CN214239444U - Mold for pencil molding - Google Patents
Mold for pencil molding Download PDFInfo
- Publication number
- CN214239444U CN214239444U CN202022685065.8U CN202022685065U CN214239444U CN 214239444 U CN214239444 U CN 214239444U CN 202022685065 U CN202022685065 U CN 202022685065U CN 214239444 U CN214239444 U CN 214239444U
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- pencil
- sleeve
- outlet
- rod
- skin
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- 238000000465 moulding Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 87
- 238000009826 distribution Methods 0.000 claims abstract description 28
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract description 7
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 21
- 230000000087 stabilizing effect Effects 0.000 description 12
- 238000005253 cladding Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
本实用新型涉及共挤模具技术领域，具体地说是一种铅笔成型用模具。包括设有两段圆锥形分料稳流段的铅笔芯锥套和依次连接的进口套板、铅笔杆锥套、铅笔表皮锥套和出口套板，铅笔芯锥套的一端依次从铅笔杆锥套和铅笔表皮锥套的内部穿过并延伸至出口套板的出口腔中。本实用新型通过对铅笔杆料进行两段圆锥形分料稳流段的设计，可使从一侧进入模具的笔杆物料均匀分布在笔杆物料流道内，有效地避免了因笔杆物料进料侧压力较大导致的铅笔容易偏心和笔杆挤出不完整的问题；通过使用笔杆流道稳流段的设计和笔芯进料腔延伸至出口套板内，可有效避免在铅笔共挤出成型时笔杆物料对笔芯的挤出压力，有效解决笔芯容易断裂的问题。
The utility model relates to the technical field of co-extrusion dies, in particular to a pencil molding die. It includes a pencil core taper sleeve with two conical material-distributing and steady flow sections, an inlet sleeve plate, a pencil rod taper sleeve, a pencil skin taper sleeve and an outlet sleeve board which are connected in sequence. The interior of the sleeve and pencil skin taper sleeve passes through and extends into the outlet cavity of the outlet sleeve. The utility model adopts the design of two conical material distribution and steady flow sections for the pencil rod material, so that the pen rod material entering the mold from one side can be evenly distributed in the pen rod material flow channel, and the pressure on the feeding side of the pen rod material can be effectively avoided. Pencils are prone to eccentricity and incomplete extrusion of the barrel caused by the larger size; by using the design of the stable flow section of the barrel flow channel and the extension of the refill feed cavity into the outlet sleeve, the barrel can be effectively avoided when the pencil is co-extruded. The extrusion pressure of the material on the refill effectively solves the problem that the refill is easy to break.
Description
Technical Field
The utility model belongs to the technical field of crowded mould technique altogether and specifically relates to a mould is used in pencil shaping.
Background
The traditional wooden pencil rod is mainly prepared from natural wood resources, which is unfavorable for ecological environment protection, and meanwhile, the traditional wooden pencil rod has the problems of large pollution, intensive labor, low production efficiency and the like in the processing process. Therefore, the development of new environment-friendly pencil holder is an urgent technical demand for the sustainable development of the pencil industry.
Patent 201720643049.8 discloses a plastics pencil forming die, this mould of characterized by includes outer barrel and mould core, and the mould core is installed in the concentric cylinder shoulder hole of outer barrel, and the mould core includes lead core taper sleeve, pole material taper sleeve, cladding feeding ring and cladding taper sleeve, however this mould design structure is heavy, loaded down with trivial details, and pencil pole material and pencil table cladding are all directly converged through the runner clearance simultaneously, cause the material maldistribution in runner clearance to lead to the pencil disqualification rate of extruding to be higher easily.
Patent 201821388259.8 discloses a light and handy type plastics pencil extrusion tooling, this mould of characterized by is including taking the import seat of lead core feed inlet, the pole material taper sleeve of setting at the import seat lower extreme, set up cladding material taper sleeve and the export seat of setting at the cladding material taper sleeve lower extreme under the pole material taper sleeve, and set up the material transition chamber on pole material clearance and cladding material clearance, the inhomogeneous phenomenon of part has been avoided extruding out to the material effectively, nevertheless when the great cladding of lead core of pen-holder material pressure appears easily when coextrusion molding, lead to the easy phenomenon of lead core appearance fracture, influence the stability and the continuity of product production.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a mold for pencil molding.
The purpose of the utility model is realized through the following technical scheme:
a mold for pencil molding comprises an inlet sleeve plate, a pencil rod taper sleeve, a pencil skin taper sleeve and an outlet sleeve plate which are sequentially connected, wherein a pencil lead feeding port is formed in the inlet sleeve plate, an outlet cavity is formed in the outlet sleeve plate, and an outlet fixed mold core is arranged at an opening of the outlet cavity in the outlet sleeve plate;
one end of the inlet sleeve plate is connected with a pencil lead taper sleeve, one end of the pencil lead taper sleeve sequentially penetrates through the interior of the pencil rod taper sleeve and the interior of the pencil skin taper sleeve and extends into the outlet cavity, a pencil lead feeding cavity is arranged in the pencil lead taper sleeve, and two ends of the pencil lead feeding cavity are respectively communicated with the outlet cavity and the pencil lead feeding hole;
the pencil surface skin taper sleeve is provided with a pencil surface skin feeding hole and a pencil surface skin feeding cavity, a surface skin material flow channel gap is formed between the pencil surface skin taper sleeve and the pencil rod taper sleeve, and the pencil surface skin feeding hole, the pencil surface skin feeding cavity and the surface skin material flow channel gap are sequentially communicated with the outlet cavity;
the pencil holder is characterized in that a pencil holder feeding port is formed in the pencil holder taper sleeve, a pencil holder material flow channel gap is formed between the pencil core taper sleeve and the pencil holder taper sleeve, the pencil holder material flow channel gap is communicated with the outlet cavity, a pencil holder material shunt channel is further arranged inside the pencil core taper sleeve, the pencil holder material shunt channel comprises two pencil holder material distribution flow stabilizing sections A and two pencil holder material distribution flow stabilizing sections A, the two pencil holder material distribution flow stabilizing sections A are respectively communicated with the pencil holder feeding port, one of the pencil holder material distribution flow stabilizing sections A is divided into two pencil holder material distribution flow stabilizing sections B, the other pencil holder material distribution flow stabilizing section A is divided into two pencil holder material distribution flow stabilizing sections B, and the four pencil holder material distribution flow stabilizing sections B are respectively communicated with the pencil holder material flow channel gap.
Preferably, the two pencil holder material distributing and flow stabilizing sections A are uniformly distributed in a conical shape in the pencil lead taper sleeve.
Preferably, the four pencil holder material distributing and flow stabilizing sections B are uniformly distributed in a conical shape in the pencil lead taper sleeve.
Preferably, the inlet sleeve plate is in threaded connection with the pencil lead taper sleeve.
Preferably, the outlet sleeve plate is connected with the pencil skin taper sleeve through a bolt.
Preferably, the outlet sleeve plate, the pencil skin taper sleeve and the pencil rod taper sleeve are connected through a screw rod.
Preferably, the plane included angle between the central line projection line of the pencil shaft feeding hole and the central line projection line of the pencil lead feeding hole is 45-90 degrees.
The utility model discloses an advantage does with positive effect:
the utility model discloses pencil mould structure is light and handy, simple, and the epidermis is even and stable to the material cladding of pen-holder and pen-holder to the refill, and the phenomenon of splitting appears in the difficult coextrusion cladding of pencil refill. The method specifically comprises the following steps:
1) through the design of two sections of conical material distribution and flow stabilization sections on the pencil rod material, the pencil rod material entering the die from one side can be uniformly distributed in the pencil rod material flow channel, and the problems that the pencil is easy to be eccentric and the pencil rod is not extruded completely due to the fact that the feeding side pressure of the pencil rod material is large are effectively avoided;
2) the utility model discloses an in design and the refill feeding chamber that use pen-holder runner stationary flow section extended to the export lagging, can effectively avoid the pen-holder material to the extrusion pressure of refill when pencil coextrusion shaping, effectively solve the easy cracked problem of refill.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic sectional view taken along the line a-a in fig. 1.
In the figure: 1-an inlet sleeve plate, 2-a pencil lead taper sleeve, 3-a pencil lead taper sleeve, 4-a pencil skin taper sleeve, 5-an outlet sleeve plate, 6-an outlet fixed mold core, 7-a pencil lead feeding port, 8-a pencil lead feeding cavity, 9-a pencil lead material flow passage gap, 10-a pencil lead feeding port, 11-a pencil lead material distributing steady flow section A and 111-a pencil lead material distributing steady flow section B, 112-pencil rod material distributing steady flow section B, 12-pencil rod material distributing steady flow section A, 121-pencil rod material distributing steady flow section B, 122-pencil rod material distributing steady flow section B, 13-surface material flow channel gap, 14-pencil surface feed inlet, 15-pencil surface feed cavity, 16-thread, 17-screw, 18-outlet cavity and 19-bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-2.
A mold for forming a pencil comprises an inlet sleeve plate 1, a pencil rod taper sleeve 3, a pencil skin taper sleeve 4 and an outlet sleeve plate 5 which are sequentially connected, wherein a pencil lead feeding port 7 is formed in the inlet sleeve plate 1, an outlet cavity 18 is formed in the outlet sleeve plate 5, an outlet fixed mold core 6 is arranged at an opening of the outlet cavity 18 in the outlet sleeve plate 5, the inlet sleeve plate 1 and the outlet sleeve plate 5 are externally connected and arranged by adopting the prior art, and the internal shape of the outlet fixed mold core 6 adopts the prior art;
one end of the inlet sleeve plate 1 is connected with a pencil lead taper sleeve 2, one end of the pencil lead taper sleeve 2 sequentially penetrates through the interior of the pencil rod taper sleeve 3 and the interior of the pencil skin taper sleeve 4 and extends into the outlet cavity 18, a pencil lead feeding cavity 8 is arranged in the pencil lead taper sleeve 2, and two ends of the pencil lead feeding cavity 8 are respectively communicated with the outlet cavity 18 and the pencil lead feeding hole 7;
the pencil skin taper sleeve 4 is provided with a pencil skin feeding hole 14 and a pencil skin feeding cavity 15, a skin material flow channel gap 13 is formed between the pencil skin taper sleeve 4 and the pencil holder taper sleeve 3, and the pencil skin feeding hole 14, the pencil skin feeding cavity 15, the skin material flow channel gap 13 and the outlet cavity 18 are sequentially communicated;
the pencil holder taper sleeve 3 is provided with a pencil holder feeding port 10, a pencil holder material flow channel gap 9 is formed between the pencil core taper sleeve 2 and the pencil holder taper sleeve 3, the pencil holder material flow channel gap 9 is communicated with the outlet cavity 18, a pencil holder material shunt channel is further arranged inside the pencil core taper sleeve 2 and comprises two pencil holder material distribution steady flow sections A11 and 12, the two pencil holder material distribution steady flow sections A11 and 12 are respectively communicated with the pencil holder feeding port 10, one pencil holder material distribution steady flow section A11 is divided into two pencil holder material distribution steady flow sections B111 and B112, the other pencil holder material distribution steady flow section A12 is divided into two pencil holder material distribution steady flow sections B121 and B122, and the four pencil holder material distribution steady flow sections B111, B112, 121 and B122 are respectively communicated with the pencil holder material flow channel gap 9.
Specifically, the two pencil holder material separating and flow stabilizing sections A11 and 12 are uniformly distributed in a conical shape in the pencil lead taper sleeve 2.
Specifically, the four pencil shaft material separating and flow stabilizing sections B111, 112, 121, and 122 are uniformly distributed in a conical shape inside the pencil lead cone sleeve 2.
Specifically, the inlet sleeve plate 1 is connected with the pencil lead taper sleeve 2 through the threads 16, so that the pencil lead taper sleeve is easy to disassemble and assemble.
Specifically, the outlet sleeve plate 5 and the pencil skin taper sleeve 4 are connected by a bolt 19.
Specifically, the outlet sleeve plate 5, the pencil skin taper sleeve 4 and the pencil holder taper sleeve 3 are connected through a screw 17.
Specifically, the plane included angle between the central line projection line of the pencil shaft feeding hole 10 and the central line projection line of the pencil lead feeding hole 7 is 45-90 degrees, and more progressively can be 60-90 degrees.
The working principle is as follows:
through the design of two sections of conical material distribution and flow stabilization sections on the pencil rod material, the pencil rod material entering the die from one side can be uniformly distributed in the gap of the pencil rod material flow channel, and the problems of easy eccentricity of a pencil and incomplete extrusion of the pencil rod due to large side pressure of the pencil rod material feeding side are effectively avoided; through the design of using the pen holder runner stationary flow section and the extension of refill feeding cavity to the export lagging, can effectively avoid the extrusion pressure of pen-holder material to the refill when the pencil coextrusion molding, effectively solve the easy cracked problem of refill.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022685065.8U CN214239444U (en) | 2020-11-19 | 2020-11-19 | Mold for pencil molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022685065.8U CN214239444U (en) | 2020-11-19 | 2020-11-19 | Mold for pencil molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214239444U true CN214239444U (en) | 2021-09-21 |
Family
ID=77733177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022685065.8U Active CN214239444U (en) | 2020-11-19 | 2020-11-19 | Mold for pencil molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214239444U (en) |
-
2020
- 2020-11-19 CN CN202022685065.8U patent/CN214239444U/en active Active
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