Pipe cutting equipment

Abstract

The present invention discloses a pipe cutting device, which is provided with a cutting mechanism for cutting pipes at a cutting station, comprising at least one pair of rollers that can alternately enter the cutting station and cooperate with the cutting mechanism to cut the pipes installed thereon, a position change mechanism for driving the rollers to switch positions, and a driving mechanism that can drive the rollers at the cutting station to rotate; by adopting this technical solution, at least one pair of rollers alternately enters the cutting station, so that an operator can load and unload pipes on rollers that are not at the cutting station while the equipment is cutting pipes, thereby improving work efficiency, avoiding the operator's operations at the cutting station, and reducing safety hazards.

Description

Technical Field

[0001] The present invention relates to machining equipment, in particular to cutting equipment, and specifically to cutting equipment for pipes. Background Art

[0002] After processing, some non-metallic tubes typically need to be cut to specifications. Traditional cutting methods include manual cutting with a wire saw or specialized cutting equipment. For example, Patent 201120076380.9 discloses a paper tube cutting machine with a rotating rod for mounting paper tubes. As the rod rotates, a cutting tool cuts the tubes. Because this solution only has one rotating rod, cutting must be stopped during both tube loading and unloading, and operators are at risk of being injured by the cutting tool during loading and unloading. Summary of the Invention

[0003] In order to solve the problems of low safety factor and low production efficiency of cutting equipment in the prior art, the technical solution adopted by the present invention is:

[0004] A pipe cutting device is provided with a cutting mechanism for cutting pipes at a cutting station, including at least one pair of rollers that can alternately enter the cutting station and cooperate with the cutting mechanism to cut the pipes installed thereon, a position change mechanism for driving the rollers to change positions, and a driving mechanism that can drive the rollers at the cutting station to rotate.

[0005] Furthermore, the shifting mechanism includes a rotating frame for mounting the roller, and a shifting drive device for driving the rotating frame to rotate and thereby drive the roller to perform position conversion.

[0006] Furthermore, the transposition drive device is a motor.

[0007] Furthermore, the transposition drive device is a hydraulic cylinder and a rack and pinion transmission mechanism.

[0008] Furthermore, the driving mechanism includes a driving wheel and a driving motor that drives the driving wheel to rotate. A driven wheel that can drive the roller to rotate is provided on each of the rollers. The driven wheel on the roller at the cutting station can contact the driving wheel, and the driven wheel is driven by the driving wheel to drive the roller to rotate.

[0009] Furthermore, the driving mechanism further includes an elastic pressure mechanism capable of driving the driving wheel to press the driven wheel, the elastic pressure mechanism including a guide member and a slider provided on the guide member for mounting the driving wheel, and an elastic member for applying force to the slider;

[0010] Furthermore, a detection switch is included to detect whether the slider moves.

[0011] Furthermore, the cutting mechanism includes a knife holder that can move toward the roller at the cutting station, and a blade for cutting the pipe is provided on the knife holder.

[0012] Furthermore, the tool holder includes a swing arm and a tool shaft, and the blade is mounted on the tool shaft.

[0013] Furthermore, a cutting motor for driving the cutter shaft to rotate is provided on the cutter holder.

[0014] Furthermore, a pressure member is provided on the tool holder to drive the tool holder to move so that the blade presses the pipe.

[0015] Furthermore, the pressure member is a spring or a counterweight.

[0016] Furthermore, a cylinder is provided which can drive the tool holder to swing and overcome the force of the pressure member to separate the blade from the pipe.

[0017] Furthermore, a cylinder is provided to drive the tool holder to move so that the blade presses the pipe.

[0018] This technical solution allows at least one pair of rollers to alternately enter the cutting station, allowing operators to load and unload pipes on rollers that are not in the cutting station while the equipment is cutting the pipe, thereby improving work efficiency, avoiding the operator's operations at the cutting station, and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the pipe cutting equipment of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the pipe cutting equipment of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the transposition mechanism and the driving mechanism of the present invention;

[0022] Figure 4 This is a schematic diagram of the cutting mechanism structure of the present invention; DETAILED DESCRIPTION

[0023] The present invention is intended to provide a pipe cutting device capable of achieving dual-station operation, so that pipe cutting and loading and unloading can be performed simultaneously. The device includes at least a pair of rollers 2, which can achieve station switching. When one roller 2 is in the cutting station, the other roller 2 is in the loading and unloading station. The operator can load or unload the roller in the loading and unloading station, while the other roller 2 can perform pipe cutting operations, thereby improving production efficiency and avoiding safety hazards when the operator operates at the cutting station. A cutting mechanism is provided at the cutting station to achieve pipe cutting operations at the station. The device is also provided with two major mechanisms: a shifting mechanism 3 and a driving mechanism 4. The shifting mechanism 3 achieves the switching of the roller 2 station, and the driving mechanism 4 drives the roller 2 in the cutting station, so that the roller 2 rotates and drives the pipe to cooperate with the cutting mechanism 1 for cutting.

[0024] The structure of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] like Figure 1 The figure shows a cutting mechanism 1 and two rollers 2. The two rollers 2 can exchange positions with each other so that one of the rollers 2 can be in the cutting station where the cutting mechanism 1 is located. At the cutting station, the cutting mechanism 1 can cut the pipe installed on the roller 2. During cutting, the roller 2 rotates to cut the pipe circumferentially, thereby cutting the pipe.

[0026] Therefore, the device needs to have two actions to complete the cutting, one is to move the roller 2 in the non-cutting position to the cutting position, and the other is to drive the roller 2 in the cutting position to rotate. Figure 2 A shifting mechanism 3 is provided in the equipment to drive the roller 2 to switch positions, and a driving mechanism 4 is provided to drive the roller 2 in the cutting position to rotate.

[0027] Specific replacement mechanisms such as Figure 3As shown, the rotating frame 3-1 includes two rollers 2 mounted at both ends of the rotating frame 3-1. When the rotating frame 3-1 rotates around its center, the two rollers 2 can be alternately switched to different working positions. The driving device 3-2 that drives the rotating frame 3-1 to rotate is a motor in this embodiment. The motor drives the rotating frame 3-1 to rotate 180 degrees to achieve the switching of the working positions of the two rollers 2. The working position switching can be achieved by rotating in one direction or by reciprocating swinging. Of course, this is only one embodiment. In actual use, a gear rack transmission mechanism can also be used as the driving device 3-2 to achieve the swinging of the rotating frame 3-1. This is not shown in the figure, but it is explained here accordingly. That is, a gear is set on the rotating shaft of the rotating frame 3-1. A cylinder drives the rack to rotate the gear to achieve the swinging of the rotating frame 3-1, thereby achieving the working position switching. Under this structure, the reciprocating motion of the cylinder can achieve the reciprocating swinging of the rotating frame 3-1, thereby achieving the working position switching of the rollers 2.

[0028] When one of the rollers 2 is in the cutting position, it is necessary to consider how to drive the roller 2 to rotate. Figure 3The embodiment of the driving mechanism 4 given is that the driving mechanism 4 includes a driving wheel 4-1 and a driving motor 4-2 that drives the driving wheel 4-1 to rotate. The driving wheel 4-1 is matched with the driven wheel 2-1 arranged on the roller 2. When the roller 2 reaches the cutting station, the driven wheel 2-1 contacts the driving wheel 4-1. When the driving wheel 4-1 rotates, it can drive the driven wheel 2-1 to rotate and then rotate the roller 2. The driving wheel 4-1 and the driven wheel 2-1 are preferably made of rubber material. On the one hand, it increases friction and improves the driving effect. On the other hand, it has elasticity and is not easy to cause damage to the equipment during collision or compression. Since the driving wheel 4-1 and the driven wheel 2-1 are driven by friction, it is best to provide a pre-pressure for the two so that they can contact better. In this embodiment, an elastic pressure mechanism is set to drive the driving wheel 4-1 and the driven wheel 2-1 to press each other. The elastic pressure mechanism includes a guide member 4-3 (i.e., the guide groove in the figure), and a slider is provided in the guide groove (obstructed and not shown in the figure). The driving wheel 4-1 is set on the slider, and an elastic member 4-4 (i.e., the spring in the figure) is provided between the slider and the guide groove. When the driven wheel 2-1 is close to the driving wheel 4-1, the slider is driven to move. At this time, the elastic member 4-4 exerts a force on the slider in the direction of the driven wheel 2-1, thereby further increasing the friction between the driving wheel 4-1 and the driven wheel 2-1. In this embodiment, the driving motor 4-2 and the driving wheel 4-1 are driven by a belt. Since the driving wheel 4-1 will move under the action of the driven wheel 2-1, the tension of the belt needs to be set within a controllable range, that is, the belt is not easy to be too tight to prevent the driving wheel 4-1 from being unable to move. Of course, the output shaft of the driving motor 4-2 can also be directly connected to the driving wheel 4-1 so that the driving motor 4-2 moves with the driving wheel 4-1.

[0029] In order to further determine whether the driven wheel 2-1 has reached the predetermined position, a detection switch 4-5 is also provided in the mechanism. By detecting whether the slider moves, it is determined whether the driven wheel 2-1 is in close contact with the driving wheel 4-1. Specifically, in this embodiment, a guide rod 4-6 is provided on the slider, a spring is sleeved on the guide rod 4-6, and the detection switch 4-5 is provided at the tail end of the guide rod 4-6. When the slider moves, the guide rod 4-6 moves accordingly. When the guide rod 4-6 touches the detection switch 4-5, it can be known that the driven wheel 2-1 is in the cutting position. In this way, the start and stop of the drive motor 4-2 and the start and stop of the shifting mechanism 3 can also be controlled by the detection switch 4-5.

[0030] The structure of the cutting mechanism 1 is further described below. Figure 4As shown, the cutting mechanism 1 includes a blade holder, which includes a swing arm 1-6 and a blade shaft 1-2. A blade 1-1 is mounted on the blade shaft 1-2. Multiple blades 1-1 can be provided as needed, and the spacing between blades 1-1 can be adjusted to allow for cutting multiple sections of pipe of varying specifications. The swing arm 1-6 is hinged to the machine frame and can swing. When the roller 2 is in the cutting position, the swing arm 1-6 swings, driving the blade 1-1 to press against the pipe, applying a certain amount of pressure to the pipe, thereby improving the cutting effect. The downward pressure on the blade 1-1 can be achieved by providing a pressure member 1-4 on the blade holder. In this embodiment, the pressure member 1-4 is implemented by a spring disposed between the blade holder and the frame. The spring's tension drives the blade holder downward, providing sufficient downward pressure on the blade 1-1. Alternatively, a counterweight can be used to provide sufficient downward pressure on the blade holder, or a cylinder can be used to drive the blade holder to swing downward, providing downward pressure on the blade 1-1. Of course, conventional means such as using a linear drive device to move the tool holder in a straight line so that the blade 1-1 is pressed on the pipe are not excluded. In this embodiment, the tension of the spring is used to provide downward pressure for the tool holder, such as Figure 1 As can be seen from the structure, when the roller 2 is shifted counterclockwise, the knife holder can be lifted up, thereby leaving the cutting station. Although this can be implemented, it is easy to damage the blade in this way, and the roller 2 can only be shifted counterclockwise because it is blocked by the knife holder when shifting clockwise and cannot reach the cutting station, or the blade cannot effectively press the pipe. Therefore, a cylinder 1-5 is provided in this embodiment, which drives the knife holder to overcome the spring tension so that the knife holder can be lifted up and out of the way, so that the roller 2 can be shifted smoothly after the cutting is completed. During the pipe cutting process, although the blade can be cut along the circumference of the pipe by rotating the roller 2, when the pipe is thick or the material is hard, the blade cannot cut through the pipe wall in a stationary state. Therefore, this embodiment adopts the following method: Figure 4 As shown, a cutting motor 1-3 is set on the tool holder, and the cutting motor 1-3 drives the tool shaft 1-2 to rotate and drives the blade 1-1 to rotate, thereby improving the cutting efficiency and efficiently cutting pipes of different thicknesses and materials.

Claims

1. A pipe cutting device, provided with a cutting mechanism (1) for cutting a pipe at a cutting station, characterized in that: The invention comprises at least one pair of rollers (2) capable of alternately entering a cutting station and cooperating with a cutting mechanism (1) to cut a pipe material installed thereon, a position change mechanism (3) for driving the rollers (2) to change positions, and a driving mechanism (4) capable of driving the rollers (2) in the cutting station to rotate; The driving mechanism (4) includes a driving wheel (4-1) and a driving motor (4-2) for driving the driving wheel (4-1) to rotate. A driven wheel (2-1) capable of driving the roller (2) to rotate is provided on each of the rollers (2). The driven wheel (2-1) on the roller (2) at the cutting station can contact the driving wheel (4-1). The driving wheel (4-1) drives the driven wheel (2-1) to rotate the roller (2) through friction. The driving mechanism (4) also includes an elastic pressure mechanism capable of driving the driving wheel (4-1) to press the driven wheel (2-1). The elastic pressure mechanism includes a guide member (4-3) and a guide member (4-3) provided on the guide member (4-3). A slider for mounting a driving wheel (4-1) and an elastic member (4-4) for applying force to the slider are provided on the driving mechanism (4); the driving mechanism (4) further comprises a detection switch (4-5) for detecting whether the slider moves; a guide rod (4-6) is provided on the slider; a spring is sleeved on the guide rod (4-6); the detection switch (4-5) is provided at the tail end of the guide rod (4-6); when the slider moves, the guide rod (4-6) moves accordingly; when the guide rod (4-6) touches the detection switch (4-5), it is known that the driven wheel (2-1) is in the cutting position; and the start and stop of the driving motor (4-2) and the start and stop of the shifting mechanism (3) can also be controlled by the detection switch (4-5).

2. The pipe cutting device according to claim 1, characterized in that: The shifting mechanism (3) comprises a rotating frame (3-1) for mounting the roller (2), and a driving device (3-2) for driving the rotating frame (3-1) to rotate and thereby driving the roller (2) to perform station shifting.

3. The pipe cutting device according to claim 2, characterized in that: The driving device (3-2) is a motor.

4. The pipe cutting device according to claim 2, characterized in that: The driving device (3-2) is a hydraulic cylinder and a gear rack transmission mechanism.

5. The pipe cutting device according to claim 1, characterized in that: The cutting mechanism (1) comprises a knife holder that can move toward a roller (2) at a cutting station, and a blade (1-1) for cutting pipes is arranged on the knife holder.

6. The pipe cutting device according to claim 5, characterized in that: The knife holder comprises a swing arm (1-6) and a knife shaft (1-2), and the blade (1-1) is mounted on the knife shaft (1-2).

7. The pipe cutting device according to claim 6, characterized in that: A cutting motor (1-3) for driving the cutter shaft (1-2) to rotate is provided on the cutter holder.

8. The pipe cutting device according to any one of claims 5 to 7, characterized in that: The knife holder is provided with a pressure piece (1-4) for driving the knife holder to move so that the blade (1-1) presses the pipe.

9. The pipe cutting device according to claim 8, characterized in that: The pressure member (1-4) is a spring or a counterweight.

10. The pipe cutting device according to claim 8, characterized in that: A cylinder (1-5) is also provided which can drive the knife holder to swing and overcome the action force of the pressure member (1-4) so ​​that the blade (1-1) is separated from the pipe.

11. The pipe cutting device according to any one of claims 5 to 7, characterized in that: A cylinder (1-5) is also provided for driving the knife holder to move so that the blade (1-1) presses the pipe.

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