CN103586360B - For the die of clamping dies of pipe end forming machine - Google Patents
For the die of clamping dies of pipe end forming machine Download PDFInfo
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- CN103586360B CN103586360B CN201210289019.3A CN201210289019A CN103586360B CN 103586360 B CN103586360 B CN 103586360B CN 201210289019 A CN201210289019 A CN 201210289019A CN 103586360 B CN103586360 B CN 103586360B
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Abstract
The invention provides a kind of die of clamping dies for pipe end forming machine, comprise upper clamp formwork and lower clamp formwork, when described upper clamp formwork and described lower clamp formwork close up, upper clamp formwork die cavity and the docking of lower clamp formwork die cavity form the processing cavity for holding workpiece to be added, described upper clamp formwork also comprises gets pin ready, getting pin on described ready is arranged in the upper installing hole of the upper die body of described upper clamp formwork, gets the bottom surface that pin protrudes from described upper clamp formwork die cavity on described ready; Described lower clamp formwork gets pin ready under also comprising, and gets pin ready and be arranged in the lower installing hole of the lower mold body of described lower clamp formwork under described, gets the bottom surface that pin protrudes from described lower clamp formwork die cavity under described ready; Get ready on described pin and under get ready pin correspondence arrange.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, decreases production process, decreases the turnover of material between operation, reduce the workload of material handling, can ensure the uniformity of product simultaneously.
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
Shaping the referring to of pipe end utilizes forming machine that the end of pipeline fitting is carried out to such as enlarging, reducing, beaten the processing and forming such as anchor point, locating ring, bell mouth expanding.Forming method is as follows: on forming machine, first clamp with die of clamping dies the pipe end needing processing, the processing and forming such as recycling flaring and necking mould carries out enlarging, reducing to pipe end, beats anchor point, 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, a point two procedures need complete, first need to fix copper pipe by die of clamping dies on pipe end forming machine equipment, then by reducing die, reducing processing is carried out to copper pipe; And then carry out getting processing ready on cylinder device for dotting.This mode of production adopts twice production process, needs material cycling and carrying between operation, and easily produces the inconsistent problem of quality, 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, its structure is simple, 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 form the processing cavity for holding workpiece to be added, described upper clamp formwork is also provided with and gets pin ready, gets the bottom surface that pin protrudes from described upper clamp formwork die cavity on described ready; Described lower clamp formwork is also provided with down and gets pin ready, gets the bottom surface that pin protrudes from described lower clamp formwork die cavity under described ready; Get pin on described ready and described under get ready pin correspondence arrange;
Described upper clamp formwork die cavity comprises clamping slot and upper reducing groove, and the diameter of described upper reducing groove is less than 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 less than the diameter of described lower clamping slot.
Wherein in an embodiment, the diameter 0 ~ 0.5mm less of the diameter of described upper clamping slot of described upper reducing groove;
Diameter 0 ~ the 0.5mm less of the diameter of described lower clamping slot of described lower reducing groove.
Wherein in an embodiment, get pin on described ready and be arranged on described upper reducing groove section, get pin under described ready and be arranged on described lower reducing groove section.
Wherein 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 to be arranged and arranges with the axes normal of described processing cavity, get pin on described ready and described under get pin ready and be arranged on described upper installing hole and described lower installing hole respectively.
Wherein in an embodiment, fastening screw hole on described upper die body is also provided with, described fastening screw hole communicates with described upper installing hole;
Described lower mold body is also provided with lower fastening screw nail, and described lower fastening screw nail communicates with described lower installing hole;
Getting pin on described ready is fixed on described upper die body by upper trip bolt, gets pin ready and be fixed in described lower mold body by lower trip bolt under described.
Wherein in an embodiment, get pin ready and comprise body and plunger on described, the face that described body matches with described upper trip bolt is plane; Get ready under described pin with described on to get the structure of pin ready identical.
Wherein in an embodiment, described lower mold body is also provided with positioning guide column, described upper die body is correspondingly provided with positioning guide column hole, described positioning guide column matches with described positioning guide column hole.
Wherein in an embodiment, described upper clamp formwork die cavity departs from the center of described upper die body, and described positioning guide column hole is arranged on the wider side of the end face of described upper die body; Described lower clamp formwork die cavity departs from the center of described lower mold body, and described positioning guide column is arranged on the wider side of the upper surface of described lower mold body.
Wherein in an embodiment, described upper die body near on the both sides of end face of mounting screw be provided with safety groove, the both sides of the end face near 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, can complete and get operation ready, eliminate the problems such as the carrying got ready in operation, decrease production process while clamping; 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, decreases production process, decreases the turnover of material between operation, reduce the workload of material handling, can ensure 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 the schematic front view of the die of clamping dies shown in Fig. 1;
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;
The overall schematic of an embodiment of the lower clamp formwork that Fig. 5 is 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;
The overall schematic of an embodiment of the upper clamp formwork that Fig. 9 is 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;
The A place enlarged drawing that Figure 13 is the upper clamp formwork shown in Figure 10;
The schematic diagram that Figure 14 is the upper installing hole shown in Figure 13 and upper fastening screw hole.
Description of reference numerals: 1-lower clamp formwork, 11-lower mold body, 12-lower clamp formwork die cavity, mounting screw under 13-, pin is got ready under 14-, 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-, 24-gets pin ready, the upper installing hole of 25-, the upper fastening screw hole of 26-, the upper trip bolt of 27-, 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.
Detailed description of the invention
See 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 the docking of described lower clamp formwork die cavity 23 form the processing cavity 3 for holding workpiece to be added, 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 on described ready; 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 under described ready; Get ready on described pin 24 and under get pin 14 correspondence ready and arrange.
Die of clamping dies in the present embodiment comprises upper clamp formwork and lower clamp formwork, during use, workpiece to be added is placed in lower clamp formwork die cavity, be provided with on die of clamping dies simultaneously and get pin ready, that is pin is got ready on being provided with on upper clamp formwork, lower clamp formwork under arranging get pin ready, above get ready pin and under get pin acting in conjunction ready and can complete and get operation ready.And get ready in the present embodiment pin and under to get pin ready be all demountable, can dismantle when not needing to get ready, making die of clamping dies of the present invention have compatibility like this.Setting is got pin ready and die of clamping dies of the present invention can be made not only to have the function of clamping, can complete while clamping and get operation ready, eliminate the problems such as the carrying got ready in operation, decrease production process, reducing die, flaring die and drift etc. can also be used in addition to carry out the operation of reducing, enlarging simultaneously.
Preferably, as a kind of embodiment, see Fig. 7 and Figure 11, complete reducing operation to enable die of clamping dies, clamping slot 221 and upper reducing groove 222 is comprised, the diameter 0 ~ 0.5mm less of the diameter of described upper clamping slot of described upper reducing groove at described upper clamp formwork die cavity 22; Described lower clamp formwork die cavity 12 comprises lower clamping slot 121 and lower reducing groove 122, the diameter 0 ~ 0.5mm less of the diameter of described lower clamping slot of described lower reducing groove.Like this when the degree of choke difference of the external diameter of pipe end (namely after former pipe end external diameter and reducing) is not more than 0.5mm, do not needed by the extruding of upper clamp formwork to use reducing die and drift can complete reducing operation in addition, die of clamping dies of the present invention is made to have had the function of reducing operation further like this, reducing operation can be completed under the effect of the pressure that the present embodiment presses down at upper clamp formwork, and upper clamp formwork also compress while 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, decrease production process, decrease the turnover of material between operation, reduce the workload of material handling, the uniformity of product can be ensured simultaneously.
The position getting pin ready can be arranged according to actual processing request, preferably, as a kind of embodiment, get pin 24 on described ready and be arranged on described upper reducing groove 222, get pin 14 under described ready and be arranged on described lower reducing groove 122, the position getting pin ready and be arranged on reducing groove can be completed like this operation that reducing is got ready simultaneously.More excellent, on described, get the intersection that pin 24 is arranged on described upper clamping slot 221 and upper reducing groove 222 ready, under described, get the intersection that pin 14 is arranged on described lower clamping slot 121 and lower reducing groove 122 ready.The intersection that pin is arranged on clamping slot and reducing groove got ready in the present embodiment is needs in order to following process.
Preferably, as a kind of embodiment, see 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 to be arranged and arranges with the axes normal of described processing cavity 3, get pin 24 on described ready and described under get pin 14 ready and be arranged on described upper installing hole 25 and described lower installing hole respectively.The central axes of described upper installing hole 25 and the corresponding setting of described lower installing hole and described upper installing hole 25 and described lower installing hole; The axes normal of described upper installing hole and described processing cavity, namely the central axis 251 of described upper installing hole is vertical with the central axis 223 of described upper clamp formwork die cavity 22, and preferably the central axis 251 of upper 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 therefore go up installing hole and lower installing hole should overlap also namely on get ready pin with under get pin ready and be positioned in a plane; That is the central axis of upper installing hole is crossing with the central axis upright of described upper clamp formwork die cavity goes up installing hole and upper clamp formwork die cavity intersects vertically, thus see 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 ensure like this to get ready pin with under to get the 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 because extruding force is not enough and get ready.
Preferably, as a kind of embodiment, for the ease of above get ready pin and under get the dismounting of pin ready, fastening screw hole 26 on described upper die body is also provided with, described fastening screw hole 26 communicates with described upper installing hole 25, the central axis of described fastening screw hole and the central axis upright of described upper installing hole; Described lower mold body is also provided with lower fastening screw nail, and described lower fastening screw nail communicates with described lower installing hole, the central axis of described lower fastening screw nail and the central axis upright of described lower installing hole; Getting pin 24 on described ready is fixed on described upper die body by upper trip bolt 27, gets pin 14 ready and be fixed in described lower mold body by lower trip bolt 17 under described.
Preferably, as a kind of embodiment, get pin 24 ready and comprise body 241 and plunger 242 on described, the face that described body 241 matches with upper trip bolt 27 is plane; Get ready under described pin 14 with described on to get the structure of pin 24 ready identical.The plunger 242 getting pin on described ready protrudes from the bottom surface of described upper clamp formwork die cavity 22, the plunger 242 of pin 24 and the absorption surface needing to get ready is got ready on described, same, get pin 14 under described ready and also comprise body and plunger, the plunger getting pin 14 under described ready protrudes from the bottom surface of described lower clamp formwork die cavity 12, gets the plunger of pin 14 and the absorption surface needing to get ready under described ready; The present embodiment, described plunger 242 is conical; The body 241 getting pin 24 on described ready matches with upper installing hole 25, installing hole 25 is stretched out on the top getting the plunger 241 of pin 24 on described ready, the body getting pin 14 under described ready coordinates with described lower installing hole, and lower installing hole is stretched out on the top getting the plunger of pin 14 under described ready.Can better compress to make upper trip bolt and get pin ready, the face that the body 241 getting pin 24 ready on described contacts with upper trip bolt 27 is set to plane.Same, under get pin 14 ready the face that contacts with lower trip bolt 17 of body be also plane.In the present embodiment, above get ready pin and under get ready pin body be preferably similar cylindrical or prismatic.
Preferably, as a kind of embodiment, better coordinate to make upper clamp formwork and lower clamp formwork, when preventing upper clamp formwork from pressing down out of position, the present embodiment is also provided with positioning guide column 18 on the upper surface, side of the lower clamp formwork die cavity 12 of described lower mold body 1, the corresponding end-faces of upper die body 2 is provided with positioning guide column hole 28, and described positioning guide column 18 matches with described positioning guide column hole 28.Accurately locate to make upper clamp formwork and lower clamp formwork, the present embodiment arranges positioning guide column and positioning guide column hole, positioning guide column hole and positioning guide column accurate fit only need be made when upper clamp formwork presses down can to ensure to operate accurately, and upper clamp formwork can not depart from, and ensures accuracy and the uniformity of operation.
Preferably, as a kind of embodiment, see Fig. 8, Figure 11 and Figure 12, described upper clamp formwork die cavity 22 departs from the center of upper die body 21, and described positioning guide column hole 28 is arranged on the wider side of the end face of described upper die body 21; Described lower clamp formwork die cavity 12 departs from the center of lower mold body 11, and described positioning guide column 18 is arranged on the wider side of the upper surface of described lower mold body 11.
Preferably, as a kind of embodiment, described upper die body 21 near on the both sides of end face of mounting screw 23 be provided with safety groove 29, the both sides of the end face near 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, in order to avoid colliding the generation of phenomenon, a groove is set respectively at the two ends, left and right of upper clamp formwork, is respectively arranged with groove at the two ends, left and right of lower clamp formwork, form the safety groove of die of clamping dies, to meet the maximum stroke of drift, to ensure safety.
Finally, it should be noted that, in this patent document, such as the relational terms of first, second grade and so on is only for separating an entity or operation with another entity or operating space, and not necessarily requires or imply to there is any relation or sequentially between these entities or operation.And, in this patent document, term " comprises ", " comprising " or its any other variant, it is intended to contain and nonexcludability comprises, thus make to comprise the process of a series of key element, method, article or equipment, 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 also comprise for the known requisite key element of these processes, method, article or equipment.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not 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 pipe end forming machine respectively, 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 form the processing cavity for holding workpiece to be added, 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 on described ready;
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 under described ready;
Get pin on described ready and described under get ready pin correspondence arrange;
Described upper clamp formwork die cavity comprises clamping slot and upper reducing groove, and the diameter of described upper reducing groove is less than 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 less than the diameter of described lower clamping slot.
2. die of clamping dies according to claim 1, is characterized in that:
Diameter 0 ~ the 0.5mm less of the diameter of described upper clamping slot of described upper reducing groove;
Diameter 0 ~ the 0.5mm less of the diameter of described lower clamping slot of described lower reducing groove.
3. die of clamping dies according to claim 2, is characterized in that:
Get pin on described ready and be arranged on described upper reducing groove section, get pin under described ready and 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 to be arranged and arranges with the axes normal of described processing cavity, get pin on described ready and described under get pin ready and be arranged on described upper installing hole and described lower installing hole respectively.
5. die of clamping dies according to claim 4, is characterized in that:
Fastening screw hole on described upper die body is also provided with, described fastening screw hole communicates with described upper installing hole;
Described lower mold body is also provided with lower fastening screw nail, and described lower fastening screw nail communicates with described lower installing hole;
Getting pin on described ready is fixed on described upper die body by upper trip bolt, gets pin ready and be fixed in described lower mold body by lower trip bolt under described.
6. die of clamping dies according to claim 5, is characterized in that:
Get pin on described ready and comprise body and plunger, the face that described body matches with described upper trip bolt is plane; Get ready under described 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, and described upper die body is correspondingly provided with positioning guide column hole, 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 described upper die body, and described positioning guide column hole is arranged on the wider side of the end face of described upper die body; Described lower clamp formwork die cavity departs from the center of described lower mold body, and described positioning guide column is arranged on the wider side of the upper surface of described lower mold body.
9. the die of clamping dies according to claim 1 ~ 8 any one, is characterized in that:
Described upper die body near on the both sides of end face of mounting screw be provided with safety groove, the both sides of the end face near 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 CN103586360A (en) | 2014-02-19 |
| CN103586360B true 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 |
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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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| CN103586360A (en) | 2014-02-19 |
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