CN201440099U

CN201440099U - Runner temperature measuring device

Info

Publication number: CN201440099U
Application number: CN2009201639407U
Authority: CN
Inventors: 李昇达
Original assignee: MOLDMAX TECHNOLOGY CORP
Current assignee: MOLDMAX TECHNOLOGY CORP
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-04-21
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to a runner temperature measuring device which comprises a heated hollow shaft, a heat transfer sleeve and a temperature sensing line, wherein the heat transfer sleeve is provided with a perforated shaft hole; one end of the heated hollow shaft is arranged on the shaft hole in a penetrated mode; the heat transfer sleeve coats and integrates with the heated hollow shaft; a positioning groove is arranged on the heat transfer sleeve; the positioning groove is inlaid in a heating coil; the heating coil heats the heat transfer sleeve, and then the heat transfer sleeve heats the heated hollow shaft; the heat transfer sleeve is provided with a guide hole; one end of the temperature sensing line is provided with a contact piece and a closed part; the contact piece enters the hole, is propped against and penetrates into the heated hollow shaft in the heat transfer sleeve, so as to sense the temperatures of the heat transfer sleeve and the heated hollow shaft, and the closed part and the hole are fixedly locked to prevent the contact piece from getting out of the hole. The contact piece is not over extruded and damaged, so the measuring sensitivity and the service life can be ensured for a long time.

Description

The runner temperature measuring equipment

Technical field

The utility model relates to a kind of runner temperature measuring equipment, relates in particular to a kind of temp.-sensing wire serviceable life of improving, and reduce temp.-sensing wire and damage, and runner temperature measuring equipment that can the stably measured temperature.

Background technology

Hot runner is common in mould industry and the plastics industry, its role is to provide the soak environment, allows after the plastics plasticizing, makes it the flowable plastic material, can continue to remain under the state of high temperature, in order to flowing.The hot runner function is that the glue that melts that nozzle is emitted is passed in the die cavity, so quality of hot runner quality, can directly influence outward appearance, dimensional accuracy and the forming period of whole plastics rerum natura, product, so research and development and improvement to hot runner are arranged in the related industry more.

Existing hot runner sees also the TaiWan, China patent application case number No. 96214004, " heating arrangement of hot runner ", it is a kind of heating arrangement of hot runner, mainly be provided with a hot runner body, the bottom of this hot runner body is made as the body axle center, outside wall surface in the body axle center is provided with spiral helicine electric heating groove and temperature-sensitive groove, on the electric heating groove, reel and be bumped into heater coil, in the temperature-sensitive groove, then reel and be bumped into temp.-sensing wire, make heater coil and temp.-sensing wire and body shaft hearty cord integrator; By heater coil and temp.-sensing wire and body shaft hearty cord integrator, when the heater coil rising-heat contracting-cold, still be positioned at the electric heating groove of body axle center outside wall surface, can not break away from body shaft and be formed centrally the gap, it is splendid that it adds thermal effect, so can effectively solve the shortcoming that adds temperature gap that existing heater coil and body shaft are produced in the heart, reach adding thermal effect and increasing electric heating serviceable life of maximum heating area and best power saving, samming, its temp.-sensing wire is temperature-sensitive accurately, reaches the effect of accurately stable control temperature; As shown in Figure 5, it is to be the existing hot runner of this kind cross section view clearly.

Yet, though the existing hot runner of this kind can provide the effect of even heating and sensing temperature, but as shown in Figure 5, its temp.-sensing wire 91 1 ends stretch in the copper sheathing 92, and be affixed on copper sheathing 92 inwalls, measure the temperature in copper sheathing 92 and body axle center 93 simultaneously though so can utilize temp.-sensing wire 91, to judge whether copper sheathing 92 evenly is passed to body axle center 93 with heat, and whether both temperature are excessive etc., but because this temp.-sensing wire 91 is affixed on copper sheathing 92 inwalls, thereby in copper sheathing 92 is inserted in body axle center 93 time, temp.-sensing wire 91 is subjected to the compressing in body axle center 93 easily and damages, and the effect of its measurement temperature that detracts, moreover temp.-sensing wire 91 is under the situation of often being oppressed, also deform gradually easily and make the sensing area change, or situation of short circuit, cause the effect of measuring temperature incorrect, or do not detect temperature at all, cause the mistake in operator's interpretation, therefore its poor practicability is necessary to be researched and developed and can prevents that temp.-sensing wire 91 from being oppressed, and hot runner structure that can the stably measured temperature.

The utility model content

Technical problem underlying to be solved in the utility model is, overcomes the above-mentioned defective that prior art exists, and a kind of runner temperature measuring equipment is provided, and contact element can not damaged, so but sensitivity in the Chang Baoqi measurement and serviceable life by excessive compression.

For reaching aforesaid creation purpose, the utility model comprises the tubular shaft spare that is heated, a heat conduction cover, reaches a temp.-sensing wire, wherein:

These heat conduction cover central authorities offer the axis hole of a penetration state, and be equipped with a locating slot on the outer diametric plane, this locating slot is that inlay card enters this locating slot internal fixation for an aspect and a heater coil that curls up shaping along heat conduction cover outside wall surface, produce electric heating by this heater coil, so that the heat conduction cover is subjected to the heat effect of heater coil;

This tubular shaft spare one end that is heated is the bigger contact carrier of diameter, the other end is the less main heating section of diameter, the diameter of this heating section is little than carrier, and the diameter of carrier is big than the axis hole of heat conduction cover, this heating section can penetrate in the axis hole of heat conduction cover whereby, and overlap the end by carrier and heat conduction and replace the location, relative position with the relative heat conduction cover of the tubular shaft spare that fixedly is heated, and make the heat conduction cover present the kenel that the heating section of the tubular shaft spare that is heated is coated combination whereby, thereby after the heat conduction cover was subjected to heater coil heating, again heat transferred the is heated heating section of tubular shaft spare of the cover of heat conduction thereafter absorbed;

This heat conduction puts and offers a guide hole, and this temp.-sensing wire one end is provided with a contact element and a closure member, this contact element can enter in the guide hole and be butted on the heating section that penetrates the tubular shaft spare that is heated in the heat conduction cover, temperature with the sensing heat conduction cover and the tubular shaft spare that is heated, and by the locking of this closure member and guide hole to prevent that contact element from emerging in outside the guide hole, and the axial vane surface of this contact element end is to be differential of the arc convex, with the contact kenel of cooperation contact element with the tubular shaft spare that is heated;

This heat conduction cover outer wall is provided with positioning piece, this keeper is established by fixture lock and is incorporated into heat conduction and puts, this keeper one end is provided with an arc ring, this arc ring be cooperate the heat conduction cover with the line body clamping of temp.-sensing wire in arc ring and heat conduction inner room, with the fixing position of temp.-sensing wire;

The utility model puts the guide hole of being offered by heat conduction, and the contact element that makes the temp.-sensing wire end can enter in the guide hole to contact with the tubular shaft spare that is heated and replaces, with the be heated temperature of tubular shaft spare and heat conduction cover of measurement, and the operator also can operate the packing degree that closure member is adjusted contact element and heating section, contact element can not damaged, so but sensitivity in the Chang Baoqi measurement and serviceable life by excessive compression.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the perspective exploded view of each parts of the utility model runner temperature measuring equipment.

Fig. 2 is the three-dimensional appearance synoptic diagram of the utility model runner temperature measuring equipment.

Fig. 3 is the utility model runner temperature measuring equipment cross-sectional schematic.

Fig. 4 is that cross-sectional schematic is amplified in the part of the utility model runner temperature measuring equipment.

Fig. 5 is the cross-sectional schematic of existing hot runner structure.

The number in the figure explanation:

The utility model:

1 tubular shaft spare 11 heating sections 12 carriers that are heated

21 axis holes, 22 locating slots are overlapped in 2 heat conduction

23 heater coils, 24 guide holes, 25 keepers

251 fixtures, 252 arc rings, 3 temp.-sensing wires

31 contact elements, 32 closure members

Existing:

91 temp.-sensing wires, 92 copper sheathings, 93 body axle center

Embodiment

See also Fig. 1 to shown in Figure 2, preferred embodiment of the present utility model comprises the tubular shaft spare 1 that is heated, heat conduction cover 2, reaches a temp.-sensing wire 3, wherein:

It is 2 cylindrical that this heat conduction is overlapped, its central authorities offer the axis hole 21 of a penetration state, and be equipped with a locating slot 22 on the outer diametric plane, as shown in Figure 1, this locating slot 22 is for to overlap the aspect that 2 outside wall surface are curled up shaping along heat conduction, and it is comparatively concentrated that the locating slot 22 of 2 outer radius portion positions is overlapped in heat conduction, part is comparatively disperseed, and a heater coil 23 inlay cards enter this locating slot 22 internal fixation, produce electric heating by this heater coil 23, (how this heater coil 23 produces electric heating so that heat conduction cover 2 is subjected to the heat effect of heater coil 23, and how the tubular shaft spare 1 that is heated is subjected to the effect of heat conduction cover 2 heating to belong to prior art, the purpose of this utility model be existing structure shown in Figure 5 with temp.-sensing wire 91 folder under the pressure of 93 in copper sheathing 92 and body axle center, and cause shortcomings such as temp.-sensing wire 91 is impaired easily, so repeat no more beyond the utility model) about how producing principle parts such as electric heating or heating of plastic;

This tubular shaft spare 1 that is heated is provided with a main heating section 11 and a contact carrier 12, the diameter of this heating section 11 is little than carrier 12, and the diameter of carrier 12 is big than the axis hole 21 of heat conduction cover 2, this heating section 11 can penetrate in the axis hole 21 of heat conduction cover 2 whereby, and overlap 2 ends by carrier 12 and heat conduction and replace the location, relative position with the tubular shaft spare 1 relative heat conduction cover 2 that fixedly is heated, and make heat conduction cover 2 present the kenel that the heating section 11 of the tubular shaft spare 1 that is heated is coated combination whereby, thereby after heat conduction cover 2 was subjected to heater coil 23 heating, the heating sections 11 that the cover of heat conduction thereafter 2 gives heat transferred the tubular shaft spare 1 that is heated again absorbed;

Offer a guide hole 24 on this heat conduction cover 2, these guide hole 24 inwalls have screw thread, and these temp.-sensing wire 3 one ends are provided with the helicoid closure member 32 of a contact element 31 and an outside, this contact element 31 is can enter in the guide hole 24 and be butted on the heating section 11 that penetrates the tubular shaft spare 1 that is heated in the heat conduction cover 2, temperature with the sensing heat conduction cover 2 and the tubular shaft spare 1 that is heated, and by this closure member 32 and guide hole 24 lockings to prevent that contact element 31 from emerging in outside the guide hole 24, and the axial vane surface of these contact element 31 ends is differential of the arc convex, with the contact kenel of cooperation contact element 31 with the tubular shaft spare 1 that is heated;

As shown in Figures 3 and 4, this contact element 31 enters in the guide hole 24 and heating section 11 outer side contacts, and because heating section 11 is rounded, therefore contact element 31 ends are differential of the arc convex and just can replace with radially contacting of heating section 11, measure the temperature of heating section 11 to make temp.-sensing wire 3, and the operator also can operate the packing degree that closure member 32 is adjusted contact element 31 and heating section 11, and contact element 31 can not damaged by excessive compression, so but sensitivity in the Chang Baoqi measurement and serviceable life:

In addition, as shown in Figure 1, this heat conduction is overlapped 2 outer walls and is provided with positioning piece 25, this keeper 25 is established by a fixture 251 locks and is incorporated on the heat conduction cover 2, these keeper 25 1 ends are provided with an arc ring 252, and this arc ring 252 cooperates heat conduction cover 2 that the line body clamping of temp.-sensing wire 3 is overlapped 2 in arc ring 252 and heat conduction, with the fixing position of temp.-sensing wire 3, make temp.-sensing wire 3 can not have institute and rely on and suffer external force or his object to pull damage easily, or the situation that is short-circuited.

By above-mentioned structure kenel narration of the present utility model, the utility model mainly offers guide hole 24 on heat conduction cover 2 as can be known, and one contact element 31 is set in temp.-sensing wire 3 one ends, utilizing contact element 31 to enter guide hole 24 interior contacts with the tubular shaft spare 1 that is heated replaces, with the be heated temperature of tubular shaft spare 1 and heat conduction cover 2 of measurement, and prevent temp.-sensing wire 3 from being oppressed and damage, and the user also can adjust the packing degree of the contact element 31 and the tubular shaft spare 1 that is heated via closure member 32, make temp.-sensing wire 3 more difficult being damaged, surely not produce to measure and go up insensitive or the damage situation of short circuit.

Claims

1. a runner temperature measuring equipment is characterized in that, comprise the tubular shaft spare that is heated, a heat conduction cover, reach a temp.-sensing wire, wherein:

This heat conduction is arranged with the axis hole of a penetration state, this tubular shaft spare one end that is heated wears in axis hole, the heat conduction cover tubular shaft spare that will be heated coats combination, this heat conduction puts and is equipped with a locating slot, this locating slot embeds a heater coil, this heater coil heating heat conduction cover heats the tubular shaft spare that is heated by the heat conduction cover again;

This heat conduction puts and offers a guide hole, this temp.-sensing wire one end is provided with a contact element and a closure member, this contact element enters in the guide hole and is butted on the tubular shaft spare that is heated that penetrates in the heat conduction cover, with the temperature of the sensing heat conduction cover and the tubular shaft spare that is heated, and lock with guide hole by this closure member and to prevent that contact element from emerging in outside the guide hole.

2. runner temperature measuring equipment according to claim 1, it is characterized in that: described heat conduction cover outer wall is provided with positioning piece, this keeper one end is provided with an arc ring, this arc ring cooperate heat conduction cover with the line body clamping of temp.-sensing wire in arc ring and heat conduction inner room, with the fixing position of temp.-sensing wire.

3. runner temperature measuring equipment according to claim 1, it is characterized in that: the described tubular shaft spare two ends that are heated are respectively equipped with a heating section and a carrier, the diameter of this heating section is little than carrier, and the diameter of carrier is big than axis hole, this heating section penetrates in the axis hole of heat conduction cover, and the location is replaced in carrier and heat conduction cover end, with the relative position of the relative heat conduction cover of the tubular shaft spare that fixedly is heated.

4. runner temperature measuring equipment according to claim 1 is characterized in that: the axial vane surface of described contact element end is to be differential of the arc convex, with the contact kenel of cooperation contact element with the tubular shaft spare that is heated.