CN202037265U - Pipe expander - Google Patents
Pipe expander Download PDFInfo
- Publication number
- CN202037265U CN202037265U CN2011200609505U CN201120060950U CN202037265U CN 202037265 U CN202037265 U CN 202037265U CN 2011200609505 U CN2011200609505 U CN 2011200609505U CN 201120060950 U CN201120060950 U CN 201120060950U CN 202037265 U CN202037265 U CN 202037265U
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- Prior art keywords
- expander
- pipe
- internal mold
- mold
- external mold
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Abstract
The utility model discloses a pipe expander, which comprises a pipe expanding mechanism, a limit mechanism, a power device and a contactless linear displacement sensor. The pipe expanding mechanism comprises an internal mould and an external mould; the internal mould is a table or a cone; the external mould is an internally hollow round pipe sleeved outside the internal mould and formed by splicing a plurality of arc pipes; the shape of the inner wall of the external mould is matched with that of the outer wall of the internal mould; the limit mechanism is positioned outside the external mould; a moving groove is arranged inside the limit mechanism; the outer surface of the external mould is correspondingly provided with a guide plate; the guide plate is embedded into the moving groove and moves in the moving groove; the power device is connected with the internal mould and drives the internal mould to move; and the contactless linear displacement sensor is used for metering the stroke of the internal mould. Owing to the contactless linear displacement sensor, abrasion caused by friction is avoided, stable precision of measurement and control is ensured, and further the service life of the pipe expander is prolonged. Moreover, the precision cannot be affected by vibration of equipment, the control precision can reach 0.001 millimeter so that control is more precise, and screw rods are omitted so that cost is lower.
Description
Technical field
The utility model belongs to field of machining, and more particularly, the utility model relates to the stable pipe expander of realizing high accuracy control of a kind of energy.
Background technology
The effect of pipe expander is that the tubule road that diameter is less is processed into the bigger extra heavy pipe road of diameter, perhaps will be shaped to cylindric near housing expander cylindraceous.
Chinese patent 200780008192.9 discloses a kind of mechanical expander, it is inserted in cone piece (2) and mould (1) in the tube end that needs expander, be fixed under the state in the tube end cone piece (2) pipe fitting vertically to outside drawing at mould (1), make mould (1) carry out expander to tube end by wedging action thus to the expansion of the radial direction outside.Trunk (1A) periphery in mould (1), for example taper of big 1MM of radius of the outer peripheral face of the radius ratio mouth of pipe side of the outer peripheral face of formation pipe inner end.Use this mechanical expander that tube end is carried out expander and make seamless steel pipe.Can produce characteristic and the good seamless steel pipe of pipe end dimensional accuracy that to bring into play on-the-spot welding procedure excellence when between the laying place is welded many steel pipes by circumference, connecting.
Chinese patent 200720099802.8 discloses a kind of full-automatic type multicylinder hydraulic pipe expander, belongs to metal tube processing equipment technical field, and it is little to be intended to solve existing full-automatic type hydraulic extend pipe machine thrust, can not satisfy the problem of heavy caliber pipe expander specification requirement.It adopts master cylinder is the master cylinder of three～six roots of sensation oil cylinder, master cylinder support and master cylinder connection frame all are fitted with mounting, the pipe expander underframe is the pipe expander mounting that is fitted with feeding mechanism, master cylinder support, master cylinder connection frame, three push pedals, butt tube mouthpart, position-limit mechanism core on the underframe successively, sets upright support, feeding mechanism connects the master cylinder support, on master cylinder support and master cylinder connection frame, be fitted with the hydraulic pressure master cylinder, the master cylinder rear portion connects three push pedals, and in three push pedals
With on the master cylinder connection frame hydraulic gate is housed, butt tube mouthpart and set upright the position-limit mechanism core of ining succession on the support, the position-limit mechanism core is equipped with heater coil, sets upright the support rear portion and connects discharging mechanism.Its novel structure is applicable to the pushing hole enlargement operation of various tubing.
Chinese patent 200620024841.7 discloses the full-automatic type pipe expander of a kind of hydraulic pressure, belongs to metal tube processing equipment technical field.It is provided with the pipe expander underframe, hydraulic mechanism, and intermediate frequency coil, core print, no good, roller frame, motorized speed reducer, hydraulic clamp mechanism, raw material are to mouthpart, open-type centralizing bracket, hydraulic pressure roller, hydraulic clamp feed appliance and roller driven type feed mechanism.Oneself is back to the preceding support that is fitted with successively on the pipe expander underframe, cylinder bracket, roller frame, raw material are to mouthpart and hydraulic clamp mechanism, on support and cylinder bracket, be equiped with the hydraulic pressure master cylinder, on roller frame, be fitted with push pedal and hydraulic clamp feed appliance respectively, hydraulic clamp mechanism rear portion is fitted with the hydraulic pressure roller, wear the core bar of the core print of ining succession to the central part of back push pedal in hydraulic clamp mechanism, the core print load is on the open-type centralizing bracket, intermediate frequency coil is housed on core print, and is equiped with roller driven type feed mechanism at the cylinder bracket rear portion.Its novel structure is applicable to that various metal tube hole enlargements become required novel pipe.
Chinese patent 200920122607.1 discloses a kind of turntable type automatic tube expander, it comprises frame, be arranged at the tube blank fixing mechanism of frame one end, be fixedly installed in the expander head driving apparatus of the other end of frame, the push rod that connects the expander head driving apparatus, be provided with round turntable between tube blank fixing mechanism and the expander head driving apparatus, the center of round turntable is fixedly connected with an end of central shaft, and the other end of central shaft is arranged with the bearing that is fixed on the frame; Offer at least 2 expander head fixing holes on the rotating disk, expander head fixing hole all is positioned at and intersects with the extended spot of push rod and be on the concentric circles in the center of circle with the center of round turntable, activity is inserted with the required expander head of pipe processing in the expander head fixing hole, and the afterbody of the head of push rod and expander head has the bindiny mechanism that cooperatively interacts.Compared with prior art, the utlity model has simple and reasonable, floor space is little, the advantage of high efficiency.
Chinese patent 200920278243.6 discloses a kind of mandrel expander equipment of expander equipment, particularly assembled camshaft.Its equipment is equipped with on lathe bed successively: by bearing one, the second-class mandrel fixed mechanism of forming of bearing, the expander mechanism that is formed by nut, conical pull head, pull bar, clip, connection screw etc., the hydraulic mechanism of forming by piston rod head and oil cylinder etc., and guard shield and guide rail etc.Mandrel is placed on the fixed mechanism, pull bar is passed mandrel, with nut conical pull head is fixed on the pull bar afterbody then, rod head with clip be connected screw and be fixed on the piston rod head, conical pull head is by pull bar traction passing through mandrel behind the opening device.Because the conical pull head external diameter greater than the mandrel internal diameter, is realized expander.This equipment volume is less, simple in structure, easy operating, can realize that the expander of assembled camshaft is installed, and guarantees that part such as cam is connected with the tight of mandrel.
In the existing technical scheme, use rotary encoder to measure stroke usually, and then the precision of control expander.Specifically promote the rotary encoder motion by screw mandrel, for example screw mandrel whenever revolves and turns around, and advances 5 millimeters, and rotary encoder sends 600 pulses, and then precision is the 5/600=0.0083 millimeter.The shortcoming of this mode is: 1, the screw mandrel transmission has friction, and is easy to wear, and then influences its precision and life-span; 2, the vibration of expander equipment can influence its precision, and the fraction defective of product is promoted; 3, precision is less; 4, cost height.
Summary of the invention
At the shortcoming of prior art, the purpose of this utility model provides a kind of pipe expander, and it can stablize the control of realization high accuracy.
To achieve these goals, the technical solution of the utility model is:
A kind of pipe expander, be used for will finish the housing expander approaching cylindraceous of seam postwelding be shaped to cylindricly, it comprises:
Expander mechanism, it comprises internal mold and external mold; Internal mold is stage body or cone, and the less end in its cross section is the head of expander mechanism, and the bigger end in cross section is the afterbody of expander mechanism; External mold is the interior empty pipe that is enclosed within outside the internal mold; External mold is spliced by a plurality of arc tubes; The inner wall shape of external mold matches with the outer wall shape of internal mold;
Position-limit mechanism, it is positioned at outside the external mold, and its inside is provided with movement slots; The outer surface correspondence of external mold is provided with guide plate, and guide plate embeds in the movement slots and moves in described movement slots;
Power set, it links to each other with internal mold, is used to drive the direction motion of internal mold to expander mechanism head;
Contactless linear displacement transducer is used to measure the stroke of internal mold.
During use, pipe to be expanded is enclosed within on the external mold, power set drive the direction motion of internal mold to expander mechanism head, make external mold to extending out, and then the diameter of expander are treated in support greatly.Contactless linear displacement transducer measures the stroke of internal mold, can calculate the size that external mold extends out according to the gradient of internal mold, promptly treats the sub-enlarged diameter part of expander.Like this can be by the Stroke Control size that extend out of control internal mold.Gradient as internal mold is 1: 10, and when promptly the stroke of internal mold was 10 millimeters, diameter extended out 1 millimeter, and the precision of contactless linear displacement transducer is 0.01 millimeter, and then can control the precision that extends out diameter is 0.001 millimeter.The existence of position-limit mechanism evenly extends out external mold integral body under the effect of internal mold, avoids producing the inconsistent diameter that extends out.
In an embodiment of the present utility model, this contactless linear displacement transducer is grating displacement sensor or magnetic grid displacement transducer.
In an embodiment of the present utility model, position-limit mechanism is positioned at the afterbody of expander mechanism, is surrounded on outside the external mold.
In an embodiment of the present utility model, the cross section of internal mold is for waiting polygon, and the cross section that the external mold inside divides is the polygon that waits with same edge number.Particularly, the cross section of internal mold such as can be at octagon, and the cross section that the external mold inside divides is also for waiting octagon.Accordingly, the interior empty pipe of external mold for being spliced by eight identical arc tubes, each arc tube are the circular arc of 45 degree.
In an embodiment of the present utility model, power set are oil cylinder, specifically can be hoist cylinder, and promptly internal mold moves up and down in vertical direction.
In an embodiment of the present utility model, power set link to each other by connecting rod with internal mold, and power set drive the internal mold motion by drive link.This embodiment also comprises frame, and frame is provided with pilot hole, is connected with guide post on the connecting rod simultaneously, and guide post moves in pilot hole, deflection can not take place with the direction that guarantees mechanism kinematic.
Excessively for fear of the moving region of oil cylinder cause not wishing the consequence that occurs, frame also comprises stop collar, is used to limit the moving region of connecting rod, can certainly limit the moving region of oil cylinder, and the two does not conflict.Particularly, this stop collar comprises upper limit cover and lower limit cover, wherein goes up the upper limit that the upper limit cover limits the moving region, and the lower limit cover limits the lower limit of moving region.
Compared with prior art, the utlity model has following beneficial effect: 1,, avoided fricative wearing and tearing, not only guaranteed the stable accuracy of measuring and controlling, and improved service life owing to used contactless displacement transducer; 2, its precision can be by the vibration effect of equipment; 3, precision can reach 0.001 millimeter, and is more accurate; 4, saved the use of screw mandrel, cost is lower.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of the utility model pipe expander first embodiment;
Fig. 2 is the cross-sectional structure schematic diagram of the utility model pipe expander first embodiment external mold;
Fig. 3 is the structural representation of the utility model pipe expander second embodiment.
The specific embodiment
Figure 1 shows that first embodiment of the utility model pipe expander, it comprises: expander mechanism, position-limit mechanism 103, power set such as hoist cylinder 2, contactless linear displacement transducer such as grating displacement sensor (grating chi), frame.
Wherein, expander mechanism comprises internal mold 101, external mold 102.Internal mold 101 is a stage body, and its gradient is 1: 10, and the less end in its cross section is the head of expander mechanism, and the bigger end in cross section is the afterbody of expander mechanism.External mold 102 is for being enclosed within the interior empty pipe outside the internal mold 101; External mold is spliced by a plurality of arc tubes; The inner wall shape of external mold 102 matches with the outer wall shape of internal mold 101.The cross section of internal mold 101 is for waiting octagon, and the cross section that external mold 102 insides divide is also for waiting octagon (as shown in Figure 2).Accordingly, the interior empty pipe of external mold 102 for being spliced by eight identical arc tubes, each arc tube are the circular arc of 45 degree.
Position-limit mechanism 103 is round table-like, and the afterbody that it is positioned at expander mechanism is surrounded on outside external mold 102 afterbodys; Position-limit mechanism 103 inside are provided with circular movement slots; The peripheral correspondence of external mold 102 afterbodys is provided with guide plate 104, and this guide plate 104 embeds in the movement slots of position-limit mechanisms 103 and moves in movement slots.
Frame is provided with and comprises stop collar, is used to limit the moving region of connecting rod, and it comprises upper limit cover 501 and lower limit cover 502.
Figure 3 shows that second embodiment of the utility model pipe expander, the difference of itself and first embodiment is that frame is provided with pilot hole 601, is connected with guide post 602 on the connecting rod simultaneously, guide post 602 moves in pilot hole 601, deflection can not take place with the direction that guarantees mechanism kinematic.
Though the utility model discloses as above with preferred embodiment, be not in order to limit the scope that the utility model is implemented.Any those of ordinary skill in the art, in not breaking away from invention scope of the present utility model, when doing a little improvement, promptly every equal improvement of doing according to the utility model should be invention scope of the present utility model and contains.
Claims (10)
1. pipe expander, the housing expander approaching cylindraceous that is used for finishing the seam postwelding is shaped to cylindric, and it comprises:
Expander mechanism, it comprises internal mold and external mold; Described internal mold is stage body or cone; Described external mold is the interior empty pipe that is enclosed within outside the described internal mold, and it is spliced by a plurality of arc tubes; The inner wall shape of described external mold matches with the outer wall shape of described internal mold;
Position-limit mechanism, it is positioned at outside the described external mold, and its inside is provided with movement slots; The outer surface correspondence of described external mold is provided with guide plate, and described guide plate embeds in the described movement slots and moves in described movement slots;
Power set, it links to each other with described internal mold, is used to drive described internal mold motion;
Contactless linear displacement transducer is used to measure the stroke of described internal mold.
2. pipe expander as claimed in claim 1 is characterized in that, described contactless linear displacement transducer is grating displacement sensor or magnetic grid displacement transducer.
3. pipe expander as claimed in claim 1 is characterized in that, described position-limit mechanism is positioned at the long-pending bigger end in inside partial cross-section of described external mold, and is surrounded on outside the described external mold.
4. pipe expander as claimed in claim 1 is characterized in that, the cross section of described internal mold is for waiting polygon, and the cross section that described external mold inside divides is the polygon that waits with same edge number.
5. pipe expander as claimed in claim 4 is characterized in that, the cross section of described internal mold is for waiting octagon, and the cross section that described external mold inside divides is for waiting octagon.
6. pipe expander as claimed in claim 5 is characterized in that, the interior empty pipe of described external mold for being spliced by eight identical arc tubes.
7. pipe expander as claimed in claim 1 is characterized in that, described power set are oil cylinder.
8. pipe expander as claimed in claim 1 is characterized in that, described power set link to each other by connecting rod with described internal mold.
9. pipe expander as claimed in claim 8 is characterized in that, also comprises frame; Described frame is provided with pilot hole, is connected with guide post on the described connecting rod, and described guide post moves in described pilot hole.
10. pipe expander as claimed in claim 8 is characterized in that described frame also comprises stop collar, is used to limit the moving region of described connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200609505U CN202037265U (en) | 2011-03-10 | 2011-03-10 | Pipe expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200609505U CN202037265U (en) | 2011-03-10 | 2011-03-10 | Pipe expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202037265U true CN202037265U (en) | 2011-11-16 |
Family
ID=44964730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200609505U Expired - Fee Related CN202037265U (en) | 2011-03-10 | 2011-03-10 | Pipe expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202037265U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513460A (en) * | 2011-12-16 | 2012-06-27 | 大连三高科技发展有限公司 | Steel pipe end sizing mill assembly with diameter expanding function |
| CN105114749A (en) * | 2015-08-18 | 2015-12-02 | 深圳海油工程水下技术有限公司 | Device for propping inner wall of pipe body open |
| CN105149427A (en) * | 2015-09-25 | 2015-12-16 | 北京灵隆科技有限公司 | Machining forming device and method for speaker mesh |
| CN107583971A (en) * | 2017-10-17 | 2018-01-16 | 柳州北斗星液压科技有限公司 | A kind of device available for steel ring finishing circle |
| CN113578986A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692A (en) * | 2021-06-29 | 2021-11-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
-
2011
- 2011-03-10 CN CN2011200609505U patent/CN202037265U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513460A (en) * | 2011-12-16 | 2012-06-27 | 大连三高科技发展有限公司 | Steel pipe end sizing mill assembly with diameter expanding function |
| CN105114749A (en) * | 2015-08-18 | 2015-12-02 | 深圳海油工程水下技术有限公司 | Device for propping inner wall of pipe body open |
| CN105149427A (en) * | 2015-09-25 | 2015-12-16 | 北京灵隆科技有限公司 | Machining forming device and method for speaker mesh |
| CN105149427B (en) * | 2015-09-25 | 2019-10-18 | 北京京东尚科信息技术有限公司 | The machine-shaping device and method of speaker net |
| CN107583971A (en) * | 2017-10-17 | 2018-01-16 | 柳州北斗星液压科技有限公司 | A kind of device available for steel ring finishing circle |
| CN113578986A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136A (en) * | 2021-06-29 | 2021-11-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692A (en) * | 2021-06-29 | 2021-11-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113579136B (en) * | 2021-06-29 | 2022-08-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113578986B (en) * | 2021-06-29 | 2022-08-02 | 中联重科股份有限公司 | Pipe fitting processing equipment |
| CN113600692B (en) * | 2021-06-29 | 2022-08-05 | 中联重科股份有限公司 | Pipe fitting processing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510620 A, building 25, building A, 567 Tianhe North Road, Tianhe District, Guangzhou, Guangdong Patentee after: GUANGZHOU YUEYAN INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 510620 A, building 25, building A, 567 Tianhe North Road, Tianhe District, Guangzhou, Guangdong Patentee before: GUANGZHOU YUEYAN HYDRAULIC & ELECTRIC MACHINE Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 510620, Guangdong, Guangzhou province Panyu District town hall village, Southern China New Town Road, No. 2 factory building Patentee after: GUANGZHOU YUEYAN INTELLIGENT EQUIPMENT CO.,LTD. Address before: 510620 A, building 25, building A, 567 Tianhe North Road, Tianhe District, Guangzhou, Guangdong Patentee before: GUANGZHOU YUEYAN INTELLIGENT EQUIPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20180310 |