A flying knife cutting device

Abstract

The application discloses a flying knife cutting device, which comprises a supporting seat, a cutting knife assembly and a plurality of guide piece driving devices. The cutting knife assembly comprises a knife seat and a cutting knife. The plurality of guide pieces comprise channels and cutting grooves, and the cutting knife can pass through the cutting grooves of the guide pieces. The knife seat is fixed on a rotating shaft of the driving device, and the driving device drives the cutting knife assembly to rotate, so that the cutting knife cuts the to-be-cut articles in the corresponding channels during the rotation. The flying knife cutting device can cut a plurality of to-be-cut articles in the channels of the plurality of guide pieces at one time, realizes the cutting of a plurality of to-be-cut articles at one time, and greatly improves the cutting efficiency.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and in particular to a flying knife cutting device. Background Technology

[0002] Currently, commonly used mechanical pipe cutting machines are divided into gantry pipe cutting machines, rotary pipe cutting machines, and fly knife pipe cutting machines. Chinese patent announcements CN206855523U (a pipe cutting machine) and CN214025826U (a pipe cutting machine for cutting silicone resin fiberglass heat shrink tubing) are both gantry pipe cutting machines. In this type of machine, the pipe is prone to shifting, and the cut is uneven, resulting in poor cutting quality. Chinese patent announcements CN206869211U (a pipe cutting machine for cutting heat shrink tubing) and CN112297075A (a pipe cutting device for MPP cable protection pipes) are both rotary pipe cutting machines. These machines are suitable for cutting relatively thin pipes, but when cutting thicker pipes, they tend to produce uneven cuts, burrs, and poor cutting quality. Furthermore, these two types of pipe cutting machines have poor adaptability, typically only capable of cutting one type of pipe.

[0003] Existing fly knife cutting devices, while generally meeting production requirements, suffer from several drawbacks due to their flawed design. These drawbacks are particularly pronounced when cutting multiple pipes simultaneously. For example, time differences during cutting result in pipes of varying lengths; uneven force distribution on the fly knife, with the force point concentrated in one location, increases the risk of breakage; excessive localized cutting heat leads to uneven cuts; and poor adaptability to different pipe specifications. Consequently, in actual production, it is sometimes necessary to reduce the fly knife speed or to stop the machine for maintenance, resulting in significant time and material waste – a costly and labor-intensive process. Summary of the Invention

[0004] The main objective of this invention is to provide a flying knife cutting device that aims to improve cutting effect and efficiency, while being adaptable to cutting items of various sizes.

[0005] To achieve the above objectives, the present invention provides a flying knife cutting device, comprising:

[0006] Support base;

[0007] A cutting assembly includes a blade holder and a cutting blade, one end of which is fixed to the blade holder;

[0008] Multiple guide members, each of the guide members having a cutting groove and a channel for passing through the item to be cut, the cutter passing through the cutting groove of the guide member, the multiple guide members being disposed on the support base;

[0009] A driving device is provided, wherein the blade holder is fixed on the rotating shaft of the driving device; the driving device drives the cutting blade assembly to rotate, so that the cutting blade passes through the cutting groove and cuts the item to be cut in the corresponding channel during the rotation.

[0010] Furthermore, the cutter of the cutter assembly is radially arranged along the rotation axis of the drive device, and the plurality of guide members are radially arranged along the rotation axis of the drive device.

[0011] Furthermore, the cutter assembly is radially arranged along the rotation axis of the drive device, the cutter forms a certain angle with the cutter holder, and the angle formed by the arrangement direction of the plurality of guide members and the cutter holder is the same as the angle formed by the cutter and the cutter holder.

[0012] Furthermore, the plurality of guide members are arranged radially along the rotation axis of the drive device; or the plurality of guide members are arranged circumferentially around the rotation axis of the drive device; or the plurality of guide members are arranged circumferentially staggered around the rotation axis of the drive device.

[0013] Preferably, the flying knife cutting device further includes a first rotating ring, and the other end of the cutter is fixed to the first rotating ring; the first rotating ring is arranged around the cutter assembly with the rotation shaft of the driving device as the center;

[0014] The second rotating ring is driven by another driving device to drive the first rotating ring to rotate, such that the angular velocity of the first rotating ring is the same as the angular velocity of the cutter assembly.

[0015] Furthermore, a gear is arranged around the outer periphery of the first rotating ring and a gear is arranged around the outer periphery of the second rotating ring; the first rotating ring and the second rotating ring are driven to rotate by the second rotating ring through gear meshing.

[0016] Furthermore, the support base includes a first fixing plate, a second fixing plate, and a connecting plate. The first fixing plate and the second fixing plate are arranged opposite to each other and connected by the connecting plate. The first fixing plate is provided with a rotating bracket, and the first rotating ring is connected to the first fixing plate through the rotating bracket and can rotate around the rotating bracket.

[0017] Preferably, the flying knife cutting device further includes a cooling device, which includes a cooling box and a cooling medium. The cooling medium is placed inside the cooling box, and the cooling device is used to cool the cutting knife.

[0018] Preferably, the flying knife cutting device further includes a traction device for pulling the item to be cut through the channel; the guide is connected to the traction device to facilitate the item to be cut being guided into the channel.

[0019] Preferably, the flying knife cutting device is further provided with a detection device and a control device. The detection device is used to detect the length of the cut item and feed the length parameter back to the control device. The control device compares the length parameter with the set standard length parameter, and then adjusts the rotation speed of the drive device or the traction speed of the item to be cut according to the comparison result, so that the length of the cut item is consistent with the set standard length parameter.

[0020] Preferably, the flying knife cutting device is further equipped with an alarm device, which includes a sensor, an alarm and a PLC programmable controller. The sensor is used to detect whether there is an object to be cut before the traction device, and transmits a signal that no object is detected to the PLC programmable controller. The PLC programmable controller controls the alarm to sound an alarm based on the signal that no object is detected.

[0021] Preferably, the flying knife cutting device is further equipped with an alarm device, which includes a sensor, an alarm and a PLC programmable controller. The sensor is used to detect whether there is an object to be cut before the traction device, and transmits the detected raw signal to the PLC programmable controller. The PLC programmable controller compares the threshold of the raw signal with the set threshold, and controls the alarm to sound based on the comparison result.

[0022] Preferably, the cutter is a non-stick cutter, a PTFE cutter, or a ceramic cutter.

[0023] The blade of the flying knife cutting device of the present invention can cut multiple items to be cut in multiple guide channels at one time, realizing the cutting of multiple items with one cut, which can greatly improve the cutting efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a 1st embodiment of the flying knife cutting device provided by the present invention;

[0026] Figure 2 This is another structural schematic diagram of Embodiment 1 of the flying knife cutting device provided by the present invention;

[0027] Figure 3 This is another structural schematic diagram of Embodiment 1 of the flying knife cutting device provided by the present invention;

[0028] Figure 4 This is a schematic diagram of a second embodiment of the flying knife cutting device provided by the present invention;

[0029] Figure 5 This is a schematic diagram of a third embodiment of the flying knife cutting device provided by the present invention;

[0030] Figure 6 This is a schematic diagram of a fourth embodiment of the flying knife cutting device provided by the present invention;

[0031] Figure 7 This is a schematic diagram of a fifth embodiment of the flying knife cutting device provided by the present invention;

[0032] Figure 8 This is a schematic diagram of a 6th embodiment of the flying knife cutting device provided by the present invention.

[0033] Explanation of icon numbers:

[0034]

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0039] Example 1

[0040] Please see Figures 1 to 2 The invention discloses an embodiment 1 of the flying knife cutting device, which includes a support base 10, a cutting knife assembly 20, a plurality of guides 30 and a driving device 60.

[0041] The support base 10 includes a first fixing plate 11, a second fixing plate 12, and a connecting plate 13. The first fixing plate 11 and the second fixing plate 12 are arranged opposite to each other and connected by the connecting plate 13. The first fixing plate 11 is provided with a rotating bracket 111, and the first rotating ring 40 is connected to the first fixing plate 11 through the rotating bracket 111 and can rotate around the rotating bracket 111. Of course, the support base 10 can also be other structures known to those skilled in the art, as long as it can provide a certain fixed support function.

[0042] The cutter assembly 20 includes a cutter holder 21 and a cutter 22, with one end of the cutter 22 fixed to the cutter holder 21.

[0043] Each guide 30 is provided with a groove 32 and a channel 31 for passing through the item A to be cut. The cutter 22 can pass through the groove 32 of the guide 30. Multiple guides 30 are provided on the support base 10.

[0044] The guide member 30 passes sequentially through the first fixing plate 11 and the second fixing plate 12. The guide member 30 can be fixedly connected to the first fixing plate 11 and the second fixing plate 12 by bolts, thus facilitating disassembly and replacement. Furthermore, each guide member 30 is provided with a groove 32. The width of the groove 32 must be slightly larger than the thickness of the cutter 22 to prevent the cutter 12 from vibrating or breaking when cutting the item A. The length of the groove 32 can be smaller than the inner diameter of the guide member 30, just enough to allow it to pass through smoothly. This facilitates the cutter 22 passing through the groove 32 of the guide member 30 to cut the item A in the corresponding channel 31. The guide member 30 makes it easier for the item A to enter the channel 31 and prevents the item A from shifting position during traction, thus guiding and limiting the item A.

[0045] The blade holder 21 is fixed to the rotating shaft of the drive device 60; the drive device 60 drives the cutter assembly 20 to rotate, so that the cutter 22 passes through the cutting groove 32 during rotation and cuts the item A to be cut in the corresponding channel 31. It should be noted that the drive device 60 can be a motor, and the motor can be a high-speed servo motor with a speed of 3000-5000 revolutions per minute. High-speed cutting can make the cut of the item A to be cut smoother.

[0046] The cutter 22 of the flying knife cutting device of the present invention can cut multiple items A to be cut in multiple guide members 30 channels 31 at one time, realizing the cutting of multiple items to be cut with one cut, which can greatly improve the cutting efficiency.

[0047] As a further improvement to this embodiment, the flying knife cutting device also includes a first rotating ring 40 and a second rotating ring 50, with the other end of the cutter 22 fixed to the first rotating ring 40. The first rotating ring 40 is arranged around the cutter assembly with the rotation axis of the driving device 60 as the center. The second rotating ring 50 is driven by another driving device to rotate the first rotating ring 40, so that the angular velocity of the first rotating ring 40 is the same as the angular velocity of the cutter assembly 20. This ensures that the two ends of the cutter 22 rotate at the same angular velocity, thereby ensuring that the cutter 22 does not break, shake, or drift, thus ensuring a smooth cut without burrs and improving cutting efficiency.

[0048] In this embodiment, a gear 41 is arranged around the outer periphery of the first rotating ring 40 and the gear 41 is arranged around the outer periphery of the second rotating ring 50; the first rotating ring 40 and the second rotating ring 50 are driven to rotate by the second rotating ring 50 through the meshing of the gear 41.

[0049] As a further improvement of this embodiment, the flying knife cutting device also includes a cooling device 70, which includes a cooling box 71 and a cooling medium. The cooling medium is placed in the cooling box 71. The cooling device 70 is used to cool the cutting knife 22, which can further improve the quality of the cut.

[0050] In this embodiment, in conjunction with reference Figure 1 The cooling box 71 is fixedly connected to the first fixing plate 11 by bolts. Cooling medium is placed inside the cooling box 71 and absorbed by a cooling sponge located within it. A cooling cover plate 72 is also provided on the top of the cooling box 71. When the cutter 22 rotates and passes through the cutting groove 32 to cut the object A in the channel 31, the cutter 22 comes into contact with the cooling sponge in the cooling box 71 that has absorbed the cooling medium, thus cooling the cutter 22 and reducing its temperature, thereby improving the quality of the cut. Specifically, the cooling medium can be water or alcohol. Of course, the cooling device 70 can be installed in other locations on the support base 10, and is not limited to the first fixing plate 11 in this embodiment.

[0051] Of course, the cooling device 70 in this invention is not limited to the above form; any other device that can achieve the cooling effect is acceptable, such as an air-cooled device.

[0052] As a further improvement to this embodiment, the flying knife cutting device also includes a traction device 80, which is used to pull the item to be cut A through the channel 31. The guide 30 is connected to the traction device 80 to facilitate the passage of the item to be cut A into the channel 31. Specifically, the traction device 80 is a pipe traction machine, such as a tracked traction machine. Its specific structure is prior art well known to those skilled in the art, and will not be described in detail in this embodiment. The speed at which the item to be cut A passes through the channel 31 can reach 60-100 meters per minute.

[0053] In this embodiment, the item to be cut, A, can be a pipe, such as a flexible pipe or a rigid pipe. Flexible pipes include medical flexible tubing, heat shrink tubing, etc.; rigid pipes include PVC pipes, PE pipes, etc. Of course, the item to be cut, A, can also be other items besides pipes, and is not limited here. As a further improvement of this embodiment, the flying knife cutting device is also equipped with a detection device and a control device. The detection device is used to detect the length of the item after cutting and feed the length parameter back to the control device. The control device compares the length parameter with the set standard length parameter, and then adjusts the rotation speed of the drive device or the traction speed of the item to be cut according to the comparison result, so that the length of the item after cutting is consistent with the set standard length parameter.

[0054] As a further improvement of this embodiment, the flying knife cutting device is also equipped with an alarm device 90. The alarm device 90 includes a sensor 91, an alarm 92 and a PLC programmable controller. The sensor 91 is used to detect whether there is an item A to be cut before the traction device 80, and transmits the signal that no item is detected to the PLC programmable controller. The PLC programmable controller controls the alarm 92 to sound an alarm based on the signal that no item is detected.

[0055] As a further improvement of this embodiment, the flying knife cutting device is also equipped with an alarm device 90. The alarm device 90 includes a sensor 91, an alarm 92, and a PLC programmable controller. The sensor 91 is used to detect whether there is an object A to be cut before the traction device 80, and transmits the detected raw signal to the PLC programmable controller. The PLC programmable controller compares the threshold of the raw signal with the set threshold, and controls the alarm 92 to sound an alarm based on the comparison result.

[0056] In this embodiment, please refer to Figure 3 The alarm device 90 includes a sensor 91, an alarm 92, and a PLC programmable controller (not shown in the figure). A support plate 93 is fixedly connected to the side of the first fixed plate 11 away from the second fixed plate. The sensor 91 is fixedly connected to the support plate 93 and is set at the entrance of the traction device 80. The sensor 91 is used to detect whether there is an item A to be cut before the traction device 80. When item A is transported, if the sensor 91 can no longer detect item A, the sensor 91 transmits the signal of no detected item to the PLC programmable controller. The PLC programmable controller controls the alarm 92 to sound an alarm based on the signal of no detected item. Alternatively, the sensor 91 can directly transmit the detected raw signal to the PLC programmable controller. The PLC programmable controller compares the threshold of the raw signal with the set threshold and controls the alarm 92 to sound an alarm based on the comparison result.

[0057] In this embodiment, the cutter 22 is preferably a non-stick cutter, a PTFE cutter, or a ceramic cutter, but it can also be any other cutting tool.

[0058] Example 2

[0059] Please see Figure 4 The invention discloses a second embodiment of the flying knife cutting device. This embodiment is similar to the first embodiment, except that the cutter 22' of the cutter assembly 20' is radially arranged along the rotation axis of the drive device 60, and multiple guides 30' are radially arranged along the rotation axis of the drive device 60, so that the cutting line of the cutter 22' can simultaneously cut the items A to be cut on multiple guides 30' during cutting.

[0060] When this flying knife cutting device is working, when the cutter 22' of the cutter assembly 20' rotates to the arrangement position of multiple guides 30', each cutting point in the cutting line of the cutter 22' can simultaneously cut multiple items A to be cut on multiple guides 30'. This can avoid the phenomenon of different lengths and slanted cuts of multiple items A to be cut due to the time difference when they are cut.

[0061] Example 3

[0062] Please see Figure 5 The invention discloses a third embodiment of the flying knife cutting device. This embodiment is similar to the second embodiment, except that the cutting knife assembly 20´´ is arranged radially along the rotation axis of the driving device 60, the cutting knife 22´´ forms a certain angle with the knife holder 21´´, and the angle formed by the arrangement direction of the multiple guides 30´´ and the knife holder 21´´ is the same as the angle formed by the cutting knife 22´´ and the knife holder 21´´.

[0063] When this flying knife cutting device is working, when the cutter 22 of the cutter assembly 20 rotates to the arrangement position of multiple guides 30´´, each cutting point in the cutting line of the cutter 22 can simultaneously cut multiple items A to be cut on multiple guides 30´´. This can avoid the phenomenon of different lengths and beveled cuts of multiple items A to be cut due to the time difference when they are cut.

[0064] Example 4

[0065] Please see Figure 6 This paper discloses Embodiment 4 of the flying knife cutting device of the present invention. This embodiment is similar to Embodiment 1, except that multiple guide members 30 are arranged radially along the rotation axis of the driving device. This can distribute the force points of the cutter 22, avoid the force points of the cutter 22 being located in the same position, and prevent the cutter from breaking.

[0066] Example 5

[0067] Please see Figure 7 The invention discloses a fifth embodiment of the flying knife cutting device. This embodiment is similar to the first embodiment, except that multiple guides 30 are arranged circumferentially around the rotation axis of the drive device, which can solve the problem of multiple force points of the cutter 22 being subjected to force at the same time.

[0068] Example 6

[0069] Please see Figure 8 This invention discloses Embodiment 6 of the flying knife cutting device. This embodiment is similar to Embodiment 1, except that multiple guide members 30 are arranged in a staggered circumferential arrangement around the rotation axis of the drive device. This arrangement not only solves the problem of multiple force points on the cutter 22 being subjected to force simultaneously, but also disperses the force points on the cutter 22, maximizing the service life of the cutter 22.

[0070] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A flying knife cutting device, characterized in that, include: Support base; A cutting assembly includes a blade holder and a cutting blade, one end of which is fixed to the blade holder; Multiple guide members, each of the guide members having a cutting groove and a channel for passing through the item to be cut, the cutter passing through the cutting groove of the guide member, the multiple guide members being disposed on the support base; A driving device, wherein the tool holder is fixed on the rotating shaft of the driving device; The driving device drives the cutter assembly to rotate, so that the cutter passes through the cutting groove and cuts the item to be cut in the corresponding channel during the rotation; The flying knife cutting device further includes a first rotating ring, and the other end of the cutter is fixed on the first rotating ring; the first rotating ring is arranged around the cutter assembly with the rotation shaft of the drive device as the center. The second rotating ring is driven by another driving device to drive the first rotating ring to rotate, such that the angular velocity of the first rotating ring is the same as the angular velocity of the cutter assembly.

2. The flying knife cutting device as described in claim 1, characterized in that, The cutter of the cutter assembly is radially arranged along the rotation axis of the drive device, and the plurality of guide members are radially arranged along the rotation axis of the drive device.

3. The flying knife cutting device as described in claim 1, characterized in that, The cutter assembly is radially arranged along the rotation axis of the drive device. The cutter forms a certain angle with the cutter holder. The arrangement direction of the multiple guide members forms the same angle with the cutter holder as the angle between the cutter and the cutter holder.

4. The flying knife cutting device as described in claim 1, characterized in that, The plurality of guide elements are arranged radially along the rotation axis of the drive device; or The plurality of guide elements are arranged circumferentially around the rotation axis of the drive device; or The plurality of guide elements are arranged in a staggered circumferential manner around the rotation axis of the drive device.

5. The flying knife cutting device as described in claim 1, characterized in that, The first rotating ring is surrounded by gears, and the second rotating ring is surrounded by gears; the first rotating ring and the second rotating ring are driven to rotate by the second rotating ring through gear meshing.

6. The flying knife cutting device as described in claim 1, characterized in that, The support base includes a first fixing plate, a second fixing plate, and a connecting plate. The first fixing plate and the second fixing plate are arranged opposite to each other and connected by the connecting plate. The first fixing plate is provided with a rotating bracket. The first rotating ring is connected to the first fixing plate through the rotating bracket and can rotate around the rotating bracket.

7. The flying knife cutting device as described in any one of claims 1 to 6, characterized in that, The flying knife cutting device also includes a cooling device, which includes a cooling box and a cooling medium. The cooling medium is placed inside the cooling box, and the cooling device is used to cool the cutting knife.

8. The flying knife cutting device as described in any one of claims 1 to 6, characterized in that, The flying knife cutting device also includes a traction device for pulling the object to be cut through the channel; the guide is connected to the traction device to facilitate the object to be cut being guided into the channel.

9. The flying knife cutting device as described in any one of claims 1 to 6, characterized in that, The flying knife cutting device is also equipped with a detection device and a control device. The detection device is used to detect the length of the cut item and feed the length parameter back to the control device. The control device compares the length parameter with the set standard length parameter, and then adjusts the rotation speed of the drive device or the traction speed of the item to be cut according to the comparison result, so that the length of the cut item is consistent with the set standard length parameter.

10. The flying knife cutting device as described in claim 8, characterized in that, The flying knife cutting device is also equipped with an alarm device, which includes a sensor, an alarm and a PLC programmable controller. The sensor is used to detect whether there is an object to be cut before the traction device, and transmits the signal that no object is detected to the PLC programmable controller. The PLC programmable controller controls the alarm to sound based on the signal that no object is detected.

11. The flying knife cutting device as described in claim 8, characterized in that, The flying knife cutting device is also equipped with an alarm device, which includes a sensor, an alarm and a PLC programmable controller. The sensor is used to detect whether there is an object to be cut before the traction device, and transmits the detected raw signal to the PLC programmable controller. The PLC programmable controller compares the threshold of the raw signal with the set threshold, and controls the alarm to sound based on the comparison result.

12. The flying knife cutting device as described in any one of claims 1 to 6, characterized in that, The cutter is a non-stick cutter.

13. The flying knife cutting device as described in any one of claims 1 to 6, characterized in that, The cutter is a PTFE cutter or a ceramic cutter.

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