A sawing machine for cutting large diameter round pipes

Abstract

The invention discloses a sawing machine for cutting large-diameter round tubes, which solves the problem that the existing sawing machines have a single cutting direction, resulting in a limited cutting application range and a poor pipe cutting effect. The sawing machine comprises a frame, a roller shaft is pivotally provided on one side of the frame, a walking mechanism is provided on the other side, a cutting mechanism is provided at the end of the walking mechanism, and a steering part is provided between the cutting mechanism and the walking mechanism for adjusting the direction and angle of the cutting mechanism. The present invention adopts a single cutting mechanism setting, and the cutting mechanism is adjusted to axial cutting and radial cutting of the pipe by adjusting the steering part, wherein the axial cutting requires moving the walking mechanism, and the radial cutting requires rotating the roller shaft to drive the pipe to rotate. The sawing machine for cutting large-diameter round tubes can be applicable to the cutting of pipes of different models and sizes, thereby expanding the scope of use, and the cutting size of the pipe can be freely controlled, thereby facilitating the subsequent tearing and crushing operation of the pipe.

Description

Technical Field

[0001] The invention relates to a cutting device, in particular to a sawing machine for cutting large-diameter round pipes. Background Art

[0002] The production process of plastic pipes inevitably produces some defective products. In order to reduce production costs, these defective products need to be recycled and reused. The defective products are shredded by a tearing machine and then ground. After the powder reaches a certain fineness, it is mixed into the raw materials for secondary use in a certain proportion. Because the diameter of some caliber pipes is too large (greater than 630mm), the tearing machine cannot tear up the defective products of large-caliber pipes. Large-caliber pipes cannot be shredded and cannot enter the grinding stage. Due to the uneven length, diameter and material varieties of defective pipes, the existing technology mainly uses a woodworking band saw or a portable electric saw to manually saw the large-caliber pipes into strips or sheets, and then sends them to the crusher for crushing. However, due to the uneven length, diameter and material of the pipes to be cut, it is very troublesome to use manual sawing of pipes, and the labor intensity is high and the work efficiency is low.

[0003] In addition, for brittle pipes such as PVC, their brittleness can be used to break them by dropping them from high altitude in winter. The way to break the pipes is to wait until the weather turns cold, then drop them from high altitude and break them into pieces smaller than 630mm, which are convenient for feeding into the shredder. Both of the above methods have disadvantages. Manual saws have low efficiency and are prone to injury if the saw gets stuck. The breaking method can only be used in winter in a low-temperature environment and is only suitable for pipes with low-temperature brittle characteristics. Unqualified pipes have a long stacking period, occupy a large warehouse area, and have a low warehouse turnover rate.

[0004] Patent document CN201792040U discloses an automatic plastic pipe sawing machine, comprising a frame extending longitudinally along the axial direction of the pipe to be cut, a pipe slicing mechanism installed at one end of the frame, the pipe slicing mechanism comprising a closed box, a channel for the pipe to be cut to pass through is provided on the box, a pipe axial slitting device composed of a cross-set saw blade mechanism is installed in the box, a supporting mechanism for supporting the pipe to be cut and an automatic pipe feeding mechanism for pushing the pipe to be cut assembled by sliding along a track extending along the frame are fixed on the frame corresponding to the channel on the box. This scheme has a simple structure, convenient operation, low manufacturing cost, no manual intervention is required during work, and fully automated operation is realized, which not only reduces the labor intensity of the operator and improves work efficiency, but also avoids the occurrence of common safety accidents caused by manual cutting. However, the pipe slicing mechanism in the device is only suitable for axial slitting, and the actual unqualified pipes are of different lengths and diameters, so the scope of application of the sawing machine with the above-mentioned single cutting method is limited, and the pipe cutting effect is not good. Summary of the invention

[0005] In view of the above-mentioned technical problems, the present invention provides a sawing machine for cutting large-diameter round pipes, which solves the problem that the existing pipe sawing machines have a single cutting direction, resulting in a limited cutting scope and poor pipe cutting effect.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A sawing machine for cutting large-diameter round pipes comprises a frame, a slide rail is arranged on one side of the frame, and a plurality of rollers are arranged on the other side. The plurality of rollers form a strip-shaped pipe slot for supporting pipes placed in the pipe slot and driving the pipes to rotate. A walking mechanism is arranged on the slide rail, and the walking mechanism can move parallel to the pipe slot. A cutting mechanism is arranged on the walking mechanism.

[0008] The cutting mechanism comprises a cutting part and a steering part, wherein the cutting part comprises at least a first motor and a circular saw, the first motor can drive the circular saw to rotate, and the circular saw can cut the pipe placed in the pipe placement groove when rotating;

[0009] The steering portion at least comprises a first rotating plate and a second rotating plate, the first rotating plate and the second rotating plate are connected to each other, and the first rotating plate and the second rotating plate can rotate relative to each other with their connection point as the center of the circle, and can be fixed after rotating at any angle;

[0010] The cutting part is fixed on the first rotating plate, and the second rotating plate is hinged on the traveling mechanism. The second rotating plate can rotate relative to the traveling mechanism at its hinged part, and can be fixed relative to the traveling mechanism at any angle.

[0011] Furthermore, in the above-mentioned sawing machine for cutting large-diameter round tubes, the walking mechanism includes a bracket, a first rack and a second motor, a walking wheel cooperating with the slide rail is provided at the bottom of the bracket, the second motor and the first rack are transmitted through a gear mechanism, and the cutting mechanism is fixed on the bracket.

[0012] Furthermore, the above-mentioned sawing machine for cutting large-diameter round pipes has a hollow slide groove on the upper part of the bracket, and also includes a telescopic arm configured to slide in the slide groove, the second rotating plate is hinged at the end of the telescopic arm, the telescopic arm is provided with a second rack, the bracket is provided with a gear driving handle meshing with the second rack, and a second fastener is provided between the slide groove and the telescopic arm.

[0013] Furthermore, in the above-mentioned sawing machine for cutting large-diameter round pipes, an arc-shaped groove body is provided on the second rotating plate, and a first fastener that can slide in the groove body is provided on the walking mechanism.

[0014] Furthermore, in the above-mentioned sawing machine for cutting large-diameter round tubes, the second rotating plate is also provided with a crank handle for driving the first rotating plate to rotate.

[0015] Furthermore, the above-mentioned sawing machine for cutting large-diameter round tubes also includes a third motor, and the third motor and each roller shaft are driven by a belt drive, a chain drive or a sprocket drive.

[0016] Furthermore, the above-mentioned sawing machine for cutting large-diameter round tubes is also provided with a tube presser on the frame.

[0017] Furthermore, the above-mentioned sawing machine for cutting large-diameter round pipes is also provided with a working platform on the bracket.

[0018] The beneficial effects of the embodiments of the present invention are as follows: the pipe is fixed on the pipe placement groove formed by multiple rollers, and the cutting mechanism can be first adjusted to the direction of radial cutting of the pipe through the steering part. When the cutting mechanism cuts the pipe, the roller drives the pipe to rotate at a low speed, thereby realizing radial cutting of the pipe without changing the position of the cutting mechanism. Then, the longer pipe is radially cut into multiple sections of pipe by driving the walking mechanism to move. Then, the cutting mechanism is adjusted to the axial direction of the pipe by adjusting the steering part, and the axial cutting of one side of the multiple sections of pipe is realized by driving the walking mechanism to move. Multiple axial cutting of the pipe can be realized by rotating the roller to drive the pipe to rotate. Therefore, the sawing machine for cutting large-diameter round pipes can be suitable for cutting pipes of different lengths, which expands the scope of use. The cutting size of the pipe can be freely controlled, thereby facilitating the subsequent tearing and crushing operation of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Northeast isometric view of the sawing machine for cutting large diameter round pipes of the present invention;

[0020] Figure 2 for Figure 1 Magnified partial view;

[0021] Figure 3 A northwest isometric view of a sawing machine for cutting large diameter round pipes according to the present invention;

[0022] Figure 4 for Figure 3 Magnified partial view;

[0023] Figure 5 Southwest isometric view of the sawing machine for cutting large diameter round pipes according to the present invention;

[0024] Figure 6 for Figure 5 Magnified partial view;

[0025] Figure 7 The left side view of the sawing machine for cutting large diameter round pipes according to the present invention.

[0026] The figure marks in the drawings of the specification include: frame 1, roller 2, slide rail 30, bracket 31, walking wheel 32, first rack 33, second motor 34, telescopic arm 35, second rack 36, gear drive handle 37, second fastener 38, first fastener 39, slide 310, first motor 41, circular saw 42, saw shaft 43, first rotating plate 50, second rotating plate 51, positioning member 52, trough body 53, third motor 6, pipe press 7, working platform 8, crank handle 9. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Example 1: Reference Figure 1 to Figure 7

[0029] The present invention provides a sawing machine for cutting large-diameter round pipes, comprising a frame 1, a slide rail 30 is provided on one side of the frame 1, and a plurality of rollers 2 are provided on the other side. The plurality of rollers 2 form a strip-shaped pipe slot for supporting the pipe placed in the pipe slot and driving the pipe to rotate. A walking mechanism is provided on the slide rail 30, and the walking mechanism can move parallel to the pipe slot, and a cutting mechanism is provided on the walking mechanism.

[0030] The cutting mechanism includes a cutting part and a steering part, wherein the cutting part at least includes a first motor 41 and a circular saw 42, the first motor 41 can drive the circular saw 42 to rotate, and the circular saw 42 can cut the pipe placed in the pipe placement groove when rotating;

[0031] The steering portion at least includes a first rotating plate 50 and a second rotating plate 51, the first rotating plate 50 and the second rotating plate 51 are connected to each other, and the first rotating plate 50 and the second rotating plate 51 can rotate relative to each other in a circular shape at their connection, and can be fixed after rotating at any angle;

[0032] The cutting part is fixed on the first rotating plate 50, and the second rotating plate 51 is hinged on the traveling mechanism. The second rotating plate 51 can rotate relative to the traveling mechanism at its hinged part and can be fixed relative to the traveling mechanism at any angle.

[0033] As attached Figure 4 As shown:

[0034] Specifically, the cutting part includes a first motor 41, a saw shaft 43 and a circular saw 42. The circular saw 42 is fixed to the end of the saw shaft 43. The first motor 41 is fixed to the first rotating plate 50. The saw shaft 43 is pivoted on the first rotating plate 50. Both ends of the saw shaft 43 can be fixed by bearings. The first motor 41 and the saw shaft 43 are driven by a belt drive, a chain drive, a sprocket drive or a gear drive (the belt drive is specifically shown in the accompanying drawings). After the first motor 41 is started, the saw shaft 43 is driven to rotate by the transmission belt, and the saw shaft 43 drives the circular saw 42 to rotate at a high speed, thereby completing the cutting of the pipe.

[0035] As attached Figure 4 and Figure 7 As shown:

[0036] The steering part specifically listed includes a first rotating plate 50, a second rotating plate 51 and a positioning member 52. The figure specifically illustrates that the first rotating plate 50 is hinged with the second rotating plate 51, and the first rotating plate 50 and the second rotating plate 51 are always in surface contact when they rotate around the hinge axis. After the two rotate to a certain angle, the hinge axis is fixed by the positioning member 52 to achieve the first rotating plate 50 and the second rotating plate 51 being fixed at any angle; the second rotating plate 51 is hinged at the end of the bracket 31, and an arc-shaped groove body 53 is provided on the second rotating plate 51, and a walking mechanism is provided on the groove body. The first fastener 39 slides in the groove 53, and when the second rotating plate 51 rotates around the walking mechanism, the first fastener 39 slides in the groove 53. When the second rotating plate 51 rotates to a suitable angle, the first fastener 39 is fixed to the groove 53, so that after the second rotating plate 51 rotates relative to the walking mechanism, the second rotating plate 51 can be fixed relative to the walking mechanism at any angle, and the cutting part is fixed on the first rotating plate 50, and when the second rotating plate 51 rotates, it drives the first rotating plate 50 to rotate, so that the cutting part is fixed to the walking mechanism at various angles.

[0037] The specific usage of the sawing machine for cutting large-diameter round pipes is as follows:

[0038] The pipe is fixed on the roller 2, and the cutting mechanism is adjusted to the radial cutting direction of the pipe by the steering part. When the cutting mechanism cuts the pipe, the roller 2 is rotated, and the roller 2 drives the pipe to rotate at a low speed, so that the radial cutting of the pipe is realized when the cutting mechanism is in a fixed position, and then the longer pipe is radially cut into multiple sections of pipe by driving the walking mechanism to move; then the cutting mechanism is adjusted to the axial direction of the pipe by adjusting the steering part, and the axial cutting of one side of the multiple sections of pipe is realized by driving the walking mechanism to move. Multiple axial cutting of the pipe can be realized by rotating the roller 2 to drive the pipe to rotate. Therefore, the sawing machine for cutting large-diameter round pipes can be suitable for cutting pipes of different models and sizes, expanding the scope of use, and the cutting size of the pipe can be freely controlled, thereby facilitating the subsequent tearing and crushing operations.

[0039] Since the cutting mechanism is fixed on the first rotating plate 50, the cutting mechanism can be adjusted to be parallel to the axis of the pipe by rotating the first rotating plate 50 left and right, and then the first rotating plate 50 and the second rotating plate 51 are fixed by the positioning member 52 to achieve the positioning of the cutting mechanism, and then the walking mechanism is driven to move on the frame 1 to achieve axial cutting of the pipe; when radial cutting of the pipe is required, the first fastener 39 is first loosened, and since the second rotating plate 51 is hinged at the end of the walking mechanism, the second rotating plate 51 is flipped up and down relative to the walking mechanism. While the second rotating plate 51 is flipped up and down, the loosened first fastener 39 slides in the arc-shaped groove 53 on the second rotating plate 51 until the cutting mechanism is adjusted to be consistent with the radial direction of the pipe, and then the first fastener 39 is applied with a tightening force to fix the cutting mechanism for the final radial cutting. The position of the cutting mechanism can be kept unchanged during cutting, and the roller shaft 2 is rotated, and the roller shaft 2 drives the pipe to rotate synchronously, so that the radial cutting of the pipe is achieved without changing the position of the cutting mechanism, and then the walking mechanism is driven to move, and the longer pipe is cut into multiple sections of pipe after multiple radial cuts.

[0040] Example 2: Reference Figure 2 and Figure 6

[0041] Compared with Example 1, the difference is that the walking mechanism includes a bracket 31, a first rack 33 and a second motor 34. A walking wheel 32 cooperating with the slide rail 30 is provided at the bottom of the bracket 31. The second motor 34 and the first rack 33 are transmitted through a gear mechanism (the spur gear transmission mechanism is specifically illustrated in the accompanying drawings). The slide rail 30 is fixedly set on the frame 1 along the direction of the pipe, and the walking wheel 32 is configured on the slide rail. When the second motor 34 is started, the spur gear transmission mechanism engages with the first rack 33, thereby driving the circular saw 42 fixed on the bracket 31 to move, thereby realizing axial cutting of the pipe, and rotating the roller 2 to realize multi-segment axial cutting of the pipe.

[0042] Example 3: Reference Figure 2 , Figure 6 and Figure 7

[0043] Compared with Example 2, the difference is that the upper part of the bracket 31 is configured to have a hollow slide groove 310, and also includes a telescopic arm 35 configured to slide in the slide groove 310, the second rotating plate 51 is hinged at the end of the telescopic arm 35, the telescopic arm 35 is provided with a second rack 36, the bracket 31 is provided with a gear driving handle 37 meshing with the second rack 36, and a second fastener 38 is provided between the slide groove 310 and the telescopic arm 35; the telescopic arm 35 can slide in the slide groove 310, and then the actual distance between the circular saw 42 and the pipe can be adjusted, so that it is suitable for cutting pipes of different diameters, thereby expanding the scope of use.

[0044] The specific movement mode of the telescopic arm 35 is as follows:

[0045] First, loosen the second fastener 38 to convert the integral structure formed by the slide groove 310 and the telescopic arm 35 into a moving pair between the telescopic arm 35 and the slide groove 310, and then manually shake the gear drive handle 37, the gear of the gear drive handle 37 engages with the second rack 36, and then when the gear drive handle 37 rotates, the telescopic arm 35 is driven to slide in the slide groove 310. When the actual distance between the circular saw 42 and the pipe is adjusted to be appropriate, the slide groove 310 and the telescopic arm 35 are locked by the second fastener 38, so that the degree of freedom between the telescopic arm 35 and the slide groove 310 is equal to zero.

[0046] Example 4: Reference Figure 4

[0047] Compared with Examples 1 to 3, the difference is that a crank 9 for driving the first rotating plate 50 to rotate is provided on the second rotating plate 51, and the first rotating plate 50 can be rotated and fixed by the crank 9, which improves the convenience of operation and reduces the production risk factor.

[0048] Example 5: Reference Figure 2 and Figure 4

[0049] Compared with the above embodiment, the difference is that the sawing machine for cutting large-diameter round pipes also includes a third motor 6. The third motor 6 and each roller 2 are driven by a belt drive, a chain drive, or a sprocket drive. The chain drive is specifically illustrated in the accompanying drawings. The third motor 6 drives each roller 2 to rotate, which is easy to operate and saves manpower. At the same time, the rotation control of the roller 2, i.e. the pipe to be cut, is more precise.

[0050] Example 6: Reference Figure 1 , Figure 2 and Figure 3

[0051] Compared with Example 4, the difference is that the frame 1 is further provided with a pipe presser 7, which can firmly fix the waste pipe to be cut and the roller 2 together. When performing axial cutting, especially for small-diameter pipes, it can avoid the pipe displacement during cutting by the circular saw 42, causing the saw to get stuck and other adverse factors that affect cutting, thereby reducing the risk of cutting and improving the pipe cutting effect; the bracket 31 is also provided with a working platform 8, and the operator can stand on the working platform 8 to adjust the crank handle 9 to adjust the circular saw 42 to the direction of axial cutting of the pipe, adjust the first fastener 39, flip the second rotating plate 51 up and down, and then adjust the circular saw 42 to the direction of radial cutting of the pipe; the movement and positioning of the telescopic arm 35 can be adjusted by operating the second fastener 38 and the gear drive handle 37, so that it can be flexibly applied to cutting pipes of different diameters.

[0052] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A sawing machine for cutting large diameter round pipes, characterized in that The machine comprises a frame (1), a slide rail (30) is provided on one side of the frame (1), and a plurality of rollers (2) are provided on the other side, the plurality of rollers (2) form a strip-shaped pipe placement groove for supporting a pipe placed in the pipe placement groove and driving the pipe to rotate, a walking mechanism is provided on the slide rail (30), the walking mechanism can move parallel to the pipe placement groove, and a cutting mechanism is provided on the walking mechanism; The cutting mechanism comprises a cutting part and a steering part, wherein the cutting part at least comprises a first motor (41) and a circular saw (42), the first motor (41) can drive the circular saw (42) to rotate, and the circular saw (42) can cut the pipe placed in the pipe placement groove when rotating; The steering portion at least comprises a first rotating plate (50) and a second rotating plate (51), the first rotating plate (50) and the second rotating plate (51) are connected to each other, and the first rotating plate (50) and the second rotating plate (51) can rotate relative to each other with their connection point as the center of the circle, and can be fixed after rotating at any angle; The cutting part is fixed on the first rotating plate (50), and the second rotating plate (51) is hinged on the walking mechanism. The second rotating plate (51) can rotate relative to the walking mechanism at its hinged part and can be fixed relative to the walking mechanism at any angle. The second rotating plate (51) is provided with an arc-shaped groove (53), and the walking mechanism is provided with a first fastener (39) that can slide in the groove (53); The second rotating plate (51) is also provided with a crank (9) for driving the first rotating plate (50) to rotate.

2. The sawing machine for cutting large diameter round pipes according to claim 1, characterized in that: The walking mechanism comprises a bracket (31), a first rack (33) and a second motor (34); a walking wheel (32) matched with the slide rail (30) is provided at the bottom of the bracket (31); the second motor (34) and the first rack (33) are driven by a gear mechanism; and the cutting mechanism is fixed on the bracket.

3. The sawing machine for cutting large diameter round pipes according to claim 2, characterized in that: The upper portion of the bracket (31) is provided with a hollow slide groove (310), and further comprises a telescopic arm (35) configured to slide in the slide groove (310), the second rotating plate (51) is hinged at the end of the telescopic arm (35), the telescopic arm (35) is provided with a second rack (36), the bracket (31) is provided with a gear driving handle (37) meshing with the second rack (36), and a second fastener (38) is provided between the slide groove (310) and the telescopic arm (35).

4. The sawing machine for cutting large diameter round pipes according to claim 3, characterized in that It also comprises a third motor (6), and the third motor (6) and each roller shaft (2) are driven by a belt, a chain or a sprocket.

5. The sawing machine for cutting large diameter round pipes according to claim 4, characterized in that It also comprises a third motor (6), and the third motor (6) and each roller shaft (2) are driven by a belt, a chain or a sprocket.

6. The sawing machine for cutting large diameter round pipes according to claim 5, characterized in that: The frame (1) is also provided with a pipe press (7).

7. The sawing machine for cutting large diameter round pipes according to claim 6, characterized in that: The frame (1) is also provided with a pipe press (7).

8. The sawing machine for cutting large diameter round pipes according to claim 7, characterized in that: A working platform (8) is also provided on the support (31).

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