CN201168844Y

CN201168844Y - Leadless ceramic tin furnace

Info

Publication number: CN201168844Y
Application number: CNU2008200914154U
Authority: CN
Inventors: 肖会斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-04
Filing date: 2008-01-04
Publication date: 2008-12-24
Anticipated expiration: 2018-01-04

Abstract

The utility model discloses a lead-free ceramic tin furnace, comprising a constant-temperature control system, a temperature sensor, a crucible and an electric heating component. The lead-free ceramic tin furnace is characterized in that the crucible is made of high-temperature resistant and erosion-resistant ceramic; the electric heating component is resistance wires which are arranged in the space in the left and the right walls and the bottom of the crucible or on a ceramic heating sleeve outside the left and the right walls and the bottom of the crucible. The outside of the crucible further can be provided with a furnace seat and a furnace-seat cover. The tin machine is used for the process for melting tin and welding electronic components. The solder machine has long useful time, low cost and high heating efficiency.

Description

Lead-free ceramics tin stove

Technical field

The utility model relates to a kind of stove that melts metal, especially a kind ofly melts behind the tin and the tin stove of soldering of electronic components.

Background technology

The tin stove of existing thawing tin and soldering of electronic components comprises thermostatic control system, temperature sensor, crucible and electric heating element, and wherein crucible is made with stainless steel or titanium, and electric heating element is the electrothermal tube that is contained in crucible inside.This tin stove melts tin and carries out the work of electronic component scolding tin though can be finished, but it is very strong to connect the compound corrosivity that is generated in the process of electronic component in the soldering with thawing, very fast meeting damages crucible in crucible, therefore has to change the crucible that is worth costliness.And, in the process of carrying out above-mentioned work, also can produce and contain lead steam, this is to being engaged in the workman of this work for a long time, can cause lead poisoning and seriously influences its health.

Summary of the invention

The purpose of this utility model is the defective that overcomes above-mentioned prior art, and a kind of lead steam that can not produce is provided, and the tin stove of thawing tin that pot life is long, cost is low, the efficiency of heating surface is high and soldering of electronic components.

The following technical scheme that adopts the designer to propose just can realize above-mentioned purpose: the tin stove of this programme is the same with prior art, comprise thermostatic control system, temperature sensor, crucible and electric heating element, its improvement is: said crucible is to be made by high temperature resistant, corrosion resistant pottery; Said electric heating element is arranged in the left and right sides wall of crucible and in the space in the bottom or be arranged on resistance wire during ceramic heating overlaps outside the left and right sides wall of crucible and the bottom.

Above the preferred cordierite ceramic of said high temperature resistant, corrosion resistant pottery.

Preferably, be provided with the space that can hold resistance wire in the wall of the left and right sides of crucible He in the bottom, said resistance wire promptly is arranged in this space.

Further, top said crucible is designed to the crucible of a rectangular box; The stove seat that also has a rectangular box, this stove seat be arranged on crucible around and below, and around stove seat and crucible and in the space of bottom, be filled with insulation material layer.

Again further, above on the end face of said crucible, around its inner chamber, be provided with a circle boss; Also have a stove flap, this stove flap is the rectangular box shape of a back-off, and the inwall around it is advisable with the top that is buckled in the stove seat just, is provided with a rectangular opening in the middle of it, and the size of this rectangular opening is advisable outward with the boss that is enclosed within just on the above-mentioned crucible end face.

The beneficial effects of the utility model are:

1, owing to the crucible of the utility model stove is made by high temperature resistant, corrosion resistant pottery, so in the work of melting tin and soldering of electronic components, can not produce lead steam, cause operator's lead poisoning, and this crucible was corrosion-resistant, extended to 3-7 service life from original 3-12 month;

2, because heater block changes resistance wire into by heating tube, so power can be increased to about 2500 watts from about 1000 watts, and this resistance wire can from the bottom of crucible and about two wall heat fused block tins, institute so that the efficiency of heating surface improve widely;

3, set up stove seat, stove flap and thermal insulation layer on the basis of the crucible in the utility model stove after, the crucible of operator and high temperature is isolated, and only may touch lower stove seat of temperature and stove flap, increased operator's security greatly.

The utility model is more clear to be understood with being convenient in order to make, and below by drawings and Examples it is described further.

Description of drawings

Fig. 1 (a) is the front elevational schematic of embodiment 1 of the present utility model.

Fig. 1 (b) is the vertical view of Fig. 1 (a).

Fig. 1 (c) is the left view of Fig. 1 (a).

Fig. 1 (d) is the B-B cutaway view of Fig. 1 (a).

Fig. 1 (e) is the A-A cutaway view of Fig. 1 (d).

Fig. 2 (a) is the front elevational schematic of embodiment 2 of the present utility model.

Fig. 2 (b) is the vertical view of Fig. 2 (a).

Fig. 2 (c) is the left view of Fig. 2 (a).

Fig. 2 (d) is the right view of Fig. 2 (a).

Fig. 2 (e) is the C-C cutaway view of Fig. 2 (b).

Fig. 3 is the cross-sectional schematic of embodiment 3 structures of the present utility model.

The specific embodiment

Embodiment 1, referring to Fig. 1 (a)-(e).Present embodiment comprises thermostatic control system, temperature sensor (not shown), crucible 1 and electric heating element.Wherein, electric heating element is a resistance wire 15, and this resistance wire 15 can be straight resistance wire or helically wound resistance wire.Crucible 1 is made by high temperature resistant, corrosion resistant pottery, and this pottery is preferentially selected cordierite ceramic for use.Be provided with the space 14 that can hold resistance wire in the wall of the left and right sides of crucible 1 He in the bottom, said resistance wire 15 promptly is arranged in this space.Certainly, said left and right sides wall should be selected the long sidewall of the length of side.

In position near left and right both sides on two sides on crucible 1 long limit and bottom, be respectively equipped with one and arrange the small through hole that can pass resistance wire, and except entering a hole 18 and wire vent hole 17, in remaining aperture, per two holes and and the scope that contained between common tangent of its outside in, a groove 19 is set in wall, the degree of depth of this groove 19 is slightly larger than the external diameter of resistance wire 15, the effect of this groove 19 is to wear around to adjacent another small through hole the time from a small through hole when resistance wire, and it can not given prominence to outside the sidewall of crucible.So, behind resistance wire and power connection, promptly can be from the wall of crucible 1 and the block tin the heating crucible of bottom, thus improve the efficient of melting tin.

Embodiment 2, referring to Fig. 2 (a)-(e).Present embodiment is on the basis of the foregoing description, crucible 1 is designed to the crucible of a rectangular box; The stove seat 7 that also has a rectangular box in addition, this stove seat 7 be arranged on crucible 1 around and below, and be filled with insulation material layer 9 around stove seat 7 and crucible 1 and in the space of bottom, heat-barrier material can adopt glass fibre or heat-preservation cotton or other insulation material [seeing Fig. 2 (e)].

In addition, on the end face of crucible 1, along its inner chamber around can also be provided with one the circle boss 11; And also has a stove flap 2, this stove flap 2 is the rectangular box shape of a back-off, inwall around it is advisable with the top that is buckled in stove seat 7 just, be provided with a rectangular opening in the middle of it, the size of this rectangular opening is to be enclosed within boss 11 outer being advisable on the above-mentioned crucible end face just, crucible can be cladded like this, only expose a circle boss 11, prevent that as far as possible the crucible of high temperature from scalding the people.Screw 8 is stationary furnace flap 2 usefulness among the figure.

Secondly, can also be provided with a groove 4 that is stored in the scaling powder that workpiece drips in the welding sequence at stove flap 2 near on operator's the side, this groove 4 is isometric with the long limit of stove flap 2, and the effect of this groove 4 is scaling powders that workpiece drips in the store operation, prevents that the stove seat from making dirty; Side on stove seat 7 long limits is provided with a rectangular channel box 5 that stores scruff, and this groove box 5 is isometric with the minor face of stove seat 7, and the effect of this groove box 5 is to store the stannic oxide layer that the surface of tin liquor of melting from crucible in operation scrapes off; Opposite side on stove seat 7 long limits is provided with a cover 3 that falls " U " shape, and power connection 9 is contained in the inside of this cover 3, and the effect of this cover 3 is to prevent from power connection 9 and electric wire are made dirty; 3-4 the leg 6 that can regulate height also is housed below stove seat 7, and this leg 6 can be regulated the level of stove.

Embodiment 3, referring to Fig. 3.Present embodiment is the embodiment of another heating: promptly crucible 1 the outside also have " U " shape crucible heating end cover 100 that high temperature resistant, a corrosion resistant pottery makes, should " U " shape crucible heating end cover 100 be contained in crucible the long side wall about and below, be provided with the space that holds resistance wire in its inner chamber, the resistance wire 15 of said heating usefulness is contained in this space.This mode can reach the purpose of this utility model too.

Claims

1, a kind of lead-free ceramics tin stove comprises thermostatic control system, temperature sensor, crucible and electric heating element, it is characterized in that: said crucible is made by high temperature resistant, corrosion resistant pottery; Said electric heating element is arranged in the left and right sides wall of crucible and in the space in the bottom or be arranged on the left and right sides wall of crucible and the ceramic heating outside the bottom resistance wire in overlapping.

2, lead-free ceramics tin stove according to claim 1 is characterized in that said high temperature resistant, corrosion resistant pottery is a cordierite ceramic.

3, lead-free ceramics tin stove according to claim 1 and 2 is characterized in that said resistance wire is straight resistance wire or helically wound resistance wire.

4, lead-free ceramics tin stove according to claim 3 is characterized in that being provided with the space that can hold resistance wire in the wall of the left and right sides of crucible He in the bottom, and said resistance wire promptly is arranged in this space.

5, lead-free ceramics tin stove according to claim 4 is characterized in that said crucible is the crucible of a rectangular box; The stove seat that also has a rectangular box, this stove seat be arranged on crucible around and below, and around crucible and in the space of bottom, be filled with insulation material layer.

6, lead-free ceramics tin stove according to claim 5 is characterized in that on the end face of said crucible, is provided with a boss around its inner chamber; Also have a stove flap, this stove flap is the rectangular box shape of a back-off, and the inwall around it is advisable with the top that is buckled in the stove seat just, is provided with a rectangular opening in the middle of it, and the size of this rectangular opening is advisable outward with the boss that is enclosed within just on the above-mentioned crucible end face.

7, lead-free ceramics tin stove according to claim 6 is characterized in that also being provided with a groove that is stored in the scaling powder that workpiece drips in the welding sequence at the stove flap near on operator's the side, and the long limit of this groove and stove flap is isometric; Side on the long limit of stove seat is provided with a rectangular channel box that stores scruff, and the minor face of this groove box and stove seat is isometric; Opposite side on the long limit of stove seat is provided with a cover that falls " U " shape, and power connection is contained in the inside of this cover; 3-4 the leg that can regulate height also is housed below the stove seat.

8, lead-free ceramics tin stove according to claim 7, it is characterized in that in position near left and right both sides on two sides on the long limit of crucible and bottom, be respectively equipped with one and arrange the small through hole that can pass resistance wire, and except entering a hole and wire vent hole, in remaining aperture, per two holes and and the scope that contained between common tangent of its outside in, a groove is set in wall, the degree of depth of this groove is slightly larger than the external diameter of resistance wire.

9, lead-free ceramics tin stove according to claim 3, it is characterized in that " U " shape crucible heating end cover that high temperature resistant, corrosion resistant pottery is made in addition, should " U " shape crucible heating end be sleeved on crucible the long side wall about and below, be provided with the space that holds resistance wire in its inner chamber, the resistance wire of said heating usefulness is contained in this space.