Rotary cutting device and system thereof

Abstract

The utility model discloses a rotary cutting device and a system thereof, and belongs to the technical field of biological tissue removal, the rotary cutting device comprises a shell, a first shaft body is arranged in the shell, a first sleeve body is arranged on the first shaft body, and the first shaft body rotates to drive a gear shaper and the first sleeve body to move relative to the axis of the first shaft body. By means of the device, it can be guaranteed that biological tissue is effectively cut off, the problem that in the operation process, the uterine cavity collapse phenomenon is likely to occur is solved, and the operation risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biological tissue removal, and particularly relates to a rotary cutting device and a system thereof. Background Art

[0002] Many surgical procedures require the removal of tissue or fluid material from the surgical site of a patient's body. The removal process is often carried out by using suction. For example, in endoscopic surgery, a cutting or crushing device is commonly used to damage the target tissue, and then a surgical suction device is used to suck out the removed tissue or fluid. Common suction devices include a suction head connected to a suction tube, and the suction tube is further connected to a wall-mounted suction unit, etc. A common problem encountered in the actual use of such devices is the blockage of the suction head or the suction tube, which can lead to a reduction or loss of suction. The blockage may occur because solid particles impede the flow through the suction head or the suction tube. Further, during endoscopic surgery, the doctor controls the drive system to drive the cutting device to work through a foot switch. When the foot is released, the cutting device and the drive system stop working. In the actual clinical operation of existing rotary cutting instruments, when the operator stops the power, the cutting edge of the cutting device has a relatively high probability of not closing. This situation can cause some fillings in endoscopic surgery to be quickly sucked away and not replenished in time, increasing the surgical risk. However, there is no relevant solution in the prior art for how to solve the problem of the relatively high probability of the cutting edge of the cutting device not closing. Summary of the Invention

[0003] The purpose of the utility model is to provide a rotary cutting device and a system thereof. The device of the utility model can ensure the effective resection of biological tissue, solve the problem of easy occurrence of uterine cavity collapse during the operation, and reduce the surgical risk.

[0004] To solve the above technical problems, the present invention specifically provides the following technical solutions:

[0005] To solve the above technical problems, the utility model specifically provides the following technical solutions: A rotary cutting device includes a housing, a first shaft body is disposed inside the housing, a first sleeve body is arranged on the first shaft body, the rotation of the first shaft body can drive the insert teeth and the first sleeve body to displace relative to the axis of the first shaft body, and a detection module for detecting the displacement of the first sleeve body is provided on the housing. The detection module is disposed on the side of the extreme displacement position of the first sleeve body for detecting whether the first sleeve body reaches the extreme position. By setting the detection module to detect the position of the first sleeve body, and then judging whether the cutting edge is in a closed state or an open state during the operation, and according to the obtained information feedback control, the control system further issues an operation instruction.

[0006] According to an embodiment of the present utility model, the detection module includes a travel switch and a position detector. The travel switch and the position detector are integrated on a circuit board body. The travel switch and the position detector are used to obtain the position information of the first set and information feedback. Specifically, after the operator stops operating, the control system receives a stop signal. At the same time, the control system detects whether the travel switch is closed, that is, whether the first set is displaced to the extreme displacement position to cause the travel switch to close. If the travel switch is closed, the first shaft body and its corresponding components stop operating. At this time, the cutting edge of the tool body is in a closed state. If it is not in a closed state, the control system controls the first shaft body and its corresponding components to continue operating until the travel switch is closed. In this way, the cutting edge of the tool body is in a closed state every time the operator stops operating.

[0007] It should be noted that the detection module in the present utility model includes but is not limited to a travel switch and a position detector, and may also be other devices capable of obtaining the position information of the first set.

[0008] According to an embodiment of the present utility model, a fixing component for installing the detection module is provided on the inner wall of the housing. The fixing component includes a second limiting plate connected to the inner wall of the housing, and a slot for inserting the detection module is provided on the second limiting plate. The fixing component is used to install and fix the detection module, so that the detection module can work effectively at the set position continuously. Especially for the detection module to cooperate with the first set frequently to trigger the travel switch, the position stability of the detection module is crucial for the accuracy of the obtained data. Therefore, a slot is provided on the second limiting plate of the fixing component to insert and assemble the detection module to avoid or prevent the loosening of the detection module. Of course, during actual assembly, glue can be dot-applied between the detection module installed in the slot and the slot to make the connection between the two closer.

[0009] Considering the installation stability of the detection module, it is preferable to use two second limiting plates to improve the installation stability effect of the detection module on the second limiting plate.

[0010] According to an embodiment of the present utility model, the fixing component further includes a first limiting plate connected to the inner wall of the housing. There are at least two first limiting plates. The second limiting plate is fixed to the housing between the first limiting plates. The detection module is inserted into the second limiting plate, and then the first limiting plates on both sides of the second limiting plate are used to limit the side of the detection module. Specifically, the total length of the circuit board of the detection module is less than or equal to the distance between the two first limiting plates. In this way, after the detection module is inserted into the second limiting plate, it is limited by the insertion limit and the abutting limit of the first limiting plates on both sides, reducing the probability of the detection module loosening or displacing. And this design method makes there be a certain interval distance between the detection module and the housing. On the one hand, the influence of the housing direction on the detection module is reduced. For example, the relatively high heat or temperature outside the housing is less likely to be transmitted to the inside of the housing and affect the detection module. On the other hand, if the housing is damaged, the first limiting plate and the second limiting plate can be used to absorb the destructive force, reducing the probability of the detection module being damaged, and the first limiting plate and the second limiting plate play a protective role for the detection module.

[0011] A third limiting plate is provided on the inner wall of the housing, and the horizontal height of the third limiting plate is lower than that of the first limiting plate and the second limiting plate. The third limiting plate is provided to increase the contact area with the detection module and improve the stable effect of the limit on it.

[0012] According to an embodiment of the present utility model, the first shaft body has two spiral channels, and the first sleeve body is internally provided with inserted teeth that are matched with the spiral channels. When the first shaft body rotates, it can drive the inserted teeth to continuously move back and forth on its spiral channels, and then drive the continuous back and forth displacement of the first sleeve body through the displacement of the inserted teeth.

[0013] According to an embodiment of the present utility model, the two spiral channels are arranged with opposite helix directions, and the respective ends of the two spiral channels are smoothly mixed together to form a continuous groove, which can enable the inserted teeth to smoothly transition from one spiral channel to the other spiral channel. The two spiral channels are respectively a left spiral channel and a right spiral channel, and the pitches of these two spiral channels can be the same pitch or different pitches. Preferably, the pitches of the two spiral channels are the same.

[0014] According to an embodiment of the present utility model, the insertion width range of the insert tooth is 1 mm - 5 mm. The spiral channel within this range value can avoid the possibility of the reciprocating structure between the insert tooth or the spiral channel breaking during the resection of biological tissue, that is, ensure the strength of the spiral channel and the insert tooth during high-speed operation, and provide effective output for the tool body. For the tissue cutting at the blade edge, when the tissue hardness is too high and there is a possibility of blade cutting jamming, the spiral channel within the above range value and the insert tooth of the corresponding size can cooperate to provide strong output for tissue cutting. On the contrary, if the spiral channel and the insert tooth of the corresponding size are not within the above range value, when facing the situation of too hard cutting tissue, the reciprocating structure between the insert tooth or the spiral channel may break, resulting in the equipment being unable to cut the tissue normally and the first sleeve body being unable to displace to the set position after the equipment stops.

[0015] According to an embodiment of the present utility model, the insert tooth is connected to a first rod body. The axis of the first rod body is parallel to the axis of the first shaft body. When the insert tooth displaces, it can drive the first rod body to displace synchronously; preferably, the end of the first rod body is connected to the front section of the cutter tube. The insert tooth is rotatably connected to the first rod body to provide the forward and backward reciprocating movement force for the tool body to cut.

[0016] According to an embodiment of the present utility model, the surface of the first rod body is provided with a toothed structure. One side of the first rod body is provided with a matching transmission component. The transmission component has a transmission main shaft coaxially connected to the first shaft body. The outer side of the transmission main shaft has transmission teeth matching with the toothed structure of the first rod body to provide the rotational power for the tool body to cut.

[0017] A rotary cutting system is applied to a rotary cutting device.

[0018] Compared with the prior art, the present utility model has the following beneficial effects: The uppermost position of the first shaft body of the present utility model is the displacement limit position of the first sleeve body. A detection module is arranged here to judge whether the blade edge is in a closed state when the operator stops the power during the operation. By setting the detection module to detect the position of the first sleeve body, it is further judged whether the blade edge is in a closed state or an open state during the operation. According to the obtained information feedback control, the control system further issues an operation instruction. If it is judged that the blade edge is not closed, the first shaft body is controlled to continue to rotate to drive the first sleeve body to displace to the limit position to close the blade edge, preventing the blade edge from remaining open and the uterine dilatation fluid from being quickly aspirated and discharged. If it is judged that the blade edge is in a closed state, the control system does not issue an instruction. In this way, while ensuring the effective resection of biological tissue, the problem of easy occurrence of uterine cavity collapse during the operation can be solved, and the operation risk can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0020] Figure 1 This is a schematic diagram of the internal structure of a rotary cutting device of the present invention;

[0021] Figure 2 This is a front view of the internal structure of a rotary cutting device of the present invention;

[0022] Figure 3 This is a schematic diagram of the shell structure of the utility model;

[0023] Figure 4 For the utility model Figure 3 Partial enlarged view of part b in the middle;

[0024] Figure 5 For the utility model Figure 1 A partial enlarged view of part a in the middle;

[0025] Figure 6 This is a schematic diagram of the operation of the components of a rotary cutting device of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection scheme between the first shaft body, the first sleeve body, the transmission assembly and the first rod body of the present invention;

[0027] Figure 8 This is a schematic diagram of the first shaft and the gear matching state of the present invention;

[0028] Figure 9 For the utility model Figure 8 A partial enlarged view of part c in the middle.

[0029] Explanation of the accompanying drawings: 10. Housing; 11. First plate; 12. Insert sleeve; 20. First sleeve; 21. Insert gear; 30. Knife barrel; 31. First rod; 40. Transmission assembly; 41. Transmission spindle; 42. Transmission gear; 50. Fixing assembly; 51. Connecting line; 52. Third limit plate; 53. First limit plate; 54. Second limit plate; 55. Detection module; 60. First shaft; 61. Spiral channel; 70. Front section of knife barrel; 71. Assembly set. DETAILED DESCRIPTION

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] First, the concepts involved in the present application will be described in conjunction with the accompanying drawings. It should be noted here that the descriptions of the following concepts are only for making the content of the present application easier to understand, and do not represent a limitation on the protection scope of the present application; at the same time, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0032] Embodiment 1

[0033] In actual use, the doctor in the operating room controls the rotation of the cutter body through a foot switch, that is, controls the operation or stop of each component in the control device. When the foot is released, the cutter body stops the rotary cutting action. In this case, the phenomenon that the knife edge does not close may occur. This situation will cause the expansion solution to be quickly sucked away. If it cannot be replenished in time, it will cause the phenomenon of uterine cavity collapse in the uterine cavity, increasing the surgical risk. Therefore, the present invention provides a rotary cutting device. As Figures 1-9 shown, a rotary cutting device includes a housing 10. A first shaft body 60 is disposed inside the housing 10. A first sleeve body 20 is arranged on the first shaft body 60. The rotation of the first shaft body 60 can drive the pinion 21 and the first sleeve body 20 to displace relative to the axis of the first shaft body 60. A detection module 55 for detecting the displacement of the first sleeve body 20 is provided on the housing 10. The detection module 55 is disposed on the side of the extreme displacement position of the first sleeve body 20 for detecting whether the first sleeve body 20 reaches the extreme position.

[0034] Generally, the first sleeve body 20 can drive the cutter body to rotate and displace. When the first sleeve body 20 is at the uppermost end of the first shaft body 60, the knife edge is in a closed state. Therefore, the uppermost position of the first shaft body 60 is the extreme displacement position of the first sleeve body 20. Setting the detection module 55 here can judge whether the knife edge is in a closed state when the operator stops the power during the operation. By setting the detection module 55 to detect the position of the first sleeve body 20, it can be further judged whether the knife edge is in a closed state or an open state during the operation. According to the obtained information feedback control, the control system further issues an operation instruction. If it is judged that the knife edge is not closed, the first shaft body 60 is controlled to continue to rotate to drive the first sleeve body 20 to displace to the extreme position to close the knife edge, preventing the knife edge from continuously opening and the expansion solution from being quickly sucked and discharged. If it is judged that the knife edge is in a closed state, the control system does not issue an instruction. In this way, while ensuring the effective resection of biological tissues, the problem of easy uterine cavity collapse during the operation can be solved, and the surgical risk can be reduced.

[0035] The detection module 55 includes a travel switch and a position detector. The travel switch and the position detector are integrated on a circuit board body. The travel switch and the position detector are used to obtain the position information of the first set body 20 and information feedback. Specifically, after the operator stops operating, the control system receives a stop signal. At the same time, the control system detects whether the travel switch is closed, that is, whether the first set body 20 is displaced to the extreme displacement position to cause the travel switch to close. If the travel switch is closed, the first shaft body 60 and its corresponding components stop operating. At this time, the cutting edge of the tool body is in a closed state. If it is not in a closed state, the control system controls the first shaft body 60 and its corresponding components to continue operating until the travel switch is closed. In this way, the cutting edge of the tool body is in a closed state every time the operator stops operating.

[0036] It should be noted that the detection module 55 in the present invention includes, but is not limited to, a travel switch and a position detector, and may also be other devices capable of obtaining the position information of the first set body 20.

[0037] A fixing component 50 for installing the detection module 55 is provided on the inner wall of the housing 10. The fixing component 50 includes a second limiting plate 54 connected to the inner wall of the housing 10. The second limiting plate 54 is provided with a slot for inserting the detection module 55. The fixing component 50 is used to install and fix the detection module 55, so that the detection module 55 can work effectively at the set position continuously. Especially for the detection module 55 to cooperate with the first set body 20 frequently to trigger the travel switch, the position stability of the detection module 55 is crucial for the accuracy of the obtained data. Therefore, a slot is provided on the second limiting plate 54 of the fixing component 50 to insert and assemble the detection module 55 to avoid or prevent the loosening of the detection module 55. Of course, during actual assembly, glue can be dot-applied between the detection module 55 installed in the slot and the slot to make the connection between the two closer.

[0038] Considering the installation stability of the detection module 55, it is preferable to use two second limiting plates 54 to improve the installation stability effect of the detection module 55 on the second limiting plate 54.

[0039] The fixing component 50 further includes a first limiting plate 53 connected to the inner wall of the housing 10. There are at least two first limiting plates 53. The second limiting plate 54 is fixed to the housing 10 between the first limiting plates 53. The detection module 55 is inserted into the second limiting plate 54, and then the first limiting plates 53 on both sides of the second limiting plate 54 are used to limit the side of the detection module 55. Specifically, the total length of the circuit board of the detection module 55 is less than or equal to the distance between the two first limiting plates 53. After the detection module 55 is inserted into the second limiting plate 54, it is limited by the insertion and the abutting limit of the first limiting plates 53 on both sides, reducing the probability of the detection module 55 loosening or displacing. And such a design method makes the detection module 55 have a certain distance from the housing 10. On the one hand, the influence of the detection module 55 by the housing 10 is reduced, such as the reduction of the influence of the higher heat or temperature outside the housing 10 on the detection module 55 inside the housing 10. On the other hand, if the housing 10 is damaged, the first limiting plate 53 and the second limiting plate 54 can be used to absorb the destructive force and reduce the probability of the detection module 55 being damaged, playing a protective role for the detection module 55 by the first limiting plate 53 and the second limiting plate 54.

[0040] A third limiting plate 52 is provided on the inner wall of the housing 10. The horizontal height of the third limiting plate 52 is lower than that of the first limiting plate 53 and the second limiting plate 54. The third limiting plate 52 is provided to increase the contact area with the detection module 55 and improve the stable effect of its limitation.

[0041] The broaching tooth 21 is connected with a first rod body 31. The axis of the first rod body 31 is parallel to the axis of the first shaft body 60. When the broaching tooth 21 displaces, it can drive the first rod body 31 to displace synchronously. Preferably, the end of the first rod body 31 is connected with the front section 70 of the cutter tube. The broaching tooth 21 is rotatably connected with the first rod body 31, which is used to provide the forward and backward reciprocating movement force for the cutting of the tool body. At the same time, the above design saves unnecessary parts compared with the prior art and optimizes the installation space inside the housing.

[0042] The tissue cutting scheme in the present invention is the prior art, specifically the tissue cutting scheme provided in the prior art CN 102438534 A. The inner part of the front section 70 of the cutter tube has an inner tubular component, and a window is provided at the port of the front section 70 of the cutter tube. The transmission component 40 of the present device can drive the first rod body 31 to rotate, and the first shaft body 60 cooperates with the broaching tooth 21 to drive the first rod body 31 to move linearly back and forth. In this way, the forward and backward reciprocating linear movement force and the rotary cutting force for cutting are provided for the tool body, so that the tool body rotates according to the set speed law and cuts the target tissue into pieces. The specific cutting tool body scheme is not described in detail in this article.

[0043] The surface of the first rod body 31 is provided with a toothed structure. On one side of the first rod body 31, a transmission component 40 is arranged in cooperation with it. The transmission component 40 has a transmission main shaft 41 coaxially connected to the first shaft body 60. On the outside of the transmission main shaft 41, there is a transmission tooth 42 that cooperates with the toothed structure of the first rod body 31 to provide the rotational power for the cutting of the tool body. The gear transmission speed increase ratio is preferably 41:15, increasing the rotational speed of the power end and outputting it to the cutting edge, so that the cutting edge can perform a reciprocating translational motion while rotating.

[0044] In this embodiment, when the tool body rotates one circle, the forward length is 5 mm, and the forward ratio is 5.

[0045] A rotary cutting system is applied to a rotary cutting device.

[0046] Embodiment 2:

[0047] In this embodiment, the first shaft body 60 can be connected to a driving device outside the housing 10 to drive the first shaft body 60 to rotate. The driving device can be a motor, a driving motor, etc., and its input rotational speed is at least 1000 r / min or more, and preferably 1750 r / min in this embodiment.

[0048] A coupling can be provided at the connection between the first shaft body 60 and the driving device outside the housing 10 to connect the two. In this embodiment, a first plate body 11 is provided on the housing 10. The first plate body 11 has a groove for accommodating the first shaft body 60. On one side of the first plate body 11, structures such as rubber strips can be provided at the contact of the components in the direction of the first shaft body 60 to reduce the friction between the components or fill the gaps between the components. At the same time, the above design saves unnecessary components compared with the prior art and optimizes the installation space inside the housing.

[0049] The other side of the first plate body 11 is connected to the housing 10 to make the first plate body 11 in a fixed state. When the device is in use, the first plate body 11 can provide effective support for the components in contact with it. The first plate body 11 is preferably perpendicular to the housing 10. The depth of the groove on the first plate body 11 is selected according to the size of the components arranged in cooperation with it. Specifically, it is necessary to achieve the installation size or position of the components to meet the set requirements. In addition, the first plate body 11 can keep the positional relationship between the first shaft body 60 and the housing 10 stable.

[0050] Of course, the first plate body 11 is not limited to the installation of the components of the first shaft body 60, and can also be used for the installation of other components inside the housing 10. For example, the first plate body 11 can be used for the installation of the transmission component 40, so that it is assembled on the housing 10 and is coaxial with the driving part connected to the first shaft body 60. Another example is that the first plate body 11 can realize the installation of the first rod body 31, so that the axis of the first rod body 31 is parallel to the axis of the first shaft body 60.

[0051] For the material of the first plate body 11, it is preferably made of polyethylene or rubber to reduce the overall weight and manufacturing cost of the equipment. For special usage scenarios or requirements, the first plate body 11 made of other materials can be selected.

[0052] Example 3:

[0053] In this embodiment, referring to the appendix Figure 1 、 Figure 4 As shown, the housing 10 is provided with a socket 12 structure. The housing 10 has another housing, and the structure of the other housing corresponds to that of the housing 10. However, the socket position structure of the other housing is a plug structure, and the plug structure is adapted to the socket on the housing 10, and the two can be plugged and disassembled.

[0054] Example 4:

[0055] In this embodiment, referring to the appendix Figure 1 As shown, one end of the first sleeve body 20 is connected to a cutter tube 30. The cutter tube 30 is coaxially arranged with the first rod body 31, and the cutter tube 30 is communicated with the front section 70 of the cutter tube.

[0056] Example 5:

[0057] In this embodiment, referring to the appendix Figures 1-9 As shown, the first shaft body 60 is provided with two spiral channels 61. The first sleeve body 20 is internally provided with inserts 21 that are arranged to match the spiral channels 61. When the first shaft body 60 rotates, it can drive the inserts 21 to continuously move back and forth on its spiral channels 61, and further drive the first sleeve body 20 to continuously move back and forth through the displacement of the inserts 21.

[0058] The reciprocating movement length of the inserts 21 is 10 mm - 20 mm, and in this embodiment, it is preferably 15.2 mm.

[0059] The two spiral channels 61 are arranged with opposite helix directions. The smooth ends of the two spiral channels 61 are mixed together to form a continuous groove, which can enable the inserts 21 to smoothly transition from one spiral channel 61 to the other. The two spiral channels 61 are respectively a left spiral channel and a right spiral channel, and the pitches of these two spiral channels 61 can be the same pitch or different pitches. Preferably, the pitches of the two spiral channels 61 are the same.

[0060] The insertion width range of the insert tooth 21 is 1 mm - 5 mm. Within this range value, the spiral channel 61 can avoid the possibility of the reciprocating structure between the insert tooth 21 or the spiral channel 61 breaking during the excision of biological tissue, that is, ensure the strength of the spiral channel 61 and the insert tooth 21 during high-speed operation, and provide effective output for the tool body. For cutting tissue at the cutting edge, during the operation, the rotary cutting speed value of the tool body is 2000 r / min or above. Generally, considering safety and other factors, the tool body rotation speed value is selected as 5000 r / min. If the tissue hardness is too high or there is a possibility of cutting jamming at the cutting edge during long-term cutting, it will lead to the incomplete cutting of biological tissue and easily instantaneously increase the cutting resistance of the cutting edge. Therefore, the spiral channel 61 within the above range value in cooperation with the insert tooth 21 of the corresponding size can provide strong output for tissue cutting. On the contrary, for the spiral channel 61 and the insert tooth surface of the corresponding size outside the above range value, when cutting hard tissue, there may be a situation where the reciprocating structure between the insert tooth 21 or the spiral channel 61 breaks, resulting in the equipment being unable to cut the tissue normally and the first set body 20 being unable to be displaced to the set position after the equipment stops.

[0061] In this embodiment, 8 groups of experimental groups are set up to conduct biological tissue excision experiments on different sizes of insert teeth 21 and different excision rate and other parameters. Duck gizzards are selected as the biological tissue. The specific experimental parameters and results are shown in Table 1 and Table 2 below.

[0062]

[0063] Table 1

[0064]

[0065] Table 2

[0066] Through the biological tissue excision experiment, it can be known that when the insertion width of the insert teeth of this device is 1 - 5 mm, it can effectively prevent the reciprocating structure of the spiral channel from breaking and avoid or reduce the possibility of blockage.

[0067] In this article, specific examples are used to elaborate on the principle and implementation method of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. The above is only the preferred implementation method of this application. It should be noted that due to the limited nature of text expression and objectively existing infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as the protection scope of this application.

Claims

1. A rotary cutting device, comprising a housing (10), a first shaft body (60) is disposed inside the housing (10), a first sleeve body (20) is arranged on the first shaft body (60), and rotation of the first shaft body (60) can drive the gear shaper (21) and the first sleeve body (20) to displace relative to the axis of the first shaft body (60), characterized in that: A detection module (56) for detecting the displacement of the first sleeve body (20) is provided on the housing (10).

2. The rotary cutting device according to claim 1, characterized in that, The detection module (56) includes a travel switch and a position detector.

3. The rotary cutting device according to claim 1, wherein, A fixing component (50) for mounting the detection module (56) is provided on the inner wall of the housing (10). The fixing component (50) includes a second limiting plate (54) connected to the inner wall of the housing (10), and a slot for inserting the detection module (56) is provided on the second limiting plate (54).

4. The rotary cutting device according to claim 3, wherein The fixing component (50) further includes a first limiting plate (53) connected to the inner wall of the housing (10). There are at least two first limiting plates (53). The second limiting plate (54) is fixed to the housing (10) between the first limiting plates (53). A third limiting plate (55) is provided on the inner wall of the housing (10), and the horizontal height of the third limiting plate (55) is lower than that of the first limiting plate (53) and the second limiting plate (54).

5. A rotary cutting device according to claim 1, characterized in that, Two spiral channels (63) are provided on the first shaft body (60), and insert teeth (21) matched with the spiral channels (63) are arranged inside the first sleeve body (20).

6. A rotary cutting device according to claim 5, characterized in that, The two spiral channels (63) are arranged with opposite helix directions. The ends of the two spiral channels (63) are smoothly mixed together to form a continuous groove, which can enable the insert teeth (21) to smoothly transition from one spiral channel (63) to another.

7. A rotary cutting device according to claim 5, characterized in that, The insertion width range of the insert teeth (21) is 2 mm - 2.5 mm.

8. A rotary cutting device according to claim 5, characterized in that, The insert teeth (21) are connected with a first rod body (32). The axis of the first rod body (32) is arranged parallel to the axis of the first shaft body (60). When the insert teeth (21) are displaced, the first rod body (32) can be synchronously driven to displace. The end of the first rod body (32) is connected with the front section of the cutter tube (70).

9. A rotary cutting device according to claim 8, characterized in that, A tooth-shaped structure is provided on the surface of the first rod body (32). A transmission component (40) is provided on one side of the first rod body (32) and is matched with it. The transmission component (40) has a transmission main shaft (41) coaxially connected to the first shaft body (60), and a transmission tooth (42) matched with the tooth-shaped structure of the first rod body (32) is arranged on the outside of the transmission main shaft (41).

10. A veneer cutting system, characterized in that, The rotary cutting system is applied to the rotary cutting device described in Claim 1.

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