CN208247823U - A kind of lead for retractable pencil plane of soft lead for retractable pencil - Google Patents
A kind of lead for retractable pencil plane of soft lead for retractable pencil Download PDFInfo
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- CN208247823U CN208247823U CN201721227151.6U CN201721227151U CN208247823U CN 208247823 U CN208247823 U CN 208247823U CN 201721227151 U CN201721227151 U CN 201721227151U CN 208247823 U CN208247823 U CN 208247823U
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- retractable pencil
- lead
- pen
- rolling hole
- oblique section
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Abstract
The utility model relates to a kind of lead for retractable pencil of soft lead for retractable pencil planes, including being molded monomer, the pen-rolling hole in coniform setting is provided in injection molding monomer, and the side of the pen-rolling hole is provided with oblique section, pen-rolling hole side is provided with crumb mouth, its plane of the crumb mouth coincides with the oblique section, the injection molding monomer corresponds to oblique section position and is provided with the wall extension extended to the crumb mouth direction of the pen-rolling hole, and the wall extension has the cutting edge being placed between the oblique section and two intersecting lenses of coniform pen-rolling hole.Technical solutions of the utility model have without assembling, yield rate is higher, rolls up a better effect, the technical effect that the service life is longer.
Description
Technical field
The utility model relates to a kind of lead for retractable pencil of soft lead for retractable pencil planes.
Background technique
Soft lead for retractable pencil is typically fabricated as color lead, and hardness is lower, the lead for retractable pencil plane and hard of soft lead for retractable pencil in the prior art
Lead for retractable pencil is identical, and there are three kinds of structures.
The first is dug for single moulding and cutter hub by the lead for retractable pencil of the soft lead for retractable pencil of screw locking type.Moulding forms spiral shell
Hole, cutter hub are machined with connecting hole, and when assembly, which is cooperated the connecting hole of cutter hub and screw hole by screw, is fixed on moulding for cutter hub
On.In use, screw is easy to produce loosening to the lead for retractable pencil plane of soft lead for retractable pencil, after user's tightening screw again, just not
Easily guarantee that the cutting edge of cutter hub and crumb mouth place plane are affixed and the cutting edge of cutter hub is placed in crumb mouth place plane and tapered volume
Between two intersecting lenses of the tapered surface in hole, it is deteriorated so that the lead for retractable pencil of soft lead for retractable pencil be caused to dig effect, or even cannot carry out again
Pen is rolled up, so that influencing the service life of the lead for retractable pencil plane of soft lead for retractable pencil.
Second is the lead for retractable pencil of two mouldings and the soft lead for retractable pencil of cutter hub embedded locating type plane.Cutter hub is directly embedded into a note
After in plastic and three faces of cutter hub are positioned, then the moulding is embedded in another moulding, the fourth face of cutter hub is determined
Position, to guarantee that the cutting edge of cutter hub and crumb mouth place plane are affixed and the cutting edge of cutter hub is placed in crumb mouth place plane and cone
Between two intersecting lenses in the tapered face of type pen-rolling hole, there could be preferable volume effect.But due to two mouldings it
Between be easy that there are errors, to can not necessarily guarantee the cone of plane and tapered pen-rolling hole where the cutting edge of cutter hub is placed in crumb mouth
Between two intersecting lenses in type face, to cause high rejection rate.
The third digs for the lead for retractable pencil of moulding and the cutter hub soft lead for retractable pencil of injection molding type simultaneously.The technical solution, exists to workpiece
Requirement on machining accuracy is high, in process of producing product the shortcomings that high rejection rate.Since cutter hub is a smaller and relatively thin component, it is
Cutter hub accurately positioned, mold mechanism is complicated, although cutter hub correspond to pen-rolling hole side can by pen-rolling hole at
Type type core is preferably positioned, but cutter hub then needs to be positioned by larger workpiece with respect to the pen-rolling hole other side, thus shadow
The lead for retractable pencil for having rung soft lead for retractable pencil digs the limit wall area of the corresponding position, and then affects the intensity of the lead for retractable pencil plane of soft lead for retractable pencil,
So that influencing its service life.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide one kind to be not necessarily to assembling, yield rate more
The lead for retractable pencil plane of high, volume better effect, the soft lead for retractable pencil that the service life is longer.
To achieve the above object, the utility model provides following technical solution: a kind of lead for retractable pencil plane of soft lead for retractable pencil, including
It is molded monomer, is molded the pen-rolling hole being provided in monomer in coniform setting, and the side of the pen-rolling hole is provided with bevel
Face, pen-rolling hole side are provided with crumb mouth, its plane of the crumb mouth coincides with the oblique section, and the injection molding monomer is corresponding
Oblique section position is provided with the wall extension extended to the crumb mouth direction of the pen-rolling hole, and the wall extension is described oblique with being placed in
Cutting edge between section and two intersecting lenses of coniform pen-rolling hole.
By using above-mentioned technical proposal, wall extension and its cutting edge are integrally molded together with injection molding monomer, and cutting edge is just
Can soft lead for retractable pencil lower to hardness plane, be not necessarily to cutter hub, thus have without assembling, yield rate it is higher, volume effect
More preferably, the effect that the service life is longer.
The utility model is further arranged: the wall extension corresponds to pen-rolling hole side and is set as coinciding with the oblique section
Plane.
By using above-mentioned technical proposal, so that cutting edge has higher-strength, and planing effect is improved, and be conveniently molded into
Type.
The utility model is further arranged: the injection molding monomer is provided with and the pen-rolling hole with respect to the other side of wall extension
The groove that is conducted of front end.
By using above-mentioned technical proposal, when injection molding, in respective slot position setting type core, to the type core of molding pen-rolling hole
It is positioned, improves yield rate.
The utility model is further arranged: the axis perpendicular of the axis of the groove and the pen-rolling hole is arranged.
It is conveniently stripped while the positioning of type core is more accurate when injection molding by using above-mentioned technical proposal.
The utility model is further arranged: the bottom that plane and the oblique section where the groove is provided with it coincide
Wall, the cutting edge of the wall extension extend in the groove.
By using above-mentioned technical proposal, soft lead for retractable pencil is enabled to keep its front end sharper when planing.
The utility model is further arranged: the side that the injection molding monomer corresponds to wall extension is provided with and the crumb mouth phase
The cavity of conducting.
By using above-mentioned technical proposal, when injection molding, in respective cavities position setting type core, to form wall extension and its sword
Mouth and crumb mouth.
The utility model is further arranged: the cavity and the groove are conducted setting.
By using above-mentioned technical proposal, when injection molding, in respective cavities position, the type core of setting is set with respective slot position
The type core set mutually positions, and improves yield rate.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is that the lead for retractable pencil of the soft lead for retractable pencil of the utility model digs example structure figure one；
Fig. 2 is that the lead for retractable pencil of the soft lead for retractable pencil of the utility model digs example structure figure two；
Fig. 3 is that the lead for retractable pencil of the soft lead for retractable pencil of the utility model digs example structure figure three；
Fig. 4 is the A-A cross-sectional view of Fig. 3；
Fig. 5 is the B-B cross-sectional view of Fig. 3；
Fig. 6 is the C-C cross-sectional view of Fig. 3.
Specific embodiment
Referring to attached drawing 1 to attached drawing 6, the lead for retractable pencil of soft lead for retractable pencil disclosed by the utility model is dug, including injection molding monomer 1, injection molding
It is provided with the pen-rolling hole 101 in coniform setting in monomer 1, and the side of the pen-rolling hole 101 is provided with oblique section, rolls up pen
101 side of hole is provided with crumb mouth 102, and described its plane of crumb mouth 102 coincides with the oblique section, the injection molding monomer 1
Corresponding oblique section position is provided with the wall extension 11 extended to 102 direction of crumb mouth of the pen-rolling hole 101, the wall extension 11
With the cutting edge 111 being placed between the oblique section and two intersecting lenses of coniform pen-rolling hole 101, the wall extension 11 is corresponding
101 side of pen-rolling hole is set as the plane to coincide with the oblique section.By using above-mentioned technical proposal, wall extension 11 and
Its cutting edge 111 with injection molding monomer 1 is whole is molded together, cutting edge 111 just can soft lead for retractable pencil lower to hardness plane, nothing
Cutter hub is needed, to have the effect of without assembling, yield rate is higher, volume better effect, the service life is longer.
The present embodiment is further arranged: the injection molding monomer 1 is provided with and the volume pen with respect to the other side of wall extension 11
The groove 103 that the front end in hole 101 is conducted.By using above-mentioned technical proposal, when injection molding, it is arranged in 103 position of respective slot
Type core positions the type core of molding pen-rolling hole 101, improves yield rate.The present embodiment is preferred, the axis of the groove 103
The axis perpendicular of line and the pen-rolling hole 101 is arranged.By using above-mentioned technical proposal, the positioning of type core is more accurate when injection molding
While it is conveniently stripped.
The present embodiment is further arranged: the bottom that plane and the oblique section where the groove 103 is provided with it coincide
Wall 1031, the cutting edge 111 of the wall extension 11 extend in the groove 103.By using above-mentioned technical proposal, so that soft
Lead for retractable pencil can make its front end sharper when planing.
The present embodiment is further arranged: the side of the corresponding wall extension 11 of injection molding monomer 1 is provided with and the crumb mouth
102 cavitys 104 being conducted.By using above-mentioned technical proposal, when injection molding, in 104 position setting type core of respective cavities, at
Type wall extension 11 and its cutting edge 111 and crumb mouth 102.The present embodiment is preferred, the cavity 104 and 103 phase of groove
Conducting setting.By using above-mentioned technical proposal, when injection molding, the type core and respective slot 103 of setting in 104 position of respective cavities
The type core of position setting mutually positions, and improves yield rate.
Claims (8)
1. a kind of lead for retractable pencil of soft lead for retractable pencil is dug, including injection molding monomer, it is molded the pen-rolling hole being provided in monomer in coniform setting,
And the side of the pen-rolling hole is provided with oblique section, and pen-rolling hole side is provided with crumb mouth, its plane of the crumb mouth and institute
It states oblique section to coincide, it is characterised in that: the injection molding monomer corresponds to oblique section position and is provided with to the pen-rolling hole to go out to consider to be worth doing
The wall extension that mouth direction extends, the wall extension, which has, to be placed between the oblique section and two intersecting lenses of coniform pen-rolling hole
Cutting edge.
2. the lead for retractable pencil of soft lead for retractable pencil according to claim 1 is dug, it is characterised in that: the wall extension corresponds to pen-rolling hole side
It is set as the plane to coincide with the oblique section.
3. the lead for retractable pencil of soft lead for retractable pencil according to claim 1 is dug, it is characterised in that: the injection molding monomer is with respect to wall extension
The other side is provided with the groove being conducted with the front end of the pen-rolling hole.
4. the lead for retractable pencil of soft lead for retractable pencil according to claim 3 is dug, it is characterised in that: the axis of the groove and the volume pen
The axis perpendicular in hole is arranged.
5. the lead for retractable pencil of soft lead for retractable pencil according to claim 3 is dug, it is characterised in that: the groove is provided with plane where it
The bottom wall to coincide with the oblique section, the cutting edge of the wall extension extend in the groove.
6. the lead for retractable pencil of soft lead for retractable pencil according to claim 1 is dug, it is characterised in that: the injection molding monomer corresponds to wall extension
Side is provided with the cavity being conducted with the crumb mouth.
7. the lead for retractable pencil of the soft lead for retractable pencil according to claim 3 or 4 or 5 is dug, it is characterised in that: the injection molding monomer correspondence is prolonged
The side for stretching wall is provided with the cavity being conducted with the crumb mouth.
8. the lead for retractable pencil of soft lead for retractable pencil according to claim 7 is dug, it is characterised in that: the cavity is conducted with the groove
Setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721227151.6U CN208247823U (en) | 2017-09-22 | 2017-09-22 | A kind of lead for retractable pencil plane of soft lead for retractable pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721227151.6U CN208247823U (en) | 2017-09-22 | 2017-09-22 | A kind of lead for retractable pencil plane of soft lead for retractable pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208247823U true CN208247823U (en) | 2018-12-18 |
Family
ID=64618957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721227151.6U Active CN208247823U (en) | 2017-09-22 | 2017-09-22 | A kind of lead for retractable pencil plane of soft lead for retractable pencil |
Country Status (1)
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|---|---|
| CN (1) | CN208247823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618303A (en) * | 2017-09-22 | 2018-01-23 | 丁但凌 | A kind of lead for retractable pencil plane of soft lead for retractable pencil |
-
2017
- 2017-09-22 CN CN201721227151.6U patent/CN208247823U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618303A (en) * | 2017-09-22 | 2018-01-23 | 丁但凌 | A kind of lead for retractable pencil plane of soft lead for retractable pencil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190408 Address after: 325000 Floor 1-3 of Xingyun Road, Wenzhou Agricultural External Comprehensive Development Zone, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Wenzhou Bai pen pen industry Co., Ltd. Address before: Room 3-602, Beautiful Garden, Wenzhou New Town, Zhejiang Province, 325000 Patentee before: Ding Danling |