JPH04351268A - Iron tip unit and soldering iron device - Google Patents

Abstract

PURPOSE:To furnish a soldering device capable of exchanging the iron tip with one touch and excellent in the rising performance of the iron tip temperature. CONSTITUTION:Since a cartridge type iron tip unit 18 with a built-in heater part 24 provided with the small-sized iron tip 12 having a specified shape on the tip of a cylindrical body 20 and a plug part 26 on a base end of the cylindrical body 20, respectively is formed, fitting is completed by one touch operation only by inserting this iron tip unit 18 into a soldering iron main body 19. In addition, since the iron tip 21 is of a small size and integrated with the heater part 24 without a gap, the heating time is short and the rising performance of the temperature is excellent.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention selects and uses the best shaped iron tip for each point when soldering workpieces of various shapes. In other words, the tip can be quickly replaced as an automatic tool changer. The present invention relates to a soldering iron tip unit and a soldering iron device that are capable of increasing the soldering iron tip temperature and have excellent performance in rising the temperature of the soldering iron tip.

0002

2. Description of the Related Art Conventional soldering iron devices include those shown in FIGS. 6 and 7, for example. Reference numeral 1 denotes a soldering iron device, which is supported by an air cylinder 2 so as to be slidable up and down along a slide rail 3. The soldering iron device 1 includes a soldering iron main body 4 and a soldering iron tip 5 that is replaceably attached to the soldering iron main body 4. The soldering iron main body 4 is provided with a heater section 6 on the lower side.

[0003] The soldering iron tip 5 is attached so as to be inserted between the insertion hole 8 of the soldering iron tip holder 7 and the squeezed portion 11 of the outer tube 10. The soldering iron tip 5 is formed with a tangled portion 11a that comes into contact with the squeezed portion 11. Therefore, in order to install the soldering iron tip 5 into the recess 8 of the soldering iron tip holder 7, first insert the insertion hole 5b of the soldering iron tip 5 into the heater section 6, and then cover it with the outer tube 10.
It is fixed with the threaded portion 10a of the outer tube 10. Then, the soldering iron tip 5 is supported from below by the squeeze portion 11 of the attached outer tube 10, so that the soldering iron tip 5 is in an attached state. In the soldering iron device 1 in which the soldering iron tip 5 is integrally attached to the soldering iron main body 4 in this way, heat is transferred from the heater section 6 to the soldering iron tip 5.
Since the soldering iron tip 5 becomes high temperature, by moving the soldering iron tip 5 up and down with the air cylinder 2, the thread solder 13 facing the tip 5a of the soldering iron tip 5 is melted, and the terminal portion 15 of the electronic component 14 is melted.
etc., can be soldered.

0004

[Problems to be Solved by the Invention] However, such conventional techniques have had various problems as described below. The replacement work is troublesome because it is necessary to remove the outer tube 10 every time the soldering iron tip 5 is replaced. Therefore,
It was also not possible to automatically change the soldering iron tip 5 using an automatic changing device (so-called auto tool changer) or the like. Further, since the size of the soldering iron tip 5 is relatively large, even when the soldering iron tip 5 is attached to the heater section 6, the temperature does not reach a predetermined temperature immediately. That is, a certain amount of time is required until the temperature reaches the temperature required for soldering. Therefore, during a series of automatic soldering processes, the soldering iron tip 16a having a different tip shape, which is stored in advance in the replacement iron tip preparation holder 12,
Replacement with 16b and 16c would be extremely disadvantageous in terms of time and would not be practicable in reality. Furthermore, iron tip 5
The temperature decreases each time one point is soldered because it comes into contact with the lower temperature wire solder 13 and the terminal portion 15. Once the temperature of the soldering iron tip 5 has fallen, it returns to its original temperature by being heated by the heater section 6, but as mentioned above, since the soldering iron tip 5 is large, the time for returning to the original temperature (soldering cycle time) tends to be long. , it was not possible to improve the processing speed when successively soldering a plurality of points (terminal portions 15). In addition, since the heater part 6 is fixed to the soldering iron body 4 and only the soldering iron tip 5 is replaced, a fairly large gap S is created between the outer diameter of the heater part 6 and the inner diameter of the insertion hole 5b of the soldering iron tip 5. If it is not provided, it will be difficult to insert and remove the soldering iron tip 5. Therefore, since the gap S was conventionally sufficiently provided, the thermal conductivity from the heater section 6 to the soldering iron tip 5 also tended to deteriorate accordingly.

[0005] The present invention has been made with attention to such conventional technology, and an object of the present invention is to provide an iron tip unit and a soldering iron device that enable one-touch replacement of the iron tip and have excellent performance in rising the temperature of the iron tip. That is.

[0006]

[Means for Solving the Problems] In order to achieve the above object, a soldering iron tip unit according to the present invention has a small soldering iron tip of a predetermined shape at the tip of a cylindrical body, and is integrated with the soldering iron tip within the cylindrical body. A cartridge type is provided by providing a heater part that is shaped like a cylindrical body, and a plug part that guides the wiring of the heater part at the base end of the cylindrical body.
It is designed to be replaceably attached to the soldering iron body. Another soldering iron tip unit has a heater section formed by winding a high-frequency coil around a magnetic material, and heats the magnetic material using high-frequency waves. Furthermore, the soldering iron device according to the present invention includes the soldering iron tip unit and a soldering iron main body, and the soldering iron main body has an insertion portion for receiving the proximal end portion of the soldering iron tip unit; A socket portion to which a plug portion of a soldering iron tip unit is connected is provided in the insertion portion, and the soldering iron tip unit is attached to the soldering iron body in a replaceable manner.

[0007]

[Function] Since we have formed a cartridge type soldering iron tip unit with a built-in heater part, which has a small soldering iron tip of a predetermined shape at the tip of the cylindrical body and a plug part at the base end of the cylindrical body, this soldering iron tip unit can be soldered. Installation is completed with a one-touch operation just by inserting it into the iron body. Therefore, the iron tip can be automatically replaced using an automatic changing device (so-called auto tool changer) or the like.

Furthermore, since the iron tip is small and the heater part and the iron tip are integrated without any gaps, the heating time is short and the temperature rise performance is excellent. Therefore, during a series of automatic soldering processes, even if the iron tip is replaced with another tip with a different tip shape, there is not much disadvantage in terms of time, and furthermore, when soldering multiple points in succession, It is also possible to improve processing speed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS This preferred embodiment will be described below with reference to FIGS. 1 to 5. Note that explanations that are redundant with those of the prior art will be omitted. Figure 1
- FIG. 3 is a diagram showing a soldering iron tip unit and a soldering iron device according to an embodiment of the present invention. A soldering iron device 17 according to this embodiment includes a soldering iron tip unit 4 and a soldering iron body 19. The soldering iron tip unit 18 has a cartridge structure in which a small soldering iron tip 21 of a predetermined shape is provided at the tip of a cylindrical body 20 made of stainless steel, which is a metal with low thermal conductivity, and a plug portion 26 is provided at the base end of the cylindrical body 20. It becomes. still,
The cylindrical body 20 is caulked (
It is attached by shrink fitting or screwing (also available). A slight recess 23 is formed at the base end of the soldering iron tip 21, and a heater section 24 with a sensor containing a heating wire coil is integrally attached within this recess 23. Heater part 2
Wiring 25 for supplying electricity to 4 is led to the plug portion 26 at the base end. A groove portion 27 is formed around the side surface of this plug portion 26 .

On the other hand, the soldering iron main body 19 is formed with an insertion portion 28 for receiving the base end portion of the soldering iron tip unit 18, and the plug of the soldering iron tip unit 18 is disposed at the top of the insertion portion 28. A socket portion 29 that can be freely connected to the portion 26 is provided. The tip of a stopper pin 30 provided on the side surface of the soldering iron body 19 is biased by a spring 31 and faces the inner surface of the insertion portion 28 near the socket portion 29 .

[0011] Soldering iron tip unit 18 and soldering iron body 19
have such a structure, so that when the base end portion of the soldering iron tip unit 18 is inserted into the insertion portion 28 of the soldering iron main body 19, the plug portion 26 of the soldering iron tip unit 18 will be inserted into the insertion portion 28. is connected to the socket part 29 of the stopper pin 30, and the tip of the stopper pin 30 is connected to the plug part 26.
Since it engages with the groove 27 on the side surface, the soldering iron tip unit 18 remains attached without falling off. In addition, when removing the soldering iron tip unit 18, the engagement between the stopper pin 30 and the groove portion 27 is released by pulling the soldering iron tip unit 18 downward, so that the soldering iron tip unit 18 can be pulled out downward as it is. Further, since the cylinder body 20 is made of stainless steel, which is a metal with low thermal conductivity, the cylinder body 20 can be replaced by holding it by hand. In this way, the soldering iron tip unit 18 can be attached or removed with a one-touch operation by simply inserting the soldering iron tip unit 18 into the insertion part 28 of the soldering iron main body 19 or removing it from the insertion part 28. Replacing the soldering iron tip unit 18 is very easy. Therefore, it is also possible to automatically replace the soldering iron tip unit 18 using a known automatic replacement device (so-called auto tool changer).

Furthermore, since the size of the soldering iron tip 21 is small and the temperature rise performance is good, even if the soldering iron tip unit is replaced with another soldering iron tip unit with a different soldering tip shape, the temperature of the soldering iron tip will quickly reach the predetermined temperature, and the temperature will be shortened. It will be ready for soldering in a few moments. In addition, the fact that the temperature rise performance of the soldering iron tip 21 is good means that the soldering cycle time (t) is shortened as shown in Fig. 3, which improves the processing speed when soldering multiple points in succession. be able to. In other words, the conventional soldering iron tip (the graph shown by the dotted line) comes into contact with low-temperature solder wire, etc. every time one point is soldered.
The temperature drops to some extent. In the conventional case, once the temperature of the iron tip drops, because the size of the iron tip is large and there is a gap between the heater part and the iron tip, it takes a long time to return to the original temperature, and multiple points are lost. The soldering cycle time (T) when continuously soldering tends to become long. Therefore, there is a limit to the number of points that can be processed within a unit time. However, in the iron tip unit 18 of the present invention, the size of the iron tip 21 is small, the watt density of the heater section 24 is high, and there is no gap between the iron tip 21 and the heater section 24, so the temperature decreases. It is difficult to use and has good temperature rise performance. Therefore, the soldering cycle time (t) is shortened (see the graph shown by the solid line), and it becomes possible to solder a plurality of points one after another in a short period of time. Although it depends on the conditions, in the case of Figure 3,
While conventional methods process one point, the present invention allows four points to be processed.

In the case of the present invention, since the soldering iron tip 21 is made smaller, the heater portion 24 also needs to be made smaller accordingly. However, since the heating performance of the heater section 24 cannot be reduced, it is necessary to create a structure that can generate a large amount of heat even if the heat generating section (heating wire section) is made small. If we try to obtain a large amount of heat from such a small heat generating part (in other words, if the watt density increases), the life of the heat generating part will be shortened, but the iron tip 21 itself will have an average of 50,000 points (in terms of time). Even if the lifespan of the heater section 24 is reduced because it becomes unusable after approximately one week) due to wear, the soldering iron tip 21 and the heater section 24 are integrally constructed, so they can be replaced at the same time. The lifespan of the soldering iron tip 21 is equivalent to that of the soldering iron tip 21 and is sufficient, so there is no particular problem.

FIG. 4 shows a soldering iron tip unit 3 according to another embodiment.
FIG. In this embodiment, a magnetic metal 36 is integrally provided on the soldering iron tip 21, and a high-frequency heating coil 37 is wound around the magnetic metal 36 to heat the heater section 38.
is formed.

FIG. 5 further shows a soldering iron tip unit 3 according to an embodiment.
It is a figure showing 9. In this embodiment, the heater portion 42 is formed by integrally providing the soldering iron tip 21 with an insulator (ceramic, magnesium oxide, etc.) 41 with a resistance heating element (tungsten, nichrome wire, etc.) 40 embedded therein. There is.

In the above description, a temperature sensor is not specifically shown inside the soldering iron tip, but in an actual soldering iron tip or heater section, a temperature sensor is provided.

[0017]

Effects of the Invention The soldering iron device according to the present invention has the contents as described above, and has a small soldering iron tip of a predetermined shape at the tip of the cylindrical body, and a plug portion at the base end of the cylindrical body. Since we have formed a cartridge type soldering iron tip unit with a built-in heater, installation can be completed with a one-touch operation by simply inserting this soldering iron tip unit into the soldering iron body. Therefore,
The iron tip can be automatically replaced using an automatic changing device (so-called auto tool changer). In addition, since the iron tip is small and has a short heating time and excellent temperature rise performance, there is no disadvantage in terms of time even if it is replaced with another iron tip with a different tip shape during a series of automatic soldering processes. . Furthermore, since the base end side of the cylinder body does not become hot, highly accurate attachment to the soldering iron body is possible. Furthermore, it is possible to improve the processing speed when soldering a plurality of points in succession.

[0018]

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a soldering iron device according to an embodiment of the present invention, showing a state before a soldering iron tip unit is inserted into a soldering iron body.

FIG. 2 is a sectional view corresponding to FIG. 1 showing a state in which the soldering iron tip unit is inserted into the soldering iron body.

FIG. 3 is a graph showing temperature changes at the iron tip.

FIG. 4 is a sectional view showing a soldering iron tip unit according to another embodiment.

FIG. 5 is a sectional view showing a soldering iron tip unit according to another embodiment.

FIG. 6 is a cross-sectional view of a conventional soldering iron device, showing a state in which a soldering iron tip is attached to a soldering iron body.

FIG. 7 is a sectional view corresponding to FIG. 6 showing a state in which the soldering iron tip is removed from the soldering iron body.

[Explanation of symbols]

17...Soldering iron device 18...Soldering iron tip unit 19...Soldering iron body 20...Cylinder 21…Soldering iron tip 22...Plug part 24...Heater section 25...Wiring 28...Insert part 29...Socket part

Claims (3)

[Claims] [Claim 1] A small soldering iron tip of a predetermined shape is provided at the tip of a cylindrical body, a heater portion integrated with the soldering iron tip is provided within the cylindrical body, and wiring for the heater portion is guided to the base end of the cylindrical body. A cartridge type soldering iron tip unit with a plug part that can be attached to the soldering iron body in a replaceable manner. 2. The soldering iron tip unit according to claim 1, wherein a heater section is formed by winding a high frequency coil around a magnetic material, and the magnetic material is heated by high frequency. 3. A soldering iron tip unit comprising the soldering iron tip unit according to claim 1 or 2 and a soldering iron main body, wherein an insertion portion is formed in the soldering iron main body for receiving the proximal end portion of the soldering iron tip unit, and A soldering iron device characterized in that a socket part to which a plug part of a soldering iron tip unit is connected is provided in an insertion part, and the soldering iron tip unit is attached to a soldering iron main body so as to be replaceable.