CN87207195U - Spiral tube style heater for nozzle of hot cuttent foundry moulding - Google Patents
Spiral tube style heater for nozzle of hot cuttent foundry moulding Download PDFInfo
- Publication number
- CN87207195U CN87207195U CN 87207195 CN87207195U CN87207195U CN 87207195 U CN87207195 U CN 87207195U CN 87207195 CN87207195 CN 87207195 CN 87207195 U CN87207195 U CN 87207195U CN 87207195 U CN87207195 U CN 87207195U
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- CN
- China
- Prior art keywords
- tube
- stainless steel
- electroghermal
- nozzle
- thermocouple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an improved spiral tube type heater for a nozzle of a hot runner mold. The heater is wound by a prefabricated stainless steel electroghermal tube (shortened for the electroghermal tube hereinafter), wherein, two to eight electroghermal wires of which the electrical resistivity is smaller or equal to 3 Omega mm <2>/m are sheathed in a stainless steel tube. The electroghermal tube can form a square shape, a polygonal shape or a circular shape, and the area of the cross section of rge electroghermal tube is 4-25 square millimeters. The spiral tube type heater wound by the electroghermal tube has the advantages of low cost, easy fabrication, good heat conduction effect, little heat loss and repeated use for a thermocouple. The utility model can be widely used for heating the nozzle of the hot runner mold.
Description
The utility model relates to a kind of improved spirality tubular type heater, and it is that a kind of hot runner mould nozzle heating of thermoplastic monotype chamber or free-standing direct current difference Nozzle for Mould with Hot Flow Channel of can being applicable to heats especially.Be to adapt to the hot runner mould nozzle heating of different size, its operating voltage is divided into three kinds of 110V, 220V and 380V, and heating power can be selected for use arbitrarily within 200～1500W.
Injection-moulding plastic in the past all adopts the mould of cold runner structure.In order to economize in raw materials, enhance productivity, cut down the consumption of energy, improve quality of item, simplify goods postprocessing working procedures and labor savings etc., in recent years abroad large-scale popularization use the hot runner injection molding technology, the appropriate design of hot runner mould nozzle heater and make and become the problem that everybody is concerned about most wherein.
The hot runner mould nozzle of West Germany HASCO company and U.S. D-M-E company is with spirality tubular type heater, by resistance coefficient 〉=3mm
2Two heating wire and a pair of thermocouple of/m, isolation armouring by insulating materials is in the external diameter of garden shape is 3～4 millimeters stainless steel tube, the thermocouple body contact is in its interior end points, operating voltage is 110V and 220V Three Estate, heating power is 200～1000W, wherein the small product size of West Germany HASCO company is less, but adopts the heat conductor of expensive hard beallon as nozzle body; The product of U.S. D-M-E company, the temperature thermocouple body contact is on the interior end points of stainless steel tube, the interior garden of spirality tubular type heater becomes " wire " to contact with the outer garden of nozzle body, heat-conducting effect is poor, when thermoelectricity occasionally heating wire either party damage, heater must be scrapped, and owing to adopt the heating wire of high resistivity, price is very expensive.
The purpose of this utility model provides a kind of whole employing home made materials, low-resistance coefficient, heat transfer and is " planar " contact, heating spirality tubular type heater effective, that low-cost, And and one group of thermoelectricity occasionally are easy to change after the heating wire one side damage.
The utility model is finished as follows: at an internal diameter is in the stainless steel tube of 4～25 mm sqs, 2～8 resistance coefficients of armouring≤3 Ω mm
2The heating wire of/m, the armouring insulating materials makes its mutually insulated between the heating wire, each contact is welded between heating wire and heating wire, heating wire and the lead-out wire, stainless steel tube is with square compo pipe drawing-die, draw repeatedly and become required cross section and size, the required length of intercepting after annealing, give system stainless steel electrothermal tube.Give the end welding of the stainless steel electrothermal tube of system and go up thermocouple by the dress pole; for the usefulness that thermocouple is installed; the other end then from lead wire partly be inserted in stainless steel lead wire protective casing And with give the system electrothermal tube integrally welded; insert heatproof insulant And and coat the heatproof waterproof gasket cement in the exit portion of heatproof insulant in the lead wire protective casing, the stainless steel electrothermal tube of giving system then turns to the helical tubular heater by the certain size requirement.The shape of giving system stainless steel electrothermal tube can be square or polygon, selects for use the radical of heating wire, the size of resistivity value to depend on the length of the operating voltage of electrothermal tube, heating power and heating wire.
The invention has the advantages that and to use the heating wire that replaces high resistivity than the heating wire of low-resistance coefficient, both reduced production cost, make domestic material again.Adopt spirality tubular type heater square or that polygon gives the coiling of system stainless steel electrothermal tube, it becomes " planar " to contact with the outer garden of hot runner mould nozzle body, has improved heat-transfer effect.Thermometric with thermocouple closely insert the electrothermal tube end points by in the dress pole, after electrothermal tube damaged, thermocouple can be pulled down repeated use, has overcome the shortcoming that original thermocouple is scrapped thereupon.
Fig. 1 is the unfolding assumption diagram of the system of the giving stainless steel electrothermal tube of vertical expansion of the present utility model.Wherein heating wire 1 in a square stainless steel tube 2 as protection and heat transfer usefulness, is used insulating materials 3 tight armourings by armouring all around, makes its mutually insulated.Joint pad 4 between heating wire and the heating wire, the cross section of stainless steel tube 2 are square, and one electroheat pair of end points dress weldering is by dress pole 6, for the usefulness by the dress thermocouple.Be with lead wire protective casing 5 on the lead wire of the stainless steel other end, lead wire 9 and protective casing 5 interfaces scribble heatproof waterproof gasket cement 7, and lead wire 9 is a heat-resistant silicon rubber lead, and its surface is with the woven wire housing.
The stainless steel electrothermal tube that gives system turns to hot runner mould nozzle spirality tubular type heater by Fig. 2 structure, and wherein 1 is heating wire, and the 2nd, square stainless steel tube; the 5th, the lead wire protective casing; the 7th, heatproof waterproof gasket cement, the 8th, woven wire housing, the 9th, lead wire.
Fig. 3 is the hot runner mould nozzle arrangements figure that spirality tubular type heater is housed.Wherein 2 is square stainless steel tubes, the 10th, and nozzle, the 11st, hot flow path, the 12nd, nozzle body, the 13rd, protective cover, the outer garden of nozzle body 12 contacts with the square stainless steel tube 2 one-tenth " planar " of spirality tubular type heater, helps improving heat-transfer effect.
Spirality tubular type heater can be widely used in the hot flow path heating of monotype chamber and free-standing direct current difference hot runner mould.Fig. 4 is the structure chart that spirality tubular type heater is used at monotype chamber hot runner mould.Wherein 11 is hot flow paths, the 14th, and plastic products, the 15th, injector nozzle, the 16th, centring ring, the 17th, hot runner mould nozzle, the 18th, mold cools down water pipe, the 19th, solid plate, the 20th, moving platen.
The structure chart that Fig. 5 uses on free-standing hot runner mould for spirality tubular type heater.Wherein 11 is hot flow paths, the 17th, and hot runner mould nozzle, the 21st, insulation centring ring, the 22nd, mold cools down water pipe, the 23rd, runner distributor electrothermal tube, the 24th, runner distributor, the 25th, thermocouple, the 26th, cushion block.
Claims (1)
1, a kind of hot runner mould nozzle is that stainless steel electrothermal tube coiling by the system of giving forms with spirality tubular type heater, gives in the stainless steel electrothermal tube of system and adorns two resistance coefficients 〉=3 Ω mm
2The heating wire of/m and a pair of thermocouple, the isolation by insulating materials makes its mutually insulated, and the thermocouple body contact is characterized in that in its end points:
(1) resistance coefficient of heating wire≤3 Ω mm
2/ m,
(2) cross section of stainless steel tube is square or polygon, and interior cross section is at 4～25 mm sqs,
(3) the outer end spot welding of stainless steel tube is connected to thermocouple by the dress pole,
(4) radical of heating wire is 2～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207195 CN87207195U (en) | 1987-06-16 | 1987-06-16 | Spiral tube style heater for nozzle of hot cuttent foundry moulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207195 CN87207195U (en) | 1987-06-16 | 1987-06-16 | Spiral tube style heater for nozzle of hot cuttent foundry moulding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207195U true CN87207195U (en) | 1988-05-11 |
Family
ID=4822659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207195 Withdrawn CN87207195U (en) | 1987-06-16 | 1987-06-16 | Spiral tube style heater for nozzle of hot cuttent foundry moulding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207195U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615134A (en) * | 2012-04-01 | 2012-08-01 | 江苏格林威尔金属材料科技有限公司 | Spiral heating device of extruding die |
| CN106982483A (en) * | 2017-03-01 | 2017-07-25 | 刘旭玲 | A kind of sleeve set screw type electric heating pipe device |
| CN107182138A (en) * | 2017-04-29 | 2017-09-19 | 冼远程 | A kind of electric heater unit of strong applicability |
-
1987
- 1987-06-16 CN CN 87207195 patent/CN87207195U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615134A (en) * | 2012-04-01 | 2012-08-01 | 江苏格林威尔金属材料科技有限公司 | Spiral heating device of extruding die |
| CN106982483A (en) * | 2017-03-01 | 2017-07-25 | 刘旭玲 | A kind of sleeve set screw type electric heating pipe device |
| CN106982483B (en) * | 2017-03-01 | 2020-10-09 | 于浩 | Sleeve sleeved spiral electric heating tube device |
| CN107182138A (en) * | 2017-04-29 | 2017-09-19 | 冼远程 | A kind of electric heater unit of strong applicability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |