CN115709382A - Magnetic suspension core rod device - Google Patents

Abstract

The invention provides a magnetic suspension core rod device, which comprises a magnetic suspension core rod seat, a plurality of outer magnetic rings arranged in the magnetic suspension core rod seat, a core rod penetrating through the magnetic suspension core rod seat, and a plurality of inner magnetic rings sleeved outside the core rod and arranged corresponding to the outer magnetic rings, wherein the outer magnetic rings and the inner magnetic rings are mutually coupled; the invention can continuously convey pipe fittings for cutting and bending.

Description

A magnetic levitation mandrel device

technical field

The invention relates to the field of pipe bending processing, in particular to a magnetically suspended mandrel device.

Background technique

At present, when pipe fittings are cut and bent, the method of cutting and bending is usually used, and the way of separate processing will lead to more processes, manual turnover of materials is labor-intensive, and the overall processing efficiency is low. When multiple devices are integrated for continuous processing, due to the merging of multiple independent stations, the equipment will inevitably occupy a large area, and after the integration of multiple independent stations, shorter pipe fittings cannot be placed on the entire equipment. processing, and longer pipe fittings are also prone to sagging and bending problems due to gravity.

Contents of the invention

The purpose of the present invention is to provide a magnetic levitation mandrel device capable of continuously transporting pipe pieces for cutting and pipe bending.

In order to solve the above-mentioned technical problems, the present invention provides a magnetic levitation mandrel device, comprising a magnetic levitation mandrel seat, a plurality of outer magnetic rings placed inside the magnetic levitation mandrel seat, a mandrel pierced inside the magnetic levitation mandrel seat, A plurality of inner magnetic rings sleeved on the outside of the mandrel and corresponding to a plurality of outer magnetic rings, the outer magnetic ring and the inner magnetic ring are coupled to each other, when the pipe is passed through the magnetic levitation mandrel seat, the outer magnetic ring is located outside the pipe , the inner magnetic ring and the core rod are located inside the pipe.

Further, an outer guide ring is provided between two adjacent outer magnetic rings, and an inner guide ring is provided between two adjacent inner magnetic rings.

Further, the magnetic levitation mandrel seat is set on the slide table, and the two sides of the slide table are movable on the guide rails, and the middle part of the slide table is connected with a screw rod. When the screw rod rotates relative to the slide table, the slide table moves along the rails to move.

Further, at least two sets of guide wheels are connected to the slide table, and at least two sets of guide wheels are placed on both sides of the magnetic levitation mandrel seat.

Further, the guide wheel set includes at least two rotatable guide wheels arranged on the slide table. When the pipe is passed through the magnetic levitation mandrel seat, the parts of the pipe located on both sides of the magnetic levitation mandrel seat are located between at least two guide wheels. .

The beneficial effect of the present invention is that: the pipe material can be continuously conveyed through the magnetic levitation mandrel device without stopping midway or cutting the material before conveying, which greatly increases the processing efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural schematic diagram of the straightening component in the present invention.

Fig. 3 is a structural schematic diagram of the magnetic levitation mandrel device in the present invention.

Fig. 4 is an internal structure diagram of the magnetic levitation mandrel device in the present invention.

Fig. 5 is a structural schematic diagram of the feeding and feeding parts in the present invention.

Fig. 6 is a schematic structural view of the chipless cutting trolley device in the present invention.

Fig. 7 is a top view of the chipless cutting trolley device in the present invention.

Fig. 8 is a sectional view along line B-B of Fig. 7 of the present invention.

Fig. 9 is a partially enlarged view of Fig. 8 in the present invention.

Fig. 10 is a side view of the chipless cutting trolley device in the present invention.

Fig. 11 is a cross-sectional view along line A-A of Fig. 10 of the present invention.

Fig. 12 is a partially enlarged view of Fig. 11 in the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and The above terms should not be construed as limiting the present invention because the description is simplified rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity can be multiple, and the term "a" cannot be understood as a limitation on the quantity.

As shown in Figures 1-12, the present invention provides a magnetic levitation mandrel device, which is suitable for automatic pipe bending machines, wherein the automatic pipe bending machine includes coil feeding racks 1 and straightening components 2 arranged in sequence , magnetic levitation mandrel device 3, feeding and feeding part 4, chipless cutting trolley device 5 and pipe bending part 6, wherein, one end of the pipe part 7 is wound around the outer circumference of the coil feeding rack 1, and the other end passes through the straightening part 2 in sequence , the magnetic levitation mandrel device 3 , the feeding and feeding part 4 and the chipless cutting trolley device 5 , the pipe fitting 7 is bent by the pipe bending part 6 .

Specifically, the raw material of the pipe fittings is in the form of a coil, and the coil is wound and fixed on the coil loading rack, and then one end of the pipe is pulled out and introduced into the position of the straightening part, and the coil form is straightened into a flat shape by the straightening part Pipe fittings, and then use the magnetic levitation mandrel device to support the inside of the pipe fittings to ensure the pipe bending effect when the subsequent pipe bending parts bend the pipe fittings. In addition, before the pipe fittings are bent, they will also pass through the feeding parts and chip-free cutting The trolley device enables the pipe fittings to be pre-cut at the specified position of the pipe fittings through the chipless cutting trolley device, and then with the cooperation of the feeding and feeding parts, the pre-cut parts are sent to the bending pipe parts for pipe bending processing, and manually or The automatic machine breaks the pre-cut position, which not only ensures the continuous transportation of the pipe fittings, but also ensures that the pre-cutting and breaking methods can improve the cutting effect of the pipe fittings.

Among them, the main structure of the coil feeding rack is a disc-shaped support frame, and the coil is wound on the outer periphery of the disc-shaped support frame. At the same time, an oil mist nozzle is connected to the center of the support frame, and the coil is wound on the coil. One end port on the material rack is connected to the oil mist nozzle, and the oil mist nozzle is connected to the external oil supply equipment through the oil pipe, etc., and the oil mist is sprayed on the inner wall of the coil through the oil mist nozzle, so that there is oil mist inside the pipe fittings. Lubricating effect, and then increase the use effect of the subsequent magnetic levitation mandrel device.

In particular, the structure of the pipe bending part in this solution is the same as that of the existing pipe bending equipment, and will not be described in detail here.

It is worth mentioning that the pipe fittings processed in this program are copper pipes.

Preferably, the magnetic levitation mandrel device 3 includes a magnetic levitation mandrel seat 31, a plurality of outer magnetic rings 32 placed inside the magnetic levitation mandrel seat 31, a core rod 33 pierced inside the magnetic levitation mandrel seat 31, and a core rod sheathed on the core rod 33 outside and a plurality of inner magnetic rings 34 corresponding to a plurality of outer magnetic rings 32, the outer magnetic ring 32 and the inner magnetic ring 34 are mutually coupled and arranged, when the pipe fitting 7 passes through the magnetic levitation mandrel seat 31, the outer magnetic ring 32 Located outside the pipe fitting 7 , the inner magnetic ring 34 and the core rod 33 are located inside the pipe fitting 7 ; an outer guide ring 35 is provided between two adjacent outer magnetic rings 32 , and an inner guide ring 36 is provided between two adjacent inner magnetic rings 34 .

Specifically, through the mutual coupling arrangement of the outer magnetic ring and the inner magnetic ring, the core rod is suspended in the magnetic levitation mandrel seat under the action of magnetic force. And between the magnetic levitation mandrel seat, and then support the inside of the pipe fitting through the mandrel, so as to improve the stability of the pipe fitting in the subsequent pipe bending process.

At the same time, due to the setting of the outer guide ring and the inner guide ring, when the pipe is passed through the magnetic levitation mandrel seat, it can be guided by the inner and outer guide rings to ensure the accurate movement of the pipe, and it can also be guided by the inner and outer guides. The ring separates and fixes the inner and outer magnetic rings to ensure the stability between the inner and outer magnetic rings and further increase the effect of the core rod in use.

Wherein, the outer magnetic ring and the inner magnetic ring are both made of magnets, and the outer magnetic ring and the inner magnetic ring attract each other, so that the part of the core rod with the inner magnetic ring is stably limited to the position of the magnetic levitation mandrel seat.

Preferably, the magnetic levitation mandrel holder 31 is arranged on the slide table 37, and the two sides of the slide table 37 are movably arranged on the guide rail 38, and the middle part of the slide table 37 is connected with a screw rod 39, when the screw rod 39 is connected to the slide table When 37 rotates, slide table 37 moves along guide rail 38.

Specifically, since the bending position of the pipe fittings and the radius of the arc generated by the bending are different, the magnetic levitation mandrel seat is set on the sliding table, and the magnetic levitation mandrel seat and the inside of the magnetic levitation mandrel seat are driven by moving the slide table. The core rod is moved to ensure that the core rod can stably and adaptively support the inside of the pipe fitting, increasing the pipe bending effect.

Among them, when the sliding table is moving, the screw rod is driven to rotate by the driving parts such as the servo motor and the transmission mechanism such as the synchronous pulley and the synchronous belt. During the process, the sliding table can be driven to move linearly along the guide rail with the screw connection, and then the core rod can be stably driven to move.

Preferably, at least two groups of guide wheel groups are connected to the slide table 37, and at least two groups of guide wheel components are placed on both sides of the magnetic levitation mandrel seat 31, and the guide wheel groups include at least two rotatable wheels located on the slide table 37. guide wheels 310, when the pipe 7 passes through the magnetic levitation mandrel seat 31, the parts of the pipe 7 located on both sides of the magnetic levitation mandrel seat 31 are located between at least two guide wheels 310.

Specifically, in order to ensure that the mandrel can accurately support the inside of the pipe fittings, this scheme guides and positions the pipe fittings entering the magnetic levitation mandrel seat and the pipe parts leaving the magnetic levitation mandrel seat through the guide wheel sets on both sides of the magnetic levitation mandrel seat , so that the pipe fittings at the two places are clamped and guided by at least two guide wheels, and cooperate with the rotatable setting of the guide wheels to reduce the friction between the guide wheels and the pipe fittings, and improve the accuracy of cooperation between the pipe fittings and the core rod.

Preferably, the chipless cutting trolley device 5 includes a fixed seat 51, a rotatable main shaft 52 arranged on the fixed seat 51, and a cutting blade 53 is provided at the end of the main shaft 52, when the pipe fitting 7 is passed through the main shaft 52 and the main shaft 52 rotates , the cutting blade 53 pre-cuts the pipe 7.

Specifically, after passing through the magnetic levitation mandrel seat, the pipe will continue to pass through the position of the main shaft. At this time, the fixed seat is moved and the main shaft is moved to the designated position, so that the cutting blade is located at the position where the pipe is waiting for pre-cutting, and then the main shaft is rotated To drive the cutting blade to pre-cut the outer circumference of the pipe, so that the pre-cut position of the pipe can be broken by manual or automatic machine.

Wherein, the pre-cutting refers to a circular cutting process without cutting the outer circumference of the pipe by a cutting blade, in order to facilitate the subsequent breaking step.

In one embodiment of this solution, a servo motor is provided on one side of the fixed seat, and the output end of the servo motor and the end of the main shaft all have synchronous wheels, and the two synchronous wheels are connected through a synchronous pulley, so that the servo When the motor is started, it can drive the main shaft to rotate, and then drive the cutting blade to perform circular cutting on the outer circumference of the pipe fitting.

Preferably, the outer periphery of the main shaft 52 is provided with a sliding sleeve 54, the sliding sleeve 54 can move axially relative to the main shaft 51, the end of the main shaft 51 is provided with a jaw seat 55, and the jaw seat 55 is provided with a plurality of rotatable clamps along the circumference. Claw 56, the jaw 56 has a first inclined surface 57 near the side of the sliding outer cover 54, and the first inclined surface 57 is arranged in cooperation with the sliding outer cover 54. When the direction of the clamping jaw seat 55 moves, the clamping jaw 56 clamps the pipe piece 7 .

Specifically, when it is necessary to transport and feed the pipe fittings to the elbow parts, move the sliding outer cover towards the direction of the jaw seat, and the sliding outer cover will touch the first inclined surface of the clamping jaw during the movement, and then the sliding outer cover will In the process of continuing to move, the first inclined surface is used to push the jaws to rotate and clamp the position of the pipe, and then the pipe is clamped and fixed by multiple jaws. At this time, the pipe can be transported a specified distance only by moving the fixing seat.

Wherein, the position where the jaws rotate relative to the jaw seat is provided with a tension spring or a coil spring, so that when the jaws are not pushed by the sliding sleeve, the jaws will move away from the jaw under the action of the coil spring or the tension spring. The direction of the pipe fittings is naturally opened so that the pipe fittings can freely enter and exit the spindle position.

It is worth mentioning that this solution also has a centering sleeve inside the clamping jaw seat, through which the initial position of the pipe can be limited within a certain range, so as to facilitate the stability of the clamping jaws when clamping the pipe.

Preferably, the side of the jaw seat 55 away from the main shaft 52 is connected with a slider 59, the slider 59 can move radially relative to the jaw seat 55, and an elastic member is connected between the slider 59 and the jaw seat 55, and the cutting The blade 53 is connected to the slide block 59, the end of the slide cover 54 near the jaw seat 55 has a gland 510, and the side of the gland 510 near the slide block 59 has a second inclined surface 511, and the slide block 59 is close to the end of the gland 510. One side has a third inclined surface 512, and the second inclined surface 511 and the third inclined surface 512 are attached to each other. When the sliding sleeve 54 moves toward the direction of the jaw seat 55, the slider 59 moves away from the pipe 7. move.

Specifically, when it is necessary to pre-cut the outer circumference of the pipe with the cutting blade, the sliding sleeve is moved in a direction away from the jaw seat, so that the sliding sleeve drives the gland to move away from the jaw seat. At this time, due to the second The cooperation between the inclined surface and the third inclined surface, during the movement of the gland, the second inclined surface will push and press the third inclined surface, so that the slider moves radially relative to the jaw seat, and the slider drives The cutting blade approaches the pipe so that the cutting blade can pre-cut the pipe, and after the pre-cut is completed, the sliding jacket moves in the opposite direction to make the gland move in the opposite direction, and the second inclined surface no longer pushes the third inclined surface , and push the slider to reset by the elastic force of the elastic member, and then mobilize the cutting blade to reset and move away from the pipe, so as to avoid interference between the two processes of clamping the pipe and cutting the pipe with the cutting blade.

Wherein, the elastic member adopts a spring, and the cutting blade is fixed on one side of the slide block through parts such as a fixed shaft and a nut.

Preferably, one side of the fixed seat 51 has a driving member 513 , the end of the sliding sleeve 54 close to the driving member 513 is movably connected with a driving sleeve 514 , and the feed fork 515 is used to connect the output end of the driving member 513 and the driving sleeve 514 .

Specifically, when the sliding jacket needs to be moved, the feed fork is pushed or pulled by starting the driving part, so that the feed fork pulls or pushes the driving sleeve. When the sleeve moves, the sliding jacket will be moved synchronously to achieve the purpose of moving the sliding jacket.

Among them, the structure of the feed fork is similar to the principle of leverage. When the feed fork is pushed by the driving part, the feed fork pulls the drive sleeve, and when the feed fork is pulled by the drive part, the feed fork pulls the drive sleeve. The fork pushes the drive sleeve.

In particular, the flexible connection between the sliding sleeve and the driving sleeve means that the driving sleeve can push or pull the sliding sleeve to move, and the sliding sleeve can rotate relative to the driving sleeve. In an embodiment of the program, the sliding sleeve The outer circumference is provided with an annular groove, and the inner circumference of the driving sleeve has an annular structure located in the annular groove, so that the required movable connection is formed between the sliding outer sleeve and the driving sleeve.

In an embodiment of the solution, the driving part adopts structures such as a servo electric cylinder and an electric push rod.

Preferably, the straightening component 2 includes at least two oppositely arranged initial guide wheels 21, an oil box 22, a material-free detection device 23, a circle straightening wheel set, a longitudinal straightening wheel set and a horizontal straightening wheel set arranged in sequence. The wheel set includes at least two oppositely arranged alignment wheels 24, and the longitudinal alignment wheel set includes a plurality of longitudinal alignment wheels 25, and the plurality of longitudinal alignment wheels 25 are arranged alternately on both sides of the vertical direction of the pipe fitting 7, and the horizontal alignment wheels The set includes a plurality of horizontal straightening wheels 26 , and the multiple horizontal straightening wheels 26 are alternately arranged on both sides of the pipe 7 in the horizontal direction.

Specifically, when one end of the coil tube passes through the straightening component, the coil tube in the bent state is firstly straightened through the initial guide wheel, and the outer wall of the tube is lubricated when the tube passes through the position of the oil box, and then the tube passes through the alignment wheel in turn The pipe fittings are calibrated multiple times by the vertical straightening wheel set and the horizontal straightening wheel set to increase the calibration effect of the pipe fittings and avoid the coiled pipe bending state during subsequent pipe fitting processing.

It is worth mentioning that at least two oppositely arranged calibration wheels in the calibration wheel group are arranged in opposite ways, that is, the two calibration wheels are tangent to each other. Calibrate and stretch; and the multiple longitudinal straightening wheels in the longitudinal straightening wheel set are staggered on both sides of the vertical direction of the pipe, so the longitudinal straightening wheels are mainly used for straightening the vertical direction of the pipe ; Similarly, a plurality of horizontal straightening wheels in the horizontal straightening wheel set are arranged in a staggered manner on both sides of the horizontal direction of the pipe fittings, so the horizontal straightening wheels are mainly used to straighten the horizontal direction of the pipe fittings, and continuously During the three alignments, the fittings are calibrated from the coil form to the straight form.

Among them, there is a sponge inside the oil box. After the volatile oil is introduced into the oil box, the sponge absorbs the volatile oil, so that when the pipe fittings pass through the oil box, the surface of the pipe fittings can be lubricated by the sponge, and the inner wall of the pipe fittings is lubricated by the coil feeding rack. , so that both the inner and outer walls of the pipe are lubricated, and then when the pipe passes through the magnetic levitation mandrel seat, there is a lubrication effect between the pipe and the outer magnetic ring, between the pipe and the inner magnetic ring (core rod), reducing the number of pipes and parts The degree of wear of the components.

In particular, the material-free detection device is mainly used to detect the existence of pipe fittings and straightening parts or the equipment. The material-free detection device mainly includes a gravity wheel that can move up and down for a certain stroke, and a travel switch at the bottom of the material-free detection device. When the pipe passes through the straightening part, the gravity wheel is lifted by the pipe, and then the gravity wheel is lifted by the pipe to the upper part. When there is no pipe, the gravity wheel falls under the influence of gravity, and makes the gravity wheel fall and press on the travel switch. At this time, the travel switch is turned on and a signal is issued to indicate that the pipe fitting is empty.

Preferably, the feeding and feeding part 4 includes a guide rail 41 and a movable feeding platform 42 arranged on the guide rail 41 , and the chipless cutting trolley device 5 is installed on the feeding platform 42 .

Specifically, the chipless cutting trolley device is driven to move by the way that the feeding platform moves along the guide rail, and then reaches the designated position of the clamping jaws to hold the pipe fittings and feeds the pipe fittings, and the cutting blade moves to the position where the pipe fittings need to be pre-cut, etc. Purpose.

In one embodiment of this solution, there is a rack on one side of the guide rail, and a rotatable gear is provided for the movement of the feeding platform. , through the cooperation of the rack and pinion, the feeding platform is driven to move along the guide rail.

The present invention is not limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the inspiration of the present invention, but no matter make any changes in its shape or structure, all those with the same or similar features as the present application Approximate technical solutions all fall within the protection scope of the present invention.

Claims (5)

1. A magnetic levitation core rod device is characterized in that: including magnetic suspension mandrel seat (31), arrange a plurality of outer magnet rings (32) of magnetic suspension mandrel seat (31) inside in, wear to locate magnetic suspension mandrel seat (31) inside core bar (33), core bar (33) outside and a plurality of outer magnet rings (32) correspond a plurality of interior magnet rings (34) that set up are located to the cover, outer magnet rings (32) and interior magnet ring (34) intercoupling set up, when pipe fitting (7) wear to establish through magnetic suspension mandrel seat (31), outer magnet rings (32) are located pipe fitting (7) outside, interior magnet ring (34) and core bar (33) are located inside pipe fitting (7).

2. A magnetically suspended mandrel assembly according to claim 1, characterised in that: an outer guide ring (35) is arranged between two adjacent outer magnetic rings (32), and an inner guide ring (36) is arranged between two adjacent inner magnetic rings (34).

3. The magnetically suspended mandrel assembly of claim 1, wherein: magnetic suspension mandrel seat (31) is located on slip table (37), and on slip table (37) both sides mobilizable the locating guide rail (38), and slip table (37) middle part is worn to establish and is connected with lead screw (39), when lead screw (39) rotated for slip table (37), slip table (37) were removed along guide rail (38).

4. A magnetically suspended mandrel assembly according to claim 3, wherein: at least two groups of guide wheel sets are connected on the sliding table (37) and are respectively arranged on two sides of the magnetic suspension mandrel seat (31).

5. The magnetically suspended mandrel assembly of claim 4, wherein: the guide wheel set comprises at least two rotatable guide wheels (310) arranged on the sliding table (37), and when the pipe fitting (7) penetrates through the magnetic suspension mandrel seat (31), the parts of the pipe fitting (7) positioned on the two sides of the magnetic suspension mandrel seat (31) are positioned between the at least two guide wheels (310).

Images