CN114156805B - Unilateral hole flat tube and preparation method thereof - Google Patents
Unilateral hole flat tube and preparation method thereof Download PDFInfo
- Publication number
- CN114156805B CN114156805B CN202111533544.0A CN202111533544A CN114156805B CN 114156805 B CN114156805 B CN 114156805B CN 202111533544 A CN202111533544 A CN 202111533544A CN 114156805 B CN114156805 B CN 114156805B
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- China
- Prior art keywords
- flat tube
- flat
- wire
- die
- tube
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
- H02G3/0487—Tubings, i.e. having a closed section with a non-circular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The flat tube with the unilateral holes and the preparation method provided by the invention comprise flat belts, wherein one side of the flat tube is a wire binding area, the other side of the flat tube is a fixing area, a plurality of wire holes are arranged in the wire binding area, control wires are respectively penetrated into the wire holes to protect the flat tube, insulation protection of wires is enhanced, then the flat tube is fixed in the fixing area through screws, the wires are fixed under constraint, the installation is more convenient, and the problem of wire damage caused by dislocation of screw installation is avoided because the constraint area and the fixing area are positioned at two sides, meanwhile, the attractiveness of the control wires is improved, and the flat tube is convenient to maintain.
Description
Technical Field
The invention relates to the technical field of cable design and manufacture, in particular to a single-side hole flat tube and a preparation method thereof.
Background
The cable carries out circuit conduction and signal transmission's effect in mechanical equipment and the electronic equipment, though the wire cladding has insulating protection layer outward to improve the life of cable, but wear out easily and lead to the insulating destruction, especially damage more in some moving parts, secondly, because the cable quantity is more in the equipment, the wire does not add the constraint moreover and can be very messy, easy card hangs, work efficiency is low, the wire can be touched when equipment is later assembled the installation screw, damage wire insulating layer, also possible break the wire, can cause the short circuit to have fire hazard, the degree of difficulty of maintenance has also been increased simultaneously.
In view of the above, it is necessary to design a cable protection device to improve the life of the cable while avoiding the problem of confusion of wiring.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a unilateral hole flat tube, a preparation method and a die.
The invention is realized by the following technical scheme:
The utility model provides a unilateral hole flat tube, includes the bandlet, and its one side is the bunch district, and the opposite side is the fixed zone, the inside in bandlet bunch district is provided with the line hole, and the axial in line hole sets up along the extension direction of bandlet and runs through the bandlet.
Preferably, the number of the wire holes is multiple, and the wire holes are distributed at intervals along one side of the flat belt to the other side.
Preferably, the vertex angles of the flat belts are provided with chamfers.
Preferably, the area of the top surface and the bottom surface of the flat belt, which are right opposite to the wire holes, is a corrugated surface for marking the positions of the wire holes.
Preferably, the number of the wire holes is plural, and the plurality of wire holes are arranged at intervals along the width direction of the flat belt.
A preparation method of a single-side hole flat tube comprises the following steps:
step 1, drying TPU particles;
Step2, adding the dried TPU particles into an extruder for hot melting, wherein the melt temperature is 170-225 ℃;
step 3, setting extrusion parameters of an extruder, and extruding the molten TPU material into a die to obtain a single-side hole flat tube;
Step 4, cooling the single-side hole flat tube obtained in the step 3 to obtain a cooled single-side hole flat tube;
and 5, cutting the cooled flat tube with the single side hole into a preset length.
Preferably, the drying temperature in the step 1 is 80-120 ℃ and the drying time is 2-3 hours.
Preferably, in the step 4, the single-side hole flat tube is cooled by adopting a water cooling mode, the temperature of the first section water tank starts from 75-85 ℃, and the water temperature is reduced section by section until the room temperature.
Preferably, the mold comprises an outer mold, an inner mold and a pressure tube;
The outer die is one end open-ended hollow structure, the blind end of outer die is provided with the product export, the inside of centre form is provided with the air flue, the entry of air flue is located the one end of centre form, hollow pressure pipe setting is on the terminal surface of the inner die other end and with the air flue intercommunication, the coaxial empty cover of outer die is outside the inner die, the free end of pressure pipe stretches out the product export, the space that forms between outer die and the centre form is the mouth of intaking.
Preferably, the number of pressure tubes is the same as the number of wire holes of the flat tubes.
Compared with the prior art, the invention has the following beneficial technical effects:
The single-side hole flat tube comprises the flat belt, one side of the flat belt is a wire binding area, the other side of the flat belt is a fixing area, a plurality of wire holes are formed in the wire binding area, control wires are respectively penetrated into the wire holes to protect the control wires, insulation protection of the wires is enhanced, then the flat belt is fixed in the fixing area through screws, the wires are fixed under constraint, the installation is more convenient, and the problem of damage to the wires caused by dislocation of the installation of the screws is avoided because the constraint area and the fixing area are positioned on two sides.
Drawings
FIG. 1 is a schematic view of a single-port flat tube according to the present invention;
FIG. 2 is an end view of a single-port flat tube of the present invention;
FIG. 3 is a schematic view of the internal mold of the present invention;
FIG. 4 is a schematic diagram of the internal mold airway of the present invention;
FIG. 5 is a schematic view of the structure of the outer mold of the present invention;
FIG. 6 is a cross-sectional view of a mold of the present invention;
Fig. 7 is a schematic structural view of the mold assembly state of the present invention.
In the figure: 1. a flat belt; 2. a wire hole; 3. an inner mold; 4. a pressure pipe; 5. a fixing ring; 6. an outer mold; 7. a product outlet; 8. an airway; 9. and a glue inlet.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the invention.
Referring to fig. 1 and 2, a single-side hole flat tube includes a flat belt 1 and a wire hole 2 provided in the inside thereof, the axial direction of the wire hole being provided along the extension direction of the flat belt 1 and penetrating the flat belt, and fixing areas of the wire hole and the flat belt being located on both sides of the flat belt.
The number of the wire holes is at least one, when the number of the wire holes is multiple, the wire holes are distributed at intervals along one side of the flat belt to the other side, meanwhile, the fact that the wire holes are not coincident with the fixing area of the flat belt is required to be ensured, and damage to the wire holes in the installation process is avoided.
The apex angle of ribbon strip all is provided with the chamfer, avoids ribbon strip apex angle to cause tearing because of stress concentration to extension ribbon strip's life.
The area of the top surface and the bottom surface of the flat belt, which are right to the wire holes, is a corrugated surface, the positions of the wire holes are marked, the edge of one side of the fixing area of the flat belt is arc-shaped, and a structure different from the other side is formed, so that error-proofing structures are formed on two sides of the flat belt, and damage to wires caused by bolts penetrating through the wire holes in the installation process is avoided.
The single-side hole flat tube is provided with the wire holes according to specific requirements, so that the volume of the flat tube is reduced, the manufacturing cost is reduced, the flat belt is made of TPU material, corresponding wire holes are manufactured according to the number of wires, and the wire holes are preferably arranged at intervals.
Taking the air bag of saddle installation as the example, control line needs to protect with the spool, and control line needs 3 lines, and one side of ribbon is the bunch district, and the opposite side is the fixed zone, sets up 3 line holes at the bunch district, wears 3 control lines respectively in the line hole to protect it, and wire insulation protection is strengthened, then fixes the ribbon through the screw in the fixed zone, and the wire is fixed under the constraint, and it is more convenient to install, because constraint district and fixed zone are located both sides, also avoids the dislocation of screw installation to cause the problem that the wire damaged.
A preparation method of a single-side hole flat tube comprises the following steps:
And step 1, drying TPU particles.
Because TPU has the characteristic of moisture absorption, TPU particles need to be dried, and the phenomenon that the surface of an extruded product has swelled bubbles or the section of the product has holes is avoided. The drying temperature is 80-120 ℃ and the drying time is 2-3 hours.
For example, hopper type drying temperature is 80-110 ℃ and drying time is 3 hours; adopting an oven to dry at 90-120 ℃ for 2 hours; while for slightly less hard TPU, such as below 80A, it is recommended that the drying temperature be below 80 c to prevent the TPU from caking during drying.
And 2, adding the dried TPU particles into an extruder for hot melting, wherein the melt temperature is 170-225 ℃. In the temperature range, the yield is improved, and the raw material loss is reduced.
The hot melting temperature is related to the large size of the product, the extrusion temperature can be correspondingly increased for small-sized products, the temperature has a great influence on the luster of the product, the luster is increased by increasing the temperature, and the temperature of a die opening area can be correspondingly reduced compared with that of a simple body, so that the melt strength can be increased, and the stability of extrusion can be ensured.
170-190 ℃ Of an extruder die head, 180-200 ℃ of a front region and 180-210 ℃ of a middle region; the rear zone 160-180 ℃.
And 3, setting extrusion parameters of an extruder, and extruding the molten TPU material into a die to obtain the single-side hole flat tube.
And 4, cooling the single-side hole flat tube obtained in the step 3 to obtain the cooled single-side hole flat tube.
The water cooling mode is adopted to cool the single-side hole flat tube, the temperature of the first section water tank starts from 75 ℃ to 85 ℃, the water temperature is reduced section by section until the room temperature, and the smaller the temperature difference of the water temperature of each section is, the more reasonable.
And 5, cutting the cooled flat tube with the single side hole into a preset length.
The utility model provides a mould of unilateral hole flat tube, includes external mold 6, centre form 3 and pressure pipe 4, and external mold 6 is one end open-ended hollow structure, and the blind end of external mold is provided with product outlet 7, and the shape of product outlet 7 is the same with the cross-section appearance of flat tube, and the inside of centre form 3 is provided with the air flue, and the entry of air flue 8 is located the one end of centre form, and hollow pressure pipe 4 sets up on the terminal surface of the centre form other end to along the axial setting of centre form, the terminal surface and the air flue intercommunication of the terminal surface of the centre form other end are passed to the tip of pressure pipe, the quantity of pressure pipe is the same with the line hole quantity of flat tube, and the outside of mould is inside to the empty cover of external mold, and product outlet 7 is stretched out to the free end of pressure pipe, and the space that forms between external mold and the centre form is for advancing glue mouth 9, and the open end of centre form is provided with the solid fixed ring 5 that is used for being connected with the extruder.
The outer membrane is connected with the aircraft nose of extruder respectively with the centre form, and the air flue of centre form is connected with the venthole of atmospheric pressure management and control device, and the micelle hot melt back is through the screw rod of extruding the machine, rotatory extrusion to aircraft nose position, then gets into between centre form and the external mould from the glue inlet between centre form and the outer membrane, and the sizing material is extruded from the product export, forms flat area, and gaseous from the pressure pipe is given vent to anger simultaneously to guarantee that the through wires hole can not block up, and the size is in the appointed size.
The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (7)
1. The single-side hole flat tube is characterized by comprising a flat belt (1), wherein one side of the flat belt is a wire bundling area, the other side of the flat belt is a fixing area, a wire hole (2) is formed in the flat belt wire bundling area, and the axial direction of the wire hole is arranged along the extending direction of the flat belt (1) and penetrates through the flat belt;
the preparation method of the unilateral hole flat tube comprises the following steps:
step 1, drying TPU particles;
Step2, adding the dried TPU particles into an extruder for hot melting, wherein the melt temperature is 170-225 ℃;
step 3, setting extrusion parameters of an extruder, and extruding the molten TPU material into a die to obtain a single-side hole flat tube;
the die comprises an outer die (6), an inner die (3) and a pressure tube (4);
The outer die (6) is of a hollow structure with one end open, a product outlet (7) is formed in the closed end of the outer die, an air passage is formed in the inner die (3), an inlet of the air passage (8) is positioned at one end of the inner die, the hollow pressure tube (4) is arranged on the end face of the other end of the inner die and is communicated with the air passage, the outer die is coaxially sleeved outside the inner die, the free end of the pressure tube extends out of the product outlet (7), and a space formed between the outer die and the inner die is a glue inlet (9);
Step 4, cooling the single-side hole flat tube obtained in the step 3 to obtain a cooled single-side hole flat tube;
and 5, cutting the cooled flat tube with the single side hole into a preset length.
2. The single-sided flat tube as claimed in claim 1, wherein the number of the wire holes is plural, and the plurality of wire holes are arranged at intervals along one side of the flat belt to the other side.
3. A single-hole flat tube as claimed in claim 1, wherein the flat belts are each provided with a chamfer at their apex angle.
4. A single-sided flat tube according to claim 1, wherein the regions of the top and bottom surfaces of the flat strip facing the wire holes are corrugated surfaces for identifying the positions of the wire holes.
5. The flat tube with single-sided pores as claimed in claim 1, wherein the drying temperature in step 1 is 80 to 120 ℃ and the drying time is 2 to 3 hours.
6. The flat tube with single-sided aperture as claimed in claim 1, wherein the flat tube with single-sided aperture is cooled by water cooling in step 4, and the temperature of the first water tank is reduced from 75 to 85 ℃ to room temperature section by section.
7. A single-port flat tube as claimed in claim 1, wherein the number of pressure tubes is equal to the number of wire ports of the flat tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111533544.0A CN114156805B (en) | 2021-12-15 | 2021-12-15 | Unilateral hole flat tube and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111533544.0A CN114156805B (en) | 2021-12-15 | 2021-12-15 | Unilateral hole flat tube and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114156805A CN114156805A (en) | 2022-03-08 |
| CN114156805B true CN114156805B (en) | 2024-05-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111533544.0A Active CN114156805B (en) | 2021-12-15 | 2021-12-15 | Unilateral hole flat tube and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114156805B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807062A (en) * | 2006-02-08 | 2006-07-26 | 扬中市星鑫工程管道厂 | Preparation method of modified ultrahigh molecular weight polyethylene powder direct extruded tubing |
| CN209766064U (en) * | 2019-06-13 | 2019-12-10 | 江苏宇航特种线缆有限公司 | Flexible cable with strong bending resistance |
| CN211719325U (en) * | 2020-03-22 | 2020-10-20 | 海悦电缆制造有限公司 | Parallel multi-strand control cable of symmetrical flat cable |
| CN212230110U (en) * | 2020-07-05 | 2020-12-25 | 重庆市鹤林电子材料有限公司 | Corrosion-resistant glass fiber wire harness device |
-
2021
- 2021-12-15 CN CN202111533544.0A patent/CN114156805B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1807062A (en) * | 2006-02-08 | 2006-07-26 | 扬中市星鑫工程管道厂 | Preparation method of modified ultrahigh molecular weight polyethylene powder direct extruded tubing |
| CN209766064U (en) * | 2019-06-13 | 2019-12-10 | 江苏宇航特种线缆有限公司 | Flexible cable with strong bending resistance |
| CN211719325U (en) * | 2020-03-22 | 2020-10-20 | 海悦电缆制造有限公司 | Parallel multi-strand control cable of symmetrical flat cable |
| CN212230110U (en) * | 2020-07-05 | 2020-12-25 | 重庆市鹤林电子材料有限公司 | Corrosion-resistant glass fiber wire harness device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114156805A (en) | 2022-03-08 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20240416 Address after: 523000 Hexi Industrial Zone, Jinxia village, Chang'an Town, Dongguan City, Guangdong Province Applicant after: DONGGUAN NEW NAM LEE ELECTRICAL Co.,Ltd. Country or region after: China Address before: 523000 Hexi Industrial Zone, Jinxia village, Chang'an Town, Dongguan City, Guangdong Province Applicant before: DONGGUAN NEW NAM LEE ELECTRICAL Co.,Ltd. Country or region before: China Applicant before: Guangxi Xinghui Electronic Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
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| GR01 | Patent grant |