CN1285708A - Method for making electric-heating tube - Google Patents
Method for making electric-heating tube Download PDFInfo
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- CN1285708A CN1285708A CN 99117033 CN99117033A CN1285708A CN 1285708 A CN1285708 A CN 1285708A CN 99117033 CN99117033 CN 99117033 CN 99117033 A CN99117033 A CN 99117033A CN 1285708 A CN1285708 A CN 1285708A
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Abstract
The production method of electric heating tube includes the following steps: fixing the lower-end metal guide rod in its lower-end tube mouth by means of plastics, sealing said tube mouth, filling the metal tube with insulating powder from upper tube mouth, fixing the upper-end metal guide rod in it supper-end tube mouth, sealing said tube mouth, reducing both tube mouths, intensifying insulating powder density, fixing the metal guide rods and making it into required form. Said invention is easy to operate, simple and accurate in filling powder and not easy to damaged in the course of bending-forming treatment.
Description
The present invention relates to a kind of manufacture method of electrothermal tube.
The manufacture method of existing electrothermal tube, mainly be to adopt two ends to be had the heating wire that metal draws rod to be placed in the metal tube, pouring into insulating powder in metal tube, the metal at two ends draws and puts porcelain tube on the rod, insulating powder is fixed in the metal tube, forms the electric heating straight tube.Because porcelain tube is hard and crisp, be fixed in the two ends mouth of pipe on the metal tube, if fit dimension is tight, the not only processing request height of porcelain tube and metal tube, and assembling difficulty if fit dimension send, comes off easily.If the extrusion metal pipe mouth of pipe, the porcelain tube in the metal tube of crushing easily spills the insulating powder in the metal tube, produces substandard products even waste product easily.In case porcelain tube is fixed in the mouth of pipe of metal tube, if find resistance wire or insulating powder in the metal tube problem is arranged, be not easy to unload porcelain tube again, the resistance wire that takes out in the metal tube assembles again.And the electric heating straight tube is in bending and pressing process because the distortion of metal tube or and bending mould or compacting tool set between putting position forbidden, being easy to crush is arranged on the porcelain tube at metal tube two ends, causes waste product.Exist porcelain tube and metal at the two ends of metal tube and draw gap, two places between rod and porcelain tube and the metal tube, and the gap is little, is unfavorable for being coated with the envelope fluid sealant.
The object of the present invention is to provide a kind of insulating powder to pour into processing ease, metal tube mouth of pipe encapsulation closely, leakiness powder not, the manufacture method of the electrothermal tube that the bending forming qualification rate is high.
For realizing purpose of the present invention, the manufacture method of described electrothermal tube can be operated according to following steps:
A, select wire-wound resistor silk 5 for use, draw rod 1, put into metal tube 4 at its two ends weld metal, making the metal of lower end draw rod 1 is fixed in the lower end mouth of pipe of metal tube 4, and fix with plastics, and seal the lower end mouth of pipe, retention wire is around the center seat of resistance wire 5 at metal tube 4;
B, the upper orifice of insulating powder 3 from metal tube 4 poured into until filling;
C, with plastics the upper end metal is drawn rod and 1 be fixed in the upper end mouth of pipe of metal tube 4, and seal the upper end mouth of pipe, form sealing electric heating straight tube;
D, the two ends mouth of pipe of sealing electric heating straight tube two ends metal tube 4 is dwindled, allow insulating powder 3 density wherein strengthen, it is fixing that metal is drawn rod 1, is bent into required form then, strikes out required cross sectional shape again.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the structure cutaway view of electric heating straight tube.
Fig. 2 is stamped into the topology view of taper for the two ends of electric heating straight tube among Fig. 1.
Fig. 3 curves the topology view of " C " shape for the electric heating straight tube of Fig. 2.
Fig. 4 is the C among Fig. 3 " shape strikes out the cross section and is the topology view of inscribing shape.
Below in conjunction with accompanying drawing, one of them embodiment of manufacture method of electrothermal tube of the present invention is described in further detail:
As shown in fig. 1, select for use round wire around resistance wire 5, respectively weld a circular metal at its two ends and draw rod 1, it is identical with the internal diameter of wire-wound resistor silk 5 that metal draws excellent 1 diameter.Draw rod 1 resistance wire 5 and put into metal tube 4 being welded with metal, metal tube adopts circular copper pipe or aluminum pipe.Draw the cylindric plastics micelle 2 that rod is established the hole in the middle of putting on 1 at the lower end metal, plastics micelle 2 is jammed in the lower port of metal tube 4, make the metal of lower end draw rod 1 and be fixed in the lower end mouth of pipe of metal tube 4, and seal the lower end mouth of pipe.The upper orifice of insulating powder 3 from metal tube 4 poured into until filling, and insulating powder 3 adopts magnesia powder.Concrete operations can be enclosed within metal tube 4 earlier on the guiding tube of magnesia powder, with the lower end that rod 1 is fixed on guiding tube of drawing on the wire-wound resistor silk 5, again that metal tube 4 is past drop-down along guiding tube, making its lower port snap in the lower end metal draws on rod 1 the plastics micelle 2, in case have magnesia powder to spill in the guiding tube, just can enter in the metal tube directly and accurately.When pouring into magnesia powder,, magnesia powder is closely poured in the metal tube along guiding tube on one side can vibrate metal tube 4.After magnesia powder is filled, draw the cylindric plastics micelle 2 that rod is established the hole in the middle of also putting on 1 at described upper end metal, plastics micelle 2 is jammed in the upper port of metal tube 4, make the upper end metal draw rod 1 and be fixed on metal tube 4 pipes 4 pipe 4 or semicircle shape cross sections, be convenient to that the magnesia powder at two ends still keeps fine and close state with 42 of container bottom welded pipes, can not spill., prevent that airborne moisture from entering magnesia powder, cause the insulation property variation in punching press bending process, the fragile rod in two ends its, tube cell is fixed it with rod, and pipe makes powder rod fixing again, the processing taper, as shown in Figure 2.The two ends mouth of pipe of the metal tube 4 of sealing electric heating straight tube is dwindled step by step.At this moment, the plastics micelle in the metal tube two ends is by progressively compression, and insulating powder is then compressed by densification, even remove the plastics micelle, the insulating powder at metal tube two ends can not scatter yet and spill, and like this, metal draws rod and then is insulated the two ends that powder is fixed on metal tube firmly.To seal the electric heating straight tube then and be placed on and be bent into required form on the bar folder, be placed on again in the diel of forcing press, strike out required trapezoid cross section shape as shown in Fig. 3 and 4, be convenient to and the container bottom welding, also can be processed into semicircle shape cross section shape.Become metal tube 4 two ends of taper to prescind the part that wraps plastics micelle 2 respectively the mouth of pipe, can make the metal tube two ends after the moulding neat, and the magnesia powder at two ends still keeps fine and close state, can not spill.Seal up fluid sealant at two ends again, prevent that airborne moisture from entering magnesia powder, causes the insulation property variation.
The present invention has sealing operation and the post processing handling ease of metal tube, and powder filling is accurately simple, and bending forming is difficult for The advantage of damaging.
Claims (5)
1. the manufacture method of an electrothermal tube is characterized in that:
A, select wire-wound resistor silk (5) for use, draw rod (1) at its two ends weld metal, put into metal tube (4), the metal of lower end is drawn in the lower end mouth of pipe that rod (1) is fixed on metal tube (4), and fix with plastics, and seal the lower end mouth of pipe, retention wire is around the center seat of resistance wire (5) at metal tube (4);
B, the upper orifice of insulating powder (3) from metal tube (4) poured into until filling;
C, the upper end metal is drawn in the upper end mouth of pipe that rod (1) is fixed on metal tube (4), and seal the upper end mouth of pipe, form sealing electric heating straight tube with plastics;
D, the two ends mouth of pipe of sealing electric heating straight tube two ends metal tubes (4) is dwindled, allow insulating powder (3) density wherein strengthen, it is fixing that metal is drawn rod (1), is bent into required form then, strikes out required cross sectional shape again.
2. the manufacture method of electrothermal tube according to claim 1 is characterized in that:
Draw the plastics micelle (2) of establishing the hole in the middle of putting on the rod (1) at described lower end metal, plastics micelle (2) is jammed fixing in the lower port of metal tube (4).
3. the manufacture method of electrothermal tube according to claim 1 and 2 is characterized in that:
Draw the plastics micelle (2) of establishing the hole in the middle of putting on the rod (1) at described upper end metal, plastics micelle (2) is jammed fixing in the upper port of metal tube (4).
4. the manufacture method of electrothermal tube according to claim 3 is characterized in that:
Make the two ends mouth of pipe of sealing electric heating straight tube two ends metal tubes (4) strike out taper gradually.
5. the manufacture method of electrothermal tube according to claim 4 is characterized in that:
Become metal tube (4) two ends of taper to prescind the part that wraps plastics micelle (2) respectively the mouth of pipe, seal up fluid sealant at two ends again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117033 CN1285708A (en) | 1999-08-18 | 1999-08-18 | Method for making electric-heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117033 CN1285708A (en) | 1999-08-18 | 1999-08-18 | Method for making electric-heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1285708A true CN1285708A (en) | 2001-02-28 |
Family
ID=5279681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117033 Pending CN1285708A (en) | 1999-08-18 | 1999-08-18 | Method for making electric-heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1285708A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916989A (en) * | 2014-03-12 | 2014-07-09 | 无为虹波电器有限公司 | Heating wire winding process of electric heating tube |
| CN104333924A (en) * | 2014-10-17 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | High-performance heating aluminum tube |
| CN104640255A (en) * | 2014-12-15 | 2015-05-20 | 芜湖恒美电热器具有限公司 | Manufacturing method of electric heating tubes of water heaters |
| CN107172729A (en) * | 2017-06-08 | 2017-09-15 | 张猛 | A kind of metal tube and a kind of electrothermal tube and its manufacture method for being used to manufacture electrothermal tube |
| CN109500769A (en) * | 2018-12-04 | 2019-03-22 | 安徽苏立科技股份有限公司 | Heat-generating pipe draws the pneumatic Suresh Kumar of stick and wears micelle tooling |
-
1999
- 1999-08-18 CN CN 99117033 patent/CN1285708A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916989A (en) * | 2014-03-12 | 2014-07-09 | 无为虹波电器有限公司 | Heating wire winding process of electric heating tube |
| CN104333924A (en) * | 2014-10-17 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | High-performance heating aluminum tube |
| CN104640255A (en) * | 2014-12-15 | 2015-05-20 | 芜湖恒美电热器具有限公司 | Manufacturing method of electric heating tubes of water heaters |
| CN107172729A (en) * | 2017-06-08 | 2017-09-15 | 张猛 | A kind of metal tube and a kind of electrothermal tube and its manufacture method for being used to manufacture electrothermal tube |
| CN109500769A (en) * | 2018-12-04 | 2019-03-22 | 安徽苏立科技股份有限公司 | Heat-generating pipe draws the pneumatic Suresh Kumar of stick and wears micelle tooling |
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| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |