CN204509365U - A kind of leather elasticity perforating needle - Google Patents
A kind of leather elasticity perforating needle Download PDFInfo
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- CN204509365U CN204509365U CN201520184692.XU CN201520184692U CN204509365U CN 204509365 U CN204509365 U CN 204509365U CN 201520184692 U CN201520184692 U CN 201520184692U CN 204509365 U CN204509365 U CN 204509365U
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- Prior art keywords
- shank
- pin
- needle
- leather
- open holes
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Abstract
The utility model provides a kind of leather elasticity perforating needle.Solve the punching press of existing leather punching pin easily broken, and the problem such as kerf quality is low.This leather elasticity perforating needle comprises in shaft-like needle body, needle body has outer shank and interior shank, pin end bottom outer shank offers open holes, arrange compression spring in open holes, interior shank penetrates open holes, and the top of interior shank is against compression spring, pin end bottom interior shank exposes open holes, the pin end of interior shank has some needle points be evenly distributed, and the inner side of needle point is the cone limit tilted, and outside is straight flange; The pin end of outer shank has some pin cuttves be evenly distributed, the inner side of pin cutter is straight flange, and outside is the cone limit tilted, and several pin cuttves are that ring is arranged, needle point is between two adjacent needles cuttves.Pressure needed for the economical punching of this leather elasticity perforating needle one, improves aperture quality; Two significantly reduce the pressure that every markingoff pin bar bears, and the edge of a knife are worn and torn little, avoid the body of rod to fracture.
Description
Technical field
The utility model belongs to skin technical field of tools processed, relates to a kind of parts punched to leather, particularly a kind of leather elasticity perforating needle.
Background technology
The principle of mechanical type leather punching is exactly mechanical stamping, utilize radius of crankshaft to reach mechanical reciprocating circulation motion, the function forming punching press goes out various required poroid machine on the products such as cladding, cloth, paper, foam, thin metal, PVC sheet, all kinds of films.Wherein leather punching pin is parts indispensable in drilling operation, and the quality of leather punching pin and structure directly affect the work-ing life of punching quality and needle body self.
At present, leather punched hole generally has two kinds of red needles of punching, a kind of metal bar of to be head be taper, and there is the elongated hole of the full rod of break-through at the center of metal bar, the aperture of tapered tip is the edge of a knife, its weak point is: the length of punching pin elongated hole is longer, process comparatively time-consuming, effort, and the wide aperture elongated hole degree of depth is not easily drilled to identical, so that each edge of a knife of punching pin is not easily in same level, cause the leather hole had to be charged and attacked out, then failing of having is charged and attacked out, affects punching quality.Another is bearing steel tack punched hole punching needle, part solves the technical problem of taper punching red needle, but because bearing steel tack red needle needs the very large pressure that bears, not only add noise but also very high requirement is proposed to the intensity of the material of mould, difficulty is added to the manufacture of mould, cost is increased, wastes resource.
Existing leather punching pin is integrated rod structure, under stamping press effect high-strength for a long time, very easily fractures in drill process; The operation wearing and tearing remarkably influenced leather punching quality of shank in addition.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes one and shank is divided into the more piece body of rod, and connected by elasticity between the merogenesis body of rod, have the leather elasticity perforating needle of elasticity precompressed operation under punching press state.
The purpose of this utility model realizes by following technical proposal: a kind of leather elasticity perforating needle, comprise in shaft-like needle body, it is characterized in that, described needle body has outer shank and interior shank, pin end bottom described outer shank offers open holes, in described open holes, compression spring is set, described interior shank penetrates above-mentioned open holes, the top of described interior shank is against above-mentioned compression spring, pin end bottom described interior shank exposes above-mentioned open holes, the pin end of described interior shank have some needle points be evenly distributed, the inner side of described needle point is the cone limit tilted, outside is straight flange, the pin end of described outer shank has some pin cuttves be evenly distributed, the inner side of described pin cutter is straight flange, and outside is the cone limit tilted, and several pin cuttves are that ring is arranged, described needle point is between two adjacent needles cuttves.
The punch process of this leather elasticity perforating needle is: when leather punching presses down perforating needle, and first by the pin end in contact leather fabric of interior shank, needle point inserts in leather fabric gradually; Along with whole needle body presses down gradually, the needle point of interior shank slowly stops lower slotting action, the external shank of interior shank produces top power upwards thus, and then makes compression spring between the two be produced elastic pressure by compressing, and the internal shank of this elastic pressure and outer shank all play punching press shock absorption; Press contacts leather fabric under the pin end of final outer shank, the blade of each pin cutter cuts the leather fabric between two needle points, because some pin cuttves and needle point form the complete edge of a knife continuously, therefore preparing inserted through providing pre-cut for integral cutting in advance by needle point, the follow-up edge of a knife is cut more laborsaving, be also convenient to the kerf quality of fabric punching.
In above-mentioned leather elasticity perforating needle, described pin cutter is circular arc, and several pin cutter splits form circular knife edge.Circular knife edge correspondingly can stamp out circular hole, can according to the shape of the needs of hole shape corresponding adjustment pin cutter.
In above-mentioned leather elasticity perforating needle, described pin cutter linearly shape, several pin cutter splits form the Polygons edge of a knife.The Polygons edge of a knife correspondingly can stamp out polygonal hole, can according to the shape of the needs of hole shape corresponding adjustment pin cutter.
In above-mentioned leather elasticity perforating needle, the periphery wall at described interior shank top arranges slide block, described shoe contact open holes inwall is formed and is slidably connected, and the internal perisporium bottom described open holes arranges limited block, and in described limited block contact, shank outer wall is formed and is slidably connected.In the process that interior shank moves up and down in shank outside, the limited block on interior shank is along wall slip in open holes, and the friction both reducing thus makes displacement smooth and easy, moreover can also play guide effect, makes both central shafts consistent.When interior shank is displaced downwardly to extreme lower position, slide block is just resisted against on limited block and forms stop screens, detaches outer shank completely to prevent interior shank.
In above-mentioned leather elasticity perforating needle, the pin end of described interior shank has flat internal taper hole, and described needle point is arranged on the outer border of flat internal taper hole.Flat internal taper hole on pin end can improve perforating efficiency, and extends the work-ing life of needle body.
In above-mentioned leather elasticity perforating needle, the tapering on described needle point inboard cone limit is 5 ° to 8 °.
In above-mentioned leather elasticity perforating needle, the tapering of boring limit outside described pin cutter is 8 ° to 12 °.
In above-mentioned leather elasticity perforating needle, the top of described compression spring is connected and installed the roof in hole, and the bottom of described compression spring connects the top of interior shank.
In above-mentioned leather elasticity perforating needle, described needle point has steel point, and described pin cutter has steel sword.
Compared with prior art, this leather elasticity perforating needle is by being separated overall shank, and set up elastic buffer structure, leather punched hole is made to be divided into pre-interting and cutting two steps, thus by pressure needed for the economical punching of elastic pressure buffer one, reach light punching, also improve the aperture quality of leather fabric; Two realize the separate operations to needle body pressure, significantly reduce the pressure that every markingoff pin bar bears, and the edge of a knife is worn and torn little, keep the blade of sharp state, also effectively protect overall shank, avoiding fractureing extends work-ing life.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of this leather elasticity perforating needle.
Fig. 2 is the knife edge structure schematic diagram of this leather elasticity perforating needle embodiment one.
Fig. 3 is the knife edge structure schematic diagram of this leather elasticity perforating needle embodiment two.
In figure, 1, outer shank; 11, pin cutter; 2, interior shank; 21, needle point; 3, compression spring; 4, slide block; 5, limited block.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, this leather elasticity perforating needle comprises in shaft-like needle body, needle body has outer shank 1 and interior shank 2, pin end bottom outer shank 1 offers open holes, compression spring 3 is set in open holes, interior shank 2 penetrates open holes, and the top of interior shank 2 is against compression spring 3, and the pin end bottom interior shank 2 exposes open holes.
The top of compression spring 3 is connected and installed the roof in hole, and the bottom of compression spring 3 connects the top of interior shank 2.Needle point 21 has steel point, and pin cutter 11 has steel sword.
The pin end of interior shank 2 has some needle points 21 be evenly distributed, in the present embodiment, adopt four needle points 21.The inner side of needle point 21 is the cone limit tilted, and outside is straight flange, and the tapering on needle point 21 inboard cone limit is 5 ° to 8 °.
The pin end of outer shank 1 has some pin cuttves 11 be evenly distributed, in the present embodiment, adopt four pin cuttves 11.The inner side of pin cutter 11 is straight flange, and outside is the cone limit tilted, and the tapering of boring limit outside pin cutter 11 is 8 ° to 12 °.
Four pin cuttves 11 are arranged in ring, and needle point 21 is between two adjacent needles cuttves 11, forms the enclosed edge of a knife continuously by four pin cuttves 11 and four needle points 21.
Pin cutter 11 is in circular arc, and four pin cutter 11 splits form circular knife edge.Circular knife edge correspondingly can stamp out circular hole, can according to the shape of the needs of hole shape corresponding adjustment pin cutter 11.
The pin end of interior shank 2 has flat internal taper hole, and four needle points 21 are arranged on the outer border of flat internal taper hole.Flat internal taper hole on pin end can improve perforating efficiency, and extends the work-ing life of needle body.
The periphery wall at interior shank 2 top arranges slide block 4, and slide block 4 contacts the formation of open holes inwall and is slidably connected, and the internal perisporium bottom open holes is arranged limited block 5, and limited block 5 contacts the formation of interior shank 2 outer wall and is slidably connected.In the process that interior shank 2 moves up and down in shank 1 outside, the limited block 5 on interior shank 2 is along wall slip in open holes, and the friction both reducing thus makes displacement smooth and easy, moreover can also play guide effect, makes both central shafts consistent.When interior shank 2 is displaced downwardly to extreme lower position, slide block 4 is just resisted against on limited block 5 and forms stop screens, detaches outer shank 1 completely to prevent interior shank 2.
The punch process of this leather elasticity perforating needle is: when leather punching presses down perforating needle, and first by the pin end in contact leather fabric of interior shank 2, needle point 21 inserts in leather fabric gradually; Along with whole needle body presses down gradually, the needle point 21 of interior shank 2 slowly stops lower slotting action, the external shank 1 of interior shank 2 produces top power upwards thus, and then making compression spring 3 between the two be produced elastic pressure by compressing, the internal shank of this elastic pressure 2 and outer shank 1 all play punching press shock absorption; Press contacts leather fabric under the pin end of final outer shank 1, the blade of each pin cutter 11 cuts the leather fabric between two needle points 21, because some pin cuttves 11 form the complete edge of a knife continuously with needle point 21, therefore preparing inserted through providing pre-cut for integral cutting in advance by needle point 21, the follow-up edge of a knife is cut more laborsaving, be also convenient to the kerf quality of fabric punching.
Embodiment two
As shown in Figure 3, the present embodiment is substantially identical with the technical characteristic of embodiment one, and its difference technical characteristic is:
Pin cutter 11 linearly shape, four pin cutter 11 splits form the Polygons edge of a knife.The Polygons edge of a knife correspondingly can stamp out polygonal hole, can according to the shape of the needs of hole shape corresponding adjustment pin cutter 11.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ outer shank 1 herein; Pin cutter 11; Interior shank 2; Needle point 21; Spring 3; Slide block 4; Term such as limited block 5 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (8)
1. a leather elasticity perforating needle, comprise in shaft-like needle body, it is characterized in that, described needle body has outer shank and interior shank, pin end bottom described outer shank offers open holes, in described open holes, compression spring is set, described interior shank penetrates above-mentioned open holes, the top of described interior shank is against above-mentioned compression spring, pin end bottom described interior shank exposes above-mentioned open holes, the pin end of described interior shank has some needle points be evenly distributed, and the inner side of described needle point is the cone limit tilted, and outside is straight flange; The pin end of described outer shank has some pin cuttves be evenly distributed, the inner side of described pin cutter is straight flange, and outside is the cone limit tilted, and several pin cuttves are that ring is arranged, described needle point is between two adjacent needles cuttves.
2. leather elasticity perforating needle according to claim 1, is characterized in that, described pin cutter is circular arc, and several pin cutter splits form circular knife edge.
3. leather elasticity perforating needle according to claim 1, is characterized in that, described pin cutter linearly shape, and several pin cutter splits form the Polygons edge of a knife.
4. leather elasticity perforating needle according to claim 1, it is characterized in that, the periphery wall at described interior shank top arranges slide block, described shoe contact open holes inwall is formed and is slidably connected, internal perisporium bottom described open holes arranges limited block, and in described limited block contact, shank outer wall is formed and is slidably connected.
5. leather elasticity perforating needle according to claim 4, is characterized in that, the pin end of described interior shank has flat internal taper hole, and described needle point is arranged on the outer border of flat internal taper hole.
6. leather elasticity perforating needle according to claim 5, is characterized in that, the tapering on described needle point inboard cone limit is 5 ° to 8 °.
7. leather elasticity perforating needle according to claim 6, is characterized in that, the tapering of boring limit outside described pin cutter is 8 ° to 12 °.
8. leather elasticity perforating needle according to any one of claim 1 to 7, is characterized in that, the top of described compression spring is connected and installed the roof in hole, and the bottom of described compression spring connects the top of interior shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184692.XU CN204509365U (en) | 2015-03-30 | 2015-03-30 | A kind of leather elasticity perforating needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184692.XU CN204509365U (en) | 2015-03-30 | 2015-03-30 | A kind of leather elasticity perforating needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204509365U true CN204509365U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520184692.XU Expired - Fee Related CN204509365U (en) | 2015-03-30 | 2015-03-30 | A kind of leather elasticity perforating needle |
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| CN (1) | CN204509365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968448A (en) * | 2017-12-28 | 2019-07-05 | 江苏凯尔生物识别科技有限公司 | Puncher with guide post |
| CN113736926A (en) * | 2021-08-30 | 2021-12-03 | 温州大学 | Multifunctional leather production and processing equipment |
-
2015
- 2015-03-30 CN CN201520184692.XU patent/CN204509365U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109968448A (en) * | 2017-12-28 | 2019-07-05 | 江苏凯尔生物识别科技有限公司 | Puncher with guide post |
| CN113736926A (en) * | 2021-08-30 | 2021-12-03 | 温州大学 | Multifunctional leather production and processing equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |