CN2445847Y

CN2445847Y - Tin furnace appts.

Info

Publication number: CN2445847Y
Application number: CN 00235615
Authority: CN
Inventors: 王赐斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-05
Filing date: 2000-06-05
Publication date: 2001-09-05
Anticipated expiration: 2010-06-05

Abstract

The utility model relates to a tin furnace device. The inner of a tin flow chamber of the tin furnace is additionally provided with a slow flow device which is arranged between a liquid tin inlet and a liquid tin outlet of the tin flow chamber, and the slow flow device is provided with an outflow opening communicated with the liquid tin outlet of the tin flow chamber and at least one inflow opening. The slow flow device can achieve the function of decreasing the flow capacity of the liquid tin by means of the small-bore inflow opening. The slow flow device can also adopts at least two inflow openings which are arranged oppositely, so the liquid tin flows across the inflow openings can mutually impact and decelerate the flow speed. Consequently, the utility model can achieve the function that the liquid tin level can steadily rise in a tin overflow device, and a steady liquid level can be formed at the position of a nozzle. So a welding foot of a product can be uniformly stained with soldering tin.

Description

Tin furnace device

The utility model relates to a kind of tin furnace device, and it is on average stable particularly to relate to a kind of tin liquor outlet liquid level that makes, and makes the welding foot of product evenly be stained with the tin furnace device of cloth scolding tin.

In the Automation of Welding process of electronic product, usually use the tin stove, it mainly acts on is that soldering tin material is melted into liquid state, and form the liquid level of a tin liquor, electronic component is then borrowed the clamping and the conveying of an automatic fixture, after making the welding foot of this electronic component be stained with scaling powder earlier, make its welding foot be stained with cloth scolding tin through the tin liquor liquid level of this tin stove again, and then weld to be connected on the circuit substrate.

As Fig. 1, shown in 2, tin stove in the past, comprise a tin liquor groove 10, one tin stream chamber 11, an one excessive tin device 12 and a drive unit 13, this tin liquor groove 10 has an accommodation space 101 in order to ccontaining aqueous tin liquor, and this tin stream chamber 11 can be by the set connecting plate 111 of both sides external, be locked in the mode of these tin liquor groove 10 edge of opening and be suspended in the accommodation space 101 of this tin liquor groove 10 with bolt, and be immersed in the tin liquor liquid level 50 times, and this tin stream chamber 11 has tin liquor inlet 112 and one tin liquor outlet 113, inside can be equipped with a pump 114, it is a receded disk impeller, the tin liquor that can be driven by these drive unit 13 driven rotary in this tin liquor groove 10 is sucked by this tin liquor inlet 112, and this tin liquor outlet 113 is gushed out certainly, this drive unit 13 comprises a motor 131, two belt pulleys 132,133, one belt 134 and an output shaft 135 constitute, 135 of this output shafts are supported with a bearing 136 that can be positioned these tin stream chamber 11 outside appropriate locations, and can be connected with this pump 114, the tin device 12 that should overflow is a tubular structure, it is the outside that is positioned this tin liquor outlet 113, the tin liquor that can Gong gush out is assembled within it, its top is provided with a spout 121, unnecessary tin liquor can be by outside this spout 121, through the guiding of a guiding incline 122 and be back in this tin liquor groove 10 to alleviate the splash of its tin liquor, and tin liquor is recycled once again, so whereby can with former should the tin liquor groove in 10 tin liquor liquid levels 50 be promoted to the height of the tin liquor liquid level 51 of this spout 121, the welding foot of electronic component is contacted behind the tin liquor liquid level of this spout 121 and be stained with cloth scolding tin, to carry out follow-up weld job.

But this tin stove is configured in the middle of the use, often cause the scolding tin of electronic component welding foot to be stained with the uneven shortcoming of cloth, and influence follow-up weld job, its reason is: because of the proportion of tin liquor quite big, tin liquor is produced to flow, and can be in this excessive tin device 12 rising tin liquor liquid level, often must make this pump 114 have big moment of torsion, just can make tin liquor have certain pressure and speed, so the tin liquor shown in Fig. 2 arrow flows to, when tin liquor is sucked by this tin liquor inlet 112, after this pump 114 is given kinetic energy, and directly gush out and enter in this excessive tin device 12 towards this tin liquor outlet 113, owing to there is not any buffer unit therebetween, make tin liquor when arrival should be overflow tin device 12, still have sizable flow velocity and inertia force, and produce sinuous flow betwixt, the result can make the tin liquor liquid level 51 of this spout 121 form a lumpy unstable liquid level, therefore, when the welding foot of electronic component is contacting under the degree of depth restriction with the limited of this tin liquor liquid level 51, each welding foot is different because of tin liquor liquid level 51 height, be stained with the cloth situation and produce different scolding tin, cause uneven phenomenon to produce, and will make some welding foots fail to be stained with scolding tin at all, and can't weld, cause product the defective products of flaw to occur.

The purpose of this utility model is to provide a kind of stable tin liquor liquid level that produces, and is stained with the tin furnace device of the stability of cloth scolding tin and promote the electronic component welding foot.

But another order of the present utility model is to provide a kind of device of bearing temperature of rotating shaft of coolant pump, to improve the tin furnace device of tin stove maintainability.

Tin furnace device of the present utility model has a unhurried current device that is the box body shape, it is indoor that this unhurried current device is located at tin stream, and be positioned between tin liquor inlet and tin liquor outlet, this unhurried current device has one can be communicated with the flow export that this tin stream chamber tin liquor exports, and at least one inflow entrance, inflow entrance by the small-bore, reach the effect that slows down the tin liquor flow, and can adopt at least two inflow entrances, with configuration mode facing each other, the tin liquor of this inflow entrance of flowing through is impacted mutually and slow down its flow velocity, and can reach the effect that the tin liquor liquid level steadily rises in this excessive tin device, and can form a steady liquid level at this spout place, in addition, connect or contact an air conduit at the bearing of the rotating shaft of this pump of supporting, make this air conduit can import mobile cold air reducing the heat of this bearing, and promote its useful life.

The utility model mainly is to flow indoor increase by one unhurried current device at this tin, and the position is between this tin liquor inlet and tin liquor outlet, it has one can be communicated with the flow export that this tin stream chamber tin liquor exports, and at least one inflow entrance, and can flow slowly at this and increase at least one baffle plate according to need between device and this tin liquor inlet, the output shaft bearing of this pump then can be established a conduit, and importing flow air, its advantage is: tin liquor flows indoor when mobile in this tin, can be subjected to stopping and guiding of this baffle plate and unhurried current device, and the design of disposing relatively in twos of the inflow entrance of borrowing this unhurried current device makes the tin liquor liquid level can rise to the spout place of this excessive tin device in mode stably, so the welding foot of electronic component can contact a steady tin liquor liquid level, be stained with the cloth situation and can reach quite average scolding tin, the quality of product is more stable, and borrow the air conduit cooling effect that this bearing connected, and can improve the stability in the running, and can reduce the generation of fault.

Below by most preferred embodiment and accompanying drawing tin furnace device of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the decomposing schematic representation of existing tin stove.

Fig. 2 is the combined side schematic diagram of existing tin stove.

Fig. 3 is the combined side schematic diagram of the utility model preferred embodiment.

Fig. 4 is the unhurried current device appearance schematic diagram of the utility model preferred embodiment.

Fig. 5 is the unhurried current device schematic top plan view of the utility model preferred embodiment.

Fig. 6 is an another kind of unhurried current schematic representation of apparatus in the utility model preferred embodiment.

Fig. 7 is the schematic diagram that the bearing in the utility model preferred embodiment connects a conduit.

As shown in Figure 3, be tin furnace device of the present utility model, it was with structure was roughly the same in the past, and not existing together is to be equipped with a unhurried current device 2 and a baffle plate 3 in tin stream chamber 11.

Cooperate shown in Figure 4, this unhurried current device 2 is to be a box body shape, can utilize the mode of welding or bolt locking to be located in this tin stream chamber 11, and the position exports 113 at this tin liquor inlet 112 and tin liquor, its upper end has one can be communicated with the flow export 21 that this tin flows chamber tin liquor outlet 113, and the lower end then is the state of sealing, and four sides are provided with an inflow entrance 22 at least, in the present embodiment, four sides of its box body are provided with inflow entrance 22 facing each other.

This baffle plate 3 is to be located in this tin stream chamber 11 in the mode that welding or bolt lock, and be positioned at 2 in this tin liquor inlet 112 and this unhurried current device, pass through for tin liquor and be reserved with a gap with the bottom of this tin stream chamber 11, and its number and on-fixed, present embodiment is to be example so that a single baffle plate 3 to be set.

During application, tin liquor shown in Fig. 3 arrow flows to, this tin liquor is entered by this tin liquor inlet 112 by the suction of pump 114 generations, and the centrifugal force that is produced because of 114 rotations of this pump is given this tin liquor and is exported the kinetic energy that 113 directions one flow towards this tin liquor, when flowing, tin liquor will at first meet with stopping of this baffle plate 3, its flow velocity is slowed down and pass through by the bottom gap of itself and this tin stream chamber 11, inflow entrance 22 by this unhurried current device 2 enters again, borrow the inflow entrance 22 of small-bore, can reach the effect that reduces the tin liquor flow, this inflow entrance 22 is to be provided with in mode facing each other, cooperate Fig. 4 again, shown in 5, make the tin liquor that flows into by each inflow entrance 22 from this unhurried current device 2 outsides be able to impact mutually as the arrow direction, and can reach the effect of cancelling out each other kinetic energy and slowing down its flow velocity, so can form a tin liquor liquid level comparatively stably, and rise to spout 121 places of this excessive tin device 12 gradually.

The spout 121 formed aperture areas of tin device 12 can be done suitable adjustment according to the size of its welding product of using owing to should overflow, when this spout 121 increases, its must the rising liquid level the tin liquor amount increase relatively, for reaching this purpose, with common practices is to reach with the actuating force that strengthens motor, but this mode needs often to change motor exerts oneself, and cause motor to damage easily, more cause simultaneously the tin liquor liquid level of this spout 121 unstable more, and of the present utility model make rule can utilize the pore size of the inflow entrance 22 that changes this unhurried current device 2 and number how much, just can reach and change flow and the speed that tin liquor enters this excessive tin device 12, as shown in Figure 6, this unhurried current device 2 is disposed in the mode that four sides respectively are provided with two inflow entrances 22, to reach the effect that increases tin liquor, and this inflow entrance 22 is still to keep kenel facing each other, can reach best tin liquor liquid level stabilizing effect, in like manner, when desire reduces this tin liquor and enters the amount of this excessive tin device 12, then only need the pore size or the number of the inflow entrance 22 of this unhurried current device 2 of reduction to get final product, so, just need not change motor and exert oneself, the stability of running is better.

In addition, be the life-span and stability of further improving the running of tin stove, useful life and stability in order to the bearing 136 that supports 114 runnings of this pump are quite important, for this reason, as shown in Figure 7, can establish a conduit 4 at these bearing 136 places, can make this conduit 4 adopt the mode that contacts by the inside of this bearing 136 or with this bearing 136, and utilize as gas sources such as air compressor machines, cold air is constantly squeezed in this conduit 4, and can the heat that this bearing 136 is produced be carried off in the mode of conducting by the air in this conduit 4, reach the purpose that reduces these bearing 136 temperature, the excessive phenomenon of burning of the load that output caused that this bearing 136 can the Yin Mada high pass filter is produced.

Claims

1 one kinds of tin furnace devices, include a tin liquor groove, tin stream chamber, a drive unit and an excessive tin device, has an accommodation space in this tin liquor groove, this tin stream chamber is the accommodation space that places this tin liquor groove, it has tin liquor inlet and tin liquor outlet, and inside is provided with a pump, and this excessive tin device is the outside, tin liquor exit that is positioned this tin stream chamber, its top is provided with a spout, it is characterized in that:

This tin furnace device also comprises a unhurried current device, and it is indoor that this unhurried current device is provided in a side of this tin stream, and is positioned between this tin liquor inlet and tin liquor outlet, and it is to be a box body shape, and have one and can be communicated with the flow export that this tin flows chamber tin liquor outlet, and at least one inflow entrance.

2 tin furnace devices as claimed in claim 1 is characterized in that:

The inflow entrance of this unhurried current device is to be provided with in mode facing each other.

3 tin furnace devices as claimed in claim 1 is characterized in that:

This unhurried current device more comprises at least one baffle plate that is positioned at before tin liquor flows into this inflow entrance.

4 tin furnace devices as claimed in claim 1 is characterized in that:

This drive unit comprises a motor, two belt pulleys, a belt and an output shaft, and this output shaft is to support with a bearing that is positioned this tin stream outdoor, and is connected with the pump of this tin stream chamber interior.

5 tin furnace devices as claimed in claim 4 is characterized in that:

This bearing connects or contacts a conduit that can import the cold air that flows.