CN209318697U - Special-shaped screw and its molding machine - Google Patents
Special-shaped screw and its molding machine Download PDFInfo
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- CN209318697U CN209318697U CN201821849020.6U CN201821849020U CN209318697U CN 209318697 U CN209318697 U CN 209318697U CN 201821849020 U CN201821849020 U CN 201821849020U CN 209318697 U CN209318697 U CN 209318697U
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- shaped screw
- head
- bar portion
- mold
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Abstract
The utility model discloses a kind of special-shaped screw and its molding machines, the special-shaped screw includes head for connecting with moulding and the bar portion connecting with head integral type, wherein, the centre of surface on the head is provided with counterbore, several protrusions are evenly arranged with around the counterbore one circle, the protrusion is gradually increased outward by the center on head, and the bar portion surface is provided with thread.The special-shaped screw of the utility model is provided with counterbore and multiple protrusions on head, and gradually change the shape of protrusion, when special-shaped screw is connect with moulding, contact area between the two increases and engages more closely, even if being influenced by external force, special-shaped screw will not fall off from moulding, it is ensured that conductive copper sheet can reduce production cost by normal mounting.
Description
Technical field
The utility model relates to cold-heading molding field, in particular to a kind of special-shaped screw and its molding machine.
Background technique
Automobile fuse box is the box for installing automobile fuse, is responsible for conveying to drive to each position of car body believing
Breath is that technology content is higher in the critical component and car body in Vehicle Electronic Control element, it is stringenter to require technique
One of component.
Conductive copper sheet is the important component in automobile fuse box, is usually fixed on inside automobile fuse box by fastener.It is existing
Some fasteners be the moulding with screw, that is, the head of screw connected with moulding integrated injection molding after to conductive copper sheet into
Row is fixed, and during this, is influenced by external force, and screw is easy to fall off from moulding, causes conductive copper sheet cannot be by normal mounting.
Utility model content
The utility model provides a kind of special-shaped screw and its molding machine, is asked with solving above-mentioned technology in the prior art
Topic.
In order to solve the above technical problems, the utility model provides a kind of special-shaped screw, comprising: for what is connect with moulding
Head and the bar portion being connect with head integral type, wherein the centre of surface on the head is provided with counterbore, surrounds the counterbore one
Circle is evenly arranged with several protrusions, and the protrusion is gradually increased outward by the center on head, and the bar portion surface is provided with spiral shell
Tooth.
Preferably, the head is step structure, including described in the first step connecting with raised integral type and connection
The second step of first step and bar portion, wherein the outer diameter of the bar portion is less than the outer diameter of second step, the outer diameter of second step
Less than the outer diameter of first step.
Preferably, the junction of the bar portion and second step is provided with chamfering.
Preferably, the protrusion is pyramidal structure.
Preferably, matcoveredn is plated on the head and bar portion surface.
The utility model also provides a kind of molding machine of special-shaped screw, comprising: for the head to the special-shaped screw
With the molding cold headers of bar portion, it is used to form the thread rolling machine of bar portion thread, for being heat-treated to the special-shaped screw after threading
Heating equipment and for the surface processing equipment to the special-shaped screw electro-cladding.
Preferably, the cold headers include: material cutting mechanism, ejecting mechanism, transport mechanism and five molds, wherein
The material cutting mechanism is arranged on the ejecting mechanism, and the ejecting mechanism is arranged successively with five molds, the transmission
Mechanism moving feeding between the ejecting mechanism and five molds.
Preferably, five molds include: the first mold for carrying out undergauge processing to wire rod, for undergauge
Wire rod afterwards carries out the second mold of head jumping-up, for the third mold that head upsetting is tapered, heavy for being formed on head
Hole and protrusion and the 4th mold to bar portion shaping and the 5th mold for cutting off extra rim charge.
Preferably, five molds include main mould and punch die corresponding with main mould.
Preferably, being provided with die springs and punch die thimble in the punch die of the 4th mold.
Compared with prior art, the utility model has the advantage that
1, the special-shaped screw of the utility model is provided with counterbore and multiple protrusions on head, and becomes the shape of protrusion gradually
Change, when special-shaped screw is connect with moulding, contact area between the two increases and engages more closely, even if by
External force influences, and special-shaped screw will not fall off from moulding, it is ensured that conductive copper sheet can be reduced and be produced by normal mounting
This.
2, the utility model forms the structure of special-shaped screw using cold headers, and by the way that multiple molds are arranged gradually
Cold-heading, it is ensured that during cold-heading, material flowing is smooth, and then alleviates the punch die stress of mold, while ensure that the essence of product
Degree, improves the quality of product, reduces production cost, improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the special-shaped screw of the utility model；
Fig. 2 is the head construction schematic diagram of the special-shaped screw of the utility model；
Fig. 3 is the structural schematic diagram of cold headers in the utility model；
Fig. 4 is the wire rod structure schematic diagram in the utility model under different processes.
It is as shown in the figure: 10, head；101, counterbore；102, raised；103, first step；104, second step；105, recessed
Slot；20, bar portion；201, thread.
310, the first mold；320, the second mold；330, third mold；340, the 4th mold；350, the 5th mold.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.It should be noted that the utility model attached drawing is all made of simplified form
And non-accurate ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.
As shown in Figure 1 to Figure 2, the utility model provides a kind of special-shaped screw, comprising: the head for connecting with moulding
10 and the bar portion 20 that is connect with 10 integral type of head, wherein the centre of surface on the head 10 is provided with counterbore 101, surrounds institute
It states the circle of counterbore 101 1 and is evenly arranged with several raised 102.Specifically, the protrusion 102 in the present embodiment is provided with 8, and described 8
A raised 102 are uniformly distributed, and the region between two protrusions 102 is defined as groove 105, the groove 105 in the prior art
Cross recess, the slot of screw head etc. compared to wanting deep more, i.e., described raised 102 height is larger, at least accounts for head 10
The one third of height, so as to closely be connect with moulding.
It is gradually increased outward with continued reference to Fig. 1 and Fig. 2, described raised 102 by the center on head 10, due to head 10
Center is counterbore 101, therefore the surface of protrusion 102 is fan-shaped, i.e., the radian at 10 center of head is smaller, close to 10 side of head
The radian of edge is larger.Further, described raised 102 be pyramidal structure, and in other words, all sides of protrusion 102 are oblique
Face, the inclined-plane from the bottom (positioned at the surface on head 10) of protrusion 102 to top (raised 102 surfaces far from head 10) gradually
Reduce, and then forms cone structure.
Further, the head 10 is step structure, the first step 103 including being connect with raised 102 integral types and
Connect the second step 104 of the first step 103 and bar portion 20, wherein the outer diameter of the bar portion 20 is less than second step 104
Outer diameter, the outer diameter of second step 104 is less than the outer diameter of first step 103.Head 10 is designed as step structure, increases head
The volume shared in entire special-shaped screw of portion 10, is not only convenient for connecting with moulding in this way, while convenient for carrying out to bar portion 20
Control.
Preferably, the bar portion 20 and the junction of second step 104 are provided with chamfering, and 20 surface of the bar portion
It is provided with thread 201, conductive copper sheet can be fixed in automobile fuse box by thread 201.
Preferably, matcoveredn is plated on the head 10 and 20 surface of bar portion, special-shaped screw is protected, it is avoided to be corroded
It gets rusty.
The utility model also provides a kind of molding machine of special-shaped screw, comprising: for the head to the special-shaped screw
10 and the molding cold headers of bar portion 20, it is used to form the thread rolling machine of the thread 201 of bar portion 20, for the special-shaped screw after threading
The heating equipment that is heat-treated and for the surface processing equipment to the special-shaped screw electro-cladding.
The cold headers include: material cutting mechanism, ejecting mechanism, transport mechanism and five molds, wherein the stock-cutter
Structure is arranged on the ejecting mechanism, and the ejecting mechanism is arranged successively with five molds, and the transport mechanism is described
Moving feeding between ejecting mechanism and five molds.
Please emphasis referring to Fig. 3 and Fig. 4, five molds include: the first mold for carrying out undergauge processing to wire rod
310, for carrying out the second mold 320 of 10 jumping-up of head to the wire rod after undergauge, for the third that 10 upsetting of head is tapered
Mold 330, for forming counterbore 101 with protrusion 102 and the 4th mold 340 to 20 shaping of bar portion on head 10 and for cutting off
5th mold 350 of extra rim charge.
Specifically, five molds include main mould and punch die corresponding with main mould.Wherein, since special-shaped screw has
Head is larger but structure feature that bar portion is shorter, therefore is provided with die springs and punching in the punch die of the 4th mold 340
Mould thimble first pushes punch die thimble using die springs, wire rod to be punched is sent before the 4th mold 340 carries out punching press
Enter into the type chamber of 340 main mould of the 4th mold, then carry out cold-heading punching press, it is ensured that special-shaped screw can be formed smoothly.
Preferably, the material cutting mechanism uses scissors, equidistant shearing is carried out to wire rod.The transport mechanism is using folder
Sub-folder line taking material.Certainly, the transport mechanism is provided with multiple groups, and then can carry out movement between any two groups of molds and send
Material.
With continued reference to Fig. 1 to Fig. 4, the following detailed description of the course of work of the utility model:
Wire rod is cut by cutting mechanism, and is clipped in the first mold 310 by transport mechanism by clip, first mold
310 to wire rod carry out diameter reducing extrusion molding, obtain thin bar wire rod, be conducive to subsequent forming.
The good station material of undergauge is transplanted on the second mold 320,320 die springs of the second mold using transport mechanism
Activity to wire rod carry out head jumping-up, wherein the movable mesh of spring be guarantee 10 jumping-up of head stability, be conducive to rear station at
Type.
Then, jumping-up good wire rod in head is transplanted in third mold 330 using transport mechanism, the third mold
330 carry out jumping-up to head 10 again, and make 10 jumping-up shape taper of head, while packaging head stepped is full, with
Just protrusion 102 and groove 105 are formed in subsequent work stations.
Then, the wire rod taken out from third mold 330 is sent to the 4th mold 340, the splicing spring of the 4th mold 340
Punch die thimble is stretched out in advance, wire rod is pushed into die cavity, guaranteed smooth into mould.Then, stick is rushed in the 4th mold 340, passed through
Cold-heading is carried out to wire rod, forms protrusion 102 and groove 105, and shaping is carried out to bar portion 20.
Finally, the wire rod shaped is pressed from both sides in the 5th mold 350.5th mold 350 cuts material extra on special-shaped screw
While falling.
Obviously, it is practical new without departing from this can to carry out various modification and variations to utility model by those skilled in the art
The spirit and scope of type.If in this way, these modifications and variations of the present invention belong to the utility model claims and its
Within the scope of equivalent technologies, then the utility model is also intended to including these modification and variations.
Claims (10)
1. a kind of special-shaped screw characterized by comprising head for being connect with moulding and connect with head integral type
Bar portion, wherein the centre of surface on the head is provided with counterbore, is evenly arranged with several protrusions, institute around the counterbore one circle
It states protrusion to be gradually increased outward by the center on head, the bar portion surface is provided with thread.
2. special-shaped screw as described in claim 1, which is characterized in that the head is step structure, including integrated with protrusion
The first step of formula connection and the second step for connecting the first step and bar portion, wherein the outer diameter of the bar portion is less than the
The outer diameter of two steps, the outer diameter of second step are less than the outer diameter of first step.
3. special-shaped screw as claimed in claim 2, which is characterized in that the junction of the bar portion and second step is provided with down
Angle.
4. special-shaped screw as described in claim 1, which is characterized in that the protrusion is pyramidal structure.
5. special-shaped screw as described in claim 1, which is characterized in that matcoveredn is plated on the head and bar portion surface.
6. a kind of molding machine of special-shaped screw as claimed in any one of claims 1 to 5, wherein characterized by comprising be used for
The molding cold headers in head and bar portion to the special-shaped screw, after being used to form the thread rolling machine of bar portion thread, being used for threading
The heating equipment that is heat-treated of special-shaped screw and for the surface processing equipment to the special-shaped screw electro-cladding.
7. the molding machine of special-shaped screw as claimed in claim 6, which is characterized in that the cold headers include: material cutting mechanism,
Ejecting mechanism, transport mechanism and five molds, wherein the material cutting mechanism is arranged on the ejecting mechanism, the ejection
Mechanism is arranged successively with five molds, and transport mechanism movement between the ejecting mechanism and five molds is sent
Material.
8. the molding machine of special-shaped screw as claimed in claim 7, which is characterized in that five molds include: for pair
Wire rod carries out the first mold of undergauge processing, for carrying out the second mold of head jumping-up to the wire rod after undergauge, being used for head
The tapered third mold of portion's upsetting, for forming counterbore and raised and the 4th mold to bar portion shaping on head and for cutting off
5th mold of extra rim charge.
9. the molding machine of special-shaped screw as claimed in claim 8, which is characterized in that five molds include main mould and
Punch die corresponding with main mould.
10. the molding machine of special-shaped screw as claimed in claim 9, which is characterized in that set in the punch die of the 4th mold
It is equipped with die springs and punch die thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849020.6U CN209318697U (en) | 2018-11-09 | 2018-11-09 | Special-shaped screw and its molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821849020.6U CN209318697U (en) | 2018-11-09 | 2018-11-09 | Special-shaped screw and its molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209318697U true CN209318697U (en) | 2019-08-30 |
Family
ID=67710004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821849020.6U Active CN209318697U (en) | 2018-11-09 | 2018-11-09 | Special-shaped screw and its molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209318697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545996A (en) * | 2020-04-23 | 2020-08-18 | 成都迈特航空制造有限公司 | Machining method of flat-head bolt for locking hoop |
| CN113814345A (en) * | 2021-09-18 | 2021-12-21 | 上海洋洋大多利五金制品有限公司 | Production process of self-tapping and self-drilling screw with strong fixing force |
-
2018
- 2018-11-09 CN CN201821849020.6U patent/CN209318697U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545996A (en) * | 2020-04-23 | 2020-08-18 | 成都迈特航空制造有限公司 | Machining method of flat-head bolt for locking hoop |
| CN113814345A (en) * | 2021-09-18 | 2021-12-21 | 上海洋洋大多利五金制品有限公司 | Production process of self-tapping and self-drilling screw with strong fixing force |
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