CN113245658A

CN113245658A - Can preheat injectable soldering tin instrument

Info

Publication number: CN113245658A
Application number: CN202110683205.4A
Authority: CN
Inventors: 宋涛
Original assignee: Hunan Huke Manufacturing Co ltd
Current assignee: Hunan Huke Manufacturing Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-08-13
Anticipated expiration: 2041-06-21
Also published as: CN113245658B

Abstract

The invention discloses a preheating injectable soldering tin tool, which comprises: a heat conductor having a heating element disposed thereon; the heat conductor is also provided with a heating channel for passing through tin wires, one end of the heating channel is provided with a channel tin wire inlet, and the other end of the heating channel is provided with a tin outlet nozzle; and a duct having a duct tin wire inlet at one end and a duct tin wire outlet at the other end, the duct tin wire outlet aligned with the channel tin wire inlet; the guide pipe positioned at one end of the tin wire outlet of the guide pipe is provided with a preheating section which is arranged close to the heat conductor in a hanging way. According to the preheating injectable soldering tool provided by the invention, the welding of the workpiece is realized in a sectional heating mode, the preheating injectable soldering tool can be used for heating a welding wire alone or fusion welding, the tin output is accurate and controllable, and the soldering quality is ensured.

Description

Can preheat injectable soldering tin instrument

Technical Field

The invention relates to the technical field of soldering, in particular to a preheating injectable soldering tool.

Background

Soldering is a welding method in which a low-melting-point metal solder is melted by heating and then penetrates into and fills a gap at a joint of metal parts. Since solder is usually tin-based alloy, soldering iron is commonly used as a heating tool, and is widely used in the electronic industry.

The automatic tin machine that send of certain type among the prior art is external with going out the tin pipe, sends soldering tin to the soldering iron head of heating and melts soldering tin, then is close to the soldering iron head by the thing that welds and welds, and its main defect that exists lies in: 1. the soldering iron and the tin outlet guide pipe are supported by a common bracket, the arm of force is long, and molten soldering tin is easy to shake at an uncertain position when the soldering iron and the tin outlet guide pipe work on vibrating automatic equipment; 2. the object to be welded can be welded only by approaching the soldering iron head; 3. the soldering bit is easy to be left, and the size of the molten soldering tin is not controllable along with the increase of residues; 4. the contact surface of soldering tin and a soldering bit is small, so that the soldering tin is not suitable for continuous and rapid automatic operation with large tin adding amount; 5. the workpiece in the deep hole cannot be soldered or the like. Therefore, in view of the insufficient structural and functional advantages of the conventional soldering tool, it is necessary to improve the conventional soldering tool.

Disclosure of Invention

In view of the above, the present invention provides a preheating injection soldering tool, which can be used for welding workpieces by heating in a segmented manner, and can be used for heating welding wires alone or for fusion welding, with a controlled and accurate solder yield, thereby ensuring soldering quality.

To achieve the above object, the present invention provides a preheatable injectable soldering tool comprising:

a heat conductor having a heating element disposed thereon; the heat conductor is also provided with a heating channel for passing through tin wires, one end of the heating channel is provided with a channel tin wire inlet, and the other end of the heating channel is provided with a tin outlet nozzle; and

a duct having a duct tin wire inlet at one end and a duct tin wire outlet at the other end, the duct tin wire outlet aligned with the channel tin wire inlet; the guide pipe positioned at one end of the tin wire outlet of the guide pipe is provided with a preheating section which is arranged close to the heat conductor in a hanging way.

In some embodiments, the conduits and the heating channel are arranged in a straight line along the length extension thereof.

In some embodiments, the heat conductor has an L-shaped cross section, the heating channel is disposed through a short side of the L-shape, and the conduit is disposed parallel to and in suspension with a long side of the L-shape.

In some embodiments, a tin wire feeding mechanism is further included, the tin wire feeding mechanism including: the tin wire clamping device comprises a stepping wheel, a driven wheel and a stepping motor, wherein the stepping wheel and the driven wheel are oppositely clamped with a tin wire, and the stepping wheel is in transmission connection with the output end of the stepping motor.

In some embodiments, further comprising: the guide block is internally provided with a guide channel communicated with a guide tube tin wire inlet, and the stepping wheel and the driven wheel clamp the tin wire relatively and are arranged in the guide channel.

In some embodiments, further comprising disposed on the thermal conductor: and the thermocouple is electrically connected with the temperature controller.

In some embodiments, a wear sleeve is provided at the channel tin wire inlet to pass the tin wire.

In some embodiments, the periphery of the heat conductor is further provided with a heat insulation layer.

In some embodiments, the tin outlet nozzle is detachably arranged with the heating channel.

In some embodiments, the heating element is an electrical heating tube.

Compared with the prior art, the invention has the beneficial effects that: the preheating injectable soldering tool can realize the welding of workpieces in a sectional heating mode, can be used for heating welding wires only and fusion welding, has accurate and controllable tin output and ensures the soldering quality. Specifically, the welding wire gets into wherein from the import of pipe tin silk at the uniform velocity, under the effect of heating element on the heat conductor, the welding wire preheats in the pipe, and the tin silk that preheats gets into passageway tin silk import and continues to heat in the heating passageway after the export of pipe tin silk, can satisfy two kinds of welded operating conditions afterwards: firstly, the tin wire coming out of the tin outlet nozzle is also in an extremely soft solid state, can be uniformly filled in a tin joint of a workpiece, and is finally melted and welded tightly by heating the workpiece; secondly, the tin liquid from the tin outlet nozzle can be welded and coated on the welding position of the workpiece in an injection mode.

In addition, on the soldering tin tool, the size of a tin point can be controlled by changing the aperture size of the tin outlet nozzle; the whole tool can be applied to all processes of automation equipment requiring soldering tin in a modularized manner, is good in shock resistance when being fixed on a metal support, and can inject the soldering tin into deep holes which can not be reached by some conventional soldering irons.

Drawings

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 is a schematic diagram of a prior art automated soldering tool;

FIG. 2 is a schematic main sectional view of an embodiment of the present invention;

FIG. 3 is a side view of the FIG. 1 structure of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1A;

FIG. 5 is a schematic view of the structure of FIG. 1 taken along direction A;

FIG. 6 is a schematic cross-sectional view of the structure of B-B in FIG. 1 according to the present invention.

In the figure: 1. a heat conductor; 11. a heating element; 12. a heating channel; 13. a tin outlet nozzle; 14. a thermocouple; 15. a temperature controller; 16. a wear-resistant sleeve; 17. a heat insulation layer; 2. a conduit; 21. a conduit tin wire inlet; 22. a conduit tin wire outlet; 3. a tin wire feeding mechanism; 31. a step wheel; 32. a driven wheel; 33. a stepping motor; 34. and a guide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, an exemplary embodiment of the present invention provides a solder tool capable of preheating an injection, including:

the heat conductor 1 can be made of brass materials, the size of the heat conductor can be adjusted according to requirements, the heat stored in the brass can effectively keep the temperature stability in continuous production, and the heat conductor 1 is provided with a heating element 11; the heat conductor 1 is also provided with a heating channel 12 for passing tin wires, one end of the heating channel 12 is provided with a channel tin wire inlet, and the other end is provided with a tin outlet 13; and

the inner diameter of the conduit 2 is determined according to the diameter of the tin wire, wherein the diameter of the tin wire is usually 0.8mm to 2mm, the material of the conduit 2 can be stainless steel, glass or other materials meeting the requirement, and can be a hose or a hard tube, and the bending and wrinkling of the tin wire can be effectively prevented; one end of the conduit 2 is provided with a conduit tin wire inlet 21, the other end of the conduit 2 is provided with a conduit tin wire outlet 22, the conduit tin wire outlet 22 is aligned with the channel tin wire inlet, but the conduit tin wire outlet 22 and the channel tin wire inlet are arranged in a non-contact way to form a sudden temperature change section and prevent the outlet end of the conduit 2 from blocking materials during the next welding; the guide tube 2 at one end of the guide tube tin wire outlet 22 is provided with a preheating section which is arranged close to the heat conductor 1 in a hanging way.

In the specific use process, the welding wire enters the guide tube from the guide tube tin wire inlet 21 at a constant speed, the welding wire is preheated in the guide tube 2 under the action of the heating element 11 on the heat conductor 1, the preheated tin wire enters the channel tin wire inlet after exiting from the guide tube tin wire outlet 22 and is continuously heated in the heating channel 12, and then two welding working conditions can be met: firstly, the tin wire coming out of the tin outlet nozzle 13 is also in an extremely soft solid state, can be uniformly filled in the tin joint of a workpiece, and is finally melted and welded tightly by heating the workpiece; secondly, the tin liquid from the tin outlet nozzle 13 can be welded and coated on the welding position of the workpiece in an injection mode. The method has the advantages that the workpiece is welded in a segmented heating mode, the method can be used for heating welding wires and fusion welding, the tin output is accurate and controllable, and the soldering quality is guaranteed; the time length for melting the tin wire can be greatly reduced by preheating; the preheating is carried out in a suspension non-contact mode, and the situation that wires are blocked in the guide pipe is avoided.

In order to ensure smooth tin wire feeding, in this embodiment, the length extension lines of the guide tube 2 and the heating channel 12 are optionally arranged in a straight line.

Further, the cross section of the heat conductor 1 is L-shaped, the heating channel 12 is arranged by penetrating through the short side of the L-shape, and the conduit 2 is arranged in parallel with the long side of the L-shape in a suspended manner.

In order to continuously and accurately convey the tin wire, in this embodiment, optionally, a tin wire feeding mechanism 3 is further included, where the tin wire feeding mechanism 3 includes: the tin wire welding device comprises a stepping wheel 31, a driven wheel 32 and a stepping motor 33, wherein the stepping wheel 31 and the driven wheel 32 are arranged oppositely to clamp a tin wire, and the stepping wheel 31 is in transmission connection with the output end of the stepping motor 33.

Further, still include: the guide block 34 is internally provided with a guide channel communicated with the guide tube tin wire inlet 21, and the stepping wheel 31 and the driven wheel 32 are arranged in the guide channel in a manner of clamping the tin wire relatively.

In the above tin wire feeding mechanism 3 driven by the stepping motor 33, the stepping motor 33 may be 28, 42, 57, or 86 type, the stepping motor 33 drives the two stepping wheels 31 and the driven wheels 32 for clamping the tin wire, and the stepping wheels 31 and the driven wheels 32 may be driven by the forward and reverse rotation of the stepping motor 33 to drive the tin wire to advance or retreat; the distance of wire feeding or wire withdrawing is controlled by controlling the stepping motor 33 by pulse signals, when tin melting is not needed, the stepping motor 33 rotates reversely, and the solder wire is withdrawn from the high-temperature conduit 2 and the heating channel 12.

In order to accurately monitor the temperature on the heat conductor 1 in real time, in this embodiment, optionally, the method further includes: and the thermocouple 14 is electrically connected with the temperature controller 15. The thermocouple 14 may be: the thermocouple device comprises an N-type thermocouple, a K-type thermocouple, an E-type thermocouple, a J-type thermocouple, a T-type thermocouple, an S-type thermocouple, a B-type thermocouple, an R-type thermocouple and any other type meeting the measurement accuracy and temperature range; the material of the thermocouple 14 may be: n-nickel chromium silicon-nickel silicon, K-nickel chromium-nickel silicon, E-nickel chromium-copper nickel (nickel chromium-constantan), J-iron-copper nickel, T-copper nickel, S-platinum rhodium 10-platinum, B-platinum rhodium 30-platinum rhodium, R-platinum rhodium 13-platinum or any other material meeting the requirements; the wire diameter of the thermocouple 14 may be between 0.5mm and 5mm or other diameter values as desired, and the wire length of the thermocouple 14 may be between 6mm and 60mm or other length values as desired. The temperature controller 15 can set the temperature when the solder wire preheats or melts, makes the temperature of heat conductor 1 remain a constant value all the time, and the temperature controller 15 can have the communication function and the warning suggestion, by the on-off of host computer or remote computer control temperature or equipment circuit.

In order to reduce wear at the channel wire inlet, in this embodiment, a wear sleeve 16 is optionally provided at the channel wire inlet to pass the wire. Furthermore, the wear-resistant sleeve 16 is a tubular structure made of a stainless steel tube and is embedded in the brass heating channel 12, so that on one hand, the tin wire can be prevented from frequently moving back and wearing the brass heating channel 12; on the other hand, stainless steel is high-temperature resistant and oxidation resistant, the resistance of the tin wire is effectively reduced, and the stainless steel is slow in heat transfer relative to brass, so that the situation of backflow of molten soldering tin is effectively prevented by utilizing temperature difference.

In order to reduce heat dissipation, in this embodiment, optionally, a thermal insulation layer 17 is further disposed on the periphery of the heat conductor 1. The heat insulation layer 17 is wrapped on the periphery of the heat conductor 1, so that heat loss and scalding of operators can be effectively prevented, and the heat insulation layer 17 can be made of aluminum silicate ceramic fibers and can resist high temperature of 1260 ℃. Further, if the tin wire in the preheating section does not reach the preheating temperature after the heat insulation layer 17 is added, a groove without the heat insulation layer 17 is left on the heat conductor 1 close to one side of the conduit 2.

In order to meet the requirements of different soldering conditions, in this embodiment, optionally, the tin outlet nozzle 13 and the heating channel 12 may be detachably disposed, and may be mounted by a thread. The tin outlet nozzle 13 can be set into different shapes, such as a round opening and a square opening, can be applied to different scenes, can control the diameter of tin liquid drops through different sizes of the aperture of the tin outlet nozzle, and can also send molten soldering tin to the deep part of the opposite-shaped hole.

In order to achieve rapidity of heating, in the present embodiment, the heating element 11 is optionally an electric heating tube. The electric heating pipes are of a dry burning type, can be in one group or multiple groups, can be in a tubular shape or a sheet shape, and are embedded and installed in the copper heat conductor.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Claims

1. A preheatable injectable solder tool, comprising:

a heat conductor (1) on which a heating element (11) is arranged; the heat conductor (1) is also provided with a heating channel (12) for passing tin wires, one end of the heating channel (12) is provided with a channel tin wire inlet, and the other end is provided with a tin outlet nozzle (13); and

a duct (2) having a duct tin wire inlet (21) at one end and a duct tin wire outlet (22) at the other end, the duct tin wire outlet (22) being aligned with the channel tin wire inlet; the guide tube (2) positioned at one end of the guide tube tin wire outlet (22) is provided with a preheating section which is arranged in a suspended way and close to the heat conductor (1).

2. The preheatable injectable solder tool according to claim 1, wherein the length extension of the conduit (2) and the heating channel (12) is arranged in a straight line.

3. The preheatable injectable solder tool according to claim 2, characterized in that the heat conductor (1) is L-shaped in cross-section, the heating channel (12) is arranged through the short side of the L-shape, and the conduit (2) is arranged parallel to the long side of the L-shape and in suspension.

4. A preheatable injectable solder tool according to any one of claims 1-3, further comprising a wire feed mechanism (3), the wire feed mechanism (3) comprising: step wheel (31), follow driving wheel (32) and step motor (33), step wheel (31) presss from both sides tight tin silk setting with following driving wheel (32) relatively, step wheel (31) are connected with step motor (33)'s output transmission.

5. The preheatable injectable solder tool of claim 4, further comprising: the tin wire guiding device comprises a guiding block (34), a guiding channel communicated with a guiding tube tin wire inlet (21) is specifically arranged in the guiding block (34), and the stepping wheel (31) and a driven wheel (32) clamp the tin wire and are arranged in the guiding channel relatively.

6. The preheatable injectable solder tool according to any one of claims 1 to 3, further comprising, disposed on the heat conductor (1): the thermocouple (14), thermocouple (14) and temperature controller (15) electric connection.

7. The preheatable injectable solder tool of any one of claims 1-3, wherein the channel wire inlet is provided with a wear sleeve (16) for passing the wire.

8. The preheatable injectable solder tool according to any one of claims 1 to 3, wherein the heat conductor (1) is further provided with a thermal insulating layer (17) on the periphery.

9. The preheatable injectable solder tool according to any one of claims 1 to 3, wherein the tin outlet nozzle (13) is detachably provided to the heating channel (12).

10. The preheatable injectable solder tool according to any one of claims 1 to 3, wherein the heating element (11) is an electric heating tube.