A pipe cutting machine for cutting insulating sleeves

Abstract

The present invention relates to the field of casing cutting technology, in particular to a pipe cutting machine for insulating casing cutting, comprising a pipe cutting action actuator, a casing positioning tool and a switching slide rail, wherein an annular segmented surface cutting component and a cutting end separation debugging mechanism are installed at the bottom of the pipe cutting action actuator, wherein the annular segmented surface cutting component is used to apply cutting pressure when the insulating casing is cut through at multiple points locally; after the contact-guided cutting blade reaches the restricted position of the point interception sensing seat, it still maintains the cutting angle after penetrating the casing, at which time the contact-guided cutting blade that maintains a fixed cutting angle after eccentric movement is smaller than the penetrating cutting surface formed by the casing, so that when the pipe cutting action actuator controls the contact-guided cutting blade to reset and lift, the contact surface of the casing's completed cutting point is reduced, so that the cutter head is easier to cut the casing until it is completely separated, and at the same time, the cutting point is prevented from deviating from the original set cutting point interval length under the cutting action of the secondary lifting when the contact-guided cutting blade is reset.

Description

Technical Field

[0001] The invention relates to the technical field of casing cutting, in particular to a pipe cutting machine for cutting insulating casing. Background Art

[0002] Insulating casing is mainly divided into soft tube (leather tube, soft rubber tube or polyolefin heat shrink tube) and hard tube (stainless steel or ceramic hard tube). Among them, when producing soft tube with fixed length requirement, in order to facilitate the transportation of segmented casing, the traditional pipe cutting process is mainly divided into two steps. The first step is to perform multi-point and small-pitch through-cutting along the outer circumference of the pipe to form a cutting surface on the outer circumference of the casing. After the cutting is completed, the casing can still be rolled up in a centralized manner. At the same time, when used on site, the cutting surface formed along the outer circumference of the casing can be pulled to directly separate the required single-section segmented casing. The second step is to cut off the entire end of the casing after the current multi-segment casing reaches the required winding specifications. In the above steps, the technical problem is that after the existing pipe cutting machine cutter head performs multi-point and small-pitch through-cutting along the outer circumference of the pipe, spacing is formed between the multiple cutting points, and the casing as a whole is in an incompletely disconnected state. In the current state, the following problems will occur when the cutter head is reset and lifted along the cutting path: 1. When the cutter head is reset and lifted along the cutting path, each cutting point of the casing will be subject to the secondary cutting force generated when the cutter head is lifted. At this time, the cutting spacing between each through-cutting point will be reduced again due to the cutting effect, that is, it deviates from the original set cutting point interval length. 2. When the cutter head is reset and lifted along the cutting path, due to the large number of cutting points set, the contact surface between the cutter head and each through-cutting layer of the casing is large, and a large friction force will be generated when it is lifted back. Therefore, the cutter head and the casing cutting point are often not completely separated, affecting the processing continuity. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a pipe cutting machine for cutting insulating sleeves.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a pipe cutting machine for cutting insulating sleeves, including a pipe cutting action actuator, a sleeve positioning tool and a switching slide rail. An annular segmented surface cutting component and a cutting end disengagement debugging mechanism are installed at the bottom of the pipe cutting action actuator. The annular segmented surface cutting component is used to apply cutting pressure when performing local multi-point through-cutting of the insulating sleeve. After the annular segmented surface cutting component completes the through-cutting of the insulating sleeve, it is covered to the surface of the insulating sleeve through the cutting end disengagement debugging mechanism, which is used to support the insulating sleeve when the annular segmented surface cutting component is cut and returned to its position, ensuring that the annular segmented surface cutting component is completely separated from the through-cutting position of the insulating sleeve.

[0005] The annular segmented surface cutting assembly includes a through cutting groove, a contact guide cutting blade, an eccentric cutting transmission shaft, a point interception sensing seat and an electromagnetic locking telescopic part. The through cutting groove is installed at the output end of the tube cutting action actuator, the contact guide cutting blade is arranged in the inner cavity of the through cutting groove, the through cutting groove is installed with an eccentric cutting transmission shaft, the contact guide cutting blade realizes rotation with the through cutting groove through the eccentric cutting transmission shaft, the electromagnetic locking telescopic part is used for locking the contact guide cutting blade after eccentric movement, the point interception sensing seat is used to limit the maximum movement angle of the contact guide cutting blade during rotation, and after the contact guide cutting blade reaches the limit position, the point interception sensing seat triggers the electromagnetic locking telescopic part to send a locking control signal to the contact guide cutting blade, so that the contact guide cutting blade still maintains the current through cutting angle after reaching the limit position.

[0006] Preferably, the eccentric cutting transmission shaft comprises an eccentric cutting transmission shaft, a non-locking reset connection portion and a fixed lug, the fixed lug is fixedly connected to the outer wall of the through-cutting groove member, the eccentric cutting transmission shaft passes through the through-cutting groove member and is rotatably connected to the through-cutting groove member, one end of the eccentric cutting transmission shaft is fixedly connected to the contact guide cutting blade, and the non-locking reset connection portion is installed between the eccentric cutting transmission shaft and the fixed lug.

[0007] Preferably, the cutting end disengagement debugging mechanism includes an extension flattening hydraulic cylinder, a cutting point positioning pressure plate and a disengagement control signal generating component. The extension flattening hydraulic cylinder is installed at the output end of the pipe cutting action actuator, and the cutting point positioning pressure plate is fixedly connected to the output end of the extension flattening hydraulic cylinder. A disengagement control signal generating component is fixedly connected to one side of the cutting point positioning pressure plate. The disengagement control signal generating component is used to sense whether the current flattening position of the cutting point positioning pressure plate is in contact with the insulating sleeve.

[0008] Preferably, the disengagement control signal generating component includes a disengagement pressure sensing unit and a one-way signal transmission unit, the disengagement pressure sensing unit is signal-connected to the one-way signal transmission unit, the one-way signal transmission unit is signal-connected to the tube cutting action actuator, and the tube cutting action actuator controls the contact-guided cutting blade to complete the resetting action after through-cutting through the flat pressure completion signal reflected by the one-way signal transmission unit.

[0009] Preferably, the point-to-point interception sensing seat is fixedly connected to the inner side of the center-through cutting groove, and the electromagnetic locking telescopic part is installed on the outer side of the center-through cutting groove. The point-to-point interception sensing seat is signal-connected with the electromagnetic locking telescopic part, and the output end of the electromagnetic locking telescopic part passes through the center-through cutting groove and extends to the inner side of the center-through cutting groove, and the output end of the electromagnetic locking telescopic part is engaged and connected with the contact guide cutting blade.

[0010] Preferably, a split-end tube cutting assembly is also installed at the bottom output end of the tube cutting action actuator, and the split-end tube cutting assembly does not contact the center-through cutting groove component. The tube cutting action actuator is used to switch the tube cutting application status of the center-through cutting groove component and the split-end tube cutting assembly, and drive the center-through cutting groove component or the split-end tube cutting assembly to complete the cutting of the insulating sleeve.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. After the casing positioning tool fixes the casing, the central cutting groove is driven to move toward the casing by the casing cutting action actuator, so that the contact guide cutting blade slides along the corresponding cutting point on the outside of the casing under the action of pressure, and then dynamic cutting pressure is applied to the cutting surface, and the cutting surface is penetrated along the corresponding cutting point spacing, until the contact guide cutting blade rotates to the maximum movement angle limited by the point interception sensing seat, and the point interception sensing seat triggers the locking control signal of the electromagnetic locking telescopic part to the contact guide cutting blade, so that the contact guide cutting blade reaches the limit position of the point interception sensing seat, and still maintains the cutting angle after penetrating the casing. At this time, the contact surface of the contact guide cutting blade that maintains a fixed cutting angle after eccentric movement is smaller than the penetrating cutting surface formed by the casing, so that the contact surface of the completed cutting point of the casing is reduced when the casing cutting action actuator controls the contact guide cutting blade to reset and lift, so that the cutter head is easier to cut and completely separate from the casing, and at the same time, the cutting point is prevented from deviating from the original set cutting point interval length under the cutting action of the secondary lifting when the contact guide cutting blade is reset.

[0013] 2. After the pipe cutting action actuator drives the contact-guided cutting blade to press down to achieve eccentric motion cutting, the flat-pressing hydraulic cylinder is extended to control the cutting point positioning pressure plate to press down to the front end position of the casing cutting point. When the cutting point positioning pressure plate is pressed down, the disengagement control signal generating component senses whether the current flat-pressing position of the cutting point positioning pressure plate is in contact with the insulating casing. When it is in contact, the sensing signal obtained by the disengagement control signal generating component is sent to the pipe cutting action actuator to control the pipe cutting action actuator to automatically control the contact-guided cutting blade to reset and lift. At this time, the front end of the pipeline cutting point remains stable due to the pressure of the cutting point positioning pressure plate, so that when the contact-guided cutting blade is reset and lifted, the cutting reset mechanism can be more quickly separated from the casing through-cutting surface, avoiding the contact between the cutting reset mechanism and the through-layer of each cutting point being blocked when the contact-guided cutting blade is reset and lifted, effectively improving the continuity of subsequent operation processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the annular segmented surface cutting assembly, the cutting end disengagement debugging mechanism and the split end pipe cutting assembly in the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0019] Figure 5 for Figure 3 Schematic diagram from another perspective;

[0020] Figure 6 for Figure 5 Enlarged view of part B in the middle.

[0021] In the figure: 1. pipe cutting action actuator; 2. casing positioning tooling; 3. switching slide rail; 4. annular segmented surface cutting assembly; 41. center-through cutting groove; 42. contact guide cutting blade; 43. cutting reset mechanism; 431. eccentric cutting transmission shaft; 432. lockless reset connection; 433. fixed support ear; 44. point interception sensor seat; 45. electromagnetic locking telescopic part; 5. cutting end disengagement debugging mechanism; 51. extension flat pressure hydraulic cylinder; 52. cutting point positioning pressure plate; 53. disengagement control signal generating assembly; 531. disengagement pressure sensing unit; 532. single signal transmission part; 6. split-end pipe cutting assembly. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 6 As shown, a pipe cutting machine for cutting insulating sleeves described in the present invention includes a pipe cutting action actuator 1, a sleeve positioning tool 2 and a switching slide rail 3. An annular segmented surface cutting component 4 and a cutting end disengagement debugging mechanism 5 are installed at the bottom of the pipe cutting action actuator 1. The annular segmented surface cutting component 4 is used to apply cutting pressure when performing local multi-point through-cutting of the insulating sleeve. After the annular segmented surface cutting component 4 completes the through-cutting of the insulating sleeve, it is covered to the surface of the insulating sleeve through the cutting end disengagement debugging mechanism 5, so as to support the insulating sleeve when the annular segmented surface cutting component 4 is cut and returned to its position, thereby ensuring that the annular segmented surface cutting component 4 is completely separated from the through-cutting part of the insulating sleeve.

[0024] In an optional implementation of the present embodiment, a split-end tube cutting assembly 6 is also installed at the bottom output end of the tube cutting action actuator 1, and the split-end tube cutting assembly 6 does not contact the middle-through cutting groove 41. The tube cutting action actuator 1 is used to switch the tube cutting application status of the middle-through cutting groove 41 and the split-end tube cutting assembly 6, and drive the middle-through cutting groove 41 or the split-end tube cutting assembly 6 to complete the cutting of the insulating sleeve.

[0025] In this embodiment, the present invention aims to solve the problem that when the existing pipe cutting machine cutter head performs multi-point and small-pitch through-cutting along the outer circumference of the pipe, the secondary cutting force generated when the cutter head is reset and lifted along the cutting path causes the casing to deviate from the original set cutting point interval length, and when the cutter head is reset and lifted along the cutting path, due to the large number of set cutting points, the contact area between the cutter head and each cutting through layer of the casing is larger, which makes it more likely that the cutting point between the cutter head and the casing will not be completely separated.

[0026] In this embodiment, the switching slide rail 3 is an electric slide rail, which is used to drive multiple sets of sleeve positioning tools 2 to be correspondingly adjusted to the bottom of the contact guide cutting blade 42. When performing the cutting operation, the corresponding sleeve positioning tool 2 is first selected by the switching slide rail 3 as a support device for the insulating sleeve during cutting. Then, the insulating sleeve is placed on the inner side of the sleeve positioning tool 2, and the driving model is sent to the pipe cutting action actuator 1. The outer periphery of the insulating sleeve is cut through at multiple points and with small spacing through the annular segmented surface cutting component 4. After the sleeve completes the multi-point and small spacing through-cutting and reaches the subsequent required winding length, the annular segmented surface cutting component 4 is lifted through the output end of the pipe cutting action actuator 1, and the split-end pipe cutting component 6 is lowered, so that the split-end pipe cutting component 6 is used as the cutting end, and the pipe cutting action actuator 1 is controlled to drive the split-end pipe cutting component 6 to press down the sleeve to completely cut the sleeve. Among them, two groups of cylinders are arranged at the output end of the tube cutting action actuator 1, and the cylinder output ends are respectively connected to the split-end tube cutting component 6 and the annular segmented surface cutting component 4 to complete the switching of the use state.

[0027] The annular segmented surface cutting assembly 4 includes a central cutting groove 41, a contact guiding cutting blade 42, a cutting reset mechanism 43, a point intercepting sensing seat 44 and an electromagnetic locking telescopic part 45. The central cutting groove 41 is installed at the output end of the tube cutting action actuator 1, the contact guiding cutting blade 42 is arranged in the inner cavity of the central cutting groove 41, the central cutting groove 41 is installed with a cutting reset mechanism 43, the contact guiding cutting blade 42 realizes rotation with the central cutting groove 41 through the cutting reset mechanism 43, the electromagnetic locking telescopic part 45 is used for locking the contact guiding cutting blade 42 after eccentric movement, the point intercepting sensing seat 44 is used to limit the maximum movement angle of the contact guiding cutting blade 42 during rotation, and after the contact guiding cutting blade 42 reaches the limit position, the point intercepting sensing seat 44 triggers the electromagnetic locking telescopic part 45 to send a locking control signal to the contact guiding cutting blade 42, so that the contact guiding cutting blade 42 still maintains the current through cutting angle after reaching the limit position.

[0028] In this embodiment, after the sleeve positioning tool 2 fixes the sleeve, the tube cutting action actuator 1 drives the central cutting groove member 41 to move toward the sleeve direction. Since the contact guiding cutting blade 42 can realize eccentric movement along the inner cavity of the central cutting groove member 41 through the cutting reset mechanism 43, when the contact guiding cutting blade 42 contacts the sleeve surface and the end face of the sleeve positioning tool 2, when the contact guiding cutting blade 42 is blocked by the sleeve positioning tool 2 under the action of pressure, the contact guiding cutting blade 42 will automatically slide along the outer side of the sleeve along the eccentric limiting direction of the cutting reset mechanism 43 to the corresponding cutting point, and then apply dynamic cutting pressure to the cutting surface, so that the contact guiding cutting blade 42 penetrates along the corresponding cutting point spacing. Compared with the straight cutting method, this sliding cutting method is less susceptible to the elasticity of the soft tube and is more convenient for one-time cutting and forming. During the eccentric rotation of the contact-guided cutting blade 42, after the contact-guided cutting blade 42 rotates to the maximum movement angle limited by the point interception sensing seat 44, the point interception sensing seat 44 triggers the electromagnetic locking telescopic part 45 to send a locking control signal to the contact-guided cutting blade 42, so that after the contact-guided cutting blade 42 reaches the limited position of the point interception sensing seat 44, it still maintains the cutting angle after penetrating the sleeve. At this time, the contact-guided cutting blade 42 that maintains a fixed cutting angle after the eccentric movement is smaller than the penetrating cutting surface formed by the sleeve, so that when the tube cutting action actuator 1 controls the contact-guided cutting blade 42 to reset and lift, the contact surface of the completed cutting point of the sleeve is reduced, making it easier for the cutter head to cut the sleeve until it is completely separated, and at the same time avoiding the cutting point from deviating from the original set cutting point interval length under the cutting action of the secondary lifting when the contact-guided cutting blade 42 is reset.

[0029] In this embodiment, the on-point interception sensing seat 44 includes a slot for accommodating the contact guide cutting blade 42 and a non-self-locking switch installed on the inner side of the slot, that is, after the contact guide cutting blade 42 eccentrically moves to the slot position, it triggers the non-self-locking switch on the inner side of the slot to turn on the power signal, and at this time the non-self-locking switch starts the electromagnetic locking telescopic part 45, and the contact guide cutting blade 42 is clamped and positioned by extending the output end of the electromagnetic locking telescopic part 45, so that the contact guide cutting blade 42 maintains the current eccentric angle after completing the sliding cutting, and then when the tube cutting action actuator 1 controls the contact guide cutting blade 42 to reset and lift, because the contact guide cutting blade 42 that maintains a fixed cutting angle after the eccentric movement is smaller than the through cutting surface formed by the sleeve, the contact surface of the sleeve at the completed cutting point can be reduced.

[0030] In an optional implementation of this embodiment, the cutting reset mechanism 43 includes an eccentric cutting transmission shaft 431, a non-locking reset connection portion 432 and a fixed support ear 433, the fixed support ear 433 is fixedly connected to the outer wall of the through cutting groove 41, the eccentric cutting transmission shaft 431 passes through the through cutting groove 41 and is rotatably connected to the through cutting groove 41, one end of the eccentric cutting transmission shaft 431 is fixedly connected to the contact guide cutting blade 42, and the non-locking reset connection portion 432 is installed between the eccentric cutting transmission shaft 431 and the fixed support ear 433.

[0031] In an optional implementation of the present embodiment, the point-to-point interception sensing seat 44 is fixedly connected to the inner side of the middle-through cutting groove 41, and the electromagnetic locking telescopic part 45 is installed on the outer side of the middle-through cutting groove 41. The point-to-point interception sensing seat 44 is signal-connected with the electromagnetic locking telescopic part 45, and the output end of the electromagnetic locking telescopic part 45 passes through the middle-through cutting groove 41 and extends to the inner side of the middle-through cutting groove 41. The output end of the electromagnetic locking telescopic part 45 is engaged and connected with the contact guide cutting blade 42.

[0032] In this embodiment, after the eccentric cutting transmission shaft 431 is fixed to the contact guiding cutting blade 42, the contact guiding cutting blade 42 realizes eccentric movement along the eccentric cutting transmission shaft 431 as the rotation axis point. When the eccentric cutting transmission shaft 431 moves eccentrically, the non-locking reset connection part 432 (which is a torsion spring) between the fixed lug 433 and the eccentric cutting transmission shaft 431 is stretched by the force when the eccentric cutting transmission shaft 431 moves. The non-locking reset connection part 432 is used to provide the driving force required for the contact guiding cutting blade 42 to rotate and reset when the contact guiding cutting blade 42 escapes from the inner side of the cutting layer of the casing, that is, When the tube cutting action actuator 1 controls the contact guide cutting blade 42 to lift and reset, it sends an unlocking signal to the electromagnetic locking telescopic part 45 to release the fixed restriction on the contact guide cutting blade 42. At the same time, the bottom of the contact guide cutting blade 42 no longer contacts the end surface of the sleeve and the sleeve positioning tooling 2, so that the contact guide cutting blade 42 is driven by the unlocked reset connection part 432 (a torsion spring is used in this embodiment) to reset and shrink, and rotates out from the inner side of the card slot of the point interception sensing seat 44, so as to control the contact guide cutting blade 42 to automatically complete the reset after the tube cutting action actuator 1 is lifted, thereby ensuring the continuity of subsequent operations.

[0033] In an optional implementation of the present embodiment, the cutting end disengagement debugging mechanism 5 includes an extension flattening hydraulic cylinder 51, a cutting point positioning pressure plate 52 and a disengagement control signal generating component 53. The extension flattening hydraulic cylinder 51 is installed at the output end of the pipe cutting action actuator 1, and the cutting point positioning pressure plate 52 is fixedly connected to the output end of the extension flattening hydraulic cylinder 51. One side of the cutting point positioning pressure plate 52 is fixedly connected with a disengagement control signal generating component 53. The disengagement control signal generating component 53 is used to sense whether the current flattening position of the cutting point positioning pressure plate 52 is in contact with the insulating sleeve.

[0034] In this embodiment, after the pipe cutting action actuator 1 drives the contact guiding cutting blade 42 to press down to realize eccentric motion cutting, the extending flattening hydraulic cylinder 51 controls the cutting point positioning pressure plate 52 to press down to the front end position of the casing cutting point. When the cutting point positioning pressure plate 52 is pressed down, the disengagement control signal generating component 53 senses whether the current flattening position of the cutting point positioning pressure plate 52 is in contact with the insulating casing. When it is in contact, the sensing signal obtained by the disengagement control signal generating component 53 is sent to the pipe cutting action actuator 1, and the pipe cutting action actuator 1 is driven to automatically control the contact guiding cutting blade 42 to reset and lift. At this time, the front end of the pipeline cutting point remains stable due to the pressure of the cutting point positioning pressure plate 52, so that when the contact guiding cutting blade 42 is reset and lifted, the cutting reset mechanism 43 can be more quickly separated along the casing through-cutting surface, so as to avoid the contact guiding cutting blade 42 being blocked from contacting the through-layer of each cutting point when the contact guiding cutting blade 42 is reset and lifted, thereby effectively improving the continuity of subsequent operation processing.

[0035] In an optional implementation of the present embodiment, the disengagement control signal generating component 53 includes a disengagement pressure sensing unit 531 and a one-way signal transmission unit 532. The disengagement pressure sensing unit 531 is signal-connected to the one-way signal transmission unit 532. The one-way signal transmission unit 532 is signal-connected to the tube cutting action actuator 1. The tube cutting action actuator 1 controls the contact to guide the cutting blade 42 to complete the reset action after through cutting through the flat pressure completion signal reflected by the one-way signal transmission unit 532.

[0036] In this embodiment, the disengagement pressure sensing unit 531 is arranged on one side of the cutting point positioning pressure plate 52. When the cutting point positioning pressure plate 52 is pushed by the extension and flattening hydraulic cylinder 51 and contacts the inner sleeve of the sleeve positioning tooling 2, the disengagement pressure sensing unit 531 triggers a pressure signal and sends it to the single signal transmission unit 532, thereby causing the single signal transmission unit 532 to feedback a reset operation signal to the pipe cutting action actuator 1, so that the pipe cutting action actuator 1 continues to control the contact to guide the cutting blade 42 to complete the reset after through cutting.

[0037] The working principle of the present invention is as follows: by switching the slide rail 3, the corresponding sleeve positioning tool 2 is selected as the supporting device for the insulating sleeve during the cutting process, and then the insulating sleeve is placed on the inner side of the sleeve positioning tool 2, and a driving signal is sent to the pipe cutting action actuator 1. After receiving the driving signal, the pipe cutting action actuator 1 controls the central cutting groove 41 to move toward the sleeve, so that the contact guide cutting blade 42 slides along the corresponding cutting point on the outer side of the sleeve under the action of pressure, and then applies dynamic cutting pressure to the cutting surface, and penetrates the cutting surface at the required spacing of the cutting point, until the contact guide cutting blade 42 rotates to the maximum movement angle limited by the point interception sensing seat 44, and then the point interception sensing seat 44 triggers the electromagnetic locking telescopic part 45 to send a locking control signal to the contact guide cutting blade 42, so that the contact guide cutting blade 42 After reaching the limit position of the interception point sensing seat 44, the cutting angle after penetrating the sleeve is still maintained. At this time, the cutting surface of the contact guide cutting blade 42 that maintains a fixed cutting angle after the rotational movement is smaller than the penetrating cutting surface formed by the sleeve, so that the tube cutting action actuator 1 controls the contact guide cutting blade 42 to reset and lift, thereby reducing the contact surface of the completed cutting point of the sleeve, making it easier for the cutter head to cut the sleeve to completely separate, and at the same time avoiding the cutting point from deviating from the original set cutting point interval length under the cutting action of the second lifting when the contact guide cutting blade 42 is reset. After cutting, the extended leveling hydraulic cylinder 51 controls the cutting point positioning pressure plate 52 to press down to the front end position of the casing cutting point. When the cutting point positioning pressure plate 52 is pressed down, the disengagement control signal generating component 53 senses whether the current leveling position of the cutting point positioning pressure plate 52 is in contact with the insulating casing. When it is in contact, the sensing signal obtained by the disengagement control signal generating component 53 is sent to the pipe cutting action actuator 1, and the pipe cutting action actuator 1 is driven to automatically control the contact guide cutting blade 42 to reset and lift. At this time, the front end of the pipe cutting point is kept stable due to the pressure of the cutting point positioning pressure plate 52, so that when the contact guide cutting blade 42 is reset and lifted, the cutting reset mechanism 43 can be more quickly disengaged along the casing through the cutting surface. After the casing completes multi-point and small-pitch through-cutting and reaches the required winding length, the pipe cutting action actuator 1 is controlled to shrink the annular segmented surface cutting component 4, and the end-to-end pipe cutting component 6 is extended to press down the casing to completely cut off the casing, completing the entire processing flow.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A pipe cutting machine for insulating casing cutting, comprising a pipe cutting actuator (1), a casing positioning tool (2) and a switching slide rail (3), characterized in that: The bottom of the tube cutting actuator (1) is provided with an annular segmented surface cutting component (4) and a cutting end separation debugging mechanism (5). The annular segmented surface cutting component (4) is used to apply cutting pressure when the insulating sleeve is cut through at multiple points locally. After the annular segmented surface cutting component (4) completes the through-cutting of the insulating sleeve, the cutting end separation debugging mechanism (5) covers the surface of the insulating sleeve, so as to support the insulating sleeve when the annular segmented surface cutting component (4) is cut and returned to its original position, thereby ensuring that the annular segmented surface cutting component (4) is completely separated from the through-cutting position of the insulating sleeve. The annular segmented surface cutting assembly (4) comprises a central cutting groove (41), a contact guiding cutting blade (42), a cutting reset mechanism (43), an on-point interception sensing seat (44) and an electromagnetic locking telescopic portion (45); the central cutting groove (41) is mounted on the output end of the tube cutting action actuator (1); the contact guiding cutting blade (42) is arranged in the inner cavity of the central cutting groove (41); the central cutting groove (41) is installed with a cutting reset mechanism (43); the contact guiding cutting blade (42) is connected to the central cutting groove through the cutting reset mechanism (43). The electromagnetic locking telescopic part (45) is used for locking the contact guide cutting blade (42) after eccentric movement, and the point interception sensing seat (44) is used for limiting the maximum movement angle of the contact guide cutting blade (42) during rotation, and after the contact guide cutting blade (42) reaches the limit position, the point interception sensing seat (44) triggers the electromagnetic locking telescopic part (45) to send a locking control signal to the contact guide cutting blade (42), so that the contact guide cutting blade (42) still maintains the current through cutting angle after reaching the limit position; The cutting reset mechanism (43) comprises an eccentric cutting transmission shaft (431), a non-locking reset connection portion (432) and a fixed lug (433); the fixed lug (433) is fixedly connected to the outer wall of the through-hole cutting groove member (41); the eccentric cutting transmission shaft (431) passes through the through-hole cutting groove member (41) and is rotatably connected to the through-hole cutting groove member (41); one end of the eccentric cutting transmission shaft (431) is fixedly connected to the contact guide cutting blade (42); and the non-locking reset connection portion (432) is installed between the eccentric cutting transmission shaft (431) and the fixed lug (433).

2. The insulating sleeve cutting machine according to claim 1, characterized in that: The cutting end disengagement debugging mechanism (5) comprises an extended flat-pressing hydraulic cylinder (51), a cutting point positioning pressure plate (52) and a disengagement control signal generating component (53); the extended flat-pressing hydraulic cylinder (51) is mounted on the output end of the pipe cutting action actuator (1); the cutting point positioning pressure plate (52) is fixedly connected to the output end of the extended flat-pressing hydraulic cylinder (51); one side of the cutting point positioning pressure plate (52) is fixedly connected to a disengagement control signal generating component (53); the disengagement control signal generating component (53) is used to sense whether the current flat-pressing position of the cutting point positioning pressure plate (52) is in contact with the insulating sleeve.

3. The insulating sleeve cutting machine according to claim 2, characterized in that: The disengagement control signal generating component (53) comprises a disengagement pressure sensing unit (531) and a one-way signal transmission unit (532), wherein the disengagement pressure sensing unit (531) is signal-connected to the one-way signal transmission unit (532), and the one-way signal transmission unit (532) is signal-connected to the tube cutting action actuator (1), and the tube cutting action actuator (1) controls the contact-guided cutting blade (42) to complete a reset action after through-cutting through the flat pressure completion signal reflected by the one-way signal transmission unit (532).

4. The insulating sleeve cutting machine according to claim 1, characterized in that: The point-to-point interception sensing seat (44) is fixedly connected to the inner side of the middle-through cutting groove (41), and the electromagnetic locking telescopic part (45) is installed on the outer side of the middle-through cutting groove (41). The point-to-point interception sensing seat (44) is signal-connected with the electromagnetic locking telescopic part (45), and the output end of the electromagnetic locking telescopic part (45) passes through the middle-through cutting groove (41) and extends to the inner side of the middle-through cutting groove (41). The output end of the electromagnetic locking telescopic part (45) is engaged and connected with the contact guide cutting blade (42).

5. The insulating sleeve cutting machine according to claim 1, characterized in that: The bottom output end of the tube cutting action actuator (1) is also equipped with a split-end tube cutting assembly (6), the split-end tube cutting assembly (6) does not contact the middle-through cutting groove (41), and the tube cutting action actuator (1) is used to switch the tube cutting application state of the middle-through cutting groove (41) and the split-end tube cutting assembly (6), and drive the middle-through cutting groove (41) or the split-end tube cutting assembly (6) to complete the cutting of the insulating sleeve.

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