CN108927488A - Transition carrier bar and carrier bar bending mould - Google Patents
Transition carrier bar and carrier bar bending mould Download PDFInfo
- Publication number
- CN108927488A CN108927488A CN201811034856.5A CN201811034856A CN108927488A CN 108927488 A CN108927488 A CN 108927488A CN 201811034856 A CN201811034856 A CN 201811034856A CN 108927488 A CN108927488 A CN 108927488A
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- China
- Prior art keywords
- connecting portion
- carrier bar
- transition
- die holder
- interconnecting piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007704 transition Effects 0.000 title claims abstract description 68
- 238000005452 bending Methods 0.000 title claims abstract description 36
- 239000011230 binding agent Substances 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21L—MAKING METAL CHAINS
- B21L9/00—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains
- B21L9/02—Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains of roller-chain or other plate-link type
- B21L9/04—Punching or bending the different parts of the chain links
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/02—Driving gear
- B66B23/024—Chains therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The present invention provides a kind of transition carrier bar and carrier bar bending moulds, are related to the technical field of step chain of automatic escalator cranked link, the transition carrier bar, including first connecting portion, second connecting portion, third interconnecting piece, First Transition section and the second changeover portion；The first connecting portion, the second connecting portion, the third interconnecting piece, the First Transition section and second changeover portion are sequentially connected with from left to right；The First Transition section makes the first connecting portion transit to the second connecting portion, and the excessive wire shaped between the first connecting portion and the second connecting portion is circular arc line；Second changeover portion makes the second connecting portion transit to the third interconnecting piece, excessive wire shaped between the second connecting portion and the third interconnecting piece is circular arc line, and it is too low and the technical issues of stress concentration easily occur to solve carrier bar intensity existing in the prior art.
Description
Technical field
The present invention relates to step chain of automatic escalator cranked link technical fields, more particularly, to a kind of transition carrier bar and chain
Plate bending mould.
Background technique
It is more and more using the occasion of escalator in local infrastructure with the continuous development of various regions economy, from
It is so also increasing to the demand of escalator.Due to the difference of use occasion, staircase manufacturing firm is when designing staircase
Parameter can also change.It is difficult in the design of whole chain number (or number of axle) as the step chain of escalator key fitment
Exempt to will appear odd states, just needs to be connected with cranked link at this time.
As the major part transition carrier bar on cranked link, there are mainly two types of forms for existing production: one is chain
The direct press shaping die of plate mold.The briquetting shape of mold is typically rectangular when press-bending, therefore rolls over after press shaping die in carrier bar
What curved transition position left is linear type impression.Such state may reduce the intensity of carrier bar and the main side of existing production
Formula；Another kind is that the mach method of carrier bar for being processed into overall thickness is reprocessed both ends to desired thickness.It is such
The part of state can also generate stress in transition position and concentrate, also not to carrier bar intensity if machine tool cutting edge is too sharp
Benefit, while cost of manufacture is larger, therefore the transition carrier bar production method of this form only mostly uses.
The information disclosed in the background technology section is intended only to deepen understanding of the general background technology to the present invention, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide transition carrier bar and carrier bar bending moulds, to alleviate chain existing in the prior art
Plate intensity is too low and the technical issues of stress concentration easily occurs.
In a first aspect, a kind of transition carrier bar provided by the invention, is used for step chain of automatic escalator cranked link, comprising:
First connecting portion, second connecting portion, third interconnecting piece, First Transition section and the second changeover portion；
From left to right the first connecting portion, the second connecting portion, the third interconnecting piece, the First Transition section and
Second changeover portion is sequentially connected with；
The First Transition section makes the first connecting portion transit to the second connecting portion, the first connecting portion with
Excessive wire shaped between the second connecting portion is circular arc line；
Second changeover portion makes the second connecting portion transit to the third interconnecting piece, the second connecting portion with
Excessive wire shaped between the third interconnecting piece is circular arc line.
Further, the First Transition section is formed with crescent shaped groove.
Further, second changeover portion is formed with crescent shaped groove.
Further, the bottom of the groove is arc transition.
Further, between the first connecting portion and the second connecting portion at an angle.
Further, between the second connecting portion and the third interconnecting piece at an angle.
Further, the height of the first connecting portion is lower than the height of the third interconnecting piece.
Second aspect, a kind of carrier bar bending mould provided by the invention utilize carrier bar bending mould production first aspect
Described in any item transition carrier bars, comprising: be fixed on the upper die holder in lathe, be fixed on the lower die holder in lathe, upper male mould, under
Punch-pin, binder block and ejection block；
The upper male mould is fixed on the inside of the upper die holder, and the lower punch is fixed on the inside of the lower die holder；
The binder block is installed in the upper die holder, and the ejection block is installed in the lower die holder；
The binder block and the upper male mould relative spacing are arranged, and the ejection block is set with the lower punch relative spacing
It sets；
The upper die holder is oppositely arranged up and down with the ejection block, and the lower die holder is set relatively up and down with the binder block
It sets.
Further, the carrier bar bending mould includes: the first positioning plate and the second positioning plate；
The top of the ejection block is arranged in first positioning plate, and second positioning plate is arranged in the lower die holder
On, and the space for accommodating the transition carrier bar is formed between first positioning plate and second positioning plate.
Further, the cross section of the upper male mould and lower punch is circle.
Using transition carrier bar provided by the invention and bending mould, at least have the advantages that
Transition carrier bar provided by the invention, comprising: first connecting portion, second connecting portion, third interconnecting piece, First Transition section
With the second changeover portion；The first connecting portion, the second connecting portion, the third interconnecting piece, first mistake from left to right
It crosses section and second changeover portion is sequentially connected with；The First Transition section makes the first connecting portion transit to second company
Socket part, the excessive wire shaped between the first connecting portion and the second connecting portion are circular arc line；Second changeover portion makes
It obtains the second connecting portion and transits to the third interconnecting piece, it is excessive between the second connecting portion and the third interconnecting piece
Wire shaped is circular arc line.
Transition carrier bar provided herein, the briquetting shape of mold is circle when press-bending, and briquetting end surrounding fall it is bigger
Round-corner transition, the transition wire of carrier bar bending transition position is arc-shaped after press-bending.The design of this shape, not only mould parts make
Facilitate advantage of lower cost, mold versatility is also relatively strong, and does not influence the intensity of carrier bar after bending.
A kind of carrier bar bending mould provided by the invention, it is described in any item using carrier bar bending mould production first aspect
Transition carrier bar, comprising: the upper die holder being fixed in lathe, the lower die holder, upper male mould, lower punch, the binder block that are fixed in lathe
And ejection block；Upper male mould is fixed on the inside of upper die holder, and lower punch is fixed on the inside of the lower die holder；Binder block is installed on
In die holder, ejection block is installed in lower die holder；Binder block and upper male mould relative spacing are arranged, ejection block and lower punch relative spacing
Setting；Upper die holder is oppositely arranged up and down with ejection block, and lower die holder is oppositely arranged up and down with binder block.
Upper male mould (circle) and lower punch (circle) are fixing pieces in mold, are separately fixed in upper and lower die holder, above and below
Die holder is separately fixed on lathe.Binder block and ejection block are flexible pieces, are also respectively installed in upper and lower die holder.
With lower punch same plane when ejection block is initial, positioning plate 1 and positioning plate 2 are separately mounted to ejection block and lower die holder
On.When work, carrier bar part is first put into two positioning plates, and when whole upper mold pushes, binder block first contacts part, due to elasticity
Effect binder block and lower punch compress and fix part.Continue to push with upper mold and upper male mould, ejection block is due to elasticity
Effect compresses carrier bar part with upper male mould and moves down, until being pressed onto the size of needs.When upper mold backhaul and after be detached from part, zero
The part process of bending terminates.
This die feature: since upper and lower punch-pin is circle, the processing is simple, while can also reduce material and be processed into
This.Separately due to the flexibility characteristics of binder and liftout, allow to process the carrier bar part of different height of bending, the versatility of mold
Also relatively strong.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the top view of transition link plate structure used in the prior art；
Fig. 2 is the side view of transition link plate structure used in the prior art；
Fig. 3 is the top view of transition link plate structure provided in an embodiment of the present invention；
Fig. 4 is the side view of transition link plate structure provided in an embodiment of the present invention；
Fig. 5 is the partial enlargement diagram of part A in Fig. 4 of transition link plate structure provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of carrier bar bending mould provided in an embodiment of the present invention.
Icon: 100- first connecting portion；200- second connecting portion；300- third interconnecting piece；400- First Transition section；
The second changeover portion of 500-；600- groove；700- upper die holder；800- lower die holder；900- upper male mould；1000- lower punch；
1100- binder block；1200- ejection block；The first positioning plate of 1300-；The second positioning plate of 1400-；1500- transition carrier bar.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the top view of transition link plate structure used in the prior art；
Fig. 2 is the side view of transition link plate structure used in the prior art；
Fig. 3 is the top view of transition link plate structure provided in an embodiment of the present invention；
Fig. 4 is the side view of transition link plate structure provided in an embodiment of the present invention；
Fig. 5 is the partial enlargement diagram of part A in Fig. 4 of transition link plate structure provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of carrier bar bending mould provided in an embodiment of the present invention.
Fig. 1-6 is please referred to, below in conjunction with attached drawing to transition carrier bar provided in an embodiment of the present invention and carrier bar bending mould
It elaborates.
It is more and more using the occasion of escalator in local infrastructure with the continuous development of various regions economy, from
It is so also increasing to the demand of escalator.Due to the difference of use occasion, staircase manufacturing firm is when designing staircase
Parameter can also change.It is difficult in the design of whole chain number (or number of axle) as the step chain of escalator key fitment
Exempt to will appear odd states, just needs to be connected with cranked link at this time.
In a first aspect, a kind of transition carrier bar that at least one embodiment of the invention provides, is used for step chain of automatic escalator
Cranked link, comprising: first connecting portion 100, second connecting portion 200, third interconnecting piece 300, First Transition section 400 and the second mistake
Cross section 500；
The first connecting portion 100, the second connecting portion 200, the third interconnecting piece 300, described from left to right
One changeover portion 400 and second changeover portion 500 are sequentially connected with；
The First Transition section 400 makes the first connecting portion 100 transit to the second connecting portion 200, and described
Excessive wire shaped between one interconnecting piece 100 and the second connecting portion 200 is circular arc line；
Second changeover portion 500 makes the second connecting portion 200 transit to the third interconnecting piece 300, and described
Excessive wire shaped between two interconnecting pieces 200 and the third interconnecting piece 300 is circular arc line.
It should be noted that transition carrier bar 1500 provided herein, the briquetting shape of mold is circle when press-bending, and briquetting
End surrounding falls bigger round-corner transition, and the transition wire of carrier bar bending transition position is arc-shaped after press-bending.The design of this shape,
Not only mould parts advantage of lower cost easy to make, mold versatility is also relatively strong, and does not influence the intensity of carrier bar after bending.
Specifically, First Transition section 400 is formed with crescent shaped groove 600.Second changeover portion 500 is formed with crescent
The groove 600 of shape.
Here the bottom of groove 600 is arc transition.
Also, between first connecting portion 100 and the second connecting portion 200 at an angle.
Between second connecting portion 200 and the third interconnecting piece 300 at an angle simultaneously.
And the height of first connecting portion 100 is lower than the height of the third interconnecting piece 300.
Second aspect, a kind of carrier bar bending mould provided by the invention are appointed using carrier bar bending mould production first aspect
Transition carrier bar 1500 described in one, comprising: the upper die holder 700 that is fixed in lathe, the lower die holder 800 being fixed in lathe,
Upper male mould 900, lower punch 1000, binder block 1100 and ejection block 1200；
The upper male mould 900 is fixed on the inside of the upper die holder 700, and the lower punch 1000 is fixed on the lower die holder
800 inside；
The binder block 1100 is installed in the upper die holder 700, and the ejection block 1200 is installed on the lower die holder 800
It is interior；
The binder block 1100 is arranged with 900 relative spacing of upper male mould, the ejection block 1200 and the lower punch
The setting of 1000 relative spacings；
The upper die holder 700 is oppositely arranged with about 1200 ejection block, the lower die holder 800 and the binder block
About 1100 are oppositely arranged.
It should be noted that upper male mould 900 (circle) and lower punch 1000 (circle) are fixing pieces in mold, fix respectively
In upper and lower die holder 800, upper and lower die holder 800 is separately fixed on lathe.Binder block 1100 and ejection block 1200 are flexible pieces,
It is also respectively installed in upper and lower die holder 800.
With 1000 same plane of lower punch when ejection block 1200 is initial, positioning plate 1 and positioning plate 2 are separately mounted to ejection block
1200 and lower die holder 800 on.When work, carrier bar part is first put into two positioning plates, the binder block 1100 when whole upper mold pushes
Part is first contacted, due to elastic reaction binder block 1100 and the compression of lower punch 1000 and fixes part.With upper mold with it is convex
Mould 900 continues to push, and ejection block 1200 moves down since elastic reaction compresses carrier bar part with upper male mould 900, until pressure
To the size of needs.When upper mold backhaul and after be detached from part, the part process of bending terminates.
This die feature: since upper and lower punch-pin 1000 is circle, the processing is simple, while can also reduce material and add
Work cost.Separately due to the flexibility characteristics of binder and liftout, allow to process the carrier bar part of different height of bending, mold leads to
It is also relatively strong with property.
In addition, carrier bar bending mould includes: the first positioning plate 1300 and the second positioning plate 1400；
The top of the ejection block 1200 is arranged in first positioning plate 1300, and the setting of the second positioning plate 1400 exists
On the lower die holder 800, and it is formed between first positioning plate 1300 and second positioning plate 1400 for accommodating
State the space of transition carrier bar 1500.
The cross section of upper male mould 900 and lower punch 1000 is circle.
Transition carrier bar and carrier bar bending mould of the invention are illustrated above, still, the present invention is not limited to upper
Specific embodiment is stated, without departing from the scope of the claims, various deformations or change can be carried out.The present invention
The various modifications and change being included within the scope of the claims.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of transition carrier bar, it to be used for step chain of automatic escalator cranked link characterized by comprising first connecting portion, the
Two interconnecting pieces, third interconnecting piece, First Transition section and the second changeover portion；
The first connecting portion, the second connecting portion, the third interconnecting piece, the First Transition section and described from left to right
Second changeover portion is sequentially connected with；
The First Transition section makes the first connecting portion transit to the second connecting portion, the first connecting portion with it is described
Excessive wire shaped between second connecting portion is circular arc line；
Second changeover portion makes the second connecting portion transit to the third interconnecting piece, the second connecting portion with it is described
Excessive wire shaped between third interconnecting piece is circular arc line.
2. transition carrier bar according to claim 1, which is characterized in that the First Transition section is formed with crescent shaped recessed
Slot.
3. transition carrier bar according to claim 1, which is characterized in that second changeover portion is formed with crescent shaped recessed
Slot.
4. according to the described in any item transition carrier bars of Claims 2 or 3, which is characterized in that the bottom of the groove is circular arc mistake
It crosses.
5. transition carrier bar according to claim 1, which is characterized in that the first connecting portion and the second connecting portion it
Between at an angle.
6. transition carrier bar according to claim 1, which is characterized in that the second connecting portion and the third interconnecting piece it
Between at an angle.
7. transition carrier bar according to claim 1, which is characterized in that the height of the first connecting portion is lower than the third
The height of interconnecting piece.
8. a kind of carrier bar bending mould, which is characterized in that using described in carrier bar bending mould production any one of claim 1-7
Transition carrier bar, comprising: the upper die holder being fixed in lathe, the lower die holder, upper male mould, lower punch, the binder that are fixed in lathe
Block and ejection block；
The upper male mould is fixed on the inside of the upper die holder, and the lower punch is fixed on the inside of the lower die holder；
The binder block is installed in the upper die holder, and the ejection block is installed in the lower die holder；
The binder block and the upper male mould relative spacing are arranged, and the ejection block and the lower punch relative spacing are arranged；
The upper die holder is oppositely arranged up and down with the ejection block, and the lower die holder is oppositely arranged up and down with the binder block.
9. carrier bar bending mould according to claim 8, which is characterized in that the carrier bar bending mould includes: first fixed
Position plate and the second positioning plate；
The top of the ejection block is arranged in first positioning plate, and second positioning plate is arranged on the lower die holder, and
The space for accommodating the transition carrier bar is formed between first positioning plate and second positioning plate.
10. carrier bar bending mould according to claim 8, which is characterized in that the cross section of the upper male mould and lower punch
It is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034856.5A CN108927488A (en) | 2018-09-05 | 2018-09-05 | Transition carrier bar and carrier bar bending mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811034856.5A CN108927488A (en) | 2018-09-05 | 2018-09-05 | Transition carrier bar and carrier bar bending mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108927488A true CN108927488A (en) | 2018-12-04 |
Family
ID=64443476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811034856.5A Pending CN108927488A (en) | 2018-09-05 | 2018-09-05 | Transition carrier bar and carrier bar bending mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108927488A (en) |
Citations (9)
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|---|---|---|---|---|
| EP0921057A2 (en) * | 1997-12-04 | 1999-06-09 | Topy Kogyo Kabushiki Kaisha | Track link with flange for an endless track and a method for producing the same |
| CN101357392A (en) * | 2008-07-18 | 2009-02-04 | 安徽黄山恒久链传动有限公司 | Link-plate continuous automatic molding device |
| CN201249240Y (en) * | 2008-09-11 | 2009-06-03 | 上海理工大学 | Precision bending die for Z-shaped part |
| KR20110087357A (en) * | 2010-01-26 | 2011-08-03 | 심묘섭 | Cable chain structure |
| CN102397943A (en) * | 2011-10-20 | 2012-04-04 | 无锡曙光模具有限公司 | Bend molding die for automotive seat headrest pipe fittings |
| CN104190786A (en) * | 2014-09-18 | 2014-12-10 | 苏州市天隆链条有限公司 | Escalator stair chain plate fine-punching hole die |
| CN104259377A (en) * | 2014-09-10 | 2015-01-07 | 杭州东华链条集团有限公司 | Chain, chain transition chain plate and automatic chain transition chain plate integration punch forming technology |
| CN204220780U (en) * | 2014-10-22 | 2015-03-25 | 宁波宏协离合器有限公司 | The once-forming diel of a kind of clutch case detaching hook |
| CN209255747U (en) * | 2018-09-05 | 2019-08-16 | 苏州环球科技股份有限公司 | Transition carrier bar and carrier bar bending mould |
-
2018
- 2018-09-05 CN CN201811034856.5A patent/CN108927488A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0921057A2 (en) * | 1997-12-04 | 1999-06-09 | Topy Kogyo Kabushiki Kaisha | Track link with flange for an endless track and a method for producing the same |
| CN101357392A (en) * | 2008-07-18 | 2009-02-04 | 安徽黄山恒久链传动有限公司 | Link-plate continuous automatic molding device |
| CN201249240Y (en) * | 2008-09-11 | 2009-06-03 | 上海理工大学 | Precision bending die for Z-shaped part |
| KR20110087357A (en) * | 2010-01-26 | 2011-08-03 | 심묘섭 | Cable chain structure |
| CN102397943A (en) * | 2011-10-20 | 2012-04-04 | 无锡曙光模具有限公司 | Bend molding die for automotive seat headrest pipe fittings |
| CN104259377A (en) * | 2014-09-10 | 2015-01-07 | 杭州东华链条集团有限公司 | Chain, chain transition chain plate and automatic chain transition chain plate integration punch forming technology |
| CN104190786A (en) * | 2014-09-18 | 2014-12-10 | 苏州市天隆链条有限公司 | Escalator stair chain plate fine-punching hole die |
| CN204220780U (en) * | 2014-10-22 | 2015-03-25 | 宁波宏协离合器有限公司 | The once-forming diel of a kind of clutch case detaching hook |
| CN209255747U (en) * | 2018-09-05 | 2019-08-16 | 苏州环球科技股份有限公司 | Transition carrier bar and carrier bar bending mould |
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