CN107695268B - A kind of processing method of shoe tree positioning pin - Google Patents
A kind of processing method of shoe tree positioning pin Download PDFInfo
- Publication number
- CN107695268B CN107695268B CN201711082075.9A CN201711082075A CN107695268B CN 107695268 B CN107695268 B CN 107695268B CN 201711082075 A CN201711082075 A CN 201711082075A CN 107695268 B CN107695268 B CN 107695268B
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- blank
- cavity
- pillar
- upper mold
- lower die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of processing methods of shoe tree positioning pin, successively include following procedure of processing: 1, wire blank being cut into several segments rod piece blank；2, rod piece blank is placed in the first lower die, the first upper mold carries out jumping-up to one end of rod piece blank, forms the first blank；3, the first blank is placed in the second lower die, the second upper mold carries out punching press to one end of the first blank, forms the second blank；4, the second blank is placed in third lower die, third upper mold carries out punching stretch to one end of the second blank, forms third blank；5, third blank is placed in the 4th lower die, the 4th upper mold carries out punching stretch to one end of third blank, forms the 4th blank；6, the 4th blank is punched, forms the 5th blank with through-hole；7, to the polishing of the 5th blank outer surface, polishing.Using the above scheme, the present invention overcomes the shortcomings of the prior art, provides a kind of processing method of shoe tree positioning pin, high in machining efficiency, has saved cost.
Description
Technical field
The present invention relates to a kind of processing methods of shoe tree positioning pin.
Background technique
Shoe tree is the parent of shoes, is the molding die of shoes, is called and makees fillers.Shoe tree not only determines shoes moulding and style, more
It decides whether shoes fit, can play the role of that foot is protected to need to position shoe tree during shoes are molding.One
As in order to simply position shoe tree, it is easy to disassemble, shoe tree is positioned frequently with positioning pin.
This kind of positioning pin includes shank, and cylindrical cavity is offered in shank, and cavity extends to the tail end of shank, shank
Head offer through-hole, which is connected with cavity, and the lateral surface of shank tail end is equipped with annular nib, the lateral surface of shank
On convex ribs or convex block can be also set, convenient for shank installation when realize compress positioning.Conventional Milling Process causes material unrestrained
Take, low efficiency, in order to process this kind of positioning pin, needs a kind of saving material, high-efficient processing method.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of processing method of shoe tree positioning pin, processing efficiency
Height has saved cost.
To achieve the goals above, the technical solution adopted by the present invention is that: a kind of processing method of shoe tree positioning pin, successively
Including following procedure of processing:
(1), wire blank is cut into several segments rod piece blank；
(2), rod piece blank is placed in the first lower die, by cold headers drive the first upper mold to one end of rod piece blank into
Row jumping-up forms cylindrical first blank, and the first lower die includes the first cylindrical cavity, and the first upper mold has straight lower end
Face；
(3), the first blank is placed in the second lower die, by cold headers drive the second upper mold to one end of the first blank into
Row punching press forms second blank with annular nib and circular locating slot, and the diameter of circular locating slot is less than the second blank
Diameter, and be located at the medium position of the second blank, the second lower die includes cylindrical the second cavity and funnel shaped third chamber
Body, the second cavity are located at the lower section of third cavity, and the lower end surface of the first upper mold is equipped with the first pillar；
(4), the second blank is placed in third lower die, by cold headers drive third upper mold to one end of the second blank into
Row punching stretch, forms the third blank with the first cylindrical cavity, and third lower die includes cylindrical the 4th cavity and infundibulate
The 5th cavity, the 4th cavity is set to below the 5th cavity, and the lower end surface of third upper mold is equipped with the second pillar, the second pillar
Length is greater than the length of the first pillar, and the diameter of the second pillar is identical as the diameter of the first pillar；
(5), third blank is placed in the 4th lower die, by cold headers drive the 4th upper mold to one end of third blank into
Row punching stretch, forms the 4th blank with the second cylindrical cavity, and the length of the second cylindrical cavity is greater than the first cylindrical cavity, under the 4th
Mould includes cylindrical the 6th cavity and funnel shaped 7th cavity, and the 6th cavity is set to below the 7th cavity, the 6th cavity
Length direction on inner wall along the 6th cavity offers straight trough, passes through arc between the bottom surface of the 6th cavity and the side of the 6th cavity
Shape face transition connection, the lower end surface of the 4th upper mold are equipped with third pillar, and the length of third pillar is greater than the length of the second pillar,
The diameter of third pillar is identical as the diameter of the second pillar；
(6), the medium position of the 4th blank end face is punched, forms the 5th blank with through-hole；
(7), to the polishing of the 5th blank outer surface, polishing.
The present invention has the advantages that wire blank can be successively processed into several molding positioning pins by seven steps,
Be mainly step 2 to step 5 using cold-heading, blank to be processed need to be only placed in lower die, that is, can be used corresponding upper mold into
Row is processed and formed at one time, and gradually changes the shape of part, and without the operation such as cutting, stock utilization is high, has saved cost,
Rejection rate can be reduced, it is high in machining efficiency, burr is effectively removed, finished surface is more smooth, better quality.
The further setting of the present invention is: straight trough is set at several along the circumferencial direction interval of the 6th cavity in step (5)
It sets.
By using above scheme, several straight troughs are arranged along the circumferencial direction interval of the 6th cavity, outside the 4th blank
Straight trough position is corresponded on circumferential surface and forms convex ribs, which can be used for the positioning close-fitting installation of positioning pin, according to actual processing need
It wants, rotates corresponding straight trough number.
It is of the invention to be further arranged so that the second cavity, it is offered respectively on the bottom surface of the 4th cavity and the 6th cavity
Be provided with push rod convenient for the through slot of blanking operation, at through slot, the upper surface of push rod respectively with the second cavity or the 4th cavity or the
The bottom surface of six cavitys is concordant.
By using above scheme, the setting of through slot is convenient for blanking operation, push rod is arranged at through slot, which can
It is slid along through slot, in initial position, the upper surface of push rod is concordant with the bottom surface of each cavity, plays certain supporting role, completes
After blank processing, blank can be ejected, structure is simple.
The invention will be further described below in conjunction with the accompanying drawings.
Detailed description of the invention
Fig. 1 is the cross section structure schematic diagram of each blank in the embodiment of the present invention；
Fig. 2 is the first upper mold and the first lower die fit structure schematic diagram in the embodiment of the present invention；
Fig. 3 is the second upper mold and the second lower die fit structure schematic diagram in the embodiment of the present invention；
Fig. 4 is third upper mold and third lower die fit structure schematic diagram in the embodiment of the present invention；
Fig. 5 is the 4th upper mold and the 4th lower die fit structure schematic diagram in the embodiment of the present invention；
Fig. 6 is the positive structure schematic of positioning pin in the embodiment of the present invention.
Specific embodiment
As shown in figs 1 to 6, a kind of processing method of shoe tree positioning pin successively includes following procedure of processing: (1), by line
Material blank is cut into several segments rod piece blank 1；(2), rod piece blank 1 is placed in the first lower die 21, drives the by cold headers
One upper mold 31 carries out jumping-up to one end of rod piece blank 1, forms cylindrical first blank 4, and the first lower die 21 includes cylindrical
First cavity 211, the first upper mold 31 have straight lower end surface；(3), the first blank 4 is placed in the second lower die 22, passes through cold-heading
Machine drives the second upper mold 32 to carry out punching press to one end of the first blank 4, and being formed has annular nib 51 and circular locating slot 52
The second blank 5, the diameter of circular locating slot 52 and is located at the medium position of the second blank 5 less than the diameter of the second blank 5,
Second lower die 22 includes cylindrical the second cavity 221 and funnel shaped third cavity 222, and the second cavity 221 is located at third chamber
The lower end surface of the lower section of body 222, the second upper mold 32 is equipped with the first pillar 321；(4), the second blank 5 is placed in third lower die 23
In, drive third upper mold 33 to carry out punching stretch to one end of the second blank 5 by cold headers, being formed has the first cylindrical cavity 61
Third blank 6, third lower die 23 includes cylindrical the 4th cavity 231 and funnel shaped 5th cavity 232, the 4th cavity
231 are set to 232 lower section of the 5th cavity, and the lower end surface of third upper mold 33 is equipped with the second pillar 331, the length of the second pillar 331
Greater than the length of the first pillar 321, the diameter of the second pillar 331 is identical as the diameter of the first pillar 321；(5), by third blank
6 are placed in the 4th lower die 24, drive the 4th upper mold 34 to carry out punching stretch to one end of third blank 6 by cold headers, are formed
The length of the 4th blank 7 with the second cylindrical cavity 71, the second cylindrical cavity 71 is greater than the first cylindrical cavity 61, and the 4th lower die 24 includes
Cylindrical the 6th cavity 241 and funnel shaped 7th cavity 242, the 6th cavity 241 are set to below the 7th cavity 242, and the 6th
Length direction on the inner wall of cavity 241 along the 6th cavity 241 offers straight trough 2411, the bottom surface and the 6th of the 6th cavity 241
It being connected between the side of cavity 241 by 2412 transition of arcwall face, the lower end surface of the 4th upper mold 34 is equipped with third pillar 341,
The length of third pillar 341 is greater than the length of the second pillar 331, the diameter phase of the diameter of third pillar 341 and the second pillar 331
Together；(6), the medium position of 7 end face of the 4th blank is punched, forms the 5th blank 8 with through-hole 81；(7), to the 5th
The polishing of 8 outer surface of blank, polishing.
In the present embodiment, straight trough 2411 is arranged at several along the circumferencial direction interval of the 6th cavity in step (5),
Corresponding 2411 position of straight trough of 4th blank 7 forms convex ribs 72, which can also be by convex block, the structures generation such as double wedge
It replaces.
In the present embodiment, it is offered respectively on the bottom surface of the second cavity 221, the 4th cavity 231 and the 6th cavity 241 logical
Slot 91, is provided with push rod 92 at through slot 91, the upper surface of push rod 92 respectively with the second cavity 221 or the 4th cavity 231 or the 6th
The bottom surface of cavity 241 is concordant.
Above embodiments, only one kind of the present invention preferably specific embodiment, those skilled in the art are in skill of the present invention
The usual variations and alternatives carried out in art aspects are included in protection scope of the present invention.
Claims (3)
1. a kind of processing method of shoe tree positioning pin, it is characterised in that: successively include following procedure of processing:
(1), wire blank is cut into several segments rod piece blank；
(2), rod piece blank is placed in the first lower die, drives the first upper mold to carry out upsetting to one end of rod piece blank by cold headers
Slightly, cylindrical first blank is formed, the first lower die includes the first cylindrical cavity, and the first upper mold has straight lower end surface；
(3), the first blank is placed in the second lower die, drives the second upper mold to rush one end of the first blank by cold headers
Pressure, forms second blank with annular nib and circular locating slot, and the diameter of circular locating slot is straight less than the second blank
Diameter, and it is located at the medium position of the second blank, the second lower die includes the second cavity and funnel shaped third cavity of cylinder, the
Two cavitys are located at the lower section of third cavity, and the lower end surface of the second upper mold is equipped with the first pillar；
(4), the second blank is placed in third lower die, drives third upper mold to rush one end of the second blank by cold headers
Pressure stretches, and forms the third blank with the first cylindrical cavity, and third lower die includes cylindrical the 4th cavity and funnel shaped the
Five cavitys, the 4th cavity are set to below the 5th cavity, and the lower end surface of third upper mold is equipped with the second pillar, the length of the second pillar
Greater than the length of the first pillar, the diameter of the second pillar is identical as the diameter of the first pillar；
(5), third blank is placed in the 4th lower die, drives the 4th upper mold to rush one end of third blank by cold headers
Pressure stretches, and forms the 4th blank with the second cylindrical cavity, and the length of the second cylindrical cavity is greater than the first cylindrical cavity, the 4th lower die packet
Cylindrical the 6th cavity and funnel shaped 7th cavity are included, the 6th cavity is set to below the 7th cavity, the inner wall of the 6th cavity
On along the length direction of the 6th cavity offer straight trough, pass through arcwall face between the bottom surface of the 6th cavity and the side of the 6th cavity
Transition connection, the lower end surface of the 4th upper mold are equipped with third pillar, and the length of third pillar is greater than the length of the second pillar, third
The diameter of pillar is identical as the diameter of the second pillar；
(6), the medium position of the 4th blank end face is punched, forms the 5th blank with through-hole；
(7), to the polishing of the 5th blank outer surface, polishing.
2. a kind of processing method of shoe tree positioning pin according to claim 1, it is characterised in that: in step (5) straight trough at
Several are arranged along the circumferencial direction interval of the 6th cavity.
3. a kind of processing method of shoe tree positioning pin according to claim 1, it is characterised in that: the second cavity, the 4th chamber
Through slot is offered on the bottom surface of body and the 6th cavity respectively, is provided with push rod at through slot, the upper surface of push rod respectively with the second chamber
The bottom surface of body or the 4th cavity or the 6th cavity is concordant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082075.9A CN107695268B (en) | 2017-11-07 | 2017-11-07 | A kind of processing method of shoe tree positioning pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082075.9A CN107695268B (en) | 2017-11-07 | 2017-11-07 | A kind of processing method of shoe tree positioning pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107695268A CN107695268A (en) | 2018-02-16 |
| CN107695268B true CN107695268B (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711082075.9A Active CN107695268B (en) | 2017-11-07 | 2017-11-07 | A kind of processing method of shoe tree positioning pin |
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| Country | Link |
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| CN (1) | CN107695268B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889791A (en) * | 2018-08-21 | 2018-11-27 | 许晓鑫 | A kind of production technology of shoe heel steel pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63126632A (en) * | 1986-11-17 | 1988-05-30 | Yamaguchi Seisakusho:Kk | Manufacture of base pin for fluorescent lamp |
| JPS63203229A (en) * | 1987-02-19 | 1988-08-23 | Toko Kikai Kk | Manufacture of hollow pin |
| CN1476945A (en) * | 2002-08-21 | 2004-02-25 | 宏达科技股份有限公司 | Tension cap forming method |
| CN104759566A (en) * | 2015-04-01 | 2015-07-08 | 上海浦东新区东海标准件有限公司 | Production device and production method for one-time molded locating pin |
| CN105234321A (en) * | 2015-11-05 | 2016-01-13 | 安徽黄山中友链条制造有限公司 | Cold upsetting-extruding formation device for thin-wall hollow locating pin shafts |
-
2017
- 2017-11-07 CN CN201711082075.9A patent/CN107695268B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63126632A (en) * | 1986-11-17 | 1988-05-30 | Yamaguchi Seisakusho:Kk | Manufacture of base pin for fluorescent lamp |
| JPS63203229A (en) * | 1987-02-19 | 1988-08-23 | Toko Kikai Kk | Manufacture of hollow pin |
| CN1476945A (en) * | 2002-08-21 | 2004-02-25 | 宏达科技股份有限公司 | Tension cap forming method |
| CN104759566A (en) * | 2015-04-01 | 2015-07-08 | 上海浦东新区东海标准件有限公司 | Production device and production method for one-time molded locating pin |
| CN105234321A (en) * | 2015-11-05 | 2016-01-13 | 安徽黄山中友链条制造有限公司 | Cold upsetting-extruding formation device for thin-wall hollow locating pin shafts |
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| Publication number | Publication date |
|---|---|
| CN107695268A (en) | 2018-02-16 |
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