattening process, avoid the air duct 11 from moving or deforming on one side, and reduce the number of defective products when the air duct 11 is flattened.

[0028] Wherein, a circular boss is arranged at the bottom of the threaded rod 4 .

[0029] In this embodiment, the circular boss is embedded in the pressure plate 3, and its diameter is larger than the diameter of the threaded rod 4 passing through the top hole of the pressure plate 3. Therefore, the pressure plate 3 is suspended below the threaded rod 4 through the circular boss, and moves along with the threaded rod 4 when it moves up and down, and the pressure plate 3 does not rotate when the threaded rod 4 rotates.

[0030] A side plate 10 is arranged between the upright posts on the left and right sides.

[0031] In this embodiment, extension blocks of the pressure plate 3 are provided on the outer sides of the two side panels 10. The extension blocks are installed on both sides of the pressure plate 3 by screws, and cooperate with the pressure plate 3 to clamp the side panels 10, move up and down with the pressure plate 3, and prevent the pressure plate 3 from tilting left and right.

[0032] Among them, a handle is laterally inserted into the top of the threaded rod 4.

[0033] In this embodiment, the handle facilitates the operator to rotate the threaded rod 4.

[0034] The thickness of the slider 6 is smaller than the thickness of the bottom plate 1 and the top plate 2 .

[0035] In this embodiment, the top and bottom of the slider 6 cannot exceed the bottom plate 1 and the top plate 2, so as to ensure that the slider 6 is always inside the bottom plate 1 and the top plate 2 to avoid friction with other components.

[0036] The pressing plate 3 and the bottom plate 1 need to be made of metal material with relatively high hardness.

[0037] In this embodiment, the pressing plate 3 and the bottom plate 1 are in direct contact with the air duct 11, and need to be made of metal with a harderness greater than that of the air duct 11 to avoid damage caused by indentations during the flattening operation.

[0038] Wherein, an anti-collision pad is arranged between the pressing plate 3 and the top plate 2 .

[0039] In this embodiment, the anti-collision pad is used to prevent the pressure plate 3 from rising too high and the top plate 2 from being damaged by reflected collision.

[0040] Working principle: insert the air duct 11 between the pressure plate 3 and the bottom plate 1, and the blocking rods 5 on both sides clamp the air duct 11. As the operator turns the threaded rod 4 to press down the pressure plate 3, the pressure applied by the pressure plate 3 cooperates with the bottom plate 1 to make the top and bottom of the air duct 11 concave inward, and the air duct 11 becomes elliptical. The blocking rods 5 at both ends push and clamp the air duct 11 through the springs 9 to prevent the air duct 11 from moving when it is flattened. By ensuring that the forces on both sides are consistent, the deformation of the left and right sides is prevented from being different, causing the air duct to be asymmetric.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the 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. An elliptical air duct flattening device, comprising a bottom plate (1), characterized in that: The bottom plate (1) is fixedly connected with columns on all sides, a top plate (2) is arranged on the top of the columns, a pressure plate (3) is arranged between the bottom plate (1) and the top plate (2), a threaded rod (4) is arranged at the center position of the top of the pressure plate (3), sliding cavities (7) are opened near the centers of the bottom plate (1) and the top plate (2) on both sides, a sliding rod (8) is transversely installed inside the sliding cavity (7), a sliding block (6) is sleeved on the surface of the sliding rod (8), a gear rod (5) is connected between the upper and lower sliding blocks (6), springs (9) are arranged on both sides of the sliding block (6) on the surface of the sliding rod (8), and an air duct (11) is arranged between the pressure plate (3) and the bottom plate (1).

2. The elliptical air duct flattening device according to claim 1, characterized in that: A circular boss is provided at the bottom of the threaded rod (4).

3. The elliptical air duct flattening device according to claim 1, characterized in that: A side plate (10) is arranged between the upright posts on the left and right sides.

4. The elliptical air duct flattening device according to claim 1, characterized in that: A handle is laterally inserted into the top of the threaded rod (4).

5. The elliptical air duct flattening device according to claim 1, characterized in that: The thickness of the sliding block (6) is smaller than the thickness of the bottom plate (1) and the top plate (2).

6. The elliptical air duct flattening device according to claim 1, characterized in that: The pressing plate (3) and the bottom plate (1) need to be made of a metal material with relatively high hardness.

7. The elliptical air duct flattening device according to claim 1, characterized in that: An anti-collision pad is provided between the pressure plate (3) and the top plate (2).

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