CN113787366B

CN113787366B - Seal welding cutting tool

Info

Publication number: CN113787366B
Application number: CN202111161577.7A
Authority: CN
Inventors: 田荣; 袁林涛; 李勇; 宋水; 刘坤; 李淮伟; 孙来战
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Lingao Nuclear Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Lingao Nuclear Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2024-06-28
Anticipated expiration: 2041-09-30
Also published as: CN113787366A

Abstract

The invention relates to a seal welding cutting tool which comprises a tool rest, a rotating mechanism, a feeding mechanism and a holding mechanism, wherein the axial direction of the tool rest is along a first direction, one end of the tool rest is provided with a combined tool, the combined tool and the axial direction of the tool rest are arranged at intervals along a second direction, the first direction is perpendicular to the second direction, the rotating mechanism is arranged on the tool rest, the feeding mechanism is arranged at one end, far away from the combined tool, of the tool rest, and the holding mechanism is arranged at one side, far away from the feeding mechanism, of the rotating mechanism. When the tool holder is used for cutting seal welding between the finger sleeve and the thrust ring, the enclasping mechanism fixes the positions of the finger sleeve and the thrust ring, the tool holder is arranged on the rotating mechanism, meanwhile, the enclasping mechanism is connected with the rotating mechanism, namely, the cutting position of the seal welding is relatively fixed with the position of the tool holder, the combined tool on the tool holder rotates at a constant speed along the axis to cut the seal welding, and the tool holder is not easy to shake in the cutting process, so that the cutting precision is high; and the cut surface is smooth, the polishing is not needed again, and the cut thrust ring can be reused.

Description

Seal welding cutting tool

Technical Field

The invention relates to the technical field of seal welding and cutting tools, in particular to a seal welding and cutting tool.

Background

The CPR1000 pile type finger sleeve mainly provides a channel for a neutron measurement probe of a reactor core, wherein a thrust ring and an extension section are sleeved outside the finger sleeve, one end of the finger sleeve inserted into the thrust ring is connected with the thrust ring through seal welding, and the thrust ring is connected with the extension section through butt welding. During the operation of the unit, the finger sleeve is affected by vibration and is continuously contacted with external supporting structures such as a supporting column to cause abrasion, and in order to avoid the excessive abrasion of the finger sleeve, a new abrasion point, namely a pipe cutting and shifting process, is required to be continuously established for cutting and shifting the finger sleeve.

In the prior art, the cutting and polishing work of seal welding between the finger sleeve and the thrust ring is finished by manual operation, so that the personnel error is large, and the cut thrust ring cannot be reused.

Disclosure of Invention

In view of this, it is necessary to provide a seal welding cutting tool for solving the problem of large errors caused by manual seal welding.

A seal-welding cutting tool for cutting a seal-welding position of a piece to be cut, the seal-welding cutting tool comprising:

The axial direction of the tool rest is along a first direction, one end of the tool rest is provided with a combined tool, the combined tool and the axial direction of the tool rest are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction;

the rotating mechanism is arranged on the tool rest and used for driving the tool rest to rotate around the axis of the tool rest;

the feeding mechanism is arranged on one side of the tool rest, far away from the combined tool, and is used for pushing the tool rest to move along a first direction; and

And the enclasping mechanism is connected with the rotating mechanism and is positioned on one side of the rotating mechanism away from the feeding mechanism and used for clamping the workpiece to be cut.

In one embodiment, the rotation mechanism includes:

The shaft sleeve is sleeved outside the tool rest, a connecting groove is formed in the shaft sleeve, and the tool rest is in sliding fit with the connecting groove along a first direction;

The connecting groove is used for preventing the shaft sleeve from rotating relative to the tool rest, so that the shaft sleeve can drive the tool rest to synchronously rotate when rotating.

In one embodiment, the cross section of the connecting groove is non-circular, and the cross section of the tool holder is adapted to the cross section of the connecting groove.

In one embodiment, the rotation mechanism includes:

The driven bevel gear is sleeved outside the shaft sleeve and used for driving the shaft sleeve to rotate around the axis of the tool rest;

A drive bevel gear engaged with the driven bevel gear;

And the output end of the driving piece is connected with the driving bevel gear and is used for driving the driving bevel gear to rotate.

In one embodiment, the feed mechanism comprises:

the second shell is connected with the rotating mechanism, and the length direction of the second shell is along the first direction; and

The runner is arranged in the second shell and is in threaded transmission fit with the second shell, so that the runner can push the tool rest along a first direction when rotating relative to the second shell.

In one embodiment, the seal welding and cutting tool further comprises a limiting rod, wherein one end of the limiting rod is fixed with the rotating wheel, and the other end of the limiting rod is arranged in the tool rest in a penetrating manner;

And a limiting structure is arranged in the tool rest, and the limiting rod is matched with the limiting structure and used for preventing the rotating wheel from being separated from the tool rest.

In one embodiment, the tool rest is provided with a first hole and a second hole in sequence along a first direction, the diameter of the first hole is larger than that of the second hole, a step surface is formed at the joint of the hole wall of the first hole and the hole wall of the second hole, and the limiting structure comprises the step surface;

The limiting rod comprises a rod body and a joint which are sequentially arranged along a first direction, and the diameter of the joint is larger than that of the rod body; the rod body penetrates through the second hole, and the joint is arranged in the first hole and matched with the step surface.

In one embodiment, the clasping mechanism comprises:

the mounting seat is connected with the rotating mechanism;

a seat cover arranged on the mounting seat and gradually reducing the inner diameter of the seat cover along the direction that the seat cover approaches the rotating mechanism, and

The expansion sleeve can penetrate through the seat sleeve and is used for holding a piece to be cut tightly, and the expansion sleeve is provided with a first position and a second position;

when the expansion sleeve is in the first position, the expansion sleeve is positioned close to one end of the seat sleeve, which is smaller in inner diameter, the seat sleeve clamps the expansion sleeve, the expansion sleeve contracts, and the expansion sleeve tightly holds a piece to be cut;

When in the second position, the expansion sleeve is positioned at one end close to the seat sleeve, the inner diameter of which is larger, the seat sleeve releases the expansion sleeve, the expansion sleeve is opened, and the expansion sleeve releases the workpiece to be cut.

In one embodiment, the clasping mechanism further comprises:

The end cover is arranged on one side, far away from the rotating mechanism, of the seat cover, and the first end of the end cover is rotationally connected with the mounting seat; and

The pushing assembly is connected with the end cover and used for driving the end cover to rotate relative to the mounting seat so as to realize opening and closing of the end cover;

when the pushing assembly drives the end cover to be switched from an open state to a closed state, the end cover extrudes the expansion sleeve, so that the expansion sleeve is switched from the second position to the first position.

In one embodiment, the end cover is provided with a through hole, and the enclasping mechanism further comprises:

the clamping ring is arranged in the through hole in a penetrating mode and fixedly connected with the end cover, a protruding portion is arranged on one side, close to the expansion sleeve, of the clamping ring, the inner diameter of the clamping ring is larger than the maximum outer diameter of an object to be cut, and the inner diameter of the clamping ring is smaller than the maximum outer diameter of the expansion sleeve.

In one embodiment, the end cap has a second end opposite the first end, and the push assembly includes:

One end of the pull rod is rotationally connected with the mounting seat;

one end of the connecting rod is rotationally connected to the second end of the end cover, and the other end of the connecting rod is rotationally connected with the middle part of the pull rod.

In one embodiment, the gang tool extends into the mount, and the seal-welding cutting tool further comprises a dust suction mechanism disposed on the mount.

In one embodiment, the seal cutting tool further comprises a muffler disposed on the rotating mechanism.

The seal welding cutting tool comprises a tool rest, a rotating mechanism, a feeding mechanism and a enclasping mechanism, wherein the workpiece to be cut is clamped through the enclasping mechanism, so that the seal welding position of the workpiece to be cut is opposite to the position of a tool on the tool rest, the rotating mechanism rotates to drive the tool rest to rotate, the combined tool can rotationally cut the seal welding, meanwhile, the feeding mechanism is used for pushing the tool rest along a first direction, the tool rest can drive the combined tool to stretch into the seal welding along the first direction, and the cutting depth of the combined tool can be controlled by controlling the moving amount of the tool rest.

When the device is used for cutting seal welding between the finger sleeve and the thrust ring, the enclasping mechanism fixes the positions of the finger sleeve and the thrust ring, the rotating mechanism is arranged on the tool rest, meanwhile, the enclasping mechanism is connected with the rotating mechanism, namely, the enclasping mechanism is relatively fixed with the tool rest, the cutting position of seal welding is relatively fixed with the tool rest, shaking is not easy to occur in the cutting process, and the cutting precision is high; and because the rotating mechanism rotates at a constant speed, the cut surface is smooth, the polishing is not needed again, and the cut thrust ring can be reused.

Drawings

FIG. 1 is a schematic view of a seal welding and cutting tool (with a first housing removed) in one embodiment;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1 (with a first housing);

FIG. 3 is an exploded view of the clasping mechanism;

fig. 4 is a state diagram of the pushing mechanism when the mount is opened.

Reference numerals: 100-knife rest; 110-combination tool; 111-cutting knife;

200-a rotating mechanism; 210-shaft sleeve; 211-connecting grooves; 220-driven bevel gear; 230-drive bevel gear; 240-driving member; 250-a first housing;

300-a feeding mechanism; 310-a second housing; 320-rotating wheel; 330-a hand wheel;

410-a limit rod; 412-a rod body; 413-linker; 431-first hole; 432-second hole;

600-enclasping mechanism; 610-mount; 611-a dust suction mechanism; 620-seat cover; 630-expanding sleeve; 640-end caps; 650-pushing assembly; 651-pull rod; 652-a connecting rod; 660-press rings;

710-thrust ring; 711-large diameter section; 712—small diameter section; 720-refer to a cannula;

800-muffler.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides a seal-welding cutting tool for cutting a seal-welding position of a workpiece to be cut, the seal-welding cutting tool including a tool rest 100, a rotating mechanism 200, a feeding mechanism 300, and a clasping mechanism 600.

Referring to fig. 3, in which the workpiece to be cut may refer to a sleeve 720 and a thrust ring 710, the thrust ring 710 includes a large diameter section 711 and a small diameter section 712, the sleeve 720 is inserted into the thrust ring 710, and one end of the sleeve 720 is flush with the small diameter section 712 of the thrust ring 710 and welded by seal welding, the seal welding cutting tool needs to cut seal welding between the sleeve 720 and the thrust ring 710 to separate the sleeve 720 and the thrust ring 710.

The axial direction of the tool rest 100 is along a first direction, one end of the tool rest 100 is provided with a combined tool 110, the combined tool 110 and the axial direction of the tool rest 100 are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction. I.e., the composite tool 110 is eccentrically positioned, the path of movement of the composite prop is circular when the tool holder 100 is rotated, i.e., the annular seal weld between the finger sleeve 720 and the thrust collar 710 is cut. The rotating mechanism 200 is arranged on the tool rest 100, the feeding mechanism 300 is arranged at one end of the tool rest 100 far away from the combined tool 110, and the holding mechanism 600 is arranged at one side of the rotating mechanism 200 far away from the feeding mechanism 300.

In this embodiment, by setting the tool rest 100, the rotating mechanism 200, the feeding mechanism 300 and the enclasping mechanism 600, the workpiece to be cut is clamped by the enclasping mechanism 600, so that the seal welding position of the workpiece to be cut is opposite to the tool position on the tool rest 100, the rotating mechanism 200 rotates to drive the tool rest 100 to rotate, so that the combined tool 110 can rotationally cut the seal welding, and meanwhile, the feeding mechanism 300 is used for pushing the tool rest 100 along the first direction, so that the tool rest 100 can drive the combined tool 110 to extend into the seal welding along the first direction, and the cutting depth of the combined tool 110 can be controlled by controlling the moving amount of the tool rest 100.

When the device is used for cutting seal welding between the finger sleeve 720 and the thrust ring 710, the enclasping mechanism 600 is used for fixing the positions of the finger sleeve 720 and the thrust ring 710, the rotating mechanism 200 is arranged on the tool rest 100, meanwhile, the enclasping mechanism 600 is connected with the rotating mechanism 200, namely, the enclasping mechanism 600 is relatively fixed with the tool rest 100, the cutting position of seal welding is relatively fixed with the position of the tool rest 100, shaking is not easy to occur in the cutting process, and the cutting precision is high; and because the rotating mechanism 200 rotates at a constant speed, the cut surface is smooth, the polishing is not needed again, and the cut thrust ring 710 can be reused.

Referring to fig. 2, in some embodiments, the rotation mechanism 200 includes a sleeve 210, the sleeve 210 is sleeved on the outside of the tool holder 100, a connecting slot 211 is provided in the sleeve 210, and the tool holder 100 is slidably matched with the connecting slot 211 along a first direction, that is, when the feeding mechanism 300 pushes the tool holder 100, the tool holder 100 can drive the combined tool 110 to move along the first direction, so that the cutting depth can be changed. Meanwhile, the connecting groove 211 is used for preventing the shaft sleeve 210 and the tool holder 100 from rotating relatively, so that the shaft sleeve 210 can drive the tool holder 100 to rotate synchronously when rotating.

In the present embodiment, the rotation mechanism 200 and the feeding mechanism 300 can be individually applied to the tool rest 100, respectively, and the movement modes therebetween do not affect each other. Before cutting, the distance between the gang tool 110 and the workpiece to be cut can be conveniently adjusted by adjusting only the feed mechanism 300, thereby moving the tool holder 100 in the first direction. During cutting, the rotating mechanism 200 drives the tool rest 100 to rotate, and the feeding mechanism 300 pushes the tool rest 100 and further pushes the combined tool 110 to extend into the seal welding, so that the seal welding is cut.

In some of these embodiments, the cross-section of the attachment slot 211 is non-circular and the cross-sectional shape of the tool holder 100 is adapted to the cross-sectional shape of the attachment slot 211. One end of the tool holder 100 is inserted into the connecting groove 211, one end of the tool holder 100 located in the connecting groove 211 can slide in the connecting groove 211, and meanwhile, the shaft sleeve 210 can drive the tool holder 100 to rotate when rotating, and specifically, the cross section of the connecting groove 211 and the cross section of the tool holder 100 can be rectangular or triangular.

Referring to fig. 1 and 2, in some embodiments, the rotation mechanism 200 further includes a driven bevel gear 220, a drive bevel gear 230, a driver 240, and a first housing 250. The driven bevel gear 220 is sleeved outside the shaft sleeve 210, and is used for driving the shaft sleeve 210 to rotate around the axis of the tool rest 100; the drive bevel gear 230 meshes with the driven bevel gear 220; one end of the driving member 240 is connected to the drive bevel gear 230 for driving the drive bevel gear 230 to rotate; the drive bevel gear 230 and the driven bevel gear 220 are both disposed within the first housing 250.

In the present embodiment, since the drive bevel gear 230 and the driven bevel gear 220 are vertically disposed, the first housing 250 has a T-shape, and both sides of the sleeve 210 in the first direction are coupled to the first housing 250 through bearings, respectively. The driving member 240 is fixed in the first housing 250.

Referring to fig. 2, in some embodiments, the feeding mechanism 300 includes a second housing 310 and a rotating wheel 320, the second housing 310 is connected to the rotating mechanism 200, specifically, the second housing 310 is fixedly connected to the first housing 250, and a length direction of the second housing 310 is along the first direction. The runner 320 is disposed in the second housing 310, and the runner 320 is in threaded engagement with the second housing 310, such that the runner 320 is capable of pushing the tool holder 100 in a first direction when rotated relative to the second housing 310.

In this embodiment, a hand wheel 330 is disposed at an end of the runner 320 away from the first housing 250, and the runner 320 is driven to rotate and advance in the second housing 310 by rotating the hand wheel 330, so as to push the tool holder 100 in the first direction.

In other embodiments, the feed mechanism may also be other telescopic mechanisms, such as a cylinder, the piston end of which is used for sliding the tool holder along the length of the connecting slot.

In some embodiments, the seal welding cutting tool further comprises a limiting rod 410, one end of the limiting rod 410 is fixed with the rotating wheel 320, and the other end of the limiting rod is arranged in the tool rest 100 in a penetrating way; a limit structure is provided in the tool holder 100, and a limit lever 410 is engaged with the limit structure to prevent the rotating wheel 320 from being separated from the tool holder 100.

Further, the limiting structure includes a first hole 431 and a second hole 432 sequentially arranged along the first direction, and the diameter of the first hole 431 is larger than that of the second hole 432; the junction of the hole wall of the first hole 431 and the hole wall of the second hole 432 forms a step surface, and the limiting structure comprises the step surface. The stop lever 410 includes a lever body 412 and a joint 413 sequentially arranged in a first direction, the diameter of the joint 413 being larger than that of the lever body 412; the rod 412 is inserted through the second hole 432, and the joint 413 is disposed in the first hole 431 and cooperates with the step surface.

In the present embodiment, one end of the rod 412 passes through the second hole 432 and is fixed to the rotating wheel 320, and when the rotating wheel 320 rotates, the rod 412 can be driven to rotate in the second hole 432, so as to drive the joint to rotate in the first hole 431. Therefore, when the rotating wheel 320 moves along the first direction, the stop lever 410 and the tool rest 100 both move synchronously along the first direction, i.e. the stop lever 410 connects the rotating wheel 320 with the tool rest 100 all the time, so as to prevent the rotating wheel 320 from being separated from the tool rest 100, thereby increasing the stability of the structure.

Referring to fig. 2 and 3, in some embodiments, the hugging mechanism 600 includes a mounting base 610, a sleeve 620, and an expanding sleeve 630. The mounting base 610 is connected with the first housing 250 of the rotating mechanism 200 through bolts, that is, the enclasping mechanism 600 is connected with the rotating mechanism 200 into a whole, so that the object to be cut and the combined cutter 110 can be prevented from shaking in the cutting process, and the cutting precision can be further enhanced.

The sleeve 620 is disposed on the mounting base 610, and the inner diameter of the sleeve 620 is gradually reduced along the direction in which the sleeve 620 approaches the rotation mechanism 200, and in particular, the sleeve 620 is disposed on a side of the mounting base 610 away from the rotation mechanism 200.

The expansion sleeve 630 can be inserted into the sleeve 620 for holding the workpiece to be cut. The expansion sleeve 630 has a first position and a second position. In the first position, the expansion sleeve 630 is located near the end of the sleeve 620 with smaller inner diameter, the sleeve 620 clamps the expansion sleeve 630, the expansion sleeve 630 contracts, and the expansion sleeve 630 holds the piece to be cut tightly; in the second position, the expansion sleeve 630 is positioned adjacent the larger inner diameter end of the sleeve 620, the sleeve 620 releases the expansion sleeve 630, the expansion sleeve 630 expands, and the expansion sleeve 630 releases the piece to be cut.

Specifically, the outer diameter of the expansion sleeve 630 is trapezoidal along the cross section of the first direction, the expansion sleeve 630 includes a plurality of movable arms, the plurality of movable arms are sequentially arranged along the circumference of the expansion sleeve, one end of each movable arm is fixed, and the other end of each movable arm can move along the radial direction of the expansion sleeve, so that the expansion sleeve 630 is opened or tightened. In the first position, the expansion sleeve 630 extends completely into the sleeve 620, and the plurality of movable arms are compressed by the sleeve 620 to contract, so that the inner diameter becomes smaller, and the belt cutter can be clamped. In the second position, a portion of the expansion sleeve 630 extends out of the sleeve 620, the compression of the sleeve 620 to the expansion sleeve 630 is reduced, and the plurality of movable arms are opened relative to the first position, i.e. the inner diameter of the expansion sleeve 630 is increased, and the expansion sleeve 630 has no clamping effect on the workpiece to be cut.

In some embodiments, the hugging mechanism 600 further comprises an end cap 640 and a pushing assembly 650, the end cap 640 being disposed on a side of the sleeve 620 remote from the rotation mechanism 200, a first end of the end cap 640 being rotatably coupled to the mounting block 610. A push assembly 650 is coupled to the end cap 640 for rotating about a first end of the end cap 640 to effect opening and closing of the end cap 640. When the pushing assembly 650 drives the end cap 640 to switch from the open state to the closed state, the end cap 640 presses the expansion sleeve 630, so that the expansion sleeve 630 is switched from the second position to the first position.

In actual use, the end cap 640 is first opened, and the expansion sleeve 630 is not fully inserted into the seat sleeve 620, i.e., the expansion sleeve 630 is in the second position. The object to be cut stretches into the enclasping mechanism 600, and then the pushing component 650 drives the end cover 640 to rotate and closes the end cover 640, namely the expansion sleeve 630 is switched to the first position, and the end cover 640 extrudes the expansion sleeve 630 in the closing process of the end cover 640, so that the expansion sleeve 630 contracts, and the object to be cut is clamped.

Further, a through hole is formed in the end cover 640, the holding mechanism 600 further comprises a pressing ring 660, the pressing ring 660 is arranged in the through hole in a penetrating mode and is fixed with the end cover 640, a protruding portion is arranged on one side, close to the expansion sleeve 630, of the pressing ring 660, and the expansion sleeve 630 can be extruded through the protruding portion. When in use, as the inner diameter of the pressing ring 660 is larger than the maximum outer diameter of the object to be cut, the inner diameter of the pressing ring 660 is smaller than the maximum outer diameter of the expansion sleeve 630, namely, the seal welding cutting tool can realize on-line installation and cutting, and when in installation, the object to be cut only needs to directly penetrate through the pressing ring 660 from one side of the seal welding cutting tool to go deep into the expansion sleeve 630, and then the end cover 640 is closed by the pushing component 650, so that the installation can be completed. When the pushing assembly 650 closes the end cap 640, the end cap 640 drives the pressing ring 660 to press the expansion sleeve 630, so that the expansion sleeve 630 is tightened.

Referring to fig. 4, specifically, the end cover 640 has a second end, the first end and the second end are respectively located at two opposite sides of the end cover 640, the pushing assembly 650 includes a pull rod 651 and a link 652, and one end of the pull rod 651 is rotatably connected with the mounting seat 610; one end of the link 652 is rotatably coupled to the second end of the cap 640, and the other end is rotatably coupled to the middle portion of the link 651.

In actual use, when the end cover 640 needs to be opened, the pull rod 651 is rotated anticlockwise, i.e. the pull rod 651 drives the link rod 652 to drive the end cover 640 to rotate anticlockwise around the first end of the end cover 640, and the end cover 640 is opened; when it is desired to close the end cap 640, the pull rod 651 is rotated clockwise, i.e., the pull rod 651 drives the link 652 and thus the end cap 640 to rotate clockwise about the first end of the end cap 640, with the end cap 640 closed.

In some embodiments, the seal cutting tool further includes a dust extraction mechanism 611, the dust extraction mechanism 611 being disposed on the mount 610. The gang tool 110 extends into the mount 610, cuts in the mount 610, and the cut chips are directly sucked by the dust suction mechanism 611.

In some embodiments, the seal cutting tool further includes a muffler 800, where the muffler 800 is disposed on the rotation mechanism 200, and in particular, the muffler 800 is disposed near the driving member 240 of the rotation mechanism 200 for reducing noise when the driving member 240 is operated.

In some embodiments, the gang tool 110 includes a cutter 111 and a grinder. The cutter 111 is used for directly cutting the seal welding part, and the grinding cutter is used for removing the flanging part because flanging of a part of the outer wall of the object to be cut can be caused in the cutting process.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A seal-welding cutting tool for cutting a seal-welding position of a piece to be cut, the seal-welding cutting tool comprising:

The enclasping mechanism is connected with the rotating mechanism and is positioned at one side of the rotating mechanism far away from the feeding mechanism and used for clamping a workpiece to be cut, and comprises a mounting seat, a seat sleeve, an expanding sleeve, an end cover and a pushing assembly, wherein the mounting seat is connected with the rotating mechanism; the seat sleeve is arranged on the mounting seat, the inner diameter of the seat sleeve gradually becomes smaller along the direction that the seat sleeve is close to the rotating mechanism, and the expansion sleeve can penetrate into the seat sleeve and is used for holding a piece to be cut tightly and is provided with a first position and a second position; when the expansion sleeve is in the first position, the expansion sleeve is positioned close to one end of the seat sleeve, which is smaller in inner diameter, the seat sleeve clamps the expansion sleeve, the expansion sleeve contracts, and the expansion sleeve tightly holds a piece to be cut; when the end cover is at the second position, the expansion sleeve is positioned at one end close to the seat cover and larger in inner diameter, the seat cover releases the expansion sleeve, the expansion sleeve is opened, the expansion sleeve releases a part to be cut, the end cover is arranged at one side of the seat cover, far away from the rotating mechanism, the first end of the end cover is rotationally connected with the mounting seat, the pushing assembly is connected with the end cover and is used for driving the end cover to rotate relative to the mounting seat so as to realize opening and closing of the end cover; when the pushing assembly drives the end cover to be switched from an open state to a closed state, the end cover extrudes the expansion sleeve, so that the expansion sleeve is switched from the second position to the first position.

2. The seal welding and cutting tool of claim 1, wherein the rotating mechanism comprises:

3. The seal welding and cutting tool of claim 2, wherein the cross-section of the attachment slot is non-circular and the cross-sectional shape of the tool holder is adapted to the cross-sectional shape of the attachment slot.

4. The seal welding and cutting tool of claim 2, wherein the rotating mechanism comprises:

A drive bevel gear engaged with the driven bevel gear;

5. The seal welding and cutting tool of claim 2, wherein the feed mechanism comprises:

6. The seal welding and cutting tool of claim 5 wherein,

The seal welding cutting tool also comprises a limiting rod, one end of the limiting rod is fixed with the rotating wheel, and the other end of the limiting rod is arranged in the tool rest in a penetrating way;

7. The seal welding and cutting tool of claim 6, wherein,

The tool rest is provided with a first hole and a second hole in sequence along a first direction, the diameter of the first hole is larger than that of the second hole, a step surface is formed at the joint of the hole wall of the first hole and the hole wall of the second hole, and the limiting structure comprises the step surface;

The limiting rod comprises a rod body and a joint which are sequentially arranged along a first direction, and the diameter of the joint is larger than that of the rod body; one end of the rod body penetrates through the second hole, the other end of the rod body is fixed with the rotating wheel, and the joint is arranged in the first hole and matched with the step surface.

8. The seal weld cutting tool of claim 1, wherein the end cap is provided with a through hole, and the clasping mechanism further comprises:

9. The seal welding and cutting tool of claim 8, wherein the end cap has a second end opposite the first end, the push assembly comprising:

One end of the pull rod is rotationally connected with the mounting seat;

10. The seal welding and cutting tool of claim 1, wherein the gang tool extends into the mount, the seal welding and cutting tool further comprising a dust suction mechanism disposed on the mount.

11. The seal welding and cutting tool of claim 1, further comprising a muffler disposed on the rotating mechanism.