CN207823749U - Molding die for trigonodont self-tapping screw - Google Patents
Molding die for trigonodont self-tapping screw Download PDFInfo
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- CN207823749U CN207823749U CN201820257814.7U CN201820257814U CN207823749U CN 207823749 U CN207823749 U CN 207823749U CN 201820257814 U CN201820257814 U CN 201820257814U CN 207823749 U CN207823749 U CN 207823749U
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- cavity
- tail
- tapping screw
- annulus
- screw
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Abstract
The utility model provides a kind of molding die for trigonodont self-tapping screw, is related to making the technical field of the mold of screw, including die ontology；Annulus cavity, triangle pole cavity, transition cavity and tail cavity are disposed with inside die ontology；There is wall thickness and annulus cavity by die ontology, triangle pole cavity, transition cavity and tail cavity are in coaxial arrangement, so that annulus cavity, triangle pole cavity, transition cavity and tail cavity collective effect, when making trigonodont self-tapping screw by die ontology, so that the screw head for the trigonodont self-tapping screw produced, screw rod, the central point of spiral shell tail is on same straight line, ensure that screw attacks speed, screw head can not be made by alleviating trigonodont self-tapping screw existing in the prior art, screw rod, spiral shell tail produces on same straight line, generate same mental and physical efforts, cause above-mentioned screw can not normal use the technical issues of；It is more practical.
Description
Technical field
The utility model is related to make the technical field of the mold of screw, trigonodont drilling tail spiral shell is used for more particularly, to one kind
The molding die of nail.
Background technology
Trilobular thread screws is also trigonodont self-tapping lock screw, or is trigonodont Self-locking screw.Or trilobular thread screws.
It refers to that tapping screw tail portion is trigonodont, and pitch thread is triangle；It belongs to a special type for tapping screw,
Its screw thread is the regular screw threads with arc triangle section, and thread surface also has higher hardness, therefore in connection, screw can
The tapping internal thread in the bottom outlet of connected piece, to form connection.
In the prior art, there is bone drill in the tail portion of Self Drilling Screws, and the section of pitch thread is circle；Trilobular thread screws because
There is no drilling tail, so punching in advance is needed, but tooth spiral shell tail is triangle section, so locking effect can be more preferable；Self Drilling Screws because
There is drilling tail, need not punch in advance, but the section of tooth spiral shell tail is 360 degree round, locking effect is not so good as trilobular thread screws.
Have the advantages that the pitch thread of triangle section and the screw with drill bit afterbody can have both above two screw simultaneously.
But since drilling tail is irregular shape, during screw use, can not ensure screw head, screw rod, spiral shell tail central point same
On straight line, same mental and physical efforts are generated, i.e., can not ensure screw attacks speed, causes above-mentioned screw also can not normal use.
Utility model content
The purpose of this utility model is to provide a kind of molding dies for trigonodont self-tapping screw, to alleviate existing skill
Trigonodont self-tapping screw present in art can not make screw head, screw rod, spiral shell tail central point on same straight line, generate concentric
Power, cause above-mentioned screw can not normal use the technical issues of.
A kind of molding die for trigonodont self-tapping screw provided by the utility model, including：Die ontology；
Annulus cavity, triangle pole cavity, transition cavity and tail cavity are disposed with inside die ontology；Annulus cavity
The end face of one end and die ontology far from triangle pole cavity is set in parallel, tail cavity one end and mould far from transition cavity
The other end of tool ontology is set in parallel；
Annulus cavity, triangle pole cavity, transition cavity and tail cavity are in coaxial arrangement, so that annulus cavity, triangle pole
Cavity, transition cavity and tail cavity collective effect, to form trigonodont self-tapping screw.
Further, the shape of annulus cavity and tail cavity is cylindric；
The shape of triangle pole cavity is triangular prism；
The shape of transition cavity is round platform.
Further, the diameter of columned annulus cavity and the external diameter of a circle phase of the triangle pole cavity of triangular prism shape
Deng.
Further, diameter of the round table-like transition cavity close to triangle pole cavity one end is more than close to tail cavity one end
Diameter.
Further, diameter phase of the transition cavity close to the diameter and columned annulus cavity of triangle pole cavity one end
Deng；
Diameter of the transition cavity close to tail cavity one end is equal with the diameter of columned tail cavity.
Further, three sides of the triangle pole cavity of triangular prism shape are in outer circle arc, and three sides connect successively
It connects.
Further, the equal length of three sides.
Further, the molding die provided by the utility model for trigonodont self-tapping screw further includes locking fluted disc；
Locking fluted disc is set to die ontology one end parallel with the annulus cavity, and locking fluted disc is used for triangle dental drill
The end of tail screw suppresses lock tooth.
Further, locking fluted disc is internally provided with multiple helical teeth, and multiple helical teeth are along locking fluted disc internal circumference direction
It is uniformly arranged, the end of trigonodont self-tapping screw is suppressed lock tooth by multiple helical teeth.
A kind of molding die for trigonodont self-tapping screw provided by the utility model, including：Die ontology；Mold sheet
Internal portion is disposed with annulus cavity, triangle pole cavity, transition cavity and tail cavity；Annulus cavity is far from triangle pole cavity
One end and the end face of die ontology be set in parallel, the other end of tail cavity one end and die ontology far from transition cavity
Face is set in parallel；Annulus cavity, triangle pole cavity, transition cavity and tail cavity are in coaxial arrangement, so that annulus cavity, three
Angular pole cavity, transition cavity and tail cavity collective effect, to form trigonodont self-tapping screw；There is wall thickness by die ontology
And annulus cavity, triangle pole cavity, transition cavity and tail cavity be in coaxial arrangement, when making trigonodont by die ontology
When self-tapping screw so that the screw head of the trigonodont self-tapping screw produced, screw rod, spiral shell tail central point in same straight line
On, ensure that screw attacks speed, and screw head, screw rod, spiral shell tail can not be made by alleviating trigonodont self-tapping screw existing in the prior art
Production on same straight line, generate same mental and physical efforts, cause above-mentioned screw can not normal use the technical issues of；It is more practical.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is that the molding die cross-section structure for trigonodont self-tapping screw that the utility model embodiment provides is illustrated
Figure；
Fig. 2 is the knot under the first visual angle of molding die for trigonodont self-tapping screw that the utility model embodiment provides
Structure schematic diagram；
Fig. 3, which is the molding die for trigonodont self-tapping screw that the utility model embodiment provides, has locking fluted disc
Structural schematic diagram；
Fig. 4 is the knot under the second visual angle of molding die for trigonodont self-tapping screw that the utility model embodiment provides
Structure schematic diagram.
Icon：100- die ontologies；200- annulus cavities；300- triangle pole cavities；400- transition cavities；The tail portions 500- type
Chamber；600- locks fluted disc；601- helical teeth.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", " left side ",
" right side ", "vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, such as there is term " first ", " second ", " third " are used for description purposes only, be not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, such as there is term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Fig. 1 is the molding die cross-sectional view provided in this embodiment for trigonodont self-tapping screw；Wherein, mould
It is disposed with annulus cavity 200, triangle pole cavity 300, transition cavity 400 and tail cavity 500 inside tool ontology 100.
Fig. 2 is the structural representation under molding die the first visual angle provided in this embodiment for trigonodont self-tapping screw
Figure；Wherein, the first visual angle is the direction faced along annulus cavity 200.
Fig. 3 is the structural representation that the molding die provided in this embodiment for trigonodont self-tapping screw has locking fluted disc
Figure；Wherein, the 600 multiple helical teeth 601 in inside of locking fluted disc, multiple helical teeth 601 are uniform along 600 internal circumference direction of locking fluted disc
Setting.
Fig. 4 is the structural representation under molding die the second visual angle provided in this embodiment for trigonodont self-tapping screw
Figure；Wherein, the second visual angle is the direction faced along tail cavity 500.
As shown in Figs 1-4, a kind of molding die for trigonodont self-tapping screw provided in this embodiment, including：Mold
Ontology 100；Annulus cavity 200, triangle pole cavity 300, transition cavity 400 and tail portion are disposed with inside die ontology 100
Cavity 500；The one end of annulus cavity 200 far from triangle pole cavity 300 and the end face of die ontology 100 are set in parallel, tail portion
The one end of cavity 500 far from transition cavity 400 and the other end of die ontology 100 are set in parallel；Annulus cavity 200, three
Angular pole cavity 300, transition cavity 400 and tail cavity 500 in coaxial arrangement so that annulus cavity 200, triangle pole cavity 300,
500 collective effect of transition cavity 400 and tail cavity, to form trigonodont self-tapping screw.
Wherein, die ontology 100 is set as hollow structure, and die ontology 100 is provided with wall thickness.
The length range of annulus cavity 200 is：1.3-1.8mm, it is preferable that the length of annulus cavity 200 is 1.5mm.
The length range of triangle pole cavity 300 is：12.5-13.5mm, it is preferable that the length of triangle pole cavity 300 is
12.9mm。
Transition cavity 400 and the total length of tail cavity 500 are ranging from：8.5-9.5mm, it is preferable that 400 He of transition cavity
The total length of tail cavity 500 is 9.0mm.
The detailed process of screw production technology：Segment (iron bar is cut into length appropriate), take the lead and (get screw head),
It is molded (making screw rod), folder tail (tentatively doing drilling tail), thread rolling and drilling tail molding.
The present embodiment for molding (making screw rod) detailed process be：After iron wire cut-out is taken the lead, the use of screw terminal connection
It is sequentially placed into above-mentioned annulus cavity 200, triangle pole cavity 300, transition cavity 400 and tail cavity in the iron wire for doing screw rod spiral shell tail
In 500, that is, screw terminal is got and has been sequentially connected annulus, triangle cylindricality screw rod, the semi-finished product screw of cylindrical spiral shell tail；Due to annulus
Cavity 200, triangle pole cavity 300, transition cavity 400 and tail cavity 500 are in coaxial arrangement, so can make annulus, three
Corner post shape screw rod, cylindrical spiral shell tail central point be on straight line, i.e., screw head, screw rod, spiral shell tail are concentric, ensure that product is attacked
Speed.
In addition, during pressing from both sides tail, need to clamp the screw terminal lower part of semi-finished product screw on drilling tail machine with fixture
Folder tail is carried out, because there is annulus, fixture can directly clamp annulus, because annulus all angles are all, need not adjust
Position improves folder tail efficiency., whereas if the not no annulus, then need triangle cylindricality screw rod being inserted into fixture, need first
By triangle cylindricality screw rod and grip alignment, folder tail could be carried out, efficiency substantially reduces；In addition, by by triangle cylindricality screw rod
When being inserted into fixture, it can not ensure that folder tail is concentric, to influence the quality of product.
A kind of molding die for trigonodont self-tapping screw provided in this embodiment, including：Die ontology 100；Mold
Annulus cavity 200, triangle pole cavity 300, transition cavity 400 and tail cavity 500 are disposed with inside ontology 100；Annulus
The one end of cavity 200 far from triangle pole cavity 300 and the end face of die ontology 100 are set in parallel, and tail cavity 500 is far from mistake
The one end and the other end of die ontology 100 for crossing cavity 400 are set in parallel；Annulus cavity 200, triangle pole cavity 300, mistake
Cavity 400 and tail cavity 500 are crossed in coaxial arrangement, so that annulus cavity 200, triangle pole cavity 300,400 and of transition cavity
500 collective effect of tail cavity, to form trigonodont self-tapping screw；There is wall thickness and annulus cavity by die ontology 100
200, triangle pole cavity 300, transition cavity 400 and tail cavity 500 make three in being coaxially disposed when passing through die ontology 100
When the tooth self-tapping screw of angle so that the screw head of the trigonodont self-tapping screw produced, screw rod, spiral shell tail central point in same
On straight line, ensure that screw attacks speed, alleviate trigonodont self-tapping screw existing in the prior art can not make screw head, screw rod,
Spiral shell tail produce on same straight line, generate same mental and physical efforts, cause above-mentioned screw can not normal use the technical issues of；It is more practical.
On the basis of the above embodiments, further, the molding provided in this embodiment for trigonodont self-tapping screw
The annulus cavity 200 of mold and the shape of tail cavity 500 are cylindric；The shape of triangle pole cavity 300 is triangular prism；It crosses
The shape for crossing cavity 400 is round platform.
Wherein, annulus cavity 200 is used to be made the annulus of trigonodont self-tapping screw, and triangle pole cavity 300 is for being made three
The triangle cylindricality screw rod of angle tooth self-tapping screw, transition cavity 400 and tail cavity 500 are used to be made the tail of trigonodont self-tapping screw
Portion's cylinder.
Since the cross sectional shape of annulus cavity 200 is circle, during pressing from both sides tail, need to clamp semi-finished product screw with fixture
Screw terminal lower part folder tail is carried out on drilling tail machine because there is annulus, fixture can directly clamp annulus, because of annulus
All angles all, need not adjust position, improve folder tail efficiency., whereas if the not no annulus, then need triangle
Cylindricality screw rod is inserted into fixture, it is necessary first to by triangle cylindricality screw rod and grip alignment, could carry out folder tail, efficiency drops significantly
It is low.
As shown in Figs. 1-2, further, the triangle pole cavity of the diameter of columned annulus cavity 200 and triangular prism shape
300 external diameter of a circles are equal.
Further, diameter of the round table-like transition cavity 400 close to 300 one end of triangle pole cavity, which is more than, leans on caudad type
The diameter of 500 one end of chamber.
Further, diameter and columned annulus cavity 200 of the transition cavity 400 close to 300 one end of triangle pole cavity
Diameter it is equal；Transition cavity 400 is close to the diameter of 500 one end of tail cavity and the diameter phase of columned tail cavity 500
Deng.
Wherein, since the shape of transition cavity 400 is round platform, and transition cavity 400 is with the big one side and three of diameter
The external diameter of a circle of angular pole cavity 300 is equal, and transition cavity 400 has the diameter of the small one side and tail cavity 500 of diameter
It is equal, so that the diameter of tail cavity 500 is less than the diameter of annulus cavity 200, so as in tail cavity 500
It is formed to the direction of annulus cavity 200 stair-stepping incremental, ensure that the intensity of trigonodont self-tapping screw.
Cylinder made of tail cavity 500 can be formed by subsequent processing convenient for drilling and improving trigonodont drilling tail
Screw attacks the drill bit of speed.
Since the diameter of annulus is identical as the external diameter of a circle of triangle cylindricality screw rod so that the central point of the two is at one
On straight line, it is ensured that for spiral shell tail also on same straight line, i.e., screw head, screw rod, spiral shell tail are concentric, ensure that product attacks speed.
Further, three sides of the triangle pole cavity 300 of triangular prism shape are in outer circle arc, and three sides are successively
Connection.
Further, the equal length of three sides.
Since three sides of triangle pole cavity 300 are in outer circle arc so that three of the triangle cylindricality screw rod of making
Side is in outer circle arc, to ensure that locking effect can be more preferable by three sides of outer circle arc.
Annulus is made by annulus cavity 200 in molding die provided in this embodiment for trigonodont self-tapping screw, side
Drilling tail machine directly clamp annulus, improve folder tail efficiency；Pass through the circumscribed circle of the diameter and triangle cylindricality screw rod of annulus
Diameter is identical, while passing through the tail portion of transition round platform connecting cylinder shape so that screw head, screw rod, spiral shell tail are concentric, ensure that product is attacked
Speed；Three sides finally by triangle pole cavity 300 are in outer circle arc so that three sides of the triangle cylindricality screw rod of making
Side is in outer circle arc, ensure that locking effect can be more preferable so that whole design is more complete, more practical.
On the basis of the above embodiments, further, the molding provided in this embodiment for trigonodont self-tapping screw
Mold further includes locking fluted disc 600；Locking fluted disc 600 is set to one parallel with the annulus cavity 200 of die ontology 100
End, locking fluted disc 600 are used to the end of trigonodont self-tapping screw suppressing lock tooth.
Wherein, locking fluted disc 600 is locked by being provided with screw thread close to the upper surface of annulus cavity 200 in die ontology 100
Tight fluted disc 600 in screw head inner surface after taking the lead in trigonodont drilling tail production process for doing lock tooth.
Further, locking fluted disc 600 is internally provided with multiple helical teeth 601, and multiple helical teeth 601 are along locking fluted disc 600
Internal circumference direction is uniformly arranged, the end of trigonodont self-tapping screw is suppressed lock tooth by multiple helical teeth 601.
Molding die provided in this embodiment for trigonodont self-tapping screw is disposed in proximity to by locking fluted disc 600
The upper surface of annulus cavity 200, by locking the multiple helical teeth 601 in the inside of fluted disc 600, with by multiple helical teeth 601 by trigonodont
The end of self-tapping screw suppresses lock tooth so that the making of trigonodont self-tapping screw is more perfect, and design is more reasonable, more in fact
With.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (9)
1. a kind of molding die for trigonodont self-tapping screw, which is characterized in that including：Die ontology；
Annulus cavity, triangle pole cavity, transition cavity and tail cavity are disposed with inside the die ontology；The annulus
Cavity one end and the end face of the die ontology far from the triangle pole cavity are set in parallel, and the tail cavity is far from institute
The one end and the other end of the die ontology for stating transition cavity are set in parallel；
The annulus cavity, the triangle pole cavity, the transition cavity and the tail cavity are in coaxial arrangement, so that described
Annulus cavity, the triangle pole cavity, the transition cavity and the tail cavity collective effect, to form trigonodont drilling tail spiral shell
Nail.
2. the molding die according to claim 1 for trigonodont self-tapping screw, which is characterized in that the annulus cavity
Shape with the tail cavity is cylindric；
The shape of the triangle pole cavity is triangular prism；
The shape of the transition cavity is round platform.
3. the molding die according to claim 2 for trigonodont self-tapping screw, which is characterized in that columned described
The diameter of annulus cavity is equal with the external diameter of a circle of triangle pole cavity of triangular prism shape.
4. the molding die according to claim 3 for trigonodont self-tapping screw, which is characterized in that round table-like is described
Diameter of the transition cavity close to triangle pole cavity one end is more than the diameter close to described tail cavity one end.
5. the molding die according to claim 4 for trigonodont self-tapping screw, which is characterized in that the transition cavity
Diameter close to triangle pole cavity one end is equal with the columned diameter of annulus cavity；
Diameter of the transition cavity close to described tail cavity one end is equal with the columned diameter of the tail cavity.
6. the molding die according to claim 2 for trigonodont self-tapping screw, which is characterized in that the institute of triangular prism shape
State three sides of triangle pole cavity and be in outer circle arc, and three sides are sequentially connected.
7. the molding die according to claim 6 for trigonodont self-tapping screw, which is characterized in that three sides
Equal length.
8. being used for the molding die of trigonodont self-tapping screw according to claim 1-7 any one of them, which is characterized in that also wrap
Include locking fluted disc；
The locking fluted disc is set to die ontology one end parallel with the annulus cavity, and the locking fluted disc is used for will
The end of trigonodont self-tapping screw suppresses lock tooth.
9. the molding die according to claim 8 for trigonodont self-tapping screw, which is characterized in that the locking fluted disc
Multiple helical teeth are internally provided with, multiple helical teeth are uniformly arranged along locking fluted disc internal circumference direction, more to pass through
The end of trigonodont self-tapping screw is suppressed lock tooth by a helical teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257814.7U CN207823749U (en) | 2018-02-09 | 2018-02-09 | Molding die for trigonodont self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257814.7U CN207823749U (en) | 2018-02-09 | 2018-02-09 | Molding die for trigonodont self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207823749U true CN207823749U (en) | 2018-09-07 |
Family
ID=63398289
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820257814.7U Expired - Fee Related CN207823749U (en) | 2018-02-09 | 2018-02-09 | Molding die for trigonodont self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207823749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160826A (en) * | 2018-02-09 | 2018-06-15 | 浙江俊荣五金工业有限公司 | For the molding die of trigonodont self-tapping screw |
-
2018
- 2018-02-09 CN CN201820257814.7U patent/CN207823749U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160826A (en) * | 2018-02-09 | 2018-06-15 | 浙江俊荣五金工业有限公司 | For the molding die of trigonodont self-tapping screw |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180907 Termination date: 20210209 |