Ventilation pipe cutting device

Abstract

The utility model relates to a ventilation pipe cutting device which comprises a base, a plurality of limiting rollers and a cutting mechanism, and the limiting rollers and the cutting mechanism are arranged on the base. The limiting rollers are symmetrically arranged on the left side and the right side of the base in pairs, the bottoms of the limiting rollers are connected with the base in a left-right sliding mode, and the limiting rollers are used for clamping ventilation pipes; the cutting mechanism comprises a blade, a lifting assembly and a front-back moving assembly. The blade is located above the base and connected with the lifting assembly, and the lifting assembly is used for driving the blade to move up and down so as to cut the ventilation pipe; the lifting assembly is connected with the front-back moving assembly, and the front-back moving assembly is used for driving the lifting assembly to move in the axial direction of the ventilation pipe. When the ventilation pipe cutting device is used for cutting a ventilation pipe, the ventilation pipe is placed on the upper portion of the base, the position of the ventilation pipe is limited through the limiting rollers, and then cutting action is conducted through the cutting mechanism, so that the situation that the position of the ventilation pipe is changed during cutting is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation duct manufacturing, in particular to a ventilation duct cutting device. Background Art

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air conditioning projects in industrial and civil buildings. They are a kind of municipal infrastructure to allow air circulation and reduce the concentration of harmful gases. Depending on the usage scenario, the processed ventilation ducts need to be cut to meet the usage requirements. During cutting, since the ventilation duct is a hollow circle, its contact surface with the cutting platform is small. Under the pressure of the cutting knife, the ventilation duct may move left and right or forward and backward, resulting in the cut pipe size not meeting the requirements, resulting in waste of pipe materials. Utility Model Content

[0003] The utility model aims to provide a ventilation pipe cutting device to solve the technical problems raised in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A ventilation pipe cutting device, comprising: a base, and a plurality of limiting rollers and a cutting mechanism arranged on the base; the limiting rollers are symmetrically arranged on the left and right sides of the base, and the bottoms thereof are connected to the base for left and right sliding, and the limiting rollers are used for clamping the ventilation pipe;

[0006] The cutting mechanism includes a blade, a lifting assembly and a forward and backward moving assembly; the blade is located above the base and connected to the lifting assembly, and the lifting assembly is used to drive the blade to move up and down to cut the ventilation pipe; the lifting assembly is connected to the forward and backward moving assembly, and the forward and backward moving assembly is used to drive the lifting assembly to move along the axial direction of the ventilation pipe.

[0007] As a further improvement of the utility model, a slider and a connecting piece are provided at the bottom of the limiting roller, and at least two through holes are provided on the connecting piece;

[0008] The base is provided with a slide groove extending in the left and right directions and a connecting groove adapted to the through hole, the slide groove is slidably matched with the slider, and the connecting groove passes through the base; the limiting roller is connected to the base by bolts passing through the through hole and the connecting groove.

[0009] As a further improvement of the utility model, the lifting assembly includes a fixing frame, a vertically arranged screw rod and a guide rod, and a motor arranged on the upper part of the fixing frame through a motor seat;

[0010] The fixing frame is in a "冂" shape, and fixing pieces are provided at the lower parts of its two vertical parts. The upper parts of the two fixing pieces are respectively connected to the screw rod and the guide rod, and the screw rod is rotatably connected to the fixing piece. The upper part of the screw rod passes through the horizontal part of the fixing frame and is connected to the output shaft of the motor;

[0011] The blade is located in the middle of the fixing frame, and connecting blocks are provided on both its left and right sides. One of the connecting blocks is threadedly connected to the screw rod, and the other connecting block is slidably connected to the guide rod.

[0012] As a further improvement of the present invention, the front-back moving assembly includes a cylinder, a limit groove and a limit block; the cylinder is installed on the upper part of the base, and its free end is connected to the lifting assembly. The limit block is provided at the bottom of the lifting assembly, and the limit block is slidably connected to the limit groove. The limit groove is arranged on the upper part of the base and extends in the front-back direction.

[0013] As a further improvement of the present invention, a scale is also provided on the base.

[0014] As a further improvement of the present invention, a baffle is provided at the rear end of the base.

[0015] As a further improvement of the present invention, a clamping mechanism for clamping the outer wall of the ventilation pipe is provided on the front side of the upper part of the base;

[0016] The clamping mechanism includes two brackets and two clamping plates that extend in the front-back direction and have an arc-shaped cross section; the axes of the two clamping plates coincide and are used to clamp the ventilation pipe. The outer walls of the two clamping plates are respectively connected to the two brackets through connecting springs; the bottoms of the brackets are connected to the upper part of the base.

[0017] As a further improvement of the present invention, a plurality of support springs are provided on the upper part of the base, a support plate is provided on the upper part of the support springs, and the upper part of the support plate is used to support the ventilation pipe.

[0018] As a further improvement of the present invention, a plurality of legs are provided at the bottom of the base.

[0019] The beneficial effects of adopting the above technical solutions are as follows:

[0020] The present invention is provided with a limit roller and a cutting mechanism. When cutting the ventilation pipe, the ventilation pipe is placed on the upper part of the base, and its axis is parallel to the front-back direction of the base. The position of the ventilation pipe is limited by the limit roller, and then the cutting action is carried out by the cutting mechanism to avoid cutting deviation and pipe material waste caused by the change of the position of the ventilation pipe during cutting. In addition, a clamping mechanism for clamping the outer wall of the ventilation pipe is provided to further limit the ventilation pipe and effectively prevent the ventilation pipe from moving back and forth during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the utility model from another angle;

[0023] Figure 3 for Figure 1 A magnified image of point A;

[0024] Figure 4 This is a diagram of the use state of the utility model;

[0025] Explanation of marks in the figure: 1 base, 1-1 slide slot, 1-2 connecting slot, 1-3 scale, 1-4 baffle, 1-5 support spring, 1-6 support plate, 1-7 leg, 2 limit roller, 2-1 slider, 2-2 connecting plate, 2-3 through hole, 3 cutting mechanism, 3-1 blade, 3-11 connecting block, 3-21 fixed frame, 3-22 screw, 3-23 guide rod, 3-24 motor, 3-25 fixed plate, 3-31 cylinder, 3-32 limit slot, 3-33 limit block, 4 ventilation pipe, 5 clamping mechanism, 5-1 bracket, 5-2 splint, 5-3 connecting spring. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the present invention, the present invention is described clearly and completely below in conjunction with the accompanying drawings.

[0027] like Figure 1-Figure 4 A ventilation duct cutting device is shown, which includes: a base 1, and a plurality of limiting rollers 2 and a cutting mechanism 3 arranged on the base 1. When cutting the ventilation duct 4, the ventilation duct 4 is placed on the upper part of the base 1, with the axis parallel to the front-to-back direction of the base 1, and the position of the ventilation duct 4 is limited by the limiting rollers 2, and then the cutting action is performed by the cutting mechanism 3 to avoid cutting deviation and waste of pipe material caused by the change of the position of the ventilation duct 4 during cutting. In addition, a clamping mechanism 5 for clamping the outer wall of the ventilation duct 4 is provided on the upper front side of the base 1 to further limit the ventilation duct 4 and effectively avoid the ventilation duct 4 from moving forward and backward during cutting. In this embodiment, in order to facilitate operation, a plurality of legs 1-7 are provided at the bottom of the base 1 to support the base 1.

[0028] Specifically, the clamping mechanism 5 includes two brackets 5-1 and two clamping plates 5-2 extending in the front-back direction and having an arc-shaped cross section; the axes of the two clamping plates 5-2 coincide with each other, and are used to clamp the ventilation pipe 4; the outer walls of the two clamping plates 5-2 are respectively connected to the two brackets 5-1 through connecting springs 5-3; the bottom of the bracket 5-1 is connected to the upper part of the base 1. The bracket 5-1 and the bottom can be welded or connected by bolts, and the inner wall of the clamping plate 5-2 has a large friction force to clamp the ventilation pipe 4. At the same time, the two clamping plates 5-2 are separated and connected to the bracket 5-1 through the connecting spring 5-3, so the two clamping plates 5-2 can clamp the ventilation pipe 4 with a diameter larger than that of the clamping plates 5-2, so as to adapt to the cutting work of ventilation pipes 4 with different diameters. In addition, the clamping plate 5-2 also has a certain guiding function to preliminarily locate the position of the ventilation pipe 4. Since there is a certain height difference between the splint 5-2 and the base 1, in order to prevent the ventilation pipe 4 from tilting when placed on the base 1, a plurality of support springs 1-5 are provided on the upper part of the base 1, and a support plate 1-6 is provided on the upper part of the support springs 1-5. The upper part of the support plate 1-6 is used to support the ventilation pipe 4.

[0029] The limiting rollers 2 are symmetrically arranged on the left and right sides of the base 1, and the bottoms thereof are connected to the base 1 for sliding left and right. The limiting rollers 2 are used to clamp the ventilation pipe 4. Figure 1 and Figure 3 As shown, the bottom of the limiting roller 2 is provided with a slider 2-1 and a connecting piece 2-2, and the connecting piece 2-2 is provided with at least two through holes 2-3; the base 1 is provided with a slide groove 1-1 extending in the left and right directions and a connecting groove 1-2 adapted to the through hole 2-3, the slide groove 1-1 is slidably matched with the slider 2-1, and the connecting groove 1-2 runs through the base 1; the limiting roller 2 is connected to the base 1 by bolts passing through the through hole 2-3 and the connecting groove 1-2. After the ventilation pipe 4 is placed on the upper part of the base 1, the limiting rollers 2 on both sides are slid left and right to make the outer wall of the limiting roller 2 contact with the outer wall of the ventilation pipe 4, and the ventilation pipe 4 is clamped, and then the bolts are inserted into the through hole 2-3 and the connecting groove 1-2 in turn, and locked by the nut at the bottom of the base 1.

[0030] Multiple cutting mechanisms 3 can be provided, respectively located between each pair of limiting rollers 2 and between the front and rear ends of the limiting rollers 2 and the base 1, so as to cut ventilation pipes 4 of different sizes. The cutting mechanism 3 includes a blade 3-1, a lifting assembly and a front-back moving assembly; the blade 3-1 is located above the base 1 and is connected to the lifting assembly, and the lifting assembly is used to drive the blade 3-1 to move up and down to cut the ventilation pipe 4. Further, the lifting assembly includes a fixed frame 3-21, a vertically arranged screw rod 3-22 and a guide rod 3-23, and a motor 3-24 arranged on the upper part of the fixed frame 3-21 through a motor seat; the fixed frame 3-21 is in an inverted U shape, and fixing pieces 3-25 are provided at the lower parts of its two vertical parts. The upper parts of the two fixing pieces 3-25 are respectively connected to the screw rod 3-22 and the guide rod 3-23, and the screw rod 3-22 is rotatably connected to the fixing piece 3-25. The upper part of the screw rod 3-22 passes through the horizontal part of the fixed frame 3-21 and is connected to the output shaft of the motor 3-24; the blade 3-1 is located in the middle of the fixed frame 3-21, and connecting blocks 3-11 are provided on both the left and right sides thereof. One of the connecting blocks 3-11 is threadedly connected to the screw rod 3-22, and the other connecting block 3-11 is slidably connected to the guide rod 3-23. After the motor 3-24 is started, it drives the screw rod 3-22 to rotate. Under the guiding action of the guide rod 3-23, the connecting block 3-11 threadedly connected to the screw rod 3-22 is driven to move up and down, that is, the blade 3-1 is driven to move up and down to cut the ventilation pipe 4.

[0031] The lifting assembly is connected to the front-back moving assembly, and the front-back moving assembly is used to drive the lifting assembly to move along the axial direction of the ventilation pipe 4 to cut ventilation pipes 4 of different sizes. A scale 1-3 is also provided on the base 1 to facilitate observing whether the blade 3-1 moves to the position of the size to be cut. The scale 1-3 is arranged from the rear end to the front end of the base 1, that is, the rear end is the 0 scale 1-3. A stop piece 1-4 is provided at the rear end of the base 1 to block the end of the ventilation pipe 4. The front-back moving assembly includes a cylinder 3-31, a limiting groove 3-32 and a limiting block 3-33; the cylinder 3-31 is installed on the upper part of the base 1, specifically connected by bolts through a mounting seat. Its free end is connected to the lifting assembly, that is, connected to the fixed frame 3-21. A limiting block 3-33 is provided at the bottom of the lifting assembly, specifically, a limiting block 3-33 is provided at the bottom of the fixing piece 3-25. The limiting block 3-33 is slidably connected to the limiting groove 3-32, and the limiting groove 3-32 is arranged on the upper part of the base 1 and extends back and forth. When the cylinder 3-31 works, under the guiding action of the limiting groove 3-32 and the limiting block 3-33, the fixed frame 3-21 is driven to move linearly back and forth, so as to drive the blade 3-1 to move linearly back and forth to adjust the cutting position.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A ventilation pipe cutting device, characterized in that: It includes: A base (1), and a plurality of limiting rollers (2) and a cutting mechanism (3) arranged on the base (1); the limiting rollers (2) are symmetrically arranged in pairs on the left and right sides of the base (1), and their bottoms are slidably connected to the left and right sides of the base (1), and the limiting rollers (2) are used for clamping a ventilation pipe (4); The cutting mechanism (3) includes a blade (3-1), a lifting component and a front-back moving component; the blade (3-1) is located above the base (1) and is connected to the lifting component, and the lifting component is used for driving the blade (3-1) to move up and down to cut the ventilation pipe (4); the lifting component is connected to the front-back moving component, and the front-back moving component is used for driving the lifting component to move along the axial direction of the ventilation pipe (4).

2. The ventilation pipe cutting device according to claim 1, characterized in that: Sliders (2-1) and connecting pieces (2-2) are provided at the bottoms of the limiting rollers (2), and at least two through holes (2-3) are provided on the connecting pieces (2-2); Chutes (1-1) extending in the left-right direction and connecting grooves (1-2) adapted to the through holes (2-3) are provided on the base (1), the chutes (1-1) are slidably matched with the sliders (2-1), and the connecting grooves (1-2) penetrate through the base (1); the limiting rollers (2) and the base (1) are connected by bolts passing through the through holes (2-3) and the connecting grooves (1-2).

3. The ventilation pipe cutting device according to claim 1, characterized in that: The lifting component includes a fixing frame (3-21), a vertically arranged screw rod (3-22) and a guide rod (3-23), and a motor (3-24) arranged on the upper part of the fixing frame (3-21) through a motor (3-24) seat; The fixing frame (3-21) is in an "n" shape, and fixing pieces (3-25) are provided at the lower parts of its two vertical parts. The upper parts of the two fixing pieces (3-25) are respectively connected to the screw rod (3-22) and the guide rod (3-23), and the screw rod (3-22) is rotatably connected to the fixing piece (3-25). The upper part of the screw rod (3-22) passes through the horizontal part of the fixing frame (3-21) and is connected to the output shaft of the motor (3-24); The blade (3-1) is located in the middle of the fixing frame (3-21), and connecting blocks (3-11) are provided on both the left and right sides thereof. One of the connecting blocks (3-11) is threadedly connected to the screw rod (3-22), and the other connecting block (3-11) is slidably connected to the guide rod (3-23).

4. The ventilation pipe cutting device according to claim 1, characterized in that: The front-back moving component includes a cylinder (3-31), a limiting groove (3-32) and a limiting block (3-33); the cylinder (3-31) is installed on the upper part of the base (1), and its free end is connected to the lifting component. The limiting block (3-33) is provided at the bottom of the lifting component, and the limiting block (3-33) is slidably connected to the limiting groove (3-32). The limiting groove (3-32) is arranged on the upper part of the base (1) and extends front and back.

5. The ventilation pipe cutting device according to claim 1, characterized in that: A scale (1-3) is also provided on the base (1).

6. The ventilation pipe cutting device according to claim 1, characterized in that: A baffle (1-4) is provided at the rear end of the base (1).

7. The ventilation pipe cutting device according to claim 1, characterized in that: A clamping mechanism (5) for clamping the outer wall of the ventilation pipe (4) is provided on the upper front side of the base (1); The clamping mechanism (5) comprises two brackets (5-1) and two clamping plates (5-2) extending in the front-rear direction and having an arc-shaped cross section; the axes of the two clamping plates (5-2) coincide with each other and are used to clamp the ventilation pipe (4); the outer walls of the two clamping plates (5-2) are respectively connected to the two brackets (5-1) through connecting springs (5-3); and the bottom of the bracket (5-1) is connected to the upper part of the base (1).

8. The ventilation pipe cutting device according to claim 7, characterized in that: A plurality of support springs (1-5) are provided on the upper part of the base (1), a support plate (1-6) is provided on the upper part of the support springs (1-5), and the upper part of the support plate (1-6) is used to support the ventilation pipe (4).

9. The ventilation pipe cutting device according to claim 1, characterized in that: The bottom of the base (1) is provided with a plurality of supporting legs (1-7).

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