Pipe cutting device

Abstract

The utility model relates to the technical field of pipe production, in particular to a pipe cutting device which comprises a conveying device, a cutting device and a positioning device, the conveying device is provided with two sliding devices at intervals along the conveying direction, and the top of the sliding device on one side of the feeding direction is provided with the cutting device which is transversely arranged above the conveying device in a crossing mode. A positioning device transversely spanning above the conveying device is arranged at the top of the sliding device on one side of the material removing direction; after the outer end of a pipe is in contact with the positioning part of the positioning device, the positioning device can move towards the flow direction under the action of the corresponding sliding device, at the moment, the extruder can continue to extrude the pipe, and the cutting device is pulled to move through the measuring rod while the positioning device moves. At the moment, the cutting device and the positioning device are fixed relative to the position of the outer end of the pipe, after the pipe is cut by the cutting device, the cut pipe can be taken out, and then the cutting device and the positioning device are reset through manual pushing or by means of other equipment.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and in particular to a pipe cutting device. Background Technology

[0002] In the production process of plastic pipes, they are extruded through an extruder, cooled, and then transported online. However, cutting plastic pipes requires a certain cutting time (the larger the pipe diameter and the thicker the pipe wall, the longer the cutting time). In the existing cutting device, the position of the extruder is fixed relative to the extruder. This method has the disadvantage that the extruder needs to stop extrusion briefly during the cutting process, which affects the production efficiency. In addition, the plastic pipes are prone to quality problems and defects at the points where extrusion is briefly stopped.

[0003] To address this, we designed a pipe cutting device. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a pipe cutting device.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A pipe cutting device includes a conveying device, a cutting device, and a positioning device. The conveying device has two sliding devices spaced apart along the conveying direction. The top of the sliding device on the material receiving side has a cutting device that is laterally mounted above the conveying device. The top of the sliding device on the material receiving side has a positioning device that is laterally mounted above the conveying device. The cutting device has a measuring rod along the pipe conveying direction on the side corresponding to the material receiving direction. The positioning device has a connecting ear plate that is slidably sleeved on the body of the measuring rod, and the connecting ear plate is screwed with a locking bolt that can radially compress the body of the measuring rod.

[0007] Preferably, it also includes a reset device capable of driving the cutting device and the positioning device to reset.

[0008] Preferably, the reset device includes a fixed pulley, a pull rope, and a counterweight. The fixed pulley is located on the side of the transmission device and is spaced apart at positions in the material feeding direction of the cutting device and / or the positioning device. One end of the pull rope is provided with a counterweight, and the other end passes around the fixed pulley and is connected to the cutting device and / or the positioning device.

[0009] Preferably, the pulling rope includes a rigid section connected to the counterweight and an elastic section connected to the cutting device and / or positioning device, the elastic section being located between the counterweight and the cutting device and / or positioning device.

[0010] Preferably, there are two reset devices, located on opposite sides of the transmission device.

[0011] Preferably, the sliding device includes two linear slide rails respectively located on both sides of the transmission device, each linear slide rail being slidably connected to a sliding block, and the sliding block being connected to a corresponding cutting device or positioning device.

[0012] Preferably, the sliding block is provided with a rolling wheel that rolls against the top surface of the corresponding linear slide rail.

[0013] Preferably, the cutting device is equipped with a clamping device for pressing the pipe to be cut.

[0014] Preferably, the clamping device includes a horizontal mounting plate corresponding to the cutting device, and inverted V-shaped pressure plates are spaced apart below the horizontal mounting plate;

[0015] The horizontal mounting plate is also equipped with a drive component that can drive the V-shaped pressure plate to descend.

[0016] Preferably, the driving component is a telescopic device or a spring telescopic rod.

[0017] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0018] 1. When the outer end of the pipe contacts the positioning part of the positioning device, the positioning device can move in the outflow direction under the action of the corresponding sliding device. At this time, the extruder can continue to extrude the pipe. While the positioning device moves, the cutting device is pulled by the measuring rod. At this time, the cutting device and the positioning device are fixed relative to the outer end of the pipe. After the cutting device cuts the pipe, the cut pipe can be taken out. Then, the cutting device and the positioning device can be reset by pushing manually or by using other equipment.

[0019] 2. The reset device is designed so that after the cut pipe is removed, the counterweight pulls the pulling rope downwards, causing both the cutting device and the positioning device to automatically reset, without increasing the force on the cutting device and the positioning device during their movement.

[0020] 3. The driving component is a spring telescopic rod, which can drive the driving component and V-shaped pressure plate to descend at the same time as the cutting part is driven to descend by the lifting part of the cutting device. This allows the V-shaped pressure plate to squeeze the pipe and the pipe to be pressed tightly by the contraction of the driving component. This configuration allows the pressing device to rise, fall and press the pipe with the power of the cutting device, without the need for a separate driving device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 for Figure 1 A magnified view of part of I;

[0023] Figure 3 This is the front view of the present invention.

[0024] In the diagram: 1. Transmission device; 2. Sliding device; 21. Linear slide rail; 22. Sliding block; 23. Roller; 3. Cutting device; 4. Positioning device; 5. Measuring rod; 6. Connecting ear plate; 7. Locking bolt; 8. Reset device; 81. Fixed pulley; 82. Pull rope; 83. Counterweight; 9. Pressing device; 91. Horizontal mounting plate; 92. V-shaped pressure plate; 93. Driving component. Detailed Implementation

[0025] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. These are for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0026] Example 1, in conjunction with Appendix Figure 1-3 A pipe cutting device includes a transmission device 1, a cutting device 3 and a positioning device 4. Since the transmission device 1, the cutting device 3 and the positioning device 4 are all existing technologies, their specific structures will not be described again here.

[0027] The conveying device 1 is provided with two sliding devices 2 at intervals along the conveying direction. The top of the sliding device 2 on the material receiving side is provided with a cutting device 3 that is horizontally mounted above the conveying device 1. The top of the sliding device 2 on the material discharge side is provided with a positioning device 4 that is horizontally mounted above the conveying device 1.

[0028] Furthermore, the sliding device 2 includes two linear slide rails 21 respectively located on both sides of the transmission device 1. Each linear slide rail 21 is slidably connected to a sliding block 22, and the sliding block 22 is connected to the corresponding cutting device 3 or positioning device 4. That is to say, both the cutting device 3 and the positioning device 4 have a set of linear slide rails 21 and sliding blocks 22 on both sides to ensure the stability of the cutting device 3 and the positioning device 4.

[0029] As needed, in order to reduce the friction between the sliding block 22 and the linear slide rail 21, the sliding block 22 is provided with a rolling roller 23 that rolls against the top surface of the corresponding linear slide rail 21; that is, the rolling engagement between the rolling roller 23 and the linear slide rail 21 replaces the sliding engagement between the sliding block 22 and the linear slide rail 21, and the friction between the sliding block 22 and the linear slide rail 21 is reduced by utilizing the characteristic that the rolling friction coefficient is less than the sliding friction coefficient.

[0030] As needed, the top surface of the linear guide 21 is provided with a raceway along its length for the rolling roller 23 to roll.

[0031] The cutting device 3 has a measuring rod 5 on one side corresponding to the material feeding direction, which is along the pipe conveying direction. The positioning device 4 has a connecting ear plate 6 that is slidably sleeved on the body of the measuring rod 5, and the connecting ear plate 6 is screwed with a locking bolt 7 that can radially compress the body of the measuring rod 5.

[0032] Specifically, the measuring rod 5 has a scale on its body, which is used to measure the distance between the cutting device 3 and the positioning device 4, specifically the distance between the positioning part of the positioning device 4 and the cutting part of the cutting device 3.

[0033] As needed, to prevent the locking bolt 7 from squeezing the measuring rod 5, causing slight deformation of the measuring rod 5 and affecting the smooth sliding fit between the measuring rod 5 and the connecting ear plate 6, the measuring rod 5 has a plane or groove along its circumference for the locking bolt 7 to squeeze. That is, when the locking bolt 7 squeezes and locks the relative position between the measuring rod 5 and the connecting ear plate 6, the position where the locking bolt 7 squeezes the measuring rod 5 is on the plane or groove.

[0034] Before use, first determine the distance between the cutting device 3 and the positioning device 4 according to the length of the pipe after cutting, and then use the locking bolt 7 to press and lock the relative position between the measuring rod 5 and the connecting ear plate 6.

[0035] In use, the pipe extruded by the extruder is cooled and then transported by the transmission device 1. When the outer end of the pipe contacts the positioning part of the positioning device 4, the positioning device 4 moves in the outflow direction under the action of the corresponding sliding device 2. At this time, the extruder can continue to extrude the pipe. While the positioning device 4 is moving, the cutting device 3 is pulled to move by the measuring rod 5. At this time, the cutting device 3 and the positioning device 4 are fixed in position relative to the outer end of the pipe. After the cutting device 3 cuts the pipe, the cut pipe can be taken out. Then, the cutting device 3 and the positioning device 4 can be reset by manual pushing or with the help of other equipment.

[0036] Example 2, in conjunction with Appendix Figure 1 A pipe cutting device, which differs from Embodiment 1 in that, based on Embodiment 1, it further includes a reset device 8 that can drive the cutting device 3 and the positioning device 4 to reset.

[0037] In one possible implementation, the reset device 8 includes a fixed pulley 81, a pull rope 82, and a counterweight 83. The fixed pulley 81 is located on the side of the transmission device 1 and is positioned at intervals along the material feeding direction of the cutting device 3 and / or the positioning device 4. One end of the pull rope 82 is equipped with the counterweight 83, and the other end passes around the fixed pulley 81 and is connected to the cutting device 3 and / or the positioning device 4. That is, after the cut pipe is removed, the counterweight 83 pulls the pull rope 82 downwards, and the pull rope 82 pulls the corresponding cutting device 3 and / or positioning device 4 to reset, thereby causing both the cutting device 3 and the positioning device 4 to automatically reset.

[0038] When the reset device 8 has one fixed pulley 81, one pull rope 82, and one counterweight 83, the fixed pulley 81 can be spaced apart on one side of the material feeding direction of the cutting device 3, and the end of the pull rope 82 away from the counterweight 83 is connected to the cutting device 3; the fixed pulley 81 can also be spaced apart between the cutting device 3 and the positioning device 4, and the end of the pull rope 82 away from the counterweight 83 is connected to the positioning device 4; when the reset device 8 has two fixed pulleys 81, two pull ropes 82, and two counterweights 83, one fixed pulley 81 can be spaced apart on one side of the material feeding direction of the cutting device 3, and the end of the pull rope 82 corresponding to the fixed pulley 81 away from the counterweight 83 is connected to the cutting device 3; the other fixed pulley 81 can also be spaced apart between the cutting device 3 and the positioning device 4, and the end of the pull rope 82 corresponding to the fixed pulley 81 away from the counterweight 83 is connected to the positioning device 4.

[0039] Furthermore, the pull rope 82 includes a rigid section connected to the counterweight 83 and an elastic section connected to the cutting device 3 and / or the positioning device 4. The elastic section is located between the counterweight 83 and the cutting device 3 and / or the positioning device 4. That is, when the pipe touches the positioning part of the positioning device 4, the elastic deformation of the elastic section can delay the rising time of the counterweight 83, so that the rising acceleration time of the counterweight 83 is longer, preventing the collision force between the pipe and the positioning device 4 and the pulling force of the pull rope 82 from being too large instantaneously.

[0040] In other embodiments, the transmission device 1 can also reset the cutting device 3 and the positioning device 4 by means of a return spring. Since the return spring is a commonly used component in the prior art, its installation method will not be described in detail here.

[0041] Preferably, to ensure the balance of the reset force, there are two reset devices 8, which are respectively located on both sides of the transmission device 1.

[0042] Example 3, in conjunction with Appendix Figure 1 , 3 A pipe cutting device, based on embodiment one or two, wherein the cutting device 3 is provided with a clamping device 9 for pressing the pipe to be cut.

[0043] Furthermore, the clamping device 9 includes a horizontal mounting plate 91 corresponding to the cutting device 3, with inverted V-shaped pressure plates 92 spaced below the horizontal mounting plate 91; the horizontal mounting plate 91 is also provided with a driving member 93 capable of driving the V-shaped pressure plates 92 to descend. This arrangement allows the pipe to be squeezed by the V-shaped pressure plates 92 before the cutting device 3 cuts the pipe, ensuring that the position of the pipe is fixed and improving the cutting accuracy.

[0044] In one possible implementation, the drive member 93 can be a telescopic device, in which case the fixed part of the drive member 93 is mounted on the fixed part of the cutting device 3, for example, on the housing of the cutting device 3.

[0045] In one possible implementation, the drive member 93 can be a spring telescopic rod, in which case the fixed part of the drive member 93 is installed on the lifting part of the cutting device 3; that is, while the lifting part of the cutting device 3 drives the cutting part to descend, it can also drive the drive member 93 and the V-shaped pressure plate 92 to descend, so that the V-shaped pressure plate 92 squeezes the pipe and presses the pipe under the action of the contraction of the drive member 93. This arrangement allows the pressing device 9 to rise, fall and press the pipe with the power of the cutting device 3, without the need for a separate drive device.

[0046] It should be noted that the cutting device 3 has an outer shell and a lifting device inside the outer shell. The lifting part of the lifting device is equipped with a cutting machine. That is, the cutting machine driven by the lifting device moves downward to complete the cutting operation of the pipe. After the cutting is completed, the lifting device drives the cutting machine to move upward to reset.

[0047] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A pipe cutting device, comprising a conveying device (1), a cutting device (3), and a positioning device (4), characterized in that: The conveying device (1) is provided with two sliding devices (2) at intervals along the conveying direction. The top of the sliding device (2) on the side of the material receiving direction is provided with a cutting device (3) that is horizontally spanned above the conveying device (1). The top of the sliding device (2) on the side of the material receiving direction is provided with a positioning device (4) that is horizontally spanned above the conveying device (1). The cutting device (3) is provided with a measuring rod (5) along the pipe conveying direction on the side corresponding to the material receiving direction. The positioning device (4) is provided with a connecting ear plate (6) that is slidably sleeved on the body of the measuring rod (5). The connecting ear plate (6) is screwed with a locking bolt (7) that can radially compress the body of the measuring rod (5).

2. The pipe cutting device according to claim 1, characterized in that: It also includes a reset device (8) that can drive the cutting device (3) and the positioning device (4) to reset.

3. The pipe cutting device according to claim 2, characterized in that: The reset device (8) includes a fixed pulley (81), a pull rope (82) and a counterweight (83). The fixed pulley (81) is located on the side of the transmission device (1) and is spaced apart at the material feeding direction of the cutting device (3) and / or the positioning device (4). One end of the pull rope (82) is provided with a counterweight (83), and the other end passes around the fixed pulley (81) and is connected to the cutting device (3) and / or the positioning device (4).

4. The pipe cutting device according to claim 3, characterized in that: The pull rope (82) includes a rigid section connected to the counterweight (83) and an elastic section connected to the cutting device (3) and / or the positioning device (4), the elastic section being located between the counterweight (83) and the cutting device (3) and / or the positioning device (4).

5. The pipe cutting device according to any one of claims 2-4, characterized in that: The reset device (8) has two parts, which are respectively located on both sides of the transmission device (1).

6. The pipe cutting device according to claim 1, characterized in that: The sliding device (2) includes two linear slide rails (21) respectively located on both sides of the transmission device (1). Each linear slide rail (21) is slidably connected to a sliding block (22), and the sliding block (22) is connected to the corresponding cutting device (3) or positioning device (4).

7. The pipe cutting device according to claim 6, characterized in that: The sliding block (22) is provided with a rolling wheel (23) that rolls against the top surface of the corresponding linear slide rail (21).

8. The pipe cutting device according to claim 1, characterized in that: The cutting device (3) is equipped with a clamping device (9) for pressing the pipe to be cut.

9. The pipe cutting device according to claim 8, characterized in that: The pressing device (9) includes a horizontal mounting plate (91) corresponding to the cutting device (3), and an inverted V-shaped pressure plate (92) is provided at intervals below the horizontal mounting plate (91). The horizontal mounting plate (91) is also provided with a drive element (93) that can drive the V-shaped pressure plate (92) to descend.

10. The pipe cutting device according to claim 9, characterized in that: The driving component (93) is a telescopic device or a spring telescopic rod.

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