CN110640239A

CN110640239A - Threading device

Info

Publication number: CN110640239A
Application number: CN201911106652.2A
Authority: CN
Inventors: 李援锋; 唐晨凌
Original assignee: Chongqing Chaoli Hi Tech Co Ltd
Current assignee: Chongqing super force electric appliance Co.,Ltd.
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-01-03

Abstract

The embodiment of the invention provides a threading device which is used for threading a tubular part, and comprises a rack, a positioning mechanism, a guide mechanism and a threading mechanism for threading the tubular part, wherein the positioning mechanism and the guide mechanism are arranged on the rack; the positioning mechanism is used for positioning the tubular piece so that the axis of the section to be processed of the tubular piece extends along the preset direction. The threading device can improve the threading quality of the tubular part.

Description

Threading device

Technical Field

The invention relates to the field of thread machining, in particular to a threading device.

Background

Currently, when threading a tubular member, the tubular member is positioned, and then a threading tool is aligned with one end of the tubular member, rotated and pressed against the threading tool, thereby threading the tubular member on the outer circumferential surface thereof.

In the research, the prior threading tool for the tubular member has the following defects:

the threading quality of the tubular member is poor.

Disclosure of Invention

Objects of the invention include, for example, providing a threading device that improves threading quality of tubular members.

Embodiments of the invention may be implemented as follows:

in a first aspect, an embodiment provides a threading device for threading a tubular member, the threading device including:

the threading device comprises a rack, a positioning mechanism, a guide mechanism and a threading mechanism for threading a tubular part, wherein the positioning mechanism and the guide mechanism are arranged on the rack, and the threading mechanism and the guide mechanism are in sliding fit along a preset direction and can rotate relatively; the positioning mechanism is used for positioning the tubular piece so that the axis of the section to be processed of the tubular piece extends along the preset direction.

In an alternative embodiment, the positioning mechanism includes a first positioning member having a first positioning portion and a first protrusion protruding on an outer circumferential surface of the first positioning portion; the first positioning part is used for being inserted into one end of the tubular piece, and the first convex part is connected with the rack and used for being abutted against the tubular piece so as to limit the depth of the first positioning part inserted into the tubular piece.

In an alternative embodiment, the first protrusion has a first circular table surface connected to an outer circumferential surface of the first positioning portion, and the first circular table surface is used for abutting against the tubular member to limit the depth of the first positioning portion inserted into the tubular member.

In an alternative embodiment, the positioning mechanism further includes a positioning table disposed on the frame, the positioning table is provided with an arc-shaped slideway, the first protruding portion is in sliding fit with the arc-shaped slideway, and when the first protruding portion slides relative to the arc-shaped slideway, the position of the first positioning portion is adjusted, so that the axis of the first positioning portion is collinear with the axis of the pipe section of the tubular member, into which the first positioning portion is inserted.

In an optional embodiment, the positioning mechanism further includes a second positioning member having a second positioning portion and a second protrusion protruding from an outer circumferential surface of the second positioning portion; the second positioning part is used for being inserted into the other end of the tubular piece, and the second convex part is connected with the rack and used for abutting against the tubular piece so as to limit the depth of the second positioning part inserted into the tubular piece.

In an alternative embodiment, the second protruding portion has a second circular table surface connected to the outer peripheral surface of the second positioning portion, and the second circular table surface is used for abutting against the tubular member to limit the depth of the second positioning portion inserted into the tubular member.

In an optional embodiment, the guide mechanism comprises a guide post and an installation cylinder, the guide post is in sliding fit with the rack along a preset direction, and the second convex part is connected with the guide post; the installation cylinder is in sliding fit with the guide column along a preset direction, and the thread-sleeving mechanism is connected with the installation cylinder.

In an optional embodiment, the guide mechanism further comprises a limiting cylinder, the limiting cylinder is in sliding fit with the guide post along a preset direction, and the mounting cylinder is sleeved outside the limiting cylinder and can synchronously slide with the limiting cylinder; the second convex part protrudes outwards along the radial direction of the guide post so as to be abutted against the second convex part when the limiting cylinder slides towards the second convex part, and therefore the sliding range of the limiting cylinder relative to the guide post is limited.

In an optional embodiment, the mantle fiber device further comprises a pulling mechanism, the pulling mechanism is arranged on the frame, and the pulling mechanism is connected with the guide post and used for driving the guide post to slide in a reciprocating manner relative to the frame, so that the guide post drives the second positioning part to be inserted into the tubular member or pulled out of the tubular member.

In an alternative embodiment, the threading device further comprises a clamping mechanism connected with the frame, the clamping mechanism being used for clamping the outer circumferential surface of the tubular member to prevent the tubular member from rotating during threading.

The beneficial effects of the embodiment of the invention include, for example:

in summary, the threading device provided in this embodiment is used for threading the outer circumferential surface of the tubular member, and when in use, the tubular member is positioned by the positioning mechanism, so that the axis of the section of the tubular member to be processed extends along the preset direction, and the tubular member is aligned with the threading mechanism. Then, the threading mechanism is rotated and simultaneously pressed on the threading mechanism, so that the threading mechanism is close to the tubular part along the preset direction relative to the guide mechanism in the rotating process, external threads can be processed on the outer peripheral surface of the tubular part by the threading mechanism, and the threading mechanism is continuously pressed until threading is completed. Before the mantle fiber, at the facing mechanism move to the tip complex in-process with the tubulose spare, the facing mechanism leads through guiding mechanism, because the facing mechanism slides along the direction that is on a parallel with the axis of tubulose spare all the time, make the axis of the die of facing mechanism and the difficult emergence incline of axis of tubulose spare, assembly quality is high, and the facing mechanism is led by guiding mechanism all the time in the mantle fiber in-process, the motion is steady, difficult incline, thereby make the difficult incline of external screw thread of processing formation on the outer peripheral face of tubulose spare, the shaping high quality of external screw thread.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a threading device provided in this embodiment;

fig. 2 is a schematic cross-sectional structural view of the threading device provided in this embodiment;

fig. 3 is a schematic structural diagram of the rack provided in this embodiment;

fig. 4 is an exploded schematic structural diagram of the positioning table, the first positioning element and the adaptor according to the present embodiment;

fig. 5 is an exploded schematic structural diagram of a first view angle of the guide post and the second positioning element provided in this embodiment;

fig. 6 is an exploded schematic structural view of a second view angle of the guide post and the second positioning element provided in this embodiment;

fig. 7 is a schematic structural diagram of the clamping mechanism provided in this embodiment.

Icon:

001-threading device; 100-a frame; 110-a base; 111-a chute; 120-vertical rod; 130-a first mounting plate; 140-a second mounting plate; 200-a positioning mechanism; 210-a first locator; 211-a first fixation section; 212-a first positioning portion; 213-first convex part; 214-a first table top; 220-a second positioning element; 221-a second fixed part; 222-a second locator portion; 223-a second convex portion; 224-a step structure; 225-a second circular table; 230-an adaptor; 231-a plug-in part; 232-through holes; 233-mounting part; 234-a first frustoconical groove; 240-a positioning table; 241-arc wall; 242-arc chute; 243-bar-shaped opening; 300-a guide mechanism; 310-a guide post; 311-a first limit convex ring; 312-a second stop collar; 313-a second frustoconical slot; 320-mounting a barrel; 330-a limiting cylinder; 331-a limit protrusion; 340-a guide cylinder; 400-a thread-threading mechanism; 500-a pulling mechanism; 510-connecting block; 520-a spring; 600-a clamping mechanism; 610-a clamping block; 611-a clamping groove; 700-a handle; 002-a tubular member; 021-a first tube section; 022-a second tube section; 003-quick clamp structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1 and 2, the present embodiment provides a threading device 001 for threading the outer circumferential surface of the tubular member 002, and obviously, the tubular member 002 may be a circular tube, or alternatively, a portion of the tubular member 002 may be a circular tube, and the threading device 001 is used for threading a portion of the circular tube section of the tubular member 002. In addition, the tubular member 002 to be processed may be a straight pipe or a bent pipe, and in this embodiment, the tubular member to be processed is illustrated as a bent pipe, and the tubular member 002 includes a first pipe segment 021 and a second pipe segment 022 having an included angle, and the first pipe segment 021 is a segment to be processed.

The threading device 001 provided by this embodiment includes a frame 100, a positioning mechanism 200, a guiding mechanism 300, and a threading mechanism 400 for threading the tubular member 002, where the positioning mechanism 200 and the guiding mechanism 300 are both disposed on the frame 100, and the threading mechanism 400 and the guiding mechanism 300 are in sliding fit along a preset direction, and can rotate relatively; the positioning mechanism 200 is used to position the tubular member 002 such that the axis of the segment to be processed of the tubular member 002 extends in a predetermined direction.

The working principle of the threading device 001 provided according to the embodiment is as follows:

in summary, the threading device 001 of the present embodiment is used for threading the outer circumferential surface of the tubular element 002, and when in use, the tubular element 002 is positioned by the positioning mechanism 200, such that the axis of the to-be-machined section of the tubular element 002 extends along the preset direction, and the tubular element 002 is aligned with the threading mechanism. Then, the threading mechanism 400 is rotated while pressing the threading mechanism 400, so that the threading mechanism 400 is close to the tubular member 002 along the preset direction relative to the guide mechanism 300 in the rotating process, and the threading mechanism 400 can machine an external thread on the outer circumferential surface of the tubular member 002 and continuously press the threading mechanism 400 until threading is completed. Before the mantle fiber, move to the tip complex in-process with tubular member 002 at set tooth mechanism 400, set tooth mechanism 400 leads through guiding mechanism 300, because set tooth mechanism 400 slides along the direction that is on a parallel with the axis of tubular member 002 all the time, make the axis of the die of set tooth mechanism 400 and the axis of tubular member 002 coaxial and difficult emergence incline all the time, assembly quality is high, and set tooth mechanism 400 leads by guiding mechanism 300 all the time in the mantle fiber process, the motion is steady, difficult incline, thereby make the difficult incline of external screw thread of processing formation on the outer peripheral face of tubular member 002, the shaping high quality of external screw thread.

Referring to fig. 3, in the present embodiment, optionally, the frame 100 includes a base 110, an upright 120, a first mounting plate 130, and a second mounting plate 140, the upright 120 is disposed perpendicular to the base 110, and the upright 120 and the base 110 may be fixedly connected by bolts, or may be fixed by screws, rivets, or welding. The first mounting plate 130 and the second mounting plate 140 are parallel and are both fixedly connected to the upright 120. Optionally, the first mounting plate 130 and the second mounting plate 140 are both sleeved outside the vertical rod 120, and the first mounting plate 130 and the vertical rod 120 may be in interference fit; the second mounting plate 140 and the upright 120 may be in an interference fit, and after the installation is completed, the first mounting plate 130 and the second mounting plate 140 neither slide relative to the upright 120 nor rotate relative to the upright 120, so that the entire rack 100 is structurally stable and reliable. After the rack 100 is assembled, the first mounting plate 130 and the second mounting plate 140 have an interval along the length direction of the upright 120, the first mounting plate 130 and the second mounting plate 140 are strip-shaped, the lengths of the first mounting plate 130 and the second mounting plate 140 both extend along the direction perpendicular to the upright 120, and the orthographic projections of the two on the base 110 are both located on the base 110.

Obviously, in other embodiments, the positions of the first and

second mounting plates

130, 140 relative to the upright 120 may be adjusted, and then locked.

Optionally, the base 110 is provided with a sliding groove 111, a length of the sliding groove 111 extends along a length direction of the first mounting plate 130 or the second mounting plate 140, and a cross-sectional shape of the sliding groove 111 is "T" or dovetail.

Referring to fig. 1, fig. 2, fig. 4 and fig. 5, in the present embodiment, optionally, the positioning mechanism 200 includes a first positioning element 210, a second positioning element 220, an adapter element 230 and a positioning stage 240. The adapter 230 is movably connected with the positioning table 240, and the first positioning member 210 is detachably connected with the adapter 230 and used for positioning one end of the second pipe section 022 far away from the first pipe section 021; the second positioning member 220 is connected to the guiding mechanism 300 for positioning an end of the first pipe segment 021 away from the second pipe segment 022.

Optionally, the positioning table 240 is slidably connected to the base 110, and a sliding direction of the positioning table 240 and the base 110 is parallel to a length direction of the first mounting plate 130 or the second mounting plate 140. Optionally, the positioning table 240 is in sliding fit with the sliding groove 111 on the base 110, and the positioning table 240 is clamped in the sliding groove 111 to prevent the positioning table 240 from sliding out of the notch of the sliding groove 111 along the depth direction of the sliding groove 111. The positioning table 240 and the base 110 may be fixedly connected by bolts or screws, and when the position of the positioning table 240 needs to be adjusted, the bolts or screws are loosened, and after the adjustment is completed, the bolts or screws are tightened.

Further, the positioning stage 240 is provided with an arc wall 241, and the arc wall 241 may be a quarter of an arc wall, in other words, the arc wall 241 corresponds to a central angle of 90 degrees. An arc-shaped slideway 242 is arranged on the arc-shaped wall 241, strip-shaped openings 243 communicated with the arc-shaped slideway 242 are respectively arranged on two groove walls of the arc-shaped slideway 242 in the width direction, and the lengths of the two strip-shaped openings 243 extend along the length direction of the arc-shaped slideway 242.

Optionally, the adaptor 230 includes an insertion portion 231 and a mounting portion 233 connected to each other, the insertion portion 231 is in sliding fit with the arc-shaped slideway 242, a through hole 232 for a rod portion of a bolt to pass through is formed in the insertion portion 231, and the adaptor 230 is connected to the positioning table 240 through a bolt. During installation, the rod of the bolt sequentially passes through one of the two strip-shaped openings 243 and the through hole 232 and then extends out of the other strip-shaped opening 243, the nut is screwed on the extending part of the rod, the nut is tightened, and the adaptor 230 is clamped on the positioning table 240. When the position of the adaptor 230 needs to be adjusted, the bolt is unscrewed, so that the adaptor 230 slides relative to the arc-shaped slideway 242, and the positioning of the tubular member 002 with different bending degrees can be realized. Meanwhile, the positioning table 240 is matched with the base 110 in a sliding manner, so that the tubular members 002 with different bending degrees and different lengths can be positioned.

Optionally, an end surface of the mounting portion 233 away from the insertion portion 231 is provided with a first circular truncated cone-shaped groove 234 for positioning the first positioning element 210, and an axis of the first circular truncated cone-shaped groove 234 extends along a radial direction of a circle where the arc-shaped slide 242 is located. In other words, when the adaptor 230 slides in the arc-shaped slideway 242, the center of the arc-shaped slideway 242 is always positioned on the extension line of the axis of the first circular truncated cone-shaped groove 234.

Optionally, the first positioning element 210 is a cylindrical structure with a circular cross-sectional outer contour, the first positioning element 210 has a first fixing portion 211, a first positioning portion 212 and a first protrusion 213 protruding on the outer circumferential surface of the first positioning portion 212, the first fixing portion 211 is in a circular truncated cone shape, one end of the first fixing portion 211 with a larger diameter is connected with the first protrusion 213, the first fixing portion 211 is used for being inserted into the first circular truncated cone-shaped groove 234, and the first positioning element 210 and the adapter 230 can be fixedly connected by screws. When the first positioning element 210 is inserted into the first circular truncated cone-shaped groove 234, the first fixing portion 211 can play a role in guiding and positioning, so that the insertion of the adaptor 230 into the first positioning element 210 is facilitated. The first positioning portion 212 is used for inserting one end of the tubular member 002, and a part of the first protrusion 213 is used for abutting against the tubular member 002 to limit the depth of the first positioning portion 212 inserted into the tubular member 002.

Further, the first protrusion 213 has a first circular table 214 connected to the outer peripheral surface of the first positioning portion 212, and the first circular table 214 is used for abutting against the inner wall of the second tube segment 022 of the tubular member 002 to limit the depth of the first positioning portion 212 inserted into the tubular member 002. By arranging the first circular table surface 214, the first positioning piece 210 can be suitable for positioning the second pipe sections 022 with different inner diameters, and the application range is wide; and the positioning is carried out through the circular table top, so that the coaxiality is high.

Optionally, the second positioning element 220 includes a second fixing portion 221, a second positioning portion 222, and a second protrusion 223 protruding on an outer circumferential surface of the second positioning portion 222. The second fixing portion 221 is disposed at an end of the second protruding portion 223 far from the second positioning portion 222, the second fixing portion 221 is a circular truncated cone, the end of the second fixing portion 221 with a larger diameter is connected with an end surface of the second protruding portion 223, and the maximum diameter of the second fixing portion 221 is smaller than the outer diameter of the second protruding portion 223, so that the second fixing portion 221 and the second protruding portion 223 form a step structure 224. The second positioning part 222 is used for inserting the end of the first pipe segment 021 far away from the second pipe segment 022, and the second convex part 223 is connected with the guiding mechanism 300 and used for abutting against the tubular member 002 so as to limit the depth of the second positioning part 222 inserted into the tubular member 002.

Further, the second protrusion 223 has a second circular table 225 connected to the outer peripheral surface of the second positioning portion 222, and the second circular table 225 is used for abutting against the inner wall of the first pipe segment 021 to limit the depth of the second positioning portion 222 inserted into the tubular member 002. By arranging the second circular table surface 225, the second positioning part 220 can be suitable for positioning the first pipe sections 021 with different inner diameters, and the application range is wide; and the positioning is carried out through the circular table top, so that the coaxiality is high.

Referring to fig. 1, 2, 5 and 6, optionally, the guiding mechanism 300 includes a guiding column 310, a mounting cylinder 320, a limiting cylinder 330 and a guiding cylinder 340. The guide cylinder 340 is fixedly connected to the second mounting plate 140, an axis of the guide cylinder 340 extends along a preset direction, and optionally, the guide cylinder 340 and the second mounting plate 140 may be fixedly connected by bolts or screws. The guide post 310 penetrates through the second mounting plate 140 and then is inserted into the guide cylinder 340, one end of the guide post 310, which is close to the first mounting plate 130, extends out of one port of the guide cylinder 340, which is far away from the second mounting plate 140, the other end of the guide post 310 extends out of the second mounting plate 140, the guide post 310 is in sliding fit with the guide cylinder 340, and the guide post 310 is coaxial with the guide cylinder 340, in other words, the guide post 310 can slide in a preset direction relative to the guide cylinder 340. The outer peripheral surface of the guide column 310 is provided with a first limiting convex ring 311 and a second limiting convex ring 312, the first limiting convex ring 311 and the second limiting convex ring 312 are arranged at intervals along the length direction of the guide column 310, and both of the first limiting convex ring 311 and the second limiting convex ring 312 protrude outwards along the radial direction of the guide column 310. The first limiting convex ring 311 and the second limiting convex ring 312 are both located on one side of the second mounting plate 140 away from the first mounting plate 130, and the first limiting convex ring 311 is further away from the first mounting plate 130 relative to the second limiting convex ring 312. Furthermore, a second circular truncated cone-shaped groove 313 is formed in one end face, close to the first mounting plate 130, of the guide column 310, the second circular truncated cone-shaped groove 313 is coaxial with the guide column 310, the second fixing portion 221 of the second positioning member 220 is inserted into the second circular truncated cone-shaped groove 313, and the coaxiality of the second positioning member 220 and the guide column 310 is high.

The first limit protruding ring 311 and the second limit protruding ring 312 may be nuts screwed on the outer circumferential surface of the guide post 310. Obviously, in other embodiments, the second stop collar 312 and the guide post 310 may be integrally formed.

Optionally, the limiting cylinder 330 is sleeved outside the guiding cylinder 340 and coaxially disposed, the limiting cylinder 330 and the guiding cylinder 340 are in sliding fit along a preset direction, and the limiting cylinder 330 and the guiding cylinder 340 are in rotating fit around an axis of the guiding cylinder 340. The limiting cylinder 330 is in sliding fit with the part of the guide column 310 extending out of the guide cylinder 340, optionally, a limiting convex part 331 is arranged on the inner wall of the limiting cylinder 330, the limiting convex part 331 protrudes inwards along the radial direction of the limiting cylinder 330, and the limiting convex part 331 is in sliding fit with the guide column 310. When the limiting cylinder 330 is close to the second positioning element 220, the limiting protrusion 331 can abut against the step structure 224 on the second positioning element 220, so as to limit the sliding range of the limiting cylinder 330.

Optionally, the mounting cylinder 320 is sleeved outside the limiting cylinder 330, the mounting cylinder 320 is coaxial with the limiting cylinder 330, the mounting cylinder 320 is in sliding fit with the limiting cylinder 330 along a preset direction, meanwhile, the mounting cylinder 320 is locked with the limiting cylinder 330 through a screw or other fasteners, when the position of the mounting cylinder 320 relative to the limiting cylinder 330 in the preset direction needs to be adjusted, the screw is unscrewed, at this time, the mounting cylinder 320 can be slid, and after the position adjustment is completed, the screw is screwed, and the positions of the mounting cylinder 320 and the limiting cylinder 330 are locked. When the mounting cylinder 320 and the limiting cylinder 330 are locked, the mounting cylinder 320 and the limiting cylinder 330 slide and rotate relative to the guide cylinder 340 synchronously. And when the position of the position-limiting protrusion 331 on the position-limiting cylinder 330 is limited by the step structure 224, the position of the mounting cylinder 320 is also limited.

Optionally, the part of the mounting cylinder 320 is in clearance fit with the limiting cylinder 330, the rest part of the mounting cylinder is in threaded connection with the limiting cylinder 330, the mounting cylinder 320 is rotated to adjust the position of the mounting cylinder 320 relative to the limiting cylinder 330, so that the length of the mantle fiber is adjusted, and through a thread fit structure, the axial displacement of the mounting cylinder 320 and the limiting cylinder 330 can be calculated through the rotation angle, and the adjustment is more accurate. Further, the lower part of the mounting cylinder 320 is in threaded connection with the limiting cylinder 330, the upper part of the mounting cylinder is in sliding fit with the limiting cylinder 330, and the screw is in threaded connection with the upper part of the mounting cylinder 320, so that the mounting cylinder 320 and the limiting cylinder 330 are locked, and after the locking, the mounting cylinder 320 and the limiting cylinder 330 cannot rotate relatively.

In other embodiments, scale marks may be provided on the outer circumferential surface of the limiting cylinder 330, and the mounting cylinder 320 is adjusted relative to the limiting cylinder 330 according to the indication of the scale marks, so that the adjustment is accurate, and the length control of the mantle fiber is more accurate.

Further, a port of the mounting cylinder 320 facing the first mounting plate 130 is provided with a space for placing the threading mechanism 400, and a plurality of screws are screwed on the mounting cylinder 320, and ends of the screws can be screwed into the space.

Further, a handle 700 for rotating the mounting cylinder 320 is provided on the mounting cylinder 320.

Referring to fig. 1 and 2, in the present embodiment, the die-threading mechanism 400 includes a die that is clamped in the space of the mounting cylinder 320 and is locked in the mounting cylinder 320 by a plurality of screws, so as to prevent the die from rotating or sliding relative to the mounting cylinder 320. The dies can be removed from the mounting barrel 320 to facilitate replacement of dies of different sizes for machining external threads of different parameters and to accommodate machining of tubular members 002 of different outer diameters.

Referring to fig. 1 and 2, in another embodiment, the threading device 001 further includes a pulling mechanism 500, the pulling mechanism 500 is connected to the second mounting plate 140, the pulling mechanism 500 is a quick-clamping structure 003, and the pulling mechanism 500 is connected to the guide post 310 and is capable of pulling up the guide post 310 and pressing down the guide post 310 toward the first mounting plate 130. Optionally, a spring 520 is sleeved on the guide post 310, the spring 520 is located between the first limit convex ring 311 and the second limit convex ring 312, the connecting block 510 of the lifting mechanism 500 is in sliding fit with the guide post 310 and located between the spring 520 and the first limit convex ring 311, when the lifting mechanism 500 is lifted upwards, the connecting block 510 abuts against the first limit convex ring 311 to drive the guide post 310 to move upwards, meanwhile, the second positioning element 220 is connected with the guide post 310, the step structure 224 on the second positioning element 220 abuts against the limit convex part 331 of the limit cylinder 330, the limit cylinder 330 and the installation cylinder 320 are locked and fixed by screws, the threading mechanism 400 is connected with the installation cylinder 320, and when the guide post 310 moves upwards, the second positioning element 220, the limit cylinder 330, the installation cylinder 320 and the threading mechanism 400 are driven to move upwards together. After the threading mechanism 400 moves upwards, a space is formed between the threading mechanism 400 and the first positioning element 210, so that the tubular element 002 which is processed is convenient to remove and replace with a new tubular element 002 to be processed. After the tubular member 002 to be processed is installed on the first positioning member 210, the lifting mechanism 500 is pressed downwards, the connecting block 510 presses the spring 520, the spring 520 transmits the downward pressure to the guide post 310 through the second limiting convex ring 312, and the guide post 310 drives the second positioning member 220 to be inserted into the second pipe section 022, so as to position the tubular member 002. In the descending process of the limiting cylinder 330 and the mounting cylinder 320, the mounting cylinder 320 first contacts the tubular member 002 to be processed, so as to limit the mounting cylinder 320 to continuously descend, in the process, the limiting cylinder 330 is always abutted against the step structure 224, and the second circular table surface 225 of the second positioning member 220 is not abutted against the first pipe section 021. Continuing to apply force to the lifting mechanism 500 to enable the connecting block 510 to descend, and driving the guide post 310 to descend under the action of the elastic force of the spring 520 until the second circular table surface 225 abuts against the first pipe section 021, so as to realize the initial positioning of the tubular element 002 to be processed, wherein in the process, the step structure 224 descends, is separated from the limiting convex part 331 of the limiting cylinder 330 and has a set distance with the limiting convex part 331, and the distance is the length of the external thread processed on the tubular element 002 to be processed; after the second circular table 225 of the second positioning member 220 abuts against the first tube segment 021 and the pulling mechanism 500 continues to be pressed down, the spring 520 continues to be compressed and the force of the second positioning member 220 abutting against the tubular member 002 is increased, so that the locking effect of the tubular member 002 is better. During threading, the handle 700 is operated, and in the process of rotating the installation barrel 320, the pressure is applied to the installation barrel 320, so that the installation barrel 320 moves downwards, the threading die abuts against the tubular piece 002, the threading is performed on the tubular piece 002 through the threading die, and when the threading die rotates relative to the tubular piece 002, the tubular piece 002 cannot rotate relative to the threading die because the tubular piece 002 is clamped by the first positioning piece 210 and the second positioning piece 220. In the process of making the installation section of thick bamboo 320 descend under the exogenic action, spacing section of thick bamboo 330 descends with installation section of thick bamboo 320 together, when descending to spacing section of thick bamboo 330 and bearing against with stair structure 224, spacing section of thick bamboo 330 can not continue to descend, even continue to exert exogenic force on installation section of thick bamboo 320 this moment, installation section of thick bamboo 320 can not continue to descend equally, installation section of thick bamboo 320 can not drive the threading operation of threading continuation to realize the function of the external screw thread of processing setting for length, the machining dimension of external screw thread is accurate reliable.

It should be noted that, the positions of the mounting cylinder 320 and the limiting cylinder 330 can be adjusted to implement the processing of external threads with different lengths. Obviously, in other embodiments, the servo motor may drive the mounting cylinder 320 to descend by a set distance to implement the processing of the external thread with a set length.

Referring to fig. 1, fig. 2 and fig. 7, in other embodiments, the threading device 001 further includes a clamping mechanism 600, the clamping mechanism 600 is disposed on the first mounting plate 130, the clamping mechanism 600 includes a fast clamping structure 003 and a clamping block 610, the clamping block 610 has a clamping groove 611 in a "V" shape, and the fast clamping structure 003 drives the clamping block 610 to slide along a length direction of the first mounting plate 130 to clamp the tubular member 002 between the first positioning member 210 and the second positioning member 220 to prevent the tubular member 002 from rotating during the threading process.

It should be noted that the position of the clamping mechanism 600 on the first mounting plate 130 is adjustable.

The mantle fiber device 001 that this embodiment provided, the position location of tubulose piece 002 is accurate, and tubulose piece 002 non-deformable, and the mantle fiber in-process has guaranteed the axiality of the section of waiting to process of threading die and tubulose piece 002, improves the mantle fiber quality.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A threading device for threading a tubular member, the threading device comprising:

the threading device comprises a rack, a positioning mechanism, a guide mechanism and a threading mechanism for threading the tubular part, wherein the positioning mechanism and the guide mechanism are arranged on the rack, and the threading mechanism and the guide mechanism are in sliding fit along a preset direction and can rotate relatively; the positioning mechanism is used for positioning the tubular piece so that the axis of the section to be processed of the tubular piece extends along the preset direction.

2. The threading device of claim 1, wherein:

the positioning mechanism comprises a first positioning piece, and the first positioning piece is provided with a first positioning part and a first convex part which is convexly arranged on the peripheral surface of the first positioning part; the first positioning part is used for being inserted into one end of the tubular part, and the first convex part is connected with the rack and used for being abutted against the tubular part so as to limit the depth of the first positioning part inserted into the tubular part.

3. The threading device according to claim 2, characterized in that:

the first convex part is provided with a first circular table surface connected with the outer peripheral surface of the first positioning part, and the first circular table surface is used for abutting against the tubular part so as to limit the depth of the first positioning part inserted into the tubular part.

4. A threading arrangement according to claim 2 or 3, characterized in that:

the positioning mechanism further comprises a positioning table arranged on the rack, an arc-shaped slideway is arranged on the positioning table, the first convex part is in sliding fit with the arc-shaped slideway, and when the first convex part slides relative to the arc-shaped slideway, the position of the first positioning part is adjusted, so that the axis of the first positioning part is collinear with the axis of the pipe section, inserted by the first positioning part, of the tubular part.

5. The threading device of claim 1, wherein:

the positioning mechanism further comprises a second positioning piece, and the second positioning piece is provided with a second positioning part and a second convex part which is convexly arranged on the peripheral surface of the second positioning part; the second positioning part is used for being inserted into the other end of the tubular part, and the second convex part is connected with the rack and used for being abutted against the tubular part so as to limit the depth of the second positioning part inserted into the tubular part.

6. The threading device of claim 5, wherein:

the second convex part is provided with a second round table surface connected with the peripheral surface of the second positioning part, and the second round table surface is used for abutting against the inner wall of the tubular part so as to limit the depth of the second positioning part inserted into the tubular part.

7. The threading device of claim 5, wherein:

the guide mechanism comprises a guide post and an installation cylinder, the guide post is in sliding fit with the rack along the preset direction, and the second convex part is connected with the guide post; the mounting cylinder is in sliding fit with the guide column along the preset direction, and the tooth sleeving mechanism is connected with the mounting cylinder.

8. The threading device of claim 7, wherein:

the guide mechanism further comprises a limiting cylinder, the limiting cylinder is in sliding fit with the guide column along the preset direction, and the mounting cylinder is sleeved outside the limiting cylinder and can synchronously slide with the limiting cylinder; the second convex part protrudes outwards along the radial direction of the guide post so as to be abutted against the second convex part when the limiting cylinder slides towards the second convex part, and therefore the sliding range of the limiting cylinder relative to the guide post is limited.

9. Threading device according to claim 7 or 8, characterized in that:

the threading device further comprises a lifting mechanism, the lifting mechanism is arranged on the rack and connected with the guide column, and the guide column is driven to slide in a reciprocating mode relative to the rack, so that the guide column drives the second positioning portion to be inserted into the tubular piece or pulled out of the tubular piece.

10. The threading device of claim 1, wherein:

the threading device further comprises a clamping mechanism, the clamping mechanism is connected with the rack, and the clamping mechanism is used for clamping the peripheral surface of the tubular part so as to prevent the tubular part from rotating in the threading process.