JPH04187372A - Thermal press adhesion tool - Google Patents

Abstract

PURPOSE:To prevent temperature from falling at both end parts of a thermal press-adhesion tool and to uniformize the distribution of temperature by composing this tool of a tool body and a long bar-shaped heater embedded in this tool body and projecting both end parts of this heater from this tool body. CONSTITUTION:A cartridge heater 2 is embedded in a thermal press-adhesion tool body 1 and electric power is supplied to the heater through a lead wire 3. This tool has projecting parts 4, 5 from the heater body and a thermocouple 6 is connected with a temperature controller. The end parts of the cartridge heater are projected from the thermal press-adhesion tool body to prevent temperatures from falling down at both ends of the thermal press-adhesion tool. In this way, the temperature at both ends of the thermal press-adhesive tool is prevented from falling down without raising manufacturing cost and the distribution of the temperature can be uniformed. Further, adjustment of the amount of projection of the heater and installation of a simple cooling plate can control temperatures at the end parts of the thermal press-adhesion tool easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a thermocompression bonding tool for bonding elongated parts by applying heat and pressure.

[Prior Art] Conventionally, a thermocompression bonding tool for thermocompression bonding an elongated part has a tool body 14, as shown in FIGS.
A long cartridge heater 15 was buried inside to raise the temperature. At this time, in order to prevent the temperature from decreasing at both ends of the tool, a cartridge heater was manufactured and used for the thermocompression bonding tool, with the amount of heat generated at both ends being larger than that at the center.

Another method is to divide the heater into three or more parts and control each part independently to average the temperature distribution.

[Problems to be Solved by the Invention] However, the cartridge heater used in the above-mentioned conventional example, which generates a larger amount of heat at both ends than the other parts, has a complicated structure and is expensive, and temperature control is not easy and does not work as designed. It was not always possible to obtain a thermocompression bonding tool with uniform temperature distribution. Also, if you divide the heater and control the temperature individually, you will need to use many expensive temperature controllers.
The structure became increasingly complex and expensive.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a thermocompression bonding tool that has a simple structure and can provide a uniform temperature distribution along the longitudinal direction.

[Means and Effects for Solving the Problems] In order to achieve the above object, according to the present invention, the end portion of the cartridge heater protrudes from the thermocompression bonding tool body. This prevents temperature drop at both ends of the thermocompression bonding tool.

[Example] Fig. 1 and Fig. 2 show a first embodiment of the present invention.
3 is a lead wire that supplies power to the cartridge heater.

4.5 indicates a protruding portion of the heater 2 from the main body. 6 is a thermocouple, which is connected to a temperature controller (not shown).

Since the cartridge heater 2 generates heat uniformly over the effective length of the heater, the parts 4 and 5 protruding from the tool body 1 also generate heat, and the amount of light is divided into the amount dissipated into the air and the amount of heat transferred to the lead wire 3. The heat is divided into the heat transferred to the tool body 1 and the heat transferred to the tool body 1.

In this example, the length of the protruding portion 4 is set to 7 mm, and the length of the protruding portion 5 is set to 811] m, so that the temperature is adjusted to 35 mm over the entire length.
It was possible to maintain the temperature at 100±1°C over 0mm.

3 and 4 show another embodiment of the invention;
The figure shows a front view, and FIG. 4 shows a side view. In the figure, 7 is the main body of the thermocompression bonding tool, 8 is a cartridge heater with an outer diameter of 1.6 mm, 9 is a lead wire for supplying power to the heater, 10 is a protrusion on the tip side of the cartridge heater,
11 is the protruding part on the cartridge heater lead wire side, 1
2 is a heat sink, and 13 is a thermocouple connected to a temperature controller.

In this embodiment, the length of the protruding portion 10 of the cartridge heater 8 is 8 mm to prevent temperature drop at the end, and a heat sink 12 is attached to adjust the amount of heat generated from the protruding portion 11 on the lead wire side. Ta. This can prevent the temperature of the end portion from becoming higher than the center portion if the protruding portion 11 is too long.

In this example, the total length of the heater is 120 ± 300 mm.
A temperature distribution of 1°C was obtained.

[Effects of the Invention] As described above, by making the end portion of the heater protrude from the thermocompression bonding tool body, it is possible to prevent a temperature drop at both ends of the thermocompression bonding tool and make the temperature distribution uniform without increasing manufacturing costs.

Furthermore, the temperature at the end of the thermocompression bonding tool can be easily adjusted by adjusting the amount of protrusion of the heater or by providing a simple heat sink.

[Brief explanation of drawings]

Fig. 1 is a front view of a thermocompression bonding tool according to an embodiment of the present invention, Fig. 2 is a side view of the embodiment of Fig. 1, Fig. 3 is a front view of another embodiment, and Fig. 4 is =3. FIG. 5 is a front view of a conventional thermocompression bonding tool, and FIG. 6 is a side view of the conventional thermocompression bonding tool. 1.7: Tool body, 2.8, Cartridge heater, 3.9 = Lead wire, 6.13: @ Electrocouple, 4.5, 10.11 - Protruding part.

Claims (2)

[Claims] (1) A thermocompression bonding tool comprising a tool body and a long rod-shaped heater embedded in the tool body, with both ends of the heater protruding from the tool body. (2) The thermocompression bonding tool according to claim 1, characterized in that a heat radiation means is attached to a protruding portion of the heater.