CN103586360A - Clamp die for pipe end forming machine - Google Patents
Clamp die for pipe end forming machine Download PDFInfo
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- CN103586360A CN103586360A CN201210289019.3A CN201210289019A CN103586360A CN 103586360 A CN103586360 A CN 103586360A CN 201210289019 A CN201210289019 A CN 201210289019A CN 103586360 A CN103586360 A CN 103586360A
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Abstract
The invention provides a clamp die for a pipe end forming machine. The clamp die for the pipe end forming machine comprises an upper clamp die and a lower clamp die. When the upper clamp die and the lower clamp die are shut together, the cavity of the upper clamp die and the cavity of the lower clamp die are in butt joint to form a processing cavity for accommodating a workpiece to be processed; the upper clamp die is further provided with an upper dotting pin, which is arranged inside an upper mounting hole of the body of the upper clamp die and protruded from the bottom surface of the cavity of the upper clamp die; the lower clamp die is provided with a lower dotting pin, which is arranged inside a lower mounting hole of the body of the lower clamp die and protruded from the bottom surface of the cavity of the lower clamp die; the upper dotting pin and the lower dotting pin correspond to each other. The clamp die for the pipe end forming machine integrates the necking process and the dotting process together to achieve necking and dotting in one step, thereby reducing the production procedures, material turnover among the procedures and the workload for material transportation and meanwhile guaranteeing the uniformity of products.
Description
Technical field
The present invention relates to processing and manufacturing field, particularly relate to a kind of die of clamping dies for pipe end forming machine, the operation that this die of clamping dies can complete reducing simultaneously and get ready.
Background technology
Pipe end moulding refers to and utilizes forming machine to carry out such as enlarging, reducing, beat the processing and forming such as anchor point, locating ring, bell mouth expanding the end of pipeline fitting.Forming method is as follows: on forming machine, first with die of clamping dies, clamp the pipe end that needs processing, recycling flaring and necking mould to pipe end carry out enlarging, reducing, beat anchor point, the processing and forming such as locating ring, bell mouth expanding.
At present, the die of clamping dies of pipe end forming machine only plays clamping action in production application.When the copper pipe mouth of pipe needs reducing and gets ready, need a minute two procedures to complete, first need to be on pipe end forming machine equipment by the fixing copper pipe of die of clamping dies, then by reducing die, copper pipe is carried out to reducing processing; And then get processing ready on cylinder device for dotting.This mode of production adopts twice production process, needs material cycling and carrying, and easily produce the inconsistent problem of quality between operation, and production efficiency is low.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of die of clamping dies that can complete reducing simultaneously and get operation ready, it is simple in structure, easy to use.
Technical scheme of the present invention is as follows:
A kind of die of clamping dies for pipe end forming machine, comprise upper clamp formwork and lower clamp formwork, described upper clamp formwork comprises upper die body and upper clamp formwork die cavity, described lower clamp formwork comprises lower mold body and lower clamp formwork die cavity, described upper clamp formwork and described lower clamp formwork are arranged on pipe end forming machine, when described upper clamp formwork and described lower clamp formwork close up, described upper clamp formwork die cavity and the docking of described lower clamp formwork die cavity are formed for holding the processing cavity of to be processed, described upper clamp formwork is also provided with gets pin ready, gets the bottom surface that pin protrudes from described upper clamp formwork die cavity ready on described; Described lower clamp formwork is also provided with down gets pin ready, gets the bottom surface that pin protrudes from described lower clamp formwork die cavity ready under described; On described, get ready pin and under get that pin is corresponding to be arranged ready.
In an embodiment, described upper clamp formwork die cavity comprises clamping slot and upper reducing groove therein, and the diameter of described upper reducing groove is than the little 0 ~ 0.5mm of the diameter of described upper clamping slot;
Described lower clamp formwork die cavity comprises lower clamping slot and lower reducing groove, and the diameter of described lower reducing groove is than the little 0 ~ 0.5mm of the diameter of described lower clamping slot.
Therein in an embodiment, get pin ready on described and be arranged on described upper reducing groove, get pin ready under described to be arranged on described lower reducing groove.
Therein in an embodiment, described upper clamp formwork die cavity and described lower clamp formwork die cavity are respectively arranged with installing hole and lower installing hole, described upper installing hole is corresponding with described lower installing hole arrange and with vertical setting of axis of described processing cavity, get ready on described pin and described under get pin ready and be arranged on respectively described upper installing hole and described lower installing hole.
In an embodiment, on described upper die body, be also provided with and tighten screw hole therein, described in tighten screw hole and communicate with described upper installing hole;
In described lower mold body, be also provided with lower trip bolt hole, described lower trip bolt hole communicates with described lower installing hole;
On described, get pin ready and be fixed on described upper die body by tightening screw, get pin ready under described to be fixed in described lower mold body by lower trip bolt.
Therein in an embodiment, get pin ready on described and comprise body and plunger, described body is plane with tightening the face that screw matches; Under described, get ready pin with described on to get the structure of pin ready identical.
In an embodiment, be also provided with positioning guide column in described lower mold body therein, be correspondingly provided with positioning guide column hole on upper die body, described positioning guide column matches with described positioning guide column hole.
In an embodiment, described upper clamp formwork die cavity departs from the center of upper die body therein, and described positioning guide column hole is arranged on a wider side of the end face of described upper die body; Described lower clamp formwork die cavity departs from the center of lower mold body, and described positioning guide column is arranged on a wider side of the upper surface of described lower mold body.
Therein in an embodiment, in the both sides of the end face of the close mounting screw of described upper die body, be provided with safety groove, the both sides near the end face of lower mounting screw in described lower mold body are provided with lower safety groove.
The invention has the beneficial effects as follows:
Die of clamping dies of the present invention not only has the function of clamping, when clamping, can complete and get operation ready, has saved the problems such as carrying of getting ready in operation, has reduced production process; Die of clamping dies of the present invention is by reducing and get operation ready and unite two into one, and reducing, gets disposable completing ready, has reduced production process, has reduced the turnover of material between operation, has reduced the workload of material handling, can guarantee the uniformity of product simultaneously.
Accompanying drawing explanation
Below in conjunction with concrete drawings and the specific embodiments, the present invention is further elaborated.
Fig. 1 is the overall schematic of an embodiment of die of clamping dies of the present invention;
Fig. 2 is that the master of the die of clamping dies shown in Fig. 1 looks schematic diagram;
Fig. 3 is the schematic top plan view of the die of clamping dies shown in Fig. 2;
Fig. 4 is the schematic side view of the die of clamping dies shown in Fig. 2;
Fig. 5 is the overall schematic of an embodiment of the lower clamp formwork of the die of clamping dies shown in Fig. 1;
Fig. 6 is the generalized section of the lower clamp formwork shown in Fig. 5;
Fig. 7 is the schematic top plan view of the lower clamp formwork shown in Fig. 5;
Fig. 8 is the schematic side view of the lower clamp formwork shown in Fig. 5;
Fig. 9 is the overall schematic of an embodiment of the upper clamp formwork of the die of clamping dies shown in Fig. 1;
Figure 10 is the generalized section of the upper clamp formwork shown in Fig. 9;
Figure 11 is the schematic top plan view of the upper clamp formwork shown in Fig. 9;
Figure 12 is the schematic side view of the upper clamp formwork shown in Fig. 9;
Figure 13 is the A place enlarged drawing of the upper clamp formwork shown in Figure 10;
Figure 14 is the upper installing hole shown in Figure 13 and the schematic diagram that tightens screw hole.
Description of reference numerals: 1-lower clamp formwork, 11-lower mold body, 12-lower clamp formwork die cavity, mounting screw under 13-, under 14-, get pin ready, trip bolt under 17-, 18-positioning guide column, safety groove under 19-, clamping slot under 121-, reducing groove under 122-, 2-upper clamp formwork, 21-upper die body, 22-upper clamp formwork die cavity, the upper mounting screw of 23-, on 24-, get pin ready, the upper installing hole of 25-, 26-tightens screw hole, 27-tightens screw, 28-positioning guide column hole, the upper safety groove of 29-, the upper clamping slot of 221-, the upper reducing groove of 222-, 3-processing cavity, 241-body, 242-plunger.
The specific embodiment
Referring to Fig. 1 ~ Figure 14, a kind of die of clamping dies for pipe end forming machine, comprise upper clamp formwork 2 and lower clamp formwork 1, described upper clamp formwork 2 comprises upper die body 21 and upper clamp formwork die cavity 22, described lower clamp formwork 1 comprises lower mold body 11 and lower clamp formwork die cavity 12, and described upper clamp formwork 2 and described lower clamp formwork 1 are arranged on pipe end forming machine; In the present embodiment, described upper clamp formwork 2 is arranged on pipe end forming machine by upper mounting screw 23, described lower clamp formwork 1 is arranged on pipe end forming machine by lower mounting screw 13, when described upper clamp formwork 2 and described lower clamp formwork 1 close up, described upper clamp formwork die cavity 22 and 23 docking of described lower clamp formwork die cavity are formed for holding the processing cavity 3 of to be processed, described upper clamp formwork is also provided with gets pin 24 ready, gets the bottom surface that pin 24 protrudes from described upper clamp formwork die cavity 22 ready on described; Described lower clamp formwork 1 is also provided with down gets pin 14 ready, gets the bottom surface that pin 14 protrudes from described lower clamp formwork die cavity 12 ready under described; On described, get ready pin 24 and under get that pin 14 is corresponding to be arranged ready.
Die of clamping dies in the present embodiment comprises upper clamp formwork and lower clamp formwork, during use, to be processed is placed in lower clamp formwork die cavity, on die of clamping dies, be provided with and get pin ready simultaneously, that is to say to be provided with on upper clamp formwork and get pin ready, under arranging, get pin ready on lower clamp formwork, above get ready pin and under get pin acting in conjunction ready and can complete and get operation ready.And in the present embodiment, get ready pin and under to get pin ready be all demountable, when not needing to get ready, can dismantle, make like this die of clamping dies of the present invention there is compatibility.Pin is got in setting ready can be so that die of clamping dies of the present invention not only has the function of clamping, when clamping, can complete and get operation ready, the problems such as carrying of getting ready in operation have been saved, reduced production process, can also use in addition reducing die, flaring die and drift etc. to carry out the operation of reducing, enlarging simultaneously.
Preferably, as a kind of embodiment, referring to Fig. 7 and Figure 11, in order to make die of clamping dies can complete reducing operation, at described upper clamp formwork die cavity 22, comprise clamping slot 221 and upper reducing groove 222, the diameter of described upper reducing groove is than the little 0 ~ 0.5mm of the diameter of described upper clamping slot; Described lower clamp formwork die cavity 12 comprises lower clamping slot 121 and lower reducing groove 122, and the diameter of described lower reducing groove is than the little 0 ~ 0.5mm of the diameter of described lower clamping slot.Like this when degree of choke (after being former pipe end external diameter and reducing, the external diameter of pipe end is poor) is not more than 0.5mm, by the extruding of upper clamp formwork, do not need to use in addition reducing die and drift can complete reducing operation, make like this die of clamping dies of the present invention further there is the function of reducing operation, under the effect of the pressure that the present embodiment presses down at upper clamp formwork, can complete reducing operation, and upper clamp formwork also compress when pressing down get ready pin with under get ready to sell out into and get operation ready, by reducing with get operation ready and unite two into one, reducing, get disposable completing ready, reduced production process, reduced the turnover of material between operation, reduced the workload of material handling, can guarantee the uniformity of product simultaneously.
The position of getting pin ready can be according to actual processing request setting, preferably, as a kind of embodiment, on described, get pin 24 ready and be arranged on described upper reducing groove 222, under described, get pin 14 ready and be arranged on described lower reducing groove 122, the position of getting pin ready and be arranged on reducing groove can be completed to the operation that reducing is got ready so simultaneously.More excellent, will on described, get pin 24 ready and be arranged on the intersection of described upper clamping slot 221 and upper reducing groove 222, get the intersection that pin 14 is arranged on described lower clamping slot 121 and lower reducing groove 122 ready under described.In the present embodiment to get the intersection that pin is arranged on clamping slot and reducing groove ready be the needs for following process.
Preferably, as a kind of embodiment, referring to Figure 14, described upper clamp formwork die cavity 22 and described lower clamp formwork die cavity 12 are respectively arranged with installing hole 25 and lower installing hole, described upper installing hole 25 is corresponding with described lower installing hole arrange and with vertical setting of axis of described processing cavity 3, get ready on described pin 24 and described under get pin 14 ready and be arranged on respectively described upper installing hole 25 and described lower installing hole.Described upper installing hole 25 and corresponding setting of described lower installing hole are the central axes of described upper installing hole 25 and described lower installing hole; The axis of described upper installing hole and described processing cavity is vertical, be that the central axis 251 of described upper installing hole and the central axis 223 of described upper clamp formwork die cavity 22 are vertical, the central axis 251 of preferably going up installing hole intersects vertically with the central axis 223 of upper clamp formwork die cavity 22.On get pin ready and be arranged in installing hole, under get pin ready and be arranged in lower installing hole, above get ready pin and under get pin ready and be symmetrical arranged, the central axis of therefore upper installing hole and lower installing hole on should overlapping also, get ready pin and under get pin ready and be positioned in a plane; The central axis of the central axis of upper installing hole and described upper clamp formwork die cavity intersects vertically and that is to say that installing hole and upper clamp formwork die cavity intersect vertically, thus referring to Fig. 8 and Figure 12, upper installing hole is arranged on the minimum point of upper clamp formwork die cavity, lower installing hole is arranged on the minimum point of lower clamp formwork die cavity, can guarantee like this to get ready pin with under to get the application of force direction of pin ready consistent with the direction of the downforce of upper clamp formwork, avoid getting ready pin and under get pin ready and cannot complete and get ready because extruding force is not enough.
Preferably, as a kind of embodiment, for the ease of above get ready pin and under get the dismounting of pin ready, on described upper die body, be also provided with and tighten screw hole 26, the described screw hole 26 that tightens communicates with described upper installing hole 25, described in tighten the central axis of screw hole and the central axis of described upper installing hole is vertical; In described lower mold body, be also provided with lower trip bolt hole, described lower trip bolt hole communicates with described lower installing hole, and the central axis in described lower trip bolt hole is vertical with the central axis of described lower installing hole; On described, get pin 24 ready and be fixed on described upper die body by tightening screw 27, get pin 14 ready under described to be fixed in described lower mold body by lower trip bolt 17.
Preferably, as a kind of embodiment, get pin 24 ready on described and comprise body 241 and plunger 242, described body 241 is plane with tightening the face that screw 27 matches; Under described, get ready pin 14 with described on to get the structure of pin 24 ready identical.The plunger 242 of getting pin on described ready protrudes from the bottom surface of described upper clamp formwork die cavity 22, the plunger 242 of getting pin 24 on described ready contacts with the workpiece that need to get ready, same, under described, get pin 14 ready and also comprise body and plunger, the plunger of getting pin 14 under described ready protrudes from the bottom surface of described lower clamp formwork die cavity 12, and the plunger of getting pin 14 under described ready contacts with the workpiece that need to get ready; The present embodiment, described plunger 242 is conical; The body 241 of getting pin 24 on described ready matches with upper installing hole 25, on described, get the top of the plunger 241 of pin 24 ready and stretch out installing hole 25, the body of getting pin 14 under described ready coordinates with described lower installing hole, gets the top of the plunger of pin 14 under described ready and stretches out lower installing hole.In order to make to tighten screw, can better compress and get pin ready, the body 241 of getting pin 24 on described ready with tighten the face that screw 27 contacts and be set to plane.Same, under to get the face that the body of pin 14 contacts with lower trip bolt 17 ready be also plane.In the present embodiment, above get ready pin and under get pin ready body be preferably similar cylindrical or prismatic.
Preferably, as a kind of embodiment, for upper clamp formwork and lower clamp formwork are better coordinated, while preventing that upper clamp formwork from pressing down out of position, the present embodiment is also provided with positioning guide column 18 on a side upper surface of the lower clamp formwork die cavity 12 of described lower mold body 1, on the corresponding end-faces of upper die body 2, be provided with positioning guide column hole 28, described positioning guide column 18 matches with described positioning guide column hole 28.In order to make upper clamp formwork and lower clamp formwork, accurately locate, the present embodiment arranges positioning guide column and positioning guide column hole, when upper clamp formwork presses down, only need make accurate cooperation of positioning guide column hole and positioning guide column can guarantee operation accurately, upper clamp formwork can not depart from, and guarantees accuracy and the uniformity of operation.
Preferably, as a kind of embodiment, referring to Fig. 8, Figure 11 and Figure 12, described upper clamp formwork die cavity 22 departs from upper die body 21 center, and described positioning guide column hole 28 is arranged on a wider side of the end face of described upper die body 21; Described lower clamp formwork die cavity 12 departs from lower mold body 11 center, and described positioning guide column 18 is arranged on a wider side of the upper surface of described lower mold body 11.
Preferably, as a kind of embodiment, in the both sides of the end face of the close mounting screw 23 of described upper die body 21, be provided with safety groove 29, the both sides near the end face of lower mounting screw 13 in described lower mold body 11 are provided with lower safety groove 19.When die of clamping dies of the present invention is used for pipe orifice burr or the operation of many strokes, pipe end forming machine now has three drifts, upper and lower two drifts likely collide die of clamping dies, for fear of the generation that collides phenomenon, at the two ends, left and right of upper clamp formwork, a groove is set respectively, at the two ends, left and right of lower clamp formwork, is respectively arranged with groove, form the safety groove of die of clamping dies, to meet the maximum stroke of drift, to guarantee safety.
Finally, it should be noted that, in this patent document, the relational terms such as first, second grade is only for an entity or operation are separated with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have any relation or sequentially.And, in this patent document, term " comprises ", " comprising " or its any other variant, it is intended to contain but not exclusive inclusion, thereby make to comprise process, method, article or the equipment of a series of key elements, not only comprise these key elements, but also comprise and clearly not listing and other key elements that those skilled in the art can know, or be also included as the known requisite key element of these processes, method, article or equipment.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. the die of clamping dies for pipe end forming machine, comprise upper clamp formwork and lower clamp formwork, described upper clamp formwork comprises upper die body and upper clamp formwork die cavity, described lower clamp formwork comprises lower mold body and lower clamp formwork die cavity, described upper clamp formwork and described lower clamp formwork are arranged on respectively on pipe end forming machine, when described upper clamp formwork and described lower clamp formwork close up, described upper clamp formwork die cavity and the docking of described lower clamp formwork die cavity are formed for holding the processing cavity of to be processed, it is characterized in that:
Described upper clamp formwork die cavity is also provided with gets pin ready, gets the bottom surface that pin protrudes from described upper clamp formwork die cavity ready on described;
Described lower clamp formwork die cavity is also provided with down gets pin ready, gets the bottom surface that pin protrudes from described lower clamp formwork die cavity ready under described;
On described, get ready pin and under get that pin is corresponding to be arranged ready.
2. die of clamping dies according to claim 1, is characterized in that:
Described upper clamp formwork die cavity comprises clamping slot and upper reducing groove, and the diameter of described upper reducing groove is than the little 0 ~ 0.5mm of the diameter of described upper clamping slot;
Described lower clamp formwork die cavity comprises lower clamping slot and lower reducing groove, and the diameter of described lower reducing groove is than the little 0 ~ 0.5mm of the diameter of described lower clamping slot.
3. die of clamping dies according to claim 2, is characterized in that:
On described, get pin ready and be arranged on described upper reducing groove section, get pin ready under described to be arranged on described lower reducing groove section.
4. die of clamping dies according to claim 3, is characterized in that:
Described upper clamp formwork die cavity and described lower clamp formwork die cavity are respectively arranged with installing hole and lower installing hole, described upper installing hole is corresponding with described lower installing hole arrange and with vertical setting of axis of described processing cavity, get ready on described pin and described under get pin ready and be arranged on respectively described upper installing hole and described lower installing hole.
5. die of clamping dies according to claim 4, is characterized in that:
On described upper die body, be also provided with and tighten screw hole, described in tighten screw hole and communicate with described upper installing hole;
In described lower mold body, be also provided with lower trip bolt hole, described lower trip bolt hole communicates with described installing hole;
On described, get pin ready and be fixed on described upper die body by tightening screw, get pin ready under described to be fixed in described lower mold body by lower trip bolt.
6. die of clamping dies according to claim 5, is characterized in that:
On described, get pin ready and comprise body and plunger, described body is plane with tightening the face that screw matches; Under described, get ready pin with described on to get the structure of pin ready identical.
7. die of clamping dies according to claim 6, is characterized in that:
Described lower mold body is also provided with positioning guide column, is correspondingly provided with positioning guide column hole on upper die body, and described positioning guide column matches with described positioning guide column hole.
8. die of clamping dies according to claim 7, is characterized in that:
Described upper clamp formwork die cavity departs from the center of upper die body, and described positioning guide column hole is arranged on a wider side of the end face of described upper die body; Described lower clamp formwork die cavity departs from the center of lower mold body, and described positioning guide column is arranged on a wider side of the upper surface of described lower mold body.
9. according to the die of clamping dies described in claim 1 ~ 8 any one, it is characterized in that:
Both sides at the end face of the close mounting screw of described upper die body are provided with safety groove, and the both sides near the end face of lower mounting screw in described lower mold body are provided with lower safety groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289019.3A CN103586360B (en) | 2012-08-14 | 2012-08-14 | For the die of clamping dies of pipe end forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289019.3A CN103586360B (en) | 2012-08-14 | 2012-08-14 | For the die of clamping dies of pipe end forming machine |
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| Publication Number | Publication Date |
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| CN103586360A true CN103586360A (en) | 2014-02-19 |
| CN103586360B CN103586360B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210289019.3A Active CN103586360B (en) | 2012-08-14 | 2012-08-14 | For the die of clamping dies of pipe end forming machine |
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| JPH11114640A (en) * | 1997-10-08 | 1999-04-27 | Nkk Corp | Necking forming method and necking jig for tube end of oil well tube |
| CN2459111Y (en) * | 2000-08-23 | 2001-11-14 | 长春汽车材料研究所 | End hole shrinking mechanism for pipe material |
| CN2882841Y (en) * | 2006-03-29 | 2007-03-28 | 珠海格力电器股份有限公司 | Fast mould changable pipe end shaper |
| CN101284292A (en) * | 2007-04-13 | 2008-10-15 | 河南新科隆电器有限公司 | Hole expansion die |
| CN101862780A (en) * | 2010-06-24 | 2010-10-20 | 王俊强 | Mechanical pipe fitting end forming machine |
| CN201900175U (en) * | 2010-11-19 | 2011-07-20 | 无锡曙光模具有限公司 | Adjustable punch structure |
| CN202779493U (en) * | 2012-08-14 | 2013-03-13 | 珠海格力电器股份有限公司 | Clamping mould for pipe end forming machine |
-
2012
- 2012-08-14 CN CN201210289019.3A patent/CN103586360B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11114640A (en) * | 1997-10-08 | 1999-04-27 | Nkk Corp | Necking forming method and necking jig for tube end of oil well tube |
| CN2459111Y (en) * | 2000-08-23 | 2001-11-14 | 长春汽车材料研究所 | End hole shrinking mechanism for pipe material |
| CN2882841Y (en) * | 2006-03-29 | 2007-03-28 | 珠海格力电器股份有限公司 | Fast mould changable pipe end shaper |
| CN101284292A (en) * | 2007-04-13 | 2008-10-15 | 河南新科隆电器有限公司 | Hole expansion die |
| CN101862780A (en) * | 2010-06-24 | 2010-10-20 | 王俊强 | Mechanical pipe fitting end forming machine |
| CN201900175U (en) * | 2010-11-19 | 2011-07-20 | 无锡曙光模具有限公司 | Adjustable punch structure |
| CN202779493U (en) * | 2012-08-14 | 2013-03-13 | 珠海格力电器股份有限公司 | Clamping mould for pipe end forming machine |
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| Publication number | Publication date |
|---|---|
| CN103586360B (en) | 2016-02-03 |
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